NvRegMacAddrA
temp1 = readl(base + NvRegMacAddrA);
writel(temp1, base + NvRegMacAddrA);
writel(mac[0], base + NvRegMacAddrA);
np->orig_mac[0] = readl(base + NvRegMacAddrA);
writel(np->orig_mac[0], base + NvRegMacAddrA);