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Date: Thu, 26 Sep 2002 12:23:41 -0400
From: Jeff Garzik <jgarzik@pobox.com>
Organization: MandrakeSoft
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To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: linux-kernel@vger.kernel.org, Linus Torvalds <torvalds@transmeta.com>
Subject: Re: [RFC] {read,write}s{b,w,l} or iobarrier_*()
References: <20020926155941.3602@192.168.4.1>
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Benjamin Herrenschmidt wrote:
> So we have 2 solutions here (one of which I prefer, but I
> still want the debate open here):
> 
>  - Have all archs provide {read,write}s{b,w,l} functions.
> Those will hide all of the details of bytewapping & barriers
> from the drivers and can be used as-is for things like IDE
> MMIO iops.

I prefer this solution...


>  - Have all archs provide iobarrier_* functions. Here, drivers
> would still have to re-implement the transfer loops with
> raw_{read,write}{b,w,l} and do proper use of iobarrier_*.

I have a tulip patch from Peter de Shivjer (sp?) that adds 
iobarrier_rw() and I think it looks ugly as sin.  I would much prefer 
the first solution...

	Jeff



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