igc: Expose the NVM version

Expose the NVM map version via drvinfo in ethtool
NVM image version is reported as firmware version for i225 device
Minor typo fix - remove space
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/igc/igc.h

@@ -217,6 +217,8 @@ struct igc_adapter {
 	struct timecounter tc;
 	struct timespec64 prev_ptp_time; /* Pre-reset PTP clock */
 	ktime_t ptp_reset_start; /* Reset time in clock mono */
+
+	char fw_version[16];
 };
 
 void igc_up(struct igc_adapter *adapter);

drivers/net/ethernet/intel/igc/igc_defines.h

@@ -160,6 +160,7 @@
 #define IGC_NVM_RW_REG_START	1    /* Start operation */
 #define IGC_NVM_RW_ADDR_SHIFT	2    /* Shift to the address bits */
 #define IGC_NVM_POLL_READ	0    /* Flag for polling for read complete */
+#define IGC_NVM_DEV_STARTER	5    /* Dev_starter Version */
 
 /* NVM Word Offsets */
 #define NVM_CHECKSUM_REG		0x003F

drivers/net/ethernet/intel/igc/igc_ethtool.c

@@ -129,10 +129,22 @@ static void igc_ethtool_get_drvinfo(struct net_device *netdev,
 				    struct ethtool_drvinfo *drvinfo)
 {
 	struct igc_adapter *adapter = netdev_priv(netdev);
+	struct igc_hw *hw = &adapter->hw;
+	u16 nvm_version = 0;
+
+	strscpy(drvinfo->driver, igc_driver_name, sizeof(drvinfo->driver));
+
+	/* NVM image version is reported as firmware version for i225 device */
+	hw->nvm.ops.read(hw, IGC_NVM_DEV_STARTER, 1, &nvm_version);
+
+	scnprintf(adapter->fw_version,
+		  sizeof(adapter->fw_version),
+		  "%x",
+		  nvm_version);
 
-	strlcpy(drvinfo->driver,  igc_driver_name, sizeof(drvinfo->driver));
+	strscpy(drvinfo->fw_version, adapter->fw_version,
+		sizeof(drvinfo->fw_version));
 
-	/* add fw_version here */
 	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
 		sizeof(drvinfo->bus_info));