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authorDan Williams <dan.j.williams@intel.com>2009-09-09 00:42:57 (GMT)
committerDan Williams <dan.j.williams@intel.com>2009-09-09 00:42:57 (GMT)
commitb094ad3be564e7cc59cca4ff0256550d3a55dd3b (patch)
treed69f515b2ee6af2b0f12bb3028d7c7f5b3390794 /fs/ntfs/namei.c
parente61dacaeb3918cd00cd642e8fb0828324ac59819 (diff)
downloadlinux-fsl-qoriq-b094ad3be564e7cc59cca4ff0256550d3a55dd3b.tar.xz
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 'fs/ntfs/namei.c')
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