ixgbe: add device support for 82598AT (copper 10GbE) adapters

Intel is currently shipping support for adapters with a phy
that does 10GBase-T (copper), which is 10 Gigabit ethernet
over standard Category 6 cabling.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index 81a9c4b8672..fee56a38381 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -149,6 +149,8 @@ static int ixgbe_set_settings(struct net_device *netdev,
 {
         struct ixgbe_adapter *adapter = netdev_priv(netdev);
         struct ixgbe_hw *hw = &adapter->hw;
+        u32 advertised, old;
+        s32 err;
 
         switch (hw->phy.media_type) {
         case ixgbe_media_type_fiber:
@@ -157,6 +159,31 @@ static int ixgbe_set_settings(struct net_device *netdev,
                         return -EINVAL;
                 /* in this case we currently only support 10Gb/FULL */
                 break;
+        case ixgbe_media_type_copper:
+                /* 10000/copper and 1000/copper must autoneg
+                 * this function does not support any duplex forcing, but can
+                 * limit the advertising of the adapter to only 10000 or 1000 */
+                if (ecmd->autoneg == AUTONEG_DISABLE)
+                        return -EINVAL;
+
+                old = hw->phy.autoneg_advertised;
+                advertised = 0;
+                if (ecmd->advertising & ADVERTISED_10000baseT_Full)
+                        advertised |= IXGBE_LINK_SPEED_10GB_FULL;
+
+                if (ecmd->advertising & ADVERTISED_1000baseT_Full)
+                        advertised |= IXGBE_LINK_SPEED_1GB_FULL;
+
+                if (old == advertised)
+                        break;
+                /* this sets the link speed and restarts auto-neg */
+                err = hw->mac.ops.setup_link_speed(hw, advertised, true, true);
+                if (err) {
+                        DPRINTK(PROBE, INFO,
+                                "setup link failed with code %d\n", err);
+                        hw->mac.ops.setup_link_speed(hw, old, true, true);
+                }
+                break;
         default:
                 break;
         }