[Openchrome-devel] K8M890 chipset support

[Xavier Bachelot]

Bartosz Kosiorek wrote:
> Hello.
> 
> I have a big problem.
> When I try to enable some 2d graphic (game)
> or type "glxgears", the error displays:
> 
> fire_buffer: DRM_VIA_PCICMD returned -22
> 
> I think this error displays, because the DRM is not supported for
> VT3336 chipset.
> 
> VT3336 (K8M890) is a chipset for AMD Athlon/K8 CPU. Due to K8's unique
> architecture, the AGP resource and behavior are different from
> the traditional AGP which resides only in chipset.
> 
> Is it possible to get some documentation from VIA company, about AGP
> and DRM for VT3336 chipset?
> Is it hard to implement AGP (and DRM) VT3336 to openchrome driver ?
> 
> Best Regards
> Bartosz
> 
Beside the Chrome9 documentation VIA already released and that is linked
from the wiki[1], there is also a couple patches introducing a dedicated
Chrome9 drm driver VIA submitted for kernel inclusion[2] which are
probably a good information source. I believe the preferred path for
Chrome9 DRM is to add support for it to the new openchrome drm module
Thomas is working on at the moment[3].

Regards,
Xavier

[1]
http://www.openchrome.org/trac/wiki/Development#Hardwaredocumentation

[2]
http://article.gmane.org/gmane.comp.video.dri.devel/32970
http://article.gmane.org/gmane.comp.video.dri.devel/32973
http://article.gmane.org/gmane.comp.video.dri.devel/32976
http://article.gmane.org/gmane.comp.video.dri.devel/32978

[3]
http://cgit.freedesktop.org/mesa/drm/log/?h=modesetting-newttm