WRITE_RB
WRITE_RB( CP_PACKET0( RADEON_CP_IB_BASE, 2 ));
WRITE_RB( cp->buffers.vm_start +
WRITE_RB( state_buffer_size );
WRITE_RB( CP_PACKET0( RADEON_CP_IB_BASE, 2 ));
WRITE_RB( cp->buffers.vm_start + buffer_idx * INDIRECT_BUFFER_SIZE * sizeof( uint32 ));
WRITE_RB( buffer_size );
WRITE_RB( CP_PACKET0( RADEON_SCRATCH_REG1, 1 ));
WRITE_RB( cp->buffers.buffers[buffer_idx].send_tag = (int32)++cp->buffers.cur_tag );