This patch prepares VRAM helpers for lazy unmapping of buffer objects.
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de --- drivers/gpu/drm/drm_vram_mm_helper.c | 12 ++++++++++++ include/drm/drm_vram_mm_helper.h | 4 ++++ 2 files changed, 16 insertions(+)
diff --git a/drivers/gpu/drm/drm_vram_mm_helper.c b/drivers/gpu/drm/drm_vram_mm_helper.c index c911781d6728..31984690d5f3 100644 --- a/drivers/gpu/drm/drm_vram_mm_helper.c +++ b/drivers/gpu/drm/drm_vram_mm_helper.c @@ -98,6 +98,17 @@ static int bo_driver_verify_access(struct ttm_buffer_object *bo, return vmm->funcs->verify_access(bo, filp); }
+static void bo_driver_move_notify(struct ttm_buffer_object *bo, + bool evict, + struct ttm_mem_reg *new_mem) +{ + struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bo->bdev); + + if (!vmm->funcs || !vmm->funcs->move_notify) + return; + vmm->funcs->move_notify(bo, evict, new_mem); +} + static int bo_driver_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) { @@ -140,6 +151,7 @@ static struct ttm_bo_driver bo_driver = { .eviction_valuable = ttm_bo_eviction_valuable, .evict_flags = bo_driver_evict_flags, .verify_access = bo_driver_verify_access, + .move_notify = bo_driver_move_notify, .io_mem_reserve = bo_driver_io_mem_reserve, .io_mem_free = bo_driver_io_mem_free, }; diff --git a/include/drm/drm_vram_mm_helper.h b/include/drm/drm_vram_mm_helper.h index 2aacfb1ccfae..7fb8700f45fe 100644 --- a/include/drm/drm_vram_mm_helper.h +++ b/include/drm/drm_vram_mm_helper.h @@ -15,6 +15,8 @@ struct drm_device; &ttm_bo_driver.evict_flags * @verify_access: Provides an implementation for \ struct &ttm_bo_driver.verify_access + * @move_notify: Provides an implementation for + * struct &ttm_bo_driver.move_notify * * These callback function integrate VRAM MM with TTM buffer objects. New * functions can be added if necessary. @@ -23,6 +25,8 @@ struct drm_vram_mm_funcs { void (*evict_flags)(struct ttm_buffer_object *bo, struct ttm_placement *placement); int (*verify_access)(struct ttm_buffer_object *bo, struct file *filp); + void (*move_notify)(struct ttm_buffer_object *bo, bool evict, + struct ttm_mem_reg *new_mem); };
/**