From: Patrick Finnegan <pat@computer-refuge•org>
To: Benjamin Herrenschmidt <benh@kernel•crashing.org>
Cc: paulus@samba•org,
"linuxppc-dev@lists•ozlabs.org" <linuxppc-dev@lists•ozlabs.org>
Subject: Re: Problem with Infiniband adapter on IBM p550
Date: Tue, 2 Nov 2010 23:15:04 -0400 [thread overview]
Message-ID: <201011022315.04291.pat@computer-refuge.org> (raw)
In-Reply-To: <1286516749.2463.408.camel@pasglop>
On Friday, October 08, 2010, Benjamin Herrenschmidt wrote:
> > Ok, so from what I can tell, the driver is unhappy because either
> > BAR 0 hasn't been assigned a memory resource or the size doesn't
> > match what the driver expects.
>
> Ooops, accidentally sent too quickly...
>
> >From your OF log I see:
> reg 00c10000 00000000 00000000 00000000 00000000
> 03c10010 00000000 00000000 00000000 00100000
> 43c10018 00000000 00000000 00000000 00800000
> 43c10020 00000000 00000000 00000000 08000000
> assigned-addresses 83c10020 00000000 e8000000 00000000 08000000
>
> Now, I think this is the problem.
>
> The "assigned-addresses" property seems to indicate that the firmware
> only assigned BAR 4 and didn't assign anything to the other ones.
>
> I don't know why, but it definitely looks like a firmware bug to me.
> On those machines, PCI resource assignment is under hypervisor
> control and so Linux cannot re-assign missing resources itself.
>
> I'll see if I can find a FW person to shed some light on this.
>
> Can you provide me (privately maybe) with the FW version on the
> machine ?
Ben,
Have you found out anything more on this (firmware) bug?
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
next prev parent reply other threads:[~2010-11-03 3:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-08 3:24 Problem with Infiniband adapter on IBM p550 Patrick Finnegan
2010-10-08 5:41 ` Benjamin Herrenschmidt
2010-10-08 5:45 ` Benjamin Herrenschmidt
2010-11-03 3:15 ` Patrick Finnegan [this message]
2010-11-03 13:34 ` Anton Blanchard
2010-11-03 14:43 ` Patrick Finnegan
2010-11-03 13:46 ` Benjamin Herrenschmidt
-- strict thread matches above, loose matches on Subject: below --
2010-10-08 2:57 Patrick Finnegan
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