diff options
Diffstat (limited to 'drivers/usb')
352 files changed, 28942 insertions, 10294 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 92e1dc94ecc8..2642b8a11e05 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -2,59 +2,32 @@ # USB device configuration # -# many non-PCI SOC chips embed OHCI +# These are unused now, remove them once they are no longer selected config USB_ARCH_HAS_OHCI - boolean - # ARM: - default y if SA1111 - default y if ARCH_OMAP - default y if ARCH_S3C24XX - default y if PXA27x - default y if PXA3xx - default y if ARCH_EP93XX - default y if ARCH_AT91 - default y if MFD_TC6393XB - default y if ARCH_W90X900 - default y if ARCH_DAVINCI_DA8XX - default y if ARCH_CNS3XXX - default y if PLAT_SPEAR - default y if ARCH_EXYNOS - # PPC: - default y if STB03xxx - default y if PPC_MPC52xx - # MIPS: - default y if MIPS_ALCHEMY - default y if MACH_JZ4740 - # more: - default PCI - -# some non-PCI hcds implement EHCI + bool + +config USB_OHCI_BIG_ENDIAN_DESC + bool + +config USB_OHCI_BIG_ENDIAN_MMIO + bool + +config USB_OHCI_LITTLE_ENDIAN + bool + default n if STB03xxx || PPC_MPC52xx + default y + config USB_ARCH_HAS_EHCI - boolean - default y if FSL_SOC - default y if PPC_MPC512x - default y if ARCH_IXP4XX - default y if ARCH_W90X900 - default y if ARCH_AT91 - default y if ARCH_MXC - default y if ARCH_MXS - default y if ARCH_OMAP3 - default y if ARCH_CNS3XXX - default y if ARCH_VT8500 - default y if PLAT_SPEAR - default y if PLAT_S5P - default y if ARCH_MSM - default y if MICROBLAZE - default y if SPARC_LEON - default y if ARCH_MMP - default y if MACH_LOONGSON1 - default y if PLAT_ORION - default PCI - -# some non-PCI HCDs implement xHCI + bool + +config USB_EHCI_BIG_ENDIAN_MMIO + bool + +config USB_EHCI_BIG_ENDIAN_DESC + bool + config USB_ARCH_HAS_XHCI - boolean - default PCI + bool menuconfig USB_SUPPORT bool "USB support" @@ -71,19 +44,8 @@ config USB_COMMON default y depends on USB || USB_GADGET -# Host-side USB depends on having a host controller -# NOTE: dummy_hcd is always an option, but it's ignored here ... -# NOTE: SL-811 option should be board-specific ... config USB_ARCH_HAS_HCD - boolean - default y if USB_ARCH_HAS_OHCI - default y if USB_ARCH_HAS_EHCI - default y if USB_ARCH_HAS_XHCI - default y if PCMCIA && !M32R # sl811_cs - default y if ARM # SL-811 - default y if BLACKFIN # SL-811 - default y if SUPERH # r8a66597-hcd - default PCI + def_bool y # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface. config USB diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index c41feba8d5c0..70d7c5b92c3c 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -25,6 +25,8 @@ obj-$(CONFIG_USB_HWA_HCD) += host/ obj-$(CONFIG_USB_ISP1760_HCD) += host/ obj-$(CONFIG_USB_IMX21_HCD) += host/ obj-$(CONFIG_USB_FSL_MPH_DR_OF) += host/ +obj-$(CONFIG_USB_FUSBH200_HCD) += host/ +obj-$(CONFIG_USB_FOTG210_HCD) += host/ obj-$(CONFIG_USB_C67X00_HCD) += c67x00/ @@ -44,7 +46,7 @@ obj-$(CONFIG_USB_MICROTEK) += image/ obj-$(CONFIG_USB_SERIAL) += serial/ obj-$(CONFIG_USB) += misc/ -obj-$(CONFIG_USB_PHY) += phy/ +obj-$(CONFIG_USB_SUPPORT) += phy/ obj-$(CONFIG_EARLY_PRINTK_DBGP) += early/ obj-$(CONFIG_USB_ATM) += atm/ diff --git a/drivers/usb/atm/Makefile b/drivers/usb/atm/Makefile index a5d792ec3ad5..ac278946b06c 100644 --- a/drivers/usb/atm/Makefile +++ b/drivers/usb/atm/Makefile @@ -1,9 +1,6 @@ # # Makefile for USB ATM/xDSL drivers # - -ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG - obj-$(CONFIG_USB_CXACRU) += cxacru.o obj-$(CONFIG_USB_SPEEDTOUCH) += speedtch.o obj-$(CONFIG_USB_UEAGLEATM) += ueagle-atm.o diff --git a/drivers/usb/atm/speedtch.c b/drivers/usb/atm/speedtch.c index 807627b36cc8..69461d653972 100644 --- a/drivers/usb/atm/speedtch.c +++ b/drivers/usb/atm/speedtch.c @@ -888,7 +888,7 @@ static int speedtch_bind(struct usbatm_data *usbatm, usb_fill_int_urb(instance->int_urb, usb_dev, usb_rcvintpipe(usb_dev, ENDPOINT_INT), instance->int_data, sizeof(instance->int_data), - speedtch_handle_int, instance, 50); + speedtch_handle_int, instance, 16); else usb_dbg(usbatm, "%s: no memory for interrupt urb!\n", __func__); diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c index d3527dd8b90c..25a7bfcf666c 100644 --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -311,8 +311,6 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char int vci = ((source[1] & 0x0f) << 12) | (source[2] << 4) | (source[3] >> 4); u8 pti = ((source[3] & 0xe) >> 1); - vdbg(&instance->usb_intf->dev, "%s: vpi %hd, vci %d, pti %d", __func__, vpi, vci, pti); - if ((vci != instance->cached_vci) || (vpi != instance->cached_vpi)) { instance->cached_vpi = vpi; instance->cached_vci = vci; @@ -344,7 +342,6 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char __func__, sarb->len, vcc); /* discard cells already received */ skb_trim(sarb, 0); - UDSL_ASSERT(instance, sarb->tail + ATM_CELL_PAYLOAD <= sarb->end); } memcpy(skb_tail_pointer(sarb), source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD); @@ -437,8 +434,6 @@ static void usbatm_extract_cells(struct usbatm_data *instance, unsigned char *cell_buf = instance->cell_buf; unsigned int space_left = stride - buf_usage; - UDSL_ASSERT(instance, buf_usage <= stride); - if (avail_data >= space_left) { /* add new data and process cell */ memcpy(cell_buf + buf_usage, source, space_left); @@ -479,10 +474,6 @@ static unsigned int usbatm_write_cells(struct usbatm_data *instance, unsigned int bytes_written; unsigned int stride = instance->tx_channel.stride; - vdbg(&instance->usb_intf->dev, "%s: skb->len=%d, avail_space=%u", - __func__, skb->len, avail_space); - UDSL_ASSERT(instance, !(avail_space % stride)); - for (bytes_written = 0; bytes_written < avail_space && ctrl->len; bytes_written += stride, target += stride) { unsigned int data_len = min_t(unsigned int, skb->len, ATM_CELL_PAYLOAD); @@ -553,8 +544,6 @@ static void usbatm_rx_process(unsigned long data) if (!urb->iso_frame_desc[i].status) { unsigned int actual_length = urb->iso_frame_desc[i].actual_length; - UDSL_ASSERT(instance, actual_length <= packet_size); - if (!merge_length) merge_start = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; merge_length += actual_length; @@ -645,7 +634,6 @@ static void usbatm_cancel_send(struct usbatm_data *instance, { struct sk_buff *skb, *n; - atm_dbg(instance, "%s entered\n", __func__); spin_lock_irq(&instance->sndqueue.lock); skb_queue_walk_safe(&instance->sndqueue, skb, n) { if (UDSL_SKB(skb)->atm.vcc == vcc) { @@ -663,7 +651,6 @@ static void usbatm_cancel_send(struct usbatm_data *instance, usbatm_pop(vcc, skb); } tasklet_enable(&instance->tx_channel.tasklet); - atm_dbg(instance, "%s done\n", __func__); } static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) @@ -674,16 +661,13 @@ static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) /* racy disconnection check - fine */ if (!instance || instance->disconnected) { -#ifdef DEBUG +#ifdef VERBOSE_DEBUG printk_ratelimited(KERN_DEBUG "%s: %s!\n", __func__, instance ? "disconnected" : "NULL instance"); #endif err = -ENODEV; goto fail; } - vdbg(&instance->usb_intf->dev, "%s called (skb 0x%p, len %u)", __func__, - skb, skb->len); - if (vcc->qos.aal != ATM_AAL5) { atm_rldbg(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal); err = -EINVAL; @@ -723,8 +707,6 @@ static void usbatm_destroy_instance(struct kref *kref) { struct usbatm_data *instance = container_of(kref, struct usbatm_data, refcount); - usb_dbg(instance, "%s\n", __func__); - tasklet_kill(&instance->rx_channel.tasklet); tasklet_kill(&instance->tx_channel.tasklet); usb_put_dev(instance->usb_dev); @@ -733,15 +715,11 @@ static void usbatm_destroy_instance(struct kref *kref) static void usbatm_get_instance(struct usbatm_data *instance) { - usb_dbg(instance, "%s\n", __func__); - kref_get(&instance->refcount); } static void usbatm_put_instance(struct usbatm_data *instance) { - usb_dbg(instance, "%s\n", __func__); - kref_put(&instance->refcount, usbatm_destroy_instance); } @@ -757,7 +735,6 @@ static void usbatm_atm_dev_close(struct atm_dev *atm_dev) if (!instance) return; - usb_dbg(instance, "%s\n", __func__); atm_dev->dev_data = NULL; /* catch bugs */ usbatm_put_instance(instance); /* taken in usbatm_atm_init */ } @@ -813,8 +790,6 @@ static int usbatm_atm_open(struct atm_vcc *vcc) if (!instance) return -ENODEV; - atm_dbg(instance, "%s: vpi %hd, vci %d\n", __func__, vpi, vci); - /* only support AAL5 */ if ((vcc->qos.aal != ATM_AAL5)) { atm_warn(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal); @@ -891,11 +866,6 @@ static void usbatm_atm_close(struct atm_vcc *vcc) if (!instance || !vcc_data) return; - atm_dbg(instance, "%s entered\n", __func__); - - atm_dbg(instance, "%s: deallocating vcc 0x%p with vpi %d vci %d\n", - __func__, vcc_data, vcc_data->vpi, vcc_data->vci); - usbatm_cancel_send(instance, vcc); mutex_lock(&instance->serialize); /* vs self, usbatm_atm_open, usbatm_usb_disconnect */ @@ -922,8 +892,6 @@ static void usbatm_atm_close(struct atm_vcc *vcc) clear_bit(ATM_VF_ADDR, &vcc->flags); mutex_unlock(&instance->serialize); - - atm_dbg(instance, "%s successful\n", __func__); } static int usbatm_atm_ioctl(struct atm_dev *atm_dev, unsigned int cmd, @@ -1020,7 +988,7 @@ static int usbatm_heavy_init(struct usbatm_data *instance) { struct task_struct *t; - t = kthread_create(usbatm_do_heavy_init, instance, + t = kthread_create(usbatm_do_heavy_init, instance, "%s", instance->driver->driver_name); if (IS_ERR(t)) { usb_err(instance, "%s: failed to create kernel_thread (%ld)!\n", @@ -1060,12 +1028,6 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, int i, length; unsigned int maxpacket, num_packets; - dev_dbg(dev, "%s: trying driver %s with vendor=%04x, product=%04x, ifnum %2d\n", - __func__, driver->driver_name, - le16_to_cpu(usb_dev->descriptor.idVendor), - le16_to_cpu(usb_dev->descriptor.idProduct), - intf->altsetting->desc.bInterfaceNumber); - /* instance init */ instance = kzalloc(sizeof(*instance) + sizeof(struct urb *) * (num_rcv_urbs + num_snd_urbs), GFP_KERNEL); if (!instance) { @@ -1076,7 +1038,8 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, /* public fields */ instance->driver = driver; - snprintf(instance->driver_name, sizeof(instance->driver_name), driver->driver_name); + strlcpy(instance->driver_name, driver->driver_name, + sizeof(instance->driver_name)); instance->usb_dev = usb_dev; instance->usb_intf = intf; @@ -1157,14 +1120,13 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, instance->rx_channel.buf_size = num_packets * maxpacket; instance->rx_channel.packet_size = maxpacket; -#ifdef DEBUG for (i = 0; i < 2; i++) { struct usbatm_channel *channel = i ? &instance->tx_channel : &instance->rx_channel; - dev_dbg(dev, "%s: using %d byte buffer for %s channel 0x%p\n", __func__, channel->buf_size, i ? "tx" : "rx", channel); + dev_dbg(dev, "%s: using %d byte buffer for %s channel 0x%p\n", + __func__, channel->buf_size, i ? "tx" : "rx", channel); } -#endif /* initialize urbs */ @@ -1175,8 +1137,6 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, struct urb *urb; unsigned int iso_packets = usb_pipeisoc(channel->endpoint) ? channel->buf_size / channel->packet_size : 0; - UDSL_ASSERT(instance, !usb_pipeisoc(channel->endpoint) || usb_pipein(channel->endpoint)); - urb = usb_alloc_urb(iso_packets, GFP_KERNEL); if (!urb) { dev_err(dev, "%s: no memory for urb %d!\n", __func__, i); @@ -1265,8 +1225,6 @@ void usbatm_usb_disconnect(struct usb_interface *intf) struct usbatm_vcc_data *vcc_data; int i; - dev_dbg(dev, "%s entered\n", __func__); - if (!instance) { dev_dbg(dev, "%s: NULL instance!\n", __func__); return; diff --git a/drivers/usb/atm/usbatm.h b/drivers/usb/atm/usbatm.h index 5fc489405217..5651231a7437 100644 --- a/drivers/usb/atm/usbatm.h +++ b/drivers/usb/atm/usbatm.h @@ -39,31 +39,14 @@ #define VERBOSE_DEBUG */ -#ifdef DEBUG -#define UDSL_ASSERT(instance, x) BUG_ON(!(x)) -#else -#define UDSL_ASSERT(instance, x) \ - do { \ - if (!(x)) \ - dev_warn(&(instance)->usb_intf->dev, \ - "failed assertion '%s' at line %d", \ - __stringify(x), __LINE__); \ - } while (0) -#endif - #define usb_err(instance, format, arg...) \ dev_err(&(instance)->usb_intf->dev , format , ## arg) #define usb_info(instance, format, arg...) \ dev_info(&(instance)->usb_intf->dev , format , ## arg) #define usb_warn(instance, format, arg...) \ dev_warn(&(instance)->usb_intf->dev , format , ## arg) -#ifdef DEBUG -#define usb_dbg(instance, format, arg...) \ - dev_printk(KERN_DEBUG , &(instance)->usb_intf->dev , format , ## arg) -#else #define usb_dbg(instance, format, arg...) \ - do {} while (0) -#endif + dev_dbg(&(instance)->usb_intf->dev , format , ## arg) /* FIXME: move to dev_* once ATM is driver model aware */ #define atm_printk(level, instance, format, arg...) \ @@ -76,18 +59,12 @@ atm_printk(KERN_INFO, instance , format , ## arg) #define atm_warn(instance, format, arg...) \ atm_printk(KERN_WARNING, instance , format , ## arg) -#ifdef DEBUG -#define atm_dbg(instance, format, arg...) \ - atm_printk(KERN_DEBUG, instance , format , ## arg) -#define atm_rldbg(instance, format, arg...) \ +#define atm_dbg(instance, format, arg...) \ + dynamic_pr_debug("ATM dev %d: " format , \ + (instance)->atm_dev->number , ## arg) +#define atm_rldbg(instance, format, arg...) \ if (printk_ratelimit()) \ - atm_printk(KERN_DEBUG, instance , format , ## arg) -#else -#define atm_dbg(instance, format, arg...) \ - do {} while (0) -#define atm_rldbg(instance, format, arg...) \ - do {} while (0) -#endif + atm_dbg(instance , format , ## arg) /* flags, set by mini-driver in bind() */ diff --git a/drivers/usb/c67x00/c67x00-drv.c b/drivers/usb/c67x00/c67x00-drv.c index fe815ecd557e..8db3380c3329 100644 --- a/drivers/usb/c67x00/c67x00-drv.c +++ b/drivers/usb/c67x00/c67x00-drv.c @@ -131,7 +131,7 @@ static int c67x00_drv_probe(struct platform_device *pdev) if (!res2) return -ENODEV; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); if (!pdata) return -ENODEV; @@ -154,7 +154,7 @@ static int c67x00_drv_probe(struct platform_device *pdev) spin_lock_init(&c67x00->hpi.lock); c67x00->hpi.regstep = pdata->hpi_regstep; - c67x00->pdata = pdev->dev.platform_data; + c67x00->pdata = dev_get_platdata(&pdev->dev); c67x00->pdev = pdev; c67x00_ll_init(c67x00); diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig index b2df442eb3e5..4a851e15e58c 100644 --- a/drivers/usb/chipidea/Kconfig +++ b/drivers/usb/chipidea/Kconfig @@ -1,6 +1,6 @@ config USB_CHIPIDEA tristate "ChipIdea Highspeed Dual Role Controller" - depends on USB || USB_GADGET + depends on (USB_EHCI_HCD && USB_GADGET) || (USB_EHCI_HCD && !USB_GADGET) || (!USB_EHCI_HCD && USB_GADGET) help Say Y here if your system has a dual role high speed USB controller based on ChipIdea silicon IP. Currently, only the @@ -12,15 +12,14 @@ if USB_CHIPIDEA config USB_CHIPIDEA_UDC bool "ChipIdea device controller" - depends on USB_GADGET=y || USB_GADGET=USB_CHIPIDEA + depends on USB_GADGET help Say Y here to enable device controller functionality of the ChipIdea driver. config USB_CHIPIDEA_HOST bool "ChipIdea host controller" - depends on USB=y || USB=USB_CHIPIDEA - depends on USB_EHCI_HCD=y + depends on USB_EHCI_HCD select USB_EHCI_ROOT_HUB_TT help Say Y here to enable host controller functionality of the diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile index 4ab83e98219b..a99d980454a6 100644 --- a/drivers/usb/chipidea/Makefile +++ b/drivers/usb/chipidea/Makefile @@ -2,20 +2,20 @@ ccflags-$(CONFIG_USB_CHIPIDEA_DEBUG) := -DDEBUG obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc.o -ci_hdrc-y := core.o +ci_hdrc-y := core.o otg.o ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC) += udc.o ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST) += host.o ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG) += debug.o # Glue/Bridge layers go here -obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_msm.o +obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_msm.o # PCI doesn't provide stubs, need to check ifneq ($(CONFIG_PCI),) - obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_pci.o + obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_pci.o endif -ifneq ($(CONFIG_OF_DEVICE),) - obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_imx.o usbmisc_imx.o +ifneq ($(CONFIG_OF),) + obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_imx.o usbmisc_imx.o endif diff --git a/drivers/usb/chipidea/bits.h b/drivers/usb/chipidea/bits.h index 050de8562a04..464584c6ccae 100644 --- a/drivers/usb/chipidea/bits.h +++ b/drivers/usb/chipidea/bits.h @@ -48,10 +48,24 @@ #define PORTSC_SUSP BIT(7) #define PORTSC_HSP BIT(9) #define PORTSC_PTC (0x0FUL << 16) +/* PTS and PTW for non lpm version only */ +#define PORTSC_PTS(d) \ + (u32)((((d) & 0x3) << 30) | (((d) & 0x4) ? BIT(25) : 0)) +#define PORTSC_PTW BIT(28) +#define PORTSC_STS BIT(29) /* DEVLC */ #define DEVLC_PSPD (0x03UL << 25) -#define DEVLC_PSPD_HS (0x02UL << 25) +#define DEVLC_PSPD_HS (0x02UL << 25) +#define DEVLC_PTW BIT(27) +#define DEVLC_STS BIT(28) +#define DEVLC_PTS(d) (u32)(((d) & 0x7) << 29) + +/* Encoding for DEVLC_PTS and PORTSC_PTS */ +#define PTS_UTMI 0 +#define PTS_ULPI 2 +#define PTS_SERIAL 3 +#define PTS_HSIC 4 /* OTGSC */ #define OTGSC_IDPU BIT(5) @@ -65,11 +79,21 @@ #define OTGSC_ASVIS BIT(18) #define OTGSC_BSVIS BIT(19) #define OTGSC_BSEIS BIT(20) +#define OTGSC_1MSIS BIT(21) +#define OTGSC_DPIS BIT(22) #define OTGSC_IDIE BIT(24) #define OTGSC_AVVIE BIT(25) #define OTGSC_ASVIE BIT(26) #define OTGSC_BSVIE BIT(27) #define OTGSC_BSEIE BIT(28) +#define OTGSC_1MSIE BIT(29) +#define OTGSC_DPIE BIT(30) +#define OTGSC_INT_EN_BITS (OTGSC_IDIE | OTGSC_AVVIE | OTGSC_ASVIE \ + | OTGSC_BSVIE | OTGSC_BSEIE | OTGSC_1MSIE \ + | OTGSC_DPIE) +#define OTGSC_INT_STATUS_BITS (OTGSC_IDIS | OTGSC_AVVIS | OTGSC_ASVIS \ + | OTGSC_BSVIS | OTGSC_BSEIS | OTGSC_1MSIS \ + | OTGSC_DPIS) /* USBMODE */ #define USBMODE_CM (0x03UL << 0) diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h index b0a6bce064ca..1c94fc5257f4 100644 --- a/drivers/usb/chipidea/ci.h +++ b/drivers/usb/chipidea/ci.h @@ -22,14 +22,14 @@ * DEFINE *****************************************************************************/ #define TD_PAGE_COUNT 5 -#define CI13XXX_PAGE_SIZE 4096ul /* page size for TD's */ +#define CI_HDRC_PAGE_SIZE 4096ul /* page size for TD's */ #define ENDPT_MAX 32 /****************************************************************************** * STRUCTURES *****************************************************************************/ /** - * struct ci13xxx_ep - endpoint representation + * struct ci_hw_ep - endpoint representation * @ep: endpoint structure for gadget drivers * @dir: endpoint direction (TX/RX) * @num: endpoint number @@ -41,7 +41,7 @@ * @lock: pointer to controller's spinlock * @td_pool: pointer to controller's TD pool */ -struct ci13xxx_ep { +struct ci_hw_ep { struct usb_ep ep; u8 dir; u8 num; @@ -49,15 +49,16 @@ struct ci13xxx_ep { char name[16]; struct { struct list_head queue; - struct ci13xxx_qh *ptr; + struct ci_hw_qh *ptr; dma_addr_t dma; } qh; int wedge; /* global resources */ - struct ci13xxx *ci; + struct ci_hdrc *ci; spinlock_t *lock; struct dma_pool *td_pool; + struct td_node *pending_td; }; enum ci_role { @@ -74,9 +75,9 @@ enum ci_role { * name: role name string (host/gadget) */ struct ci_role_driver { - int (*start)(struct ci13xxx *); - void (*stop)(struct ci13xxx *); - irqreturn_t (*irq)(struct ci13xxx *); + int (*start)(struct ci_hdrc *); + void (*stop)(struct ci_hdrc *); + irqreturn_t (*irq)(struct ci_hdrc *); const char *name; }; @@ -101,7 +102,7 @@ struct hw_bank { }; /** - * struct ci13xxx - chipidea device representation + * struct ci_hdrc - chipidea device representation * @dev: pointer to parent device * @lock: access synchronization * @hw_bank: hardware register mapping @@ -116,7 +117,7 @@ struct hw_bank { * @gadget: device side representation for peripheral controller * @driver: gadget driver * @hw_ep_max: total number of endpoints supported by hardware - * @ci13xxx_ep: array of endpoints + * @ci_hw_ep: array of endpoints * @ep0_dir: ep0 direction * @ep0out: pointer to ep0 OUT endpoint * @ep0in: pointer to ep0 IN endpoint @@ -131,8 +132,11 @@ struct hw_bank { * @transceiver: pointer to USB PHY, if any * @hcd: pointer to usb_hcd for ehci host driver * @debugfs: root dentry for this controller in debugfs + * @id_event: indicates there is an id event, and handled at ci_otg_work + * @b_sess_valid_event: indicates there is a vbus event, and handled + * at ci_otg_work */ -struct ci13xxx { +struct ci_hdrc { struct device *dev; spinlock_t lock; struct hw_bank hw_bank; @@ -149,9 +153,9 @@ struct ci13xxx { struct usb_gadget gadget; struct usb_gadget_driver *driver; unsigned hw_ep_max; - struct ci13xxx_ep ci13xxx_ep[ENDPT_MAX]; + struct ci_hw_ep ci_hw_ep[ENDPT_MAX]; u32 ep0_dir; - struct ci13xxx_ep *ep0out, *ep0in; + struct ci_hw_ep *ep0out, *ep0in; struct usb_request *status; bool setaddr; @@ -160,22 +164,24 @@ struct ci13xxx { u8 suspended; u8 test_mode; - struct ci13xxx_platform_data *platdata; + struct ci_hdrc_platform_data *platdata; int vbus_active; /* FIXME: some day, we'll not use global phy */ bool global_phy; struct usb_phy *transceiver; struct usb_hcd *hcd; struct dentry *debugfs; + bool id_event; + bool b_sess_valid_event; }; -static inline struct ci_role_driver *ci_role(struct ci13xxx *ci) +static inline struct ci_role_driver *ci_role(struct ci_hdrc *ci) { BUG_ON(ci->role >= CI_ROLE_END || !ci->roles[ci->role]); return ci->roles[ci->role]; } -static inline int ci_role_start(struct ci13xxx *ci, enum ci_role role) +static inline int ci_role_start(struct ci_hdrc *ci, enum ci_role role) { int ret; @@ -191,7 +197,7 @@ static inline int ci_role_start(struct ci13xxx *ci, enum ci_role role) return ret; } -static inline void ci_role_stop(struct ci13xxx *ci) +static inline void ci_role_stop(struct ci_hdrc *ci) { enum ci_role role = ci->role; @@ -210,7 +216,7 @@ static inline void ci_role_stop(struct ci13xxx *ci) #define REG_BITS (32) /* register indices */ -enum ci13xxx_regs { +enum ci_hw_regs { CAP_CAPLENGTH, CAP_HCCPARAMS, CAP_DCCPARAMS, @@ -242,7 +248,7 @@ enum ci13xxx_regs { * * This function returns register contents */ -static inline u32 hw_read(struct ci13xxx *ci, enum ci13xxx_regs reg, u32 mask) +static inline u32 hw_read(struct ci_hdrc *ci, enum ci_hw_regs reg, u32 mask) { return ioread32(ci->hw_bank.regmap[reg]) & mask; } @@ -253,7 +259,7 @@ static inline u32 hw_read(struct ci13xxx *ci, enum ci13xxx_regs reg, u32 mask) * @mask: bitfield mask * @data: new value */ -static inline void hw_write(struct ci13xxx *ci, enum ci13xxx_regs reg, +static inline void hw_write(struct ci_hdrc *ci, enum ci_hw_regs reg, u32 mask, u32 data) { if (~mask) @@ -270,7 +276,7 @@ static inline void hw_write(struct ci13xxx *ci, enum ci13xxx_regs reg, * * This function returns register contents */ -static inline u32 hw_test_and_clear(struct ci13xxx *ci, enum ci13xxx_regs reg, +static inline u32 hw_test_and_clear(struct ci_hdrc *ci, enum ci_hw_regs reg, u32 mask) { u32 val = ioread32(ci->hw_bank.regmap[reg]) & mask; @@ -287,7 +293,7 @@ static inline u32 hw_test_and_clear(struct ci13xxx *ci, enum ci13xxx_regs reg, * * This function returns register contents */ -static inline u32 hw_test_and_write(struct ci13xxx *ci, enum ci13xxx_regs reg, +static inline u32 hw_test_and_write(struct ci_hdrc *ci, enum ci_hw_regs reg, u32 mask, u32 data) { u32 val = hw_read(ci, reg, ~0); @@ -296,10 +302,13 @@ static inline u32 hw_test_and_write(struct ci13xxx *ci, enum ci13xxx_regs reg, return (val & mask) >> __ffs(mask); } -int hw_device_reset(struct ci13xxx *ci, u32 mode); +int hw_device_reset(struct ci_hdrc *ci, u32 mode); -int hw_port_test_set(struct ci13xxx *ci, u8 mode); +int hw_port_test_set(struct ci_hdrc *ci, u8 mode); -u8 hw_port_test_get(struct ci13xxx *ci); +u8 hw_port_test_get(struct ci_hdrc *ci); + +int hw_wait_reg(struct ci_hdrc *ci, enum ci_hw_regs reg, u32 mask, + u32 value, unsigned int timeout_ms); #endif /* __DRIVERS_USB_CHIPIDEA_CI_H */ diff --git a/drivers/usb/chipidea/ci13xxx_imx.c b/drivers/usb/chipidea/ci13xxx_imx.c deleted file mode 100644 index 73f9d5f15adb..000000000000 --- a/drivers/usb/chipidea/ci13xxx_imx.c +++ /dev/null @@ -1,274 +0,0 @@ -/* - * Copyright 2012 Freescale Semiconductor, Inc. - * Copyright (C) 2012 Marek Vasut <marex@denx.de> - * on behalf of DENX Software Engineering GmbH - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html - */ - -#include <linux/module.h> -#include <linux/of_platform.h> -#include <linux/of_gpio.h> -#include <linux/platform_device.h> -#include <linux/pm_runtime.h> -#include <linux/dma-mapping.h> -#include <linux/usb/chipidea.h> -#include <linux/clk.h> -#include <linux/regulator/consumer.h> -#include <linux/pinctrl/consumer.h> - -#include "ci.h" -#include "ci13xxx_imx.h" - -#define pdev_to_phy(pdev) \ - ((struct usb_phy *)platform_get_drvdata(pdev)) - -struct ci13xxx_imx_data { - struct device_node *phy_np; - struct usb_phy *phy; - struct platform_device *ci_pdev; - struct clk *clk; - struct regulator *reg_vbus; -}; - -static const struct usbmisc_ops *usbmisc_ops; - -/* Common functions shared by usbmisc drivers */ - -int usbmisc_set_ops(const struct usbmisc_ops *ops) -{ - if (usbmisc_ops) - return -EBUSY; - - usbmisc_ops = ops; - - return 0; -} -EXPORT_SYMBOL_GPL(usbmisc_set_ops); - -void usbmisc_unset_ops(const struct usbmisc_ops *ops) -{ - usbmisc_ops = NULL; -} -EXPORT_SYMBOL_GPL(usbmisc_unset_ops); - -int usbmisc_get_init_data(struct device *dev, struct usbmisc_usb_device *usbdev) -{ - struct device_node *np = dev->of_node; - struct of_phandle_args args; - int ret; - - usbdev->dev = dev; - - ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", - 0, &args); - if (ret) { - dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", - ret); - memset(usbdev, 0, sizeof(*usbdev)); - return ret; - } - usbdev->index = args.args[0]; - of_node_put(args.np); - - if (of_find_property(np, "disable-over-current", NULL)) - usbdev->disable_oc = 1; - - if (of_find_property(np, "external-vbus-divider", NULL)) - usbdev->evdo = 1; - - return 0; -} -EXPORT_SYMBOL_GPL(usbmisc_get_init_data); - -/* End of common functions shared by usbmisc drivers*/ - -static struct ci13xxx_platform_data ci13xxx_imx_platdata = { - .name = "ci13xxx_imx", - .flags = CI13XXX_REQUIRE_TRANSCEIVER | - CI13XXX_PULLUP_ON_VBUS | - CI13XXX_DISABLE_STREAMING, - .capoffset = DEF_CAPOFFSET, -}; - -static int ci13xxx_imx_probe(struct platform_device *pdev) -{ - struct ci13xxx_imx_data *data; - struct platform_device *plat_ci, *phy_pdev; - struct device_node *phy_np; - struct resource *res; - struct regulator *reg_vbus; - struct pinctrl *pinctrl; - int ret; - - if (of_find_property(pdev->dev.of_node, "fsl,usbmisc", NULL) - && !usbmisc_ops) - return -EPROBE_DEFER; - - data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); - if (!data) { - dev_err(&pdev->dev, "Failed to allocate CI13xxx-IMX data!\n"); - return -ENOMEM; - } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "Can't get device resources!\n"); - return -ENOENT; - } - - pinctrl = devm_pinctrl_get_select_default(&pdev->dev); - if (IS_ERR(pinctrl)) - dev_warn(&pdev->dev, "pinctrl get/select failed, err=%ld\n", - PTR_ERR(pinctrl)); - - data->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(data->clk)) { - dev_err(&pdev->dev, - "Failed to get clock, err=%ld\n", PTR_ERR(data->clk)); - return PTR_ERR(data->clk); - } - - ret = clk_prepare_enable(data->clk); - if (ret) { - dev_err(&pdev->dev, - "Failed to prepare or enable clock, err=%d\n", ret); - return ret; - } - - phy_np = of_parse_phandle(pdev->dev.of_node, "fsl,usbphy", 0); - if (phy_np) { - data->phy_np = phy_np; - phy_pdev = of_find_device_by_node(phy_np); - if (phy_pdev) { - struct usb_phy *phy; - phy = pdev_to_phy(phy_pdev); - if (phy && - try_module_get(phy_pdev->dev.driver->owner)) { - usb_phy_init(phy); - data->phy = phy; - } - } - } - - /* we only support host now, so enable vbus here */ - reg_vbus = devm_regulator_get(&pdev->dev, "vbus"); - if (!IS_ERR(reg_vbus)) { - ret = regulator_enable(reg_vbus); - if (ret) { - dev_err(&pdev->dev, - "Failed to enable vbus regulator, err=%d\n", - ret); - goto put_np; - } - data->reg_vbus = reg_vbus; - } else { - reg_vbus = NULL; - } - - ci13xxx_imx_platdata.phy = data->phy; - - if (!pdev->dev.dma_mask) - pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; - if (!pdev->dev.coherent_dma_mask) - pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); - - if (usbmisc_ops && usbmisc_ops->init) { - ret = usbmisc_ops->init(&pdev->dev); - if (ret) { - dev_err(&pdev->dev, - "usbmisc init failed, ret=%d\n", ret); - goto err; - } - } - - plat_ci = ci13xxx_add_device(&pdev->dev, - pdev->resource, pdev->num_resources, - &ci13xxx_imx_platdata); - if (IS_ERR(plat_ci)) { - ret = PTR_ERR(plat_ci); - dev_err(&pdev->dev, - "Can't register ci_hdrc platform device, err=%d\n", - ret); - goto err; - } - - if (usbmisc_ops && usbmisc_ops->post) { - ret = usbmisc_ops->post(&pdev->dev); - if (ret) { - dev_err(&pdev->dev, - "usbmisc post failed, ret=%d\n", ret); - goto put_np; - } - } - - data->ci_pdev = plat_ci; - platform_set_drvdata(pdev, data); - - pm_runtime_no_callbacks(&pdev->dev); - pm_runtime_enable(&pdev->dev); - - return 0; - -err: - if (reg_vbus) - regulator_disable(reg_vbus); -put_np: - if (phy_np) - of_node_put(phy_np); - clk_disable_unprepare(data->clk); - return ret; -} - -static int ci13xxx_imx_remove(struct platform_device *pdev) -{ - struct ci13xxx_imx_data *data = platform_get_drvdata(pdev); - - pm_runtime_disable(&pdev->dev); - ci13xxx_remove_device(data->ci_pdev); - - if (data->reg_vbus) - regulator_disable(data->reg_vbus); - - if (data->phy) { - usb_phy_shutdown(data->phy); - module_put(data->phy->dev->driver->owner); - } - - of_node_put(data->phy_np); - - clk_disable_unprepare(data->clk); - - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static const struct of_device_id ci13xxx_imx_dt_ids[] = { - { .compatible = "fsl,imx27-usb", }, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, ci13xxx_imx_dt_ids); - -static struct platform_driver ci13xxx_imx_driver = { - .probe = ci13xxx_imx_probe, - .remove = ci13xxx_imx_remove, - .driver = { - .name = "imx_usb", - .owner = THIS_MODULE, - .of_match_table = ci13xxx_imx_dt_ids, - }, -}; - -module_platform_driver(ci13xxx_imx_driver); - -MODULE_ALIAS("platform:imx-usb"); -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("CI13xxx i.MX USB binding"); -MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); -MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); diff --git a/drivers/usb/chipidea/ci13xxx_imx.h b/drivers/usb/chipidea/ci13xxx_imx.h deleted file mode 100644 index 550bfa457620..000000000000 --- a/drivers/usb/chipidea/ci13xxx_imx.h +++ /dev/null @@ -1,31 +0,0 @@ -/* - * Copyright 2012 Freescale Semiconductor, Inc. - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html - */ - -/* Used to set SoC specific callbacks */ -struct usbmisc_ops { - /* It's called once when probe a usb device */ - int (*init)(struct device *dev); - /* It's called once after adding a usb device */ - int (*post)(struct device *dev); -}; - -struct usbmisc_usb_device { - struct device *dev; /* usb controller device */ - int index; - - unsigned int disable_oc:1; /* over current detect disabled */ - unsigned int evdo:1; /* set external vbus divider option */ -}; - -int usbmisc_set_ops(const struct usbmisc_ops *ops); -void usbmisc_unset_ops(const struct usbmisc_ops *ops); -int -usbmisc_get_init_data(struct device *dev, struct usbmisc_usb_device *usbdev); diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c new file mode 100644 index 000000000000..74d998d9b45b --- /dev/null +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -0,0 +1,209 @@ +/* + * Copyright 2012 Freescale Semiconductor, Inc. + * Copyright (C) 2012 Marek Vasut <marex@denx.de> + * on behalf of DENX Software Engineering GmbH + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/of_gpio.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/dma-mapping.h> +#include <linux/usb/chipidea.h> +#include <linux/clk.h> + +#include "ci.h" +#include "ci_hdrc_imx.h" + +struct ci_hdrc_imx_data { + struct usb_phy *phy; + struct platform_device *ci_pdev; + struct clk *clk; + struct imx_usbmisc_data *usbmisc_data; +}; + +/* Common functions shared by usbmisc drivers */ + +static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) +{ + struct device_node *np = dev->of_node; + struct of_phandle_args args; + struct imx_usbmisc_data *data; + int ret; + + /* + * In case the fsl,usbmisc property is not present this device doesn't + * need usbmisc. Return NULL (which is no error here) + */ + if (!of_get_property(np, "fsl,usbmisc", NULL)) + return NULL; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return ERR_PTR(-ENOMEM); + + ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", + 0, &args); + if (ret) { + dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", + ret); + return ERR_PTR(ret); + } + + data->index = args.args[0]; + of_node_put(args.np); + + if (of_find_property(np, "disable-over-current", NULL)) + data->disable_oc = 1; + + if (of_find_property(np, "external-vbus-divider", NULL)) + data->evdo = 1; + + return data; +} + +/* End of common functions shared by usbmisc drivers*/ + +static int ci_hdrc_imx_probe(struct platform_device *pdev) +{ + struct ci_hdrc_imx_data *data; + struct ci_hdrc_platform_data pdata = { + .name = "ci_hdrc_imx", + .capoffset = DEF_CAPOFFSET, + .flags = CI_HDRC_REQUIRE_TRANSCEIVER | + CI_HDRC_DISABLE_STREAMING, + }; + int ret; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) { + dev_err(&pdev->dev, "Failed to allocate ci_hdrc-imx data!\n"); + return -ENOMEM; + } + + data->usbmisc_data = usbmisc_get_init_data(&pdev->dev); + if (IS_ERR(data->usbmisc_data)) + return PTR_ERR(data->usbmisc_data); + + data->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(data->clk)) { + dev_err(&pdev->dev, + "Failed to get clock, err=%ld\n", PTR_ERR(data->clk)); + return PTR_ERR(data->clk); + } + + ret = clk_prepare_enable(data->clk); + if (ret) { + dev_err(&pdev->dev, + "Failed to prepare or enable clock, err=%d\n", ret); + return ret; + } + + data->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "fsl,usbphy", 0); + if (!IS_ERR(data->phy)) { + ret = usb_phy_init(data->phy); + if (ret) { + dev_err(&pdev->dev, "unable to init phy: %d\n", ret); + goto err_clk; + } + } else if (PTR_ERR(data->phy) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto err_clk; + } + + pdata.phy = data->phy; + + if (!pdev->dev.dma_mask) + pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; + if (!pdev->dev.coherent_dma_mask) + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + + if (data->usbmisc_data) { + ret = imx_usbmisc_init(data->usbmisc_data); + if (ret) { + dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n", + ret); + goto err_clk; + } + } + + data->ci_pdev = ci_hdrc_add_device(&pdev->dev, + pdev->resource, pdev->num_resources, + &pdata); + if (IS_ERR(data->ci_pdev)) { + ret = PTR_ERR(data->ci_pdev); + dev_err(&pdev->dev, + "Can't register ci_hdrc platform device, err=%d\n", + ret); + goto err_clk; + } + + if (data->usbmisc_data) { + ret = imx_usbmisc_init_post(data->usbmisc_data); + if (ret) { + dev_err(&pdev->dev, "usbmisc post failed, ret=%d\n", + ret); + goto disable_device; + } + } + + platform_set_drvdata(pdev, data); + + pm_runtime_no_callbacks(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + return 0; + +disable_device: + ci_hdrc_remove_device(data->ci_pdev); +err_clk: + clk_disable_unprepare(data->clk); + return ret; +} + +static int ci_hdrc_imx_remove(struct platform_device *pdev) +{ + struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); + + pm_runtime_disable(&pdev->dev); + ci_hdrc_remove_device(data->ci_pdev); + + if (data->phy) + usb_phy_shutdown(data->phy); + + clk_disable_unprepare(data->clk); + + return 0; +} + +static const struct of_device_id ci_hdrc_imx_dt_ids[] = { + { .compatible = "fsl,imx27-usb", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids); + +static struct platform_driver ci_hdrc_imx_driver = { + .probe = ci_hdrc_imx_probe, + .remove = ci_hdrc_imx_remove, + .driver = { + .name = "imx_usb", + .owner = THIS_MODULE, + .of_match_table = ci_hdrc_imx_dt_ids, + }, +}; + +module_platform_driver(ci_hdrc_imx_driver); + +MODULE_ALIAS("platform:imx-usb"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); +MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); +MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h new file mode 100644 index 000000000000..c7271590dd0a --- /dev/null +++ b/drivers/usb/chipidea/ci_hdrc_imx.h @@ -0,0 +1,20 @@ +/* + * Copyright 2012 Freescale Semiconductor, Inc. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +struct imx_usbmisc_data { + int index; + + unsigned int disable_oc:1; /* over current detect disabled */ + unsigned int evdo:1; /* set external vbus divider option */ +}; + +int imx_usbmisc_init(struct imx_usbmisc_data *); +int imx_usbmisc_init_post(struct imx_usbmisc_data *); diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c index 7d16681fd3d2..2d51d852b474 100644 --- a/drivers/usb/chipidea/ci13xxx_msm.c +++ b/drivers/usb/chipidea/ci_hdrc_msm.c @@ -17,19 +17,19 @@ #define MSM_USB_BASE (ci->hw_bank.abs) -static void ci13xxx_msm_notify_event(struct ci13xxx *ci, unsigned event) +static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event) { struct device *dev = ci->gadget.dev.parent; int val; switch (event) { - case CI13XXX_CONTROLLER_RESET_EVENT: - dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n"); + case CI_HDRC_CONTROLLER_RESET_EVENT: + dev_dbg(dev, "CI_HDRC_CONTROLLER_RESET_EVENT received\n"); writel(0, USB_AHBBURST); writel(0, USB_AHBMODE); break; - case CI13XXX_CONTROLLER_STOPPED_EVENT: - dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n"); + case CI_HDRC_CONTROLLER_STOPPED_EVENT: + dev_dbg(dev, "CI_HDRC_CONTROLLER_STOPPED_EVENT received\n"); /* * Put the transceiver in non-driving mode. Otherwise host * may not detect soft-disconnection. @@ -40,32 +40,31 @@ static void ci13xxx_msm_notify_event(struct ci13xxx *ci, unsigned event) usb_phy_io_write(ci->transceiver, val, ULPI_FUNC_CTRL); break; default: - dev_dbg(dev, "unknown ci13xxx event\n"); + dev_dbg(dev, "unknown ci_hdrc event\n"); break; } } -static struct ci13xxx_platform_data ci13xxx_msm_platdata = { - .name = "ci13xxx_msm", - .flags = CI13XXX_REGS_SHARED | - CI13XXX_REQUIRE_TRANSCEIVER | - CI13XXX_PULLUP_ON_VBUS | - CI13XXX_DISABLE_STREAMING, +static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = { + .name = "ci_hdrc_msm", + .flags = CI_HDRC_REGS_SHARED | + CI_HDRC_REQUIRE_TRANSCEIVER | + CI_HDRC_DISABLE_STREAMING, - .notify_event = ci13xxx_msm_notify_event, + .notify_event = ci_hdrc_msm_notify_event, }; -static int ci13xxx_msm_probe(struct platform_device *pdev) +static int ci_hdrc_msm_probe(struct platform_device *pdev) { struct platform_device *plat_ci; - dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n"); + dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n"); - plat_ci = ci13xxx_add_device(&pdev->dev, + plat_ci = ci_hdrc_add_device(&pdev->dev, pdev->resource, pdev->num_resources, - &ci13xxx_msm_platdata); + &ci_hdrc_msm_platdata); if (IS_ERR(plat_ci)) { - dev_err(&pdev->dev, "ci13xxx_add_device failed!\n"); + dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n"); return PTR_ERR(plat_ci); } @@ -77,23 +76,24 @@ static int ci13xxx_msm_probe(struct platform_device *pdev) return 0; } -static int ci13xxx_msm_remove(struct platform_device *pdev) +static int ci_hdrc_msm_remove(struct platform_device *pdev) { struct platform_device *plat_ci = platform_get_drvdata(pdev); pm_runtime_disable(&pdev->dev); - ci13xxx_remove_device(plat_ci); + ci_hdrc_remove_device(plat_ci); return 0; } -static struct platform_driver ci13xxx_msm_driver = { - .probe = ci13xxx_msm_probe, - .remove = ci13xxx_msm_remove, +static struct platform_driver ci_hdrc_msm_driver = { + .probe = ci_hdrc_msm_probe, + .remove = ci_hdrc_msm_remove, .driver = { .name = "msm_hsusb", }, }; -module_platform_driver(ci13xxx_msm_driver); +module_platform_driver(ci_hdrc_msm_driver); MODULE_ALIAS("platform:msm_hsusb"); +MODULE_ALIAS("platform:ci13xxx_msm"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/chipidea/ci13xxx_pci.c b/drivers/usb/chipidea/ci_hdrc_pci.c index 4e1fc61b9d95..042320a6c6c7 100644 --- a/drivers/usb/chipidea/ci13xxx_pci.c +++ b/drivers/usb/chipidea/ci_hdrc_pci.c @@ -1,5 +1,5 @@ /* - * ci13xxx_pci.c - MIPS USB IP core family device controller + * ci_hdrc_pci.c - MIPS USB IP core family device controller * * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. * @@ -18,29 +18,29 @@ #include <linux/usb/chipidea.h> /* driver name */ -#define UDC_DRIVER_NAME "ci13xxx_pci" +#define UDC_DRIVER_NAME "ci_hdrc_pci" /****************************************************************************** * PCI block *****************************************************************************/ -static struct ci13xxx_platform_data pci_platdata = { +static struct ci_hdrc_platform_data pci_platdata = { .name = UDC_DRIVER_NAME, .capoffset = DEF_CAPOFFSET, }; -static struct ci13xxx_platform_data langwell_pci_platdata = { +static struct ci_hdrc_platform_data langwell_pci_platdata = { .name = UDC_DRIVER_NAME, .capoffset = 0, }; -static struct ci13xxx_platform_data penwell_pci_platdata = { +static struct ci_hdrc_platform_data penwell_pci_platdata = { .name = UDC_DRIVER_NAME, .capoffset = 0, .power_budget = 200, }; /** - * ci13xxx_pci_probe: PCI probe + * ci_hdrc_pci_probe: PCI probe * @pdev: USB device controller being probed * @id: PCI hotplug ID connecting controller to UDC framework * @@ -48,10 +48,10 @@ static struct ci13xxx_platform_data penwell_pci_platdata = { * Allocates basic PCI resources for this USB device controller, and then * invokes the udc_probe() method to start the UDC associated with it */ -static int ci13xxx_pci_probe(struct pci_dev *pdev, +static int ci_hdrc_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { - struct ci13xxx_platform_data *platdata = (void *)id->driver_data; + struct ci_hdrc_platform_data *platdata = (void *)id->driver_data; struct platform_device *plat_ci; struct resource res[3]; int retval = 0, nres = 2; @@ -61,17 +61,15 @@ static int ci13xxx_pci_probe(struct pci_dev *pdev, return -ENODEV; } - retval = pci_enable_device(pdev); + retval = pcim_enable_device(pdev); if (retval) - goto done; + return retval; if (!pdev->irq) { dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!"); - retval = -ENODEV; - goto disable_device; + return -ENODEV; } - pci_set_power_state(pdev, PCI_D0); pci_set_master(pdev); pci_try_set_mwi(pdev); @@ -82,38 +80,30 @@ static int ci13xxx_pci_probe(struct pci_dev *pdev, res[1].start = pdev->irq; res[1].flags = IORESOURCE_IRQ; - plat_ci = ci13xxx_add_device(&pdev->dev, res, nres, platdata); + plat_ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata); if (IS_ERR(plat_ci)) { - dev_err(&pdev->dev, "ci13xxx_add_device failed!\n"); - retval = PTR_ERR(plat_ci); - goto disable_device; + dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n"); + return PTR_ERR(plat_ci); } pci_set_drvdata(pdev, plat_ci); return 0; - - disable_device: - pci_disable_device(pdev); - done: - return retval; } /** - * ci13xxx_pci_remove: PCI remove + * ci_hdrc_pci_remove: PCI remove * @pdev: USB Device Controller being removed * - * Reverses the effect of ci13xxx_pci_probe(), + * Reverses the effect of ci_hdrc_pci_probe(), * first invoking the udc_remove() and then releases * all PCI resources allocated for this USB device controller */ -static void ci13xxx_pci_remove(struct pci_dev *pdev) +static void ci_hdrc_pci_remove(struct pci_dev *pdev) { struct platform_device *plat_ci = pci_get_drvdata(pdev); - ci13xxx_remove_device(plat_ci); - pci_set_drvdata(pdev, NULL); - pci_disable_device(pdev); + ci_hdrc_remove_device(plat_ci); } /** @@ -122,7 +112,7 @@ static void ci13xxx_pci_remove(struct pci_dev *pdev) * * Check "pci.h" for details */ -static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = { +static DEFINE_PCI_DEVICE_TABLE(ci_hdrc_pci_id_table) = { { PCI_DEVICE(0x153F, 0x1004), .driver_data = (kernel_ulong_t)&pci_platdata, @@ -141,18 +131,19 @@ static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = { }, { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ } }; -MODULE_DEVICE_TABLE(pci, ci13xxx_pci_id_table); +MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table); -static struct pci_driver ci13xxx_pci_driver = { +static struct pci_driver ci_hdrc_pci_driver = { .name = UDC_DRIVER_NAME, - .id_table = ci13xxx_pci_id_table, - .probe = ci13xxx_pci_probe, - .remove = ci13xxx_pci_remove, + .id_table = ci_hdrc_pci_id_table, + .probe = ci_hdrc_pci_probe, + .remove = ci_hdrc_pci_remove, }; -module_pci_driver(ci13xxx_pci_driver); +module_pci_driver(ci_hdrc_pci_driver); MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>"); MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller"); MODULE_LICENSE("GPL"); MODULE_VERSION("June 2008"); +MODULE_ALIAS("platform:ci13xxx_pci"); diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 49b098bedf9b..94626409559a 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -43,8 +43,7 @@ * * TODO List * - OTG - * - Isochronous & Interrupt Traffic - * - Handle requests which spawns into several TDs + * - Interrupt Traffic * - GET_STATUS(device) - always reports 0 * - Gadget API (majority of optional features) * - Suspend & Remote Wakeup @@ -64,12 +63,16 @@ #include <linux/usb/gadget.h> #include <linux/usb/otg.h> #include <linux/usb/chipidea.h> +#include <linux/usb/of.h> +#include <linux/phy.h> +#include <linux/regulator/consumer.h> #include "ci.h" #include "udc.h" #include "bits.h" #include "host.h" #include "debug.h" +#include "otg.h" /* Controller register map */ static uintptr_t ci_regs_nolpm[] = { @@ -116,7 +119,7 @@ static uintptr_t ci_regs_lpm[] = { [OP_ENDPTCTRL] = 0x0ECUL, }; -static int hw_alloc_regmap(struct ci13xxx *ci, bool is_lpm) +static int hw_alloc_regmap(struct ci_hdrc *ci, bool is_lpm) { int i; @@ -148,7 +151,7 @@ static int hw_alloc_regmap(struct ci13xxx *ci, bool is_lpm) * * This function returns an error code */ -int hw_port_test_set(struct ci13xxx *ci, u8 mode) +int hw_port_test_set(struct ci_hdrc *ci, u8 mode) { const u8 TEST_MODE_MAX = 7; @@ -164,12 +167,12 @@ int hw_port_test_set(struct ci13xxx *ci, u8 mode) * * This function returns port test mode value */ -u8 hw_port_test_get(struct ci13xxx *ci) +u8 hw_port_test_get(struct ci_hdrc *ci) { return hw_read(ci, OP_PORTSC, PORTSC_PTC) >> __ffs(PORTSC_PTC); } -static int hw_device_init(struct ci13xxx *ci, void __iomem *base) +static int hw_device_init(struct ci_hdrc *ci, void __iomem *base) { u32 reg; @@ -196,6 +199,12 @@ static int hw_device_init(struct ci13xxx *ci, void __iomem *base) if (ci->hw_ep_max > ENDPT_MAX) return -ENODEV; + /* Disable all interrupts bits */ + hw_write(ci, OP_USBINTR, 0xffffffff, 0); + + /* Clear all interrupts status bits*/ + hw_write(ci, OP_USBSTS, 0xffffffff, 0xffffffff); + dev_dbg(ci->dev, "ChipIdea HDRC found, lpm: %d; cap: %p op: %p\n", ci->hw_bank.lpm, ci->hw_bank.cap, ci->hw_bank.op); @@ -208,13 +217,52 @@ static int hw_device_init(struct ci13xxx *ci, void __iomem *base) return 0; } +static void hw_phymode_configure(struct ci_hdrc *ci) +{ + u32 portsc, lpm, sts; + + switch (ci->platdata->phy_mode) { + case USBPHY_INTERFACE_MODE_UTMI: + portsc = PORTSC_PTS(PTS_UTMI); + lpm = DEVLC_PTS(PTS_UTMI); + break; + case USBPHY_INTERFACE_MODE_UTMIW: + portsc = PORTSC_PTS(PTS_UTMI) | PORTSC_PTW; + lpm = DEVLC_PTS(PTS_UTMI) | DEVLC_PTW; + break; + case USBPHY_INTERFACE_MODE_ULPI: + portsc = PORTSC_PTS(PTS_ULPI); + lpm = DEVLC_PTS(PTS_ULPI); + break; + case USBPHY_INTERFACE_MODE_SERIAL: + portsc = PORTSC_PTS(PTS_SERIAL); + lpm = DEVLC_PTS(PTS_SERIAL); + sts = 1; + break; + case USBPHY_INTERFACE_MODE_HSIC: + portsc = PORTSC_PTS(PTS_HSIC); + lpm = DEVLC_PTS(PTS_HSIC); + break; + default: + return; + } + + if (ci->hw_bank.lpm) { + hw_write(ci, OP_DEVLC, DEVLC_PTS(7) | DEVLC_PTW, lpm); + hw_write(ci, OP_DEVLC, DEVLC_STS, sts); + } else { + hw_write(ci, OP_PORTSC, PORTSC_PTS(7) | PORTSC_PTW, portsc); + hw_write(ci, OP_PORTSC, PORTSC_STS, sts); + } +} + /** * hw_device_reset: resets chip (execute without interruption) * @ci: the controller * * This function returns an error code */ -int hw_device_reset(struct ci13xxx *ci, u32 mode) +int hw_device_reset(struct ci_hdrc *ci, u32 mode) { /* should flush & stop before reset */ hw_write(ci, OP_ENDPTFLUSH, ~0, ~0); @@ -224,12 +272,11 @@ int hw_device_reset(struct ci13xxx *ci, u32 mode) while (hw_read(ci, OP_USBCMD, USBCMD_RST)) udelay(10); /* not RTOS friendly */ - if (ci->platdata->notify_event) ci->platdata->notify_event(ci, - CI13XXX_CONTROLLER_RESET_EVENT); + CI_HDRC_CONTROLLER_RESET_EVENT); - if (ci->platdata->flags & CI13XXX_DISABLE_STREAMING) + if (ci->platdata->flags & CI_HDRC_DISABLE_STREAMING) hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS); /* USBMODE should be configured step by step */ @@ -248,69 +295,108 @@ int hw_device_reset(struct ci13xxx *ci, u32 mode) } /** - * ci_otg_role - pick role based on ID pin state + * hw_wait_reg: wait the register value + * + * Sometimes, it needs to wait register value before going on. + * Eg, when switch to device mode, the vbus value should be lower + * than OTGSC_BSV before connects to host. + * * @ci: the controller + * @reg: register index + * @mask: mast bit + * @value: the bit value to wait + * @timeout_ms: timeout in millisecond + * + * This function returns an error code if timeout */ -static enum ci_role ci_otg_role(struct ci13xxx *ci) -{ - u32 sts = hw_read(ci, OP_OTGSC, ~0); - enum ci_role role = sts & OTGSC_ID - ? CI_ROLE_GADGET - : CI_ROLE_HOST; - - return role; -} - -/** - * ci_role_work - perform role changing based on ID pin - * @work: work struct - */ -static void ci_role_work(struct work_struct *work) +int hw_wait_reg(struct ci_hdrc *ci, enum ci_hw_regs reg, u32 mask, + u32 value, unsigned int timeout_ms) { - struct ci13xxx *ci = container_of(work, struct ci13xxx, work); - enum ci_role role = ci_otg_role(ci); - - if (role != ci->role) { - dev_dbg(ci->dev, "switching from %s to %s\n", - ci_role(ci)->name, ci->roles[role]->name); - - ci_role_stop(ci); - ci_role_start(ci, role); - enable_irq(ci->irq); + unsigned long elapse = jiffies + msecs_to_jiffies(timeout_ms); + + while (hw_read(ci, reg, mask) != value) { + if (time_after(jiffies, elapse)) { + dev_err(ci->dev, "timeout waiting for %08x in %d\n", + mask, reg); + return -ETIMEDOUT; + } + msleep(20); } + + return 0; } static irqreturn_t ci_irq(int irq, void *data) { - struct ci13xxx *ci = data; + struct ci_hdrc *ci = data; irqreturn_t ret = IRQ_NONE; u32 otgsc = 0; if (ci->is_otg) otgsc = hw_read(ci, OP_OTGSC, ~0); - if (ci->role != CI_ROLE_END) - ret = ci_role(ci)->irq(ci); + /* + * Handle id change interrupt, it indicates device/host function + * switch. + */ + if (ci->is_otg && (otgsc & OTGSC_IDIE) && (otgsc & OTGSC_IDIS)) { + ci->id_event = true; + ci_clear_otg_interrupt(ci, OTGSC_IDIS); + disable_irq_nosync(ci->irq); + queue_work(ci->wq, &ci->work); + return IRQ_HANDLED; + } - if (ci->is_otg && (otgsc & OTGSC_IDIS)) { - hw_write(ci, OP_OTGSC, OTGSC_IDIS, OTGSC_IDIS); + /* + * Handle vbus change interrupt, it indicates device connection + * and disconnection events. + */ + if (ci->is_otg && (otgsc & OTGSC_BSVIE) && (otgsc & OTGSC_BSVIS)) { + ci->b_sess_valid_event = true; + ci_clear_otg_interrupt(ci, OTGSC_BSVIS); disable_irq_nosync(ci->irq); queue_work(ci->wq, &ci->work); - ret = IRQ_HANDLED; + return IRQ_HANDLED; } + /* Handle device/host interrupt */ + if (ci->role != CI_ROLE_END) + ret = ci_role(ci)->irq(ci); + return ret; } +static int ci_get_platdata(struct device *dev, + struct ci_hdrc_platform_data *platdata) +{ + /* Get the vbus regulator */ + platdata->reg_vbus = devm_regulator_get(dev, "vbus"); + if (PTR_ERR(platdata->reg_vbus) == -EPROBE_DEFER) { + return -EPROBE_DEFER; + } else if (PTR_ERR(platdata->reg_vbus) == -ENODEV) { + platdata->reg_vbus = NULL; /* no vbus regualator is needed */ + } else if (IS_ERR(platdata->reg_vbus)) { + dev_err(dev, "Getting regulator error: %ld\n", + PTR_ERR(platdata->reg_vbus)); + return PTR_ERR(platdata->reg_vbus); + } + + return 0; +} + static DEFINE_IDA(ci_ida); -struct platform_device *ci13xxx_add_device(struct device *dev, +struct platform_device *ci_hdrc_add_device(struct device *dev, struct resource *res, int nres, - struct ci13xxx_platform_data *platdata) + struct ci_hdrc_platform_data *platdata) { struct platform_device *pdev; int id, ret; + ret = ci_get_platdata(dev, platdata); + if (ret) + return ERR_PTR(ret); + id = ida_simple_get(&ci_ida, 0, 0, GFP_KERNEL); if (id < 0) return ERR_PTR(id); @@ -346,23 +432,48 @@ put_id: ida_simple_remove(&ci_ida, id); return ERR_PTR(ret); } -EXPORT_SYMBOL_GPL(ci13xxx_add_device); +EXPORT_SYMBOL_GPL(ci_hdrc_add_device); -void ci13xxx_remove_device(struct platform_device *pdev) +void ci_hdrc_remove_device(struct platform_device *pdev) { int id = pdev->id; platform_device_unregister(pdev); ida_simple_remove(&ci_ida, id); } -EXPORT_SYMBOL_GPL(ci13xxx_remove_device); +EXPORT_SYMBOL_GPL(ci_hdrc_remove_device); + +static inline void ci_role_destroy(struct ci_hdrc *ci) +{ + ci_hdrc_gadget_destroy(ci); + ci_hdrc_host_destroy(ci); + if (ci->is_otg) + ci_hdrc_otg_destroy(ci); +} + +static void ci_get_otg_capable(struct ci_hdrc *ci) +{ + if (ci->platdata->flags & CI_HDRC_DUAL_ROLE_NOT_OTG) + ci->is_otg = false; + else + ci->is_otg = (hw_read(ci, CAP_DCCPARAMS, + DCCPARAMS_DC | DCCPARAMS_HC) + == (DCCPARAMS_DC | DCCPARAMS_HC)); + if (ci->is_otg) { + dev_dbg(ci->dev, "It is OTG capable controller\n"); + ci_disable_otg_interrupt(ci, OTGSC_INT_EN_BITS); + ci_clear_otg_interrupt(ci, OTGSC_INT_STATUS_BITS); + } +} static int ci_hdrc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct ci13xxx *ci; + struct ci_hdrc *ci; struct resource *res; void __iomem *base; int ret; + enum usb_dr_mode dr_mode; + struct device_node *of_node = dev->of_node ?: dev->parent->of_node; if (!dev->platform_data) { dev_err(dev, "platform data missing\n"); @@ -401,33 +512,63 @@ static int ci_hdrc_probe(struct platform_device *pdev) return -ENODEV; } - INIT_WORK(&ci->work, ci_role_work); - ci->wq = create_singlethread_workqueue("ci_otg"); - if (!ci->wq) { - dev_err(dev, "can't create workqueue\n"); - return -ENODEV; - } + ci_get_otg_capable(ci); + + if (!ci->platdata->phy_mode) + ci->platdata->phy_mode = of_usb_get_phy_mode(of_node); + + hw_phymode_configure(ci); + if (!ci->platdata->dr_mode) + ci->platdata->dr_mode = of_usb_get_dr_mode(of_node); + + if (ci->platdata->dr_mode == USB_DR_MODE_UNKNOWN) + ci->platdata->dr_mode = USB_DR_MODE_OTG; + + dr_mode = ci->platdata->dr_mode; /* initialize role(s) before the interrupt is requested */ - ret = ci_hdrc_host_init(ci); - if (ret) - dev_info(dev, "doesn't support host\n"); + if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_HOST) { + ret = ci_hdrc_host_init(ci); + if (ret) + dev_info(dev, "doesn't support host\n"); + } - ret = ci_hdrc_gadget_init(ci); - if (ret) - dev_info(dev, "doesn't support gadget\n"); + if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_PERIPHERAL) { + ret = ci_hdrc_gadget_init(ci); + if (ret) + dev_info(dev, "doesn't support gadget\n"); + } if (!ci->roles[CI_ROLE_HOST] && !ci->roles[CI_ROLE_GADGET]) { dev_err(dev, "no supported roles\n"); - ret = -ENODEV; - goto rm_wq; + return -ENODEV; + } + + if (ci->is_otg) { + ret = ci_hdrc_otg_init(ci); + if (ret) { + dev_err(dev, "init otg fails, ret = %d\n", ret); + goto stop; + } } if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET]) { - ci->is_otg = true; - /* ID pin needs 1ms debouce time, we delay 2ms for safe */ - mdelay(2); - ci->role = ci_otg_role(ci); + if (ci->is_otg) { + /* + * ID pin needs 1ms debouce time, + * we delay 2ms for safe. + */ + mdelay(2); + ci->role = ci_otg_role(ci); + ci_enable_otg_interrupt(ci, OTGSC_IDIE); + } else { + /* + * If the controller is not OTG capable, but support + * role switch, the defalt role is gadget, and the + * user can switch it through debugfs. + */ + ci->role = CI_ROLE_GADGET; + } } else { ci->role = ci->roles[CI_ROLE_HOST] ? CI_ROLE_HOST @@ -437,8 +578,7 @@ static int ci_hdrc_probe(struct platform_device *pdev) ret = ci_role_start(ci, ci->role); if (ret) { dev_err(dev, "can't start %s role\n", ci_role(ci)->name); - ret = -ENODEV; - goto rm_wq; + goto stop; } platform_set_drvdata(pdev, ci); @@ -447,32 +587,24 @@ static int ci_hdrc_probe(struct platform_device *pdev) if (ret) goto stop; - if (ci->is_otg) - hw_write(ci, OP_OTGSC, OTGSC_IDIE, OTGSC_IDIE); - ret = dbg_create_files(ci); if (!ret) return 0; free_irq(ci->irq, ci); stop: - ci_role_stop(ci); -rm_wq: - flush_workqueue(ci->wq); - destroy_workqueue(ci->wq); + ci_role_destroy(ci); return ret; } static int ci_hdrc_remove(struct platform_device *pdev) { - struct ci13xxx *ci = platform_get_drvdata(pdev); + struct ci_hdrc *ci = platform_get_drvdata(pdev); dbg_remove_files(ci); - flush_workqueue(ci->wq); - destroy_workqueue(ci->wq); free_irq(ci->irq, ci); - ci_role_stop(ci); + ci_role_destroy(ci); return 0; } @@ -488,7 +620,6 @@ static struct platform_driver ci_hdrc_driver = { module_platform_driver(ci_hdrc_driver); MODULE_ALIAS("platform:ci_hdrc"); -MODULE_ALIAS("platform:ci13xxx"); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("David Lopo <dlopo@chipidea.mips.com>"); MODULE_DESCRIPTION("ChipIdea HDRC Driver"); diff --git a/drivers/usb/chipidea/debug.c b/drivers/usb/chipidea/debug.c index 36a7063a6cba..96d899aee473 100644 --- a/drivers/usb/chipidea/debug.c +++ b/drivers/usb/chipidea/debug.c @@ -18,7 +18,7 @@ */ static int ci_device_show(struct seq_file *s, void *data) { - struct ci13xxx *ci = s->private; + struct ci_hdrc *ci = s->private; struct usb_gadget *gadget = &ci->gadget; seq_printf(s, "speed = %d\n", gadget->speed); @@ -58,7 +58,7 @@ static const struct file_operations ci_device_fops = { */ static int ci_port_test_show(struct seq_file *s, void *data) { - struct ci13xxx *ci = s->private; + struct ci_hdrc *ci = s->private; unsigned long flags; unsigned mode; @@ -78,7 +78,7 @@ static ssize_t ci_port_test_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos) { struct seq_file *s = file->private_data; - struct ci13xxx *ci = s->private; + struct ci_hdrc *ci = s->private; unsigned long flags; unsigned mode; char buf[32]; @@ -115,7 +115,7 @@ static const struct file_operations ci_port_test_fops = { */ static int ci_qheads_show(struct seq_file *s, void *data) { - struct ci13xxx *ci = s->private; + struct ci_hdrc *ci = s->private; unsigned long flags; unsigned i, j; @@ -126,15 +126,15 @@ static int ci_qheads_show(struct seq_file *s, void *data) spin_lock_irqsave(&ci->lock, flags); for (i = 0; i < ci->hw_ep_max/2; i++) { - struct ci13xxx_ep *mEpRx = &ci->ci13xxx_ep[i]; - struct ci13xxx_ep *mEpTx = - &ci->ci13xxx_ep[i + ci->hw_ep_max/2]; + struct ci_hw_ep *hweprx = &ci->ci_hw_ep[i]; + struct ci_hw_ep *hweptx = + &ci->ci_hw_ep[i + ci->hw_ep_max/2]; seq_printf(s, "EP=%02i: RX=%08X TX=%08X\n", - i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma); - for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++) + i, (u32)hweprx->qh.dma, (u32)hweptx->qh.dma); + for (j = 0; j < (sizeof(struct ci_hw_qh)/sizeof(u32)); j++) seq_printf(s, " %04X: %08X %08X\n", j, - *((u32 *)mEpRx->qh.ptr + j), - *((u32 *)mEpTx->qh.ptr + j)); + *((u32 *)hweprx->qh.ptr + j), + *((u32 *)hweptx->qh.ptr + j)); } spin_unlock_irqrestore(&ci->lock, flags); @@ -158,11 +158,12 @@ static const struct file_operations ci_qheads_fops = { */ static int ci_requests_show(struct seq_file *s, void *data) { - struct ci13xxx *ci = s->private; + struct ci_hdrc *ci = s->private; unsigned long flags; struct list_head *ptr = NULL; - struct ci13xxx_req *req = NULL; - unsigned i, j, qsize = sizeof(struct ci13xxx_td)/sizeof(u32); + struct ci_hw_req *req = NULL; + struct td_node *node, *tmpnode; + unsigned i, j, qsize = sizeof(struct ci_hw_td)/sizeof(u32); if (ci->role != CI_ROLE_GADGET) { seq_printf(s, "not in gadget mode\n"); @@ -171,16 +172,20 @@ static int ci_requests_show(struct seq_file *s, void *data) spin_lock_irqsave(&ci->lock, flags); for (i = 0; i < ci->hw_ep_max; i++) - list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue) { - req = list_entry(ptr, struct ci13xxx_req, queue); - - seq_printf(s, "EP=%02i: TD=%08X %s\n", - i % (ci->hw_ep_max / 2), (u32)req->dma, - ((i < ci->hw_ep_max/2) ? "RX" : "TX")); - - for (j = 0; j < qsize; j++) - seq_printf(s, " %04X: %08X\n", j, - *((u32 *)req->ptr + j)); + list_for_each(ptr, &ci->ci_hw_ep[i].qh.queue) { + req = list_entry(ptr, struct ci_hw_req, queue); + + list_for_each_entry_safe(node, tmpnode, &req->tds, td) { + seq_printf(s, "EP=%02i: TD=%08X %s\n", + i % (ci->hw_ep_max / 2), + (u32)node->dma, + ((i < ci->hw_ep_max/2) ? + "RX" : "TX")); + + for (j = 0; j < qsize; j++) + seq_printf(s, " %04X: %08X\n", j, + *((u32 *)node->ptr + j)); + } } spin_unlock_irqrestore(&ci->lock, flags); @@ -201,7 +206,7 @@ static const struct file_operations ci_requests_fops = { static int ci_role_show(struct seq_file *s, void *data) { - struct ci13xxx *ci = s->private; + struct ci_hdrc *ci = s->private; seq_printf(s, "%s\n", ci_role(ci)->name); @@ -212,7 +217,7 @@ static ssize_t ci_role_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos) { struct seq_file *s = file->private_data; - struct ci13xxx *ci = s->private; + struct ci_hdrc *ci = s->private; enum ci_role role; char buf[8]; int ret; @@ -254,7 +259,7 @@ static const struct file_operations ci_role_fops = { * * This function returns an error code */ -int dbg_create_files(struct ci13xxx *ci) +int dbg_create_files(struct ci_hdrc *ci) { struct dentry *dent; @@ -295,7 +300,7 @@ err: * dbg_remove_files: destroys the attribute interface * @ci: device */ -void dbg_remove_files(struct ci13xxx *ci) +void dbg_remove_files(struct ci_hdrc *ci) { debugfs_remove_recursive(ci->debugfs); } diff --git a/drivers/usb/chipidea/debug.h b/drivers/usb/chipidea/debug.h index 7ca6ca0a24a5..e16478c4a943 100644 --- a/drivers/usb/chipidea/debug.h +++ b/drivers/usb/chipidea/debug.h @@ -14,15 +14,15 @@ #define __DRIVERS_USB_CHIPIDEA_DEBUG_H #ifdef CONFIG_USB_CHIPIDEA_DEBUG -int dbg_create_files(struct ci13xxx *ci); -void dbg_remove_files(struct ci13xxx *ci); +int dbg_create_files(struct ci_hdrc *ci); +void dbg_remove_files(struct ci_hdrc *ci); #else -static inline int dbg_create_files(struct ci13xxx *ci) +static inline int dbg_create_files(struct ci_hdrc *ci) { return 0; } -static inline void dbg_remove_files(struct ci13xxx *ci) +static inline void dbg_remove_files(struct ci_hdrc *ci) { } #endif diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 8e9d31277c43..6f96795dd20c 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -24,6 +24,7 @@ #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/usb/chipidea.h> +#include <linux/regulator/consumer.h> #include "../host/ehci.h" @@ -33,12 +34,12 @@ static struct hc_driver __read_mostly ci_ehci_hc_driver; -static irqreturn_t host_irq(struct ci13xxx *ci) +static irqreturn_t host_irq(struct ci_hdrc *ci) { return usb_hcd_irq(ci->irq, ci->hcd); } -static int host_start(struct ci13xxx *ci) +static int host_start(struct ci_hdrc *ci) { struct usb_hcd *hcd; struct ehci_hcd *ehci; @@ -63,28 +64,56 @@ static int host_start(struct ci13xxx *ci) ehci = hcd_to_ehci(hcd); ehci->caps = ci->hw_bank.cap; ehci->has_hostpc = ci->hw_bank.lpm; + ehci->has_tdi_phy_lpm = ci->hw_bank.lpm; + + if (ci->platdata->reg_vbus) { + ret = regulator_enable(ci->platdata->reg_vbus); + if (ret) { + dev_err(ci->dev, + "Failed to enable vbus regulator, ret=%d\n", + ret); + goto put_hcd; + } + } ret = usb_add_hcd(hcd, 0, 0); if (ret) - usb_put_hcd(hcd); + goto disable_reg; else ci->hcd = hcd; - if (ci->platdata->flags & CI13XXX_DISABLE_STREAMING) + if (ci->platdata->flags & CI_HDRC_DISABLE_STREAMING) hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS); return ret; + +disable_reg: + regulator_disable(ci->platdata->reg_vbus); + +put_hcd: + usb_put_hcd(hcd); + + return ret; } -static void host_stop(struct ci13xxx *ci) +static void host_stop(struct ci_hdrc *ci) { struct usb_hcd *hcd = ci->hcd; usb_remove_hcd(hcd); usb_put_hcd(hcd); + if (ci->platdata->reg_vbus) + regulator_disable(ci->platdata->reg_vbus); +} + + +void ci_hdrc_host_destroy(struct ci_hdrc *ci) +{ + if (ci->role == CI_ROLE_HOST) + host_stop(ci); } -int ci_hdrc_host_init(struct ci13xxx *ci) +int ci_hdrc_host_init(struct ci_hdrc *ci) { struct ci_role_driver *rdrv; diff --git a/drivers/usb/chipidea/host.h b/drivers/usb/chipidea/host.h index 761fb1fd6d99..5707bf379bfb 100644 --- a/drivers/usb/chipidea/host.h +++ b/drivers/usb/chipidea/host.h @@ -3,15 +3,21 @@ #ifdef CONFIG_USB_CHIPIDEA_HOST -int ci_hdrc_host_init(struct ci13xxx *ci); +int ci_hdrc_host_init(struct ci_hdrc *ci); +void ci_hdrc_host_destroy(struct ci_hdrc *ci); #else -static inline int ci_hdrc_host_init(struct ci13xxx *ci) +static inline int ci_hdrc_host_init(struct ci_hdrc *ci) { return -ENXIO; } +static inline void ci_hdrc_host_destroy(struct ci_hdrc *ci) +{ + +} + #endif #endif /* __DRIVERS_USB_CHIPIDEA_HOST_H */ diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c new file mode 100644 index 000000000000..39bd7ec8bf75 --- /dev/null +++ b/drivers/usb/chipidea/otg.c @@ -0,0 +1,120 @@ +/* + * otg.c - ChipIdea USB IP core OTG driver + * + * Copyright (C) 2013 Freescale Semiconductor, Inc. + * + * Author: Peter Chen + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * This file mainly handles otgsc register, it may include OTG operation + * in the future. + */ + +#include <linux/usb/otg.h> +#include <linux/usb/gadget.h> +#include <linux/usb/chipidea.h> + +#include "ci.h" +#include "bits.h" +#include "otg.h" + +/** + * ci_otg_role - pick role based on ID pin state + * @ci: the controller + */ +enum ci_role ci_otg_role(struct ci_hdrc *ci) +{ + u32 sts = hw_read(ci, OP_OTGSC, ~0); + enum ci_role role = sts & OTGSC_ID + ? CI_ROLE_GADGET + : CI_ROLE_HOST; + + return role; +} + +void ci_handle_vbus_change(struct ci_hdrc *ci) +{ + u32 otgsc; + + if (!ci->is_otg) + return; + + otgsc = hw_read(ci, OP_OTGSC, ~0); + + if (otgsc & OTGSC_BSV) + usb_gadget_vbus_connect(&ci->gadget); + else + usb_gadget_vbus_disconnect(&ci->gadget); +} + +#define CI_VBUS_STABLE_TIMEOUT_MS 5000 +static void ci_handle_id_switch(struct ci_hdrc *ci) +{ + enum ci_role role = ci_otg_role(ci); + + if (role != ci->role) { + dev_dbg(ci->dev, "switching from %s to %s\n", + ci_role(ci)->name, ci->roles[role]->name); + + ci_role_stop(ci); + /* wait vbus lower than OTGSC_BSV */ + hw_wait_reg(ci, OP_OTGSC, OTGSC_BSV, 0, + CI_VBUS_STABLE_TIMEOUT_MS); + ci_role_start(ci, role); + } +} +/** + * ci_otg_work - perform otg (vbus/id) event handle + * @work: work struct + */ +static void ci_otg_work(struct work_struct *work) +{ + struct ci_hdrc *ci = container_of(work, struct ci_hdrc, work); + + if (ci->id_event) { + ci->id_event = false; + ci_handle_id_switch(ci); + } else if (ci->b_sess_valid_event) { + ci->b_sess_valid_event = false; + ci_handle_vbus_change(ci); + } else + dev_err(ci->dev, "unexpected event occurs at %s\n", __func__); + + enable_irq(ci->irq); +} + + +/** + * ci_hdrc_otg_init - initialize otg struct + * ci: the controller + */ +int ci_hdrc_otg_init(struct ci_hdrc *ci) +{ + INIT_WORK(&ci->work, ci_otg_work); + ci->wq = create_singlethread_workqueue("ci_otg"); + if (!ci->wq) { + dev_err(ci->dev, "can't create workqueue\n"); + return -ENODEV; + } + + return 0; +} + +/** + * ci_hdrc_otg_destroy - destroy otg struct + * ci: the controller + */ +void ci_hdrc_otg_destroy(struct ci_hdrc *ci) +{ + if (ci->wq) { + flush_workqueue(ci->wq); + destroy_workqueue(ci->wq); + } + ci_disable_otg_interrupt(ci, OTGSC_INT_EN_BITS); + ci_clear_otg_interrupt(ci, OTGSC_INT_STATUS_BITS); +} diff --git a/drivers/usb/chipidea/otg.h b/drivers/usb/chipidea/otg.h new file mode 100644 index 000000000000..2d9f090733bc --- /dev/null +++ b/drivers/usb/chipidea/otg.h @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2013 Freescale Semiconductor, Inc. + * + * Author: Peter Chen + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __DRIVERS_USB_CHIPIDEA_OTG_H +#define __DRIVERS_USB_CHIPIDEA_OTG_H + +static inline void ci_clear_otg_interrupt(struct ci_hdrc *ci, u32 bits) +{ + /* Only clear request bits */ + hw_write(ci, OP_OTGSC, OTGSC_INT_STATUS_BITS, bits); +} + +static inline void ci_enable_otg_interrupt(struct ci_hdrc *ci, u32 bits) +{ + hw_write(ci, OP_OTGSC, bits, bits); +} + +static inline void ci_disable_otg_interrupt(struct ci_hdrc *ci, u32 bits) +{ + hw_write(ci, OP_OTGSC, bits, 0); +} + +int ci_hdrc_otg_init(struct ci_hdrc *ci); +void ci_hdrc_otg_destroy(struct ci_hdrc *ci); +enum ci_role ci_otg_role(struct ci_hdrc *ci); +void ci_handle_vbus_change(struct ci_hdrc *ci); + +#endif /* __DRIVERS_USB_CHIPIDEA_OTG_H */ diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 519ead2443c5..6b4c2f2eb946 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -27,6 +27,7 @@ #include "udc.h" #include "bits.h" #include "debug.h" +#include "otg.h" /* control endpoint description */ static const struct usb_endpoint_descriptor @@ -61,7 +62,7 @@ static inline int hw_ep_bit(int num, int dir) return num + (dir ? 16 : 0); } -static inline int ep_to_bit(struct ci13xxx *ci, int n) +static inline int ep_to_bit(struct ci_hdrc *ci, int n) { int fill = 16 - ci->hw_ep_max / 2; @@ -77,15 +78,17 @@ static inline int ep_to_bit(struct ci13xxx *ci, int n) * * This function returns an error code */ -static int hw_device_state(struct ci13xxx *ci, u32 dma) +static int hw_device_state(struct ci_hdrc *ci, u32 dma) { if (dma) { hw_write(ci, OP_ENDPTLISTADDR, ~0, dma); /* interrupt, error, port change, reset, sleep/suspend */ hw_write(ci, OP_USBINTR, ~0, USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI); + hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS); } else { hw_write(ci, OP_USBINTR, ~0, 0); + hw_write(ci, OP_USBCMD, USBCMD_RS, 0); } return 0; } @@ -97,7 +100,7 @@ static int hw_device_state(struct ci13xxx *ci, u32 dma) * * This function returns an error code */ -static int hw_ep_flush(struct ci13xxx *ci, int num, int dir) +static int hw_ep_flush(struct ci_hdrc *ci, int num, int dir) { int n = hw_ep_bit(num, dir); @@ -118,7 +121,7 @@ static int hw_ep_flush(struct ci13xxx *ci, int num, int dir) * * This function returns an error code */ -static int hw_ep_disable(struct ci13xxx *ci, int num, int dir) +static int hw_ep_disable(struct ci_hdrc *ci, int num, int dir) { hw_ep_flush(ci, num, dir); hw_write(ci, OP_ENDPTCTRL + num, @@ -134,7 +137,7 @@ static int hw_ep_disable(struct ci13xxx *ci, int num, int dir) * * This function returns an error code */ -static int hw_ep_enable(struct ci13xxx *ci, int num, int dir, int type) +static int hw_ep_enable(struct ci_hdrc *ci, int num, int dir, int type) { u32 mask, data; @@ -168,7 +171,7 @@ static int hw_ep_enable(struct ci13xxx *ci, int num, int dir, int type) * * This function returns 1 if endpoint halted */ -static int hw_ep_get_halt(struct ci13xxx *ci, int num, int dir) +static int hw_ep_get_halt(struct ci_hdrc *ci, int num, int dir) { u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS; @@ -182,7 +185,7 @@ static int hw_ep_get_halt(struct ci13xxx *ci, int num, int dir) * * This function returns setup status */ -static int hw_test_and_clear_setup_status(struct ci13xxx *ci, int n) +static int hw_test_and_clear_setup_status(struct ci_hdrc *ci, int n) { n = ep_to_bit(ci, n); return hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(n)); @@ -196,7 +199,7 @@ static int hw_test_and_clear_setup_status(struct ci13xxx *ci, int n) * * This function returns an error code */ -static int hw_ep_prime(struct ci13xxx *ci, int num, int dir, int is_ctrl) +static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl) { int n = hw_ep_bit(num, dir); @@ -223,13 +226,13 @@ static int hw_ep_prime(struct ci13xxx *ci, int num, int dir, int is_ctrl) * * This function returns an error code */ -static int hw_ep_set_halt(struct ci13xxx *ci, int num, int dir, int value) +static int hw_ep_set_halt(struct ci_hdrc *ci, int num, int dir, int value) { if (value != 0 && value != 1) return -EINVAL; do { - enum ci13xxx_regs reg = OP_ENDPTCTRL + num; + enum ci_hw_regs reg = OP_ENDPTCTRL + num; u32 mask_xs = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS; u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR; @@ -246,7 +249,7 @@ static int hw_ep_set_halt(struct ci13xxx *ci, int num, int dir, int value) * * This function returns true if high speed port */ -static int hw_port_is_high_speed(struct ci13xxx *ci) +static int hw_port_is_high_speed(struct ci_hdrc *ci) { return ci->hw_bank.lpm ? hw_read(ci, OP_DEVLC, DEVLC_PSPD) : hw_read(ci, OP_PORTSC, PORTSC_HSP); @@ -257,7 +260,7 @@ static int hw_port_is_high_speed(struct ci13xxx *ci) * * This function returns register data */ -static u32 hw_read_intr_enable(struct ci13xxx *ci) +static u32 hw_read_intr_enable(struct ci_hdrc *ci) { return hw_read(ci, OP_USBINTR, ~0); } @@ -267,7 +270,7 @@ static u32 hw_read_intr_enable(struct ci13xxx *ci) * * This function returns register data */ -static u32 hw_read_intr_status(struct ci13xxx *ci) +static u32 hw_read_intr_status(struct ci_hdrc *ci) { return hw_read(ci, OP_USBSTS, ~0); } @@ -279,7 +282,7 @@ static u32 hw_read_intr_status(struct ci13xxx *ci) * * This function returns complete status */ -static int hw_test_and_clear_complete(struct ci13xxx *ci, int n) +static int hw_test_and_clear_complete(struct ci_hdrc *ci, int n) { n = ep_to_bit(ci, n); return hw_test_and_clear(ci, OP_ENDPTCOMPLETE, BIT(n)); @@ -291,7 +294,7 @@ static int hw_test_and_clear_complete(struct ci13xxx *ci, int n) * * This function returns active interrutps */ -static u32 hw_test_and_clear_intr_active(struct ci13xxx *ci) +static u32 hw_test_and_clear_intr_active(struct ci_hdrc *ci) { u32 reg = hw_read_intr_status(ci) & hw_read_intr_enable(ci); @@ -305,7 +308,7 @@ static u32 hw_test_and_clear_intr_active(struct ci13xxx *ci) * * This function returns guard value */ -static int hw_test_and_clear_setup_guard(struct ci13xxx *ci) +static int hw_test_and_clear_setup_guard(struct ci_hdrc *ci) { return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, 0); } @@ -316,7 +319,7 @@ static int hw_test_and_clear_setup_guard(struct ci13xxx *ci) * * This function returns guard value */ -static int hw_test_and_set_setup_guard(struct ci13xxx *ci) +static int hw_test_and_set_setup_guard(struct ci_hdrc *ci) { return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW); } @@ -328,7 +331,7 @@ static int hw_test_and_set_setup_guard(struct ci13xxx *ci) * This function explicitly sets the address, without the "USBADRA" (advance) * feature, which is not supported by older versions of the controller. */ -static void hw_usb_set_address(struct ci13xxx *ci, u8 value) +static void hw_usb_set_address(struct ci_hdrc *ci, u8 value) { hw_write(ci, OP_DEVICEADDR, DEVICEADDR_USBADR, value << __ffs(DEVICEADDR_USBADR)); @@ -340,7 +343,7 @@ static void hw_usb_set_address(struct ci13xxx *ci, u8 value) * * This function returns an error code */ -static int hw_usb_reset(struct ci13xxx *ci) +static int hw_usb_reset(struct ci_hdrc *ci) { hw_usb_set_address(ci, 0); @@ -368,11 +371,60 @@ static int hw_usb_reset(struct ci13xxx *ci) /****************************************************************************** * UTIL block *****************************************************************************/ + +static int add_td_to_list(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq, + unsigned length) +{ + int i; + u32 temp; + struct td_node *lastnode, *node = kzalloc(sizeof(struct td_node), + GFP_ATOMIC); + + if (node == NULL) + return -ENOMEM; + + node->ptr = dma_pool_alloc(hwep->td_pool, GFP_ATOMIC, + &node->dma); + if (node->ptr == NULL) { + kfree(node); + return -ENOMEM; + } + + memset(node->ptr, 0, sizeof(struct ci_hw_td)); + node->ptr->token = cpu_to_le32(length << __ffs(TD_TOTAL_BYTES)); + node->ptr->token &= cpu_to_le32(TD_TOTAL_BYTES); + node->ptr->token |= cpu_to_le32(TD_STATUS_ACTIVE); + + temp = (u32) (hwreq->req.dma + hwreq->req.actual); + if (length) { + node->ptr->page[0] = cpu_to_le32(temp); + for (i = 1; i < TD_PAGE_COUNT; i++) { + u32 page = temp + i * CI_HDRC_PAGE_SIZE; + page &= ~TD_RESERVED_MASK; + node->ptr->page[i] = cpu_to_le32(page); + } + } + + hwreq->req.actual += length; + + if (!list_empty(&hwreq->tds)) { + /* get the last entry */ + lastnode = list_entry(hwreq->tds.prev, + struct td_node, td); + lastnode->ptr->next = cpu_to_le32(node->dma); + } + + INIT_LIST_HEAD(&node->td); + list_add_tail(&node->td, &hwreq->tds); + + return 0; +} + /** * _usb_addr: calculates endpoint address from direction & number * @ep: endpoint */ -static inline u8 _usb_addr(struct ci13xxx_ep *ep) +static inline u8 _usb_addr(struct ci_hw_ep *ep) { return ((ep->dir == TX) ? USB_ENDPOINT_DIR_MASK : 0) | ep->num; } @@ -380,75 +432,73 @@ static inline u8 _usb_addr(struct ci13xxx_ep *ep) /** * _hardware_queue: configures a request at hardware level * @gadget: gadget - * @mEp: endpoint + * @hwep: endpoint * * This function returns an error code */ -static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) +static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq) { - struct ci13xxx *ci = mEp->ci; - unsigned i; + struct ci_hdrc *ci = hwep->ci; int ret = 0; - unsigned length = mReq->req.length; + unsigned rest = hwreq->req.length; + int pages = TD_PAGE_COUNT; + struct td_node *firstnode, *lastnode; /* don't queue twice */ - if (mReq->req.status == -EALREADY) + if (hwreq->req.status == -EALREADY) return -EALREADY; - mReq->req.status = -EALREADY; - - if (mReq->req.zero && length && (length % mEp->ep.maxpacket == 0)) { - mReq->zptr = dma_pool_alloc(mEp->td_pool, GFP_ATOMIC, - &mReq->zdma); - if (mReq->zptr == NULL) - return -ENOMEM; + hwreq->req.status = -EALREADY; - memset(mReq->zptr, 0, sizeof(*mReq->zptr)); - mReq->zptr->next = cpu_to_le32(TD_TERMINATE); - mReq->zptr->token = cpu_to_le32(TD_STATUS_ACTIVE); - if (!mReq->req.no_interrupt) - mReq->zptr->token |= cpu_to_le32(TD_IOC); - } - ret = usb_gadget_map_request(&ci->gadget, &mReq->req, mEp->dir); + ret = usb_gadget_map_request(&ci->gadget, &hwreq->req, hwep->dir); if (ret) return ret; /* - * TD configuration - * TODO - handle requests which spawns into several TDs + * The first buffer could be not page aligned. + * In that case we have to span into one extra td. */ - memset(mReq->ptr, 0, sizeof(*mReq->ptr)); - mReq->ptr->token = cpu_to_le32(length << __ffs(TD_TOTAL_BYTES)); - mReq->ptr->token &= cpu_to_le32(TD_TOTAL_BYTES); - mReq->ptr->token |= cpu_to_le32(TD_STATUS_ACTIVE); - if (mReq->zptr) { - mReq->ptr->next = cpu_to_le32(mReq->zdma); - } else { - mReq->ptr->next = cpu_to_le32(TD_TERMINATE); - if (!mReq->req.no_interrupt) - mReq->ptr->token |= cpu_to_le32(TD_IOC); - } - mReq->ptr->page[0] = cpu_to_le32(mReq->req.dma); - for (i = 1; i < TD_PAGE_COUNT; i++) { - u32 page = mReq->req.dma + i * CI13XXX_PAGE_SIZE; - page &= ~TD_RESERVED_MASK; - mReq->ptr->page[i] = cpu_to_le32(page); + if (hwreq->req.dma % PAGE_SIZE) + pages--; + + if (rest == 0) + add_td_to_list(hwep, hwreq, 0); + + while (rest > 0) { + unsigned count = min(hwreq->req.length - hwreq->req.actual, + (unsigned)(pages * CI_HDRC_PAGE_SIZE)); + add_td_to_list(hwep, hwreq, count); + rest -= count; } + if (hwreq->req.zero && hwreq->req.length + && (hwreq->req.length % hwep->ep.maxpacket == 0)) + add_td_to_list(hwep, hwreq, 0); + + firstnode = list_first_entry(&hwreq->tds, struct td_node, td); + + lastnode = list_entry(hwreq->tds.prev, + struct td_node, td); + + lastnode->ptr->next = cpu_to_le32(TD_TERMINATE); + if (!hwreq->req.no_interrupt) + lastnode->ptr->token |= cpu_to_le32(TD_IOC); wmb(); - if (!list_empty(&mEp->qh.queue)) { - struct ci13xxx_req *mReqPrev; - int n = hw_ep_bit(mEp->num, mEp->dir); + hwreq->req.actual = 0; + if (!list_empty(&hwep->qh.queue)) { + struct ci_hw_req *hwreqprev; + int n = hw_ep_bit(hwep->num, hwep->dir); int tmp_stat; - u32 next = mReq->dma & TD_ADDR_MASK; - - mReqPrev = list_entry(mEp->qh.queue.prev, - struct ci13xxx_req, queue); - if (mReqPrev->zptr) - mReqPrev->zptr->next = cpu_to_le32(next); - else - mReqPrev->ptr->next = cpu_to_le32(next); + struct td_node *prevlastnode; + u32 next = firstnode->dma & TD_ADDR_MASK; + + hwreqprev = list_entry(hwep->qh.queue.prev, + struct ci_hw_req, queue); + prevlastnode = list_entry(hwreqprev->tds.prev, + struct td_node, td); + + prevlastnode->ptr->next = cpu_to_le32(next); wmb(); if (hw_read(ci, OP_ENDPTPRIME, BIT(n))) goto done; @@ -462,99 +512,152 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) } /* QH configuration */ - mEp->qh.ptr->td.next = cpu_to_le32(mReq->dma); /* TERMINATE = 0 */ - mEp->qh.ptr->td.token &= + hwep->qh.ptr->td.next = cpu_to_le32(firstnode->dma); + hwep->qh.ptr->td.token &= cpu_to_le32(~(TD_STATUS_HALTED|TD_STATUS_ACTIVE)); + if (hwep->type == USB_ENDPOINT_XFER_ISOC) { + u32 mul = hwreq->req.length / hwep->ep.maxpacket; + + if (hwreq->req.length % hwep->ep.maxpacket) + mul++; + hwep->qh.ptr->cap |= mul << __ffs(QH_MULT); + } + wmb(); /* synchronize before ep prime */ - ret = hw_ep_prime(ci, mEp->num, mEp->dir, - mEp->type == USB_ENDPOINT_XFER_CONTROL); + ret = hw_ep_prime(ci, hwep->num, hwep->dir, + hwep->type == USB_ENDPOINT_XFER_CONTROL); done: return ret; } +/* + * free_pending_td: remove a pending request for the endpoint + * @hwep: endpoint + */ +static void free_pending_td(struct ci_hw_ep *hwep) +{ + struct td_node *pending = hwep->pending_td; + + dma_pool_free(hwep->td_pool, pending->ptr, pending->dma); + hwep->pending_td = NULL; + kfree(pending); +} + /** * _hardware_dequeue: handles a request at hardware level * @gadget: gadget - * @mEp: endpoint + * @hwep: endpoint * * This function returns an error code */ -static int _hardware_dequeue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) +static int _hardware_dequeue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq) { - u32 tmptoken = le32_to_cpu(mReq->ptr->token); + u32 tmptoken; + struct td_node *node, *tmpnode; + unsigned remaining_length; + unsigned actual = hwreq->req.length; - if (mReq->req.status != -EALREADY) + if (hwreq->req.status != -EALREADY) return -EINVAL; - if ((TD_STATUS_ACTIVE & tmptoken) != 0) - return -EBUSY; + hwreq->req.status = 0; - if (mReq->zptr) { - if ((cpu_to_le32(TD_STATUS_ACTIVE) & mReq->zptr->token) != 0) + list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) { + tmptoken = le32_to_cpu(node->ptr->token); + if ((TD_STATUS_ACTIVE & tmptoken) != 0) { + hwreq->req.status = -EALREADY; return -EBUSY; - dma_pool_free(mEp->td_pool, mReq->zptr, mReq->zdma); - mReq->zptr = NULL; - } + } + + remaining_length = (tmptoken & TD_TOTAL_BYTES); + remaining_length >>= __ffs(TD_TOTAL_BYTES); + actual -= remaining_length; + + hwreq->req.status = tmptoken & TD_STATUS; + if ((TD_STATUS_HALTED & hwreq->req.status)) { + hwreq->req.status = -EPIPE; + break; + } else if ((TD_STATUS_DT_ERR & hwreq->req.status)) { + hwreq->req.status = -EPROTO; + break; + } else if ((TD_STATUS_TR_ERR & hwreq->req.status)) { + hwreq->req.status = -EILSEQ; + break; + } - mReq->req.status = 0; + if (remaining_length) { + if (hwep->dir) { + hwreq->req.status = -EPROTO; + break; + } + } + /* + * As the hardware could still address the freed td + * which will run the udc unusable, the cleanup of the + * td has to be delayed by one. + */ + if (hwep->pending_td) + free_pending_td(hwep); + + hwep->pending_td = node; + list_del_init(&node->td); + } - usb_gadget_unmap_request(&mEp->ci->gadget, &mReq->req, mEp->dir); + usb_gadget_unmap_request(&hwep->ci->gadget, &hwreq->req, hwep->dir); - mReq->req.status = tmptoken & TD_STATUS; - if ((TD_STATUS_HALTED & mReq->req.status) != 0) - mReq->req.status = -1; - else if ((TD_STATUS_DT_ERR & mReq->req.status) != 0) - mReq->req.status = -1; - else if ((TD_STATUS_TR_ERR & mReq->req.status) != 0) - mReq->req.status = -1; + hwreq->req.actual += actual; - mReq->req.actual = tmptoken & TD_TOTAL_BYTES; - mReq->req.actual >>= __ffs(TD_TOTAL_BYTES); - mReq->req.actual = mReq->req.length - mReq->req.actual; - mReq->req.actual = mReq->req.status ? 0 : mReq->req.actual; + if (hwreq->req.status) + return hwreq->req.status; - return mReq->req.actual; + return hwreq->req.actual; } /** * _ep_nuke: dequeues all endpoint requests - * @mEp: endpoint + * @hwep: endpoint * * This function returns an error code * Caller must hold lock */ -static int _ep_nuke(struct ci13xxx_ep *mEp) -__releases(mEp->lock) -__acquires(mEp->lock) +static int _ep_nuke(struct ci_hw_ep *hwep) +__releases(hwep->lock) +__acquires(hwep->lock) { - if (mEp == NULL) + struct td_node *node, *tmpnode; + if (hwep == NULL) return -EINVAL; - hw_ep_flush(mEp->ci, mEp->num, mEp->dir); + hw_ep_flush(hwep->ci, hwep->num, hwep->dir); - while (!list_empty(&mEp->qh.queue)) { + while (!list_empty(&hwep->qh.queue)) { /* pop oldest request */ - struct ci13xxx_req *mReq = \ - list_entry(mEp->qh.queue.next, - struct ci13xxx_req, queue); - - if (mReq->zptr) { - dma_pool_free(mEp->td_pool, mReq->zptr, mReq->zdma); - mReq->zptr = NULL; + struct ci_hw_req *hwreq = list_entry(hwep->qh.queue.next, + struct ci_hw_req, queue); + + list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) { + dma_pool_free(hwep->td_pool, node->ptr, node->dma); + list_del_init(&node->td); + node->ptr = NULL; + kfree(node); } - list_del_init(&mReq->queue); - mReq->req.status = -ESHUTDOWN; + list_del_init(&hwreq->queue); + hwreq->req.status = -ESHUTDOWN; - if (mReq->req.complete != NULL) { - spin_unlock(mEp->lock); - mReq->req.complete(&mEp->ep, &mReq->req); - spin_lock(mEp->lock); + if (hwreq->req.complete != NULL) { + spin_unlock(hwep->lock); + hwreq->req.complete(&hwep->ep, &hwreq->req); + spin_lock(hwep->lock); } } + + if (hwep->pending_td) + free_pending_td(hwep); + return 0; } @@ -567,7 +670,7 @@ __acquires(mEp->lock) static int _gadget_stop_activity(struct usb_gadget *gadget) { struct usb_ep *ep; - struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget); + struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget); unsigned long flags; spin_lock_irqsave(&ci->lock, flags); @@ -608,7 +711,7 @@ static int _gadget_stop_activity(struct usb_gadget *gadget) * * This function resets USB engine after a bus reset occurred */ -static void isr_reset_handler(struct ci13xxx *ci) +static void isr_reset_handler(struct ci_hdrc *ci) __releases(ci->lock) __acquires(ci->lock) { @@ -658,47 +761,48 @@ static void isr_get_status_complete(struct usb_ep *ep, struct usb_request *req) static int _ep_queue(struct usb_ep *ep, struct usb_request *req, gfp_t __maybe_unused gfp_flags) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req); - struct ci13xxx *ci = mEp->ci; + struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep); + struct ci_hw_req *hwreq = container_of(req, struct ci_hw_req, req); + struct ci_hdrc *ci = hwep->ci; int retval = 0; - if (ep == NULL || req == NULL || mEp->ep.desc == NULL) + if (ep == NULL || req == NULL || hwep->ep.desc == NULL) return -EINVAL; - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) { + if (hwep->type == USB_ENDPOINT_XFER_CONTROL) { if (req->length) - mEp = (ci->ep0_dir == RX) ? + hwep = (ci->ep0_dir == RX) ? ci->ep0out : ci->ep0in; - if (!list_empty(&mEp->qh.queue)) { - _ep_nuke(mEp); + if (!list_empty(&hwep->qh.queue)) { + _ep_nuke(hwep); retval = -EOVERFLOW; - dev_warn(mEp->ci->dev, "endpoint ctrl %X nuked\n", - _usb_addr(mEp)); + dev_warn(hwep->ci->dev, "endpoint ctrl %X nuked\n", + _usb_addr(hwep)); } } - /* first nuke then test link, e.g. previous status has not sent */ - if (!list_empty(&mReq->queue)) { - dev_err(mEp->ci->dev, "request already in queue\n"); - return -EBUSY; + if (usb_endpoint_xfer_isoc(hwep->ep.desc) && + hwreq->req.length > (1 + hwep->ep.mult) * hwep->ep.maxpacket) { + dev_err(hwep->ci->dev, "request length too big for isochronous\n"); + return -EMSGSIZE; } - if (req->length > (TD_PAGE_COUNT - 1) * CI13XXX_PAGE_SIZE) { - dev_err(mEp->ci->dev, "request bigger than one td\n"); - return -EMSGSIZE; + /* first nuke then test link, e.g. previous status has not sent */ + if (!list_empty(&hwreq->queue)) { + dev_err(hwep->ci->dev, "request already in queue\n"); + return -EBUSY; } /* push request */ - mReq->req.status = -EINPROGRESS; - mReq->req.actual = 0; + hwreq->req.status = -EINPROGRESS; + hwreq->req.actual = 0; - retval = _hardware_enqueue(mEp, mReq); + retval = _hardware_enqueue(hwep, hwreq); if (retval == -EALREADY) retval = 0; if (!retval) - list_add_tail(&mReq->queue, &mEp->qh.queue); + list_add_tail(&hwreq->queue, &hwep->qh.queue); return retval; } @@ -710,22 +814,22 @@ static int _ep_queue(struct usb_ep *ep, struct usb_request *req, * * This function returns an error code */ -static int isr_get_status_response(struct ci13xxx *ci, +static int isr_get_status_response(struct ci_hdrc *ci, struct usb_ctrlrequest *setup) -__releases(mEp->lock) -__acquires(mEp->lock) +__releases(hwep->lock) +__acquires(hwep->lock) { - struct ci13xxx_ep *mEp = ci->ep0in; + struct ci_hw_ep *hwep = ci->ep0in; struct usb_request *req = NULL; gfp_t gfp_flags = GFP_ATOMIC; int dir, num, retval; - if (mEp == NULL || setup == NULL) + if (hwep == NULL || setup == NULL) return -EINVAL; - spin_unlock(mEp->lock); - req = usb_ep_alloc_request(&mEp->ep, gfp_flags); - spin_lock(mEp->lock); + spin_unlock(hwep->lock); + req = usb_ep_alloc_request(&hwep->ep, gfp_flags); + spin_lock(hwep->lock); if (req == NULL) return -ENOMEM; @@ -750,7 +854,7 @@ __acquires(mEp->lock) } /* else do nothing; reserved for future use */ - retval = _ep_queue(&mEp->ep, req, gfp_flags); + retval = _ep_queue(&hwep->ep, req, gfp_flags); if (retval) goto err_free_buf; @@ -759,9 +863,9 @@ __acquires(mEp->lock) err_free_buf: kfree(req->buf); err_free_req: - spin_unlock(mEp->lock); - usb_ep_free_request(&mEp->ep, req); - spin_lock(mEp->lock); + spin_unlock(hwep->lock); + usb_ep_free_request(&hwep->ep, req); + spin_lock(hwep->lock); return retval; } @@ -776,7 +880,7 @@ __acquires(mEp->lock) static void isr_setup_status_complete(struct usb_ep *ep, struct usb_request *req) { - struct ci13xxx *ci = req->context; + struct ci_hdrc *ci = req->context; unsigned long flags; if (ci->setaddr) { @@ -796,48 +900,48 @@ isr_setup_status_complete(struct usb_ep *ep, struct usb_request *req) * * This function returns an error code */ -static int isr_setup_status_phase(struct ci13xxx *ci) +static int isr_setup_status_phase(struct ci_hdrc *ci) { int retval; - struct ci13xxx_ep *mEp; + struct ci_hw_ep *hwep; - mEp = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in; + hwep = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in; ci->status->context = ci; ci->status->complete = isr_setup_status_complete; - retval = _ep_queue(&mEp->ep, ci->status, GFP_ATOMIC); + retval = _ep_queue(&hwep->ep, ci->status, GFP_ATOMIC); return retval; } /** * isr_tr_complete_low: transaction complete low level handler - * @mEp: endpoint + * @hwep: endpoint * * This function returns an error code * Caller must hold lock */ -static int isr_tr_complete_low(struct ci13xxx_ep *mEp) -__releases(mEp->lock) -__acquires(mEp->lock) +static int isr_tr_complete_low(struct ci_hw_ep *hwep) +__releases(hwep->lock) +__acquires(hwep->lock) { - struct ci13xxx_req *mReq, *mReqTemp; - struct ci13xxx_ep *mEpTemp = mEp; + struct ci_hw_req *hwreq, *hwreqtemp; + struct ci_hw_ep *hweptemp = hwep; int retval = 0; - list_for_each_entry_safe(mReq, mReqTemp, &mEp->qh.queue, + list_for_each_entry_safe(hwreq, hwreqtemp, &hwep->qh.queue, queue) { - retval = _hardware_dequeue(mEp, mReq); + retval = _hardware_dequeue(hwep, hwreq); if (retval < 0) break; - list_del_init(&mReq->queue); - if (mReq->req.complete != NULL) { - spin_unlock(mEp->lock); - if ((mEp->type == USB_ENDPOINT_XFER_CONTROL) && - mReq->req.length) - mEpTemp = mEp->ci->ep0in; - mReq->req.complete(&mEpTemp->ep, &mReq->req); - spin_lock(mEp->lock); + list_del_init(&hwreq->queue); + if (hwreq->req.complete != NULL) { + spin_unlock(hwep->lock); + if ((hwep->type == USB_ENDPOINT_XFER_CONTROL) && + hwreq->req.length) + hweptemp = hwep->ci->ep0in; + hwreq->req.complete(&hweptemp->ep, &hwreq->req); + spin_lock(hwep->lock); } } @@ -853,7 +957,7 @@ __acquires(mEp->lock) * * This function handles traffic events */ -static void isr_tr_complete_handler(struct ci13xxx *ci) +static void isr_tr_complete_handler(struct ci_hdrc *ci) __releases(ci->lock) __acquires(ci->lock) { @@ -861,21 +965,21 @@ __acquires(ci->lock) u8 tmode = 0; for (i = 0; i < ci->hw_ep_max; i++) { - struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[i]; + struct ci_hw_ep *hwep = &ci->ci_hw_ep[i]; int type, num, dir, err = -EINVAL; struct usb_ctrlrequest req; - if (mEp->ep.desc == NULL) + if (hwep->ep.desc == NULL) continue; /* not configured */ if (hw_test_and_clear_complete(ci, i)) { - err = isr_tr_complete_low(mEp); - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) { + err = isr_tr_complete_low(hwep); + if (hwep->type == USB_ENDPOINT_XFER_CONTROL) { if (err > 0) /* needs status phase */ err = isr_setup_status_phase(ci); if (err < 0) { spin_unlock(&ci->lock); - if (usb_ep_set_halt(&mEp->ep)) + if (usb_ep_set_halt(&hwep->ep)) dev_err(ci->dev, "error: ep_set_halt\n"); spin_lock(&ci->lock); @@ -883,7 +987,7 @@ __acquires(ci->lock) } } - if (mEp->type != USB_ENDPOINT_XFER_CONTROL || + if (hwep->type != USB_ENDPOINT_XFER_CONTROL || !hw_test_and_clear_setup_status(ci, i)) continue; @@ -902,7 +1006,7 @@ __acquires(ci->lock) /* read_setup_packet */ do { hw_test_and_set_setup_guard(ci); - memcpy(&req, &mEp->qh.ptr->setup, sizeof(req)); + memcpy(&req, &hwep->qh.ptr->setup, sizeof(req)); } while (!hw_test_and_clear_setup_guard(ci)); type = req.bRequestType; @@ -921,10 +1025,10 @@ __acquires(ci->lock) num &= USB_ENDPOINT_NUMBER_MASK; if (dir) /* TX */ num += ci->hw_ep_max/2; - if (!ci->ci13xxx_ep[num].wedge) { + if (!ci->ci_hw_ep[num].wedge) { spin_unlock(&ci->lock); err = usb_ep_clear_halt( - &ci->ci13xxx_ep[num].ep); + &ci->ci_hw_ep[num].ep); spin_lock(&ci->lock); if (err) break; @@ -974,7 +1078,7 @@ __acquires(ci->lock) num += ci->hw_ep_max/2; spin_unlock(&ci->lock); - err = usb_ep_set_halt(&ci->ci13xxx_ep[num].ep); + err = usb_ep_set_halt(&ci->ci_hw_ep[num].ep); spin_lock(&ci->lock); if (!err) isr_setup_status_phase(ci); @@ -1021,7 +1125,7 @@ delegate: if (err < 0) { spin_unlock(&ci->lock); - if (usb_ep_set_halt(&mEp->ep)) + if (usb_ep_set_halt(&hwep->ep)) dev_err(ci->dev, "error: ep_set_halt\n"); spin_lock(&ci->lock); } @@ -1039,7 +1143,7 @@ delegate: static int ep_enable(struct usb_ep *ep, const struct usb_endpoint_descriptor *desc) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); + struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep); int retval = 0; unsigned long flags; u32 cap = 0; @@ -1047,39 +1151,41 @@ static int ep_enable(struct usb_ep *ep, if (ep == NULL || desc == NULL) return -EINVAL; - spin_lock_irqsave(mEp->lock, flags); + spin_lock_irqsave(hwep->lock, flags); /* only internal SW should enable ctrl endpts */ - mEp->ep.desc = desc; + hwep->ep.desc = desc; - if (!list_empty(&mEp->qh.queue)) - dev_warn(mEp->ci->dev, "enabling a non-empty endpoint!\n"); + if (!list_empty(&hwep->qh.queue)) + dev_warn(hwep->ci->dev, "enabling a non-empty endpoint!\n"); - mEp->dir = usb_endpoint_dir_in(desc) ? TX : RX; - mEp->num = usb_endpoint_num(desc); - mEp->type = usb_endpoint_type(desc); + hwep->dir = usb_endpoint_dir_in(desc) ? TX : RX; + hwep->num = usb_endpoint_num(desc); + hwep->type = usb_endpoint_type(desc); - mEp->ep.maxpacket = usb_endpoint_maxp(desc); + hwep->ep.maxpacket = usb_endpoint_maxp(desc) & 0x07ff; + hwep->ep.mult = QH_ISO_MULT(usb_endpoint_maxp(desc)); - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) + if (hwep->type == USB_ENDPOINT_XFER_CONTROL) cap |= QH_IOS; - if (mEp->num) + if (hwep->num) cap |= QH_ZLT; - cap |= (mEp->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT; + cap |= (hwep->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT; - mEp->qh.ptr->cap = cpu_to_le32(cap); + hwep->qh.ptr->cap = cpu_to_le32(cap); - mEp->qh.ptr->td.next |= cpu_to_le32(TD_TERMINATE); /* needed? */ + hwep->qh.ptr->td.next |= cpu_to_le32(TD_TERMINATE); /* needed? */ /* * Enable endpoints in the HW other than ep0 as ep0 * is always enabled */ - if (mEp->num) - retval |= hw_ep_enable(mEp->ci, mEp->num, mEp->dir, mEp->type); + if (hwep->num) + retval |= hw_ep_enable(hwep->ci, hwep->num, hwep->dir, + hwep->type); - spin_unlock_irqrestore(mEp->lock, flags); + spin_unlock_irqrestore(hwep->lock, flags); return retval; } @@ -1090,32 +1196,32 @@ static int ep_enable(struct usb_ep *ep, */ static int ep_disable(struct usb_ep *ep) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); + struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep); int direction, retval = 0; unsigned long flags; if (ep == NULL) return -EINVAL; - else if (mEp->ep.desc == NULL) + else if (hwep->ep.desc == NULL) return -EBUSY; - spin_lock_irqsave(mEp->lock, flags); + spin_lock_irqsave(hwep->lock, flags); /* only internal SW should disable ctrl endpts */ - direction = mEp->dir; + direction = hwep->dir; do { - retval |= _ep_nuke(mEp); - retval |= hw_ep_disable(mEp->ci, mEp->num, mEp->dir); + retval |= _ep_nuke(hwep); + retval |= hw_ep_disable(hwep->ci, hwep->num, hwep->dir); - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) - mEp->dir = (mEp->dir == TX) ? RX : TX; + if (hwep->type == USB_ENDPOINT_XFER_CONTROL) + hwep->dir = (hwep->dir == TX) ? RX : TX; - } while (mEp->dir != direction); + } while (hwep->dir != direction); - mEp->ep.desc = NULL; + hwep->ep.desc = NULL; - spin_unlock_irqrestore(mEp->lock, flags); + spin_unlock_irqrestore(hwep->lock, flags); return retval; } @@ -1126,25 +1232,18 @@ static int ep_disable(struct usb_ep *ep) */ static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - struct ci13xxx_req *mReq = NULL; + struct ci_hw_req *hwreq = NULL; if (ep == NULL) return NULL; - mReq = kzalloc(sizeof(struct ci13xxx_req), gfp_flags); - if (mReq != NULL) { - INIT_LIST_HEAD(&mReq->queue); - - mReq->ptr = dma_pool_alloc(mEp->td_pool, gfp_flags, - &mReq->dma); - if (mReq->ptr == NULL) { - kfree(mReq); - mReq = NULL; - } + hwreq = kzalloc(sizeof(struct ci_hw_req), gfp_flags); + if (hwreq != NULL) { + INIT_LIST_HEAD(&hwreq->queue); + INIT_LIST_HEAD(&hwreq->tds); } - return (mReq == NULL) ? NULL : &mReq->req; + return (hwreq == NULL) ? NULL : &hwreq->req; } /** @@ -1154,24 +1253,30 @@ static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) */ static void ep_free_request(struct usb_ep *ep, struct usb_request *req) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req); + struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep); + struct ci_hw_req *hwreq = container_of(req, struct ci_hw_req, req); + struct td_node *node, *tmpnode; unsigned long flags; if (ep == NULL || req == NULL) { return; - } else if (!list_empty(&mReq->queue)) { - dev_err(mEp->ci->dev, "freeing queued request\n"); + } else if (!list_empty(&hwreq->queue)) { + dev_err(hwep->ci->dev, "freeing queued request\n"); return; } - spin_lock_irqsave(mEp->lock, flags); + spin_lock_irqsave(hwep->lock, flags); + + list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) { + dma_pool_free(hwep->td_pool, node->ptr, node->dma); + list_del_init(&node->td); + node->ptr = NULL; + kfree(node); + } - if (mReq->ptr) - dma_pool_free(mEp->td_pool, mReq->ptr, mReq->dma); - kfree(mReq); + kfree(hwreq); - spin_unlock_irqrestore(mEp->lock, flags); + spin_unlock_irqrestore(hwep->lock, flags); } /** @@ -1182,16 +1287,16 @@ static void ep_free_request(struct usb_ep *ep, struct usb_request *req) static int ep_queue(struct usb_ep *ep, struct usb_request *req, gfp_t __maybe_unused gfp_flags) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); + struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep); int retval = 0; unsigned long flags; - if (ep == NULL || req == NULL || mEp->ep.desc == NULL) + if (ep == NULL || req == NULL || hwep->ep.desc == NULL) return -EINVAL; - spin_lock_irqsave(mEp->lock, flags); + spin_lock_irqsave(hwep->lock, flags); retval = _ep_queue(ep, req, gfp_flags); - spin_unlock_irqrestore(mEp->lock, flags); + spin_unlock_irqrestore(hwep->lock, flags); return retval; } @@ -1202,33 +1307,33 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req, */ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req); + struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep); + struct ci_hw_req *hwreq = container_of(req, struct ci_hw_req, req); unsigned long flags; - if (ep == NULL || req == NULL || mReq->req.status != -EALREADY || - mEp->ep.desc == NULL || list_empty(&mReq->queue) || - list_empty(&mEp->qh.queue)) + if (ep == NULL || req == NULL || hwreq->req.status != -EALREADY || + hwep->ep.desc == NULL || list_empty(&hwreq->queue) || + list_empty(&hwep->qh.queue)) return -EINVAL; - spin_lock_irqsave(mEp->lock, flags); + spin_lock_irqsave(hwep->lock, flags); - hw_ep_flush(mEp->ci, mEp->num, mEp->dir); + hw_ep_flush(hwep->ci, hwep->num, hwep->dir); /* pop request */ - list_del_init(&mReq->queue); + list_del_init(&hwreq->queue); - usb_gadget_unmap_request(&mEp->ci->gadget, req, mEp->dir); + usb_gadget_unmap_request(&hwep->ci->gadget, req, hwep->dir); req->status = -ECONNRESET; - if (mReq->req.complete != NULL) { - spin_unlock(mEp->lock); - mReq->req.complete(&mEp->ep, &mReq->req); - spin_lock(mEp->lock); + if (hwreq->req.complete != NULL) { + spin_unlock(hwep->lock); + hwreq->req.complete(&hwep->ep, &hwreq->req); + spin_lock(hwep->lock); } - spin_unlock_irqrestore(mEp->lock, flags); + spin_unlock_irqrestore(hwep->lock, flags); return 0; } @@ -1239,37 +1344,40 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req) */ static int ep_set_halt(struct usb_ep *ep, int value) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); + struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep); int direction, retval = 0; unsigned long flags; - if (ep == NULL || mEp->ep.desc == NULL) + if (ep == NULL || hwep->ep.desc == NULL) return -EINVAL; - spin_lock_irqsave(mEp->lock, flags); + if (usb_endpoint_xfer_isoc(hwep->ep.desc)) + return -EOPNOTSUPP; + + spin_lock_irqsave(hwep->lock, flags); #ifndef STALL_IN /* g_file_storage MS compliant but g_zero fails chapter 9 compliance */ - if (value && mEp->type == USB_ENDPOINT_XFER_BULK && mEp->dir == TX && - !list_empty(&mEp->qh.queue)) { - spin_unlock_irqrestore(mEp->lock, flags); + if (value && hwep->type == USB_ENDPOINT_XFER_BULK && hwep->dir == TX && + !list_empty(&hwep->qh.queue)) { + spin_unlock_irqrestore(hwep->lock, flags); return -EAGAIN; } #endif - direction = mEp->dir; + direction = hwep->dir; do { - retval |= hw_ep_set_halt(mEp->ci, mEp->num, mEp->dir, value); + retval |= hw_ep_set_halt(hwep->ci, hwep->num, hwep->dir, value); if (!value) - mEp->wedge = 0; + hwep->wedge = 0; - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) - mEp->dir = (mEp->dir == TX) ? RX : TX; + if (hwep->type == USB_ENDPOINT_XFER_CONTROL) + hwep->dir = (hwep->dir == TX) ? RX : TX; - } while (mEp->dir != direction); + } while (hwep->dir != direction); - spin_unlock_irqrestore(mEp->lock, flags); + spin_unlock_irqrestore(hwep->lock, flags); return retval; } @@ -1280,15 +1388,15 @@ static int ep_set_halt(struct usb_ep *ep, int value) */ static int ep_set_wedge(struct usb_ep *ep) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); + struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep); unsigned long flags; - if (ep == NULL || mEp->ep.desc == NULL) + if (ep == NULL || hwep->ep.desc == NULL) return -EINVAL; - spin_lock_irqsave(mEp->lock, flags); - mEp->wedge = 1; - spin_unlock_irqrestore(mEp->lock, flags); + spin_lock_irqsave(hwep->lock, flags); + hwep->wedge = 1; + spin_unlock_irqrestore(hwep->lock, flags); return usb_ep_set_halt(ep); } @@ -1300,19 +1408,19 @@ static int ep_set_wedge(struct usb_ep *ep) */ static void ep_fifo_flush(struct usb_ep *ep) { - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); + struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep); unsigned long flags; if (ep == NULL) { - dev_err(mEp->ci->dev, "%02X: -EINVAL\n", _usb_addr(mEp)); + dev_err(hwep->ci->dev, "%02X: -EINVAL\n", _usb_addr(hwep)); return; } - spin_lock_irqsave(mEp->lock, flags); + spin_lock_irqsave(hwep->lock, flags); - hw_ep_flush(mEp->ci, mEp->num, mEp->dir); + hw_ep_flush(hwep->ci, hwep->num, hwep->dir); - spin_unlock_irqrestore(mEp->lock, flags); + spin_unlock_irqrestore(hwep->lock, flags); } /** @@ -1334,15 +1442,12 @@ static const struct usb_ep_ops usb_ep_ops = { /****************************************************************************** * GADGET block *****************************************************************************/ -static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active) +static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active) { - struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget); + struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget); unsigned long flags; int gadget_ready = 0; - if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS)) - return -EOPNOTSUPP; - spin_lock_irqsave(&ci->lock, flags); ci->vbus_active = is_active; if (ci->driver) @@ -1354,22 +1459,24 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active) pm_runtime_get_sync(&_gadget->dev); hw_device_reset(ci, USBMODE_CM_DC); hw_device_state(ci, ci->ep0out->qh.dma); + dev_dbg(ci->dev, "Connected to host\n"); } else { hw_device_state(ci, 0); if (ci->platdata->notify_event) ci->platdata->notify_event(ci, - CI13XXX_CONTROLLER_STOPPED_EVENT); + CI_HDRC_CONTROLLER_STOPPED_EVENT); _gadget_stop_activity(&ci->gadget); pm_runtime_put_sync(&_gadget->dev); + dev_dbg(ci->dev, "Disconnected from host\n"); } } return 0; } -static int ci13xxx_wakeup(struct usb_gadget *_gadget) +static int ci_udc_wakeup(struct usb_gadget *_gadget) { - struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget); + struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget); unsigned long flags; int ret = 0; @@ -1388,21 +1495,24 @@ out: return ret; } -static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA) +static int ci_udc_vbus_draw(struct usb_gadget *_gadget, unsigned ma) { - struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget); + struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget); if (ci->transceiver) - return usb_phy_set_power(ci->transceiver, mA); + return usb_phy_set_power(ci->transceiver, ma); return -ENOTSUPP; } /* Change Data+ pullup status * this func is used by usb_gadget_connect/disconnet */ -static int ci13xxx_pullup(struct usb_gadget *_gadget, int is_on) +static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on) { - struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget); + struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget); + + if (!ci->vbus_active) + return -EOPNOTSUPP; if (is_on) hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS); @@ -1412,9 +1522,9 @@ static int ci13xxx_pullup(struct usb_gadget *_gadget, int is_on) return 0; } -static int ci13xxx_start(struct usb_gadget *gadget, +static int ci_udc_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver); -static int ci13xxx_stop(struct usb_gadget *gadget, +static int ci_udc_stop(struct usb_gadget *gadget, struct usb_gadget_driver *driver); /** * Device operations part of the API to the USB controller hardware, @@ -1422,46 +1532,46 @@ static int ci13xxx_stop(struct usb_gadget *gadget, * Check "usb_gadget.h" for details */ static const struct usb_gadget_ops usb_gadget_ops = { - .vbus_session = ci13xxx_vbus_session, - .wakeup = ci13xxx_wakeup, - .pullup = ci13xxx_pullup, - .vbus_draw = ci13xxx_vbus_draw, - .udc_start = ci13xxx_start, - .udc_stop = ci13xxx_stop, + .vbus_session = ci_udc_vbus_session, + .wakeup = ci_udc_wakeup, + .pullup = ci_udc_pullup, + .vbus_draw = ci_udc_vbus_draw, + .udc_start = ci_udc_start, + .udc_stop = ci_udc_stop, }; -static int init_eps(struct ci13xxx *ci) +static int init_eps(struct ci_hdrc *ci) { int retval = 0, i, j; for (i = 0; i < ci->hw_ep_max/2; i++) for (j = RX; j <= TX; j++) { int k = i + j * ci->hw_ep_max/2; - struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[k]; + struct ci_hw_ep *hwep = &ci->ci_hw_ep[k]; - scnprintf(mEp->name, sizeof(mEp->name), "ep%i%s", i, + scnprintf(hwep->name, sizeof(hwep->name), "ep%i%s", i, (j == TX) ? "in" : "out"); - mEp->ci = ci; - mEp->lock = &ci->lock; - mEp->td_pool = ci->td_pool; + hwep->ci = ci; + hwep->lock = &ci->lock; + hwep->td_pool = ci->td_pool; - mEp->ep.name = mEp->name; - mEp->ep.ops = &usb_ep_ops; + hwep->ep.name = hwep->name; + hwep->ep.ops = &usb_ep_ops; /* * for ep0: maxP defined in desc, for other * eps, maxP is set by epautoconfig() called * by gadget layer */ - mEp->ep.maxpacket = (unsigned short)~0; + hwep->ep.maxpacket = (unsigned short)~0; - INIT_LIST_HEAD(&mEp->qh.queue); - mEp->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL, - &mEp->qh.dma); - if (mEp->qh.ptr == NULL) + INIT_LIST_HEAD(&hwep->qh.queue); + hwep->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL, + &hwep->qh.dma); + if (hwep->qh.ptr == NULL) retval = -ENOMEM; else - memset(mEp->qh.ptr, 0, sizeof(*mEp->qh.ptr)); + memset(hwep->qh.ptr, 0, sizeof(*hwep->qh.ptr)); /* * set up shorthands for ep0 out and in endpoints, @@ -1469,42 +1579,42 @@ static int init_eps(struct ci13xxx *ci) */ if (i == 0) { if (j == RX) - ci->ep0out = mEp; + ci->ep0out = hwep; else - ci->ep0in = mEp; + ci->ep0in = hwep; - mEp->ep.maxpacket = CTRL_PAYLOAD_MAX; + hwep->ep.maxpacket = CTRL_PAYLOAD_MAX; continue; } - list_add_tail(&mEp->ep.ep_list, &ci->gadget.ep_list); + list_add_tail(&hwep->ep.ep_list, &ci->gadget.ep_list); } return retval; } -static void destroy_eps(struct ci13xxx *ci) +static void destroy_eps(struct ci_hdrc *ci) { int i; for (i = 0; i < ci->hw_ep_max; i++) { - struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[i]; + struct ci_hw_ep *hwep = &ci->ci_hw_ep[i]; - dma_pool_free(ci->qh_pool, mEp->qh.ptr, mEp->qh.dma); + dma_pool_free(ci->qh_pool, hwep->qh.ptr, hwep->qh.dma); } } /** - * ci13xxx_start: register a gadget driver + * ci_udc_start: register a gadget driver * @gadget: our gadget * @driver: the driver being registered * * Interrupts are enabled here. */ -static int ci13xxx_start(struct usb_gadget *gadget, +static int ci_udc_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { - struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget); + struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget); unsigned long flags; int retval = -ENOMEM; @@ -1525,14 +1635,11 @@ static int ci13xxx_start(struct usb_gadget *gadget, ci->driver = driver; pm_runtime_get_sync(&ci->gadget.dev); - if (ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) { - if (ci->vbus_active) { - if (ci->platdata->flags & CI13XXX_REGS_SHARED) - hw_device_reset(ci, USBMODE_CM_DC); - } else { - pm_runtime_put_sync(&ci->gadget.dev); - goto done; - } + if (ci->vbus_active) { + hw_device_reset(ci, USBMODE_CM_DC); + } else { + pm_runtime_put_sync(&ci->gadget.dev); + goto done; } retval = hw_device_state(ci, ci->ep0out->qh.dma); @@ -1545,22 +1652,21 @@ static int ci13xxx_start(struct usb_gadget *gadget, } /** - * ci13xxx_stop: unregister a gadget driver + * ci_udc_stop: unregister a gadget driver */ -static int ci13xxx_stop(struct usb_gadget *gadget, +static int ci_udc_stop(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { - struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget); + struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget); unsigned long flags; spin_lock_irqsave(&ci->lock, flags); - if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) || - ci->vbus_active) { + if (ci->vbus_active) { hw_device_state(ci, 0); if (ci->platdata->notify_event) ci->platdata->notify_event(ci, - CI13XXX_CONTROLLER_STOPPED_EVENT); + CI_HDRC_CONTROLLER_STOPPED_EVENT); ci->driver = NULL; spin_unlock_irqrestore(&ci->lock, flags); _gadget_stop_activity(&ci->gadget); @@ -1582,7 +1688,7 @@ static int ci13xxx_stop(struct usb_gadget *gadget, * This function returns IRQ_HANDLED if the IRQ has been handled * It locks access to registers */ -static irqreturn_t udc_irq(struct ci13xxx *ci) +static irqreturn_t udc_irq(struct ci_hdrc *ci) { irqreturn_t retval; u32 intr; @@ -1592,7 +1698,7 @@ static irqreturn_t udc_irq(struct ci13xxx *ci) spin_lock(&ci->lock); - if (ci->platdata->flags & CI13XXX_REGS_SHARED) { + if (ci->platdata->flags & CI_HDRC_REGS_SHARED) { if (hw_read(ci, OP_USBMODE, USBMODE_CM) != USBMODE_CM_DC) { spin_unlock(&ci->lock); @@ -1642,7 +1748,7 @@ static irqreturn_t udc_irq(struct ci13xxx *ci) * udc_start: initialize gadget role * @ci: chipidea controller */ -static int udc_start(struct ci13xxx *ci) +static int udc_start(struct ci_hdrc *ci) { struct device *dev = ci->dev; int retval = 0; @@ -1658,15 +1764,15 @@ static int udc_start(struct ci13xxx *ci) INIT_LIST_HEAD(&ci->gadget.ep_list); /* alloc resources */ - ci->qh_pool = dma_pool_create("ci13xxx_qh", dev, - sizeof(struct ci13xxx_qh), - 64, CI13XXX_PAGE_SIZE); + ci->qh_pool = dma_pool_create("ci_hw_qh", dev, + sizeof(struct ci_hw_qh), + 64, CI_HDRC_PAGE_SIZE); if (ci->qh_pool == NULL) return -ENOMEM; - ci->td_pool = dma_pool_create("ci13xxx_td", dev, - sizeof(struct ci13xxx_td), - 64, CI13XXX_PAGE_SIZE); + ci->td_pool = dma_pool_create("ci_hw_td", dev, + sizeof(struct ci_hw_td), + 64, CI_HDRC_PAGE_SIZE); if (ci->td_pool == NULL) { retval = -ENOMEM; goto free_qh_pool; @@ -1678,26 +1784,28 @@ static int udc_start(struct ci13xxx *ci) ci->gadget.ep0 = &ci->ep0in->ep; - if (ci->global_phy) + if (ci->global_phy) { ci->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR(ci->transceiver)) + ci->transceiver = NULL; + } - if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) { + if (ci->platdata->flags & CI_HDRC_REQUIRE_TRANSCEIVER) { if (ci->transceiver == NULL) { retval = -ENODEV; goto destroy_eps; } } - if (!(ci->platdata->flags & CI13XXX_REGS_SHARED)) { - retval = hw_device_reset(ci, USBMODE_CM_DC); - if (retval) - goto put_transceiver; - } - - if (!IS_ERR_OR_NULL(ci->transceiver)) { + if (ci->transceiver) { retval = otg_set_peripheral(ci->transceiver->otg, &ci->gadget); - if (retval) + /* + * If we implement all USB functions using chipidea drivers, + * it doesn't need to call above API, meanwhile, if we only + * use gadget function, calling above API is useless. + */ + if (retval && retval != -ENOTSUPP) goto put_transceiver; } @@ -1708,10 +1816,13 @@ static int udc_start(struct ci13xxx *ci) pm_runtime_no_callbacks(&ci->gadget.dev); pm_runtime_enable(&ci->gadget.dev); + /* Update ci->vbus_active */ + ci_handle_vbus_change(ci); + return retval; remove_trans: - if (!IS_ERR_OR_NULL(ci->transceiver)) { + if (ci->transceiver) { otg_set_peripheral(ci->transceiver->otg, NULL); if (ci->global_phy) usb_put_phy(ci->transceiver); @@ -1719,7 +1830,7 @@ remove_trans: dev_err(dev, "error = %i\n", retval); put_transceiver: - if (!IS_ERR_OR_NULL(ci->transceiver) && ci->global_phy) + if (ci->transceiver && ci->global_phy) usb_put_phy(ci->transceiver); destroy_eps: destroy_eps(ci); @@ -1731,13 +1842,13 @@ free_qh_pool: } /** - * udc_remove: parent remove must call this to remove UDC + * ci_hdrc_gadget_destroy: parent remove must call this to remove UDC * * No interrupts active, the IRQ has been released */ -static void udc_stop(struct ci13xxx *ci) +void ci_hdrc_gadget_destroy(struct ci_hdrc *ci) { - if (ci == NULL) + if (!ci->roles[CI_ROLE_GADGET]) return; usb_del_gadget_udc(&ci->gadget); @@ -1747,22 +1858,39 @@ static void udc_stop(struct ci13xxx *ci) dma_pool_destroy(ci->td_pool); dma_pool_destroy(ci->qh_pool); - if (!IS_ERR_OR_NULL(ci->transceiver)) { + if (ci->transceiver) { otg_set_peripheral(ci->transceiver->otg, NULL); if (ci->global_phy) usb_put_phy(ci->transceiver); } - /* my kobject is dynamic, I swear! */ - memset(&ci->gadget, 0, sizeof(ci->gadget)); +} + +static int udc_id_switch_for_device(struct ci_hdrc *ci) +{ + if (ci->is_otg) { + ci_clear_otg_interrupt(ci, OTGSC_BSVIS); + ci_enable_otg_interrupt(ci, OTGSC_BSVIE); + } + + return 0; +} + +static void udc_id_switch_for_host(struct ci_hdrc *ci) +{ + if (ci->is_otg) { + /* host doesn't care B_SESSION_VALID event */ + ci_clear_otg_interrupt(ci, OTGSC_BSVIS); + ci_disable_otg_interrupt(ci, OTGSC_BSVIE); + } } /** * ci_hdrc_gadget_init - initialize device related bits * ci: the controller * - * This function enables the gadget role, if the device is "device capable". + * This function initializes the gadget, if the device is "device capable". */ -int ci_hdrc_gadget_init(struct ci13xxx *ci) +int ci_hdrc_gadget_init(struct ci_hdrc *ci) { struct ci_role_driver *rdrv; @@ -1773,11 +1901,11 @@ int ci_hdrc_gadget_init(struct ci13xxx *ci) if (!rdrv) return -ENOMEM; - rdrv->start = udc_start; - rdrv->stop = udc_stop; + rdrv->start = udc_id_switch_for_device; + rdrv->stop = udc_id_switch_for_host; rdrv->irq = udc_irq; rdrv->name = "gadget"; ci->roles[CI_ROLE_GADGET] = rdrv; - return 0; + return udc_start(ci); } diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h index d12e8b59b110..e66df0020bd4 100644 --- a/drivers/usb/chipidea/udc.h +++ b/drivers/usb/chipidea/udc.h @@ -20,7 +20,7 @@ #define TX 1 /* similar to USB_DIR_IN but can be used as an index */ /* DMA layout of transfer descriptors */ -struct ci13xxx_td { +struct ci_hw_td { /* 0 */ u32 next; #define TD_TERMINATE BIT(0) @@ -43,24 +43,31 @@ struct ci13xxx_td { } __attribute__ ((packed, aligned(4))); /* DMA layout of queue heads */ -struct ci13xxx_qh { +struct ci_hw_qh { /* 0 */ u32 cap; #define QH_IOS BIT(15) #define QH_MAX_PKT (0x07FFUL << 16) #define QH_ZLT BIT(29) #define QH_MULT (0x0003UL << 30) +#define QH_ISO_MULT(x) ((x >> 11) & 0x03) /* 1 */ u32 curr; /* 2 - 8 */ - struct ci13xxx_td td; + struct ci_hw_td td; /* 9 */ u32 RESERVED; struct usb_ctrlrequest setup; } __attribute__ ((packed, aligned(4))); +struct td_node { + struct list_head td; + dma_addr_t dma; + struct ci_hw_td *ptr; +}; + /** - * struct ci13xxx_req - usb request representation + * struct ci_hw_req - usb request representation * @req: request structure for gadget drivers * @queue: link to QH list * @ptr: transfer descriptor for this request @@ -68,26 +75,29 @@ struct ci13xxx_qh { * @zptr: transfer descriptor for the zero packet * @zdma: dma address of the zero packet's transfer descriptor */ -struct ci13xxx_req { +struct ci_hw_req { struct usb_request req; struct list_head queue; - struct ci13xxx_td *ptr; - dma_addr_t dma; - struct ci13xxx_td *zptr; - dma_addr_t zdma; + struct list_head tds; }; #ifdef CONFIG_USB_CHIPIDEA_UDC -int ci_hdrc_gadget_init(struct ci13xxx *ci); +int ci_hdrc_gadget_init(struct ci_hdrc *ci); +void ci_hdrc_gadget_destroy(struct ci_hdrc *ci); #else -static inline int ci_hdrc_gadget_init(struct ci13xxx *ci) +static inline int ci_hdrc_gadget_init(struct ci_hdrc *ci) { return -ENXIO; } +static inline void ci_hdrc_gadget_destroy(struct ci_hdrc *ci) +{ + +} + #endif #endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */ diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 714a6bd810ed..8a1094b1182f 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -16,9 +16,7 @@ #include <linux/io.h> #include <linux/delay.h> -#include "ci13xxx_imx.h" - -#define USB_DEV_MAX 4 +#include "ci_hdrc_imx.h" #define MX25_USB_PHY_CTRL_OFFSET 0x08 #define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23) @@ -32,51 +30,34 @@ #define MX6_BM_OVER_CUR_DIS BIT(7) +struct usbmisc_ops { + /* It's called once when probe a usb device */ + int (*init)(struct imx_usbmisc_data *data); + /* It's called once after adding a usb device */ + int (*post)(struct imx_usbmisc_data *data); +}; + struct imx_usbmisc { void __iomem *base; spinlock_t lock; struct clk *clk; - struct usbmisc_usb_device usbdev[USB_DEV_MAX]; const struct usbmisc_ops *ops; }; static struct imx_usbmisc *usbmisc; -static struct usbmisc_usb_device *get_usbdev(struct device *dev) -{ - int i, ret; - - for (i = 0; i < USB_DEV_MAX; i++) { - if (usbmisc->usbdev[i].dev == dev) - return &usbmisc->usbdev[i]; - else if (!usbmisc->usbdev[i].dev) - break; - } - - if (i >= USB_DEV_MAX) - return ERR_PTR(-EBUSY); - - ret = usbmisc_get_init_data(dev, &usbmisc->usbdev[i]); - if (ret) - return ERR_PTR(ret); - - return &usbmisc->usbdev[i]; -} - -static int usbmisc_imx25_post(struct device *dev) +static int usbmisc_imx25_post(struct imx_usbmisc_data *data) { - struct usbmisc_usb_device *usbdev; void __iomem *reg; unsigned long flags; u32 val; - usbdev = get_usbdev(dev); - if (IS_ERR(usbdev)) - return PTR_ERR(usbdev); + if (data->index > 2) + return -EINVAL; reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET; - if (usbdev->evdo) { + if (data->evdo) { spin_lock_irqsave(&usbmisc->lock, flags); val = readl(reg); writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg); @@ -87,20 +68,18 @@ static int usbmisc_imx25_post(struct device *dev) return 0; } -static int usbmisc_imx53_init(struct device *dev) +static int usbmisc_imx53_init(struct imx_usbmisc_data *data) { - struct usbmisc_usb_device *usbdev; void __iomem *reg = NULL; unsigned long flags; u32 val = 0; - usbdev = get_usbdev(dev); - if (IS_ERR(usbdev)) - return PTR_ERR(usbdev); + if (data->index > 3) + return -EINVAL; - if (usbdev->disable_oc) { + if (data->disable_oc) { spin_lock_irqsave(&usbmisc->lock, flags); - switch (usbdev->index) { + switch (data->index) { case 0: reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET; val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG; @@ -126,22 +105,19 @@ static int usbmisc_imx53_init(struct device *dev) return 0; } -static int usbmisc_imx6q_init(struct device *dev) +static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) { - - struct usbmisc_usb_device *usbdev; unsigned long flags; u32 reg; - usbdev = get_usbdev(dev); - if (IS_ERR(usbdev)) - return PTR_ERR(usbdev); + if (data->index > 3) + return -EINVAL; - if (usbdev->disable_oc) { + if (data->disable_oc) { spin_lock_irqsave(&usbmisc->lock, flags); - reg = readl(usbmisc->base + usbdev->index * 4); + reg = readl(usbmisc->base + data->index * 4); writel(reg | MX6_BM_OVER_CUR_DIS, - usbmisc->base + usbdev->index * 4); + usbmisc->base + data->index * 4); spin_unlock_irqrestore(&usbmisc->lock, flags); } @@ -160,6 +136,26 @@ static const struct usbmisc_ops imx6q_usbmisc_ops = { .init = usbmisc_imx6q_init, }; +int imx_usbmisc_init(struct imx_usbmisc_data *data) +{ + if (!usbmisc) + return -EPROBE_DEFER; + if (!usbmisc->ops->init) + return 0; + return usbmisc->ops->init(data); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_init); + +int imx_usbmisc_init_post(struct imx_usbmisc_data *data) +{ + if (!usbmisc) + return -EPROBE_DEFER; + if (!usbmisc->ops->post) + return 0; + return usbmisc->ops->post(data); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_init_post); + static const struct of_device_id usbmisc_imx_dt_ids[] = { { .compatible = "fsl,imx25-usbmisc", @@ -175,6 +171,7 @@ static const struct of_device_id usbmisc_imx_dt_ids[] = { }, { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids); static int usbmisc_imx_probe(struct platform_device *pdev) { @@ -215,19 +212,12 @@ static int usbmisc_imx_probe(struct platform_device *pdev) of_match_device(usbmisc_imx_dt_ids, &pdev->dev); data->ops = (const struct usbmisc_ops *)tmp_dev->data; usbmisc = data; - ret = usbmisc_set_ops(data->ops); - if (ret) { - usbmisc = NULL; - clk_disable_unprepare(data->clk); - return ret; - } return 0; } static int usbmisc_imx_remove(struct platform_device *pdev) { - usbmisc_unset_ops(usbmisc->ops); clk_disable_unprepare(usbmisc->clk); usbmisc = NULL; return 0; @@ -243,17 +233,7 @@ static struct platform_driver usbmisc_imx_driver = { }, }; -int usbmisc_imx_drv_init(void) -{ - return platform_driver_register(&usbmisc_imx_driver); -} -subsys_initcall(usbmisc_imx_drv_init); - -void usbmisc_imx_drv_exit(void) -{ - platform_driver_unregister(&usbmisc_imx_driver); -} -module_exit(usbmisc_imx_drv_exit); +module_platform_driver(usbmisc_imx_driver); MODULE_ALIAS("platform:usbmisc-imx"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 9b1cbcf8fb7f..3e7560f004f8 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -216,38 +216,6 @@ static int acm_start_wb(struct acm *acm, struct acm_wb *wb) return rc; } -static int acm_write_start(struct acm *acm, int wbn) -{ - unsigned long flags; - struct acm_wb *wb = &acm->wb[wbn]; - int rc; - - spin_lock_irqsave(&acm->write_lock, flags); - if (!acm->dev) { - wb->use = 0; - spin_unlock_irqrestore(&acm->write_lock, flags); - return -ENODEV; - } - - dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__, - acm->susp_count); - usb_autopm_get_interface_async(acm->control); - if (acm->susp_count) { - if (!acm->delayed_wb) - acm->delayed_wb = wb; - else - usb_autopm_put_interface_async(acm->control); - spin_unlock_irqrestore(&acm->write_lock, flags); - return 0; /* A white lie */ - } - usb_mark_last_busy(acm->dev); - - rc = acm_start_wb(acm, wb); - spin_unlock_irqrestore(&acm->write_lock, flags); - - return rc; - -} /* * attributes exported through sysfs */ @@ -653,13 +621,31 @@ static int acm_tty_write(struct tty_struct *tty, } wb = &acm->wb[wbn]; + if (!acm->dev) { + wb->use = 0; + spin_unlock_irqrestore(&acm->write_lock, flags); + return -ENODEV; + } + count = (count > acm->writesize) ? acm->writesize : count; dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count); memcpy(wb->buf, buf, count); wb->len = count; + + usb_autopm_get_interface_async(acm->control); + if (acm->susp_count) { + if (!acm->delayed_wb) + acm->delayed_wb = wb; + else + usb_autopm_put_interface_async(acm->control); + spin_unlock_irqrestore(&acm->write_lock, flags); + return count; /* A white lie */ + } + usb_mark_last_busy(acm->dev); + + stat = acm_start_wb(acm, wb); spin_unlock_irqrestore(&acm->write_lock, flags); - stat = acm_write_start(acm, wbn); if (stat < 0) return stat; return count; @@ -1309,7 +1295,7 @@ skip_countries: usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, /* works around buggy devices */ - epctrl->bInterval ? epctrl->bInterval : 0xff); + epctrl->bInterval ? epctrl->bInterval : 16); acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; acm->ctrlurb->transfer_dma = acm->ctrl_dma; diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 8a230f0ef77c..d3318a0df8ee 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -209,6 +209,7 @@ skip_error: static void wdm_int_callback(struct urb *urb) { int rv = 0; + int responding; int status = urb->status; struct wdm_device *desc; struct usb_cdc_notification *dr; @@ -262,8 +263,8 @@ static void wdm_int_callback(struct urb *urb) spin_lock(&desc->iuspin); clear_bit(WDM_READ, &desc->flags); - set_bit(WDM_RESPONDING, &desc->flags); - if (!test_bit(WDM_DISCONNECTING, &desc->flags) + responding = test_and_set_bit(WDM_RESPONDING, &desc->flags); + if (!responding && !test_bit(WDM_DISCONNECTING, &desc->flags) && !test_bit(WDM_SUSPENDING, &desc->flags)) { rv = usb_submit_urb(desc->response, GFP_ATOMIC); dev_dbg(&desc->intf->dev, "%s: usb_submit_urb %d", @@ -685,16 +686,20 @@ static void wdm_rxwork(struct work_struct *work) { struct wdm_device *desc = container_of(work, struct wdm_device, rxwork); unsigned long flags; - int rv; + int rv = 0; + int responding; spin_lock_irqsave(&desc->iuspin, flags); if (test_bit(WDM_DISCONNECTING, &desc->flags)) { spin_unlock_irqrestore(&desc->iuspin, flags); } else { + responding = test_and_set_bit(WDM_RESPONDING, &desc->flags); spin_unlock_irqrestore(&desc->iuspin, flags); - rv = usb_submit_urb(desc->response, GFP_KERNEL); + if (!responding) + rv = usb_submit_urb(desc->response, GFP_KERNEL); if (rv < 0 && rv != -EPERM) { spin_lock_irqsave(&desc->iuspin, flags); + clear_bit(WDM_RESPONDING, &desc->flags); if (!test_bit(WDM_DISCONNECTING, &desc->flags)) schedule_work(&desc->rxwork); spin_unlock_irqrestore(&desc->iuspin, flags); diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 4c5506ae5e45..09de131ee0cb 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -19,6 +19,8 @@ * http://www.gnu.org/copyleft/gpl.html. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/init.h> #include <linux/module.h> #include <linux/kernel.h> @@ -31,6 +33,8 @@ #include <linux/usb/tmc.h> +#define RIGOL 1 +#define USBTMC_HEADER_SIZE 12 #define USBTMC_MINOR_BASE 176 /* @@ -84,6 +88,8 @@ struct usbtmc_device_data { u8 bTag_last_write; /* needed for abort */ u8 bTag_last_read; /* needed for abort */ + u8 rigol_quirk; + /* attributes from the USB TMC spec for this device */ u8 TermChar; bool TermCharEnabled; @@ -97,6 +103,16 @@ struct usbtmc_device_data { }; #define to_usbtmc_data(d) container_of(d, struct usbtmc_device_data, kref) +struct usbtmc_ID_rigol_quirk { + __u16 idVendor; + __u16 idProduct; +}; + +static const struct usbtmc_ID_rigol_quirk usbtmc_id_quirk[] = { + { 0x1ab1, 0x0588 }, + { 0, 0 } +}; + /* Forward declarations */ static struct usb_driver usbtmc_driver; @@ -105,7 +121,6 @@ static void usbtmc_delete(struct kref *kref) struct usbtmc_device_data *data = to_usbtmc_data(kref); usb_put_dev(data->usb_dev); - kfree(data); } static int usbtmc_open(struct inode *inode, struct file *filp) @@ -116,10 +131,8 @@ static int usbtmc_open(struct inode *inode, struct file *filp) intf = usb_find_interface(&usbtmc_driver, iminor(inode)); if (!intf) { - printk(KERN_ERR KBUILD_MODNAME - ": can not find device for minor %d", iminor(inode)); - retval = -ENODEV; - goto exit; + pr_err("can not find device for minor %d", iminor(inode)); + return -ENODEV; } data = usb_get_intfdata(intf); @@ -128,7 +141,6 @@ static int usbtmc_open(struct inode *inode, struct file *filp) /* Store pointer in file structure's private data field */ filp->private_data = data; -exit: return retval; } @@ -361,6 +373,59 @@ exit: return rv; } +/* + * Sends a REQUEST_DEV_DEP_MSG_IN message on the Bulk-IN endpoint. + * @transfer_size: number of bytes to request from the device. + * + * See the USBTMC specification, Table 4. + * + * Also updates bTag_last_write. + */ +static int send_request_dev_dep_msg_in(struct usbtmc_device_data *data, size_t transfer_size) +{ + int retval; + u8 buffer[USBTMC_HEADER_SIZE]; + int actual; + + /* Setup IO buffer for REQUEST_DEV_DEP_MSG_IN message + * Refer to class specs for details + */ + buffer[0] = 2; + buffer[1] = data->bTag; + buffer[2] = ~data->bTag; + buffer[3] = 0; /* Reserved */ + buffer[4] = transfer_size >> 0; + buffer[5] = transfer_size >> 8; + buffer[6] = transfer_size >> 16; + buffer[7] = transfer_size >> 24; + buffer[8] = data->TermCharEnabled * 2; + /* Use term character? */ + buffer[9] = data->TermChar; + buffer[10] = 0; /* Reserved */ + buffer[11] = 0; /* Reserved */ + + /* Send bulk URB */ + retval = usb_bulk_msg(data->usb_dev, + usb_sndbulkpipe(data->usb_dev, + data->bulk_out), + buffer, USBTMC_HEADER_SIZE, &actual, USBTMC_TIMEOUT); + + /* Store bTag (in case we need to abort) */ + data->bTag_last_write = data->bTag; + + /* Increment bTag -- and increment again if zero */ + data->bTag++; + if (!data->bTag) + data->bTag++; + + if (retval < 0) { + dev_err(&data->intf->dev, "usb_bulk_msg in send_request_dev_dep_msg_in() returned %d\n", retval); + return retval; + } + + return 0; +} + static ssize_t usbtmc_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos) { @@ -388,51 +453,39 @@ static ssize_t usbtmc_read(struct file *filp, char __user *buf, goto exit; } - remaining = count; - done = 0; + if (data->rigol_quirk) { + dev_dbg(dev, "usb_bulk_msg_in: count(%zu)\n", count); - while (remaining > 0) { - if (remaining > USBTMC_SIZE_IOBUFFER - 12 - 3) - this_part = USBTMC_SIZE_IOBUFFER - 12 - 3; - else - this_part = remaining; + retval = send_request_dev_dep_msg_in(data, count); - /* Setup IO buffer for DEV_DEP_MSG_IN message - * Refer to class specs for details - */ - buffer[0] = 2; - buffer[1] = data->bTag; - buffer[2] = ~(data->bTag); - buffer[3] = 0; /* Reserved */ - buffer[4] = (this_part) & 255; - buffer[5] = ((this_part) >> 8) & 255; - buffer[6] = ((this_part) >> 16) & 255; - buffer[7] = ((this_part) >> 24) & 255; - buffer[8] = data->TermCharEnabled * 2; - /* Use term character? */ - buffer[9] = data->TermChar; - buffer[10] = 0; /* Reserved */ - buffer[11] = 0; /* Reserved */ + if (retval < 0) { + if (data->auto_abort) + usbtmc_ioctl_abort_bulk_out(data); + goto exit; + } + } - /* Send bulk URB */ - retval = usb_bulk_msg(data->usb_dev, - usb_sndbulkpipe(data->usb_dev, - data->bulk_out), - buffer, 12, &actual, USBTMC_TIMEOUT); + /* Loop until we have fetched everything we requested */ + remaining = count; + this_part = remaining; + done = 0; - /* Store bTag (in case we need to abort) */ - data->bTag_last_write = data->bTag; + while (remaining > 0) { + if (!data->rigol_quirk) { + dev_dbg(dev, "usb_bulk_msg_in: remaining(%zu), count(%zu)\n", remaining, count); - /* Increment bTag -- and increment again if zero */ - data->bTag++; - if (!data->bTag) - (data->bTag)++; + if (remaining > USBTMC_SIZE_IOBUFFER - USBTMC_HEADER_SIZE - 3) + this_part = USBTMC_SIZE_IOBUFFER - USBTMC_HEADER_SIZE - 3; + else + this_part = remaining; - if (retval < 0) { + retval = send_request_dev_dep_msg_in(data, this_part); + if (retval < 0) { dev_err(dev, "usb_bulk_msg returned %d\n", retval); - if (data->auto_abort) - usbtmc_ioctl_abort_bulk_out(data); - goto exit; + if (data->auto_abort) + usbtmc_ioctl_abort_bulk_out(data); + goto exit; + } } /* Send bulk URB */ @@ -442,51 +495,109 @@ static ssize_t usbtmc_read(struct file *filp, char __user *buf, buffer, USBTMC_SIZE_IOBUFFER, &actual, USBTMC_TIMEOUT); + dev_dbg(dev, "usb_bulk_msg: retval(%u), done(%zu), remaining(%zu), actual(%d)\n", retval, done, remaining, actual); + /* Store bTag (in case we need to abort) */ data->bTag_last_read = data->bTag; if (retval < 0) { - dev_err(dev, "Unable to read data, error %d\n", retval); + dev_dbg(dev, "Unable to read data, error %d\n", retval); if (data->auto_abort) usbtmc_ioctl_abort_bulk_in(data); goto exit; } - /* How many characters did the instrument send? */ - n_characters = buffer[4] + - (buffer[5] << 8) + - (buffer[6] << 16) + - (buffer[7] << 24); + /* Parse header in first packet */ + if ((done == 0) || !data->rigol_quirk) { + /* Sanity checks for the header */ + if (actual < USBTMC_HEADER_SIZE) { + dev_err(dev, "Device sent too small first packet: %u < %u\n", actual, USBTMC_HEADER_SIZE); + if (data->auto_abort) + usbtmc_ioctl_abort_bulk_in(data); + goto exit; + } - /* Ensure the instrument doesn't lie about it */ - if(n_characters > actual - 12) { - dev_err(dev, "Device lies about message size: %u > %d\n", n_characters, actual - 12); - n_characters = actual - 12; - } + if (buffer[0] != 2) { + dev_err(dev, "Device sent reply with wrong MsgID: %u != 2\n", buffer[0]); + if (data->auto_abort) + usbtmc_ioctl_abort_bulk_in(data); + goto exit; + } - /* Ensure the instrument doesn't send more back than requested */ - if(n_characters > this_part) { - dev_err(dev, "Device returns more than requested: %zu > %zu\n", done + n_characters, done + this_part); - n_characters = this_part; - } + if (buffer[1] != data->bTag_last_write) { + dev_err(dev, "Device sent reply with wrong bTag: %u != %u\n", buffer[1], data->bTag_last_write); + if (data->auto_abort) + usbtmc_ioctl_abort_bulk_in(data); + goto exit; + } - /* Bound amount of data received by amount of data requested */ - if (n_characters > this_part) - n_characters = this_part; + /* How many characters did the instrument send? */ + n_characters = buffer[4] + + (buffer[5] << 8) + + (buffer[6] << 16) + + (buffer[7] << 24); - /* Copy buffer to user space */ - if (copy_to_user(buf + done, &buffer[12], n_characters)) { - /* There must have been an addressing problem */ - retval = -EFAULT; - goto exit; + if (n_characters > this_part) { + dev_err(dev, "Device wants to return more data than requested: %u > %zu\n", n_characters, count); + if (data->auto_abort) + usbtmc_ioctl_abort_bulk_in(data); + goto exit; + } + + /* Remove the USBTMC header */ + actual -= USBTMC_HEADER_SIZE; + + /* Check if the message is smaller than requested */ + if (data->rigol_quirk) { + if (remaining > n_characters) + remaining = n_characters; + /* Remove padding if it exists */ + if (actual > remaining) + actual = remaining; + } + else { + if (this_part > n_characters) + this_part = n_characters; + /* Remove padding if it exists */ + if (actual > this_part) + actual = this_part; + } + + dev_dbg(dev, "Bulk-IN header: N_characters(%u), bTransAttr(%u)\n", n_characters, buffer[8]); + + remaining -= actual; + + /* Terminate if end-of-message bit received from device */ + if ((buffer[8] & 0x01) && (actual >= n_characters)) + remaining = 0; + + dev_dbg(dev, "Bulk-IN header: remaining(%zu), buf(%p), buffer(%p) done(%zu)\n", remaining,buf,buffer,done); + + + /* Copy buffer to user space */ + if (copy_to_user(buf + done, &buffer[USBTMC_HEADER_SIZE], actual)) { + /* There must have been an addressing problem */ + retval = -EFAULT; + goto exit; + } + done += actual; } + else { + if (actual > remaining) + actual = remaining; + + remaining -= actual; + + dev_dbg(dev, "Bulk-IN header cont: actual(%u), done(%zu), remaining(%zu), buf(%p), buffer(%p)\n", actual, done, remaining,buf,buffer); - done += n_characters; - /* Terminate if end-of-message bit received from device */ - if ((buffer[8] & 0x01) && (actual >= n_characters + 12)) - remaining = 0; - else - remaining -= n_characters; + /* Copy buffer to user space */ + if (copy_to_user(buf + done, buffer, actual)) { + /* There must have been an addressing problem */ + retval = -EFAULT; + goto exit; + } + done += actual; + } } /* Update file position value */ @@ -527,8 +638,8 @@ static ssize_t usbtmc_write(struct file *filp, const char __user *buf, done = 0; while (remaining > 0) { - if (remaining > USBTMC_SIZE_IOBUFFER - 12) { - this_part = USBTMC_SIZE_IOBUFFER - 12; + if (remaining > USBTMC_SIZE_IOBUFFER - USBTMC_HEADER_SIZE) { + this_part = USBTMC_SIZE_IOBUFFER - USBTMC_HEADER_SIZE; buffer[8] = 0; } else { this_part = remaining; @@ -538,24 +649,24 @@ static ssize_t usbtmc_write(struct file *filp, const char __user *buf, /* Setup IO buffer for DEV_DEP_MSG_OUT message */ buffer[0] = 1; buffer[1] = data->bTag; - buffer[2] = ~(data->bTag); + buffer[2] = ~data->bTag; buffer[3] = 0; /* Reserved */ - buffer[4] = this_part & 255; - buffer[5] = (this_part >> 8) & 255; - buffer[6] = (this_part >> 16) & 255; - buffer[7] = (this_part >> 24) & 255; + buffer[4] = this_part >> 0; + buffer[5] = this_part >> 8; + buffer[6] = this_part >> 16; + buffer[7] = this_part >> 24; /* buffer[8] is set above... */ buffer[9] = 0; /* Reserved */ buffer[10] = 0; /* Reserved */ buffer[11] = 0; /* Reserved */ - if (copy_from_user(&buffer[12], buf + done, this_part)) { + if (copy_from_user(&buffer[USBTMC_HEADER_SIZE], buf + done, this_part)) { retval = -EFAULT; goto exit; } - n_bytes = roundup(12 + this_part, 4); - memset(buffer + 12 + this_part, 0, n_bytes - (12 + this_part)); + n_bytes = roundup(USBTMC_HEADER_SIZE + this_part, 4); + memset(buffer + USBTMC_HEADER_SIZE + this_part, 0, n_bytes - (USBTMC_HEADER_SIZE + this_part)); do { retval = usb_bulk_msg(data->usb_dev, @@ -788,7 +899,7 @@ err_out: } #define capability_attribute(name) \ -static ssize_t show_##name(struct device *dev, \ +static ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct usb_interface *intf = to_usb_interface(dev); \ @@ -796,7 +907,7 @@ static ssize_t show_##name(struct device *dev, \ \ return sprintf(buf, "%d\n", data->capabilities.name); \ } \ -static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) +static DEVICE_ATTR_RO(name) capability_attribute(interface_capabilities); capability_attribute(device_capabilities); @@ -815,7 +926,7 @@ static struct attribute_group capability_attr_grp = { .attrs = capability_attrs, }; -static ssize_t show_TermChar(struct device *dev, +static ssize_t TermChar_show(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_interface *intf = to_usb_interface(dev); @@ -824,7 +935,7 @@ static ssize_t show_TermChar(struct device *dev, return sprintf(buf, "%c\n", data->TermChar); } -static ssize_t store_TermChar(struct device *dev, +static ssize_t TermChar_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { @@ -836,10 +947,10 @@ static ssize_t store_TermChar(struct device *dev, data->TermChar = buf[0]; return count; } -static DEVICE_ATTR(TermChar, S_IRUGO, show_TermChar, store_TermChar); +static DEVICE_ATTR_RW(TermChar); #define data_attribute(name) \ -static ssize_t show_##name(struct device *dev, \ +static ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct usb_interface *intf = to_usb_interface(dev); \ @@ -847,7 +958,7 @@ static ssize_t show_##name(struct device *dev, \ \ return sprintf(buf, "%d\n", data->name); \ } \ -static ssize_t store_##name(struct device *dev, \ +static ssize_t name##_store(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ { \ @@ -865,7 +976,7 @@ static ssize_t store_##name(struct device *dev, \ else \ return count; \ } \ -static DEVICE_ATTR(name, S_IRUGO, show_##name, store_##name) +static DEVICE_ATTR_RW(name) data_attribute(TermCharEnabled); data_attribute(auto_abort); @@ -989,7 +1100,7 @@ static int usbtmc_probe(struct usb_interface *intf, dev_dbg(&intf->dev, "%s called\n", __func__); - data = kmalloc(sizeof(struct usbtmc_device_data), GFP_KERNEL); + data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); if (!data) { dev_err(&intf->dev, "Unable to allocate kernel memory\n"); return -ENOMEM; @@ -1003,6 +1114,20 @@ static int usbtmc_probe(struct usb_interface *intf, mutex_init(&data->io_mutex); data->zombie = 0; + /* Determine if it is a Rigol or not */ + data->rigol_quirk = 0; + dev_dbg(&intf->dev, "Trying to find if device Vendor 0x%04X Product 0x%04X has the RIGOL quirk\n", + le16_to_cpu(data->usb_dev->descriptor.idVendor), + le16_to_cpu(data->usb_dev->descriptor.idProduct)); + for(n = 0; usbtmc_id_quirk[n].idVendor > 0; n++) { + if ((usbtmc_id_quirk[n].idVendor == le16_to_cpu(data->usb_dev->descriptor.idVendor)) && + (usbtmc_id_quirk[n].idProduct == le16_to_cpu(data->usb_dev->descriptor.idProduct))) { + dev_dbg(&intf->dev, "Setting this device as having the RIGOL quirk\n"); + data->rigol_quirk = 1; + break; + } + } + /* Initialize USBTMC bTag and other fields */ data->bTag = 1; data->TermCharEnabled = 0; diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c index b0585e623ba9..23559746be92 100644 --- a/drivers/usb/core/buffer.c +++ b/drivers/usb/core/buffer.c @@ -43,10 +43,11 @@ static const size_t pool_max[HCD_BUFFER_POOLS] = { * * Call this as part of initializing a host controller that uses the dma * memory allocators. It initializes some pools of dma-coherent memory that - * will be shared by all drivers using that controller, or returns a negative - * errno value on error. + * will be shared by all drivers using that controller. * * Call hcd_buffer_destroy() to clean up after using those pools. + * + * Return: 0 if successful. A negative errno value otherwise. */ int hcd_buffer_create(struct usb_hcd *hcd) { diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 7199adccf444..a6b2cabe7930 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -424,7 +424,8 @@ static int usb_parse_configuration(struct usb_device *dev, int cfgidx, memcpy(&config->desc, buffer, USB_DT_CONFIG_SIZE); if (config->desc.bDescriptorType != USB_DT_CONFIG || - config->desc.bLength < USB_DT_CONFIG_SIZE) { + config->desc.bLength < USB_DT_CONFIG_SIZE || + config->desc.bLength > size) { dev_err(ddev, "invalid descriptor for config index %d: " "type = 0x%X, length = %d\n", cfgidx, config->desc.bDescriptorType, config->desc.bLength); diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index caefc800f298..737e3c19967b 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -49,14 +49,14 @@ #include <linux/security.h> #include <linux/user_namespace.h> #include <linux/scatterlist.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/byteorder.h> #include <linux/moduleparam.h> #include "usb.h" #define USB_MAXBUS 64 -#define USB_DEVICE_MAX USB_MAXBUS * 128 +#define USB_DEVICE_MAX (USB_MAXBUS * 128) #define USB_SG_SIZE 16384 /* split-size for large txs */ /* Mutual exclusion for removal, open, and release */ @@ -725,15 +725,15 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype, /* * check for the special corner case 'get_device_id' in the printer - * class specification, where wIndex is (interface << 8 | altsetting) - * instead of just interface + * class specification, which we always want to allow as it is used + * to query things like ink level, etc. */ if (requesttype == 0xa1 && request == 0) { alt_setting = usb_find_alt_setting(ps->dev->actconfig, index >> 8, index & 0xff); if (alt_setting && alt_setting->desc.bInterfaceClass == USB_CLASS_PRINTER) - index >>= 8; + return 0; } index &= 0xff; @@ -1287,9 +1287,13 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, goto error; } for (totlen = u = 0; u < uurb->number_of_packets; u++) { - /* arbitrary limit, - * sufficient for USB 2.0 high-bandwidth iso */ - if (isopkt[u].length > 8192) { + /* + * arbitrary limit need for USB 3.0 + * bMaxBurst (0~15 allowed, 1~16 packets) + * bmAttributes (bit 1:0, mult 0~2, 1~3 packets) + * sizemax: 1024 * 16 * 3 = 49152 + */ + if (isopkt[u].length > 49152) { ret = -EINVAL; goto error; } @@ -1800,7 +1804,8 @@ static int proc_ioctl(struct dev_state *ps, struct usbdevfs_ioctl *ctl) /* alloc buffer */ if ((size = _IOC_SIZE(ctl->ioctl_code)) > 0) { - if ((buf = kmalloc(size, GFP_KERNEL)) == NULL) + buf = kmalloc(size, GFP_KERNEL); + if (buf == NULL) return -ENOMEM; if ((_IOC_DIR(ctl->ioctl_code) & _IOC_WRITE)) { if (copy_from_user(buf, ctl->data, size)) { diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 6eab440e1542..f7841d44feda 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -94,32 +94,27 @@ ssize_t usb_show_dynids(struct usb_dynids *dynids, char *buf) } EXPORT_SYMBOL_GPL(usb_show_dynids); -static ssize_t show_dynids(struct device_driver *driver, char *buf) +static ssize_t new_id_show(struct device_driver *driver, char *buf) { struct usb_driver *usb_drv = to_usb_driver(driver); return usb_show_dynids(&usb_drv->dynids, buf); } -static ssize_t store_new_id(struct device_driver *driver, +static ssize_t new_id_store(struct device_driver *driver, const char *buf, size_t count) { struct usb_driver *usb_drv = to_usb_driver(driver); return usb_store_new_id(&usb_drv->dynids, driver, buf, count); } -static DRIVER_ATTR(new_id, S_IRUGO | S_IWUSR, show_dynids, store_new_id); +static DRIVER_ATTR_RW(new_id); -/** - * store_remove_id - remove a USB device ID from this driver - * @driver: target device driver - * @buf: buffer for scanning device ID data - * @count: input size - * - * Removes a dynamic usb device ID from this driver. +/* + * Remove a USB device ID from this driver */ -static ssize_t -store_remove_id(struct device_driver *driver, const char *buf, size_t count) +static ssize_t remove_id_store(struct device_driver *driver, const char *buf, + size_t count) { struct usb_dynid *dynid, *n; struct usb_driver *usb_driver = to_usb_driver(driver); @@ -144,7 +139,12 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count) spin_unlock(&usb_driver->dynids.lock); return count; } -static DRIVER_ATTR(remove_id, S_IRUGO | S_IWUSR, show_dynids, store_remove_id); + +static ssize_t remove_id_show(struct device_driver *driver, char *buf) +{ + return new_id_show(driver, buf); +} +static DRIVER_ATTR_RW(remove_id); static int usb_create_newid_files(struct usb_driver *usb_drv) { @@ -457,6 +457,8 @@ static int usb_unbind_interface(struct device *dev) * Callers must own the device lock, so driver probe() entries don't need * extra locking, but other call contexts may need to explicitly claim that * lock. + * + * Return: 0 on success. */ int usb_driver_claim_interface(struct usb_driver *driver, struct usb_interface *iface, void *priv) @@ -658,6 +660,8 @@ EXPORT_SYMBOL_GPL(usb_match_one_id); * These device tables are exported with MODULE_DEVICE_TABLE, through * modutils, to support the driver loading functionality of USB hotplugging. * + * Return: The first matching usb_device_id, or %NULL. + * * What Matches: * * The "match_flags" element in a usb_device_id controls which @@ -823,7 +827,8 @@ static int usb_uevent(struct device *dev, struct kobj_uevent_env *env) * Registers a USB device driver with the USB core. The list of * unattached devices will be rescanned whenever a new driver is * added, allowing the new driver to attach to any recognized devices. - * Returns a negative error code on failure and 0 on success. + * + * Return: A negative error code on failure and 0 on success. */ int usb_register_device_driver(struct usb_device_driver *new_udriver, struct module *owner) @@ -879,7 +884,8 @@ EXPORT_SYMBOL_GPL(usb_deregister_device_driver); * Registers a USB interface driver with the USB core. The list of * unattached interfaces will be rescanned whenever a new driver is * added, allowing the new driver to attach to any recognized interfaces. - * Returns a negative error code on failure and 0 on success. + * + * Return: A negative error code on failure and 0 on success. * * NOTE: if you want your driver to use the USB major number, you must call * usb_register_dev() to enable that functionality. This function no longer @@ -1213,6 +1219,8 @@ done: * unpredictable times. * * This routine can run only in process context. + * + * Return: 0 if the suspend succeeded. */ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg) { @@ -1294,6 +1302,8 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg) * unpredictable times. * * This routine can run only in process context. + * + * Return: 0 on success. */ static int usb_resume_both(struct usb_device *udev, pm_message_t msg) { @@ -1491,6 +1501,8 @@ void usb_autosuspend_device(struct usb_device *udev) * The caller must hold @udev's device lock. * * This routine can run only in process context. + * + * Return: 0 on success. A negative error code otherwise. */ int usb_autoresume_device(struct usb_device *udev) { @@ -1600,6 +1612,8 @@ EXPORT_SYMBOL_GPL(usb_autopm_put_interface_no_suspend); * However if the autoresume fails then the counter is re-decremented. * * This routine can run only in process context. + * + * Return: 0 on success. */ int usb_autopm_get_interface(struct usb_interface *intf) { @@ -1633,6 +1647,8 @@ EXPORT_SYMBOL_GPL(usb_autopm_get_interface); * resumed. * * This routine can run in atomic context. + * + * Return: 0 on success. A negative error code otherwise. */ int usb_autopm_get_interface_async(struct usb_interface *intf) { @@ -1765,7 +1781,8 @@ int usb_runtime_idle(struct device *dev) */ if (autosuspend_check(udev) == 0) pm_runtime_autosuspend(dev); - return 0; + /* Tell the core not to suspend it, though. */ + return -EBUSY; } int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c index 68cc6532e749..39a24021fe4d 100644 --- a/drivers/usb/core/endpoint.c +++ b/drivers/usb/core/endpoint.c @@ -12,7 +12,6 @@ #include <linux/kernel.h> #include <linux/spinlock.h> #include <linux/slab.h> -#include <linux/idr.h> #include <linux/usb.h> #include "usb.h" @@ -33,31 +32,31 @@ struct ep_attribute { container_of(_attr, struct ep_attribute, attr) #define usb_ep_attr(field, format_string) \ -static ssize_t show_ep_##field(struct device *dev, \ +static ssize_t field##_show(struct device *dev, \ struct device_attribute *attr, \ char *buf) \ { \ struct ep_device *ep = to_ep_device(dev); \ return sprintf(buf, format_string, ep->desc->field); \ } \ -static DEVICE_ATTR(field, S_IRUGO, show_ep_##field, NULL); +static DEVICE_ATTR_RO(field) -usb_ep_attr(bLength, "%02x\n") -usb_ep_attr(bEndpointAddress, "%02x\n") -usb_ep_attr(bmAttributes, "%02x\n") -usb_ep_attr(bInterval, "%02x\n") +usb_ep_attr(bLength, "%02x\n"); +usb_ep_attr(bEndpointAddress, "%02x\n"); +usb_ep_attr(bmAttributes, "%02x\n"); +usb_ep_attr(bInterval, "%02x\n"); -static ssize_t show_ep_wMaxPacketSize(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t wMaxPacketSize_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct ep_device *ep = to_ep_device(dev); return sprintf(buf, "%04x\n", usb_endpoint_maxp(ep->desc) & 0x07ff); } -static DEVICE_ATTR(wMaxPacketSize, S_IRUGO, show_ep_wMaxPacketSize, NULL); +static DEVICE_ATTR_RO(wMaxPacketSize); -static ssize_t show_ep_type(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t type_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct ep_device *ep = to_ep_device(dev); char *type = "unknown"; @@ -78,10 +77,10 @@ static ssize_t show_ep_type(struct device *dev, struct device_attribute *attr, } return sprintf(buf, "%s\n", type); } -static DEVICE_ATTR(type, S_IRUGO, show_ep_type, NULL); +static DEVICE_ATTR_RO(type); -static ssize_t show_ep_interval(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t interval_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct ep_device *ep = to_ep_device(dev); char unit; @@ -124,10 +123,10 @@ static ssize_t show_ep_interval(struct device *dev, return sprintf(buf, "%d%cs\n", interval, unit); } -static DEVICE_ATTR(interval, S_IRUGO, show_ep_interval, NULL); +static DEVICE_ATTR_RO(interval); -static ssize_t show_ep_direction(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t direction_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct ep_device *ep = to_ep_device(dev); char *direction; @@ -140,7 +139,7 @@ static ssize_t show_ep_direction(struct device *dev, direction = "out"; return sprintf(buf, "%s\n", direction); } -static DEVICE_ATTR(direction, S_IRUGO, show_ep_direction, NULL); +static DEVICE_ATTR_RO(direction); static struct attribute *ep_dev_attrs[] = { &dev_attr_bLength.attr, diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index e5387a47ef6f..7421888087a3 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -94,7 +94,7 @@ static int init_usb_class(void) kref_init(&usb_class->kref); usb_class->class = class_create(THIS_MODULE, "usbmisc"); if (IS_ERR(usb_class->class)) { - result = IS_ERR(usb_class->class); + result = PTR_ERR(usb_class->class); printk(KERN_ERR "class_create failed for usb devices\n"); kfree(usb_class); usb_class = NULL; @@ -153,7 +153,7 @@ void usb_major_cleanup(void) * usb_deregister_dev() must be called when the driver is done with * the minor numbers given out by this function. * - * Returns -EINVAL if something bad happens with trying to register a + * Return: -EINVAL if something bad happens with trying to register a * device, and 0 on success. */ int usb_register_dev(struct usb_interface *intf, diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index caeb8d6d39fb..b9d3c43e3859 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -171,6 +171,8 @@ static void ehci_wait_for_companions(struct pci_dev *pdev, struct usb_hcd *hcd, * through the hotplug entry's driver_data. * * Store this function in the HCD's struct pci_driver as probe(). + * + * Return: 0 if successful. */ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) { diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index d53547d2e4c7..d6a8d23f047b 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -149,6 +149,27 @@ static const u8 usb3_rh_dev_descriptor[18] = { 0x01 /* __u8 bNumConfigurations; */ }; +/* usb 2.5 (wireless USB 1.0) root hub device descriptor */ +static const u8 usb25_rh_dev_descriptor[18] = { + 0x12, /* __u8 bLength; */ + 0x01, /* __u8 bDescriptorType; Device */ + 0x50, 0x02, /* __le16 bcdUSB; v2.5 */ + + 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */ + 0x00, /* __u8 bDeviceSubClass; */ + 0x00, /* __u8 bDeviceProtocol; [ usb 2.0 no TT ] */ + 0xFF, /* __u8 bMaxPacketSize0; always 0xFF (WUSB Spec 7.4.1). */ + + 0x6b, 0x1d, /* __le16 idVendor; Linux Foundation 0x1d6b */ + 0x02, 0x00, /* __le16 idProduct; device 0x0002 */ + KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */ + + 0x03, /* __u8 iManufacturer; */ + 0x02, /* __u8 iProduct; */ + 0x01, /* __u8 iSerialNumber; */ + 0x01 /* __u8 bNumConfigurations; */ +}; + /* usb 2.0 root hub device descriptor */ static const u8 usb2_rh_dev_descriptor [18] = { 0x12, /* __u8 bLength; */ @@ -357,9 +378,10 @@ MODULE_PARM_DESC(authorized_default, * @buf: Buffer for USB string descriptor (header + UTF-16LE) * @len: Length (in bytes; may be odd) of descriptor buffer. * - * The return value is the number of bytes filled in: 2 + 2*strlen(s) or - * buflen, whichever is less. + * Return: The number of bytes filled in: 2 + 2*strlen(s) or @len, + * whichever is less. * + * Note: * USB String descriptors can contain at most 126 characters; input * strings longer than that are truncated. */ @@ -395,7 +417,8 @@ ascii2desc(char const *s, u8 *buf, unsigned len) * * Produces either a manufacturer, product or serial number string for the * virtual root hub device. - * Returns the number of bytes filled in: the length of the descriptor or + * + * Return: The number of bytes filled in: the length of the descriptor or * of the provided buffer, whichever is less. */ static unsigned @@ -443,17 +466,13 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb) struct usb_ctrlrequest *cmd; u16 typeReq, wValue, wIndex, wLength; u8 *ubuf = urb->transfer_buffer; - /* - * tbuf should be as big as the BOS descriptor and - * the USB hub descriptor. - */ - u8 tbuf[USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE] - __attribute__((aligned(4))); - const u8 *bufp = tbuf; unsigned len = 0; int status; u8 patch_wakeup = 0; u8 patch_protocol = 0; + u16 tbuf_size; + u8 *tbuf = NULL; + const u8 *bufp; might_sleep(); @@ -473,6 +492,18 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb) if (wLength > urb->transfer_buffer_length) goto error; + /* + * tbuf should be at least as big as the + * USB hub descriptor. + */ + tbuf_size = max_t(u16, sizeof(struct usb_hub_descriptor), wLength); + tbuf = kzalloc(tbuf_size, GFP_KERNEL); + if (!tbuf) + return -ENOMEM; + + bufp = tbuf; + + urb->actual_length = 0; switch (typeReq) { @@ -527,6 +558,9 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb) case HCD_USB3: bufp = usb3_rh_dev_descriptor; break; + case HCD_USB25: + bufp = usb25_rh_dev_descriptor; + break; case HCD_USB2: bufp = usb2_rh_dev_descriptor; break; @@ -546,6 +580,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb) bufp = ss_rh_config_descriptor; len = sizeof ss_rh_config_descriptor; break; + case HCD_USB25: case HCD_USB2: bufp = hs_rh_config_descriptor; len = sizeof hs_rh_config_descriptor; @@ -666,18 +701,12 @@ error: bDeviceProtocol = USB_HUB_PR_HS_SINGLE_TT; } + kfree(tbuf); + /* any errors get returned through the urb completion */ spin_lock_irq(&hcd_root_hub_lock); usb_hcd_unlink_urb_from_ep(hcd, urb); - - /* This peculiar use of spinlocks echoes what real HC drivers do. - * Avoiding calls to local_irq_disable/enable makes the code - * RT-friendly. - */ - spin_unlock(&hcd_root_hub_lock); usb_hcd_giveback_urb(hcd, urb, status); - spin_lock(&hcd_root_hub_lock); - spin_unlock_irq(&hcd_root_hub_lock); return 0; } @@ -717,9 +746,7 @@ void usb_hcd_poll_rh_status(struct usb_hcd *hcd) memcpy(urb->transfer_buffer, buffer, length); usb_hcd_unlink_urb_from_ep(hcd, urb); - spin_unlock(&hcd_root_hub_lock); usb_hcd_giveback_urb(hcd, urb, 0); - spin_lock(&hcd_root_hub_lock); } else { length = 0; set_bit(HCD_FLAG_POLL_PENDING, &hcd->flags); @@ -809,10 +836,7 @@ static int usb_rh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) if (urb == hcd->status_urb) { hcd->status_urb = NULL; usb_hcd_unlink_urb_from_ep(hcd, urb); - - spin_unlock(&hcd_root_hub_lock); usb_hcd_giveback_urb(hcd, urb, status); - spin_lock(&hcd_root_hub_lock); } } done: @@ -825,9 +849,8 @@ static int usb_rh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) /* * Show & store the current value of authorized_default */ -static ssize_t usb_host_authorized_default_show(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t authorized_default_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct usb_device *rh_usb_dev = to_usb_device(dev); struct usb_bus *usb_bus = rh_usb_dev->bus; @@ -839,9 +862,9 @@ static ssize_t usb_host_authorized_default_show(struct device *dev, return snprintf(buf, PAGE_SIZE, "%u\n", usb_hcd->authorized_default); } -static ssize_t usb_host_authorized_default_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t size) +static ssize_t authorized_default_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) { ssize_t result; unsigned val; @@ -861,11 +884,7 @@ static ssize_t usb_host_authorized_default_store(struct device *dev, result = -EINVAL; return result; } - -static DEVICE_ATTR(authorized_default, 0644, - usb_host_authorized_default_show, - usb_host_authorized_default_store); - +static DEVICE_ATTR_RW(authorized_default); /* Group all the USB bus attributes */ static struct attribute *usb_bus_attrs[] = { @@ -913,6 +932,8 @@ static void usb_bus_init (struct usb_bus *bus) * * Assigns a bus number, and links the controller into usbcore data * structures so that it can be seen by scanning the bus list. + * + * Return: 0 if successful. A negative error code otherwise. */ static int usb_register_bus(struct usb_bus *bus) { @@ -977,6 +998,8 @@ static void usb_deregister_bus (struct usb_bus *bus) * the device properly in the device tree and then calls usb_new_device() * to register the usb device. It also assigns the root hub's USB address * (always 1). + * + * Return: 0 if successful. A negative error code otherwise. */ static int register_root_hub(struct usb_hcd *hcd) { @@ -1083,7 +1106,9 @@ EXPORT_SYMBOL_GPL(usb_hcd_end_port_resume); * @isoc: true for isochronous transactions, false for interrupt ones * @bytecount: how many bytes in the transaction. * - * Returns approximate bus time in nanoseconds for a periodic transaction. + * Return: Approximate bus time in nanoseconds for a periodic transaction. + * + * Note: * See USB 2.0 spec section 5.11.3; only periodic transfers need to be * scheduled in software, this function is only used for such scheduling. */ @@ -1141,7 +1166,7 @@ EXPORT_SYMBOL_GPL(usb_calc_bus_time); * be disabled. The actions carried out here are required for URB * submission, as well as for endpoint shutdown and for usb_kill_urb. * - * Returns 0 for no error, otherwise a negative error code (in which case + * Return: 0 for no error, otherwise a negative error code (in which case * the enqueue() method must fail). If no error occurs but enqueue() fails * anyway, it must call usb_hcd_unlink_urb_from_ep() before releasing * the private spinlock and returning. @@ -1196,7 +1221,7 @@ EXPORT_SYMBOL_GPL(usb_hcd_link_urb_to_ep); * be disabled. The actions carried out here are required for making * sure than an unlink is valid. * - * Returns 0 for no error, otherwise a negative error code (in which case + * Return: 0 for no error, otherwise a negative error code (in which case * the dequeue() method must fail). The possible error codes are: * * -EIDRM: @urb was not submitted or has already completed. @@ -1623,6 +1648,72 @@ int usb_hcd_unlink_urb (struct urb *urb, int status) /*-------------------------------------------------------------------------*/ +static void __usb_hcd_giveback_urb(struct urb *urb) +{ + struct usb_hcd *hcd = bus_to_hcd(urb->dev->bus); + int status = urb->unlinked; + unsigned long flags; + + urb->hcpriv = NULL; + if (unlikely((urb->transfer_flags & URB_SHORT_NOT_OK) && + urb->actual_length < urb->transfer_buffer_length && + !status)) + status = -EREMOTEIO; + + unmap_urb_for_dma(hcd, urb); + usbmon_urb_complete(&hcd->self, urb, status); + usb_unanchor_urb(urb); + + /* pass ownership to the completion handler */ + urb->status = status; + + /* + * We disable local IRQs here avoid possible deadlock because + * drivers may call spin_lock() to hold lock which might be + * acquired in one hard interrupt handler. + * + * The local_irq_save()/local_irq_restore() around complete() + * will be removed if current USB drivers have been cleaned up + * and no one may trigger the above deadlock situation when + * running complete() in tasklet. + */ + local_irq_save(flags); + urb->complete(urb); + local_irq_restore(flags); + + atomic_dec(&urb->use_count); + if (unlikely(atomic_read(&urb->reject))) + wake_up(&usb_kill_urb_queue); + usb_put_urb(urb); +} + +static void usb_giveback_urb_bh(unsigned long param) +{ + struct giveback_urb_bh *bh = (struct giveback_urb_bh *)param; + struct list_head local_list; + + spin_lock_irq(&bh->lock); + bh->running = true; + restart: + list_replace_init(&bh->head, &local_list); + spin_unlock_irq(&bh->lock); + + while (!list_empty(&local_list)) { + struct urb *urb; + + urb = list_entry(local_list.next, struct urb, urb_list); + list_del_init(&urb->urb_list); + __usb_hcd_giveback_urb(urb); + } + + /* check if there are new URBs to giveback */ + spin_lock_irq(&bh->lock); + if (!list_empty(&bh->head)) + goto restart; + bh->running = false; + spin_unlock_irq(&bh->lock); +} + /** * usb_hcd_giveback_urb - return URB from HCD to device driver * @hcd: host controller returning the URB @@ -1642,25 +1733,37 @@ int usb_hcd_unlink_urb (struct urb *urb, int status) */ void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status) { - urb->hcpriv = NULL; - if (unlikely(urb->unlinked)) - status = urb->unlinked; - else if (unlikely((urb->transfer_flags & URB_SHORT_NOT_OK) && - urb->actual_length < urb->transfer_buffer_length && - !status)) - status = -EREMOTEIO; + struct giveback_urb_bh *bh; + bool running, high_prio_bh; - unmap_urb_for_dma(hcd, urb); - usbmon_urb_complete(&hcd->self, urb, status); - usb_unanchor_urb(urb); + /* pass status to tasklet via unlinked */ + if (likely(!urb->unlinked)) + urb->unlinked = status; - /* pass ownership to the completion handler */ - urb->status = status; - urb->complete (urb); - atomic_dec (&urb->use_count); - if (unlikely(atomic_read(&urb->reject))) - wake_up (&usb_kill_urb_queue); - usb_put_urb (urb); + if (!hcd_giveback_urb_in_bh(hcd) && !is_root_hub(urb->dev)) { + __usb_hcd_giveback_urb(urb); + return; + } + + if (usb_pipeisoc(urb->pipe) || usb_pipeint(urb->pipe)) { + bh = &hcd->high_prio_bh; + high_prio_bh = true; + } else { + bh = &hcd->low_prio_bh; + high_prio_bh = false; + } + + spin_lock(&bh->lock); + list_add_tail(&urb->urb_list, &bh->head); + running = bh->running; + spin_unlock(&bh->lock); + + if (running) + ; + else if (high_prio_bh) + tasklet_hi_schedule(&bh->bh); + else + tasklet_schedule(&bh->bh); } EXPORT_SYMBOL_GPL(usb_hcd_giveback_urb); @@ -1759,7 +1862,7 @@ rescan: * pass in the current alternate interface setting in cur_alt, * and pass in the new alternate interface setting in new_alt. * - * Returns an error if the requested bandwidth change exceeds the + * Return: An error if the requested bandwidth change exceeds the * bus bandwidth or host controller internal resources. */ int usb_hcd_alloc_bandwidth(struct usb_device *udev, @@ -1929,9 +2032,12 @@ void usb_hcd_reset_endpoint(struct usb_device *udev, * @num_streams: number of streams to allocate. * @mem_flags: flags hcd should use to allocate memory. * - * Sets up a group of bulk endpoints to have num_streams stream IDs available. + * Sets up a group of bulk endpoints to have @num_streams stream IDs available. * Drivers may queue multiple transfers to different stream IDs, which may * complete in a different order than they were queued. + * + * Return: On success, the number of allocated streams. On failure, a negative + * error code. */ int usb_alloc_streams(struct usb_interface *interface, struct usb_host_endpoint **eps, unsigned int num_eps, @@ -2176,6 +2282,8 @@ EXPORT_SYMBOL_GPL(usb_hcd_resume_root_hub); * khubd identifying and possibly configuring the device. * This is needed by OTG controller drivers, where it helps meet * HNP protocol timing requirements for starting a port reset. + * + * Return: 0 if successful. */ int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num) { @@ -2210,6 +2318,8 @@ EXPORT_SYMBOL_GPL(usb_bus_start_enum); * * If the controller isn't HALTed, calls the driver's irq handler. * Checks whether the controller is now dead. + * + * Return: %IRQ_HANDLED if the IRQ was handled. %IRQ_NONE otherwise. */ irqreturn_t usb_hcd_irq (int irq, void *__hcd) { @@ -2282,6 +2392,14 @@ EXPORT_SYMBOL_GPL (usb_hc_died); /*-------------------------------------------------------------------------*/ +static void init_giveback_urb_bh(struct giveback_urb_bh *bh) +{ + + spin_lock_init(&bh->lock); + INIT_LIST_HEAD(&bh->head); + tasklet_init(&bh->bh, usb_giveback_urb_bh, (unsigned long)bh); +} + /** * usb_create_shared_hcd - create and initialize an HCD structure * @driver: HC driver that will use this hcd @@ -2295,7 +2413,8 @@ EXPORT_SYMBOL_GPL (usb_hc_died); * HC driver's private data. Initialize the generic members of the * hcd structure. * - * If memory is unavailable, returns NULL. + * Return: On success, a pointer to the created and initialized HCD structure. + * On failure (e.g. if memory is unavailable), %NULL. */ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver, struct device *dev, const char *bus_name, @@ -2359,7 +2478,8 @@ EXPORT_SYMBOL_GPL(usb_create_shared_hcd); * HC driver's private data. Initialize the generic members of the * hcd structure. * - * If memory is unavailable, returns NULL. + * Return: On success, a pointer to the created and initialized HCD + * structure. On failure (e.g. if memory is unavailable), %NULL. */ struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, struct device *dev, const char *bus_name) @@ -2511,6 +2631,9 @@ int usb_add_hcd(struct usb_hcd *hcd, case HCD_USB2: rhdev->speed = USB_SPEED_HIGH; break; + case HCD_USB25: + rhdev->speed = USB_SPEED_WIRELESS; + break; case HCD_USB3: rhdev->speed = USB_SPEED_SUPER; break; @@ -2535,7 +2658,7 @@ int usb_add_hcd(struct usb_hcd *hcd, * should already have been reset (and boot firmware kicked off etc). */ if (hcd->driver->reset && (retval = hcd->driver->reset(hcd)) < 0) { - dev_err(hcd->self.controller, "can't setup\n"); + dev_err(hcd->self.controller, "can't setup: %d\n", retval); goto err_hcd_driver_setup; } hcd->rh_pollable = 1; @@ -2545,6 +2668,10 @@ int usb_add_hcd(struct usb_hcd *hcd, && device_can_wakeup(&hcd->self.root_hub->dev)) dev_dbg(hcd->self.controller, "supports USB remote wakeup\n"); + /* initialize tasklets */ + init_giveback_urb_bh(&hcd->high_prio_bh); + init_giveback_urb_bh(&hcd->low_prio_bh); + /* enable irqs just before we start the controller, * if the BIOS provides legacy PCI irqs. */ @@ -2653,6 +2780,16 @@ void usb_remove_hcd(struct usb_hcd *hcd) usb_disconnect(&rhdev); /* Sets rhdev to NULL */ mutex_unlock(&usb_bus_list_lock); + /* + * tasklet_kill() isn't needed here because: + * - driver's disconnect() called from usb_disconnect() should + * make sure its URBs are completed during the disconnect() + * callback + * + * - it is too late to run complete() here since driver may have + * been removed already now + */ + /* Prevent any more root-hub status calls from the timer. * The HCD might still restart the timer (if a port status change * interrupt occurs), but usb_hcd_poll_rh_status() won't invoke diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index feef9351463d..dde4c83516a1 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -451,7 +451,7 @@ static void led_work (struct work_struct *work) if (hdev->state != USB_STATE_CONFIGURED || hub->quiescing) return; - for (i = 0; i < hub->descriptor->bNbrPorts; i++) { + for (i = 0; i < hdev->maxchild; i++) { unsigned selector, mode; /* 30%-50% duty cycle */ @@ -500,7 +500,7 @@ static void led_work (struct work_struct *work) } if (!changed && blinkenlights) { cursor++; - cursor %= hub->descriptor->bNbrPorts; + cursor %= hdev->maxchild; set_port_led(hub, cursor + 1, HUB_LED_GREEN); hub->indicator[cursor] = INDICATOR_CYCLE; changed++; @@ -668,6 +668,15 @@ resubmit: static inline int hub_clear_tt_buffer (struct usb_device *hdev, u16 devinfo, u16 tt) { + /* Need to clear both directions for control ep */ + if (((devinfo >> 11) & USB_ENDPOINT_XFERTYPE_MASK) == + USB_ENDPOINT_XFER_CONTROL) { + int status = usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0), + HUB_CLEAR_TT_BUFFER, USB_RT_PORT, + devinfo ^ 0x8000, tt, NULL, 0, 1000); + if (status) + return status; + } return usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0), HUB_CLEAR_TT_BUFFER, USB_RT_PORT, devinfo, tt, NULL, 0, 1000); @@ -718,18 +727,20 @@ static void hub_tt_work(struct work_struct *work) /** * usb_hub_set_port_power - control hub port's power state - * @hdev: target hub + * @hdev: USB device belonging to the usb hub + * @hub: target hub * @port1: port index * @set: expected status * * call this function to control port's power via setting or * clearing the port's PORT_POWER feature. + * + * Return: 0 if successful. A negative error code otherwise. */ -int usb_hub_set_port_power(struct usb_device *hdev, int port1, - bool set) +int usb_hub_set_port_power(struct usb_device *hdev, struct usb_hub *hub, + int port1, bool set) { int ret; - struct usb_hub *hub = usb_hub_to_struct_hub(hdev); struct usb_port *port_dev = hub->ports[port1 - 1]; if (set) @@ -753,6 +764,8 @@ int usb_hub_set_port_power(struct usb_device *hdev, int port1, * * It may not be possible for that hub to handle additional full (or low) * speed transactions until that state is fully cleared out. + * + * Return: 0 if successful. A negative error code otherwise. */ int usb_hub_clear_tt_buffer(struct urb *urb) { @@ -817,7 +830,7 @@ static unsigned hub_power_on(struct usb_hub *hub, bool do_delay) else dev_dbg(hub->intfdev, "trying to enable port power on " "non-switchable hub\n"); - for (port1 = 1; port1 <= hub->descriptor->bNbrPorts; port1++) + for (port1 = 1; port1 <= hub->hdev->maxchild; port1++) if (hub->ports[port1 - 1]->power_is_on) set_port_feature(hub->hdev, port1, USB_PORT_FEAT_POWER); else @@ -955,6 +968,8 @@ static void hub_port_logical_disconnect(struct usb_hub *hub, int port1) * see that the device has been disconnected. When the device is * physically unplugged and something is plugged in, the events will * be received and processed normally. + * + * Return: 0 if successful. A negative error code otherwise. */ int usb_remove_device(struct usb_device *udev) { @@ -1455,11 +1470,10 @@ static int hub_configure(struct usb_hub *hub, * and battery-powered root hubs (may provide just 8 mA). */ ret = usb_get_status(hdev, USB_RECIP_DEVICE, 0, &hubstatus); - if (ret < 2) { + if (ret) { message = "can't get hub status"; goto fail; } - le16_to_cpus(&hubstatus); hcd = bus_to_hcd(hdev->bus); if (hdev == hdev->bus->root_hub) { if (hcd->power_budget > 0) @@ -1548,10 +1562,15 @@ static int hub_configure(struct usb_hub *hub, if (hub->has_indicators && blinkenlights) hub->indicator [0] = INDICATOR_CYCLE; - for (i = 0; i < hdev->maxchild; i++) - if (usb_hub_create_port_device(hub, i + 1) < 0) + for (i = 0; i < hdev->maxchild; i++) { + ret = usb_hub_create_port_device(hub, i + 1); + if (ret < 0) { dev_err(hub->intfdev, "couldn't create port%d device.\n", i + 1); + hdev->maxchild = i; + goto fail_keep_maxchild; + } + } usb_hub_adjust_deviceremovable(hdev, hub->descriptor); @@ -1559,6 +1578,8 @@ static int hub_configure(struct usb_hub *hub, return 0; fail: + hdev->maxchild = 0; +fail_keep_maxchild: dev_err (hub_dev, "config failed, %s (err %d)\n", message, ret); /* hub_disconnect() frees urb and descriptor */ @@ -1769,15 +1790,17 @@ hub_ioctl(struct usb_interface *intf, unsigned int code, void *user_data) static int find_port_owner(struct usb_device *hdev, unsigned port1, struct dev_state ***ppowner) { + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); + if (hdev->state == USB_STATE_NOTATTACHED) return -ENODEV; if (port1 == 0 || port1 > hdev->maxchild) return -EINVAL; - /* This assumes that devices not managed by the hub driver + /* Devices not managed by the hub driver * will always have maxchild equal to 0. */ - *ppowner = &(usb_hub_to_struct_hub(hdev)->ports[port1 - 1]->port_owner); + *ppowner = &(hub->ports[port1 - 1]->port_owner); return 0; } @@ -2105,6 +2128,8 @@ static inline void announce_device(struct usb_device *udev) { } * @udev: newly addressed device (in ADDRESS state) * * Finish enumeration for On-The-Go devices + * + * Return: 0 if successful. A negative error code otherwise. */ static int usb_enumerate_device_otg(struct usb_device *udev) { @@ -2187,6 +2212,8 @@ fail: * If the device is WUSB and not authorized, we don't attempt to read * the string descriptors, as they will be errored out by the device * until it has been authorized. + * + * Return: 0 if successful. A negative error code otherwise. */ static int usb_enumerate_device(struct usb_device *udev) { @@ -2267,13 +2294,14 @@ static void set_usb_port_removable(struct usb_device *udev) * udev has already been installed, but udev is not yet visible through * sysfs or other filesystem code. * - * It will return if the device is configured properly or not. Zero if - * the interface was registered with the driver core; else a negative - * errno value. - * * This call is synchronous, and may not be used in an interrupt context. * * Only the hub driver or root-hub registrar should ever call this. + * + * Return: Whether the device is configured properly or not. Zero if the + * interface was registered with the driver core; else a negative errno + * value. + * */ int usb_new_device(struct usb_device *udev) { @@ -2381,6 +2409,8 @@ fail: * * We share a lock (that we have) with device_del(), so we need to * defer its call. + * + * Return: 0. */ int usb_deauthorize_device(struct usb_device *usb_dev) { @@ -2827,25 +2857,65 @@ void usb_enable_ltm(struct usb_device *udev) } EXPORT_SYMBOL_GPL(usb_enable_ltm); -#ifdef CONFIG_PM /* - * usb_disable_function_remotewakeup - disable usb3.0 - * device's function remote wakeup + * usb_enable_remote_wakeup - enable remote wakeup for a device + * @udev: target device + * + * For USB-2 devices: Set the device's remote wakeup feature. + * + * For USB-3 devices: Assume there's only one function on the device and + * enable remote wake for the first interface. FIXME if the interface + * association descriptor shows there's more than one function. + */ +static int usb_enable_remote_wakeup(struct usb_device *udev) +{ + if (udev->speed < USB_SPEED_SUPER) + return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, + USB_DEVICE_REMOTE_WAKEUP, 0, NULL, 0, + USB_CTRL_SET_TIMEOUT); + else + return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + USB_REQ_SET_FEATURE, USB_RECIP_INTERFACE, + USB_INTRF_FUNC_SUSPEND, + USB_INTRF_FUNC_SUSPEND_RW | + USB_INTRF_FUNC_SUSPEND_LP, + NULL, 0, USB_CTRL_SET_TIMEOUT); +} + +/* + * usb_disable_remote_wakeup - disable remote wakeup for a device * @udev: target device * - * Assume there's only one function on the USB 3.0 - * device and disable remote wake for the first - * interface. FIXME if the interface association - * descriptor shows there's more than one function. + * For USB-2 devices: Clear the device's remote wakeup feature. + * + * For USB-3 devices: Assume there's only one function on the device and + * disable remote wake for the first interface. FIXME if the interface + * association descriptor shows there's more than one function. */ -static int usb_disable_function_remotewakeup(struct usb_device *udev) +static int usb_disable_remote_wakeup(struct usb_device *udev) { - return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + if (udev->speed < USB_SPEED_SUPER) + return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE, + USB_DEVICE_REMOTE_WAKEUP, 0, NULL, 0, + USB_CTRL_SET_TIMEOUT); + else + return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), USB_REQ_CLEAR_FEATURE, USB_RECIP_INTERFACE, USB_INTRF_FUNC_SUSPEND, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); } +/* Count of wakeup-enabled devices at or below udev */ +static unsigned wakeup_enabled_descendants(struct usb_device *udev) +{ + struct usb_hub *hub = usb_hub_to_struct_hub(udev); + + return udev->do_remote_wakeup + + (hub ? hub->wakeup_enabled_descendants : 0); +} + /* * usb_port_suspend - suspend a usb device's upstream port * @udev: device that's no longer in active use, not a root hub @@ -2886,8 +2956,8 @@ static int usb_disable_function_remotewakeup(struct usb_device *udev) * Linux (2.6) currently has NO mechanisms to initiate that: no khubd * timer, no SRP, no requests through sysfs. * - * If Runtime PM isn't enabled or used, non-SuperSpeed devices really get - * suspended only when their bus goes into global suspend (i.e., the root + * If Runtime PM isn't enabled or used, non-SuperSpeed devices may not get + * suspended until their bus goes into global suspend (i.e., the root * hub is suspended). Nevertheless, we change @udev->state to * USB_STATE_SUSPENDED as this is the device's "logical" state. The actual * upstream port setting is stored in @udev->port_is_suspended. @@ -2898,7 +2968,6 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) { struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); struct usb_port *port_dev = hub->ports[udev->portnum - 1]; - enum pm_qos_flags_status pm_qos_stat; int port1 = udev->portnum; int status; bool really_suspend = true; @@ -2910,33 +2979,13 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) * we don't explicitly enable it here. */ if (udev->do_remote_wakeup) { - if (!hub_is_superspeed(hub->hdev)) { - status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), - USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, - USB_DEVICE_REMOTE_WAKEUP, 0, - NULL, 0, - USB_CTRL_SET_TIMEOUT); - } else { - /* Assume there's only one function on the USB 3.0 - * device and enable remote wake for the first - * interface. FIXME if the interface association - * descriptor shows there's more than one function. - */ - status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), - USB_REQ_SET_FEATURE, - USB_RECIP_INTERFACE, - USB_INTRF_FUNC_SUSPEND, - USB_INTRF_FUNC_SUSPEND_RW | - USB_INTRF_FUNC_SUSPEND_LP, - NULL, 0, - USB_CTRL_SET_TIMEOUT); - } + status = usb_enable_remote_wakeup(udev); if (status) { dev_dbg(&udev->dev, "won't remote wakeup, status %d\n", status); /* bail if autosuspend is requested */ if (PMSG_IS_AUTO(msg)) - return status; + goto err_wakeup; } } @@ -2945,28 +2994,36 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) usb_set_usb2_hardware_lpm(udev, 0); if (usb_disable_ltm(udev)) { - dev_err(&udev->dev, "%s Failed to disable LTM before suspend\n.", - __func__); - return -ENOMEM; + dev_err(&udev->dev, "Failed to disable LTM before suspend\n."); + status = -ENOMEM; + if (PMSG_IS_AUTO(msg)) + goto err_ltm; } if (usb_unlocked_disable_lpm(udev)) { - dev_err(&udev->dev, "%s Failed to disable LPM before suspend\n.", - __func__); - return -ENOMEM; + dev_err(&udev->dev, "Failed to disable LPM before suspend\n."); + status = -ENOMEM; + if (PMSG_IS_AUTO(msg)) + goto err_lpm3; } /* see 7.1.7.6 */ if (hub_is_superspeed(hub->hdev)) status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U3); - else if (PMSG_IS_AUTO(msg)) - status = set_port_feature(hub->hdev, port1, - USB_PORT_FEAT_SUSPEND); + /* * For system suspend, we do not need to enable the suspend feature * on individual USB-2 ports. The devices will automatically go * into suspend a few ms after the root hub stops sending packets. * The USB 2.0 spec calls this "global suspend". + * + * However, many USB hubs have a bug: They don't relay wakeup requests + * from a downstream port if the port's suspend feature isn't on. + * Therefore we will turn on the suspend feature if udev or any of its + * descendants is enabled for remote wakeup. */ + else if (PMSG_IS_AUTO(msg) || wakeup_enabled_descendants(udev) > 0) + status = set_port_feature(hub->hdev, port1, + USB_PORT_FEAT_SUSPEND); else { really_suspend = false; status = 0; @@ -2974,54 +3031,37 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) if (status) { dev_dbg(hub->intfdev, "can't suspend port %d, status %d\n", port1, status); - /* paranoia: "should not happen" */ - if (udev->do_remote_wakeup) { - if (!hub_is_superspeed(hub->hdev)) { - (void) usb_control_msg(udev, - usb_sndctrlpipe(udev, 0), - USB_REQ_CLEAR_FEATURE, - USB_RECIP_DEVICE, - USB_DEVICE_REMOTE_WAKEUP, 0, - NULL, 0, - USB_CTRL_SET_TIMEOUT); - } else - (void) usb_disable_function_remotewakeup(udev); - - } + /* Try to enable USB3 LPM and LTM again */ + usb_unlocked_enable_lpm(udev); + err_lpm3: + usb_enable_ltm(udev); + err_ltm: /* Try to enable USB2 hardware LPM again */ if (udev->usb2_hw_lpm_capable == 1) usb_set_usb2_hardware_lpm(udev, 1); - /* Try to enable USB3 LTM and LPM again */ - usb_enable_ltm(udev); - usb_unlocked_enable_lpm(udev); + if (udev->do_remote_wakeup) + (void) usb_disable_remote_wakeup(udev); + err_wakeup: /* System sleep transitions should never fail */ if (!PMSG_IS_AUTO(msg)) status = 0; } else { - /* device has up to 10 msec to fully suspend */ dev_dbg(&udev->dev, "usb %ssuspend, wakeup %d\n", (PMSG_IS_AUTO(msg) ? "auto-" : ""), udev->do_remote_wakeup); - usb_set_device_state(udev, USB_STATE_SUSPENDED); if (really_suspend) { udev->port_is_suspended = 1; + + /* device has up to 10 msec to fully suspend */ msleep(10); } + usb_set_device_state(udev, USB_STATE_SUSPENDED); } - /* - * Check whether current status meets the requirement of - * usb port power off mechanism - */ - pm_qos_stat = dev_pm_qos_flags(&port_dev->dev, - PM_QOS_FLAG_NO_POWER_OFF); - if (!udev->do_remote_wakeup - && pm_qos_stat != PM_QOS_FLAGS_ALL - && udev->persist_enabled - && !status) { + if (status == 0 && !udev->do_remote_wakeup && udev->persist_enabled) { pm_runtime_put_sync(&port_dev->dev); port_dev->did_runtime_put = true; } @@ -3075,8 +3115,6 @@ static int finish_port_resume(struct usb_device *udev) if (status == 0) { devstatus = 0; status = usb_get_status(udev, USB_RECIP_DEVICE, 0, &devstatus); - if (status >= 0) - status = (status > 0 ? 0 : -ENODEV); /* If a normal resume failed, try doing a reset-resume */ if (status && !udev->reset_resume && udev->persist_enabled) { @@ -3096,24 +3134,15 @@ static int finish_port_resume(struct usb_device *udev) * udev->reset_resume */ } else if (udev->actconfig && !udev->reset_resume) { - if (!hub_is_superspeed(udev->parent)) { - le16_to_cpus(&devstatus); + if (udev->speed < USB_SPEED_SUPER) { if (devstatus & (1 << USB_DEVICE_REMOTE_WAKEUP)) - status = usb_control_msg(udev, - usb_sndctrlpipe(udev, 0), - USB_REQ_CLEAR_FEATURE, - USB_RECIP_DEVICE, - USB_DEVICE_REMOTE_WAKEUP, 0, - NULL, 0, - USB_CTRL_SET_TIMEOUT); + status = usb_disable_remote_wakeup(udev); } else { status = usb_get_status(udev, USB_RECIP_INTERFACE, 0, &devstatus); - le16_to_cpus(&devstatus); if (!status && devstatus & (USB_INTRF_STAT_FUNC_RW_CAP | USB_INTRF_STAT_FUNC_RW)) - status = - usb_disable_function_remotewakeup(udev); + status = usb_disable_remote_wakeup(udev); } if (status) @@ -3247,8 +3276,6 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) return status; } -#endif /* CONFIG_PM */ - #ifdef CONFIG_PM_RUNTIME /* caller has locked udev */ @@ -3291,7 +3318,11 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) unsigned port1; int status; - /* Warn if children aren't already suspended */ + /* + * Warn if children aren't already suspended. + * Also, add up the number of wakeup-enabled descendants. + */ + hub->wakeup_enabled_descendants = 0; for (port1 = 1; port1 <= hdev->maxchild; port1++) { struct usb_device *udev; @@ -3301,6 +3332,9 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) if (PMSG_IS_AUTO(msg)) return -EBUSY; } + if (udev) + hub->wakeup_enabled_descendants += + wakeup_enabled_descendants(udev); } if (hdev->do_remote_wakeup && hub->quirk_check_port_auto_suspend) { @@ -3809,7 +3843,8 @@ EXPORT_SYMBOL_GPL(usb_disable_ltm); void usb_enable_ltm(struct usb_device *udev) { } EXPORT_SYMBOL_GPL(usb_enable_ltm); -#endif + +#endif /* CONFIG_PM */ /* USB 2.0 spec, 7.1.7.3 / fig 7-29: @@ -4449,11 +4484,10 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, status = usb_get_status(udev, USB_RECIP_DEVICE, 0, &devstat); - if (status < 2) { + if (status) { dev_dbg(&udev->dev, "get status %d ?\n", status); goto loop_disable; } - le16_to_cpus(&devstat); if ((devstat & (1 << USB_DEVICE_SELF_POWERED)) == 0) { dev_err(&udev->dev, "can't connect bus-powered hub " @@ -4614,9 +4648,7 @@ static void hub_events(void) hub_dev = hub->intfdev; intf = to_usb_interface(hub_dev); dev_dbg(hub_dev, "state %d ports %d chg %04x evt %04x\n", - hdev->state, hub->descriptor - ? hub->descriptor->bNbrPorts - : 0, + hdev->state, hdev->maxchild, /* NOTE: expects max 15 ports... */ (u16) hub->change_bits[0], (u16) hub->event_bits[0]); @@ -4661,7 +4693,7 @@ static void hub_events(void) } /* deal with port status changes */ - for (i = 1; i <= hub->descriptor->bNbrPorts; i++) { + for (i = 1; i <= hdev->maxchild; i++) { if (test_bit(i, hub->busy_bits)) continue; connect_change = test_bit(i, hub->change_bits); @@ -4764,7 +4796,8 @@ static void hub_events(void) hub->ports[i - 1]->child; dev_dbg(hub_dev, "warm reset port %d\n", i); - if (!udev) { + if (!udev || !(portstatus & + USB_PORT_STAT_CONNECTION)) { status = hub_port_reset(hub, i, NULL, HUB_BH_RESET_TIME, true); @@ -4774,8 +4807,8 @@ static void hub_events(void) usb_lock_device(udev); status = usb_reset_device(udev); usb_unlock_device(udev); + connect_change = 0; } - connect_change = 0; } if (connect_change) @@ -4911,7 +4944,8 @@ void usb_hub_cleanup(void) } /* usb_hub_cleanup() */ static int descriptors_changed(struct usb_device *udev, - struct usb_device_descriptor *old_device_descriptor) + struct usb_device_descriptor *old_device_descriptor, + struct usb_host_bos *old_bos) { int changed = 0; unsigned index; @@ -4925,6 +4959,16 @@ static int descriptors_changed(struct usb_device *udev, sizeof(*old_device_descriptor)) != 0) return 1; + if ((old_bos && !udev->bos) || (!old_bos && udev->bos)) + return 1; + if (udev->bos) { + len = le16_to_cpu(udev->bos->desc->wTotalLength); + if (len != le16_to_cpu(old_bos->desc->wTotalLength)) + return 1; + if (memcmp(udev->bos->desc, old_bos->desc, len)) + return 1; + } + /* Since the idVendor, idProduct, and bcdDevice values in the * device descriptor haven't changed, we will assume the * Manufacturer and Product strings haven't changed either. @@ -5000,10 +5044,11 @@ static int descriptors_changed(struct usb_device *udev, * re-connected. All drivers will be unbound, and the device will be * re-enumerated and probed all over again. * - * Returns 0 if the reset succeeded, -ENODEV if the device has been + * Return: 0 if the reset succeeded, -ENODEV if the device has been * flagged for logical disconnection, or some other negative error code * if the reset wasn't even attempted. * + * Note: * The caller must own the device lock. For example, it's safe to use * this from a driver probe() routine after downloading new firmware. * For calls that might not occur during probe(), drivers should lock @@ -5020,6 +5065,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev) struct usb_hub *parent_hub; struct usb_hcd *hcd = bus_to_hcd(udev->bus); struct usb_device_descriptor descriptor = udev->descriptor; + struct usb_host_bos *bos; int i, ret = 0; int port1 = udev->portnum; @@ -5037,6 +5083,9 @@ static int usb_reset_and_verify_device(struct usb_device *udev) } parent_hub = usb_hub_to_struct_hub(parent_hdev); + bos = udev->bos; + udev->bos = NULL; + /* Disable LPM and LTM while we reset the device and reinstall the alt * settings. Device-initiated LPM settings, and system exit latency * settings are cleared when the device is reset, so we have to set @@ -5070,7 +5119,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev) goto re_enumerate; /* Device might have changed firmware (DFU or similar) */ - if (descriptors_changed(udev, &descriptor)) { + if (descriptors_changed(udev, &descriptor, bos)) { dev_info(&udev->dev, "device firmware changed\n"); udev->descriptor = descriptor; /* for disconnect() calls */ goto re_enumerate; @@ -5143,11 +5192,15 @@ done: /* Now that the alt settings are re-installed, enable LTM and LPM. */ usb_unlocked_enable_lpm(udev); usb_enable_ltm(udev); + usb_release_bos_descriptor(udev); + udev->bos = bos; return 0; re_enumerate: /* LPM state doesn't matter when we're about to destroy the device. */ hub_port_logical_disconnect(parent_hub, port1); + usb_release_bos_descriptor(udev); + udev->bos = bos; return -ENODEV; } @@ -5159,8 +5212,9 @@ re_enumerate: * method), performs the port reset, and then lets the drivers know that * the reset is over (using their post_reset method). * - * Return value is the same as for usb_reset_and_verify_device(). + * Return: The same as for usb_reset_and_verify_device(). * + * Note: * The caller must own the device lock. For example, it's safe to use * this from a driver probe() routine after downloading new firmware. * For calls that might not occur during probe(), drivers should lock @@ -5298,7 +5352,7 @@ EXPORT_SYMBOL_GPL(usb_queue_reset_device); * USB drivers call this function to get hub's child device * pointer. * - * Return NULL if input param is invalid and + * Return: %NULL if input param is invalid and * child's usb_device pointer if non-NULL. */ struct usb_device *usb_hub_find_child(struct usb_device *hdev, @@ -5323,7 +5377,8 @@ void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1, { struct usb_hub *hub = usb_hub_to_struct_hub(hdev); - hub->ports[port1 - 1]->connect_type = type; + if (hub) + hub->ports[port1 - 1]->connect_type = type; } /** @@ -5331,14 +5386,17 @@ void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1, * @hdev: USB device belonging to the usb hub * @port1: port num of the port * - * Return connect type of the port and if input params are - * invalid, return USB_PORT_CONNECT_TYPE_UNKNOWN. + * Return: The connect type of the port if successful. Or + * USB_PORT_CONNECT_TYPE_UNKNOWN if input params are invalid. */ enum usb_port_connect_type usb_get_hub_port_connect_type(struct usb_device *hdev, int port1) { struct usb_hub *hub = usb_hub_to_struct_hub(hdev); + if (!hub) + return USB_PORT_CONNECT_TYPE_UNKNOWN; + return hub->ports[port1 - 1]->connect_type; } @@ -5389,14 +5447,17 @@ void usb_hub_adjust_deviceremovable(struct usb_device *hdev, * @hdev: USB device belonging to the usb hub * @port1: port num of the port * - * Return port's acpi handle if successful, NULL if params are - * invaild. + * Return: Port's acpi handle if successful, %NULL if params are + * invalid. */ acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, int port1) { struct usb_hub *hub = usb_hub_to_struct_hub(hdev); + if (!hub) + return NULL; + return DEVICE_ACPI_HANDLE(&hub->ports[port1 - 1]->dev); } #endif diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index 80ab9ee07017..4e4790dea343 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -59,6 +59,9 @@ struct usb_hub { struct usb_tt tt; /* Transaction Translator */ unsigned mA_per_port; /* current for each child */ +#ifdef CONFIG_PM + unsigned wakeup_enabled_descendants; +#endif unsigned limited_power:1; unsigned quiescing:1; @@ -100,7 +103,7 @@ extern int usb_hub_create_port_device(struct usb_hub *hub, int port1); extern void usb_hub_remove_port_device(struct usb_hub *hub, int port1); -extern int usb_hub_set_port_power(struct usb_device *hdev, +extern int usb_hub_set_port_power(struct usb_device *hdev, struct usb_hub *hub, int port1, bool set); extern struct usb_hub *usb_hub_to_struct_hub(struct usb_device *hdev); extern int hub_port_debounce(struct usb_hub *hub, int port1, diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 444d30e3a78b..82927e1ed27d 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -119,15 +119,15 @@ static int usb_internal_control_msg(struct usb_device *usb_dev, * This function sends a simple control message to a specified endpoint and * waits for the message to complete, or timeout. * - * If successful, it returns the number of bytes transferred, otherwise a - * negative error number. - * * Don't use this function from within an interrupt context, like a bottom half * handler. If you need an asynchronous message, or need to send a message * from within interrupt context, use usb_submit_urb(). * If a thread in your driver uses this call, make sure your disconnect() * method can wait for it to complete. Since you don't have a handle on the * URB used, you can't cancel the request. + * + * Return: If successful, the number of bytes transferred. Otherwise, a negative + * error number. */ int usb_control_msg(struct usb_device *dev, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void *data, @@ -170,15 +170,16 @@ EXPORT_SYMBOL_GPL(usb_control_msg); * This function sends a simple interrupt message to a specified endpoint and * waits for the message to complete, or timeout. * - * If successful, it returns 0, otherwise a negative error number. The number - * of actual bytes transferred will be stored in the actual_length paramater. - * * Don't use this function from within an interrupt context, like a bottom half * handler. If you need an asynchronous message, or need to send a message * from within interrupt context, use usb_submit_urb() If a thread in your * driver uses this call, make sure your disconnect() method can wait for it to * complete. Since you don't have a handle on the URB used, you can't cancel * the request. + * + * Return: + * If successful, 0. Otherwise a negative error number. The number of actual + * bytes transferred will be stored in the @actual_length paramater. */ int usb_interrupt_msg(struct usb_device *usb_dev, unsigned int pipe, void *data, int len, int *actual_length, int timeout) @@ -203,9 +204,6 @@ EXPORT_SYMBOL_GPL(usb_interrupt_msg); * This function sends a simple bulk message to a specified endpoint * and waits for the message to complete, or timeout. * - * If successful, it returns 0, otherwise a negative error number. The number - * of actual bytes transferred will be stored in the actual_length paramater. - * * Don't use this function from within an interrupt context, like a bottom half * handler. If you need an asynchronous message, or need to send a message * from within interrupt context, use usb_submit_urb() If a thread in your @@ -217,6 +215,11 @@ EXPORT_SYMBOL_GPL(usb_interrupt_msg); * users are forced to abuse this routine by using it to submit URBs for * interrupt endpoints. We will take the liberty of creating an interrupt URB * (with the default interval) if the target is an interrupt endpoint. + * + * Return: + * If successful, 0. Otherwise a negative error number. The number of actual + * bytes transferred will be stored in the @actual_length paramater. + * */ int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe, void *data, int len, int *actual_length, int timeout) @@ -252,7 +255,7 @@ static void sg_clean(struct usb_sg_request *io) { if (io->urbs) { while (io->entries--) - usb_free_urb(io->urbs [io->entries]); + usb_free_urb(io->urbs[io->entries]); kfree(io->urbs); io->urbs = NULL; } @@ -300,10 +303,10 @@ static void sg_complete(struct urb *urb) */ spin_unlock(&io->lock); for (i = 0, found = 0; i < io->entries; i++) { - if (!io->urbs [i] || !io->urbs [i]->dev) + if (!io->urbs[i] || !io->urbs[i]->dev) continue; if (found) { - retval = usb_unlink_urb(io->urbs [i]); + retval = usb_unlink_urb(io->urbs[i]); if (retval != -EINPROGRESS && retval != -ENODEV && retval != -EBUSY && @@ -311,7 +314,7 @@ static void sg_complete(struct urb *urb) dev_err(&io->dev->dev, "%s, unlink --> %d\n", __func__, retval); - } else if (urb == io->urbs [i]) + } else if (urb == io->urbs[i]) found = 1; } spin_lock(&io->lock); @@ -341,9 +344,9 @@ static void sg_complete(struct urb *urb) * send every byte identified in the list. * @mem_flags: SLAB_* flags affecting memory allocations in this call * - * Returns zero for success, else a negative errno value. This initializes a - * scatter/gather request, allocating resources such as I/O mappings and urb - * memory (except maybe memory used by USB controller drivers). + * This initializes a scatter/gather request, allocating resources such as + * I/O mappings and urb memory (except maybe memory used by USB controller + * drivers). * * The request must be issued using usb_sg_wait(), which waits for the I/O to * complete (or to be canceled) and then cleans up all resources allocated by @@ -351,6 +354,8 @@ static void sg_complete(struct urb *urb) * * The request may be canceled with usb_sg_cancel(), either before or after * usb_sg_wait() is called. + * + * Return: Zero for success, else a negative errno value. */ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, unsigned pipe, unsigned period, struct scatterlist *sg, @@ -379,7 +384,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, } /* initialize all the urbs we'll use */ - io->urbs = kmalloc(io->entries * sizeof *io->urbs, mem_flags); + io->urbs = kmalloc(io->entries * sizeof(*io->urbs), mem_flags); if (!io->urbs) goto nomem; @@ -511,7 +516,7 @@ void usb_sg_wait(struct usb_sg_request *io) int retval; io->urbs[i]->dev = io->dev; - retval = usb_submit_urb(io->urbs [i], GFP_ATOMIC); + retval = usb_submit_urb(io->urbs[i], GFP_ATOMIC); /* after we submit, let completions or cancelations fire; * we handshake using io->status. @@ -586,9 +591,9 @@ void usb_sg_cancel(struct usb_sg_request *io) for (i = 0; i < io->entries; i++) { int retval; - if (!io->urbs [i]->dev) + if (!io->urbs[i]->dev) continue; - retval = usb_unlink_urb(io->urbs [i]); + retval = usb_unlink_urb(io->urbs[i]); if (retval != -EINPROGRESS && retval != -ENODEV && retval != -EBUSY @@ -623,7 +628,7 @@ EXPORT_SYMBOL_GPL(usb_sg_cancel); * * This call is synchronous, and may not be used in an interrupt context. * - * Returns the number of bytes received on success, or else the status code + * Return: The number of bytes received on success, or else the status code * returned by the underlying usb_control_msg() call. */ int usb_get_descriptor(struct usb_device *dev, unsigned char type, @@ -671,7 +676,7 @@ EXPORT_SYMBOL_GPL(usb_get_descriptor); * * This call is synchronous, and may not be used in an interrupt context. * - * Returns the number of bytes received on success, or else the status code + * Return: The number of bytes received on success, or else the status code * returned by the underlying usb_control_msg() call. */ static int usb_get_string(struct usb_device *dev, unsigned short langid, @@ -805,7 +810,7 @@ static int usb_get_langid(struct usb_device *dev, unsigned char *tbuf) * * This call is synchronous, and may not be used in an interrupt context. * - * Returns length of the string (>= 0) or usb_control_msg status (< 0). + * Return: length of the string (>= 0) or usb_control_msg status (< 0). */ int usb_string(struct usb_device *dev, int index, char *buf, size_t size) { @@ -853,8 +858,8 @@ EXPORT_SYMBOL_GPL(usb_string); * @udev: the device whose string descriptor is being read * @index: the descriptor index * - * Returns a pointer to a kmalloc'ed buffer containing the descriptor string, - * or NULL if the index is 0 or the string could not be read. + * Return: A pointer to a kmalloc'ed buffer containing the descriptor string, + * or %NULL if the index is 0 or the string could not be read. */ char *usb_cache_string(struct usb_device *udev, int index) { @@ -894,7 +899,7 @@ char *usb_cache_string(struct usb_device *udev, int index) * * This call is synchronous, and may not be used in an interrupt context. * - * Returns the number of bytes received on success, or else the status code + * Return: The number of bytes received on success, or else the status code * returned by the underlying usb_control_msg() call. */ int usb_get_device_descriptor(struct usb_device *dev, unsigned int size) @@ -934,13 +939,13 @@ int usb_get_device_descriptor(struct usb_device *dev, unsigned int size) * * This call is synchronous, and may not be used in an interrupt context. * - * Returns the number of bytes received on success, or else the status code - * returned by the underlying usb_control_msg() call. + * Returns 0 and the status value in *@data (in host byte order) on success, + * or else the status code from the underlying usb_control_msg() call. */ int usb_get_status(struct usb_device *dev, int type, int target, void *data) { int ret; - u16 *status = kmalloc(sizeof(*status), GFP_KERNEL); + __le16 *status = kmalloc(sizeof(*status), GFP_KERNEL); if (!status) return -ENOMEM; @@ -949,7 +954,12 @@ int usb_get_status(struct usb_device *dev, int type, int target, void *data) USB_REQ_GET_STATUS, USB_DIR_IN | type, 0, target, status, sizeof(*status), USB_CTRL_GET_TIMEOUT); - *(u16 *)data = *status; + if (ret == 2) { + *(u16 *) data = le16_to_cpu(*status); + ret = 0; + } else if (ret >= 0) { + ret = -EIO; + } kfree(status); return ret; } @@ -975,7 +985,7 @@ EXPORT_SYMBOL_GPL(usb_get_status); * * This call is synchronous, and may not be used in an interrupt context. * - * Returns zero on success, or else the status code returned by the + * Return: Zero on success, or else the status code returned by the * underlying usb_control_msg() call. */ int usb_clear_halt(struct usb_device *dev, int pipe) @@ -1272,7 +1282,7 @@ void usb_enable_interface(struct usb_device *dev, * endpoints in that interface; all such urbs must first be completed * (perhaps forced by unlinking). * - * Returns zero on success, or else the status code returned by the + * Return: Zero on success, or else the status code returned by the * underlying usb_control_msg() call. */ int usb_set_interface(struct usb_device *dev, int interface, int alternate) @@ -1426,7 +1436,7 @@ EXPORT_SYMBOL_GPL(usb_set_interface); * * The caller must own the device lock. * - * Returns zero on success, else a negative error code. + * Return: Zero on success, else a negative error code. */ int usb_reset_configuration(struct usb_device *dev) { @@ -1968,7 +1978,7 @@ static void cancel_async_set_config(struct usb_device *udev) * routine gets around the normal restrictions by using a work thread to * submit the change-config request. * - * Returns 0 if the request was successfully queued, error code otherwise. + * Return: 0 if the request was successfully queued, error code otherwise. * The caller has no way to know whether the queued request will eventually * succeed. */ diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index b8bad294eeb8..51542f852393 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -23,8 +23,8 @@ static const struct attribute_group *port_dev_group[]; -static ssize_t show_port_connect_type(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t connect_type_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct usb_port *port_dev = to_usb_port(dev); char *result; @@ -46,8 +46,7 @@ static ssize_t show_port_connect_type(struct device *dev, return sprintf(buf, "%s\n", result); } -static DEVICE_ATTR(connect_type, S_IRUGO, show_port_connect_type, - NULL); +static DEVICE_ATTR_RO(connect_type); static struct attribute *port_dev_attrs[] = { &dev_attr_connect_type.attr, @@ -86,25 +85,22 @@ static int usb_port_runtime_resume(struct device *dev) usb_autopm_get_interface(intf); set_bit(port1, hub->busy_bits); - retval = usb_hub_set_port_power(hdev, port1, true); + retval = usb_hub_set_port_power(hdev, hub, port1, true); if (port_dev->child && !retval) { /* - * Wait for usb hub port to be reconnected in order to make - * the resume procedure successful. + * Attempt to wait for usb hub port to be reconnected in order + * to make the resume procedure successful. The device may have + * disconnected while the port was powered off, so ignore the + * return status. */ retval = hub_port_debounce_be_connected(hub, port1); - if (retval < 0) { + if (retval < 0) dev_dbg(&port_dev->dev, "can't get reconnection after setting port power on, status %d\n", retval); - goto out; - } usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_ENABLE); - - /* Set return value to 0 if debounce successful */ retval = 0; } -out: clear_bit(port1, hub->busy_bits); usb_autopm_put_interface(intf); return retval; @@ -128,7 +124,7 @@ static int usb_port_runtime_suspend(struct device *dev) usb_autopm_get_interface(intf); set_bit(port1, hub->busy_bits); - retval = usb_hub_set_port_power(hdev, port1, false); + retval = usb_hub_set_port_power(hdev, hub, port1, false); usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_CONNECTION); usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_ENABLE); clear_bit(port1, hub->busy_bits); @@ -141,7 +137,6 @@ static const struct dev_pm_ops usb_port_pm_ops = { #ifdef CONFIG_PM_RUNTIME .runtime_suspend = usb_port_runtime_suspend, .runtime_resume = usb_port_runtime_resume, - .runtime_idle = pm_generic_runtime_idle, #endif }; diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index a63598895077..5b44cd47da5b 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -78,6 +78,12 @@ static const struct usb_device_id usb_quirk_list[] = { { USB_DEVICE(0x04d8, 0x000c), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, + /* CarrolTouch 4000U */ + { USB_DEVICE(0x04e7, 0x0009), .driver_info = USB_QUIRK_RESET_RESUME }, + + /* CarrolTouch 4500U */ + { USB_DEVICE(0x04e7, 0x0030), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Samsung Android phone modem - ID conflict with SPH-I500 */ { USB_DEVICE(0x04e8, 0x6601), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index aa38db44818a..6d2c8edb1ffe 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -18,8 +18,8 @@ /* Active configuration fields */ #define usb_actconfig_show(field, format_string) \ -static ssize_t show_##field(struct device *dev, \ - struct device_attribute *attr, char *buf) \ +static ssize_t field##_show(struct device *dev, \ + struct device_attribute *attr, char *buf) \ { \ struct usb_device *udev; \ struct usb_host_config *actconfig; \ @@ -35,12 +35,12 @@ static ssize_t show_##field(struct device *dev, \ #define usb_actconfig_attr(field, format_string) \ usb_actconfig_show(field, format_string) \ - static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); + static DEVICE_ATTR_RO(field) -usb_actconfig_attr(bNumInterfaces, "%2d\n") -usb_actconfig_attr(bmAttributes, "%2x\n") +usb_actconfig_attr(bNumInterfaces, "%2d\n"); +usb_actconfig_attr(bmAttributes, "%2x\n"); -static ssize_t show_bMaxPower(struct device *dev, +static ssize_t bMaxPower_show(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_device *udev; @@ -52,9 +52,9 @@ static ssize_t show_bMaxPower(struct device *dev, return 0; return sprintf(buf, "%dmA\n", usb_get_max_power(udev, actconfig)); } -static DEVICE_ATTR(bMaxPower, S_IRUGO, show_bMaxPower, NULL); +static DEVICE_ATTR_RO(bMaxPower); -static ssize_t show_configuration_string(struct device *dev, +static ssize_t configuration_show(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_device *udev; @@ -66,14 +66,14 @@ static ssize_t show_configuration_string(struct device *dev, return 0; return sprintf(buf, "%s\n", actconfig->string); } -static DEVICE_ATTR(configuration, S_IRUGO, show_configuration_string, NULL); +static DEVICE_ATTR_RO(configuration); /* configuration value is always present, and r/w */ usb_actconfig_show(bConfigurationValue, "%u\n"); -static ssize_t -set_bConfigurationValue(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t bConfigurationValue_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { struct usb_device *udev = to_usb_device(dev); int config, value; @@ -85,13 +85,12 @@ set_bConfigurationValue(struct device *dev, struct device_attribute *attr, usb_unlock_device(udev); return (value < 0) ? value : count; } - static DEVICE_ATTR_IGNORE_LOCKDEP(bConfigurationValue, S_IRUGO | S_IWUSR, - show_bConfigurationValue, set_bConfigurationValue); + bConfigurationValue_show, bConfigurationValue_store); /* String fields */ #define usb_string_attr(name) \ -static ssize_t show_##name(struct device *dev, \ +static ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct usb_device *udev; \ @@ -103,14 +102,14 @@ static ssize_t show_##name(struct device *dev, \ usb_unlock_device(udev); \ return retval; \ } \ -static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); +static DEVICE_ATTR_RO(name) usb_string_attr(product); usb_string_attr(manufacturer); usb_string_attr(serial); -static ssize_t -show_speed(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t speed_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev; char *speed; @@ -139,40 +138,40 @@ show_speed(struct device *dev, struct device_attribute *attr, char *buf) } return sprintf(buf, "%s\n", speed); } -static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL); +static DEVICE_ATTR_RO(speed); -static ssize_t -show_busnum(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t busnum_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev; udev = to_usb_device(dev); return sprintf(buf, "%d\n", udev->bus->busnum); } -static DEVICE_ATTR(busnum, S_IRUGO, show_busnum, NULL); +static DEVICE_ATTR_RO(busnum); -static ssize_t -show_devnum(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t devnum_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev; udev = to_usb_device(dev); return sprintf(buf, "%d\n", udev->devnum); } -static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL); +static DEVICE_ATTR_RO(devnum); -static ssize_t -show_devpath(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t devpath_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev; udev = to_usb_device(dev); return sprintf(buf, "%s\n", udev->devpath); } -static DEVICE_ATTR(devpath, S_IRUGO, show_devpath, NULL); +static DEVICE_ATTR_RO(devpath); -static ssize_t -show_version(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t version_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev; u16 bcdUSB; @@ -181,30 +180,30 @@ show_version(struct device *dev, struct device_attribute *attr, char *buf) bcdUSB = le16_to_cpu(udev->descriptor.bcdUSB); return sprintf(buf, "%2x.