CP_BUSY_STAT      459 drivers/gpu/drm/radeon/evergreend.h #define	CP_BUSY_STAT				0x867C
CP_BUSY_STAT      316 drivers/gpu/drm/radeon/nid.h #define	CP_BUSY_STAT				0x867C
CP_BUSY_STAT      173 drivers/gpu/drm/radeon/r600d.h #define	CP_BUSY_STAT				0x867C