diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2013-04-11 03:44:39 +0400 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-04-15 21:16:15 +0400 |
| commit | 75c6f0ab480657269b5014e0e457c7b18ba8597e (patch) | |
| tree | 8e3625f894c0c0ea5706096a47639932b77b31be /drivers/dma/ioat/registers.h | |
| parent | d302398da99956a329c467f195b50d5aaf38fb75 (diff) | |
| download | linux-75c6f0ab480657269b5014e0e457c7b18ba8597e.tar.xz | |
ioatdma: Adding write back descriptor error status support for ioatdma 3.3
v3.3 provides support for write back descriptor error status. This allows
reporting of errors in a descriptor field. In supporting this, certain
errors such as P/Q validation errors no longer halts the channel. The DMA
engine can continue to execute until the end of the chain and allow software
to report the "errors" up the stack. We are also going to mask those error
interrupts and handle them when the "chain" has completed at the end.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ioat/registers.h')
| -rw-r--r-- | drivers/dma/ioat/registers.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/ioat/registers.h b/drivers/dma/ioat/registers.h index efdd47e47b82..2f1cfa0f1f47 100644 --- a/drivers/dma/ioat/registers.h +++ b/drivers/dma/ioat/registers.h @@ -79,6 +79,7 @@ #define IOAT_CAP_APIC 0x00000080 #define IOAT_CAP_XOR 0x00000100 #define IOAT_CAP_PQ 0x00000200 +#define IOAT_CAP_DWBES 0x00002000 #define IOAT_CAP_RAID16SS 0x00020000 #define IOAT_CHANNEL_MMIO_SIZE 0x80 /* Each Channel MMIO space is this size */ |