%02x\n", bcdUSB >> 8, bcdUSB & 0xff); } -static DEVICE_ATTR(version, S_IRUGO, show_version, NULL); +static DEVICE_ATTR_RO(version); -static ssize_t -show_maxchild(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t maxchild_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev; udev = to_usb_device(dev); return sprintf(buf, "%d\n", udev->maxchild); } -static DEVICE_ATTR(maxchild, S_IRUGO, show_maxchild, NULL); +static DEVICE_ATTR_RO(maxchild); -static ssize_t -show_quirks(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t quirks_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev; udev = to_usb_device(dev); return sprintf(buf, "0x%x\n", udev->quirks); } -static DEVICE_ATTR(quirks, S_IRUGO, show_quirks, NULL); +static DEVICE_ATTR_RO(quirks); -static ssize_t -show_avoid_reset_quirk(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t avoid_reset_quirk_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct usb_device *udev; @@ -212,9 +211,9 @@ show_avoid_reset_quirk(struct device *dev, struct device_attribute *attr, char * return sprintf(buf, "%d\n", !!(udev->quirks & USB_QUIRK_RESET)); } -static ssize_t -set_avoid_reset_quirk(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t avoid_reset_quirk_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { struct usb_device *udev = to_usb_device(dev); int val; @@ -229,22 +228,20 @@ set_avoid_reset_quirk(struct device *dev, struct device_attribute *attr, usb_unlock_device(udev); return count; } +static DEVICE_ATTR_RW(avoid_reset_quirk); -static DEVICE_ATTR(avoid_reset_quirk, S_IRUGO | S_IWUSR, - show_avoid_reset_quirk, set_avoid_reset_quirk); - -static ssize_t -show_urbnum(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t urbnum_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev; udev = to_usb_device(dev); return sprintf(buf, "%d\n", atomic_read(&udev->urbnum)); } -static DEVICE_ATTR(urbnum, S_IRUGO, show_urbnum, NULL); +static DEVICE_ATTR_RO(urbnum); -static ssize_t -show_removable(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t removable_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev; char *state; @@ -264,30 +261,29 @@ show_removable(struct device *dev, struct device_attribute *attr, char *buf) return sprintf(buf, "%s\n", state); } -static DEVICE_ATTR(removable, S_IRUGO, show_removable, NULL); +static DEVICE_ATTR_RO(removable); -static ssize_t -show_ltm_capable(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t ltm_capable_show(struct device *dev, + struct device_attribute *attr, char *buf) { if (usb_device_supports_ltm(to_usb_device(dev))) return sprintf(buf, "%s\n", "yes"); return sprintf(buf, "%s\n", "no"); } -static DEVICE_ATTR(ltm_capable, S_IRUGO, show_ltm_capable, NULL); +static DEVICE_ATTR_RO(ltm_capable); #ifdef CONFIG_PM -static ssize_t -show_persist(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t persist_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev = to_usb_device(dev); return sprintf(buf, "%d\n", udev->persist_enabled); } -static ssize_t -set_persist(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t persist_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) { struct usb_device *udev = to_usb_device(dev); int value; @@ -304,8 +300,7 @@ set_persist(struct device *dev, struct device_attribute *attr, usb_unlock_device(udev); return count; } - -static DEVICE_ATTR(persist, S_IRUGO | S_IWUSR, show_persist, set_persist); +static DEVICE_ATTR_RW(persist); static int add_persist_attributes(struct device *dev) { @@ -340,17 +335,15 @@ static void remove_persist_attributes(struct device *dev) #ifdef CONFIG_PM_RUNTIME -static ssize_t -show_connected_duration(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t connected_duration_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct usb_device *udev = to_usb_device(dev); return sprintf(buf, "%u\n", jiffies_to_msecs(jiffies - udev->connect_time)); } - -static DEVICE_ATTR(connected_duration, S_IRUGO, show_connected_duration, NULL); +static DEVICE_ATTR_RO(connected_duration); /* * If the device is resumed, the last time the device was suspended has @@ -359,9 +352,8 @@ static DEVICE_ATTR(connected_duration, S_IRUGO, show_connected_duration, NULL); * * If the device is suspended, the active_duration is up-to-date. */ -static ssize_t -show_active_duration(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t active_duration_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct usb_device *udev = to_usb_device(dev); int duration; @@ -372,18 +364,17 @@ show_active_duration(struct device *dev, struct device_attribute *attr, duration = jiffies_to_msecs(udev->active_duration); return sprintf(buf, "%u\n", duration); } +static DEVICE_ATTR_RO(active_duration); -static DEVICE_ATTR(active_duration, S_IRUGO, show_active_duration, NULL); - -static ssize_t -show_autosuspend(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t autosuspend_show(struct device *dev, + struct device_attribute *attr, char *buf) { return sprintf(buf, "%d\n", dev->power.autosuspend_delay / 1000); } -static ssize_t -set_autosuspend(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t autosuspend_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) { int value; @@ -394,9 +385,7 @@ set_autosuspend(struct device *dev, struct device_attribute *attr, pm_runtime_set_autosuspend_delay(dev, value * 1000); return count; } - -static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR, - show_autosuspend, set_autosuspend); +static DEVICE_ATTR_RW(autosuspend); static const char on_string[] = "on"; static const char auto_string[] = "auto"; @@ -411,8 +400,8 @@ static void warn_level(void) { } } -static ssize_t -show_level(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t level_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_device *udev = to_usb_device(dev); const char *p = auto_string; @@ -423,9 +412,8 @@ show_level(struct device *dev, struct device_attribute *attr, char *buf) return sprintf(buf, "%s\n", p); } -static ssize_t -set_level(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t level_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) { struct usb_device *udev = to_usb_device(dev); int len = count; @@ -453,12 +441,10 @@ set_level(struct device *dev, struct device_attribute *attr, usb_unlock_device(udev); return rc; } +static DEVICE_ATTR_RW(level); -static DEVICE_ATTR(level, S_IRUGO | S_IWUSR, show_level, set_level); - -static ssize_t -show_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t usb2_hardware_lpm_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct usb_device *udev = to_usb_device(dev); const char *p; @@ -471,9 +457,9 @@ show_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr, return sprintf(buf, "%s\n", p); } -static ssize_t -set_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t usb2_hardware_lpm_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { struct usb_device *udev = to_usb_device(dev); bool value; @@ -493,12 +479,59 @@ set_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr, return ret; } +static DEVICE_ATTR_RW(usb2_hardware_lpm); + +static ssize_t usb2_lpm_l1_timeout_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct usb_device *udev = to_usb_device(dev); + return sprintf(buf, "%d\n", udev->l1_params.timeout); +} + +static ssize_t usb2_lpm_l1_timeout_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct usb_device *udev = to_usb_device(dev); + u16 timeout; + + if (kstrtou16(buf, 0, &timeout)) + return -EINVAL; -static DEVICE_ATTR(usb2_hardware_lpm, S_IRUGO | S_IWUSR, show_usb2_hardware_lpm, - set_usb2_hardware_lpm); + udev->l1_params.timeout = timeout; + + return count; +} +static DEVICE_ATTR_RW(usb2_lpm_l1_timeout); + +static ssize_t usb2_lpm_besl_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct usb_device *udev = to_usb_device(dev); + return sprintf(buf, "%d\n", udev->l1_params.besl); +} + +static ssize_t usb2_lpm_besl_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct usb_device *udev = to_usb_device(dev); + u8 besl; + + if (kstrtou8(buf, 0, &besl) || besl > 15) + return -EINVAL; + + udev->l1_params.besl = besl; + + return count; +} +static DEVICE_ATTR_RW(usb2_lpm_besl); static struct attribute *usb2_hardware_lpm_attr[] = { &dev_attr_usb2_hardware_lpm.attr, + &dev_attr_usb2_lpm_l1_timeout.attr, + &dev_attr_usb2_lpm_besl.attr, NULL, }; static struct attribute_group usb2_hardware_lpm_attr_group = { @@ -550,7 +583,7 @@ static void remove_power_attributes(struct device *dev) /* Descriptor fields */ #define usb_descriptor_attr_le16(field, format_string) \ static ssize_t \ -show_##field(struct device *dev, struct device_attribute *attr, \ +field##_show(struct device *dev, struct device_attribute *attr, \ char *buf) \ { \ struct usb_device *udev; \ @@ -559,15 +592,15 @@ show_##field(struct device *dev, struct device_attribute *attr, \ return sprintf(buf, format_string, \ le16_to_cpu(udev->descriptor.field)); \ } \ -static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); +static DEVICE_ATTR_RO(field) -usb_descriptor_attr_le16(idVendor, "%04x\n") -usb_descriptor_attr_le16(idProduct, "%04x\n") -usb_descriptor_attr_le16(bcdDevice, "%04x\n") +usb_descriptor_attr_le16(idVendor, "%04x\n"); +usb_descriptor_attr_le16(idProduct, "%04x\n"); +usb_descriptor_attr_le16(bcdDevice, "%04x\n"); #define usb_descriptor_attr(field, format_string) \ static ssize_t \ -show_##field(struct device *dev, struct device_attribute *attr, \ +field##_show(struct device *dev, struct device_attribute *attr, \ char *buf) \ { \ struct usb_device *udev; \ @@ -575,34 +608,31 @@ show_##field(struct device *dev, struct device_attribute *attr, \ udev = to_usb_device(dev); \ return sprintf(buf, format_string, udev->descriptor.field); \ } \ -static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); - -usb_descriptor_attr(bDeviceClass, "%02x\n") -usb_descriptor_attr(bDeviceSubClass, "%02x\n") -usb_descriptor_attr(bDeviceProtocol, "%02x\n") -usb_descriptor_attr(bNumConfigurations, "%d\n") -usb_descriptor_attr(bMaxPacketSize0, "%d\n") +static DEVICE_ATTR_RO(field) +usb_descriptor_attr(bDeviceClass, "%02x\n"); +usb_descriptor_attr(bDeviceSubClass, "%02x\n"); +usb_descriptor_attr(bDeviceProtocol, "%02x\n"); +usb_descriptor_attr(bNumConfigurations, "%d\n"); +usb_descriptor_attr(bMaxPacketSize0, "%d\n"); /* show if the device is authorized (1) or not (0) */ -static ssize_t usb_dev_authorized_show(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t authorized_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct usb_device *usb_dev = to_usb_device(dev); return snprintf(buf, PAGE_SIZE, "%u\n", usb_dev->authorized); } - /* * Authorize a device to be used in the system * * Writing a 0 deauthorizes the device, writing a 1 authorizes it. */ -static ssize_t usb_dev_authorized_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t size) +static ssize_t authorized_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t size) { ssize_t result; struct usb_device *usb_dev = to_usb_device(dev); @@ -616,14 +646,12 @@ static ssize_t usb_dev_authorized_store(struct device *dev, result = usb_authorize_device(usb_dev); return result < 0? result : size; } - -static DEVICE_ATTR_IGNORE_LOCKDEP(authorized, 0644, - usb_dev_authorized_show, usb_dev_authorized_store); +static DEVICE_ATTR_IGNORE_LOCKDEP(authorized, S_IRUGO | S_IWUSR, + authorized_show, authorized_store); /* "Safely remove a device" */ -static ssize_t usb_remove_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t remove_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) { struct usb_device *udev = to_usb_device(dev); int rc = 0; @@ -640,7 +668,7 @@ static ssize_t usb_remove_store(struct device *dev, usb_unlock_device(udev); return rc; } -static DEVICE_ATTR_IGNORE_LOCKDEP(remove, 0200, NULL, usb_remove_store); +static DEVICE_ATTR_IGNORE_LOCKDEP(remove, S_IWUSR, NULL, remove_store); static struct attribute *dev_attrs[] = { @@ -799,7 +827,7 @@ void usb_remove_sysfs_dev_files(struct usb_device *udev) /* Interface Accociation Descriptor fields */ #define usb_intf_assoc_attr(field, format_string) \ static ssize_t \ -show_iad_##field(struct device *dev, struct device_attribute *attr, \ +iad_##field##_show(struct device *dev, struct device_attribute *attr, \ char *buf) \ { \ struct usb_interface *intf = to_usb_interface(dev); \ @@ -807,18 +835,18 @@ show_iad_##field(struct device *dev, struct device_attribute *attr, \ return sprintf(buf, format_string, \ intf->intf_assoc->field); \ } \ -static DEVICE_ATTR(iad_##field, S_IRUGO, show_iad_##field, NULL); +static DEVICE_ATTR_RO(iad_##field) -usb_intf_assoc_attr(bFirstInterface, "%02x\n") -usb_intf_assoc_attr(bInterfaceCount, "%02d\n") -usb_intf_assoc_attr(bFunctionClass, "%02x\n") -usb_intf_assoc_attr(bFunctionSubClass, "%02x\n") -usb_intf_assoc_attr(bFunctionProtocol, "%02x\n") +usb_intf_assoc_attr(bFirstInterface, "%02x\n"); +usb_intf_assoc_attr(bInterfaceCount, "%02d\n"); +usb_intf_assoc_attr(bFunctionClass, "%02x\n"); +usb_intf_assoc_attr(bFunctionSubClass, "%02x\n"); +usb_intf_assoc_attr(bFunctionProtocol, "%02x\n"); /* Interface fields */ #define usb_intf_attr(field, format_string) \ static ssize_t \ -show_##field(struct device *dev, struct device_attribute *attr, \ +field##_show(struct device *dev, struct device_attribute *attr, \ char *buf) \ { \ struct usb_interface *intf = to_usb_interface(dev); \ @@ -826,17 +854,17 @@ show_##field(struct device *dev, struct device_attribute *attr, \ return sprintf(buf, format_string, \ intf->cur_altsetting->desc.field); \ } \ -static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); +static DEVICE_ATTR_RO(field) -usb_intf_attr(bInterfaceNumber, "%02x\n") -usb_intf_attr(bAlternateSetting, "%2d\n") -usb_intf_attr(bNumEndpoints, "%02x\n") -usb_intf_attr(bInterfaceClass, "%02x\n") -usb_intf_attr(bInterfaceSubClass, "%02x\n") -usb_intf_attr(bInterfaceProtocol, "%02x\n") +usb_intf_attr(bInterfaceNumber, "%02x\n"); +usb_intf_attr(bAlternateSetting, "%2d\n"); +usb_intf_attr(bNumEndpoints, "%02x\n"); +usb_intf_attr(bInterfaceClass, "%02x\n"); +usb_intf_attr(bInterfaceSubClass, "%02x\n"); +usb_intf_attr(bInterfaceProtocol, "%02x\n"); -static ssize_t show_interface_string(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t interface_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_interface *intf; char *string; @@ -849,10 +877,10 @@ static ssize_t show_interface_string(struct device *dev, return 0; return sprintf(buf, "%s\n", string); } -static DEVICE_ATTR(interface, S_IRUGO, show_interface_string, NULL); +static DEVICE_ATTR_RO(interface); -static ssize_t show_modalias(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_interface *intf; struct usb_device *udev; @@ -875,10 +903,11 @@ static ssize_t show_modalias(struct device *dev, alt->desc.bInterfaceProtocol, alt->desc.bInterfaceNumber); } -static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL); +static DEVICE_ATTR_RO(modalias); -static ssize_t show_supports_autosuspend(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t supports_autosuspend_show(struct device *dev, + struct device_attribute *attr, + char *buf) { struct usb_interface *intf; struct usb_device *udev; @@ -898,7 +927,7 @@ static ssize_t show_supports_autosuspend(struct device *dev, return ret; } -static DEVICE_ATTR(supports_autosuspend, S_IRUGO, show_supports_autosuspend, NULL); +static DEVICE_ATTR_RO(supports_autosuspend); static struct attribute *intf_attrs[] = { &dev_attr_bInterfaceNumber.attr, diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 16927fa88fbd..c12bc790a6a7 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -7,6 +7,7 @@ #include <linux/usb.h> #include <linux/wait.h> #include <linux/usb/hcd.h> +#include <linux/scatterlist.h> #define to_urb(d) container_of(d, struct urb, kref) @@ -54,12 +55,12 @@ EXPORT_SYMBOL_GPL(usb_init_urb); * Creates an urb for the USB driver to use, initializes a few internal * structures, incrementes the usage counter, and returns a pointer to it. * - * If no memory is available, NULL is returned. - * * If the driver want to use this urb for interrupt, control, or bulk * endpoints, pass '0' as the number of iso packets. * * The driver must call usb_free_urb() when it is finished with the urb. + * + * Return: A pointer to the new urb, or %NULL if no memory is available. */ struct urb *usb_alloc_urb(int iso_packets, gfp_t mem_flags) { @@ -102,7 +103,7 @@ EXPORT_SYMBOL_GPL(usb_free_urb); * host controller driver. This allows proper reference counting to happen * for urbs. * - * A pointer to the urb with the incremented reference counter is returned. + * Return: A pointer to the urb with the incremented reference counter. */ struct urb *usb_get_urb(struct urb *urb) { @@ -199,13 +200,12 @@ EXPORT_SYMBOL_GPL(usb_unanchor_urb); * the particular kind of transfer, although they will not initialize * any transfer flags. * - * Successful submissions return 0; otherwise this routine returns a - * negative error number. If the submission is successful, the complete() - * callback from the URB will be called exactly once, when the USB core and - * Host Controller Driver (HCD) are finished with the URB. When the completion - * function is called, control of the URB is returned to the device - * driver which issued the request. The completion handler may then - * immediately free or reuse that URB. + * If the submission is successful, the complete() callback from the URB + * will be called exactly once, when the USB core and Host Controller Driver + * (HCD) are finished with the URB. When the completion function is called, + * control of the URB is returned to the device driver which issued the + * request. The completion handler may then immediately free or reuse that + * URB. * * With few exceptions, USB device drivers should never access URB fields * provided by usbcore or the HCD until its complete() is called. @@ -240,6 +240,9 @@ EXPORT_SYMBOL_GPL(usb_unanchor_urb); * that are standardized in the USB 2.0 specification. For bulk * endpoints, a synchronous usb_bulk_msg() call is available. * + * Return: + * 0 on successful submissions. A negative error number otherwise. + * * Request Queuing: * * URBs may be submitted to endpoints before previous ones complete, to @@ -413,6 +416,14 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) urb->iso_frame_desc[n].status = -EXDEV; urb->iso_frame_desc[n].actual_length = 0; } + } else if (urb->num_sgs && !urb->dev->bus->no_sg_constraint && + dev->speed != USB_SPEED_WIRELESS) { + struct scatterlist *sg; + int i; + + for_each_sg(urb->sg, sg, urb->num_sgs - 1, i) + if (sg->length % max) + return -EINVAL; } /* the I/O buffer must be mapped/unmapped, except when length=0 */ @@ -564,6 +575,9 @@ EXPORT_SYMBOL_GPL(usb_submit_urb); * particular, when a driver calls this routine, it must insure that the * completion handler cannot deallocate the URB. * + * Return: -EINPROGRESS on success. See description for other values on + * failure. + * * Unlinking and Endpoint Queues: * * [The behaviors and guarantees described below do not apply to virtual @@ -838,6 +852,8 @@ EXPORT_SYMBOL_GPL(usb_unlink_anchored_urbs); * * Call this is you want to be sure all an anchor's * URBs have finished + * + * Return: Non-zero if the anchor became unused. Zero on timeout. */ int usb_wait_anchor_empty_timeout(struct usb_anchor *anchor, unsigned int timeout) @@ -851,8 +867,11 @@ EXPORT_SYMBOL_GPL(usb_wait_anchor_empty_timeout); * usb_get_from_anchor - get an anchor's oldest urb * @anchor: the anchor whose urb you want * - * this will take the oldest urb from an anchor, + * This will take the oldest urb from an anchor, * unanchor and return it + * + * Return: The oldest urb from @anchor, or %NULL if @anchor has no + * urbs associated with it. */ struct urb *usb_get_from_anchor(struct usb_anchor *anchor) { @@ -901,7 +920,7 @@ EXPORT_SYMBOL_GPL(usb_scuttle_anchored_urbs); * usb_anchor_empty - is an anchor empty * @anchor: the anchor you want to query * - * returns 1 if the anchor has no urbs associated with it + * Return: 1 if the anchor has no urbs associated with it. */ int usb_anchor_empty(struct usb_anchor *anchor) { diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index b10da720f2b4..0a6ee2e70b25 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -68,6 +68,8 @@ MODULE_PARM_DESC(autosuspend, "default autosuspend delay"); * @alt_num: alternate interface setting number to search for. * * Search the configuration's interface cache for the given alt setting. + * + * Return: The alternate setting, if found. %NULL otherwise. */ struct usb_host_interface *usb_find_alt_setting( struct usb_host_config *config, @@ -103,8 +105,7 @@ EXPORT_SYMBOL_GPL(usb_find_alt_setting); * @ifnum: the desired interface * * This walks the device descriptor for the currently active configuration - * and returns a pointer to the interface with that particular interface - * number, or null. + * to find the interface object with the particular interface number. * * Note that configuration descriptors are not required to assign interface * numbers sequentially, so that it would be incorrect to assume that @@ -115,6 +116,9 @@ EXPORT_SYMBOL_GPL(usb_find_alt_setting); * * Don't call this function unless you are bound to one of the interfaces * on this device or you have locked the device! + * + * Return: A pointer to the interface that has @ifnum as interface number, + * if found. %NULL otherwise. */ struct usb_interface *usb_ifnum_to_if(const struct usb_device *dev, unsigned ifnum) @@ -139,8 +143,7 @@ EXPORT_SYMBOL_GPL(usb_ifnum_to_if); * @altnum: the desired alternate setting number * * This searches the altsetting array of the specified interface for - * an entry with the correct bAlternateSetting value and returns a pointer - * to that entry, or null. + * an entry with the correct bAlternateSetting value. * * Note that altsettings need not be stored sequentially by number, so * it would be incorrect to assume that the first altsetting entry in @@ -149,6 +152,9 @@ EXPORT_SYMBOL_GPL(usb_ifnum_to_if); * * Don't call this function unless you are bound to the intf interface * or you have locked the device! + * + * Return: A pointer to the entry of the altsetting array of @intf that + * has @altnum as the alternate setting number. %NULL if not found. */ struct usb_host_interface *usb_altnum_to_altsetting( const struct usb_interface *intf, @@ -191,6 +197,8 @@ static int __find_interface(struct device *dev, void *data) * This walks the bus device list and returns a pointer to the interface * with the matching minor and driver. Note, this only works for devices * that share the USB major number. + * + * Return: A pointer to the interface with the matching major and @minor. */ struct usb_interface *usb_find_interface(struct usb_driver *drv, int minor) { @@ -209,6 +217,39 @@ struct usb_interface *usb_find_interface(struct usb_driver *drv, int minor) } EXPORT_SYMBOL_GPL(usb_find_interface); +struct each_dev_arg { + void *data; + int (*fn)(struct usb_device *, void *); +}; + +static int __each_dev(struct device *dev, void *data) +{ + struct each_dev_arg *arg = (struct each_dev_arg *)data; + + /* There are struct usb_interface on the same bus, filter them out */ + if (!is_usb_device(dev)) + return 0; + + return arg->fn(container_of(dev, struct usb_device, dev), arg->data); +} + +/** + * usb_for_each_dev - iterate over all USB devices in the system + * @data: data pointer that will be handed to the callback function + * @fn: callback function to be called for each USB device + * + * Iterate over all USB devices and call @fn for each, passing it @data. If it + * returns anything other than 0, we break the iteration prematurely and return + * that value. + */ +int usb_for_each_dev(void *data, int (*fn)(struct usb_device *, void *)) +{ + struct each_dev_arg arg = {data, fn}; + + return bus_for_each_dev(&usb_bus_type, NULL, &arg, __each_dev); +} +EXPORT_SYMBOL_GPL(usb_for_each_dev); + /** * usb_release_dev - free a usb device structure when all users of it are finished. * @dev: device that's been disconnected @@ -357,6 +398,9 @@ static unsigned usb_bus_is_wusb(struct usb_bus *bus) * controllers) should ever call this. * * This call may not be used in a non-sleeping context. + * + * Return: On success, a pointer to the allocated usb device. %NULL on + * failure. */ struct usb_device *usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) @@ -468,7 +512,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, * their probe() methods, when they bind to an interface, and release * them by calling usb_put_dev(), in their disconnect() methods. * - * A pointer to the device with the incremented reference counter is returned. + * Return: A pointer to the device with the incremented reference counter. */ struct usb_device *usb_get_dev(struct usb_device *dev) { @@ -502,8 +546,7 @@ EXPORT_SYMBOL_GPL(usb_put_dev); * their probe() methods, when they bind to an interface, and release * them by calling usb_put_intf(), in their disconnect() methods. * - * A pointer to the interface with the incremented reference counter is - * returned. + * Return: A pointer to the interface with the incremented reference counter. */ struct usb_interface *usb_get_intf(struct usb_interface *intf) { @@ -556,7 +599,7 @@ EXPORT_SYMBOL_GPL(usb_put_intf); * disconnect; in some drivers (such as usb-storage) the disconnect() * or suspend() method will block waiting for a device reset to complete. * - * Returns a negative error code for failure, otherwise 0. + * Return: A negative error code for failure, otherwise 0. */ int usb_lock_device_for_reset(struct usb_device *udev, const struct usb_interface *iface) @@ -595,14 +638,15 @@ EXPORT_SYMBOL_GPL(usb_lock_device_for_reset); * usb_get_current_frame_number - return current bus frame number * @dev: the device whose bus is being queried * - * Returns the current frame number for the USB host controller - * used with the given USB device. This can be used when scheduling + * Return: The current frame number for the USB host controller used + * with the given USB device. This can be used when scheduling * isochronous requests. * - * Note that different kinds of host controller have different - * "scheduling horizons". While one type might support scheduling only - * 32 frames into the future, others could support scheduling up to - * 1024 frames into the future. + * Note: Different kinds of host controller have different "scheduling + * horizons". While one type might support scheduling only 32 frames + * into the future, others could support scheduling up to 1024 frames + * into the future. + * */ int usb_get_current_frame_number(struct usb_device *dev) { @@ -652,11 +696,12 @@ EXPORT_SYMBOL_GPL(__usb_get_extra_descriptor); * @mem_flags: affect whether allocation may block * @dma: used to return DMA address of buffer * - * Return value is either null (indicating no buffer could be allocated), or - * the cpu-space pointer to a buffer that may be used to perform DMA to the + * Return: Either null (indicating no buffer could be allocated), or the + * cpu-space pointer to a buffer that may be used to perform DMA to the * specified device. Such cpu-space buffers are returned along with the DMA * address (through the pointer provided). * + * Note: * These buffers are used with URB_NO_xxx_DMA_MAP set in urb->transfer_flags * to avoid behaviors like using "DMA bounce buffers", or thrashing IOMMU * hardware during URB completion/resubmit. The implementation varies between @@ -702,17 +747,18 @@ EXPORT_SYMBOL_GPL(usb_free_coherent); * usb_buffer_map - create DMA mapping(s) for an urb * @urb: urb whose transfer_buffer/setup_packet will be mapped * - * Return value is either null (indicating no buffer could be mapped), or - * the parameter. URB_NO_TRANSFER_DMA_MAP is - * added to urb->transfer_flags if the operation succeeds. If the device - * is connected to this system through a non-DMA controller, this operation - * always succeeds. + * URB_NO_TRANSFER_DMA_MAP is added to urb->transfer_flags if the operation + * succeeds. If the device is connected to this system through a non-DMA + * controller, this operation always succeeds. * * This call would normally be used for an urb which is reused, perhaps * as the target of a large periodic transfer, with usb_buffer_dmasync() * calls to synchronize memory and dma state. * * Reverse the effect of this call with usb_buffer_unmap(). + * + * Return: Either %NULL (indicating no buffer could be mapped), or @urb. + * */ #if 0 struct urb *usb_buffer_map(struct urb *urb) @@ -817,9 +863,10 @@ EXPORT_SYMBOL_GPL(usb_buffer_unmap); * @sg: the scatterlist to map * @nents: the number of entries in the scatterlist * - * Return value is either < 0 (indicating no buffers could be mapped), or - * the number of DMA mapping array entries in the scatterlist. + * Return: Either < 0 (indicating no buffers could be mapped), or the + * number of DMA mapping array entries in the scatterlist. * + * Note: * The caller is responsible for placing the resulting DMA addresses from * the scatterlist into URB transfer buffer pointers, and for setting the * URB_NO_TRANSFER_DMA_MAP transfer flag in each of those URBs. diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 757aa18027d0..f969ea266acb 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -1,6 +1,7 @@ config USB_DWC3 tristate "DesignWare USB3 DRD Core Support" - depends on (USB || USB_GADGET) && GENERIC_HARDIRQS + depends on (USB || USB_GADGET) && GENERIC_HARDIRQS && HAS_DMA + depends on EXTCON select USB_XHCI_PLATFORM if USB_SUPPORT && USB_XHCI_HCD help Say Y or M here if your system has a Dual Role SuperSpeed @@ -40,6 +41,38 @@ config USB_DWC3_DUAL_ROLE endchoice +comment "Platform Glue Driver Support" + +config USB_DWC3_OMAP + tristate "Texas Instruments OMAP5 and similar Platforms" + depends on EXTCON + default USB_DWC3 + help + Some platforms from Texas Instruments like OMAP5, DRA7xxx and + AM437x use this IP for USB2/3 functionality. + + Say 'Y' or 'M' here if you have one such device + +config USB_DWC3_EXYNOS + tristate "Samsung Exynos Platform" + default USB_DWC3 + help + Recent Exynos5 SoCs ship with one DesignWare Core USB3 IP inside, + say 'Y' or 'M' if you have one such device. + +config USB_DWC3_PCI + tristate "PCIe-based Platforms" + depends on PCI + default USB_DWC3 + help + If you're using the DesignWare Core IP with a PCIe, please say + 'Y' or 'M' here. + + One such PCIe-based platform is Synopsys' PCIe HAPS model of + this IP. + +comment "Debugging features" + config USB_DWC3_DEBUG bool "Enable Debugging Messages" help diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 0c7ac92582be..dd1760145c46 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -27,15 +27,8 @@ endif # the entire driver (with all its glue layers) on several architectures # and make sure it compiles fine. This will also help with allmodconfig # and allyesconfig builds. -# -# The only exception is the PCI glue layer, but that's only because -# PCI doesn't provide nops if CONFIG_PCI isn't enabled. ## -obj-$(CONFIG_USB_DWC3) += dwc3-omap.o -obj-$(CONFIG_USB_DWC3) += dwc3-exynos.o - -ifneq ($(CONFIG_PCI),) - obj-$(CONFIG_USB_DWC3) += dwc3-pci.o -endif - +obj-$(CONFIG_USB_DWC3_OMAP) += dwc3-omap.o +obj-$(CONFIG_USB_DWC3_EXYNOS) += dwc3-exynos.o +obj-$(CONFIG_USB_DWC3_PCI) += dwc3-pci.o diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index c35d49d39b76..474162e9d01d 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -6,34 +6,17 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/module.h> @@ -50,20 +33,18 @@ #include <linux/dma-mapping.h> #include <linux/of.h> -#include <linux/usb/otg.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> +#include <linux/usb/of.h> +#include <linux/usb/otg.h> +#include "platform_data.h" #include "core.h" #include "gadget.h" #include "io.h" #include "debug.h" -static char *maximum_speed = "super"; -module_param(maximum_speed, charp, 0); -MODULE_PARM_DESC(maximum_speed, "Maximum supported speed."); - /* -------------------------------------------------------------------------- */ void dwc3_set_mode(struct dwc3 *dwc, u32 mode) @@ -236,7 +217,7 @@ static int dwc3_event_buffers_setup(struct dwc3 *dwc) dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), upper_32_bits(evt->dma)); dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), - evt->length & 0xffff); + DWC3_GEVNTSIZ_SIZE(evt->length)); dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0); } @@ -255,7 +236,8 @@ static void dwc3_event_buffers_cleanup(struct dwc3 *dwc) dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 0); dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 0); - dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), 0); + dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), DWC3_GEVNTSIZ_INTMASK + | DWC3_GEVNTSIZ_SIZE(0)); dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0); } } @@ -367,18 +349,17 @@ static void dwc3_core_exit(struct dwc3 *dwc) static int dwc3_probe(struct platform_device *pdev) { - struct device_node *node = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct dwc3_platform_data *pdata = dev_get_platdata(dev); + struct device_node *node = dev->of_node; struct resource *res; struct dwc3 *dwc; - struct device *dev = &pdev->dev; int ret = -ENOMEM; void __iomem *regs; void *mem; - u8 mode; - mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); if (!mem) { dev_err(dev, "not enough memory\n"); @@ -402,38 +383,32 @@ static int dwc3_probe(struct platform_device *pdev) dev_err(dev, "missing memory resource\n"); return -ENODEV; } - dwc->xhci_resources[0].start = res->start; - dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + - DWC3_XHCI_REGS_END; - dwc->xhci_resources[0].flags = res->flags; - dwc->xhci_resources[0].name = res->name; - - /* - * Request memory region but exclude xHCI regs, - * since it will be requested by the xhci-plat driver. - */ - res = devm_request_mem_region(dev, res->start + DWC3_GLOBALS_REGS_START, - resource_size(res) - DWC3_GLOBALS_REGS_START, - dev_name(dev)); - if (!res) { - dev_err(dev, "can't request mem region\n"); - return -ENOMEM; - } - - regs = devm_ioremap_nocache(dev, res->start, resource_size(res)); - if (!regs) { - dev_err(dev, "ioremap failed\n"); - return -ENOMEM; - } if (node) { + dwc->maximum_speed = of_usb_get_maximum_speed(node); + dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0); dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1); + + dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); + dwc->dr_mode = of_usb_get_dr_mode(node); + } else if (pdata) { + dwc->maximum_speed = pdata->maximum_speed; + + dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); + + dwc->needs_fifo_resize = pdata->tx_fifo_resize; + dwc->dr_mode = pdata->dr_mode; } else { dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); } + /* default to superspeed if no maximum_speed passed */ + if (dwc->maximum_speed == USB_SPEED_UNKNOWN) + dwc->maximum_speed = USB_SPEED_SUPER; + if (IS_ERR(dwc->usb2_phy)) { ret = PTR_ERR(dwc->usb2_phy); @@ -450,7 +425,7 @@ static int dwc3_probe(struct platform_device *pdev) } if (IS_ERR(dwc->usb3_phy)) { - ret = PTR_ERR(dwc->usb2_phy); + ret = PTR_ERR(dwc->usb3_phy); /* * if -ENXIO is returned, it means PHY layer wasn't @@ -464,6 +439,22 @@ static int dwc3_probe(struct platform_device *pdev) return -EPROBE_DEFER; } + dwc->xhci_resources[0].start = res->start; + dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + + DWC3_XHCI_REGS_END; + dwc->xhci_resources[0].flags = res->flags; + dwc->xhci_resources[0].name = res->name; + + res->start += DWC3_GLOBALS_REGS_START; + + /* + * Request memory region but exclude xHCI regs, + * since it will be requested by the xhci-plat driver. + */ + regs = devm_ioremap_resource(dev, res); + if (IS_ERR(regs)) + return PTR_ERR(regs); + usb_phy_set_suspend(dwc->usb2_phy, 0); usb_phy_set_suspend(dwc->usb3_phy, 0); @@ -478,19 +469,6 @@ static int dwc3_probe(struct platform_device *pdev) dev->dma_parms = dev->parent->dma_parms; dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask); - if (!strncmp("super", maximum_speed, 5)) - dwc->maximum_speed = DWC3_DCFG_SUPERSPEED; - else if (!strncmp("high", maximum_speed, 4)) - dwc->maximum_speed = DWC3_DCFG_HIGHSPEED; - else if (!strncmp("full", maximum_speed, 4)) - dwc->maximum_speed = DWC3_DCFG_FULLSPEED1; - else if (!strncmp("low", maximum_speed, 3)) - dwc->maximum_speed = DWC3_DCFG_LOWSPEED; - else - dwc->maximum_speed = DWC3_DCFG_SUPERSPEED; - - dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); - pm_runtime_enable(dev); pm_runtime_get_sync(dev); pm_runtime_forbid(dev); @@ -517,14 +495,15 @@ static int dwc3_probe(struct platform_device *pdev) } if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) - mode = DWC3_MODE_HOST; + dwc->dr_mode = USB_DR_MODE_HOST; else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) - mode = DWC3_MODE_DEVICE; - else - mode = DWC3_MODE_DRD; + dwc->dr_mode = USB_DR_MODE_PERIPHERAL; + + if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) + dwc->dr_mode = USB_DR_MODE_OTG; - switch (mode) { - case DWC3_MODE_DEVICE: + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); ret = dwc3_gadget_init(dwc); if (ret) { @@ -532,7 +511,7 @@ static int dwc3_probe(struct platform_device *pdev) goto err2; } break; - case DWC3_MODE_HOST: + case USB_DR_MODE_HOST: dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST); ret = dwc3_host_init(dwc); if (ret) { @@ -540,7 +519,7 @@ static int dwc3_probe(struct platform_device *pdev) goto err2; } break; - case DWC3_MODE_DRD: + case USB_DR_MODE_OTG: dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG); ret = dwc3_host_init(dwc); if (ret) { @@ -555,10 +534,9 @@ static int dwc3_probe(struct platform_device *pdev) } break; default: - dev_err(dev, "Unsupported mode of operation %d\n", mode); + dev_err(dev, "Unsupported mode of operation %d\n", dwc->dr_mode); goto err2; } - dwc->mode = mode; ret = dwc3_debugfs_init(dwc); if (ret) { @@ -571,14 +549,14 @@ static int dwc3_probe(struct platform_device *pdev) return 0; err3: - switch (mode) { - case DWC3_MODE_DEVICE: + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: dwc3_gadget_exit(dwc); break; - case DWC3_MODE_HOST: + case USB_DR_MODE_HOST: dwc3_host_exit(dwc); break; - case DWC3_MODE_DRD: + case USB_DR_MODE_OTG: dwc3_host_exit(dwc); dwc3_gadget_exit(dwc); break; @@ -611,14 +589,14 @@ static int dwc3_remove(struct platform_device *pdev) dwc3_debugfs_exit(dwc); - switch (dwc->mode) { - case DWC3_MODE_DEVICE: + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: dwc3_gadget_exit(dwc); break; - case DWC3_MODE_HOST: + case USB_DR_MODE_HOST: dwc3_host_exit(dwc); break; - case DWC3_MODE_DRD: + case USB_DR_MODE_OTG: dwc3_host_exit(dwc); dwc3_gadget_exit(dwc); break; @@ -642,12 +620,12 @@ static int dwc3_prepare(struct device *dev) spin_lock_irqsave(&dwc->lock, flags); - switch (dwc->mode) { - case DWC3_MODE_DEVICE: - case DWC3_MODE_DRD: + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + case USB_DR_MODE_OTG: dwc3_gadget_prepare(dwc); /* FALLTHROUGH */ - case DWC3_MODE_HOST: + case USB_DR_MODE_HOST: default: dwc3_event_buffers_cleanup(dwc); break; @@ -665,12 +643,12 @@ static void dwc3_complete(struct device *dev) spin_lock_irqsave(&dwc->lock, flags); - switch (dwc->mode) { - case DWC3_MODE_DEVICE: - case DWC3_MODE_DRD: + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + case USB_DR_MODE_OTG: dwc3_gadget_complete(dwc); /* FALLTHROUGH */ - case DWC3_MODE_HOST: + case USB_DR_MODE_HOST: default: dwc3_event_buffers_setup(dwc); break; @@ -686,12 +664,12 @@ static int dwc3_suspend(struct device *dev) spin_lock_irqsave(&dwc->lock, flags); - switch (dwc->mode) { - case DWC3_MODE_DEVICE: - case DWC3_MODE_DRD: + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + case USB_DR_MODE_OTG: dwc3_gadget_suspend(dwc); /* FALLTHROUGH */ - case DWC3_MODE_HOST: + case USB_DR_MODE_HOST: default: /* do nothing */ break; @@ -719,12 +697,12 @@ static int dwc3_resume(struct device *dev) dwc3_writel(dwc->regs, DWC3_GCTL, dwc->gctl); - switch (dwc->mode) { - case DWC3_MODE_DEVICE: - case DWC3_MODE_DRD: + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + case USB_DR_MODE_OTG: dwc3_gadget_resume(dwc); /* FALLTHROUGH */ - case DWC3_MODE_HOST: + case USB_DR_MODE_HOST: default: /* do nothing */ break; @@ -754,6 +732,9 @@ static const struct dev_pm_ops dwc3_dev_pm_ops = { #ifdef CONFIG_OF static const struct of_device_id of_dwc3_match[] = { { + .compatible = "snps,dwc3" + }, + { .compatible = "synopsys,dwc3" }, { }, @@ -775,5 +756,5 @@ module_platform_driver(dwc3_driver); MODULE_ALIAS("platform:dwc3"); MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); -MODULE_LICENSE("Dual BSD/GPL"); +MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver"); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index b69d322e3cab..f8af8d44af85 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -6,34 +6,14 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #ifndef __DRIVERS_USB_DWC3_CORE_H @@ -49,6 +29,7 @@ #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> +#include <linux/usb/otg.h> /* Global constants */ #define DWC3_EP0_BOUNCE_SIZE 512 @@ -194,6 +175,10 @@ #define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff) #define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000) +/* Global Event Size Registers */ +#define DWC3_GEVNTSIZ_INTMASK (1 << 31) +#define DWC3_GEVNTSIZ_SIZE(n) ((n) & 0xffff) + /* Global HWPARAMS1 Register */ #define DWC3_GHWPARAMS1_EN_PWROPT(n) (((n) & (3 << 24)) >> 24) #define DWC3_GHWPARAMS1_EN_PWROPT_NO 0 @@ -207,7 +192,6 @@ #define DWC3_MAX_HIBER_SCRATCHBUFS 15 /* Device Configuration Register */ -#define DWC3_DCFG_LPM_CAP (1 << 22) #define DWC3_DCFG_DEVADDR(addr) ((addr) << 3) #define DWC3_DCFG_DEVADDR_MASK DWC3_DCFG_DEVADDR(0x7f) @@ -367,7 +351,6 @@ struct dwc3_trb; /** * struct dwc3_event_buffer - Software event buffer representation - * @list: a list of event buffers * @buf: _THE_ buffer * @length: size of this buffer * @lpos: event offset @@ -415,7 +398,7 @@ struct dwc3_event_buffer { * @number: endpoint number (1 - 15) * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK * @resource_index: Resource transfer index - * @interval: the intervall on which the ISOC transfer is started + * @interval: the interval on which the ISOC transfer is started * @name: a human readable name e.g. ep1out-bulk * @direction: true for TX, false for RX * @stream_capable: true when streams are enabled @@ -566,11 +549,6 @@ struct dwc3_hwparams { /* HWPARAMS0 */ #define DWC3_MODE(n) ((n) & 0x7) -#define DWC3_MODE_DEVICE 0 -#define DWC3_MODE_HOST 1 -#define DWC3_MODE_DRD 2 -#define DWC3_MODE_HUB 3 - #define DWC3_MDWIDTH(n) (((n) & 0xff00) >> 8) /* HWPARAMS1 */ @@ -632,7 +610,7 @@ struct dwc3_scratchpad_array { * @u1u2: only used on revisions <1.83a for workaround * @maximum_speed: maximum speed requested (mainly for testing purposes) * @revision: revision register contents - * @mode: mode of operation + * @dr_mode: requested mode of operation * @usb2_phy: pointer to USB2 PHY * @usb3_phy: pointer to USB3 PHY * @dcfg: saved contents of DCFG register @@ -690,6 +668,8 @@ struct dwc3 { void __iomem *regs; size_t regs_size; + enum usb_dr_mode dr_mode; + /* used for suspend/resume */ u32 dcfg; u32 gctl; @@ -698,7 +678,6 @@ struct dwc3 { u32 u1u2; u32 maximum_speed; u32 revision; - u32 mode; #define DWC3_REVISION_173A 0x5533173a #define DWC3_REVISION_175A 0x5533175a @@ -759,8 +738,8 @@ struct dwc3 { struct dwc3_event_type { u32 is_devspec:1; - u32 type:6; - u32 reserved8_31:25; + u32 type:7; + u32 reserved8_31:24; } __packed; #define DWC3_DEPEVT_XFERCOMPLETE 0x01 diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index 5894ee8222af..fceb39dc4bba 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -6,34 +6,14 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #include "core.h" diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 9e9f122162f2..9ac37fe1b6a7 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -6,34 +6,14 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #include <linux/kernel.h> diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index 929e7dd6e58b..2f2e88a3a11a 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -6,10 +6,14 @@ * * Author: Anton Tikhomirov <av.tikhomirov@samsung.com> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #include <linux/module.h> @@ -20,7 +24,7 @@ #include <linux/dma-mapping.h> #include <linux/clk.h> #include <linux/usb/otg.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_gen_xceiv.h> #include <linux/of.h> #include <linux/of_platform.h> @@ -34,13 +38,13 @@ struct dwc3_exynos { static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos) { - struct nop_usb_xceiv_platform_data pdata; + struct usb_phy_gen_xceiv_platform_data pdata; struct platform_device *pdev; int ret; memset(&pdata, 0x00, sizeof(pdata)); - pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO); + pdev = platform_device_alloc("usb_phy_gen_xceiv", PLATFORM_DEVID_AUTO); if (!pdev) return -ENOMEM; @@ -51,7 +55,7 @@ static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos) if (ret) goto err1; - pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO); + pdev = platform_device_alloc("usb_phy_gen_xceiv", PLATFORM_DEVID_AUTO); if (!pdev) { ret = -ENOMEM; goto err1; @@ -164,9 +168,9 @@ static int dwc3_exynos_remove(struct platform_device *pdev) { struct dwc3_exynos *exynos = platform_get_drvdata(pdev); + device_for_each_child(&pdev->dev, NULL, dwc3_exynos_remove_child); platform_device_unregister(exynos->usb2_phy); platform_device_unregister(exynos->usb3_phy); - device_for_each_child(&pdev->dev, NULL, dwc3_exynos_remove_child); clk_disable_unprepare(exynos->clk); @@ -228,5 +232,5 @@ module_platform_driver(dwc3_exynos_driver); MODULE_ALIAS("platform:exynos-dwc3"); MODULE_AUTHOR("Anton Tikhomirov <av.tikhomirov@samsung.com>"); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("DesignWare USB3 EXYNOS Glue Layer"); diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 34638b92500d..7f7ea62e961b 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -6,34 +6,14 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #include <linux/module.h> @@ -43,13 +23,15 @@ #include <linux/spinlock.h> #include <linux/platform_device.h> #include <linux/platform_data/dwc3-omap.h> -#include <linux/usb/dwc3-omap.h> #include <linux/pm_runtime.h> #include <linux/dma-mapping.h> #include <linux/ioport.h> #include <linux/io.h> #include <linux/of.h> #include <linux/of_platform.h> +#include <linux/extcon.h> +#include <linux/extcon/of_extcon.h> +#include <linux/regulator/consumer.h> #include <linux/usb/otg.h> @@ -61,21 +43,46 @@ #define USBOTGSS_REVISION 0x0000 #define USBOTGSS_SYSCONFIG 0x0010 #define USBOTGSS_IRQ_EOI 0x0020 +#define USBOTGSS_EOI_OFFSET 0x0008 #define USBOTGSS_IRQSTATUS_RAW_0 0x0024 #define USBOTGSS_IRQSTATUS_0 0x0028 #define USBOTGSS_IRQENABLE_SET_0 0x002c #define USBOTGSS_IRQENABLE_CLR_0 0x0030 -#define USBOTGSS_IRQSTATUS_RAW_1 0x0034 -#define USBOTGSS_IRQSTATUS_1 0x0038 -#define USBOTGSS_IRQENABLE_SET_1 0x003c -#define USBOTGSS_IRQENABLE_CLR_1 0x0040 +#define USBOTGSS_IRQ0_OFFSET 0x0004 +#define USBOTGSS_IRQSTATUS_RAW_1 0x0030 +#define USBOTGSS_IRQSTATUS_1 0x0034 +#define USBOTGSS_IRQENABLE_SET_1 0x0038 +#define USBOTGSS_IRQENABLE_CLR_1 0x003c +#define USBOTGSS_IRQSTATUS_RAW_2 0x0040 +#define USBOTGSS_IRQSTATUS_2 0x0044 +#define USBOTGSS_IRQENABLE_SET_2 0x0048 +#define USBOTGSS_IRQENABLE_CLR_2 0x004c +#define USBOTGSS_IRQSTATUS_RAW_3 0x0050 +#define USBOTGSS_IRQSTATUS_3 0x0054 +#define USBOTGSS_IRQENABLE_SET_3 0x0058 +#define USBOTGSS_IRQENABLE_CLR_3 0x005c +#define USBOTGSS_IRQSTATUS_EOI_MISC 0x0030 +#define USBOTGSS_IRQSTATUS_RAW_MISC 0x0034 +#define USBOTGSS_IRQSTATUS_MISC 0x0038 +#define USBOTGSS_IRQENABLE_SET_MISC 0x003c +#define USBOTGSS_IRQENABLE_CLR_MISC 0x0040 +#define USBOTGSS_IRQMISC_OFFSET 0x03fc #define USBOTGSS_UTMI_OTG_CTRL 0x0080 #define USBOTGSS_UTMI_OTG_STATUS 0x0084 +#define USBOTGSS_UTMI_OTG_OFFSET 0x0480 +#define USBOTGSS_TXFIFO_DEPTH 0x0508 +#define USBOTGSS_RXFIFO_DEPTH 0x050c #define USBOTGSS_MMRAM_OFFSET 0x0100 #define USBOTGSS_FLADJ 0x0104 #define USBOTGSS_DEBUG_CFG 0x0108 #define USBOTGSS_DEBUG_DATA 0x010c +#define USBOTGSS_DEV_EBC_EN 0x0110 +#define USBOTGSS_DEBUG_OFFSET 0x0600 +/* REVISION REGISTER */ +#define USBOTGSS_REVISION_XMAJOR(reg) ((reg >> 8) & 0x7) +#define USBOTGSS_REVISION_XMAJOR1 1 +#define USBOTGSS_REVISION_XMAJOR2 2 /* SYSCONFIG REGISTER */ #define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16) @@ -85,17 +92,17 @@ /* IRQS0 BITS */ #define USBOTGSS_IRQO_COREIRQ_ST (1 << 0) -/* IRQ1 BITS */ -#define USBOTGSS_IRQ1_DMADISABLECLR (1 << 17) -#define USBOTGSS_IRQ1_OEVT (1 << 16) -#define USBOTGSS_IRQ1_DRVVBUS_RISE (1 << 13) -#define USBOTGSS_IRQ1_CHRGVBUS_RISE (1 << 12) -#define USBOTGSS_IRQ1_DISCHRGVBUS_RISE (1 << 11) -#define USBOTGSS_IRQ1_IDPULLUP_RISE (1 << 8) -#define USBOTGSS_IRQ1_DRVVBUS_FALL (1 << 5) -#define USBOTGSS_IRQ1_CHRGVBUS_FALL (1 << 4) -#define USBOTGSS_IRQ1_DISCHRGVBUS_FALL (1 << 3) -#define USBOTGSS_IRQ1_IDPULLUP_FALL (1 << 0) +/* IRQMISC BITS */ +#define USBOTGSS_IRQMISC_DMADISABLECLR (1 << 17) +#define USBOTGSS_IRQMISC_OEVT (1 << 16) +#define USBOTGSS_IRQMISC_DRVVBUS_RISE (1 << 13) +#define USBOTGSS_IRQMISC_CHRGVBUS_RISE (1 << 12) +#define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE (1 << 11) +#define USBOTGSS_IRQMISC_IDPULLUP_RISE (1 << 8) +#define USBOTGSS_IRQMISC_DRVVBUS_FALL (1 << 5) +#define USBOTGSS_IRQMISC_CHRGVBUS_FALL (1 << 4) +#define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL (1 << 3) +#define USBOTGSS_IRQMISC_IDPULLUP_FALL (1 << 0) /* UTMI_OTG_CTRL REGISTER */ #define USBOTGSS_UTMI_OTG_CTRL_DRVVBUS (1 << 5) @@ -122,11 +129,29 @@ struct dwc3_omap { void __iomem *base; u32 utmi_otg_status; + u32 utmi_otg_offset; + u32 irqmisc_offset; + u32 irq_eoi_offset; + u32 debug_offset; + u32 irq0_offset; + u32 revision; u32 dma_status:1; + + struct extcon_specific_cable_nb extcon_vbus_dev; + struct extcon_specific_cable_nb extcon_id_dev; + struct notifier_block vbus_nb; + struct notifier_block id_nb; + + struct regulator *vbus_reg; }; -static struct dwc3_omap *_omap; +enum omap_dwc3_vbus_id_status { + OMAP_DWC3_ID_FLOAT, + OMAP_DWC3_ID_GROUND, + OMAP_DWC3_VBUS_OFF, + OMAP_DWC3_VBUS_VALID, +}; static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset) { @@ -138,59 +163,117 @@ static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value) writel(value, base + offset); } -int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) +static u32 dwc3_omap_read_utmi_status(struct dwc3_omap *omap) { - u32 val; - struct dwc3_omap *omap = _omap; + return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS + + omap->utmi_otg_offset); +} + +static void dwc3_omap_write_utmi_status(struct dwc3_omap *omap, u32 value) +{ + dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS + + omap->utmi_otg_offset, value); + +} + +static u32 dwc3_omap_read_irq0_status(struct dwc3_omap *omap) +{ + return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_0 - + omap->irq0_offset); +} + +static void dwc3_omap_write_irq0_status(struct dwc3_omap *omap, u32 value) +{ + dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 - + omap->irq0_offset, value); + +} + +static u32 dwc3_omap_read_irqmisc_status(struct dwc3_omap *omap) +{ + return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_MISC + + omap->irqmisc_offset); +} + +static void dwc3_omap_write_irqmisc_status(struct dwc3_omap *omap, u32 value) +{ + dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC + + omap->irqmisc_offset, value); + +} + +static void dwc3_omap_write_irqmisc_set(struct dwc3_omap *omap, u32 value) +{ + dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC + + omap->irqmisc_offset, value); + +} - if (!omap) - return -EPROBE_DEFER; +static void dwc3_omap_write_irq0_set(struct dwc3_omap *omap, u32 value) +{ + dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 - + omap->irq0_offset, value); +} + +static void dwc3_omap_set_mailbox(struct dwc3_omap *omap, + enum omap_dwc3_vbus_id_status status) +{ + int ret; + u32 val; switch (status) { case OMAP_DWC3_ID_GROUND: dev_dbg(omap->dev, "ID GND\n"); - val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + if (omap->vbus_reg) { + ret = regulator_enable(omap->vbus_reg); + if (ret) { + dev_dbg(omap->dev, "regulator enable failed\n"); + return; + } + } + + val = dwc3_omap_read_utmi_status(omap); val &= ~(USBOTGSS_UTMI_OTG_STATUS_IDDIG | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID | USBOTGSS_UTMI_OTG_STATUS_SESSEND); val |= USBOTGSS_UTMI_OTG_STATUS_SESSVALID | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT; - dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); + dwc3_omap_write_utmi_status(omap, val); break; case OMAP_DWC3_VBUS_VALID: dev_dbg(omap->dev, "VBUS Connect\n"); - val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + val = dwc3_omap_read_utmi_status(omap); val &= ~USBOTGSS_UTMI_OTG_STATUS_SESSEND; val |= USBOTGSS_UTMI_OTG_STATUS_IDDIG | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID | USBOTGSS_UTMI_OTG_STATUS_SESSVALID | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT; - dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); + dwc3_omap_write_utmi_status(omap, val); break; case OMAP_DWC3_ID_FLOAT: + if (omap->vbus_reg) + regulator_disable(omap->vbus_reg); + case OMAP_DWC3_VBUS_OFF: dev_dbg(omap->dev, "VBUS Disconnect\n"); - val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + val = dwc3_omap_read_utmi_status(omap); val &= ~(USBOTGSS_UTMI_OTG_STATUS_SESSVALID | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT); val |= USBOTGSS_UTMI_OTG_STATUS_SESSEND | USBOTGSS_UTMI_OTG_STATUS_IDDIG; - dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); + dwc3_omap_write_utmi_status(omap, val); break; default: - dev_dbg(omap->dev, "ID float\n"); + dev_dbg(omap->dev, "invalid state\n"); } - - return 0; } -EXPORT_SYMBOL_GPL(dwc3_omap_mailbox); static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) { @@ -199,44 +282,45 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) spin_lock(&omap->lock); - reg = dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_1); + reg = dwc3_omap_read_irqmisc_status(omap); - if (reg & USBOTGSS_IRQ1_DMADISABLECLR) { + if (reg & USBOTGSS_IRQMISC_DMADISABLECLR) { dev_dbg(omap->dev, "DMA Disable was Cleared\n"); omap->dma_status = false; } - if (reg & USBOTGSS_IRQ1_OEVT) + if (reg & USBOTGSS_IRQMISC_OEVT) dev_dbg(omap->dev, "OTG Event\n"); - if (reg & USBOTGSS_IRQ1_DRVVBUS_RISE) + if (reg & USBOTGSS_IRQMISC_DRVVBUS_RISE) dev_dbg(omap->dev, "DRVVBUS Rise\n"); - if (reg & USBOTGSS_IRQ1_CHRGVBUS_RISE) + if (reg & USBOTGSS_IRQMISC_CHRGVBUS_RISE) dev_dbg(omap->dev, "CHRGVBUS Rise\n"); - if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_RISE) + if (reg & USBOTGSS_IRQMISC_DISCHRGVBUS_RISE) dev_dbg(omap->dev, "DISCHRGVBUS Rise\n"); - if (reg & USBOTGSS_IRQ1_IDPULLUP_RISE) + if (reg & USBOTGSS_IRQMISC_IDPULLUP_RISE) dev_dbg(omap->dev, "IDPULLUP Rise\n"); - if (reg & USBOTGSS_IRQ1_DRVVBUS_FALL) + if (reg & USBOTGSS_IRQMISC_DRVVBUS_FALL) dev_dbg(omap->dev, "DRVVBUS Fall\n"); - if (reg & USBOTGSS_IRQ1_CHRGVBUS_FALL) + if (reg & USBOTGSS_IRQMISC_CHRGVBUS_FALL) dev_dbg(omap->dev, "CHRGVBUS Fall\n"); - if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_FALL) + if (reg & USBOTGSS_IRQMISC_DISCHRGVBUS_FALL) dev_dbg(omap->dev, "DISCHRGVBUS Fall\n"); - if (reg & USBOTGSS_IRQ1_IDPULLUP_FALL) + if (reg & USBOTGSS_IRQMISC_IDPULLUP_FALL) dev_dbg(omap->dev, "IDPULLUP Fall\n"); - dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_1, reg); + dwc3_omap_write_irqmisc_status(omap, reg); - reg = dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_0); - dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0, reg); + reg = dwc3_omap_read_irq0_status(omap); + + dwc3_omap_write_irq0_status(omap, reg); spin_unlock(&omap->lock); @@ -258,30 +342,56 @@ static void dwc3_omap_enable_irqs(struct dwc3_omap *omap) /* enable all IRQs */ reg = USBOTGSS_IRQO_COREIRQ_ST; - dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0, reg); - - reg = (USBOTGSS_IRQ1_OEVT | - USBOTGSS_IRQ1_DRVVBUS_RISE | - USBOTGSS_IRQ1_CHRGVBUS_RISE | - USBOTGSS_IRQ1_DISCHRGVBUS_RISE | - USBOTGSS_IRQ1_IDPULLUP_RISE | - USBOTGSS_IRQ1_DRVVBUS_FALL | - USBOTGSS_IRQ1_CHRGVBUS_FALL | - USBOTGSS_IRQ1_DISCHRGVBUS_FALL | - USBOTGSS_IRQ1_IDPULLUP_FALL); - - dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, reg); + dwc3_omap_write_irq0_set(omap, reg); + + reg = (USBOTGSS_IRQMISC_OEVT | + USBOTGSS_IRQMISC_DRVVBUS_RISE | + USBOTGSS_IRQMISC_CHRGVBUS_RISE | + USBOTGSS_IRQMISC_DISCHRGVBUS_RISE | + USBOTGSS_IRQMISC_IDPULLUP_RISE | + USBOTGSS_IRQMISC_DRVVBUS_FALL | + USBOTGSS_IRQMISC_CHRGVBUS_FALL | + USBOTGSS_IRQMISC_DISCHRGVBUS_FALL | + USBOTGSS_IRQMISC_IDPULLUP_FALL); + + dwc3_omap_write_irqmisc_set(omap, reg); } static void dwc3_omap_disable_irqs(struct dwc3_omap *omap) { /* disable all IRQs */ - dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, 0x00); - dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0, 0x00); + dwc3_omap_write_irqmisc_set(omap, 0x00); + dwc3_omap_write_irq0_set(omap, 0x00); } static u64 dwc3_omap_dma_mask = DMA_BIT_MASK(32); +static int dwc3_omap_id_notifier(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, id_nb); + + if (event) + dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); + else + dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT); + + return NOTIFY_DONE; +} + +static int dwc3_omap_vbus_notifier(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, vbus_nb); + + if (event) + dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); + else + dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF); + + return NOTIFY_DONE; +} + static int dwc3_omap_probe(struct platform_device *pdev) { struct device_node *node = pdev->dev.of_node; @@ -289,11 +399,14 @@ static int dwc3_omap_probe(struct platform_device *pdev) struct dwc3_omap *omap; struct resource *res; struct device *dev = &pdev->dev; + struct extcon_dev *edev; + struct regulator *vbus_reg = NULL; int ret = -ENOMEM; int irq; int utmi_mode = 0; + int x_major; u32 reg; @@ -324,10 +437,16 @@ static int dwc3_omap_probe(struct platform_device *pdev) return -EINVAL; } - base = devm_ioremap_nocache(dev, res->start, resource_size(res)); - if (!base) { - dev_err(dev, "ioremap failed\n"); - return -ENOMEM; + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + if (of_property_read_bool(node, "vbus-supply")) { + vbus_reg = devm_regulator_get(dev, "vbus"); + if (IS_ERR(vbus_reg)) { + dev_err(dev, "vbus init failed\n"); + return PTR_ERR(vbus_reg); + } } spin_lock_init(&omap->lock); @@ -335,22 +454,53 @@ static int dwc3_omap_probe(struct platform_device *pdev) omap->dev = dev; omap->irq = irq; omap->base = base; + omap->vbus_reg = vbus_reg; dev->dma_mask = &dwc3_omap_dma_mask; - /* - * REVISIT if we ever have two instances of the wrapper, we will be - * in big trouble - */ - _omap = omap; - pm_runtime_enable(dev); ret = pm_runtime_get_sync(dev); if (ret < 0) { dev_err(dev, "get_sync failed with err %d\n", ret); - return ret; + goto err0; } - reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + reg = dwc3_omap_readl(omap->base, USBOTGSS_REVISION); + omap->revision = reg; + x_major = USBOTGSS_REVISION_XMAJOR(reg); + + /* Differentiate between OMAP5 and AM437x */ + switch (x_major) { + case USBOTGSS_REVISION_XMAJOR1: + case USBOTGSS_REVISION_XMAJOR2: + omap->irq_eoi_offset = 0; + omap->irq0_offset = 0; + omap->irqmisc_offset = 0; + omap->utmi_otg_offset = 0; + omap->debug_offset = 0; + break; + default: + /* Default to the latest revision */ + omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; + omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; + omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; + omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; + omap->debug_offset = USBOTGSS_DEBUG_OFFSET; + break; + } + + /* For OMAP5(ES2.0) and AM437x x_major is 2 even though there are + * changes in wrapper registers, Using dt compatible for aegis + */ + + if (of_device_is_compatible(node, "ti,am437x-dwc3")) { + omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; + omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; + omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; + omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; + omap->debug_offset = USBOTGSS_DEBUG_OFFSET; + } + + reg = dwc3_omap_read_utmi_status(omap); of_property_read_u32(node, "utmi-mode", &utmi_mode); @@ -365,7 +515,7 @@ static int dwc3_omap_probe(struct platform_device *pdev) dev_dbg(dev, "UNKNOWN utmi mode %d\n", utmi_mode); } - dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, reg); + dwc3_omap_write_utmi_status(omap, reg); /* check the DMA Status */ reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG); @@ -376,24 +526,71 @@ static int dwc3_omap_probe(struct platform_device *pdev) if (ret) { dev_err(dev, "failed to request IRQ #%d --> %d\n", omap->irq, ret); - return ret; + goto err1; } dwc3_omap_enable_irqs(omap); + if (of_property_read_bool(node, "extcon")) { + edev = of_extcon_get_extcon_dev(dev, 0); + if (IS_ERR(edev)) { + dev_vdbg(dev, "couldn't get extcon device\n"); + ret = PTR_ERR(edev); + goto err2; + } + + omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier; + ret = extcon_register_interest(&omap->extcon_vbus_dev, + edev->name, "USB", &omap->vbus_nb); + if (ret < 0) + dev_vdbg(dev, "failed to register notifier for USB\n"); + omap->id_nb.notifier_call = dwc3_omap_id_notifier; + ret = extcon_register_interest(&omap->extcon_id_dev, edev->name, + "USB-HOST", &omap->id_nb); + if (ret < 0) + dev_vdbg(dev, + "failed to register notifier for USB-HOST\n"); + + if (extcon_get_cable_state(edev, "USB") == true) + dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); + if (extcon_get_cable_state(edev, "USB-HOST") == true) + dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); + } + ret = of_platform_populate(node, NULL, NULL, dev); if (ret) { dev_err(&pdev->dev, "failed to create dwc3 core\n"); - return ret; + goto err3; } return 0; + +err3: + if (omap->extcon_vbus_dev.edev) + extcon_unregister_interest(&omap->extcon_vbus_dev); + if (omap->extcon_id_dev.edev) + extcon_unregister_interest(&omap->extcon_id_dev); + +err2: + dwc3_omap_disable_irqs(omap); + +err1: + pm_runtime_put_sync(dev); + +err0: + pm_runtime_disable(dev); + + return ret; } static int dwc3_omap_remove(struct platform_device *pdev) { struct dwc3_omap *omap = platform_get_drvdata(pdev); + if (omap->extcon_vbus_dev.edev) + extcon_unregister_interest(&omap->extcon_vbus_dev); + if (omap->extcon_id_dev.edev) + extcon_unregister_interest(&omap->extcon_id_dev); dwc3_omap_disable_irqs(omap); pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); @@ -406,6 +603,9 @@ static const struct of_device_id of_dwc3_match[] = { { .compatible = "ti,dwc3" }, + { + .compatible = "ti,am437x-dwc3" + }, { }, }; MODULE_DEVICE_TABLE(of, of_dwc3_match); @@ -431,8 +631,7 @@ static int dwc3_omap_suspend(struct device *dev) { struct dwc3_omap *omap = dev_get_drvdata(dev); - omap->utmi_otg_status = dwc3_omap_readl(omap->base, - USBOTGSS_UTMI_OTG_STATUS); + omap->utmi_otg_status = dwc3_omap_read_utmi_status(omap); return 0; } @@ -441,8 +640,7 @@ static int dwc3_omap_resume(struct device *dev) { struct dwc3_omap *omap = dev_get_drvdata(dev); - dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, - omap->utmi_otg_status); + dwc3_omap_write_utmi_status(omap, omap->utmi_otg_status); pm_runtime_disable(dev); pm_runtime_set_active(dev); @@ -477,5 +675,5 @@ module_platform_driver(dwc3_omap_driver); MODULE_ALIAS("platform:omap-dwc3"); MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); -MODULE_LICENSE("Dual BSD/GPL"); +MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer"); diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 227d4a7acad7..9b138129e856 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -6,34 +6,14 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #include <linux/kernel.h> @@ -43,7 +23,7 @@ #include <linux/platform_device.h> #include <linux/usb/otg.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_gen_xceiv.h> /* FIXME define these in <linux/pci_ids.h> */ #define PCI_VENDOR_ID_SYNOPSYS 0x16c3 @@ -58,13 +38,13 @@ struct dwc3_pci { static int dwc3_pci_register_phys(struct dwc3_pci *glue) { - struct nop_usb_xceiv_platform_data pdata; + struct usb_phy_gen_xceiv_platform_data pdata; struct platform_device *pdev; int ret; memset(&pdata, 0x00, sizeof(pdata)); - pdev = platform_device_alloc("nop_usb_xceiv", 0); + pdev = platform_device_alloc("usb_phy_gen_xceiv", 0); if (!pdev) return -ENOMEM; @@ -75,7 +55,7 @@ static int dwc3_pci_register_phys(struct dwc3_pci *glue) if (ret) goto err1; - pdev = platform_device_alloc("nop_usb_xceiv", 1); + pdev = platform_device_alloc("usb_phy_gen_xceiv", 1); if (!pdev) { ret = -ENOMEM; goto err1; @@ -133,7 +113,6 @@ static int dwc3_pci_probe(struct pci_dev *pci, return -ENODEV; } - pci_set_power_state(pci, PCI_D0); pci_set_master(pci); ret = dwc3_pci_register_phys(glue); @@ -196,9 +175,9 @@ static void dwc3_pci_remove(struct pci_dev *pci) { struct dwc3_pci *glue = pci_get_drvdata(pci); + platform_device_unregister(glue->dwc3); platform_device_unregister(glue->usb2_phy); platform_device_unregister(glue->usb3_phy); - platform_device_unregister(glue->dwc3); pci_set_drvdata(pci, NULL); pci_disable_device(pci); } @@ -212,7 +191,7 @@ static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = { }; MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP static int dwc3_pci_suspend(struct device *dev) { struct pci_dev *pci = to_pci_dev(dev); @@ -237,28 +216,24 @@ static int dwc3_pci_resume(struct device *dev) return 0; } +#endif /* CONFIG_PM_SLEEP */ static const struct dev_pm_ops dwc3_pci_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume) }; -#define DEV_PM_OPS (&dwc3_pci_dev_pm_ops) -#else -#define DEV_PM_OPS NULL -#endif /* CONFIG_PM */ - static struct pci_driver dwc3_pci_driver = { .name = "dwc3-pci", .id_table = dwc3_pci_id_table, .probe = dwc3_pci_probe, .remove = dwc3_pci_remove, .driver = { - .pm = DEV_PM_OPS, + .pm = &dwc3_pci_dev_pm_ops, }, }; MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); -MODULE_LICENSE("Dual BSD/GPL"); +MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); module_pci_driver(dwc3_pci_driver); diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 5acbb948b704..7fa93f4bc507 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -6,34 +6,14 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #include <linux/kernel.h> @@ -168,6 +148,7 @@ static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep, direction = !dwc->ep0_expect_in; dwc->delayed_status = false; + usb_gadget_set_state(&dwc->gadget, USB_STATE_CONFIGURED); if (dwc->ep0state == EP0_STATUS_PHASE) __dwc3_ep0_do_control_status(dwc, dwc->eps[direction]); @@ -553,8 +534,16 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) ret = dwc3_ep0_delegate_req(dwc, ctrl); /* if the cfg matches and the cfg is non zero */ if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) { - usb_gadget_set_state(&dwc->gadget, - USB_STATE_CONFIGURED); + + /* + * only change state if set_config has already + * been processed. If gadget driver returns + * USB_GADGET_DELAYED_STATUS, we will wait + * to change the state on the next usb_ep_queue() + */ + if (ret == 0) + usb_gadget_set_state(&dwc->gadget, + USB_STATE_CONFIGURED); /* * Enable transition to U1/U2 state when @@ -571,7 +560,7 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) case USB_STATE_CONFIGURED: ret = dwc3_ep0_delegate_req(dwc, ctrl); - if (!cfg) + if (!cfg && !ret) usb_gadget_set_state(&dwc->gadget, USB_STATE_ADDRESS); break; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 2b6e7e001207..f168eaebdef8 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -6,34 +6,14 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #include <linux/kernel.h> @@ -520,6 +500,8 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, u32 reg; int ret = -ENOMEM; + dev_vdbg(dwc->dev, "Enabling %s\n", dep->name); + if (!(dep->flags & DWC3_EP_ENABLED)) { ret = dwc3_gadget_start_config(dwc, dep); if (ret) @@ -676,8 +658,6 @@ static int dwc3_gadget_ep_enable(struct usb_ep *ep, dev_err(dwc->dev, "invalid endpoint transfer type\n"); } - dev_vdbg(dwc->dev, "Enabling %s\n", dep->name); - spin_lock_irqsave(&dwc->lock, flags); ret = __dwc3_gadget_ep_enable(dep, desc, ep->comp_desc, false); spin_unlock_irqrestore(&dwc->lock, flags); @@ -1508,6 +1488,15 @@ static int dwc3_gadget_start(struct usb_gadget *g, int irq; u32 reg; + irq = platform_get_irq(to_platform_device(dwc->dev), 0); + ret = request_threaded_irq(irq, dwc3_interrupt, dwc3_thread_interrupt, + IRQF_SHARED, "dwc3", dwc); + if (ret) { + dev_err(dwc->dev, "failed to request irq #%d --> %d\n", + irq, ret); + goto err0; + } + spin_lock_irqsave(&dwc->lock, flags); if (dwc->gadget_driver) { @@ -1515,7 +1504,7 @@ static int dwc3_gadget_start(struct usb_gadget *g, dwc->gadget.name, dwc->gadget_driver->driver.name); ret = -EBUSY; - goto err0; + goto err1; } dwc->gadget_driver = driver; @@ -1536,10 +1525,25 @@ static int dwc3_gadget_start(struct usb_gadget *g, * STAR#9000525659: Clock Domain Crossing on DCTL in * USB 2.0 Mode */ - if (dwc->revision < DWC3_REVISION_220A) + if (dwc->revision < DWC3_REVISION_220A) { reg |= DWC3_DCFG_SUPERSPEED; - else - reg |= dwc->maximum_speed; + } else { + switch (dwc->maximum_speed) { + case USB_SPEED_LOW: + reg |= DWC3_DSTS_LOWSPEED; + break; + case USB_SPEED_FULL: + reg |= DWC3_DSTS_FULLSPEED1; + break; + case USB_SPEED_HIGH: + reg |= DWC3_DSTS_HIGHSPEED; + break; + case USB_SPEED_SUPER: /* FALLTHROUGH */ + case USB_SPEED_UNKNOWN: /* FALTHROUGH */ + default: + reg |= DWC3_DSTS_SUPERSPEED; + } + } dwc3_writel(dwc->regs, DWC3_DCFG, reg); dwc->start_config_issued = false; @@ -1551,41 +1555,38 @@ static int dwc3_gadget_start(struct usb_gadget *g, ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false); if (ret) { dev_err(dwc->dev, "failed to enable %s\n", dep->name); - goto err0; + goto err2; } dep = dwc->eps[1]; ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false); if (ret) { dev_err(dwc->dev, "failed to enable %s\n", dep->name); - goto err1; + goto err3; } /* begin to receive SETUP packets */ dwc->ep0state = EP0_SETUP_PHASE; dwc3_ep0_out_start(dwc); - irq = platform_get_irq(to_platform_device(dwc->dev), 0); - ret = request_threaded_irq(irq, dwc3_interrupt, dwc3_thread_interrupt, - IRQF_SHARED | IRQF_ONESHOT, "dwc3", dwc); - if (ret) { - dev_err(dwc->dev, "failed to request irq #%d --> %d\n", - irq, ret); - goto err1; - } - dwc3_gadget_enable_irq(dwc); spin_unlock_irqrestore(&dwc->lock, flags); return 0; -err1: +err3: __dwc3_gadget_ep_disable(dwc->eps[0]); -err0: +err2: + dwc->gadget_driver = NULL; + +err1: spin_unlock_irqrestore(&dwc->lock, flags); + free_irq(irq, dwc); + +err0: return ret; } @@ -1599,9 +1600,6 @@ static int dwc3_gadget_stop(struct usb_gadget *g, spin_lock_irqsave(&dwc->lock, flags); dwc3_gadget_disable_irq(dwc); - irq = platform_get_irq(to_platform_device(dwc->dev), 0); - free_irq(irq, dwc); - __dwc3_gadget_ep_disable(dwc->eps[0]); __dwc3_gadget_ep_disable(dwc->eps[1]); @@ -1609,6 +1607,9 @@ static int dwc3_gadget_stop(struct usb_gadget *g, spin_unlock_irqrestore(&dwc->lock, flags); + irq = platform_get_irq(to_platform_device(dwc->dev), 0); + free_irq(irq, dwc); + return 0; } @@ -1641,13 +1642,15 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc, dep->dwc = dwc; dep->number = epnum; + dep->direction = !!direction; dwc->eps[epnum] = dep; snprintf(dep->name, sizeof(dep->name), "ep%d%s", epnum >> 1, (epnum & 1) ? "in" : "out"); dep->endpoint.name = dep->name; - dep->direction = (epnum & 1); + + dev_vdbg(dwc->dev, "initializing %s\n", dep->name); if (epnum == 0 || epnum == 1) { dep->endpoint.maxpacket = 512; @@ -1706,11 +1709,19 @@ static void dwc3_gadget_free_endpoints(struct dwc3 *dwc) dep = dwc->eps[epnum]; if (!dep) continue; - - dwc3_free_trb_pool(dep); - - if (epnum != 0 && epnum != 1) + /* + * Physical endpoints 0 and 1 are special; they form the + * bi-directional USB endpoint 0. + * + * For those two physical endpoints, we don't allocate a TRB + * pool nor do we add them the endpoints list. Due to that, we + * shouldn't do these two operations otherwise we would end up + * with all sorts of bugs when removing dwc3.ko. + */ + if (epnum != 0 && epnum != 1) { + dwc3_free_trb_pool(dep); list_del(&dep->endpoint.ep_list); + } kfree(dep); } @@ -2096,34 +2107,6 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc) dwc->setup_packet_pending = false; } -static void dwc3_gadget_usb3_phy_suspend(struct dwc3 *dwc, int suspend) -{ - u32 reg; - - reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); - - if (suspend) - reg |= DWC3_GUSB3PIPECTL_SUSPHY; - else - reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; - - dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); -} - -static void dwc3_gadget_usb2_phy_suspend(struct dwc3 *dwc, int suspend) -{ - u32 reg; - - reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); - - if (suspend) - reg |= DWC3_GUSB2PHYCFG_SUSPHY; - else - reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; - - dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); -} - static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc) { u32 reg; @@ -2164,13 +2147,6 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc) /* after reset -> Default State */ usb_gadget_set_state(&dwc->gadget, USB_STATE_DEFAULT); - /* Recent versions support automatic phy suspend and don't need this */ - if (dwc->revision < DWC3_REVISION_194A) { - /* Resume PHYs */ - dwc3_gadget_usb2_phy_suspend(dwc, false); - dwc3_gadget_usb3_phy_suspend(dwc, false); - } - if (dwc->gadget.speed != USB_SPEED_UNKNOWN) dwc3_disconnect_gadget(dwc); @@ -2214,20 +2190,6 @@ static void dwc3_update_ram_clk_sel(struct dwc3 *dwc, u32 speed) dwc3_writel(dwc->regs, DWC3_GCTL, reg); } -static void dwc3_gadget_phy_suspend(struct dwc3 *dwc, u8 speed) -{ - switch (speed) { - case USB_SPEED_SUPER: - dwc3_gadget_usb2_phy_suspend(dwc, true); - break; - case USB_SPEED_HIGH: - case USB_SPEED_FULL: - case USB_SPEED_LOW: - dwc3_gadget_usb3_phy_suspend(dwc, true); - break; - } -} - static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) { struct dwc3_ep *dep; @@ -2303,12 +2265,6 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) dwc3_writel(dwc->regs, DWC3_DCTL, reg); } - /* Recent versions support automatic phy suspend and don't need this */ - if (dwc->revision < DWC3_REVISION_194A) { - /* Suspend unneeded PHY */ - dwc3_gadget_phy_suspend(dwc, dwc->gadget.speed); - } - dep = dwc->eps[0]; ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, true); if (ret) { @@ -2486,61 +2442,75 @@ static void dwc3_process_event_entry(struct dwc3 *dwc, } } -static irqreturn_t dwc3_thread_interrupt(int irq, void *_dwc) +static irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf) { - struct dwc3 *dwc = _dwc; - unsigned long flags; + struct dwc3_event_buffer *evt; irqreturn_t ret = IRQ_NONE; - int i; + int left; + u32 reg; - spin_lock_irqsave(&dwc->lock, flags); + evt = dwc->ev_buffs[buf]; + left = evt->count; - for (i = 0; i < dwc->num_event_buffers; i++) { - struct dwc3_event_buffer *evt; - int left; + if (!(evt->flags & DWC3_EVENT_PENDING)) + return IRQ_NONE; - evt = dwc->ev_buffs[i]; - left = evt->count; + while (left > 0) { + union dwc3_event event; - if (!(evt->flags & DWC3_EVENT_PENDING)) - continue; + event.raw = *(u32 *) (evt->buf + evt->lpos); - while (left > 0) { - union dwc3_event event; + dwc3_process_event_entry(dwc, &event); - event.raw = *(u32 *) (evt->buf + evt->lpos); + /* + * FIXME we wrap around correctly to the next entry as + * almost all entries are 4 bytes in size. There is one + * entry which has 12 bytes which is a regular entry + * followed by 8 bytes data. ATM I don't know how + * things are organized if we get next to the a + * boundary so I worry about that once we try to handle + * that. + */ + evt->lpos = (evt->lpos + 4) % DWC3_EVENT_BUFFERS_SIZE; + left -= 4; - dwc3_process_event_entry(dwc, &event); + dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(buf), 4); + } - /* - * FIXME we wrap around correctly to the next entry as - * almost all entries are 4 bytes in size. There is one - * entry which has 12 bytes which is a regular entry - * followed by 8 bytes data. ATM I don't know how - * things are organized if we get next to the a - * boundary so I worry about that once we try to handle - * that. - */ - evt->lpos = (evt->lpos + 4) % DWC3_EVENT_BUFFERS_SIZE; - left -= 4; + evt->count = 0; + evt->flags &= ~DWC3_EVENT_PENDING; + ret = IRQ_HANDLED; - dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(i), 4); - } + /* Unmask interrupt */ + reg = dwc3_readl(dwc->regs, DWC3_GEVNTSIZ(buf)); + reg &= ~DWC3_GEVNTSIZ_INTMASK; + dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(buf), reg); - evt->count = 0; - evt->flags &= ~DWC3_EVENT_PENDING; - ret = IRQ_HANDLED; - } + return ret; +} + +static irqreturn_t dwc3_thread_interrupt(int irq, void *_dwc) +{ + struct dwc3 *dwc = _dwc; + unsigned long flags; + irqreturn_t ret = IRQ_NONE; + int i; + + spin_lock_irqsave(&dwc->lock, flags); + + for (i = 0; i < dwc->num_event_buffers; i++) + ret |= dwc3_process_event_buf(dwc, i); spin_unlock_irqrestore(&dwc->lock, flags); return ret; } -static irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf) +static irqreturn_t dwc3_check_event_buf(struct dwc3 *dwc, u32 buf) { struct dwc3_event_buffer *evt; u32 count; + u32 reg; evt = dwc->ev_buffs[buf]; @@ -2552,6 +2522,11 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf) evt->count = count; evt->flags |= DWC3_EVENT_PENDING; + /* Mask interrupt */ + reg = dwc3_readl(dwc->regs, DWC3_GEVNTSIZ(buf)); + reg |= DWC3_GEVNTSIZ_INTMASK; + dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(buf), reg); + return IRQ_WAKE_THREAD; } @@ -2566,7 +2541,7 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc) for (i = 0; i < dwc->num_event_buffers; i++) { irqreturn_t status; - status = dwc3_process_event_buf(dwc, i); + status = dwc3_check_event_buf(dwc, i); if (status == IRQ_WAKE_THREAD) ret = status; } @@ -2584,7 +2559,6 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc) */ int dwc3_gadget_init(struct dwc3 *dwc) { - u32 reg; int ret; dwc->ctrl_req = dma_alloc_coherent(dwc->dev, sizeof(*dwc->ctrl_req), @@ -2634,16 +2608,6 @@ int dwc3_gadget_init(struct dwc3 *dwc) if (ret) goto err4; - reg = dwc3_readl(dwc->regs, DWC3_DCFG); - reg |= DWC3_DCFG_LPM_CAP; - dwc3_writel(dwc->regs, DWC3_DCFG, reg); - - /* Enable USB2 LPM and automatic phy suspend only on recent versions */ - if (dwc->revision >= DWC3_REVISION_194A) { - dwc3_gadget_usb2_phy_suspend(dwc, false); - dwc3_gadget_usb3_phy_suspend(dwc, false); - } - ret = usb_add_gadget_udc(dwc->dev, &dwc->gadget); if (ret) { dev_err(dwc->dev, "failed to register udc\n"); diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index 99e6d7248820..febe1aa7b714 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -6,34 +6,14 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #ifndef __DRIVERS_USB_DWC3_GADGET_H diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c index 0fa1846eda4c..32db328cc769 100644 --- a/drivers/usb/dwc3/host.c +++ b/drivers/usb/dwc3/host.c @@ -5,34 +5,14 @@ * * Authors: Felipe Balbi <balbi@ti.com>, * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #include <linux/platform_device.h> diff --git a/drivers/usb/dwc3/io.h b/drivers/usb/dwc3/io.h index a50f76b9d19b..d94441c14d8c 100644 --- a/drivers/usb/dwc3/io.h +++ b/drivers/usb/dwc3/io.h @@ -6,34 +6,14 @@ * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. */ #ifndef __DRIVERS_USB_DWC3_IO_H diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h new file mode 100644 index 000000000000..7db34f00b89a --- /dev/null +++ b/drivers/usb/dwc3/platform_data.h @@ -0,0 +1,27 @@ +/** + * platform_data.h - USB DWC3 Platform Data Support + * + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com + * Author: Felipe Balbi <balbi@ti.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/usb/ch9.h> +#include <linux/usb/otg.h> + +struct dwc3_platform_data { + enum usb_device_speed maximum_speed; + enum usb_dr_mode dr_mode; + bool tx_fifo_resize; +}; diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index f41aa0d0c414..30e2dd8a1f2c 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -144,7 +144,6 @@ config USB_AT91 config USB_LPC32XX tristate "LPC32XX USB Peripheral Controller" depends on ARCH_LPC32XX - depends on USB_PHY select USB_ISP1301 help This option selects the USB device controller in the LPC32xx SoC. @@ -155,7 +154,7 @@ config USB_LPC32XX config USB_ATMEL_USBA tristate "Atmel USBA" - depends on AVR32 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45 + depends on AVR32 || ARCH_AT91 help USBA is the integrated high-speed USB Device controller on the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel. @@ -188,14 +187,24 @@ config USB_FSL_USB2 config USB_FUSB300 tristate "Faraday FUSB300 USB Peripheral Controller" - depends on !PHYS_ADDR_T_64BIT + depends on !PHYS_ADDR_T_64BIT && HAS_DMA help Faraday usb device controller FUSB300 driver +config USB_FOTG210_UDC + depends on HAS_DMA + tristate "Faraday FOTG210 USB Peripheral Controller" + help + Faraday USB2.0 OTG controller which can be configured as + high speed or full speed USB device. This driver supppors + Bulk Transfer so far. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "fotg210_udc". + config USB_OMAP tristate "OMAP USB Device Controller" depends on ARCH_OMAP1 - depends on USB_PHY select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG help Many Texas Instruments OMAP processors have flexible full @@ -235,6 +244,7 @@ config USB_PXA25X_SMALL config USB_R8A66597 tristate "Renesas R8A66597 USB Peripheral Controller" + depends on HAS_DMA help R8A66597 is a discrete USB host and peripheral controller chip that supports both full and high speed USB 2.0 data transfers. @@ -276,21 +286,6 @@ config USB_S3C_HSOTG The Samsung S3C64XX USB2.0 high-speed gadget controller integrated into the S3C64XX series SoC. -config USB_IMX - tristate "Freescale i.MX1 USB Peripheral Controller" - depends on ARCH_MXC - depends on BROKEN - help - Freescale's i.MX1 includes an integrated full speed - USB 1.1 device controller. - - It has Six fixed-function endpoints, as well as endpoint - zero (for control transfers). - - Say "y" to link the driver statically, or "m" to build a - dynamically linked module called "imx_udc" and force all - gadget drivers to also be dynamically linked. - config USB_S3C2410 tristate "S3C2410 USB Device Controller" depends on ARCH_S3C24XX @@ -318,13 +313,14 @@ config USB_S3C_HSUDC config USB_MV_UDC tristate "Marvell USB2.0 Device Controller" - depends on GENERIC_HARDIRQS + depends on GENERIC_HARDIRQS && HAS_DMA help Marvell Socs (including PXA and MMP series) include a high speed USB2.0 OTG controller, which can be configured as high speed or full speed USB peripheral. config USB_MV_U3D + depends on HAS_DMA tristate "MARVELL PXA2128 USB 3.0 controller" help MARVELL PXA2128 Processor series include a super speed USB3.0 device @@ -334,14 +330,6 @@ config USB_MV_U3D # Controllers available in both integrated and discrete versions # -# musb builds in ../musb along with host support -config USB_GADGET_MUSB_HDRC - tristate "Inventra HDRC USB Peripheral (TI, ADI, ...)" - depends on USB_MUSB_HDRC - help - This OTG-capable silicon IP is used in dual designs including - the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin - config USB_M66592 tristate "Renesas M66592 USB Peripheral Controller" help @@ -398,7 +386,7 @@ config USB_NET2272 config USB_NET2272_DMA boolean "Support external DMA controller" - depends on USB_NET2272 + depends on USB_NET2272 && HAS_DMA help The NET2272 part can optionally support an external DMA controller, but your board has to have support in the @@ -507,12 +495,36 @@ config USB_F_SS_LB config USB_U_SERIAL tristate +config USB_U_ETHER + tristate + +config USB_U_RNDIS + tristate + config USB_F_SERIAL tristate config USB_F_OBEX tristate +config USB_F_NCM + tristate + +config USB_F_ECM + tristate + +config USB_F_PHONET + tristate + +config USB_F_EEM + tristate + +config USB_F_SUBSET + tristate + +config USB_F_RNDIS + tristate + choice tristate "USB Gadget Drivers" default USB_ETH @@ -534,6 +546,122 @@ choice # this first set of drivers all depend on bulk-capable hardware. +config USB_CONFIGFS + tristate "USB functions configurable through configfs" + select USB_LIBCOMPOSITE + help + A Linux USB "gadget" can be set up through configfs. + If this is the case, the USB functions (which from the host's + perspective are seen as interfaces) and configurations are + specified simply by creating appropriate directories in configfs. + Associating functions with configurations is done by creating + appropriate symbolic links. + For more information see Documentation/usb/gadget_configfs.txt. + +config USB_CONFIGFS_SERIAL + boolean "Generic serial bulk in/out" + depends on USB_CONFIGFS + depends on TTY + select USB_U_SERIAL + select USB_F_SERIAL + help + The function talks to the Linux-USB generic serial driver. + +config USB_CONFIGFS_ACM + boolean "Abstract Control Model (CDC ACM)" + depends on USB_CONFIGFS + depends on TTY + select USB_U_SERIAL + select USB_F_ACM + help + ACM serial link. This function can be used to interoperate with + MS-Windows hosts or with the Linux-USB "cdc-acm" driver. + +config USB_CONFIGFS_OBEX + boolean "Object Exchange Model (CDC OBEX)" + depends on USB_CONFIGFS + depends on TTY + select USB_U_SERIAL + select USB_F_OBEX + help + You will need a user space OBEX server talking to /dev/ttyGS*, + since the kernel itself doesn't implement the OBEX protocol. + +config USB_CONFIGFS_NCM + boolean "Network Control Model (CDC NCM)" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_F_NCM + help + NCM is an advanced protocol for Ethernet encapsulation, allows + grouping of several ethernet frames into one USB transfer and + different alignment possibilities. + +config USB_CONFIGFS_ECM + boolean "Ethernet Control Model (CDC ECM)" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_F_ECM + help + The "Communication Device Class" (CDC) Ethernet Control Model. + That protocol is often avoided with pure Ethernet adapters, in + favor of simpler vendor-specific hardware, but is widely + supported by firmware for smart network devices. + +config USB_CONFIGFS_ECM_SUBSET + boolean "Ethernet Control Model (CDC ECM) subset" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_F_SUBSET + help + On hardware that can't implement the full protocol, + a simple CDC subset is used, placing fewer demands on USB. + +config USB_CONFIGFS_RNDIS + bool "RNDIS" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_U_RNDIS + select USB_F_RNDIS + help + Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol, + and Microsoft provides redistributable binary RNDIS drivers for + older versions of Windows. + + To make MS-Windows work with this, use Documentation/usb/linux.inf + as the "driver info file". For versions of MS-Windows older than + XP, you'll need to download drivers from Microsoft's website; a URL + is given in comments found in that info file. + +config USB_CONFIGFS_EEM + bool "Ethernet Emulation Model (EEM)" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_F_EEM + help + CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM + and therefore can be supported by more hardware. Technically ECM and + EEM are designed for different applications. The ECM model extends + the network interface to the target (e.g. a USB cable modem), and the + EEM model is for mobile devices to communicate with hosts using + ethernet over USB. For Linux gadgets, however, the interface with + the host is the same (a usbX device), so the differences are minimal. + +config USB_CONFIGFS_PHONET + boolean "Phonet protocol" + depends on USB_CONFIGFS + depends on NET + depends on PHONET + select USB_U_ETHER + select USB_F_PHONET + help + The Phonet protocol implementation for USB device. + config USB_ZERO tristate "Gadget Zero (DEVELOPMENT)" select USB_LIBCOMPOSITE @@ -603,6 +731,10 @@ config USB_ETH tristate "Ethernet Gadget (with CDC Ethernet support)" depends on NET select USB_LIBCOMPOSITE + select USB_U_ETHER + select USB_U_RNDIS + select USB_F_ECM + select USB_F_SUBSET select CRC32 help This driver implements Ethernet style communication, in one of @@ -639,6 +771,7 @@ config USB_ETH_RNDIS bool "RNDIS support" depends on USB_ETH select USB_LIBCOMPOSITE + select USB_F_RNDIS default y help Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol, @@ -658,6 +791,7 @@ config USB_ETH_EEM bool "Ethernet Emulation Model (EEM) support" depends on USB_ETH select USB_LIBCOMPOSITE + select USB_F_EEM default n help CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM @@ -675,6 +809,8 @@ config USB_G_NCM tristate "Network Control Model (NCM) support" depends on NET select USB_LIBCOMPOSITE + select USB_U_ETHER + select USB_F_NCM select CRC32 help This driver implements USB CDC NCM subclass standard. NCM is @@ -718,6 +854,7 @@ config USB_FUNCTIONFS config USB_FUNCTIONFS_ETH bool "Include configuration with CDC ECM (Ethernet)" depends on USB_FUNCTIONFS && NET + select USB_U_ETHER help Include a configuration with CDC ECM function (Ethernet) and the Function Filesystem. @@ -725,6 +862,8 @@ config USB_FUNCTIONFS_ETH config USB_FUNCTIONFS_RNDIS bool "Include configuration with RNDIS (Ethernet)" depends on USB_FUNCTIONFS && NET + select USB_U_ETHER + select USB_U_RNDIS help Include a configuration with RNDIS function (Ethernet) and the Filesystem. @@ -825,7 +964,9 @@ config USB_CDC_COMPOSITE depends on NET select USB_LIBCOMPOSITE select USB_U_SERIAL + select USB_U_ETHER select USB_F_ACM + select USB_F_ECM help This driver provides two functions in one configuration: a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link. @@ -842,7 +983,11 @@ config USB_G_NOKIA depends on PHONET select USB_LIBCOMPOSITE select USB_U_SERIAL + select USB_U_ETHER select USB_F_ACM + select USB_F_OBEX + select USB_F_PHONET + select USB_F_ECM help The Nokia composite gadget provides support for acm, obex and phonet in only one composite gadget driver. @@ -869,6 +1014,8 @@ config USB_G_MULTI select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS select USB_LIBCOMPOSITE select USB_U_SERIAL + select USB_U_ETHER + select USB_U_RNDIS select USB_F_ACM help The Multifunction Composite Gadget provides Ethernet (RNDIS diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 6afd16659e78..386db9daf1d9 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -13,7 +13,6 @@ obj-$(CONFIG_USB_NET2280) += net2280.o obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc.o obj-$(CONFIG_USB_PXA25X) += pxa25x_udc.o obj-$(CONFIG_USB_PXA27X) += pxa27x_udc.o -obj-$(CONFIG_USB_IMX) += imx_udc.o obj-$(CONFIG_USB_GOKU) += goku_udc.o obj-$(CONFIG_USB_OMAP) += omap_udc.o obj-$(CONFIG_USB_S3C2410) += s3c2410_udc.o @@ -33,6 +32,7 @@ obj-$(CONFIG_USB_EG20T) += pch_udc.o obj-$(CONFIG_USB_MV_UDC) += mv_udc.o mv_udc-y := mv_udc_core.o obj-$(CONFIG_USB_FUSB300) += fusb300_udc.o +obj-$(CONFIG_USB_FOTG210_UDC) += fotg210-udc.o obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o # USB Functions @@ -45,6 +45,21 @@ usb_f_serial-y := f_serial.o obj-$(CONFIG_USB_F_SERIAL) += usb_f_serial.o usb_f_obex-y := f_obex.o obj-$(CONFIG_USB_F_OBEX) += usb_f_obex.o +obj-$(CONFIG_USB_U_ETHER) += u_ether.o +u_rndis-y := rndis.o +obj-$(CONFIG_USB_U_RNDIS) += u_rndis.o +usb_f_ncm-y := f_ncm.o +obj-$(CONFIG_USB_F_NCM) += usb_f_ncm.o +usb_f_ecm-y := f_ecm.o +obj-$(CONFIG_USB_F_ECM) += usb_f_ecm.o +usb_f_phonet-y := f_phonet.o +obj-$(CONFIG_USB_F_PHONET) += usb_f_phonet.o +usb_f_eem-y := f_eem.o +obj-$(CONFIG_USB_F_EEM) += usb_f_eem.o +usb_f_ecm_subset-y := f_subset.o +obj-$(CONFIG_USB_F_SUBSET) += usb_f_ecm_subset.o +usb_f_rndis-y := f_rndis.o +obj-$(CONFIG_USB_F_RNDIS) += usb_f_rndis.o # # USB gadget drivers diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c index f52dcfe8f545..a9a4346c83aa 100644 --- a/drivers/usb/gadget/amd5536udc.c +++ b/drivers/usb/gadget/amd5536udc.c @@ -1122,7 +1122,7 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp) goto finished; } if (ep->dma) { - retval = prep_dma(ep, req, gfp); + retval = prep_dma(ep, req, GFP_ATOMIC); if (retval != 0) goto finished; /* write desc pointer to enable DMA */ @@ -1190,7 +1190,7 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp) * for PPB modes, because of chain creation reasons */ if (ep->in) { - retval = prep_dma(ep, req, gfp); + retval = prep_dma(ep, req, GFP_ATOMIC); if (retval != 0) goto finished; } diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 073b938f9135..4cc4fd6d1473 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -870,8 +870,13 @@ static void clk_on(struct at91_udc *udc) if (udc->clocked) return; udc->clocked = 1; - clk_enable(udc->iclk); - clk_enable(udc->fclk); + + if (IS_ENABLED(CONFIG_COMMON_CLK)) { + clk_set_rate(udc->uclk, 48000000); + clk_prepare_enable(udc->uclk); + } + clk_prepare_enable(udc->iclk); + clk_prepare_enable(udc->fclk); } static void clk_off(struct at91_udc *udc) @@ -880,8 +885,10 @@ static void clk_off(struct at91_udc *udc) return; udc->clocked = 0; udc->gadget.speed = USB_SPEED_UNKNOWN; - clk_disable(udc->fclk); - clk_disable(udc->iclk); + clk_disable_unprepare(udc->fclk); + clk_disable_unprepare(udc->iclk); + if (IS_ENABLED(CONFIG_COMMON_CLK)) + clk_disable_unprepare(udc->uclk); } /* @@ -1697,7 +1704,7 @@ static int at91udc_probe(struct platform_device *pdev) int retval; struct resource *res; - if (!dev->platform_data && !pdev->dev.of_node) { + if (!dev_get_platdata(dev) && !pdev->dev.of_node) { /* small (so we copy it) but critical! */ DBG("missing platform_data\n"); return -ENODEV; @@ -1725,10 +1732,10 @@ static int at91udc_probe(struct platform_device *pdev) /* init software state */ udc = &controller; udc->gadget.dev.parent = dev; - if (pdev->dev.of_node) + if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) at91udc_of_init(udc, pdev->dev.of_node); else - memcpy(&udc->board, dev->platform_data, + memcpy(&udc->board, dev_get_platdata(dev), sizeof(struct at91_udc_data)); udc->pdev = pdev; udc->enabled = 0; @@ -1774,20 +1781,24 @@ static int at91udc_probe(struct platform_device *pdev) /* get interface and function clocks */ udc->iclk = clk_get(dev, "udc_clk"); udc->fclk = clk_get(dev, "udpck"); - if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk)) { + if (IS_ENABLED(CONFIG_COMMON_CLK)) + udc->uclk = clk_get(dev, "usb_clk"); + if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk) || + (IS_ENABLED(CONFIG_COMMON_CLK) && IS_ERR(udc->uclk))) { DBG("clocks missing\n"); retval = -ENODEV; - /* NOTE: we "know" here that refcounts on these are NOPs */ goto fail1; } /* don't do anything until we have both gadget driver and VBUS */ - clk_enable(udc->iclk); + retval = clk_prepare_enable(udc->iclk); + if (retval) + goto fail1; at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS); at91_udp_write(udc, AT91_UDP_IDR, 0xffffffff); /* Clear all pending interrupts - UDP may be used by bootloader. */ at91_udp_write(udc, AT91_UDP_ICR, 0xffffffff); - clk_disable(udc->iclk); + clk_disable_unprepare(udc->iclk); /* request UDC and maybe VBUS irqs */ udc->udp_irq = platform_get_irq(pdev, 0); @@ -1849,6 +1860,12 @@ fail3: fail2: free_irq(udc->udp_irq, udc); fail1: + if (IS_ENABLED(CONFIG_COMMON_CLK) && !IS_ERR(udc->uclk)) + clk_put(udc->uclk); + if (!IS_ERR(udc->fclk)) + clk_put(udc->fclk); + if (!IS_ERR(udc->iclk)) + clk_put(udc->iclk); iounmap(udc->udp_baseaddr); fail0a: if (cpu_is_at91rm9200()) @@ -1892,6 +1909,8 @@ static int __exit at91udc_remove(struct platform_device *pdev) clk_put(udc->iclk); clk_put(udc->fclk); + if (IS_ENABLED(CONFIG_COMMON_CLK)) + clk_put(udc->uclk); return 0; } diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h index e647d1c2ada4..017524663381 100644 --- a/drivers/usb/gadget/at91_udc.h +++ b/drivers/usb/gadget/at91_udc.h @@ -126,7 +126,7 @@ struct at91_udc { unsigned active_suspend:1; u8 addr; struct at91_udc_data board; - struct clk *iclk, *fclk; + struct clk *iclk, *fclk, *uclk; struct platform_device *pdev; struct proc_dir_entry *pde; void __iomem *udp_baseaddr; diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index 5a5128a226f7..2cb52e0438df 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -22,15 +22,13 @@ #include <linux/usb/atmel_usba_udc.h> #include <linux/delay.h> #include <linux/platform_data/atmel.h> +#include <linux/of.h> +#include <linux/of_gpio.h> #include <asm/gpio.h> #include "atmel_usba_udc.h" - -static struct usba_udc the_udc; -static struct usba_ep *usba_ep; - #ifdef CONFIG_USB_GADGET_DEBUG_FS #include <linux/debugfs.h> #include <linux/uaccess.h> @@ -1014,16 +1012,13 @@ static void nop_release(struct device *dev) } -static struct usba_udc the_udc = { - .gadget = { - .ops = &usba_udc_ops, - .ep_list = LIST_HEAD_INIT(the_udc.gadget.ep_list), - .max_speed = USB_SPEED_HIGH, - .name = "atmel_usba_udc", - .dev = { - .init_name = "gadget", - .release = nop_release, - }, +struct usb_gadget usba_gadget_template = { + .ops = &usba_udc_ops, + .max_speed = USB_SPEED_HIGH, + .name = "atmel_usba_udc", + .dev = { + .init_name = "gadget", + .release = nop_release, }, }; @@ -1147,7 +1142,7 @@ static int do_test_mode(struct usba_udc *udc) * Test_SE0_NAK: Force high-speed mode and set up ep0 * for Bulk IN transfers */ - ep = &usba_ep[0]; + ep = &udc->usba_ep[0]; usba_writel(udc, TST, USBA_BF(SPEED_CFG, USBA_SPEED_CFG_FORCE_HIGH)); usba_ep_writel(ep, CFG, @@ -1165,7 +1160,7 @@ static int do_test_mode(struct usba_udc *udc) break; case 0x0400: /* Test_Packet */ - ep = &usba_ep[0]; + ep = &udc->usba_ep[0]; usba_ep_writel(ep, CFG, USBA_BF(EPT_SIZE, USBA_EPT_SIZE_64) | USBA_EPT_DIR_IN @@ -1668,7 +1663,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) for (i = 1; i < USBA_NR_ENDPOINTS; i++) if (dma_status & (1 << i)) - usba_dma_irq(udc, &usba_ep[i]); + usba_dma_irq(udc, &udc->usba_ep[i]); } ep_status = USBA_BFEXT(EPT_INT, status); @@ -1677,10 +1672,10 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) for (i = 0; i < USBA_NR_ENDPOINTS; i++) if (ep_status & (1 << i)) { - if (ep_is_control(&usba_ep[i])) - usba_control_irq(udc, &usba_ep[i]); + if (ep_is_control(&udc->usba_ep[i])) + usba_control_irq(udc, &udc->usba_ep[i]); else - usba_ep_irq(udc, &usba_ep[i]); + usba_ep_irq(udc, &udc->usba_ep[i]); } } @@ -1705,7 +1700,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) DBG(DBG_BUS, "%s bus reset detected\n", usb_speed_string(udc->gadget.speed)); - ep0 = &usba_ep[0]; + ep0 = &udc->usba_ep[0]; ep0->ep.desc = &usba_ep0_desc; ep0->state = WAIT_FOR_SETUP; usba_ep_writel(ep0, CFG, @@ -1777,6 +1772,7 @@ out: static int atmel_usba_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { + int ret; struct usba_udc *udc = container_of(gadget, struct usba_udc, gadget); unsigned long flags; @@ -1786,8 +1782,14 @@ static int atmel_usba_start(struct usb_gadget *gadget, udc->driver = driver; spin_unlock_irqrestore(&udc->lock, flags); - clk_enable(udc->pclk); - clk_enable(udc->hclk); + ret = clk_prepare_enable(udc->pclk); + if (ret) + return ret; + ret = clk_prepare_enable(udc->hclk); + if (ret) { + clk_disable_unprepare(udc->pclk); + return ret; + } DBG(DBG_GADGET, "registered driver `%s'\n", driver->driver.name); @@ -1827,25 +1829,166 @@ static int atmel_usba_stop(struct usb_gadget *gadget, udc->driver = NULL; - clk_disable(udc->hclk); - clk_disable(udc->pclk); + clk_disable_unprepare(udc->hclk); + clk_disable_unprepare(udc->pclk); DBG(DBG_GADGET, "unregistered driver `%s'\n", driver->driver.name); return 0; } +#ifdef CONFIG_OF +static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, + struct usba_udc *udc) +{ + u32 val; + const char *name; + enum of_gpio_flags flags; + struct device_node *np = pdev->dev.of_node; + struct device_node *pp; + int i, ret; + struct usba_ep *eps, *ep; + + udc->num_ep = 0; + + udc->vbus_pin = of_get_named_gpio_flags(np, "atmel,vbus-gpio", 0, + &flags); + udc->vbus_pin_inverted = (flags & OF_GPIO_ACTIVE_LOW) ? 1 : 0; + + pp = NULL; + while ((pp = of_get_next_child(np, pp))) + udc->num_ep++; + + eps = devm_kzalloc(&pdev->dev, sizeof(struct usba_ep) * udc->num_ep, + GFP_KERNEL); + if (!eps) + return ERR_PTR(-ENOMEM); + + udc->gadget.ep0 = &eps[0].ep; + + INIT_LIST_HEAD(&eps[0].ep.ep_list); + + pp = NULL; + i = 0; + while ((pp = of_get_next_child(np, pp))) { + ep = &eps[i]; + + ret = of_property_read_u32(pp, "reg", &val); + if (ret) { + dev_err(&pdev->dev, "of_probe: reg error(%d)\n", ret); + goto err; + } + ep->index = val; + + ret = of_property_read_u32(pp, "atmel,fifo-size", &val); + if (ret) { + dev_err(&pdev->dev, "of_probe: fifo-size error(%d)\n", ret); + goto err; + } + ep->fifo_size = val; + + ret = of_property_read_u32(pp, "atmel,nb-banks", &val); + if (ret) { + dev_err(&pdev->dev, "of_probe: nb-banks error(%d)\n", ret); + goto err; + } + ep->nr_banks = val; + + ep->can_dma = of_property_read_bool(pp, "atmel,can-dma"); + ep->can_isoc = of_property_read_bool(pp, "atmel,can-isoc"); + + ret = of_property_read_string(pp, "name", &name); + ep->ep.name = name; + + ep->ep_regs = udc->regs + USBA_EPT_BASE(i); + ep->dma_regs = udc->regs + USBA_DMA_BASE(i); + ep->fifo = udc->fifo + USBA_FIFO_BASE(i); + ep->ep.ops = &usba_ep_ops; + ep->ep.maxpacket = ep->fifo_size; + ep->udc = udc; + INIT_LIST_HEAD(&ep->queue); + + if (i) + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); + + i++; + } + + return eps; +err: + return ERR_PTR(ret); +} +#else +static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, + struct usba_udc *udc) +{ + return ERR_PTR(-ENOSYS); +} +#endif + +static struct usba_ep * usba_udc_pdata(struct platform_device *pdev, + struct usba_udc *udc) +{ + struct usba_platform_data *pdata = dev_get_platdata(&pdev->dev); + struct usba_ep *eps; + int i; + + if (!pdata) + return ERR_PTR(-ENXIO); + + eps = devm_kzalloc(&pdev->dev, sizeof(struct usba_ep) * pdata->num_ep, + GFP_KERNEL); + if (!eps) + return ERR_PTR(-ENOMEM); + + udc->gadget.ep0 = &eps[0].ep; + + udc->vbus_pin = pdata->vbus_pin; + udc->vbus_pin_inverted = pdata->vbus_pin_inverted; + udc->num_ep = pdata->num_ep; + + INIT_LIST_HEAD(&eps[0].ep.ep_list); + + for (i = 0; i < pdata->num_ep; i++) { + struct usba_ep *ep = &eps[i]; + + ep->ep_regs = udc->regs + USBA_EPT_BASE(i); + ep->dma_regs = udc->regs + USBA_DMA_BASE(i); + ep->fifo = udc->fifo + USBA_FIFO_BASE(i); + ep->ep.ops = &usba_ep_ops; + ep->ep.name = pdata->ep[i].name; + ep->fifo_size = ep->ep.maxpacket = pdata->ep[i].fifo_size; + ep->udc = udc; + INIT_LIST_HEAD(&ep->queue); + ep->nr_banks = pdata->ep[i].nr_banks; + ep->index = pdata->ep[i].index; + ep->can_dma = pdata->ep[i].can_dma; + ep->can_isoc = pdata->ep[i].can_isoc; + + if (i) + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); + } + + return eps; +} + static int __init usba_udc_probe(struct platform_device *pdev) { - struct usba_platform_data *pdata = pdev->dev.platform_data; struct resource *regs, *fifo; struct clk *pclk, *hclk; - struct usba_udc *udc = &the_udc; + struct usba_udc *udc; int irq, ret, i; + udc = devm_kzalloc(&pdev->dev, sizeof(*udc), GFP_KERNEL); + if (!udc) + return -ENOMEM; + + udc->gadget = usba_gadget_template; + INIT_LIST_HEAD(&udc->gadget.ep_list); + regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID); fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID); - if (!regs || !fifo || !pdata) + if (!regs || !fifo) return -ENXIO; irq = platform_get_irq(pdev, 0); @@ -1886,51 +2029,23 @@ static int __init usba_udc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, udc); /* Make sure we start from a clean slate */ - clk_enable(pclk); + ret = clk_prepare_enable(pclk); + if (ret) { + dev_err(&pdev->dev, "Unable to enable pclk, aborting.\n"); + goto err_clk_enable; + } toggle_bias(0); usba_writel(udc, CTRL, USBA_DISABLE_MASK); - clk_disable(pclk); - - usba_ep = kzalloc(sizeof(struct usba_ep) * pdata->num_ep, - GFP_KERNEL); - if (!usba_ep) - goto err_alloc_ep; + clk_disable_unprepare(pclk); - the_udc.gadget.ep0 = &usba_ep[0].ep; - - INIT_LIST_HEAD(&usba_ep[0].ep.ep_list); - usba_ep[0].ep_regs = udc->regs + USBA_EPT_BASE(0); - usba_ep[0].dma_regs = udc->regs + USBA_DMA_BASE(0); - usba_ep[0].fifo = udc->fifo + USBA_FIFO_BASE(0); - usba_ep[0].ep.ops = &usba_ep_ops; - usba_ep[0].ep.name = pdata->ep[0].name; - usba_ep[0].ep.maxpacket = pdata->ep[0].fifo_size; - usba_ep[0].udc = &the_udc; - INIT_LIST_HEAD(&usba_ep[0].queue); - usba_ep[0].fifo_size = pdata->ep[0].fifo_size; - usba_ep[0].nr_banks = pdata->ep[0].nr_banks; - usba_ep[0].index = pdata->ep[0].index; - usba_ep[0].can_dma = pdata->ep[0].can_dma; - usba_ep[0].can_isoc = pdata->ep[0].can_isoc; - - for (i = 1; i < pdata->num_ep; i++) { - struct usba_ep *ep = &usba_ep[i]; - - ep->ep_regs = udc->regs + USBA_EPT_BASE(i); - ep->dma_regs = udc->regs + USBA_DMA_BASE(i); - ep->fifo = udc->fifo + USBA_FIFO_BASE(i); - ep->ep.ops = &usba_ep_ops; - ep->ep.name = pdata->ep[i].name; - ep->ep.maxpacket = pdata->ep[i].fifo_size; - ep->udc = &the_udc; - INIT_LIST_HEAD(&ep->queue); - ep->fifo_size = pdata->ep[i].fifo_size; - ep->nr_banks = pdata->ep[i].nr_banks; - ep->index = pdata->ep[i].index; - ep->can_dma = pdata->ep[i].can_dma; - ep->can_isoc = pdata->ep[i].can_isoc; + if (pdev->dev.of_node) + udc->usba_ep = atmel_udc_of_init(pdev, udc); + else + udc->usba_ep = usba_udc_pdata(pdev, udc); - list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); + if (IS_ERR(udc->usba_ep)) { + ret = PTR_ERR(udc->usba_ep); + goto err_alloc_ep; } ret = request_irq(irq, usba_udc_irq, 0, "atmel_usba_udc", udc); @@ -1941,16 +2056,12 @@ static int __init usba_udc_probe(struct platform_device *pdev) } udc->irq = irq; - if (gpio_is_valid(pdata->vbus_pin)) { - if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) { - udc->vbus_pin = pdata->vbus_pin; - udc->vbus_pin_inverted = pdata->vbus_pin_inverted; - + if (gpio_is_valid(udc->vbus_pin)) { + if (!devm_gpio_request(&pdev->dev, udc->vbus_pin, "atmel_usba_udc")) { ret = request_irq(gpio_to_irq(udc->vbus_pin), usba_vbus_irq, 0, "atmel_usba_udc", udc); if (ret) { - gpio_free(udc->vbus_pin); udc->vbus_pin = -ENODEV; dev_warn(&udc->pdev->dev, "failed to request vbus irq; " @@ -1969,21 +2080,19 @@ static int __init usba_udc_probe(struct platform_device *pdev) goto err_add_udc; usba_init_debugfs(udc); - for (i = 1; i < pdata->num_ep; i++) - usba_ep_init_debugfs(udc, &usba_ep[i]); + for (i = 1; i < udc->num_ep; i++) + usba_ep_init_debugfs(udc, &udc->usba_ep[i]); return 0; err_add_udc: - if (gpio_is_valid(pdata->vbus_pin)) { + if (gpio_is_valid(udc->vbus_pin)) free_irq(gpio_to_irq(udc->vbus_pin), udc); - gpio_free(udc->vbus_pin); - } free_irq(irq, udc); err_request_irq: - kfree(usba_ep); err_alloc_ep: +err_clk_enable: iounmap(udc->fifo); err_map_fifo: iounmap(udc->regs); @@ -1999,23 +2108,20 @@ static int __exit usba_udc_remove(struct platform_device *pdev) { struct usba_udc *udc; int i; - struct usba_platform_data *pdata = pdev->dev.platform_data; udc = platform_get_drvdata(pdev); usb_del_gadget_udc(&udc->gadget); - for (i = 1; i < pdata->num_ep; i++) - usba_ep_cleanup_debugfs(&usba_ep[i]); + for (i = 1; i < udc->num_ep; i++) + usba_ep_cleanup_debugfs(&udc->usba_ep[i]); usba_cleanup_debugfs(udc); if (gpio_is_valid(udc->vbus_pin)) { free_irq(gpio_to_irq(udc->vbus_pin), udc); - gpio_free(udc->vbus_pin); } free_irq(udc->irq, udc); - kfree(usba_ep); iounmap(udc->fifo); iounmap(udc->regs); clk_put(udc->hclk); @@ -2024,11 +2130,21 @@ static int __exit usba_udc_remove(struct platform_device *pdev) return 0; } +#if defined(CONFIG_OF) +static const struct of_device_id atmel_udc_dt_ids[] = { + { .compatible = "atmel,at91sam9rl-udc" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, atmel_udc_dt_ids); +#endif + static struct platform_driver udc_driver = { .remove = __exit_p(usba_udc_remove), .driver = { .name = "atmel_usba_udc", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(atmel_udc_dt_ids), }, }; diff --git a/drivers/usb/gadget/atmel_usba_udc.h b/drivers/usb/gadget/atmel_usba_udc.h index d65a61851d3d..2922db50befe 100644 --- a/drivers/usb/gadget/atmel_usba_udc.h +++ b/drivers/usb/gadget/atmel_usba_udc.h @@ -317,8 +317,10 @@ struct usba_udc { int irq; int vbus_pin; int vbus_pin_inverted; + int num_ep; struct clk *pclk; struct clk *hclk; + struct usba_ep *usba_ep; u16 devstatus; diff --git a/drivers/usb/gadget/bcm63xx_udc.c b/drivers/usb/gadget/bcm63xx_udc.c index fd24cb4540a4..c58fcf1ebe41 100644 --- a/drivers/usb/gadget/bcm63xx_udc.c +++ b/drivers/usb/gadget/bcm63xx_udc.c @@ -2313,7 +2313,7 @@ static void bcm63xx_udc_cleanup_debugfs(struct bcm63xx_udc *udc) static int bcm63xx_udc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct bcm63xx_usbd_platform_data *pd = dev->platform_data; + struct bcm63xx_usbd_platform_data *pd = dev_get_platdata(dev); struct bcm63xx_udc *udc; struct resource *res; int rc = -ENOMEM, i, irq; diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c index 2c5255182769..5a5acf22c694 100644 --- a/drivers/usb/gadget/cdc2.c +++ b/drivers/usb/gadget/cdc2.c @@ -15,6 +15,7 @@ #include "u_ether.h" #include "u_serial.h" +#include "u_ecm.h" #define DRIVER_DESC "CDC Composite Gadget" @@ -32,18 +33,9 @@ #define CDC_VENDOR_NUM 0x0525 /* NetChip */ #define CDC_PRODUCT_NUM 0xa4aa /* CDC Composite: ECM + ACM */ -/*-------------------------------------------------------------------------*/ USB_GADGET_COMPOSITE_OPTIONS(); -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "f_ecm.c" -#include "u_ether.c" +USB_ETHERNET_MODULE_PARAMETERS(); /*-------------------------------------------------------------------------*/ @@ -102,12 +94,13 @@ static struct usb_gadget_strings *dev_strings[] = { NULL, }; -static u8 hostaddr[ETH_ALEN]; -static struct eth_dev *the_dev; /*-------------------------------------------------------------------------*/ static struct usb_function *f_acm; static struct usb_function_instance *fi_serial; +static struct usb_function *f_ecm; +static struct usb_function_instance *fi_ecm; + /* * We _always_ have both CDC ECM and CDC ACM functions. */ @@ -120,13 +113,27 @@ static int __init cdc_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - status = ecm_bind_config(c, hostaddr, the_dev); - if (status < 0) - return status; + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) { + status = PTR_ERR(fi_ecm); + goto err_func_ecm; + } + + f_ecm = usb_get_function(fi_ecm); + if (IS_ERR(f_ecm)) { + status = PTR_ERR(f_ecm); + goto err_get_ecm; + } + + status = usb_add_function(c, f_ecm); + if (status) + goto err_add_ecm; fi_serial = usb_get_function_instance("acm"); - if (IS_ERR(fi_serial)) - return PTR_ERR(fi_serial); + if (IS_ERR(fi_serial)) { + status = PTR_ERR(fi_serial); + goto err_get_acm; + } f_acm = usb_get_function(fi_serial); if (IS_ERR(f_acm)) { @@ -136,12 +143,21 @@ static int __init cdc_do_config(struct usb_configuration *c) status = usb_add_function(c, f_acm); if (status) - goto err_conf; + goto err_add_acm; + return 0; -err_conf: + +err_add_acm: usb_put_function(f_acm); err_func_acm: usb_put_function_instance(fi_serial); +err_get_acm: + usb_remove_function(c, f_ecm); +err_add_ecm: + usb_put_function(f_ecm); +err_get_ecm: + usb_put_function_instance(fi_ecm); +err_func_ecm: return status; } @@ -157,6 +173,7 @@ static struct usb_configuration cdc_config_driver = { static int __init cdc_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; + struct f_ecm_opts *ecm_opts; int status; if (!can_support_ecm(cdev->gadget)) { @@ -165,10 +182,23 @@ static int __init cdc_bind(struct usb_composite_dev *cdev) return -EINVAL; } - /* set up network link layer */ - the_dev = gether_setup(cdev->gadget, hostaddr); - if (IS_ERR(the_dev)) - return PTR_ERR(the_dev); + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) + return PTR_ERR(fi_ecm); + + ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); + + gether_set_qmult(ecm_opts->net, qmult); + if (!gether_set_host_addr(ecm_opts->net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(ecm_opts->net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); + + fi_serial = usb_get_function_instance("acm"); + if (IS_ERR(fi_serial)) { + status = PTR_ERR(fi_serial); + goto fail; + } /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. @@ -192,7 +222,9 @@ static int __init cdc_bind(struct usb_composite_dev *cdev) return 0; fail1: - gether_cleanup(the_dev); + usb_put_function_instance(fi_serial); +fail: + usb_put_function_instance(fi_ecm); return status; } @@ -200,7 +232,10 @@ static int __exit cdc_unbind(struct usb_composite_dev *cdev) { usb_put_function(f_acm); usb_put_function_instance(fi_serial); - gether_cleanup(the_dev); + if (!IS_ERR_OR_NULL(f_ecm)) + usb_put_function(f_ecm); + if (!IS_ERR_OR_NULL(fi_ecm)) + usb_put_function_instance(fi_ecm); return 0; } diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 55f4df60f327..d4f0f3305759 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1497,17 +1497,15 @@ void composite_disconnect(struct usb_gadget *gadget) /*-------------------------------------------------------------------------*/ -static ssize_t composite_show_suspended(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t suspended_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_gadget *gadget = dev_to_usb_gadget(dev); struct usb_composite_dev *cdev = get_gadget_data(gadget); return sprintf(buf, "%d\n", cdev->suspended); } - -static DEVICE_ATTR(suspended, 0444, composite_show_suspended, NULL); +static DEVICE_ATTR_RO(suspended); static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver) { diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 80e7f75a56c7..8f0d6141e5e6 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -859,8 +859,10 @@ static int configfs_composite_bind(struct usb_gadget *gadget, list_for_each_entry_safe(f, tmp, &cfg->func_list, list) { list_del(&f->list); ret = usb_add_function(c, f); - if (ret) + if (ret) { + list_add(&f->list, &cfg->func_list); goto err_purge_funcs; + } } usb_ep_autoconfig_reset(cdev->gadget); } diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index c588e8e486e5..06ecd08fd57a 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -868,7 +868,7 @@ static const struct usb_gadget_ops dummy_ops = { /*-------------------------------------------------------------------------*/ /* "function" sysfs attribute */ -static ssize_t show_function(struct device *dev, struct device_attribute *attr, +static ssize_t function_show(struct device *dev, struct device_attribute *attr, char *buf) { struct dummy *dum = gadget_dev_to_dummy(dev); @@ -877,7 +877,7 @@ static ssize_t show_function(struct device *dev, struct device_attribute *attr, return 0; return scnprintf(buf, PAGE_SIZE, "%s\n", dum->driver->function); } -static DEVICE_ATTR(function, S_IRUGO, show_function, NULL); +static DEVICE_ATTR_RO(function); /*-------------------------------------------------------------------------*/ @@ -2290,7 +2290,7 @@ static inline ssize_t show_urb(char *buf, size_t size, struct urb *urb) urb->actual_length, urb->transfer_buffer_length); } -static ssize_t show_urbs(struct device *dev, struct device_attribute *attr, +static ssize_t urbs_show(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_hcd *hcd = dev_get_drvdata(dev); @@ -2311,7 +2311,7 @@ static ssize_t show_urbs(struct device *dev, struct device_attribute *attr, return size; } -static DEVICE_ATTR(urbs, S_IRUGO, show_urbs, NULL); +static DEVICE_ATTR_RO(urbs); static int dummy_start_ss(struct dummy_hcd *dum_hcd) { diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index 56c8ecae9bc3..c1c113ef950c 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -14,6 +14,7 @@ /* #define VERBOSE_DEBUG */ #include <linux/kernel.h> +#include <linux/netdevice.h> #if defined USB_ETH_RNDIS # undef USB_ETH_RNDIS @@ -91,27 +92,23 @@ static inline bool has_rndis(void) #endif } -/*-------------------------------------------------------------------------*/ +#include <linux/module.h> -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "f_ecm.c" -#include "f_subset.c" +#include "u_ecm.h" +#include "u_gether.h" #ifdef USB_ETH_RNDIS -#include "f_rndis.c" -#include "rndis.c" +#include "u_rndis.h" +#include "rndis.h" +#else +#define rndis_borrow_net(...) do {} while (0) #endif -#include "f_eem.c" -#include "u_ether.c" +#include "u_eem.h" /*-------------------------------------------------------------------------*/ USB_GADGET_COMPOSITE_OPTIONS(); +USB_ETHERNET_MODULE_PARAMETERS(); + /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! * Instead: allocate your own, using normal USB-IF procedures. */ @@ -206,8 +203,18 @@ static struct usb_gadget_strings *dev_strings[] = { NULL, }; -static u8 hostaddr[ETH_ALEN]; -static struct eth_dev *the_dev; +static struct usb_function_instance *fi_ecm; +static struct usb_function *f_ecm; + +static struct usb_function_instance *fi_eem; +static struct usb_function *f_eem; + +static struct usb_function_instance *fi_geth; +static struct usb_function *f_geth; + +static struct usb_function_instance *fi_rndis; +static struct usb_function *f_rndis; + /*-------------------------------------------------------------------------*/ /* @@ -217,6 +224,8 @@ static struct eth_dev *the_dev; */ static int __init rndis_do_config(struct usb_configuration *c) { + int status; + /* FIXME alloc iConfiguration string, set it in c->strings */ if (gadget_is_otg(c->cdev->gadget)) { @@ -224,7 +233,15 @@ static int __init rndis_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - return rndis_bind_config(c, hostaddr, the_dev); + f_rndis = usb_get_function(fi_rndis); + if (IS_ERR(f_rndis)) + return PTR_ERR(f_rndis); + + status = usb_add_function(c, f_rndis); + if (status < 0) + usb_put_function(f_rndis); + + return status; } static struct usb_configuration rndis_config_driver = { @@ -249,6 +266,8 @@ MODULE_PARM_DESC(use_eem, "use CDC EEM mode"); */ static int __init eth_do_config(struct usb_configuration *c) { + int status = 0; + /* FIXME alloc iConfiguration string, set it in c->strings */ if (gadget_is_otg(c->cdev->gadget)) { @@ -256,12 +275,38 @@ static int __init eth_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - if (use_eem) - return eem_bind_config(c, the_dev); - else if (can_support_ecm(c->cdev->gadget)) - return ecm_bind_config(c, hostaddr, the_dev); - else - return geth_bind_config(c, hostaddr, the_dev); + if (use_eem) { + f_eem = usb_get_function(fi_eem); + if (IS_ERR(f_eem)) + return PTR_ERR(f_eem); + + status = usb_add_function(c, f_eem); + if (status < 0) + usb_put_function(f_eem); + + return status; + } else if (can_support_ecm(c->cdev->gadget)) { + f_ecm = usb_get_function(fi_ecm); + if (IS_ERR(f_ecm)) + return PTR_ERR(f_ecm); + + status = usb_add_function(c, f_ecm); + if (status < 0) + usb_put_function(f_ecm); + + return status; + } else { + f_geth = usb_get_function(fi_geth); + if (IS_ERR(f_geth)) + return PTR_ERR(f_geth); + + status = usb_add_function(c, f_geth); + if (status < 0) + usb_put_function(f_geth); + + return status; + } + } static struct usb_configuration eth_config_driver = { @@ -276,24 +321,50 @@ static struct usb_configuration eth_config_driver = { static int __init eth_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; + struct f_eem_opts *eem_opts = NULL; + struct f_ecm_opts *ecm_opts = NULL; + struct f_gether_opts *geth_opts = NULL; + struct net_device *net; int status; - /* set up network link layer */ - the_dev = gether_setup(cdev->gadget, hostaddr); - if (IS_ERR(the_dev)) - return PTR_ERR(the_dev); - /* set up main config label and device descriptor */ if (use_eem) { /* EEM */ + fi_eem = usb_get_function_instance("eem"); + if (IS_ERR(fi_eem)) + return PTR_ERR(fi_eem); + + eem_opts = container_of(fi_eem, struct f_eem_opts, func_inst); + + net = eem_opts->net; + eth_config_driver.label = "CDC Ethernet (EEM)"; device_desc.idVendor = cpu_to_le16(EEM_VENDOR_NUM); device_desc.idProduct = cpu_to_le16(EEM_PRODUCT_NUM); - } else if (can_support_ecm(cdev->gadget)) { + } else if (can_support_ecm(gadget)) { /* ECM */ + + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) + return PTR_ERR(fi_ecm); + + ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); + + net = ecm_opts->net; + eth_config_driver.label = "CDC Ethernet (ECM)"; } else { /* CDC Subset */ + + fi_geth = usb_get_function_instance("geth"); + if (IS_ERR(fi_geth)) + return PTR_ERR(fi_geth); + + geth_opts = container_of(fi_geth, struct f_gether_opts, + func_inst); + + net = geth_opts->net; + eth_config_driver.label = "CDC Subset/SAFE"; device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM); @@ -302,8 +373,34 @@ static int __init eth_bind(struct usb_composite_dev *cdev) device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; } + gether_set_qmult(net, qmult); + if (!gether_set_host_addr(net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); + if (has_rndis()) { /* RNDIS plus ECM-or-Subset */ + gether_set_gadget(net, cdev->gadget); + status = gether_register_netdev(net); + if (status) + goto fail; + + if (use_eem) + eem_opts->bound = true; + else if (can_support_ecm(gadget)) + ecm_opts->bound = true; + else + geth_opts->bound = true; + + fi_rndis = usb_get_function_instance("rndis"); + if (IS_ERR(fi_rndis)) { + status = PTR_ERR(fi_rndis); + goto fail; + } + + rndis_borrow_net(fi_rndis, net); + device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM); device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM); device_desc.bNumConfigurations = 2; @@ -315,7 +412,7 @@ static int __init eth_bind(struct usb_composite_dev *cdev) status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) - goto fail; + goto fail1; device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; @@ -324,12 +421,12 @@ static int __init eth_bind(struct usb_composite_dev *cdev) status = usb_add_config(cdev, &rndis_config_driver, rndis_do_config); if (status < 0) - goto fail; + goto fail1; } status = usb_add_config(cdev, ð_config_driver, eth_do_config); if (status < 0) - goto fail; + goto fail1; usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n", @@ -337,14 +434,35 @@ static int __init eth_bind(struct usb_composite_dev *cdev) return 0; +fail1: + if (has_rndis()) + usb_put_function_instance(fi_rndis); fail: - gether_cleanup(the_dev); + if (use_eem) + usb_put_function_instance(fi_eem); + else if (can_support_ecm(gadget)) + usb_put_function_instance(fi_ecm); + else + usb_put_function_instance(fi_geth); return status; } static int __exit eth_unbind(struct usb_composite_dev *cdev) { - gether_cleanup(the_dev); + if (has_rndis()) { + usb_put_function(f_rndis); + usb_put_function_instance(fi_rndis); + } + if (use_eem) { + usb_put_function(f_eem); + usb_put_function_instance(fi_eem); + } else if (can_support_ecm(cdev->gadget)) { + usb_put_function(f_ecm); + usb_put_function_instance(fi_ecm); + } else { + usb_put_function(f_geth); + usb_put_function_instance(fi_geth); + } return 0; } diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index 4b7e33e5d9c6..ab1065afbbd0 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -285,6 +285,7 @@ static struct usb_string acm_string_defs[] = { [ACM_CTRL_IDX].s = "CDC Abstract Control Model (ACM)", [ACM_DATA_IDX].s = "CDC ACM Data", [ACM_IAD_IDX ].s = "CDC Serial", + { } /* end of list */ }; static struct usb_gadget_strings acm_string_table = { diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c index abf8a31ae146..edab45da3741 100644 --- a/drivers/usb/gadget/f_ecm.c +++ b/drivers/usb/gadget/f_ecm.c @@ -14,10 +14,13 @@ #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include "u_ether.h" +#include "u_ether_configfs.h" +#include "u_ecm.h" /* @@ -684,9 +687,44 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_ecm *ecm = func_to_ecm(f); + struct usb_string *us; int status; struct usb_ep *ep; +#ifndef USBF_ECM_INCLUDED + struct f_ecm_opts *ecm_opts; + + if (!can_support_ecm(cdev->gadget)) + return -EINVAL; + + ecm_opts = container_of(f->fi, struct f_ecm_opts, func_inst); + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to ecm_opts->bound access + */ + if (!ecm_opts->bound) { + mutex_lock(&ecm_opts->lock); + gether_set_gadget(ecm_opts->net, cdev->gadget); + status = gether_register_netdev(ecm_opts->net); + mutex_unlock(&ecm_opts->lock); + if (status) + return status; + ecm_opts->bound = true; + } +#endif + us = usb_gstrings_attach(cdev, ecm_strings, + ARRAY_SIZE(ecm_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + ecm_control_intf.iInterface = us[0].id; + ecm_data_intf.iInterface = us[2].id; + ecm_desc.iMACAddress = us[1].id; + ecm_iad_descriptor.iFunction = us[3].id; + /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -796,14 +834,15 @@ fail: return status; } +#ifdef USBF_ECM_INCLUDED + static void -ecm_unbind(struct usb_configuration *c, struct usb_function *f) +ecm_old_unbind(struct usb_configuration *c, struct usb_function *f) { struct f_ecm *ecm = func_to_ecm(f); DBG(c->cdev, "ecm unbind\n"); - ecm_string_defs[0].id = 0; usb_free_all_descriptors(f); kfree(ecm->notify_req->buf); @@ -834,17 +873,6 @@ ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], if (!can_support_ecm(c->cdev->gadget) || !ethaddr) return -EINVAL; - if (ecm_string_defs[0].id == 0) { - status = usb_string_ids_tab(c->cdev, ecm_string_defs); - if (status) - return status; - - ecm_control_intf.iInterface = ecm_string_defs[0].id; - ecm_data_intf.iInterface = ecm_string_defs[2].id; - ecm_desc.iMACAddress = ecm_string_defs[1].id; - ecm_iad_descriptor.iFunction = ecm_string_defs[3].id; - } - /* allocate and initialize one new instance */ ecm = kzalloc(sizeof *ecm, GFP_KERNEL); if (!ecm) @@ -858,10 +886,9 @@ ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], ecm->port.cdc_filter = DEFAULT_FILTER; ecm->port.func.name = "cdc_ethernet"; - ecm->port.func.strings = ecm_strings; /* descriptors are per-instance copies */ ecm->port.func.bind = ecm_bind; - ecm->port.func.unbind = ecm_unbind; + ecm->port.func.unbind = ecm_old_unbind; ecm->port.func.set_alt = ecm_set_alt; ecm->port.func.get_alt = ecm_get_alt; ecm->port.func.setup = ecm_setup; @@ -872,3 +899,146 @@ ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], kfree(ecm); return status; } + +#else + +static inline struct f_ecm_opts *to_f_ecm_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_ecm_opts, + func_inst.group); +} + +/* f_ecm_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(ecm); + +/* f_ecm_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(ecm); + +/* f_ecm_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(ecm); + +/* f_ecm_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(ecm); + +/* f_ecm_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(ecm); + +static struct configfs_attribute *ecm_attrs[] = { + &f_ecm_opts_dev_addr.attr, + &f_ecm_opts_host_addr.attr, + &f_ecm_opts_qmult.attr, + &f_ecm_opts_ifname.attr, + NULL, +}; + +static struct config_item_type ecm_func_type = { + .ct_item_ops = &ecm_item_ops, + .ct_attrs = ecm_attrs, + .ct_owner = THIS_MODULE, +}; + +static void ecm_free_inst(struct usb_function_instance *f) +{ + struct f_ecm_opts *opts; + + opts = container_of(f, struct f_ecm_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + kfree(opts); +} + +static struct usb_function_instance *ecm_alloc_inst(void) +{ + struct f_ecm_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = ecm_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); + } + + config_group_init_type_name(&opts->func_inst.group, "", &ecm_func_type); + + return &opts->func_inst; +} + +static void ecm_free(struct usb_function *f) +{ + struct f_ecm *ecm; + struct f_ecm_opts *opts; + + ecm = func_to_ecm(f); + opts = container_of(f->fi, struct f_ecm_opts, func_inst); + kfree(ecm); + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); +} + +static void ecm_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_ecm *ecm = func_to_ecm(f); + + DBG(c->cdev, "ecm unbind\n"); + + usb_free_all_descriptors(f); + + kfree(ecm->notify_req->buf); + usb_ep_free_request(ecm->notify, ecm->notify_req); +} + +struct usb_function *ecm_alloc(struct usb_function_instance *fi) +{ + struct f_ecm *ecm; + struct f_ecm_opts *opts; + int status; + + /* allocate and initialize one new instance */ + ecm = kzalloc(sizeof(*ecm), GFP_KERNEL); + if (!ecm) + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_ecm_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; + + /* export host's Ethernet address in CDC format */ + status = gether_get_host_addr_cdc(opts->net, ecm->ethaddr, + sizeof(ecm->ethaddr)); + if (status < 12) { + kfree(ecm); + mutex_unlock(&opts->lock); + return ERR_PTR(-EINVAL); + } + ecm_string_defs[1].s = ecm->ethaddr; + + ecm->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); + ecm->port.cdc_filter = DEFAULT_FILTER; + + ecm->port.func.name = "cdc_ethernet"; + /* descriptors are per-instance copies */ + ecm->port.func.bind = ecm_bind; + ecm->port.func.unbind = ecm_unbind; + ecm->port.func.set_alt = ecm_set_alt; + ecm->port.func.get_alt = ecm_get_alt; + ecm->port.func.setup = ecm_setup; + ecm->port.func.disable = ecm_disable; + ecm->port.func.free_func = ecm_free; + + return &ecm->port.func; +} + +DECLARE_USB_FUNCTION_INIT(ecm, ecm_alloc_inst, ecm_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); + +#endif diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c index f4e0bbef602a..d00392d879db 100644 --- a/drivers/usb/gadget/f_eem.c +++ b/drivers/usb/gadget/f_eem.c @@ -12,12 +12,15 @@ */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include <linux/crc32.h> #include <linux/slab.h> #include "u_ether.h" +#include "u_ether_configfs.h" +#include "u_eem.h" #define EEM_HLEN 2 @@ -40,7 +43,7 @@ static inline struct f_eem *func_to_eem(struct usb_function *f) /* interface descriptor: */ -static struct usb_interface_descriptor eem_intf __initdata = { +static struct usb_interface_descriptor eem_intf = { .bLength = sizeof eem_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -54,7 +57,7 @@ static struct usb_interface_descriptor eem_intf __initdata = { /* full speed support: */ -static struct usb_endpoint_descriptor eem_fs_in_desc __initdata = { +static struct usb_endpoint_descriptor eem_fs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -62,7 +65,7 @@ static struct usb_endpoint_descriptor eem_fs_in_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor eem_fs_out_desc __initdata = { +static struct usb_endpoint_descriptor eem_fs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -70,7 +73,7 @@ static struct usb_endpoint_descriptor eem_fs_out_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *eem_fs_function[] __initdata = { +static struct usb_descriptor_header *eem_fs_function[] = { /* CDC EEM control descriptors */ (struct usb_descriptor_header *) &eem_intf, (struct usb_descriptor_header *) &eem_fs_in_desc, @@ -80,7 +83,7 @@ static struct usb_descriptor_header *eem_fs_function[] __initdata = { /* high speed support: */ -static struct usb_endpoint_descriptor eem_hs_in_desc __initdata = { +static struct usb_endpoint_descriptor eem_hs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -89,7 +92,7 @@ static struct usb_endpoint_descriptor eem_hs_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor eem_hs_out_desc __initdata = { +static struct usb_endpoint_descriptor eem_hs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -98,7 +101,7 @@ static struct usb_endpoint_descriptor eem_hs_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *eem_hs_function[] __initdata = { +static struct usb_descriptor_header *eem_hs_function[] = { /* CDC EEM control descriptors */ (struct usb_descriptor_header *) &eem_intf, (struct usb_descriptor_header *) &eem_hs_in_desc, @@ -108,7 +111,7 @@ static struct usb_descriptor_header *eem_hs_function[] __initdata = { /* super speed support: */ -static struct usb_endpoint_descriptor eem_ss_in_desc __initdata = { +static struct usb_endpoint_descriptor eem_ss_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -117,7 +120,7 @@ static struct usb_endpoint_descriptor eem_ss_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(1024), }; -static struct usb_endpoint_descriptor eem_ss_out_desc __initdata = { +static struct usb_endpoint_descriptor eem_ss_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -126,7 +129,7 @@ static struct usb_endpoint_descriptor eem_ss_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(1024), }; -static struct usb_ss_ep_comp_descriptor eem_ss_bulk_comp_desc __initdata = { +static struct usb_ss_ep_comp_descriptor eem_ss_bulk_comp_desc = { .bLength = sizeof eem_ss_bulk_comp_desc, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, @@ -135,7 +138,7 @@ static struct usb_ss_ep_comp_descriptor eem_ss_bulk_comp_desc __initdata = { /* .bmAttributes = 0, */ }; -static struct usb_descriptor_header *eem_ss_function[] __initdata = { +static struct usb_descriptor_header *eem_ss_function[] = { /* CDC EEM control descriptors */ (struct usb_descriptor_header *) &eem_intf, (struct usb_descriptor_header *) &eem_ss_in_desc, @@ -242,14 +245,40 @@ static void eem_disable(struct usb_function *f) /* EEM function driver setup/binding */ -static int __init -eem_bind(struct usb_configuration *c, struct usb_function *f) +static int eem_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_eem *eem = func_to_eem(f); + struct usb_string *us; int status; struct usb_ep *ep; + struct f_eem_opts *eem_opts; + + eem_opts = container_of(f->fi, struct f_eem_opts, func_inst); + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to eem_opts->bound access + */ + if (!eem_opts->bound) { + mutex_lock(&eem_opts->lock); + gether_set_gadget(eem_opts->net, cdev->gadget); + status = gether_register_netdev(eem_opts->net); + mutex_unlock(&eem_opts->lock); + if (status) + return status; + eem_opts->bound = true; + } + + us = usb_gstrings_attach(cdev, eem_strings, + ARRAY_SIZE(eem_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + eem_intf.iInterface = us[0].id; + /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -307,17 +336,6 @@ fail: return status; } -static void -eem_unbind(struct usb_configuration *c, struct usb_function *f) -{ - struct f_eem *eem = func_to_eem(f); - - DBG(c->cdev, "eem unbind\n"); - - usb_free_all_descriptors(f); - kfree(eem); -} - static void eem_cmd_complete(struct usb_ep *ep, struct usb_request *req) { struct sk_buff *skb = (struct sk_buff *)req->context; @@ -518,55 +536,127 @@ error: return status; } -/** - * eem_bind_config - add CDC Ethernet (EEM) network link to a configuration - * @c: the configuration to support the network link - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -int __init eem_bind_config(struct usb_configuration *c, struct eth_dev *dev) +static inline struct f_eem_opts *to_f_eem_opts(struct config_item *item) { - struct f_eem *eem; - int status; + return container_of(to_config_group(item), struct f_eem_opts, + func_inst.group); +} - /* maybe allocate device-global string IDs */ - if (eem_string_defs[0].id == 0) { +/* f_eem_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(eem); - /* control interface label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - eem_string_defs[0].id = status; - eem_intf.iInterface = status; +/* f_eem_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(eem); + +/* f_eem_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(eem); + +/* f_eem_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(eem); + +/* f_eem_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(eem); + +static struct configfs_attribute *eem_attrs[] = { + &f_eem_opts_dev_addr.attr, + &f_eem_opts_host_addr.attr, + &f_eem_opts_qmult.attr, + &f_eem_opts_ifname.attr, + NULL, +}; + +static struct config_item_type eem_func_type = { + .ct_item_ops = &eem_item_ops, + .ct_attrs = eem_attrs, + .ct_owner = THIS_MODULE, +}; + +static void eem_free_inst(struct usb_function_instance *f) +{ + struct f_eem_opts *opts; + + opts = container_of(f, struct f_eem_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + kfree(opts); +} + +static struct usb_function_instance *eem_alloc_inst(void) +{ + struct f_eem_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = eem_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); } + config_group_init_type_name(&opts->func_inst.group, "", &eem_func_type); + + return &opts->func_inst; +} + +static void eem_free(struct usb_function *f) +{ + struct f_eem *eem; + struct f_eem_opts *opts; + + eem = func_to_eem(f); + opts = container_of(f->fi, struct f_eem_opts, func_inst); + kfree(eem); + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); +} + +static void eem_unbind(struct usb_configuration *c, struct usb_function *f) +{ + DBG(c->cdev, "eem unbind\n"); + + usb_free_all_descriptors(f); +} + +struct usb_function *eem_alloc(struct usb_function_instance *fi) +{ + struct f_eem *eem; + struct f_eem_opts *opts; + /* allocate and initialize one new instance */ - eem = kzalloc(sizeof *eem, GFP_KERNEL); + eem = kzalloc(sizeof(*eem), GFP_KERNEL); if (!eem) - return -ENOMEM; + return ERR_PTR(-ENOMEM); - eem->port.ioport = dev; + opts = container_of(fi, struct f_eem_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; + + eem->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); eem->port.cdc_filter = DEFAULT_FILTER; eem->port.func.name = "cdc_eem"; - eem->port.func.strings = eem_strings; /* descriptors are per-instance copies */ eem->port.func.bind = eem_bind; eem->port.func.unbind = eem_unbind; eem->port.func.set_alt = eem_set_alt; eem->port.func.setup = eem_setup; eem->port.func.disable = eem_disable; + eem->port.func.free_func = eem_free; eem->port.wrap = eem_wrap; eem->port.unwrap = eem_unwrap; eem->port.header_len = EEM_HLEN; - status = usb_add_function(c, &eem->port.func); - if (status) - kfree(eem); - return status; + return &eem->port.func; } +DECLARE_USB_FUNCTION_INIT(eem, eem_alloc_inst, eem_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index f394f295d63d..1a66c5baa0d1 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -1417,8 +1417,8 @@ static void functionfs_unbind(struct ffs_data *ffs) usb_ep_free_request(ffs->gadget->ep0, ffs->ep0req); ffs->ep0req = NULL; ffs->gadget = NULL; - ffs_data_put(ffs); clear_bit(FFS_FL_BOUND, &ffs->flags); + ffs_data_put(ffs); } } diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 97666e8b1b95..313b835eedfd 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -413,6 +413,7 @@ static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep) /* Caller must hold fsg->lock */ static void wakeup_thread(struct fsg_common *common) { + smp_wmb(); /* ensure the write of bh->state is complete */ /* Tell the main thread that something has happened */ common->thread_wakeup_needed = 1; if (common->thread_task) @@ -632,6 +633,7 @@ static int sleep_thread(struct fsg_common *common) } __set_current_state(TASK_RUNNING); common->thread_wakeup_needed = 0; + smp_rmb(); /* ensure the latest bh->state is visible */ return rc; } @@ -2576,14 +2578,12 @@ static int fsg_main_thread(void *common_) /*************************** DEVICE ATTRIBUTES ***************************/ -static DEVICE_ATTR(ro, 0644, fsg_show_ro, fsg_store_ro); -static DEVICE_ATTR(nofua, 0644, fsg_show_nofua, fsg_store_nofua); -static DEVICE_ATTR(file, 0644, fsg_show_file, fsg_store_file); +static DEVICE_ATTR_RW(ro); +static DEVICE_ATTR_RW(nofua); +static DEVICE_ATTR_RW(file); -static struct device_attribute dev_attr_ro_cdrom = - __ATTR(ro, 0444, fsg_show_ro, NULL); -static struct device_attribute dev_attr_file_nonremovable = - __ATTR(file, 0444, fsg_show_file, NULL); +static struct device_attribute dev_attr_ro_cdrom = __ATTR_RO(ro); +static struct device_attribute dev_attr_file_nonremovable = __ATTR_RO(file); /****************************** FSG COMMON ******************************/ @@ -2745,8 +2745,8 @@ buffhds_first_it: "%-8s%-16s%04x", cfg->vendor_name ?: "Linux", /* Assume product name dependent on the first LUN */ cfg->product_name ?: (common->luns->cdrom - ? "File-Stor Gadget" - : "File-CD Gadget"), + ? "File-CD Gadget" + : "File-Stor Gadget"), i); /* @@ -3041,12 +3041,12 @@ fsg_config_from_params(struct fsg_config *cfg, lun->filename = params->file_count > i && params->file[i][0] ? params->file[i] - : 0; + : NULL; } /* Let MSF use defaults */ - cfg->vendor_name = 0; - cfg->product_name = 0; + cfg->vendor_name = NULL; + cfg->product_name = NULL; cfg->ops = NULL; cfg->private_data = NULL; diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c index ee19bc8d0040..1c28fe13328a 100644 --- a/drivers/usb/gadget/f_ncm.c +++ b/drivers/usb/gadget/f_ncm.c @@ -16,6 +16,7 @@ */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include <linux/crc32.h> @@ -23,6 +24,8 @@ #include <linux/usb/cdc.h> #include "u_ether.h" +#include "u_ether_configfs.h" +#include "u_ncm.h" /* * This function is a "CDC Network Control Model" (CDC NCM) Ethernet link. @@ -125,7 +128,7 @@ static struct usb_cdc_ncm_ntb_parameters ntb_parameters = { #define NCM_STATUS_INTERVAL_MS 32 #define NCM_STATUS_BYTECOUNT 16 /* 8 byte header + data */ -static struct usb_interface_assoc_descriptor ncm_iad_desc __initdata = { +static struct usb_interface_assoc_descriptor ncm_iad_desc = { .bLength = sizeof ncm_iad_desc, .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, @@ -139,7 +142,7 @@ static struct usb_interface_assoc_descriptor ncm_iad_desc __initdata = { /* interface descriptor: */ -static struct usb_interface_descriptor ncm_control_intf __initdata = { +static struct usb_interface_descriptor ncm_control_intf = { .bLength = sizeof ncm_control_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -151,7 +154,7 @@ static struct usb_interface_descriptor ncm_control_intf __initdata = { /* .iInterface = DYNAMIC */ }; -static struct usb_cdc_header_desc ncm_header_desc __initdata = { +static struct usb_cdc_header_desc ncm_header_desc = { .bLength = sizeof ncm_header_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_HEADER_TYPE, @@ -159,7 +162,7 @@ static struct usb_cdc_header_desc ncm_header_desc __initdata = { .bcdCDC = cpu_to_le16(0x0110), }; -static struct usb_cdc_union_desc ncm_union_desc __initdata = { +static struct usb_cdc_union_desc ncm_union_desc = { .bLength = sizeof(ncm_union_desc), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_UNION_TYPE, @@ -167,7 +170,7 @@ static struct usb_cdc_union_desc ncm_union_desc __initdata = { /* .bSlaveInterface0 = DYNAMIC */ }; -static struct usb_cdc_ether_desc ecm_desc __initdata = { +static struct usb_cdc_ether_desc ecm_desc = { .bLength = sizeof ecm_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, @@ -182,7 +185,7 @@ static struct usb_cdc_ether_desc ecm_desc __initdata = { #define NCAPS (USB_CDC_NCM_NCAP_ETH_FILTER | USB_CDC_NCM_NCAP_CRC_MODE) -static struct usb_cdc_ncm_desc ncm_desc __initdata = { +static struct usb_cdc_ncm_desc ncm_desc = { .bLength = sizeof ncm_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_NCM_TYPE, @@ -194,7 +197,7 @@ static struct usb_cdc_ncm_desc ncm_desc __initdata = { /* the default data interface has no endpoints ... */ -static struct usb_interface_descriptor ncm_data_nop_intf __initdata = { +static struct usb_interface_descriptor ncm_data_nop_intf = { .bLength = sizeof ncm_data_nop_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -209,7 +212,7 @@ static struct usb_interface_descriptor ncm_data_nop_intf __initdata = { /* ... but the "real" data interface has two bulk endpoints */ -static struct usb_interface_descriptor ncm_data_intf __initdata = { +static struct usb_interface_descriptor ncm_data_intf = { .bLength = sizeof ncm_data_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -224,7 +227,7 @@ static struct usb_interface_descriptor ncm_data_intf __initdata = { /* full speed support: */ -static struct usb_endpoint_descriptor fs_ncm_notify_desc __initdata = { +static struct usb_endpoint_descriptor fs_ncm_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -234,7 +237,7 @@ static struct usb_endpoint_descriptor fs_ncm_notify_desc __initdata = { .bInterval = NCM_STATUS_INTERVAL_MS, }; -static struct usb_endpoint_descriptor fs_ncm_in_desc __initdata = { +static struct usb_endpoint_descriptor fs_ncm_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -242,7 +245,7 @@ static struct usb_endpoint_descriptor fs_ncm_in_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor fs_ncm_out_desc __initdata = { +static struct usb_endpoint_descriptor fs_ncm_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -250,7 +253,7 @@ static struct usb_endpoint_descriptor fs_ncm_out_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *ncm_fs_function[] __initdata = { +static struct usb_descriptor_header *ncm_fs_function[] = { (struct usb_descriptor_header *) &ncm_iad_desc, /* CDC NCM control descriptors */ (struct usb_descriptor_header *) &ncm_control_intf, @@ -269,7 +272,7 @@ static struct usb_descriptor_header *ncm_fs_function[] __initdata = { /* high speed support: */ -static struct usb_endpoint_descriptor hs_ncm_notify_desc __initdata = { +static struct usb_endpoint_descriptor hs_ncm_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -278,7 +281,7 @@ static struct usb_endpoint_descriptor hs_ncm_notify_desc __initdata = { .wMaxPacketSize = cpu_to_le16(NCM_STATUS_BYTECOUNT), .bInterval = USB_MS_TO_HS_INTERVAL(NCM_STATUS_INTERVAL_MS), }; -static struct usb_endpoint_descriptor hs_ncm_in_desc __initdata = { +static struct usb_endpoint_descriptor hs_ncm_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -287,7 +290,7 @@ static struct usb_endpoint_descriptor hs_ncm_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor hs_ncm_out_desc __initdata = { +static struct usb_endpoint_descriptor hs_ncm_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -296,7 +299,7 @@ static struct usb_endpoint_descriptor hs_ncm_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *ncm_hs_function[] __initdata = { +static struct usb_descriptor_header *ncm_hs_function[] = { (struct usb_descriptor_header *) &ncm_iad_desc, /* CDC NCM control descriptors */ (struct usb_descriptor_header *) &ncm_control_intf, @@ -1152,13 +1155,44 @@ static void ncm_close(struct gether *geth) /* ethernet function driver setup/binding */ -static int __init -ncm_bind(struct usb_configuration *c, struct usb_function *f) +static int ncm_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_ncm *ncm = func_to_ncm(f); + struct usb_string *us; int status; struct usb_ep *ep; + struct f_ncm_opts *ncm_opts; + + if (!can_support_ecm(cdev->gadget)) + return -EINVAL; + + ncm_opts = container_of(f->fi, struct f_ncm_opts, func_inst); + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to ncm_opts->bound access + */ + if (!ncm_opts->bound) { + mutex_lock(&ncm_opts->lock); + gether_set_gadget(ncm_opts->net, cdev->gadget); + status = gether_register_netdev(ncm_opts->net); + mutex_unlock(&ncm_opts->lock); + if (status) + return status; + ncm_opts->bound = true; + } + us = usb_gstrings_attach(cdev, ncm_strings, + ARRAY_SIZE(ncm_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + ncm_control_intf.iInterface = us[STRING_CTRL_IDX].id; + ncm_data_nop_intf.iInterface = us[STRING_DATA_IDX].id; + ncm_data_intf.iInterface = us[STRING_DATA_IDX].id; + ecm_desc.iMACAddress = us[STRING_MAC_IDX].id; + ncm_iad_desc.iFunction = us[STRING_IAD_IDX].id; /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); @@ -1259,74 +1293,131 @@ fail: return status; } -static void -ncm_unbind(struct usb_configuration *c, struct usb_function *f) +static inline struct f_ncm_opts *to_f_ncm_opts(struct config_item *item) { - struct f_ncm *ncm = func_to_ncm(f); + return container_of(to_config_group(item), struct f_ncm_opts, + func_inst.group); +} - DBG(c->cdev, "ncm unbind\n"); +/* f_ncm_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(ncm); - ncm_string_defs[0].id = 0; - usb_free_all_descriptors(f); +/* f_ncm_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(ncm); - kfree(ncm->notify_req->buf); - usb_ep_free_request(ncm->notify, ncm->notify_req); +/* f_ncm_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(ncm); +/* f_ncm_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(ncm); + +/* f_ncm_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(ncm); + +static struct configfs_attribute *ncm_attrs[] = { + &f_ncm_opts_dev_addr.attr, + &f_ncm_opts_host_addr.attr, + &f_ncm_opts_qmult.attr, + &f_ncm_opts_ifname.attr, + NULL, +}; + +static struct config_item_type ncm_func_type = { + .ct_item_ops = &ncm_item_ops, + .ct_attrs = ncm_attrs, + .ct_owner = THIS_MODULE, +}; + +static void ncm_free_inst(struct usb_function_instance *f) +{ + struct f_ncm_opts *opts; + + opts = container_of(f, struct f_ncm_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + kfree(opts); +} + +static struct usb_function_instance *ncm_alloc_inst(void) +{ + struct f_ncm_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = ncm_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); + } + + config_group_init_type_name(&opts->func_inst.group, "", &ncm_func_type); + + return &opts->func_inst; +} + +static void ncm_free(struct usb_function *f) +{ + struct f_ncm *ncm; + struct f_ncm_opts *opts; + + ncm = func_to_ncm(f); + opts = container_of(f->fi, struct f_ncm_opts, func_inst); kfree(ncm); + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); } -/** - * ncm_bind_config - add CDC Network link to a configuration - * @c: the configuration to support the network link - * @ethaddr: a buffer in which the ethernet address of the host side - * side of the link was recorded - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -int __init ncm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - struct eth_dev *dev) +static void ncm_unbind(struct usb_configuration *c, struct usb_function *f) { - struct f_ncm *ncm; - int status; + struct f_ncm *ncm = func_to_ncm(f); - if (!can_support_ecm(c->cdev->gadget) || !ethaddr) - return -EINVAL; + DBG(c->cdev, "ncm unbind\n"); - if (ncm_string_defs[0].id == 0) { - status = usb_string_ids_tab(c->cdev, ncm_string_defs); - if (status < 0) - return status; - ncm_control_intf.iInterface = - ncm_string_defs[STRING_CTRL_IDX].id; + usb_free_all_descriptors(f); - status = ncm_string_defs[STRING_DATA_IDX].id; - ncm_data_nop_intf.iInterface = status; - ncm_data_intf.iInterface = status; + kfree(ncm->notify_req->buf); + usb_ep_free_request(ncm->notify, ncm->notify_req); +} - ecm_desc.iMACAddress = ncm_string_defs[STRING_MAC_IDX].id; - ncm_iad_desc.iFunction = ncm_string_defs[STRING_IAD_IDX].id; - } +struct usb_function *ncm_alloc(struct usb_function_instance *fi) +{ + struct f_ncm *ncm; + struct f_ncm_opts *opts; + int status; /* allocate and initialize one new instance */ - ncm = kzalloc(sizeof *ncm, GFP_KERNEL); + ncm = kzalloc(sizeof(*ncm), GFP_KERNEL); if (!ncm) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_ncm_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; /* export host's Ethernet address in CDC format */ - snprintf(ncm->ethaddr, sizeof ncm->ethaddr, "%pm", ethaddr); + status = gether_get_host_addr_cdc(opts->net, ncm->ethaddr, + sizeof(ncm->ethaddr)); + if (status < 12) { /* strlen("01234567890a") */ + kfree(ncm); + mutex_unlock(&opts->lock); + return ERR_PTR(-EINVAL); + } ncm_string_defs[STRING_MAC_IDX].s = ncm->ethaddr; spin_lock_init(&ncm->lock); ncm_reset_values(ncm); - ncm->port.ioport = dev; + ncm->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); ncm->port.is_fixed = true; ncm->port.func.name = "cdc_network"; - ncm->port.func.strings = ncm_strings; /* descriptors are per-instance copies */ ncm->port.func.bind = ncm_bind; ncm->port.func.unbind = ncm_unbind; @@ -1334,12 +1425,14 @@ int __init ncm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], ncm->port.func.get_alt = ncm_get_alt; ncm->port.func.setup = ncm_setup; ncm->port.func.disable = ncm_disable; + ncm->port.func.free_func = ncm_free; ncm->port.wrap = ncm_wrap_ntb; ncm->port.unwrap = ncm_unwrap_ntb; - status = usb_add_function(c, &ncm->port.func); - if (status) - kfree(ncm); - return status; + return &ncm->port.func; } + +DECLARE_USB_FUNCTION_INIT(ncm, ncm_alloc_inst, ncm_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Yauheni Kaliuta"); diff --git a/drivers/usb/gadget/f_obex.c b/drivers/usb/gadget/f_obex.c index 8aa2be5329bc..ad39f1dacba3 100644 --- a/drivers/usb/gadget/f_obex.c +++ b/drivers/usb/gadget/f_obex.c @@ -309,23 +309,20 @@ static int obex_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_obex *obex = func_to_obex(f); + struct usb_string *us; int status; struct usb_ep *ep; if (!can_support_obex(c)) return -EINVAL; - if (obex_string_defs[OBEX_CTRL_IDX].id == 0) { - status = usb_string_ids_tab(c->cdev, obex_string_defs); - if (status < 0) - return status; - obex_control_intf.iInterface = - obex_string_defs[OBEX_CTRL_IDX].id; - - status = obex_string_defs[OBEX_DATA_IDX].id; - obex_data_nop_intf.iInterface = status; - obex_data_intf.iInterface = status; - } + us = usb_gstrings_attach(cdev, obex_strings, + ARRAY_SIZE(obex_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + obex_control_intf.iInterface = us[OBEX_CTRL_IDX].id; + obex_data_nop_intf.iInterface = us[OBEX_DATA_IDX].id; + obex_data_intf.iInterface = us[OBEX_DATA_IDX].id; /* allocate instance-specific interface IDs, and patch descriptors */ @@ -406,57 +403,6 @@ fail: return status; } -#ifdef USBF_OBEX_INCLUDED - -static void -obex_old_unbind(struct usb_configuration *c, struct usb_function *f) -{ - obex_string_defs[OBEX_CTRL_IDX].id = 0; - usb_free_all_descriptors(f); - kfree(func_to_obex(f)); -} - -/** - * obex_bind_config - add a CDC OBEX function to a configuration - * @c: the configuration to support the CDC OBEX instance - * @port_num: /dev/ttyGS* port this interface will use - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - */ -int __init obex_bind_config(struct usb_configuration *c, u8 port_num) -{ - struct f_obex *obex; - int status; - - /* allocate and initialize one new instance */ - obex = kzalloc(sizeof *obex, GFP_KERNEL); - if (!obex) - return -ENOMEM; - - obex->port_num = port_num; - - obex->port.connect = obex_connect; - obex->port.disconnect = obex_disconnect; - - obex->port.func.name = "obex"; - obex->port.func.strings = obex_strings; - /* descriptors are per-instance copies */ - obex->port.func.bind = obex_bind; - obex->port.func.unbind = obex_old_unbind; - obex->port.func.set_alt = obex_set_alt; - obex->port.func.get_alt = obex_get_alt; - obex->port.func.disable = obex_disable; - - status = usb_add_function(c, &obex->port.func); - if (status) - kfree(obex); - - return status; -} - -#else - static inline struct f_serial_opts *to_f_serial_opts(struct config_item *item) { return container_of(to_config_group(item), struct f_serial_opts, @@ -550,7 +496,6 @@ static void obex_free(struct usb_function *f) static void obex_unbind(struct usb_configuration *c, struct usb_function *f) { - obex_string_defs[OBEX_CTRL_IDX].id = 0; usb_free_all_descriptors(f); } @@ -572,7 +517,6 @@ struct usb_function *obex_alloc(struct usb_function_instance *fi) obex->port.disconnect = obex_disconnect; obex->port.func.name = "obex"; - obex->port.func.strings = obex_strings; /* descriptors are per-instance copies */ obex->port.func.bind = obex_bind; obex->port.func.unbind = obex_unbind; @@ -585,8 +529,5 @@ struct usb_function *obex_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(obex, obex_alloc_inst, obex_alloc); - -#endif - MODULE_AUTHOR("Felipe Balbi"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c index b21ab558b6c0..eb3aa817a662 100644 --- a/drivers/usb/gadget/f_phonet.c +++ b/drivers/usb/gadget/f_phonet.c @@ -13,6 +13,7 @@ #include <linux/mm.h> #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/netdevice.h> @@ -25,6 +26,7 @@ #include <linux/usb/composite.h> #include "u_phonet.h" +#include "u_ether.h" #define PN_MEDIA_USB 0x1B #define MAXPACKET 512 @@ -478,8 +480,7 @@ static void pn_disconnect(struct usb_function *f) /*-------------------------------------------------------------------------*/ -static __init -int pn_bind(struct usb_configuration *c, struct usb_function *f) +static int pn_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct usb_gadget *gadget = cdev->gadget; @@ -487,6 +488,25 @@ int pn_bind(struct usb_configuration *c, struct usb_function *f) struct usb_ep *ep; int status, i; + struct f_phonet_opts *phonet_opts; + + phonet_opts = container_of(f->fi, struct f_phonet_opts, func_inst); + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to phonet_opts->bound access + */ + if (!phonet_opts->bound) { + gphonet_set_gadget(phonet_opts->net, gadget); + status = gphonet_register_netdev(phonet_opts->net); + if (status) + return status; + phonet_opts->bound = true; + } + /* Reserve interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -560,8 +580,101 @@ err: return status; } -static void -pn_unbind(struct usb_configuration *c, struct usb_function *f) +static inline struct f_phonet_opts *to_f_phonet_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_phonet_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(f_phonet_opts); +static ssize_t f_phonet_attr_show(struct config_item *item, + struct configfs_attribute *attr, + char *page) +{ + struct f_phonet_opts *opts = to_f_phonet_opts(item); + struct f_phonet_opts_attribute *f_phonet_opts_attr = + container_of(attr, struct f_phonet_opts_attribute, attr); + ssize_t ret = 0; + + if (f_phonet_opts_attr->show) + ret = f_phonet_opts_attr->show(opts, page); + return ret; +} + +static void phonet_attr_release(struct config_item *item) +{ + struct f_phonet_opts *opts = to_f_phonet_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations phonet_item_ops = { + .release = phonet_attr_release, + .show_attribute = f_phonet_attr_show, +}; + +static ssize_t f_phonet_ifname_show(struct f_phonet_opts *opts, char *page) +{ + return gether_get_ifname(opts->net, page, PAGE_SIZE); +} + +static struct f_phonet_opts_attribute f_phonet_ifname = + __CONFIGFS_ATTR_RO(ifname, f_phonet_ifname_show); + +static struct configfs_attribute *phonet_attrs[] = { + &f_phonet_ifname.attr, + NULL, +}; + +static struct config_item_type phonet_func_type = { + .ct_item_ops = &phonet_item_ops, + .ct_attrs = phonet_attrs, + .ct_owner = THIS_MODULE, +}; + +static void phonet_free_inst(struct usb_function_instance *f) +{ + struct f_phonet_opts *opts; + + opts = container_of(f, struct f_phonet_opts, func_inst); + if (opts->bound) + gphonet_cleanup(opts->net); + else + free_netdev(opts->net); + kfree(opts); +} + +static struct usb_function_instance *phonet_alloc_inst(void) +{ + struct f_phonet_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + + opts->func_inst.free_func_inst = phonet_free_inst; + opts->net = gphonet_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); + } + + config_group_init_type_name(&opts->func_inst.group, "", + &phonet_func_type); + + return &opts->func_inst; +} + +static void phonet_free(struct usb_function *f) +{ + struct f_phonet *phonet; + + phonet = func_to_pn(f); + kfree(phonet); +} + +static void pn_unbind(struct usb_configuration *c, struct usb_function *f) { struct f_phonet *fp = func_to_pn(f); int i; @@ -574,61 +687,72 @@ pn_unbind(struct usb_configuration *c, struct usb_function *f) usb_ep_free_request(fp->out_ep, fp->out_reqv[i]); usb_free_all_descriptors(f); - kfree(fp); } -/*-------------------------------------------------------------------------*/ - -static struct net_device *dev; - -int __init phonet_bind_config(struct usb_configuration *c) +struct usb_function *phonet_alloc(struct usb_function_instance *fi) { struct f_phonet *fp; - int err, size; + struct f_phonet_opts *opts; + int size; size = sizeof(*fp) + (phonet_rxq_size * sizeof(struct usb_request *)); fp = kzalloc(size, GFP_KERNEL); if (!fp) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_phonet_opts, func_inst); - fp->dev = dev; + fp->dev = opts->net; fp->function.name = "phonet"; fp->function.bind = pn_bind; fp->function.unbind = pn_unbind; fp->function.set_alt = pn_set_alt; fp->function.get_alt = pn_get_alt; fp->function.disable = pn_disconnect; + fp->function.free_func = phonet_free; spin_lock_init(&fp->rx.lock); - err = usb_add_function(c, &fp->function); - if (err) - kfree(fp); - return err; + return &fp->function; } -int __init gphonet_setup(struct usb_gadget *gadget) +struct net_device *gphonet_setup_default(void) { + struct net_device *dev; struct phonet_port *port; - int err; /* Create net device */ - BUG_ON(dev); dev = alloc_netdev(sizeof(*port), "upnlink%d", pn_net_setup); if (!dev) - return -ENOMEM; + return ERR_PTR(-ENOMEM); port = netdev_priv(dev); spin_lock_init(&port->lock); netif_carrier_off(dev); - SET_NETDEV_DEV(dev, &gadget->dev); - err = register_netdev(dev); - if (err) - free_netdev(dev); - return err; + return dev; +} + +void gphonet_set_gadget(struct net_device *net, struct usb_gadget *g) +{ + SET_NETDEV_DEV(net, &g->dev); +} + +int gphonet_register_netdev(struct net_device *net) +{ + int status; + + status = register_netdev(net); + if (status) + free_netdev(net); + + return status; } -void gphonet_cleanup(void) +void gphonet_cleanup(struct net_device *dev) { unregister_netdev(dev); } + +DECLARE_USB_FUNCTION_INIT(phonet, phonet_alloc_inst, phonet_alloc); +MODULE_AUTHOR("Rémi Denis-Courmont"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 36e8c44d8e5e..717ed7f95639 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -17,15 +17,17 @@ #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include <linux/atomic.h> #include "u_ether.h" +#include "u_ether_configfs.h" +#include "u_rndis.h" #include "rndis.h" - /* * This function is an RNDIS Ethernet port -- a Microsoft protocol that's * been promoted instead of the standard CDC Ethernet. The published RNDIS @@ -655,6 +657,13 @@ static void rndis_close(struct gether *geth) /*-------------------------------------------------------------------------*/ +/* Some controllers can't support RNDIS ... */ +static inline bool can_support_rndis(struct usb_configuration *c) +{ + /* everything else is *presumably* fine */ + return true; +} + /* ethernet function driver setup/binding */ static int @@ -662,9 +671,41 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_rndis *rndis = func_to_rndis(f); + struct usb_string *us; int status; struct usb_ep *ep; +#ifndef USB_FRNDIS_INCLUDED + struct f_rndis_opts *rndis_opts; + + if (!can_support_rndis(c)) + return -EINVAL; + + rndis_opts = container_of(f->fi, struct f_rndis_opts, func_inst); + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to rndis_opts->bound access + */ + if (!rndis_opts->bound) { + gether_set_gadget(rndis_opts->net, cdev->gadget); + status = gether_register_netdev(rndis_opts->net); + if (status) + return status; + rndis_opts->bound = true; + } +#endif + us = usb_gstrings_attach(cdev, rndis_strings, + ARRAY_SIZE(rndis_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + rndis_control_intf.iInterface = us[0].id; + rndis_data_intf.iInterface = us[1].id; + rndis_iad_descriptor.iFunction = us[2].id; + /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -741,10 +782,12 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) rndis->port.open = rndis_open; rndis->port.close = rndis_close; +#ifdef USB_FRNDIS_INCLUDED status = rndis_register(rndis_response_available, rndis); if (status < 0) goto fail; rndis->config = status; +#endif rndis_set_param_medium(rndis->config, RNDIS_MEDIUM_802_3, 0); rndis_set_host_mac(rndis->config, rndis->ethaddr); @@ -787,15 +830,15 @@ fail: return status; } +#ifdef USB_FRNDIS_INCLUDED + static void -rndis_unbind(struct usb_configuration *c, struct usb_function *f) +rndis_old_unbind(struct usb_configuration *c, struct usb_function *f) { struct f_rndis *rndis = func_to_rndis(f); rndis_deregister(rndis->config); - rndis_exit(); - rndis_string_defs[0].id = 0; usb_free_all_descriptors(f); kfree(rndis->notify_req->buf); @@ -804,13 +847,6 @@ rndis_unbind(struct usb_configuration *c, struct usb_function *f) kfree(rndis); } -/* Some controllers can't support RNDIS ... */ -static inline bool can_support_rndis(struct usb_configuration *c) -{ - /* everything else is *presumably* fine */ - return true; -} - int rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], u32 vendorID, const char *manufacturer, struct eth_dev *dev) @@ -818,24 +854,6 @@ rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], struct f_rndis *rndis; int status; - if (!can_support_rndis(c) || !ethaddr) - return -EINVAL; - - if (rndis_string_defs[0].id == 0) { - /* ... and setup RNDIS itself */ - status = rndis_init(); - if (status < 0) - return status; - - status = usb_string_ids_tab(c->cdev, rndis_string_defs); - if (status) - return status; - - rndis_control_intf.iInterface = rndis_string_defs[0].id; - rndis_data_intf.iInterface = rndis_string_defs[1].id; - rndis_iad_descriptor.iFunction = rndis_string_defs[2].id; - } - /* allocate and initialize one new instance */ status = -ENOMEM; rndis = kzalloc(sizeof *rndis, GFP_KERNEL); @@ -856,19 +874,181 @@ rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], rndis->port.unwrap = rndis_rm_hdr; rndis->port.func.name = "rndis"; - rndis->port.func.strings = rndis_strings; /* descriptors are per-instance copies */ rndis->port.func.bind = rndis_bind; - rndis->port.func.unbind = rndis_unbind; + rndis->port.func.unbind = rndis_old_unbind; rndis->port.func.set_alt = rndis_set_alt; rndis->port.func.setup = rndis_setup; rndis->port.func.disable = rndis_disable; status = usb_add_function(c, &rndis->port.func); - if (status) { + if (status) kfree(rndis); fail: - rndis_exit(); - } return status; } + +#else + +void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net) +{ + struct f_rndis_opts *opts; + + opts = container_of(f, struct f_rndis_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + opts->borrowed_net = opts->bound = true; + opts->net = net; +} +EXPORT_SYMBOL(rndis_borrow_net); + +static inline struct f_rndis_opts *to_f_rndis_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_rndis_opts, + func_inst.group); +} + +/* f_rndis_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(rndis); + +/* f_rndis_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(rndis); + +/* f_rndis_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(rndis); + +/* f_rndis_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(rndis); + +/* f_rndis_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(rndis); + +static struct configfs_attribute *rndis_attrs[] = { + &f_rndis_opts_dev_addr.attr, + &f_rndis_opts_host_addr.attr, + &f_rndis_opts_qmult.attr, + &f_rndis_opts_ifname.attr, + NULL, +}; + +static struct config_item_type rndis_func_type = { + .ct_item_ops = &rndis_item_ops, + .ct_attrs = rndis_attrs, + .ct_owner = THIS_MODULE, +}; + +static void rndis_free_inst(struct usb_function_instance *f) +{ + struct f_rndis_opts *opts; + + opts = container_of(f, struct f_rndis_opts, func_inst); + if (!opts->borrowed_net) { + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + } + kfree(opts); +} + +static struct usb_function_instance *rndis_alloc_inst(void) +{ + struct f_rndis_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = rndis_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); + } + + config_group_init_type_name(&opts->func_inst.group, "", + &rndis_func_type); + + return &opts->func_inst; +} + +static void rndis_free(struct usb_function *f) +{ + struct f_rndis *rndis; + struct f_rndis_opts *opts; + + rndis = func_to_rndis(f); + rndis_deregister(rndis->config); + opts = container_of(f->fi, struct f_rndis_opts, func_inst); + kfree(rndis); + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); +} + +static void rndis_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_rndis *rndis = func_to_rndis(f); + + usb_free_all_descriptors(f); + + kfree(rndis->notify_req->buf); + usb_ep_free_request(rndis->notify, rndis->notify_req); +} + +static struct usb_function *rndis_alloc(struct usb_function_instance *fi) +{ + struct f_rndis *rndis; + struct f_rndis_opts *opts; + int status; + + /* allocate and initialize one new instance */ + rndis = kzalloc(sizeof(*rndis), GFP_KERNEL); + if (!rndis) + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_rndis_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; + + gether_get_host_addr_u8(opts->net, rndis->ethaddr); + rndis->vendorID = opts->vendor_id; + rndis->manufacturer = opts->manufacturer; + + rndis->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); + /* RNDIS activates when the host changes this filter */ + rndis->port.cdc_filter = 0; + + /* RNDIS has special (and complex) framing */ + rndis->port.header_len = sizeof(struct rndis_packet_msg_type); + rndis->port.wrap = rndis_add_header; + rndis->port.unwrap = rndis_rm_hdr; + + rndis->port.func.name = "rndis"; + /* descriptors are per-instance copies */ + rndis->port.func.bind = rndis_bind; + rndis->port.func.unbind = rndis_unbind; + rndis->port.func.set_alt = rndis_set_alt; + rndis->port.func.setup = rndis_setup; + rndis->port.func.disable = rndis_disable; + rndis->port.func.free_func = rndis_free; + + status = rndis_register(rndis_response_available, rndis); + if (status < 0) { + kfree(rndis); + return ERR_PTR(status); + } + rndis->config = status; + + return &rndis->port.func; +} + +DECLARE_USB_FUNCTION_INIT(rndis, rndis_alloc_inst, rndis_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); + +#endif diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c index 7be04b342494..7c8674fa7e80 100644 --- a/drivers/usb/gadget/f_subset.c +++ b/drivers/usb/gadget/f_subset.c @@ -12,11 +12,13 @@ #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include "u_ether.h" - +#include "u_ether_configfs.h" +#include "u_gether.h" /* * This function packages a simple "CDC Subset" Ethernet port with no real @@ -295,9 +297,40 @@ geth_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_gether *geth = func_to_geth(f); + struct usb_string *us; int status; struct usb_ep *ep; +#ifndef USB_FSUBSET_INCLUDED + struct f_gether_opts *gether_opts; + + gether_opts = container_of(f->fi, struct f_gether_opts, func_inst); + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to gether_opts->bound access + */ + if (!gether_opts->bound) { + mutex_lock(&gether_opts->lock); + gether_set_gadget(gether_opts->net, cdev->gadget); + status = gether_register_netdev(gether_opts->net); + mutex_unlock(&gether_opts->lock); + if (status) + return status; + gether_opts->bound = true; + } +#endif + us = usb_gstrings_attach(cdev, geth_strings, + ARRAY_SIZE(geth_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + + subset_data_intf.iInterface = us[0].id; + ether_desc.iMACAddress = us[1].id; + /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -360,8 +393,10 @@ fail: return status; } +#ifdef USB_FSUBSET_INCLUDED + static void -geth_unbind(struct usb_configuration *c, struct usb_function *f) +geth_old_unbind(struct usb_configuration *c, struct usb_function *f) { geth_string_defs[0].id = 0; usb_free_all_descriptors(f); @@ -387,18 +422,6 @@ int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], struct f_gether *geth; int status; - if (!ethaddr) - return -EINVAL; - - /* maybe allocate device-global string IDs */ - if (geth_string_defs[0].id == 0) { - status = usb_string_ids_tab(c->cdev, geth_string_defs); - if (status < 0) - return status; - subset_data_intf.iInterface = geth_string_defs[0].id; - ether_desc.iMACAddress = geth_string_defs[1].id; - } - /* allocate and initialize one new instance */ geth = kzalloc(sizeof *geth, GFP_KERNEL); if (!geth) @@ -412,9 +435,8 @@ int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], geth->port.cdc_filter = DEFAULT_FILTER; geth->port.func.name = "cdc_subset"; - geth->port.func.strings = geth_strings; geth->port.func.bind = geth_bind; - geth->port.func.unbind = geth_unbind; + geth->port.func.unbind = geth_old_unbind; geth->port.func.set_alt = geth_set_alt; geth->port.func.disable = geth_disable; @@ -423,3 +445,133 @@ int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], kfree(geth); return status; } + +#else + +static inline struct f_gether_opts *to_f_gether_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_gether_opts, + func_inst.group); +} + +/* f_gether_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(gether); + +/* f_gether_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(gether); + +/* f_gether_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(gether); + +/* f_gether_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(gether); + +/* f_gether_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(gether); + +static struct configfs_attribute *gether_attrs[] = { + &f_gether_opts_dev_addr.attr, + &f_gether_opts_host_addr.attr, + &f_gether_opts_qmult.attr, + &f_gether_opts_ifname.attr, + NULL, +}; + +static struct config_item_type gether_func_type = { + .ct_item_ops = &gether_item_ops, + .ct_attrs = gether_attrs, + .ct_owner = THIS_MODULE, +}; + +static void geth_free_inst(struct usb_function_instance *f) +{ + struct f_gether_opts *opts; + + opts = container_of(f, struct f_gether_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + kfree(opts); +} + +static struct usb_function_instance *geth_alloc_inst(void) +{ + struct f_gether_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = geth_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); + } + + config_group_init_type_name(&opts->func_inst.group, "", + &gether_func_type); + + return &opts->func_inst; +} + +static void geth_free(struct usb_function *f) +{ + struct f_gether *eth; + + eth = func_to_geth(f); + kfree(eth); +} + +static void geth_unbind(struct usb_configuration *c, struct usb_function *f) +{ + geth_string_defs[0].id = 0; + usb_free_all_descriptors(f); +} + +static struct usb_function *geth_alloc(struct usb_function_instance *fi) +{ + struct f_gether *geth; + struct f_gether_opts *opts; + int status; + + /* allocate and initialize one new instance */ + geth = kzalloc(sizeof(*geth), GFP_KERNEL); + if (!geth) + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_gether_opts, func_inst); + + mutex_lock(&opts->lock); + opts->refcnt++; + /* export host's Ethernet address in CDC format */ + status = gether_get_host_addr_cdc(opts->net, geth->ethaddr, + sizeof(geth->ethaddr)); + if (status < 12) { + kfree(geth); + mutex_unlock(&opts->lock); + return ERR_PTR(-EINVAL); + } + geth_string_defs[1].s = geth->ethaddr; + + geth->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); + geth->port.cdc_filter = DEFAULT_FILTER; + + geth->port.func.name = "cdc_subset"; + geth->port.func.bind = geth_bind; + geth->port.func.unbind = geth_unbind; + geth->port.func.set_alt = geth_set_alt; + geth->port.func.disable = geth_disable; + geth->port.func.free_func = geth_free; + + return &geth->port.func; +} + +DECLARE_USB_FUNCTION_INIT(geth, geth_alloc_inst, geth_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); + +#endif diff --git a/drivers/usb/gadget/f_uac1.c b/drivers/usb/gadget/f_uac1.c index fa8ea4ea00c1..2b4c82d84bfc 100644 --- a/drivers/usb/gadget/f_uac1.c +++ b/drivers/usb/gadget/f_uac1.c @@ -695,7 +695,7 @@ static int generic_get_cmd(struct usb_audio_control *con, u8 cmd) } /* Todo: add more control selecotor dynamically */ -int __init control_selector_init(struct f_audio *audio) +static int __init control_selector_init(struct f_audio *audio) { INIT_LIST_HEAD(&audio->cs); list_add(&feature_unit.list, &audio->cs); @@ -719,7 +719,7 @@ int __init control_selector_init(struct f_audio *audio) * * Returns zero on success, else negative errno. */ -int __init audio_bind_config(struct usb_configuration *c) +static int __init audio_bind_config(struct usb_configuration *c) { struct f_audio *audio; int status; diff --git a/drivers/usb/gadget/f_uac2.c b/drivers/usb/gadget/f_uac2.c index 03c1fb686644..2f23566e53d8 100644 --- a/drivers/usb/gadget/f_uac2.c +++ b/drivers/usb/gadget/f_uac2.c @@ -90,6 +90,7 @@ struct uac2_req { }; struct uac2_rtd_params { + struct snd_uac2_chip *uac2; /* parent chip */ bool ep_enabled; /* if the ep is enabled */ /* Size of the ring buffer */ size_t dma_bytes; @@ -169,18 +170,6 @@ struct snd_uac2_chip *pdev_to_uac2(struct platform_device *p) } static inline -struct snd_uac2_chip *prm_to_uac2(struct uac2_rtd_params *r) -{ - struct snd_uac2_chip *uac2 = container_of(r, - struct snd_uac2_chip, c_prm); - - if (&uac2->c_prm != r) - uac2 = container_of(r, struct snd_uac2_chip, p_prm); - - return uac2; -} - -static inline uint num_channels(uint chanmask) { uint num = 0; @@ -204,7 +193,7 @@ agdev_iso_complete(struct usb_ep *ep, struct usb_request *req) struct uac2_req *ur = req->context; struct snd_pcm_substream *substream; struct uac2_rtd_params *prm = ur->pp; - struct snd_uac2_chip *uac2 = prm_to_uac2(prm); + struct snd_uac2_chip *uac2 = prm->uac2; /* i/f shutting down */ if (!prm->ep_enabled) @@ -894,7 +883,7 @@ struct cntrl_range_lay3 { static inline void free_ep(struct uac2_rtd_params *prm, struct usb_ep *ep) { - struct snd_uac2_chip *uac2 = prm_to_uac2(prm); + struct snd_uac2_chip *uac2 = prm->uac2; int i; prm->ep_enabled = false; @@ -970,6 +959,9 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) } agdev->in_ep->driver_data = agdev; + uac2->p_prm.uac2 = uac2; + uac2->c_prm.uac2 = uac2; + hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress; hs_epout_desc.wMaxPacketSize = fs_epout_desc.wMaxPacketSize; hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress; diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c index 38dcedddc52c..e2a1f50bd93c 100644 --- a/drivers/usb/gadget/f_uvc.c +++ b/drivers/usb/gadget/f_uvc.c @@ -156,8 +156,6 @@ static struct usb_endpoint_descriptor uvc_fs_streaming_ep __initdata = { /* The wMaxPacketSize and bInterval values will be initialized from * module parameters. */ - .wMaxPacketSize = 0, - .bInterval = 0, }; static struct usb_endpoint_descriptor uvc_hs_streaming_ep __initdata = { @@ -169,8 +167,6 @@ static struct usb_endpoint_descriptor uvc_hs_streaming_ep __initdata = { /* The wMaxPacketSize and bInterval values will be initialized from * module parameters. */ - .wMaxPacketSize = 0, - .bInterval = 0, }; static struct usb_endpoint_descriptor uvc_ss_streaming_ep __initdata = { @@ -183,17 +179,14 @@ static struct usb_endpoint_descriptor uvc_ss_streaming_ep __initdata = { /* The wMaxPacketSize and bInterval values will be initialized from * module parameters. */ - .wMaxPacketSize = 0, - .bInterval = 0, }; static struct usb_ss_ep_comp_descriptor uvc_ss_streaming_comp __initdata = { .bLength = sizeof(uvc_ss_streaming_comp), .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, - /* The following 3 values can be tweaked if necessary. */ - .bMaxBurst = 0, - .bmAttributes = 0, - .wBytesPerInterval = cpu_to_le16(1024), + /* The bMaxBurst, bmAttributes and wBytesPerInterval values will be + * initialized from module parameters. + */ }; static const struct usb_descriptor_header * const uvc_fs_streaming[] = { @@ -413,7 +406,7 @@ uvc_register_video(struct uvc_device *uvc) if (video == NULL) return -ENOMEM; - video->parent = &cdev->gadget->dev; + video->v4l2_dev = &uvc->v4l2_dev; video->fops = &uvc_v4l2_fops; video->release = video_device_release; strlcpy(video->name, cdev->gadget->name, sizeof(video->name)); @@ -570,6 +563,7 @@ uvc_function_unbind(struct usb_configuration *c, struct usb_function *f) INFO(cdev, "uvc_function_unbind\n"); video_unregister_device(uvc->vdev); + v4l2_device_unregister(&uvc->v4l2_dev); uvc->control_ep->driver_data = NULL; uvc->video.ep->driver_data = NULL; @@ -697,6 +691,11 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) if ((ret = usb_function_deactivate(f)) < 0) goto error; + if (v4l2_device_register(&cdev->gadget->dev, &uvc->v4l2_dev)) { + printk(KERN_INFO "v4l2_device_register failed\n"); + goto error; + } + /* Initialise video. */ ret = uvc_video_init(&uvc->video); if (ret < 0) @@ -712,6 +711,7 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) return 0; error: + v4l2_device_unregister(&uvc->v4l2_dev); if (uvc->vdev) video_device_release(uvc->vdev); diff --git a/drivers/usb/gadget/fotg210-udc.c b/drivers/usb/gadget/fotg210-udc.c new file mode 100644 index 000000000000..32db2eee2d87 --- /dev/null +++ b/drivers/usb/gadget/fotg210-udc.c @@ -0,0 +1,1219 @@ +/* + * FOTG210 UDC Driver supports Bulk transfer so far + * + * Copyright (C) 2013 Faraday Technology Corporation + * + * Author : Yuan-Hsin Chen <yhchen@faraday-tech.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + */ + +#include <linux/dma-mapping.h> +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> + +#include "fotg210.h" + +#define DRIVER_DESC "FOTG210 USB Device Controller Driver" +#define DRIVER_VERSION "30-April-2013" + +static const char udc_name[] = "fotg210_udc"; +static const char * const fotg210_ep_name[] = { + "ep0", "ep1", "ep2", "ep3", "ep4"}; + +static void fotg210_disable_fifo_int(struct fotg210_ep *ep) +{ + u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1); + + if (ep->dir_in) + value |= DMISGR1_MF_IN_INT(ep->epnum - 1); + else + value |= DMISGR1_MF_OUTSPK_INT(ep->epnum - 1); + iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1); +} + +static void fotg210_enable_fifo_int(struct fotg210_ep *ep) +{ + u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1); + + if (ep->dir_in) + value &= ~DMISGR1_MF_IN_INT(ep->epnum - 1); + else + value &= ~DMISGR1_MF_OUTSPK_INT(ep->epnum - 1); + iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1); +} + +static void fotg210_set_cxdone(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DCFESR); + + value |= DCFESR_CX_DONE; + iowrite32(value, fotg210->reg + FOTG210_DCFESR); +} + +static void fotg210_done(struct fotg210_ep *ep, struct fotg210_request *req, + int status) +{ + list_del_init(&req->queue); + + /* don't modify queue heads during completion callback */ + if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN) + req->req.status = -ESHUTDOWN; + else + req->req.status = status; + + spin_unlock(&ep->fotg210->lock); + req->req.complete(&ep->ep, &req->req); + spin_lock(&ep->fotg210->lock); + + if (ep->epnum) { + if (list_empty(&ep->queue)) + fotg210_disable_fifo_int(ep); + } else { + fotg210_set_cxdone(ep->fotg210); + } +} + +static void fotg210_fifo_ep_mapping(struct fotg210_ep *ep, u32 epnum, + u32 dir_in) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 val; + + /* Driver should map an ep to a fifo and then map the fifo + * to the ep. What a brain-damaged design! + */ + + /* map a fifo to an ep */ + val = ioread32(fotg210->reg + FOTG210_EPMAP); + val &= ~EPMAP_FIFONOMSK(epnum, dir_in); + val |= EPMAP_FIFONO(epnum, dir_in); + iowrite32(val, fotg210->reg + FOTG210_EPMAP); + + /* map the ep to the fifo */ + val = ioread32(fotg210->reg + FOTG210_FIFOMAP); + val &= ~FIFOMAP_EPNOMSK(epnum); + val |= FIFOMAP_EPNO(epnum); + iowrite32(val, fotg210->reg + FOTG210_FIFOMAP); + + /* enable fifo */ + val = ioread32(fotg210->reg + FOTG210_FIFOCF); + val |= FIFOCF_FIFO_EN(epnum - 1); + iowrite32(val, fotg210->reg + FOTG210_FIFOCF); +} + +static void fotg210_set_fifo_dir(struct fotg210_ep *ep, u32 epnum, u32 dir_in) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 val; + + val = ioread32(fotg210->reg + FOTG210_FIFOMAP); + val |= (dir_in ? FIFOMAP_DIRIN(epnum - 1) : FIFOMAP_DIROUT(epnum - 1)); + iowrite32(val, fotg210->reg + FOTG210_FIFOMAP); +} + +static void fotg210_set_tfrtype(struct fotg210_ep *ep, u32 epnum, u32 type) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 val; + + val = ioread32(fotg210->reg + FOTG210_FIFOCF); + val |= FIFOCF_TYPE(type, epnum - 1); + iowrite32(val, fotg210->reg + FOTG210_FIFOCF); +} + +static void fotg210_set_mps(struct fotg210_ep *ep, u32 epnum, u32 mps, + u32 dir_in) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 val; + u32 offset = dir_in ? FOTG210_INEPMPSR(epnum) : + FOTG210_OUTEPMPSR(epnum); + + val = ioread32(fotg210->reg + offset); + val |= INOUTEPMPSR_MPS(mps); + iowrite32(val, fotg210->reg + offset); +} + +static int fotg210_config_ep(struct fotg210_ep *ep, + const struct usb_endpoint_descriptor *desc) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + + fotg210_set_fifo_dir(ep, ep->epnum, ep->dir_in); + fotg210_set_tfrtype(ep, ep->epnum, ep->type); + fotg210_set_mps(ep, ep->epnum, ep->ep.maxpacket, ep->dir_in); + fotg210_fifo_ep_mapping(ep, ep->epnum, ep->dir_in); + + fotg210->ep[ep->epnum] = ep; + + return 0; +} + +static int fotg210_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) +{ + struct fotg210_ep *ep; + + ep = container_of(_ep, struct fotg210_ep, ep); + + ep->desc = desc; + ep->epnum = usb_endpoint_num(desc); + ep->type = usb_endpoint_type(desc); + ep->dir_in = usb_endpoint_dir_in(desc); + ep->ep.maxpacket = usb_endpoint_maxp(desc); + + return fotg210_config_ep(ep, desc); +} + +static void fotg210_reset_tseq(struct fotg210_udc *fotg210, u8 epnum) +{ + struct fotg210_ep *ep = fotg210->ep[epnum]; + u32 value; + void __iomem *reg; + + reg = (ep->dir_in) ? + fotg210->reg + FOTG210_INEPMPSR(epnum) : + fotg210->reg + FOTG210_OUTEPMPSR(epnum); + + /* Note: Driver needs to set and clear INOUTEPMPSR_RESET_TSEQ + * bit. Controller wouldn't clear this bit. WTF!!! + */ + + value = ioread32(reg); + value |= INOUTEPMPSR_RESET_TSEQ; + iowrite32(value, reg); + + value = ioread32(reg); + value &= ~INOUTEPMPSR_RESET_TSEQ; + iowrite32(value, reg); +} + +static int fotg210_ep_release(struct fotg210_ep *ep) +{ + if (!ep->epnum) + return 0; + ep->epnum = 0; + ep->stall = 0; + ep->wedged = 0; + + fotg210_reset_tseq(ep->fotg210, ep->epnum); + + return 0; +} + +static int fotg210_ep_disable(struct usb_ep *_ep) +{ + struct fotg210_ep *ep; + struct fotg210_request *req; + unsigned long flags; + + BUG_ON(!_ep); + + ep = container_of(_ep, struct fotg210_ep, ep); + + while (!list_empty(&ep->queue)) { + req = list_entry(ep->queue.next, + struct fotg210_request, queue); + spin_lock_irqsave(&ep->fotg210->lock, flags); + fotg210_done(ep, req, -ECONNRESET); + spin_unlock_irqrestore(&ep->fotg210->lock, flags); + } + + return fotg210_ep_release(ep); +} + +static struct usb_request *fotg210_ep_alloc_request(struct usb_ep *_ep, + gfp_t gfp_flags) +{ + struct fotg210_request *req; + + req = kzalloc(sizeof(struct fotg210_request), gfp_flags); + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + + return &req->req; +} + +static void fotg210_ep_free_request(struct usb_ep *_ep, + struct usb_request *_req) +{ + struct fotg210_request *req; + + req = container_of(_req, struct fotg210_request, req); + kfree(req); +} + +static void fotg210_enable_dma(struct fotg210_ep *ep, + dma_addr_t d, u32 len) +{ + u32 value; + struct fotg210_udc *fotg210 = ep->fotg210; + + /* set transfer length and direction */ + value = ioread32(fotg210->reg + FOTG210_DMACPSR1); + value &= ~(DMACPSR1_DMA_LEN(0xFFFF) | DMACPSR1_DMA_TYPE(1)); + value |= DMACPSR1_DMA_LEN(len) | DMACPSR1_DMA_TYPE(ep->dir_in); + iowrite32(value, fotg210->reg + FOTG210_DMACPSR1); + + /* set device DMA target FIFO number */ + value = ioread32(fotg210->reg + FOTG210_DMATFNR); + if (ep->epnum) + value |= DMATFNR_ACC_FN(ep->epnum - 1); + else + value |= DMATFNR_ACC_CXF; + iowrite32(value, fotg210->reg + FOTG210_DMATFNR); + + /* set DMA memory address */ + iowrite32(d, fotg210->reg + FOTG210_DMACPSR2); + + /* enable MDMA_EROR and MDMA_CMPLT interrupt */ + value = ioread32(fotg210->reg + FOTG210_DMISGR2); + value &= ~(DMISGR2_MDMA_CMPLT | DMISGR2_MDMA_ERROR); + iowrite32(value, fotg210->reg + FOTG210_DMISGR2); + + /* start DMA */ + value = ioread32(fotg210->reg + FOTG210_DMACPSR1); + value |= DMACPSR1_DMA_START; + iowrite32(value, fotg210->reg + FOTG210_DMACPSR1); +} + +static void fotg210_disable_dma(struct fotg210_ep *ep) +{ + iowrite32(DMATFNR_DISDMA, ep->fotg210->reg + FOTG210_DMATFNR); +} + +static void fotg210_wait_dma_done(struct fotg210_ep *ep) +{ + u32 value; + + do { + value = ioread32(ep->fotg210->reg + FOTG210_DISGR2); + if ((value & DISGR2_USBRST_INT) || + (value & DISGR2_DMA_ERROR)) + goto dma_reset; + } while (!(value & DISGR2_DMA_CMPLT)); + + value &= ~DISGR2_DMA_CMPLT; + iowrite32(value, ep->fotg210->reg + FOTG210_DISGR2); + return; + +dma_reset: + value = ioread32(ep->fotg210->reg + FOTG210_DMACPSR1); + value |= DMACPSR1_DMA_ABORT; + iowrite32(value, ep->fotg210->reg + FOTG210_DMACPSR1); + + /* reset fifo */ + if (ep->epnum) { + value = ioread32(ep->fotg210->reg + + FOTG210_FIBCR(ep->epnum - 1)); + value |= FIBCR_FFRST; + iowrite32(value, ep->fotg210->reg + + FOTG210_FIBCR(ep->epnum - 1)); + } else { + value = ioread32(ep->fotg210->reg + FOTG210_DCFESR); + value |= DCFESR_CX_CLR; + iowrite32(value, ep->fotg210->reg + FOTG210_DCFESR); + } +} + +static void fotg210_start_dma(struct fotg210_ep *ep, + struct fotg210_request *req) +{ + dma_addr_t d; + u8 *buffer; + u32 length; + + if (ep->epnum) { + if (ep->dir_in) { + buffer = req->req.buf; + length = req->req.length; + } else { + buffer = req->req.buf + req->req.actual; + length = ioread32(ep->fotg210->reg + + FOTG210_FIBCR(ep->epnum - 1)); + length &= FIBCR_BCFX; + } + } else { + buffer = req->req.buf + req->req.actual; + if (req->req.length - req->req.actual > ep->ep.maxpacket) + length = ep->ep.maxpacket; + else + length = req->req.length; + } + + d = dma_map_single(NULL, buffer, length, + ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + + if (dma_mapping_error(NULL, d)) { + pr_err("dma_mapping_error\n"); + return; + } + + dma_sync_single_for_device(NULL, d, length, + ep->dir_in ? DMA_TO_DEVICE : + DMA_FROM_DEVICE); + + fotg210_enable_dma(ep, d, length); + + /* check if dma is done */ + fotg210_wait_dma_done(ep); + + fotg210_disable_dma(ep); + + /* update actual transfer length */ + req->req.actual += length; + + dma_unmap_single(NULL, d, length, DMA_TO_DEVICE); +} + +static void fotg210_ep0_queue(struct fotg210_ep *ep, + struct fotg210_request *req) +{ + if (!req->req.length) { + fotg210_done(ep, req, 0); + return; + } + if (ep->dir_in) { /* if IN */ + if (req->req.length) { + fotg210_start_dma(ep, req); + } else { + pr_err("%s : req->req.length = 0x%x\n", + __func__, req->req.length); + } + if ((req->req.length == req->req.actual) || + (req->req.actual < ep->ep.maxpacket)) + fotg210_done(ep, req, 0); + } else { /* OUT */ + if (!req->req.length) { + fotg210_done(ep, req, 0); + } else { + u32 value = ioread32(ep->fotg210->reg + + FOTG210_DMISGR0); + + value &= ~DMISGR0_MCX_OUT_INT; + iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR0); + } + } +} + +static int fotg210_ep_queue(struct usb_ep *_ep, struct usb_request *_req, + gfp_t gfp_flags) +{ + struct fotg210_ep *ep; + struct fotg210_request *req; + unsigned long flags; + int request = 0; + + ep = container_of(_ep, struct fotg210_ep, ep); + req = container_of(_req, struct fotg210_request, req); + + if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN) + return -ESHUTDOWN; + + spin_lock_irqsave(&ep->fotg210->lock, flags); + + if (list_empty(&ep->queue)) + request = 1; + + list_add_tail(&req->queue, &ep->queue); + + req->req.actual = 0; + req->req.status = -EINPROGRESS; + + if (!ep->epnum) /* ep0 */ + fotg210_ep0_queue(ep, req); + else if (request && !ep->stall) + fotg210_enable_fifo_int(ep); + + spin_unlock_irqrestore(&ep->fotg210->lock, flags); + + return 0; +} + +static int fotg210_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct fotg210_ep *ep; + struct fotg210_request *req; + unsigned long flags; + + ep = container_of(_ep, struct fotg210_ep, ep); + req = container_of(_req, struct fotg210_request, req); + + spin_lock_irqsave(&ep->fotg210->lock, flags); + if (!list_empty(&ep->queue)) + fotg210_done(ep, req, -ECONNRESET); + spin_unlock_irqrestore(&ep->fotg210->lock, flags); + + return 0; +} + +static void fotg210_set_epnstall(struct fotg210_ep *ep) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 value; + void __iomem *reg; + + /* check if IN FIFO is empty before stall */ + if (ep->dir_in) { + do { + value = ioread32(fotg210->reg + FOTG210_DCFESR); + } while (!(value & DCFESR_FIFO_EMPTY(ep->epnum - 1))); + } + + reg = (ep->dir_in) ? + fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : + fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); + value = ioread32(reg); + value |= INOUTEPMPSR_STL_EP; + iowrite32(value, reg); +} + +static void fotg210_clear_epnstall(struct fotg210_ep *ep) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 value; + void __iomem *reg; + + reg = (ep->dir_in) ? + fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : + fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); + value = ioread32(reg); + value &= ~INOUTEPMPSR_STL_EP; + iowrite32(value, reg); +} + +static int fotg210_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedge) +{ + struct fotg210_ep *ep; + struct fotg210_udc *fotg210; + unsigned long flags; + int ret = 0; + + ep = container_of(_ep, struct fotg210_ep, ep); + + fotg210 = ep->fotg210; + + spin_lock_irqsave(&ep->fotg210->lock, flags); + + if (value) { + fotg210_set_epnstall(ep); + ep->stall = 1; + if (wedge) + ep->wedged = 1; + } else { + fotg210_reset_tseq(fotg210, ep->epnum); + fotg210_clear_epnstall(ep); + ep->stall = 0; + ep->wedged = 0; + if (!list_empty(&ep->queue)) + fotg210_enable_fifo_int(ep); + } + + spin_unlock_irqrestore(&ep->fotg210->lock, flags); + return ret; +} + +static int fotg210_ep_set_halt(struct usb_ep *_ep, int value) +{ + return fotg210_set_halt_and_wedge(_ep, value, 0); +} + +static int fotg210_ep_set_wedge(struct usb_ep *_ep) +{ + return fotg210_set_halt_and_wedge(_ep, 1, 1); +} + +static void fotg210_ep_fifo_flush(struct usb_ep *_ep) +{ +} + +static struct usb_ep_ops fotg210_ep_ops = { + .enable = fotg210_ep_enable, + .disable = fotg210_ep_disable, + + .alloc_request = fotg210_ep_alloc_request, + .free_request = fotg210_ep_free_request, + + .queue = fotg210_ep_queue, + .dequeue = fotg210_ep_dequeue, + + .set_halt = fotg210_ep_set_halt, + .fifo_flush = fotg210_ep_fifo_flush, + .set_wedge = fotg210_ep_set_wedge, +}; + +static void fotg210_clear_tx0byte(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_TX0BYTE); + + value &= ~(TX0BYTE_EP1 | TX0BYTE_EP2 | TX0BYTE_EP3 + | TX0BYTE_EP4); + iowrite32(value, fotg210->reg + FOTG210_TX0BYTE); +} + +static void fotg210_clear_rx0byte(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_RX0BYTE); + + value &= ~(RX0BYTE_EP1 | RX0BYTE_EP2 | RX0BYTE_EP3 + | RX0BYTE_EP4); + iowrite32(value, fotg210->reg + FOTG210_RX0BYTE); +} + +/* read 8-byte setup packet only */ +static void fotg210_rdsetupp(struct fotg210_udc *fotg210, + u8 *buffer) +{ + int i = 0; + u8 *tmp = buffer; + u32 data; + u32 length = 8; + + iowrite32(DMATFNR_ACC_CXF, fotg210->reg + FOTG210_DMATFNR); + + for (i = (length >> 2); i > 0; i--) { + data = ioread32(fotg210->reg + FOTG210_CXPORT); + *tmp = data & 0xFF; + *(tmp + 1) = (data >> 8) & 0xFF; + *(tmp + 2) = (data >> 16) & 0xFF; + *(tmp + 3) = (data >> 24) & 0xFF; + tmp = tmp + 4; + } + + switch (length % 4) { + case 1: + data = ioread32(fotg210->reg + FOTG210_CXPORT); + *tmp = data & 0xFF; + break; + case 2: + data = ioread32(fotg210->reg + FOTG210_CXPORT); + *tmp = data & 0xFF; + *(tmp + 1) = (data >> 8) & 0xFF; + break; + case 3: + data = ioread32(fotg210->reg + FOTG210_CXPORT); + *tmp = data & 0xFF; + *(tmp + 1) = (data >> 8) & 0xFF; + *(tmp + 2) = (data >> 16) & 0xFF; + break; + default: + break; + } + + iowrite32(DMATFNR_DISDMA, fotg210->reg + FOTG210_DMATFNR); +} + +static void fotg210_set_configuration(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DAR); + + value |= DAR_AFT_CONF; + iowrite32(value, fotg210->reg + FOTG210_DAR); +} + +static void fotg210_set_dev_addr(struct fotg210_udc *fotg210, u32 addr) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DAR); + + value |= (addr & 0x7F); + iowrite32(value, fotg210->reg + FOTG210_DAR); +} + +static void fotg210_set_cxstall(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DCFESR); + + value |= DCFESR_CX_STL; + iowrite32(value, fotg210->reg + FOTG210_DCFESR); +} + +static void fotg210_request_error(struct fotg210_udc *fotg210) +{ + fotg210_set_cxstall(fotg210); + pr_err("request error!!\n"); +} + +static void fotg210_set_address(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + if (ctrl->wValue >= 0x0100) { + fotg210_request_error(fotg210); + } else { + fotg210_set_dev_addr(fotg210, ctrl->wValue); + fotg210_set_cxdone(fotg210); + } +} + +static void fotg210_set_feature(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + switch (ctrl->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + fotg210_set_cxdone(fotg210); + break; + case USB_RECIP_INTERFACE: + fotg210_set_cxdone(fotg210); + break; + case USB_RECIP_ENDPOINT: { + u8 epnum; + epnum = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; + if (epnum) + fotg210_set_epnstall(fotg210->ep[epnum]); + else + fotg210_set_cxstall(fotg210); + fotg210_set_cxdone(fotg210); + } + break; + default: + fotg210_request_error(fotg210); + break; + } +} + +static void fotg210_clear_feature(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + struct fotg210_ep *ep = + fotg210->ep[ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK]; + + switch (ctrl->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + fotg210_set_cxdone(fotg210); + break; + case USB_RECIP_INTERFACE: + fotg210_set_cxdone(fotg210); + break; + case USB_RECIP_ENDPOINT: + if (ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK) { + if (ep->wedged) { + fotg210_set_cxdone(fotg210); + break; + } + if (ep->stall) + fotg210_set_halt_and_wedge(&ep->ep, 0, 0); + } + fotg210_set_cxdone(fotg210); + break; + default: + fotg210_request_error(fotg210); + break; + } +} + +static int fotg210_is_epnstall(struct fotg210_ep *ep) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 value; + void __iomem *reg; + + reg = (ep->dir_in) ? + fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : + fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); + value = ioread32(reg); + return value & INOUTEPMPSR_STL_EP ? 1 : 0; +} + +static void fotg210_get_status(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + u8 epnum; + + switch (ctrl->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + fotg210->ep0_data = 1 << USB_DEVICE_SELF_POWERED; + break; + case USB_RECIP_INTERFACE: + fotg210->ep0_data = 0; + break; + case USB_RECIP_ENDPOINT: + epnum = ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK; + if (epnum) + fotg210->ep0_data = + fotg210_is_epnstall(fotg210->ep[epnum]) + << USB_ENDPOINT_HALT; + else + fotg210_request_error(fotg210); + break; + + default: + fotg210_request_error(fotg210); + return; /* exit */ + } + + fotg210->ep0_req->buf = &fotg210->ep0_data; + fotg210->ep0_req->length = 2; + + spin_unlock(&fotg210->lock); + fotg210_ep_queue(fotg210->gadget.ep0, fotg210->ep0_req, GFP_KERNEL); + spin_lock(&fotg210->lock); +} + +static int fotg210_setup_packet(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + u8 *p = (u8 *)ctrl; + u8 ret = 0; + + fotg210_rdsetupp(fotg210, p); + + fotg210->ep[0]->dir_in = ctrl->bRequestType & USB_DIR_IN; + + if (fotg210->gadget.speed == USB_SPEED_UNKNOWN) { + u32 value = ioread32(fotg210->reg + FOTG210_DMCR); + fotg210->gadget.speed = value & DMCR_HS_EN ? + USB_SPEED_HIGH : USB_SPEED_FULL; + } + + /* check request */ + if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { + switch (ctrl->bRequest) { + case USB_REQ_GET_STATUS: + fotg210_get_status(fotg210, ctrl); + break; + case USB_REQ_CLEAR_FEATURE: + fotg210_clear_feature(fotg210, ctrl); + break; + case USB_REQ_SET_FEATURE: + fotg210_set_feature(fotg210, ctrl); + break; + case USB_REQ_SET_ADDRESS: + fotg210_set_address(fotg210, ctrl); + break; + case USB_REQ_SET_CONFIGURATION: + fotg210_set_configuration(fotg210); + ret = 1; + break; + default: + ret = 1; + break; + } + } else { + ret = 1; + } + + return ret; +} + +static void fotg210_ep0out(struct fotg210_udc *fotg210) +{ + struct fotg210_ep *ep = fotg210->ep[0]; + + if (!list_empty(&ep->queue) && !ep->dir_in) { + struct fotg210_request *req; + + req = list_first_entry(&ep->queue, + struct fotg210_request, queue); + + if (req->req.length) + fotg210_start_dma(ep, req); + + if ((req->req.length - req->req.actual) < ep->ep.maxpacket) + fotg210_done(ep, req, 0); + } else { + pr_err("%s : empty queue\n", __func__); + } +} + +static void fotg210_ep0in(struct fotg210_udc *fotg210) +{ + struct fotg210_ep *ep = fotg210->ep[0]; + + if ((!list_empty(&ep->queue)) && (ep->dir_in)) { + struct fotg210_request *req; + + req = list_entry(ep->queue.next, + struct fotg210_request, queue); + + if (req->req.length) + fotg210_start_dma(ep, req); + + if ((req->req.length - req->req.actual) < ep->ep.maxpacket) + fotg210_done(ep, req, 0); + } else { + fotg210_set_cxdone(fotg210); + } +} + +static void fotg210_clear_comabt_int(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DISGR0); + + value &= ~DISGR0_CX_COMABT_INT; + iowrite32(value, fotg210->reg + FOTG210_DISGR0); +} + +static void fotg210_in_fifo_handler(struct fotg210_ep *ep) +{ + struct fotg210_request *req = list_entry(ep->queue.next, + struct fotg210_request, queue); + + if (req->req.length) + fotg210_start_dma(ep, req); + fotg210_done(ep, req, 0); +} + +static void fotg210_out_fifo_handler(struct fotg210_ep *ep) +{ + struct fotg210_request *req = list_entry(ep->queue.next, + struct fotg210_request, queue); + + fotg210_start_dma(ep, req); + + /* finish out transfer */ + if (req->req.length == req->req.actual || + req->req.actual < ep->ep.maxpacket) + fotg210_done(ep, req, 0); +} + +static irqreturn_t fotg210_irq(int irq, void *_fotg210) +{ + struct fotg210_udc *fotg210 = _fotg210; + u32 int_grp = ioread32(fotg210->reg + FOTG210_DIGR); + u32 int_msk = ioread32(fotg210->reg + FOTG210_DMIGR); + + int_grp &= ~int_msk; + + spin_lock(&fotg210->lock); + + if (int_grp & DIGR_INT_G2) { + void __iomem *reg = fotg210->reg + FOTG210_DISGR2; + u32 int_grp2 = ioread32(reg); + u32 int_msk2 = ioread32(fotg210->reg + FOTG210_DMISGR2); + u32 value; + + int_grp2 &= ~int_msk2; + + if (int_grp2 & DISGR2_USBRST_INT) { + value = ioread32(reg); + value &= ~DISGR2_USBRST_INT; + iowrite32(value, reg); + pr_info("fotg210 udc reset\n"); + } + if (int_grp2 & DISGR2_SUSP_INT) { + value = ioread32(reg); + value &= ~DISGR2_SUSP_INT; + iowrite32(value, reg); + pr_info("fotg210 udc suspend\n"); + } + if (int_grp2 & DISGR2_RESM_INT) { + value = ioread32(reg); + value &= ~DISGR2_RESM_INT; + iowrite32(value, reg); + pr_info("fotg210 udc resume\n"); + } + if (int_grp2 & DISGR2_ISO_SEQ_ERR_INT) { + value = ioread32(reg); + value &= ~DISGR2_ISO_SEQ_ERR_INT; + iowrite32(value, reg); + pr_info("fotg210 iso sequence error\n"); + } + if (int_grp2 & DISGR2_ISO_SEQ_ABORT_INT) { + value = ioread32(reg); + value &= ~DISGR2_ISO_SEQ_ABORT_INT; + iowrite32(value, reg); + pr_info("fotg210 iso sequence abort\n"); + } + if (int_grp2 & DISGR2_TX0BYTE_INT) { + fotg210_clear_tx0byte(fotg210); + value = ioread32(reg); + value &= ~DISGR2_TX0BYTE_INT; + iowrite32(value, reg); + pr_info("fotg210 transferred 0 byte\n"); + } + if (int_grp2 & DISGR2_RX0BYTE_INT) { + fotg210_clear_rx0byte(fotg210); + value = ioread32(reg); + value &= ~DISGR2_RX0BYTE_INT; + iowrite32(value, reg); + pr_info("fotg210 received 0 byte\n"); + } + if (int_grp2 & DISGR2_DMA_ERROR) { + value = ioread32(reg); + value &= ~DISGR2_DMA_ERROR; + iowrite32(value, reg); + } + } + + if (int_grp & DIGR_INT_G0) { + void __iomem *reg = fotg210->reg + FOTG210_DISGR0; + u32 int_grp0 = ioread32(reg); + u32 int_msk0 = ioread32(fotg210->reg + FOTG210_DMISGR0); + struct usb_ctrlrequest ctrl; + + int_grp0 &= ~int_msk0; + + /* the highest priority in this source register */ + if (int_grp0 & DISGR0_CX_COMABT_INT) { + fotg210_clear_comabt_int(fotg210); + pr_info("fotg210 CX command abort\n"); + } + + if (int_grp0 & DISGR0_CX_SETUP_INT) { + if (fotg210_setup_packet(fotg210, &ctrl)) { + spin_unlock(&fotg210->lock); + if (fotg210->driver->setup(&fotg210->gadget, + &ctrl) < 0) + fotg210_set_cxstall(fotg210); + spin_lock(&fotg210->lock); + } + } + if (int_grp0 & DISGR0_CX_COMEND_INT) + pr_info("fotg210 cmd end\n"); + + if (int_grp0 & DISGR0_CX_IN_INT) + fotg210_ep0in(fotg210); + + if (int_grp0 & DISGR0_CX_OUT_INT) + fotg210_ep0out(fotg210); + + if (int_grp0 & DISGR0_CX_COMFAIL_INT) { + fotg210_set_cxstall(fotg210); + pr_info("fotg210 ep0 fail\n"); + } + } + + if (int_grp & DIGR_INT_G1) { + void __iomem *reg = fotg210->reg + FOTG210_DISGR1; + u32 int_grp1 = ioread32(reg); + u32 int_msk1 = ioread32(fotg210->reg + FOTG210_DMISGR1); + int fifo; + + int_grp1 &= ~int_msk1; + + for (fifo = 0; fifo < FOTG210_MAX_FIFO_NUM; fifo++) { + if (int_grp1 & DISGR1_IN_INT(fifo)) + fotg210_in_fifo_handler(fotg210->ep[fifo + 1]); + + if ((int_grp1 & DISGR1_OUT_INT(fifo)) || + (int_grp1 & DISGR1_SPK_INT(fifo))) + fotg210_out_fifo_handler(fotg210->ep[fifo + 1]); + } + } + + spin_unlock(&fotg210->lock); + + return IRQ_HANDLED; +} + +static void fotg210_disable_unplug(struct fotg210_udc *fotg210) +{ + u32 reg = ioread32(fotg210->reg + FOTG210_PHYTMSR); + + reg &= ~PHYTMSR_UNPLUG; + iowrite32(reg, fotg210->reg + FOTG210_PHYTMSR); +} + +static int fotg210_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) +{ + struct fotg210_udc *fotg210 = gadget_to_fotg210(g); + u32 value; + + /* hook up the driver */ + driver->driver.bus = NULL; + fotg210->driver = driver; + + /* enable device global interrupt */ + value = ioread32(fotg210->reg + FOTG210_DMCR); + value |= DMCR_GLINT_EN; + iowrite32(value, fotg210->reg + FOTG210_DMCR); + + return 0; +} + +static void fotg210_init(struct fotg210_udc *fotg210) +{ + u32 value; + + /* disable global interrupt and set int polarity to active high */ + iowrite32(GMIR_MHC_INT | GMIR_MOTG_INT | GMIR_INT_POLARITY, + fotg210->reg + FOTG210_GMIR); + + /* disable device global interrupt */ + value = ioread32(fotg210->reg + FOTG210_DMCR); + value &= ~DMCR_GLINT_EN; + iowrite32(value, fotg210->reg + FOTG210_DMCR); + + /* disable all fifo interrupt */ + iowrite32(~(u32)0, fotg210->reg + FOTG210_DMISGR1); + + /* disable cmd end */ + value = ioread32(fotg210->reg + FOTG210_DMISGR0); + value |= DMISGR0_MCX_COMEND; + iowrite32(value, fotg210->reg + FOTG210_DMISGR0); +} + +static int fotg210_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) +{ + struct fotg210_udc *fotg210 = gadget_to_fotg210(g); + unsigned long flags; + + spin_lock_irqsave(&fotg210->lock, flags); + + fotg210_init(fotg210); + fotg210->driver = NULL; + + spin_unlock_irqrestore(&fotg210->lock, flags); + + return 0; +} + +static struct usb_gadget_ops fotg210_gadget_ops = { + .udc_start = fotg210_udc_start, + .udc_stop = fotg210_udc_stop, +}; + +static int fotg210_udc_remove(struct platform_device *pdev) +{ + struct fotg210_udc *fotg210 = platform_get_drvdata(pdev); + + usb_del_gadget_udc(&fotg210->gadget); + iounmap(fotg210->reg); + free_irq(platform_get_irq(pdev, 0), fotg210); + + fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req); + kfree(fotg210); + + return 0; +} + +static int fotg210_udc_probe(struct platform_device *pdev) +{ + struct resource *res, *ires; + struct fotg210_udc *fotg210 = NULL; + struct fotg210_ep *_ep[FOTG210_MAX_NUM_EP]; + int ret = 0; + int i; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + pr_err("platform_get_resource error.\n"); + return -ENODEV; + } + + ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!ires) { + pr_err("platform_get_resource IORESOURCE_IRQ error.\n"); + return -ENODEV; + } + + ret = -ENOMEM; + + /* initialize udc */ + fotg210 = kzalloc(sizeof(struct fotg210_udc), GFP_KERNEL); + if (fotg210 == NULL) { + pr_err("kzalloc error\n"); + goto err_alloc; + } + + for (i = 0; i < FOTG210_MAX_NUM_EP; i++) { + _ep[i] = kzalloc(sizeof(struct fotg210_ep), GFP_KERNEL); + if (_ep[i] == NULL) { + pr_err("_ep kzalloc error\n"); + goto err_alloc; + } + fotg210->ep[i] = _ep[i]; + } + + fotg210->reg = ioremap(res->start, resource_size(res)); + if (fotg210->reg == NULL) { + pr_err("ioremap error.\n"); + goto err_map; + } + + spin_lock_init(&fotg210->lock); + + platform_set_drvdata(pdev, fotg210); + + fotg210->gadget.ops = &fotg210_gadget_ops; + + fotg210->gadget.max_speed = USB_SPEED_HIGH; + fotg210->gadget.dev.parent = &pdev->dev; + fotg210->gadget.dev.dma_mask = pdev->dev.dma_mask; + fotg210->gadget.name = udc_name; + + INIT_LIST_HEAD(&fotg210->gadget.ep_list); + + for (i = 0; i < FOTG210_MAX_NUM_EP; i++) { + struct fotg210_ep *ep = fotg210->ep[i]; + + if (i) { + INIT_LIST_HEAD(&fotg210->ep[i]->ep.ep_list); + list_add_tail(&fotg210->ep[i]->ep.ep_list, + &fotg210->gadget.ep_list); + } + ep->fotg210 = fotg210; + INIT_LIST_HEAD(&ep->queue); + ep->ep.name = fotg210_ep_name[i]; + ep->ep.ops = &fotg210_ep_ops; + } + fotg210->ep[0]->ep.maxpacket = 0x40; + fotg210->gadget.ep0 = &fotg210->ep[0]->ep; + INIT_LIST_HEAD(&fotg210->gadget.ep0->ep_list); + + fotg210->ep0_req = fotg210_ep_alloc_request(&fotg210->ep[0]->ep, + GFP_KERNEL); + if (fotg210->ep0_req == NULL) + goto err_req; + + fotg210_init(fotg210); + + fotg210_disable_unplug(fotg210); + + ret = request_irq(ires->start, fotg210_irq, IRQF_SHARED, + udc_name, fotg210); + if (ret < 0) { + pr_err("request_irq error (%d)\n", ret); + goto err_irq; + } + + ret = usb_add_gadget_udc(&pdev->dev, &fotg210->gadget); + if (ret) + goto err_add_udc; + + dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); + + return 0; + +err_add_udc: +err_irq: + free_irq(ires->start, fotg210); + +err_req: + fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req); + +err_map: + if (fotg210->reg) + iounmap(fotg210->reg); + +err_alloc: + kfree(fotg210); + + return ret; +} + +static struct platform_driver fotg210_driver = { + .driver = { + .name = (char *)udc_name, + .owner = THIS_MODULE, + }, + .probe = fotg210_udc_probe, + .remove = fotg210_udc_remove, +}; + +module_platform_driver(fotg210_driver); + +MODULE_AUTHOR("Yuan-Hsin Chen <yhchen@faraday-tech.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/usb/gadget/fotg210.h b/drivers/usb/gadget/fotg210.h new file mode 100644 index 000000000000..bbf991bcbe7c --- /dev/null +++ b/drivers/usb/gadget/fotg210.h @@ -0,0 +1,253 @@ +/* + * Faraday FOTG210 USB OTG controller + * + * Copyright (C) 2013 Faraday Technology Corporation + * Author: Yuan-Hsin Chen <yhchen@faraday-tech.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/kernel.h> + +#define FOTG210_MAX_NUM_EP 5 /* ep0...ep4 */ +#define FOTG210_MAX_FIFO_NUM 4 /* fifo0...fifo4 */ + +/* Global Mask of HC/OTG/DEV interrupt Register(0xC4) */ +#define FOTG210_GMIR 0xC4 +#define GMIR_INT_POLARITY 0x8 /*Active High*/ +#define GMIR_MHC_INT 0x4 +#define GMIR_MOTG_INT 0x2 +#define GMIR_MDEV_INT 0x1 + +/* Device Main Control Register(0x100) */ +#define FOTG210_DMCR 0x100 +#define DMCR_HS_EN (1 << 6) +#define DMCR_CHIP_EN (1 << 5) +#define DMCR_SFRST (1 << 4) +#define DMCR_GOSUSP (1 << 3) +#define DMCR_GLINT_EN (1 << 2) +#define DMCR_HALF_SPEED (1 << 1) +#define DMCR_CAP_RMWAKUP (1 << 0) + +/* Device Address Register(0x104) */ +#define FOTG210_DAR 0x104 +#define DAR_AFT_CONF (1 << 7) + +/* Device Test Register(0x108) */ +#define FOTG210_DTR 0x108 +#define DTR_TST_CLRFF (1 << 0) + +/* PHY Test Mode Selector register(0x114) */ +#define FOTG210_PHYTMSR 0x114 +#define PHYTMSR_TST_PKT (1 << 4) +#define PHYTMSR_TST_SE0NAK (1 << 3) +#define PHYTMSR_TST_KSTA (1 << 2) +#define PHYTMSR_TST_JSTA (1 << 1) +#define PHYTMSR_UNPLUG (1 << 0) + +/* Cx configuration and FIFO Empty Status register(0x120) */ +#define FOTG210_DCFESR 0x120 +#define DCFESR_FIFO_EMPTY(fifo) (1 << 8 << (fifo)) +#define DCFESR_CX_EMP (1 << 5) +#define DCFESR_CX_CLR (1 << 3) +#define DCFESR_CX_STL (1 << 2) +#define DCFESR_TST_PKDONE (1 << 1) +#define DCFESR_CX_DONE (1 << 0) + +/* Device IDLE Counter Register(0x124) */ +#define FOTG210_DICR 0x124 + +/* Device Mask of Interrupt Group Register (0x130) */ +#define FOTG210_DMIGR 0x130 +#define DMIGR_MINT_G0 (1 << 0) + +/* Device Mask of Interrupt Source Group 0(0x134) */ +#define FOTG210_DMISGR0 0x134 +#define DMISGR0_MCX_COMEND (1 << 3) +#define DMISGR0_MCX_OUT_INT (1 << 2) +#define DMISGR0_MCX_IN_INT (1 << 1) +#define DMISGR0_MCX_SETUP_INT (1 << 0) + +/* Device Mask of Interrupt Source Group 1 Register(0x138)*/ +#define FOTG210_DMISGR1 0x138 +#define DMISGR1_MF3_IN_INT (1 << 19) +#define DMISGR1_MF2_IN_INT (1 << 18) +#define DMISGR1_MF1_IN_INT (1 << 17) +#define DMISGR1_MF0_IN_INT (1 << 16) +#define DMISGR1_MF_IN_INT(fifo) (1 << (16 + (fifo))) +#define DMISGR1_MF3_SPK_INT (1 << 7) +#define DMISGR1_MF3_OUT_INT (1 << 6) +#define DMISGR1_MF2_SPK_INT (1 << 5) +#define DMISGR1_MF2_OUT_INT (1 << 4) +#define DMISGR1_MF1_SPK_INT (1 << 3) +#define DMISGR1_MF1_OUT_INT (1 << 2) +#define DMISGR1_MF0_SPK_INT (1 << 1) +#define DMISGR1_MF0_OUT_INT (1 << 0) +#define DMISGR1_MF_OUTSPK_INT(fifo) (0x3 << (fifo) * 2) + +/* Device Mask of Interrupt Source Group 2 Register (0x13C) */ +#define FOTG210_DMISGR2 0x13C +#define DMISGR2_MDMA_ERROR (1 << 8) +#define DMISGR2_MDMA_CMPLT (1 << 7) + +/* Device Interrupt group Register (0x140) */ +#define FOTG210_DIGR 0x140 +#define DIGR_INT_G2 (1 << 2) +#define DIGR_INT_G1 (1 << 1) +#define DIGR_INT_G0 (1 << 0) + +/* Device Interrupt Source Group 0 Register (0x144) */ +#define FOTG210_DISGR0 0x144 +#define DISGR0_CX_COMABT_INT (1 << 5) +#define DISGR0_CX_COMFAIL_INT (1 << 4) +#define DISGR0_CX_COMEND_INT (1 << 3) +#define DISGR0_CX_OUT_INT (1 << 2) +#define DISGR0_CX_IN_INT (1 << 1) +#define DISGR0_CX_SETUP_INT (1 << 0) + +/* Device Interrupt Source Group 1 Register (0x148) */ +#define FOTG210_DISGR1 0x148 +#define DISGR1_OUT_INT(fifo) (1 << ((fifo) * 2)) +#define DISGR1_SPK_INT(fifo) (1 << 1 << ((fifo) * 2)) +#define DISGR1_IN_INT(fifo) (1 << 16 << (fifo)) + +/* Device Interrupt Source Group 2 Register (0x14C) */ +#define FOTG210_DISGR2 0x14C +#define DISGR2_DMA_ERROR (1 << 8) +#define DISGR2_DMA_CMPLT (1 << 7) +#define DISGR2_RX0BYTE_INT (1 << 6) +#define DISGR2_TX0BYTE_INT (1 << 5) +#define DISGR2_ISO_SEQ_ABORT_INT (1 << 4) +#define DISGR2_ISO_SEQ_ERR_INT (1 << 3) +#define DISGR2_RESM_INT (1 << 2) +#define DISGR2_SUSP_INT (1 << 1) +#define DISGR2_USBRST_INT (1 << 0) + +/* Device Receive Zero-Length Data Packet Register (0x150)*/ +#define FOTG210_RX0BYTE 0x150 +#define RX0BYTE_EP8 (1 << 7) +#define RX0BYTE_EP7 (1 << 6) +#define RX0BYTE_EP6 (1 << 5) +#define RX0BYTE_EP5 (1 << 4) +#define RX0BYTE_EP4 (1 << 3) +#define RX0BYTE_EP3 (1 << 2) +#define RX0BYTE_EP2 (1 << 1) +#define RX0BYTE_EP1 (1 << 0) + +/* Device Transfer Zero-Length Data Packet Register (0x154)*/ +#define FOTG210_TX0BYTE 0x154 +#define TX0BYTE_EP8 (1 << 7) +#define TX0BYTE_EP7 (1 << 6) +#define TX0BYTE_EP6 (1 << 5) +#define TX0BYTE_EP5 (1 << 4) +#define TX0BYTE_EP4 (1 << 3) +#define TX0BYTE_EP3 (1 << 2) +#define TX0BYTE_EP2 (1 << 1) +#define TX0BYTE_EP1 (1 << 0) + +/* Device IN Endpoint x MaxPacketSize Register(0x160+4*(x-1)) */ +#define FOTG210_INEPMPSR(ep) (0x160 + 4 * ((ep) - 1)) +#define INOUTEPMPSR_MPS(mps) ((mps) & 0x2FF) +#define INOUTEPMPSR_STL_EP (1 << 11) +#define INOUTEPMPSR_RESET_TSEQ (1 << 12) + +/* Device OUT Endpoint x MaxPacketSize Register(0x180+4*(x-1)) */ +#define FOTG210_OUTEPMPSR(ep) (0x180 + 4 * ((ep) - 1)) + +/* Device Endpoint 1~4 Map Register (0x1A0) */ +#define FOTG210_EPMAP 0x1A0 +#define EPMAP_FIFONO(ep, dir) \ + ((((ep) - 1) << ((ep) - 1) * 8) << ((dir) ? 