Don't read scratch registers directly, obtain the values via the GET_PARAM

    ioctl. The DRM reads them from memory addresses the chip writes to on
    updates. Fall back to reading the registers directly with an old DRM.
(Tim Smith, cleanups by myself)

1 files changed, 3 insertions, 0 deletions

diff --git a/shared-core/radeon_drm.h b/shared-core/radeon_drm.h
index dd24d429..3802e46c 100644
--- a/shared-core/radeon_drm.h
+++ b/shared-core/radeon_drm.h
@@ -458,6 +458,9 @@ typedef struct drm_radeon_indirect {
  * client any other way.  
  */
 #define RADEON_PARAM_AGP_BUFFER_OFFSET 0x1
+#define RADEON_PARAM_LAST_FRAME 0x2
+#define RADEON_PARAM_LAST_DISPATCH 0x3
+#define RADEON_PARAM_LAST_CLEAR 0x4
 
 typedef struct drm_radeon_getparam {
 	int param;