+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*******************************************************************************
-
- Intel(R) Gigabit Ethernet Linux driver
- Copyright(c) 2007-2013 Intel Corporation.
-
- Contact Information:
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
-*******************************************************************************/
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/vmalloc.h>
-#include <linux/pagemap.h>
-#include <linux/netdevice.h>
-#include <linux/tcp.h>
-#ifdef NETIF_F_TSO
-#include <net/checksum.h>
-#ifdef NETIF_F_TSO6
-#include <linux/ipv6.h>
-#include <net/ip6_checksum.h>
-#endif
-#endif
-#ifdef SIOCGMIIPHY
-#include <linux/mii.h>
-#endif
-#ifdef SIOCETHTOOL
-#include <linux/ethtool.h>
-#endif
-#include <linux/if_vlan.h>
-#ifdef CONFIG_PM_RUNTIME
-#include <linux/pm_runtime.h>
-#endif /* CONFIG_PM_RUNTIME */
-
-#include <linux/if_bridge.h>
-#include "igb.h"
-#include "igb_vmdq.h"
-
-#include <linux/uio_driver.h>
-
-#if defined(DEBUG) || defined (DEBUG_DUMP) || defined (DEBUG_ICR) || defined(DEBUG_ITR)
-#define DRV_DEBUG "_debug"
-#else
-#define DRV_DEBUG
-#endif
-#define DRV_HW_PERF
-#define VERSION_SUFFIX
-
-#define MAJ 5
-#define MIN 0
-#define BUILD 6
-#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." __stringify(BUILD) VERSION_SUFFIX DRV_DEBUG DRV_HW_PERF
-
-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) 2007-2013 Intel Corporation.";
-
-const struct pci_device_id igb_pci_tbl[] = {
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_BACKPLANE_1GBPS) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_SGMII) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_BACKPLANE_2_5GBPS) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_COPPER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_FIBER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SERDES) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SGMII) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_COPPER_FLASHLESS) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SERDES_FLASHLESS) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I211_COPPER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_COPPER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_FIBER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SERDES) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SGMII) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_FIBER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_QUAD_FIBER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SERDES) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SGMII) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER_DUAL) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SGMII) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SERDES) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_BACKPLANE) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SFP) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS_SERDES) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES_QUAD) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER_ET2) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES) },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER) },
- /* required last entry */
- {0, }
-};
-
-//MODULE_DEVICE_TABLE(pci, igb_pci_tbl);
-static void igb_set_sriov_capability(struct igb_adapter *adapter) __attribute__((__unused__));
-void igb_reset(struct igb_adapter *);
-static int igb_setup_all_tx_resources(struct igb_adapter *);
-static int igb_setup_all_rx_resources(struct igb_adapter *);
-static void igb_free_all_tx_resources(struct igb_adapter *);
-static void igb_free_all_rx_resources(struct igb_adapter *);
-static void igb_setup_mrqc(struct igb_adapter *);
-void igb_update_stats(struct igb_adapter *);
-static int igb_probe(struct pci_dev *, const struct pci_device_id *);
-static void __devexit igb_remove(struct pci_dev *pdev);
-static int igb_sw_init(struct igb_adapter *);
-static int igb_open(struct net_device *);
-static int igb_close(struct net_device *);
-static void igb_configure(struct igb_adapter *);
-static void igb_configure_tx(struct igb_adapter *);
-static void igb_configure_rx(struct igb_adapter *);
-static void igb_clean_all_tx_rings(struct igb_adapter *);
-static void igb_clean_all_rx_rings(struct igb_adapter *);
-static void igb_clean_tx_ring(struct igb_ring *);
-static void igb_set_rx_mode(struct net_device *);
-#ifdef HAVE_TIMER_SETUP
-static void igb_update_phy_info(struct timer_list *);
-static void igb_watchdog(struct timer_list *);
-#else
-static void igb_update_phy_info(unsigned long);
-static void igb_watchdog(unsigned long);
-#endif
-static void igb_watchdog_task(struct work_struct *);
-static void igb_dma_err_task(struct work_struct *);
-#ifdef HAVE_TIMER_SETUP
-static void igb_dma_err_timer(struct timer_list *);
-#else
-static void igb_dma_err_timer(unsigned long data);
-#endif
-static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, struct net_device *);
-static struct net_device_stats *igb_get_stats(struct net_device *);
-static int igb_change_mtu(struct net_device *, int);
-void igb_full_sync_mac_table(struct igb_adapter *adapter);
-static int igb_set_mac(struct net_device *, void *);
-static void igb_set_uta(struct igb_adapter *adapter);
-static irqreturn_t igb_intr(int irq, void *);
-static irqreturn_t igb_intr_msi(int irq, void *);
-static irqreturn_t igb_msix_other(int irq, void *);
-static irqreturn_t igb_msix_ring(int irq, void *);
-#ifdef IGB_DCA
-static void igb_update_dca(struct igb_q_vector *);
-static void igb_setup_dca(struct igb_adapter *);
-#endif /* IGB_DCA */
-static int igb_poll(struct napi_struct *, int);
-static bool igb_clean_tx_irq(struct igb_q_vector *);
-static bool igb_clean_rx_irq(struct igb_q_vector *, int);
-static int igb_ioctl(struct net_device *, struct ifreq *, int cmd);
-static void igb_tx_timeout(struct net_device *);
-static void igb_reset_task(struct work_struct *);
-#ifdef HAVE_VLAN_RX_REGISTER
-static void igb_vlan_mode(struct net_device *, struct vlan_group *);
-#endif
-#ifdef HAVE_VLAN_PROTOCOL
-static int igb_vlan_rx_add_vid(struct net_device *,
- __be16 proto, u16);
-static int igb_vlan_rx_kill_vid(struct net_device *,
- __be16 proto, u16);
-#elif defined HAVE_INT_NDO_VLAN_RX_ADD_VID
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
-static int igb_vlan_rx_add_vid(struct net_device *,
- __always_unused __be16 proto, u16);
-static int igb_vlan_rx_kill_vid(struct net_device *,
- __always_unused __be16 proto, u16);
-#else
-static int igb_vlan_rx_add_vid(struct net_device *, u16);
-static int igb_vlan_rx_kill_vid(struct net_device *, u16);
-#endif
-#else
-static void igb_vlan_rx_add_vid(struct net_device *, u16);
-static void igb_vlan_rx_kill_vid(struct net_device *, u16);
-#endif
-static void igb_restore_vlan(struct igb_adapter *);
-void igb_rar_set(struct igb_adapter *adapter, u32 index);
-static void igb_ping_all_vfs(struct igb_adapter *);
-static void igb_msg_task(struct igb_adapter *);
-static void igb_vmm_control(struct igb_adapter *);
-static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *);
-static void igb_restore_vf_multicasts(struct igb_adapter *adapter);
-static void igb_process_mdd_event(struct igb_adapter *);
-#ifdef IFLA_VF_MAX
-static int igb_ndo_set_vf_mac( struct net_device *netdev, int vf, u8 *mac);
-static int igb_ndo_set_vf_vlan(struct net_device *netdev,
-#ifdef HAVE_VF_VLAN_PROTO
- int vf, u16 vlan, u8 qos, __be16 vlan_proto);
-#else
- int vf, u16 vlan, u8 qos);
-#endif
-#ifdef HAVE_VF_SPOOFCHK_CONFIGURE
-static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf,
- bool setting);
-#endif
-#ifdef HAVE_VF_MIN_MAX_TXRATE
-static int igb_ndo_set_vf_bw(struct net_device *, int, int, int);
-#else /* HAVE_VF_MIN_MAX_TXRATE */
-static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate);
-#endif /* HAVE_VF_MIN_MAX_TXRATE */
-static int igb_ndo_get_vf_config(struct net_device *netdev, int vf,
- struct ifla_vf_info *ivi);
-static void igb_check_vf_rate_limit(struct igb_adapter *);
-#endif
-static int igb_vf_configure(struct igb_adapter *adapter, int vf);
-#ifdef CONFIG_PM
-#ifdef HAVE_SYSTEM_SLEEP_PM_OPS
-static int igb_suspend(struct device *dev);
-static int igb_resume(struct device *dev);
-#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 /* CONFIG_PM_RUNTIME */
-static const struct dev_pm_ops igb_pm_ops = {
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,34)
- .suspend = igb_suspend,
- .resume = igb_resume,
- .freeze = igb_suspend,
- .thaw = igb_resume,
- .poweroff = igb_suspend,
- .restore = igb_resume,
-#ifdef CONFIG_PM_RUNTIME
- .runtime_suspend = igb_runtime_suspend,
- .runtime_resume = igb_runtime_resume,
- .runtime_idle = igb_runtime_idle,
-#endif
-#else /* Linux >= 2.6.34 */
- SET_SYSTEM_SLEEP_PM_OPS(igb_suspend, igb_resume)
-#ifdef CONFIG_PM_RUNTIME
- SET_RUNTIME_PM_OPS(igb_runtime_suspend, igb_runtime_resume,
- igb_runtime_idle)
-#endif /* CONFIG_PM_RUNTIME */
-#endif /* Linux version */
-};
-#else
-static int igb_suspend(struct pci_dev *pdev, pm_message_t state);
-static int igb_resume(struct pci_dev *pdev);
-#endif /* HAVE_SYSTEM_SLEEP_PM_OPS */
-#endif /* CONFIG_PM */
-#ifndef USE_REBOOT_NOTIFIER
-static void igb_shutdown(struct pci_dev *);
-#else
-static int igb_notify_reboot(struct notifier_block *, unsigned long, void *);
-static struct notifier_block igb_notifier_reboot = {
- .notifier_call = igb_notify_reboot,
- .next = NULL,
- .priority = 0
-};
-#endif
-#ifdef IGB_DCA
-static int igb_notify_dca(struct notifier_block *, unsigned long, void *);
-static struct notifier_block dca_notifier = {
- .notifier_call = igb_notify_dca,
- .next = NULL,
- .priority = 0
-};
-#endif
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/* for netdump / net console */
-static void igb_netpoll(struct net_device *);
-#endif
-
-#ifdef HAVE_PCI_ERS
-static pci_ers_result_t igb_io_error_detected(struct pci_dev *,
- pci_channel_state_t);
-static pci_ers_result_t igb_io_slot_reset(struct pci_dev *);
-static void igb_io_resume(struct pci_dev *);
-
-static struct pci_error_handlers igb_err_handler = {
- .error_detected = igb_io_error_detected,
- .slot_reset = igb_io_slot_reset,
- .resume = igb_io_resume,
-};
-#endif
-
-static void igb_init_fw(struct igb_adapter *adapter);
-static void igb_init_dmac(struct igb_adapter *adapter, u32 pba);
-
-static struct pci_driver igb_driver = {
- .name = igb_driver_name,
- .id_table = igb_pci_tbl,
- .probe = igb_probe,
- .remove = __devexit_p(igb_remove),
-#ifdef CONFIG_PM
-#ifdef HAVE_SYSTEM_SLEEP_PM_OPS
- .driver.pm = &igb_pm_ops,
-#else
- .suspend = igb_suspend,
- .resume = igb_resume,
-#endif /* HAVE_SYSTEM_SLEEP_PM_OPS */
-#endif /* CONFIG_PM */
-#ifndef USE_REBOOT_NOTIFIER
- .shutdown = igb_shutdown,
-#endif
-#ifdef HAVE_PCI_ERS
- .err_handler = &igb_err_handler
-#endif
-};
-
-//MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
-//MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
-//MODULE_LICENSE("GPL");
-//MODULE_VERSION(DRV_VERSION);
-
-static void igb_vfta_set(struct igb_adapter *adapter, u32 vid, bool add)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_host_mng_dhcp_cookie *mng_cookie = &hw->mng_cookie;
- u32 index = (vid >> E1000_VFTA_ENTRY_SHIFT) & E1000_VFTA_ENTRY_MASK;
- u32 mask = 1 << (vid & E1000_VFTA_ENTRY_BIT_SHIFT_MASK);
- u32 vfta;
-
- /*
- * if this is the management vlan the only option is to add it in so
- * that the management pass through will continue to work
- */
- if ((mng_cookie->status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
- (vid == mng_cookie->vlan_id))
- add = TRUE;
-
- vfta = adapter->shadow_vfta[index];
-
- if (add)
- vfta |= mask;
- else
- vfta &= ~mask;
-
- e1000_write_vfta(hw, index, vfta);
- adapter->shadow_vfta[index] = vfta;
-}
-
-static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
-//module_param(debug, int, 0);
-//MODULE_PARM_DESC(debug, "Debug level (0=none, ..., 16=all)");
-
-/**
- * igb_init_module - Driver Registration Routine
- *
- * igb_init_module is the first routine called when the driver is
- * loaded. All it does is register with the PCI subsystem.
- **/
-static int __init igb_init_module(void)
-{
- int ret;
-
- printk(KERN_INFO "%s - version %s\n",
- igb_driver_string, igb_driver_version);
-
- printk(KERN_INFO "%s\n", igb_copyright);
-#ifdef IGB_HWMON
-/* only use IGB_PROCFS if IGB_HWMON is not defined */
-#else
-#ifdef IGB_PROCFS
- if (igb_procfs_topdir_init())
- printk(KERN_INFO "Procfs failed to initialize topdir\n");
-#endif /* IGB_PROCFS */
-#endif /* IGB_HWMON */
-
-#ifdef IGB_DCA
- dca_register_notify(&dca_notifier);
-#endif
- ret = pci_register_driver(&igb_driver);
-#ifdef USE_REBOOT_NOTIFIER
- if (ret >= 0) {
- register_reboot_notifier(&igb_notifier_reboot);
- }
-#endif
- return ret;
-}
-
-#undef module_init
-#define module_init(x) static int x(void) __attribute__((__unused__));
-module_init(igb_init_module);
-
-/**
- * igb_exit_module - Driver Exit Cleanup Routine
- *
- * igb_exit_module is called just before the driver is removed
- * from memory.
- **/
-static void __exit igb_exit_module(void)
-{
-#ifdef IGB_DCA
- dca_unregister_notify(&dca_notifier);
-#endif
-#ifdef USE_REBOOT_NOTIFIER
- unregister_reboot_notifier(&igb_notifier_reboot);
-#endif
- pci_unregister_driver(&igb_driver);
-
-#ifdef IGB_HWMON
-/* only compile IGB_PROCFS if IGB_HWMON is not defined */
-#else
-#ifdef IGB_PROCFS
- igb_procfs_topdir_exit();
-#endif /* IGB_PROCFS */
-#endif /* IGB_HWMON */
-}
-
-#undef module_exit
-#define module_exit(x) static void x(void) __attribute__((__unused__));
-module_exit(igb_exit_module);
-
-#define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1))
-/**
- * igb_cache_ring_register - Descriptor ring to register mapping
- * @adapter: board private structure to initialize
- *
- * Once we know the feature-set enabled for the device, we'll cache
- * the register offset the descriptor ring is assigned to.
- **/
-static void igb_cache_ring_register(struct igb_adapter *adapter)
-{
- int i = 0, j = 0;
- u32 rbase_offset = adapter->vfs_allocated_count;
-
- switch (adapter->hw.mac.type) {
- case e1000_82576:
- /* The queues are allocated for virtualization such that VF 0
- * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc.
- * In order to avoid collision we start at the first free queue
- * and continue consuming queues in the same sequence
- */
- if ((adapter->rss_queues > 1) && adapter->vmdq_pools) {
- for (; i < adapter->rss_queues; i++)
- adapter->rx_ring[i]->reg_idx = rbase_offset +
- Q_IDX_82576(i);
- }
- case e1000_82575:
- case e1000_82580:
- case e1000_i350:
- case e1000_i354:
- case e1000_i210:
- case e1000_i211:
- default:
- for (; i < adapter->num_rx_queues; i++)
- adapter->rx_ring[i]->reg_idx = rbase_offset + i;
- for (; j < adapter->num_tx_queues; j++)
- adapter->tx_ring[j]->reg_idx = rbase_offset + j;
- break;
- }
-}
-
-static void igb_configure_lli(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 port;
-
- /* LLI should only be enabled for MSI-X or MSI interrupts */
- if (!adapter->msix_entries && !(adapter->flags & IGB_FLAG_HAS_MSI))
- return;
-
- if (adapter->lli_port) {
- /* use filter 0 for port */
- port = htons((u16)adapter->lli_port);
- E1000_WRITE_REG(hw, E1000_IMIR(0),
- (port | E1000_IMIR_PORT_IM_EN));
- E1000_WRITE_REG(hw, E1000_IMIREXT(0),
- (E1000_IMIREXT_SIZE_BP | E1000_IMIREXT_CTRL_BP));
- }
-
- if (adapter->flags & IGB_FLAG_LLI_PUSH) {
- /* use filter 1 for push flag */
- E1000_WRITE_REG(hw, E1000_IMIR(1),
- (E1000_IMIR_PORT_BP | E1000_IMIR_PORT_IM_EN));
- E1000_WRITE_REG(hw, E1000_IMIREXT(1),
- (E1000_IMIREXT_SIZE_BP | E1000_IMIREXT_CTRL_PSH));
- }
-
- if (adapter->lli_size) {
- /* use filter 2 for size */
- E1000_WRITE_REG(hw, E1000_IMIR(2),
- (E1000_IMIR_PORT_BP | E1000_IMIR_PORT_IM_EN));
- E1000_WRITE_REG(hw, E1000_IMIREXT(2),
- (adapter->lli_size | E1000_IMIREXT_CTRL_BP));
- }
-
-}
-
-/**
- * igb_write_ivar - configure ivar for given MSI-X vector
- * @hw: pointer to the HW structure
- * @msix_vector: vector number we are allocating to a given ring
- * @index: row index of IVAR register to write within IVAR table
- * @offset: column offset of in IVAR, should be multiple of 8
- *
- * This function is intended to handle the writing of the IVAR register
- * for adapters 82576 and newer. The IVAR table consists of 2 columns,
- * each containing an cause allocation for an Rx and Tx ring, and a
- * variable number of rows depending on the number of queues supported.
- **/
-static void igb_write_ivar(struct e1000_hw *hw, int msix_vector,
- int index, int offset)
-{
- u32 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
-
- /* clear any bits that are currently set */
- ivar &= ~((u32)0xFF << offset);
-
- /* write vector and valid bit */
- ivar |= (msix_vector | E1000_IVAR_VALID) << offset;
-
- E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
-}
-
-#define IGB_N0_QUEUE -1
-static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector)
-{
- struct igb_adapter *adapter = q_vector->adapter;
- struct e1000_hw *hw = &adapter->hw;
- int rx_queue = IGB_N0_QUEUE;
- int tx_queue = IGB_N0_QUEUE;
- u32 msixbm = 0;
-
- if (q_vector->rx.ring)
- rx_queue = q_vector->rx.ring->reg_idx;
- if (q_vector->tx.ring)
- tx_queue = q_vector->tx.ring->reg_idx;
-
- switch (hw->mac.type) {
- case e1000_82575:
- /* The 82575 assigns vectors using a bitmask, which matches the
- bitmask for the EICR/EIMS/EIMC registers. To assign one
- or more queues to a vector, we write the appropriate bits
- into the MSIXBM register for that vector. */
- if (rx_queue > IGB_N0_QUEUE)
- msixbm = E1000_EICR_RX_QUEUE0 << rx_queue;
- if (tx_queue > IGB_N0_QUEUE)
- msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue;
- if (!adapter->msix_entries && msix_vector == 0)
- msixbm |= E1000_EIMS_OTHER;
- E1000_WRITE_REG_ARRAY(hw, E1000_MSIXBM(0), msix_vector, msixbm);
- q_vector->eims_value = msixbm;
- break;
- case e1000_82576:
- /*
- * 82576 uses a table that essentially consists of 2 columns
- * with 8 rows. The ordering is column-major so we use the
- * lower 3 bits as the row index, and the 4th bit as the
- * column offset.
- */
- if (rx_queue > IGB_N0_QUEUE)
- igb_write_ivar(hw, msix_vector,
- rx_queue & 0x7,
- (rx_queue & 0x8) << 1);
- if (tx_queue > IGB_N0_QUEUE)
- igb_write_ivar(hw, msix_vector,
- tx_queue & 0x7,
- ((tx_queue & 0x8) << 1) + 8);
- q_vector->eims_value = 1 << msix_vector;
- break;
- case e1000_82580:
- case e1000_i350:
- case e1000_i354:
- case e1000_i210:
- case e1000_i211:
- /*
- * On 82580 and newer adapters the scheme is similar to 82576
- * however instead of ordering column-major we have things
- * ordered row-major. So we traverse the table by using
- * bit 0 as the column offset, and the remaining bits as the
- * row index.
- */
- if (rx_queue > IGB_N0_QUEUE)
- igb_write_ivar(hw, msix_vector,
- rx_queue >> 1,
- (rx_queue & 0x1) << 4);
- if (tx_queue > IGB_N0_QUEUE)
- igb_write_ivar(hw, msix_vector,
- tx_queue >> 1,
- ((tx_queue & 0x1) << 4) + 8);
- q_vector->eims_value = 1 << msix_vector;
- break;
- default:
- BUG();
- break;
- }
-
- /* add q_vector eims value to global eims_enable_mask */
- adapter->eims_enable_mask |= q_vector->eims_value;
-
- /* configure q_vector to set itr on first interrupt */
- q_vector->set_itr = 1;
-}
-
-/**
- * igb_configure_msix - Configure MSI-X hardware
- *
- * igb_configure_msix sets up the hardware to properly
- * generate MSI-X interrupts.
- **/
-static void igb_configure_msix(struct igb_adapter *adapter)
-{
- u32 tmp;
- int i, vector = 0;
- struct e1000_hw *hw = &adapter->hw;
-
- adapter->eims_enable_mask = 0;
-
- /* set vector for other causes, i.e. link changes */
- switch (hw->mac.type) {
- case e1000_82575:
- tmp = E1000_READ_REG(hw, E1000_CTRL_EXT);
- /* enable MSI-X PBA support*/
- tmp |= E1000_CTRL_EXT_PBA_CLR;
-
- /* Auto-Mask interrupts upon ICR read. */
- tmp |= E1000_CTRL_EXT_EIAME;
- tmp |= E1000_CTRL_EXT_IRCA;
-
- E1000_WRITE_REG(hw, E1000_CTRL_EXT, tmp);
-
- /* enable msix_other interrupt */
- E1000_WRITE_REG_ARRAY(hw, E1000_MSIXBM(0), vector++,
- E1000_EIMS_OTHER);
- adapter->eims_other = E1000_EIMS_OTHER;
-
- break;
-
- case e1000_82576:
- case e1000_82580:
- case e1000_i350:
- case e1000_i354:
- case e1000_i210:
- case e1000_i211:
- /* Turn on MSI-X capability first, or our settings
- * won't stick. And it will take days to debug. */
- E1000_WRITE_REG(hw, E1000_GPIE, E1000_GPIE_MSIX_MODE |
- E1000_GPIE_PBA | E1000_GPIE_EIAME |
- E1000_GPIE_NSICR);
-
- /* enable msix_other interrupt */
- adapter->eims_other = 1 << vector;
- tmp = (vector++ | E1000_IVAR_VALID) << 8;
-
- E1000_WRITE_REG(hw, E1000_IVAR_MISC, tmp);
- break;
- default:
- /* do nothing, since nothing else supports MSI-X */
- break;
- } /* switch (hw->mac.type) */
-
- adapter->eims_enable_mask |= adapter->eims_other;
-
- for (i = 0; i < adapter->num_q_vectors; i++)
- igb_assign_vector(adapter->q_vector[i], vector++);
-
- E1000_WRITE_FLUSH(hw);
-}
-
-/**
- * igb_request_msix - Initialize MSI-X interrupts
- *
- * igb_request_msix allocates MSI-X vectors and requests interrupts from the
- * kernel.
- **/
-static int igb_request_msix(struct igb_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct e1000_hw *hw = &adapter->hw;
- int i, err = 0, vector = 0, free_vector = 0;
-
- err = request_irq(adapter->msix_entries[vector].vector,
- &igb_msix_other, 0, netdev->name, adapter);
- if (err)
- goto err_out;
-
- for (i = 0; i < adapter->num_q_vectors; i++) {
- struct igb_q_vector *q_vector = adapter->q_vector[i];
-
- vector++;
-
- q_vector->itr_register = hw->hw_addr + E1000_EITR(vector);
-
- if (q_vector->rx.ring && q_vector->tx.ring)
- sprintf(q_vector->name, "%s-TxRx-%u", netdev->name,
- q_vector->rx.ring->queue_index);
- else if (q_vector->tx.ring)
- sprintf(q_vector->name, "%s-tx-%u", netdev->name,
- q_vector->tx.ring->queue_index);
- else if (q_vector->rx.ring)
- sprintf(q_vector->name, "%s-rx-%u", netdev->name,
- q_vector->rx.ring->queue_index);
- else
- sprintf(q_vector->name, "%s-unused", netdev->name);
-
- err = request_irq(adapter->msix_entries[vector].vector,
- igb_msix_ring, 0, q_vector->name,
- q_vector);
- if (err)
- goto err_free;
- }
-
- igb_configure_msix(adapter);
- return 0;
-
-err_free:
- /* free already assigned IRQs */
- free_irq(adapter->msix_entries[free_vector++].vector, adapter);
-
- vector--;
- for (i = 0; i < vector; i++) {
- free_irq(adapter->msix_entries[free_vector++].vector,
- adapter->q_vector[i]);
- }
-err_out:
- return err;
-}
-
-static void igb_reset_interrupt_capability(struct igb_adapter *adapter)
-{
- if (adapter->msix_entries) {
- pci_disable_msix(adapter->pdev);
- kfree(adapter->msix_entries);
- adapter->msix_entries = NULL;
- } else if (adapter->flags & IGB_FLAG_HAS_MSI) {
- pci_disable_msi(adapter->pdev);
- }
-}
-
-/**
- * igb_free_q_vector - Free memory allocated for specific interrupt vector
- * @adapter: board private structure to initialize
- * @v_idx: Index of vector to be freed
- *
- * This function frees the memory allocated to the q_vector. In addition if
- * NAPI is enabled it will delete any references to the NAPI struct prior
- * to freeing the q_vector.
- **/
-static void igb_free_q_vector(struct igb_adapter *adapter, int v_idx)
-{
- struct igb_q_vector *q_vector = adapter->q_vector[v_idx];
-
- if (q_vector->tx.ring)
- adapter->tx_ring[q_vector->tx.ring->queue_index] = NULL;
-
- if (q_vector->rx.ring)
- adapter->tx_ring[q_vector->rx.ring->queue_index] = NULL;
-
- adapter->q_vector[v_idx] = NULL;
- netif_napi_del(&q_vector->napi);
-#ifndef IGB_NO_LRO
- __skb_queue_purge(&q_vector->lrolist.active);
-#endif
- kfree(q_vector);
-}
-
-/**
- * igb_free_q_vectors - Free memory allocated for interrupt vectors
- * @adapter: board private structure to initialize
- *
- * This function frees the memory allocated to the q_vectors. In addition if
- * NAPI is enabled it will delete any references to the NAPI struct prior
- * to freeing the q_vector.
- **/
-static void igb_free_q_vectors(struct igb_adapter *adapter)
-{
- int v_idx = adapter->num_q_vectors;
-
- adapter->num_tx_queues = 0;
- adapter->num_rx_queues = 0;
- adapter->num_q_vectors = 0;
-
- while (v_idx--)
- igb_free_q_vector(adapter, v_idx);
-}
-
-/**
- * igb_clear_interrupt_scheme - reset the device to a state of no interrupts
- *
- * This function resets the device so that it has 0 rx queues, tx queues, and
- * MSI-X interrupts allocated.
- */
-static void igb_clear_interrupt_scheme(struct igb_adapter *adapter)
-{
- igb_free_q_vectors(adapter);
- igb_reset_interrupt_capability(adapter);
-}
-
-/**
- * igb_process_mdd_event
- * @adapter - board private structure
- *
- * Identify a malicious VF, disable the VF TX/RX queues and log a message.
- */
-static void igb_process_mdd_event(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 lvmmc, vfte, vfre, mdfb;
- u8 vf_queue;
-
- lvmmc = E1000_READ_REG(hw, E1000_LVMMC);
- vf_queue = lvmmc >> 29;
-
- /* VF index cannot be bigger or equal to VFs allocated */
- if (vf_queue >= adapter->vfs_allocated_count)
- return;
-
- netdev_info(adapter->netdev,
- "VF %d misbehaved. VF queues are disabled. "
- "VM misbehavior code is 0x%x\n", vf_queue, lvmmc);
-
- /* Disable VFTE and VFRE related bits */
- vfte = E1000_READ_REG(hw, E1000_VFTE);
- vfte &= ~(1 << vf_queue);
- E1000_WRITE_REG(hw, E1000_VFTE, vfte);
-
- vfre = E1000_READ_REG(hw, E1000_VFRE);
- vfre &= ~(1 << vf_queue);
- E1000_WRITE_REG(hw, E1000_VFRE, vfre);
-
- /* Disable MDFB related bit. Clear on write */
- mdfb = E1000_READ_REG(hw, E1000_MDFB);
- mdfb |= (1 << vf_queue);
- E1000_WRITE_REG(hw, E1000_MDFB, mdfb);
-
- /* Reset the specific VF */
- E1000_WRITE_REG(hw, E1000_VTCTRL(vf_queue), E1000_VTCTRL_RST);
-}
-
-/**
- * igb_disable_mdd
- * @adapter - board private structure
- *
- * Disable MDD behavior in the HW
- **/
-static void igb_disable_mdd(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 reg;
-
- if ((hw->mac.type != e1000_i350) ||
- (hw->mac.type != e1000_i354))
- return;
-
- reg = E1000_READ_REG(hw, E1000_DTXCTL);
- reg &= (~E1000_DTXCTL_MDP_EN);
- E1000_WRITE_REG(hw, E1000_DTXCTL, reg);
-}
-
-/**
- * igb_enable_mdd
- * @adapter - board private structure
- *
- * Enable the HW to detect malicious driver and sends an interrupt to
- * the driver.
- **/
-static void igb_enable_mdd(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 reg;
-
- /* Only available on i350 device */
- if (hw->mac.type != e1000_i350)
- return;
-
- reg = E1000_READ_REG(hw, E1000_DTXCTL);
- reg |= E1000_DTXCTL_MDP_EN;
- E1000_WRITE_REG(hw, E1000_DTXCTL, reg);
-}
-
-/**
- * igb_reset_sriov_capability - disable SR-IOV if enabled
- *
- * Attempt to disable single root IO virtualization capabilites present in the
- * kernel.
- **/
-static void igb_reset_sriov_capability(struct igb_adapter *adapter)
-{
- struct pci_dev *pdev = adapter->pdev;
- struct e1000_hw *hw = &adapter->hw;
-
- /* reclaim resources allocated to VFs */
- if (adapter->vf_data) {
- if (!pci_vfs_assigned(pdev)) {
- /*
- * disable iov and allow time for transactions to
- * clear
- */
- pci_disable_sriov(pdev);
- msleep(500);
-
- dev_info(pci_dev_to_dev(pdev), "IOV Disabled\n");
- } else {
- dev_info(pci_dev_to_dev(pdev), "IOV Not Disabled\n "
- "VF(s) are assigned to guests!\n");
- }
- /* Disable Malicious Driver Detection */
- igb_disable_mdd(adapter);
-
- /* free vf data storage */
- kfree(adapter->vf_data);
- adapter->vf_data = NULL;
-
- /* switch rings back to PF ownership */
- E1000_WRITE_REG(hw, E1000_IOVCTL,
- E1000_IOVCTL_REUSE_VFQ);
- E1000_WRITE_FLUSH(hw);
- msleep(100);
- }
-
- adapter->vfs_allocated_count = 0;
-}
-
-/**
- * igb_set_sriov_capability - setup SR-IOV if supported
- *
- * Attempt to enable single root IO virtualization capabilites present in the
- * kernel.
- **/
-static void igb_set_sriov_capability(struct igb_adapter *adapter)
-{
- struct pci_dev *pdev = adapter->pdev;
- int old_vfs = 0;
- int i;
-
- old_vfs = pci_num_vf(pdev);
- if (old_vfs) {
- dev_info(pci_dev_to_dev(pdev),
- "%d pre-allocated VFs found - override "
- "max_vfs setting of %d\n", old_vfs,
- adapter->vfs_allocated_count);
- adapter->vfs_allocated_count = old_vfs;
- }
- /* no VFs requested, do nothing */
- if (!adapter->vfs_allocated_count)
- return;
-
- /* allocate vf data storage */
- adapter->vf_data = kcalloc(adapter->vfs_allocated_count,
- sizeof(struct vf_data_storage),
- GFP_KERNEL);
-
- if (adapter->vf_data) {
- if (!old_vfs) {
- if (pci_enable_sriov(pdev,
- adapter->vfs_allocated_count))
- goto err_out;
- }
- for (i = 0; i < adapter->vfs_allocated_count; i++)
- igb_vf_configure(adapter, i);
-
- switch (adapter->hw.mac.type) {
- case e1000_82576:
- case e1000_i350:
- /* Enable VM to VM loopback by default */
- adapter->flags |= IGB_FLAG_LOOPBACK_ENABLE;
- break;
- default:
- /* Currently no other hardware supports loopback */
- break;
- }
-
- /* DMA Coalescing is not supported in IOV mode. */
- if (adapter->hw.mac.type >= e1000_i350)
- adapter->dmac = IGB_DMAC_DISABLE;
- if (adapter->hw.mac.type < e1000_i350)
- adapter->flags |= IGB_FLAG_DETECT_BAD_DMA;
- return;
-
- }
-
-err_out:
- kfree(adapter->vf_data);
- adapter->vf_data = NULL;
- adapter->vfs_allocated_count = 0;
- dev_warn(pci_dev_to_dev(pdev),
- "Failed to initialize SR-IOV virtualization\n");
-}
-
-/**
- * igb_set_interrupt_capability - set MSI or MSI-X if supported
- *
- * Attempt to configure interrupts using the best available
- * capabilities of the hardware and kernel.
