RADEON_RB2D_DC_FLUSH_ALL
WRITE_IB_REG( RADEON_RB2D_DSTCACHE_CTLSTAT, RADEON_RB2D_DC_FLUSH_ALL );
OUTREG( ai->regs, RADEON_RB2D_DSTCACHE_CTLSTAT, RADEON_RB2D_DC_FLUSH_ALL);
OUTREGP( di->regs, RADEON_RB2D_DSTCACHE_CTLSTAT, RADEON_RB2D_DC_FLUSH_ALL,
~RADEON_RB2D_DC_FLUSH_ALL );