From acb4a107998491e4bd0444a4f0d41dadecb50652 Mon Sep 17 00:00:00 2001 From: Hemant Kumar Date: Tue, 22 Mar 2016 19:34:20 -0700 Subject: usb: xhci: Add helper APIs to return xhci dma addresses dma address of secondary event ring, transfer ring and device context base address are required to pass to remote entity. Remote entity uses these addresses to program xhci controller registers. Change-Id: Ie0756d646a396a11b41b93e886bca9aff636ee5d Signed-off-by: Hemant Kumar --- include/linux/usb/hcd.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux/usb') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 56c7fba6dcdf..3740366d9fc5 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -398,6 +398,12 @@ struct hc_driver { int (*sec_event_ring_setup)(struct usb_hcd *hcd, unsigned intr_num); int (*sec_event_ring_cleanup)(struct usb_hcd *hcd, unsigned intr_num); + dma_addr_t (*get_sec_event_ring_dma_addr)(struct usb_hcd *hcd, + unsigned intr_num); + dma_addr_t (*get_xfer_ring_dma_addr)(struct usb_hcd *hcd, + struct usb_device *udev, struct usb_host_endpoint *ep); + dma_addr_t (*get_dcba_dma_addr)(struct usb_hcd *hcd, + struct usb_device *udev); }; static inline int hcd_giveback_urb_in_bh(struct usb_hcd *hcd) @@ -440,6 +446,13 @@ extern int usb_hcd_sec_event_ring_setup(struct usb_device *udev, unsigned intr_num); extern int usb_hcd_sec_event_ring_cleanup(struct usb_device *udev, unsigned intr_num); +extern dma_addr_t +usb_hcd_get_sec_event_ring_dma_addr(struct usb_device *udev, + unsigned intr_num); +extern dma_addr_t usb_hcd_get_dcba_dma_addr(struct usb_device *udev); +extern dma_addr_t +usb_hcd_get_xfer_ring_dma_addr(struct usb_device *udev, + struct usb_host_endpoint *ep); extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, struct device *dev, const char *bus_name); -- cgit v1.2.3