WMREG_TXDCTL
CSR_WRITE(l, WMREG_TXDCTL, TXDCTL_PTHRESH(0) |
reg = CSR_READ(sc, WMREG_TXDCTL(0));
CSR_WRITE(sc, WMREG_TXDCTL(0), reg);
reg = CSR_READ(sc, WMREG_TXDCTL(1));
CSR_WRITE(sc, WMREG_TXDCTL(1), reg);
CSR_WRITE(sc, WMREG_TXDCTL(qid), TXDCTL_QUEUE_ENABLE
CSR_WRITE(sc, WMREG_TXDCTL(qid), TXDCTL_PTHRESH(0) |