On Thu, Dec 22, 2011 at 4:56 PM, James Simmons <jsimmons@xxxxxxxxxxxxx> wrote: > > Hi! > > I updated the openchrome tree and while testing on the AGP system > discovered some interesting problems with the new TTM changes. The > problems center around the ttm_tt_[un]populate which I modeled after the > radeon and nouveau driver. > First problem I noticed was on a AGP system that my ttm_tt_populate > function would oops. Tracking it down I found the problem was the > ttm_agp_tt_create calls ttm_tt_init instead of ttm_dma_tt_init so once my > ttm_tt_populate function would attempt to touch the dma_address it would > oops. The second issue is the assumption of the cast for struct ttm_tt in > both the populate and unpopulate function. For the AGP case the proper > case would be to ttm_agp_backend. > At this point my assumption is the ttm_bo_move function has to be > rewritten to handle the AGP case to avoid calling ttm_tt_bind and in all > cases ttm_tt_bind needs to be avoided. Looking at the radeon and nouveau > drivers I don't see that testing happening. Am I just missing something? Happens on AGP radeons as well: https://bugs.freedesktop.org/show_bug.cgi?id=43719 Alex > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/dri-devel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
