diff options
Diffstat (limited to 'include/drm/drm_gem.h')
| -rw-r--r-- | include/drm/drm_gem.h | 181 |
1 files changed, 131 insertions, 50 deletions
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h index 3583b98a1718..c95727425284 100644 --- a/include/drm/drm_gem.h +++ b/include/drm/drm_gem.h @@ -38,6 +38,121 @@ #include <drm/drm_vma_manager.h> +struct drm_gem_object; + +/** + * struct drm_gem_object_funcs - GEM object functions + */ +struct drm_gem_object_funcs { + /** + * @free: + * + * Deconstructor for drm_gem_objects. + * + * This callback is mandatory. + */ + void (*free)(struct drm_gem_object *obj); + + /** + * @open: + * + * Called upon GEM handle creation. + * + * This callback is optional. + */ + int (*open)(struct drm_gem_object *obj, struct drm_file *file); + + /** + * @close: + * + * Called upon GEM handle release. + * + * This callback is optional. + */ + void (*close)(struct drm_gem_object *obj, struct drm_file *file); + + /** + * @print_info: + * + * If driver subclasses struct &drm_gem_object, it can implement this + * optional hook for printing additional driver specific info. + * + * drm_printf_indent() should be used in the callback passing it the + * indent argument. + * + * This callback is called from drm_gem_print_info(). + * + * This callback is optional. + */ + void (*print_info)(struct drm_printer *p, unsigned int indent, + const struct drm_gem_object *obj); + + /** + * @export: + * + * Export backing buffer as a &dma_buf. + * If this is not set drm_gem_prime_export() is used. + * + * This callback is optional. + */ + struct dma_buf *(*export)(struct drm_gem_object *obj, int flags); + + /** + * @pin: + * + * Pin backing buffer in memory. + * + * This callback is optional. + */ + int (*pin)(struct drm_gem_object *obj); + + /** + * @unpin: + * + * Unpin backing buffer. + * + * This callback is optional. + */ + void (*unpin)(struct drm_gem_object *obj); + + /** + * @get_sg_table: + * + * Returns a Scatter-Gather table representation of the buffer. + * Used when exporting a buffer. + * + * This callback is mandatory if buffer export is supported. + */ + struct sg_table *(*get_sg_table)(struct drm_gem_object *obj); + + /** + * @vmap: + * + * Returns a virtual address for the buffer. + * + * This callback is optional. + */ + void *(*vmap)(struct drm_gem_object *obj); + + /** + * @vunmap: + * + * Releases the the address previously returned by @vmap. + * + * This callback is optional. + */ + void (*vunmap)(struct drm_gem_object *obj, void *vaddr); + + /** + * @vm_ops: + * + * Virtual memory operations used with mmap. + * + * This is optional but necessary for mmap support. + */ + const struct vm_operations_struct *vm_ops; +}; + /** * struct drm_gem_object - GEM buffer object * @@ -146,6 +261,17 @@ struct drm_gem_object { * simply leave it as NULL. */ struct dma_buf_attachment *import_attach; + + /** + * @funcs: + * + * Optional GEM object functions. If this is set, it will be used instead of the + * corresponding &drm_driver GEM callbacks. + * + * New drivers should use this. + * + */ + const struct drm_gem_object_funcs *funcs; }; /** @@ -222,56 +348,6 @@ __drm_gem_object_put(struct drm_gem_object *obj) void drm_gem_object_put_unlocked(struct drm_gem_object *obj); void drm_gem_object_put(struct drm_gem_object *obj); -/** - * drm_gem_object_reference - acquire a GEM buffer object reference - * @obj: GEM buffer object - * - * This is a compatibility alias for drm_gem_object_get() and should not be - * used by new code. - */ -static inline void drm_gem_object_reference(struct drm_gem_object *obj) -{ - drm_gem_object_get(obj); -} - -/** - * __drm_gem_object_unreference - raw function to release a GEM buffer object - * reference - * @obj: GEM buffer object - * - * This is a compatibility alias for __drm_gem_object_put() and should not be - * used by new code. - */ -static inline void __drm_gem_object_unreference(struct drm_gem_object *obj) -{ - __drm_gem_object_put(obj); -} - -/** - * drm_gem_object_unreference_unlocked - release a GEM buffer object reference - * @obj: GEM buffer object - * - * This is a compatibility alias for drm_gem_object_put_unlocked() and should - * not be used by new code. - */ -static inline void -drm_gem_object_unreference_unlocked(struct drm_gem_object *obj) -{ - drm_gem_object_put_unlocked(obj); -} - -/** - * drm_gem_object_unreference - release a GEM buffer object reference - * @obj: GEM buffer object - * - * This is a compatibility alias for drm_gem_object_put() and should not be - * used by new code. - */ -static inline void drm_gem_object_unreference(struct drm_gem_object *obj) -{ - drm_gem_object_put(obj); -} - int drm_gem_handle_create(struct drm_file *file_priv, struct drm_gem_object *obj, u32 *handlep); @@ -293,4 +369,9 @@ int drm_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev, uint32_t handle); +int drm_gem_pin(struct drm_gem_object *obj); +void drm_gem_unpin(struct drm_gem_object *obj); +void *drm_gem_vmap(struct drm_gem_object *obj); +void drm_gem_vunmap(struct drm_gem_object *obj, void *vaddr); + #endif /* __DRM_GEM_H__ */ |