diff options
Diffstat (limited to 'include/drm/ttm/ttm_bo_api.h')
-rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 5ddad88ae6ed..2564e66e67d7 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -48,6 +48,8 @@ struct ttm_bo_global; struct ttm_bo_device; +struct dma_buf_map; + struct drm_mm_node; struct ttm_placement; @@ -496,6 +498,32 @@ int ttm_bo_kmap(struct ttm_buffer_object *bo, unsigned long start_page, void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map); /** + * ttm_bo_vmap + * + * @bo: The buffer object. + * @map: pointer to a struct dma_buf_map representing the map. + * + * Sets up a kernel virtual mapping, using ioremap or vmap to the + * data in the buffer object. The parameter @map returns the virtual + * address as struct dma_buf_map. Unmap the buffer with ttm_bo_vunmap(). + * + * Returns + * -ENOMEM: Out of memory. + * -EINVAL: Invalid range. + */ +int ttm_bo_vmap(struct ttm_buffer_object *bo, struct dma_buf_map *map); + +/** + * ttm_bo_vunmap + * + * @bo: The buffer object. + * @map: Object describing the map to unmap. + * + * Unmaps a kernel map set up by ttm_bo_vmap(). + */ +void ttm_bo_vunmap(struct ttm_buffer_object *bo, struct dma_buf_map *map); + +/** * ttm_bo_mmap_obj - mmap memory backed by a ttm buffer object. * * @vma: vma as input from the fbdev mmap method. |