From: Mike Dresser <mdresser_l@windsormachine.com>
To: linux-kernel@vger.kernel.org
Subject: Re: DMA not supported with Intel ICH4 I/O controller?
Date: Mon, 28 Jul 2003 14:45:44 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.56.0307281443300.8747@router.windsormachine.com> (raw)
In-Reply-To: <PMEMILJKPKGMMELCJCIGCEIHCDAA.kfrazier@mdc-dayton.com>
On Mon, 28 Jul 2003, Kathy Frazier wrote:
> I just read on an Intel site
> (http://64.143.3.64/downloads/drivers/845/perform/linux/udma.htmthat) "ICH4
> requires kernel 2.5.12 or later to enable any DMA mode". Can you guys
> support or refute this? No wonder I'm having problems with my DMA device on
> the ASUS P4PE (using Intel 845PE and ICH4 chipsets)! Are there any patches,
> by chance, against a 2.4.20-8 that will give our system DMA support? Or
> maybe a patch for 2.4.21? kernel.org shows that the latest (albeit beta)
> kernel is 2.6.0-test2 . . . I hestiate to use that, because we would like
> something more stable to ship with our product.
I'm running 2.4.21 on this particular machine, and know it worked under
2.4.20.
Bus 0, device 31, function 1:
IDE interface: Intel Corp. 82801DB ICH4 IDE (rev 1).
IRQ 10.
I/O at 0xf000 [0xf00f].
Non-prefetchable 32 bit memory at 0x20000000 [0x200003ff].
mike:~# hdparm /dev/hda
/dev/hda:
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
unmaskirq = 0 (off)
using_dma = 1 (on)
mike:~# hdparm -Tt /dev/hda
/dev/hda:
Timing buffer-cache reads: 128 MB in 0.37 seconds =345.95 MB/sec
Timing buffered disk reads: 64 MB in 1.88 seconds = 34.04 MB/sec
ASUS P4B533 here, and other similar machines work as well.
Mike
next prev parent reply other threads:[~2003-07-28 18:30 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-28 19:44 DMA not supported with Intel ICH4 I/O controller? Kathy Frazier
2003-07-28 18:45 ` Mike Dresser [this message]
2003-07-28 20:40 ` Kathy Frazier
2003-07-28 19:32 ` Mike Dresser
2003-07-28 21:02 ` Kathy Frazier
2003-07-28 20:03 ` Mike Dresser
2003-07-28 20:19 ` Alan Cox
2003-07-28 22:02 ` Kathy Frazier
2003-07-28 21:21 ` Terje Kvernes
2003-07-29 14:45 ` Kathy Frazier
2003-07-29 11:01 ` Alan Cox
2003-07-29 14:07 ` Mike Dresser
2003-07-28 20:52 ` Roland Dreier
2003-07-29 13:01 ` Kathy Frazier
[not found] <1059443191.3861.48.camel@cube>
2003-07-29 13:14 ` Kathy Frazier
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