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authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-16 09:21:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-16 09:21:54 -0700
commit4e31843f681c34f7185e7d169fe627c9d891ce2c (patch)
tree7717ffdea5621cb68edb746bb21f6acd32f49aa9 /Documentation/ABI
parentf91e654474d413201ae578820fb63f8a811f6c4e (diff)
parentfa687fb9ced47b97bd22297366e788dac1927dd7 (diff)
downloadlinux-4e31843f681c34f7185e7d169fe627c9d891ce2c.tar.bz2
Merge tag 'pci-v4.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci updates from Bjorn Helgaas: - Decode AER errors with names similar to "lspci" (Tyler Baicar) - Expose AER statistics in sysfs (Rajat Jain) - Clear AER status bits selectively based on the type of recovery (Oza Pawandeep) - Honor "pcie_ports=native" even if HEST sets FIRMWARE_FIRST (Alexandru Gagniuc) - Don't clear AER status bits if we're using the "Firmware-First" strategy where firmware owns the registers (Alexandru Gagniuc) - Use sysfs_match_string() to simplify ASPM sysfs parsing (Andy Shevchenko) - Remove unnecessary includes of <linux/pci-aspm.h> (Bjorn Helgaas) - Defer DPC event handling to work queue (Keith Busch) - Use threaded IRQ for DPC bottom half (Keith Busch) - Print AER status while handling DPC events (Keith Busch) - Work around IDT switch ACS Source Validation erratum (James Puthukattukaran) - Emit diagnostics for all cases of PCIe Link downtraining (Links operating slower than they're capable of) (Alexandru Gagniuc) - Skip VFs when configuring Max Payload Size (Myron Stowe) - Reduce Root Port Max Payload Size if necessary when hot-adding a device below it (Myron Stowe) - Simplify SHPC existence/permission checks (Bjorn Helgaas) - Remove hotplug sample skeleton driver (Lukas Wunner) - Convert pciehp to threaded IRQ handling (Lukas Wunner) - Improve pciehp tolerance of missed events and initially unstable links (Lukas Wunner) - Clear spurious pciehp events on resume (Lukas Wunner) - Add pciehp runtime PM support, including for Thunderbolt controllers (Lukas Wunner) - Support interrupts from pciehp bridges in D3hot (Lukas Wunner) - Mark fall-through switch cases before enabling -Wimplicit-fallthrough (Gustavo A. R. Silva) - Move DMA-debug PCI init from arch code to PCI core (Christoph Hellwig) - Fix pci_request_irq() usage of IRQF_ONESHOT when no handler is supplied (Heiner Kallweit) - Unify PCI and DMA direction #defines (Shunyong Yang) - Add PCI_DEVICE_DATA() macro (Andy Shevchenko) - Check for VPD completion before checking for timeout (Bert Kenward) - Limit Netronome NFP5000 config space size to work around erratum (Jakub Kicinski) - Set IRQCHIP_ONESHOT_SAFE for PCI MSI irqchips (Heiner Kallweit) - Document ACPI description of PCI host bridges (Bjorn Helgaas) - Add "pci=disable_acs_redir=" parameter to disable ACS redirection for peer-to-peer DMA support (we don't have the peer-to-peer support yet; this is just one piece) (Logan Gunthorpe) - Clean up devm_of_pci_get_host_bridge_resources() resource allocation (Jan Kiszka) - Fixup resizable BARs after suspend/resume (Christian König) - Make "pci=earlydump" generic (Sinan Kaya) - Fix ROM BAR access routines to stay in bounds and check for signature correctly (Rex Zhu) - Add DMA alias quirk for Microsemi Switchtec NTB (Doug Meyer) - Expand documentation for pci_add_dma_alias() (Logan Gunthorpe) - To avoid bus errors, enable PASID only if entire path supports End-End TLP prefixes (Sinan Kaya) - Unify slot and bus reset functions and remove hotplug knowledge from callers (Sinan Kaya) - Add Function-Level Reset quirks for Intel and Samsung NVMe devices to fix guest reboot issues (Alex Williamson) - Add function 1 DMA alias quirk for Marvell 88SS9183 PCIe SSD Controller (Bjorn Helgaas) - Remove