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drm/ttm: remove ttm_bo_default_io_mem_pfn

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No one will use this function except ttm_bo_io_mem_pfn() now, so move
the calculation of ttm_bo_default_io_mem_pfn() into ttm_bo_io_mem_pfn()
and do some cleanup.

Signed-off-by: Tan Xiaojun <tanxiaojun@huawei.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tan Xiaojun 2017-12-25 11:43:34 +08:00 committed by Alex Deucher
parent e42b93758b
commit e83bf4adf5
2 changed files with 2 additions and 20 deletions
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11
drivers/gpu/drm/ttm/ttm_bo_vm.c
View File

@ -100,7 +100,8 @@ static unsigned long ttm_bo_io_mem_pfn(struct ttm_buffer_object *bo,
if (bdev->driver->io_mem_pfn)
return bdev->driver->io_mem_pfn(bo, page_offset);
return ttm_bo_default_io_mem_pfn(bo, page_offset);
return ((bo->mem.bus.base + bo->mem.bus.offset) >> PAGE_SHIFT)
+ page_offset;
}
static int ttm_bo_vm_fault(struct vm_fault *vmf)
@ -420,14 +421,6 @@ static struct ttm_buffer_object *ttm_bo_vm_lookup(struct ttm_bo_device *bdev,
return bo;
}
unsigned long ttm_bo_default_io_mem_pfn(struct ttm_buffer_object *bo,
unsigned long page_offset)
{
return ((bo->mem.bus.base + bo->mem.bus.offset) >> PAGE_SHIFT)
+ page_offset;
}
EXPORT_SYMBOL(ttm_bo_default_io_mem_pfn);
int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
struct ttm_bo_device *bdev)
{

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

@ -704,17 +704,6 @@ void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map);
*/
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.
*