ixgbe: add support for ACPI WOL for E610

Currently only APM (Advanced Power Management) is supported by
the ixgbe driver. It works for magic packets only, as for different
sources of wake-up E610 adapter utilizes different feature.

Add E610 specific implementation of ixgbe_set_wol() callback. When
any of broadcast/multicast/unicast wake-up is set, disable APM and
configure ACPI (Advanced Configuration and Power Interface).

Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Bharath R <bharath.r@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index 83d9ee3941e583c1a7823729d283ffd7d96add92..abc8c279192a93cebe56ca613de4d9769728e8a5 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -2365,6 +2365,50 @@ static int ixgbe_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
        return 0;
 }
 
+static int ixgbe_set_wol_acpi(struct net_device *netdev,
+                             struct ethtool_wolinfo *wol)
+{
+       struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
+       struct ixgbe_hw *hw = &adapter->hw;
+       u32 grc;
+
+       if (ixgbe_wol_exclusion(adapter, wol))
+               return wol->wolopts ? -EOPNOTSUPP : 0;
+
+       /* disable APM wakeup */
+       grc = IXGBE_READ_REG(hw, IXGBE_GRC_X550EM_a);
+       grc &= ~IXGBE_GRC_APME;
+       IXGBE_WRITE_REG(hw, IXGBE_GRC_X550EM_a, grc);
+
+       /* erase existing filters */
+       IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
+       adapter->wol = 0;
+
+       if (wol->wolopts & WAKE_UCAST)
+               adapter->wol |= IXGBE_WUFC_EX;
+       if (wol->wolopts & WAKE_MCAST)
+               adapter->wol |= IXGBE_WUFC_MC;
+       if (wol->wolopts & WAKE_BCAST)
+               adapter->wol |= IXGBE_WUFC_BC;
+
+       IXGBE_WRITE_REG(hw, IXGBE_WUC, IXGBE_WUC_PME_EN);
+       IXGBE_WRITE_REG(hw, IXGBE_WUFC, adapter->wol);
+
+       hw->wol_enabled = adapter->wol;
+       device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
+
+       return 0;
+}
+
+static int ixgbe_set_wol_e610(struct net_device *netdev,
+                             struct ethtool_wolinfo *wol)
+{
+       if (wol->wolopts & (WAKE_UCAST | WAKE_MCAST | WAKE_BCAST))
+               return ixgbe_set_wol_acpi(netdev, wol);
+       else
+               return ixgbe_set_wol(netdev, wol);
+}
+
 static int ixgbe_nway_reset(struct net_device *netdev)
 {
        struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
@@ -3656,7 +3700,7 @@ static const struct ethtool_ops ixgbe_ethtool_ops_e610 = {
        .get_regs_len           = ixgbe_get_regs_len,
        .get_regs               = ixgbe_get_regs,
        .get_wol                = ixgbe_get_wol,
-       .set_wol                = ixgbe_set_wol,
+       .set_wol                = ixgbe_set_wol_e610,
        .nway_reset             = ixgbe_nway_reset,
        .get_link               = ethtool_op_get_link,
        .get_eeprom_len         = ixgbe_get_eeprom_len,