On Fri, 3 Sept 2021 at 13:31, Christian König
<ckoenig.leichtzumerken@xxxxxxxxx> wrote:
>
> Clean up to start over with new and more accurate documentation.
>
> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
For the series,
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
We could maybe also bring in ttm_pool.[ch]? It looks like it already
has near complete kernel-doc?
> ---
> 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 - This section is outdated.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)
> ====================================
>
> --
> 2.25.1
>
