RxOn
iowrite32(tp->csr6 | RxOn, ioaddr + CSR6);
RxTx = (TxOn | RxOn),
if ((readl(ioaddr + ChipCmd) & (TxOn|RxOn)) == 0)
writel(RxOn | TxOn, ioaddr + ChipCmd);
writel(RxOn, ioaddr + ChipCmd);
writel(RxOn, ioaddr + ChipCmd);
writel(RxOn | TxOn, ioaddr + ChipCmd);
writel(RxOn, ioaddr + ChipCmd);
cpw8(Cmd, RxOn | TxOn);
cpw8 (Cmd, cpr8 (Cmd) & (~RxOn | ~TxOn));