TxCtrl
iowrite32(0x80000000, ioaddr + TxCtrl);
iowrite32(0x80008000, ioaddr + TxCtrl);
iowrite32(0x10001000, yp->base + TxCtrl);
iowrite32(0x10001000, yp->base + TxCtrl);
ew32(TxCtrl, ep->mii.full_duplex ? 0x7f : 0x79);
ew32(TxCtrl, ep->mii.full_duplex ? 0x7f : 0x79);
ew32(TxCtrl, ep->mii.full_duplex ? 0x7F : 0x79);