search for: gpfifos

...a), such accesses on ARM might result in the other accessor to end up in an incoherent state. To address this, patches 1-3 add the ability to understand whether we are on a non-coherent architecture, implement a way to explicitly allocate coherent buffers buffers using the DMA API, and uses it for GPFIFOS and fences. Patch 4 also uses the DMA API to synchronize user-space allocated buffers when they are passed from the CPU to the GPU and vice-versa. Thanks to the feedback received on the previous revisions I believe this code looks rather good now. I also have extensively tested it and could not se...

...dre Courbot (6): drm/ttm: expose CPU address of DMA-allocated pages drm/nouveau: map pages using DMA API on platform devices drm/nouveau: introduce nv_device_is_cpu_coherent() drm/nouveau: synchronize BOs when required drm/nouveau: implement explicitly coherent BOs drm/nouveau: allocate GPFIFOs and fences coherently drivers/gpu/drm/nouveau/core/engine/device/base.c | 14 ++- drivers/gpu/drm/nouveau/core/include/core/device.h | 3 + drivers/gpu/drm/nouveau/nouveau_bo.c | 132 +++++++++++++++++++-- drivers/gpu/drm/nouveau/nouveau_bo.h | 3 + drivers/gpu/d...