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From: FD Cami <francois.cami@free.fr>
To: linux-kernel@vger.kernel.org
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Al Boldi <a1426z@gawab.com>
Subject: [PATCH] Re: Forcing modes in libata (was: SATA buffered read VERY slow)
Date: Sun, 6 Jan 2008 16:21:00 +0100	[thread overview]
Message-ID: <20080106162100.05096d60@dimension.stilgar.hd.free.fr> (raw)
In-Reply-To: <20080106133609.51203eed@lxorguk.ukuu.org.uk>

[-- Attachment #1: Type: text/plain, Size: 612 bytes --]

On Sun, 6 Jan 2008 13:36:09 +0000
Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:

> On Sun, 6 Jan 2008 08:03:31 +0300
> > > For now you can boot with libata.dma=1 to select DMA on disks but
> > > not CD
> > 
> > Great, but why isn't this in the documentation?
> 
> Send patches

patch attached.

Description : Add libata.dma= to Documentation/kernel-parameters.txt

Found documentation in :
http://www.mail-archive.com/linux-ide%40vger.kernel.org/msg09849.html
http://www.redhat.com/archives/fedora-extras-commits/2007-October/msg04568.html

Signed-off-by: François Cami <francois.cami@free.fr>

[-- Attachment #2: libata-doc-patch.txt --]
[-- Type: text/plain, Size: 675 bytes --]

diff -rU2 linux-2.6.24-rc6/Documentation/kernel-parameters.txt linux-2.6.24-rc6-mine/Documentation/kernel-parameters.txt
--- linux-2.6.24-rc6/Documentation/kernel-parameters.txt	2008-01-06 15:58:54.000000000 +0100
+++ linux-2.6.24-rc6-mine/Documentation/kernel-parameters.txt	2008-01-06 16:11:20.000000000 +0100
@@ -883,4 +883,11 @@
 			C2 power state.
 
+	libata.dma=	[LIBATA] DMA control
+			libata.dma=0	  Disable all PATA DMA like old IDE
+			libata.dma=1	  Disk DMA only
+			libata.dma=2	  ATAPI DMA only
+			libata.dma=3	  CF DMA only 
+			libata.dma=0,1,3  Combinations also work.
+
 	libata.noacpi	[LIBATA] Disables use of ACPI in libata suspend/resume
 			when set.

  reply	other threads:[~2008-01-06 15:21 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-05 13:41 Al Boldi
2008-01-05 16:30 ` Alan Cox
2008-01-06  5:03   ` Al Boldi
2008-01-06 13:36     ` Alan Cox
2008-01-06 15:21       ` FD Cami [this message]
     [not found]         ` <200801061727.38206.bzolnier@gmail.com>
2008-01-06 18:08           ` [PATCH] " FD Cami
2008-01-06 19:09             ` Bartlomiej Zolnierkiewicz
2008-01-10 21:56             ` [PATCH] Re: Forcing modes in libata Jeff Garzik
2008-01-11 22:31               ` FD Cami

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