Re: [RFC] I/O MCA recovery

Alex Williamson
2004-05-04T23:23:24Z

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