Linux kernel mirror (for testing)
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1What: /sys/kernel/debug/qat_<device>_<BDF>/fw_counters
2Date: November 2023
3KernelVersion: 6.6
4Contact: qat-linux@intel.com
5Description: (RO) Read returns the number of requests sent to the FW and the number of responses
6 received from the FW for each Acceleration Engine
7 Reported firmware counters::
8
9 <N>: Number of requests sent from Acceleration Engine N to FW and responses
10 Acceleration Engine N received from FW
11
12What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/config
13Date: November 2023
14KernelVersion: 6.6
15Contact: qat-linux@intel.com
16Description: (RW) Read returns value of the Heartbeat update period.
17 Write to the file changes this period value.
18
19 This period should reflect planned polling interval of device
20 health status. High frequency Heartbeat monitoring wastes CPU cycles
21 but minimizes the customer’s system downtime. Also, if there are
22 large service requests that take some time to complete, high frequency
23 Heartbeat monitoring could result in false reports of unresponsiveness
24 and in those cases, period needs to be increased.
25
26 This parameter is effective only for c3xxx, c62x, dh895xcc devices.
27 4xxx has this value internally fixed to 200ms.
28
29 Default value is set to 500. Minimal allowed value is 200.
30 All values are expressed in milliseconds.
31
32What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/queries_failed
33Date: November 2023
34KernelVersion: 6.6
35Contact: qat-linux@intel.com
36Description: (RO) Read returns the number of times the device became unresponsive.
37
38 Attribute returns value of the counter which is incremented when
39 status query results negative.
40
41What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/queries_sent
42Date: November 2023
43KernelVersion: 6.6
44Contact: qat-linux@intel.com
45Description: (RO) Read returns the number of times the control process checked
46 if the device is responsive.
47
48 Attribute returns value of the counter which is incremented on
49 every status query.
50
51What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/status
52Date: November 2023
53KernelVersion: 6.6
54Contact: qat-linux@intel.com
55Description: (RO) Read returns the device health status.
56
57 Returns 0 when device is healthy or -1 when is unresponsive
58 or the query failed to send.
59
60 The driver does not monitor for Heartbeat. It is left for a user
61 to poll the status periodically.
62
63What: /sys/kernel/debug/qat_<device>_<BDF>/pm_status
64Date: January 2024
65KernelVersion: 6.7
66Contact: qat-linux@intel.com
67Description: (RO) Read returns power management information specific to the
68 QAT device.
69
70 This attribute is only available for qat_4xxx devices.
71
72What: /sys/kernel/debug/qat_<device>_<BDF>/cnv_errors
73Date: January 2024
74KernelVersion: 6.7
75Contact: qat-linux@intel.com
76Description: (RO) Read returns, for each Acceleration Engine (AE), the number
77 of errors and the type of the last error detected by the device
78 when performing verified compression.
79 Reported counters::
80
81 <N>: Number of Compress and Verify (CnV) errors and type
82 of the last CnV error detected by Acceleration
83 Engine N.