On Wed, Apr 2, 2014 at 10:14 AM, Alexandre Courbot gnurou@gmail.com wrote:
/* Need to figure out how to handle sw for gk20a */if (device->chipset == 0xea)goto skip_sw_init;The commit message makes it sound like SW isn't needed since gk20a "lacks any display hardware". In that case the comment here doesn't make much sense.
Correct. As far as I have looked (that is, not very far), SW methods are used for display-related functions, but there might be other use-cases too. Maybe someone who knows better can confirm?
http://cgit.freedesktop.org/~darktama/nouveau/tree/nvkm/engine/software/nvc0...
Take a look at nvc0_software_mthd_mp_control -- that's used in the mesa driver to... well, control those things :) They're related to PGRAPH, which should be available on the GK20A. [Not sure what they do though. One of them is about turning off error reporting.]
-ilia