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authorJeff Garzik <jeff@garzik.org>2006-06-08 15:56:17 -0400
committerJeff Garzik <jeff@garzik.org>2006-06-08 15:56:17 -0400
commitcac925a4aab1b7233d3beb591f53498816058a08 (patch)
treea800537068aa05fd426ff44b8efd52d66e6d2051 /drivers
parentbcd618e4eac6fbf82de05d23c15ecb694c62b8af (diff)
parent6224e01dccf2543a8f8b4d825baf1510c79c2878 (diff)
Merge branch 'upstream' of git://lost.foo-projects.org/~ahkok/git/netdev-2.6 into tmp
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/e100.c75
-rw-r--r--drivers/net/e1000/e1000_main.c114
2 files changed, 188 insertions, 1 deletions
diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 31ac001f551..f37170cc1a3 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -2780,6 +2780,80 @@ static void e100_shutdown(struct pci_dev *pdev)
DPRINTK(PROBE,ERR, "Error enabling wake\n");
}
+/* ------------------ PCI Error Recovery infrastructure -------------- */
+/**
+ * e100_io_error_detected - called when PCI error is detected.
+ * @pdev: Pointer to PCI device
+ * @state: The current pci conneection state
+ */
+static pci_ers_result_t e100_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+
+ /* Similar to calling e100_down(), but avoids adpater I/O. */
+ netdev->stop(netdev);
+
+ /* Detach; put netif into state similar to hotplug unplug. */
+ netif_poll_enable(netdev);
+ netif_device_detach(netdev);
+
+ /* Request a slot reset. */
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * e100_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch.
+ */
+static pci_ers_result_t e100_io_slot_reset(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct nic *nic = netdev_priv(netdev);
+
+ if (pci_enable_device(pdev)) {
+ printk(KERN_ERR "e100: Cannot re-enable PCI device after reset.\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+ pci_set_master(pdev);
+
+ /* Only one device per card can do a reset */
+ if (0 != PCI_FUNC(pdev->devfn))
+ return PCI_ERS_RESULT_RECOVERED;
+ e100_hw_reset(nic);
+ e100_phy_init(nic);
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * e100_io_resume - resume normal operations
+ * @pdev: Pointer to PCI device
+ *
+ * Resume normal operations after an error recovery
+ * sequence has been completed.
+ */
+static void e100_io_resume(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct nic *nic = netdev_priv(netdev);
+
+ /* ack any pending wake events, disable PME */
+ pci_enable_wake(pdev, 0, 0);
+
+ netif_device_attach(netdev);
+ if (netif_running(netdev)) {
+ e100_open(netdev);
+ mod_timer(&nic->watchdog, jiffies);
+ }
+}
+
+static struct pci_error_handlers e100_err_handler = {
+ .error_detected = e100_io_error_detected,
+ .slot_reset = e100_io_slot_reset,
+ .resume = e100_io_resume,
+};
static struct pci_driver e100_driver = {
.name = DRV_NAME,
@@ -2791,6 +2865,7 @@ static struct pci_driver e100_driver = {
.resume = e100_resume,
#endif
.shutdown = e100_shutdown,
+ .err_handler = &e100_err_handler,
};
static int __init e100_init_module(void)
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 115eff25d8c..56c7492e3e9 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -189,6 +189,16 @@ static void e1000_shutdown(struct pci_dev *pdev);
static void e1000_netpoll (struct net_device *netdev);
#endif
+static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state);
+static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
+static void e1000_io_resume(struct pci_dev *pdev);
+
+static struct pci_error_handlers e1000_err_handler = {
+ .error_detected = e1000_io_error_detected,
+ .slot_reset = e1000_io_slot_reset,
+ .resume = e1000_io_resume,
+};
static struct pci_driver e1000_driver = {
.name = e1000_driver_name,
@@ -200,7 +210,8 @@ static struct pci_driver e1000_driver = {
.suspend = e1000_suspend,
.resume = e1000_resume,
#endif
- .shutdown = e1000_shutdown
+ .shutdown = e1000_shutdown,
+ .err_handler = &e1000_err_handler
};
MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
@@ -3039,6 +3050,10 @@ e1000_update_stats(struct e1000_adapter *adapter)
#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
+ /* Prevent stats update while adapter is being reset */
+ if (adapter->link_speed == 0)
+ return;
+
spin_lock_irqsave(&adapter->stats_lock, flags);
/* these counters are modified from e1000_adjust_tbi_stats,
@@ -4590,4 +4605,101 @@ e1000_netpoll(struct net_device *netdev)
}
#endif
+/**
+ * e1000_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci conneection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev->priv;
+
+ netif_device_detach(netdev);
+
+ if (netif_running(netdev))
+ e1000_down(adapter);
+
+ /* Request a slot slot reset. */
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * e1000_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot. Implementation
+ * resembles the first-half of the e1000_resume routine.
+ */
+static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev->priv;
+
+ if (pci_enable_device(pdev)) {
+ printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+ pci_set_master(pdev);
+
+ pci_enable_wake(pdev, 3, 0);
+ pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
+
+ /* Perform card reset only on one instance of the card */
+ if (PCI_FUNC (pdev->devfn) != 0)
+ return PCI_ERS_RESULT_RECOVERED;
+
+ e1000_reset(adapter);
+ E1000_WRITE_REG(&adapter->hw, WUS, ~0);
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * e1000_io_resume - called when traffic can start flowing again.
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells us that
+ * its OK to resume normal operation. Implementation resembles the
+ * second-half of the e1000_resume routine.
+ */
+static void e1000_io_resume(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev->priv;
+ uint32_t manc, swsm;
+
+ if (netif_running(netdev)) {
+ if (e1000_up(adapter)) {
+ printk("e1000: can't bring device back up after reset\n");
+ return;
+ }
+ }
+
+ netif_device_attach(netdev);
+
+ if (adapter->hw.mac_type >= e1000_82540 &&
+ adapter->hw.media_type == e1000_media_type_copper) {
+ manc = E1000_READ_REG(&adapter->hw, MANC);
+ manc &= ~(E1000_MANC_ARP_EN);
+ E1000_WRITE_REG(&adapter->hw, MANC, manc);
+ }
+
+ switch (adapter->hw.mac_type) {
+ case e1000_82573:
+ swsm = E1000_READ_REG(&adapter->hw, SWSM);
+ E1000_WRITE_REG(&adapter->hw, SWSM,
+ swsm | E1000_SWSM_DRV_LOAD);
+ break;
+ default:
+ break;
+ }
+
+ if (netif_running(netdev))
+ mod_timer(&adapter->watchdog_timer, jiffies);
+}
+
/* e1000_main.c */