xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/ttm: add io_mem_pfn callback

Browse Source 
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>
This commit is contained in:
Christian König
2017-03-28 16:54:50 +02:00
committed by Alex Deucher
parent 018b7fc3a9
commit ea642c3216
13 changed files with 39 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
include/drm/ttm/ttm_bo_api.h
View File

@@ -710,6 +710,17 @@ extern void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map);
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.
*