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author | Christian König | 2017-03-28 16:54:50 +0200 |
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committer | Alex Deucher | 2017-04-05 05:33:42 +0200 |
commit | ea642c3216cb2a60d1c0e760ae47ee85c9c16447 (patch) | |
tree | 8f80acf77ce3e8d80ccabf63e1e9502492c3a42a /include/drm/ttm/ttm_bo_api.h | |
parent | drm/ttm: cleanup and optimize ttm_bo_mem_compat v2 (diff) | |
download | kernel-qcow2-linux-ea642c3216cb2a60d1c0e760ae47ee85c9c16447.tar.gz kernel-qcow2-linux-ea642c3216cb2a60d1c0e760ae47ee85c9c16447.tar.xz kernel-qcow2-linux-ea642c3216cb2a60d1c0e760ae47ee85c9c16447.zip |
drm/ttm: add io_mem_pfn callback
This allows the driver to handle io_mem mappings on their own.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'include/drm/ttm/ttm_bo_api.h')
-rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 0b1ce05e2c2e..fa07be197945 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -711,6 +711,17 @@ extern int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo); /** + * ttm_bo_default_iomem_pfn - get a pfn for a page offset + * + * @bo: the BO we need to look up the pfn for + * @page_offset: offset inside the BO to look up. + * + * Calculate the PFN for iomem based mappings during page fault + */ +unsigned long ttm_bo_default_io_mem_pfn(struct ttm_buffer_object *bo, + unsigned long page_offset); + +/** * ttm_bo_mmap - mmap out of the ttm device address space. * * @filp: filp as input from the mmap method. |