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/hw.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/hw.h')
| -rw-r--r-- | drivers/dma/ioat/hw.h | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/dma/ioat/hw.h b/drivers/dma/ioat/hw.h index d10570db6e7d..5ee57d402a6e 100644 --- a/drivers/dma/ioat/hw.h +++ b/drivers/dma/ioat/hw.h @@ -165,7 +165,17 @@ struct ioat_xor_ext_descriptor { }; struct ioat_pq_descriptor { - uint32_t size; + union { + uint32_t size; + uint32_t dwbes; + struct { + unsigned int rsvd:25; + unsigned int p_val_err:1; + unsigned int q_val_err:1; + unsigned int rsvd1:4; + unsigned int wbes:1; + } dwbes_f; + }; union { uint32_t ctl; struct { @@ -180,7 +190,10 @@ struct ioat_pq_descriptor { unsigned int hint:1; unsigned int p_disable:1; unsigned int q_disable:1; - unsigned int rsvd:11; + unsigned int rsvd2:2; + unsigned int wb_en:1; + unsigned int prl_en:1; + unsigned int rsvd3:7; #define IOAT_OP_PQ 0x89 #define IOAT_OP_PQ_VAL 0x8a #define IOAT_OP_PQ_16S 0xa0 |