- **/
-static void igb_set_interrupt_capability(struct igb_adapter *adapter, bool msix)
-{
- struct pci_dev *pdev = adapter->pdev;
- int err;
- int numvecs, i;
-
- if (!msix)
- adapter->int_mode = IGB_INT_MODE_MSI;
-
- /* Number of supported queues. */
- adapter->num_rx_queues = adapter->rss_queues;
-
- if (adapter->vmdq_pools > 1)
- adapter->num_rx_queues += adapter->vmdq_pools - 1;
-
-#ifdef HAVE_TX_MQ
- if (adapter->vmdq_pools)
- adapter->num_tx_queues = adapter->vmdq_pools;
- else
- adapter->num_tx_queues = adapter->num_rx_queues;
-#else
- adapter->num_tx_queues = max_t(u32, 1, adapter->vmdq_pools);
-#endif
-
- switch (adapter->int_mode) {
- case IGB_INT_MODE_MSIX:
- /* start with one vector for every rx queue */
- numvecs = adapter->num_rx_queues;
-
- /* if tx handler is separate add 1 for every tx queue */
- if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS))
- numvecs += adapter->num_tx_queues;
-
- /* store the number of vectors reserved for queues */
- adapter->num_q_vectors = numvecs;
-
- /* add 1 vector for link status interrupts */
- numvecs++;
- adapter->msix_entries = kcalloc(numvecs,
- sizeof(struct msix_entry),
- GFP_KERNEL);
- if (adapter->msix_entries) {
- for (i = 0; i < numvecs; i++)
- adapter->msix_entries[i].entry = i;
-
-#ifdef HAVE_PCI_ENABLE_MSIX
- err = pci_enable_msix(pdev,
- adapter->msix_entries, numvecs);
-#else
- err = pci_enable_msix_range(pdev,
- adapter->msix_entries,
- numvecs,
- numvecs);
-#endif
- if (err == 0)
- break;
- }
- /* MSI-X failed, so fall through and try MSI */
- dev_warn(pci_dev_to_dev(pdev), "Failed to initialize MSI-X interrupts. "
- "Falling back to MSI interrupts.\n");
- igb_reset_interrupt_capability(adapter);
- case IGB_INT_MODE_MSI:
- if (!pci_enable_msi(pdev))
- adapter->flags |= IGB_FLAG_HAS_MSI;
- else
- dev_warn(pci_dev_to_dev(pdev), "Failed to initialize MSI "
- "interrupts. Falling back to legacy "
- "interrupts.\n");
- /* Fall through */
- case IGB_INT_MODE_LEGACY:
- /* disable advanced features and set number of queues to 1 */
- igb_reset_sriov_capability(adapter);
- adapter->vmdq_pools = 0;
- adapter->rss_queues = 1;
- adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
- adapter->num_rx_queues = 1;
- adapter->num_tx_queues = 1;
- adapter->num_q_vectors = 1;
- /* Don't do anything; this is system default */
- break;
- }
-}
-
-static void igb_add_ring(struct igb_ring *ring,
- struct igb_ring_container *head)
-{
- head->ring = ring;
- head->count++;
-}
-
-/**
- * igb_alloc_q_vector - Allocate memory for a single interrupt vector
- * @adapter: board private structure to initialize
- * @v_count: q_vectors allocated on adapter, used for ring interleaving
- * @v_idx: index of vector in adapter struct
- * @txr_count: total number of Tx rings to allocate
- * @txr_idx: index of first Tx ring to allocate
- * @rxr_count: total number of Rx rings to allocate
- * @rxr_idx: index of first Rx ring to allocate
- *
- * We allocate one q_vector. If allocation fails we return -ENOMEM.
- **/
-static int igb_alloc_q_vector(struct igb_adapter *adapter,
- unsigned int v_count, unsigned int v_idx,
- unsigned int txr_count, unsigned int txr_idx,
- unsigned int rxr_count, unsigned int rxr_idx)
-{
- struct igb_q_vector *q_vector;
- struct igb_ring *ring;
- int ring_count, size;
-
- /* igb only supports 1 Tx and/or 1 Rx queue per vector */
- if (txr_count > 1 || rxr_count > 1)
- return -ENOMEM;
-
- ring_count = txr_count + rxr_count;
- size = sizeof(struct igb_q_vector) +
- (sizeof(struct igb_ring) * ring_count);
-
- /* allocate q_vector and rings */
- q_vector = kzalloc(size, GFP_KERNEL);
- if (!q_vector)
- return -ENOMEM;
-
-#ifndef IGB_NO_LRO
- /* initialize LRO */
- __skb_queue_head_init(&q_vector->lrolist.active);
-
-#endif
- /* initialize NAPI */
- netif_napi_add(adapter->netdev, &q_vector->napi,
- igb_poll, 64);
-
- /* tie q_vector and adapter together */
- adapter->q_vector[v_idx] = q_vector;
- q_vector->adapter = adapter;
-
- /* initialize work limits */
- q_vector->tx.work_limit = adapter->tx_work_limit;
-
- /* initialize ITR configuration */
- q_vector->itr_register = adapter->hw.hw_addr + E1000_EITR(0);
- q_vector->itr_val = IGB_START_ITR;
-
- /* initialize pointer to rings */
- ring = q_vector->ring;
-
- /* initialize ITR */
- if (rxr_count) {
- /* rx or rx/tx vector */
- if (!adapter->rx_itr_setting || adapter->rx_itr_setting > 3)
- q_vector->itr_val = adapter->rx_itr_setting;
- } else {
- /* tx only vector */
- if (!adapter->tx_itr_setting || adapter->tx_itr_setting > 3)
- q_vector->itr_val = adapter->tx_itr_setting;
- }
-
- if (txr_count) {
- /* assign generic ring traits */
- ring->dev = &adapter->pdev->dev;
- ring->netdev = adapter->netdev;
-
- /* configure backlink on ring */
- ring->q_vector = q_vector;
-
- /* update q_vector Tx values */
- igb_add_ring(ring, &q_vector->tx);
-
- /* For 82575, context index must be unique per ring. */
- if (adapter->hw.mac.type == e1000_82575)
- set_bit(IGB_RING_FLAG_TX_CTX_IDX, &ring->flags);
-
- /* apply Tx specific ring traits */
- ring->count = adapter->tx_ring_count;
- ring->queue_index = txr_idx;
-
- /* assign ring to adapter */
- adapter->tx_ring[txr_idx] = ring;
-
- /* push pointer to next ring */
- ring++;
- }
-
- if (rxr_count) {
- /* assign generic ring traits */
- ring->dev = &adapter->pdev->dev;
- ring->netdev = adapter->netdev;
-
- /* configure backlink on ring */
- ring->q_vector = q_vector;
-
- /* update q_vector Rx values */
- igb_add_ring(ring, &q_vector->rx);
-
-#ifndef HAVE_NDO_SET_FEATURES
- /* enable rx checksum */
- set_bit(IGB_RING_FLAG_RX_CSUM, &ring->flags);
-
-#endif
- /* set flag indicating ring supports SCTP checksum offload */
- if (adapter->hw.mac.type >= e1000_82576)
- set_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags);
-
- if ((adapter->hw.mac.type == e1000_i350) ||
- (adapter->hw.mac.type == e1000_i354))
- set_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags);
-
- /* apply Rx specific ring traits */
- ring->count = adapter->rx_ring_count;
- ring->queue_index = rxr_idx;
-
- /* assign ring to adapter */
- adapter->rx_ring[rxr_idx] = ring;
- }
-
- return 0;
-}
-
-/**
- * igb_alloc_q_vectors - Allocate memory for interrupt vectors
- * @adapter: board private structure to initialize
- *
- * We allocate one q_vector per queue interrupt. If allocation fails we
- * return -ENOMEM.
- **/
-static int igb_alloc_q_vectors(struct igb_adapter *adapter)
-{
- int q_vectors = adapter->num_q_vectors;
- int rxr_remaining = adapter->num_rx_queues;
- int txr_remaining = adapter->num_tx_queues;
- int rxr_idx = 0, txr_idx = 0, v_idx = 0;
- int err;
-
- if (q_vectors >= (rxr_remaining + txr_remaining)) {
- for (; rxr_remaining; v_idx++) {
- err = igb_alloc_q_vector(adapter, q_vectors, v_idx,
- 0, 0, 1, rxr_idx);
-
- if (err)
- goto err_out;
-
- /* update counts and index */
- rxr_remaining--;
- rxr_idx++;
- }
- }
-
- for (; v_idx < q_vectors; v_idx++) {
- int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - v_idx);
- int tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - v_idx);
- err = igb_alloc_q_vector(adapter, q_vectors, v_idx,
- tqpv, txr_idx, rqpv, rxr_idx);
-
- if (err)
- goto err_out;
-
- /* update counts and index */
- rxr_remaining -= rqpv;
- txr_remaining -= tqpv;
- rxr_idx++;
- txr_idx++;
- }
-
- return 0;
-
-err_out:
- adapter->num_tx_queues = 0;
- adapter->num_rx_queues = 0;
- adapter->num_q_vectors = 0;
-
- while (v_idx--)
- igb_free_q_vector(adapter, v_idx);
-
- return -ENOMEM;
-}
-
-/**
- * igb_init_interrupt_scheme - initialize interrupts, allocate queues/vectors
- *
- * This function initializes the interrupts and allocates all of the queues.
- **/
-static int igb_init_interrupt_scheme(struct igb_adapter *adapter, bool msix)
-{
- struct pci_dev *pdev = adapter->pdev;
- int err;
-
- igb_set_interrupt_capability(adapter, msix);
-
- err = igb_alloc_q_vectors(adapter);
- if (err) {
- dev_err(pci_dev_to_dev(pdev), "Unable to allocate memory for vectors\n");
- goto err_alloc_q_vectors;
- }
-
- igb_cache_ring_register(adapter);
-
- return 0;
-
-err_alloc_q_vectors:
- igb_reset_interrupt_capability(adapter);
- return err;
-}
-
-/**
- * igb_request_irq - initialize interrupts
- *
- * Attempts to configure interrupts using the best available
- * capabilities of the hardware and kernel.
- **/
-static int igb_request_irq(struct igb_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- int err = 0;
-
- if (adapter->msix_entries) {
- err = igb_request_msix(adapter);
- if (!err)
- goto request_done;
- /* fall back to MSI */
- igb_free_all_tx_resources(adapter);
- igb_free_all_rx_resources(adapter);
-
- igb_clear_interrupt_scheme(adapter);
- igb_reset_sriov_capability(adapter);
- err = igb_init_interrupt_scheme(adapter, false);
- if (err)
- goto request_done;
- igb_setup_all_tx_resources(adapter);
- igb_setup_all_rx_resources(adapter);
- igb_configure(adapter);
- }
-
- igb_assign_vector(adapter->q_vector[0], 0);
-
- if (adapter->flags & IGB_FLAG_HAS_MSI) {
- err = request_irq(pdev->irq, &igb_intr_msi, 0,
- netdev->name, adapter);
- if (!err)
- goto request_done;
-
- /* fall back to legacy interrupts */
- igb_reset_interrupt_capability(adapter);
- adapter->flags &= ~IGB_FLAG_HAS_MSI;
- }
-
- err = request_irq(pdev->irq, &igb_intr, IRQF_SHARED,
- netdev->name, adapter);
-
- if (err)
- dev_err(pci_dev_to_dev(pdev), "Error %d getting interrupt\n",
- err);
-
-request_done:
- return err;
-}
-
-static void igb_free_irq(struct igb_adapter *adapter)
-{
- if (adapter->msix_entries) {
- int vector = 0, i;
-
- free_irq(adapter->msix_entries[vector++].vector, adapter);
-
- for (i = 0; i < adapter->num_q_vectors; i++)
- free_irq(adapter->msix_entries[vector++].vector,
- adapter->q_vector[i]);
- } else {
- free_irq(adapter->pdev->irq, adapter);
- }
-}
-
-/**
- * igb_irq_disable - Mask off interrupt generation on the NIC
- * @adapter: board private structure
- **/
-static void igb_irq_disable(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- /*
- * we need to be careful when disabling interrupts. The VFs are also
- * mapped into these registers and so clearing the bits can cause
- * issues on the VF drivers so we only need to clear what we set
- */
- if (adapter->msix_entries) {
- u32 regval = E1000_READ_REG(hw, E1000_EIAM);
- E1000_WRITE_REG(hw, E1000_EIAM, regval & ~adapter->eims_enable_mask);
- E1000_WRITE_REG(hw, E1000_EIMC, adapter->eims_enable_mask);
- regval = E1000_READ_REG(hw, E1000_EIAC);
- E1000_WRITE_REG(hw, E1000_EIAC, regval & ~adapter->eims_enable_mask);
- }
-
- E1000_WRITE_REG(hw, E1000_IAM, 0);
- E1000_WRITE_REG(hw, E1000_IMC, ~0);
- E1000_WRITE_FLUSH(hw);
-
- if (adapter->msix_entries) {
- int vector = 0, i;
-
- synchronize_irq(adapter->msix_entries[vector++].vector);
-
- for (i = 0; i < adapter->num_q_vectors; i++)
- synchronize_irq(adapter->msix_entries[vector++].vector);
- } else {
- synchronize_irq(adapter->pdev->irq);
- }
-}
-
-/**
- * igb_irq_enable - Enable default interrupt generation settings
- * @adapter: board private structure
- **/
-static void igb_irq_enable(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- if (adapter->msix_entries) {
- u32 ims = E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_DRSTA;
- u32 regval = E1000_READ_REG(hw, E1000_EIAC);
- E1000_WRITE_REG(hw, E1000_EIAC, regval | adapter->eims_enable_mask);
- regval = E1000_READ_REG(hw, E1000_EIAM);
- E1000_WRITE_REG(hw, E1000_EIAM, regval | adapter->eims_enable_mask);
- E1000_WRITE_REG(hw, E1000_EIMS, adapter->eims_enable_mask);
- if (adapter->vfs_allocated_count) {
- E1000_WRITE_REG(hw, E1000_MBVFIMR, 0xFF);
- ims |= E1000_IMS_VMMB;
- if (adapter->mdd)
- if ((adapter->hw.mac.type == e1000_i350) ||
- (adapter->hw.mac.type == e1000_i354))
- ims |= E1000_IMS_MDDET;
- }
- E1000_WRITE_REG(hw, E1000_IMS, ims);
- } else {
- E1000_WRITE_REG(hw, E1000_IMS, IMS_ENABLE_MASK |
- E1000_IMS_DRSTA);
- E1000_WRITE_REG(hw, E1000_IAM, IMS_ENABLE_MASK |
- E1000_IMS_DRSTA);
- }
-}
-
-static void igb_update_mng_vlan(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 vid = adapter->hw.mng_cookie.vlan_id;
- u16 old_vid = adapter->mng_vlan_id;
-
- if (hw->mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
- /* add VID to filter table */
- igb_vfta_set(adapter, vid, TRUE);
- adapter->mng_vlan_id = vid;
- } else {
- adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
- }
-
- if ((old_vid != (u16)IGB_MNG_VLAN_NONE) &&
- (vid != old_vid) &&
-#ifdef HAVE_VLAN_RX_REGISTER
- !vlan_group_get_device(adapter->vlgrp, old_vid)) {
-#else
- !test_bit(old_vid, adapter->active_vlans)) {
-#endif
- /* remove VID from filter table */
- igb_vfta_set(adapter, old_vid, FALSE);
- }
-}
-
-/**
- * igb_release_hw_control - release control of the h/w to f/w
- * @adapter: address of board private structure
- *
- * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
- * For ASF and Pass Through versions of f/w this means that the
- * driver is no longer loaded.
- *
- **/
-static void igb_release_hw_control(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 ctrl_ext;
-
- /* Let firmware take over control of h/w */
- ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
- E1000_WRITE_REG(hw, E1000_CTRL_EXT,
- ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
-}
-
-/**
- * igb_get_hw_control - get control of the h/w from f/w
- * @adapter: address of board private structure
- *
- * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
- * For ASF and Pass Through versions of f/w this means that
- * the driver is loaded.
- *
- **/
-static void igb_get_hw_control(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 ctrl_ext;
-
- /* Let firmware know the driver has taken over */
- ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
- E1000_WRITE_REG(hw, E1000_CTRL_EXT,
- ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
-}
-
-/**
- * igb_configure - configure the hardware for RX and TX
- * @adapter: private board structure
- **/
-static void igb_configure(struct igb_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- int i;
-
- igb_get_hw_control(adapter);
- igb_set_rx_mode(netdev);
-
- igb_restore_vlan(adapter);
-
- igb_setup_tctl(adapter);
- igb_setup_mrqc(adapter);
- igb_setup_rctl(adapter);
-
- igb_configure_tx(adapter);
- igb_configure_rx(adapter);
-
- e1000_rx_fifo_flush_82575(&adapter->hw);
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
- if (adapter->num_tx_queues > 1)
- netdev->features |= NETIF_F_MULTI_QUEUE;
- else
- netdev->features &= ~NETIF_F_MULTI_QUEUE;
-#endif
-
- /* call igb_desc_unused which always leaves
- * at least 1 descriptor unused to make sure
- * next_to_use != next_to_clean */
- for (i = 0; i < adapter->num_rx_queues; i++) {
- struct igb_ring *ring = adapter->rx_ring[i];
- igb_alloc_rx_buffers(ring, igb_desc_unused(ring));
- }
-}
-
-/**
- * igb_power_up_link - Power up the phy/serdes link
- * @adapter: address of board private structure
- **/
-void igb_power_up_link(struct igb_adapter *adapter)
-{
- e1000_phy_hw_reset(&adapter->hw);
-
- if (adapter->hw.phy.media_type == e1000_media_type_copper)
- e1000_power_up_phy(&adapter->hw);
- else
- e1000_power_up_fiber_serdes_link(&adapter->hw);
-}
-
-/**
- * igb_power_down_link - Power down the phy/serdes link
- * @adapter: address of board private structure
- */
-static void igb_power_down_link(struct igb_adapter *adapter)
-{
- if (adapter->hw.phy.media_type == e1000_media_type_copper)
- e1000_power_down_phy(&adapter->hw);
- else
- e1000_shutdown_fiber_serdes_link(&adapter->hw);
-}
-
-/* Detect and switch function for Media Auto Sense */
-static void igb_check_swap_media(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 ctrl_ext, connsw;
- bool swap_now = false;
- bool link;
-
- ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
- connsw = E1000_READ_REG(hw, E1000_CONNSW);
- link = igb_has_link(adapter);
- (void) link;
-
- /* need to live swap if current media is copper and we have fiber/serdes
- * to go to.
- */
-
- if ((hw->phy.media_type == e1000_media_type_copper) &&
- (!(connsw & E1000_CONNSW_AUTOSENSE_EN))) {
- swap_now = true;
- } else if (!(connsw & E1000_CONNSW_SERDESD)) {
- /* copper signal takes time to appear */
- if (adapter->copper_tries < 2) {
- adapter->copper_tries++;
- connsw |= E1000_CONNSW_AUTOSENSE_CONF;
- E1000_WRITE_REG(hw, E1000_CONNSW, connsw);
- return;
- } else {
- adapter->copper_tries = 0;
- if ((connsw & E1000_CONNSW_PHYSD) &&
- (!(connsw & E1000_CONNSW_PHY_PDN))) {
- swap_now = true;
- connsw &= ~E1000_CONNSW_AUTOSENSE_CONF;
- E1000_WRITE_REG(hw, E1000_CONNSW, connsw);
- }
- }
- }
-
- if (swap_now) {
- switch (hw->phy.media_type) {
- case e1000_media_type_copper:
- dev_info(pci_dev_to_dev(adapter->pdev),
- "%s:MAS: changing media to fiber/serdes\n",
- adapter->netdev->name);
- ctrl_ext |=
- E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
- adapter->flags |= IGB_FLAG_MEDIA_RESET;
- adapter->copper_tries = 0;
- break;
- case e1000_media_type_internal_serdes:
- case e1000_media_type_fiber:
- dev_info(pci_dev_to_dev(adapter->pdev),
- "%s:MAS: changing media to copper\n",
- adapter->netdev->name);
- ctrl_ext &=
- ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
- adapter->flags |= IGB_FLAG_MEDIA_RESET;
- break;
- default:
- /* shouldn't get here during regular operation */
- dev_err(pci_dev_to_dev(adapter->pdev),
- "%s:AMS: Invalid media type found, returning\n",
- adapter->netdev->name);
- break;
- }
- E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
- }
-}
-
-#ifdef HAVE_I2C_SUPPORT
-/* igb_get_i2c_data - Reads the I2C SDA data bit
- * @hw: pointer to hardware structure
- * @i2cctl: Current value of I2CCTL register
- *
- * Returns the I2C data bit value
- */
-static int igb_get_i2c_data(void *data)
-{
- struct igb_adapter *adapter = data;
- struct e1000_hw *hw = &adapter->hw;
- s32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
-
- return (i2cctl & E1000_I2C_DATA_IN) != 0;
-}
-
-/* igb_set_i2c_data - Sets the I2C data bit
- * @data: pointer to hardware structure
- * @state: I2C data value (0 or 1) to set
- *
- * Sets the I2C data bit
- */
-static void igb_set_i2c_data(void *data, int state)
-{
- struct igb_adapter *adapter = data;
- struct e1000_hw *hw = &adapter->hw;
- s32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
-
- if (state)
- i2cctl |= E1000_I2C_DATA_OUT;
- else
- i2cctl &= ~E1000_I2C_DATA_OUT;
-
- i2cctl &= ~E1000_I2C_DATA_OE_N;
- i2cctl |= E1000_I2C_CLK_OE_N;
-
- E1000_WRITE_REG(hw, E1000_I2CPARAMS, i2cctl);
- E1000_WRITE_FLUSH(hw);
-
-}
-
-/* igb_set_i2c_clk - Sets the I2C SCL clock
- * @data: pointer to hardware structure
- * @state: state to set clock
- *
- * Sets the I2C clock line to state
- */
-static void igb_set_i2c_clk(void *data, int state)
-{
- struct igb_adapter *adapter = data;
- struct e1000_hw *hw = &adapter->hw;
- s32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
-
- if (state) {
- i2cctl |= E1000_I2C_CLK_OUT;
- i2cctl &= ~E1000_I2C_CLK_OE_N;
- } else {
- i2cctl &= ~E1000_I2C_CLK_OUT;
- i2cctl &= ~E1000_I2C_CLK_OE_N;
- }
- E1000_WRITE_REG(hw, E1000_I2CPARAMS, i2cctl);
- E1000_WRITE_FLUSH(hw);
-}
-
-/* igb_get_i2c_clk - Gets the I2C SCL clock state
- * @data: pointer to hardware structure
- *
- * Gets the I2C clock state
- */
-static int igb_get_i2c_clk(void *data)
-{
- struct igb_adapter *adapter = data;
- struct e1000_hw *hw = &adapter->hw;
- s32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
-
- return (i2cctl & E1000_I2C_CLK_IN) != 0;
-}
-
-static const struct i2c_algo_bit_data igb_i2c_algo = {
- .setsda = igb_set_i2c_data,
- .setscl = igb_set_i2c_clk,
- .getsda = igb_get_i2c_data,
- .getscl = igb_get_i2c_clk,
- .udelay = 5,
- .timeout = 20,
-};
-
-/* igb_init_i2c - Init I2C interface
- * @adapter: pointer to adapter structure
- *
- */
-static s32 igb_init_i2c(struct igb_adapter *adapter)
-{
- s32 status = E1000_SUCCESS;
-
- /* I2C interface supported on i350 devices */
- if (adapter->hw.mac.type != e1000_i350)
- return E1000_SUCCESS;
-
- /* Initialize the i2c bus which is controlled by the registers.
- * This bus will use the i2c_algo_bit structue that implements
- * the protocol through toggling of the 4 bits in the register.
- */
- adapter->i2c_adap.owner = THIS_MODULE;
- adapter->i2c_algo = igb_i2c_algo;
- adapter->i2c_algo.data = adapter;
- adapter->i2c_adap.algo_data = &adapter->i2c_algo;
- adapter->i2c_adap.dev.parent = &adapter->pdev->dev;
- strlcpy(adapter->i2c_adap.name, "igb BB",
- sizeof(adapter->i2c_adap.name));
- status = i2c_bit_add_bus(&adapter->i2c_adap);
- return status;
-}
-
-#endif /* HAVE_I2C_SUPPORT */
-/**
- * igb_up - Open the interface and prepare it to handle traffic
- * @adapter: board private structure
- **/
-int igb_up(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- int i;
-
- /* hardware has been reset, we need to reload some things */
- igb_configure(adapter);
-
- clear_bit(__IGB_DOWN, &adapter->state);
-
- for (i = 0; i < adapter->num_q_vectors; i++)
- napi_enable(&(adapter->q_vector[i]->napi));
-
- if (adapter->msix_entries)
- igb_configure_msix(adapter);
- else
- igb_assign_vector(adapter->q_vector[0], 0);
-
- igb_configure_lli(adapter);
-
- /* Clear any pending interrupts. */
- E1000_READ_REG(hw, E1000_ICR);
- igb_irq_enable(adapter);
-
- /* notify VFs that reset has been completed */
- if (adapter->vfs_allocated_count) {
- u32 reg_data = E1000_READ_REG(hw, E1000_CTRL_EXT);
- reg_data |= E1000_CTRL_EXT_PFRSTD;
- E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg_data);
- }
-
- netif_tx_start_all_queues(adapter->netdev);
-
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- schedule_work(&adapter->dma_err_task);
- /* start the watchdog. */
- hw->mac.get_link_status = 1;
- schedule_work(&adapter->watchdog_task);
-
- if ((adapter->flags & IGB_FLAG_EEE) &&
- (!hw->dev_spec._82575.eee_disable))
- adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T;
-
- return 0;
-}
-
-void igb_down(struct igb_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct e1000_hw *hw = &adapter->hw;
- u32 tctl, rctl;
- int i;
-
- /* signal that we're down so the interrupt handler does not
- * reschedule our watchdog timer */
- set_bit(__IGB_DOWN, &adapter->state);
-
- /* disable receives in the hardware */
- rctl = E1000_READ_REG(hw, E1000_RCTL);
- E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
- /* flush and sleep below */
-
- netif_tx_stop_all_queues(netdev);
-
- /* disable transmits in the hardware */
- tctl = E1000_READ_REG(hw, E1000_TCTL);
- tctl &= ~E1000_TCTL_EN;
- E1000_WRITE_REG(hw, E1000_TCTL, tctl);
- /* flush both disables and wait for them to finish */
- E1000_WRITE_FLUSH(hw);
- usleep_range(10000, 20000);
-
- for (i = 0; i < adapter->num_q_vectors; i++)
- napi_disable(&(adapter->q_vector[i]->napi));
-
- igb_irq_disable(adapter);
-
- adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE;
-
- del_timer_sync(&adapter->watchdog_timer);
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- del_timer_sync(&adapter->dma_err_timer);
- del_timer_sync(&adapter->phy_info_timer);
-
- netif_carrier_off(netdev);
-
- /* record the stats before reset*/
- igb_update_stats(adapter);
-
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
-
-#ifdef HAVE_PCI_ERS
- if (!pci_channel_offline(adapter->pdev))
- igb_reset(adapter);
-#else
- igb_reset(adapter);
-#endif
- igb_clean_all_tx_rings(adapter);
- igb_clean_all_rx_rings(adapter);
-#ifdef IGB_DCA
- /* since we reset the hardware DCA settings were cleared */
- igb_setup_dca(adapter);
-#endif
-}
-
-void igb_reinit_locked(struct igb_adapter *adapter)
-{
- WARN_ON(in_interrupt());
- while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
- usleep_range(1000, 2000);
- igb_down(adapter);
- igb_up(adapter);
- clear_bit(__IGB_RESETTING, &adapter->state);
-}
-
-/**
- * igb_enable_mas - Media Autosense re-enable after swap
- *
- * @adapter: adapter struct
- **/
-static s32 igb_enable_mas(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 connsw;
- s32 ret_val = E1000_SUCCESS;
-
- connsw = E1000_READ_REG(hw, E1000_CONNSW);
- if (hw->phy.media_type == e1000_media_type_copper) {
- /* configure for SerDes media detect */
- if (!(connsw & E1000_CONNSW_SERDESD)) {
- connsw |= E1000_CONNSW_ENRGSRC;
- connsw |= E1000_CONNSW_AUTOSENSE_EN;
- E1000_WRITE_REG(hw, E1000_CONNSW, connsw);
- E1000_WRITE_FLUSH(hw);
- } else if (connsw & E1000_CONNSW_SERDESD) {
- /* already SerDes, no need to enable anything */
- return ret_val;
- } else {
- dev_info(pci_dev_to_dev(adapter->pdev),
- "%s:MAS: Unable to configure feature, disabling..\n",
- adapter->netdev->name);
- adapter->flags &= ~IGB_FLAG_MAS_ENABLE;
- }
- }
- return ret_val;
-}
-
-void igb_reset(struct igb_adapter *adapter)
-{
- struct pci_dev *pdev = adapter->pdev;
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_mac_info *mac = &hw->mac;
- struct e1000_fc_info *fc = &hw->fc;
- u32 pba = 0, tx_space, min_tx_space, min_rx_space, hwm;
-
- /* Repartition Pba for greater than 9k mtu
- * To take effect CTRL.RST is required.
- */
- switch (mac->type) {
- case e1000_i350:
- case e1000_82580:
- case e1000_i354:
- pba = E1000_READ_REG(hw, E1000_RXPBS);
- pba = e1000_rxpbs_adjust_82580(pba);
- break;
- case e1000_82576:
- pba = E1000_READ_REG(hw, E1000_RXPBS);
- pba &= E1000_RXPBS_SIZE_MASK_82576;
- break;
- case e1000_82575:
- case e1000_i210:
- case e1000_i211:
- default:
- pba = E1000_PBA_34K;
- break;
- }
-
- if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) &&
- (mac->type < e1000_82576)) {
- /* adjust PBA for jumbo frames */
- E1000_WRITE_REG(hw, E1000_PBA, pba);
-
- /* To maintain wire speed transmits, the Tx FIFO should be
- * large enough to accommodate two full transmit packets,
- * rounded up to the next 1KB and expressed in KB. Likewise,
- * the Rx FIFO should be large enough to accommodate at least
- * one full receive packet and is similarly rounded up and
- * expressed in KB. */
- pba = E1000_READ_REG(hw, E1000_PBA);
- /* upper 16 bits has Tx packet buffer allocation size in KB */
- tx_space = pba >> 16;
- /* lower 16 bits has Rx packet buffer allocation size in KB */
- pba &= 0xffff;
- /* the tx fifo also stores 16 bytes of information about the tx
- * but don't include ethernet FCS because hardware appends it */
- min_tx_space = (adapter->max_frame_size +
- sizeof(union e1000_adv_tx_desc) -
- ETH_FCS_LEN) * 2;
- min_tx_space = ALIGN(min_tx_space, 1024);
- min_tx_space >>= 10;
- /* software strips receive CRC, so leave room for it */
- min_rx_space = adapter->max_frame_size;
- min_rx_space = ALIGN(min_rx_space, 1024);
- min_rx_space >>= 10;
-
- /* If current Tx allocation is less than the min Tx FIFO size,
- * and the min Tx FIFO size is less than the current Rx FIFO
- * allocation, take space away from current Rx allocation */
- if (tx_space < min_tx_space &&
- ((min_tx_space - tx_space) < pba)) {
- pba = pba - (min_tx_space - tx_space);
-
- /* if short on rx space, rx wins and must trump tx
- * adjustment */
- if (pba < min_rx_space)
- pba = min_rx_space;
- }
- E1000_WRITE_REG(hw, E1000_PBA, pba);
- }
-
- /* flow control settings */
- /* The high water mark must be low enough to fit one full frame
- * (or the size used for early receive) above it in the Rx FIFO.
- * Set it to the lower of:
- * - 90% of the Rx FIFO size, or
- * - the full Rx FIFO size minus one full frame */
- hwm = min(((pba << 10) * 9 / 10),
- ((pba << 10) - 2 * adapter->max_frame_size));
-
- fc->high_water = hwm & 0xFFFFFFF0; /* 16-byte granularity */
- fc->low_water = fc->high_water - 16;
- fc->pause_time = 0xFFFF;
- fc->send_xon = 1;
- fc->current_mode = fc->requested_mode;
-
- /* disable receive for all VFs and wait one second */
- if (adapter->vfs_allocated_count) {
- int i;
- /*
- * Clear all flags except indication that the PF has set
- * the VF MAC addresses administratively
- */
- for (i = 0 ; i < adapter->vfs_allocated_count; i++)
- adapter->vf_data[i].flags &= IGB_VF_FLAG_PF_SET_MAC;
-
- /* ping all the active vfs to let them know we are going down */
- igb_ping_all_vfs(adapter);
-
- /* disable transmits and receives */
- E1000_WRITE_REG(hw, E1000_VFRE, 0);
- E1000_WRITE_REG(hw, E1000_VFTE, 0);
- }
-
- /* Allow time for pending master requests to run */
- e1000_reset_hw(hw);
- E1000_WRITE_REG(hw, E1000_WUC, 0);
-
- if (adapter->flags & IGB_FLAG_MEDIA_RESET) {
- e1000_setup_init_funcs(hw, TRUE);
- igb_check_options(adapter);
- e1000_get_bus_info(hw);
- adapter->flags &= ~IGB_FLAG_MEDIA_RESET;
- }
- if (adapter->flags & IGB_FLAG_MAS_ENABLE) {
- if (igb_enable_mas(adapter))
- dev_err(pci_dev_to_dev(pdev),
- "Error enabling Media Auto Sense\n");
- }
- if (e1000_init_hw(hw))
- dev_err(pci_dev_to_dev(pdev), "Hardware Error\n");
-
- /*
- * Flow control settings reset on hardware reset, so guarantee flow
- * control is off when forcing speed.
- */
- if (!hw->mac.autoneg)
- e1000_force_mac_fc(hw);
-
- igb_init_dmac(adapter, pba);
- /* Re-initialize the thermal sensor on i350 devices. */
- if (mac->type == e1000_i350 && hw->bus.func == 0) {
- /*
- * If present, re-initialize the external thermal sensor
- * interface.
