Commit 2aefcd57 authored by Committed by popcornmixBrowse files
drm/vc4: Allow using more than 256MB of CMA memory.
Until now, we've had to limit Raspberry Pi to 256MB of CMA memory to keep from triggering the hardware addressing bug between of the tile binner of the tile alloc memory (where the top 4 bits come from the tile state data array's address). To work around that and allow more memory to be reserved for graphics, allocate a single BO to store tile state data arrays and tile alloc/overflow memory while the GPU is active, and make sure that that one BO doesn't happen to cross a 256MB boundary. With that in place, we can allocate textures and shaders anywhere in system memory (still contiguous, of course). Signed-off-by: Eric Anholt <firstname.lastname@example.org>