1 PCIe Device AER statistics 2 -------------------------- 3 4 These attributes show up under all the devices that are AER capable. These 5 statistical counters indicate the errors "as seen/reported by the device". 6 Note that this may mean that if an endpoint is causing problems, the AER 7 counters may increment at its link partner (e.g. root port) because the 8 errors may be "seen" / reported by the link partner and not the 9 problematic endpoint itself (which may report all counters as 0 as it never 10 saw any problems). 11 12 What: /sys/bus/pci/devices/<dev>/aer_dev_correctable 13 Date: July 2018 14 KernelVersion: 4.19.0 15 Contact: linux-pci@vger.kernel.org, rajatja@google.com 16 Description: List of correctable errors seen and reported by this 17 PCI device using ERR_COR. Note that since multiple errors may 18 be reported using a single ERR_COR message, thus 19 TOTAL_ERR_COR at the end of the file may not match the actual 20 total of all the errors in the file. Sample output:: 21 22 localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_correctable 23 Receiver Error 2 24 Bad TLP 0 25 Bad DLLP 0 26 RELAY_NUM Rollover 0 27 Replay Timer Timeout 0 28 Advisory Non-Fatal 0 29 Corrected Internal Error 0 30 Header Log Overflow 0 31 TOTAL_ERR_COR 2 32 33 What: /sys/bus/pci/devices/<dev>/aer_dev_fatal 34 Date: July 2018 35 KernelVersion: 4.19.0 36 Contact: linux-pci@vger.kernel.org, rajatja@google.com 37 Description: List of uncorrectable fatal errors seen and reported by this 38 PCI device using ERR_FATAL. Note that since multiple errors may 39 be reported using a single ERR_FATAL message, thus 40 TOTAL_ERR_FATAL at the end of the file may not match the actual 41 total of all the errors in the file. Sample output:: 42 43 localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_fatal 44 Undefined 0 45 Data Link Protocol 0 46 Surprise Down Error 0 47 Poisoned TLP 0 48 Flow Control Protocol 0 49 Completion Timeout 0 50 Completer Abort 0 51 Unexpected Completion 0 52 Receiver Overflow 0 53 Malformed TLP 0 54 ECRC 0 55 Unsupported Request 0 56 ACS Violation 0 57 Uncorrectable Internal Error 0 58 MC Blocked TLP 0 59 AtomicOp Egress Blocked 0 60 TLP Prefix Blocked Error 0 61 TOTAL_ERR_FATAL 0 62 63 What: /sys/bus/pci/devices/<dev>/aer_dev_nonfatal 64 Date: July 2018 65 KernelVersion: 4.19.0 66 Contact: linux-pci@vger.kernel.org, rajatja@google.com 67 Description: List of uncorrectable nonfatal errors seen and reported by this 68 PCI device using ERR_NONFATAL. Note that since multiple errors 69 may be reported using a single ERR_FATAL message, thus 70 TOTAL_ERR_NONFATAL at the end of the file may not match the 71 actual total of all the errors in the file. Sample output:: 72 73 localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_nonfatal 74 Undefined 0 75 Data Link Protocol 0 76 Surprise Down Error 0 77 Poisoned TLP 0 78 Flow Control Protocol 0 79 Completion Timeout 0 80 Completer Abort 0 81 Unexpected Completion 0 82 Receiver Overflow 0 83 Malformed TLP 0 84 ECRC 0 85 Unsupported Request 0 86 ACS Violation 0 87 Uncorrectable Internal Error 0 88 MC Blocked TLP 0 89 AtomicOp Egress Blocked 0 90 TLP Prefix Blocked Error 0 91 TOTAL_ERR_NONFATAL 0 92 93 PCIe Rootport AER statistics 94 ---------------------------- 95 96 These attributes show up under only the rootports (or root complex event 97 collectors) that are AER capable. These indicate the number of error messages as 98 "reported to" the rootport. Please note that the rootports also transmit 99 (internally) the ERR_* messages for errors seen by the internal rootport PCI 100 device, so these counters include them and are thus cumulative of all the error 101 messages on the PCI hierarchy originating at that root port. 102 103 What: /sys/bus/pci/devices/<dev>/aer_rootport_total_err_cor 104 Date: July 2018 105 KernelVersion: 4.19.0 106 Contact: linux-pci@vger.kernel.org, rajatja@google.com 107 Description: Total number of ERR_COR messages reported to rootport. 108 109 What: /sys/bus/pci/devices/<dev>/aer_rootport_total_err_fatal 110 Date: July 2018 111 KernelVersion: 4.19.0 112 Contact: linux-pci@vger.kernel.org, rajatja@google.com 113 Description: Total number of ERR_FATAL messages reported to rootport. 114 115 What: /sys/bus/pci/devices/<dev>/aer_rootport_total_err_nonfatal 116 Date: July 2018 117 KernelVersion: 4.19.0 118 Contact: linux-pci@vger.kernel.org, rajatja@google.com 119 Description: Total number of ERR_NONFATAL messages reported to rootport.
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