From: s-jaschke@t-online.de (Stefan Jaschke)
To: "Bobby D. Bryant" <bdbryant@mail.utexas.edu>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: Status of ALi MAGiK 1 support in 2.4.?
Date: Wed, 30 May 2001 23:48:10 +0200 [thread overview]
Message-ID: <01053023481000.00375@antares> (raw)
In-Reply-To: <E154iiK-0004Mb-00@the-village.bc.nu> <3B136639.D883F0C8@mail.utexas.edu>
In-Reply-To: <3B136639.D883F0C8@mail.utexas.edu>
On Tuesday 29 May 2001 11:04, Bobby D. Bryant wrote:
> Alan Cox wrote:
> > > May 22 21:45:07 pollux kernel: ALI15X3: simplex device: DMA disabled
> > > May 22 21:45:07 pollux kernel: ide0: ALI15X3 Bus-Master DMA disabled
> > > (BIOS)
> > > May 22 21:45:07 pollux kernel: ALI15X3: simplex device: DMA disabled
> > > May 22 21:45:07 pollux kernel: ide1: ALI15X3 Bus-Master DMA disabled
> >
> > The DMA was off because the BIOS left it off.
>
> I just checked, and the BIOS auto-detect page for that drive shows PIO Mode
> 4 and Ultra DMA Mode 5. The BIOS also shows a summary chart during boot,
> just before the LILO prompt, and that summary also reports UDMA 5 for that
> drive. It really looks like the kernel is not getting the correct device
> info from the BIOS.
Just a blind guess, but this reminds me of a similar problem I had with
a different Athlon board a while ago. The BIOS and the driver disagreed
on the bits through which DMA capability was signalled. The fix that worked
for me was to enable both IDE channels (and use up two interrupts) though
I needed only the first channel.
--
Stefan R. Jaschke <stefan@jaschke-net.de>
http://www.jaschke-net.de
next prev parent reply other threads:[~2001-05-30 21:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-28 23:18 Status of ALi MAGiK 1 support in 2.4.? Bobby D. Bryant
2001-05-29 12:35 ` Alan Cox
2001-05-29 9:04 ` Bobby D. Bryant
2001-05-30 21:48 ` Stefan Jaschke [this message]
2001-05-29 14:07 ` Mike Frisch
2001-05-29 9:11 ` Bobby D. Bryant
-- strict thread matches above, loose matches on Subject: below --
2001-05-28 15:57 Axel Thimm
2001-05-28 16:09 ` Mike Frisch
2001-05-28 16:17 ` Alan Cox
2001-05-28 16:28 ` Mike Frisch
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