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Diffstat (limited to 'Documentation/ABI/testing/sysfs-platform-intel-ifs')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-platform-intel-ifs | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-platform-intel-ifs b/Documentation/ABI/testing/sysfs-platform-intel-ifs new file mode 100644 index 000000000000..41b4d5b1e21c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-platform-intel-ifs @@ -0,0 +1,52 @@ +Device instance to test mapping +intel_ifs_0 -> Scan Test +intel_ifs_1 -> Array BIST test + +What: /sys/devices/virtual/misc/intel_ifs_<N>/run_test +Date: Nov 16 2022 +KernelVersion: 6.2 +Contact: "Jithu Joseph" <jithu.joseph@intel.com> +Description: Write <cpu#> to trigger IFS test for one online core. + Note that the test is per core. The cpu# can be + for any thread on the core. Running on one thread + completes the test for the core containing that thread. + Example: to test the core containing cpu5: echo 5 > + /sys/devices/virtual/misc/intel_ifs_<N>/run_test +Devices: all + +What: /sys/devices/virtual/misc/intel_ifs_<N>/status +Date: Nov 16 2022 +KernelVersion: 6.2 +Contact: "Jithu Joseph" <jithu.joseph@intel.com> +Description: The status of the last test. It can be one of "pass", "fail" + or "untested". +Devices: all + +What: /sys/devices/virtual/misc/intel_ifs_<N>/details +Date: Nov 16 2022 +KernelVersion: 6.2 +Contact: "Jithu Joseph" <jithu.joseph@intel.com> +Description: Additional information regarding the last test. The details file reports + the hex value of the STATUS MSR for this test. Note that the error_code field + may contain driver defined software code not defined in the Intel SDM. +Devices: all + +What: /sys/devices/virtual/misc/intel_ifs_<N>/image_version +Date: Nov 16 2022 +KernelVersion: 6.2 +Contact: "Jithu Joseph" <jithu.joseph@intel.com> +Description: Version (hexadecimal) of loaded IFS test image. If no test image + is loaded reports "none". Only present for device instances where a test image + is applicable. +Devices: intel_ifs_0 + +What: /sys/devices/virtual/misc/intel_ifs_<N>/current_batch +Date: Nov 16 2022 +KernelVersion: 6.2 +Contact: "Jithu Joseph" <jithu.joseph@intel.com> +Description: Write a number less than or equal to 0xff to load an IFS test image. + The number written treated as the 2 digit suffix in the following file name: + /lib/firmware/intel/ifs_<N>/ff-mm-ss-02x.scan + Reading the file will provide the suffix of the currently loaded IFS test image. + This file is present only for device instances where a test image is applicable. +Devices: intel_ifs_0 |