0 : 4)) +#define EPMAP_FIFONOMSK(ep, dir) \ + ((3 << ((ep) - 1) * 8) << ((dir) ? 0 : 4)) + +/* Device FIFO Map Register (0x1A8) */ +#define FOTG210_FIFOMAP 0x1A8 +#define FIFOMAP_DIROUT(fifo) (0x0 << 4 << (fifo) * 8) +#define FIFOMAP_DIRIN(fifo) (0x1 << 4 << (fifo) * 8) +#define FIFOMAP_BIDIR(fifo) (0x2 << 4 << (fifo) * 8) +#define FIFOMAP_NA(fifo) (0x3 << 4 << (fifo) * 8) +#define FIFOMAP_EPNO(ep) ((ep) << ((ep) - 1) * 8) +#define FIFOMAP_EPNOMSK(ep) (0xF << ((ep) - 1) * 8) + +/* Device FIFO Confuguration Register (0x1AC) */ +#define FOTG210_FIFOCF 0x1AC +#define FIFOCF_TYPE(type, fifo) ((type) << (fifo) * 8) +#define FIFOCF_BLK_SIN(fifo) (0x0 << (fifo) * 8 << 2) +#define FIFOCF_BLK_DUB(fifo) (0x1 << (fifo) * 8 << 2) +#define FIFOCF_BLK_TRI(fifo) (0x2 << (fifo) * 8 << 2) +#define FIFOCF_BLKSZ_512(fifo) (0x0 << (fifo) * 8 << 4) +#define FIFOCF_BLKSZ_1024(fifo) (0x1 << (fifo) * 8 << 4) +#define FIFOCF_FIFO_EN(fifo) (0x1 << (fifo) * 8 << 5) + +/* Device FIFO n Instruction and Byte Count Register (0x1B0+4*n) */ +#define FOTG210_FIBCR(fifo) (0x1B0 + (fifo) * 4) +#define FIBCR_BCFX 0x7FF +#define FIBCR_FFRST (1 << 12) + +/* Device DMA Target FIFO Number Register (0x1C0) */ +#define FOTG210_DMATFNR 0x1C0 +#define DMATFNR_ACC_CXF (1 << 4) +#define DMATFNR_ACC_F3 (1 << 3) +#define DMATFNR_ACC_F2 (1 << 2) +#define DMATFNR_ACC_F1 (1 << 1) +#define DMATFNR_ACC_F0 (1 << 0) +#define DMATFNR_ACC_FN(fifo) (1 << (fifo)) +#define DMATFNR_DISDMA 0 + +/* Device DMA Controller Parameter setting 1 Register (0x1C8) */ +#define FOTG210_DMACPSR1 0x1C8 +#define DMACPSR1_DMA_LEN(len) (((len) & 0xFFFF) << 8) +#define DMACPSR1_DMA_ABORT (1 << 3) +#define DMACPSR1_DMA_TYPE(dir_in) (((dir_in) ? 1 : 0) << 1) +#define DMACPSR1_DMA_START (1 << 0) + +/* Device DMA Controller Parameter setting 2 Register (0x1CC) */ +#define FOTG210_DMACPSR2 0x1CC + +/* Device DMA Controller Parameter setting 3 Register (0x1CC) */ +#define FOTG210_CXPORT 0x1D0 + +struct fotg210_request { + struct usb_request req; + struct list_head queue; +}; + +struct fotg210_ep { + struct usb_ep ep; + struct fotg210_udc *fotg210; + + struct list_head queue; + unsigned stall:1; + unsigned wedged:1; + unsigned use_dma:1; + + unsigned char epnum; + unsigned char type; + unsigned char dir_in; + unsigned int maxp; + const struct usb_endpoint_descriptor *desc; +}; + +struct fotg210_udc { + spinlock_t lock; /* protect the struct */ + void __iomem *reg; + + unsigned long irq_trigger; + + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + + struct fotg210_ep *ep[FOTG210_MAX_NUM_EP]; + + struct usb_request *ep0_req; /* for internal request */ + __le16 ep0_data; + u8 ep0_dir; /* 0/0x80 out/in */ + + u8 reenum; /* if re-enumeration */ +}; + +#define gadget_to_fotg210(g) container_of((g), struct fotg210_udc, gadget) diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c index d3bd7b095ba3..9b140fc4d3bc 100644 --- a/drivers/usb/gadget/fsl_mxc_udc.c +++ b/drivers/usb/gadget/fsl_mxc_udc.c @@ -33,7 +33,7 @@ int fsl_udc_clk_init(struct platform_device *pdev) unsigned long freq; int ret; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); mxc_ipg_clk = devm_clk_get(&pdev->dev, "ipg"); if (IS_ERR(mxc_ipg_clk)) { @@ -80,7 +80,7 @@ eclkrate: int fsl_udc_clk_finalize(struct platform_device *pdev) { - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); int ret = 0; /* workaround ENGcm09152 for i.MX35 */ diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c index 9a7ee3347e4d..f3bb363f1d4a 100644 --- a/drivers/usb/gadget/fsl_qe_udc.c +++ b/drivers/usb/gadget/fsl_qe_udc.c @@ -2589,7 +2589,7 @@ static int qe_udc_probe(struct platform_device *ofdev) if (ret) goto err6; - dev_set_drvdata(&ofdev->dev, udc); + platform_set_drvdata(ofdev, udc); dev_info(udc->dev, "%s USB controller initialized as device\n", (udc->soc_type == PORT_QE) ? "QE" : "CPM"); @@ -2640,7 +2640,7 @@ static int qe_udc_resume(struct platform_device *dev) static int qe_udc_remove(struct platform_device *ofdev) { - struct qe_udc *udc = dev_get_drvdata(&ofdev->dev); + struct qe_udc *udc = platform_get_drvdata(ofdev); struct qe_ep *ep; unsigned int size; DECLARE_COMPLETION(done); diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index a766a4ca1cb7..36ac7cfba91d 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -2248,7 +2248,7 @@ static int __init struct_udc_setup(struct fsl_udc *udc, struct fsl_usb2_platform_data *pdata; size_t size; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); udc->phy_mode = pdata->phy_mode; udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL); @@ -2343,7 +2343,7 @@ static int __init fsl_udc_probe(struct platform_device *pdev) return -ENOMEM; } - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); udc_controller->pdata = pdata; spin_lock_init(&udc_controller->lock); udc_controller->stopped = 1; @@ -2524,7 +2524,7 @@ err_kfree: static int __exit fsl_udc_remove(struct platform_device *pdev) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); DECLARE_COMPLETION(done); diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c index b8632d40f8bf..f1dd6daabe21 100644 --- a/drivers/usb/gadget/fusb300_udc.c +++ b/drivers/usb/gadget/fusb300_udc.c @@ -557,7 +557,7 @@ static void fusb300_set_cxdone(struct fusb300 *fusb300) } /* read data from cx fifo */ -void fusb300_rdcxf(struct fusb300 *fusb300, +static void fusb300_rdcxf(struct fusb300 *fusb300, u8 *buffer, u32 length) { int i = 0; @@ -1347,7 +1347,7 @@ static const struct usb_gadget_ops fusb300_gadget_ops = { static int __exit fusb300_remove(struct platform_device *pdev) { - struct fusb300 *fusb300 = dev_get_drvdata(&pdev->dev); + struct fusb300 *fusb300 = platform_get_drvdata(pdev); usb_del_gadget_udc(&fusb300->gadget); iounmap(fusb300->reg); @@ -1416,7 +1416,7 @@ static int __init fusb300_probe(struct platform_device *pdev) spin_lock_init(&fusb300->lock); - dev_set_drvdata(&pdev->dev, fusb300); + platform_set_drvdata(pdev, fusb300); fusb300->gadget.ops = &fusb300_gadget_ops; diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c index 787a78e92aa2..5327c82472ed 100644 --- a/drivers/usb/gadget/g_ffs.c +++ b/drivers/usb/gadget/g_ffs.c @@ -28,15 +28,18 @@ # define USB_ETH_RNDIS y # endif +#define USBF_ECM_INCLUDED # include "f_ecm.c" +#define USB_FSUBSET_INCLUDED # include "f_subset.c" # ifdef USB_ETH_RNDIS +# define USB_FRNDIS_INCLUDED # include "f_rndis.c" -# include "rndis.c" +# include "rndis.h" # endif -# include "u_ether.c" +# include "u_ether.h" -static u8 gfs_hostaddr[ETH_ALEN]; +static u8 gfs_host_mac[ETH_ALEN]; static struct eth_dev *the_dev; # ifdef CONFIG_USB_FUNCTIONFS_ETH static int eth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], @@ -45,7 +48,7 @@ static int eth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], #else # define the_dev NULL # define gether_cleanup(dev) do { } while (0) -# define gfs_hostaddr NULL +# define gfs_host_mac NULL struct eth_dev; #endif @@ -73,6 +76,8 @@ struct gfs_ffs_obj { USB_GADGET_COMPOSITE_OPTIONS(); +USB_ETHERNET_MODULE_PARAMETERS(); + static struct usb_device_descriptor gfs_dev_desc = { .bLength = sizeof gfs_dev_desc, .bDescriptorType = USB_DT_DEVICE, @@ -350,7 +355,8 @@ static int gfs_bind(struct usb_composite_dev *cdev) if (missing_funcs) return -ENODEV; #if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS - the_dev = gether_setup(cdev->gadget, gfs_hostaddr); + the_dev = gether_setup(cdev->gadget, dev_addr, host_addr, gfs_host_mac, + qmult); #endif if (IS_ERR(the_dev)) { ret = PTR_ERR(the_dev); @@ -446,7 +452,7 @@ static int gfs_do_config(struct usb_configuration *c) } if (gc->eth) { - ret = gc->eth(c, gfs_hostaddr, the_dev); + ret = gc->eth(c, gfs_host_mac, the_dev); if (unlikely(ret < 0)) return ret; } diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c index 52dd6cc6c0aa..c64deb9e3d62 100644 --- a/drivers/usb/gadget/goku_udc.c +++ b/drivers/usb/gadget/goku_udc.c @@ -772,7 +772,7 @@ goku_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) } /* else pio or dma irq handler advances the queue. */ - if (likely(req != 0)) + if (likely(req != NULL)) list_add_tail(&req->queue, &ep->queue); if (likely(!list_empty(&ep->queue)) diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c index c36260ea8bf2..778613eb37af 100644 --- a/drivers/usb/gadget/hid.c +++ b/drivers/usb/gadget/hid.c @@ -185,7 +185,7 @@ static int __exit hid_unbind(struct usb_composite_dev *cdev) static int __init hidg_plat_driver_probe(struct platform_device *pdev) { - struct hidg_func_descriptor *func = pdev->dev.platform_data; + struct hidg_func_descriptor *func = dev_get_platdata(&pdev->dev); struct hidg_func_node *entry; if (!func) { diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c deleted file mode 100644 index 9b2d24e4c95f..000000000000 --- a/drivers/usb/gadget/imx_udc.c +++ /dev/null @@ -1,1544 +0,0 @@ -/* - * driver/usb/gadget/imx_udc.c - * - * Copyright (C) 2005 Mike Lee <eemike@gmail.com> - * Copyright (C) 2008 Darius Augulis <augulis.darius@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/list.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/device.h> -#include <linux/dma-mapping.h> -#include <linux/clk.h> -#include <linux/delay.h> -#include <linux/timer.h> -#include <linux/slab.h> -#include <linux/prefetch.h> - -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - -#include <linux/platform_data/usb-imx_udc.h> -#include <mach/hardware.h> - -#include "imx_udc.h" - -static const char driver_name[] = "imx_udc"; -static const char ep0name[] = "ep0"; - -void ep0_chg_stat(const char *label, struct imx_udc_struct *imx_usb, - enum ep0_state stat); - -/******************************************************************************* - * IMX UDC hardware related functions - ******************************************************************************* - */ - -void imx_udc_enable(struct imx_udc_struct *imx_usb) -{ - int temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_FE_ENA | CTRL_AFE_ENA, - imx_usb->base + USB_CTRL); - imx_usb->gadget.speed = USB_SPEED_FULL; -} - -void imx_udc_disable(struct imx_udc_struct *imx_usb) -{ - int temp = __raw_readl(imx_usb->base + USB_CTRL); - - __raw_writel(temp & ~(CTRL_FE_ENA | CTRL_AFE_ENA), - imx_usb->base + USB_CTRL); - - ep0_chg_stat(__func__, imx_usb, EP0_IDLE); - imx_usb->gadget.speed = USB_SPEED_UNKNOWN; -} - -void imx_udc_reset(struct imx_udc_struct *imx_usb) -{ - int temp = __raw_readl(imx_usb->base + USB_ENAB); - - /* set RST bit */ - __raw_writel(temp | ENAB_RST, imx_usb->base + USB_ENAB); - - /* wait RST bit to clear */ - do {} while (__raw_readl(imx_usb->base + USB_ENAB) & ENAB_RST); - - /* wait CFG bit to assert */ - do {} while (!(__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG)); - - /* udc module is now ready */ -} - -void imx_udc_config(struct imx_udc_struct *imx_usb) -{ - u8 ep_conf[5]; - u8 i, j, cfg; - struct imx_ep_struct *imx_ep; - - /* wait CFG bit to assert */ - do {} while (!(__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG)); - - /* Download the endpoint buffer for endpoint 0. */ - for (j = 0; j < 5; j++) { - i = (j == 2 ? imx_usb->imx_ep[0].fifosize : 0x00); - __raw_writeb(i, imx_usb->base + USB_DDAT); - do {} while (__raw_readl(imx_usb->base + USB_DADR) & DADR_BSY); - } - - /* Download the endpoint buffers for endpoints 1-5. - * We specify two configurations, one interface - */ - for (cfg = 1; cfg < 3; cfg++) { - for (i = 1; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - /* EP no | Config no */ - ep_conf[0] = (i << 4) | (cfg << 2); - /* Type | Direction */ - ep_conf[1] = (imx_ep->bmAttributes << 3) | - (EP_DIR(imx_ep) << 2); - /* Max packet size */ - ep_conf[2] = imx_ep->fifosize; - /* TRXTYP */ - ep_conf[3] = 0xC0; - /* FIFO no */ - ep_conf[4] = i; - - D_INI(imx_usb->dev, - "<%s> ep%d_conf[%d]:" - "[%02x-%02x-%02x-%02x-%02x]\n", - __func__, i, cfg, - ep_conf[0], ep_conf[1], ep_conf[2], - ep_conf[3], ep_conf[4]); - - for (j = 0; j < 5; j++) { - __raw_writeb(ep_conf[j], - imx_usb->base + USB_DDAT); - do {} while (__raw_readl(imx_usb->base - + USB_DADR) - & DADR_BSY); - } - } - } - - /* wait CFG bit to clear */ - do {} while (__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG); -} - -void imx_udc_init_irq(struct imx_udc_struct *imx_usb) -{ - int i; - - /* Mask and clear all irqs */ - __raw_writel(0xFFFFFFFF, imx_usb->base + USB_MASK); - __raw_writel(0xFFFFFFFF, imx_usb->base + USB_INTR); - for (i = 0; i < IMX_USB_NB_EP; i++) { - __raw_writel(0x1FF, imx_usb->base + USB_EP_MASK(i)); - __raw_writel(0x1FF, imx_usb->base + USB_EP_INTR(i)); - } - - /* Enable USB irqs */ - __raw_writel(INTR_MSOF | INTR_FRAME_MATCH, imx_usb->base + USB_MASK); - - /* Enable EP0 irqs */ - __raw_writel(0x1FF & ~(EPINTR_DEVREQ | EPINTR_MDEVREQ | EPINTR_EOT - | EPINTR_EOF | EPINTR_FIFO_EMPTY | EPINTR_FIFO_FULL), - imx_usb->base + USB_EP_MASK(0)); -} - -void imx_udc_init_ep(struct imx_udc_struct *imx_usb) -{ - int i, max, temp; - struct imx_ep_struct *imx_ep; - for (i = 0; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - switch (imx_ep->fifosize) { - case 8: - max = 0; - break; - case 16: - max = 1; - break; - case 32: - max = 2; - break; - case 64: - max = 3; - break; - default: - max = 1; - break; - } - temp = (EP_DIR(imx_ep) << 7) | (max << 5) - | (imx_ep->bmAttributes << 3); - __raw_writel(temp, imx_usb->base + USB_EP_STAT(i)); - __raw_writel(temp | EPSTAT_FLUSH, - imx_usb->base + USB_EP_STAT(i)); - D_INI(imx_usb->dev, "<%s> ep%d_stat %08x\n", __func__, i, - __raw_readl(imx_usb->base + USB_EP_STAT(i))); - } -} - -void imx_udc_init_fifo(struct imx_udc_struct *imx_usb) -{ - int i, temp; - struct imx_ep_struct *imx_ep; - for (i = 0; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - - /* Fifo control */ - temp = EP_DIR(imx_ep) ? 0x0B000000 : 0x0F000000; - __raw_writel(temp, imx_usb->base + USB_EP_FCTRL(i)); - D_INI(imx_usb->dev, "<%s> ep%d_fctrl %08x\n", __func__, i, - __raw_readl(imx_usb->base + USB_EP_FCTRL(i))); - - /* Fifo alarm */ - temp = (i ? imx_ep->fifosize / 2 : 0); - __raw_writel(temp, imx_usb->base + USB_EP_FALRM(i)); - D_INI(imx_usb->dev, "<%s> ep%d_falrm %08x\n", __func__, i, - __raw_readl(imx_usb->base + USB_EP_FALRM(i))); - } -} - -static void imx_udc_init(struct imx_udc_struct *imx_usb) -{ - /* Reset UDC */ - imx_udc_reset(imx_usb); - - /* Download config to enpoint buffer */ - imx_udc_config(imx_usb); - - /* Setup interrups */ - imx_udc_init_irq(imx_usb); - - /* Setup endpoints */ - imx_udc_init_ep(imx_usb); - - /* Setup fifos */ - imx_udc_init_fifo(imx_usb); -} - -void imx_ep_irq_enable(struct imx_ep_struct *imx_ep) -{ - - int i = EP_NO(imx_ep); - - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_MASK(i)); - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_INTR(i)); - __raw_writel(0x1FF & ~(EPINTR_EOT | EPINTR_EOF), - imx_ep->imx_usb->base + USB_EP_MASK(i)); -} - -void imx_ep_irq_disable(struct imx_ep_struct *imx_ep) -{ - - int i = EP_NO(imx_ep); - - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_MASK(i)); - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_INTR(i)); -} - -int imx_ep_empty(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - - return __raw_readl(imx_usb->base + USB_EP_FSTAT(EP_NO(imx_ep))) - & FSTAT_EMPTY; -} - -unsigned imx_fifo_bcount(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - - return (__raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))) - & EPSTAT_BCOUNT) >> 16; -} - -void imx_flush(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - - int temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); - __raw_writel(temp | EPSTAT_FLUSH, - imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); -} - -void imx_ep_stall(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - int temp, i; - - D_ERR(imx_usb->dev, - "<%s> Forced stall on %s\n", __func__, imx_ep->ep.name); - - imx_flush(imx_ep); - - /* Special care for ep0 */ - if (!EP_NO(imx_ep)) { - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_CMDOVER | CTRL_CMDERROR, - imx_usb->base + USB_CTRL); - do { } while (__raw_readl(imx_usb->base + USB_CTRL) - & CTRL_CMDOVER); - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp & ~CTRL_CMDERROR, imx_usb->base + USB_CTRL); - } - else { - temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); - __raw_writel(temp | EPSTAT_STALL, - imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); - - for (i = 0; i < 100; i ++) { - temp = __raw_readl(imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - if (!(temp & EPSTAT_STALL)) - break; - udelay(20); - } - if (i == 100) - D_ERR(imx_usb->dev, "<%s> Non finished stall on %s\n", - __func__, imx_ep->ep.name); - } -} - -static int imx_udc_get_frame(struct usb_gadget *_gadget) -{ - struct imx_udc_struct *imx_usb = container_of(_gadget, - struct imx_udc_struct, gadget); - - return __raw_readl(imx_usb->base + USB_FRAME) & 0x7FF; -} - -static int imx_udc_wakeup(struct usb_gadget *_gadget) -{ - return 0; -} - -/******************************************************************************* - * USB request control functions - ******************************************************************************* - */ - -static void ep_add_request(struct imx_ep_struct *imx_ep, - struct imx_request *req) -{ - if (unlikely(!req)) - return; - - req->in_use = 1; - list_add_tail(&req->queue, &imx_ep->queue); -} - -static void ep_del_request(struct imx_ep_struct *imx_ep, - struct imx_request *req) -{ - if (unlikely(!req)) - return; - - list_del_init(&req->queue); - req->in_use = 0; -} - -static void done(struct imx_ep_struct *imx_ep, - struct imx_request *req, int status) -{ - ep_del_request(imx_ep, req); - - if (likely(req->req.status == -EINPROGRESS)) - req->req.status = status; - else - status = req->req.status; - - if (status && status != -ESHUTDOWN) - D_ERR(imx_ep->imx_usb->dev, - "<%s> complete %s req %p stat %d len %u/%u\n", __func__, - imx_ep->ep.name, &req->req, status, - req->req.actual, req->req.length); - - req->req.complete(&imx_ep->ep, &req->req); -} - -static void nuke(struct imx_ep_struct *imx_ep, int status) -{ - struct imx_request *req; - - while (!list_empty(&imx_ep->queue)) { - req = list_entry(imx_ep->queue.next, struct imx_request, queue); - done(imx_ep, req, status); - } -} - -/******************************************************************************* - * Data tansfer over USB functions - ******************************************************************************* - */ -static int read_packet(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - u8 *buf; - int bytes_ep, bufferspace, count, i; - - bytes_ep = imx_fifo_bcount(imx_ep); - bufferspace = req->req.length - req->req.actual; - - buf = req->req.buf + req->req.actual; - prefetchw(buf); - - if (unlikely(imx_ep_empty(imx_ep))) - count = 0; /* zlp */ - else - count = min(bytes_ep, bufferspace); - - for (i = count; i > 0; i--) - *buf++ = __raw_readb(imx_ep->imx_usb->base - + USB_EP_FDAT0(EP_NO(imx_ep))); - req->req.actual += count; - - return count; -} - -static int write_packet(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - u8 *buf; - int length, count, temp; - - if (unlikely(__raw_readl(imx_ep->imx_usb->base + - USB_EP_STAT(EP_NO(imx_ep))) & EPSTAT_ZLPS)) { - D_TRX(imx_ep->imx_usb->dev, "<%s> zlp still queued in EP %s\n", - __func__, imx_ep->ep.name); - return -1; - } - - buf = req->req.buf + req->req.actual; - prefetch(buf); - - length = min(req->req.length - req->req.actual, (u32)imx_ep->fifosize); - - if (imx_fifo_bcount(imx_ep) + length > imx_ep->fifosize) { - D_TRX(imx_ep->imx_usb->dev, "<%s> packet overfill %s fifo\n", - __func__, imx_ep->ep.name); - return -1; - } - - req->req.actual += length; - count = length; - - if (!count && req->req.zero) { /* zlp */ - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - __raw_writel(temp | EPSTAT_ZLPS, imx_ep->imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - D_TRX(imx_ep->imx_usb->dev, "<%s> zero packet\n", __func__); - return 0; - } - - while (count--) { - if (count == 0) { /* last byte */ - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_FCTRL(EP_NO(imx_ep))); - __raw_writel(temp | FCTRL_WFR, imx_ep->imx_usb->base - + USB_EP_FCTRL(EP_NO(imx_ep))); - } - __raw_writeb(*buf++, - imx_ep->imx_usb->base + USB_EP_FDAT0(EP_NO(imx_ep))); - } - - return length; -} - -static int read_fifo(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - int bytes = 0, - count, - completed = 0; - - while (__raw_readl(imx_ep->imx_usb->base + USB_EP_FSTAT(EP_NO(imx_ep))) - & FSTAT_FR) { - count = read_packet(imx_ep, req); - bytes += count; - - completed = (count != imx_ep->fifosize); - if (completed || req->req.actual == req->req.length) { - completed = 1; - break; - } - } - - if (completed || !req->req.length) { - done(imx_ep, req, 0); - D_REQ(imx_ep->imx_usb->dev, "<%s> %s req<%p> %s\n", - __func__, imx_ep->ep.name, req, - completed ? "completed" : "not completed"); - if (!EP_NO(imx_ep)) - ep0_chg_stat(__func__, imx_ep->imx_usb, EP0_IDLE); - } - - D_TRX(imx_ep->imx_usb->dev, "<%s> bytes read: %d\n", __func__, bytes); - - return completed; -} - -static int write_fifo(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - int bytes = 0, - count, - completed = 0; - - while (!completed) { - count = write_packet(imx_ep, req); - if (count < 0) - break; /* busy */ - bytes += count; - - /* last packet "must be" short (or a zlp) */ - completed = (count != imx_ep->fifosize); - - if (unlikely(completed)) { - done(imx_ep, req, 0); - D_REQ(imx_ep->imx_usb->dev, "<%s> %s req<%p> %s\n", - __func__, imx_ep->ep.name, req, - completed ? "completed" : "not completed"); - if (!EP_NO(imx_ep)) - ep0_chg_stat(__func__, - imx_ep->imx_usb, EP0_IDLE); - } - } - - D_TRX(imx_ep->imx_usb->dev, "<%s> bytes sent: %d\n", __func__, bytes); - - return completed; -} - -/******************************************************************************* - * Endpoint handlers - ******************************************************************************* - */ -static int handle_ep(struct imx_ep_struct *imx_ep) -{ - struct imx_request *req; - int completed = 0; - - do { - if (!list_empty(&imx_ep->queue)) - req = list_entry(imx_ep->queue.next, - struct imx_request, queue); - else { - D_REQ(imx_ep->imx_usb->dev, "<%s> no request on %s\n", - __func__, imx_ep->ep.name); - return 0; - } - - if (EP_DIR(imx_ep)) /* to host */ - completed = write_fifo(imx_ep, req); - else /* to device */ - completed = read_fifo(imx_ep, req); - - dump_ep_stat(__func__, imx_ep); - - } while (completed); - - return 0; -} - -static int handle_ep0(struct imx_ep_struct *imx_ep) -{ - struct imx_request *req = NULL; - int ret = 0; - - if (!list_empty(&imx_ep->queue)) { - req = list_entry(imx_ep->queue.next, struct imx_request, queue); - - switch (imx_ep->imx_usb->ep0state) { - - case EP0_IN_DATA_PHASE: /* GET_DESCRIPTOR */ - write_fifo(imx_ep, req); - break; - case EP0_OUT_DATA_PHASE: /* SET_DESCRIPTOR */ - read_fifo(imx_ep, req); - break; - default: - D_EP0(imx_ep->imx_usb->dev, - "<%s> ep0 i/o, odd state %d\n", - __func__, imx_ep->imx_usb->ep0state); - ep_del_request(imx_ep, req); - ret = -EL2HLT; - break; - } - } - - else - D_ERR(imx_ep->imx_usb->dev, "<%s> no request on %s\n", - __func__, imx_ep->ep.name); - - return ret; -} - -static void handle_ep0_devreq(struct imx_udc_struct *imx_usb) -{ - struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[0]; - union { - struct usb_ctrlrequest r; - u8 raw[8]; - u32 word[2]; - } u; - int temp, i; - - nuke(imx_ep, -EPROTO); - - /* read SETUP packet */ - for (i = 0; i < 2; i++) { - if (imx_ep_empty(imx_ep)) { - D_ERR(imx_usb->dev, - "<%s> no setup packet received\n", __func__); - goto stall; - } - u.word[i] = __raw_readl(imx_usb->base - + USB_EP_FDAT(EP_NO(imx_ep))); - } - - temp = imx_ep_empty(imx_ep); - while (!imx_ep_empty(imx_ep)) { - i = __raw_readl(imx_usb->base + USB_EP_FDAT(EP_NO(imx_ep))); - D_ERR(imx_usb->dev, - "<%s> wrong to have extra bytes for setup : 0x%08x\n", - __func__, i); - } - if (!temp) - goto stall; - - le16_to_cpus(&u.r.wValue); - le16_to_cpus(&u.r.wIndex); - le16_to_cpus(&u.r.wLength); - - D_REQ(imx_usb->dev, "<%s> SETUP %02x.%02x v%04x i%04x l%04x\n", - __func__, u.r.bRequestType, u.r.bRequest, - u.r.wValue, u.r.wIndex, u.r.wLength); - - if (imx_usb->set_config) { - /* NACK the host by using CMDOVER */ - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_CMDOVER, imx_usb->base + USB_CTRL); - - D_ERR(imx_usb->dev, - "<%s> set config req is pending, NACK the host\n", - __func__); - return; - } - - if (u.r.bRequestType & USB_DIR_IN) - ep0_chg_stat(__func__, imx_usb, EP0_IN_DATA_PHASE); - else - ep0_chg_stat(__func__, imx_usb, EP0_OUT_DATA_PHASE); - - i = imx_usb->driver->setup(&imx_usb->gadget, &u.r); - if (i < 0) { - D_ERR(imx_usb->dev, "<%s> device setup error %d\n", - __func__, i); - goto stall; - } - - return; -stall: - D_ERR(imx_usb->dev, "<%s> protocol STALL\n", __func__); - imx_ep_stall(imx_ep); - ep0_chg_stat(__func__, imx_usb, EP0_STALL); - return; -} - -/******************************************************************************* - * USB gadget callback functions - ******************************************************************************* - */ - -static int imx_ep_enable(struct usb_ep *usb_ep, - const struct usb_endpoint_descriptor *desc) -{ - struct imx_ep_struct *imx_ep = container_of(usb_ep, - struct imx_ep_struct, ep); - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - unsigned long flags; - - if (!usb_ep - || !desc - || !EP_NO(imx_ep) - || desc->bDescriptorType != USB_DT_ENDPOINT - || imx_ep->bEndpointAddress != desc->bEndpointAddress) { - D_ERR(imx_usb->dev, - "<%s> bad ep or descriptor\n", __func__); - return -EINVAL; - } - - if (imx_ep->bmAttributes != desc->bmAttributes) { - D_ERR(imx_usb->dev, - "<%s> %s type mismatch\n", __func__, usb_ep->name); - return -EINVAL; - } - - if (imx_ep->fifosize < usb_endpoint_maxp(desc)) { - D_ERR(imx_usb->dev, - "<%s> bad %s maxpacket\n", __func__, usb_ep->name); - return -ERANGE; - } - - if (!imx_usb->driver || imx_usb->gadget.speed == USB_SPEED_UNKNOWN) { - D_ERR(imx_usb->dev, "<%s> bogus device state\n", __func__); - return -ESHUTDOWN; - } - - local_irq_save(flags); - - imx_ep->stopped = 0; - imx_flush(imx_ep); - imx_ep_irq_enable(imx_ep); - - local_irq_restore(flags); - - D_EPX(imx_usb->dev, "<%s> ENABLED %s\n", __func__, usb_ep->name); - return 0; -} - -static int imx_ep_disable(struct usb_ep *usb_ep) -{ - struct imx_ep_struct *imx_ep = container_of(usb_ep, - struct imx_ep_struct, ep); - unsigned long flags; - - if (!usb_ep || !EP_NO(imx_ep) || !list_empty(&imx_ep->queue)) { - D_ERR(imx_ep->imx_usb->dev, "<%s> %s can not be disabled\n", - __func__, usb_ep ? imx_ep->ep.name : NULL); - return -EINVAL; - } - - local_irq_save(flags); - - imx_ep->stopped = 1; - nuke(imx_ep, -ESHUTDOWN); - imx_flush(imx_ep); - imx_ep_irq_disable(imx_ep); - - local_irq_restore(flags); - - D_EPX(imx_ep->imx_usb->dev, - "<%s> DISABLED %s\n", __func__, usb_ep->name); - return 0; -} - -static struct usb_request *imx_ep_alloc_request - (struct usb_ep *usb_ep, gfp_t gfp_flags) -{ - struct imx_request *req; - - if (!usb_ep) - return NULL; - - req = kzalloc(sizeof *req, gfp_flags); - if (!req) - return NULL; - - INIT_LIST_HEAD(&req->queue); - req->in_use = 0; - - return &req->req; -} - -static void imx_ep_free_request - (struct usb_ep *usb_ep, struct usb_request *usb_req) -{ - struct imx_request *req; - - req = container_of(usb_req, struct imx_request, req); - WARN_ON(!list_empty(&req->queue)); - kfree(req); -} - -static int imx_ep_queue - (struct usb_ep *usb_ep, struct usb_request *usb_req, gfp_t gfp_flags) -{ - struct imx_ep_struct *imx_ep; - struct imx_udc_struct *imx_usb; - struct imx_request *req; - unsigned long flags; - int ret = 0; - - imx_ep = container_of(usb_ep, struct imx_ep_struct, ep); - imx_usb = imx_ep->imx_usb; - req = container_of(usb_req, struct imx_request, req); - - /* - Special care on IMX udc. - Ignore enqueue when after set configuration from the - host. This assume all gadget drivers reply set - configuration with the next ep0 req enqueue. - */ - if (imx_usb->set_config && !EP_NO(imx_ep)) { - imx_usb->set_config = 0; - D_ERR(imx_usb->dev, - "<%s> gadget reply set config\n", __func__); - return 0; - } - - if (unlikely(!usb_req || !req || !usb_req->complete || !usb_req->buf)) { - D_ERR(imx_usb->dev, "<%s> bad params\n", __func__); - return -EINVAL; - } - - if (unlikely(!usb_ep || !imx_ep)) { - D_ERR(imx_usb->dev, "<%s> bad ep\n", __func__); - return -EINVAL; - } - - if (!imx_usb->driver || imx_usb->gadget.speed == USB_SPEED_UNKNOWN) { - D_ERR(imx_usb->dev, "<%s> bogus device state\n", __func__); - return -ESHUTDOWN; - } - - /* Debug */ - D_REQ(imx_usb->dev, "<%s> ep%d %s request for [%d] bytes\n", - __func__, EP_NO(imx_ep), - ((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state - == EP0_IN_DATA_PHASE) - || (EP_NO(imx_ep) && EP_DIR(imx_ep))) - ? "IN" : "OUT", usb_req->length); - dump_req(__func__, imx_ep, usb_req); - - if (imx_ep->stopped) { - usb_req->status = -ESHUTDOWN; - return -ESHUTDOWN; - } - - if (req->in_use) { - D_ERR(imx_usb->dev, - "<%s> refusing to queue req %p (already queued)\n", - __func__, req); - return 0; - } - - local_irq_save(flags); - - usb_req->status = -EINPROGRESS; - usb_req->actual = 0; - - ep_add_request(imx_ep, req); - - if (!EP_NO(imx_ep)) - ret = handle_ep0(imx_ep); - else - ret = handle_ep(imx_ep); - - local_irq_restore(flags); - return ret; -} - -static int imx_ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req) -{ - - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - struct imx_request *req; - unsigned long flags; - - if (unlikely(!usb_ep || !EP_NO(imx_ep))) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - return -EINVAL; - } - - local_irq_save(flags); - - /* make sure it's actually queued on this endpoint */ - list_for_each_entry(req, &imx_ep->queue, queue) { - if (&req->req == usb_req) - break; - } - if (&req->req != usb_req) { - local_irq_restore(flags); - return -EINVAL; - } - - done(imx_ep, req, -ECONNRESET); - - local_irq_restore(flags); - return 0; -} - -static int imx_ep_set_halt(struct usb_ep *usb_ep, int value) -{ - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - unsigned long flags; - - if (unlikely(!usb_ep || !EP_NO(imx_ep))) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - return -EINVAL; - } - - local_irq_save(flags); - - if ((imx_ep->bEndpointAddress & USB_DIR_IN) - && !list_empty(&imx_ep->queue)) { - local_irq_restore(flags); - return -EAGAIN; - } - - imx_ep_stall(imx_ep); - - local_irq_restore(flags); - - D_EPX(imx_ep->imx_usb->dev, "<%s> %s halt\n", __func__, usb_ep->name); - return 0; -} - -static int imx_ep_fifo_status(struct usb_ep *usb_ep) -{ - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - - if (!usb_ep) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - return -ENODEV; - } - - if (imx_ep->imx_usb->gadget.speed == USB_SPEED_UNKNOWN) - return 0; - else - return imx_fifo_bcount(imx_ep); -} - -static void imx_ep_fifo_flush(struct usb_ep *usb_ep) -{ - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - unsigned long flags; - - local_irq_save(flags); - - if (!usb_ep || !EP_NO(imx_ep) || !list_empty(&imx_ep->queue)) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - local_irq_restore(flags); - return; - } - - /* toggle and halt bits stay unchanged */ - imx_flush(imx_ep); - - local_irq_restore(flags); -} - -static struct usb_ep_ops imx_ep_ops = { - .enable = imx_ep_enable, - .disable = imx_ep_disable, - - .alloc_request = imx_ep_alloc_request, - .free_request = imx_ep_free_request, - - .queue = imx_ep_queue, - .dequeue = imx_ep_dequeue, - - .set_halt = imx_ep_set_halt, - .fifo_status = imx_ep_fifo_status, - .fifo_flush = imx_ep_fifo_flush, -}; - -/******************************************************************************* - * USB endpoint control functions - ******************************************************************************* - */ - -void ep0_chg_stat(const char *label, - struct imx_udc_struct *imx_usb, enum ep0_state stat) -{ - D_EP0(imx_usb->dev, "<%s> from %15s to %15s\n", - label, state_name[imx_usb->ep0state], state_name[stat]); - - if (imx_usb->ep0state == stat) - return; - - imx_usb->ep0state = stat; -} - -static void usb_init_data(struct imx_udc_struct *imx_usb) -{ - struct imx_ep_struct *imx_ep; - u8 i; - - /* device/ep0 records init */ - INIT_LIST_HEAD(&imx_usb->gadget.ep_list); - INIT_LIST_HEAD(&imx_usb->gadget.ep0->ep_list); - ep0_chg_stat(__func__, imx_usb, EP0_IDLE); - - /* basic endpoint records init */ - for (i = 0; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - - if (i) { - list_add_tail(&imx_ep->ep.ep_list, - &imx_usb->gadget.ep_list); - imx_ep->stopped = 1; - } else - imx_ep->stopped = 0; - - INIT_LIST_HEAD(&imx_ep->queue); - } -} - -static void udc_stop_activity(struct imx_udc_struct *imx_usb, - struct usb_gadget_driver *driver) -{ - struct imx_ep_struct *imx_ep; - int i; - - if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN) - driver = NULL; - - /* prevent new request submissions, kill any outstanding requests */ - for (i = 1; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - imx_flush(imx_ep); - imx_ep->stopped = 1; - imx_ep_irq_disable(imx_ep); - nuke(imx_ep, -ESHUTDOWN); - } - - imx_usb->cfg = 0; - imx_usb->intf = 0; - imx_usb->alt = 0; - - if (driver) - driver->disconnect(&imx_usb->gadget); -} - -/******************************************************************************* - * Interrupt handlers - ******************************************************************************* - */ - -/* - * Called when timer expires. - * Timer is started when CFG_CHG is received. - */ -static void handle_config(unsigned long data) -{ - struct imx_udc_struct *imx_usb = (void *)data; - struct usb_ctrlrequest u; - int temp, cfg, intf, alt; - - local_irq_disable(); - - temp = __raw_readl(imx_usb->base + USB_STAT); - cfg = (temp & STAT_CFG) >> 5; - intf = (temp & STAT_INTF) >> 3; - alt = temp & STAT_ALTSET; - - D_REQ(imx_usb->dev, - "<%s> orig config C=%d, I=%d, A=%d / " - "req config C=%d, I=%d, A=%d\n", - __func__, imx_usb->cfg, imx_usb->intf, imx_usb->alt, - cfg, intf, alt); - - if (cfg == 1 || cfg == 2) { - - if (imx_usb->cfg != cfg) { - u.bRequest = USB_REQ_SET_CONFIGURATION; - u.bRequestType = USB_DIR_OUT | - USB_TYPE_STANDARD | - USB_RECIP_DEVICE; - u.wValue = cfg; - u.wIndex = 0; - u.wLength = 0; - imx_usb->cfg = cfg; - imx_usb->driver->setup(&imx_usb->gadget, &u); - - } - if (imx_usb->intf != intf || imx_usb->alt != alt) { - u.bRequest = USB_REQ_SET_INTERFACE; - u.bRequestType = USB_DIR_OUT | - USB_TYPE_STANDARD | - USB_RECIP_INTERFACE; - u.wValue = alt; - u.wIndex = intf; - u.wLength = 0; - imx_usb->intf = intf; - imx_usb->alt = alt; - imx_usb->driver->setup(&imx_usb->gadget, &u); - } - } - - imx_usb->set_config = 0; - - local_irq_enable(); -} - -static irqreturn_t imx_udc_irq(int irq, void *dev) -{ - struct imx_udc_struct *imx_usb = dev; - int intr = __raw_readl(imx_usb->base + USB_INTR); - int temp; - - if (intr & (INTR_WAKEUP | INTR_SUSPEND | INTR_RESUME | INTR_RESET_START - | INTR_RESET_STOP | INTR_CFG_CHG)) { - dump_intr(__func__, intr, imx_usb->dev); - dump_usb_stat(__func__, imx_usb); - } - - if (!imx_usb->driver) - goto end_irq; - - if (intr & INTR_SOF) { - /* Copy from Freescale BSP. - We must enable SOF intr and set CMDOVER. - Datasheet don't specifiy this action, but it - is done in Freescale BSP, so just copy it. - */ - if (imx_usb->ep0state == EP0_IDLE) { - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_CMDOVER, - imx_usb->base + USB_CTRL); - } - } - - if (intr & INTR_CFG_CHG) { - /* A workaround of serious IMX UDC bug. - Handling of CFG_CHG should be delayed for some time, because - IMX does not NACK the host when CFG_CHG interrupt is pending. - There is no time to handle current CFG_CHG - if next CFG_CHG or SETUP packed is send immediately. - We have to clear CFG_CHG, start the timer and - NACK the host by setting CTRL_CMDOVER - if it sends any SETUP packet. - When timer expires, handler is called to handle configuration - changes. While CFG_CHG is not handled (set_config=1), - we must NACK the host to every SETUP packed. - This delay prevents from going out of sync with host. - */ - __raw_writel(INTR_CFG_CHG, imx_usb->base + USB_INTR); - imx_usb->set_config = 1; - mod_timer(&imx_usb->timer, jiffies + 5); - goto end_irq; - } - - if (intr & INTR_WAKEUP) { - if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN - && imx_usb->driver && imx_usb->driver->resume) - imx_usb->driver->resume(&imx_usb->gadget); - imx_usb->set_config = 0; - del_timer(&imx_usb->timer); - imx_usb->gadget.speed = USB_SPEED_FULL; - } - - if (intr & INTR_SUSPEND) { - if (imx_usb->gadget.speed != USB_SPEED_UNKNOWN - && imx_usb->driver && imx_usb->driver->suspend) - imx_usb->driver->suspend(&imx_usb->gadget); - imx_usb->set_config = 0; - del_timer(&imx_usb->timer); - imx_usb->gadget.speed = USB_SPEED_UNKNOWN; - } - - if (intr & INTR_RESET_START) { - __raw_writel(intr, imx_usb->base + USB_INTR); - udc_stop_activity(imx_usb, imx_usb->driver); - imx_usb->set_config = 0; - del_timer(&imx_usb->timer); - imx_usb->gadget.speed = USB_SPEED_UNKNOWN; - } - - if (intr & INTR_RESET_STOP) - imx_usb->gadget.speed = USB_SPEED_FULL; - -end_irq: - __raw_writel(intr, imx_usb->base + USB_INTR); - return IRQ_HANDLED; -} - -static irqreturn_t imx_udc_ctrl_irq(int irq, void *dev) -{ - struct imx_udc_struct *imx_usb = dev; - struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[0]; - int intr = __raw_readl(imx_usb->base + USB_EP_INTR(0)); - - dump_ep_intr(__func__, 0, intr, imx_usb->dev); - - if (!imx_usb->driver) { - __raw_writel(intr, imx_usb->base + USB_EP_INTR(0)); - return IRQ_HANDLED; - } - - /* DEVREQ has highest priority */ - if (intr & (EPINTR_DEVREQ | EPINTR_MDEVREQ)) - handle_ep0_devreq(imx_usb); - /* Seem i.MX is missing EOF interrupt sometimes. - * Therefore we don't monitor EOF. - * We call handle_ep0() only if a request is queued for ep0. - */ - else if (!list_empty(&imx_ep->queue)) - handle_ep0(imx_ep); - - __raw_writel(intr, imx_usb->base + USB_EP_INTR(0)); - - return IRQ_HANDLED; -} - -#ifndef MX1_INT_USBD0 -#define MX1_INT_USBD0 MX1_USBD_INT0 -#endif - -static irqreturn_t imx_udc_bulk_irq(int irq, void *dev) -{ - struct imx_udc_struct *imx_usb = dev; - struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[irq - MX1_INT_USBD0]; - int intr = __raw_readl(imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); - - dump_ep_intr(__func__, irq - MX1_INT_USBD0, intr, imx_usb->dev); - - if (!imx_usb->driver) { - __raw_writel(intr, imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); - return IRQ_HANDLED; - } - - handle_ep(imx_ep); - - __raw_writel(intr, imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); - - return IRQ_HANDLED; -} - -irq_handler_t intr_handler(int i) -{ - switch (i) { - case 0: - return imx_udc_ctrl_irq; - case 1: - case 2: - case 3: - case 4: - case 5: - return imx_udc_bulk_irq; - default: - return imx_udc_irq; - } -} - -/******************************************************************************* - * Static defined IMX UDC structure - ******************************************************************************* - */ - -static int imx_udc_start(struct usb_gadget *gadget, - struct usb_gadget_driver *driver); -static int imx_udc_stop(struct usb_gadget *gadget, - struct usb_gadget_driver *driver); -static const struct usb_gadget_ops imx_udc_ops = { - .get_frame = imx_udc_get_frame, - .wakeup = imx_udc_wakeup, - .udc_start = imx_udc_start, - .udc_stop = imx_udc_stop, -}; - -static struct imx_udc_struct controller = { - .gadget = { - .ops = &imx_udc_ops, - .ep0 = &controller.imx_ep[0].ep, - .name = driver_name, - .dev = { - .init_name = "gadget", - }, - }, - - .imx_ep[0] = { - .ep = { - .name = ep0name, - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = 0, - .bmAttributes = USB_ENDPOINT_XFER_CONTROL, - }, - .imx_ep[1] = { - .ep = { - .name = "ep1in-bulk", - .ops = &imx_ep_ops, - .maxpacket = 64, - }, - .imx_usb = &controller, - .fifosize = 64, - .bEndpointAddress = USB_DIR_IN | 1, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - }, - .imx_ep[2] = { - .ep = { - .name = "ep2out-bulk", - .ops = &imx_ep_ops, - .maxpacket = 64, - }, - .imx_usb = &controller, - .fifosize = 64, - .bEndpointAddress = USB_DIR_OUT | 2, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - }, - .imx_ep[3] = { - .ep = { - .name = "ep3out-bulk", - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = USB_DIR_OUT | 3, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - }, - .imx_ep[4] = { - .ep = { - .name = "ep4in-int", - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = USB_DIR_IN | 4, - .bmAttributes = USB_ENDPOINT_XFER_INT, - }, - .imx_ep[5] = { - .ep = { - .name = "ep5out-int", - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = USB_DIR_OUT | 5, - .bmAttributes = USB_ENDPOINT_XFER_INT, - }, -}; - -/******************************************************************************* - * USB gadget driver functions - ******************************************************************************* - */ -static int imx_udc_start(struct usb_gadget *gadget, - struct usb_gadget_driver *driver) -{ - struct imx_udc_struct *imx_usb; - - imx_usb = container_of(gadget, struct imx_udc_struct, gadget); - /* first hook up the driver ... */ - imx_usb->driver = driver; - - D_INI(imx_usb->dev, "<%s> registered gadget driver '%s'\n", - __func__, driver->driver.name); - - imx_udc_enable(imx_usb); - - return 0; -} - -static int imx_udc_stop(struct usb_gadget *gadget, - struct usb_gadget_driver *driver) -{ - struct imx_udc_struct *imx_usb = container_of(gadget, - struct imx_udc_struct, gadget); - - udc_stop_activity(imx_usb, driver); - imx_udc_disable(imx_usb); - del_timer(&imx_usb->timer); - - imx_usb->driver = NULL; - - D_INI(imx_usb->dev, "<%s> unregistered gadget driver '%s'\n", - __func__, driver->driver.name); - - return 0; -} - -/******************************************************************************* - * Module functions - ******************************************************************************* - */ - -static int __init imx_udc_probe(struct platform_device *pdev) -{ - struct imx_udc_struct *imx_usb = &controller; - struct resource *res; - struct imxusb_platform_data *pdata; - struct clk *clk; - void __iomem *base; - int ret = 0; - int i; - resource_size_t res_size; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "can't get device resources\n"); - return -ENODEV; - } - - pdata = pdev->dev.platform_data; - if (!pdata) { - dev_err(&pdev->dev, "driver needs platform data\n"); - return -ENODEV; - } - - res_size = resource_size(res); - if (!request_mem_region(res->start, res_size, res->name)) { - dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n", - res_size, res->start); - return -ENOMEM; - } - - if (pdata->init) { - ret = pdata->init(&pdev->dev); - if (ret) - goto fail0; - } - - base = ioremap(res->start, res_size); - if (!base) { - dev_err(&pdev->dev, "ioremap failed\n"); - ret = -EIO; - goto fail1; - } - - clk = clk_get(NULL, "usbd_clk"); - if (IS_ERR(clk)) { - ret = PTR_ERR(clk); - dev_err(&pdev->dev, "can't get USB clock\n"); - goto fail2; - } - clk_prepare_enable(clk); - - if (clk_get_rate(clk) != 48000000) { - D_INI(&pdev->dev, - "Bad USB clock (%d Hz), changing to 48000000 Hz\n", - (int)clk_get_rate(clk)); - if (clk_set_rate(clk, 48000000)) { - dev_err(&pdev->dev, - "Unable to set correct USB clock (48MHz)\n"); - ret = -EIO; - goto fail3; - } - } - - for (i = 0; i < IMX_USB_NB_EP + 1; i++) { - imx_usb->usbd_int[i] = platform_get_irq(pdev, i); - if (imx_usb->usbd_int[i] < 0) { - dev_err(&pdev->dev, "can't get irq number\n"); - ret = -ENODEV; - goto fail3; - } - } - - for (i = 0; i < IMX_USB_NB_EP + 1; i++) { - ret = request_irq(imx_usb->usbd_int[i], intr_handler(i), - 0, driver_name, imx_usb); - if (ret) { - dev_err(&pdev->dev, "can't get irq %i, err %d\n", - imx_usb->usbd_int[i], ret); - for (--i; i >= 0; i--) - free_irq(imx_usb->usbd_int[i], imx_usb); - goto fail3; - } - } - - imx_usb->res = res; - imx_usb->base = base; - imx_usb->clk = clk; - imx_usb->dev = &pdev->dev; - - platform_set_drvdata(pdev, imx_usb); - - usb_init_data(imx_usb); - imx_udc_init(imx_usb); - - init_timer(&imx_usb->timer); - imx_usb->timer.function = handle_config; - imx_usb->timer.data = (unsigned long)imx_usb; - - ret = usb_add_gadget_udc(&pdev->dev, &imx_usb->gadget); - if (ret) - goto fail4; - - return 0; -fail4: - for (i = 0; i < IMX_USB_NB_EP + 1; i++) - free_irq(imx_usb->usbd_int[i], imx_usb); -fail3: - clk_put(clk); - clk_disable_unprepare(clk); -fail2: - iounmap(base); -fail1: - if (pdata->exit) - pdata->exit(&pdev->dev); -fail0: - release_mem_region(res->start, res_size); - return ret; -} - -static int __exit imx_udc_remove(struct platform_device *pdev) -{ - struct imx_udc_struct *imx_usb = platform_get_drvdata(pdev); - struct imxusb_platform_data *pdata = pdev->dev.platform_data; - int i; - - usb_del_gadget_udc(&imx_usb->gadget); - imx_udc_disable(imx_usb); - del_timer(&imx_usb->timer); - - for (i = 0; i < IMX_USB_NB_EP + 1; i++) - free_irq(imx_usb->usbd_int[i], imx_usb); - - clk_put(imx_usb->clk); - clk_disable_unprepare(imx_usb->clk); - iounmap(imx_usb->base); - - release_mem_region(imx_usb->res->start, resource_size(imx_usb->res)); - - if (pdata->exit) - pdata->exit(&pdev->dev); - - return 0; -} - -/*----------------------------------------------------------------------------*/ - -#ifdef CONFIG_PM -#define imx_udc_suspend NULL -#define imx_udc_resume NULL -#else -#define imx_udc_suspend NULL -#define imx_udc_resume NULL -#endif - -/*----------------------------------------------------------------------------*/ - -static struct platform_driver udc_driver = { - .driver = { - .name = driver_name, - .owner = THIS_MODULE, - }, - .remove = __exit_p(imx_udc_remove), - .suspend = imx_udc_suspend, - .resume = imx_udc_resume, -}; - -module_platform_driver_probe(udc_driver, imx_udc_probe); - -MODULE_DESCRIPTION("IMX USB Device Controller driver"); -MODULE_AUTHOR("Darius Augulis <augulis.darius@gmail.com>"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:imx_udc"); diff --git a/drivers/usb/gadget/imx_udc.h b/drivers/usb/gadget/imx_udc.h deleted file mode 100644 index d118fb777840..000000000000 --- a/drivers/usb/gadget/imx_udc.h +++ /dev/null @@ -1,351 +0,0 @@ -/* - * Copyright (C) 2005 Mike Lee(eemike@gmail.com) - * - * This udc driver is now under testing and code is based on pxa2xx_udc.h - * Please use it with your own risk! - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#ifndef __LINUX_USB_GADGET_IMX_H -#define __LINUX_USB_GADGET_IMX_H - -#include <linux/types.h> - -/* Helper macros */ -#define EP_NO(ep) ((ep->bEndpointAddress) & ~USB_DIR_IN) /* IN:1, OUT:0 */ -#define EP_DIR(ep) ((ep->bEndpointAddress) & USB_DIR_IN ? 1 : 0) -#define IMX_USB_NB_EP 6 - -/* Driver structures */ -struct imx_request { - struct usb_request req; - struct list_head queue; - unsigned int in_use; -}; - -enum ep0_state { - EP0_IDLE, - EP0_IN_DATA_PHASE, - EP0_OUT_DATA_PHASE, - EP0_CONFIG, - EP0_STALL, -}; - -struct imx_ep_struct { - struct usb_ep ep; - struct imx_udc_struct *imx_usb; - struct list_head queue; - unsigned char stopped; - unsigned char fifosize; - unsigned char bEndpointAddress; - unsigned char bmAttributes; -}; - -struct imx_udc_struct { - struct usb_gadget gadget; - struct usb_gadget_driver *driver; - struct device *dev; - struct imx_ep_struct imx_ep[IMX_USB_NB_EP]; - struct clk *clk; - struct timer_list timer; - enum ep0_state ep0state; - struct resource *res; - void __iomem *base; - unsigned char set_config; - int cfg, - intf, - alt, - usbd_int[7]; -}; - -/* USB registers */ -#define USB_FRAME (0x00) /* USB frame */ -#define USB_SPEC (0x04) /* USB Spec */ -#define USB_STAT (0x08) /* USB Status */ -#define USB_CTRL (0x0C) /* USB Control */ -#define USB_DADR (0x10) /* USB Desc RAM addr */ -#define USB_DDAT (0x14) /* USB Desc RAM/EP buffer data */ -#define USB_INTR (0x18) /* USB interrupt */ -#define USB_MASK (0x1C) /* USB Mask */ -#define USB_ENAB (0x24) /* USB Enable */ -#define USB_EP_STAT(x) (0x30 + (x*0x30)) /* USB status/control */ -#define USB_EP_INTR(x) (0x34 + (x*0x30)) /* USB interrupt */ -#define USB_EP_MASK(x) (0x38 + (x*0x30)) /* USB mask */ -#define USB_EP_FDAT(x) (0x3C + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT0(x) (0x3C + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT1(x) (0x3D + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT2(x) (0x3E + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT3(x) (0x3F + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FSTAT(x) (0x40 + (x*0x30)) /* USB FIFO status */ -#define USB_EP_FCTRL(x) (0x44 + (x*0x30)) /* USB FIFO control */ -#define USB_EP_LRFP(x) (0x48 + (x*0x30)) /* USB last rd f. pointer */ -#define USB_EP_LWFP(x) (0x4C + (x*0x30)) /* USB last wr f. pointer */ -#define USB_EP_FALRM(x) (0x50 + (x*0x30)) /* USB FIFO alarm */ -#define USB_EP_FRDP(x) (0x54 + (x*0x30)) /* USB FIFO read pointer */ -#define USB_EP_FWRP(x) (0x58 + (x*0x30)) /* USB FIFO write pointer */ -/* USB Control Register Bit Fields.*/ -#define CTRL_CMDOVER (1<<6) /* UDC status */ -#define CTRL_CMDERROR (1<<5) /* UDC status */ -#define CTRL_FE_ENA (1<<3) /* Enable Font End logic */ -#define CTRL_UDC_RST (1<<2) /* UDC reset */ -#define CTRL_AFE_ENA (1<<1) /* Analog Font end enable */ -#define CTRL_RESUME (1<<0) /* UDC resume */ -/* USB Status Register Bit Fields.*/ -#define STAT_RST (1<<8) -#define STAT_SUSP (1<<7) -#define STAT_CFG (3<<5) -#define STAT_INTF (3<<3) -#define STAT_ALTSET (7<<0) -/* USB Interrupt Status/Mask Registers Bit fields */ -#define INTR_WAKEUP (1<<31) /* Wake up Interrupt */ -#define INTR_MSOF (1<<7) /* Missed Start of Frame */ -#define INTR_SOF (1<<6) /* Start of Frame */ -#define INTR_RESET_STOP (1<<5) /* Reset Signaling stop */ -#define INTR_RESET_START (1<<4) /* Reset Signaling start */ -#define INTR_RESUME (1<<3) /* Suspend to resume */ -#define INTR_SUSPEND (1<<2) /* Active to suspend */ -#define INTR_FRAME_MATCH (1<<1) /* Frame matched */ -#define INTR_CFG_CHG (1<<0) /* Configuration change occurred */ -/* USB Enable Register Bit Fields.*/ -#define ENAB_RST (1<<31) /* Reset USB modules */ -#define ENAB_ENAB (1<<30) /* Enable USB modules*/ -#define ENAB_SUSPEND (1<<29) /* Suspend USB modules */ -#define ENAB_ENDIAN (1<<28) /* Endian of USB modules */ -#define ENAB_PWRMD (1<<0) /* Power mode of USB modules */ -/* USB Descriptor Ram Address Register bit fields */ -#define DADR_CFG (1<<31) /* Configuration */ -#define DADR_BSY (1<<30) /* Busy status */ -#define DADR_DADR (0x1FF) /* Descriptor Ram Address */ -/* USB Descriptor RAM/Endpoint Buffer Data Register bit fields */ -#define DDAT_DDAT (0xFF) /* Descriptor Endpoint Buffer */ -/* USB Endpoint Status Register bit fields */ -#define EPSTAT_BCOUNT (0x7F<<16) /* Endpoint FIFO byte count */ -#define EPSTAT_SIP (1<<8) /* Endpoint setup in progress */ -#define EPSTAT_DIR (1<<7) /* Endpoint transfer direction */ -#define EPSTAT_MAX (3<<5) /* Endpoint Max packet size */ -#define EPSTAT_TYP (3<<3) /* Endpoint type */ -#define EPSTAT_ZLPS (1<<2) /* Send zero length packet */ -#define EPSTAT_FLUSH (1<<1) /* Endpoint FIFO Flush */ -#define EPSTAT_STALL (1<<0) /* Force stall */ -/* USB Endpoint FIFO Status Register bit fields */ -#define FSTAT_FRAME_STAT (0xF<<24) /* Frame status bit [0-3] */ -#define FSTAT_ERR (1<<22) /* FIFO error */ -#define FSTAT_UF (1<<21) /* FIFO underflow */ -#define FSTAT_OF (1<<20) /* FIFO overflow */ -#define FSTAT_FR (1<<19) /* FIFO frame ready */ -#define FSTAT_FULL (1<<18) /* FIFO full */ -#define FSTAT_ALRM (1<<17) /* FIFO alarm */ -#define FSTAT_EMPTY (1<<16) /* FIFO empty */ -/* USB Endpoint FIFO Control Register bit fields */ -#define FCTRL_WFR (1<<29) /* Write frame end */ -/* USB Endpoint Interrupt Status Regsiter bit fields */ -#define EPINTR_FIFO_FULL (1<<8) /* fifo full */ -#define EPINTR_FIFO_EMPTY (1<<7) /* fifo empty */ -#define EPINTR_FIFO_ERROR (1<<6) /* fifo error */ -#define EPINTR_FIFO_HIGH (1<<5) /* fifo high */ -#define EPINTR_FIFO_LOW (1<<4) /* fifo low */ -#define EPINTR_MDEVREQ (1<<3) /* multi Device request */ -#define EPINTR_EOT (1<<2) /* fifo end of transfer */ -#define EPINTR_DEVREQ (1<<1) /* Device request */ -#define EPINTR_EOF (1<<0) /* fifo end of frame */ - -/* Debug macros */ -#ifdef DEBUG - -/* #define DEBUG_REQ */ -/* #define DEBUG_TRX */ -/* #define DEBUG_INIT */ -/* #define DEBUG_EP0 */ -/* #define DEBUG_EPX */ -/* #define DEBUG_IRQ */ -/* #define DEBUG_EPIRQ */ -/* #define DEBUG_DUMP */ -/* #define DEBUG_ERR */ - -#ifdef DEBUG_REQ - #define D_REQ(dev, args...) dev_dbg(dev, ## args) -#else - #define D_REQ(dev, args...) do {} while (0) -#endif /* DEBUG_REQ */ - -#ifdef DEBUG_TRX - #define D_TRX(dev, args...) dev_dbg(dev, ## args) -#else - #define D_TRX(dev, args...) do {} while (0) -#endif /* DEBUG_TRX */ - -#ifdef DEBUG_INIT - #define D_INI(dev, args...) dev_dbg(dev, ## args) -#else - #define D_INI(dev, args...) do {} while (0) -#endif /* DEBUG_INIT */ - -#ifdef DEBUG_EP0 - static const char *state_name[] = { - "EP0_IDLE", - "EP0_IN_DATA_PHASE", - "EP0_OUT_DATA_PHASE", - "EP0_CONFIG", - "EP0_STALL" - }; - #define D_EP0(dev, args...) dev_dbg(dev, ## args) -#else - #define D_EP0(dev, args...) do {} while (0) -#endif /* DEBUG_EP0 */ - -#ifdef DEBUG_EPX - #define D_EPX(dev, args...) dev_dbg(dev, ## args) -#else - #define D_EPX(dev, args...) do {} while (0) -#endif /* DEBUG_EP0 */ - -#ifdef DEBUG_IRQ - static void dump_intr(const char *label, int irqreg, struct device *dev) - { - dev_dbg(dev, "<%s> USB_INTR=[%s%s%s%s%s%s%s%s%s]\n", label, - (irqreg & INTR_WAKEUP) ? " wake" : "", - (irqreg & INTR_MSOF) ? " msof" : "", - (irqreg & INTR_SOF) ? " sof" : "", - (irqreg & INTR_RESUME) ? " resume" : "", - (irqreg & INTR_SUSPEND) ? " suspend" : "", - (irqreg & INTR_RESET_STOP) ? " noreset" : "", - (irqreg & INTR_RESET_START) ? " reset" : "", - (irqreg & INTR_FRAME_MATCH) ? " fmatch" : "", - (irqreg & INTR_CFG_CHG) ? " config" : ""); - } -#else - #define dump_intr(x, y, z) do {} while (0) -#endif /* DEBUG_IRQ */ - -#ifdef DEBUG_EPIRQ - static void dump_ep_intr(const char *label, int nr, int irqreg, - struct device *dev) - { - dev_dbg(dev, "<%s> EP%d_INTR=[%s%s%s%s%s%s%s%s%s]\n", label, nr, - (irqreg & EPINTR_FIFO_FULL) ? " full" : "", - (irqreg & EPINTR_FIFO_EMPTY) ? " fempty" : "", - (irqreg & EPINTR_FIFO_ERROR) ? " ferr" : "", - (irqreg & EPINTR_FIFO_HIGH) ? " fhigh" : "", - (irqreg & EPINTR_FIFO_LOW) ? " flow" : "", - (irqreg & EPINTR_MDEVREQ) ? " mreq" : "", - (irqreg & EPINTR_EOF) ? " eof" : "", - (irqreg & EPINTR_DEVREQ) ? " devreq" : "", - (irqreg & EPINTR_EOT) ? " eot" : ""); - } -#else - #define dump_ep_intr(x, y, z, i) do {} while (0) -#endif /* DEBUG_IRQ */ - -#ifdef DEBUG_DUMP - static void dump_usb_stat(const char *label, - struct imx_udc_struct *imx_usb) - { - int temp = __raw_readl(imx_usb->base + USB_STAT); - - dev_dbg(imx_usb->dev, - "<%s> USB_STAT=[%s%s CFG=%d, INTF=%d, ALTR=%d]\n", label, - (temp & STAT_RST) ? " reset" : "", - (temp & STAT_SUSP) ? " suspend" : "", - (temp & STAT_CFG) >> 5, - (temp & STAT_INTF) >> 3, - (temp & STAT_ALTSET)); - } - - static void dump_ep_stat(const char *label, - struct imx_ep_struct *imx_ep) - { - int temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_INTR(EP_NO(imx_ep))); - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> EP%d_INTR=[%s%s%s%s%s%s%s%s%s]\n", - label, EP_NO(imx_ep), - (temp & EPINTR_FIFO_FULL) ? " full" : "", - (temp & EPINTR_FIFO_EMPTY) ? " fempty" : "", - (temp & EPINTR_FIFO_ERROR) ? " ferr" : "", - (temp & EPINTR_FIFO_HIGH) ? " fhigh" : "", - (temp & EPINTR_FIFO_LOW) ? " flow" : "", - (temp & EPINTR_MDEVREQ) ? " mreq" : "", - (temp & EPINTR_EOF) ? " eof" : "", - (temp & EPINTR_DEVREQ) ? " devreq" : "", - (temp & EPINTR_EOT) ? " eot" : ""); - - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> EP%d_STAT=[%s%s bcount=%d]\n", - label, EP_NO(imx_ep), - (temp & EPSTAT_SIP) ? " sip" : "", - (temp & EPSTAT_STALL) ? " stall" : "", - (temp & EPSTAT_BCOUNT) >> 16); - - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_FSTAT(EP_NO(imx_ep))); - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> EP%d_FSTAT=[%s%s%s%s%s%s%s]\n", - label, EP_NO(imx_ep), - (temp & FSTAT_ERR) ? " ferr" : "", - (temp & FSTAT_UF) ? " funder" : "", - (temp & FSTAT_OF) ? " fover" : "", - (temp & FSTAT_FR) ? " fready" : "", - (temp & FSTAT_FULL) ? " ffull" : "", - (temp & FSTAT_ALRM) ? " falarm" : "", - (temp & FSTAT_EMPTY) ? " fempty" : ""); - } - - static void dump_req(const char *label, struct imx_ep_struct *imx_ep, - struct usb_request *req) - { - int i; - - if (!req || !req->buf) { - dev_dbg(imx_ep->imx_usb->dev, - "<%s> req or req buf is free\n", label); - return; - } - - if ((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state - == EP0_IN_DATA_PHASE) - || (EP_NO(imx_ep) && EP_DIR(imx_ep))) { - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> request dump <", label); - for (i = 0; i < req->length; i++) - printk("%02x-", *((u8 *)req->buf + i)); - printk(">\n"); - } - } - -#else - #define dump_ep_stat(x, y) do {} while (0) - #define dump_usb_stat(x, y) do {} while (0) - #define dump_req(x, y, z) do {} while (0) -#endif /* DEBUG_DUMP */ - -#ifdef DEBUG_ERR - #define D_ERR(dev, args...) dev_dbg(dev, ## args) -#else - #define D_ERR(dev, args...) do {} while (0) -#endif - -#else - #define D_REQ(dev, args...) do {} while (0) - #define D_TRX(dev, args...) do {} while (0) - #define D_INI(dev, args...) do {} while (0) - #define D_EP0(dev, args...) do {} while (0) - #define D_EPX(dev, args...) do {} while (0) - #define dump_ep_intr(x, y, z, i) do {} while (0) - #define dump_intr(x, y, z) do {} while (0) - #define dump_ep_stat(x, y) do {} while (0) - #define dump_usb_stat(x, y) do {} while (0) - #define dump_req(x, y, z) do {} while (0) - #define D_ERR(dev, args...) do {} while (0) -#endif /* DEBUG */ - -#endif /* __LINUX_USB_GADGET_IMX_H */ diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index 570c005062ab..465ef8e2cc91 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -1270,10 +1270,6 @@ dev_release (struct inode *inode, struct file *fd) dev->buf = NULL; put_dev (dev); - /* other endpoints were all decoupled from this device */ - spin_lock_irq(&dev->lock); - dev->state = STATE_DEV_DISABLED; - spin_unlock_irq(&dev->lock); return 0; } diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c index 51cfe72da5bb..d5f050d30edf 100644 --- a/drivers/usb/gadget/m66592-udc.c +++ b/drivers/usb/gadget/m66592-udc.c @@ -1533,7 +1533,7 @@ static const struct usb_gadget_ops m66592_gadget_ops = { static int __exit m66592_remove(struct platform_device *pdev) { - struct m66592 *m66592 = dev_get_drvdata(&pdev->dev); + struct m66592 *m66592 = platform_get_drvdata(pdev); usb_del_gadget_udc(&m66592->gadget); @@ -1584,7 +1584,7 @@ static int __init m66592_probe(struct platform_device *pdev) goto clean_up; } - if (pdev->dev.platform_data == NULL) { + if (dev_get_platdata(&pdev->dev) == NULL) { dev_err(&pdev->dev, "no platform data\n"); ret = -ENODEV; goto clean_up; @@ -1598,11 +1598,11 @@ static int __init m66592_probe(struct platform_device *pdev) goto clean_up; } - m66592->pdata = pdev->dev.platform_data; + m66592->pdata = dev_get_platdata(&pdev->dev); m66592->irq_trigger = ires->flags & IRQF_TRIGGER_MASK; spin_lock_init(&m66592->lock); - dev_set_drvdata(&pdev->dev, m66592); + platform_set_drvdata(pdev, m66592); m66592->gadget.ops = &m66592_gadget_ops; m66592->gadget.max_speed = USB_SPEED_HIGH; diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c index 4a45e80c6e38..2a1ebefd8f9e 100644 --- a/drivers/usb/gadget/multi.c +++ b/drivers/usb/gadget/multi.c @@ -43,16 +43,19 @@ MODULE_LICENSE("GPL"); */ #include "f_mass_storage.c" +#define USBF_ECM_INCLUDED #include "f_ecm.c" -#include "f_subset.c" #ifdef USB_ETH_RNDIS +# define USB_FRNDIS_INCLUDED # include "f_rndis.c" -# include "rndis.c" +# include "rndis.h" #endif -#include "u_ether.c" +#include "u_ether.h" USB_GADGET_COMPOSITE_OPTIONS(); +USB_ETHERNET_MODULE_PARAMETERS(); + /***************************** Device Descriptor ****************************/ #define MULTI_VENDOR_NUM 0x1d6b /* Linux Foundation */ @@ -133,7 +136,7 @@ FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); static struct fsg_common fsg_common; -static u8 hostaddr[ETH_ALEN]; +static u8 host_mac[ETH_ALEN]; static struct usb_function_instance *fi_acm; static struct eth_dev *the_dev; @@ -152,15 +155,13 @@ static __init int rndis_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - ret = rndis_bind_config(c, hostaddr, the_dev); + ret = rndis_bind_config(c, host_mac, the_dev); if (ret < 0) return ret; f_acm_rndis = usb_get_function(fi_acm); - if (IS_ERR(f_acm_rndis)) { - ret = PTR_ERR(f_acm_rndis); - goto err_func_acm; - } + if (IS_ERR(f_acm_rndis)) + return PTR_ERR(f_acm_rndis); ret = usb_add_function(c, f_acm_rndis); if (ret) @@ -175,7 +176,6 @@ err_fsg: usb_remove_function(c, f_acm_rndis); err_conf: usb_put_function(f_acm_rndis); -err_func_acm: return ret; } @@ -216,14 +216,14 @@ static __init int cdc_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - ret = ecm_bind_config(c, hostaddr, the_dev); + ret = ecm_bind_config(c, host_mac, the_dev); if (ret < 0) return ret; /* implicit port_num is zero */ f_acm_multi = usb_get_function(fi_acm); if (IS_ERR(f_acm_multi)) - goto err_func_acm; + return PTR_ERR(f_acm_multi); ret = usb_add_function(c, f_acm_multi); if (ret) @@ -238,7 +238,6 @@ err_fsg: usb_remove_function(c, f_acm_multi); err_conf: usb_put_function(f_acm_multi); -err_func_acm: return ret; } @@ -280,7 +279,8 @@ static int __ref multi_bind(struct usb_composite_dev *cdev) } /* set up network link layer */ - the_dev = gether_setup(cdev->gadget, hostaddr); + the_dev = gether_setup(cdev->gadget, dev_addr, host_addr, host_mac, + qmult); if (IS_ERR(the_dev)) return PTR_ERR(the_dev); diff --git a/drivers/usb/gadget/mv_u3d_core.c b/drivers/usb/gadget/mv_u3d_core.c index 58288e9cf728..bbb6e98c4384 100644 --- a/drivers/usb/gadget/mv_u3d_core.c +++ b/drivers/usb/gadget/mv_u3d_core.c @@ -1109,7 +1109,7 @@ static int mv_u3d_controller_reset(struct mv_u3d *u3d) static int mv_u3d_enable(struct mv_u3d *u3d) { - struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); int retval; if (u3d->active) @@ -1138,7 +1138,7 @@ static int mv_u3d_enable(struct mv_u3d *u3d) static void mv_u3d_disable(struct mv_u3d *u3d) { - struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); if (u3d->clock_gating && u3d->active) { dev_dbg(u3d->dev, "disable u3d\n"); if (pdata->phy_deinit) @@ -1246,7 +1246,7 @@ static int mv_u3d_start(struct usb_gadget *g, struct usb_gadget_driver *driver) { struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); - struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); unsigned long flags; if (u3d->driver) @@ -1277,7 +1277,7 @@ static int mv_u3d_stop(struct usb_gadget *g, struct usb_gadget_driver *driver) { struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); - struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); unsigned long flags; u3d->vbus_valid_detect = 0; @@ -1776,7 +1776,7 @@ static int mv_u3d_remove(struct platform_device *dev) kfree(u3d->eps); if (u3d->irq) - free_irq(u3d->irq, &dev->dev); + free_irq(u3d->irq, u3d); if (u3d->cap_regs) iounmap(u3d->cap_regs); @@ -1786,8 +1786,6 @@ static int mv_u3d_remove(struct platform_device *dev) clk_put(u3d->clk); - platform_set_drvdata(dev, NULL); - kfree(u3d); return 0; @@ -1796,12 +1794,12 @@ static int mv_u3d_remove(struct platform_device *dev) static int mv_u3d_probe(struct platform_device *dev) { struct mv_u3d *u3d = NULL; - struct mv_usb_platform_data *pdata = dev->dev.platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(&dev->dev); int retval = 0; struct resource *r; size_t size; - if (!dev->dev.platform_data) { + if (!dev_get_platdata(&dev->dev)) { dev_err(&dev->dev, "missing platform_data\n"); retval = -ENODEV; goto err_pdata; @@ -1976,7 +1974,7 @@ static int mv_u3d_probe(struct platform_device *dev) return 0; err_unregister: - free_irq(u3d->irq, &dev->dev); + free_irq(u3d->irq, u3d); err_request_irq: err_get_irq: kfree(u3d->status_req); @@ -1997,7 +1995,6 @@ err_map_cap_regs: err_get_cap_regs: err_get_clk: clk_put(u3d->clk); - platform_set_drvdata(dev, NULL); kfree(u3d); err_alloc_private: err_pdata: @@ -2053,7 +2050,7 @@ static SIMPLE_DEV_PM_OPS(mv_u3d_pm_ops, mv_u3d_suspend, mv_u3d_resume); static void mv_u3d_shutdown(struct platform_device *dev) { - struct mv_u3d *u3d = dev_get_drvdata(&dev->dev); + struct mv_u3d *u3d = platform_get_drvdata(dev); u32 tmp; tmp = ioread32(&u3d->op_regs->usbcmd); diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index c2a57023e467..104cdbea635a 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -2100,7 +2100,7 @@ static int mv_udc_remove(struct platform_device *pdev) static int mv_udc_probe(struct platform_device *pdev) { - struct mv_usb_platform_data *pdata = pdev->dev.platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); struct mv_udc *udc; int retval = 0; struct resource *r; @@ -2118,7 +2118,7 @@ static int mv_udc_probe(struct platform_device *pdev) } udc->done = &release_done; - udc->pdata = pdev->dev.platform_data; + udc->pdata = dev_get_platdata(&pdev->dev); spin_lock_init(&udc->lock); udc->dev = pdev; diff --git a/drivers/usb/gadget/ncm.c b/drivers/usb/gadget/ncm.c index 3b02fd4649ce..81956feca1bd 100644 --- a/drivers/usb/gadget/ncm.c +++ b/drivers/usb/gadget/ncm.c @@ -24,23 +24,12 @@ #include <linux/usb/composite.h> #include "u_ether.h" +#include "u_ncm.h" #define DRIVER_DESC "NCM Gadget" /*-------------------------------------------------------------------------*/ -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "f_ncm.c" -#include "u_ether.c" - -/*-------------------------------------------------------------------------*/ - /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! * Instead: allocate your own, using normal USB-IF procedures. */ @@ -54,6 +43,8 @@ /*-------------------------------------------------------------------------*/ USB_GADGET_COMPOSITE_OPTIONS(); +USB_ETHERNET_MODULE_PARAMETERS(); + static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, .bDescriptorType = USB_DT_DEVICE, @@ -111,13 +102,15 @@ static struct usb_gadget_strings *dev_strings[] = { NULL, }; -struct eth_dev *the_dev; -static u8 hostaddr[ETH_ALEN]; +static struct usb_function_instance *f_ncm_inst; +static struct usb_function *f_ncm; /*-------------------------------------------------------------------------*/ static int __init ncm_do_config(struct usb_configuration *c) { + int status; + /* FIXME alloc iConfiguration string, set it in c->strings */ if (gadget_is_otg(c->cdev->gadget)) { @@ -125,7 +118,19 @@ static int __init ncm_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - return ncm_bind_config(c, hostaddr, the_dev); + f_ncm = usb_get_function(f_ncm_inst); + if (IS_ERR(f_ncm)) { + status = PTR_ERR(f_ncm); + return status; + } + + status = usb_add_function(c, f_ncm); + if (status < 0) { + usb_put_function(f_ncm); + return status; + } + + return 0; } static struct usb_configuration ncm_config_driver = { @@ -141,12 +146,20 @@ static struct usb_configuration ncm_config_driver = { static int __init gncm_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; + struct f_ncm_opts *ncm_opts; int status; - /* set up network link layer */ - the_dev = gether_setup(cdev->gadget, hostaddr); - if (IS_ERR(the_dev)) - return PTR_ERR(the_dev); + f_ncm_inst = usb_get_function_instance("ncm"); + if (IS_ERR(f_ncm_inst)) + return PTR_ERR(f_ncm_inst); + + ncm_opts = container_of(f_ncm_inst, struct f_ncm_opts, func_inst); + + gether_set_qmult(ncm_opts->net, qmult); + if (!gether_set_host_addr(ncm_opts->net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(ncm_opts->net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. @@ -169,13 +182,16 @@ static int __init gncm_bind(struct usb_composite_dev *cdev) return 0; fail: - gether_cleanup(the_dev); + usb_put_function_instance(f_ncm_inst); return status; } static int __exit gncm_unbind(struct usb_composite_dev *cdev) { - gether_cleanup(the_dev); + if (!IS_ERR_OR_NULL(f_ncm)) + usb_put_function(f_ncm); + if (!IS_ERR_OR_NULL(f_ncm_inst)) + usb_put_function_instance(f_ncm_inst); return 0; } diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c index f1e50a3e322d..bf2bb39f35a2 100644 --- a/drivers/usb/gadget/net2272.c +++ b/drivers/usb/gadget/net2272.c @@ -1184,7 +1184,7 @@ static const struct usb_gadget_ops net2272_ops = { /*---------------------------------------------------------------------------*/ static ssize_t -net2272_show_registers(struct device *_dev, struct device_attribute *attr, char *buf) +registers_show(struct device *_dev, struct device_attribute *attr, char *buf) { struct net2272 *dev; char *next; @@ -1308,7 +1308,7 @@ net2272_show_registers(struct device *_dev, struct device_attribute *attr, char return PAGE_SIZE - size; } -static DEVICE_ATTR(registers, S_IRUGO, net2272_show_registers, NULL); +static DEVICE_ATTR_RO(registers); /*---------------------------------------------------------------------------*/ diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c index fbd006ab31d3..0781bff70015 100644 --- a/drivers/usb/gadget/net2280.c +++ b/drivers/usb/gadget/net2280.c @@ -1424,8 +1424,8 @@ static const struct usb_gadget_ops net2280_ops = { */ /* "function" sysfs attribute */ -static ssize_t -show_function (struct device *_dev, struct device_attribute *attr, char *buf) +static ssize_t function_show(struct device *_dev, struct device_attribute *attr, + char *buf) { struct net2280 *dev = dev_get_drvdata (_dev); @@ -1435,10 +1435,10 @@ show_function (struct device *_dev, struct device_attribute *attr, char *buf) return 0; return scnprintf (buf, PAGE_SIZE, "%s\n", dev->driver->function); } -static DEVICE_ATTR (function, S_IRUGO, show_function, NULL); +static DEVICE_ATTR_RO(function); -static ssize_t net2280_show_registers(struct device *_dev, - struct device_attribute *attr, char *buf) +static ssize_t registers_show(struct device *_dev, + struct device_attribute *attr, char *buf) { struct net2280 *dev; char *next; @@ -1590,10 +1590,10 @@ static ssize_t net2280_show_registers(struct device *_dev, return PAGE_SIZE - size; } -static DEVICE_ATTR(registers, S_IRUGO, net2280_show_registers, NULL); +static DEVICE_ATTR_RO(registers); -static ssize_t -show_queues (struct device *_dev, struct device_attribute *attr, char *buf) +static ssize_t queues_show(struct device *_dev, struct device_attribute *attr, + char *buf) { struct net2280 *dev; char *next; @@ -1690,7 +1690,7 @@ done: spin_unlock_irqrestore (&dev->lock, flags); return PAGE_SIZE - size; } -static DEVICE_ATTR (queues, S_IRUGO, show_queues, NULL); +static DEVICE_ATTR_RO(queues); #else diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c index 3b344b41a167..0a8099a488c4 100644 --- a/drivers/usb/gadget/nokia.c +++ b/drivers/usb/gadget/nokia.c @@ -16,11 +16,13 @@ */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include "u_serial.h" #include "u_ether.h" #include "u_phonet.h" +#include "u_ecm.h" #include "gadget_chips.h" /* Defines */ @@ -28,24 +30,10 @@ #define NOKIA_VERSION_NUM 0x0211 #define NOKIA_LONG_NAME "N900 (PC-Suite Mode)" -/*-------------------------------------------------------------------------*/ - -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#define USBF_OBEX_INCLUDED -#include "f_ecm.c" -#include "f_obex.c" -#include "f_phonet.c" -#include "u_ether.c" - -/*-------------------------------------------------------------------------*/ USB_GADGET_COMPOSITE_OPTIONS(); +USB_ETHERNET_MODULE_PARAMETERS(); + #define NOKIA_VENDOR_ID 0x0421 /* Nokia */ #define NOKIA_PRODUCT_ID 0x01c8 /* Nokia Gadget */ @@ -98,16 +86,15 @@ MODULE_LICENSE("GPL"); /*-------------------------------------------------------------------------*/ static struct usb_function *f_acm_cfg1; static struct usb_function *f_acm_cfg2; -static u8 hostaddr[ETH_ALEN]; -static struct eth_dev *the_dev; - -enum { - TTY_PORT_OBEX0, - TTY_PORT_OBEX1, - TTY_PORTS_MAX, -}; +static struct usb_function *f_ecm_cfg1; +static struct usb_function *f_ecm_cfg2; +static struct usb_function *f_obex1_cfg1; +static struct usb_function *f_obex2_cfg1; +static struct usb_function *f_obex1_cfg2; +static struct usb_function *f_obex2_cfg2; +static struct usb_function *f_phonet_cfg1; +static struct usb_function *f_phonet_cfg2; -static unsigned char tty_lines[TTY_PORTS_MAX]; static struct usb_configuration nokia_config_500ma_driver = { .label = "Bus Powered", @@ -126,47 +113,114 @@ static struct usb_configuration nokia_config_100ma_driver = { }; static struct usb_function_instance *fi_acm; +static struct usb_function_instance *fi_ecm; +static struct usb_function_instance *fi_obex1; +static struct usb_function_instance *fi_obex2; +static struct usb_function_instance *fi_phonet; static int __init nokia_bind_config(struct usb_configuration *c) { struct usb_function *f_acm; + struct usb_function *f_phonet = NULL; + struct usb_function *f_obex1 = NULL; + struct usb_function *f_ecm; + struct usb_function *f_obex2 = NULL; int status = 0; + int obex1_stat = 0; + int obex2_stat = 0; + int phonet_stat = 0; + + if (!IS_ERR(fi_phonet)) { + f_phonet = usb_get_function(fi_phonet); + if (IS_ERR(f_phonet)) + pr_debug("could not get phonet function\n"); + } - status = phonet_bind_config(c); - if (status) - printk(KERN_DEBUG "could not bind phonet config\n"); - - status = obex_bind_config(c, tty_lines[TTY_PORT_OBEX0]); - if (status) - printk(KERN_DEBUG "could not bind obex config %d\n", 0); + if (!IS_ERR(fi_obex1)) { + f_obex1 = usb_get_function(fi_obex1); + if (IS_ERR(f_obex1)) + pr_debug("could not get obex function 0\n"); + } - status = obex_bind_config(c, tty_lines[TTY_PORT_OBEX1]); - if (status) - printk(KERN_DEBUG "could not bind obex config %d\n", 0); + if (!IS_ERR(fi_obex2)) { + f_obex2 = usb_get_function(fi_obex2); + if (IS_ERR(f_obex2)) + pr_debug("could not get obex function 1\n"); + } f_acm = usb_get_function(fi_acm); - if (IS_ERR(f_acm)) - return PTR_ERR(f_acm); + if (IS_ERR(f_acm)) { + status = PTR_ERR(f_acm); + goto err_get_acm; + } + + f_ecm = usb_get_function(fi_ecm); + if (IS_ERR(f_ecm)) { + status = PTR_ERR(f_ecm); + goto err_get_ecm; + } + + if (!IS_ERR_OR_NULL(f_phonet)) { + phonet_stat = usb_add_function(c, f_phonet); + if (phonet_stat) + pr_debug("could not add phonet function\n"); + } + + if (!IS_ERR_OR_NULL(f_obex1)) { + obex1_stat = usb_add_function(c, f_obex1); + if (obex1_stat) + pr_debug("could not add obex function 0\n"); + } + + if (!IS_ERR_OR_NULL(f_obex2)) { + obex2_stat = usb_add_function(c, f_obex2); + if (obex2_stat) + pr_debug("could not add obex function 1\n"); + } status = usb_add_function(c, f_acm); if (status) goto err_conf; - status = ecm_bind_config(c, hostaddr, the_dev); + status = usb_add_function(c, f_ecm); if (status) { pr_debug("could not bind ecm config %d\n", status); goto err_ecm; } - if (c == &nokia_config_500ma_driver) + if (c == &nokia_config_500ma_driver) { f_acm_cfg1 = f_acm; - else + f_ecm_cfg1 = f_ecm; + f_phonet_cfg1 = f_phonet; + f_obex1_cfg1 = f_obex1; + f_obex2_cfg1 = f_obex2; + } else { f_acm_cfg2 = f_acm; + f_ecm_cfg2 = f_ecm; + f_phonet_cfg2 = f_phonet; + f_obex1_cfg2 = f_obex1; + f_obex2_cfg2 = f_obex2; + } return status; err_ecm: usb_remove_function(c, f_acm); err_conf: + if (!obex2_stat) + usb_remove_function(c, f_obex2); + if (!obex1_stat) + usb_remove_function(c, f_obex1); + if (!phonet_stat) + usb_remove_function(c, f_phonet); + usb_put_function(f_ecm); +err_get_ecm: usb_put_function(f_acm); +err_get_acm: + if (!IS_ERR_OR_NULL(f_obex2)) + usb_put_function(f_obex2); + if (!IS_ERR_OR_NULL(f_obex1)) + usb_put_function(f_obex1); + if (!IS_ERR_OR_NULL(f_phonet)) + usb_put_function(f_phonet); return status; } @@ -174,23 +228,6 @@ static int __init nokia_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; int status; - int cur_line; - - status = gphonet_setup(cdev->gadget); - if (status < 0) - goto err_phonet; - - for (cur_line = 0; cur_line < TTY_PORTS_MAX; cur_line++) { - status = gserial_alloc_line(&tty_lines[cur_line]); - if (status) - goto err_ether; - } - - the_dev = gether_setup(cdev->gadget, hostaddr); - if (IS_ERR(the_dev)) { - status = PTR_ERR(the_dev); - goto err_ether; - } status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) @@ -201,18 +238,40 @@ static int __init nokia_bind(struct usb_composite_dev *cdev) nokia_config_500ma_driver.iConfiguration = status; nokia_config_100ma_driver.iConfiguration = status; - if (!gadget_supports_altsettings(gadget)) + if (!gadget_supports_altsettings(gadget)) { + status = -ENODEV; goto err_usb; + } + + fi_phonet = usb_get_function_instance("phonet"); + if (IS_ERR(fi_phonet)) + pr_debug("could not find phonet function\n"); + + fi_obex1 = usb_get_function_instance("obex"); + if (IS_ERR(fi_obex1)) + pr_debug("could not find obex function 1\n"); + + fi_obex2 = usb_get_function_instance("obex"); + if (IS_ERR(fi_obex2)) + pr_debug("could not find obex function 2\n"); fi_acm = usb_get_function_instance("acm"); - if (IS_ERR(fi_acm)) - goto err_usb; + if (IS_ERR(fi_acm)) { + status = PTR_ERR(fi_acm); + goto err_obex2_inst; + } + + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) { + status = PTR_ERR(fi_ecm); + goto err_acm_inst; + } /* finally register the configuration */ status = usb_add_config(cdev, &nokia_config_500ma_driver, nokia_bind_config); if (status < 0) - goto err_acm_inst; + goto err_ecm_inst; status = usb_add_config(cdev, &nokia_config_100ma_driver, nokia_bind_config); @@ -226,33 +285,55 @@ static int __init nokia_bind(struct usb_composite_dev *cdev) err_put_cfg1: usb_put_function(f_acm_cfg1); + if (!IS_ERR_OR_NULL(f_obex1_cfg1)) + usb_put_function(f_obex1_cfg1); + if (!IS_ERR_OR_NULL(f_obex2_cfg1)) + usb_put_function(f_obex2_cfg1); + if (!IS_ERR_OR_NULL(f_phonet_cfg1)) + usb_put_function(f_phonet_cfg1); + usb_put_function(f_ecm_cfg1); +err_ecm_inst: + usb_put_function_instance(fi_ecm); err_acm_inst: usb_put_function_instance(fi_acm); +err_obex2_inst: + if (!IS_ERR(fi_obex2)) + usb_put_function_instance(fi_obex2); + if (!IS_ERR(fi_obex1)) + usb_put_function_instance(fi_obex1); + if (!IS_ERR(fi_phonet)) + usb_put_function_instance(fi_phonet); err_usb: - gether_cleanup(the_dev); -err_ether: - cur_line--; - while (cur_line >= 0) - gserial_free_line(tty_lines[cur_line--]); - - gphonet_cleanup(); -err_phonet: return status; } static int __exit nokia_unbind(struct usb_composite_dev *cdev) { - int i; - + if (!IS_ERR_OR_NULL(f_obex1_cfg2)) + usb_put_function(f_obex1_cfg2); + if (!IS_ERR_OR_NULL(f_obex2_cfg2)) + usb_put_function(f_obex2_cfg2); + if (!IS_ERR_OR_NULL(f_obex1_cfg1)) + usb_put_function(f_obex1_cfg1); + if (!IS_ERR_OR_NULL(f_obex2_cfg1)) + usb_put_function(f_obex2_cfg1); + if (!IS_ERR_OR_NULL(f_phonet_cfg1)) + usb_put_function(f_phonet_cfg1); + if (!IS_ERR_OR_NULL(f_phonet_cfg2)) + usb_put_function(f_phonet_cfg2); usb_put_function(f_acm_cfg1); usb_put_function(f_acm_cfg2); + usb_put_function(f_ecm_cfg1); + usb_put_function(f_ecm_cfg2); + + usb_put_function_instance(fi_ecm); + if (!IS_ERR(fi_obex2)) + usb_put_function_instance(fi_obex2); + if (!IS_ERR(fi_obex1)) + usb_put_function_instance(fi_obex1); + if (!IS_ERR(fi_phonet)) + usb_put_function_instance(fi_phonet); usb_put_function_instance(fi_acm); - gphonet_cleanup(); - - for (i = 0; i < TTY_PORTS_MAX; i++) - gserial_free_line(tty_lines[i]); - - gether_cleanup(the_dev); return 0; } diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c index b8ed74a823cb..83957cc225d9 100644 --- a/drivers/usb/gadget/omap_udc.c +++ b/drivers/usb/gadget/omap_udc.c @@ -2734,7 +2734,7 @@ static int omap_udc_probe(struct platform_device *pdev) int hmc; struct usb_phy *xceiv = NULL; const char *type = NULL; - struct omap_usb_config *config = pdev->dev.platform_data; + struct omap_usb_config *config = dev_get_platdata(&pdev->dev); struct clk *dc_clk = NULL; struct clk *hhc_clk = NULL; diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index 95c531d5aa4f..cc9207473dbc 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -2117,7 +2117,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev) /* other non-static parts of init */ dev->dev = &pdev->dev; - dev->mach = pdev->dev.platform_data; + dev->mach = dev_get_platdata(&pdev->dev); dev->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index 6b4c7d95853f..3c97da7760da 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -2422,7 +2422,7 @@ static int pxa_udc_probe(struct platform_device *pdev) return udc->irq; udc->dev = &pdev->dev; - udc->mach = pdev->dev.platform_data; + udc->mach = dev_get_platdata(&pdev->dev); udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); gpio = udc->mach->gpio_pullup; @@ -2505,7 +2505,6 @@ static int pxa_udc_remove(struct platform_device *_dev) usb_put_phy(udc->transceiver); udc->transceiver = NULL; - platform_set_drvdata(_dev, NULL); the_controller = NULL; clk_put(udc->clk); iounmap(udc->regs); diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c index 7ff7d9cf2061..68be48d33404 100644 --- a/drivers/usb/gadget/r8a66597-udc.c +++ b/drivers/usb/gadget/r8a66597-udc.c @@ -1469,11 +1469,11 @@ static irqreturn_t r8a66597_irq(int irq, void *_r8a66597) u16 savepipe; u16 mask0; + spin_lock(&r8a66597->lock); + if (r8a66597_is_sudmac(r8a66597)) r8a66597_sudmac_irq(r8a66597); - spin_lock(&r8a66597->lock); - intsts0 = r8a66597_read(r8a66597, INTSTS0); intenb0 = r8a66597_read(r8a66597, INTENB0); @@ -1822,7 +1822,7 @@ static const struct usb_gadget_ops r8a66597_gadget_ops = { static int __exit r8a66597_remove(struct platform_device *pdev) { - struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); + struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); usb_del_gadget_udc(&r8a66597->gadget); del_timer_sync(&r8a66597->timer); @@ -1909,8 +1909,8 @@ static int __init r8a66597_probe(struct platform_device *pdev) } spin_lock_init(&r8a66597->lock); - dev_set_drvdata(&pdev->dev, r8a66597); - r8a66597->pdata = pdev->dev.platform_data; + platform_set_drvdata(pdev, r8a66597); + r8a66597->pdata = dev_get_platdata(&pdev->dev); r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; r8a66597->gadget.ops = &r8a66597_gadget_ops; diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c index 1e4cfb05f70b..9575085ded81 100644 --- a/drivers/usb/gadget/rndis.c +++ b/drivers/usb/gadget/rndis.c @@ -761,6 +761,7 @@ int rndis_signal_connect(int configNr) return rndis_indicate_status_msg(configNr, RNDIS_STATUS_MEDIA_CONNECT); } +EXPORT_SYMBOL(rndis_signal_connect); int rndis_signal_disconnect(int configNr) { @@ -769,6 +770,7 @@ int rndis_signal_disconnect(int configNr) return rndis_indicate_status_msg(configNr, RNDIS_STATUS_MEDIA_DISCONNECT); } +EXPORT_SYMBOL(rndis_signal_disconnect); void rndis_uninit(int configNr) { @@ -783,11 +785,13 @@ void rndis_uninit(int configNr) while ((buf = rndis_get_next_response(configNr, &length))) rndis_free_response(configNr, buf); } +EXPORT_SYMBOL(rndis_uninit); void rndis_set_host_mac(int configNr, const u8 *addr) { rndis_per_dev_params[configNr].host_mac = addr; } +EXPORT_SYMBOL(rndis_set_host_mac); /* * Message Parser @@ -870,6 +874,7 @@ int rndis_msg_parser(u8 configNr, u8 *buf) return -ENOTSUPP; } +EXPORT_SYMBOL(rndis_msg_parser); int rndis_register(void (*resp_avail)(void *v), void *v) { @@ -891,6 +896,7 @@ int rndis_register(void (*resp_avail)(void *v), void *v) return -ENODEV; } +EXPORT_SYMBOL(rndis_register); void rndis_deregister(int configNr) { @@ -899,6 +905,7 @@ void rndis_deregister(int configNr) if (configNr >= RNDIS_MAX_CONFIGS) return; rndis_per_dev_params[configNr].used = 0; } +EXPORT_SYMBOL(rndis_deregister); int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter) { @@ -912,6 +919,7 @@ int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter) return 0; } +EXPORT_SYMBOL(rndis_set_param_dev); int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr) { @@ -924,6 +932,7 @@ int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr) return 0; } +EXPORT_SYMBOL(rndis_set_param_vendor); int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed) { @@ -935,6 +944,7 @@ int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed) return 0; } +EXPORT_SYMBOL(rndis_set_param_medium); void rndis_add_hdr(struct sk_buff *skb) { @@ -949,6 +959,7 @@ void rndis_add_hdr(struct sk_buff *skb) header->DataOffset = cpu_to_le32(36); header->DataLength = cpu_to_le32(skb->len - sizeof(*header)); } +EXPORT_SYMBOL(rndis_add_hdr); void rndis_free_response(int configNr, u8 *buf) { @@ -965,6 +976,7 @@ void rndis_free_response(int configNr, u8 *buf) } } } +EXPORT_SYMBOL(rndis_free_response); u8 *rndis_get_next_response(int configNr, u32 *length) { @@ -986,6 +998,7 @@ u8 *rndis_get_next_response(int configNr, u32 *length) return NULL; } +EXPORT_SYMBOL(rndis_get_next_response); static rndis_resp_t *rndis_add_response(int configNr, u32 length) { @@ -1029,6 +1042,7 @@ int rndis_rm_hdr(struct gether *port, skb_queue_tail(list, skb); return 0; } +EXPORT_SYMBOL(rndis_rm_hdr); #ifdef CONFIG_USB_GADGET_DEBUG_FILES @@ -1128,7 +1142,7 @@ static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS]; #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ -int rndis_init(void) +static int rndis_init(void) { u8 i; @@ -1160,8 +1174,9 @@ int rndis_init(void) return 0; } +module_init(rndis_init); -void rndis_exit(void) +static void rndis_exit(void) { #ifdef CONFIG_USB_GADGET_DEBUG_FILES u8 i; @@ -1173,3 +1188,6 @@ void rndis_exit(void) } #endif } +module_exit(rndis_exit); + +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/rndis.h b/drivers/usb/gadget/rndis.h index 0647f2f34e89..0f4abb4c3775 100644 --- a/drivers/usb/gadget/rndis.h +++ b/drivers/usb/gadget/rndis.h @@ -16,6 +16,7 @@ #define _LINUX_RNDIS_H #include <linux/rndis.h> +#include "u_ether.h" #include "ndis.h" #define RNDIS_MAXIMUM_FRAME_SIZE 1518 @@ -216,7 +217,4 @@ int rndis_signal_disconnect (int configNr); int rndis_state (int configNr); extern void rndis_set_host_mac (int configNr, const u8 *addr); -int rndis_init(void); -void rndis_exit (void); - #endif /* _LINUX_RNDIS_H */ diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index af22f24046b2..d69b36a99dbc 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -29,6 +29,7 @@ #include <linux/slab.h> #include <linux/clk.h> #include <linux/regulator/consumer.h> +#include <linux/of_platform.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -3450,7 +3451,7 @@ static void s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg) static int s3c_hsotg_probe(struct platform_device *pdev) { - struct s3c_hsotg_plat *plat = pdev->dev.platform_data; + struct s3c_hsotg_plat *plat = dev_get_platdata(&pdev->dev); struct usb_phy *phy; struct device *dev = &pdev->dev; struct s3c_hsotg_ep *eps; @@ -3469,7 +3470,7 @@ static int s3c_hsotg_probe(struct platform_device *pdev) phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); if (IS_ERR(phy)) { /* Fallback for pdata */ - plat = pdev->dev.platform_data; + plat = dev_get_platdata(&pdev->dev); if (!plat) { dev_err(&pdev->dev, "no platform data or transceiver defined\n"); return -EPROBE_DEFER; @@ -3648,10 +3649,19 @@ static int s3c_hsotg_remove(struct platform_device *pdev) #define s3c_hsotg_resume NULL #endif +#ifdef CONFIG_OF +static const struct of_device_id s3c_hsotg_of_ids[] = { + { .compatible = "samsung,s3c6400-hsotg", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids); +#endif + static struct platform_driver s3c_hsotg_driver = { .driver = { .name = "s3c-hsotg", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(s3c_hsotg_of_ids), }, .probe = s3c_hsotg_probe, .remove = s3c_hsotg_remove, diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c index b1f0771fbd3d..1a1a41498db2 100644 --- a/drivers/usb/gadget/s3c-hsudc.c +++ b/drivers/usb/gadget/s3c-hsudc.c @@ -1262,7 +1262,7 @@ static int s3c_hsudc_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct resource *res; struct s3c_hsudc *hsudc; - struct s3c24xx_hsudc_platdata *pd = pdev->dev.platform_data; + struct s3c24xx_hsudc_platdata *pd = dev_get_platdata(&pdev->dev); int ret, i; hsudc = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsudc) + @@ -1275,7 +1275,7 @@ static int s3c_hsudc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dev); hsudc->dev = dev; - hsudc->pd = pdev->dev.platform_data; + hsudc->pd = dev_get_platdata(&pdev->dev); hsudc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c index 09c4f70c93c4..c72d810e6b36 100644 --- a/drivers/usb/gadget/s3c2410_udc.c +++ b/drivers/usb/gadget/s3c2410_udc.c @@ -1809,7 +1809,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) } spin_lock_init(&udc->lock); - udc_info = pdev->dev.platform_data; + udc_info = dev_get_platdata(&pdev->dev); rsrc_start = S3C2410_PA_USBDEV; rsrc_len = S3C24XX_SZ_USBDEV; diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c index dbce3a9074e6..08a1a3210a21 100644 --- a/drivers/usb/gadget/storage_common.c +++ b/drivers/usb/gadget/storage_common.c @@ -172,7 +172,7 @@ MODULE_PARM_DESC(num_buffers, "Number of pipeline buffers"); */ #define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS -#endif /* CONFIG_USB_DEBUG */ +#endif /* CONFIG_USB_GADGET_DEBUG_FILES */ /* check if fsg_num_buffers is within a valid range */ static inline int fsg_num_buffers_validate(void) @@ -547,8 +547,8 @@ static void store_cdrom_address(u8 *dest, int msf, u32 addr) /*-------------------------------------------------------------------------*/ -static ssize_t fsg_show_ro(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t ro_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct fsg_lun *curlun = fsg_lun_from_dev(dev); @@ -557,16 +557,16 @@ static ssize_t fsg_show_ro(struct device *dev, struct device_attribute *attr, : curlun->initially_ro); } -static ssize_t fsg_show_nofua(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t nofua_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct fsg_lun *curlun = fsg_lun_from_dev(dev); return sprintf(buf, "%u\n", curlun->nofua); } -static ssize_t fsg_show_file(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t file_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct fsg_lun *curlun = fsg_lun_from_dev(dev); struct rw_semaphore *filesem = dev_get_drvdata(dev); @@ -593,8 +593,8 @@ static ssize_t fsg_show_file(struct device *dev, struct device_attribute *attr, } -static ssize_t fsg_store_ro(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t ro_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) { ssize_t rc; struct fsg_lun *curlun = fsg_lun_from_dev(dev); @@ -623,9 +623,8 @@ static ssize_t fsg_store_ro(struct device *dev, struct device_attribute *attr, return rc; } -static ssize_t fsg_store_nofua(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t nofua_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) { struct fsg_lun *curlun = fsg_lun_from_dev(dev); unsigned nofua; @@ -644,8 +643,8 @@ static ssize_t fsg_store_nofua(struct device *dev, return count; } -static ssize_t fsg_store_file(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t file_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) { struct fsg_lun *curlun = fsg_lun_from_dev(dev); struct rw_semaphore *filesem = dev_get_drvdata(dev); diff --git a/drivers/usb/gadget/tcm_usb_gadget.c b/drivers/usb/gadget/tcm_usb_gadget.c index 7cacd6ae818e..0ff33396eef3 100644 --- a/drivers/usb/gadget/tcm_usb_gadget.c +++ b/drivers/usb/gadget/tcm_usb_gadget.c @@ -1467,9 +1467,8 @@ static int usbg_get_cmd_state(struct se_cmd *se_cmd) return 0; } -static int usbg_queue_tm_rsp(struct se_cmd *se_cmd) +static void usbg_queue_tm_rsp(struct se_cmd *se_cmd) { - return 0; } static const char *usbg_check_wwn(const char *name) diff --git a/drivers/usb/gadget/u_ecm.h b/drivers/usb/gadget/u_ecm.h new file mode 100644 index 000000000000..262cc03cc2c0 --- /dev/null +++ b/drivers/usb/gadget/u_ecm.h @@ -0,0 +1,36 @@ +/* + * u_ecm.h + * + * Utility definitions for the ecm function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_ECM_H +#define U_ECM_H + +#include <linux/usb/composite.h> + +struct f_ecm_opts { + struct usb_function_instance func_inst; + struct net_device *net; + bool bound; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_ECM_H */ diff --git a/drivers/usb/gadget/u_eem.h b/drivers/usb/gadget/u_eem.h new file mode 100644 index 000000000000..e3ae97874c4f --- /dev/null +++ b/drivers/usb/gadget/u_eem.h @@ -0,0 +1,36 @@ +/* + * u_eem.h + * + * Utility definitions for the eem function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_EEM_H +#define U_EEM_H + +#include <linux/usb/composite.h> + +struct f_eem_opts { + struct usb_function_instance func_inst; + struct net_device *net; + bool bound; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_EEM_H */ diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c index 4b76124ce96b..2aae0d61bb19 100644 --- a/drivers/usb/gadget/u_ether.c +++ b/drivers/usb/gadget/u_ether.c @@ -63,6 +63,8 @@ struct eth_dev { struct sk_buff_head rx_frames; + unsigned qmult; + unsigned header_len; struct sk_buff *(*wrap)(struct gether *, struct sk_buff *skb); int (*unwrap)(struct gether *, @@ -76,6 +78,7 @@ struct eth_dev { bool zlp; u8 host_mac[ETH_ALEN]; + u8 dev_mac[ETH_ALEN]; }; /*-------------------------------------------------------------------------*/ @@ -84,12 +87,8 @@ struct eth_dev { #define DEFAULT_QLEN 2 /* double buffering by default */ -static unsigned qmult = 5; -module_param(qmult, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed"); - /* for dual-speed hardware, use deeper queues at high/super speed */ -static inline int qlen(struct usb_gadget *gadget) +static inline int qlen(struct usb_gadget *gadget, unsigned qmult) { if (gadget_is_dualspeed(gadget) && (gadget->speed == USB_SPEED_HIGH || gadget->speed == USB_SPEED_SUPER)) @@ -588,7 +587,7 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, if (gadget_is_dualspeed(dev->gadget)) req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH || dev->gadget->speed == USB_SPEED_SUPER) - ? ((atomic_read(&dev->tx_qlen) % qmult) != 0) + ? ((atomic_read(&dev->tx_qlen) % dev->qmult) != 0) : 0; retval = usb_ep_queue(in, req, GFP_ATOMIC); @@ -697,16 +696,6 @@ static int eth_stop(struct net_device *net) /*-------------------------------------------------------------------------*/ -/* initial value, changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" */ -static char *dev_addr; -module_param(dev_addr, charp, S_IRUGO); -MODULE_PARM_DESC(dev_addr, "Device Ethernet Address"); - -/* this address is invisible to ifconfig */ -static char *host_addr; -module_param(host_addr, charp, S_IRUGO); -MODULE_PARM_DESC(host_addr, "Host Ethernet Address"); - static int get_ether_addr(const char *str, u8 *dev_addr) { if (str) { @@ -728,6 +717,17 @@ static int get_ether_addr(const char *str, u8 *dev_addr) return 1; } +static int get_ether_addr_str(u8 dev_addr[ETH_ALEN], char *str, int len) +{ + if (len < 18) + return -EINVAL; + + snprintf(str, len, "%02x:%02x:%02x:%02x:%02x:%02x", + dev_addr[0], dev_addr[1], dev_addr[2], + dev_addr[3], dev_addr[4], dev_addr[5]); + return 18; +} + static const struct net_device_ops eth_netdev_ops = { .ndo_open = eth_open, .ndo_stop = eth_stop, @@ -755,8 +755,9 @@ static struct device_type gadget_type = { * * Returns negative errno, or zero on success */ -struct eth_dev *gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN], - const char *netname) +struct eth_dev *gether_setup_name(struct usb_gadget *g, + const char *dev_addr, const char *host_addr, + u8 ethaddr[ETH_ALEN], unsigned qmult, const char *netname) { struct eth_dev *dev; struct net_device *net; @@ -777,6 +778,7 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN], /* network device setup */ dev->net = net; + dev->qmult = qmult; snprintf(net->name, sizeof(net->name), "%s%%d", netname); if (get_ether_addr(dev_addr, net->dev_addr)) @@ -806,7 +808,8 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN], INFO(dev, "MAC %pM\n", net->dev_addr); INFO(dev, "HOST MAC %pM\n", dev->host_mac); - /* two kinds of host-initiated state changes: + /* + * two kinds of host-initiated state changes: * - iff DATA transfer is active, carrier is "on" * - tx queueing enabled if open *and* carrier is "on" */ @@ -815,6 +818,186 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN], return dev; } +EXPORT_SYMBOL(gether_setup_name); + +struct net_device *gether_setup_name_default(const char *netname) +{ + struct net_device *net; + struct eth_dev *dev; + + net = alloc_etherdev(sizeof(*dev)); + if (!net) + return ERR_PTR(-ENOMEM); + + dev = netdev_priv(net); + spin_lock_init(&dev->lock); + spin_lock_init(&dev->req_lock); + INIT_WORK(&dev->work, eth_work); + INIT_LIST_HEAD(&dev->tx_reqs); + INIT_LIST_HEAD(&dev->rx_reqs); + + skb_queue_head_init(&dev->rx_frames); + + /* network device setup */ + dev->net = net; + dev->qmult = QMULT_DEFAULT; + snprintf(net->name, sizeof(net->name), "%s%%d", netname); + + eth_random_addr(dev->dev_mac); + pr_warn("using random %s ethernet address\n", "self"); + eth_random_addr(dev->host_mac); + pr_warn("using random %s ethernet address\n", "host"); + + net->netdev_ops = ð_netdev_ops; + + SET_ETHTOOL_OPS(net, &ops); + SET_NETDEV_DEVTYPE(net, &gadget_type); + + return net; +} +EXPORT_SYMBOL(gether_setup_name_default); + +int gether_register_netdev(struct net_device *net) +{ + struct eth_dev *dev; + struct usb_gadget *g; + struct sockaddr sa; + int status; + + if (!net->dev.parent) + return -EINVAL; + dev = netdev_priv(net); + g = dev->gadget; + status = register_netdev(net); + if (status < 0) { + dev_dbg(&g->dev, "register_netdev failed, %d\n", status); + return status; + } else { + INFO(dev, "HOST MAC %pM\n", dev->host_mac); + + /* two kinds of host-initiated state changes: + * - iff DATA transfer is active, carrier is "on" + * - tx queueing enabled if open *and* carrier is "on" + */ + netif_carrier_off(net); + } + sa.sa_family = net->type; + memcpy(sa.sa_data, dev->dev_mac, ETH_ALEN); + rtnl_lock(); + status = dev_set_mac_address(net, &sa); + rtnl_unlock(); + if (status) + pr_warn("cannot set self ethernet address: %d\n", status); + else + INFO(dev, "MAC %pM\n", dev->dev_mac); + + return status; +} +EXPORT_SYMBOL(gether_register_netdev); + +void gether_set_gadget(struct net_device *net, struct usb_gadget *g) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + dev->gadget = g; + SET_NETDEV_DEV(net, &g->dev); +} +EXPORT_SYMBOL(gether_set_gadget); + +int gether_set_dev_addr(struct net_device *net, const char *dev_addr) +{ + struct eth_dev *dev; + u8 new_addr[ETH_ALEN]; + + dev = netdev_priv(net); + if (get_ether_addr(dev_addr, new_addr)) + return -EINVAL; + memcpy(dev->dev_mac, new_addr, ETH_ALEN); + return 0; +} +EXPORT_SYMBOL(gether_set_dev_addr); + +int gether_get_dev_addr(struct net_device *net, char *dev_addr, int len) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + return get_ether_addr_str(dev->dev_mac, dev_addr, len); +} +EXPORT_SYMBOL(gether_get_dev_addr); + +int gether_set_host_addr(struct net_device *net, const char *host_addr) +{ + struct eth_dev *dev; + u8 new_addr[ETH_ALEN]; + + dev = netdev_priv(net); + if (get_ether_addr(host_addr, new_addr)) + return -EINVAL; + memcpy(dev->host_mac, new_addr, ETH_ALEN); + return 0; +} +EXPORT_SYMBOL(gether_set_host_addr); + +int gether_get_host_addr(struct net_device *net, char *host_addr, int len) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + return get_ether_addr_str(dev->host_mac, host_addr, len); +} +EXPORT_SYMBOL(gether_get_host_addr); + +int gether_get_host_addr_cdc(struct net_device *net, char *host_addr, int len) +{ + struct eth_dev *dev; + + if (len < 13) + return -EINVAL; + + dev = netdev_priv(net); + snprintf(host_addr, len, "%pm", dev->host_mac); + + return strlen(host_addr); +} +EXPORT_SYMBOL(gether_get_host_addr_cdc); + +void gether_get_host_addr_u8(struct net_device *net, u8 host_mac[ETH_ALEN]) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + memcpy(host_mac, dev->host_mac, ETH_ALEN); +} +EXPORT_SYMBOL(gether_get_host_addr_u8); + +void gether_set_qmult(struct net_device *net, unsigned qmult) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + dev->qmult = qmult; +} +EXPORT_SYMBOL(gether_set_qmult); + +unsigned gether_get_qmult(struct net_device *net) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + return dev->qmult; +} +EXPORT_SYMBOL(gether_get_qmult); + +int gether_get_ifname(struct net_device *net, char *name, int len) +{ + rtnl_lock(); + strlcpy(name, netdev_name(net), len); + rtnl_unlock(); + return strlen(name); +} +EXPORT_SYMBOL(gether_get_ifname); /** * gether_cleanup - remove Ethernet-over-USB device @@ -831,6 +1014,7 @@ void gether_cleanup(struct eth_dev *dev) flush_work(&dev->work); free_netdev(dev->net); } +EXPORT_SYMBOL(gether_cleanup); /** * gether_connect - notify network layer that USB link is active @@ -873,11 +1057,12 @@ struct net_device *gether_connect(struct gether *link) } if (result == 0) - result = alloc_requests(dev, link, qlen(dev->gadget)); + result = alloc_requests(dev, link, qlen(dev->gadget, + dev->qmult)); if (result == 0) { dev->zlp = link->is_zlp_ok; - DBG(dev, "qlen %d\n", qlen(dev->gadget)); + DBG(dev, "qlen %d\n", qlen(dev->gadget, dev->qmult)); dev->header_len = link->header_len; dev->unwrap = link->unwrap; @@ -910,6 +1095,7 @@ fail0: return ERR_PTR(result); return dev->net; } +EXPORT_SYMBOL(gether_connect); /** * gether_disconnect - notify network layer that USB link is inactive @@ -980,3 +1166,7 @@ void gether_disconnect(struct gether *link) dev->port_usb = NULL; spin_unlock(&dev->lock); } +EXPORT_SYMBOL(gether_disconnect); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/u_ether.h b/drivers/usb/gadget/u_ether.h index 02522338a708..fb23d1fde8eb 100644 --- a/drivers/usb/gadget/u_ether.h +++ b/drivers/usb/gadget/u_ether.h @@ -21,6 +21,26 @@ #include "gadget_chips.h" +#define QMULT_DEFAULT 5 + +/* + * dev_addr: initial value + * changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" + * host_addr: this address is invisible to ifconfig + */ +#define USB_ETHERNET_MODULE_PARAMETERS() \ + static unsigned qmult = QMULT_DEFAULT; \ + module_param(qmult, uint, S_IRUGO|S_IWUSR); \ + MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed");\ + \ + static char *dev_addr; \ + module_param(dev_addr, charp, S_IRUGO); \ + MODULE_PARM_DESC(dev_addr, "Device Ethernet Address"); \ + \ + static char *host_addr; \ + module_param(host_addr, charp, S_IRUGO); \ + MODULE_PARM_DESC(host_addr, "Host Ethernet Address") + struct eth_dev; /* @@ -71,8 +91,9 @@ struct gether { |USB_CDC_PACKET_TYPE_DIRECTED) /* variant of gether_setup that allows customizing network device name */ -struct eth_dev *gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN], - const char *netname); +struct eth_dev *gether_setup_name(struct usb_gadget *g, + const char *dev_addr, const char *host_addr, + u8 ethaddr[ETH_ALEN], unsigned qmult, const char *netname); /* netdev setup/teardown as directed by the gadget driver */ /* gether_setup - initialize one ethernet-over-usb link @@ -88,11 +109,145 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN], * Returns negative errno, or zero on success */ static inline struct eth_dev *gether_setup(struct usb_gadget *g, - u8 ethaddr[ETH_ALEN]) + const char *dev_addr, const char *host_addr, + u8 ethaddr[ETH_ALEN], unsigned qmult) { - return gether_setup_name(g, ethaddr, "usb"); + return gether_setup_name(g, dev_addr, host_addr, ethaddr, qmult, "usb"); } +/* + * variant of gether_setup_default that allows customizing + * network device name + */ +struct net_device *gether_setup_name_default(const char *netname); + +/* + * gether_register_netdev - register the net device + * @net: net device to register + * + * Registers the net device associated with this ethernet-over-usb link + * + */ +int gether_register_netdev(struct net_device *net); + +/* gether_setup_default - initialize one ethernet-over-usb link + * Context: may sleep + * + * This sets up the single network link that may be exported by a + * gadget driver using this framework. The link layer addresses + * are set to random values. + * + * Returns negative errno, or zero on success + */ +static inline struct net_device *gether_setup_default(void) +{ + return gether_setup_name_default("usb"); +} + +/** + * gether_set_gadget - initialize one ethernet-over-usb link with a gadget + * @net: device representing this link + * @g: the gadget to initialize with + * + * This associates one ethernet-over-usb link with a gadget. + */ +void gether_set_gadget(struct net_device *net, struct usb_gadget *g); + +/** + * gether_set_dev_addr - initialize an ethernet-over-usb link with eth address + * @net: device representing this link + * @dev_addr: eth address of this device + * + * This sets the device-side Ethernet address of this ethernet-over-usb link + * if dev_addr is correct. + * Returns negative errno if the new address is incorrect. + */ +int gether_set_dev_addr(struct net_device *net, const char *dev_addr); + +/** + * gether_get_dev_addr - get an ethernet-over-usb link eth address + * @net: device representing this link + * @dev_addr: place to store device's eth address + * @len: length of the @dev_addr buffer + * + * This gets the device-side Ethernet address of this ethernet-over-usb link. + * Returns zero on success, else negative errno. + */ +int gether_get_dev_addr(struct net_device *net, char *dev_addr, int len); + +/** + * gether_set_host_addr - initialize an ethernet-over-usb link with host address + * @net: device representing this link + * @host_addr: eth address of the host + * + * This sets the host-side Ethernet address of this ethernet-over-usb link + * if host_addr is correct. + * Returns negative errno if the new address is incorrect. + */ +int gether_set_host_addr(struct net_device *net, const char *host_addr); + +/** + * gether_get_host_addr - get an ethernet-over-usb link host address + * @net: device representing this link + * @host_addr: place to store eth address of the host + * @len: length of the @host_addr buffer + * + * This gets the host-side Ethernet address of this ethernet-over-usb link. + * Returns zero on success, else negative errno. + */ +int gether_get_host_addr(struct net_device *net, char *host_addr, int len); + +/** + * gether_get_host_addr_cdc - get an ethernet-over-usb link host address + * @net: device representing this link + * @host_addr: place to store eth address of the host + * @len: length of the @host_addr buffer + * + * This gets the CDC formatted host-side Ethernet address of this + * ethernet-over-usb link. + * Returns zero on success, else negative errno. + */ +int gether_get_host_addr_cdc(struct net_device *net, char *host_addr, int len); + +/** + * gether_get_host_addr_u8 - get an ethernet-over-usb link host address + * @net: device representing this link + * @host_mac: place to store the eth address of the host + * + * This gets the binary formatted host-side Ethernet address of this + * ethernet-over-usb link. + */ +void gether_get_host_addr_u8(struct net_device *net, u8 host_mac[ETH_ALEN]); + +/** + * gether_set_qmult - initialize an ethernet-over-usb link with a multiplier + * @net: device representing this link + * @qmult: queue multiplier + * + * This sets the queue length multiplier of this ethernet-over-usb link. + * For higher speeds use longer queues. + */ +void gether_set_qmult(struct net_device *net, unsigned qmult); + +/** + * gether_get_qmult - get an ethernet-over-usb link multiplier + * @net: device representing this link + * + * This gets the queue length multiplier of this ethernet-over-usb link. + */ +unsigned gether_get_qmult(struct net_device *net); + +/** + * gether_get_ifname - get an ethernet-over-usb link interface name + * @net: device representing this link + * @name: place to store the interface name + * @len: length of the @name buffer + * + * This gets the interface name of this ethernet-over-usb link. + * Returns zero on success, else negative errno. + */ +int gether_get_ifname(struct net_device *net, char *name, int len); + void gether_cleanup(struct eth_dev *dev); /* connect/disconnect is handled by individual functions */ @@ -117,9 +272,6 @@ int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], struct eth_dev *dev); int ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], struct eth_dev *dev); -int ncm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - struct eth_dev *dev); -int eem_bind_config(struct usb_configuration *c, struct eth_dev *dev); #ifdef USB_ETH_RNDIS diff --git a/drivers/usb/gadget/u_ether_configfs.h b/drivers/usb/gadget/u_ether_configfs.h new file mode 100644 index 000000000000..bcbd30146cfd --- /dev/null +++ b/drivers/usb/gadget/u_ether_configfs.h @@ -0,0 +1,164 @@ +/* + * u_ether_configfs.h + * + * Utility definitions for configfs support in USB Ethernet functions + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __U_ETHER_CONFIGFS_H +#define __U_ETHER_CONFIGFS_H + +#define USB_ETHERNET_CONFIGFS_ITEM(_f_) \ + CONFIGFS_ATTR_STRUCT(f_##_f_##_opts); \ + CONFIGFS_ATTR_OPS(f_##_f_##_opts); \ + \ + static void _f_##_attr_release(struct config_item *item) \ + { \ + struct f_##_f_##_opts *opts = to_f_##_f_##_opts(item); \ + \ + usb_put_function_instance(&opts->func_inst); \ + } \ + \ + static struct configfs_item_operations _f_##_item_ops = { \ + .release = _f_##_attr_release, \ + .show_attribute = f_##_f_##_opts_attr_show, \ + .store_attribute = f_##_f_##_opts_attr_store, \ + } + +#define USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(_f_) \ + static ssize_t _f_##_opts_dev_addr_show(struct f_##_f_##_opts *opts, \ + char *page) \ + { \ + int result; \ + \ + mutex_lock(&opts->lock); \ + result = gether_get_dev_addr(opts->net, page, PAGE_SIZE); \ + mutex_unlock(&opts->lock); \ + \ + return result; \ + } \ + \ + static ssize_t _f_##_opts_dev_addr_store(struct f_##_f_##_opts *opts, \ + const char *page, size_t len)\ + { \ + int ret; \ + \ + mutex_lock(&opts->lock); \ + if (opts->refcnt) { \ + mutex_unlock(&opts->lock); \ + return -EBUSY; \ + } \ + \ + ret = gether_set_dev_addr(opts->net, page); \ + mutex_unlock(&opts->lock); \ + if (!ret) \ + ret = len; \ + return ret; \ + } \ + \ + static struct f_##_f_##_opts_attribute f_##_f_##_opts_dev_addr = \ + __CONFIGFS_ATTR(dev_addr, S_IRUGO | S_IWUSR, \ + _f_##_opts_dev_addr_show, \ + _f_##_opts_dev_addr_store) + +#define USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(_f_) \ + static ssize_t _f_##_opts_host_addr_show(struct f_##_f_##_opts *opts, \ + char *page) \ + { \ + int result; \ + \ + mutex_lock(&opts->lock); \ + result = gether_get_host_addr(opts->net, page, PAGE_SIZE); \ + mutex_unlock(&opts->lock); \ + \ + return result; \ + } \ + \ + static ssize_t _f_##_opts_host_addr_store(struct f_##_f_##_opts *opts, \ + const char *page, size_t len)\ + { \ + int ret; \ + \ + mutex_lock(&opts->lock); \ + if (opts->refcnt) { \ + mutex_unlock(&opts->lock); \ + return -EBUSY; \ + } \ + \ + ret = gether_set_host_addr(opts->net, page); \ + mutex_unlock(&opts->lock); \ + if (!ret) \ + ret = len; \ + return ret; \ + } \ + \ + static struct f_##_f_##_opts_attribute f_##_f_##_opts_host_addr = \ + __CONFIGFS_ATTR(host_addr, S_IRUGO | S_IWUSR, \ + _f_##_opts_host_addr_show, \ + _f_##_opts_host_addr_store) + +#define USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(_f_) \ + static ssize_t _f_##_opts_qmult_show(struct f_##_f_##_opts *opts, \ + char *page) \ + { \ + unsigned qmult; \ + \ + mutex_lock(&opts->lock); \ + qmult = gether_get_qmult(opts->net); \ + mutex_unlock(&opts->lock); \ + return sprintf(page, "%d", qmult); \ + } \ + \ + static ssize_t _f_##_opts_qmult_store(struct f_##_f_##_opts *opts, \ + const char *page, size_t len)\ + { \ + u8 val; \ + int ret; \ + \ + mutex_lock(&opts->lock); \ + if (opts->refcnt) { \ + ret = -EBUSY; \ + goto out; \ + } \ + \ + ret = kstrtou8(page, 0, &val); \ + if (ret) \ + goto out; \ + \ + gether_set_qmult(opts->net, val); \ + ret = len; \ +out: \ + mutex_unlock(&opts->lock); \ + return ret; \ + } \ + \ + static struct f_##_f_##_opts_attribute f_##_f_##_opts_qmult = \ + __CONFIGFS_ATTR(qmult, S_IRUGO | S_IWUSR, \ + _f_##_opts_qmult_show, \ + _f_##_opts_qmult_store) + +#define USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(_f_) \ + static ssize_t _f_##_opts_ifname_show(struct f_##_f_##_opts *opts, \ + char *page) \ + { \ + int ret; \ + \ + mutex_lock(&opts->lock); \ + ret = gether_get_ifname(opts->net, page, PAGE_SIZE); \ + mutex_unlock(&opts->lock); \ + \ + return ret; \ + } \ + \ + static struct f_##_f_##_opts_attribute f_##_f_##_opts_ifname = \ + __CONFIGFS_ATTR_RO(ifname, _f_##_opts_ifname_show) + +#endif /* __U_ETHER_CONFIGFS_H */ diff --git a/drivers/usb/gadget/u_gether.h b/drivers/usb/gadget/u_gether.h new file mode 100644 index 000000000000..d4078426ba5d --- /dev/null +++ b/drivers/usb/gadget/u_gether.h @@ -0,0 +1,36 @@ +/* + * u_gether.h + * + * Utility definitions for the subset function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_GETHER_H +#define U_GETHER_H + +#include <linux/usb/composite.h> + +struct f_gether_opts { + struct usb_function_instance func_inst; + struct net_device *net; + bool bound; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_GETHER_H */ diff --git a/drivers/usb/gadget/u_ncm.h b/drivers/usb/gadget/u_ncm.h new file mode 100644 index 000000000000..ce0f3a78ca13 --- /dev/null +++ b/drivers/usb/gadget/u_ncm.h @@ -0,0 +1,36 @@ +/* + * u_ncm.h + * + * Utility definitions for the ncm function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_NCM_H +#define U_NCM_H + +#include <linux/usb/composite.h> + +struct f_ncm_opts { + struct usb_function_instance func_inst; + struct net_device *net; + bool bound; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_NCM_H */ diff --git a/drivers/usb/gadget/u_phonet.h b/drivers/usb/gadget/u_phonet.h index 09a75259b6cd..98ced18779ea 100644 --- a/drivers/usb/gadget/u_phonet.h +++ b/drivers/usb/gadget/u_phonet.h @@ -14,8 +14,16 @@ #include <linux/usb/composite.h> #include <linux/usb/cdc.h> -int gphonet_setup(struct usb_gadget *gadget); -int phonet_bind_config(struct usb_configuration *c); -void gphonet_cleanup(void); +struct f_phonet_opts { + struct usb_function_instance func_inst; + bool bound; + struct net_device *net; +}; + +struct net_device *gphonet_setup_default(void); +void gphonet_set_gadget(struct net_device *net, struct usb_gadget *g); +int gphonet_register_netdev(struct net_device *net); +int phonet_bind_config(struct usb_configuration *c, struct net_device *dev); +void gphonet_cleanup(struct net_device *dev); #endif /* __U_PHONET_H */ diff --git a/drivers/usb/gadget/u_rndis.h b/drivers/usb/gadget/u_rndis.h new file mode 100644 index 000000000000..c62ba82e9600 --- /dev/null +++ b/drivers/usb/gadget/u_rndis.h @@ -0,0 +1,41 @@ +/* + * u_rndis.h + * + * Utility definitions for the subset function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_RNDIS_H +#define U_RNDIS_H + +#include <linux/usb/composite.h> + +struct f_rndis_opts { + struct usb_function_instance func_inst; + u32 vendor_id; + const char *manufacturer; + struct net_device *net; + bool bound; + bool borrowed_net; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net); + +#endif /* U_RNDIS_H */ diff --git a/drivers/usb/gadget/u_uac1.c b/drivers/usb/gadget/u_uac1.c index c7d460f43390..7a55fea43430 100644 --- a/drivers/usb/gadget/u_uac1.c +++ b/drivers/usb/gadget/u_uac1.c @@ -191,7 +191,7 @@ try_again: frames = bytes_to_frames(runtime, count); old_fs = get_fs(); set_fs(KERNEL_DS); - result = snd_pcm_lib_write(snd->substream, buf, frames); + result = snd_pcm_lib_write(snd->substream, (void __user *)buf, frames); if (result != frames) { ERROR(card, "Playback error: %d\n", (int)result); set_fs(old_fs); diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index ffd8fa541101..59891b1c48fc 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -23,6 +23,7 @@ #include <linux/list.h> #include <linux/err.h> #include <linux/dma-mapping.h> +#include <linux/workqueue.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -50,6 +51,8 @@ static DEFINE_MUTEX(udc_lock); /* ------------------------------------------------------------------------- */ +#ifdef CONFIG_HAS_DMA + int usb_gadget_map_request(struct usb_gadget *gadget, struct usb_request *req, int is_in) { @@ -99,13 +102,22 @@ void usb_gadget_unmap_request(struct usb_gadget *gadget, } EXPORT_SYMBOL_GPL(usb_gadget_unmap_request); +#endif /* CONFIG_HAS_DMA */ + /* ------------------------------------------------------------------------- */ +static void usb_gadget_state_work(struct work_struct *work) +{ + struct usb_gadget *gadget = work_to_gadget(work); + + sysfs_notify(&gadget->dev.kobj, NULL, "state"); +} + void usb_gadget_set_state(struct usb_gadget *gadget, enum usb_device_state state) { gadget->state = state; - sysfs_notify(&gadget->dev.kobj, NULL, "status"); + schedule_work(&gadget->work); } EXPORT_SYMBOL_GPL(usb_gadget_set_state); @@ -192,11 +204,14 @@ int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget, goto err1; dev_set_name(&gadget->dev, "gadget"); + INIT_WORK(&gadget->work, usb_gadget_state_work); gadget->dev.parent = parent; +#ifdef CONFIG_HAS_DMA dma_set_coherent_mask(&gadget->dev, parent->coherent_dma_mask); gadget->dev.dma_parms = parent->dma_parms; gadget->dev.dma_mask = parent->dma_mask; +#endif if (release) gadget->dev.release = release; @@ -309,6 +324,7 @@ found: usb_gadget_remove_driver(udc); kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE); + flush_work(&gadget->work); device_unregister(&udc->dev); device_unregister(&gadget->dev); } @@ -454,31 +470,31 @@ static ssize_t usb_udc_softconn_store(struct device *dev, } static DEVICE_ATTR(soft_connect, S_IWUSR, NULL, usb_udc_softconn_store); -static ssize_t usb_gadget_state_show(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t state_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_udc *udc = container_of(dev, struct usb_udc, dev); struct usb_gadget *gadget = udc->gadget; return sprintf(buf, "%s\n", usb_state_string(gadget->state)); } -static DEVICE_ATTR(state, S_IRUGO, usb_gadget_state_show, NULL); +static DEVICE_ATTR_RO(state); #define USB_UDC_SPEED_ATTR(name, param) \ -ssize_t usb_udc_##param##_show(struct device *dev, \ +ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \ return snprintf(buf, PAGE_SIZE, "%s\n", \ usb_speed_string(udc->gadget->param)); \ } \ -static DEVICE_ATTR(name, S_IRUGO, usb_udc_##param##_show, NULL) +static DEVICE_ATTR_RO(name) static USB_UDC_SPEED_ATTR(current_speed, speed); static USB_UDC_SPEED_ATTR(maximum_speed, max_speed); #define USB_UDC_ATTR(name) \ -ssize_t usb_udc_##name##_show(struct device *dev, \ +ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \ @@ -486,7 +502,7 @@ ssize_t usb_udc_##name##_show(struct device *dev, \ \ return snprintf(buf, PAGE_SIZE, "%d\n", gadget->name); \ } \ -static DEVICE_ATTR(name, S_IRUGO, usb_udc_##name##_show, NULL) +static DEVICE_ATTR_RO(name) static USB_UDC_ATTR(is_otg); static USB_UDC_ATTR(is_a_peripheral); diff --git a/drivers/usb/gadget/uvc.h b/drivers/usb/gadget/uvc.h index 817e9e19cecf..7a9111de8054 100644 --- a/drivers/usb/gadget/uvc.h +++ b/drivers/usb/gadget/uvc.h @@ -57,6 +57,7 @@ struct uvc_event #include <linux/videodev2.h> #include <linux/version.h> #include <media/v4l2-fh.h> +#include <media/v4l2-device.h> #include "uvc_queue.h" @@ -145,6 +146,7 @@ enum uvc_state struct uvc_device { struct video_device *vdev; + struct v4l2_device v4l2_dev; enum uvc_state state; struct usb_function func; struct uvc_video video; diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c index 7ce27e35550b..0bb5d50075de 100644 --- a/drivers/usb/gadget/uvc_queue.c +++ b/drivers/usb/gadget/uvc_queue.c @@ -103,10 +103,26 @@ static void uvc_buffer_queue(struct vb2_buffer *vb) spin_unlock_irqrestore(&queue->irqlock, flags); } +static void uvc_wait_prepare(struct vb2_queue *vq) +{ + struct uvc_video_queue *queue = vb2_get_drv_priv(vq); + + mutex_unlock(&queue->mutex); +} + +static void uvc_wait_finish(struct vb2_queue *vq) +{ + struct uvc_video_queue *queue = vb2_get_drv_priv(vq); + + mutex_lock(&queue->mutex); +} + static struct vb2_ops uvc_queue_qops = { .queue_setup = uvc_queue_setup, .buf_prepare = uvc_buffer_prepare, .buf_queue = uvc_buffer_queue, + .wait_prepare = uvc_wait_prepare, + .wait_finish = uvc_wait_finish, }; static int uvc_queue_init(struct uvc_video_queue *queue, @@ -177,12 +193,16 @@ static int uvc_queue_buffer(struct uvc_video_queue *queue, mutex_lock(&queue->mutex); ret = vb2_qbuf(&queue->queue, buf); + if (ret < 0) + goto done; + spin_lock_irqsave(&queue->irqlock, flags); ret = (queue->flags & UVC_QUEUE_PAUSED) != 0; queue->flags &= ~UVC_QUEUE_PAUSED; spin_unlock_irqrestore(&queue->irqlock, flags); - mutex_unlock(&queue->mutex); +done: + mutex_unlock(&queue->mutex); return ret; } diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 344d5e2f87d7..5be0326aae38 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -17,7 +17,6 @@ config USB_C67X00_HCD config USB_XHCI_HCD tristate "xHCI HCD (USB 3.0) support" - depends on USB_ARCH_HAS_XHCI ---help--- The eXtensible Host Controller Interface (xHCI) is standard for USB 3.0 "SuperSpeed" host controller hardware. @@ -30,20 +29,10 @@ if USB_XHCI_HCD config USB_XHCI_PLATFORM tristate -config USB_XHCI_HCD_DEBUGGING - bool "Debugging for the xHCI host controller" - ---help--- - Say 'Y' to turn on debugging for the xHCI host controller driver. - This will spew debugging output, even in interrupt context. - This should only be used for debugging xHCI driver bugs. - - If unsure, say N. - endif # USB_XHCI_HCD config USB_EHCI_HCD tristate "EHCI HCD (USB 2.0) support" - depends on USB_ARCH_HAS_EHCI ---help--- The Enhanced Host Controller Interface (EHCI) is standard for USB 2.0 "high speed" (480 Mbit/sec, 60 Mbyte/sec) host controller hardware. @@ -115,12 +104,6 @@ config USB_EHCI_HCD_PMC_MSP Enables support for the onchip USB controller on the PMC_MSP7100 Family SoC's. If unsure, say N. -config USB_EHCI_BIG_ENDIAN_MMIO - bool - -config USB_EHCI_BIG_ENDIAN_DESC - bool - config XPS_USB_HCD_XILINX bool "Use Xilinx usb host EHCI controller core" depends on (PPC32 || MICROBLAZE) @@ -150,13 +133,11 @@ config USB_EHCI_MXC config USB_EHCI_HCD_OMAP tristate "EHCI support for OMAP3 and later chips" depends on ARCH_OMAP + select NOP_USB_XCEIV default y ---help--- Enables support for the on-chip EHCI controller on OMAP3 and later chips. - If your system uses a PHY on the USB port, you will need to - enable USB_PHY and the appropriate PHY driver as well. Most - boards need the NOP_USB_XCEIV PHY driver. config USB_EHCI_HCD_ORION tristate "Support for Marvell EBU on-chip EHCI USB controller" @@ -188,7 +169,6 @@ config USB_EHCI_HCD_AT91 config USB_EHCI_MSM tristate "Support for Qualcomm QSD/MSM on-chip EHCI USB controller" depends on ARCH_MSM - depends on USB_PHY select USB_EHCI_ROOT_HUB_TT select USB_MSM_OTG ---help--- @@ -200,7 +180,7 @@ config USB_EHCI_MSM has an external PHY. config USB_EHCI_TEGRA - boolean "NVIDIA Tegra HCD support" + tristate "NVIDIA Tegra HCD support" depends on ARCH_TEGRA select USB_EHCI_ROOT_HUB_TT select USB_PHY @@ -225,7 +205,7 @@ config USB_EHCI_SH config USB_EHCI_S5P tristate "EHCI support for Samsung S5P/EXYNOS SoC Series" - depends on PLAT_S5P + depends on PLAT_S5P || ARCH_EXYNOS help Enable support for the Samsung S5Pxxxx and Exynos3/4/5 SOC's on-chip EHCI controller. @@ -285,7 +265,7 @@ config USB_EHCI_HCD_PLATFORM config USB_OCTEON_EHCI bool "Octeon on-chip EHCI support" - depends on CPU_CAVIUM_OCTEON + depends on CAVIUM_OCTEON_SOC default n select USB_EHCI_BIG_ENDIAN_MMIO help @@ -345,9 +325,31 @@ config USB_ISP1362_HCD To compile this driver as a module, choose M here: the module will be called isp1362-hcd. +config USB_FUSBH200_HCD + tristate "FUSBH200 HCD support" + depends on USB + default N + ---help--- + Faraday FUSBH200 is designed to meet USB2.0 EHCI specification + with minor modification. + + To compile this driver as a module, choose M here: the + module will be called fusbh200-hcd. + +config USB_FOTG210_HCD + tristate "FOTG210 HCD support" + depends on USB + default N + ---help--- + Faraday FOTG210 is an OTG controller which can be configured as + an USB2.0 host. It is designed to meet USB2.0 EHCI specification + with minor modification. + + To compile this driver as a module, choose M here: the + module will be called fotg210-hcd. + config USB_OHCI_HCD - tristate "OHCI HCD support" - depends on USB_ARCH_HAS_OHCI + tristate "OHCI HCD (USB 1.1) support" select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 depends on USB_ISP1301 || !ARCH_LPC32XX ---help--- @@ -415,8 +417,8 @@ config USB_OHCI_HCD_PPC_OF default USB_OHCI_HCD_PPC_OF_BE || USB_OHCI_HCD_PPC_OF_LE config USB_OHCI_HCD_PCI - bool "OHCI support for PCI-bus USB controllers" - depends on PCI && (STB03xxx || PPC_MPC52xx || USB_OHCI_HCD_PPC_OF) + tristate "OHCI support for PCI-bus USB controllers" + depends on PCI default y select USB_OHCI_LITTLE_ENDIAN ---help--- @@ -470,7 +472,7 @@ config USB_CNS3XXX_OHCI It is needed for low-speed USB 1.0 device support. config USB_OHCI_HCD_PLATFORM - bool "Generic OHCI driver for a platform device" + tristate "Generic OHCI driver for a platform device" default n ---help--- Adds an OHCI host driver for a generic platform device, which @@ -480,7 +482,7 @@ config USB_OHCI_HCD_PLATFORM config USB_OCTEON_OHCI bool "Octeon on-chip OHCI support" - depends on CPU_CAVIUM_OCTEON + depends on CAVIUM_OCTEON_SOC default USB_OCTEON_EHCI select USB_OHCI_BIG_ENDIAN_MMIO select USB_OHCI_LITTLE_ENDIAN @@ -489,20 +491,6 @@ config USB_OCTEON_OHCI controller. It is needed for low-speed USB 1.0 device support. All CN6XXX based chips with USB are supported. - -config USB_OHCI_BIG_ENDIAN_DESC - bool - default n - -config USB_OHCI_BIG_ENDIAN_MMIO - bool - default n - -config USB_OHCI_LITTLE_ENDIAN - bool - default n if STB03xxx || PPC_MPC52xx - default y - endif # USB_OHCI_HCD config USB_UHCI_HCD @@ -702,3 +690,20 @@ config USB_HCD_SSB for ehci and ohci. If unsure, say N. + +config USB_HCD_TEST_MODE + bool "HCD test mode support" + ---help--- + Say 'Y' to enable additional software test modes that may be + supported by the host controller drivers. + + One such test mode is the Embedded High-speed Host Electrical Test + (EHSET) for EHCI host controller hardware, specifically the "Single + Step Set Feature" test. Typically this will be enabled for On-the-Go + or embedded hosts that need to undergo USB-IF compliance testing with + the aid of special testing hardware. In the future, this may expand + to include other tests that require support from a HCD driver. + + This option is of interest only to developers who need to validate + their USB hardware designs. It is not needed for normal use. If + unsure, say N. diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 4fb73c156d72..50b0041c09a9 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -4,6 +4,9 @@ ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG +# tell define_trace.h where to find the xhci trace header +CFLAGS_xhci-trace.o := -I$(src) + isp1760-y := isp1760-hcd.o isp1760-if.o fhci-y := fhci-hcd.o fhci-hub.o fhci-q.o @@ -13,6 +16,7 @@ fhci-$(CONFIG_FHCI_DEBUG) += fhci-dbg.o xhci-hcd-y := xhci.o xhci-mem.o xhci-hcd-y += xhci-ring.o xhci-hub.o xhci-dbg.o +xhci-hcd-y += xhci-trace.o xhci-hcd-$(CONFIG_PCI) += xhci-pci.o ifneq ($(CONFIG_USB_XHCI_PLATFORM), ) @@ -33,11 +37,16 @@ obj-$(CONFIG_USB_EHCI_HCD_SPEAR) += ehci-spear.o obj-$(CONFIG_USB_EHCI_S5P) += ehci-s5p.o obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o obj-$(CONFIG_USB_EHCI_MSM) += ehci-msm.o +obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o + obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o +obj-$(CONFIG_USB_OHCI_HCD_PCI) += ohci-pci.o +obj-$(CONFIG_USB_OHCI_HCD_PLATFORM) += ohci-platform.o + obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o obj-$(CONFIG_USB_FHCI_HCD) += fhci.o obj-$(CONFIG_USB_XHCI_HCD) += xhci-hcd.o @@ -52,3 +61,5 @@ obj-$(CONFIG_USB_FSL_MPH_DR_OF) += fsl-mph-dr-of.o obj-$(CONFIG_USB_OCTEON2_COMMON) += octeon2-common.o obj-$(CONFIG_USB_HCD_BCMA) += bcma-hcd.o obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o +obj-$(CONFIG_USB_FUSBH200_HCD) += fusbh200-hcd.o +obj-$(CONFIG_USB_FOTG210_HCD) += fotg210-hcd.o diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c index 02f4611faa62..3b645ff46f7b 100644 --- a/drivers/usb/host/ehci-atmel.c +++ b/drivers/usb/host/ehci-atmel.c @@ -37,15 +37,15 @@ static int clocked; static void atmel_start_clock(void) { - clk_enable(iclk); - clk_enable(fclk); + clk_prepare_enable(iclk); + clk_prepare_enable(fclk); clocked = 1; } static void atmel_stop_clock(void) { - clk_disable(fclk); - clk_disable(iclk); + clk_disable_unprepare(fclk); + clk_disable_unprepare(iclk); clocked = 0; } diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c index 5429d2645bbc..aa5b603f3933 100644 --- a/drivers/usb/host/ehci-dbg.c +++ b/drivers/usb/host/ehci-dbg.c @@ -18,7 +18,7 @@ /* this file is part of ehci-hcd.c */ -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) /* check the values in the HCSPARAMS register * (host controller _Structural_ parameters) @@ -62,7 +62,7 @@ static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {} #endif -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) /* check the values in the HCCPARAMS register * (host controller _Capability_ parameters) @@ -101,7 +101,7 @@ static inline void dbg_hcc_params (struct ehci_hcd *ehci, char *label) {} #endif -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) static void __maybe_unused dbg_qtd (const char *label, struct ehci_hcd *ehci, struct ehci_qtd *qtd) @@ -301,7 +301,7 @@ static inline int __maybe_unused dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) { return 0; } -#endif /* DEBUG */ +#endif /* DEBUG || CONFIG_DYNAMIC_DEBUG */ /* functions have the "wrong" filename when they're output... */ #define dbg_status(ehci, label, status) { \ @@ -336,7 +336,6 @@ static inline void remove_debug_files (struct ehci_hcd *bus) { } static int debug_async_open(struct inode *, struct file *); static int debug_periodic_open(struct inode *, struct file *); static int debug_registers_open(struct inode *, struct file *); -static int debug_async_open(struct inode *, struct file *); static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); static int debug_close(struct inode *, struct file *); diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 3be3df233a0e..947b009009f1 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -57,7 +57,7 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver, pr_debug("initializing FSL-SOC USB Controller\n"); /* Need platform data for setup */ - pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data; + pdata = (struct fsl_usb2_platform_data *)dev_get_platdata(&pdev->dev); if (!pdata) { dev_err(&pdev->dev, "No platform data for %s.\n", dev_name(&pdev->dev)); @@ -190,7 +190,7 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver, static void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev) { - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); if (!IS_ERR_OR_NULL(hcd->phy)) { otg_set_host(hcd->phy->otg, NULL); @@ -218,7 +218,7 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, struct ehci_hcd *ehci = hcd_to_ehci(hcd); void __iomem *non_ehci = hcd->regs; struct device *dev = hcd->self.controller; - struct fsl_usb2_platform_data *pdata = dev->platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); if (pdata->controller_ver < 0) { dev_warn(hcd->self.controller, "Could not get controller version\n"); @@ -291,7 +291,7 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) struct fsl_usb2_platform_data *pdata; void __iomem *non_ehci = hcd->regs; - pdata = hcd->self.controller->platform_data; + pdata = dev_get_platdata(hcd->self.controller); if (pdata->have_sysif_regs) { /* @@ -363,7 +363,7 @@ static int ehci_fsl_setup(struct usb_hcd *hcd) struct device *dev; dev = hcd->self.controller; - pdata = hcd->self.controller->platform_data; + pdata = dev_get_platdata(hcd->self.controller); ehci->big_endian_desc = pdata->big_endian_desc; ehci->big_endian_mmio = pdata->big_endian_mmio; @@ -415,10 +415,10 @@ static int ehci_fsl_mpc512x_drv_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct ehci_hcd *ehci = hcd_to_ehci(hcd); - struct fsl_usb2_platform_data *pdata = dev->platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); u32 tmp; -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE); mode &= USBMODE_CM_MASK; tmp = ehci_readl(ehci, hcd->regs + 0x140); /* usbcmd */ @@ -484,7 +484,7 @@ static int ehci_fsl_mpc512x_drv_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct ehci_hcd *ehci = hcd_to_ehci(hcd); - struct fsl_usb2_platform_data *pdata = dev->platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); u32 tmp; dev_dbg(dev, "suspend=%d already_suspended=%d\n", @@ -669,7 +669,7 @@ static const struct hc_driver ehci_fsl_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_USB2 | HCD_MEMORY, + .flags = HCD_USB2 | HCD_MEMORY | HCD_BH, /* * basic lifecycle operations @@ -732,6 +732,7 @@ static struct platform_driver ehci_fsl_driver = { .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "fsl-ehci", + .owner = THIS_MODULE, .pm = EHCI_FSL_PM_OPS, }, }; diff --git a/drivers/usb/host/ehci-grlib.c b/drivers/usb/host/ehci-grlib.c index 5d75de9729b6..b52a66ce92e8 100644 --- a/drivers/usb/host/ehci-grlib.c +++ b/drivers/usb/host/ehci-grlib.c @@ -43,7 +43,7 @@ static const struct hc_driver ehci_grlib_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * basic lifecycle operations @@ -153,9 +153,7 @@ err_irq: static int ehci_hcd_grlib_remove(struct platform_device *op) { - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); - - dev_set_drvdata(&op->dev, NULL); + struct usb_hcd *hcd = platform_get_drvdata(op); dev_dbg(&op->dev, "stopping GRLIB GRUSBHC EHCI USB Controller\n"); @@ -169,15 +167,6 @@ static int ehci_hcd_grlib_remove(struct platform_device *op) } -static void ehci_hcd_grlib_shutdown(struct platform_device *op) -{ - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); - - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); -} - - static const struct of_device_id ehci_hcd_grlib_of_match[] = { { .name = "GAISLER_EHCI", @@ -193,7 +182,7 @@ MODULE_DEVICE_TABLE(of, ehci_hcd_grlib_of_match); static struct platform_driver ehci_grlib_driver = { .probe = ehci_hcd_grlib_probe, .remove = ehci_hcd_grlib_remove, - .shutdown = ehci_hcd_grlib_shutdown, + .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "grlib-ehci", .owner = THIS_MODULE, diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 246e124e6ac5..5d6022f30ebe 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -139,7 +139,7 @@ static inline unsigned ehci_read_frame_index(struct ehci_hcd *ehci) /*-------------------------------------------------------------------------*/ /* - * handshake - spin reading hc until handshake completes or fails + * ehci_handshake - spin reading hc until handshake completes or fails * @ptr: address of hc register to be read * @mask: bits to look at in result of read * @done: value of those bits when handshake succeeds @@ -155,8 +155,8 @@ static inline unsigned ehci_read_frame_index(struct ehci_hcd *ehci) * before driver shutdown. But it also seems to be caused by bugs in cardbus * bridge shutdown: shutting down the bridge before the devices using it. */ -static int handshake (struct ehci_hcd *ehci, void __iomem *ptr, - u32 mask, u32 done, int usec) +int ehci_handshake(struct ehci_hcd *ehci, void __iomem *ptr, + u32 mask, u32 done, int usec) { u32 result; @@ -172,6 +172,7 @@ static int handshake (struct ehci_hcd *ehci, void __iomem *ptr, } while (usec > 0); return -ETIMEDOUT; } +EXPORT_SYMBOL_GPL(ehci_handshake); /* check TDI/ARC silicon is in host mode */ static int tdi_in_host_mode (struct ehci_hcd *ehci) @@ -212,7 +213,7 @@ static int ehci_halt (struct ehci_hcd *ehci) spin_unlock_irq(&ehci->lock); synchronize_irq(ehci_to_hcd(ehci)->irq); - return handshake(ehci, &ehci->regs->status, + return ehci_handshake(ehci, &ehci->regs->status, STS_HALT, STS_HALT, 16 * 125); } @@ -251,7 +252,7 @@ static int ehci_reset (struct ehci_hcd *ehci) ehci_writel(ehci, command, &ehci->regs->command); ehci->rh_state = EHCI_RH_HALTED; ehci->next_statechange = jiffies; - retval = handshake (ehci, &ehci->regs->command, + retval = ehci_handshake(ehci, &ehci->regs->command, CMD_RESET, 0, 250 * 1000); if (ehci->has_hostpc) { @@ -286,7 +287,8 @@ static void ehci_quiesce (struct ehci_hcd *ehci) /* wait for any schedule enables/disables to take effect */ temp = (ehci->command << 10) & (STS_ASS | STS_PSS); - handshake(ehci, &ehci->regs->status, STS_ASS | STS_PSS, temp, 16 * 125); + ehci_handshake(ehci, &ehci->regs->status, STS_ASS | STS_PSS, temp, + 16 * 125); /* then disable anything that's still active */ spin_lock_irq(&ehci->lock); @@ -295,7 +297,8 @@ static void ehci_quiesce (struct ehci_hcd *ehci) spin_unlock_irq(&ehci->lock); /* hardware can take 16 microframes to turn off ... */ - handshake(ehci, &ehci->regs->status, STS_ASS | STS_PSS, 0, 16 * 125); + ehci_handshake(ehci, &ehci->regs->status, STS_ASS | STS_PSS, 0, + 16 * 125); } /*-------------------------------------------------------------------------*/ @@ -437,14 +440,6 @@ static void ehci_stop (struct usb_hcd *hcd) if (ehci->amd_pll_fix == 1) usb_amd_dev_put(); -#ifdef EHCI_STATS - ehci_dbg(ehci, "irq normal %ld err %ld iaa %ld (lost %ld)\n", - ehci->stats.normal, ehci->stats.error, ehci->stats.iaa, - ehci->stats.lost_iaa); - ehci_dbg (ehci, "complete %ld unlink %ld\n", - ehci->stats.complete, ehci->stats.unlink); -#endif - dbg_status (ehci, "ehci_stop completed", ehci_readl(ehci, &ehci->regs->status)); } @@ -484,6 +479,7 @@ static int ehci_init(struct usb_hcd *hcd) ehci->periodic_size = DEFAULT_I_TDPS; INIT_LIST_HEAD(&ehci->async_unlink); INIT_LIST_HEAD(&ehci->async_idle); + INIT_LIST_HEAD(&ehci->intr_unlink_wait); INIT_LIST_HEAD(&ehci->intr_unlink); INIT_LIST_HEAD(&ehci->intr_qh_list); INIT_LIST_HEAD(&ehci->cached_itd_list); @@ -939,7 +935,7 @@ ehci_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); unsigned long flags; - struct ehci_qh *qh, *tmp; + struct ehci_qh *qh; /* ASSERT: any requests/urbs are being unlinked */ /* ASSERT: nobody can be submitting urbs for this any more */ @@ -969,17 +965,13 @@ rescan: qh->qh_state = QH_STATE_IDLE; switch (qh->qh_state) { case QH_STATE_LINKED: - case QH_STATE_COMPLETING: - for (tmp = ehci->async->qh_next.qh; - tmp && tmp != qh; - tmp = tmp->qh_next.qh) - continue; - /* periodic qh self-unlinks on empty, and a COMPLETING qh - * may already be unlinked. - */ - if (tmp) + WARN_ON(!list_empty(&qh->qtd_list)); + if (usb_endpoint_type(&ep->desc) != USB_ENDPOINT_XFER_INT) start_unlink_async(ehci, qh); + else + start_unlink_intr(ehci, qh); /* FALL THROUGH */ + case QH_STATE_COMPLETING: /* already in unlinking */ case QH_STATE_UNLINK: /* wait for hw to finish? */ case QH_STATE_UNLINK_WAIT: idle_timeout: @@ -1166,7 +1158,7 @@ static const struct hc_driver ehci_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * basic lifecycle operations @@ -1266,11 +1258,6 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ehci_hcd_msp_driver #endif -#ifdef CONFIG_USB_EHCI_TEGRA -#include "ehci-tegra.c" -#define PLATFORM_DRIVER tegra_ehci_driver -#endif - #ifdef CONFIG_SPARC_LEON #include "ehci-grlib.c" #define PLATFORM_DRIVER ehci_grlib_driver @@ -1305,7 +1292,7 @@ static int __init ehci_hcd_init(void) sizeof(struct ehci_qh), sizeof(struct ehci_qtd), sizeof(struct ehci_itd), sizeof(struct ehci_sitd)); -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) ehci_debug_root = debugfs_create_dir("ehci", usb_debug_root); if (!ehci_debug_root) { retval = -ENOENT; @@ -1354,7 +1341,7 @@ clean2: platform_driver_unregister(&PLATFORM_DRIVER); clean0: #endif -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) debugfs_remove(ehci_debug_root); ehci_debug_root = NULL; err_debug: @@ -1378,7 +1365,7 @@ static void __exit ehci_hcd_cleanup(void) #ifdef PS3_SYSTEM_BUS_DRIVER ps3_ehci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER); #endif -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) debugfs_remove(ehci_debug_root); #endif clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded); diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index 9ab4a4d9768a..835fc0844a66 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -42,6 +42,12 @@ static int ehci_hub_control( u16 wLength ); +static int persist_enabled_on_companion(struct usb_device *udev, void *unused) +{ + return !udev->maxchild && udev->persist_enabled && + udev->bus->root_hub->speed < USB_SPEED_HIGH; +} + /* After a power loss, ports that were owned by the companion must be * reset so that the companion can still own them. */ @@ -56,6 +62,16 @@ static void ehci_handover_companion_ports(struct ehci_hcd *ehci) if (!ehci->owned_ports) return; + /* + * USB 1.1 devices are mostly HIDs, which don't need to persist across + * suspends. If we ensure that none of our companion's devices have + * persist_enabled (by looking through all USB 1.1 buses in the system), + * we can skip this and avoid slowing resume down. Devices without + * persist will just get reenumerated shortly after resume anyway. + */ + if (!usb_for_each_dev(NULL, persist_enabled_on_companion)) + return; + /* Make sure the ports are powered */ port = HCS_N_PORTS(ehci->hcs_params); while (port--) { @@ -167,7 +183,7 @@ static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, spin_lock_irq(&ehci->lock); /* clear phy low-power mode before changing wakeup flags */ - if (ehci->has_hostpc) { + if (ehci->has_tdi_phy_lpm) { port = HCS_N_PORTS(ehci->hcs_params); while (port--) { u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; @@ -195,13 +211,11 @@ static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, else t2 |= PORT_WKOC_E | PORT_WKCONN_E; } - ehci_vdbg(ehci, "port %d, %08x -> %08x\n", - port + 1, t1, t2); ehci_writel(ehci, t2, reg); } /* enter phy low-power mode again */ - if (ehci->has_hostpc) { + if (ehci->has_tdi_phy_lpm) { port = HCS_N_PORTS(ehci->hcs_params); while (port--) { u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; @@ -286,14 +300,12 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) } if (t1 != t2) { - ehci_vdbg (ehci, "port %d, %08x -> %08x\n", - port + 1, t1, t2); ehci_writel(ehci, t2, reg); changed = 1; } } - if (changed && ehci->has_hostpc) { + if (changed && ehci->has_tdi_phy_lpm) { spin_unlock_irq(&ehci->lock); msleep(5); /* 5 ms for HCD to enter low-power mode */ spin_lock_irq(&ehci->lock); @@ -329,6 +341,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) end_unlink_async(ehci); unlink_empty_async_suspended(ehci); + ehci_handle_start_intr_unlinks(ehci); ehci_handle_intr_unlinks(ehci); end_free_itds(ehci); @@ -419,7 +432,7 @@ static int ehci_bus_resume (struct usb_hcd *hcd) goto shutdown; /* clear phy low-power mode before resume */ - if (ehci->bus_suspended && ehci->has_hostpc) { + if (ehci->bus_suspended && ehci->has_tdi_phy_lpm) { i = HCS_N_PORTS(ehci->hcs_params); while (i--) { if (test_bit(i, &ehci->bus_suspended)) { @@ -466,7 +479,6 @@ static int ehci_bus_resume (struct usb_hcd *hcd) if (test_bit(i, &resume_needed)) { temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME); ehci_writel(ehci, temp, &ehci->regs->port_status [i]); - ehci_vdbg (ehci, "resumed port %d\n", i + 1); } } @@ -695,6 +707,145 @@ ehci_hub_descriptor ( } /*-------------------------------------------------------------------------*/ +#ifdef CONFIG_USB_HCD_TEST_MODE + +#define EHSET_TEST_SINGLE_STEP_SET_FEATURE 0x06 + +static void usb_ehset_completion(struct urb *urb) +{ + struct completion *done = urb->context; + + complete(done); +} +static int submit_single_step_set_feature( + struct usb_hcd *hcd, + struct urb *urb, + int is_setup +); + +/* + * Allocate and initialize a control URB. This request will be used by the + * EHSET SINGLE_STEP_SET_FEATURE test in which the DATA and STATUS stages + * of the GetDescriptor request are sent 15 seconds after the SETUP stage. + * Return NULL if failed. + */ +static struct urb *request_single_step_set_feature_urb( + struct usb_device *udev, + void *dr, + void *buf, + struct completion *done +) { + struct urb *urb; + struct usb_hcd *hcd = bus_to_hcd(udev->bus); + struct usb_host_endpoint *ep; + + urb = usb_alloc_urb(0, GFP_KERNEL); + if (!urb) + return NULL; + + urb->pipe = usb_rcvctrlpipe(udev, 0); + ep = (usb_pipein(urb->pipe) ? udev->ep_in : udev->ep_out) + [usb_pipeendpoint(urb->pipe)]; + if (!ep) { + usb_free_urb(urb); + return NULL; + } + + urb->ep = ep; + urb->dev = udev; + urb->setup_packet = (void *)dr; + urb->transfer_buffer = buf; + urb->transfer_buffer_length = USB_DT_DEVICE_SIZE; + urb->complete = usb_ehset_completion; + urb->status = -EINPROGRESS; + urb->actual_length = 0; + urb->transfer_flags = URB_DIR_IN; + usb_get_urb(urb); + atomic_inc(&urb->use_count); + atomic_inc(&urb->dev->urbnum); + urb->setup_dma = dma_map_single( + hcd->self.controller, + urb->setup_packet, + sizeof(struct usb_ctrlrequest), + DMA_TO_DEVICE); + urb->transfer_dma = dma_map_single( + hcd->self.controller, + urb->transfer_buffer, + urb->transfer_buffer_length, + DMA_FROM_DEVICE); + urb->context = done; + return urb; +} + +static int ehset_single_step_set_feature(struct usb_hcd *hcd, int port) +{ + int retval = -ENOMEM; + struct usb_ctrlrequest *dr; + struct urb *urb; + struct usb_device *udev; + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct usb_device_descriptor *buf; + DECLARE_COMPLETION_ONSTACK(done); + + /* Obtain udev of the rhub's child port */ + udev = usb_hub_find_child(hcd->self.root_hub, port); + if (!udev) { + ehci_err(ehci, "No device attached to the RootHub\n"); + return -ENODEV; + } + buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); + if (!dr) { + kfree(buf); + return -ENOMEM; + } + + /* Fill Setup packet for GetDescriptor */ + dr->bRequestType = USB_DIR_IN; + dr->bRequest = USB_REQ_GET_DESCRIPTOR; + dr->wValue = cpu_to_le16(USB_DT_DEVICE << 8); + dr->wIndex = 0; + dr->wLength = cpu_to_le16(USB_DT_DEVICE_SIZE); + urb = request_single_step_set_feature_urb(udev, dr, buf, &done); + if (!urb) + goto cleanup; + + /* Submit just the SETUP stage */ + retval = submit_single_step_set_feature(hcd, urb, 1); + if (retval) + goto out1; + if (!wait_for_completion_timeout(&done, msecs_to_jiffies(2000))) { + usb_kill_urb(urb); + retval = -ETIMEDOUT; + ehci_err(ehci, "%s SETUP stage timed out on ep0\n", __func__); + goto out1; + } + msleep(15 * 1000); + + /* Complete remaining DATA and STATUS stages using the same URB */ + urb->status = -EINPROGRESS; + usb_get_urb(urb); + atomic_inc(&urb->use_count); + atomic_inc(&urb->dev->urbnum); + retval = submit_single_step_set_feature(hcd, urb, 0); + if (!retval && !wait_for_completion_timeout(&done, + msecs_to_jiffies(2000))) { + usb_kill_urb(urb); + retval = -ETIMEDOUT; + ehci_err(ehci, "%s IN stage timed out on ep0\n", __func__); + } +out1: + usb_free_urb(urb); +cleanup: + kfree(dr); + kfree(buf); + return retval; +} +#endif /* CONFIG_USB_HCD_TEST_MODE */ +/*-------------------------------------------------------------------------*/ static int ehci_hub_control ( struct usb_hcd *hcd, @@ -772,7 +923,7 @@ static int ehci_hub_control ( goto error; /* clear phy low-power mode before resume */ - if (ehci->has_hostpc) { + if (ehci->has_tdi_phy_lpm) { temp1 = ehci_readl(ehci, hostpc_reg); ehci_writel(ehci, temp1 & ~HOSTPC_PHCD, hostpc_reg); @@ -785,6 +936,8 @@ static int ehci_hub_control ( ehci_writel(ehci, temp | PORT_RESUME, status_reg); ehci->reset_done[wIndex] = jiffies + msecs_to_jiffies(20); + set_bit(wIndex, &ehci->resuming_ports); + usb_hcd_start_port_resume(&hcd->self, wIndex); break; case USB_PORT_FEAT_C_SUSPEND: clear_bit(wIndex, &ehci->port_c_suspend); @@ -849,52 +1002,49 @@ static int ehci_hub_control ( } } - /* whoever resumes must GetPortStatus to complete it!! */ - if (temp & PORT_RESUME) { + /* no reset or resume pending */ + if (!ehci->reset_done[wIndex]) { /* Remote Wakeup received? */ - if (!ehci->reset_done[wIndex]) { + if (temp & PORT_RESUME) { /* resume signaling for 20 msec */ ehci->reset_done[wIndex] = jiffies + msecs_to_jiffies(20); usb_hcd_start_port_resume(&hcd->self, wIndex); + set_bit(wIndex, &ehci->resuming_ports); /* check the port again */ mod_timer(&ehci_to_hcd(ehci)->rh_timer, ehci->reset_done[wIndex]); } - /* resume completed? */ - else if (time_after_eq(jiffies, - ehci->reset_done[wIndex])) { - clear_bit(wIndex, &ehci->suspended_ports); - set_bit(wIndex, &ehci->port_c_suspend); - ehci->reset_done[wIndex] = 0; - usb_hcd_end_port_resume(&hcd->self, wIndex); - - /* stop resume signaling */ - temp &= ~(PORT_RWC_BITS | - PORT_SUSPEND | PORT_RESUME); - ehci_writel(ehci, temp, status_reg); - clear_bit(wIndex, &ehci->resuming_ports); - retval = handshake(ehci, status_reg, - PORT_RESUME, 0, 2000 /* 2msec */); - if (retval != 0) { - ehci_err(ehci, - "port %d resume error %d\n", + /* reset or resume not yet complete */ + } else if (!time_after_eq(jiffies, ehci->reset_done[wIndex])) { + ; /* wait until it is complete */ + + /* resume completed */ + } else if (test_bit(wIndex, &ehci->resuming_ports)) { + clear_bit(wIndex, &ehci->suspended_ports); + set_bit(wIndex, &ehci->port_c_suspend); + ehci->reset_done[wIndex] = 0; + usb_hcd_end_port_resume(&hcd->self, wIndex); + + /* stop resume signaling */ + temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME); + ehci_writel(ehci, temp, status_reg); + clear_bit(wIndex, &ehci->resuming_ports); + retval = ehci_handshake(ehci, status_reg, + PORT_RESUME, 0, 2000 /* 2msec */); + if (retval != 0) { + ehci_err(ehci, "port %d resume error %d\n", wIndex + 1, retval); - goto error; - } - temp = ehci_readl(ehci, status_reg); + goto error; } - } + temp = ehci_readl(ehci, status_reg); /* whoever resets must GetPortStatus to complete it!! */ - if ((temp & PORT_RESET) - && time_after_eq(jiffies, - ehci->reset_done[wIndex])) { + } else { status |= USB_PORT_STAT_C_RESET << 16; ehci->reset_done [wIndex] = 0; - clear_bit(wIndex, &ehci->resuming_ports); /* force reset to complete */ ehci_writel(ehci, temp & ~(PORT_RWC_BITS | PORT_RESET), @@ -902,7 +1052,7 @@ static int ehci_hub_control ( /* REVISIT: some hardware needs 550+ usec to clear * this bit; seems too long to spin routinely... */ - retval = handshake(ehci, status_reg, + retval = ehci_handshake(ehci, status_reg, PORT_RESET, 0, 1000); if (retval != 0) { ehci_err (ehci, "port %d reset error %d\n", @@ -915,11 +1065,6 @@ static int ehci_hub_control ( ehci_readl(ehci, status_reg)); } - if (!(temp & (PORT_RESUME|PORT_RESET))) { - ehci->reset_done[wIndex] = 0; - clear_bit(wIndex, &ehci->resuming_ports); - } - /* transfer dedicated ports to the companion hc */ if ((temp & PORT_CONNECT) && test_bit(wIndex, &ehci->companion_ports)) { @@ -1015,12 +1160,12 @@ static int ehci_hub_control ( /* After above check the port must be connected. * Set appropriate bit thus could put phy into low power - * mode if we have hostpc feature + * mode if we have tdi_phy_lpm feature */ temp &= ~PORT_WKCONN_E; temp |= PORT_WKDISC_E | PORT_WKOC_E; ehci_writel(ehci, temp | PORT_SUSPEND, status_reg); - if (ehci->has_hostpc) { + if (ehci->has_tdi_phy_lpm) { spin_unlock_irqrestore(&ehci->lock, flags); msleep(5);/* 5ms for HCD enter low pwr mode */ spin_lock_irqsave(&ehci->lock, flags); @@ -1040,7 +1185,7 @@ static int ehci_hub_control ( status_reg); break; case USB_PORT_FEAT_RESET: - if (temp & PORT_RESUME) + if (temp & (PORT_SUSPEND|PORT_RESUME)) goto error; /* line status bits may report this as low speed, * which can be fine if this root hub has a @@ -1054,7 +1199,6 @@ static int ehci_hub_control ( wIndex + 1); temp |= PORT_OWNER; } else { - ehci_vdbg (ehci, "port %d reset\n", wIndex + 1); temp |= PORT_RESET; temp &= ~PORT_PE; @@ -1075,6 +1219,15 @@ static int ehci_hub_control ( * about the EHCI-specific stuff. */ case USB_PORT_FEAT_TEST: +#ifdef CONFIG_USB_HCD_TEST_MODE + if (selector == EHSET_TEST_SINGLE_STEP_SET_FEATURE) { + spin_unlock_irqrestore(&ehci->lock, flags); + retval = ehset_single_step_set_feature(hcd, + wIndex); + spin_lock_irqsave(&ehci->lock, flags); + break; + } +#endif if (!selector || selector > 5) goto error; spin_unlock_irqrestore(&ehci->lock, flags); diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c index ef2c3a1eca4b..52a77734a225 100644 --- a/drivers/usb/host/ehci-mem.c +++ b/drivers/usb/host/ehci-mem.c @@ -93,6 +93,7 @@ static struct ehci_qh *ehci_qh_alloc (struct ehci_hcd *ehci, gfp_t flags) qh->qh_dma = dma; // INIT_LIST_HEAD (&qh->qh_list); INIT_LIST_HEAD (&qh->qtd_list); + INIT_LIST_HEAD(&qh->unlink_node); /* dummy td enables safe urb queuing */ qh->dummy = ehci_qtd_alloc (ehci, flags); diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c index 402062973f03..417c10da9450 100644 --- a/drivers/usb/host/ehci-mv.c +++ b/drivers/usb/host/ehci-mv.c @@ -96,7 +96,7 @@ static const struct hc_driver mv_ehci_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * basic lifecycle operations @@ -131,7 +131,7 @@ static const struct hc_driver mv_ehci_hc_driver = { static int mv_ehci_probe(struct platform_device *pdev) { - struct mv_usb_platform_data *pdata = pdev->dev.platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); struct usb_hcd *hcd; struct ehci_hcd *ehci; struct ehci_hcd_mv *ehci_mv; @@ -166,14 +166,14 @@ static int mv_ehci_probe(struct platform_device *pdev) if (IS_ERR(ehci_mv->clk)) { dev_err(&pdev->dev, "error getting clock\n"); retval = PTR_ERR(ehci_mv->clk); - goto err_clear_drvdata; + goto err_put_hcd; } r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phyregs"); if (r == NULL) { dev_err(&pdev->dev, "no phy I/O memory resource defined\n"); retval = -ENODEV; - goto err_clear_drvdata; + goto err_put_hcd; } ehci_mv->phy_regs = devm_ioremap(&pdev->dev, r->start, @@ -181,14 +181,14 @@ static int mv_ehci_probe(struct platform_device *pdev) if (ehci_mv->phy_regs == 0) { dev_err(&pdev->dev, "failed to map phy I/O memory\n"); retval = -EFAULT; - goto err_clear_drvdata; + goto err_put_hcd; } r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "capregs"); if (!r) { dev_err(&pdev->dev, "no I/O memory resource defined\n"); retval = -ENODEV; - goto err_clear_drvdata; + goto err_put_hcd; } ehci_mv->cap_regs = devm_ioremap(&pdev->dev, r->start, @@ -196,13 +196,13 @@ static int mv_ehci_probe(struct platform_device *pdev) if (ehci_mv->cap_regs == NULL) { dev_err(&pdev->dev, "failed to map I/O memory\n"); retval = -EFAULT; - goto err_clear_drvdata; + goto err_put_hcd; } retval = mv_ehci_enable(ehci_mv); if (retval) { dev_err(&pdev->dev, "init phy error %d\n", retval); - goto err_clear_drvdata; + goto err_put_hcd; } offset = readl(ehci_mv->cap_regs) & CAPLENGTH_MASK; @@ -274,8 +274,6 @@ err_set_vbus: pdata->set_vbus(0); err_disable_clk: mv_ehci_disable(ehci_mv); -err_clear_drvdata: - platform_set_drvdata(pdev, NULL); err_put_hcd: usb_put_hcd(hcd); @@ -300,8 +298,6 @@ static int mv_ehci_remove(struct platform_device *pdev) mv_ehci_disable(ehci_mv); } - platform_set_drvdata(pdev, NULL); - usb_put_hcd(hcd); return 0; diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c index c369767b00e2..0528dc4526c8 100644 --- a/drivers/usb/host/ehci-mxc.c +++ b/drivers/usb/host/ehci-mxc.c @@ -49,7 +49,7 @@ static const struct ehci_driver_overrides ehci_mxc_overrides __initconst = { static int ehci_mxc_drv_probe(struct platform_device *pdev) { - struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data; + struct mxc_usbh_platform_data *pdata = dev_get_platdata(&pdev->dev); struct usb_hcd *hcd; struct resource *res; int irq, ret; @@ -174,7 +174,7 @@ err_alloc: static int ehci_mxc_drv_remove(struct platform_device *pdev) { - struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data; + struct mxc_usbh_platform_data *pdata = dev_get_platdata(&pdev->dev); struct usb_hcd *hcd = platform_get_drvdata(pdev); struct ehci_hcd *ehci = hcd_to_ehci(hcd); struct ehci_mxc_priv *priv = (struct ehci_mxc_priv *) ehci->priv; @@ -184,7 +184,7 @@ static int ehci_mxc_drv_remove(struct platform_device *pdev) if (pdata && pdata->exit) pdata->exit(pdev); - if (pdata->otg) + if (pdata && pdata->otg) usb_phy_shutdown(pdata->otg); clk_disable_unprepare(priv->usbclk); @@ -194,24 +194,15 @@ static int ehci_mxc_drv_remove(struct platform_device *pdev) clk_disable_unprepare(priv->phyclk); usb_put_hcd(hcd); - platform_set_drvdata(pdev, NULL); return 0; } -static void ehci_mxc_drv_shutdown(struct platform_device *pdev) -{ - struct usb_hcd *hcd = platform_get_drvdata(pdev); - - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); -} - MODULE_ALIAS("platform:mxc-ehci"); static struct platform_driver ehci_mxc_driver = { .probe = ehci_mxc_drv_probe, .remove = ehci_mxc_drv_remove, - .shutdown = ehci_mxc_drv_shutdown, + .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "mxc-ehci", }, diff --git a/drivers/usb/host/ehci-octeon.c b/drivers/usb/host/ehci-octeon.c index a89750fff4ff..ab0397e4d8f3 100644 --- a/drivers/usb/host/ehci-octeon.c +++ b/drivers/usb/host/ehci-octeon.c @@ -51,7 +51,7 @@ static const struct hc_driver ehci_octeon_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * basic lifecycle operations @@ -182,8 +182,6 @@ static int ehci_octeon_drv_remove(struct platform_device *pdev) release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); - platform_set_drvdata(pdev, NULL); - return 0; } diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index 16d7150e8557..78b01fa475bb 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -100,7 +100,7 @@ static const struct ehci_driver_overrides ehci_omap_overrides __initdata = { static int ehci_hcd_omap_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct usbhs_omap_platform_data *pdata = dev->platform_data; + struct usbhs_omap_platform_data *pdata = dev_get_platdata(dev); struct resource *res; struct usb_hcd *hcd; void __iomem *regs; @@ -119,7 +119,7 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) /* For DT boot, get platform data from parent. i.e. usbhshost */ if (dev->of_node) { - pdata = dev->parent->platform_data; + pdata = dev_get_platdata(dev->parent); dev->platform_data = pdata; } @@ -187,6 +187,12 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) } omap->phy[i] = phy; + + if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_PHY) { + usb_phy_init(omap->phy[i]); + /* bring PHY out of suspend */ + usb_phy_set_suspend(omap->phy[i], 0); + } } pm_runtime_enable(dev); @@ -211,13 +217,14 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) } /* - * Bring PHYs out of reset. + * Bring PHYs out of reset for non PHY modes. * Even though HSIC mode is a PHY-less mode, the reset * line exists between the chips and can be modelled * as a PHY device for reset control. */ for (i = 0; i < omap->nports; i++) { - if (!omap->phy[i]) + if (!omap->phy[i] || + pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_PHY) continue; usb_phy_init(omap->phy[i]); @@ -271,14 +278,6 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev) return 0; } -static void ehci_hcd_omap_shutdown(struct platform_device *pdev) -{ - struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev); - - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); -} - static const struct of_device_id omap_ehci_dt_ids[] = { { .compatible = "ti,ehci-omap" }, { } @@ -289,12 +288,12 @@ MODULE_DEVICE_TABLE(of, omap_ehci_dt_ids); static struct platform_driver ehci_hcd_omap_driver = { .probe = ehci_hcd_omap_probe, .remove = ehci_hcd_omap_remove, - .shutdown = ehci_hcd_omap_shutdown, + .shutdown = usb_hcd_platform_shutdown, /*.suspend = ehci_hcd_omap_suspend, */ /*.resume = ehci_hcd_omap_resume, */ .driver = { .name = hcd_name, - .of_match_table = of_match_ptr(omap_ehci_dt_ids), + .of_match_table = omap_ehci_dt_ids, } }; diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index efbc588b48c5..d1dfb9db5b42 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -139,7 +139,7 @@ ehci_orion_conf_mbus_windows(struct usb_hcd *hcd, static int ehci_orion_drv_probe(struct platform_device *pdev) { - struct orion_ehci_data *pd = pdev->dev.platform_data; + struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev); const struct mbus_dram_target_info *dram; struct resource *res; struct usb_hcd *hcd; @@ -303,7 +303,7 @@ static struct platform_driver ehci_orion_driver = { .driver = { .name = "orion-ehci", .owner = THIS_MODULE, - .of_match_table = of_match_ptr(ehci_orion_dt_ids), + .of_match_table = ehci_orion_dt_ids, }, }; diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 595d210655b6..6bd299e61f58 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -315,53 +315,11 @@ done: * Also they depend on separate root hub suspend/resume. */ -static bool usb_is_intel_switchable_ehci(struct pci_dev *pdev) -{ - return pdev->class == PCI_CLASS_SERIAL_USB_EHCI && - pdev->vendor == PCI_VENDOR_ID_INTEL && - (pdev->device == 0x1E26 || - pdev->device == 0x8C2D || - pdev->device == 0x8C26 || - pdev->device == 0x9C26); -} - -static void ehci_enable_xhci_companion(void) -{ - struct pci_dev *companion = NULL; - - /* The xHCI and EHCI controllers are not on the same PCI slot */ - for_each_pci_dev(companion) { - if (!usb_is_intel_switchable_xhci(companion)) - continue; - usb_enable_xhci_ports(companion); - return; - } -} - static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); - /* The BIOS on systems with the Intel Panther Point chipset may or may - * not support xHCI natively. That means that during system resume, it - * may switch the ports back to EHCI so that users can use their - * keyboard to select a kernel from GRUB after resume from hibernate. - * - * The BIOS is supposed to remember whether the OS had xHCI ports - * enabled before resume, and switch the ports back to xHCI when the - * BIOS/OS semaphore is written, but we all know we can't trust BIOS - * writers. - * - * Unconditionally switch the ports back to xHCI after a system resume. - * We can't tell whether the EHCI or xHCI controller will be resumed - * first, so we have to do the port switchover in both drivers. Writing - * a '1' to the port switchover registers should have no effect if the - * port was already switched over. - */ - if (usb_is_intel_switchable_ehci(pdev)) - ehci_enable_xhci_companion(); - if (ehci_resume(hcd, hibernated) != 0) (void) ehci_pci_reinit(ehci, pdev); return 0; diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index f47f2594c9d4..f6b790ca8cf2 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -39,7 +39,7 @@ static const char hcd_name[] = "ehci-platform"; static int ehci_platform_reset(struct usb_hcd *hcd) { struct platform_device *pdev = to_platform_device(hcd->self.controller); - struct usb_ehci_pdata *pdata = pdev->dev.platform_data; + struct usb_ehci_pdata *pdata = dev_get_platdata(&pdev->dev); struct ehci_hcd *ehci = hcd_to_ehci(hcd); int retval; @@ -48,6 +48,12 @@ static int ehci_platform_reset(struct usb_hcd *hcd) ehci->big_endian_desc = pdata->big_endian_desc; ehci->big_endian_mmio = pdata->big_endian_mmio; + if (pdata->pre_setup) { + retval = pdata->pre_setup(hcd); + if (retval < 0) + return retval; + } + ehci->caps = hcd->regs + pdata->caps_offset; retval = ehci_setup(hcd); if (retval) @@ -81,14 +87,14 @@ static int ehci_platform_probe(struct platform_device *dev) * use reasonable defaults so platforms don't have to provide these. * with DT probing on ARM, none of these are set. */ - if (!dev->dev.platform_data) + if (!dev_get_platdata(&dev->dev)) dev->dev.platform_data = &ehci_platform_defaults; if (!dev->dev.dma_mask) dev->dev.dma_mask = &dev->dev.coherent_dma_mask; if (!dev->dev.coherent_dma_mask) dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); - pdata = dev->dev.platform_data; + pdata = dev_get_platdata(&dev->dev); irq = platform_get_irq(dev, 0); if (irq < 0) { @@ -142,11 +148,10 @@ err_power: static int ehci_platform_remove(struct platform_device *dev) { struct usb_hcd *hcd = platform_get_drvdata(dev); - struct usb_ehci_pdata *pdata = dev->dev.platform_data; + struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev); usb_remove_hcd(hcd); usb_put_hcd(hcd); - platform_set_drvdata(dev, NULL); if (pdata->power_off) pdata->power_off(dev); @@ -162,7 +167,7 @@ static int ehci_platform_remove(struct platform_device *dev) static int ehci_platform_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - struct usb_ehci_pdata *pdata = dev->platform_data; + struct usb_ehci_pdata *pdata = dev_get_platdata(dev); struct platform_device *pdev = container_of(dev, struct platform_device, dev); bool do_wakeup = device_may_wakeup(dev); @@ -179,7 +184,7 @@ static int ehci_platform_suspend(struct device *dev) static int ehci_platform_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - struct usb_ehci_pdata *pdata = dev->platform_data; + struct usb_ehci_pdata *pdata = dev_get_platdata(dev); struct platform_device *pdev = container_of(dev, struct platform_device, dev); @@ -224,7 +229,7 @@ static struct platform_driver ehci_platform_driver = { .owner = THIS_MODULE, .name = "ehci-platform", .pm = &ehci_platform_pm_ops, - .of_match_table = of_match_ptr(vt8500_ehci_ids), + .of_match_table = vt8500_ehci_ids, } }; diff --git a/drivers/usb/host/ehci-pmcmsp.c b/drivers/usb/host/ehci-pmcmsp.c index 363890ee41d2..893b707f0000 100644 --- a/drivers/usb/host/ehci-pmcmsp.c +++ b/drivers/usb/host/ehci-pmcmsp.c @@ -286,13 +286,12 @@ static const struct hc_driver ehci_msp_hc_driver = { #else .irq = ehci_irq, #endif - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * basic lifecycle operations */ - .reset = ehci_msp_setup, - .start = ehci_run, + .reset = ehci_msp_setup, .shutdown = ehci_shutdown, .start = ehci_run, .stop = ehci_stop, diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c index 56dc732bf451..6cc5567bf9c8 100644 --- a/drivers/usb/host/ehci-ppc-of.c +++ b/drivers/usb/host/ehci-ppc-of.c @@ -28,7 +28,7 @@ static const struct hc_driver ehci_ppc_of_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * basic lifecycle operations @@ -180,14 +180,12 @@ err_irq: static int ehci_hcd_ppc_of_remove(struct platform_device *op) { - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); + struct usb_hcd *hcd = platform_get_drvdata(op); struct ehci_hcd *ehci = hcd_to_ehci(hcd); struct device_node *np; struct resource res; - dev_set_drvdata(&op->dev, NULL); - dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n"); usb_remove_hcd(hcd); @@ -217,15 +215,6 @@ static int ehci_hcd_ppc_of_remove(struct platform_device *op) } -static void ehci_hcd_ppc_of_shutdown(struct platform_device *op) -{ - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); - - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); -} - - static const struct of_device_id ehci_hcd_ppc_of_match[] = { { .compatible = "usb-ehci", @@ -238,7 +227,7 @@ MODULE_DEVICE_TABLE(of, ehci_hcd_ppc_of_match); static struct platform_driver ehci_hcd_ppc_of_driver = { .probe = ehci_hcd_ppc_of_probe, .remove = ehci_hcd_ppc_of_remove, - .shutdown = ehci_hcd_ppc_of_shutdown, + .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "ppc-of-ehci", .owner = THIS_MODULE, diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c index fd983771b025..8188542ba17e 100644 --- a/drivers/usb/host/ehci-ps3.c +++ b/drivers/usb/host/ehci-ps3.c @@ -71,7 +71,7 @@ static const struct hc_driver ps3_ehci_hc_driver = { .product_desc = "PS3 EHCI Host Controller", .hcd_priv_size = sizeof(struct ehci_hcd), .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, .reset = ps3_ehci_hc_reset, .start = ehci_run, .stop = ehci_stop, diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index d34b399b78e2..e321804c3475 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -168,13 +168,13 @@ static void ehci_clear_tt_buffer(struct ehci_hcd *ehci, struct ehci_qh *qh, * Note: this routine is never called for Isochronous transfers. */ if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) { -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) struct usb_device *tt = urb->dev->tt->hub; dev_dbg(&tt->dev, "clear tt buffer port %d, a%d ep%d t%08x\n", urb->dev->ttport, urb->dev->devnum, usb_pipeendpoint(urb->pipe), token); -#endif /* DEBUG */ +#endif /* DEBUG || CONFIG_DYNAMIC_DEBUG */ if (!ehci_is_TDI(ehci) || urb->dev->tt->hub != ehci_to_hcd(ehci)->self.root_hub) { @@ -240,13 +240,6 @@ static int qtd_copy_status ( } else { /* unknown */ status = -EPROTO; } - - ehci_vdbg (ehci, - "dev%d ep%d%s qtd token %08x --> status %d\n", - usb_pipedevice (urb->pipe), - usb_pipeendpoint (urb->pipe), - usb_pipein (urb->pipe) ? "in" : "out", - token, status); } return status; @@ -254,8 +247,6 @@ static int qtd_copy_status ( static void ehci_urb_done(struct ehci_hcd *ehci, struct urb *urb, int status) -__releases(ehci->lock) -__acquires(ehci->lock) { if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) { /* ... update hc-wide periodic stats */ @@ -281,11 +272,8 @@ __acquires(ehci->lock) urb->actual_length, urb->transfer_buffer_length); #endif - /* complete() can reenter this HCD */ usb_hcd_unlink_urb_from_ep(ehci_to_hcd(ehci), urb); - spin_unlock (&ehci->lock); usb_hcd_giveback_urb(ehci_to_hcd(ehci), urb, status); - spin_lock (&ehci->lock); } static int qh_schedule (struct ehci_hcd *ehci, struct ehci_qh *qh); @@ -1144,6 +1132,109 @@ submit_async ( } /*-------------------------------------------------------------------------*/ +#ifdef CONFIG_USB_HCD_TEST_MODE +/* + * This function creates the qtds and submits them for the + * SINGLE_STEP_SET_FEATURE Test. + * This is done in two parts: first SETUP req for GetDesc is sent then + * 15 seconds later, the IN stage for GetDesc starts to req data from dev + * + * is_setup : i/p arguement decides which of the two stage needs to be + * performed; TRUE - SETUP and FALSE - IN+STATUS + * Returns 0 if success + */ +static int submit_single_step_set_feature( + struct usb_hcd *hcd, + struct urb *urb, + int is_setup +) { + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct list_head qtd_list; + struct list_head *head; + + struct ehci_qtd *qtd, *qtd_prev; + dma_addr_t buf; + int len, maxpacket; + u32 token; + + INIT_LIST_HEAD(&qtd_list); + head = &qtd_list; + + /* URBs map to sequences of QTDs: one logical transaction */ + qtd = ehci_qtd_alloc(ehci, GFP_KERNEL); + if (unlikely(!qtd)) + return -1; + list_add_tail(&qtd->qtd_list, head); + qtd->urb = urb; + + token = QTD_STS_ACTIVE; + token |= (EHCI_TUNE_CERR << 10); + + len = urb->transfer_buffer_length; + /* + * Check if the request is to perform just the SETUP stage (getDesc) + * as in SINGLE_STEP_SET_FEATURE test, DATA stage (IN) happens + * 15 secs after the setup + */ + if (is_setup) { + /* SETUP pid */ + qtd_fill(ehci, qtd, urb->setup_dma, + sizeof(struct usb_ctrlrequest), + token | (2 /* "setup" */ << 8), 8); + + submit_async(ehci, urb, &qtd_list, GFP_ATOMIC); + return 0; /*Return now; we shall come back after 15 seconds*/ + } + + /* + * IN: data transfer stage: buffer setup : start the IN txn phase for + * the get_Desc SETUP which was sent 15seconds back + */ + token ^= QTD_TOGGLE; /*We need to start IN with DATA-1 Pid-sequence*/ + buf = urb->transfer_dma; + + token |= (1 /* "in" */ << 8); /*This is IN stage*/ + + maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, 0)); + + qtd_fill(ehci, qtd, buf, len, token, maxpacket); + + /* + * Our IN phase shall always be a short read; so keep the queue running + * and let it advance to the next qtd which zero length OUT status + */ + qtd->hw_alt_next = EHCI_LIST_END(ehci); + + /* STATUS stage for GetDesc control request */ + token ^= 0x0100; /* "in" <--> "out" */ + token |= QTD_TOGGLE; /* force DATA1 */ + + qtd_prev = qtd; + qtd = ehci_qtd_alloc(ehci, GFP_ATOMIC); + if (unlikely(!qtd)) + goto cleanup; + qtd->urb = urb; + qtd_prev->hw_next = QTD_NEXT(ehci, qtd->qtd_dma); + list_add_tail(&qtd->qtd_list, head); + + /* dont fill any data in such packets */ + qtd_fill(ehci, qtd, 0, 0, token, 0); + + /* by default, enable interrupt on urb completion */ + if (likely(!(urb->transfer_flags & URB_NO_INTERRUPT))) + qtd->hw_token |= cpu_to_hc32(ehci, QTD_IOC); + + submit_async(ehci, urb, &qtd_list, GFP_KERNEL); + + return 0; + +cleanup: + qtd_list_free(ehci, urb, head); + return -1; +} +#endif /* CONFIG_USB_HCD_TEST_MODE */ + +/*-------------------------------------------------------------------------*/ static void single_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh) { diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c index 379037f51a2f..7c3de95c7054 100644 --- a/drivers/usb/host/ehci-s5p.c +++ b/drivers/usb/host/ehci-s5p.c @@ -50,6 +50,8 @@ struct s5p_ehci_hcd { struct s5p_ehci_platdata *pdata; }; +static struct s5p_ehci_platdata empty_platdata; + #define to_s5p_ehci(hcd) (struct s5p_ehci_hcd *)(hcd_to_ehci(hcd)->priv) static void s5p_setup_vbus_gpio(struct platform_device *pdev) @@ -73,7 +75,7 @@ static void s5p_setup_vbus_gpio(struct platform_device *pdev) static int s5p_ehci_probe(struct platform_device *pdev) { - struct s5p_ehci_platdata *pdata = pdev->dev.platform_data; + struct s5p_ehci_platdata *pdata = dev_get_platdata(&pdev->dev); struct s5p_ehci_hcd *s5p_ehci; struct usb_hcd *hcd; struct ehci_hcd *ehci; @@ -101,6 +103,13 @@ static int s5p_ehci_probe(struct platform_device *pdev) return -ENOMEM; } s5p_ehci = to_s5p_ehci(hcd); + + if (of_device_is_compatible(pdev->dev.of_node, + "samsung,exynos5440-ehci")) { + s5p_ehci->pdata = &empty_platdata; + goto skip_phy; + } + phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); if (IS_ERR(phy)) { /* Fallback to pdata */ @@ -116,6 +125,8 @@ static int s5p_ehci_probe(struct platform_device *pdev) s5p_ehci->otg = phy->otg; } +skip_phy: + s5p_ehci->clk = devm_clk_get(&pdev->dev, "usbhost"); if (IS_ERR(s5p_ehci->clk)) { @@ -209,14 +220,6 @@ static int s5p_ehci_remove(struct platform_device *pdev) return 0; } -static void s5p_ehci_shutdown(struct platform_device *pdev) -{ - struct usb_hcd *hcd = platform_get_drvdata(pdev); - - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); -} - #ifdef CONFIG_PM static int s5p_ehci_suspend(struct device *dev) { @@ -277,6 +280,7 @@ static const struct dev_pm_ops s5p_ehci_pm_ops = { #ifdef CONFIG_OF static const struct of_device_id exynos_ehci_match[] = { { .compatible = "samsung,exynos4210-ehci" }, + { .compatible = "samsung,exynos5440-ehci" }, {}, }; MODULE_DEVICE_TABLE(of, exynos_ehci_match); @@ -285,7 +289,7 @@ MODULE_DEVICE_TABLE(of, exynos_ehci_match); static struct platform_driver s5p_ehci_driver = { .probe = s5p_ehci_probe, .remove = s5p_ehci_remove, - .shutdown = s5p_ehci_shutdown, + .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "s5p-ehci", .owner = THIS_MODULE, diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index acff5b8f6e89..85dd24ed97a6 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -169,7 +169,7 @@ periodic_usecs (struct ehci_hcd *ehci, unsigned frame, unsigned uframe) break; } } -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) if (usecs > ehci->uframe_periodic_max) ehci_err (ehci, "uframe %d sched overrun: %d usecs\n", frame * 8 + uframe, usecs); @@ -213,7 +213,7 @@ static inline unsigned char tt_start_uframe(struct ehci_hcd *ehci, __hc32 mask) } static const unsigned char -max_tt_usecs[] = { 125, 125, 125, 125, 125, 125, 125, 25 }; +max_tt_usecs[] = { 125, 125, 125, 125, 125, 125, 30, 0 }; /* carryover low/fullspeed bandwidth that crosses uframe boundries */ static inline void carryover_tt_bandwidth(unsigned short tt_usecs[8]) @@ -327,17 +327,8 @@ static int tt_available ( periodic_tt_usecs (ehci, dev, frame, tt_usecs); - ehci_vdbg(ehci, "tt frame %d check %d usecs start uframe %d in" - " schedule %d/%d/%d/%d/%d/%d/%d/%d\n", - frame, usecs, uframe, - tt_usecs[0], tt_usecs[1], tt_usecs[2], tt_usecs[3], - tt_usecs[4], tt_usecs[5], tt_usecs[6], tt_usecs[7]); - - if (max_tt_usecs[uframe] <= tt_usecs[uframe]) { - ehci_vdbg(ehci, "frame %d uframe %d fully scheduled\n", - frame, uframe); + if (max_tt_usecs[uframe] <= tt_usecs[uframe]) return 0; - } /* special case for isoc transfers larger than 125us: * the first and each subsequent fully used uframe @@ -348,13 +339,8 @@ static int tt_available ( int ufs = (usecs / 125); int i; for (i = uframe; i < (uframe + ufs) && i < 8; i++) - if (0 < tt_usecs[i]) { - ehci_vdbg(ehci, - "multi-uframe xfer can't fit " - "in frame %d uframe %d\n", - frame, i); + if (0 < tt_usecs[i]) return 0; - } } tt_usecs[uframe] += usecs; @@ -362,12 +348,8 @@ static int tt_available ( carryover_tt_bandwidth(tt_usecs); /* fail if the carryover pushed bw past the last uframe's limit */ - if (max_tt_usecs[7] < tt_usecs[7]) { - ehci_vdbg(ehci, - "tt unavailable usecs %d frame %d uframe %d\n", - usecs, frame, uframe); + if (max_tt_usecs[7] < tt_usecs[7]) return 0; - } } return 1; @@ -601,12 +583,29 @@ static void qh_unlink_periodic(struct ehci_hcd *ehci, struct ehci_qh *qh) list_del(&qh->intr_node); } +static void cancel_unlink_wait_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) +{ + if (qh->qh_state != QH_STATE_LINKED || + list_empty(&qh->unlink_node)) + return; + + list_del_init(&qh->unlink_node); + + /* + * TODO: disable the event of EHCI_HRTIMER_START_UNLINK_INTR for + * avoiding unnecessary CPU wakeup + */ +} + static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) { /* If the QH isn't linked then there's nothing we can do. */ if (qh->qh_state != QH_STATE_LINKED) return; + /* if the qh is waiting for unlink, cancel it now */ + cancel_unlink_wait_intr(ehci, qh); + qh_unlink_periodic (ehci, qh); /* Make sure the unlinks are visible before starting the timer */ @@ -632,6 +631,27 @@ static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) } } +/* + * It is common only one intr URB is scheduled on one qh, and + * given complete() is run in tasklet context, introduce a bit + * delay to avoid unlink qh too early. + */ +static void start_unlink_intr_wait(struct ehci_hcd *ehci, + struct ehci_qh *qh) +{ + qh->unlink_cycle = ehci->intr_unlink_wait_cycle; + + /* New entries go at the end of the intr_unlink_wait list */ + list_add_tail(&qh->unlink_node, &ehci->intr_unlink_wait); + + if (ehci->rh_state < EHCI_RH_RUNNING) + ehci_handle_start_intr_unlinks(ehci); + else if (ehci->intr_unlink_wait.next == &qh->unlink_node) { + ehci_enable_event(ehci, EHCI_HRTIMER_START_UNLINK_INTR, true); + ++ehci->intr_unlink_wait_cycle; + } +} + static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) { struct ehci_qh_hw *hw = qh->hw; @@ -646,6 +666,10 @@ static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) /* reschedule QH iff another request is queued */ if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) { rc = qh_schedule(ehci, qh); + if (rc == 0) { + qh_refresh(ehci, qh); + qh_link_periodic(ehci, qh); + } /* An error here likely indicates handshake failure * or no space left in the schedule. Neither fault @@ -653,9 +677,10 @@ static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) * * FIXME kill the now-dysfunctional queued urbs */ - if (rc != 0) + else { ehci_err(ehci, "can't reschedule qh %p, err %d\n", qh, rc); + } } /* maybe turn off periodic schedule */ @@ -884,6 +909,9 @@ static int intr_submit ( if (qh->qh_state == QH_STATE_IDLE) { qh_refresh(ehci, qh); qh_link_periodic(ehci, qh); + } else { + /* cancel unlink wait for the qh */ + cancel_unlink_wait_intr(ehci, qh); } /* ... update usbfs periodic stats */ @@ -919,9 +947,11 @@ static void scan_intr(struct ehci_hcd *ehci) * in qh_unlink_periodic(). */ temp = qh_completions(ehci, qh); - if (unlikely(temp || (list_empty(&qh->qtd_list) && - qh->qh_state == QH_STATE_LINKED))) + if (unlikely(temp)) start_unlink_intr(ehci, qh); + else if (unlikely(list_empty(&qh->qtd_list) && + qh->qh_state == QH_STATE_LINKED)) + start_unlink_intr_wait(ehci, qh); } } } @@ -1386,21 +1416,20 @@ iso_stream_schedule ( /* Behind the scheduling threshold? */ if (unlikely(start < next)) { + unsigned now2 = (now - base) & (mod - 1); /* USB_ISO_ASAP: Round up to the first available slot */ if (urb->transfer_flags & URB_ISO_ASAP) start += (next - start + period - 1) & -period; /* - * Not ASAP: Use the next slot in the stream. If - * the entire URB falls before the threshold, fail. + * Not ASAP: Use the next slot in the stream, + * no matter what. */ - else if (start + span - period < next) { - ehci_dbg(ehci, "iso urb late %p (%u+%u < %u)\n", + else if (start + span - period < now2) { + ehci_dbg(ehci, "iso underrun %p (%u+%u < %u)\n", urb, start + base, - span - period, next + base); - status = -EXDEV; - goto fail; + span - period, now2 + base); } } @@ -1569,16 +1598,9 @@ static void itd_link_urb( next_uframe = stream->next_uframe & (mod - 1); - if (unlikely (list_empty(&stream->td_list))) { + if (unlikely (list_empty(&stream->td_list))) ehci_to_hcd(ehci)->self.bandwidth_allocated += stream->bandwidth; - ehci_vdbg (ehci, - "schedule devp %s ep%d%s-iso period %d start %d.%d\n", - urb->dev->devpath, stream->bEndpointAddress & 0x0f, - (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out", - urb->interval, - next_uframe >> 3, next_uframe & 0x7); - } if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { if (ehci->amd_pll_fix == 1) @@ -1713,14 +1735,9 @@ static bool itd_complete(struct ehci_hcd *ehci, struct ehci_itd *itd) usb_amd_quirk_pll_enable(); } - if (unlikely(list_is_singular(&stream->td_list))) { + if (unlikely(list_is_singular(&stream->td_list))) ehci_to_hcd(ehci)->self.bandwidth_allocated -= stream->bandwidth; - ehci_vdbg (ehci, - "deschedule devp %s ep%d%s-iso\n", - dev->devpath, stream->bEndpointAddress & 0x0f, - (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out"); - } done: itd->urb = NULL; @@ -1978,17 +1995,10 @@ static void sitd_link_urb( next_uframe = stream->next_uframe; - if (list_empty(&stream->td_list)) { + if (list_empty(&stream->td_list)) /* usbfs ignores TT bandwidth */ ehci_to_hcd(ehci)->self.bandwidth_allocated += stream->bandwidth; - ehci_vdbg (ehci, - "sched devp %s ep%d%s-iso [%d] %dms/%04x\n", - urb->dev->devpath, stream->bEndpointAddress & 0x0f, - (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out", - (next_uframe >> 3) & (ehci->periodic_size - 1), - stream->interval, hc32_to_cpu(ehci, stream->splits)); - } if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { if (ehci->amd_pll_fix == 1) @@ -2102,14 +2112,9 @@ static bool sitd_complete(struct ehci_hcd *ehci, struct ehci_sitd *sitd) usb_amd_quirk_pll_enable(); } - if (list_is_singular(&stream->td_list)) { + if (list_is_singular(&stream->td_list)) ehci_to_hcd(ehci)->self.bandwidth_allocated -= stream->bandwidth; - ehci_vdbg (ehci, - "deschedule devp %s ep%d%s-iso\n", - dev->devpath, stream->bEndpointAddress & 0x0f, - (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out"); - } done: sitd->urb = NULL; diff --git a/drivers/usb/host/ehci-sead3.c b/drivers/usb/host/ehci-sead3.c index f55477c5a1be..8a734498079b 100644 --- a/drivers/usb/host/ehci-sead3.c +++ b/drivers/usb/host/ehci-sead3.c @@ -55,7 +55,7 @@ const struct hc_driver ehci_sead3_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * basic lifecycle operations @@ -140,7 +140,6 @@ static int ehci_hcd_sead3_drv_remove(struct platform_device *pdev) usb_remove_hcd(hcd); usb_put_hcd(hcd); - platform_set_drvdata(pdev, NULL); return 0; } diff --git a/drivers/usb/host/ehci-sh.c b/drivers/usb/host/ehci-sh.c index b44d716ddc82..dc899eb2b861 100644 --- a/drivers/usb/host/ehci-sh.c +++ b/drivers/usb/host/ehci-sh.c @@ -36,7 +36,7 @@ static const struct hc_driver ehci_sh_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_USB2 | HCD_MEMORY, + .flags = HCD_USB2 | HCD_MEMORY | HCD_BH, /* * basic lifecycle operations @@ -104,7 +104,7 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev) goto fail_create_hcd; } - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); /* initialize hcd */ hcd = usb_create_hcd(&ehci_sh_hc_driver, &pdev->dev, @@ -176,7 +176,6 @@ static int ehci_hcd_sh_remove(struct platform_device *pdev) usb_remove_hcd(hcd); usb_put_hcd(hcd); - platform_set_drvdata(pdev, NULL); clk_disable(priv->fclk); clk_disable(priv->iclk); diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c index bd3e5cbc6240..1cf0adba3fc8 100644 --- a/drivers/usb/host/ehci-spear.c +++ b/drivers/usb/host/ehci-spear.c @@ -148,10 +148,6 @@ static int spear_ehci_hcd_drv_remove(struct platform_device *pdev) struct usb_hcd *hcd = platform_get_drvdata(pdev); struct spear_ehci *sehci = to_spear_ehci(hcd); - if (!hcd) - return 0; - if (in_interrupt()) - BUG(); usb_remove_hcd(hcd); if (sehci->clk) @@ -174,7 +170,7 @@ static struct platform_driver spear_ehci_hcd_driver = { .name = "spear-ehci", .bus = &platform_bus_type, .pm = &ehci_spear_pm_ops, - .of_match_table = of_match_ptr(spear_ehci_id_table), + .of_match_table = spear_ehci_id_table, } }; diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 59d111bf44a9..78fa76da3324 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -17,59 +17,56 @@ */ #include <linux/clk.h> +#include <linux/clk/tegra.h> +#include <linux/dma-mapping.h> #include <linux/err.h> -#include <linux/platform_device.h> -#include <linux/platform_data/tegra_usb.h> -#include <linux/irq.h> -#include <linux/usb/otg.h> #include <linux/gpio.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/module.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/of_gpio.h> +#include <linux/platform_device.h> #include <linux/pm_runtime.h> +#include <linux/slab.h> #include <linux/usb/ehci_def.h> #include <linux/usb/tegra_usb_phy.h> -#include <linux/clk/tegra.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> +#include <linux/usb/otg.h> + +#include "ehci.h" #define TEGRA_USB_BASE 0xC5000000 #define TEGRA_USB2_BASE 0xC5004000 #define TEGRA_USB3_BASE 0xC5008000 -/* PORTSC registers */ -#define TEGRA_USB_PORTSC1 0x184 -#define TEGRA_USB_PORTSC1_PTS(x) (((x) & 0x3) << 30) -#define TEGRA_USB_PORTSC1_PHCD (1 << 23) +#define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E) #define TEGRA_USB_DMA_ALIGN 32 +#define DRIVER_DESC "Tegra EHCI driver" +#define DRV_NAME "tegra-ehci" + +static struct hc_driver __read_mostly tegra_ehci_hc_driver; + +struct tegra_ehci_soc_config { + bool has_hostpc; +}; + +static int (*orig_hub_control)(struct usb_hcd *hcd, + u16 typeReq, u16 wValue, u16 wIndex, + char *buf, u16 wLength); + struct tegra_ehci_hcd { - struct ehci_hcd *ehci; struct tegra_usb_phy *phy; struct clk *clk; - struct usb_phy *transceiver; - int host_resumed; int port_resuming; bool needs_double_reset; enum tegra_usb_phy_port_speed port_speed; }; -static void tegra_ehci_power_up(struct usb_hcd *hcd) -{ - struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); - - clk_prepare_enable(tegra->clk); - usb_phy_set_suspend(hcd->phy, 0); - tegra->host_resumed = 1; -} - -static void tegra_ehci_power_down(struct usb_hcd *hcd) -{ - struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); - - tegra->host_resumed = 0; - usb_phy_set_suspend(hcd->phy, 1); - clk_disable_unprepare(tegra->clk); -} - static int tegra_ehci_internal_port_reset( struct ehci_hcd *ehci, u32 __iomem *portsc_reg @@ -144,8 +141,8 @@ static int tegra_ehci_hub_control( u16 wLength ) { - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct tegra_ehci_hcd *tegra = (struct tegra_ehci_hcd *)ehci->priv; u32 __iomem *status_reg; u32 temp; unsigned long flags; @@ -179,7 +176,7 @@ static int tegra_ehci_hub_control( * If a transaction is in progress, there may be a delay in * suspending the port. Poll until the port is suspended. */ - if (handshake(ehci, status_reg, PORT_SUSPEND, + if (ehci_handshake(ehci, status_reg, PORT_SUSPEND, PORT_SUSPEND, 5000)) pr_err("%s: timeout waiting for SUSPEND\n", __func__); @@ -227,9 +224,9 @@ static int tegra_ehci_hub_control( spin_lock_irqsave(&ehci->lock, flags); /* Poll until the controller clears RESUME and SUSPEND */ - if (handshake(ehci, status_reg, PORT_RESUME, 0, 2000)) + if (ehci_handshake(ehci, status_reg, PORT_RESUME, 0, 2000)) pr_err("%s: timeout waiting for RESUME\n", __func__); - if (handshake(ehci, status_reg, PORT_SUSPEND, 0, 2000)) + if (ehci_handshake(ehci, status_reg, PORT_SUSPEND, 0, 2000)) pr_err("%s: timeout waiting for SUSPEND\n", __func__); ehci->reset_done[wIndex-1] = 0; @@ -242,58 +239,13 @@ static int tegra_ehci_hub_control( spin_unlock_irqrestore(&ehci->lock, flags); /* Handle the hub control events here */ - return ehci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength); + return orig_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength); + done: spin_unlock_irqrestore(&ehci->lock, flags); return retval; } -static void tegra_ehci_restart(struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - - ehci_reset(ehci); - - /* setup the frame list and Async q heads */ - ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list); - ehci_writel(ehci, (u32)ehci->async->qh_dma, &ehci->regs->async_next); - /* setup the command register and set the controller in RUN mode */ - ehci->command &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET); - ehci->command |= CMD_RUN; - ehci_writel(ehci, ehci->command, &ehci->regs->command); - - down_write(&ehci_cf_port_reset_rwsem); - ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); - /* flush posted writes */ - ehci_readl(ehci, &ehci->regs->command); - up_write(&ehci_cf_port_reset_rwsem); -} - -static void tegra_ehci_shutdown(struct usb_hcd *hcd) -{ - struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); - - /* ehci_shutdown touches the USB controller registers, make sure - * controller has clocks to it */ - if (!tegra->host_resumed) - tegra_ehci_power_up(hcd); - - ehci_shutdown(hcd); -} - -static int tegra_ehci_setup(struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - - /* EHCI registers start at offset 0x100 */ - ehci->caps = hcd->regs + 0x100; - - /* switch to host mode */ - hcd->has_tt = 1; - - return ehci_setup(hcd); -} - struct dma_aligned_buffer { void *kmalloc_ptr; void *old_xfer_buffer; @@ -373,286 +325,38 @@ static void tegra_ehci_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) free_dma_aligned_buffer(urb); } -static const struct hc_driver tegra_ehci_hc_driver = { - .description = hcd_name, - .product_desc = "Tegra EHCI Host Controller", - .hcd_priv_size = sizeof(struct ehci_hcd), - .flags = HCD_USB2 | HCD_MEMORY, - - /* standard ehci functions */ - .irq = ehci_irq, - .start = ehci_run, - .stop = ehci_stop, - .urb_enqueue = ehci_urb_enqueue, - .urb_dequeue = ehci_urb_dequeue, - .endpoint_disable = ehci_endpoint_disable, - .endpoint_reset = ehci_endpoint_reset, - .get_frame_number = ehci_get_frame, - .hub_status_data = ehci_hub_status_data, - .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, - .relinquish_port = ehci_relinquish_port, - .port_handed_over = ehci_port_handed_over, - - /* modified ehci functions for tegra */ - .reset = tegra_ehci_setup, - .shutdown = tegra_ehci_shutdown, - .map_urb_for_dma = tegra_ehci_map_urb_for_dma, - .unmap_urb_for_dma = tegra_ehci_unmap_urb_for_dma, - .hub_control = tegra_ehci_hub_control, -#ifdef CONFIG_PM - .bus_suspend = ehci_bus_suspend, - .bus_resume = ehci_bus_resume, -#endif +static const struct tegra_ehci_soc_config tegra30_soc_config = { + .has_hostpc = true, }; -static int setup_vbus_gpio(struct platform_device *pdev, - struct tegra_ehci_platform_data *pdata) -{ - int err = 0; - int gpio; - - gpio = pdata->vbus_gpio; - if (!gpio_is_valid(gpio)) - gpio = of_get_named_gpio(pdev->dev.of_node, - "nvidia,vbus-gpio", 0); - if (!gpio_is_valid(gpio)) - return 0; - - err = gpio_request(gpio, "vbus_gpio"); - if (err) { - dev_err(&pdev->dev, "can't request vbus gpio %d", gpio); - return err; - } - err = gpio_direction_output(gpio, 1); - if (err) { - dev_err(&pdev->dev, "can't enable vbus\n"); - return err; - } - - return err; -} - -#ifdef CONFIG_PM - -static int controller_suspend(struct device *dev) -{ - struct tegra_ehci_hcd *tegra = - platform_get_drvdata(to_platform_device(dev)); - struct ehci_hcd *ehci = tegra->ehci; - struct usb_hcd *hcd = ehci_to_hcd(ehci); - struct ehci_regs __iomem *hw = ehci->regs; - unsigned long flags; - - if (time_before(jiffies, ehci->next_statechange)) - msleep(10); - - ehci_halt(ehci); - - spin_lock_irqsave(&ehci->lock, flags); - tegra->port_speed = (readl(&hw->port_status[0]) >> 26) & 0x3; - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - spin_unlock_irqrestore(&ehci->lock, flags); - - tegra_ehci_power_down(hcd); - return 0; -} - -static int controller_resume(struct device *dev) -{ - struct tegra_ehci_hcd *tegra = - platform_get_drvdata(to_platform_device(dev)); - struct ehci_hcd *ehci = tegra->ehci; - struct usb_hcd *hcd = ehci_to_hcd(ehci); - struct ehci_regs __iomem *hw = ehci->regs; - unsigned long val; - - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - tegra_ehci_power_up(hcd); - - if (tegra->port_speed > TEGRA_USB_PHY_PORT_SPEED_HIGH) { - /* Wait for the phy to detect new devices - * before we restart the controller */ - msleep(10); - goto restart; - } - - /* Force the phy to keep data lines in suspend state */ - tegra_ehci_phy_restore_start(hcd->phy, tegra->port_speed); - - /* Enable host mode */ - tdi_reset(ehci); - - /* Enable Port Power */ - val = readl(&hw->port_status[0]); - val |= PORT_POWER; - writel(val, &hw->port_status[0]); - udelay(10); - - /* Check if the phy resume from LP0. When the phy resume from LP0 - * USB register will be reset. */ - if (!readl(&hw->async_next)) { - /* Program the field PTC based on the saved speed mode */ - val = readl(&hw->port_status[0]); - val &= ~PORT_TEST(~0); - if (tegra->port_speed == TEGRA_USB_PHY_PORT_SPEED_HIGH) - val |= PORT_TEST_FORCE; - else if (tegra->port_speed == TEGRA_USB_PHY_PORT_SPEED_FULL) - val |= PORT_TEST(6); - else if (tegra->port_speed == TEGRA_USB_PHY_PORT_SPEED_LOW) - val |= PORT_TEST(7); - writel(val, &hw->port_status[0]); - udelay(10); - - /* Disable test mode by setting PTC field to NORMAL_OP */ - val = readl(&hw->port_status[0]); - val &= ~PORT_TEST(~0); - writel(val, &hw->port_status[0]); - udelay(10); - } - - /* Poll until CCS is enabled */ - if (handshake(ehci, &hw->port_status[0], PORT_CONNECT, - PORT_CONNECT, 2000)) { - pr_err("%s: timeout waiting for PORT_CONNECT\n", __func__); - goto restart; - } - - /* Poll until PE is enabled */ - if (handshake(ehci, &hw->port_status[0], PORT_PE, - PORT_PE, 2000)) { - pr_err("%s: timeout waiting for USB_PORTSC1_PE\n", __func__); - goto restart; - } - - /* Clear the PCI status, to avoid an interrupt taken upon resume */ - val = readl(&hw->status); - val |= STS_PCD; - writel(val, &hw->status); - - /* Put controller in suspend mode by writing 1 to SUSP bit of PORTSC */ - val = readl(&hw->port_status[0]); - if ((val & PORT_POWER) && (val & PORT_PE)) { - val |= PORT_SUSPEND; - writel(val, &hw->port_status[0]); - - /* Wait until port suspend completes */ - if (handshake(ehci, &hw->port_status[0], PORT_SUSPEND, - PORT_SUSPEND, 1000)) { - pr_err("%s: timeout waiting for PORT_SUSPEND\n", - __func__); - goto restart; - } - } - - tegra_ehci_phy_restore_end(hcd->phy); - goto done; - - restart: - if (tegra->port_speed <= TEGRA_USB_PHY_PORT_SPEED_HIGH) - tegra_ehci_phy_restore_end(hcd->phy); - - tegra_ehci_restart(hcd); - - done: - tegra_usb_phy_preresume(hcd->phy); - tegra->port_resuming = 1; - return 0; -} - -static int tegra_ehci_suspend(struct device *dev) -{ - struct tegra_ehci_hcd *tegra = - platform_get_drvdata(to_platform_device(dev)); - struct usb_hcd *hcd = ehci_to_hcd(tegra->ehci); - int rc = 0; - - /* - * When system sleep is supported and USB controller wakeup is - * implemented: If the controller is runtime-suspended and the - * wakeup setting needs to be changed, call pm_runtime_resume(). - */ - if (HCD_HW_ACCESSIBLE(hcd)) - rc = controller_suspend(dev); - return rc; -} - -static int tegra_ehci_resume(struct device *dev) -{ - int rc; - - rc = controller_resume(dev); - if (rc == 0) { - pm_runtime_disable(dev); - pm_runtime_set_active(dev); - pm_runtime_enable(dev); - } - return rc; -} - -static int tegra_ehci_runtime_suspend(struct device *dev) -{ - return controller_suspend(dev); -} - -static int tegra_ehci_runtime_resume(struct device *dev) -{ - return controller_resume(dev); -} - -static const struct dev_pm_ops tegra_ehci_pm_ops = { - .suspend = tegra_ehci_suspend, - .resume = tegra_ehci_resume, - .runtime_suspend = tegra_ehci_runtime_suspend, - .runtime_resume = tegra_ehci_runtime_resume, +static const struct tegra_ehci_soc_config tegra20_soc_config = { + .has_hostpc = false, }; -#endif - -/* Bits of PORTSC1, which will get cleared by writing 1 into them */ -#define TEGRA_PORTSC1_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC) - -static void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val) -{ - unsigned long val; - struct usb_hcd *hcd = bus_to_hcd(x->otg->host); - void __iomem *base = hcd->regs; - - val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS; - val &= ~TEGRA_USB_PORTSC1_PTS(3); - val |= TEGRA_USB_PORTSC1_PTS(pts_val & 3); - writel(val, base + TEGRA_USB_PORTSC1); -} - -static void tegra_ehci_set_phcd(struct usb_phy *x, bool enable) -{ - unsigned long val; - struct usb_hcd *hcd = bus_to_hcd(x->otg->host); - void __iomem *base = hcd->regs; - - val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS; - if (enable) - val |= TEGRA_USB_PORTSC1_PHCD; - else - val &= ~TEGRA_USB_PORTSC1_PHCD; - writel(val, base + TEGRA_USB_PORTSC1); -} +static struct of_device_id tegra_ehci_of_match[] = { + { .compatible = "nvidia,tegra30-ehci", .data = &tegra30_soc_config }, + { .compatible = "nvidia,tegra20-ehci", .data = &tegra20_soc_config }, + { }, +}; static int tegra_ehci_probe(struct platform_device *pdev) { + const struct of_device_id *match; + const struct tegra_ehci_soc_config *soc_config; struct resource *res; struct usb_hcd *hcd; + struct ehci_hcd *ehci; struct tegra_ehci_hcd *tegra; - struct tegra_ehci_platform_data *pdata; int err = 0; int irq; - int instance = pdev->id; struct usb_phy *u_phy; - pdata = pdev->dev.platform_data; - if (!pdata) { - dev_err(&pdev->dev, "Platform data missing\n"); - return -EINVAL; + match = of_match_device(tegra_ehci_of_match, &pdev->dev); + if (!match) { + dev_err(&pdev->dev, "Error: No device match found\n"); + return -ENODEV; } + soc_config = match->data; /* Right now device-tree probed devices don't get dma_mask set. * Since shared usb code relies on it, set it here for now. @@ -663,37 +367,40 @@ static int tegra_ehci_probe(struct platform_device *pdev) if (!pdev->dev.coherent_dma_mask) pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); - setup_vbus_gpio(pdev, pdata); - - tegra = devm_kzalloc(&pdev->dev, sizeof(struct tegra_ehci_hcd), - GFP_KERNEL); - if (!tegra) - return -ENOMEM; - hcd = usb_create_hcd(&tegra_ehci_hc_driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { dev_err(&pdev->dev, "Unable to create HCD\n"); return -ENOMEM; } + platform_set_drvdata(pdev, hcd); + ehci = hcd_to_ehci(hcd); + tegra = (struct tegra_ehci_hcd *)ehci->priv; - platform_set_drvdata(pdev, tegra); + hcd->has_tt = 1; tegra->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(tegra->clk)) { dev_err(&pdev->dev, "Can't get ehci clock\n"); err = PTR_ERR(tegra->clk); - goto fail_clk; + goto cleanup_hcd_create; } err = clk_prepare_enable(tegra->clk); if (err) - goto fail_clk; + goto cleanup_clk_get; tegra_periph_reset_assert(tegra->clk); udelay(1); tegra_periph_reset_deassert(tegra->clk); + u_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "nvidia,phy", 0); + if (IS_ERR(u_phy)) { + err = PTR_ERR(u_phy); + goto cleanup_clk_en; + } + hcd->phy = u_phy; + tegra->needs_double_reset = of_property_read_bool(pdev->dev.of_node, "nvidia,needs-double-reset"); @@ -701,7 +408,7 @@ static int tegra_ehci_probe(struct platform_device *pdev) if (!res) { dev_err(&pdev->dev, "Failed to get I/O memory\n"); err = -ENXIO; - goto fail_io; + goto cleanup_clk_en; } hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); @@ -709,118 +416,69 @@ static int tegra_ehci_probe(struct platform_device *pdev) if (!hcd->regs) { dev_err(&pdev->dev, "Failed to remap I/O memory\n"); err = -ENOMEM; - goto fail_io; - } - - /* This is pretty ugly and needs to be fixed when we do only - * device-tree probing. Old code relies on the platform_device - * numbering that we lack for device-tree-instantiated devices. - */ - if (instance < 0) { - switch (res->start) { - case TEGRA_USB_BASE: - instance = 0; - break; - case TEGRA_USB2_BASE: - instance = 1; - break; - case TEGRA_USB3_BASE: - instance = 2; - break; - default: - err = -ENODEV; - dev_err(&pdev->dev, "unknown usb instance\n"); - goto fail_io; - } + goto cleanup_clk_en; } + ehci->caps = hcd->regs + 0x100; + ehci->has_hostpc = soc_config->has_hostpc; - tegra->phy = tegra_usb_phy_open(&pdev->dev, instance, hcd->regs, - pdata->phy_config, - TEGRA_USB_PHY_MODE_HOST, - tegra_ehci_set_pts, - tegra_ehci_set_phcd); - if (IS_ERR(tegra->phy)) { - dev_err(&pdev->dev, "Failed to open USB phy\n"); - err = -ENXIO; - goto fail_io; + err = usb_phy_init(hcd->phy); + if (err) { + dev_err(&pdev->dev, "Failed to initialize phy\n"); + goto cleanup_clk_en; } - hcd->phy = u_phy = &tegra->phy->u_phy; - usb_phy_init(hcd->phy); - u_phy->otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg), GFP_KERNEL); if (!u_phy->otg) { dev_err(&pdev->dev, "Failed to alloc memory for otg\n"); err = -ENOMEM; - goto fail_io; + goto cleanup_phy; } u_phy->otg->host = hcd_to_bus(hcd); err = usb_phy_set_suspend(hcd->phy, 0); if (err) { dev_err(&pdev->dev, "Failed to power on the phy\n"); - goto fail_phy; + goto cleanup_phy; } - tegra->host_resumed = 1; - tegra->ehci = hcd_to_ehci(hcd); - irq = platform_get_irq(pdev, 0); if (!irq) { dev_err(&pdev->dev, "Failed to get IRQ\n"); err = -ENODEV; - goto fail_phy; + goto cleanup_phy; } - if (pdata->operating_mode == TEGRA_USB_OTG) { - tegra->transceiver = - devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); - if (!IS_ERR(tegra->transceiver)) - otg_set_host(tegra->transceiver->otg, &hcd->self); - } else { - tegra->transceiver = ERR_PTR(-ENODEV); - } + otg_set_host(u_phy->otg, &hcd->self); err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) { dev_err(&pdev->dev, "Failed to add USB HCD\n"); - goto fail; + goto cleanup_otg_set_host; } - pm_runtime_set_active(&pdev->dev); - pm_runtime_get_noresume(&pdev->dev); - - /* Don't skip the pm_runtime_forbid call if wakeup isn't working */ - /* if (!pdata->power_down_on_bus_suspend) */ - pm_runtime_forbid(&pdev->dev); - pm_runtime_enable(&pdev->dev); - pm_runtime_put_sync(&pdev->dev); return err; -fail: - if (!IS_ERR(tegra->transceiver)) - otg_set_host(tegra->transceiver->otg, NULL); -fail_phy: +cleanup_otg_set_host: + otg_set_host(u_phy->otg, NULL); +cleanup_phy: usb_phy_shutdown(hcd->phy); -fail_io: +cleanup_clk_en: clk_disable_unprepare(tegra->clk); -fail_clk: +cleanup_clk_get: + clk_put(tegra->clk); +cleanup_hcd_create: usb_put_hcd(hcd); return err; } static int tegra_ehci_remove(struct platform_device *pdev) { - struct tegra_ehci_hcd *tegra = platform_get_drvdata(pdev); - struct usb_hcd *hcd = ehci_to_hcd(tegra->ehci); - - pm_runtime_get_sync(&pdev->dev); - pm_runtime_disable(&pdev->dev); - pm_runtime_put_noidle(&pdev->dev); + struct usb_hcd *hcd = platform_get_drvdata(pdev); + struct tegra_ehci_hcd *tegra = + (struct tegra_ehci_hcd *)hcd_to_ehci(hcd)->priv; - if (!IS_ERR(tegra->transceiver)) - otg_set_host(tegra->transceiver->otg, NULL); + otg_set_host(hcd->phy->otg, NULL); usb_phy_shutdown(hcd->phy); usb_remove_hcd(hcd); @@ -833,27 +491,61 @@ static int tegra_ehci_remove(struct platform_device *pdev) static void tegra_ehci_hcd_shutdown(struct platform_device *pdev) { - struct tegra_ehci_hcd *tegra = platform_get_drvdata(pdev); - struct usb_hcd *hcd = ehci_to_hcd(tegra->ehci); + struct usb_hcd *hcd = platform_get_drvdata(pdev); if (hcd->driver->shutdown) hcd->driver->shutdown(hcd); } -static struct of_device_id tegra_ehci_of_match[] = { - { .compatible = "nvidia,tegra20-ehci", }, - { }, -}; - static struct platform_driver tegra_ehci_driver = { .probe = tegra_ehci_probe, .remove = tegra_ehci_remove, .shutdown = tegra_ehci_hcd_shutdown, .driver = { - .name = "tegra-ehci", + .name = DRV_NAME, .of_match_table = tegra_ehci_of_match, -#ifdef CONFIG_PM - .pm = &tegra_ehci_pm_ops, -#endif } }; + +static const struct ehci_driver_overrides tegra_overrides __initconst = { + .extra_priv_size = sizeof(struct tegra_ehci_hcd), +}; + +static int __init ehci_tegra_init(void) +{ + if (usb_disabled()) + return -ENODEV; + + pr_info(DRV_NAME ": " DRIVER_DESC "\n"); + + ehci_init_driver(&tegra_ehci_hc_driver, &tegra_overrides); + + /* + * The Tegra HW has some unusual quirks, which require Tegra-specific + * workarounds. We override certain hc_driver functions here to + * achieve that. We explicitly do not enhance ehci_driver_overrides to + * allow this more easily, since this is an unusual case, and we don't + * want to encourage others to override these functions by making it + * too easy. + */ + + orig_hub_control = tegra_ehci_hc_driver.hub_control; + + tegra_ehci_hc_driver.map_urb_for_dma = tegra_ehci_map_urb_for_dma; + tegra_ehci_hc_driver.unmap_urb_for_dma = tegra_ehci_unmap_urb_for_dma; + tegra_ehci_hc_driver.hub_control = tegra_ehci_hub_control; + + return platform_driver_register(&tegra_ehci_driver); +} +module_init(ehci_tegra_init); + +static void __exit ehci_tegra_cleanup(void) +{ + platform_driver_unregister(&tegra_ehci_driver); +} +module_exit(ehci_tegra_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME); +MODULE_DEVICE_TABLE(of, tegra_ehci_of_match); diff --git a/drivers/usb/host/ehci-tilegx.c b/drivers/usb/host/ehci-tilegx.c index b083a350eea3..67026ffbf9a8 100644 --- a/drivers/usb/host/ehci-tilegx.c +++ b/drivers/usb/host/ehci-tilegx.c @@ -61,7 +61,7 @@ static const struct hc_driver ehci_tilegx_hc_driver = { * Generic hardware linkage. */ .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * Basic lifecycle operations. @@ -101,7 +101,7 @@ static int ehci_hcd_tilegx_drv_probe(struct platform_device *pdev) { struct usb_hcd *hcd; struct ehci_hcd *ehci; - struct tilegx_usb_platform_data *pdata = pdev->dev.platform_data; + struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); pte_t pte = { 0 }; int my_cpu = smp_processor_id(); int ret; @@ -186,14 +186,13 @@ err_hcd: static int ehci_hcd_tilegx_drv_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); - struct tilegx_usb_platform_data *pdata = pdev->dev.platform_data; + struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); usb_remove_hcd(hcd); usb_put_hcd(hcd); tilegx_stop_ehc(); gxio_usb_host_destroy(&pdata->usb_ctx); destroy_irq(pdata->irq); - platform_set_drvdata(pdev, NULL); return 0; } diff --git a/drivers/usb/host/ehci-timer.c b/drivers/usb/host/ehci-timer.c index 11e5b32f73e9..424ac5d83714 100644 --- a/drivers/usb/host/ehci-timer.c +++ b/drivers/usb/host/ehci-timer.c @@ -72,6 +72,7 @@ static unsigned event_delays_ns[] = { 1 * NSEC_PER_MSEC, /* EHCI_HRTIMER_POLL_DEAD */ 1125 * NSEC_PER_USEC, /* EHCI_HRTIMER_UNLINK_INTR */ 2 * NSEC_PER_MSEC, /* EHCI_HRTIMER_FREE_ITDS */ + 5 * NSEC_PER_MSEC, /* EHCI_HRTIMER_START_UNLINK_INTR */ 6 * NSEC_PER_MSEC, /* EHCI_HRTIMER_ASYNC_UNLINKS */ 10 * NSEC_PER_MSEC, /* EHCI_HRTIMER_IAA_WATCHDOG */ 10 * NSEC_PER_MSEC, /* EHCI_HRTIMER_DISABLE_PERIODIC */ @@ -215,6 +216,36 @@ static void ehci_handle_controller_death(struct ehci_hcd *ehci) /* Not in process context, so don't try to reset the controller */ } +/* start to unlink interrupt QHs */ +static void ehci_handle_start_intr_unlinks(struct ehci_hcd *ehci) +{ + bool stopped = (ehci->rh_state < EHCI_RH_RUNNING); + + /* + * Process all the QHs on the intr_unlink list that were added + * before the current unlink cycle began. The list is in + * temporal order, so stop when we reach the first entry in the + * current cycle. But if the root hub isn't running then + * process all the QHs on the list. + */ + while (!list_empty(&ehci->intr_unlink_wait)) { + struct ehci_qh *qh; + + qh = list_first_entry(&ehci->intr_unlink_wait, + struct ehci_qh, unlink_node); + if (!stopped && (qh->unlink_cycle == + ehci->intr_unlink_wait_cycle)) + break; + list_del_init(&qh->unlink_node); + start_unlink_intr(ehci, qh); + } + + /* Handle remaining entries later */ + if (!list_empty(&ehci->intr_unlink_wait)) { + ehci_enable_event(ehci, EHCI_HRTIMER_START_UNLINK_INTR, true); + ++ehci->intr_unlink_wait_cycle; + } +} /* Handle unlinked interrupt QHs once they are gone from the hardware */ static void ehci_handle_intr_unlinks(struct ehci_hcd *ehci) @@ -236,7 +267,7 @@ static void ehci_handle_intr_unlinks(struct ehci_hcd *ehci) unlink_node); if (!stopped && qh->unlink_cycle == ehci->intr_unlink_cycle) break; - list_del(&qh->unlink_node); + list_del_init(&qh->unlink_node); end_unlink_intr(ehci, qh); } @@ -363,6 +394,7 @@ static void (*event_handlers[])(struct ehci_hcd *) = { ehci_handle_controller_death, /* EHCI_HRTIMER_POLL_DEAD */ ehci_handle_intr_unlinks, /* EHCI_HRTIMER_UNLINK_INTR */ end_free_itds, /* EHCI_HRTIMER_FREE_ITDS */ + ehci_handle_start_intr_unlinks, /* EHCI_HRTIMER_START_UNLINK_INTR */ unlink_empty_async, /* EHCI_HRTIMER_ASYNC_UNLINKS */ ehci_iaa_watchdog, /* EHCI_HRTIMER_IAA_WATCHDOG */ ehci_disable_PSE, /* EHCI_HRTIMER_DISABLE_PERIODIC */ diff --git a/drivers/usb/host/ehci-w90x900.c b/drivers/usb/host/ehci-w90x900.c index 59e0e24c753f..1c370dfbee0d 100644 --- a/drivers/usb/host/ehci-w90x900.c +++ b/drivers/usb/host/ehci-w90x900.c @@ -108,7 +108,7 @@ static const struct hc_driver ehci_w90x900_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_USB2|HCD_MEMORY, + .flags = HCD_USB2|HCD_MEMORY|HCD_BH, /* * basic lifecycle operations diff --git a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c index d845e3bcfaff..95979f9f4381 100644 --- a/drivers/usb/host/ehci-xilinx-of.c +++ b/drivers/usb/host/ehci-xilinx-of.c @@ -79,7 +79,7 @@ static const struct hc_driver ehci_xilinx_of_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * basic lifecycle operations @@ -209,8 +209,7 @@ err_irq: */ static int ehci_hcd_xilinx_of_remove(struct platform_device *op) { - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); - dev_set_drvdata(&op->dev, NULL); + struct usb_hcd *hcd = platform_get_drvdata(op); dev_dbg(&op->dev, "stopping XILINX-OF USB Controller\n"); @@ -221,21 +220,6 @@ static int ehci_hcd_xilinx_of_remove(struct platform_device *op) return 0; } -/** - * ehci_hcd_xilinx_of_shutdown - shutdown the hcd - * @op: pointer to platform_device structure that is to be removed - * - * Properly shutdown the hcd, call driver's shutdown routine. - */ -static void ehci_hcd_xilinx_of_shutdown(struct platform_device *op) -{ - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); - - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); -} - - static const struct of_device_id ehci_hcd_xilinx_of_match[] = { {.compatible = "xlnx,xps-usb-host-1.00.a",}, {}, @@ -245,7 +229,7 @@ MODULE_DEVICE_TABLE(of, ehci_hcd_xilinx_of_match); static struct platform_driver ehci_hcd_xilinx_of_driver = { .probe = ehci_hcd_xilinx_of_probe, .remove = ehci_hcd_xilinx_of_remove, - .shutdown = ehci_hcd_xilinx_of_shutdown, + .