diff mbox series

[v3,11/11] platform/x86/intel/ifs: add ABI documentation for IFS

Message ID 20220419163859.2228874-12-tony.luck@intel.com (mailing list archive)
State Superseded, archived
Headers show
Series Introduce In Field Scan driver | expand

Commit Message

Luck, Tony April 19, 2022, 4:38 p.m. UTC 
From: Jithu Joseph <jithu.joseph@intel.com>

Add the sysfs attributes in ABI/testing for In-Field Scan.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Co-developed-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 .../ABI/testing/sysfs-platform-intel-ifs      | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-platform-intel-ifs
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Patch

diff --git a/Documentation/ABI/testing/sysfs-platform-intel-ifs b/Documentation/ABI/testing/sysfs-platform-intel-ifs
new file mode 100644
index 000000000000..7a753c9f2dd7
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-intel-ifs
@@ -0,0 +1,39 @@ 
+What:		/sys/devices/platform/intel_ifs.<N>/run_test
+Date:		April 13, 2022
+KernelVersion:	5.19
+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/platform/intel_ifs.<N>/run_test
+
+What:		/sys/devices/platform/intel_ifs.<N>/status
+Date:		April 13, 2022
+KernelVersion:	5.19
+Contact:	"Jithu Joseph" <jithu.joseph@intel.com>
+Description:	The status of the last test. It can be one of "pass", "fail"
+		or "untested".
+
+What:		/sys/devices/system/cpu/cpu#/ifs.<N>/details
+Date:		April 13, 2022
+KernelVersion:	5.19
+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
+		may contain driver defined software code not defined in the Intel SDM.
+
+What:		/sys/devices/platform/intel_ifs.<N>/image_version
+Date:		April 13, 2022
+KernelVersion:	5.19
+Contact:	"Jithu Joseph" <jithu.joseph@intel.com>
+Description:	Version (hexadecimal) of loaded IFS binary image. If no scan image
+		is loaded reports "none".
+
+What:		/sys/bus/platform/drivers/intel_ifs.<N>/reload
+Date:		April 13, 2022
+KernelVersion:	5.19
+Contact:	"Jithu Joseph" <jithu.joseph@intel.com>
+Description:	Write "1" > reload to reload IFS image from
+		/lib/firmware/intel/ifs/ff-mm-ss.scan.