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2016-09-20PCI/AER: Remove duplicate AER severity translationTyler Baicar1-1/+1
Currently the AER severity is being translated twice in the code flow for PCIe errors. It is first translated in ghes_do_proc() before calling into the AER driver. Then it is translated again when the AER driver calls cper_print_aer(). This causes the severity that is used in cper_print_aer() to be incorrect. Remove the second translation that is in cper_print_aer() since this function is already receiving the correct AER severity. Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Borislav Petkov <bp@suse.de>
2015-12-23PCI/AER: include header fileSudip Mukherjee1-0/+1
We are having build failure with sparc allmodconfig with the error: drivers/nvme/host/pci.c:15:0: include/linux/aer.h: In function 'pci_enable_pcie_error_reporting': include/linux/aer.h:49:10: error: 'EINVAL' undeclared (first use in this function) The file aer.h is using the error values but they are defined in errno.h. Include errno.h so that we have the definitions of the error codes. Fixes: a0a3408ee614 ("NVMe: Add pci error handlers") Cc: Keith Busch <keith.busch@intel.com> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-09-17PCI/AER: Clear error status registers during enumeration and restoreTaku Izumi1-0/+5
AER errors might be recorded when powering-on devices. These errors can be ignored, so firmware usually clears them before the OS enumerates devices. However, firmware is not involved when devices are added via hotplug, so the OS may discover power-up errors that should be ignored. The same may happen when powering up devices when resuming after suspend. Clear the AER error status registers during enumeration and resume. [bhelgaas: changelog, remove repetitive comments] Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-09-04PCI/AER: Make <linux/aer.h> standalone includableThierry Reding1-0/+2
The header file references u16 and u32 types, but they are not defined in the header nor does the header pull in the necessary includes for them. This causes build breakage when the file is included without any of the dependencies being satisfied from somewhere else. Fix this by including linux/types.h (for u16 and u32). [bhelgaas: removed pci_dev declaration (already added by 5ccb8225abf2)] Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-07-30x86/ras: Fix build warnings in <linux/aer.h>Mike Qiu1-0/+2
Fix build warning due to a missing forward declaration in <linux/aer.h>. We need struct pci_dev to be forward declared so we can define pointers to it, but we don't need to pull in the whole definition. build log: In file included from include/ras/ras_event.h:11:0, from drivers/ras/ras.c:13: include/linux/aer.h:42:129: warning: ‘struct pci_dev’ declared inside parameter list [enabled by default] include/linux/aer.h:42:129: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] include/linux/aer.h:46:130: warning: ‘struct pci_dev’ declared inside parameter list [enabled by default] include/linux/aer.h:50:136: warning: ‘struct pci_dev’ declared inside parameter list [enabled by default] include/linux/aer.h:57:14: warning: ‘struct pci_dev’ declared inside parameter list [enabled by default] Signed-off-by: Mike Qiu <qiudayu@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/53d7dea511471321bb@agluck-desk.sc.intel.com Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-07-03Merge tag 'pci-v3.11-changes' of ↵Linus Torvalds1-9/+13
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 ...
