commit aadd4e17452d3d5c2269cd2b000b7de7cfb6c79e
author Alex Deucher <alexdeucher@gmail.com> Mon Sep 21 14:48:45 2009 +1000
committer Dave Airlie <airlied@redhat.com> Mon Sep 21 14:48:45 2009 +1000
tree 7db901a331809805874891319e0624c055a08662
parent 5a6e9f9658c853fea8ebbf64cd36287f00a011a2

drm/radeon: some r420s have a CP race with the DMA engine.

This patch makes sure the CP doesn't DMA do VRAM while 2D
is active by inserting a CP resync token.

todo: port to kms.

Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/radeon_drv.h

diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h
index bc79ad6..cb0cfe4 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.h
+++ b/drivers/gpu/drm/radeon/radeon_drv.h
@@ -1099,6 +1099,9 @@
 #	define RADEON_CSQ_PRIBM_INDBM		(4 << 28)
 #	define RADEON_CSQ_PRIPIO_INDPIO		(15 << 28)
 
+#define R300_CP_RESYNC_ADDR		0x0778
+#define R300_CP_RESYNC_DATA		0x077c
+
 #define RADEON_AIC_CNTL			0x01d0
 #	define RADEON_PCIGART_TRANSLATE_EN	(1 << 0)
 #	define RS400_MSI_REARM	                (1 << 3)