34 #define GET_RING_HEAD(ring)		readl(  (volatile u32 *) (ring)->head )  argument
35 #define SET_RING_HEAD(ring,val)		writel( (val), (volatile u32 *) (ring)->head )  argument
74 	drm_radeon_ring_buffer_t ring;  member
805 		u32 head = GET_RING_HEAD(&dev_priv->ring);		\
806 		if (head == dev_priv->ring.tail)			\
844 #define RING_LOCALS	int write, _nr; unsigned int mask; u32 *ring;
851 	if ( dev_priv->ring.space <= (n) * sizeof(u32) ) {		\
855 	_nr = n; dev_priv->ring.space -= (n) * sizeof(u32);		\
856 	ring = dev_priv->ring.start;					\
857 	write = dev_priv->ring.tail;					\
858 	mask = dev_priv->ring.tail_mask;				\
864 			  write, dev_priv->ring.tail );			\
866 	if (((dev_priv->ring.tail + _nr) & mask) != write) {		\
869 			((dev_priv->ring.tail + _nr) & mask),		\
872 		dev_priv->ring.tail = write;				\
878 	GET_RING_HEAD( &dev_priv->ring );				\
879 	RADEON_WRITE( RADEON_CP_RB_WPTR, dev_priv->ring.tail );		    \
889 	ring[write++] = (x);						\
905 		if (__copy_from_user( (int *)(ring+write),	\
913 	if (_size && __copy_from_user( (int *)(ring+write),	\