diff options
| author | Alexandre Courbot <acourbot@nvidia.com> | 2014-08-04 18:28:54 +0900 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2014-08-10 01:08:03 +1000 |
| commit | 3d50d4dcb0c4e0e01f45ae15df34ab6a04fb35bb (patch) | |
| tree | e4185162685c07ad2b592cf7c6bcb882cfb660e4 /include/drm | |
| parent | 7963e9db1b1f842fdc53309baa8714d38e9f5681 (diff) | |
drm/ttm: expose CPU address of DMA-allocated pages
Pages allocated using the DMA API have a coherent memory mapping. Make
this mapping visible to drivers so they can decide to use it instead of
creating their own redundant one.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/ttm/ttm_bo_driver.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 202f0a7171e..1d9f0f1ff52 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -133,6 +133,7 @@ struct ttm_tt { * struct ttm_dma_tt * * @ttm: Base ttm_tt struct. + * @cpu_address: The CPU address of the pages * @dma_address: The DMA (bus) addresses of the pages * @pages_list: used by some page allocation backend * @@ -142,6 +143,7 @@ struct ttm_tt { */ struct ttm_dma_tt { struct ttm_tt ttm; + void **cpu_address; dma_addr_t *dma_address; struct list_head pages_list; }; |