linux-kernel - [PATCH] sata_nv ADMA/NCQ support for nForce4 (v6)

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Message-id: <453C1ED6.1030003@shaw.ca>
Date:	Sun, 22 Oct 2006 19:45:58 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	linux-ide@...r.kernel.org
Subject: [PATCH] sata_nv ADMA/NCQ support for nForce4 (v6)

Here's another minor update to this patch, now at version 6. Changes in 
this version are some code cleanups to the interrupt handler which 
should also provide a small performance gain.

---

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@...w.ca>

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

View attachment "sata_nv-adma-ncq-v6.patch" of type "text/plain" (31268 bytes)