diff options
| author | Eddie James <eajames@linux.ibm.com> | 2021-10-19 15:53:06 -0500 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2021-10-22 09:54:32 +1030 |
| commit | 4cf400e120b303c25fd378fb4286fa682e4e0a33 (patch) | |
| tree | 8ee6fe56d046fbe9a57cbfc58f83f2713651b3ac | |
| parent | 8ec3cc9fb51dc973ea6886cc6ba3dcea4eee98ec (diff) | |
docs: ABI: testing: Document the OCC hwmon FFDC binary interface
Add documentation for the new binary sysfs that will dump the SBEFIFO
FFDC.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20211019205307.36946-4-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-platform-devices-occ-hwmon | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-platform-devices-occ-hwmon b/Documentation/ABI/testing/sysfs-bus-platform-devices-occ-hwmon new file mode 100644 index 000000000000..b24d7ab0278f --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-platform-devices-occ-hwmon @@ -0,0 +1,13 @@ +What: /sys/bus/platform/devices/occ-hwmon.X/ffdc +KernelVersion: 5.15 +Contact: eajames@linux.ibm.com +Description: + Contains the First Failure Data Capture from the SBEFIFO + hardware, if there is any from a previous transfer. Otherwise, + the file is empty. The data is cleared when it's been + completely read by a user. As the name suggests, only the data + from the first error is saved, until it's cleared upon read. The OCC hwmon driver, running on + a Baseboard Management Controller (BMC), communicates with + POWER9 and up processors over the Self-Boot Engine (SBE) FIFO. + In many error conditions, the SBEFIFO will return error data + indicating the type of error and system state, etc. |