X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fnet%2Fe1000%2Fe1000_main.c;h=a373ccb308d8d3281298bee38c1a5dcbfcc8ca7f;hb=282f33c98618a3877043ec9dd5ac777c5e7c117d;hp=258c7d53930eea004c211a319e0eaf83a2cb9779;hpb=cbc696a5fa3942aa2e6ad52a71d5126ffa84d031;p=linux-2.6 diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 258c7d5393..a373ccb308 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, "); @@ -2392,7 +2403,7 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); mss = skb_shinfo(skb)->tso_size; - if (skb->protocol == ntohs(ETH_P_IP)) { + if (skb->protocol == htons(ETH_P_IP)) { skb->nh.iph->tot_len = 0; skb->nh.iph->check = 0; skb->h.th->check = @@ -2871,7 +2882,7 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) /* Old method was to assume IPv4 packet by default if TSO was enabled. * 82571 hardware supports TSO capabilities for IPv6 as well... * no longer assume, we must. */ - if (likely(skb->protocol == ntohs(ETH_P_IP))) + if (likely(skb->protocol == htons(ETH_P_IP))) tx_flags |= E1000_TX_FLAGS_IPV4; e1000_tx_queue(adapter, tx_ring, tx_flags, @@ -3034,11 +3045,21 @@ void e1000_update_stats(struct e1000_adapter *adapter) { struct e1000_hw *hw = &adapter->hw; + struct pci_dev *pdev = adapter->pdev; unsigned long flags; uint16_t phy_tmp; #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF + /* + * Prevent stats update while adapter is being reset, or if the pci + * connection is down. + */ + if (adapter->link_speed == 0) + return; + if (pdev->error_state && pdev->error_state != pci_channel_io_normal) + return; + spin_lock_irqsave(&adapter->stats_lock, flags); /* these counters are modified from e1000_adjust_tbi_stats, @@ -3494,7 +3515,7 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter, buffer_info = &rx_ring->buffer_info[i]; while (rx_desc->status & E1000_RXD_STAT_DD) { - struct sk_buff *skb, *next_skb; + struct sk_buff *skb; u8 status; #ifdef CONFIG_E1000_NAPI if (*work_done >= work_to_do) @@ -3512,8 +3533,6 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter, prefetch(next_rxd); next_buffer = &rx_ring->buffer_info[i]; - next_skb = next_buffer->skb; - prefetch(next_skb->data - NET_IP_ALIGN); cleaned = TRUE; cleaned_count++; @@ -3644,7 +3663,7 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, struct e1000_buffer *buffer_info, *next_buffer; struct e1000_ps_page *ps_page; struct e1000_ps_page_dma *ps_page_dma; - struct sk_buff *skb, *next_skb; + struct sk_buff *skb; unsigned int i, j; uint32_t length, staterr; int cleaned_count = 0; @@ -3674,8 +3693,6 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, prefetch(next_rxd); next_buffer = &rx_ring->buffer_info[i]; - next_skb = next_buffer->skb; - prefetch(next_skb->data - NET_IP_ALIGN); cleaned = TRUE; cleaned_count++; @@ -4594,4 +4611,101 @@ 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 */