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drm/ttm: add some general module kerneldoc

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For now just a brief description of what TTM is all about.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210908132933.3269-3-christian.koenig@amd.com
This commit is contained in:
Christian König 2021-09-07 09:07:29 +02:00
parent b998ba95d2
commit fcd0bbd619
2 changed files with 14 additions and 1 deletions
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3
Documentation/gpu/drm-mm.rst
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@ -28,7 +28,8 @@ UMA devices.
The Translation Table Manager (TTM)
===================================
TTM design background and information belongs here.
.. kernel-doc:: drivers/gpu/drm/ttm/ttm_module.c
:doc: TTM
The Graphics Execution Manager (GEM)
====================================

12
drivers/gpu/drm/ttm/ttm_module.c
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@ -39,6 +39,18 @@
#include "ttm_module.h"
/**
* DOC: TTM
*
* TTM is a memory manager for accelerator devices with dedicated memory.
*
* The basic idea is that resources are grouped together in buffer objects of
* certain size and TTM handles lifetime, movement and CPU mappings of those
* objects.
*
* TODO: Add more design background and information here.
*/
/**
* ttm_prot_from_caching - Modify the page protection according to the
* ttm cacing mode