NETSEC_REG_DMA_MH_CTRL
netsec_write(priv, NETSEC_REG_DMA_MH_CTRL,
while (netsec_read(priv, NETSEC_REG_DMA_MH_CTRL) &
netsec_write(priv, NETSEC_REG_DMA_MH_CTRL, MH_CTRL__MODE_TRANS);