drm: GEM mmap support

Add core support for mapping of GEM objects.  Drivers should provide a
vm_operations_struct if they want to support page faulting of objects.
The code for handling GEM object offsets was taken from TTM, which was
written by Thomas Hellström.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/drm/drm.h b/include/drm/drm.h
index 3fb173c5af3e..3a66252456ba 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -173,6 +173,7 @@ enum drm_map_type {
         _DRM_AGP = 3,             /**< AGP/GART */
         _DRM_SCATTER_GATHER = 4,  /**< Scatter/gather memory for PCI DMA */
         _DRM_CONSISTENT = 5,      /**< Consistent memory for PCI DMA */
+        _DRM_GEM = 6,             /**< GEM object */
 };
 
 /**