From: Robert Hancock <hancockr@shaw.ca>
Date: Sat, 28 Oct 2006 02:08:41 +0000 (-0700)
Subject: [PATCH] sata_nv ADMA/NCQ support for nForce4
X-Git-Tag: v2.6.20-rc1~34^2~40^2~9^2~74
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fbbb262d9ea9bdbd79d7058271560e9990bc62d3;p=pandora-kernel.git

[PATCH] sata_nv ADMA/NCQ support for nForce4

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>
---

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