The provided helpers can be used for the respective callback functions in |struct drm_driver|.
v4: * cleanups from checkpatch.pl v2: * documentation fixes
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de --- drivers/gpu/drm/drm_gem_vram_helper.c | 49 +++++++++++++++++++++++++++ include/drm/drm_gem_vram_helper.h | 10 ++++++ 2 files changed, 59 insertions(+)
diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index e929a18c03f3..41f971908b78 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -460,3 +460,52 @@ int drm_gem_vram_bo_driver_verify_access(struct ttm_buffer_object *bo, filp->private_data); } EXPORT_SYMBOL(drm_gem_vram_bo_driver_verify_access); + +/* + * Helpers for struct drm_driver + */ + +/** + * drm_gem_vram_driver_gem_free_object_unlocked() - \ + Implements &struct drm_driver.gem_free_object_unlocked + * @gem: GEM object. Refers to &struct drm_gem_vram_object.gem + */ +void drm_gem_vram_driver_gem_free_object_unlocked(struct drm_gem_object *gem) +{ + struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(gem); + + drm_gem_vram_put(gbo); +} +EXPORT_SYMBOL(drm_gem_vram_driver_gem_free_object_unlocked); + +/** + * drm_gem_vram_driver_dumb_mmap_offset() - \ + Implements &struct drm_driver.dumb_mmap_offset + * @file: DRM file pointer. + * @dev: DRM device. + * @handle: GEM handle + * @offset: Returns the mapping's memory offset on success + * + * Returns: + * 0 on success, or + * a negative errno code otherwise. + */ +int drm_gem_vram_driver_dumb_mmap_offset(struct drm_file *file, + struct drm_device *dev, + uint32_t handle, uint64_t *offset) +{ + struct drm_gem_object *gem; + struct drm_gem_vram_object *gbo; + + gem = drm_gem_object_lookup(file, handle); + if (!gem) + return -ENOENT; + + gbo = drm_gem_vram_of_gem(gem); + *offset = drm_gem_vram_mmap_offset(gbo); + + drm_gem_object_put_unlocked(gem); + + return 0; +} +EXPORT_SYMBOL(drm_gem_vram_driver_dumb_mmap_offset); diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index f92e0f531a68..d6a75d860f4e 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -99,4 +99,14 @@ void drm_gem_vram_bo_driver_evict_flags(struct ttm_buffer_object *bo, int drm_gem_vram_bo_driver_verify_access(struct ttm_buffer_object *bo, struct file *filp);
+/* + * Helpers for struct drm_driver + */ + +void drm_gem_vram_driver_gem_free_object_unlocked(struct drm_gem_object *gem); + +int drm_gem_vram_driver_dumb_mmap_offset(struct drm_file *file, + struct drm_device *dev, + uint32_t handle, uint64_t *offset); + #endif