CB_COLOR4_BASE   2242 drivers/gpu/drm/radeon/evergreend.h #define	CB_COLOR4_BASE					0x28d50
CB_COLOR4_BASE     74 drivers/gpu/drm/radeon/r600d.h #define	CB_COLOR4_BASE					0x28050
CB_COLOR4_BASE    317 drivers/gpu/drm/radeon/rv770d.h #define	CB_COLOR4_BASE					0x28050