- */
- if (adapter->ets)
- e1000_set_i2c_bb(hw);
- e1000_init_thermal_sensor_thresh(hw);
- }
-
- /*Re-establish EEE setting */
- if (hw->phy.media_type == e1000_media_type_copper) {
- switch (mac->type) {
- case e1000_i350:
- case e1000_i210:
- case e1000_i211:
- e1000_set_eee_i350(hw);
- break;
- case e1000_i354:
- e1000_set_eee_i354(hw);
- break;
- default:
- break;
- }
- }
-
- if (!netif_running(adapter->netdev))
- igb_power_down_link(adapter);
-
- igb_update_mng_vlan(adapter);
-
- /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
- E1000_WRITE_REG(hw, E1000_VET, ETHERNET_IEEE_VLAN_TYPE);
-
-
-#ifdef HAVE_PTP_1588_CLOCK
- /* Re-enable PTP, where applicable. */
- igb_ptp_reset(adapter);
-#endif /* HAVE_PTP_1588_CLOCK */
-
- e1000_get_phy_info(hw);
-
- adapter->devrc++;
-}
-
-#ifdef HAVE_NDO_SET_FEATURES
-static kni_netdev_features_t igb_fix_features(struct net_device *netdev,
- kni_netdev_features_t features)
-{
- /*
- * Since there is no support for separate tx vlan accel
- * enabled make sure tx flag is cleared if rx is.
- */
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
- if (!(features & NETIF_F_HW_VLAN_CTAG_RX))
- features &= ~NETIF_F_HW_VLAN_CTAG_TX;
-#else
- if (!(features & NETIF_F_HW_VLAN_RX))
- features &= ~NETIF_F_HW_VLAN_TX;
-#endif
-
- /* If Rx checksum is disabled, then LRO should also be disabled */
- if (!(features & NETIF_F_RXCSUM))
- features &= ~NETIF_F_LRO;
-
- return features;
-}
-
-static int igb_set_features(struct net_device *netdev,
- kni_netdev_features_t features)
-{
- u32 changed = netdev->features ^ features;
-
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
- if (changed & NETIF_F_HW_VLAN_CTAG_RX)
-#else
- if (changed & NETIF_F_HW_VLAN_RX)
-#endif
- igb_vlan_mode(netdev, features);
-
- return 0;
-}
-
-#ifdef NTF_SELF
-#ifdef USE_CONST_DEV_UC_CHAR
-static int igb_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
- struct net_device *dev,
- const unsigned char *addr,
-#ifdef HAVE_NDO_FDB_ADD_VID
- u16 vid,
-#endif
- u16 flags)
-#else
-static int igb_ndo_fdb_add(struct ndmsg *ndm,
- struct net_device *dev,
- unsigned char *addr,
- u16 flags)
-#endif
-{
- struct igb_adapter *adapter = netdev_priv(dev);
- struct e1000_hw *hw = &adapter->hw;
- int err;
-
- if (!(adapter->vfs_allocated_count))
- return -EOPNOTSUPP;
-
- /* Hardware does not support aging addresses so if a
- * ndm_state is given only allow permanent addresses
- */
- if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
- pr_info("%s: FDB only supports static addresses\n",
- igb_driver_name);
- return -EINVAL;
- }
-
- if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) {
- u32 rar_uc_entries = hw->mac.rar_entry_count -
- (adapter->vfs_allocated_count + 1);
-
- if (netdev_uc_count(dev) < rar_uc_entries)
- err = dev_uc_add_excl(dev, addr);
- else
- err = -ENOMEM;
- } else if (is_multicast_ether_addr(addr)) {
- err = dev_mc_add_excl(dev, addr);
- } else {
- err = -EINVAL;
- }
-
- /* Only return duplicate errors if NLM_F_EXCL is set */
- if (err == -EEXIST && !(flags & NLM_F_EXCL))
- err = 0;
-
- return err;
-}
-
-#ifndef USE_DEFAULT_FDB_DEL_DUMP
-#ifdef USE_CONST_DEV_UC_CHAR
-static int igb_ndo_fdb_del(struct ndmsg *ndm,
- struct net_device *dev,
- const unsigned char *addr)
-#else
-static int igb_ndo_fdb_del(struct ndmsg *ndm,
- struct net_device *dev,
- unsigned char *addr)
-#endif
-{
- struct igb_adapter *adapter = netdev_priv(dev);
- int err = -EOPNOTSUPP;
-
- if (ndm->ndm_state & NUD_PERMANENT) {
- pr_info("%s: FDB only supports static addresses\n",
- igb_driver_name);
- return -EINVAL;
- }
-
- if (adapter->vfs_allocated_count) {
- if (is_unicast_ether_addr(addr))
- err = dev_uc_del(dev, addr);
- else if (is_multicast_ether_addr(addr))
- err = dev_mc_del(dev, addr);
- else
- err = -EINVAL;
- }
-
- return err;
-}
-
-static int igb_ndo_fdb_dump(struct sk_buff *skb,
- struct netlink_callback *cb,
- struct net_device *dev,
- int idx)
-{
- struct igb_adapter *adapter = netdev_priv(dev);
-
- if (adapter->vfs_allocated_count)
- idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);
-
- return idx;
-}
-#endif /* USE_DEFAULT_FDB_DEL_DUMP */
-
-#ifdef HAVE_BRIDGE_ATTRIBS
-#ifdef HAVE_NDO_BRIDGE_SET_DEL_LINK_FLAGS
-static int igb_ndo_bridge_setlink(struct net_device *dev,
- struct nlmsghdr *nlh,
- u16 flags)
-#else
-static int igb_ndo_bridge_setlink(struct net_device *dev,
- struct nlmsghdr *nlh)
-#endif /* HAVE_NDO_BRIDGE_SET_DEL_LINK_FLAGS */
-{
- struct igb_adapter *adapter = netdev_priv(dev);
- struct e1000_hw *hw = &adapter->hw;
- struct nlattr *attr, *br_spec;
- int rem;
-
- if (!(adapter->vfs_allocated_count))
- return -EOPNOTSUPP;
-
- switch (adapter->hw.mac.type) {
- case e1000_82576:
- case e1000_i350:
- case e1000_i354:
- break;
- default:
- return -EOPNOTSUPP;
- }
-
- br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
-
- nla_for_each_nested(attr, br_spec, rem) {
- __u16 mode;
-
- if (nla_type(attr) != IFLA_BRIDGE_MODE)
- continue;
-
- mode = nla_get_u16(attr);
- if (mode == BRIDGE_MODE_VEPA) {
- e1000_vmdq_set_loopback_pf(hw, 0);
- adapter->flags &= ~IGB_FLAG_LOOPBACK_ENABLE;
- } else if (mode == BRIDGE_MODE_VEB) {
- e1000_vmdq_set_loopback_pf(hw, 1);
- adapter->flags |= IGB_FLAG_LOOPBACK_ENABLE;
- } else
- return -EINVAL;
-
- netdev_info(adapter->netdev, "enabling bridge mode: %s\n",
- mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
- }
-
- return 0;
-}
-
-#ifdef HAVE_BRIDGE_FILTER
-#ifdef HAVE_NDO_BRIDGE_GETLINK_NLFLAGS
-static int igb_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
- struct net_device *dev, u32 filter_mask,
- int nlflags)
-#else
-static int igb_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
- struct net_device *dev, u32 filter_mask)
-#endif /* HAVE_NDO_BRIDGE_GETLINK_NLFLAGS */
-#else
-static int igb_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
- struct net_device *dev)
-#endif
-{
- struct igb_adapter *adapter = netdev_priv(dev);
- u16 mode;
-
- if (!(adapter->vfs_allocated_count))
- return -EOPNOTSUPP;
-
- if (adapter->flags & IGB_FLAG_LOOPBACK_ENABLE)
- mode = BRIDGE_MODE_VEB;
- else
- mode = BRIDGE_MODE_VEPA;
-
-#ifdef HAVE_NDO_DFLT_BRIDGE_ADD_MASK
-#ifdef HAVE_NDO_BRIDGE_GETLINK_NLFLAGS
-#ifdef HAVE_NDO_BRIDGE_GETLINK_FILTER_MASK_VLAN_FILL
- return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, 0, 0,
- nlflags, filter_mask, NULL);
-#else
- return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, 0, 0, nlflags);
-#endif /* HAVE_NDO_BRIDGE_GETLINK_FILTER_MASK_VLAN_FILL */
-#else
- return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, 0, 0);
-#endif /* HAVE_NDO_BRIDGE_GETLINK_NLFLAGS */
-#else
- return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode);
-#endif /* HAVE_NDO_DFLT_BRIDGE_ADD_MASK */
-}
-#endif /* HAVE_BRIDGE_ATTRIBS */
-#endif /* NTF_SELF */
-
-#endif /* HAVE_NDO_SET_FEATURES */
-#ifdef HAVE_NET_DEVICE_OPS
-static const struct net_device_ops igb_netdev_ops = {
- .ndo_open = igb_open,
- .ndo_stop = igb_close,
- .ndo_start_xmit = igb_xmit_frame,
- .ndo_get_stats = igb_get_stats,
- .ndo_set_rx_mode = igb_set_rx_mode,
- .ndo_set_mac_address = igb_set_mac,
- .ndo_change_mtu = igb_change_mtu,
- .ndo_do_ioctl = igb_ioctl,
- .ndo_tx_timeout = igb_tx_timeout,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid,
- .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid,
-#ifdef IFLA_VF_MAX
- .ndo_set_vf_mac = igb_ndo_set_vf_mac,
- .ndo_set_vf_vlan = igb_ndo_set_vf_vlan,
-#ifdef HAVE_VF_MIN_MAX_TXRATE
- .ndo_set_vf_rate = igb_ndo_set_vf_bw,
-#else /* HAVE_VF_MIN_MAX_TXRATE */
- .ndo_set_vf_tx_rate = igb_ndo_set_vf_bw,
-#endif /* HAVE_VF_MIN_MAX_TXRATE */
- .ndo_get_vf_config = igb_ndo_get_vf_config,
-#ifdef HAVE_VF_SPOOFCHK_CONFIGURE
- .ndo_set_vf_spoofchk = igb_ndo_set_vf_spoofchk,
-#endif /* HAVE_VF_SPOOFCHK_CONFIGURE */
-#endif /* IFLA_VF_MAX */
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = igb_netpoll,
-#endif
-#ifdef HAVE_NDO_SET_FEATURES
- .ndo_fix_features = igb_fix_features,
- .ndo_set_features = igb_set_features,
-#endif
-#ifdef HAVE_VLAN_RX_REGISTER
- .ndo_vlan_rx_register = igb_vlan_mode,
-#endif
-#ifndef HAVE_RHEL6_NETDEV_OPS_EXT_FDB
-#ifdef NTF_SELF
- .ndo_fdb_add = igb_ndo_fdb_add,
-#ifndef USE_DEFAULT_FDB_DEL_DUMP
- .ndo_fdb_del = igb_ndo_fdb_del,
- .ndo_fdb_dump = igb_ndo_fdb_dump,
-#endif
-#endif /* ! HAVE_RHEL6_NETDEV_OPS_EXT_FDB */
-#ifdef HAVE_BRIDGE_ATTRIBS
- .ndo_bridge_setlink = igb_ndo_bridge_setlink,
- .ndo_bridge_getlink = igb_ndo_bridge_getlink,
-#endif /* HAVE_BRIDGE_ATTRIBS */
-#endif
-};
-
-#ifdef CONFIG_IGB_VMDQ_NETDEV
-static const struct net_device_ops igb_vmdq_ops = {
- .ndo_open = &igb_vmdq_open,
- .ndo_stop = &igb_vmdq_close,
- .ndo_start_xmit = &igb_vmdq_xmit_frame,
- .ndo_get_stats = &igb_vmdq_get_stats,
- .ndo_set_rx_mode = &igb_vmdq_set_rx_mode,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = &igb_vmdq_set_mac,
- .ndo_change_mtu = &igb_vmdq_change_mtu,
- .ndo_tx_timeout = &igb_vmdq_tx_timeout,
- .ndo_vlan_rx_register = &igb_vmdq_vlan_rx_register,
- .ndo_vlan_rx_add_vid = &igb_vmdq_vlan_rx_add_vid,
- .ndo_vlan_rx_kill_vid = &igb_vmdq_vlan_rx_kill_vid,
-};
-
-#endif /* CONFIG_IGB_VMDQ_NETDEV */
-#endif /* HAVE_NET_DEVICE_OPS */
-#ifdef CONFIG_IGB_VMDQ_NETDEV
-void igb_assign_vmdq_netdev_ops(struct net_device *vnetdev)
-{
-#ifdef HAVE_NET_DEVICE_OPS
- vnetdev->netdev_ops = &igb_vmdq_ops;
-#else
- dev->open = &igb_vmdq_open;
- dev->stop = &igb_vmdq_close;
- dev->hard_start_xmit = &igb_vmdq_xmit_frame;
- dev->get_stats = &igb_vmdq_get_stats;
-#ifdef HAVE_SET_RX_MODE
- dev->set_rx_mode = &igb_vmdq_set_rx_mode;
-#endif
- dev->set_multicast_list = &igb_vmdq_set_rx_mode;
- dev->set_mac_address = &igb_vmdq_set_mac;
- dev->change_mtu = &igb_vmdq_change_mtu;
-#ifdef HAVE_TX_TIMEOUT
- dev->tx_timeout = &igb_vmdq_tx_timeout;
-#endif
-#if defined(NETIF_F_HW_VLAN_TX) || defined(NETIF_F_HW_VLAN_CTAG_TX)
- dev->vlan_rx_register = &igb_vmdq_vlan_rx_register;
- dev->vlan_rx_add_vid = &igb_vmdq_vlan_rx_add_vid;
- dev->vlan_rx_kill_vid = &igb_vmdq_vlan_rx_kill_vid;
-#endif
-#endif
- igb_vmdq_set_ethtool_ops(vnetdev);
- vnetdev->watchdog_timeo = 5 * HZ;
-
-}
-
-int igb_init_vmdq_netdevs(struct igb_adapter *adapter)
-{
- int pool, err = 0, base_queue;
- struct net_device *vnetdev;
- struct igb_vmdq_adapter *vmdq_adapter;
-
- for (pool = 1; pool < adapter->vmdq_pools; pool++) {
- int qpp = (!adapter->rss_queues ? 1 : adapter->rss_queues);
- base_queue = pool * qpp;
- vnetdev = alloc_etherdev(sizeof(struct igb_vmdq_adapter));
- if (!vnetdev) {
- err = -ENOMEM;
- break;
- }
- vmdq_adapter = netdev_priv(vnetdev);
- vmdq_adapter->vnetdev = vnetdev;
- vmdq_adapter->real_adapter = adapter;
- vmdq_adapter->rx_ring = adapter->rx_ring[base_queue];
- vmdq_adapter->tx_ring = adapter->tx_ring[base_queue];
- igb_assign_vmdq_netdev_ops(vnetdev);
- snprintf(vnetdev->name, IFNAMSIZ, "%sv%d",
- adapter->netdev->name, pool);
- vnetdev->features = adapter->netdev->features;
-#ifdef HAVE_NETDEV_VLAN_FEATURES
- vnetdev->vlan_features = adapter->netdev->vlan_features;
-#endif
- adapter->vmdq_netdev[pool-1] = vnetdev;
- err = register_netdev(vnetdev);
- if (err)
- break;
- }
- return err;
-}
-
-int igb_remove_vmdq_netdevs(struct igb_adapter *adapter)
-{
- int pool, err = 0;
-
- for (pool = 1; pool < adapter->vmdq_pools; pool++) {
- unregister_netdev(adapter->vmdq_netdev[pool-1]);
- free_netdev(adapter->vmdq_netdev[pool-1]);
- adapter->vmdq_netdev[pool-1] = NULL;
- }
- return err;
-}
-#endif /* CONFIG_IGB_VMDQ_NETDEV */
-
-/**
- * igb_set_fw_version - Configure version string for ethtool
- * @adapter: adapter struct
- *
- **/
-static void igb_set_fw_version(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_fw_version fw;
-
- e1000_get_fw_version(hw, &fw);
-
- switch (hw->mac.type) {
- case e1000_i210:
- case e1000_i211:
- if (!(e1000_get_flash_presence_i210(hw))) {
- snprintf(adapter->fw_version,
- sizeof(adapter->fw_version),
- "%2d.%2d-%d",
- fw.invm_major, fw.invm_minor, fw.invm_img_type);
- break;
- }
- /* fall through */
- default:
- /* if option rom is valid, display its version too*/
- if (fw.or_valid) {
- snprintf(adapter->fw_version,
- sizeof(adapter->fw_version),
- "%d.%d, 0x%08x, %d.%d.%d",
- fw.eep_major, fw.eep_minor, fw.etrack_id,
- fw.or_major, fw.or_build, fw.or_patch);
- /* no option rom */
- } else {
- if (fw.etrack_id != 0X0000) {
- snprintf(adapter->fw_version,
- sizeof(adapter->fw_version),
- "%d.%d, 0x%08x",
- fw.eep_major, fw.eep_minor, fw.etrack_id);
- } else {
- snprintf(adapter->fw_version,
- sizeof(adapter->fw_version),
- "%d.%d.%d",
- fw.eep_major, fw.eep_minor, fw.eep_build);
- }
- }
- break;
- }
-
- return;
-}
-
-/**
- * igb_init_mas - init Media Autosense feature if enabled in the NVM
- *
- * @adapter: adapter struct
- **/
-static void igb_init_mas(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 eeprom_data;
-
- e1000_read_nvm(hw, NVM_COMPAT, 1, &eeprom_data);
- switch (hw->bus.func) {
- case E1000_FUNC_0:
- if (eeprom_data & IGB_MAS_ENABLE_0)
- adapter->flags |= IGB_FLAG_MAS_ENABLE;
- break;
- case E1000_FUNC_1:
- if (eeprom_data & IGB_MAS_ENABLE_1)
- adapter->flags |= IGB_FLAG_MAS_ENABLE;
- break;
- case E1000_FUNC_2:
- if (eeprom_data & IGB_MAS_ENABLE_2)
- adapter->flags |= IGB_FLAG_MAS_ENABLE;
- break;
- case E1000_FUNC_3:
- if (eeprom_data & IGB_MAS_ENABLE_3)
- adapter->flags |= IGB_FLAG_MAS_ENABLE;
- break;
- default:
- /* Shouldn't get here */
- dev_err(pci_dev_to_dev(adapter->pdev),
- "%s:AMS: Invalid port configuration, returning\n",
- adapter->netdev->name);
- break;
- }
-}
-
-/**
- * igb_probe - Device Initialization Routine
- * @pdev: PCI device information struct
- * @ent: entry in igb_pci_tbl
- *
- * Returns 0 on success, negative on failure
- *
- * igb_probe initializes an adapter identified by a pci_dev structure.
- * The OS initialization, configuring of the adapter private structure,
- * and a hardware reset occur.
- **/
-static int __devinit igb_probe(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct net_device *netdev;
- struct igb_adapter *adapter;
- struct e1000_hw *hw;
- u16 eeprom_data = 0;
- u8 pba_str[E1000_PBANUM_LENGTH];
- s32 ret_val;
- static int global_quad_port_a; /* global quad port a indication */
- int i, err, pci_using_dac;
- static int cards_found;
-
- err = pci_enable_device_mem(pdev);
- if (err)
- return err;
-
- pci_using_dac = 0;
- err = dma_set_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(64));
- if (!err) {
- err = dma_set_coherent_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(64));
- if (!err)
- pci_using_dac = 1;
- } else {
- err = dma_set_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(32));
- if (err) {
- err = dma_set_coherent_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(32));
- if (err) {
- IGB_ERR("No usable DMA configuration, "
- "aborting\n");
- goto err_dma;
- }
- }
- }
-
-#ifndef HAVE_ASPM_QUIRKS
- /* 82575 requires that the pci-e link partner disable the L0s state */
- switch (pdev->device) {
- case E1000_DEV_ID_82575EB_COPPER:
- case E1000_DEV_ID_82575EB_FIBER_SERDES:
- case E1000_DEV_ID_82575GB_QUAD_COPPER:
- pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S);
- default:
- break;
- }
-
-#endif /* HAVE_ASPM_QUIRKS */
- err = pci_request_selected_regions(pdev,
- pci_select_bars(pdev,
- IORESOURCE_MEM),
- igb_driver_name);
- if (err)
- goto err_pci_reg;
-
- pci_enable_pcie_error_reporting(pdev);
-
- pci_set_master(pdev);
-
- err = -ENOMEM;
-#ifdef HAVE_TX_MQ
- netdev = alloc_etherdev_mq(sizeof(struct igb_adapter),
- IGB_MAX_TX_QUEUES);
-#else
- netdev = alloc_etherdev(sizeof(struct igb_adapter));
-#endif /* HAVE_TX_MQ */
- if (!netdev)
- goto err_alloc_etherdev;
-
- SET_MODULE_OWNER(netdev);
- SET_NETDEV_DEV(netdev, &pdev->dev);
-
- pci_set_drvdata(pdev, netdev);
- adapter = netdev_priv(netdev);
- adapter->netdev = netdev;
- adapter->pdev = pdev;
- hw = &adapter->hw;
- hw->back = adapter;
- adapter->port_num = hw->bus.func;
- adapter->msg_enable = (1 << debug) - 1;
-
-#ifdef HAVE_PCI_ERS
- err = pci_save_state(pdev);
- if (err)
- goto err_ioremap;
-#endif
- err = -EIO;
- hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0));
- if (!hw->hw_addr)
- goto err_ioremap;
-
-#ifdef HAVE_NET_DEVICE_OPS
- netdev->netdev_ops = &igb_netdev_ops;
-#else /* HAVE_NET_DEVICE_OPS */
- netdev->open = &igb_open;
- netdev->stop = &igb_close;
- netdev->get_stats = &igb_get_stats;
-#ifdef HAVE_SET_RX_MODE
- netdev->set_rx_mode = &igb_set_rx_mode;
-#endif
- netdev->set_multicast_list = &igb_set_rx_mode;
- netdev->set_mac_address = &igb_set_mac;
- netdev->change_mtu = &igb_change_mtu;
- netdev->do_ioctl = &igb_ioctl;
-#ifdef HAVE_TX_TIMEOUT
- netdev->tx_timeout = &igb_tx_timeout;
-#endif
- netdev->vlan_rx_register = igb_vlan_mode;
- netdev->vlan_rx_add_vid = igb_vlan_rx_add_vid;
- netdev->vlan_rx_kill_vid = igb_vlan_rx_kill_vid;
-#ifdef CONFIG_NET_POLL_CONTROLLER
- netdev->poll_controller = igb_netpoll;
-#endif
- netdev->hard_start_xmit = &igb_xmit_frame;
-#endif /* HAVE_NET_DEVICE_OPS */
- igb_set_ethtool_ops(netdev);
-#ifdef HAVE_TX_TIMEOUT
- netdev->watchdog_timeo = 5 * HZ;
-#endif
-
- strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
-
- adapter->bd_number = cards_found;
-
- /* setup the private structure */
- err = igb_sw_init(adapter);
- if (err)
- goto err_sw_init;
-
- e1000_get_bus_info(hw);
-
- hw->phy.autoneg_wait_to_complete = FALSE;
- hw->mac.adaptive_ifs = FALSE;
-
- /* Copper options */
- if (hw->phy.media_type == e1000_media_type_copper) {
- hw->phy.mdix = AUTO_ALL_MODES;
- hw->phy.disable_polarity_correction = FALSE;
- hw->phy.ms_type = e1000_ms_hw_default;
- }
-
- if (e1000_check_reset_block(hw))
- dev_info(pci_dev_to_dev(pdev),
- "PHY reset is blocked due to SOL/IDER session.\n");
-
- /*
- * features is initialized to 0 in allocation, it might have bits
- * set by igb_sw_init so we should use an or instead of an
- * assignment.
- */
- netdev->features |= NETIF_F_SG |
- NETIF_F_IP_CSUM |
-#ifdef NETIF_F_IPV6_CSUM
- NETIF_F_IPV6_CSUM |
-#endif
-#ifdef NETIF_F_TSO
- NETIF_F_TSO |
-#ifdef NETIF_F_TSO6
- NETIF_F_TSO6 |
-#endif
-#endif /* NETIF_F_TSO */
-#ifdef NETIF_F_RXHASH
- NETIF_F_RXHASH |
-#endif
- NETIF_F_RXCSUM |
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
- NETIF_F_HW_VLAN_CTAG_RX |
- NETIF_F_HW_VLAN_CTAG_TX;
-#else
- NETIF_F_HW_VLAN_RX |
- NETIF_F_HW_VLAN_TX;
-#endif
-
- if (hw->mac.type >= e1000_82576)
- netdev->features |= NETIF_F_SCTP_CSUM;
-
-#ifdef HAVE_NDO_SET_FEATURES
- /* copy netdev features into list of user selectable features */
- netdev->hw_features |= netdev->features;
-#ifndef IGB_NO_LRO
-
- /* give us the option of enabling LRO later */
- netdev->hw_features |= NETIF_F_LRO;
-#endif
-#else
-#ifdef NETIF_F_GRO
-
- /* this is only needed on kernels prior to 2.6.39 */
- netdev->features |= NETIF_F_GRO;
-#endif
-#endif
-
- /* set this bit last since it cannot be part of hw_features */
-#ifdef NETIF_F_HW_VLAN_CTAG_FILTER
- netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
-#else
- netdev->features |= NETIF_F_HW_VLAN_FILTER;
-#endif
-
-#ifdef HAVE_NETDEV_VLAN_FEATURES
- netdev->vlan_features |= NETIF_F_TSO |
- NETIF_F_TSO6 |
- NETIF_F_IP_CSUM |
- NETIF_F_IPV6_CSUM |
- NETIF_F_SG;
-
-#endif
- if (pci_using_dac)
- netdev->features |= NETIF_F_HIGHDMA;
-
- adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
-#ifdef DEBUG
- if (adapter->dmac != IGB_DMAC_DISABLE)
- printk("%s: DMA Coalescing is enabled..\n", netdev->name);
-#endif
-
- /* before reading the NVM, reset the controller to put the device in a
- * known good starting state */
- e1000_reset_hw(hw);
-
- /* make sure the NVM is good */
- if (e1000_validate_nvm_checksum(hw) < 0) {
- dev_err(pci_dev_to_dev(pdev), "The NVM Checksum Is Not"
- " Valid\n");
- err = -EIO;
- goto err_eeprom;
- }
-
- /* copy the MAC address out of the NVM */
- if (e1000_read_mac_addr(hw))
- dev_err(pci_dev_to_dev(pdev), "NVM Read Error\n");
- memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
-#ifdef ETHTOOL_GPERMADDR
- memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len);
-
- if (!is_valid_ether_addr(netdev->perm_addr)) {
-#else
- if (!is_valid_ether_addr(netdev->dev_addr)) {
-#endif
- dev_err(pci_dev_to_dev(pdev), "Invalid MAC Address\n");
- err = -EIO;
- goto err_eeprom;
- }
-
- memcpy(&adapter->mac_table[0].addr, hw->mac.addr, netdev->addr_len);
- adapter->mac_table[0].queue = adapter->vfs_allocated_count;
- adapter->mac_table[0].state = (IGB_MAC_STATE_DEFAULT | IGB_MAC_STATE_IN_USE);
- igb_rar_set(adapter, 0);
-
- /* get firmware version for ethtool -i */
- igb_set_fw_version(adapter);
-
- /* Check if Media Autosense is enabled */
- if (hw->mac.type == e1000_82580)
- igb_init_mas(adapter);
-#ifdef HAVE_TIMER_SETUP
- timer_setup(&adapter->watchdog_timer, &igb_watchdog, 0);
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- timer_setup(&adapter->dma_err_timer, &igb_dma_err_timer, 0);
- timer_setup(&adapter->phy_info_timer, &igb_update_phy_info, 0);
-#else
- setup_timer(&adapter->watchdog_timer, &igb_watchdog,
- (unsigned long) adapter);
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- setup_timer(&adapter->dma_err_timer, &igb_dma_err_timer,
- (unsigned long) adapter);
- setup_timer(&adapter->phy_info_timer, &igb_update_phy_info,
- (unsigned long) adapter);
-#endif
-
- INIT_WORK(&adapter->reset_task, igb_reset_task);
- INIT_WORK(&adapter->watchdog_task, igb_watchdog_task);
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- INIT_WORK(&adapter->dma_err_task, igb_dma_err_task);
-
- /* Initialize link properties that are user-changeable */
- adapter->fc_autoneg = true;
- hw->mac.autoneg = true;
- hw->phy.autoneg_advertised = 0x2f;
-
- hw->fc.requested_mode = e1000_fc_default;
- hw->fc.current_mode = e1000_fc_default;
-
- e1000_validate_mdi_setting(hw);
-
- /* By default, support wake on port A */
- if (hw->bus.func == 0)
- adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
-
- /* Check the NVM for wake support for non-port A ports */
- if (hw->mac.type >= e1000_82580)
- hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
- NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
- &eeprom_data);
- else if (hw->bus.func == 1)
- e1000_read_nvm(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
-
- if (eeprom_data & IGB_EEPROM_APME)
- adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
-
- /* now that we have the eeprom settings, apply the special cases where
- * the eeprom may be wrong or the board simply won't support wake on
- * lan on a particular port */
- switch (pdev->device) {
- case E1000_DEV_ID_82575GB_QUAD_COPPER:
- adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
- break;
- case E1000_DEV_ID_82575EB_FIBER_SERDES:
- case E1000_DEV_ID_82576_FIBER:
- case E1000_DEV_ID_82576_SERDES:
- /* Wake events only supported on port A for dual fiber
- * regardless of eeprom setting */
- if (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_FUNC_1)
- adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
- break;
- case E1000_DEV_ID_82576_QUAD_COPPER:
- case E1000_DEV_ID_82576_QUAD_COPPER_ET2:
- /* if quad port adapter, disable WoL on all but port A */
- if (global_quad_port_a != 0)
- adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
- else
- adapter->flags |= IGB_FLAG_QUAD_PORT_A;
- /* Reset for multiple quad port adapters */
- if (++global_quad_port_a == 4)
- global_quad_port_a = 0;
- break;
- default:
- /* If the device can't wake, don't set software support */
- if (!device_can_wakeup(&adapter->pdev->dev))
- adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
- break;
- }
-
- /* initialize the wol settings based on the eeprom settings */
- if (adapter->flags & IGB_FLAG_WOL_SUPPORTED)
- adapter->wol |= E1000_WUFC_MAG;
-
- /* Some vendors want WoL disabled by default, but still supported */
- if ((hw->mac.type == e1000_i350) &&
- (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
- adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
- adapter->wol = 0;
- }
-
- device_set_wakeup_enable(pci_dev_to_dev(adapter->pdev),
- adapter->flags & IGB_FLAG_WOL_SUPPORTED);
-
- /* reset the hardware with the new settings */
- igb_reset(adapter);
- adapter->devrc = 0;
-
-#ifdef HAVE_I2C_SUPPORT
- /* Init the I2C interface */
- err = igb_init_i2c(adapter);
- if (err) {
- dev_err(&pdev->dev, "failed to init i2c interface\n");
- goto err_eeprom;
- }
-#endif /* HAVE_I2C_SUPPORT */
-
- /* let the f/w know that the h/w is now under the control of the
- * driver. */
- igb_get_hw_control(adapter);
-
- strncpy(netdev->name, "eth%d", IFNAMSIZ);
- err = register_netdev(netdev);
- if (err)
- goto err_register;
-
-#ifdef CONFIG_IGB_VMDQ_NETDEV
- err = igb_init_vmdq_netdevs(adapter);
- if (err)
- goto err_register;
-#endif
- /* carrier off reporting is important to ethtool even BEFORE open */
- netif_carrier_off(netdev);
-
-#ifdef IGB_DCA
- if (dca_add_requester(&pdev->dev) == E1000_SUCCESS) {
- adapter->flags |= IGB_FLAG_DCA_ENABLED;
- dev_info(pci_dev_to_dev(pdev), "DCA enabled\n");
- igb_setup_dca(adapter);
- }
-
-#endif
-#ifdef HAVE_PTP_1588_CLOCK
- /* do hw tstamp init after resetting */
- igb_ptp_init(adapter);
-#endif /* HAVE_PTP_1588_CLOCK */
-
- dev_info(pci_dev_to_dev(pdev), "Intel(R) Gigabit Ethernet Network Connection\n");
- /* print bus type/speed/width info */
- dev_info(pci_dev_to_dev(pdev), "%s: (PCIe:%s:%s) ",
- netdev->name,
- ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5GT/s" :
- (hw->bus.speed == e1000_bus_speed_5000) ? "5.0GT/s" :
- (hw->mac.type == e1000_i354) ? "integrated" :
- "unknown"),
- ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
- (hw->bus.width == e1000_bus_width_pcie_x2) ? "Width x2" :
- (hw->bus.width == e1000_bus_width_pcie_x1) ? "Width x1" :
- (hw->mac.type == e1000_i354) ? "integrated" :
- "unknown"));
- dev_info(pci_dev_to_dev(pdev), "%s: MAC: ", netdev->name);
- for (i = 0; i < 6; i++)
- printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':');
-
- ret_val = e1000_read_pba_string(hw, pba_str, E1000_PBANUM_LENGTH);
- if (ret_val)
- strncpy(pba_str, "Unknown", sizeof(pba_str) - 1);
- dev_info(pci_dev_to_dev(pdev), "%s: PBA No: %s\n", netdev->name,
- pba_str);
-
-
- /* Initialize the thermal sensor on i350 devices. */
- if (hw->mac.type == e1000_i350) {
- if (hw->bus.func == 0) {
- u16 ets_word;
-
- /*
- * Read the NVM to determine if this i350 device
- * supports an external thermal sensor.