2013-06-06PCI/AER: Remove "extern" from function declarationsBetty Dall1-8/+8
We had an inconsistent mix of using and omitting the "extern" keyword on function declarations in header files. This removes them all. [bhelgaas: split out from "move AER severity defines" patch] Signed-off-by: Betty Dall <betty.dall@hp.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-06-06PCI/AER: Move AER severity defines to aer.hBetty Dall1-0/+4
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>
2013-05-30aerdrv: Move cper_print_aer() call out of interrupt contextLance Ortiz1-2/+3
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>
2013-01-03aerdrv: Enhanced AER loggingLance Ortiz1-2/+2
This patch will provide a more reliable and easy way for user-space applications to have access to AER logs rather than reading them from the message buffer. It also provides a way to notify user-space when an AER event occurs. The aer driver is updated to generate a trace event of function 'aer_event' when a PCIe error is reported over the AER interface. The trace event was added to both the interrupt based aer path and the firmware first path. Signed-off-by: Lance Ortiz <lance.ortiz@hp.com> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Boris Petkov <bp@alien8.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-07-22PCI: PCIe AER: add aer_recover_queueHuang Ying1-0/+3
In addition to native PCIe AER, now APEI (ACPI Platform Error Interface) GHES (Generic Hardware Error Source) can be used to report PCIe AER errors too. To add support to APEI GHES PCIe AER recovery, aer_recover_queue is added to export the recovery function in native PCIe AER driver. Recoverable PCIe AER errors are reported via NMI in APEI GHES. Then APEI GHES uses irq_work to delay the error processing into an IRQ handler. But PCIe AER recovery can be very time-consuming, so aer_recover_queue, which can be used in IRQ handler, delays the real recovery action into the process context, that is, work queue. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-03-21ACPI, APEI, Add PCIe AER error information printing supportHuang Ying1-0/+24
The AER error information printing support is implemented in drivers/pci/pcie/aer/aer_print.c. So some string constants, functions and macros definitions can be re-used without being exported. The original PCIe AER error information printing function is not re-used directly because the overall format is quite different. And changing the original printing format may make some original users' scripts broken. Signed-off-by: Huang Ying <ying.huang@intel.com> CC: Jesse Barnes <jbarnes@virtuousgeek.org> CC: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-20PCI: fix AER capability checkYu Zhao1-1/+0
The 'use pci_find_ext_capability everywhere' cleanup brought a new bug, which makes the AER stop working. Fix it by actually using find_ext_cap instead of just find_cap. Drop the unused config space size define while we're at it. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20PCI: use pci_find_ext_capability everywhereJesse Barnes1-4/+0
Remove some open coded (and buggy) versions of pci_find_ext_capability in favor of the real routine in the PCI core. Tested-by: Tomasz Czernecki <czernecki@gmail.com> Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-04-20PCI: #if 0 pci_cleanup_aer_correct_error_status()Adrian Bunk1-5/+0
#if 0 the no longer used pci_cleanup_aer_correct_error_status(). Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-09-11PCI AER: fix warnings when PCIEAER=nRandy Dunlap1-5/+20
Fix warnings when CONFIG_PCIEAER=n: drivers/pci/pcie/portdrv_pci.c:105: warning: statement with no effect drivers/pci/pcie/portdrv_pci.c:226: warning: statement with no effect drivers/scsi/arcmsr/arcmsr_hba.c:352: warning: statement with no effect Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11PCI aer: add pci_cleanup_aer_correct_aer_statusStephen Hemminger1-0/+2
Function to clear bogus correctable errors. Analog to pci_aer_uncorrect_are_status. The Marvell chips seem to start out with a bogus value that needs to be cleared. Yanmin ported it to 2.6.22-rc4 by fixing a fuzz patch applying info. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Acked-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11PCI aer: fix stub return valuesStephen Hemminger1-4/+4
The stubs used when advanced error reporting is not enabled must have same return type as real functions. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Acked-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26PCI-Express AER implemetation: AER core and aerdriverZhang, Yanmin1-0/+24
Patch 3 implements the core part of PCI-Express AER and aerdrv port service driver. When a root port service device is probed, the aerdrv will call request_irq to register irq handler for AER error interrupt. When a device sends an PCI-Express error message to the root port, the root port will trigger an interrupt, by either MSI or IO-APIC, then kernel would run the irq handler. The handler collects root error status register and schedules a work. The work will call the core part to process the error based on its type (Correctable/non-fatal/fatal). As for Correctable errors, the patch chooses to just clear the correctable error status register of the device. As for the non-fatal error, the patch follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. As for the fatal error, the patch resets the pci-express link and follows generic PCI error handler rules to call the error callback functions of the endpoint's driver. If the device is a bridge, the patch chooses to broadcast the error to downstream devices. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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