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authorRamalingam C <ramalingam.c@intel.com>2022-04-01 18:07:49 +0530
committerRamalingam C <ramalingam.c@intel.com>2022-04-02 08:22:48 +0530
commite36764ecf87cb86051f26cc8e5a9a665784a9f39 (patch)
treef5812afeb677afe296b21b3315e2b0b664170107 /include/drm/ttm
parentab0609a5fb301b035702171c04b3ee532682b726 (diff)
downloadlinux-e36764ecf87cb86051f26cc8e5a9a665784a9f39.tar.bz2
drm/ttm: Add a parameter to add extra pages into ttm_tt
Add a parameter called "extra_pages" for ttm_tt_init, to indicate that driver needs extra pages in ttm_tt. v2: Used imperative wording [Thomas and Christian] Signed-off-by: Ramalingam C <ramalingam.c@intel.com> cc: Christian Koenig <christian.koenig@amd.com> cc: Hellstrom Thomas <thomas.hellstrom@intel.com> Reviewed-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian Konig <christian.koenig@amd.com> Reviewed-by: Nirmoy Das <nirmoy.das@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220401123751.27771-8-ramalingam.c@intel.com
Diffstat (limited to 'include/drm/ttm')
-rw-r--r--include/drm/ttm/ttm_tt.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h
index f20832139815..17a0310e8aaa 100644
--- a/include/drm/ttm/ttm_tt.h
+++ b/include/drm/ttm/ttm_tt.h
@@ -140,6 +140,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc);
* @bo: The buffer object we create the ttm for.
* @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags.
* @caching: the desired caching state of the pages
+ * @extra_pages: Extra pages needed for the driver.
*
* Create a struct ttm_tt to back data with system memory pages.
* No pages are actually allocated.
@@ -147,7 +148,8 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc);
* NULL: Out of memory.
*/
int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo,
- uint32_t page_flags, enum ttm_caching caching);
+ uint32_t page_flags, enum ttm_caching caching,
+ unsigned long extra_pages);
int ttm_sg_tt_init(struct ttm_tt *ttm_dma, struct ttm_buffer_object *bo,
uint32_t page_flags, enum ttm_caching caching);