diff options
Diffstat (limited to 'Documentation/DocBook')
| -rw-r--r-- | Documentation/DocBook/gpu.tmpl | 33 |
1 files changed, 4 insertions, 29 deletions
diff --git a/Documentation/DocBook/gpu.tmpl b/Documentation/DocBook/gpu.tmpl index 47b06dfa454d..944e65a87033 100644 --- a/Documentation/DocBook/gpu.tmpl +++ b/Documentation/DocBook/gpu.tmpl @@ -615,18 +615,6 @@ char *date;</synopsis> <function>drm_gem_object_init</function>. Storage for private GEM objects must be managed by drivers. </para> - <para> - Drivers that do not need to extend GEM objects with private information - can call the <function>drm_gem_object_alloc</function> function to - allocate and initialize a struct <structname>drm_gem_object</structname> - instance. The GEM core will call the optional driver - <methodname>gem_init_object</methodname> operation after initializing - the GEM object with <function>drm_gem_object_init</function>. - <synopsis>int (*gem_init_object) (struct drm_gem_object *obj);</synopsis> - </para> - <para> - No alloc-and-init function exists for private GEM objects. - </para> </sect3> <sect3> <title>GEM Objects Lifetime</title> @@ -649,15 +637,9 @@ char *date;</synopsis> </para> <para> <synopsis>void (*gem_free_object) (struct drm_gem_object *obj);</synopsis> - Drivers are responsible for freeing all GEM object resources, including - the resources created by the GEM core. If an mmap offset has been - created for the object (in which case - <structname>drm_gem_object</structname>::<structfield>map_list</structfield>::<structfield>map</structfield> - is not NULL) it must be freed by a call to - <function>drm_gem_free_mmap_offset</function>. The shmfs backing store - must be released by calling <function>drm_gem_object_release</function> - (that function can safely be called if no shmfs backing store has been - created). + Drivers are responsible for freeing all GEM object resources. This includes + the resources created by the GEM core, which need to be released with + <function>drm_gem_object_release</function>. </para> </sect3> <sect3> @@ -740,17 +722,10 @@ char *date;</synopsis> DRM identifies the GEM object to be mapped by a fake offset passed through the mmap offset argument. Prior to being mapped, a GEM object must thus be associated with a fake offset. To do so, drivers must call - <function>drm_gem_create_mmap_offset</function> on the object. The - function allocates a fake offset range from a pool and stores the - offset divided by PAGE_SIZE in - <literal>obj->map_list.hash.key</literal>. Care must be taken not to - call <function>drm_gem_create_mmap_offset</function> if a fake offset - has already been allocated for the object. This can be tested by - <literal>obj->map_list.map</literal> being non-NULL. + <function>drm_gem_create_mmap_offset</function> on the object. </para> <para> Once allocated, the fake offset value - (<literal>obj->map_list.hash.key << PAGE_SHIFT</literal>) must be passed to the application in a driver-specific way and can then be used as the mmap offset argument. </para> |