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1Device instance to test mapping
2intel_ifs_0 -> Scan Test
3intel_ifs_1 -> Array BIST test
4
5What: /sys/devices/virtual/misc/intel_ifs_<N>/run_test
6Date: Nov 16 2022
7KernelVersion: 6.2
8Contact: "Jithu Joseph" <jithu.joseph@intel.com>
9Description: Write <cpu#> to trigger IFS test for one online core.
10 Note that the test is per core. The cpu# can be
11 for any thread on the core. Running on one thread
12 completes the test for the core containing that thread.
13 Example: to test the core containing cpu5: echo 5 >
14 /sys/devices/virtual/misc/intel_ifs_<N>/run_test
15Devices: all
16
17What: /sys/devices/virtual/misc/intel_ifs_<N>/status
18Date: Nov 16 2022
19KernelVersion: 6.2
20Contact: "Jithu Joseph" <jithu.joseph@intel.com>
21Description: The status of the last test. It can be one of "pass", "fail"
22 or "untested".
23Devices: all
24
25What: /sys/devices/virtual/misc/intel_ifs_<N>/details
26Date: Nov 16 2022
27KernelVersion: 6.2
28Contact: "Jithu Joseph" <jithu.joseph@intel.com>
29Description: Additional information regarding the last test. The details file reports
30 the hex value of the STATUS MSR for this test. Note that the error_code field
31 may contain driver defined software code not defined in the Intel SDM.
32Devices: all
33
34What: /sys/devices/virtual/misc/intel_ifs_<N>/image_version
35Date: Nov 16 2022
36KernelVersion: 6.2
37Contact: "Jithu Joseph" <jithu.joseph@intel.com>
38Description: Version (hexadecimal) of loaded IFS test image. If no test image
39 is loaded reports "none". Only present for device instances where a test image
40 is applicable.
41Devices: intel_ifs_0
42
43What: /sys/devices/virtual/misc/intel_ifs_<N>/current_batch
44Date: Nov 16 2022
45KernelVersion: 6.2
46Contact: "Jithu Joseph" <jithu.joseph@intel.com>
47Description: Write a number less than or equal to 0xff to load an IFS test image.
48 The number written treated as the 2 digit suffix in the following file name:
49 /lib/firmware/intel/ifs_<N>/ff-mm-ss-02x.scan
50 Reading the file will provide the suffix of the currently loaded IFS test image.
51 This file is present only for device instances where a test image is applicable.
52Devices: intel_ifs_0