- */
- e1000_read_nvm(hw, NVM_ETS_CFG, 1, &ets_word);
- if (ets_word != 0x0000 && ets_word != 0xFFFF)
- adapter->ets = true;
- else
- adapter->ets = false;
- }
-#ifdef IGB_HWMON
-
- igb_sysfs_init(adapter);
-#else
-#ifdef IGB_PROCFS
-
- igb_procfs_init(adapter);
-#endif /* IGB_PROCFS */
-#endif /* IGB_HWMON */
- } else {
- adapter->ets = false;
- }
-
- if (hw->phy.media_type == e1000_media_type_copper) {
- switch (hw->mac.type) {
- case e1000_i350:
- case e1000_i210:
- case e1000_i211:
- /* Enable EEE for internal copper PHY devices */
- err = e1000_set_eee_i350(hw);
- if (!err &&
- (adapter->flags & IGB_FLAG_EEE))
- adapter->eee_advert =
- MDIO_EEE_100TX | MDIO_EEE_1000T;
- break;
- case e1000_i354:
- if ((E1000_READ_REG(hw, E1000_CTRL_EXT)) &
- (E1000_CTRL_EXT_LINK_MODE_SGMII)) {
- err = e1000_set_eee_i354(hw);
- if ((!err) &&
- (adapter->flags & IGB_FLAG_EEE))
- adapter->eee_advert =
- MDIO_EEE_100TX | MDIO_EEE_1000T;
- }
- break;
- default:
- break;
- }
- }
-
- /* send driver version info to firmware */
- if (hw->mac.type >= e1000_i350)
- igb_init_fw(adapter);
-
-#ifndef IGB_NO_LRO
- if (netdev->features & NETIF_F_LRO)
- dev_info(pci_dev_to_dev(pdev), "Internal LRO is enabled \n");
- else
- dev_info(pci_dev_to_dev(pdev), "LRO is disabled \n");
-#endif
- dev_info(pci_dev_to_dev(pdev),
- "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
- adapter->msix_entries ? "MSI-X" :
- (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy",
- adapter->num_rx_queues, adapter->num_tx_queues);
-
- cards_found++;
-
- pm_runtime_put_noidle(&pdev->dev);
- return 0;
-
-err_register:
- igb_release_hw_control(adapter);
-#ifdef HAVE_I2C_SUPPORT
- memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap));
-#endif /* HAVE_I2C_SUPPORT */
-err_eeprom:
- if (!e1000_check_reset_block(hw))
- e1000_phy_hw_reset(hw);
-
- if (hw->flash_address)
- iounmap(hw->flash_address);
-err_sw_init:
- igb_clear_interrupt_scheme(adapter);
- igb_reset_sriov_capability(adapter);
- iounmap(hw->hw_addr);
-err_ioremap:
- free_netdev(netdev);
-err_alloc_etherdev:
- pci_release_selected_regions(pdev,
- pci_select_bars(pdev, IORESOURCE_MEM));
-err_pci_reg:
-err_dma:
- pci_disable_device(pdev);
- return err;
-}
-#ifdef HAVE_I2C_SUPPORT
-/*
- * igb_remove_i2c - Cleanup I2C interface
- * @adapter: pointer to adapter structure
- *
- */
-static void igb_remove_i2c(struct igb_adapter *adapter)
-{
-
- /* free the adapter bus structure */
- i2c_del_adapter(&adapter->i2c_adap);
-}
-#endif /* HAVE_I2C_SUPPORT */
-
-/**
- * igb_remove - Device Removal Routine
- * @pdev: PCI device information struct
- *
- * igb_remove is called by the PCI subsystem to alert the driver
- * that it should release a PCI device. The could be caused by a
- * Hot-Plug event, or because the driver is going to be removed from
- * memory.
- **/
-static void __devexit igb_remove(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-
- pm_runtime_get_noresume(&pdev->dev);
-#ifdef HAVE_I2C_SUPPORT
- igb_remove_i2c(adapter);
-#endif /* HAVE_I2C_SUPPORT */
-#ifdef HAVE_PTP_1588_CLOCK
- igb_ptp_stop(adapter);
-#endif /* HAVE_PTP_1588_CLOCK */
-
- /* flush_scheduled work may reschedule our watchdog task, so
- * explicitly disable watchdog tasks from being rescheduled */
- set_bit(__IGB_DOWN, &adapter->state);
- del_timer_sync(&adapter->watchdog_timer);
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- del_timer_sync(&adapter->dma_err_timer);
- del_timer_sync(&adapter->phy_info_timer);
-
- flush_scheduled_work();
-
-#ifdef IGB_DCA
- if (adapter->flags & IGB_FLAG_DCA_ENABLED) {
- dev_info(pci_dev_to_dev(pdev), "DCA disabled\n");
- dca_remove_requester(&pdev->dev);
- adapter->flags &= ~IGB_FLAG_DCA_ENABLED;
- E1000_WRITE_REG(hw, E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_DISABLE);
- }
-#endif
-
- /* Release control of h/w to f/w. If f/w is AMT enabled, this
- * would have already happened in close and is redundant. */
- igb_release_hw_control(adapter);
-
- unregister_netdev(netdev);
-#ifdef CONFIG_IGB_VMDQ_NETDEV
- igb_remove_vmdq_netdevs(adapter);
-#endif
-
- igb_clear_interrupt_scheme(adapter);
- igb_reset_sriov_capability(adapter);
-
- iounmap(hw->hw_addr);
- if (hw->flash_address)
- iounmap(hw->flash_address);
- pci_release_selected_regions(pdev,
- pci_select_bars(pdev, IORESOURCE_MEM));
-
-#ifdef IGB_HWMON
- igb_sysfs_exit(adapter);
-#else
-#ifdef IGB_PROCFS
- igb_procfs_exit(adapter);
-#endif /* IGB_PROCFS */
-#endif /* IGB_HWMON */
- kfree(adapter->mac_table);
- kfree(adapter->shadow_vfta);
- free_netdev(netdev);
-
- pci_disable_pcie_error_reporting(pdev);
-
- pci_disable_device(pdev);
-}
-
-/**
- * igb_sw_init - Initialize general software structures (struct igb_adapter)
- * @adapter: board private structure to initialize
- *
- * igb_sw_init initializes the Adapter private data structure.
- * Fields are initialized based on PCI device information and
- * OS network device settings (MTU size).
- **/
-static int igb_sw_init(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
-
- /* PCI config space info */
-
- hw->vendor_id = pdev->vendor;
- hw->device_id = pdev->device;
- hw->subsystem_vendor_id = pdev->subsystem_vendor;
- hw->subsystem_device_id = pdev->subsystem_device;
-
- pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
-
- pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word);
-
- /* set default ring sizes */
- adapter->tx_ring_count = IGB_DEFAULT_TXD;
- adapter->rx_ring_count = IGB_DEFAULT_RXD;
-
- /* set default work limits */
- adapter->tx_work_limit = IGB_DEFAULT_TX_WORK;
-
- adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN +
- VLAN_HLEN;
-
- /* Initialize the hardware-specific values */
- if (e1000_setup_init_funcs(hw, TRUE)) {
- dev_err(pci_dev_to_dev(pdev), "Hardware Initialization Failure\n");
- return -EIO;
- }
-
- adapter->mac_table = kzalloc(sizeof(struct igb_mac_addr) *
- hw->mac.rar_entry_count,
- GFP_ATOMIC);
-
- /* Setup and initialize a copy of the hw vlan table array */
- adapter->shadow_vfta = kzalloc(sizeof(u32) * E1000_VFTA_ENTRIES,
- GFP_ATOMIC);
-#ifdef NO_KNI
- /* These calls may decrease the number of queues */
- if (hw->mac.type < e1000_i210) {
- igb_set_sriov_capability(adapter);
- }
-
- if (igb_init_interrupt_scheme(adapter, true)) {
- dev_err(pci_dev_to_dev(pdev), "Unable to allocate memory for queues\n");
- return -ENOMEM;
- }
-
- /* Explicitly disable IRQ since the NIC can be in any state. */
- igb_irq_disable(adapter);
-
- set_bit(__IGB_DOWN, &adapter->state);
-#endif
- return 0;
-}
-
-/**
- * igb_open - Called when a network interface is made active
- * @netdev: network interface device structure
- *
- * Returns 0 on success, negative value on failure
- *
- * The open entry point is called when a network interface is made
- * active by the system (IFF_UP). At this point all resources needed
- * for transmit and receive operations are allocated, the interrupt
- * 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, bool resuming)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-#ifdef CONFIG_PM_RUNTIME
- struct pci_dev *pdev = adapter->pdev;
-#endif /* CONFIG_PM_RUNTIME */
- int err;
- int i;
-
- /* disallow open during test */
- if (test_bit(__IGB_TESTING, &adapter->state)) {
- WARN_ON(resuming);
- return -EBUSY;
- }
-
-#ifdef CONFIG_PM_RUNTIME
- if (!resuming)
- pm_runtime_get_sync(&pdev->dev);
-#endif /* CONFIG_PM_RUNTIME */
-
- netif_carrier_off(netdev);
-
- /* allocate transmit descriptors */
- err = igb_setup_all_tx_resources(adapter);
- if (err)
- goto err_setup_tx;
-
- /* allocate receive descriptors */
- err = igb_setup_all_rx_resources(adapter);
- if (err)
- goto err_setup_rx;
-
- igb_power_up_link(adapter);
-
- /* before we allocate an interrupt, we must be ready to handle it.
- * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
- * as soon as we call pci_request_irq, so we have to setup our
- * clean_rx handler before we do so. */
- igb_configure(adapter);
-
- err = igb_request_irq(adapter);
- if (err)
- goto err_req_irq;
-
- /* Notify the stack of the actual queue counts. */
- netif_set_real_num_tx_queues(netdev,
- adapter->vmdq_pools ? 1 :
- adapter->num_tx_queues);
-
- err = netif_set_real_num_rx_queues(netdev,
- adapter->vmdq_pools ? 1 :
- adapter->num_rx_queues);
- if (err)
- goto err_set_queues;
-
- /* From here on the code is the same as igb_up() */
- clear_bit(__IGB_DOWN, &adapter->state);
-
- for (i = 0; i < adapter->num_q_vectors; i++)
- napi_enable(&(adapter->q_vector[i]->napi));
- igb_configure_lli(adapter);
-
- /* Clear any pending interrupts. */
- E1000_READ_REG(hw, E1000_ICR);
-
- igb_irq_enable(adapter);
-
- /* notify VFs that reset has been completed */
- if (adapter->vfs_allocated_count) {
- u32 reg_data = E1000_READ_REG(hw, E1000_CTRL_EXT);
- reg_data |= E1000_CTRL_EXT_PFRSTD;
- E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg_data);
- }
-
- netif_tx_start_all_queues(netdev);
-
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- schedule_work(&adapter->dma_err_task);
-
- /* start the watchdog. */
- hw->mac.get_link_status = 1;
- schedule_work(&adapter->watchdog_task);
-
- return E1000_SUCCESS;
-
-err_set_queues:
- igb_free_irq(adapter);
-err_req_irq:
- igb_release_hw_control(adapter);
- igb_power_down_link(adapter);
- igb_free_all_rx_resources(adapter);
-err_setup_rx:
- igb_free_all_tx_resources(adapter);
-err_setup_tx:
- igb_reset(adapter);
-
-#ifdef CONFIG_PM_RUNTIME
- if (!resuming)
- pm_runtime_put(&pdev->dev);
-#endif /* CONFIG_PM_RUNTIME */
-
- 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
- *
- * Returns 0, this is not allowed to fail
- *
- * The close entry point is called when an interface is de-activated
- * by the OS. The hardware is still under the driver's control, but
- * 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, bool suspending)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
-#ifdef CONFIG_PM_RUNTIME
- struct pci_dev *pdev = adapter->pdev;
-#endif /* CONFIG_PM_RUNTIME */
-
- WARN_ON(test_bit(__IGB_RESETTING, &adapter->state));
-
-#ifdef CONFIG_PM_RUNTIME
- if (!suspending)
- pm_runtime_get_sync(&pdev->dev);
-#endif /* CONFIG_PM_RUNTIME */
-
- igb_down(adapter);
-
- igb_release_hw_control(adapter);
-
- igb_free_irq(adapter);
-
- igb_free_all_tx_resources(adapter);
- igb_free_all_rx_resources(adapter);
-
-#ifdef CONFIG_PM_RUNTIME
- if (!suspending)
- pm_runtime_put_sync(&pdev->dev);
-#endif /* CONFIG_PM_RUNTIME */
-
- 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
- *
- * Return 0 on success, negative on failure
- **/
-int igb_setup_tx_resources(struct igb_ring *tx_ring)
-{
- struct device *dev = tx_ring->dev;
- int size;
-
- size = sizeof(struct igb_tx_buffer) * tx_ring->count;
- tx_ring->tx_buffer_info = vzalloc(size);
- if (!tx_ring->tx_buffer_info)
- goto err;
-
- /* round up to nearest 4K */
- tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
- tx_ring->size = ALIGN(tx_ring->size, 4096);
-
- tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
- &tx_ring->dma, GFP_KERNEL);
-
- if (!tx_ring->desc)
- goto err;
-
- tx_ring->next_to_use = 0;
- tx_ring->next_to_clean = 0;
-
- return 0;
-
-err:
- vfree(tx_ring->tx_buffer_info);
- dev_err(dev,
- "Unable to allocate memory for the transmit descriptor ring\n");
- return -ENOMEM;
-}
-
-/**
- * igb_setup_all_tx_resources - wrapper to allocate Tx resources
- * (Descriptors) for all queues
- * @adapter: board private structure
- *
- * Return 0 on success, negative on failure
- **/
-static int igb_setup_all_tx_resources(struct igb_adapter *adapter)
-{
- struct pci_dev *pdev = adapter->pdev;
- int i, err = 0;
-
- for (i = 0; i < adapter->num_tx_queues; i++) {
- err = igb_setup_tx_resources(adapter->tx_ring[i]);
- if (err) {
- dev_err(pci_dev_to_dev(pdev),
- "Allocation for Tx Queue %u failed\n", i);
- for (i--; i >= 0; i--)
- igb_free_tx_resources(adapter->tx_ring[i]);
- break;
- }
- }
-
- return err;
-}
-
-/**
- * igb_setup_tctl - configure the transmit control registers
- * @adapter: Board private structure
- **/
-void igb_setup_tctl(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 tctl;
-
- /* disable queue 0 which is enabled by default on 82575 and 82576 */
- E1000_WRITE_REG(hw, E1000_TXDCTL(0), 0);
-
- /* Program the Transmit Control Register */
- tctl = E1000_READ_REG(hw, E1000_TCTL);
- tctl &= ~E1000_TCTL_CT;
- tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
- (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
-
- e1000_config_collision_dist(hw);
-
- /* Enable transmits */
- tctl |= E1000_TCTL_EN;
-
- E1000_WRITE_REG(hw, E1000_TCTL, tctl);
-}
-
-static u32 igb_tx_wthresh(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- switch (hw->mac.type) {
- case e1000_i354:
- return 4;
- case e1000_82576:
- if (adapter->msix_entries)
- return 1;
- default:
- break;
- }
-
- return 16;
-}
-
-/**
- * igb_configure_tx_ring - Configure transmit ring after Reset
- * @adapter: board private structure
- * @ring: tx ring to configure
- *
- * Configure a transmit ring after a reset.
- **/
-void igb_configure_tx_ring(struct igb_adapter *adapter,
- struct igb_ring *ring)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 txdctl = 0;
- u64 tdba = ring->dma;
- int reg_idx = ring->reg_idx;
-
- /* disable the queue */
- E1000_WRITE_REG(hw, E1000_TXDCTL(reg_idx), 0);
- E1000_WRITE_FLUSH(hw);
- mdelay(10);
-
- E1000_WRITE_REG(hw, E1000_TDLEN(reg_idx),
- ring->count * sizeof(union e1000_adv_tx_desc));
- E1000_WRITE_REG(hw, E1000_TDBAL(reg_idx),
- tdba & 0x00000000ffffffffULL);
- E1000_WRITE_REG(hw, E1000_TDBAH(reg_idx), tdba >> 32);
-
- ring->tail = hw->hw_addr + E1000_TDT(reg_idx);
- E1000_WRITE_REG(hw, E1000_TDH(reg_idx), 0);
- writel(0, ring->tail);
-
- txdctl |= IGB_TX_PTHRESH;
- txdctl |= IGB_TX_HTHRESH << 8;
- txdctl |= igb_tx_wthresh(adapter) << 16;
-
- txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
- E1000_WRITE_REG(hw, E1000_TXDCTL(reg_idx), txdctl);
-}
-
-/**
- * igb_configure_tx - Configure transmit Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Tx unit of the MAC after a reset.
- **/
-static void igb_configure_tx(struct igb_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_tx_queues; i++)
- igb_configure_tx_ring(adapter, adapter->tx_ring[i]);
-}
-
-/**
- * igb_setup_rx_resources - allocate Rx resources (Descriptors)
- * @rx_ring: rx descriptor ring (for a specific queue) to setup
- *
- * Returns 0 on success, negative on failure
- **/
-int igb_setup_rx_resources(struct igb_ring *rx_ring)
-{
- struct device *dev = rx_ring->dev;
- int size, desc_len;
-
- size = sizeof(struct igb_rx_buffer) * rx_ring->count;
- rx_ring->rx_buffer_info = vzalloc(size);
- if (!rx_ring->rx_buffer_info)
- goto err;
-
- desc_len = sizeof(union e1000_adv_rx_desc);
-
- /* Round up to nearest 4K */
- rx_ring->size = rx_ring->count * desc_len;
- rx_ring->size = ALIGN(rx_ring->size, 4096);
-
- rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
- &rx_ring->dma, GFP_KERNEL);
-
- if (!rx_ring->desc)
- goto err;
-
- rx_ring->next_to_alloc = 0;
- rx_ring->next_to_clean = 0;
- rx_ring->next_to_use = 0;
-
- return 0;
-
-err:
- vfree(rx_ring->rx_buffer_info);
- rx_ring->rx_buffer_info = NULL;
- dev_err(dev, "Unable to allocate memory for the receive descriptor"
- " ring\n");
- return -ENOMEM;
-}
-
-/**
- * igb_setup_all_rx_resources - wrapper to allocate Rx resources
- * (Descriptors) for all queues
- * @adapter: board private structure
- *
- * Return 0 on success, negative on failure
- **/
-static int igb_setup_all_rx_resources(struct igb_adapter *adapter)
-{
- struct pci_dev *pdev = adapter->pdev;
- int i, err = 0;
-
- for (i = 0; i < adapter->num_rx_queues; i++) {
- err = igb_setup_rx_resources(adapter->rx_ring[i]);
- if (err) {
- dev_err(pci_dev_to_dev(pdev),
- "Allocation for Rx Queue %u failed\n", i);
- for (i--; i >= 0; i--)
- igb_free_rx_resources(adapter->rx_ring[i]);
- break;
- }
- }
-
- return err;
-}
-
-/**
- * igb_setup_mrqc - configure the multiple receive queue control registers
- * @adapter: Board private structure
- **/
-static void igb_setup_mrqc(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 mrqc, rxcsum;
- u32 j, num_rx_queues, shift = 0, shift2 = 0;
- static const u32 rsskey[10] = { 0xDA565A6D, 0xC20E5B25, 0x3D256741,
- 0xB08FA343, 0xCB2BCAD0, 0xB4307BAE,
- 0xA32DCB77, 0x0CF23080, 0x3BB7426A,
- 0xFA01ACBE };
-
- /* Fill out hash function seeds */
- for (j = 0; j < 10; j++)
- E1000_WRITE_REG(hw, E1000_RSSRK(j), rsskey[j]);
-
- num_rx_queues = adapter->rss_queues;
-
- /* 82575 and 82576 supports 2 RSS queues for VMDq */
- switch (hw->mac.type) {
- case e1000_82575:
- if (adapter->vmdq_pools) {
- shift = 2;
- shift2 = 6;
- break;
- }
- shift = 6;
- break;
- case e1000_82576:
- /* 82576 supports 2 RSS queues for SR-IOV */
- if (adapter->vfs_allocated_count || adapter->vmdq_pools) {
- shift = 3;
- num_rx_queues = 2;
- }
- break;
- default:
- break;
- }
-
- /*
- * Populate the redirection table 4 entries at a time. To do this
- * we are generating the results for n and n+2 and then interleaving
- * those with the results with n+1 and n+3.
- */
- for (j = 0; j < 32; j++) {
- /* first pass generates n and n+2 */
- u32 base = ((j * 0x00040004) + 0x00020000) * num_rx_queues;
- u32 reta = (base & 0x07800780) >> (7 - shift);
-
- /* second pass generates n+1 and n+3 */
- base += 0x00010001 * num_rx_queues;
- reta |= (base & 0x07800780) << (1 + shift);
-
- /* generate 2nd table for 82575 based parts */
- if (shift2)
- reta |= (0x01010101 * num_rx_queues) << shift2;
-
- E1000_WRITE_REG(hw, E1000_RETA(j), reta);
- }
-
- /*
- * Disable raw packet checksumming so that RSS hash is placed in
- * descriptor on writeback. No need to enable TCP/UDP/IP checksum
- * offloads as they are enabled by default
- */
- rxcsum = E1000_READ_REG(hw, E1000_RXCSUM);
- rxcsum |= E1000_RXCSUM_PCSD;
-
- if (adapter->hw.mac.type >= e1000_82576)
- /* Enable Receive Checksum Offload for SCTP */
- rxcsum |= E1000_RXCSUM_CRCOFL;
-
- /* Don't need to set TUOFL or IPOFL, they default to 1 */
- E1000_WRITE_REG(hw, E1000_RXCSUM, rxcsum);
-
- /* Generate RSS hash based on packet types, TCP/UDP
- * port numbers and/or IPv4/v6 src and dst addresses
- */
- mrqc = E1000_MRQC_RSS_FIELD_IPV4 |
- E1000_MRQC_RSS_FIELD_IPV4_TCP |
- E1000_MRQC_RSS_FIELD_IPV6 |
- E1000_MRQC_RSS_FIELD_IPV6_TCP |
- E1000_MRQC_RSS_FIELD_IPV6_TCP_EX;
-
- if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP)
- mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP;
- if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP)
- mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP;
-
- /* If VMDq is enabled then we set the appropriate mode for that, else
- * we default to RSS so that an RSS hash is calculated per packet even
- * if we are only using one queue */
- if (adapter->vfs_allocated_count || adapter->vmdq_pools) {
- if (hw->mac.type > e1000_82575) {
- /* Set the default pool for the PF's first queue */
- u32 vtctl = E1000_READ_REG(hw, E1000_VT_CTL);
- vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK |
- E1000_VT_CTL_DISABLE_DEF_POOL);
- vtctl |= adapter->vfs_allocated_count <<
- E1000_VT_CTL_DEFAULT_POOL_SHIFT;
- E1000_WRITE_REG(hw, E1000_VT_CTL, vtctl);
- } else if (adapter->rss_queues > 1) {
- /* set default queue for pool 1 to queue 2 */
- E1000_WRITE_REG(hw, E1000_VT_CTL,
- adapter->rss_queues << 7);
- }
- if (adapter->rss_queues > 1)
- mrqc |= E1000_MRQC_ENABLE_VMDQ_RSS_2Q;
- else
- mrqc |= E1000_MRQC_ENABLE_VMDQ;
- } else {
- mrqc |= E1000_MRQC_ENABLE_RSS_4Q;
- }
- igb_vmm_control(adapter);
-
- E1000_WRITE_REG(hw, E1000_MRQC, mrqc);
-}
-
-/**
- * igb_setup_rctl - configure the receive control registers
- * @adapter: Board private structure
- **/
-void igb_setup_rctl(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 rctl;
-
- rctl = E1000_READ_REG(hw, E1000_RCTL);
-
- rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
- rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
-
- rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF |
- (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
-
- /*
- * enable stripping of CRC. It's unlikely this will break BMC
- * redirection as it did with e1000. Newer features require
- * that the HW strips the CRC.
- */
- rctl |= E1000_RCTL_SECRC;
-
- /* disable store bad packets and clear size bits. */
- rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256);
-
- /* enable LPE to prevent packets larger than max_frame_size */
- rctl |= E1000_RCTL_LPE;
-
- /* disable queue 0 to prevent tail write w/o re-config */
- E1000_WRITE_REG(hw, E1000_RXDCTL(0), 0);
-
- /* Attention!!! For SR-IOV PF driver operations you must enable
- * queue drop for all VF and PF queues to prevent head of line blocking
- * if an un-trusted VF does not provide descriptors to hardware.
- */
- if (adapter->vfs_allocated_count) {
- /* set all queue drop enable bits */
- E1000_WRITE_REG(hw, E1000_QDE, ALL_QUEUES);
- }
-
- E1000_WRITE_REG(hw, E1000_RCTL, rctl);
-}
-
-static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size,
- int vfn)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 vmolr;
-
- /* if it isn't the PF check to see if VFs are enabled and
- * increase the size to support vlan tags */
- if (vfn < adapter->vfs_allocated_count &&
- adapter->vf_data[vfn].vlans_enabled)
- size += VLAN_HLEN;
-
-#ifdef CONFIG_IGB_VMDQ_NETDEV
- if (vfn >= adapter->vfs_allocated_count) {
- int queue = vfn - adapter->vfs_allocated_count;
- struct igb_vmdq_adapter *vadapter;
-
- vadapter = netdev_priv(adapter->vmdq_netdev[queue-1]);
- if (vadapter->vlgrp)
- size += VLAN_HLEN;
- }
-#endif
- vmolr = E1000_READ_REG(hw, E1000_VMOLR(vfn));
- vmolr &= ~E1000_VMOLR_RLPML_MASK;
- vmolr |= size | E1000_VMOLR_LPE;
- E1000_WRITE_REG(hw, E1000_VMOLR(vfn), vmolr);
-
- return 0;
-}
-
-/**
- * igb_rlpml_set - set maximum receive packet size
- * @adapter: board private structure
- *
- * Configure maximum receivable packet size.
- **/
-static void igb_rlpml_set(struct igb_adapter *adapter)
-{
- u32 max_frame_size = adapter->max_frame_size;
- struct e1000_hw *hw = &adapter->hw;
- u16 pf_id = adapter->vfs_allocated_count;
-
- if (adapter->vmdq_pools && hw->mac.type != e1000_82575) {
- int i;
- for (i = 0; i < adapter->vmdq_pools; i++)
- igb_set_vf_rlpml(adapter, max_frame_size, pf_id + i);
- /*
- * If we're in VMDQ or SR-IOV mode, then set global RLPML
- * to our max jumbo frame size, in case we need to enable
- * jumbo frames on one of the rings later.
- * This will not pass over-length frames into the default
- * queue because it's gated by the VMOLR.RLPML.
- */
- max_frame_size = MAX_JUMBO_FRAME_SIZE;
- }
- /* Set VF RLPML for the PF device. */
- if (adapter->vfs_allocated_count)
- igb_set_vf_rlpml(adapter, max_frame_size, pf_id);
-
- E1000_WRITE_REG(hw, E1000_RLPML, max_frame_size);
-}
-
-static inline void igb_set_vf_vlan_strip(struct igb_adapter *adapter,
- int vfn, bool enable)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 val;
- void __iomem *reg;
-
- if (hw->mac.type < e1000_82576)
- return;
-
- if (hw->mac.type == e1000_i350)
- reg = hw->hw_addr + E1000_DVMOLR(vfn);
- else
- reg = hw->hw_addr + E1000_VMOLR(vfn);
-
- val = readl(reg);
- if (enable)
- val |= E1000_VMOLR_STRVLAN;
- else
- val &= ~(E1000_VMOLR_STRVLAN);
- writel(val, reg);
-}
-static inline void igb_set_vmolr(struct igb_adapter *adapter,
- int vfn, bool aupe)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 vmolr;
-
- /*
- * This register exists only on 82576 and newer so if we are older then
- * we should exit and do nothing
- */
- if (hw->mac.type < e1000_82576)
- return;
-
- vmolr = E1000_READ_REG(hw, E1000_VMOLR(vfn));
-
- if (aupe)
- vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */
- else
- vmolr &= ~(E1000_VMOLR_AUPE); /* Tagged packets ONLY */
-
- /* clear all bits that might not be set */
- vmolr &= ~E1000_VMOLR_RSSE;
-
- if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count)
- vmolr |= E1000_VMOLR_RSSE; /* enable RSS */
-
- vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */
- vmolr |= E1000_VMOLR_LPE; /* Accept long packets */
-
- E1000_WRITE_REG(hw, E1000_VMOLR(vfn), vmolr);
-}
-
-/**
- * igb_configure_rx_ring - Configure a receive ring after Reset
- * @adapter: board private structure
- * @ring: receive ring to be configured
- *
- * Configure the Rx unit of the MAC after a reset.
- **/
-void igb_configure_rx_ring(struct igb_adapter *adapter,
- struct igb_ring *ring)
-{
- struct e1000_hw *hw = &adapter->hw;
- u64 rdba = ring->dma;
- int reg_idx = ring->reg_idx;
- u32 srrctl = 0, rxdctl = 0;
-
-#ifdef CONFIG_IGB_DISABLE_PACKET_SPLIT
- /*
- * RLPML prevents us from receiving a frame larger than max_frame so
- * it is safe to just set the rx_buffer_len to max_frame without the
- * risk of an skb over panic.
- */
- ring->rx_buffer_len = max_t(u32, adapter->max_frame_size,
- MAXIMUM_ETHERNET_VLAN_SIZE);
-
-#endif
- /* disable the queue */
- E1000_WRITE_REG(hw, E1000_RXDCTL(reg_idx), 0);
-
- /* Set DMA base address registers */
- E1000_WRITE_REG(hw, E1000_RDBAL(reg_idx),
- rdba & 0x00000000ffffffffULL);
- E1000_WRITE_REG(hw, E1000_RDBAH(reg_idx), rdba >> 32);
- E1000_WRITE_REG(hw, E1000_RDLEN(reg_idx),
- ring->count * sizeof(union e1000_adv_rx_desc));
-
- /* initialize head and tail */
- ring->tail = hw->hw_addr + E1000_RDT(reg_idx);
- E1000_WRITE_REG(hw, E1000_RDH(reg_idx), 0);
- writel(0, ring->tail);
-
- /* reset next-to- use/clean to place SW in sync with hardwdare */
- ring->next_to_clean = 0;
- ring->next_to_use = 0;
-#ifndef CONFIG_IGB_DISABLE_PACKET_SPLIT
- ring->next_to_alloc = 0;
-
-#endif
- /* set descriptor configuration */
-#ifndef CONFIG_IGB_DISABLE_PACKET_SPLIT
- srrctl = IGB_RX_HDR_LEN << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
- srrctl |= IGB_RX_BUFSZ >> E1000_SRRCTL_BSIZEPKT_SHIFT;
-#else /* CONFIG_IGB_DISABLE_PACKET_SPLIT */
- srrctl = ALIGN(ring->rx_buffer_len, 1024) >>
- E1000_SRRCTL_BSIZEPKT_SHIFT;
-#endif /* CONFIG_IGB_DISABLE_PACKET_SPLIT */
- srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
-#ifdef HAVE_PTP_1588_CLOCK
- if (hw->mac.type >= e1000_82580)
- srrctl |= E1000_SRRCTL_TIMESTAMP;
-#endif /* HAVE_PTP_1588_CLOCK */
- /*
- * We should set the drop enable bit if:
- * SR-IOV is enabled
- * or
- * Flow Control is disabled and number of RX queues > 1
- *
- * This allows us to avoid head of line blocking for security
- * and performance reasons.
- */
- if (adapter->vfs_allocated_count ||
- (adapter->num_rx_queues > 1 &&
- (hw->fc.requested_mode == e1000_fc_none ||
- hw->fc.requested_mode == e1000_fc_rx_pause)))
- srrctl |= E1000_SRRCTL_DROP_EN;
-
- E1000_WRITE_REG(hw, E1000_SRRCTL(reg_idx), srrctl);
-
- /* set filtering for VMDQ pools */
- igb_set_vmolr(adapter, reg_idx & 0x7, true);
-
- rxdctl |= IGB_RX_PTHRESH;
- rxdctl |= IGB_RX_HTHRESH << 8;
- rxdctl |= IGB_RX_WTHRESH << 16;
-
- /* enable receive descriptor fetching */
- rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
- E1000_WRITE_REG(hw, E1000_RXDCTL(reg_idx), rxdctl);
-}
-
-/**
- * igb_configure_rx - Configure receive Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Rx unit of the MAC after a reset.
