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From: Andreas Schwab <schwab@linux-m68k.org>
To: Michel =?utf-8?Q?D=C3=A4nzer?= <michel@daenzer.net>
Subject: Re: PowerPC radeon KMS - is it possible?
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Date: Wed, 18 Apr 2012 16:55:53 +0200
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Michel Dänzer <michel@daenzer.net> writes:

> On Mit, 2012-04-18 at 16:28 +0200, Andreas Schwab wrote: 
>> Michel Dänzer <michel@daenzer.net> writes:
>> 
>> > Have you tried smaller aperture sizes (uninorth_agp.aperture) and/or
>> > radeon.test=1? (See commit 52f072cb084bbb460d3a4ae09f0b6efc3e7e8a8c)
>> 
>> Neither changes anything.
>
> How small aperture sizes have you tried?

32M. With the old UMS driver 3D once worked fine ...

> The purpose of radeon.test=1 isn't to change anything but to catch
> problems transferring data between system memory bound via AGP GART and
> video RAM. Does it pass for the whole AGP aperture?

AFAICT yes.  For the default 256M it printed "[drm] Tested GTT->VRAM and
VRAM->GTT copy for GTT offset" for every other offset from 0x201000
to 0xfe01000.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."