From: "Michel Dänzer" <michel@daenzer.net>
To: "Cédric Cano" <ccano@interfaceconcept.com>
Cc: icthj <tjourdan@interfaceconcept.com>, dri-devel@lists.freedesktop.org
Subject: Re: R600 definition error for interrupt handler swap
Date: Thu, 02 Feb 2012 10:09:14 +0100 [thread overview]
Message-ID: <1328173754.6727.211.camel@thor.local> (raw)
In-Reply-To: <4F2A4C8A.3070504@interfaceconcept.com>
On Don, 2012-02-02 at 09:42 +0100, Cédric Cano wrote:
>
> We try to use the Linux 3.0.0 on our PowerPC board and M96 GPU (RV730):
> it doesn't work as is. We need to revert this definition like it was
> before 2.6.39.4
> (http://lists.freedesktop.org/archives/dri-devel/2011-July/012811.html).
I suspect you may be tripping over the double byte-swapping fixed by
commit df07d6999e4e502ff474eeafe11ea0055f4cd68d ('drm/radeon: Writeback
endian fixes'). By using the wrong definition of IH_MC_SWAP, you'd
accidentally disable the GPU byte swapping, making the CPU byte swapping
work correctly.
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Debian, X and DRI developer
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prev parent reply other threads:[~2012-02-02 9:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-01 9:33 R600 definition error for interrupt handler swap Cédric Cano
2012-02-01 19:46 ` Alex Deucher
2012-02-02 8:42 ` Cédric Cano
2012-02-02 9:09 ` Michel Dänzer [this message]
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