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Subject: Re: [parisc-linux] Re: NCR53c720
From: James Bottomley <James.Bottomley@steeleye.com>
To: Grant Grundler <grundler@parisc-linux.org>
Cc: Matthew Wilcox <willy@debian.org>,
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Date: 29 Sep 2003 16:00:10 -0500
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On Mon, 2003-09-29 at 15:55, Grant Grundler wrote:
> On Mon, Sep 29, 2003 at 05:27:49PM +0100, Matthew Wilcox wrote:
> > > Um, which one is the current right dma device API?
> > 
> > The one in Documentation/DMA-API.txt.
> 
> Matthew, which version of the source tree?
> 2.4.22 and 2.6.x versions of this file are not identical.
> 
> grundler@gsyprf3:/usr/src$ diff linux-2.?/Documentation/DMA-mapping.txt | wc -l
>    117
> grundler@gsyprf3:/usr/src$ wc -l linux-2.?/Documentation/DMA-mapping.txt
>     798 linux-2.4/Documentation/DMA-mapping.txt
>     828 linux-2.5/Documentation/DMA-mapping.txt
>    1626 total

DMA-mapping.txt is only the pci_ DMA API.  The ncr53c8xx doesn't use
that any more.  It only uses the generic DMA API, which is documented in
DMA-API.txt like willy said, and is only in 2.6 (not 2.4).

James