ixgbe: Display EEPROM version in ethtool -i queries

Currently ixgbe does not display the EEPROM version in ethtool -i, where
other drivers do.  The EEPROM version is located at offset 0x29.  This
patch adds support to display it.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ixgbe/ixgbe.h

@@ -310,6 +310,8 @@ struct ixgbe_adapter {
 	struct work_struct watchdog_task;
 	struct work_struct sfp_task;
 	struct timer_list sfp_timer;
+
+	u16 eeprom_version;
 };
 
 enum ixbge_state_t {

drivers/net/ixgbe/ixgbe_ethtool.c

@@ -679,10 +679,17 @@ static void ixgbe_get_drvinfo(struct net_device *netdev,
                               struct ethtool_drvinfo *drvinfo)
 {
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
+	char firmware_version[32];
 
 	strncpy(drvinfo->driver, ixgbe_driver_name, 32);
 	strncpy(drvinfo->version, ixgbe_driver_version, 32);
-	strncpy(drvinfo->fw_version, "N/A", 32);
+
+	sprintf(firmware_version, "%d.%d-%d",
+	        (adapter->eeprom_version & 0xF000) >> 12,
+	        (adapter->eeprom_version & 0x0FF0) >> 4,
+	        adapter->eeprom_version & 0x000F);
+
+	strncpy(drvinfo->fw_version, firmware_version, 32);
 	strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
 	drvinfo->n_stats = IXGBE_STATS_LEN;
 	drvinfo->regdump_len = ixgbe_get_regs_len(netdev);

drivers/net/ixgbe/ixgbe_main.c

@@ -4191,6 +4191,9 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 		         "PCI-Express slot is required.\n");
 	}
 
+	/* save off EEPROM version number */
+	hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
+
 	/* reset the hardware with the new settings */
 	hw->mac.ops.start_hw(hw);