- **/
-static void igb_configure_rx(struct igb_adapter *adapter)
-{
- int i;
-
- /* set UTA to appropriate mode */
- igb_set_uta(adapter);
-
- igb_full_sync_mac_table(adapter);
- /* Setup the HW Rx Head and Tail Descriptor Pointers and
- * the Base and Length of the Rx Descriptor Ring */
- for (i = 0; i < adapter->num_rx_queues; i++)
- igb_configure_rx_ring(adapter, adapter->rx_ring[i]);
-}
-
-/**
- * igb_free_tx_resources - Free Tx Resources per Queue
- * @tx_ring: Tx descriptor ring for a specific queue
- *
- * Free all transmit software resources
- **/
-void igb_free_tx_resources(struct igb_ring *tx_ring)
-{
- igb_clean_tx_ring(tx_ring);
-
- vfree(tx_ring->tx_buffer_info);
- tx_ring->tx_buffer_info = NULL;
-
- /* if not set, then don't free */
- if (!tx_ring->desc)
- return;
-
- dma_free_coherent(tx_ring->dev, tx_ring->size,
- tx_ring->desc, tx_ring->dma);
-
- tx_ring->desc = NULL;
-}
-
-/**
- * igb_free_all_tx_resources - Free Tx Resources for All Queues
- * @adapter: board private structure
- *
- * Free all transmit software resources
- **/
-static void igb_free_all_tx_resources(struct igb_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_tx_queues; i++)
- igb_free_tx_resources(adapter->tx_ring[i]);
-}
-
-void igb_unmap_and_free_tx_resource(struct igb_ring *ring,
- struct igb_tx_buffer *tx_buffer)
-{
- if (tx_buffer->skb) {
- dev_kfree_skb_any(tx_buffer->skb);
- if (dma_unmap_len(tx_buffer, len))
- dma_unmap_single(ring->dev,
- dma_unmap_addr(tx_buffer, dma),
- dma_unmap_len(tx_buffer, len),
- DMA_TO_DEVICE);
- } else if (dma_unmap_len(tx_buffer, len)) {
- dma_unmap_page(ring->dev,
- dma_unmap_addr(tx_buffer, dma),
- dma_unmap_len(tx_buffer, len),
- DMA_TO_DEVICE);
- }
- tx_buffer->next_to_watch = NULL;
- tx_buffer->skb = NULL;
- dma_unmap_len_set(tx_buffer, len, 0);
- /* buffer_info must be completely set up in the transmit path */
-}
-
-/**
- * igb_clean_tx_ring - Free Tx Buffers
- * @tx_ring: ring to be cleaned
- **/
-static void igb_clean_tx_ring(struct igb_ring *tx_ring)
-{
- struct igb_tx_buffer *buffer_info;
- unsigned long size;
- u16 i;
-
- if (!tx_ring->tx_buffer_info)
- return;
- /* Free all the Tx ring sk_buffs */
-
- for (i = 0; i < tx_ring->count; i++) {
- 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);
-
- /* Zero out the descriptor ring */
- memset(tx_ring->desc, 0, tx_ring->size);
-
- tx_ring->next_to_use = 0;
- tx_ring->next_to_clean = 0;
-}
-
-/**
- * igb_clean_all_tx_rings - Free Tx Buffers for all queues
- * @adapter: board private structure
- **/
-static void igb_clean_all_tx_rings(struct igb_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_tx_queues; i++)
- igb_clean_tx_ring(adapter->tx_ring[i]);
-}
-
-/**
- * igb_free_rx_resources - Free Rx Resources
- * @rx_ring: ring to clean the resources from
- *
- * Free all receive software resources
- **/
-void igb_free_rx_resources(struct igb_ring *rx_ring)
-{
- igb_clean_rx_ring(rx_ring);
-
- vfree(rx_ring->rx_buffer_info);
- rx_ring->rx_buffer_info = NULL;
-
- /* if not set, then don't free */
- if (!rx_ring->desc)
- return;
-
- dma_free_coherent(rx_ring->dev, rx_ring->size,
- rx_ring->desc, rx_ring->dma);
-
- rx_ring->desc = NULL;
-}
-
-/**
- * igb_free_all_rx_resources - Free Rx Resources for All Queues
- * @adapter: board private structure
- *
- * Free all receive software resources
- **/
-static void igb_free_all_rx_resources(struct igb_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_rx_queues; i++)
- igb_free_rx_resources(adapter->rx_ring[i]);
-}
-
-/**
- * igb_clean_rx_ring - Free Rx Buffers per Queue
- * @rx_ring: ring to free buffers from
- **/
-void igb_clean_rx_ring(struct igb_ring *rx_ring)
-{
- unsigned long size;
- u16 i;
-
- if (!rx_ring->rx_buffer_info)
- return;
-
-#ifndef CONFIG_IGB_DISABLE_PACKET_SPLIT
- if (rx_ring->skb)
- dev_kfree_skb(rx_ring->skb);
- rx_ring->skb = NULL;
-
-#endif
- /* Free all the Rx ring sk_buffs */
- for (i = 0; i < rx_ring->count; i++) {
- struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i];
-#ifdef CONFIG_IGB_DISABLE_PACKET_SPLIT
- if (buffer_info->dma) {
- dma_unmap_single(rx_ring->dev,
- buffer_info->dma,
- rx_ring->rx_buffer_len,
- DMA_FROM_DEVICE);
- buffer_info->dma = 0;
- }
-
- if (buffer_info->skb) {
- dev_kfree_skb(buffer_info->skb);
- buffer_info->skb = NULL;
- }
-#else
- if (!buffer_info->page)
- continue;
-
- dma_unmap_page(rx_ring->dev,
- buffer_info->dma,
- PAGE_SIZE,
- DMA_FROM_DEVICE);
- __free_page(buffer_info->page);
-
- buffer_info->page = NULL;
-#endif
- }
-
- size = sizeof(struct igb_rx_buffer) * rx_ring->count;
- memset(rx_ring->rx_buffer_info, 0, size);
-
- /* Zero out the descriptor ring */
- memset(rx_ring->desc, 0, rx_ring->size);
-
- rx_ring->next_to_alloc = 0;
- rx_ring->next_to_clean = 0;
- rx_ring->next_to_use = 0;
-}
-
-/**
- * igb_clean_all_rx_rings - Free Rx Buffers for all queues
- * @adapter: board private structure
- **/
-static void igb_clean_all_rx_rings(struct igb_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_rx_queues; i++)
- igb_clean_rx_ring(adapter->rx_ring[i]);
-}
-
-/**
- * igb_set_mac - Change the Ethernet Address of the NIC
- * @netdev: network interface device structure
- * @p: pointer to an address structure
- *
- * Returns 0 on success, negative on failure
- **/
-static int igb_set_mac(struct net_device *netdev, void *p)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct sockaddr *addr = p;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
-
- igb_del_mac_filter(adapter, hw->mac.addr,
- adapter->vfs_allocated_count);
- memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
- memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
-
- /* set the correct pool for the new PF MAC address in entry 0 */
- return igb_add_mac_filter(adapter, hw->mac.addr,
- adapter->vfs_allocated_count);
-}
-
-/**
- * igb_write_mc_addr_list - write multicast addresses to MTA
- * @netdev: network interface device structure
- *
- * Writes multicast address list to the MTA hash table.
- * Returns: -ENOMEM on failure
- * 0 on no addresses written
- * X on writing X addresses to MTA
- **/
-int igb_write_mc_addr_list(struct net_device *netdev)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-#ifdef NETDEV_HW_ADDR_T_MULTICAST
- struct netdev_hw_addr *ha;
-#else
- struct dev_mc_list *ha;
-#endif
- u8 *mta_list;
- int i, count;
-#ifdef CONFIG_IGB_VMDQ_NETDEV
- int vm;
-#endif
- count = netdev_mc_count(netdev);
-#ifdef CONFIG_IGB_VMDQ_NETDEV
- for (vm = 1; vm < adapter->vmdq_pools; vm++) {
- if (!adapter->vmdq_netdev[vm])
- break;
- if (!netif_running(adapter->vmdq_netdev[vm]))
- continue;
- count += netdev_mc_count(adapter->vmdq_netdev[vm]);
- }
-#endif
-
- if (!count) {
- e1000_update_mc_addr_list(hw, NULL, 0);
- return 0;
- }
- mta_list = kzalloc(count * 6, GFP_ATOMIC);
- if (!mta_list)
- return -ENOMEM;
-
- /* The shared function expects a packed array of only addresses. */
- i = 0;
- netdev_for_each_mc_addr(ha, netdev)
-#ifdef NETDEV_HW_ADDR_T_MULTICAST
- memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
-#else
- memcpy(mta_list + (i++ * ETH_ALEN), ha->dmi_addr, ETH_ALEN);
-#endif
-#ifdef CONFIG_IGB_VMDQ_NETDEV
- for (vm = 1; vm < adapter->vmdq_pools; vm++) {
- if (!adapter->vmdq_netdev[vm])
- break;
- if (!netif_running(adapter->vmdq_netdev[vm]) ||
- !netdev_mc_count(adapter->vmdq_netdev[vm]))
- continue;
- netdev_for_each_mc_addr(ha, adapter->vmdq_netdev[vm])
-#ifdef NETDEV_HW_ADDR_T_MULTICAST
- memcpy(mta_list + (i++ * ETH_ALEN),
- ha->addr, ETH_ALEN);
-#else
- memcpy(mta_list + (i++ * ETH_ALEN),
- ha->dmi_addr, ETH_ALEN);
-#endif
- }
-#endif
- e1000_update_mc_addr_list(hw, mta_list, i);
- kfree(mta_list);
-
- return count;
-}
-
-void igb_rar_set(struct igb_adapter *adapter, u32 index)
-{
- u32 rar_low, rar_high;
- struct e1000_hw *hw = &adapter->hw;
- u8 *addr = adapter->mac_table[index].addr;
- /* HW expects these in little endian so we reverse the byte order
- * from network order (big endian) to little endian
- */
- rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
- ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
- rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
-
- /* Indicate to hardware the Address is Valid. */
- if (adapter->mac_table[index].state & IGB_MAC_STATE_IN_USE)
- rar_high |= E1000_RAH_AV;
-
- if (hw->mac.type == e1000_82575)
- rar_high |= E1000_RAH_POOL_1 * adapter->mac_table[index].queue;
- else
- rar_high |= E1000_RAH_POOL_1 << adapter->mac_table[index].queue;
-
- E1000_WRITE_REG(hw, E1000_RAL(index), rar_low);
- E1000_WRITE_FLUSH(hw);
- E1000_WRITE_REG(hw, E1000_RAH(index), rar_high);
- E1000_WRITE_FLUSH(hw);
-}
-
-void igb_full_sync_mac_table(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- int i;
- for (i = 0; i < hw->mac.rar_entry_count; i++) {
- igb_rar_set(adapter, i);
- }
-}
-
-void igb_sync_mac_table(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- int i;
- for (i = 0; i < hw->mac.rar_entry_count; i++) {
- if (adapter->mac_table[i].state & IGB_MAC_STATE_MODIFIED)
- igb_rar_set(adapter, i);
- adapter->mac_table[i].state &= ~(IGB_MAC_STATE_MODIFIED);
- }
-}
-
-int igb_available_rars(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- int i, count = 0;
-
- for (i = 0; i < hw->mac.rar_entry_count; i++) {
- if (adapter->mac_table[i].state == 0)
- count++;
- }
- return count;
-}
-
-#ifdef HAVE_SET_RX_MODE
-/**
- * igb_write_uc_addr_list - write unicast addresses to RAR table
- * @netdev: network interface device structure
- *
- * Writes unicast address list to the RAR table.
- * Returns: -ENOMEM on failure/insufficient address space
- * 0 on no addresses written
- * X on writing X addresses to the RAR table
- **/
-static int igb_write_uc_addr_list(struct net_device *netdev)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- unsigned int vfn = adapter->vfs_allocated_count;
- int count = 0;
-
- /* return ENOMEM indicating insufficient memory for addresses */
- if (netdev_uc_count(netdev) > igb_available_rars(adapter))
- return -ENOMEM;
- if (!netdev_uc_empty(netdev)) {
-#ifdef NETDEV_HW_ADDR_T_UNICAST
- struct netdev_hw_addr *ha;
-#else
- struct dev_mc_list *ha;
-#endif
- netdev_for_each_uc_addr(ha, netdev) {
-#ifdef NETDEV_HW_ADDR_T_UNICAST
- igb_del_mac_filter(adapter, ha->addr, vfn);
- igb_add_mac_filter(adapter, ha->addr, vfn);
-#else
- igb_del_mac_filter(adapter, ha->da_addr, vfn);
- igb_add_mac_filter(adapter, ha->da_addr, vfn);
-#endif
- count++;
- }
- }
- return count;
-}
-
-#endif /* HAVE_SET_RX_MODE */
-/**
- * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
- * @netdev: network interface device structure
- *
- * The set_rx_mode entry point is called whenever the unicast or multicast
- * address lists or the network interface flags are updated. This routine is
- * responsible for configuring the hardware for proper unicast, multicast,
- * promiscuous mode, and all-multi behavior.
- **/
-static void igb_set_rx_mode(struct net_device *netdev)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- unsigned int vfn = adapter->vfs_allocated_count;
- u32 rctl, vmolr = 0;
- int count;
-
- /* Check for Promiscuous and All Multicast modes */
- rctl = E1000_READ_REG(hw, E1000_RCTL);
-
- /* clear the effected bits */
- rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE);
-
- if (netdev->flags & IFF_PROMISC) {
- rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
- vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME);
- /* retain VLAN HW filtering if in VT mode */
- if (adapter->vfs_allocated_count || adapter->vmdq_pools)
- rctl |= E1000_RCTL_VFE;
- } else {
- if (netdev->flags & IFF_ALLMULTI) {
- rctl |= E1000_RCTL_MPE;
- vmolr |= E1000_VMOLR_MPME;
- } else {
- /*
- * Write addresses to the MTA, if the attempt fails
- * then we should just turn on promiscuous mode so
- * that we can at least receive multicast traffic
- */
- count = igb_write_mc_addr_list(netdev);
- if (count < 0) {
- rctl |= E1000_RCTL_MPE;
- vmolr |= E1000_VMOLR_MPME;
- } else if (count) {
- vmolr |= E1000_VMOLR_ROMPE;
- }
- }
-#ifdef HAVE_SET_RX_MODE
- /*
- * Write addresses to available RAR registers, if there is not
- * sufficient space to store all the addresses then enable
- * unicast promiscuous mode
- */
- count = igb_write_uc_addr_list(netdev);
- if (count < 0) {
- rctl |= E1000_RCTL_UPE;
- vmolr |= E1000_VMOLR_ROPE;
- }
-#endif /* HAVE_SET_RX_MODE */
- rctl |= E1000_RCTL_VFE;
- }
- E1000_WRITE_REG(hw, E1000_RCTL, rctl);
-
- /*
- * In order to support SR-IOV and eventually VMDq it is necessary to set
- * the VMOLR to enable the appropriate modes. Without this workaround
- * we will have issues with VLAN tag stripping not being done for frames
- * that are only arriving because we are the default pool
- */
- if (hw->mac.type < e1000_82576)
- return;
-
- vmolr |= E1000_READ_REG(hw, E1000_VMOLR(vfn)) &
- ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE);
- E1000_WRITE_REG(hw, E1000_VMOLR(vfn), vmolr);
- igb_restore_vf_multicasts(adapter);
-}
-
-static void igb_check_wvbr(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 wvbr = 0;
-
- switch (hw->mac.type) {
- case e1000_82576:
- case e1000_i350:
- if (!(wvbr = E1000_READ_REG(hw, E1000_WVBR)))
- return;
- break;
- default:
- break;
- }
-
- adapter->wvbr |= wvbr;
-}
-
-#define IGB_STAGGERED_QUEUE_OFFSET 8
-
-static void igb_spoof_check(struct igb_adapter *adapter)
-{
- int j;
-
- if (!adapter->wvbr)
- return;
-
- switch (adapter->hw.mac.type) {
- case e1000_82576:
- for (j = 0; j < adapter->vfs_allocated_count; j++) {
- if (adapter->wvbr & (1 << j) ||
- adapter->wvbr & (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))) {
- DPRINTK(DRV, WARNING,
- "Spoof event(s) detected on VF %d\n", j);
- adapter->wvbr &=
- ~((1 << j) |
- (1 << (j + IGB_STAGGERED_QUEUE_OFFSET)));
- }
- }
- break;
- case e1000_i350:
- for (j = 0; j < adapter->vfs_allocated_count; j++) {
- if (adapter->wvbr & (1 << j)) {
- DPRINTK(DRV, WARNING,
- "Spoof event(s) detected on VF %d\n", j);
- adapter->wvbr &= ~(1 << j);
- }
- }
- break;
- default:
- break;
- }
-}
-
-/* Need to wait a few seconds after link up to get diagnostic information from
- * the phy */
-#ifdef HAVE_TIMER_SETUP
-static void igb_update_phy_info(struct timer_list *t)
-{
- struct igb_adapter *adapter = from_timer(adapter, t, phy_info_timer);
-#else
-static void igb_update_phy_info(unsigned long data)
-{
- struct igb_adapter *adapter = (struct igb_adapter *) data;
-#endif
- e1000_get_phy_info(&adapter->hw);
-}
-
-/**
- * igb_has_link - check shared code for link and determine up/down
- * @adapter: pointer to driver private info
- **/
-bool igb_has_link(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- bool link_active = FALSE;
-
- /* get_link_status is set on LSC (link status) interrupt or
- * rx sequence error interrupt. get_link_status will stay
- * false until the e1000_check_for_link establishes link
- * for copper adapters ONLY
- */
- switch (hw->phy.media_type) {
- case e1000_media_type_copper:
- if (!hw->mac.get_link_status)
- return true;
- case e1000_media_type_internal_serdes:
- e1000_check_for_link(hw);
- link_active = !hw->mac.get_link_status;
- break;
- case e1000_media_type_unknown:
- default:
- break;
- }
-
- if (((hw->mac.type == e1000_i210) ||
- (hw->mac.type == e1000_i211)) &&
- (hw->phy.id == I210_I_PHY_ID)) {
- if (!netif_carrier_ok(adapter->netdev)) {
- adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE;
- } else if (!(adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)) {
- adapter->flags |= IGB_FLAG_NEED_LINK_UPDATE;
- adapter->link_check_timeout = jiffies;
- }
- }
-
- return link_active;
-}
-
-/**
- * igb_watchdog - Timer Call-back
- * @data: pointer to adapter cast into an unsigned long
- **/
-#ifdef HAVE_TIMER_SETUP
-static void igb_watchdog(struct timer_list *t)
-{
- struct igb_adapter *adapter = from_timer(adapter, t, watchdog_timer);
-#else
-static void igb_watchdog(unsigned long data)
-{
- struct igb_adapter *adapter = (struct igb_adapter *)data;
-#endif
- /* Do the rest outside of interrupt context */
- schedule_work(&adapter->watchdog_task);
-}
-
-static void igb_watchdog_task(struct work_struct *work)
-{
- struct igb_adapter *adapter = container_of(work,
- struct igb_adapter,
- watchdog_task);
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- u32 link;
- int i;
- u32 thstat, ctrl_ext;
- u32 connsw;
-
- link = igb_has_link(adapter);
- /* Force link down if we have fiber to swap to */
- if (adapter->flags & IGB_FLAG_MAS_ENABLE) {
- if (hw->phy.media_type == e1000_media_type_copper) {
- connsw = E1000_READ_REG(hw, E1000_CONNSW);
- if (!(connsw & E1000_CONNSW_AUTOSENSE_EN))
- link = 0;
- }
- }
-
- if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) {
- if (time_after(jiffies, (adapter->link_check_timeout + HZ)))
- adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE;
- else
- link = FALSE;
- }
-
- if (link) {
- /* Perform a reset if the media type changed. */
- if (hw->dev_spec._82575.media_changed) {
- hw->dev_spec._82575.media_changed = false;
- adapter->flags |= IGB_FLAG_MEDIA_RESET;
- igb_reset(adapter);
- }
-
- /* Cancel scheduled suspend requests. */
- pm_runtime_resume(netdev->dev.parent);
-
- if (!netif_carrier_ok(netdev)) {
- u32 ctrl;
- e1000_get_speed_and_duplex(hw,
- &adapter->link_speed,
- &adapter->link_duplex);
-
- ctrl = E1000_READ_REG(hw, E1000_CTRL);
- /* Links status message must follow this format */
- printk(KERN_INFO "igb: %s NIC Link is Up %d Mbps %s, "
- "Flow Control: %s\n",
- netdev->name,
- adapter->link_speed,
- adapter->link_duplex == FULL_DUPLEX ?
- "Full Duplex" : "Half Duplex",
- ((ctrl & E1000_CTRL_TFCE) &&
- (ctrl & E1000_CTRL_RFCE)) ? "RX/TX":
- ((ctrl & E1000_CTRL_RFCE) ? "RX" :
- ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None")));
- /* adjust timeout factor according to speed/duplex */
- adapter->tx_timeout_factor = 1;
- switch (adapter->link_speed) {
- case SPEED_10:
- adapter->tx_timeout_factor = 14;
- break;
- case SPEED_100:
- /* maybe add some timeout factor ? */
- break;
- default:
- break;
- }
-
- netif_carrier_on(netdev);
- netif_tx_wake_all_queues(netdev);
-
- igb_ping_all_vfs(adapter);
-#ifdef IFLA_VF_MAX
- igb_check_vf_rate_limit(adapter);
-#endif /* IFLA_VF_MAX */
-
- /* link state has changed, schedule phy info update */
- if (!test_bit(__IGB_DOWN, &adapter->state))
- mod_timer(&adapter->phy_info_timer,
- round_jiffies(jiffies + 2 * HZ));
- }
- } else {
- if (netif_carrier_ok(netdev)) {
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
- /* check for thermal sensor event on i350 */
- if (hw->mac.type == e1000_i350) {
- thstat = E1000_READ_REG(hw, E1000_THSTAT);
- ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
- if ((hw->phy.media_type ==
- e1000_media_type_copper) &&
- !(ctrl_ext &
- E1000_CTRL_EXT_LINK_MODE_SGMII)) {
- if (thstat & E1000_THSTAT_PWR_DOWN) {
- printk(KERN_ERR "igb: %s The "
- "network adapter was stopped "
- "because it overheated.\n",
- netdev->name);
- }
- if (thstat & E1000_THSTAT_LINK_THROTTLE) {
- printk(KERN_INFO
- "igb: %s The network "
- "adapter supported "
- "link speed "
- "was downshifted "
- "because it "
- "overheated.\n",
- netdev->name);
- }
- }
- }
-
- /* Links status message must follow this format */
- printk(KERN_INFO "igb: %s NIC Link is Down\n",
- netdev->name);
- netif_carrier_off(netdev);
- netif_tx_stop_all_queues(netdev);
-
- igb_ping_all_vfs(adapter);
-
- /* link state has changed, schedule phy info update */
- if (!test_bit(__IGB_DOWN, &adapter->state))
- mod_timer(&adapter->phy_info_timer,
- round_jiffies(jiffies + 2 * HZ));
- /* link is down, time to check for alternate media */
- if (adapter->flags & IGB_FLAG_MAS_ENABLE) {
- igb_check_swap_media(adapter);
- if (adapter->flags & IGB_FLAG_MEDIA_RESET) {
- schedule_work(&adapter->reset_task);
- /* return immediately */
- return;
- }
- }
- pm_schedule_suspend(netdev->dev.parent,
- MSEC_PER_SEC * 5);
-
- /* also check for alternate media here */
- } else if (!netif_carrier_ok(netdev) &&
- (adapter->flags & IGB_FLAG_MAS_ENABLE)) {
- hw->mac.ops.power_up_serdes(hw);
- igb_check_swap_media(adapter);
- if (adapter->flags & IGB_FLAG_MEDIA_RESET) {
- schedule_work(&adapter->reset_task);
- /* return immediately */
- return;
- }
- }
- }
-
- igb_update_stats(adapter);
-
- for (i = 0; i < adapter->num_tx_queues; i++) {
- struct igb_ring *tx_ring = adapter->tx_ring[i];
- if (!netif_carrier_ok(netdev)) {
- /* We've lost link, so the controller stops DMA,
- * but we've got queued Tx work that's never going
- * to get done, so reset controller to flush Tx.
- * (Do the reset outside of interrupt context). */
- if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) {
- adapter->tx_timeout_count++;
- schedule_work(&adapter->reset_task);
- /* return immediately since reset is imminent */
- return;
- }
- }
-
- /* Force detection of hung controller every watchdog period */
- set_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags);
- }
-
- /* Cause software interrupt to ensure rx ring is cleaned */
- if (adapter->msix_entries) {
- u32 eics = 0;
- for (i = 0; i < adapter->num_q_vectors; i++)
- eics |= adapter->q_vector[i]->eims_value;
- E1000_WRITE_REG(hw, E1000_EICS, eics);
- } else {
- E1000_WRITE_REG(hw, E1000_ICS, E1000_ICS_RXDMT0);
- }
-
- igb_spoof_check(adapter);
-
- /* Reset the timer */
- if (!test_bit(__IGB_DOWN, &adapter->state)) {
- if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)
- mod_timer(&adapter->watchdog_timer,
- round_jiffies(jiffies + HZ));
- else
- mod_timer(&adapter->watchdog_timer,
- round_jiffies(jiffies + 2 * HZ));
- }
-}
-
-static void igb_dma_err_task(struct work_struct *work)
-{
- struct igb_adapter *adapter = container_of(work,
- struct igb_adapter,
- dma_err_task);
- int vf;
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- u32 hgptc;
- u32 ciaa, ciad;
-
- hgptc = E1000_READ_REG(hw, E1000_HGPTC);
- if (hgptc) /* If incrementing then no need for the check below */
- goto dma_timer_reset;
- /*
- * Check to see if a bad DMA write target from an errant or
- * malicious VF has caused a PCIe error. If so then we can
- * issue a VFLR to the offending VF(s) and then resume without
- * requesting a full slot reset.
- */
-
- for (vf = 0; vf < adapter->vfs_allocated_count; vf++) {
- ciaa = (vf << 16) | 0x80000000;
- /* 32 bit read so align, we really want status at offset 6 */
- ciaa |= PCI_COMMAND;
- E1000_WRITE_REG(hw, E1000_CIAA, ciaa);
- ciad = E1000_READ_REG(hw, E1000_CIAD);
- ciaa &= 0x7FFFFFFF;
- /* disable debug mode asap after reading data */
- E1000_WRITE_REG(hw, E1000_CIAA, ciaa);
- /* Get the upper 16 bits which will be the PCI status reg */
- ciad >>= 16;
- if (ciad & (PCI_STATUS_REC_MASTER_ABORT |
- PCI_STATUS_REC_TARGET_ABORT |
- PCI_STATUS_SIG_SYSTEM_ERROR)) {
- netdev_err(netdev, "VF %d suffered error\n", vf);
- /* Issue VFLR */
- ciaa = (vf << 16) | 0x80000000;
- ciaa |= 0xA8;
- E1000_WRITE_REG(hw, E1000_CIAA, ciaa);
- ciad = 0x00008000; /* VFLR */
- E1000_WRITE_REG(hw, E1000_CIAD, ciad);
- ciaa &= 0x7FFFFFFF;
- E1000_WRITE_REG(hw, E1000_CIAA, ciaa);
- }
- }
-dma_timer_reset:
- /* Reset the timer */
- if (!test_bit(__IGB_DOWN, &adapter->state))
- mod_timer(&adapter->dma_err_timer,
- round_jiffies(jiffies + HZ / 10));
-}
-
-/**
- * igb_dma_err_timer - Timer Call-back
- * @data: pointer to adapter cast into an unsigned long
- **/
-#ifdef HAVE_TIMER_SETUP
-static void igb_dma_err_timer(struct timer_list *t)
-{
- struct igb_adapter *adapter = from_timer(adapter, t, dma_err_timer);
-#else
-static void igb_dma_err_timer(unsigned long data)
-{
- struct igb_adapter *adapter = (struct igb_adapter *)data;
-#endif
- /* Do the rest outside of interrupt context */
- schedule_work(&adapter->dma_err_task);
-}
-
-enum latency_range {
- lowest_latency = 0,
- low_latency = 1,
- bulk_latency = 2,
- latency_invalid = 255
-};
-
-/**
- * igb_update_ring_itr - update the dynamic ITR value based on packet size
- *
- * Stores a new ITR value based on strictly on packet size. This
- * algorithm is less sophisticated than that used in igb_update_itr,
- * due to the difficulty of synchronizing statistics across multiple
- * receive rings. The divisors and thresholds used by this function
- * were determined based on theoretical maximum wire speed and testing
- * data, in order to minimize response time while increasing bulk
- * throughput.
- * This functionality is controlled by the InterruptThrottleRate module
- * parameter (see igb_param.c)
- * NOTE: This function is called only when operating in a multiqueue
- * receive environment.
- * @q_vector: pointer to q_vector
- **/
-static void igb_update_ring_itr(struct igb_q_vector *q_vector)
-{
- int new_val = q_vector->itr_val;
- int avg_wire_size = 0;
- struct igb_adapter *adapter = q_vector->adapter;
- unsigned int packets;
-
- /* For non-gigabit speeds, just fix the interrupt rate at 4000
- * ints/sec - ITR timer value of 120 ticks.
- */
- switch (adapter->link_speed) {
- case SPEED_10:
- case SPEED_100:
- new_val = IGB_4K_ITR;
- goto set_itr_val;
- default:
- break;
- }
-
- packets = q_vector->rx.total_packets;
- if (packets)
- avg_wire_size = q_vector->rx.total_bytes / packets;
-
- packets = q_vector->tx.total_packets;
- if (packets)
- avg_wire_size = max_t(u32, avg_wire_size,
- q_vector->tx.total_bytes / packets);
-
- /* if avg_wire_size isn't set no work was done */
- if (!avg_wire_size)
- goto clear_counts;
-
- /* Add 24 bytes to size to account for CRC, preamble, and gap */
- avg_wire_size += 24;
-
- /* Don't starve jumbo frames */
- avg_wire_size = min(avg_wire_size, 3000);
-
- /* Give a little boost to mid-size frames */
- if ((avg_wire_size > 300) && (avg_wire_size < 1200))
- new_val = avg_wire_size / 3;
- else
- new_val = avg_wire_size / 2;
-
- /* conservative mode (itr 3) eliminates the lowest_latency setting */
- if (new_val < IGB_20K_ITR &&
- ((q_vector->rx.ring && adapter->rx_itr_setting == 3) ||
- (!q_vector->rx.ring && adapter->tx_itr_setting == 3)))
- new_val = IGB_20K_ITR;
-
-set_itr_val:
- if (new_val != q_vector->itr_val) {
- q_vector->itr_val = new_val;
- q_vector->set_itr = 1;
- }
-clear_counts:
- q_vector->rx.total_bytes = 0;
- q_vector->rx.total_packets = 0;
- q_vector->tx.total_bytes = 0;
- q_vector->tx.total_packets = 0;
-}
-
-/**
- * igb_update_itr - update the dynamic ITR value based on statistics
- * Stores a new ITR value based on packets and byte
- * counts during the last interrupt. The advantage of per interrupt
- * computation is faster updates and more accurate ITR for the current
- * traffic pattern. Constants in this function were computed
- * based on theoretical maximum wire speed and thresholds were set based
- * on testing data as well as attempting to minimize response time
- * while increasing bulk throughput.
- * this functionality is controlled by the InterruptThrottleRate module
- * parameter (see igb_param.c)
- * NOTE: These calculations are only valid when operating in a single-
- * queue environment.
- * @q_vector: pointer to q_vector
- * @ring_container: ring info to update the itr for
- **/
-static void igb_update_itr(struct igb_q_vector *q_vector,
- struct igb_ring_container *ring_container)
-{
- unsigned int packets = ring_container->total_packets;
- unsigned int bytes = ring_container->total_bytes;
- u8 itrval = ring_container->itr;
-
- /* no packets, exit with status unchanged */
- if (packets == 0)
- return;
-
- switch (itrval) {
- case lowest_latency:
- /* handle TSO and jumbo frames */
- if (bytes/packets > 8000)
- itrval = bulk_latency;
- else if ((packets < 5) && (bytes > 512))
- itrval = low_latency;
- break;
- case low_latency: /* 50 usec aka 20000 ints/s */
- if (bytes > 10000) {
- /* this if handles the TSO accounting */
- if (bytes/packets > 8000) {
- itrval = bulk_latency;
- } else if ((packets < 10) || ((bytes/packets) > 1200)) {
- itrval = bulk_latency;
- } else if (packets > 35) {
- itrval = lowest_latency;
- }
- } else if (bytes/packets > 2000) {
- itrval = bulk_latency;
- } else if (packets <= 2 && bytes < 512) {
- itrval = lowest_latency;
- }
- break;
- case bulk_latency: /* 250 usec aka 4000 ints/s */
- if (bytes > 25000) {
- if (packets > 35)
- itrval = low_latency;
- } else if (bytes < 1500) {
- itrval = low_latency;
- }
- break;
- }
-
- /* clear work counters since we have the values we need */
- ring_container->total_bytes = 0;
- ring_container->total_packets = 0;
-
- /* write updated itr to ring container */
- ring_container->itr = itrval;
-}
-
-static void igb_set_itr(struct igb_q_vector *q_vector)
-{
- struct igb_adapter *adapter = q_vector->adapter;
- u32 new_itr = q_vector->itr_val;
- u8 current_itr = 0;
-
- /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
- switch (adapter->link_speed) {
- case SPEED_10:
- case SPEED_100:
- current_itr = 0;
- new_itr = IGB_4K_ITR;
- goto set_itr_now;
- default:
- break;
- }
-
- igb_update_itr(q_vector, &q_vector->tx);
- igb_update_itr(q_vector, &q_vector->rx);
-
- current_itr = max(q_vector->rx.itr, q_vector->tx.itr);
-
- /* conservative mode (itr 3) eliminates the lowest_latency setting */
- if (current_itr == lowest_latency &&
- ((q_vector->rx.ring && adapter->rx_itr_setting == 3) ||
- (!q_vector->rx.ring && adapter->tx_itr_setting == 3)))
- current_itr = low_latency;
-
- switch (current_itr) {
- /* counts and packets in update_itr are dependent on these numbers */
- case lowest_latency:
- new_itr = IGB_70K_ITR; /* 70,000 ints/sec */
- break;
- case low_latency:
- new_itr = IGB_20K_ITR; /* 20,000 ints/sec */
- break;
- case bulk_latency:
- new_itr = IGB_4K_ITR; /* 4,000 ints/sec */
- break;
- default:
- break;
- }
-
-set_itr_now:
- if (new_itr != q_vector->itr_val) {
- /* this attempts to bias the interrupt rate towards Bulk
- * by adding intermediate steps when interrupt rate is
- * increasing */
- new_itr = new_itr > q_vector->itr_val ?
- max((new_itr * q_vector->itr_val) /
- (new_itr + (q_vector->itr_val >> 2)),
- new_itr) :
- new_itr;
- /* Don't write the value here; it resets the adapter's
- * internal timer, and causes us to delay far longer than
- * we should between interrupts. Instead, we write the ITR
- * value at the beginning of the next interrupt so the timing
- * ends up being correct.