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "xilinx-of-ehci", .owner = THIS_MODULE, diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 7c978b23520d..291db7d09f22 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -38,7 +38,7 @@ typedef __u16 __bitwise __hc16; #endif /* statistics can be kept for tuning/monitoring */ -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) #define EHCI_STATS #endif @@ -88,6 +88,7 @@ enum ehci_hrtimer_event { EHCI_HRTIMER_POLL_DEAD, /* Wait for dead controller to stop */ EHCI_HRTIMER_UNLINK_INTR, /* Wait for interrupt QH unlink */ EHCI_HRTIMER_FREE_ITDS, /* Wait for unused iTDs and siTDs */ + EHCI_HRTIMER_START_UNLINK_INTR, /* Unlink empty interrupt QHs */ EHCI_HRTIMER_ASYNC_UNLINKS, /* Unlink empty async QHs */ EHCI_HRTIMER_IAA_WATCHDOG, /* Handle lost IAA interrupts */ EHCI_HRTIMER_DISABLE_PERIODIC, /* Wait to disable periodic sched */ @@ -143,7 +144,9 @@ struct ehci_hcd { /* one per controller */ unsigned i_thresh; /* uframes HC might cache */ union ehci_shadow *pshadow; /* mirror hw periodic table */ + struct list_head intr_unlink_wait; struct list_head intr_unlink; + unsigned intr_unlink_wait_cycle; unsigned intr_unlink_cycle; unsigned now_frame; /* frame from HC hardware */ unsigned last_iso_frame; /* last frame scanned for iso */ @@ -210,6 +213,7 @@ struct ehci_hcd { /* one per controller */ #define OHCI_HCCTRL_LEN 0x4 __hc32 *ohci_hcctrl_reg; unsigned has_hostpc:1; + unsigned has_tdi_phy_lpm:1; unsigned has_ppcd:1; /* support per-port change bits */ u8 sbrn; /* packed release number */ @@ -222,7 +226,7 @@ struct ehci_hcd { /* one per controller */ #endif /* debug files */ -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) struct dentry *debug_dir; #endif @@ -778,15 +782,10 @@ static inline u32 hc32_to_cpup (const struct ehci_hcd *ehci, const __hc32 *x) #define ehci_warn(ehci, fmt, args...) \ dev_warn(ehci_to_hcd(ehci)->self.controller , fmt , ## args) -#ifdef VERBOSE_DEBUG -# define ehci_vdbg ehci_dbg -#else - static inline void ehci_vdbg(struct ehci_hcd *ehci, ...) {} -#endif -#ifndef DEBUG +#if !defined(DEBUG) && !defined(CONFIG_DYNAMIC_DEBUG) #define STUB_DEBUG_FILES -#endif /* DEBUG */ +#endif /* !DEBUG && !CONFIG_DYNAMIC_DEBUG */ /*-------------------------------------------------------------------------*/ @@ -800,6 +799,8 @@ struct ehci_driver_overrides { extern void ehci_init_driver(struct hc_driver *drv, const struct ehci_driver_overrides *over); extern int ehci_setup(struct usb_hcd *hcd); +extern int ehci_handshake(struct ehci_hcd *ehci, void __iomem *ptr, + u32 mask, u32 done, int usec); #ifdef CONFIG_PM extern int ehci_suspend(struct usb_hcd *hcd, bool do_wakeup); diff --git a/drivers/usb/host/fhci-sched.c b/drivers/usb/host/fhci-sched.c index 8f18538e0ff7..95ca5986e672 100644 --- a/drivers/usb/host/fhci-sched.c +++ b/drivers/usb/host/fhci-sched.c @@ -739,9 +739,13 @@ void fhci_queue_urb(struct fhci_hcd *fhci, struct urb *urb) } /* for ISO transfer calculate start frame index */ - if (ed->mode == FHCI_TF_ISO && urb->transfer_flags & URB_ISO_ASAP) - urb->start_frame = ed->td_head ? ed->last_iso + 1 : + if (ed->mode == FHCI_TF_ISO) { + /* Ignore the possibility of underruns */ + urb->start_frame = ed->td_head ? ed->next_iso : get_frame_num(fhci); + ed->next_iso = (urb->start_frame + urb->interval * + urb->number_of_packets) & 0x07ff; + } /* * OHCI handles the DATA toggle itself,we just use the USB diff --git a/drivers/usb/host/fhci.h b/drivers/usb/host/fhci.h index 7cc1c32dc36c..154e6a007727 100644 --- a/drivers/usb/host/fhci.h +++ b/drivers/usb/host/fhci.h @@ -338,7 +338,7 @@ struct ed { /* read only parameters, should be cleared upon initialization */ u8 toggle_carry; /* toggle carry from the last TD submitted */ - u32 last_iso; /* time stamp of last queued ISO transfer */ + u16 next_iso; /* time stamp of next queued ISO transfer */ struct td *td_head; /* a pointer to the current TD handled */ }; diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c new file mode 100644 index 000000000000..fce13bcc4a3e --- /dev/null +++ b/drivers/usb/host/fotg210-hcd.c @@ -0,0 +1,6049 @@ +/* + * Faraday FOTG210 EHCI-like driver + * + * Copyright (c) 2013 Faraday Technology Corporation + * + * Author: Yuan-Hsin Chen <yhchen@faraday-tech.com> + * Feng-Hsin Chiang <john453@faraday-tech.com> + * Po-Yu Chuang <ratbert.chuang@gmail.com> + * + * Most of code borrowed from the Linux-3.7 EHCI driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <linux/module.h> +#include <linux/device.h> +#include <linux/dmapool.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/vmalloc.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/hrtimer.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> +#include <linux/moduleparam.h> +#include <linux/dma-mapping.h> +#include <linux/debugfs.h> +#include <linux/slab.h> +#include <linux/uaccess.h> +#include <linux/platform_device.h> +#include <linux/io.h> + +#include <asm/byteorder.h> +#include <asm/irq.h> +#include <asm/unaligned.h> + +/*-------------------------------------------------------------------------*/ +#define DRIVER_AUTHOR "Yuan-Hsin Chen" +#define DRIVER_DESC "FOTG210 Host Controller (EHCI) Driver" + +static const char hcd_name[] = "fotg210_hcd"; + +#undef VERBOSE_DEBUG +#undef FOTG210_URB_TRACE + +#ifdef DEBUG +#define FOTG210_STATS +#endif + +/* magic numbers that can affect system performance */ +#define FOTG210_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */ +#define FOTG210_TUNE_RL_HS 4 /* nak throttle; see 4.9 */ +#define FOTG210_TUNE_RL_TT 0 +#define FOTG210_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */ +#define FOTG210_TUNE_MULT_TT 1 +/* + * Some drivers think it's safe to schedule isochronous transfers more than + * 256 ms into the future (partly as a result of an old bug in the scheduling + * code). In an attempt to avoid trouble, we will use a minimum scheduling + * length of 512 frames instead of 256. + */ +#define FOTG210_TUNE_FLS 1 /* (medium) 512-frame schedule */ + +/* Initial IRQ latency: faster than hw default */ +static int log2_irq_thresh; /* 0 to 6 */ +module_param(log2_irq_thresh, int, S_IRUGO); +MODULE_PARM_DESC(log2_irq_thresh, "log2 IRQ latency, 1-64 microframes"); + +/* initial park setting: slower than hw default */ +static unsigned park; +module_param(park, uint, S_IRUGO); +MODULE_PARM_DESC(park, "park setting; 1-3 back-to-back async packets"); + +/* for link power management(LPM) feature */ +static unsigned int hird; +module_param(hird, int, S_IRUGO); +MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us"); + +#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT) + +#include "fotg210.h" + +/*-------------------------------------------------------------------------*/ + +#define fotg210_dbg(fotg210, fmt, args...) \ + dev_dbg(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args) +#define fotg210_err(fotg210, fmt, args...) \ + dev_err(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args) +#define fotg210_info(fotg210, fmt, args...) \ + dev_info(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args) +#define fotg210_warn(fotg210, fmt, args...) \ + dev_warn(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args) + +#ifdef VERBOSE_DEBUG +# define fotg210_vdbg fotg210_dbg +#else + static inline void fotg210_vdbg(struct fotg210_hcd *fotg210, ...) {} +#endif + +#ifdef DEBUG + +/* check the values in the HCSPARAMS register + * (host controller _Structural_ parameters) + * see EHCI spec, Table 2-4 for each value + */ +static void dbg_hcs_params(struct fotg210_hcd *fotg210, char *label) +{ + u32 params = fotg210_readl(fotg210, &fotg210->caps->hcs_params); + + fotg210_dbg(fotg210, + "%s hcs_params 0x%x ports=%d\n", + label, params, + HCS_N_PORTS(params) + ); +} +#else + +static inline void dbg_hcs_params(struct fotg210_hcd *fotg210, char *label) {} + +#endif + +#ifdef DEBUG + +/* check the values in the HCCPARAMS register + * (host controller _Capability_ parameters) + * see EHCI Spec, Table 2-5 for each value + * */ +static void dbg_hcc_params(struct fotg210_hcd *fotg210, char *label) +{ + u32 params = fotg210_readl(fotg210, &fotg210->caps->hcc_params); + + fotg210_dbg(fotg210, + "%s hcc_params %04x uframes %s%s\n", + label, + params, + HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", + HCC_CANPARK(params) ? " park" : ""); +} +#else + +static inline void dbg_hcc_params(struct fotg210_hcd *fotg210, char *label) {} + +#endif + +#ifdef DEBUG + +static void __maybe_unused +dbg_qtd(const char *label, struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd) +{ + fotg210_dbg(fotg210, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd, + hc32_to_cpup(fotg210, &qtd->hw_next), + hc32_to_cpup(fotg210, &qtd->hw_alt_next), + hc32_to_cpup(fotg210, &qtd->hw_token), + hc32_to_cpup(fotg210, &qtd->hw_buf[0])); + if (qtd->hw_buf[1]) + fotg210_dbg(fotg210, " p1=%08x p2=%08x p3=%08x p4=%08x\n", + hc32_to_cpup(fotg210, &qtd->hw_buf[1]), + hc32_to_cpup(fotg210, &qtd->hw_buf[2]), + hc32_to_cpup(fotg210, &qtd->hw_buf[3]), + hc32_to_cpup(fotg210, &qtd->hw_buf[4])); +} + +static void __maybe_unused +dbg_qh(const char *label, struct fotg210_hcd *fotg210, struct fotg210_qh *qh) +{ + struct fotg210_qh_hw *hw = qh->hw; + + fotg210_dbg(fotg210, "%s qh %p n%08x info %x %x qtd %x\n", label, + qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current); + dbg_qtd("overlay", fotg210, (struct fotg210_qtd *) &hw->hw_qtd_next); +} + +static void __maybe_unused +dbg_itd(const char *label, struct fotg210_hcd *fotg210, struct fotg210_itd *itd) +{ + fotg210_dbg(fotg210, "%s[%d] itd %p, next %08x, urb %p\n", + label, itd->frame, itd, hc32_to_cpu(fotg210, itd->hw_next), + itd->urb); + fotg210_dbg(fotg210, + " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n", + hc32_to_cpu(fotg210, itd->hw_transaction[0]), + hc32_to_cpu(fotg210, itd->hw_transaction[1]), + hc32_to_cpu(fotg210, itd->hw_transaction[2]), + hc32_to_cpu(fotg210, itd->hw_transaction[3]), + hc32_to_cpu(fotg210, itd->hw_transaction[4]), + hc32_to_cpu(fotg210, itd->hw_transaction[5]), + hc32_to_cpu(fotg210, itd->hw_transaction[6]), + hc32_to_cpu(fotg210, itd->hw_transaction[7])); + fotg210_dbg(fotg210, + " buf: %08x %08x %08x %08x %08x %08x %08x\n", + hc32_to_cpu(fotg210, itd->hw_bufp[0]), + hc32_to_cpu(fotg210, itd->hw_bufp[1]), + hc32_to_cpu(fotg210, itd->hw_bufp[2]), + hc32_to_cpu(fotg210, itd->hw_bufp[3]), + hc32_to_cpu(fotg210, itd->hw_bufp[4]), + hc32_to_cpu(fotg210, itd->hw_bufp[5]), + hc32_to_cpu(fotg210, itd->hw_bufp[6])); + fotg210_dbg(fotg210, " index: %d %d %d %d %d %d %d %d\n", + itd->index[0], itd->index[1], itd->index[2], + itd->index[3], itd->index[4], itd->index[5], + itd->index[6], itd->index[7]); +} + +static int __maybe_unused +dbg_status_buf(char *buf, unsigned len, const char *label, u32 status) +{ + return scnprintf(buf, len, + "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s", + label, label[0] ? " " : "", status, + (status & STS_ASS) ? " Async" : "", + (status & STS_PSS) ? " Periodic" : "", + (status & STS_RECL) ? " Recl" : "", + (status & STS_HALT) ? " Halt" : "", + (status & STS_IAA) ? " IAA" : "", + (status & STS_FATAL) ? " FATAL" : "", + (status & STS_FLR) ? " FLR" : "", + (status & STS_PCD) ? " PCD" : "", + (status & STS_ERR) ? " ERR" : "", + (status & STS_INT) ? " INT" : "" + ); +} + +static int __maybe_unused +dbg_intr_buf(char *buf, unsigned len, const char *label, u32 enable) +{ + return scnprintf(buf, len, + "%s%sintrenable %02x%s%s%s%s%s%s", + label, label[0] ? " " : "", enable, + (enable & STS_IAA) ? " IAA" : "", + (enable & STS_FATAL) ? " FATAL" : "", + (enable & STS_FLR) ? " FLR" : "", + (enable & STS_PCD) ? " PCD" : "", + (enable & STS_ERR) ? " ERR" : "", + (enable & STS_INT) ? " INT" : "" + ); +} + +static const char *const fls_strings[] = { "1024", "512", "256", "??" }; + +static int +dbg_command_buf(char *buf, unsigned len, const char *label, u32 command) +{ + return scnprintf(buf, len, + "%s%scommand %07x %s=%d ithresh=%d%s%s%s " + "period=%s%s %s", + label, label[0] ? " " : "", command, + (command & CMD_PARK) ? " park" : "(park)", + CMD_PARK_CNT(command), + (command >> 16) & 0x3f, + (command & CMD_IAAD) ? " IAAD" : "", + (command & CMD_ASE) ? " Async" : "", + (command & CMD_PSE) ? " Periodic" : "", + fls_strings[(command >> 2) & 0x3], + (command & CMD_RESET) ? " Reset" : "", + (command & CMD_RUN) ? "RUN" : "HALT" + ); +} + +static int +dbg_port_buf(char *buf, unsigned len, const char *label, int port, u32 status) +{ + char *sig; + + /* signaling state */ + switch (status & (3 << 10)) { + case 0 << 10: + sig = "se0"; + break; + case 1 << 10: + sig = "k"; + break; /* low speed */ + case 2 << 10: + sig = "j"; + break; + default: + sig = "?"; + break; + } + + return scnprintf(buf, len, + "%s%sport:%d status %06x %d " + "sig=%s%s%s%s%s%s%s%s", + label, label[0] ? " " : "", port, status, + status>>25,/*device address */ + sig, + (status & PORT_RESET) ? " RESET" : "", + (status & PORT_SUSPEND) ? " SUSPEND" : "", + (status & PORT_RESUME) ? " RESUME" : "", + (status & PORT_PEC) ? " PEC" : "", + (status & PORT_PE) ? " PE" : "", + (status & PORT_CSC) ? " CSC" : "", + (status & PORT_CONNECT) ? " CONNECT" : ""); +} + +#else +static inline void __maybe_unused +dbg_qh(char *label, struct fotg210_hcd *fotg210, struct fotg210_qh *qh) +{} + +static inline int __maybe_unused +dbg_status_buf(char *buf, unsigned len, const char *label, u32 status) +{ return 0; } + +static inline int __maybe_unused +dbg_command_buf(char *buf, unsigned len, const char *label, u32 command) +{ return 0; } + +static inline int __maybe_unused +dbg_intr_buf(char *buf, unsigned len, const char *label, u32 enable) +{ return 0; } + +static inline int __maybe_unused +dbg_port_buf(char *buf, unsigned len, const char *label, int port, u32 status) +{ return 0; } + +#endif /* DEBUG */ + +/* functions have the "wrong" filename when they're output... */ +#define dbg_status(fotg210, label, status) { \ + char _buf[80]; \ + dbg_status_buf(_buf, sizeof(_buf), label, status); \ + fotg210_dbg(fotg210, "%s\n", _buf); \ +} + +#define dbg_cmd(fotg210, label, command) { \ + char _buf[80]; \ + dbg_command_buf(_buf, sizeof(_buf), label, command); \ + fotg210_dbg(fotg210, "%s\n", _buf); \ +} + +#define dbg_port(fotg210, label, port, status) { \ + char _buf[80]; \ + dbg_port_buf(_buf, sizeof(_buf), label, port, status); \ + fotg210_dbg(fotg210, "%s\n", _buf); \ +} + +/*-------------------------------------------------------------------------*/ + +#ifdef STUB_DEBUG_FILES + +static inline void create_debug_files(struct fotg210_hcd *bus) { } +static inline void remove_debug_files(struct fotg210_hcd *bus) { } + +#else + +/* troubleshooting help: expose state in debugfs */ + +static int debug_async_open(struct inode *, struct file *); +static int debug_periodic_open(struct inode *, struct file *); +static int debug_registers_open(struct inode *, struct file *); +static int debug_async_open(struct inode *, struct file *); + +static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); +static int debug_close(struct inode *, struct file *); + +static const struct file_operations debug_async_fops = { + .owner = THIS_MODULE, + .open = debug_async_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; +static const struct file_operations debug_periodic_fops = { + .owner = THIS_MODULE, + .open = debug_periodic_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; +static const struct file_operations debug_registers_fops = { + .owner = THIS_MODULE, + .open = debug_registers_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; + +static struct dentry *fotg210_debug_root; + +struct debug_buffer { + ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ + struct usb_bus *bus; + struct mutex mutex; /* protect filling of buffer */ + size_t count; /* number of characters filled into buffer */ + char *output_buf; + size_t alloc_size; +}; + +#define speed_char(info1)({ char tmp; \ + switch (info1 & (3 << 12)) { \ + case QH_FULL_SPEED: \ + tmp = 'f'; break; \ + case QH_LOW_SPEED: \ + tmp = 'l'; break; \ + case QH_HIGH_SPEED: \ + tmp = 'h'; break; \ + default: \ + tmp = '?'; break; \ + }; tmp; }) + +static inline char token_mark(struct fotg210_hcd *fotg210, __hc32 token) +{ + __u32 v = hc32_to_cpu(fotg210, token); + + if (v & QTD_STS_ACTIVE) + return '*'; + if (v & QTD_STS_HALT) + return '-'; + if (!IS_SHORT_READ(v)) + return ' '; + /* tries to advance through hw_alt_next */ + return '/'; +} + +static void qh_lines( + struct fotg210_hcd *fotg210, + struct fotg210_qh *qh, + char **nextp, + unsigned *sizep +) +{ + u32 scratch; + u32 hw_curr; + struct fotg210_qtd *td; + unsigned temp; + unsigned size = *sizep; + char *next = *nextp; + char mark; + __le32 list_end = FOTG210_LIST_END(fotg210); + struct fotg210_qh_hw *hw = qh->hw; + + if (hw->hw_qtd_next == list_end) /* NEC does this */ + mark = '@'; + else + mark = token_mark(fotg210, hw->hw_token); + if (mark == '/') { /* qh_alt_next controls qh advance? */ + if ((hw->hw_alt_next & QTD_MASK(fotg210)) + == fotg210->async->hw->hw_alt_next) + mark = '#'; /* blocked */ + else if (hw->hw_alt_next == list_end) + mark = '.'; /* use hw_qtd_next */ + /* else alt_next points to some other qtd */ + } + scratch = hc32_to_cpup(fotg210, &hw->hw_info1); + hw_curr = (mark == '*') ? hc32_to_cpup(fotg210, &hw->hw_current) : 0; + temp = scnprintf(next, size, + "qh/%p dev%d %cs ep%d %08x %08x(%08x%c %s nak%d)", + qh, scratch & 0x007f, + speed_char(scratch), + (scratch >> 8) & 0x000f, + scratch, hc32_to_cpup(fotg210, &hw->hw_info2), + hc32_to_cpup(fotg210, &hw->hw_token), mark, + (cpu_to_hc32(fotg210, QTD_TOGGLE) & hw->hw_token) + ? "data1" : "data0", + (hc32_to_cpup(fotg210, &hw->hw_alt_next) >> 1) & 0x0f); + size -= temp; + next += temp; + + /* hc may be modifying the list as we read it ... */ + list_for_each_entry(td, &qh->qtd_list, qtd_list) { + scratch = hc32_to_cpup(fotg210, &td->hw_token); + mark = ' '; + if (hw_curr == td->qtd_dma) + mark = '*'; + else if (hw->hw_qtd_next == cpu_to_hc32(fotg210, td->qtd_dma)) + mark = '+'; + else if (QTD_LENGTH(scratch)) { + if (td->hw_alt_next == fotg210->async->hw->hw_alt_next) + mark = '#'; + else if (td->hw_alt_next != list_end) + mark = '/'; + } + temp = snprintf(next, size, + "\n\t%p%c%s len=%d %08x urb %p", + td, mark, ({ char *tmp; + switch ((scratch>>8)&0x03) { + case 0: + tmp = "out"; + break; + case 1: + tmp = "in"; + break; + case 2: + tmp = "setup"; + break; + default: + tmp = "?"; + break; + } tmp; }), + (scratch >> 16) & 0x7fff, + scratch, + td->urb); + if (size < temp) + temp = size; + size -= temp; + next += temp; + if (temp == size) + goto done; + } + + temp = snprintf(next, size, "\n"); + if (size < temp) + temp = size; + size -= temp; + next += temp; + +done: + *sizep = size; + *nextp = next; +} + +static ssize_t fill_async_buffer(struct debug_buffer *buf) +{ + struct usb_hcd *hcd; + struct fotg210_hcd *fotg210; + unsigned long flags; + unsigned temp, size; + char *next; + struct fotg210_qh *qh; + + hcd = bus_to_hcd(buf->bus); + fotg210 = hcd_to_fotg210(hcd); + next = buf->output_buf; + size = buf->alloc_size; + + *next = 0; + + /* dumps a snapshot of the async schedule. + * usually empty except for long-term bulk reads, or head. + * one QH per line, and TDs we know about + */ + spin_lock_irqsave(&fotg210->lock, flags); + for (qh = fotg210->async->qh_next.qh; size > 0 && qh; + qh = qh->qh_next.qh) + qh_lines(fotg210, qh, &next, &size); + if (fotg210->async_unlink && size > 0) { + temp = scnprintf(next, size, "\nunlink =\n"); + size -= temp; + next += temp; + + for (qh = fotg210->async_unlink; size > 0 && qh; + qh = qh->unlink_next) + qh_lines(fotg210, qh, &next, &size); + } + spin_unlock_irqrestore(&fotg210->lock, flags); + + return strlen(buf->output_buf); +} + +#define DBG_SCHED_LIMIT 64 +static ssize_t fill_periodic_buffer(struct debug_buffer *buf) +{ + struct usb_hcd *hcd; + struct fotg210_hcd *fotg210; + unsigned long flags; + union fotg210_shadow p, *seen; + unsigned temp, size, seen_count; + char *next; + unsigned i; + __hc32 tag; + + seen = kmalloc(DBG_SCHED_LIMIT * sizeof(*seen), GFP_ATOMIC); + if (!seen) + return 0; + seen_count = 0; + + hcd = bus_to_hcd(buf->bus); + fotg210 = hcd_to_fotg210(hcd); + next = buf->output_buf; + size = buf->alloc_size; + + temp = scnprintf(next, size, "size = %d\n", fotg210->periodic_size); + size -= temp; + next += temp; + + /* dump a snapshot of the periodic schedule. + * iso changes, interrupt usually doesn't. + */ + spin_lock_irqsave(&fotg210->lock, flags); + for (i = 0; i < fotg210->periodic_size; i++) { + p = fotg210->pshadow[i]; + if (likely(!p.ptr)) + continue; + tag = Q_NEXT_TYPE(fotg210, fotg210->periodic[i]); + + temp = scnprintf(next, size, "%4d: ", i); + size -= temp; + next += temp; + + do { + struct fotg210_qh_hw *hw; + + switch (hc32_to_cpu(fotg210, tag)) { + case Q_TYPE_QH: + hw = p.qh->hw; + temp = scnprintf(next, size, " qh%d-%04x/%p", + p.qh->period, + hc32_to_cpup(fotg210, + &hw->hw_info2) + /* uframe masks */ + & (QH_CMASK | QH_SMASK), + p.qh); + size -= temp; + next += temp; + /* don't repeat what follows this qh */ + for (temp = 0; temp < seen_count; temp++) { + if (seen[temp].ptr != p.ptr) + continue; + if (p.qh->qh_next.ptr) { + temp = scnprintf(next, size, + " ..."); + size -= temp; + next += temp; + } + break; + } + /* show more info the first time around */ + if (temp == seen_count) { + u32 scratch = hc32_to_cpup(fotg210, + &hw->hw_info1); + struct fotg210_qtd *qtd; + char *type = ""; + + /* count tds, get ep direction */ + temp = 0; + list_for_each_entry(qtd, + &p.qh->qtd_list, + qtd_list) { + temp++; + switch (0x03 & (hc32_to_cpu( + fotg210, + qtd->hw_token) >> 8)) { + case 0: + type = "out"; + continue; + case 1: + type = "in"; + continue; + } + } + + temp = scnprintf(next, size, + "(%c%d ep%d%s " + "[%d/%d] q%d p%d)", + speed_char(scratch), + scratch & 0x007f, + (scratch >> 8) & 0x000f, type, + p.qh->usecs, p.qh->c_usecs, + temp, + 0x7ff & (scratch >> 16)); + + if (seen_count < DBG_SCHED_LIMIT) + seen[seen_count++].qh = p.qh; + } else + temp = 0; + tag = Q_NEXT_TYPE(fotg210, hw->hw_next); + p = p.qh->qh_next; + break; + case Q_TYPE_FSTN: + temp = scnprintf(next, size, + " fstn-%8x/%p", p.fstn->hw_prev, + p.fstn); + tag = Q_NEXT_TYPE(fotg210, p.fstn->hw_next); + p = p.fstn->fstn_next; + break; + case Q_TYPE_ITD: + temp = scnprintf(next, size, + " itd/%p", p.itd); + tag = Q_NEXT_TYPE(fotg210, p.itd->hw_next); + p = p.itd->itd_next; + break; + } + size -= temp; + next += temp; + } while (p.ptr); + + temp = scnprintf(next, size, "\n"); + size -= temp; + next += temp; + } + spin_unlock_irqrestore(&fotg210->lock, flags); + kfree(seen); + + return buf->alloc_size - size; +} +#undef DBG_SCHED_LIMIT + +static const char *rh_state_string(struct fotg210_hcd *fotg210) +{ + switch (fotg210->rh_state) { + case FOTG210_RH_HALTED: + return "halted"; + case FOTG210_RH_SUSPENDED: + return "suspended"; + case FOTG210_RH_RUNNING: + return "running"; + case FOTG210_RH_STOPPING: + return "stopping"; + } + return "?"; +} + +static ssize_t fill_registers_buffer(struct debug_buffer *buf) +{ + struct usb_hcd *hcd; + struct fotg210_hcd *fotg210; + unsigned long flags; + unsigned temp, size, i; + char *next, scratch[80]; + static const char fmt[] = "%*s\n"; + static const char label[] = ""; + + hcd = bus_to_hcd(buf->bus); + fotg210 = hcd_to_fotg210(hcd); + next = buf->output_buf; + size = buf->alloc_size; + + spin_lock_irqsave(&fotg210->lock, flags); + + if (!HCD_HW_ACCESSIBLE(hcd)) { + size = scnprintf(next, size, + "bus %s, device %s\n" + "%s\n" + "SUSPENDED(no register access)\n", + hcd->self.controller->bus->name, + dev_name(hcd->self.controller), + hcd->product_desc); + goto done; + } + + /* Capability Registers */ + i = HC_VERSION(fotg210, fotg210_readl(fotg210, + &fotg210->caps->hc_capbase)); + temp = scnprintf(next, size, + "bus %s, device %s\n" + "%s\n" + "EHCI %x.%02x, rh state %s\n", + hcd->self.controller->bus->name, + dev_name(hcd->self.controller), + hcd->product_desc, + i >> 8, i & 0x0ff, rh_state_string(fotg210)); + size -= temp; + next += temp; + + /* FIXME interpret both types of params */ + i = fotg210_readl(fotg210, &fotg210->caps->hcs_params); + temp = scnprintf(next, size, "structural params 0x%08x\n", i); + size -= temp; + next += temp; + + i = fotg210_readl(fotg210, &fotg210->caps->hcc_params); + temp = scnprintf(next, size, "capability params 0x%08x\n", i); + size -= temp; + next += temp; + + /* Operational Registers */ + temp = dbg_status_buf(scratch, sizeof(scratch), label, + fotg210_readl(fotg210, &fotg210->regs->status)); + temp = scnprintf(next, size, fmt, temp, scratch); + size -= temp; + next += temp; + + temp = dbg_command_buf(scratch, sizeof(scratch), label, + fotg210_readl(fotg210, &fotg210->regs->command)); + temp = scnprintf(next, size, fmt, temp, scratch); + size -= temp; + next += temp; + + temp = dbg_intr_buf(scratch, sizeof(scratch), label, + fotg210_readl(fotg210, &fotg210->regs->intr_enable)); + temp = scnprintf(next, size, fmt, temp, scratch); + size -= temp; + next += temp; + + temp = scnprintf(next, size, "uframe %04x\n", + fotg210_read_frame_index(fotg210)); + size -= temp; + next += temp; + + if (fotg210->async_unlink) { + temp = scnprintf(next, size, "async unlink qh %p\n", + fotg210->async_unlink); + size -= temp; + next += temp; + } + +#ifdef FOTG210_STATS + temp = scnprintf(next, size, + "irq normal %ld err %ld iaa %ld(lost %ld)\n", + fotg210->stats.normal, fotg210->stats.error, fotg210->stats.iaa, + fotg210->stats.lost_iaa); + size -= temp; + next += temp; + + temp = scnprintf(next, size, "complete %ld unlink %ld\n", + fotg210->stats.complete, fotg210->stats.unlink); + size -= temp; + next += temp; +#endif + +done: + spin_unlock_irqrestore(&fotg210->lock, flags); + + return buf->alloc_size - size; +} + +static struct debug_buffer *alloc_buffer(struct usb_bus *bus, + ssize_t (*fill_func)(struct debug_buffer *)) +{ + struct debug_buffer *buf; + + buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL); + + if (buf) { + buf->bus = bus; + buf->fill_func = fill_func; + mutex_init(&buf->mutex); + buf->alloc_size = PAGE_SIZE; + } + + return buf; +} + +static int fill_buffer(struct debug_buffer *buf) +{ + int ret = 0; + + if (!buf->output_buf) + buf->output_buf = vmalloc(buf->alloc_size); + + if (!buf->output_buf) { + ret = -ENOMEM; + goto out; + } + + ret = buf->fill_func(buf); + + if (ret >= 0) { + buf->count = ret; + ret = 0; + } + +out: + return ret; +} + +static ssize_t debug_output(struct file *file, char __user *user_buf, + size_t len, loff_t *offset) +{ + struct debug_buffer *buf = file->private_data; + int ret = 0; + + mutex_lock(&buf->mutex); + if (buf->count == 0) { + ret = fill_buffer(buf); + if (ret != 0) { + mutex_unlock(&buf->mutex); + goto out; + } + } + mutex_unlock(&buf->mutex); + + ret = simple_read_from_buffer(user_buf, len, offset, + buf->output_buf, buf->count); + +out: + return ret; + +} + +static int debug_close(struct inode *inode, struct file *file) +{ + struct debug_buffer *buf = file->private_data; + + if (buf) { + vfree(buf->output_buf); + kfree(buf); + } + + return 0; +} +static int debug_async_open(struct inode *inode, struct file *file) +{ + file->private_data = alloc_buffer(inode->i_private, fill_async_buffer); + + return file->private_data ? 0 : -ENOMEM; +} + +static int debug_periodic_open(struct inode *inode, struct file *file) +{ + struct debug_buffer *buf; + buf = alloc_buffer(inode->i_private, fill_periodic_buffer); + if (!buf) + return -ENOMEM; + + buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8)*PAGE_SIZE; + file->private_data = buf; + return 0; +} + +static int debug_registers_open(struct inode *inode, struct file *file) +{ + file->private_data = alloc_buffer(inode->i_private, + fill_registers_buffer); + + return file->private_data ? 0 : -ENOMEM; +} + +static inline void create_debug_files(struct fotg210_hcd *fotg210) +{ + struct usb_bus *bus = &fotg210_to_hcd(fotg210)->self; + + fotg210->debug_dir = debugfs_create_dir(bus->bus_name, + fotg210_debug_root); + if (!fotg210->debug_dir) + return; + + if (!debugfs_create_file("async", S_IRUGO, fotg210->debug_dir, bus, + &debug_async_fops)) + goto file_error; + + if (!debugfs_create_file("periodic", S_IRUGO, fotg210->debug_dir, bus, + &debug_periodic_fops)) + goto file_error; + + if (!debugfs_create_file("registers", S_IRUGO, fotg210->debug_dir, bus, + &debug_registers_fops)) + goto file_error; + + return; + +file_error: + debugfs_remove_recursive(fotg210->debug_dir); +} + +static inline void remove_debug_files(struct fotg210_hcd *fotg210) +{ + debugfs_remove_recursive(fotg210->debug_dir); +} + +#endif /* STUB_DEBUG_FILES */ +/*-------------------------------------------------------------------------*/ + +/* + * handshake - spin reading hc until handshake completes or fails + * @ptr: address of hc register to be read + * @mask: bits to look at in result of read + * @done: value of those bits when handshake succeeds + * @usec: timeout in microseconds + * + * Returns negative errno, or zero on success + * + * Success happens when the "mask" bits have the specified value (hardware + * handshake done). There are two failure modes: "usec" have passed (major + * hardware flakeout), or the register reads as all-ones (hardware removed). + * + * That last failure should_only happen in cases like physical cardbus eject + * before driver shutdown. But it also seems to be caused by bugs in cardbus + * bridge shutdown: shutting down the bridge before the devices using it. + */ +static int handshake(struct fotg210_hcd *fotg210, void __iomem *ptr, + u32 mask, u32 done, int usec) +{ + u32 result; + + do { + result = fotg210_readl(fotg210, ptr); + if (result == ~(u32)0) /* card removed */ + return -ENODEV; + result &= mask; + if (result == done) + return 0; + udelay(1); + usec--; + } while (usec > 0); + return -ETIMEDOUT; +} + +/* + * Force HC to halt state from unknown (EHCI spec section 2.3). + * Must be called with interrupts enabled and the lock not held. + */ +static int fotg210_halt(struct fotg210_hcd *fotg210) +{ + u32 temp; + + spin_lock_irq(&fotg210->lock); + + /* disable any irqs left enabled by previous code */ + fotg210_writel(fotg210, 0, &fotg210->regs->intr_enable); + + /* + * This routine gets called during probe before fotg210->command + * has been initialized, so we can't rely on its value. + */ + fotg210->command &= ~CMD_RUN; + temp = fotg210_readl(fotg210, &fotg210->regs->command); + temp &= ~(CMD_RUN | CMD_IAAD); + fotg210_writel(fotg210, temp, &fotg210->regs->command); + + spin_unlock_irq(&fotg210->lock); + synchronize_irq(fotg210_to_hcd(fotg210)->irq); + + return handshake(fotg210, &fotg210->regs->status, + STS_HALT, STS_HALT, 16 * 125); +} + +/* + * Reset a non-running (STS_HALT == 1) controller. + * Must be called with interrupts enabled and the lock not held. + */ +static int fotg210_reset(struct fotg210_hcd *fotg210) +{ + int retval; + u32 command = fotg210_readl(fotg210, &fotg210->regs->command); + + /* If the EHCI debug controller is active, special care must be + * taken before and after a host controller reset */ + if (fotg210->debug && !dbgp_reset_prep(fotg210_to_hcd(fotg210))) + fotg210->debug = NULL; + + command |= CMD_RESET; + dbg_cmd(fotg210, "reset", command); + fotg210_writel(fotg210, command, &fotg210->regs->command); + fotg210->rh_state = FOTG210_RH_HALTED; + fotg210->next_statechange = jiffies; + retval = handshake(fotg210, &fotg210->regs->command, + CMD_RESET, 0, 250 * 1000); + + if (retval) + return retval; + + if (fotg210->debug) + dbgp_external_startup(fotg210_to_hcd(fotg210)); + + fotg210->port_c_suspend = fotg210->suspended_ports = + fotg210->resuming_ports = 0; + return retval; +} + +/* + * Idle the controller (turn off the schedules). + * Must be called with interrupts enabled and the lock not held. + */ +static void fotg210_quiesce(struct fotg210_hcd *fotg210) +{ + u32 temp; + + if (fotg210->rh_state != FOTG210_RH_RUNNING) + return; + + /* wait for any schedule enables/disables to take effect */ + temp = (fotg210->command << 10) & (STS_ASS | STS_PSS); + handshake(fotg210, &fotg210->regs->status, STS_ASS | STS_PSS, temp, + 16 * 125); + + /* then disable anything that's still active */ + spin_lock_irq(&fotg210->lock); + fotg210->command &= ~(CMD_ASE | CMD_PSE); + fotg210_writel(fotg210, fotg210->command, &fotg210->regs->command); + spin_unlock_irq(&fotg210->lock); + + /* hardware can take 16 microframes to turn off ... */ + handshake(fotg210, &fotg210->regs->status, STS_ASS | STS_PSS, 0, + 16 * 125); +} + +/*-------------------------------------------------------------------------*/ + +static void end_unlink_async(struct fotg210_hcd *fotg210); +static void unlink_empty_async(struct fotg210_hcd *fotg210); +static void fotg210_work(struct fotg210_hcd *fotg210); +static void start_unlink_intr(struct fotg210_hcd *fotg210, + struct fotg210_qh *qh); +static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh); + +/*-------------------------------------------------------------------------*/ + +/* Set a bit in the USBCMD register */ +static void fotg210_set_command_bit(struct fotg210_hcd *fotg210, u32 bit) +{ + fotg210->command |= bit; + fotg210_writel(fotg210, fotg210->command, &fotg210->regs->command); + + /* unblock posted write */ + fotg210_readl(fotg210, &fotg210->regs->command); +} + +/* Clear a bit in the USBCMD register */ +static void fotg210_clear_command_bit(struct fotg210_hcd *fotg210, u32 bit) +{ + fotg210->command &= ~bit; + fotg210_writel(fotg210, fotg210->command, &fotg210->regs->command); + + /* unblock posted write */ + fotg210_readl(fotg210, &fotg210->regs->command); +} + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI timer support... Now using hrtimers. + * + * Lots of different events are triggered from fotg210->hrtimer. Whenever + * the timer routine runs, it checks each possible event; events that are + * currently enabled and whose expiration time has passed get handled. + * The set of enabled events is stored as a collection of bitflags in + * fotg210->enabled_hrtimer_events, and they are numbered in order of + * increasing delay values (ranging between 1 ms and 100 ms). + * + * Rather than implementing a sorted list or tree of all pending events, + * we keep track only of the lowest-numbered pending event, in + * fotg210->next_hrtimer_event. Whenever fotg210->hrtimer gets restarted, its + * expiration time is set to the timeout value for this event. + * + * As a result, events might not get handled right away; the actual delay + * could be anywhere up to twice the requested delay. This doesn't + * matter, because none of the events are especially time-critical. The + * ones that matter most all have a delay of 1 ms, so they will be + * handled after 2 ms at most, which is okay. In addition to this, we + * allow for an expiration range of 1 ms. + */ + +/* + * Delay lengths for the hrtimer event types. + * Keep this list sorted by delay length, in the same order as + * the event types indexed by enum fotg210_hrtimer_event in fotg210.h. + */ +static unsigned event_delays_ns[] = { + 1 * NSEC_PER_MSEC, /* FOTG210_HRTIMER_POLL_ASS */ + 1 * NSEC_PER_MSEC, /* FOTG210_HRTIMER_POLL_PSS */ + 1 * NSEC_PER_MSEC, /* FOTG210_HRTIMER_POLL_DEAD */ + 1125 * NSEC_PER_USEC, /* FOTG210_HRTIMER_UNLINK_INTR */ + 2 * NSEC_PER_MSEC, /* FOTG210_HRTIMER_FREE_ITDS */ + 6 * NSEC_PER_MSEC, /* FOTG210_HRTIMER_ASYNC_UNLINKS */ + 10 * NSEC_PER_MSEC, /* FOTG210_HRTIMER_IAA_WATCHDOG */ + 10 * NSEC_PER_MSEC, /* FOTG210_HRTIMER_DISABLE_PERIODIC */ + 15 * NSEC_PER_MSEC, /* FOTG210_HRTIMER_DISABLE_ASYNC */ + 100 * NSEC_PER_MSEC, /* FOTG210_HRTIMER_IO_WATCHDOG */ +}; + +/* Enable a pending hrtimer event */ +static void fotg210_enable_event(struct fotg210_hcd *fotg210, unsigned event, + bool resched) +{ + ktime_t *timeout = &fotg210->hr_timeouts[event]; + + if (resched) + *timeout = ktime_add(ktime_get(), + ktime_set(0, event_delays_ns[event])); + fotg210->enabled_hrtimer_events |= (1 << event); + + /* Track only the lowest-numbered pending event */ + if (event < fotg210->next_hrtimer_event) { + fotg210->next_hrtimer_event = event; + hrtimer_start_range_ns(&fotg210->hrtimer, *timeout, + NSEC_PER_MSEC, HRTIMER_MODE_ABS); + } +} + + +/* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */ +static void fotg210_poll_ASS(struct fotg210_hcd *fotg210) +{ + unsigned actual, want; + + /* Don't enable anything if the controller isn't running (e.g., died) */ + if (fotg210->rh_state != FOTG210_RH_RUNNING) + return; + + want = (fotg210->command & CMD_ASE) ? STS_ASS : 0; + actual = fotg210_readl(fotg210, &fotg210->regs->status) & STS_ASS; + + if (want != actual) { + + /* Poll again later, but give up after about 20 ms */ + if (fotg210->ASS_poll_count++ < 20) { + fotg210_enable_event(fotg210, FOTG210_HRTIMER_POLL_ASS, + true); + return; + } + fotg210_dbg(fotg210, "Waited too long for the async schedule status (%x/%x), giving up\n", + want, actual); + } + fotg210->ASS_poll_count = 0; + + /* The status is up-to-date; restart or stop the schedule as needed */ + if (want == 0) { /* Stopped */ + if (fotg210->async_count > 0) + fotg210_set_command_bit(fotg210, CMD_ASE); + + } else { /* Running */ + if (fotg210->async_count == 0) { + + /* Turn off the schedule after a while */ + fotg210_enable_event(fotg210, + FOTG210_HRTIMER_DISABLE_ASYNC, + true); + } + } +} + +/* Turn off the async schedule after a brief delay */ +static void fotg210_disable_ASE(struct fotg210_hcd *fotg210) +{ + fotg210_clear_command_bit(fotg210, CMD_ASE); +} + + +/* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */ +static void fotg210_poll_PSS(struct fotg210_hcd *fotg210) +{ + unsigned actual, want; + + /* Don't do anything if the controller isn't running (e.g., died) */ + if (fotg210->rh_state != FOTG210_RH_RUNNING) + return; + + want = (fotg210->command & CMD_PSE) ? STS_PSS : 0; + actual = fotg210_readl(fotg210, &fotg210->regs->status) & STS_PSS; + + if (want != actual) { + + /* Poll again later, but give up after about 20 ms */ + if (fotg210->PSS_poll_count++ < 20) { + fotg210_enable_event(fotg210, FOTG210_HRTIMER_POLL_PSS, + true); + return; + } + fotg210_dbg(fotg210, "Waited too long for the periodic schedule status (%x/%x), giving up\n", + want, actual); + } + fotg210->PSS_poll_count = 0; + + /* The status is up-to-date; restart or stop the schedule as needed */ + if (want == 0) { /* Stopped */ + if (fotg210->periodic_count > 0) + fotg210_set_command_bit(fotg210, CMD_PSE); + + } else { /* Running */ + if (fotg210->periodic_count == 0) { + + /* Turn off the schedule after a while */ + fotg210_enable_event(fotg210, + FOTG210_HRTIMER_DISABLE_PERIODIC, + true); + } + } +} + +/* Turn off the periodic schedule after a brief delay */ +static void fotg210_disable_PSE(struct fotg210_hcd *fotg210) +{ + fotg210_clear_command_bit(fotg210, CMD_PSE); +} + + +/* Poll the STS_HALT status bit; see when a dead controller stops */ +static void fotg210_handle_controller_death(struct fotg210_hcd *fotg210) +{ + if (!(fotg210_readl(fotg210, &fotg210->regs->status) & STS_HALT)) { + + /* Give up after a few milliseconds */ + if (fotg210->died_poll_count++ < 5) { + /* Try again later */ + fotg210_enable_event(fotg210, + FOTG210_HRTIMER_POLL_DEAD, true); + return; + } + fotg210_warn(fotg210, "Waited too long for the controller to stop, giving up\n"); + } + + /* Clean up the mess */ + fotg210->rh_state = FOTG210_RH_HALTED; + fotg210_writel(fotg210, 0, &fotg210->regs->intr_enable); + fotg210_work(fotg210); + end_unlink_async(fotg210); + + /* Not in process context, so don't try to reset the controller */ +} + + +/* Handle unlinked interrupt QHs once they are gone from the hardware */ +static void fotg210_handle_intr_unlinks(struct fotg210_hcd *fotg210) +{ + bool stopped = (fotg210->rh_state < FOTG210_RH_RUNNING); + + /* + * Process all the QHs on the intr_unlink list that were added + * before the current unlink cycle began. The list is in + * temporal order, so stop when we reach the first entry in the + * current cycle. But if the root hub isn't running then + * process all the QHs on the list. + */ + fotg210->intr_unlinking = true; + while (fotg210->intr_unlink) { + struct fotg210_qh *qh = fotg210->intr_unlink; + + if (!stopped && qh->unlink_cycle == fotg210->intr_unlink_cycle) + break; + fotg210->intr_unlink = qh->unlink_next; + qh->unlink_next = NULL; + end_unlink_intr(fotg210, qh); + } + + /* Handle remaining entries later */ + if (fotg210->intr_unlink) { + fotg210_enable_event(fotg210, FOTG210_HRTIMER_UNLINK_INTR, + true); + ++fotg210->intr_unlink_cycle; + } + fotg210->intr_unlinking = false; +} + + +/* Start another free-iTDs/siTDs cycle */ +static void start_free_itds(struct fotg210_hcd *fotg210) +{ + if (!(fotg210->enabled_hrtimer_events & + BIT(FOTG210_HRTIMER_FREE_ITDS))) { + fotg210->last_itd_to_free = list_entry( + fotg210->cached_itd_list.prev, + struct fotg210_itd, itd_list); + fotg210_enable_event(fotg210, FOTG210_HRTIMER_FREE_ITDS, true); + } +} + +/* Wait for controller to stop using old iTDs and siTDs */ +static void end_free_itds(struct fotg210_hcd *fotg210) +{ + struct fotg210_itd *itd, *n; + + if (fotg210->rh_state < FOTG210_RH_RUNNING) + fotg210->last_itd_to_free = NULL; + + list_for_each_entry_safe(itd, n, &fotg210->cached_itd_list, itd_list) { + list_del(&itd->itd_list); + dma_pool_free(fotg210->itd_pool, itd, itd->itd_dma); + if (itd == fotg210->last_itd_to_free) + break; + } + + if (!list_empty(&fotg210->cached_itd_list)) + start_free_itds(fotg210); +} + + +/* Handle lost (or very late) IAA interrupts */ +static void fotg210_iaa_watchdog(struct fotg210_hcd *fotg210) +{ + if (fotg210->rh_state != FOTG210_RH_RUNNING) + return; + + /* + * Lost IAA irqs wedge things badly; seen first with a vt8235. + * So we need this watchdog, but must protect it against both + * (a) SMP races against real IAA firing and retriggering, and + * (b) clean HC shutdown, when IAA watchdog was pending. + */ + if (fotg210->async_iaa) { + u32 cmd, status; + + /* If we get here, IAA is *REALLY* late. It's barely + * conceivable that the system is so busy that CMD_IAAD + * is still legitimately set, so let's be sure it's + * clear before we read STS_IAA. (The HC should clear + * CMD_IAAD when it sets STS_IAA.) + */ + cmd = fotg210_readl(fotg210, &fotg210->regs->command); + + /* + * If IAA is set here it either legitimately triggered + * after the watchdog timer expired (_way_ late, so we'll + * still count it as lost) ... or a silicon erratum: + * - VIA seems to set IAA without triggering the IRQ; + * - IAAD potentially cleared without setting IAA. + */ + status = fotg210_readl(fotg210, &fotg210->regs->status); + if ((status & STS_IAA) || !(cmd & CMD_IAAD)) { + COUNT(fotg210->stats.lost_iaa); + fotg210_writel(fotg210, STS_IAA, + &fotg210->regs->status); + } + + fotg210_vdbg(fotg210, "IAA watchdog: status %x cmd %x\n", + status, cmd); + end_unlink_async(fotg210); + } +} + + +/* Enable the I/O watchdog, if appropriate */ +static void turn_on_io_watchdog(struct fotg210_hcd *fotg210) +{ + /* Not needed if the controller isn't running or it's already enabled */ + if (fotg210->rh_state != FOTG210_RH_RUNNING || + (fotg210->enabled_hrtimer_events & + BIT(FOTG210_HRTIMER_IO_WATCHDOG))) + return; + + /* + * Isochronous transfers always need the watchdog. + * For other sorts we use it only if the flag is set. + */ + if (fotg210->isoc_count > 0 || (fotg210->need_io_watchdog && + fotg210->async_count + fotg210->intr_count > 0)) + fotg210_enable_event(fotg210, FOTG210_HRTIMER_IO_WATCHDOG, + true); +} + + +/* + * Handler functions for the hrtimer event types. + * Keep this array in the same order as the event types indexed by + * enum fotg210_hrtimer_event in fotg210.h. + */ +static void (*event_handlers[])(struct fotg210_hcd *) = { + fotg210_poll_ASS, /* FOTG210_HRTIMER_POLL_ASS */ + fotg210_poll_PSS, /* FOTG210_HRTIMER_POLL_PSS */ + fotg210_handle_controller_death, /* FOTG210_HRTIMER_POLL_DEAD */ + fotg210_handle_intr_unlinks, /* FOTG210_HRTIMER_UNLINK_INTR */ + end_free_itds, /* FOTG210_HRTIMER_FREE_ITDS */ + unlink_empty_async, /* FOTG210_HRTIMER_ASYNC_UNLINKS */ + fotg210_iaa_watchdog, /* FOTG210_HRTIMER_IAA_WATCHDOG */ + fotg210_disable_PSE, /* FOTG210_HRTIMER_DISABLE_PERIODIC */ + fotg210_disable_ASE, /* FOTG210_HRTIMER_DISABLE_ASYNC */ + fotg210_work, /* FOTG210_HRTIMER_IO_WATCHDOG */ +}; + +static enum hrtimer_restart fotg210_hrtimer_func(struct hrtimer *t) +{ + struct fotg210_hcd *fotg210 = + container_of(t, struct fotg210_hcd, hrtimer); + ktime_t now; + unsigned long events; + unsigned long flags; + unsigned e; + + spin_lock_irqsave(&fotg210->lock, flags); + + events = fotg210->enabled_hrtimer_events; + fotg210->enabled_hrtimer_events = 0; + fotg210->next_hrtimer_event = FOTG210_HRTIMER_NO_EVENT; + + /* + * Check each pending event. If its time has expired, handle + * the event; otherwise re-enable it. + */ + now = ktime_get(); + for_each_set_bit(e, &events, FOTG210_HRTIMER_NUM_EVENTS) { + if (now.tv64 >= fotg210->hr_timeouts[e].tv64) + event_handlers[e](fotg210); + else + fotg210_enable_event(fotg210, e, false); + } + + spin_unlock_irqrestore(&fotg210->lock, flags); + return HRTIMER_NORESTART; +} + +/*-------------------------------------------------------------------------*/ + +#define fotg210_bus_suspend NULL +#define fotg210_bus_resume NULL + +/*-------------------------------------------------------------------------*/ + +static int check_reset_complete( + struct fotg210_hcd *fotg210, + int index, + u32 __iomem *status_reg, + int port_status +) { + if (!(port_status & PORT_CONNECT)) + return port_status; + + /* if reset finished and it's still not enabled -- handoff */ + if (!(port_status & PORT_PE)) { + /* with integrated TT, there's nobody to hand it to! */ + fotg210_dbg(fotg210, + "Failed to enable port %d on root hub TT\n", + index+1); + return port_status; + } else { + fotg210_dbg(fotg210, "port %d reset complete, port enabled\n", + index + 1); + } + + return port_status; +} + +/*-------------------------------------------------------------------------*/ + + +/* build "status change" packet (one or two bytes) from HC registers */ + +static int +fotg210_hub_status_data(struct usb_hcd *hcd, char *buf) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + u32 temp, status; + u32 mask; + int retval = 1; + unsigned long flags; + + /* init status to no-changes */ + buf[0] = 0; + + /* Inform the core about resumes-in-progress by returning + * a non-zero value even if there are no status changes. + */ + status = fotg210->resuming_ports; + + mask = PORT_CSC | PORT_PEC; + /* PORT_RESUME from hardware ~= PORT_STAT_C_SUSPEND */ + + /* no hub change reports (bit 0) for now (power, ...) */ + + /* port N changes (bit N)? */ + spin_lock_irqsave(&fotg210->lock, flags); + + temp = fotg210_readl(fotg210, &fotg210->regs->port_status); + + /* + * Return status information even for ports with OWNER set. + * Otherwise khubd wouldn't see the disconnect event when a + * high-speed device is switched over to the companion + * controller by the user. + */ + + if ((temp & mask) != 0 || test_bit(0, &fotg210->port_c_suspend) + || (fotg210->reset_done[0] && time_after_eq( + jiffies, fotg210->reset_done[0]))) { + buf[0] |= 1 << 1; + status = STS_PCD; + } + /* FIXME autosuspend idle root hubs */ + spin_unlock_irqrestore(&fotg210->lock, flags); + return status ? retval : 0; +} + +/*-------------------------------------------------------------------------*/ + +static void +fotg210_hub_descriptor( + struct fotg210_hcd *fotg210, + struct usb_hub_descriptor *desc +) { + int ports = HCS_N_PORTS(fotg210->hcs_params); + u16 temp; + + desc->bDescriptorType = 0x29; + desc->bPwrOn2PwrGood = 10; /* fotg210 1.0, 2.3.9 says 20ms max */ + desc->bHubContrCurrent = 0; + + desc->bNbrPorts = ports; + temp = 1 + (ports / 8); + desc->bDescLength = 7 + 2 * temp; + + /* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */ + memset(&desc->u.hs.DeviceRemovable[0], 0, temp); + memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp); + + temp = 0x0008; /* per-port overcurrent reporting */ + temp |= 0x0002; /* no power switching */ + desc->wHubCharacteristics = cpu_to_le16(temp); +} + +/*-------------------------------------------------------------------------*/ + +static int fotg210_hub_control( + struct usb_hcd *hcd, + u16 typeReq, + u16 wValue, + u16 wIndex, + char *buf, + u16 wLength +) { + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + int ports = HCS_N_PORTS(fotg210->hcs_params); + u32 __iomem *status_reg = &fotg210->regs->port_status; + u32 temp, temp1, status; + unsigned long flags; + int retval = 0; + unsigned selector; + + /* + * FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR. + * HCS_INDICATOR may say we can change LEDs to off/amber/green. + * (track current state ourselves) ... blink for diagnostics, + * power, "this is the one", etc. EHCI spec supports this. + */ + + spin_lock_irqsave(&fotg210->lock, flags); + switch (typeReq) { + case ClearHubFeature: + switch (wValue) { + case C_HUB_LOCAL_POWER: + case C_HUB_OVER_CURRENT: + /* no hub-wide feature/status flags */ + break; + default: + goto error; + } + break; + case ClearPortFeature: + if (!wIndex || wIndex > ports) + goto error; + wIndex--; + temp = fotg210_readl(fotg210, status_reg); + temp &= ~PORT_RWC_BITS; + + /* + * Even if OWNER is set, so the port is owned by the + * companion controller, khubd needs to be able to clear + * the port-change status bits (especially + * USB_PORT_STAT_C_CONNECTION). + */ + + switch (wValue) { + case USB_PORT_FEAT_ENABLE: + fotg210_writel(fotg210, temp & ~PORT_PE, status_reg); + break; + case USB_PORT_FEAT_C_ENABLE: + fotg210_writel(fotg210, temp | PORT_PEC, status_reg); + break; + case USB_PORT_FEAT_SUSPEND: + if (temp & PORT_RESET) + goto error; + if (!(temp & PORT_SUSPEND)) + break; + if ((temp & PORT_PE) == 0) + goto error; + + /* resume signaling for 20 msec */ + fotg210_writel(fotg210, temp | PORT_RESUME, status_reg); + fotg210->reset_done[wIndex] = jiffies + + msecs_to_jiffies(20); + break; + case USB_PORT_FEAT_C_SUSPEND: + clear_bit(wIndex, &fotg210->port_c_suspend); + break; + case USB_PORT_FEAT_C_CONNECTION: + fotg210_writel(fotg210, temp | PORT_CSC, status_reg); + break; + case USB_PORT_FEAT_C_OVER_CURRENT: + fotg210_writel(fotg210, temp | OTGISR_OVC, + &fotg210->regs->otgisr); + break; + case USB_PORT_FEAT_C_RESET: + /* GetPortStatus clears reset */ + break; + default: + goto error; + } + fotg210_readl(fotg210, &fotg210->regs->command); + break; + case GetHubDescriptor: + fotg210_hub_descriptor(fotg210, (struct usb_hub_descriptor *) + buf); + break; + case GetHubStatus: + /* no hub-wide feature/status flags */ + memset(buf, 0, 4); + /*cpu_to_le32s ((u32 *) buf); */ + break; + case GetPortStatus: + if (!wIndex || wIndex > ports) + goto error; + wIndex--; + status = 0; + temp = fotg210_readl(fotg210, status_reg); + + /* wPortChange bits */ + if (temp & PORT_CSC) + status |= USB_PORT_STAT_C_CONNECTION << 16; + if (temp & PORT_PEC) + status |= USB_PORT_STAT_C_ENABLE << 16; + + temp1 = fotg210_readl(fotg210, &fotg210->regs->otgisr); + if (temp1 & OTGISR_OVC) + status |= USB_PORT_STAT_C_OVERCURRENT << 16; + + /* whoever resumes must GetPortStatus to complete it!! */ + if (temp & PORT_RESUME) { + + /* Remote Wakeup received? */ + if (!fotg210->reset_done[wIndex]) { + /* resume signaling for 20 msec */ + fotg210->reset_done[wIndex] = jiffies + + msecs_to_jiffies(20); + /* check the port again */ + mod_timer(&fotg210_to_hcd(fotg210)->rh_timer, + fotg210->reset_done[wIndex]); + } + + /* resume completed? */ + else if (time_after_eq(jiffies, + fotg210->reset_done[wIndex])) { + clear_bit(wIndex, &fotg210->suspended_ports); + set_bit(wIndex, &fotg210->port_c_suspend); + fotg210->reset_done[wIndex] = 0; + + /* stop resume signaling */ + temp = fotg210_readl(fotg210, status_reg); + fotg210_writel(fotg210, + temp & ~(PORT_RWC_BITS | PORT_RESUME), + status_reg); + clear_bit(wIndex, &fotg210->resuming_ports); + retval = handshake(fotg210, status_reg, + PORT_RESUME, 0, 2000 /* 2msec */); + if (retval != 0) { + fotg210_err(fotg210, + "port %d resume error %d\n", + wIndex + 1, retval); + goto error; + } + temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10)); + } + } + + /* whoever resets must GetPortStatus to complete it!! */ + if ((temp & PORT_RESET) + && time_after_eq(jiffies, + fotg210->reset_done[wIndex])) { + status |= USB_PORT_STAT_C_RESET << 16; + fotg210->reset_done[wIndex] = 0; + clear_bit(wIndex, &fotg210->resuming_ports); + + /* force reset to complete */ + fotg210_writel(fotg210, + temp & ~(PORT_RWC_BITS | PORT_RESET), + status_reg); + /* REVISIT: some hardware needs 550+ usec to clear + * this bit; seems too long to spin routinely... + */ + retval = handshake(fotg210, status_reg, + PORT_RESET, 0, 1000); + if (retval != 0) { + fotg210_err(fotg210, "port %d reset error %d\n", + wIndex + 1, retval); + goto error; + } + + /* see what we found out */ + temp = check_reset_complete(fotg210, wIndex, status_reg, + fotg210_readl(fotg210, status_reg)); + } + + if (!(temp & (PORT_RESUME|PORT_RESET))) { + fotg210->reset_done[wIndex] = 0; + clear_bit(wIndex, &fotg210->resuming_ports); + } + + /* transfer dedicated ports to the companion hc */ + if ((temp & PORT_CONNECT) && + test_bit(wIndex, &fotg210->companion_ports)) { + temp &= ~PORT_RWC_BITS; + fotg210_writel(fotg210, temp, status_reg); + fotg210_dbg(fotg210, "port %d --> companion\n", + wIndex + 1); + temp = fotg210_readl(fotg210, status_reg); + } + + /* + * Even if OWNER is set, there's no harm letting khubd + * see the wPortStatus values (they should all be 0 except + * for PORT_POWER anyway). + */ + + if (temp & PORT_CONNECT) { + status |= USB_PORT_STAT_CONNECTION; + status |= fotg210_port_speed(fotg210, temp); + } + if (temp & PORT_PE) + status |= USB_PORT_STAT_ENABLE; + + /* maybe the port was unsuspended without our knowledge */ + if (temp & (PORT_SUSPEND|PORT_RESUME)) { + status |= USB_PORT_STAT_SUSPEND; + } else if (test_bit(wIndex, &fotg210->suspended_ports)) { + clear_bit(wIndex, &fotg210->suspended_ports); + clear_bit(wIndex, &fotg210->resuming_ports); + fotg210->reset_done[wIndex] = 0; + if (temp & PORT_PE) + set_bit(wIndex, &fotg210->port_c_suspend); + } + + temp1 = fotg210_readl(fotg210, &fotg210->regs->otgisr); + if (temp1 & OTGISR_OVC) + status |= USB_PORT_STAT_OVERCURRENT; + if (temp & PORT_RESET) + status |= USB_PORT_STAT_RESET; + if (test_bit(wIndex, &fotg210->port_c_suspend)) + status |= USB_PORT_STAT_C_SUSPEND << 16; + +#ifndef VERBOSE_DEBUG + if (status & ~0xffff) /* only if wPortChange is interesting */ +#endif + dbg_port(fotg210, "GetStatus", wIndex + 1, temp); + put_unaligned_le32(status, buf); + break; + case SetHubFeature: + switch (wValue) { + case C_HUB_LOCAL_POWER: + case C_HUB_OVER_CURRENT: + /* no hub-wide feature/status flags */ + break; + default: + goto error; + } + break; + case SetPortFeature: + selector = wIndex >> 8; + wIndex &= 0xff; + + if (!wIndex || wIndex > ports) + goto error; + wIndex--; + temp = fotg210_readl(fotg210, status_reg); + temp &= ~PORT_RWC_BITS; + switch (wValue) { + case USB_PORT_FEAT_SUSPEND: + if ((temp & PORT_PE) == 0 + || (temp & PORT_RESET) != 0) + goto error; + + /* After above check the port must be connected. + * Set appropriate bit thus could put phy into low power + * mode if we have hostpc feature + */ + fotg210_writel(fotg210, temp | PORT_SUSPEND, + status_reg); + set_bit(wIndex, &fotg210->suspended_ports); + break; + case USB_PORT_FEAT_RESET: + if (temp & PORT_RESUME) + goto error; + /* line status bits may report this as low speed, + * which can be fine if this root hub has a + * transaction translator built in. + */ + fotg210_vdbg(fotg210, "port %d reset\n", wIndex + 1); + temp |= PORT_RESET; + temp &= ~PORT_PE; + + /* + * caller must wait, then call GetPortStatus + * usb 2.0 spec says 50 ms resets on root + */ + fotg210->reset_done[wIndex] = jiffies + + msecs_to_jiffies(50); + fotg210_writel(fotg210, temp, status_reg); + break; + + /* For downstream facing ports (these): one hub port is put + * into test mode according to USB2 11.24.2.13, then the hub + * must be reset (which for root hub now means rmmod+modprobe, + * or else system reboot). See EHCI 2.3.9 and 4.14 for info + * about the EHCI-specific stuff. + */ + case USB_PORT_FEAT_TEST: + if (!selector || selector > 5) + goto error; + spin_unlock_irqrestore(&fotg210->lock, flags); + fotg210_quiesce(fotg210); + spin_lock_irqsave(&fotg210->lock, flags); + + /* Put all enabled ports into suspend */ + temp = fotg210_readl(fotg210, status_reg) & + ~PORT_RWC_BITS; + if (temp & PORT_PE) + fotg210_writel(fotg210, temp | PORT_SUSPEND, + status_reg); + + spin_unlock_irqrestore(&fotg210->lock, flags); + fotg210_halt(fotg210); + spin_lock_irqsave(&fotg210->lock, flags); + + temp = fotg210_readl(fotg210, status_reg); + temp |= selector << 16; + fotg210_writel(fotg210, temp, status_reg); + break; + + default: + goto error; + } + fotg210_readl(fotg210, &fotg210->regs->command); + break; + + default: +error: + /* "stall" on error */ + retval = -EPIPE; + } + spin_unlock_irqrestore(&fotg210->lock, flags); + return retval; +} + +static void __maybe_unused fotg210_relinquish_port(struct usb_hcd *hcd, + int portnum) +{ + return; +} + +static int __maybe_unused fotg210_port_handed_over(struct usb_hcd *hcd, + int portnum) +{ + return 0; +} +/*-------------------------------------------------------------------------*/ +/* + * There's basically three types of memory: + * - data used only by the HCD ... kmalloc is fine + * - async and periodic schedules, shared by HC and HCD ... these + * need to use dma_pool or dma_alloc_coherent + * - driver buffers, read/written by HC ... single shot DMA mapped + * + * There's also "register" data (e.g. PCI or SOC), which is memory mapped. + * No memory seen by this driver is pageable. + */ + +/*-------------------------------------------------------------------------*/ + +/* Allocate the key transfer structures from the previously allocated pool */ + +static inline void fotg210_qtd_init(struct fotg210_hcd *fotg210, + struct fotg210_qtd *qtd, dma_addr_t dma) +{ + memset(qtd, 0, sizeof(*qtd)); + qtd->qtd_dma = dma; + qtd->hw_token = cpu_to_hc32(fotg210, QTD_STS_HALT); + qtd->hw_next = FOTG210_LIST_END(fotg210); + qtd->hw_alt_next = FOTG210_LIST_END(fotg210); + INIT_LIST_HEAD(&qtd->qtd_list); +} + +static struct fotg210_qtd *fotg210_qtd_alloc(struct fotg210_hcd *fotg210, + gfp_t flags) +{ + struct fotg210_qtd *qtd; + dma_addr_t dma; + + qtd = dma_pool_alloc(fotg210->qtd_pool, flags, &dma); + if (qtd != NULL) + fotg210_qtd_init(fotg210, qtd, dma); + + return qtd; +} + +static inline void fotg210_qtd_free(struct fotg210_hcd *fotg210, + struct fotg210_qtd *qtd) +{ + dma_pool_free(fotg210->qtd_pool, qtd, qtd->qtd_dma); +} + + +static void qh_destroy(struct fotg210_hcd *fotg210, struct fotg210_qh *qh) +{ + /* clean qtds first, and know this is not linked */ + if (!list_empty(&qh->qtd_list) || qh->qh_next.ptr) { + fotg210_dbg(fotg210, "unused qh not empty!\n"); + BUG(); + } + if (qh->dummy) + fotg210_qtd_free(fotg210, qh->dummy); + dma_pool_free(fotg210->qh_pool, qh->hw, qh->qh_dma); + kfree(qh); +} + +static struct fotg210_qh *fotg210_qh_alloc(struct fotg210_hcd *fotg210, + gfp_t flags) +{ + struct fotg210_qh *qh; + dma_addr_t dma; + + qh = kzalloc(sizeof(*qh), GFP_ATOMIC); + if (!qh) + goto done; + qh->hw = (struct fotg210_qh_hw *) + dma_pool_alloc(fotg210->qh_pool, flags, &dma); + if (!qh->hw) + goto fail; + memset(qh->hw, 0, sizeof(*qh->hw)); + qh->qh_dma = dma; + INIT_LIST_HEAD(&qh->qtd_list); + + /* dummy td enables safe urb queuing */ + qh->dummy = fotg210_qtd_alloc(fotg210, flags); + if (qh->dummy == NULL) { + fotg210_dbg(fotg210, "no dummy td\n"); + goto fail1; + } +done: + return qh; +fail1: + dma_pool_free(fotg210->qh_pool, qh->hw, qh->qh_dma); +fail: + kfree(qh); + return NULL; +} + +/*-------------------------------------------------------------------------*/ + +/* The queue heads and transfer descriptors are managed from pools tied + * to each of the "per device" structures. + * This is the initialisation and cleanup code. + */ + +static void fotg210_mem_cleanup(struct fotg210_hcd *fotg210) +{ + if (fotg210->async) + qh_destroy(fotg210, fotg210->async); + fotg210->async = NULL; + + if (fotg210->dummy) + qh_destroy(fotg210, fotg210->dummy); + fotg210->dummy = NULL; + + /* DMA consistent memory and pools */ + if (fotg210->qtd_pool) + dma_pool_destroy(fotg210->qtd_pool); + fotg210->qtd_pool = NULL; + + if (fotg210->qh_pool) { + dma_pool_destroy(fotg210->qh_pool); + fotg210->qh_pool = NULL; + } + + if (fotg210->itd_pool) + dma_pool_destroy(fotg210->itd_pool); + fotg210->itd_pool = NULL; + + if (fotg210->periodic) + dma_free_coherent(fotg210_to_hcd(fotg210)->self.controller, + fotg210->periodic_size * sizeof(u32), + fotg210->periodic, fotg210->periodic_dma); + fotg210->periodic = NULL; + + /* shadow periodic table */ + kfree(fotg210->pshadow); + fotg210->pshadow = NULL; +} + +/* remember to add cleanup code (above) if you add anything here */ +static int fotg210_mem_init(struct fotg210_hcd *fotg210, gfp_t flags) +{ + int i; + + /* QTDs for control/bulk/intr transfers */ + fotg210->qtd_pool = dma_pool_create("fotg210_qtd", + fotg210_to_hcd(fotg210)->self.controller, + sizeof(struct fotg210_qtd), + 32 /* byte alignment (for hw parts) */, + 4096 /* can't cross 4K */); + if (!fotg210->qtd_pool) + goto fail; + + /* QHs for control/bulk/intr transfers */ + fotg210->qh_pool = dma_pool_create("fotg210_qh", + fotg210_to_hcd(fotg210)->self.controller, + sizeof(struct fotg210_qh_hw), + 32 /* byte alignment (for hw parts) */, + 4096 /* can't cross 4K */); + if (!fotg210->qh_pool) + goto fail; + + fotg210->async = fotg210_qh_alloc(fotg210, flags); + if (!fotg210->async) + goto fail; + + /* ITD for high speed ISO transfers */ + fotg210->itd_pool = dma_pool_create("fotg210_itd", + fotg210_to_hcd(fotg210)->self.controller, + sizeof(struct fotg210_itd), + 64 /* byte alignment (for hw parts) */, + 4096 /* can't cross 4K */); + if (!fotg210->itd_pool) + goto fail; + + /* Hardware periodic table */ + fotg210->periodic = (__le32 *) + dma_alloc_coherent(fotg210_to_hcd(fotg210)->self.controller, + fotg210->periodic_size * sizeof(__le32), + &fotg210->periodic_dma, 0); + if (fotg210->periodic == NULL) + goto fail; + + for (i = 0; i < fotg210->periodic_size; i++) + fotg210->periodic[i] = FOTG210_LIST_END(fotg210); + + /* software shadow of hardware table */ + fotg210->pshadow = kcalloc(fotg210->periodic_size, sizeof(void *), + flags); + if (fotg210->pshadow != NULL) + return 0; + +fail: + fotg210_dbg(fotg210, "couldn't init memory\n"); + fotg210_mem_cleanup(fotg210); + return -ENOMEM; +} +/*-------------------------------------------------------------------------*/ +/* + * EHCI hardware queue manipulation ... the core. QH/QTD manipulation. + * + * Control, bulk, and interrupt traffic all use "qh" lists. They list "qtd" + * entries describing USB transactions, max 16-20kB/entry (with 4kB-aligned + * buffers needed for the larger number). We use one QH per endpoint, queue + * multiple urbs (all three types) per endpoint. URBs may need several qtds. + * + * ISO traffic uses "ISO TD" (itd) records, and (along with + * interrupts) needs careful scheduling. Performance improvements can be + * an ongoing challenge. That's in "ehci-sched.c". + * + * USB 1.1 devices are handled (a) by "companion" OHCI or UHCI root hubs, + * or otherwise through transaction translators (TTs) in USB 2.0 hubs using + * (b) special fields in qh entries or (c) split iso entries. TTs will + * buffer low/full speed data so the host collects it at high speed. + */ + +/*-------------------------------------------------------------------------*/ + +/* fill a qtd, returning how much of the buffer we were able to queue up */ + +static int +qtd_fill(struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd, dma_addr_t buf, + size_t len, int token, int maxpacket) +{ + int i, count; + u64 addr = buf; + + /* one buffer entry per 4K ... first might be short or unaligned */ + qtd->hw_buf[0] = cpu_to_hc32(fotg210, (u32)addr); + qtd->hw_buf_hi[0] = cpu_to_hc32(fotg210, (u32)(addr >> 32)); + count = 0x1000 - (buf & 0x0fff); /* rest of that page */ + if (likely(len < count)) /* ... iff needed */ + count = len; + else { + buf += 0x1000; + buf &= ~0x0fff; + + /* per-qtd limit: from 16K to 20K (best alignment) */ + for (i = 1; count < len && i < 5; i++) { + addr = buf; + qtd->hw_buf[i] = cpu_to_hc32(fotg210, (u32)addr); + qtd->hw_buf_hi[i] = cpu_to_hc32(fotg210, + (u32)(addr >> 32)); + buf += 0x1000; + if ((count + 0x1000) < len) + count += 0x1000; + else + count = len; + } + + /* short packets may only terminate transfers */ + if (count != len) + count -= (count % maxpacket); + } + qtd->hw_token = cpu_to_hc32(fotg210, (count << 16) | token); + qtd->length = count; + + return count; +} + +/*-------------------------------------------------------------------------*/ + +static inline void +qh_update(struct fotg210_hcd *fotg210, struct fotg210_qh *qh, + struct fotg210_qtd *qtd) +{ + struct fotg210_qh_hw *hw = qh->hw; + + /* writes to an active overlay are unsafe */ + BUG_ON(qh->qh_state != QH_STATE_IDLE); + + hw->hw_qtd_next = QTD_NEXT(fotg210, qtd->qtd_dma); + hw->hw_alt_next = FOTG210_LIST_END(fotg210); + + /* Except for control endpoints, we make hardware maintain data + * toggle (like OHCI) ... here (re)initialize the toggle in the QH, + * and set the pseudo-toggle in udev. Only usb_clear_halt() will + * ever clear it. + */ + if (!(hw->hw_info1 & cpu_to_hc32(fotg210, QH_TOGGLE_CTL))) { + unsigned is_out, epnum; + + is_out = qh->is_out; + epnum = (hc32_to_cpup(fotg210, &hw->hw_info1) >> 8) & 0x0f; + if (unlikely(!usb_gettoggle(qh->dev, epnum, is_out))) { + hw->hw_token &= ~cpu_to_hc32(fotg210, QTD_TOGGLE); + usb_settoggle(qh->dev, epnum, is_out, 1); + } + } + + hw->hw_token &= cpu_to_hc32(fotg210, QTD_TOGGLE | QTD_STS_PING); +} + +/* if it weren't for a common silicon quirk (writing the dummy into the qh + * overlay, so qh->hw_token wrongly becomes inactive/halted), only fault + * recovery (including urb dequeue) would need software changes to a QH... + */ +static void +qh_refresh(struct fotg210_hcd *fotg210, struct fotg210_qh *qh) +{ + struct fotg210_qtd *qtd; + + if (list_empty(&qh->qtd_list)) + qtd = qh->dummy; + else { + qtd = list_entry(qh->qtd_list.next, + struct fotg210_qtd, qtd_list); + /* + * first qtd may already be partially processed. + * If we come here during unlink, the QH overlay region + * might have reference to the just unlinked qtd. The + * qtd is updated in qh_completions(). Update the QH + * overlay here. + */ + if (cpu_to_hc32(fotg210, qtd->qtd_dma) == qh->hw->hw_current) { + qh->hw->hw_qtd_next = qtd->hw_next; + qtd = NULL; + } + } + + if (qtd) + qh_update(fotg210, qh, qtd); +} + +/*-------------------------------------------------------------------------*/ + +static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh); + +static void fotg210_clear_tt_buffer_complete(struct usb_hcd *hcd, + struct usb_host_endpoint *ep) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + struct fotg210_qh *qh = ep->hcpriv; + unsigned long flags; + + spin_lock_irqsave(&fotg210->lock, flags); + qh->clearing_tt = 0; + if (qh->qh_state == QH_STATE_IDLE && !list_empty(&qh->qtd_list) + && fotg210->rh_state == FOTG210_RH_RUNNING) + qh_link_async(fotg210, qh); + spin_unlock_irqrestore(&fotg210->lock, flags); +} + +static void fotg210_clear_tt_buffer(struct fotg210_hcd *fotg210, + struct fotg210_qh *qh, + struct urb *urb, u32 token) +{ + + /* If an async split transaction gets an error or is unlinked, + * the TT buffer may be left in an indeterminate state. We + * have to clear the TT buffer. + * + * Note: this routine is never called for Isochronous transfers. + */ + if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) { +#ifdef DEBUG + struct usb_device *tt = urb->dev->tt->hub; + dev_dbg(&tt->dev, + "clear tt buffer port %d, a%d ep%d t%08x\n", + urb->dev->ttport, urb->dev->devnum, + usb_pipeendpoint(urb->pipe), token); +#endif /* DEBUG */ + if (urb->dev->tt->hub != + fotg210_to_hcd(fotg210)->self.root_hub) { + if (usb_hub_clear_tt_buffer(urb) == 0) + qh->clearing_tt = 1; + } + } +} + +static int qtd_copy_status( + struct fotg210_hcd *fotg210, + struct urb *urb, + size_t length, + u32 token +) +{ + int status = -EINPROGRESS; + + /* count IN/OUT bytes, not SETUP (even short packets) */ + if (likely(QTD_PID(token) != 2)) + urb->actual_length += length - QTD_LENGTH(token); + + /* don't modify error codes */ + if (unlikely(urb->unlinked)) + return status; + + /* force cleanup after short read; not always an error */ + if (unlikely(IS_SHORT_READ(token))) + status = -EREMOTEIO; + + /* serious "can't proceed" faults reported by the hardware */ + if (token & QTD_STS_HALT) { + if (token & QTD_STS_BABBLE) { + /* FIXME "must" disable babbling device's port too */ + status = -EOVERFLOW; + /* CERR nonzero + halt --> stall */ + } else if (QTD_CERR(token)) { + status = -EPIPE; + + /* In theory, more than one of the following bits can be set + * since they are sticky and the transaction is retried. + * Which to test first is rather arbitrary. + */ + } else if (token & QTD_STS_MMF) { + /* fs/ls interrupt xfer missed the complete-split */ + status = -EPROTO; + } else if (token & QTD_STS_DBE) { + status = (QTD_PID(token) == 1) /* IN ? */ + ? -ENOSR /* hc couldn't read data */ + : -ECOMM; /* hc couldn't write data */ + } else if (token & QTD_STS_XACT) { + /* timeout, bad CRC, wrong PID, etc */ + fotg210_dbg(fotg210, "devpath %s ep%d%s 3strikes\n", + urb->dev->devpath, + usb_pipeendpoint(urb->pipe), + usb_pipein(urb->pipe) ? "in" : "out"); + status = -EPROTO; + } else { /* unknown */ + status = -EPROTO; + } + + fotg210_vdbg(fotg210, + "dev%d ep%d%s qtd token %08x --> status %d\n", + usb_pipedevice(urb->pipe), + usb_pipeendpoint(urb->pipe), + usb_pipein(urb->pipe) ? "in" : "out", + token, status); + } + + return status; +} + +static void +fotg210_urb_done(struct fotg210_hcd *fotg210, struct urb *urb, int status) +__releases(fotg210->lock) +__acquires(fotg210->lock) +{ + if (likely(urb->hcpriv != NULL)) { + struct fotg210_qh *qh = (struct fotg210_qh *) urb->hcpriv; + + /* S-mask in a QH means it's an interrupt urb */ + if ((qh->hw->hw_info2 & cpu_to_hc32(fotg210, QH_SMASK)) != 0) { + + /* ... update hc-wide periodic stats (for usbfs) */ + fotg210_to_hcd(fotg210)->self.bandwidth_int_reqs--; + } + } + + if (unlikely(urb->unlinked)) { + COUNT(fotg210->stats.unlink); + } else { + /* report non-error and short read status as zero */ + if (status == -EINPROGRESS || status == -EREMOTEIO) + status = 0; + COUNT(fotg210->stats.complete); + } + +#ifdef FOTG210_URB_TRACE + fotg210_dbg(fotg210, + "%s %s urb %p ep%d%s status %d len %d/%d\n", + __func__, urb->dev->devpath, urb, + usb_pipeendpoint(urb->pipe), + usb_pipein(urb->pipe) ? "in" : "out", + status, + urb->actual_length, urb->transfer_buffer_length); +#endif + + /* complete() can reenter this HCD */ + usb_hcd_unlink_urb_from_ep(fotg210_to_hcd(fotg210), urb); + spin_unlock(&fotg210->lock); + usb_hcd_giveback_urb(fotg210_to_hcd(fotg210), urb, status); + spin_lock(&fotg210->lock); +} + +static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh); + +/* + * Process and free completed qtds for a qh, returning URBs to drivers. + * Chases up to qh->hw_current. Returns number of completions called, + * indicating how much "real" work we did. + */ +static unsigned +qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh) +{ + struct fotg210_qtd *last, *end = qh->dummy; + struct list_head *entry, *tmp; + int last_status; + int stopped; + unsigned count = 0; + u8 state; + struct fotg210_qh_hw *hw = qh->hw; + + if (unlikely(list_empty(&qh->qtd_list))) + return count; + + /* completions (or tasks on other cpus) must never clobber HALT + * till we've gone through and cleaned everything up, even when + * they add urbs to this qh's queue or mark them for unlinking. + * + * NOTE: unlinking expects to be done in queue order. + * + * It's a bug for qh->qh_state to be anything other than + * QH_STATE_IDLE, unless our caller is scan_async() or + * scan_intr(). + */ + state = qh->qh_state; + qh->qh_state = QH_STATE_COMPLETING; + stopped = (state == QH_STATE_IDLE); + + rescan: + last = NULL; + last_status = -EINPROGRESS; + qh->needs_rescan = 0; + + /* remove de-activated QTDs from front of queue. + * after faults (including short reads), cleanup this urb + * then let the queue advance. + * if queue is stopped, handles unlinks. + */ + list_for_each_safe(entry, tmp, &qh->qtd_list) { + struct fotg210_qtd *qtd; + struct urb *urb; + u32 token = 0; + + qtd = list_entry(entry, struct fotg210_qtd, qtd_list); + urb = qtd->urb; + + /* clean up any state from previous QTD ...*/ + if (last) { + if (likely(last->urb != urb)) { + fotg210_urb_done(fotg210, last->urb, + last_status); + count++; + last_status = -EINPROGRESS; + } + fotg210_qtd_free(fotg210, last); + last = NULL; + } + + /* ignore urbs submitted during completions we reported */ + if (qtd == end) + break; + + /* hardware copies qtd out of qh overlay */ + rmb(); + token = hc32_to_cpu(fotg210, qtd->hw_token); + + /* always clean up qtds the hc de-activated */ + retry_xacterr: + if ((token & QTD_STS_ACTIVE) == 0) { + + /* Report Data Buffer Error: non-fatal but useful */ + if (token & QTD_STS_DBE) + fotg210_dbg(fotg210, + "detected DataBufferErr for urb %p ep%d%s len %d, qtd %p [qh %p]\n", + urb, + usb_endpoint_num(&urb->ep->desc), + usb_endpoint_dir_in(&urb->ep->desc) + ? "in" : "out", + urb->transfer_buffer_length, + qtd, + qh); + + /* on STALL, error, and short reads this urb must + * complete and all its qtds must be recycled. + */ + if ((token & QTD_STS_HALT) != 0) { + + /* retry transaction errors until we + * reach the software xacterr limit + */ + if ((token & QTD_STS_XACT) && + QTD_CERR(token) == 0 && + ++qh->xacterrs < QH_XACTERR_MAX && + !urb->unlinked) { + fotg210_dbg(fotg210, + "detected XactErr len %zu/%zu retry %d\n", + qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs); + + /* reset the token in the qtd and the + * qh overlay (which still contains + * the qtd) so that we pick up from + * where we left off + */ + token &= ~QTD_STS_HALT; + token |= QTD_STS_ACTIVE | + (FOTG210_TUNE_CERR << 10); + qtd->hw_token = cpu_to_hc32(fotg210, + token); + wmb(); + hw->hw_token = cpu_to_hc32(fotg210, + token); + goto retry_xacterr; + } + stopped = 1; + + /* magic dummy for some short reads; qh won't advance. + * that silicon quirk can kick in with this dummy too. + * + * other short reads won't stop the queue, including + * control transfers (status stage handles that) or + * most other single-qtd reads ... the queue stops if + * URB_SHORT_NOT_OK was set so the driver submitting + * the urbs could clean it up. + */ + } else if (IS_SHORT_READ(token) + && !(qtd->hw_alt_next + & FOTG210_LIST_END(fotg210))) { + stopped = 1; + } + + /* stop scanning when we reach qtds the hc is using */ + } else if (likely(!stopped + && fotg210->rh_state >= FOTG210_RH_RUNNING)) { + break; + + /* scan the whole queue for unlinks whenever it stops */ + } else { + stopped = 1; + + /* cancel everything if we halt, suspend, etc */ + if (fotg210->rh_state < FOTG210_RH_RUNNING) + last_status = -ESHUTDOWN; + + /* this qtd is active; skip it unless a previous qtd + * for its urb faulted, or its urb was canceled. + */ + else if (last_status == -EINPROGRESS && !urb->unlinked) + continue; + + /* qh unlinked; token in overlay may be most current */ + if (state == QH_STATE_IDLE + && cpu_to_hc32(fotg210, qtd->qtd_dma) + == hw->hw_current) { + token = hc32_to_cpu(fotg210, hw->hw_token); + + /* An unlink may leave an incomplete + * async transaction in the TT buffer. + * We have to clear it. + */ + fotg210_clear_tt_buffer(fotg210, qh, urb, + token); + } + } + + /* unless we already know the urb's status, collect qtd status + * and update count of bytes transferred. in common short read + * cases with only one data qtd (including control transfers), + * queue processing won't halt. but with two or more qtds (for + * example, with a 32 KB transfer), when the first qtd gets a + * short read the second must be removed by hand. + */ + if (last_status == -EINPROGRESS) { + last_status = qtd_copy_status(fotg210, urb, + qtd->length, token); + if (last_status == -EREMOTEIO + && (qtd->hw_alt_next + & FOTG210_LIST_END(fotg210))) + last_status = -EINPROGRESS; + + /* As part of low/full-speed endpoint-halt processing + * we must clear the TT buffer (11.17.5). + */ + if (unlikely(last_status != -EINPROGRESS && + last_status != -EREMOTEIO)) { + /* The TT's in some hubs malfunction when they + * receive this request following a STALL (they + * stop sending isochronous packets). Since a + * STALL can't leave the TT buffer in a busy + * state (if you believe Figures 11-48 - 11-51 + * in the USB 2.0 spec), we won't clear the TT + * buffer in this case. Strictly speaking this + * is a violation of the spec. + */ + if (last_status != -EPIPE) + fotg210_clear_tt_buffer(fotg210, qh, + urb, token); + } + } + + /* if we're removing something not at the queue head, + * patch the hardware queue pointer. + */ + if (stopped && qtd->qtd_list.prev != &qh->qtd_list) { + last = list_entry(qtd->qtd_list.prev, + struct fotg210_qtd, qtd_list); + last->hw_next = qtd->hw_next; + } + + /* remove qtd; it's recycled after possible urb completion */ + list_del(&qtd->qtd_list); + last = qtd; + + /* reinit the xacterr counter for the next qtd */ + qh->xacterrs = 0; + } + + /* last urb's completion might still need calling */ + if (likely(last != NULL)) { + fotg210_urb_done(fotg210, last->urb, last_status); + count++; + fotg210_qtd_free(fotg210, last); + } + + /* Do we need to rescan for URBs dequeued during a giveback? */ + if (unlikely(qh->needs_rescan)) { + /* If the QH is already unlinked, do the rescan now. */ + if (state == QH_STATE_IDLE) + goto rescan; + + /* Otherwise we have to wait until the QH is fully unlinked. + * Our caller will start an unlink if qh->needs_rescan is + * set. But if an unlink has already started, nothing needs + * to be done. + */ + if (state != QH_STATE_LINKED) + qh->needs_rescan = 0; + } + + /* restore original state; caller must unlink or relink */ + qh->qh_state = state; + + /* be sure the hardware's done with the qh before refreshing + * it after fault cleanup, or recovering from silicon wrongly + * overlaying the dummy qtd (which reduces DMA chatter). + */ + if (stopped != 0 || hw->hw_qtd_next == FOTG210_LIST_END(fotg210)) { + switch (state) { + case QH_STATE_IDLE: + qh_refresh(fotg210, qh); + break; + case QH_STATE_LINKED: + /* We won't refresh a QH that's linked (after the HC + * stopped the queue). That avoids a race: + * - HC reads first part of QH; + * - CPU updates that first part and the token; + * - HC reads rest of that QH, including token + * Result: HC gets an inconsistent image, and then + * DMAs to/from the wrong memory (corrupting it). + * + * That should be rare for interrupt transfers, + * except maybe high bandwidth ... + */ + + /* Tell the caller to start an unlink */ + qh->needs_rescan = 1; + break; + /* otherwise, unlink already started */ + } + } + + return count; +} + +/*-------------------------------------------------------------------------*/ + +/* high bandwidth multiplier, as encoded in highspeed endpoint descriptors */ +#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03)) +/* ... and packet size, for any kind of endpoint descriptor */ +#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff) + +/* + * reverse of qh_urb_transaction: free a list of TDs. + * used for cleanup after errors, before HC sees an URB's TDs. + */ +static void qtd_list_free( + struct fotg210_hcd *fotg210, + struct urb *urb, + struct list_head *qtd_list +) { + struct list_head *entry, *temp; + + list_for_each_safe(entry, temp, qtd_list) { + struct fotg210_qtd *qtd; + + qtd = list_entry(entry, struct fotg210_qtd, qtd_list); + list_del(&qtd->qtd_list); + fotg210_qtd_free(fotg210, qtd); + } +} + +/* + * create a list of filled qtds for this URB; won't link into qh. + */ +static struct list_head * +qh_urb_transaction( + struct fotg210_hcd *fotg210, + struct urb *urb, + struct list_head *head, + gfp_t flags +) { + struct fotg210_qtd *qtd, *qtd_prev; + dma_addr_t buf; + int len, this_sg_len, maxpacket; + int is_input; + u32 token; + int i; + struct scatterlist *sg; + + /* + * URBs map to sequences of QTDs: one logical transaction + */ + qtd = fotg210_qtd_alloc(fotg210, flags); + if (unlikely(!qtd)) + return NULL; + list_add_tail(&qtd->qtd_list, head); + qtd->urb = urb; + + token = QTD_STS_ACTIVE; + token |= (FOTG210_TUNE_CERR << 10); + /* for split transactions, SplitXState initialized to zero */ + + len = urb->transfer_buffer_length; + is_input = usb_pipein(urb->pipe); + if (usb_pipecontrol(urb->pipe)) { + /* SETUP pid */ + qtd_fill(fotg210, qtd, urb->setup_dma, + sizeof(struct usb_ctrlrequest), + token | (2 /* "setup" */ << 8), 8); + + /* ... and always at least one more pid */ + token ^= QTD_TOGGLE; + qtd_prev = qtd; + qtd = fotg210_qtd_alloc(fotg210, flags); + if (unlikely(!qtd)) + goto cleanup; + qtd->urb = urb; + qtd_prev->hw_next = QTD_NEXT(fotg210, qtd->qtd_dma); + list_add_tail(&qtd->qtd_list, head); + + /* for zero length DATA stages, STATUS is always IN */ + if (len == 0) + token |= (1 /* "in" */ << 8); + } + + /* + * data transfer stage: buffer setup + */ + i = urb->num_mapped_sgs; + if (len > 0 && i > 0) { + sg = urb->sg; + buf = sg_dma_address(sg); + + /* urb->transfer_buffer_length may be smaller than the + * size of the scatterlist (or vice versa) + */ + this_sg_len = min_t(int, sg_dma_len(sg), len); + } else { + sg = NULL; + buf = urb->transfer_dma; + this_sg_len = len; + } + + if (is_input) + token |= (1 /* "in" */ << 8); + /* else it's already initted to "out" pid (0 << 8) */ + + maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input)); + + /* + * buffer gets wrapped in one or more qtds; + * last one may be "short" (including zero len) + * and may serve as a control status ack + */ + for (;;) { + int this_qtd_len; + + this_qtd_len = qtd_fill(fotg210, qtd, buf, this_sg_len, token, + maxpacket); + this_sg_len -= this_qtd_len; + len -= this_qtd_len; + buf += this_qtd_len; + + /* + * short reads advance to a "magic" dummy instead of the next + * qtd ... that forces the queue to stop, for manual cleanup. + * (this will usually be overridden later.) + */ + if (is_input) + qtd->hw_alt_next = fotg210->async->hw->hw_alt_next; + + /* qh makes control packets use qtd toggle; maybe switch it */ + if ((maxpacket & (this_qtd_len + (maxpacket - 1))) == 0) + token ^= QTD_TOGGLE; + + if (likely(this_sg_len <= 0)) { + if (--i <= 0 || len <= 0) + break; + sg = sg_next(sg); + buf = sg_dma_address(sg); + this_sg_len = min_t(int, sg_dma_len(sg), len); + } + + qtd_prev = qtd; + qtd = fotg210_qtd_alloc(fotg210, flags); + if (unlikely(!qtd)) + goto cleanup; + qtd->urb = urb; + qtd_prev->hw_next = QTD_NEXT(fotg210, qtd->qtd_dma); + list_add_tail(&qtd->qtd_list, head); + } + + /* + * unless the caller requires manual cleanup after short reads, + * have the alt_next mechanism keep the queue running after the + * last data qtd (the only one, for control and most other cases). + */ + if (likely((urb->transfer_flags & URB_SHORT_NOT_OK) == 0 + || usb_pipecontrol(urb->pipe))) + qtd->hw_alt_next = FOTG210_LIST_END(fotg210); + + /* + * control requests may need a terminating data "status" ack; + * other OUT ones may need a terminating short packet + * (zero length). + */ + if (likely(urb->transfer_buffer_length != 0)) { + int one_more = 0; + + if (usb_pipecontrol(urb->pipe)) { + one_more = 1; + token ^= 0x0100; /* "in" <--> "out" */ + token |= QTD_TOGGLE; /* force DATA1 */ + } else if (usb_pipeout(urb->pipe) + && (urb->transfer_flags & URB_ZERO_PACKET) + && !(urb->transfer_buffer_length % maxpacket)) { + one_more = 1; + } + if (one_more) { + qtd_prev = qtd; + qtd = fotg210_qtd_alloc(fotg210, flags); + if (unlikely(!qtd)) + goto cleanup; + qtd->urb = urb; + qtd_prev->hw_next = QTD_NEXT(fotg210, qtd->qtd_dma); + list_add_tail(&qtd->qtd_list, head); + + /* never any data in such packets */ + qtd_fill(fotg210, qtd, 0, 0, token, 0); + } + } + + /* by default, enable interrupt on urb completion */ + if (likely(!(urb->transfer_flags & URB_NO_INTERRUPT))) + qtd->hw_token |= cpu_to_hc32(fotg210, QTD_IOC); + return head; + +cleanup: + qtd_list_free(fotg210, urb, head); + return NULL; +} + +/*-------------------------------------------------------------------------*/ +/* + * Would be best to create all qh's from config descriptors, + * when each interface/altsetting is established. Unlink + * any previous qh and cancel its urbs first; endpoints are + * implicitly reset then (data toggle too). + * That'd mean updating how usbcore talks to HCDs. (2.7?) +*/ + + +/* + * Each QH holds a qtd list; a QH is used for everything except iso. + * + * For interrupt urbs, the scheduler must set the microframe scheduling + * mask(s) each time the QH gets scheduled. For highspeed, that's + * just one microframe in the s-mask. For split interrupt transactions + * there are additional complications: c-mask, maybe FSTNs. + */ +static struct fotg210_qh * +qh_make( + struct fotg210_hcd *fotg210, + struct urb *urb, + gfp_t flags +) { + struct fotg210_qh *qh = fotg210_qh_alloc(fotg210, flags); + u32 info1 = 0, info2 = 0; + int is_input, type; + int maxp = 0; + struct usb_tt *tt = urb->dev->tt; + struct fotg210_qh_hw *hw; + + if (!qh) + return qh; + + /* + * init endpoint/device data for this QH + */ + info1 |= usb_pipeendpoint(urb->pipe) << 8; + info1 |= usb_pipedevice(urb->pipe) << 0; + + is_input = usb_pipein(urb->pipe); + type = usb_pipetype(urb->pipe); + maxp = usb_maxpacket(urb->dev, urb->pipe, !is_input); + + /* 1024 byte maxpacket is a hardware ceiling. High bandwidth + * acts like up to 3KB, but is built from smaller packets. + */ + if (max_packet(maxp) > 1024) { + fotg210_dbg(fotg210, "bogus qh maxpacket %d\n", + max_packet(maxp)); + goto done; + } + + /* Compute interrupt scheduling parameters just once, and save. + * - allowing for high bandwidth, how many nsec/uframe are used? + * - split transactions need a second CSPLIT uframe; same question + * - splits also need a schedule gap (for full/low speed I/O) + * - qh has a polling interval + * + * For control/bulk requests, the HC or TT handles these. + */ + if (type == PIPE_INTERRUPT) { + qh->usecs = NS_TO_US(usb_calc_bus_time(USB_SPEED_HIGH, + is_input, 0, + hb_mult(maxp) * max_packet(maxp))); + qh->start = NO_FRAME; + + if (urb->dev->speed == USB_SPEED_HIGH) { + qh->c_usecs = 0; + qh->gap_uf = 0; + + qh->period = urb->interval >> 3; + if (qh->period == 0 && urb->interval != 1) { + /* NOTE interval 2 or 4 uframes could work. + * But interval 1 scheduling is simpler, and + * includes high bandwidth. + */ + urb->interval = 1; + } else if (qh->period > fotg210->periodic_size) { + qh->period = fotg210->periodic_size; + urb->interval = qh->period << 3; + } + } else { + int think_time; + + /* gap is f(FS/LS transfer times) */ + qh->gap_uf = 1 + usb_calc_bus_time(urb->dev->speed, + is_input, 0, maxp) / (125 * 1000); + + /* FIXME this just approximates SPLIT/CSPLIT times */ + if (is_input) { /* SPLIT, gap, CSPLIT+DATA */ + qh->c_usecs = qh->usecs + HS_USECS(0); + qh->usecs = HS_USECS(1); + } else { /* SPLIT+DATA, gap, CSPLIT */ + qh->usecs += HS_USECS(1); + qh->c_usecs = HS_USECS(0); + } + + think_time = tt ? tt->think_time : 0; + qh->tt_usecs = NS_TO_US(think_time + + usb_calc_bus_time(urb->dev->speed, + is_input, 0, max_packet(maxp))); + qh->period = urb->interval; + if (qh->period > fotg210->periodic_size) { + qh->period = fotg210->periodic_size; + urb->interval = qh->period; + } + } + } + + /* support for tt scheduling, and access to toggles */ + qh->dev = urb->dev; + + /* using TT? */ + switch (urb->dev->speed) { + case USB_SPEED_LOW: + info1 |= QH_LOW_SPEED; + /* FALL THROUGH */ + + case USB_SPEED_FULL: + /* EPS 0 means "full" */ + if (type != PIPE_INTERRUPT) + info1 |= (FOTG210_TUNE_RL_TT << 28); + if (type == PIPE_CONTROL) { + info1 |= QH_CONTROL_EP; /* for TT */ + info1 |= QH_TOGGLE_CTL; /* toggle from qtd */ + } + info1 |= maxp << 16; + + info2 |= (FOTG210_TUNE_MULT_TT << 30); + + /* Some Freescale processors have an erratum in which the + * port number in the queue head was 0..N-1 instead of 1..N. + */ + if (fotg210_has_fsl_portno_bug(fotg210)) + info2 |= (urb->dev->ttport-1) << 23; + else + info2 |= urb->dev->ttport << 23; + + /* set the address of the TT; for TDI's integrated + * root hub tt, leave it zeroed. + */ + if (tt && tt->hub != fotg210_to_hcd(fotg210)->self.root_hub) + info2 |= tt->hub->devnum << 16; + + /* NOTE: if (PIPE_INTERRUPT) { scheduler sets c-mask } */ + + break; + + case USB_SPEED_HIGH: /* no TT involved */ + info1 |= QH_HIGH_SPEED; + if (type == PIPE_CONTROL) { + info1 |= (FOTG210_TUNE_RL_HS << 28); + info1 |= 64 << 16; /* usb2 fixed maxpacket */ + info1 |= QH_TOGGLE_CTL; /* toggle from qtd */ + info2 |= (FOTG210_TUNE_MULT_HS << 30); + } else if (type == PIPE_BULK) { + info1 |= (FOTG210_TUNE_RL_HS << 28); + /* The USB spec says that high speed bulk endpoints + * always use 512 byte maxpacket. But some device + * vendors decided to ignore that, and MSFT is happy + * to help them do so. So now people expect to use + * such nonconformant devices with Linux too; sigh. + */ + info1 |= max_packet(maxp) << 16; + info2 |= (FOTG210_TUNE_MULT_HS << 30); + } else { /* PIPE_INTERRUPT */ + info1 |= max_packet(maxp) << 16; + info2 |= hb_mult(maxp) << 30; + } + break; + default: + fotg210_dbg(fotg210, "bogus dev %p speed %d\n", urb->dev, + urb->dev->speed); +done: + qh_destroy(fotg210, qh); + return NULL; + } + + /* NOTE: if (PIPE_INTERRUPT) { scheduler sets s-mask } */ + + /* init as live, toggle clear, advance to dummy */ + qh->qh_state = QH_STATE_IDLE; + hw = qh->hw; + hw->hw_info1 = cpu_to_hc32(fotg210, info1); + hw->hw_info2 = cpu_to_hc32(fotg210, info2); + qh->is_out = !is_input; + usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), !is_input, 1); + qh_refresh(fotg210, qh); + return qh; +} + +/*-------------------------------------------------------------------------*/ + +static void enable_async(struct fotg210_hcd *fotg210) +{ + if (fotg210->async_count++) + return; + + /* Stop waiting to turn off the async schedule */ + fotg210->enabled_hrtimer_events &= ~BIT(FOTG210_HRTIMER_DISABLE_ASYNC); + + /* Don't start the schedule until ASS is 0 */ + fotg210_poll_ASS(fotg210); + turn_on_io_watchdog(fotg210); +} + +static void disable_async(struct fotg210_hcd *fotg210) +{ + if (--fotg210->async_count) + return; + + /* The async schedule and async_unlink list are supposed to be empty */ + WARN_ON(fotg210->async->qh_next.qh || fotg210->async_unlink); + + /* Don't turn off the schedule until ASS is 1 */ + fotg210_poll_ASS(fotg210); +} + +/* move qh (and its qtds) onto async queue; maybe enable queue. */ + +static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh) +{ + __hc32 dma = QH_NEXT(fotg210, qh->qh_dma); + struct fotg210_qh *head; + + /* Don't link a QH if there's a Clear-TT-Buffer pending */ + if (unlikely(qh->clearing_tt)) + return; + + WARN_ON(qh->qh_state != QH_STATE_IDLE); + + /* clear halt and/or toggle; and maybe recover from silicon quirk */ + qh_refresh(fotg210, qh); + + /* splice right after start */ + head = fotg210->async; + qh->qh_next = head->qh_next; + qh->hw->hw_next = head->hw->hw_next; + wmb(); + + head->qh_next.qh = qh; + head->hw->hw_next = dma; + + qh->xacterrs = 0; + qh->qh_state = QH_STATE_LINKED; + /* qtd completions reported later by interrupt */ + + enable_async(fotg210); +} + +/*-------------------------------------------------------------------------*/ + +/* + * For control/bulk/interrupt, return QH with these TDs appended. + * Allocates and initializes the QH if necessary. + * Returns null if it can't allocate a QH it needs to. + * If the QH has TDs (urbs) already, that's great. + */ +static struct fotg210_qh *qh_append_tds( + struct fotg210_hcd *fotg210, + struct urb *urb, + struct list_head *qtd_list, + int epnum, + void **ptr +) +{ + struct fotg210_qh *qh = NULL; + __hc32 qh_addr_mask = cpu_to_hc32(fotg210, 0x7f); + + qh = (struct fotg210_qh *) *ptr; + if (unlikely(qh == NULL)) { + /* can't sleep here, we have fotg210->lock... */ + qh = qh_make(fotg210, urb, GFP_ATOMIC); + *ptr = qh; + } + if (likely(qh != NULL)) { + struct fotg210_qtd *qtd; + + if (unlikely(list_empty(qtd_list))) + qtd = NULL; + else + qtd = list_entry(qtd_list->next, struct fotg210_qtd, + qtd_list); + + /* control qh may need patching ... */ + if (unlikely(epnum == 0)) { + /* usb_reset_device() briefly reverts to address 0 */ + if (usb_pipedevice(urb->pipe) == 0) + qh->hw->hw_info1 &= ~qh_addr_mask; + } + + /* just one way to queue requests: swap with the dummy qtd. + * only hc or qh_refresh() ever modify the overlay. + */ + if (likely(qtd != NULL)) { + struct fotg210_qtd *dummy; + dma_addr_t dma; + __hc32 token; + + /* to avoid racing the HC, use the dummy td instead of + * the first td of our list (becomes new dummy). both + * tds stay deactivated until we're done, when the + * HC is allowed to fetch the old dummy (4.10.2). + */ + token = qtd->hw_token; + qtd->hw_token = HALT_BIT(fotg210); + + dummy = qh->dummy; + + dma = dummy->qtd_dma; + *dummy = *qtd; + dummy->qtd_dma = dma; + + list_del(&qtd->qtd_list); + list_add(&dummy->qtd_list, qtd_list); + list_splice_tail(qtd_list, &qh->qtd_list); + + fotg210_qtd_init(fotg210, qtd, qtd->qtd_dma); + qh->dummy = qtd; + + /* hc must see the new dummy at list end */ + dma = qtd->qtd_dma; + qtd = list_entry(qh->qtd_list.prev, + struct fotg210_qtd, qtd_list); + qtd->hw_next = QTD_NEXT(fotg210, dma); + + /* let the hc process these next qtds */ + wmb(); + dummy->hw_token = token; + + urb->hcpriv = qh; + } + } + return qh; +} + +/*-------------------------------------------------------------------------*/ + +static int +submit_async( + struct fotg210_hcd *fotg210, + struct urb *urb, + struct list_head *qtd_list, + gfp_t mem_flags +) { + int epnum; + unsigned long flags; + struct fotg210_qh *qh = NULL; + int rc; + + epnum = urb->ep->desc.bEndpointAddress; + +#ifdef FOTG210_URB_TRACE + { + struct fotg210_qtd *qtd; + qtd = list_entry(qtd_list->next, struct fotg210_qtd, qtd_list); + fotg210_dbg(fotg210, + "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n", + __func__, urb->dev->devpath, urb, + epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out", + urb->transfer_buffer_length, + qtd, urb->ep->hcpriv); + } +#endif + + spin_lock_irqsave(&fotg210->lock, flags); + if (unlikely(!HCD_HW_ACCESSIBLE(fotg210_to_hcd(fotg210)))) { + rc = -ESHUTDOWN; + goto done; + } + rc = usb_hcd_link_urb_to_ep(fotg210_to_hcd(fotg210), urb); + if (unlikely(rc)) + goto done; + + qh = qh_append_tds(fotg210, urb, qtd_list, epnum, &urb->ep->hcpriv); + if (unlikely(qh == NULL)) { + usb_hcd_unlink_urb_from_ep(fotg210_to_hcd(fotg210), urb); + rc = -ENOMEM; + goto done; + } + + /* Control/bulk operations through TTs don't need scheduling, + * the HC and TT handle it when the TT has a buffer ready. + */ + if (likely(qh->qh_state == QH_STATE_IDLE)) + qh_link_async(fotg210, qh); + done: + spin_unlock_irqrestore(&fotg210->lock, flags); + if (unlikely(qh == NULL)) + qtd_list_free(fotg210, urb, qtd_list); + return rc; +} + +/*-------------------------------------------------------------------------*/ + +static void single_unlink_async(struct fotg210_hcd *fotg210, + struct fotg210_qh *qh) +{ + struct fotg210_qh *prev; + + /* Add to the end of the list of QHs waiting for the next IAAD */ + qh->qh_state = QH_STATE_UNLINK; + if (fotg210->async_unlink) + fotg210->async_unlink_last->unlink_next = qh; + else + fotg210->async_unlink = qh; + fotg210->async_unlink_last = qh; + + /* Unlink it from the schedule */ + prev = fotg210->async; + while (prev->qh_next.qh != qh) + prev = prev->qh_next.qh; + + prev->hw->hw_next = qh->hw->hw_next; + prev->qh_next = qh->qh_next; + if (fotg210->qh_scan_next == qh) + fotg210->qh_scan_next = qh->qh_next.qh; +} + +static void start_iaa_cycle(struct fotg210_hcd *fotg210, bool nested) +{ + /* + * Do nothing if an IAA cycle is already running or + * if one will be started shortly. + */ + if (fotg210->async_iaa || fotg210->async_unlinking) + return; + + /* Do all the waiting QHs at once */ + fotg210->async_iaa = fotg210->async_unlink; + fotg210->async_unlink = NULL; + + /* If the controller isn't running, we don't have to wait for it */ + if (unlikely(fotg210->rh_state < FOTG210_RH_RUNNING)) { + if (!nested) /* Avoid recursion */ + end_unlink_async(fotg210); + + /* Otherwise start a new IAA cycle */ + } else if (likely(fotg210->rh_state == FOTG210_RH_RUNNING)) { + /* Make sure the unlinks are all visible to the hardware */ + wmb(); + + fotg210_writel(fotg210, fotg210->command | CMD_IAAD, + &fotg210->regs->command); + fotg210_readl(fotg210, &fotg210->regs->command); + fotg210_enable_event(fotg210, FOTG210_HRTIMER_IAA_WATCHDOG, + true); + } +} + +/* the async qh for the qtds being unlinked are now gone from the HC */ + +static void end_unlink_async(struct fotg210_hcd *fotg210) +{ + struct fotg210_qh *qh; + + /* Process the idle QHs */ + restart: + fotg210->async_unlinking = true; + while (fotg210->async_iaa) { + qh = fotg210->async_iaa; + fotg210->async_iaa = qh->unlink_next; + qh->unlink_next = NULL; + + qh->qh_state = QH_STATE_IDLE; + qh->qh_next.qh = NULL; + + qh_completions(fotg210, qh); + if (!list_empty(&qh->qtd_list) && + fotg210->rh_state == FOTG210_RH_RUNNING) + qh_link_async(fotg210, qh); + disable_async(fotg210); + } + fotg210->async_unlinking = false; + + /* Start a new IAA cycle if any QHs are waiting for it */ + if (fotg210->async_unlink) { + start_iaa_cycle(fotg210, true); + if (unlikely(fotg210->rh_state < FOTG210_RH_RUNNING)) + goto restart; + } +} + +static void unlink_empty_async(struct fotg210_hcd *fotg210) +{ + struct fotg210_qh *qh, *next; + bool stopped = (fotg210->rh_state < FOTG210_RH_RUNNING); + bool check_unlinks_later = false; + + /* Unlink all the async QHs that have been empty for a timer cycle */ + next = fotg210->async->qh_next.qh; + while (next) { + qh = next; + next = qh->qh_next.qh; + + if (list_empty(&qh->qtd_list) && + qh->qh_state == QH_STATE_LINKED) { + if (!stopped && qh->unlink_cycle == + fotg210->async_unlink_cycle) + check_unlinks_later = true; + else + single_unlink_async(fotg210, qh); + } + } + + /* Start a new IAA cycle if any QHs are waiting for it */ + if (fotg210->async_unlink) + start_iaa_cycle(fotg210, false); + + /* QHs that haven't been empty for long enough will be handled later */ + if (check_unlinks_later) { + fotg210_enable_event(fotg210, FOTG210_HRTIMER_ASYNC_UNLINKS, + true); + ++fotg210->async_unlink_cycle; + } +} + +/* makes sure the async qh will become idle */ +/* caller must own fotg210->lock */ + +static void start_unlink_async(struct fotg210_hcd *fotg210, + struct fotg210_qh *qh) +{ + /* + * If the QH isn't linked then there's nothing we can do + * unless we were called during a giveback, in which case + * qh_completions() has to deal with it. + */ + if (qh->qh_state != QH_STATE_LINKED) { + if (qh->qh_state == QH_STATE_COMPLETING) + qh->needs_rescan = 1; + return; + } + + single_unlink_async(fotg210, qh); + start_iaa_cycle(fotg210, false); +} + +/*-------------------------------------------------------------------------*/ + +static void scan_async(struct fotg210_hcd *fotg210) +{ + struct fotg210_qh *qh; + bool check_unlinks_later = false; + + fotg210->qh_scan_next = fotg210->async->qh_next.qh; + while (fotg210->qh_scan_next) { + qh = fotg210->qh_scan_next; + fotg210->qh_scan_next = qh->qh_next.qh; + rescan: + /* clean any finished work for this qh */ + if (!list_empty(&qh->qtd_list)) { + int temp; + + /* + * Unlinks could happen here; completion reporting + * drops the lock. That's why fotg210->qh_scan_next + * always holds the next qh to scan; if the next qh + * gets unlinked then fotg210->qh_scan_next is adjusted + * in single_unlink_async(). + */ + temp = qh_completions(fotg210, qh); + if (qh->needs_rescan) { + start_unlink_async(fotg210, qh); + } else if (list_empty(&qh->qtd_list) + && qh->qh_state == QH_STATE_LINKED) { + qh->unlink_cycle = fotg210->async_unlink_cycle; + check_unlinks_later = true; + } else if (temp != 0) + goto rescan; + } + } + + /* + * Unlink empty entries, reducing DMA usage as well + * as HCD schedule-scanning costs. Delay for any qh + * we just scanned, there's a not-unusual case that it + * doesn't stay idle for long. + */ + if (check_unlinks_later && fotg210->rh_state == FOTG210_RH_RUNNING && + !(fotg210->enabled_hrtimer_events & + BIT(FOTG210_HRTIMER_ASYNC_UNLINKS))) { + fotg210_enable_event(fotg210, + FOTG210_HRTIMER_ASYNC_UNLINKS, true); + ++fotg210->async_unlink_cycle; + } +} +/*-------------------------------------------------------------------------*/ +/* + * EHCI scheduled transaction support: interrupt, iso, split iso + * These are called "periodic" transactions in the EHCI spec. + * + * Note that for interrupt transfers, the QH/QTD manipulation is shared + * with the "asynchronous" transaction support (control/bulk transfers). + * The only real difference is in how interrupt transfers are scheduled. + * + * For ISO, we make an "iso_stream" head to serve the same role as a QH. + * It keeps track of every ITD (or SITD) that's linked, and holds enough + * pre-calculated schedule data to make appending to the queue be quick. + */ + +static int fotg210_get_frame(struct usb_hcd *hcd); + +/*-------------------------------------------------------------------------*/ + +/* + * periodic_next_shadow - return "next" pointer on shadow list + * @periodic: host pointer to qh/itd + * @tag: hardware tag for type of this record + */ +static union fotg210_shadow * +periodic_next_shadow(struct fotg210_hcd *fotg210, + union fotg210_shadow *periodic, __hc32 tag) +{ + switch (hc32_to_cpu(fotg210, tag)) { + case Q_TYPE_QH: + return &periodic->qh->qh_next; + case Q_TYPE_FSTN: + return &periodic->fstn->fstn_next; + default: + return &periodic->itd->itd_next; + } +} + +static __hc32 * +shadow_next_periodic(struct fotg210_hcd *fotg210, + union fotg210_shadow *periodic, __hc32 tag) +{ + switch (hc32_to_cpu(fotg210, tag)) { + /* our fotg210_shadow.qh is actually software part */ + case Q_TYPE_QH: + return &periodic->qh->hw->hw_next; + /* others are hw parts */ + default: + return periodic->hw_next; + } +} + +/* caller must hold fotg210->lock */ +static void periodic_unlink(struct fotg210_hcd *fotg210, unsigned frame, + void *ptr) +{ + union fotg210_shadow *prev_p = &fotg210->pshadow[frame]; + __hc32 *hw_p = &fotg210->periodic[frame]; + union fotg210_shadow here = *prev_p; + + /* find predecessor of "ptr"; hw and shadow lists are in sync */ + while (here.ptr && here.ptr != ptr) { + prev_p = periodic_next_shadow(fotg210, prev_p, + Q_NEXT_TYPE(fotg210, *hw_p)); + hw_p = shadow_next_periodic(fotg210, &here, + Q_NEXT_TYPE(fotg210, *hw_p)); + here = *prev_p; + } + /* an interrupt entry (at list end) could have been shared */ + if (!here.ptr) + return; + + /* update shadow and hardware lists ... the old "next" pointers + * from ptr may still be in use, the caller updates them. + */ + *prev_p = *periodic_next_shadow(fotg210, &here, + Q_NEXT_TYPE(fotg210, *hw_p)); + + *hw_p = *shadow_next_periodic(fotg210, &here, + Q_NEXT_TYPE(fotg210, *hw_p)); +} + +/* how many of the uframe's 125 usecs are allocated? */ +static unsigned short +periodic_usecs(struct fotg210_hcd *fotg210, unsigned frame, unsigned uframe) +{ + __hc32 *hw_p = &fotg210->periodic[frame]; + union fotg210_shadow *q = &fotg210->pshadow[frame]; + unsigned usecs = 0; + struct fotg210_qh_hw *hw; + + while (q->ptr) { + switch (hc32_to_cpu(fotg210, Q_NEXT_TYPE(fotg210, *hw_p))) { + case Q_TYPE_QH: + hw = q->qh->hw; + /* is it in the S-mask? */ + if (hw->hw_info2 & cpu_to_hc32(fotg210, 1 << uframe)) + usecs += q->qh->usecs; + /* ... or C-mask? */ + if (hw->hw_info2 & cpu_to_hc32(fotg210, + 1 << (8 + uframe))) + usecs += q->qh->c_usecs; + hw_p = &hw->hw_next; + q = &q->qh->qh_next; + break; + /* case Q_TYPE_FSTN: */ + default: + /* for "save place" FSTNs, count the relevant INTR + * bandwidth from the previous frame + */ + if (q->fstn->hw_prev != FOTG210_LIST_END(fotg210)) + fotg210_dbg(fotg210, "ignoring FSTN cost ...\n"); + + hw_p = &q->fstn->hw_next; + q = &q->fstn->fstn_next; + break; + case Q_TYPE_ITD: + if (q->itd->hw_transaction[uframe]) + usecs += q->itd->stream->usecs; + hw_p = &q->itd->hw_next; + q = &q->itd->itd_next; + break; + } + } +#ifdef DEBUG + if (usecs > fotg210->uframe_periodic_max) + fotg210_err(fotg210, "uframe %d sched overrun: %d usecs\n", + frame * 8 + uframe, usecs); +#endif + return usecs; +} + +/*-------------------------------------------------------------------------*/ + +static int same_tt(struct usb_device *dev1, struct usb_device *dev2) +{ + if (!dev1->tt || !dev2->tt) + return 0; + if (dev1->tt != dev2->tt) + return 0; + if (dev1->tt->multi) + return dev1->ttport == dev2->ttport; + else + return 1; +} + +/* return true iff the device's transaction translator is available + * for a periodic transfer starting at the specified frame, using + * all the uframes in the mask. + */ +static int tt_no_collision( + struct fotg210_hcd *fotg210, + unsigned period, + struct usb_device *dev, + unsigned frame, + u32 uf_mask +) +{ + if (period == 0) /* error */ + return 0; + + /* note bandwidth wastage: split never follows csplit + * (different dev or endpoint) until the next uframe. + * calling convention doesn't make that distinction. + */ + for (; frame < fotg210->periodic_size; frame += period) { + union fotg210_shadow here; + __hc32 type; + struct fotg210_qh_hw *hw; + + here = fotg210->pshadow[frame]; + type = Q_NEXT_TYPE(fotg210, fotg210->periodic[frame]); + while (here.ptr) { + switch (hc32_to_cpu(fotg210, type)) { + case Q_TYPE_ITD: + type = Q_NEXT_TYPE(fotg210, here.itd->hw_next); + here = here.itd->itd_next; + continue; + case Q_TYPE_QH: + hw = here.qh->hw; + if (same_tt(dev, here.qh->dev)) { + u32 mask; + + mask = hc32_to_cpu(fotg210, + hw->hw_info2); + /* "knows" no gap is needed */ + mask |= mask >> 8; + if (mask & uf_mask) + break; + } + type = Q_NEXT_TYPE(fotg210, hw->hw_next); + here = here.qh->qh_next; + continue; + /* case Q_TYPE_FSTN: */ + default: + fotg210_dbg(fotg210, + "periodic frame %d bogus type %d\n", + frame, type); + } + + /* collision or error */ + return 0; + } + } + + /* no collision */ + return 1; +} + +/*-------------------------------------------------------------------------*/ + +static void enable_periodic(struct fotg210_hcd *fotg210) +{ + if (fotg210->periodic_count++) + return; + + /* Stop waiting to turn off the periodic schedule */ + fotg210->enabled_hrtimer_events &= + ~BIT(FOTG210_HRTIMER_DISABLE_PERIODIC); + + /* Don't start the schedule until PSS is 0 */ + fotg210_poll_PSS(fotg210); + turn_on_io_watchdog(fotg210); +} + +static void disable_periodic(struct fotg210_hcd *fotg210) +{ + if (--fotg210->periodic_count) + return; + + /* Don't turn off the schedule until PSS is 1 */ + fotg210_poll_PSS(fotg210); +} + +/*-------------------------------------------------------------------------*/ + +/* periodic schedule slots have iso tds (normal or split) first, then a + * sparse tree for active interrupt transfers. + * + * this just links in a qh; caller guarantees uframe masks are set right. + * no FSTN support (yet; fotg210 0.96+) + */ +static void qh_link_periodic(struct fotg210_hcd *fotg210, struct fotg210_qh *qh) +{ + unsigned i; + unsigned period = qh->period; + + dev_dbg(&qh->dev->dev, + "link qh%d-%04x/%p start %d [%d/%d us]\n", + period, hc32_to_cpup(fotg210, &qh->hw->hw_info2) + & (QH_CMASK | QH_SMASK), + qh, qh->start, qh->usecs, qh->c_usecs); + + /* high bandwidth, or otherwise every microframe */ + if (period == 0) + period = 1; + + for (i = qh->start; i < fotg210->periodic_size; i += period) { + union fotg210_shadow *prev = &fotg210->pshadow[i]; + __hc32 *hw_p = &fotg210->periodic[i]; + union fotg210_shadow here = *prev; + __hc32 type = 0; + + /* skip the iso nodes at list head */ + while (here.ptr) { + type = Q_NEXT_TYPE(fotg210, *hw_p); + if (type == cpu_to_hc32(fotg210, Q_TYPE_QH)) + break; + prev = periodic_next_shadow(fotg210, prev, type); + hw_p = shadow_next_periodic(fotg210, &here, type); + here = *prev; + } + + /* sorting each branch by period (slow-->fast) + * enables sharing interior tree nodes + */ + while (here.ptr && qh != here.qh) { + if (qh->period > here.qh->period) + break; + prev = &here.qh->qh_next; + hw_p = &here.qh->hw->hw_next; + here = *prev; + } + /* link in this qh, unless some earlier pass did that */ + if (qh != here.qh) { + qh->qh_next = here; + if (here.qh) + qh->hw->hw_next = *hw_p; + wmb(); + prev->qh = qh; + *hw_p = QH_NEXT(fotg210, qh->qh_dma); + } + } + qh->qh_state = QH_STATE_LINKED; + qh->xacterrs = 0; + + /* update per-qh bandwidth for usbfs */ + fotg210_to_hcd(fotg210)->self.bandwidth_allocated += qh->period + ? ((qh->usecs + qh->c_usecs) / qh->period) + : (qh->usecs * 8); + + list_add(&qh->intr_node, &fotg210->intr_qh_list); + + /* maybe enable periodic schedule processing */ + ++fotg210->intr_count; + enable_periodic(fotg210); +} + +static void qh_unlink_periodic(struct fotg210_hcd *fotg210, + struct fotg210_qh *qh) +{ + unsigned i; + unsigned period; + + /* + * If qh is for a low/full-speed device, simply unlinking it + * could interfere with an ongoing split transaction. To unlink + * it safely would require setting the QH_INACTIVATE bit and + * waiting at least one frame, as described in EHCI 4.12.2.5. + * + * We won't bother with any of this. Instead, we assume that the + * only reason for unlinking an interrupt QH while the current URB + * is still active is to dequeue all the URBs (flush the whole + * endpoint queue). + * + * If rebalancing the periodic schedule is ever implemented, this + * approach will no longer be valid. + */ + + /* high bandwidth, or otherwise part of every microframe */ + period = qh->period; + if (!period) + period = 1; + + for (i = qh->start; i < fotg210->periodic_size; i += period) + periodic_unlink(fotg210, i, qh); + + /* update per-qh bandwidth for usbfs */ + fotg210_to_hcd(fotg210)->self.bandwidth_allocated -= qh->period + ? ((qh->usecs + qh->c_usecs) / qh->period) + : (qh->usecs * 8); + + dev_dbg(&qh->dev->dev, + "unlink qh%d-%04x/%p start %d [%d/%d us]\n", + qh->period, + hc32_to_cpup(fotg210, &qh->hw->hw_info2) & + (QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs, qh->c_usecs); + + /* qh->qh_next still "live" to HC */ + qh->qh_state = QH_STATE_UNLINK; + qh->qh_next.ptr = NULL; + + if (fotg210->qh_scan_next == qh) + fotg210->qh_scan_next = list_entry(qh->intr_node.next, + struct fotg210_qh, intr_node); + list_del(&qh->intr_node); +} + +static void start_unlink_intr(struct fotg210_hcd *fotg210, + struct fotg210_qh *qh) +{ + /* If the QH isn't linked then there's nothing we can do + * unless we were called during a giveback, in which case + * qh_completions() has to deal with it. + */ + if (qh->qh_state != QH_STATE_LINKED) { + if (qh->qh_state == QH_STATE_COMPLETING) + qh->needs_rescan = 1; + return; + } + + qh_unlink_periodic(fotg210, qh); + + /* Make sure the unlinks are visible before starting the timer */ + wmb(); + + /* + * The EHCI spec doesn't say how long it takes the controller to + * stop accessing an unlinked interrupt QH. The timer delay is + * 9 uframes; presumably that will be long enough. + */ + qh->unlink_cycle = fotg210->intr_unlink_cycle; + + /* New entries go at the end of the intr_unlink list */ + if (fotg210->intr_unlink) + fotg210->intr_unlink_last->unlink_next = qh; + else + fotg210->intr_unlink = qh; + fotg210->intr_unlink_last = qh; + + if (fotg210->intr_unlinking) + ; /* Avoid recursive calls */ + else if (fotg210->rh_state < FOTG210_RH_RUNNING) + fotg210_handle_intr_unlinks(fotg210); + else if (fotg210->intr_unlink == qh) { + fotg210_enable_event(fotg210, FOTG210_HRTIMER_UNLINK_INTR, + true); + ++fotg210->intr_unlink_cycle; + } +} + +static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh) +{ + struct fotg210_qh_hw *hw = qh->hw; + int rc; + + qh->qh_state = QH_STATE_IDLE; + hw->hw_next = FOTG210_LIST_END(fotg210); + + qh_completions(fotg210, qh); + + /* reschedule QH iff another request is queued */ + if (!list_empty(&qh->qtd_list) && + fotg210->rh_state == FOTG210_RH_RUNNING) { + rc = qh_schedule(fotg210, qh); + + /* An error here likely indicates handshake failure + * or no space left in the schedule. Neither fault + * should happen often ... + * + * FIXME kill the now-dysfunctional queued urbs + */ + if (rc != 0) + fotg210_err(fotg210, "can't reschedule qh %p, err %d\n", + qh, rc); + } + + /* maybe turn off periodic schedule */ + --fotg210->intr_count; + disable_periodic(fotg210); +} + +/*-------------------------------------------------------------------------*/ + +static int check_period( + struct fotg210_hcd *fotg210, + unsigned frame, + unsigned uframe, + unsigned period, + unsigned usecs +) { + int claimed; + + /* complete split running into next frame? + * given FSTN support, we could sometimes check... + */ + if (uframe >= 8) + return 0; + + /* convert "usecs we need" to "max already claimed" */ + usecs = fotg210->uframe_periodic_max - usecs; + + /* we "know" 2 and 4 uframe intervals were rejected; so + * for period 0, check _every_ microframe in the schedule. + */ + if (unlikely(period == 0)) { + do { + for (uframe = 0; uframe < 7; uframe++) { + claimed = periodic_usecs(fotg210, frame, + uframe); + if (claimed > usecs) + return 0; + } + } while ((frame += 1) < fotg210->periodic_size); + + /* just check the specified uframe, at that period */ + } else { + do { + claimed = periodic_usecs(fotg210, frame, uframe); + if (claimed > usecs) + return 0; + } while ((frame += period) < fotg210->periodic_size); + } + + /* success! */ + return 1; +} + +static int check_intr_schedule( + struct fotg210_hcd *fotg210, + unsigned frame, + unsigned uframe, + const struct fotg210_qh *qh, + __hc32 *c_maskp +) +{ + int retval = -ENOSPC; + u8 mask = 0; + + if (qh->c_usecs && uframe >= 6) /* FSTN territory? */ + goto done; + + if (!check_period(fotg210, frame, uframe, qh->period, qh->usecs)) + goto done; + if (!qh->c_usecs) { + retval = 0; + *c_maskp = 0; + goto done; + } + + /* Make sure this tt's buffer is also available for CSPLITs. + * We pessimize a bit; probably the typical full speed case + * doesn't need the second CSPLIT. + * + * NOTE: both SPLIT and CSPLIT could be checked in just + * one smart pass... + */ + mask = 0x03 << (uframe + qh->gap_uf); + *c_maskp = cpu_to_hc32(fotg210, mask << 8); + + mask |= 1 << uframe; + if (tt_no_collision(fotg210, qh->period, qh->dev, frame, mask)) { + if (!check_period(fotg210, frame, uframe + qh->gap_uf + 1, + qh->period, qh->c_usecs)) + goto done; + if (!check_period(fotg210, frame, uframe + qh->gap_uf, + qh->period, qh->c_usecs)) + goto done; + retval = 0; + } +done: + return retval; +} + +/* "first fit" scheduling policy used the first time through, + * or when the previous schedule slot can't be re-used. + */ +static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh) +{ + int status; + unsigned uframe; + __hc32 c_mask; + unsigned frame; /* 0..(qh->period - 1), or NO_FRAME */ + struct fotg210_qh_hw *hw = qh->hw; + + qh_refresh(fotg210, qh); + hw->hw_next = FOTG210_LIST_END(fotg210); + frame = qh->start; + + /* reuse the previous schedule slots, if we can */ + if (frame < qh->period) { + uframe = ffs(hc32_to_cpup(fotg210, &hw->hw_info2) & QH_SMASK); + status = check_intr_schedule(fotg210, frame, --uframe, + qh, &c_mask); + } else { + uframe = 0; + c_mask = 0; + status = -ENOSPC; + } + + /* else scan the schedule to find a group of slots such that all + * uframes have enough periodic bandwidth available. + */ + if (status) { + /* "normal" case, uframing flexible except with splits */ + if (qh->period) { + int i; + + for (i = qh->period; status && i > 0; --i) { + frame = ++fotg210->random_frame % qh->period; + for (uframe = 0; uframe < 8; uframe++) { + status = check_intr_schedule(fotg210, + frame, uframe, qh, + &c_mask); + if (status == 0) + break; + } + } + + /* qh->period == 0 means every uframe */ + } else { + frame = 0; + status = check_intr_schedule(fotg210, 0, 0, qh, + &c_mask); + } + if (status) + goto done; + qh->start = frame; + + /* reset S-frame and (maybe) C-frame masks */ + hw->hw_info2 &= cpu_to_hc32(fotg210, ~(QH_CMASK | QH_SMASK)); + hw->hw_info2 |= qh->period + ? cpu_to_hc32(fotg210, 1 << uframe) + : cpu_to_hc32(fotg210, QH_SMASK); + hw->hw_info2 |= c_mask; + } else + fotg210_dbg(fotg210, "reused qh %p schedule\n", qh); + + /* stuff into the periodic schedule */ + qh_link_periodic(fotg210, qh); +done: + return status; +} + +static int intr_submit( + struct fotg210_hcd *fotg210, + struct urb *urb, + struct list_head *qtd_list, + gfp_t mem_flags +) { + unsigned epnum; + unsigned long flags; + struct fotg210_qh *qh; + int status; + struct list_head empty; + + /* get endpoint and transfer/schedule data */ + epnum = urb->ep->desc.bEndpointAddress; + + spin_lock_irqsave(&fotg210->lock, flags); + + if (unlikely(!HCD_HW_ACCESSIBLE(fotg210_to_hcd(fotg210)))) { + status = -ESHUTDOWN; + goto done_not_linked; + } + status = usb_hcd_link_urb_to_ep(fotg210_to_hcd(fotg210), urb); + if (unlikely(status)) + goto done_not_linked; + + /* get qh and force any scheduling errors */ + INIT_LIST_HEAD(&empty); + qh = qh_append_tds(fotg210, urb, &empty, epnum, &urb->ep->hcpriv); + if (qh == NULL) { + status = -ENOMEM; + goto done; + } + if (qh->qh_state == QH_STATE_IDLE) { + status = qh_schedule(fotg210, qh); + if (status) + goto done; + } + + /* then queue the urb's tds to the qh */ + qh = qh_append_tds(fotg210, urb, qtd_list, epnum, &urb->ep->hcpriv); + BUG_ON(qh == NULL); + + /* ... update usbfs periodic stats */ + fotg210_to_hcd(fotg210)->self.bandwidth_int_reqs++; + +done: + if (unlikely(status)) + usb_hcd_unlink_urb_from_ep(fotg210_to_hcd(fotg210), urb); +done_not_linked: + spin_unlock_irqrestore(&fotg210->lock, flags); + if (status) + qtd_list_free(fotg210, urb, qtd_list); + + return status; +} + +static void scan_intr(struct fotg210_hcd *fotg210) +{ + struct fotg210_qh *qh; + + list_for_each_entry_safe(qh, fotg210->qh_scan_next, + &fotg210->intr_qh_list, intr_node) { + rescan: + /* clean any finished work for this qh */ + if (!list_empty(&qh->qtd_list)) { + int temp; + + /* + * Unlinks could happen here; completion reporting + * drops the lock. That's why fotg210->qh_scan_next + * always holds the next qh to scan; if the next qh + * gets unlinked then fotg210->qh_scan_next is adjusted + * in qh_unlink_periodic(). + */ + temp = qh_completions(fotg210, qh); + if (unlikely(qh->needs_rescan || + (list_empty(&qh->qtd_list) && + qh->qh_state == QH_STATE_LINKED))) + start_unlink_intr(fotg210, qh); + else if (temp != 0) + goto rescan; + } + } +} + +/*-------------------------------------------------------------------------*/ + +/* fotg210_iso_stream ops work with both ITD and SITD */ + +static struct fotg210_iso_stream * +iso_stream_alloc(gfp_t mem_flags) +{ + struct fotg210_iso_stream *stream; + + stream = kzalloc(sizeof(*stream), mem_flags); + if (likely(stream != NULL)) { + INIT_LIST_HEAD(&stream->td_list); + INIT_LIST_HEAD(&stream->free_list); + stream->next_uframe = -1; + } + return stream; +} + +static void +iso_stream_init( + struct fotg210_hcd *fotg210, + struct fotg210_iso_stream *stream, + struct usb_device *dev, + int pipe, + unsigned interval +) +{ + u32 buf1; + unsigned epnum, maxp; + int is_input; + long bandwidth; + unsigned multi; + + /* + * this might be a "high bandwidth" highspeed endpoint, + * as encoded in the ep descriptor's wMaxPacket field + */ + epnum = usb_pipeendpoint(pipe); + is_input = usb_pipein(pipe) ? USB_DIR_IN : 0; + maxp = usb_maxpacket(dev, pipe, !is_input); + if (is_input) + buf1 = (1 << 11); + else + buf1 = 0; + + maxp = max_packet(maxp); + multi = hb_mult(maxp); + buf1 |= maxp; + maxp *= multi; + + stream->buf0 = cpu_to_hc32(fotg210, (epnum << 8) | dev->devnum); + stream->buf1 = cpu_to_hc32(fotg210, buf1); + stream->buf2 = cpu_to_hc32(fotg210, multi); + + /* usbfs wants to report the average usecs per frame tied up + * when transfers on this endpoint are scheduled ... + */ + if (dev->speed == USB_SPEED_FULL) { + interval <<= 3; + stream->usecs = NS_TO_US(usb_calc_bus_time(dev->speed, + is_input, 1, maxp)); + stream->usecs /= 8; + } else { + stream->highspeed = 1; + stream->usecs = HS_USECS_ISO(maxp); + } + bandwidth = stream->usecs * 8; + bandwidth /= interval; + + stream->bandwidth = bandwidth; + stream->udev = dev; + stream->bEndpointAddress = is_input | epnum; + stream->interval = interval; + stream->maxp = maxp; +} + +static struct fotg210_iso_stream * +iso_stream_find(struct fotg210_hcd *fotg210, struct urb *urb) +{ + unsigned epnum; + struct fotg210_iso_stream *stream; + struct usb_host_endpoint *ep; + unsigned long flags; + + epnum = usb_pipeendpoint(urb->pipe); + if (usb_pipein(urb->pipe)) + ep = urb->dev->ep_in[epnum]; + else + ep = urb->dev->ep_out[epnum]; + + spin_lock_irqsave(&fotg210->lock, flags); + stream = ep->hcpriv; + + if (unlikely(stream == NULL)) { + stream = iso_stream_alloc(GFP_ATOMIC); + if (likely(stream != NULL)) { + ep->hcpriv = stream; + stream->ep = ep; + iso_stream_init(fotg210, stream, urb->dev, urb->pipe, + urb->interval); + } + + /* if dev->ep[epnum] is a QH, hw is set */ + } else if (unlikely(stream->hw != NULL)) { + fotg210_dbg(fotg210, "dev %s ep%d%s, not iso??\n", + urb->dev->devpath, epnum, + usb_pipein(urb->pipe) ? "in" : "out"); + stream = NULL; + } + + spin_unlock_irqrestore(&fotg210->lock, flags); + return stream; +} + +/*-------------------------------------------------------------------------*/ + +/* fotg210_iso_sched ops can be ITD-only or SITD-only */ + +static struct fotg210_iso_sched * +iso_sched_alloc(unsigned packets, gfp_t mem_flags) +{ + struct fotg210_iso_sched *iso_sched; + int size = sizeof(*iso_sched); + + size += packets * sizeof(struct fotg210_iso_packet); + iso_sched = kzalloc(size, mem_flags); + if (likely(iso_sched != NULL)) + INIT_LIST_HEAD(&iso_sched->td_list); + + return iso_sched; +} + +static inline void +itd_sched_init( + struct fotg210_hcd *fotg210, + struct fotg210_iso_sched *iso_sched, + struct fotg210_iso_stream *stream, + struct urb *urb +) +{ + unsigned i; + dma_addr_t dma = urb->transfer_dma; + + /* how many uframes are needed for these transfers */ + iso_sched->span = urb->number_of_packets * stream->interval; + + /* figure out per-uframe itd fields that we'll need later + * when we fit new itds into the schedule. + */ + for (i = 0; i < urb->number_of_packets; i++) { + struct fotg210_iso_packet *uframe = &iso_sched->packet[i]; + unsigned length; + dma_addr_t buf; + u32 trans; + + length = urb->iso_frame_desc[i].length; + buf = dma + urb->iso_frame_desc[i].offset; + + trans = FOTG210_ISOC_ACTIVE; + trans |= buf & 0x0fff; + if (unlikely(((i + 1) == urb->number_of_packets)) + && !(urb->transfer_flags & URB_NO_INTERRUPT)) + trans |= FOTG210_ITD_IOC; + trans |= length << 16; + uframe->transaction = cpu_to_hc32(fotg210, trans); + + /* might need to cross a buffer page within a uframe */ + uframe->bufp = (buf & ~(u64)0x0fff); + buf += length; + if (unlikely((uframe->bufp != (buf & ~(u64)0x0fff)))) + uframe->cross = 1; + } +} + +static void +iso_sched_free( + struct fotg210_iso_stream *stream, + struct fotg210_iso_sched *iso_sched +) +{ + if (!iso_sched) + return; + /* caller must hold fotg210->lock!*/ + list_splice(&iso_sched->td_list, &stream->free_list); + kfree(iso_sched); +} + +static int +itd_urb_transaction( + struct fotg210_iso_stream *stream, + struct fotg210_hcd *fotg210, + struct urb *urb, + gfp_t mem_flags +) +{ + struct fotg210_itd *itd; + dma_addr_t itd_dma; + int i; + unsigned num_itds; + struct fotg210_iso_sched *sched; + unsigned long flags; + + sched = iso_sched_alloc(urb->number_of_packets, mem_flags); + if (unlikely(sched == NULL)) + return -ENOMEM; + + itd_sched_init(fotg210, sched, stream, urb); + + if (urb->interval < 8) + num_itds = 1 + (sched->span + 7) / 8; + else + num_itds = urb->number_of_packets; + + /* allocate/init ITDs */ + spin_lock_irqsave(&fotg210->lock, flags); + for (i = 0; i < num_itds; i++) { + + /* + * Use iTDs from the free list, but not iTDs that may + * still be in use by the hardware. + */ + if (likely(!list_empty(&stream->free_list))) { + itd = list_first_entry(&stream->free_list, + struct fotg210_itd, itd_list); + if (itd->frame == fotg210->now_frame) + goto alloc_itd; + list_del(&itd->itd_list); + itd_dma = itd->itd_dma; + } else { + alloc_itd: + spin_unlock_irqrestore(&fotg210->lock, flags); + itd = dma_pool_alloc(fotg210->itd_pool, mem_flags, + &itd_dma); + spin_lock_irqsave(&fotg210->lock, flags); + if (!itd) { + iso_sched_free(stream, sched); + spin_unlock_irqrestore(&fotg210->lock, flags); + return -ENOMEM; + } + } + + memset(itd, 0, sizeof(*itd)); + itd->itd_dma = itd_dma; + list_add(&itd->itd_list, &sched->td_list); + } + spin_unlock_irqrestore(&fotg210->lock, flags); + + /* temporarily store schedule info in hcpriv */ + urb->hcpriv = sched; + urb->error_count = 0; + return 0; +} + +/*-------------------------------------------------------------------------*/ + +static inline int +itd_slot_ok( + struct fotg210_hcd *fotg210, + u32 mod, + u32 uframe, + u8 usecs, + u32 period +) +{ + uframe %= period; + do { + /* can't commit more than uframe_periodic_max usec */ + if (periodic_usecs(fotg210, uframe >> 3, uframe & 0x7) + > (fotg210->uframe_periodic_max - usecs)) + return 0; + + /* we know urb->interval is 2^N uframes */ + uframe += period; + } while (uframe < mod); + return 1; +} + +/* + * This scheduler plans almost as far into the future as it has actual + * periodic schedule slots. (Affected by TUNE_FLS, which defaults to + * "as small as possible" to be cache-friendlier.) That limits the size + * transfers you can stream reliably; avoid more than 64 msec per urb. + * Also avoid queue depths of less than fotg210's worst irq latency (affected + * by the per-urb URB_NO_INTERRUPT hint, the log2_irq_thresh module parameter, + * and other factors); or more than about 230 msec total (for portability, + * given FOTG210_TUNE_FLS and the slop). Or, write a smarter scheduler! + */ + +#define SCHEDULE_SLOP 80 /* microframes */ + +static int +iso_stream_schedule( + struct fotg210_hcd *fotg210, + struct urb *urb, + struct fotg210_iso_stream *stream +) +{ + u32 now, next, start, period, span; + int status; + unsigned mod = fotg210->periodic_size << 3; + struct fotg210_iso_sched *sched = urb->hcpriv; + + period = urb->interval; + span = sched->span; + + if (span > mod - SCHEDULE_SLOP) { + fotg210_dbg(fotg210, "iso request %p too long\n", urb); + status = -EFBIG; + goto fail; + } + + now = fotg210_read_frame_index(fotg210) & (mod - 1); + + /* Typical case: reuse current schedule, stream is still active. + * Hopefully there are no gaps from the host falling behind + * (irq delays etc), but if there are we'll take the next + * slot in the schedule, implicitly assuming URB_ISO_ASAP. + */ + if (likely(!list_empty(&stream->td_list))) { + u32 excess; + + /* For high speed devices, allow scheduling within the + * isochronous scheduling threshold. For full speed devices + * and Intel PCI-based controllers, don't (work around for + * Intel ICH9 bug). + */ + if (!stream->highspeed && fotg210->fs_i_thresh) + next = now + fotg210->i_thresh; + else + next = now; + + /* Fell behind (by up to twice the slop amount)? + * We decide based on the time of the last currently-scheduled + * slot, not the time of the next available slot. + */ + excess = (stream->next_uframe - period - next) & (mod - 1); + if (excess >= mod - 2 * SCHEDULE_SLOP) + start = next + excess - mod + period * + DIV_ROUND_UP(mod - excess, period); + else + start = next + excess + period; + if (start - now >= mod) { + fotg210_dbg(fotg210, "request %p would overflow (%d+%d >= %d)\n", + urb, start - now - period, period, + mod); + status = -EFBIG; + goto fail; + } + } + + /* need to schedule; when's the next (u)frame we could start? + * this is bigger than fotg210->i_thresh allows; scheduling itself + * isn't free, the slop should handle reasonably slow cpus. it + * can also help high bandwidth if the dma and irq loads don't + * jump until after the queue is primed. + */ + else { + int done = 0; + start = SCHEDULE_SLOP + (now & ~0x07); + + /* NOTE: assumes URB_ISO_ASAP, to limit complexity/bugs */ + + /* find a uframe slot with enough bandwidth. + * Early uframes are more precious because full-speed + * iso IN transfers can't use late uframes, + * and therefore they should be allocated last. + */ + next = start; + start += period; + do { + start--; + /* check schedule: enough space? */ + if (itd_slot_ok(fotg210, mod, start, + stream->usecs, period)) + done = 1; + } while (start > next && !done); + + /* no room in the schedule */ + if (!done) { + fotg210_dbg(fotg210, "iso resched full %p (now %d max %d)\n", + urb, now, now + mod); + status = -ENOSPC; + goto fail; + } + } + + /* Tried to schedule too far into the future? */ + if (unlikely(start - now + span - period + >= mod - 2 * SCHEDULE_SLOP)) { + fotg210_dbg(fotg210, "request %p would overflow (%d+%d >= %d)\n", + urb, start - now, span - period, + mod - 2 * SCHEDULE_SLOP); + status = -EFBIG; + goto fail; + } + + stream->next_uframe = start & (mod - 1); + + /* report high speed start in uframes; full speed, in frames */ + urb->start_frame = stream->next_uframe; + if (!stream->highspeed) + urb->start_frame >>= 3; + + /* Make sure scan_isoc() sees these */ + if (fotg210->isoc_count == 0) + fotg210->next_frame = now >> 3; + return 0; + + fail: + iso_sched_free(stream, sched); + urb->hcpriv = NULL; + return status; +} + +/*-------------------------------------------------------------------------*/ + +static inline void +itd_init(struct fotg210_hcd *fotg210, struct fotg210_iso_stream *stream, + struct fotg210_itd *itd) +{ + int i; + + /* it's been recently zeroed */ + itd->hw_next = FOTG210_LIST_END(fotg210); + itd->hw_bufp[0] = stream->buf0; + itd->hw_bufp[1] = stream->buf1; + itd->hw_bufp[2] = stream->buf2; + + for (i = 0; i < 8; i++) + itd->index[i] = -1; + + /* All other fields are filled when scheduling */ +} + +static inline void +itd_patch( + struct fotg210_hcd *fotg210, + struct fotg210_itd *itd, + struct fotg210_iso_sched *iso_sched, + unsigned index, + u16 uframe +) +{ + struct fotg210_iso_packet *uf = &iso_sched->packet[index]; + unsigned pg = itd->pg; + + uframe &= 0x07; + itd->index[uframe] = index; + + itd->hw_transaction[uframe] = uf->transaction; + itd->hw_transaction[uframe] |= cpu_to_hc32(fotg210, pg << 12); + itd->hw_bufp[pg] |= cpu_to_hc32(fotg210, uf->bufp & ~(u32)0); + itd->hw_bufp_hi[pg] |= cpu_to_hc32(fotg210, (u32)(uf->bufp >> 32)); + + /* iso_frame_desc[].offset must be strictly increasing */ + if (unlikely(uf->cross)) { + u64 bufp = uf->bufp + 4096; + + itd->pg = ++pg; + itd->hw_bufp[pg] |= cpu_to_hc32(fotg210, bufp & ~(u32)0); + itd->hw_bufp_hi[pg] |= cpu_to_hc32(fotg210, (u32)(bufp >> 32)); + } +} + +static inline void +itd_link(struct fotg210_hcd *fotg210, unsigned frame, struct fotg210_itd *itd) +{ + union fotg210_shadow *prev = &fotg210->pshadow[frame]; + __hc32 *hw_p = &fotg210->periodic[frame]; + union fotg210_shadow here = *prev; + __hc32 type = 0; + + /* skip any iso nodes which might belong to previous microframes */ + while (here.ptr) { + type = Q_NEXT_TYPE(fotg210, *hw_p); + if (type == cpu_to_hc32(fotg210, Q_TYPE_QH)) + break; + prev = periodic_next_shadow(fotg210, prev, type); + hw_p = shadow_next_periodic(fotg210, &here, type); + here = *prev; + } + + itd->itd_next = here; + itd->hw_next = *hw_p; + prev->itd = itd; + itd->frame = frame; + wmb(); + *hw_p = cpu_to_hc32(fotg210, itd->itd_dma | Q_TYPE_ITD); +} + +/* fit urb's itds into the selected schedule slot; activate as needed */ +static void itd_link_urb( + struct fotg210_hcd *fotg210, + struct urb *urb, + unsigned mod, + struct fotg210_iso_stream *stream +) +{ + int packet; + unsigned next_uframe, uframe, frame; + struct fotg210_iso_sched *iso_sched = urb->hcpriv; + struct fotg210_itd *itd; + + next_uframe = stream->next_uframe & (mod - 1); + + if (unlikely(list_empty(&stream->td_list))) { + fotg210_to_hcd(fotg210)->self.bandwidth_allocated + += stream->bandwidth; + fotg210_vdbg(fotg210, + "schedule devp %s ep%d%s-iso period %d start %d.%d\n", + urb->dev->devpath, stream->bEndpointAddress & 0x0f, + (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out", + urb->interval, + next_uframe >> 3, next_uframe & 0x7); + } + + /* fill iTDs uframe by uframe */ + for (packet = 0, itd = NULL; packet < urb->number_of_packets;) { + if (itd == NULL) { + /* ASSERT: we have all necessary itds */ + + /* ASSERT: no itds for this endpoint in this uframe */ + + itd = list_entry(iso_sched->td_list.next, + struct fotg210_itd, itd_list); + list_move_tail(&itd->itd_list, &stream->td_list); + itd->stream = stream; + itd->urb = urb; + itd_init(fotg210, stream, itd); + } + + uframe = next_uframe & 0x07; + frame = next_uframe >> 3; + + itd_patch(fotg210, itd, iso_sched, packet, uframe); + + next_uframe += stream->interval; + next_uframe &= mod - 1; + packet++; + + /* link completed itds into the schedule */ + if (((next_uframe >> 3) != frame) + || packet == urb->number_of_packets) { + itd_link(fotg210, frame & (fotg210->periodic_size - 1), + itd); + itd = NULL; + } + } + stream->next_uframe = next_uframe; + + /* don't need that schedule data any more */ + iso_sched_free(stream, iso_sched); + urb->hcpriv = NULL; + + ++fotg210->isoc_count; + enable_periodic(fotg210); +} + +#define ISO_ERRS (FOTG210_ISOC_BUF_ERR | FOTG210_ISOC_BABBLE |\ + FOTG210_ISOC_XACTERR) + +/* Process and recycle a completed ITD. Return true iff its urb completed, + * and hence its completion callback probably added things to the hardware + * schedule. + * + * Note that we carefully avoid recycling this descriptor until after any + * completion callback runs, so that it won't be reused quickly. That is, + * assuming (a) no more than two urbs per frame on this endpoint, and also + * (b) only this endpoint's completions submit URBs. It seems some silicon + * corrupts things if you reuse completed descriptors very quickly... + */ +static bool itd_complete(struct fotg210_hcd *fotg210, struct fotg210_itd *itd) +{ + struct urb *urb = itd->urb; + struct usb_iso_packet_descriptor *desc; + u32 t; + unsigned uframe; + int urb_index = -1; + struct fotg210_iso_stream *stream = itd->stream; + struct usb_device *dev; + bool retval = false; + + /* for each uframe with a packet */ + for (uframe = 0; uframe < 8; uframe++) { + if (likely(itd->index[uframe] == -1)) + continue; + urb_index = itd->index[uframe]; + desc = &urb->iso_frame_desc[urb_index]; + + t = hc32_to_cpup(fotg210, &itd->hw_transaction[uframe]); + itd->hw_transaction[uframe] = 0; + + /* report transfer status */ + if (unlikely(t & ISO_ERRS)) { + urb->error_count++; + if (t & FOTG210_ISOC_BUF_ERR) + desc->status = usb_pipein(urb->pipe) + ? -ENOSR /* hc couldn't read */ + : -ECOMM; /* hc couldn't write */ + else if (t & FOTG210_ISOC_BABBLE) + desc->status = -EOVERFLOW; + else /* (t & FOTG210_ISOC_XACTERR) */ + desc->status = -EPROTO; + + /* HC need not update length with this error */ + if (!(t & FOTG210_ISOC_BABBLE)) { + desc->actual_length = + fotg210_itdlen(urb, desc, t); + urb->actual_length += desc->actual_length; + } + } else if (likely((t & FOTG210_ISOC_ACTIVE) == 0)) { + desc->status = 0; + desc->actual_length = fotg210_itdlen(urb, desc, t); + urb->actual_length += desc->actual_length; + } else { + /* URB was too late */ + desc->status = -EXDEV; + } + } + + /* handle completion now? */ + if (likely((urb_index + 1) != urb->number_of_packets)) + goto done; + + /* ASSERT: it's really the last itd for this urb + list_for_each_entry (itd, &stream->td_list, itd_list) + BUG_ON (itd->urb == urb); + */ + + /* give urb back to the driver; completion often (re)submits */ + dev = urb->dev; + fotg210_urb_done(fotg210, urb, 0); + retval = true; + urb = NULL; + + --fotg210->isoc_count; + disable_periodic(fotg210); + + if (unlikely(list_is_singular(&stream->td_list))) { + fotg210_to_hcd(fotg210)->self.bandwidth_allocated + -= stream->bandwidth; + fotg210_vdbg(fotg210, + "deschedule devp %s ep%d%s-iso\n", + dev->devpath, stream->bEndpointAddress & 0x0f, + (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out"); + } + +done: + itd->urb = NULL; + + /* Add to the end of the free list for later reuse */ + list_move_tail(&itd->itd_list, &stream->free_list); + + /* Recycle the iTDs when the pipeline is empty (ep no longer in use) */ + if (list_empty(&stream->td_list)) { + list_splice_tail_init(&stream->free_list, + &fotg210->cached_itd_list); + start_free_itds(fotg210); + } + + return retval; +} + +/*-------------------------------------------------------------------------*/ + +static int itd_submit(struct fotg210_hcd *fotg210, struct urb *urb, + gfp_t mem_flags) +{ + int status = -EINVAL; + unsigned long flags; + struct fotg210_iso_stream *stream; + + /* Get iso_stream head */ + stream = iso_stream_find(fotg210, urb); + if (unlikely(stream == NULL)) { + fotg210_dbg(fotg210, "can't get iso stream\n"); + return -ENOMEM; + } + if (unlikely(urb->interval != stream->interval && + fotg210_port_speed(fotg210, 0) == + USB_PORT_STAT_HIGH_SPEED)) { + fotg210_dbg(fotg210, "can't change iso interval %d --> %d\n", + stream->interval, urb->interval); + goto done; + } + +#ifdef FOTG210_URB_TRACE + fotg210_dbg(fotg210, + "%s %s urb %p ep%d%s len %d, %d pkts %d uframes[%p]\n", + __func__, urb->dev->devpath, urb, + usb_pipeendpoint(urb->pipe), + usb_pipein(urb->pipe) ? "in" : "out", + urb->transfer_buffer_length, + urb->number_of_packets, urb->interval, + stream); +#endif + + /* allocate ITDs w/o locking anything */ + status = itd_urb_transaction(stream, fotg210, urb, mem_flags); + if (unlikely(status < 0)) { + fotg210_dbg(fotg210, "can't init itds\n"); + goto done; + } + + /* schedule ... need to lock */ + spin_lock_irqsave(&fotg210->lock, flags); + if (unlikely(!HCD_HW_ACCESSIBLE(fotg210_to_hcd(fotg210)))) { + status = -ESHUTDOWN; + goto done_not_linked; + } + status = usb_hcd_link_urb_to_ep(fotg210_to_hcd(fotg210), urb); + if (unlikely(status)) + goto done_not_linked; + status = iso_stream_schedule(fotg210, urb, stream); + if (likely(status == 0)) + itd_link_urb(fotg210, urb, fotg210->periodic_size << 3, stream); + else + usb_hcd_unlink_urb_from_ep(fotg210_to_hcd(fotg210), urb); + done_not_linked: + spin_unlock_irqrestore(&fotg210->lock, flags); + done: + return status; +} + +/*-------------------------------------------------------------------------*/ + +static void scan_isoc(struct fotg210_hcd *fotg210) +{ + unsigned uf, now_frame, frame; + unsigned fmask = fotg210->periodic_size - 1; + bool modified, live; + + /* + * When running, scan from last scan point up to "now" + * else clean up by scanning everything that's left. + * Touches as few pages as possible: cache-friendly. + */ + if (fotg210->rh_state >= FOTG210_RH_RUNNING) { + uf = fotg210_read_frame_index(fotg210); + now_frame = (uf >> 3) & fmask; + live = true; + } else { + now_frame = (fotg210->next_frame - 1) & fmask; + live = false; + } + fotg210->now_frame = now_frame; + + frame = fotg210->next_frame; + for (;;) { + union fotg210_shadow q, *q_p; + __hc32 type, *hw_p; + +restart: + /* scan each element in frame's queue for completions */ + q_p = &fotg210->pshadow[frame]; + hw_p = &fotg210->periodic[frame]; + q.ptr = q_p->ptr; + type = Q_NEXT_TYPE(fotg210, *hw_p); + modified = false; + + while (q.ptr != NULL) { + switch (hc32_to_cpu(fotg210, type)) { + case Q_TYPE_ITD: + /* If this ITD is still active, leave it for + * later processing ... check the next entry. + * No need to check for activity unless the + * frame is current. + */ + if (frame == now_frame && live) { + rmb(); + for (uf = 0; uf < 8; uf++) { + if (q.itd->hw_transaction[uf] & + ITD_ACTIVE(fotg210)) + break; + } + if (uf < 8) { + q_p = &q.itd->itd_next; + hw_p = &q.itd->hw_next; + type = Q_NEXT_TYPE(fotg210, + q.itd->hw_next); + q = *q_p; + break; + } + } + + /* Take finished ITDs out of the schedule + * and process them: recycle, maybe report + * URB completion. HC won't cache the + * pointer for much longer, if at all. + */ + *q_p = q.itd->itd_next; + *hw_p = q.itd->hw_next; + type = Q_NEXT_TYPE(fotg210, q.itd->hw_next); + wmb(); + modified = itd_complete(fotg210, q.itd); + q = *q_p; + break; + default: + fotg210_dbg(fotg210, "corrupt type %d frame %d shadow %p\n", + type, frame, q.ptr); + /* FALL THROUGH */ + case Q_TYPE_QH: + case Q_TYPE_FSTN: + /* End of the iTDs and siTDs */ + q.ptr = NULL; + break; + } + + /* assume completion callbacks modify the queue */ + if (unlikely(modified && fotg210->isoc_count > 0)) + goto restart; + } + + /* Stop when we have reached the current frame */ + if (frame == now_frame) + break; + frame = (frame + 1) & fmask; + } + fotg210->next_frame = now_frame; +} +/*-------------------------------------------------------------------------*/ +/* + * Display / Set uframe_periodic_max + */ +static ssize_t show_uframe_periodic_max(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct fotg210_hcd *fotg210; + int n; + + fotg210 = hcd_to_fotg210(bus_to_hcd(dev_get_drvdata(dev))); + n = scnprintf(buf, PAGE_SIZE, "%d\n", fotg210->uframe_periodic_max); + return n; +} + + +static ssize_t store_uframe_periodic_max(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fotg210_hcd *fotg210; + unsigned uframe_periodic_max; + unsigned frame, uframe; + unsigned short allocated_max; + unsigned long flags; + ssize_t ret; + + fotg210 = hcd_to_fotg210(bus_to_hcd(dev_get_drvdata(dev))); + if (kstrtouint(buf, 0, &uframe_periodic_max) < 0) + return -EINVAL; + + if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) { + fotg210_info(fotg210, "rejecting invalid request for uframe_periodic_max=%u\n", + uframe_periodic_max); + return -EINVAL; + } + + ret = -EINVAL; + + /* + * lock, so that our checking does not race with possible periodic + * bandwidth allocation through submitting new urbs. + */ + spin_lock_irqsave(&fotg210->lock, flags); + + /* + * for request to decrease max periodic bandwidth, we have to check + * every microframe in the schedule to see whether the decrease is + * possible. + */ + if (uframe_periodic_max < fotg210->uframe_periodic_max) { + allocated_max = 0; + + for (frame = 0; frame < fotg210->periodic_size; ++frame) + for (uframe = 0; uframe < 7; ++uframe) + allocated_max = max(allocated_max, + periodic_usecs(fotg210, frame, uframe)); + + if (allocated_max > uframe_periodic_max) { + fotg210_info(fotg210, + "cannot decrease uframe_periodic_max becase " + "periodic bandwidth is already allocated " + "(%u > %u)\n", + allocated_max, uframe_periodic_max); + goto out_unlock; + } + } + + /* increasing is always ok */ + + fotg210_info(fotg210, "setting max periodic bandwidth to %u%% (== %u usec/uframe)\n", + 100 * uframe_periodic_max/125, uframe_periodic_max); + + if (uframe_periodic_max != 100) + fotg210_warn(fotg210, "max periodic bandwidth set is non-standard\n"); + + fotg210->uframe_periodic_max = uframe_periodic_max; + ret = count; + +out_unlock: + spin_unlock_irqrestore(&fotg210->lock, flags); + return ret; +} + +static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max, + store_uframe_periodic_max); + +static inline int create_sysfs_files(struct fotg210_hcd *fotg210) +{ + struct device *controller = fotg210_to_hcd(fotg210)->self.controller; + int i = 0; + + if (i) + goto out; + + i = device_create_file(controller, &dev_attr_uframe_periodic_max); +out: + return i; +} + +static inline void remove_sysfs_files(struct fotg210_hcd *fotg210) +{ + struct device *controller = fotg210_to_hcd(fotg210)->self.controller; + + device_remove_file(controller, &dev_attr_uframe_periodic_max); +} +/*-------------------------------------------------------------------------*/ + +/* On some systems, leaving remote wakeup enabled prevents system shutdown. + * The firmware seems to think that powering off is a wakeup event! + * This routine turns off remote wakeup and everything else, on all ports. + */ +static void fotg210_turn_off_all_ports(struct fotg210_hcd *fotg210) +{ + u32 __iomem *status_reg = &fotg210->regs->port_status; + + fotg210_writel(fotg210, PORT_RWC_BITS, status_reg); +} + +/* + * Halt HC, turn off all ports, and let the BIOS use the companion controllers. + * Must be called with interrupts enabled and the lock not held. + */ +static void fotg210_silence_controller(struct fotg210_hcd *fotg210) +{ + fotg210_halt(fotg210); + + spin_lock_irq(&fotg210->lock); + fotg210->rh_state = FOTG210_RH_HALTED; + fotg210_turn_off_all_ports(fotg210); + spin_unlock_irq(&fotg210->lock); +} + +/* fotg210_shutdown kick in for silicon on any bus (not just pci, etc). + * This forcibly disables dma and IRQs, helping kexec and other cases + * where the next system software may expect clean state. + */ +static void fotg210_shutdown(struct usb_hcd *hcd) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + + spin_lock_irq(&fotg210->lock); + fotg210->shutdown = true; + fotg210->rh_state = FOTG210_RH_STOPPING; + fotg210->enabled_hrtimer_events = 0; + spin_unlock_irq(&fotg210->lock); + + fotg210_silence_controller(fotg210); + + hrtimer_cancel(&fotg210->hrtimer); +} + +/*-------------------------------------------------------------------------*/ + +/* + * fotg210_work is called from some interrupts, timers, and so on. + * it calls driver completion functions, after dropping fotg210->lock. + */ +static void fotg210_work(struct fotg210_hcd *fotg210) +{ + /* another CPU may drop fotg210->lock during a schedule scan while + * it reports urb completions. this flag guards against bogus + * attempts at re-entrant schedule scanning. + */ + if (fotg210->scanning) { + fotg210->need_rescan = true; + return; + } + fotg210->scanning = true; + + rescan: + fotg210->need_rescan = false; + if (fotg210->async_count) + scan_async(fotg210); + if (fotg210->intr_count > 0) + scan_intr(fotg210); + if (fotg210->isoc_count > 0) + scan_isoc(fotg210); + if (fotg210->need_rescan) + goto rescan; + fotg210->scanning = false; + + /* the IO watchdog guards against hardware or driver bugs that + * misplace IRQs, and should let us run completely without IRQs. + * such lossage has been observed on both VT6202 and VT8235. + */ + turn_on_io_watchdog(fotg210); +} + +/* + * Called when the fotg210_hcd module is removed. + */ +static void fotg210_stop(struct usb_hcd *hcd) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + + fotg210_dbg(fotg210, "stop\n"); + + /* no more interrupts ... */ + + spin_lock_irq(&fotg210->lock); + fotg210->enabled_hrtimer_events = 0; + spin_unlock_irq(&fotg210->lock); + + fotg210_quiesce(fotg210); + fotg210_silence_controller(fotg210); + fotg210_reset(fotg210); + + hrtimer_cancel(&fotg210->hrtimer); + remove_sysfs_files(fotg210); + remove_debug_files(fotg210); + + /* root hub is shut down separately (first, when possible) */ + spin_lock_irq(&fotg210->lock); + end_free_itds(fotg210); + spin_unlock_irq(&fotg210->lock); + fotg210_mem_cleanup(fotg210); + +#ifdef FOTG210_STATS + fotg210_dbg(fotg210, "irq normal %ld err %ld iaa %ld (lost %ld)\n", + fotg210->stats.normal, fotg210->stats.error, fotg210->stats.iaa, + fotg210->stats.lost_iaa); + fotg210_dbg(fotg210, "complete %ld unlink %ld\n", + fotg210->stats.complete, fotg210->stats.unlink); +#endif + + dbg_status(fotg210, "fotg210_stop completed", + fotg210_readl(fotg210, &fotg210->regs->status)); +} + +/* one-time init, only for memory state */ +static int hcd_fotg210_init(struct usb_hcd *hcd) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + u32 temp; + int retval; + u32 hcc_params; + struct fotg210_qh_hw *hw; + + spin_lock_init(&fotg210->lock); + + /* + * keep io watchdog by default, those good HCDs could turn off it later + */ + fotg210->need_io_watchdog = 1; + + hrtimer_init(&fotg210->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + fotg210->hrtimer.function = fotg210_hrtimer_func; + fotg210->next_hrtimer_event = FOTG210_HRTIMER_NO_EVENT; + + hcc_params = fotg210_readl(fotg210, &fotg210->caps->hcc_params); + + /* + * by default set standard 80% (== 100 usec/uframe) max periodic + * bandwidth as required by USB 2.0 + */ + fotg210->uframe_periodic_max = 100; + + /* + * hw default: 1K periodic list heads, one per frame. + * periodic_size can shrink by USBCMD update if hcc_params allows. + */ + fotg210->periodic_size = DEFAULT_I_TDPS; + INIT_LIST_HEAD(&fotg210->intr_qh_list); + INIT_LIST_HEAD(&fotg210->cached_itd_list); + + if (HCC_PGM_FRAMELISTLEN(hcc_params)) { + /* periodic schedule size can be smaller than default */ + switch (FOTG210_TUNE_FLS) { + case 0: + fotg210->periodic_size = 1024; + break; + case 1: + fotg210->periodic_size = 512; + break; + case 2: + fotg210->periodic_size = 256; + break; + default: + BUG(); + } + } + retval = fotg210_mem_init(fotg210, GFP_KERNEL); + if (retval < 0) + return retval; + + /* controllers may cache some of the periodic schedule ... */ + fotg210->i_thresh = 2; + + /* + * dedicate a qh for the async ring head, since we couldn't unlink + * a 'real' qh without stopping the async schedule [4.8]. use it + * as the 'reclamation list head' too. + * its dummy is used in hw_alt_next of many tds, to prevent the qh + * from automatically advancing to the next td after short reads. + */ + fotg210->async->qh_next.qh = NULL; + hw = fotg210->async->hw; + hw->hw_next = QH_NEXT(fotg210, fotg210->async->qh_dma); + hw->hw_info1 = cpu_to_hc32(fotg210, QH_HEAD); + hw->hw_token = cpu_to_hc32(fotg210, QTD_STS_HALT); + hw->hw_qtd_next = FOTG210_LIST_END(fotg210); + fotg210->async->qh_state = QH_STATE_LINKED; + hw->hw_alt_next = QTD_NEXT(fotg210, fotg210->async->dummy->qtd_dma); + + /* clear interrupt enables, set irq latency */ + if (log2_irq_thresh < 0 || log2_irq_thresh > 6) + log2_irq_thresh = 0; + temp = 1 << (16 + log2_irq_thresh); + if (HCC_CANPARK(hcc_params)) { + /* HW default park == 3, on hardware that supports it (like + * NVidia and ALI silicon), maximizes throughput on the async + * schedule by avoiding QH fetches between transfers. + * + * With fast usb storage devices and NForce2, "park" seems to + * make problems: throughput reduction (!), data errors... + */ + if (park) { + park = min_t(unsigned, park, 3); + temp |= CMD_PARK; + temp |= park << 8; + } + fotg210_dbg(fotg210, "park %d\n", park); + } + if (HCC_PGM_FRAMELISTLEN(hcc_params)) { + /* periodic schedule size can be smaller than default */ + temp &= ~(3 << 2); + temp |= (FOTG210_TUNE_FLS << 2); + } + fotg210->command = temp; + + /* Accept arbitrarily long scatter-gather lists */ + if (!(hcd->driver->flags & HCD_LOCAL_MEM)) + hcd->self.sg_tablesize = ~0; + return 0; +} + +/* start HC running; it's halted, hcd_fotg210_init() has been run (once) */ +static int fotg210_run(struct usb_hcd *hcd) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + u32 temp; + u32 hcc_params; + + hcd->uses_new_polling = 1; + + /* EHCI spec section 4.1 */ + + fotg210_writel(fotg210, fotg210->periodic_dma, + &fotg210->regs->frame_list); + fotg210_writel(fotg210, (u32)fotg210->async->qh_dma, + &fotg210->regs->async_next); + + /* + * hcc_params controls whether fotg210->regs->segment must (!!!) + * be used; it constrains QH/ITD/SITD and QTD locations. + * pci_pool consistent memory always uses segment zero. + * streaming mappings for I/O buffers, like pci_map_single(), + * can return segments above 4GB, if the device allows. + * + * NOTE: the dma mask is visible through dma_supported(), so + * drivers can pass this info along ... like NETIF_F_HIGHDMA, + * Scsi_Host.highmem_io, and so forth. It's readonly to all + * host side drivers though. + */ + hcc_params = fotg210_readl(fotg210, &fotg210->caps->hcc_params); + + /* + * Philips, Intel, and maybe others need CMD_RUN before the + * root hub will detect new devices (why?); NEC doesn't + */ + fotg210->command &= ~(CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET); + fotg210->command |= CMD_RUN; + fotg210_writel(fotg210, fotg210->command, &fotg210->regs->command); + dbg_cmd(fotg210, "init", fotg210->command); + + /* + * Start, enabling full USB 2.0 functionality ... usb 1.1 devices + * are explicitly handed to companion controller(s), so no TT is + * involved with the root hub. (Except where one is integrated, + * and there's no companion controller unless maybe for USB OTG.) + * + * Turning on the CF flag will transfer ownership of all ports + * from the companions to the EHCI controller. If any of the + * companions are in the middle of a port reset at the time, it + * could cause trouble. Write-locking ehci_cf_port_reset_rwsem + * guarantees that no resets are in progress. After we set CF, + * a short delay lets the hardware catch up; new resets shouldn't + * be started before the port switching actions could complete. + */ + down_write(&ehci_cf_port_reset_rwsem); + fotg210->rh_state = FOTG210_RH_RUNNING; + /* unblock posted writes */ + fotg210_readl(fotg210, &fotg210->regs->command); + msleep(5); + up_write(&ehci_cf_port_reset_rwsem); + fotg210->last_periodic_enable = ktime_get_real(); + + temp = HC_VERSION(fotg210, + fotg210_readl(fotg210, &fotg210->caps->hc_capbase)); + fotg210_info(fotg210, + "USB %x.%x started, EHCI %x.%02x\n", + ((fotg210->sbrn & 0xf0)>>4), (fotg210->sbrn & 0x0f), + temp >> 8, temp & 0xff); + + fotg210_writel(fotg210, INTR_MASK, + &fotg210->regs->intr_enable); /* Turn On Interrupts */ + + /* GRR this is run-once init(), being done every time the HC starts. + * So long as they're part of class devices, we can't do it init() + * since the class device isn't created that early. + */ + create_debug_files(fotg210); + create_sysfs_files(fotg210); + + return 0; +} + +static int fotg210_setup(struct usb_hcd *hcd) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + int retval; + + fotg210->regs = (void __iomem *)fotg210->caps + + HC_LENGTH(fotg210, + fotg210_readl(fotg210, &fotg210->caps->hc_capbase)); + dbg_hcs_params(fotg210, "reset"); + dbg_hcc_params(fotg210, "reset"); + + /* cache this readonly data; minimize chip reads */ + fotg210->hcs_params = fotg210_readl(fotg210, + &fotg210->caps->hcs_params); + + fotg210->sbrn = HCD_USB2; + + /* data structure init */ + retval = hcd_fotg210_init(hcd); + if (retval) + return retval; + + retval = fotg210_halt(fotg210); + if (retval) + return retval; + + fotg210_reset(fotg210); + + return 0; +} + +/*-------------------------------------------------------------------------*/ + +static irqreturn_t fotg210_irq(struct usb_hcd *hcd) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + u32 status, masked_status, pcd_status = 0, cmd; + int bh; + + spin_lock(&fotg210->lock); + + status = fotg210_readl(fotg210, &fotg210->regs->status); + + /* e.g. cardbus physical eject */ + if (status == ~(u32) 0) { + fotg210_dbg(fotg210, "device removed\n"); + goto dead; + } + + /* + * We don't use STS_FLR, but some controllers don't like it to + * remain on, so mask it out along with the other status bits. + */ + masked_status = status & (INTR_MASK | STS_FLR); + + /* Shared IRQ? */ + if (!masked_status || + unlikely(fotg210->rh_state == FOTG210_RH_HALTED)) { + spin_unlock(&fotg210->lock); + return IRQ_NONE; + } + + /* clear (just) interrupts */ + fotg210_writel(fotg210, masked_status, &fotg210->regs->status); + cmd = fotg210_readl(fotg210, &fotg210->regs->command); + bh = 0; + +#ifdef VERBOSE_DEBUG + /* unrequested/ignored: Frame List Rollover */ + dbg_status(fotg210, "irq", status); +#endif + + /* INT, ERR, and IAA interrupt rates can be throttled */ + + /* normal [4.15.1.2] or error [4.15.1.1] completion */ + if (likely((status & (STS_INT|STS_ERR)) != 0)) { + if (likely((status & STS_ERR) == 0)) + COUNT(fotg210->stats.normal); + else + COUNT(fotg210->stats.error); + bh = 1; + } + + /* complete the unlinking of some qh [4.15.2.3] */ + if (status & STS_IAA) { + + /* Turn off the IAA watchdog */ + fotg210->enabled_hrtimer_events &= + ~BIT(FOTG210_HRTIMER_IAA_WATCHDOG); + + /* + * Mild optimization: Allow another IAAD to reset the + * hrtimer, if one occurs before the next expiration. + * In theory we could always cancel the hrtimer, but + * tests show that about half the time it will be reset + * for some other event anyway. + */ + if (fotg210->next_hrtimer_event == FOTG210_HRTIMER_IAA_WATCHDOG) + ++fotg210->next_hrtimer_event; + + /* guard against (alleged) silicon errata */ + if (cmd & CMD_IAAD) + fotg210_dbg(fotg210, "IAA with IAAD still set?\n"); + if (fotg210->async_iaa) { + COUNT(fotg210->stats.iaa); + end_unlink_async(fotg210); + } else + fotg210_dbg(fotg210, "IAA with nothing unlinked?\n"); + } + + /* remote wakeup [4.3.1] */ + if (status & STS_PCD) { + int pstatus; + u32 __iomem *status_reg = &fotg210->regs->port_status; + + /* kick root hub later */ + pcd_status = status; + + /* resume root hub? */ + if (fotg210->rh_state == FOTG210_RH_SUSPENDED) + usb_hcd_resume_root_hub(hcd); + + pstatus = fotg210_readl(fotg210, status_reg); + + if (test_bit(0, &fotg210->suspended_ports) && + ((pstatus & PORT_RESUME) || + !(pstatus & PORT_SUSPEND)) && + (pstatus & PORT_PE) && + fotg210->reset_done[0] == 0) { + + /* start 20 msec resume signaling from this port, + * and make khubd collect PORT_STAT_C_SUSPEND to + * stop that signaling. Use 5 ms extra for safety, + * like usb_port_resume() does. + */ + fotg210->reset_done[0] = jiffies + msecs_to_jiffies(25); + set_bit(0, &fotg210->resuming_ports); + fotg210_dbg(fotg210, "port 1 remote wakeup\n"); + mod_timer(&hcd->rh_timer, fotg210->reset_done[0]); + } + } + + /* PCI errors [4.15.2.4] */ + if (unlikely((status & STS_FATAL) != 0)) { + fotg210_err(fotg210, "fatal error\n"); + dbg_cmd(fotg210, "fatal", cmd); + dbg_status(fotg210, "fatal", status); +dead: + usb_hc_died(hcd); + + /* Don't let the controller do anything more */ + fotg210->shutdown = true; + fotg210->rh_state = FOTG210_RH_STOPPING; + fotg210->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE); + fotg210_writel(fotg210, fotg210->command, + &fotg210->regs->command); + fotg210_writel(fotg210, 0, &fotg210->regs->intr_enable); + fotg210_handle_controller_death(fotg210); + + /* Handle completions when the controller stops */ + bh = 0; + } + + if (bh) + fotg210_work(fotg210); + spin_unlock(&fotg210->lock); + if (pcd_status) + usb_hcd_poll_rh_status(hcd); + return IRQ_HANDLED; +} + +/*-------------------------------------------------------------------------*/ + +/* + * non-error returns are a promise to giveback() the urb later + * we drop ownership so next owner (or urb unlink) can get it + * + * urb + dev is in hcd.self.controller.urb_list + * we're queueing TDs onto software and hardware lists + * + * hcd-specific init for hcpriv hasn't been done yet + * + * NOTE: control, bulk, and interrupt share the same code to append TDs + * to a (possibly active) QH, and the same QH scanning code. + */ +static int fotg210_urb_enqueue( + struct usb_hcd *hcd, + struct urb *urb, + gfp_t mem_flags +) { + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + struct list_head qtd_list; + + INIT_LIST_HEAD(&qtd_list); + + switch (usb_pipetype(urb->pipe)) { + case PIPE_CONTROL: + /* qh_completions() code doesn't handle all the fault cases + * in multi-TD control transfers. Even 1KB is rare anyway. + */ + if (urb->transfer_buffer_length > (16 * 1024)) + return -EMSGSIZE; + /* FALLTHROUGH */ + /* case PIPE_BULK: */ + default: + if (!qh_urb_transaction(fotg210, urb, &qtd_list, mem_flags)) + return -ENOMEM; + return submit_async(fotg210, urb, &qtd_list, mem_flags); + + case PIPE_INTERRUPT: + if (!qh_urb_transaction(fotg210, urb, &qtd_list, mem_flags)) + return -ENOMEM; + return intr_submit(fotg210, urb, &qtd_list, mem_flags); + + case PIPE_ISOCHRONOUS: + return itd_submit(fotg210, urb, mem_flags); + } +} + +/* remove from hardware lists + * completions normally happen asynchronously + */ + +static int fotg210_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + struct fotg210_qh *qh; + unsigned long flags; + int rc; + + spin_lock_irqsave(&fotg210->lock, flags); + rc = usb_hcd_check_unlink_urb(hcd, urb, status); + if (rc) + goto done; + + switch (usb_pipetype(urb->pipe)) { + /* case PIPE_CONTROL: */ + /* case PIPE_BULK:*/ + default: + qh = (struct fotg210_qh *) urb->hcpriv; + if (!qh) + break; + switch (qh->qh_state) { + case QH_STATE_LINKED: + case QH_STATE_COMPLETING: + start_unlink_async(fotg210, qh); + break; + case QH_STATE_UNLINK: + case QH_STATE_UNLINK_WAIT: + /* already started */ + break; + case QH_STATE_IDLE: + /* QH might be waiting for a Clear-TT-Buffer */ + qh_completions(fotg210, qh); + break; + } + break; + + case PIPE_INTERRUPT: + qh = (struct fotg210_qh *) urb->hcpriv; + if (!qh) + break; + switch (qh->qh_state) { + case QH_STATE_LINKED: + case QH_STATE_COMPLETING: + start_unlink_intr(fotg210, qh); + break; + case QH_STATE_IDLE: + qh_completions(fotg210, qh); + break; + default: + fotg210_dbg(fotg210, "bogus qh %p state %d\n", + qh, qh->qh_state); + goto done; + } + break; + + case PIPE_ISOCHRONOUS: + /* itd... */ + + /* wait till next completion, do it then. */ + /* completion irqs can wait up to 1024 msec, */ + break; + } +done: + spin_unlock_irqrestore(&fotg210->lock, flags); + return rc; +} + +/*-------------------------------------------------------------------------*/ + +/* bulk qh holds the data toggle */ + +static void +fotg210_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + unsigned long flags; + struct fotg210_qh *qh, *tmp; + + /* ASSERT: any requests/urbs are being unlinked */ + /* ASSERT: nobody can be submitting urbs for this any more */ + +rescan: + spin_lock_irqsave(&fotg210->lock, flags); + qh = ep->hcpriv; + if (!qh) + goto done; + + /* endpoints can be iso streams. for now, we don't + * accelerate iso completions ... so spin a while. + */ + if (qh->hw == NULL) { + struct fotg210_iso_stream *stream = ep->hcpriv; + + if (!list_empty(&stream->td_list)) + goto idle_timeout; + + /* BUG_ON(!list_empty(&stream->free_list)); */ + kfree(stream); + goto done; + } + + if (fotg210->rh_state < FOTG210_RH_RUNNING) + qh->qh_state = QH_STATE_IDLE; + switch (qh->qh_state) { + case QH_STATE_LINKED: + case QH_STATE_COMPLETING: + for (tmp = fotg210->async->qh_next.qh; + tmp && tmp != qh; + tmp = tmp->qh_next.qh) + continue; + /* periodic qh self-unlinks on empty, and a COMPLETING qh + * may already be unlinked. + */ + if (tmp) + start_unlink_async(fotg210, qh); + /* FALL THROUGH */ + case QH_STATE_UNLINK: /* wait for hw to finish? */ + case QH_STATE_UNLINK_WAIT: +idle_timeout: + spin_unlock_irqrestore(&fotg210->lock, flags); + schedule_timeout_uninterruptible(1); + goto rescan; + case QH_STATE_IDLE: /* fully unlinked */ + if (qh->clearing_tt) + goto idle_timeout; + if (list_empty(&qh->qtd_list)) { + qh_destroy(fotg210, qh); + break; + } + /* else FALL THROUGH */ + default: + /* caller was supposed to have unlinked any requests; + * that's not our job. just leak this memory. + */ + fotg210_err(fotg210, "qh %p (#%02x) state %d%s\n", + qh, ep->desc.bEndpointAddress, qh->qh_state, + list_empty(&qh->qtd_list) ? "" : "(has tds)"); + break; + } + done: + ep->hcpriv = NULL; + spin_unlock_irqrestore(&fotg210->lock, flags); +} + +static void +fotg210_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + struct fotg210_qh *qh; + int eptype = usb_endpoint_type(&ep->desc); + int epnum = usb_endpoint_num(&ep->desc); + int is_out = usb_endpoint_dir_out(&ep->desc); + unsigned long flags; + + if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT) + return; + + spin_lock_irqsave(&fotg210->lock, flags); + qh = ep->hcpriv; + + /* For Bulk and Interrupt endpoints we maintain the toggle state + * in the hardware; the toggle bits in udev aren't used at all. + * When an endpoint is reset by usb_clear_halt() we must reset + * the toggle bit in the QH. + */ + if (qh) { + usb_settoggle(qh->dev, epnum, is_out, 0); + if (!list_empty(&qh->qtd_list)) { + WARN_ONCE(1, "clear_halt for a busy endpoint\n"); + } else if (qh->qh_state == QH_STATE_LINKED || + qh->qh_state == QH_STATE_COMPLETING) { + + /* The toggle value in the QH can't be updated + * while the QH is active. Unlink it now; + * re-linking will call qh_refresh(). + */ + if (eptype == USB_ENDPOINT_XFER_BULK) + start_unlink_async(fotg210, qh); + else + start_unlink_intr(fotg210, qh); + } + } + spin_unlock_irqrestore(&fotg210->lock, flags); +} + +static int fotg210_get_frame(struct usb_hcd *hcd) +{ + struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); + return (fotg210_read_frame_index(fotg210) >> 3) % + fotg210->periodic_size; +} + +/*-------------------------------------------------------------------------*/ + +/* + * The EHCI in ChipIdea HDRC cannot be a separate module or device, + * because its registers (and irq) are shared between host/gadget/otg + * functions and in order to facilitate role switching we cannot + * give the fotg210 driver exclusive access to those. + */ +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_LICENSE("GPL"); + +static const struct hc_driver fotg210_fotg210_hc_driver = { + .description = hcd_name, + .product_desc = "Faraday USB2.0 Host Controller", + .hcd_priv_size = sizeof(struct fotg210_hcd), + + /* + * generic hardware linkage + */ + .irq = fotg210_irq, + .flags = HCD_MEMORY | HCD_USB2, + + /* + * basic lifecycle operations + */ + .reset = hcd_fotg210_init, + .start = fotg210_run, + .stop = fotg210_stop, + .shutdown = fotg210_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = fotg210_urb_enqueue, + .urb_dequeue = fotg210_urb_dequeue, + .endpoint_disable = fotg210_endpoint_disable, + .endpoint_reset = fotg210_endpoint_reset, + + /* + * scheduling support + */ + .get_frame_number = fotg210_get_frame, + + /* + * root hub support + */ + .hub_status_data = fotg210_hub_status_data, + .hub_control = fotg210_hub_control, + .bus_suspend = fotg210_bus_suspend, + .bus_resume = fotg210_bus_resume, + + .relinquish_port = fotg210_relinquish_port, + .port_handed_over = fotg210_port_handed_over, + + .clear_tt_buffer_complete = fotg210_clear_tt_buffer_complete, +}; + +static void fotg210_init(struct fotg210_hcd *fotg210) +{ + u32 value; + + iowrite32(GMIR_MDEV_INT | GMIR_MOTG_INT | GMIR_INT_POLARITY, + &fotg210->regs->gmir); + + value = ioread32(&fotg210->regs->otgcsr); + value &= ~OTGCSR_A_BUS_DROP; + value |= OTGCSR_A_BUS_REQ; + iowrite32(value, &fotg210->regs->otgcsr); +} + +/** + * fotg210_hcd_probe - initialize faraday FOTG210 HCDs + * + * Allocates basic resources for this USB host controller, and + * then invokes the start() method for the HCD associated with it + * through the hotplug entry's driver_data. + */ +static int fotg210_hcd_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct usb_hcd *hcd; + struct resource *res; + int irq; + int retval = -ENODEV; + struct fotg210_hcd *fotg210; + + if (usb_disabled()) + return -ENODEV; + + pdev->dev.power.power_state = PMSG_ON; + + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_err(dev, + "Found HC with no IRQ. Check %s setup!\n", + dev_name(dev)); + return -ENODEV; + } + + irq = res->start; + + hcd = usb_create_hcd(&fotg210_fotg210_hc_driver, dev, + dev_name(dev)); + if (!hcd) { + dev_err(dev, "failed to create hcd with err %d\n", retval); + retval = -ENOMEM; + goto fail_create_hcd; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, + "Found HC with no register addr. Check %s setup!\n", + dev_name(dev)); + retval = -ENODEV; + goto fail_request_resource; + } + + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + hcd->has_tt = 1; + + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, + fotg210_fotg210_hc_driver.description)) { + dev_dbg(dev, "controller already in use\n"); + retval = -EBUSY; + goto fail_request_resource; + } + + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (!res) { + dev_err(dev, + "Found HC with no register addr. Check %s setup!\n", + dev_name(dev)); + retval = -ENODEV; + goto fail_request_resource; + } + + hcd->regs = ioremap_nocache(res->start, resource_size(res)); + if (hcd->regs == NULL) { + dev_dbg(dev, "error mapping memory\n"); + retval = -EFAULT; + goto fail_ioremap; + } + + fotg210 = hcd_to_fotg210(hcd); + + fotg210->caps = hcd->regs; + + retval = fotg210_setup(hcd); + if (retval) + goto fail_add_hcd; + + fotg210_init(fotg210); + + retval = usb_add_hcd(hcd, irq, IRQF_SHARED); + if (retval) { + dev_err(dev, "failed to add hcd with err %d\n", retval); + goto fail_add_hcd; + } + + return retval; + +fail_add_hcd: + iounmap(hcd->regs); +fail_ioremap: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +fail_request_resource: + usb_put_hcd(hcd); +fail_create_hcd: + dev_err(dev, "init %s fail, %d\n", dev_name(dev), retval); + return retval; +} + +/** + * fotg210_hcd_remove - shutdown processing for EHCI HCDs + * @dev: USB Host Controller being removed + * + */ +static int fotg210_hcd_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct usb_hcd *hcd = dev_get_drvdata(dev); + + if (!hcd) + return 0; + + usb_remove_hcd(hcd); + iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + usb_put_hcd(hcd); + + return 0; +} + +static struct platform_driver fotg210_hcd_driver = { + .driver = { + .name = "fotg210-hcd", + }, + .probe = fotg210_hcd_probe, + .remove = fotg210_hcd_remove, +}; + +static int __init fotg210_hcd_init(void) +{ + int retval = 0; + + if (usb_disabled()) + return -ENODEV; + + pr_info("%s: " DRIVER_DESC "\n", hcd_name); + set_bit(USB_EHCI_LOADED, &usb_hcds_loaded); + if (test_bit(USB_UHCI_LOADED, &usb_hcds_loaded) || + test_bit(USB_OHCI_LOADED, &usb_hcds_loaded)) + pr_warn(KERN_WARNING "Warning! fotg210_hcd should always be loaded before uhci_hcd and ohci_hcd, not after\n"); + + pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd\n", + hcd_name, + sizeof(struct fotg210_qh), sizeof(struct fotg210_qtd), + sizeof(struct fotg210_itd)); + +#ifdef DEBUG + fotg210_debug_root = debugfs_create_dir("fotg210", usb_debug_root); + if (!fotg210_debug_root) { + retval = -ENOENT; + goto err_debug; + } +#endif + + retval = platform_driver_register(&fotg210_hcd_driver); + if (retval < 0) + goto clean; + return retval; + + platform_driver_unregister(&fotg210_hcd_driver); +clean: +#ifdef DEBUG + debugfs_remove(fotg210_debug_root); + fotg210_debug_root = NULL; +err_debug: +#endif + clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded); + return retval; +} +module_init(fotg210_hcd_init); + +static void __exit fotg210_hcd_cleanup(void) +{ + platform_driver_unregister(&fotg210_hcd_driver); +#ifdef DEBUG + debugfs_remove(fotg210_debug_root); +#endif + clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded); +} +module_exit(fotg210_hcd_cleanup); diff --git a/drivers/usb/host/fotg210.h b/drivers/usb/host/fotg210.h new file mode 100644 index 000000000000..8920f9d32564 --- /dev/null +++ b/drivers/usb/host/fotg210.h @@ -0,0 +1,750 @@ +#ifndef __LINUX_FOTG210_H +#define __LINUX_FOTG210_H + +/* definitions used for the EHCI driver */ + +/* + * __hc32 and __hc16 are "Host Controller" types, they may be equivalent to + * __leXX (normally) or __beXX (given FOTG210_BIG_ENDIAN_DESC), depending on + * the host controller implementation. + * + * To facilitate the strongest possible byte-order checking from "sparse" + * and so on, we use __leXX unless that's not practical. + */ +#define __hc32 __le32 +#define __hc16 __le16 + +/* statistics can be kept for tuning/monitoring */ +struct fotg210_stats { + /* irq usage */ + unsigned long normal; + unsigned long error; + unsigned long iaa; + unsigned long lost_iaa; + + /* termination of urbs from core */ + unsigned long complete; + unsigned long unlink; +}; + +/* fotg210_hcd->lock guards shared data against other CPUs: + * fotg210_hcd: async, unlink, periodic (and shadow), ... + * usb_host_endpoint: hcpriv + * fotg210_qh: qh_next, qtd_list + * fotg210_qtd: qtd_list + * + * Also, hold this lock when talking to HC registers or + * when updating hw_* fields in shared qh/qtd/... structures. + */ + +#define FOTG210_MAX_ROOT_PORTS 1 /* see HCS_N_PORTS */ + +/* + * fotg210_rh_state values of FOTG210_RH_RUNNING or above mean that the + * controller may be doing DMA. Lower values mean there's no DMA. + */ +enum fotg210_rh_state { + FOTG210_RH_HALTED, + FOTG210_RH_SUSPENDED, + FOTG210_RH_RUNNING, + FOTG210_RH_STOPPING +}; + +/* + * Timer events, ordered by increasing delay length. + * Always update event_delays_ns[] and event_handlers[] (defined in + * ehci-timer.c) in parallel with this list. + */ +enum fotg210_hrtimer_event { + FOTG210_HRTIMER_POLL_ASS, /* Poll for async schedule off */ + FOTG210_HRTIMER_POLL_PSS, /* Poll for periodic schedule off */ + FOTG210_HRTIMER_POLL_DEAD, /* Wait for dead controller to stop */ + FOTG210_HRTIMER_UNLINK_INTR, /* Wait for interrupt QH unlink */ + FOTG210_HRTIMER_FREE_ITDS, /* Wait for unused iTDs and siTDs */ + FOTG210_HRTIMER_ASYNC_UNLINKS, /* Unlink empty async QHs */ + FOTG210_HRTIMER_IAA_WATCHDOG, /* Handle lost IAA interrupts */ + FOTG210_HRTIMER_DISABLE_PERIODIC, /* Wait to disable periodic sched */ + FOTG210_HRTIMER_DISABLE_ASYNC, /* Wait to disable async sched */ + FOTG210_HRTIMER_IO_WATCHDOG, /* Check for missing IRQs */ + FOTG210_HRTIMER_NUM_EVENTS /* Must come last */ +}; +#define FOTG210_HRTIMER_NO_EVENT 99 + +struct fotg210_hcd { /* one per controller */ + /* timing support */ + enum fotg210_hrtimer_event next_hrtimer_event; + unsigned enabled_hrtimer_events; + ktime_t hr_timeouts[FOTG210_HRTIMER_NUM_EVENTS]; + struct hrtimer hrtimer; + + int PSS_poll_count; + int ASS_poll_count; + int died_poll_count; + + /* glue to PCI and HCD framework */ + struct fotg210_caps __iomem *caps; + struct fotg210_regs __iomem *regs; + struct fotg210_dbg_port __iomem *debug; + + __u32 hcs_params; /* cached register copy */ + spinlock_t lock; + enum fotg210_rh_state rh_state; + + /* general schedule support */ + bool scanning:1; + bool need_rescan:1; + bool intr_unlinking:1; + bool async_unlinking:1; + bool shutdown:1; + struct fotg210_qh *qh_scan_next; + + /* async schedule support */ + struct fotg210_qh *async; + struct fotg210_qh *dummy; /* For AMD quirk use */ + struct fotg210_qh *async_unlink; + struct fotg210_qh *async_unlink_last; + struct fotg210_qh *async_iaa; + unsigned async_unlink_cycle; + unsigned async_count; /* async activity count */ + + /* periodic schedule support */ +#define DEFAULT_I_TDPS 1024 /* some HCs can do less */ + unsigned periodic_size; + __hc32 *periodic; /* hw periodic table */ + dma_addr_t periodic_dma; + struct list_head intr_qh_list; + unsigned i_thresh; /* uframes HC might cache */ + + union fotg210_shadow *pshadow; /* mirror hw periodic table */ + struct fotg210_qh *intr_unlink; + struct fotg210_qh *intr_unlink_last; + unsigned intr_unlink_cycle; + unsigned now_frame; /* frame from HC hardware */ + unsigned next_frame; /* scan periodic, start here */ + unsigned intr_count; /* intr activity count */ + unsigned isoc_count; /* isoc activity count */ + unsigned periodic_count; /* periodic activity count */ + /* max periodic time per uframe */ + unsigned uframe_periodic_max; + + + /* list of itds completed while now_frame was still active */ + struct list_head cached_itd_list; + struct fotg210_itd *last_itd_to_free; + + /* per root hub port */ + unsigned long reset_done[FOTG210_MAX_ROOT_PORTS]; + + /* bit vectors (one bit per port) */ + unsigned long bus_suspended; /* which ports were + already suspended at the start of a bus suspend */ + unsigned long companion_ports; /* which ports are + dedicated to the companion controller */ + unsigned long owned_ports; /* which ports are + owned by the companion during a bus suspend */ + unsigned long port_c_suspend; /* which ports have + the change-suspend feature turned on */ + unsigned long suspended_ports; /* which ports are + suspended */ + unsigned long resuming_ports; /* which ports have + started to resume */ + + /* per-HC memory pools (could be per-bus, but ...) */ + struct dma_pool *qh_pool; /* qh per active urb */ + struct dma_pool *qtd_pool; /* one or more per qh */ + struct dma_pool *itd_pool; /* itd per iso urb */ + + unsigned random_frame; + unsigned long next_statechange; + ktime_t last_periodic_enable; + u32 command; + + /* SILICON QUIRKS */ + unsigned need_io_watchdog:1; + unsigned fs_i_thresh:1; /* Intel iso scheduling */ + + u8 sbrn; /* packed release number */ + + /* irq statistics */ +#ifdef FOTG210_STATS + struct fotg210_stats stats; +# define COUNT(x) ((x)++) +#else +# define COUNT(x) +#endif + + /* debug files */ +#ifdef DEBUG + struct dentry *debug_dir; +#endif +}; + +/* convert between an HCD pointer and the corresponding FOTG210_HCD */ +static inline struct fotg210_hcd *hcd_to_fotg210(struct usb_hcd *hcd) +{ + return (struct fotg210_hcd *)(hcd->hcd_priv); +} +static inline struct usb_hcd *fotg210_to_hcd(struct fotg210_hcd *fotg210) +{ + return container_of((void *) fotg210, struct usb_hcd, hcd_priv); +} + +/*-------------------------------------------------------------------------*/ + +/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */ + +/* Section 2.2 Host Controller Capability Registers */ +struct fotg210_caps { + /* these fields are specified as 8 and 16 bit registers, + * but some hosts can't perform 8 or 16 bit PCI accesses. + * some hosts treat caplength and hciversion as parts of a 32-bit + * register, others treat them as two separate registers, this + * affects the memory map for big endian controllers. + */ + u32 hc_capbase; +#define HC_LENGTH(fotg210, p) (0x00ff&((p) >> /* bits 7:0 / offset 00h */ \ + (fotg210_big_endian_capbase(fotg210) ? 24 : 0))) +#define HC_VERSION(fotg210, p) (0xffff&((p) >> /* bits 31:16 / offset 02h */ \ + (fotg210_big_endian_capbase(fotg210) ? 0 : 16))) + u32 hcs_params; /* HCSPARAMS - offset 0x4 */ +#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */ + + u32 hcc_params; /* HCCPARAMS - offset 0x8 */ +#define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */ +#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/ + u8 portroute[8]; /* nibbles for routing - offset 0xC */ +}; + + +/* Section 2.3 Host Controller Operational Registers */ +struct fotg210_regs { + + /* USBCMD: offset 0x00 */ + u32 command; + +/* EHCI 1.1 addendum */ +/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */ +#define CMD_PARK (1<<11) /* enable "park" on async qh */ +#define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */ +#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */ +#define CMD_ASE (1<<5) /* async schedule enable */ +#define CMD_PSE (1<<4) /* periodic schedule enable */ +/* 3:2 is periodic frame list size */ +#define CMD_RESET (1<<1) /* reset HC not bus */ +#define CMD_RUN (1<<0) /* start/stop HC */ + + /* USBSTS: offset 0x04 */ + u32 status; +#define STS_ASS (1<<15) /* Async Schedule Status */ +#define STS_PSS (1<<14) /* Periodic Schedule Status */ +#define STS_RECL (1<<13) /* Reclamation */ +#define STS_HALT (1<<12) /* Not running (any reason) */ +/* some bits reserved */ + /* these STS_* flags are also intr_enable bits (USBINTR) */ +#define STS_IAA (1<<5) /* Interrupted on async advance */ +#define STS_FATAL (1<<4) /* such as some PCI access errors */ +#define STS_FLR (1<<3) /* frame list rolled over */ +#define STS_PCD (1<<2) /* port change detect */ +#define STS_ERR (1<<1) /* "error" completion (overflow, ...) */ +#define STS_INT (1<<0) /* "normal" completion (short, ...) */ + + /* USBINTR: offset 0x08 */ + u32 intr_enable; + + /* FRINDEX: offset 0x0C */ + u32 frame_index; /* current microframe number */ + /* CTRLDSSEGMENT: offset 0x10 */ + u32 segment; /* address bits 63:32 if needed */ + /* PERIODICLISTBASE: offset 0x14 */ + u32 frame_list; /* points to periodic list */ + /* ASYNCLISTADDR: offset 0x18 */ + u32 async_next; /* address of next async queue head */ + + u32 reserved1; + /* PORTSC: offset 0x20 */ + u32 port_status; +/* 31:23 reserved */ +#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10)) /* USB 1.1 device */ +#define PORT_RESET (1<<8) /* reset port */ +#define PORT_SUSPEND (1<<7) /* suspend port */ +#define PORT_RESUME (1<<6) /* resume it */ +#define PORT_PEC (1<<3) /* port enable change */ +#define PORT_PE (1<<2) /* port enable */ +#define PORT_CSC (1<<1) /* connect status change */ +#define PORT_CONNECT (1<<0) /* device connected */ +#define PORT_RWC_BITS (PORT_CSC | PORT_PEC) + u32 reserved2[19]; + + /* OTGCSR: offet 0x70 */ + u32 otgcsr; +#define OTGCSR_HOST_SPD_TYP (3 << 22) +#define OTGCSR_A_BUS_DROP (1 << 5) +#define OTGCSR_A_BUS_REQ (1 << 4) + + /* OTGISR: offset 0x74 */ + u32 otgisr; +#define OTGISR_OVC (1 << 10) + + u32 reserved3[15]; + + /* GMIR: offset 0xB4 */ + u32 gmir; +#define GMIR_INT_POLARITY (1 << 3) /*Active High*/ +#define GMIR_MHC_INT (1 << 2) +#define GMIR_MOTG_INT (1 << 1) +#define GMIR_MDEV_INT (1 << 0) +}; + +/* Appendix C, Debug port ... intended for use with special "debug devices" + * that can help if there's no serial console. (nonstandard enumeration.) + */ +struct fotg210_dbg_port { + u32 control; +#define DBGP_OWNER (1<<30) +#define DBGP_ENABLED (1<<28) +#define DBGP_DONE (1<<16) +#define DBGP_INUSE (1<<10) +#define DBGP_ERRCODE(x) (((x)>>7)&0x07) +# define DBGP_ERR_BAD 1 +# define DBGP_ERR_SIGNAL 2 +#define DBGP_ERROR (1<<6) +#define DBGP_GO (1<<5) +#define DBGP_OUT (1<<4) +#define DBGP_LEN(x) (((x)>>0)&0x0f) + u32 pids; +#define DBGP_PID_GET(x) (((x)>>16)&0xff) +#define DBGP_PID_SET(data, tok) (((data)<<8)|(tok)) + u32 data03; + u32 data47; + u32 address; +#define DBGP_EPADDR(dev, ep) (((dev)<<8)|(ep)) +}; + +#ifdef CONFIG_EARLY_PRINTK_DBGP +#include <linux/init.h> +extern int __init early_dbgp_init(char *s); +extern struct console early_dbgp_console; +#endif /* CONFIG_EARLY_PRINTK_DBGP */ + +struct usb_hcd; + +static inline int xen_dbgp_reset_prep(struct usb_hcd *hcd) +{ + return 1; /* Shouldn't this be 0? */ +} + +static inline int xen_dbgp_external_startup(struct usb_hcd *hcd) +{ + return -1; +} + +#ifdef CONFIG_EARLY_PRINTK_DBGP +/* Call backs from fotg210 host driver to fotg210 debug driver */ +extern int dbgp_external_startup(struct usb_hcd *); +extern int dbgp_reset_prep(struct usb_hcd *hcd); +#else +static inline int dbgp_reset_prep(struct usb_hcd *hcd) +{ + return xen_dbgp_reset_prep(hcd); +} +static inline int dbgp_external_startup(struct usb_hcd *hcd) +{ + return xen_dbgp_external_startup(hcd); +} +#endif + +/*-------------------------------------------------------------------------*/ + +#define QTD_NEXT(fotg210, dma) cpu_to_hc32(fotg210, (u32)dma) + +/* + * EHCI Specification 0.95 Section 3.5 + * QTD: describe data transfer components (buffer, direction, ...) + * See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram". + * + * These are associated only with "QH" (Queue Head) structures, + * used with control, bulk, and interrupt transfers. + */ +struct fotg210_qtd { + /* first part defined by EHCI spec */ + __hc32 hw_next; /* see EHCI 3.5.1 */ + __hc32 hw_alt_next; /* see EHCI 3.5.2 */ + __hc32 hw_token; /* see EHCI 3.5.3 */ +#define QTD_TOGGLE (1 << 31) /* data toggle */ +#define QTD_LENGTH(tok) (((tok)>>16) & 0x7fff) +#define QTD_IOC (1 << 15) /* interrupt on complete */ +#define QTD_CERR(tok) (((tok)>>10) & 0x3) +#define QTD_PID(tok) (((tok)>>8) & 0x3) +#define QTD_STS_ACTIVE (1 << 7) /* HC may execute this */ +#define QTD_STS_HALT (1 << 6) /* halted on error */ +#define QTD_STS_DBE (1 << 5) /* data buffer error (in HC) */ +#define QTD_STS_BABBLE (1 << 4) /* device was babbling (qtd halted) */ +#define QTD_STS_XACT (1 << 3) /* device gave illegal response */ +#define QTD_STS_MMF (1 << 2) /* incomplete split transaction */ +#define QTD_STS_STS (1 << 1) /* split transaction state */ +#define QTD_STS_PING (1 << 0) /* issue PING? */ + +#define ACTIVE_BIT(fotg210) cpu_to_hc32(fotg210, QTD_STS_ACTIVE) +#define HALT_BIT(fotg210) cpu_to_hc32(fotg210, QTD_STS_HALT) +#define STATUS_BIT(fotg210) cpu_to_hc32(fotg210, QTD_STS_STS) + + __hc32 hw_buf[5]; /* see EHCI 3.5.4 */ + __hc32 hw_buf_hi[5]; /* Appendix B */ + + /* the rest is HCD-private */ + dma_addr_t qtd_dma; /* qtd address */ + struct list_head qtd_list; /* sw qtd list */ + struct urb *urb; /* qtd's urb */ + size_t length; /* length of buffer */ +} __aligned(32); + +/* mask NakCnt+T in qh->hw_alt_next */ +#define QTD_MASK(fotg210) cpu_to_hc32(fotg210, ~0x1f) + +#define IS_SHORT_READ(token) (QTD_LENGTH(token) != 0 && QTD_PID(token) == 1) + +/*-------------------------------------------------------------------------*/ + +/* type tag from {qh,itd,fstn}->hw_next */ +#define Q_NEXT_TYPE(fotg210, dma) ((dma) & cpu_to_hc32(fotg210, 3 << 1)) + +/* + * Now the following defines are not converted using the + * cpu_to_le32() macro anymore, since we have to support + * "dynamic" switching between be and le support, so that the driver + * can be used on one system with SoC EHCI controller using big-endian + * descriptors as well as a normal little-endian PCI EHCI controller. + */ +/* values for that type tag */ +#define Q_TYPE_ITD (0 << 1) +#define Q_TYPE_QH (1 << 1) +#define Q_TYPE_SITD (2 << 1) +#define Q_TYPE_FSTN (3 << 1) + +/* next async queue entry, or pointer to interrupt/periodic QH */ +#define QH_NEXT(fotg210, dma) \ + (cpu_to_hc32(fotg210, (((u32)dma)&~0x01f)|Q_TYPE_QH)) + +/* for periodic/async schedules and qtd lists, mark end of list */ +#define FOTG210_LIST_END(fotg210) \ + cpu_to_hc32(fotg210, 1) /* "null pointer" to hw */ + +/* + * Entries in periodic shadow table are pointers to one of four kinds + * of data structure. That's dictated by the hardware; a type tag is + * encoded in the low bits of the hardware's periodic schedule. Use + * Q_NEXT_TYPE to get the tag. + * + * For entries in the async schedule, the type tag always says "qh". + */ +union fotg210_shadow { + struct fotg210_qh *qh; /* Q_TYPE_QH */ + struct fotg210_itd *itd; /* Q_TYPE_ITD */ + struct fotg210_fstn *fstn; /* Q_TYPE_FSTN */ + __hc32 *hw_next; /* (all types) */ + void *ptr; +}; + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI Specification 0.95 Section 3.6 + * QH: describes control/bulk/interrupt endpoints + * See Fig 3-7 "Queue Head Structure Layout". + * + * These appear in both the async and (for interrupt) periodic schedules. + */ + +/* first part defined by EHCI spec */ +struct fotg210_qh_hw { + __hc32 hw_next; /* see EHCI 3.6.1 */ + __hc32 hw_info1; /* see EHCI 3.6.2 */ +#define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */ +#define QH_HEAD (1 << 15) /* Head of async reclamation list */ +#define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */ +#define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */ +#define QH_LOW_SPEED (1 << 12) +#define QH_FULL_SPEED (0 << 12) +#define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */ + __hc32 hw_info2; /* see EHCI 3.6.2 */ +#define QH_SMASK 0x000000ff +#define QH_CMASK 0x0000ff00 +#define QH_HUBADDR 0x007f0000 +#define QH_HUBPORT 0x3f800000 +#define QH_MULT 0xc0000000 + __hc32 hw_current; /* qtd list - see EHCI 3.6.4 */ + + /* qtd overlay (hardware parts of a struct fotg210_qtd) */ + __hc32 hw_qtd_next; + __hc32 hw_alt_next; + __hc32 hw_token; + __hc32 hw_buf[5]; + __hc32 hw_buf_hi[5]; +} __aligned(32); + +struct fotg210_qh { + struct fotg210_qh_hw *hw; /* Must come first */ + /* the rest is HCD-private */ + dma_addr_t qh_dma; /* address of qh */ + union fotg210_shadow qh_next; /* ptr to qh; or periodic */ + struct list_head qtd_list; /* sw qtd list */ + struct list_head intr_node; /* list of intr QHs */ + struct fotg210_qtd *dummy; + struct fotg210_qh *unlink_next; /* next on unlink list */ + + unsigned unlink_cycle; + + u8 needs_rescan; /* Dequeue during giveback */ + u8 qh_state; +#define QH_STATE_LINKED 1 /* HC sees this */ +#define QH_STATE_UNLINK 2 /* HC may still see this */ +#define QH_STATE_IDLE 3 /* HC doesn't see this */ +#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on unlink q */ +#define QH_STATE_COMPLETING 5 /* don't touch token.HALT */ + + u8 xacterrs; /* XactErr retry counter */ +#define QH_XACTERR_MAX 32 /* XactErr retry limit */ + + /* periodic schedule info */ + u8 usecs; /* intr bandwidth */ + u8 gap_uf; /* uframes split/csplit gap */ + u8 c_usecs; /* ... split completion bw */ + u16 tt_usecs; /* tt downstream bandwidth */ + unsigned short period; /* polling interval */ + unsigned short start; /* where polling starts */ +#define NO_FRAME ((unsigned short)~0) /* pick new start */ + + struct usb_device *dev; /* access to TT */ + unsigned is_out:1; /* bulk or intr OUT */ + unsigned clearing_tt:1; /* Clear-TT-Buf in progress */ +}; + +/*-------------------------------------------------------------------------*/ + +/* description of one iso transaction (up to 3 KB data if highspeed) */ +struct fotg210_iso_packet { + /* These will be copied to iTD when scheduling */ + u64 bufp; /* itd->hw_bufp{,_hi}[pg] |= */ + __hc32 transaction; /* itd->hw_transaction[i] |= */ + u8 cross; /* buf crosses pages */ + /* for full speed OUT splits */ + u32 buf1; +}; + +/* temporary schedule data for packets from iso urbs (both speeds) + * each packet is one logical usb transaction to the device (not TT), + * beginning at stream->next_uframe + */ +struct fotg210_iso_sched { + struct list_head td_list; + unsigned span; + struct fotg210_iso_packet packet[0]; +}; + +/* + * fotg210_iso_stream - groups all (s)itds for this endpoint. + * acts like a qh would, if EHCI had them for ISO. + */ +struct fotg210_iso_stream { + /* first field matches fotg210_hq, but is NULL */ + struct fotg210_qh_hw *hw; + + u8 bEndpointAddress; + u8 highspeed; + struct list_head td_list; /* queued itds */ + struct list_head free_list; /* list of unused itds */ + struct usb_device *udev; + struct usb_host_endpoint *ep; + + /* output of (re)scheduling */ + int next_uframe; + __hc32 splits; + + /* the rest is derived from the endpoint descriptor, + * trusting urb->interval == f(epdesc->bInterval) and + * including the extra info for hw_bufp[0..2] + */ + u8 usecs, c_usecs; + u16 interval; + u16 tt_usecs; + u16 maxp; + u16 raw_mask; + unsigned bandwidth; + + /* This is used to initialize iTD's hw_bufp fields */ + __hc32 buf0; + __hc32 buf1; + __hc32 buf2; + + /* this is used to initialize sITD's tt info */ + __hc32 address; +}; + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI Specification 0.95 Section 3.3 + * Fig 3-4 "Isochronous Transaction Descriptor (iTD)" + * + * Schedule records for high speed iso xfers + */ +struct fotg210_itd { + /* first part defined by EHCI spec */ + __hc32 hw_next; /* see EHCI 3.3.1 */ + __hc32 hw_transaction[8]; /* see EHCI 3.3.2 */ +#define FOTG210_ISOC_ACTIVE (1<<31) /* activate transfer this slot */ +#define FOTG210_ISOC_BUF_ERR (1<<30) /* Data buffer error */ +#define FOTG210_ISOC_BABBLE (1<<29) /* babble detected */ +#define FOTG210_ISOC_XACTERR (1<<28) /* XactErr - transaction error */ +#define FOTG210_ITD_LENGTH(tok) (((tok)>>16) & 0x0fff) +#define FOTG210_ITD_IOC (1 << 15) /* interrupt on complete */ + +#define ITD_ACTIVE(fotg210) cpu_to_hc32(fotg210, FOTG210_ISOC_ACTIVE) + + __hc32 hw_bufp[7]; /* see EHCI 3.3.3 */ + __hc32 hw_bufp_hi[7]; /* Appendix B */ + + /* the rest is HCD-private */ + dma_addr_t itd_dma; /* for this itd */ + union fotg210_shadow itd_next; /* ptr to periodic q entry */ + + struct urb *urb; + struct fotg210_iso_stream *stream; /* endpoint's queue */ + struct list_head itd_list; /* list of stream's itds */ + + /* any/all hw_transactions here may be used by that urb */ + unsigned frame; /* where scheduled */ + unsigned pg; + unsigned index[8]; /* in urb->iso_frame_desc */ +} __aligned(32); + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI Specification 0.96 Section 3.7 + * Periodic Frame Span Traversal Node (FSTN) + * + * Manages split interrupt transactions (using TT) that span frame boundaries + * into uframes 0/1; see 4.12.2.2. In those uframes, a "save place" FSTN + * makes the HC jump (back) to a QH to scan for fs/ls QH completions until + * it hits a "restore" FSTN; then it returns to finish other uframe 0/1 work. + */ +struct fotg210_fstn { + __hc32 hw_next; /* any periodic q entry */ + __hc32 hw_prev; /* qh or FOTG210_LIST_END */ + + /* the rest is HCD-private */ + dma_addr_t fstn_dma; + union fotg210_shadow fstn_next; /* ptr to periodic q entry */ +} __aligned(32); + +/*-------------------------------------------------------------------------*/ + +/* Prepare the PORTSC wakeup flags during controller suspend/resume */ + +#define fotg210_prepare_ports_for_controller_suspend(fotg210, do_wakeup) \ + fotg210_adjust_port_wakeup_flags(fotg210, true, do_wakeup); + +#define fotg210_prepare_ports_for_controller_resume(fotg210) \ + fotg210_adjust_port_wakeup_flags(fotg210, false, false); + +/*-------------------------------------------------------------------------*/ + +/* + * Some EHCI controllers have a Transaction Translator built into the + * root hub. This is a non-standard feature. Each controller will need + * to add code to the following inline functions, and call them as + * needed (mostly in root hub code). + */ + +static inline unsigned int +fotg210_get_speed(struct fotg210_hcd *fotg210, unsigned int portsc) +{ + return (readl(&fotg210->regs->otgcsr) + & OTGCSR_HOST_SPD_TYP) >> 22; +} + +/* Returns the speed of a device attached to a port on the root hub. */ +static inline unsigned int +fotg210_port_speed(struct fotg210_hcd *fotg210, unsigned int portsc) +{ + switch (fotg210_get_speed(fotg210, portsc)) { + case 0: + return 0; + case 1: + return USB_PORT_STAT_LOW_SPEED; + case 2: + default: + return USB_PORT_STAT_HIGH_SPEED; + } +} + +/*-------------------------------------------------------------------------*/ + +#define fotg210_has_fsl_portno_bug(e) (0) + +/* + * While most USB host controllers implement their registers in + * little-endian format, a minority (celleb companion chip) implement + * them in big endian format. + * + * This attempts to support either format at compile time without a + * runtime penalty, or both formats with the additional overhead + * of checking a flag bit. + * + */ + +#define fotg210_big_endian_mmio(e) 0 +#define fotg210_big_endian_capbase(e) 0 + +static inline unsigned int fotg210_readl(const struct fotg210_hcd *fotg210, + __u32 __iomem *regs) +{ + return readl(regs); +} + +static inline void fotg210_writel(const struct fotg210_hcd *fotg210, + const unsigned int val, __u32 __iomem *regs) +{ + writel(val, regs); +} + +/* cpu to fotg210 */ +static inline __hc32 cpu_to_hc32(const struct fotg210_hcd *fotg210, const u32 x) +{ + return cpu_to_le32(x); +} + +/* fotg210 to cpu */ +static inline u32 hc32_to_cpu(const struct fotg210_hcd *fotg210, const __hc32 x) +{ + return le32_to_cpu(x); +} + +static inline u32 hc32_to_cpup(const struct fotg210_hcd *fotg210, + const __hc32 *x) +{ + return le32_to_cpup(x); +} + +/*-------------------------------------------------------------------------*/ + +static inline unsigned fotg210_read_frame_index(struct fotg210_hcd *fotg210) +{ + return fotg210_readl(fotg210, &fotg210->regs->frame_index); +} + +#define fotg210_itdlen(urb, desc, t) ({ \ + usb_pipein((urb)->pipe) ? \ + (desc)->length - FOTG210_ITD_LENGTH(t) : \ + FOTG210_ITD_LENGTH(t); \ +}) +/*-------------------------------------------------------------------------*/ + +#ifndef DEBUG +#define STUB_DEBUG_FILES +#endif /* DEBUG */ + +/*-------------------------------------------------------------------------*/ + +#endif /* __LINUX_FOTG210_H */ diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c index 11e0b79ff9d5..cfbff7161828 100644 --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -258,7 +258,7 @@ static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev) int fsl_usb2_mpc5121_init(struct platform_device *pdev) { - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); struct clk *clk; char clk_name[10]; int base, clk_num; @@ -298,7 +298,7 @@ int fsl_usb2_mpc5121_init(struct platform_device *pdev) static void fsl_usb2_mpc5121_exit(struct platform_device *pdev) { - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); pdata->regs = NULL; diff --git a/drivers/usb/host/fusbh200-hcd.c b/drivers/usb/host/fusbh200-hcd.c new file mode 100644 index 000000000000..299253c826c7 --- /dev/null +++ b/drivers/usb/host/fusbh200-hcd.c @@ -0,0 +1,5972 @@ +/* + * Faraday FUSBH200 EHCI-like driver + * + * Copyright (c) 2013 Faraday Technology Corporation + * + * Author: Yuan-Hsin Chen <yhchen@faraday-tech.com> + * Feng-Hsin Chiang <john453@faraday-tech.com> + * Po-Yu Chuang <ratbert.chuang@gmail.com> + * + * Most of code borrowed from the Linux-3.7 EHCI driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/device.h> +#include <linux/dmapool.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/vmalloc.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/hrtimer.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> +#include <linux/moduleparam.h> +#include <linux/dma-mapping.h> +#include <linux/debugfs.h> +#include <linux/slab.h> +#include <linux/uaccess.h> +#include <linux/platform_device.h> + +#include <asm/byteorder.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/unaligned.h> + +/*-------------------------------------------------------------------------*/ +#define DRIVER_AUTHOR "Yuan-Hsin Chen" +#define DRIVER_DESC "FUSBH200 Host Controller (EHCI) Driver" + +static const char hcd_name [] = "fusbh200_hcd"; + +#undef VERBOSE_DEBUG +#undef FUSBH200_URB_TRACE + +#ifdef DEBUG +#define FUSBH200_STATS +#endif + +/* magic numbers that can affect system performance */ +#define FUSBH200_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */ +#define FUSBH200_TUNE_RL_HS 4 /* nak throttle; see 4.9 */ +#define FUSBH200_TUNE_RL_TT 0 +#define FUSBH200_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */ +#define FUSBH200_TUNE_MULT_TT 1 +/* + * Some drivers think it's safe to schedule isochronous transfers more than + * 256 ms into the future (partly as a result of an old bug in the scheduling + * code). In an attempt to avoid trouble, we will use a minimum scheduling + * length of 512 frames instead of 256. + */ +#define FUSBH200_TUNE_FLS 1 /* (medium) 512-frame schedule */ + +/* Initial IRQ latency: faster than hw default */ +static int log2_irq_thresh = 0; // 0 to 6 +module_param (log2_irq_thresh, int, S_IRUGO); +MODULE_PARM_DESC (log2_irq_thresh, "log2 IRQ latency, 1-64 microframes"); + +/* initial park setting: slower than hw default */ +static unsigned park = 0; +module_param (park, uint, S_IRUGO); +MODULE_PARM_DESC (park, "park setting; 1-3 back-to-back async packets"); + +/* for link power management(LPM) feature */ +static unsigned int hird; +module_param(hird, int, S_IRUGO); +MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us"); + +#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT) + +#include "fusbh200.h" + +/*-------------------------------------------------------------------------*/ + +#define fusbh200_dbg(fusbh200, fmt, args...) \ + dev_dbg (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args ) +#define fusbh200_err(fusbh200, fmt, args...) \ + dev_err (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args ) +#define fusbh200_info(fusbh200, fmt, args...) \ + dev_info (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args ) +#define fusbh200_warn(fusbh200, fmt, args...) \ + dev_warn (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args ) + +#ifdef VERBOSE_DEBUG +# define fusbh200_vdbg fusbh200_dbg +#else + static inline void fusbh200_vdbg(struct fusbh200_hcd *fusbh200, ...) {} +#endif + +#ifdef DEBUG + +/* check the values in the HCSPARAMS register + * (host controller _Structural_ parameters) + * see EHCI spec, Table 2-4 for each value + */ +static void dbg_hcs_params (struct fusbh200_hcd *fusbh200, char *label) +{ + u32 params = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params); + + fusbh200_dbg (fusbh200, + "%s hcs_params 0x%x ports=%d\n", + label, params, + HCS_N_PORTS (params) + ); +} +#else + +static inline void dbg_hcs_params (struct fusbh200_hcd *fusbh200, char *label) {} + +#endif + +#ifdef DEBUG + +/* check the values in the HCCPARAMS register + * (host controller _Capability_ parameters) + * see EHCI Spec, Table 2-5 for each value + * */ +static void dbg_hcc_params (struct fusbh200_hcd *fusbh200, char *label) +{ + u32 params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params); + + fusbh200_dbg (fusbh200, + "%s hcc_params %04x uframes %s%s\n", + label, + params, + HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", + HCC_CANPARK(params) ? " park" : ""); +} +#else + +static inline void dbg_hcc_params (struct fusbh200_hcd *fusbh200, char *label) {} + +#endif + +#ifdef DEBUG + +static void __maybe_unused +dbg_qtd (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd) +{ + fusbh200_dbg(fusbh200, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd, + hc32_to_cpup(fusbh200, &qtd->hw_next), + hc32_to_cpup(fusbh200, &qtd->hw_alt_next), + hc32_to_cpup(fusbh200, &qtd->hw_token), + hc32_to_cpup(fusbh200, &qtd->hw_buf [0])); + if (qtd->hw_buf [1]) + fusbh200_dbg(fusbh200, " p1=%08x p2=%08x p3=%08x p4=%08x\n", + hc32_to_cpup(fusbh200, &qtd->hw_buf[1]), + hc32_to_cpup(fusbh200, &qtd->hw_buf[2]), + hc32_to_cpup(fusbh200, &qtd->hw_buf[3]), + hc32_to_cpup(fusbh200, &qtd->hw_buf[4])); +} + +static void __maybe_unused +dbg_qh (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + struct fusbh200_qh_hw *hw = qh->hw; + + fusbh200_dbg (fusbh200, "%s qh %p n%08x info %x %x qtd %x\n", label, + qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current); + dbg_qtd("overlay", fusbh200, (struct fusbh200_qtd *) &hw->hw_qtd_next); +} + +static void __maybe_unused +dbg_itd (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_itd *itd) +{ + fusbh200_dbg (fusbh200, "%s [%d] itd %p, next %08x, urb %p\n", + label, itd->frame, itd, hc32_to_cpu(fusbh200, itd->hw_next), + itd->urb); + fusbh200_dbg (fusbh200, + " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n", + hc32_to_cpu(fusbh200, itd->hw_transaction[0]), + hc32_to_cpu(fusbh200, itd->hw_transaction[1]), + hc32_to_cpu(fusbh200, itd->hw_transaction[2]), + hc32_to_cpu(fusbh200, itd->hw_transaction[3]), + hc32_to_cpu(fusbh200, itd->hw_transaction[4]), + hc32_to_cpu(fusbh200, itd->hw_transaction[5]), + hc32_to_cpu(fusbh200, itd->hw_transaction[6]), + hc32_to_cpu(fusbh200, itd->hw_transaction[7])); + fusbh200_dbg (fusbh200, + " buf: %08x %08x %08x %08x %08x %08x %08x\n", + hc32_to_cpu(fusbh200, itd->hw_bufp[0]), + hc32_to_cpu(fusbh200, itd->hw_bufp[1]), + hc32_to_cpu(fusbh200, itd->hw_bufp[2]), + hc32_to_cpu(fusbh200, itd->hw_bufp[3]), + hc32_to_cpu(fusbh200, itd->hw_bufp[4]), + hc32_to_cpu(fusbh200, itd->hw_bufp[5]), + hc32_to_cpu(fusbh200, itd->hw_bufp[6])); + fusbh200_dbg (fusbh200, " index: %d %d %d %d %d %d %d %d\n", + itd->index[0], itd->index[1], itd->index[2], + itd->index[3], itd->index[4], itd->index[5], + itd->index[6], itd->index[7]); +} + +static int __maybe_unused +dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) +{ + return scnprintf (buf, len, + "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s", + label, label [0] ? " " : "", status, + (status & STS_ASS) ? " Async" : "", + (status & STS_PSS) ? " Periodic" : "", + (status & STS_RECL) ? " Recl" : "", + (status & STS_HALT) ? " Halt" : "", + (status & STS_IAA) ? " IAA" : "", + (status & STS_FATAL) ? " FATAL" : "", + (status & STS_FLR) ? " FLR" : "", + (status & STS_PCD) ? " PCD" : "", + (status & STS_ERR) ? " ERR" : "", + (status & STS_INT) ? " INT" : "" + ); +} + +static int __maybe_unused +dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable) +{ + return scnprintf (buf, len, + "%s%sintrenable %02x%s%s%s%s%s%s", + label, label [0] ? " " : "", enable, + (enable & STS_IAA) ? " IAA" : "", + (enable & STS_FATAL) ? " FATAL" : "", + (enable & STS_FLR) ? " FLR" : "", + (enable & STS_PCD) ? " PCD" : "", + (enable & STS_ERR) ? " ERR" : "", + (enable & STS_INT) ? " INT" : "" + ); +} + +static const char *const fls_strings [] = + { "1024", "512", "256", "??" }; + +static int +dbg_command_buf (char *buf, unsigned len, const char *label, u32 command) +{ + return scnprintf (buf, len, + "%s%scommand %07x %s=%d ithresh=%d%s%s%s " + "period=%s%s %s", + label, label [0] ? " " : "", command, + (command & CMD_PARK) ? " park" : "(park)", + CMD_PARK_CNT (command), + (command >> 16) & 0x3f, + (command & CMD_IAAD) ? " IAAD" : "", + (command & CMD_ASE) ? " Async" : "", + (command & CMD_PSE) ? " Periodic" : "", + fls_strings [(command >> 2) & 0x3], + (command & CMD_RESET) ? " Reset" : "", + (command & CMD_RUN) ? "RUN" : "HALT" + ); +} + +static int +dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) +{ + char *sig; + + /* signaling state */ + switch (status & (3 << 10)) { + case 0 << 10: sig = "se0"; break; + case 1 << 10: sig = "k"; break; /* low speed */ + case 2 << 10: sig = "j"; break; + default: sig = "?"; break; + } + + return scnprintf (buf, len, + "%s%sport:%d status %06x %d " + "sig=%s%s%s%s%s%s%s%s", + label, label [0] ? " " : "", port, status, + status>>25,/*device address */ + sig, + (status & PORT_RESET) ? " RESET" : "", + (status & PORT_SUSPEND) ? " SUSPEND" : "", + (status & PORT_RESUME) ? " RESUME" : "", + (status & PORT_PEC) ? " PEC" : "", + (status & PORT_PE) ? " PE" : "", + (status & PORT_CSC) ? " CSC" : "", + (status & PORT_CONNECT) ? " CONNECT" : ""); +} + +#else +static inline void __maybe_unused +dbg_qh (char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{} + +static inline int __maybe_unused +dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) +{ return 0; } + +static inline int __maybe_unused +dbg_command_buf (char *buf, unsigned len, const char *label, u32 command) +{ return 0; } + +static inline int __maybe_unused +dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable) +{ return 0; } + +static inline int __maybe_unused +dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) +{ return 0; } + +#endif /* DEBUG */ + +/* functions have the "wrong" filename when they're output... */ +#define dbg_status(fusbh200, label, status) { \ + char _buf [80]; \ + dbg_status_buf (_buf, sizeof _buf, label, status); \ + fusbh200_dbg (fusbh200, "%s\n", _buf); \ +} + +#define dbg_cmd(fusbh200, label, command) { \ + char _buf [80]; \ + dbg_command_buf (_buf, sizeof _buf, label, command); \ + fusbh200_dbg (fusbh200, "%s\n", _buf); \ +} + +#define dbg_port(fusbh200, label, port, status) { \ + char _buf [80]; \ + dbg_port_buf (_buf, sizeof _buf, label, port, status); \ + fusbh200_dbg (fusbh200, "%s\n", _buf); \ +} + +/*-------------------------------------------------------------------------*/ + +#ifdef STUB_DEBUG_FILES + +static inline void create_debug_files (struct fusbh200_hcd *bus) { } +static inline void remove_debug_files (struct fusbh200_hcd *bus) { } + +#else + +/* troubleshooting help: expose state in debugfs */ + +static int debug_async_open(struct inode *, struct file *); +static int debug_periodic_open(struct inode *, struct file *); +static int debug_registers_open(struct inode *, struct file *); +static int debug_async_open(struct inode *, struct file *); + +static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); +static int debug_close(struct inode *, struct file *); + +static const struct file_operations debug_async_fops = { + .owner = THIS_MODULE, + .open = debug_async_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; +static const struct file_operations debug_periodic_fops = { + .owner = THIS_MODULE, + .open = debug_periodic_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; +static const struct file_operations debug_registers_fops = { + .owner = THIS_MODULE, + .open = debug_registers_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; + +static struct dentry *fusbh200_debug_root; + +struct debug_buffer { + ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ + struct usb_bus *bus; + struct mutex mutex; /* protect filling of buffer */ + size_t count; /* number of characters filled into buffer */ + char *output_buf; + size_t alloc_size; +}; + +#define speed_char(info1) ({ char tmp; \ + switch (info1 & (3 << 12)) { \ + case QH_FULL_SPEED: tmp = 'f'; break; \ + case QH_LOW_SPEED: tmp = 'l'; break; \ + case QH_HIGH_SPEED: tmp = 'h'; break; \ + default: tmp = '?'; break; \ + }; tmp; }) + +static inline char token_mark(struct fusbh200_hcd *fusbh200, __hc32 token) +{ + __u32 v = hc32_to_cpu(fusbh200, token); + + if (v & QTD_STS_ACTIVE) + return '*'; + if (v & QTD_STS_HALT) + return '-'; + if (!IS_SHORT_READ (v)) + return ' '; + /* tries to advance through hw_alt_next */ + return '/'; +} + +static void qh_lines ( + struct fusbh200_hcd *fusbh200, + struct fusbh200_qh *qh, + char **nextp, + unsigned *sizep +) +{ + u32 scratch; + u32 hw_curr; + struct fusbh200_qtd *td; + unsigned temp; + unsigned size = *sizep; + char *next = *nextp; + char mark; + __le32 list_end = FUSBH200_LIST_END(fusbh200); + struct fusbh200_qh_hw *hw = qh->hw; + + if (hw->hw_qtd_next == list_end) /* NEC does this */ + mark = '@'; + else + mark = token_mark(fusbh200, hw->hw_token); + if (mark == '/') { /* qh_alt_next controls qh advance? */ + if ((hw->hw_alt_next & QTD_MASK(fusbh200)) + == fusbh200->async->hw->hw_alt_next) + mark = '#'; /* blocked */ + else if (hw->hw_alt_next == list_end) + mark = '.'; /* use hw_qtd_next */ + /* else alt_next points to some other qtd */ + } + scratch = hc32_to_cpup(fusbh200, &hw->hw_info1); + hw_curr = (mark == '*') ? hc32_to_cpup(fusbh200, &hw->hw_current) : 0; + temp = scnprintf (next, size, + "qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)", + qh, scratch & 0x007f, + speed_char (scratch), + (scratch >> 8) & 0x000f, + scratch, hc32_to_cpup(fusbh200, &hw->hw_info2), + hc32_to_cpup(fusbh200, &hw->hw_token), mark, + (cpu_to_hc32(fusbh200, QTD_TOGGLE) & hw->hw_token) + ? "data1" : "data0", + (hc32_to_cpup(fusbh200, &hw->hw_alt_next) >> 1) & 0x0f); + size -= temp; + next += temp; + + /* hc may be modifying the list as we read it ... */ + list_for_each_entry(td, &qh->qtd_list, qtd_list) { + scratch = hc32_to_cpup(fusbh200, &td->hw_token); + mark = ' '; + if (hw_curr == td->qtd_dma) + mark = '*'; + else if (hw->hw_qtd_next == cpu_to_hc32(fusbh200, td->qtd_dma)) + mark = '+'; + else if (QTD_LENGTH (scratch)) { + if (td->hw_alt_next == fusbh200->async->hw->hw_alt_next) + mark = '#'; + else if (td->hw_alt_next != list_end) + mark = '/'; + } + temp = snprintf (next, size, + "\n\t%p%c%s len=%d %08x urb %p", + td, mark, ({ char *tmp; + switch ((scratch>>8)&0x03) { + case 0: tmp = "out"; break; + case 1: tmp = "in"; break; + case 2: tmp = "setup"; break; + default: tmp = "?"; break; + } tmp;}), + (scratch >> 16) & 0x7fff, + scratch, + td->urb); + if (size < temp) + temp = size; + size -= temp; + next += temp; + if (temp == size) + goto done; + } + + temp = snprintf (next, size, "\n"); + if (size < temp) + temp = size; + size -= temp; + next += temp; + +done: + *sizep = size; + *nextp = next; +} + +static ssize_t fill_async_buffer(struct debug_buffer *buf) +{ + struct usb_hcd *hcd; + struct fusbh200_hcd *fusbh200; + unsigned long flags; + unsigned temp, size; + char *next; + struct fusbh200_qh *qh; + + hcd = bus_to_hcd(buf->bus); + fusbh200 = hcd_to_fusbh200 (hcd); + next = buf->output_buf; + size = buf->alloc_size; + + *next = 0; + + /* dumps a snapshot of the async schedule. + * usually empty except for long-term bulk reads, or head. + * one QH per line, and TDs we know about + */ + spin_lock_irqsave (&fusbh200->lock, flags); + for (qh = fusbh200->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh) + qh_lines (fusbh200, qh, &next, &size); + if (fusbh200->async_unlink && size > 0) { + temp = scnprintf(next, size, "\nunlink =\n"); + size -= temp; + next += temp; + + for (qh = fusbh200->async_unlink; size > 0 && qh; + qh = qh->unlink_next) + qh_lines (fusbh200, qh, &next, &size); + } + spin_unlock_irqrestore (&fusbh200->lock, flags); + + return strlen(buf->output_buf); +} + +#define DBG_SCHED_LIMIT 64 +static ssize_t fill_periodic_buffer(struct debug_buffer *buf) +{ + struct usb_hcd *hcd; + struct fusbh200_hcd *fusbh200; + unsigned long flags; + union fusbh200_shadow p, *seen; + unsigned temp, size, seen_count; + char *next; + unsigned i; + __hc32 tag; + + if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC))) + return 0; + seen_count = 0; + + hcd = bus_to_hcd(buf->bus); + fusbh200 = hcd_to_fusbh200 (hcd); + next = buf->output_buf; + size = buf->alloc_size; + + temp = scnprintf (next, size, "size = %d\n", fusbh200->periodic_size); + size -= temp; + next += temp; + + /* dump a snapshot of the periodic schedule. + * iso changes, interrupt usually doesn't. + */ + spin_lock_irqsave (&fusbh200->lock, flags); + for (i = 0; i < fusbh200->periodic_size; i++) { + p = fusbh200->pshadow [i]; + if (likely (!p.ptr)) + continue; + tag = Q_NEXT_TYPE(fusbh200, fusbh200->periodic [i]); + + temp = scnprintf (next, size, "%4d: ", i); + size -= temp; + next += temp; + + do { + struct fusbh200_qh_hw *hw; + + switch (hc32_to_cpu(fusbh200, tag)) { + case Q_TYPE_QH: + hw = p.qh->hw; + temp = scnprintf (next, size, " qh%d-%04x/%p", + p.qh->period, + hc32_to_cpup(fusbh200, + &hw->hw_info2) + /* uframe masks */ + & (QH_CMASK | QH_SMASK), + p.qh); + size -= temp; + next += temp; + /* don't repeat what follows this qh */ + for (temp = 0; temp < seen_count; temp++) { + if (seen [temp].ptr != p.ptr) + continue; + if (p.qh->qh_next.ptr) { + temp = scnprintf (next, size, + " ..."); + size -= temp; + next += temp; + } + break; + } + /* show more info the first time around */ + if (temp == seen_count) { + u32 scratch = hc32_to_cpup(fusbh200, + &hw->hw_info1); + struct fusbh200_qtd *qtd; + char *type = ""; + + /* count tds, get ep direction */ + temp = 0; + list_for_each_entry (qtd, + &p.qh->qtd_list, + qtd_list) { + temp++; + switch (0x03 & (hc32_to_cpu( + fusbh200, + qtd->hw_token) >> 8)) { + case 0: type = "out"; continue; + case 1: type = "in"; continue; + } + } + + temp = scnprintf (next, size, + " (%c%d ep%d%s " + "[%d/%d] q%d p%d)", + speed_char (scratch), + scratch & 0x007f, + (scratch >> 8) & 0x000f, type, + p.qh->usecs, p.qh->c_usecs, + temp, + 0x7ff & (scratch >> 16)); + + if (seen_count < DBG_SCHED_LIMIT) + seen [seen_count++].qh = p.qh; + } else + temp = 0; + tag = Q_NEXT_TYPE(fusbh200, hw->hw_next); + p = p.qh->qh_next; + break; + case Q_TYPE_FSTN: + temp = scnprintf (next, size, + " fstn-%8x/%p", p.fstn->hw_prev, + p.fstn); + tag = Q_NEXT_TYPE(fusbh200, p.fstn->hw_next); + p = p.fstn->fstn_next; + break; + case Q_TYPE_ITD: + temp = scnprintf (next, size, + " itd/%p", p.itd); + tag = Q_NEXT_TYPE(fusbh200, p.itd->hw_next); + p = p.itd->itd_next; + break; + } + size -= temp; + next += temp; + } while (p.ptr); + + temp = scnprintf (next, size, "\n"); + size -= temp; + next += temp; + } + spin_unlock_irqrestore (&fusbh200->lock, flags); + kfree (seen); + + return buf->alloc_size - size; +} +#undef DBG_SCHED_LIMIT + +static const char *rh_state_string(struct fusbh200_hcd *fusbh200) +{ + switch (fusbh200->rh_state) { + case FUSBH200_RH_HALTED: + return "halted"; + case FUSBH200_RH_SUSPENDED: + return "suspended"; + case FUSBH200_RH_RUNNING: + return "running"; + case FUSBH200_RH_STOPPING: + return "stopping"; + } + return "?"; +} + +static ssize_t fill_registers_buffer(struct debug_buffer *buf) +{ + struct usb_hcd *hcd; + struct fusbh200_hcd *fusbh200; + unsigned long flags; + unsigned temp, size, i; + char *next, scratch [80]; + static char fmt [] = "%*s\n"; + static char label [] = ""; + + hcd = bus_to_hcd(buf->bus); + fusbh200 = hcd_to_fusbh200 (hcd); + next = buf->output_buf; + size = buf->alloc_size; + + spin_lock_irqsave (&fusbh200->lock, flags); + + if (!HCD_HW_ACCESSIBLE(hcd)) { + size = scnprintf (next, size, + "bus %s, device %s\n" + "%s\n" + "SUSPENDED (no register access)\n", + hcd->self.controller->bus->name, + dev_name(hcd->self.controller), + hcd->product_desc); + goto done; + } + + /* Capability Registers */ + i = HC_VERSION(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase)); + temp = scnprintf (next, size, + "bus %s, device %s\n" + "%s\n" + "EHCI %x.