From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Higdon <jeremy@sgi.com>
Subject: Re: SCSI QLA not working on latest *-mm SN2
Date: Tue, 21 Sep 2004 13:39:40 -0700
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To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Matthew Wilcox <matthew@wil.cx>, Andrew Vasquez <andrew.vasquez@qlogic.com>, Jesse Barnes <jbarnes@engr.sgi.com>, Grant Grundler <grundler@parisc-linux.org>, pj@sgi.com, SCSI Mailing List <linux-scsi@vger.kernel.org>, mdr@cthulhu.engr.sgi.com, jeremy@cthulhu.engr.sgi.com, djh@cthulhu.engr.sgi.com, Andrew Morton <akpm@osdl.org>

On Tue, Sep 21, 2004 at 12:33:08PM -0400, James Bottomley wrote:
> On Tue, 2004-09-21 at 12:25, Matthew Wilcox wrote:
> >    Configuration writes are not posted. (I/O writes can be posted in the
> >    Host Bridge, but some restrictions apply.) Read transactions (Memory,
> >    I/O, or Configuration) are not posted.
> 
> Erk, depending on what "some restrictions apply" means, that blows a
> hole in the idea of using PIO writes to guarantee no posting.
> 
> James

I don't think that P(ort)IO writes are the answer, either.

jeremy