Xilinx AXI-PCIe host bridge arch dependency (Palmer Dabbelt) - Remove Aardvark outbound window configuration (Evan Wang) - Fix Aardvark bridge window sizing issue (Zachary Zhang) - Convert Aardvark to use pci_host_probe() to reduce code duplication (Thomas Petazzoni) - Correct the Cadence cdns_pcie_writel() signature (Alan Douglas) - Add Cadence support for optional generic PHYs (Alan Douglas) - Add Cadence power management ops (Alan Douglas) - Remove redundant variable from Cadence driver (Colin Ian King) - Add Kirin MSI support (Xiaowei Song) - Drop unnecessary root_bus_nr setting from exynos, imx6, keystone, armada8k, artpec6, designware-plat, histb, qcom, spear13xx (Shawn Guo) - Move link notification settings from DesignWare core to individual drivers (Gustavo Pimentel) - Add endpoint library MSI-X interfaces (Gustavo Pimentel) - Correct signature of endpoint library IRQ interfaces (Gustavo Pimentel) - Add DesignWare endpoint library MSI-X callbacks (Gustavo Pimentel) - Add endpoint library MSI-X test support (Gustavo Pimentel) - Remove unnecessary GFP_ATOMIC from Hyper-V "new child" allocation (Jia-Ju Bai) - Add more devices to Broadcom PAXC quirk (Ray Jui) - Work around corrupted Broadcom PAXC config space to enable SMMU and GICv3 ITS (Ray Jui) - Disable MSI parsing to work around broken Broadcom PAXC logic in some devices (Ray Jui) - Hide unconfigured functions to work around a Broadcom PAXC defect (Ray Jui) - Lower iproc log level to reduce console output during boot (Ray Jui) - Fix mobiveil iomem/phys_addr_t type usage (Lorenzo Pieralisi) - Fix mobiveil missing include file (Lorenzo Pieralisi) - Add mobiveil Kconfig/Makefile support (Lorenzo Pieralisi) - Fix mvebu I/O space remapping issues (Thomas Petazzoni) - Use generic pci_host_bridge in mvebu instead of ARM-specific API (Thomas Petazzoni) - Whitelist VMD devices with fast interrupt handlers to avoid sharing vectors with slow handlers (Keith Busch) * tag 'pci-v4.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (153 commits) PCI/AER: Don't clear AER bits if error handling is Firmware-First PCI: Limit config space size for Netronome NFP5000 PCI/MSI: Set IRQCHIP_ONESHOT_SAFE for PCI-MSI irqchips PCI/VPD: Check for VPD access completion before checking for timeout PCI: Add PCI_DEVICE_DATA() macro to fully describe device ID entry PCI: Match Root Port's MPS to endpoint's MPSS as necessary PCI: Skip MPS logic for Virtual Functions (VFs) PCI: Add function 1 DMA alias quirk for Marvell 88SS9183 PCI: Check for PCIe Link downtraining PCI: Add ACS Redirect disable quirk for Intel Sunrise Point PCI: Add device-specific ACS Redirect disable infrastructure PCI: Convert device-specific ACS quirks from NULL termination to ARRAY_SIZE PCI: Add "pci=disable_acs_redir=" parameter for peer-to-peer support PCI: Allow specifying devices using a base bus and path of devfns PCI: Make specifying PCI devices in kernel parameters reusable PCI: Hide ACS quirk declarations inside PCI core PCI: Delay after FLR of Intel DC P3700 NVMe PCI: Disable Samsung SM961/PM961 NVMe before FLR PCI: Export pcie_has_flr() PCI: mvebu: Drop bogus comment above mvebu_pcie_map_registers() ...
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats122
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diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats b/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats
new file mode 100644
index 000000000000..4b0318c99507
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats
@@ -0,0 +1,122 @@
+==========================
+PCIe Device AER statistics
+==========================
+These attributes show up under all the devices that are AER capable. These
+statistical counters indicate the errors "as seen/reported by the device".
