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From: Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andre Hedrick <andre@linux-ide.org>,
	linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: IO/MMIO 2.4 ATA/IDE driver recore near complete
Date: Sat, 18 May 2002 21:26:06 +0200	[thread overview]
Message-ID: <20020518212606.H635@nightmaster.csn.tu-chemnitz.de> (raw)
In-Reply-To: <Pine.LNX.4.10.10205180230290.774-100000@master.linux-ide.org> <20020517031515.20062@smtp.wanadoo.fr>

On Fri, May 17, 2002 at 04:15:15AM +0100, Benjamin Herrenschmidt wrote:
> >Please note BMDMA for MMIO is not native since there appears to be
> >pci-posting errors under x86.
> 
> Can you elaborate ? I had to deal with driver bugs related to
> PCI wr. posting in the past. I assume you know what you are doing,
> but just in case, you missed a SW bug, I may be able to help.

I'm also interested in these issues, since I plan to use BMDMA
into MMIO areas in my own driver. So maybe we should discuss this
on the list? ;-)

Also the machines/chipsets, where this happens would be nice to
know. How to detect and workaround such errors is another
challenging topic I would like to discuss.

Thanks and Regards

Ingo Oeser
-- 
Science is what we can tell a computer. Art is everything else. --- D.E.Knuth

  reply	other threads:[~2002-05-18 19:26 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-05-18  9:37 Andre Hedrick
2002-05-17  3:15 ` Benjamin Herrenschmidt
2002-05-18 19:26   ` Ingo Oeser [this message]
2002-05-19 10:33 ` Anssi Saari
2002-05-19 14:58   ` Jeff Garzik

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