drm: Add general-purpose packet for manipulating scratch registers (r300)

From: Aapo Tahkola (via DRM CVS)
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/char/drm/radeon_drm.h b/drivers/char/drm/radeon_drm.h
index bb63e6806fd1..c8e279e89c2e 100644
--- a/drivers/char/drm/radeon_drm.h
+++ b/drivers/char/drm/radeon_drm.h
@@ -222,6 +222,7 @@ typedef union {
 #       define R300_WAIT_3D             0x2
 #       define R300_WAIT_2D_CLEAN       0x3
 #       define R300_WAIT_3D_CLEAN       0x4
+#define R300_CMD_SCRATCH                8
 
 typedef union {
         unsigned int u;
@@ -247,6 +248,9 @@ typedef union {
         struct {
                 unsigned char cmd_type, flags, pad0, pad1;
         } wait;
+        struct {
+                unsigned char cmd_type, reg, n_bufs, flags;
+        } scratch;
 } drm_r300_cmd_header_t;
 
 #define RADEON_FRONT                    0x1