Merge quoted strings that are broken across lines into a single entity.
The compiler merges them anyway, but checkpatch complains about it, and
merging them makes it easier to grep for strings.
No functional change.
[bhelgaas: changelog, do the same for everything under drivers/pci]
Signed-off-by: Ryan Desfosses <ryan@desfo.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Fix various whitespace errors.
No functional change.
[bhelgaas: fix other similar problems]
Signed-off-by: Ryan Desfosses <ryan@desfo.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* pci/hotplug:
PCI: rphahp: Fix endianess issues
PCI: Allow hotplug service drivers to operate in polling mode
PCI: pciehp: Acknowledge spurious "cmd completed" event
PCI: pciehp: Use PCI_EXP_SLTCAP_PSN define
PCI: hotplug: Remove unnecessary "dev->bus" test
* pci/msi:
GenWQE: Use pci_enable_msi_exact() instead of pci_enable_msi_block()
PCI/MSI: Simplify populate_msi_sysfs()
PCI/portdrv: Use pci_enable_msix_exact() instead of pci_enable_msix()
* pci/virtualization:
PCI: Add Patsburg (X79) to Intel PCH root port ACS quirk
* pci/misc:
PCI: Fix use of uninitialized MPS value
PCI: Remove dead code
MAINTAINERS: Add arch/x86/kernel/quirks.c to PCI file patterns
PCI: Remove unnecessary __ref annotations
PCI: Fail new_id for vendor/device values already built into driver
PCI: Add new ID for Intel GPU "spurious interrupt" quirk
PCI: Update my email address
PCI: Fix incorrect vgaarb conditional in WARN_ON()
PCI: Use designated initialization in PCI_VDEVICE
PCI: Remove old serial device IDs
PCI: Remove unnecessary includes of <linux/init.h>
powerpc/PCI: Fix NULL dereference in sys_pciconfig_iobase() list traversal
Today the PCIe port bus driver disables the Hot-plug service if the port
device does not have the capability to generate interrupts. However, a
user must be able to use the "pciehp_poll_mode" parameter to use the pciehp
in polling method in such a case. Today it is not possible.
This patch allows a hotplug service driver to decide whether or not it
would like to continue in the absence of interrupts.
Signed-off-by: Rajat Jain <rajatxjain@gmail.com>
Signed-off-by: Rajat Jain <rajatjain@juniper.net>
Signed-off-by: Guenter Roeck <groeck@juniper.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
As result of deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers using these two
interfaces need to be updated to use the new pci_enable_msi_range() or
pci_enable_msi_exact() and pci_enable_msix_range() or
pci_enable_msix_exact() interfaces.
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* pci/aer:
PCI/AER: Support ACPI HEST AER error sources for PCI domains other than 0
ACPICA: Add helper macros to extract bus/segment numbers from HEST table.
In the discussion for this set of patches [link below], Bjorn Helgaas
pointed out that the ACPI HEST AER error sources do not have the PCIe
segment number associated with the bus. I worked with the ACPI spec and
got this change to definition of the "Bus" field into the recently released
ACPI Spec 5.0a section 18.3.2.3-5:
Identifies the PCI Bus and Segment of the device. The Bus is encoded in
bits 0-7. For systems that expose multiple PCI segment groups, the
segment number is encoded in bits 8-23 and bits 24-31 must be zero. For
systems that do not expose multiple PCI segment groups, bits 8-31 must be
zero. If the GLOBAL flag is specified, this field is ignored.
This patch makes use of the new definition in the only place in the kernel
that uses the acpi_hest_aer_common's bus field.
This depends on 36f3615152 ("ACPICA: Add helper macros to extract
bus/segment numbers from HEST table.")
Link: http://lkml.kernel.org/r/1370542251-27387-1-git-send-email-betty.dall@hp.com
Signed-off-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
My philosophy is unused code is dead code. And dead code is subject to bit
rot and is a likely source of bugs. Use it or lose it.
