ixgbe: Two small fixes for 82599 when bringing the device down and for WoL
The Tx DMA unit should be disabled when bringing the device down. Also,
the KX4 device with 82599 supports WoL, so we should clear the Wake Up
Status (WUS) after a PCIe slot reset.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 892195f..3e981a1 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -2558,6 +2558,11 @@
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j),
(txdctl & ~IXGBE_TXDCTL_ENABLE));
}
+ /* Disable the Tx DMA engine on 82599 */
+ if (hw->mac.type == ixgbe_mac_82599EB)
+ IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
+ (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
+ ~IXGBE_DMATXCTL_TE));
netif_carrier_off(netdev);
@@ -4794,7 +4799,7 @@
pci_enable_wake(pdev, PCI_D3cold, 0);
ixgbe_reset(adapter);
-
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
result = PCI_ERS_RESULT_RECOVERED;
}