From: Grant Grundler <iod00d@hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [RFC] I/O MCA recovery
Date: Tue, 04 May 2004 23:11:35 +0000 [thread overview]
Message-ID: <20040504231135.GA3395@cup.hp.com> (raw)
In-Reply-To: <200405040954.09524.jbarnes@engr.sgi.com>
On Tue, May 04, 2004 at 03:36:13PM -0700, Jesse Barnes wrote:
> Are you describing ia64 as a broken platform here? The problem I'm trying to
> solve isn't sn2 specific (though part of the X stuff I have to do will be
> driven by sn2 requirements), it's a generic way to deal with hard fails on
> PIO reads, which afaik, affects all ia64 platforms. Correct me if I'm wrong
> here...
hardfail vs softfail is a chipset, not arch issue.
Intel IA32/IA64 chipsets will softfail on MMIO reads and IO port
access that master abort (timeout).
HP chipsets (ZX1/SX1000) will hardfail - it's one of the differences
I point out in the "Porting drivers to ZX1" OLS2002 paper I wrote.
Sounds like SGI chipsets behave the same way.
ISTR only config space accesses are always required to softfail
on master aborts. I don't recall if IO Port space is required to as
well and it looks like this issue is outside the scope of PCI spec.
grant
next prev parent reply other threads:[~2004-05-04 23:11 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-04 16:54 [RFC] I/O MCA recovery Jesse Barnes
2004-05-04 17:14 ` Grant Grundler
2004-05-04 17:27 ` Jesse Barnes
2004-05-04 17:43 ` David Mosberger
2004-05-04 17:51 ` Grant Grundler
2004-05-04 18:04 ` Jesse Barnes
2004-05-04 18:07 ` Jesse Barnes
2004-05-04 18:20 ` David Mosberger
2004-05-04 22:36 ` Jesse Barnes
2004-05-04 22:50 ` Chris Wedgwood
2004-05-04 22:51 ` David Mosberger
2004-05-04 22:58 ` Jesse Barnes
2004-05-04 23:11 ` Grant Grundler [this message]
2004-05-04 23:13 ` David Mosberger
2004-05-04 23:15 ` David Mosberger
2004-05-04 23:17 ` Jesse Barnes
2004-05-04 23:18 ` Grant Grundler
2004-05-04 23:23 ` Alex Williamson
2004-05-04 23:31 ` Grant Grundler
2004-05-04 23:31 ` David Mosberger
2004-05-04 23:36 ` Grant Grundler
2004-05-12 19:03 ` Jesse Barnes
2004-05-12 21:11 ` David Mosberger
2004-05-12 21:24 ` Jesse Barnes
2004-05-12 21:35 ` David Mosberger
2004-05-12 21:44 ` Jesse Barnes
2004-05-12 21:52 ` Jesse Barnes
2004-05-12 21:54 ` David Mosberger
2004-05-12 21:59 ` Jesse Barnes
2004-05-13 9:02 ` Luck, Tony
2004-05-13 15:52 ` Jesse Barnes
2004-05-13 16:07 ` Luck, Tony
2004-05-13 16:43 ` Russ Anderson
2004-05-13 16:53 ` Jesse Barnes
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