RxCtrl
iowrite32(0x80000000, ioaddr + RxCtrl);
iowrite32(0x80008000, ioaddr + RxCtrl); /* Start Rx and Tx channels. */
iowrite32(0x10001000, ioaddr + RxCtrl); /* Wake Rx engine. */
ew32(RxCtrl, 0x002c);
ew32(RxCtrl, 0x000c);
ew32(RxCtrl, 0x0004);