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authorWu Hao <hao.wu@intel.com>2019-08-12 05:50:01 +0300
committerMoritz Fischer <mdf@kernel.org>2019-09-04 05:35:41 +0300
commit44d247534ff266404ccb44c2f52131a850348919 (patch)
treee366ea4405aead44577cb9c61018ba3910d13330 /Documentation/ABI
parent95844372f4f3df1852118438977e0048fdabc18b (diff)
downloadlinux-44d247534ff266404ccb44c2f52131a850348919.tar.xz
fpga: dfl: afu: add error reporting support.
Error reporting is one important private feature, it reports error detected on port and accelerated function unit (AFU). It introduces several sysfs interfaces to allow userspace to check and clear errors detected by hardware. Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-platform-dfl-port25
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-platform-dfl-port b/Documentation/ABI/testing/sysfs-platform-dfl-port
index c2660e4a246b..65658267fcc0 100644
--- a/Documentation/ABI/testing/sysfs-platform-dfl-port
+++ b/Documentation/ABI/testing/sysfs-platform-dfl-port
@@ -74,3 +74,28 @@ KernelVersion: 5.4
Contact: Wu Hao <hao.wu@intel.com>
Description: Read-only. Read this file to get the status of issued command
to userclck_freqcntrcmd.
+
+What: /sys/bus/platform/devices/dfl-port.0/errors/errors
+Date: August 2019
+KernelVersion: 5.4
+Contact: Wu Hao <hao.wu@intel.com>
+Description: Read-Write. Read this file to get errors detected on port and
+ Accelerated Function Unit (AFU). Write error code to this file
+ to clear errors. Write fails with -EINVAL if input parsing
+ fails or input error code doesn't match. Write fails with
+ -EBUSY or -ETIMEDOUT if error can't be cleared as hardware
+ in low power state (-EBUSY) or not respoding (-ETIMEDOUT).
+
+What: /sys/bus/platform/devices/dfl-port.0/errors/first_error
+Date: August 2019
+KernelVersion: 5.4
+Contact: Wu Hao <hao.wu@intel.com>
+Description: Read-only. Read this file to get the first error detected by
+ hardware.
+
+What: /sys/bus/platform/devices/dfl-port.0/errors/first_malformed_req
+Date: August 2019
+KernelVersion: 5.4
+Contact: Wu Hao <hao.wu@intel.com>
+Description: Read-only. Read this file to get the first malformed request
+ captured by hardware.