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drm/ttm: rename ttm_fbdev_mmap

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Rename ttm_fbdev_mmap to ttm_bo_mmap_obj.  Move the vm_pgoff sanity
check to amdgpu_bo_fbdev_mmap (only ttm_fbdev_mmap user in tree).

The ttm_bo_mmap_obj function can now be used to map any buffer object.
This allows to implement &drm_gem_object_funcs.mmap in gem ttm helpers.

v3: patch added to series

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20191016115203.20095-8-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2019-10-16 13:51:59 +02:00
parent 24e25ea6d7
commit 12067e0e89
3 changed files with 10 additions and 13 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
View File

@ -1058,7 +1058,10 @@ void amdgpu_bo_fini(struct amdgpu_device *adev)
int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
struct vm_area_struct *vma)
{
return ttm_fbdev_mmap(vma, &bo->tbo);
if (vma->vm_pgoff != 0)
return -EACCES;
return ttm_bo_mmap_obj(vma, &bo->tbo);
}
/**

8
drivers/gpu/drm/ttm/ttm_bo_vm.c
View File

@ -479,14 +479,10 @@ out_unref:
}
EXPORT_SYMBOL(ttm_bo_mmap);
int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo)
int ttm_bo_mmap_obj(struct vm_area_struct *vma, struct ttm_buffer_object *bo)
{
if (vma->vm_pgoff != 0)
return -EACCES;
ttm_bo_get(bo);
ttm_bo_mmap_vma_setup(bo, vma);
return 0;
}
EXPORT_SYMBOL(ttm_fbdev_mmap);
EXPORT_SYMBOL(ttm_bo_mmap_obj);

10
include/drm/ttm/ttm_bo_api.h
View File

@ -710,16 +710,14 @@ int ttm_bo_kmap(struct ttm_buffer_object *bo, unsigned long start_page,
void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map);
/**
* ttm_fbdev_mmap - mmap fbdev memory backed by a ttm buffer object.
* ttm_bo_mmap_obj - mmap memory backed by a ttm buffer object.
*
* @vma: vma as input from the fbdev mmap method.
* @bo: The bo backing the address space. The address space will
* have the same size as the bo, and start at offset 0.
* @bo: The bo backing the address space.
*
* This function is intended to be called by the fbdev mmap method
* if the fbdev address space is to be backed by a bo.
* Maps a buffer object.
*/
int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo);
int ttm_bo_mmap_obj(struct vm_area_struct *vma, struct ttm_buffer_object *bo);
/**
* ttm_bo_mmap - mmap out of the ttm device address space.