On Thu, 2009-08-27 at 22:08 +0200, Gerhard Pircher wrote: 
> 
> I gave Radeon kernel mode setting a try on my PPC G4/7455 machine, but the
> Radeon DRM driver fails to initialize and then the kernel prints "Badness
> at kernel/mutex-debug.c:77". I tested it with an almost (yesterday) fresh
> checkout of the linus-2.6 (no log, but same output), drm-2.6/drm-fixes and
> drm-2.6/drm-next git tree.
> 
> Please take a look at the kernel config, log and lspci.txt files:
> http://boot.homelinux.org:8080/kernel/drm.config
> http://boot.homelinux.org:8080/kernel/drm-next.log
> http://boot.homelinux.org:8080/kernel/drm-fixes.log
> http://boot.homelinux.org:8080/kernel/lspci.txt
> 
> The machine is a bit special (non coherent DMA) and there is no AGPGART
> driver for the northbridge (so the Radeon card should operate in PCIGART
> mode!?).

My guess would be that radeon_gart_table_ram_alloc() fails. Maybe you
can add some debugging output there and in r100_pci_gart_enable() to
verify that.

> But I thought it would be good to have it working before the radeonfb
> driver is removed. :-)

I wouldn't worry about that yet, but in the long run we certainly want
to encourage everyone to move from radeonfb to KMS.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer

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