RTL_GIGA_MAC_NONE
RTL_GIGA_MAC_VER_LAST = RTL_GIGA_MAC_NONE - 1,
{ 0x000, 0x000, RTL_GIGA_MAC_NONE }
{ 0x00000000, 0x00000000, RTL_GIGA_MAC_NONE }
if (chip->mac_version == RTL_GIGA_MAC_NONE)