| 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). |
| |
| What: /sys/bus/pci/devices/<dev>/aer_dev_correctable |
| Date: July 2018 |
| KernelVersion: 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 |
| |
| What: /sys/bus/pci/devices/<dev>/aer_dev_fatal |
| Date: July 2018 |
| KernelVersion: 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 |
| |
| What: /sys/bus/pci/devices/<dev>/aer_dev_nonfatal |
| Date: July 2018 |
| KernelVersion: 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. |
| |
| What: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_cor |
| Date: July 2018 |
| KernelVersion: 4.19.0 |
| Contact: linux-pci@vger.kernel.org, rajatja@google.com |
| Description: Total number of ERR_COR messages reported to rootport. |
| |
| What: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_fatal |
| Date: July 2018 |
| KernelVersion: 4.19.0 |
| Contact: linux-pci@vger.kernel.org, rajatja@google.com |
| Description: Total number of ERR_FATAL messages reported to rootport. |
| |
| What: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_nonfatal |
| Date: July 2018 |
| KernelVersion: 4.19.0 |
| Contact: linux-pci@vger.kernel.org, rajatja@google.com |
| Description: Total number of ERR_NONFATAL messages reported to rootport. |
