diff options
Diffstat (limited to 'drivers/net/ethernet/intel/igb/igb_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 152 |
1 files changed, 128 insertions, 24 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 89d576ce577..e91d73c8aa4 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -1,7 +1,7 @@ /******************************************************************************* Intel(R) Gigabit Ethernet Linux driver - Copyright(c) 2007-2011 Intel Corporation. + Copyright(c) 2007-2012 Intel Corporation. This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, @@ -53,6 +53,7 @@ #include <linux/if_ether.h> #include <linux/aer.h> #include <linux/prefetch.h> +#include <linux/pm_runtime.h> #ifdef CONFIG_IGB_DCA #include <linux/dca.h> #endif @@ -67,7 +68,7 @@ char igb_driver_name[] = "igb"; char igb_driver_version[] = DRV_VERSION; static const char igb_driver_string[] = "Intel(R) Gigabit Ethernet Network Driver"; -static const char igb_copyright[] = "Copyright (c) 2007-2011 Intel Corporation."; +static const char igb_copyright[] = "Copyright (c) 2007-2012 Intel Corporation."; static const struct e1000_info *igb_info_tbl[] = { [board_82575] = &e1000_82575_info, @@ -172,8 +173,18 @@ static int igb_check_vf_assignment(struct igb_adapter *adapter); #endif #ifdef CONFIG_PM -static int igb_suspend(struct pci_dev *, pm_message_t); -static int igb_resume(struct pci_dev *); +static int igb_suspend(struct device *); +static int igb_resume(struct device *); +#ifdef CONFIG_PM_RUNTIME +static int igb_runtime_suspend(struct device *dev); +static int igb_runtime_resume(struct device *dev); +static int igb_runtime_idle(struct device *dev); +#endif +static const struct dev_pm_ops igb_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(igb_suspend, igb_resume) + SET_RUNTIME_PM_OPS(igb_runtime_suspend, igb_runtime_resume, + igb_runtime_idle) +}; #endif static void igb_shutdown(struct pci_dev *); #ifdef CONFIG_IGB_DCA @@ -214,9 +225,7 @@ static struct pci_driver igb_driver = { .probe = igb_probe, .remove = __devexit_p(igb_remove), #ifdef CONFIG_PM - /* Power Management Hooks */ - .suspend = igb_suspend, - .resume = igb_resume, + .driver.pm = &igb_pm_ops, #endif .shutdown = igb_shutdown, .err_handler = &igb_err_handler @@ -1498,6 +1507,7 @@ void igb_power_up_link(struct igb_adapter *adapter) igb_power_up_phy_copper(&adapter->hw); else igb_power_up_serdes_link_82575(&adapter->hw); + igb_reset_phy(&adapter->hw); } /** @@ -2111,6 +2121,8 @@ static int __devinit igb_probe(struct pci_dev *pdev, default: break; } + + pm_runtime_put_noidle(&pdev->dev); return 0; err_register: @@ -2150,6 +2162,8 @@ static void __devexit igb_remove(struct pci_dev *pdev) struct igb_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; + pm_runtime_get_noresume(&pdev->dev); + /* * The watchdog timer may be rescheduled, so explicitly * disable watchdog from being rescheduled. @@ -2472,16 +2486,22 @@ static int __devinit igb_sw_init(struct igb_adapter *adapter) * handler is registered with the OS, the watchdog timer is started, * and the stack is notified that the interface is ready. **/ -static int igb_open(struct net_device *netdev) +static int __igb_open(struct net_device *netdev, bool resuming) { struct igb_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; + struct pci_dev *pdev = adapter->pdev; int err; int i; /* disallow open during test */ - if (test_bit(__IGB_TESTING, &adapter->state)) + if (test_bit(__IGB_TESTING, &adapter->state)) { + WARN_ON(resuming); return -EBUSY; + } + + if (!resuming) + pm_runtime_get_sync(&pdev->dev); netif_carrier_off(netdev); @@ -2527,6 +2547,9 @@ static int igb_open(struct net_device *netdev) netif_tx_start_all_queues(netdev); + if (!resuming) + pm_runtime_put(&pdev->dev); + /* start the watchdog. */ hw->mac.get_link_status = 1; schedule_work(&adapter->watchdog_task); @@ -2541,10 +2564,17 @@ err_setup_rx: igb_free_all_tx_resources(adapter); err_setup_tx: igb_reset(adapter); + if (!resuming) + pm_runtime_put(&pdev->dev); return err; } +static int igb_open(struct net_device *netdev) +{ + return __igb_open(netdev, false); +} + /** * igb_close - Disables a network interface * @netdev: network interface device structure @@ -2556,21 +2586,32 @@ err_setup_tx: * needs to be disabled. A global MAC reset is issued to stop the * hardware, and all transmit and receive resources are freed. **/ -static int igb_close(struct net_device *netdev) +static int __igb_close(struct net_device *netdev, bool suspending) { struct igb_adapter *adapter = netdev_priv(netdev); + struct pci_dev *pdev = adapter->pdev; WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); - igb_down(adapter); + if (!suspending) + pm_runtime_get_sync(&pdev->dev); + + igb_down(adapter); igb_free_irq(adapter); igb_free_all_tx_resources(adapter); igb_free_all_rx_resources(adapter); + if (!suspending) + pm_runtime_put_sync(&pdev->dev); return 0; } +static int igb_close(struct net_device *netdev) +{ + return __igb_close(netdev, false); +} + /** * igb_setup_tx_resources - allocate Tx resources (Descriptors) * @tx_ring: tx descriptor ring (for a specific queue) to setup @@ -3201,6 +3242,7 @@ static void igb_clean_tx_ring(struct igb_ring *tx_ring) buffer_info = &tx_ring->tx_buffer_info[i]; igb_unmap_and_free_tx_resource(tx_ring, buffer_info); } + netdev_tx_reset_queue(txring_txq(tx_ring)); size = sizeof(struct igb_tx_buffer) * tx_ring->count; memset(tx_ring->tx_buffer_info, 0, size); @@ -3630,6 +3672,9 @@ static void igb_watchdog_task(struct work_struct *work) link = igb_has_link(adapter); if (link) { + /* Cancel scheduled suspend requests. */ + pm_runtime_resume(netdev->dev.parent); + if (!netif_carrier_ok(netdev)) { u32 ctrl; hw->mac.ops.get_speed_and_duplex(hw, @@ -3701,6 +3746,9 @@ static void igb_watchdog_task(struct work_struct *work) if (!test_bit(__IGB_DOWN, &adapter->state)) mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); + + pm_schedule_suspend(netdev->dev.parent, + MSEC_PER_SEC * 5); } } @@ -3955,8 +4003,8 @@ set_itr_now: } } -void igb_tx_ctxtdesc(struct igb_ring *tx_ring, u32 vlan_macip_lens, - u32 type_tucmd, u32 mss_l4len_idx) +static void igb_tx_ctxtdesc(struct igb_ring *tx_ring, u32 vlan_macip_lens, + u32 type_tucmd, u32 mss_l4len_idx) { struct e1000_adv_tx_context_desc *context_desc; u16 i = tx_ring->next_to_use; @@ -4238,6 +4286,8 @@ static void igb_tx_map(struct igb_ring *tx_ring, frag++; } + netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); + /* write last descriptor with RS and EOP bits */ cmd_type |= cpu_to_le32(size) | cpu_to_le32(IGB_TXD_DCMD); tx_desc->read.cmd_type_len = cmd_type; @@ -5573,7 +5623,7 @@ static irqreturn_t igb_intr(int irq, void *data) return IRQ_HANDLED; } -void igb_ring_irq_enable(struct igb_q_vector *q_vector) +static void igb_ring_irq_enable(struct igb_q_vector *q_vector) { struct igb_adapter *adapter = q_vector->adapter; struct e1000_hw *hw = &adapter->hw; @@ -5777,6 +5827,8 @@ static bool igb_clean_tx_irq(struct igb_q_vector *q_vector) } } + netdev_tx_completed_queue(txring_txq(tx_ring), + total_packets, total_bytes); i += tx_ring->count; tx_ring->next_to_clean = i; u64_stats_update_begin(&tx_ring->tx_syncp); @@ -6583,13 +6635,14 @@ err_inval: return -EINVAL; } -static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake) +static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake, + bool runtime) { struct net_device *netdev = pci_get_drvdata(pdev); struct igb_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; u32 ctrl, rctl, status; - u32 wufc = adapter->wol; + u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; #ifdef CONFIG_PM int retval = 0; #endif @@ -6597,7 +6650,7 @@ static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake) netif_device_detach(netdev); if (netif_running(netdev)) - igb_close(netdev); + __igb_close(netdev, true); igb_clear_interrupt_scheme(adapter); @@ -6656,12 +6709,13 @@ static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake) } #ifdef CONFIG_PM -static int igb_suspend(struct pci_dev *pdev, pm_message_t state) +static int igb_suspend(struct device *dev) { int retval; bool wake; + struct pci_dev *pdev = to_pci_dev(dev); - retval = __igb_shutdown(pdev, &wake); + retval = __igb_shutdown(pdev, &wake, 0); if (retval) return retval; @@ -6675,8 +6729,9 @@ static int igb_suspend(struct pci_dev *pdev, pm_message_t state) return 0; } -static int igb_resume(struct pci_dev *pdev) +static int igb_resume(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct net_device *netdev = pci_get_drvdata(pdev); struct igb_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; @@ -6697,7 +6752,18 @@ static int igb_resume(struct pci_dev *pdev) pci_enable_wake(pdev, PCI_D3hot, 0); pci_enable_wake(pdev, PCI_D3cold, 0); - if (igb_init_interrupt_scheme(adapter)) { + if (!rtnl_is_locked()) { + /* + * shut up ASSERT_RTNL() warning in + * netif_set_real_num_tx/rx_queues. + */ + rtnl_lock(); + err = igb_init_interrupt_scheme(adapter); + rtnl_unlock(); + } else { + err = igb_init_interrupt_scheme(adapter); + } + if (err) { dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); return -ENOMEM; } @@ -6710,23 +6776,61 @@ static int igb_resume(struct pci_dev *pdev) wr32(E1000_WUS, ~0); - if (netif_running(netdev)) { - err = igb_open(netdev); + if (netdev->flags & IFF_UP) { + err = __igb_open(netdev, true); if (err) return err; } netif_device_attach(netdev); + return 0; +} + +#ifdef CONFIG_PM_RUNTIME +static int igb_runtime_idle(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct net_device *netdev = pci_get_drvdata(pdev); + struct igb_adapter *adapter = netdev_priv(netdev); + + if (!igb_has_link(adapter)) + pm_schedule_suspend(dev, MSEC_PER_SEC * 5); + + return -EBUSY; +} + +static int igb_runtime_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + int retval; + bool wake; + + retval = __igb_shutdown(pdev, &wake, 1); + if (retval) + return retval; + + if (wake) { + pci_prepare_to_sleep(pdev); + } else { + pci_wake_from_d3(pdev, false); + pci_set_power_state(pdev, PCI_D3hot); + } return 0; } + +static int igb_runtime_resume(struct device *dev) +{ + return igb_resume(dev); +} +#endif /* CONFIG_PM_RUNTIME */ #endif static void igb_shutdown(struct pci_dev *pdev) { bool wake; - __igb_shutdown(pdev, &wake); + __igb_shutdown(pdev, &wake, 0); if (system_state == SYSTEM_POWER_OFF) { pci_wake_from_d3(pdev, wake); |