[PATCH] sata_nv ADMA/NCQ support for nForce4

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This patch adds support for ADMA mode on NVIDIA nForce4 (CK804/MCP04) SATA
controllers to the sata_nv driver.  Benefits of ADMA mode include:

- NCQ support

- Reduced CPU overhead (controller DMAs command information from memory
  instead of them being pushed in by the CPU)

- Full 64-bit DMA support

ADMA mode is enabled by default in this version.  To disable it, set the
module parameter adma_enabled=0.

Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

...

This commit is contained in:

Robert Hancock 2006-10-27 19:08:41 -07:00 • committed by Jeff Garzik

parent 6e9d8629b5

commit fbbb262d9e

2 changed files with 924 additions and 12 deletions

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drivers/ata/libata-sff.c

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934

drivers/ata/sata_nv.c

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