There was a website with support for the PCI G450 (for alpha I think): http://www.instmath.rwth-aachen.de:8000/linux/G450-PCI/ However it seems to be down at the moment. Someone on the ML knew the guy who was doing the work. perhaps they an find out the state of it.
It's been down for at least a few weeks. I tried looking it up when I first found out this project might be coming my way. I just looked through the archives, and I found a couple more threads that I missed before on this topic:
http://marc.theaimsgroup.com/?l=dri-devel&m=100631726630707&w=2 http://marc.theaimsgroup.com/?l=dri-devel&m=100707509032556&w=2
I don't think I'm so lucky as to have an iommu, but I don't know yet. Claus seems to have reached the same conclusion as I: the MGA DRM relies heavilly on AGP. Also, while his website is down, his anon cvs server is still up. :)
http://marc.theaimsgroup.com/?l=dri-devel&m=102373024625910&w=2
As I recall the G450-PCI cards were just AGP chips with an agp to pci
bridge. Perhaps you need to hack up an agpgart driver for the bridge? Also, for the pci g450, matrox only supported 3D on motherboards with
intel chipsets for whatever reason.
If possible, I'd like to leave that until later. Esp. since I don't have any docs for that. :(
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