This small series introduces TTM helper functions as well as Nouveau hooks that are needed to ensure buffer coherency on ARM. Most of this series is a forward-port of some patches Lucas Stach sent last year and that are also needed for Nouveau GK20A support:
http://lists.freedesktop.org/archives/nouveau/2013-August/014026.html
Another patch takes care of flushing the CPU write-buffer when writing BOs through a non-BAR path.
Alexandre Courbot (1): drm/nouveau: introduce CPU cache flushing macro
Lucas Stach (3): drm/ttm: recognize ARM arch in ioprot handler drm/ttm: introduce dma cache sync helpers drm/nouveau: hook up cache sync functions
drivers/gpu/drm/nouveau/core/os.h | 17 +++++++++++++++ drivers/gpu/drm/nouveau/nouveau_bo.c | 40 +++++++++++++++++++++++++++++++++-- drivers/gpu/drm/nouveau/nouveau_bo.h | 20 ++++++++++++++++++ drivers/gpu/drm/nouveau/nouveau_gem.c | 8 ++++++- drivers/gpu/drm/ttm/ttm_bo_util.c | 2 +- drivers/gpu/drm/ttm/ttm_tt.c | 25 ++++++++++++++++++++++ include/drm/ttm/ttm_bo_driver.h | 28 ++++++++++++++++++++++++ 7 files changed, 136 insertions(+), 4 deletions(-)