diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/e100.c | 75 | ||||
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 114 |
2 files changed, 188 insertions, 1 deletions
diff --git a/drivers/net/e100.c b/drivers/net/e100.c index 31ac001f5517..f37170cc1a37 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 115eff25d8c1..56c7492e3e91 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 */ |