- */
- q_vector->itr_val = new_itr;
- q_vector->set_itr = 1;
- }
-}
-
-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;
-
- context_desc = IGB_TX_CTXTDESC(tx_ring, i);
-
- i++;
- tx_ring->next_to_use = (i < tx_ring->count) ? i : 0;
-
- /* set bits to identify this as an advanced context descriptor */
- type_tucmd |= E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
-
- /* For 82575, context index must be unique per ring. */
- if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags))
- mss_l4len_idx |= tx_ring->reg_idx << 4;
-
- context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
- context_desc->seqnum_seed = 0;
- context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd);
- context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
-}
-
-static int igb_tso(struct igb_ring *tx_ring,
- struct igb_tx_buffer *first,
- u8 *hdr_len)
-{
-#ifdef NETIF_F_TSO
- struct sk_buff *skb = first->skb;
- u32 vlan_macip_lens, type_tucmd;
- u32 mss_l4len_idx, l4len;
-
- if (skb->ip_summed != CHECKSUM_PARTIAL)
- return 0;
-
- if (!skb_is_gso(skb))
-#endif /* NETIF_F_TSO */
- return 0;
-#ifdef NETIF_F_TSO
-
- if (skb_header_cloned(skb)) {
- int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
- if (err)
- return err;
- }
-
- /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
- type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP;
-
- if (first->protocol == __constant_htons(ETH_P_IP)) {
- struct iphdr *iph = ip_hdr(skb);
- iph->tot_len = 0;
- iph->check = 0;
- tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
- iph->daddr, 0,
- IPPROTO_TCP,
- 0);
- type_tucmd |= E1000_ADVTXD_TUCMD_IPV4;
- first->tx_flags |= IGB_TX_FLAGS_TSO |
- IGB_TX_FLAGS_CSUM |
- IGB_TX_FLAGS_IPV4;
-#ifdef NETIF_F_TSO6
- } else if (skb_is_gso_v6(skb)) {
- ipv6_hdr(skb)->payload_len = 0;
- tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
- &ipv6_hdr(skb)->daddr,
- 0, IPPROTO_TCP, 0);
- first->tx_flags |= IGB_TX_FLAGS_TSO |
- IGB_TX_FLAGS_CSUM;
-#endif
- }
-
- /* compute header lengths */
- l4len = tcp_hdrlen(skb);
- *hdr_len = skb_transport_offset(skb) + l4len;
-
- /* update gso size and bytecount with header size */
- first->gso_segs = skb_shinfo(skb)->gso_segs;
- first->bytecount += (first->gso_segs - 1) * *hdr_len;
-
- /* MSS L4LEN IDX */
- mss_l4len_idx = l4len << E1000_ADVTXD_L4LEN_SHIFT;
- mss_l4len_idx |= skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT;
-
- /* VLAN MACLEN IPLEN */
- vlan_macip_lens = skb_network_header_len(skb);
- vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT;
- vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK;
-
- igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx);
-
- return 1;
-#endif /* NETIF_F_TSO */
-}
-
-static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first)
-{
- struct sk_buff *skb = first->skb;
- u32 vlan_macip_lens = 0;
- u32 mss_l4len_idx = 0;
- u32 type_tucmd = 0;
-
- if (skb->ip_summed != CHECKSUM_PARTIAL) {
- if (!(first->tx_flags & IGB_TX_FLAGS_VLAN))
- return;
- } else {
- u8 nexthdr = 0;
- switch (first->protocol) {
- case __constant_htons(ETH_P_IP):
- vlan_macip_lens |= skb_network_header_len(skb);
- type_tucmd |= E1000_ADVTXD_TUCMD_IPV4;
- nexthdr = ip_hdr(skb)->protocol;
- break;
-#ifdef NETIF_F_IPV6_CSUM
- case __constant_htons(ETH_P_IPV6):
- vlan_macip_lens |= skb_network_header_len(skb);
- nexthdr = ipv6_hdr(skb)->nexthdr;
- break;
-#endif
- default:
- if (unlikely(net_ratelimit())) {
- dev_warn(tx_ring->dev,
- "partial checksum but proto=%x!\n",
- first->protocol);
- }
- break;
- }
-
- switch (nexthdr) {
- case IPPROTO_TCP:
- type_tucmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
- mss_l4len_idx = tcp_hdrlen(skb) <<
- E1000_ADVTXD_L4LEN_SHIFT;
- break;
-#ifdef HAVE_SCTP
- case IPPROTO_SCTP:
- type_tucmd |= E1000_ADVTXD_TUCMD_L4T_SCTP;
- mss_l4len_idx = sizeof(struct sctphdr) <<
- E1000_ADVTXD_L4LEN_SHIFT;
- break;
-#endif
- case IPPROTO_UDP:
- mss_l4len_idx = sizeof(struct udphdr) <<
- E1000_ADVTXD_L4LEN_SHIFT;
- break;
- default:
- if (unlikely(net_ratelimit())) {
- dev_warn(tx_ring->dev,
- "partial checksum but l4 proto=%x!\n",
- nexthdr);
- }
- break;
- }
-
- /* update TX checksum flag */
- first->tx_flags |= IGB_TX_FLAGS_CSUM;
- }
-
- vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT;
- vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK;
-
- igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx);
-}
-
-#define IGB_SET_FLAG(_input, _flag, _result) \
- ((_flag <= _result) ? \
- ((u32)(_input & _flag) * (_result / _flag)) : \
- ((u32)(_input & _flag) / (_flag / _result)))
-
-static u32 igb_tx_cmd_type(struct sk_buff *skb, u32 tx_flags)
-{
- /* set type for advanced descriptor with frame checksum insertion */
- u32 cmd_type = E1000_ADVTXD_DTYP_DATA |
- E1000_ADVTXD_DCMD_DEXT |
- E1000_ADVTXD_DCMD_IFCS;
-
- /* set HW vlan bit if vlan is present */
- cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_VLAN,
- (E1000_ADVTXD_DCMD_VLE));
-
- /* set segmentation bits for TSO */
- cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSO,
- (E1000_ADVTXD_DCMD_TSE));
-
- /* set timestamp bit if present */
- cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSTAMP,
- (E1000_ADVTXD_MAC_TSTAMP));
-
- return cmd_type;
-}
-
-static void igb_tx_olinfo_status(struct igb_ring *tx_ring,
- union e1000_adv_tx_desc *tx_desc,
- u32 tx_flags, unsigned int paylen)
-{
- u32 olinfo_status = paylen << E1000_ADVTXD_PAYLEN_SHIFT;
-
- /* 82575 requires a unique index per ring */
- if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags))
- olinfo_status |= tx_ring->reg_idx << 4;
-
- /* insert L4 checksum */
- olinfo_status |= IGB_SET_FLAG(tx_flags,
- IGB_TX_FLAGS_CSUM,
- (E1000_TXD_POPTS_TXSM << 8));
-
- /* insert IPv4 checksum */
- olinfo_status |= IGB_SET_FLAG(tx_flags,
- IGB_TX_FLAGS_IPV4,
- (E1000_TXD_POPTS_IXSM << 8));
-
- tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
-}
-
-static void igb_tx_map(struct igb_ring *tx_ring,
- struct igb_tx_buffer *first,
- const u8 hdr_len)
-{
- struct sk_buff *skb = first->skb;
- struct igb_tx_buffer *tx_buffer;
- union e1000_adv_tx_desc *tx_desc;
- struct skb_frag_struct *frag;
- dma_addr_t dma;
- unsigned int data_len, size;
- u32 tx_flags = first->tx_flags;
- u32 cmd_type = igb_tx_cmd_type(skb, tx_flags);
- u16 i = tx_ring->next_to_use;
-
- tx_desc = IGB_TX_DESC(tx_ring, i);
-
- igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, skb->len - hdr_len);
-
- size = skb_headlen(skb);
- data_len = skb->data_len;
-
- dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE);
-
- tx_buffer = first;
-
- for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
- if (dma_mapping_error(tx_ring->dev, dma))
- goto dma_error;
-
- /* record length, and DMA address */
- dma_unmap_len_set(tx_buffer, len, size);
- dma_unmap_addr_set(tx_buffer, dma, dma);
-
- tx_desc->read.buffer_addr = cpu_to_le64(dma);
-
- while (unlikely(size > IGB_MAX_DATA_PER_TXD)) {
- tx_desc->read.cmd_type_len =
- cpu_to_le32(cmd_type ^ IGB_MAX_DATA_PER_TXD);
-
- i++;
- tx_desc++;
- if (i == tx_ring->count) {
- tx_desc = IGB_TX_DESC(tx_ring, 0);
- i = 0;
- }
- tx_desc->read.olinfo_status = 0;
-
- dma += IGB_MAX_DATA_PER_TXD;
- size -= IGB_MAX_DATA_PER_TXD;
-
- tx_desc->read.buffer_addr = cpu_to_le64(dma);
- }
-
- if (likely(!data_len))
- break;
-
- tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size);
-
- i++;
- tx_desc++;
- if (i == tx_ring->count) {
- tx_desc = IGB_TX_DESC(tx_ring, 0);
- i = 0;
- }
- tx_desc->read.olinfo_status = 0;
-
- size = skb_frag_size(frag);
- data_len -= size;
-
- dma = skb_frag_dma_map(tx_ring->dev, frag, 0,
- size, DMA_TO_DEVICE);
-
- tx_buffer = &tx_ring->tx_buffer_info[i];
- }
-
- /* write last descriptor with RS and EOP bits */
- cmd_type |= size | IGB_TXD_DCMD;
- tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type);
-
- netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
- /* set the timestamp */
- first->time_stamp = jiffies;
-
- /*
- * Force memory writes to complete before letting h/w know there
- * are new descriptors to fetch. (Only applicable for weak-ordered
- * memory model archs, such as IA-64).
- *
- * We also need this memory barrier to make certain all of the
- * status bits have been updated before next_to_watch is written.
- */
- wmb();
-
- /* set next_to_watch value indicating a packet is present */
- first->next_to_watch = tx_desc;
-
- i++;
- if (i == tx_ring->count)
- i = 0;
-
- tx_ring->next_to_use = i;
-
- writel(i, tx_ring->tail);
-
- /* we need this if more than one processor can write to our tail
- * at a time, it syncronizes IO on IA64/Altix systems */
- mmiowb();
-
- return;
-
-dma_error:
- dev_err(tx_ring->dev, "TX DMA map failed\n");
-
- /* clear dma mappings for failed tx_buffer_info map */
- for (;;) {
- tx_buffer = &tx_ring->tx_buffer_info[i];
- igb_unmap_and_free_tx_resource(tx_ring, tx_buffer);
- if (tx_buffer == first)
- break;
- if (i == 0)
- i = tx_ring->count;
- i--;
- }
-
- tx_ring->next_to_use = i;
-}
-
-static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size)
-{
- struct net_device *netdev = netdev_ring(tx_ring);
-
- if (netif_is_multiqueue(netdev))
- netif_stop_subqueue(netdev, ring_queue_index(tx_ring));
- else
- netif_stop_queue(netdev);
-
- /* Herbert's original patch had:
- * smp_mb__after_netif_stop_queue();
- * but since that doesn't exist yet, just open code it. */
- smp_mb();
-
- /* We need to check again in a case another CPU has just
- * made room available. */
- if (igb_desc_unused(tx_ring) < size)
- return -EBUSY;
-
- /* A reprieve! */
- if (netif_is_multiqueue(netdev))
- netif_wake_subqueue(netdev, ring_queue_index(tx_ring));
- else
- netif_wake_queue(netdev);
-
- tx_ring->tx_stats.restart_queue++;
-
- return 0;
-}
-
-static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size)
-{
- if (igb_desc_unused(tx_ring) >= size)
- return 0;
- return __igb_maybe_stop_tx(tx_ring, size);
-}
-
-netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
- struct igb_ring *tx_ring)
-{
- struct igb_tx_buffer *first;
- int tso;
- u32 tx_flags = 0;
-#if PAGE_SIZE > IGB_MAX_DATA_PER_TXD
- unsigned short f;
-#endif
- u16 count = TXD_USE_COUNT(skb_headlen(skb));
- __be16 protocol = vlan_get_protocol(skb);
- u8 hdr_len = 0;
-
- /*
- * need: 1 descriptor per page * PAGE_SIZE/IGB_MAX_DATA_PER_TXD,
- * + 1 desc for skb_headlen/IGB_MAX_DATA_PER_TXD,
- * + 2 desc gap to keep tail from touching head,
- * + 1 desc for context descriptor,
- * otherwise try next time
- */
-#if PAGE_SIZE > IGB_MAX_DATA_PER_TXD
- for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
- count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
-#else
- count += skb_shinfo(skb)->nr_frags;
-#endif
- if (igb_maybe_stop_tx(tx_ring, count + 3)) {
- /* this is a hard error */
- return NETDEV_TX_BUSY;
- }
-
- /* record the location of the first descriptor for this packet */
- first = &tx_ring->tx_buffer_info[tx_ring->next_to_use];
- first->skb = skb;
- first->bytecount = skb->len;
- first->gso_segs = 1;
-
- skb_tx_timestamp(skb);
-
-#ifdef HAVE_PTP_1588_CLOCK
- if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
- struct igb_adapter *adapter = netdev_priv(tx_ring->netdev);
- if (!adapter->ptp_tx_skb) {
- skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
- tx_flags |= IGB_TX_FLAGS_TSTAMP;
-
- adapter->ptp_tx_skb = skb_get(skb);
- adapter->ptp_tx_start = jiffies;
- if (adapter->hw.mac.type == e1000_82576)
- schedule_work(&adapter->ptp_tx_work);
- }
- }
-#endif /* HAVE_PTP_1588_CLOCK */
-
- if (vlan_tx_tag_present(skb)) {
- tx_flags |= IGB_TX_FLAGS_VLAN;
- tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT);
- }
-
- /* record initial flags and protocol */
- first->tx_flags = tx_flags;
- first->protocol = protocol;
-
- tso = igb_tso(tx_ring, first, &hdr_len);
- if (tso < 0)
- goto out_drop;
- else if (!tso)
- igb_tx_csum(tx_ring, first);
-
- igb_tx_map(tx_ring, first, hdr_len);
-
-#ifndef HAVE_TRANS_START_IN_QUEUE
- netdev_ring(tx_ring)->trans_start = jiffies;
-
-#endif
- /* Make sure there is space in the ring for the next send. */
- igb_maybe_stop_tx(tx_ring, DESC_NEEDED);
-
- return NETDEV_TX_OK;
-
-out_drop:
- igb_unmap_and_free_tx_resource(tx_ring, first);
-
- return NETDEV_TX_OK;
-}
-
-#ifdef HAVE_TX_MQ
-static inline struct igb_ring *igb_tx_queue_mapping(struct igb_adapter *adapter,
- struct sk_buff *skb)
-{
- unsigned int r_idx = skb->queue_mapping;
-
- if (r_idx >= adapter->num_tx_queues)
- r_idx = r_idx % adapter->num_tx_queues;
-
- return adapter->tx_ring[r_idx];
-}
-#else
-#define igb_tx_queue_mapping(_adapter, _skb) (_adapter)->tx_ring[0]
-#endif
-
-static netdev_tx_t igb_xmit_frame(struct sk_buff *skb,
- struct net_device *netdev)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
-
- if (test_bit(__IGB_DOWN, &adapter->state)) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- if (skb->len <= 0) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- /*
- * The minimum packet size with TCTL.PSP set is 17 so pad the skb
- * in order to meet this minimum size requirement.
- */
- if (skb->len < 17) {
- if (skb_padto(skb, 17))
- return NETDEV_TX_OK;
- skb->len = 17;
- }
-
- return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb));
-}
-
-/**
- * igb_tx_timeout - Respond to a Tx Hang
- * @netdev: network interface device structure
- **/
-static void igb_tx_timeout(struct net_device *netdev)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-
- /* Do the reset outside of interrupt context */
- adapter->tx_timeout_count++;
-
- if (hw->mac.type >= e1000_82580)
- hw->dev_spec._82575.global_device_reset = true;
-
- schedule_work(&adapter->reset_task);
- E1000_WRITE_REG(hw, E1000_EICS,
- (adapter->eims_enable_mask & ~adapter->eims_other));
-}
-
-static void igb_reset_task(struct work_struct *work)
-{
- struct igb_adapter *adapter;
- adapter = container_of(work, struct igb_adapter, reset_task);
-
- igb_reinit_locked(adapter);
-}
-
-/**
- * igb_get_stats - Get System Network Statistics
- * @netdev: network interface device structure
- *
- * Returns the address of the device statistics structure.
- * The statistics are updated here and also from the timer callback.
- **/
-static struct net_device_stats *igb_get_stats(struct net_device *netdev)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
-
- if (!test_bit(__IGB_RESETTING, &adapter->state))
- igb_update_stats(adapter);
-
-#ifdef HAVE_NETDEV_STATS_IN_NETDEV
- /* only return the current stats */
- return &netdev->stats;
-#else
- /* only return the current stats */
- return &adapter->net_stats;
-#endif /* HAVE_NETDEV_STATS_IN_NETDEV */
-}
-
-/**
- * igb_change_mtu - Change the Maximum Transfer Unit
- * @netdev: network interface device structure
- * @new_mtu: new value for maximum frame size
- *
- * Returns 0 on success, negative on failure
- **/
-static int igb_change_mtu(struct net_device *netdev, int new_mtu)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct pci_dev *pdev = adapter->pdev;
- int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
-
- if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) {
- dev_err(pci_dev_to_dev(pdev), "Invalid MTU setting\n");
- return -EINVAL;
- }
-
-#define MAX_STD_JUMBO_FRAME_SIZE 9238
- if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
- dev_err(pci_dev_to_dev(pdev), "MTU > 9216 not supported.\n");
- return -EINVAL;
- }
-
- /* adjust max frame to be at least the size of a standard frame */
- if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
- max_frame = ETH_FRAME_LEN + ETH_FCS_LEN;
-
- while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
- usleep_range(1000, 2000);
-
- /* igb_down has a dependency on max_frame_size */
- adapter->max_frame_size = max_frame;
-
- if (netif_running(netdev))
- igb_down(adapter);
-
- dev_info(pci_dev_to_dev(pdev), "changing MTU from %d to %d\n",
- netdev->mtu, new_mtu);
- netdev->mtu = new_mtu;
- hw->dev_spec._82575.mtu = new_mtu;
-
- if (netif_running(netdev))
- igb_up(adapter);
- else
- igb_reset(adapter);
-
- clear_bit(__IGB_RESETTING, &adapter->state);
-
- return 0;
-}
-
-/**
- * igb_update_stats - Update the board statistics counters
- * @adapter: board private structure
- **/
-
-void igb_update_stats(struct igb_adapter *adapter)
-{
-#ifdef HAVE_NETDEV_STATS_IN_NETDEV
- struct net_device_stats *net_stats = &adapter->netdev->stats;
-#else
- struct net_device_stats *net_stats = &adapter->net_stats;
-#endif /* HAVE_NETDEV_STATS_IN_NETDEV */
- struct e1000_hw *hw = &adapter->hw;
-#ifdef HAVE_PCI_ERS
- struct pci_dev *pdev = adapter->pdev;
-#endif
- u32 reg, mpc;
- u16 phy_tmp;
- int i;
- u64 bytes, packets;
-#ifndef IGB_NO_LRO
- u32 flushed = 0, coal = 0;
- struct igb_q_vector *q_vector;
-#endif
-
-#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;
-#ifdef HAVE_PCI_ERS
- if (pci_channel_offline(pdev))
- return;
-
-#endif
-#ifndef IGB_NO_LRO
- for (i = 0; i < adapter->num_q_vectors; i++) {
- q_vector = adapter->q_vector[i];
- if (!q_vector)
- continue;
- flushed += q_vector->lrolist.stats.flushed;
- coal += q_vector->lrolist.stats.coal;
- }
- adapter->lro_stats.flushed = flushed;
- adapter->lro_stats.coal = coal;
-
-#endif
- bytes = 0;
- packets = 0;
- for (i = 0; i < adapter->num_rx_queues; i++) {
- u32 rqdpc_tmp = E1000_READ_REG(hw, E1000_RQDPC(i)) & 0x0FFF;
- struct igb_ring *ring = adapter->rx_ring[i];
- ring->rx_stats.drops += rqdpc_tmp;
- net_stats->rx_fifo_errors += rqdpc_tmp;
-#ifdef CONFIG_IGB_VMDQ_NETDEV
- if (!ring->vmdq_netdev) {
- bytes += ring->rx_stats.bytes;
- packets += ring->rx_stats.packets;
- }
-#else
- bytes += ring->rx_stats.bytes;
- packets += ring->rx_stats.packets;
-#endif
- }
-
- net_stats->rx_bytes = bytes;
- net_stats->rx_packets = packets;
-
- bytes = 0;
- packets = 0;
- for (i = 0; i < adapter->num_tx_queues; i++) {
- struct igb_ring *ring = adapter->tx_ring[i];
-#ifdef CONFIG_IGB_VMDQ_NETDEV
- if (!ring->vmdq_netdev) {
- bytes += ring->tx_stats.bytes;
- packets += ring->tx_stats.packets;
- }
-#else
- bytes += ring->tx_stats.bytes;
- packets += ring->tx_stats.packets;
-#endif
- }
- net_stats->tx_bytes = bytes;
- net_stats->tx_packets = packets;
-
- /* read stats registers */
- adapter->stats.crcerrs += E1000_READ_REG(hw, E1000_CRCERRS);
- adapter->stats.gprc += E1000_READ_REG(hw, E1000_GPRC);
- adapter->stats.gorc += E1000_READ_REG(hw, E1000_GORCL);
- E1000_READ_REG(hw, E1000_GORCH); /* clear GORCL */
- adapter->stats.bprc += E1000_READ_REG(hw, E1000_BPRC);
- adapter->stats.mprc += E1000_READ_REG(hw, E1000_MPRC);
- adapter->stats.roc += E1000_READ_REG(hw, E1000_ROC);
-
- adapter->stats.prc64 += E1000_READ_REG(hw, E1000_PRC64);
- adapter->stats.prc127 += E1000_READ_REG(hw, E1000_PRC127);
- adapter->stats.prc255 += E1000_READ_REG(hw, E1000_PRC255);
- adapter->stats.prc511 += E1000_READ_REG(hw, E1000_PRC511);
- adapter->stats.prc1023 += E1000_READ_REG(hw, E1000_PRC1023);
- adapter->stats.prc1522 += E1000_READ_REG(hw, E1000_PRC1522);
- adapter->stats.symerrs += E1000_READ_REG(hw, E1000_SYMERRS);
- adapter->stats.sec += E1000_READ_REG(hw, E1000_SEC);
-
- mpc = E1000_READ_REG(hw, E1000_MPC);
- adapter->stats.mpc += mpc;
- net_stats->rx_fifo_errors += mpc;
- adapter->stats.scc += E1000_READ_REG(hw, E1000_SCC);
- adapter->stats.ecol += E1000_READ_REG(hw, E1000_ECOL);
- adapter->stats.mcc += E1000_READ_REG(hw, E1000_MCC);
- adapter->stats.latecol += E1000_READ_REG(hw, E1000_LATECOL);
- adapter->stats.dc += E1000_READ_REG(hw, E1000_DC);
- adapter->stats.rlec += E1000_READ_REG(hw, E1000_RLEC);
- adapter->stats.xonrxc += E1000_READ_REG(hw, E1000_XONRXC);
- adapter->stats.xontxc += E1000_READ_REG(hw, E1000_XONTXC);
- adapter->stats.xoffrxc += E1000_READ_REG(hw, E1000_XOFFRXC);
- adapter->stats.xofftxc += E1000_READ_REG(hw, E1000_XOFFTXC);
- adapter->stats.fcruc += E1000_READ_REG(hw, E1000_FCRUC);
- adapter->stats.gptc += E1000_READ_REG(hw, E1000_GPTC);
- adapter->stats.gotc += E1000_READ_REG(hw, E1000_GOTCL);
- E1000_READ_REG(hw, E1000_GOTCH); /* clear GOTCL */
- adapter->stats.rnbc += E1000_READ_REG(hw, E1000_RNBC);
- adapter->stats.ruc += E1000_READ_REG(hw, E1000_RUC);
- adapter->stats.rfc += E1000_READ_REG(hw, E1000_RFC);
- adapter->stats.rjc += E1000_READ_REG(hw, E1000_RJC);
- adapter->stats.tor += E1000_READ_REG(hw, E1000_TORH);
- adapter->stats.tot += E1000_READ_REG(hw, E1000_TOTH);
- adapter->stats.tpr += E1000_READ_REG(hw, E1000_TPR);
-
- adapter->stats.ptc64 += E1000_READ_REG(hw, E1000_PTC64);
- adapter->stats.ptc127 += E1000_READ_REG(hw, E1000_PTC127);
- adapter->stats.ptc255 += E1000_READ_REG(hw, E1000_PTC255);
- adapter->stats.ptc511 += E1000_READ_REG(hw, E1000_PTC511);
- adapter->stats.ptc1023 += E1000_READ_REG(hw, E1000_PTC1023);
- adapter->stats.ptc1522 += E1000_READ_REG(hw, E1000_PTC1522);
-
- adapter->stats.mptc += E1000_READ_REG(hw, E1000_MPTC);
- adapter->stats.bptc += E1000_READ_REG(hw, E1000_BPTC);
-
- adapter->stats.tpt += E1000_READ_REG(hw, E1000_TPT);
- adapter->stats.colc += E1000_READ_REG(hw, E1000_COLC);
-
- adapter->stats.algnerrc += E1000_READ_REG(hw, E1000_ALGNERRC);
- /* read internal phy sepecific stats */
- reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
- if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) {
- adapter->stats.rxerrc += E1000_READ_REG(hw, E1000_RXERRC);
-
- /* this stat has invalid values on i210/i211 */
- if ((hw->mac.type != e1000_i210) &&
- (hw->mac.type != e1000_i211))
- adapter->stats.tncrs += E1000_READ_REG(hw, E1000_TNCRS);
- }
- adapter->stats.tsctc += E1000_READ_REG(hw, E1000_TSCTC);
- adapter->stats.tsctfc += E1000_READ_REG(hw, E1000_TSCTFC);
-
- adapter->stats.iac += E1000_READ_REG(hw, E1000_IAC);
- adapter->stats.icrxoc += E1000_READ_REG(hw, E1000_ICRXOC);
- adapter->stats.icrxptc += E1000_READ_REG(hw, E1000_ICRXPTC);
- adapter->stats.icrxatc += E1000_READ_REG(hw, E1000_ICRXATC);
- adapter->stats.ictxptc += E1000_READ_REG(hw, E1000_ICTXPTC);
- adapter->stats.ictxatc += E1000_READ_REG(hw, E1000_ICTXATC);
- adapter->stats.ictxqec += E1000_READ_REG(hw, E1000_ICTXQEC);
- adapter->stats.ictxqmtc += E1000_READ_REG(hw, E1000_ICTXQMTC);
- adapter->stats.icrxdmtc += E1000_READ_REG(hw, E1000_ICRXDMTC);
-
- /* Fill out the OS statistics structure */
- net_stats->multicast = adapter->stats.mprc;
- net_stats->collisions = adapter->stats.colc;
-
- /* Rx Errors */
-
- /* RLEC on some newer hardware can be incorrect so build
- * our own version based on RUC and ROC */
- net_stats->rx_errors = adapter->stats.rxerrc +
- adapter->stats.crcerrs + adapter->stats.algnerrc +
- adapter->stats.ruc + adapter->stats.roc +
- adapter->stats.cexterr;
- net_stats->rx_length_errors = adapter->stats.ruc +
- adapter->stats.roc;
- net_stats->rx_crc_errors = adapter->stats.crcerrs;
- net_stats->rx_frame_errors = adapter->stats.algnerrc;
- net_stats->rx_missed_errors = adapter->stats.mpc;
-
- /* Tx Errors */
- net_stats->tx_errors = adapter->stats.ecol +
- adapter->stats.latecol;
- net_stats->tx_aborted_errors = adapter->stats.ecol;
- net_stats->tx_window_errors = adapter->stats.latecol;
- net_stats->tx_carrier_errors = adapter->stats.tncrs;
-
- /* Tx Dropped needs to be maintained elsewhere */
-
- /* Phy Stats */
- if (hw->phy.media_type == e1000_media_type_copper) {
- if ((adapter->link_speed == SPEED_1000) &&
- (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
- phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
- adapter->phy_stats.idle_errors += phy_tmp;
- }
- }
-
- /* Management Stats */
- adapter->stats.mgptc += E1000_READ_REG(hw, E1000_MGTPTC);
- adapter->stats.mgprc += E1000_READ_REG(hw, E1000_MGTPRC);
- if (hw->mac.type > e1000_82580) {
- adapter->stats.o2bgptc += E1000_READ_REG(hw, E1000_O2BGPTC);
- adapter->stats.o2bspc += E1000_READ_REG(hw, E1000_O2BSPC);
- adapter->stats.b2ospc += E1000_READ_REG(hw, E1000_B2OSPC);
- adapter->stats.b2ogprc += E1000_READ_REG(hw, E1000_B2OGPRC);
- }
-}
-
-static irqreturn_t igb_msix_other(int irq, void *data)
-{
- struct igb_adapter *adapter = data;
- struct e1000_hw *hw = &adapter->hw;
- u32 icr = E1000_READ_REG(hw, E1000_ICR);
- /* reading ICR causes bit 31 of EICR to be cleared */
-
- if (icr & E1000_ICR_DRSTA)
- schedule_work(&adapter->reset_task);
-
- if (icr & E1000_ICR_DOUTSYNC) {
- /* HW is reporting DMA is out of sync */
- adapter->stats.doosync++;
- /* The DMA Out of Sync is also indication of a spoof event
- * in IOV mode. Check the Wrong VM Behavior register to
- * see if it is really a spoof event. */
- igb_check_wvbr(adapter);
- }
-
- /* Check for a mailbox event */
- if (icr & E1000_ICR_VMMB)
- igb_msg_task(adapter);
-
- if (icr & E1000_ICR_LSC) {
- hw->mac.get_link_status = 1;
- /* guard against interrupt when we're going down */
- if (!test_bit(__IGB_DOWN, &adapter->state))
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
- }
-
-#ifdef HAVE_PTP_1588_CLOCK
- if (icr & E1000_ICR_TS) {
- u32 tsicr = E1000_READ_REG(hw, E1000_TSICR);
-
- if (tsicr & E1000_TSICR_TXTS) {
- /* acknowledge the interrupt */
- E1000_WRITE_REG(hw, E1000_TSICR, E1000_TSICR_TXTS);
- /* retrieve hardware timestamp */
- schedule_work(&adapter->ptp_tx_work);
- }
- }
-#endif /* HAVE_PTP_1588_CLOCK */
-
- /* Check for MDD event */
- if (icr & E1000_ICR_MDDET)
- igb_process_mdd_event(adapter);
-
- E1000_WRITE_REG(hw, E1000_EIMS, adapter->eims_other);
-
- return IRQ_HANDLED;
-}
-
-static void igb_write_itr(struct igb_q_vector *q_vector)
-{
- struct igb_adapter *adapter = q_vector->adapter;
- u32 itr_val = q_vector->itr_val & 0x7FFC;
-
- if (!q_vector->set_itr)
- return;
-
- if (!itr_val)
- itr_val = 0x4;
-
- if (adapter->hw.mac.type == e1000_82575)
- itr_val |= itr_val << 16;
- else
- itr_val |= E1000_EITR_CNT_IGNR;
-
- writel(itr_val, q_vector->itr_register);
- q_vector->set_itr = 0;
-}
-
-static irqreturn_t igb_msix_ring(int irq, void *data)
-{
- struct igb_q_vector *q_vector = data;
-
- /* Write the ITR value calculated from the previous interrupt. */
- igb_write_itr(q_vector);
-
- napi_schedule(&q_vector->napi);
-
- return IRQ_HANDLED;
-}
-
-#ifdef IGB_DCA
-static void igb_update_tx_dca(struct igb_adapter *adapter,
- struct igb_ring *tx_ring,
- int cpu)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 txctrl = dca3_get_tag(tx_ring->dev, cpu);
-
- if (hw->mac.type != e1000_82575)
- txctrl <<= E1000_DCA_TXCTRL_CPUID_SHIFT_82576;
-
- /*
- * We can enable relaxed ordering for reads, but not writes when
- * DCA is enabled. This is due to a known issue in some chipsets
- * which will cause the DCA tag to be cleared.
- */
- txctrl |= E1000_DCA_TXCTRL_DESC_RRO_EN |
- E1000_DCA_TXCTRL_DATA_RRO_EN |
- E1000_DCA_TXCTRL_DESC_DCA_EN;
-
- E1000_WRITE_REG(hw, E1000_DCA_TXCTRL(tx_ring->reg_idx), txctrl);
-}
-
-static void igb_update_rx_dca(struct igb_adapter *adapter,
- struct igb_ring *rx_ring,
- int cpu)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 rxctrl = dca3_get_tag(&adapter->pdev->dev, cpu);
-
- if (hw->mac.type != e1000_82575)
- rxctrl <<= E1000_DCA_RXCTRL_CPUID_SHIFT_82576;
-
- /*
- * We can enable relaxed ordering for reads, but not writes when
- * DCA is enabled. This is due to a known issue in some chipsets
- * which will cause the DCA tag to be cleared.
- */
- rxctrl |= E1000_DCA_RXCTRL_DESC_RRO_EN |
- E1000_DCA_RXCTRL_DESC_DCA_EN;
-
- E1000_WRITE_REG(hw, E1000_DCA_RXCTRL(rx_ring->reg_idx), rxctrl);
-}
-
-static void igb_update_dca(struct igb_q_vector *q_vector)
-{
- struct igb_adapter *adapter = q_vector->adapter;
- int cpu = get_cpu();
-
- if (q_vector->cpu == cpu)
- goto out_no_update;
-
- if (q_vector->tx.ring)
- igb_update_tx_dca(adapter, q_vector->tx.ring, cpu);
-
- if (q_vector->rx.ring)
- igb_update_rx_dca(adapter, q_vector->rx.ring, cpu);
-
- q_vector->cpu = cpu;
-out_no_update:
- put_cpu();
-}
-
-static void igb_setup_dca(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- int i;
-
- if (!(adapter->flags & IGB_FLAG_DCA_ENABLED))
- return;
-
- /* Always use CB2 mode, difference is masked in the CB driver. */
- E1000_WRITE_REG(hw, E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2);
-
- for (i = 0; i < adapter->num_q_vectors; i++) {
- adapter->q_vector[i]->cpu = -1;
- igb_update_dca(adapter->q_vector[i]);
- }
-}
-
-static int __igb_notify_dca(struct device *dev, void *data)
-{
- struct net_device *netdev = dev_get_drvdata(dev);
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct pci_dev *pdev = adapter->pdev;
- struct e1000_hw *hw = &adapter->hw;
- unsigned long event = *(unsigned long *)data;
-
- switch (event) {
- case DCA_PROVIDER_ADD:
- /* if already enabled, don't do it again */
- if (adapter->flags & IGB_FLAG_DCA_ENABLED)
- break;
- if (dca_add_requester(dev) == E1000_SUCCESS) {
- adapter->flags |= IGB_FLAG_DCA_ENABLED;
- dev_info(pci_dev_to_dev(pdev), "DCA enabled\n");
- igb_setup_dca(adapter);
- break;
- }
- /* Fall Through since DCA is disabled. */
- case DCA_PROVIDER_REMOVE:
- if (adapter->flags & IGB_FLAG_DCA_ENABLED) {
- /* without this a class_device is left
- * hanging around in the sysfs model */
- dca_remove_requester(dev);
- dev_info(pci_dev_to_dev(pdev), "DCA disabled\n");
- adapter->flags &= ~IGB_FLAG_DCA_ENABLED;
- E1000_WRITE_REG(hw, E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_DISABLE);
- }
- break;
- }
-
- return E1000_SUCCESS;
-}
-
-static int igb_notify_dca(struct notifier_block *nb, unsigned long event,
- void *p)
-{
- int ret_val;
-
- ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event,
- __igb_notify_dca);
-
- return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
-}
-#endif /* IGB_DCA */
-
-static int igb_vf_configure(struct igb_adapter *adapter, int vf)
-{
- unsigned char mac_addr[ETH_ALEN];
-
- random_ether_addr(mac_addr);
- igb_set_vf_mac(adapter, vf, mac_addr);
-
-#ifdef IFLA_VF_MAX
-#ifdef HAVE_VF_SPOOFCHK_CONFIGURE
- /* By default spoof check is enabled for all VFs */
- adapter->vf_data[vf].spoofchk_enabled = true;
-#endif
-#endif
-
- return true;
-}
-
-static void igb_ping_all_vfs(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 ping;
- int i;
-
- for (i = 0 ; i < adapter->vfs_allocated_count; i++) {
- ping = E1000_PF_CONTROL_MSG;
- if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS)
- ping |= E1000_VT_MSGTYPE_CTS;
- e1000_write_mbx(hw, &ping, 1, i);
- }
-}
-
-/**
- * igb_mta_set_ - Set multicast filter table address
- * @adapter: pointer to the adapter structure
- * @hash_value: determines the MTA register and bit to set
- *
- * The multicast table address is a register array of 32-bit registers.
