From: Ralf Baechle <ralf@oss.sgi.com>
To: "Tommy S. Christensen" <tommy.christensen@eicon.com>
Cc: Barry Wu <wqb123@yahoo.com>, linux-mips@oss.sgi.com
Subject: Re: mips ide disk dma problem
Date: Tue, 14 Aug 2001 07:17:19 +0200 [thread overview]
Message-ID: <20010814071718.A5552@bacchus.dhis.org> (raw)
In-Reply-To: <3B782CB0.AA24C7C8@eicon.com>; from tommy.christensen@eicon.com on Mon, Aug 13, 2001 at 09:38:24PM +0200
On Mon, Aug 13, 2001 at 09:38:24PM +0200, Tommy S. Christensen wrote:
> Barry Wu wrote:
> > I meet problems about mips ide disk. I find dma mode
> > is different from other platform. We have to use
> > dma_cache_wback_inv and vtonocache functions to work
> > under DMA mode, I read pcnet32 ethernet driver,
> > it works like that. I do not know if I have to support
> > ide disk dma, what I have to do?
>
> Some MIPS'ification is needed to handle the caches.
> You can try the patch below to drivers/block/ide-dma.c.
>
> I don't know about your IDE controller (our board have
> a CMD PCI-648), but it may need some special handling also.
You're referencing a function that doesn't exist in the whole kernel.
Aside it's a crude hack anyway. If you have problems with caches use
the API defined in Documentation/DMA-mapping.txt.
Ralf
next prev parent reply other threads:[~2001-08-14 5:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-13 13:07 mips ide disk dma problem Barry Wu
2001-08-13 19:38 ` Tommy S. Christensen
2001-08-14 5:17 ` Ralf Baechle [this message]
2001-08-14 8:12 ` Tommy S. Christensen
2001-08-14 9:03 ` Ralf Baechle
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