drm: add framebuffer maps

The patch makes drmAddBufs/drmMapBufs can handle buffers in video memory

The attached patch adds a new buffer type DRM_FB_BUFFER. It works like
AGP memory but uses video memory.

From: Austin Yuan <austinyuan@viatech.com.cn>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h
index 5df09cc8c6db..804e622436a9 100644
--- a/drivers/char/drm/drmP.h
+++ b/drivers/char/drm/drmP.h
@@ -96,6 +96,7 @@
 #define DRIVER_IRQ_SHARED  0x80
 #define DRIVER_IRQ_VBL     0x100
 #define DRIVER_DMA_QUEUE   0x200
+#define DRIVER_FB_DMA      0x400
 
 /***********************************************************************/
 /** \name Begin the DRM... */
@@ -474,7 +475,8 @@ typedef struct drm_device_dma {
         unsigned long     byte_count;
         enum {
                 _DRM_DMA_USE_AGP = 0x01,
-                _DRM_DMA_USE_SG  = 0x02
+                _DRM_DMA_USE_SG  = 0x02,
+                _DRM_DMA_USE_FB  = 0x04
         } flags;
 
 } drm_device_dma_t;