| Commit message (Collapse) | Author | Age |
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We currently have two instance of this loop which waits for a pending bit
to clear in a status dword. Generalize the function for future users.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/pciehp:
PCI: pciehp: Move Attention & Power Indicator support tests to accessors
PCI: pciehp: Use symbolic constants for Slot Control fields
PCI: pciehp: Use symbolic constants, not hard-coded bitmask
PCI: pciehp: Simplify "Power Fault Detected" checking/clearing
PCI: pciehp: Announce slot capabilities (slot #, button, LEDs, etc)
PCI: pciehp: Make various functions void since they can't fail
PCI: pciehp: Remove error checks when accessing PCIe Capability
PCI: pciehp: Drop pciehp_readw()/pciehp_writew() wrappers
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Previously, the caller checked ATTN_LED() or PWR_LED() to see whether the
slot has indicators before setting the indicator state. That clutters the
caller unnecessarily, so this moves the test inside the callees. The test
may not even be necessary; per spec it should be harmless to try to turn on
a non-existent LED. But checking first does avoid unnecessary hotplug
commands.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Add symbolic constants for the PCIe Slot Control indicator and power
control fields defined by spec and use them instead of open-coded hex
constants.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use the PCI_EXP_SLTSTA definitions, not 0x1f, when clearing Slot Status
bits.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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It's simpler to test the PCI_EXP_SLTSTA_PFD bit directly and to write the
constant back to PCI_EXP_SLTSTA.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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We already have the vendor/device IDs from pci_setup_device(), so drop that
info and print things that will be more useful for debugging: the slot
number and presence of button/indicators/link active reporting/etc.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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These functions:
pcie_enable_notification()
pciehp_power_off_slot()
pciehp_get_power_status()
pciehp_get_attention_status()
pciehp_set_attention_status()
pciehp_get_latch_status()
pciehp_get_adapter_status()
pcie_write_cmd()
now always return success, so this patch makes them void and drops the
error-checking code in their callers.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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There's not much point in checking the return value from every config space
access because the only likely errors are design-time things like unaligned
accesses or invalid register numbers. The checking clutters the code
significantly, so this patch removes it.
No functional change.
Reference: http://lkml.kernel.org/r/CA+55aFzP4xEbcNmZ+MS0SQ3LrULzSq+dBiT_X9U-bPpR-Ukgrw@mail.gmail.com
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The pciehp_readw() and pciehp_writew() wrappers only look up the pci_dev
and call the PCIe Capability accessors, so we can make things a little
more straightforward by just using the PCIe Capability accessors directly.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/host-tegra:
PCI: Disable Gen2 for Tegra20 and Tegra30
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Tegra20 and Tegra30 do not support gen2 PCIe, so correct the
register setting to disable it.
Signed-off-by: Eric Brower <ebrower@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thierry Reding <treding@nvidia.com>
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* pci/host-rcar:
PCI: rcar: Add runtime PM support
PCI: rcar: Fix rcar_pci_probe() return value check
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If runtime PM is enabled in the kernel config, the PCI clocks are not
forced on at start-up, and thus, are never enabled. Use
pm_runtime_get_sync() to enable the clocks.
While at it, use dev_info() instead of pr_info() since now we have the
device pointer available in the PCI setup callback.
Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
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* pci/host-mvebu:
PCI: mvebu: Remove duplicate of_clk_get_by_name() call
PCI: mvebu: Support a bridge with no IO port window
PCI: mvebu: Obey bridge PCI_COMMAND_MEM and PCI_COMMAND_IO bits
PCI: mvebu: Drop writes to bridge Secondary Status register
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Probably due to a merge conflict resolution gone bad, the PCI clock is
got twice. Remove the redundant call of of_clk_get_by_name().
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
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Make pcie-io-aperture and the IO port MBUS ID in ranges optional. If not
provided the bridge reports to Linux that IO space mapping is not supported
and refuses to configure an IO MBUS window.
This allows both complete disable (do not specify pcie-io-aperture) and
per-port disable (do not specify a IO target ranges entry for the port).
Most PCIe devices these days do not require IO support to function, so
having an option to disable it in the driver is useful.
