1 Device instance to test mapping 2 intel_ifs_0 -> Scan Test 3 intel_ifs_1 -> Array BIST test 4 5 What: /sys/devices/virtual/misc/intel_ifs_<N>/run_test 6 Date: Nov 16 2022 7 KernelVersion: 6.2 8 Contact: "Jithu Joseph" <jithu.joseph@intel.com> 9 Description: 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 15 Devices: all 16 17 What: /sys/devices/virtual/misc/intel_ifs_<N>/status 18 Date: Nov 16 2022 19 KernelVersion: 6.2 20 Contact: "Jithu Joseph" <jithu.joseph@intel.com> 21 Description: The status of the last test. It can be one of "pass", "fail" 22 or "untested". 23 Devices: all 24 25 What: /sys/devices/virtual/misc/intel_ifs_<N>/details 26 Date: Nov 16 2022 27 KernelVersion: 6.2 28 Contact: "Jithu Joseph" <jithu.joseph@intel.com> 29 Description: 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. 32 Devices: all 33 34 What: /sys/devices/virtual/misc/intel_ifs_<N>/image_version 35 Date: Nov 16 2022 36 KernelVersion: 6.2 37 Contact: "Jithu Joseph" <jithu.joseph@intel.com> 38 Description: 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. 41 Devices: intel_ifs_0 42 43 What: /sys/devices/virtual/misc/intel_ifs_<N>/current_batch 44 Date: Nov 16 2022 45 KernelVersion: 6.2 46 Contact: "Jithu Joseph" <jithu.joseph@intel.com> 47 Description: 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. 52 Devices: intel_ifs_0
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