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| author | Shannon Nelson <shannon.nelson@intel.com> | 2007-11-14 16:59:51 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-14 18:45:41 -0800 |
| commit | 7bb67c14fd3778504fb77da30ce11582336dfced (patch) | |
| tree | 24b65f267a98716824c7955be02af8879cfda688 /Documentation/spi/spidev | |
| parent | cc9f2f8f68efcc73d8793a4df2c4c50196e90080 (diff) | |
| download | op-kernel-dev-7bb67c14fd3778504fb77da30ce11582336dfced.zip op-kernel-dev-7bb67c14fd3778504fb77da30ce11582336dfced.tar.gz | |
I/OAT: Add support for version 2 of ioatdma device
Add support for version 2 of the ioatdma device. This device handles
the descriptor chain and DCA services slightly differently:
- Instead of moving the dma descriptors between a busy and an idle chain,
this new version uses a single circular chain so that we don't have
rewrite the next_descriptor pointers as we add new requests, and the
device doesn't need to re-read the last descriptor.
- The new device has the DCA tags defined internally instead of needing
them defined statically.
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Cc: "Williams, Dan J" <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/spi/spidev')
0 files changed, 0 insertions, 0 deletions
