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:: 14 15 echo 5 > /sys/devices/virtual/misc/intel_ifs_<N>/run_test 16 17Devices: all 18 19What: /sys/devices/virtual/misc/intel_ifs_<N>/status 20Date: Nov 16 2022 21KernelVersion: 6.2 22Contact: "Jithu Joseph" <jithu.joseph@intel.com> 23Description: The status of the last test. It can be one of "pass", "fail" 24 or "untested". 25Devices: all 26 27What: /sys/devices/virtual/misc/intel_ifs_<N>/details 28Date: Nov 16 2022 29KernelVersion: 6.2 30Contact: "Jithu Joseph" <jithu.joseph@intel.com> 31Description: Additional information regarding the last test. The details file reports 32 the hex value of the STATUS MSR for this test. Note that the error_code field 33 may contain driver defined software code not defined in the Intel SDM. 34Devices: all 35 36What: /sys/devices/virtual/misc/intel_ifs_<N>/image_version 37Date: Nov 16 2022 38KernelVersion: 6.2 39Contact: "Jithu Joseph" <jithu.joseph@intel.com> 40Description: Version (hexadecimal) of loaded IFS test image. If no test image 41 is loaded reports "none". Only present for device instances where a test image 42 is applicable. 43Devices: intel_ifs_0 44 45What: /sys/devices/virtual/misc/intel_ifs_<N>/current_batch 46Date: Nov 16 2022 47KernelVersion: 6.2 48Contact: "Jithu Joseph" <jithu.joseph@intel.com> 49Description: Write a number less than or equal to 0xff to load an IFS test image. 50 The number written treated as the 2 digit suffix in the following file name: 51 /lib/firmware/intel/ifs_<N>/ff-mm-ss-02x.scan 52 Reading the file will provide the suffix of the currently loaded IFS test image. 53 This file is present only for device instances where a test image is applicable. 54Devices: intel_ifs_0 55