DB_DEBUG4        3275 drivers/gpu/drm/radeon/evergreen_cs.c 	case DB_DEBUG4:
DB_DEBUG4        1443 drivers/gpu/drm/radeon/rv770.c 		db_debug4 = RREG32(DB_DEBUG4);
DB_DEBUG4        1445 drivers/gpu/drm/radeon/rv770.c 		WREG32(DB_DEBUG4, db_debug4);