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
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When PCI_COMMAND_MEMORY/PCI_COMMAND_IO are cleared, the bridge should not
allocate windows or even look at the window limit/base registers.
Otherwise we may set up bogus windows while the PCI core code performs
discovery. The core will leave PCI_COMMAND_IO cleared if it doesn't need
an IO window.
Have mvebu_pcie_handle_*_change respect the bits, and call the change
function whenever the bits changes.
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
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There are no writable bits in the secondary status register, only RO and
RW1C (write-1-to-clear) bits. The driver never sets any of the RW1C bits,
so the status register should always be 0, just remove the set from the
write path.
Someday the RW1C bits should be copied/cleared directly from registers in
the HW.
[bhelgaas: changelog tweaks]
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
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* pci/host-imx6:
PCI: imx6: Remove unneeded 'goto err'
PCI: imx6: Remove unneeded check of platform_get_resource()
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There is no need to use 'goto err' as we can directly return the errors.
No functional change.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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When using devm_ioremap_resource(), we do not need to check the return
value of platform_get_resource(), so just remove it.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marek Vasut <marex@denx.de>
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* pci/host-designware:
PCI: designware: Use typical "for" loop idiom
PCI: designware: Remove redundant call to pci_write_config_word()
PCI: designware: Fix crash in dw_msi_teardown_irq()
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It's conventional to use "for" rather than "while" for simple iteration.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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write_msi_msg() does exactly the same so there is no need to explicitly
call pci_write_config_word() and do the same twice.
Tested-by: Mohit Kumar <mohit.kumar@st.com>
Signed-off-by: Bjørn Erik Nilsen <ben@datarespons.no>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
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904d0e788993 ("PCI: designware: Add irq_create_mapping()") resulted in
pre-allocated irq descs. Problem was that in assign_irq() these descs were
explicitly allocated and hence also freed, resulting in a crash. We also
need to clear the entire irq range in teardown. With this commit the
teardown basically does exactly the opposite of what was done in setup.
The crash this fixes looks like:
Unable to handle kernel NULL pointer dereference at virtual address 00000020
PC is at dw_msi_teardown_irq+0x40/0x118
LR is at trace_hardirqs_on_caller+0xf4/0x1c0
Backtrace:
[<802c401c>] (dw_msi_teardown_irq+0x0/0x118) from [<802c1844>] (arch_teardown_msi_irq+0x3c/0x40)
[<802c1808>] (arch_teardown_msi_irq+0x0/0x40) from [<802c1a08>] (default_teardown_msi_irqs+0x68/0x84)
[<802c19a0>] (default_teardown_msi_irqs+0x0/0x84) from [<802c1a34>] (arch_teardown_msi_irqs+0x10/0x14)
[<802c1a24>] (arch_teardown_msi_irqs+0x0/0x14) from [<802c1ad0>] (free_msi_irqs+0x98/0x144)
[<802c1a38>] (free_msi_irqs+0x0/0x144) from [<802c2570>] (pci_disable_msi+0x48/0x60)
[<802c2528>] (pci_disable_msi+0x0/0x60) from [<7f0057d4>] (sxdma_irq_free+0x44/0x48 [sxdma])
[bhelgaas: add crash info]
Tested-by: Mohit Kumar <mohit.kumar@st.com>
Signed-off-by: Bjørn Erik Nilsen <ben@datarespons.no>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
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* pci/deletion:
PCI: Remove from bus_list and release resources in pci_release_dev()
PCI: Move pci_proc_attach_device() to pci_bus_add_device()
PCI: Use device_release_driver() in pci_stop_root_bus()
PCI: Move device_del() from pci_stop_dev() to pci_destroy_dev()
Conflicts:
drivers/pci/remove.c
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Previously we removed the pci_dev from the bus_list and released its
resources in pci_destroy_dev(). But that's too early: it's possible to
call pci_destroy_dev() twice for the same device (e.g., via sysfs), and
that will cause an oops when we try to remove it from bus_list the second
time.
We should remove it from the bus_list only when the last reference to the
pci_dev has been released, i.e., in pci_release_dev().
[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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4f535093cf8f ("PCI: Put pci_dev in device tree as early as possible")
moved pci_proc_attach_device() from pci_bus_add_device() to
pci_device_add().
