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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 /include/linux/dmaengine.h | |
| parent | ioat3: enable dca for completion writes (diff) | |
| download | wireguard-linux-b094ad3be564e7cc59cca4ff0256550d3a55dd3b.tar.xz wireguard-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 'include/linux/dmaengine.h')
0 files changed, 0 insertions, 0 deletions