diff options
Diffstat (limited to 'include/drm/ttm/ttm_object.h')
-rw-r--r-- | include/drm/ttm/ttm_object.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/include/drm/ttm/ttm_object.h b/include/drm/ttm/ttm_object.h index 58b029894eb3..0097cc03034e 100644 --- a/include/drm/ttm/ttm_object.h +++ b/include/drm/ttm/ttm_object.h | |||
@@ -190,14 +190,26 @@ extern int ttm_base_object_init(struct ttm_object_file *tfile, | |||
190 | * @key: Hash key | 190 | * @key: Hash key |
191 | * | 191 | * |
192 | * Looks up a struct ttm_base_object with the key @key. | 192 | * Looks up a struct ttm_base_object with the key @key. |
193 | * Also verifies that the object is visible to the application, by | ||
194 | * comparing the @tfile argument and checking the object shareable flag. | ||
195 | */ | 193 | */ |
196 | 194 | ||
197 | extern struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file | 195 | extern struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file |
198 | *tfile, uint32_t key); | 196 | *tfile, uint32_t key); |
199 | 197 | ||
200 | /** | 198 | /** |
199 | * ttm_base_object_lookup_for_ref | ||
200 | * | ||
201 | * @tdev: Pointer to a struct ttm_object_device. | ||
202 | * @key: Hash key | ||
203 | * | ||
204 | * Looks up a struct ttm_base_object with the key @key. | ||
205 | * This function should only be used when the struct tfile associated with the | ||
206 | * caller doesn't yet have a reference to the base object. | ||
207 | */ | ||
208 | |||
209 | extern struct ttm_base_object * | ||
210 | ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint32_t key); | ||
211 | |||
212 | /** | ||
201 | * ttm_base_object_unref | 213 | * ttm_base_object_unref |
202 | * | 214 | * |
203 | * @p_base: Pointer to a pointer referencing a struct ttm_base_object. | 215 | * @p_base: Pointer to a pointer referencing a struct ttm_base_object. |
@@ -218,6 +230,8 @@ extern void ttm_base_object_unref(struct ttm_base_object **p_base); | |||
218 | * @existed: Upon completion, indicates that an identical reference object | 230 | * @existed: Upon completion, indicates that an identical reference object |
219 | * already existed, and the refcount was upped on that object instead. | 231 | * already existed, and the refcount was upped on that object instead. |
220 | * | 232 | * |
233 | * Checks that the base object is shareable and adds a ref object to it. | ||
234 | * | ||
221 | * Adding a ref object to a base object is basically like referencing the | 235 | * Adding a ref object to a base object is basically like referencing the |
222 | * base object, but a user-space application holds the reference. When the | 236 | * base object, but a user-space application holds the reference. When the |
223 | * file corresponding to @tfile is closed, all its reference objects are | 237 | * file corresponding to @tfile is closed, all its reference objects are |