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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-02-02 05:55:46 (GMT) |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2009-03-13 04:23:56 (GMT) |
commit | f77d390c9779c496aa5b99ec832996fb76bb1d13 (patch) | |
tree | 3e3cccc4ac9416457a944d13b31ef942432717f2 /drivers/gpu/drm/drm_vm.c | |
parent | d883f7f1b75c8dcafa891f7b9e69c5a2f0ff6d66 (diff) | |
download | linux-f77d390c9779c496aa5b99ec832996fb76bb1d13.tar.xz |
drm: Split drm_map and drm_local_map
Once upon a time, the DRM made the distinction between the drm_map
data structure exchanged with user space and the drm_local_map used
in the kernel.
For some reasons, while the BSD port still has that "feature", the
linux part abused drm_map for kernel internal usage as the local
map only existed as a typedef of the struct drm_map.
This patch fixes it by declaring struct drm_local_map separately
(though its content is currently identical to the userspace variant),
and changing the kernel code to only use that, except when it's a
user<->kernel interface (ie. ioctl).
This allows subsequent changes to the in-kernel format
I've also replaced the use of drm_local_map_t with struct drm_local_map
in a couple of places. Mostly by accident but they are the same (the
former is a typedef of the later) and I have some remote plans and
half finished patch to completely kill the drm_local_map_t typedef
so I left those bits in.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/gpu/drm/drm_vm.c')
-rw-r--r-- | drivers/gpu/drm/drm_vm.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c index 3ffae02..0d8bbd7 100644 --- a/drivers/gpu/drm/drm_vm.c +++ b/drivers/gpu/drm/drm_vm.c @@ -91,7 +91,7 @@ static int drm_do_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct drm_file *priv = vma->vm_file->private_data; struct drm_device *dev = priv->minor->dev; - struct drm_map *map = NULL; + struct drm_local_map *map = NULL; struct drm_map_list *r_list; struct drm_hash_item *hash; @@ -176,7 +176,7 @@ static int drm_do_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) */ static int drm_do_vm_shm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { - struct drm_map *map = (struct drm_map *) vma->vm_private_data; + struct drm_local_map *map = vma->vm_private_data; unsigned long offset; unsigned long i; struct page *page; @@ -209,7 +209,7 @@ static void drm_vm_shm_close(struct vm_area_struct *vma) struct drm_file *priv = vma->vm_file->private_data; struct drm_device *dev = priv->minor->dev; struct drm_vma_entry *pt, *temp; - struct drm_map *map; + struct drm_local_map *map; struct drm_map_list *r_list; int found_maps = 0; @@ -322,7 +322,7 @@ static int drm_do_vm_dma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) */ static int drm_do_vm_sg_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { - struct drm_map *map = (struct drm_map *) vma->vm_private_data; + struct drm_local_map *map = vma->vm_private_data; struct drm_file *priv = vma->vm_file->private_data; struct drm_device *dev = priv->minor->dev; struct drm_sg_mem *entry = dev->sg; @@ -512,7 +512,7 @@ static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma) return 0; } -unsigned long drm_core_get_map_ofs(struct drm_map * map) +unsigned long drm_core_get_map_ofs(struct drm_local_map * map) { return map->offset; } @@ -547,7 +547,7 @@ int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma) { struct drm_file *priv = filp->private_data; struct drm_device *dev = priv->minor->dev; - struct drm_map *map = NULL; + struct drm_local_map *map = NULL; unsigned long offset = 0; struct drm_hash_item *hash; |