This reverts part of 3e1b16002a ("ACPI/PCI: PCIe ASPM _OSC support
capabilities called when root bridge added"), removing this interface:
pcie_aspm_enabled()
[bhelgaas: split to separate patch]
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Andrew Patterson <andrew.patterson@hp.com>
This creates an MSI-X counterpart for pci_msi_vec_count(). Device drivers
can use this function to obtain maximum number of MSI-X interrupts the
device supports and use that number in a subsequent call to
pci_enable_msix().
pci_msix_vec_count() supersedes pci_msix_table_size() and returns a
negative errno if device does not support MSI-X interrupts. After this
update, callers must always check the returned value.
The only user of pci_msix_table_size() was the PCI-Express port driver,
which is also updated by this change.
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Previously pcie_device_init() called get_device() if device_register() for
the new pcie_device succeeded, and remove_iter() called put_device() when
removing before unregistering the device.
But device_register() already increments the reference count in
device_add(), so we don't need to do it again here.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This is required so that we give up the last reference to the device.
Removed the kfree() as put_device will result in release_pcie_device()
being called and hence the container of the device will be kfree'd.
[bhelgaas: fix conflict after my previous cleanup]
Signed-off-by: Levente Kurusa <levex@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Make the straightline path the normal no-error path. Check for errors and
return them directly, instead of checking for success and putting the
normal path in an "if" body.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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>
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>
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>
... 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>
The pcie_portdrv .probe() method calls pci_enable_device() once, in
pcie_port_device_register(), but the .remove() method calls
pci_disable_device() twice, in pcie_port_device_remove() and in
pcie_portdrv_remove().
That causes a "disabling already-disabled device" warning when removing a
PCIe port device. This happens all the time when removing Thunderbolt
devices, but is also easy to reproduce with, e.g.,
"echo 0000:00:1c.3 > /sys/bus/pci/drivers/pcieport/unbind"
This patch removes the disable from pcie_portdrv_remove().
[bhelgaas: changelog, tag for stable]
Reported-by: David Bulkow <David.Bulkow@stratus.com>
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v2.6.32+
This patch enhances the type safety for the kfifo API. It is now safe
to put const data into a non const FIFO and the API will now generate a
compiler warning when reading from the fifo where the destination
address is pointing to a const variable.
As a side effect the kfifo_put() does now expect the value of an element
instead a pointer to the element. This was suggested Russell King. It
make the handling of the kfifo_put easier since there is no need to
create a helper variable for getting the address of a pointer or to pass
integers of different sizes.
IMHO the API break is okay, since there are currently only six users of
kfifo_put().
The code is also cleaner by kicking out the "if (0)" expressions.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix whitespace, capitalization, and spelling errors. No functional change.
I know "busses" is not an error, but "buses" was more common, so I used it
consistently.
Signed-off-by: Marta Rybczynska <rybczynska@gmail.com> (pci_reset_bridge_secondary_bus())
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The pcie_ports parameter, which defaults to 'auto', allows a user
to specify if PCIe port services are disabled ('compat'), always
enabled ('native'), or only used when allowed by the BIOS
('auto').
Where CONFIG_ACPI isn't enabled, as is often the case for non
x86/ia64 platforms, the 'auto' behavior results in that of
'compat'. Thus in order to use port services on these platforms
'pcie_ports=native' must be added to the kernel command line.
This patch results in the 'native' behavior being followed where
'auto' is selected and ACPI is not enabled.
Signed-off-by: Andrew Murray <amurray@embedded-bits.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
One PCI bus reset function to rule them all.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Convert pciehp to be builtin only, with no module option.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
The previous option title "PCI Express support" is confusing. The name
seems to imply this option is required to get PCIe support, which is not
true.