This moves it back to pci_bus_add_device(), essentially reverting that
part of 4f535093cf8f. This makes it symmetric with pci_stop_dev(),
where we call pci_proc_detach_device() and pci_remove_sysfs_dev_files()
and set dev->is_added = 0.
[bhelgaas: changelog, create sysfs then attach proc for symmetry]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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To be consistent with 4bff6749905d ("PCI: Move device_del() from
pci_stop_dev() to pci_destroy_dev()", this changes pci_stop_root_bus()
to use device_release_driver() instead of device_del().
This also changes pci_remove_root_bus() to use device_unregister()
instead of put_device() so it corresponds with the device_register()
call in pci_create_root_bus().
[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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After commit bcdde7e221a8 (sysfs: make __sysfs_remove_dir() recursive)
I'm seeing traces analogous to the one below in Thunderbolt testing:
WARNING: CPU: 3 PID: 76 at /scratch/rafael/work/linux-pm/fs/sysfs/group.c:214 sysfs_remove_group+0x59/0xe0()
sysfs group ffffffff81c6c500 not found for kobject '0000:08'
Modules linked in: ...
CPU: 3 PID: 76 Comm: kworker/u16:7 Not tainted 3.13.0-rc1+ #76
Hardware name: Acer Aspire S5-391/Venus , BIOS V1.02 05/29/2012
Workqueue: kacpi_hotplug acpi_hotplug_work_fn
0000000000000009 ffff8801644b9ac8 ffffffff816b23bf 0000000000000007
ffff8801644b9b18 ffff8801644b9b08 ffffffff81046607 ffff88016925b800
0000000000000000 ffffffff81c6c500 ffff88016924f928 ffff88016924f800
Call Trace:
[<ffffffff816b23bf>] dump_stack+0x4e/0x71
[<ffffffff81046607>] warn_slowpath_common+0x87/0xb0
[<ffffffff810466d1>] warn_slowpath_fmt+0x41/0x50
[<ffffffff811e42ef>] ? sysfs_get_dirent_ns+0x6f/0x80
[<ffffffff811e5389>] sysfs_remove_group+0x59/0xe0
[<ffffffff8149f00b>] dpm_sysfs_remove+0x3b/0x50
[<ffffffff81495818>] device_del+0x58/0x1c0
[<ffffffff814959c8>] device_unregister+0x48/0x60
[<ffffffff813254fe>] pci_remove_bus+0x6e/0x80
[<ffffffff81325548>] pci_remove_bus_device+0x38/0x110
[<ffffffff8132555d>] pci_remove_bus_device+0x4d/0x110
[<ffffffff81325639>] pci_stop_and_remove_bus_device+0x19/0x20
[<ffffffff813418d0>] disable_slot+0x20/0xe0
[<ffffffff81341a38>] acpiphp_check_bridge+0xa8/0xd0
[<ffffffff813427ad>] hotplug_event+0x17d/0x220
[<ffffffff81342880>] hotplug_event_work+0x30/0x70
[<ffffffff8136d665>] acpi_hotplug_work_fn+0x18/0x24
[<ffffffff81061331>] process_one_work+0x261/0x450
[<ffffffff81061a7e>] worker_thread+0x21e/0x370
[<ffffffff81061860>] ? rescuer_thread+0x300/0x300
[<ffffffff81068342>] kthread+0xd2/0xe0
[<ffffffff81068270>] ? flush_kthread_worker+0x70/0x70
[<ffffffff816c19bc>] ret_from_fork+0x7c/0xb0
[<ffffffff81068270>] ? flush_kthread_worker+0x70/0x70
(Mika Westerberg sees them too in his tests).
Some investigation documented in kernel bug #65281 led me to the
conclusion that the source of the problem is the device_del() in
pci_stop_dev() as it now causes the sysfs directory of the device to be
removed recursively along with all of its subdirectories. That includes
the sysfs directory of the device's subordinate bus (dev->subordinate) and
its "power" group.
Consequently, when pci_remove_bus() is called for dev->subordinate in
pci_remove_bus_device(), it calls device_unregister(&bus->dev), but at this
point the sysfs directory of bus->dev doesn't exist any more and its
"power" group doesn't exist either. Thus, when dpm_sysfs_remove() called
from device_del() tries to remove that group, it triggers the above
warning.
