diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 12:01:04 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:30:24 -0700 |
| commit | 4fb9b9e8d55880523db550043dfb204696dd0422 (patch) | |
| tree | 733a672aeb819bb8133b16329a6b5088cf9ee693 /drivers/dma/ioat/registers.h | |
| parent | 6df9183a153291a2585a8dfe67597fc18c201147 (diff) | |
ioat: cleanup completion status reads
The cleanup path makes an effort to only perform an atomic read of the
64-bit completion address. However in the 32-bit case it does not
matter if we read the upper-32 and lower-32 non-atomically because the
upper-32 will always be zero.
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ioat/registers.h')
| -rw-r--r-- | drivers/dma/ioat/registers.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/dma/ioat/registers.h b/drivers/dma/ioat/registers.h index 49bc277424f8..a83c7332125c 100644 --- a/drivers/dma/ioat/registers.h +++ b/drivers/dma/ioat/registers.h @@ -94,10 +94,10 @@ #define IOAT2_CHANSTS_OFFSET_HIGH 0x0C #define IOAT_CHANSTS_OFFSET_HIGH(ver) ((ver) < IOAT_VER_2_0 \ ? IOAT1_CHANSTS_OFFSET_HIGH : IOAT2_CHANSTS_OFFSET_HIGH) -#define IOAT_CHANSTS_COMPLETED_DESCRIPTOR_ADDR ~0x3F -#define IOAT_CHANSTS_SOFT_ERR 0x0000000000000010 -#define IOAT_CHANSTS_UNAFFILIATED_ERR 0x0000000000000008 -#define IOAT_CHANSTS_DMA_TRANSFER_STATUS 0x0000000000000007 +#define IOAT_CHANSTS_COMPLETED_DESCRIPTOR_ADDR (~0x3fULL) +#define IOAT_CHANSTS_SOFT_ERR 0x10ULL +#define IOAT_CHANSTS_UNAFFILIATED_ERR 0x8ULL +#define IOAT_CHANSTS_DMA_TRANSFER_STATUS 0x7ULL #define IOAT_CHANSTS_DMA_TRANSFER_STATUS_ACTIVE 0x0 #define IOAT_CHANSTS_DMA_TRANSFER_STATUS_DONE 0x1 #define IOAT_CHANSTS_DMA_TRANSFER_STATUS_SUSPENDED 0x2 |