EXA patches

[Alex Deucher]

2009/8/4 Michel Dänzer <michel at daenzer.net>:
> On Tue, 2009-08-04 at 11:54 +1000, Dave Airlie wrote:
>> On Tue, 2009-08-04 at 09:49 +0800, Joel Feiner wrote:
>> > 2009/8/4 Michel Dänzer <michel at daenzer.net>
>> >         <snip>
>> >
>> >         I wonder if maybe the slowdown I'm seeing is because the
>> >         radeon driver
>> >         is temporarily lacking UploadToScreen and DownloadFromScreen
>> >         hooks with
>> >         KMS, though I'm not sure what those would be used for with
>> >         text
>> >         rendering.
>> >
>> > Off-topic, but if I may enquire out of intellectual curiosity: why
>> > doesn't the KMS version of Radeon have UTS and DFS acceleration?
>>
>> The code is in the branch, but its really ugly, I was hoping to actual
>> do it cleaner which might involve a new kernel interface to ask for the
>> current placement of a buffer object so we can decide whether to just
>> memcpy or we need to blit for DFS. I'm not sure I saw a good reason for
>> UTS, doing Host data blits isn't really useful with BOs at least with
>> the current code.
>
> One potential benefit of UTS is pipelining. But I agree that DFS is
> probably more important.

FWIW... untested.
http://www.botchco.com/alex/xorg/radeon_kms_uts.diff

Alex