Fix it to "PCI Express Port Bus support" which is more accurate.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
PCI device hotplug
- Add pci_alloc_dev() interface (Gu Zheng)
- Add pci_bus_get()/put() for reference counting (Jiang Liu)
- Fix SR-IOV reference count issues (Jiang Liu)
- Remove unused acpi_pci_roots list (Jiang Liu)
MSI
- Conserve interrupt resources on x86 (Alexander Gordeev)
AER
- Force fatal severity when component has been reset (Betty Dall)
- Reset link below Root Port as well as Downstream Port (Betty Dall)
- Fix "Firmware first" flag setting (Bjorn Helgaas)
- Don't parse HEST for non-PCIe devices (Bjorn Helgaas)
ASPM
- Warn when we can't disable ASPM as driver requests (Bjorn Helgaas)
Miscellaneous
- Add CircuitCo PCI IDs (Darren Hart)
- Add AMD CZ SATA and SMBus PCI IDs (Shane Huang)
- Work around Ivytown NTB BAR size issue (Jon Mason)
- Detect invalid initial BAR values (Kevin Hao)
- Add pcibios_release_device() (Sebastian Ott)
- Fix powerpc & sparc PCI_UNKNOWN power state usage (Bjorn Helgaas)
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Merge tag 'pci-v3.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas:
"PCI device hotplug
- Add pci_alloc_dev() interface (Gu Zheng)
- Add pci_bus_get()/put() for reference counting (Jiang Liu)
- Fix SR-IOV reference count issues (Jiang Liu)
- Remove unused acpi_pci_roots list (Jiang Liu)
MSI
- Conserve interrupt resources on x86 (Alexander Gordeev)
AER
- Force fatal severity when component has been reset (Betty Dall)
- Reset link below Root Port as well as Downstream Port (Betty Dall)
- Fix "Firmware first" flag setting (Bjorn Helgaas)
- Don't parse HEST for non-PCIe devices (Bjorn Helgaas)
ASPM
- Warn when we can't disable ASPM as driver requests (Bjorn Helgaas)
Miscellaneous
- Add CircuitCo PCI IDs (Darren Hart)
- Add AMD CZ SATA and SMBus PCI IDs (Shane Huang)
- Work around Ivytown NTB BAR size issue (Jon Mason)
- Detect invalid initial BAR values (Kevin Hao)
- Add pcibios_release_device() (Sebastian Ott)
- Fix powerpc & sparc PCI_UNKNOWN power state usage (Bjorn Helgaas)"
* tag 'pci-v3.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (51 commits)
MAINTAINERS: Add ACPI folks for ACPI-related things under drivers/pci
PCI: Add CircuitCo vendor ID and subsystem ID
PCI: Use pdev->pm_cap instead of pci_find_capability(..,PCI_CAP_ID_PM)
PCI: Return early on allocation failures to unindent mainline code
PCI: Simplify IOV implementation and fix reference count races
PCI: Drop redundant setting of bus->is_added in virtfn_add_bus()
unicore32/PCI: Remove redundant call of pci_bus_add_devices()
m68k/PCI: Remove redundant call of pci_bus_add_devices()
PCI / ACPI / PM: Use correct power state strings in messages
PCI: Fix comment typo for pcie_pme_remove()
PCI: Rename pci_release_bus_bridge_dev() to pci_release_host_bridge_dev()
PCI: Fix refcount issue in pci_create_root_bus() error recovery path
ia64/PCI: Clean up pci_scan_root_bus() usage
PCI/AER: Reset link for devices below Root Port or Downstream Port
ACPI / APEI: Force fatal AER severity when component has been reset
PCI/AER: Remove "extern" from function declarations
PCI/AER: Move AER severity defines to aer.h
PCI/AER: Set dev->__aer_firmware_first only for matching devices
PCI/AER: Factor out HEST device type matching
PCI/AER: Don't parse HEST table for non-PCIe devices
...
* pci/betty-aer-v3:
PCI/AER: Reset link for devices below Root Port or Downstream Port
ACPI / APEI: Force fatal AER severity when component has been reset
PCI/AER: Remove "extern" from function declarations
PCI/AER: Move AER severity defines to aer.h
PCI/AER: Set dev->__aer_firmware_first only for matching devices
PCI/AER: Factor out HEST device type matching
PCI/AER: Don't parse HEST table for non-PCIe devices
When a PCIe device reports a fatal error, we reset the link leading
to it. Previously we only did this for devices below Downstream Ports,
not for devices directly below Root Ports.
This patch changes that so we reset the link leading to devices below
Root Ports just like we do for those below Downstream Ports.
[bhelgaas: changelog, keep dev_printk(KERN_DEBUG)]
Signed-off-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The function aer_recover_queue() is a public interface and the
severity argument uses #defines that are in the private header
pci/pcie/aer/aerdrv.h.
This patch moves the #defines from pci/pcie/aer/aerdrv.h to
include/linux/aer.h.
[bhelgaas: split "remove 'extern' from declarations" to another patch]
Signed-off-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Previously, we always updated info->firmware_first, even for HEST entries
that didn't match the device. Therefore, if the last HEST descriptor was
a PCIe structure that didn't match the device, we always cleared
dev->__aer_firmware_first.
Tested-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This factors out the matching of HEST structure type and PCIe device type
to improve readability. No functional change.
Tested-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
AER is a PCIe-only capability, so there's no point in trying to match
a HEST PCIe structure with a non-PCIe device.
Previously, a HEST global AER bridge entry (type 8) could incorrectly
match *any* bridge, even a legacy PCI-PCI bridge, and a non-global
HEST entry could match a legacy PCI device.
Tested-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The following warning was seen on 3.9 when a corrected PCIe error was being
handled by the AER subsystem.
WARNING: at .../drivers/pci/search.c:214 pci_get_dev_by_id+0x8a/0x90()
This occurred because a call to pci_get_domain_bus_and_slot() was added to
cper_print_pcie() to setup for the call to cper_print_aer(). The warning
showed up because cper_print_pcie() is called in an interrupt context and
pci_get* functions are not supposed to be called in that context.
The solution is to move the cper_print_aer() call out of the interrupt
context and into aer_recover_work_func() to avoid any warnings when calling
pci_get* functions.
Signed-off-by: Lance Ortiz <lance.ortiz@hp.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Some devices have hardware problems related to using ASPM. Drivers for
these devices use pci_disable_link_state() to prevent their device from
entering L0s or L1. But on platforms where the OS doesn't have permission
to manage ASPM, pci_disable_link_state() doesn't actually disable ASPM.
Windows has a similar mechanism ("PciASPMOptOut"), and when the OS doesn't
have control of ASPM, it doesn't actually disable ASPM either.
This patch just adds a warning in dmesg about the fact that
pci_disable_link_state() is doing nothing.
Reported-by: Emmanuel Grumbach <egrumbach@gmail.com>
Reference: https://lkml.kernel.org/r/CANUX_P3F5YhbZX3WGU-j1AGpbXb_T9Bis2ErhvKkFMtDvzatVQ@mail.gmail.com
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=57331
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* pci/cleanup:
PCI: Remove "extern" from function declarations
PCI: Warn about failures instead of "must_check" functions
PCI: Remove __must_check from definitions
PCI: Remove unused variables
PCI: Move cpci_hotplug_init() proto to header file
PCI: Make local functions/structs static
PCI: Fix missing prototype for pcie_port_acpi_setup()
Conflicts:
drivers/pci/hotplug/acpiphp.h
include/linux/pci.h
We had an inconsistent mix of using and omitting the "extern" keyword
on function declarations in header files. This removes them all.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* pci/misc:
PCI: Clean up quirk_io_region
PCI: Use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT
PCI: Use PCI_EXP_SLTCAP_PSN mask when extracting slot number
PCI: Remove unnecessary dependencies between PME and ACPI
[SCSI] mvumi: Use PCI_VENDOR_ID_MARVELL_EXT for 0x1b4b
[SCSI] mvsas: Use PCI_VENDOR_ID_MARVELL_EXT for 0x1b4b
ahci: Use PCI_VENDOR_ID_MARVELL_EXT for 0x1b4b
PCI: Define macro for Marvell vendor ID
PCI: Add MSI INTX_DISABLE quirks for AR8161/AR8162/AR8171/AR8172/E210X
PCI: aer_inject: Fix return values when device not found
PCIe PME doesn't depend on ACPI, so remove the #includes and
Kconfig dependency.
Based-on-patch-by: Andrew Murray <Andrew.Murray@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Ryan Desfosses