That indicates a logical mistake in the design of
pci_stop_and_remove_bus_device(), which causes bus device objects to be
left behind their parents (bridge device objects) and can be fixed by
moving the device_del() from pci_stop_dev() into pci_destroy_dev(), so
pci_remove_bus() can be called for the device's subordinate bus before the
device itself is unregistered from the hierarchy. Still, the driver, if
any, should be detached from the device in pci_stop_dev(), so use
device_release_driver() directly from there.
References: https://bugzilla.kernel.org/show_bug.cgi?id=65281#c6
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/aer:
PCI/AER: Consolidate HEST error source parsers
PCI/AER: Ignore non-PCIe AER error sources in aer_hest_parse()
PCI/AER: Clean up error printing code a bit
PCI/AER: Add a TLP header print helper
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aer_hest_parse() and aer_hest_parse_aff() are almost identical. We use
aer_hest_parse() to check the ACPI_HEST_FIRMWARE_FIRST flag for a specific
device, and we use aer_hest_parse_aff() to check to see if any device sets
the flag.
This drops aer_hest_parse_aff() and enhances aer_hest_parse() so it
collects the union of the PCIe ACPI_HEST_FIRMWARE_FIRST flag settings when
no specific device is supplied.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Betty Dall <betty.dall@hp.com>
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aer_set_firmware_first() searches the HEST for an error source descriptor
matching the specified PCI device. It uses the apei_hest_parse() iterator
to call aer_hest_parse() for every descriptor in the HEST.
Previously, aer_hest_parse() incorrectly assumed every descriptor was for a
PCIe error source. This patch adds a check to avoid that error.
[bhelgaas: factor check into helper, use in aer_hest_parse_aff(), changelog]
Signed-off-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Save one indentation level in aer_print_error() for the generic case where
we have info->status of an error, disregard 80 cols rule a bit for the sake
of better readability, fix alignment.
No functionality change.
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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... and call it instead of duplicating the large printk format
statement.
No functionality change.
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/yijing-dev_is_pci:
alpha/PCI: Use dev_is_pci() to identify PCI devices
arm/PCI: Use dev_is_pci() to identify PCI devices
arm/PCI: Use dev_is_pci() to identify PCI devices
parisc/PCI: Use dev_is_pci() to identify PCI devices
sparc/PCI: Use dev_is_pci() to identify PCI devices
ia64/PCI: Use dev_is_pci() to identify PCI devices
x86/PCI: Use dev_is_pci() to identify PCI devices
PCI: Use dev_is_pci() to identify PCI devices
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Use dev_is_pci() instead of checking bus type directly.
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/misc:
PCI: Stop clearing bridge Secondary Status when setting up I/O aperture
PCI: Prevent bus conflicts while checking for bridge apertures
PCI: Drop "irq" param from *_restore_msi_irqs()
PCI/portdrv: Remove superfluous name cast
PCI: Clear NumVFs when disabling SR-IOV in sriov_init()
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pci_setup_bridge_io() accessed PCI_IO_BASE and PCI_IO_LIMIT using dword
(32-bit) reads and writes, which also access the Secondary Status register.
Since the Secondary Status register is in the upper 16 bits of the dword,
and we preserved those upper 16 bits, this had the effect of clearing any
of the write-1-to-clear bits that happened to be set in the Secondary
Status register.
That's not what we want, so use word (16-bit) accesses to update only
PCI_IO_BASE and PCI_IO_LIMIT.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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pci_bridge_check_ranges() determines whether the bridge supports an I/O
aperture and a prefetchable memory aperture.
Previously, if the I/O aperture was unsupported, disabled, or configured at
[io 0x0000-0x0fff], we wrote 0xf0 to PCI_IO_BASE and PCI_IO_LIMIT, which,
if the bridge supports it, enables the I/O aperture at [io 0xf000-0xffff].
The enabled aperture may conflict with other devices in the system.
Similarly, we wrote 0xfff0 to PCI_PREF_MEMORY_BASE and
PCI_PREF_MEMORY_LIMIT, which enables the prefetchable memory aperture at
[mem 0xfff00000-0xffffffff], and that may also conflict with other devices.