%02x, rh state %s\n", + hcd->self.controller->bus->name, + dev_name(hcd->self.controller), + hcd->product_desc, + i >> 8, i & 0x0ff, rh_state_string(fusbh200)); + size -= temp; + next += temp; + + // FIXME interpret both types of params + i = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params); + temp = scnprintf (next, size, "structural params 0x%08x\n", i); + size -= temp; + next += temp; + + i = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params); + temp = scnprintf (next, size, "capability params 0x%08x\n", i); + size -= temp; + next += temp; + + /* Operational Registers */ + temp = dbg_status_buf (scratch, sizeof scratch, label, + fusbh200_readl(fusbh200, &fusbh200->regs->status)); + temp = scnprintf (next, size, fmt, temp, scratch); + size -= temp; + next += temp; + + temp = dbg_command_buf (scratch, sizeof scratch, label, + fusbh200_readl(fusbh200, &fusbh200->regs->command)); + temp = scnprintf (next, size, fmt, temp, scratch); + size -= temp; + next += temp; + + temp = dbg_intr_buf (scratch, sizeof scratch, label, + fusbh200_readl(fusbh200, &fusbh200->regs->intr_enable)); + temp = scnprintf (next, size, fmt, temp, scratch); + size -= temp; + next += temp; + + temp = scnprintf (next, size, "uframe %04x\n", + fusbh200_read_frame_index(fusbh200)); + size -= temp; + next += temp; + + if (fusbh200->async_unlink) { + temp = scnprintf(next, size, "async unlink qh %p\n", + fusbh200->async_unlink); + size -= temp; + next += temp; + } + +#ifdef FUSBH200_STATS + temp = scnprintf (next, size, + "irq normal %ld err %ld iaa %ld (lost %ld)\n", + fusbh200->stats.normal, fusbh200->stats.error, fusbh200->stats.iaa, + fusbh200->stats.lost_iaa); + size -= temp; + next += temp; + + temp = scnprintf (next, size, "complete %ld unlink %ld\n", + fusbh200->stats.complete, fusbh200->stats.unlink); + size -= temp; + next += temp; +#endif + +done: + spin_unlock_irqrestore (&fusbh200->lock, flags); + + return buf->alloc_size - size; +} + +static struct debug_buffer *alloc_buffer(struct usb_bus *bus, + ssize_t (*fill_func)(struct debug_buffer *)) +{ + struct debug_buffer *buf; + + buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL); + + if (buf) { + buf->bus = bus; + buf->fill_func = fill_func; + mutex_init(&buf->mutex); + buf->alloc_size = PAGE_SIZE; + } + + return buf; +} + +static int fill_buffer(struct debug_buffer *buf) +{ + int ret = 0; + + if (!buf->output_buf) + buf->output_buf = vmalloc(buf->alloc_size); + + if (!buf->output_buf) { + ret = -ENOMEM; + goto out; + } + + ret = buf->fill_func(buf); + + if (ret >= 0) { + buf->count = ret; + ret = 0; + } + +out: + return ret; +} + +static ssize_t debug_output(struct file *file, char __user *user_buf, + size_t len, loff_t *offset) +{ + struct debug_buffer *buf = file->private_data; + int ret = 0; + + mutex_lock(&buf->mutex); + if (buf->count == 0) { + ret = fill_buffer(buf); + if (ret != 0) { + mutex_unlock(&buf->mutex); + goto out; + } + } + mutex_unlock(&buf->mutex); + + ret = simple_read_from_buffer(user_buf, len, offset, + buf->output_buf, buf->count); + +out: + return ret; + +} + +static int debug_close(struct inode *inode, struct file *file) +{ + struct debug_buffer *buf = file->private_data; + + if (buf) { + vfree(buf->output_buf); + kfree(buf); + } + + return 0; +} +static int debug_async_open(struct inode *inode, struct file *file) +{ + file->private_data = alloc_buffer(inode->i_private, fill_async_buffer); + + return file->private_data ? 0 : -ENOMEM; +} + +static int debug_periodic_open(struct inode *inode, struct file *file) +{ + struct debug_buffer *buf; + buf = alloc_buffer(inode->i_private, fill_periodic_buffer); + if (!buf) + return -ENOMEM; + + buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8)*PAGE_SIZE; + file->private_data = buf; + return 0; +} + +static int debug_registers_open(struct inode *inode, struct file *file) +{ + file->private_data = alloc_buffer(inode->i_private, + fill_registers_buffer); + + return file->private_data ? 0 : -ENOMEM; +} + +static inline void create_debug_files (struct fusbh200_hcd *fusbh200) +{ + struct usb_bus *bus = &fusbh200_to_hcd(fusbh200)->self; + + fusbh200->debug_dir = debugfs_create_dir(bus->bus_name, fusbh200_debug_root); + if (!fusbh200->debug_dir) + return; + + if (!debugfs_create_file("async", S_IRUGO, fusbh200->debug_dir, bus, + &debug_async_fops)) + goto file_error; + + if (!debugfs_create_file("periodic", S_IRUGO, fusbh200->debug_dir, bus, + &debug_periodic_fops)) + goto file_error; + + if (!debugfs_create_file("registers", S_IRUGO, fusbh200->debug_dir, bus, + &debug_registers_fops)) + goto file_error; + + return; + +file_error: + debugfs_remove_recursive(fusbh200->debug_dir); +} + +static inline void remove_debug_files (struct fusbh200_hcd *fusbh200) +{ + debugfs_remove_recursive(fusbh200->debug_dir); +} + +#endif /* STUB_DEBUG_FILES */ +/*-------------------------------------------------------------------------*/ + +/* + * handshake - spin reading hc until handshake completes or fails + * @ptr: address of hc register to be read + * @mask: bits to look at in result of read + * @done: value of those bits when handshake succeeds + * @usec: timeout in microseconds + * + * Returns negative errno, or zero on success + * + * Success happens when the "mask" bits have the specified value (hardware + * handshake done). There are two failure modes: "usec" have passed (major + * hardware flakeout), or the register reads as all-ones (hardware removed). + * + * That last failure should_only happen in cases like physical cardbus eject + * before driver shutdown. But it also seems to be caused by bugs in cardbus + * bridge shutdown: shutting down the bridge before the devices using it. + */ +static int handshake (struct fusbh200_hcd *fusbh200, void __iomem *ptr, + u32 mask, u32 done, int usec) +{ + u32 result; + + do { + result = fusbh200_readl(fusbh200, ptr); + if (result == ~(u32)0) /* card removed */ + return -ENODEV; + result &= mask; + if (result == done) + return 0; + udelay (1); + usec--; + } while (usec > 0); + return -ETIMEDOUT; +} + +/* + * Force HC to halt state from unknown (EHCI spec section 2.3). + * Must be called with interrupts enabled and the lock not held. + */ +static int fusbh200_halt (struct fusbh200_hcd *fusbh200) +{ + u32 temp; + + spin_lock_irq(&fusbh200->lock); + + /* disable any irqs left enabled by previous code */ + fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable); + + /* + * This routine gets called during probe before fusbh200->command + * has been initialized, so we can't rely on its value. + */ + fusbh200->command &= ~CMD_RUN; + temp = fusbh200_readl(fusbh200, &fusbh200->regs->command); + temp &= ~(CMD_RUN | CMD_IAAD); + fusbh200_writel(fusbh200, temp, &fusbh200->regs->command); + + spin_unlock_irq(&fusbh200->lock); + synchronize_irq(fusbh200_to_hcd(fusbh200)->irq); + + return handshake(fusbh200, &fusbh200->regs->status, + STS_HALT, STS_HALT, 16 * 125); +} + +/* + * Reset a non-running (STS_HALT == 1) controller. + * Must be called with interrupts enabled and the lock not held. + */ +static int fusbh200_reset (struct fusbh200_hcd *fusbh200) +{ + int retval; + u32 command = fusbh200_readl(fusbh200, &fusbh200->regs->command); + + /* If the EHCI debug controller is active, special care must be + * taken before and after a host controller reset */ + if (fusbh200->debug && !dbgp_reset_prep(fusbh200_to_hcd(fusbh200))) + fusbh200->debug = NULL; + + command |= CMD_RESET; + dbg_cmd (fusbh200, "reset", command); + fusbh200_writel(fusbh200, command, &fusbh200->regs->command); + fusbh200->rh_state = FUSBH200_RH_HALTED; + fusbh200->next_statechange = jiffies; + retval = handshake (fusbh200, &fusbh200->regs->command, + CMD_RESET, 0, 250 * 1000); + + if (retval) + return retval; + + if (fusbh200->debug) + dbgp_external_startup(fusbh200_to_hcd(fusbh200)); + + fusbh200->port_c_suspend = fusbh200->suspended_ports = + fusbh200->resuming_ports = 0; + return retval; +} + +/* + * Idle the controller (turn off the schedules). + * Must be called with interrupts enabled and the lock not held. + */ +static void fusbh200_quiesce (struct fusbh200_hcd *fusbh200) +{ + u32 temp; + + if (fusbh200->rh_state != FUSBH200_RH_RUNNING) + return; + + /* wait for any schedule enables/disables to take effect */ + temp = (fusbh200->command << 10) & (STS_ASS | STS_PSS); + handshake(fusbh200, &fusbh200->regs->status, STS_ASS | STS_PSS, temp, 16 * 125); + + /* then disable anything that's still active */ + spin_lock_irq(&fusbh200->lock); + fusbh200->command &= ~(CMD_ASE | CMD_PSE); + fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command); + spin_unlock_irq(&fusbh200->lock); + + /* hardware can take 16 microframes to turn off ... */ + handshake(fusbh200, &fusbh200->regs->status, STS_ASS | STS_PSS, 0, 16 * 125); +} + +/*-------------------------------------------------------------------------*/ + +static void end_unlink_async(struct fusbh200_hcd *fusbh200); +static void unlink_empty_async(struct fusbh200_hcd *fusbh200); +static void fusbh200_work(struct fusbh200_hcd *fusbh200); +static void start_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh); +static void end_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh); + +/*-------------------------------------------------------------------------*/ + +/* Set a bit in the USBCMD register */ +static void fusbh200_set_command_bit(struct fusbh200_hcd *fusbh200, u32 bit) +{ + fusbh200->command |= bit; + fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command); + + /* unblock posted write */ + fusbh200_readl(fusbh200, &fusbh200->regs->command); +} + +/* Clear a bit in the USBCMD register */ +static void fusbh200_clear_command_bit(struct fusbh200_hcd *fusbh200, u32 bit) +{ + fusbh200->command &= ~bit; + fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command); + + /* unblock posted write */ + fusbh200_readl(fusbh200, &fusbh200->regs->command); +} + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI timer support... Now using hrtimers. + * + * Lots of different events are triggered from fusbh200->hrtimer. Whenever + * the timer routine runs, it checks each possible event; events that are + * currently enabled and whose expiration time has passed get handled. + * The set of enabled events is stored as a collection of bitflags in + * fusbh200->enabled_hrtimer_events, and they are numbered in order of + * increasing delay values (ranging between 1 ms and 100 ms). + * + * Rather than implementing a sorted list or tree of all pending events, + * we keep track only of the lowest-numbered pending event, in + * fusbh200->next_hrtimer_event. Whenever fusbh200->hrtimer gets restarted, its + * expiration time is set to the timeout value for this event. + * + * As a result, events might not get handled right away; the actual delay + * could be anywhere up to twice the requested delay. This doesn't + * matter, because none of the events are especially time-critical. The + * ones that matter most all have a delay of 1 ms, so they will be + * handled after 2 ms at most, which is okay. In addition to this, we + * allow for an expiration range of 1 ms. + */ + +/* + * Delay lengths for the hrtimer event types. + * Keep this list sorted by delay length, in the same order as + * the event types indexed by enum fusbh200_hrtimer_event in fusbh200.h. + */ +static unsigned event_delays_ns[] = { + 1 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_POLL_ASS */ + 1 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_POLL_PSS */ + 1 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_POLL_DEAD */ + 1125 * NSEC_PER_USEC, /* FUSBH200_HRTIMER_UNLINK_INTR */ + 2 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_FREE_ITDS */ + 6 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_ASYNC_UNLINKS */ + 10 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_IAA_WATCHDOG */ + 10 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_DISABLE_PERIODIC */ + 15 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_DISABLE_ASYNC */ + 100 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_IO_WATCHDOG */ +}; + +/* Enable a pending hrtimer event */ +static void fusbh200_enable_event(struct fusbh200_hcd *fusbh200, unsigned event, + bool resched) +{ + ktime_t *timeout = &fusbh200->hr_timeouts[event]; + + if (resched) + *timeout = ktime_add(ktime_get(), + ktime_set(0, event_delays_ns[event])); + fusbh200->enabled_hrtimer_events |= (1 << event); + + /* Track only the lowest-numbered pending event */ + if (event < fusbh200->next_hrtimer_event) { + fusbh200->next_hrtimer_event = event; + hrtimer_start_range_ns(&fusbh200->hrtimer, *timeout, + NSEC_PER_MSEC, HRTIMER_MODE_ABS); + } +} + + +/* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */ +static void fusbh200_poll_ASS(struct fusbh200_hcd *fusbh200) +{ + unsigned actual, want; + + /* Don't enable anything if the controller isn't running (e.g., died) */ + if (fusbh200->rh_state != FUSBH200_RH_RUNNING) + return; + + want = (fusbh200->command & CMD_ASE) ? STS_ASS : 0; + actual = fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_ASS; + + if (want != actual) { + + /* Poll again later, but give up after about 20 ms */ + if (fusbh200->ASS_poll_count++ < 20) { + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_ASS, true); + return; + } + fusbh200_dbg(fusbh200, "Waited too long for the async schedule status (%x/%x), giving up\n", + want, actual); + } + fusbh200->ASS_poll_count = 0; + + /* The status is up-to-date; restart or stop the schedule as needed */ + if (want == 0) { /* Stopped */ + if (fusbh200->async_count > 0) + fusbh200_set_command_bit(fusbh200, CMD_ASE); + + } else { /* Running */ + if (fusbh200->async_count == 0) { + + /* Turn off the schedule after a while */ + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_DISABLE_ASYNC, + true); + } + } +} + +/* Turn off the async schedule after a brief delay */ +static void fusbh200_disable_ASE(struct fusbh200_hcd *fusbh200) +{ + fusbh200_clear_command_bit(fusbh200, CMD_ASE); +} + + +/* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */ +static void fusbh200_poll_PSS(struct fusbh200_hcd *fusbh200) +{ + unsigned actual, want; + + /* Don't do anything if the controller isn't running (e.g., died) */ + if (fusbh200->rh_state != FUSBH200_RH_RUNNING) + return; + + want = (fusbh200->command & CMD_PSE) ? STS_PSS : 0; + actual = fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_PSS; + + if (want != actual) { + + /* Poll again later, but give up after about 20 ms */ + if (fusbh200->PSS_poll_count++ < 20) { + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_PSS, true); + return; + } + fusbh200_dbg(fusbh200, "Waited too long for the periodic schedule status (%x/%x), giving up\n", + want, actual); + } + fusbh200->PSS_poll_count = 0; + + /* The status is up-to-date; restart or stop the schedule as needed */ + if (want == 0) { /* Stopped */ + if (fusbh200->periodic_count > 0) + fusbh200_set_command_bit(fusbh200, CMD_PSE); + + } else { /* Running */ + if (fusbh200->periodic_count == 0) { + + /* Turn off the schedule after a while */ + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_DISABLE_PERIODIC, + true); + } + } +} + +/* Turn off the periodic schedule after a brief delay */ +static void fusbh200_disable_PSE(struct fusbh200_hcd *fusbh200) +{ + fusbh200_clear_command_bit(fusbh200, CMD_PSE); +} + + +/* Poll the STS_HALT status bit; see when a dead controller stops */ +static void fusbh200_handle_controller_death(struct fusbh200_hcd *fusbh200) +{ + if (!(fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_HALT)) { + + /* Give up after a few milliseconds */ + if (fusbh200->died_poll_count++ < 5) { + /* Try again later */ + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_DEAD, true); + return; + } + fusbh200_warn(fusbh200, "Waited too long for the controller to stop, giving up\n"); + } + + /* Clean up the mess */ + fusbh200->rh_state = FUSBH200_RH_HALTED; + fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable); + fusbh200_work(fusbh200); + end_unlink_async(fusbh200); + + /* Not in process context, so don't try to reset the controller */ +} + + +/* Handle unlinked interrupt QHs once they are gone from the hardware */ +static void fusbh200_handle_intr_unlinks(struct fusbh200_hcd *fusbh200) +{ + bool stopped = (fusbh200->rh_state < FUSBH200_RH_RUNNING); + + /* + * Process all the QHs on the intr_unlink list that were added + * before the current unlink cycle began. The list is in + * temporal order, so stop when we reach the first entry in the + * current cycle. But if the root hub isn't running then + * process all the QHs on the list. + */ + fusbh200->intr_unlinking = true; + while (fusbh200->intr_unlink) { + struct fusbh200_qh *qh = fusbh200->intr_unlink; + + if (!stopped && qh->unlink_cycle == fusbh200->intr_unlink_cycle) + break; + fusbh200->intr_unlink = qh->unlink_next; + qh->unlink_next = NULL; + end_unlink_intr(fusbh200, qh); + } + + /* Handle remaining entries later */ + if (fusbh200->intr_unlink) { + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_UNLINK_INTR, true); + ++fusbh200->intr_unlink_cycle; + } + fusbh200->intr_unlinking = false; +} + + +/* Start another free-iTDs/siTDs cycle */ +static void start_free_itds(struct fusbh200_hcd *fusbh200) +{ + if (!(fusbh200->enabled_hrtimer_events & BIT(FUSBH200_HRTIMER_FREE_ITDS))) { + fusbh200->last_itd_to_free = list_entry( + fusbh200->cached_itd_list.prev, + struct fusbh200_itd, itd_list); + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_FREE_ITDS, true); + } +} + +/* Wait for controller to stop using old iTDs and siTDs */ +static void end_free_itds(struct fusbh200_hcd *fusbh200) +{ + struct fusbh200_itd *itd, *n; + + if (fusbh200->rh_state < FUSBH200_RH_RUNNING) { + fusbh200->last_itd_to_free = NULL; + } + + list_for_each_entry_safe(itd, n, &fusbh200->cached_itd_list, itd_list) { + list_del(&itd->itd_list); + dma_pool_free(fusbh200->itd_pool, itd, itd->itd_dma); + if (itd == fusbh200->last_itd_to_free) + break; + } + + if (!list_empty(&fusbh200->cached_itd_list)) + start_free_itds(fusbh200); +} + + +/* Handle lost (or very late) IAA interrupts */ +static void fusbh200_iaa_watchdog(struct fusbh200_hcd *fusbh200) +{ + if (fusbh200->rh_state != FUSBH200_RH_RUNNING) + return; + + /* + * Lost IAA irqs wedge things badly; seen first with a vt8235. + * So we need this watchdog, but must protect it against both + * (a) SMP races against real IAA firing and retriggering, and + * (b) clean HC shutdown, when IAA watchdog was pending. + */ + if (fusbh200->async_iaa) { + u32 cmd, status; + + /* If we get here, IAA is *REALLY* late. It's barely + * conceivable that the system is so busy that CMD_IAAD + * is still legitimately set, so let's be sure it's + * clear before we read STS_IAA. (The HC should clear + * CMD_IAAD when it sets STS_IAA.) + */ + cmd = fusbh200_readl(fusbh200, &fusbh200->regs->command); + + /* + * If IAA is set here it either legitimately triggered + * after the watchdog timer expired (_way_ late, so we'll + * still count it as lost) ... or a silicon erratum: + * - VIA seems to set IAA without triggering the IRQ; + * - IAAD potentially cleared without setting IAA. + */ + status = fusbh200_readl(fusbh200, &fusbh200->regs->status); + if ((status & STS_IAA) || !(cmd & CMD_IAAD)) { + COUNT(fusbh200->stats.lost_iaa); + fusbh200_writel(fusbh200, STS_IAA, &fusbh200->regs->status); + } + + fusbh200_vdbg(fusbh200, "IAA watchdog: status %x cmd %x\n", + status, cmd); + end_unlink_async(fusbh200); + } +} + + +/* Enable the I/O watchdog, if appropriate */ +static void turn_on_io_watchdog(struct fusbh200_hcd *fusbh200) +{ + /* Not needed if the controller isn't running or it's already enabled */ + if (fusbh200->rh_state != FUSBH200_RH_RUNNING || + (fusbh200->enabled_hrtimer_events & + BIT(FUSBH200_HRTIMER_IO_WATCHDOG))) + return; + + /* + * Isochronous transfers always need the watchdog. + * For other sorts we use it only if the flag is set. + */ + if (fusbh200->isoc_count > 0 || (fusbh200->need_io_watchdog && + fusbh200->async_count + fusbh200->intr_count > 0)) + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_IO_WATCHDOG, true); +} + + +/* + * Handler functions for the hrtimer event types. + * Keep this array in the same order as the event types indexed by + * enum fusbh200_hrtimer_event in fusbh200.h. + */ +static void (*event_handlers[])(struct fusbh200_hcd *) = { + fusbh200_poll_ASS, /* FUSBH200_HRTIMER_POLL_ASS */ + fusbh200_poll_PSS, /* FUSBH200_HRTIMER_POLL_PSS */ + fusbh200_handle_controller_death, /* FUSBH200_HRTIMER_POLL_DEAD */ + fusbh200_handle_intr_unlinks, /* FUSBH200_HRTIMER_UNLINK_INTR */ + end_free_itds, /* FUSBH200_HRTIMER_FREE_ITDS */ + unlink_empty_async, /* FUSBH200_HRTIMER_ASYNC_UNLINKS */ + fusbh200_iaa_watchdog, /* FUSBH200_HRTIMER_IAA_WATCHDOG */ + fusbh200_disable_PSE, /* FUSBH200_HRTIMER_DISABLE_PERIODIC */ + fusbh200_disable_ASE, /* FUSBH200_HRTIMER_DISABLE_ASYNC */ + fusbh200_work, /* FUSBH200_HRTIMER_IO_WATCHDOG */ +}; + +static enum hrtimer_restart fusbh200_hrtimer_func(struct hrtimer *t) +{ + struct fusbh200_hcd *fusbh200 = container_of(t, struct fusbh200_hcd, hrtimer); + ktime_t now; + unsigned long events; + unsigned long flags; + unsigned e; + + spin_lock_irqsave(&fusbh200->lock, flags); + + events = fusbh200->enabled_hrtimer_events; + fusbh200->enabled_hrtimer_events = 0; + fusbh200->next_hrtimer_event = FUSBH200_HRTIMER_NO_EVENT; + + /* + * Check each pending event. If its time has expired, handle + * the event; otherwise re-enable it. + */ + now = ktime_get(); + for_each_set_bit(e, &events, FUSBH200_HRTIMER_NUM_EVENTS) { + if (now.tv64 >= fusbh200->hr_timeouts[e].tv64) + event_handlers[e](fusbh200); + else + fusbh200_enable_event(fusbh200, e, false); + } + + spin_unlock_irqrestore(&fusbh200->lock, flags); + return HRTIMER_NORESTART; +} + +/*-------------------------------------------------------------------------*/ + +#define fusbh200_bus_suspend NULL +#define fusbh200_bus_resume NULL + +/*-------------------------------------------------------------------------*/ + +static int check_reset_complete ( + struct fusbh200_hcd *fusbh200, + int index, + u32 __iomem *status_reg, + int port_status +) { + if (!(port_status & PORT_CONNECT)) + return port_status; + + /* if reset finished and it's still not enabled -- handoff */ + if (!(port_status & PORT_PE)) { + /* with integrated TT, there's nobody to hand it to! */ + fusbh200_dbg (fusbh200, + "Failed to enable port %d on root hub TT\n", + index+1); + return port_status; + } else { + fusbh200_dbg(fusbh200, "port %d reset complete, port enabled\n", + index + 1); + } + + return port_status; +} + +/*-------------------------------------------------------------------------*/ + + +/* build "status change" packet (one or two bytes) from HC registers */ + +static int +fusbh200_hub_status_data (struct usb_hcd *hcd, char *buf) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd); + u32 temp, status; + u32 mask; + int retval = 1; + unsigned long flags; + + /* init status to no-changes */ + buf [0] = 0; + + /* Inform the core about resumes-in-progress by returning + * a non-zero value even if there are no status changes. + */ + status = fusbh200->resuming_ports; + + mask = PORT_CSC | PORT_PEC; + // PORT_RESUME from hardware ~= PORT_STAT_C_SUSPEND + + /* no hub change reports (bit 0) for now (power, ...) */ + + /* port N changes (bit N)? */ + spin_lock_irqsave (&fusbh200->lock, flags); + + temp = fusbh200_readl(fusbh200, &fusbh200->regs->port_status); + + /* + * Return status information even for ports with OWNER set. + * Otherwise khubd wouldn't see the disconnect event when a + * high-speed device is switched over to the companion + * controller by the user. + */ + + if ((temp & mask) != 0 || test_bit(0, &fusbh200->port_c_suspend) + || (fusbh200->reset_done[0] && time_after_eq( + jiffies, fusbh200->reset_done[0]))) { + buf [0] |= 1 << 1; + status = STS_PCD; + } + /* FIXME autosuspend idle root hubs */ + spin_unlock_irqrestore (&fusbh200->lock, flags); + return status ? retval : 0; +} + +/*-------------------------------------------------------------------------*/ + +static void +fusbh200_hub_descriptor ( + struct fusbh200_hcd *fusbh200, + struct usb_hub_descriptor *desc +) { + int ports = HCS_N_PORTS (fusbh200->hcs_params); + u16 temp; + + desc->bDescriptorType = 0x29; + desc->bPwrOn2PwrGood = 10; /* fusbh200 1.0, 2.3.9 says 20ms max */ + desc->bHubContrCurrent = 0; + + desc->bNbrPorts = ports; + temp = 1 + (ports / 8); + desc->bDescLength = 7 + 2 * temp; + + /* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */ + memset(&desc->u.hs.DeviceRemovable[0], 0, temp); + memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp); + + temp = 0x0008; /* per-port overcurrent reporting */ + temp |= 0x0002; /* no power switching */ + desc->wHubCharacteristics = cpu_to_le16(temp); +} + +/*-------------------------------------------------------------------------*/ + +static int fusbh200_hub_control ( + struct usb_hcd *hcd, + u16 typeReq, + u16 wValue, + u16 wIndex, + char *buf, + u16 wLength +) { + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd); + int ports = HCS_N_PORTS (fusbh200->hcs_params); + u32 __iomem *status_reg = &fusbh200->regs->port_status; + u32 temp, temp1, status; + unsigned long flags; + int retval = 0; + unsigned selector; + + /* + * FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR. + * HCS_INDICATOR may say we can change LEDs to off/amber/green. + * (track current state ourselves) ... blink for diagnostics, + * power, "this is the one", etc. EHCI spec supports this. + */ + + spin_lock_irqsave (&fusbh200->lock, flags); + switch (typeReq) { + case ClearHubFeature: + switch (wValue) { + case C_HUB_LOCAL_POWER: + case C_HUB_OVER_CURRENT: + /* no hub-wide feature/status flags */ + break; + default: + goto error; + } + break; + case ClearPortFeature: + if (!wIndex || wIndex > ports) + goto error; + wIndex--; + temp = fusbh200_readl(fusbh200, status_reg); + temp &= ~PORT_RWC_BITS; + + /* + * Even if OWNER is set, so the port is owned by the + * companion controller, khubd needs to be able to clear + * the port-change status bits (especially + * USB_PORT_STAT_C_CONNECTION). + */ + + switch (wValue) { + case USB_PORT_FEAT_ENABLE: + fusbh200_writel(fusbh200, temp & ~PORT_PE, status_reg); + break; + case USB_PORT_FEAT_C_ENABLE: + fusbh200_writel(fusbh200, temp | PORT_PEC, status_reg); + break; + case USB_PORT_FEAT_SUSPEND: + if (temp & PORT_RESET) + goto error; + if (!(temp & PORT_SUSPEND)) + break; + if ((temp & PORT_PE) == 0) + goto error; + + /* resume signaling for 20 msec */ + fusbh200_writel(fusbh200, temp | PORT_RESUME, status_reg); + fusbh200->reset_done[wIndex] = jiffies + + msecs_to_jiffies(20); + break; + case USB_PORT_FEAT_C_SUSPEND: + clear_bit(wIndex, &fusbh200->port_c_suspend); + break; + case USB_PORT_FEAT_C_CONNECTION: + fusbh200_writel(fusbh200, temp | PORT_CSC, status_reg); + break; + case USB_PORT_FEAT_C_OVER_CURRENT: + fusbh200_writel(fusbh200, temp | BMISR_OVC, &fusbh200->regs->bmisr); + break; + case USB_PORT_FEAT_C_RESET: + /* GetPortStatus clears reset */ + break; + default: + goto error; + } + fusbh200_readl(fusbh200, &fusbh200->regs->command); /* unblock posted write */ + break; + case GetHubDescriptor: + fusbh200_hub_descriptor (fusbh200, (struct usb_hub_descriptor *) + buf); + break; + case GetHubStatus: + /* no hub-wide feature/status flags */ + memset (buf, 0, 4); + //cpu_to_le32s ((u32 *) buf); + break; + case GetPortStatus: + if (!wIndex || wIndex > ports) + goto error; + wIndex--; + status = 0; + temp = fusbh200_readl(fusbh200, status_reg); + + // wPortChange bits + if (temp & PORT_CSC) + status |= USB_PORT_STAT_C_CONNECTION << 16; + if (temp & PORT_PEC) + status |= USB_PORT_STAT_C_ENABLE << 16; + + temp1 = fusbh200_readl(fusbh200, &fusbh200->regs->bmisr); + if (temp1 & BMISR_OVC) + status |= USB_PORT_STAT_C_OVERCURRENT << 16; + + /* whoever resumes must GetPortStatus to complete it!! */ + if (temp & PORT_RESUME) { + + /* Remote Wakeup received? */ + if (!fusbh200->reset_done[wIndex]) { + /* resume signaling for 20 msec */ + fusbh200->reset_done[wIndex] = jiffies + + msecs_to_jiffies(20); + /* check the port again */ + mod_timer(&fusbh200_to_hcd(fusbh200)->rh_timer, + fusbh200->reset_done[wIndex]); + } + + /* resume completed? */ + else if (time_after_eq(jiffies, + fusbh200->reset_done[wIndex])) { + clear_bit(wIndex, &fusbh200->suspended_ports); + set_bit(wIndex, &fusbh200->port_c_suspend); + fusbh200->reset_done[wIndex] = 0; + + /* stop resume signaling */ + temp = fusbh200_readl(fusbh200, status_reg); + fusbh200_writel(fusbh200, + temp & ~(PORT_RWC_BITS | PORT_RESUME), + status_reg); + clear_bit(wIndex, &fusbh200->resuming_ports); + retval = handshake(fusbh200, status_reg, + PORT_RESUME, 0, 2000 /* 2msec */); + if (retval != 0) { + fusbh200_err(fusbh200, + "port %d resume error %d\n", + wIndex + 1, retval); + goto error; + } + temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10)); + } + } + + /* whoever resets must GetPortStatus to complete it!! */ + if ((temp & PORT_RESET) + && time_after_eq(jiffies, + fusbh200->reset_done[wIndex])) { + status |= USB_PORT_STAT_C_RESET << 16; + fusbh200->reset_done [wIndex] = 0; + clear_bit(wIndex, &fusbh200->resuming_ports); + + /* force reset to complete */ + fusbh200_writel(fusbh200, temp & ~(PORT_RWC_BITS | PORT_RESET), + status_reg); + /* REVISIT: some hardware needs 550+ usec to clear + * this bit; seems too long to spin routinely... + */ + retval = handshake(fusbh200, status_reg, + PORT_RESET, 0, 1000); + if (retval != 0) { + fusbh200_err (fusbh200, "port %d reset error %d\n", + wIndex + 1, retval); + goto error; + } + + /* see what we found out */ + temp = check_reset_complete (fusbh200, wIndex, status_reg, + fusbh200_readl(fusbh200, status_reg)); + } + + if (!(temp & (PORT_RESUME|PORT_RESET))) { + fusbh200->reset_done[wIndex] = 0; + clear_bit(wIndex, &fusbh200->resuming_ports); + } + + /* transfer dedicated ports to the companion hc */ + if ((temp & PORT_CONNECT) && + test_bit(wIndex, &fusbh200->companion_ports)) { + temp &= ~PORT_RWC_BITS; + fusbh200_writel(fusbh200, temp, status_reg); + fusbh200_dbg(fusbh200, "port %d --> companion\n", wIndex + 1); + temp = fusbh200_readl(fusbh200, status_reg); + } + + /* + * Even if OWNER is set, there's no harm letting khubd + * see the wPortStatus values (they should all be 0 except + * for PORT_POWER anyway). + */ + + if (temp & PORT_CONNECT) { + status |= USB_PORT_STAT_CONNECTION; + status |= fusbh200_port_speed(fusbh200, temp); + } + if (temp & PORT_PE) + status |= USB_PORT_STAT_ENABLE; + + /* maybe the port was unsuspended without our knowledge */ + if (temp & (PORT_SUSPEND|PORT_RESUME)) { + status |= USB_PORT_STAT_SUSPEND; + } else if (test_bit(wIndex, &fusbh200->suspended_ports)) { + clear_bit(wIndex, &fusbh200->suspended_ports); + clear_bit(wIndex, &fusbh200->resuming_ports); + fusbh200->reset_done[wIndex] = 0; + if (temp & PORT_PE) + set_bit(wIndex, &fusbh200->port_c_suspend); + } + + temp1 = fusbh200_readl(fusbh200, &fusbh200->regs->bmisr); + if (temp1 & BMISR_OVC) + status |= USB_PORT_STAT_OVERCURRENT; + if (temp & PORT_RESET) + status |= USB_PORT_STAT_RESET; + if (test_bit(wIndex, &fusbh200->port_c_suspend)) + status |= USB_PORT_STAT_C_SUSPEND << 16; + +#ifndef VERBOSE_DEBUG + if (status & ~0xffff) /* only if wPortChange is interesting */ +#endif + dbg_port (fusbh200, "GetStatus", wIndex + 1, temp); + put_unaligned_le32(status, buf); + break; + case SetHubFeature: + switch (wValue) { + case C_HUB_LOCAL_POWER: + case C_HUB_OVER_CURRENT: + /* no hub-wide feature/status flags */ + break; + default: + goto error; + } + break; + case SetPortFeature: + selector = wIndex >> 8; + wIndex &= 0xff; + + if (!wIndex || wIndex > ports) + goto error; + wIndex--; + temp = fusbh200_readl(fusbh200, status_reg); + temp &= ~PORT_RWC_BITS; + switch (wValue) { + case USB_PORT_FEAT_SUSPEND: + if ((temp & PORT_PE) == 0 + || (temp & PORT_RESET) != 0) + goto error; + + /* After above check the port must be connected. + * Set appropriate bit thus could put phy into low power + * mode if we have hostpc feature + */ + fusbh200_writel(fusbh200, temp | PORT_SUSPEND, status_reg); + set_bit(wIndex, &fusbh200->suspended_ports); + break; + case USB_PORT_FEAT_RESET: + if (temp & PORT_RESUME) + goto error; + /* line status bits may report this as low speed, + * which can be fine if this root hub has a + * transaction translator built in. + */ + fusbh200_vdbg (fusbh200, "port %d reset\n", wIndex + 1); + temp |= PORT_RESET; + temp &= ~PORT_PE; + + /* + * caller must wait, then call GetPortStatus + * usb 2.0 spec says 50 ms resets on root + */ + fusbh200->reset_done [wIndex] = jiffies + + msecs_to_jiffies (50); + fusbh200_writel(fusbh200, temp, status_reg); + break; + + /* For downstream facing ports (these): one hub port is put + * into test mode according to USB2 11.24.2.13, then the hub + * must be reset (which for root hub now means rmmod+modprobe, + * or else system reboot). See EHCI 2.3.9 and 4.14 for info + * about the EHCI-specific stuff. + */ + case USB_PORT_FEAT_TEST: + if (!selector || selector > 5) + goto error; + spin_unlock_irqrestore(&fusbh200->lock, flags); + fusbh200_quiesce(fusbh200); + spin_lock_irqsave(&fusbh200->lock, flags); + + /* Put all enabled ports into suspend */ + temp = fusbh200_readl(fusbh200, status_reg) & ~PORT_RWC_BITS; + if (temp & PORT_PE) + fusbh200_writel(fusbh200, temp | PORT_SUSPEND, + status_reg); + + spin_unlock_irqrestore(&fusbh200->lock, flags); + fusbh200_halt(fusbh200); + spin_lock_irqsave(&fusbh200->lock, flags); + + temp = fusbh200_readl(fusbh200, status_reg); + temp |= selector << 16; + fusbh200_writel(fusbh200, temp, status_reg); + break; + + default: + goto error; + } + fusbh200_readl(fusbh200, &fusbh200->regs->command); /* unblock posted writes */ + break; + + default: +error: + /* "stall" on error */ + retval = -EPIPE; + } + spin_unlock_irqrestore (&fusbh200->lock, flags); + return retval; +} + +static void __maybe_unused fusbh200_relinquish_port(struct usb_hcd *hcd, + int portnum) +{ + return; +} + +static int __maybe_unused fusbh200_port_handed_over(struct usb_hcd *hcd, + int portnum) +{ + return 0; +} +/*-------------------------------------------------------------------------*/ +/* + * There's basically three types of memory: + * - data used only by the HCD ... kmalloc is fine + * - async and periodic schedules, shared by HC and HCD ... these + * need to use dma_pool or dma_alloc_coherent + * - driver buffers, read/written by HC ... single shot DMA mapped + * + * There's also "register" data (e.g. PCI or SOC), which is memory mapped. + * No memory seen by this driver is pageable. + */ + +/*-------------------------------------------------------------------------*/ + +/* Allocate the key transfer structures from the previously allocated pool */ + +static inline void fusbh200_qtd_init(struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd, + dma_addr_t dma) +{ + memset (qtd, 0, sizeof *qtd); + qtd->qtd_dma = dma; + qtd->hw_token = cpu_to_hc32(fusbh200, QTD_STS_HALT); + qtd->hw_next = FUSBH200_LIST_END(fusbh200); + qtd->hw_alt_next = FUSBH200_LIST_END(fusbh200); + INIT_LIST_HEAD (&qtd->qtd_list); +} + +static struct fusbh200_qtd *fusbh200_qtd_alloc (struct fusbh200_hcd *fusbh200, gfp_t flags) +{ + struct fusbh200_qtd *qtd; + dma_addr_t dma; + + qtd = dma_pool_alloc (fusbh200->qtd_pool, flags, &dma); + if (qtd != NULL) { + fusbh200_qtd_init(fusbh200, qtd, dma); + } + return qtd; +} + +static inline void fusbh200_qtd_free (struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd) +{ + dma_pool_free (fusbh200->qtd_pool, qtd, qtd->qtd_dma); +} + + +static void qh_destroy(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + /* clean qtds first, and know this is not linked */ + if (!list_empty (&qh->qtd_list) || qh->qh_next.ptr) { + fusbh200_dbg (fusbh200, "unused qh not empty!\n"); + BUG (); + } + if (qh->dummy) + fusbh200_qtd_free (fusbh200, qh->dummy); + dma_pool_free(fusbh200->qh_pool, qh->hw, qh->qh_dma); + kfree(qh); +} + +static struct fusbh200_qh *fusbh200_qh_alloc (struct fusbh200_hcd *fusbh200, gfp_t flags) +{ + struct fusbh200_qh *qh; + dma_addr_t dma; + + qh = kzalloc(sizeof *qh, GFP_ATOMIC); + if (!qh) + goto done; + qh->hw = (struct fusbh200_qh_hw *) + dma_pool_alloc(fusbh200->qh_pool, flags, &dma); + if (!qh->hw) + goto fail; + memset(qh->hw, 0, sizeof *qh->hw); + qh->qh_dma = dma; + // INIT_LIST_HEAD (&qh->qh_list); + INIT_LIST_HEAD (&qh->qtd_list); + + /* dummy td enables safe urb queuing */ + qh->dummy = fusbh200_qtd_alloc (fusbh200, flags); + if (qh->dummy == NULL) { + fusbh200_dbg (fusbh200, "no dummy td\n"); + goto fail1; + } +done: + return qh; +fail1: + dma_pool_free(fusbh200->qh_pool, qh->hw, qh->qh_dma); +fail: + kfree(qh); + return NULL; +} + +/*-------------------------------------------------------------------------*/ + +/* The queue heads and transfer descriptors are managed from pools tied + * to each of the "per device" structures. + * This is the initialisation and cleanup code. + */ + +static void fusbh200_mem_cleanup (struct fusbh200_hcd *fusbh200) +{ + if (fusbh200->async) + qh_destroy(fusbh200, fusbh200->async); + fusbh200->async = NULL; + + if (fusbh200->dummy) + qh_destroy(fusbh200, fusbh200->dummy); + fusbh200->dummy = NULL; + + /* DMA consistent memory and pools */ + if (fusbh200->qtd_pool) + dma_pool_destroy (fusbh200->qtd_pool); + fusbh200->qtd_pool = NULL; + + if (fusbh200->qh_pool) { + dma_pool_destroy (fusbh200->qh_pool); + fusbh200->qh_pool = NULL; + } + + if (fusbh200->itd_pool) + dma_pool_destroy (fusbh200->itd_pool); + fusbh200->itd_pool = NULL; + + if (fusbh200->periodic) + dma_free_coherent (fusbh200_to_hcd(fusbh200)->self.controller, + fusbh200->periodic_size * sizeof (u32), + fusbh200->periodic, fusbh200->periodic_dma); + fusbh200->periodic = NULL; + + /* shadow periodic table */ + kfree(fusbh200->pshadow); + fusbh200->pshadow = NULL; +} + +/* remember to add cleanup code (above) if you add anything here */ +static int fusbh200_mem_init (struct fusbh200_hcd *fusbh200, gfp_t flags) +{ + int i; + + /* QTDs for control/bulk/intr transfers */ + fusbh200->qtd_pool = dma_pool_create ("fusbh200_qtd", + fusbh200_to_hcd(fusbh200)->self.controller, + sizeof (struct fusbh200_qtd), + 32 /* byte alignment (for hw parts) */, + 4096 /* can't cross 4K */); + if (!fusbh200->qtd_pool) { + goto fail; + } + + /* QHs for control/bulk/intr transfers */ + fusbh200->qh_pool = dma_pool_create ("fusbh200_qh", + fusbh200_to_hcd(fusbh200)->self.controller, + sizeof(struct fusbh200_qh_hw), + 32 /* byte alignment (for hw parts) */, + 4096 /* can't cross 4K */); + if (!fusbh200->qh_pool) { + goto fail; + } + fusbh200->async = fusbh200_qh_alloc (fusbh200, flags); + if (!fusbh200->async) { + goto fail; + } + + /* ITD for high speed ISO transfers */ + fusbh200->itd_pool = dma_pool_create ("fusbh200_itd", + fusbh200_to_hcd(fusbh200)->self.controller, + sizeof (struct fusbh200_itd), + 64 /* byte alignment (for hw parts) */, + 4096 /* can't cross 4K */); + if (!fusbh200->itd_pool) { + goto fail; + } + + /* Hardware periodic table */ + fusbh200->periodic = (__le32 *) + dma_alloc_coherent (fusbh200_to_hcd(fusbh200)->self.controller, + fusbh200->periodic_size * sizeof(__le32), + &fusbh200->periodic_dma, 0); + if (fusbh200->periodic == NULL) { + goto fail; + } + + for (i = 0; i < fusbh200->periodic_size; i++) + fusbh200->periodic[i] = FUSBH200_LIST_END(fusbh200); + + /* software shadow of hardware table */ + fusbh200->pshadow = kcalloc(fusbh200->periodic_size, sizeof(void *), flags); + if (fusbh200->pshadow != NULL) + return 0; + +fail: + fusbh200_dbg (fusbh200, "couldn't init memory\n"); + fusbh200_mem_cleanup (fusbh200); + return -ENOMEM; +} +/*-------------------------------------------------------------------------*/ +/* + * EHCI hardware queue manipulation ... the core. QH/QTD manipulation. + * + * Control, bulk, and interrupt traffic all use "qh" lists. They list "qtd" + * entries describing USB transactions, max 16-20kB/entry (with 4kB-aligned + * buffers needed for the larger number). We use one QH per endpoint, queue + * multiple urbs (all three types) per endpoint. URBs may need several qtds. + * + * ISO traffic uses "ISO TD" (itd) records, and (along with + * interrupts) needs careful scheduling. Performance improvements can be + * an ongoing challenge. That's in "ehci-sched.c". + * + * USB 1.1 devices are handled (a) by "companion" OHCI or UHCI root hubs, + * or otherwise through transaction translators (TTs) in USB 2.0 hubs using + * (b) special fields in qh entries or (c) split iso entries. TTs will + * buffer low/full speed data so the host collects it at high speed. + */ + +/*-------------------------------------------------------------------------*/ + +/* fill a qtd, returning how much of the buffer we were able to queue up */ + +static int +qtd_fill(struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd, dma_addr_t buf, + size_t len, int token, int maxpacket) +{ + int i, count; + u64 addr = buf; + + /* one buffer entry per 4K ... first might be short or unaligned */ + qtd->hw_buf[0] = cpu_to_hc32(fusbh200, (u32)addr); + qtd->hw_buf_hi[0] = cpu_to_hc32(fusbh200, (u32)(addr >> 32)); + count = 0x1000 - (buf & 0x0fff); /* rest of that page */ + if (likely (len < count)) /* ... iff needed */ + count = len; + else { + buf += 0x1000; + buf &= ~0x0fff; + + /* per-qtd limit: from 16K to 20K (best alignment) */ + for (i = 1; count < len && i < 5; i++) { + addr = buf; + qtd->hw_buf[i] = cpu_to_hc32(fusbh200, (u32)addr); + qtd->hw_buf_hi[i] = cpu_to_hc32(fusbh200, + (u32)(addr >> 32)); + buf += 0x1000; + if ((count + 0x1000) < len) + count += 0x1000; + else + count = len; + } + + /* short packets may only terminate transfers */ + if (count != len) + count -= (count % maxpacket); + } + qtd->hw_token = cpu_to_hc32(fusbh200, (count << 16) | token); + qtd->length = count; + + return count; +} + +/*-------------------------------------------------------------------------*/ + +static inline void +qh_update (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh, struct fusbh200_qtd *qtd) +{ + struct fusbh200_qh_hw *hw = qh->hw; + + /* writes to an active overlay are unsafe */ + BUG_ON(qh->qh_state != QH_STATE_IDLE); + + hw->hw_qtd_next = QTD_NEXT(fusbh200, qtd->qtd_dma); + hw->hw_alt_next = FUSBH200_LIST_END(fusbh200); + + /* Except for control endpoints, we make hardware maintain data + * toggle (like OHCI) ... here (re)initialize the toggle in the QH, + * and set the pseudo-toggle in udev. Only usb_clear_halt() will + * ever clear it. + */ + if (!(hw->hw_info1 & cpu_to_hc32(fusbh200, QH_TOGGLE_CTL))) { + unsigned is_out, epnum; + + is_out = qh->is_out; + epnum = (hc32_to_cpup(fusbh200, &hw->hw_info1) >> 8) & 0x0f; + if (unlikely (!usb_gettoggle (qh->dev, epnum, is_out))) { + hw->hw_token &= ~cpu_to_hc32(fusbh200, QTD_TOGGLE); + usb_settoggle (qh->dev, epnum, is_out, 1); + } + } + + hw->hw_token &= cpu_to_hc32(fusbh200, QTD_TOGGLE | QTD_STS_PING); +} + +/* if it weren't for a common silicon quirk (writing the dummy into the qh + * overlay, so qh->hw_token wrongly becomes inactive/halted), only fault + * recovery (including urb dequeue) would need software changes to a QH... + */ +static void +qh_refresh (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + struct fusbh200_qtd *qtd; + + if (list_empty (&qh->qtd_list)) + qtd = qh->dummy; + else { + qtd = list_entry (qh->qtd_list.next, + struct fusbh200_qtd, qtd_list); + /* + * first qtd may already be partially processed. + * If we come here during unlink, the QH overlay region + * might have reference to the just unlinked qtd. The + * qtd is updated in qh_completions(). Update the QH + * overlay here. + */ + if (cpu_to_hc32(fusbh200, qtd->qtd_dma) == qh->hw->hw_current) { + qh->hw->hw_qtd_next = qtd->hw_next; + qtd = NULL; + } + } + + if (qtd) + qh_update (fusbh200, qh, qtd); +} + +/*-------------------------------------------------------------------------*/ + +static void qh_link_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh); + +static void fusbh200_clear_tt_buffer_complete(struct usb_hcd *hcd, + struct usb_host_endpoint *ep) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd); + struct fusbh200_qh *qh = ep->hcpriv; + unsigned long flags; + + spin_lock_irqsave(&fusbh200->lock, flags); + qh->clearing_tt = 0; + if (qh->qh_state == QH_STATE_IDLE && !list_empty(&qh->qtd_list) + && fusbh200->rh_state == FUSBH200_RH_RUNNING) + qh_link_async(fusbh200, qh); + spin_unlock_irqrestore(&fusbh200->lock, flags); +} + +static void fusbh200_clear_tt_buffer(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh, + struct urb *urb, u32 token) +{ + + /* If an async split transaction gets an error or is unlinked, + * the TT buffer may be left in an indeterminate state. We + * have to clear the TT buffer. + * + * Note: this routine is never called for Isochronous transfers. + */ + if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) { +#ifdef DEBUG + struct usb_device *tt = urb->dev->tt->hub; + dev_dbg(&tt->dev, + "clear tt buffer port %d, a%d ep%d t%08x\n", + urb->dev->ttport, urb->dev->devnum, + usb_pipeendpoint(urb->pipe), token); +#endif /* DEBUG */ + if (urb->dev->tt->hub != + fusbh200_to_hcd(fusbh200)->self.root_hub) { + if (usb_hub_clear_tt_buffer(urb) == 0) + qh->clearing_tt = 1; + } + } +} + +static int qtd_copy_status ( + struct fusbh200_hcd *fusbh200, + struct urb *urb, + size_t length, + u32 token +) +{ + int status = -EINPROGRESS; + + /* count IN/OUT bytes, not SETUP (even short packets) */ + if (likely (QTD_PID (token) != 2)) + urb->actual_length += length - QTD_LENGTH (token); + + /* don't modify error codes */ + if (unlikely(urb->unlinked)) + return status; + + /* force cleanup after short read; not always an error */ + if (unlikely (IS_SHORT_READ (token))) + status = -EREMOTEIO; + + /* serious "can't proceed" faults reported by the hardware */ + if (token & QTD_STS_HALT) { + if (token & QTD_STS_BABBLE) { + /* FIXME "must" disable babbling device's port too */ + status = -EOVERFLOW; + /* CERR nonzero + halt --> stall */ + } else if (QTD_CERR(token)) { + status = -EPIPE; + + /* In theory, more than one of the following bits can be set + * since they are sticky and the transaction is retried. + * Which to test first is rather arbitrary. + */ + } else if (token & QTD_STS_MMF) { + /* fs/ls interrupt xfer missed the complete-split */ + status = -EPROTO; + } else if (token & QTD_STS_DBE) { + status = (QTD_PID (token) == 1) /* IN ? */ + ? -ENOSR /* hc couldn't read data */ + : -ECOMM; /* hc couldn't write data */ + } else if (token & QTD_STS_XACT) { + /* timeout, bad CRC, wrong PID, etc */ + fusbh200_dbg(fusbh200, "devpath %s ep%d%s 3strikes\n", + urb->dev->devpath, + usb_pipeendpoint(urb->pipe), + usb_pipein(urb->pipe) ? "in" : "out"); + status = -EPROTO; + } else { /* unknown */ + status = -EPROTO; + } + + fusbh200_vdbg (fusbh200, + "dev%d ep%d%s qtd token %08x --> status %d\n", + usb_pipedevice (urb->pipe), + usb_pipeendpoint (urb->pipe), + usb_pipein (urb->pipe) ? "in" : "out", + token, status); + } + + return status; +} + +static void +fusbh200_urb_done(struct fusbh200_hcd *fusbh200, struct urb *urb, int status) +__releases(fusbh200->lock) +__acquires(fusbh200->lock) +{ + if (likely (urb->hcpriv != NULL)) { + struct fusbh200_qh *qh = (struct fusbh200_qh *) urb->hcpriv; + + /* S-mask in a QH means it's an interrupt urb */ + if ((qh->hw->hw_info2 & cpu_to_hc32(fusbh200, QH_SMASK)) != 0) { + + /* ... update hc-wide periodic stats (for usbfs) */ + fusbh200_to_hcd(fusbh200)->self.bandwidth_int_reqs--; + } + } + + if (unlikely(urb->unlinked)) { + COUNT(fusbh200->stats.unlink); + } else { + /* report non-error and short read status as zero */ + if (status == -EINPROGRESS || status == -EREMOTEIO) + status = 0; + COUNT(fusbh200->stats.complete); + } + +#ifdef FUSBH200_URB_TRACE + fusbh200_dbg (fusbh200, + "%s %s urb %p ep%d%s status %d len %d/%d\n", + __func__, urb->dev->devpath, urb, + usb_pipeendpoint (urb->pipe), + usb_pipein (urb->pipe) ? "in" : "out", + status, + urb->actual_length, urb->transfer_buffer_length); +#endif + + /* complete() can reenter this HCD */ + usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb); + spin_unlock (&fusbh200->lock); + usb_hcd_giveback_urb(fusbh200_to_hcd(fusbh200), urb, status); + spin_lock (&fusbh200->lock); +} + +static int qh_schedule (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh); + +/* + * Process and free completed qtds for a qh, returning URBs to drivers. + * Chases up to qh->hw_current. Returns number of completions called, + * indicating how much "real" work we did. + */ +static unsigned +qh_completions (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + struct fusbh200_qtd *last, *end = qh->dummy; + struct list_head *entry, *tmp; + int last_status; + int stopped; + unsigned count = 0; + u8 state; + struct fusbh200_qh_hw *hw = qh->hw; + + if (unlikely (list_empty (&qh->qtd_list))) + return count; + + /* completions (or tasks on other cpus) must never clobber HALT + * till we've gone through and cleaned everything up, even when + * they add urbs to this qh's queue or mark them for unlinking. + * + * NOTE: unlinking expects to be done in queue order. + * + * It's a bug for qh->qh_state to be anything other than + * QH_STATE_IDLE, unless our caller is scan_async() or + * scan_intr(). + */ + state = qh->qh_state; + qh->qh_state = QH_STATE_COMPLETING; + stopped = (state == QH_STATE_IDLE); + + rescan: + last = NULL; + last_status = -EINPROGRESS; + qh->needs_rescan = 0; + + /* remove de-activated QTDs from front of queue. + * after faults (including short reads), cleanup this urb + * then let the queue advance. + * if queue is stopped, handles unlinks. + */ + list_for_each_safe (entry, tmp, &qh->qtd_list) { + struct fusbh200_qtd *qtd; + struct urb *urb; + u32 token = 0; + + qtd = list_entry (entry, struct fusbh200_qtd, qtd_list); + urb = qtd->urb; + + /* clean up any state from previous QTD ...*/ + if (last) { + if (likely (last->urb != urb)) { + fusbh200_urb_done(fusbh200, last->urb, last_status); + count++; + last_status = -EINPROGRESS; + } + fusbh200_qtd_free (fusbh200, last); + last = NULL; + } + + /* ignore urbs submitted during completions we reported */ + if (qtd == end) + break; + + /* hardware copies qtd out of qh overlay */ + rmb (); + token = hc32_to_cpu(fusbh200, qtd->hw_token); + + /* always clean up qtds the hc de-activated */ + retry_xacterr: + if ((token & QTD_STS_ACTIVE) == 0) { + + /* Report Data Buffer Error: non-fatal but useful */ + if (token & QTD_STS_DBE) + fusbh200_dbg(fusbh200, + "detected DataBufferErr for urb %p ep%d%s len %d, qtd %p [qh %p]\n", + urb, + usb_endpoint_num(&urb->ep->desc), + usb_endpoint_dir_in(&urb->ep->desc) ? "in" : "out", + urb->transfer_buffer_length, + qtd, + qh); + + /* on STALL, error, and short reads this urb must + * complete and all its qtds must be recycled. + */ + if ((token & QTD_STS_HALT) != 0) { + + /* retry transaction errors until we + * reach the software xacterr limit + */ + if ((token & QTD_STS_XACT) && + QTD_CERR(token) == 0 && + ++qh->xacterrs < QH_XACTERR_MAX && + !urb->unlinked) { + fusbh200_dbg(fusbh200, + "detected XactErr len %zu/%zu retry %d\n", + qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs); + + /* reset the token in the qtd and the + * qh overlay (which still contains + * the qtd) so that we pick up from + * where we left off + */ + token &= ~QTD_STS_HALT; + token |= QTD_STS_ACTIVE | + (FUSBH200_TUNE_CERR << 10); + qtd->hw_token = cpu_to_hc32(fusbh200, + token); + wmb(); + hw->hw_token = cpu_to_hc32(fusbh200, + token); + goto retry_xacterr; + } + stopped = 1; + + /* magic dummy for some short reads; qh won't advance. + * that silicon quirk can kick in with this dummy too. + * + * other short reads won't stop the queue, including + * control transfers (status stage handles that) or + * most other single-qtd reads ... the queue stops if + * URB_SHORT_NOT_OK was set so the driver submitting + * the urbs could clean it up. + */ + } else if (IS_SHORT_READ (token) + && !(qtd->hw_alt_next + & FUSBH200_LIST_END(fusbh200))) { + stopped = 1; + } + + /* stop scanning when we reach qtds the hc is using */ + } else if (likely (!stopped + && fusbh200->rh_state >= FUSBH200_RH_RUNNING)) { + break; + + /* scan the whole queue for unlinks whenever it stops */ + } else { + stopped = 1; + + /* cancel everything if we halt, suspend, etc */ + if (fusbh200->rh_state < FUSBH200_RH_RUNNING) + last_status = -ESHUTDOWN; + + /* this qtd is active; skip it unless a previous qtd + * for its urb faulted, or its urb was canceled. + */ + else if (last_status == -EINPROGRESS && !urb->unlinked) + continue; + + /* qh unlinked; token in overlay may be most current */ + if (state == QH_STATE_IDLE + && cpu_to_hc32(fusbh200, qtd->qtd_dma) + == hw->hw_current) { + token = hc32_to_cpu(fusbh200, hw->hw_token); + + /* An unlink may leave an incomplete + * async transaction in the TT buffer. + * We have to clear it. + */ + fusbh200_clear_tt_buffer(fusbh200, qh, urb, token); + } + } + + /* unless we already know the urb's status, collect qtd status + * and update count of bytes transferred. in common short read + * cases with only one data qtd (including control transfers), + * queue processing won't halt. but with two or more qtds (for + * example, with a 32 KB transfer), when the first qtd gets a + * short read the second must be removed by hand. + */ + if (last_status == -EINPROGRESS) { + last_status = qtd_copy_status(fusbh200, urb, + qtd->length, token); + if (last_status == -EREMOTEIO + && (qtd->hw_alt_next + & FUSBH200_LIST_END(fusbh200))) + last_status = -EINPROGRESS; + + /* As part of low/full-speed endpoint-halt processing + * we must clear the TT buffer (11.17.5). + */ + if (unlikely(last_status != -EINPROGRESS && + last_status != -EREMOTEIO)) { + /* The TT's in some hubs malfunction when they + * receive this request following a STALL (they + * stop sending isochronous packets). Since a + * STALL can't leave the TT buffer in a busy + * state (if you believe Figures 11-48 - 11-51 + * in the USB 2.0 spec), we won't clear the TT + * buffer in this case. Strictly speaking this + * is a violation of the spec. + */ + if (last_status != -EPIPE) + fusbh200_clear_tt_buffer(fusbh200, qh, urb, + token); + } + } + + /* if we're removing something not at the queue head, + * patch the hardware queue pointer. + */ + if (stopped && qtd->qtd_list.prev != &qh->qtd_list) { + last = list_entry (qtd->qtd_list.prev, + struct fusbh200_qtd, qtd_list); + last->hw_next = qtd->hw_next; + } + + /* remove qtd; it's recycled after possible urb completion */ + list_del (&qtd->qtd_list); + last = qtd; + + /* reinit the xacterr counter for the next qtd */ + qh->xacterrs = 0; + } + + /* last urb's completion might still need calling */ + if (likely (last != NULL)) { + fusbh200_urb_done(fusbh200, last->urb, last_status); + count++; + fusbh200_qtd_free (fusbh200, last); + } + + /* Do we need to rescan for URBs dequeued during a giveback? */ + if (unlikely(qh->needs_rescan)) { + /* If the QH is already unlinked, do the rescan now. */ + if (state == QH_STATE_IDLE) + goto rescan; + + /* Otherwise we have to wait until the QH is fully unlinked. + * Our caller will start an unlink if qh->needs_rescan is + * set. But if an unlink has already started, nothing needs + * to be done. + */ + if (state != QH_STATE_LINKED) + qh->needs_rescan = 0; + } + + /* restore original state; caller must unlink or relink */ + qh->qh_state = state; + + /* be sure the hardware's done with the qh before refreshing + * it after fault cleanup, or recovering from silicon wrongly + * overlaying the dummy qtd (which reduces DMA chatter). + */ + if (stopped != 0 || hw->hw_qtd_next == FUSBH200_LIST_END(fusbh200)) { + switch (state) { + case QH_STATE_IDLE: + qh_refresh(fusbh200, qh); + break; + case QH_STATE_LINKED: + /* We won't refresh a QH that's linked (after the HC + * stopped the queue). That avoids a race: + * - HC reads first part of QH; + * - CPU updates that first part and the token; + * - HC reads rest of that QH, including token + * Result: HC gets an inconsistent image, and then + * DMAs to/from the wrong memory (corrupting it). + * + * That should be rare for interrupt transfers, + * except maybe high bandwidth ... + */ + + /* Tell the caller to start an unlink */ + qh->needs_rescan = 1; + break; + /* otherwise, unlink already started */ + } + } + + return count; +} + +/*-------------------------------------------------------------------------*/ + +// high bandwidth multiplier, as encoded in highspeed endpoint descriptors +#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03)) +// ... and packet size, for any kind of endpoint descriptor +#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff) + +/* + * reverse of qh_urb_transaction: free a list of TDs. + * used for cleanup after errors, before HC sees an URB's TDs. + */ +static void qtd_list_free ( + struct fusbh200_hcd *fusbh200, + struct urb *urb, + struct list_head *qtd_list +) { + struct list_head *entry, *temp; + + list_for_each_safe (entry, temp, qtd_list) { + struct fusbh200_qtd *qtd; + + qtd = list_entry (entry, struct fusbh200_qtd, qtd_list); + list_del (&qtd->qtd_list); + fusbh200_qtd_free (fusbh200, qtd); + } +} + +/* + * create a list of filled qtds for this URB; won't link into qh. + */ +static struct list_head * +qh_urb_transaction ( + struct fusbh200_hcd *fusbh200, + struct urb *urb, + struct list_head *head, + gfp_t flags +) { + struct fusbh200_qtd *qtd, *qtd_prev; + dma_addr_t buf; + int len, this_sg_len, maxpacket; + int is_input; + u32 token; + int i; + struct scatterlist *sg; + + /* + * URBs map to sequences of QTDs: one logical transaction + */ + qtd = fusbh200_qtd_alloc (fusbh200, flags); + if (unlikely (!qtd)) + return NULL; + list_add_tail (&qtd->qtd_list, head); + qtd->urb = urb; + + token = QTD_STS_ACTIVE; + token |= (FUSBH200_TUNE_CERR << 10); + /* for split transactions, SplitXState initialized to zero */ + + len = urb->transfer_buffer_length; + is_input = usb_pipein (urb->pipe); + if (usb_pipecontrol (urb->pipe)) { + /* SETUP pid */ + qtd_fill(fusbh200, qtd, urb->setup_dma, + sizeof (struct usb_ctrlrequest), + token | (2 /* "setup" */ << 8), 8); + + /* ... and always at least one more pid */ + token ^= QTD_TOGGLE; + qtd_prev = qtd; + qtd = fusbh200_qtd_alloc (fusbh200, flags); + if (unlikely (!qtd)) + goto cleanup; + qtd->urb = urb; + qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma); + list_add_tail (&qtd->qtd_list, head); + + /* for zero length DATA stages, STATUS is always IN */ + if (len == 0) + token |= (1 /* "in" */ << 8); + } + + /* + * data transfer stage: buffer setup + */ + i = urb->num_mapped_sgs; + if (len > 0 && i > 0) { + sg = urb->sg; + buf = sg_dma_address(sg); + + /* urb->transfer_buffer_length may be smaller than the + * size of the scatterlist (or vice versa) + */ + this_sg_len = min_t(int, sg_dma_len(sg), len); + } else { + sg = NULL; + buf = urb->transfer_dma; + this_sg_len = len; + } + + if (is_input) + token |= (1 /* "in" */ << 8); + /* else it's already initted to "out" pid (0 << 8) */ + + maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input)); + + /* + * buffer gets wrapped in one or more qtds; + * last one may be "short" (including zero len) + * and may serve as a control status ack + */ + for (;;) { + int this_qtd_len; + + this_qtd_len = qtd_fill(fusbh200, qtd, buf, this_sg_len, token, + maxpacket); + this_sg_len -= this_qtd_len; + len -= this_qtd_len; + buf += this_qtd_len; + + /* + * short reads advance to a "magic" dummy instead of the next + * qtd ... that forces the queue to stop, for manual cleanup. + * (this will usually be overridden later.) + */ + if (is_input) + qtd->hw_alt_next = fusbh200->async->hw->hw_alt_next; + + /* qh makes control packets use qtd toggle; maybe switch it */ + if ((maxpacket & (this_qtd_len + (maxpacket - 1))) == 0) + token ^= QTD_TOGGLE; + + if (likely(this_sg_len <= 0)) { + if (--i <= 0 || len <= 0) + break; + sg = sg_next(sg); + buf = sg_dma_address(sg); + this_sg_len = min_t(int, sg_dma_len(sg), len); + } + + qtd_prev = qtd; + qtd = fusbh200_qtd_alloc (fusbh200, flags); + if (unlikely (!qtd)) + goto cleanup; + qtd->urb = urb; + qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma); + list_add_tail (&qtd->qtd_list, head); + } + + /* + * unless the caller requires manual cleanup after short reads, + * have the alt_next mechanism keep the queue running after the + * last data qtd (the only one, for control and most other cases). + */ + if (likely ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0 + || usb_pipecontrol (urb->pipe))) + qtd->hw_alt_next = FUSBH200_LIST_END(fusbh200); + + /* + * control requests may need a terminating data "status" ack; + * other OUT ones may need a terminating short packet + * (zero length). + */ + if (likely (urb->transfer_buffer_length != 0)) { + int one_more = 0; + + if (usb_pipecontrol (urb->pipe)) { + one_more = 1; + token ^= 0x0100; /* "in" <--> "out" */ + token |= QTD_TOGGLE; /* force DATA1 */ + } else if (usb_pipeout(urb->pipe) + && (urb->transfer_flags & URB_ZERO_PACKET) + && !(urb->transfer_buffer_length % maxpacket)) { + one_more = 1; + } + if (one_more) { + qtd_prev = qtd; + qtd = fusbh200_qtd_alloc (fusbh200, flags); + if (unlikely (!qtd)) + goto cleanup; + qtd->urb = urb; + qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma); + list_add_tail (&qtd->qtd_list, head); + + /* never any data in such packets */ + qtd_fill(fusbh200, qtd, 0, 0, token, 0); + } + } + + /* by default, enable interrupt on urb completion */ + if (likely (!(urb->transfer_flags & URB_NO_INTERRUPT))) + qtd->hw_token |= cpu_to_hc32(fusbh200, QTD_IOC); + return head; + +cleanup: + qtd_list_free (fusbh200, urb, head); + return NULL; +} + +/*-------------------------------------------------------------------------*/ + +// Would be best to create all qh's from config descriptors, +// when each interface/altsetting is established. Unlink +// any previous qh and cancel its urbs first; endpoints are +// implicitly reset then (data toggle too). +// That'd mean updating how usbcore talks to HCDs. (2.7?) + + +/* + * Each QH holds a qtd list; a QH is used for everything except iso. + * + * For interrupt urbs, the scheduler must set the microframe scheduling + * mask(s) each time the QH gets scheduled. For highspeed, that's + * just one microframe in the s-mask. For split interrupt transactions + * there are additional complications: c-mask, maybe FSTNs. + */ +static struct fusbh200_qh * +qh_make ( + struct fusbh200_hcd *fusbh200, + struct urb *urb, + gfp_t flags +) { + struct fusbh200_qh *qh = fusbh200_qh_alloc (fusbh200, flags); + u32 info1 = 0, info2 = 0; + int is_input, type; + int maxp = 0; + struct usb_tt *tt = urb->dev->tt; + struct fusbh200_qh_hw *hw; + + if (!qh) + return qh; + + /* + * init endpoint/device data for this QH + */ + info1 |= usb_pipeendpoint (urb->pipe) << 8; + info1 |= usb_pipedevice (urb->pipe) << 0; + + is_input = usb_pipein (urb->pipe); + type = usb_pipetype (urb->pipe); + maxp = usb_maxpacket (urb->dev, urb->pipe, !is_input); + + /* 1024 byte maxpacket is a hardware ceiling. High bandwidth + * acts like up to 3KB, but is built from smaller packets. + */ + if (max_packet(maxp) > 1024) { + fusbh200_dbg(fusbh200, "bogus qh maxpacket %d\n", max_packet(maxp)); + goto done; + } + + /* Compute interrupt scheduling parameters just once, and save. + * - allowing for high bandwidth, how many nsec/uframe are used? + * - split transactions need a second CSPLIT uframe; same question + * - splits also need a schedule gap (for full/low speed I/O) + * - qh has a polling interval + * + * For control/bulk requests, the HC or TT handles these. + */ + if (type == PIPE_INTERRUPT) { + qh->usecs = NS_TO_US(usb_calc_bus_time(USB_SPEED_HIGH, + is_input, 0, + hb_mult(maxp) * max_packet(maxp))); + qh->start = NO_FRAME; + + if (urb->dev->speed == USB_SPEED_HIGH) { + qh->c_usecs = 0; + qh->gap_uf = 0; + + qh->period = urb->interval >> 3; + if (qh->period == 0 && urb->interval != 1) { + /* NOTE interval 2 or 4 uframes could work. + * But interval 1 scheduling is simpler, and + * includes high bandwidth. + */ + urb->interval = 1; + } else if (qh->period > fusbh200->periodic_size) { + qh->period = fusbh200->periodic_size; + urb->interval = qh->period << 3; + } + } else { + int think_time; + + /* gap is f(FS/LS transfer times) */ + qh->gap_uf = 1 + usb_calc_bus_time (urb->dev->speed, + is_input, 0, maxp) / (125 * 1000); + + /* FIXME this just approximates SPLIT/CSPLIT times */ + if (is_input) { // SPLIT, gap, CSPLIT+DATA + qh->c_usecs = qh->usecs + HS_USECS (0); + qh->usecs = HS_USECS (1); + } else { // SPLIT+DATA, gap, CSPLIT + qh->usecs += HS_USECS (1); + qh->c_usecs = HS_USECS (0); + } + + think_time = tt ? tt->think_time : 0; + qh->tt_usecs = NS_TO_US (think_time + + usb_calc_bus_time (urb->dev->speed, + is_input, 0, max_packet (maxp))); + qh->period = urb->interval; + if (qh->period > fusbh200->periodic_size) { + qh->period = fusbh200->periodic_size; + urb->interval = qh->period; + } + } + } + + /* support for tt scheduling, and access to toggles */ + qh->dev = urb->dev; + + /* using TT? */ + switch (urb->dev->speed) { + case USB_SPEED_LOW: + info1 |= QH_LOW_SPEED; + /* FALL THROUGH */ + + case USB_SPEED_FULL: + /* EPS 0 means "full" */ + if (type != PIPE_INTERRUPT) + info1 |= (FUSBH200_TUNE_RL_TT << 28); + if (type == PIPE_CONTROL) { + info1 |= QH_CONTROL_EP; /* for TT */ + info1 |= QH_TOGGLE_CTL; /* toggle from qtd */ + } + info1 |= maxp << 16; + + info2 |= (FUSBH200_TUNE_MULT_TT << 30); + + /* Some Freescale processors have an erratum in which the + * port number in the queue head was 0..N-1 instead of 1..N. + */ + if (fusbh200_has_fsl_portno_bug(fusbh200)) + info2 |= (urb->dev->ttport-1) << 23; + else + info2 |= urb->dev->ttport << 23; + + /* set the address of the TT; for TDI's integrated + * root hub tt, leave it zeroed. + */ + if (tt && tt->hub != fusbh200_to_hcd(fusbh200)->self.root_hub) + info2 |= tt->hub->devnum << 16; + + /* NOTE: if (PIPE_INTERRUPT) { scheduler sets c-mask } */ + + break; + + case USB_SPEED_HIGH: /* no TT involved */ + info1 |= QH_HIGH_SPEED; + if (type == PIPE_CONTROL) { + info1 |= (FUSBH200_TUNE_RL_HS << 28); + info1 |= 64 << 16; /* usb2 fixed maxpacket */ + info1 |= QH_TOGGLE_CTL; /* toggle from qtd */ + info2 |= (FUSBH200_TUNE_MULT_HS << 30); + } else if (type == PIPE_BULK) { + info1 |= (FUSBH200_TUNE_RL_HS << 28); + /* The USB spec says that high speed bulk endpoints + * always use 512 byte maxpacket. But some device + * vendors decided to ignore that, and MSFT is happy + * to help them do so. So now people expect to use + * such nonconformant devices with Linux too; sigh. + */ + info1 |= max_packet(maxp) << 16; + info2 |= (FUSBH200_TUNE_MULT_HS << 30); + } else { /* PIPE_INTERRUPT */ + info1 |= max_packet (maxp) << 16; + info2 |= hb_mult (maxp) << 30; + } + break; + default: + fusbh200_dbg(fusbh200, "bogus dev %p speed %d\n", urb->dev, + urb->dev->speed); +done: + qh_destroy(fusbh200, qh); + return NULL; + } + + /* NOTE: if (PIPE_INTERRUPT) { scheduler sets s-mask } */ + + /* init as live, toggle clear, advance to dummy */ + qh->qh_state = QH_STATE_IDLE; + hw = qh->hw; + hw->hw_info1 = cpu_to_hc32(fusbh200, info1); + hw->hw_info2 = cpu_to_hc32(fusbh200, info2); + qh->is_out = !is_input; + usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe), !is_input, 1); + qh_refresh (fusbh200, qh); + return qh; +} + +/*-------------------------------------------------------------------------*/ + +static void enable_async(struct fusbh200_hcd *fusbh200) +{ + if (fusbh200->async_count++) + return; + + /* Stop waiting to turn off the async schedule */ + fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_DISABLE_ASYNC); + + /* Don't start the schedule until ASS is 0 */ + fusbh200_poll_ASS(fusbh200); + turn_on_io_watchdog(fusbh200); +} + +static void disable_async(struct fusbh200_hcd *fusbh200) +{ + if (--fusbh200->async_count) + return; + + /* The async schedule and async_unlink list are supposed to be empty */ + WARN_ON(fusbh200->async->qh_next.qh || fusbh200->async_unlink); + + /* Don't turn off the schedule until ASS is 1 */ + fusbh200_poll_ASS(fusbh200); +} + +/* move qh (and its qtds) onto async queue; maybe enable queue. */ + +static void qh_link_async (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + __hc32 dma = QH_NEXT(fusbh200, qh->qh_dma); + struct fusbh200_qh *head; + + /* Don't link a QH if there's a Clear-TT-Buffer pending */ + if (unlikely(qh->clearing_tt)) + return; + + WARN_ON(qh->qh_state != QH_STATE_IDLE); + + /* clear halt and/or toggle; and maybe recover from silicon quirk */ + qh_refresh(fusbh200, qh); + + /* splice right after start */ + head = fusbh200->async; + qh->qh_next = head->qh_next; + qh->hw->hw_next = head->hw->hw_next; + wmb (); + + head->qh_next.qh = qh; + head->hw->hw_next = dma; + + qh->xacterrs = 0; + qh->qh_state = QH_STATE_LINKED; + /* qtd completions reported later by interrupt */ + + enable_async(fusbh200); +} + +/*-------------------------------------------------------------------------*/ + +/* + * For control/bulk/interrupt, return QH with these TDs appended. + * Allocates and initializes the QH if necessary. + * Returns null if it can't allocate a QH it needs to. + * If the QH has TDs (urbs) already, that's great. + */ +static struct fusbh200_qh *qh_append_tds ( + struct fusbh200_hcd *fusbh200, + struct urb *urb, + struct list_head *qtd_list, + int epnum, + void **ptr +) +{ + struct fusbh200_qh *qh = NULL; + __hc32 qh_addr_mask = cpu_to_hc32(fusbh200, 0x7f); + + qh = (struct fusbh200_qh *) *ptr; + if (unlikely (qh == NULL)) { + /* can't sleep here, we have fusbh200->lock... */ + qh = qh_make (fusbh200, urb, GFP_ATOMIC); + *ptr = qh; + } + if (likely (qh != NULL)) { + struct fusbh200_qtd *qtd; + + if (unlikely (list_empty (qtd_list))) + qtd = NULL; + else + qtd = list_entry (qtd_list->next, struct fusbh200_qtd, + qtd_list); + + /* control qh may need patching ... */ + if (unlikely (epnum == 0)) { + + /* usb_reset_device() briefly reverts to address 0 */ + if (usb_pipedevice (urb->pipe) == 0) + qh->hw->hw_info1 &= ~qh_addr_mask; + } + + /* just one way to queue requests: swap with the dummy qtd. + * only hc or qh_refresh() ever modify the overlay. + */ + if (likely (qtd != NULL)) { + struct fusbh200_qtd *dummy; + dma_addr_t dma; + __hc32 token; + + /* to avoid racing the HC, use the dummy td instead of + * the first td of our list (becomes new dummy). both + * tds stay deactivated until we're done, when the + * HC is allowed to fetch the old dummy (4.10.2). + */ + token = qtd->hw_token; + qtd->hw_token = HALT_BIT(fusbh200); + + dummy = qh->dummy; + + dma = dummy->qtd_dma; + *dummy = *qtd; + dummy->qtd_dma = dma; + + list_del (&qtd->qtd_list); + list_add (&dummy->qtd_list, qtd_list); + list_splice_tail(qtd_list, &qh->qtd_list); + + fusbh200_qtd_init(fusbh200, qtd, qtd->qtd_dma); + qh->dummy = qtd; + + /* hc must see the new dummy at list end */ + dma = qtd->qtd_dma; + qtd = list_entry (qh->qtd_list.prev, + struct fusbh200_qtd, qtd_list); + qtd->hw_next = QTD_NEXT(fusbh200, dma); + + /* let the hc process these next qtds */ + wmb (); + dummy->hw_token = token; + + urb->hcpriv = qh; + } + } + return qh; +} + +/*-------------------------------------------------------------------------*/ + +static int +submit_async ( + struct fusbh200_hcd *fusbh200, + struct urb *urb, + struct list_head *qtd_list, + gfp_t mem_flags +) { + int epnum; + unsigned long flags; + struct fusbh200_qh *qh = NULL; + int rc; + + epnum = urb->ep->desc.bEndpointAddress; + +#ifdef FUSBH200_URB_TRACE + { + struct fusbh200_qtd *qtd; + qtd = list_entry(qtd_list->next, struct fusbh200_qtd, qtd_list); + fusbh200_dbg(fusbh200, + "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n", + __func__, urb->dev->devpath, urb, + epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out", + urb->transfer_buffer_length, + qtd, urb->ep->hcpriv); + } +#endif + + spin_lock_irqsave (&fusbh200->lock, flags); + if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) { + rc = -ESHUTDOWN; + goto done; + } + rc = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb); + if (unlikely(rc)) + goto done; + + qh = qh_append_tds(fusbh200, urb, qtd_list, epnum, &urb->ep->hcpriv); + if (unlikely(qh == NULL)) { + usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb); + rc = -ENOMEM; + goto done; + } + + /* Control/bulk operations through TTs don't need scheduling, + * the HC and TT handle it when the TT has a buffer ready. + */ + if (likely (qh->qh_state == QH_STATE_IDLE)) + qh_link_async(fusbh200, qh); + done: + spin_unlock_irqrestore (&fusbh200->lock, flags); + if (unlikely (qh == NULL)) + qtd_list_free (fusbh200, urb, qtd_list); + return rc; +} + +/*-------------------------------------------------------------------------*/ + +static void single_unlink_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + struct fusbh200_qh *prev; + + /* Add to the end of the list of QHs waiting for the next IAAD */ + qh->qh_state = QH_STATE_UNLINK; + if (fusbh200->async_unlink) + fusbh200->async_unlink_last->unlink_next = qh; + else + fusbh200->async_unlink = qh; + fusbh200->async_unlink_last = qh; + + /* Unlink it from the schedule */ + prev = fusbh200->async; + while (prev->qh_next.qh != qh) + prev = prev->qh_next.qh; + + prev->hw->hw_next = qh->hw->hw_next; + prev->qh_next = qh->qh_next; + if (fusbh200->qh_scan_next == qh) + fusbh200->qh_scan_next = qh->qh_next.qh; +} + +static void start_iaa_cycle(struct fusbh200_hcd *fusbh200, bool nested) +{ + /* + * Do nothing if an IAA cycle is already running or + * if one will be started shortly. + */ + if (fusbh200->async_iaa || fusbh200->async_unlinking) + return; + + /* Do all the waiting QHs at once */ + fusbh200->async_iaa = fusbh200->async_unlink; + fusbh200->async_unlink = NULL; + + /* If the controller isn't running, we don't have to wait for it */ + if (unlikely(fusbh200->rh_state < FUSBH200_RH_RUNNING)) { + if (!nested) /* Avoid recursion */ + end_unlink_async(fusbh200); + + /* Otherwise start a new IAA cycle */ + } else if (likely(fusbh200->rh_state == FUSBH200_RH_RUNNING)) { + /* Make sure the unlinks are all visible to the hardware */ + wmb(); + + fusbh200_writel(fusbh200, fusbh200->command | CMD_IAAD, + &fusbh200->regs->command); + fusbh200_readl(fusbh200, &fusbh200->regs->command); + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_IAA_WATCHDOG, true); + } +} + +/* the async qh for the qtds being unlinked are now gone from the HC */ + +static void end_unlink_async(struct fusbh200_hcd *fusbh200) +{ + struct fusbh200_qh *qh; + + /* Process the idle QHs */ + restart: + fusbh200->async_unlinking = true; + while (fusbh200->async_iaa) { + qh = fusbh200->async_iaa; + fusbh200->async_iaa = qh->unlink_next; + qh->unlink_next = NULL; + + qh->qh_state = QH_STATE_IDLE; + qh->qh_next.qh = NULL; + + qh_completions(fusbh200, qh); + if (!list_empty(&qh->qtd_list) && + fusbh200->rh_state == FUSBH200_RH_RUNNING) + qh_link_async(fusbh200, qh); + disable_async(fusbh200); + } + fusbh200->async_unlinking = false; + + /* Start a new IAA cycle if any QHs are waiting for it */ + if (fusbh200->async_unlink) { + start_iaa_cycle(fusbh200, true); + if (unlikely(fusbh200->rh_state < FUSBH200_RH_RUNNING)) + goto restart; + } +} + +static void unlink_empty_async(struct fusbh200_hcd *fusbh200) +{ + struct fusbh200_qh *qh, *next; + bool stopped = (fusbh200->rh_state < FUSBH200_RH_RUNNING); + bool check_unlinks_later = false; + + /* Unlink all the async QHs that have been empty for a timer cycle */ + next = fusbh200->async->qh_next.qh; + while (next) { + qh = next; + next = qh->qh_next.qh; + + if (list_empty(&qh->qtd_list) && + qh->qh_state == QH_STATE_LINKED) { + if (!stopped && qh->unlink_cycle == + fusbh200->async_unlink_cycle) + check_unlinks_later = true; + else + single_unlink_async(fusbh200, qh); + } + } + + /* Start a new IAA cycle if any QHs are waiting for it */ + if (fusbh200->async_unlink) + start_iaa_cycle(fusbh200, false); + + /* QHs that haven't been empty for long enough will be handled later */ + if (check_unlinks_later) { + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_ASYNC_UNLINKS, true); + ++fusbh200->async_unlink_cycle; + } +} + +/* makes sure the async qh will become idle */ +/* caller must own fusbh200->lock */ + +static void start_unlink_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + /* + * If the QH isn't linked then there's nothing we can do + * unless we were called during a giveback, in which case + * qh_completions() has to deal with it. + */ + if (qh->qh_state != QH_STATE_LINKED) { + if (qh->qh_state == QH_STATE_COMPLETING) + qh->needs_rescan = 1; + return; + } + + single_unlink_async(fusbh200, qh); + start_iaa_cycle(fusbh200, false); +} + +/*-------------------------------------------------------------------------*/ + +static void scan_async (struct fusbh200_hcd *fusbh200) +{ + struct fusbh200_qh *qh; + bool check_unlinks_later = false; + + fusbh200->qh_scan_next = fusbh200->async->qh_next.qh; + while (fusbh200->qh_scan_next) { + qh = fusbh200->qh_scan_next; + fusbh200->qh_scan_next = qh->qh_next.qh; + rescan: + /* clean any finished work for this qh */ + if (!list_empty(&qh->qtd_list)) { + int temp; + + /* + * Unlinks could happen here; completion reporting + * drops the lock. That's why fusbh200->qh_scan_next + * always holds the next qh to scan; if the next qh + * gets unlinked then fusbh200->qh_scan_next is adjusted + * in single_unlink_async(). + */ + temp = qh_completions(fusbh200, qh); + if (qh->needs_rescan) { + start_unlink_async(fusbh200, qh); + } else if (list_empty(&qh->qtd_list) + && qh->qh_state == QH_STATE_LINKED) { + qh->unlink_cycle = fusbh200->async_unlink_cycle; + check_unlinks_later = true; + } else if (temp != 0) + goto rescan; + } + } + + /* + * Unlink empty entries, reducing DMA usage as well + * as HCD schedule-scanning costs. Delay for any qh + * we just scanned, there's a not-unusual case that it + * doesn't stay idle for long. + */ + if (check_unlinks_later && fusbh200->rh_state == FUSBH200_RH_RUNNING && + !(fusbh200->enabled_hrtimer_events & + BIT(FUSBH200_HRTIMER_ASYNC_UNLINKS))) { + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_ASYNC_UNLINKS, true); + ++fusbh200->async_unlink_cycle; + } +} +/*-------------------------------------------------------------------------*/ +/* + * EHCI scheduled transaction support: interrupt, iso, split iso + * These are called "periodic" transactions in the EHCI spec. + * + * Note that for interrupt transfers, the QH/QTD manipulation is shared + * with the "asynchronous" transaction support (control/bulk transfers). + * The only real difference is in how interrupt transfers are scheduled. + * + * For ISO, we make an "iso_stream" head to serve the same role as a QH. + * It keeps track of every ITD (or SITD) that's linked, and holds enough + * pre-calculated schedule data to make appending to the queue be quick. + */ + +static int fusbh200_get_frame (struct usb_hcd *hcd); + +/*-------------------------------------------------------------------------*/ + +/* + * periodic_next_shadow - return "next" pointer on shadow list + * @periodic: host pointer to qh/itd + * @tag: hardware tag for type of this record + */ +static union fusbh200_shadow * +periodic_next_shadow(struct fusbh200_hcd *fusbh200, union fusbh200_shadow *periodic, + __hc32 tag) +{ + switch (hc32_to_cpu(fusbh200, tag)) { + case Q_TYPE_QH: + return &periodic->qh->qh_next; + case Q_TYPE_FSTN: + return &periodic->fstn->fstn_next; + default: + return &periodic->itd->itd_next; + } +} + +static __hc32 * +shadow_next_periodic(struct fusbh200_hcd *fusbh200, union fusbh200_shadow *periodic, + __hc32 tag) +{ + switch (hc32_to_cpu(fusbh200, tag)) { + /* our fusbh200_shadow.qh is actually software part */ + case Q_TYPE_QH: + return &periodic->qh->hw->hw_next; + /* others are hw parts */ + default: + return periodic->hw_next; + } +} + +/* caller must hold fusbh200->lock */ +static void periodic_unlink (struct fusbh200_hcd *fusbh200, unsigned frame, void *ptr) +{ + union fusbh200_shadow *prev_p = &fusbh200->pshadow[frame]; + __hc32 *hw_p = &fusbh200->periodic[frame]; + union fusbh200_shadow here = *prev_p; + + /* find predecessor of "ptr"; hw and shadow lists are in sync */ + while (here.ptr && here.ptr != ptr) { + prev_p = periodic_next_shadow(fusbh200, prev_p, + Q_NEXT_TYPE(fusbh200, *hw_p)); + hw_p = shadow_next_periodic(fusbh200, &here, + Q_NEXT_TYPE(fusbh200, *hw_p)); + here = *prev_p; + } + /* an interrupt entry (at list end) could have been shared */ + if (!here.ptr) + return; + + /* update shadow and hardware lists ... the old "next" pointers + * from ptr may still be in use, the caller updates them. + */ + *prev_p = *periodic_next_shadow(fusbh200, &here, + Q_NEXT_TYPE(fusbh200, *hw_p)); + + *hw_p = *shadow_next_periodic(fusbh200, &here, + Q_NEXT_TYPE(fusbh200, *hw_p)); +} + +/* how many of the uframe's 125 usecs are allocated? */ +static unsigned short +periodic_usecs (struct fusbh200_hcd *fusbh200, unsigned frame, unsigned uframe) +{ + __hc32 *hw_p = &fusbh200->periodic [frame]; + union fusbh200_shadow *q = &fusbh200->pshadow [frame]; + unsigned usecs = 0; + struct fusbh200_qh_hw *hw; + + while (q->ptr) { + switch (hc32_to_cpu(fusbh200, Q_NEXT_TYPE(fusbh200, *hw_p))) { + case Q_TYPE_QH: + hw = q->qh->hw; + /* is it in the S-mask? */ + if (hw->hw_info2 & cpu_to_hc32(fusbh200, 1 << uframe)) + usecs += q->qh->usecs; + /* ... or C-mask? */ + if (hw->hw_info2 & cpu_to_hc32(fusbh200, + 1 << (8 + uframe))) + usecs += q->qh->c_usecs; + hw_p = &hw->hw_next; + q = &q->qh->qh_next; + break; + // case Q_TYPE_FSTN: + default: + /* for "save place" FSTNs, count the relevant INTR + * bandwidth from the previous frame + */ + if (q->fstn->hw_prev != FUSBH200_LIST_END(fusbh200)) { + fusbh200_dbg (fusbh200, "ignoring FSTN cost ...\n"); + } + hw_p = &q->fstn->hw_next; + q = &q->fstn->fstn_next; + break; + case Q_TYPE_ITD: + if (q->itd->hw_transaction[uframe]) + usecs += q->itd->stream->usecs; + hw_p = &q->itd->hw_next; + q = &q->itd->itd_next; + break; + } + } +#ifdef DEBUG + if (usecs > fusbh200->uframe_periodic_max) + fusbh200_err (fusbh200, "uframe %d sched overrun: %d usecs\n", + frame * 8 + uframe, usecs); +#endif + return usecs; +} + +/*-------------------------------------------------------------------------*/ + +static int same_tt (struct usb_device *dev1, struct usb_device *dev2) +{ + if (!dev1->tt || !dev2->tt) + return 0; + if (dev1->tt != dev2->tt) + return 0; + if (dev1->tt->multi) + return dev1->ttport == dev2->ttport; + else + return 1; +} + +/* return true iff the device's transaction translator is available + * for a periodic transfer starting at the specified frame, using + * all the uframes in the mask. + */ +static int tt_no_collision ( + struct fusbh200_hcd *fusbh200, + unsigned period, + struct usb_device *dev, + unsigned frame, + u32 uf_mask +) +{ + if (period == 0) /* error */ + return 0; + + /* note bandwidth wastage: split never follows csplit + * (different dev or endpoint) until the next uframe. + * calling convention doesn't make that distinction. + */ + for (; frame < fusbh200->periodic_size; frame += period) { + union fusbh200_shadow here; + __hc32 type; + struct fusbh200_qh_hw *hw; + + here = fusbh200->pshadow [frame]; + type = Q_NEXT_TYPE(fusbh200, fusbh200->periodic [frame]); + while (here.ptr) { + switch (hc32_to_cpu(fusbh200, type)) { + case Q_TYPE_ITD: + type = Q_NEXT_TYPE(fusbh200, here.itd->hw_next); + here = here.itd->itd_next; + continue; + case Q_TYPE_QH: + hw = here.qh->hw; + if (same_tt (dev, here.qh->dev)) { + u32 mask; + + mask = hc32_to_cpu(fusbh200, + hw->hw_info2); + /* "knows" no gap is needed */ + mask |= mask >> 8; + if (mask & uf_mask) + break; + } + type = Q_NEXT_TYPE(fusbh200, hw->hw_next); + here = here.qh->qh_next; + continue; + // case Q_TYPE_FSTN: + default: + fusbh200_dbg (fusbh200, + "periodic frame %d bogus type %d\n", + frame, type); + } + + /* collision or error */ + return 0; + } + } + + /* no collision */ + return 1; +} + +/*-------------------------------------------------------------------------*/ + +static void enable_periodic(struct fusbh200_hcd *fusbh200) +{ + if (fusbh200->periodic_count++) + return; + + /* Stop waiting to turn off the periodic schedule */ + fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_DISABLE_PERIODIC); + + /* Don't start the schedule until PSS is 0 */ + fusbh200_poll_PSS(fusbh200); + turn_on_io_watchdog(fusbh200); +} + +static void disable_periodic(struct fusbh200_hcd *fusbh200) +{ + if (--fusbh200->periodic_count) + return; + + /* Don't turn off the schedule until PSS is 1 */ + fusbh200_poll_PSS(fusbh200); +} + +/*-------------------------------------------------------------------------*/ + +/* periodic schedule slots have iso tds (normal or split) first, then a + * sparse tree for active interrupt transfers. + * + * this just links in a qh; caller guarantees uframe masks are set right. + * no FSTN support (yet; fusbh200 0.96+) + */ +static void qh_link_periodic(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + unsigned i; + unsigned period = qh->period; + + dev_dbg (&qh->dev->dev, + "link qh%d-%04x/%p start %d [%d/%d us]\n", + period, hc32_to_cpup(fusbh200, &qh->hw->hw_info2) + & (QH_CMASK | QH_SMASK), + qh, qh->start, qh->usecs, qh->c_usecs); + + /* high bandwidth, or otherwise every microframe */ + if (period == 0) + period = 1; + + for (i = qh->start; i < fusbh200->periodic_size; i += period) { + union fusbh200_shadow *prev = &fusbh200->pshadow[i]; + __hc32 *hw_p = &fusbh200->periodic[i]; + union fusbh200_shadow here = *prev; + __hc32 type = 0; + + /* skip the iso nodes at list head */ + while (here.ptr) { + type = Q_NEXT_TYPE(fusbh200, *hw_p); + if (type == cpu_to_hc32(fusbh200, Q_TYPE_QH)) + break; + prev = periodic_next_shadow(fusbh200, prev, type); + hw_p = shadow_next_periodic(fusbh200, &here, type); + here = *prev; + } + + /* sorting each branch by period (slow-->fast) + * enables sharing interior tree nodes + */ + while (here.ptr && qh != here.qh) { + if (qh->period > here.qh->period) + break; + prev = &here.qh->qh_next; + hw_p = &here.qh->hw->hw_next; + here = *prev; + } + /* link in this qh, unless some earlier pass did that */ + if (qh != here.qh) { + qh->qh_next = here; + if (here.qh) + qh->hw->hw_next = *hw_p; + wmb (); + prev->qh = qh; + *hw_p = QH_NEXT (fusbh200, qh->qh_dma); + } + } + qh->qh_state = QH_STATE_LINKED; + qh->xacterrs = 0; + + /* update per-qh bandwidth for usbfs */ + fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated += qh->period + ? ((qh->usecs + qh->c_usecs) / qh->period) + : (qh->usecs * 8); + + list_add(&qh->intr_node, &fusbh200->intr_qh_list); + + /* maybe enable periodic schedule processing */ + ++fusbh200->intr_count; + enable_periodic(fusbh200); +} + +static void qh_unlink_periodic(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + unsigned i; + unsigned period; + + /* + * If qh is for a low/full-speed device, simply unlinking it + * could interfere with an ongoing split transaction. To unlink + * it safely would require setting the QH_INACTIVATE bit and + * waiting at least one frame, as described in EHCI 4.12.2.5. + * + * We won't bother with any of this. Instead, we assume that the + * only reason for unlinking an interrupt QH while the current URB + * is still active is to dequeue all the URBs (flush the whole + * endpoint queue). + * + * If rebalancing the periodic schedule is ever implemented, this + * approach will no longer be valid. + */ + + /* high bandwidth, or otherwise part of every microframe */ + if ((period = qh->period) == 0) + period = 1; + + for (i = qh->start; i < fusbh200->periodic_size; i += period) + periodic_unlink (fusbh200, i, qh); + + /* update per-qh bandwidth for usbfs */ + fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated -= qh->period + ? ((qh->usecs + qh->c_usecs) / qh->period) + : (qh->usecs * 8); + + dev_dbg (&qh->dev->dev, + "unlink qh%d-%04x/%p start %d [%d/%d us]\n", + qh->period, + hc32_to_cpup(fusbh200, &qh->hw->hw_info2) & (QH_CMASK | QH_SMASK), + qh, qh->start, qh->usecs, qh->c_usecs); + + /* qh->qh_next still "live" to HC */ + qh->qh_state = QH_STATE_UNLINK; + qh->qh_next.ptr = NULL; + + if (fusbh200->qh_scan_next == qh) + fusbh200->qh_scan_next = list_entry(qh->intr_node.next, + struct fusbh200_qh, intr_node); + list_del(&qh->intr_node); +} + +static void start_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + /* If the QH isn't linked then there's nothing we can do + * unless we were called during a giveback, in which case + * qh_completions() has to deal with it. + */ + if (qh->qh_state != QH_STATE_LINKED) { + if (qh->qh_state == QH_STATE_COMPLETING) + qh->needs_rescan = 1; + return; + } + + qh_unlink_periodic (fusbh200, qh); + + /* Make sure the unlinks are visible before starting the timer */ + wmb(); + + /* + * The EHCI spec doesn't say how long it takes the controller to + * stop accessing an unlinked interrupt QH. The timer delay is + * 9 uframes; presumably that will be long enough. + */ + qh->unlink_cycle = fusbh200->intr_unlink_cycle; + + /* New entries go at the end of the intr_unlink list */ + if (fusbh200->intr_unlink) + fusbh200->intr_unlink_last->unlink_next = qh; + else + fusbh200->intr_unlink = qh; + fusbh200->intr_unlink_last = qh; + + if (fusbh200->intr_unlinking) + ; /* Avoid recursive calls */ + else if (fusbh200->rh_state < FUSBH200_RH_RUNNING) + fusbh200_handle_intr_unlinks(fusbh200); + else if (fusbh200->intr_unlink == qh) { + fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_UNLINK_INTR, true); + ++fusbh200->intr_unlink_cycle; + } +} + +static void end_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + struct fusbh200_qh_hw *hw = qh->hw; + int rc; + + qh->qh_state = QH_STATE_IDLE; + hw->hw_next = FUSBH200_LIST_END(fusbh200); + + qh_completions(fusbh200, qh); + + /* reschedule QH iff another request is queued */ + if (!list_empty(&qh->qtd_list) && fusbh200->rh_state == FUSBH200_RH_RUNNING) { + rc = qh_schedule(fusbh200, qh); + + /* An error here likely indicates handshake failure + * or no space left in the schedule. Neither fault + * should happen often ... + * + * FIXME kill the now-dysfunctional queued urbs + */ + if (rc != 0) + fusbh200_err(fusbh200, "can't reschedule qh %p, err %d\n", + qh, rc); + } + + /* maybe turn off periodic schedule */ + --fusbh200->intr_count; + disable_periodic(fusbh200); +} + +/*-------------------------------------------------------------------------*/ + +static int check_period ( + struct fusbh200_hcd *fusbh200, + unsigned frame, + unsigned uframe, + unsigned period, + unsigned usecs +) { + int claimed; + + /* complete split running into next frame? + * given FSTN support, we could sometimes check... + */ + if (uframe >= 8) + return 0; + + /* convert "usecs we need" to "max already claimed" */ + usecs = fusbh200->uframe_periodic_max - usecs; + + /* we "know" 2 and 4 uframe intervals were rejected; so + * for period 0, check _every_ microframe in the schedule. + */ + if (unlikely (period == 0)) { + do { + for (uframe = 0; uframe < 7; uframe++) { + claimed = periodic_usecs (fusbh200, frame, uframe); + if (claimed > usecs) + return 0; + } + } while ((frame += 1) < fusbh200->periodic_size); + + /* just check the specified uframe, at that period */ + } else { + do { + claimed = periodic_usecs (fusbh200, frame, uframe); + if (claimed > usecs) + return 0; + } while ((frame += period) < fusbh200->periodic_size); + } + + // success! + return 1; +} + +static int check_intr_schedule ( + struct fusbh200_hcd *fusbh200, + unsigned frame, + unsigned uframe, + const struct fusbh200_qh *qh, + __hc32 *c_maskp +) +{ + int retval = -ENOSPC; + u8 mask = 0; + + if (qh->c_usecs && uframe >= 6) /* FSTN territory? */ + goto done; + + if (!check_period (fusbh200, frame, uframe, qh->period, qh->usecs)) + goto done; + if (!qh->c_usecs) { + retval = 0; + *c_maskp = 0; + goto done; + } + + /* Make sure this tt's buffer is also available for CSPLITs. + * We pessimize a bit; probably the typical full speed case + * doesn't need the second CSPLIT. + * + * NOTE: both SPLIT and CSPLIT could be checked in just + * one smart pass... + */ + mask = 0x03 << (uframe + qh->gap_uf); + *c_maskp = cpu_to_hc32(fusbh200, mask << 8); + + mask |= 1 << uframe; + if (tt_no_collision (fusbh200, qh->period, qh->dev, frame, mask)) { + if (!check_period (fusbh200, frame, uframe + qh->gap_uf + 1, + qh->period, qh->c_usecs)) + goto done; + if (!check_period (fusbh200, frame, uframe + qh->gap_uf, + qh->period, qh->c_usecs)) + goto done; + retval = 0; + } +done: + return retval; +} + +/* "first fit" scheduling policy used the first time through, + * or when the previous schedule slot can't be re-used. + */ +static int qh_schedule(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh) +{ + int status; + unsigned uframe; + __hc32 c_mask; + unsigned frame; /* 0..(qh->period - 1), or NO_FRAME */ + struct fusbh200_qh_hw *hw = qh->hw; + + qh_refresh(fusbh200, qh); + hw->hw_next = FUSBH200_LIST_END(fusbh200); + frame = qh->start; + + /* reuse the previous schedule slots, if we can */ + if (frame < qh->period) { + uframe = ffs(hc32_to_cpup(fusbh200, &hw->hw_info2) & QH_SMASK); + status = check_intr_schedule (fusbh200, frame, --uframe, + qh, &c_mask); + } else { + uframe = 0; + c_mask = 0; + status = -ENOSPC; + } + + /* else scan the schedule to find a group of slots such that all + * uframes have enough periodic bandwidth available. + */ + if (status) { + /* "normal" case, uframing flexible except with splits */ + if (qh->period) { + int i; + + for (i = qh->period; status && i > 0; --i) { + frame = ++fusbh200->random_frame % qh->period; + for (uframe = 0; uframe < 8; uframe++) { + status = check_intr_schedule (fusbh200, + frame, uframe, qh, + &c_mask); + if (status == 0) + break; + } + } + + /* qh->period == 0 means every uframe */ + } else { + frame = 0; + status = check_intr_schedule (fusbh200, 0, 0, qh, &c_mask); + } + if (status) + goto done; + qh->start = frame; + + /* reset S-frame and (maybe) C-frame masks */ + hw->hw_info2 &= cpu_to_hc32(fusbh200, ~(QH_CMASK | QH_SMASK)); + hw->hw_info2 |= qh->period + ? cpu_to_hc32(fusbh200, 1 << uframe) + : cpu_to_hc32(fusbh200, QH_SMASK); + hw->hw_info2 |= c_mask; + } else + fusbh200_dbg (fusbh200, "reused qh %p schedule\n", qh); + + /* stuff into the periodic schedule */ + qh_link_periodic(fusbh200, qh); +done: + return status; +} + +static int intr_submit ( + struct fusbh200_hcd *fusbh200, + struct urb *urb, + struct list_head *qtd_list, + gfp_t mem_flags +) { + unsigned epnum; + unsigned long flags; + struct fusbh200_qh *qh; + int status; + struct list_head empty; + + /* get endpoint and transfer/schedule data */ + epnum = urb->ep->desc.bEndpointAddress; + + spin_lock_irqsave (&fusbh200->lock, flags); + + if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) { + status = -ESHUTDOWN; + goto done_not_linked; + } + status = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb); + if (unlikely(status)) + goto done_not_linked; + + /* get qh and force any scheduling errors */ + INIT_LIST_HEAD (&empty); + qh = qh_append_tds(fusbh200, urb, &empty, epnum, &urb->ep->hcpriv); + if (qh == NULL) { + status = -ENOMEM; + goto done; + } + if (qh->qh_state == QH_STATE_IDLE) { + if ((status = qh_schedule (fusbh200, qh)) != 0) + goto done; + } + + /* then queue the urb's tds to the qh */ + qh = qh_append_tds(fusbh200, urb, qtd_list, epnum, &urb->ep->hcpriv); + BUG_ON (qh == NULL); + + /* ... update usbfs periodic stats */ + fusbh200_to_hcd(fusbh200)->self.bandwidth_int_reqs++; + +done: + if (unlikely(status)) + usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb); +done_not_linked: + spin_unlock_irqrestore (&fusbh200->lock, flags); + if (status) + qtd_list_free (fusbh200, urb, qtd_list); + + return status; +} + +static void scan_intr(struct fusbh200_hcd *fusbh200) +{ + struct fusbh200_qh *qh; + + list_for_each_entry_safe(qh, fusbh200->qh_scan_next, &fusbh200->intr_qh_list, + intr_node) { + rescan: + /* clean any finished work for this qh */ + if (!list_empty(&qh->qtd_list)) { + int temp; + + /* + * Unlinks could happen here; completion reporting + * drops the lock. That's why fusbh200->qh_scan_next + * always holds the next qh to scan; if the next qh + * gets unlinked then fusbh200->qh_scan_next is adjusted + * in qh_unlink_periodic(). + */ + temp = qh_completions(fusbh200, qh); + if (unlikely(qh->needs_rescan || + (list_empty(&qh->qtd_list) && + qh->qh_state == QH_STATE_LINKED))) + start_unlink_intr(fusbh200, qh); + else if (temp != 0) + goto rescan; + } + } +} + +/*-------------------------------------------------------------------------*/ + +/* fusbh200_iso_stream ops work with both ITD and SITD */ + +static struct fusbh200_iso_stream * +iso_stream_alloc (gfp_t mem_flags) +{ + struct fusbh200_iso_stream *stream; + + stream = kzalloc(sizeof *stream, mem_flags); + if (likely (stream != NULL)) { + INIT_LIST_HEAD(&stream->td_list); + INIT_LIST_HEAD(&stream->free_list); + stream->next_uframe = -1; + } + return stream; +} + +static void +iso_stream_init ( + struct fusbh200_hcd *fusbh200, + struct fusbh200_iso_stream *stream, + struct usb_device *dev, + int pipe, + unsigned interval +) +{ + u32 buf1; + unsigned epnum, maxp; + int is_input; + long bandwidth; + unsigned multi; + + /* + * this might be a "high bandwidth" highspeed endpoint, + * as encoded in the ep descriptor's wMaxPacket field + */ + epnum = usb_pipeendpoint (pipe); + is_input = usb_pipein (pipe) ? USB_DIR_IN : 0; + maxp = usb_maxpacket(dev, pipe, !is_input); + if (is_input) { + buf1 = (1 << 11); + } else { + buf1 = 0; + } + + maxp = max_packet(maxp); + multi = hb_mult(maxp); + buf1 |= maxp; + maxp *= multi; + + stream->buf0 = cpu_to_hc32(fusbh200, (epnum << 8) | dev->devnum); + stream->buf1 = cpu_to_hc32(fusbh200, buf1); + stream->buf2 = cpu_to_hc32(fusbh200, multi); + + /* usbfs wants to report the average usecs per frame tied up + * when transfers on this endpoint are scheduled ... + */ + if (dev->speed == USB_SPEED_FULL) { + interval <<= 3; + stream->usecs = NS_TO_US(usb_calc_bus_time(dev->speed, + is_input, 1, maxp)); + stream->usecs /= 8; + } else { + stream->highspeed = 1; + stream->usecs = HS_USECS_ISO (maxp); + } + bandwidth = stream->usecs * 8; + bandwidth /= interval; + + stream->bandwidth = bandwidth; + stream->udev = dev; + stream->bEndpointAddress = is_input | epnum; + stream->interval = interval; + stream->maxp = maxp; +} + +static struct fusbh200_iso_stream * +iso_stream_find (struct fusbh200_hcd *fusbh200, struct urb *urb) +{ + unsigned epnum; + struct fusbh200_iso_stream *stream; + struct usb_host_endpoint *ep; + unsigned long flags; + + epnum = usb_pipeendpoint (urb->pipe); + if (usb_pipein(urb->pipe)) + ep = urb->dev->ep_in[epnum]; + else + ep = urb->dev->ep_out[epnum]; + + spin_lock_irqsave (&fusbh200->lock, flags); + stream = ep->hcpriv; + + if (unlikely (stream == NULL)) { + stream = iso_stream_alloc(GFP_ATOMIC); + if (likely (stream != NULL)) { + ep->hcpriv = stream; + stream->ep = ep; + iso_stream_init(fusbh200, stream, urb->dev, urb->pipe, + urb->interval); + } + + /* if dev->ep [epnum] is a QH, hw is set */ + } else if (unlikely (stream->hw != NULL)) { + fusbh200_dbg (fusbh200, "dev %s ep%d%s, not iso??\n", + urb->dev->devpath, epnum, + usb_pipein(urb->pipe) ? "in" : "out"); + stream = NULL; + } + + spin_unlock_irqrestore (&fusbh200->lock, flags); + return stream; +} + +/*-------------------------------------------------------------------------*/ + +/* fusbh200_iso_sched ops can be ITD-only or SITD-only */ + +static struct fusbh200_iso_sched * +iso_sched_alloc (unsigned packets, gfp_t mem_flags) +{ + struct fusbh200_iso_sched *iso_sched; + int size = sizeof *iso_sched; + + size += packets * sizeof (struct fusbh200_iso_packet); + iso_sched = kzalloc(size, mem_flags); + if (likely (iso_sched != NULL)) { + INIT_LIST_HEAD (&iso_sched->td_list); + } + return iso_sched; +} + +static inline void +itd_sched_init( + struct fusbh200_hcd *fusbh200, + struct fusbh200_iso_sched *iso_sched, + struct fusbh200_iso_stream *stream, + struct urb *urb +) +{ + unsigned i; + dma_addr_t dma = urb->transfer_dma; + + /* how many uframes are needed for these transfers */ + iso_sched->span = urb->number_of_packets * stream->interval; + + /* figure out per-uframe itd fields that we'll need later + * when we fit new itds into the schedule. + */ + for (i = 0; i < urb->number_of_packets; i++) { + struct fusbh200_iso_packet *uframe = &iso_sched->packet [i]; + unsigned length; + dma_addr_t buf; + u32 trans; + + length = urb->iso_frame_desc [i].length; + buf = dma + urb->iso_frame_desc [i].offset; + + trans = FUSBH200_ISOC_ACTIVE; + trans |= buf & 0x0fff; + if (unlikely (((i + 1) == urb->number_of_packets)) + && !(urb->transfer_flags & URB_NO_INTERRUPT)) + trans |= FUSBH200_ITD_IOC; + trans |= length << 16; + uframe->transaction = cpu_to_hc32(fusbh200, trans); + + /* might need to cross a buffer page within a uframe */ + uframe->bufp = (buf & ~(u64)0x0fff); + buf += length; + if (unlikely ((uframe->bufp != (buf & ~(u64)0x0fff)))) + uframe->cross = 1; + } +} + +static void +iso_sched_free ( + struct fusbh200_iso_stream *stream, + struct fusbh200_iso_sched *iso_sched +) +{ + if (!iso_sched) + return; + // caller must hold fusbh200->lock! + list_splice (&iso_sched->td_list, &stream->free_list); + kfree (iso_sched); +} + +static int +itd_urb_transaction ( + struct fusbh200_iso_stream *stream, + struct fusbh200_hcd *fusbh200, + struct urb *urb, + gfp_t mem_flags +) +{ + struct fusbh200_itd *itd; + dma_addr_t itd_dma; + int i; + unsigned num_itds; + struct fusbh200_iso_sched *sched; + unsigned long flags; + + sched = iso_sched_alloc (urb->number_of_packets, mem_flags); + if (unlikely (sched == NULL)) + return -ENOMEM; + + itd_sched_init(fusbh200, sched, stream, urb); + + if (urb->interval < 8) + num_itds = 1 + (sched->span + 7) / 8; + else + num_itds = urb->number_of_packets; + + /* allocate/init ITDs */ + spin_lock_irqsave (&fusbh200->lock, flags); + for (i = 0; i < num_itds; i++) { + + /* + * Use iTDs from the free list, but not iTDs that may + * still be in use by the hardware. + */ + if (likely(!list_empty(&stream->free_list))) { + itd = list_first_entry(&stream->free_list, + struct fusbh200_itd, itd_list); + if (itd->frame == fusbh200->now_frame) + goto alloc_itd; + list_del (&itd->itd_list); + itd_dma = itd->itd_dma; + } else { + alloc_itd: + spin_unlock_irqrestore (&fusbh200->lock, flags); + itd = dma_pool_alloc (fusbh200->itd_pool, mem_flags, + &itd_dma); + spin_lock_irqsave (&fusbh200->lock, flags); + if (!itd) { + iso_sched_free(stream, sched); + spin_unlock_irqrestore(&fusbh200->lock, flags); + return -ENOMEM; + } + } + + memset (itd, 0, sizeof *itd); + itd->itd_dma = itd_dma; + list_add (&itd->itd_list, &sched->td_list); + } + spin_unlock_irqrestore (&fusbh200->lock, flags); + + /* temporarily store schedule info in hcpriv */ + urb->hcpriv = sched; + urb->error_count = 0; + return 0; +} + +/*-------------------------------------------------------------------------*/ + +static inline int +itd_slot_ok ( + struct fusbh200_hcd *fusbh200, + u32 mod, + u32 uframe, + u8 usecs, + u32 period +) +{ + uframe %= period; + do { + /* can't commit more than uframe_periodic_max usec */ + if (periodic_usecs (fusbh200, uframe >> 3, uframe & 0x7) + > (fusbh200->uframe_periodic_max - usecs)) + return 0; + + /* we know urb->interval is 2^N uframes */ + uframe += period; + } while (uframe < mod); + return 1; +} + +/* + * This scheduler plans almost as far into the future as it has actual + * periodic schedule slots. (Affected by TUNE_FLS, which defaults to + * "as small as possible" to be cache-friendlier.) That limits the size + * transfers you can stream reliably; avoid more than 64 msec per urb. + * Also avoid queue depths of less than fusbh200's worst irq latency (affected + * by the per-urb URB_NO_INTERRUPT hint, the log2_irq_thresh module parameter, + * and other factors); or more than about 230 msec total (for portability, + * given FUSBH200_TUNE_FLS and the slop). Or, write a smarter scheduler! + */ + +#define SCHEDULE_SLOP 80 /* microframes */ + +static int +iso_stream_schedule ( + struct fusbh200_hcd *fusbh200, + struct urb *urb, + struct fusbh200_iso_stream *stream +) +{ + u32 now, next, start, period, span; + int status; + unsigned mod = fusbh200->periodic_size << 3; + struct fusbh200_iso_sched *sched = urb->hcpriv; + + period = urb->interval; + span = sched->span; + + if (span > mod - SCHEDULE_SLOP) { + fusbh200_dbg (fusbh200, "iso request %p too long\n", urb); + status = -EFBIG; + goto fail; + } + + now = fusbh200_read_frame_index(fusbh200) & (mod - 1); + + /* Typical case: reuse current schedule, stream is still active. + * Hopefully there are no gaps from the host falling behind + * (irq delays etc), but if there are we'll take the next + * slot in the schedule, implicitly assuming URB_ISO_ASAP. + */ + if (likely (!list_empty (&stream->td_list))) { + u32 excess; + + /* For high speed devices, allow scheduling within the + * isochronous scheduling threshold. For full speed devices + * and Intel PCI-based controllers, don't (work around for + * Intel ICH9 bug). + */ + if (!stream->highspeed && fusbh200->fs_i_thresh) + next = now + fusbh200->i_thresh; + else + next = now; + + /* Fell behind (by up to twice the slop amount)? + * We decide based on the time of the last currently-scheduled + * slot, not the time of the next available slot. + */ + excess = (stream->next_uframe - period - next) & (mod - 1); + if (excess >= mod - 2 * SCHEDULE_SLOP) + start = next + excess - mod + period * + DIV_ROUND_UP(mod - excess, period); + else + start = next + excess + period; + if (start - now >= mod) { + fusbh200_dbg(fusbh200, "request %p would overflow (%d+%d >= %d)\n", + urb, start - now - period, period, + mod); + status = -EFBIG; + goto fail; + } + } + + /* need to schedule; when's the next (u)frame we could start? + * this is bigger than fusbh200->i_thresh allows; scheduling itself + * isn't free, the slop should handle reasonably slow cpus. it + * can also help high bandwidth if the dma and irq loads don't + * jump until after the queue is primed. + */ + else { + int done = 0; + start = SCHEDULE_SLOP + (now & ~0x07); + + /* NOTE: assumes URB_ISO_ASAP, to limit complexity/bugs */ + + /* find a uframe slot with enough bandwidth. + * Early uframes are more precious because full-speed + * iso IN transfers can't use late uframes, + * and therefore they should be allocated last. + */ + next = start; + start += period; + do { + start--; + /* check schedule: enough space? */ + if (itd_slot_ok(fusbh200, mod, start, + stream->usecs, period)) + done = 1; + } while (start > next && !done); + + /* no room in the schedule */ + if (!done) { + fusbh200_dbg(fusbh200, "iso resched full %p (now %d max %d)\n", + urb, now, now + mod); + status = -ENOSPC; + goto fail; + } + } + + /* Tried to schedule too far into the future? */ + if (unlikely(start - now + span - period + >= mod - 2 * SCHEDULE_SLOP)) { + fusbh200_dbg(fusbh200, "request %p would overflow (%d+%d >= %d)\n", + urb, start - now, span - period, + mod - 2 * SCHEDULE_SLOP); + status = -EFBIG; + goto fail; + } + + stream->next_uframe = start & (mod - 1); + + /* report high speed start in uframes; full speed, in frames */ + urb->start_frame = stream->next_uframe; + if (!stream->highspeed) + urb->start_frame >>= 3; + + /* Make sure scan_isoc() sees these */ + if (fusbh200->isoc_count == 0) + fusbh200->next_frame = now >> 3; + return 0; + + fail: + iso_sched_free(stream, sched); + urb->hcpriv = NULL; + return status; +} + +/*-------------------------------------------------------------------------*/ + +static inline void +itd_init(struct fusbh200_hcd *fusbh200, struct fusbh200_iso_stream *stream, + struct fusbh200_itd *itd) +{ + int i; + + /* it's been recently zeroed */ + itd->hw_next = FUSBH200_LIST_END(fusbh200); + itd->hw_bufp [0] = stream->buf0; + itd->hw_bufp [1] = stream->buf1; + itd->hw_bufp [2] = stream->buf2; + + for (i = 0; i < 8; i++) + itd->index[i] = -1; + + /* All other fields are filled when scheduling */ +} + +static inline void +itd_patch( + struct fusbh200_hcd *fusbh200, + struct fusbh200_itd *itd, + struct fusbh200_iso_sched *iso_sched, + unsigned index, + u16 uframe +) +{ + struct fusbh200_iso_packet *uf = &iso_sched->packet [index]; + unsigned pg = itd->pg; + + // BUG_ON (pg == 6 && uf->cross); + + uframe &= 0x07; + itd->index [uframe] = index; + + itd->hw_transaction[uframe] = uf->transaction; + itd->hw_transaction[uframe] |= cpu_to_hc32(fusbh200, pg << 12); + itd->hw_bufp[pg] |= cpu_to_hc32(fusbh200, uf->bufp & ~(u32)0); + itd->hw_bufp_hi[pg] |= cpu_to_hc32(fusbh200, (u32)(uf->bufp >> 32)); + + /* iso_frame_desc[].offset must be strictly increasing */ + if (unlikely (uf->cross)) { + u64 bufp = uf->bufp + 4096; + + itd->pg = ++pg; + itd->hw_bufp[pg] |= cpu_to_hc32(fusbh200, bufp & ~(u32)0); + itd->hw_bufp_hi[pg] |= cpu_to_hc32(fusbh200, (u32)(bufp >> 32)); + } +} + +static inline void +itd_link (struct fusbh200_hcd *fusbh200, unsigned frame, struct fusbh200_itd *itd) +{ + union fusbh200_shadow *prev = &fusbh200->pshadow[frame]; + __hc32 *hw_p = &fusbh200->periodic[frame]; + union fusbh200_shadow here = *prev; + __hc32 type = 0; + + /* skip any iso nodes which might belong to previous microframes */ + while (here.ptr) { + type = Q_NEXT_TYPE(fusbh200, *hw_p); + if (type == cpu_to_hc32(fusbh200, Q_TYPE_QH)) + break; + prev = periodic_next_shadow(fusbh200, prev, type); + hw_p = shadow_next_periodic(fusbh200, &here, type); + here = *prev; + } + + itd->itd_next = here; + itd->hw_next = *hw_p; + prev->itd = itd; + itd->frame = frame; + wmb (); + *hw_p = cpu_to_hc32(fusbh200, itd->itd_dma | Q_TYPE_ITD); +} + +/* fit urb's itds into the selected schedule slot; activate as needed */ +static void itd_link_urb( + struct fusbh200_hcd *fusbh200, + struct urb *urb, + unsigned mod, + struct fusbh200_iso_stream *stream +) +{ + int packet; + unsigned next_uframe, uframe, frame; + struct fusbh200_iso_sched *iso_sched = urb->hcpriv; + struct fusbh200_itd *itd; + + next_uframe = stream->next_uframe & (mod - 1); + + if (unlikely (list_empty(&stream->td_list))) { + fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated + += stream->bandwidth; + fusbh200_vdbg (fusbh200, + "schedule devp %s ep%d%s-iso period %d start %d.%d\n", + urb->dev->devpath, stream->bEndpointAddress & 0x0f, + (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out", + urb->interval, + next_uframe >> 3, next_uframe & 0x7); + } + + /* fill iTDs uframe by uframe */ + for (packet = 0, itd = NULL; packet < urb->number_of_packets; ) { + if (itd == NULL) { + /* ASSERT: we have all necessary itds */ + // BUG_ON (list_empty (&iso_sched->td_list)); + + /* ASSERT: no itds for this endpoint in this uframe */ + + itd = list_entry (iso_sched->td_list.next, + struct fusbh200_itd, itd_list); + list_move_tail (&itd->itd_list, &stream->td_list); + itd->stream = stream; + itd->urb = urb; + itd_init (fusbh200, stream, itd); + } + + uframe = next_uframe & 0x07; + frame = next_uframe >> 3; + + itd_patch(fusbh200, itd, iso_sched, packet, uframe); + + next_uframe += stream->interval; + next_uframe &= mod - 1; + packet++; + + /* link completed itds into the schedule */ + if (((next_uframe >> 3) != frame) + || packet == urb->number_of_packets) { + itd_link(fusbh200, frame & (fusbh200->periodic_size - 1), itd); + itd = NULL; + } + } + stream->next_uframe = next_uframe; + + /* don't need that schedule data any more */ + iso_sched_free (stream, iso_sched); + urb->hcpriv = NULL; + + ++fusbh200->isoc_count; + enable_periodic(fusbh200); +} + +#define ISO_ERRS (FUSBH200_ISOC_BUF_ERR | FUSBH200_ISOC_BABBLE | FUSBH200_ISOC_XACTERR) + +/* Process and recycle a completed ITD. Return true iff its urb completed, + * and hence its completion callback probably added things to the hardware + * schedule. + * + * Note that we carefully avoid recycling this descriptor until after any + * completion callback runs, so that it won't be reused quickly. That is, + * assuming (a) no more than two urbs per frame on this endpoint, and also + * (b) only this endpoint's completions submit URBs. It seems some silicon + * corrupts things if you reuse completed descriptors very quickly... + */ +static bool itd_complete(struct fusbh200_hcd *fusbh200, struct fusbh200_itd *itd) +{ + struct urb *urb = itd->urb; + struct usb_iso_packet_descriptor *desc; + u32 t; + unsigned uframe; + int urb_index = -1; + struct fusbh200_iso_stream *stream = itd->stream; + struct usb_device *dev; + bool retval = false; + + /* for each uframe with a packet */ + for (uframe = 0; uframe < 8; uframe++) { + if (likely (itd->index[uframe] == -1)) + continue; + urb_index = itd->index[uframe]; + desc = &urb->iso_frame_desc [urb_index]; + + t = hc32_to_cpup(fusbh200, &itd->hw_transaction [uframe]); + itd->hw_transaction [uframe] = 0; + + /* report transfer status */ + if (unlikely (t & ISO_ERRS)) { + urb->error_count++; + if (t & FUSBH200_ISOC_BUF_ERR) + desc->status = usb_pipein (urb->pipe) + ? -ENOSR /* hc couldn't read */ + : -ECOMM; /* hc couldn't write */ + else if (t & FUSBH200_ISOC_BABBLE) + desc->status = -EOVERFLOW; + else /* (t & FUSBH200_ISOC_XACTERR) */ + desc->status = -EPROTO; + + /* HC need not update length with this error */ + if (!(t & FUSBH200_ISOC_BABBLE)) { + desc->actual_length = fusbh200_itdlen(urb, desc, t); + urb->actual_length += desc->actual_length; + } + } else if (likely ((t & FUSBH200_ISOC_ACTIVE) == 0)) { + desc->status = 0; + desc->actual_length = fusbh200_itdlen(urb, desc, t); + urb->actual_length += desc->actual_length; + } else { + /* URB was too late */ + desc->status = -EXDEV; + } + } + + /* handle completion now? */ + if (likely ((urb_index + 1) != urb->number_of_packets)) + goto done; + + /* ASSERT: it's really the last itd for this urb + list_for_each_entry (itd, &stream->td_list, itd_list) + BUG_ON (itd->urb == urb); + */ + + /* give urb back to the driver; completion often (re)submits */ + dev = urb->dev; + fusbh200_urb_done(fusbh200, urb, 0); + retval = true; + urb = NULL; + + --fusbh200->isoc_count; + disable_periodic(fusbh200); + + if (unlikely(list_is_singular(&stream->td_list))) { + fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated + -= stream->bandwidth; + fusbh200_vdbg (fusbh200, + "deschedule devp %s ep%d%s-iso\n", + dev->devpath, stream->bEndpointAddress & 0x0f, + (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out"); + } + +done: + itd->urb = NULL; + + /* Add to the end of the free list for later reuse */ + list_move_tail(&itd->itd_list, &stream->free_list); + + /* Recycle the iTDs when the pipeline is empty (ep no longer in use) */ + if (list_empty(&stream->td_list)) { + list_splice_tail_init(&stream->free_list, + &fusbh200->cached_itd_list); + start_free_itds(fusbh200); + } + + return retval; +} + +/*-------------------------------------------------------------------------*/ + +static int itd_submit (struct fusbh200_hcd *fusbh200, struct urb *urb, + gfp_t mem_flags) +{ + int status = -EINVAL; + unsigned long flags; + struct fusbh200_iso_stream *stream; + + /* Get iso_stream head */ + stream = iso_stream_find (fusbh200, urb); + if (unlikely (stream == NULL)) { + fusbh200_dbg (fusbh200, "can't get iso stream\n"); + return -ENOMEM; + } + if (unlikely (urb->interval != stream->interval && + fusbh200_port_speed(fusbh200, 0) == USB_PORT_STAT_HIGH_SPEED)) { + fusbh200_dbg (fusbh200, "can't change iso interval %d --> %d\n", + stream->interval, urb->interval); + goto done; + } + +#ifdef FUSBH200_URB_TRACE + fusbh200_dbg (fusbh200, + "%s %s urb %p ep%d%s len %d, %d pkts %d uframes [%p]\n", + __func__, urb->dev->devpath, urb, + usb_pipeendpoint (urb->pipe), + usb_pipein (urb->pipe) ? "in" : "out", + urb->transfer_buffer_length, + urb->number_of_packets, urb->interval, + stream); +#endif + + /* allocate ITDs w/o locking anything */ + status = itd_urb_transaction (stream, fusbh200, urb, mem_flags); + if (unlikely (status < 0)) { + fusbh200_dbg (fusbh200, "can't init itds\n"); + goto done; + } + + /* schedule ... need to lock */ + spin_lock_irqsave (&fusbh200->lock, flags); + if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) { + status = -ESHUTDOWN; + goto done_not_linked; + } + status = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb); + if (unlikely(status)) + goto done_not_linked; + status = iso_stream_schedule(fusbh200, urb, stream); + if (likely (status == 0)) + itd_link_urb (fusbh200, urb, fusbh200->periodic_size << 3, stream); + else + usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb); + done_not_linked: + spin_unlock_irqrestore (&fusbh200->lock, flags); + done: + return status; +} + +/*-------------------------------------------------------------------------*/ + +static void scan_isoc(struct fusbh200_hcd *fusbh200) +{ + unsigned uf, now_frame, frame; + unsigned fmask = fusbh200->periodic_size - 1; + bool modified, live; + + /* + * When running, scan from last scan point up to "now" + * else clean up by scanning everything that's left. + * Touches as few pages as possible: cache-friendly. + */ + if (fusbh200->rh_state >= FUSBH200_RH_RUNNING) { + uf = fusbh200_read_frame_index(fusbh200); + now_frame = (uf >> 3) & fmask; + live = true; + } else { + now_frame = (fusbh200->next_frame - 1) & fmask; + live = false; + } + fusbh200->now_frame = now_frame; + + frame = fusbh200->next_frame; + for (;;) { + union fusbh200_shadow q, *q_p; + __hc32 type, *hw_p; + +restart: + /* scan each element in frame's queue for completions */ + q_p = &fusbh200->pshadow [frame]; + hw_p = &fusbh200->periodic [frame]; + q.ptr = q_p->ptr; + type = Q_NEXT_TYPE(fusbh200, *hw_p); + modified = false; + + while (q.ptr != NULL) { + switch (hc32_to_cpu(fusbh200, type)) { + case Q_TYPE_ITD: + /* If this ITD is still active, leave it for + * later processing ... check the next entry. + * No need to check for activity unless the + * frame is current. + */ + if (frame == now_frame && live) { + rmb(); + for (uf = 0; uf < 8; uf++) { + if (q.itd->hw_transaction[uf] & + ITD_ACTIVE(fusbh200)) + break; + } + if (uf < 8) { + q_p = &q.itd->itd_next; + hw_p = &q.itd->hw_next; + type = Q_NEXT_TYPE(fusbh200, + q.itd->hw_next); + q = *q_p; + break; + } + } + + /* Take finished ITDs out of the schedule + * and process them: recycle, maybe report + * URB completion. HC won't cache the + * pointer for much longer, if at all. + */ + *q_p = q.itd->itd_next; + *hw_p = q.itd->hw_next; + type = Q_NEXT_TYPE(fusbh200, q.itd->hw_next); + wmb(); + modified = itd_complete (fusbh200, q.itd); + q = *q_p; + break; + default: + fusbh200_dbg(fusbh200, "corrupt type %d frame %d shadow %p\n", + type, frame, q.ptr); + // BUG (); + /* FALL THROUGH */ + case Q_TYPE_QH: + case Q_TYPE_FSTN: + /* End of the iTDs and siTDs */ + q.ptr = NULL; + break; + } + + /* assume completion callbacks modify the queue */ + if (unlikely(modified && fusbh200->isoc_count > 0)) + goto restart; + } + + /* Stop when we have reached the current frame */ + if (frame == now_frame) + break; + frame = (frame + 1) & fmask; + } + fusbh200->next_frame = now_frame; +} +/*-------------------------------------------------------------------------*/ +/* + * Display / Set uframe_periodic_max + */ +static ssize_t show_uframe_periodic_max(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct fusbh200_hcd *fusbh200; + int n; + + fusbh200 = hcd_to_fusbh200(bus_to_hcd(dev_get_drvdata(dev))); + n = scnprintf(buf, PAGE_SIZE, "%d\n", fusbh200->uframe_periodic_max); + return n; +} + + +static ssize_t store_uframe_periodic_max(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fusbh200_hcd *fusbh200; + unsigned uframe_periodic_max; + unsigned frame, uframe; + unsigned short allocated_max; + unsigned long flags; + ssize_t ret; + + fusbh200 = hcd_to_fusbh200(bus_to_hcd(dev_get_drvdata(dev))); + if (kstrtouint(buf, 0, &uframe_periodic_max) < 0) + return -EINVAL; + + if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) { + fusbh200_info(fusbh200, "rejecting invalid request for " + "uframe_periodic_max=%u\n", uframe_periodic_max); + return -EINVAL; + } + + ret = -EINVAL; + + /* + * lock, so that our checking does not race with possible periodic + * bandwidth allocation through submitting new urbs. + */ + spin_lock_irqsave (&fusbh200->lock, flags); + + /* + * for request to decrease max periodic bandwidth, we have to check + * every microframe in the schedule to see whether the decrease is + * possible. + */ + if (uframe_periodic_max < fusbh200->uframe_periodic_max) { + allocated_max = 0; + + for (frame = 0; frame < fusbh200->periodic_size; ++frame) + for (uframe = 0; uframe < 7; ++uframe) + allocated_max = max(allocated_max, + periodic_usecs (fusbh200, frame, uframe)); + + if (allocated_max > uframe_periodic_max) { + fusbh200_info(fusbh200, + "cannot decrease uframe_periodic_max becase " + "periodic bandwidth is already allocated " + "(%u > %u)\n", + allocated_max, uframe_periodic_max); + goto out_unlock; + } + } + + /* increasing is always ok */ + + fusbh200_info(fusbh200, "setting max periodic bandwidth to %u%% " + "(== %u usec/uframe)\n", + 100*uframe_periodic_max/125, uframe_periodic_max); + + if (uframe_periodic_max != 100) + fusbh200_warn(fusbh200, "max periodic bandwidth set is non-standard\n"); + + fusbh200->uframe_periodic_max = uframe_periodic_max; + ret = count; + +out_unlock: + spin_unlock_irqrestore (&fusbh200->lock, flags); + return ret; +} +static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max, store_uframe_periodic_max); + + +static inline int create_sysfs_files(struct fusbh200_hcd *fusbh200) +{ + struct device *controller = fusbh200_to_hcd(fusbh200)->self.controller; + int i = 0; + + if (i) + goto out; + + i = device_create_file(controller, &dev_attr_uframe_periodic_max); +out: + return i; +} + +static inline void remove_sysfs_files(struct fusbh200_hcd *fusbh200) +{ + struct device *controller = fusbh200_to_hcd(fusbh200)->self.controller; + + device_remove_file(controller, &dev_attr_uframe_periodic_max); +} +/*-------------------------------------------------------------------------*/ + +/* On some systems, leaving remote wakeup enabled prevents system shutdown. + * The firmware seems to think that powering off is a wakeup event! + * This routine turns off remote wakeup and everything else, on all ports. + */ +static void fusbh200_turn_off_all_ports(struct fusbh200_hcd *fusbh200) +{ + u32 __iomem *status_reg = &fusbh200->regs->port_status; + + fusbh200_writel(fusbh200, PORT_RWC_BITS, status_reg); +} + +/* + * Halt HC, turn off all ports, and let the BIOS use the companion controllers. + * Must be called with interrupts enabled and the lock not held. + */ +static void fusbh200_silence_controller(struct fusbh200_hcd *fusbh200) +{ + fusbh200_halt(fusbh200); + + spin_lock_irq(&fusbh200->lock); + fusbh200->rh_state = FUSBH200_RH_HALTED; + fusbh200_turn_off_all_ports(fusbh200); + spin_unlock_irq(&fusbh200->lock); +} + +/* fusbh200_shutdown kick in for silicon on any bus (not just pci, etc). + * This forcibly disables dma and IRQs, helping kexec and other cases + * where the next system software may expect clean state. + */ +static void fusbh200_shutdown(struct usb_hcd *hcd) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd); + + spin_lock_irq(&fusbh200->lock); + fusbh200->shutdown = true; + fusbh200->rh_state = FUSBH200_RH_STOPPING; + fusbh200->enabled_hrtimer_events = 0; + spin_unlock_irq(&fusbh200->lock); + + fusbh200_silence_controller(fusbh200); + + hrtimer_cancel(&fusbh200->hrtimer); +} + +/*-------------------------------------------------------------------------*/ + +/* + * fusbh200_work is called from some interrupts, timers, and so on. + * it calls driver completion functions, after dropping fusbh200->lock. + */ +static void fusbh200_work (struct fusbh200_hcd *fusbh200) +{ + /* another CPU may drop fusbh200->lock during a schedule scan while + * it reports urb completions. this flag guards against bogus + * attempts at re-entrant schedule scanning. + */ + if (fusbh200->scanning) { + fusbh200->need_rescan = true; + return; + } + fusbh200->scanning = true; + + rescan: + fusbh200->need_rescan = false; + if (fusbh200->async_count) + scan_async(fusbh200); + if (fusbh200->intr_count > 0) + scan_intr(fusbh200); + if (fusbh200->isoc_count > 0) + scan_isoc(fusbh200); + if (fusbh200->need_rescan) + goto rescan; + fusbh200->scanning = false; + + /* the IO watchdog guards against hardware or driver bugs that + * misplace IRQs, and should let us run completely without IRQs. + * such lossage has been observed on both VT6202 and VT8235. + */ + turn_on_io_watchdog(fusbh200); +} + +/* + * Called when the fusbh200_hcd module is removed. + */ +static void fusbh200_stop (struct usb_hcd *hcd) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd); + + fusbh200_dbg (fusbh200, "stop\n"); + + /* no more interrupts ... */ + + spin_lock_irq(&fusbh200->lock); + fusbh200->enabled_hrtimer_events = 0; + spin_unlock_irq(&fusbh200->lock); + + fusbh200_quiesce(fusbh200); + fusbh200_silence_controller(fusbh200); + fusbh200_reset (fusbh200); + + hrtimer_cancel(&fusbh200->hrtimer); + remove_sysfs_files(fusbh200); + remove_debug_files (fusbh200); + + /* root hub is shut down separately (first, when possible) */ + spin_lock_irq (&fusbh200->lock); + end_free_itds(fusbh200); + spin_unlock_irq (&fusbh200->lock); + fusbh200_mem_cleanup (fusbh200); + +#ifdef FUSBH200_STATS + fusbh200_dbg(fusbh200, "irq normal %ld err %ld iaa %ld (lost %ld)\n", + fusbh200->stats.normal, fusbh200->stats.error, fusbh200->stats.iaa, + fusbh200->stats.lost_iaa); + fusbh200_dbg (fusbh200, "complete %ld unlink %ld\n", + fusbh200->stats.complete, fusbh200->stats.unlink); +#endif + + dbg_status (fusbh200, "fusbh200_stop completed", + fusbh200_readl(fusbh200, &fusbh200->regs->status)); +} + +/* one-time init, only for memory state */ +static int hcd_fusbh200_init(struct usb_hcd *hcd) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd); + u32 temp; + int retval; + u32 hcc_params; + struct fusbh200_qh_hw *hw; + + spin_lock_init(&fusbh200->lock); + + /* + * keep io watchdog by default, those good HCDs could turn off it later + */ + fusbh200->need_io_watchdog = 1; + + hrtimer_init(&fusbh200->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + fusbh200->hrtimer.function = fusbh200_hrtimer_func; + fusbh200->next_hrtimer_event = FUSBH200_HRTIMER_NO_EVENT; + + hcc_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params); + + /* + * by default set standard 80% (== 100 usec/uframe) max periodic + * bandwidth as required by USB 2.0 + */ + fusbh200->uframe_periodic_max = 100; + + /* + * hw default: 1K periodic list heads, one per frame. + * periodic_size can shrink by USBCMD update if hcc_params allows. + */ + fusbh200->periodic_size = DEFAULT_I_TDPS; + INIT_LIST_HEAD(&fusbh200->intr_qh_list); + INIT_LIST_HEAD(&fusbh200->cached_itd_list); + + if (HCC_PGM_FRAMELISTLEN(hcc_params)) { + /* periodic schedule size can be smaller than default */ + switch (FUSBH200_TUNE_FLS) { + case 0: fusbh200->periodic_size = 1024; break; + case 1: fusbh200->periodic_size = 512; break; + case 2: fusbh200->periodic_size = 256; break; + default: BUG(); + } + } + if ((retval = fusbh200_mem_init(fusbh200, GFP_KERNEL)) < 0) + return retval; + + /* controllers may cache some of the periodic schedule ... */ + fusbh200->i_thresh = 2; + + /* + * dedicate a qh for the async ring head, since we couldn't unlink + * a 'real' qh without stopping the async schedule [4.8]. use it + * as the 'reclamation list head' too. + * its dummy is used in hw_alt_next of many tds, to prevent the qh + * from automatically advancing to the next td after short reads. + */ + fusbh200->async->qh_next.qh = NULL; + hw = fusbh200->async->hw; + hw->hw_next = QH_NEXT(fusbh200, fusbh200->async->qh_dma); + hw->hw_info1 = cpu_to_hc32(fusbh200, QH_HEAD); + hw->hw_token = cpu_to_hc32(fusbh200, QTD_STS_HALT); + hw->hw_qtd_next = FUSBH200_LIST_END(fusbh200); + fusbh200->async->qh_state = QH_STATE_LINKED; + hw->hw_alt_next = QTD_NEXT(fusbh200, fusbh200->async->dummy->qtd_dma); + + /* clear interrupt enables, set irq latency */ + if (log2_irq_thresh < 0 || log2_irq_thresh > 6) + log2_irq_thresh = 0; + temp = 1 << (16 + log2_irq_thresh); + if (HCC_CANPARK(hcc_params)) { + /* HW default park == 3, on hardware that supports it (like + * NVidia and ALI silicon), maximizes throughput on the async + * schedule by avoiding QH fetches between transfers. + * + * With fast usb storage devices and NForce2, "park" seems to + * make problems: throughput reduction (!), data errors... + */ + if (park) { + park = min(park, (unsigned) 3); + temp |= CMD_PARK; + temp |= park << 8; + } + fusbh200_dbg(fusbh200, "park %d\n", park); + } + if (HCC_PGM_FRAMELISTLEN(hcc_params)) { + /* periodic schedule size can be smaller than default */ + temp &= ~(3 << 2); + temp |= (FUSBH200_TUNE_FLS << 2); + } + fusbh200->command = temp; + + /* Accept arbitrarily long scatter-gather lists */ + if (!(hcd->driver->flags & HCD_LOCAL_MEM)) + hcd->self.sg_tablesize = ~0; + return 0; +} + +/* start HC running; it's halted, hcd_fusbh200_init() has been run (once) */ +static int fusbh200_run (struct usb_hcd *hcd) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd); + u32 temp; + u32 hcc_params; + + hcd->uses_new_polling = 1; + + /* EHCI spec section 4.1 */ + + fusbh200_writel(fusbh200, fusbh200->periodic_dma, &fusbh200->regs->frame_list); + fusbh200_writel(fusbh200, (u32)fusbh200->async->qh_dma, &fusbh200->regs->async_next); + + /* + * hcc_params controls whether fusbh200->regs->segment must (!!!) + * be used; it constrains QH/ITD/SITD and QTD locations. + * pci_pool consistent memory always uses segment zero. + * streaming mappings for I/O buffers, like pci_map_single(), + * can return segments above 4GB, if the device allows. + * + * NOTE: the dma mask is visible through dma_supported(), so + * drivers can pass this info along ... like NETIF_F_HIGHDMA, + * Scsi_Host.highmem_io, and so forth. It's readonly to all + * host side drivers though. + */ + hcc_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params); + + // Philips, Intel, and maybe others need CMD_RUN before the + // root hub will detect new devices (why?); NEC doesn't + fusbh200->command &= ~(CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET); + fusbh200->command |= CMD_RUN; + fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command); + dbg_cmd (fusbh200, "init", fusbh200->command); + + /* + * Start, enabling full USB 2.0 functionality ... usb 1.1 devices + * are explicitly handed to companion controller(s), so no TT is + * involved with the root hub. (Except where one is integrated, + * and there's no companion controller unless maybe for USB OTG.) + * + * Turning on the CF flag will transfer ownership of all ports + * from the companions to the EHCI controller. If any of the + * companions are in the middle of a port reset at the time, it + * could cause trouble. Write-locking ehci_cf_port_reset_rwsem + * guarantees that no resets are in progress. After we set CF, + * a short delay lets the hardware catch up; new resets shouldn't + * be started before the port switching actions could complete. + */ + down_write(&ehci_cf_port_reset_rwsem); + fusbh200->rh_state = FUSBH200_RH_RUNNING; + fusbh200_readl(fusbh200, &fusbh200->regs->command); /* unblock posted writes */ + msleep(5); + up_write(&ehci_cf_port_reset_rwsem); + fusbh200->last_periodic_enable = ktime_get_real(); + + temp = HC_VERSION(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase)); + fusbh200_info (fusbh200, + "USB %x.%x started, EHCI %x.%02x\n", + ((fusbh200->sbrn & 0xf0)>>4), (fusbh200->sbrn & 0x0f), + temp >> 8, temp & 0xff); + + fusbh200_writel(fusbh200, INTR_MASK, + &fusbh200->regs->intr_enable); /* Turn On Interrupts */ + + /* GRR this is run-once init(), being done every time the HC starts. + * So long as they're part of class devices, we can't do it init() + * since the class device isn't created that early. + */ + create_debug_files(fusbh200); + create_sysfs_files(fusbh200); + + return 0; +} + +static int fusbh200_setup(struct usb_hcd *hcd) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd); + int retval; + + fusbh200->regs = (void __iomem *)fusbh200->caps + + HC_LENGTH(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase)); + dbg_hcs_params(fusbh200, "reset"); + dbg_hcc_params(fusbh200, "reset"); + + /* cache this readonly data; minimize chip reads */ + fusbh200->hcs_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params); + + fusbh200->sbrn = HCD_USB2; + + /* data structure init */ + retval = hcd_fusbh200_init(hcd); + if (retval) + return retval; + + retval = fusbh200_halt(fusbh200); + if (retval) + return retval; + + fusbh200_reset(fusbh200); + + return 0; +} + +/*-------------------------------------------------------------------------*/ + +static irqreturn_t fusbh200_irq (struct usb_hcd *hcd) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd); + u32 status, masked_status, pcd_status = 0, cmd; + int bh; + + spin_lock (&fusbh200->lock); + + status = fusbh200_readl(fusbh200, &fusbh200->regs->status); + + /* e.g. cardbus physical eject */ + if (status == ~(u32) 0) { + fusbh200_dbg (fusbh200, "device removed\n"); + goto dead; + } + + /* + * We don't use STS_FLR, but some controllers don't like it to + * remain on, so mask it out along with the other status bits. + */ + masked_status = status & (INTR_MASK | STS_FLR); + + /* Shared IRQ? */ + if (!masked_status || unlikely(fusbh200->rh_state == FUSBH200_RH_HALTED)) { + spin_unlock(&fusbh200->lock); + return IRQ_NONE; + } + + /* clear (just) interrupts */ + fusbh200_writel(fusbh200, masked_status, &fusbh200->regs->status); + cmd = fusbh200_readl(fusbh200, &fusbh200->regs->command); + bh = 0; + +#ifdef VERBOSE_DEBUG + /* unrequested/ignored: Frame List Rollover */ + dbg_status (fusbh200, "irq", status); +#endif + + /* INT, ERR, and IAA interrupt rates can be throttled */ + + /* normal [4.15.1.2] or error [4.15.1.1] completion */ + if (likely ((status & (STS_INT|STS_ERR)) != 0)) { + if (likely ((status & STS_ERR) == 0)) + COUNT (fusbh200->stats.normal); + else + COUNT (fusbh200->stats.error); + bh = 1; + } + + /* complete the unlinking of some qh [4.15.2.3] */ + if (status & STS_IAA) { + + /* Turn off the IAA watchdog */ + fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_IAA_WATCHDOG); + + /* + * Mild optimization: Allow another IAAD to reset the + * hrtimer, if one occurs before the next expiration. + * In theory we could always cancel the hrtimer, but + * tests show that about half the time it will be reset + * for some other event anyway. + */ + if (fusbh200->next_hrtimer_event == FUSBH200_HRTIMER_IAA_WATCHDOG) + ++fusbh200->next_hrtimer_event; + + /* guard against (alleged) silicon errata */ + if (cmd & CMD_IAAD) + fusbh200_dbg(fusbh200, "IAA with IAAD still set?\n"); + if (fusbh200->async_iaa) { + COUNT(fusbh200->stats.iaa); + end_unlink_async(fusbh200); + } else + fusbh200_dbg(fusbh200, "IAA with nothing unlinked?\n"); + } + + /* remote wakeup [4.3.1] */ + if (status & STS_PCD) { + int pstatus; + u32 __iomem *status_reg = &fusbh200->regs->port_status; + + /* kick root hub later */ + pcd_status = status; + + /* resume root hub? */ + if (fusbh200->rh_state == FUSBH200_RH_SUSPENDED) + usb_hcd_resume_root_hub(hcd); + + pstatus = fusbh200_readl(fusbh200, status_reg); + + if (test_bit(0, &fusbh200->suspended_ports) && + ((pstatus & PORT_RESUME) || + !(pstatus & PORT_SUSPEND)) && + (pstatus & PORT_PE) && + fusbh200->reset_done[0] == 0) { + + /* start 20 msec resume signaling from this port, + * and make khubd collect PORT_STAT_C_SUSPEND to + * stop that signaling. Use 5 ms extra for safety, + * like usb_port_resume() does. + */ + fusbh200->reset_done[0] = jiffies + msecs_to_jiffies(25); + set_bit(0, &fusbh200->resuming_ports); + fusbh200_dbg (fusbh200, "port 1 remote wakeup\n"); + mod_timer(&hcd->rh_timer, fusbh200->reset_done[0]); + } + } + + /* PCI errors [4.15.2.4] */ + if (unlikely ((status & STS_FATAL) != 0)) { + fusbh200_err(fusbh200, "fatal error\n"); + dbg_cmd(fusbh200, "fatal", cmd); + dbg_status(fusbh200, "fatal", status); +dead: + usb_hc_died(hcd); + + /* Don't let the controller do anything more */ + fusbh200->shutdown = true; + fusbh200->rh_state = FUSBH200_RH_STOPPING; + fusbh200->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE); + fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command); + fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable); + fusbh200_handle_controller_death(fusbh200); + + /* Handle completions when the controller stops */ + bh = 0; + } + + if (bh) + fusbh200_work (fusbh200); + spin_unlock (&fusbh200->lock); + if (pcd_status) + usb_hcd_poll_rh_status(hcd); + return IRQ_HANDLED; +} + +/*-------------------------------------------------------------------------*/ + +/* + * non-error returns are a promise to giveback() the urb later + * we drop ownership so next owner (or urb unlink) can get it + * + * urb + dev is in hcd.self.controller.urb_list + * we're queueing TDs onto software and hardware lists + * + * hcd-specific init for hcpriv hasn't been done yet + * + * NOTE: control, bulk, and interrupt share the same code to append TDs + * to a (possibly active) QH, and the same QH scanning code. + */ +static int fusbh200_urb_enqueue ( + struct usb_hcd *hcd, + struct urb *urb, + gfp_t mem_flags +) { + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd); + struct list_head qtd_list; + + INIT_LIST_HEAD (&qtd_list); + + switch (usb_pipetype (urb->pipe)) { + case PIPE_CONTROL: + /* qh_completions() code doesn't handle all the fault cases + * in multi-TD control transfers. Even 1KB is rare anyway. + */ + if (urb->transfer_buffer_length > (16 * 1024)) + return -EMSGSIZE; + /* FALLTHROUGH */ + /* case PIPE_BULK: */ + default: + if (!qh_urb_transaction (fusbh200, urb, &qtd_list, mem_flags)) + return -ENOMEM; + return submit_async(fusbh200, urb, &qtd_list, mem_flags); + + case PIPE_INTERRUPT: + if (!qh_urb_transaction (fusbh200, urb, &qtd_list, mem_flags)) + return -ENOMEM; + return intr_submit(fusbh200, urb, &qtd_list, mem_flags); + + case PIPE_ISOCHRONOUS: + return itd_submit (fusbh200, urb, mem_flags); + } +} + +/* remove from hardware lists + * completions normally happen asynchronously + */ + +static int fusbh200_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd); + struct fusbh200_qh *qh; + unsigned long flags; + int rc; + + spin_lock_irqsave (&fusbh200->lock, flags); + rc = usb_hcd_check_unlink_urb(hcd, urb, status); + if (rc) + goto done; + + switch (usb_pipetype (urb->pipe)) { + // case PIPE_CONTROL: + // case PIPE_BULK: + default: + qh = (struct fusbh200_qh *) urb->hcpriv; + if (!qh) + break; + switch (qh->qh_state) { + case QH_STATE_LINKED: + case QH_STATE_COMPLETING: + start_unlink_async(fusbh200, qh); + break; + case QH_STATE_UNLINK: + case QH_STATE_UNLINK_WAIT: + /* already started */ + break; + case QH_STATE_IDLE: + /* QH might be waiting for a Clear-TT-Buffer */ + qh_completions(fusbh200, qh); + break; + } + break; + + case PIPE_INTERRUPT: + qh = (struct fusbh200_qh *) urb->hcpriv; + if (!qh) + break; + switch (qh->qh_state) { + case QH_STATE_LINKED: + case QH_STATE_COMPLETING: + start_unlink_intr(fusbh200, qh); + break; + case QH_STATE_IDLE: + qh_completions (fusbh200, qh); + break; + default: + fusbh200_dbg (fusbh200, "bogus qh %p state %d\n", + qh, qh->qh_state); + goto done; + } + break; + + case PIPE_ISOCHRONOUS: + // itd... + + // wait till next completion, do it then. + // completion irqs can wait up to 1024 msec, + break; + } +done: + spin_unlock_irqrestore (&fusbh200->lock, flags); + return rc; +} + +/*-------------------------------------------------------------------------*/ + +// bulk qh holds the data toggle + +static void +fusbh200_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd); + unsigned long flags; + struct fusbh200_qh *qh, *tmp; + + /* ASSERT: any requests/urbs are being unlinked */ + /* ASSERT: nobody can be submitting urbs for this any more */ + +rescan: + spin_lock_irqsave (&fusbh200->lock, flags); + qh = ep->hcpriv; + if (!qh) + goto done; + + /* endpoints can be iso streams. for now, we don't + * accelerate iso completions ... so spin a while. + */ + if (qh->hw == NULL) { + struct fusbh200_iso_stream *stream = ep->hcpriv; + + if (!list_empty(&stream->td_list)) + goto idle_timeout; + + /* BUG_ON(!list_empty(&stream->free_list)); */ + kfree(stream); + goto done; + } + + if (fusbh200->rh_state < FUSBH200_RH_RUNNING) + qh->qh_state = QH_STATE_IDLE; + switch (qh->qh_state) { + case QH_STATE_LINKED: + case QH_STATE_COMPLETING: + for (tmp = fusbh200->async->qh_next.qh; + tmp && tmp != qh; + tmp = tmp->qh_next.qh) + continue; + /* periodic qh self-unlinks on empty, and a COMPLETING qh + * may already be unlinked. + */ + if (tmp) + start_unlink_async(fusbh200, qh); + /* FALL THROUGH */ + case QH_STATE_UNLINK: /* wait for hw to finish? */ + case QH_STATE_UNLINK_WAIT: +idle_timeout: + spin_unlock_irqrestore (&fusbh200->lock, flags); + schedule_timeout_uninterruptible(1); + goto rescan; + case QH_STATE_IDLE: /* fully unlinked */ + if (qh->clearing_tt) + goto idle_timeout; + if (list_empty (&qh->qtd_list)) { + qh_destroy(fusbh200, qh); + break; + } + /* else FALL THROUGH */ + default: + /* caller was supposed to have unlinked any requests; + * that's not our job. just leak this memory. + */ + fusbh200_err (fusbh200, "qh %p (#%02x) state %d%s\n", + qh, ep->desc.bEndpointAddress, qh->qh_state, + list_empty (&qh->qtd_list) ? "" : "(has tds)"); + break; + } + done: + ep->hcpriv = NULL; + spin_unlock_irqrestore (&fusbh200->lock, flags); +} + +static void +fusbh200_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd); + struct fusbh200_qh *qh; + int eptype = usb_endpoint_type(&ep->desc); + int epnum = usb_endpoint_num(&ep->desc); + int is_out = usb_endpoint_dir_out(&ep->desc); + unsigned long flags; + + if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT) + return; + + spin_lock_irqsave(&fusbh200->lock, flags); + qh = ep->hcpriv; + + /* For Bulk and Interrupt endpoints we maintain the toggle state + * in the hardware; the toggle bits in udev aren't used at all. + * When an endpoint is reset by usb_clear_halt() we must reset + * the toggle bit in the QH. + */ + if (qh) { + usb_settoggle(qh->dev, epnum, is_out, 0); + if (!list_empty(&qh->qtd_list)) { + WARN_ONCE(1, "clear_halt for a busy endpoint\n"); + } else if (qh->qh_state == QH_STATE_LINKED || + qh->qh_state == QH_STATE_COMPLETING) { + + /* The toggle value in the QH can't be updated + * while the QH is active. Unlink it now; + * re-linking will call qh_refresh(). + */ + if (eptype == USB_ENDPOINT_XFER_BULK) + start_unlink_async(fusbh200, qh); + else + start_unlink_intr(fusbh200, qh); + } + } + spin_unlock_irqrestore(&fusbh200->lock, flags); +} + +static int fusbh200_get_frame (struct usb_hcd *hcd) +{ + struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd); + return (fusbh200_read_frame_index(fusbh200) >> 3) % fusbh200->periodic_size; +} + +/*-------------------------------------------------------------------------*/ + +/* + * The EHCI in ChipIdea HDRC cannot be a separate module or device, + * because its registers (and irq) are shared between host/gadget/otg + * functions and in order to facilitate role switching we cannot + * give the fusbh200 driver exclusive access to those. + */ +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR (DRIVER_AUTHOR); +MODULE_LICENSE ("GPL"); + +static const struct hc_driver fusbh200_fusbh200_hc_driver = { + .description = hcd_name, + .product_desc = "Faraday USB2.0 Host Controller", + .hcd_priv_size = sizeof(struct fusbh200_hcd), + + /* + * generic hardware linkage + */ + .irq = fusbh200_irq, + .flags = HCD_MEMORY | HCD_USB2, + + /* + * basic lifecycle operations + */ + .reset = hcd_fusbh200_init, + .start = fusbh200_run, + .stop = fusbh200_stop, + .shutdown = fusbh200_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = fusbh200_urb_enqueue, + .urb_dequeue = fusbh200_urb_dequeue, + .endpoint_disable = fusbh200_endpoint_disable, + .endpoint_reset = fusbh200_endpoint_reset, + + /* + * scheduling support + */ + .get_frame_number = fusbh200_get_frame, + + /* + * root hub support + */ + .hub_status_data = fusbh200_hub_status_data, + .hub_control = fusbh200_hub_control, + .bus_suspend = fusbh200_bus_suspend, + .bus_resume = fusbh200_bus_resume, + + .relinquish_port = fusbh200_relinquish_port, + .port_handed_over = fusbh200_port_handed_over, + + .clear_tt_buffer_complete = fusbh200_clear_tt_buffer_complete, +}; + +static void fusbh200_init(struct fusbh200_hcd *fusbh200) +{ + u32 reg; + + reg = fusbh200_readl(fusbh200, &fusbh200->regs->bmcsr); + reg |= BMCSR_INT_POLARITY; + reg &= ~BMCSR_VBUS_OFF; + fusbh200_writel(fusbh200, reg, &fusbh200->regs->bmcsr); + + reg = fusbh200_readl(fusbh200, &fusbh200->regs->bmier); + fusbh200_writel(fusbh200, reg | BMIER_OVC_EN | BMIER_VBUS_ERR_EN, + &fusbh200->regs->bmier); +} + +/** + * fusbh200_hcd_probe - initialize faraday FUSBH200 HCDs + * + * Allocates basic resources for this USB host controller, and + * then invokes the start() method for the HCD associated with it + * through the hotplug entry's driver_data. + */ +static int fusbh200_hcd_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct usb_hcd *hcd; + struct resource *res; + int irq; + int retval = -ENODEV; + struct fusbh200_hcd *fusbh200; + + if (usb_disabled()) + return -ENODEV; + + pdev->dev.power.power_state = PMSG_ON; + + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_err(dev, + "Found HC with no IRQ. Check %s setup!\n", + dev_name(dev)); + return -ENODEV; + } + + irq = res->start; + + hcd = usb_create_hcd(&fusbh200_fusbh200_hc_driver, dev, + dev_name(dev)); + if (!hcd) { + dev_err(dev, "failed to create hcd with err %d\n", retval); + retval = -ENOMEM; + goto fail_create_hcd; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, + "Found HC with no register addr. Check %s setup!\n", + dev_name(dev)); + retval = -ENODEV; + goto fail_request_resource; + } + + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + hcd->has_tt = 1; + + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, + fusbh200_fusbh200_hc_driver.description)) { + dev_dbg(dev, "controller already in use\n"); + retval = -EBUSY; + goto fail_request_resource; + } + + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (!res) { + dev_err(dev, + "Found HC with no register addr. Check %s setup!\n", + dev_name(dev)); + retval = -ENODEV; + goto fail_request_resource; + } + + hcd->regs = ioremap_nocache(res->start, resource_size(res)); + if (hcd->regs == NULL) { + dev_dbg(dev, "error mapping memory\n"); + retval = -EFAULT; + goto fail_ioremap; + } + + fusbh200 = hcd_to_fusbh200(hcd); + + fusbh200->caps = hcd->regs; + + retval = fusbh200_setup(hcd); + if (retval) + goto fail_add_hcd; + + fusbh200_init(fusbh200); + + retval = usb_add_hcd(hcd, irq, IRQF_SHARED); + if (retval) { + dev_err(dev, "failed to add hcd with err %d\n", retval); + goto fail_add_hcd; + } + + return retval; + +fail_add_hcd: + iounmap(hcd->regs); +fail_ioremap: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +fail_request_resource: + usb_put_hcd(hcd); +fail_create_hcd: + dev_err(dev, "init %s fail, %d\n", dev_name(dev), retval); + return retval; +} + +/** + * fusbh200_hcd_remove - shutdown processing for EHCI HCDs + * @dev: USB Host Controller being removed + * + * Reverses the effect of fotg2xx_usb_hcd_probe(), first invoking + * the HCD's stop() method. It is always called from a thread + * context, normally "rmmod", "apmd", or something similar. + */ +static int fusbh200_hcd_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct usb_hcd *hcd = dev_get_drvdata(dev); + + if (!hcd) + return 0; + + usb_remove_hcd(hcd); + iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + usb_put_hcd(hcd); + + return 0; +} + +static struct platform_driver fusbh200_hcd_fusbh200_driver = { + .driver = { + .name = "fusbh200", + }, + .probe = fusbh200_hcd_probe, + .remove = fusbh200_hcd_remove, +}; + +static int __init fusbh200_hcd_init(void) +{ + int retval = 0; + + if (usb_disabled()) + return -ENODEV; + + printk(KERN_INFO "%s: " DRIVER_DESC "\n", hcd_name); + set_bit(USB_EHCI_LOADED, &usb_hcds_loaded); + if (test_bit(USB_UHCI_LOADED, &usb_hcds_loaded) || + test_bit(USB_OHCI_LOADED, &usb_hcds_loaded)) + printk(KERN_WARNING "Warning! fusbh200_hcd should always be loaded" + " before uhci_hcd and ohci_hcd, not after\n"); + + pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd\n", + hcd_name, + sizeof(struct fusbh200_qh), sizeof(struct fusbh200_qtd), + sizeof(struct fusbh200_itd)); + +#ifdef DEBUG + fusbh200_debug_root = debugfs_create_dir("fusbh200", usb_debug_root); + if (!fusbh200_debug_root) { + retval = -ENOENT; + goto err_debug; + } +#endif + + retval = platform_driver_register(&fusbh200_hcd_fusbh200_driver); + if (retval < 0) + goto clean; + return retval; + + platform_driver_unregister(&fusbh200_hcd_fusbh200_driver); +clean: +#ifdef DEBUG + debugfs_remove(fusbh200_debug_root); + fusbh200_debug_root = NULL; +err_debug: +#endif + clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded); + return retval; +} +module_init(fusbh200_hcd_init); + +static void __exit fusbh200_hcd_cleanup(void) +{ + platform_driver_unregister(&fusbh200_hcd_fusbh200_driver); +#ifdef DEBUG + debugfs_remove(fusbh200_debug_root); +#endif + clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded); +} +module_exit(fusbh200_hcd_cleanup); diff --git a/drivers/usb/host/fusbh200.h b/drivers/usb/host/fusbh200.h new file mode 100644 index 000000000000..797c9e855270 --- /dev/null +++ b/drivers/usb/host/fusbh200.h @@ -0,0 +1,743 @@ +#ifndef __LINUX_FUSBH200_H +#define __LINUX_FUSBH200_H + +/* definitions used for the EHCI driver */ + +/* + * __hc32 and __hc16 are "Host Controller" types, they may be equivalent to + * __leXX (normally) or __beXX (given FUSBH200_BIG_ENDIAN_DESC), depending on + * the host controller implementation. + * + * To facilitate the strongest possible byte-order checking from "sparse" + * and so on, we use __leXX unless that's not practical. + */ +#define __hc32 __le32 +#define __hc16 __le16 + +/* statistics can be kept for tuning/monitoring */ +struct fusbh200_stats { + /* irq usage */ + unsigned long normal; + unsigned long error; + unsigned long iaa; + unsigned long lost_iaa; + + /* termination of urbs from core */ + unsigned long complete; + unsigned long unlink; +}; + +/* fusbh200_hcd->lock guards shared data against other CPUs: + * fusbh200_hcd: async, unlink, periodic (and shadow), ... + * usb_host_endpoint: hcpriv + * fusbh200_qh: qh_next, qtd_list + * fusbh200_qtd: qtd_list + * + * Also, hold this lock when talking to HC registers or + * when updating hw_* fields in shared qh/qtd/... structures. + */ + +#define FUSBH200_MAX_ROOT_PORTS 1 /* see HCS_N_PORTS */ + +/* + * fusbh200_rh_state values of FUSBH200_RH_RUNNING or above mean that the + * controller may be doing DMA. Lower values mean there's no DMA. + */ +enum fusbh200_rh_state { + FUSBH200_RH_HALTED, + FUSBH200_RH_SUSPENDED, + FUSBH200_RH_RUNNING, + FUSBH200_RH_STOPPING +}; + +/* + * Timer events, ordered by increasing delay length. + * Always update event_delays_ns[] and event_handlers[] (defined in + * ehci-timer.c) in parallel with this list. + */ +enum fusbh200_hrtimer_event { + FUSBH200_HRTIMER_POLL_ASS, /* Poll for async schedule off */ + FUSBH200_HRTIMER_POLL_PSS, /* Poll for periodic schedule off */ + FUSBH200_HRTIMER_POLL_DEAD, /* Wait for dead controller to stop */ + FUSBH200_HRTIMER_UNLINK_INTR, /* Wait for interrupt QH unlink */ + FUSBH200_HRTIMER_FREE_ITDS, /* Wait for unused iTDs and siTDs */ + FUSBH200_HRTIMER_ASYNC_UNLINKS, /* Unlink empty async QHs */ + FUSBH200_HRTIMER_IAA_WATCHDOG, /* Handle lost IAA interrupts */ + FUSBH200_HRTIMER_DISABLE_PERIODIC, /* Wait to disable periodic sched */ + FUSBH200_HRTIMER_DISABLE_ASYNC, /* Wait to disable async sched */ + FUSBH200_HRTIMER_IO_WATCHDOG, /* Check for missing IRQs */ + FUSBH200_HRTIMER_NUM_EVENTS /* Must come last */ +}; +#define FUSBH200_HRTIMER_NO_EVENT 99 + +struct fusbh200_hcd { /* one per controller */ + /* timing support */ + enum fusbh200_hrtimer_event next_hrtimer_event; + unsigned enabled_hrtimer_events; + ktime_t hr_timeouts[FUSBH200_HRTIMER_NUM_EVENTS]; + struct hrtimer hrtimer; + + int PSS_poll_count; + int ASS_poll_count; + int died_poll_count; + + /* glue to PCI and HCD framework */ + struct fusbh200_caps __iomem *caps; + struct fusbh200_regs __iomem *regs; + struct fusbh200_dbg_port __iomem *debug; + + __u32 hcs_params; /* cached register copy */ + spinlock_t lock; + enum fusbh200_rh_state rh_state; + + /* general schedule support */ + bool scanning:1; + bool need_rescan:1; + bool intr_unlinking:1; + bool async_unlinking:1; + bool shutdown:1; + struct fusbh200_qh *qh_scan_next; + + /* async schedule support */ + struct fusbh200_qh *async; + struct fusbh200_qh *dummy; /* For AMD quirk use */ + struct fusbh200_qh *async_unlink; + struct fusbh200_qh *async_unlink_last; + struct fusbh200_qh *async_iaa; + unsigned async_unlink_cycle; + unsigned async_count; /* async activity count */ + + /* periodic schedule support */ +#define DEFAULT_I_TDPS 1024 /* some HCs can do less */ + unsigned periodic_size; + __hc32 *periodic; /* hw periodic table */ + dma_addr_t periodic_dma; + struct list_head intr_qh_list; + unsigned i_thresh; /* uframes HC might cache */ + + union fusbh200_shadow *pshadow; /* mirror hw periodic table */ + struct fusbh200_qh *intr_unlink; + struct fusbh200_qh *intr_unlink_last; + unsigned intr_unlink_cycle; + unsigned now_frame; /* frame from HC hardware */ + unsigned next_frame; /* scan periodic, start here */ + unsigned intr_count; /* intr activity count */ + unsigned isoc_count; /* isoc activity count */ + unsigned periodic_count; /* periodic activity count */ + unsigned uframe_periodic_max; /* max periodic time per uframe */ + + + /* list of itds completed while now_frame was still active */ + struct list_head cached_itd_list; + struct fusbh200_itd *last_itd_to_free; + + /* per root hub port */ + unsigned long reset_done [FUSBH200_MAX_ROOT_PORTS]; + + /* bit vectors (one bit per port) */ + unsigned long bus_suspended; /* which ports were + already suspended at the start of a bus suspend */ + unsigned long companion_ports; /* which ports are + dedicated to the companion controller */ + unsigned long owned_ports; /* which ports are + owned by the companion during a bus suspend */ + unsigned long port_c_suspend; /* which ports have + the change-suspend feature turned on */ + unsigned long suspended_ports; /* which ports are + suspended */ + unsigned long resuming_ports; /* which ports have + started to resume */ + + /* per-HC memory pools (could be per-bus, but ...) */ + struct dma_pool *qh_pool; /* qh per active urb */ + struct dma_pool *qtd_pool; /* one or more per qh */ + struct dma_pool *itd_pool; /* itd per iso urb */ + + unsigned random_frame; + unsigned long next_statechange; + ktime_t last_periodic_enable; + u32 command; + + /* SILICON QUIRKS */ + unsigned need_io_watchdog:1; + unsigned fs_i_thresh:1; /* Intel iso scheduling */ + + u8 sbrn; /* packed release number */ + + /* irq statistics */ +#ifdef FUSBH200_STATS + struct fusbh200_stats stats; +# define COUNT(x) do { (x)++; } while (0) +#else +# define COUNT(x) do {} while (0) +#endif + + /* debug files */ +#ifdef DEBUG + struct dentry *debug_dir; +#endif +}; + +/* convert between an HCD pointer and the corresponding FUSBH200_HCD */ +static inline struct fusbh200_hcd *hcd_to_fusbh200 (struct usb_hcd *hcd) +{ + return (struct fusbh200_hcd *) (hcd->hcd_priv); +} +static inline struct usb_hcd *fusbh200_to_hcd (struct fusbh200_hcd *fusbh200) +{ + return container_of ((void *) fusbh200, struct usb_hcd, hcd_priv); +} + +/*-------------------------------------------------------------------------*/ + +/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */ + +/* Section 2.2 Host Controller Capability Registers */ +struct fusbh200_caps { + /* these fields are specified as 8 and 16 bit registers, + * but some hosts can't perform 8 or 16 bit PCI accesses. + * some hosts treat caplength and hciversion as parts of a 32-bit + * register, others treat them as two separate registers, this + * affects the memory map for big endian controllers. + */ + u32 hc_capbase; +#define HC_LENGTH(fusbh200, p) (0x00ff&((p) >> /* bits 7:0 / offset 00h */ \ + (fusbh200_big_endian_capbase(fusbh200) ? 24 : 0))) +#define HC_VERSION(fusbh200, p) (0xffff&((p) >> /* bits 31:16 / offset 02h */ \ + (fusbh200_big_endian_capbase(fusbh200) ? 0 : 16))) + u32 hcs_params; /* HCSPARAMS - offset 0x4 */ +#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */ + + u32 hcc_params; /* HCCPARAMS - offset 0x8 */ +#define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */ +#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/ + u8 portroute[8]; /* nibbles for routing - offset 0xC */ +}; + + +/* Section 2.3 Host Controller Operational Registers */ +struct fusbh200_regs { + + /* USBCMD: offset 0x00 */ + u32 command; + +/* EHCI 1.1 addendum */ +/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */ +#define CMD_PARK (1<<11) /* enable "park" on async qh */ +#define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */ +#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */ +#define CMD_ASE (1<<5) /* async schedule enable */ +#define CMD_PSE (1<<4) /* periodic schedule enable */ +/* 3:2 is periodic frame list size */ +#define CMD_RESET (1<<1) /* reset HC not bus */ +#define CMD_RUN (1<<0) /* start/stop HC */ + + /* USBSTS: offset 0x04 */ + u32 status; +#define STS_ASS (1<<15) /* Async Schedule Status */ +#define STS_PSS (1<<14) /* Periodic Schedule Status */ +#define STS_RECL (1<<13) /* Reclamation */ +#define STS_HALT (1<<12) /* Not running (any reason) */ +/* some bits reserved */ + /* these STS_* flags are also intr_enable bits (USBINTR) */ +#define STS_IAA (1<<5) /* Interrupted on async advance */ +#define STS_FATAL (1<<4) /* such as some PCI access errors */ +#define STS_FLR (1<<3) /* frame list rolled over */ +#define STS_PCD (1<<2) /* port change detect */ +#define STS_ERR (1<<1) /* "error" completion (overflow, ...) */ +#define STS_INT (1<<0) /* "normal" completion (short, ...) */ + + /* USBINTR: offset 0x08 */ + u32 intr_enable; + + /* FRINDEX: offset 0x0C */ + u32 frame_index; /* current microframe number */ + /* CTRLDSSEGMENT: offset 0x10 */ + u32 segment; /* address bits 63:32 if needed */ + /* PERIODICLISTBASE: offset 0x14 */ + u32 frame_list; /* points to periodic list */ + /* ASYNCLISTADDR: offset 0x18 */ + u32 async_next; /* address of next async queue head */ + + u32 reserved1; + /* PORTSC: offset 0x20 */ + u32 port_status; +/* 31:23 reserved */ +#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10)) /* USB 1.1 device */ +#define PORT_RESET (1<<8) /* reset port */ +#define PORT_SUSPEND (1<<7) /* suspend port */ +#define PORT_RESUME (1<<6) /* resume it */ +#define PORT_PEC (1<<3) /* port enable change */ +#define PORT_PE (1<<2) /* port enable */ +#define PORT_CSC (1<<1) /* connect status change */ +#define PORT_CONNECT (1<<0) /* device connected */ +#define PORT_RWC_BITS (PORT_CSC | PORT_PEC) + + u32 reserved2[3]; + + /* BMCSR: offset 0x30 */ + u32 bmcsr; /* Bus Moniter Control/Status Register */ +#define BMCSR_HOST_SPD_TYP (3<<9) +#define BMCSR_VBUS_OFF (1<<4) +#define BMCSR_INT_POLARITY (1<<3) + + /* BMISR: offset 0x34 */ + u32 bmisr; /* Bus Moniter Interrupt Status Register*/ +#define BMISR_OVC (1<<1) + + /* BMIER: offset 0x38 */ + u32 bmier; /* Bus Moniter Interrupt Enable Register */ +#define BMIER_OVC_EN (1<<1) +#define BMIER_VBUS_ERR_EN (1<<0) +}; + +/* Appendix C, Debug port ... intended for use with special "debug devices" + * that can help if there's no serial console. (nonstandard enumeration.) + */ +struct fusbh200_dbg_port { + u32 control; +#define DBGP_OWNER (1<<30) +#define DBGP_ENABLED (1<<28) +#define DBGP_DONE (1<<16) +#define DBGP_INUSE (1<<10) +#define DBGP_ERRCODE(x) (((x)>>7)&0x07) +# define DBGP_ERR_BAD 1 +# define DBGP_ERR_SIGNAL 2 +#define DBGP_ERROR (1<<6) +#define DBGP_GO (1<<5) +#define DBGP_OUT (1<<4) +#define DBGP_LEN(x) (((x)>>0)&0x0f) + u32 pids; +#define DBGP_PID_GET(x) (((x)>>16)&0xff) +#define DBGP_PID_SET(data, tok) (((data)<<8)|(tok)) + u32 data03; + u32 data47; + u32 address; +#define DBGP_EPADDR(dev, ep) (((dev)<<8)|(ep)) +}; + +#ifdef CONFIG_EARLY_PRINTK_DBGP +#include <linux/init.h> +extern int __init early_dbgp_init(char *s); +extern struct console early_dbgp_console; +#endif /* CONFIG_EARLY_PRINTK_DBGP */ + +struct usb_hcd; + +static inline int xen_dbgp_reset_prep(struct usb_hcd *hcd) +{ + return 1; /* Shouldn't this be 0? */ +} + +static inline int xen_dbgp_external_startup(struct usb_hcd *hcd) +{ + return -1; +} + +#ifdef CONFIG_EARLY_PRINTK_DBGP +/* Call backs from fusbh200 host driver to fusbh200 debug driver */ +extern int dbgp_external_startup(struct usb_hcd *); +extern int dbgp_reset_prep(struct usb_hcd *hcd); +#else +static inline int dbgp_reset_prep(struct usb_hcd *hcd) +{ + return xen_dbgp_reset_prep(hcd); +} +static inline int dbgp_external_startup(struct usb_hcd *hcd) +{ + return xen_dbgp_external_startup(hcd); +} +#endif + +/*-------------------------------------------------------------------------*/ + +#define QTD_NEXT(fusbh200, dma) cpu_to_hc32(fusbh200, (u32)dma) + +/* + * EHCI Specification 0.95 Section 3.5 + * QTD: describe data transfer components (buffer, direction, ...) + * See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram". + * + * These are associated only with "QH" (Queue Head) structures, + * used with control, bulk, and interrupt transfers. + */ +struct fusbh200_qtd { + /* first part defined by EHCI spec */ + __hc32 hw_next; /* see EHCI 3.5.1 */ + __hc32 hw_alt_next; /* see EHCI 3.5.2 */ + __hc32 hw_token; /* see EHCI 3.5.3 */ +#define QTD_TOGGLE (1 << 31) /* data toggle */ +#define QTD_LENGTH(tok) (((tok)>>16) & 0x7fff) +#define QTD_IOC (1 << 15) /* interrupt on complete */ +#define QTD_CERR(tok) (((tok)>>10) & 0x3) +#define QTD_PID(tok) (((tok)>>8) & 0x3) +#define QTD_STS_ACTIVE (1 << 7) /* HC may execute this */ +#define QTD_STS_HALT (1 << 6) /* halted on error */ +#define QTD_STS_DBE (1 << 5) /* data buffer error (in HC) */ +#define QTD_STS_BABBLE (1 << 4) /* device was babbling (qtd halted) */ +#define QTD_STS_XACT (1 << 3) /* device gave illegal response */ +#define QTD_STS_MMF (1 << 2) /* incomplete split transaction */ +#define QTD_STS_STS (1 << 1) /* split transaction state */ +#define QTD_STS_PING (1 << 0) /* issue PING? */ + +#define ACTIVE_BIT(fusbh200) cpu_to_hc32(fusbh200, QTD_STS_ACTIVE) +#define HALT_BIT(fusbh200) cpu_to_hc32(fusbh200, QTD_STS_HALT) +#define STATUS_BIT(fusbh200) cpu_to_hc32(fusbh200, QTD_STS_STS) + + __hc32 hw_buf [5]; /* see EHCI 3.5.4 */ + __hc32 hw_buf_hi [5]; /* Appendix B */ + + /* the rest is HCD-private */ + dma_addr_t qtd_dma; /* qtd address */ + struct list_head qtd_list; /* sw qtd list */ + struct urb *urb; /* qtd's urb */ + size_t length; /* length of buffer */ +} __attribute__ ((aligned (32))); + +/* mask NakCnt+T in qh->hw_alt_next */ +#define QTD_MASK(fusbh200) cpu_to_hc32 (fusbh200, ~0x1f) + +#define IS_SHORT_READ(token) (QTD_LENGTH (token) != 0 && QTD_PID (token) == 1) + +/*-------------------------------------------------------------------------*/ + +/* type tag from {qh,itd,fstn}->hw_next */ +#define Q_NEXT_TYPE(fusbh200,dma) ((dma) & cpu_to_hc32(fusbh200, 3 << 1)) + +/* + * Now the following defines are not converted using the + * cpu_to_le32() macro anymore, since we have to support + * "dynamic" switching between be and le support, so that the driver + * can be used on one system with SoC EHCI controller using big-endian + * descriptors as well as a normal little-endian PCI EHCI controller. + */ +/* values for that type tag */ +#define Q_TYPE_ITD (0 << 1) +#define Q_TYPE_QH (1 << 1) +#define Q_TYPE_SITD (2 << 1) +#define Q_TYPE_FSTN (3 << 1) + +/* next async queue entry, or pointer to interrupt/periodic QH */ +#define QH_NEXT(fusbh200,dma) (cpu_to_hc32(fusbh200, (((u32)dma)&~0x01f)|Q_TYPE_QH)) + +/* for periodic/async schedules and qtd lists, mark end of list */ +#define FUSBH200_LIST_END(fusbh200) cpu_to_hc32(fusbh200, 1) /* "null pointer" to hw */ + +/* + * Entries in periodic shadow table are pointers to one of four kinds + * of data structure. That's dictated by the hardware; a type tag is + * encoded in the low bits of the hardware's periodic schedule. Use + * Q_NEXT_TYPE to get the tag. + * + * For entries in the async schedule, the type tag always says "qh". + */ +union fusbh200_shadow { + struct fusbh200_qh *qh; /* Q_TYPE_QH */ + struct fusbh200_itd *itd; /* Q_TYPE_ITD */ + struct fusbh200_fstn *fstn; /* Q_TYPE_FSTN */ + __hc32 *hw_next; /* (all types) */ + void *ptr; +}; + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI Specification 0.95 Section 3.6 + * QH: describes control/bulk/interrupt endpoints + * See Fig 3-7 "Queue Head Structure Layout". + * + * These appear in both the async and (for interrupt) periodic schedules. + */ + +/* first part defined by EHCI spec */ +struct fusbh200_qh_hw { + __hc32 hw_next; /* see EHCI 3.6.1 */ + __hc32 hw_info1; /* see EHCI 3.6.2 */ +#define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */ +#define QH_HEAD (1 << 15) /* Head of async reclamation list */ +#define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */ +#define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */ +#define QH_LOW_SPEED (1 << 12) +#define QH_FULL_SPEED (0 << 12) +#define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */ + __hc32 hw_info2; /* see EHCI 3.6.2 */ +#define QH_SMASK 0x000000ff +#define QH_CMASK 0x0000ff00 +#define QH_HUBADDR 0x007f0000 +#define QH_HUBPORT 0x3f800000 +#define QH_MULT 0xc0000000 + __hc32 hw_current; /* qtd list - see EHCI 3.6.4 */ + + /* qtd overlay (hardware parts of a struct fusbh200_qtd) */ + __hc32 hw_qtd_next; + __hc32 hw_alt_next; + __hc32 hw_token; + __hc32 hw_buf [5]; + __hc32 hw_buf_hi [5]; +} __attribute__ ((aligned(32))); + +struct fusbh200_qh { + struct fusbh200_qh_hw *hw; /* Must come first */ + /* the rest is HCD-private */ + dma_addr_t qh_dma; /* address of qh */ + union fusbh200_shadow qh_next; /* ptr to qh; or periodic */ + struct list_head qtd_list; /* sw qtd list */ + struct list_head intr_node; /* list of intr QHs */ + struct fusbh200_qtd *dummy; + struct fusbh200_qh *unlink_next; /* next on unlink list */ + + unsigned unlink_cycle; + + u8 needs_rescan; /* Dequeue during giveback */ + u8 qh_state; +#define QH_STATE_LINKED 1 /* HC sees this */ +#define QH_STATE_UNLINK 2 /* HC may still see this */ +#define QH_STATE_IDLE 3 /* HC doesn't see this */ +#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on unlink q */ +#define QH_STATE_COMPLETING 5 /* don't touch token.HALT */ + + u8 xacterrs; /* XactErr retry counter */ +#define QH_XACTERR_MAX 32 /* XactErr retry limit */ + + /* periodic schedule info */ + u8 usecs; /* intr bandwidth */ + u8 gap_uf; /* uframes split/csplit gap */ + u8 c_usecs; /* ... split completion bw */ + u16 tt_usecs; /* tt downstream bandwidth */ + unsigned short period; /* polling interval */ + unsigned short start; /* where polling starts */ +#define NO_FRAME ((unsigned short)~0) /* pick new start */ + + struct usb_device *dev; /* access to TT */ + unsigned is_out:1; /* bulk or intr OUT */ + unsigned clearing_tt:1; /* Clear-TT-Buf in progress */ +}; + +/*-------------------------------------------------------------------------*/ + +/* description of one iso transaction (up to 3 KB data if highspeed) */ +struct fusbh200_iso_packet { + /* These will be copied to iTD when scheduling */ + u64 bufp; /* itd->hw_bufp{,_hi}[pg] |= */ + __hc32 transaction; /* itd->hw_transaction[i] |= */ + u8 cross; /* buf crosses pages */ + /* for full speed OUT splits */ + u32 buf1; +}; + +/* temporary schedule data for packets from iso urbs (both speeds) + * each packet is one logical usb transaction to the device (not TT), + * beginning at stream->next_uframe + */ +struct fusbh200_iso_sched { + struct list_head td_list; + unsigned span; + struct fusbh200_iso_packet packet [0]; +}; + +/* + * fusbh200_iso_stream - groups all (s)itds for this endpoint. + * acts like a qh would, if EHCI had them for ISO. + */ +struct fusbh200_iso_stream { + /* first field matches fusbh200_hq, but is NULL */ + struct fusbh200_qh_hw *hw; + + u8 bEndpointAddress; + u8 highspeed; + struct list_head td_list; /* queued itds */ + struct list_head free_list; /* list of unused itds */ + struct usb_device *udev; + struct usb_host_endpoint *ep; + + /* output of (re)scheduling */ + int next_uframe; + __hc32 splits; + + /* the rest is derived from the endpoint descriptor, + * trusting urb->interval == f(epdesc->bInterval) and + * including the extra info for hw_bufp[0..2] + */ + u8 usecs, c_usecs; + u16 interval; + u16 tt_usecs; + u16 maxp; + u16 raw_mask; + unsigned bandwidth; + + /* This is used to initialize iTD's hw_bufp fields */ + __hc32 buf0; + __hc32 buf1; + __hc32 buf2; + + /* this is used to initialize sITD's tt info */ + __hc32 address; +}; + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI Specification 0.95 Section 3.3 + * Fig 3-4 "Isochronous Transaction Descriptor (iTD)" + * + * Schedule records for high speed iso xfers + */ +struct fusbh200_itd { + /* first part defined by EHCI spec */ + __hc32 hw_next; /* see EHCI 3.3.1 */ + __hc32 hw_transaction [8]; /* see EHCI 3.3.2 */ +#define FUSBH200_ISOC_ACTIVE (1<<31) /* activate transfer this slot */ +#define FUSBH200_ISOC_BUF_ERR (1<<30) /* Data buffer error */ +#define FUSBH200_ISOC_BABBLE (1<<29) /* babble detected */ +#define FUSBH200_ISOC_XACTERR (1<<28) /* XactErr - transaction error */ +#define FUSBH200_ITD_LENGTH(tok) (((tok)>>16) & 0x0fff) +#define FUSBH200_ITD_IOC (1 << 15) /* interrupt on complete */ + +#define ITD_ACTIVE(fusbh200) cpu_to_hc32(fusbh200, FUSBH200_ISOC_ACTIVE) + + __hc32 hw_bufp [7]; /* see EHCI 3.3.3 */ + __hc32 hw_bufp_hi [7]; /* Appendix B */ + + /* the rest is HCD-private */ + dma_addr_t itd_dma; /* for this itd */ + union fusbh200_shadow itd_next; /* ptr to periodic q entry */ + + struct urb *urb; + struct fusbh200_iso_stream *stream; /* endpoint's queue */ + struct list_head itd_list; /* list of stream's itds */ + + /* any/all hw_transactions here may be used by that urb */ + unsigned frame; /* where scheduled */ + unsigned pg; + unsigned index[8]; /* in urb->iso_frame_desc */ +} __attribute__ ((aligned (32))); + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI Specification 0.96 Section 3.7 + * Periodic Frame Span Traversal Node (FSTN) + * + * Manages split interrupt transactions (using TT) that span frame boundaries + * into uframes 0/1; see 4.12.2.2. In those uframes, a "save place" FSTN + * makes the HC jump (back) to a QH to scan for fs/ls QH completions until + * it hits a "restore" FSTN; then it returns to finish other uframe 0/1 work. + */ +struct fusbh200_fstn { + __hc32 hw_next; /* any periodic q entry */ + __hc32 hw_prev; /* qh or FUSBH200_LIST_END */ + + /* the rest is HCD-private */ + dma_addr_t fstn_dma; + union fusbh200_shadow fstn_next; /* ptr to periodic q entry */ +} __attribute__ ((aligned (32))); + +/*-------------------------------------------------------------------------*/ + +/* Prepare the PORTSC wakeup flags during controller suspend/resume */ + +#define fusbh200_prepare_ports_for_controller_suspend(fusbh200, do_wakeup) \ + fusbh200_adjust_port_wakeup_flags(fusbh200, true, do_wakeup); + +#define fusbh200_prepare_ports_for_controller_resume(fusbh200) \ + fusbh200_adjust_port_wakeup_flags(fusbh200, false, false); + +/*-------------------------------------------------------------------------*/ + +/* + * Some EHCI controllers have a Transaction Translator built into the + * root hub. This is a non-standard feature. Each controller will need + * to add code to the following inline functions, and call them as + * needed (mostly in root hub code). + */ + +static inline unsigned int +fusbh200_get_speed(struct fusbh200_hcd *fusbh200, unsigned int portsc) +{ + return (readl(&fusbh200->regs->bmcsr) + & BMCSR_HOST_SPD_TYP) >> 9; +} + +/* Returns the speed of a device attached to a port on the root hub. */ +static inline unsigned int +fusbh200_port_speed(struct fusbh200_hcd *fusbh200, unsigned int portsc) +{ + switch (fusbh200_get_speed(fusbh200, portsc)) { + case 0: + return 0; + case 1: + return USB_PORT_STAT_LOW_SPEED; + case 2: + default: + return USB_PORT_STAT_HIGH_SPEED; + } +} + +/*-------------------------------------------------------------------------*/ + +#define fusbh200_has_fsl_portno_bug(e) (0) + +/* + * While most USB host controllers implement their registers in + * little-endian format, a minority (celleb companion chip) implement + * them in big endian format. + * + * This attempts to support either format at compile time without a + * runtime penalty, or both formats with the additional overhead + * of checking a flag bit. + * + */ + +#define fusbh200_big_endian_mmio(e) 0 +#define fusbh200_big_endian_capbase(e) 0 + +static inline unsigned int fusbh200_readl(const struct fusbh200_hcd *fusbh200, + __u32 __iomem * regs) +{ + return readl(regs); +} + +static inline void fusbh200_writel(const struct fusbh200_hcd *fusbh200, + const unsigned int val, __u32 __iomem *regs) +{ + writel(val, regs); +} + +/* cpu to fusbh200 */ +static inline __hc32 cpu_to_hc32 (const struct fusbh200_hcd *fusbh200, const u32 x) +{ + return cpu_to_le32(x); +} + +/* fusbh200 to cpu */ +static inline u32 hc32_to_cpu (const struct fusbh200_hcd *fusbh200, const __hc32 x) +{ + return le32_to_cpu(x); +} + +static inline u32 hc32_to_cpup (const struct fusbh200_hcd *fusbh200, const __hc32 *x) +{ + return le32_to_cpup(x); +} + +/*-------------------------------------------------------------------------*/ + +static inline unsigned fusbh200_read_frame_index(struct fusbh200_hcd *fusbh200) +{ + return fusbh200_readl(fusbh200, &fusbh200->regs->frame_index); +} + +#define fusbh200_itdlen(urb, desc, t) ({ \ + usb_pipein((urb)->pipe) ? \ + (desc)->length - FUSBH200_ITD_LENGTH(t) : \ + FUSBH200_ITD_LENGTH(t); \ +}) +/*-------------------------------------------------------------------------*/ + +#ifndef DEBUG +#define STUB_DEBUG_FILES +#endif /* DEBUG */ + +/*-------------------------------------------------------------------------*/ + +#endif /* __LINUX_FUSBH200_H */ diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c index 104730dabd2d..5b86ffb88f1c 100644 --- a/drivers/usb/host/hwa-hc.c +++ b/drivers/usb/host/hwa-hc.c @@ -161,6 +161,13 @@ static int hwahc_op_start(struct usb_hcd *usb_hcd) usb_hcd->uses_new_polling = 1; set_bit(HCD_FLAG_POLL_RH, &usb_hcd->flags); usb_hcd->state = HC_STATE_RUNNING; + + /* + * prevent USB core from suspending the root hub since + * bus_suspend and bus_resume are not yet supported. + */ + pm_runtime_get_noresume(&usb_hcd->self.root_hub->dev); + result = 0; out: mutex_unlock(&wusbhc->mutex); @@ -577,7 +584,7 @@ static struct hc_driver hwahc_hc_driver = { .product_desc = "Wireless USB HWA host controller", .hcd_priv_size = sizeof(struct hwahc) - sizeof(struct usb_hcd), .irq = NULL, /* FIXME */ - .flags = HCD_USB2, /* FIXME */ + .flags = HCD_USB25, .reset = hwahc_op_reset, .start = hwahc_op_start, .stop = hwahc_op_stop, @@ -588,8 +595,6 @@ static struct hc_driver hwahc_hc_driver = { .hub_status_data = wusbhc_rh_status_data, .hub_control = wusbhc_rh_control, - .bus_suspend = wusbhc_rh_suspend, - .bus_resume = wusbhc_rh_resume, .start_port_reset = wusbhc_rh_start_port_reset, }; @@ -685,12 +690,9 @@ static int hwahc_create(struct hwahc *hwahc, struct usb_interface *iface) wa->usb_dev = usb_get_dev(usb_dev); /* bind the USB device */ wa->usb_iface = usb_get_intf(iface); wusbhc->dev = dev; - wusbhc->uwb_rc = uwb_rc_get_by_grandpa(iface->dev.parent); - if (wusbhc->uwb_rc == NULL) { - result = -ENODEV; - dev_err(dev, "Cannot get associated UWB Host Controller\n"); - goto error_rc_get; - } + /* defer getting the uwb_rc handle until it is needed since it + * may not have been registered by the hwa_rc driver yet. */ + wusbhc->uwb_rc = NULL; result = wa_fill_descr(wa); /* Get the device descriptor */ if (result < 0) goto error_fill_descriptor; @@ -733,8 +735,6 @@ error_wusbhc_create: /* WA Descr fill allocs no resources */ error_security_create: error_fill_descriptor: - uwb_rc_put(wusbhc->uwb_rc); -error_rc_get: usb_put_intf(iface); usb_put_dev(usb_dev); return result; @@ -776,6 +776,7 @@ static int hwahc_probe(struct usb_interface *usb_iface, goto error_alloc; } usb_hcd->wireless = 1; + usb_hcd->self.sg_tablesize = ~0; wusbhc = usb_hcd_to_wusbhc(usb_hcd); hwahc = container_of(wusbhc, struct hwahc, wusbhc); hwahc_init(hwahc); diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c index f0ebe8e7c58b..60a5de505ca1 100644 --- a/drivers/usb/host/imx21-hcd.c +++ b/drivers/usb/host/imx21-hcd.c @@ -809,26 +809,36 @@ static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd, /* calculate frame */ cur_frame = imx21_hc_get_frame(hcd); - if (urb->transfer_flags & URB_ISO_ASAP) { - if (list_empty(&ep_priv->td_list)) - urb->start_frame = cur_frame + 5; - else - urb->start_frame = list_entry( - ep_priv->td_list.prev, - struct td, list)->frame + urb->interval; - } - urb->start_frame = wrap_frame(urb->start_frame); - if (frame_after(cur_frame, urb->start_frame)) { - dev_dbg(imx21->dev, - "enqueue: adjusting iso start %d (cur=%d) asap=%d\n", - urb->start_frame, cur_frame, - (urb->transfer_flags & URB_ISO_ASAP) != 0); - urb->start_frame = wrap_frame(cur_frame + 1); + i = 0; + if (list_empty(&ep_priv->td_list)) { + urb->start_frame = wrap_frame(cur_frame + 5); + } else { + urb->start_frame = wrap_frame(list_entry(ep_priv->td_list.prev, + struct td, list)->frame + urb->interval); + + if (frame_after(cur_frame, urb->start_frame)) { + dev_dbg(imx21->dev, + "enqueue: adjusting iso start %d (cur=%d) asap=%d\n", + urb->start_frame, cur_frame, + (urb->transfer_flags & URB_ISO_ASAP) != 0); + i = DIV_ROUND_UP(wrap_frame( + cur_frame - urb->start_frame), + urb->interval); + if (urb->transfer_flags & URB_ISO_ASAP) { + urb->start_frame = wrap_frame(urb->start_frame + + i * urb->interval); + i = 0; + } else if (i >= urb->number_of_packets) { + ret = -EXDEV; + goto alloc_dmem_failed; + } + } } /* set up transfers */ + urb_priv->isoc_remaining = urb->number_of_packets - i; td = urb_priv->isoc_td; - for (i = 0; i < urb->number_of_packets; i++, td++) { + for (; i < urb->number_of_packets; i++, td++) { unsigned int offset = urb->iso_frame_desc[i].offset; td->ep = ep; td->urb = urb; @@ -840,7 +850,6 @@ static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd, list_add_tail(&td->list, &ep_priv->td_list); } - urb_priv->isoc_remaining = urb->number_of_packets; dev_vdbg(imx21->dev, "setup %d packets for iso frame %d->%d\n", urb->number_of_packets, urb->start_frame, td->frame); @@ -1851,7 +1860,7 @@ static int imx21_probe(struct platform_device *pdev) imx21 = hcd_to_imx21(hcd); imx21->hcd = hcd; imx21->dev = &pdev->dev; - imx21->pdata = pdev->dev.platform_data; + imx21->pdata = dev_get_platdata(&pdev->dev); if (!imx21->pdata) imx21->pdata = &default_pdata; diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index b64e661618bb..c7d0f8f231be 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -1626,7 +1626,7 @@ static int isp116x_probe(struct platform_device *pdev) isp116x->addr_reg = addr_reg; spin_lock_init(&isp116x->lock); INIT_LIST_HEAD(&isp116x->async); - isp116x->board = pdev->dev.platform_data; + isp116x->board = dev_get_platdata(&pdev->dev); if (!isp116x->board) { ERR("Platform data structure not initialized\n"); diff --git a/drivers/usb/host/isp116x.h b/drivers/usb/host/isp116x.h index 9a2c400e6090..dd34b7a33965 100644 --- a/drivers/usb/host/isp116x.h +++ b/drivers/usb/host/isp116x.h @@ -325,11 +325,7 @@ struct isp116x_ep { /*-------------------------------------------------------------------------*/ -#ifdef DEBUG -#define DBG(stuff...) printk(KERN_DEBUG "116x: " stuff) -#else -#define DBG(stuff...) do{}while(0) -#endif +#define DBG(stuff...) pr_debug("116x: " stuff) #ifdef VERBOSE # define VDBG DBG @@ -358,15 +354,8 @@ struct isp116x_ep { #define isp116x_check_platform_delay(h) 0 #endif -#if defined(DEBUG) -#define IRQ_TEST() BUG_ON(!irqs_disabled()) -#else -#define IRQ_TEST() do{}while(0) -#endif - static inline void isp116x_write_addr(struct isp116x *isp116x, unsigned reg) { - IRQ_TEST(); writew(reg & 0xff, isp116x->addr_reg); isp116x_delay(isp116x, 300); } diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c index b04e8ece4d35..6f29abad6815 100644 --- a/drivers/usb/host/isp1362-hcd.c +++ b/drivers/usb/host/isp1362-hcd.c @@ -37,11 +37,7 @@ * recovery time (MSCx = 0x7f8c) with a memory clock of 99.53 MHz. */ -#ifdef CONFIG_USB_DEBUG -# define ISP1362_DEBUG -#else -# undef ISP1362_DEBUG -#endif +#undef ISP1362_DEBUG /* * The PXA255 UDC apparently doesn't handle GET_STATUS, GET_CONFIG and @@ -82,6 +78,8 @@ #include <linux/io.h> #include <linux/bitmap.h> #include <linux/prefetch.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> #include <asm/irq.h> #include <asm/byteorder.h> @@ -92,7 +90,6 @@ static int dbg_level; module_param(dbg_level, int, 0644); #else module_param(dbg_level, int, 0); -#define STUB_DEBUG_FILE #endif #include "../core/usb.h" @@ -350,8 +347,6 @@ static void isp1362_write_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep struct ptd *ptd = &ep->ptd; int len = PTD_GET_DIR(ptd) == PTD_DIR_IN ? 0 : ep->length; - _BUG_ON(ep->ptd_offset < 0); - prefetch(ptd); isp1362_write_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); if (len) @@ -1575,12 +1570,12 @@ static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, DBG(0, "ClearHubFeature: "); switch (wValue) { case C_HUB_OVER_CURRENT: - _DBG(0, "C_HUB_OVER_CURRENT\n"); + DBG(0, "C_HUB_OVER_CURRENT\n"); spin_lock_irqsave(&isp1362_hcd->lock, flags); isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_OCIC); spin_unlock_irqrestore(&isp1362_hcd->lock, flags); case C_HUB_LOCAL_POWER: - _DBG(0, "C_HUB_LOCAL_POWER\n"); + DBG(0, "C_HUB_LOCAL_POWER\n"); break; default: goto error; @@ -1591,7 +1586,7 @@ static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, switch (wValue) { case C_HUB_OVER_CURRENT: case C_HUB_LOCAL_POWER: - _DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); + DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); break; default: goto error; @@ -1622,36 +1617,36 @@ static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, switch (wValue) { case USB_PORT_FEAT_ENABLE: - _DBG(0, "USB_PORT_FEAT_ENABLE\n"); + DBG(0, "USB_PORT_FEAT_ENABLE\n"); tmp = RH_PS_CCS; break; case USB_PORT_FEAT_C_ENABLE: - _DBG(0, "USB_PORT_FEAT_C_ENABLE\n"); + DBG(0, "USB_PORT_FEAT_C_ENABLE\n"); tmp = RH_PS_PESC; break; case USB_PORT_FEAT_SUSPEND: - _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); + DBG(0, "USB_PORT_FEAT_SUSPEND\n"); tmp = RH_PS_POCI; break; case USB_PORT_FEAT_C_SUSPEND: - _DBG(0, "USB_PORT_FEAT_C_SUSPEND\n"); + DBG(0, "USB_PORT_FEAT_C_SUSPEND\n"); tmp = RH_PS_PSSC; break; case USB_PORT_FEAT_POWER: - _DBG(0, "USB_PORT_FEAT_POWER\n"); + DBG(0, "USB_PORT_FEAT_POWER\n"); tmp = RH_PS_LSDA; break; case USB_PORT_FEAT_C_CONNECTION: - _DBG(0, "USB_PORT_FEAT_C_CONNECTION\n"); + DBG(0, "USB_PORT_FEAT_C_CONNECTION\n"); tmp = RH_PS_CSC; break; case USB_PORT_FEAT_C_OVER_CURRENT: - _DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n"); + DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n"); tmp = RH_PS_OCIC; break; case USB_PORT_FEAT_C_RESET: - _DBG(0, "USB_PORT_FEAT_C_RESET\n"); + DBG(0, "USB_PORT_FEAT_C_RESET\n"); tmp = RH_PS_PRSC; break; default: @@ -1671,7 +1666,7 @@ static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, wIndex--; switch (wValue) { case USB_PORT_FEAT_SUSPEND: - _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); + DBG(0, "USB_PORT_FEAT_SUSPEND\n"); spin_lock_irqsave(&isp1362_hcd->lock, flags); isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PSS); isp1362_hcd->rhport[wIndex] = @@ -1679,7 +1674,7 @@ static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, spin_unlock_irqrestore(&isp1362_hcd->lock, flags); break; case USB_PORT_FEAT_POWER: - _DBG(0, "USB_PORT_FEAT_POWER\n"); + DBG(0, "USB_PORT_FEAT_POWER\n"); spin_lock_irqsave(&isp1362_hcd->lock, flags); isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PPS); isp1362_hcd->rhport[wIndex] = @@ -1687,7 +1682,7 @@ static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, spin_unlock_irqrestore(&isp1362_hcd->lock, flags); break; case USB_PORT_FEAT_RESET: - _DBG(0, "USB_PORT_FEAT_RESET\n"); + DBG(0, "USB_PORT_FEAT_RESET\n"); spin_lock_irqsave(&isp1362_hcd->lock, flags); t1 = jiffies + msecs_to_jiffies(USB_RESET_WIDTH); @@ -1721,7 +1716,7 @@ static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, default: error: /* "protocol stall" on error */ - _DBG(0, "PROTOCOL STALL\n"); + DBG(0, "PROTOCOL STALL\n"); retval = -EPIPE; } @@ -1913,20 +1908,6 @@ static int isp1362_bus_resume(struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ -#ifdef STUB_DEBUG_FILE - -static inline void create_debug_file(struct isp1362_hcd *isp1362_hcd) -{ -} -static inline void remove_debug_file(struct isp1362_hcd *isp1362_hcd) -{ -} - -#else - -#include <linux/proc_fs.h> -#include <linux/seq_file.h> - static void dump_irq(struct seq_file *s, char *label, u16 mask) { seq_printf(s, "%-15s %04x%s%s%s%s%s%s\n", label, mask, @@ -2069,7 +2050,7 @@ static void dump_regs(struct seq_file *s, struct isp1362_hcd *isp1362_hcd) isp1362_read_reg16(isp1362_hcd, HCATLDTCTO)); } -static int proc_isp1362_show(struct seq_file *s, void *unused) +static int isp1362_show(struct seq_file *s, void *unused) { struct isp1362_hcd *isp1362_hcd = s->private; struct isp1362_ep *ep; @@ -2173,41 +2154,31 @@ static int proc_isp1362_show(struct seq_file *s, void *unused) return 0; } -static int proc_isp1362_open(struct inode *inode, struct file *file) +static int isp1362_open(struct inode *inode, struct file *file) { - return single_open(file, proc_isp1362_show, PDE_DATA(inode)); + return single_open(file, isp1362_show, inode); } -static const struct file_operations proc_ops = { - .open = proc_isp1362_open, +static const struct file_operations debug_ops = { + .open = isp1362_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; /* expect just one isp1362_hcd per system */ -static const char proc_filename[] = "driver/isp1362"; - static void create_debug_file(struct isp1362_hcd *isp1362_hcd) { - struct proc_dir_entry *pde; - - pde = proc_create_data(proc_filename, 0, NULL, &proc_ops, isp1362_hcd); - if (pde == NULL) { - pr_warning("%s: Failed to create debug file '%s'\n", __func__, proc_filename); - return; - } - isp1362_hcd->pde = pde; + isp1362_hcd->debug_file = debugfs_create_file("isp1362", S_IRUGO, + usb_debug_root, + isp1362_hcd, &debug_ops); } static void remove_debug_file(struct isp1362_hcd *isp1362_hcd) { - if (isp1362_hcd->pde) - remove_proc_entry(proc_filename, NULL); + debugfs_remove(isp1362_hcd->debug_file); } -#endif - /*-------------------------------------------------------------------------*/ static void __isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) @@ -2754,7 +2725,7 @@ static int isp1362_probe(struct platform_device *pdev) INIT_LIST_HEAD(&isp1362_hcd->periodic); INIT_LIST_HEAD(&isp1362_hcd->isoc); INIT_LIST_HEAD(&isp1362_hcd->remove_list); - isp1362_hcd->board = pdev->dev.platform_data; + isp1362_hcd->board = dev_get_platdata(&pdev->dev); #if USE_PLATFORM_DELAY if (!isp1362_hcd->board->delay) { dev_err(hcd->self.controller, "No platform delay function given\n"); diff --git a/drivers/usb/host/isp1362.h b/drivers/usb/host/isp1362.h index 0f97820e65be..3b0b4847c3a9 100644 --- a/drivers/usb/host/isp1362.h +++ b/drivers/usb/host/isp1362.h @@ -76,14 +76,14 @@ static inline void delayed_insw(unsigned int addr, void *buf, int len) #define ISP1362_REG_WRITE_OFFSET 0x80 -#ifdef ISP1362_DEBUG -typedef const unsigned int isp1362_reg_t; - #define REG_WIDTH_16 0x000 #define REG_WIDTH_32 0x100 #define REG_WIDTH_MASK 0x100 #define REG_NO_MASK 0x0ff +#ifdef ISP1362_DEBUG +typedef const unsigned int isp1362_reg_t; + #define REG_ACCESS_R 0x200 #define REG_ACCESS_W 0x400 #define REG_ACCESS_RW 0x600 @@ -91,9 +91,6 @@ typedef const unsigned int isp1362_reg_t; #define ISP1362_REG_NO(r) ((r) & REG_NO_MASK) -#define _BUG_ON(x) BUG_ON(x) -#define _WARN_ON(x) WARN_ON(x) - #define ISP1362_REG(name, addr, width, rw) \ static isp1362_reg_t ISP1362_REG_##name = ((addr) | (width) | (rw)) @@ -102,8 +99,6 @@ static isp1362_reg_t ISP1362_REG_##name = ((addr) | (width) | (rw)) #else typedef const unsigned char isp1362_reg_t; #define ISP1362_REG_NO(r) (r) -#define _BUG_ON(x) do {} while (0) -#define _WARN_ON(x) do {} while (0) #define ISP1362_REG(name, addr, width, rw) \ static isp1362_reg_t ISP1362_REG_##name = addr @@ -485,7 +480,7 @@ struct isp1362_hcd { struct isp1362_platform_data *board; - struct proc_dir_entry *pde; + struct dentry *debug_file; unsigned long stat1, stat2, stat4, stat8, stat16; /* HC registers */ @@ -587,21 +582,11 @@ static inline struct usb_hcd *isp1362_hcd_to_hcd(struct isp1362_hcd *isp1362_hcd * ISP1362 HW Interface */ -#ifdef ISP1362_DEBUG #define DBG(level, fmt...) \ do { \ if (dbg_level > level) \ pr_debug(fmt); \ } while (0) -#define _DBG(level, fmt...) \ - do { \ - if (dbg_level > level) \ - printk(fmt); \ - } while (0) -#else -#define DBG(fmt...) do {} while (0) -#define _DBG DBG -#endif #ifdef VERBOSE # define VDBG(fmt...) DBG(3, fmt) @@ -645,9 +630,7 @@ static inline struct usb_hcd *isp1362_hcd_to_hcd(struct isp1362_hcd *isp1362_hcd */ static void isp1362_write_addr(struct isp1362_hcd *isp1362_hcd, isp1362_reg_t reg) { - /*_BUG_ON((reg & ISP1362_REG_WRITE_OFFSET) && !(reg & REG_ACCESS_W));*/ REG_ACCESS_TEST(reg); - _BUG_ON(!irqs_disabled()); DUMMY_DELAY_ACCESS; writew(ISP1362_REG_NO(reg), isp1362_hcd->addr_reg); DUMMY_DELAY_ACCESS; @@ -656,7 +639,6 @@ static void isp1362_write_addr(struct isp1362_hcd *isp1362_hcd, isp1362_reg_t re static void isp1362_write_data16(struct isp1362_hcd *isp1362_hcd, u16 val) { - _BUG_ON(!irqs_disabled()); DUMMY_DELAY_ACCESS; writew(val, isp1362_hcd->data_reg); } @@ -665,7 +647,6 @@ static u16 isp1362_read_data16(struct isp1362_hcd *isp1362_hcd) { u16 val; - _BUG_ON(!irqs_disabled()); DUMMY_DELAY_ACCESS; val = readw(isp1362_hcd->data_reg); @@ -674,7 +655,6 @@ static u16 isp1362_read_data16(struct isp1362_hcd *isp1362_hcd) static void isp1362_write_data32(struct isp1362_hcd *isp1362_hcd, u32 val) { - _BUG_ON(!irqs_disabled()); #if USE_32BIT DUMMY_DELAY_ACCESS; writel(val, isp1362_hcd->data_reg); @@ -690,7 +670,6 @@ static u32 isp1362_read_data32(struct isp1362_hcd *isp1362_hcd) { u32 val; - _BUG_ON(!irqs_disabled()); #if USE_32BIT DUMMY_DELAY_ACCESS; val = readl(isp1362_hcd->data_reg); @@ -713,8 +692,6 @@ static void isp1362_read_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 le if (!len) return; - _BUG_ON(!irqs_disabled()); - RDBG("%s: Reading %d byte from fifo to mem @ %p\n", __func__, len, buf); #if USE_32BIT if (len >= 4) { @@ -760,8 +737,6 @@ static void isp1362_write_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 l return; } - _BUG_ON(!irqs_disabled()); - RDBG("%s: Writing %d byte to fifo from memory @%p\n", __func__, len, buf); #if USE_32BIT if (len >= 4) { @@ -854,7 +829,6 @@ static void isp1362_write_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 l isp1362_write_reg32(d, r, __v & ~m); \ } -#ifdef ISP1362_DEBUG #define isp1362_show_reg(d, r) { \ if ((ISP1362_REG_##r & REG_WIDTH_MASK) == REG_WIDTH_32) \ DBG(0, "%-12s[%02x]: %08x\n", #r, \ @@ -863,9 +837,6 @@ static void isp1362_write_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 l DBG(0, "%-12s[%02x]: %04x\n", #r, \ ISP1362_REG_NO(ISP1362_REG_##r), isp1362_read_reg16(d, r)); \ } -#else -#define isp1362_show_reg(d, r) do {} while (0) -#endif static void __attribute__((__unused__)) isp1362_show_regs(struct isp1362_hcd *isp1362_hcd) { @@ -923,10 +894,6 @@ static void __attribute__((__unused__)) isp1362_show_regs(struct isp1362_hcd *is static void isp1362_write_diraddr(struct isp1362_hcd *isp1362_hcd, u16 offset, u16 len) { - _BUG_ON(offset & 1); - _BUG_ON(offset >= ISP1362_BUF_SIZE); - _BUG_ON(len > ISP1362_BUF_SIZE); - _BUG_ON(offset + len > ISP1362_BUF_SIZE); len = (len + 1) & ~1; isp1362_clr_mask16(isp1362_hcd, HCDMACFG, HCDMACFG_CTR_ENABLE); @@ -936,42 +903,32 @@ static void isp1362_write_diraddr(struct isp1362_hcd *isp1362_hcd, u16 offset, u static void isp1362_read_buffer(struct isp1362_hcd *isp1362_hcd, void *buf, u16 offset, int len) { - _BUG_ON(offset & 1); - isp1362_write_diraddr(isp1362_hcd, offset, len); DBG(3, "%s: Reading %d byte from buffer @%04x to memory @ %p\n", __func__, len, offset, buf); isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT); - _WARN_ON((isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_EOT)); isp1362_write_addr(isp1362_hcd, ISP1362_REG_HCDIRDATA); isp1362_read_fifo(isp1362_hcd, buf, len); - _WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_EOT)); isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT); - _WARN_ON((isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_EOT)); } static void isp1362_write_buffer(struct isp1362_hcd *isp1362_hcd, void *buf, u16 offset, int len) { - _BUG_ON(offset & 1); - isp1362_write_diraddr(isp1362_hcd, offset, len); DBG(3, "%s: Writing %d byte to buffer @%04x from memory @ %p\n", __func__, len, offset, buf); isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT); - _WARN_ON((isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_EOT)); isp1362_write_addr(isp1362_hcd, ISP1362_REG_HCDIRDATA | ISP1362_REG_WRITE_OFFSET); isp1362_write_fifo(isp1362_hcd, buf, len); - _WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_EOT)); isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT); - _WARN_ON((isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_EOT)); } static void __attribute__((unused)) dump_data(char *buf, int len) @@ -1002,7 +959,7 @@ static void __attribute__((unused)) dump_data(char *buf, int len) } } -#if defined(ISP1362_DEBUG) && defined(PTD_TRACE) +#if defined(PTD_TRACE) static void dump_ptd(struct ptd *ptd) { diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c index a13709ee4e5d..df931e9ba5b5 100644 --- a/drivers/usb/host/isp1760-if.c +++ b/drivers/usb/host/isp1760-if.c @@ -118,7 +118,7 @@ static int of_isp1760_probe(struct platform_device *dev) goto free_gpio; } - dev_set_drvdata(&dev->dev, drvdata); + platform_set_drvdata(dev, drvdata); return ret; free_gpio: @@ -133,9 +133,7 @@ free_data: static int of_isp1760_remove(struct platform_device *dev) { - struct isp1760 *drvdata = dev_get_drvdata(&dev->dev); - - dev_set_drvdata(&dev->dev, NULL); + struct isp1760 *drvdata = platform_get_drvdata(dev); usb_remove_hcd(drvdata->hcd); iounmap(drvdata->hcd->regs); @@ -353,7 +351,7 @@ static int isp1760_plat_probe(struct platform_device *pdev) struct resource *mem_res; struct resource *irq_res; resource_size_t mem_size; - struct isp1760_platform_data *priv = pdev->dev.platform_data; + struct isp1760_platform_data *priv = dev_get_platdata(&pdev->dev); unsigned int devflags = 0; unsigned long irqflags = IRQF_SHARED; @@ -398,7 +396,7 @@ static int isp1760_plat_probe(struct platform_device *pdev) irqflags, -ENOENT, &pdev->dev, dev_name(&pdev->dev), devflags); - dev_set_drvdata(&pdev->dev, hcd); + platform_set_drvdata(pdev, hcd); if (IS_ERR(hcd)) { pr_warning("isp1760: Failed to register the HCD device\n"); @@ -419,7 +417,7 @@ static int isp1760_plat_remove(struct platform_device *pdev) { struct resource *mem_res; resource_size_t mem_size; - struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev); + struct usb_hcd *hcd = platform_get_drvdata(pdev); usb_remove_hcd(hcd); diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index 2ee1496dbc1d..caa3764a3407 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -31,8 +31,8 @@ #define at91_for_each_port(index) \ for ((index) = 0; (index) < AT91_MAX_USBH_PORTS; (index)++) -/* interface and function clocks; sometimes also an AHB clock */ -static struct clk *iclk, *fclk, *hclk; +/* interface, function and usb clocks; sometimes also an AHB clock */ +static struct clk *iclk, *fclk, *uclk, *hclk; static int clocked; extern int usb_disabled(void); @@ -41,17 +41,23 @@ extern int usb_disabled(void); static void at91_start_clock(void) { - clk_enable(hclk); - clk_enable(iclk); - clk_enable(fclk); + if (IS_ENABLED(CONFIG_COMMON_CLK)) { + clk_set_rate(uclk, 48000000); + clk_prepare_enable(uclk); + } + clk_prepare_enable(hclk); + clk_prepare_enable(iclk); + clk_prepare_enable(fclk); clocked = 1; } static void at91_stop_clock(void) { - clk_disable(fclk); - clk_disable(iclk); - clk_disable(hclk); + clk_disable_unprepare(fclk); + clk_disable_unprepare(iclk); + clk_disable_unprepare(hclk); + if (IS_ENABLED(CONFIG_COMMON_CLK)) + clk_disable_unprepare(uclk); clocked = 0; } @@ -162,6 +168,14 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, retval = PTR_ERR(hclk); goto err5; } + if (IS_ENABLED(CONFIG_COMMON_CLK)) { + uclk = clk_get(&pdev->dev, "usb_clk"); + if (IS_ERR(uclk)) { + dev_err(&pdev->dev, "failed to get uclk\n"); + retval = PTR_ERR(uclk); + goto err6; + } + } at91_start_hc(pdev); ohci_hcd_init(hcd_to_ohci(hcd)); @@ -173,6 +187,9 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, /* Error handling */ at91_stop_hc(pdev); + if (IS_ENABLED(CONFIG_COMMON_CLK)) + clk_put(uclk); + err6: clk_put(hclk); err5: clk_put(fclk); @@ -212,12 +229,12 @@ static void usb_hcd_at91_remove(struct usb_hcd *hcd, release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); + if (IS_ENABLED(CONFIG_COMMON_CLK)) + clk_put(uclk); clk_put(hclk); clk_put(fclk); clk_put(iclk); fclk = iclk = hclk = NULL; - - dev_set_drvdata(&pdev->dev, NULL); } /*-------------------------------------------------------------------------*/ @@ -225,7 +242,7 @@ static void usb_hcd_at91_remove(struct usb_hcd *hcd, static int ohci_at91_reset (struct usb_hcd *hcd) { - struct at91_usbh_data *board = hcd->self.controller->platform_data; + struct at91_usbh_data *board = dev_get_platdata(hcd->self.controller); struct ohci_hcd *ohci = hcd_to_ohci (hcd); int ret; @@ -280,7 +297,7 @@ static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port) */ static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf) { - struct at91_usbh_data *pdata = hcd->self.controller->platform_data; + struct at91_usbh_data *pdata = dev_get_platdata(hcd->self.controller); int length = ohci_hub_status_data(hcd, buf); int port; @@ -301,7 +318,7 @@ static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf) static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { - struct at91_usbh_data *pdata = hcd->self.controller->platform_data; + struct at91_usbh_data *pdata = dev_get_platdata(hcd->self.controller); struct usb_hub_descriptor *desc; int ret = -EINVAL; u32 *data = (u32 *)buf; @@ -461,7 +478,7 @@ static const struct hc_driver ohci_at91_hc_driver = { static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data) { struct platform_device *pdev = data; - struct at91_usbh_data *pdata = pdev->dev.platform_data; + struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev); int val, gpio, port; /* From the GPIO notifying the over-current situation, find @@ -567,7 +584,7 @@ static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) if (ret) return ret; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); if (pdata) { at91_for_each_port(i) { @@ -643,7 +660,7 @@ static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) static int ohci_hcd_at91_drv_remove(struct platform_device *pdev) { - struct at91_usbh_data *pdata = pdev->dev.platform_data; + struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev); int i; if (pdata) { diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c index 0b815a856811..9be59f11e051 100644 --- a/drivers/usb/host/ohci-da8xx.c +++ b/drivers/usb/host/ohci-da8xx.c @@ -85,7 +85,7 @@ static void ohci_da8xx_ocic_handler(struct da8xx_ohci_root_hub *hub, static int ohci_da8xx_init(struct usb_hcd *hcd) { struct device *dev = hcd->self.controller; - struct da8xx_ohci_root_hub *hub = dev->platform_data; + struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev); struct ohci_hcd *ohci = hcd_to_ohci(hcd); int result; u32 rh_a; @@ -171,7 +171,7 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { struct device *dev = hcd->self.controller; - struct da8xx_ohci_root_hub *hub = dev->platform_data; + struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev); int temp; switch (typeReq) { @@ -292,7 +292,7 @@ static const struct hc_driver ohci_da8xx_hc_driver = { static int usb_hcd_da8xx_probe(const struct hc_driver *driver, struct platform_device *pdev) { - struct da8xx_ohci_root_hub *hub = pdev->dev.platform_data; + struct da8xx_ohci_root_hub *hub = dev_get_platdata(&pdev->dev); struct usb_hcd *hcd; struct resource *mem; int error, irq; @@ -380,7 +380,7 @@ err0: static inline void usb_hcd_da8xx_remove(struct usb_hcd *hcd, struct platform_device *pdev) { - struct da8xx_ohci_root_hub *hub = pdev->dev.platform_data; + struct da8xx_ohci_root_hub *hub = dev_get_platdata(&pdev->dev); hub->ocic_notify(NULL); usb_remove_hcd(hcd); @@ -401,7 +401,6 @@ static int ohci_hcd_da8xx_drv_remove(struct platform_device *dev) struct usb_hcd *hcd = platform_get_drvdata(dev); usb_hcd_da8xx_remove(hcd, dev); - platform_set_drvdata(dev, NULL); return 0; } diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c index 8704e9fa5a80..84a20d5223b9 100644 --- a/drivers/usb/host/ohci-ep93xx.c +++ b/drivers/usb/host/ohci-ep93xx.c @@ -30,83 +30,6 @@ static struct clk *usb_host_clock; -static void ep93xx_start_hc(struct device *dev) -{ - clk_enable(usb_host_clock); -} - -static void ep93xx_stop_hc(struct device *dev) -{ - clk_disable(usb_host_clock); -} - -static int usb_hcd_ep93xx_probe(const struct hc_driver *driver, - struct platform_device *pdev) -{ - int retval; - struct usb_hcd *hcd; - - if (pdev->resource[1].flags != IORESOURCE_IRQ) { - dev_dbg(&pdev->dev, "resource[1] is not IORESOURCE_IRQ\n"); - return -ENOMEM; - } - - hcd = usb_create_hcd(driver, &pdev->dev, "ep93xx"); - if (hcd == NULL) - return -ENOMEM; - - hcd->rsrc_start = pdev->resource[0].start; - hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1; - if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { - usb_put_hcd(hcd); - retval = -EBUSY; - goto err1; - } - - hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); - if (hcd->regs == NULL) { - dev_dbg(&pdev->dev, "ioremap failed\n"); - retval = -ENOMEM; - goto err2; - } - - usb_host_clock = clk_get(&pdev->dev, NULL); - if (IS_ERR(usb_host_clock)) { - dev_dbg(&pdev->dev, "clk_get failed\n"); - retval = PTR_ERR(usb_host_clock); - goto err3; - } - - ep93xx_start_hc(&pdev->dev); - - ohci_hcd_init(hcd_to_ohci(hcd)); - - retval = usb_add_hcd(hcd, pdev->resource[1].start, 0); - if (retval == 0) - return retval; - - ep93xx_stop_hc(&pdev->dev); -err3: - iounmap(hcd->regs); -err2: - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); -err1: - usb_put_hcd(hcd); - - return retval; -} - -static void usb_hcd_ep93xx_remove(struct usb_hcd *hcd, - struct platform_device *pdev) -{ - usb_remove_hcd(hcd); - ep93xx_stop_hc(&pdev->dev); - clk_put(usb_host_clock); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - usb_put_hcd(hcd); -} - static int ohci_ep93xx_start(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci(hcd); @@ -147,15 +70,57 @@ static struct hc_driver ohci_ep93xx_hc_driver = { .start_port_reset = ohci_start_port_reset, }; -extern int usb_disabled(void); - static int ohci_hcd_ep93xx_drv_probe(struct platform_device *pdev) { + struct usb_hcd *hcd; + struct resource *res; + int irq; int ret; - ret = -ENODEV; - if (!usb_disabled()) - ret = usb_hcd_ep93xx_probe(&ohci_ep93xx_hc_driver, pdev); + if (usb_disabled()) + return -ENODEV; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENXIO; + + hcd = usb_create_hcd(&ohci_ep93xx_hc_driver, &pdev->dev, "ep93xx"); + if (!hcd) + return -ENOMEM; + + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + + hcd->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(hcd->regs)) { + ret = PTR_ERR(hcd->regs); + goto err_put_hcd; + } + + usb_host_clock = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(usb_host_clock)) { + ret = PTR_ERR(usb_host_clock); + goto err_put_hcd; + } + + clk_enable(usb_host_clock); + + ohci_hcd_init(hcd_to_ohci(hcd)); + + ret = usb_add_hcd(hcd, irq, 0); + if (ret) + goto err_clk_disable; + + return 0; + +err_clk_disable: + clk_disable(usb_host_clock); +err_put_hcd: + usb_put_hcd(hcd); return ret; } @@ -164,7 +129,9 @@ static int ohci_hcd_ep93xx_drv_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); - usb_hcd_ep93xx_remove(hcd, pdev); + usb_remove_hcd(hcd); + clk_disable(usb_host_clock); + usb_put_hcd(hcd); return 0; } @@ -179,7 +146,7 @@ static int ohci_hcd_ep93xx_drv_suspend(struct platform_device *pdev, pm_message_ msleep(5); ohci->next_statechange = jiffies; - ep93xx_stop_hc(&pdev->dev); + clk_disable(usb_host_clock); return 0; } @@ -192,7 +159,7 @@ static int ohci_hcd_ep93xx_drv_resume(struct platform_device *pdev) msleep(5); ohci->next_statechange = jiffies; - ep93xx_start_hc(&pdev->dev); + clk_enable(usb_host_clock); ohci_resume(hcd, false); return 0; diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index b0b542c14e31..dc6ee9adacf5 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -100,7 +100,7 @@ static const struct hc_driver exynos_ohci_hc_driver = { static int exynos_ohci_probe(struct platform_device *pdev) { - struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data; + struct exynos4_ohci_platdata *pdata = dev_get_platdata(&pdev->dev); struct exynos_ohci_hcd *exynos_ohci; struct usb_hcd *hcd; struct ohci_hcd *ohci; diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index fc627fd54116..8f6b695af6a4 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -79,23 +79,8 @@ static const char hcd_name [] = "ohci_hcd"; #include "pci-quirks.h" static void ohci_dump (struct ohci_hcd *ohci, int verbose); -static int ohci_init (struct ohci_hcd *ohci); static void ohci_stop (struct usb_hcd *hcd); -#if defined(CONFIG_PM) || defined(CONFIG_PCI) -static int ohci_restart (struct ohci_hcd *ohci); -#endif - -#ifdef CONFIG_PCI -static void sb800_prefetch(struct ohci_hcd *ohci, int on); -#else -static inline void sb800_prefetch(struct ohci_hcd *ohci, int on) -{ - return; -} -#endif - - #include "ohci-hub.c" #include "ohci-dbg.c" #include "ohci-mem.c" @@ -772,6 +757,32 @@ retry: return 0; } +/* ohci_setup routine for generic controller initialization */ + +int ohci_setup(struct usb_hcd *hcd) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + + ohci_hcd_init(ohci); + + return ohci_init(ohci); +} +EXPORT_SYMBOL_GPL(ohci_setup); + +/* ohci_start routine for generic controller start of all OHCI bus glue */ +static int ohci_start(struct usb_hcd *hcd) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + int ret; + + ret = ohci_run(ohci); + if (ret < 0) { + ohci_err(ohci, "can't start\n"); + ohci_stop(hcd); + } + return ret; +} + /*-------------------------------------------------------------------------*/ /* an interrupt happens */ @@ -927,8 +938,8 @@ static void ohci_stop (struct usb_hcd *hcd) if (quirk_nec(ohci)) flush_work(&ohci->nec_work); - ohci_usb_reset (ohci); ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); + ohci_usb_reset(ohci); free_irq(hcd->irq, hcd); hcd->irq = 0; @@ -953,12 +964,13 @@ static void ohci_stop (struct usb_hcd *hcd) #if defined(CONFIG_PM) || defined(CONFIG_PCI) /* must not be called from interrupt context */ -static int ohci_restart (struct ohci_hcd *ohci) +int ohci_restart(struct ohci_hcd *ohci) { int temp; int i; struct urb_priv *priv; + ohci_init(ohci); spin_lock_irq(&ohci->lock); ohci->rh_state = OHCI_RH_HALTED; @@ -1012,12 +1024,13 @@ static int ohci_restart (struct ohci_hcd *ohci) ohci_dbg(ohci, "restart complete\n"); return 0; } +EXPORT_SYMBOL_GPL(ohci_restart); #endif #ifdef CONFIG_PM -static int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup) +int ohci_suspend(struct usb_hcd *hcd, bool do_wakeup) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); unsigned long flags; @@ -1035,9 +1048,10 @@ static int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup) return 0; } +EXPORT_SYMBOL_GPL(ohci_suspend); -static int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated) +int ohci_resume(struct usb_hcd *hcd, bool hibernated) { struct ohci_hcd *ohci = hcd_to_ohci(hcd); int port; @@ -1085,20 +1099,79 @@ static int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated) return 0; } +EXPORT_SYMBOL_GPL(ohci_resume); #endif /*-------------------------------------------------------------------------*/ +/* + * Generic structure: This gets copied for platform drivers so that + * individual entries can be overridden as needed. + */ + +static const struct hc_driver ohci_hc_driver = { + .description = hcd_name, + .product_desc = "OHCI Host Controller", + .hcd_priv_size = sizeof(struct ohci_hcd), + + /* + * generic hardware linkage + */ + .irq = ohci_irq, + .flags = HCD_MEMORY | HCD_USB11, + + /* + * basic lifecycle operations + */ + .reset = ohci_setup, + .start = ohci_start, + .stop = ohci_stop, + .shutdown = ohci_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ohci_urb_enqueue, + .urb_dequeue = ohci_urb_dequeue, + .endpoint_disable = ohci_endpoint_disable, + + /* + * scheduling support + */ + .get_frame_number = ohci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ohci_hub_status_data, + .hub_control = ohci_hub_control, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, +#endif + .start_port_reset = ohci_start_port_reset, +}; + +void ohci_init_driver(struct hc_driver *drv, + const struct ohci_driver_overrides *over) +{ + /* Copy the generic table to drv and then apply the overrides */ + *drv = ohci_hc_driver; + + drv->product_desc = over->product_desc; + drv->hcd_priv_size += over->extra_priv_size; + if (over->reset) + drv->reset = over->reset; +} +EXPORT_SYMBOL_GPL(ohci_init_driver); + +/*-------------------------------------------------------------------------*/ + MODULE_AUTHOR (DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE ("GPL"); -#ifdef CONFIG_PCI -#include "ohci-pci.c" -#define PCI_DRIVER ohci_pci_driver -#endif - #if defined(CONFIG_ARCH_SA1100) && defined(CONFIG_SA1111) #include "ohci-sa1111.c" #define SA1111_DRIVER ohci_hcd_sa1111_driver @@ -1189,30 +1262,6 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ohci_hcd_tilegx_driver #endif -#ifdef CONFIG_USB_OHCI_HCD_PLATFORM -#include "ohci-platform.c" -#define PLATFORM_DRIVER ohci_platform_driver -#endif - -#if !defined(PCI_DRIVER) && \ - !defined(PLATFORM_DRIVER) && \ - !defined(OMAP1_PLATFORM_DRIVER) && \ - !defined(OMAP3_PLATFORM_DRIVER) && \ - !defined(OF_PLATFORM_DRIVER) && \ - !defined(SA1111_DRIVER) && \ - !defined(PS3_SYSTEM_BUS_DRIVER) && \ - !defined(SM501_OHCI_DRIVER) && \ - !defined(TMIO_OHCI_DRIVER) && \ - !defined(S3C2410_PLATFORM_DRIVER) && \ - !defined(EXYNOS_PLATFORM_DRIVER) && \ - !defined(EP93XX_PLATFORM_DRIVER) && \ - !defined(AT91_PLATFORM_DRIVER) && \ - !defined(NXP_PLATFORM_DRIVER) && \ - !defined(DAVINCI_PLATFORM_DRIVER) && \ - !defined(SPEAR_PLATFORM_DRIVER) -#error "missing bus glue for ohci-hcd" -#endif - static int __init ohci_hcd_mod_init(void) { int retval = 0; @@ -1269,12 +1318,6 @@ static int __init ohci_hcd_mod_init(void) goto error_sa1111; #endif -#ifdef PCI_DRIVER - retval = pci_register_driver(&PCI_DRIVER); - if (retval < 0) - goto error_pci; -#endif - #ifdef SM501_OHCI_DRIVER retval = platform_driver_register(&SM501_OHCI_DRIVER); if (retval < 0) @@ -1368,10 +1411,6 @@ static int __init ohci_hcd_mod_init(void) platform_driver_unregister(&SM501_OHCI_DRIVER); error_sm501: #endif -#ifdef PCI_DRIVER - pci_unregister_driver(&PCI_DRIVER); - error_pci: -#endif #ifdef SA1111_DRIVER sa1111_driver_unregister(&SA1111_DRIVER); error_sa1111: @@ -1436,9 +1475,6 @@ static void __exit ohci_hcd_mod_exit(void) #ifdef SM501_OHCI_DRIVER platform_driver_unregister(&SM501_OHCI_DRIVER); #endif -#ifdef PCI_DRIVER - pci_unregister_driver(&PCI_DRIVER); -#endif #ifdef SA1111_DRIVER sa1111_driver_unregister(&SA1111_DRIVER); #endif diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c index 60ff4220e8b4..2347ab83f046 100644 --- a/drivers/usb/host/ohci-hub.c +++ b/drivers/usb/host/ohci-hub.c @@ -176,7 +176,6 @@ __acquires(ohci->lock) if (status == -EBUSY) { if (!autostopped) { spin_unlock_irq (&ohci->lock); - (void) ohci_init (ohci); status = ohci_restart (ohci); usb_root_hub_lost_power(hcd->self.root_hub); diff --git a/drivers/usb/host/ohci-jz4740.c b/drivers/usb/host/ohci-jz4740.c index 8062bb9dea16..d4ef53990d73 100644 --- a/drivers/usb/host/ohci-jz4740.c +++ b/drivers/usb/host/ohci-jz4740.c @@ -221,7 +221,6 @@ static int jz4740_ohci_probe(struct platform_device *pdev) return 0; err_disable: - platform_set_drvdata(pdev, NULL); if (jz4740_ohci->vbus) { regulator_disable(jz4740_ohci->vbus); regulator_put(jz4740_ohci->vbus); @@ -246,8 +245,6 @@ static int jz4740_ohci_remove(struct platform_device *pdev) usb_remove_hcd(hcd); - platform_set_drvdata(pdev, NULL); - if (jz4740_ohci->vbus) { regulator_disable(jz4740_ohci->vbus); regulator_put(jz4740_ohci->vbus); diff --git a/drivers/usb/host/ohci-nxp.c b/drivers/usb/host/ohci-nxp.c index 5d7eb72c5064..7d7d507d54e8 100644 --- a/drivers/usb/host/ohci-nxp.c +++ b/drivers/usb/host/ohci-nxp.c @@ -351,7 +351,6 @@ static int usb_hcd_nxp_remove(struct platform_device *pdev) usb_remove_hcd(hcd); nxp_stop_hc(); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); clk_disable(usb_pll_clk); clk_put(usb_pll_clk); @@ -360,8 +359,6 @@ static int usb_hcd_nxp_remove(struct platform_device *pdev) i2c_unregister_device(isp1301_i2c_client); isp1301_i2c_client = NULL; - platform_set_drvdata(pdev, NULL); - return 0; } diff --git a/drivers/usb/host/ohci-octeon.c b/drivers/usb/host/ohci-octeon.c index d44430d009f8..342dc7e543b8 100644 --- a/drivers/usb/host/ohci-octeon.c +++ b/drivers/usb/host/ohci-octeon.c @@ -196,8 +196,6 @@ static int ohci_octeon_drv_remove(struct platform_device *pdev) release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); - platform_set_drvdata(pdev, NULL); - return 0; } diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index b1d32fb4a7ae..31d3a12eb486 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -191,7 +191,7 @@ static void start_hnp(struct ohci_hcd *ohci) static int ohci_omap_init(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci(hcd); - struct omap_usb_config *config = hcd->self.controller->platform_data; + struct omap_usb_config *config = dev_get_platdata(hcd->self.controller); int need_transceiver = (config->otg != 0); int ret; @@ -427,7 +427,7 @@ ohci_omap_start (struct usb_hcd *hcd) if (!host_enabled) return 0; - config = hcd->self.controller->platform_data; + config = dev_get_platdata(hcd->self.controller); if (config->otg || config->rwc) { ohci->hc_control = OHCI_CTRL_RWC; writel(OHCI_CTRL_RWC, &ohci->regs->control); @@ -498,7 +498,6 @@ static int ohci_hcd_omap_drv_remove(struct platform_device *dev) struct usb_hcd *hcd = platform_get_drvdata(dev); usb_hcd_omap_remove(hcd, dev); - platform_set_drvdata(dev, NULL); return 0; } diff --git a/drivers/usb/host/ohci-omap3.c b/drivers/usb/host/ohci-omap3.c index 8663851c8d8e..a09af26f69ed 100644 --- a/drivers/usb/host/ohci-omap3.c +++ b/drivers/usb/host/ohci-omap3.c @@ -231,14 +231,6 @@ static int ohci_hcd_omap3_remove(struct platform_device *pdev) return 0; } -static void ohci_hcd_omap3_shutdown(struct platform_device *pdev) -{ - struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev); - - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); -} - static const struct of_device_id omap_ohci_dt_ids[] = { { .compatible = "ti,ohci-omap3" }, { } @@ -249,10 +241,10 @@ MODULE_DEVICE_TABLE(of, omap_ohci_dt_ids); static struct platform_driver ohci_hcd_omap3_driver = { .probe = ohci_hcd_omap3_probe, .remove = ohci_hcd_omap3_remove, - .shutdown = ohci_hcd_omap3_shutdown, + .