MGB_DMAC_TX_START
if ((error = mgb_dmac_control(sc, MGB_DMAC_TX_START, channel,
KASSERT(MGB_DMAC_STATE_IS_INITIAL(sc, MGB_DMAC_TX_START, channel),
if ((error = mgb_dmac_control(sc, MGB_DMAC_TX_START, channel,
mgb_dmac_control(sc, MGB_DMAC_TX_START, 0, DMAC_STOP);