DHU_READ_WORD
c = DHU_READ_WORD(DHU_UBA_RBUF);
c = DHU_READ_WORD(DHU_UBA_STAT);
while ((c = DHU_READ_WORD(DHU_UBA_RBUF)) & DHU_RBUF_DATA_VALID) {
DHU_READ_WORD(DHU_UBA_TBUFCNT);
sc->sc_dhu[line].dhu_modem = DHU_READ_WORD(DHU_UBA_STAT);
DHU_READ_WORD(DHU_UBA_LNCTRL) |
DHU_READ_WORD(DHU_UBA_LNCTRL) & ~DHU_LNCTRL_DMA_ABORT);
DHU_READ_WORD(DHU_UBA_TBUFAD2) | DHU_TBUFAD2_DMA_START);
DHU_READ_WORD(DHU_UBA_TBUFAD2) | DHU_TBUFAD2_TX_ENABLE);
lnctrl = DHU_READ_WORD(DHU_UBA_LNCTRL);
status = DHU_READ_WORD(DHU_UBA_STAT);
lnctrl = DHU_READ_WORD(DHU_UBA_LNCTRL);