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "ohci-omap3", - .of_match_table = of_match_ptr(omap_ohci_dt_ids), + .of_match_table = omap_ohci_dt_ids, }, }; diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index 951514ef446d..ec337c2bd5e0 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -14,12 +14,19 @@ * This file is licenced under the GPL. */ -#ifndef CONFIG_PCI -#error "This file is PCI bus glue. CONFIG_PCI must be defined." -#endif - -#include <linux/pci.h> #include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> + +#include "ohci.h" +#include "pci-quirks.h" + +#define DRIVER_DESC "OHCI PCI platform driver" + +static const char hcd_name[] = "ohci-pci"; /*-------------------------------------------------------------------------*/ @@ -123,13 +130,6 @@ static void ohci_quirk_nec_worker(struct work_struct *work) struct ohci_hcd *ohci = container_of(work, struct ohci_hcd, nec_work); int status; - status = ohci_init(ohci); - if (status != 0) { - ohci_err(ohci, "Restarting NEC controller failed in %s, %d\n", - "ohci_init", status); - return; - } - status = ohci_restart(ohci); if (status != 0) ohci_err(ohci, "Restarting NEC controller failed in %s, %d\n", @@ -175,19 +175,6 @@ static int ohci_quirk_amd700(struct usb_hcd *hcd) return 0; } -static void sb800_prefetch(struct ohci_hcd *ohci, int on) -{ - struct pci_dev *pdev; - u16 misc; - - pdev = to_pci_dev(ohci_to_hcd(ohci)->self.controller); - pci_read_config_word(pdev, 0x50, &misc); - if (on == 0) - pci_write_config_word(pdev, 0x50, misc & 0xfcff); - else - pci_write_config_word(pdev, 0x50, misc | 0x0300); -} - /* List of quirks for OHCI */ static const struct pci_device_id ohci_pci_quirks[] = { { @@ -249,10 +236,10 @@ static const struct pci_device_id ohci_pci_quirks[] = { static int ohci_pci_reset (struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); + struct pci_dev *pdev = to_pci_dev(hcd->self.controller); int ret = 0; if (hcd->self.controller) { - struct pci_dev *pdev = to_pci_dev(hcd->self.controller); const struct pci_device_id *quirk_id; quirk_id = pci_match_id(ohci_pci_quirks, pdev); @@ -262,94 +249,25 @@ static int ohci_pci_reset (struct usb_hcd *hcd) ret = quirk(hcd); } } - if (ret == 0) { - ohci_hcd_init (ohci); - return ohci_init (ohci); - } - return ret; -} - - -static int ohci_pci_start (struct usb_hcd *hcd) -{ - struct ohci_hcd *ohci = hcd_to_ohci (hcd); - int ret; - -#ifdef CONFIG_PM /* avoid warnings about unused pdev */ - if (hcd->self.controller) { - struct pci_dev *pdev = to_pci_dev(hcd->self.controller); - - /* RWC may not be set for add-in PCI cards, since boot - * firmware probably ignored them. This transfers PCI - * PM wakeup capabilities. - */ - if (device_can_wakeup(&pdev->dev)) - ohci->hc_control |= OHCI_CTRL_RWC; - } -#endif /* CONFIG_PM */ - ret = ohci_run (ohci); - if (ret < 0) { - ohci_err (ohci, "can't start\n"); - ohci_stop (hcd); - } + if (ret == 0) + ret = ohci_setup(hcd); + /* + * After ohci setup RWC may not be set for add-in PCI cards. + * This transfers PCI PM wakeup capabilities. + */ + if (device_can_wakeup(&pdev->dev)) + ohci->hc_control |= OHCI_CTRL_RWC; return ret; } +static struct hc_driver __read_mostly ohci_pci_hc_driver; -/*-------------------------------------------------------------------------*/ - -static const struct hc_driver ohci_pci_hc_driver = { - .description = hcd_name, - .product_desc = "OHCI Host Controller", - .hcd_priv_size = sizeof(struct ohci_hcd), - - /* - * generic hardware linkage - */ - .irq = ohci_irq, - .flags = HCD_MEMORY | HCD_USB11, - - /* - * basic lifecycle operations - */ +static const struct ohci_driver_overrides pci_overrides __initconst = { + .product_desc = "OHCI PCI host controller", .reset = ohci_pci_reset, - .start = ohci_pci_start, - .stop = ohci_stop, - .shutdown = ohci_shutdown, - -#ifdef CONFIG_PM - .pci_suspend = ohci_suspend, - .pci_resume = ohci_resume, -#endif - - /* - * managing i/o requests and associated device resources - */ - .urb_enqueue = ohci_urb_enqueue, - .urb_dequeue = ohci_urb_dequeue, - .endpoint_disable = ohci_endpoint_disable, - - /* - * scheduling support - */ - .get_frame_number = ohci_get_frame, - - /* - * root hub support - */ - .hub_status_data = ohci_hub_status_data, - .hub_control = ohci_hub_control, -#ifdef CONFIG_PM - .bus_suspend = ohci_bus_suspend, - .bus_resume = ohci_bus_resume, -#endif - .start_port_reset = ohci_start_port_reset, }; -/*-------------------------------------------------------------------------*/ - - static const struct pci_device_id pci_ids [] = { { /* handle any USB OHCI controller */ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0), @@ -371,9 +289,37 @@ static struct pci_driver ohci_pci_driver = { .remove = usb_hcd_pci_remove, .shutdown = usb_hcd_pci_shutdown, -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_PM .driver = { .pm = &usb_hcd_pci_pm_ops }, #endif }; + +static int __init ohci_pci_init(void) +{ + if (usb_disabled()) + return -ENODEV; + + pr_info("%s: " DRIVER_DESC "\n", hcd_name); + + ohci_init_driver(&ohci_pci_hc_driver, &pci_overrides); + +#ifdef CONFIG_PM + /* Entries for the PCI suspend/resume callbacks are special */ + ohci_pci_hc_driver.pci_suspend = ohci_suspend; + ohci_pci_hc_driver.pci_resume = ohci_resume; +#endif + + return pci_register_driver(&ohci_pci_driver); +} +module_init(ohci_pci_init); + +static void __exit ohci_pci_cleanup(void) +{ + pci_unregister_driver(&ohci_pci_driver); +} +module_exit(ohci_pci_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c index c3e7287f7921..a4c6410f0ed4 100644 --- a/drivers/usb/host/ohci-platform.c +++ b/drivers/usb/host/ohci-platform.c @@ -13,16 +13,28 @@ * * Licensed under the GNU/GPL. See COPYING for details. */ + +#include <linux/hrtimer.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> #include <linux/err.h> #include <linux/platform_device.h> #include <linux/usb/ohci_pdriver.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> + +#include "ohci.h" + +#define DRIVER_DESC "OHCI generic platform driver" + +static const char hcd_name[] = "ohci-platform"; static int ohci_platform_reset(struct usb_hcd *hcd) { struct platform_device *pdev = to_platform_device(hcd->self.controller); - struct usb_ohci_pdata *pdata = pdev->dev.platform_data; + struct usb_ohci_pdata *pdata = dev_get_platdata(&pdev->dev); struct ohci_hcd *ohci = hcd_to_ohci(hcd); - int err; if (pdata->big_endian_desc) ohci->flags |= OHCI_QUIRK_BE_DESC; @@ -30,65 +42,24 @@ static int ohci_platform_reset(struct usb_hcd *hcd) ohci->flags |= OHCI_QUIRK_BE_MMIO; if (pdata->no_big_frame_no) ohci->flags |= OHCI_QUIRK_FRAME_NO; - - ohci_hcd_init(ohci); - if (pdata->num_ports) ohci->num_ports = pdata->num_ports; - err = ohci_init(ohci); - - return err; -} - -static int ohci_platform_start(struct usb_hcd *hcd) -{ - struct ohci_hcd *ohci = hcd_to_ohci(hcd); - int err; - - err = ohci_run(ohci); - if (err < 0) { - ohci_err(ohci, "can't start\n"); - ohci_stop(hcd); - } - - return err; + return ohci_setup(hcd); } -static const struct hc_driver ohci_platform_hc_driver = { - .description = hcd_name, - .product_desc = "Generic Platform OHCI Controller", - .hcd_priv_size = sizeof(struct ohci_hcd), +static struct hc_driver __read_mostly ohci_platform_hc_driver; - .irq = ohci_irq, - .flags = HCD_MEMORY | HCD_USB11, - - .reset = ohci_platform_reset, - .start = ohci_platform_start, - .stop = ohci_stop, - .shutdown = ohci_shutdown, - - .urb_enqueue = ohci_urb_enqueue, - .urb_dequeue = ohci_urb_dequeue, - .endpoint_disable = ohci_endpoint_disable, - - .get_frame_number = ohci_get_frame, - - .hub_status_data = ohci_hub_status_data, - .hub_control = ohci_hub_control, -#ifdef CONFIG_PM - .bus_suspend = ohci_bus_suspend, - .bus_resume = ohci_bus_resume, -#endif - - .start_port_reset = ohci_start_port_reset, +static const struct ohci_driver_overrides platform_overrides __initconst = { + .product_desc = "Generic Platform OHCI controller", + .reset = ohci_platform_reset, }; static int ohci_platform_probe(struct platform_device *dev) { struct usb_hcd *hcd; struct resource *res_mem; - struct usb_ohci_pdata *pdata = dev->dev.platform_data; + struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev); int irq; int err = -ENOMEM; @@ -153,11 +124,10 @@ err_power: static int ohci_platform_remove(struct platform_device *dev) { struct usb_hcd *hcd = platform_get_drvdata(dev); - struct usb_ohci_pdata *pdata = dev->dev.platform_data; + struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev); usb_remove_hcd(hcd); usb_put_hcd(hcd); - platform_set_drvdata(dev, NULL); if (pdata->power_off) pdata->power_off(dev); @@ -169,7 +139,7 @@ static int ohci_platform_remove(struct platform_device *dev) static int ohci_platform_suspend(struct device *dev) { - struct usb_ohci_pdata *pdata = dev->platform_data; + struct usb_ohci_pdata *pdata = dev_get_platdata(dev); struct platform_device *pdev = container_of(dev, struct platform_device, dev); @@ -182,7 +152,7 @@ static int ohci_platform_suspend(struct device *dev) static int ohci_platform_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - struct usb_ohci_pdata *pdata = dev->platform_data; + struct usb_ohci_pdata *pdata = dev_get_platdata(dev); struct platform_device *pdev = container_of(dev, struct platform_device, dev); @@ -223,3 +193,26 @@ static struct platform_driver ohci_platform_driver = { .pm = &ohci_platform_pm_ops, } }; + +static int __init ohci_platform_init(void) +{ + if (usb_disabled()) + return -ENODEV; + + pr_info("%s: " DRIVER_DESC "\n", hcd_name); + + ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides); + return platform_driver_register(&ohci_platform_driver); +} +module_init(ohci_platform_init); + +static void __exit ohci_platform_cleanup(void) +{ + platform_driver_unregister(&ohci_platform_driver); +} +module_exit(ohci_platform_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Hauke Mehrtens"); +MODULE_AUTHOR("Alan Stern"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c index 64c2ed9ff95e..75f5a1e2f01e 100644 --- a/drivers/usb/host/ohci-ppc-of.c +++ b/drivers/usb/host/ohci-ppc-of.c @@ -185,8 +185,7 @@ err_rmr: static int ohci_hcd_ppc_of_remove(struct platform_device *op) { - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); - dev_set_drvdata(&op->dev, NULL); + struct usb_hcd *hcd = platform_get_drvdata(op); dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n"); @@ -201,15 +200,6 @@ static int ohci_hcd_ppc_of_remove(struct platform_device *op) return 0; } -static void ohci_hcd_ppc_of_shutdown(struct platform_device *op) -{ - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); - - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); -} - - static const struct of_device_id ohci_hcd_ppc_of_match[] = { #ifdef CONFIG_USB_OHCI_HCD_PPC_OF_BE { @@ -244,7 +234,7 @@ MODULE_DEVICE_TABLE(of, ohci_hcd_ppc_of_match); static struct platform_driver ohci_hcd_ppc_of_driver = { .probe = ohci_hcd_ppc_of_probe, .remove = ohci_hcd_ppc_of_remove, - .shutdown = ohci_hcd_ppc_of_shutdown, + .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "ppc-of-ohci", .owner = THIS_MODULE, diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c index 279b2ef17411..93371a235e82 100644 --- a/drivers/usb/host/ohci-pxa27x.c +++ b/drivers/usb/host/ohci-pxa27x.c @@ -219,7 +219,7 @@ static int pxa27x_start_hc(struct pxa27x_ohci *ohci, struct device *dev) struct pxaohci_platform_data *inf; uint32_t uhchr; - inf = dev->platform_data; + inf = dev_get_platdata(dev); clk_prepare_enable(ohci->clk); @@ -256,7 +256,7 @@ static void pxa27x_stop_hc(struct pxa27x_ohci *ohci, struct device *dev) struct pxaohci_platform_data *inf; uint32_t uhccoms; - inf = dev->platform_data; + inf = dev_get_platdata(dev); if (cpu_is_pxa3xx()) pxa3xx_u2d_stop_hc(&ohci_to_hcd(&ohci->ohci)->self); @@ -364,7 +364,7 @@ int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device if (retval) return retval; - inf = pdev->dev.platform_data; + inf = dev_get_platdata(&pdev->dev); if (!inf) return -ENODEV; @@ -556,7 +556,6 @@ static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev) struct usb_hcd *hcd = platform_get_drvdata(pdev); usb_hcd_pxa27x_remove(hcd, pdev); - platform_set_drvdata(pdev, NULL); return 0; } @@ -578,7 +577,7 @@ static int ohci_hcd_pxa27x_drv_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd); - struct pxaohci_platform_data *inf = dev->platform_data; + struct pxaohci_platform_data *inf = dev_get_platdata(dev); int status; if (time_before(jiffies, ohci->ohci.next_statechange)) diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c index 88731b7c5f42..df4a6707322d 100644 --- a/drivers/usb/host/ohci-q.c +++ b/drivers/usb/host/ohci-q.c @@ -41,6 +41,7 @@ finish_urb(struct ohci_hcd *ohci, struct urb *urb, int status) __releases(ohci->lock) __acquires(ohci->lock) { + struct device *dev = ohci_to_hcd(ohci)->self.controller; // ASSERT (urb->hcpriv != 0); urb_free_priv (ohci, urb->hcpriv); @@ -55,7 +56,7 @@ __acquires(ohci->lock) if (quirk_amdiso(ohci)) usb_amd_quirk_pll_enable(); if (quirk_amdprefetch(ohci)) - sb800_prefetch(ohci, 0); + sb800_prefetch(dev, 0); } break; case PIPE_INTERRUPT: @@ -580,6 +581,7 @@ static void td_submit_urb ( struct urb *urb ) { struct urb_priv *urb_priv = urb->hcpriv; + struct device *dev = ohci_to_hcd(ohci)->self.controller; dma_addr_t data; int data_len = urb->transfer_buffer_length; int cnt = 0; @@ -689,7 +691,7 @@ static void td_submit_urb ( if (quirk_amdiso(ohci)) usb_amd_quirk_pll_disable(); if (quirk_amdprefetch(ohci)) - sb800_prefetch(ohci, 1); + sb800_prefetch(dev, 1); } periodic = ohci_to_hcd(ohci)->self.bandwidth_isoc_reqs++ == 0 && ohci_to_hcd(ohci)->self.bandwidth_int_reqs == 0; diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c index e125770b893c..4919afa4125e 100644 --- a/drivers/usb/host/ohci-s3c2410.c +++ b/drivers/usb/host/ohci-s3c2410.c @@ -38,12 +38,12 @@ static void s3c2410_hcd_oc(struct s3c2410_hcd_info *info, int port_oc); static struct s3c2410_hcd_info *to_s3c2410_info(struct usb_hcd *hcd) { - return hcd->self.controller->platform_data; + return dev_get_platdata(hcd->self.controller); } static void s3c2410_start_hc(struct platform_device *dev, struct usb_hcd *hcd) { - struct s3c2410_hcd_info *info = dev->dev.platform_data; + struct s3c2410_hcd_info *info = dev_get_platdata(&dev->dev); dev_dbg(&dev->dev, "s3c2410_start_hc:\n"); @@ -63,7 +63,7 @@ static void s3c2410_start_hc(struct platform_device *dev, struct usb_hcd *hcd) static void s3c2410_stop_hc(struct platform_device *dev) { - struct s3c2410_hcd_info *info = dev->dev.platform_data; + struct s3c2410_hcd_info *info = dev_get_platdata(&dev->dev); dev_dbg(&dev->dev, "s3c2410_stop_hc:\n"); @@ -339,10 +339,11 @@ static int usb_hcd_s3c2410_probe(const struct hc_driver *driver, struct platform_device *dev) { struct usb_hcd *hcd = NULL; + struct s3c2410_hcd_info *info = dev_get_platdata(&dev->dev); int retval; - s3c2410_usb_set_power(dev->dev.platform_data, 1, 1); - s3c2410_usb_set_power(dev->dev.platform_data, 2, 1); + s3c2410_usb_set_power(info, 1, 1); + s3c2410_usb_set_power(info, 2, 1); hcd = usb_create_hcd(driver, &dev->dev, "s3c24xx"); if (hcd == NULL) diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c index 3b5b908fd47b..d479d5ddab88 100644 --- a/drivers/usb/host/ohci-sm501.c +++ b/drivers/usb/host/ohci-sm501.c @@ -207,7 +207,6 @@ static int ohci_hcd_sm501_drv_remove(struct platform_device *pdev) sm501_modify_reg(pdev->dev.parent, SM501_IRQ_MASK, 0, 1 << 6); sm501_unit_power(pdev->dev.parent, SM501_GATE_USB_HOST, 0); - platform_set_drvdata(pdev, NULL); return 0; } diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c index 3e19e0170d11..cc9dd9e4f05e 100644 --- a/drivers/usb/host/ohci-spear.c +++ b/drivers/usb/host/ohci-spear.c @@ -179,8 +179,6 @@ static int spear_ohci_hcd_drv_remove(struct platform_device *pdev) spear_stop_ohci(ohci_p); usb_put_hcd(hcd); - - platform_set_drvdata(pdev, NULL); return 0; } @@ -232,7 +230,7 @@ static struct platform_driver spear_ohci_hcd_driver = { .driver = { .owner = THIS_MODULE, .name = "spear-ohci", - .of_match_table = of_match_ptr(spear_ohci_id_table), + .of_match_table = spear_ohci_id_table, }, }; diff --git a/drivers/usb/host/ohci-tilegx.c b/drivers/usb/host/ohci-tilegx.c index ea73009de623..22540ab71f55 100644 --- a/drivers/usb/host/ohci-tilegx.c +++ b/drivers/usb/host/ohci-tilegx.c @@ -95,7 +95,7 @@ static const struct hc_driver ohci_tilegx_hc_driver = { static int ohci_hcd_tilegx_drv_probe(struct platform_device *pdev) { struct usb_hcd *hcd; - struct tilegx_usb_platform_data *pdata = pdev->dev.platform_data; + struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); pte_t pte = { 0 }; int my_cpu = smp_processor_id(); int ret; @@ -175,14 +175,13 @@ err_hcd: static int ohci_hcd_tilegx_drv_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); - struct tilegx_usb_platform_data* pdata = pdev->dev.platform_data; + struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); usb_remove_hcd(hcd); usb_put_hcd(hcd); tilegx_stop_ohc(); gxio_usb_host_destroy(&pdata->usb_ctx); destroy_irq(pdata->irq); - platform_set_drvdata(pdev, NULL); return 0; } diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c index 5e3a6deb62b1..ecb09a5ada9c 100644 --- a/drivers/usb/host/ohci-tmio.c +++ b/drivers/usb/host/ohci-tmio.c @@ -287,8 +287,6 @@ static int ohci_hcd_tmio_drv_remove(struct platform_device *dev) iounmap(tmio->ccr); usb_put_hcd(hcd); - platform_set_drvdata(dev, NULL); - return 0; } diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h index d3299143d9e2..e2e5faa5a402 100644 --- a/drivers/usb/host/ohci.h +++ b/drivers/usb/host/ohci.h @@ -421,6 +421,9 @@ struct ohci_hcd { struct dentry *debug_periodic; struct dentry *debug_registers; #endif + /* platform-specific data -- must come last */ + unsigned long priv[0] __aligned(sizeof(s64)); + }; #ifdef CONFIG_PCI @@ -718,3 +721,20 @@ static inline u32 roothub_status (struct ohci_hcd *hc) { return ohci_readl (hc, &hc->regs->roothub.status); } static inline u32 roothub_portstatus (struct ohci_hcd *hc, int i) { return read_roothub (hc, portstatus [i], 0xffe0fce0); } + +/* Declarations of things exported for use by ohci platform drivers */ + +struct ohci_driver_overrides { + const char *product_desc; + size_t extra_priv_size; + int (*reset)(struct usb_hcd *hcd); +}; + +extern void ohci_init_driver(struct hc_driver *drv, + const struct ohci_driver_overrides *over); +extern int ohci_restart(struct ohci_hcd *ohci); +extern int ohci_setup(struct usb_hcd *hcd); +#ifdef CONFIG_PM +extern int ohci_suspend(struct usb_hcd *hcd, bool do_wakeup); +extern int ohci_resume(struct usb_hcd *hcd, bool hibernated); +#endif diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index 0f401dbfaf07..4a6df2d8f902 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -3874,7 +3874,6 @@ static int oxu_drv_probe(struct platform_device *pdev) error_init: kfree(info); - platform_set_drvdata(pdev, NULL); error_alloc: iounmap(base); @@ -3907,7 +3906,6 @@ static int oxu_drv_remove(struct platform_device *pdev) release_mem_region(memstart, memlen); kfree(info); - platform_set_drvdata(pdev, NULL); return 0; } diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 4c338ec03a07..2c76ef1320ea 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -91,6 +91,19 @@ static struct amd_chipset_info { static DEFINE_SPINLOCK(amd_lock); +void sb800_prefetch(struct device *dev, int on) +{ + u16 misc; + struct pci_dev *pdev = to_pci_dev(dev); + + pci_read_config_word(pdev, 0x50, &misc); + if (on == 0) + pci_write_config_word(pdev, 0x50, misc & 0xfcff); + else + pci_write_config_word(pdev, 0x50, misc | 0x0300); +} +EXPORT_SYMBOL_GPL(sb800_prefetch); + int usb_amd_find_chipset_info(void) { u8 rev = 0; @@ -722,32 +735,6 @@ static int handshake(void __iomem *ptr, u32 mask, u32 done, return -ETIMEDOUT; } -#define PCI_DEVICE_ID_INTEL_LYNX_POINT_XHCI 0x8C31 -#define PCI_DEVICE_ID_INTEL_LYNX_POINT_LP_XHCI 0x9C31 - -bool usb_is_intel_ppt_switchable_xhci(struct pci_dev *pdev) -{ - return pdev->class == PCI_CLASS_SERIAL_USB_XHCI && - pdev->vendor == PCI_VENDOR_ID_INTEL && - pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI; -} - -/* The Intel Lynx Point chipset also has switchable ports. */ -bool usb_is_intel_lpt_switchable_xhci(struct pci_dev *pdev) -{ - return pdev->class == PCI_CLASS_SERIAL_USB_XHCI && - pdev->vendor == PCI_VENDOR_ID_INTEL && - (pdev->device == PCI_DEVICE_ID_INTEL_LYNX_POINT_XHCI || - pdev->device == PCI_DEVICE_ID_INTEL_LYNX_POINT_LP_XHCI); -} - -bool usb_is_intel_switchable_xhci(struct pci_dev *pdev) -{ - return usb_is_intel_ppt_switchable_xhci(pdev) || - usb_is_intel_lpt_switchable_xhci(pdev); -} -EXPORT_SYMBOL_GPL(usb_is_intel_switchable_xhci); - /* * Intel's Panther Point chipset has two host controllers (EHCI and xHCI) that * share some number of ports. These ports can be switched between either @@ -766,9 +753,23 @@ EXPORT_SYMBOL_GPL(usb_is_intel_switchable_xhci); * terminations before switching the USB 2.0 wires over, so that USB 3.0 * devices connect at SuperSpeed, rather than at USB 2.0 speeds. */ -void usb_enable_xhci_ports(struct pci_dev *xhci_pdev) +void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev) { u32 ports_available; + bool ehci_found = false; + struct pci_dev *companion = NULL; + + /* make sure an intel EHCI controller exists */ + for_each_pci_dev(companion) { + if (companion->class == PCI_CLASS_SERIAL_USB_EHCI && + companion->vendor == PCI_VENDOR_ID_INTEL) { + ehci_found = true; + break; + } + } + + if (!ehci_found) + return; /* Don't switchover the ports if the user hasn't compiled the xHCI * driver. Otherwise they will see "dead" USB ports that don't power @@ -827,7 +828,7 @@ void usb_enable_xhci_ports(struct pci_dev *xhci_pdev) dev_dbg(&xhci_pdev->dev, "USB 2.0 ports that are now switched over " "to xHCI: 0x%x\n", ports_available); } -EXPORT_SYMBOL_GPL(usb_enable_xhci_ports); +EXPORT_SYMBOL_GPL(usb_enable_intel_xhci_ports); void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) { @@ -908,8 +909,8 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev) writel(val, base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET); hc_init: - if (usb_is_intel_switchable_xhci(pdev)) - usb_enable_xhci_ports(pdev); + if (pdev->vendor == PCI_VENDOR_ID_INTEL) + usb_enable_intel_xhci_ports(pdev); op_reg_base = base + XHCI_HC_LENGTH(readl(base)); diff --git a/drivers/usb/host/pci-quirks.h b/drivers/usb/host/pci-quirks.h index 7f69a39163ce..ed6700d00fe6 100644 --- a/drivers/usb/host/pci-quirks.h +++ b/drivers/usb/host/pci-quirks.h @@ -8,14 +8,16 @@ int usb_amd_find_chipset_info(void); void usb_amd_dev_put(void); void usb_amd_quirk_pll_disable(void); void usb_amd_quirk_pll_enable(void); -bool usb_is_intel_switchable_xhci(struct pci_dev *pdev); -void usb_enable_xhci_ports(struct pci_dev *xhci_pdev); +void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev); void usb_disable_xhci_ports(struct pci_dev *xhci_pdev); +void sb800_prefetch(struct device *dev, int on); #else +struct pci_dev; static inline void usb_amd_quirk_pll_disable(void) {} static inline void usb_amd_quirk_pll_enable(void) {} static inline void usb_amd_dev_put(void) {} static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {} +static inline void sb800_prefetch(struct device *dev, int on) {} #endif /* CONFIG_PCI */ #endif /* __LINUX_USB_PCI_QUIRKS_H */ diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index a6fd8f5371df..2ad004ae747c 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -2393,7 +2393,7 @@ static const struct dev_pm_ops r8a66597_dev_pm_ops = { static int r8a66597_remove(struct platform_device *pdev) { - struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); + struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); del_timer_sync(&r8a66597->rh_timer); @@ -2466,8 +2466,8 @@ static int r8a66597_probe(struct platform_device *pdev) } r8a66597 = hcd_to_r8a66597(hcd); memset(r8a66597, 0, sizeof(struct r8a66597)); - dev_set_drvdata(&pdev->dev, r8a66597); - r8a66597->pdata = pdev->dev.platform_data; + platform_set_drvdata(pdev, r8a66597); + r8a66597->pdata = dev_get_platdata(&pdev->dev); r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; if (r8a66597->pdata->on_chip) { diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c index b2ec7fe758dd..5477bf5df218 100644 --- a/drivers/usb/host/sl811-hcd.c +++ b/drivers/usb/host/sl811-hcd.c @@ -48,6 +48,8 @@ #include <linux/usb/hcd.h> #include <linux/platform_device.h> #include <linux/prefetch.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> #include <asm/io.h> #include <asm/irq.h> @@ -63,11 +65,6 @@ MODULE_ALIAS("platform:sl811-hcd"); #define DRIVER_VERSION "19 May 2005" - -#ifndef DEBUG -# define STUB_DEBUG_FILE -#endif - /* for now, use only one transfer register bank */ #undef USE_B @@ -100,7 +97,8 @@ static void port_power(struct sl811 *sl811, int is_on) if (sl811->board && sl811->board->port_power) { /* switch VBUS, at 500mA unless hub power budget gets set */ - DBG("power %s\n", is_on ? "on" : "off"); + dev_dbg(hcd->self.controller, "power %s\n", + is_on ? "on" : "off"); sl811->board->port_power(hcd->self.controller, is_on); } @@ -282,7 +280,7 @@ static inline void sofirq_on(struct sl811 *sl811) { if (sl811->irq_enable & SL11H_INTMASK_SOFINTR) return; - VDBG("sof irq on\n"); + dev_dbg(sl811_to_hcd(sl811)->self.controller, "sof irq on\n"); sl811->irq_enable |= SL11H_INTMASK_SOFINTR; } @@ -290,7 +288,7 @@ static inline void sofirq_off(struct sl811 *sl811) { if (!(sl811->irq_enable & SL11H_INTMASK_SOFINTR)) return; - VDBG("sof irq off\n"); + dev_dbg(sl811_to_hcd(sl811)->self.controller, "sof irq off\n"); sl811->irq_enable &= ~SL11H_INTMASK_SOFINTR; } @@ -338,7 +336,8 @@ static struct sl811h_ep *start(struct sl811 *sl811, u8 bank) } if (unlikely(list_empty(&ep->hep->urb_list))) { - DBG("empty %p queue?\n", ep); + dev_dbg(sl811_to_hcd(sl811)->self.controller, + "empty %p queue?\n", ep); return NULL; } @@ -391,7 +390,8 @@ static struct sl811h_ep *start(struct sl811 *sl811, u8 bank) status_packet(sl811, ep, urb, bank, control); break; default: - DBG("bad ep%p pid %02x\n", ep, ep->nextpid); + dev_dbg(sl811_to_hcd(sl811)->self.controller, + "bad ep%p pid %02x\n", ep, ep->nextpid); ep = NULL; } return ep; @@ -447,7 +447,8 @@ static void finish_request( } /* periodic deschedule */ - DBG("deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); + dev_dbg(sl811_to_hcd(sl811)->self.controller, + "deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { struct sl811h_ep *temp; struct sl811h_ep **prev = &sl811->periodic[i]; @@ -593,7 +594,8 @@ static inline u8 checkdone(struct sl811 *sl811) ctl = sl811_read(sl811, SL811_EP_A(SL11H_HOSTCTLREG)); if (ctl & SL11H_HCTLMASK_ARM) sl811_write(sl811, SL811_EP_A(SL11H_HOSTCTLREG), 0); - DBG("%s DONE_A: ctrl %02x sts %02x\n", + dev_dbg(sl811_to_hcd(sl811)->self.controller, + "%s DONE_A: ctrl %02x sts %02x\n", (ctl & SL11H_HCTLMASK_ARM) ? "timeout" : "lost", ctl, sl811_read(sl811, SL811_EP_A(SL11H_PKTSTATREG))); @@ -604,7 +606,8 @@ static inline u8 checkdone(struct sl811 *sl811) ctl = sl811_read(sl811, SL811_EP_B(SL11H_HOSTCTLREG)); if (ctl & SL11H_HCTLMASK_ARM) sl811_write(sl811, SL811_EP_B(SL11H_HOSTCTLREG), 0); - DBG("%s DONE_B: ctrl %02x sts %02x\n", + dev_dbg(sl811_to_hcd(sl811)->self.controller, + "%s DONE_B: ctrl %02x sts %02x\n", (ctl & SL11H_HCTLMASK_ARM) ? "timeout" : "lost", ctl, sl811_read(sl811, SL811_EP_B(SL11H_PKTSTATREG))); @@ -665,7 +668,7 @@ retry: * this one has nothing scheduled. */ if (sl811->next_periodic) { - // ERR("overrun to slot %d\n", index); + // dev_err(hcd->self.controller, "overrun to slot %d\n", index); sl811->stat_overrun++; } if (sl811->periodic[index]) @@ -723,7 +726,7 @@ retry: } else if (irqstat & SL11H_INTMASK_RD) { if (sl811->port1 & USB_PORT_STAT_SUSPEND) { - DBG("wakeup\n"); + dev_dbg(hcd->self.controller, "wakeup\n"); sl811->port1 |= USB_PORT_STAT_C_SUSPEND << 16; sl811->stat_wake++; } else @@ -852,8 +855,9 @@ static int sl811h_urb_enqueue( if (ep->maxpacket > H_MAXPACKET) { /* iso packets up to 240 bytes could work... */ - DBG("dev %d ep%d maxpacket %d\n", - udev->devnum, epnum, ep->maxpacket); + dev_dbg(hcd->self.controller, + "dev %d ep%d maxpacket %d\n", udev->devnum, + epnum, ep->maxpacket); retval = -EINVAL; kfree(ep); goto fail; @@ -917,7 +921,8 @@ static int sl811h_urb_enqueue( * to share the faster parts of the tree without needing * dummy/placeholder nodes */ - DBG("schedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); + dev_dbg(hcd->self.controller, "schedule qh%d/%p branch %d\n", + ep->period, ep, ep->branch); for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { struct sl811h_ep **prev = &sl811->periodic[i]; struct sl811h_ep *here = *prev; @@ -976,7 +981,8 @@ static int sl811h_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) } else if (sl811->active_a == ep) { if (time_before_eq(sl811->jiffies_a, jiffies)) { /* happens a lot with lowspeed?? */ - DBG("giveup on DONE_A: ctrl %02x sts %02x\n", + dev_dbg(hcd->self.controller, + "giveup on DONE_A: ctrl %02x sts %02x\n", sl811_read(sl811, SL811_EP_A(SL11H_HOSTCTLREG)), sl811_read(sl811, @@ -990,7 +996,8 @@ static int sl811h_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) } else if (sl811->active_b == ep) { if (time_before_eq(sl811->jiffies_a, jiffies)) { /* happens a lot with lowspeed?? */ - DBG("giveup on DONE_B: ctrl %02x sts %02x\n", + dev_dbg(hcd->self.controller, + "giveup on DONE_B: ctrl %02x sts %02x\n", sl811_read(sl811, SL811_EP_B(SL11H_HOSTCTLREG)), sl811_read(sl811, @@ -1008,7 +1015,8 @@ static int sl811h_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) if (urb) finish_request(sl811, ep, urb, 0); else - VDBG("dequeue, urb %p active %s; wait4irq\n", urb, + dev_dbg(sl811_to_hcd(sl811)->self.controller, + "dequeue, urb %p active %s; wait4irq\n", urb, (sl811->active_a == ep) ? "A" : "B"); } else retval = -EINVAL; @@ -1029,7 +1037,7 @@ sl811h_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) if (!list_empty(&hep->urb_list)) msleep(3); if (!list_empty(&hep->urb_list)) - WARNING("ep %p not empty?\n", ep); + dev_warn(hcd->self.controller, "ep %p not empty?\n", ep); kfree(ep); hep->hcpriv = NULL; @@ -1132,7 +1140,7 @@ sl811h_timer(unsigned long _sl811) switch (signaling) { case SL11H_CTL1MASK_SE0: - DBG("end reset\n"); + dev_dbg(sl811_to_hcd(sl811)->self.controller, "end reset\n"); sl811->port1 = (USB_PORT_STAT_C_RESET << 16) | USB_PORT_STAT_POWER; sl811->ctrl1 = 0; @@ -1141,11 +1149,12 @@ sl811h_timer(unsigned long _sl811) irqstat &= ~SL11H_INTMASK_RD; break; case SL11H_CTL1MASK_K: - DBG("end resume\n"); + dev_dbg(sl811_to_hcd(sl811)->self.controller, "end resume\n"); sl811->port1 &= ~USB_PORT_STAT_SUSPEND; break; default: - DBG("odd timer signaling: %02x\n", signaling); + dev_dbg(sl811_to_hcd(sl811)->self.controller, + "odd timer signaling: %02x\n", signaling); break; } sl811_write(sl811, SL11H_IRQ_STATUS, irqstat); @@ -1243,7 +1252,7 @@ sl811h_hub_control( break; /* 20 msec of resume/K signaling, other irqs blocked */ - DBG("start resume...\n"); + dev_dbg(hcd->self.controller, "start resume...\n"); sl811->irq_enable = 0; sl811_write(sl811, SL11H_IRQ_ENABLE, sl811->irq_enable); @@ -1281,7 +1290,8 @@ sl811h_hub_control( #ifndef VERBOSE if (*(u16*)(buf+2)) /* only if wPortChange is interesting */ #endif - DBG("GetPortStatus %08x\n", sl811->port1); + dev_dbg(hcd->self.controller, "GetPortStatus %08x\n", + sl811->port1); break; case SetPortFeature: if (wIndex != 1 || wLength != 0) @@ -1293,7 +1303,7 @@ sl811h_hub_control( if (!(sl811->port1 & USB_PORT_STAT_ENABLE)) goto error; - DBG("suspend...\n"); + dev_dbg(hcd->self.controller,"suspend...\n"); sl811->ctrl1 &= ~SL11H_CTL1MASK_SOF_ENA; sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); break; @@ -1338,7 +1348,7 @@ static int sl811h_bus_suspend(struct usb_hcd *hcd) { // SOFs off - DBG("%s\n", __func__); + dev_dbg(hcd->self.controller, "%s\n", __func__); return 0; } @@ -1346,7 +1356,7 @@ static int sl811h_bus_resume(struct usb_hcd *hcd) { // SOFs on - DBG("%s\n", __func__); + dev_dbg(hcd->self.controller, "%s\n", __func__); return 0; } @@ -1360,16 +1370,6 @@ sl811h_bus_resume(struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ -#ifdef STUB_DEBUG_FILE - -static inline void create_debug_file(struct sl811 *sl811) { } -static inline void remove_debug_file(struct sl811 *sl811) { } - -#else - -#include <linux/proc_fs.h> -#include <linux/seq_file.h> - static void dump_irq(struct seq_file *s, char *label, u8 mask) { seq_printf(s, "%s %02x%s%s%s%s%s%s\n", label, mask, @@ -1381,7 +1381,7 @@ static void dump_irq(struct seq_file *s, char *label, u8 mask) (mask & SL11H_INTMASK_DP) ? " dp" : ""); } -static int proc_sl811h_show(struct seq_file *s, void *unused) +static int sl811h_show(struct seq_file *s, void *unused) { struct sl811 *sl811 = s->private; struct sl811h_ep *ep; @@ -1492,34 +1492,31 @@ static int proc_sl811h_show(struct seq_file *s, void *unused) return 0; } -static int proc_sl811h_open(struct inode *inode, struct file *file) +static int sl811h_open(struct inode *inode, struct file *file) { - return single_open(file, proc_sl811h_show, PDE_DATA(inode)); + return single_open(file, sl811h_show, inode->i_private); } -static const struct file_operations proc_ops = { - .open = proc_sl811h_open, +static const struct file_operations debug_ops = { + .open = sl811h_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; /* expect just one sl811 per system */ -static const char proc_filename[] = "driver/sl811h"; - static void create_debug_file(struct sl811 *sl811) { - sl811->pde = proc_create_data(proc_filename, 0, NULL, &proc_ops, sl811); + sl811->debug_file = debugfs_create_file("sl811h", S_IRUGO, + usb_debug_root, sl811, + &debug_ops); } static void remove_debug_file(struct sl811 *sl811) { - if (sl811->pde) - remove_proc_entry(proc_filename, NULL); + debugfs_remove(sl811->debug_file); } -#endif - /*-------------------------------------------------------------------------*/ static void @@ -1648,7 +1645,7 @@ sl811h_probe(struct platform_device *dev) /* refuse to confuse usbcore */ if (dev->dev.dma_mask) { - DBG("no we won't dma\n"); + dev_dbg(&dev->dev, "no we won't dma\n"); return -EINVAL; } @@ -1694,7 +1691,7 @@ sl811h_probe(struct platform_device *dev) spin_lock_init(&sl811->lock); INIT_LIST_HEAD(&sl811->async); - sl811->board = dev->dev.platform_data; + sl811->board = dev_get_platdata(&dev->dev); init_timer(&sl811->timer); sl811->timer.function = sl811h_timer; sl811->timer.data = (unsigned long) sl811; @@ -1716,7 +1713,7 @@ sl811h_probe(struct platform_device *dev) break; default: /* reject case 0, SL11S is less functional */ - DBG("chiprev %02x\n", tmp); + dev_dbg(&dev->dev, "chiprev %02x\n", tmp); retval = -ENXIO; goto err6; } @@ -1747,7 +1744,7 @@ sl811h_probe(struct platform_device *dev) if (!ioaddr) iounmap(addr_reg); err2: - DBG("init error, %d\n", retval); + dev_dbg(&dev->dev, "init error, %d\n", retval); return retval; } diff --git a/drivers/usb/host/sl811.h b/drivers/usb/host/sl811.h index b6b8c1f233dd..1e23ef49bec1 100644 --- a/drivers/usb/host/sl811.h +++ b/drivers/usb/host/sl811.h @@ -122,7 +122,7 @@ struct sl811 { void __iomem *addr_reg; void __iomem *data_reg; struct sl811_platform_data *board; - struct proc_dir_entry *pde; + struct dentry *debug_file; unsigned long stat_insrmv; unsigned long stat_wake; @@ -242,25 +242,8 @@ sl811_read_buf(struct sl811 *sl811, int addr, void *buf, size_t count) /*-------------------------------------------------------------------------*/ -#ifdef DEBUG -#define DBG(stuff...) printk(KERN_DEBUG "sl811: " stuff) -#else -#define DBG(stuff...) do{}while(0) -#endif - -#ifdef VERBOSE -# define VDBG DBG -#else -# define VDBG(stuff...) do{}while(0) -#endif - #ifdef PACKET_TRACE -# define PACKET VDBG +# define PACKET pr_debug("sl811: "stuff) #else # define PACKET(stuff...) do{}while(0) #endif - -#define ERR(stuff...) printk(KERN_ERR "sl811: " stuff) -#define WARNING(stuff...) printk(KERN_WARNING "sl811: " stuff) -#define INFO(stuff...) printk(KERN_INFO "sl811: " stuff) - diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index 5c124bf5d018..e402beb5a069 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -1809,9 +1809,9 @@ static int u132_hcd_start(struct usb_hcd *hcd) struct platform_device *pdev = to_platform_device(hcd->self.controller); u16 vendor = ((struct u132_platform_data *) - (pdev->dev.platform_data))->vendor; + dev_get_platdata(&pdev->dev))->vendor; u16 device = ((struct u132_platform_data *) - (pdev->dev.platform_data))->device; + dev_get_platdata(&pdev->dev))->device; mutex_lock(&u132->sw_lock); msleep(10); if (vendor == PCI_VENDOR_ID_AMD && device == 0x740c) { @@ -3034,7 +3034,7 @@ static void u132_initialise(struct u132 *u132, struct platform_device *pdev) int addrs = MAX_U132_ADDRS; int udevs = MAX_U132_UDEVS; int endps = MAX_U132_ENDPS; - u132->board = pdev->dev.platform_data; + u132->board = dev_get_platdata(&pdev->dev); u132->platform_dev = pdev; u132->power = 0; u132->reset = 0; diff --git a/drivers/usb/host/uhci-grlib.c b/drivers/usb/host/uhci-grlib.c index 511bfc46dd78..53c23ff7d685 100644 --- a/drivers/usb/host/uhci-grlib.c +++ b/drivers/usb/host/uhci-grlib.c @@ -157,9 +157,7 @@ err_rmr: static int uhci_hcd_grlib_remove(struct platform_device *op) { - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); - - dev_set_drvdata(&op->dev, NULL); + struct usb_hcd *hcd = platform_get_drvdata(op); dev_dbg(&op->dev, "stopping GRLIB GRUSBHC UHCI USB Controller\n"); @@ -183,7 +181,7 @@ static int uhci_hcd_grlib_remove(struct platform_device *op) */ static void uhci_hcd_grlib_shutdown(struct platform_device *op) { - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); + struct usb_hcd *hcd = platform_get_drvdata(op); uhci_hc_died(hcd_to_uhci(hcd)); } diff --git a/drivers/usb/host/uhci-platform.c b/drivers/usb/host/uhci-platform.c index f1db61ada6a8..d033a0ec7f0d 100644 --- a/drivers/usb/host/uhci-platform.c +++ b/drivers/usb/host/uhci-platform.c @@ -130,7 +130,6 @@ static int uhci_hcd_platform_remove(struct platform_device *pdev) iounmap(hcd->regs); release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); - platform_set_drvdata(pdev, NULL); return 0; } @@ -144,7 +143,7 @@ static int uhci_hcd_platform_remove(struct platform_device *pdev) */ static void uhci_hcd_platform_shutdown(struct platform_device *op) { - struct usb_hcd *hcd = dev_get_drvdata(&op->dev); + struct usb_hcd *hcd = platform_get_drvdata(op); uhci_hc_died(hcd_to_uhci(hcd)); } @@ -161,6 +160,6 @@ static struct platform_driver uhci_platform_driver = { .driver = { .name = "platform-uhci", .owner = THIS_MODULE, - .of_match_table = of_match_ptr(platform_uhci_ids), + .of_match_table = platform_uhci_ids, }, }; diff --git a/drivers/usb/host/whci/hcd.c b/drivers/usb/host/whci/hcd.c index c3a647816af0..ecc88db804e0 100644 --- a/drivers/usb/host/whci/hcd.c +++ b/drivers/usb/host/whci/hcd.c @@ -231,8 +231,6 @@ static struct hc_driver whc_hc_driver = { .hub_status_data = wusbhc_rh_status_data, .hub_control = wusbhc_rh_control, - .bus_suspend = wusbhc_rh_suspend, - .bus_resume = wusbhc_rh_resume, .start_port_reset = wusbhc_rh_start_port_reset, }; diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c index 5f3a7c74aa8d..73503a81ee81 100644 --- a/drivers/usb/host/xhci-dbg.c +++ b/drivers/usb/host/xhci-dbg.c @@ -503,11 +503,14 @@ static void xhci_dbg_ep_ctx(struct xhci_hcd *xhci, if (last_ep < 31) last_ep_ctx = last_ep + 1; for (i = 0; i < last_ep_ctx; ++i) { + unsigned int epaddr = xhci_get_endpoint_address(i); struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, ctx, i); dma_addr_t dma = ctx->dma + ((unsigned long)ep_ctx - (unsigned long)ctx->bytes); - xhci_dbg(xhci, "Endpoint %02d Context:\n", i); + xhci_dbg(xhci, "%s Endpoint %02d Context (ep_index %02d):\n", + usb_endpoint_out(epaddr) ? "OUT" : "IN", + epaddr & USB_ENDPOINT_NUMBER_MASK, i); xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - ep_info\n", &ep_ctx->ep_info, (unsigned long long)dma, ep_ctx->ep_info); @@ -550,6 +553,11 @@ void xhci_dbg_ctx(struct xhci_hcd *xhci, if (ctx->type == XHCI_CTX_TYPE_INPUT) { struct xhci_input_control_ctx *ctrl_ctx = xhci_get_input_control_ctx(xhci, ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "Could not get input context, bad type.\n"); + return; + } + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - drop flags\n", &ctrl_ctx->drop_flags, (unsigned long long)dma, ctrl_ctx->drop_flags); @@ -572,3 +580,17 @@ void xhci_dbg_ctx(struct xhci_hcd *xhci, xhci_dbg_slot_ctx(xhci, ctx); xhci_dbg_ep_ctx(xhci, ctx, last_ep); } + +void xhci_dbg_trace(struct xhci_hcd *xhci, void (*trace)(struct va_format *), + const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + va_start(args, fmt); + vaf.fmt = fmt; + vaf.va = &args; + xhci_dbg(xhci, "%pV\n", &vaf); + trace(&vaf); + va_end(args); +} diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h index 377f4242dabb..9fe3225e6c61 100644 --- a/drivers/usb/host/xhci-ext-caps.h +++ b/drivers/usb/host/xhci-ext-caps.h @@ -71,6 +71,7 @@ /* USB 2.0 xHCI 1.0 hardware LMP capability - section 7.2.2.1.3.2 */ #define XHCI_HLC (1 << 19) +#define XHCI_BLC (1 << 20) /* command register values to disable interrupts and halt the HC */ /* start/stop HC execution - do not write unless HC is halted*/ diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 187a3ec1069a..fae697ed0b70 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -24,6 +24,7 @@ #include <asm/unaligned.h> #include "xhci.h" +#include "xhci-trace.h" #define PORT_WAKE_BITS (PORT_WKOC_E | PORT_WKDISC_E | PORT_WKCONN_E) #define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \ @@ -461,8 +462,15 @@ void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array, } } +/* Updates Link Status for USB 2.1 port */ +static void xhci_hub_report_usb2_link_state(u32 *status, u32 status_reg) +{ + if ((status_reg & PORT_PLS_MASK) == XDEV_U2) + *status |= USB_PORT_STAT_L1; +} + /* Updates Link Status for super Speed port */ -static void xhci_hub_report_link_state(u32 *status, u32 status_reg) +static void xhci_hub_report_usb3_link_state(u32 *status, u32 status_reg) { u32 pls = status_reg & PORT_PLS_MASK; @@ -528,12 +536,128 @@ void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status, u16 wIndex) xhci->port_status_u0 |= 1 << wIndex; if (xhci->port_status_u0 == all_ports_seen_u0) { del_timer_sync(&xhci->comp_mode_recovery_timer); - xhci_dbg(xhci, "All USB3 ports have entered U0 already!\n"); - xhci_dbg(xhci, "Compliance Mode Recovery Timer Deleted.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "All USB3 ports have entered U0 already!"); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Compliance Mode Recovery Timer Deleted."); } } } +/* + * Converts a raw xHCI port status into the format that external USB 2.0 or USB + * 3.0 hubs use. + * + * Possible side effects: + * - Mark a port as being done with device resume, + * and ring the endpoint doorbells. + * - Stop the Synopsys redriver Compliance Mode polling. + */ +static u32 xhci_get_port_status(struct usb_hcd *hcd, + struct xhci_bus_state *bus_state, + __le32 __iomem **port_array, + u16 wIndex, u32 raw_port_status) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + u32 status = 0; + int slot_id; + + /* wPortChange bits */ + if (raw_port_status & PORT_CSC) + status |= USB_PORT_STAT_C_CONNECTION << 16; + if (raw_port_status & PORT_PEC) + status |= USB_PORT_STAT_C_ENABLE << 16; + if ((raw_port_status & PORT_OCC)) + status |= USB_PORT_STAT_C_OVERCURRENT << 16; + if ((raw_port_status & PORT_RC)) + status |= USB_PORT_STAT_C_RESET << 16; + /* USB3.0 only */ + if (hcd->speed == HCD_USB3) { + if ((raw_port_status & PORT_PLC)) + status |= USB_PORT_STAT_C_LINK_STATE << 16; + if ((raw_port_status & PORT_WRC)) + status |= USB_PORT_STAT_C_BH_RESET << 16; + } + + if (hcd->speed != HCD_USB3) { + if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3 + && (raw_port_status & PORT_POWER)) + status |= USB_PORT_STAT_SUSPEND; + } + if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME && + !DEV_SUPERSPEED(raw_port_status)) { + if ((raw_port_status & PORT_RESET) || + !(raw_port_status & PORT_PE)) + return 0xffffffff; + if (time_after_eq(jiffies, + bus_state->resume_done[wIndex])) { + xhci_dbg(xhci, "Resume USB2 port %d\n", + wIndex + 1); + bus_state->resume_done[wIndex] = 0; + clear_bit(wIndex, &bus_state->resuming_ports); + xhci_set_link_state(xhci, port_array, wIndex, + XDEV_U0); + xhci_dbg(xhci, "set port %d resume\n", + wIndex + 1); + slot_id = xhci_find_slot_id_by_port(hcd, xhci, + wIndex + 1); + if (!slot_id) { + xhci_dbg(xhci, "slot_id is zero\n"); + return 0xffffffff; + } + xhci_ring_device(xhci, slot_id); + bus_state->port_c_suspend |= 1 << wIndex; + bus_state->suspended_ports &= ~(1 << wIndex); + } else { + /* + * The resume has been signaling for less than + * 20ms. Report the port status as SUSPEND, + * let the usbcore check port status again + * and clear resume signaling later. + */ + status |= USB_PORT_STAT_SUSPEND; + } + } + if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0 + && (raw_port_status & PORT_POWER) + && (bus_state->suspended_ports & (1 << wIndex))) { + bus_state->suspended_ports &= ~(1 << wIndex); + if (hcd->speed != HCD_USB3) + bus_state->port_c_suspend |= 1 << wIndex; + } + if (raw_port_status & PORT_CONNECT) { + status |= USB_PORT_STAT_CONNECTION; + status |= xhci_port_speed(raw_port_status); + } + if (raw_port_status & PORT_PE) + status |= USB_PORT_STAT_ENABLE; + if (raw_port_status & PORT_OC) + status |= USB_PORT_STAT_OVERCURRENT; + if (raw_port_status & PORT_RESET) + status |= USB_PORT_STAT_RESET; + if (raw_port_status & PORT_POWER) { + if (hcd->speed == HCD_USB3) + status |= USB_SS_PORT_STAT_POWER; + else + status |= USB_PORT_STAT_POWER; + } + /* Update Port Link State */ + if (hcd->speed == HCD_USB3) { + xhci_hub_report_usb3_link_state(&status, raw_port_status); + /* + * Verify if all USB3 Ports Have entered U0 already. + * Delete Compliance Mode Timer if so. + */ + xhci_del_comp_mod_timer(xhci, raw_port_status, wIndex); + } else { + xhci_hub_report_usb2_link_state(&status, raw_port_status); + } + if (bus_state->port_c_suspend & (1 << wIndex)) + status |= 1 << USB_PORT_FEAT_C_SUSPEND; + + return status; +} + int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { @@ -598,104 +722,20 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, if (!wIndex || wIndex > max_ports) goto error; wIndex--; - status = 0; temp = xhci_readl(xhci, port_array[wIndex]); if (temp == 0xffffffff) { retval = -ENODEV; break; } - xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n", wIndex, temp); - - /* wPortChange bits */ - if (temp & PORT_CSC) - status |= USB_PORT_STAT_C_CONNECTION << 16; - if (temp & PORT_PEC) - status |= USB_PORT_STAT_C_ENABLE << 16; - if ((temp & PORT_OCC)) - status |= USB_PORT_STAT_C_OVERCURRENT << 16; - if ((temp & PORT_RC)) - status |= USB_PORT_STAT_C_RESET << 16; - /* USB3.0 only */ - if (hcd->speed == HCD_USB3) { - if ((temp & PORT_PLC)) - status |= USB_PORT_STAT_C_LINK_STATE << 16; - if ((temp & PORT_WRC)) - status |= USB_PORT_STAT_C_BH_RESET << 16; - } + status = xhci_get_port_status(hcd, bus_state, port_array, + wIndex, temp); + if (status == 0xffffffff) + goto error; - if (hcd->speed != HCD_USB3) { - if ((temp & PORT_PLS_MASK) == XDEV_U3 - && (temp & PORT_POWER)) - status |= USB_PORT_STAT_SUSPEND; - } - if ((temp & PORT_PLS_MASK) == XDEV_RESUME && - !DEV_SUPERSPEED(temp)) { - if ((temp & PORT_RESET) || !(temp & PORT_PE)) - goto error; - if (time_after_eq(jiffies, - bus_state->resume_done[wIndex])) { - xhci_dbg(xhci, "Resume USB2 port %d\n", - wIndex + 1); - bus_state->resume_done[wIndex] = 0; - clear_bit(wIndex, &bus_state->resuming_ports); - xhci_set_link_state(xhci, port_array, wIndex, - XDEV_U0); - xhci_dbg(xhci, "set port %d resume\n", - wIndex + 1); - slot_id = xhci_find_slot_id_by_port(hcd, xhci, - wIndex + 1); - if (!slot_id) { - xhci_dbg(xhci, "slot_id is zero\n"); - goto error; - } - xhci_ring_device(xhci, slot_id); - bus_state->port_c_suspend |= 1 << wIndex; - bus_state->suspended_ports &= ~(1 << wIndex); - } else { - /* - * The resume has been signaling for less than - * 20ms. Report the port status as SUSPEND, - * let the usbcore check port status again - * and clear resume signaling later. - */ - status |= USB_PORT_STAT_SUSPEND; - } - } - if ((temp & PORT_PLS_MASK) == XDEV_U0 - && (temp & PORT_POWER) - && (bus_state->suspended_ports & (1 << wIndex))) { - bus_state->suspended_ports &= ~(1 << wIndex); - if (hcd->speed != HCD_USB3) - bus_state->port_c_suspend |= 1 << wIndex; - } - if (temp & PORT_CONNECT) { - status |= USB_PORT_STAT_CONNECTION; - status |= xhci_port_speed(temp); - } - if (temp & PORT_PE) - status |= USB_PORT_STAT_ENABLE; - if (temp & PORT_OC) - status |= USB_PORT_STAT_OVERCURRENT; - if (temp & PORT_RESET) - status |= USB_PORT_STAT_RESET; - if (temp & PORT_POWER) { - if (hcd->speed == HCD_USB3) - status |= USB_SS_PORT_STAT_POWER; - else - status |= USB_PORT_STAT_POWER; - } - /* Update Port Link State for super speed ports*/ - if (hcd->speed == HCD_USB3) { - xhci_hub_report_link_state(&status, temp); - /* - * Verify if all USB3 Ports Have entered U0 already. - * Delete Compliance Mode Timer if so. - */ - xhci_del_comp_mod_timer(xhci, temp, wIndex); - } - if (bus_state->port_c_suspend & (1 << wIndex)) - status |= 1 << USB_PORT_FEAT_C_SUSPEND; + xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n", + wIndex, temp); xhci_dbg(xhci, "Get port status returned 0x%x\n", status); + put_unaligned(cpu_to_le32(status), (__le32 *) buf); break; case SetPortFeature: @@ -867,18 +907,18 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, case USB_PORT_FEAT_U1_TIMEOUT: if (hcd->speed != HCD_USB3) goto error; - temp = xhci_readl(xhci, port_array[wIndex] + 1); + temp = xhci_readl(xhci, port_array[wIndex] + PORTPMSC); temp &= ~PORT_U1_TIMEOUT_MASK; temp |= PORT_U1_TIMEOUT(timeout); - xhci_writel(xhci, temp, port_array[wIndex] + 1); + xhci_writel(xhci, temp, port_array[wIndex] + PORTPMSC); break; case USB_PORT_FEAT_U2_TIMEOUT: if (hcd->speed != HCD_USB3) goto error; - temp = xhci_readl(xhci, port_array[wIndex] + 1); + temp = xhci_readl(xhci, port_array[wIndex] + PORTPMSC); temp &= ~PORT_U2_TIMEOUT_MASK; temp |= PORT_U2_TIMEOUT(timeout); - xhci_writel(xhci, temp, port_array[wIndex] + 1); + xhci_writel(xhci, temp, port_array[wIndex] + PORTPMSC); break; default: goto error; @@ -1098,10 +1138,8 @@ int xhci_bus_suspend(struct usb_hcd *hcd) __le32 __iomem *addr; u32 tmp; - /* Add one to the port status register address to get - * the port power control register address. - */ - addr = port_array[port_index] + 1; + /* Get the port power control register address. */ + addr = port_array[port_index] + PORTPMSC; tmp = xhci_readl(xhci, addr); tmp |= PORT_RWE; xhci_writel(xhci, tmp, addr); @@ -1193,7 +1231,7 @@ int xhci_bus_resume(struct usb_hcd *hcd) /* Add one to the port status register address to get * the port power control register address. */ - addr = port_array[port_index] + 1; + addr = port_array[port_index] + PORTPMSC; tmp = xhci_readl(xhci, addr); tmp &= ~PORT_RWE; xhci_writel(xhci, tmp, addr); diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 2cfc465925bd..53b972c2a09f 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -24,8 +24,10 @@ #include <linux/pci.h> #include <linux/slab.h> #include <linux/dmapool.h> +#include <linux/dma-mapping.h> #include "xhci.h" +#include "xhci-trace.h" /* * Allocates a generic ring segment from the ring pool, sets the dma address, @@ -347,7 +349,8 @@ int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring, return -ENOMEM; xhci_link_rings(xhci, ring, first, last, num_segs); - xhci_dbg(xhci, "ring expansion succeed, now has %d segments\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion, + "ring expansion succeed, now has %d segments", ring->num_segs); return 0; @@ -358,17 +361,25 @@ int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring, static struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, int type, gfp_t flags) { - struct xhci_container_ctx *ctx = kzalloc(sizeof(*ctx), flags); + struct xhci_container_ctx *ctx; + + if ((type != XHCI_CTX_TYPE_DEVICE) && (type != XHCI_CTX_TYPE_INPUT)) + return NULL; + + ctx = kzalloc(sizeof(*ctx), flags); if (!ctx) return NULL; - BUG_ON((type != XHCI_CTX_TYPE_DEVICE) && (type != XHCI_CTX_TYPE_INPUT)); ctx->type = type; ctx->size = HCC_64BYTE_CONTEXT(xhci->hcc_params) ? 2048 : 1024; if (type == XHCI_CTX_TYPE_INPUT) ctx->size += CTX_SIZE(xhci->hcc_params); ctx->bytes = dma_pool_alloc(xhci->device_pool, flags, &ctx->dma); + if (!ctx->bytes) { + kfree(ctx); + return NULL; + } memset(ctx->bytes, 0, ctx->size); return ctx; } @@ -385,7 +396,9 @@ static void xhci_free_container_ctx(struct xhci_hcd *xhci, struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx) { - BUG_ON(ctx->type != XHCI_CTX_TYPE_INPUT); + if (ctx->type != XHCI_CTX_TYPE_INPUT) + return NULL; + return (struct xhci_input_control_ctx *)ctx->bytes; } @@ -471,17 +484,6 @@ struct xhci_ring *xhci_dma_to_transfer_ring( return ep->ring; } -/* Only use this when you know stream_info is valid */ -#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING -static struct xhci_ring *dma_to_stream_ring( - struct xhci_stream_info *stream_info, - u64 address) -{ - return radix_tree_lookup(&stream_info->trb_address_map, - address >> TRB_SEGMENT_SHIFT); -} -#endif /* CONFIG_USB_XHCI_HCD_DEBUGGING */ - struct xhci_ring *xhci_stream_id_to_ring( struct xhci_virt_device *dev, unsigned int ep_index, @@ -499,58 +501,6 @@ struct xhci_ring *xhci_stream_id_to_ring( return ep->stream_info->stream_rings[stream_id]; } -#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING -static int xhci_test_radix_tree(struct xhci_hcd *xhci, - unsigned int num_streams, - struct xhci_stream_info *stream_info) -{ - u32 cur_stream; - struct xhci_ring *cur_ring; - u64 addr; - - for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { - struct xhci_ring *mapped_ring; - int trb_size = sizeof(union xhci_trb); - - cur_ring = stream_info->stream_rings[cur_stream]; - for (addr = cur_ring->first_seg->dma; - addr < cur_ring->first_seg->dma + TRB_SEGMENT_SIZE; - addr += trb_size) { - mapped_ring = dma_to_stream_ring(stream_info, addr); - if (cur_ring != mapped_ring) { - xhci_warn(xhci, "WARN: DMA address 0x%08llx " - "didn't map to stream ID %u; " - "mapped to ring %p\n", - (unsigned long long) addr, - cur_stream, - mapped_ring); - return -EINVAL; - } - } - /* One TRB after the end of the ring segment shouldn't return a - * pointer to the current ring (although it may be a part of a - * different ring). - */ - mapped_ring = dma_to_stream_ring(stream_info, addr); - if (mapped_ring != cur_ring) { - /* One TRB before should also fail */ - addr = cur_ring->first_seg->dma - trb_size; - mapped_ring = dma_to_stream_ring(stream_info, addr); - } - if (mapped_ring == cur_ring) { - xhci_warn(xhci, "WARN: Bad DMA address 0x%08llx " - "mapped to valid stream ID %u; " - "mapped ring = %p\n", - (unsigned long long) addr, - cur_stream, - mapped_ring); - return -EINVAL; - } - } - return 0; -} -#endif /* CONFIG_USB_XHCI_HCD_DEBUGGING */ - /* * Change an endpoint's internal structure so it supports stream IDs. The * number of requested streams includes stream 0, which cannot be used by device @@ -677,13 +627,6 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, * was any other way, the host controller would assume the ring is * "empty" and wait forever for data to be queued to that stream ID). */ -#if XHCI_DEBUG - /* Do a little test on the radix tree to make sure it returns the - * correct values. - */ - if (xhci_test_radix_tree(xhci, num_streams, stream_info)) - goto cleanup_rings; -#endif return stream_info; @@ -721,7 +664,8 @@ void xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci, * fls(0) = 0, fls(0x1) = 1, fls(0x10) = 2, fls(0x100) = 3, etc. */ max_primary_streams = fls(stream_info->num_stream_ctxs) - 2; - xhci_dbg(xhci, "Setting number of stream ctx array entries to %u\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Setting number of stream ctx array entries to %u", 1 << (max_primary_streams + 1)); ep_ctx->ep_info &= cpu_to_le32(~EP_MAXPSTREAMS_MASK); ep_ctx->ep_info |= cpu_to_le32(EP_MAXPSTREAMS(max_primary_streams) @@ -1049,6 +993,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud struct xhci_ep_ctx *ep0_ctx; struct xhci_slot_ctx *slot_ctx; u32 port_num; + u32 max_packets; struct usb_device *top_dev; dev = xhci->devs[udev->slot_id]; @@ -1066,15 +1011,20 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud switch (udev->speed) { case USB_SPEED_SUPER: slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_SS); + max_packets = MAX_PACKET(512); break; case USB_SPEED_HIGH: slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_HS); + max_packets = MAX_PACKET(64); break; + /* USB core guesses at a 64-byte max packet first for FS devices */ case USB_SPEED_FULL: slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_FS); + max_packets = MAX_PACKET(64); break; case USB_SPEED_LOW: slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_LS); + max_packets = MAX_PACKET(8); break; case USB_SPEED_WIRELESS: xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); @@ -1082,7 +1032,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud break; default: /* Speed was set earlier, this shouldn't happen. */ - BUG(); + return -EINVAL; } /* Find the root hub port this device is under */ port_num = xhci_find_real_port_number(xhci, udev); @@ -1141,31 +1091,10 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud /* Step 4 - ring already allocated */ /* Step 5 */ ep0_ctx->ep_info2 = cpu_to_le32(EP_TYPE(CTRL_EP)); - /* - * XXX: Not sure about wireless USB devices. - */ - switch (udev->speed) { - case USB_SPEED_SUPER: - ep0_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(512)); - break; - case USB_SPEED_HIGH: - /* USB core guesses at a 64-byte max packet first for FS devices */ - case USB_SPEED_FULL: - ep0_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(64)); - break; - case USB_SPEED_LOW: - ep0_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(8)); - break; - case USB_SPEED_WIRELESS: - xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); - return -EINVAL; - break; - default: - /* New speed? */ - BUG(); - } + /* EP 0 can handle "burst" sizes of 1, so Max Burst Size field is 0 */ - ep0_ctx->ep_info2 |= cpu_to_le32(MAX_BURST(0) | ERROR_COUNT(3)); + ep0_ctx->ep_info2 |= cpu_to_le32(MAX_BURST(0) | ERROR_COUNT(3) | + max_packets); ep0_ctx->deq = cpu_to_le64(dev->eps[0].ring->first_seg->dma | dev->eps[0].ring->cycle_state); @@ -1338,7 +1267,7 @@ static u32 xhci_get_endpoint_type(struct usb_device *udev, else type = EP_TYPE(INT_OUT_EP); } else { - BUG(); + type = 0; } return type; } @@ -1384,10 +1313,16 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, unsigned int max_burst; enum xhci_ring_type type; u32 max_esit_payload; + u32 endpoint_type; ep_index = xhci_get_endpoint_index(&ep->desc); ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index); + endpoint_type = xhci_get_endpoint_type(udev, ep); + if (!endpoint_type) + return -EINVAL; + ep_ctx->ep_info2 = cpu_to_le32(endpoint_type); + type = usb_endpoint_type(&ep->desc); /* Set up the endpoint ring */ virt_dev->eps[ep_index].new_ring = @@ -1416,11 +1351,9 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, * CErr shall be set to 0 for Isoch endpoints. */ if (!usb_endpoint_xfer_isoc(&ep->desc)) - ep_ctx->ep_info2 = cpu_to_le32(ERROR_COUNT(3)); + ep_ctx->ep_info2 |= cpu_to_le32(ERROR_COUNT(3)); else - ep_ctx->ep_info2 = cpu_to_le32(ERROR_COUNT(0)); - - ep_ctx->ep_info2 |= cpu_to_le32(xhci_get_endpoint_type(udev, ep)); + ep_ctx->ep_info2 |= cpu_to_le32(ERROR_COUNT(0)); /* Set the max packet size and max burst */ max_packet = GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc)); @@ -1614,7 +1547,8 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags) struct device *dev = xhci_to_hcd(xhci)->self.controller; int num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2); - xhci_dbg(xhci, "Allocating %d scratchpad buffers\n", num_sp); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Allocating %d scratchpad buffers", num_sp); if (!num_sp) return 0; @@ -1771,11 +1705,11 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) dma_free_coherent(&pdev->dev, size, xhci->erst.entries, xhci->erst.erst_dma_addr); xhci->erst.entries = NULL; - xhci_dbg(xhci, "Freed ERST\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed ERST"); if (xhci->event_ring) xhci_ring_free(xhci, xhci->event_ring); xhci->event_ring = NULL; - xhci_dbg(xhci, "Freed event ring\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed event ring"); if (xhci->lpm_command) xhci_free_command(xhci, xhci->lpm_command); @@ -1783,7 +1717,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) if (xhci->cmd_ring) xhci_ring_free(xhci, xhci->cmd_ring); xhci->cmd_ring = NULL; - xhci_dbg(xhci, "Freed command ring\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed command ring"); list_for_each_entry_safe(cur_cd, next_cd, &xhci->cancel_cmd_list, cancel_cmd_list) { list_del(&cur_cd->cancel_cmd_list); @@ -1796,22 +1730,24 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) if (xhci->segment_pool) dma_pool_destroy(xhci->segment_pool); xhci->segment_pool = NULL; - xhci_dbg(xhci, "Freed segment pool\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed segment pool"); if (xhci->device_pool) dma_pool_destroy(xhci->device_pool); xhci->device_pool = NULL; - xhci_dbg(xhci, "Freed device context pool\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed device context pool"); if (xhci->small_streams_pool) dma_pool_destroy(xhci->small_streams_pool); xhci->small_streams_pool = NULL; - xhci_dbg(xhci, "Freed small stream array pool\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Freed small stream array pool"); if (xhci->medium_streams_pool) dma_pool_destroy(xhci->medium_streams_pool); xhci->medium_streams_pool = NULL; - xhci_dbg(xhci, "Freed medium stream array pool\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Freed medium stream array pool"); if (xhci->dcbaa) dma_free_coherent(&pdev->dev, sizeof(*xhci->dcbaa), @@ -1827,6 +1763,9 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) } spin_unlock_irqrestore(&xhci->lock, flags); + if (!xhci->rh_bw) + goto no_bw; + num_ports = HCS_MAX_PORTS(xhci->hcs_params1); for (i = 0; i < num_ports; i++) { struct xhci_interval_bw_table *bwt = &xhci->rh_bw[i].bw_table; @@ -1845,6 +1784,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) } } +no_bw: xhci->num_usb2_ports = 0; xhci->num_usb3_ports = 0; xhci->num_active_eps = 0; @@ -1852,6 +1792,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) kfree(xhci->usb3_ports); kfree(xhci->port_array); kfree(xhci->rh_bw); + kfree(xhci->ext_caps); xhci->page_size = 0; xhci->page_shift = 0; @@ -2032,14 +1973,15 @@ static void xhci_set_hc_event_deq(struct xhci_hcd *xhci) * there might be more events to service. */ temp &= ~ERST_EHB; - xhci_dbg(xhci, "// Write event ring dequeue pointer, " - "preserving EHB bit\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Write event ring dequeue pointer, " + "preserving EHB bit"); xhci_write_64(xhci, ((u64) deq & (u64) ~ERST_PTR_MASK) | temp, &xhci->ir_set->erst_dequeue); } static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports, - __le32 __iomem *addr, u8 major_revision) + __le32 __iomem *addr, u8 major_revision, int max_caps) { u32 temp, port_offset, port_count; int i; @@ -2056,26 +1998,34 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports, temp = xhci_readl(xhci, addr + 2); port_offset = XHCI_EXT_PORT_OFF(temp); port_count = XHCI_EXT_PORT_COUNT(temp); - xhci_dbg(xhci, "Ext Cap %p, port offset = %u, " - "count = %u, revision = 0x%x\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Ext Cap %p, port offset = %u, " + "count = %u, revision = 0x%x", addr, port_offset, port_count, major_revision); /* Port count includes the current port offset */ if (port_offset == 0 || (port_offset + port_count - 1) > num_ports) /* WTF? "Valid values are ‘1’ to MaxPorts" */ return; + /* cache usb2 port capabilities */ + if (major_revision < 0x03 && xhci->num_ext_caps < max_caps) + xhci->ext_caps[xhci->num_ext_caps++] = temp; + /* Check the host's USB2 LPM capability */ if ((xhci->hci_version == 0x96) && (major_revision != 0x03) && (temp & XHCI_L1C)) { - xhci_dbg(xhci, "xHCI 0.96: support USB2 software lpm\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "xHCI 0.96: support USB2 software lpm"); xhci->sw_lpm_support = 1; } if ((xhci->hci_version >= 0x100) && (major_revision != 0x03)) { - xhci_dbg(xhci, "xHCI 1.0: support USB2 software lpm\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "xHCI 1.0: support USB2 software lpm"); xhci->sw_lpm_support = 1; if (temp & XHCI_HLC) { - xhci_dbg(xhci, "xHCI 1.0: support USB2 hardware lpm\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "xHCI 1.0: support USB2 hardware lpm"); xhci->hw_lpm_support = 1; } } @@ -2121,10 +2071,11 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports, */ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) { - __le32 __iomem *addr; - u32 offset; + __le32 __iomem *addr, *tmp_addr; + u32 offset, tmp_offset; unsigned int num_ports; int i, j, port_index; + int cap_count = 0; addr = &xhci->cap_regs->hcc_params; offset = XHCI_HCC_EXT_CAPS(xhci_readl(xhci, addr)); @@ -2157,13 +2108,32 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) * See section 5.3.6 for offset calculation. */ addr = &xhci->cap_regs->hc_capbase + offset; + + tmp_addr = addr; + tmp_offset = offset; + + /* count extended protocol capability entries for later caching */ + do { + u32 cap_id; + cap_id = xhci_readl(xhci, tmp_addr); + if (XHCI_EXT_CAPS_ID(cap_id) == XHCI_EXT_CAPS_PROTOCOL) + cap_count++; + tmp_offset = XHCI_EXT_CAPS_NEXT(cap_id); + tmp_addr += tmp_offset; + } while (tmp_offset); + + xhci->ext_caps = kzalloc(sizeof(*xhci->ext_caps) * cap_count, flags); + if (!xhci->ext_caps) + return -ENOMEM; + while (1) { u32 cap_id; cap_id = xhci_readl(xhci, addr); if (XHCI_EXT_CAPS_ID(cap_id) == XHCI_EXT_CAPS_PROTOCOL) xhci_add_in_port(xhci, num_ports, addr, - (u8) XHCI_EXT_PORT_MAJOR(cap_id)); + (u8) XHCI_EXT_PORT_MAJOR(cap_id), + cap_count); offset = XHCI_EXT_CAPS_NEXT(cap_id); if (!offset || (xhci->num_usb2_ports + xhci->num_usb3_ports) == num_ports) @@ -2179,18 +2149,21 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) xhci_warn(xhci, "No ports on the roothubs?\n"); return -ENODEV; } - xhci_dbg(xhci, "Found %u USB 2.0 ports and %u USB 3.0 ports.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Found %u USB 2.0 ports and %u USB 3.0 ports.", xhci->num_usb2_ports, xhci->num_usb3_ports); /* Place limits on the number of roothub ports so that the hub * descriptors aren't longer than the USB core will allocate. */ if (xhci->num_usb3_ports > 15) { - xhci_dbg(xhci, "Limiting USB 3.0 roothub ports to 15.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Limiting USB 3.0 roothub ports to 15."); xhci->num_usb3_ports = 15; } if (xhci->num_usb2_ports > USB_MAXCHILDREN) { - xhci_dbg(xhci, "Limiting USB 2.0 roothub ports to %u.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Limiting USB 2.0 roothub ports to %u.", USB_MAXCHILDREN); xhci->num_usb2_ports = USB_MAXCHILDREN; } @@ -2215,8 +2188,9 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) xhci->usb2_ports[port_index] = &xhci->op_regs->port_status_base + NUM_PORT_REGS*i; - xhci_dbg(xhci, "USB 2.0 port at index %u, " - "addr = %p\n", i, + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "USB 2.0 port at index %u, " + "addr = %p", i, xhci->usb2_ports[port_index]); port_index++; if (port_index == xhci->num_usb2_ports) @@ -2235,8 +2209,9 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) xhci->usb3_ports[port_index] = &xhci->op_regs->port_status_base + NUM_PORT_REGS*i; - xhci_dbg(xhci, "USB 3.0 port at index %u, " - "addr = %p\n", i, + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "USB 3.0 port at index %u, " + "addr = %p", i, xhci->usb3_ports[port_index]); port_index++; if (port_index == xhci->num_usb3_ports) @@ -2256,33 +2231,39 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) u32 page_size, temp; int i; + INIT_LIST_HEAD(&xhci->lpm_failed_devs); + INIT_LIST_HEAD(&xhci->cancel_cmd_list); + page_size = xhci_readl(xhci, &xhci->op_regs->page_size); - xhci_dbg(xhci, "Supported page size register = 0x%x\n", page_size); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Supported page size register = 0x%x", page_size); for (i = 0; i < 16; i++) { if ((0x1 & page_size) != 0) break; page_size = page_size >> 1; } if (i < 16) - xhci_dbg(xhci, "Supported page size of %iK\n", (1 << (i+12)) / 1024); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Supported page size of %iK", (1 << (i+12)) / 1024); else xhci_warn(xhci, "WARN: no supported page size\n"); /* Use 4K pages, since that's common and the minimum the HC supports */ xhci->page_shift = 12; xhci->page_size = 1 << xhci->page_shift; - xhci_dbg(xhci, "HCD page size set to %iK\n", xhci->page_size / 1024); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "HCD page size set to %iK", xhci->page_size / 1024); /* * Program the Number of Device Slots Enabled field in the CONFIG * register with the max value of slots the HC can handle. */ val = HCS_MAX_SLOTS(xhci_readl(xhci, &xhci->cap_regs->hcs_params1)); - xhci_dbg(xhci, "// xHC can handle at most %d device slots.\n", - (unsigned int) val); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// xHC can handle at most %d device slots.", val); val2 = xhci_readl(xhci, &xhci->op_regs->config_reg); val |= (val2 & ~HCS_SLOTS_MASK); - xhci_dbg(xhci, "// Setting Max device slots reg = 0x%x.\n", - (unsigned int) val); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Setting Max device slots reg = 0x%x.", val); xhci_writel(xhci, val, &xhci->op_regs->config_reg); /* @@ -2295,7 +2276,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) goto fail; memset(xhci->dcbaa, 0, sizeof *(xhci->dcbaa)); xhci->dcbaa->dma = dma; - xhci_dbg(xhci, "// Device context base array address = 0x%llx (DMA), %p (virt)\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Device context base array address = 0x%llx (DMA), %p (virt)", (unsigned long long)xhci->dcbaa->dma, xhci->dcbaa); xhci_write_64(xhci, dma, &xhci->op_regs->dcbaa_ptr); @@ -2334,9 +2316,9 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) xhci->cmd_ring = xhci_ring_alloc(xhci, 1, 1, TYPE_COMMAND, flags); if (!xhci->cmd_ring) goto fail; - INIT_LIST_HEAD(&xhci->cancel_cmd_list); - xhci_dbg(xhci, "Allocated command ring at %p\n", xhci->cmd_ring); - xhci_dbg(xhci, "First segment DMA is 0x%llx\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Allocated command ring at %p", xhci->cmd_ring); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "First segment DMA is 0x%llx", (unsigned long long)xhci->cmd_ring->first_seg->dma); /* Set the address in the Command Ring Control register */ @@ -2344,7 +2326,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) val_64 = (val_64 & (u64) CMD_RING_RSVD_BITS) | (xhci->cmd_ring->first_seg->dma & (u64) ~CMD_RING_RSVD_BITS) | xhci->cmd_ring->cycle_state; - xhci_dbg(xhci, "// Setting command ring address to 0x%x\n", val); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Setting command ring address to 0x%x", val); xhci_write_64(xhci, val_64, &xhci->op_regs->cmd_ring); xhci_dbg_cmd_ptrs(xhci); @@ -2360,8 +2343,9 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) val = xhci_readl(xhci, &xhci->cap_regs->db_off); val &= DBOFF_MASK; - xhci_dbg(xhci, "// Doorbell array is located at offset 0x%x" - " from cap regs base addr\n", val); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Doorbell array is located at offset 0x%x" + " from cap regs base addr", val); xhci->dba = (void __iomem *) xhci->cap_regs + val; xhci_dbg_regs(xhci); xhci_print_run_regs(xhci); @@ -2372,7 +2356,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) * Event ring setup: Allocate a normal ring, but also setup * the event ring segment table (ERST). Section 4.9.3. */ - xhci_dbg(xhci, "// Allocating event ring\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "// Allocating event ring"); xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, 1, TYPE_EVENT, flags); if (!xhci->event_ring) @@ -2385,13 +2369,15 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) GFP_KERNEL); if (!xhci->erst.entries) goto fail; - xhci_dbg(xhci, "// Allocated event ring segment table at 0x%llx\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Allocated event ring segment table at 0x%llx", (unsigned long long)dma); memset(xhci->erst.entries, 0, sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS); xhci->erst.num_entries = ERST_NUM_SEGS; xhci->erst.erst_dma_addr = dma; - xhci_dbg(xhci, "Set ERST to 0; private num segs = %i, virt addr = %p, dma addr = 0x%llx\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Set ERST to 0; private num segs = %i, virt addr = %p, dma addr = 0x%llx", xhci->erst.num_entries, xhci->erst.entries, (unsigned long long)xhci->erst.erst_dma_addr); @@ -2409,13 +2395,16 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) val = xhci_readl(xhci, &xhci->ir_set->erst_size); val &= ERST_SIZE_MASK; val |= ERST_NUM_SEGS; - xhci_dbg(xhci, "// Write ERST size = %i to ir_set 0 (some bits preserved)\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Write ERST size = %i to ir_set 0 (some bits preserved)", val); xhci_writel(xhci, val, &xhci->ir_set->erst_size); - xhci_dbg(xhci, "// Set ERST entries to point to event ring.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Set ERST entries to point to event ring."); /* set the segment table base address */ - xhci_dbg(xhci, "// Set ERST base address for ir_set 0 = 0x%llx\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Set ERST base address for ir_set 0 = 0x%llx", (unsigned long long)xhci->erst.erst_dma_addr); val_64 = xhci_read_64(xhci, &xhci->ir_set->erst_base); val_64 &= ERST_PTR_MASK; @@ -2424,7 +2413,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) /* Set the event ring dequeue address */ xhci_set_hc_event_deq(xhci); - xhci_dbg(xhci, "Wrote ERST address to ir_set 0.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Wrote ERST address to ir_set 0."); xhci_print_ir_set(xhci, 0); /* @@ -2445,8 +2435,6 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) if (xhci_setup_port_arrays(xhci, flags)) goto fail; - INIT_LIST_HEAD(&xhci->lpm_failed_devs); - /* Enable USB 3.0 device notifications for function remote wake, which * is necessary for allowing USB 3.0 devices to do remote wakeup from * U3 (device suspend). diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 1a30c380043c..c2d495057eb5 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -25,6 +25,7 @@ #include <linux/module.h> #include "xhci.h" +#include "xhci-trace.h" /* Device for a quirk */ #define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73 @@ -64,16 +65,18 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK && pdev->revision == 0x0) { xhci->quirks |= XHCI_RESET_EP_QUIRK; - xhci_dbg(xhci, "QUIRK: Fresco Logic xHC needs configure" - " endpoint cmd after reset endpoint\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "QUIRK: Fresco Logic xHC needs configure" + " endpoint cmd after reset endpoint"); } /* Fresco Logic confirms: all revisions of this chip do not * support MSI, even though some of them claim to in their PCI * capabilities. */ xhci->quirks |= XHCI_BROKEN_MSI; - xhci_dbg(xhci, "QUIRK: Fresco Logic revision %u " - "has broken MSI implementation\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "QUIRK: Fresco Logic revision %u " + "has broken MSI implementation", pdev->revision); xhci->quirks |= XHCI_TRUST_TX_LENGTH; } @@ -93,7 +96,6 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) } if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) { - xhci->quirks |= XHCI_SPURIOUS_SUCCESS; xhci->quirks |= XHCI_EP_LIMIT_QUIRK; xhci->limit_active_eps = 64; xhci->quirks |= XHCI_SW_BW_CHECKING; @@ -111,7 +113,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) if (pdev->vendor == PCI_VENDOR_ID_ETRON && pdev->device == PCI_DEVICE_ID_ASROCK_P67) { xhci->quirks |= XHCI_RESET_ON_RESUME; - xhci_dbg(xhci, "QUIRK: Resetting on resume\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "QUIRK: Resetting on resume"); xhci->quirks |= XHCI_TRUST_TX_LENGTH; } if (pdev->vendor == PCI_VENDOR_ID_VIA) @@ -221,6 +224,14 @@ static void xhci_pci_remove(struct pci_dev *dev) static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + + /* + * Systems with the TI redriver that loses port status change events + * need to have the registers polled during D3, so avoid D3cold. + */ + if (xhci_compliance_mode_recovery_timer_quirk_check()) + pdev->no_d3cold = true; return xhci_suspend(xhci); } @@ -242,13 +253,15 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) * writers. * * Unconditionally switch the ports back to xHCI after a system resume. - * We can't tell whether the EHCI or xHCI controller will be resumed - * first, so we have to do the port switchover in both drivers. Writing - * a '1' to the port switchover registers should have no effect if the - * port was already switched over. + * It should not matter whether the EHCI or xHCI controller is + * resumed first. It's enough to do the switchover in xHCI because + * USB core won't notice anything as the hub driver doesn't start + * running again until after all the devices (including both EHCI and + * xHCI host controllers) have been resumed. */ - if (usb_is_intel_switchable_xhci(pdev)) - usb_enable_xhci_ports(pdev); + + if (pdev->vendor == PCI_VENDOR_ID_INTEL) + usb_enable_intel_xhci_ports(pdev); retval = xhci_resume(xhci, hibernated); return retval; diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index df90fe51b4aa..d9c169f470d3 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -14,6 +14,8 @@ #include <linux/platform_device.h> #include <linux/module.h> #include <linux/slab.h> +#include <linux/of.h> +#include <linux/dma-mapping.h> #include "xhci.h" @@ -24,7 +26,7 @@ static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci) * here that the generic code does not try to make a pci_dev from our * dev struct in order to setup MSI */ - xhci->quirks |= XHCI_BROKEN_MSI; + xhci->quirks |= XHCI_PLAT; } /* called during probe() after chip reset completes */ @@ -104,6 +106,15 @@ static int xhci_plat_probe(struct platform_device *pdev) if (!res) return -ENODEV; + /* Initialize dma_mask and coherent_dma_mask to 32-bits */ + ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (ret) + return ret; + if (!pdev->dev.dma_mask) + pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; + else + dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); + hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) return -ENOMEM; @@ -130,7 +141,7 @@ static int xhci_plat_probe(struct platform_device *pdev) goto unmap_registers; /* USB 2.0 roothub is stored in the platform_device now. */ - hcd = dev_get_drvdata(&pdev->dev); + hcd = platform_get_drvdata(pdev); xhci = hcd_to_xhci(hcd); xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev, dev_name(&pdev->dev), hcd); @@ -179,17 +190,53 @@ static int xhci_plat_remove(struct platform_device *dev) usb_remove_hcd(hcd); iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); kfree(xhci); return 0; } +#ifdef CONFIG_PM +static int xhci_plat_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + return xhci_suspend(xhci); +} + +static int xhci_plat_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + return xhci_resume(xhci, 0); +} + +static const struct dev_pm_ops xhci_plat_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume) +}; +#define DEV_PM_OPS (&xhci_plat_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif /* CONFIG_PM */ + +#ifdef CONFIG_OF +static const struct of_device_id usb_xhci_of_match[] = { + { .compatible = "xhci-platform" }, + { }, +}; +MODULE_DEVICE_TABLE(of, usb_xhci_of_match); +#endif + static struct platform_driver usb_xhci_driver = { .probe = xhci_plat_probe, .remove = xhci_plat_remove, .driver = { .name = "xhci-hcd", + .pm = DEV_PM_OPS, + .of_match_table = of_match_ptr(usb_xhci_of_match), }, }; MODULE_ALIAS("platform:xhci-hcd"); diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 1969c001b3f9..411da1fc7ae8 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -67,6 +67,7 @@ #include <linux/scatterlist.h> #include <linux/slab.h> #include "xhci.h" +#include "xhci-trace.h" static int handle_cmd_in_cmd_wait_list(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, @@ -434,7 +435,7 @@ static void ring_doorbell_for_active_rings(struct xhci_hcd *xhci, /* A ring has pending URBs if its TD list is not empty */ if (!(ep->ep_state & EP_HAS_STREAMS)) { - if (!(list_empty(&ep->ring->td_list))) + if (ep->ring && !(list_empty(&ep->ring->td_list))) xhci_ring_ep_doorbell(xhci, slot_id, ep_index, 0); return; } @@ -555,7 +556,8 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, return; } state->new_cycle_state = 0; - xhci_dbg(xhci, "Finding segment containing stopped TRB.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Finding segment containing stopped TRB."); state->new_deq_seg = find_trb_seg(cur_td->start_seg, dev->eps[ep_index].stopped_trb, &state->new_cycle_state); @@ -565,12 +567,14 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, } /* Dig out the cycle state saved by the xHC during the stop ep cmd */ - xhci_dbg(xhci, "Finding endpoint context\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Finding endpoint context"); ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index); state->new_cycle_state = 0x1 & le64_to_cpu(ep_ctx->deq); state->new_deq_ptr = cur_td->last_trb; - xhci_dbg(xhci, "Finding segment containing last TRB in TD.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Finding segment containing last TRB in TD."); state->new_deq_seg = find_trb_seg(state->new_deq_seg, state->new_deq_ptr, &state->new_cycle_state); @@ -597,13 +601,16 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, if (ep_ring->first_seg == ep_ring->first_seg->next && state->new_deq_ptr < dev->eps[ep_index].stopped_trb) state->new_cycle_state ^= 0x1; - xhci_dbg(xhci, "Cycle state = 0x%x\n", state->new_cycle_state); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Cycle state = 0x%x", state->new_cycle_state); /* Don't update the ring cycle state for the producer (us). */ - xhci_dbg(xhci, "New dequeue segment = %p (virtual)\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "New dequeue segment = %p (virtual)", state->new_deq_seg); addr = xhci_trb_virt_to_dma(state->new_deq_seg, state->new_deq_ptr); - xhci_dbg(xhci, "New dequeue pointer = 0x%llx (DMA)\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "New dequeue pointer = 0x%llx (DMA)", (unsigned long long) addr); } @@ -631,9 +638,11 @@ static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, if (flip_cycle) cur_trb->generic.field[3] ^= cpu_to_le32(TRB_CYCLE); - xhci_dbg(xhci, "Cancel (unchain) link TRB\n"); - xhci_dbg(xhci, "Address = %p (0x%llx dma); " - "in seg %p (0x%llx dma)\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Cancel (unchain) link TRB"); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Address = %p (0x%llx dma); " + "in seg %p (0x%llx dma)", cur_trb, (unsigned long long)xhci_trb_virt_to_dma(cur_seg, cur_trb), cur_seg, @@ -651,7 +660,8 @@ static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, cpu_to_le32(TRB_CYCLE); cur_trb->generic.field[3] |= cpu_to_le32( TRB_TYPE(TRB_TR_NOOP)); - xhci_dbg(xhci, "TRB to noop at offset 0x%llx\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "TRB to noop at offset 0x%llx", (unsigned long long) xhci_trb_virt_to_dma(cur_seg, cur_trb)); } @@ -672,8 +682,9 @@ void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, { struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; - xhci_dbg(xhci, "Set TR Deq Ptr cmd, new deq seg = %p (0x%llx dma), " - "new deq ptr = %p (0x%llx dma), new cycle = %u\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Set TR Deq Ptr cmd, new deq seg = %p (0x%llx dma), " + "new deq ptr = %p (0x%llx dma), new cycle = %u", deq_state->new_deq_seg, (unsigned long long)deq_state->new_deq_seg->dma, deq_state->new_deq_ptr, @@ -793,7 +804,8 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, */ list_for_each(entry, &ep->cancelled_td_list) { cur_td = list_entry(entry, struct xhci_td, cancelled_td_list); - xhci_dbg(xhci, "Removing canceled TD starting at 0x%llx (dma).\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Removing canceled TD starting at 0x%llx (dma).", (unsigned long long)xhci_trb_virt_to_dma( cur_td->start_seg, cur_td->first_trb)); ep_ring = xhci_urb_to_transfer_ring(xhci, cur_td->urb); @@ -913,14 +925,16 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) ep->stop_cmds_pending--; if (xhci->xhc_state & XHCI_STATE_DYING) { - xhci_dbg(xhci, "Stop EP timer ran, but another timer marked " - "xHCI as DYING, exiting.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Stop EP timer ran, but another timer marked " + "xHCI as DYING, exiting."); spin_unlock_irqrestore(&xhci->lock, flags); return; } if (!(ep->stop_cmds_pending == 0 && (ep->ep_state & EP_HALT_PENDING))) { - xhci_dbg(xhci, "Stop EP timer ran, but no command pending, " - "exiting.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Stop EP timer ran, but no command pending, " + "exiting."); spin_unlock_irqrestore(&xhci->lock, flags); return; } @@ -962,8 +976,9 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) ring = temp_ep->ring; if (!ring) continue; - xhci_dbg(xhci, "Killing URBs for slot ID %u, " - "ep index %u\n", i, j); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Killing URBs for slot ID %u, " + "ep index %u", i, j); while (!list_empty(&ring->td_list)) { cur_td = list_first_entry(&ring->td_list, struct xhci_td, @@ -986,9 +1001,11 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) } } spin_unlock_irqrestore(&xhci->lock, flags); - xhci_dbg(xhci, "Calling usb_hc_died()\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Calling usb_hc_died()"); usb_hc_died(xhci_to_hcd(xhci)->primary_hcd); - xhci_dbg(xhci, "xHCI host controller is dead.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "xHCI host controller is dead."); } @@ -1092,7 +1109,8 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci, ep_state &= EP_STATE_MASK; slot_state = le32_to_cpu(slot_ctx->dev_state); slot_state = GET_SLOT_STATE(slot_state); - xhci_dbg(xhci, "Slot state = %u, EP state = %u\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Slot state = %u, EP state = %u", slot_state, ep_state); break; case COMP_EBADSLT: @@ -1112,7 +1130,8 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci, * cancelling URBs, which might not be an error... */ } else { - xhci_dbg(xhci, "Successful Set TR Deq Ptr cmd, deq = @%08llx\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Successful Set TR Deq Ptr cmd, deq = @%08llx", le64_to_cpu(ep_ctx->deq)); if (xhci_trb_virt_to_dma(dev->eps[ep_index].queued_deq_seg, dev->eps[ep_index].queued_deq_ptr) == @@ -1150,7 +1169,8 @@ static void handle_reset_ep_completion(struct xhci_hcd *xhci, /* This command will only fail if the endpoint wasn't halted, * but we don't care. */ - xhci_dbg(xhci, "Ignoring reset ep completion code of %u\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, + "Ignoring reset ep completion code of %u", GET_COMP_CODE(le32_to_cpu(event->status))); /* HW with the reset endpoint quirk needs to have a configure endpoint @@ -1158,7 +1178,8 @@ static void handle_reset_ep_completion(struct xhci_hcd *xhci, * because the HW can't handle two commands being queued in a row. */ if (xhci->quirks & XHCI_RESET_EP_QUIRK) { - xhci_dbg(xhci, "Queueing configure endpoint command\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Queueing configure endpoint command"); xhci_queue_configure_endpoint(xhci, xhci->devs[slot_id]->in_ctx->dma, slot_id, false); @@ -1377,6 +1398,9 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, return; } + trace_xhci_cmd_completion(&xhci->cmd_ring->dequeue->generic, + (struct xhci_generic_trb *) event); + if ((GET_COMP_CODE(le32_to_cpu(event->status)) == COMP_CMD_ABORT) || (GET_COMP_CODE(le32_to_cpu(event->status)) == COMP_CMD_STOP)) { /* If the return value is 0, we think the trb pointed by @@ -1424,6 +1448,10 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, */ ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "Could not get input context, bad type.\n"); + break; + } /* Input ctx add_flags are the endpoint index plus one */ ep_index = xhci_last_valid_endpoint(le32_to_cpu(ctrl_ctx->add_flags)) - 1; /* A usb_set_interface() call directly after clearing a halted @@ -1440,8 +1468,9 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, ep_state = xhci->devs[slot_id]->eps[ep_index].ep_state; if (!(ep_state & EP_HALTED)) goto bandwidth_change; - xhci_dbg(xhci, "Completed config ep cmd - " - "last ep index = %d, state = %d\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Completed config ep cmd - " + "last ep index = %d, state = %d", ep_index, ep_state); /* Clear internal halted state and restart ring(s) */ xhci->devs[slot_id]->eps[ep_index].ep_state &= @@ -1450,7 +1479,8 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, break; } bandwidth_change: - xhci_dbg(xhci, "Completed config ep cmd\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Completed config ep cmd"); xhci->devs[slot_id]->cmd_status = GET_COMP_CODE(le32_to_cpu(event->status)); complete(&xhci->devs[slot_id]->cmd_completion); @@ -1493,7 +1523,8 @@ bandwidth_change: xhci->error_bitmask |= 1 << 6; break; } - xhci_dbg(xhci, "NEC firmware version %2x.%02x\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "NEC firmware version %2x.%02x", NEC_FW_MAJOR(le32_to_cpu(event->status)), NEC_FW_MINOR(le32_to_cpu(event->status))); break; @@ -2799,7 +2830,7 @@ hw_died: return IRQ_HANDLED; } -irqreturn_t xhci_msi_irq(int irq, struct usb_hcd *hcd) +irqreturn_t xhci_msi_irq(int irq, void *hcd) { return xhci_irq(hcd); } @@ -2873,8 +2904,8 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, return -ENOMEM; } - xhci_dbg(xhci, "ERROR no room on ep ring, " - "try ring expansion\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion, + "ERROR no room on ep ring, try ring expansion"); num_trbs_needed = num_trbs - ep_ring->num_trbs_free; if (xhci_ring_expansion(xhci, ep_ring, num_trbs_needed, mem_flags)) { @@ -3056,14 +3087,10 @@ int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, * to set the polling interval (once the API is added). */ if (xhci_interval != ep_interval) { - if (printk_ratelimit()) - dev_dbg(&urb->dev->dev, "Driver uses different interval" - " (%d microframe%s) than xHCI " - "(%d microframe%s)\n", - ep_interval, - ep_interval == 1 ? "" : "s", - xhci_interval, - xhci_interval == 1 ? "" : "s"); + dev_dbg_ratelimited(&urb->dev->dev, + "Driver uses different interval (%d microframe%s) than xHCI (%d microframe%s)\n", + ep_interval, ep_interval == 1 ? "" : "s", + xhci_interval, xhci_interval == 1 ? "" : "s"); urb->interval = xhci_interval; /* Convert back to frames for LS/FS devices */ if (urb->dev->speed == USB_SPEED_LOW || @@ -3845,14 +3872,10 @@ int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags, * to set the polling interval (once the API is added). */ if (xhci_interval != ep_interval) { - if (printk_ratelimit()) - dev_dbg(&urb->dev->dev, "Driver uses different interval" - " (%d microframe%s) than xHCI " - "(%d microframe%s)\n", - ep_interval, - ep_interval == 1 ? "" : "s", - xhci_interval, - xhci_interval == 1 ? "" : "s"); + dev_dbg_ratelimited(&urb->dev->dev, + "Driver uses different interval (%d microframe%s) than xHCI (%d microframe%s)\n", + ep_interval, ep_interval == 1 ? "" : "s", + xhci_interval, xhci_interval == 1 ? "" : "s"); urb->interval = xhci_interval; /* Convert back to frames for LS/FS devices */ if (urb->dev->speed == USB_SPEED_LOW || diff --git a/drivers/usb/host/xhci-trace.c b/drivers/usb/host/xhci-trace.c new file mode 100644 index 000000000000..7cf30c83dcf3 --- /dev/null +++ b/drivers/usb/host/xhci-trace.c @@ -0,0 +1,15 @@ +/* + * xHCI host controller driver + * + * Copyright (C) 2013 Xenia Ragiadakou + * + * Author: Xenia Ragiadakou + * Email : burzalodowa@gmail.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#define CREATE_TRACE_POINTS +#include "xhci-trace.h" diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h new file mode 100644 index 000000000000..20364cc8d2fb --- /dev/null +++ b/drivers/usb/host/xhci-trace.h @@ -0,0 +1,151 @@ +/* + * xHCI host controller driver + * + * Copyright (C) 2013 Xenia Ragiadakou + * + * Author: Xenia Ragiadakou + * Email : burzalodowa@gmail.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM xhci-hcd + +#if !defined(__XHCI_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define __XHCI_TRACE_H + +#include <linux/tracepoint.h> +#include "xhci.h" + +#define XHCI_MSG_MAX 500 + +DECLARE_EVENT_CLASS(xhci_log_msg, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf), + TP_STRUCT__entry(__dynamic_array(char, msg, XHCI_MSG_MAX)), + TP_fast_assign( + vsnprintf(__get_str(msg), XHCI_MSG_MAX, vaf->fmt, *vaf->va); + ), + TP_printk("%s", __get_str(msg)) +); + +DEFINE_EVENT(xhci_log_msg, xhci_dbg_address, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DEFINE_EVENT(xhci_log_msg, xhci_dbg_context_change, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DEFINE_EVENT(xhci_log_msg, xhci_dbg_quirks, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DEFINE_EVENT(xhci_log_msg, xhci_dbg_reset_ep, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DEFINE_EVENT(xhci_log_msg, xhci_dbg_cancel_urb, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DEFINE_EVENT(xhci_log_msg, xhci_dbg_init, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DEFINE_EVENT(xhci_log_msg, xhci_dbg_ring_expansion, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DECLARE_EVENT_CLASS(xhci_log_ctx, + TP_PROTO(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, + unsigned int ep_num), + TP_ARGS(xhci, ctx, ep_num), + TP_STRUCT__entry( + __field(int, ctx_64) + __field(unsigned, ctx_type) + __field(dma_addr_t, ctx_dma) + __field(u8 *, ctx_va) + __field(unsigned, ctx_ep_num) + __field(int, slot_id) + __dynamic_array(u32, ctx_data, + ((HCC_64BYTE_CONTEXT(xhci->hcc_params) + 1) * 8) * + ((ctx->type == XHCI_CTX_TYPE_INPUT) + ep_num + 1)) + ), + TP_fast_assign( + struct usb_device *udev; + + udev = to_usb_device(xhci_to_hcd(xhci)->self.controller); + __entry->ctx_64 = HCC_64BYTE_CONTEXT(xhci->hcc_params); + __entry->ctx_type = ctx->type; + __entry->ctx_dma = ctx->dma; + __entry->ctx_va = ctx->bytes; + __entry->slot_id = udev->slot_id; + __entry->ctx_ep_num = ep_num; + memcpy(__get_dynamic_array(ctx_data), ctx->bytes, + ((HCC_64BYTE_CONTEXT(xhci->hcc_params) + 1) * 32) * + ((ctx->type == XHCI_CTX_TYPE_INPUT) + ep_num + 1)); + ), + TP_printk("\nctx_64=%d, ctx_type=%u, ctx_dma=@%llx, ctx_va=@%p", + __entry->ctx_64, __entry->ctx_type, + (unsigned long long) __entry->ctx_dma, __entry->ctx_va + ) +); + +DEFINE_EVENT(xhci_log_ctx, xhci_address_ctx, + TP_PROTO(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, + unsigned int ep_num), + TP_ARGS(xhci, ctx, ep_num) +); + +DECLARE_EVENT_CLASS(xhci_log_event, + TP_PROTO(void *trb_va, struct xhci_generic_trb *ev), + TP_ARGS(trb_va, ev), + TP_STRUCT__entry( + __field(void *, va) + __field(u64, dma) + __field(u32, status) + __field(u32, flags) + __dynamic_array(__le32, trb, 4) + ), + TP_fast_assign( + __entry->va = trb_va; + __entry->dma = le64_to_cpu(((u64)ev->field[1]) << 32 | + ev->field[0]); + __entry->status = le32_to_cpu(ev->field[2]); + __entry->flags = le32_to_cpu(ev->field[3]); + memcpy(__get_dynamic_array(trb), trb_va, + sizeof(struct xhci_generic_trb)); + ), + TP_printk("\ntrb_dma=@%llx, trb_va=@%p, status=%08x, flags=%08x", + (unsigned long long) __entry->dma, __entry->va, + __entry->status, __entry->flags + ) +); + +DEFINE_EVENT(xhci_log_event, xhci_cmd_completion, + TP_PROTO(void *trb_va, struct xhci_generic_trb *ev), + TP_ARGS(trb_va, ev) +); + +#endif /* __XHCI_TRACE_H */ + +/* this part must be outside header guard */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . + +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE xhci-trace + +#include <trace/define_trace.h> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index b4aa79d154b2..49b6edb84a79 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -27,8 +27,10 @@ #include <linux/moduleparam.h> #include <linux/slab.h> #include <linux/dmi.h> +#include <linux/dma-mapping.h> #include "xhci.h" +#include "xhci-trace.h" #define DRIVER_AUTHOR "Sarah Sharp" #define DRIVER_DESC "'eXtensible' Host Controller (xHC) Driver" @@ -100,7 +102,7 @@ void xhci_quiesce(struct xhci_hcd *xhci) int xhci_halt(struct xhci_hcd *xhci) { int ret; - xhci_dbg(xhci, "// Halt the HC\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "// Halt the HC"); xhci_quiesce(xhci); ret = xhci_handshake(xhci, &xhci->op_regs->status, @@ -124,7 +126,7 @@ static int xhci_start(struct xhci_hcd *xhci) temp = xhci_readl(xhci, &xhci->op_regs->command); temp |= (CMD_RUN); - xhci_dbg(xhci, "// Turn on HC, cmd = 0x%x.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "// Turn on HC, cmd = 0x%x.", temp); xhci_writel(xhci, temp, &xhci->op_regs->command); @@ -162,7 +164,7 @@ int xhci_reset(struct xhci_hcd *xhci) return 0; } - xhci_dbg(xhci, "// Reset the HC\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "// Reset the HC"); command = xhci_readl(xhci, &xhci->op_regs->command); command |= CMD_RESET; xhci_writel(xhci, command, &xhci->op_regs->command); @@ -172,7 +174,8 @@ int xhci_reset(struct xhci_hcd *xhci) if (ret) return ret; - xhci_dbg(xhci, "Wait for controller to be ready for doorbell rings\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Wait for controller to be ready for doorbell rings"); /* * xHCI cannot write to any doorbells or operational registers other * than status until the "Controller Not Ready" flag is cleared. @@ -214,14 +217,16 @@ static int xhci_setup_msi(struct xhci_hcd *xhci) ret = pci_enable_msi(pdev); if (ret) { - xhci_dbg(xhci, "failed to allocate MSI entry\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "failed to allocate MSI entry"); return ret; } - ret = request_irq(pdev->irq, (irq_handler_t)xhci_msi_irq, + ret = request_irq(pdev->irq, xhci_msi_irq, 0, "xhci_hcd", xhci_to_hcd(xhci)); if (ret) { - xhci_dbg(xhci, "disable MSI interrupt\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "disable MSI interrupt"); pci_disable_msi(pdev); } @@ -284,13 +289,14 @@ static int xhci_setup_msix(struct xhci_hcd *xhci) ret = pci_enable_msix(pdev, xhci->msix_entries, xhci->msix_count); if (ret) { - xhci_dbg(xhci, "Failed to enable MSI-X\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Failed to enable MSI-X"); goto free_entries; } for (i = 0; i < xhci->msix_count; i++) { ret = request_irq(xhci->msix_entries[i].vector, - (irq_handler_t)xhci_msi_irq, + xhci_msi_irq, 0, "xhci_hcd", xhci_to_hcd(xhci)); if (ret) goto disable_msix; @@ -300,7 +306,7 @@ static int xhci_setup_msix(struct xhci_hcd *xhci) return ret; disable_msix: - xhci_dbg(xhci, "disable MSI-X interrupt\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "disable MSI-X interrupt"); xhci_free_irq(xhci); pci_disable_msix(pdev); free_entries: @@ -329,7 +335,7 @@ static void xhci_cleanup_msix(struct xhci_hcd *xhci) return; } -static void xhci_msix_sync_irqs(struct xhci_hcd *xhci) +static void __maybe_unused xhci_msix_sync_irqs(struct xhci_hcd *xhci) { int i; @@ -342,9 +348,14 @@ static void xhci_msix_sync_irqs(struct xhci_hcd *xhci) static int xhci_try_enable_msi(struct usb_hcd *hcd) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); - struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); + struct pci_dev *pdev; int ret; + /* The xhci platform device has set up IRQs through usb_add_hcd. */ + if (xhci->quirks & XHCI_PLAT) + return 0; + + pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); /* * Some Fresco Logic host controllers advertise MSI, but fail to * generate interrupts. Don't even try to enable MSI. @@ -417,9 +428,11 @@ static void compliance_mode_recovery(unsigned long arg) * Compliance Mode Detected. Letting USB Core * handle the Warm Reset */ - xhci_dbg(xhci, "Compliance mode detected->port %d\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Compliance mode detected->port %d", i + 1); - xhci_dbg(xhci, "Attempting compliance mode recovery\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Attempting compliance mode recovery"); hcd = xhci->shared_hcd; if (hcd->state == HC_STATE_SUSPENDED) @@ -457,7 +470,8 @@ static void compliance_mode_recovery_timer_init(struct xhci_hcd *xhci) set_timer_slack(&xhci->comp_mode_recovery_timer, msecs_to_jiffies(COMP_MODE_RCVRY_MSECS)); add_timer(&xhci->comp_mode_recovery_timer); - xhci_dbg(xhci, "Compliance mode recovery timer initialized\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Compliance mode recovery timer initialized"); } /* @@ -466,7 +480,7 @@ static void compliance_mode_recovery_timer_init(struct xhci_hcd *xhci) * Systems: * Vendor: Hewlett-Packard -> System Models: Z420, Z620 and Z820 */ -static bool compliance_mode_recovery_timer_quirk_check(void) +bool xhci_compliance_mode_recovery_timer_quirk_check(void) { const char *dmi_product_name, *dmi_sys_vendor; @@ -505,19 +519,21 @@ int xhci_init(struct usb_hcd *hcd) struct xhci_hcd *xhci = hcd_to_xhci(hcd); int retval = 0; - xhci_dbg(xhci, "xhci_init\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "xhci_init"); spin_lock_init(&xhci->lock); if (xhci->hci_version == 0x95 && link_quirk) { - xhci_dbg(xhci, "QUIRK: Not clearing Link TRB chain bits.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "QUIRK: Not clearing Link TRB chain bits."); xhci->quirks |= XHCI_LINK_TRB_QUIRK; } else { - xhci_dbg(xhci, "xHCI doesn't need link TRB QUIRK\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "xHCI doesn't need link TRB QUIRK"); } retval = xhci_mem_init(xhci, GFP_KERNEL); - xhci_dbg(xhci, "Finished xhci_init\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Finished xhci_init"); /* Initializing Compliance Mode Recovery Data If Needed */ - if (compliance_mode_recovery_timer_quirk_check()) { + if (xhci_compliance_mode_recovery_timer_quirk_check()) { xhci->quirks |= XHCI_COMP_MODE_QUIRK; compliance_mode_recovery_timer_init(xhci); } @@ -528,57 +544,6 @@ int xhci_init(struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ -#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING -static void xhci_event_ring_work(unsigned long arg) -{ - unsigned long flags; - int temp; - u64 temp_64; - struct xhci_hcd *xhci = (struct xhci_hcd *) arg; - int i, j; - - xhci_dbg(xhci, "Poll event ring: %lu\n", jiffies); - - spin_lock_irqsave(&xhci->lock, flags); - temp = xhci_readl(xhci, &xhci->op_regs->status); - xhci_dbg(xhci, "op reg status = 0x%x\n", temp); - if (temp == 0xffffffff || (xhci->xhc_state & XHCI_STATE_DYING) || - (xhci->xhc_state & XHCI_STATE_HALTED)) { - xhci_dbg(xhci, "HW died, polling stopped.\n"); - spin_unlock_irqrestore(&xhci->lock, flags); - return; - } - - temp = xhci_readl(xhci, &xhci->ir_set->irq_pending); - xhci_dbg(xhci, "ir_set 0 pending = 0x%x\n", temp); - xhci_dbg(xhci, "HC error bitmask = 0x%x\n", xhci->error_bitmask); - xhci->error_bitmask = 0; - xhci_dbg(xhci, "Event ring:\n"); - xhci_debug_segment(xhci, xhci->event_ring->deq_seg); - xhci_dbg_ring_ptrs(xhci, xhci->event_ring); - temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); - temp_64 &= ~ERST_PTR_MASK; - xhci_dbg(xhci, "ERST deq = 64'h%0lx\n", (long unsigned int) temp_64); - xhci_dbg(xhci, "Command ring:\n"); - xhci_debug_segment(xhci, xhci->cmd_ring->deq_seg); - xhci_dbg_ring_ptrs(xhci, xhci->cmd_ring); - xhci_dbg_cmd_ptrs(xhci); - for (i = 0; i < MAX_HC_SLOTS; ++i) { - if (!xhci->devs[i]) - continue; - for (j = 0; j < 31; ++j) { - xhci_dbg_ep_rings(xhci, i, j, &xhci->devs[i]->eps[j]); - } - } - spin_unlock_irqrestore(&xhci->lock, flags); - - if (!xhci->zombie) - mod_timer(&xhci->event_ring_timer, jiffies + POLL_TIMEOUT * HZ); - else - xhci_dbg(xhci, "Quit polling the event ring.\n"); -} -#endif - static int xhci_run_finished(struct xhci_hcd *xhci) { if (xhci_start(xhci)) { @@ -591,7 +556,8 @@ static int xhci_run_finished(struct xhci_hcd *xhci) if (xhci->quirks & XHCI_NEC_HOST) xhci_ring_cmd_db(xhci); - xhci_dbg(xhci, "Finished xhci_run for USB3 roothub\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Finished xhci_run for USB3 roothub"); return 0; } @@ -622,23 +588,12 @@ int xhci_run(struct usb_hcd *hcd) if (!usb_hcd_is_primary_hcd(hcd)) return xhci_run_finished(xhci); - xhci_dbg(xhci, "xhci_run\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "xhci_run"); ret = xhci_try_enable_msi(hcd); if (ret) return ret; -#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING - init_timer(&xhci->event_ring_timer); - xhci->event_ring_timer.data = (unsigned long) xhci; - xhci->event_ring_timer.function = xhci_event_ring_work; - /* Poll the event ring */ - xhci->event_ring_timer.expires = jiffies + POLL_TIMEOUT * HZ; - xhci->zombie = 0; - xhci_dbg(xhci, "Setting event ring polling timer\n"); - add_timer(&xhci->event_ring_timer); -#endif - xhci_dbg(xhci, "Command ring memory map follows:\n"); xhci_debug_ring(xhci, xhci->cmd_ring); xhci_dbg_ring_ptrs(xhci, xhci->cmd_ring); @@ -651,9 +606,11 @@ int xhci_run(struct usb_hcd *hcd) xhci_dbg_ring_ptrs(xhci, xhci->event_ring); temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); temp_64 &= ~ERST_PTR_MASK; - xhci_dbg(xhci, "ERST deq = 64'h%0lx\n", (long unsigned int) temp_64); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "ERST deq = 64'h%0lx", (long unsigned int) temp_64); - xhci_dbg(xhci, "// Set the interrupt modulation register\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Set the interrupt modulation register"); temp = xhci_readl(xhci, &xhci->ir_set->irq_control); temp &= ~ER_IRQ_INTERVAL_MASK; temp |= (u32) 160; @@ -662,12 +619,13 @@ int xhci_run(struct usb_hcd *hcd) /* Set the HCD state before we enable the irqs */ temp = xhci_readl(xhci, &xhci->op_regs->command); temp |= (CMD_EIE); - xhci_dbg(xhci, "// Enable interrupts, cmd = 0x%x.\n", - temp); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Enable interrupts, cmd = 0x%x.", temp); xhci_writel(xhci, temp, &xhci->op_regs->command); temp = xhci_readl(xhci, &xhci->ir_set->irq_pending); - xhci_dbg(xhci, "// Enabling event ring interrupter %p by writing 0x%x to irq_pending\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Enabling event ring interrupter %p by writing 0x%x to irq_pending", xhci->ir_set, (unsigned int) ER_IRQ_ENABLE(temp)); xhci_writel(xhci, ER_IRQ_ENABLE(temp), &xhci->ir_set->irq_pending); @@ -677,7 +635,8 @@ int xhci_run(struct usb_hcd *hcd) xhci_queue_vendor_command(xhci, 0, 0, 0, TRB_TYPE(TRB_NEC_GET_FW)); - xhci_dbg(xhci, "Finished xhci_run for USB2 roothub\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "Finished xhci_run for USB2 roothub"); return 0; } @@ -725,24 +684,20 @@ void xhci_stop(struct usb_hcd *hcd) xhci_cleanup_msix(xhci); -#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING - /* Tell the event ring poll function not to reschedule */ - xhci->zombie = 1; - del_timer_sync(&xhci->event_ring_timer); -#endif - /* Deleting Compliance Mode Recovery Timer */ if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) && (!(xhci_all_ports_seen_u0(xhci)))) { del_timer_sync(&xhci->comp_mode_recovery_timer); - xhci_dbg(xhci, "%s: compliance mode recovery timer deleted\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "%s: compliance mode recovery timer deleted", __func__); } if (xhci->quirks & XHCI_AMD_PLL_FIX) usb_amd_dev_put(); - xhci_dbg(xhci, "// Disabling event ring interrupts\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Disabling event ring interrupts"); temp = xhci_readl(xhci, &xhci->op_regs->status); xhci_writel(xhci, temp & ~STS_EINT, &xhci->op_regs->status); temp = xhci_readl(xhci, &xhci->ir_set->irq_pending); @@ -750,10 +705,11 @@ void xhci_stop(struct usb_hcd *hcd) &xhci->ir_set->irq_pending); xhci_print_ir_set(xhci, 0); - xhci_dbg(xhci, "cleaning up memory\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "cleaning up memory"); xhci_mem_cleanup(xhci); - xhci_dbg(xhci, "xhci_stop completed - status = %x\n", - xhci_readl(xhci, &xhci->op_regs->status)); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "xhci_stop completed - status = %x", + xhci_readl(xhci, &xhci->op_regs->status)); } /* @@ -778,8 +734,9 @@ void xhci_shutdown(struct usb_hcd *hcd) xhci_cleanup_msix(xhci); - xhci_dbg(xhci, "xhci_shutdown completed - status = %x\n", - xhci_readl(xhci, &xhci->op_regs->status)); + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "xhci_shutdown completed - status = %x", + xhci_readl(xhci, &xhci->op_regs->status)); } #ifdef CONFIG_PM @@ -820,7 +777,8 @@ static void xhci_set_cmd_ring_deq(struct xhci_hcd *xhci) xhci->cmd_ring->dequeue) & (u64) ~CMD_RING_RSVD_BITS) | xhci->cmd_ring->cycle_state; - xhci_dbg(xhci, "// Setting command ring address to 0x%llx\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_init, + "// Setting command ring address to 0x%llx", (long unsigned long) val_64); xhci_write_64(xhci, val_64, &xhci->op_regs->cmd_ring); } @@ -933,7 +891,8 @@ int xhci_suspend(struct xhci_hcd *xhci) if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) && (!(xhci_all_ports_seen_u0(xhci)))) { del_timer_sync(&xhci->comp_mode_recovery_timer); - xhci_dbg(xhci, "%s: compliance mode recovery timer deleted\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "%s: compliance mode recovery timer deleted", __func__); } @@ -956,6 +915,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) struct usb_hcd *hcd = xhci_to_hcd(xhci); struct usb_hcd *secondary_hcd; int retval = 0; + bool comp_timer_running = false; /* Wait a bit if either of the roothubs need to settle from the * transition into bus suspend. @@ -993,6 +953,14 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) /* If restore operation fails, re-initialize the HC during resume */ if ((temp & STS_SRE) || hibernated) { + + if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) && + !(xhci_all_ports_seen_u0(xhci))) { + del_timer_sync(&xhci->comp_mode_recovery_timer); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Compliance Mode Recovery Timer deleted!"); + } + /* Let the USB core know _both_ roothubs lost power. */ usb_root_hub_lost_power(xhci->main_hcd->self.root_hub); usb_root_hub_lost_power(xhci->shared_hcd->self.root_hub); @@ -1003,12 +971,6 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) spin_unlock_irq(&xhci->lock); xhci_cleanup_msix(xhci); -#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING - /* Tell the event ring poll function not to reschedule */ - xhci->zombie = 1; - del_timer_sync(&xhci->event_ring_timer); -#endif - xhci_dbg(xhci, "// Disabling event ring interrupts\n"); temp = xhci_readl(xhci, &xhci->op_regs->status); xhci_writel(xhci, temp & ~STS_EINT, &xhci->op_regs->status); @@ -1035,6 +997,8 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) retval = xhci_init(hcd->primary_hcd); if (retval) return retval; + comp_timer_running = true; + xhci_dbg(xhci, "Start the primary HCD\n"); retval = xhci_run(hcd->primary_hcd); if (!retval) { @@ -1076,7 +1040,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) * to suffer the Compliance Mode issue again. It doesn't matter if * ports have entered previously to U0 before system's suspension. */ - if (xhci->quirks & XHCI_COMP_MODE_QUIRK) + if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) && !comp_timer_running) compliance_mode_recovery_timer_init(xhci); /* Re-enable port polling. */ @@ -1111,6 +1075,16 @@ unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc) return index; } +/* The reverse operation to xhci_get_endpoint_index. Calculate the USB endpoint + * address from the XHCI endpoint index. + */ +unsigned int xhci_get_endpoint_address(unsigned int ep_index) +{ + unsigned int number = DIV_ROUND_UP(ep_index, 2); + unsigned int direction = ep_index % 2 ? USB_DIR_OUT : USB_DIR_IN; + return direction | number; +} + /* Find the flag for this endpoint (for use in the control context). Use the * endpoint index to create a bitmask. The slot context is bit 0, endpoint 0 is * bit 1, etc. @@ -1150,35 +1124,33 @@ static int xhci_check_args(struct usb_hcd *hcd, struct usb_device *udev, struct xhci_virt_device *virt_dev; if (!hcd || (check_ep && !ep) || !udev) { - printk(KERN_DEBUG "xHCI %s called with invalid args\n", - func); + pr_debug("xHCI %s called with invalid args\n", func); return -EINVAL; } if (!udev->parent) { - printk(KERN_DEBUG "xHCI %s called for root hub\n", - func); + pr_debug("xHCI %s called for root hub\n", func); return 0; } xhci = hcd_to_xhci(hcd); - if (xhci->xhc_state & XHCI_STATE_HALTED) - return -ENODEV; - if (check_virt_dev) { if (!udev->slot_id || !xhci->devs[udev->slot_id]) { - printk(KERN_DEBUG "xHCI %s called with unaddressed " - "device\n", func); + xhci_dbg(xhci, "xHCI %s called with unaddressed device\n", + func); return -EINVAL; } virt_dev = xhci->devs[udev->slot_id]; if (virt_dev->udev != udev) { - printk(KERN_DEBUG "xHCI %s called with udev and " + xhci_dbg(xhci, "xHCI %s called with udev and " "virt_dev does not match\n", func); return -EINVAL; } } + if (xhci->xhc_state & XHCI_STATE_HALTED) + return -ENODEV; + return 1; } @@ -1208,26 +1180,36 @@ static int xhci_check_maxpacket(struct xhci_hcd *xhci, unsigned int slot_id, hw_max_packet_size = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2)); max_packet_size = usb_endpoint_maxp(&urb->dev->ep0.desc); if (hw_max_packet_size != max_packet_size) { - xhci_dbg(xhci, "Max Packet Size for ep 0 changed.\n"); - xhci_dbg(xhci, "Max packet size in usb_device = %d\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Max Packet Size for ep 0 changed."); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Max packet size in usb_device = %d", max_packet_size); - xhci_dbg(xhci, "Max packet size in xHCI HW = %d\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Max packet size in xHCI HW = %d", hw_max_packet_size); - xhci_dbg(xhci, "Issuing evaluate context command.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Issuing evaluate context command."); + /* Set up the input context flags for the command */ + /* FIXME: This won't work if a non-default control endpoint + * changes max packet sizes. + */ + in_ctx = xhci->devs[slot_id]->in_ctx; + ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return -ENOMEM; + } /* Set up the modified control endpoint 0 */ xhci_endpoint_copy(xhci, xhci->devs[slot_id]->in_ctx, xhci->devs[slot_id]->out_ctx, ep_index); - in_ctx = xhci->devs[slot_id]->in_ctx; + ep_ctx = xhci_get_ep_ctx(xhci, in_ctx, ep_index); ep_ctx->ep_info2 &= cpu_to_le32(~MAX_PACKET_MASK); ep_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(max_packet_size)); - /* Set up the input context flags for the command */ - /* FIXME: This won't work if a non-default control endpoint - * changes max packet sizes. - */ - ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); ctrl_ctx->add_flags = cpu_to_le32(EP0_FLAG); ctrl_ctx->drop_flags = 0; @@ -1472,7 +1454,8 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) goto done; temp = xhci_readl(xhci, &xhci->op_regs->status); if (temp == 0xffffffff || (xhci->xhc_state & XHCI_STATE_HALTED)) { - xhci_dbg(xhci, "HW died, freeing TD.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "HW died, freeing TD."); urb_priv = urb->hcpriv; for (i = urb_priv->td_cnt; i < urb_priv->length; i++) { td = urb_priv->td[i]; @@ -1490,8 +1473,9 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) } if ((xhci->xhc_state & XHCI_STATE_DYING) || (xhci->xhc_state & XHCI_STATE_HALTED)) { - xhci_dbg(xhci, "Ep 0x%x: URB %p to be canceled on " - "non-responsive xHCI host.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Ep 0x%x: URB %p to be canceled on " + "non-responsive xHCI host.", urb->ep->desc.bEndpointAddress, urb); /* Let the stop endpoint command watchdog timer (which set this * state) finish cleaning up the endpoint TD lists. We must @@ -1512,8 +1496,9 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) urb_priv = urb->hcpriv; i = urb_priv->td_cnt; if (i < urb_priv->length) - xhci_dbg(xhci, "Cancel URB %p, dev %s, ep 0x%x, " - "starting at offset 0x%llx\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, + "Cancel URB %p, dev %s, ep 0x%x, " + "starting at offset 0x%llx", urb, urb->dev->devpath, urb->ep->desc.bEndpointAddress, (unsigned long long) xhci_trb_virt_to_dma( @@ -1587,6 +1572,12 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, in_ctx = xhci->devs[udev->slot_id]->in_ctx; out_ctx = xhci->devs[udev->slot_id]->out_ctx; ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return 0; + } + ep_index = xhci_get_endpoint_index(&ep->desc); ep_ctx = xhci_get_ep_ctx(xhci, out_ctx, ep_index); /* If the HC already knows the endpoint is disabled, @@ -1681,8 +1672,13 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, in_ctx = virt_dev->in_ctx; out_ctx = virt_dev->out_ctx; ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); - ep_index = xhci_get_endpoint_index(&ep->desc); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return 0; + } + ep_index = xhci_get_endpoint_index(&ep->desc); /* If this endpoint is already in use, and the upper layers are trying * to add it again without dropping it, reject the addition. */ @@ -1755,12 +1751,18 @@ static void xhci_zero_in_ctx(struct xhci_hcd *xhci, struct xhci_virt_device *vir struct xhci_slot_ctx *slot_ctx; int i; + ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return; + } + /* When a device's add flag and drop flag are zero, any subsequent * configure endpoint command will leave that endpoint's state * untouched. Make sure we don't leave any old state in the input * endpoint contexts. */ - ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx); ctrl_ctx->drop_flags = 0; ctrl_ctx->add_flags = 0; slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx); @@ -1808,7 +1810,8 @@ static int xhci_configure_endpoint_result(struct xhci_hcd *xhci, ret = -ENODEV; break; case COMP_SUCCESS: - dev_dbg(&udev->dev, "Successful Endpoint Configure command\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Successful Endpoint Configure command"); ret = 0; break; default: @@ -1854,7 +1857,8 @@ static int xhci_evaluate_context_result(struct xhci_hcd *xhci, ret = -EINVAL; break; case COMP_SUCCESS: - dev_dbg(&udev->dev, "Successful evaluate context command\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Successful evaluate context command"); ret = 0; break; default: @@ -1867,13 +1871,11 @@ static int xhci_evaluate_context_result(struct xhci_hcd *xhci, } static u32 xhci_count_num_new_endpoints(struct xhci_hcd *xhci, - struct xhci_container_ctx *in_ctx) + struct xhci_input_control_ctx *ctrl_ctx) { - struct xhci_input_control_ctx *ctrl_ctx; u32 valid_add_flags; u32 valid_drop_flags; - ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); /* Ignore the slot flag (bit 0), and the default control endpoint flag * (bit 1). The default control endpoint is added during the Address * Device command and is never removed until the slot is disabled. @@ -1890,13 +1892,11 @@ static u32 xhci_count_num_new_endpoints(struct xhci_hcd *xhci, } static unsigned int xhci_count_num_dropped_endpoints(struct xhci_hcd *xhci, - struct xhci_container_ctx *in_ctx) + struct xhci_input_control_ctx *ctrl_ctx) { - struct xhci_input_control_ctx *ctrl_ctx; u32 valid_add_flags; u32 valid_drop_flags; - ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); valid_add_flags = ctrl_ctx->add_flags >> 2; valid_drop_flags = ctrl_ctx->drop_flags >> 2; @@ -1918,20 +1918,22 @@ static unsigned int xhci_count_num_dropped_endpoints(struct xhci_hcd *xhci, * Must be called with xhci->lock held. */ static int xhci_reserve_host_resources(struct xhci_hcd *xhci, - struct xhci_container_ctx *in_ctx) + struct xhci_input_control_ctx *ctrl_ctx) { u32 added_eps; - added_eps = xhci_count_num_new_endpoints(xhci, in_ctx); + added_eps = xhci_count_num_new_endpoints(xhci, ctrl_ctx); if (xhci->num_active_eps + added_eps > xhci->limit_active_eps) { - xhci_dbg(xhci, "Not enough ep ctxs: " - "%u active, need to add %u, limit is %u.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Not enough ep ctxs: " + "%u active, need to add %u, limit is %u.", xhci->num_active_eps, added_eps, xhci->limit_active_eps); return -ENOMEM; } xhci->num_active_eps += added_eps; - xhci_dbg(xhci, "Adding %u ep ctxs, %u now active.\n", added_eps, + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Adding %u ep ctxs, %u now active.", added_eps, xhci->num_active_eps); return 0; } @@ -1943,13 +1945,14 @@ static int xhci_reserve_host_resources(struct xhci_hcd *xhci, * Must be called with xhci->lock held. */ static void xhci_free_host_resources(struct xhci_hcd *xhci, - struct xhci_container_ctx *in_ctx) + struct xhci_input_control_ctx *ctrl_ctx) { u32 num_failed_eps; - num_failed_eps = xhci_count_num_new_endpoints(xhci, in_ctx); + num_failed_eps = xhci_count_num_new_endpoints(xhci, ctrl_ctx); xhci->num_active_eps -= num_failed_eps; - xhci_dbg(xhci, "Removing %u failed ep ctxs, %u now active.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Removing %u failed ep ctxs, %u now active.", num_failed_eps, xhci->num_active_eps); } @@ -1961,14 +1964,15 @@ static void xhci_free_host_resources(struct xhci_hcd *xhci, * Must be called with xhci->lock held. */ static void xhci_finish_resource_reservation(struct xhci_hcd *xhci, - struct xhci_container_ctx *in_ctx) + struct xhci_input_control_ctx *ctrl_ctx) { u32 num_dropped_eps; - num_dropped_eps = xhci_count_num_dropped_endpoints(xhci, in_ctx); + num_dropped_eps = xhci_count_num_dropped_endpoints(xhci, ctrl_ctx); xhci->num_active_eps -= num_dropped_eps; if (num_dropped_eps) - xhci_dbg(xhci, "Removing %u dropped ep ctxs, %u now active.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Removing %u dropped ep ctxs, %u now active.", num_dropped_eps, xhci->num_active_eps); } @@ -2129,18 +2133,21 @@ static int xhci_check_bw_table(struct xhci_hcd *xhci, * that the HS bus has enough bandwidth if we are activing a new TT. */ if (virt_dev->tt_info) { - xhci_dbg(xhci, "Recalculating BW for rootport %u\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Recalculating BW for rootport %u", virt_dev->real_port); if (xhci_check_tt_bw_table(xhci, virt_dev, old_active_eps)) { xhci_warn(xhci, "Not enough bandwidth on HS bus for " "newly activated TT.\n"); return -ENOMEM; } - xhci_dbg(xhci, "Recalculating BW for TT slot %u port %u\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Recalculating BW for TT slot %u port %u", virt_dev->tt_info->slot_id, virt_dev->tt_info->ttport); } else { - xhci_dbg(xhci, "Recalculating BW for rootport %u\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Recalculating BW for rootport %u", virt_dev->real_port); } @@ -2248,8 +2255,9 @@ static int xhci_check_bw_table(struct xhci_hcd *xhci, xhci->rh_bw[port_index].num_active_tts; } - xhci_dbg(xhci, "Final bandwidth: %u, Limit: %u, Reserved: %u, " - "Available: %u " "percent\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Final bandwidth: %u, Limit: %u, Reserved: %u, " + "Available: %u " "percent", bw_used, max_bandwidth, bw_reserved, (max_bandwidth - bw_used - bw_reserved) * 100 / max_bandwidth); @@ -2460,6 +2468,11 @@ static int xhci_reserve_bandwidth(struct xhci_hcd *xhci, old_active_eps = virt_dev->tt_info->active_eps; ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return -ENOMEM; + } for (i = 0; i < 31; i++) { if (!EP_IS_ADDED(ctrl_ctx, i) && !EP_IS_DROPPED(ctrl_ctx, i)) @@ -2544,6 +2557,7 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, int timeleft; unsigned long flags; struct xhci_container_ctx *in_ctx; + struct xhci_input_control_ctx *ctrl_ctx; struct completion *cmd_completion; u32 *cmd_status; struct xhci_virt_device *virt_dev; @@ -2556,9 +2570,16 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, in_ctx = command->in_ctx; else in_ctx = virt_dev->in_ctx; + ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); + if (!ctrl_ctx) { + spin_unlock_irqrestore(&xhci->lock, flags); + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return -ENOMEM; + } if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK) && - xhci_reserve_host_resources(xhci, in_ctx)) { + xhci_reserve_host_resources(xhci, ctrl_ctx)) { spin_unlock_irqrestore(&xhci->lock, flags); xhci_warn(xhci, "Not enough host resources, " "active endpoint contexts = %u\n", @@ -2568,7 +2589,7 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, if ((xhci->quirks & XHCI_SW_BW_CHECKING) && xhci_reserve_bandwidth(xhci, virt_dev, in_ctx)) { if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK)) - xhci_free_host_resources(xhci, in_ctx); + xhci_free_host_resources(xhci, ctrl_ctx); spin_unlock_irqrestore(&xhci->lock, flags); xhci_warn(xhci, "Not enough bandwidth\n"); return -ENOMEM; @@ -2604,9 +2625,10 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, if (command) list_del(&command->cmd_list); if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK)) - xhci_free_host_resources(xhci, in_ctx); + xhci_free_host_resources(xhci, ctrl_ctx); spin_unlock_irqrestore(&xhci->lock, flags); - xhci_dbg(xhci, "FIXME allocate a new ring segment\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "FIXME allocate a new ring segment"); return -ENOMEM; } xhci_ring_cmd_db(xhci); @@ -2640,9 +2662,9 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, * Otherwise, clean up the estimate to include dropped eps. */ if (ret) - xhci_free_host_resources(xhci, in_ctx); + xhci_free_host_resources(xhci, ctrl_ctx); else - xhci_finish_resource_reservation(xhci, in_ctx); + xhci_finish_resource_reservation(xhci, ctrl_ctx); spin_unlock_irqrestore(&xhci->lock, flags); } return ret; @@ -2679,6 +2701,11 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) /* See section 4.6.6 - A0 = 1; A1 = D0 = D1 = 0 */ ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return -ENOMEM; + } ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG); ctrl_ctx->add_flags &= cpu_to_le32(~EP0_FLAG); ctrl_ctx->drop_flags &= cpu_to_le32(~(SLOT_FLAG | EP0_FLAG)); @@ -2757,10 +2784,9 @@ void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) static void xhci_setup_input_ctx_for_config_ep(struct xhci_hcd *xhci, struct xhci_container_ctx *in_ctx, struct xhci_container_ctx *out_ctx, + struct xhci_input_control_ctx *ctrl_ctx, u32 add_flags, u32 drop_flags) { - struct xhci_input_control_ctx *ctrl_ctx; - ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); ctrl_ctx->add_flags = cpu_to_le32(add_flags); ctrl_ctx->drop_flags = cpu_to_le32(drop_flags); xhci_slot_copy(xhci, in_ctx, out_ctx); @@ -2774,14 +2800,22 @@ static void xhci_setup_input_ctx_for_quirk(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, struct xhci_dequeue_state *deq_state) { + struct xhci_input_control_ctx *ctrl_ctx; struct xhci_container_ctx *in_ctx; struct xhci_ep_ctx *ep_ctx; u32 added_ctxs; dma_addr_t addr; + in_ctx = xhci->devs[slot_id]->in_ctx; + ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return; + } + xhci_endpoint_copy(xhci, xhci->devs[slot_id]->in_ctx, xhci->devs[slot_id]->out_ctx, ep_index); - in_ctx = xhci->devs[slot_id]->in_ctx; ep_ctx = xhci_get_ep_ctx(xhci, in_ctx, ep_index); addr = xhci_trb_virt_to_dma(deq_state->new_deq_seg, deq_state->new_deq_ptr); @@ -2797,7 +2831,8 @@ static void xhci_setup_input_ctx_for_quirk(struct xhci_hcd *xhci, added_ctxs = xhci_get_endpoint_flag_from_index(ep_index); xhci_setup_input_ctx_for_config_ep(xhci, xhci->devs[slot_id]->in_ctx, - xhci->devs[slot_id]->out_ctx, added_ctxs, added_ctxs); + xhci->devs[slot_id]->out_ctx, ctrl_ctx, + added_ctxs, added_ctxs); } void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, @@ -2806,7 +2841,8 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, struct xhci_dequeue_state deq_state; struct xhci_virt_ep *ep; - xhci_dbg(xhci, "Cleaning up stalled endpoint ring\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, + "Cleaning up stalled endpoint ring"); ep = &xhci->devs[udev->slot_id]->eps[ep_index]; /* We need to move the HW's dequeue pointer past this TD, * or it will attempt to resend it on the next doorbell ring. @@ -2819,7 +2855,8 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, * issue a configure endpoint command later. */ if (!(xhci->quirks & XHCI_RESET_EP_QUIRK)) { - xhci_dbg(xhci, "Queueing new dequeue state\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, + "Queueing new dequeue state"); xhci_queue_new_dequeue_state(xhci, udev->slot_id, ep_index, ep->stopped_stream, &deq_state); } else { @@ -2828,8 +2865,9 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, * XXX: No idea how this hardware will react when stream rings * are enabled. */ - xhci_dbg(xhci, "Setting up input context for " - "configure endpoint command\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Setting up input context for " + "configure endpoint command"); xhci_setup_input_ctx_for_quirk(xhci, udev->slot_id, ep_index, &deq_state); } @@ -2861,16 +2899,19 @@ void xhci_endpoint_reset(struct usb_hcd *hcd, ep_index = xhci_get_endpoint_index(&ep->desc); virt_ep = &xhci->devs[udev->slot_id]->eps[ep_index]; if (!virt_ep->stopped_td) { - xhci_dbg(xhci, "Endpoint 0x%x not halted, refusing to reset.\n", - ep->desc.bEndpointAddress); + xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, + "Endpoint 0x%x not halted, refusing to reset.", + ep->desc.bEndpointAddress); return; } if (usb_endpoint_xfer_control(&ep->desc)) { - xhci_dbg(xhci, "Control endpoint stall already handled.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, + "Control endpoint stall already handled."); return; } - xhci_dbg(xhci, "Queueing reset endpoint command\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, + "Queueing reset endpoint command"); spin_lock_irqsave(&xhci->lock, flags); ret = xhci_queue_reset_ep(xhci, udev->slot_id, ep_index); /* @@ -3010,8 +3051,8 @@ static u32 xhci_calculate_no_streams_bitmask(struct xhci_hcd *xhci, /* Are streams already being freed for the endpoint? */ if (ep_state & EP_GETTING_NO_STREAMS) { xhci_warn(xhci, "WARN Can't disable streams for " - "endpoint 0x%x\n, " - "streams are being disabled already.", + "endpoint 0x%x, " + "streams are being disabled already\n", eps[i]->desc.bEndpointAddress); return 0; } @@ -3019,8 +3060,8 @@ static u32 xhci_calculate_no_streams_bitmask(struct xhci_hcd *xhci, if (!(ep_state & EP_HAS_STREAMS) && !(ep_state & EP_GETTING_STREAMS)) { xhci_warn(xhci, "WARN Can't disable streams for " - "endpoint 0x%x\n, " - "streams are already disabled!", + "endpoint 0x%x, " + "streams are already disabled!\n", eps[i]->desc.bEndpointAddress); xhci_warn(xhci, "WARN xhci_free_streams() called " "with non-streams endpoint\n"); @@ -3055,6 +3096,7 @@ int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, struct xhci_hcd *xhci; struct xhci_virt_device *vdev; struct xhci_command *config_cmd; + struct xhci_input_control_ctx *ctrl_ctx; unsigned int ep_index; unsigned int num_stream_ctxs; unsigned long flags; @@ -3076,6 +3118,13 @@ int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, xhci_dbg(xhci, "Could not allocate xHCI command structure.\n"); return -ENOMEM; } + ctrl_ctx = xhci_get_input_control_ctx(xhci, config_cmd->in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + xhci_free_command(xhci, config_cmd); + return -ENOMEM; + } /* Check to make sure all endpoints are not already configured for * streams. While we're at it, find the maximum number of streams that @@ -3142,7 +3191,8 @@ int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, * and add the updated copy from the input context. */ xhci_setup_input_ctx_for_config_ep(xhci, config_cmd->in_ctx, - vdev->out_ctx, changed_ep_bitmask, changed_ep_bitmask); + vdev->out_ctx, ctrl_ctx, + changed_ep_bitmask, changed_ep_bitmask); /* Issue and wait for the configure endpoint command */ ret = xhci_configure_endpoint(xhci, udev, config_cmd, @@ -3200,6 +3250,7 @@ int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, struct xhci_hcd *xhci; struct xhci_virt_device *vdev; struct xhci_command *command; + struct xhci_input_control_ctx *ctrl_ctx; unsigned int ep_index; unsigned long flags; u32 changed_ep_bitmask; @@ -3222,6 +3273,14 @@ int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, */ ep_index = xhci_get_endpoint_index(&eps[0]->desc); command = vdev->eps[ep_index].stream_info->free_streams_command; + ctrl_ctx = xhci_get_input_control_ctx(xhci, command->in_ctx); + if (!ctrl_ctx) { + spin_unlock_irqrestore(&xhci->lock, flags); + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return -EINVAL; + } + for (i = 0; i < num_eps; i++) { struct xhci_ep_ctx *ep_ctx; @@ -3236,7 +3295,8 @@ int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, &vdev->eps[ep_index]); } xhci_setup_input_ctx_for_config_ep(xhci, command->in_ctx, - vdev->out_ctx, changed_ep_bitmask, changed_ep_bitmask); + vdev->out_ctx, ctrl_ctx, + changed_ep_bitmask, changed_ep_bitmask); spin_unlock_irqrestore(&xhci->lock, flags); /* Issue and wait for the configure endpoint command, @@ -3289,8 +3349,9 @@ void xhci_free_device_endpoint_resources(struct xhci_hcd *xhci, } xhci->num_active_eps -= num_dropped_eps; if (num_dropped_eps) - xhci_dbg(xhci, "Dropped %u ep ctxs, flags = 0x%x, " - "%u now active.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Dropped %u ep ctxs, flags = 0x%x, " + "%u now active.", num_dropped_eps, drop_flags, xhci->num_active_eps); } @@ -3424,10 +3485,10 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev) switch (ret) { case COMP_EBADSLT: /* 0.95 completion code for bad slot ID */ case COMP_CTX_STATE: /* 0.96 completion code for same thing */ - xhci_info(xhci, "Can't reset device (slot ID %u) in %s state\n", + xhci_dbg(xhci, "Can't reset device (slot ID %u) in %s state\n", slot_id, xhci_get_slot_state(xhci, virt_dev->out_ctx)); - xhci_info(xhci, "Not freeing device rings.\n"); + xhci_dbg(xhci, "Not freeing device rings.\n"); /* Don't treat this as an error. May change my mind later. */ ret = 0; goto command_cleanup; @@ -3500,6 +3561,16 @@ void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) u32 state; int i, ret; +#ifndef CONFIG_USB_DEFAULT_PERSIST + /* + * We called pm_runtime_get_noresume when the device was attached. + * Decrement the counter here to allow controller to runtime suspend + * if no devices remain. + */ + if (xhci->quirks & XHCI_RESET_ON_RESUME) + pm_runtime_put_noidle(hcd->self.controller); +#endif + ret = xhci_check_args(hcd, udev, NULL, 0, true, __func__); /* If the host is halted due to driver unload, we still need to free the * device. @@ -3552,13 +3623,15 @@ void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) static int xhci_reserve_host_control_ep_resources(struct xhci_hcd *xhci) { if (xhci->num_active_eps + 1 > xhci->limit_active_eps) { - xhci_dbg(xhci, "Not enough ep ctxs: " - "%u active, need to add 1, limit is %u.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Not enough ep ctxs: " + "%u active, need to add 1, limit is %u.", xhci->num_active_eps, xhci->limit_active_eps); return -ENOMEM; } xhci->num_active_eps += 1; - xhci_dbg(xhci, "Adding 1 ep ctx, %u now active.\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, + "Adding 1 ep ctx, %u now active.", xhci->num_active_eps); return 0; } @@ -3623,6 +3696,16 @@ int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) goto disable_slot; } udev->slot_id = xhci->slot_id; + +#ifndef CONFIG_USB_DEFAULT_PERSIST + /* + * If resetting upon resume, we can't put the controller into runtime + * suspend if there is a device attached. + */ + if (xhci->quirks & XHCI_RESET_ON_RESUME) + pm_runtime_get_noresume(hcd->self.controller); +#endif + /* Is this a LS or FS device under a HS hub? */ /* Hub or peripherial? */ return 1; @@ -3658,7 +3741,8 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) union xhci_trb *cmd_trb; if (!udev->slot_id) { - xhci_dbg(xhci, "Bad Slot ID %d\n", udev->slot_id); + xhci_dbg_trace(xhci, trace_xhci_dbg_address, + "Bad Slot ID %d", udev->slot_id); return -EINVAL; } @@ -3676,6 +3760,12 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) } slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx); + ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return -EINVAL; + } /* * If this is the first Set Address since device plug-in or * virt_device realloaction after a resume with an xHCI power loss, @@ -3686,12 +3776,13 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) /* Otherwise, update the control endpoint ring enqueue pointer. */ else xhci_copy_ep0_dequeue_into_input_ctx(xhci, udev); - ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx); ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG); ctrl_ctx->drop_flags = 0; xhci_dbg(xhci, "Slot ID %d Input Context:\n", udev->slot_id); xhci_dbg_ctx(xhci, virt_dev->in_ctx, 2); + trace_xhci_address_ctx(xhci, virt_dev->in_ctx, + slot_ctx->dev_info >> 27); spin_lock_irqsave(&xhci->lock, flags); cmd_trb = xhci->cmd_ring->dequeue; @@ -3699,7 +3790,8 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) udev->slot_id); if (ret) { spin_unlock_irqrestore(&xhci->lock, flags); - xhci_dbg(xhci, "FIXME: allocate a command ring segment\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_address, + "FIXME: allocate a command ring segment"); return ret; } xhci_ring_cmd_db(xhci); @@ -3739,13 +3831,15 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) ret = -ENODEV; break; case COMP_SUCCESS: - xhci_dbg(xhci, "Successful Address Device command\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_address, + "Successful Address Device command"); break; default: xhci_err(xhci, "ERROR: unexpected command completion " "code 0x%x.\n", virt_dev->cmd_status); xhci_dbg(xhci, "Slot ID %d Output Context:\n", udev->slot_id); xhci_dbg_ctx(xhci, virt_dev->out_ctx, 2); + trace_xhci_address_ctx(xhci, virt_dev->out_ctx, 1); ret = -EINVAL; break; } @@ -3753,16 +3847,21 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) return ret; } temp_64 = xhci_read_64(xhci, &xhci->op_regs->dcbaa_ptr); - xhci_dbg(xhci, "Op regs DCBAA ptr = %#016llx\n", temp_64); - xhci_dbg(xhci, "Slot ID %d dcbaa entry @%p = %#016llx\n", - udev->slot_id, - &xhci->dcbaa->dev_context_ptrs[udev->slot_id], - (unsigned long long) - le64_to_cpu(xhci->dcbaa->dev_context_ptrs[udev->slot_id])); - xhci_dbg(xhci, "Output Context DMA address = %#08llx\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_address, + "Op regs DCBAA ptr = %#016llx", temp_64); + xhci_dbg_trace(xhci, trace_xhci_dbg_address, + "Slot ID %d dcbaa entry @%p = %#016llx", + udev->slot_id, + &xhci->dcbaa->dev_context_ptrs[udev->slot_id], + (unsigned long long) + le64_to_cpu(xhci->dcbaa->dev_context_ptrs[udev->slot_id])); + xhci_dbg_trace(xhci, trace_xhci_dbg_address, + "Output Context DMA address = %#08llx", (unsigned long long)virt_dev->out_ctx->dma); xhci_dbg(xhci, "Slot ID %d Input Context:\n", udev->slot_id); xhci_dbg_ctx(xhci, virt_dev->in_ctx, 2); + trace_xhci_address_ctx(xhci, virt_dev->in_ctx, + slot_ctx->dev_info >> 27); xhci_dbg(xhci, "Slot ID %d Output Context:\n", udev->slot_id); xhci_dbg_ctx(xhci, virt_dev->out_ctx, 2); /* @@ -3770,6 +3869,8 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) * address given back to us by the HC. */ slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); + trace_xhci_address_ctx(xhci, virt_dev->out_ctx, + slot_ctx->dev_info >> 27); /* Use kernel assigned address for devices; store xHC assigned * address locally. */ virt_dev->address = (le32_to_cpu(slot_ctx->dev_state) & DEV_ADDR_MASK) @@ -3778,7 +3879,8 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) ctrl_ctx->add_flags = 0; ctrl_ctx->drop_flags = 0; - xhci_dbg(xhci, "Internal device address = %d\n", virt_dev->address); + xhci_dbg_trace(xhci, trace_xhci_dbg_address, + "Internal device address = %d", virt_dev->address); return 0; } @@ -3805,6 +3907,64 @@ int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1) return raw_port; } +/* + * Issue an Evaluate Context command to change the Maximum Exit Latency in the + * slot context. If that succeeds, store the new MEL in the xhci_virt_device. + */ +static int __maybe_unused xhci_change_max_exit_latency(struct xhci_hcd *xhci, + struct usb_device *udev, u16 max_exit_latency) +{ + struct xhci_virt_device *virt_dev; + struct xhci_command *command; + struct xhci_input_control_ctx *ctrl_ctx; + struct xhci_slot_ctx *slot_ctx; + unsigned long flags; + int ret; + + spin_lock_irqsave(&xhci->lock, flags); + if (max_exit_latency == xhci->devs[udev->slot_id]->current_mel) { + spin_unlock_irqrestore(&xhci->lock, flags); + return 0; + } + + /* Attempt to issue an Evaluate Context command to change the MEL. */ + virt_dev = xhci->devs[udev->slot_id]; + command = xhci->lpm_command; + ctrl_ctx = xhci_get_input_control_ctx(xhci, command->in_ctx); + if (!ctrl_ctx) { + spin_unlock_irqrestore(&xhci->lock, flags); + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + return -ENOMEM; + } + + xhci_slot_copy(xhci, command->in_ctx, virt_dev->out_ctx); + spin_unlock_irqrestore(&xhci->lock, flags); + + ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG); + slot_ctx = xhci_get_slot_ctx(xhci, command->in_ctx); + slot_ctx->dev_info2 &= cpu_to_le32(~((u32) MAX_EXIT)); + slot_ctx->dev_info2 |= cpu_to_le32(max_exit_latency); + + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Set up evaluate context for LPM MEL change."); + xhci_dbg(xhci, "Slot %u Input Context:\n", udev->slot_id); + xhci_dbg_ctx(xhci, command->in_ctx, 0); + + /* Issue and wait for the evaluate context command. */ + ret = xhci_configure_endpoint(xhci, udev, command, + true, true); + xhci_dbg(xhci, "Slot %u Output Context:\n", udev->slot_id); + xhci_dbg_ctx(xhci, virt_dev->out_ctx, 0); + + if (!ret) { + spin_lock_irqsave(&xhci->lock, flags); + virt_dev->current_mel = max_exit_latency; + spin_unlock_irqrestore(&xhci->lock, flags); + } + return ret; +} + #ifdef CONFIG_PM_RUNTIME /* BESL to HIRD Encoding array for USB2 LPM */ @@ -3846,6 +4006,28 @@ static int xhci_calculate_hird_besl(struct xhci_hcd *xhci, return besl; } +/* Calculate BESLD, L1 timeout and HIRDM for USB2 PORTHLPMC */ +static int xhci_calculate_usb2_hw_lpm_params(struct usb_device *udev) +{ + u32 field; + int l1; + int besld = 0; + int hirdm = 0; + + field = le32_to_cpu(udev->bos->ext_cap->bmAttributes); + + /* xHCI l1 is set in steps of 256us, xHCI 1.0 section 5.4.11.2 */ + l1 = udev->l1_params.timeout / 256; + + /* device has preferred BESLD */ + if (field & USB_BESL_DEEP_VALID) { + besld = USB_GET_BESL_DEEP(field); + hirdm = 1; + } + + return PORT_BESLD(besld) | PORT_L1_TIMEOUT(l1) | PORT_HIRDM(hirdm); +} + static int xhci_usb2_software_lpm_test(struct usb_hcd *hcd, struct usb_device *udev) { @@ -3901,7 +4083,7 @@ static int xhci_usb2_software_lpm_test(struct usb_hcd *hcd, * Check device's USB 2.0 extension descriptor to determine whether * HIRD or BESL shoule be used. See USB2.0 LPM errata. */ - pm_addr = port_array[port_num] + 1; + pm_addr = port_array[port_num] + PORTPMSC; hird = xhci_calculate_hird_besl(xhci, udev); temp = PORT_L1DS(udev->slot_id) | PORT_HIRD(hird); xhci_writel(xhci, temp, pm_addr); @@ -3978,11 +4160,12 @@ int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd, { struct xhci_hcd *xhci = hcd_to_xhci(hcd); __le32 __iomem **port_array; - __le32 __iomem *pm_addr; - u32 temp; + __le32 __iomem *pm_addr, *hlpm_addr; + u32 pm_val, hlpm_val, field; unsigned int port_num; unsigned long flags; - int hird; + int hird, exit_latency; + int ret; if (hcd->speed == HCD_USB3 || !xhci->hw_lpm_support || !udev->lpm_capable) @@ -3999,40 +4182,120 @@ int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd, port_array = xhci->usb2_ports; port_num = udev->portnum - 1; - pm_addr = port_array[port_num] + 1; - temp = xhci_readl(xhci, pm_addr); + pm_addr = port_array[port_num] + PORTPMSC; + pm_val = xhci_readl(xhci, pm_addr); + hlpm_addr = port_array[port_num] + PORTHLPMC; + field = le32_to_cpu(udev->bos->ext_cap->bmAttributes); xhci_dbg(xhci, "%s port %d USB2 hardware LPM\n", enable ? "enable" : "disable", port_num); - hird = xhci_calculate_hird_besl(xhci, udev); - if (enable) { - temp &= ~PORT_HIRD_MASK; - temp |= PORT_HIRD(hird) | PORT_RWE; - xhci_writel(xhci, temp, pm_addr); - temp = xhci_readl(xhci, pm_addr); - temp |= PORT_HLE; - xhci_writel(xhci, temp, pm_addr); + /* Host supports BESL timeout instead of HIRD */ + if (udev->usb2_hw_lpm_besl_capable) { + /* if device doesn't have a preferred BESL value use a + * default one which works with mixed HIRD and BESL + * systems. See XHCI_DEFAULT_BESL definition in xhci.h + */ + if ((field & USB_BESL_SUPPORT) && + (field & USB_BESL_BASELINE_VALID)) + hird = USB_GET_BESL_BASELINE(field); + else + hird = udev->l1_params.besl; + + exit_latency = xhci_besl_encoding[hird]; + spin_unlock_irqrestore(&xhci->lock, flags); + + /* USB 3.0 code dedicate one xhci->lpm_command->in_ctx + * input context for link powermanagement evaluate + * context commands. It is protected by hcd->bandwidth + * mutex and is shared by all devices. We need to set + * the max ext latency in USB 2 BESL LPM as well, so + * use the same mutex and xhci_change_max_exit_latency() + */ + mutex_lock(hcd->bandwidth_mutex); + ret = xhci_change_max_exit_latency(xhci, udev, + exit_latency); + mutex_unlock(hcd->bandwidth_mutex); + + if (ret < 0) + return ret; + spin_lock_irqsave(&xhci->lock, flags); + + hlpm_val = xhci_calculate_usb2_hw_lpm_params(udev); + xhci_writel(xhci, hlpm_val, hlpm_addr); + /* flush write */ + xhci_readl(xhci, hlpm_addr); + } else { + hird = xhci_calculate_hird_besl(xhci, udev); + } + + pm_val &= ~PORT_HIRD_MASK; + pm_val |= PORT_HIRD(hird) | PORT_RWE; + xhci_writel(xhci, pm_val, pm_addr); + pm_val = xhci_readl(xhci, pm_addr); + pm_val |= PORT_HLE; + xhci_writel(xhci, pm_val, pm_addr); + /* flush write */ + xhci_readl(xhci, pm_addr); } else { - temp &= ~(PORT_HLE | PORT_RWE | PORT_HIRD_MASK); - xhci_writel(xhci, temp, pm_addr); + pm_val &= ~(PORT_HLE | PORT_RWE | PORT_HIRD_MASK); + xhci_writel(xhci, pm_val, pm_addr); + /* flush write */ + xhci_readl(xhci, pm_addr); + if (udev->usb2_hw_lpm_besl_capable) { + spin_unlock_irqrestore(&xhci->lock, flags); + mutex_lock(hcd->bandwidth_mutex); + xhci_change_max_exit_latency(xhci, udev, 0); + mutex_unlock(hcd->bandwidth_mutex); + return 0; + } } spin_unlock_irqrestore(&xhci->lock, flags); return 0; } +/* check if a usb2 port supports a given extened capability protocol + * only USB2 ports extended protocol capability values are cached. + * Return 1 if capability is supported + */ +static int xhci_check_usb2_port_capability(struct xhci_hcd *xhci, int port, + unsigned capability) +{ + u32 port_offset, port_count; + int i; + + for (i = 0; i < xhci->num_ext_caps; i++) { + if (xhci->ext_caps[i] & capability) { + /* port offsets starts at 1 */ + port_offset = XHCI_EXT_PORT_OFF(xhci->ext_caps[i]) - 1; + port_count = XHCI_EXT_PORT_COUNT(xhci->ext_caps[i]); + if (port >= port_offset && + port < port_offset + port_count) + return 1; + } + } + return 0; +} + int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); int ret; + int portnum = udev->portnum - 1; ret = xhci_usb2_software_lpm_test(hcd, udev); if (!ret) { xhci_dbg(xhci, "software LPM test succeed\n"); - if (xhci->hw_lpm_support == 1) { + if (xhci->hw_lpm_support == 1 && + xhci_check_usb2_port_capability(xhci, portnum, XHCI_HLC)) { udev->usb2_hw_lpm_capable = 1; + udev->l1_params.timeout = XHCI_L1_TIMEOUT; + udev->l1_params.besl = XHCI_DEFAULT_BESL; + if (xhci_check_usb2_port_capability(xhci, portnum, + XHCI_BLC)) + udev->usb2_hw_lpm_besl_capable = 1; ret = xhci_set_usb2_hardware_lpm(hcd, udev, 1); if (!ret) udev->usb2_hw_lpm_enabled = 1; @@ -4104,7 +4367,7 @@ static u16 xhci_get_timeout_no_hub_lpm(struct usb_device *udev, state_name, sel); else dev_dbg(&udev->dev, "Device-initiated %s disabled " - "due to long PEL %llu\n ms", + "due to long PEL %llu ms\n", state_name, pel); return USB3_LPM_DISABLED; } @@ -4363,56 +4626,6 @@ static u16 xhci_calculate_lpm_timeout(struct usb_hcd *hcd, return timeout; } -/* - * Issue an Evaluate Context command to change the Maximum Exit Latency in the - * slot context. If that succeeds, store the new MEL in the xhci_virt_device. - */ -static int xhci_change_max_exit_latency(struct xhci_hcd *xhci, - struct usb_device *udev, u16 max_exit_latency) -{ - struct xhci_virt_device *virt_dev; - struct xhci_command *command; - struct xhci_input_control_ctx *ctrl_ctx; - struct xhci_slot_ctx *slot_ctx; - unsigned long flags; - int ret; - - spin_lock_irqsave(&xhci->lock, flags); - if (max_exit_latency == xhci->devs[udev->slot_id]->current_mel) { - spin_unlock_irqrestore(&xhci->lock, flags); - return 0; - } - - /* Attempt to issue an Evaluate Context command to change the MEL. */ - virt_dev = xhci->devs[udev->slot_id]; - command = xhci->lpm_command; - xhci_slot_copy(xhci, command->in_ctx, virt_dev->out_ctx); - spin_unlock_irqrestore(&xhci->lock, flags); - - ctrl_ctx = xhci_get_input_control_ctx(xhci, command->in_ctx); - ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG); - slot_ctx = xhci_get_slot_ctx(xhci, command->in_ctx); - slot_ctx->dev_info2 &= cpu_to_le32(~((u32) MAX_EXIT)); - slot_ctx->dev_info2 |= cpu_to_le32(max_exit_latency); - - xhci_dbg(xhci, "Set up evaluate context for LPM MEL change.\n"); - xhci_dbg(xhci, "Slot %u Input Context:\n", udev->slot_id); - xhci_dbg_ctx(xhci, command->in_ctx, 0); - - /* Issue and wait for the evaluate context command. */ - ret = xhci_configure_endpoint(xhci, udev, command, - true, true); - xhci_dbg(xhci, "Slot %u Output Context:\n", udev->slot_id); - xhci_dbg_ctx(xhci, virt_dev->out_ctx, 0); - - if (!ret) { - spin_lock_irqsave(&xhci->lock, flags); - virt_dev->current_mel = max_exit_latency; - spin_unlock_irqrestore(&xhci->lock, flags); - } - return ret; -} - static int calculate_max_exit_latency(struct usb_device *udev, enum usb3_link_state state_changed, u16 hub_encoded_timeout) @@ -4554,6 +4767,13 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, xhci_dbg(xhci, "Could not allocate xHCI command structure.\n"); return -ENOMEM; } + ctrl_ctx = xhci_get_input_control_ctx(xhci, config_cmd->in_ctx); + if (!ctrl_ctx) { + xhci_warn(xhci, "%s: Could not get input context, bad type.\n", + __func__); + xhci_free_command(xhci, config_cmd); + return -ENOMEM; + } spin_lock_irqsave(&xhci->lock, flags); if (hdev->speed == USB_SPEED_HIGH && @@ -4565,7 +4785,6 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, } xhci_slot_copy(xhci, config_cmd->in_ctx, vdev->out_ctx); - ctrl_ctx = xhci_get_input_control_ctx(xhci, config_cmd->in_ctx); ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG); slot_ctx = xhci_get_slot_ctx(xhci, config_cmd->in_ctx); slot_ctx->dev_info |= cpu_to_le32(DEV_HUB); @@ -4632,10 +4851,13 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) struct xhci_hcd *xhci; struct device *dev = hcd->self.controller; int retval; - u32 temp; /* Accept arbitrarily long scatter-gather lists */ hcd->self.sg_tablesize = ~0; + + /* support to build packet from discontinuous buffers */ + hcd->self.no_sg_constraint = 1; + /* XHCI controllers don't stop the ep queue on short packets :| */ hcd->self.no_stop_on_short = 1; @@ -4660,14 +4882,6 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) /* xHCI private pointer was set in xhci_pci_probe for the second * registered roothub. */ - xhci = hcd_to_xhci(hcd); - temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params); - if (HCC_64BIT_ADDR(temp)) { - xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n"); - dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64)); - } else { - dma_set_mask(hcd->self.controller, DMA_BIT_MASK(32)); - } return 0; } @@ -4687,6 +4901,13 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) get_quirks(dev, xhci); + /* In xhci controllers which follow xhci 1.0 spec gives a spurious + * success event after a short transfer. This quirk will ignore such + * spurious event. + */ + if (xhci->hci_version > 0x96) + xhci->quirks |= XHCI_SPURIOUS_SUCCESS; + /* Make sure the HC is halted. */ retval = xhci_halt(xhci); if (retval) @@ -4699,12 +4920,12 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) goto error; xhci_dbg(xhci, "Reset complete\n"); - temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params); - if (HCC_64BIT_ADDR(temp)) { + /* Set dma_mask and coherent_dma_mask to 64-bits, + * if xHC supports 64-bit addressing */ + if (HCC_64BIT_ADDR(xhci->hcc_params) && + !dma_set_mask(dev, DMA_BIT_MASK(64))) { xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n"); - dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64)); - } else { - dma_set_mask(hcd->self.controller, DMA_BIT_MASK(32)); + dma_set_coherent_mask(dev, DMA_BIT_MASK(64)); } xhci_dbg(xhci, "Calling HCD init\n"); @@ -4729,12 +4950,12 @@ static int __init xhci_hcd_init(void) retval = xhci_register_pci(); if (retval < 0) { - printk(KERN_DEBUG "Problem registering PCI driver."); + pr_debug("Problem registering PCI driver.\n"); return retval; } retval = xhci_register_plat(); if (retval < 0) { - printk(KERN_DEBUG "Problem registering platform driver."); + pr_debug("Problem registering platform driver.\n"); goto unreg_pci; } /* diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 29c978e37135..46aa14894148 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -132,6 +132,11 @@ struct xhci_cap_regs { /* Number of registers per port */ #define NUM_PORT_REGS 4 +#define PORTSC 0 +#define PORTPMSC 1 +#define PORTLI 2 +#define PORTHLPMC 3 + /** * struct xhci_op_regs - xHCI Host Controller Operational Registers. * @command: USBCMD - xHC command register @@ -381,6 +386,27 @@ struct xhci_op_regs { #define PORT_L1DS(p) (((p) & 0xff) << 8) #define PORT_HLE (1 << 16) + +/* USB2 Protocol PORTHLPMC */ +#define PORT_HIRDM(p)((p) & 3) +#define PORT_L1_TIMEOUT(p)(((p) & 0xff) << 2) +#define PORT_BESLD(p)(((p) & 0xf) << 10) + +/* use 512 microseconds as USB2 LPM L1 default timeout. */ +#define XHCI_L1_TIMEOUT 512 + +/* Set default HIRD/BESL value to 4 (350/400us) for USB2 L1 LPM resume latency. + * Safe to use with mixed HIRD and BESL systems (host and device) and is used + * by other operating systems. + * + * XHCI 1.0 errata 8/14/12 Table 13 notes: + * "Software should choose xHC BESL/BESLD field values that do not violate a + * device's resume latency requirements, + * e.g. not program values > '4' if BLC = '1' and a HIRD device is attached, + * or not program values < '4' if BLC = '0' and a BESL device is attached. + */ +#define XHCI_DEFAULT_BESL 4 + /** * struct xhci_intr_reg - Interrupt Register Set * @irq_pending: IMAN - Interrupt Management Register. Used to enable @@ -1464,11 +1490,6 @@ struct xhci_hcd { struct dma_pool *small_streams_pool; struct dma_pool *medium_streams_pool; -#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING - /* Poll the rings - for debugging */ - struct timer_list event_ring_timer; - int zombie; -#endif /* Host controller watchdog timer structures */ unsigned int xhc_state; @@ -1516,6 +1537,7 @@ struct xhci_hcd { #define XHCI_SPURIOUS_REBOOT (1 << 13) #define XHCI_COMP_MODE_QUIRK (1 << 14) #define XHCI_AVOID_BEI (1 << 15) +#define XHCI_PLAT (1 << 16) unsigned int num_active_eps; unsigned int limit_active_eps; /* There are two roothubs to keep track of bus suspend info for */ @@ -1532,6 +1554,9 @@ struct xhci_hcd { unsigned sw_lpm_support:1; /* support xHCI 1.0 spec USB2 hardware LPM */ unsigned hw_lpm_support:1; + /* cached usb2 extened protocol capabilites */ + u32 *ext_caps; + unsigned int num_ext_caps; /* Compliance Mode Recovery Data */ struct timer_list comp_mode_recovery_timer; u32 port_status_u0; @@ -1550,16 +1575,8 @@ static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci) return xhci->main_hcd; } -#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING -#define XHCI_DEBUG 1 -#else -#define XHCI_DEBUG 0 -#endif - #define xhci_dbg(xhci, fmt, args...) \ - do { if (XHCI_DEBUG) dev_dbg(xhci_to_hcd(xhci)->self.controller , fmt , ## args); } while (0) -#define xhci_info(xhci, fmt, args...) \ - do { if (XHCI_DEBUG) dev_info(xhci_to_hcd(xhci)->self.controller , fmt , ## args); } while (0) + dev_dbg(xhci_to_hcd(xhci)->self.controller , fmt , ## args) #define xhci_err(xhci, fmt, args...) \ dev_err(xhci_to_hcd(xhci)->self.controller , fmt , ## args) #define xhci_warn(xhci, fmt, args...) \ @@ -1631,6 +1648,8 @@ char *xhci_get_slot_state(struct xhci_hcd *xhci, void xhci_dbg_ep_rings(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, struct xhci_virt_ep *ep); +void xhci_dbg_trace(struct xhci_hcd *xhci, void (*trace)(struct va_format *), + const char *fmt, ...); /* xHCI memory management */ void xhci_mem_cleanup(struct xhci_hcd *xhci); @@ -1641,6 +1660,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci, struct usb_device *udev); unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc); +unsigned int xhci_get_endpoint_address(unsigned int ep_index); unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc); unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index); unsigned int xhci_last_valid_endpoint(u32 added_ctxs); @@ -1745,7 +1765,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated); int xhci_get_frame(struct usb_hcd *hcd); irqreturn_t xhci_irq(struct usb_hcd *hcd); -irqreturn_t xhci_msi_irq(int irq, struct usb_hcd *hcd); +irqreturn_t xhci_msi_irq(int irq, void *hcd); int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev); void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev); int xhci_alloc_tt_info(struct xhci_hcd *xhci, @@ -1853,4 +1873,7 @@ struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci, struct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int ep_index); +/* xHCI quirks */ +bool xhci_compliance_mode_recovery_timer_quirk_check(void); + #endif /* __LINUX_XHCI_HCD_H */ diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig index a51e7d6afda9..e2b21c1d9c40 100644 --- a/drivers/usb/misc/Kconfig +++ b/drivers/usb/misc/Kconfig @@ -200,6 +200,19 @@ config USB_TEST See <http://www.linux-usb.org/usbtest/> for more information, including sample test device firmware and "how to use it". +config USB_EHSET_TEST_FIXTURE + tristate "USB EHSET Test Fixture driver" + help + Say Y here if you want to support the special test fixture device + used for the USB-IF Embedded Host High-Speed Electrical Test procedure. + + When the test fixture is connected, it can enumerate as one of several + VID/PID pairs. This driver then initiates a corresponding test mode on + the downstream port to which the test fixture is attached. + + See <http://www.usb.org/developers/onthego/EHSET_v1.01.pdf> for more + information. + config USB_ISIGHTFW tristate "iSight firmware loading support" select FW_LOADER @@ -233,5 +246,6 @@ config USB_EZUSB_FX2 config USB_HSIC_USB3503 tristate "USB3503 HSIC to USB20 Driver" depends on I2C + select REGMAP help This option enables support for SMSC USB3503 HSIC to USB 2.0 Driver. diff --git a/drivers/usb/misc/Makefile b/drivers/usb/misc/Makefile index 3e1bd70b06ea..e748fd5dbe94 100644 --- a/drivers/usb/misc/Makefile +++ b/drivers/usb/misc/Makefile @@ -2,9 +2,6 @@ # Makefile for the rest of the USB drivers # (the ones that don't fit into any other categories) # - -ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG - obj-$(CONFIG_USB_ADUTUX) += adutux.o obj-$(CONFIG_USB_APPLEDISPLAY) += appledisplay.o obj-$(CONFIG_USB_CYPRESS_CY7C63) += cypress_cy7c63.o @@ -22,6 +19,7 @@ obj-$(CONFIG_USB_LED) += usbled.o obj-$(CONFIG_USB_LEGOTOWER) += legousbtower.o obj-$(CONFIG_USB_RIO500) += rio500.o obj-$(CONFIG_USB_TEST) += usbtest.o +obj-$(CONFIG_USB_EHSET_TEST_FIXTURE) += ehset.o obj-$(CONFIG_USB_TRANCEVIBRATOR) += trancevibrator.o obj-$(CONFIG_USB_USS720) += uss720.o obj-$(CONFIG_USB_SEVSEG) += usbsevseg.o diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c index 284b85461410..3eaa83f05086 100644 --- a/drivers/usb/misc/adutux.c +++ b/drivers/usb/misc/adutux.c @@ -18,6 +18,8 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/kernel.h> #include <linux/errno.h> #include <linux/init.h> @@ -25,32 +27,13 @@ #include <linux/module.h> #include <linux/usb.h> #include <linux/mutex.h> -#include <asm/uaccess.h> - -#ifdef CONFIG_USB_DEBUG -static int debug = 5; -#else -static int debug = 1; -#endif - -/* Use our own dbg macro */ -#undef dbg -#define dbg(lvl, format, arg...) \ -do { \ - if (debug >= lvl) \ - printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg); \ -} while (0) - +#include <linux/uaccess.h> /* Version Information */ #define DRIVER_VERSION "v0.0.13" #define DRIVER_AUTHOR "John Homppi" #define DRIVER_DESC "adutux (see www.ontrak.net)" -/* Module parameters */ -module_param(debug, int, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug enabled or not"); - /* Define these values to match your device */ #define ADU_VENDOR_ID 0x0a07 #define ADU_PRODUCT_ID 0x0064 @@ -58,12 +41,12 @@ MODULE_PARM_DESC(debug, "Debug enabled or not"); /* table of devices that work with this driver */ static const struct usb_device_id device_table[] = { { USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID) }, /* ADU100 */ - { USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID+20) }, /* ADU120 */ - { USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID+30) }, /* ADU130 */ + { USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID+20) }, /* ADU120 */ + { USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID+30) }, /* ADU130 */ { USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID+100) }, /* ADU200 */ { USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID+108) }, /* ADU208 */ { USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID+118) }, /* ADU218 */ - { }/* Terminating entry */ + { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, device_table); @@ -92,16 +75,16 @@ MODULE_DEVICE_TABLE(usb, device_table); /* Structure to hold all of our device specific stuff */ struct adu_device { struct mutex mtx; - struct usb_device* udev; /* save off the usb device pointer */ - struct usb_interface* interface; + struct usb_device *udev; /* save off the usb device pointer */ + struct usb_interface *interface; unsigned int minor; /* the starting minor number for this device */ char serial_number[8]; int open_count; /* number of times this port has been opened */ - char* read_buffer_primary; + char *read_buffer_primary; int read_buffer_length; - char* read_buffer_secondary; + char *read_buffer_secondary; int secondary_head; int secondary_tail; spinlock_t buflock; @@ -109,14 +92,14 @@ struct adu_device { wait_queue_head_t read_wait; wait_queue_head_t write_wait; - char* interrupt_in_buffer; - struct usb_endpoint_descriptor* interrupt_in_endpoint; - struct urb* interrupt_in_urb; + char *interrupt_in_buffer; + struct usb_endpoint_descriptor *interrupt_in_endpoint; + struct urb *interrupt_in_urb; int read_urb_finished; - char* interrupt_out_buffer; - struct usb_endpoint_descriptor* interrupt_out_endpoint; - struct urb* interrupt_out_urb; + char *interrupt_out_buffer; + struct usb_endpoint_descriptor *interrupt_out_endpoint; + struct urb *interrupt_out_urb; int out_urb_finished; }; @@ -124,19 +107,11 @@ static DEFINE_MUTEX(adutux_mutex); static struct usb_driver adu_driver; -static void adu_debug_data(int level, const char *function, int size, - const unsigned char *data) +static inline void adu_debug_data(struct device *dev, const char *function, + int size, const unsigned char *data) { - int i; - - if (debug < level) - return; - - printk(KERN_DEBUG "%s: %s - length = %d, data = ", - __FILE__, function, size); - for (i = 0; i < size; ++i) - printk("%.2x ", data[i]); - printk("\n"); + dev_dbg(dev, "%s - length = %d, data = %*ph\n", + function, size, size, data); } /** @@ -147,12 +122,8 @@ static void adu_abort_transfers(struct adu_device *dev) { unsigned long flags; - dbg(2," %s : enter", __func__); - - if (dev->udev == NULL) { - dbg(1," %s : udev is null", __func__); - goto exit; - } + if (dev->udev == NULL) + return; /* shutdown transfer */ @@ -170,15 +141,10 @@ static void adu_abort_transfers(struct adu_device *dev) usb_kill_urb(dev->interrupt_out_urb); } else spin_unlock_irqrestore(&dev->buflock, flags); - -exit: - dbg(2," %s : leave", __func__); } static void adu_delete(struct adu_device *dev) { - dbg(2, "%s enter", __func__); - /* free data structures */ usb_free_urb(dev->interrupt_in_urb); usb_free_urb(dev->interrupt_out_urb); @@ -187,8 +153,6 @@ static void adu_delete(struct adu_device *dev) kfree(dev->interrupt_in_buffer); kfree(dev->interrupt_out_buffer); kfree(dev); - - dbg(2, "%s : leave", __func__); } static void adu_interrupt_in_callback(struct urb *urb) @@ -196,17 +160,17 @@ static void adu_interrupt_in_callback(struct urb *urb) struct adu_device *dev = urb->context; int status = urb->status; - dbg(4," %s : enter, status %d", __func__, status); - adu_debug_data(5, __func__, urb->actual_length, - urb->transfer_buffer); + adu_debug_data(&dev->udev->dev, __func__, + urb->actual_length, urb->transfer_buffer); spin_lock(&dev->buflock); if (status != 0) { if ((status != -ENOENT) && (status != -ECONNRESET) && (status != -ESHUTDOWN)) { - dbg(1," %s : nonzero status received: %d", - __func__, status); + dev_dbg(&dev->udev->dev, + "%s : nonzero status received: %d\n", + __func__, status); } goto exit; } @@ -220,10 +184,11 @@ static void adu_interrupt_in_callback(struct urb *urb) dev->interrupt_in_buffer, urb->actual_length); dev->read_buffer_length += urb->actual_length; - dbg(2," %s reading %d ", __func__, - urb->actual_length); + dev_dbg(&dev->udev->dev,"%s reading %d\n", __func__, + urb->actual_length); } else { - dbg(1," %s : read_buffer overflow", __func__); + dev_dbg(&dev->udev->dev,"%s : read_buffer overflow\n", + __func__); } } @@ -232,9 +197,6 @@ exit: spin_unlock(&dev->buflock); /* always wake up so we recover from errors */ wake_up_interruptible(&dev->read_wait); - adu_debug_data(5, __func__, urb->actual_length, - urb->transfer_buffer); - dbg(4," %s : leave, status %d", __func__, status); } static void adu_interrupt_out_callback(struct urb *urb) @@ -242,27 +204,23 @@ static void adu_interrupt_out_callback(struct urb *urb) struct adu_device *dev = urb->context; int status = urb->status; - dbg(4," %s : enter, status %d", __func__, status); - adu_debug_data(5,__func__, urb->actual_length, urb->transfer_buffer); + adu_debug_data(&dev->udev->dev, __func__, + urb->actual_length, urb->transfer_buffer); if (status != 0) { if ((status != -ENOENT) && (status != -ECONNRESET)) { - dbg(1, " %s :nonzero status received: %d", - __func__, status); + dev_dbg(&dev->udev->dev, + "%s :nonzero status received: %d\n", __func__, + status); } - goto exit; + return; } spin_lock(&dev->buflock); dev->out_urb_finished = 1; wake_up(&dev->write_wait); spin_unlock(&dev->buflock); -exit: - - adu_debug_data(5, __func__, urb->actual_length, - urb->transfer_buffer); - dbg(4," %s : leave, status %d", __func__, status); } static int adu_open(struct inode *inode, struct file *file) @@ -272,19 +230,16 @@ static int adu_open(struct inode *inode, struct file *file) int subminor; int retval; - dbg(2,"%s : enter", __func__); - subminor = iminor(inode); - if ((retval = mutex_lock_interruptible(&adutux_mutex))) { - dbg(2, "%s : mutex lock failed", __func__); + retval = mutex_lock_interruptible(&adutux_mutex); + if (retval) goto exit_no_lock; - } interface = usb_find_interface(&adu_driver, subminor); if (!interface) { - printk(KERN_ERR "adutux: %s - error, can't find device for " - "minor %d\n", __func__, subminor); + pr_err("%s - error, can't find device for minor %d\n", + __func__, subminor); retval = -ENODEV; goto exit_no_device; } @@ -302,7 +257,8 @@ static int adu_open(struct inode *inode, struct file *file) } ++dev->open_count; - dbg(2,"%s : open count %d", __func__, dev->open_count); + dev_dbg(&dev->udev->dev, "%s: open count %d\n", __func__, + dev->open_count); /* save device in the file's private structure */ file->private_data = dev; @@ -311,7 +267,7 @@ static int adu_open(struct inode *inode, struct file *file) dev->read_buffer_length = 0; /* fixup first read by having urb waiting for it */ - usb_fill_int_urb(dev->interrupt_in_urb,dev->udev, + usb_fill_int_urb(dev->interrupt_in_urb, dev->udev, usb_rcvintpipe(dev->udev, dev->interrupt_in_endpoint->bEndpointAddress), dev->interrupt_in_buffer, @@ -332,23 +288,19 @@ static int adu_open(struct inode *inode, struct file *file) exit_no_device: mutex_unlock(&adutux_mutex); exit_no_lock: - dbg(2,"%s : leave, return value %d ", __func__, retval); return retval; } static void adu_release_internal(struct adu_device *dev) { - dbg(2," %s : enter", __func__); - /* decrement our usage count for the device */ --dev->open_count; - dbg(2," %s : open count %d", __func__, dev->open_count); + dev_dbg(&dev->udev->dev, "%s : open count %d\n", __func__, + dev->open_count); if (dev->open_count <= 0) { adu_abort_transfers(dev); dev->open_count = 0; } - - dbg(2," %s : leave", __func__); } static int adu_release(struct inode *inode, struct file *file) @@ -356,17 +308,13 @@ static int adu_release(struct inode *inode, struct file *file) struct adu_device *dev; int retval = 0; - dbg(2," %s : enter", __func__); - if (file == NULL) { - dbg(1," %s : file is NULL", __func__); retval = -ENODEV; goto exit; } dev = file->private_data; if (dev == NULL) { - dbg(1," %s : object is NULL", __func__); retval = -ENODEV; goto exit; } @@ -374,7 +322,7 @@ static int adu_release(struct inode *inode, struct file *file) mutex_lock(&adutux_mutex); /* not interruptible */ if (dev->open_count <= 0) { - dbg(1," %s : device not opened", __func__); + dev_dbg(&dev->udev->dev, "%s : device not opened\n", __func__); retval = -ENODEV; goto unlock; } @@ -388,7 +336,6 @@ static int adu_release(struct inode *inode, struct file *file) unlock: mutex_unlock(&adutux_mutex); exit: - dbg(2," %s : leave, return value %d", __func__, retval); return retval; } @@ -405,35 +352,32 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count, unsigned long flags; DECLARE_WAITQUEUE(wait, current); - dbg(2," %s : enter, count = %Zd, file=%p", __func__, count, file); - dev = file->private_data; - dbg(2," %s : dev=%p", __func__, dev); - if (mutex_lock_interruptible(&dev->mtx)) return -ERESTARTSYS; /* verify that the device wasn't unplugged */ if (dev->udev == NULL) { retval = -ENODEV; - printk(KERN_ERR "adutux: No device or device unplugged %d\n", - retval); + pr_err("No device or device unplugged %d\n", retval); goto exit; } /* verify that some data was requested */ if (count == 0) { - dbg(1," %s : read request of 0 bytes", __func__); + dev_dbg(&dev->udev->dev, "%s : read request of 0 bytes\n", + __func__); goto exit; } timeout = COMMAND_TIMEOUT; - dbg(2," %s : about to start looping", __func__); + dev_dbg(&dev->udev->dev, "%s : about to start looping\n", __func__); while (bytes_to_read) { int data_in_secondary = dev->secondary_tail - dev->secondary_head; - dbg(2," %s : while, data_in_secondary=%d, status=%d", - __func__, data_in_secondary, - dev->interrupt_in_urb->status); + dev_dbg(&dev->udev->dev, + "%s : while, data_in_secondary=%d, status=%d\n", + __func__, data_in_secondary, + dev->interrupt_in_urb->status); if (data_in_secondary) { /* drain secondary buffer */ @@ -456,8 +400,9 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count, if (dev->read_buffer_length) { /* we secure access to the primary */ char *tmp; - dbg(2," %s : swap, read_buffer_length = %d", - __func__, dev->read_buffer_length); + dev_dbg(&dev->udev->dev, + "%s : swap, read_buffer_length = %d\n", + __func__, dev->read_buffer_length); tmp = dev->read_buffer_secondary; dev->read_buffer_secondary = dev->read_buffer_primary; dev->read_buffer_primary = tmp; @@ -472,16 +417,20 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count, if (!dev->read_urb_finished) { /* somebody is doing IO */ spin_unlock_irqrestore(&dev->buflock, flags); - dbg(2," %s : submitted already", __func__); + dev_dbg(&dev->udev->dev, + "%s : submitted already\n", + __func__); } else { /* we must initiate input */ - dbg(2," %s : initiate input", __func__); + dev_dbg(&dev->udev->dev, + "%s : initiate input\n", + __func__); dev->read_urb_finished = 0; spin_unlock_irqrestore(&dev->buflock, flags); - usb_fill_int_urb(dev->interrupt_in_urb,dev->udev, - usb_rcvintpipe(dev->udev, - dev->interrupt_in_endpoint->bEndpointAddress), + usb_fill_int_urb(dev->interrupt_in_urb, dev->udev, + usb_rcvintpipe(dev->udev, + dev->interrupt_in_endpoint->bEndpointAddress), dev->interrupt_in_buffer, usb_endpoint_maxp(dev->interrupt_in_endpoint), adu_interrupt_in_callback, @@ -493,7 +442,9 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count, if (retval == -ENOMEM) { retval = bytes_read ? bytes_read : -ENOMEM; } - dbg(2," %s : submit failed", __func__); + dev_dbg(&dev->udev->dev, + "%s : submit failed\n", + __func__); goto exit; } } @@ -512,13 +463,16 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count, remove_wait_queue(&dev->read_wait, &wait); if (timeout <= 0) { - dbg(2," %s : timeout", __func__); + dev_dbg(&dev->udev->dev, + "%s : timeout\n", __func__); retval = bytes_read ? bytes_read : -ETIMEDOUT; goto exit; } if (signal_pending(current)) { - dbg(2," %s : signal pending", __func__); + dev_dbg(&dev->udev->dev, + "%s : signal pending\n", + __func__); retval = bytes_read ? bytes_read : -EINTR; goto exit; } @@ -532,9 +486,9 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count, if (should_submit && dev->read_urb_finished) { dev->read_urb_finished = 0; spin_unlock_irqrestore(&dev->buflock, flags); - usb_fill_int_urb(dev->interrupt_in_urb,dev->udev, + usb_fill_int_urb(dev->interrupt_in_urb, dev->udev, usb_rcvintpipe(dev->udev, - dev->interrupt_in_endpoint->bEndpointAddress), + dev->interrupt_in_endpoint->bEndpointAddress), dev->interrupt_in_buffer, usb_endpoint_maxp(dev->interrupt_in_endpoint), adu_interrupt_in_callback, @@ -551,7 +505,6 @@ exit: /* unlock the device */ mutex_unlock(&dev->mtx); - dbg(2," %s : leave, return value %d", __func__, retval); return retval; } @@ -566,8 +519,6 @@ static ssize_t adu_write(struct file *file, const __user char *buffer, unsigned long flags; int retval; - dbg(2," %s : enter, count = %Zd", __func__, count); - dev = file->private_data; retval = mutex_lock_interruptible(&dev->mtx); @@ -577,14 +528,14 @@ static ssize_t adu_write(struct file *file, const __user char *buffer, /* verify that the device wasn't unplugged */ if (dev->udev == NULL) { retval = -ENODEV; - printk(KERN_ERR "adutux: No device or device unplugged %d\n", - retval); + pr_err("No device or device unplugged %d\n", retval); goto exit; } /* verify that we actually have some data to write */ if (count == 0) { - dbg(1," %s : write request of 0 bytes", __func__); + dev_dbg(&dev->udev->dev, "%s : write request of 0 bytes\n", + __func__); goto exit; } @@ -597,13 +548,15 @@ static ssize_t adu_write(struct file *file, const __user char *buffer, mutex_unlock(&dev->mtx); if (signal_pending(current)) { - dbg(1," %s : interrupted", __func__); + dev_dbg(&dev->udev->dev, "%s : interrupted\n", + __func__); set_current_state(TASK_RUNNING); retval = -EINTR; goto exit_onqueue; } if (schedule_timeout(COMMAND_TIMEOUT) == 0) { - dbg(1, "%s - command timed out.", __func__); + dev_dbg(&dev->udev->dev, + "%s - command timed out.\n", __func__); retval = -ETIMEDOUT; goto exit_onqueue; } @@ -614,18 +567,22 @@ static ssize_t adu_write(struct file *file, const __user char *buffer, goto exit_nolock; } - dbg(4," %s : in progress, count = %Zd", __func__, count); + dev_dbg(&dev->udev->dev, + "%s : in progress, count = %Zd\n", + __func__, count); } else { spin_unlock_irqrestore(&dev->buflock, flags); set_current_state(TASK_RUNNING); remove_wait_queue(&dev->write_wait, &waita); - dbg(4," %s : sending, count = %Zd", __func__, count); + dev_dbg(&dev->udev->dev, "%s : sending, count = %Zd\n", + __func__, count); /* write the data into interrupt_out_buffer from userspace */ buffer_size = usb_endpoint_maxp(dev->interrupt_out_endpoint); bytes_to_write = count > buffer_size ? buffer_size : count; - dbg(4," %s : buffer_size = %Zd, count = %Zd, bytes_to_write = %Zd", - __func__, buffer_size, count, bytes_to_write); + dev_dbg(&dev->udev->dev, + "%s : buffer_size = %Zd, count = %Zd, bytes_to_write = %Zd\n", + __func__, buffer_size, count, bytes_to_write); if (copy_from_user(dev->interrupt_out_buffer, buffer, bytes_to_write) != 0) { retval = -EFAULT; @@ -664,7 +621,6 @@ static ssize_t adu_write(struct file *file, const __user char *buffer, exit: mutex_unlock(&dev->mtx); exit_nolock: - dbg(2," %s : leave, return value %d", __func__, retval); return retval; exit_onqueue: @@ -710,8 +666,6 @@ static int adu_probe(struct usb_interface *interface, int out_end_size; int i; - dbg(2," %s : enter", __func__); - if (udev == NULL) { dev_err(&interface->dev, "udev is NULL.\n"); goto exit; @@ -811,7 +765,7 @@ static int adu_probe(struct usb_interface *interface, dev_err(&interface->dev, "Could not retrieve serial number\n"); goto error; } - dbg(2," %s : serial_number=%s", __func__, dev->serial_number); + dev_dbg(&interface->dev,"serial_number=%s", dev->serial_number); /* we can register the device now, as it is ready */ usb_set_intfdata(interface, dev); @@ -829,11 +783,9 @@ static int adu_probe(struct usb_interface *interface, /* let the user know what node this device is now attached to */ dev_info(&interface->dev, "ADU%d %s now attached to /dev/usb/adutux%d\n", - udev->descriptor.idProduct, dev->serial_number, + le16_to_cpu(udev->descriptor.idProduct), dev->serial_number, (dev->minor - ADU_MINOR_BASE)); exit: - dbg(2," %s : leave, return value %p (dev)", __func__, dev); - return retval; error: @@ -851,8 +803,6 @@ static void adu_disconnect(struct usb_interface *interface) struct adu_device *dev; int minor; - dbg(2," %s : enter", __func__); - dev = usb_get_intfdata(interface); mutex_lock(&dev->mtx); /* not interruptible */ @@ -865,7 +815,8 @@ static void adu_disconnect(struct usb_interface *interface) usb_set_intfdata(interface, NULL); /* if the device is not opened, then we clean up right now */ - dbg(2," %s : open count %d", __func__, dev->open_count); + dev_dbg(&dev->udev->dev, "%s : open count %d\n", + __func__, dev->open_count); if (!dev->open_count) adu_delete(dev); @@ -873,8 +824,6 @@ static void adu_disconnect(struct usb_interface *interface) dev_info(&interface->dev, "ADU device adutux%d now disconnected\n", (minor - ADU_MINOR_BASE)); - - dbg(2," %s : leave", __func__); } /* usb specific object needed to register this driver with the usb subsystem */ diff --git a/drivers/usb/misc/ehset.c b/drivers/usb/misc/ehset.c new file mode 100644 index 000000000000..c31b4a33e6bb --- /dev/null +++ b/drivers/usb/misc/ehset.c @@ -0,0 +1,152 @@ +/* + * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/usb.h> +#include <linux/usb/ch11.h> + +#define TEST_SE0_NAK_PID 0x0101 +#define TEST_J_PID 0x0102 +#define TEST_K_PID 0x0103 +#define TEST_PACKET_PID 0x0104 +#define TEST_HS_HOST_PORT_SUSPEND_RESUME 0x0106 +#define TEST_SINGLE_STEP_GET_DEV_DESC 0x0107 +#define TEST_SINGLE_STEP_SET_FEATURE 0x0108 + +static int ehset_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + int ret = -EINVAL; + struct usb_device *dev = interface_to_usbdev(intf); + struct usb_device *hub_udev = dev->parent; + struct usb_device_descriptor *buf; + u8 portnum = dev->portnum; + u16 test_pid = le16_to_cpu(dev->descriptor.idProduct); + + switch (test_pid) { + case TEST_SE0_NAK_PID: + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (TEST_SE0_NAK << 8) | portnum, + NULL, 0, 1000); + break; + case TEST_J_PID: + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (TEST_J << 8) | portnum, + NULL, 0, 1000); + break; + case TEST_K_PID: + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (TEST_K << 8) | portnum, + NULL, 0, 1000); + break; + case TEST_PACKET_PID: + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (TEST_PACKET << 8) | portnum, + NULL, 0, 1000); + break; + case TEST_HS_HOST_PORT_SUSPEND_RESUME: + /* Test: wait for 15secs -> suspend -> 15secs delay -> resume */ + msleep(15 * 1000); + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_SUSPEND, portnum, + NULL, 0, 1000); + if (ret < 0) + break; + + msleep(15 * 1000); + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_CLEAR_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_SUSPEND, portnum, + NULL, 0, 1000); + break; + case TEST_SINGLE_STEP_GET_DEV_DESC: + /* Test: wait for 15secs -> GetDescriptor request */ + msleep(15 * 1000); + buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), + USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, + USB_DT_DEVICE << 8, 0, + buf, USB_DT_DEVICE_SIZE, + USB_CTRL_GET_TIMEOUT); + kfree(buf); + break; + case TEST_SINGLE_STEP_SET_FEATURE: + /* + * GetDescriptor SETUP request -> 15secs delay -> IN & STATUS + * + * Note, this test is only supported on root hubs since the + * SetPortFeature handling can only be done inside the HCD's + * hub_control callback function. + */ + if (hub_udev != dev->bus->root_hub) { + dev_err(&intf->dev, "SINGLE_STEP_SET_FEATURE test only supported on root hub\n"); + break; + } + + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (6 << 8) | portnum, + NULL, 0, 60 * 1000); + + break; + default: + dev_err(&intf->dev, "%s: unsupported PID: 0x%x\n", + __func__, test_pid); + } + + return (ret < 0) ? ret : 0; +} + +static void ehset_disconnect(struct usb_interface *intf) +{ +} + +static const struct usb_device_id ehset_id_table[] = { + { USB_DEVICE(0x1a0a, TEST_SE0_NAK_PID) }, + { USB_DEVICE(0x1a0a, TEST_J_PID) }, + { USB_DEVICE(0x1a0a, TEST_K_PID) }, + { USB_DEVICE(0x1a0a, TEST_PACKET_PID) }, + { USB_DEVICE(0x1a0a, TEST_HS_HOST_PORT_SUSPEND_RESUME) }, + { USB_DEVICE(0x1a0a, TEST_SINGLE_STEP_GET_DEV_DESC) }, + { USB_DEVICE(0x1a0a, TEST_SINGLE_STEP_SET_FEATURE) }, + { } /* Terminating entry */ +}; +MODULE_DEVICE_TABLE(usb, ehset_id_table); + +static struct usb_driver ehset_driver = { + .name = "usb_ehset_test", + .probe = ehset_probe, + .disconnect = ehset_disconnect, + .id_table = ehset_id_table, +}; + +module_usb_driver(ehset_driver); + +MODULE_DESCRIPTION("USB Driver for EHSET Test Fixture"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index ac762299eaa8..b1d59532ac22 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -129,19 +129,6 @@ MODULE_DESCRIPTION("LD USB Driver"); MODULE_LICENSE("GPL"); MODULE_SUPPORTED_DEVICE("LD USB Devices"); -#ifdef CONFIG_USB_DEBUG - static int debug = 1; -#else - static int debug = 0; -#endif - -/* Use our own dbg macro */ -#define dbg_info(dev, format, arg...) do { if (debug) dev_info(dev , format , ## arg); } while (0) - -/* Module parameters */ -module_param(debug, int, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug enabled or not"); - /* All interrupt in transfers are collected in a ring buffer to * avoid racing conditions and get better performance of the driver. */ @@ -256,8 +243,9 @@ static void ld_usb_interrupt_in_callback(struct urb *urb) status == -ESHUTDOWN) { goto exit; } else { - dbg_info(&dev->intf->dev, "%s: nonzero status received: %d\n", - __func__, status); + dev_dbg(&dev->intf->dev, + "%s: nonzero status received: %d\n", __func__, + status); spin_lock(&dev->rbsl); goto resubmit; /* maybe we can recover */ } @@ -272,8 +260,8 @@ static void ld_usb_interrupt_in_callback(struct urb *urb) *actual_buffer = urb->actual_length; memcpy(actual_buffer+1, dev->interrupt_in_buffer, urb->actual_length); dev->ring_head = next_ring_head; - dbg_info(&dev->intf->dev, "%s: received %d bytes\n", - __func__, urb->actual_length); + dev_dbg(&dev->intf->dev, "%s: received %d bytes\n", + __func__, urb->actual_length); } else { dev_warn(&dev->intf->dev, "Ring buffer overflow, %d bytes dropped\n", @@ -310,9 +298,9 @@ static void ld_usb_interrupt_out_callback(struct urb *urb) if (status && !(status == -ENOENT || status == -ECONNRESET || status == -ESHUTDOWN)) - dbg_info(&dev->intf->dev, - "%s - nonzero write interrupt status received: %d\n", - __func__, status); + dev_dbg(&dev->intf->dev, + "%s - nonzero write interrupt status received: %d\n", + __func__, status); dev->interrupt_out_busy = 0; wake_up_interruptible(&dev->write_wait); @@ -585,7 +573,8 @@ static ssize_t ld_usb_write(struct file *file, const char __user *buffer, bytes_to_write = min(count, write_buffer_size*dev->interrupt_out_endpoint_size); if (bytes_to_write < count) dev_warn(&dev->intf->dev, "Write buffer overflow, %zd bytes dropped\n",count-bytes_to_write); - dbg_info(&dev->intf->dev, "%s: count = %zd, bytes_to_write = %zd\n", __func__, count, bytes_to_write); + dev_dbg(&dev->intf->dev, "%s: count = %zd, bytes_to_write = %zd\n", + __func__, count, bytes_to_write); if (copy_from_user(dev->interrupt_out_buffer, buffer, bytes_to_write)) { retval = -EFAULT; diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index 80894791c020..eb37c9542052 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -75,6 +75,8 @@ * - move reset into open to clean out spurious data */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/kernel.h> #include <linux/errno.h> #include <linux/init.h> @@ -87,28 +89,11 @@ #include <linux/poll.h> -#ifdef CONFIG_USB_DEBUG - static int debug = 4; -#else - static int debug = 0; -#endif - -/* Use our own dbg macro */ -#undef dbg -#define dbg(lvl, format, arg...) \ -do { \ - if (debug >= lvl) \ - printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg); \ -} while (0) - /* Version Information */ #define DRIVER_VERSION "v0.96" #define DRIVER_AUTHOR "Juergen Stuber <starblue@sourceforge.net>" #define DRIVER_DESC "LEGO USB Tower Driver" -/* Module parameters */ -module_param(debug, int, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug enabled or not"); /* The defaults are chosen to work with the latest versions of leJOS and NQC. */ @@ -298,18 +283,12 @@ static struct usb_driver tower_driver = { /** * lego_usb_tower_debug_data */ -static inline void lego_usb_tower_debug_data (int level, const char *function, int size, const unsigned char *data) +static inline void lego_usb_tower_debug_data(struct device *dev, + const char *function, int size, + const unsigned char *data) { - int i; - - if (debug < level) - return; - - printk (KERN_DEBUG "%s: %s - length = %d, data = ", __FILE__, function, size); - for (i = 0; i < size; ++i) { - printk ("%.2x ", data[i]); - } - printk ("\n"); + dev_dbg(dev, "%s - length = %d, data = %*ph\n", + function, size, size, data); } @@ -318,8 +297,6 @@ static inline void lego_usb_tower_debug_data (int level, const char *function, i */ static inline void tower_delete (struct lego_usb_tower *dev) { - dbg(2, "%s: enter", __func__); - tower_abort_transfers (dev); /* free data structures */ @@ -329,8 +306,6 @@ static inline void tower_delete (struct lego_usb_tower *dev) kfree (dev->interrupt_in_buffer); kfree (dev->interrupt_out_buffer); kfree (dev); - - dbg(2, "%s: leave", __func__); } @@ -346,16 +321,13 @@ static int tower_open (struct inode *inode, struct file *file) struct tower_reset_reply reset_reply; int result; - dbg(2, "%s: enter", __func__); - nonseekable_open(inode, file); subminor = iminor(inode); interface = usb_find_interface (&tower_driver, subminor); if (!interface) { - printk(KERN_ERR "%s - error, can't find device for minor %d\n", - __func__, subminor); + pr_err("error, can't find device for minor %d\n", subminor); retval = -ENODEV; goto exit; } @@ -435,8 +407,6 @@ unlock_exit: mutex_unlock(&dev->lock); exit: - dbg(2, "%s: leave, return value %d ", __func__, retval); - return retval; } @@ -448,12 +418,9 @@ static int tower_release (struct inode *inode, struct file *file) struct lego_usb_tower *dev; int retval = 0; - dbg(2, "%s: enter", __func__); - dev = file->private_data; if (dev == NULL) { - dbg(1, "%s: object is NULL", __func__); retval = -ENODEV; goto exit_nolock; } @@ -465,7 +432,8 @@ static int tower_release (struct inode *inode, struct file *file) } if (dev->open_count != 1) { - dbg(1, "%s: device not opened exactly once", __func__); + dev_dbg(&dev->udev->dev, "%s: device not opened exactly once\n", + __func__); retval = -ENODEV; goto unlock_exit; } @@ -491,7 +459,6 @@ unlock_exit: exit: mutex_unlock(&open_disc_mutex); exit_nolock: - dbg(2, "%s: leave, return value %d", __func__, retval); return retval; } @@ -502,12 +469,8 @@ exit_nolock: */ static void tower_abort_transfers (struct lego_usb_tower *dev) { - dbg(2, "%s: enter", __func__); - - if (dev == NULL) { - dbg(1, "%s: dev is null", __func__); - goto exit; - } + if (dev == NULL) + return; /* shutdown transfer */ if (dev->interrupt_in_running) { @@ -518,9 +481,6 @@ static void tower_abort_transfers (struct lego_usb_tower *dev) } if (dev->interrupt_out_busy && dev->udev) usb_kill_urb(dev->interrupt_out_urb); - -exit: - dbg(2, "%s: leave", __func__); } @@ -553,8 +513,6 @@ static unsigned int tower_poll (struct file *file, poll_table *wait) struct lego_usb_tower *dev; unsigned int mask = 0; - dbg(2, "%s: enter", __func__); - dev = file->private_data; if (!dev->udev) @@ -571,8 +529,6 @@ static unsigned int tower_poll (struct file *file, poll_table *wait) mask |= POLLOUT | POLLWRNORM; } - dbg(2, "%s: leave, mask = %d", __func__, mask); - return mask; } @@ -597,8 +553,6 @@ static ssize_t tower_read (struct file *file, char __user *buffer, size_t count, int retval = 0; unsigned long timeout = 0; - dbg(2, "%s: enter, count = %Zd", __func__, count); - dev = file->private_data; /* lock this object */ @@ -610,13 +564,13 @@ static ssize_t tower_read (struct file *file, char __user *buffer, size_t count, /* verify that the device wasn't unplugged */ if (dev->udev == NULL) { retval = -ENODEV; - printk(KERN_ERR "legousbtower: No device or device unplugged %d\n", retval); + pr_err("No device or device unplugged %d\n", retval); goto unlock_exit; } /* verify that we actually have some data to read */ if (count == 0) { - dbg(1, "%s: read request of 0 bytes", __func__); + dev_dbg(&dev->udev->dev, "read request of 0 bytes\n"); goto unlock_exit; } @@ -672,7 +626,6 @@ unlock_exit: mutex_unlock(&dev->lock); exit: - dbg(2, "%s: leave, return value %d", __func__, retval); return retval; } @@ -686,8 +639,6 @@ static ssize_t tower_write (struct file *file, const char __user *buffer, size_t size_t bytes_to_write; int retval = 0; - dbg(2, "%s: enter, count = %Zd", __func__, count); - dev = file->private_data; /* lock this object */ @@ -699,13 +650,13 @@ static ssize_t tower_write (struct file *file, const char __user *buffer, size_t /* verify that the device wasn't unplugged */ if (dev->udev == NULL) { retval = -ENODEV; - printk(KERN_ERR "legousbtower: No device or device unplugged %d\n", retval); + pr_err("No device or device unplugged %d\n", retval); goto unlock_exit; } /* verify that we actually have some data to write */ if (count == 0) { - dbg(1, "%s: write request of 0 bytes", __func__); + dev_dbg(&dev->udev->dev, "write request of 0 bytes\n"); goto unlock_exit; } @@ -723,7 +674,8 @@ static ssize_t tower_write (struct file *file, const char __user *buffer, size_t /* write the data into interrupt_out_buffer from userspace */ bytes_to_write = min_t(int, count, write_buffer_size); - dbg(4, "%s: count = %Zd, bytes_to_write = %Zd", __func__, count, bytes_to_write); + dev_dbg(&dev->udev->dev, "%s: count = %Zd, bytes_to_write = %Zd\n", + __func__, count, bytes_to_write); if (copy_from_user (dev->interrupt_out_buffer, buffer, bytes_to_write)) { retval = -EFAULT; @@ -757,8 +709,6 @@ unlock_exit: mutex_unlock(&dev->lock); exit: - dbg(2, "%s: leave, return value %d", __func__, retval); - return retval; } @@ -772,9 +722,8 @@ static void tower_interrupt_in_callback (struct urb *urb) int status = urb->status; int retval; - dbg(4, "%s: enter, status %d", __func__, status); - - lego_usb_tower_debug_data(5, __func__, urb->actual_length, urb->transfer_buffer); + lego_usb_tower_debug_data(&dev->udev->dev, __func__, + urb->actual_length, urb->transfer_buffer); if (status) { if (status == -ENOENT || @@ -782,7 +731,9 @@ static void tower_interrupt_in_callback (struct urb *urb) status == -ESHUTDOWN) { goto exit; } else { - dbg(1, "%s: nonzero status received: %d", __func__, status); + dev_dbg(&dev->udev->dev, + "%s: nonzero status received: %d\n", __func__, + status); goto resubmit; /* maybe we can recover */ } } @@ -795,9 +746,11 @@ static void tower_interrupt_in_callback (struct urb *urb) urb->actual_length); dev->read_buffer_length += urb->actual_length; dev->read_last_arrival = jiffies; - dbg(3, "%s: received %d bytes", __func__, urb->actual_length); + dev_dbg(&dev->udev->dev, "%s: received %d bytes\n", + __func__, urb->actual_length); } else { - printk(KERN_WARNING "%s: read_buffer overflow, %d bytes dropped", __func__, urb->actual_length); + pr_warn("read_buffer overflow, %d bytes dropped\n", + urb->actual_length); } spin_unlock (&dev->read_buffer_lock); } @@ -815,9 +768,6 @@ resubmit: exit: dev->interrupt_in_done = 1; wake_up_interruptible (&dev->read_wait); - - lego_usb_tower_debug_data(5, __func__, urb->actual_length, urb->transfer_buffer); - dbg(4, "%s: leave, status %d", __func__, status); } @@ -829,22 +779,20 @@ static void tower_interrupt_out_callback (struct urb *urb) struct lego_usb_tower *dev = urb->context; int status = urb->status; - dbg(4, "%s: enter, status %d", __func__, status); - lego_usb_tower_debug_data(5, __func__, urb->actual_length, urb->transfer_buffer); + lego_usb_tower_debug_data(&dev->udev->dev, __func__, + urb->actual_length, urb->transfer_buffer); /* sync/async unlink faults aren't errors */ if (status && !(status == -ENOENT || status == -ECONNRESET || status == -ESHUTDOWN)) { - dbg(1, "%s - nonzero write bulk status received: %d", - __func__, status); + dev_dbg(&dev->udev->dev, + "%s: nonzero write bulk status received: %d\n", __func__, + status); } dev->interrupt_out_busy = 0; wake_up_interruptible(&dev->write_wait); - - lego_usb_tower_debug_data(5, __func__, urb->actual_length, urb->transfer_buffer); - dbg(4, "%s: leave, status %d", __func__, status); } @@ -866,8 +814,6 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device int retval = -ENOMEM; int result; - dbg(2, "%s: enter", __func__); - /* allocate memory for our device state and initialize it */ dev = kmalloc (sizeof(struct lego_usb_tower), GFP_KERNEL); @@ -993,8 +939,6 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device exit: - dbg(2, "%s: leave, return value 0x%.8lx (dev)", __func__, (long) dev); - return retval; error: @@ -1013,8 +957,6 @@ static void tower_disconnect (struct usb_interface *interface) struct lego_usb_tower *dev; int minor; - dbg(2, "%s: enter", __func__); - dev = usb_get_intfdata (interface); mutex_lock(&open_disc_mutex); usb_set_intfdata (interface, NULL); @@ -1041,8 +983,6 @@ static void tower_disconnect (struct usb_interface *interface) dev_info(&interface->dev, "LEGO USB Tower #%d now disconnected\n", (minor - LEGO_USB_TOWER_MINOR_BASE)); - - dbg(2, "%s: leave", __func__); } module_usb_driver(tower_driver); diff --git a/drivers/usb/misc/sisusbvga/Kconfig b/drivers/usb/misc/sisusbvga/Kconfig index 0d03a5200482..36bc28c884ad 100644 --- a/drivers/usb/misc/sisusbvga/Kconfig +++ b/drivers/usb/misc/sisusbvga/Kconfig @@ -2,6 +2,7 @@ config USB_SISUSBVGA tristate "USB 2.0 SVGA dongle support (Net2280/SiS315)" depends on (USB_MUSB_HDRC || USB_EHCI_HCD) + select FONT_SUPPORT if USB_SISUSBVGA_CON ---help--- Say Y here if you intend to attach a USB2VGA dongle based on a Net2280 and a SiS315 chip. diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index c21386ec5d35..de98906f786d 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -3247,6 +3247,7 @@ static const struct usb_device_id sisusb_table[] = { { USB_DEVICE(0x0711, 0x0903) }, { USB_DEVICE(0x0711, 0x0918) }, { USB_DEVICE(0x0711, 0x0920) }, + { USB_DEVICE(0x0711, 0x0950) }, { USB_DEVICE(0x182d, 0x021c) }, { USB_DEVICE(0x182d, 0x0269) }, { } diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c index 411e605f448a..a638c4e9a947 100644 --- a/drivers/usb/misc/sisusbvga/sisusb_con.c +++ b/drivers/usb/misc/sisusbvga/sisusb_con.c @@ -208,7 +208,7 @@ sisusbcon_init(struct vc_data *c, int init) struct sisusb_usb_data *sisusb; int cols, rows; - /* This is called by take_over_console(), + /* This is called by do_take_over_console(), * ie by us/under our control. It is * only called after text mode and fonts * are set up/restored. @@ -273,7 +273,7 @@ sisusbcon_deinit(struct vc_data *c) struct sisusb_usb_data *sisusb; int i; - /* This is called by take_over_console() + /* This is called by do_take_over_console() * and others, ie not under our control. */ @@ -1490,8 +1490,9 @@ sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last) mutex_unlock(&sisusb->lock); /* Now grab the desired console(s) */ - ret = take_over_console(&sisusb_con, first - 1, last - 1, 0); - + console_lock(); + ret = do_take_over_console(&sisusb_con, first - 1, last - 1, 0); + console_unlock(); if (!ret) sisusb->haveconsole = 1; else { @@ -1535,11 +1536,14 @@ sisusb_console_exit(struct sisusb_usb_data *sisusb) if (sisusb->haveconsole) { for (i = 0; i < MAX_NR_CONSOLES; i++) - if (sisusb->havethisconsole[i]) - take_over_console(&sisusb_dummy_con, i, i, 0); + if (sisusb->havethisconsole[i]) { + console_lock(); + do_take_over_console(&sisusb_dummy_con, i, i, 0); + console_unlock(); /* At this point, con_deinit for all our - * consoles is executed by take_over_console(). + * consoles is executed by do_take_over_console(). */ + } sisusb->haveconsole = 0; } diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index d3a1cce1bf9c..a31641e18d19 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -26,6 +26,7 @@ #include <linux/of_gpio.h> #include <linux/platform_device.h> #include <linux/platform_data/usb3503.h> +#include <linux/regmap.h> #define USB3503_VIDL 0x00 #define USB3503_VIDM 0x01 @@ -42,9 +43,6 @@ #define USB3503_NRD 0x09 #define USB3503_PDS 0x0a -#define USB3503_PORT1 (1 << 1) -#define USB3503_PORT2 (1 << 2) -#define USB3503_PORT3 (1 << 3) #define USB3503_SP_ILOCK 0xe7 #define USB3503_SPILOCK_CONNECT (1 << 1) @@ -53,234 +51,244 @@ #define USB3503_CFGP 0xee #define USB3503_CLKSUSP (1 << 7) +#define USB3503_RESET 0xff + struct usb3503 { enum usb3503_mode mode; - struct i2c_client *client; + struct regmap *regmap; + struct device *dev; + u8 port_off_mask; int gpio_intn; int gpio_reset; int gpio_connect; }; -static int usb3503_write_register(struct i2c_client *client, - char reg, char data) -{ - return i2c_smbus_write_byte_data(client, reg, data); -} - -static int usb3503_read_register(struct i2c_client *client, char reg) -{ - return i2c_smbus_read_byte_data(client, reg); -} - -static int usb3503_set_bits(struct i2c_client *client, char reg, char req) +static int usb3503_reset(struct usb3503 *hub, int state) { - int err; - - err = usb3503_read_register(client, reg); - if (err < 0) - return err; - - err = usb3503_write_register(client, reg, err | req); - if (err < 0) - return err; - - return 0; -} - -static int usb3503_clear_bits(struct i2c_client *client, char reg, char req) -{ - int err; - - err = usb3503_read_register(client, reg); - if (err < 0) - return err; - - err = usb3503_write_register(client, reg, err & ~req); - if (err < 0) - return err; - - return 0; -} + if (!state && gpio_is_valid(hub->gpio_connect)) + gpio_set_value_cansleep(hub->gpio_connect, 0); -static int usb3503_reset(int gpio_reset, int state) -{ - if (gpio_is_valid(gpio_reset)) - gpio_set_value(gpio_reset, state); + if (gpio_is_valid(hub->gpio_reset)) + gpio_set_value_cansleep(hub->gpio_reset, state); - /* Wait RefClk when RESET_N is released, otherwise Hub will - * not transition to Hub Communication Stage. - */ + /* Wait T_HUBINIT == 4ms for hub logic to stabilize */ if (state) - msleep(100); + usleep_range(4000, 10000); return 0; } -static int usb3503_switch_mode(struct usb3503 *hub, enum usb3503_mode mode) +static int usb3503_connect(struct usb3503 *hub) { - struct i2c_client *i2c = hub->client; - int err = 0; + struct device *dev = hub->dev; + int err; - switch (mode) { - case USB3503_MODE_HUB: - usb3503_reset(hub->gpio_reset, 1); + usb3503_reset(hub, 1); + if (hub->regmap) { /* SP_ILOCK: set connect_n, config_n for config */ - err = usb3503_write_register(i2c, USB3503_SP_ILOCK, - (USB3503_SPILOCK_CONNECT + err = regmap_write(hub->regmap, USB3503_SP_ILOCK, + (USB3503_SPILOCK_CONNECT | USB3503_SPILOCK_CONFIG)); if (err < 0) { - dev_err(&i2c->dev, "SP_ILOCK failed (%d)\n", err); - goto err_hubmode; + dev_err(dev, "SP_ILOCK failed (%d)\n", err); + return err; } - /* PDS : Port2,3 Disable For Self Powered Operation */ - err = usb3503_set_bits(i2c, USB3503_PDS, - (USB3503_PORT2 | USB3503_PORT3)); - if (err < 0) { - dev_err(&i2c->dev, "PDS failed (%d)\n", err); - goto err_hubmode; + /* PDS : Disable For Self Powered Operation */ + if (hub->port_off_mask) { + err = regmap_update_bits(hub->regmap, USB3503_PDS, + hub->port_off_mask, + hub->port_off_mask); + if (err < 0) { + dev_err(dev, "PDS failed (%d)\n", err); + return err; + } } /* CFG1 : SELF_BUS_PWR -> Self-Powerd operation */ - err = usb3503_set_bits(i2c, USB3503_CFG1, USB3503_SELF_BUS_PWR); + err = regmap_update_bits(hub->regmap, USB3503_CFG1, + USB3503_SELF_BUS_PWR, + USB3503_SELF_BUS_PWR); if (err < 0) { - dev_err(&i2c->dev, "CFG1 failed (%d)\n", err); - goto err_hubmode; + dev_err(dev, "CFG1 failed (%d)\n", err); + return err; } /* SP_LOCK: clear connect_n, config_n for hub connect */ - err = usb3503_clear_bits(i2c, USB3503_SP_ILOCK, - (USB3503_SPILOCK_CONNECT - | USB3503_SPILOCK_CONFIG)); + err = regmap_update_bits(hub->regmap, USB3503_SP_ILOCK, + (USB3503_SPILOCK_CONNECT + | USB3503_SPILOCK_CONFIG), 0); if (err < 0) { - dev_err(&i2c->dev, "SP_ILOCK failed (%d)\n", err); - goto err_hubmode; + dev_err(dev, "SP_ILOCK failed (%d)\n", err); + return err; } + } - hub->mode = mode; - dev_info(&i2c->dev, "switched to HUB mode\n"); + if (gpio_is_valid(hub->gpio_connect)) + gpio_set_value_cansleep(hub->gpio_connect, 1); + + hub->mode = USB3503_MODE_HUB; + dev_info(dev, "switched to HUB mode\n"); + + return 0; +} + +static int usb3503_switch_mode(struct usb3503 *hub, enum usb3503_mode mode) +{ + struct device *dev = hub->dev; + int err = 0; + + switch (mode) { + case USB3503_MODE_HUB: + err = usb3503_connect(hub); break; case USB3503_MODE_STANDBY: - usb3503_reset(hub->gpio_reset, 0); + usb3503_reset(hub, 0); hub->mode = mode; - dev_info(&i2c->dev, "switched to STANDBY mode\n"); + dev_info(dev, "switched to STANDBY mode\n"); break; default: - dev_err(&i2c->dev, "unknown mode is request\n"); + dev_err(dev, "unknown mode is requested\n"); err = -EINVAL; break; } -err_hubmode: return err; } -static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) -{ - struct usb3503_platform_data *pdata = i2c->dev.platform_data; - struct device_node *np = i2c->dev.of_node; - struct usb3503 *hub; - int err = -ENOMEM; - u32 mode = USB3503_MODE_UNKNOWN; +static const struct regmap_config usb3503_regmap_config = { + .reg_bits = 8, + .val_bits = 8, - hub = kzalloc(sizeof(struct usb3503), GFP_KERNEL); - if (!hub) { - dev_err(&i2c->dev, "private data alloc fail\n"); - return err; - } + .max_register = USB3503_RESET, +}; - i2c_set_clientdata(i2c, hub); - hub->client = i2c; +static int usb3503_probe(struct usb3503 *hub) +{ + struct device *dev = hub->dev; + struct usb3503_platform_data *pdata = dev_get_platdata(dev); + struct device_node *np = dev->of_node; + int err; + u32 mode = USB3503_MODE_HUB; + const u32 *property; + int len; if (pdata) { + hub->port_off_mask = pdata->port_off_mask; hub->gpio_intn = pdata->gpio_intn; hub->gpio_connect = pdata->gpio_connect; hub->gpio_reset = pdata->gpio_reset; hub->mode = pdata->initial_mode; } else if (np) { - hub->gpio_intn = of_get_named_gpio(np, "connect-gpios", 0); + hub->port_off_mask = 0; + + property = of_get_property(np, "disabled-ports", &len); + if (property && (len / sizeof(u32)) > 0) { + int i; + for (i = 0; i < len / sizeof(u32); i++) { + u32 port = be32_to_cpu(property[i]); + if ((1 <= port) && (port <= 3)) + hub->port_off_mask |= (1 << port); + } + } + + hub->gpio_intn = of_get_named_gpio(np, "intn-gpios", 0); if (hub->gpio_intn == -EPROBE_DEFER) return -EPROBE_DEFER; - hub->gpio_connect = of_get_named_gpio(np, "intn-gpios", 0); + hub->gpio_connect = of_get_named_gpio(np, "connect-gpios", 0); if (hub->gpio_connect == -EPROBE_DEFER) return -EPROBE_DEFER; - hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0); + hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0); if (hub->gpio_reset == -EPROBE_DEFER) return -EPROBE_DEFER; of_property_read_u32(np, "initial-mode", &mode); hub->mode = mode; } + if (hub->port_off_mask && !hub->regmap) + dev_err(dev, "Ports disabled with no control interface\n"); + if (gpio_is_valid(hub->gpio_intn)) { - err = gpio_request_one(hub->gpio_intn, + err = devm_gpio_request_one(dev, hub->gpio_intn, GPIOF_OUT_INIT_HIGH, "usb3503 intn"); if (err) { - dev_err(&i2c->dev, - "unable to request GPIO %d as connect pin (%d)\n", - hub->gpio_intn, err); - goto err_out; + dev_err(dev, + "unable to request GPIO %d as connect pin (%d)\n", + hub->gpio_intn, err); + return err; } } if (gpio_is_valid(hub->gpio_connect)) { - err = gpio_request_one(hub->gpio_connect, - GPIOF_OUT_INIT_HIGH, "usb3503 connect"); + err = devm_gpio_request_one(dev, hub->gpio_connect, + GPIOF_OUT_INIT_LOW, "usb3503 connect"); if (err) { - dev_err(&i2c->dev, - "unable to request GPIO %d as connect pin (%d)\n", - hub->gpio_connect, err); - goto err_gpio_connect; + dev_err(dev, + "unable to request GPIO %d as connect pin (%d)\n", + hub->gpio_connect, err); + return err; } } if (gpio_is_valid(hub->gpio_reset)) { - err = gpio_request_one(hub->gpio_reset, + err = devm_gpio_request_one(dev, hub->gpio_reset, GPIOF_OUT_INIT_LOW, "usb3503 reset"); if (err) { - dev_err(&i2c->dev, - "unable to request GPIO %d as reset pin (%d)\n", - hub->gpio_reset, err); - goto err_gpio_reset; + dev_err(dev, + "unable to request GPIO %d as reset pin (%d)\n", + hub->gpio_reset, err); + return err; } } usb3503_switch_mode(hub, hub->mode); - dev_info(&i2c->dev, "%s: probed on %s mode\n", __func__, + dev_info(dev, "%s: probed in %s mode\n", __func__, (hub->mode == USB3503_MODE_HUB) ? "hub" : "standby"); return 0; +} -err_gpio_reset: - if (gpio_is_valid(hub->gpio_connect)) - gpio_free(hub->gpio_connect); -err_gpio_connect: - if (gpio_is_valid(hub->gpio_intn)) - gpio_free(hub->gpio_intn); -err_out: - kfree(hub); +static int usb3503_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct usb3503 *hub; + int err; - return err; + hub = devm_kzalloc(&i2c->dev, sizeof(struct usb3503), GFP_KERNEL); + if (!hub) { + dev_err(&i2c->dev, "private data alloc fail\n"); + return -ENOMEM; + } + + i2c_set_clientdata(i2c, hub); + hub->regmap = devm_regmap_init_i2c(i2c, &usb3503_regmap_config); + if (IS_ERR(hub->regmap)) { + err = PTR_ERR(hub->regmap); + dev_err(&i2c->dev, "Failed to initialise regmap: %d\n", err); + return err; + } + hub->dev = &i2c->dev; + + return usb3503_probe(hub); } -static int usb3503_remove(struct i2c_client *i2c) +static int usb3503_platform_probe(struct platform_device *pdev) { - struct usb3503 *hub = i2c_get_clientdata(i2c); - - if (gpio_is_valid(hub->gpio_intn)) - gpio_free(hub->gpio_intn); - if (gpio_is_valid(hub->gpio_connect)) - gpio_free(hub->gpio_connect); - if (gpio_is_valid(hub->gpio_reset)) - gpio_free(hub->gpio_reset); + struct usb3503 *hub; - kfree(hub); + hub = devm_kzalloc(&pdev->dev, sizeof(struct usb3503), GFP_KERNEL); + if (!hub) { + dev_err(&pdev->dev, "private data alloc fail\n"); + return -ENOMEM; + } + hub->dev = &pdev->dev; - return 0; + return usb3503_probe(hub); } static const struct i2c_device_id usb3503_id[] = { @@ -292,22 +300,53 @@ MODULE_DEVICE_TABLE(i2c, usb3503_id); #ifdef CONFIG_OF static const struct of_device_id usb3503_of_match[] = { { .compatible = "smsc,usb3503", }, + { .compatible = "smsc,usb3503a", }, {}, }; MODULE_DEVICE_TABLE(of, usb3503_of_match); #endif -static struct i2c_driver usb3503_driver = { +static struct i2c_driver usb3503_i2c_driver = { .driver = { .name = USB3503_I2C_NAME, .of_match_table = of_match_ptr(usb3503_of_match), }, - .probe = usb3503_probe, - .remove = usb3503_remove, + .probe = usb3503_i2c_probe, .id_table = usb3503_id, }; -module_i2c_driver(usb3503_driver); +static struct platform_driver usb3503_platform_driver = { + .driver = { + .name = USB3503_I2C_NAME, + .of_match_table = of_match_ptr(usb3503_of_match), + .owner = THIS_MODULE, + }, + .probe = usb3503_platform_probe, +}; + +static int __init usb3503_init(void) +{ + int err; + + err = i2c_register_driver(THIS_MODULE, &usb3503_i2c_driver); + if (err != 0) + pr_err("usb3503: Failed to register I2C driver: %d\n", err); + + err = platform_driver_register(&usb3503_platform_driver); + if (err != 0) + pr_err("usb3503: Failed to register platform driver: %d\n", + err); + + return 0; +} +module_init(usb3503_init); + +static void __exit usb3503_exit(void) +{ + platform_driver_unregister(&usb3503_platform_driver); + i2c_del_driver(&usb3503_i2c_driver); +} +module_exit(usb3503_exit); MODULE_AUTHOR("Dongjin Kim <tobetter@gmail.com>"); MODULE_DESCRIPTION("USB3503 USB HUB driver"); diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 8b4ca1cb450a..aa28ac8c7607 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -747,9 +747,9 @@ static int ch9_postconfig(struct usbtest_dev *dev) /* [9.4.5] get_status always works */ retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf); - if (retval != 2) { + if (retval) { dev_err(&iface->dev, "get dev status --> %d\n", retval); - return (retval < 0) ? retval : -EDOM; + return retval; } /* FIXME configuration.bmAttributes says if we could try to set/clear @@ -758,9 +758,9 @@ static int ch9_postconfig(struct usbtest_dev *dev) retval = usb_get_status(udev, USB_RECIP_INTERFACE, iface->altsetting[0].desc.bInterfaceNumber, dev->buf); - if (retval != 2) { + if (retval) { dev_err(&iface->dev, "get interface status --> %d\n", retval); - return (retval < 0) ? retval : -EDOM; + return retval; } /* FIXME get status for each endpoint in the interface */ @@ -1351,7 +1351,6 @@ static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb) ep, retval); return retval; } - le16_to_cpus(&status); if (status != 1) { ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status); return -EINVAL; diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index e129cf661223..40ef40affe83 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -75,7 +75,7 @@ struct uss720_async_request { struct list_head asynclist; struct completion compl; struct urb *urb; - struct usb_ctrlrequest dr; + struct usb_ctrlrequest *dr; __u8 reg[7]; }; @@ -98,6 +98,7 @@ static void destroy_async(struct kref *kref) if (likely(rq->urb)) usb_free_urb(rq->urb); + kfree(rq->dr); spin_lock_irqsave(&priv->asynclock, flags); list_del_init(&rq->asynclist); spin_unlock_irqrestore(&priv->asynclock, flags); @@ -120,7 +121,7 @@ static void async_complete(struct urb *urb) if (status) { dev_err(&urb->dev->dev, "async_complete: urb error %d\n", status); - } else if (rq->dr.bRequest == 3) { + } else if (rq->dr->bRequest == 3) { memcpy(priv->reg, rq->reg, sizeof(priv->reg)); #if 0 dev_dbg(&priv->usbdev->dev, @@ -152,7 +153,7 @@ static struct uss720_async_request *submit_async_request(struct parport_uss720_p usbdev = priv->usbdev; if (!usbdev) return NULL; - rq = kmalloc(sizeof(struct uss720_async_request), mem_flags); + rq = kzalloc(sizeof(struct uss720_async_request), mem_flags); if (!rq) { dev_err(&usbdev->dev, "submit_async_request out of memory\n"); return NULL; @@ -168,13 +169,18 @@ static struct uss720_async_request *submit_async_request(struct parport_uss720_p dev_err(&usbdev->dev, "submit_async_request out of memory\n"); return NULL; } - rq->dr.bRequestType = requesttype; - rq->dr.bRequest = request; - rq->dr.wValue = cpu_to_le16(value); - rq->dr.wIndex = cpu_to_le16(index); - rq->dr.wLength = cpu_to_le16((request == 3) ? sizeof(rq->reg) : 0); + rq->dr = kmalloc(sizeof(*rq->dr), mem_flags); + if (!rq->dr) { + kref_put(&rq->ref_count, destroy_async); + return NULL; + } + rq->dr->bRequestType = requesttype; + rq->dr->bRequest = request; + rq->dr->wValue = cpu_to_le16(value); + rq->dr->wIndex = cpu_to_le16(index); + rq->dr->wLength = cpu_to_le16((request == 3) ? sizeof(rq->reg) : 0); usb_fill_control_urb(rq->urb, usbdev, (requesttype & 0x80) ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0), - (unsigned char *)&rq->dr, + (unsigned char *)rq->dr, (request == 3) ? rq->reg : NULL, (request == 3) ? sizeof(rq->reg) : 0, async_complete, rq); /* rq->urb->transfer_flags |= URB_ASYNC_UNLINK; */ spin_lock_irqsave(&priv->asynclock, flags); diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 06f8d29af1ef..c64ee09a7c0e 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -28,6 +28,35 @@ config USB_MUSB_HDRC if USB_MUSB_HDRC choice + bool "MUSB Mode Selection" + default USB_MUSB_DUAL_ROLE if (USB && USB_GADGET) + default USB_MUSB_HOST if (USB && !USB_GADGET) + default USB_MUSB_GADGET if (!USB && USB_GADGET) + +config USB_MUSB_HOST + bool "Host only mode" + depends on USB + help + Select this when you want to use MUSB in host mode only, + thereby the gadget feature will be regressed. + +config USB_MUSB_GADGET + bool "Gadget only mode" + depends on USB_GADGET + help + Select this when you want to use MUSB in gadget mode only, + thereby the host feature will be regressed. + +config USB_MUSB_DUAL_ROLE + bool "Dual Role mode" + depends on (USB && USB_GADGET) + help + This is the default mode of working of MUSB controller where + both host and gadget features are enabled. + +endchoice + +choice prompt "Platform Glue Layer" config USB_MUSB_DAVINCI @@ -54,6 +83,8 @@ config USB_MUSB_AM35X config USB_MUSB_DSPS tristate "TI DSPS platforms" + select USB_MUSB_AM335X_CHILD + depends on OF_IRQ config USB_MUSB_BLACKFIN tristate "Blackfin" @@ -64,6 +95,9 @@ config USB_MUSB_UX500 endchoice +config USB_MUSB_AM335X_CHILD + tristate + choice prompt 'MUSB DMA mode' default MUSB_PIO_ONLY if ARCH_MULTIPLATFORM @@ -96,6 +130,10 @@ config USB_TI_CPPI_DMA help Enable DMA transfers when TI CPPI DMA is available. +config USB_TI_CPPI41_DMA + bool 'TI CPPI 4.1 (AM335x)' + depends on ARCH_OMAP + config USB_TUSB_OMAP_DMA bool 'TUSB 6010' depends on USB_MUSB_TUSB6010 diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile index 3b858715b5ea..c5ea5c6dc169 100644 --- a/drivers/usb/musb/Makefile +++ b/drivers/usb/musb/Makefile @@ -6,8 +6,8 @@ obj-$(CONFIG_USB_MUSB_HDRC) += musb_hdrc.o musb_hdrc-y := musb_core.o -musb_hdrc-y += musb_gadget_ep0.o musb_gadget.o -musb_hdrc-y += musb_virthub.o musb_host.o +musb_hdrc-$(CONFIG_USB_MUSB_HOST)$(CONFIG_USB_MUSB_DUAL_ROLE) += musb_virthub.o musb_host.o +musb_hdrc-$(CONFIG_USB_MUSB_GADGET)$(CONFIG_USB_MUSB_DUAL_ROLE) += musb_gadget_ep0.o musb_gadget.o musb_hdrc-$(CONFIG_DEBUG_FS) += musb_debugfs.o # Hardware Glue Layer @@ -20,6 +20,9 @@ obj-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o obj-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o obj-$(CONFIG_USB_MUSB_UX500) += ux500.o + +obj-$(CONFIG_USB_MUSB_AM335X_CHILD) += musb_am335x.o + # the kconfig must guarantee that only one of the # possible I/O schemes will be enabled at a time ... # PIO only, or DMA (several potential schemes). @@ -29,3 +32,4 @@ musb_hdrc-$(CONFIG_USB_INVENTRA_DMA) += musbhsdma.o musb_hdrc-$(CONFIG_USB_TI_CPPI_DMA) += cppi_dma.o musb_hdrc-$(CONFIG_USB_TUSB_OMAP_DMA) += tusb6010_omap.o musb_hdrc-$(CONFIG_USB_UX500_DMA) += ux500_dma.o +musb_hdrc-$(CONFIG_USB_TI_CPPI41_DMA) += musb_cppi41.o diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c index 2231850c0625..5c310c664218 100644 --- a/drivers/usb/musb/am35x.c +++ b/drivers/usb/musb/am35x.c @@ -33,7 +33,7 @@ #include <linux/io.