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From: Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
To: Patrick Finnegan <pat-bdq14YP6qtQCo4FBHZViTkB+6BGkLq7r@public.gmane.org>
Cc: sparclinux-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: Sun V880 + Infiniband?
Date: Wed, 02 Dec 2009 09:55:19 -0800	[thread overview]
Message-ID: <adaocmhuupk.fsf@roland-alpha.cisco.com> (raw)
In-Reply-To: <200912021045.02970.pat-bdq14YP6qtQCo4FBHZViTkB+6BGkLq7r@public.gmane.org> (Patrick Finnegan's message of "Wed, 2 Dec 2009 10:45:02 -0500")


 > [   99.664193] ib_mthca 0003:01:00.0: Missing DCS, aborting.
 > 
 > I'm using a kernel compiled off of Linus's git tree as of a few days ago 
 > (to fix other SPARC issues).  From what I've seen from google searches, 
 > this means that the first BAR isn't mapped or visible to the driver, so 
 > maybe this is a SPARC related thing?

I think the problem is related to:

 >         Memory at fffff80500000000 (64-bit, non-prefetchable) [size=1]
 >         Memory at fffff80500000000 (64-bit, prefetchable) [size=1]
 >         Memory at fffff80500000000 (64-bit, prefetchable) [size=1]

So it says you have 3 BARs at the same address, all with size 1 (?!)
which means the PCI setup or probing is messed up.  The mthca driver
checks that the first BAR has size 1 megabyte as it should, and it's
bailing out because the kernel is telling it that it's the wrong size.

 - R.


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  parent reply	other threads:[~2009-12-02 17:55 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-02 15:45 Sun V880 + Infiniband? Patrick Finnegan
     [not found] ` <200912021045.02970.pat-bdq14YP6qtQCo4FBHZViTkB+6BGkLq7r@public.gmane.org>
2009-12-02 17:55   ` Roland Dreier [this message]
2009-12-02 22:42     ` David Miller
     [not found]       ` <20091202.144255.137848873.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2009-12-03  6:44         ` Patrick Finnegan
     [not found]           ` <4B177A9F.8010909@Sun.COM>
     [not found]             ` <4B177A9F.8010909-UdXhSnd/wVw@public.gmane.org>
2009-12-03  9:17               ` David Miller
2009-12-09  9:39           ` David Miller
     [not found]             ` <20091209.013955.262196704.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2009-12-09 19:29               ` Patrick Finnegan
     [not found]                 ` <200912091429.56117.pat-bdq14YP6qtQCo4FBHZViTkB+6BGkLq7r@public.gmane.org>
2009-12-10  1:20                   ` David Miller

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