From: Grant Grundler <grundler@parisc-linux.org>
To: Linas Vepstas <linas@austin.ibm.com>
Cc: Brian King <brking@us.ibm.com>,
matthew@wil.cx, linux-scsi@vger.kernel.org,
linuxppc64-dev@ozlabs.org
Subject: Re: Symbios PCI error recovery [Was: Re: [PATCH/RFC] ppc64: EEH + SCSI recovery (IPR only)]
Date: Thu, 31 Mar 2005 23:15:08 -0700 [thread overview]
Message-ID: <20050401061508.GC29734@colo.lackof.org> (raw)
In-Reply-To: <20050331201409.GH15596@austin.ibm.com>
On Thu, Mar 31, 2005 at 02:14:09PM -0600, Linas Vepstas wrote:
> > What config registers are you restoring?
>
> BAR's, grant, latency, interrupt, cacheline size.
"grant" is PCI_COMMAND?
If so, I think you have all of them.
You may want to leave BUS_MASTER disabled until you think
the driver is in a state where it needs to do DMA again.
E.g. before kicking off the scripts engine.
> > helps, or you could try power cycling the slot instead of using PCI reset.
>
> yes I could :( I'll try that next. Problem is, not all slots are
> power-cyclable, only the hotplug slots are. I've discoverd that
> for example, the ethernet chips are soldered to the motherboard, and
> can't be power-cycled (but fortunately, those don't give me trouble).
They can if the NIC driver doesn't deal with programming the phy
properly. We had a problem with tg3 because of that in the past.
The phy doesn't get reset as part of the PCI Bus RESET.
grant
next prev parent reply other threads:[~2005-04-01 6:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20050223002409.GA10909@austin.ibm.com>
[not found] ` <20050223174356.GH13081@kroah.com>
[not found] ` <1109207532.5384.32.camel@gaston>
[not found] ` <20050224013137.GF2088@austin.ibm.com>
[not found] ` <20050226063609.GC7036@colo.lackof.org>
2005-03-21 23:10 ` Symbios PCI error recovery [Was: Re: [PATCH/RFC] ppc64: EEH + SCSI recovery (IPR only)] Linas Vepstas
2005-03-22 17:38 ` Brian King
2005-03-31 20:14 ` Linas Vepstas
2005-04-01 6:15 ` Grant Grundler [this message]
2005-03-22 17:57 ` Grant Grundler
2005-03-31 20:06 ` Linas Vepstas
2005-04-01 6:08 ` Grant Grundler
2005-04-01 15:27 ` Brian King
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