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Documentation/ABI: Update IFS ABI doc 

Array BIST test doesn't need an IFS test image to operate unlike
the SCAN test. Consequently current_batch and image_version
files are not applicable for Array BIST IFS device instance,
clarify this in the ABI doc.

Also given that multiple tests are supported, take the opportunity
to generalize descriptions wherever applicable.

Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20230322003359.213046-10-jithu.joseph@intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Jithu Joseph 2023-03-21 17:33:59 -07:00 committed by Hans de Goede
parent 2b965dc05d
commit 3a2f2756c5
1 changed files with 14 additions and 3 deletions
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17
Documentation/ABI/testing/sysfs-platform-intel-ifs
View File

@ -1,3 +1,7 @@
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
@ -8,6 +12,7 @@ Description: Write <cpu#> to trigger IFS test for one online core.
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
@ -15,21 +20,25 @@ 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 SCAN_STATUS MSR. Note that the error_code field
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 binary image. If no scan image
is loaded reports "none".
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
@ -39,3 +48,5 @@ 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