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| author | Dave Jiang <dave.jiang@intel.com> | 2021-07-20 22:42:15 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-07-28 14:26:55 +0200 |
| commit | 125d10373ad991888c9e94d2da49bcc5ccba2127 (patch) | |
| tree | 9c50d1aba046d333aa257f14227dcb9bdb74d1f8 /Documentation/ABI | |
| parent | dmaengine: idxd: rotate portal address for better performance (diff) | |
| download | linux-125d10373ad991888c9e94d2da49bcc5ccba2127.tar.xz linux-125d10373ad991888c9e94d2da49bcc5ccba2127.zip | |
dmanegine: idxd: add software command status
Enabling device and wq returns standard errno and that does not provide
enough details to indicate what exactly failed. The hardware command status
is only 8bits. Expand the command status to 32bits and use the upper 16
bits to define software errors to provide more details on the exact
failure. Bit 31 will be used to indicate the error is software set as the
driver is using some of the spec defined hardware error as well.
Cc: Ramesh Thomas <ramesh.thomas@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/162681373579.1968485.5891788397526827892.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-driver-dma-idxd | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-driver-dma-idxd b/Documentation/ABI/stable/sysfs-driver-dma-idxd index adb0c93e8dfc..df4afbccf037 100644 --- a/Documentation/ABI/stable/sysfs-driver-dma-idxd +++ b/Documentation/ABI/stable/sysfs-driver-dma-idxd @@ -128,6 +128,8 @@ Date: Aug 28, 2020 KernelVersion: 5.10.0 Contact: dmaengine@vger.kernel.org Description: The last executed device administrative command's status/error. + Also last configuration error overloaded. + Writing to it will clear the status. What: /sys/bus/dsa/devices/wq<m>.<n>/block_on_fault Date: Oct 27, 2020 |