All we need to know is whether the base and limit registers are writable,
so we can use values that leave the apertures disabled, e.g., PCI_IO_BASE =
0xf0, PCI_IO_LIMIT = 0xe0, PCI_PREF_MEMORY_BASE = 0xfff0,
PCI_PREF_MEMORY_LIMIT = 0xffe0.
Writing non-zero values to both the base and limit registers means we
detect whether either or both are writable, as we did before.
Reported-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Based-on-patch-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Change x86_msi.restore_msi_irqs(struct pci_dev *dev, int irq) to
x86_msi.restore_msi_irqs(struct pci_dev *dev).
restore_msi_irqs() restores multiple MSI-X IRQs, so param 'int irq' is
unneeded. This makes code more consistent between vm and bare metal.
Dom0 MSI-X restore code can also be optimized as XEN only has a hypercall
to restore all MSI-X vectors at one time.
Tested-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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device_driver.name is "const char *"
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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When SR-IOV is disabled (VF Enable is cleared), NumVFs is not very useful,
so this patch clears it out to prevent confusing lspci output like that
below. We already clear NumVFs in sriov_disable(), and this does the same
when we disable SR-IOV as part of parsing the SR-IOV capability.
$ lspci -vvv -s 13:00.0
13:00.0 Ethernet controller: Intel Corporation 82599EB 10-Gigabit SFI/SFP+ Network Connection (rev 01)
Capabilities: [160 v1] Single Root I/O Virtualization (SR-IOV)
IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy+
Initial VFs: 64, Total VFs: 64, Number of VFs: 64, ...
[bhelgaas: changelog]
Signed-off-by: ethan.zhao <ethan.kernel@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* acpi-pci-pm:
PCI / ACPI: Install wakeup notify handlers for all PCI devs with ACPI
* acpi-pci-hotplug:
ACPIPHP / radeon / nouveau: Fix VGA switcheroo problem related to hotplug
ACPI / PCI / hotplug: Avoid warning when _ADR not present
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The changes in the ACPI-based PCI hotplug (ACPIPHP) subsystem made
during the 3.12 development cycle uncovered a problem with VGA
switcheroo that on some systems, when the device-specific method
(ATPX in the radeon case, _DSM in the nouveau case) is used to turn
off the discrete graphics, the BIOS generates ACPI hotplug events for
that device and those events cause ACPIPHP to attempt to remove the
device from the system (they are events for a device that was present
previously and is not present any more, so that's what should be done
according to the spec). Then, the system stops functioning correctly.
Since the hotplug events in question were simply silently ignored
previously, the least intrusive way to address that problem is to
make ACPIPHP ignore them again. For this purpose, introduce a new
ACPI device flag, no_hotplug, and modify ACPIPHP to ignore hotplug
events for PCI devices whose ACPI companions have that flag set.
Next, make the radeon and nouveau switcheroo detection code set the
no_hotplug flag for the discrete graphics' ACPI companion.
Fixes: bbd34fcdd1b2 (ACPI / hotplug / PCI: Register all devices under the given bridge)
References: https://bugzilla.kernel.org/show_bug.cgi?id=61891
References: https://bugzilla.kernel.org/show_bug.cgi?id=64891
Reported-and-tested-by: Mike Lothian <mike@fireburn.co.uk>
Reported-and-tested-by: <madcatx@atlas.cz>
Reported-and-tested-by: Joaquín Aramendía <samsagax@gmail.com>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: 3.12+ <stable@vger.kernel.org> # 3.12+
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acpiphp_enumerate_slots() walks ACPI namenamespace under
a PCI host bridge with callback register_slot().
register_slot() evaluates _ADR for all the device objects
and emits a warning message for any error. Some platforms
have _HID device objects (such as HPET and IPMI), which
trigger unnecessary warning messages.
This patch avoids emitting a warning message when a target
device object does not have _ADR.
Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Cc: 3.12+ <stable@vger.kernel.org> # 3.12+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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It turns out that some BIOSes don't report wakeup GPEs through
_PRW, but use them for signaling wakeup anyway, which causes GPE
storms to occur on some systems after resume from system suspend.
