On Mon, 2004-03-08 at 06:58, Jon Smirl wrote:
> I'm trying to merge some of the functions from the radeon DRM and FB device
> drivers into a single driver. I've been working on the code for a week trying to
> get AGP working but I can't seem to figure out what is wrong. In
> drm/radeon_cp.c,  radeon_cp_init_ring_buffer() there is a test to see if the GPU
> will write the registers out to AGP space:

BTW, we should move this to PCI space whenever possible, as many AGP
bridges seem to be buggy in this area.


> Does the CP need to be running for this to work?

I don't think so.

> Does PCI bus mastering need to be enabled?

Probably; otherwise there's no way for the GPU to initiate a transfer,
is there?


-- 
Earthling Michel DÃnzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer



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