Clean up to start over with new and more accurate documentation.
Signed-off-by: Christian König christian.koenig@amd.com Reviewed-by: Matthew Auld matthew.auld@intel.com --- Documentation/gpu/drm-mm.rst | 49 ------------------------------------ 1 file changed, 49 deletions(-)
diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst index 0198fa43d254..8ca981065e1a 100644 --- a/Documentation/gpu/drm-mm.rst +++ b/Documentation/gpu/drm-mm.rst @@ -30,55 +30,6 @@ The Translation Table Manager (TTM)
TTM design background and information belongs here.
-TTM initialization ------------------- - - **Warning** - This section is outdated. - -Drivers wishing to support TTM must pass a filled :c:type:`ttm_bo_driver -<ttm_bo_driver>` structure to ttm_bo_device_init, together with an -initialized global reference to the memory manager. The ttm_bo_driver -structure contains several fields with function pointers for -initializing the TTM, allocating and freeing memory, waiting for command -completion and fence synchronization, and memory migration. - -The :c:type:`struct drm_global_reference <drm_global_reference>` is made -up of several fields: - -.. code-block:: c - - struct drm_global_reference { - enum ttm_global_types global_type; - size_t size; - void *object; - int (*init) (struct drm_global_reference *); - void (*release) (struct drm_global_reference *); - }; - - -There should be one global reference structure for your memory manager -as a whole, and there will be others for each object created by the -memory manager at runtime. Your global TTM should have a type of -TTM_GLOBAL_TTM_MEM. The size field for the global object should be -sizeof(struct ttm_mem_global), and the init and release hooks should -point at your driver-specific init and release routines, which probably -eventually call ttm_mem_global_init and ttm_mem_global_release, -respectively. - -Once your global TTM accounting structure is set up and initialized by -calling ttm_global_item_ref() on it, you need to create a buffer -object TTM to provide a pool for buffer object allocation by clients and -the kernel itself. The type of this object should be -TTM_GLOBAL_TTM_BO, and its size should be sizeof(struct -ttm_bo_global). Again, driver-specific init and release functions may -be provided, likely eventually calling ttm_bo_global_ref_init() and -ttm_bo_global_ref_release(), respectively. Also, like the previous -object, ttm_global_item_ref() is used to create an initial reference -count for the TTM, which will call your initialization function. - -See the radeon_ttm.c file for an example of usage. - The Graphics Execution Manager (GEM) ====================================