[PATCH 3/3] drm/radeon/kms: enable writeback on remaing asics

[Michel Dänzer]

On Fre, 2010-08-06 at 21:37 -0400, Alex Deucher wrote: 
> This enables writeback for the CP read pointer and
> scratch regs on the remaining radeon asics.

This doesn't work on my PowerBook. AFAIR the CP writeback isn't reliable
with at least older Apple AGP bridges and probably others as well, which
is why in the non-KMS case we're using the direct PCI bus address
instead of a GTT address.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer