From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Williamson Date: Tue, 04 May 2004 23:23:24 +0000 Subject: Re: [RFC] I/O MCA recovery Message-Id: <1083713004.5669.24.camel@localhost> List-Id: References: <200405040954.09524.jbarnes@engr.sgi.com> In-Reply-To: <200405040954.09524.jbarnes@engr.sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Tue, 2004-05-04 at 17:17, Jesse Barnes wrote: > > 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. > > Alex says that zx1 can soft fail on IO port accesses if configured to do so. > We don't have that option. > And the default configuration for zx1 is I/O port space in soft fail, MMIO space in hardfail. The current zx1 "smarts" in X can reconfigure the bridge w/ VGA to softfail MMIO for probing/int10 support. It's ugly, but it works. Alex -- Alex Williamson HP Linux & Open Source Lab