diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h index 2bc34fbfa69c0ee93b7b17f277c6fd14e67d4712..2b96ad0482efad8a11d3f8815b0db1fc8b68cb66 100644 --- a/drivers/net/e1000/e1000.h +++ b/drivers/net/e1000/e1000.h @@ -69,7 +69,6 @@ #ifdef NETIF_F_TSO #include #endif -#include #include #include #include @@ -255,7 +254,6 @@ struct e1000_adapter { spinlock_t tx_queue_lock; #endif atomic_t irq_sem; - struct work_struct watchdog_task; struct work_struct reset_task; uint8_t fc_autoneg; @@ -340,8 +338,13 @@ struct e1000_adapter { #ifdef NETIF_F_TSO boolean_t tso_force; #endif + unsigned long flags; }; +enum e1000_state_t { + __E1000_DRIVER_TESTING, + __E1000_RESETTING, +}; /* e1000_main.c */ extern char e1000_driver_name[]; @@ -349,6 +352,7 @@ extern char e1000_driver_version[]; int e1000_up(struct e1000_adapter *adapter); void e1000_down(struct e1000_adapter *adapter); void e1000_reset(struct e1000_adapter *adapter); +void e1000_reinit_locked(struct e1000_adapter *adapter); int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); void e1000_free_all_tx_resources(struct e1000_adapter *adapter); int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c index 845d293b2f6adce9fe03ca7c59105fef735a4c60..cf5c5f46341fd21ef04ea0e1d2264365d135ba96 100644 --- a/drivers/net/e1000/e1000_ethtool.c +++ b/drivers/net/e1000/e1000_ethtool.c @@ -203,11 +203,9 @@ e1000_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) /* reset the link */ - if (netif_running(adapter->netdev)) { - e1000_down(adapter); - e1000_reset(adapter); - e1000_up(adapter); - } else + if (netif_running(adapter->netdev)) + e1000_reinit_locked(adapter); + else e1000_reset(adapter); return 0; @@ -254,10 +252,9 @@ e1000_set_pauseparam(struct net_device *netdev, hw->original_fc = hw->fc; if (adapter->fc_autoneg == AUTONEG_ENABLE) { - if (netif_running(adapter->netdev)) { - e1000_down(adapter); - e1000_up(adapter); - } else + if (netif_running(adapter->netdev)) + e1000_reinit_locked(adapter); + else e1000_reset(adapter); } else return ((hw->media_type == e1000_media_type_fiber) ? @@ -279,10 +276,9 @@ e1000_set_rx_csum(struct net_device *netdev, uint32_t data) struct e1000_adapter *adapter = netdev_priv(netdev); adapter->rx_csum = data; - if (netif_running(netdev)) { - e1000_down(adapter); - e1000_up(adapter); - } else + if (netif_running(netdev)) + e1000_reinit_locked(adapter); + else e1000_reset(adapter); return 0; } @@ -631,6 +627,9 @@ e1000_set_ringparam(struct net_device *netdev, tx_ring_size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues; rx_ring_size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues; + while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) + msleep(1); + if (netif_running(adapter->netdev)) e1000_down(adapter); @@ -691,9 +690,11 @@ e1000_set_ringparam(struct net_device *netdev, adapter->rx_ring = rx_new; adapter->tx_ring = tx_new; if ((err = e1000_up(adapter))) - return err; + goto err_setup; } + clear_bit(__E1000_RESETTING, &adapter->flags); + return 0; err_setup_tx: e1000_free_all_rx_resources(adapter); @@ -701,6 +702,8 @@ e1000_set_ringparam(struct net_device *netdev, adapter->rx_ring = rx_old; adapter->tx_ring = tx_old; e1000_up(adapter); +err_setup: + clear_bit(__E1000_RESETTING, &adapter->flags); return err; } @@ -1568,6 +1571,7 @@ e1000_diag_test(struct net_device *netdev, struct e1000_adapter *adapter = netdev_priv(netdev); boolean_t if_running = netif_running(netdev); + set_bit(__E1000_DRIVER_TESTING, &adapter->flags); if (eth_test->flags == ETH_TEST_FL_OFFLINE) { /* Offline tests */ @@ -1582,7 +1586,8 @@ e1000_diag_test(struct net_device *netdev, eth_test->flags |= ETH_TEST_FL_FAILED; if (if_running) - e1000_down(adapter); + /* indicate we're in test mode */ + dev_close(netdev); else e1000_reset(adapter); @@ -1607,8 +1612,9 @@ e1000_diag_test(struct net_device *netdev, adapter->hw.autoneg = autoneg; e1000_reset(adapter); + clear_bit(__E1000_DRIVER_TESTING, &adapter->flags); if (if_running) - e1000_up(adapter); + dev_open(netdev); } else { /* Online tests */ if (e1000_link_test(adapter, &data[4])) @@ -1619,6 +1625,8 @@ e1000_diag_test(struct net_device *netdev, data[1] = 0; data[2] = 0; data[3] = 0; + + clear_bit(__E1000_DRIVER_TESTING, &adapter->flags); } msleep_interruptible(4 * 1000); } @@ -1807,10 +1815,8 @@ static int e1000_nway_reset(struct net_device *netdev) { struct e1000_adapter *adapter = netdev_priv(netdev); - if (netif_running(netdev)) { - e1000_down(adapter); - e1000_up(adapter); - } + if (netif_running(netdev)) + e1000_reinit_locked(adapter); return 0; } diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index a373ccb308d8d3281298bee38c1a5dcbfcc8ca7f..52d698bb2595c32bc03f2e765a66ffe783059d77 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -133,7 +133,6 @@ static void e1000_clean_rx_ring(struct e1000_adapter *adapter, static void e1000_set_multi(struct net_device *netdev); static void e1000_update_phy_info(unsigned long data); static void e1000_watchdog(unsigned long data); -static void e1000_watchdog_task(struct e1000_adapter *adapter); static void e1000_82547_tx_fifo_stall(unsigned long data); static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); static struct net_device_stats * e1000_get_stats(struct net_device *netdev); @@ -261,6 +260,44 @@ e1000_exit_module(void) module_exit(e1000_exit_module); +static int e1000_request_irq(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + int flags, err = 0; + + flags = SA_SHIRQ | SA_SAMPLE_RANDOM; +#ifdef CONFIG_PCI_MSI + if (adapter->hw.mac_type > e1000_82547_rev_2) { + adapter->have_msi = TRUE; + if ((err = pci_enable_msi(adapter->pdev))) { + DPRINTK(PROBE, ERR, + "Unable to allocate MSI interrupt Error: %d\n", err); + adapter->have_msi = FALSE; + } + } + if (adapter->have_msi) + flags &= ~SA_SHIRQ; +#endif + if ((err = request_irq(adapter->pdev->irq, &e1000_intr, flags, + netdev->name, netdev))) + DPRINTK(PROBE, ERR, + "Unable to allocate interrupt Error: %d\n", err); + + return err; +} + +static void e1000_free_irq(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + + free_irq(adapter->pdev->irq, netdev); + +#ifdef CONFIG_PCI_MSI + if (adapter->have_msi) + pci_disable_msi(adapter->pdev); +#endif +} + /** * e1000_irq_disable - Mask off interrupt generation on the NIC * @adapter: board private structure @@ -387,7 +424,7 @@ int e1000_up(struct e1000_adapter *adapter) { struct net_device *netdev = adapter->netdev; - int i, err; + int i; /* hardware has been reset, we need to reload some things */ @@ -415,24 +452,6 @@ e1000_up(struct e1000_adapter *adapter) E1000_DESC_UNUSED(ring)); } -#ifdef CONFIG_PCI_MSI - if (adapter->hw.mac_type > e1000_82547_rev_2) { - adapter->have_msi = TRUE; - if ((err = pci_enable_msi(adapter->pdev))) { - DPRINTK(PROBE, ERR, - "Unable to allocate MSI interrupt Error: %d\n", err); - adapter->have_msi = FALSE; - } - } -#endif - if ((err = request_irq(adapter->pdev->irq, &e1000_intr, - SA_SHIRQ | SA_SAMPLE_RANDOM, - netdev->name, netdev))) { - DPRINTK(PROBE, ERR, - "Unable to allocate interrupt Error: %d\n", err); - return err; - } - adapter->tx_queue_len = netdev->tx_queue_len; mod_timer(&adapter->watchdog_timer, jiffies); @@ -450,16 +469,10 @@ e1000_down(struct e1000_adapter *adapter) { struct net_device *netdev = adapter->netdev; boolean_t mng_mode_enabled = (adapter->hw.mac_type >= e1000_82571) && - e1000_check_mng_mode(&adapter->hw); + e1000_check_mng_mode(&adapter->hw); e1000_irq_disable(adapter); - free_irq(adapter->pdev->irq, netdev); -#ifdef CONFIG_PCI_MSI - if (adapter->hw.mac_type > e1000_82547_rev_2 && - adapter->have_msi == TRUE) - pci_disable_msi(adapter->pdev); -#endif del_timer_sync(&adapter->tx_fifo_stall_timer); del_timer_sync(&adapter->watchdog_timer); del_timer_sync(&adapter->phy_info_timer); @@ -495,6 +508,17 @@ e1000_down(struct e1000_adapter *adapter) } } +void +e1000_reinit_locked(struct e1000_adapter *adapter) +{ + WARN_ON(in_interrupt()); + while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) + msleep(1); + e1000_down(adapter); + e1000_up(adapter); + clear_bit(__E1000_RESETTING, &adapter->flags); +} + void e1000_reset(struct e1000_adapter *adapter) { @@ -758,9 +782,6 @@ e1000_probe(struct pci_dev *pdev, adapter->watchdog_timer.function = &e1000_watchdog; adapter->watchdog_timer.data = (unsigned long) adapter; - INIT_WORK(&adapter->watchdog_task, - (void (*)(void *))e1000_watchdog_task, adapter); - init_timer(&adapter->phy_info_timer); adapter->phy_info_timer.function = &e1000_update_phy_info; adapter->phy_info_timer.data = (unsigned long) adapter; @@ -1078,6 +1099,10 @@ e1000_open(struct net_device *netdev) struct e1000_adapter *adapter = netdev_priv(netdev); int err; + /* disallow open during test */ + if (test_bit(__E1000_DRIVER_TESTING, &adapter->flags)) + return -EBUSY; + /* allocate transmit descriptors */ if ((err = e1000_setup_all_tx_resources(adapter))) @@ -1088,6 +1113,10 @@ e1000_open(struct net_device *netdev) if ((err = e1000_setup_all_rx_resources(adapter))) goto err_setup_rx; + err = e1000_request_irq(adapter); + if (err) + goto err_up; + if ((err = e1000_up(adapter))) goto err_up; adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; @@ -1131,7 +1160,9 @@ e1000_close(struct net_device *netdev) { struct e1000_adapter *adapter = netdev_priv(netdev); + WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); e1000_down(adapter); + e1000_free_irq(adapter); e1000_free_all_tx_resources(adapter); e1000_free_all_rx_resources(adapter); @@ -2201,14 +2232,6 @@ static void e1000_watchdog(unsigned long data) { struct e1000_adapter *adapter = (struct e1000_adapter *) data; - - /* Do the rest outside of interrupt context */ - schedule_work(&adapter->watchdog_task); -} - -static void -e1000_watchdog_task(struct e1000_adapter *adapter) -{ struct net_device *netdev = adapter->netdev; struct e1000_tx_ring *txdr = adapter->tx_ring; uint32_t link, tctl; @@ -2919,8 +2942,7 @@ e1000_reset_task(struct net_device *netdev) { struct e1000_adapter *adapter = netdev_priv(netdev); - e1000_down(adapter); - e1000_up(adapter); + e1000_reinit_locked(adapter); } /** @@ -3026,10 +3048,8 @@ e1000_change_mtu(struct net_device *netdev, int new_mtu) netdev->mtu = new_mtu; - if (netif_running(netdev)) { - e1000_down(adapter); - e1000_up(adapter); - } + if (netif_running(netdev)) + e1000_reinit_locked(adapter); adapter->hw.max_frame_size = max_frame; @@ -4180,10 +4200,9 @@ e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) return retval; } } - if (netif_running(adapter->netdev)) { - e1000_down(adapter); - e1000_up(adapter); - } else + if (netif_running(adapter->netdev)) + e1000_reinit_locked(adapter); + else e1000_reset(adapter); break; case M88E1000_PHY_SPEC_CTRL: @@ -4200,10 +4219,9 @@ e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) case PHY_CTRL: if (mii_reg & MII_CR_POWER_DOWN) break; - if (netif_running(adapter->netdev)) { - e1000_down(adapter); - e1000_up(adapter); - } else + if (netif_running(adapter->netdev)) + e1000_reinit_locked(adapter); + else e1000_reset(adapter); break; } @@ -4462,8 +4480,10 @@ e1000_suspend(struct pci_dev *pdev, pm_message_t state) netif_device_detach(netdev); - if (netif_running(netdev)) + if (netif_running(netdev)) { + WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); e1000_down(adapter); + } #ifdef CONFIG_PM /* Implement our own version of pci_save_state(pdev) because pci-