XGMAC_ADDR_HIGH
writel(1, priv->base + XGMAC_ADDR_HIGH(31));
if (readl(priv->base + XGMAC_ADDR_HIGH(31)) == 1)
writel(data, ioaddr + XGMAC_ADDR_HIGH(num));
writel(0, ioaddr + XGMAC_ADDR_HIGH(num));
hi_addr = readl(ioaddr + XGMAC_ADDR_HIGH(num));