EXA for radeon experimental patch

Michel Dänzer michel at daenzer.net
Thu Sep 1 14:16:00 PDT 2005

On Thu, 2005-09-01 at 11:35 +0200, Lars Knoll wrote:
> Even if the card doesn't have scatter/gather support, drm allows you to 
> allocate a piece of consistent physical ram, and mmap it in the server. 
> The handle you get is the physical address, so you should be able to use 
> that to implement PCI dma transfers.

Are you sure about that, in particular on a 64 bit system? The handle
may coincide with the physical address in a lot of cases, but I didn't
think that was guaranteed.

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

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