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| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:42:57 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:42:57 -0700 |
| commit | b094ad3be564e7cc59cca4ff0256550d3a55dd3b (patch) | |
| tree | d69f515b2ee6af2b0f12bb3028d7c7f5b3390794 /drivers/dma/ioat/dma_v2.c | |
| parent | e61dacaeb3918cd00cd642e8fb0828324ac59819 (diff) | |
| download | linux-b094ad3be564e7cc59cca4ff0256550d3a55dd3b.tar.gz linux-b094ad3be564e7cc59cca4ff0256550d3a55dd3b.tar.bz2 linux-b094ad3be564e7cc59cca4ff0256550d3a55dd3b.zip | |
ioat3: xor support
ioat3.2 adds xor offload support for up to 8 sources. It can also
perform an xor-zero-sum operation to validate whether all given sources
sum to zero, without writing to a destination. Xor descriptors differ
from memcpy in that one operation may require multiple descriptors
depending on the number of sources. When the number of sources exceeds
5 an extended descriptor is needed. These descriptors need to be
accounted for when updating the DMA_COUNT register.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ioat/dma_v2.c')
| -rw-r--r-- | drivers/dma/ioat/dma_v2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c index 80ce32de8d32..ee295d48ba2c 100644 --- a/drivers/dma/ioat/dma_v2.c +++ b/drivers/dma/ioat/dma_v2.c @@ -48,7 +48,7 @@ module_param(ioat_ring_max_alloc_order, int, 0644); MODULE_PARM_DESC(ioat_ring_max_alloc_order, "ioat2+: upper limit for dynamic ring resizing (default: n=16)"); -static void __ioat2_issue_pending(struct ioat2_dma_chan *ioat) +void __ioat2_issue_pending(struct ioat2_dma_chan *ioat) { void * __iomem reg_base = ioat->base.reg_base; |