DRM update for testing

[martinko]

Eric Anholt wrote:
> I've got a patch at:
> http://people.freebsd.org/~anholt/dri/drm-sys-20051123.diff
> for testing, which merges DRM CVS into FreeBSD.  I've done basic tests
> of a recent DRM CVS with WITNESS on AGP/PCI Matrox, AGP/PCI Rage 128,
> AGP Radeon r100/r200/r300, AGP Savage4 (new!), SiS, and 3dfx, and this
> version should be equivalent to what I tested.  I'll do another pass of
> testing before I commit, but I'd also like to get some wider testing so
> more panics can show up if they exist.  This particular diff has only
> been compile-tested with LINT on amd64 so far.
> 
> Known issues:
> - Radeon PCIGART mode hung for me.  I've heard this is caused by a
> change in X.Org upstream which itself worked around a different hang, so
> those of you not using xorg-server-snap wouldn't hit it hopefully.
> - Savage3d untested iirc
> - Savage4 PCI doesn't work (needs some love in the memory mapping
> department, I think).
> 
> However, savage support has experimental and will only be on by default
> with the next release of X.Org, so I feel OK with integrating it into
> -current.
> 
> So, for testing: If you get instant reboots while starting/using X, that
> almost always means a kernel panic.  This is new behavior in the last
> year or so afaik (where a number of us have issues dumping while in X).
> However, I've hooked up serial consoles and got backtraces fine, which
> hopefully you can do if you hit issues, as well. 
> 
> Also, note that this brings in a new enough r300 driver for running Mesa
> CVS's r300 driver, which hasn't been the case for a while.  It doesn't
> bring in the via driver, which jakeb ported but which got overcome by
> new linux-specific code (volunteers to work on this in DRM CVS would be
> excellent!) in CVS.  Also, the i915 (i830 through i915 integrated
> graphics) driver should be pretty quick for someone with a bit of newbus
> knowledge to finish off, or it could be a chance someone who cared to
> learn more about the FreeBSD kernel :)
> 

eric,

i've got only 64MB video memory, while :

$ dmesg | g drm
drm0: <ATI Radeon RV300 Mobility 9600 M10> port 0xc800-0xc8ff mem 
0xd0000000-0xd7ffffff,0xff8f0000-0xff8fffff irq 5 at device 0.0 on pci1
info: [drm] AGP at 0xe0000000 256MB
info: [drm] Initialized radeon 1.19.0 20050911

note, that i'm running 6-stable and cvsuped recently just to discover 
that radeon driver is finally attaching.

many thanks for your work!

martin