- * The hash_value is used to determine what register the bit is in, the
- * current value is read, the new bit is OR'd in and the new value is
- * written back into the register.
- **/
-void igb_mta_set(struct igb_adapter *adapter, u32 hash_value)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 hash_bit, hash_reg, mta;
-
- /*
- * The MTA is a register array of 32-bit registers. It is
- * treated like an array of (32*mta_reg_count) bits. We want to
- * set bit BitArray[hash_value]. So we figure out what register
- * the bit is in, read it, OR in the new bit, then write
- * back the new value. The (hw->mac.mta_reg_count - 1) serves as a
- * mask to bits 31:5 of the hash value which gives us the
- * register we're modifying. The hash bit within that register
- * is determined by the lower 5 bits of the hash value.
- */
- hash_reg = (hash_value >> 5) & (hw->mac.mta_reg_count - 1);
- hash_bit = hash_value & 0x1F;
-
- mta = E1000_READ_REG_ARRAY(hw, E1000_MTA, hash_reg);
-
- mta |= (1 << hash_bit);
-
- E1000_WRITE_REG_ARRAY(hw, E1000_MTA, hash_reg, mta);
- E1000_WRITE_FLUSH(hw);
-}
-
-static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf)
-{
-
- struct e1000_hw *hw = &adapter->hw;
- u32 vmolr = E1000_READ_REG(hw, E1000_VMOLR(vf));
- struct vf_data_storage *vf_data = &adapter->vf_data[vf];
-
- vf_data->flags &= ~(IGB_VF_FLAG_UNI_PROMISC |
- IGB_VF_FLAG_MULTI_PROMISC);
- vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME);
-
-#ifdef IGB_ENABLE_VF_PROMISC
- if (*msgbuf & E1000_VF_SET_PROMISC_UNICAST) {
- vmolr |= E1000_VMOLR_ROPE;
- vf_data->flags |= IGB_VF_FLAG_UNI_PROMISC;
- *msgbuf &= ~E1000_VF_SET_PROMISC_UNICAST;
- }
-#endif
- if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) {
- vmolr |= E1000_VMOLR_MPME;
- vf_data->flags |= IGB_VF_FLAG_MULTI_PROMISC;
- *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST;
- } else {
- /*
- * if we have hashes and we are clearing a multicast promisc
- * flag we need to write the hashes to the MTA as this step
- * was previously skipped
- */
- if (vf_data->num_vf_mc_hashes > 30) {
- vmolr |= E1000_VMOLR_MPME;
- } else if (vf_data->num_vf_mc_hashes) {
- int j;
- vmolr |= E1000_VMOLR_ROMPE;
- for (j = 0; j < vf_data->num_vf_mc_hashes; j++)
- igb_mta_set(adapter, vf_data->vf_mc_hashes[j]);
- }
- }
-
- E1000_WRITE_REG(hw, E1000_VMOLR(vf), vmolr);
-
- /* there are flags left unprocessed, likely not supported */
- if (*msgbuf & E1000_VT_MSGINFO_MASK)
- return -EINVAL;
-
- return 0;
-
-}
-
-static int igb_set_vf_multicasts(struct igb_adapter *adapter,
- u32 *msgbuf, u32 vf)
-{
- int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT;
- u16 *hash_list = (u16 *)&msgbuf[1];
- struct vf_data_storage *vf_data = &adapter->vf_data[vf];
- int i;
-
- /* salt away the number of multicast addresses assigned
- * to this VF for later use to restore when the PF multi cast
- * list changes
- */
- vf_data->num_vf_mc_hashes = n;
-
- /* only up to 30 hash values supported */
- if (n > 30)
- n = 30;
-
- /* store the hashes for later use */
- for (i = 0; i < n; i++)
- vf_data->vf_mc_hashes[i] = hash_list[i];
-
- /* Flush and reset the mta with the new values */
- igb_set_rx_mode(adapter->netdev);
-
- return 0;
-}
-
-static void igb_restore_vf_multicasts(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct vf_data_storage *vf_data;
- int i, j;
-
- for (i = 0; i < adapter->vfs_allocated_count; i++) {
- u32 vmolr = E1000_READ_REG(hw, E1000_VMOLR(i));
- vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME);
-
- vf_data = &adapter->vf_data[i];
-
- if ((vf_data->num_vf_mc_hashes > 30) ||
- (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) {
- vmolr |= E1000_VMOLR_MPME;
- } else if (vf_data->num_vf_mc_hashes) {
- vmolr |= E1000_VMOLR_ROMPE;
- for (j = 0; j < vf_data->num_vf_mc_hashes; j++)
- igb_mta_set(adapter, vf_data->vf_mc_hashes[j]);
- }
- E1000_WRITE_REG(hw, E1000_VMOLR(i), vmolr);
- }
-}
-
-static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 pool_mask, reg, vid;
- u16 vlan_default;
- int i;
-
- pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf);
-
- /* Find the vlan filter for this id */
- for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
- reg = E1000_READ_REG(hw, E1000_VLVF(i));
-
- /* remove the vf from the pool */
- reg &= ~pool_mask;
-
- /* if pool is empty then remove entry from vfta */
- if (!(reg & E1000_VLVF_POOLSEL_MASK) &&
- (reg & E1000_VLVF_VLANID_ENABLE)) {
- reg = 0;
- vid = reg & E1000_VLVF_VLANID_MASK;
- igb_vfta_set(adapter, vid, FALSE);
- }
-
- E1000_WRITE_REG(hw, E1000_VLVF(i), reg);
- }
-
- adapter->vf_data[vf].vlans_enabled = 0;
-
- vlan_default = adapter->vf_data[vf].default_vf_vlan_id;
- if (vlan_default)
- igb_vlvf_set(adapter, vlan_default, true, vf);
-}
-
-s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 reg, i;
-
- /* The vlvf table only exists on 82576 hardware and newer */
- if (hw->mac.type < e1000_82576)
- return -1;
-
- /* we only need to do this if VMDq is enabled */
- if (!adapter->vmdq_pools)
- return -1;
-
- /* Find the vlan filter for this id */
- for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
- reg = E1000_READ_REG(hw, E1000_VLVF(i));
- if ((reg & E1000_VLVF_VLANID_ENABLE) &&
- vid == (reg & E1000_VLVF_VLANID_MASK))
- break;
- }
-
- if (add) {
- if (i == E1000_VLVF_ARRAY_SIZE) {
- /* Did not find a matching VLAN ID entry that was
- * enabled. Search for a free filter entry, i.e.
- * one without the enable bit set
- */
- for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
- reg = E1000_READ_REG(hw, E1000_VLVF(i));
- if (!(reg & E1000_VLVF_VLANID_ENABLE))
- break;
- }
- }
- if (i < E1000_VLVF_ARRAY_SIZE) {
- /* Found an enabled/available entry */
- reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf);
-
- /* if !enabled we need to set this up in vfta */
- if (!(reg & E1000_VLVF_VLANID_ENABLE)) {
- /* add VID to filter table */
- igb_vfta_set(adapter, vid, TRUE);
- reg |= E1000_VLVF_VLANID_ENABLE;
- }
- reg &= ~E1000_VLVF_VLANID_MASK;
- reg |= vid;
- E1000_WRITE_REG(hw, E1000_VLVF(i), reg);
-
- /* do not modify RLPML for PF devices */
- if (vf >= adapter->vfs_allocated_count)
- return E1000_SUCCESS;
-
- if (!adapter->vf_data[vf].vlans_enabled) {
- u32 size;
- reg = E1000_READ_REG(hw, E1000_VMOLR(vf));
- size = reg & E1000_VMOLR_RLPML_MASK;
- size += 4;
- reg &= ~E1000_VMOLR_RLPML_MASK;
- reg |= size;
- E1000_WRITE_REG(hw, E1000_VMOLR(vf), reg);
- }
-
- adapter->vf_data[vf].vlans_enabled++;
- }
- } else {
- if (i < E1000_VLVF_ARRAY_SIZE) {
- /* remove vf from the pool */
- reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf));
- /* if pool is empty then remove entry from vfta */
- if (!(reg & E1000_VLVF_POOLSEL_MASK)) {
- reg = 0;
- igb_vfta_set(adapter, vid, FALSE);
- }
- E1000_WRITE_REG(hw, E1000_VLVF(i), reg);
-
- /* do not modify RLPML for PF devices */
- if (vf >= adapter->vfs_allocated_count)
- return E1000_SUCCESS;
-
- adapter->vf_data[vf].vlans_enabled--;
- if (!adapter->vf_data[vf].vlans_enabled) {
- u32 size;
- reg = E1000_READ_REG(hw, E1000_VMOLR(vf));
- size = reg & E1000_VMOLR_RLPML_MASK;
- size -= 4;
- reg &= ~E1000_VMOLR_RLPML_MASK;
- reg |= size;
- E1000_WRITE_REG(hw, E1000_VMOLR(vf), reg);
- }
- }
- }
- return E1000_SUCCESS;
-}
-
-#ifdef IFLA_VF_MAX
-static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- if (vid)
- E1000_WRITE_REG(hw, E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT));
- else
- E1000_WRITE_REG(hw, E1000_VMVIR(vf), 0);
-}
-
-static int igb_ndo_set_vf_vlan(struct net_device *netdev,
-#ifdef HAVE_VF_VLAN_PROTO
- int vf, u16 vlan, u8 qos, __be16 vlan_proto)
-#else
- int vf, u16 vlan, u8 qos)
-#endif
-{
- int err = 0;
- struct igb_adapter *adapter = netdev_priv(netdev);
-
- /* VLAN IDs accepted range 0-4094 */
- if ((vf >= adapter->vfs_allocated_count) || (vlan > VLAN_VID_MASK-1) || (qos > 7))
- return -EINVAL;
-
-#ifdef HAVE_VF_VLAN_PROTO
- if (vlan_proto != htons(ETH_P_8021Q))
- return -EPROTONOSUPPORT;
-#endif
-
- if (vlan || qos) {
- err = igb_vlvf_set(adapter, vlan, !!vlan, vf);
- if (err)
- goto out;
- igb_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf);
- igb_set_vmolr(adapter, vf, !vlan);
- adapter->vf_data[vf].pf_vlan = vlan;
- adapter->vf_data[vf].pf_qos = qos;
- igb_set_vf_vlan_strip(adapter, vf, true);
- dev_info(&adapter->pdev->dev,
- "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
- if (test_bit(__IGB_DOWN, &adapter->state)) {
- dev_warn(&adapter->pdev->dev,
- "The VF VLAN has been set,"
- " but the PF device is not up.\n");
- dev_warn(&adapter->pdev->dev,
- "Bring the PF device up before"
- " attempting to use the VF device.\n");
- }
- } else {
- if (adapter->vf_data[vf].pf_vlan)
- dev_info(&adapter->pdev->dev,
- "Clearing VLAN on VF %d\n", vf);
- igb_vlvf_set(adapter, adapter->vf_data[vf].pf_vlan,
- false, vf);
- igb_set_vmvir(adapter, vlan, vf);
- igb_set_vmolr(adapter, vf, true);
- igb_set_vf_vlan_strip(adapter, vf, false);
- adapter->vf_data[vf].pf_vlan = 0;
- adapter->vf_data[vf].pf_qos = 0;
- }
-out:
- return err;
-}
-
-#ifdef HAVE_VF_SPOOFCHK_CONFIGURE
-static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf,
- bool setting)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 dtxswc, reg_offset;
-
- if (!adapter->vfs_allocated_count)
- return -EOPNOTSUPP;
-
- if (vf >= adapter->vfs_allocated_count)
- return -EINVAL;
-
- reg_offset = (hw->mac.type == e1000_82576) ? E1000_DTXSWC : E1000_TXSWC;
- dtxswc = E1000_READ_REG(hw, reg_offset);
- if (setting)
- dtxswc |= ((1 << vf) |
- (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)));
- else
- dtxswc &= ~((1 << vf) |
- (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)));
- E1000_WRITE_REG(hw, reg_offset, dtxswc);
-
- adapter->vf_data[vf].spoofchk_enabled = setting;
- return E1000_SUCCESS;
-}
-#endif /* HAVE_VF_SPOOFCHK_CONFIGURE */
-#endif /* IFLA_VF_MAX */
-
-static int igb_find_vlvf_entry(struct igb_adapter *adapter, int vid)
-{
- struct e1000_hw *hw = &adapter->hw;
- int i;
- u32 reg;
-
- /* Find the vlan filter for this id */
- for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) {
- reg = E1000_READ_REG(hw, E1000_VLVF(i));
- if ((reg & E1000_VLVF_VLANID_ENABLE) &&
- vid == (reg & E1000_VLVF_VLANID_MASK))
- break;
- }
-
- if (i >= E1000_VLVF_ARRAY_SIZE)
- i = -1;
-
- return i;
-}
-
-static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf)
-{
- struct e1000_hw *hw = &adapter->hw;
- int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT;
- int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK);
- int err = 0;
-
- if (vid)
- igb_set_vf_vlan_strip(adapter, vf, true);
- else
- igb_set_vf_vlan_strip(adapter, vf, false);
-
- /* If in promiscuous mode we need to make sure the PF also has
- * the VLAN filter set.
- */
- if (add && (adapter->netdev->flags & IFF_PROMISC))
- err = igb_vlvf_set(adapter, vid, add,
- adapter->vfs_allocated_count);
- if (err)
- goto out;
-
- err = igb_vlvf_set(adapter, vid, add, vf);
-
- if (err)
- goto out;
-
- /* Go through all the checks to see if the VLAN filter should
- * be wiped completely.
- */
- if (!add && (adapter->netdev->flags & IFF_PROMISC)) {
- u32 vlvf, bits;
-
- int regndx = igb_find_vlvf_entry(adapter, vid);
- if (regndx < 0)
- goto out;
- /* See if any other pools are set for this VLAN filter
- * entry other than the PF.
- */
- vlvf = bits = E1000_READ_REG(hw, E1000_VLVF(regndx));
- bits &= 1 << (E1000_VLVF_POOLSEL_SHIFT +
- adapter->vfs_allocated_count);
- /* If the filter was removed then ensure PF pool bit
- * is cleared if the PF only added itself to the pool
- * because the PF is in promiscuous mode.
- */
- if ((vlvf & VLAN_VID_MASK) == vid &&
-#ifndef HAVE_VLAN_RX_REGISTER
- !test_bit(vid, adapter->active_vlans) &&
-#endif
- !bits)
- igb_vlvf_set(adapter, vid, add,
- adapter->vfs_allocated_count);
- }
-
-out:
- return err;
-}
-
-static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- /* clear flags except flag that the PF has set the MAC */
- adapter->vf_data[vf].flags &= IGB_VF_FLAG_PF_SET_MAC;
- adapter->vf_data[vf].last_nack = jiffies;
-
- /* reset offloads to defaults */
- igb_set_vmolr(adapter, vf, true);
-
- /* reset vlans for device */
- igb_clear_vf_vfta(adapter, vf);
-#ifdef IFLA_VF_MAX
- if (adapter->vf_data[vf].pf_vlan)
- igb_ndo_set_vf_vlan(adapter->netdev, vf,
- adapter->vf_data[vf].pf_vlan,
-#ifdef HAVE_VF_VLAN_PROTO
- adapter->vf_data[vf].pf_qos,
- htons(ETH_P_8021Q));
-#else
- adapter->vf_data[vf].pf_qos);
-#endif
- else
- igb_clear_vf_vfta(adapter, vf);
-#endif
-
- /* reset multicast table array for vf */
- adapter->vf_data[vf].num_vf_mc_hashes = 0;
-
- /* Flush and reset the mta with the new values */
- igb_set_rx_mode(adapter->netdev);
-
- /*
- * Reset the VFs TDWBAL and TDWBAH registers which are not
- * cleared by a VFLR
- */
- E1000_WRITE_REG(hw, E1000_TDWBAH(vf), 0);
- E1000_WRITE_REG(hw, E1000_TDWBAL(vf), 0);
- if (hw->mac.type == e1000_82576) {
- E1000_WRITE_REG(hw, E1000_TDWBAH(IGB_MAX_VF_FUNCTIONS + vf), 0);
- E1000_WRITE_REG(hw, E1000_TDWBAL(IGB_MAX_VF_FUNCTIONS + vf), 0);
- }
-}
-
-static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf)
-{
- unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
-
- /* generate a new mac address as we were hotplug removed/added */
- if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC))
- random_ether_addr(vf_mac);
-
- /* process remaining reset events */
- igb_vf_reset(adapter, vf);
-}
-
-static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
-{
- struct e1000_hw *hw = &adapter->hw;
- unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
- u32 reg, msgbuf[3];
- u8 *addr = (u8 *)(&msgbuf[1]);
-
- /* process all the same items cleared in a function level reset */
- igb_vf_reset(adapter, vf);
-
- /* set vf mac address */
- igb_del_mac_filter(adapter, vf_mac, vf);
- igb_add_mac_filter(adapter, vf_mac, vf);
-
- /* enable transmit and receive for vf */
- reg = E1000_READ_REG(hw, E1000_VFTE);
- E1000_WRITE_REG(hw, E1000_VFTE, reg | (1 << vf));
- reg = E1000_READ_REG(hw, E1000_VFRE);
- E1000_WRITE_REG(hw, E1000_VFRE, reg | (1 << vf));
-
- adapter->vf_data[vf].flags |= IGB_VF_FLAG_CTS;
-
- /* reply to reset with ack and vf mac address */
- msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK;
- memcpy(addr, vf_mac, 6);
- e1000_write_mbx(hw, msgbuf, 3, vf);
-}
-
-static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf)
-{
- /*
- * The VF MAC Address is stored in a packed array of bytes
- * starting at the second 32 bit word of the msg array
- */
- unsigned char *addr = (unsigned char *)&msg[1];
- int err = -1;
-
- if (is_valid_ether_addr(addr))
- err = igb_set_vf_mac(adapter, vf, addr);
-
- return err;
-}
-
-static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct vf_data_storage *vf_data = &adapter->vf_data[vf];
- u32 msg = E1000_VT_MSGTYPE_NACK;
-
- /* if device isn't clear to send it shouldn't be reading either */
- if (!(vf_data->flags & IGB_VF_FLAG_CTS) &&
- time_after(jiffies, vf_data->last_nack + (2 * HZ))) {
- e1000_write_mbx(hw, &msg, 1, vf);
- vf_data->last_nack = jiffies;
- }
-}
-
-static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf)
-{
- struct pci_dev *pdev = adapter->pdev;
- u32 msgbuf[E1000_VFMAILBOX_SIZE];
- struct e1000_hw *hw = &adapter->hw;
- struct vf_data_storage *vf_data = &adapter->vf_data[vf];
- s32 retval;
-
- retval = e1000_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf);
-
- if (retval) {
- dev_err(pci_dev_to_dev(pdev), "Error receiving message from VF\n");
- return;
- }
-
- /* this is a message we already processed, do nothing */
- if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK))
- return;
-
- /*
- * until the vf completes a reset it should not be
- * allowed to start any configuration.
- */
-
- if (msgbuf[0] == E1000_VF_RESET) {
- igb_vf_reset_msg(adapter, vf);
- return;
- }
-
- if (!(vf_data->flags & IGB_VF_FLAG_CTS)) {
- msgbuf[0] = E1000_VT_MSGTYPE_NACK;
- if (time_after(jiffies, vf_data->last_nack + (2 * HZ))) {
- e1000_write_mbx(hw, msgbuf, 1, vf);
- vf_data->last_nack = jiffies;
- }
- return;
- }
-
- switch ((msgbuf[0] & 0xFFFF)) {
- case E1000_VF_SET_MAC_ADDR:
- retval = -EINVAL;
-#ifndef IGB_DISABLE_VF_MAC_SET
- if (!(vf_data->flags & IGB_VF_FLAG_PF_SET_MAC))
- retval = igb_set_vf_mac_addr(adapter, msgbuf, vf);
- else
- DPRINTK(DRV, INFO,
- "VF %d attempted to override administratively "
- "set MAC address\nReload the VF driver to "
- "resume operations\n", vf);
-#endif
- break;
- case E1000_VF_SET_PROMISC:
- retval = igb_set_vf_promisc(adapter, msgbuf, vf);
- break;
- case E1000_VF_SET_MULTICAST:
- retval = igb_set_vf_multicasts(adapter, msgbuf, vf);
- break;
- case E1000_VF_SET_LPE:
- retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf);
- break;
- case E1000_VF_SET_VLAN:
- retval = -1;
-#ifdef IFLA_VF_MAX
- if (vf_data->pf_vlan)
- DPRINTK(DRV, INFO,
- "VF %d attempted to override administratively "
- "set VLAN tag\nReload the VF driver to "
- "resume operations\n", vf);
- else
-#endif
- retval = igb_set_vf_vlan(adapter, msgbuf, vf);
- break;
- default:
- dev_err(pci_dev_to_dev(pdev), "Unhandled Msg %08x\n", msgbuf[0]);
- retval = -E1000_ERR_MBX;
- break;
- }
-
- /* notify the VF of the results of what it sent us */
- if (retval)
- msgbuf[0] |= E1000_VT_MSGTYPE_NACK;
- else
- msgbuf[0] |= E1000_VT_MSGTYPE_ACK;
-
- msgbuf[0] |= E1000_VT_MSGTYPE_CTS;
-
- e1000_write_mbx(hw, msgbuf, 1, vf);
-}
-
-static void igb_msg_task(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 vf;
-
- for (vf = 0; vf < adapter->vfs_allocated_count; vf++) {
- /* process any reset requests */
- if (!e1000_check_for_rst(hw, vf))
- igb_vf_reset_event(adapter, vf);
-
- /* process any messages pending */
- if (!e1000_check_for_msg(hw, vf))
- igb_rcv_msg_from_vf(adapter, vf);
-
- /* process any acks */
- if (!e1000_check_for_ack(hw, vf))
- igb_rcv_ack_from_vf(adapter, vf);
- }
-}
-
-/**
- * igb_set_uta - Set unicast filter table address
- * @adapter: board private structure
- *
- * The unicast table address is a register array of 32-bit registers.
- * The table is meant to be used in a way similar to how the MTA is used
- * however due to certain limitations in the hardware it is necessary to
- * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous
- * enable bit to allow vlan tag stripping when promiscuous mode is enabled
- **/
-static void igb_set_uta(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- int i;
-
- /* The UTA table only exists on 82576 hardware and newer */
- if (hw->mac.type < e1000_82576)
- return;
-
- /* we only need to do this if VMDq is enabled */
- if (!adapter->vmdq_pools)
- return;
-
- for (i = 0; i < hw->mac.uta_reg_count; i++)
- E1000_WRITE_REG_ARRAY(hw, E1000_UTA, i, ~0);
-}
-
-/**
- * igb_intr_msi - Interrupt Handler
- * @irq: interrupt number
- * @data: pointer to a network interface device structure
- **/
-static irqreturn_t igb_intr_msi(int irq, void *data)
-{
- struct igb_adapter *adapter = data;
- struct igb_q_vector *q_vector = adapter->q_vector[0];
- struct e1000_hw *hw = &adapter->hw;
- /* read ICR disables interrupts using IAM */
- u32 icr = E1000_READ_REG(hw, E1000_ICR);
-
- igb_write_itr(q_vector);
-
- if (icr & E1000_ICR_DRSTA)
- schedule_work(&adapter->reset_task);
-
- if (icr & E1000_ICR_DOUTSYNC) {
- /* HW is reporting DMA is out of sync */
- adapter->stats.doosync++;
- }
-
- if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
- hw->mac.get_link_status = 1;
- if (!test_bit(__IGB_DOWN, &adapter->state))
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
- }
-
-#ifdef HAVE_PTP_1588_CLOCK
- if (icr & E1000_ICR_TS) {
- u32 tsicr = E1000_READ_REG(hw, E1000_TSICR);
-
- if (tsicr & E1000_TSICR_TXTS) {
- /* acknowledge the interrupt */
- E1000_WRITE_REG(hw, E1000_TSICR, E1000_TSICR_TXTS);
- /* retrieve hardware timestamp */
- schedule_work(&adapter->ptp_tx_work);
- }
- }
-#endif /* HAVE_PTP_1588_CLOCK */
-
- napi_schedule(&q_vector->napi);
-
- return IRQ_HANDLED;
-}
-
-/**
- * igb_intr - Legacy Interrupt Handler
- * @irq: interrupt number
- * @data: pointer to a network interface device structure
- **/
-static irqreturn_t igb_intr(int irq, void *data)
-{
- struct igb_adapter *adapter = data;
- struct igb_q_vector *q_vector = adapter->q_vector[0];
- struct e1000_hw *hw = &adapter->hw;
- /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
- * need for the IMC write */
- u32 icr = E1000_READ_REG(hw, E1000_ICR);
-
- /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
- * not set, then the adapter didn't send an interrupt */
- if (!(icr & E1000_ICR_INT_ASSERTED))
- return IRQ_NONE;
-
- igb_write_itr(q_vector);
-
- if (icr & E1000_ICR_DRSTA)
- schedule_work(&adapter->reset_task);
-
- if (icr & E1000_ICR_DOUTSYNC) {
- /* HW is reporting DMA is out of sync */
- adapter->stats.doosync++;
- }
-
- if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
- hw->mac.get_link_status = 1;
- /* guard against interrupt when we're going down */
- if (!test_bit(__IGB_DOWN, &adapter->state))
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
- }
-
-#ifdef HAVE_PTP_1588_CLOCK
- if (icr & E1000_ICR_TS) {
- u32 tsicr = E1000_READ_REG(hw, E1000_TSICR);
-
- if (tsicr & E1000_TSICR_TXTS) {
- /* acknowledge the interrupt */
- E1000_WRITE_REG(hw, E1000_TSICR, E1000_TSICR_TXTS);
- /* retrieve hardware timestamp */
- schedule_work(&adapter->ptp_tx_work);
- }
- }
-#endif /* HAVE_PTP_1588_CLOCK */
-
- napi_schedule(&q_vector->napi);
-
- return IRQ_HANDLED;
-}
-
-void igb_ring_irq_enable(struct igb_q_vector *q_vector)
-{
- struct igb_adapter *adapter = q_vector->adapter;
- struct e1000_hw *hw = &adapter->hw;
-
- if ((q_vector->rx.ring && (adapter->rx_itr_setting & 3)) ||
- (!q_vector->rx.ring && (adapter->tx_itr_setting & 3))) {
- if ((adapter->num_q_vectors == 1) && !adapter->vf_data)
- igb_set_itr(q_vector);
- else
- igb_update_ring_itr(q_vector);
- }
-
- if (!test_bit(__IGB_DOWN, &adapter->state)) {
- if (adapter->msix_entries)
- E1000_WRITE_REG(hw, E1000_EIMS, q_vector->eims_value);
- else
- igb_irq_enable(adapter);
- }
-}
-
-/**
- * igb_poll - NAPI Rx polling callback
- * @napi: napi polling structure
- * @budget: count of how many packets we should handle
- **/
-static int igb_poll(struct napi_struct *napi, int budget)
-{
- struct igb_q_vector *q_vector = container_of(napi, struct igb_q_vector, napi);
- bool clean_complete = true;
-
-#ifdef IGB_DCA
- if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED)
- igb_update_dca(q_vector);
-#endif
- if (q_vector->tx.ring)
- clean_complete = igb_clean_tx_irq(q_vector);
-
- if (q_vector->rx.ring)
- clean_complete &= igb_clean_rx_irq(q_vector, budget);
-
-#ifndef HAVE_NETDEV_NAPI_LIST
- /* if netdev is disabled we need to stop polling */
- if (!netif_running(q_vector->adapter->netdev))
- clean_complete = true;
-
-#endif
- /* If all work not completed, return budget and keep polling */
- if (!clean_complete)
- return budget;
-
- /* If not enough Rx work done, exit the polling mode */
- napi_complete(napi);
- igb_ring_irq_enable(q_vector);
-
- return 0;
-}
-
-/**
- * igb_clean_tx_irq - Reclaim resources after transmit completes
- * @q_vector: pointer to q_vector containing needed info
- * returns TRUE if ring is completely cleaned
- **/
-static bool igb_clean_tx_irq(struct igb_q_vector *q_vector)
-{
- struct igb_adapter *adapter = q_vector->adapter;
- struct igb_ring *tx_ring = q_vector->tx.ring;
- struct igb_tx_buffer *tx_buffer;
- union e1000_adv_tx_desc *tx_desc;
- unsigned int total_bytes = 0, total_packets = 0;
- unsigned int budget = q_vector->tx.work_limit;
- unsigned int i = tx_ring->next_to_clean;
-
- if (test_bit(__IGB_DOWN, &adapter->state))
- return true;
-
- tx_buffer = &tx_ring->tx_buffer_info[i];
- tx_desc = IGB_TX_DESC(tx_ring, i);
- i -= tx_ring->count;
-
- do {
- union e1000_adv_tx_desc *eop_desc = tx_buffer->next_to_watch;
-
- /* if next_to_watch is not set then there is no work pending */
- if (!eop_desc)
- break;
-
- /* prevent any other reads prior to eop_desc */
- read_barrier_depends();
-
- /* if DD is not set pending work has not been completed */
- if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)))
- break;
-
- /* clear next_to_watch to prevent false hangs */
- tx_buffer->next_to_watch = NULL;
-
- /* update the statistics for this packet */
- total_bytes += tx_buffer->bytecount;
- total_packets += tx_buffer->gso_segs;
-
- /* free the skb */
- dev_kfree_skb_any(tx_buffer->skb);
-
- /* unmap skb header data */
- dma_unmap_single(tx_ring->dev,
- dma_unmap_addr(tx_buffer, dma),
- dma_unmap_len(tx_buffer, len),
- DMA_TO_DEVICE);
-
- /* clear tx_buffer data */
- tx_buffer->skb = NULL;
- dma_unmap_len_set(tx_buffer, len, 0);
-
- /* clear last DMA location and unmap remaining buffers */
- while (tx_desc != eop_desc) {
- tx_buffer++;
- tx_desc++;
- i++;
- if (unlikely(!i)) {
- i -= tx_ring->count;
- tx_buffer = tx_ring->tx_buffer_info;
- tx_desc = IGB_TX_DESC(tx_ring, 0);
- }
-
- /* unmap any remaining paged data */
- if (dma_unmap_len(tx_buffer, len)) {
- dma_unmap_page(tx_ring->dev,
- dma_unmap_addr(tx_buffer, dma),
- dma_unmap_len(tx_buffer, len),
- DMA_TO_DEVICE);
- dma_unmap_len_set(tx_buffer, len, 0);
- }
- }
-
- /* move us one more past the eop_desc for start of next pkt */
- tx_buffer++;
- tx_desc++;
- i++;
- if (unlikely(!i)) {
- i -= tx_ring->count;
- tx_buffer = tx_ring->tx_buffer_info;
- tx_desc = IGB_TX_DESC(tx_ring, 0);
- }
-
- /* issue prefetch for next Tx descriptor */
- prefetch(tx_desc);
-
- /* update budget accounting */
- budget--;
- } while (likely(budget));
-
- netdev_tx_completed_queue(txring_txq(tx_ring),
- total_packets, total_bytes);
-
- i += tx_ring->count;
- tx_ring->next_to_clean = i;
- tx_ring->tx_stats.bytes += total_bytes;
- tx_ring->tx_stats.packets += total_packets;
- q_vector->tx.total_bytes += total_bytes;
- q_vector->tx.total_packets += total_packets;
-
-#ifdef DEBUG
- if (test_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags) &&
- !(adapter->disable_hw_reset && adapter->tx_hang_detected)) {
-#else
- if (test_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags)) {
-#endif
- struct e1000_hw *hw = &adapter->hw;
-
- /* Detect a transmit hang in hardware, this serializes the
- * check with the clearing of time_stamp and movement of i */
- clear_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags);
- if (tx_buffer->next_to_watch &&
- time_after(jiffies, tx_buffer->time_stamp +
- (adapter->tx_timeout_factor * HZ))
- && !(E1000_READ_REG(hw, E1000_STATUS) &
- E1000_STATUS_TXOFF)) {
-
- /* detected Tx unit hang */
-#ifdef DEBUG
- adapter->tx_hang_detected = TRUE;
- if (adapter->disable_hw_reset) {
- DPRINTK(DRV, WARNING,
- "Deactivating netdev watchdog timer\n");
- if (del_timer(&netdev_ring(tx_ring)->watchdog_timer))
- dev_put(netdev_ring(tx_ring));
-#ifndef HAVE_NET_DEVICE_OPS
- netdev_ring(tx_ring)->tx_timeout = NULL;
-#endif
- }
-#endif /* DEBUG */
- dev_err(tx_ring->dev,
- "Detected Tx Unit Hang\n"
- " Tx Queue <%d>\n"
- " TDH <%x>\n"
- " TDT <%x>\n"
- " next_to_use <%x>\n"
- " next_to_clean <%x>\n"
- "buffer_info[next_to_clean]\n"
- " time_stamp <%lx>\n"
- " next_to_watch <%p>\n"
- " jiffies <%lx>\n"
- " desc.status <%x>\n",
- tx_ring->queue_index,
- E1000_READ_REG(hw, E1000_TDH(tx_ring->reg_idx)),
- readl(tx_ring->tail),
- tx_ring->next_to_use,
- tx_ring->next_to_clean,
- tx_buffer->time_stamp,
- tx_buffer->next_to_watch,
- jiffies,
- tx_buffer->next_to_watch->wb.status);
- if (netif_is_multiqueue(netdev_ring(tx_ring)))
- netif_stop_subqueue(netdev_ring(tx_ring),
- ring_queue_index(tx_ring));
- else
- netif_stop_queue(netdev_ring(tx_ring));
-
- /* we are about to reset, no point in enabling stuff */
- return true;
- }
- }
-
-#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
- if (unlikely(total_packets &&
- netif_carrier_ok(netdev_ring(tx_ring)) &&
- igb_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD)) {
- /* Make sure that anybody stopping the queue after this
- * sees the new next_to_clean.
