igc: Add setup link functionality

Add link establishment methods
Add auto negotiation methods
Add read MAC address method

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 14f324826604..e1a078e084f0 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -3403,6 +3403,25 @@ static int igc_probe(struct pci_dev *pdev,
         netdev->min_mtu = ETH_MIN_MTU;
         netdev->max_mtu = MAX_STD_JUMBO_FRAME_SIZE;
 
+        /* before reading the NVM, reset the controller to put the device in a
+         * known good starting state
+         */
+        hw->mac.ops.reset_hw(hw);
+
+        if (eth_platform_get_mac_address(&pdev->dev, hw->mac.addr)) {
+                /* copy the MAC address out of the NVM */
+                if (hw->mac.ops.read_mac_addr(hw))
+                        dev_err(&pdev->dev, "NVM Read Error\n");
+        }
+
+        memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
+
+        if (!is_valid_ether_addr(netdev->dev_addr)) {
+                dev_err(&pdev->dev, "Invalid MAC Address\n");
+                err = -EIO;
+                goto err_eeprom;
+        }
+
         /* configure RXPBSIZE and TXPBSIZE */
         wr32(IGC_RXPBS, I225_RXPBSIZE_DEFAULT);
         wr32(IGC_TXPBS, I225_TXPBSIZE_DEFAULT);
@@ -3411,6 +3430,14 @@ static int igc_probe(struct pci_dev *pdev,
 
         INIT_WORK(&adapter->reset_task, igc_reset_task);
 
+        /* Initialize link properties that are user-changeable */
+        adapter->fc_autoneg = true;
+        hw->mac.autoneg = true;
+        hw->phy.autoneg_advertised = 0xaf;
+
+        hw->fc.requested_mode = igc_fc_default;
+        hw->fc.current_mode = igc_fc_default;
+
         /* reset the hardware with the new settings */
         igc_reset(adapter);
 
@@ -3438,6 +3465,9 @@ static int igc_probe(struct pci_dev *pdev,
 
 err_register:
         igc_release_hw_control(adapter);
+err_eeprom:
+        if (!igc_check_reset_block(hw))
+                igc_reset_phy(hw);
 err_sw_init:
         igc_clear_interrupt_scheme(adapter);
         iounmap(adapter->io_addr);