ixgbe: Implement PCIe AER support

This patch implements the PCIe Advanced Error Reporting callbacks in
ixgbe.  The 82598 hardware supports AER, so we enable it.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 34 insertions, 8 deletions

diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index 6cbf26e3db80..e112008f39c1 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -32,6 +32,7 @@
 #include <linux/pci.h>
 #include <linux/netdevice.h>
 #include <linux/inet_lro.h>
+#include <linux/aer.h>
 
 #include "ixgbe_type.h"
 #include "ixgbe_common.h"
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index a7aa892fee3f..d6f666ae38d3 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -4020,6 +4020,13 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
                 goto err_pci_reg;
         }
 
+        err = pci_enable_pcie_error_reporting(pdev);
+        if (err) {
+                dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed "
+                                    "0x%x\n", err);
+                /* non-fatal, continue */
+        }
+
         pci_set_master(pdev);
         pci_save_state(pdev);
 
@@ -4257,6 +4264,7 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev)
 {
         struct net_device *netdev = pci_get_drvdata(pdev);
         struct ixgbe_adapter *adapter = netdev_priv(netdev);
+        int err;
 
         set_bit(__IXGBE_DOWN, &adapter->state);
         /* clear the module not found bit to make sure the worker won't
@@ -4295,6 +4303,11 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev)
 
         free_netdev(netdev);
 
+        err = pci_disable_pcie_error_reporting(pdev);
+        if (err)
+                dev_err(&pdev->dev,
+                        "pci_disable_pcie_error_reporting failed 0x%x\n", err);
+
         pci_disable_device(pdev);
 }
 
@@ -4332,21 +4345,33 @@ static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
 {
         struct net_device *netdev = pci_get_drvdata(pdev);
         struct ixgbe_adapter *adapter = netdev_priv(netdev);
+        pci_ers_result_t result;
+        int err;
 
         if (pci_enable_device(pdev)) {
                 DPRINTK(PROBE, ERR,
                         "Cannot re-enable PCI device after reset.\n");
-                return PCI_ERS_RESULT_DISCONNECT;
-        }
-        pci_set_master(pdev);
-        pci_restore_state(pdev);
+                result = PCI_ERS_RESULT_DISCONNECT;
+        } else {
+                pci_set_master(pdev);
+                pci_restore_state(pdev);
 
-        pci_enable_wake(pdev, PCI_D3hot, 0);
-        pci_enable_wake(pdev, PCI_D3cold, 0);
+                pci_enable_wake(pdev, PCI_D3hot, 0);
+                pci_enable_wake(pdev, PCI_D3cold, 0);
 
-        ixgbe_reset(adapter);
+                ixgbe_reset(adapter);
+
+                result = PCI_ERS_RESULT_RECOVERED;
+        }
+
+        err = pci_cleanup_aer_uncorrect_error_status(pdev);
+        if (err) {
+                dev_err(&pdev->dev,
+                  "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", err);
+                /* non-fatal, continue */
+        }
 
-        return PCI_ERS_RESULT_RECOVERED;
+        return result;
 }
 
 /**