From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: Ken Moffat <ken@kenmoffat.uklinux.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Problem with ide=nodma
Date: Sat, 9 Oct 2004 02:35:11 +0200 [thread overview]
Message-ID: <58cb370e04100817353254b8cd@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.58.0410090019150.26458@ppg_penguin.kenmoffat.uklinux.net>
On Sat, 9 Oct 2004 00:32:01 +0100 (BST), Ken Moffat
<ken@kenmoffat.uklinux.net> wrote:
> Hi,
>
> I'm trying a sii 0680 disk controller at the moment, as a possible
> workaround for some via southbridge problems (this is on a ppc which
> isn't yet supported by the official kernels, but it has been stable here
> since 2.6.7 and looks nearly ready for a first review). Unfortunately,
> DMA is a big no go at the moment so I have to pass ide=nodma in the
> bootargs.
>
> I've got the drives plugged into the sii card, and ide=reverse is doing
> its job. But although dmesg shows that dma has been turned off,
Is it possible that you are reading it wrong?
> /proc/ide/hda/settings and hdparm show that dma is in use. This is in
> 2.6.9-rc3.
>
> Doesn't ide=nodma work for off-board chipsets ?
siimage host driver doesn't respect "ide=nodma".
You can hack siimage.c and comment out "hwif->autodma = 1".
next prev parent reply other threads:[~2004-10-09 0:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-08 23:32 Problem with ide=nodma Ken Moffat
2004-10-09 0:35 ` Bartlomiej Zolnierkiewicz [this message]
2004-10-09 0:44 ` Ken Moffat
2004-10-09 0:50 ` Bartlomiej Zolnierkiewicz
2004-10-09 12:17 ` Ken Moffat
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