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_gen_xceiv.h> #include <linux/platform_data/usb-omap.h> #include "musb_core.h" @@ -218,7 +218,7 @@ static irqreturn_t am35x_musb_interrupt(int irq, void *hci) struct musb *musb = hci; void __iomem *reg_base = musb->ctrl_base; struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; struct usb_otg *otg = musb->xceiv->otg; unsigned long flags; @@ -335,7 +335,7 @@ eoi: static int am35x_musb_set_mode(struct musb *musb, u8 musb_mode) { struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; int retval = 0; @@ -350,7 +350,7 @@ static int am35x_musb_set_mode(struct musb *musb, u8 musb_mode) static int am35x_musb_init(struct musb *musb) { struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; void __iomem *reg_base = musb->ctrl_base; u32 rev; @@ -394,7 +394,7 @@ static int am35x_musb_init(struct musb *musb) static int am35x_musb_exit(struct musb *musb) { struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; del_timer_sync(&otg_workaround); @@ -456,7 +456,7 @@ static u64 am35x_dmamask = DMA_BIT_MASK(32); static int am35x_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct am35x_glue *glue; @@ -577,7 +577,7 @@ static int am35x_remove(struct platform_device *pdev) static int am35x_suspend(struct device *dev) { struct am35x_glue *glue = dev_get_drvdata(dev); - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; /* Shutdown the on-chip PHY and its PLL. */ @@ -593,7 +593,7 @@ static int am35x_suspend(struct device *dev) static int am35x_resume(struct device *dev) { struct am35x_glue *glue = dev_get_drvdata(dev); - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; int ret; diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 5e63b160db0c..72e2056b6082 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -19,7 +19,7 @@ #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/prefetch.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_gen_xceiv.h> #include <asm/cacheflush.h> @@ -450,7 +450,8 @@ static u64 bfin_dmamask = DMA_BIT_MASK(32); static int bfin_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[2]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct bfin_glue *glue; @@ -479,8 +480,21 @@ static int bfin_probe(struct platform_device *pdev) platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err3; diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c index 9db211ee15b5..904fb85d85a6 100644 --- a/drivers/usb/musb/cppi_dma.c +++ b/drivers/usb/musb/cppi_dma.c @@ -150,14 +150,11 @@ static void cppi_pool_free(struct cppi_channel *c) c->last_processed = NULL; } -static int cppi_controller_start(struct dma_controller *c) +static void cppi_controller_start(struct cppi *controller) { - struct cppi *controller; void __iomem *tibase; int i; - controller = container_of(c, struct cppi, controller); - /* do whatever is necessary to start controller */ for (i = 0; i < ARRAY_SIZE(controller->tx); i++) { controller->tx[i].transmit = true; @@ -212,8 +209,6 @@ static int cppi_controller_start(struct dma_controller *c) /* disable RNDIS mode, also host rx RNDIS autorequest */ musb_writel(tibase, DAVINCI_RNDIS_REG, 0); musb_writel(tibase, DAVINCI_AUTOREQ_REG, 0); - - return 0; } /* @@ -222,14 +217,12 @@ static int cppi_controller_start(struct dma_controller *c) * De-Init the DMA controller as necessary. */ -static int cppi_controller_stop(struct dma_controller *c) +static void cppi_controller_stop(struct cppi *controller) { - struct cppi *controller; void __iomem *tibase; int i; struct musb *musb; - controller = container_of(c, struct cppi, controller); musb = controller->musb; tibase = controller->tibase; @@ -255,8 +248,6 @@ static int cppi_controller_stop(struct dma_controller *c) /*disable tx/rx cppi */ musb_writel(tibase, DAVINCI_TXCPPI_CTRL_REG, DAVINCI_DMA_CTRL_DISABLE); musb_writel(tibase, DAVINCI_RXCPPI_CTRL_REG, DAVINCI_DMA_CTRL_DISABLE); - - return 0; } /* While dma channel is allocated, we only want the core irqs active @@ -1321,8 +1312,6 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *mr controller->tibase = mregs - DAVINCI_BASE_OFFSET; controller->musb = musb; - controller->controller.start = cppi_controller_start; - controller->controller.stop = cppi_controller_stop; controller->controller.channel_alloc = cppi_channel_allocate; controller->controller.channel_release = cppi_channel_release; controller->controller.channel_program = cppi_channel_program; @@ -1351,6 +1340,7 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *mr controller->irq = irq; } + cppi_controller_start(controller); return &controller->controller; } @@ -1363,6 +1353,8 @@ void dma_controller_destroy(struct dma_controller *c) cppi = container_of(c, struct cppi, controller); + cppi_controller_stop(cppi); + if (cppi->irq) free_irq(cppi->irq, cppi->musb); diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index b903b744a224..d9ddf4122f37 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -33,7 +33,7 @@ #include <linux/io.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_gen_xceiv.h> #include <mach/da8xx.h> #include <linux/platform_data/usb-davinci.h> @@ -476,7 +476,8 @@ static u64 da8xx_dmamask = DMA_BIT_MASK(32); static int da8xx_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[2]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct da8xx_glue *glue; @@ -521,8 +522,21 @@ static int da8xx_probe(struct platform_device *pdev) platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err5; diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c index bea6cc35471c..ed0834e2b72e 100644 --- a/drivers/usb/musb/davinci.c +++ b/drivers/usb/musb/davinci.c @@ -33,7 +33,7 @@ #include <linux/gpio.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_gen_xceiv.h> #include <mach/cputype.h> #include <mach/hardware.h> @@ -509,7 +509,8 @@ static u64 davinci_dmamask = DMA_BIT_MASK(32); static int davinci_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[2]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct davinci_glue *glue; struct clk *clk; @@ -553,8 +554,21 @@ static int davinci_probe(struct platform_device *pdev) platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err5; diff --git a/drivers/usb/musb/musb_am335x.c b/drivers/usb/musb/musb_am335x.c new file mode 100644 index 000000000000..41ac5b5b57ce --- /dev/null +++ b/drivers/usb/musb/musb_am335x.c @@ -0,0 +1,55 @@ +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/module.h> +#include <linux/of_platform.h> + +static int am335x_child_probe(struct platform_device *pdev) +{ + int ret; + + pm_runtime_enable(&pdev->dev); + + ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); + if (ret) + goto err; + + return 0; +err: + pm_runtime_disable(&pdev->dev); + return ret; +} + +static int of_remove_populated_child(struct device *dev, void *d) +{ + struct platform_device *pdev = to_platform_device(dev); + + of_device_unregister(pdev); + return 0; +} + +static int am335x_child_remove(struct platform_device *pdev) +{ + device_for_each_child(&pdev->dev, NULL, of_remove_populated_child); + pm_runtime_disable(&pdev->dev); + return 0; +} + +static const struct of_device_id am335x_child_of_match[] = { + { .compatible = "ti,am33xx-usb" }, + { }, +}; +MODULE_DEVICE_TABLE(of, am335x_child_of_match); + +static struct platform_driver am335x_child_driver = { + .probe = am335x_child_probe, + .remove = am335x_child_remove, + .driver = { + .name = "am335x-usb-childs", + .of_match_table = of_match_ptr(am335x_child_of_match), + }, +}; + +module_platform_driver(am335x_child_driver); +MODULE_DESCRIPTION("AM33xx child devices"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 37a261a6bb6a..18e877ffe7b7 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -99,7 +99,6 @@ #include <linux/prefetch.h> #include <linux/platform_device.h> #include <linux/io.h> -#include <linux/idr.h> #include <linux/dma-mapping.h> #include "musb_core.h" @@ -380,7 +379,6 @@ static void musb_otg_timer_func(unsigned long data) dev_dbg(musb->controller, "HNP: Unhandled mode %s\n", usb_otg_state_string(musb->xceiv->state)); } - musb->ignore_disconnect = 0; spin_unlock_irqrestore(&musb->lock, flags); } @@ -389,7 +387,7 @@ static void musb_otg_timer_func(unsigned long data) */ void musb_hnp_stop(struct musb *musb) { - struct usb_hcd *hcd = musb_to_hcd(musb); + struct usb_hcd *hcd = musb->hcd; void __iomem *mbase = musb->mregs; u8 reg; @@ -404,7 +402,8 @@ void musb_hnp_stop(struct musb *musb) break; case OTG_STATE_B_HOST: dev_dbg(musb->controller, "HNP: Disabling HR\n"); - hcd->self.is_b_host = 0; + if (hcd) + hcd->self.is_b_host = 0; musb->xceiv->state = OTG_STATE_B_PERIPHERAL; MUSB_DEV_MODE(musb); reg = musb_readb(mbase, MUSB_POWER); @@ -484,7 +483,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, musb->xceiv->state = OTG_STATE_A_HOST; musb->is_active = 1; - usb_hcd_resume_root_hub(musb_to_hcd(musb)); + musb_host_resume_root_hub(musb); break; case OTG_STATE_B_WAIT_ACON: musb->xceiv->state = OTG_STATE_B_PERIPHERAL; @@ -501,7 +500,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, case OTG_STATE_A_SUSPEND: /* possibly DISCONNECT is upcoming */ musb->xceiv->state = OTG_STATE_A_HOST; - usb_hcd_resume_root_hub(musb_to_hcd(musb)); + musb_host_resume_root_hub(musb); break; case OTG_STATE_B_WAIT_ACON: case OTG_STATE_B_PERIPHERAL: @@ -643,7 +642,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, * undesired detour through A_WAIT_BCON. */ musb_hnp_stop(musb); - usb_hcd_resume_root_hub(musb_to_hcd(musb)); + musb_host_resume_root_hub(musb); musb_root_disconnect(musb); musb_platform_try_idle(musb, jiffies + msecs_to_jiffies(musb->a_wait_bcon @@ -685,7 +684,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, } if (int_usb & MUSB_INTR_CONNECT) { - struct usb_hcd *hcd = musb_to_hcd(musb); + struct usb_hcd *hcd = musb->hcd; handled = IRQ_HANDLED; musb->is_active = 1; @@ -726,31 +725,27 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, dev_dbg(musb->controller, "HNP: CONNECT, now b_host\n"); b_host: musb->xceiv->state = OTG_STATE_B_HOST; - hcd->self.is_b_host = 1; - musb->ignore_disconnect = 0; + if (musb->hcd) + musb->hcd->self.is_b_host = 1; del_timer(&musb->otg_timer); break; default: if ((devctl & MUSB_DEVCTL_VBUS) == (3 << MUSB_DEVCTL_VBUS_SHIFT)) { musb->xceiv->state = OTG_STATE_A_HOST; - hcd->self.is_b_host = 0; + if (hcd) + hcd->self.is_b_host = 0; } break; } - /* poke the root hub */ - MUSB_HST_MODE(musb); - if (hcd->status_urb) - usb_hcd_poll_rh_status(hcd); - else - usb_hcd_resume_root_hub(hcd); + musb_host_poke_root_hub(musb); dev_dbg(musb->controller, "CONNECT (%s) devctl %02x\n", usb_otg_state_string(musb->xceiv->state), devctl); } - if ((int_usb & MUSB_INTR_DISCONNECT) && !musb->ignore_disconnect) { + if (int_usb & MUSB_INTR_DISCONNECT) { dev_dbg(musb->controller, "DISCONNECT (%s) as %s, devctl %02x\n", usb_otg_state_string(musb->xceiv->state), MUSB_MODE(musb), devctl); @@ -759,7 +754,7 @@ b_host: switch (musb->xceiv->state) { case OTG_STATE_A_HOST: case OTG_STATE_A_SUSPEND: - usb_hcd_resume_root_hub(musb_to_hcd(musb)); + musb_host_resume_root_hub(musb); musb_root_disconnect(musb); if (musb->a_wait_bcon != 0) musb_platform_try_idle(musb, jiffies @@ -772,7 +767,8 @@ b_host: * in hnp_stop() is currently not used... */ musb_root_disconnect(musb); - musb_to_hcd(musb)->self.is_b_host = 0; + if (musb->hcd) + musb->hcd->self.is_b_host = 0; musb->xceiv->state = OTG_STATE_B_PERIPHERAL; MUSB_DEV_MODE(musb); musb_g_disconnect(musb); @@ -818,11 +814,6 @@ b_host: usb_otg_state_string(musb->xceiv->state)); switch (musb->xceiv->state) { case OTG_STATE_A_SUSPEND: - /* We need to ignore disconnect on suspend - * otherwise tusb 2.0 won't reconnect after a - * power cycle, which breaks otg compliance. - */ - musb->ignore_disconnect = 1; musb_g_reset(musb); /* FALLTHROUGH */ case OTG_STATE_A_WAIT_BCON: /* OPT TD.4.7-900ms */ @@ -834,7 +825,6 @@ b_host: + msecs_to_jiffies(TA_WAIT_BCON(musb))); break; case OTG_STATE_A_PERIPHERAL: - musb->ignore_disconnect = 0; del_timer(&musb->otg_timer); musb_g_reset(musb); break; @@ -909,51 +899,6 @@ b_host: /*-------------------------------------------------------------------------*/ -/* -* Program the HDRC to start (enable interrupts, dma, etc.). -*/ -void musb_start(struct musb *musb) -{ - void __iomem *regs = musb->mregs; - u8 devctl = musb_readb(regs, MUSB_DEVCTL); - - dev_dbg(musb->controller, "<== devctl %02x\n", devctl); - - /* Set INT enable registers, enable interrupts */ - musb->intrtxe = musb->epmask; - musb_writew(regs, MUSB_INTRTXE, musb->intrtxe); - musb->intrrxe = musb->epmask & 0xfffe; - musb_writew(regs, MUSB_INTRRXE, musb->intrrxe); - musb_writeb(regs, MUSB_INTRUSBE, 0xf7); - - musb_writeb(regs, MUSB_TESTMODE, 0); - - /* put into basic highspeed mode and start session */ - musb_writeb(regs, MUSB_POWER, MUSB_POWER_ISOUPDATE - | MUSB_POWER_HSENAB - /* ENSUSPEND wedges tusb */ - /* | MUSB_POWER_ENSUSPEND */ - ); - - musb->is_active = 0; - devctl = musb_readb(regs, MUSB_DEVCTL); - devctl &= ~MUSB_DEVCTL_SESSION; - - /* session started after: - * (a) ID-grounded irq, host mode; - * (b) vbus present/connect IRQ, peripheral mode; - * (c) peripheral initiates, using SRP - */ - if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) - musb->is_active = 1; - else - devctl |= MUSB_DEVCTL_SESSION; - - musb_platform_enable(musb); - musb_writeb(regs, MUSB_DEVCTL, devctl); -} - - static void musb_generic_disable(struct musb *musb) { void __iomem *mbase = musb->mregs; @@ -1007,6 +952,7 @@ static void musb_shutdown(struct platform_device *pdev) pm_runtime_get_sync(musb->controller); + musb_host_cleanup(musb); musb_gadget_cleanup(musb); spin_lock_irqsave(&musb->lock, flags); @@ -1763,24 +1709,18 @@ static struct musb *allocate_instance(struct device *dev, struct musb *musb; struct musb_hw_ep *ep; int epnum; - struct usb_hcd *hcd; + int ret; - hcd = usb_create_hcd(&musb_hc_driver, dev, dev_name(dev)); - if (!hcd) + musb = devm_kzalloc(dev, sizeof(*musb), GFP_KERNEL); + if (!musb) return NULL; - /* usbcore sets dev->driver_data to hcd, and sometimes uses that... */ - musb = hcd_to_musb(hcd); INIT_LIST_HEAD(&musb->control); INIT_LIST_HEAD(&musb->in_bulk); INIT_LIST_HEAD(&musb->out_bulk); - hcd->uses_new_polling = 1; - hcd->has_tt = 1; - musb->vbuserr_retry = VBUSERR_RETRY_COUNT; musb->a_wait_bcon = OTG_TIME_A_WAIT_BCON; - dev_set_drvdata(dev, musb); musb->mregs = mbase; musb->ctrl_base = mbase; musb->nIrq = -ENODEV; @@ -1795,7 +1735,16 @@ static struct musb *allocate_instance(struct device *dev, musb->controller = dev; + ret = musb_host_alloc(musb); + if (ret < 0) + goto err_free; + + dev_set_drvdata(dev, musb); + return musb; + +err_free: + return NULL; } static void musb_free(struct musb *musb) @@ -1814,14 +1763,10 @@ static void musb_free(struct musb *musb) disable_irq_wake(musb->nIrq); free_irq(musb->nIrq, musb); } - if (is_dma_capable() && musb->dma_controller) { - struct dma_controller *c = musb->dma_controller; - - (void) c->stop(c); - dma_controller_destroy(c); - } + if (musb->dma_controller) + dma_controller_destroy(musb->dma_controller); - usb_put_hcd(musb_to_hcd(musb)); + musb_host_free(musb); } /* @@ -1837,8 +1782,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) { int status; struct musb *musb; - struct musb_hdrc_platform_data *plat = dev->platform_data; - struct usb_hcd *hcd; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); /* The driver might handle more features than the board; OK. * Fail when the board needs a feature that's not enabled. @@ -1864,6 +1808,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) musb->board_set_power = plat->set_power; musb->min_power = plat->min_power; musb->ops = plat->platform_ops; + musb->port_mode = plat->mode; /* The musb_platform_init() call: * - adjusts musb->mregs @@ -1894,19 +1839,8 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) pm_runtime_get_sync(musb->controller); -#ifndef CONFIG_MUSB_PIO_ONLY - if (use_dma && dev->dma_mask) { - struct dma_controller *c; - - c = dma_controller_create(musb, musb->mregs); - musb->dma_controller = c; - if (c) - (void) c->start(c); - } -#endif - /* ideally this would be abstracted in platform setup */ - if (!is_dma_capable() || !musb->dma_controller) - dev->dma_mask = NULL; + if (use_dma && dev->dma_mask) + musb->dma_controller = dma_controller_create(musb, musb->mregs); /* be sure interrupts are disabled before connecting ISR */ musb_platform_disable(musb); @@ -1939,13 +1873,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) musb->irq_wake = 0; } - /* host side needs more setup */ - hcd = musb_to_hcd(musb); - otg_set_host(musb->xceiv->otg, &hcd->self); - hcd->self.otg_port = 1; - musb->xceiv->otg->host = &hcd->self; - hcd->power_budget = 2 * (plat->power ? : 250); - /* program PHY to use external vBus if required */ if (plat->extvbus) { u8 busctl = musb_read_ulpi_buscontrol(musb->mregs); @@ -1961,7 +1888,23 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) musb->xceiv->state = OTG_STATE_B_IDLE; } - status = musb_gadget_setup(musb); + switch (musb->port_mode) { + case MUSB_PORT_MODE_HOST: + status = musb_host_setup(musb, plat->power); + break; + case MUSB_PORT_MODE_GADGET: + status = musb_gadget_setup(musb); + break; + case MUSB_PORT_MODE_DUAL_ROLE: + status = musb_host_setup(musb, plat->power); + if (status < 0) + goto fail3; + status = musb_gadget_setup(musb); + break; + default: + dev_err(dev, "unsupported port mode %d\n", musb->port_mode); + break; + } if (status < 0) goto fail3; @@ -1985,6 +1928,8 @@ fail4: musb_gadget_cleanup(musb); fail3: + if (musb->dma_controller) + dma_controller_destroy(musb->dma_controller); pm_runtime_put_sync(musb->controller); fail2: @@ -2043,9 +1988,6 @@ static int musb_remove(struct platform_device *pdev) musb_free(musb); device_init_wakeup(dev, 0); -#ifndef CONFIG_MUSB_PIO_ONLY - dma_set_mask(dev, *dev->parent->dma_mask); -#endif return 0; } diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 7fb4819a6f11..65f3917b4fc5 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -77,27 +77,11 @@ struct musb_ep; #define is_peripheral_active(m) (!(m)->is_host) #define is_host_active(m) ((m)->is_host) -#ifdef CONFIG_PROC_FS -#include <linux/fs.h> -#define MUSB_CONFIG_PROC_FS -#endif - -/****************************** PERIPHERAL ROLE *****************************/ - -extern irqreturn_t musb_g_ep0_irq(struct musb *); -extern void musb_g_tx(struct musb *, u8); -extern void musb_g_rx(struct musb *, u8); -extern void musb_g_reset(struct musb *); -extern void musb_g_suspend(struct musb *); -extern void musb_g_resume(struct musb *); -extern void musb_g_wakeup(struct musb *); -extern void musb_g_disconnect(struct musb *); - -/****************************** HOST ROLE ***********************************/ - -extern irqreturn_t musb_h_ep0_irq(struct musb *); -extern void musb_host_tx(struct musb *, u8); -extern void musb_host_rx(struct musb *, u8); +enum { + MUSB_PORT_MODE_HOST = 1, + MUSB_PORT_MODE_GADGET, + MUSB_PORT_MODE_DUAL_ROLE, +}; /****************************** CONSTANTS ********************************/ @@ -373,6 +357,7 @@ struct musb { u8 min_power; /* vbus for periph, in mA/2 */ + int port_mode; /* MUSB_PORT_MODE_* */ bool is_host; int a_wait_bcon; /* VBUS timeout in msecs */ @@ -382,7 +367,6 @@ struct musb { unsigned is_active:1; unsigned is_multipoint:1; - unsigned ignore_disconnect:1; /* during bus resets */ unsigned hb_iso_rx:1; /* high bandwidth iso rx? */ unsigned hb_iso_tx:1; /* high bandwidth iso tx? */ @@ -419,6 +403,7 @@ struct musb { enum musb_g_ep0_state ep0_state; struct usb_gadget g; /* the gadget */ struct usb_gadget_driver *gadget_driver; /* its driver */ + struct usb_hcd *hcd; /* the usb hcd */ /* * FIXME: Remove this flag. @@ -435,9 +420,6 @@ struct musb { struct musb_hdrc_config *config; -#ifdef MUSB_CONFIG_PROC_FS - struct proc_dir_entry *proc_entry; -#endif int xceiv_old_state; #ifdef CONFIG_DEBUG_FS struct dentry *debugfs_root; @@ -520,7 +502,6 @@ static inline void musb_configure_ep0(struct musb *musb) extern const char musb_driver_name[]; -extern void musb_start(struct musb *musb); extern void musb_stop(struct musb *musb); extern void musb_write_fifo(struct musb_hw_ep *ep, u16 len, const u8 *src); diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c new file mode 100644 index 000000000000..ae959746f77f --- /dev/null +++ b/drivers/usb/musb/musb_cppi41.c @@ -0,0 +1,557 @@ +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/dmaengine.h> +#include <linux/sizes.h> +#include <linux/platform_device.h> +#include <linux/of.h> + +#include "musb_core.h" + +#define RNDIS_REG(x) (0x80 + ((x - 1) * 4)) + +#define EP_MODE_AUTOREG_NONE 0 +#define EP_MODE_AUTOREG_ALL_NEOP 1 +#define EP_MODE_AUTOREG_ALWAYS 3 + +#define EP_MODE_DMA_TRANSPARENT 0 +#define EP_MODE_DMA_RNDIS 1 +#define EP_MODE_DMA_GEN_RNDIS 3 + +#define USB_CTRL_TX_MODE 0x70 +#define USB_CTRL_RX_MODE 0x74 +#define USB_CTRL_AUTOREQ 0xd0 +#define USB_TDOWN 0xd8 + +struct cppi41_dma_channel { + struct dma_channel channel; + struct cppi41_dma_controller *controller; + struct musb_hw_ep *hw_ep; + struct dma_chan *dc; + dma_cookie_t cookie; + u8 port_num; + u8 is_tx; + u8 is_allocated; + u8 usb_toggle; + + dma_addr_t buf_addr; + u32 total_len; + u32 prog_len; + u32 transferred; + u32 packet_sz; +}; + +#define MUSB_DMA_NUM_CHANNELS 15 + +struct cppi41_dma_controller { + struct dma_controller controller; + struct cppi41_dma_channel rx_channel[MUSB_DMA_NUM_CHANNELS]; + struct cppi41_dma_channel tx_channel[MUSB_DMA_NUM_CHANNELS]; + struct musb *musb; + u32 rx_mode; + u32 tx_mode; + u32 auto_req; +}; + +static void save_rx_toggle(struct cppi41_dma_channel *cppi41_channel) +{ + u16 csr; + u8 toggle; + + if (cppi41_channel->is_tx) + return; + if (!is_host_active(cppi41_channel->controller->musb)) + return; + + csr = musb_readw(cppi41_channel->hw_ep->regs, MUSB_RXCSR); + toggle = csr & MUSB_RXCSR_H_DATATOGGLE ? 1 : 0; + + cppi41_channel->usb_toggle = toggle; +} + +static void update_rx_toggle(struct cppi41_dma_channel *cppi41_channel) +{ + u16 csr; + u8 toggle; + + if (cppi41_channel->is_tx) + return; + if (!is_host_active(cppi41_channel->controller->musb)) + return; + + csr = musb_readw(cppi41_channel->hw_ep->regs, MUSB_RXCSR); + toggle = csr & MUSB_RXCSR_H_DATATOGGLE ? 1 : 0; + + /* + * AM335x Advisory 1.0.13: Due to internal synchronisation error the + * data toggle may reset from DATA1 to DATA0 during receiving data from + * more than one endpoint. + */ + if (!toggle && toggle == cppi41_channel->usb_toggle) { + csr |= MUSB_RXCSR_H_DATATOGGLE | MUSB_RXCSR_H_WR_DATATOGGLE; + musb_writew(cppi41_channel->hw_ep->regs, MUSB_RXCSR, csr); + dev_dbg(cppi41_channel->controller->musb->controller, + "Restoring DATA1 toggle.\n"); + } + + cppi41_channel->usb_toggle = toggle; +} + +static void cppi41_dma_callback(void *private_data) +{ + struct dma_channel *channel = private_data; + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + struct musb_hw_ep *hw_ep = cppi41_channel->hw_ep; + struct musb *musb = hw_ep->musb; + unsigned long flags; + struct dma_tx_state txstate; + u32 transferred; + + spin_lock_irqsave(&musb->lock, flags); + + dmaengine_tx_status(cppi41_channel->dc, cppi41_channel->cookie, + &txstate); + transferred = cppi41_channel->prog_len - txstate.residue; + cppi41_channel->transferred += transferred; + + dev_dbg(musb->controller, "DMA transfer done on hw_ep=%d bytes=%d/%d\n", + hw_ep->epnum, cppi41_channel->transferred, + cppi41_channel->total_len); + + update_rx_toggle(cppi41_channel); + + if (cppi41_channel->transferred == cppi41_channel->total_len || + transferred < cppi41_channel->packet_sz) { + + /* done, complete */ + cppi41_channel->channel.actual_len = + cppi41_channel->transferred; + cppi41_channel->channel.status = MUSB_DMA_STATUS_FREE; + musb_dma_completion(musb, hw_ep->epnum, cppi41_channel->is_tx); + } else { + /* next iteration, reload */ + struct dma_chan *dc = cppi41_channel->dc; + struct dma_async_tx_descriptor *dma_desc; + enum dma_transfer_direction direction; + u16 csr; + u32 remain_bytes; + void __iomem *epio = cppi41_channel->hw_ep->regs; + + cppi41_channel->buf_addr += cppi41_channel->packet_sz; + + remain_bytes = cppi41_channel->total_len; + remain_bytes -= cppi41_channel->transferred; + remain_bytes = min(remain_bytes, cppi41_channel->packet_sz); + cppi41_channel->prog_len = remain_bytes; + + direction = cppi41_channel->is_tx ? DMA_MEM_TO_DEV + : DMA_DEV_TO_MEM; + dma_desc = dmaengine_prep_slave_single(dc, + cppi41_channel->buf_addr, + remain_bytes, + direction, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (WARN_ON(!dma_desc)) { + spin_unlock_irqrestore(&musb->lock, flags); + return; + } + + dma_desc->callback = cppi41_dma_callback; + dma_desc->callback_param = channel; + cppi41_channel->cookie = dma_desc->tx_submit(dma_desc); + dma_async_issue_pending(dc); + + if (!cppi41_channel->is_tx) { + csr = musb_readw(epio, MUSB_RXCSR); + csr |= MUSB_RXCSR_H_REQPKT; + musb_writew(epio, MUSB_RXCSR, csr); + } + } + spin_unlock_irqrestore(&musb->lock, flags); +} + +static u32 update_ep_mode(unsigned ep, unsigned mode, u32 old) +{ + unsigned shift; + + shift = (ep - 1) * 2; + old &= ~(3 << shift); + old |= mode << shift; + return old; +} + +static void cppi41_set_dma_mode(struct cppi41_dma_channel *cppi41_channel, + unsigned mode) +{ + struct cppi41_dma_controller *controller = cppi41_channel->controller; + u32 port; + u32 new_mode; + u32 old_mode; + + if (cppi41_channel->is_tx) + old_mode = controller->tx_mode; + else + old_mode = controller->rx_mode; + port = cppi41_channel->port_num; + new_mode = update_ep_mode(port, mode, old_mode); + + if (new_mode == old_mode) + return; + if (cppi41_channel->is_tx) { + controller->tx_mode = new_mode; + musb_writel(controller->musb->ctrl_base, USB_CTRL_TX_MODE, + new_mode); + } else { + controller->rx_mode = new_mode; + musb_writel(controller->musb->ctrl_base, USB_CTRL_RX_MODE, + new_mode); + } +} + +static void cppi41_set_autoreq_mode(struct cppi41_dma_channel *cppi41_channel, + unsigned mode) +{ + struct cppi41_dma_controller *controller = cppi41_channel->controller; + u32 port; + u32 new_mode; + u32 old_mode; + + old_mode = controller->auto_req; + port = cppi41_channel->port_num; + new_mode = update_ep_mode(port, mode, old_mode); + + if (new_mode == old_mode) + return; + controller->auto_req = new_mode; + musb_writel(controller->musb->ctrl_base, USB_CTRL_AUTOREQ, new_mode); +} + +static bool cppi41_configure_channel(struct dma_channel *channel, + u16 packet_sz, u8 mode, + dma_addr_t dma_addr, u32 len) +{ + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + struct dma_chan *dc = cppi41_channel->dc; + struct dma_async_tx_descriptor *dma_desc; + enum dma_transfer_direction direction; + struct musb *musb = cppi41_channel->controller->musb; + unsigned use_gen_rndis = 0; + + dev_dbg(musb->controller, + "configure ep%d/%x packet_sz=%d, mode=%d, dma_addr=0x%llx, len=%d is_tx=%d\n", + cppi41_channel->port_num, RNDIS_REG(cppi41_channel->port_num), + packet_sz, mode, (unsigned long long) dma_addr, + len, cppi41_channel->is_tx); + + cppi41_channel->buf_addr = dma_addr; + cppi41_channel->total_len = len; + cppi41_channel->transferred = 0; + cppi41_channel->packet_sz = packet_sz; + + /* + * Due to AM335x' Advisory 1.0.13 we are not allowed to transfer more + * than max packet size at a time. + */ + if (cppi41_channel->is_tx) + use_gen_rndis = 1; + + if (use_gen_rndis) { + /* RNDIS mode */ + if (len > packet_sz) { + musb_writel(musb->ctrl_base, + RNDIS_REG(cppi41_channel->port_num), len); + /* gen rndis */ + cppi41_set_dma_mode(cppi41_channel, + EP_MODE_DMA_GEN_RNDIS); + + /* auto req */ + cppi41_set_autoreq_mode(cppi41_channel, + EP_MODE_AUTOREG_ALL_NEOP); + } else { + musb_writel(musb->ctrl_base, + RNDIS_REG(cppi41_channel->port_num), 0); + cppi41_set_dma_mode(cppi41_channel, + EP_MODE_DMA_TRANSPARENT); + cppi41_set_autoreq_mode(cppi41_channel, + EP_MODE_AUTOREG_NONE); + } + } else { + /* fallback mode */ + cppi41_set_dma_mode(cppi41_channel, EP_MODE_DMA_TRANSPARENT); + cppi41_set_autoreq_mode(cppi41_channel, EP_MODE_AUTOREG_NONE); + len = min_t(u32, packet_sz, len); + } + cppi41_channel->prog_len = len; + direction = cppi41_channel->is_tx ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM; + dma_desc = dmaengine_prep_slave_single(dc, dma_addr, len, direction, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!dma_desc) + return false; + + dma_desc->callback = cppi41_dma_callback; + dma_desc->callback_param = channel; + cppi41_channel->cookie = dma_desc->tx_submit(dma_desc); + + save_rx_toggle(cppi41_channel); + dma_async_issue_pending(dc); + return true; +} + +static struct dma_channel *cppi41_dma_channel_allocate(struct dma_controller *c, + struct musb_hw_ep *hw_ep, u8 is_tx) +{ + struct cppi41_dma_controller *controller = container_of(c, + struct cppi41_dma_controller, controller); + struct cppi41_dma_channel *cppi41_channel = NULL; + u8 ch_num = hw_ep->epnum - 1; + + if (ch_num >= MUSB_DMA_NUM_CHANNELS) + return NULL; + + if (is_tx) + cppi41_channel = &controller->tx_channel[ch_num]; + else + cppi41_channel = &controller->rx_channel[ch_num]; + + if (!cppi41_channel->dc) + return NULL; + + if (cppi41_channel->is_allocated) + return NULL; + + cppi41_channel->hw_ep = hw_ep; + cppi41_channel->is_allocated = 1; + + return &cppi41_channel->channel; +} + +static void cppi41_dma_channel_release(struct dma_channel *channel) +{ + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + + if (cppi41_channel->is_allocated) { + cppi41_channel->is_allocated = 0; + channel->status = MUSB_DMA_STATUS_FREE; + channel->actual_len = 0; + } +} + +static int cppi41_dma_channel_program(struct dma_channel *channel, + u16 packet_sz, u8 mode, + dma_addr_t dma_addr, u32 len) +{ + int ret; + + BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN || + channel->status == MUSB_DMA_STATUS_BUSY); + + channel->status = MUSB_DMA_STATUS_BUSY; + channel->actual_len = 0; + ret = cppi41_configure_channel(channel, packet_sz, mode, dma_addr, len); + if (!ret) + channel->status = MUSB_DMA_STATUS_FREE; + + return ret; +} + +static int cppi41_is_compatible(struct dma_channel *channel, u16 maxpacket, + void *buf, u32 length) +{ + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + struct cppi41_dma_controller *controller = cppi41_channel->controller; + struct musb *musb = controller->musb; + + if (is_host_active(musb)) { + WARN_ON(1); + return 1; + } + if (cppi41_channel->is_tx) + return 1; + /* AM335x Advisory 1.0.13. No workaround for device RX mode */ + return 0; +} + +static int cppi41_dma_channel_abort(struct dma_channel *channel) +{ + struct cppi41_dma_channel *cppi41_channel = channel->private_data; + struct cppi41_dma_controller *controller = cppi41_channel->controller; + struct musb *musb = controller->musb; + void __iomem *epio = cppi41_channel->hw_ep->regs; + int tdbit; + int ret; + unsigned is_tx; + u16 csr; + + is_tx = cppi41_channel->is_tx; + dev_dbg(musb->controller, "abort channel=%d, is_tx=%d\n", + cppi41_channel->port_num, is_tx); + + if (cppi41_channel->channel.status == MUSB_DMA_STATUS_FREE) + return 0; + + if (is_tx) { + csr = musb_readw(epio, MUSB_TXCSR); + csr &= ~MUSB_TXCSR_DMAENAB; + musb_writew(epio, MUSB_TXCSR, csr); + } else { + csr = musb_readw(epio, MUSB_RXCSR); + csr &= ~(MUSB_RXCSR_H_REQPKT | MUSB_RXCSR_DMAENAB); + musb_writew(epio, MUSB_RXCSR, csr); + + csr = musb_readw(epio, MUSB_RXCSR); + if (csr & MUSB_RXCSR_RXPKTRDY) { + csr |= MUSB_RXCSR_FLUSHFIFO; + musb_writew(epio, MUSB_RXCSR, csr); + musb_writew(epio, MUSB_RXCSR, csr); + } + } + + tdbit = 1 << cppi41_channel->port_num; + if (is_tx) + tdbit <<= 16; + + do { + musb_writel(musb->ctrl_base, USB_TDOWN, tdbit); + ret = dmaengine_terminate_all(cppi41_channel->dc); + } while (ret == -EAGAIN); + + musb_writel(musb->ctrl_base, USB_TDOWN, tdbit); + + if (is_tx) { + csr = musb_readw(epio, MUSB_TXCSR); + if (csr & MUSB_TXCSR_TXPKTRDY) { + csr |= MUSB_TXCSR_FLUSHFIFO; + musb_writew(epio, MUSB_TXCSR, csr); + } + } + + cppi41_channel->channel.status = MUSB_DMA_STATUS_FREE; + return 0; +} + +static void cppi41_release_all_dma_chans(struct cppi41_dma_controller *ctrl) +{ + struct dma_chan *dc; + int i; + + for (i = 0; i < MUSB_DMA_NUM_CHANNELS; i++) { + dc = ctrl->tx_channel[i].dc; + if (dc) + dma_release_channel(dc); + dc = ctrl->rx_channel[i].dc; + if (dc) + dma_release_channel(dc); + } +} + +static void cppi41_dma_controller_stop(struct cppi41_dma_controller *controller) +{ + cppi41_release_all_dma_chans(controller); +} + +static int cppi41_dma_controller_start(struct cppi41_dma_controller *controller) +{ + struct musb *musb = controller->musb; + struct device *dev = musb->controller; + struct device_node *np = dev->of_node; + struct cppi41_dma_channel *cppi41_channel; + int count; + int i; + int ret; + + count = of_property_count_strings(np, "dma-names"); + if (count < 0) + return count; + + for (i = 0; i < count; i++) { + struct dma_chan *dc; + struct dma_channel *musb_dma; + const char *str; + unsigned is_tx; + unsigned int port; + + ret = of_property_read_string_index(np, "dma-names", i, &str); + if (ret) + goto err; + if (!strncmp(str, "tx", 2)) + is_tx = 1; + else if (!strncmp(str, "rx", 2)) + is_tx = 0; + else { + dev_err(dev, "Wrong dmatype %s\n", str); + goto err; + } + ret = kstrtouint(str + 2, 0, &port); + if (ret) + goto err; + + if (port > MUSB_DMA_NUM_CHANNELS || !port) + goto err; + if (is_tx) + cppi41_channel = &controller->tx_channel[port - 1]; + else + cppi41_channel = &controller->rx_channel[port - 1]; + + cppi41_channel->controller = controller; + cppi41_channel->port_num = port; + cppi41_channel->is_tx = is_tx; + + musb_dma = &cppi41_channel->channel; + musb_dma->private_data = cppi41_channel; + musb_dma->status = MUSB_DMA_STATUS_FREE; + musb_dma->max_len = SZ_4M; + + dc = dma_request_slave_channel(dev, str); + if (!dc) { + dev_err(dev, "Falied to request %s.\n", str); + goto err; + } + cppi41_channel->dc = dc; + } + return 0; +err: + cppi41_release_all_dma_chans(controller); + return -EINVAL; +} + +void dma_controller_destroy(struct dma_controller *c) +{ + struct cppi41_dma_controller *controller = container_of(c, + struct cppi41_dma_controller, controller); + + cppi41_dma_controller_stop(controller); + kfree(controller); +} + +struct dma_controller *dma_controller_create(struct musb *musb, + void __iomem *base) +{ + struct cppi41_dma_controller *controller; + int ret; + + if (!musb->controller->of_node) { + dev_err(musb->controller, "Need DT for the DMA engine.\n"); + return NULL; + } + + controller = kzalloc(sizeof(*controller), GFP_KERNEL); + if (!controller) + goto kzalloc_fail; + + controller->musb = musb; + + controller->controller.channel_alloc = cppi41_dma_channel_allocate; + controller->controller.channel_release = cppi41_dma_channel_release; + controller->controller.channel_program = cppi41_dma_channel_program; + controller->controller.channel_abort = cppi41_dma_channel_abort; + controller->controller.is_compatible = cppi41_is_compatible; + + ret = cppi41_dma_controller_start(controller); + if (ret) + goto plat_get_fail; + return &controller->controller; + +plat_get_fail: + kfree(controller); +kzalloc_fail: + return NULL; +} diff --git a/drivers/usb/musb/musb_dma.h b/drivers/usb/musb/musb_dma.h index 1b6b827b769f..1345a4ff041a 100644 --- a/drivers/usb/musb/musb_dma.h +++ b/drivers/usb/musb/musb_dma.h @@ -62,13 +62,13 @@ struct musb_hw_ep; #define DMA_ADDR_INVALID (~(dma_addr_t)0) -#ifndef CONFIG_MUSB_PIO_ONLY -#define is_dma_capable() (1) -#else +#ifdef CONFIG_MUSB_PIO_ONLY #define is_dma_capable() (0) +#else +#define is_dma_capable() (1) #endif -#ifdef CONFIG_USB_TI_CPPI_DMA +#if defined(CONFIG_USB_TI_CPPI_DMA) || defined(CONFIG_USB_TI_CPPI41_DMA) #define is_cppi_enabled() 1 #else #define is_cppi_enabled() 0 @@ -159,8 +159,6 @@ dma_channel_status(struct dma_channel *c) * Controllers manage dma channels. */ struct dma_controller { - int (*start)(struct dma_controller *); - int (*stop)(struct dma_controller *); struct dma_channel *(*channel_alloc)(struct dma_controller *, struct musb_hw_ep *, u8 is_tx); void (*channel_release)(struct dma_channel *); @@ -177,9 +175,20 @@ struct dma_controller { /* called after channel_program(), may indicate a fault */ extern void musb_dma_completion(struct musb *musb, u8 epnum, u8 transmit); +#ifdef CONFIG_MUSB_PIO_ONLY +static inline struct dma_controller *dma_controller_create(struct musb *m, + void __iomem *io) +{ + return NULL; +} + +static inline void dma_controller_destroy(struct dma_controller *d) { } + +#else extern struct dma_controller *dma_controller_create(struct musb *, void __iomem *); extern void dma_controller_destroy(struct dma_controller *); +#endif #endif /* __MUSB_DMA_H__ */ diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index e1b661d04021..4047cbb91bac 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -36,19 +36,19 @@ #include <linux/dma-mapping.h> #include <linux/pm_runtime.h> #include <linux/module.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_gen_xceiv.h> #include <linux/platform_data/usb-omap.h> #include <linux/sizes.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/usb/of.h> #include "musb_core.h" -#ifdef CONFIG_OF static const struct of_device_id musb_dsps_of_match[]; -#endif /** * avoid using musb_readx()/musb_writex() as glue layer should not be @@ -75,7 +75,6 @@ struct dsps_musb_wrapper { u16 revision; u16 control; u16 status; - u16 eoi; u16 epintr_set; u16 epintr_clear; u16 epintr_status; @@ -108,10 +107,7 @@ struct dsps_musb_wrapper { /* bit positions for mode */ unsigned iddig:5; /* miscellaneous stuff */ - u32 musb_core_offset; u8 poll_seconds; - /* number of musb instances */ - u8 instances; }; /** @@ -119,53 +115,12 @@ struct dsps_musb_wrapper { */ struct dsps_glue { struct device *dev; - struct platform_device *musb[2]; /* child musb pdev */ + struct platform_device *musb; /* child musb pdev */ const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ - struct timer_list timer[2]; /* otg_workaround timer */ - unsigned long last_timer[2]; /* last timer data for each instance */ - u32 __iomem *usb_ctrl[2]; + struct timer_list timer; /* otg_workaround timer */ + unsigned long last_timer; /* last timer data for each instance */ }; -#define DSPS_AM33XX_CONTROL_MODULE_PHYS_0 0x44e10620 -#define DSPS_AM33XX_CONTROL_MODULE_PHYS_1 0x44e10628 - -static const resource_size_t dsps_control_module_phys[] = { - DSPS_AM33XX_CONTROL_MODULE_PHYS_0, - DSPS_AM33XX_CONTROL_MODULE_PHYS_1, -}; - -#define USBPHY_CM_PWRDN (1 << 0) -#define USBPHY_OTG_PWRDN (1 << 1) -#define USBPHY_OTGVDET_EN (1 << 19) -#define USBPHY_OTGSESSEND_EN (1 << 20) - -/** - * musb_dsps_phy_control - phy on/off - * @glue: struct dsps_glue * - * @id: musb instance - * @on: flag for phy to be switched on or off - * - * This is to enable the PHY using usb_ctrl register in system control - * module space. - * - * XXX: This function will be removed once we have a seperate driver for - * control module - */ -static void musb_dsps_phy_control(struct dsps_glue *glue, u8 id, u8 on) -{ - u32 usbphycfg; - - usbphycfg = readl(glue->usb_ctrl[id]); - - if (on) { - usbphycfg &= ~(USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN); - usbphycfg |= USBPHY_OTGVDET_EN | USBPHY_OTGSESSEND_EN; - } else { - usbphycfg |= USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN; - } - - writel(usbphycfg, glue->usb_ctrl[id]); -} /** * dsps_musb_enable - enable interrupts */ @@ -205,7 +160,6 @@ static void dsps_musb_disable(struct musb *musb) dsps_writel(reg_base, wrp->epintr_clear, wrp->txep_bitmap | wrp->rxep_bitmap); dsps_writeb(musb->mregs, MUSB_DEVCTL, 0); - dsps_writel(reg_base, wrp->eoi, 0); } static void otg_timer(unsigned long _musb) @@ -213,7 +167,6 @@ static void otg_timer(unsigned long _musb) struct musb *musb = (void *)_musb; void __iomem *mregs = musb->mregs; struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); const struct dsps_musb_wrapper *wrp = glue->wrp; u8 devctl; @@ -250,7 +203,7 @@ static void otg_timer(unsigned long _musb) case OTG_STATE_B_IDLE: devctl = dsps_readb(mregs, MUSB_DEVCTL); if (devctl & MUSB_DEVCTL_BDEVICE) - mod_timer(&glue->timer[pdev->id], + mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); else musb->xceiv->state = OTG_STATE_A_IDLE; @@ -264,7 +217,6 @@ static void otg_timer(unsigned long _musb) static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) { struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); if (timeout == 0) @@ -275,23 +227,25 @@ static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { dev_dbg(musb->controller, "%s active, deleting timer\n", usb_otg_state_string(musb->xceiv->state)); - del_timer(&glue->timer[pdev->id]); - glue->last_timer[pdev->id] = jiffies; + del_timer(&glue->timer); + glue->last_timer = jiffies; return; } + if (musb->port_mode == MUSB_PORT_MODE_HOST) + return; - if (time_after(glue->last_timer[pdev->id], timeout) && - timer_pending(&glue->timer[pdev->id])) { + if (time_after(glue->last_timer, timeout) && + timer_pending(&glue->timer)) { dev_dbg(musb->controller, "Longer idle timer already pending, ignoring...\n"); return; } - glue->last_timer[pdev->id] = timeout; + glue->last_timer = timeout; dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", usb_otg_state_string(musb->xceiv->state), jiffies_to_msecs(timeout - jiffies)); - mod_timer(&glue->timer[pdev->id], timeout); + mod_timer(&glue->timer, timeout); } static irqreturn_t dsps_interrupt(int irq, void *hci) @@ -299,7 +253,6 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) struct musb *musb = hci; void __iomem *reg_base = musb->ctrl_base; struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); const struct dsps_musb_wrapper *wrp = glue->wrp; unsigned long flags; @@ -319,7 +272,7 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) /* Get usb core interrupts */ usbintr = dsps_readl(reg_base, wrp->coreintr_status); if (!usbintr && !epintr) - goto eoi; + goto out; musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift; if (usbintr) @@ -359,15 +312,14 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) */ musb->int_usb &= ~MUSB_INTR_VBUSERROR; musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; - mod_timer(&glue->timer[pdev->id], + mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); WARNING("VBUS error workaround (delay coming)\n"); } else if (drvvbus) { - musb->is_active = 1; MUSB_HST_MODE(musb); musb->xceiv->otg->default_a = 1; musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; - del_timer(&glue->timer[pdev->id]); + del_timer(&glue->timer); } else { musb->is_active = 0; MUSB_DEV_MODE(musb); @@ -387,16 +339,10 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) if (musb->int_tx || musb->int_rx || musb->int_usb) ret |= musb_interrupt(musb); - eoi: - /* EOI needs to be written for the IRQ to be re-asserted. */ - if (ret == IRQ_HANDLED || epintr || usbintr) - dsps_writel(reg_base, wrp->eoi, 1); - /* Poll for ID change */ if (musb->xceiv->state == OTG_STATE_B_IDLE) - mod_timer(&glue->timer[pdev->id], - jiffies + wrp->poll_seconds * HZ); - + mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); +out: spin_unlock_irqrestore(&musb->lock, flags); return ret; @@ -405,37 +351,38 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) static int dsps_musb_init(struct musb *musb) { struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); + struct platform_device *parent = to_platform_device(dev->parent); const struct dsps_musb_wrapper *wrp = glue->wrp; - void __iomem *reg_base = musb->ctrl_base; + void __iomem *reg_base; + struct resource *r; u32 rev, val; - int status; - /* mentor core register starts at offset of 0x400 from musb base */ - musb->mregs += wrp->musb_core_offset; + r = platform_get_resource_byname(parent, IORESOURCE_MEM, "control"); + if (!r) + return -EINVAL; + + reg_base = devm_ioremap_resource(dev, r); + if (IS_ERR(reg_base)) + return PTR_ERR(reg_base); + musb->ctrl_base = reg_base; /* NOP driver needs change if supporting dual instance */ - usb_nop_xceiv_register(); - musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); - if (IS_ERR_OR_NULL(musb->xceiv)) - return -EPROBE_DEFER; + musb->xceiv = devm_usb_get_phy_by_phandle(dev, "phys", 0); + if (IS_ERR(musb->xceiv)) + return PTR_ERR(musb->xceiv); /* Returns zero if e.g. not clocked */ rev = dsps_readl(reg_base, wrp->revision); - if (!rev) { - status = -ENODEV; - goto err0; - } + if (!rev) + return -ENODEV; - setup_timer(&glue->timer[pdev->id], otg_timer, (unsigned long) musb); + usb_phy_init(musb->xceiv); + setup_timer(&glue->timer, otg_timer, (unsigned long) musb); /* Reset the musb */ dsps_writel(reg_base, wrp->control, (1 << wrp->reset)); - /* Start the on-chip PHY and its PLL. */ - musb_dsps_phy_control(glue, pdev->id, 1); - musb->isr = dsps_interrupt; /* reset the otgdisable bit, needed for host mode to work */ @@ -443,31 +390,17 @@ static int dsps_musb_init(struct musb *musb) val &= ~(1 << wrp->otg_disable); dsps_writel(musb->ctrl_base, wrp->phy_utmi, val); - /* clear level interrupt */ - dsps_writel(reg_base, wrp->eoi, 0); - return 0; -err0: - usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); - return status; } static int dsps_musb_exit(struct musb *musb) { struct device *dev = musb->controller; - struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); - del_timer_sync(&glue->timer[pdev->id]); - - /* Shutdown the on-chip PHY and its PLL. */ - musb_dsps_phy_control(glue, pdev->id, 0); - - /* NOP driver needs change if supporting dual instance */ - usb_put_phy(musb->xceiv); - usb_nop_xceiv_unregister(); + del_timer_sync(&glue->timer); + usb_phy_shutdown(musb->xceiv); return 0; } @@ -483,116 +416,115 @@ static struct musb_platform_ops dsps_ops = { static u64 musb_dmamask = DMA_BIT_MASK(32); -static int dsps_create_musb_pdev(struct dsps_glue *glue, u8 id) +static int get_int_prop(struct device_node *dn, const char *s) { - struct device *dev = glue->dev; - struct platform_device *pdev = to_platform_device(dev); - struct musb_hdrc_platform_data *pdata = dev->platform_data; - struct device_node *np = pdev->dev.of_node; - struct musb_hdrc_config *config; - struct platform_device *musb; - struct resource *res; - struct resource resources[2]; - char res_name[11]; int ret; + u32 val; - resources[0].start = dsps_control_module_phys[id]; - resources[0].end = resources[0].start + SZ_4 - 1; - resources[0].flags = IORESOURCE_MEM; + ret = of_property_read_u32(dn, s, &val); + if (ret) + return 0; + return val; +} - glue->usb_ctrl[id] = devm_ioremap_resource(&pdev->dev, resources); - if (IS_ERR(glue->usb_ctrl[id])) { - ret = PTR_ERR(glue->usb_ctrl[id]); - goto err0; - } +static int get_musb_port_mode(struct device *dev) +{ + enum usb_dr_mode mode; + + mode = of_usb_get_dr_mode(dev->of_node); + switch (mode) { + case USB_DR_MODE_HOST: + return MUSB_PORT_MODE_HOST; + + case USB_DR_MODE_PERIPHERAL: + return MUSB_PORT_MODE_GADGET; + + case USB_DR_MODE_UNKNOWN: + case USB_DR_MODE_OTG: + default: + return MUSB_PORT_MODE_DUAL_ROLE; + }; +} + +static int dsps_create_musb_pdev(struct dsps_glue *glue, + struct platform_device *parent) +{ + struct musb_hdrc_platform_data pdata; + struct resource resources[2]; + struct resource *res; + struct device *dev = &parent->dev; + struct musb_hdrc_config *config; + struct platform_device *musb; + struct device_node *dn = parent->dev.of_node; + int ret; - /* first resource is for usbss, so start index from 1 */ - res = platform_get_resource(pdev, IORESOURCE_MEM, id + 1); + memset(resources, 0, sizeof(resources)); + res = platform_get_resource_byname(parent, IORESOURCE_MEM, "mc"); if (!res) { - dev_err(dev, "failed to get memory for instance %d\n", id); - ret = -ENODEV; - goto err0; + dev_err(dev, "failed to get memory.\n"); + return -EINVAL; } - res->parent = NULL; resources[0] = *res; - /* first resource is for usbss, so start index from 1 */ - res = platform_get_resource(pdev, IORESOURCE_IRQ, id + 1); + res = platform_get_resource_byname(parent, IORESOURCE_IRQ, "mc"); if (!res) { - dev_err(dev, "failed to get irq for instance %d\n", id); - ret = -ENODEV; - goto err0; + dev_err(dev, "failed to get irq.\n"); + return -EINVAL; } - res->parent = NULL; resources[1] = *res; - resources[1].name = "mc"; /* allocate the child platform device */ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); if (!musb) { dev_err(dev, "failed to allocate musb device\n"); - ret = -ENOMEM; - goto err0; + return -ENOMEM; } musb->dev.parent = dev; musb->dev.dma_mask = &musb_dmamask; musb->dev.coherent_dma_mask = musb_dmamask; + musb->dev.of_node = of_node_get(dn); - glue->musb[id] = musb; + glue->musb = musb; - ret = platform_device_add_resources(musb, resources, 2); + ret = platform_device_add_resources(musb, resources, + ARRAY_SIZE(resources)); if (ret) { dev_err(dev, "failed to add resources\n"); - goto err2; + goto err; } - if (np) { - pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) { - dev_err(&pdev->dev, - "failed to allocate musb platfrom data\n"); - ret = -ENOMEM; - goto err2; - } - - config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); - if (!config) { - dev_err(&pdev->dev, - "failed to allocate musb hdrc config\n"); - ret = -ENOMEM; - goto err2; - } - - of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); - of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits); - snprintf(res_name, sizeof(res_name), "port%d-mode", id); - of_property_read_u32(np, res_name, (u32 *)&pdata->mode); - of_property_read_u32(np, "power", (u32 *)&pdata->power); - config->multipoint = of_property_read_bool(np, "multipoint"); - - pdata->config = config; + config = devm_kzalloc(&parent->dev, sizeof(*config), GFP_KERNEL); + if (!config) { + dev_err(dev, "failed to allocate musb hdrc config\n"); + ret = -ENOMEM; + goto err; } + pdata.config = config; + pdata.platform_ops = &dsps_ops; - pdata->platform_ops = &dsps_ops; + config->num_eps = get_int_prop(dn, "mentor,num-eps"); + config->ram_bits = get_int_prop(dn, "mentor,ram-bits"); + pdata.mode = get_musb_port_mode(dev); + /* DT keeps this entry in mA, musb expects it as per USB spec */ + pdata.power = get_int_prop(dn, "mentor,power") / 2; + config->multipoint = of_property_read_bool(dn, "mentor,multipoint"); - ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); + ret = platform_device_add_data(musb, &pdata, sizeof(pdata)); if (ret) { dev_err(dev, "failed to add platform_data\n"); - goto err2; + goto err; } ret = platform_device_add(musb); if (ret) { dev_err(dev, "failed to register musb device\n"); - goto err2; + goto err; } - return 0; -err2: +err: platform_device_put(musb); -err0: return ret; } @@ -601,14 +533,12 @@ static int dsps_probe(struct platform_device *pdev) const struct of_device_id *match; const struct dsps_musb_wrapper *wrp; struct dsps_glue *glue; - struct resource *iomem; - int ret, i; + int ret; match = of_match_node(musb_dsps_of_match, pdev->dev.of_node); if (!match) { dev_err(&pdev->dev, "fail to get matching of_match struct\n"); - ret = -EINVAL; - goto err0; + return -EINVAL; } wrp = match->data; @@ -616,29 +546,13 @@ static int dsps_probe(struct platform_device *pdev) glue = kzalloc(sizeof(*glue), GFP_KERNEL); if (!glue) { dev_err(&pdev->dev, "unable to allocate glue memory\n"); - ret = -ENOMEM; - goto err0; - } - - /* get memory resource */ - iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!iomem) { - dev_err(&pdev->dev, "failed to get usbss mem resourse\n"); - ret = -ENODEV; - goto err1; + return -ENOMEM; } glue->dev = &pdev->dev; + glue->wrp = wrp; - glue->wrp = kmemdup(wrp, sizeof(*wrp), GFP_KERNEL); - if (!glue->wrp) { - dev_err(&pdev->dev, "failed to duplicate wrapper struct memory\n"); - ret = -ENOMEM; - goto err1; - } platform_set_drvdata(pdev, glue); - - /* enable the usbss clocks */ pm_runtime_enable(&pdev->dev); ret = pm_runtime_get_sync(&pdev->dev); @@ -647,17 +561,9 @@ static int dsps_probe(struct platform_device *pdev) goto err2; } - /* create the child platform device for all instances of musb */ - for (i = 0; i < wrp->instances ; i++) { - ret = dsps_create_musb_pdev(glue, i); - if (ret != 0) { - dev_err(&pdev->dev, "failed to create child pdev\n"); - /* release resources of previously created instances */ - for (i--; i >= 0 ; i--) - platform_device_unregister(glue->musb[i]); - goto err3; - } - } + ret = dsps_create_musb_pdev(glue, pdev); + if (ret) + goto err3; return 0; @@ -665,65 +571,27 @@ err3: pm_runtime_put(&pdev->dev); err2: pm_runtime_disable(&pdev->dev); - kfree(glue->wrp); -err1: kfree(glue); -err0: return ret; } + static int dsps_remove(struct platform_device *pdev) { struct dsps_glue *glue = platform_get_drvdata(pdev); - const struct dsps_musb_wrapper *wrp = glue->wrp; - int i; - /* delete the child platform device */ - for (i = 0; i < wrp->instances ; i++) - platform_device_unregister(glue->musb[i]); + platform_device_unregister(glue->musb); /* disable usbss clocks */ pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); - kfree(glue->wrp); kfree(glue); return 0; } -#ifdef CONFIG_PM_SLEEP -static int dsps_suspend(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev->parent); - struct dsps_glue *glue = platform_get_drvdata(pdev); - const struct dsps_musb_wrapper *wrp = glue->wrp; - int i; - - for (i = 0; i < wrp->instances; i++) - musb_dsps_phy_control(glue, i, 0); - - return 0; -} - -static int dsps_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev->parent); - struct dsps_glue *glue = platform_get_drvdata(pdev); - const struct dsps_musb_wrapper *wrp = glue->wrp; - int i; - - for (i = 0; i < wrp->instances; i++) - musb_dsps_phy_control(glue, i, 1); - - return 0; -} -#endif - -static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume); - -static const struct dsps_musb_wrapper ti81xx_driver_data = { +static const struct dsps_musb_wrapper am33xx_driver_data = { .revision = 0x00, .control = 0x14, .status = 0x18, - .eoi = 0x24, .epintr_set = 0x38, .epintr_clear = 0x40, .epintr_status = 0x30, @@ -745,38 +613,23 @@ static const struct dsps_musb_wrapper ti81xx_driver_data = { .rxep_shift = 16, .rxep_mask = 0xfffe, .rxep_bitmap = (0xfffe << 16), - .musb_core_offset = 0x400, .poll_seconds = 2, - .instances = 1, -}; - -static const struct platform_device_id musb_dsps_id_table[] = { - { - .name = "musb-ti81xx", - .driver_data = (kernel_ulong_t) &ti81xx_driver_data, - }, - { }, /* Terminating Entry */ }; -MODULE_DEVICE_TABLE(platform, musb_dsps_id_table); -#ifdef CONFIG_OF static const struct of_device_id musb_dsps_of_match[] = { { .compatible = "ti,musb-am33xx", - .data = (void *) &ti81xx_driver_data, }, + .data = (void *) &am33xx_driver_data, }, { }, }; MODULE_DEVICE_TABLE(of, musb_dsps_of_match); -#endif static struct platform_driver dsps_usbss_driver = { .probe = dsps_probe, .remove = dsps_remove, .driver = { .name = "musb-dsps", - .pm = &dsps_pm_ops, .of_match_table = of_match_ptr(musb_dsps_of_match), }, - .id_table = musb_dsps_id_table, }; MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer"); @@ -784,14 +637,4 @@ MODULE_AUTHOR("Ravi B <ravibabu@ti.com>"); MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>"); MODULE_LICENSE("GPL v2"); -static int __init dsps_init(void) -{ - return platform_driver_register(&dsps_usbss_driver); -} -subsys_initcall(dsps_init); - -static void __exit dsps_exit(void) -{ - platform_driver_unregister(&dsps_usbss_driver); -} -module_exit(dsps_exit); +module_platform_driver(dsps_usbss_driver); diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index ba7092349fa9..9a08679d204d 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -76,13 +76,21 @@ static inline void map_dma_buffer(struct musb_request *request, return; if (request->request.dma == DMA_ADDR_INVALID) { - request->request.dma = dma_map_single( + dma_addr_t dma_addr; + int ret; + + dma_addr = dma_map_single( musb->controller, request->request.buf, request->request.length, request->tx ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + ret = dma_mapping_error(musb->controller, dma_addr); + if (ret) + return; + + request->request.dma = dma_addr; request->map_state = MUSB_MAPPED; } else { dma_sync_single_for_device(musb->controller, @@ -357,47 +365,49 @@ static void txstate(struct musb *musb, struct musb_request *req) } } -#elif defined(CONFIG_USB_TI_CPPI_DMA) - /* program endpoint CSR first, then setup DMA */ - csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY); - csr |= MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE | - MUSB_TXCSR_MODE; - musb_writew(epio, MUSB_TXCSR, - (MUSB_TXCSR_P_WZC_BITS & ~MUSB_TXCSR_P_UNDERRUN) - | csr); - - /* ensure writebuffer is empty */ - csr = musb_readw(epio, MUSB_TXCSR); - - /* NOTE host side sets DMAENAB later than this; both are - * OK since the transfer dma glue (between CPPI and Mentor - * fifos) just tells CPPI it could start. Data only moves - * to the USB TX fifo when both fifos are ready. - */ - - /* "mode" is irrelevant here; handle terminating ZLPs like - * PIO does, since the hardware RNDIS mode seems unreliable - * except for the last-packet-is-already-short case. - */ - use_dma = use_dma && c->channel_program( - musb_ep->dma, musb_ep->packet_sz, - 0, - request->dma + request->actual, - request_size); - if (!use_dma) { - c->channel_release(musb_ep->dma); - musb_ep->dma = NULL; - csr &= ~MUSB_TXCSR_DMAENAB; - musb_writew(epio, MUSB_TXCSR, csr); - /* invariant: prequest->buf is non-null */ - } -#elif defined(CONFIG_USB_TUSB_OMAP_DMA) - use_dma = use_dma && c->channel_program( - musb_ep->dma, musb_ep->packet_sz, - request->zero, - request->dma + request->actual, - request_size); #endif + if (is_cppi_enabled()) { + /* program endpoint CSR first, then setup DMA */ + csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY); + csr |= MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE | + MUSB_TXCSR_MODE; + musb_writew(epio, MUSB_TXCSR, (MUSB_TXCSR_P_WZC_BITS & + ~MUSB_TXCSR_P_UNDERRUN) | csr); + + /* ensure writebuffer is empty */ + csr = musb_readw(epio, MUSB_TXCSR); + + /* + * NOTE host side sets DMAENAB later than this; both are + * OK since the transfer dma glue (between CPPI and + * Mentor fifos) just tells CPPI it could start. Data + * only moves to the USB TX fifo when both fifos are + * ready. + */ + /* + * "mode" is irrelevant here; handle terminating ZLPs + * like PIO does, since the hardware RNDIS mode seems + * unreliable except for the + * last-packet-is-already-short case. + */ + use_dma = use_dma && c->channel_program( + musb_ep->dma, musb_ep->packet_sz, + 0, + request->dma + request->actual, + request_size); + if (!use_dma) { + c->channel_release(musb_ep->dma); + musb_ep->dma = NULL; + csr &= ~MUSB_TXCSR_DMAENAB; + musb_writew(epio, MUSB_TXCSR, csr); + /* invariant: prequest->buf is non-null */ + } + } else if (tusb_dma_omap()) + use_dma = use_dma && c->channel_program( + musb_ep->dma, musb_ep->packet_sz, + request->zero, + request->dma + request->actual, + request_size); } #endif @@ -1266,7 +1276,8 @@ static int musb_gadget_queue(struct usb_ep *ep, struct usb_request *req, dev_dbg(musb->controller, "req %p queued to %s while ep %s\n", req, ep->name, "disabled"); status = -ESHUTDOWN; - goto cleanup; + unmap_dma_buffer(request, musb); + goto unlock; } /* add request to the list */ @@ -1276,7 +1287,7 @@ static int musb_gadget_queue(struct usb_ep *ep, struct usb_request *req, if (!musb_ep->busy && &request->list == musb_ep->req_list.next) musb_ep_restart(musb, request); -cleanup: +unlock: spin_unlock_irqrestore(&musb->lock, lockflags); return status; } @@ -1801,6 +1812,8 @@ err: void musb_gadget_cleanup(struct musb *musb) { + if (musb->port_mode == MUSB_PORT_MODE_HOST) + return; usb_del_gadget_udc(&musb->g); } @@ -1820,7 +1833,6 @@ static int musb_gadget_start(struct usb_gadget *g, { struct musb *musb = gadget_to_musb(g); struct usb_otg *otg = musb->xceiv->otg; - struct usb_hcd *hcd = musb_to_hcd(musb); unsigned long flags; int retval = 0; @@ -1847,17 +1859,9 @@ static int musb_gadget_start(struct usb_gadget *g, * handles power budgeting ... this way also * ensures HdrcStart is indirectly called. */ - retval = usb_add_hcd(hcd, 0, 0); - if (retval < 0) { - dev_dbg(musb->controller, "add_hcd failed, %d\n", retval); - goto err; - } - if (musb->xceiv->last_event == USB_EVENT_ID) musb_platform_set_vbus(musb, 1); - hcd->self.uses_pio_for_control = 1; - if (musb->xceiv->last_event == USB_EVENT_NONE) pm_runtime_put(musb->controller); @@ -1935,14 +1939,14 @@ static int musb_gadget_stop(struct usb_gadget *g, stop_activity(musb, driver); otg_set_peripheral(musb->xceiv->otg, NULL); - dev_dbg(musb->controller, "unregistering driver %s\n", driver->function); + dev_dbg(musb->controller, "unregistering driver %s\n", + driver ? driver->function : "(removed)"); musb->is_active = 0; musb->gadget_driver = NULL; musb_platform_try_idle(musb, 0); spin_unlock_irqrestore(&musb->lock, flags); - usb_remove_hcd(musb_to_hcd(musb)); /* * FIXME we need to be able to register another * gadget driver here and have everything work; diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h index 66b7c5e0fb44..0314dfc770c7 100644 --- a/drivers/usb/musb/musb_gadget.h +++ b/drivers/usb/musb/musb_gadget.h @@ -37,6 +37,38 @@ #include <linux/list.h> +#if IS_ENABLED(CONFIG_USB_MUSB_GADGET) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) +extern irqreturn_t musb_g_ep0_irq(struct musb *); +extern void musb_g_tx(struct musb *, u8); +extern void musb_g_rx(struct musb *, u8); +extern void musb_g_reset(struct musb *); +extern void musb_g_suspend(struct musb *); +extern void musb_g_resume(struct musb *); +extern void musb_g_wakeup(struct musb *); +extern void musb_g_disconnect(struct musb *); +extern void musb_gadget_cleanup(struct musb *); +extern int musb_gadget_setup(struct musb *); + +#else +static inline irqreturn_t musb_g_ep0_irq(struct musb *musb) +{ + return 0; +} + +static inline void musb_g_tx(struct musb *musb, u8 epnum) {} +static inline void musb_g_rx(struct musb *musb, u8 epnum) {} +static inline void musb_g_reset(struct musb *musb) {} +static inline void musb_g_suspend(struct musb *musb) {} +static inline void musb_g_resume(struct musb *musb) {} +static inline void musb_g_wakeup(struct musb *musb) {} +static inline void musb_g_disconnect(struct musb *musb) {} +static inline void musb_gadget_cleanup(struct musb *musb) {} +static inline int musb_gadget_setup(struct musb *musb) +{ + return 0; +} +#endif + enum buffer_map_state { UN_MAPPED = 0, PRE_MAPPED, @@ -106,14 +138,8 @@ static inline struct musb_request *next_request(struct musb_ep *ep) return container_of(queue->next, struct musb_request, list); } -extern void musb_g_tx(struct musb *musb, u8 epnum); -extern void musb_g_rx(struct musb *musb, u8 epnum); - extern const struct usb_ep_ops musb_g_ep0_ops; -extern int musb_gadget_setup(struct musb *); -extern void musb_gadget_cleanup(struct musb *); - extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int); extern void musb_ep_restart(struct musb *, struct musb_request *); diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 8914dec49f01..9a2b8c85f19a 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -46,7 +46,6 @@ #include "musb_core.h" #include "musb_host.h" - /* MUSB HOST status 22-mar-2006 * * - There's still lots of partial code duplication for fault paths, so @@ -96,6 +95,11 @@ * of transfers between endpoints, or anything clever. */ +struct musb *hcd_to_musb(struct usb_hcd *hcd) +{ + return *(struct musb **) hcd->hcd_priv; +} + static void musb_ep_program(struct musb *musb, u8 epnum, struct urb *urb, int is_out, @@ -269,8 +273,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh) /* FIXME this doesn't implement that scheduling policy ... * or handle framecounter wrapping */ - if ((urb->transfer_flags & URB_ISO_ASAP) - || (frame >= urb->start_frame)) { + if (1) { /* Always assume URB_ISO_ASAP */ /* REVISIT the SOF irq handler shouldn't duplicate * this code; and we don't init urb->start_frame... */ @@ -311,9 +314,9 @@ __acquires(musb->lock) urb->actual_length, urb->transfer_buffer_length ); - usb_hcd_unlink_urb_from_ep(musb_to_hcd(musb), urb); + usb_hcd_unlink_urb_from_ep(musb->hcd, urb); spin_unlock(&musb->lock); - usb_hcd_giveback_urb(musb_to_hcd(musb), urb, status); + usb_hcd_giveback_urb(musb->hcd, urb, status); spin_lock(&musb->lock); } @@ -625,7 +628,7 @@ static bool musb_tx_dma_program(struct dma_controller *dma, u16 csr; u8 mode; -#ifdef CONFIG_USB_INVENTRA_DMA +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) if (length > channel->max_len) length = channel->max_len; @@ -1232,7 +1235,6 @@ void musb_host_tx(struct musb *musb, u8 epnum) void __iomem *mbase = musb->mregs; struct dma_channel *dma; bool transfer_pending = false; - static bool use_sg; musb_ep_select(mbase, epnum); tx_csr = musb_readw(epio, MUSB_TXCSR); @@ -1456,16 +1458,16 @@ done: if (length > qh->maxpacket) length = qh->maxpacket; /* Unmap the buffer so that CPU can use it */ - usb_hcd_unmap_urb_for_dma(musb_to_hcd(musb), urb); + usb_hcd_unmap_urb_for_dma(musb->hcd, urb); /* * We need to map sg if the transfer_buffer is * NULL. */ if (!urb->transfer_buffer) - use_sg = true; + qh->use_sg = true; - if (use_sg) { + if (qh->use_sg) { /* sg_miter_start is already done in musb_ep_program */ if (!sg_miter_next(&qh->sg_miter)) { dev_err(musb->controller, "error: sg list empty\n"); @@ -1484,9 +1486,9 @@ done: qh->segsize = length; - if (use_sg) { + if (qh->use_sg) { if (offset + length >= urb->transfer_buffer_length) - use_sg = false; + qh->use_sg = false; } musb_ep_select(mbase, epnum); @@ -1552,7 +1554,6 @@ void musb_host_rx(struct musb *musb, u8 epnum) bool done = false; u32 status; struct dma_channel *dma; - static bool use_sg; unsigned int sg_flags = SG_MITER_ATOMIC | SG_MITER_TO_SG; musb_ep_select(mbase, epnum); @@ -1659,7 +1660,7 @@ void musb_host_rx(struct musb *musb, u8 epnum) /* FIXME this is _way_ too much in-line logic for Mentor DMA */ -#ifndef CONFIG_USB_INVENTRA_DMA +#if !defined(CONFIG_USB_INVENTRA_DMA) && !defined(CONFIG_USB_UX500_DMA) if (rx_csr & MUSB_RXCSR_H_REQPKT) { /* REVISIT this happened for a while on some short reads... * the cleanup still needs investigation... looks bad... @@ -1691,7 +1692,7 @@ void musb_host_rx(struct musb *musb, u8 epnum) | MUSB_RXCSR_RXPKTRDY); musb_writew(hw_ep->regs, MUSB_RXCSR, val); -#ifdef CONFIG_USB_INVENTRA_DMA +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) if (usb_pipeisoc(pipe)) { struct usb_iso_packet_descriptor *d; @@ -1747,7 +1748,7 @@ void musb_host_rx(struct musb *musb, u8 epnum) } /* we are expecting IN packets */ -#ifdef CONFIG_USB_INVENTRA_DMA +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) if (dma) { struct dma_controller *c; u16 rx_count; @@ -1756,10 +1757,10 @@ void musb_host_rx(struct musb *musb, u8 epnum) rx_count = musb_readw(epio, MUSB_RXCOUNT); - dev_dbg(musb->controller, "RX%d count %d, buffer 0x%x len %d/%d\n", + dev_dbg(musb->controller, "RX%d count %d, buffer 0x%llx len %d/%d\n", epnum, rx_count, - urb->transfer_dma - + urb->actual_length, + (unsigned long long) urb->transfer_dma + + urb->actual_length, qh->offset, urb->transfer_buffer_length); @@ -1871,19 +1872,19 @@ void musb_host_rx(struct musb *musb, u8 epnum) unsigned int received_len; /* Unmap the buffer so that CPU can use it */ - usb_hcd_unmap_urb_for_dma(musb_to_hcd(musb), urb); + usb_hcd_unmap_urb_for_dma(musb->hcd, urb); /* * We need to map sg if the transfer_buffer is * NULL. */ if (!urb->transfer_buffer) { - use_sg = true; + qh->use_sg = true; sg_miter_start(&qh->sg_miter, urb->sg, 1, sg_flags); } - if (use_sg) { + if (qh->use_sg) { if (!sg_miter_next(&qh->sg_miter)) { dev_err(musb->controller, "error: sg list empty\n"); sg_miter_stop(&qh->sg_miter); @@ -1913,8 +1914,8 @@ finish: urb->actual_length += xfer_len; qh->offset += xfer_len; if (done) { - if (use_sg) - use_sg = false; + if (qh->use_sg) + qh->use_sg = false; if (urb->status == -EINPROGRESS) urb->status = status; @@ -2465,7 +2466,6 @@ static int musb_bus_resume(struct usb_hcd *hcd) return 0; } - #ifndef CONFIG_MUSB_PIO_ONLY #define MUSB_USB_DMA_ALIGN 4 @@ -2577,10 +2577,10 @@ static void musb_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) } #endif /* !CONFIG_MUSB_PIO_ONLY */ -const struct hc_driver musb_hc_driver = { +static const struct hc_driver musb_hc_driver = { .description = "musb-hcd", .product_desc = "MUSB HDRC host driver", - .hcd_priv_size = sizeof(struct musb), + .hcd_priv_size = sizeof(struct musb *), .flags = HCD_USB2 | HCD_MEMORY, /* not using irq handler or reset hooks from usbcore, since @@ -2608,3 +2608,68 @@ const struct hc_driver musb_hc_driver = { /* .start_port_reset = NULL, */ /* .hub_irq_enable = NULL, */ }; + +int musb_host_alloc(struct musb *musb) +{ + struct device *dev = musb->controller; + + /* usbcore sets dev->driver_data to hcd, and sometimes uses that... */ + musb->hcd = usb_create_hcd(&musb_hc_driver, dev, dev_name(dev)); + if (!musb->hcd) + return -EINVAL; + + *musb->hcd->hcd_priv = (unsigned long) musb; + musb->hcd->self.uses_pio_for_control = 1; + musb->hcd->uses_new_polling = 1; + musb->hcd->has_tt = 1; + + return 0; +} + +void musb_host_cleanup(struct musb *musb) +{ + if (musb->port_mode == MUSB_PORT_MODE_GADGET) + return; + usb_remove_hcd(musb->hcd); + musb->hcd = NULL; +} + +void musb_host_free(struct musb *musb) +{ + usb_put_hcd(musb->hcd); +} + +int musb_host_setup(struct musb *musb, int power_budget) +{ + int ret; + struct usb_hcd *hcd = musb->hcd; + + MUSB_HST_MODE(musb); + musb->xceiv->otg->default_a = 1; + musb->xceiv->state = OTG_STATE_A_IDLE; + + otg_set_host(musb->xceiv->otg, &hcd->self); + hcd->self.otg_port = 1; + musb->xceiv->otg->host = &hcd->self; + hcd->power_budget = 2 * (power_budget ? : 250); + + ret = usb_add_hcd(hcd, 0, 0); + if (ret < 0) + return ret; + + return 0; +} + +void musb_host_resume_root_hub(struct musb *musb) +{ + usb_hcd_resume_root_hub(musb->hcd); +} + +void musb_host_poke_root_hub(struct musb *musb) +{ + MUSB_HST_MODE(musb); + if (musb->hcd->status_urb) + usb_hcd_poll_rh_status(musb->hcd); + else + usb_hcd_resume_root_hub(musb->hcd); +} diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h index 5a9c8feec10c..960d73570b2f 100644 --- a/drivers/usb/musb/musb_host.h +++ b/drivers/usb/musb/musb_host.h @@ -37,16 +37,6 @@ #include <linux/scatterlist.h> -static inline struct usb_hcd *musb_to_hcd(struct musb *musb) -{ - return container_of((void *) musb, struct usb_hcd, hcd_priv); -} - -static inline struct musb *hcd_to_musb(struct usb_hcd *hcd) -{ - return (struct musb *) (hcd->hcd_priv); -} - /* stored in "usb_host_endpoint.hcpriv" for scheduled endpoints */ struct musb_qh { struct usb_host_endpoint *hep; /* usbcore info */ @@ -74,6 +64,7 @@ struct musb_qh { u16 frame; /* for periodic schedule */ unsigned iso_idx; /* in urb->iso_frame_desc[] */ struct sg_mapping_iter sg_miter; /* for highmem in PIO mode */ + bool use_sg; /* to track urb using sglist */ }; /* map from control or bulk queue head to the first qh on that ring */ @@ -85,7 +76,52 @@ static inline struct musb_qh *first_qh(struct list_head *q) } +#if IS_ENABLED(CONFIG_USB_MUSB_HOST) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) +extern struct musb *hcd_to_musb(struct usb_hcd *); +extern irqreturn_t musb_h_ep0_irq(struct musb *); +extern int musb_host_alloc(struct musb *); +extern int musb_host_setup(struct musb *, int); +extern void musb_host_cleanup(struct musb *); +extern void musb_host_tx(struct musb *, u8); +extern void musb_host_rx(struct musb *, u8); +extern void musb_root_disconnect(struct musb *musb); +extern void musb_host_free(struct musb *); +extern void musb_host_cleanup(struct musb *); +extern void musb_host_tx(struct musb *, u8); +extern void musb_host_rx(struct musb *, u8); extern void musb_root_disconnect(struct musb *musb); +extern void musb_host_resume_root_hub(struct musb *musb); +extern void musb_host_poke_root_hub(struct musb *musb); +#else +static inline struct musb *hcd_to_musb(struct usb_hcd *hcd) +{ + return NULL; +} + +static inline irqreturn_t musb_h_ep0_irq(struct musb *musb) +{ + return 0; +} + +static inline int musb_host_alloc(struct musb *musb) +{ + return 0; +} + +static inline int musb_host_setup(struct musb *musb, int power_budget) +{ + return 0; +} + +static inline void musb_host_cleanup(struct musb *musb) {} +static inline void musb_host_free(struct musb *musb) {} +static inline void musb_host_tx(struct musb *musb, u8 epnum) {} +static inline void musb_host_rx(struct musb *musb, u8 epnum) {} +static inline void musb_root_disconnect(struct musb *musb) {} +static inline void musb_host_resume_root_hub(struct musb *musb) {} +static inline void musb_host_poll_rh_status(struct musb *musb) {} +static inline void musb_host_poke_root_hub(struct musb *musb) {} +#endif struct usb_hcd; @@ -94,8 +130,6 @@ extern int musb_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength); -extern const struct hc_driver musb_hc_driver; - static inline struct urb *next_urb(struct musb_qh *qh) { struct list_head *queue; diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index ef7d11045f56..a523950c2b32 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -44,6 +44,51 @@ #include "musb_core.h" +/* +* Program the HDRC to start (enable interrupts, dma, etc.). +*/ +static void musb_start(struct musb *musb) +{ + void __iomem *regs = musb->mregs; + u8 devctl = musb_readb(regs, MUSB_DEVCTL); + + dev_dbg(musb->controller, "<== devctl %02x\n", devctl); + + /* Set INT enable registers, enable interrupts */ + musb->intrtxe = musb->epmask; + musb_writew(regs, MUSB_INTRTXE, musb->intrtxe); + musb->intrrxe = musb->epmask & 0xfffe; + musb_writew(regs, MUSB_INTRRXE, musb->intrrxe); + musb_writeb(regs, MUSB_INTRUSBE, 0xf7); + + musb_writeb(regs, MUSB_TESTMODE, 0); + + /* put into basic highspeed mode and start session */ + musb_writeb(regs, MUSB_POWER, MUSB_POWER_ISOUPDATE + | MUSB_POWER_HSENAB + /* ENSUSPEND wedges tusb */ + /* | MUSB_POWER_ENSUSPEND */ + ); + + musb->is_active = 0; + devctl = musb_readb(regs, MUSB_DEVCTL); + devctl &= ~MUSB_DEVCTL_SESSION; + + /* session started after: + * (a) ID-grounded irq, host mode; + * (b) vbus present/connect IRQ, peripheral mode; + * (c) peripheral initiates, using SRP + */ + if (musb->port_mode != MUSB_PORT_MODE_HOST && + (devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) { + musb->is_active = 1; + } else { + devctl |= MUSB_DEVCTL_SESSION; + } + + musb_platform_enable(musb); + musb_writeb(regs, MUSB_DEVCTL, devctl); +} static void musb_port_suspend(struct musb *musb, bool do_suspend) { @@ -145,7 +190,6 @@ static void musb_port_reset(struct musb *musb, bool do_reset) msleep(1); } - musb->ignore_disconnect = true; power &= 0xf0; musb_writeb(mbase, MUSB_POWER, power | MUSB_POWER_RESET); @@ -158,8 +202,6 @@ static void musb_port_reset(struct musb *musb, bool do_reset) musb_writeb(mbase, MUSB_POWER, power & ~MUSB_POWER_RESET); - musb->ignore_disconnect = false; - power = musb_readb(mbase, MUSB_POWER); if (power & MUSB_POWER_HSMODE) { dev_dbg(musb->controller, "high-speed device connected\n"); @@ -170,7 +212,7 @@ static void musb_port_reset(struct musb *musb, bool do_reset) musb->port1_status |= USB_PORT_STAT_ENABLE | (USB_PORT_STAT_C_RESET << 16) | (USB_PORT_STAT_C_ENABLE << 16); - usb_hcd_poll_rh_status(musb_to_hcd(musb)); + usb_hcd_poll_rh_status(musb->hcd); musb->vbuserr_retry = VBUSERR_RETRY_COUNT; } @@ -183,7 +225,7 @@ void musb_root_disconnect(struct musb *musb) musb->port1_status = USB_PORT_STAT_POWER | (USB_PORT_STAT_C_CONNECTION << 16); - usb_hcd_poll_rh_status(musb_to_hcd(musb)); + usb_hcd_poll_rh_status(musb->hcd); musb->is_active = 0; switch (musb->xceiv->state) { @@ -337,7 +379,7 @@ int musb_hub_control( musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | MUSB_PORT_STAT_RESUME); musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; - usb_hcd_poll_rh_status(musb_to_hcd(musb)); + usb_hcd_poll_rh_status(musb->hcd); /* NOTE: it might really be A_WAIT_BCON ... */ musb->xceiv->state = OTG_STATE_A_HOST; } diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c index 3d1fd52a15a9..e8e9f9aab203 100644 --- a/drivers/usb/musb/musbhsdma.c +++ b/drivers/usb/musb/musbhsdma.c @@ -37,18 +37,10 @@ #include "musb_core.h" #include "musbhsdma.h" -static int dma_controller_start(struct dma_controller *c) -{ - /* nothing to do */ - return 0; -} - static void dma_channel_release(struct dma_channel *channel); -static int dma_controller_stop(struct dma_controller *c) +static void dma_controller_stop(struct musb_dma_controller *controller) { - struct musb_dma_controller *controller = container_of(c, - struct musb_dma_controller, controller); struct musb *musb = controller->private_data; struct dma_channel *channel; u8 bit; @@ -67,8 +59,6 @@ static int dma_controller_stop(struct dma_controller *c) } } } - - return 0; } static struct dma_channel *dma_channel_allocate(struct dma_controller *c, @@ -371,8 +361,7 @@ void dma_controller_destroy(struct dma_controller *c) struct musb_dma_controller *controller = container_of(c, struct musb_dma_controller, controller); - if (!controller) - return; + dma_controller_stop(controller); if (controller->irq) free_irq(controller->irq, c); @@ -400,8 +389,6 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba controller->private_data = musb; controller->base = base; - controller->controller.start = dma_controller_start; - controller->controller.stop = dma_controller_stop; controller->controller.channel_alloc = dma_channel_allocate; controller->controller.channel_release = dma_channel_release; controller->controller.channel_program = dma_channel_program; diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 628b93fe5ccc..59d2245db1c8 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -87,7 +87,7 @@ static void musb_do_idle(unsigned long _musb) musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | MUSB_PORT_STAT_RESUME); musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; - usb_hcd_poll_rh_status(musb_to_hcd(musb)); + usb_hcd_poll_rh_status(musb->hcd); /* NOTE: it might really be A_WAIT_BCON ... */ musb->xceiv->state = OTG_STATE_A_HOST; } @@ -255,7 +255,7 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) { struct musb *musb = glue_to_musb(glue); struct device *dev = musb->controller; - struct musb_hdrc_platform_data *pdata = dev->platform_data; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); struct omap_musb_board_data *data = pdata->board_data; struct usb_otg *otg = musb->xceiv->otg; @@ -341,7 +341,7 @@ static int omap2430_musb_init(struct musb *musb) int status = 0; struct device *dev = musb->controller; struct omap2430_glue *glue = dev_get_drvdata(dev->parent); - struct musb_hdrc_platform_data *plat = dev->platform_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); struct omap_musb_board_data *data = plat->board_data; /* We require some kind of external transceiver, hooked @@ -412,7 +412,7 @@ static void omap2430_musb_enable(struct musb *musb) unsigned long timeout = jiffies + msecs_to_jiffies(1000); struct device *dev = musb->controller; struct omap2430_glue *glue = dev_get_drvdata(dev->parent); - struct musb_hdrc_platform_data *pdata = dev->platform_data; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); struct omap_musb_board_data *data = pdata->board_data; switch (glue->status) { @@ -481,7 +481,8 @@ static u64 omap2430_dmamask = DMA_BIT_MASK(32); static int omap2430_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[3]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct omap_musb_board_data *data; struct platform_device *musb; struct omap2430_glue *glue; @@ -513,7 +514,7 @@ static int omap2430_probe(struct platform_device *pdev) pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) { dev_err(&pdev->dev, - "failed to allocate musb platfrom data\n"); + "failed to allocate musb platform data\n"); goto err2; } @@ -567,8 +568,26 @@ static int omap2430_probe(struct platform_device *pdev) INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + musb_resources[2].name = pdev->resource[2].name; + musb_resources[2].start = pdev->resource[2].start; + musb_resources[2].end = pdev->resource[2].end; + musb_resources[2].flags = pdev->resource[2].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err2; diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index 7369ba33c94f..b3b3ed723882 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -25,7 +25,7 @@ #include <linux/io.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_gen_xceiv.h> #include "musb_core.h" @@ -1156,7 +1156,8 @@ static u64 tusb_dmamask = DMA_BIT_MASK(32); static int tusb_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[3]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); struct platform_device *musb; struct tusb6010_glue *glue; @@ -1185,8 +1186,26 @@ static int tusb_probe(struct platform_device *pdev) platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + musb_resources[2].name = pdev->resource[2].name; + musb_resources[2].start = pdev->resource[2].start; + musb_resources[2].end = pdev->resource[2].end; + musb_resources[2].flags = pdev->resource[2].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err3; diff --git a/drivers/usb/musb/tusb6010_omap.c b/drivers/usb/musb/tusb6010_omap.c index 98df17c984a8..b8794eb81e9c 100644 --- a/drivers/usb/musb/tusb6010_omap.c +++ b/drivers/usb/musb/tusb6010_omap.c @@ -66,28 +66,6 @@ struct tusb_omap_dma { unsigned multichannel:1; }; -static int tusb_omap_dma_start(struct dma_controller *c) -{ - struct tusb_omap_dma *tusb_dma; - - tusb_dma = container_of(c, struct tusb_omap_dma, controller); - - /* dev_dbg(musb->controller, "ep%i ch: %i\n", chdat->epnum, chdat->ch); */ - - return 0; -} - -static int tusb_omap_dma_stop(struct dma_controller *c) -{ - struct tusb_omap_dma *tusb_dma; - - tusb_dma = container_of(c, struct tusb_omap_dma, controller); - - /* dev_dbg(musb->controller, "ep%i ch: %i\n", chdat->epnum, chdat->ch); */ - - return 0; -} - /* * Allocate dmareq0 to the current channel unless it's already taken */ @@ -695,8 +673,6 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba tusb_dma->dmareq = -1; tusb_dma->sync_dev = -1; - tusb_dma->controller.start = tusb_omap_dma_start; - tusb_dma->controller.stop = tusb_omap_dma_stop; tusb_dma->controller.channel_alloc = tusb_omap_dma_allocate; tusb_dma->controller.channel_release = tusb_omap_dma_release; tusb_dma->controller.channel_program = tusb_omap_dma_program; diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c index 2c80004e0a83..59256b12f746 100644 --- a/drivers/usb/musb/ux500.c +++ b/drivers/usb/musb/ux500.c @@ -25,11 +25,19 @@ #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/usb/musb-ux500.h> #include "musb_core.h" +static struct musb_hdrc_config ux500_musb_hdrc_config = { + .multipoint = true, + .dyn_fifo = true, + .num_eps = 16, + .ram_bits = 16, +}; + struct ux500_glue { struct device *dev; struct platform_device *musb; @@ -187,14 +195,58 @@ static const struct musb_platform_ops ux500_ops = { .set_vbus = ux500_musb_set_vbus, }; +static struct musb_hdrc_platform_data * +ux500_of_probe(struct platform_device *pdev, struct device_node *np) +{ + struct musb_hdrc_platform_data *pdata; + const char *mode; + int strlen; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + mode = of_get_property(np, "dr_mode", &strlen); + if (!mode) { + dev_err(&pdev->dev, "No 'dr_mode' property found\n"); + return NULL; + } + + if (strlen > 0) { + if (!strcmp(mode, "host")) + pdata->mode = MUSB_HOST; + if (!strcmp(mode, "otg")) + pdata->mode = MUSB_OTG; + if (!strcmp(mode, "peripheral")) + pdata->mode = MUSB_PERIPHERAL; + } + + return pdata; +} + static int ux500_probe(struct platform_device *pdev) { - struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; + struct resource musb_resources[2]; + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); + struct device_node *np = pdev->dev.of_node; struct platform_device *musb; struct ux500_glue *glue; struct clk *clk; int ret = -ENOMEM; + if (!pdata) { + if (np) { + pdata = ux500_of_probe(pdev, np); + if (!pdata) + goto err0; + + pdev->dev.platform_data = pdata; + } else { + dev_err(&pdev->dev, "no pdata or device tree found\n"); + goto err0; + } + } + glue = kzalloc(sizeof(*glue), GFP_KERNEL); if (!glue) { dev_err(&pdev->dev, "failed to allocate glue context\n"); @@ -221,19 +273,34 @@ static int ux500_probe(struct platform_device *pdev) } musb->dev.parent = &pdev->dev; - musb->dev.dma_mask = pdev->dev.dma_mask; + musb->dev.dma_mask = &pdev->dev.coherent_dma_mask; musb->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask; + musb->dev.of_node = pdev->dev.of_node; glue->dev = &pdev->dev; glue->musb = musb; glue->clk = clk; pdata->platform_ops = &ux500_ops; + pdata->config = &ux500_musb_hdrc_config; platform_set_drvdata(pdev, glue); - ret = platform_device_add_resources(musb, pdev->resource, - pdev->num_resources); + memset(musb_resources, 0x00, sizeof(*musb_resources) * + ARRAY_SIZE(musb_resources)); + + musb_resources[0].name = pdev->resource[0].name; + musb_resources[0].start = pdev->resource[0].start; + musb_resources[0].end = pdev->resource[0].end; + musb_resources[0].flags = pdev->resource[0].flags; + + musb_resources[1].name = pdev->resource[1].name; + musb_resources[1].start = pdev->resource[1].start; + musb_resources[1].end = pdev->resource[1].end; + musb_resources[1].flags = pdev->resource[1].flags; + + ret = platform_device_add_resources(musb, musb_resources, + ARRAY_SIZE(musb_resources)); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); goto err5; @@ -320,12 +387,18 @@ static const struct dev_pm_ops ux500_pm_ops = { #define DEV_PM_OPS NULL #endif +static const struct of_device_id ux500_match[] = { + { .compatible = "stericsson,db8500-musb", }, + {} +}; + static struct platform_driver ux500_driver = { .probe = ux500_probe, .remove = ux500_remove, .driver = { .name = "musb-ux500", .pm = DEV_PM_OPS, + .of_match_table = ux500_match, }, }; diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index 338120641145..3700e9713258 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -34,6 +34,11 @@ #include <linux/platform_data/usb-musb-ux500.h> #include "musb_core.h" +static const char *iep_chan_names[] = { "iep_1_9", "iep_2_10", "iep_3_11", "iep_4_12", + "iep_5_13", "iep_6_14", "iep_7_15", "iep_8" }; +static const char *oep_chan_names[] = { "oep_1_9", "oep_2_10", "oep_3_11", "oep_4_12", + "oep_5_13", "oep_6_14", "oep_7_15", "oep_8" }; + struct ux500_dma_channel { struct dma_channel channel; struct ux500_dma_controller *controller; @@ -48,10 +53,8 @@ struct ux500_dma_channel { struct ux500_dma_controller { struct dma_controller controller; - struct ux500_dma_channel rx_channel[UX500_MUSB_DMA_NUM_RX_CHANNELS]; - struct ux500_dma_channel tx_channel[UX500_MUSB_DMA_NUM_TX_CHANNELS]; - u32 num_rx_channels; - u32 num_tx_channels; + struct ux500_dma_channel rx_channel[UX500_MUSB_DMA_NUM_RX_TX_CHANNELS]; + struct ux500_dma_channel tx_channel[UX500_MUSB_DMA_NUM_RX_TX_CHANNELS]; void *private_data; dma_addr_t phy_base; }; @@ -71,8 +74,7 @@ static void ux500_dma_callback(void *private_data) spin_lock_irqsave(&musb->lock, flags); ux500_channel->channel.actual_len = ux500_channel->cur_len; ux500_channel->channel.status = MUSB_DMA_STATUS_FREE; - musb_dma_completion(musb, hw_ep->epnum, - ux500_channel->is_tx); + musb_dma_completion(musb, hw_ep->epnum, ux500_channel->is_tx); spin_unlock_irqrestore(&musb->lock, flags); } @@ -144,19 +146,15 @@ static struct dma_channel *ux500_dma_channel_allocate(struct dma_controller *c, struct ux500_dma_channel *ux500_channel = NULL; struct musb *musb = controller->private_data; u8 ch_num = hw_ep->epnum - 1; - u32 max_ch; - /* Max 8 DMA channels (0 - 7). Each DMA channel can only be allocated + /* 8 DMA channels (0 - 7). Each DMA channel can only be allocated * to specified hw_ep. For example DMA channel 0 can only be allocated * to hw_ep 1 and 9. */ if (ch_num > 7) ch_num -= 8; - max_ch = is_tx ? controller->num_tx_channels : - controller->num_rx_channels; - - if (ch_num >= max_ch) + if (ch_num >= UX500_MUSB_DMA_NUM_RX_TX_CHANNELS) return NULL; ux500_channel = is_tx ? &(controller->tx_channel[ch_num]) : @@ -256,15 +254,13 @@ static int ux500_dma_channel_abort(struct dma_channel *channel) return 0; } -static int ux500_dma_controller_stop(struct dma_controller *c) +static void ux500_dma_controller_stop(struct ux500_dma_controller *controller) { - struct ux500_dma_controller *controller = container_of(c, - struct ux500_dma_controller, controller); struct ux500_dma_channel *ux500_channel; struct dma_channel *channel; u8 ch_num; - for (ch_num = 0; ch_num < controller->num_rx_channels; ch_num++) { + for (ch_num = 0; ch_num < UX500_MUSB_DMA_NUM_RX_TX_CHANNELS; ch_num++) { channel = &controller->rx_channel[ch_num].channel; ux500_channel = channel->private_data; @@ -274,7 +270,7 @@ static int ux500_dma_controller_stop(struct dma_controller *c) dma_release_channel(ux500_channel->dma_chan); } - for (ch_num = 0; ch_num < controller->num_tx_channels; ch_num++) { + for (ch_num = 0; ch_num < UX500_MUSB_DMA_NUM_RX_TX_CHANNELS; ch_num++) { channel = &controller->tx_channel[ch_num].channel; ux500_channel = channel->private_data; @@ -283,46 +279,44 @@ static int ux500_dma_controller_stop(struct dma_controller *c) if (ux500_channel->dma_chan) dma_release_channel(ux500_channel->dma_chan); } - - return 0; } -static int ux500_dma_controller_start(struct dma_controller *c) +static int ux500_dma_controller_start(struct ux500_dma_controller *controller) { - struct ux500_dma_controller *controller = container_of(c, - struct ux500_dma_controller, controller); struct ux500_dma_channel *ux500_channel = NULL; struct musb *musb = controller->private_data; struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; - struct ux500_musb_board_data *data = plat->board_data; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); + struct ux500_musb_board_data *data; struct dma_channel *dma_channel = NULL; + char **chan_names; u32 ch_num; u8 dir; u8 is_tx = 0; void **param_array; struct ux500_dma_channel *channel_array; - u32 ch_count; dma_cap_mask_t mask; - if ((data->num_rx_channels > UX500_MUSB_DMA_NUM_RX_CHANNELS) || - (data->num_tx_channels > UX500_MUSB_DMA_NUM_TX_CHANNELS)) + if (!plat) { + dev_err(musb->controller, "No platform data\n"); return -EINVAL; + } - controller->num_rx_channels = data->num_rx_channels; - controller->num_tx_channels = data->num_tx_channels; + data = plat->board_data; dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); /* Prepare the loop for RX channels */ channel_array = controller->rx_channel; - ch_count = data->num_rx_channels; - param_array = data->dma_rx_param_array; + param_array = data ? data->dma_rx_param_array : NULL; + chan_names = (char **)iep_chan_names; for (dir = 0; dir < 2; dir++) { - for (ch_num = 0; ch_num < ch_count; ch_num++) { + for (ch_num = 0; + ch_num < UX500_MUSB_DMA_NUM_RX_TX_CHANNELS; + ch_num++) { ux500_channel = &channel_array[ch_num]; ux500_channel->controller = controller; ux500_channel->ch_num = ch_num; @@ -333,15 +327,23 @@ static int ux500_dma_controller_start(struct dma_controller *c) dma_channel->status = MUSB_DMA_STATUS_FREE; dma_channel->max_len = SZ_16M; - ux500_channel->dma_chan = dma_request_channel(mask, - data->dma_filter, - param_array[ch_num]); + ux500_channel->dma_chan = + dma_request_slave_channel(dev, chan_names[ch_num]); + + if (!ux500_channel->dma_chan) + ux500_channel->dma_chan = + dma_request_channel(mask, + data ? + data->dma_filter : + NULL, + param_array[ch_num]); + if (!ux500_channel->dma_chan) { ERR("Dma pipe allocation error dir=%d ch=%d\n", dir, ch_num); /* Release already allocated channels */ - ux500_dma_controller_stop(c); + ux500_dma_controller_stop(controller); return -EBUSY; } @@ -350,8 +352,8 @@ static int ux500_dma_controller_start(struct dma_controller *c) /* Prepare the loop for TX channels */ channel_array = controller->tx_channel; - ch_count = data->num_tx_channels; - param_array = data->dma_tx_param_array; + param_array = data ? data->dma_tx_param_array : NULL; + chan_names = (char **)oep_chan_names; is_tx = 1; } @@ -363,14 +365,17 @@ void dma_controller_destroy(struct dma_controller *c) struct ux500_dma_controller *controller = container_of(c, struct ux500_dma_controller, controller); + ux500_dma_controller_stop(controller); kfree(controller); } -struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *base) +struct dma_controller *dma_controller_create(struct musb *musb, + void __iomem *base) { struct ux500_dma_controller *controller; struct platform_device *pdev = to_platform_device(musb->controller); struct resource *iomem; + int ret; controller = kzalloc(sizeof(*controller), GFP_KERNEL); if (!controller) @@ -387,14 +392,15 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba controller->phy_base = (dma_addr_t) iomem->start; - controller->controller.start = ux500_dma_controller_start; - controller->controller.stop = ux500_dma_controller_stop; controller->controller.channel_alloc = ux500_dma_channel_allocate; controller->controller.channel_release = ux500_dma_channel_release; controller->controller.channel_program = ux500_dma_channel_program; controller->controller.channel_abort = ux500_dma_channel_abort; controller->controller.is_compatible = ux500_dma_is_compatible; + ret = ux500_dma_controller_start(controller); + if (ret) + goto plat_get_fail; return &controller->controller; plat_get_fail: diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 7ef3eb8617a6..d5589f9c60a9 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -1,16 +1,10 @@ # # Physical Layer USB driver configuration # -menuconfig USB_PHY - bool "USB Physical Layer drivers" - help - USB controllers (those which are host, device or DRD) need a - device to handle the physical layer signalling, commonly called - a PHY. - - The following drivers add support for such PHY devices. +menu "USB Physical Layer drivers" -if USB_PHY +config USB_PHY + def_bool n # # USB Transceiver Drivers @@ -18,6 +12,7 @@ if USB_PHY config AB8500_USB tristate "AB8500 USB Transceiver Driver" depends on AB8500_CORE + select USB_PHY help Enable this to support the USB OTG transceiver in AB8500 chip. This transceiver supports high and full speed devices plus, @@ -27,12 +22,14 @@ config FSL_USB2_OTG bool "Freescale USB OTG Transceiver Driver" depends on USB_EHCI_FSL && USB_FSL_USB2 && PM_RUNTIME select USB_OTG + select USB_PHY help Enable this to support Freescale USB OTG transceiver. config ISP1301_OMAP tristate "Philips ISP1301 with OMAP OTG" depends on I2C && ARCH_OMAP_OTG + select USB_PHY help If you say yes here you get support for the Philips ISP1301 USB-On-The-Go transceiver working with the OMAP OTG controller. @@ -46,12 +43,14 @@ config ISP1301_OMAP config MV_U3D_PHY bool "Marvell USB 3.0 PHY controller Driver" depends on CPU_MMP3 + select USB_PHY help Enable this to support Marvell USB 3.0 phy controller for Marvell SoC. config NOP_USB_XCEIV tristate "NOP USB Transceiver Driver" + select USB_PHY help This driver is to be used by all the usb transceiver which are either built-in with usb ip or which are autonomous and doesn't require any @@ -59,6 +58,7 @@ config NOP_USB_XCEIV config OMAP_CONTROL_USB tristate "OMAP CONTROL USB Driver" + depends on ARCH_OMAP2PLUS || COMPILE_TEST help Enable this to add support for the USB part present in the control module. This driver has API to power on the USB2 PHY and to write to @@ -70,6 +70,7 @@ config OMAP_USB2 tristate "OMAP USB2 PHY Driver" depends on ARCH_OMAP2PLUS select OMAP_CONTROL_USB + select USB_PHY help Enable this to support the transceiver that is part of SOC. This driver takes care of all the PHY functionality apart from comparator. @@ -78,15 +79,29 @@ config OMAP_USB2 config OMAP_USB3 tristate "OMAP USB3 PHY Driver" + depends on ARCH_OMAP2PLUS || COMPILE_TEST select OMAP_CONTROL_USB + select USB_PHY help Enable this to support the USB3 PHY that is part of SOC. This driver takes care of all the PHY functionality apart from comparator. This driver interacts with the "OMAP Control USB Driver" to power on/off the PHY. +config AM335X_CONTROL_USB + tristate + +config AM335X_PHY_USB + tristate "AM335x USB PHY Driver" + select USB_PHY + select AM335X_CONTROL_USB + select NOP_USB_XCEIV + help + This driver provides PHY support for that phy which part for the + AM335x SoC. + config SAMSUNG_USBPHY - tristate "Samsung USB PHY Driver" + tristate help Enable this to support Samsung USB phy helper driver for Samsung SoCs. This driver provides common interface to interact, for Samsung USB 2.0 PHY @@ -95,6 +110,7 @@ config SAMSUNG_USBPHY config SAMSUNG_USB2PHY tristate "Samsung USB 2.0 PHY controller Driver" select SAMSUNG_USBPHY + select USB_PHY help Enable this to support Samsung USB 2.0 (High Speed) PHY controller driver for Samsung SoCs. @@ -102,6 +118,7 @@ config SAMSUNG_USB2PHY config SAMSUNG_USB3PHY tristate "Samsung USB 3.0 PHY controller Driver" select SAMSUNG_USBPHY + select USB_PHY help Enable this to support Samsung USB 3.0 (Super Speed) phy controller for samsung SoCs. @@ -109,6 +126,7 @@ config SAMSUNG_USB3PHY config TWL4030_USB tristate "TWL4030 USB Transceiver Driver" depends on TWL4030_CORE && REGULATOR_TWL4030 && USB_MUSB_OMAP2PLUS + select USB_PHY help Enable this to support the USB OTG transceiver on TWL4030 family chips (including the TWL5030 and TPS659x0 devices). @@ -129,6 +147,7 @@ config TWL6030_USB config USB_GPIO_VBUS tristate "GPIO based peripheral-only VBUS sensing 'transceiver'" depends on GPIOLIB + select USB_PHY help Provides simple GPIO VBUS sensing for controllers with an internal transceiver via the usb_phy interface, and @@ -139,6 +158,7 @@ config USB_ISP1301 tristate "NXP ISP1301 USB transceiver support" depends on USB || USB_GADGET depends on I2C + select USB_PHY help Say Y here to add support for the NXP ISP1301 USB transceiver driver. This chip is typically used as USB transceiver for USB host, gadget @@ -150,6 +170,7 @@ config USB_ISP1301 config USB_MSM_OTG tristate "OTG support for Qualcomm on-chip USB controller" depends on (USB || USB_GADGET) && ARCH_MSM + select USB_PHY help Enable this to support the USB OTG transceiver on MSM chips. It handles PHY initialization, clock management, and workarounds @@ -163,6 +184,7 @@ config USB_MV_OTG tristate "Marvell USB OTG support" depends on USB_EHCI_MV && USB_MV_UDC && PM_RUNTIME select USB_OTG + select USB_PHY help Say Y here if you want to build Marvell USB OTG transciever driver in kernel (including PXA and MMP series). This driver @@ -174,21 +196,23 @@ config USB_MXS_PHY tristate "Freescale MXS USB PHY support" depends on ARCH_MXC || ARCH_MXS select STMP_DEVICE + select USB_PHY help Enable this to support the Freescale MXS USB PHY. MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x. config USB_RCAR_PHY - tristate "Renesas R-Car USB phy support" + tristate "Renesas R-Car USB PHY support" depends on USB || USB_GADGET + select USB_PHY help - Say Y here to add support for the Renesas R-Car USB phy driver. - This chip is typically used as USB phy for USB host, gadget. - This driver supports: R8A7779 + Say Y here to add support for the Renesas R-Car USB common PHY driver. + This chip is typically used as USB PHY for USB host, gadget. + This driver supports R8A7778 and R8A7779. To compile this driver as a module, choose M here: the - module will be called rcar-phy. + module will be called phy-rcar-usb. config USB_ULPI bool "Generic ULPI Transceiver Driver" @@ -204,4 +228,4 @@ config USB_ULPI_VIEWPORT Provides read/write operations to the ULPI phy register set for controllers with a viewport register (e.g. Chipidea/ARC controllers). -endif # USB_PHY +endmenu diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index a9169cb1e6fc..2135e85f46ed 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -1,10 +1,8 @@ # # Makefile for physical layer USB drivers # - -ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG - obj-$(CONFIG_USB_PHY) += phy.o +obj-$(CONFIG_OF) += of.o # transceiver drivers, keep the list sorted @@ -13,8 +11,10 @@ phy-fsl-usb2-objs := phy-fsl-usb.o phy-fsm-usb.o obj-$(CONFIG_FSL_USB2_OTG) += phy-fsl-usb2.o obj-$(CONFIG_ISP1301_OMAP) += phy-isp1301-omap.o obj-$(CONFIG_MV_U3D_PHY) += phy-mv-u3d-usb.o -obj-$(CONFIG_NOP_USB_XCEIV) += phy-nop.o +obj-$(CONFIG_NOP_USB_XCEIV) += phy-generic.o obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o +obj-$(CONFIG_AM335X_CONTROL_USB) += phy-am335x-control.o +obj-$(CONFIG_AM335X_PHY_USB) += phy-am335x.o obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o diff --git a/drivers/usb/phy/am35x-phy-control.h b/drivers/usb/phy/am35x-phy-control.h new file mode 100644 index 000000000000..b96594d1962c --- /dev/null +++ b/drivers/usb/phy/am35x-phy-control.h @@ -0,0 +1,21 @@ +#ifndef _AM335x_PHY_CONTROL_H_ +#define _AM335x_PHY_CONTROL_H_ + +struct phy_control { + void (*phy_power)(struct phy_control *phy_ctrl, u32 id, bool on); + void (*phy_wkup)(struct phy_control *phy_ctrl, u32 id, bool on); +}; + +static inline void phy_ctrl_power(struct phy_control *phy_ctrl, u32 id, bool on) +{ + phy_ctrl->phy_power(phy_ctrl, id, on); +} + +static inline void phy_ctrl_wkup(struct phy_control *phy_ctrl, u32 id, bool on) +{ + phy_ctrl->phy_wkup(phy_ctrl, id, on); +} + +struct phy_control *am335x_get_phy_control(struct device *dev); + +#endif diff --git a/drivers/usb/phy/of.c b/drivers/usb/phy/of.c new file mode 100644 index 000000000000..7ea0154da9d5 --- /dev/null +++ b/drivers/usb/phy/of.c @@ -0,0 +1,47 @@ +/* + * USB of helper code + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/usb/of.h> +#include <linux/usb/otg.h> + +static const char *const usbphy_modes[] = { + [USBPHY_INTERFACE_MODE_UNKNOWN] = "", + [USBPHY_INTERFACE_MODE_UTMI] = "utmi", + [USBPHY_INTERFACE_MODE_UTMIW] = "utmi_wide", + [USBPHY_INTERFACE_MODE_ULPI] = "ulpi", + [USBPHY_INTERFACE_MODE_SERIAL] = "serial", + [USBPHY_INTERFACE_MODE_HSIC] = "hsic", +}; + +/** + * of_usb_get_phy_mode - Get phy mode for given device_node + * @np: Pointer to the given device_node + * + * The function gets phy interface string from property 'phy_type', + * and returns the correspondig enum usb_phy_interface + */ +enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np) +{ + const char *phy_type; + int err, i; + + err = of_property_read_string(np, "phy_type", &phy_type); + if (err < 0) + return USBPHY_INTERFACE_MODE_UNKNOWN; + + for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++) + if (!strcmp(phy_type, usbphy_modes[i])) + return i; + + return USBPHY_INTERFACE_MODE_UNKNOWN; +} +EXPORT_SYMBOL_GPL(of_usb_get_phy_mode); diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index e5eb1b5a04eb..087402350b6d 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -1,10 +1,12 @@ /* * drivers/usb/otg/ab8500_usb.c * - * USB transceiver driver for AB8500 chip + * USB transceiver driver for AB8500 family chips * - * Copyright (C) 2010 ST-Ericsson AB + * Copyright (C) 2010-2013 ST-Ericsson AB * Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> + * Avinash Kumar <avinash.kumar@stericsson.com> + * Thirupathi Chippakurthy <thirupathi.chippakurthy@stericsson.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -29,6 +31,8 @@ #include <linux/notifier.h> #include <linux/interrupt.h> #include <linux/delay.h> +#include <linux/clk.h> +#include <linux/err.h> #include <linux/mfd/abx500.h> #include <linux/mfd/abx500/ab8500.h> #include <linux/usb/musb-ux500.h> @@ -41,21 +45,34 @@ /* Bank AB8500_USB */ #define AB8500_USB_LINE_STAT_REG 0x80 #define AB8505_USB_LINE_STAT_REG 0x94 +#define AB8540_USB_LINK_STAT_REG 0x94 +#define AB9540_USB_LINK_STAT_REG 0x94 +#define AB8540_USB_OTG_CTL_REG 0x87 #define AB8500_USB_PHY_CTRL_REG 0x8A +#define AB8540_VBUS_CTRL_REG 0x82 /* Bank AB8500_DEVELOPMENT */ #define AB8500_BANK12_ACCESS 0x00 /* Bank AB8500_DEBUG */ +#define AB8540_DEBUG 0x32 #define AB8500_USB_PHY_TUNE1 0x05 #define AB8500_USB_PHY_TUNE2 0x06 #define AB8500_USB_PHY_TUNE3 0x07 +/* Bank AB8500_INTERRUPT */ +#define AB8500_IT_SOURCE2_REG 0x01 + #define AB8500_BIT_OTG_STAT_ID (1 << 0) #define AB8500_BIT_PHY_CTRL_HOST_EN (1 << 0) #define AB8500_BIT_PHY_CTRL_DEVICE_EN (1 << 1) #define AB8500_BIT_WD_CTRL_ENABLE (1 << 0) #define AB8500_BIT_WD_CTRL_KICK (1 << 1) +#define AB8500_BIT_SOURCE2_VBUSDET (1 << 7) +#define AB8540_BIT_OTG_CTL_VBUS_VALID_ENA (1 << 0) +#define AB8540_BIT_OTG_CTL_ID_HOST_ENA (1 << 1) +#define AB8540_BIT_OTG_CTL_ID_DEV_ENA (1 << 5) +#define AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA (1 << 0) #define AB8500_WD_KICK_DELAY_US 100 /* usec */ #define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */ @@ -112,6 +129,68 @@ enum ab8505_usb_link_status { USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8505, }; +enum ab8540_usb_link_status { + USB_LINK_NOT_CONFIGURED_8540 = 0, + USB_LINK_STD_HOST_NC_8540, + USB_LINK_STD_HOST_C_NS_8540, + USB_LINK_STD_HOST_C_S_8540, + USB_LINK_CDP_8540, + USB_LINK_RESERVED0_8540, + USB_LINK_RESERVED1_8540, + USB_LINK_DEDICATED_CHG_8540, + USB_LINK_ACA_RID_A_8540, + USB_LINK_ACA_RID_B_8540, + USB_LINK_ACA_RID_C_NM_8540, + USB_LINK_RESERVED2_8540, + USB_LINK_RESERVED3_8540, + USB_LINK_HM_IDGND_8540, + USB_LINK_CHARGERPORT_NOT_OK_8540, + USB_LINK_CHARGER_DM_HIGH_8540, + USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540, + USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540, + USB_LINK_STD_UPSTREAM_8540, + USB_LINK_CHARGER_SE1_8540, + USB_LINK_CARKIT_CHGR_1_8540, + USB_LINK_CARKIT_CHGR_2_8540, + USB_LINK_ACA_DOCK_CHGR_8540, + USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_8540, + USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_8540, + USB_LINK_SAMSUNG_UART_CBL_PHY_EN_8540, + USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_8540, + USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8540 +}; + +enum ab9540_usb_link_status { + USB_LINK_NOT_CONFIGURED_9540 = 0, + USB_LINK_STD_HOST_NC_9540, + USB_LINK_STD_HOST_C_NS_9540, + USB_LINK_STD_HOST_C_S_9540, + USB_LINK_CDP_9540, + USB_LINK_RESERVED0_9540, + USB_LINK_RESERVED1_9540, + USB_LINK_DEDICATED_CHG_9540, + USB_LINK_ACA_RID_A_9540, + USB_LINK_ACA_RID_B_9540, + USB_LINK_ACA_RID_C_NM_9540, + USB_LINK_RESERVED2_9540, + USB_LINK_RESERVED3_9540, + USB_LINK_HM_IDGND_9540, + USB_LINK_CHARGERPORT_NOT_OK_9540, + USB_LINK_CHARGER_DM_HIGH_9540, + USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540, + USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540, + USB_LINK_STD_UPSTREAM_9540, + USB_LINK_CHARGER_SE1_9540, + USB_LINK_CARKIT_CHGR_1_9540, + USB_LINK_CARKIT_CHGR_2_9540, + USB_LINK_ACA_DOCK_CHGR_9540, + USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_9540, + USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_9540, + USB_LINK_SAMSUNG_UART_CBL_PHY_EN_9540, + USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_9540, + USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_9540 +}; + enum ab8500_usb_mode { USB_IDLE = 0, USB_PERIPHERAL, @@ -119,13 +198,30 @@ enum ab8500_usb_mode { USB_DEDICATED_CHG }; +/* Register USB_LINK_STATUS interrupt */ +#define AB8500_USB_FLAG_USE_LINK_STATUS_IRQ (1 << 0) +/* Register ID_WAKEUP_F interrupt */ +#define AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ (1 << 1) +/* Register VBUS_DET_F interrupt */ +#define AB8500_USB_FLAG_USE_VBUS_DET_IRQ (1 << 2) +/* Driver is using the ab-iddet driver*/ +#define AB8500_USB_FLAG_USE_AB_IDDET (1 << 3) +/* Enable setting regulators voltage */ +#define AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE (1 << 4) +/* Enable the check_vbus_status workaround */ +#define AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS (1 << 5) +/* Enable the vbus host workaround */ +#define AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK (1 << 6) + struct ab8500_usb { struct usb_phy phy; struct device *dev; struct ab8500 *ab8500; unsigned vbus_draw; struct work_struct phy_dis_work; + struct work_struct vbus_event_work; enum ab8500_usb_mode mode; + struct clk *sysclk; struct regulator *v_ape; struct regulator *v_musb; struct regulator *v_ulpi; @@ -133,6 +229,8 @@ struct ab8500_usb { int previous_link_status_state; struct pinctrl *pinctrl; struct pinctrl_state *pins_sleep; + bool enabled_charging_detection; + unsigned int flags; }; static inline struct ab8500_usb *phy_to_ab(struct usb_phy *x) @@ -171,7 +269,7 @@ static void ab8500_usb_regulator_enable(struct ab8500_usb *ab) if (ret) dev_err(ab->dev, "Failed to enable v-ape\n"); - if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { + if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) { ab->saved_v_ulpi = regulator_get_voltage(ab->v_ulpi); if (ab->saved_v_ulpi < 0) dev_err(ab->dev, "Failed to get v_ulpi voltage\n"); @@ -191,7 +289,7 @@ static void ab8500_usb_regulator_enable(struct ab8500_usb *ab) if (ret) dev_err(ab->dev, "Failed to enable vddulpivio18\n"); - if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { + if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) { volt = regulator_get_voltage(ab->v_ulpi); if ((volt != 1300000) && (volt != 1350000)) dev_err(ab->dev, "Vintcore is not set to 1.3V volt=%d\n", @@ -212,7 +310,7 @@ static void ab8500_usb_regulator_disable(struct ab8500_usb *ab) regulator_disable(ab->v_ulpi); /* USB is not the only consumer of Vintcore, restore old settings */ - if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { + if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) { if (ab->saved_v_ulpi > 0) { ret = regulator_set_voltage(ab->v_ulpi, ab->saved_v_ulpi, ab->saved_v_ulpi); @@ -252,11 +350,23 @@ static void ab8500_usb_phy_enable(struct ab8500_usb *ab, bool sel_host) if (IS_ERR(ab->pinctrl)) dev_err(ab->dev, "could not get/set default pinstate\n"); + if (clk_prepare_enable(ab->sysclk)) + dev_err(ab->dev, "can't prepare/enable clock\n"); + ab8500_usb_regulator_enable(ab); abx500_mask_and_set_register_interruptible(ab->dev, AB8500_USB, AB8500_USB_PHY_CTRL_REG, bit, bit); + + if (ab->flags & AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK) { + if (sel_host) + abx500_set_register_interruptible(ab->dev, + AB8500_USB, AB8540_USB_OTG_CTL_REG, + AB8540_BIT_OTG_CTL_VBUS_VALID_ENA | + AB8540_BIT_OTG_CTL_ID_HOST_ENA | + AB8540_BIT_OTG_CTL_ID_DEV_ENA); + } } static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) @@ -274,6 +384,8 @@ static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) /* Needed to disable the phy.*/ ab8500_usb_wd_workaround(ab); + clk_disable_unprepare(ab->sysclk); + ab8500_usb_regulator_disable(ab); if (!IS_ERR(ab->pinctrl)) { @@ -286,7 +398,8 @@ static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) else if (pinctrl_select_state(ab->pinctrl, ab->pins_sleep)) dev_err(ab->dev, "could not set pins to sleep state\n"); - /* as USB pins are shared with idddet, release them to allow + /* + * as USB pins are shared with iddet, release them to allow * iddet to request them */ pinctrl_put(ab->pinctrl); @@ -298,6 +411,254 @@ static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) #define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_enable(ab, false) #define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_disable(ab, false) +static int ab9540_usb_link_status_update(struct ab8500_usb *ab, + enum ab9540_usb_link_status lsts) +{ + enum ux500_musb_vbus_id_status event = 0; + + dev_dbg(ab->dev, "ab9540_usb_link_status_update %d\n", lsts); + + if (ab->previous_link_status_state == USB_LINK_HM_IDGND_9540 && + (lsts == USB_LINK_STD_HOST_C_NS_9540 || + lsts == USB_LINK_STD_HOST_NC_9540)) + return 0; + + if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_9540 && + (lsts == USB_LINK_STD_HOST_NC_9540)) + return 0; + + ab->previous_link_status_state = lsts; + + switch (lsts) { + case USB_LINK_ACA_RID_B_9540: + event = UX500_MUSB_RIDB; + case USB_LINK_NOT_CONFIGURED_9540: + case USB_LINK_RESERVED0_9540: + case USB_LINK_RESERVED1_9540: + case USB_LINK_RESERVED2_9540: + case USB_LINK_RESERVED3_9540: + if (ab->mode == USB_PERIPHERAL) + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_CLEAN, &ab->vbus_draw); + ab->mode = USB_IDLE; + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + if (event != UX500_MUSB_RIDB) + event = UX500_MUSB_NONE; + /* Fallback to default B_IDLE as nothing is connected. */ + ab->phy.state = OTG_STATE_B_IDLE; + break; + + case USB_LINK_ACA_RID_C_NM_9540: + event = UX500_MUSB_RIDC; + case USB_LINK_STD_HOST_NC_9540: + case USB_LINK_STD_HOST_C_NS_9540: + case USB_LINK_STD_HOST_C_S_9540: + case USB_LINK_CDP_9540: + if (ab->mode == USB_HOST) { + ab->mode = USB_PERIPHERAL; + ab8500_usb_host_phy_dis(ab); + ab8500_usb_peri_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + } + if (ab->mode == USB_IDLE) { + ab->mode = USB_PERIPHERAL; + ab8500_usb_peri_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + } + if (event != UX500_MUSB_RIDC) + event = UX500_MUSB_VBUS; + break; + + case USB_LINK_ACA_RID_A_9540: + event = UX500_MUSB_RIDA; + case USB_LINK_HM_IDGND_9540: + case USB_LINK_STD_UPSTREAM_9540: + if (ab->mode == USB_PERIPHERAL) { + ab->mode = USB_HOST; + ab8500_usb_peri_phy_dis(ab); + ab8500_usb_host_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + } + if (ab->mode == USB_IDLE) { + ab->mode = USB_HOST; + ab8500_usb_host_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + } + ab->phy.otg->default_a = true; + if (event != UX500_MUSB_RIDA) + event = UX500_MUSB_ID; + + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + break; + + case USB_LINK_DEDICATED_CHG_9540: + ab->mode = USB_DEDICATED_CHG; + event = UX500_MUSB_CHARGER; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + break; + + case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540: + case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540: + if (!(is_ab9540_2p0_or_earlier(ab->ab8500))) { + event = UX500_MUSB_NONE; + if (ab->mode == USB_HOST) { + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + ab8500_usb_host_phy_dis(ab); + ab->mode = USB_IDLE; + } + if (ab->mode == USB_PERIPHERAL) { + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + ab8500_usb_peri_phy_dis(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_CLEAN, + &ab->vbus_draw); + ab->mode = USB_IDLE; + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + } + } + break; + + default: + break; + } + + return 0; +} + +static int ab8540_usb_link_status_update(struct ab8500_usb *ab, + enum ab8540_usb_link_status lsts) +{ + enum ux500_musb_vbus_id_status event = 0; + + dev_dbg(ab->dev, "ab8540_usb_link_status_update %d\n", lsts); + + if (ab->enabled_charging_detection) { + /* Disable USB Charger detection */ + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8540_VBUS_CTRL_REG, + AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, 0x00); + ab->enabled_charging_detection = false; + } + + /* + * Spurious link_status interrupts are seen in case of a + * disconnection of a device in IDGND and RIDA stage + */ + if (ab->previous_link_status_state == USB_LINK_HM_IDGND_8540 && + (lsts == USB_LINK_STD_HOST_C_NS_8540 || + lsts == USB_LINK_STD_HOST_NC_8540)) + return 0; + + if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_8540 && + (lsts == USB_LINK_STD_HOST_NC_8540)) + return 0; + + ab->previous_link_status_state = lsts; + + switch (lsts) { + case USB_LINK_ACA_RID_B_8540: + event = UX500_MUSB_RIDB; + case USB_LINK_NOT_CONFIGURED_8540: + case USB_LINK_RESERVED0_8540: + case USB_LINK_RESERVED1_8540: + case USB_LINK_RESERVED2_8540: + case USB_LINK_RESERVED3_8540: + ab->mode = USB_IDLE; + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + if (event != UX500_MUSB_RIDB) + event = UX500_MUSB_NONE; + /* + * Fallback to default B_IDLE as nothing + * is connected + */ + ab->phy.state = OTG_STATE_B_IDLE; + break; + + case USB_LINK_ACA_RID_C_NM_8540: + event = UX500_MUSB_RIDC; + case USB_LINK_STD_HOST_NC_8540: + case USB_LINK_STD_HOST_C_NS_8540: + case USB_LINK_STD_HOST_C_S_8540: + case USB_LINK_CDP_8540: + if (ab->mode == USB_IDLE) { + ab->mode = USB_PERIPHERAL; + ab8500_usb_peri_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + } + if (event != UX500_MUSB_RIDC) + event = UX500_MUSB_VBUS; + break; + + case USB_LINK_ACA_RID_A_8540: + case USB_LINK_ACA_DOCK_CHGR_8540: + event = UX500_MUSB_RIDA; + case USB_LINK_HM_IDGND_8540: + case USB_LINK_STD_UPSTREAM_8540: + if (ab->mode == USB_IDLE) { + ab->mode = USB_HOST; + ab8500_usb_host_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + } + ab->phy.otg->default_a = true; + if (event != UX500_MUSB_RIDA) + event = UX500_MUSB_ID; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + break; + + case USB_LINK_DEDICATED_CHG_8540: + ab->mode = USB_DEDICATED_CHG; + event = UX500_MUSB_CHARGER; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + break; + + case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540: + case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540: + event = UX500_MUSB_NONE; + if (ab->mode == USB_HOST) { + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + ab8500_usb_host_phy_dis(ab); + ab->mode = USB_IDLE; + } + if (ab->mode == USB_PERIPHERAL) { + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + ab8500_usb_peri_phy_dis(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_CLEAN, &ab->vbus_draw); + ab->mode = USB_IDLE; + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + } + break; + + default: + event = UX500_MUSB_NONE; + break; + } + + return 0; +} + static int ab8505_usb_link_status_update(struct ab8500_usb *ab, enum ab8505_usb_link_status lsts) { @@ -498,6 +859,20 @@ static int abx500_usb_link_status_update(struct ab8500_usb *ab) AB8500_USB, AB8505_USB_LINE_STAT_REG, ®); lsts = (reg >> 3) & 0x1F; ret = ab8505_usb_link_status_update(ab, lsts); + } else if (is_ab8540(ab->ab8500)) { + enum ab8540_usb_link_status lsts; + + abx500_get_register_interruptible(ab->dev, + AB8500_USB, AB8540_USB_LINK_STAT_REG, ®); + lsts = (reg >> 3) & 0xFF; + ret = ab8540_usb_link_status_update(ab, lsts); + } else if (is_ab9540(ab->ab8500)) { + enum ab9540_usb_link_status lsts; + + abx500_get_register_interruptible(ab->dev, + AB8500_USB, AB9540_USB_LINK_STAT_REG, ®); + lsts = (reg >> 3) & 0xFF; + ret = ab9540_usb_link_status_update(ab, lsts); } return ret; @@ -553,7 +928,7 @@ static irqreturn_t ab8500_usb_disconnect_irq(int irq, void *data) static irqreturn_t ab8500_usb_link_status_irq(int irq, void *data) { - struct ab8500_usb *ab = (struct ab8500_usb *) data; + struct ab8500_usb *ab = (struct ab8500_usb *)data; abx500_usb_link_status_update(ab); @@ -572,6 +947,69 @@ static void ab8500_usb_phy_disable_work(struct work_struct *work) ab8500_usb_peri_phy_dis(ab); } +/* Check if VBUS is set and linkstatus has not detected a cable. */ +static bool ab8500_usb_check_vbus_status(struct ab8500_usb *ab) +{ + u8 isource2; + u8 reg; + enum ab8540_usb_link_status lsts; + + abx500_get_register_interruptible(ab->dev, + AB8500_INTERRUPT, AB8500_IT_SOURCE2_REG, + &isource2); + + /* If Vbus is below 3.6V abort */ + if (!(isource2 & AB8500_BIT_SOURCE2_VBUSDET)) + return false; + + abx500_get_register_interruptible(ab->dev, + AB8500_USB, AB8540_USB_LINK_STAT_REG, + ®); + + lsts = (reg >> 3) & 0xFF; + + /* Check if linkstatus has detected a cable */ + if (lsts) + return false; + + return true; +} + +/* re-trigger charger detection again with watchdog re-kick. */ +static void ab8500_usb_vbus_turn_on_event_work(struct work_struct *work) +{ + struct ab8500_usb *ab = container_of(work, struct ab8500_usb, + vbus_event_work); + + if (ab->mode != USB_IDLE) + return; + + abx500_set_register_interruptible(ab->dev, + AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, + AB8500_BIT_WD_CTRL_ENABLE); + + udelay(100); + + abx500_set_register_interruptible(ab->dev, + AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, + AB8500_BIT_WD_CTRL_ENABLE | AB8500_BIT_WD_CTRL_KICK); + + udelay(100); + + /* Disable Main watchdog */ + abx500_set_register_interruptible(ab->dev, + AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, + 0x0); + + /* Enable USB Charger detection */ + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8540_VBUS_CTRL_REG, + AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, + AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA); + + ab->enabled_charging_detection = true; +} + static unsigned ab8500_eyediagram_workaroud(struct ab8500_usb *ab, unsigned mA) { /* @@ -627,7 +1065,7 @@ static int ab8500_usb_set_peripheral(struct usb_otg *otg, * is fixed. */ - if ((ab->mode != USB_IDLE) && (!gadget)) { + if ((ab->mode != USB_IDLE) && !gadget) { ab->mode = USB_IDLE; schedule_work(&ab->phy_dis_work); } @@ -651,7 +1089,7 @@ static int ab8500_usb_set_host(struct usb_otg *otg, struct usb_bus *host) * is fixed. */ - if ((ab->mode != USB_IDLE) && (!host)) { + if ((ab->mode != USB_IDLE) && !host) { ab->mode = USB_IDLE; schedule_work(&ab->phy_dis_work); } @@ -659,6 +1097,33 @@ static int ab8500_usb_set_host(struct usb_otg *otg, struct usb_bus *host) return 0; } +static void ab8500_usb_restart_phy(struct ab8500_usb *ab) +{ + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_DEVICE_EN, + AB8500_BIT_PHY_CTRL_DEVICE_EN); + + udelay(100); + + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_DEVICE_EN, + 0); + + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_HOST_EN, + AB8500_BIT_PHY_CTRL_HOST_EN); + + udelay(100); + + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_HOST_EN, + 0); +} + static int ab8500_usb_regulator_get(struct ab8500_usb *ab) { int err; @@ -693,48 +1158,197 @@ static int ab8500_usb_irq_setup(struct platform_device *pdev, int err; int irq; - irq = platform_get_irq_byname(pdev, "USB_LINK_STATUS"); - if (irq < 0) { - dev_err(&pdev->dev, "Link status irq not found\n"); - return irq; - } - err = devm_request_threaded_irq(&pdev->dev, irq, NULL, - ab8500_usb_link_status_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, "usb-link-status", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for link status irq\n"); - return err; + if (ab->flags & AB8500_USB_FLAG_USE_LINK_STATUS_IRQ) { + irq = platform_get_irq_byname(pdev, "USB_LINK_STATUS"); + if (irq < 0) { + dev_err(&pdev->dev, "Link status irq not found\n"); + return irq; + } + err = devm_request_threaded_irq(&pdev->dev, irq, NULL, + ab8500_usb_link_status_irq, + IRQF_NO_SUSPEND | IRQF_SHARED, + "usb-link-status", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for link status irq\n"); + return err; + } } - irq = platform_get_irq_byname(pdev, "ID_WAKEUP_F"); - if (irq < 0) { - dev_err(&pdev->dev, "ID fall irq not found\n"); - return irq; - } - err = devm_request_threaded_irq(&pdev->dev, irq, NULL, - ab8500_usb_disconnect_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, "usb-id-fall", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for ID fall irq\n"); - return err; + if (ab->flags & AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ) { + irq = platform_get_irq_byname(pdev, "ID_WAKEUP_F"); + if (irq < 0) { + dev_err(&pdev->dev, "ID fall irq not found\n"); + return irq; + } + err = devm_request_threaded_irq(&pdev->dev, irq, NULL, + ab8500_usb_disconnect_irq, + IRQF_NO_SUSPEND | IRQF_SHARED, + "usb-id-fall", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for ID fall irq\n"); + return err; + } } - irq = platform_get_irq_byname(pdev, "VBUS_DET_F"); - if (irq < 0) { - dev_err(&pdev->dev, "VBUS fall irq not found\n"); - return irq; - } - err = devm_request_threaded_irq(&pdev->dev, irq, NULL, - ab8500_usb_disconnect_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, "usb-vbus-fall", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for Vbus fall irq\n"); - return err; + if (ab->flags & AB8500_USB_FLAG_USE_VBUS_DET_IRQ) { + irq = platform_get_irq_byname(pdev, "VBUS_DET_F"); + if (irq < 0) { + dev_err(&pdev->dev, "VBUS fall irq not found\n"); + return irq; + } + err = devm_request_threaded_irq(&pdev->dev, irq, NULL, + ab8500_usb_disconnect_irq, + IRQF_NO_SUSPEND | IRQF_SHARED, + "usb-vbus-fall", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for Vbus fall irq\n"); + return err; + } } return 0; } +static void ab8500_usb_set_ab8500_tuning_values(struct ab8500_usb *ab) +{ + int err; + + /* Enable the PBT/Bank 0x12 access */ + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); + if (err < 0) + dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x00); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x78); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", + err); + + /* Switch to normal mode/disable Bank 0x12 access */ + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); + if (err < 0) + dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", + err); +} + +static void ab8500_usb_set_ab8505_tuning_values(struct ab8500_usb *ab) +{ + int err; + + /* Enable the PBT/Bank 0x12 access */ + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, + 0x01, 0x01); + if (err < 0) + dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", + err); + + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE1, + 0xC8, 0xC8); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", + err); + + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE2, + 0x60, 0x60); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", + err); + + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE3, + 0xFC, 0x80); + + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", + err); + + /* Switch to normal mode/disable Bank 0x12 access */ + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, + 0x00, 0x00); + if (err < 0) + dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", + err); +} + +static void ab8500_usb_set_ab8540_tuning_values(struct ab8500_usb *ab) +{ + int err; + + err = abx500_set_register_interruptible(ab->dev, + AB8540_DEBUG, AB8500_USB_PHY_TUNE1, 0xCC); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE1 register ret=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8540_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE2 register ret=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8540_DEBUG, AB8500_USB_PHY_TUNE3, 0x90); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE3 regester ret=%d\n", + err); +} + +static void ab8500_usb_set_ab9540_tuning_values(struct ab8500_usb *ab) +{ + int err; + + /* Enable the PBT/Bank 0x12 access */ + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); + if (err < 0) + dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x80); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", + err); + + /* Switch to normal mode/disable Bank 0x12 access */ + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); + if (err < 0) + dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", + err); +} + static int ab8500_usb_probe(struct platform_device *pdev) { struct ab8500_usb *ab; @@ -772,6 +1386,33 @@ static int ab8500_usb_probe(struct platform_device *pdev) otg->set_host = ab8500_usb_set_host; otg->set_peripheral = ab8500_usb_set_peripheral; + if (is_ab8500(ab->ab8500)) { + ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | + AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | + AB8500_USB_FLAG_USE_VBUS_DET_IRQ | + AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + } else if (is_ab8505(ab->ab8500)) { + ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | + AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | + AB8500_USB_FLAG_USE_VBUS_DET_IRQ | + AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + } else if (is_ab8540(ab->ab8500)) { + ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | + AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS | + AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK | + AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + } else if (is_ab9540(ab->ab8500)) { + ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | + AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + if (is_ab9540_2p0_or_earlier(ab->ab8500)) + ab->flags |= AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | + AB8500_USB_FLAG_USE_VBUS_DET_IRQ; + } + + /* Disable regulator voltage setting for AB8500 <= v2.0 */ + if (is_ab8500_2p0_or_earlier(ab->ab8500)) + ab->flags &= ~AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + platform_set_drvdata(pdev, ab); ATOMIC_INIT_NOTIFIER_HEAD(&ab->phy.notifier); @@ -779,10 +1420,18 @@ static int ab8500_usb_probe(struct platform_device *pdev) /* all: Disable phy when called from set_host and set_peripheral */ INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work); + INIT_WORK(&ab->vbus_event_work, ab8500_usb_vbus_turn_on_event_work); + err = ab8500_usb_regulator_get(ab); if (err) return err; + ab->sysclk = devm_clk_get(ab->dev, "sysclk"); + if (IS_ERR(ab->sysclk)) { + dev_err(ab->dev, "Could not get sysclk.\n"); + return PTR_ERR(ab->sysclk); + } + err = ab8500_usb_irq_setup(pdev, ab); if (err < 0) return err; @@ -793,85 +1442,33 @@ static int ab8500_usb_probe(struct platform_device *pdev) return err; } - /* Phy tuning values for AB8500 */ - if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { - /* Enable the PBT/Bank 0x12 access */ - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); - if (err < 0) - dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x00); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x78); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", - err); - - /* Switch to normal mode/disable Bank 0x12 access */ - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); - if (err < 0) - dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", - err); - } - - /* Phy tuning values for AB8505 */ - if (is_ab8505(ab->ab8500)) { - /* Enable the PBT/Bank 0x12 access */ - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, - 0x01, 0x01); - if (err < 0) - dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", - err); - - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE1, - 0xC8, 0xC8); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", - err); - - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE2, - 0x60, 0x60); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", - err); - - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE3, - 0xFC, 0x80); - - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", - err); - - /* Switch to normal mode/disable Bank 0x12 access */ - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, - 0x00, 0x00); - if (err < 0) - dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", - err); - } + if (is_ab8500(ab->ab8500) && !is_ab8500_2p0_or_earlier(ab->ab8500)) + /* Phy tuning values for AB8500 > v2.0 */ + ab8500_usb_set_ab8500_tuning_values(ab); + else if (is_ab8505(ab->ab8500)) + /* Phy tuning values for AB8505 */ + ab8500_usb_set_ab8505_tuning_values(ab); + else if (is_ab8540(ab->ab8500)) + /* Phy tuning values for AB8540 */ + ab8500_usb_set_ab8540_tuning_values(ab); + else if (is_ab9540(ab->ab8500)) + /* Phy tuning values for AB9540 */ + ab8500_usb_set_ab9540_tuning_values(ab); /* Needed to enable ID detection. */ ab8500_usb_wd_workaround(ab); + /* + * This is required for usb-link-status to work properly when a + * cable is connected at boot time. + */ + ab8500_usb_restart_phy(ab); + + if (ab->flags & AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS) { + if (ab8500_usb_check_vbus_status(ab)) + schedule_work(&ab->vbus_event_work); + } + abx500_usb_link_status_update(ab); dev_info(&pdev->dev, "revision 0x%2x driver initialized\n", rev); @@ -884,6 +1481,7 @@ static int ab8500_usb_remove(struct platform_device *pdev) struct ab8500_usb *ab = platform_get_drvdata(pdev); cancel_work_sync(&ab->phy_dis_work); + cancel_work_sync(&ab->vbus_event_work); usb_remove_phy(&ab->phy); @@ -895,11 +1493,20 @@ static int ab8500_usb_remove(struct platform_device *pdev) return 0; } +static struct platform_device_id ab8500_usb_devtype[] = { + { .name = "ab8500-usb", }, + { .name = "ab8540-usb", }, + { .name = "ab9540-usb", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(platform, ab8500_usb_devtype); + static struct platform_driver ab8500_usb_driver = { .probe = ab8500_usb_probe, .remove = ab8500_usb_remove, + .id_table = ab8500_usb_devtype, .driver = { - .name = "ab8500-usb", + .name = "abx5x0-usb", .owner = THIS_MODULE, }, }; @@ -916,7 +1523,6 @@ static void __exit ab8500_usb_exit(void) } module_exit(ab8500_usb_exit); -MODULE_ALIAS("platform:ab8500_usb"); MODULE_AUTHOR("ST-Ericsson AB"); -MODULE_DESCRIPTION("AB8500 usb transceiver driver"); +MODULE_DESCRIPTION("AB8500 family usb transceiver driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/phy/phy-am335x-control.c b/drivers/usb/phy/phy-am335x-control.c new file mode 100644 index 000000000000..22cf07d62e4c --- /dev/null +++ b/drivers/usb/phy/phy-am335x-control.c @@ -0,0 +1,137 @@ +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/err.h> +#include <linux/of.h> +#include <linux/io.h> + +struct phy_control { + void (*phy_power)(struct phy_control *phy_ctrl, u32 id, bool on); + void (*phy_wkup)(struct phy_control *phy_ctrl, u32 id, bool on); +}; + +struct am335x_control_usb { + struct device *dev; + void __iomem *phy_reg; + void __iomem *wkup; + spinlock_t lock; + struct phy_control phy_ctrl; +}; + +#define AM335X_USB0_CTRL 0x0 +#define AM335X_USB1_CTRL 0x8 +#define AM335x_USB_WKUP 0x0 + +#define USBPHY_CM_PWRDN (1 << 0) +#define USBPHY_OTG_PWRDN (1 << 1) +#define USBPHY_OTGVDET_EN (1 << 19) +#define USBPHY_OTGSESSEND_EN (1 << 20) + +static void am335x_phy_power(struct phy_control *phy_ctrl, u32 id, bool on) +{ + struct am335x_control_usb *usb_ctrl; + u32 val; + u32 reg; + + usb_ctrl = container_of(phy_ctrl, struct am335x_control_usb, phy_ctrl); + + switch (id) { + case 0: + reg = AM335X_USB0_CTRL; + break; + case 1: + reg = AM335X_USB1_CTRL; + break; + default: + WARN_ON(1); + return; + } + + val = readl(usb_ctrl->phy_reg + reg); + if (on) { + val &= ~(USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN); + val |= USBPHY_OTGVDET_EN | USBPHY_OTGSESSEND_EN; + } else { + val |= USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN; + } + + writel(val, usb_ctrl->phy_reg + reg); +} + +static const struct phy_control ctrl_am335x = { + .phy_power = am335x_phy_power, +}; + +static const struct of_device_id omap_control_usb_id_table[] = { + { .compatible = "ti,am335x-usb-ctrl-module", .data = &ctrl_am335x }, + {} +}; +MODULE_DEVICE_TABLE(of, omap_control_usb_id_table); + +static struct platform_driver am335x_control_driver; +static int match(struct device *dev, void *data) +{ + struct device_node *node = (struct device_node *)data; + return dev->of_node == node && + dev->driver == &am335x_control_driver.driver; +} + +struct phy_control *am335x_get_phy_control(struct device *dev) +{ + struct device_node *node; + struct am335x_control_usb *ctrl_usb; + + node = of_parse_phandle(dev->of_node, "ti,ctrl_mod", 0); + if (!node) + return NULL; + + dev = bus_find_device(&platform_bus_type, NULL, node, match); + ctrl_usb = dev_get_drvdata(dev); + if (!ctrl_usb) + return NULL; + return &ctrl_usb->phy_ctrl; +} +EXPORT_SYMBOL_GPL(am335x_get_phy_control); + +static int am335x_control_usb_probe(struct platform_device *pdev) +{ + struct resource *res; + struct am335x_control_usb *ctrl_usb; + const struct of_device_id *of_id; + const struct phy_control *phy_ctrl; + + of_id = of_match_node(omap_control_usb_id_table, pdev->dev.of_node); + if (!of_id) + return -EINVAL; + + phy_ctrl = of_id->data; + + ctrl_usb = devm_kzalloc(&pdev->dev, sizeof(*ctrl_usb), GFP_KERNEL); + if (!ctrl_usb) { + dev_err(&pdev->dev, "unable to alloc memory for control usb\n"); + return -ENOMEM; + } + + ctrl_usb->dev = &pdev->dev; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl"); + ctrl_usb->phy_reg = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(ctrl_usb->phy_reg)) + return PTR_ERR(ctrl_usb->phy_reg); + spin_lock_init(&ctrl_usb->lock); + ctrl_usb->phy_ctrl = *phy_ctrl; + + dev_set_drvdata(ctrl_usb->dev, ctrl_usb); + return 0; +} + +static struct platform_driver am335x_control_driver = { + .probe = am335x_control_usb_probe, + .driver = { + .name = "am335x-control-usb", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(omap_control_usb_id_table), + }, +}; + +module_platform_driver(am335x_control_driver); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/phy/phy-am335x.c b/drivers/usb/phy/phy-am335x.c new file mode 100644 index 000000000000..c4d614d1f173 --- /dev/null +++ b/drivers/usb/phy/phy-am335x.c @@ -0,0 +1,99 @@ +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/usb/otg.h> +#include <linux/usb/usb_phy_gen_xceiv.h> +#include <linux/slab.h> +#include <linux/clk.h> +#include <linux/regulator/consumer.h> +#include <linux/of.h> +#include <linux/of_address.h> + +#include "am35x-phy-control.h" +#include "phy-generic.h" + +struct am335x_phy { + struct usb_phy_gen_xceiv usb_phy_gen; + struct phy_control *phy_ctrl; + int id; +}; + +static int am335x_init(struct usb_phy *phy) +{ + struct am335x_phy *am_phy = dev_get_drvdata(phy->dev); + + phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, true); + return 0; +} + +static void am335x_shutdown(struct usb_phy *phy) +{ + struct am335x_phy *am_phy = dev_get_drvdata(phy->dev); + + phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, false); +} + +static int am335x_phy_probe(struct platform_device *pdev) +{ + struct am335x_phy *am_phy; + struct device *dev = &pdev->dev; + int ret; + + am_phy = devm_kzalloc(dev, sizeof(*am_phy), GFP_KERNEL); + if (!am_phy) + return -ENOMEM; + + am_phy->phy_ctrl = am335x_get_phy_control(dev); + if (!am_phy->phy_ctrl) + return -EPROBE_DEFER; + am_phy->id = of_alias_get_id(pdev->dev.of_node, "phy"); + if (am_phy->id < 0) { + dev_err(&pdev->dev, "Missing PHY id: %d\n", am_phy->id); + return am_phy->id; + } + + ret = usb_phy_gen_create_phy(dev, &am_phy->usb_phy_gen, + USB_PHY_TYPE_USB2, 0, false, false); + if (ret) + return ret; + + ret = usb_add_phy_dev(&am_phy->usb_phy_gen.phy); + if (ret) + goto err_add; + am_phy->usb_phy_gen.phy.init = am335x_init; + am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown; + + platform_set_drvdata(pdev, am_phy); + return 0; + +err_add: + usb_phy_gen_cleanup_phy(&am_phy->usb_phy_gen); + return ret; +} + +static int am335x_phy_remove(struct platform_device *pdev) +{ + struct am335x_phy *am_phy = platform_get_drvdata(pdev); + + usb_remove_phy(&am_phy->usb_phy_gen.phy); + return 0; +} + +static const struct of_device_id am335x_phy_ids[] = { + { .compatible = "ti,am335x-usb-phy" }, + { } +}; +MODULE_DEVICE_TABLE(of, am335x_phy_ids); + +static struct platform_driver am335x_phy_driver = { + .probe = am335x_phy_probe, + .remove = am335x_phy_remove, + .driver = { + .name = "am335x-phy-driver", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(am335x_phy_ids), + }, +}; + +module_platform_driver(am335x_phy_driver); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c index e771bafb9f1d..fa7c9f9628b5 100644 --- a/drivers/usb/phy/phy-fsl-usb.c +++ b/drivers/usb/phy/phy-fsl-usb.c @@ -611,7 +611,7 @@ static int fsl_otg_set_peripheral(struct usb_otg *otg, otg_dev->fsm.b_bus_req = 1; /* start the gadget right away if the ID pin says Mini-B */ - DBG("ID pin=%d\n", otg_dev->fsm.id); + pr_debug("ID pin=%d\n", otg_dev->fsm.id); if (otg_dev->fsm.id == 1) { fsl_otg_start_host(&otg_dev->fsm, 0); otg_drv_vbus(&otg_dev->fsm, 0); @@ -684,7 +684,7 @@ static int fsl_otg_start_hnp(struct usb_otg *otg) if (otg_dev != fsl_otg_dev) return -ENODEV; - DBG("start_hnp...n"); + pr_debug("start_hnp...\n"); /* clear a_bus_req to enter a_suspend state */ otg_dev->fsm.a_bus_req = 0; @@ -834,7 +834,7 @@ int usb_otg_start(struct platform_device *pdev) int status; struct resource *res; u32 temp; - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); p_otg = container_of(otg_trans, struct fsl_otg, phy); fsm = &p_otg->fsm; @@ -941,7 +941,7 @@ int usb_otg_start(struct platform_device *pdev) p_otg->fsm.id = 0; } - DBG("initial ID pin=%d\n", p_otg->fsm.id); + pr_debug("initial ID pin=%d\n", p_otg->fsm.id); /* enable OTG ID pin interrupt */ temp = fsl_readl(&p_otg->dr_mem_map->otgsc); @@ -1105,7 +1105,7 @@ static int fsl_otg_probe(struct platform_device *pdev) { int ret; - if (!pdev->dev.platform_data) + if (!dev_get_platdata(&pdev->dev)) return -ENODEV; /* configure the OTG */ @@ -1137,7 +1137,7 @@ static int fsl_otg_probe(struct platform_device *pdev) static int fsl_otg_remove(struct platform_device *pdev) { - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); usb_remove_phy(&fsl_otg_dev->phy); free_irq(fsl_otg_dev->irq, fsl_otg_dev); diff --git a/drivers/usb/phy/phy-fsl-usb.h b/drivers/usb/phy/phy-fsl-usb.h index ca266280895d..e1859b8ef567 100644 --- a/drivers/usb/phy/phy-fsl-usb.h +++ b/drivers/usb/phy/phy-fsl-usb.h @@ -15,7 +15,7 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include "otg_fsm.h" +#include "phy-fsm-usb.h" #include <linux/usb/otg.h> #include <linux/ioctl.h> diff --git a/drivers/usb/phy/phy-fsm-usb.c b/drivers/usb/phy/phy-fsm-usb.c index c520b3548e7c..7f4596606e18 100644 --- a/drivers/usb/phy/phy-fsm-usb.c +++ b/drivers/usb/phy/phy-fsm-usb.c @@ -29,7 +29,7 @@ #include <linux/usb/gadget.h> #include <linux/usb/otg.h> -#include "phy-otg-fsm.h" +#include "phy-fsm-usb.h" /* Change USB protocol when there is a protocol change */ static int otg_set_protocol(struct otg_fsm *fsm, int protocol) diff --git a/drivers/usb/phy/phy-fsm-usb.h b/drivers/usb/phy/phy-fsm-usb.h index c30a2e1d9e46..fbe586206f33 100644 --- a/drivers/usb/phy/phy-fsm-usb.h +++ b/drivers/usb/phy/phy-fsm-usb.h @@ -15,18 +15,11 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ -#undef DEBUG #undef VERBOSE -#ifdef DEBUG -#define DBG(fmt, args...) printk(KERN_DEBUG "[%s] " fmt , \ - __func__, ## args) -#else -#define DBG(fmt, args...) do {} while (0) -#endif - #ifdef VERBOSE -#define VDBG DBG +#define VDBG(fmt, args...) pr_debug("[%s] " fmt , \ + __func__, ## args) #else #define VDBG(stuff...) do {} while (0) #endif diff --git a/drivers/usb/phy/phy-nop.c b/drivers/usb/phy/phy-generic.c index 638cc5dade35..efe59f3f7fda 100644 --- a/drivers/usb/phy/phy-nop.c +++ b/drivers/usb/phy/phy-generic.c @@ -30,19 +30,13 @@ #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/usb/otg.h> -#include <linux/usb/nop-usb-xceiv.h> +#include <linux/usb/usb_phy_gen_xceiv.h> #include <linux/slab.h> #include <linux/clk.h> #include <linux/regulator/consumer.h> #include <linux/of.h> -struct nop_usb_xceiv { - struct usb_phy phy; - struct device *dev; - struct clk *clk; - struct regulator *vcc; - struct regulator *reset; -}; +#include "phy-generic.h" static struct platform_device *pd; @@ -50,9 +44,9 @@ void usb_nop_xceiv_register(void) { if (pd) return; - pd = platform_device_register_simple("nop_usb_xceiv", -1, NULL, 0); + pd = platform_device_register_simple("usb_phy_gen_xceiv", -1, NULL, 0); if (!pd) { - printk(KERN_ERR "Unable to register usb nop transceiver\n"); + pr_err("Unable to register generic usb transceiver\n"); return; } } @@ -70,9 +64,9 @@ static int nop_set_suspend(struct usb_phy *x, int suspend) return 0; } -static int nop_init(struct usb_phy *phy) +int usb_gen_phy_init(struct usb_phy *phy) { - struct nop_usb_xceiv *nop = dev_get_drvdata(phy->dev); + struct usb_phy_gen_xceiv *nop = dev_get_drvdata(phy->dev); if (!IS_ERR(nop->vcc)) { if (regulator_enable(nop->vcc)) @@ -90,10 +84,11 @@ static int nop_init(struct usb_phy *phy) return 0; } +EXPORT_SYMBOL_GPL(usb_gen_phy_init); -static void nop_shutdown(struct usb_phy *phy) +void usb_gen_phy_shutdown(struct usb_phy *phy) { - struct nop_usb_xceiv *nop = dev_get_drvdata(phy->dev); + struct usb_phy_gen_xceiv *nop = dev_get_drvdata(phy->dev); if (!IS_ERR(nop->reset)) { /* Assert RESET */ @@ -109,6 +104,7 @@ static void nop_shutdown(struct usb_phy *phy) dev_err(phy->dev, "Failed to disable power\n"); } } +EXPORT_SYMBOL_GPL(usb_gen_phy_shutdown); static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) { @@ -139,52 +135,27 @@ static int nop_set_host(struct usb_otg *otg, struct usb_bus *host) return 0; } -static int nop_usb_xceiv_probe(struct platform_device *pdev) +int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_gen_xceiv *nop, + enum usb_phy_type type, u32 clk_rate, bool needs_vcc, + bool needs_reset) { - struct device *dev = &pdev->dev; - struct nop_usb_xceiv_platform_data *pdata = pdev->dev.platform_data; - struct nop_usb_xceiv *nop; - enum usb_phy_type type = USB_PHY_TYPE_USB2; int err; - u32 clk_rate = 0; - bool needs_vcc = false; - bool needs_reset = false; - - nop = devm_kzalloc(&pdev->dev, sizeof(*nop), GFP_KERNEL); - if (!nop) - return -ENOMEM; - nop->phy.otg = devm_kzalloc(&pdev->dev, sizeof(*nop->phy.otg), - GFP_KERNEL); + nop->phy.otg = devm_kzalloc(dev, sizeof(*nop->phy.otg), + GFP_KERNEL); if (!nop->phy.otg) return -ENOMEM; - if (dev->of_node) { - struct device_node *node = dev->of_node; - - if (of_property_read_u32(node, "clock-frequency", &clk_rate)) - clk_rate = 0; - - needs_vcc = of_property_read_bool(node, "vcc-supply"); - needs_reset = of_property_read_bool(node, "reset-supply"); - - } else if (pdata) { - type = pdata->type; - clk_rate = pdata->clk_rate; - needs_vcc = pdata->needs_vcc; - needs_reset = pdata->needs_reset; - } - - nop->clk = devm_clk_get(&pdev->dev, "main_clk"); + nop->clk = devm_clk_get(dev, "main_clk"); if (IS_ERR(nop->clk)) { - dev_dbg(&pdev->dev, "Can't get phy clock: %ld\n", + dev_dbg(dev, "Can't get phy clock: %ld\n", PTR_ERR(nop->clk)); } if (!IS_ERR(nop->clk) && clk_rate) { err = clk_set_rate(nop->clk, clk_rate); if (err) { - dev_err(&pdev->dev, "Error setting clock rate\n"); + dev_err(dev, "Error setting clock rate\n"); return err; } } @@ -192,33 +163,31 @@ static int nop_usb_xceiv_probe(struct platform_device *pdev) if (!IS_ERR(nop->clk)) { err = clk_prepare(nop->clk); if (err) { - dev_err(&pdev->dev, "Error preparing clock\n"); + dev_err(dev, "Error preparing clock\n"); return err; } } - nop->vcc = devm_regulator_get(&pdev->dev, "vcc"); + nop->vcc = devm_regulator_get(dev, "vcc"); if (IS_ERR(nop->vcc)) { - dev_dbg(&pdev->dev, "Error getting vcc regulator: %ld\n", + dev_dbg(dev, "Error getting vcc regulator: %ld\n", PTR_ERR(nop->vcc)); if (needs_vcc) return -EPROBE_DEFER; } - nop->reset = devm_regulator_get(&pdev->dev, "reset"); + nop->reset = devm_regulator_get(dev, "reset"); if (IS_ERR(nop->reset)) { - dev_dbg(&pdev->dev, "Error getting reset regulator: %ld\n", + dev_dbg(dev, "Error getting reset regulator: %ld\n", PTR_ERR(nop->reset)); if (needs_reset) return -EPROBE_DEFER; } - nop->dev = &pdev->dev; + nop->dev = dev; nop->phy.dev = nop->dev; nop->phy.label = "nop-xceiv"; nop->phy.set_suspend = nop_set_suspend; - nop->phy.init = nop_init; - nop->phy.shutdown = nop_shutdown; nop->phy.state = OTG_STATE_UNDEFINED; nop->phy.type = type; @@ -226,6 +195,59 @@ static int nop_usb_xceiv_probe(struct platform_device *pdev) nop->phy.otg->set_host = nop_set_host; nop->phy.otg->set_peripheral = nop_set_peripheral; + ATOMIC_INIT_NOTIFIER_HEAD(&nop->phy.notifier); + return 0; +} +EXPORT_SYMBOL_GPL(usb_phy_gen_create_phy); + +void usb_phy_gen_cleanup_phy(struct usb_phy_gen_xceiv *nop) +{ + if (!IS_ERR(nop->clk)) + clk_unprepare(nop->clk); +} +EXPORT_SYMBOL_GPL(usb_phy_gen_cleanup_phy); + +static int usb_phy_gen_xceiv_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct usb_phy_gen_xceiv_platform_data *pdata = + dev_get_platdata(&pdev->dev); + struct usb_phy_gen_xceiv *nop; + enum usb_phy_type type = USB_PHY_TYPE_USB2; + int err; + u32 clk_rate = 0; + bool needs_vcc = false; + bool needs_reset = false; + + if (dev->of_node) { + struct device_node *node = dev->of_node; + + if (of_property_read_u32(node, "clock-frequency", &clk_rate)) + clk_rate = 0; + + needs_vcc = of_property_read_bool(node, "vcc-supply"); + needs_reset = of_property_read_bool(node, "reset-supply"); + + } else if (pdata) { + type = pdata->type; + clk_rate = pdata->clk_rate; + needs_vcc = pdata->needs_vcc; + needs_reset = pdata->needs_reset; + } + + nop = devm_kzalloc(dev, sizeof(*nop), GFP_KERNEL); + if (!nop) + return -ENOMEM; + + + err = usb_phy_gen_create_phy(dev, nop, type, clk_rate, needs_vcc, + needs_reset); + if (err) + return err; + + nop->phy.init = usb_gen_phy_init; + nop->phy.shutdown = usb_gen_phy_shutdown; + err = usb_add_phy_dev(&nop->phy); if (err) { dev_err(&pdev->dev, "can't register transceiver, err: %d\n", @@ -235,23 +257,18 @@ static int nop_usb_xceiv_probe(struct platform_device *pdev) platform_set_drvdata(pdev, nop); - ATOMIC_INIT_NOTIFIER_HEAD(&nop->phy.notifier); - return 0; err_add: - if (!IS_ERR(nop->clk)) - clk_unprepare(nop->clk); + usb_phy_gen_cleanup_phy(nop); return err; } -static int nop_usb_xceiv_remove(struct platform_device *pdev) +static int usb_phy_gen_xceiv_remove(struct platform_device *pdev) { - struct nop_usb_xceiv *nop = platform_get_drvdata(pdev); - - if (!IS_ERR(nop->clk)) - clk_unprepare(nop->clk); + struct usb_phy_gen_xceiv *nop = platform_get_drvdata(pdev); + usb_phy_gen_cleanup_phy(nop); usb_remove_phy(&nop->phy); return 0; @@ -264,29 +281,29 @@ static const struct of_device_id nop_xceiv_dt_ids[] = { MODULE_DEVICE_TABLE(of, nop_xceiv_dt_ids); -static struct platform_driver nop_usb_xceiv_driver = { - .probe = nop_usb_xceiv_probe, - .remove = nop_usb_xceiv_remove, +static struct platform_driver usb_phy_gen_xceiv_driver = { + .probe = usb_phy_gen_xceiv_probe, + .remove = usb_phy_gen_xceiv_remove, .driver = { - .name = "nop_usb_xceiv", + .name = "usb_phy_gen_xceiv", .owner = THIS_MODULE, - .of_match_table = of_match_ptr(nop_xceiv_dt_ids), + .of_match_table = nop_xceiv_dt_ids, }, }; -static int __init nop_usb_xceiv_init(void) +static int __init usb_phy_gen_xceiv_init(void) { - return platform_driver_register(&nop_usb_xceiv_driver); + return platform_driver_register(&usb_phy_gen_xceiv_driver); } -subsys_initcall(nop_usb_xceiv_init); +subsys_initcall(usb_phy_gen_xceiv_init); -static void __exit nop_usb_xceiv_exit(void) +static void __exit usb_phy_gen_xceiv_exit(void) { - platform_driver_unregister(&nop_usb_xceiv_driver); + platform_driver_unregister(&usb_phy_gen_xceiv_driver); } -module_exit(nop_usb_xceiv_exit); +module_exit(usb_phy_gen_xceiv_exit); -MODULE_ALIAS("platform:nop_usb_xceiv"); +MODULE_ALIAS("platform:usb_phy_gen_xceiv"); MODULE_AUTHOR("Texas Instruments Inc"); MODULE_DESCRIPTION("NOP USB Transceiver driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/phy/phy-generic.h b/drivers/usb/phy/phy-generic.h new file mode 100644 index 000000000000..61687d5a965b --- /dev/null +++ b/drivers/usb/phy/phy-generic.h @@ -0,0 +1,20 @@ +#ifndef _PHY_GENERIC_H_ +#define _PHY_GENERIC_H_ + +struct usb_phy_gen_xceiv { + struct usb_phy phy; + struct device *dev; + struct clk *clk; + struct regulator *vcc; + struct regulator *reset; +}; + +int usb_gen_phy_init(struct usb_phy *phy); +void usb_gen_phy_shutdown(struct usb_phy *phy); + +int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_gen_xceiv *nop, + enum usb_phy_type type, u32 clk_rate, bool needs_vcc, + bool needs_reset); +void usb_phy_gen_cleanup_phy(struct usb_phy_gen_xceiv *nop); + +#endif diff --git a/drivers/usb/phy/phy-gpio-vbus-usb.c b/drivers/usb/phy/phy-gpio-vbus-usb.c index 8443335c2ea0..b2f29c9aebbf 100644 --- a/drivers/usb/phy/phy-gpio-vbus-usb.c +++ b/drivers/usb/phy/phy-gpio-vbus-usb.c @@ -101,7 +101,7 @@ static void gpio_vbus_work(struct work_struct *work) { struct gpio_vbus_data *gpio_vbus = container_of(work, struct gpio_vbus_data, work.work); - struct gpio_vbus_mach_info *pdata = gpio_vbus->dev->platform_data; + struct gpio_vbus_mach_info *pdata = dev_get_platdata(gpio_vbus->dev); int gpio, status, vbus; if (!gpio_vbus->phy.otg->gadget) @@ -155,7 +155,7 @@ static void gpio_vbus_work(struct work_struct *work) static irqreturn_t gpio_vbus_irq(int irq, void *data) { struct platform_device *pdev = data; - struct gpio_vbus_mach_info *pdata = pdev->dev.platform_data; + struct gpio_vbus_mach_info *pdata = dev_get_platdata(&pdev->dev); struct gpio_vbus_data *gpio_vbus = platform_get_drvdata(pdev); struct usb_otg *otg = gpio_vbus->phy.otg; @@ -182,7 +182,7 @@ static int gpio_vbus_set_peripheral(struct usb_otg *otg, gpio_vbus = container_of(otg->phy, struct gpio_vbus_data, phy); pdev = to_platform_device(gpio_vbus->dev); - pdata = gpio_vbus->dev->platform_data; + pdata = dev_get_platdata(gpio_vbus->dev); gpio = pdata->gpio_pullup; if (!gadget) { @@ -243,7 +243,7 @@ static int gpio_vbus_set_suspend(struct usb_phy *phy, int suspend) static int __init gpio_vbus_probe(struct platform_device *pdev) { - struct gpio_vbus_mach_info *pdata = pdev->dev.platform_data; + struct gpio_vbus_mach_info *pdata = dev_get_platdata(&pdev->dev); struct gpio_vbus_data *gpio_vbus; struct resource *res; int err, gpio, irq; @@ -352,7 +352,7 @@ err_gpio: static int __exit gpio_vbus_remove(struct platform_device *pdev) { struct gpio_vbus_data *gpio_vbus = platform_get_drvdata(pdev); - struct gpio_vbus_mach_info *pdata = pdev->dev.platform_data; + struct gpio_vbus_mach_info *pdata = dev_get_platdata(&pdev->dev); int gpio = pdata->gpio_vbus; device_init_wakeup(&pdev->dev, 0); diff --git a/drivers/usb/phy/phy-isp1301-omap.c b/drivers/usb/phy/phy-isp1301-omap.c index ae481afcb3ec..d3a5160e4cc7 100644 --- a/drivers/usb/phy/phy-isp1301-omap.c +++ b/drivers/usb/phy/phy-isp1301-omap.c @@ -40,9 +40,7 @@ #include <mach/usb.h> -#ifndef DEBUG -#undef VERBOSE -#endif +#undef VERBOSE #define DRIVER_VERSION "24 August 2004" @@ -387,7 +385,6 @@ static void b_idle(struct isp1301 *isp, const char *tag) static void dump_regs(struct isp1301 *isp, const char *label) { -#ifdef DEBUG u8 ctrl = isp1301_get_u8(isp, ISP1301_OTG_CONTROL_1); u8 status = isp1301_get_u8(isp, ISP1301_OTG_STATUS); u8 src = isp1301_get_u8(isp, ISP1301_INTERRUPT_SOURCE); @@ -396,7 +393,6 @@ dump_regs(struct isp1301 *isp, const char *label) omap_readl(OTG_CTRL), label, state_name(isp), ctrl, status, src); /* mode control and irq enables don't change much */ -#endif } /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c index 749fbf41fb6f..e9d4cd960ecd 100644 --- a/drivers/usb/phy/phy-msm-usb.c +++ b/drivers/usb/phy/phy-msm-usb.c @@ -514,13 +514,13 @@ static int msm_otg_suspend(struct msm_otg *motg) motg->pdata->otg_control == OTG_PMIC_CONTROL) writel(readl(USB_PHY_CTRL) | PHY_RETEN, USB_PHY_CTRL); - clk_disable(motg->pclk); - clk_disable(motg->clk); + clk_disable_unprepare(motg->pclk); + clk_disable_unprepare(motg->clk); if (motg->core_clk) - clk_disable(motg->core_clk); + clk_disable_unprepare(motg->core_clk); if (!IS_ERR(motg->pclk_src)) - clk_disable(motg->pclk_src); + clk_disable_unprepare(motg->pclk_src); if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && motg->pdata->otg_control == OTG_PMIC_CONTROL) { @@ -552,12 +552,12 @@ static int msm_otg_resume(struct msm_otg *motg) return 0; if (!IS_ERR(motg->pclk_src)) - clk_enable(motg->pclk_src); + clk_prepare_enable(motg->pclk_src); - clk_enable(motg->pclk); - clk_enable(motg->clk); + clk_prepare_enable(motg->pclk); + clk_prepare_enable(motg->clk); if (motg->core_clk) - clk_enable(motg->core_clk); + clk_prepare_enable(motg->core_clk); if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && motg->pdata->otg_control == OTG_PMIC_CONTROL) { @@ -1419,7 +1419,7 @@ static int __init msm_otg_probe(struct platform_device *pdev) struct usb_phy *phy; dev_info(&pdev->dev, "msm_otg probe\n"); - if (!pdev->dev.platform_data) { + if (!dev_get_platdata(&pdev->dev)) { dev_err(&pdev->dev, "No platform data given. Bailing out\n"); return -ENODEV; } @@ -1436,7 +1436,7 @@ static int __init msm_otg_probe(struct platform_device *pdev) return -ENOMEM; } - motg->pdata = pdev->dev.platform_data; + motg->pdata = dev_get_platdata(&pdev->dev); phy = &motg->phy; phy->dev = &pdev->dev; @@ -1468,7 +1468,7 @@ static int __init msm_otg_probe(struct platform_device *pdev) if (IS_ERR(motg->pclk_src)) goto put_clk; clk_set_rate(motg->pclk_src, INT_MAX); - clk_enable(motg->pclk_src); + clk_prepare_enable(motg->pclk_src); } else motg->pclk_src = ERR_PTR(-ENOENT); @@ -1511,8 +1511,8 @@ static int __init msm_otg_probe(struct platform_device *pdev) goto free_regs; } - clk_enable(motg->clk); - clk_enable(motg->pclk); + clk_prepare_enable(motg->clk); + clk_prepare_enable(motg->pclk); ret = msm_hsusb_init_vddcx(motg, 1); if (ret) { @@ -1532,7 +1532,7 @@ static int __init msm_otg_probe(struct platform_device *pdev) } if (motg->core_clk) - clk_enable(motg->core_clk); + clk_prepare_enable(motg->core_clk); writel(0, USB_USBINTR); writel(0, USB_OTGSC); @@ -1579,8 +1579,8 @@ static int __init msm_otg_probe(struct platform_device *pdev) free_irq: free_irq(motg->irq, motg); disable_clks: - clk_disable(motg->pclk); - clk_disable(motg->clk); + clk_disable_unprepare(motg->pclk); + clk_disable_unprepare(motg->clk); ldo_exit: msm_hsusb_ldo_init(motg, 0); vddcx_exit: @@ -1593,7 +1593,7 @@ put_core_clk: clk_put(motg->pclk); put_pclk_src: if (!IS_ERR(motg->pclk_src)) { - clk_disable(motg->pclk_src); + clk_disable_unprepare(motg->pclk_src); clk_put(motg->pclk_src); } put_clk: @@ -1643,12 +1643,12 @@ static int msm_otg_remove(struct platform_device *pdev) if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) dev_err(phy->dev, "Unable to suspend PHY\n"); - clk_disable(motg->pclk); - clk_disable(motg->clk); + clk_disable_unprepare(motg->pclk); + clk_disable_unprepare(motg->clk); if (motg->core_clk) - clk_disable(motg->core_clk); + clk_disable_unprepare(motg->core_clk); if (!IS_ERR(motg->pclk_src)) { - clk_disable(motg->pclk_src); + clk_disable_unprepare(motg->pclk_src); clk_put(motg->pclk_src); } msm_hsusb_ldo_init(motg, 0); diff --git a/drivers/usb/phy/phy-mv-u3d-usb.c b/drivers/usb/phy/phy-mv-u3d-usb.c index 1568ea63e338..d317903022bf 100644 --- a/drivers/usb/phy/phy-mv-u3d-usb.c +++ b/drivers/usb/phy/phy-mv-u3d-usb.c @@ -82,7 +82,7 @@ static void mv_u3d_phy_write(void __iomem *base, u32 reg, u32 value) writel_relaxed(value, data); } -void mv_u3d_phy_shutdown(struct usb_phy *phy) +static void mv_u3d_phy_shutdown(struct usb_phy *phy) { struct mv_u3d_phy *mv_u3d_phy; void __iomem *base; @@ -271,7 +271,7 @@ static int mv_u3d_phy_probe(struct platform_device *pdev) void __iomem *phy_base; int ret; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); if (!pdata) { dev_err(&pdev->dev, "%s: no platform data defined\n", __func__); return -EINVAL; diff --git a/drivers/usb/phy/phy-mv-usb.c b/drivers/usb/phy/phy-mv-usb.c index 4a6b03c73876..98f6ac6a78ea 100644 --- a/drivers/usb/phy/phy-mv-usb.c +++ b/drivers/usb/phy/phy-mv-usb.c @@ -653,7 +653,7 @@ static struct attribute_group inputs_attr_group = { .attrs = inputs_attrs, }; -int mv_otg_remove(struct platform_device *pdev) +static int mv_otg_remove(struct platform_device *pdev) { struct mv_otg *mvotg = platform_get_drvdata(pdev); @@ -673,7 +673,7 @@ int mv_otg_remove(struct platform_device *pdev) static int mv_otg_probe(struct platform_device *pdev) { - struct mv_usb_platform_data *pdata = pdev->dev.platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); struct mv_otg *mvotg; struct usb_otg *otg; struct resource *r; @@ -893,7 +893,7 @@ static int mv_otg_resume(struct platform_device *pdev) static struct platform_driver mv_otg_driver = { .probe = mv_otg_probe, - .remove = __exit_p(mv_otg_remove), + .remove = mv_otg_remove, .driver = { .owner = THIS_MODULE, .name = driver_name, diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index bd601c537c8d..fdd33b44dbd3 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -41,11 +41,14 @@ struct mxs_phy { #define to_mxs_phy(p) container_of((p), struct mxs_phy, phy) -static void mxs_phy_hw_init(struct mxs_phy *mxs_phy) +static int mxs_phy_hw_init(struct mxs_phy *mxs_phy) { + int ret; void __iomem *base = mxs_phy->phy.io_priv; - stmp_reset_block(base + HW_USBPHY_CTRL); + ret = stmp_reset_block(base + HW_USBPHY_CTRL); + if (ret) + return ret; /* Power up the PHY */ writel(0, base + HW_USBPHY_PWD); @@ -54,6 +57,8 @@ static void mxs_phy_hw_init(struct mxs_phy *mxs_phy) writel(BM_USBPHY_CTRL_ENUTMILEVEL2 | BM_USBPHY_CTRL_ENUTMILEVEL3, base + HW_USBPHY_CTRL_SET); + + return 0; } static int mxs_phy_init(struct usb_phy *phy) @@ -61,9 +66,7 @@ static int mxs_phy_init(struct usb_phy *phy) struct mxs_phy *mxs_phy = to_mxs_phy(phy); clk_prepare_enable(mxs_phy->clk); - mxs_phy_hw_init(mxs_phy); - - return 0; + return mxs_phy_hw_init(mxs_phy); } static void mxs_phy_shutdown(struct usb_phy *phy) diff --git a/drivers/usb/phy/phy-omap-control.c b/drivers/usb/phy/phy-omap-control.c index 1419ceda9759..a4dda8e12562 100644 --- a/drivers/usb/phy/phy-omap-control.c +++ b/drivers/usb/phy/phy-omap-control.c @@ -197,7 +197,8 @@ static int omap_control_usb_probe(struct platform_device *pdev) { struct resource *res; struct device_node *np = pdev->dev.of_node; - struct omap_control_usb_platform_data *pdata = pdev->dev.platform_data; + struct omap_control_usb_platform_data *pdata = + dev_get_platdata(&pdev->dev); control_usb = devm_kzalloc(&pdev->dev, sizeof(*control_usb), GFP_KERNEL); diff --git a/drivers/usb/phy/phy-omap-usb2.c b/drivers/usb/phy/phy-omap-usb2.c index 844ab68f08d0..d266861d24f7 100644 --- a/drivers/usb/phy/phy-omap-usb2.c +++ b/drivers/usb/phy/phy-omap-usb2.c @@ -98,8 +98,8 @@ static int omap_usb_set_peripheral(struct usb_otg *otg, static int omap_usb2_suspend(struct usb_phy *x, int suspend) { - u32 ret; struct omap_usb *phy = phy_to_omapusb(x); + int ret; if (suspend && !phy->is_suspended) { omap_control_usb_phy_power(phy->control_dev, 0); @@ -108,8 +108,7 @@ static int omap_usb2_suspend(struct usb_phy *x, int suspend) } else if (!suspend && phy->is_suspended) { ret = pm_runtime_get_sync(phy->dev); if (ret < 0) { - dev_err(phy->dev, "get_sync failed with err %d\n", - ret); + dev_err(phy->dev, "get_sync failed with err %d\n", ret); return ret; } omap_control_usb_phy_power(phy->control_dev, 1); @@ -209,9 +208,9 @@ static int omap_usb2_runtime_suspend(struct device *dev) static int omap_usb2_runtime_resume(struct device *dev) { - u32 ret = 0; struct platform_device *pdev = to_platform_device(dev); struct omap_usb *phy = platform_get_drvdata(pdev); + int ret; ret = clk_enable(phy->wkupclk); if (ret < 0) { diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/usb/phy/phy-omap-usb3.c index a6e60b1e102e..fc15694d3031 100644 --- a/drivers/usb/phy/phy-omap-usb3.c +++ b/drivers/usb/phy/phy-omap-usb3.c @@ -27,7 +27,6 @@ #include <linux/delay.h> #include <linux/usb/omap_control_usb.h> -#define NUM_SYS_CLKS 5 #define PLL_STATUS 0x00000004 #define PLL_GO 0x00000008 #define PLL_CONFIGURATION1 0x0000000C @@ -57,23 +56,32 @@ */ # define PLL_IDLE_TIME 100; -enum sys_clk_rate { - CLK_RATE_UNDEFINED = -1, - CLK_RATE_12MHZ, - CLK_RATE_16MHZ, - CLK_RATE_19MHZ, - CLK_RATE_26MHZ, - CLK_RATE_38MHZ +struct usb_dpll_map { + unsigned long rate; + struct usb_dpll_params params; }; -static struct usb_dpll_params omap_usb3_dpll_params[NUM_SYS_CLKS] = { - {1250, 5, 4, 20, 0}, /* 12 MHz */ - {3125, 20, 4, 20, 0}, /* 16.8 MHz */ - {1172, 8, 4, 20, 65537}, /* 19.2 MHz */ - {1250, 12, 4, 20, 0}, /* 26 MHz */ - {3125, 47, 4, 20, 92843}, /* 38.4 MHz */ +static struct usb_dpll_map dpll_map[] = { + {12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */ + {16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */ + {19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */ + {20000000, {1000, 7, 4, 10, 0} }, /* 20 MHz */ + {26000000, {1250, 12, 4, 20, 0} }, /* 26 MHz */ + {38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */ }; +static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(dpll_map); i++) { + if (rate == dpll_map[i].rate) + return &dpll_map[i].params; + } + + return 0; +} + static int omap_usb3_suspend(struct usb_phy *x, int suspend) { struct omap_usb *phy = phy_to_omapusb(x); @@ -113,24 +121,6 @@ static int omap_usb3_suspend(struct usb_phy *x, int suspend) return 0; } -static inline enum sys_clk_rate __get_sys_clk_index(unsigned long rate) -{ - switch (rate) { - case 12000000: - return CLK_RATE_12MHZ; - case 16800000: - return CLK_RATE_16MHZ; - case 19200000: - return CLK_RATE_19MHZ; - case 26000000: - return CLK_RATE_26MHZ; - case 38400000: - return CLK_RATE_38MHZ; - default: - return CLK_RATE_UNDEFINED; - } -} - static void omap_usb_dpll_relock(struct omap_usb *phy) { u32 val; @@ -150,39 +140,39 @@ static int omap_usb_dpll_lock(struct omap_usb *phy) { u32 val; unsigned long rate; - enum sys_clk_rate clk_index; - - rate = clk_get_rate(phy->sys_clk); - clk_index = __get_sys_clk_index(rate); + struct usb_dpll_params *dpll_params; - if (clk_index == CLK_RATE_UNDEFINED) { - pr_err("dpll cannot be locked for sys clk freq:%luHz\n", rate); + rate = clk_get_rate(phy->sys_clk); + dpll_params = omap_usb3_get_dpll_params(rate); + if (!dpll_params) { + dev_err(phy->dev, + "No DPLL configuration for %lu Hz SYS CLK\n", rate); return -EINVAL; } val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); val &= ~PLL_REGN_MASK; - val |= omap_usb3_dpll_params[clk_index].n << PLL_REGN_SHIFT; + val |= dpll_params->n << PLL_REGN_SHIFT; omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); val &= ~PLL_SELFREQDCO_MASK; - val |= omap_usb3_dpll_params[clk_index].freq << PLL_SELFREQDCO_SHIFT; + val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT; omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); val &= ~PLL_REGM_MASK; - val |= omap_usb3_dpll_params[clk_index].m << PLL_REGM_SHIFT; + val |= dpll_params->m << PLL_REGM_SHIFT; omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); val &= ~PLL_REGM_F_MASK; - val |= omap_usb3_dpll_params[clk_index].mf << PLL_REGM_F_SHIFT; + val |= dpll_params->mf << PLL_REGM_F_SHIFT; omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); val &= ~PLL_SD_MASK; - val |= omap_usb3_dpll_params[clk_index].sd << PLL_SD_SHIFT; + val |= dpll_params->sd << PLL_SD_SHIFT; omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); omap_usb_dpll_relock(phy); @@ -193,8 +183,12 @@ static int omap_usb_dpll_lock(struct omap_usb *phy) static int omap_usb3_init(struct usb_phy *x) { struct omap_usb *phy = phy_to_omapusb(x); + int ret; + + ret = omap_usb_dpll_lock(phy); + if (ret) + return ret; - omap_usb_dpll_lock(phy); omap_control_usb3_phy_power(phy->control_dev, 1); return 0; diff --git a/drivers/usb/phy/phy-rcar-usb.c b/drivers/usb/phy/phy-rcar-usb.c index a35681b0c501..33265a5b2cdf 100644 --- a/drivers/usb/phy/phy-rcar-usb.c +++ b/drivers/usb/phy/phy-rcar-usb.c @@ -1,8 +1,9 @@ /* * Renesas R-Car USB phy driver * - * Copyright (C) 2012 Renesas Solutions Corp. + * Copyright (C) 2012-2013 Renesas Solutions Corp. * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * Copyright (C) 2013 Cogent Embedded, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -15,17 +16,41 @@ #include <linux/platform_device.h> #include <linux/spinlock.h> #include <linux/module.h> - -/* USBH common register */ -#define USBPCTRL0 0x0800 -#define USBPCTRL1 0x0804 -#define USBST 0x0808 -#define USBEH0 0x080C -#define USBOH0 0x081C -#define USBCTL0 0x0858 -#define EIIBC1 0x0094 -#define EIIBC2 0x009C - +#include <linux/platform_data/usb-rcar-phy.h> + +/* REGS block */ +#define USBPCTRL0 0x00 +#define USBPCTRL1 0x04 +#define USBST 0x08 +#define USBEH0 0x0C +#define USBOH0 0x1C +#define USBCTL0 0x58 + +/* High-speed signal quality characteristic control registers (R8A7778 only) */ +#define HSQCTL1 0x24 +#define HSQCTL2 0x28 + +/* USBPCTRL0 */ +#define OVC2 (1 << 10) /* (R8A7779 only) */ + /* Switches the OVC input pin for port 2: */ + /* 1: USB_OVC2, 0: OVC2 */ +#define OVC1_VBUS1 (1 << 9) /* Switches the OVC input pin for port 1: */ + /* 1: USB_OVC1, 0: OVC1/VBUS1 */ + /* Function mode: set to 0 */ +#define OVC0 (1 << 8) /* Switches the OVC input pin for port 0: */ + /* 1: USB_OVC0 pin, 0: OVC0 */ +#define OVC2_ACT (1 << 6) /* (R8A7779 only) */ + /* Host mode: OVC2 polarity: */ + /* 1: active-high, 0: active-low */ +#define PENC (1 << 4) /* Function mode: output level of PENC1 pin: */ + /* 1: high, 0: low */ +#define OVC0_ACT (1 << 3) /* Host mode: OVC0 polarity: */ + /* 1: active-high, 0: active-low */ +#define OVC1_ACT (1 << 1) /* Host mode: OVC1 polarity: */ + /* 1: active-high, 0: active-low */ + /* Function mode: be sure to set to 1 */ +#define PORT1 (1 << 0) /* Selects port 1 mode: */ + /* 1: function, 0: host */ /* USBPCTRL1 */ #define PHY_RST (1 << 2) #define PLL_ENB (1 << 1) @@ -58,8 +83,10 @@ static int rcar_usb_phy_init(struct usb_phy *phy) { struct rcar_usb_phy_priv *priv = usb_phy_to_priv(phy); struct device *dev = phy->dev; + struct rcar_phy_platform_data *pdata = dev_get_platdata(dev); void __iomem *reg0 = priv->reg0; void __iomem *reg1 = priv->reg1; + static const u8 ovcn_act[] = { OVC0_ACT, OVC1_ACT, OVC2_ACT }; int i; u32 val; unsigned long flags; @@ -77,7 +104,16 @@ static int rcar_usb_phy_init(struct usb_phy *phy) /* (2) start USB-PHY internal PLL */ iowrite32(PHY_ENB | PLL_ENB, (reg0 + USBPCTRL1)); - /* (3) USB module status check */ + /* (3) set USB-PHY in accord with the conditions of usage */ + if (reg1) { + u32 hsqctl1 = pdata->ferrite_bead ? 0x41 : 0; + u32 hsqctl2 = pdata->ferrite_bead ? 0x0d : 7; + + iowrite32(hsqctl1, reg1 + HSQCTL1); + iowrite32(hsqctl2, reg1 + HSQCTL2); + } + + /* (4) USB module status check */ for (i = 0; i < 1024; i++) { udelay(10); val = ioread32(reg0 + USBST); @@ -90,24 +126,24 @@ static int rcar_usb_phy_init(struct usb_phy *phy) goto phy_init_end; } - /* (4) USB-PHY reset clear */ + /* (5) USB-PHY reset clear */ iowrite32(PHY_ENB | PLL_ENB | PHY_RST, (reg0 + USBPCTRL1)); - /* set platform specific port settings */ - iowrite32(0x00000000, (reg0 + USBPCTRL0)); - - /* - * EHCI IP internal buffer setting - * EHCI IP internal buffer enable - * - * These are recommended value of a datasheet - * see [USB :: EHCI internal buffer setting] - */ - iowrite32(0x00ff0040, (reg0 + EIIBC1)); - iowrite32(0x00ff0040, (reg1 + EIIBC1)); - - iowrite32(0x00000001, (reg0 + EIIBC2)); - iowrite32(0x00000001, (reg1 + EIIBC2)); + /* Board specific port settings */ + val = 0; + if (pdata->port1_func) + val |= PORT1; + if (pdata->penc1) + val |= PENC; + for (i = 0; i < 3; i++) { + /* OVCn bits follow each other in the right order */ + if (pdata->ovc_pin[i].select_3_3v) + val |= OVC0 << i; + /* OVCn_ACT bits are spaced by irregular intervals */ + if (pdata->ovc_pin[i].active_high) + val |= ovcn_act[i]; + } + iowrite32(val, (reg0 + USBPCTRL0)); /* * Bus alignment settings @@ -134,10 +170,8 @@ static void rcar_usb_phy_shutdown(struct usb_phy *phy) spin_lock_irqsave(&priv->lock, flags); - if (priv->counter-- == 1) { /* last user */ - iowrite32(0x00000000, (reg0 + USBPCTRL0)); + if (priv->counter-- == 1) /* last user */ iowrite32(0x00000000, (reg0 + USBPCTRL1)); - } spin_unlock_irqrestore(&priv->lock, flags); } @@ -147,27 +181,24 @@ static int rcar_usb_phy_probe(struct platform_device *pdev) struct rcar_usb_phy_priv *priv; struct resource *res0, *res1; struct device *dev = &pdev->dev; - void __iomem *reg0, *reg1; + void __iomem *reg0, *reg1 = NULL; int ret; - res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); - res1 = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!res0 || !res1) { - dev_err(dev, "Not enough platform resources\n"); + if (!dev_get_platdata(&pdev->dev)) { + dev_err(dev, "No platform data\n"); return -EINVAL; } - /* - * CAUTION - * - * Because this phy address is also mapped under OHCI/EHCI address area, - * this driver can't use devm_request_and_ioremap(dev, res) here - */ - reg0 = devm_ioremap_nocache(dev, res0->start, resource_size(res0)); - reg1 = devm_ioremap_nocache(dev, res1->start, resource_size(res1)); - if (!reg0 || !reg1) { - dev_err(dev, "ioremap error\n"); - return -ENOMEM; + res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); + reg0 = devm_ioremap_resource(dev, res0); + if (IS_ERR(reg0)) + return PTR_ERR(reg0); + + res1 = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (res1) { + reg1 = devm_ioremap_resource(dev, res1); + if (IS_ERR(reg1)) + return PTR_ERR(reg1); } priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); diff --git a/drivers/usb/phy/phy-samsung-usb.c b/drivers/usb/phy/phy-samsung-usb.c index 7b118ee5f5e4..ac025ca08425 100644 --- a/drivers/usb/phy/phy-samsung-usb.c +++ b/drivers/usb/phy/phy-samsung-usb.c @@ -73,7 +73,7 @@ EXPORT_SYMBOL_GPL(samsung_usbphy_parse_dt); * Here 'on = true' would mean USB PHY block is isolated, hence * de-activated and vice-versa. */ -void samsung_usbphy_set_isolation(struct samsung_usbphy *sphy, bool on) +void samsung_usbphy_set_isolation_4210(struct samsung_usbphy *sphy, bool on) { void __iomem *reg = NULL; u32 reg_val; @@ -84,32 +84,12 @@ void samsung_usbphy_set_isolation(struct samsung_usbphy *sphy, bool on) return; } - switch (sphy->drv_data->cpu_type) { - case TYPE_S3C64XX: - /* - * Do nothing: We will add here once S3C64xx goes for DT support - */ - break; - case TYPE_EXYNOS4210: - /* - * Fall through since exynos4210 and exynos5250 have similar - * register architecture: two separate registers for host and - * device phy control with enable bit at position 0. - */ - case TYPE_EXYNOS5250: - if (sphy->phy_type == USB_PHY_TYPE_DEVICE) { - reg = sphy->pmuregs + - sphy->drv_data->devphy_reg_offset; - en_mask = sphy->drv_data->devphy_en_mask; - } else if (sphy->phy_type == USB_PHY_TYPE_HOST) { - reg = sphy->pmuregs + - sphy->drv_data->hostphy_reg_offset; - en_mask = sphy->drv_data->hostphy_en_mask; - } - break; - default: - dev_err(sphy->dev, "Invalid SoC type\n"); - return; + if (sphy->phy_type == USB_PHY_TYPE_DEVICE) { + reg = sphy->pmuregs + sphy->drv_data->devphy_reg_offset; + en_mask = sphy->drv_data->devphy_en_mask; + } else if (sphy->phy_type == USB_PHY_TYPE_HOST) { + reg = sphy->pmuregs + sphy->drv_data->hostphy_reg_offset; + en_mask = sphy->drv_data->hostphy_en_mask; } reg_val = readl(reg); @@ -120,8 +100,13 @@ void samsung_usbphy_set_isolation(struct samsung_usbphy *sphy, bool on) reg_val |= en_mask; writel(reg_val, reg); + + if (sphy->drv_data->cpu_type == TYPE_EXYNOS4X12) { + writel(reg_val, sphy->pmuregs + EXYNOS4X12_PHY_HSIC_CTRL0); + writel(reg_val, sphy->pmuregs + EXYNOS4X12_PHY_HSIC_CTRL1); + } } -EXPORT_SYMBOL_GPL(samsung_usbphy_set_isolation); +EXPORT_SYMBOL_GPL(samsung_usbphy_set_isolation_4210); /* * Configure the mode of working of usb-phy here: HOST/DEVICE. @@ -162,73 +147,93 @@ int samsung_usbphy_set_type(struct usb_phy *phy, } EXPORT_SYMBOL_GPL(samsung_usbphy_set_type); +int samsung_usbphy_rate_to_clksel_64xx(struct samsung_usbphy *sphy, + unsigned long rate) +{ + unsigned int clksel; + + switch (rate) { + case 12 * MHZ: + clksel = PHYCLK_CLKSEL_12M; + break; + case 24 * MHZ: + clksel = PHYCLK_CLKSEL_24M; + break; + case 48 * MHZ: + clksel = PHYCLK_CLKSEL_48M; + break; + default: + dev_err(sphy->dev, + "Invalid reference clock frequency: %lu\n", rate); + return -EINVAL; + } + + return clksel; +} +EXPORT_SYMBOL_GPL(samsung_usbphy_rate_to_clksel_64xx); + +int samsung_usbphy_rate_to_clksel_4x12(struct samsung_usbphy *sphy, + unsigned long rate) +{ + unsigned int clksel; + + switch (rate) { + case 9600 * KHZ: + clksel = FSEL_CLKSEL_9600K; + break; + case 10 * MHZ: + clksel = FSEL_CLKSEL_10M; + break; + case 12 * MHZ: + clksel = FSEL_CLKSEL_12M; + break; + case 19200 * KHZ: + clksel = FSEL_CLKSEL_19200K; + break; + case 20 * MHZ: + clksel = FSEL_CLKSEL_20M; + break; + case 24 * MHZ: + clksel = FSEL_CLKSEL_24M; + break; + case 50 * MHZ: + clksel = FSEL_CLKSEL_50M; + break; + default: + dev_err(sphy->dev, + "Invalid reference clock frequency: %lu\n", rate); + return -EINVAL; + } + + return clksel; +} +EXPORT_SYMBOL_GPL(samsung_usbphy_rate_to_clksel_4x12); + /* * Returns reference clock frequency selection value */ int samsung_usbphy_get_refclk_freq(struct samsung_usbphy *sphy) { struct clk *ref_clk; - int refclk_freq = 0; + unsigned long rate; + int refclk_freq; /* * In exynos5250 USB host and device PHY use * external crystal clock XXTI */ if (sphy->drv_data->cpu_type == TYPE_EXYNOS5250) - ref_clk = devm_clk_get(sphy->dev, "ext_xtal"); + ref_clk = clk_get(sphy->dev, "ext_xtal"); else - ref_clk = devm_clk_get(sphy->dev, "xusbxti"); + ref_clk = clk_get(sphy->dev, "xusbxti"); if (IS_ERR(ref_clk)) { dev_err(sphy->dev, "Failed to get reference clock\n"); return PTR_ERR(ref_clk); } - if (sphy->drv_data->cpu_type == TYPE_EXYNOS5250) { - /* set clock frequency for PLL */ - switch (clk_get_rate(ref_clk)) { - case 9600 * KHZ: - refclk_freq = FSEL_CLKSEL_9600K; - break; - case 10 * MHZ: - refclk_freq = FSEL_CLKSEL_10M; - break; - case 12 * MHZ: - refclk_freq = FSEL_CLKSEL_12M; - break; - case 19200 * KHZ: - refclk_freq = FSEL_CLKSEL_19200K; - break; - case 20 * MHZ: - refclk_freq = FSEL_CLKSEL_20M; - break; - case 50 * MHZ: - refclk_freq = FSEL_CLKSEL_50M; - break; - case 24 * MHZ: - default: - /* default reference clock */ - refclk_freq = FSEL_CLKSEL_24M; - break; - } - } else { - switch (clk_get_rate(ref_clk)) { - case 12 * MHZ: - refclk_freq = PHYCLK_CLKSEL_12M; - break; - case 24 * MHZ: - refclk_freq = PHYCLK_CLKSEL_24M; - break; - case 48 * MHZ: - refclk_freq = PHYCLK_CLKSEL_48M; - break; - default: - if (sphy->drv_data->cpu_type == TYPE_S3C64XX) - refclk_freq = PHYCLK_CLKSEL_48M; - else - refclk_freq = PHYCLK_CLKSEL_24M; - break; - } - } + rate = clk_get_rate(ref_clk); + refclk_freq = sphy->drv_data->rate_to_clksel(sphy, rate); + clk_put(ref_clk); return refclk_freq; diff --git a/drivers/usb/phy/phy-samsung-usb.h b/drivers/usb/phy/phy-samsung-usb.h index 70a9cae5e37f..68771bfd1825 100644 --- a/drivers/usb/phy/phy-samsung-usb.h +++ b/drivers/usb/phy/phy-samsung-usb.h @@ -47,6 +47,16 @@ #define RSTCON_HLINK_SWRST (0x1 << 1) #define RSTCON_SWRST (0x1 << 0) +/* EXYNOS4X12 */ +#define EXYNOS4X12_PHY_HSIC_CTRL0 (0x04) +#define EXYNOS4X12_PHY_HSIC_CTRL1 (0x08) + +#define PHYPWR_NORMAL_MASK_HSIC1 (0x7 << 12) +#define PHYPWR_NORMAL_MASK_HSIC0 (0x7 << 9) +#define PHYPWR_NORMAL_MASK_PHY1 (0x7 << 6) + +#define RSTCON_HOSTPHY_SWRST (0xf << 3) + /* EXYNOS5 */ #define EXYNOS5_PHY_HOST_CTRL0 (0x00) @@ -241,9 +251,12 @@ enum samsung_cpu_type { TYPE_S3C64XX, TYPE_EXYNOS4210, + TYPE_EXYNOS4X12, TYPE_EXYNOS5250, }; +struct samsung_usbphy; + /* * struct samsung_usbphy_drvdata - driver data for various SoC variants * @cpu_type: machine identifier @@ -268,6 +281,10 @@ struct samsung_usbphy_drvdata { int hostphy_en_mask; u32 devphy_reg_offset; u32 hostphy_reg_offset; + int (*rate_to_clksel)(struct samsung_usbphy *, unsigned long); + void (*set_isolation)(struct samsung_usbphy *, bool); + void (*phy_enable)(struct samsung_usbphy *); + void (*phy_disable)(struct samsung_usbphy *); }; /* @@ -320,8 +337,13 @@ static inline const struct samsung_usbphy_drvdata } extern int samsung_usbphy_parse_dt(struct samsung_usbphy *sphy); -extern void samsung_usbphy_set_isolation(struct samsung_usbphy *sphy, bool on); +extern void samsung_usbphy_set_isolation_4210(struct samsung_usbphy *sphy, + bool on); extern void samsung_usbphy_cfg_sel(struct samsung_usbphy *sphy); extern int samsung_usbphy_set_type(struct usb_phy *phy, enum samsung_usb_phy_type phy_type); extern int samsung_usbphy_get_refclk_freq(struct samsung_usbphy *sphy); +extern int samsung_usbphy_rate_to_clksel_64xx(struct samsung_usbphy *sphy, + unsigned long rate); +extern int samsung_usbphy_rate_to_clksel_4x12(struct samsung_usbphy *sphy, + unsigned long rate); diff --git a/drivers/usb/phy/phy-samsung-usb2.c b/drivers/usb/phy/phy-samsung-usb2.c index 9d5e273abcc7..ff70e4b19b97 100644 --- a/drivers/usb/phy/phy-samsung-usb2.c +++ b/drivers/usb/phy/phy-samsung-usb2.c @@ -176,6 +176,11 @@ static void samsung_usb2phy_enable(struct samsung_usbphy *sphy) phypwr &= ~PHYPWR_NORMAL_MASK; rstcon |= RSTCON_SWRST; break; + case TYPE_EXYNOS4X12: + phypwr &= ~(PHYPWR_NORMAL_MASK_HSIC0 | + PHYPWR_NORMAL_MASK_HSIC1 | + PHYPWR_NORMAL_MASK_PHY1); + rstcon |= RSTCON_HOSTPHY_SWRST; case TYPE_EXYNOS4210: phypwr &= ~PHYPWR_NORMAL_MASK_PHY0; rstcon |= RSTCON_SWRST; @@ -189,6 +194,8 @@ static void samsung_usb2phy_enable(struct samsung_usbphy *sphy) /* reset all ports of PHY and Link */ writel(rstcon, regs + SAMSUNG_RSTCON); udelay(10); + if (sphy->drv_data->cpu_type == TYPE_EXYNOS4X12) + rstcon &= ~RSTCON_HOSTPHY_SWRST; rstcon &= ~RSTCON_SWRST; writel(rstcon, regs + SAMSUNG_RSTCON); } @@ -239,6 +246,10 @@ static void samsung_usb2phy_disable(struct samsung_usbphy *sphy) case TYPE_S3C64XX: phypwr |= PHYPWR_NORMAL_MASK; break; + case TYPE_EXYNOS4X12: + phypwr |= (PHYPWR_NORMAL_MASK_HSIC0 | + PHYPWR_NORMAL_MASK_HSIC1 | + PHYPWR_NORMAL_MASK_PHY1); case TYPE_EXYNOS4210: phypwr |= PHYPWR_NORMAL_MASK_PHY0; default: @@ -284,17 +295,14 @@ static int samsung_usb2phy_init(struct usb_phy *phy) /* Disable phy isolation */ if (sphy->plat && sphy->plat->pmu_isolation) sphy->plat->pmu_isolation(false); - else - samsung_usbphy_set_isolation(sphy, false); + else if (sphy->drv_data->set_isolation) + sphy->drv_data->set_isolation(sphy, false); /* Selecting Host/OTG mode; After reset USB2.0PHY_CFG: HOST */ samsung_usbphy_cfg_sel(sphy); /* Initialize usb phy registers */ - if (sphy->drv_data->cpu_type == TYPE_EXYNOS5250) - samsung_exynos5_usb2phy_enable(sphy); - else - samsung_usb2phy_enable(sphy); + sphy->drv_data->phy_enable(sphy); spin_unlock_irqrestore(&sphy->lock, flags); @@ -334,16 +342,13 @@ static void samsung_usb2phy_shutdown(struct usb_phy *phy) } /* De-initialize usb phy registers */ - if (sphy->drv_data->cpu_type == TYPE_EXYNOS5250) - samsung_exynos5_usb2phy_disable(sphy); - else - samsung_usb2phy_disable(sphy); + sphy->drv_data->phy_disable(sphy); /* Enable phy isolation */ if (sphy->plat && sphy->plat->pmu_isolation) sphy->plat->pmu_isolation(true); - else - samsung_usbphy_set_isolation(sphy, true); + else if (sphy->drv_data->set_isolation) + sphy->drv_data->set_isolation(sphy, true); spin_unlock_irqrestore(&sphy->lock, flags); @@ -354,7 +359,7 @@ static int samsung_usb2phy_probe(struct platform_device *pdev) { struct samsung_usbphy *sphy; struct usb_otg *otg; - struct samsung_usbphy_data *pdata = pdev->dev.platform_data; + struct samsung_usbphy_data *pdata = dev_get_platdata(&pdev->dev); const struct samsung_usbphy_drvdata *drv_data; struct device *dev = &pdev->dev; struct resource *phy_mem; @@ -383,7 +388,7 @@ static int samsung_usb2phy_probe(struct platform_device *pdev) clk = devm_clk_get(dev, "otg"); if (IS_ERR(clk)) { - dev_err(dev, "Failed to get otg clock\n"); + dev_err(dev, "Failed to get usbhost/otg clock\n"); return PTR_ERR(clk); } @@ -408,7 +413,10 @@ static int samsung_usb2phy_probe(struct platform_device *pdev) sphy->phy.label = "samsung-usb2phy"; sphy->phy.init = samsung_usb2phy_init; sphy->phy.shutdown = samsung_usb2phy_shutdown; - sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy); + + sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy); + if (sphy->ref_clk_freq < 0) + return -EINVAL; sphy->phy.otg = otg; sphy->phy.otg->phy = &sphy->phy; @@ -438,18 +446,40 @@ static int samsung_usb2phy_remove(struct platform_device *pdev) static const struct samsung_usbphy_drvdata usb2phy_s3c64xx = { .cpu_type = TYPE_S3C64XX, .devphy_en_mask = S3C64XX_USBPHY_ENABLE, + .rate_to_clksel = samsung_usbphy_rate_to_clksel_64xx, + .set_isolation = NULL, /* TODO */ + .phy_enable = samsung_usb2phy_enable, + .phy_disable = samsung_usb2phy_disable, }; static const struct samsung_usbphy_drvdata usb2phy_exynos4 = { .cpu_type = TYPE_EXYNOS4210, .devphy_en_mask = EXYNOS_USBPHY_ENABLE, .hostphy_en_mask = EXYNOS_USBPHY_ENABLE, + .rate_to_clksel = samsung_usbphy_rate_to_clksel_64xx, + .set_isolation = samsung_usbphy_set_isolation_4210, + .phy_enable = samsung_usb2phy_enable, + .phy_disable = samsung_usb2phy_disable, +}; + +static const struct samsung_usbphy_drvdata usb2phy_exynos4x12 = { + .cpu_type = TYPE_EXYNOS4X12, + .devphy_en_mask = EXYNOS_USBPHY_ENABLE, + .hostphy_en_mask = EXYNOS_USBPHY_ENABLE, + .rate_to_clksel = samsung_usbphy_rate_to_clksel_4x12, + .set_isolation = samsung_usbphy_set_isolation_4210, + .phy_enable = samsung_usb2phy_enable, + .phy_disable = samsung_usb2phy_disable, }; static struct samsung_usbphy_drvdata usb2phy_exynos5 = { .cpu_type = TYPE_EXYNOS5250, .hostphy_en_mask = EXYNOS_USBPHY_ENABLE, .hostphy_reg_offset = EXYNOS_USBHOST_PHY_CTRL_OFFSET, + .rate_to_clksel = samsung_usbphy_rate_to_clksel_4x12, + .set_isolation = samsung_usbphy_set_isolation_4210, + .phy_enable = samsung_exynos5_usb2phy_enable, + .phy_disable = samsung_exynos5_usb2phy_disable, }; #ifdef CONFIG_OF @@ -461,6 +491,9 @@ static const struct of_device_id samsung_usbphy_dt_match[] = { .compatible = "samsung,exynos4210-usb2phy", .data = &usb2phy_exynos4, }, { + .compatible = "samsung,exynos4x12-usb2phy", + .data = &usb2phy_exynos4x12, + }, { .compatible = "samsung,exynos5250-usb2phy", .data = &usb2phy_exynos5 }, @@ -477,6 +510,9 @@ static struct platform_device_id samsung_usbphy_driver_ids[] = { .name = "exynos4210-usb2phy", .driver_data = (unsigned long)&usb2phy_exynos4, }, { + .name = "exynos4x12-usb2phy", + .driver_data = (unsigned long)&usb2phy_exynos4x12, + }, { .name = "exynos5250-usb2phy", .driver_data = (unsigned long)&usb2phy_exynos5, }, diff --git a/drivers/usb/phy/phy-samsung-usb3.c b/drivers/usb/phy/phy-samsung-usb3.c index 5a9efcbcb532..c6eb22213de6 100644 --- a/drivers/usb/phy/phy-samsung-usb3.c +++ b/drivers/usb/phy/phy-samsung-usb3.c @@ -65,7 +65,7 @@ static u32 samsung_usb3phy_set_refclk(struct samsung_usbphy *sphy) return reg; } -static int samsung_exynos5_usb3phy_enable(struct samsung_usbphy *sphy) +static void samsung_exynos5_usb3phy_enable(struct samsung_usbphy *sphy) { void __iomem *regs = sphy->regs; u32 phyparam0; @@ -133,8 +133,6 @@ static int samsung_exynos5_usb3phy_enable(struct samsung_usbphy *sphy) phyclkrst &= ~(PHYCLKRST_PORTRESET); writel(phyclkrst, regs + EXYNOS5_DRD_PHYCLKRST); - - return 0; } static void samsung_exynos5_usb3phy_disable(struct samsung_usbphy *sphy) @@ -184,10 +182,11 @@ static int samsung_usb3phy_init(struct usb_phy *phy) samsung_usbphy_set_type(&sphy->phy, USB_PHY_TYPE_DEVICE); /* Disable phy isolation */ - samsung_usbphy_set_isolation(sphy, false); + if (sphy->drv_data->set_isolation) + sphy->drv_data->set_isolation(sphy, false); /* Initialize usb phy registers */ - samsung_exynos5_usb3phy_enable(sphy); + sphy->drv_data->phy_enable(sphy); spin_unlock_irqrestore(&sphy->lock, flags); @@ -218,10 +217,11 @@ static void samsung_usb3phy_shutdown(struct usb_phy *phy) samsung_usbphy_set_type(&sphy->phy, USB_PHY_TYPE_DEVICE); /* De-initialize usb phy registers */ - samsung_exynos5_usb3phy_disable(sphy); + sphy->drv_data->phy_disable(sphy); /* Enable phy isolation */ - samsung_usbphy_set_isolation(sphy, true); + if (sphy->drv_data->set_isolation) + sphy->drv_data->set_isolation(sphy, true); spin_unlock_irqrestore(&sphy->lock, flags); @@ -231,7 +231,7 @@ static void samsung_usb3phy_shutdown(struct usb_phy *phy) static int samsung_usb3phy_probe(struct platform_device *pdev) { struct samsung_usbphy *sphy; - struct samsung_usbphy_data *pdata = pdev->dev.platform_data; + struct samsung_usbphy_data *pdata = dev_get_platdata(&pdev->dev); struct device *dev = &pdev->dev; struct resource *phy_mem; void __iomem *phy_base; @@ -274,7 +274,10 @@ static int samsung_usb3phy_probe(struct platform_device *pdev) sphy->phy.init = samsung_usb3phy_init; sphy->phy.shutdown = samsung_usb3phy_shutdown; sphy->drv_data = samsung_usbphy_get_driver_data(pdev); - sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy); + + sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy); + if (sphy->ref_clk_freq < 0) + return -EINVAL; spin_lock_init(&sphy->lock); @@ -300,6 +303,10 @@ static int samsung_usb3phy_remove(struct platform_device *pdev) static struct samsung_usbphy_drvdata usb3phy_exynos5 = { .cpu_type = TYPE_EXYNOS5250, .devphy_en_mask = EXYNOS_USBPHY_ENABLE, + .rate_to_clksel = samsung_usbphy_rate_to_clksel_4x12, + .set_isolation = samsung_usbphy_set_isolation_4210, + .phy_enable = samsung_exynos5_usb3phy_enable, + .phy_disable = samsung_exynos5_usb3phy_disable, }; #ifdef CONFIG_OF diff --git a/drivers/usb/phy/phy-tegra-usb.c b/drivers/usb/phy/phy-tegra-usb.c index 17d811292f3a..e9cb1cb8abc7 100644 --- a/drivers/usb/phy/phy-tegra-usb.c +++ b/drivers/usb/phy/phy-tegra-usb.c @@ -1,9 +1,11 @@ /* * Copyright (C) 2010 Google, Inc. + * Copyright (C) 2013 NVIDIA Corporation * * Author: * Erik Gilling <konkers@google.com> * Benoit Goby <benoit@android.com> + * Venu Byravarasu <vbyravarasu@nvidia.com> * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and @@ -21,21 +23,36 @@ #include <linux/slab.h> #include <linux/err.h> #include <linux/export.h> +#include <linux/module.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/gpio.