This issue has been uncovered by commit d2e5f0c16ad6 (ACPI / PCI:
Rework the setup and cleanup of device wakeup) during the 3.9
development cycle.
Work around the problem by installing wakeup notify handlers for all
PCI devices with ACPI support (i.e. having ACPI companions) regardless
of whether or not the BIOS reports ACPI wakeup support for them. The
presence of the wakeup notify handlers alone is not harmful in any
way if there are no events for them to handle (they are simply never
executed then), but on some systems they are needed to take care of
spurious events.
Fixes: d2e5f0c16ad6 (ACPI / PCI: Rework the setup and cleanup of device wakeup)
References: https://bugzilla.kernel.org/show_bug.cgi?id=63021
Reported-and-tested-by: Agustin Barto <abarto@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Pull networking fixes from David Miller:
1) Revert CHECKSUM_COMPLETE optimization in pskb_trim_rcsum(), I can't
figure out why it breaks things.
2) Fix comparison in netfilter ipset's hash_netnet4_data_equal(), it
was basically doing "x == x", from Dave Jones.
3) Freescale FEC driver was DMA mapping the wrong number of bytes, from
Sebastian Siewior.
4) Blackhole and prohibit routes in ipv6 were not doing the right thing
because their ->input and ->output methods were not being assigned
correctly. Now they behave properly like their ipv4 counterparts.
From Kamala R.
5) Several drivers advertise the NETIF_F_FRAGLIST capability, but
really do not support this feature and will send garbage packets if
fed fraglist SKBs. From Eric Dumazet.
6) Fix long standing user triggerable BUG_ON over loopback in RDS
protocol stack, from Venkat Venkatsubra.
7) Several not so common code paths can potentially try to invoke
packet scheduler actions that might be NULL without checking. Shore
things up by either 1) defining a method as mandatory and erroring
on registration if that method is NULL 2) defininig a method as
optional and the registration function hooks up a default
implementation when NULL is seen. From Jamal Hadi Salim.
8) Fix fragment detection in xen-natback driver, from Paul Durrant.
9) Kill dangling enter_memory_pressure method in cg_proto ops, from
Eric W Biederman.
10) SKBs that traverse namespaces should have their local_df cleared,
from Hannes Frederic Sowa.
11) IOCB file position is not being updated by macvtap_aio_read() and
tun_chr_aio_read(). From Zhi Yong Wu.
12) Don't free virtio_net netdev before releasing all of the NAPI
instances. From Andrey Vagin.
13) Procfs entry leak in xt_hashlimit, from Sergey Popovich.
14) IPv6 routes that are no cached routes should not count against the
garbage collection limits. We had this almost right, but were
missing handling addrconf generated routes properly. From Hannes
Frederic Sowa.
15) fib{4,6}_rule_suppress() have to consider potentially seeing NULL
route info when they are called, from Stefan Tomanek.
16) TUN and MACVTAP have had truncated packet signalling for some time,
fix from Jason Wang.
17) Fix use after frrr in __udp4_lib_rcv(), from Eric Dumazet.
18) xen-netback does not interpret the NAPI budget properly for TX work,
fix from Paul Durrant.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (132 commits)
igb: Fix for issue where values could be too high for udelay function.
i40e: fix null dereference
xen-netback: fix gso_prefix check
net: make neigh_priv_len in struct net_device 16bit instead of 8bit
drivers: net: cpsw: fix for cpsw crash when build as modules
xen-netback: napi: don't prematurely request a tx event
xen-netback: napi: fix abuse of budget
sch_tbf: use do_div() for 64-bit divide
udp: ipv4: must add synchronization in udp_sk_rx_dst_set()
net:fec: remove duplicate lines in comment about errata ERR006358
Revert "8390 : Replace ei_debug with msg_enable/NETIF_MSG_* feature"
8390 : Replace ei_debug with msg_enable/NETIF_MSG_* feature
xen-netback: make sure skb linear area covers checksum field
net: smc91x: Fix device tree based configuration so it's usable
udp: ipv4: fix potential use after free in udp_v4_early_demux()
macvtap: signal truncated packets
tun: unbreak truncated packet signalling
net: sched: htb: fix the calculation of quantum
net: sched: tbf: fix the calculation of max_size
micrel: add support for KSZ8041RNLI
...
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