+Note that this may mean that if an endpoint is causing problems, the AER
+counters may increment at its link partner (e.g. root port) because the
+errors may be "seen" / reported by the link partner and not the
+problematic endpoint itself (which may report all counters as 0 as it never
+saw any problems).
+
+Where: /sys/bus/pci/devices/<dev>/aer_dev_correctable
+Date: July 2018
+Kernel Version: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: List of correctable errors seen and reported by this
+ PCI device using ERR_COR. Note that since multiple errors may
+ be reported using a single ERR_COR message, thus
+ TOTAL_ERR_COR at the end of the file may not match the actual
+ total of all the errors in the file. Sample output:
+-------------------------------------------------------------------------
+localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_correctable
+Receiver Error 2
+Bad TLP 0
+Bad DLLP 0
+RELAY_NUM Rollover 0
+Replay Timer Timeout 0
+Advisory Non-Fatal 0
+Corrected Internal Error 0
+Header Log Overflow 0
+TOTAL_ERR_COR 2
+-------------------------------------------------------------------------
+
+Where: /sys/bus/pci/devices/<dev>/aer_dev_fatal
+Date: July 2018
+Kernel Version: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: List of uncorrectable fatal errors seen and reported by this
+ PCI device using ERR_FATAL. Note that since multiple errors may
+ be reported using a single ERR_FATAL message, thus
+ TOTAL_ERR_FATAL at the end of the file may not match the actual
+ total of all the errors in the file. Sample output:
+-------------------------------------------------------------------------
+localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_fatal
+Undefined 0
+Data Link Protocol 0
+Surprise Down Error 0
+Poisoned TLP 0
+Flow Control Protocol 0
+Completion Timeout 0
+Completer Abort 0
+Unexpected Completion 0
+Receiver Overflow 0
+Malformed TLP 0
+ECRC 0
+Unsupported Request 0
+ACS Violation 0
+Uncorrectable Internal Error 0
+MC Blocked TLP 0
+AtomicOp Egress Blocked 0
+TLP Prefix Blocked Error 0
+TOTAL_ERR_FATAL 0
+-------------------------------------------------------------------------
+
+Where: /sys/bus/pci/devices/<dev>/aer_dev_nonfatal
+Date: July 2018
+Kernel Version: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: List of uncorrectable nonfatal errors seen and reported by this
+ PCI device using ERR_NONFATAL. Note that since multiple errors
+ may be reported using a single ERR_FATAL message, thus
+ TOTAL_ERR_NONFATAL at the end of the file may not match the
+ actual total of all the errors in the file. Sample output:
+-------------------------------------------------------------------------
+localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_nonfatal
+Undefined 0
+Data Link Protocol 0
+Surprise Down Error 0
+Poisoned TLP 0
+Flow Control Protocol 0
+Completion Timeout 0
+Completer Abort 0
+Unexpected Completion 0
+Receiver Overflow 0
+Malformed TLP 0
+ECRC 0
+Unsupported Request 0
+ACS Violation 0
+Uncorrectable Internal Error 0
+MC Blocked TLP 0
+AtomicOp Egress Blocked 0
+TLP Prefix Blocked Error 0
+TOTAL_ERR_NONFATAL 0
+-------------------------------------------------------------------------
+
+============================
+PCIe Rootport AER statistics
+============================
+These attributes show up under only the rootports (or root complex event
+collectors) that are AER capable. These indicate the number of error messages as
+"reported to" the rootport. Please note that the rootports also transmit
+(internally) the ERR_* messages for errors seen by the internal rootport PCI
+device, so these counters include them and are thus cumulative of all the error
+messages on the PCI hierarchy originating at that root port.
+
+Where: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_cor
+Date: July 2018
+Kernel Version: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: Total number of ERR_COR messages reported to rootport.
+
+Where: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_fatal
+Date: July 2018
+Kernel Version: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: Total number of ERR_FATAL messages reported to rootport.
+
+Where: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_nonfatal
+Date: July 2018
+Kernel Version: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: Total number of ERR_NONFATAL messages reported to rootport.