r300 falling back on swrast

[Alex Deucher]

2009/5/1 Jeremy Huddleston <jeremyhu at freedesktop.org>:
>
> On May 1, 2009, at 05:50, Michel Dänzer wrote:
>
>> On Fri, 2009-05-01 at 03:42 -0700, Corbin Simpson wrote:
>>> Jeremy Huddleston wrote:
>>>> So I've got a PowerBook that I like to use to determine if issues I
>>>> come across are XQuartz specific or not... I've been using Fedora on
>>>> it for a while, but jumped ship to Ubuntu because of some
>>>> annoyances.
>>>>
>>>> With Ububntu, however, the r300 DRI driver is not being selected.
>>>> It's falling back on swrast for some reason.  I've bumped to trunk
>>>> for
>>>> libdrm, mesa, ati drivers.
>>>
>>> [snip]
>>>
>>>>     Kernel driver in use: radeonfb
>>>
>>> I'm not sure that DRM works when radeonfb's loaded, although I'm not
>>> exactly the most knowledgeable source on this.
>>
>> It works fine, all the anti-radeonfb propaganda ;) you've heard is
>> about
>> x86. On PowerMacs with Radeons radeonfb is pretty much required for
>> console (until we get KMS working, of course).
>
>
> Yeah, I was using radeonfb fine on Fedora fc10 (2.6.27.xx) and fc11/
> rawhide (2.6.29.xx).  This also happens if I use ofonly instead of
> radeonfb.
>
> Well then it certainly looks like a drm/agp problem:
> [   30.413499] radeonfb 0000:00:10.0: Invalid ROM contents
> [   30.593004] [drm] Initialized radeon 1.29.0 20080528 on minor 0
> [   31.163190] radeonfb 0000:00:10.0: putting AGP V2 device into 4x mode
> [   31.461184] [drm:radeon_do_init_cp] *ERROR* could not find ioremap
> agp regions!
>
> Since 2.6.27 was working on fc10, I decided to look at the radeon drm
> changes between 2.6.27 and 2.6.28.  They're mostly benign, more
> pciids, quirks, etc... nothing standing out that would affect the r350
> that I'm using.
>
> http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git;a=history;f=drivers/gpu/drm/radeon;hb=HEAD
> http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.28.y.git;a=history;f=drivers/gpu/drm/radeon;hb=HEAD
>
> I guess my best bet right now would be to try 2.6.29... or does anyone
> have another idea?  Should I try a particular git tree (like dave
> arlie's drm-2.6.git), or just linux/kernel/git/stable/linux-2.6.29.y.git
>

Does ioremap_wc() work on ppc?

Alex