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/of_gpio.h> #include <linux/usb/otg.h> #include <linux/usb/ulpi.h> +#include <linux/usb/of.h> #include <asm/mach-types.h> +#include <linux/usb/ehci_def.h> #include <linux/usb/tegra_usb_phy.h> - -#define TEGRA_USB_BASE 0xC5000000 -#define TEGRA_USB_SIZE SZ_16K +#include <linux/regulator/consumer.h> #define ULPI_VIEWPORT 0x170 +/* PORTSC PTS/PHCD bits, Tegra20 only */ +#define TEGRA_USB_PORTSC1 0x184 +#define TEGRA_USB_PORTSC1_PTS(x) (((x) & 0x3) << 30) +#define TEGRA_USB_PORTSC1_PHCD (1 << 23) + +/* HOSTPC1 PTS/PHCD bits, Tegra30 and above */ +#define TEGRA_USB_HOSTPC1_DEVLC 0x1b4 +#define TEGRA_USB_HOSTPC1_DEVLC_PTS(x) (((x) & 0x7) << 29) +#define TEGRA_USB_HOSTPC1_DEVLC_PHCD (1 << 22) + +/* Bits of PORTSC1, which will get cleared by writing 1 into them */ +#define TEGRA_PORTSC1_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC) + #define USB_SUSP_CTRL 0x400 #define USB_WAKE_ON_CNNT_EN_DEV (1 << 3) #define USB_WAKE_ON_DISCON_EN_DEV (1 << 4) @@ -75,16 +92,22 @@ #define UTMIP_XCVR_CFG0 0x808 #define UTMIP_XCVR_SETUP(x) (((x) & 0xf) << 0) +#define UTMIP_XCVR_SETUP_MSB(x) ((((x) & 0x70) >> 4) << 22) #define UTMIP_XCVR_LSRSLEW(x) (((x) & 0x3) << 8) #define UTMIP_XCVR_LSFSLEW(x) (((x) & 0x3) << 10) #define UTMIP_FORCE_PD_POWERDOWN (1 << 14) #define UTMIP_FORCE_PD2_POWERDOWN (1 << 16) #define UTMIP_FORCE_PDZI_POWERDOWN (1 << 18) -#define UTMIP_XCVR_HSSLEW_MSB(x) (((x) & 0x7f) << 25) +#define UTMIP_XCVR_LSBIAS_SEL (1 << 21) +#define UTMIP_XCVR_HSSLEW(x) (((x) & 0x3) << 4) +#define UTMIP_XCVR_HSSLEW_MSB(x) ((((x) & 0x1fc) >> 2) << 25) #define UTMIP_BIAS_CFG0 0x80c #define UTMIP_OTGPD (1 << 11) #define UTMIP_BIASPD (1 << 10) +#define UTMIP_HSSQUELCH_LEVEL(x) (((x) & 0x3) << 0) +#define UTMIP_HSDISCON_LEVEL(x) (((x) & 0x3) << 2) +#define UTMIP_HSDISCON_LEVEL_MSB(x) ((((x) & 0x4) >> 2) << 24) #define UTMIP_HSRX_CFG0 0x810 #define UTMIP_ELASTIC_LIMIT(x) (((x) & 0x1f) << 10) @@ -128,6 +151,12 @@ #define UTMIP_BIAS_CFG1 0x83c #define UTMIP_BIAS_PDTRK_COUNT(x) (((x) & 0x1f) << 3) +/* For Tegra30 and above only, the address is different in Tegra20 */ +#define USB_USBMODE 0x1f8 +#define USB_USBMODE_MASK (3 << 0) +#define USB_USBMODE_HOST (3 << 0) +#define USB_USBMODE_DEVICE (2 << 0) + static DEFINE_SPINLOCK(utmip_pad_lock); static int utmip_pad_count; @@ -175,59 +204,62 @@ static const struct tegra_xtal_freq tegra_freq_table[] = { }, }; -static struct tegra_utmip_config utmip_default[] = { - [0] = { - .hssync_start_delay = 9, - .idle_wait_delay = 17, - .elastic_limit = 16, - .term_range_adj = 6, - .xcvr_setup = 9, - .xcvr_lsfslew = 1, - .xcvr_lsrslew = 1, - }, - [2] = { - .hssync_start_delay = 9, - .idle_wait_delay = 17, - .elastic_limit = 16, - .term_range_adj = 6, - .xcvr_setup = 9, - .xcvr_lsfslew = 2, - .xcvr_lsrslew = 2, - }, -}; +static void set_pts(struct tegra_usb_phy *phy, u8 pts_val) +{ + void __iomem *base = phy->regs; + unsigned long val; + + if (phy->soc_config->has_hostpc) { + val = readl(base + TEGRA_USB_HOSTPC1_DEVLC); + val &= ~TEGRA_USB_HOSTPC1_DEVLC_PTS(~0); + val |= TEGRA_USB_HOSTPC1_DEVLC_PTS(pts_val); + writel(val, base + TEGRA_USB_HOSTPC1_DEVLC); + } else { + val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS; + val &= ~TEGRA_USB_PORTSC1_PTS(~0); + val |= TEGRA_USB_PORTSC1_PTS(pts_val); + writel(val, base + TEGRA_USB_PORTSC1); + } +} + +static void set_phcd(struct tegra_usb_phy *phy, bool enable) +{ + void __iomem *base = phy->regs; + unsigned long val; + + if (phy->soc_config->has_hostpc) { + val = readl(base + TEGRA_USB_HOSTPC1_DEVLC); + if (enable) + val |= TEGRA_USB_HOSTPC1_DEVLC_PHCD; + else + val &= ~TEGRA_USB_HOSTPC1_DEVLC_PHCD; + writel(val, base + TEGRA_USB_HOSTPC1_DEVLC); + } else { + val = readl(base + TEGRA_USB_PORTSC1) & ~PORT_RWC_BITS; + if (enable) + val |= TEGRA_USB_PORTSC1_PHCD; + else + val &= ~TEGRA_USB_PORTSC1_PHCD; + writel(val, base + TEGRA_USB_PORTSC1); + } +} static int utmip_pad_open(struct tegra_usb_phy *phy) { - phy->pad_clk = clk_get_sys("utmip-pad", NULL); + phy->pad_clk = devm_clk_get(phy->u_phy.dev, "utmi-pads"); if (IS_ERR(phy->pad_clk)) { pr_err("%s: can't get utmip pad clock\n", __func__); return PTR_ERR(phy->pad_clk); } - if (phy->is_legacy_phy) { - phy->pad_regs = phy->regs; - } else { - phy->pad_regs = ioremap(TEGRA_USB_BASE, TEGRA_USB_SIZE); - if (!phy->pad_regs) { - pr_err("%s: can't remap usb registers\n", __func__); - clk_put(phy->pad_clk); - return -ENOMEM; - } - } return 0; } -static void utmip_pad_close(struct tegra_usb_phy *phy) -{ - if (!phy->is_legacy_phy) - iounmap(phy->pad_regs); - clk_put(phy->pad_clk); -} - static void utmip_pad_power_on(struct tegra_usb_phy *phy) { unsigned long val, flags; void __iomem *base = phy->pad_regs; + struct tegra_utmip_config *config = phy->config; clk_prepare_enable(phy->pad_clk); @@ -236,6 +268,16 @@ static void utmip_pad_power_on(struct tegra_usb_phy *phy) if (utmip_pad_count++ == 0) { val = readl(base + UTMIP_BIAS_CFG0); val &= ~(UTMIP_OTGPD | UTMIP_BIASPD); + + if (phy->soc_config->requires_extra_tuning_parameters) { + val &= ~(UTMIP_HSSQUELCH_LEVEL(~0) | + UTMIP_HSDISCON_LEVEL(~0) | + UTMIP_HSDISCON_LEVEL_MSB(~0)); + + val |= UTMIP_HSSQUELCH_LEVEL(config->hssquelch_level); + val |= UTMIP_HSDISCON_LEVEL(config->hsdiscon_level); + val |= UTMIP_HSDISCON_LEVEL_MSB(config->hsdiscon_level); + } writel(val, base + UTMIP_BIAS_CFG0); } @@ -299,7 +341,7 @@ static void utmi_phy_clk_disable(struct tegra_usb_phy *phy) val &= ~USB_SUSP_SET; writel(val, base + USB_SUSP_CTRL); } else - phy->set_phcd(&phy->u_phy, true); + set_phcd(phy, true); if (utmi_wait_register(base + USB_SUSP_CTRL, USB_PHY_CLK_VALID, 0) < 0) pr_err("%s: timeout waiting for phy to stabilize\n", __func__); @@ -321,7 +363,7 @@ static void utmi_phy_clk_enable(struct tegra_usb_phy *phy) val &= ~USB_SUSP_CLR; writel(val, base + USB_SUSP_CTRL); } else - phy->set_phcd(&phy->u_phy, false); + set_phcd(phy, false); if (utmi_wait_register(base + USB_SUSP_CTRL, USB_PHY_CLK_VALID, USB_PHY_CLK_VALID)) @@ -345,7 +387,7 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy) } val = readl(base + UTMIP_TX_CFG0); - val &= ~UTMIP_FS_PREABMLE_J; + val |= UTMIP_FS_PREABMLE_J; writel(val, base + UTMIP_TX_CFG0); val = readl(base + UTMIP_HSRX_CFG0); @@ -368,34 +410,56 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy) val &= ~UTMIP_SUSPEND_EXIT_ON_EDGE; writel(val, base + UTMIP_MISC_CFG0); - val = readl(base + UTMIP_MISC_CFG1); - val &= ~(UTMIP_PLL_ACTIVE_DLY_COUNT(~0) | UTMIP_PLLU_STABLE_COUNT(~0)); - val |= UTMIP_PLL_ACTIVE_DLY_COUNT(phy->freq->active_delay) | - UTMIP_PLLU_STABLE_COUNT(phy->freq->stable_count); - writel(val, base + UTMIP_MISC_CFG1); - - val = readl(base + UTMIP_PLL_CFG1); - val &= ~(UTMIP_XTAL_FREQ_COUNT(~0) | UTMIP_PLLU_ENABLE_DLY_COUNT(~0)); - val |= UTMIP_XTAL_FREQ_COUNT(phy->freq->xtal_freq_count) | - UTMIP_PLLU_ENABLE_DLY_COUNT(phy->freq->enable_delay); - writel(val, base + UTMIP_PLL_CFG1); + if (!phy->soc_config->utmi_pll_config_in_car_module) { + val = readl(base + UTMIP_MISC_CFG1); + val &= ~(UTMIP_PLL_ACTIVE_DLY_COUNT(~0) | + UTMIP_PLLU_STABLE_COUNT(~0)); + val |= UTMIP_PLL_ACTIVE_DLY_COUNT(phy->freq->active_delay) | + UTMIP_PLLU_STABLE_COUNT(phy->freq->stable_count); + writel(val, base + UTMIP_MISC_CFG1); + + val = readl(base + UTMIP_PLL_CFG1); + val &= ~(UTMIP_XTAL_FREQ_COUNT(~0) | + UTMIP_PLLU_ENABLE_DLY_COUNT(~0)); + val |= UTMIP_XTAL_FREQ_COUNT(phy->freq->xtal_freq_count) | + UTMIP_PLLU_ENABLE_DLY_COUNT(phy->freq->enable_delay); + writel(val, base + UTMIP_PLL_CFG1); + } - if (phy->mode == TEGRA_USB_PHY_MODE_DEVICE) { + if (phy->mode == USB_DR_MODE_PERIPHERAL) { val = readl(base + USB_SUSP_CTRL); val &= ~(USB_WAKE_ON_CNNT_EN_DEV | USB_WAKE_ON_DISCON_EN_DEV); writel(val, base + USB_SUSP_CTRL); + + val = readl(base + UTMIP_BAT_CHRG_CFG0); + val &= ~UTMIP_PD_CHRG; + writel(val, base + UTMIP_BAT_CHRG_CFG0); + } else { + val = readl(base + UTMIP_BAT_CHRG_CFG0); + val |= UTMIP_PD_CHRG; + writel(val, base + UTMIP_BAT_CHRG_CFG0); } utmip_pad_power_on(phy); val = readl(base + UTMIP_XCVR_CFG0); val &= ~(UTMIP_FORCE_PD_POWERDOWN | UTMIP_FORCE_PD2_POWERDOWN | - UTMIP_FORCE_PDZI_POWERDOWN | UTMIP_XCVR_SETUP(~0) | - UTMIP_XCVR_LSFSLEW(~0) | UTMIP_XCVR_LSRSLEW(~0) | - UTMIP_XCVR_HSSLEW_MSB(~0)); - val |= UTMIP_XCVR_SETUP(config->xcvr_setup); + UTMIP_FORCE_PDZI_POWERDOWN | UTMIP_XCVR_LSBIAS_SEL | + UTMIP_XCVR_SETUP(~0) | UTMIP_XCVR_SETUP_MSB(~0) | + UTMIP_XCVR_LSFSLEW(~0) | UTMIP_XCVR_LSRSLEW(~0)); + + if (!config->xcvr_setup_use_fuses) { + val |= UTMIP_XCVR_SETUP(config->xcvr_setup); + val |= UTMIP_XCVR_SETUP_MSB(config->xcvr_setup); + } val |= UTMIP_XCVR_LSFSLEW(config->xcvr_lsfslew); val |= UTMIP_XCVR_LSRSLEW(config->xcvr_lsrslew); + + if (phy->soc_config->requires_extra_tuning_parameters) { + val &= ~(UTMIP_XCVR_HSSLEW(~0) | UTMIP_XCVR_HSSLEW_MSB(~0)); + val |= UTMIP_XCVR_HSSLEW(config->xcvr_hsslew); + val |= UTMIP_XCVR_HSSLEW_MSB(config->xcvr_hsslew); + } writel(val, base + UTMIP_XCVR_CFG0); val = readl(base + UTMIP_XCVR_CFG1); @@ -404,23 +468,19 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy) val |= UTMIP_XCVR_TERM_RANGE_ADJ(config->term_range_adj); writel(val, base + UTMIP_XCVR_CFG1); - val = readl(base + UTMIP_BAT_CHRG_CFG0); - val &= ~UTMIP_PD_CHRG; - writel(val, base + UTMIP_BAT_CHRG_CFG0); - val = readl(base + UTMIP_BIAS_CFG1); val &= ~UTMIP_BIAS_PDTRK_COUNT(~0); val |= UTMIP_BIAS_PDTRK_COUNT(0x5); writel(val, base + UTMIP_BIAS_CFG1); - if (phy->is_legacy_phy) { - val = readl(base + UTMIP_SPARE_CFG0); - if (phy->mode == TEGRA_USB_PHY_MODE_DEVICE) - val &= ~FUSE_SETUP_SEL; - else - val |= FUSE_SETUP_SEL; - writel(val, base + UTMIP_SPARE_CFG0); - } else { + val = readl(base + UTMIP_SPARE_CFG0); + if (config->xcvr_setup_use_fuses) + val |= FUSE_SETUP_SEL; + else + val &= ~FUSE_SETUP_SEL; + writel(val, base + UTMIP_SPARE_CFG0); + + if (!phy->is_legacy_phy) { val = readl(base + USB_SUSP_CTRL); val |= UTMIP_PHY_ENABLE; writel(val, base + USB_SUSP_CTRL); @@ -443,8 +503,18 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy) utmi_phy_clk_enable(phy); + if (phy->soc_config->requires_usbmode_setup) { + val = readl(base + USB_USBMODE); + val &= ~USB_USBMODE_MASK; + if (phy->mode == USB_DR_MODE_HOST) + val |= USB_USBMODE_HOST; + else + val |= USB_USBMODE_DEVICE; + writel(val, base + USB_USBMODE); + } + if (!phy->is_legacy_phy) - phy->set_pts(&phy->u_phy, 0); + set_pts(phy, 0); return 0; } @@ -456,7 +526,7 @@ static int utmi_phy_power_off(struct tegra_usb_phy *phy) utmi_phy_clk_disable(phy); - if (phy->mode == TEGRA_USB_PHY_MODE_DEVICE) { + if (phy->mode == USB_DR_MODE_PERIPHERAL) { val = readl(base + USB_SUSP_CTRL); val &= ~USB_WAKEUP_DEBOUNCE_COUNT(~0); val |= USB_WAKE_ON_CNNT_EN_DEV | USB_WAKEUP_DEBOUNCE_COUNT(5); @@ -541,11 +611,20 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy) int ret; unsigned long val; void __iomem *base = phy->regs; - struct tegra_ulpi_config *config = phy->config; - gpio_direction_output(config->reset_gpio, 0); + ret = gpio_direction_output(phy->reset_gpio, 0); + if (ret < 0) { + dev_err(phy->u_phy.dev, "gpio %d not set to 0\n", + phy->reset_gpio); + return ret; + } msleep(5); - gpio_direction_output(config->reset_gpio, 1); + ret = gpio_direction_output(phy->reset_gpio, 1); + if (ret < 0) { + dev_err(phy->u_phy.dev, "gpio %d not set to 1\n", + phy->reset_gpio); + return ret; + } clk_prepare_enable(phy->clk); msleep(1); @@ -603,63 +682,18 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy) static int ulpi_phy_power_off(struct tegra_usb_phy *phy) { - struct tegra_ulpi_config *config = phy->config; - clk_disable(phy->clk); - return gpio_direction_output(config->reset_gpio, 0); -} - -static int tegra_phy_init(struct usb_phy *x) -{ - struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy); - struct tegra_ulpi_config *ulpi_config; - int err; - - if (phy->is_ulpi_phy) { - ulpi_config = phy->config; - phy->clk = clk_get_sys(NULL, ulpi_config->clk); - if (IS_ERR(phy->clk)) { - pr_err("%s: can't get ulpi clock\n", __func__); - err = -ENXIO; - goto err1; - } - if (!gpio_is_valid(ulpi_config->reset_gpio)) - ulpi_config->reset_gpio = - of_get_named_gpio(phy->dev->of_node, - "nvidia,phy-reset-gpio", 0); - if (!gpio_is_valid(ulpi_config->reset_gpio)) { - pr_err("%s: invalid reset gpio: %d\n", __func__, - ulpi_config->reset_gpio); - err = -EINVAL; - goto err1; - } - gpio_request(ulpi_config->reset_gpio, "ulpi_phy_reset_b"); - gpio_direction_output(ulpi_config->reset_gpio, 0); - phy->ulpi = otg_ulpi_create(&ulpi_viewport_access_ops, 0); - phy->ulpi->io_priv = phy->regs + ULPI_VIEWPORT; - } else { - err = utmip_pad_open(phy); - if (err < 0) - goto err1; - } - return 0; -err1: - clk_disable_unprepare(phy->pll_u); - clk_put(phy->pll_u); - return err; + return gpio_direction_output(phy->reset_gpio, 0); } static void tegra_usb_phy_close(struct usb_phy *x) { struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy); - if (phy->is_ulpi_phy) - clk_put(phy->clk); - else - utmip_pad_close(phy); + if (!IS_ERR(phy->vbus)) + regulator_disable(phy->vbus); + clk_disable_unprepare(phy->pll_u); - clk_put(phy->pll_u); - kfree(phy); } static int tegra_usb_phy_power_on(struct tegra_usb_phy *phy) @@ -687,54 +721,57 @@ static int tegra_usb_phy_suspend(struct usb_phy *x, int suspend) return tegra_usb_phy_power_on(phy); } -struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance, - void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode, - void (*set_pts)(struct usb_phy *x, u8 pts_val), - void (*set_phcd)(struct usb_phy *x, bool enable)) +static int ulpi_open(struct tegra_usb_phy *phy) +{ + int err; + phy->clk = devm_clk_get(phy->u_phy.dev, "ulpi-link"); + if (IS_ERR(phy->clk)) { + pr_err("%s: can't get ulpi clock\n", __func__); + return PTR_ERR(phy->clk); + } + + err = devm_gpio_request(phy->u_phy.dev, phy->reset_gpio, + "ulpi_phy_reset_b"); + if (err < 0) { + dev_err(phy->u_phy.dev, "request failed for gpio: %d\n", + phy->reset_gpio); + return err; + } + + err = gpio_direction_output(phy->reset_gpio, 0); + if (err < 0) { + dev_err(phy->u_phy.dev, "gpio %d direction not set to output\n", + phy->reset_gpio); + return err; + } + + phy->ulpi = otg_ulpi_create(&ulpi_viewport_access_ops, 0); + if (!phy->ulpi) { + dev_err(phy->u_phy.dev, "otg_ulpi_create returned NULL\n"); + err = -ENOMEM; + return err; + } + + phy->ulpi->io_priv = phy->regs + ULPI_VIEWPORT; + return 0; +} + +static int tegra_usb_phy_init(struct tegra_usb_phy *phy) { - struct tegra_usb_phy *phy; unsigned long parent_rate; int i; int err; - struct device_node *np = dev->of_node; - - phy = kzalloc(sizeof(struct tegra_usb_phy), GFP_KERNEL); - if (!phy) - return ERR_PTR(-ENOMEM); - - phy->instance = instance; - phy->regs = regs; - phy->config = config; - phy->mode = phy_mode; - phy->dev = dev; - phy->is_legacy_phy = - of_property_read_bool(np, "nvidia,has-legacy-mode"); - phy->set_pts = set_pts; - phy->set_phcd = set_phcd; - err = of_property_match_string(np, "phy_type", "ulpi"); - if (err < 0) - phy->is_ulpi_phy = false; - else - phy->is_ulpi_phy = true; - - if (!phy->config) { - if (phy->is_ulpi_phy) { - pr_err("%s: ulpi phy configuration missing", __func__); - err = -EINVAL; - goto err0; - } else { - phy->config = &utmip_default[instance]; - } - } - phy->pll_u = clk_get_sys(NULL, "pll_u"); + phy->pll_u = devm_clk_get(phy->u_phy.dev, "pll_u"); if (IS_ERR(phy->pll_u)) { pr_err("Can't get pll_u clock\n"); - err = PTR_ERR(phy->pll_u); - goto err0; + return PTR_ERR(phy->pll_u); } - clk_prepare_enable(phy->pll_u); + + err = clk_prepare_enable(phy->pll_u); + if (err) + return err; parent_rate = clk_get_rate(clk_get_parent(phy->pll_u)); for (i = 0; i < ARRAY_SIZE(tegra_freq_table); i++) { @@ -746,23 +783,32 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance, if (!phy->freq) { pr_err("invalid pll_u parent rate %ld\n", parent_rate); err = -EINVAL; - goto err1; + goto fail; + } + + if (!IS_ERR(phy->vbus)) { + err = regulator_enable(phy->vbus); + if (err) { + dev_err(phy->u_phy.dev, + "failed to enable usb vbus regulator: %d\n", + err); + goto fail; + } } - phy->u_phy.init = tegra_phy_init; - phy->u_phy.shutdown = tegra_usb_phy_close; - phy->u_phy.set_suspend = tegra_usb_phy_suspend; + if (phy->is_ulpi_phy) + err = ulpi_open(phy); + else + err = utmip_pad_open(phy); + if (err < 0) + goto fail; - return phy; + return 0; -err1: +fail: clk_disable_unprepare(phy->pll_u); - clk_put(phy->pll_u); -err0: - kfree(phy); - return ERR_PTR(err); + return err; } -EXPORT_SYMBOL_GPL(tegra_usb_phy_open); void tegra_usb_phy_preresume(struct usb_phy *x) { @@ -801,3 +847,253 @@ void tegra_ehci_phy_restore_end(struct usb_phy *x) } EXPORT_SYMBOL_GPL(tegra_ehci_phy_restore_end); +static int read_utmi_param(struct platform_device *pdev, const char *param, + u8 *dest) +{ + u32 value; + int err = of_property_read_u32(pdev->dev.of_node, param, &value); + *dest = (u8)value; + if (err < 0) + dev_err(&pdev->dev, "Failed to read USB UTMI parameter %s: %d\n", + param, err); + return err; +} + +static int utmi_phy_probe(struct tegra_usb_phy *tegra_phy, + struct platform_device *pdev) +{ + struct resource *res; + int err; + struct tegra_utmip_config *config; + + tegra_phy->is_ulpi_phy = false; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res) { + dev_err(&pdev->dev, "Failed to get UTMI Pad regs\n"); + return -ENXIO; + } + + tegra_phy->pad_regs = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); + if (!tegra_phy->regs) { + dev_err(&pdev->dev, "Failed to remap UTMI Pad regs\n"); + return -ENOMEM; + } + + tegra_phy->config = devm_kzalloc(&pdev->dev, + sizeof(*tegra_phy->config), GFP_KERNEL); + if (!tegra_phy->config) { + dev_err(&pdev->dev, + "unable to allocate memory for USB UTMIP config\n"); + return -ENOMEM; + } + + config = tegra_phy->config; + + err = read_utmi_param(pdev, "nvidia,hssync-start-delay", + &config->hssync_start_delay); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,elastic-limit", + &config->elastic_limit); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,idle-wait-delay", + &config->idle_wait_delay); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,term-range-adj", + &config->term_range_adj); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,xcvr-lsfslew", + &config->xcvr_lsfslew); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,xcvr-lsrslew", + &config->xcvr_lsrslew); + if (err < 0) + return err; + + if (tegra_phy->soc_config->requires_extra_tuning_parameters) { + err = read_utmi_param(pdev, "nvidia,xcvr-hsslew", + &config->xcvr_hsslew); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,hssquelch-level", + &config->hssquelch_level); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,hsdiscon-level", + &config->hsdiscon_level); + if (err < 0) + return err; + } + + config->xcvr_setup_use_fuses = of_property_read_bool( + pdev->dev.of_node, "nvidia,xcvr-setup-use-fuses"); + + if (!config->xcvr_setup_use_fuses) { + err = read_utmi_param(pdev, "nvidia,xcvr-setup", + &config->xcvr_setup); + if (err < 0) + return err; + } + + return 0; +} + +static const struct tegra_phy_soc_config tegra20_soc_config = { + .utmi_pll_config_in_car_module = false, + .has_hostpc = false, + .requires_usbmode_setup = false, + .requires_extra_tuning_parameters = false, +}; + +static const struct tegra_phy_soc_config tegra30_soc_config = { + .utmi_pll_config_in_car_module = true, + .has_hostpc = true, + .requires_usbmode_setup = true, + .requires_extra_tuning_parameters = true, +}; + +static struct of_device_id tegra_usb_phy_id_table[] = { + { .compatible = "nvidia,tegra30-usb-phy", .data = &tegra30_soc_config }, + { .compatible = "nvidia,tegra20-usb-phy", .data = &tegra20_soc_config }, + { }, +}; +MODULE_DEVICE_TABLE(of, tegra_usb_phy_id_table); + +static int tegra_usb_phy_probe(struct platform_device *pdev) +{ + const struct of_device_id *match; + struct resource *res; + struct tegra_usb_phy *tegra_phy = NULL; + struct device_node *np = pdev->dev.of_node; + enum usb_phy_interface phy_type; + int err; + + tegra_phy = devm_kzalloc(&pdev->dev, sizeof(*tegra_phy), GFP_KERNEL); + if (!tegra_phy) { + dev_err(&pdev->dev, "unable to allocate memory for USB2 PHY\n"); + return -ENOMEM; + } + + match = of_match_device(tegra_usb_phy_id_table, &pdev->dev); + if (!match) { + dev_err(&pdev->dev, "Error: No device match found\n"); + return -ENODEV; + } + tegra_phy->soc_config = match->data; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "Failed to get I/O memory\n"); + return -ENXIO; + } + + tegra_phy->regs = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); + if (!tegra_phy->regs) { + dev_err(&pdev->dev, "Failed to remap I/O memory\n"); + return -ENOMEM; + } + + tegra_phy->is_legacy_phy = + of_property_read_bool(np, "nvidia,has-legacy-mode"); + + phy_type = of_usb_get_phy_mode(np); + switch (phy_type) { + case USBPHY_INTERFACE_MODE_UTMI: + err = utmi_phy_probe(tegra_phy, pdev); + if (err < 0) + return err; + break; + + case USBPHY_INTERFACE_MODE_ULPI: + tegra_phy->is_ulpi_phy = true; + + tegra_phy->reset_gpio = + of_get_named_gpio(np, "nvidia,phy-reset-gpio", 0); + if (!gpio_is_valid(tegra_phy->reset_gpio)) { + dev_err(&pdev->dev, "invalid gpio: %d\n", + tegra_phy->reset_gpio); + return tegra_phy->reset_gpio; + } + tegra_phy->config = NULL; + break; + + default: + dev_err(&pdev->dev, "phy_type is invalid or unsupported\n"); + return -EINVAL; + } + + if (of_find_property(np, "dr_mode", NULL)) + tegra_phy->mode = of_usb_get_dr_mode(np); + else + tegra_phy->mode = USB_DR_MODE_HOST; + + if (tegra_phy->mode == USB_DR_MODE_UNKNOWN) { + dev_err(&pdev->dev, "dr_mode is invalid\n"); + return -EINVAL; + } + + /* On some boards, the VBUS regulator doesn't need to be controlled */ + if (of_find_property(np, "vbus-supply", NULL)) { + tegra_phy->vbus = devm_regulator_get(&pdev->dev, "vbus"); + if (IS_ERR(tegra_phy->vbus)) + return PTR_ERR(tegra_phy->vbus); + } else { + dev_notice(&pdev->dev, "no vbus regulator"); + tegra_phy->vbus = ERR_PTR(-ENODEV); + } + + tegra_phy->u_phy.dev = &pdev->dev; + err = tegra_usb_phy_init(tegra_phy); + if (err < 0) + return err; + + tegra_phy->u_phy.shutdown = tegra_usb_phy_close; + tegra_phy->u_phy.set_suspend = tegra_usb_phy_suspend; + + platform_set_drvdata(pdev, tegra_phy); + + err = usb_add_phy_dev(&tegra_phy->u_phy); + if (err < 0) { + tegra_usb_phy_close(&tegra_phy->u_phy); + return err; + } + + return 0; +} + +static int tegra_usb_phy_remove(struct platform_device *pdev) +{ + struct tegra_usb_phy *tegra_phy = platform_get_drvdata(pdev); + + usb_remove_phy(&tegra_phy->u_phy); + + return 0; +} + +static struct platform_driver tegra_usb_phy_driver = { + .probe = tegra_usb_phy_probe, + .remove = tegra_usb_phy_remove, + .driver = { + .name = "tegra-phy", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(tegra_usb_phy_id_table), + }, +}; +module_platform_driver(tegra_usb_phy_driver); + +MODULE_DESCRIPTION("Tegra USB PHY driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/phy/phy-twl4030-usb.c b/drivers/usb/phy/phy-twl4030-usb.c index 8f78d2d40722..90730c8762b8 100644 --- a/drivers/usb/phy/phy-twl4030-usb.c +++ b/drivers/usb/phy/phy-twl4030-usb.c @@ -648,7 +648,7 @@ static int twl4030_set_host(struct usb_otg *otg, struct usb_bus *host) static int twl4030_usb_probe(struct platform_device *pdev) { - struct twl4030_usb_data *pdata = pdev->dev.platform_data; + struct twl4030_usb_data *pdata = dev_get_platdata(&pdev->dev); struct twl4030_usb *twl; int status, err; struct usb_otg *otg; diff --git a/drivers/usb/phy/phy-twl6030-usb.c b/drivers/usb/phy/phy-twl6030-usb.c index 9de7ada90a8b..16dbc9382678 100644 --- a/drivers/usb/phy/phy-twl6030-usb.c +++ b/drivers/usb/phy/phy-twl6030-usb.c @@ -324,7 +324,7 @@ static int twl6030_usb_probe(struct platform_device *pdev) int status, err; struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; - struct twl4030_usb_data *pdata = dev->platform_data; + struct twl4030_usb_data *pdata = dev_get_platdata(dev); twl = devm_kzalloc(dev, sizeof *twl, GFP_KERNEL); if (!twl) @@ -347,7 +347,7 @@ static int twl6030_usb_probe(struct platform_device *pdev) if (np) { twl->regulator = "usb"; } else if (pdata) { - if (pdata->features & TWL6025_SUBCLASS) + if (pdata->features & TWL6032_SUBCLASS) twl->regulator = "ldousb"; else twl->regulator = "vusb"; diff --git a/drivers/usb/phy/phy-ulpi-viewport.c b/drivers/usb/phy/phy-ulpi-viewport.c index c5ba7e5423fc..7c22a5390fc3 100644 --- a/drivers/usb/phy/phy-ulpi-viewport.c +++ b/drivers/usb/phy/phy-ulpi-viewport.c @@ -12,6 +12,7 @@ * */ +#include <linux/export.h> #include <linux/kernel.h> #include <linux/usb.h> #include <linux/io.h> @@ -78,3 +79,4 @@ struct usb_phy_io_ops ulpi_viewport_access_ops = { .read = ulpi_viewport_read, .write = ulpi_viewport_write, }; +EXPORT_SYMBOL_GPL(ulpi_viewport_access_ops); diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index cfd205036aba..17267b0a2e95 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -416,7 +416,7 @@ static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev) */ static int usbhs_probe(struct platform_device *pdev) { - struct renesas_usbhs_platform_info *info = pdev->dev.platform_data; + struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev); struct renesas_usbhs_driver_callback *dfunc; struct usbhs_priv *priv; struct resource *res, *irq_res; @@ -499,7 +499,7 @@ static int usbhs_probe(struct platform_device *pdev) goto probe_end_fifo_exit; /* dev_set_drvdata should be called after usbhs_mod_init */ - dev_set_drvdata(&pdev->dev, priv); + platform_set_drvdata(pdev, priv); /* * deviece reset here because @@ -558,7 +558,7 @@ probe_end_pipe_exit: static int usbhs_remove(struct platform_device *pdev) { struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); - struct renesas_usbhs_platform_info *info = pdev->dev.platform_data; + struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev); struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback; dev_dbg(&pdev->dev, "usb remove\n"); diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index ed4949faa70d..3385aeb5a364 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -77,9 +77,9 @@ struct usbhsg_recip_handle { struct usbhsg_gpriv, mod) #define __usbhsg_for_each_uep(start, pos, g, i) \ - for (i = start, pos = (g)->uep + i; \ - i < (g)->uep_size; \ - i++, pos = (g)->uep + i) + for ((i) = start; \ + ((i) < (g)->uep_size) && ((pos) = (g)->uep + (i)); \ + (i)++) #define usbhsg_for_each_uep(pos, gpriv, i) \ __usbhsg_for_each_uep(1, pos, gpriv, i) @@ -855,10 +855,6 @@ static int usbhsg_gadget_stop(struct usb_gadget *gadget, struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); - if (!driver || - !driver->unbind) - return -EINVAL; - usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD); gpriv->driver = NULL; diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c index b86815421c8d..e40f565004d0 100644 --- a/drivers/usb/renesas_usbhs/mod_host.c +++ b/drivers/usb/renesas_usbhs/mod_host.c @@ -111,9 +111,9 @@ static const char usbhsh_hcd_name[] = "renesas_usbhs host"; container_of(usbhs_mod_get(priv, USBHS_HOST), struct usbhsh_hpriv, mod) #define __usbhsh_for_each_udev(start, pos, h, i) \ - for (i = start, pos = (h)->udev + i; \ - i < USBHSH_DEVICE_MAX; \ - i++, pos = (h)->udev + i) + for ((i) = start; \ + ((i) < USBHSH_DEVICE_MAX) && ((pos) = (h)->udev + (i)); \ + (i)++) #define usbhsh_for_each_udev(pos, hpriv, i) \ __usbhsh_for_each_udev(1, pos, hpriv, i) diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h index b476fde955bf..3e5349879838 100644 --- a/drivers/usb/renesas_usbhs/pipe.h +++ b/drivers/usb/renesas_usbhs/pipe.h @@ -54,9 +54,9 @@ struct usbhs_pipe_info { * pipe list */ #define __usbhs_for_each_pipe(start, pos, info, i) \ - for (i = start, pos = (info)->pipe + i; \ - i < (info)->size; \ - i++, pos = (info)->pipe + i) + for ((i) = start; \ + ((i) < (info)->size) && ((pos) = (info)->pipe + (i)); \ + (i)++) #define usbhs_for_each_pipe(pos, priv, i) \ __usbhs_for_each_pipe(1, pos, &((priv)->pipe_info), i) diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index 1d55762afbb1..c454bfa22a10 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -51,6 +51,24 @@ config USB_SERIAL_GENERIC support" be compiled as a module for this driver to be used properly. +config USB_SERIAL_SIMPLE + tristate "USB Serial Simple Driver" + help + Say Y here to use the USB serial "simple" driver. This driver + handles a wide range of very simple devices, all in one + driver. Specifically, it supports: + - Suunto ANT+ USB device. + - Fundamental Software dongle. + - HP4x calculators + - a number of Motoroloa phones + - Siemens USB/MPI adapter. + - ViVOtech ViVOpay USB device. + - Infineon Modem Flashloader USB interface + - ZIO Motherboard USB serial interface + + To compile this driver as a module, choose M here: the module + will be called usb-serial-simple. + config USB_SERIAL_AIRCABLE tristate "USB AIRcable Bluetooth Dongle Driver" help @@ -158,14 +176,6 @@ config USB_SERIAL_FTDI_SIO To compile this driver as a module, choose M here: the module will be called ftdi_sio. -config USB_SERIAL_FUNSOFT - tristate "USB Fundamental Software Dongle Driver" - ---help--- - Say Y here if you want to use the Fundamental Software dongle. - - To compile this driver as a module, choose M here: the - module will be called funsoft. - config USB_SERIAL_VISOR tristate "USB Handspring Visor / Palm m50x / Sony Clie Driver" help @@ -462,15 +472,6 @@ config USB_SERIAL_MOS7840 To compile this driver as a module, choose M here: the module will be called mos7840. If unsure, choose N. -config USB_SERIAL_MOTOROLA - tristate "USB Motorola Phone modem driver" - ---help--- - Say Y here if you want to use a Motorola phone with a USB - connector as a modem link. - - To compile this driver as a module, choose M here: the - module will be called moto_modem. If unsure, choose N. - config USB_SERIAL_NAVMAN tristate "USB Navman GPS device" help @@ -525,14 +526,6 @@ config USB_SERIAL_SPCP8X5 To compile this driver as a module, choose M here: the module will be called spcp8x5. -config USB_SERIAL_HP4X - tristate "USB HP4x Calculators support" - help - Say Y here if you want to use an Hewlett-Packard 4x Calculator. - - To compile this driver as a module, choose M here: the - module will be called hp4x. - config USB_SERIAL_SAFE tristate "USB Safe Serial (Encapsulated) Driver" @@ -540,14 +533,6 @@ config USB_SERIAL_SAFE_PADDED bool "USB Secure Encapsulated Driver - Padded" depends on USB_SERIAL_SAFE -config USB_SERIAL_SIEMENS_MPI - tristate "USB Siemens MPI driver" - help - Say M here if you want to use a Siemens USB/MPI adapter. - - To compile this driver as a module, choose M here: the - module will be called siemens_mpi. - config USB_SERIAL_SIERRAWIRELESS tristate "USB Sierra Wireless Driver" help @@ -639,14 +624,6 @@ config USB_SERIAL_OPTICON To compile this driver as a module, choose M here: the module will be called opticon. -config USB_SERIAL_VIVOPAY_SERIAL - tristate "USB ViVOpay serial interface driver" - help - Say Y here if you want to use a ViVOtech ViVOpay USB device. - - To compile this driver as a module, choose M here: the - module will be called vivopay-serial. - config USB_SERIAL_XSENS_MT tristate "Xsens motion tracker serial interface driver" help @@ -659,14 +636,6 @@ config USB_SERIAL_XSENS_MT To compile this driver as a module, choose M here: the module will be called xsens_mt. -config USB_SERIAL_ZIO - tristate "ZIO Motherboard USB serial interface driver" - help - Say Y here if you want to use ZIO Motherboard. - - To compile this driver as a module, choose M here: the - module will be called zio. - config USB_SERIAL_WISHBONE tristate "USB-Wishbone adapter interface driver" help diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile index cec63fa19104..42670f0b5bc0 100644 --- a/drivers/usb/serial/Makefile +++ b/drivers/usb/serial/Makefile @@ -24,9 +24,7 @@ obj-$(CONFIG_USB_SERIAL_EDGEPORT_TI) += io_ti.o obj-$(CONFIG_USB_SERIAL_EMPEG) += empeg.o obj-$(CONFIG_USB_SERIAL_F81232) += f81232.o obj-$(CONFIG_USB_SERIAL_FTDI_SIO) += ftdi_sio.o -obj-$(CONFIG_USB_SERIAL_FUNSOFT) += funsoft.o obj-$(CONFIG_USB_SERIAL_GARMIN) += garmin_gps.o -obj-$(CONFIG_USB_SERIAL_HP4X) += hp4x.o obj-$(CONFIG_USB_SERIAL_IPAQ) += ipaq.o obj-$(CONFIG_USB_SERIAL_IPW) += ipw.o obj-$(CONFIG_USB_SERIAL_IR) += ir-usb.o @@ -39,7 +37,6 @@ obj-$(CONFIG_USB_SERIAL_MCT_U232) += mct_u232.o obj-$(CONFIG_USB_SERIAL_METRO) += metro-usb.o obj-$(CONFIG_USB_SERIAL_MOS7720) += mos7720.o obj-$(CONFIG_USB_SERIAL_MOS7840) += mos7840.o -obj-$(CONFIG_USB_SERIAL_MOTOROLA) += moto_modem.o obj-$(CONFIG_USB_SERIAL_NAVMAN) += navman.o obj-$(CONFIG_USB_SERIAL_OMNINET) += omninet.o obj-$(CONFIG_USB_SERIAL_OPTICON) += opticon.o @@ -50,8 +47,8 @@ obj-$(CONFIG_USB_SERIAL_QCAUX) += qcaux.o obj-$(CONFIG_USB_SERIAL_QUALCOMM) += qcserial.o obj-$(CONFIG_USB_SERIAL_QT2) += quatech2.o obj-$(CONFIG_USB_SERIAL_SAFE) += safe_serial.o -obj-$(CONFIG_USB_SERIAL_SIEMENS_MPI) += siemens_mpi.o obj-$(CONFIG_USB_SERIAL_SIERRAWIRELESS) += sierra.o +obj-$(CONFIG_USB_SERIAL_SIMPLE) += usb-serial-simple.o obj-$(CONFIG_USB_SERIAL_SPCP8X5) += spcp8x5.o obj-$(CONFIG_USB_SERIAL_SSU100) += ssu100.o obj-$(CONFIG_USB_SERIAL_SYMBOL) += symbolserial.o @@ -61,7 +58,5 @@ obj-$(CONFIG_USB_SERIAL_VISOR) += visor.o obj-$(CONFIG_USB_SERIAL_WISHBONE) += wishbone-serial.o obj-$(CONFIG_USB_SERIAL_WHITEHEAT) += whiteheat.o obj-$(CONFIG_USB_SERIAL_XIRCOM) += keyspan_pda.o -obj-$(CONFIG_USB_SERIAL_VIVOPAY_SERIAL) += vivopay-serial.o obj-$(CONFIG_USB_SERIAL_XSENS_MT) += xsens_mt.o -obj-$(CONFIG_USB_SERIAL_ZIO) += zio.o obj-$(CONFIG_USB_SERIAL_ZTE) += zte_ev.o diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 3b16118cbf62..bc77e955cbef 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -43,7 +43,7 @@ #define DRIVER_NAME "ark3116" /* usb timeout of 1 second */ -#define ARK_TIMEOUT (1*HZ) +#define ARK_TIMEOUT 1000 static const struct usb_device_id id_table[] = { { USB_DEVICE(0x6547, 0x0232) }, @@ -413,8 +413,8 @@ static int ark3116_ioctl(struct tty_struct *tty, /* XXX: Some of these values are probably wrong. */ memset(&serstruct, 0, sizeof(serstruct)); serstruct.type = PORT_16654; - serstruct.line = port->serial->minor; - serstruct.port = port->number; + serstruct.line = port->minor; + serstruct.port = port->port_number; serstruct.custom_divisor = 0; serstruct.baud_base = 460800; diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c index 3c4db6d196c6..6335490d5760 100644 --- a/drivers/usb/serial/bus.c +++ b/drivers/usb/serial/bus.c @@ -38,15 +38,14 @@ static int usb_serial_device_match(struct device *dev, return 0; } -static ssize_t show_port_number(struct device *dev, +static ssize_t port_number_show(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_serial_port *port = to_usb_serial_port(dev); - return sprintf(buf, "%d\n", port->number - port->serial->minor); + return sprintf(buf, "%d\n", port->port_number); } - -static DEVICE_ATTR(port_number, S_IRUGO, show_port_number, NULL); +static DEVICE_ATTR_RO(port_number); static int usb_serial_device_probe(struct device *dev) { @@ -80,7 +79,7 @@ static int usb_serial_device_probe(struct device *dev) goto exit_with_autopm; } - minor = port->number; + minor = port->minor; tty_register_device(usb_serial_tty_driver, minor, dev); dev_info(&port->serial->dev->dev, "%s converter now attached to ttyUSB%d\n", @@ -106,7 +105,7 @@ static int usb_serial_device_remove(struct device *dev) /* make sure suspend/resume doesn't race against port_remove */ usb_autopm_get_interface(port->serial->interface); - minor = port->number; + minor = port->minor; tty_unregister_device(usb_serial_tty_driver, minor); device_remove_file(&port->dev, &dev_attr_port_number); @@ -122,7 +121,7 @@ static int usb_serial_device_remove(struct device *dev) return retval; } -static ssize_t store_new_id(struct device_driver *driver, +static ssize_t new_id_store(struct device_driver *driver, const char *buf, size_t count) { struct usb_serial_driver *usb_drv = to_usb_serial_driver(driver); @@ -135,17 +134,19 @@ static ssize_t store_new_id(struct device_driver *driver, return retval; } -static ssize_t show_dynids(struct device_driver *driver, char *buf) +static ssize_t new_id_show(struct device_driver *driver, char *buf) { struct usb_serial_driver *usb_drv = to_usb_serial_driver(driver); return usb_show_dynids(&usb_drv->dynids, buf); } +static DRIVER_ATTR_RW(new_id); -static struct driver_attribute drv_attrs[] = { - __ATTR(new_id, S_IRUGO | S_IWUSR, show_dynids, store_new_id), - __ATTR_NULL, +static struct attribute *usb_serial_drv_attrs[] = { + &driver_attr_new_id.attr, + NULL, }; +ATTRIBUTE_GROUPS(usb_serial_drv); static void free_dynids(struct usb_serial_driver *drv) { @@ -164,7 +165,7 @@ struct bus_type usb_serial_bus_type = { .match = usb_serial_device_match, .probe = usb_serial_device_probe, .remove = usb_serial_device_remove, - .drv_attrs = drv_attrs, + .drv_groups = usb_serial_drv_groups, }; int usb_serial_bus_register(struct usb_serial_driver *driver) diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c index 5f3bcd31e204..c69bb50d4663 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -108,18 +108,18 @@ static int usb_console_setup(struct console *co, char *options) * no need to check the index here: if the index is wrong, console * code won't call us */ - serial = usb_serial_get_by_index(co->index); - if (serial == NULL) { + port = usb_serial_port_get_by_minor(co->index); + if (port == NULL) { /* no device is connected yet, sorry :( */ pr_err("No USB device connected to ttyUSB%i\n", co->index); return -ENODEV; } + serial = port->serial; retval = usb_autopm_get_interface(serial->interface); if (retval) goto error_get_interface; - port = serial->port[co->index - serial->minor]; tty_port_tty_set(&port->port, NULL); info->port = port; @@ -151,11 +151,7 @@ static int usb_console_setup(struct console *co, char *options) /* only call the device specific open if this * is the first time the port is opened */ - if (serial->type->open) - retval = serial->type->open(NULL, port); - else - retval = usb_serial_generic_open(NULL, port); - + retval = serial->type->open(NULL, port); if (retval) { dev_err(&port->dev, "could not open USB console port\n"); goto fail; @@ -210,10 +206,10 @@ static void usb_console_write(struct console *co, if (count == 0) return; - pr_debug("%s - port %d, %d byte(s)\n", __func__, port->number, count); + dev_dbg(&port->dev, "%s - %d byte(s)\n", __func__, count); if (!port->port.console) { - pr_debug("%s - port not opened\n", __func__); + dev_dbg(&port->dev, "%s - port not opened\n", __func__); return; } @@ -230,21 +226,14 @@ static void usb_console_write(struct console *co, } /* pass on to the driver specific version of this function if it is available */ - if (serial->type->write) - retval = serial->type->write(NULL, port, buf, i); - else - retval = usb_serial_generic_write(NULL, port, buf, i); - pr_debug("%s - return value : %d\n", __func__, retval); + retval = serial->type->write(NULL, port, buf, i); + dev_dbg(&port->dev, "%s - write: %d\n", __func__, retval); if (lf) { /* append CR after LF */ unsigned char cr = 13; - if (serial->type->write) - retval = serial->type->write(NULL, - port, &cr, 1); - else - retval = usb_serial_generic_write(NULL, - port, &cr, 1); - pr_debug("%s - return value : %d\n", __func__, retval); + retval = serial->type->write(NULL, port, &cr, 1); + dev_dbg(&port->dev, "%s - write cr: %d\n", + __func__, retval); } buf += i; count -= i; diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 2c659553c07c..6987b535aa98 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -53,6 +53,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ + { USB_DEVICE(0x0846, 0x1100) }, /* NetGear Managed Switch M4100 series, M5300 series, M7100 series */ { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ @@ -118,6 +119,8 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */ { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */ { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */ + { USB_DEVICE(0x10C4, 0x88A4) }, /* MMB Networks ZigBee USB Device */ + { USB_DEVICE(0x10C4, 0x88A5) }, /* Planet Innovation Ingeni ZigBee USB Device */ { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */ @@ -148,6 +151,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ + { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */ { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */ { USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */ @@ -666,11 +670,6 @@ static void cp210x_set_termios(struct tty_struct *tty, unsigned int bits; unsigned int modem_ctl[4]; - dev_dbg(dev, "%s - port %d\n", __func__, port->number); - - if (!tty) - return; - cflag = tty->termios.c_cflag; old_cflag = old_termios->c_cflag; diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index d341555d37d8..558605d646f3 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -65,6 +65,7 @@ static const struct usb_device_id id_table_earthmate[] = { static const struct usb_device_id id_table_cyphidcomrs232[] = { { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, { USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) }, + { USB_DEVICE(VENDOR_ID_FRWD, PRODUCT_ID_CYPHIDCOM_FRWD) }, { } /* Terminating entry */ }; @@ -78,6 +79,7 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) }, { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, { USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) }, + { USB_DEVICE(VENDOR_ID_FRWD, PRODUCT_ID_CYPHIDCOM_FRWD) }, { USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) }, { } /* Terminating entry */ }; @@ -229,6 +231,12 @@ static struct usb_serial_driver * const serial_drivers[] = { * Cypress serial helper functions *****************************************************************************/ +/* FRWD Dongle hidcom needs to skip reset and speed checks */ +static inline bool is_frwd(struct usb_device *dev) +{ + return ((le16_to_cpu(dev->descriptor.idVendor) == VENDOR_ID_FRWD) && + (le16_to_cpu(dev->descriptor.idProduct) == PRODUCT_ID_CYPHIDCOM_FRWD)); +} static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) { @@ -238,6 +246,10 @@ static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) if (unstable_bauds) return new_rate; + /* FRWD Dongle uses 115200 bps */ + if (is_frwd(port->serial->dev)) + return new_rate; + /* * The general purpose firmware for the Cypress M8 allows for * a maximum speed of 57600bps (I have no idea whether DeLorme @@ -423,7 +435,7 @@ static void cypress_set_dead(struct usb_serial_port *port) spin_unlock_irqrestore(&priv->lock, flags); dev_err(&port->dev, "cypress_m8 suspending failing port %d - " - "interval might be too short\n", port->number); + "interval might be too short\n", port->port_number); } @@ -448,7 +460,11 @@ static int cypress_generic_port_probe(struct usb_serial_port *port) return -ENOMEM; } - usb_reset_configuration(serial->dev); + /* Skip reset for FRWD device. It is a workaound: + device hangs if it receives SET_CONFIGURE in Configured + state. */ + if (!is_frwd(serial->dev)) + usb_reset_configuration(serial->dev); priv->cmd_ctrl = 0; priv->line_control = 0; @@ -479,6 +495,8 @@ static int cypress_generic_port_probe(struct usb_serial_port *port) } usb_set_serial_port_data(port, priv); + port->port.drain_delay = 256; + return 0; } @@ -609,7 +627,7 @@ static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port) __func__, result); cypress_set_dead(port); } - port->port.drain_delay = 256; + return result; } /* cypress_open */ @@ -651,7 +669,7 @@ static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port, { struct cypress_private *priv = usb_get_serial_port_data(port); - dev_dbg(&port->dev, "%s - port %d, %d bytes\n", __func__, port->number, count); + dev_dbg(&port->dev, "%s - %d bytes\n", __func__, count); /* line control commands, which need to be executed immediately, are not put into the buffer for obvious reasons. diff --git a/drivers/usb/serial/cypress_m8.h b/drivers/usb/serial/cypress_m8.h index 67cf60826884..b461311a2ae7 100644 --- a/drivers/usb/serial/cypress_m8.h +++ b/drivers/usb/serial/cypress_m8.h @@ -24,6 +24,10 @@ #define VENDOR_ID_CYPRESS 0x04b4 #define PRODUCT_ID_CYPHIDCOM 0x5500 +/* FRWD Dongle - a GPS sports watch */ +#define VENDOR_ID_FRWD 0x6737 +#define PRODUCT_ID_CYPHIDCOM_FRWD 0x0001 + /* Powercom UPS, chip CY7C63723 */ #define VENDOR_ID_POWERCOM 0x0d9f #define PRODUCT_ID_UPS 0x0002 diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index 7b807d389527..19b467fe0388 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -1304,11 +1304,7 @@ static void digi_release(struct usb_serial *serial) static int digi_port_probe(struct usb_serial_port *port) { - unsigned port_num; - - port_num = port->number - port->serial->minor; - - return digi_port_init(port, port_num); + return digi_port_init(port, port->port_number); } static int digi_port_remove(struct usb_serial_port *port) diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index 090b411d893f..639a18fb67e6 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -165,11 +165,12 @@ static void f81232_set_termios(struct tty_struct *tty, /* FIXME - Stubbed out for now */ /* Don't change anything if nothing has changed */ - if (!tty_termios_hw_change(&tty->termios, old_termios)) + if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; /* Do the real work here... */ - tty_termios_copy_hw(&tty->termios, old_termios); + if (old_termios) + tty_termios_copy_hw(&tty->termios, old_termios); } static int f81232_tiocmget(struct tty_struct *tty) @@ -187,12 +188,11 @@ static int f81232_tiocmset(struct tty_struct *tty, static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; int result; /* Setup termios */ if (tty) - f81232_set_termios(tty, port, &tmp_termios); + f81232_set_termios(tty, port, NULL); result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (result) { @@ -207,7 +207,6 @@ static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port) return result; } - port->port.drain_delay = 256; return 0; } @@ -288,15 +287,14 @@ static int f81232_ioctl(struct tty_struct *tty, struct serial_struct ser; struct usb_serial_port *port = tty->driver_data; - dev_dbg(&port->dev, "%s (%d) cmd = 0x%04x\n", __func__, - port->number, cmd); + dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd); switch (cmd) { case TIOCGSERIAL: memset(&ser, 0, sizeof ser); ser.type = PORT_16654; - ser.line = port->serial->minor; - ser.port = port->number; + ser.line = port->minor; + ser.port = port->port_number; ser.baud_base = 460800; if (copy_to_user((void __user *)arg, &ser, sizeof ser)) @@ -323,6 +321,8 @@ static int f81232_port_probe(struct usb_serial_port *port) usb_set_serial_port_data(port, priv); + port->port.drain_delay = 256; + return 0; } diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 7260ec660347..c45f9c0a1b34 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -51,8 +51,6 @@ #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>, Andreas Mohr, Johan Hovold <jhovold@gmail.com>" #define DRIVER_DESC "USB FTDI Serial Converters Driver" -static __u16 vendor = FTDI_VID; -static __u16 product; struct ftdi_private { enum ftdi_chip_type chip_type; @@ -144,8 +142,8 @@ static struct ftdi_sio_quirk ftdi_8u2232c_quirk = { /* - * Device ID not listed? Test via module params product/vendor or - * /sys/bus/usb/ftdi_sio/new_id, then send patch/report! + * Device ID not listed? Test it using + * /sys/bus/usb-serial/drivers/ftdi_sio/new_id and send a patch or report. */ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_ZEITCONTROL_TAGTRACE_MIFARE_PID) }, @@ -735,9 +733,34 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID), .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) }, - { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_SERIAL_VX7_PID) }, - { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_CT29B_PID) }, - { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_RTS01_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S03_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_59_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_57A_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_57B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29A_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29F_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_62B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S01_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_63_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29C_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_81B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_82B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_K5D_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_K4Y_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_K5G_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S05_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_60_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_61_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_62_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_63B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_64_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_65_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_92_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_92D_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_W5R_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_A5R_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_PW1_PID) }, { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) }, { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) }, { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) }, @@ -881,7 +904,6 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_LUMEL_PD12_PID) }, /* Crucible Devices */ { USB_DEVICE(FTDI_VID, FTDI_CT_COMET_PID) }, - { }, /* Optional parameter entry */ { } /* Terminating entry */ }; @@ -905,9 +927,6 @@ static const char *ftdi_chip_name[] = { #define FTDI_STATUS_B1_MASK (FTDI_RS_BI) /* End TIOCMIWAIT */ -#define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \ - | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP) - /* function prototypes for a FTDI serial converter */ static int ftdi_sio_probe(struct usb_serial *serial, const struct usb_device_id *id); @@ -974,10 +993,6 @@ static struct usb_serial_driver * const serial_drivers[] = { #define WDR_TIMEOUT 5000 /* default urb timeout */ #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */ -/* High and low are for DTR, RTS etc etc */ -#define HIGH 1 -#define LOW 0 - /* * *************************************************************************** * Utility functions @@ -1546,8 +1561,8 @@ static void ftdi_set_max_packet_size(struct usb_serial_port *port) * *************************************************************************** */ -static ssize_t show_latency_timer(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t latency_timer_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct usb_serial_port *port = to_usb_serial_port(dev); struct ftdi_private *priv = usb_get_serial_port_data(port); @@ -1557,11 +1572,10 @@ static ssize_t show_latency_timer(struct device *dev, return sprintf(buf, "%i\n", priv->latency); } - /* Write a new value of the latency timer, in units of milliseconds. */ -static ssize_t store_latency_timer(struct device *dev, - struct device_attribute *attr, const char *valbuf, - size_t count) +static ssize_t latency_timer_store(struct device *dev, + struct device_attribute *attr, + const char *valbuf, size_t count) { struct usb_serial_port *port = to_usb_serial_port(dev); struct ftdi_private *priv = usb_get_serial_port_data(port); @@ -1574,6 +1588,7 @@ static ssize_t store_latency_timer(struct device *dev, return -EIO; return count; } +static DEVICE_ATTR_RW(latency_timer); /* Write an event character directly to the FTDI register. The ASCII value is in the low 8 bits, with the enable bit in the 9th bit. */ @@ -1601,9 +1616,6 @@ static ssize_t store_event_char(struct device *dev, return count; } - -static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, - store_latency_timer); static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char); static int create_sysfs_attrs(struct usb_serial_port *port) @@ -1842,7 +1854,6 @@ static int ftdi_sio_port_remove(struct usb_serial_port *port) static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios dummy; struct usb_device *dev = port->serial->dev; struct ftdi_private *priv = usb_get_serial_port_data(port); @@ -1858,10 +1869,8 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port) This is same behaviour as serial.c/rs_open() - Kuba */ /* ftdi_set_termios will send usb control messages */ - if (tty) { - memset(&dummy, 0, sizeof(dummy)); - ftdi_set_termios(tty, port, &dummy); - } + if (tty) + ftdi_set_termios(tty, port, NULL); return usb_serial_generic_open(tty, port); } @@ -2190,7 +2199,7 @@ no_data_parity_stop_changes: dev_err(ddev, "%s urb failed to set baudrate\n", __func__); mutex_unlock(&priv->cfg_lock); /* Ensure RTS and DTR are raised when baudrate changed from 0 */ - if (!old_termios || (old_termios->c_cflag & CBAUD) == B0) + if (old_termios && (old_termios->c_cflag & CBAUD) == B0) set_mctrl(port, TIOCM_DTR | TIOCM_RTS); } @@ -2380,38 +2389,11 @@ static int ftdi_ioctl(struct tty_struct *tty, return -ENOIOCTLCMD; } -static int __init ftdi_init(void) -{ - if (vendor > 0 && product > 0) { - /* Add user specified VID/PID to reserved element of table. */ - int i; - for (i = 0; id_table_combined[i].idVendor; i++) - ; - id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; - id_table_combined[i].idVendor = vendor; - id_table_combined[i].idProduct = product; - } - return usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, id_table_combined); -} - -static void __exit ftdi_exit(void) -{ - usb_serial_deregister_drivers(serial_drivers); -} - - -module_init(ftdi_init); -module_exit(ftdi_exit); +module_usb_serial_driver(serial_drivers, id_table_combined); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); -module_param(vendor, ushort, 0); -MODULE_PARM_DESC(vendor, "User specified vendor ID (default=" - __MODULE_STRING(FTDI_VID)")"); -module_param(product, ushort, 0); -MODULE_PARM_DESC(product, "User specified product ID"); - module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override"); diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 6dd79253205d..1b8af461b522 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -815,11 +815,35 @@ /* * RT Systems programming cables for various ham radios */ -#define RTSYSTEMS_VID 0x2100 /* Vendor ID */ -#define RTSYSTEMS_SERIAL_VX7_PID 0x9e52 /* Serial converter for VX-7 Radios using FT232RL */ -#define RTSYSTEMS_CT29B_PID 0x9e54 /* CT29B Radio Cable */ -#define RTSYSTEMS_RTS01_PID 0x9e57 /* USB-RTS01 Radio Cable */ - +#define RTSYSTEMS_VID 0x2100 /* Vendor ID */ +#define RTSYSTEMS_USB_S03_PID 0x9001 /* RTS-03 USB to Serial Adapter */ +#define RTSYSTEMS_USB_59_PID 0x9e50 /* USB-59 USB to 8 pin plug */ +#define RTSYSTEMS_USB_57A_PID 0x9e51 /* USB-57A USB to 4pin 3.5mm plug */ +#define RTSYSTEMS_USB_57B_PID 0x9e52 /* USB-57B USB to extended 4pin 3.5mm plug */ +#define RTSYSTEMS_USB_29A_PID 0x9e53 /* USB-29A USB to 3.5mm stereo plug */ +#define RTSYSTEMS_USB_29B_PID 0x9e54 /* USB-29B USB to 6 pin mini din */ +#define RTSYSTEMS_USB_29F_PID 0x9e55 /* USB-29F USB to 6 pin modular plug */ +#define RTSYSTEMS_USB_62B_PID 0x9e56 /* USB-62B USB to 8 pin mini din plug*/ +#define RTSYSTEMS_USB_S01_PID 0x9e57 /* USB-RTS01 USB to 3.5 mm stereo plug*/ +#define RTSYSTEMS_USB_63_PID 0x9e58 /* USB-63 USB to 9 pin female*/ +#define RTSYSTEMS_USB_29C_PID 0x9e59 /* USB-29C USB to 4 pin modular plug*/ +#define RTSYSTEMS_USB_81B_PID 0x9e5A /* USB-81 USB to 8 pin mini din plug*/ +#define RTSYSTEMS_USB_82B_PID 0x9e5B /* USB-82 USB to 2.5 mm stereo plug*/ +#define RTSYSTEMS_USB_K5D_PID 0x9e5C /* USB-K5D USB to 8 pin modular plug*/ +#define RTSYSTEMS_USB_K4Y_PID 0x9e5D /* USB-K4Y USB to 2.5/3.5 mm plugs*/ +#define RTSYSTEMS_USB_K5G_PID 0x9e5E /* USB-K5G USB to 8 pin modular plug*/ +#define RTSYSTEMS_USB_S05_PID 0x9e5F /* USB-RTS05 USB to 2.5 mm stereo plug*/ +#define RTSYSTEMS_USB_60_PID 0x9e60 /* USB-60 USB to 6 pin din*/ +#define RTSYSTEMS_USB_61_PID 0x9e61 /* USB-61 USB to 6 pin mini din*/ +#define RTSYSTEMS_USB_62_PID 0x9e62 /* USB-62 USB to 8 pin mini din*/ +#define RTSYSTEMS_USB_63B_PID 0x9e63 /* USB-63 USB to 9 pin female*/ +#define RTSYSTEMS_USB_64_PID 0x9e64 /* USB-64 USB to 9 pin male*/ +#define RTSYSTEMS_USB_65_PID 0x9e65 /* USB-65 USB to 9 pin female null modem*/ +#define RTSYSTEMS_USB_92_PID 0x9e66 /* USB-92 USB to 12 pin plug*/ +#define RTSYSTEMS_USB_92D_PID 0x9e67 /* USB-92D USB to 12 pin plug data*/ +#define RTSYSTEMS_USB_W5R_PID 0x9e68 /* USB-W5R USB to 8 pin modular plug*/ +#define RTSYSTEMS_USB_A5R_PID 0x9e69 /* USB-A5R USB to 8 pin modular plug*/ +#define RTSYSTEMS_USB_PW1_PID 0x9e6A /* USB-PW1 USB to 8 pin modular plug*/ /* * Physik Instrumente diff --git a/drivers/usb/serial/funsoft.c b/drivers/usb/serial/funsoft.c deleted file mode 100644 index 9362f8fd2385..000000000000 --- a/drivers/usb/serial/funsoft.c +++ /dev/null @@ -1,40 +0,0 @@ -/* - * Funsoft Serial USB driver - * - * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/tty.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <linux/usb/serial.h> -#include <linux/uaccess.h> - -static const struct usb_device_id id_table[] = { - { USB_DEVICE(0x1404, 0xcddc) }, - { }, -}; -MODULE_DEVICE_TABLE(usb, id_table); - -static struct usb_serial_driver funsoft_device = { - .driver = { - .owner = THIS_MODULE, - .name = "funsoft", - }, - .id_table = id_table, - .num_ports = 1, -}; - -static struct usb_serial_driver * const serial_drivers[] = { - &funsoft_device, NULL -}; - -module_usb_serial_driver(serial_drivers, id_table); - -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c index b110c573ea85..04b5ed90ffb2 100644 --- a/drivers/usb/serial/garmin_gps.c +++ b/drivers/usb/serial/garmin_gps.c @@ -948,9 +948,9 @@ static void garmin_close(struct usb_serial_port *port) { struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); - dev_dbg(&port->dev, "%s - port %d - mode=%d state=%d flags=0x%X\n", - __func__, port->number, garmin_data_p->mode, - garmin_data_p->state, garmin_data_p->flags); + dev_dbg(&port->dev, "%s - mode=%d state=%d flags=0x%X\n", + __func__, garmin_data_p->mode, garmin_data_p->state, + garmin_data_p->flags); garmin_clear(garmin_data_p); diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index ba45170c78e5..1f31e6b4c251 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -460,12 +460,7 @@ static bool usb_serial_generic_msr_changed(struct tty_struct *tty, /* * Use tty-port initialised flag to detect all hangups including the * one generated at USB-device disconnect. - * - * FIXME: Remove hupping check once tty_port_hangup calls shutdown - * (which clears the initialised flag) before wake up. */ - if (test_bit(TTY_HUPPING, &tty->flags)) - return true; if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags)) return true; @@ -496,12 +491,8 @@ int usb_serial_generic_tiocmiwait(struct tty_struct *tty, unsigned long arg) ret = wait_event_interruptible(port->port.delta_msr_wait, usb_serial_generic_msr_changed(tty, arg, &cnow)); - if (!ret) { - if (test_bit(TTY_HUPPING, &tty->flags)) - ret = -EIO; - if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags)) - ret = -EIO; - } + if (!ret && !test_bit(ASYNCB_INITIALIZED, &port->port.flags)) + ret = -EIO; return ret; } diff --git a/drivers/usb/serial/hp4x.c b/drivers/usb/serial/hp4x.c deleted file mode 100644 index 2cba60d90c79..000000000000 --- a/drivers/usb/serial/hp4x.c +++ /dev/null @@ -1,51 +0,0 @@ -/* - * HP4x Calculators Serial USB driver - * - * Copyright (C) 2005 Arthur Huillet (ahuillet@users.sf.net) - * Copyright (C) 2001-2005 Greg Kroah-Hartman (greg@kroah.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * See Documentation/usb/usb-serial.txt for more information on using this - * driver - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/tty.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <linux/usb/serial.h> - -#define DRIVER_DESC "HP4x (48/49) Generic Serial driver" - -#define HP_VENDOR_ID 0x03f0 -#define HP49GP_PRODUCT_ID 0x0121 - -static const struct usb_device_id id_table[] = { - { USB_DEVICE(HP_VENDOR_ID, HP49GP_PRODUCT_ID) }, - { } /* Terminating entry */ -}; - -MODULE_DEVICE_TABLE(usb, id_table); - -static struct usb_serial_driver hp49gp_device = { - .driver = { - .owner = THIS_MODULE, - .name = "hp4X", - }, - .id_table = id_table, - .num_ports = 1, -}; - -static struct usb_serial_driver * const serial_drivers[] = { - &hp49gp_device, NULL -}; - -module_usb_serial_driver(serial_drivers, id_table); - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index 1477e8593476..c91481d74a14 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -56,9 +56,7 @@ #define MAX_NAME_LEN 64 -#define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ -#define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ /* receive port state */ enum RXSTATE { @@ -915,8 +913,8 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) return -ENOMEM; } - dev_dbg(dev, "%s(%d) - Initialize TX fifo to %d bytes\n", - __func__, port->number, edge_port->maxTxCredits); + dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", + __func__, edge_port->maxTxCredits); return 0; } @@ -1122,9 +1120,8 @@ static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, copySize = min((unsigned int)count, (edge_port->txCredits - fifo->count)); - dev_dbg(&port->dev, "%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes\n", - __func__, port->number, count, - edge_port->txCredits - fifo->count, copySize); + dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", + __func__, count, edge_port->txCredits - fifo->count, copySize); /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */ @@ -1216,9 +1213,8 @@ static void send_more_port_data(struct edgeport_serial *edge_serial, if (edge_port->write_in_progress || !edge_port->open || (fifo->count == 0)) { - dev_dbg(dev, "%s(%d) EXIT - fifo %d, PendingWrite = %d\n", - __func__, edge_port->port->number, - fifo->count, edge_port->write_in_progress); + dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", + __func__, fifo->count, edge_port->write_in_progress); goto exit_send; } @@ -1230,9 +1226,8 @@ static void send_more_port_data(struct edgeport_serial *edge_serial, * it's better to wait for more credits so we can do a larger write. */ if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { - dev_dbg(dev, "%s(%d) Not enough credit - fifo %d TxCredit %d\n", - __func__, edge_port->port->number, fifo->count, - edge_port->txCredits); + dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", + __func__, fifo->count, edge_port->txCredits); goto exit_send; } @@ -1256,10 +1251,8 @@ static void send_more_port_data(struct edgeport_serial *edge_serial, edge_port->write_in_progress = false; goto exit_send; } - buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number - - edge_port->port->serial->minor, count); - buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number - - edge_port->port->serial->minor, count); + buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); + buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); /* now copy our data */ bytesleft = fifo->size - fifo->tail; @@ -1377,8 +1370,7 @@ static int edge_chars_in_buffer(struct tty_struct *tty) edge_port->txfifo.count; spin_unlock_irqrestore(&edge_port->ep_lock, flags); if (num_chars) { - dev_dbg(&port->dev, "%s(port %d) - returns %d\n", __func__, - port->number, num_chars); + dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars); } return num_chars; @@ -1575,8 +1567,8 @@ static int get_serial_info(struct edgeport_port *edge_port, memset(&tmp, 0, sizeof(tmp)); tmp.type = PORT_16550A; - tmp.line = edge_port->port->serial->minor; - tmp.port = edge_port->port->number; + tmp.line = edge_port->port->minor; + tmp.port = edge_port->port->port_number; tmp.irq = 0; tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; tmp.xmit_fifo_size = edge_port->maxTxCredits; @@ -1601,15 +1593,15 @@ static int edge_ioctl(struct tty_struct *tty, DEFINE_WAIT(wait); struct edgeport_port *edge_port = usb_get_serial_port_data(port); - dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); + dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); switch (cmd) { case TIOCSERGETLSR: - dev_dbg(&port->dev, "%s (%d) TIOCSERGETLSR\n", __func__, port->number); + dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); return get_lsr_info(edge_port, (unsigned int __user *) arg); case TIOCGSERIAL: - dev_dbg(&port->dev, "%s (%d) TIOCGSERIAL\n", __func__, port->number); + dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); return get_serial_info(edge_port, (struct serial_struct __user *) arg); } return -ENOIOCTLCMD; @@ -2181,9 +2173,8 @@ static int send_iosp_ext_cmd(struct edgeport_port *edge_port, currentCommand = buffer; - MAKE_CMD_EXT_CMD(¤tCommand, &length, - edge_port->port->number - edge_port->port->serial->minor, - command, param); + MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, + command, param); status = write_cmd_usb(edge_port, buffer, length); if (status) { @@ -2266,18 +2257,16 @@ static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, int cmdLen = 0; int divisor; int status; - unsigned char number = - edge_port->port->number - edge_port->port->serial->minor; + u32 number = edge_port->port->port_number; if (edge_serial->is_epic && !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { - dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d\n", - edge_port->port->number, baudRate); + dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", + baudRate); return 0; } - dev_dbg(dev, "%s - port = %d, baud = %d\n", __func__, - edge_port->port->number, baudRate); + dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); status = calc_baud_rate_divisor(dev, baudRate, &divisor); if (status) { @@ -2388,9 +2377,8 @@ static int send_cmd_write_uart_register(struct edgeport_port *edge_port, currCmd = cmdBuffer; /* Build a cmd in the buffer to write the given register */ - MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, - edge_port->port->number - edge_port->port->serial->minor, - regNum, regValue); + MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, + regNum, regValue); status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); if (status) { @@ -2424,8 +2412,6 @@ static void change_port_settings(struct tty_struct *tty, __u8 txFlow; int status; - dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); - if (!edge_port->open && !edge_port->openPending) { dev_dbg(dev, "%s - port not opened\n", __func__); diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 1be6ba7bee27..b7187bf32469 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -64,8 +64,6 @@ #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ -#define EDGE_OUT_BUF_SIZE 1024 - /* Product information read from the Edgeport */ struct product_info { @@ -93,7 +91,6 @@ struct edgeport_port { spinlock_t ep_lock; int ep_read_urb_state; int ep_write_urb_in_use; - struct kfifo write_fifo; }; struct edgeport_serial { @@ -259,7 +256,7 @@ static int send_cmd(struct usb_device *dev, __u8 command, /* clear tx/rx buffers and fifo in TI UMP */ static int purge_port(struct usb_serial_port *port, __u16 mask) { - int port_number = port->number - port->serial->minor; + int port_number = port->port_number; dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); @@ -1392,7 +1389,8 @@ stayinbootmode: static int ti_do_config(struct edgeport_port *port, int feature, int on) { - int port_number = port->port->number - port->port->serial->minor; + int port_number = port->port->port_number; + on = !!on; /* 1 or 0 not bitmask */ return send_cmd(port->port->serial->dev, feature, (__u8)(UMPM_UART1_PORT + port_number), @@ -1637,7 +1635,7 @@ static void edge_bulk_in_callback(struct urb *urb) return; } - port_number = edge_port->port->number - edge_port->port->serial->minor; + port_number = edge_port->port->port_number; if (edge_port->lsr_event) { edge_port->lsr_event = 0; @@ -1730,23 +1728,7 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) if (edge_port == NULL) return -ENODEV; - port_number = port->number - port->serial->minor; - switch (port_number) { - case 0: - edge_port->uart_base = UMPMEM_BASE_UART1; - edge_port->dma_address = UMPD_OEDB1_ADDRESS; - break; - case 1: - edge_port->uart_base = UMPMEM_BASE_UART2; - edge_port->dma_address = UMPD_OEDB2_ADDRESS; - break; - default: - dev_err(&port->dev, "Unknown port number!!!\n"); - return -ENODEV; - } - - dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", - __func__, port_number, edge_port->uart_base, edge_port->dma_address); + port_number = port->port_number; dev = port->serial->dev; @@ -1871,8 +1853,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) ++edge_serial->num_ports_open; - port->port.drain_delay = 1; - goto release_es_lock; unlink_int_urb: @@ -1904,11 +1884,11 @@ static void edge_close(struct usb_serial_port *port) usb_kill_urb(port->write_urb); edge_port->ep_write_urb_in_use = 0; spin_lock_irqsave(&edge_port->ep_lock, flags); - kfifo_reset_out(&edge_port->write_fifo); + kfifo_reset_out(&port->write_fifo); spin_unlock_irqrestore(&edge_port->ep_lock, flags); dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); - port_number = port->number - port->serial->minor; + port_number = port->port_number; send_cmd(serial->dev, UMPC_CLOSE_PORT, (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); @@ -1938,7 +1918,7 @@ static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, if (edge_port->close_pending == 1) return -ENODEV; - count = kfifo_in_locked(&edge_port->write_fifo, data, count, + count = kfifo_in_locked(&port->write_fifo, data, count, &edge_port->ep_lock); edge_send(port, tty); @@ -1958,7 +1938,7 @@ static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) return; } - count = kfifo_out(&edge_port->write_fifo, + count = kfifo_out(&port->write_fifo, port->write_urb->transfer_buffer, port->bulk_out_size); @@ -2006,7 +1986,7 @@ static int edge_write_room(struct tty_struct *tty) return 0; spin_lock_irqsave(&edge_port->ep_lock, flags); - room = kfifo_avail(&edge_port->write_fifo); + room = kfifo_avail(&port->write_fifo); spin_unlock_irqrestore(&edge_port->ep_lock, flags); dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); @@ -2023,7 +2003,7 @@ static int edge_chars_in_buffer(struct tty_struct *tty) return 0; spin_lock_irqsave(&edge_port->ep_lock, flags); - chars = kfifo_len(&edge_port->write_fifo); + chars = kfifo_len(&port->write_fifo); spin_unlock_irqrestore(&edge_port->ep_lock, flags); dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); @@ -2137,10 +2117,7 @@ static void change_port_settings(struct tty_struct *tty, int baud; unsigned cflag; int status; - int port_number = edge_port->port->number - - edge_port->port->serial->minor; - - dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); + int port_number = edge_port->port->port_number; config = kmalloc (sizeof (*config), GFP_KERNEL); if (!config) { @@ -2284,7 +2261,6 @@ static void edge_set_termios(struct tty_struct *tty, tty->termios.c_cflag, tty->termios.c_iflag); dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag); - dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); if (edge_port == NULL) return; @@ -2366,8 +2342,8 @@ static int get_serial_info(struct edgeport_port *edge_port, memset(&tmp, 0, sizeof(tmp)); tmp.type = PORT_16550A; - tmp.line = edge_port->port->serial->minor; - tmp.port = edge_port->port->number; + tmp.line = edge_port->port->minor; + tmp.port = edge_port->port->port_number; tmp.irq = 0; tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; tmp.xmit_fifo_size = edge_port->port->bulk_out_size; @@ -2386,7 +2362,7 @@ static int edge_ioctl(struct tty_struct *tty, struct usb_serial_port *port = tty->driver_data; struct edgeport_port *edge_port = usb_get_serial_port_data(port); - dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); + dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); switch (cmd) { case TIOCGSERIAL: @@ -2454,30 +2430,45 @@ static int edge_port_probe(struct usb_serial_port *port) if (!edge_port) return -ENOMEM; - ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, - GFP_KERNEL); - if (ret) { - kfree(edge_port); - return -ENOMEM; - } - spin_lock_init(&edge_port->ep_lock); edge_port->port = port; edge_port->edge_serial = usb_get_serial_data(port->serial); edge_port->bUartMode = default_uart_mode; + switch (port->port_number) { + case 0: + edge_port->uart_base = UMPMEM_BASE_UART1; + edge_port->dma_address = UMPD_OEDB1_ADDRESS; + break; + case 1: + edge_port->uart_base = UMPMEM_BASE_UART2; + edge_port->dma_address = UMPD_OEDB2_ADDRESS; + break; + default: + dev_err(&port->dev, "unknown port number\n"); + ret = -ENODEV; + goto err; + } + + dev_dbg(&port->dev, + "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", + __func__, port->port_number, edge_port->uart_base, + edge_port->dma_address); + usb_set_serial_port_data(port, edge_port); ret = edge_create_sysfs_attrs(port); - if (ret) { - kfifo_free(&edge_port->write_fifo); - kfree(edge_port); - return ret; - } + if (ret) + goto err; port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); + port->port.drain_delay = 1; return 0; +err: + kfree(edge_port); + + return ret; } static int edge_port_remove(struct usb_serial_port *port) @@ -2486,7 +2477,6 @@ static int edge_port_remove(struct usb_serial_port *port) edge_port = usb_get_serial_port_data(port); edge_remove_sysfs_attrs(port); - kfifo_free(&edge_port->write_fifo); kfree(edge_port); return 0; @@ -2494,7 +2484,7 @@ static int edge_port_remove(struct usb_serial_port *port) /* Sysfs Attributes */ -static ssize_t show_uart_mode(struct device *dev, +static ssize_t uart_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_serial_port *port = to_usb_serial_port(dev); @@ -2503,7 +2493,7 @@ static ssize_t show_uart_mode(struct device *dev, return sprintf(buf, "%d\n", edge_port->bUartMode); } -static ssize_t store_uart_mode(struct device *dev, +static ssize_t uart_mode_store(struct device *dev, struct device_attribute *attr, const char *valbuf, size_t count) { struct usb_serial_port *port = to_usb_serial_port(dev); @@ -2519,9 +2509,7 @@ static ssize_t store_uart_mode(struct device *dev, return count; } - -static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, - store_uart_mode); +static DEVICE_ATTR_RW(uart_mode); static int edge_create_sysfs_attrs(struct usb_serial_port *port) { diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 9d74c278b7b5..57c439a24b5a 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -287,7 +287,7 @@ static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count) usb_bulk_msg(serial->dev, usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), buf, - count, &actual, HZ * 1); + count, &actual, 1000); if (status != IUU_OPERATION_OK) dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); @@ -307,7 +307,7 @@ static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count) usb_bulk_msg(serial->dev, usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), buf, - count, &actual, HZ * 1); + count, &actual, 1000); if (status != IUU_OPERATION_OK) dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); @@ -1130,7 +1130,7 @@ static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc) * Sysfs Attributes */ -static ssize_t show_vcc_mode(struct device *dev, +static ssize_t vcc_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_serial_port *port = to_usb_serial_port(dev); @@ -1139,7 +1139,7 @@ static ssize_t show_vcc_mode(struct device *dev, return sprintf(buf, "%d\n", priv->vcc); } -static ssize_t store_vcc_mode(struct device *dev, +static ssize_t vcc_mode_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct usb_serial_port *port = to_usb_serial_port(dev); @@ -1163,9 +1163,7 @@ static ssize_t store_vcc_mode(struct device *dev, fail_store_vcc_mode: return count; } - -static DEVICE_ATTR(vcc_mode, S_IRUSR | S_IWUSR, show_vcc_mode, - store_vcc_mode); +static DEVICE_ATTR_RW(vcc_mode); static int iuu_create_sysfs_attrs(struct usb_serial_port *port) { diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index eb30d7b01f36..d6960aebe246 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -50,23 +50,27 @@ #define INSTAT_BUFLEN 32 #define GLOCONT_BUFLEN 64 #define INDAT49W_BUFLEN 512 +#define IN_BUFLEN 64 +#define OUT_BUFLEN 64 +#define INACK_BUFLEN 1 +#define OUTCONT_BUFLEN 64 /* Per device and per port private data */ struct keyspan_serial_private { const struct keyspan_device_details *device_details; struct urb *instat_urb; - char instat_buf[INSTAT_BUFLEN]; + char *instat_buf; /* added to support 49wg, where data from all 4 ports comes in on 1 EP and high-speed supported */ struct urb *indat_urb; - char indat_buf[INDAT49W_BUFLEN]; + char *indat_buf; /* XXX this one probably will need a lock */ struct urb *glocont_urb; - char glocont_buf[GLOCONT_BUFLEN]; - char ctrl_buf[8]; /* for EP0 control message */ + char *glocont_buf; + char *ctrl_buf; /* for EP0 control message */ }; struct keyspan_port_private { @@ -81,18 +85,18 @@ struct keyspan_port_private { /* Input endpoints and buffer for this port */ struct urb *in_urbs[2]; - char in_buffer[2][64]; + char *in_buffer[2]; /* Output endpoints and buffer for this port */ struct urb *out_urbs[2]; - char out_buffer[2][64]; + char *out_buffer[2]; /* Input ack endpoint */ struct urb *inack_urb; - char inack_buffer[1]; + char *inack_buffer; /* Output control endpoint */ struct urb *outcont_urb; - char outcont_buffer[64]; + char *outcont_buffer; /* Settings for the port */ int baud; @@ -152,7 +156,7 @@ static void keyspan_set_termios(struct tty_struct *tty, p_priv = usb_get_serial_port_data(port); d_details = p_priv->device_details; cflag = tty->termios.c_cflag; - device_port = port->number - port->serial->minor; + device_port = port->port_number; /* Baud rate calculation takes baud rate as an integer so other rates can be generated if desired. */ @@ -234,8 +238,8 @@ static int keyspan_write(struct tty_struct *tty, dataOffset = 1; } - dev_dbg(&port->dev, "%s - for port %d (%d chars), flip=%d\n", - __func__, port->number, count, p_priv->out_flip); + dev_dbg(&port->dev, "%s - %d chars, flip=%d\n", __func__, count, + p_priv->out_flip); for (left = count; left > 0; left -= todo) { todo = left; @@ -520,12 +524,7 @@ static void usa28_instat_callback(struct urb *urb) goto exit; } - /* - dev_dbg(&urb->dev->dev, - "%s %x %x %x %x %x %x %x %x %x %x %x %x", __func__, - data[0], data[1], data[2], data[3], data[4], data[5], - data[6], data[7], data[8], data[9], data[10], data[11]); - */ + /*dev_dbg(&urb->dev->dev, "%s %12ph", __func__, data);*/ /* Now do something useful with the data */ msg = (struct keyspan_usa28_portStatusMessage *)data; @@ -607,11 +606,7 @@ static void usa49_instat_callback(struct urb *urb) goto exit; } - /* - dev_dbg(&urb->dev->dev, "%s: %x %x %x %x %x %x %x %x %x %x %x", - __func__, data[0], data[1], data[2], data[3], data[4], - data[5], data[6], data[7], data[8], data[9], data[10]); - */ + /*dev_dbg(&urb->dev->dev, "%s: %11ph", __func__, data);*/ /* Now do something useful with the data */ msg = (struct keyspan_usa49_portStatusMessage *)data; @@ -1050,7 +1045,7 @@ static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port) /* get the terminal config for the setup message now so we don't * need to send 2 of them */ - device_port = port->number - port->serial->minor; + device_port = port->port_number; if (tty) { cflag = tty->termios.c_cflag; /* Baud rate calculation takes baud rate as an integer @@ -1548,7 +1543,6 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial, struct keyspan_serial_private *s_priv; struct keyspan_port_private *p_priv; const struct keyspan_device_details *d_details; - int outcont_urb; struct urb *this_urb; int device_port, err; @@ -1557,9 +1551,8 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial, s_priv = usb_get_serial_data(serial); p_priv = usb_get_serial_port_data(port); d_details = s_priv->device_details; - device_port = port->number - port->serial->minor; + device_port = port->port_number; - outcont_urb = d_details->outcont_endpoints[port->number]; this_urb = p_priv->outcont_urb; dev_dbg(&port->dev, "%s - endpoint %d\n", __func__, usb_pipeendpoint(this_urb->pipe)); @@ -1685,14 +1678,6 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial, err = usb_submit_urb(this_urb, GFP_ATOMIC); if (err != 0) dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err); -#if 0 - else { - dev_dbg(&port->dev, "%s - usb_submit_urb(%d) OK %d bytes (end %d)\n", __func__ - outcont_urb, this_urb->transfer_buffer_length, - usb_pipeendpoint(this_urb->pipe)); - } -#endif - return 0; } @@ -1710,7 +1695,7 @@ static int keyspan_usa28_send_setup(struct usb_serial *serial, s_priv = usb_get_serial_data(serial); p_priv = usb_get_serial_port_data(port); d_details = s_priv->device_details; - device_port = port->number - port->serial->minor; + device_port = port->port_number; /* only do something if we have a bulk out endpoint */ this_urb = p_priv->outcont_urb; @@ -1840,17 +1825,16 @@ static int keyspan_usa49_send_setup(struct usb_serial *serial, this_urb = s_priv->glocont_urb; /* Work out which port within the device is being setup */ - device_port = port->number - port->serial->minor; + device_port = port->port_number; /* Make sure we have an urb then send the message */ if (this_urb == NULL) { - dev_dbg(&port->dev, "%s - oops no urb for port %d.\n", __func__, port->number); + dev_dbg(&port->dev, "%s - oops no urb for port.\n", __func__); return -1; } - dev_dbg(&port->dev, "%s - endpoint %d port %d (%d)\n", - __func__, usb_pipeendpoint(this_urb->pipe), - port->number, device_port); + dev_dbg(&port->dev, "%s - endpoint %d (%d)\n", + __func__, usb_pipeendpoint(this_urb->pipe), device_port); /* Save reset port val for resend. Don't overwrite resend for open/close condition. */ @@ -1865,7 +1849,6 @@ static int keyspan_usa49_send_setup(struct usb_serial *serial, memset(&msg, 0, sizeof(struct keyspan_usa49_portControlMessage)); - /*msg.portNumber = port->number;*/ msg.portNumber = device_port; /* Only set baud rate if it's changed */ @@ -2155,12 +2138,11 @@ static int keyspan_usa67_send_setup(struct usb_serial *serial, this_urb = s_priv->glocont_urb; /* Work out which port within the device is being setup */ - device_port = port->number - port->serial->minor; + device_port = port->port_number; /* Make sure we have an urb then send the message */ if (this_urb == NULL) { - dev_dbg(&port->dev, "%s - oops no urb for port %d.\n", __func__, - port->number); + dev_dbg(&port->dev, "%s - oops no urb for port.\n", __func__); return -1; } @@ -2325,7 +2307,7 @@ static int keyspan_startup(struct usb_serial *serial) if (d_details == NULL) { dev_err(&serial->dev->dev, "%s - unknown product id %x\n", __func__, le16_to_cpu(serial->dev->descriptor.idProduct)); - return 1; + return -ENODEV; } /* Setup private data for serial driver */ @@ -2335,6 +2317,22 @@ static int keyspan_startup(struct usb_serial *serial) return -ENOMEM; } + s_priv->instat_buf = kzalloc(INSTAT_BUFLEN, GFP_KERNEL); + if (!s_priv->instat_buf) + goto err_instat_buf; + + s_priv->indat_buf = kzalloc(INDAT49W_BUFLEN, GFP_KERNEL); + if (!s_priv->indat_buf) + goto err_indat_buf; + + s_priv->glocont_buf = kzalloc(GLOCONT_BUFLEN, GFP_KERNEL); + if (!s_priv->glocont_buf) + goto err_glocont_buf; + + s_priv->ctrl_buf = kzalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); + if (!s_priv->ctrl_buf) + goto err_ctrl_buf; + s_priv->device_details = d_details; usb_set_serial_data(serial, s_priv); @@ -2352,6 +2350,17 @@ static int keyspan_startup(struct usb_serial *serial) } return 0; + +err_ctrl_buf: + kfree(s_priv->glocont_buf); +err_glocont_buf: + kfree(s_priv->indat_buf); +err_indat_buf: + kfree(s_priv->instat_buf); +err_instat_buf: + kfree(s_priv); + + return -ENOMEM; } static void keyspan_disconnect(struct usb_serial *serial) @@ -2375,6 +2384,11 @@ static void keyspan_release(struct usb_serial *serial) usb_free_urb(s_priv->indat_urb); usb_free_urb(s_priv->glocont_urb); + kfree(s_priv->ctrl_buf); + kfree(s_priv->glocont_buf); + kfree(s_priv->indat_buf); + kfree(s_priv->instat_buf); + kfree(s_priv); } @@ -2396,19 +2410,40 @@ static int keyspan_port_probe(struct usb_serial_port *port) if (!p_priv) return -ENOMEM; + for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i) { + p_priv->in_buffer[i] = kzalloc(IN_BUFLEN, GFP_KERNEL); + if (!p_priv->in_buffer[i]) + goto err_in_buffer; + } + + for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i) { + p_priv->out_buffer[i] = kzalloc(OUT_BUFLEN, GFP_KERNEL); + if (!p_priv->out_buffer[i]) + goto err_out_buffer; + } + + p_priv->inack_buffer = kzalloc(INACK_BUFLEN, GFP_KERNEL); + if (!p_priv->inack_buffer) + goto err_inack_buffer; + + p_priv->outcont_buffer = kzalloc(OUTCONT_BUFLEN, GFP_KERNEL); + if (!p_priv->outcont_buffer) + goto err_outcont_buffer; + p_priv->device_details = d_details; /* Setup values for the various callback routines */ cback = &keyspan_callbacks[d_details->msg_format]; - port_num = port->number - port->serial->minor; + port_num = port->port_number; /* Do indat endpoints first, once for each flip */ endp = d_details->indat_endpoints[port_num]; for (i = 0; i <= d_details->indat_endp_flip; ++i, ++endp) { p_priv->in_urbs[i] = keyspan_setup_urb(serial, endp, USB_DIR_IN, port, - p_priv->in_buffer[i], 64, + p_priv->in_buffer[i], + IN_BUFLEN, cback->indat_callback); } /* outdat endpoints also have flip */ @@ -2416,25 +2451,41 @@ static int keyspan_port_probe(struct usb_serial_port *port) for (i = 0; i <= d_details->outdat_endp_flip; ++i, ++endp) { p_priv->out_urbs[i] = keyspan_setup_urb(serial, endp, USB_DIR_OUT, port, - p_priv->out_buffer[i], 64, + p_priv->out_buffer[i], + OUT_BUFLEN, cback->outdat_callback); } /* inack endpoint */ p_priv->inack_urb = keyspan_setup_urb(serial, d_details->inack_endpoints[port_num], USB_DIR_IN, port, - p_priv->inack_buffer, 1, + p_priv->inack_buffer, + INACK_BUFLEN, cback->inack_callback); /* outcont endpoint */ p_priv->outcont_urb = keyspan_setup_urb(serial, d_details->outcont_endpoints[port_num], USB_DIR_OUT, port, - p_priv->outcont_buffer, 64, + p_priv->outcont_buffer, + OUTCONT_BUFLEN, cback->outcont_callback); usb_set_serial_port_data(port, p_priv); return 0; + +err_outcont_buffer: + kfree(p_priv->inack_buffer); +err_inack_buffer: + for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i) + kfree(p_priv->out_buffer[i]); +err_out_buffer: + for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i) + kfree(p_priv->in_buffer[i]); +err_in_buffer: + kfree(p_priv); + + return -ENOMEM; } static int keyspan_port_remove(struct usb_serial_port *port) @@ -2458,6 +2509,13 @@ static int keyspan_port_remove(struct usb_serial_port *port) usb_free_urb(p_priv->out_urbs[i]); } + kfree(p_priv->outcont_buffer); + kfree(p_priv->inack_buffer); + for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i) + kfree(p_priv->out_buffer[i]); + for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i) + kfree(p_priv->in_buffer[i]); + kfree(p_priv); return 0; diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c index 47e247759eb0..40ccf6e5e318 100644 --- a/drivers/usb/serial/metro-usb.c +++ b/drivers/usb/serial/metro-usb.c @@ -224,8 +224,8 @@ static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port) result = metrousb_send_unidirectional_cmd(UNI_CMD_OPEN, port); if (result) { dev_err(&port->dev, - "%s - failed to configure device for port number=%d, error code=%d\n", - __func__, port->number, result); + "%s - failed to configure device, error code=%d\n", + __func__, result); goto exit; } diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index cc0e54345df9..84657e07dc5d 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -40,7 +40,7 @@ #define DRIVER_DESC "Moschip USB Serial Driver" /* default urb timeout */ -#define MOS_WDR_TIMEOUT (HZ * 5) +#define MOS_WDR_TIMEOUT 5000 #define MOS_MAX_PORT 0x02 #define MOS_WRITE 0x0E @@ -90,6 +90,7 @@ struct urbtracker { struct list_head urblist_entry; struct kref ref_count; struct urb *urb; + struct usb_ctrlrequest *setup; }; enum mos7715_pp_modes { @@ -227,11 +228,22 @@ static int read_mos_reg(struct usb_serial *serial, unsigned int serial_portnum, __u8 requesttype = (__u8)0xc0; __u16 index = get_reg_index(reg); __u16 value = get_reg_value(reg, serial_portnum); - int status = usb_control_msg(usbdev, pipe, request, requesttype, value, - index, data, 1, MOS_WDR_TIMEOUT); - if (status < 0) + u8 *buf; + int status; + + buf = kmalloc(1, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + status = usb_control_msg(usbdev, pipe, request, requesttype, value, + index, buf, 1, MOS_WDR_TIMEOUT); + if (status == 1) + *data = *buf; + else if (status < 0) dev_err(&usbdev->dev, "mos7720: usb_control_msg() failed: %d", status); + kfree(buf); + return status; } @@ -260,6 +272,7 @@ static void destroy_urbtracker(struct kref *kref) struct mos7715_parport *mos_parport = urbtrack->mos_parport; usb_free_urb(urbtrack->urb); + kfree(urbtrack->setup); kfree(urbtrack); kref_put(&mos_parport->ref_count, destroy_mos_parport); } @@ -344,7 +357,6 @@ static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport, struct urbtracker *urbtrack; int ret_val; unsigned long flags; - struct usb_ctrlrequest setup; struct usb_serial *serial = mos_parport->serial; struct usb_device *usbdev = serial->dev; @@ -362,14 +374,20 @@ static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport, kfree(urbtrack); return -ENOMEM; } - setup.bRequestType = (__u8)0x40; - setup.bRequest = (__u8)0x0e; - setup.wValue = get_reg_value(reg, dummy); - setup.wIndex = get_reg_index(reg); - setup.wLength = 0; + urbtrack->setup = kmalloc(sizeof(*urbtrack->setup), GFP_ATOMIC); + if (!urbtrack->setup) { + usb_free_urb(urbtrack->urb); + kfree(urbtrack); + return -ENOMEM; + } + urbtrack->setup->bRequestType = (__u8)0x40; + urbtrack->setup->bRequest = (__u8)0x0e; + urbtrack->setup->wValue = cpu_to_le16(get_reg_value(reg, dummy)); + urbtrack->setup->wIndex = cpu_to_le16(get_reg_index(reg)); + urbtrack->setup->wLength = 0; usb_fill_control_urb(urbtrack->urb, usbdev, usb_sndctrlpipe(usbdev, 0), - (unsigned char *)&setup, + (unsigned char *)urbtrack->setup, NULL, 0, async_complete, urbtrack); kref_init(&urbtrack->ref_count); INIT_LIST_HEAD(&urbtrack->urblist_entry); @@ -1036,7 +1054,7 @@ static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) * * 0x08 : SP1/2 Control Reg */ - port_number = port->number - port->serial->minor; + port_number = port->port_number; read_mos_reg(serial, port_number, LSR, &data); dev_dbg(&port->dev, "SS::%p LSR:%x\n", mos7720_port, data); @@ -1055,7 +1073,7 @@ static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) write_mos_reg(serial, port_number, SP_CONTROL_REG, 0x00); read_mos_reg(serial, dummy, SP_CONTROL_REG, &data); - data = data | (port->number - port->serial->minor + 1); + data = data | (port->port_number + 1); write_mos_reg(serial, dummy, SP_CONTROL_REG, data); mos7720_port->shadowLCR = 0x83; write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR); @@ -1136,8 +1154,8 @@ static void mos7720_close(struct usb_serial_port *port) usb_kill_urb(port->write_urb); usb_kill_urb(port->read_urb); - write_mos_reg(serial, port->number - port->serial->minor, MCR, 0x00); - write_mos_reg(serial, port->number - port->serial->minor, IER, 0x00); + write_mos_reg(serial, port->port_number, MCR, 0x00); + write_mos_reg(serial, port->port_number, IER, 0x00); mos7720_port->open = 0; } @@ -1161,8 +1179,7 @@ static void mos7720_break(struct tty_struct *tty, int break_state) data = mos7720_port->shadowLCR & ~UART_LCR_SBC; mos7720_port->shadowLCR = data; - write_mos_reg(serial, port->number - port->serial->minor, - LCR, mos7720_port->shadowLCR); + write_mos_reg(serial, port->port_number, LCR, mos7720_port->shadowLCR); } /* @@ -1293,8 +1310,8 @@ static void mos7720_throttle(struct tty_struct *tty) /* if we are implementing RTS/CTS, toggle that line */ if (tty->termios.c_cflag & CRTSCTS) { mos7720_port->shadowMCR &= ~UART_MCR_RTS; - write_mos_reg(port->serial, port->number - port->serial->minor, - MCR, mos7720_port->shadowMCR); + write_mos_reg(port->serial, port->port_number, MCR, + mos7720_port->shadowMCR); if (status != 0) return; } @@ -1325,8 +1342,8 @@ static void mos7720_unthrottle(struct tty_struct *tty) /* if we are implementing RTS/CTS, toggle that line */ if (tty->termios.c_cflag & CRTSCTS) { mos7720_port->shadowMCR |= UART_MCR_RTS; - write_mos_reg(port->serial, port->number - port->serial->minor, - MCR, mos7720_port->shadowMCR); + write_mos_reg(port->serial, port->port_number, MCR, + mos7720_port->shadowMCR); if (status != 0) return; } @@ -1350,7 +1367,7 @@ static int set_higher_rates(struct moschip_port *mos7720_port, * Init Sequence for higher rates ***********************************************/ dev_dbg(&port->dev, "Sending Setting Commands ..........\n"); - port_number = port->number - port->serial->minor; + port_number = port->port_number; write_mos_reg(serial, port_number, IER, 0x00); write_mos_reg(serial, port_number, FCR, 0x00); @@ -1476,7 +1493,7 @@ static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, port = mos7720_port->port; serial = port->serial; - number = port->number - port->serial->minor; + number = port->port_number; dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudrate); /* Calculate the Divisor */ @@ -1527,7 +1544,7 @@ static void change_port_settings(struct tty_struct *tty, port = mos7720_port->port; serial = port->serial; - port_number = port->number - port->serial->minor; + port_number = port->port_number; if (!mos7720_port->open) { dev_dbg(&port->dev, "%s - port not opened\n", __func__); @@ -1618,7 +1635,7 @@ static void change_port_settings(struct tty_struct *tty, mos7720_port->shadowMCR |= (UART_MCR_XONANY); /* To set hardware flow control to the specified * * serial port, in SP1/2_CONTROL_REG */ - if (port->number) + if (port_number) write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x01); else write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x02); @@ -1720,7 +1737,7 @@ static int get_lsr_info(struct tty_struct *tty, struct usb_serial_port *port = tty->driver_data; unsigned int result = 0; unsigned char data = 0; - int port_number = port->number - port->serial->minor; + int port_number = port->port_number; int count; count = mos7720_chars_in_buffer(tty); @@ -1782,8 +1799,8 @@ static int mos7720_tiocmset(struct tty_struct *tty, mcr &= ~UART_MCR_LOOP; mos7720_port->shadowMCR = mcr; - write_mos_reg(port->serial, port->number - port->serial->minor, - MCR, mos7720_port->shadowMCR); + write_mos_reg(port->serial, port->port_number, MCR, + mos7720_port->shadowMCR); return 0; } @@ -1827,8 +1844,8 @@ static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, } mos7720_port->shadowMCR = mcr; - write_mos_reg(port->serial, port->number - port->serial->minor, - MCR, mos7720_port->shadowMCR); + write_mos_reg(port->serial, port->port_number, MCR, + mos7720_port->shadowMCR); return 0; } @@ -1844,8 +1861,8 @@ static int get_serial_info(struct moschip_port *mos7720_port, memset(&tmp, 0, sizeof(tmp)); tmp.type = PORT_16550A; - tmp.line = mos7720_port->port->serial->minor; - tmp.port = mos7720_port->port->number; + tmp.line = mos7720_port->port->minor; + tmp.port = mos7720_port->port->port_number; tmp.irq = 0; tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; @@ -1927,7 +1944,7 @@ static int mos7720_startup(struct usb_serial *serial) /* setting configuration feature to one */ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5*HZ); + (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5000); /* start the interrupt urb */ ret_val = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL); @@ -1970,7 +1987,7 @@ static void mos7720_release(struct usb_serial *serial) /* wait for synchronous usb calls to return */ if (mos_parport->msg_pending) wait_for_completion_timeout(&mos_parport->syncmsg_compl, - MOS_WDR_TIMEOUT); + msecs_to_jiffies(MOS_WDR_TIMEOUT)); parport_remove_port(mos_parport->pp); usb_set_serial_data(serial, NULL); diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index a0d5ea545982..fdf953539c62 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -183,7 +183,10 @@ #define LED_ON_MS 500 #define LED_OFF_MS 500 -static int device_type; +enum mos7840_flag { + MOS7840_FLAG_CTRL_BUSY, + MOS7840_FLAG_LED_BUSY, +}; static const struct usb_device_id id_table[] = { {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, @@ -218,7 +221,6 @@ struct moschip_port { __u8 shadowMCR; /* last MCR value received */ char open; char open_ports; - wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ struct usb_serial_port *port; /* loop back to the owner of this object */ /* Offsets */ @@ -238,9 +240,12 @@ struct moschip_port { /* For device(s) with LED indicator */ bool has_led; - bool led_flag; struct timer_list led_timer1; /* Timer for LED on */ struct timer_list led_timer2; /* Timer for LED off */ + struct urb *led_urb; + struct usb_ctrlrequest *led_dr; + + unsigned long flags; }; /* @@ -303,15 +308,12 @@ static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, /* For the UART control registers, the application number need to be Or'ed */ if (port->serial->num_ports == 4) { - val |= (((__u16) port->number - - (__u16) (port->serial->minor)) + 1) << 8; + val |= ((__u16)port->port_number + 1) << 8; } else { - if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { - val |= (((__u16) port->number - - (__u16) (port->serial->minor)) + 1) << 8; + if (port->port_number == 0) { + val |= ((__u16)port->port_number + 1) << 8; } else { - val |= (((__u16) port->number - - (__u16) (port->serial->minor)) + 2) << 8; + val |= ((__u16)port->port_number + 2) << 8; } } dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); @@ -340,16 +342,12 @@ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, /* Wval is same as application number */ if (port->serial->num_ports == 4) { - Wval = - (((__u16) port->number - (__u16) (port->serial->minor)) + - 1) << 8; + Wval = ((__u16)port->port_number + 1) << 8; } else { - if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { - Wval = (((__u16) port->number - - (__u16) (port->serial->minor)) + 1) << 8; + if (port->port_number == 0) { + Wval = ((__u16)port->port_number + 1) << 8; } else { - Wval = (((__u16) port->number - - (__u16) (port->serial->minor)) + 2) << 8; + Wval = ((__u16)port->port_number + 2) << 8; } } dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); @@ -467,10 +465,10 @@ static void mos7840_control_callback(struct urb *urb) case -ESHUTDOWN: /* this urb is terminated, clean up */ dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); - return; + goto out; default: dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); - return; + goto out; } dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length); @@ -483,6 +481,8 @@ static void mos7840_control_callback(struct urb *urb) mos7840_handle_new_msr(mos7840_port, regval); else if (mos7840_port->MsrLsr == 1) mos7840_handle_new_lsr(mos7840_port, regval); +out: + clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mos7840_port->flags); } static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, @@ -493,6 +493,9 @@ static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, unsigned char *buffer = mcs->ctrl_buf; int ret; + if (test_and_set_bit_lock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags)) + return -EBUSY; + dr->bRequestType = MCS_RD_RTYPE; dr->bRequest = MCS_RDREQ; dr->wValue = cpu_to_le16(Wval); /* 0 */ @@ -504,6 +507,9 @@ static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, mos7840_control_callback, mcs); mcs->control_urb->transfer_buffer_length = 2; ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); + if (ret) + clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags); + return ret; } @@ -530,7 +536,7 @@ static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, __u16 reg) { struct usb_device *dev = mcs->port->serial->dev; - struct usb_ctrlrequest *dr = mcs->dr; + struct usb_ctrlrequest *dr = mcs->led_dr; dr->bRequestType = MCS_WR_RTYPE; dr->bRequest = MCS_WRREQ; @@ -538,10 +544,10 @@ static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, dr->wIndex = cpu_to_le16(reg); dr->wLength = cpu_to_le16(0); - usb_fill_control_urb(mcs->control_urb, dev, usb_sndctrlpipe(dev, 0), + usb_fill_control_urb(mcs->led_urb, dev, usb_sndctrlpipe(dev, 0), (unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); - usb_submit_urb(mcs->control_urb, GFP_ATOMIC); + usb_submit_urb(mcs->led_urb, GFP_ATOMIC); } static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, @@ -567,7 +573,19 @@ static void mos7840_led_flag_off(unsigned long arg) { struct moschip_port *mcs = (struct moschip_port *) arg; - mcs->led_flag = false; + clear_bit_unlock(MOS7840_FLAG_LED_BUSY, &mcs->flags); +} + +static void mos7840_led_activity(struct usb_serial_port *port) +{ + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); + + if (test_and_set_bit_lock(MOS7840_FLAG_LED_BUSY, &mos7840_port->flags)) + return; + + mos7840_set_led_async(mos7840_port, 0x0301, MODEM_CONTROL_REGISTER); + mod_timer(&mos7840_port->led_timer1, + jiffies + msecs_to_jiffies(LED_ON_MS)); } /***************************************************************************** @@ -631,9 +649,7 @@ static void mos7840_interrupt_callback(struct urb *urb) for (i = 0; i < serial->num_ports; i++) { mos7840_port = mos7840_get_port_private(serial->port[i]); - wval = - (((__u16) serial->port[i]->number - - (__u16) (serial->minor)) + 1) << 8; + wval = ((__u16)serial->port[i]->port_number + 1) << 8; if (mos7840_port->open) { if (sp[i] & 0x01) { dev_dbg(&urb->dev->dev, "SP%d No Interrupt !!!\n", i); @@ -767,14 +783,8 @@ static void mos7840_bulk_in_callback(struct urb *urb) return; } - /* Turn on LED */ - if (mos7840_port->has_led && !mos7840_port->led_flag) { - mos7840_port->led_flag = true; - mos7840_set_led_async(mos7840_port, 0x0301, - MODEM_CONTROL_REGISTER); - mod_timer(&mos7840_port->led_timer1, - jiffies + msecs_to_jiffies(LED_ON_MS)); - } + if (mos7840_port->has_led) + mos7840_led_activity(port); mos7840_port->read_urb_busy = true; retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); @@ -825,18 +835,6 @@ static void mos7840_bulk_out_data_callback(struct urb *urb) /************************************************************************/ /* D R I V E R T T Y I N T E R F A C E F U N C T I O N S */ /************************************************************************/ -#ifdef MCSSerialProbe -static int mos7840_serial_probe(struct usb_serial *serial, - const struct usb_device_id *id) -{ - - /*need to implement the mode_reg reading and updating\ - structures usb_serial_ device_type\ - (i.e num_ports, num_bulkin,bulkout etc) */ - /* Also we can update the changes attach */ - return 1; -} -#endif /***************************************************************************** * mos7840_open @@ -914,20 +912,20 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); if (status < 0) { dev_dbg(&port->dev, "Reading Spreg failed\n"); - return -1; + goto err; } Data |= 0x80; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); if (status < 0) { dev_dbg(&port->dev, "writing Spreg failed\n"); - return -1; + goto err; } Data &= ~0x80; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); if (status < 0) { dev_dbg(&port->dev, "writing Spreg failed\n"); - return -1; + goto err; } /* End of block to be checked */ @@ -936,7 +934,7 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) &Data); if (status < 0) { dev_dbg(&port->dev, "Reading Controlreg failed\n"); - return -1; + goto err; } Data |= 0x08; /* Driver done bit */ Data |= 0x20; /* rx_disable */ @@ -944,7 +942,7 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) mos7840_port->ControlRegOffset, Data); if (status < 0) { dev_dbg(&port->dev, "writing Controlreg failed\n"); - return -1; + goto err; } /* do register settings here */ /* Set all regs to the device default values. */ @@ -955,21 +953,21 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); if (status < 0) { dev_dbg(&port->dev, "disabling interrupts failed\n"); - return -1; + goto err; } /* Set FIFO_CONTROL_REGISTER to the default value */ Data = 0x00; status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); if (status < 0) { dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); - return -1; + goto err; } Data = 0xcf; status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); if (status < 0) { dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); - return -1; + goto err; } Data = 0x03; @@ -1065,8 +1063,8 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) * (can't set it up in mos7840_startup as the * * structures were not set up at that time.) */ - dev_dbg(&port->dev, "port number is %d\n", port->number); - dev_dbg(&port->dev, "serial number is %d\n", port->serial->minor); + dev_dbg(&port->dev, "port number is %d\n", port->port_number); + dev_dbg(&port->dev, "minor number is %d\n", port->minor); dev_dbg(&port->dev, "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress); dev_dbg(&port->dev, "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress); dev_dbg(&port->dev, "Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress); @@ -1074,9 +1072,7 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) mos7840_port->read_urb = port->read_urb; /* set up our bulk in urb */ - if ((serial->num_ports == 2) - && ((((__u16)port->number - - (__u16)(port->serial->minor)) % 2) != 0)) { + if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { usb_fill_bulk_urb(mos7840_port->read_urb, serial->dev, usb_rcvbulkpipe(serial->dev, @@ -1103,9 +1099,6 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) mos7840_port->read_urb_busy = false; } - /* initialize our wait queues */ - init_waitqueue_head(&mos7840_port->wait_chase); - /* initialize our port settings */ /* Must set to enable ints! */ mos7840_port->shadowMCR = MCR_MASTER_IE; @@ -1114,6 +1107,15 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) /* mos7840_change_port_settings(mos7840_port,old_termios); */ return 0; +err: + for (j = 0; j < NUM_URBS; ++j) { + urb = mos7840_port->write_urb_pool[j]; + if (!urb) + continue; + kfree(urb->transfer_buffer); + usb_free_urb(urb); + } + return status; } /***************************************************************************** @@ -1199,7 +1201,7 @@ static void mos7840_close(struct usb_serial_port *port) mos7840_port->read_urb_busy = false; port0->open_ports--; - dev_dbg(&port->dev, "%s in close%d:in port%d\n", __func__, port0->open_ports, port->number); + dev_dbg(&port->dev, "%s in close%d\n", __func__, port0->open_ports); if (port0->open_ports == 0) { if (serial->port[0]->interrupt_in_urb) { dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n"); @@ -1222,47 +1224,6 @@ static void mos7840_close(struct usb_serial_port *port) mos7840_port->open = 0; } -/************************************************************************ - * - * mos7840_block_until_chase_response - * - * This function will block the close until one of the following: - * 1. Response to our Chase comes from mos7840 - * 2. A timeout of 10 seconds without activity has expired - * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) - * - ************************************************************************/ - -static void mos7840_block_until_chase_response(struct tty_struct *tty, - struct moschip_port *mos7840_port) -{ - int timeout = msecs_to_jiffies(1000); - int wait = 10; - int count; - - while (1) { - count = mos7840_chars_in_buffer(tty); - - /* Check for Buffer status */ - if (count <= 0) - return; - - /* Block the thread for a while */ - interruptible_sleep_on_timeout(&mos7840_port->wait_chase, - timeout); - /* No activity.. count down section */ - wait--; - if (wait == 0) { - dev_dbg(&mos7840_port->port->dev, "%s - TIMEOUT\n", __func__); - return; - } else { - /* Reset timeout value back to seconds */ - wait = 10; - } - } - -} - /***************************************************************************** * mos7840_break * this function sends a break to the port @@ -1286,9 +1247,6 @@ static void mos7840_break(struct tty_struct *tty, int break_state) if (mos7840_port == NULL) return; - /* flush and block until tx is empty */ - mos7840_block_until_chase_response(tty, mos7840_port); - if (break_state == -1) data = mos7840_port->shadowLCR | LCR_SET_BREAK; else @@ -1435,9 +1393,7 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, memcpy(urb->transfer_buffer, current_position, transfer_size); /* fill urb with data and submit */ - if ((serial->num_ports == 2) - && ((((__u16)port->number - - (__u16)(port->serial->minor)) % 2) != 0)) { + if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { usb_fill_bulk_urb(urb, serial->dev, usb_sndbulkpipe(serial->dev, @@ -1458,13 +1414,8 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, data1 = urb->transfer_buffer; dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); - /* Turn on LED */ - if (mos7840_port->has_led && !mos7840_port->led_flag) { - mos7840_port->led_flag = true; - mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0301); - mod_timer(&mos7840_port->led_timer1, - jiffies + msecs_to_jiffies(LED_ON_MS)); - } + if (mos7840_port->has_led) + mos7840_led_activity(port); /* send it down the pipe */ status = usb_submit_urb(urb, GFP_ATOMIC); @@ -1732,10 +1683,9 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, if (mos7840_serial_paranoia_check(port->serial, __func__)) return -1; - number = mos7840_port->port->number - mos7840_port->port->serial->minor; + number = mos7840_port->port->port_number; - dev_dbg(&port->dev, "%s - port = %d, baud = %d\n", __func__, - mos7840_port->port->number, baudRate); + dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); /* reset clk_uart_sel in spregOffset */ if (baudRate > 115200) { #ifdef HW_flow_control @@ -2016,7 +1966,6 @@ static void mos7840_set_termios(struct tty_struct *tty, tty->termios.c_cflag, RELEVANT_IFLAG(tty->termios.c_iflag)); dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); - dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); /* change the port settings to the new ones specified */ @@ -2083,8 +2032,8 @@ static int mos7840_get_serial_info(struct moschip_port *mos7840_port, memset(&tmp, 0, sizeof(tmp)); tmp.type = PORT_16550A; - tmp.line = mos7840_port->port->serial->minor; - tmp.port = mos7840_port->port->number; + tmp.line = mos7840_port->port->minor; + tmp.port = mos7840_port->port->port_number; tmp.irq = 0; tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; @@ -2142,13 +2091,21 @@ static int mos7840_ioctl(struct tty_struct *tty, static int mos7810_check(struct usb_serial *serial) { int i, pass_count = 0; + u8 *buf; __u16 data = 0, mcr_data = 0; __u16 test_pattern = 0x55AA; + int res; + + buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); + if (!buf) + return 0; /* failed to identify 7810 */ /* Store MCR setting */ - usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, - &mcr_data, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + if (res == VENDOR_READ_LENGTH) + mcr_data = *buf; for (i = 0; i < 16; i++) { /* Send the 1-bit test pattern out to MCS7810 test pin */ @@ -2158,9 +2115,12 @@ static int mos7810_check(struct usb_serial *serial) MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); /* Read the test pattern back */ - usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), - MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, - VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + res = usb_control_msg(serial->dev, + usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, + MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, + VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + if (res == VENDOR_READ_LENGTH) + data = *buf; /* If this is a MCS7810 device, both test patterns must match */ if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) @@ -2174,38 +2134,56 @@ static int mos7810_check(struct usb_serial *serial) MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); + kfree(buf); + if (pass_count == 16) return 1; return 0; } -static int mos7840_calc_num_ports(struct usb_serial *serial) +static int mos7840_probe(struct usb_serial *serial, + const struct usb_device_id *id) { - __u16 data = 0x00; - int mos7840_num_ports; + u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); + u8 *buf; + int device_type; + + if (product == MOSCHIP_DEVICE_ID_7810 || + product == MOSCHIP_DEVICE_ID_7820) { + device_type = product; + goto out; + } + + buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL); + if (!buf) + return -ENOMEM; usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), - MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, - VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, + VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); - if (serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7810 || - serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7820) { - device_type = serial->dev->descriptor.idProduct; - } else { - /* For a MCS7840 device GPIO0 must be set to 1 */ - if ((data & 0x01) == 1) - device_type = MOSCHIP_DEVICE_ID_7840; - else if (mos7810_check(serial)) - device_type = MOSCHIP_DEVICE_ID_7810; - else - device_type = MOSCHIP_DEVICE_ID_7820; - } + /* For a MCS7840 device GPIO0 must be set to 1 */ + if (buf[0] & 0x01) + device_type = MOSCHIP_DEVICE_ID_7840; + else if (mos7810_check(serial)) + device_type = MOSCHIP_DEVICE_ID_7810; + else + device_type = MOSCHIP_DEVICE_ID_7820; + + kfree(buf); +out: + usb_set_serial_data(serial, (void *)(unsigned long)device_type); + + return 0; +} + +static int mos7840_calc_num_ports(struct usb_serial *serial) +{ + int device_type = (unsigned long)usb_get_serial_data(serial); + int mos7840_num_ports; mos7840_num_ports = (device_type >> 4) & 0x000F; - serial->num_bulk_in = mos7840_num_ports; - serial->num_bulk_out = mos7840_num_ports; - serial->num_ports = mos7840_num_ports; return mos7840_num_ports; } @@ -2213,6 +2191,7 @@ static int mos7840_calc_num_ports(struct usb_serial *serial) static int mos7840_port_probe(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; + int device_type = (unsigned long)usb_get_serial_data(serial); struct moschip_port *mos7840_port; int status; int pnum; @@ -2221,7 +2200,7 @@ static int mos7840_port_probe(struct usb_serial_port *port) /* we set up the pointers to the endpoints in the mos7840_open * * function, as the structures aren't created yet. */ - pnum = port->number - serial->minor; + pnum = port->port_number; dev_dbg(&port->dev, "mos7840_startup: configuring port %d\n", pnum); mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); @@ -2242,10 +2221,8 @@ static int mos7840_port_probe(struct usb_serial_port *port) * usb-serial.c:get_free_serial() and cannot therefore be used * to index device instances */ mos7840_port->port_num = pnum + 1; - dev_dbg(&port->dev, "port->number = %d\n", port->number); - dev_dbg(&port->dev, "port->serial->minor = %d\n", port->serial->minor); + dev_dbg(&port->dev, "port->minor = %d\n", port->minor); dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num); - dev_dbg(&port->dev, "serial->minor = %d\n", serial->minor); if (mos7840_port->port_num == 1) { mos7840_port->SpRegOffset = 0x0; @@ -2390,6 +2367,14 @@ static int mos7840_port_probe(struct usb_serial_port *port) if (device_type == MOSCHIP_DEVICE_ID_7810) { mos7840_port->has_led = true; + mos7840_port->led_urb = usb_alloc_urb(0, GFP_KERNEL); + mos7840_port->led_dr = kmalloc(sizeof(*mos7840_port->led_dr), + GFP_KERNEL); + if (!mos7840_port->led_urb || !mos7840_port->led_dr) { + status = -ENOMEM; + goto error; + } + init_timer(&mos7840_port->led_timer1); mos7840_port->led_timer1.function = mos7840_led_off; mos7840_port->led_timer1.expires = @@ -2402,8 +2387,6 @@ static int mos7840_port_probe(struct usb_serial_port *port) jiffies + msecs_to_jiffies(LED_OFF_MS); mos7840_port->led_timer2.data = (unsigned long)mos7840_port; - mos7840_port->led_flag = false; - /* Turn off LED */ mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); } @@ -2425,6 +2408,8 @@ out: } return 0; error: + kfree(mos7840_port->led_dr); + usb_free_urb(mos7840_port->led_urb); kfree(mos7840_port->dr); kfree(mos7840_port->ctrl_buf); usb_free_urb(mos7840_port->control_urb); @@ -2445,6 +2430,10 @@ static int mos7840_port_remove(struct usb_serial_port *port) del_timer_sync(&mos7840_port->led_timer1); del_timer_sync(&mos7840_port->led_timer2); + + usb_kill_urb(mos7840_port->led_urb); + usb_free_urb(mos7840_port->led_urb); + kfree(mos7840_port->led_dr); } usb_kill_urb(mos7840_port->control_urb); usb_free_urb(mos7840_port->control_urb); @@ -2471,9 +2460,7 @@ static struct usb_serial_driver moschip7840_4port_device = { .throttle = mos7840_throttle, .unthrottle = mos7840_unthrottle, .calc_num_ports = mos7840_calc_num_ports, -#ifdef MCSSerialProbe - .probe = mos7840_serial_probe, -#endif + .probe = mos7840_probe, .ioctl = mos7840_ioctl, .set_termios = mos7840_set_termios, .break_ctl = mos7840_break, diff --git a/drivers/usb/serial/moto_modem.c b/drivers/usb/serial/moto_modem.c deleted file mode 100644 index c5ff6c7795a6..000000000000 --- a/drivers/usb/serial/moto_modem.c +++ /dev/null @@ -1,48 +0,0 @@ -/* - * Motorola USB Phone driver - * - * Copyright (C) 2008 Greg Kroah-Hartman <greg@kroah.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * {sigh} - * Motorola should be using the CDC ACM USB spec, but instead - * they try to just "do their own thing"... This driver should handle a - * few phones in which a basic "dumb serial connection" is needed to be - * able to get a connection through to them. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/tty.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <linux/usb/serial.h> - -static const struct usb_device_id id_table[] = { - { USB_DEVICE(0x05c6, 0x3197) }, /* unknown Motorola phone */ - { USB_DEVICE(0x0c44, 0x0022) }, /* unknown Mororola phone */ - { USB_DEVICE(0x22b8, 0x2a64) }, /* Motorola KRZR K1m */ - { USB_DEVICE(0x22b8, 0x2c84) }, /* Motorola VE240 phone */ - { USB_DEVICE(0x22b8, 0x2c64) }, /* Motorola V950 phone */ - { }, -}; -MODULE_DEVICE_TABLE(usb, id_table); - -static struct usb_serial_driver moto_device = { - .driver = { - .owner = THIS_MODULE, - .name = "moto-modem", - }, - .id_table = id_table, - .num_ports = 1, -}; - -static struct usb_serial_driver * const serial_drivers[] = { - &moto_device, NULL -}; - -module_usb_serial_driver(serial_drivers, id_table); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index 5f4b0cd0f6e9..cbe779f578f9 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -348,7 +348,7 @@ static int get_serial_info(struct usb_serial_port *port, /* fake emulate a 16550 uart to make userspace code happy */ tmp.type = PORT_16550A; - tmp.line = port->serial->minor; + tmp.line = port->minor; tmp.port = 0; tmp.irq = 0; tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; @@ -367,7 +367,7 @@ static int opticon_ioctl(struct tty_struct *tty, { struct usb_serial_port *port = tty->driver_data; - dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); + dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); switch (cmd) { case TIOCGSERIAL: diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 93d02bc4eb52..1cf6f125f5f0 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -159,8 +159,6 @@ static void option_instat_callback(struct urb *urb); #define NOVATELWIRELESS_PRODUCT_HSPA_EMBEDDED_FULLSPEED 0x9000 #define NOVATELWIRELESS_PRODUCT_HSPA_EMBEDDED_HIGHSPEED 0x9001 #define NOVATELWIRELESS_PRODUCT_E362 0x9010 -#define NOVATELWIRELESS_PRODUCT_G1 0xA001 -#define NOVATELWIRELESS_PRODUCT_G1_M 0xA002 #define NOVATELWIRELESS_PRODUCT_G2 0xA010 #define NOVATELWIRELESS_PRODUCT_MC551 0xB001 @@ -250,13 +248,7 @@ static void option_instat_callback(struct urb *urb); #define ZTE_PRODUCT_MF622 0x0001 #define ZTE_PRODUCT_MF628 0x0015 #define ZTE_PRODUCT_MF626 0x0031 -#define ZTE_PRODUCT_CDMA_TECH 0xfffe -#define ZTE_PRODUCT_AC8710 0xfff1 -#define ZTE_PRODUCT_AC2726 0xfff5 -#define ZTE_PRODUCT_AC8710T 0xffff #define ZTE_PRODUCT_MC2718 0xffe8 -#define ZTE_PRODUCT_AD3812 0xffeb -#define ZTE_PRODUCT_MC2716 0xffed #define BENQ_VENDOR_ID 0x04a5 #define BENQ_PRODUCT_H10 0x4068 @@ -349,17 +341,12 @@ static void option_instat_callback(struct urb *urb); #define OLIVETTI_VENDOR_ID 0x0b3c #define OLIVETTI_PRODUCT_OLICARD100 0xc000 #define OLIVETTI_PRODUCT_OLICARD145 0xc003 +#define OLIVETTI_PRODUCT_OLICARD200 0xc005 /* Celot products */ #define CELOT_VENDOR_ID 0x211f #define CELOT_PRODUCT_CT680M 0x6801 -/* ONDA Communication vendor id */ -#define ONDA_VENDOR_ID 0x1ee8 - -/* ONDA MT825UP HSDPA 14.2 modem */ -#define ONDA_MT825UP 0x000b - /* Samsung products */ #define SAMSUNG_VENDOR_ID 0x04e8 #define SAMSUNG_PRODUCT_GT_B3730 0x6889 @@ -452,7 +439,8 @@ static void option_instat_callback(struct urb *urb); /* Hyundai Petatel Inc. products */ #define PETATEL_VENDOR_ID 0x1ff4 -#define PETATEL_PRODUCT_NP10T 0x600e +#define PETATEL_PRODUCT_NP10T_600A 0x600a +#define PETATEL_PRODUCT_NP10T_600E 0x600e /* TP-LINK Incorporated products */ #define TPLINK_VENDOR_ID 0x2357 @@ -495,18 +483,10 @@ static const struct option_blacklist_info zte_k3765_z_blacklist = { .reserved = BIT(4), }; -static const struct option_blacklist_info zte_ad3812_z_blacklist = { - .sendsetup = BIT(0) | BIT(1) | BIT(2), -}; - static const struct option_blacklist_info zte_mc2718_z_blacklist = { .sendsetup = BIT(1) | BIT(2) | BIT(3) | BIT(4), }; -static const struct option_blacklist_info zte_mc2716_z_blacklist = { - .sendsetup = BIT(1) | BIT(2) | BIT(3), -}; - static const struct option_blacklist_info huawei_cdc12_blacklist = { .reserved = BIT(1) | BIT(2), }; @@ -593,6 +573,8 @@ static const struct usb_device_id option_ids[] = { .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3765, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x14ac, 0xff, 0xff, 0xff), /* Huawei E1820 */ + .driver_info = (kernel_ulong_t) &net_intf1_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4605, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, { USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0xff, 0xff, 0xff) }, @@ -742,8 +724,6 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC547) }, { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EVDO_EMBEDDED_HIGHSPEED) }, { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_HSPA_EMBEDDED_HIGHSPEED) }, - { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_G1) }, - { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_G1_M) }, { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_G2) }, /* Novatel Ovation MC551 a.k.a. Verizon USB551L */ { USB_DEVICE_AND_INTERFACE_INFO(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC551, 0xff, 0xff, 0xff) }, @@ -797,8 +777,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_INTERFACE_CLASS(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1012, 0xff) }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC650) }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) }, - { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */ + { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x0023)}, /* ONYX 3G device */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */ { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6280) }, /* BP3-USB & BP3-EXT HSDPA */ { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6008) }, @@ -834,7 +814,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0017, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0018, 0xff, 0xff, 0xff) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0019, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0019, 0xff, 0xff, 0xff), + .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0020, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0021, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, @@ -1199,16 +1180,9 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0178, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH, 0xff, 0xff, 0xff) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC8710, 0xff, 0xff, 0xff) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC2726, 0xff, 0xff, 0xff) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC8710T, 0xff, 0xff, 0xff) }, + /* NOTE: most ZTE CDMA devices should be driven by zte_ev, not option */ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2718, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t)&zte_mc2718_z_blacklist }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AD3812, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&zte_ad3812_z_blacklist }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2716, 0xff, 0xff, 0xff), - .driver_info = (kernel_ulong_t)&zte_mc2716_z_blacklist }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x01) }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x05) }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x86, 0x10) }, @@ -1280,8 +1254,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD100) }, { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD145) }, + { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD200) }, { USB_DEVICE(CELOT_VENDOR_ID, CELOT_PRODUCT_CT680M) }, /* CT-650 CDMA 450 1xEVDO modem */ - { USB_DEVICE(ONDA_VENDOR_ID, ONDA_MT825UP) }, /* ONDA MT825UP modem */ { USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_GT_B3730, USB_CLASS_CDC_DATA, 0x00, 0x00) }, /* Samsung GT-B3730 LTE USB modem.*/ { USB_DEVICE(YUGA_VENDOR_ID, YUGA_PRODUCT_CEM600) }, { USB_DEVICE(YUGA_VENDOR_ID, YUGA_PRODUCT_CEM610) }, @@ -1353,9 +1327,12 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_4COM2, 0xff, 0x02, 0x01) }, { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_4COM2, 0xff, 0x00, 0x00) }, { USB_DEVICE(CELLIENT_VENDOR_ID, CELLIENT_PRODUCT_MEN200) }, - { USB_DEVICE(PETATEL_VENDOR_ID, PETATEL_PRODUCT_NP10T) }, + { USB_DEVICE(PETATEL_VENDOR_ID, PETATEL_PRODUCT_NP10T_600A) }, + { USB_DEVICE(PETATEL_VENDOR_ID, PETATEL_PRODUCT_NP10T_600E) }, { USB_DEVICE(TPLINK_VENDOR_ID, TPLINK_PRODUCT_MA180), .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + { USB_DEVICE(TPLINK_VENDOR_ID, 0x9000), /* TP-Link MA260 */ + .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, { USB_DEVICE(CHANGHONG_VENDOR_ID, CHANGHONG_PRODUCT_CH690) }, { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d01, 0xff, 0x02, 0x01) }, /* D-Link DWM-156 (variant) */ { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d01, 0xff, 0x00, 0x00) }, /* D-Link DWM-156 (variant) */ @@ -1363,6 +1340,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d02, 0xff, 0x00, 0x00) }, { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x02, 0x01) }, { USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x00, 0x00) }, + { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */ { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids); diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index 7e3e0782e51f..a2080ac7b7e5 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -343,6 +343,8 @@ static int oti6858_port_probe(struct usb_serial_port *port) usb_set_serial_port_data(port, priv); + port->port.drain_delay = 256; /* FIXME: check the FIFO length */ + return 0; } @@ -411,9 +413,6 @@ static void oti6858_set_termios(struct tty_struct *tty, __le16 divisor; int br; - if (!tty) - return; - cflag = tty->termios.c_cflag; spin_lock_irqsave(&priv->lock, flags); @@ -509,7 +508,6 @@ static void oti6858_set_termios(struct tty_struct *tty, static int oti6858_open(struct tty_struct *tty, struct usb_serial_port *port) { struct oti6858_private *priv = usb_get_serial_port_data(port); - struct ktermios tmp_termios; struct usb_serial *serial = port->serial; struct oti6858_control_pkt *buf; unsigned long flags; @@ -560,8 +558,8 @@ static int oti6858_open(struct tty_struct *tty, struct usb_serial_port *port) /* setup termios */ if (tty) - oti6858_set_termios(tty, port, &tmp_termios); - port->port.drain_delay = 256; /* FIXME: check the FIFO length */ + oti6858_set_termios(tty, port, NULL); + return 0; } diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 7151659367a0..e7a84f0f5179 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -4,6 +4,11 @@ * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com) * Copyright (C) 2003 IBM Corp. * + * Copyright (C) 2009, 2013 Frank Schäfer <fschaefer.oss@googlemail.com> + * - fixes, improvements and documentation for the baud rate encoding methods + * Copyright (C) 2013 Reinhard Max <max@suse.de> + * - fixes and improvements for the divisor based baud rate encoding method + * * Original driver for 2.2.x by anonymous * * This program is free software; you can redistribute it and/or @@ -29,6 +34,7 @@ #include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/serial.h> +#include <asm/unaligned.h> #include "pl2303.h" /* @@ -128,10 +134,17 @@ MODULE_DEVICE_TABLE(usb, id_table); enum pl2303_type { - type_0, /* don't know the difference between type 0 and */ - type_1, /* type 1, until someone from prolific tells us... */ - HX, /* HX version of the pl2303 chip */ + type_0, /* H version ? */ + type_1, /* H version ? */ + HX_TA, /* HX(A) / X(A) / TA version */ /* TODO: improve */ + HXD_EA_RA_SA, /* HXD / EA / RA / SA version */ /* TODO: improve */ + TB, /* TB version */ }; +/* + * NOTE: don't know the difference between type 0 and type 1, + * until someone from Prolific tells us... + * TODO: distinguish between X/HX, TA and HXD, EA, RA, SA variants + */ struct pl2303_serial_private { enum pl2303_type type; @@ -171,6 +184,7 @@ static int pl2303_startup(struct usb_serial *serial) { struct pl2303_serial_private *spriv; enum pl2303_type type = type_0; + char *type_str = "unknown (treating as type_0)"; unsigned char *buf; spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); @@ -183,15 +197,38 @@ static int pl2303_startup(struct usb_serial *serial) return -ENOMEM; } - if (serial->dev->descriptor.bDeviceClass == 0x02) + if (serial->dev->descriptor.bDeviceClass == 0x02) { type = type_0; - else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) - type = HX; - else if (serial->dev->descriptor.bDeviceClass == 0x00) - type = type_1; - else if (serial->dev->descriptor.bDeviceClass == 0xFF) + type_str = "type_0"; + } else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) { + /* + * NOTE: The bcdDevice version is the only difference between + * the device descriptors of the X/HX, HXD, EA, RA, SA, TA, TB + */ + if (le16_to_cpu(serial->dev->descriptor.bcdDevice) == 0x300) { + type = HX_TA; + type_str = "X/HX/TA"; + } else if (le16_to_cpu(serial->dev->descriptor.bcdDevice) + == 0x400) { + type = HXD_EA_RA_SA; + type_str = "HXD/EA/RA/SA"; + } else if (le16_to_cpu(serial->dev->descriptor.bcdDevice) + == 0x500) { + type = TB; + type_str = "TB"; + } else { + dev_info(&serial->interface->dev, + "unknown/unsupported device type\n"); + kfree(spriv); + kfree(buf); + return -ENODEV; + } + } else if (serial->dev->descriptor.bDeviceClass == 0x00 + || serial->dev->descriptor.bDeviceClass == 0xFF) { type = type_1; - dev_dbg(&serial->interface->dev, "device type: %d\n", type); + type_str = "type_1"; + } + dev_dbg(&serial->interface->dev, "device type: %s\n", type_str); spriv->type = type; usb_set_serial_data(serial, spriv); @@ -206,10 +243,10 @@ static int pl2303_startup(struct usb_serial *serial) pl2303_vendor_read(0x8383, 0, serial, buf); pl2303_vendor_write(0, 1, serial); pl2303_vendor_write(1, 0, serial); - if (type == HX) - pl2303_vendor_write(2, 0x44, serial); - else + if (type == type_0 || type == type_1) pl2303_vendor_write(2, 0x24, serial); + else + pl2303_vendor_write(2, 0x44, serial); kfree(buf); return 0; @@ -235,6 +272,8 @@ static int pl2303_port_probe(struct usb_serial_port *port) usb_set_serial_port_data(port, priv); + port->port.drain_delay = 256; + return 0; } @@ -261,6 +300,175 @@ static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) return retval; } +static int pl2303_baudrate_encode_direct(int baud, enum pl2303_type type, + u8 buf[4]) +{ + /* + * NOTE: Only the values defined in baud_sup are supported ! + * => if unsupported values are set, the PL2303 seems to + * use 9600 baud (at least my PL2303X always does) + */ + const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, + 4800, 7200, 9600, 14400, 19200, 28800, 38400, + 57600, 115200, 230400, 460800, 614400, 921600, + 1228800, 2457600, 3000000, 6000000, 12000000 }; + /* + * NOTE: With the exception of type_0/1 devices, the following + * additional baud rates are supported (tested with HX rev. 3A only): + * 110*, 56000*, 128000, 134400, 161280, 201600, 256000*, 268800, + * 403200, 806400. (*: not HX) + * + * Maximum values: HXD, TB: 12000000; HX, TA: 6000000; + * type_0+1: 1228800; RA: 921600; SA: 115200 + * + * As long as we are not using this encoding method for anything else + * than the type_0+1 and HX chips, there is no point in complicating + * the code to support them. + */ + int i; + + /* Set baudrate to nearest supported value */ + for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) { + if (baud_sup[i] > baud) + break; + } + if (i == ARRAY_SIZE(baud_sup)) + baud = baud_sup[i - 1]; + else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) + baud = baud_sup[i - 1]; + else + baud = baud_sup[i]; + /* Respect the chip type specific baud rate limits */ + /* + * FIXME: as long as we don't know how to distinguish between the + * HXD, EA, RA, and SA chip variants, allow the max. value of 12M. + */ + if (type == HX_TA) + baud = min_t(int, baud, 6000000); + else if (type == type_0 || type == type_1) + baud = min_t(int, baud, 1228800); + /* Direct (standard) baud rate encoding method */ + put_unaligned_le32(baud, buf); + + return baud; +} + +static int pl2303_baudrate_encode_divisor(int baud, enum pl2303_type type, + u8 buf[4]) +{ + /* + * Divisor based baud rate encoding method + * + * NOTE: it's not clear if the type_0/1 chips support this method + * + * divisor = 12MHz * 32 / baudrate = 2^A * B + * + * with + * + * A = buf[1] & 0x0e + * B = buf[0] + (buf[1] & 0x01) << 8 + * + * Special cases: + * => 8 < B < 16: device seems to work not properly + * => B <= 8: device uses the max. value B = 512 instead + */ + unsigned int A, B; + + /* + * NOTE: The Windows driver allows maximum baud rates of 110% of the + * specified maximium value. + * Quick tests with early (2004) HX (rev. A) chips suggest, that even + * higher baud rates (up to the maximum of 24M baud !) are working fine, + * but that should really be tested carefully in "real life" scenarios + * before removing the upper limit completely. + * Baud rates smaller than the specified 75 baud are definitely working + * fine. + */ + if (type == type_0 || type == type_1) + baud = min_t(int, baud, 1228800 * 1.1); + else if (type == HX_TA) + baud = min_t(int, baud, 6000000 * 1.1); + else if (type == HXD_EA_RA_SA) + /* HXD, EA: 12Mbps; RA: 1Mbps; SA: 115200 bps */ + /* + * FIXME: as long as we don't know how to distinguish between + * these chip variants, allow the max. of these values + */ + baud = min_t(int, baud, 12000000 * 1.1); + else if (type == TB) + baud = min_t(int, baud, 12000000 * 1.1); + /* Determine factors A and B */ + A = 0; + B = 12000000 * 32 / baud; /* 12MHz */ + B <<= 1; /* Add one bit for rounding */ + while (B > (512 << 1) && A <= 14) { + A += 2; + B >>= 2; + } + if (A > 14) { /* max. divisor = min. baudrate reached */ + A = 14; + B = 512; + /* => ~45.78 baud */ + } else { + B = (B + 1) >> 1; /* Round the last bit */ + } + /* Handle special cases */ + if (B == 512) + B = 0; /* also: 1 to 8 */ + else if (B < 16) + /* + * NOTE: With the current algorithm this happens + * only for A=0 and means that the min. divisor + * (respectively: the max. baudrate) is reached. + */ + B = 16; /* => 24 MBaud */ + /* Encode the baud rate */ + buf[3] = 0x80; /* Select divisor encoding method */ + buf[2] = 0; + buf[1] = (A & 0x0e); /* A */ + buf[1] |= ((B & 0x100) >> 8); /* MSB of B */ + buf[0] = B & 0xff; /* 8 LSBs of B */ + /* Calculate the actual/resulting baud rate */ + if (B <= 8) + B = 512; + baud = 12000000 * 32 / ((1 << A) * B); + + return baud; +} + +static void pl2303_encode_baudrate(struct tty_struct *tty, + struct usb_serial_port *port, + enum pl2303_type type, + u8 buf[4]) +{ + int baud; + + baud = tty_get_baud_rate(tty); + dev_dbg(&port->dev, "baud requested = %d\n", baud); + if (!baud) + return; + /* + * There are two methods for setting/encoding the baud rate + * 1) Direct method: encodes the baud rate value directly + * => supported by all chip types + * 2) Divisor based method: encodes a divisor to a base value (12MHz*32) + * => supported by HX chips (and likely not by type_0/1 chips) + * + * NOTE: Although the divisor based baud rate encoding method is much + * more flexible, some of the standard baud rate values can not be + * realized exactly. But the difference is very small (max. 0.2%) and + * the device likely uses the same baud rate generator for both methods + * so that there is likley no difference. + */ + if (type == type_0 || type == type_1) + baud = pl2303_baudrate_encode_direct(baud, type, buf); + else + baud = pl2303_baudrate_encode_divisor(baud, type, buf); + /* Save resulting baud rate */ + tty_encode_baud_rate(tty, baud, baud); + dev_dbg(&port->dev, "baud set = %d\n", baud); +} + static void pl2303_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { @@ -268,43 +476,34 @@ static void pl2303_set_termios(struct tty_struct *tty, struct pl2303_serial_private *spriv = usb_get_serial_data(serial); struct pl2303_private *priv = usb_get_serial_port_data(port); unsigned long flags; - unsigned int cflag; unsigned char *buf; - int baud; int i; u8 control; - const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, - 4800, 7200, 9600, 14400, 19200, 28800, 38400, - 57600, 115200, 230400, 460800, 614400, - 921600, 1228800, 2457600, 3000000, 6000000 }; - int baud_floor, baud_ceil; - int k; - - /* The PL2303 is reported to lose bytes if you change - serial settings even to the same values as before. Thus - we actually need to filter in this specific case */ - if (!tty_termios_hw_change(&tty->termios, old_termios)) + /* + * The PL2303 is reported to lose bytes if you change serial settings + * even to the same values as before. Thus we actually need to filter + * in this specific case. + */ + if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; - cflag = tty->termios.c_cflag; - buf = kzalloc(7, GFP_KERNEL); if (!buf) { dev_err(&port->dev, "%s - out of memory.\n", __func__); /* Report back no change occurred */ - tty->termios = *old_termios; + if (old_termios) + tty->termios = *old_termios; return; } i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, 0, 0, buf, 7, 100); - dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x\n", i, - buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); + dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); - if (cflag & CSIZE) { - switch (cflag & CSIZE) { + if (C_CSIZE(tty)) { + switch (C_CSIZE(tty)) { case CS5: buf[6] = 5; break; @@ -317,73 +516,22 @@ static void pl2303_set_termios(struct tty_struct *tty, default: case CS8: buf[6] = 8; - break; } dev_dbg(&port->dev, "data bits = %d\n", buf[6]); } - /* For reference buf[0]:buf[3] baud rate value */ - /* NOTE: Only the values defined in baud_sup are supported ! - * => if unsupported values are set, the PL2303 seems to use - * 9600 baud (at least my PL2303X always does) - */ - baud = tty_get_baud_rate(tty); - dev_dbg(&port->dev, "baud requested = %d\n", baud); - if (baud) { - /* Set baudrate to nearest supported value */ - for (k=0; k<ARRAY_SIZE(baud_sup); k++) { - if (baud_sup[k] / baud) { - baud_ceil = baud_sup[k]; - if (k==0) { - baud = baud_ceil; - } else { - baud_floor = baud_sup[k-1]; - if ((baud_ceil % baud) - > (baud % baud_floor)) - baud = baud_floor; - else - baud = baud_ceil; - } - break; - } - } - if (baud > 1228800) { - /* type_0, type_1 only support up to 1228800 baud */ - if (spriv->type != HX) - baud = 1228800; - else if (baud > 6000000) - baud = 6000000; - } - dev_dbg(&port->dev, "baud set = %d\n", baud); - if (baud <= 115200) { - buf[0] = baud & 0xff; - buf[1] = (baud >> 8) & 0xff; - buf[2] = (baud >> 16) & 0xff; - buf[3] = (baud >> 24) & 0xff; - } else { - /* apparently the formula for higher speeds is: - * baudrate = 12M * 32 / (2^buf[1]) / buf[0] - */ - unsigned tmp = 12*1000*1000*32 / baud; - buf[3] = 0x80; - buf[2] = 0; - buf[1] = (tmp >= 256); - while (tmp >= 256) { - tmp >>= 2; - buf[1] <<= 1; - } - buf[0] = tmp; - } - } + /* For reference: buf[0]:buf[3] baud rate value */ + pl2303_encode_baudrate(tty, port, spriv->type, buf); /* For reference buf[4]=0 is 1 stop bits */ /* For reference buf[4]=1 is 1.5 stop bits */ /* For reference buf[4]=2 is 2 stop bits */ - if (cflag & CSTOPB) { - /* NOTE: Comply with "real" UARTs / RS232: + if (C_CSTOPB(tty)) { + /* + * NOTE: Comply with "real" UARTs / RS232: * use 1.5 instead of 2 stop bits with 5 data bits */ - if ((cflag & CSIZE) == CS5) { + if (C_CSIZE(tty) == CS5) { buf[4] = 1; dev_dbg(&port->dev, "stop bits = 1.5\n"); } else { @@ -395,14 +543,14 @@ static void pl2303_set_termios(struct tty_struct *tty, dev_dbg(&port->dev, "stop bits = 1\n"); } - if (cflag & PARENB) { + if (C_PARENB(tty)) { /* For reference buf[5]=0 is none parity */ /* For reference buf[5]=1 is odd parity */ /* For reference buf[5]=2 is even parity */ /* For reference buf[5]=3 is mark parity */ /* For reference buf[5]=4 is space parity */ - if (cflag & PARODD) { - if (cflag & CMSPAR) { + if (C_PARODD(tty)) { + if (tty->termios.c_cflag & CMSPAR) { buf[5] = 3; dev_dbg(&port->dev, "parity = mark\n"); } else { @@ -410,7 +558,7 @@ static void pl2303_set_termios(struct tty_struct *tty, dev_dbg(&port->dev, "parity = odd\n"); } } else { - if (cflag & CMSPAR) { + if (tty->termios.c_cflag & CMSPAR) { buf[5] = 4; dev_dbg(&port->dev, "parity = space\n"); } else { @@ -431,9 +579,9 @@ static void pl2303_set_termios(struct tty_struct *tty, /* change control lines if we are switching to or from B0 */ spin_lock_irqsave(&priv->lock, flags); control = priv->line_control; - if ((cflag & CBAUD) == B0) + if (C_BAUD(tty) == B0) priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); - else if ((old_termios->c_cflag & CBAUD) == B0) + else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) priv->line_control |= (CONTROL_DTR | CONTROL_RTS); if (control != priv->line_control) { control = priv->line_control; @@ -443,27 +591,21 @@ static void pl2303_set_termios(struct tty_struct *tty, spin_unlock_irqrestore(&priv->lock, flags); } - buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; - + memset(buf, 0, 7); i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, 0, 0, buf, 7, 100); - dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x\n", i, - buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); + dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); - if (cflag & CRTSCTS) { - if (spriv->type == HX) - pl2303_vendor_write(0x0, 0x61, serial); - else + if (C_CRTSCTS(tty)) { + if (spriv->type == type_0 || spriv->type == type_1) pl2303_vendor_write(0x0, 0x41, serial); + else + pl2303_vendor_write(0x0, 0x61, serial); } else { pl2303_vendor_write(0x0, 0x0, serial); } - /* Save resulting baud rate */ - if (baud) - tty_encode_baud_rate(tty, baud, baud); - kfree(buf); } @@ -492,12 +634,11 @@ static void pl2303_close(struct usb_serial_port *port) static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; struct usb_serial *serial = port->serial; struct pl2303_serial_private *spriv = usb_get_serial_data(serial); int result; - if (spriv->type != HX) { + if (spriv->type == type_0 || spriv->type == type_1) { usb_clear_halt(serial->dev, port->write_urb->pipe); usb_clear_halt(serial->dev, port->read_urb->pipe); } else { @@ -508,7 +649,7 @@ static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) /* Setup termios */ if (tty) - pl2303_set_termios(tty, port, &tmp_termios); + pl2303_set_termios(tty, port, NULL); result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (result) { @@ -523,7 +664,6 @@ static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) return result; } - port->port.drain_delay = 256; return 0; } @@ -641,8 +781,8 @@ static int pl2303_ioctl(struct tty_struct *tty, case TIOCGSERIAL: memset(&ser, 0, sizeof ser); ser.type = PORT_16654; - ser.line = port->serial->minor; - ser.port = port->number; + ser.line = port->minor; + ser.port = port->port_number; ser.baud_base = 460800; if (copy_to_user((void __user *)arg, &ser, sizeof ser)) @@ -791,8 +931,10 @@ static void pl2303_process_read_urb(struct urb *urb) tty_flag = TTY_PARITY; else if (line_status & UART_FRAME_ERROR) tty_flag = TTY_FRAME; - dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, tty_flag); + if (tty_flag != TTY_NORMAL) + dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, + tty_flag); /* overrun is special, not associated with a char */ if (line_status & UART_OVERRUN_ERROR) tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 59b32b782126..c65437cfd4a2 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -35,7 +35,13 @@ static const struct usb_device_id id_table[] = { {DEVICE_G1K(0x04da, 0x250c)}, /* Panasonic Gobi QDL device */ {DEVICE_G1K(0x413c, 0x8172)}, /* Dell Gobi Modem device */ {DEVICE_G1K(0x413c, 0x8171)}, /* Dell Gobi QDL device */ - {DEVICE_G1K(0x1410, 0xa001)}, /* Novatel Gobi Modem device */ + {DEVICE_G1K(0x1410, 0xa001)}, /* Novatel/Verizon USB-1000 */ + {DEVICE_G1K(0x1410, 0xa002)}, /* Novatel Gobi Modem device */ + {DEVICE_G1K(0x1410, 0xa003)}, /* Novatel Gobi Modem device */ + {DEVICE_G1K(0x1410, 0xa004)}, /* Novatel Gobi Modem device */ + {DEVICE_G1K(0x1410, 0xa005)}, /* Novatel Gobi Modem device */ + {DEVICE_G1K(0x1410, 0xa006)}, /* Novatel Gobi Modem device */ + {DEVICE_G1K(0x1410, 0xa007)}, /* Novatel Gobi Modem device */ {DEVICE_G1K(0x1410, 0xa008)}, /* Novatel Gobi QDL device */ {DEVICE_G1K(0x0b05, 0x1776)}, /* Asus Gobi Modem device */ {DEVICE_G1K(0x0b05, 0x1774)}, /* Asus Gobi QDL device */ @@ -118,6 +124,7 @@ static const struct usb_device_id id_table[] = { {USB_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */ {USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */ {USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */ + {USB_DEVICE(0x0AF0, 0x8120)}, /* Option GTM681W */ /* non Gobi Qualcomm serial devices */ {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 0)}, /* Sierra Wireless MC7700 Device Management */ diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index 02b0803425c5..a24d59ae4032 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -62,6 +62,7 @@ #define MAX_BAUD_RATE 921600 #define DEFAULT_BAUD_RATE 9600 +#define QT2_READ_BUFFER_SIZE 512 /* size of read buffer */ #define QT2_WRITE_BUFFER_SIZE 512 /* size of write buffer */ #define QT2_WRITE_CONTROL_SIZE 5 /* control bytes used for a write */ @@ -112,7 +113,7 @@ struct qt2_serial_private { unsigned char current_port; /* current port for incoming data */ struct urb *read_urb; /* shared among all ports */ - char read_buffer[512]; + char *read_buffer; }; struct qt2_port_private { @@ -121,7 +122,7 @@ struct qt2_port_private { spinlock_t urb_lock; bool urb_in_use; struct urb *write_urb; - char write_buffer[QT2_WRITE_BUFFER_SIZE]; + char *write_buffer; spinlock_t lock; u8 shadowLSR; @@ -142,6 +143,7 @@ static void qt2_release(struct usb_serial *serial) serial_priv = usb_get_serial_data(serial); usb_free_urb(serial_priv->read_urb); + kfree(serial_priv->read_buffer); kfree(serial_priv); } @@ -343,7 +345,7 @@ static int qt2_open(struct tty_struct *tty, struct usb_serial_port *port) int status; unsigned long flags; - device_port = (u16) (port->number - port->serial->minor); + device_port = port->port_number; serial = port->serial; @@ -388,9 +390,8 @@ static int qt2_open(struct tty_struct *tty, struct usb_serial_port *port) status = qt2_set_port_config(serial->dev, device_port, DEFAULT_BAUD_RATE, UART_LCR_WLEN8); if (status < 0) { - dev_err(&port->dev, - "%s - initial setup failed for port %i (%i)\n", - __func__, port->number, device_port); + dev_err(&port->dev, "%s - initial setup failed (%i)\n", + __func__, device_port); return status; } @@ -466,7 +467,7 @@ static int get_serial_info(struct usb_serial_port *port, return -EFAULT; memset(&tmp, 0, sizeof(tmp)); - tmp.line = port->serial->minor; + tmp.line = port->minor; tmp.port = 0; tmp.irq = 0; tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; @@ -523,7 +524,7 @@ static void qt2_process_flush(struct usb_serial_port *port, unsigned char *ch) return; } -void qt2_process_read_urb(struct urb *urb) +static void qt2_process_read_urb(struct urb *urb) { struct usb_serial *serial; struct qt2_serial_private *serial_priv; @@ -684,7 +685,7 @@ static int qt2_setup_urbs(struct usb_serial *serial) usb_rcvbulkpipe(serial->dev, port0->bulk_in_endpointAddress), serial_priv->read_buffer, - sizeof(serial_priv->read_buffer), + QT2_READ_BUFFER_SIZE, qt2_read_bulk_callback, serial); status = usb_submit_urb(serial_priv->read_urb, GFP_KERNEL); @@ -719,6 +720,12 @@ static int qt2_attach(struct usb_serial *serial) return -ENOMEM; } + serial_priv->read_buffer = kmalloc(QT2_READ_BUFFER_SIZE, GFP_KERNEL); + if (!serial_priv->read_buffer) { + status = -ENOMEM; + goto err_buf; + } + usb_set_serial_data(serial, serial_priv); status = qt2_setup_urbs(serial); @@ -728,6 +735,8 @@ static int qt2_attach(struct usb_serial *serial) return 0; attach_failed: + kfree(serial_priv->read_buffer); +err_buf: kfree(serial_priv); return status; } @@ -746,21 +755,29 @@ static int qt2_port_probe(struct usb_serial_port *port) spin_lock_init(&port_priv->urb_lock); port_priv->port = port; + port_priv->write_buffer = kmalloc(QT2_WRITE_BUFFER_SIZE, GFP_KERNEL); + if (!port_priv->write_buffer) + goto err_buf; + port_priv->write_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!port_priv->write_urb) { - kfree(port_priv); - return -ENOMEM; - } + if (!port_priv->write_urb) + goto err_urb; + bEndpointAddress = serial->port[0]->bulk_out_endpointAddress; usb_fill_bulk_urb(port_priv->write_urb, serial->dev, usb_sndbulkpipe(serial->dev, bEndpointAddress), port_priv->write_buffer, - sizeof(port_priv->write_buffer), + QT2_WRITE_BUFFER_SIZE, qt2_write_bulk_callback, port); usb_set_serial_port_data(port, port_priv); return 0; +err_urb: + kfree(port_priv->write_buffer); +err_buf: + kfree(port_priv); + return -ENOMEM; } static int qt2_port_remove(struct usb_serial_port *port) @@ -769,6 +786,7 @@ static int qt2_port_remove(struct usb_serial_port *port) port_priv = usb_get_serial_port_data(port); usb_free_urb(port_priv->write_urb); + kfree(port_priv->write_buffer); kfree(port_priv); return 0; diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c index 21cd7bf2a8cc..ba895989d8c4 100644 --- a/drivers/usb/serial/safe_serial.c +++ b/drivers/usb/serial/safe_serial.c @@ -92,13 +92,6 @@ MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); -static __u16 vendor; /* no default */ -static __u16 product; /* no default */ -module_param(vendor, ushort, 0); -MODULE_PARM_DESC(vendor, "User specified USB idVendor (required)"); -module_param(product, ushort, 0); -MODULE_PARM_DESC(product, "User specified USB idProduct (required)"); - module_param(safe, bool, 0); MODULE_PARM_DESC(safe, "Turn Safe Encapsulation On/Off"); @@ -140,8 +133,6 @@ static struct usb_device_id id_table[] = { {MY_USB_DEVICE(0x4dd, 0x8003, CDC_DEVICE_CLASS, LINEO_INTERFACE_CLASS, LINEO_INTERFACE_SUBCLASS_SAFESERIAL)}, /* Collie */ {MY_USB_DEVICE(0x4dd, 0x8004, CDC_DEVICE_CLASS, LINEO_INTERFACE_CLASS, LINEO_INTERFACE_SUBCLASS_SAFESERIAL)}, /* Collie */ {MY_USB_DEVICE(0x5f9, 0xffff, CDC_DEVICE_CLASS, LINEO_INTERFACE_CLASS, LINEO_INTERFACE_SUBCLASS_SAFESERIAL)}, /* Sharp tmp */ - /* extra null entry for module vendor/produc parameters */ - {MY_USB_DEVICE(0, 0, CDC_DEVICE_CLASS, LINEO_INTERFACE_CLASS, LINEO_INTERFACE_SUBCLASS_SAFESERIAL)}, {} /* terminating entry */ }; @@ -272,7 +263,19 @@ static int safe_prepare_write_buffer(struct usb_serial_port *port, static int safe_startup(struct usb_serial *serial) { - switch (serial->interface->cur_altsetting->desc.bInterfaceProtocol) { + struct usb_interface_descriptor *desc; + + if (serial->dev->descriptor.bDeviceClass != CDC_DEVICE_CLASS) + return -ENODEV; + + desc = &serial->interface->cur_altsetting->desc; + + if (desc->bInterfaceClass != LINEO_INTERFACE_CLASS) + return -ENODEV; + if (desc->bInterfaceSubClass != LINEO_INTERFACE_SUBCLASS_SAFESERIAL) + return -ENODEV; + + switch (desc->bInterfaceProtocol) { case LINEO_SAFESERIAL_CRC: break; case LINEO_SAFESERIAL_CRC_PADDED: @@ -300,30 +303,4 @@ static struct usb_serial_driver * const serial_drivers[] = { &safe_device, NULL }; -static int __init safe_init(void) -{ - int i; - - /* if we have vendor / product parameters patch them into id list */ - if (vendor || product) { - pr_info("vendor: %x product: %x\n", vendor, product); - - for (i = 0; i < ARRAY_SIZE(id_table); i++) { - if (!id_table[i].idVendor && !id_table[i].idProduct) { - id_table[i].idVendor = vendor; - id_table[i].idProduct = product; - break; - } - } - } - - return usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, id_table); -} - -static void __exit safe_exit(void) -{ - usb_serial_deregister_drivers(serial_drivers); -} - -module_init(safe_init); -module_exit(safe_exit); +module_usb_serial_driver(serial_drivers, id_table); diff --git a/drivers/usb/serial/siemens_mpi.c b/drivers/usb/serial/siemens_mpi.c deleted file mode 100644 index a76b1ae54a2a..000000000000 --- a/drivers/usb/serial/siemens_mpi.c +++ /dev/null @@ -1,47 +0,0 @@ -/* - * Siemens USB-MPI Serial USB driver - * - * Copyright (C) 2005 Thomas Hergenhahn <thomas.hergenhahn@suse.de> - * Copyright (C) 2005,2008 Greg Kroah-Hartman <gregkh@suse.de> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/tty.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <linux/usb/serial.h> - -#define DRIVER_AUTHOR "Thomas Hergenhahn@web.de http://libnodave.sf.net" -#define DRIVER_DESC "Driver for Siemens USB/MPI adapter" - - -static const struct usb_device_id id_table[] = { - /* Vendor and product id for 6ES7-972-0CB20-0XA0 */ - { USB_DEVICE(0x908, 0x0004) }, - { }, -}; -MODULE_DEVICE_TABLE(usb, id_table); - -static struct usb_serial_driver siemens_usb_mpi_device = { - .driver = { - .owner = THIS_MODULE, - .name = "siemens_mpi", - }, - .id_table = id_table, - .num_ports = 1, -}; - -static struct usb_serial_driver * const serial_drivers[] = { - &siemens_usb_mpi_device, NULL -}; - -module_usb_serial_driver(serial_drivers, id_table); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index 8894665cd610..de958c5b52e3 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -914,7 +914,7 @@ static int sierra_port_probe(struct usb_serial_port *port) /* This is really the usb-serial port number of the interface * rather than the interface number. */ - ifnum = port->number - serial->minor; + ifnum = port->port_number; himemoryp = &typeA_interface_list; } diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index cf3df793c2b7..4abac28b5992 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -169,6 +169,8 @@ static int spcp8x5_port_probe(struct usb_serial_port *port) usb_set_serial_port_data(port, priv); + port->port.drain_delay = 256; + return 0; } @@ -291,7 +293,6 @@ static void spcp8x5_set_termios(struct tty_struct *tty, struct spcp8x5_private *priv = usb_get_serial_port_data(port); unsigned long flags; unsigned int cflag = tty->termios.c_cflag; - unsigned int old_cflag = old_termios->c_cflag; unsigned short uartdata; unsigned char buf[2] = {0, 0}; int baud; @@ -299,15 +300,15 @@ static void spcp8x5_set_termios(struct tty_struct *tty, u8 control; /* check that they really want us to change something */ - if (!tty_termios_hw_change(&tty->termios, old_termios)) + if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; /* set DTR/RTS active */ spin_lock_irqsave(&priv->lock, flags); control = priv->line_control; - if ((old_cflag & CBAUD) == B0) { + if (old_termios && (old_termios->c_cflag & CBAUD) == B0) { priv->line_control |= MCR_DTR; - if (!(old_cflag & CRTSCTS)) + if (!(old_termios->c_cflag & CRTSCTS)) priv->line_control |= MCR_RTS; } if (control != priv->line_control) { @@ -394,7 +395,6 @@ static void spcp8x5_set_termios(struct tty_struct *tty, static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; struct usb_serial *serial = port->serial; struct spcp8x5_private *priv = usb_get_serial_port_data(port); int ret; @@ -411,9 +411,7 @@ static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) spcp8x5_set_ctrl_line(port, priv->line_control); if (tty) - spcp8x5_set_termios(tty, port, &tmp_termios); - - port->port.drain_delay = 256; + spcp8x5_set_termios(tty, port, NULL); return usb_serial_generic_open(tty, port); } diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c index 5b62dbbdf996..e5750be49054 100644 --- a/drivers/usb/serial/ssu100.c +++ b/drivers/usb/serial/ssu100.c @@ -323,7 +323,7 @@ static int get_serial_info(struct usb_serial_port *port, return -EFAULT; memset(&tmp, 0, sizeof(tmp)); - tmp.line = port->serial->minor; + tmp.line = port->minor; tmp.port = 0; tmp.irq = 0; tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index c92c5ed4e580..760b78560f67 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -45,8 +45,6 @@ #define TI_FIRMWARE_BUF_SIZE 16284 -#define TI_WRITE_BUF_SIZE 1024 - #define TI_TRANSFER_TIMEOUT 2 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */ @@ -71,13 +69,11 @@ struct ti_port { __u8 tp_uart_mode; /* 232 or 485 modes */ unsigned int tp_uart_base_addr; int tp_flags; - wait_queue_head_t tp_write_wait; struct ti_device *tp_tdev; struct usb_serial_port *tp_port; spinlock_t tp_lock; int tp_read_urb_state; int tp_write_urb_in_use; - struct kfifo write_fifo; }; struct ti_device { @@ -145,20 +141,9 @@ static int ti_download_firmware(struct ti_device *tdev); /* module parameters */ static int closing_wait = TI_DEFAULT_CLOSING_WAIT; -static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT]; -static unsigned int vendor_3410_count; -static ushort product_3410[TI_EXTRA_VID_PID_COUNT]; -static unsigned int product_3410_count; -static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT]; -static unsigned int vendor_5052_count; -static ushort product_5052[TI_EXTRA_VID_PID_COUNT]; -static unsigned int product_5052_count; /* supported devices */ -/* the array dimension is the number of default entries plus */ -/* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */ -/* null entry */ -static struct usb_device_id ti_id_table_3410[15+TI_EXTRA_VID_PID_COUNT+1] = { +static struct usb_device_id ti_id_table_3410[] = { { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, @@ -172,18 +157,21 @@ static struct usb_device_id ti_id_table_3410[15+TI_EXTRA_VID_PID_COUNT+1] = { { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, - { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, + { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) }, + { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, + { } /* terminator */ }; -static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = { +static struct usb_device_id ti_id_table_5052[] = { { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, + { } /* terminator */ }; -static struct usb_device_id ti_id_table_combined[19+2*TI_EXTRA_VID_PID_COUNT+1] = { +static struct usb_device_id ti_id_table_combined[] = { { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, @@ -203,7 +191,7 @@ static struct usb_device_id ti_id_table_combined[19+2*TI_EXTRA_VID_PID_COUNT+1] { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, - { } + { } /* terminator */ }; static struct usb_serial_driver ti_1port_device = { @@ -292,61 +280,12 @@ module_param(closing_wait, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain in close, in .01 secs, default is 4000"); -module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO); -MODULE_PARM_DESC(vendor_3410, - "Vendor ids for 3410 based devices, 1-5 short integers"); -module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO); -MODULE_PARM_DESC(product_3410, - "Product ids for 3410 based devices, 1-5 short integers"); -module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO); -MODULE_PARM_DESC(vendor_5052, - "Vendor ids for 5052 based devices, 1-5 short integers"); -module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO); -MODULE_PARM_DESC(product_5052, - "Product ids for 5052 based devices, 1-5 short integers"); - MODULE_DEVICE_TABLE(usb, ti_id_table_combined); +module_usb_serial_driver(serial_drivers, ti_id_table_combined); /* Functions */ -static int __init ti_init(void) -{ - int i, j, c; - - /* insert extra vendor and product ids */ - c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1; - j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1; - for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) { - ti_id_table_3410[j].idVendor = vendor_3410[i]; - ti_id_table_3410[j].idProduct = product_3410[i]; - ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; - ti_id_table_combined[c].idVendor = vendor_3410[i]; - ti_id_table_combined[c].idProduct = product_3410[i]; - ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; - } - j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1; - for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) { - ti_id_table_5052[j].idVendor = vendor_5052[i]; - ti_id_table_5052[j].idProduct = product_5052[i]; - ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; - ti_id_table_combined[c].idVendor = vendor_5052[i]; - ti_id_table_combined[c].idProduct = product_5052[i]; - ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; - } - - return usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, ti_id_table_combined); -} - -static void __exit ti_exit(void) -{ - usb_serial_deregister_drivers(serial_drivers); -} - -module_init(ti_init); -module_exit(ti_exit); - - static int ti_startup(struct usb_serial *serial) { struct ti_device *tdev; @@ -370,7 +309,7 @@ static int ti_startup(struct usb_serial *serial) usb_set_serial_data(serial, tdev); /* determine device type */ - if (usb_match_id(serial->interface, ti_id_table_3410)) + if (serial->type == &ti_1port_device) tdev->td_is_3410 = 1; dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, tdev->td_is_3410 ? "3410" : "5052"); @@ -429,17 +368,14 @@ static int ti_port_probe(struct usb_serial_port *port) else tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; port->port.closing_wait = msecs_to_jiffies(10 * closing_wait); - init_waitqueue_head(&tport->tp_write_wait); - if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE, GFP_KERNEL)) { - kfree(tport); - return -ENOMEM; - } tport->tp_port = port; tport->tp_tdev = usb_get_serial_data(port->serial); tport->tp_uart_mode = 0; /* default is RS232 */ usb_set_serial_port_data(port, tport); + port->port.drain_delay = 3; + return 0; } @@ -448,7 +384,6 @@ static int ti_port_remove(struct usb_serial_port *port) struct ti_port *tport; tport = usb_get_serial_port_data(port); - kfifo_free(&tport->write_fifo); kfree(tport); return 0; @@ -476,7 +411,7 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) if (mutex_lock_interruptible(&tdev->td_open_close_lock)) return -ERESTARTSYS; - port_number = port->number - port->serial->minor; + port_number = port->port_number; tport->tp_msr = 0; tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); @@ -581,8 +516,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) tport->tp_is_open = 1; ++tdev->td_open_port_count; - port->port.drain_delay = 3; - goto release_lock; unlink_int_urb: @@ -615,10 +548,10 @@ static void ti_close(struct usb_serial_port *port) usb_kill_urb(port->write_urb); tport->tp_write_urb_in_use = 0; spin_lock_irqsave(&tport->tp_lock, flags); - kfifo_reset_out(&tport->write_fifo); + kfifo_reset_out(&port->write_fifo); spin_unlock_irqrestore(&tport->tp_lock, flags); - port_number = port->number - port->serial->minor; + port_number = port->port_number; dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__); status = ti_command_out_sync(tdev, TI_CLOSE_PORT, @@ -654,7 +587,7 @@ static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, if (tport == NULL || !tport->tp_is_open) return -ENODEV; - count = kfifo_in_locked(&tport->write_fifo, data, count, + count = kfifo_in_locked(&port->write_fifo, data, count, &tport->tp_lock); ti_send(tport); @@ -673,7 +606,7 @@ static int ti_write_room(struct tty_struct *tty) return 0; spin_lock_irqsave(&tport->tp_lock, flags); - room = kfifo_avail(&tport->write_fifo); + room = kfifo_avail(&port->write_fifo); spin_unlock_irqrestore(&tport->tp_lock, flags); dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); @@ -692,7 +625,7 @@ static int ti_chars_in_buffer(struct tty_struct *tty) return 0; spin_lock_irqsave(&tport->tp_lock, flags); - chars = kfifo_len(&tport->write_fifo); + chars = kfifo_len(&port->write_fifo); spin_unlock_irqrestore(&tport->tp_lock, flags); dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); @@ -776,7 +709,7 @@ static void ti_set_termios(struct tty_struct *tty, tcflag_t cflag, iflag; int baud; int status; - int port_number = port->number - port->serial->minor; + int port_number = port->port_number; unsigned int mcr; cflag = tty->termios.c_cflag; @@ -1089,13 +1022,11 @@ static void ti_bulk_in_callback(struct urb *urb) case -ESHUTDOWN: dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); tport->tp_tdev->td_urb_error = 1; - wake_up_interruptible(&tport->tp_write_wait); return; default: dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); tport->tp_tdev->td_urb_error = 1; - wake_up_interruptible(&tport->tp_write_wait); } if (status == -EPIPE) @@ -1151,13 +1082,11 @@ static void ti_bulk_out_callback(struct urb *urb) case -ESHUTDOWN: dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); tport->tp_tdev->td_urb_error = 1; - wake_up_interruptible(&tport->tp_write_wait); return; default: dev_err_console(port, "%s - nonzero urb status, %d\n", __func__, status); tport->tp_tdev->td_urb_error = 1; - wake_up_interruptible(&tport->tp_write_wait); } /* send any buffered data */ @@ -1196,7 +1125,7 @@ static void ti_send(struct ti_port *tport) if (tport->tp_write_urb_in_use) goto unlock; - count = kfifo_out(&tport->write_fifo, + count = kfifo_out(&port->write_fifo, port->write_urb->transfer_buffer, port->bulk_out_size); @@ -1231,7 +1160,6 @@ static void ti_send(struct ti_port *tport) /* more room in the buffer for new writes, wakeup */ tty_port_tty_wakeup(&port->port); - wake_up_interruptible(&tport->tp_write_wait); return; unlock: spin_unlock_irqrestore(&tport->tp_lock, flags); @@ -1262,7 +1190,7 @@ static int ti_get_lsr(struct ti_port *tport, u8 *lsr) int size, status; struct ti_device *tdev = tport->tp_tdev; struct usb_serial_port *port = tport->tp_port; - int port_number = port->number - port->serial->minor; + int port_number = port->port_number; struct ti_port_status *data; size = sizeof(struct ti_port_status); @@ -1308,10 +1236,10 @@ static int ti_get_serial_info(struct ti_port *tport, memset(&ret_serial, 0, sizeof(ret_serial)); ret_serial.type = PORT_16550A; - ret_serial.line = port->serial->minor; - ret_serial.port = port->number - port->serial->minor; + ret_serial.line = port->minor; + ret_serial.port = port->port_number; ret_serial.flags = tport->tp_flags; - ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE; + ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo); ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; ret_serial.closing_wait = cwait; @@ -1535,14 +1463,15 @@ static int ti_download_firmware(struct ti_device *tdev) char buf[32]; /* try ID specific firmware first, then try generic firmware */ - sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor, - dev->descriptor.idProduct); + sprintf(buf, "ti_usb-v%04x-p%04x.fw", + le16_to_cpu(dev->descriptor.idVendor), + le16_to_cpu(dev->descriptor.idProduct)); status = request_firmware(&fw_p, buf, &dev->dev); if (status != 0) { buf[0] = '\0'; - if (dev->descriptor.idVendor == MTS_VENDOR_ID) { - switch (dev->descriptor.idProduct) { + if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { + switch (le16_to_cpu(dev->descriptor.idProduct)) { case MTS_CDMA_PRODUCT_ID: strcpy(buf, "mts_cdma.fw"); break; diff --git a/drivers/usb/serial/ti_usb_3410_5052.h b/drivers/usb/serial/ti_usb_3410_5052.h index b353e7e3d480..4a2423e84d55 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.h +++ b/drivers/usb/serial/ti_usb_3410_5052.h @@ -52,7 +52,9 @@ /* Abbott Diabetics vendor and product ids */ #define ABBOTT_VENDOR_ID 0x1a61 -#define ABBOTT_PRODUCT_ID 0x3410 +#define ABBOTT_STEREO_PLUG_ID 0x3410 +#define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID +#define ABBOTT_STRIP_PORT_ID 0x3420 /* Commands */ #define TI_GET_VERSION 0x01 diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c new file mode 100644 index 000000000000..52eb91f2eb2a --- /dev/null +++ b/drivers/usb/serial/usb-serial-simple.c @@ -0,0 +1,110 @@ +/* + * USB Serial "Simple" driver + * + * Copyright (C) 2001-2006,2008,2013 Greg Kroah-Hartman <greg@kroah.com> + * Copyright (C) 2005 Arthur Huillet (ahuillet@users.sf.net) + * Copyright (C) 2005 Thomas Hergenhahn <thomas.hergenhahn@suse.de> + * Copyright (C) 2009 Outpost Embedded, LLC + * Copyright (C) 2010 Zilogic Systems <code@zilogic.com> + * Copyright (C) 2013 Wei Shuai <cpuwolf@gmail.com> + * Copyright (C) 2013 Linux Foundation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/tty.h> +#include <linux/module.h> +#include <linux/usb.h> +#include <linux/usb/serial.h> + +#define DEVICE(vendor, IDS) \ +static const struct usb_device_id vendor##_id_table[] = { \ + IDS(), \ + { }, \ +}; \ +static struct usb_serial_driver vendor##_device = { \ + .driver = { \ + .owner = THIS_MODULE, \ + .name = #vendor, \ + }, \ + .id_table = vendor##_id_table, \ + .num_ports = 1, \ +}; + + +/* ZIO Motherboard USB driver */ +#define ZIO_IDS() \ + { USB_DEVICE(0x1CBE, 0x0103) } +DEVICE(zio, ZIO_IDS); + +/* Funsoft Serial USB driver */ +#define FUNSOFT_IDS() \ + { USB_DEVICE(0x1404, 0xcddc) } +DEVICE(funsoft, FUNSOFT_IDS); + +/* Infineon Flashloader driver */ +#define FLASHLOADER_IDS() \ + { USB_DEVICE(0x8087, 0x0716) } +DEVICE(flashloader, FLASHLOADER_IDS); + +/* ViVOpay USB Serial Driver */ +#define VIVOPAY_IDS() \ + { USB_DEVICE(0x1d5f, 0x1004) } /* ViVOpay 8800 */ +DEVICE(vivopay, VIVOPAY_IDS); + +/* Motorola USB Phone driver */ +#define MOTO_IDS() \ + { USB_DEVICE(0x05c6, 0x3197) }, /* unknown Motorola phone */ \ + { USB_DEVICE(0x0c44, 0x0022) }, /* unknown Mororola phone */ \ + { USB_DEVICE(0x22b8, 0x2a64) }, /* Motorola KRZR K1m */ \ + { USB_DEVICE(0x22b8, 0x2c84) }, /* Motorola VE240 phone */ \ + { USB_DEVICE(0x22b8, 0x2c64) } /* Motorola V950 phone */ +DEVICE(moto_modem, MOTO_IDS); + +/* HP4x (48/49) Generic Serial driver */ +#define HP4X_IDS() \ + { USB_DEVICE(0x03f0, 0x0121) } +DEVICE(hp4x, HP4X_IDS); + +/* Suunto ANT+ USB Driver */ +#define SUUNTO_IDS() \ + { USB_DEVICE(0x0fcf, 0x1008) } +DEVICE(suunto, SUUNTO_IDS); + +/* Siemens USB/MPI adapter */ +#define SIEMENS_IDS() \ + { USB_DEVICE(0x908, 0x0004) } +DEVICE(siemens_mpi, SIEMENS_IDS); + +/* All of the above structures mushed into two lists */ +static struct usb_serial_driver * const serial_drivers[] = { + &zio_device, + &funsoft_device, + &flashloader_device, + &vivopay_device, + &moto_modem_device, + &hp4x_device, + &suunto_device, + &siemens_mpi_device, + NULL +}; + +static const struct usb_device_id id_table[] = { + ZIO_IDS(), + FUNSOFT_IDS(), + FLASHLOADER_IDS(), + VIVOPAY_IDS(), + MOTO_IDS(), + HP4X_IDS(), + SUUNTO_IDS(), + SIEMENS_IDS(), + { }, +}; +MODULE_DEVICE_TABLE(usb, id_table); + +module_usb_serial_driver(serial_drivers, id_table); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 4753c005cfb6..6091bd5a1f4f 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -37,11 +37,15 @@ #include <linux/usb.h> #include <linux/usb/serial.h> #include <linux/kfifo.h> +#include <linux/idr.h> #include "pl2303.h" #define DRIVER_AUTHOR "Greg Kroah-Hartman <gregkh@linuxfoundation.org>" #define DRIVER_DESC "USB Serial Driver core" +#define USB_SERIAL_TTY_MAJOR 188 +#define USB_SERIAL_TTY_MINORS 512 /* should be enough for a while */ + /* There is no MODULE_DEVICE_TABLE for usbserial.c. Instead the MODULE_DEVICE_TABLE declarations in each serial driver cause the "hotplug" program to pull in whatever module is necessary @@ -49,81 +53,75 @@ drivers depend on it. */ -static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; +static DEFINE_IDR(serial_minors); static DEFINE_MUTEX(table_lock); static LIST_HEAD(usb_serial_driver_list); /* - * Look up the serial structure. If it is found and it hasn't been - * disconnected, return with its disc_mutex held and its refcount - * incremented. Otherwise return NULL. + * Look up the serial port structure. If it is found and it hasn't been + * disconnected, return with the parent usb_serial structure's disc_mutex held + * and its refcount incremented. Otherwise return NULL. */ -struct usb_serial *usb_serial_get_by_index(unsigned index) +struct usb_serial_port *usb_serial_port_get_by_minor(unsigned minor) { struct usb_serial *serial; + struct usb_serial_port *port; mutex_lock(&table_lock); - serial = serial_table[index]; - - if (serial) { - mutex_lock(&serial->disc_mutex); - if (serial->disconnected) { - mutex_unlock(&serial->disc_mutex); - serial = NULL; - } else { - kref_get(&serial->kref); - } + port = idr_find(&serial_minors, minor); + if (!port) + goto exit; + + serial = port->serial; + mutex_lock(&serial->disc_mutex); + if (serial->disconnected) { + mutex_unlock(&serial->disc_mutex); + port = NULL; + } else { + kref_get(&serial->kref); } +exit: mutex_unlock(&table_lock); - return serial; + return port; } -static struct usb_serial *get_free_serial(struct usb_serial *serial, - int num_ports, unsigned int *minor) +static int allocate_minors(struct usb_serial *serial, int num_ports) { + struct usb_serial_port *port; unsigned int i, j; - int good_spot; + int minor; dev_dbg(&serial->interface->dev, "%s %d\n", __func__, num_ports); - *minor = 0; mutex_lock(&table_lock); - for (i = 0; i < SERIAL_TTY_MINORS; ++i) { - if (serial_table[i]) - continue; - - good_spot = 1; - for (j = 1; j <= num_ports-1; ++j) - if ((i+j >= SERIAL_TTY_MINORS) || (serial_table[i+j])) { - good_spot = 0; - i += j; - break; - } - if (good_spot == 0) - continue; - - *minor = i; - j = 0; - dev_dbg(&serial->interface->dev, "%s - minor base = %d\n", __func__, *minor); - for (i = *minor; (i < (*minor + num_ports)) && (i < SERIAL_TTY_MINORS); ++i) { - serial_table[i] = serial; - serial->port[j++]->number = i; - } - mutex_unlock(&table_lock); - return serial; + for (i = 0; i < num_ports; ++i) { + port = serial->port[i]; + minor = idr_alloc(&serial_minors, port, 0, 0, GFP_KERNEL); + if (minor < 0) + goto error; + port->minor = minor; + port->port_number = i; } + serial->minors_reserved = 1; mutex_unlock(&table_lock); - return NULL; + return 0; +error: + /* unwind the already allocated minors */ + for (j = 0; j < i; ++j) + idr_remove(&serial_minors, serial->port[j]->minor); + mutex_unlock(&table_lock); + return minor; } -static void return_serial(struct usb_serial *serial) +static void release_minors(struct usb_serial *serial) { int i; mutex_lock(&table_lock); for (i = 0; i < serial->num_ports; ++i) - serial_table[serial->minor + i] = NULL; + idr_remove(&serial_minors, serial->port[i]->minor); mutex_unlock(&table_lock); + serial->minors_reserved = 0; } static void destroy_serial(struct kref *kref) @@ -135,8 +133,8 @@ static void destroy_serial(struct kref *kref) serial = to_usb_serial(kref); /* return the minor range that this device had */ - if (serial->minor != SERIAL_TTY_NO_MINOR) - return_serial(serial); + if (serial->minors_reserved) + release_minors(serial); if (serial->attached && serial->type->release) serial->type->release(serial); @@ -185,13 +183,11 @@ static int serial_install(struct tty_driver *driver, struct tty_struct *tty) struct usb_serial_port *port; int retval = -ENODEV; - serial = usb_serial_get_by_index(idx); - if (!serial) + port = usb_serial_port_get_by_minor(idx); + if (!port) return retval; - port = serial->port[idx - serial->minor]; - if (!port) - goto error_no_port; + serial = port->serial; if (!try_module_get(serial->type->driver.owner)) goto error_module_get; @@ -218,7 +214,6 @@ static int serial_install(struct tty_driver *driver, struct tty_struct *tty) error_get_interface: module_put(serial->type->driver.owner); error_module_get: - error_no_port: usb_serial_put(serial); mutex_unlock(&serial->disc_mutex); return retval; @@ -408,7 +403,7 @@ static int serial_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct usb_serial_port *port = tty->driver_data; - int retval = -ENODEV; + int retval = -ENOIOCTLCMD; dev_dbg(tty->dev, "%s - cmd 0x%.4x\n", __func__, cmd); @@ -420,8 +415,6 @@ static int serial_ioctl(struct tty_struct *tty, default: if (port->serial->type->ioctl) retval = port->serial->type->ioctl(tty, cmd, arg); - else - retval = -ENOIOCTLCMD; } return retval; @@ -454,14 +447,16 @@ static int serial_break(struct tty_struct *tty, int break_state) static int serial_proc_show(struct seq_file *m, void *v) { struct usb_serial *serial; + struct usb_serial_port *port; int i; char tmp[40]; seq_puts(m, "usbserinfo:1.0 driver:2.0\n"); - for (i = 0; i < SERIAL_TTY_MINORS; ++i) { - serial = usb_serial_get_by_index(i); - if (serial == NULL) + for (i = 0; i < USB_SERIAL_TTY_MINORS; ++i) { + port = usb_serial_port_get_by_minor(i); + if (port == NULL) continue; + serial = port->serial; seq_printf(m, "%d:", i); if (serial->type->driver.owner) @@ -473,7 +468,7 @@ static int serial_proc_show(struct seq_file *m, void *v) le16_to_cpu(serial->dev->descriptor.idVendor), le16_to_cpu(serial->dev->descriptor.idProduct)); seq_printf(m, " num_ports:%d", serial->num_ports); - seq_printf(m, " port:%d", i - serial->minor + 1); + seq_printf(m, " port:%d", port->port_number); usb_make_path(serial->dev, tmp, sizeof(tmp)); seq_printf(m, " path:%s", tmp); @@ -615,7 +610,7 @@ static struct usb_serial *create_serial(struct usb_device *dev, serial->interface = usb_get_intf(interface); kref_init(&serial->kref); mutex_init(&serial->disc_mutex); - serial->minor = SERIAL_TTY_NO_MINOR; + serial->minors_reserved = 0; return serial; } @@ -686,20 +681,10 @@ static int serial_port_carrier_raised(struct tty_port *port) static void serial_port_dtr_rts(struct tty_port *port, int on) { struct usb_serial_port *p = container_of(port, struct usb_serial_port, port); - struct usb_serial *serial = p->serial; - struct usb_serial_driver *drv = serial->type; + struct usb_serial_driver *drv = p->serial->type; - if (!drv->dtr_rts) - return; - /* - * Work-around bug in the tty-layer which can result in dtr_rts - * being called after a disconnect (and tty_unregister_device - * has returned). Remove once bug has been squashed. - */ - mutex_lock(&serial->disc_mutex); - if (!serial->disconnected) + if (drv->dtr_rts) drv->dtr_rts(p, on); - mutex_unlock(&serial->disc_mutex); } static const struct tty_port_operations serial_port_ops = { @@ -724,7 +709,6 @@ static int usb_serial_probe(struct usb_interface *interface, struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS]; struct usb_serial_driver *type = NULL; int retval; - unsigned int minor; int buffer_size; int i; int j; @@ -1041,16 +1025,15 @@ static int usb_serial_probe(struct usb_interface *interface, */ serial->disconnected = 1; - if (get_free_serial(serial, num_ports, &minor) == NULL) { - dev_err(ddev, "No more free serial devices\n"); + if (allocate_minors(serial, num_ports)) { + dev_err(ddev, "No more free serial minor numbers\n"); goto probe_error; } - serial->minor = minor; /* register all of the individual ports with the driver core */ for (i = 0; i < num_ports; ++i) { port = serial->port[i]; - dev_set_name(&port->dev, "ttyUSB%d", port->number); + dev_set_name(&port->dev, "ttyUSB%d", port->minor); dev_dbg(ddev, "registering %s", dev_name(&port->dev)); device_enable_async_suspend(&port->dev); @@ -1061,7 +1044,7 @@ static int usb_serial_probe(struct usb_interface *interface, serial->disconnected = 0; - usb_serial_console_init(minor); + usb_serial_console_init(serial->port[0]->minor); exit: module_put(type->driver.owner); return 0; @@ -1225,17 +1208,13 @@ static struct usb_driver usb_serial_driver = { static int __init usb_serial_init(void) { - int i; int result; - usb_serial_tty_driver = alloc_tty_driver(SERIAL_TTY_MINORS); + usb_serial_tty_driver = alloc_tty_driver(USB_SERIAL_TTY_MINORS); if (!usb_serial_tty_driver) return -ENOMEM; /* Initialize our global data */ - for (i = 0; i < SERIAL_TTY_MINORS; ++i) - serial_table[i] = NULL; - result = bus_register(&usb_serial_bus_type); if (result) { pr_err("%s - registering bus driver failed\n", __func__); @@ -1244,7 +1223,7 @@ static int __init usb_serial_init(void) usb_serial_tty_driver->driver_name = "usbserial"; usb_serial_tty_driver->name = "ttyUSB"; - usb_serial_tty_driver->major = SERIAL_TTY_MAJOR; + usb_serial_tty_driver->major = USB_SERIAL_TTY_MAJOR; usb_serial_tty_driver->minor_start = 0; usb_serial_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; usb_serial_tty_driver->subtype = SERIAL_TYPE_NORMAL; diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index ece326ef63a0..85365784040b 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -124,8 +124,8 @@ static int get_serial_info(struct usb_serial_port *port, return -EFAULT; memset(&tmp, 0, sizeof(tmp)); - tmp.line = port->serial->minor; - tmp.port = port->number; + tmp.line = port->minor; + tmp.port = port->port_number; tmp.baud_base = tty_get_baud_rate(port->port.tty); tmp.close_delay = port->port.close_delay / 10; tmp.closing_wait = port->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? @@ -291,18 +291,18 @@ static void usb_wwan_indat_callback(struct urb *urb) tty_flip_buffer_push(&port->port); } else dev_dbg(dev, "%s: empty read urb received\n", __func__); - - /* Resubmit urb so we continue receiving */ - err = usb_submit_urb(urb, GFP_ATOMIC); - if (err) { - if (err != -EPERM) { - dev_err(dev, "%s: resubmit read urb failed. (%d)\n", __func__, err); - /* busy also in error unless we are killed */ - usb_mark_last_busy(port->serial->dev); - } - } else { + } + /* Resubmit urb so we continue receiving */ + err = usb_submit_urb(urb, GFP_ATOMIC); + if (err) { + if (err != -EPERM) { + dev_err(dev, "%s: resubmit read urb failed. (%d)\n", + __func__, err); + /* busy also in error unless we are killed */ usb_mark_last_busy(port->serial->dev); } + } else { + usb_mark_last_busy(port->serial->dev); } } diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 7573ec8a084f..9910aa2edf4b 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -560,10 +560,19 @@ static int treo_attach(struct usb_serial *serial) */ #define COPY_PORT(dest, src) \ do { \ + int i; \ + \ + for (i = 0; i < ARRAY_SIZE(src->read_urbs); ++i) { \ + dest->read_urbs[i] = src->read_urbs[i]; \ + dest->read_urbs[i]->context = dest; \ + dest->bulk_in_buffers[i] = src->bulk_in_buffers[i]; \ + } \ dest->read_urb = src->read_urb; \ dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\ dest->bulk_in_buffer = src->bulk_in_buffer; \ + dest->bulk_in_size = src->bulk_in_size; \ dest->interrupt_in_urb = src->interrupt_in_urb; \ + dest->interrupt_in_urb->context = dest; \ dest->interrupt_in_endpointAddress = \ src->interrupt_in_endpointAddress;\ dest->interrupt_in_buffer = src->interrupt_in_buffer; \ diff --git a/drivers/usb/serial/vivopay-serial.c b/drivers/usb/serial/vivopay-serial.c deleted file mode 100644 index 6299526ff8c3..000000000000 --- a/drivers/usb/serial/vivopay-serial.c +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Copyright (C) 2001-2005 Greg Kroah-Hartman (greg@kroah.com) - * Copyright (C) 2009 Outpost Embedded, LLC - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/tty.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <linux/usb/serial.h> - -#define DRIVER_DESC "ViVOpay USB Serial Driver" - -#define VIVOPAY_VENDOR_ID 0x1d5f - - -static struct usb_device_id id_table [] = { - /* ViVOpay 8800 */ - { USB_DEVICE(VIVOPAY_VENDOR_ID, 0x1004) }, - { }, -}; - -MODULE_DEVICE_TABLE(usb, id_table); - -static struct usb_serial_driver vivopay_serial_device = { - .driver = { - .owner = THIS_MODULE, - .name = "vivopay-serial", - }, - .id_table = id_table, - .num_ports = 1, -}; - -static struct usb_serial_driver * const serial_drivers[] = { - &vivopay_serial_device, NULL -}; - -module_usb_serial_driver(serial_drivers, id_table); - -MODULE_AUTHOR("Forest Bond <forest.bond@outpostembedded.com>"); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index b9fca3586d74..36a7740e827c 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -461,8 +461,8 @@ static int whiteheat_ioctl(struct tty_struct *tty, case TIOCGSERIAL: memset(&serstruct, 0, sizeof(serstruct)); serstruct.type = PORT_16654; - serstruct.line = port->serial->minor; - serstruct.port = port->number; + serstruct.line = port->minor; + serstruct.port = port->port_number; serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo); serstruct.custom_divisor = 0; @@ -626,7 +626,7 @@ static int firm_open(struct usb_serial_port *port) { struct whiteheat_simple open_command; - open_command.port = port->number - port->serial->minor + 1; + open_command.port = port->port_number + 1; return firm_send_command(port, WHITEHEAT_OPEN, (__u8 *)&open_command, sizeof(open_command)); } @@ -636,7 +636,7 @@ static int firm_close(struct usb_serial_port *port) { struct whiteheat_simple close_command; - close_command.port = port->number - port->serial->minor + 1; + close_command.port = port->port_number + 1; return firm_send_command(port, WHITEHEAT_CLOSE, (__u8 *)&close_command, sizeof(close_command)); } @@ -649,7 +649,7 @@ static void firm_setup_port(struct tty_struct *tty) struct whiteheat_port_settings port_settings; unsigned int cflag = tty->termios.c_cflag; - port_settings.port = port->number + 1; + port_settings.port = port->port_number + 1; /* get the byte size */ switch (cflag & CSIZE) { @@ -726,7 +726,7 @@ static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) { struct whiteheat_set_rdb rts_command; - rts_command.port = port->number - port->serial->minor + 1; + rts_command.port = port->port_number + 1; rts_command.state = onoff; return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&rts_command, sizeof(rts_command)); @@ -737,7 +737,7 @@ static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) { struct whiteheat_set_rdb dtr_command; - dtr_command.port = port->number - port->serial->minor + 1; + dtr_command.port = port->port_number + 1; dtr_command.state = onoff; return firm_send_command(port, WHITEHEAT_SET_DTR, (__u8 *)&dtr_command, sizeof(dtr_command)); @@ -748,7 +748,7 @@ static int firm_set_break(struct usb_serial_port *port, __u8 onoff) { struct whiteheat_set_rdb break_command; - break_command.port = port->number - port->serial->minor + 1; + break_command.port = port->port_number + 1; break_command.state = onoff; return firm_send_command(port, WHITEHEAT_SET_BREAK, (__u8 *)&break_command, sizeof(break_command)); @@ -759,7 +759,7 @@ static int firm_purge(struct usb_serial_port *port, __u8 rxtx) { struct whiteheat_purge purge_command; - purge_command.port = port->number - port->serial->minor + 1; + purge_command.port = port->port_number + 1; purge_command.what = rxtx; return firm_send_command(port, WHITEHEAT_PURGE, (__u8 *)&purge_command, sizeof(purge_command)); @@ -770,7 +770,7 @@ static int firm_get_dtr_rts(struct usb_serial_port *port) { struct whiteheat_simple get_dr_command; - get_dr_command.port = port->number - port->serial->minor + 1; + get_dr_command.port = port->port_number + 1; return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, (__u8 *)&get_dr_command, sizeof(get_dr_command)); } @@ -780,7 +780,7 @@ static int firm_report_tx_done(struct usb_serial_port *port) { struct whiteheat_simple close_command; - close_command.port = port->number - port->serial->minor + 1; + close_command.port = port->port_number + 1; return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, (__u8 *)&close_command, sizeof(close_command)); } diff --git a/drivers/usb/serial/zio.c b/drivers/usb/serial/zio.c deleted file mode 100644 index c043aa84a0ba..000000000000 --- a/drivers/usb/serial/zio.c +++ /dev/null @@ -1,39 +0,0 @@ -/* - * ZIO Motherboard USB driver - * - * Copyright (C) 2010 Zilogic Systems <code@zilogic.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/tty.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <linux/usb/serial.h> -#include <linux/uaccess.h> - -static const struct usb_device_id id_table[] = { - { USB_DEVICE(0x1CBE, 0x0103) }, - { }, -}; -MODULE_DEVICE_TABLE(usb, id_table); - -static struct usb_serial_driver zio_device = { - .driver = { - .owner = THIS_MODULE, - .name = "zio", - }, - .id_table = id_table, - .num_ports = 1, -}; - -static struct usb_serial_driver * const serial_drivers[] = { - &zio_device, NULL -}; - -module_usb_serial_driver(serial_drivers, id_table); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/serial/zte_ev.c b/drivers/usb/serial/zte_ev.c index 39ee7373b4ee..fca4c752a4ed 100644 --- a/drivers/usb/serial/zte_ev.c +++ b/drivers/usb/serial/zte_ev.c @@ -41,9 +41,6 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, int len; unsigned char *buf; - if (port->number != 0) - return -ENODEV; - buf = kmalloc(MAX_SETUP_DATA_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; @@ -53,7 +50,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0001, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 2st cmd and recieve data */ @@ -65,7 +62,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 3 cmd */ @@ -84,7 +81,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 4 cmd */ @@ -95,7 +92,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 5 cmd */ @@ -107,7 +104,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 6 cmd */ @@ -126,7 +123,7 @@ static int zte_ev_usb_serial_open(struct tty_struct *tty, result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); kfree(buf); @@ -166,9 +163,6 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) int len; unsigned char *buf; - if (port->number != 0) - return; - buf = kmalloc(MAX_SETUP_DATA_SIZE, GFP_KERNEL); if (!buf) return; @@ -178,7 +172,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0002, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 2st ctl cmd(CTL 21 22 03 00 00 00 00 00 ) */ @@ -186,7 +180,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 3st cmd and recieve data */ @@ -198,7 +192,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 4 cmd */ @@ -217,7 +211,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 5 cmd */ @@ -228,7 +222,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 6 cmd */ @@ -240,7 +234,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 7 cmd */ @@ -259,7 +253,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 8 cmd */ @@ -270,7 +264,7 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, - HZ * USB_CTRL_GET_TIMEOUT); + USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); kfree(buf); @@ -279,11 +273,29 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) } static const struct usb_device_id id_table[] = { - { USB_DEVICE(0x19d2, 0xffff) }, /* AC8700 */ - { USB_DEVICE(0x19d2, 0xfffe) }, - { USB_DEVICE(0x19d2, 0xfffd) }, /* MG880 */ + /* AC8710, AC8710T */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffff, 0xff, 0xff, 0xff) }, + /* AC8700 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xfffe, 0xff, 0xff, 0xff) }, + /* MG880 */ + { USB_DEVICE(0x19d2, 0xfffd) }, + { USB_DEVICE(0x19d2, 0xfffc) }, + { USB_DEVICE(0x19d2, 0xfffb) }, + /* AC2726, AC8710_V3 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xfff1, 0xff, 0xff, 0xff) }, + { USB_DEVICE(0x19d2, 0xfff6) }, + { USB_DEVICE(0x19d2, 0xfff7) }, + { USB_DEVICE(0x19d2, 0xfff8) }, + { USB_DEVICE(0x19d2, 0xfff9) }, + { USB_DEVICE(0x19d2, 0xffee) }, + /* AC2716, MC2716 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffed, 0xff, 0xff, 0xff) }, + /* AD3812 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffeb, 0xff, 0xff, 0xff) }, + { USB_DEVICE(0x19d2, 0xffec) }, { USB_DEVICE(0x05C6, 0x3197) }, { USB_DEVICE(0x05C6, 0x6000) }, + { USB_DEVICE(0x05C6, 0x9008) }, { }, }; MODULE_DEVICE_TABLE(usb, id_table); diff --git a/drivers/usb/storage/alauda.c b/drivers/usb/storage/alauda.c index 77a2ddfe6487..6636a583da12 100644 --- a/drivers/usb/storage/alauda.c +++ b/drivers/usb/storage/alauda.c @@ -249,11 +249,7 @@ static void nand_init_ecc(void) { /* compute 3-byte ecc on 256 bytes */ static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) { int i, j, a; - unsigned char par, bit, bits[8]; - - par = 0; - for (j = 0; j < 8; j++) - bits[j] = 0; + unsigned char par = 0, bit, bits[8] = {0}; /* collect 16 checksum bits */ for (i = 0; i < 256; i++) { diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 92b05d95ec5e..94d75edef77f 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -496,7 +496,7 @@ US_DO_ALL_FLAGS ***********************************************************************/ /* Output routine for the sysfs max_sectors file */ -static ssize_t show_max_sectors(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t max_sectors_show(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); @@ -504,7 +504,7 @@ static ssize_t show_max_sectors(struct device *dev, struct device_attribute *att } /* Input routine for the sysfs max_sectors file */ -static ssize_t store_max_sectors(struct device *dev, struct device_attribute *attr, const char *buf, +static ssize_t max_sectors_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct scsi_device *sdev = to_scsi_device(dev); @@ -514,16 +514,14 @@ static ssize_t store_max_sectors(struct device *dev, struct device_attribute *at blk_queue_max_hw_sectors(sdev->request_queue, ms); return count; } - return -EINVAL; + return -EINVAL; } - -static DEVICE_ATTR(max_sectors, S_IRUGO | S_IWUSR, show_max_sectors, - store_max_sectors); +static DEVICE_ATTR_RW(max_sectors); static struct device_attribute *sysfs_device_attr_list[] = { - &dev_attr_max_sectors, - NULL, - }; + &dev_attr_max_sectors, + NULL, +}; /* * this defines our host template, with which we'll allocate hosts diff --git a/drivers/usb/storage/sddr09.c b/drivers/usb/storage/sddr09.c index 732027f33200..073a2c32ccc4 100644 --- a/drivers/usb/storage/sddr09.c +++ b/drivers/usb/storage/sddr09.c @@ -219,11 +219,7 @@ static void nand_init_ecc(void) { /* compute 3-byte ecc on 256 bytes */ static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) { int i, j, a; - unsigned char par, bit, bits[8]; - - par = 0; - for (j = 0; j < 8; j++) - bits[j] = 0; + unsigned char par = 0, bit, bits[8] = {0}; /* collect 16 checksum bits */ for (i = 0; i < 256; i++) { diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 1799335288bd..c015f2c16729 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -665,6 +665,13 @@ UNUSUAL_DEV( 0x054c, 0x016a, 0x0000, 0x9999, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_FIX_INQUIRY ), +/* Submitted by Ren Bigcren <bigcren.ren@sonymobile.com> */ +UNUSUAL_DEV( 0x054c, 0x02a5, 0x0100, 0x0100, + "Sony Corp.", + "MicroVault Flash Drive", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_NO_READ_CAPACITY_16 ), + /* floppy reports multiple luns */ UNUSUAL_DEV( 0x055d, 0x2020, 0x0000, 0x0210, "SAMSUNG", diff --git a/drivers/usb/usb-common.c b/drivers/usb/usb-common.c index 0db0a919d72b..d771870a819e 100644 --- a/drivers/usb/usb-common.c +++ b/drivers/usb/usb-common.c @@ -13,7 +13,9 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/of.h> #include <linux/usb/ch9.h> +#include <linux/usb/of.h> #include <linux/usb/otg.h> const char *usb_otg_state_string(enum usb_otg_state state) @@ -41,20 +43,20 @@ const char *usb_otg_state_string(enum usb_otg_state state) } EXPORT_SYMBOL_GPL(usb_otg_state_string); +static const char *const speed_names[] = { + [USB_SPEED_UNKNOWN] = "UNKNOWN", + [USB_SPEED_LOW] = "low-speed", + [USB_SPEED_FULL] = "full-speed", + [USB_SPEED_HIGH] = "high-speed", + [USB_SPEED_WIRELESS] = "wireless", + [USB_SPEED_SUPER] = "super-speed", +}; + const char *usb_speed_string(enum usb_device_speed speed) { - static const char *const names[] = { - [USB_SPEED_UNKNOWN] = "UNKNOWN", - [USB_SPEED_LOW] = "low-speed", - [USB_SPEED_FULL] = "full-speed", - [USB_SPEED_HIGH] = "high-speed", - [USB_SPEED_WIRELESS] = "wireless", - [USB_SPEED_SUPER] = "super-speed", - }; - - if (speed < 0 || speed >= ARRAY_SIZE(names)) + if (speed < 0 || speed >= ARRAY_SIZE(speed_names)) speed = USB_SPEED_UNKNOWN; - return names[speed]; + return speed_names[speed]; } EXPORT_SYMBOL_GPL(usb_speed_string); @@ -79,4 +81,64 @@ const char *usb_state_string(enum usb_device_state state) } EXPORT_SYMBOL_GPL(usb_state_string); +#ifdef CONFIG_OF +static const char *const usb_dr_modes[] = { + [USB_DR_MODE_UNKNOWN] = "", + [USB_DR_MODE_HOST] = "host", + [USB_DR_MODE_PERIPHERAL] = "peripheral", + [USB_DR_MODE_OTG] = "otg", +}; + +/** + * of_usb_get_dr_mode - Get dual role mode for given device_node + * @np: Pointer to the given device_node + * + * The function gets phy interface string from property 'dr_mode', + * and returns the correspondig enum usb_dr_mode + */ +enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np) +{ + const char *dr_mode; + int err, i; + + err = of_property_read_string(np, "dr_mode", &dr_mode); + if (err < 0) + return USB_DR_MODE_UNKNOWN; + + for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++) + if (!strcmp(dr_mode, usb_dr_modes[i])) + return i; + + return USB_DR_MODE_UNKNOWN; +} +EXPORT_SYMBOL_GPL(of_usb_get_dr_mode); + +/** + * of_usb_get_maximum_speed - Get maximum requested speed for a given USB + * controller. + * @np: Pointer to the given device_node + * + * The function gets the maximum speed string from property "maximum-speed", + * and returns the corresponding enum usb_device_speed. + */ +enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np) +{ + const char *maximum_speed; + int err; + int i; + + err = of_property_read_string(np, "maximum-speed", &maximum_speed); + if (err < 0) + return USB_SPEED_UNKNOWN; + + for (i = 0; i < ARRAY_SIZE(speed_names); i++) + if (strcmp(maximum_speed, speed_names[i]) == 0) + return i; + + return USB_SPEED_UNKNOWN; +} +EXPORT_SYMBOL_GPL(of_usb_get_maximum_speed); + +#endif + MODULE_LICENSE("GPL"); diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index 7ed3b039dbe8..ff97652343a3 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -325,9 +325,8 @@ retry: rv = skel_do_read_io(dev, count); if (rv < 0) goto exit; - else if (!(file->f_flags & O_NONBLOCK)) + else goto retry; - rv = -EAGAIN; } exit: mutex_unlock(&dev->io_mutex); diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c index 1d365316960c..33a12788f9ca 100644 --- a/drivers/usb/wusbcore/devconnect.c +++ b/drivers/usb/wusbcore/devconnect.c @@ -455,8 +455,8 @@ static void __wusbhc_keep_alive(struct wusbhc *wusbhc) dev_err(dev, "KEEPALIVE: device %u timed out\n", wusb_dev->addr); __wusbhc_dev_disconnect(wusbhc, wusb_port); - } else if (time_after(jiffies, wusb_dev->entry_ts + tt/2)) { - /* Approaching timeout cut out, need to refresh */ + } else if (time_after(jiffies, wusb_dev->entry_ts + tt/3)) { + /* Approaching timeout cut off, need to refresh */ ie->bDeviceAddress[keep_alives++] = wusb_dev->addr; } } @@ -1062,7 +1062,7 @@ int wusbhc_devconnect_start(struct wusbhc *wusbhc) wusbhc->wuie_host_info = hi; queue_delayed_work(wusbd, &wusbhc->keep_alive_timer, - (wusbhc->trust_timeout*CONFIG_HZ)/1000/2); + msecs_to_jiffies(wusbhc->trust_timeout / 2)); return 0; diff --git a/drivers/usb/wusbcore/mmc.c b/drivers/usb/wusbcore/mmc.c index b8c72583c040..b71760c8d3ad 100644 --- a/drivers/usb/wusbcore/mmc.c +++ b/drivers/usb/wusbcore/mmc.c @@ -195,6 +195,7 @@ int wusbhc_start(struct wusbhc *wusbhc) struct device *dev = wusbhc->dev; WARN_ON(wusbhc->wuie_host_info != NULL); + BUG_ON(wusbhc->uwb_rc == NULL); result = wusbhc_rsv_establish(wusbhc); if (result < 0) { @@ -214,9 +215,9 @@ int wusbhc_start(struct wusbhc *wusbhc) dev_err(dev, "error starting security in the HC: %d\n", result); goto error_sec_start; } - /* FIXME: the choice of the DNTS parameters is somewhat - * arbitrary */ - result = wusbhc->set_num_dnts(wusbhc, 0, 15); + + result = wusbhc->set_num_dnts(wusbhc, wusbhc->dnts_interval, + wusbhc->dnts_num_slots); if (result < 0) { dev_err(dev, "Cannot set DNTS parameters: %d\n", result); goto error_set_num_dnts; @@ -276,12 +277,38 @@ int wusbhc_chid_set(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid) } wusbhc->chid = *chid; } + + /* register with UWB if we haven't already since we are about to start + the radio. */ + if ((chid) && (wusbhc->uwb_rc == NULL)) { + wusbhc->uwb_rc = uwb_rc_get_by_grandpa(wusbhc->dev->parent); + if (wusbhc->uwb_rc == NULL) { + result = -ENODEV; + dev_err(wusbhc->dev, "Cannot get associated UWB Host Controller\n"); + goto error_rc_get; + } + + result = wusbhc_pal_register(wusbhc); + if (result < 0) { + dev_err(wusbhc->dev, "Cannot register as a UWB PAL\n"); + goto error_pal_register; + } + } mutex_unlock(&wusbhc->mutex); if (chid) result = uwb_radio_start(&wusbhc->pal); else uwb_radio_stop(&wusbhc->pal); + + return result; + +error_pal_register: + uwb_rc_put(wusbhc->uwb_rc); + wusbhc->uwb_rc = NULL; +error_rc_get: + mutex_unlock(&wusbhc->mutex); + return result; } EXPORT_SYMBOL_GPL(wusbhc_chid_set); diff --git a/drivers/usb/wusbcore/pal.c b/drivers/usb/wusbcore/pal.c index d0b172c5ecc7..59e100c2eb50 100644 --- a/drivers/usb/wusbcore/pal.c +++ b/drivers/usb/wusbcore/pal.c @@ -45,10 +45,11 @@ int wusbhc_pal_register(struct wusbhc *wusbhc) } /** - * wusbhc_pal_register - unregister the WUSB HC as a UWB PAL + * wusbhc_pal_unregister - unregister the WUSB HC as a UWB PAL * @wusbhc: the WUSB HC */ void wusbhc_pal_unregister(struct wusbhc *wusbhc) { - uwb_pal_unregister(&wusbhc->pal); + if (wusbhc->uwb_rc) + uwb_pal_unregister(&wusbhc->pal); } diff --git a/drivers/usb/wusbcore/reservation.c b/drivers/usb/wusbcore/reservation.c index 6f4fafdc2401..ead79f793927 100644 --- a/drivers/usb/wusbcore/reservation.c +++ b/drivers/usb/wusbcore/reservation.c @@ -80,6 +80,9 @@ int wusbhc_rsv_establish(struct wusbhc *wusbhc) struct uwb_dev_addr bcid; int ret; + if (rc == NULL) + return -ENODEV; + rsv = uwb_rsv_create(rc, wusbhc_rsv_complete_cb, wusbhc); if (rsv == NULL) return -ENOMEM; diff --git a/drivers/usb/wusbcore/rh.c b/drivers/usb/wusbcore/rh.c index 59ff254dfb6f..fe8bc777ab88 100644 --- a/drivers/usb/wusbcore/rh.c +++ b/drivers/usb/wusbcore/rh.c @@ -141,18 +141,26 @@ static int wusbhc_rh_port_reset(struct wusbhc *wusbhc, u8 port_idx) int wusbhc_rh_status_data(struct usb_hcd *usb_hcd, char *_buf) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); - size_t cnt, size; - unsigned long *buf = (unsigned long *) _buf; + size_t cnt, size, bits_set = 0; /* WE DON'T LOCK, see comment */ - size = wusbhc->ports_max + 1 /* hub bit */; - size = (size + 8 - 1) / 8; /* round to bytes */ - for (cnt = 0; cnt < wusbhc->ports_max; cnt++) - if (wusb_port_by_idx(wusbhc, cnt)->change) - set_bit(cnt + 1, buf); - else - clear_bit(cnt + 1, buf); - return size; + /* round up to bytes. Hub bit is bit 0 so add 1. */ + size = DIV_ROUND_UP(wusbhc->ports_max + 1, 8); + + /* clear the output buffer. */ + memset(_buf, 0, size); + /* set the bit for each changed port. */ + for (cnt = 0; cnt < wusbhc->ports_max; cnt++) { + + if (wusb_port_by_idx(wusbhc, cnt)->change) { + const int bitpos = cnt+1; + + _buf[bitpos/8] |= (1 << (bitpos % 8)); + bits_set++; + } + } + + return bits_set ? size : 0; } EXPORT_SYMBOL_GPL(wusbhc_rh_status_data); @@ -393,26 +401,6 @@ int wusbhc_rh_control(struct usb_hcd *usb_hcd, u16 reqntype, u16 wValue, } EXPORT_SYMBOL_GPL(wusbhc_rh_control); -int wusbhc_rh_suspend(struct usb_hcd *usb_hcd) -{ - struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); - dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__, - usb_hcd, wusbhc); - /* dump_stack(); */ - return -ENOSYS; -} -EXPORT_SYMBOL_GPL(wusbhc_rh_suspend); - -int wusbhc_rh_resume(struct usb_hcd *usb_hcd) -{ - struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); - dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__, - usb_hcd, wusbhc); - /* dump_stack(); */ - return -ENOSYS; -} -EXPORT_SYMBOL_GPL(wusbhc_rh_resume); - int wusbhc_rh_start_port_reset(struct usb_hcd *usb_hcd, unsigned port_idx) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h index d6bea3e0b54a..cf250c21e946 100644 --- a/drivers/usb/wusbcore/wa-hc.h +++ b/drivers/usb/wusbcore/wa-hc.h @@ -91,6 +91,7 @@ struct wusbhc; struct wahc; extern void wa_urb_enqueue_run(struct work_struct *ws); +extern void wa_process_errored_transfers_run(struct work_struct *ws); /** * RPipe instance @@ -190,8 +191,14 @@ struct wahc { struct list_head xfer_list; struct list_head xfer_delayed_list; + struct list_head xfer_errored_list; + /* + * lock for the above xfer lists. Can be taken while a xfer->lock is + * held but not in the reverse order. + */ spinlock_t xfer_list_lock; - struct work_struct xfer_work; + struct work_struct xfer_enqueue_work; + struct work_struct xfer_error_work; atomic_t xfer_id_count; }; @@ -244,8 +251,10 @@ static inline void wa_init(struct wahc *wa) edc_init(&wa->dti_edc); INIT_LIST_HEAD(&wa->xfer_list); INIT_LIST_HEAD(&wa->xfer_delayed_list); + INIT_LIST_HEAD(&wa->xfer_errored_list); spin_lock_init(&wa->xfer_list_lock); - INIT_WORK(&wa->xfer_work, wa_urb_enqueue_run); + INIT_WORK(&wa->xfer_enqueue_work, wa_urb_enqueue_run); + INIT_WORK(&wa->xfer_error_work, wa_process_errored_transfers_run); atomic_set(&wa->xfer_id_count, 1); } @@ -269,6 +278,8 @@ static inline void rpipe_put(struct wa_rpipe *rpipe) } extern void rpipe_ep_disable(struct wahc *, struct usb_host_endpoint *); +extern void rpipe_clear_feature_stalled(struct wahc *, + struct usb_host_endpoint *); extern int wa_rpipes_create(struct wahc *); extern void wa_rpipes_destroy(struct wahc *); static inline void rpipe_avail_dec(struct wa_rpipe *rpipe) diff --git a/drivers/usb/wusbcore/wa-nep.c b/drivers/usb/wusbcore/wa-nep.c index f67f7f1e6df9..ada4e0870623 100644 --- a/drivers/usb/wusbcore/wa-nep.c +++ b/drivers/usb/wusbcore/wa-nep.c @@ -134,9 +134,10 @@ static void wa_notif_dispatch(struct work_struct *ws) case WA_NOTIF_TRANSFER: wa_handle_notif_xfer(wa, notif_hdr); break; + case HWA_NOTIF_BPST_ADJ: + break; /* no action needed for BPST ADJ. */ case DWA_NOTIF_RWAKE: case DWA_NOTIF_PORTSTATUS: - case HWA_NOTIF_BPST_ADJ: /* FIXME: unimplemented WA NOTIFs */ /* fallthru */ default: diff --git a/drivers/usb/wusbcore/wa-rpipe.c b/drivers/usb/wusbcore/wa-rpipe.c index f0d546c5a089..fd4f1ce6256a 100644 --- a/drivers/usb/wusbcore/wa-rpipe.c +++ b/drivers/usb/wusbcore/wa-rpipe.c @@ -251,8 +251,8 @@ static int __rpipe_reset(struct wahc *wa, unsigned index) static struct usb_wireless_ep_comp_descriptor epc0 = { .bLength = sizeof(epc0), .bDescriptorType = USB_DT_WIRELESS_ENDPOINT_COMP, -/* .bMaxBurst = 1, */ - .bMaxSequence = 31, + .bMaxBurst = 1, + .bMaxSequence = 2, }; /* @@ -317,6 +317,7 @@ static int rpipe_aim(struct wa_rpipe *rpipe, struct wahc *wa, struct device *dev = &wa->usb_iface->dev; struct usb_device *usb_dev = urb->dev; struct usb_wireless_ep_comp_descriptor *epcd; + u32 ack_window, epcd_max_sequence; u8 unauth; epcd = rpipe_epc_find(dev, ep); @@ -333,8 +334,11 @@ static int rpipe_aim(struct wa_rpipe *rpipe, struct wahc *wa, rpipe->descr.wBlocks = cpu_to_le16(16); /* given */ /* ep0 maxpktsize is 0x200 (WUSB1.0[4.8.1]) */ rpipe->descr.wMaxPacketSize = cpu_to_le16(ep->desc.wMaxPacketSize); - rpipe->descr.bHSHubAddress = 0; /* reserved: zero */ - rpipe->descr.bHSHubPort = wusb_port_no_to_idx(urb->dev->portnum); + + rpipe->descr.hwa_bMaxBurst = max(min_t(unsigned int, + epcd->bMaxBurst, 16U), 1U); + rpipe->descr.hwa_bDeviceInfoIndex = + wusb_port_no_to_idx(urb->dev->portnum); /* FIXME: use maximum speed as supported or recommended by device */ rpipe->descr.bSpeed = usb_pipeendpoint(urb->pipe) == 0 ? UWB_PHY_RATE_53 : UWB_PHY_RATE_200; @@ -344,26 +348,26 @@ static int rpipe_aim(struct wa_rpipe *rpipe, struct wahc *wa, le16_to_cpu(rpipe->descr.wRPipeIndex), usb_pipeendpoint(urb->pipe), rpipe->descr.bSpeed); - /* see security.c:wusb_update_address() */ - if (unlikely(urb->dev->devnum == 0x80)) - rpipe->descr.bDeviceAddress = 0; - else - rpipe->descr.bDeviceAddress = urb->dev->devnum | unauth; + rpipe->descr.hwa_reserved = 0; + rpipe->descr.bEndpointAddress = ep->desc.bEndpointAddress; /* FIXME: bDataSequence */ rpipe->descr.bDataSequence = 0; - /* FIXME: dwCurrentWindow */ - rpipe->descr.dwCurrentWindow = cpu_to_le32(1); - /* FIXME: bMaxDataSequence */ - rpipe->descr.bMaxDataSequence = epcd->bMaxSequence - 1; + + /* start with base window of hwa_bMaxBurst bits starting at 0. */ + ack_window = 0xFFFFFFFF >> (32 - rpipe->descr.hwa_bMaxBurst); + rpipe->descr.dwCurrentWindow = cpu_to_le32(ack_window); + epcd_max_sequence = max(min_t(unsigned int, + epcd->bMaxSequence, 32U), 2U); + rpipe->descr.bMaxDataSequence = epcd_max_sequence - 1; rpipe->descr.bInterval = ep->desc.bInterval; /* FIXME: bOverTheAirInterval */ rpipe->descr.bOverTheAirInterval = 0; /* 0 if not isoc */ /* FIXME: xmit power & preamble blah blah */ - rpipe->descr.bmAttribute = ep->desc.bmAttributes & 0x03; + rpipe->descr.bmAttribute = (ep->desc.bmAttributes & + USB_ENDPOINT_XFERTYPE_MASK); /* rpipe->descr.bmCharacteristics RO */ - /* FIXME: bmRetryOptions */ - rpipe->descr.bmRetryOptions = 15; + rpipe->descr.bmRetryOptions = (wa->wusb->retry_count & 0xF); /* FIXME: use for assessing link quality? */ rpipe->descr.wNumTransactionErrors = 0; result = __rpipe_set_descr(wa, &rpipe->descr, @@ -387,10 +391,8 @@ static int rpipe_check_aim(const struct wa_rpipe *rpipe, const struct wahc *wa, const struct usb_host_endpoint *ep, const struct urb *urb, gfp_t gfp) { - int result = 0; /* better code for lack of companion? */ + int result = 0; struct device *dev = &wa->usb_iface->dev; - struct usb_device *usb_dev = urb->dev; - u8 unauth = (usb_dev->wusb && !usb_dev->authenticated) ? 0x80 : 0; u8 portnum = wusb_port_no_to_idx(urb->dev->portnum); #define AIM_CHECK(rdf, val, text) \ @@ -403,13 +405,10 @@ static int rpipe_check_aim(const struct wa_rpipe *rpipe, const struct wahc *wa, WARN_ON(1); \ } \ } while (0) - AIM_CHECK(wMaxPacketSize, cpu_to_le16(ep->desc.wMaxPacketSize), - "(%u vs %u)"); - AIM_CHECK(bHSHubPort, portnum, "(%u vs %u)"); + AIM_CHECK(hwa_bDeviceInfoIndex, portnum, "(%u vs %u)"); AIM_CHECK(bSpeed, usb_pipeendpoint(urb->pipe) == 0 ? UWB_PHY_RATE_53 : UWB_PHY_RATE_200, "(%u vs %u)"); - AIM_CHECK(bDeviceAddress, urb->dev->devnum | unauth, "(%u vs %u)"); AIM_CHECK(bEndpointAddress, ep->desc.bEndpointAddress, "(%u vs %u)"); AIM_CHECK(bInterval, ep->desc.bInterval, "(%u vs %u)"); AIM_CHECK(bmAttribute, ep->desc.bmAttributes & 0x03, "(%u vs %u)"); @@ -528,3 +527,24 @@ void rpipe_ep_disable(struct wahc *wa, struct usb_host_endpoint *ep) mutex_unlock(&wa->rpipe_mutex); } EXPORT_SYMBOL_GPL(rpipe_ep_disable); + +/* Clear the stalled status of an RPIPE. */ +void rpipe_clear_feature_stalled(struct wahc *wa, struct usb_host_endpoint *ep) +{ + struct wa_rpipe *rpipe; + + mutex_lock(&wa->rpipe_mutex); + rpipe = ep->hcpriv; + if (rpipe != NULL) { + u16 index = le16_to_cpu(rpipe->descr.wRPipeIndex); + + usb_control_msg( + wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0), + USB_REQ_CLEAR_FEATURE, + USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_RPIPE, + RPIPE_STALL, index, NULL, 0, 1000); + } + mutex_unlock(&wa->rpipe_mutex); +} +EXPORT_SYMBOL_GPL(rpipe_clear_feature_stalled); + diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index 6ef94bce8c0d..6ad02f57c366 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -85,6 +85,7 @@ #include <linux/hash.h> #include <linux/ratelimit.h> #include <linux/export.h> +#include <linux/scatterlist.h> #include "wa-hc.h" #include "wusbhc.h" @@ -124,10 +125,13 @@ struct wa_seg { u8 xfer_extra[]; /* xtra space for xfer_hdr_ctl */ }; -static void wa_seg_init(struct wa_seg *seg) +static inline void wa_seg_init(struct wa_seg *seg) { - /* usb_init_urb() repeats a lot of work, so we do it here */ - kref_init(&seg->urb.kref); + usb_init_urb(&seg->urb); + + /* set the remaining memory to 0. */ + memset(((void *)seg) + sizeof(seg->urb), 0, + sizeof(*seg) - sizeof(seg->urb)); } /* @@ -165,8 +169,8 @@ static inline void wa_xfer_init(struct wa_xfer *xfer) /* * Destroy a transfer structure * - * Note that the xfer->seg[index] thingies follow the URB life cycle, - * so we need to put them, not free them. + * Note that freeing xfer->seg[cnt]->urb will free the containing + * xfer->seg[cnt] memory that was allocated by __wa_xfer_setup_segs. */ static void wa_xfer_destroy(struct kref *_xfer) { @@ -174,9 +178,8 @@ static void wa_xfer_destroy(struct kref *_xfer) if (xfer->seg) { unsigned cnt; for (cnt = 0; cnt < xfer->segs; cnt++) { - if (xfer->is_inbound) - usb_put_urb(xfer->seg[cnt]->dto_urb); - usb_put_urb(&xfer->seg[cnt]->urb); + usb_free_urb(xfer->seg[cnt]->dto_urb); + usb_free_urb(&xfer->seg[cnt]->urb); } } kfree(xfer); @@ -442,8 +445,7 @@ static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer, goto error; } xfer->seg_size = (xfer->seg_size / maxpktsize) * maxpktsize; - xfer->segs = (urb->transfer_buffer_length + xfer->seg_size - 1) - / xfer->seg_size; + xfer->segs = DIV_ROUND_UP(urb->transfer_buffer_length, xfer->seg_size); if (xfer->segs >= WA_SEGS_MAX) { dev_err(dev, "BUG? ops, number of segments %d bigger than %d\n", (int)(urb->transfer_buffer_length / xfer->seg_size), @@ -627,6 +629,86 @@ static void wa_seg_cb(struct urb *urb) } } +/* allocate an SG list to store bytes_to_transfer bytes and copy the + * subset of the in_sg that matches the buffer subset + * we are about to transfer. */ +static struct scatterlist *wa_xfer_create_subset_sg(struct scatterlist *in_sg, + const unsigned int bytes_transferred, + const unsigned int bytes_to_transfer, unsigned int *out_num_sgs) +{ + struct scatterlist *out_sg; + unsigned int bytes_processed = 0, offset_into_current_page_data = 0, + nents; + struct scatterlist *current_xfer_sg = in_sg; + struct scatterlist *current_seg_sg, *last_seg_sg; + + /* skip previously transferred pages. */ + while ((current_xfer_sg) && + (bytes_processed < bytes_transferred)) { + bytes_processed += current_xfer_sg->length; + + /* advance the sg if current segment starts on or past the + next page. */ + if (bytes_processed <= bytes_transferred) + current_xfer_sg = sg_next(current_xfer_sg); + } + + /* the data for the current segment starts in current_xfer_sg. + calculate the offset. */ + if (bytes_processed > bytes_transferred) { + offset_into_current_page_data = current_xfer_sg->length - + (bytes_processed - bytes_transferred); + } + + /* calculate the number of pages needed by this segment. */ + nents = DIV_ROUND_UP((bytes_to_transfer + + offset_into_current_page_data + + current_xfer_sg->offset), + PAGE_SIZE); + + out_sg = kmalloc((sizeof(struct scatterlist) * nents), GFP_ATOMIC); + if (out_sg) { + sg_init_table(out_sg, nents); + + /* copy the portion of the incoming SG that correlates to the + * data to be transferred by this segment to the segment SG. */ + last_seg_sg = current_seg_sg = out_sg; + bytes_processed = 0; + + /* reset nents and calculate the actual number of sg entries + needed. */ + nents = 0; + while ((bytes_processed < bytes_to_transfer) && + current_seg_sg && current_xfer_sg) { + unsigned int page_len = min((current_xfer_sg->length - + offset_into_current_page_data), + (bytes_to_transfer - bytes_processed)); + + sg_set_page(current_seg_sg, sg_page(current_xfer_sg), + page_len, + current_xfer_sg->offset + + offset_into_current_page_data); + + bytes_processed += page_len; + + last_seg_sg = current_seg_sg; + current_seg_sg = sg_next(current_seg_sg); + current_xfer_sg = sg_next(current_xfer_sg); + + /* only the first page may require additional offset. */ + offset_into_current_page_data = 0; + nents++; + } + + /* update num_sgs and terminate the list since we may have + * concatenated pages. */ + sg_mark_end(last_seg_sg); + *out_num_sgs = nents; + } + + return out_sg; +} + /* * Allocate the segs array and initialize each of them * @@ -652,9 +734,9 @@ static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size) buf_itr = 0; buf_size = xfer->urb->transfer_buffer_length; for (cnt = 0; cnt < xfer->segs; cnt++) { - seg = xfer->seg[cnt] = kzalloc(alloc_size, GFP_ATOMIC); + seg = xfer->seg[cnt] = kmalloc(alloc_size, GFP_ATOMIC); if (seg == NULL) - goto error_seg_kzalloc; + goto error_seg_kmalloc; wa_seg_init(seg); seg->xfer = xfer; seg->index = cnt; @@ -663,9 +745,9 @@ static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size) dto_epd->bEndpointAddress), &seg->xfer_hdr, xfer_hdr_size, wa_seg_cb, seg); - buf_itr_size = buf_size > xfer->seg_size ? - xfer->seg_size : buf_size; + buf_itr_size = min(buf_size, xfer->seg_size); if (xfer->is_inbound == 0 && buf_size > 0) { + /* outbound data. */ seg->dto_urb = usb_alloc_urb(0, GFP_ATOMIC); if (seg->dto_urb == NULL) goto error_dto_alloc; @@ -679,9 +761,42 @@ static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size) xfer->urb->transfer_dma + buf_itr; seg->dto_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; - } else - seg->dto_urb->transfer_buffer = - xfer->urb->transfer_buffer + buf_itr; + seg->dto_urb->transfer_buffer = NULL; + seg->dto_urb->sg = NULL; + seg->dto_urb->num_sgs = 0; + } else { + /* do buffer or SG processing. */ + seg->dto_urb->transfer_flags &= + ~URB_NO_TRANSFER_DMA_MAP; + /* this should always be 0 before a resubmit. */ + seg->dto_urb->num_mapped_sgs = 0; + + if (xfer->urb->transfer_buffer) { + seg->dto_urb->transfer_buffer = + xfer->urb->transfer_buffer + + buf_itr; + seg->dto_urb->sg = NULL; + seg->dto_urb->num_sgs = 0; + } else { + /* allocate an SG list to store seg_size + bytes and copy the subset of the + xfer->urb->sg that matches the + buffer subset we are about to read. + */ + seg->dto_urb->sg = + wa_xfer_create_subset_sg( + xfer->urb->sg, + buf_itr, buf_itr_size, + &(seg->dto_urb->num_sgs)); + + if (!(seg->dto_urb->sg)) { + seg->dto_urb->num_sgs = 0; + goto error_sg_alloc; + } + + seg->dto_urb->transfer_buffer = NULL; + } + } seg->dto_urb->transfer_buffer_length = buf_itr_size; } seg->status = WA_SEG_READY; @@ -690,14 +805,18 @@ static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size) } return 0; +error_sg_alloc: + usb_free_urb(xfer->seg[cnt]->dto_urb); error_dto_alloc: kfree(xfer->seg[cnt]); cnt--; -error_seg_kzalloc: +error_seg_kmalloc: /* use the fact that cnt is left at were it failed */ for (; cnt >= 0; cnt--) { - if (xfer->seg[cnt] && xfer->is_inbound == 0) + if (xfer->seg[cnt] && xfer->is_inbound == 0) { usb_free_urb(xfer->seg[cnt]->dto_urb); + kfree(xfer->seg[cnt]->dto_urb->sg); + } kfree(xfer->seg[cnt]); } error_segs_kzalloc: @@ -813,7 +932,7 @@ static void wa_xfer_delayed_run(struct wa_rpipe *rpipe) spin_lock_irqsave(&rpipe->seg_lock, flags); while (atomic_read(&rpipe->segs_available) > 0 && !list_empty(&rpipe->seg_list)) { - seg = list_entry(rpipe->seg_list.next, struct wa_seg, + seg = list_first_entry(&(rpipe->seg_list), struct wa_seg, list_node); list_del(&seg->list_node); xfer = seg->xfer; @@ -978,34 +1097,82 @@ error_xfer_submit: * * We need to be careful here, as dequeue() could be called in the * middle. That's why we do the whole thing under the - * wa->xfer_list_lock. If dequeue() jumps in, it first locks urb->lock + * wa->xfer_list_lock. If dequeue() jumps in, it first locks xfer->lock * and then checks the list -- so as we would be acquiring in inverse - * order, we just drop the lock once we have the xfer and reacquire it - * later. + * order, we move the delayed list to a separate list while locked and then + * submit them without the list lock held. */ void wa_urb_enqueue_run(struct work_struct *ws) { - struct wahc *wa = container_of(ws, struct wahc, xfer_work); + struct wahc *wa = container_of(ws, struct wahc, xfer_enqueue_work); struct wa_xfer *xfer, *next; struct urb *urb; + LIST_HEAD(tmp_list); + /* Create a copy of the wa->xfer_delayed_list while holding the lock */ spin_lock_irq(&wa->xfer_list_lock); - list_for_each_entry_safe(xfer, next, &wa->xfer_delayed_list, - list_node) { + list_cut_position(&tmp_list, &wa->xfer_delayed_list, + wa->xfer_delayed_list.prev); + spin_unlock_irq(&wa->xfer_list_lock); + + /* + * enqueue from temp list without list lock held since wa_urb_enqueue_b + * can take xfer->lock as well as lock mutexes. + */ + list_for_each_entry_safe(xfer, next, &tmp_list, list_node) { list_del_init(&xfer->list_node); - spin_unlock_irq(&wa->xfer_list_lock); urb = xfer->urb; wa_urb_enqueue_b(xfer); usb_put_urb(urb); /* taken when queuing */ - - spin_lock_irq(&wa->xfer_list_lock); } - spin_unlock_irq(&wa->xfer_list_lock); } EXPORT_SYMBOL_GPL(wa_urb_enqueue_run); /* + * Process the errored transfers on the Wire Adapter outside of interrupt. + */ +void wa_process_errored_transfers_run(struct work_struct *ws) +{ + struct wahc *wa = container_of(ws, struct wahc, xfer_error_work); + struct wa_xfer *xfer, *next; + LIST_HEAD(tmp_list); + + pr_info("%s: Run delayed STALL processing.\n", __func__); + + /* Create a copy of the wa->xfer_errored_list while holding the lock */ + spin_lock_irq(&wa->xfer_list_lock); + list_cut_position(&tmp_list, &wa->xfer_errored_list, + wa->xfer_errored_list.prev); + spin_unlock_irq(&wa->xfer_list_lock); + + /* + * run rpipe_clear_feature_stalled from temp list without list lock + * held. + */ + list_for_each_entry_safe(xfer, next, &tmp_list, list_node) { + struct usb_host_endpoint *ep; + unsigned long flags; + struct wa_rpipe *rpipe; + + spin_lock_irqsave(&xfer->lock, flags); + ep = xfer->ep; + rpipe = ep->hcpriv; + spin_unlock_irqrestore(&xfer->lock, flags); + + /* clear RPIPE feature stalled without holding a lock. */ + rpipe_clear_feature_stalled(wa, ep); + + /* complete the xfer. This removes it from the tmp list. */ + wa_xfer_completion(xfer); + + /* check for work. */ + wa_xfer_delayed_run(rpipe); + } +} +EXPORT_SYMBOL_GPL(wa_process_errored_transfers_run); + +/* * Submit a transfer to the Wire Adapter in a delayed way * * The process of enqueuing involves possible sleeps() [see @@ -1026,7 +1193,8 @@ int wa_urb_enqueue(struct wahc *wa, struct usb_host_endpoint *ep, unsigned long my_flags; unsigned cant_sleep = irqs_disabled() | in_atomic(); - if (urb->transfer_buffer == NULL + if ((urb->transfer_buffer == NULL) + && (urb->sg == NULL) && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) && urb->transfer_buffer_length != 0) { dev_err(dev, "BUG? urb %p: NULL xfer buffer & NODMA\n", urb); @@ -1059,7 +1227,7 @@ int wa_urb_enqueue(struct wahc *wa, struct usb_host_endpoint *ep, spin_lock_irqsave(&wa->xfer_list_lock, my_flags); list_add_tail(&xfer->list_node, &wa->xfer_delayed_list); spin_unlock_irqrestore(&wa->xfer_list_lock, my_flags); - queue_work(wusbd, &wa->xfer_work); + queue_work(wusbd, &wa->xfer_enqueue_work); } else { wa_urb_enqueue_b(xfer); } @@ -1101,7 +1269,8 @@ int wa_urb_dequeue(struct wahc *wa, struct urb *urb) xfer = urb->hcpriv; if (xfer == NULL) { - /* NOthing setup yet enqueue will see urb->status != + /* + * Nothing setup yet enqueue will see urb->status != * -EINPROGRESS (by hcd layer) and bail out with * error, no need to do completion */ @@ -1110,6 +1279,12 @@ int wa_urb_dequeue(struct wahc *wa, struct urb *urb) } spin_lock_irqsave(&xfer->lock, flags); rpipe = xfer->ep->hcpriv; + if (rpipe == NULL) { + pr_debug("%s: xfer id 0x%08X has no RPIPE. %s", + __func__, wa_xfer_id(xfer), + "Probably already aborted.\n" ); + goto out_unlock; + } /* Check the delayed list -> if there, release and complete */ spin_lock_irqsave(&wa->xfer_list_lock, flags2); if (!list_empty(&xfer->list_node) && xfer->seg == NULL) @@ -1239,7 +1414,7 @@ static int wa_xfer_status_to_errno(u8 status) * * inbound transfers: need to schedule a DTI read * - * FIXME: this functio needs to be broken up in parts + * FIXME: this function needs to be broken up in parts */ static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer) { @@ -1261,7 +1436,7 @@ static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer) seg = xfer->seg[seg_idx]; rpipe = xfer->ep->hcpriv; usb_status = xfer_result->bTransferStatus; - dev_dbg(dev, "xfer %p#%u: bTransferStatus 0x%02x (seg %u)\n", + dev_dbg(dev, "xfer %p#%u: bTransferStatus 0x%02x (seg status %u)\n", xfer, seg_idx, usb_status, seg->status); if (seg->status == WA_SEG_ABORTED || seg->status == WA_SEG_ERROR) /* already handled */ @@ -1276,8 +1451,8 @@ static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer) } if (usb_status & 0x80) { seg->result = wa_xfer_status_to_errno(usb_status); - dev_err(dev, "DTI: xfer %p#%u failed (0x%02x)\n", - xfer, seg->index, usb_status); + dev_err(dev, "DTI: xfer %p#:%08X:%u failed (0x%02x)\n", + xfer, xfer->id, seg->index, usb_status); goto error_complete; } /* FIXME: we ignore warnings, tally them for stats */ @@ -1286,18 +1461,47 @@ static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer) if (xfer->is_inbound) { /* IN data phase: read to buffer */ seg->status = WA_SEG_DTI_PENDING; BUG_ON(wa->buf_in_urb->status == -EINPROGRESS); + /* this should always be 0 before a resubmit. */ + wa->buf_in_urb->num_mapped_sgs = 0; + if (xfer->is_dma) { wa->buf_in_urb->transfer_dma = xfer->urb->transfer_dma - + seg_idx * xfer->seg_size; + + (seg_idx * xfer->seg_size); wa->buf_in_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + wa->buf_in_urb->transfer_buffer = NULL; + wa->buf_in_urb->sg = NULL; + wa->buf_in_urb->num_sgs = 0; } else { - wa->buf_in_urb->transfer_buffer = - xfer->urb->transfer_buffer - + seg_idx * xfer->seg_size; + /* do buffer or SG processing. */ wa->buf_in_urb->transfer_flags &= ~URB_NO_TRANSFER_DMA_MAP; + + if (xfer->urb->transfer_buffer) { + wa->buf_in_urb->transfer_buffer = + xfer->urb->transfer_buffer + + (seg_idx * xfer->seg_size); + wa->buf_in_urb->sg = NULL; + wa->buf_in_urb->num_sgs = 0; + } else { + /* allocate an SG list to store seg_size bytes + and copy the subset of the xfer->urb->sg + that matches the buffer subset we are + about to read. */ + wa->buf_in_urb->sg = wa_xfer_create_subset_sg( + xfer->urb->sg, + seg_idx * xfer->seg_size, + le32_to_cpu( + xfer_result->dwTransferLength), + &(wa->buf_in_urb->num_sgs)); + + if (!(wa->buf_in_urb->sg)) { + wa->buf_in_urb->num_sgs = 0; + goto error_sg_alloc; + } + wa->buf_in_urb->transfer_buffer = NULL; + } } wa->buf_in_urb->transfer_buffer_length = le32_to_cpu(xfer_result->dwTransferLength); @@ -1330,17 +1534,39 @@ error_submit_buf_in: dev_err(dev, "xfer %p#%u: can't submit DTI data phase: %d\n", xfer, seg_idx, result); seg->result = result; + kfree(wa->buf_in_urb->sg); +error_sg_alloc: + __wa_xfer_abort(xfer); error_complete: seg->status = WA_SEG_ERROR; xfer->segs_done++; rpipe_ready = rpipe_avail_inc(rpipe); - __wa_xfer_abort(xfer); done = __wa_xfer_is_done(xfer); - spin_unlock_irqrestore(&xfer->lock, flags); - if (done) - wa_xfer_completion(xfer); - if (rpipe_ready) - wa_xfer_delayed_run(rpipe); + /* + * queue work item to clear STALL for control endpoints. + * Otherwise, let endpoint_reset take care of it. + */ + if (((usb_status & 0x3f) == WA_XFER_STATUS_HALTED) && + usb_endpoint_xfer_control(&xfer->ep->desc) && + done) { + + dev_info(dev, "Control EP stall. Queue delayed work.\n"); + spin_lock_irq(&wa->xfer_list_lock); + /* remove xfer from xfer_list. */ + list_del(&xfer->list_node); + /* add xfer to xfer_errored_list. */ + list_add_tail(&xfer->list_node, &wa->xfer_errored_list); + spin_unlock_irq(&wa->xfer_list_lock); + spin_unlock_irqrestore(&xfer->lock, flags); + queue_work(wusbd, &wa->xfer_error_work); + } else { + spin_unlock_irqrestore(&xfer->lock, flags); + if (done) + wa_xfer_completion(xfer); + if (rpipe_ready) + wa_xfer_delayed_run(rpipe); + } + return; error_bad_seg: @@ -1381,6 +1607,10 @@ static void wa_buf_in_cb(struct urb *urb) unsigned long flags; u8 done = 0; + /* free the sg if it was used. */ + kfree(urb->sg); + urb->sg = NULL; + switch (urb->status) { case 0: spin_lock_irqsave(&xfer->lock, flags); @@ -1493,8 +1723,7 @@ static void wa_xfer_result_cb(struct urb *urb) break; } usb_status = xfer_result->bTransferStatus & 0x3f; - if (usb_status == WA_XFER_STATUS_ABORTED - || usb_status == WA_XFER_STATUS_NOT_FOUND) + if (usb_status == WA_XFER_STATUS_NOT_FOUND) /* taken care of already */ break; xfer_id = xfer_result->dwTransferID; diff --git a/drivers/usb/wusbcore/wusbhc.c b/drivers/usb/wusbcore/wusbhc.c index 0faca16df765..742c607d1fa3 100644 --- a/drivers/usb/wusbcore/wusbhc.c +++ b/drivers/usb/wusbcore/wusbhc.c @@ -75,12 +75,11 @@ static ssize_t wusb_trust_timeout_store(struct device *dev, result = -EINVAL; goto out; } - /* FIXME: maybe we should check for range validity? */ - wusbhc->trust_timeout = trust_timeout; + wusbhc->trust_timeout = min_t(unsigned, trust_timeout, 500); cancel_delayed_work(&wusbhc->keep_alive_timer); flush_workqueue(wusbd); queue_delayed_work(wusbd, &wusbhc->keep_alive_timer, - (trust_timeout * CONFIG_HZ)/1000/2); + msecs_to_jiffies(wusbhc->trust_timeout / 2)); out: return result < 0 ? result : size; } @@ -176,11 +175,72 @@ static ssize_t wusb_phy_rate_store(struct device *dev, } static DEVICE_ATTR(wusb_phy_rate, 0644, wusb_phy_rate_show, wusb_phy_rate_store); +static ssize_t wusb_dnts_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); + + return sprintf(buf, "num slots: %d\ninterval: %dms\n", + wusbhc->dnts_num_slots, wusbhc->dnts_interval); +} + +static ssize_t wusb_dnts_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); + uint8_t num_slots, interval; + ssize_t result; + + result = sscanf(buf, "%hhu %hhu", &num_slots, &interval); + + if (result != 2) + return -EINVAL; + + wusbhc->dnts_num_slots = num_slots; + wusbhc->dnts_interval = interval; + + return size; +} +static DEVICE_ATTR(wusb_dnts, 0644, wusb_dnts_show, wusb_dnts_store); + +static ssize_t wusb_retry_count_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); + + return sprintf(buf, "%d\n", wusbhc->retry_count); +} + +static ssize_t wusb_retry_count_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); + uint8_t retry_count; + ssize_t result; + + result = sscanf(buf, "%hhu", &retry_count); + + if (result != 1) + return -EINVAL; + + wusbhc->retry_count = max_t(uint8_t, retry_count, WUSB_RETRY_COUNT_MAX); + + return size; +} +static DEVICE_ATTR(wusb_retry_count, 0644, wusb_retry_count_show, + wusb_retry_count_store); + /* Group all the WUSBHC attributes */ static struct attribute *wusbhc_attrs[] = { &dev_attr_wusb_trust_timeout.attr, &dev_attr_wusb_chid.attr, &dev_attr_wusb_phy_rate.attr, + &dev_attr_wusb_dnts.attr, + &dev_attr_wusb_retry_count.attr, NULL, }; @@ -206,8 +266,12 @@ int wusbhc_create(struct wusbhc *wusbhc) { int result = 0; + /* set defaults. These can be overwritten using sysfs attributes. */ wusbhc->trust_timeout = WUSB_TRUST_TIMEOUT_MS; wusbhc->phy_rate = UWB_PHY_RATE_INVALID - 1; + wusbhc->dnts_num_slots = 4; + wusbhc->dnts_interval = 2; + wusbhc->retry_count = WUSB_RETRY_COUNT_INFINITE; mutex_init(&wusbhc->mutex); result = wusbhc_mmcie_create(wusbhc); @@ -261,13 +325,7 @@ int wusbhc_b_create(struct wusbhc *wusbhc) goto error_create_attr_group; } - result = wusbhc_pal_register(wusbhc); - if (result < 0) - goto error_pal_register; return 0; - -error_pal_register: - sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group); error_create_attr_group: return result; } @@ -393,7 +451,8 @@ EXPORT_SYMBOL_GPL(wusbhc_giveback_urb); */ void wusbhc_reset_all(struct wusbhc *wusbhc) { - uwb_rc_reset_all(wusbhc->uwb_rc); + if (wusbhc->uwb_rc) + uwb_rc_reset_all(wusbhc->uwb_rc); } EXPORT_SYMBOL_GPL(wusbhc_reset_all); diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h index 3a2d09162e70..711b1952b114 100644 --- a/drivers/usb/wusbcore/wusbhc.h +++ b/drivers/usb/wusbcore/wusbhc.h @@ -69,6 +69,8 @@ * zone 0. */ #define WUSB_CHANNEL_STOP_DELAY_MS 8 +#define WUSB_RETRY_COUNT_MAX 15 +#define WUSB_RETRY_COUNT_INFINITE 0 /** * Wireless USB device @@ -252,6 +254,9 @@ struct wusbhc { unsigned trust_timeout; /* in jiffies */ struct wusb_ckhdid chid; uint8_t phy_rate; + uint8_t dnts_num_slots; + uint8_t dnts_interval; + uint8_t retry_count; struct wuie_host_info *wuie_host_info; struct mutex mutex; /* locks everything else */ @@ -399,8 +404,6 @@ extern void wusbhc_rh_destroy(struct wusbhc *); extern int wusbhc_rh_status_data(struct usb_hcd *, char *); extern int wusbhc_rh_control(struct usb_hcd *, u16, u16, u16, char *, u16); -extern int wusbhc_rh_suspend(struct usb_hcd *); -extern int wusbhc_rh_resume(struct usb_hcd *); extern int wusbhc_rh_start_port_reset(struct usb_hcd *, unsigned); /* MMC handling */ |