GenCtrl
writel(TxEnable|TxGFPEnable|RxEnable|RxGFPEnable, ioaddr + GenCtrl);
writel(TxEnable|RxEnable, ioaddr + GenCtrl);
writel(0, ioaddr + GenCtrl);
readl(ioaddr + GenCtrl);
writel(0, ioaddr + GenCtrl);