U3 G5 AGP support patch (v4)

[Jerome Glisse]

> It seems there is bug somewhere in my agp patch. I was playing with
> r300 radeon and
> i get a hard lockup (quite used to that while playing with r300 thought :()
> 
> But after a bit of investigation it seems to be related to agp. Right now i am
> porting an old tools from dri that test agpgart & thus agp. I finally may really
> need to totaly split the u3 driver from the old uninorth.
> 
> I will give a deeper look to track down the issue. In the mean time if some
> one could test agp & radeon r200 on a g5. You will certainly lockup your g5
> but it should not burn, at least here i just got some smoke ;)
> 

Finally this was because i was doing some nasty stuff elsewhere :)
Thus AGP seems to work well, at least over here with some r300 
test program using agp :)

best,
Jerome Glisse