- */
- smp_mb();
- if (netif_is_multiqueue(netdev_ring(tx_ring))) {
- if (__netif_subqueue_stopped(netdev_ring(tx_ring),
- ring_queue_index(tx_ring)) &&
- !(test_bit(__IGB_DOWN, &adapter->state))) {
- netif_wake_subqueue(netdev_ring(tx_ring),
- ring_queue_index(tx_ring));
- tx_ring->tx_stats.restart_queue++;
- }
- } else {
- if (netif_queue_stopped(netdev_ring(tx_ring)) &&
- !(test_bit(__IGB_DOWN, &adapter->state))) {
- netif_wake_queue(netdev_ring(tx_ring));
- tx_ring->tx_stats.restart_queue++;
- }
- }
- }
-
- return !!budget;
-}
-
-#ifdef HAVE_VLAN_RX_REGISTER
-/**
- * igb_receive_skb - helper function to handle rx indications
- * @q_vector: structure containing interrupt and ring information
- * @skb: packet to send up
- **/
-static void igb_receive_skb(struct igb_q_vector *q_vector,
- struct sk_buff *skb)
-{
- struct vlan_group **vlgrp = netdev_priv(skb->dev);
-
- if (IGB_CB(skb)->vid) {
- if (*vlgrp) {
- vlan_gro_receive(&q_vector->napi, *vlgrp,
- IGB_CB(skb)->vid, skb);
- } else {
- dev_kfree_skb_any(skb);
- }
- } else {
- napi_gro_receive(&q_vector->napi, skb);
- }
-}
-
-#endif /* HAVE_VLAN_RX_REGISTER */
-#ifndef CONFIG_IGB_DISABLE_PACKET_SPLIT
-/**
- * igb_reuse_rx_page - page flip buffer and store it back on the ring
- * @rx_ring: rx descriptor ring to store buffers on
- * @old_buff: donor buffer to have page reused
- *
- * Synchronizes page for reuse by the adapter
- **/
-static void igb_reuse_rx_page(struct igb_ring *rx_ring,
- struct igb_rx_buffer *old_buff)
-{
- struct igb_rx_buffer *new_buff;
- u16 nta = rx_ring->next_to_alloc;
-
- new_buff = &rx_ring->rx_buffer_info[nta];
-
- /* update, and store next to alloc */
- nta++;
- rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0;
-
- /* transfer page from old buffer to new buffer */
- memcpy(new_buff, old_buff, sizeof(struct igb_rx_buffer));
-
- /* sync the buffer for use by the device */
- dma_sync_single_range_for_device(rx_ring->dev, old_buff->dma,
- old_buff->page_offset,
- IGB_RX_BUFSZ,
- DMA_FROM_DEVICE);
-}
-
-static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer,
- struct page *page,
- unsigned int truesize)
-{
- /* avoid re-using remote pages */
- if (unlikely(page_to_nid(page) != numa_node_id()))
- return false;
-
-#if (PAGE_SIZE < 8192)
- /* if we are only owner of page we can reuse it */
- if (unlikely(page_count(page) != 1))
- return false;
-
- /* flip page offset to other buffer */
- rx_buffer->page_offset ^= IGB_RX_BUFSZ;
-
-#else
- /* move offset up to the next cache line */
- rx_buffer->page_offset += truesize;
-
- if (rx_buffer->page_offset > (PAGE_SIZE - IGB_RX_BUFSZ))
- return false;
-#endif
-
- /* bump ref count on page before it is given to the stack */
- get_page(page);
-
- return true;
-}
-
-/**
- * igb_add_rx_frag - Add contents of Rx buffer to sk_buff
- * @rx_ring: rx descriptor ring to transact packets on
- * @rx_buffer: buffer containing page to add
- * @rx_desc: descriptor containing length of buffer written by hardware
- * @skb: sk_buff to place the data into
- *
- * This function will add the data contained in rx_buffer->page to the skb.
- * This is done either through a direct copy if the data in the buffer is
- * less than the skb header size, otherwise it will just attach the page as
- * a frag to the skb.
- *
- * The function will then update the page offset if necessary and return
- * true if the buffer can be reused by the adapter.
- **/
-static bool igb_add_rx_frag(struct igb_ring *rx_ring,
- struct igb_rx_buffer *rx_buffer,
- union e1000_adv_rx_desc *rx_desc,
- struct sk_buff *skb)
-{
- struct page *page = rx_buffer->page;
- unsigned int size = le16_to_cpu(rx_desc->wb.upper.length);
-#if (PAGE_SIZE < 8192)
- unsigned int truesize = IGB_RX_BUFSZ;
-#else
- unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
-#endif
-
- if ((size <= IGB_RX_HDR_LEN) && !skb_is_nonlinear(skb)) {
- unsigned char *va = page_address(page) + rx_buffer->page_offset;
-
-#ifdef HAVE_PTP_1588_CLOCK
- if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) {
- igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb);
- va += IGB_TS_HDR_LEN;
- size -= IGB_TS_HDR_LEN;
- }
-#endif /* HAVE_PTP_1588_CLOCK */
-
- memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long)));
-
- /* we can reuse buffer as-is, just make sure it is local */
- if (likely(page_to_nid(page) == numa_node_id()))
- return true;
-
- /* this page cannot be reused so discard it */
- put_page(page);
- return false;
- }
-
- skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
- rx_buffer->page_offset, size, truesize);
-
- return igb_can_reuse_rx_page(rx_buffer, page, truesize);
-}
-
-static struct sk_buff *igb_fetch_rx_buffer(struct igb_ring *rx_ring,
- union e1000_adv_rx_desc *rx_desc,
- struct sk_buff *skb)
-{
- struct igb_rx_buffer *rx_buffer;
- struct page *page;
-
- rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean];
-
- page = rx_buffer->page;
- prefetchw(page);
-
- if (likely(!skb)) {
- void *page_addr = page_address(page) +
- rx_buffer->page_offset;
-
- /* prefetch first cache line of first page */
- prefetch(page_addr);
-#if L1_CACHE_BYTES < 128
- prefetch(page_addr + L1_CACHE_BYTES);
-#endif
-
- /* allocate a skb to store the frags */
- skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
- IGB_RX_HDR_LEN);
- if (unlikely(!skb)) {
- rx_ring->rx_stats.alloc_failed++;
- return NULL;
- }
-
- /*
- * we will be copying header into skb->data in
- * pskb_may_pull so it is in our interest to prefetch
- * it now to avoid a possible cache miss
- */
- prefetchw(skb->data);
- }
-
- /* we are reusing so sync this buffer for CPU use */
- dma_sync_single_range_for_cpu(rx_ring->dev,
- rx_buffer->dma,
- rx_buffer->page_offset,
- IGB_RX_BUFSZ,
- DMA_FROM_DEVICE);
-
- /* pull page into skb */
- if (igb_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) {
- /* hand second half of page back to the ring */
- igb_reuse_rx_page(rx_ring, rx_buffer);
- } else {
- /* we are not reusing the buffer so unmap it */
- dma_unmap_page(rx_ring->dev, rx_buffer->dma,
- PAGE_SIZE, DMA_FROM_DEVICE);
- }
-
- /* clear contents of rx_buffer */
- rx_buffer->page = NULL;
-
- return skb;
-}
-
-#endif
-static inline void igb_rx_checksum(struct igb_ring *ring,
- union e1000_adv_rx_desc *rx_desc,
- struct sk_buff *skb)
-{
- skb_checksum_none_assert(skb);
-
- /* Ignore Checksum bit is set */
- if (igb_test_staterr(rx_desc, E1000_RXD_STAT_IXSM))
- return;
-
- /* Rx checksum disabled via ethtool */
- if (!(netdev_ring(ring)->features & NETIF_F_RXCSUM))
- return;
-
- /* TCP/UDP checksum error bit is set */
- if (igb_test_staterr(rx_desc,
- E1000_RXDEXT_STATERR_TCPE |
- E1000_RXDEXT_STATERR_IPE)) {
- /*
- * work around errata with sctp packets where the TCPE aka
- * L4E bit is set incorrectly on 64 byte (60 byte w/o crc)
- * packets, (aka let the stack check the crc32c)
- */
- if (!((skb->len == 60) &&
- test_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags)))
- ring->rx_stats.csum_err++;
-
- /* let the stack verify checksum errors */
- return;
- }
- /* It must be a TCP or UDP packet with a valid checksum */
- if (igb_test_staterr(rx_desc, E1000_RXD_STAT_TCPCS |
- E1000_RXD_STAT_UDPCS))
- skb->ip_summed = CHECKSUM_UNNECESSARY;
-}
-
-#ifdef NETIF_F_RXHASH
-static inline void igb_rx_hash(struct igb_ring *ring,
- union e1000_adv_rx_desc *rx_desc,
- struct sk_buff *skb)
-{
- if (netdev_ring(ring)->features & NETIF_F_RXHASH)
- skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
- PKT_HASH_TYPE_L3);
-}
-
-#endif
-#ifndef IGB_NO_LRO
-#ifdef CONFIG_IGB_DISABLE_PACKET_SPLIT
-/**
- * igb_merge_active_tail - merge active tail into lro skb
- * @tail: pointer to active tail in frag_list
- *
- * This function merges the length and data of an active tail into the
- * skb containing the frag_list. It resets the tail's pointer to the head,
- * but it leaves the heads pointer to tail intact.
- **/
-static inline struct sk_buff *igb_merge_active_tail(struct sk_buff *tail)
-{
- struct sk_buff *head = IGB_CB(tail)->head;
-
- if (!head)
- return tail;
-
- head->len += tail->len;
- head->data_len += tail->len;
- head->truesize += tail->len;
-
- IGB_CB(tail)->head = NULL;
-
- return head;
-}
-
-/**
- * igb_add_active_tail - adds an active tail into the skb frag_list
- * @head: pointer to the start of the skb
- * @tail: pointer to active tail to add to frag_list
- *
- * This function adds an active tail to the end of the frag list. This tail
- * will still be receiving data so we cannot yet ad it's stats to the main
- * skb. That is done via igb_merge_active_tail.
- **/
-static inline void igb_add_active_tail(struct sk_buff *head, struct sk_buff *tail)
-{
- struct sk_buff *old_tail = IGB_CB(head)->tail;
-
- if (old_tail) {
- igb_merge_active_tail(old_tail);
- old_tail->next = tail;
- } else {
- skb_shinfo(head)->frag_list = tail;
- }
-
- IGB_CB(tail)->head = head;
- IGB_CB(head)->tail = tail;
-
- IGB_CB(head)->append_cnt++;
-}
-
-/**
- * igb_close_active_frag_list - cleanup pointers on a frag_list skb
- * @head: pointer to head of an active frag list
- *
- * This function will clear the frag_tail_tracker pointer on an active
- * frag_list and returns true if the pointer was actually set
- **/
-static inline bool igb_close_active_frag_list(struct sk_buff *head)
-{
- struct sk_buff *tail = IGB_CB(head)->tail;
-
- if (!tail)
- return false;
-
- igb_merge_active_tail(tail);
-
- IGB_CB(head)->tail = NULL;
-
- return true;
-}
-
-#endif /* CONFIG_IGB_DISABLE_PACKET_SPLIT */
-/**
- * igb_can_lro - returns true if packet is TCP/IPV4 and LRO is enabled
- * @adapter: board private structure
- * @rx_desc: pointer to the rx descriptor
- * @skb: pointer to the skb to be merged
- *
- **/
-static inline bool igb_can_lro(struct igb_ring *rx_ring,
- union e1000_adv_rx_desc *rx_desc,
- struct sk_buff *skb)
-{
- struct iphdr *iph = (struct iphdr *)skb->data;
- __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
-
- /* verify hardware indicates this is IPv4/TCP */
- if((!(pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_TCP)) ||
- !(pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_IPV4))))
- return false;
-
- /* .. and LRO is enabled */
- if (!(netdev_ring(rx_ring)->features & NETIF_F_LRO))
- return false;
-
- /* .. and we are not in promiscuous mode */
- if (netdev_ring(rx_ring)->flags & IFF_PROMISC)
- return false;
-
- /* .. and the header is large enough for us to read IP/TCP fields */
- if (!pskb_may_pull(skb, sizeof(struct igb_lrohdr)))
- return false;
-
- /* .. and there are no VLANs on packet */
- if (skb->protocol != __constant_htons(ETH_P_IP))
- return false;
-
- /* .. and we are version 4 with no options */
- if (*(u8 *)iph != 0x45)
- return false;
-
- /* .. and the packet is not fragmented */
- if (iph->frag_off & htons(IP_MF | IP_OFFSET))
- return false;
-
- /* .. and that next header is TCP */
- if (iph->protocol != IPPROTO_TCP)
- return false;
-
- return true;
-}
-
-static inline struct igb_lrohdr *igb_lro_hdr(struct sk_buff *skb)
-{
- return (struct igb_lrohdr *)skb->data;
-}
-
-/**
- * igb_lro_flush - Indicate packets to upper layer.
- *
- * Update IP and TCP header part of head skb if more than one
- * skb's chained and indicate packets to upper layer.
- **/
-static void igb_lro_flush(struct igb_q_vector *q_vector,
- struct sk_buff *skb)
-{
- struct igb_lro_list *lrolist = &q_vector->lrolist;
-
- __skb_unlink(skb, &lrolist->active);
-
- if (IGB_CB(skb)->append_cnt) {
- struct igb_lrohdr *lroh = igb_lro_hdr(skb);
-
-#ifdef CONFIG_IGB_DISABLE_PACKET_SPLIT
- /* close any active lro contexts */
- igb_close_active_frag_list(skb);
-
-#endif
- /* incorporate ip header and re-calculate checksum */
- lroh->iph.tot_len = ntohs(skb->len);
- lroh->iph.check = 0;
-
- /* header length is 5 since we know no options exist */
- lroh->iph.check = ip_fast_csum((u8 *)lroh, 5);
-
- /* clear TCP checksum to indicate we are an LRO frame */
- lroh->th.check = 0;
-
- /* incorporate latest timestamp into the tcp header */
- if (IGB_CB(skb)->tsecr) {
- lroh->ts[2] = IGB_CB(skb)->tsecr;
- lroh->ts[1] = htonl(IGB_CB(skb)->tsval);
- }
-#ifdef NETIF_F_GSO
-
- skb_shinfo(skb)->gso_size = IGB_CB(skb)->mss;
- skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
-#endif
- }
-
-#ifdef HAVE_VLAN_RX_REGISTER
- igb_receive_skb(q_vector, skb);
-#else
- napi_gro_receive(&q_vector->napi, skb);
-#endif
- lrolist->stats.flushed++;
-}
-
-static void igb_lro_flush_all(struct igb_q_vector *q_vector)
-{
- struct igb_lro_list *lrolist = &q_vector->lrolist;
- struct sk_buff *skb, *tmp;
-
- skb_queue_reverse_walk_safe(&lrolist->active, skb, tmp)
- igb_lro_flush(q_vector, skb);
-}
-
-/*
- * igb_lro_header_ok - Main LRO function.
- **/
-static void igb_lro_header_ok(struct sk_buff *skb)
-{
- struct igb_lrohdr *lroh = igb_lro_hdr(skb);
- u16 opt_bytes, data_len;
-
-#ifdef CONFIG_IGB_DISABLE_PACKET_SPLIT
- IGB_CB(skb)->tail = NULL;
-#endif
- IGB_CB(skb)->tsecr = 0;
- IGB_CB(skb)->append_cnt = 0;
- IGB_CB(skb)->mss = 0;
-
- /* ensure that the checksum is valid */
- if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- return;
-
- /* If we see CE codepoint in IP header, packet is not mergeable */
- if (INET_ECN_is_ce(ipv4_get_dsfield(&lroh->iph)))
- return;
-
- /* ensure no bits set besides ack or psh */
- if (lroh->th.fin || lroh->th.syn || lroh->th.rst ||
- lroh->th.urg || lroh->th.ece || lroh->th.cwr ||
- !lroh->th.ack)
- return;
-
- /* store the total packet length */
- data_len = ntohs(lroh->iph.tot_len);
-
- /* remove any padding from the end of the skb */
- __pskb_trim(skb, data_len);
-
- /* remove header length from data length */
- data_len -= sizeof(struct igb_lrohdr);
-
- /*
- * check for timestamps. Since the only option we handle are timestamps,
- * we only have to handle the simple case of aligned timestamps
- */
- opt_bytes = (lroh->th.doff << 2) - sizeof(struct tcphdr);
- if (opt_bytes != 0) {
- if ((opt_bytes != TCPOLEN_TSTAMP_ALIGNED) ||
- !pskb_may_pull(skb, sizeof(struct igb_lrohdr) +
- TCPOLEN_TSTAMP_ALIGNED) ||
- (lroh->ts[0] != htonl((TCPOPT_NOP << 24) |
- (TCPOPT_NOP << 16) |
- (TCPOPT_TIMESTAMP << 8) |
- TCPOLEN_TIMESTAMP)) ||
- (lroh->ts[2] == 0)) {
- return;
- }
-
- IGB_CB(skb)->tsval = ntohl(lroh->ts[1]);
- IGB_CB(skb)->tsecr = lroh->ts[2];
-
- data_len -= TCPOLEN_TSTAMP_ALIGNED;
- }
-
- /* record data_len as mss for the packet */
- IGB_CB(skb)->mss = data_len;
- IGB_CB(skb)->next_seq = ntohl(lroh->th.seq);
-}
-
-#ifndef CONFIG_IGB_DISABLE_PACKET_SPLIT
-static void igb_merge_frags(struct sk_buff *lro_skb, struct sk_buff *new_skb)
-{
- struct skb_shared_info *sh_info;
- struct skb_shared_info *new_skb_info;
- unsigned int data_len;
-
- sh_info = skb_shinfo(lro_skb);
- new_skb_info = skb_shinfo(new_skb);
-
- /* copy frags into the last skb */
- memcpy(sh_info->frags + sh_info->nr_frags,
- new_skb_info->frags,
- new_skb_info->nr_frags * sizeof(skb_frag_t));
-
- /* copy size data over */
- sh_info->nr_frags += new_skb_info->nr_frags;
- data_len = IGB_CB(new_skb)->mss;
- lro_skb->len += data_len;
- lro_skb->data_len += data_len;
- lro_skb->truesize += data_len;
-
- /* wipe record of data from new_skb */
- new_skb_info->nr_frags = 0;
- new_skb->len = new_skb->data_len = 0;
- dev_kfree_skb_any(new_skb);
-}
-
-#endif /* CONFIG_IGB_DISABLE_PACKET_SPLIT */
-/**
- * igb_lro_receive - if able, queue skb into lro chain
- * @q_vector: structure containing interrupt and ring information
- * @new_skb: pointer to current skb being checked
- *
- * Checks whether the skb given is eligible for LRO and if that's
- * fine chains it to the existing lro_skb based on flowid. If an LRO for
- * the flow doesn't exist create one.
- **/
-static void igb_lro_receive(struct igb_q_vector *q_vector,
- struct sk_buff *new_skb)
-{
- struct sk_buff *lro_skb;
- struct igb_lro_list *lrolist = &q_vector->lrolist;
- struct igb_lrohdr *lroh = igb_lro_hdr(new_skb);
- __be32 saddr = lroh->iph.saddr;
- __be32 daddr = lroh->iph.daddr;
- __be32 tcp_ports = *(__be32 *)&lroh->th;
- u16 data_len;
-#ifdef HAVE_VLAN_RX_REGISTER
- u16 vid = IGB_CB(new_skb)->vid;
-#else
- u16 vid = new_skb->vlan_tci;
-#endif
-
- igb_lro_header_ok(new_skb);
-
- /*
- * we have a packet that might be eligible for LRO,
- * so see if it matches anything we might expect
- */
- skb_queue_walk(&lrolist->active, lro_skb) {
- if (*(__be32 *)&igb_lro_hdr(lro_skb)->th != tcp_ports ||
- igb_lro_hdr(lro_skb)->iph.saddr != saddr ||
- igb_lro_hdr(lro_skb)->iph.daddr != daddr)
- continue;
-
-#ifdef HAVE_VLAN_RX_REGISTER
- if (IGB_CB(lro_skb)->vid != vid)
-#else
- if (lro_skb->vlan_tci != vid)
-#endif
- continue;
-
- /* out of order packet */
- if (IGB_CB(lro_skb)->next_seq != IGB_CB(new_skb)->next_seq) {
- igb_lro_flush(q_vector, lro_skb);
- IGB_CB(new_skb)->mss = 0;
- break;
- }
-
- /* TCP timestamp options have changed */
- if (!IGB_CB(lro_skb)->tsecr != !IGB_CB(new_skb)->tsecr) {
- igb_lro_flush(q_vector, lro_skb);
- break;
- }
-
- /* make sure timestamp values are increasing */
- if (IGB_CB(lro_skb)->tsecr &&
- IGB_CB(lro_skb)->tsval > IGB_CB(new_skb)->tsval) {
- igb_lro_flush(q_vector, lro_skb);
- IGB_CB(new_skb)->mss = 0;
- break;
- }
-
- data_len = IGB_CB(new_skb)->mss;
-
- /* Check for all of the above below
- * malformed header
- * no tcp data
- * resultant packet would be too large
- * new skb is larger than our current mss
- * data would remain in header
- * we would consume more frags then the sk_buff contains
- * ack sequence numbers changed
- * window size has changed
- */
- if (data_len == 0 ||
- data_len > IGB_CB(lro_skb)->mss ||
- data_len > IGB_CB(lro_skb)->free ||
-#ifndef CONFIG_IGB_DISABLE_PACKET_SPLIT
- data_len != new_skb->data_len ||
- skb_shinfo(new_skb)->nr_frags >=
- (MAX_SKB_FRAGS - skb_shinfo(lro_skb)->nr_frags) ||
-#endif
- igb_lro_hdr(lro_skb)->th.ack_seq != lroh->th.ack_seq ||
- igb_lro_hdr(lro_skb)->th.window != lroh->th.window) {
- igb_lro_flush(q_vector, lro_skb);
- break;
- }
-
- /* Remove IP and TCP header*/
- skb_pull(new_skb, new_skb->len - data_len);
-
- /* update timestamp and timestamp echo response */
- IGB_CB(lro_skb)->tsval = IGB_CB(new_skb)->tsval;
- IGB_CB(lro_skb)->tsecr = IGB_CB(new_skb)->tsecr;
-
- /* update sequence and free space */
- IGB_CB(lro_skb)->next_seq += data_len;
- IGB_CB(lro_skb)->free -= data_len;
-
- /* update append_cnt */
- IGB_CB(lro_skb)->append_cnt++;
-
-#ifndef CONFIG_IGB_DISABLE_PACKET_SPLIT
- /* if header is empty pull pages into current skb */
- igb_merge_frags(lro_skb, new_skb);
-#else
- /* chain this new skb in frag_list */
- igb_add_active_tail(lro_skb, new_skb);
-#endif
-
- if ((data_len < IGB_CB(lro_skb)->mss) || lroh->th.psh ||
- skb_shinfo(lro_skb)->nr_frags == MAX_SKB_FRAGS) {
- igb_lro_hdr(lro_skb)->th.psh |= lroh->th.psh;
- igb_lro_flush(q_vector, lro_skb);
- }
-
- lrolist->stats.coal++;
- return;
- }
-
- if (IGB_CB(new_skb)->mss && !lroh->th.psh) {
- /* if we are at capacity flush the tail */
- if (skb_queue_len(&lrolist->active) >= IGB_LRO_MAX) {
- lro_skb = skb_peek_tail(&lrolist->active);
- if (lro_skb)
- igb_lro_flush(q_vector, lro_skb);
- }
-
- /* update sequence and free space */
- IGB_CB(new_skb)->next_seq += IGB_CB(new_skb)->mss;
- IGB_CB(new_skb)->free = 65521 - new_skb->len;
-
- /* .. and insert at the front of the active list */
- __skb_queue_head(&lrolist->active, new_skb);
-
- lrolist->stats.coal++;
- return;
- }
-
- /* packet not handled by any of the above, pass it to the stack */
-#ifdef HAVE_VLAN_RX_REGISTER
- igb_receive_skb(q_vector, new_skb);
-#else
- napi_gro_receive(&q_vector->napi, new_skb);
-#endif
-}
-
-#endif /* IGB_NO_LRO */
-/**
- * igb_process_skb_fields - Populate skb header fields from Rx descriptor
- * @rx_ring: rx descriptor ring packet is being transacted on
- * @rx_desc: pointer to the EOP Rx descriptor
- * @skb: pointer to current skb being populated
- *
- * This function checks the ring, descriptor, and packet information in
- * order to populate the hash, checksum, VLAN, timestamp, protocol, and
- * other fields within the skb.
- **/
-static void igb_process_skb_fields(struct igb_ring *rx_ring,
- union e1000_adv_rx_desc *rx_desc,
- struct sk_buff *skb)
-{
- struct net_device *dev = rx_ring->netdev;
- __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
-
-#ifdef NETIF_F_RXHASH
- igb_rx_hash(rx_ring, rx_desc, skb);
-
-#endif
- igb_rx_checksum(rx_ring, rx_desc, skb);
-
- /* update packet type stats */
- if (pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_IPV4))
- rx_ring->rx_stats.ipv4_packets++;
- else if (pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_IPV4_EX))
- rx_ring->rx_stats.ipv4e_packets++;
- else if (pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_IPV6))
- rx_ring->rx_stats.ipv6_packets++;
- else if (pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_IPV6_EX))
- rx_ring->rx_stats.ipv6e_packets++;
- else if (pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_TCP))
- rx_ring->rx_stats.tcp_packets++;
- else if (pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_UDP))
- rx_ring->rx_stats.udp_packets++;
- else if (pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_SCTP))
- rx_ring->rx_stats.sctp_packets++;
- else if (pkt_info & cpu_to_le16(E1000_RXDADV_PKTTYPE_NFS))
- rx_ring->rx_stats.nfs_packets++;
-
-#ifdef HAVE_PTP_1588_CLOCK
- igb_ptp_rx_hwtstamp(rx_ring, rx_desc, skb);
-#endif /* HAVE_PTP_1588_CLOCK */
-
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
- if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
-#else
- if ((dev->features & NETIF_F_HW_VLAN_RX) &&
-#endif
- igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) {
- u16 vid = 0;
- if (igb_test_staterr(rx_desc, E1000_RXDEXT_STATERR_LB) &&
- test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &rx_ring->flags))
- vid = be16_to_cpu(rx_desc->wb.upper.vlan);
- else
- vid = le16_to_cpu(rx_desc->wb.upper.vlan);
-#ifdef HAVE_VLAN_RX_REGISTER
- IGB_CB(skb)->vid = vid;
- } else {
- IGB_CB(skb)->vid = 0;
-#else
-
-#ifdef HAVE_VLAN_PROTOCOL
- __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
-#else
- __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
-#endif
-
-
-#endif
- }
-
- skb_record_rx_queue(skb, rx_ring->queue_index);
-
- skb->protocol = eth_type_trans(skb, dev);
-}
-
-/**
- * igb_is_non_eop - process handling of non-EOP buffers
- * @rx_ring: Rx ring being processed
- * @rx_desc: Rx descriptor for current buffer
- *
- * This function updates next to clean. If the buffer is an EOP buffer
- * this function exits returning false, otherwise it will place the
- * sk_buff in the next buffer to be chained and return true indicating
- * that this is in fact a non-EOP buffer.
- **/
-static bool igb_is_non_eop(struct igb_ring *rx_ring,
- union e1000_adv_rx_desc *rx_desc)
-{
- u32 ntc = rx_ring->next_to_clean + 1;
-
- /* fetch, update, and store next to clean */
- ntc = (ntc < rx_ring->count) ? ntc : 0;
- rx_ring->next_to_clean = ntc;
-
- prefetch(IGB_RX_DESC(rx_ring, ntc));
-
- if (likely(igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP)))
- return false;
-
- return true;
-}
-
-#ifdef CONFIG_IGB_DISABLE_PACKET_SPLIT
-/* igb_clean_rx_irq -- * legacy */
-static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, int budget)
-{
- struct igb_ring *rx_ring = q_vector->rx.ring;
- unsigned int total_bytes = 0, total_packets = 0;
- u16 cleaned_count = igb_desc_unused(rx_ring);
-
- do {
- struct igb_rx_buffer *rx_buffer;
- union e1000_adv_rx_desc *rx_desc;
- struct sk_buff *skb;
- u16 ntc;
-
- /* return some buffers to hardware, one at a time is too slow */
- if (cleaned_count >= IGB_RX_BUFFER_WRITE) {
- igb_alloc_rx_buffers(rx_ring, cleaned_count);
- cleaned_count = 0;
- }
-
- ntc = rx_ring->next_to_clean;
- rx_desc = IGB_RX_DESC(rx_ring, ntc);
- rx_buffer = &rx_ring->rx_buffer_info[ntc];
-
- if (!igb_test_staterr(rx_desc, E1000_RXD_STAT_DD))
- break;
-
- /*
- * This memory barrier is needed to keep us from reading
- * any other fields out of the rx_desc until we know the
- * RXD_STAT_DD bit is set
- */
- rmb();
-
- skb = rx_buffer->skb;
-
- prefetch(skb->data);
-
- /* pull the header of the skb in */
- __skb_put(skb, le16_to_cpu(rx_desc->wb.upper.length));
-
- /* clear skb reference in buffer info structure */
- rx_buffer->skb = NULL;
-
- cleaned_count++;
-
- BUG_ON(igb_is_non_eop(rx_ring, rx_desc));
-
- dma_unmap_single(rx_ring->dev, rx_buffer->dma,
- rx_ring->rx_buffer_len,
- DMA_FROM_DEVICE);
- rx_buffer->dma = 0;
-
- if (igb_test_staterr(rx_desc,
- E1000_RXDEXT_ERR_FRAME_ERR_MASK)) {
- dev_kfree_skb_any(skb);
- continue;
- }
-
- total_bytes += skb->len;
-
- /* populate checksum, timestamp, VLAN, and protocol */
- igb_process_skb_fields(rx_ring, rx_desc, skb);
-
-#ifndef IGB_NO_LRO
- if (igb_can_lro(rx_ring, rx_desc, skb))
- igb_lro_receive(q_vector, skb);
- else
-#endif
-#ifdef HAVE_VLAN_RX_REGISTER
- igb_receive_skb(q_vector, skb);
-#else
- napi_gro_receive(&q_vector->napi, skb);
-#endif
-
-#ifndef NETIF_F_GRO
- netdev_ring(rx_ring)->last_rx = jiffies;
-
-#endif
- /* update budget accounting */
- total_packets++;
- } while (likely(total_packets < budget));
-
- rx_ring->rx_stats.packets += total_packets;
- rx_ring->rx_stats.bytes += total_bytes;
- q_vector->rx.total_packets += total_packets;
- q_vector->rx.total_bytes += total_bytes;
-
- if (cleaned_count)
- igb_alloc_rx_buffers(rx_ring, cleaned_count);
-
-#ifndef IGB_NO_LRO
- igb_lro_flush_all(q_vector);
-
-#endif /* IGB_NO_LRO */
- return total_packets < budget;
-}
-#else /* CONFIG_IGB_DISABLE_PACKET_SPLIT */
-/**
- * igb_get_headlen - determine size of header for LRO/GRO
- * @data: pointer to the start of the headers
- * @max_len: total length of section to find headers in
- *
- * This function is meant to determine the length of headers that will
- * be recognized by hardware for LRO, and GRO offloads. The main
- * motivation of doing this is to only perform one pull for IPv4 TCP
- * packets so that we can do basic things like calculating the gso_size
- * based on the average data per packet.
- **/
-static unsigned int igb_get_headlen(unsigned char *data,
- unsigned int max_len)
-{
- union {
- unsigned char *network;
- /* l2 headers */
- struct ethhdr *eth;
- struct vlan_hdr *vlan;
- /* l3 headers */
- struct iphdr *ipv4;
- struct ipv6hdr *ipv6;
- } hdr;
- __be16 protocol;
- u8 nexthdr = 0; /* default to not TCP */
- u8 hlen;
-
- /* this should never happen, but better safe than sorry */
- if (max_len < ETH_HLEN)
- return max_len;
-
- /* initialize network frame pointer */
- hdr.network = data;
-
- /* set first protocol and move network header forward */
- protocol = hdr.eth->h_proto;
- hdr.network += ETH_HLEN;
-
- /* handle any vlan tag if present */
- if (protocol == __constant_htons(ETH_P_8021Q)) {
- if ((hdr.network - data) > (max_len - VLAN_HLEN))
- return max_len;
-
- protocol = hdr.vlan->h_vlan_encapsulated_proto;
- hdr.network += VLAN_HLEN;
- }
-
- /* handle L3 protocols */
- if (protocol == __constant_htons(ETH_P_IP)) {
- if ((hdr.network - data) > (max_len - sizeof(struct iphdr)))
- return max_len;
-
- /* access ihl as a u8 to avoid unaligned access on ia64 */
- hlen = (hdr.network[0] & 0x0F) << 2;
-
- /* verify hlen meets minimum size requirements */
- if (hlen < sizeof(struct iphdr))
- return hdr.network - data;
-
- /* record next protocol if header is present */
- if (!(hdr.ipv4->frag_off & htons(IP_OFFSET)))
- nexthdr = hdr.ipv4->protocol;
-#ifdef NETIF_F_TSO6
- } else if (protocol == __constant_htons(ETH_P_IPV6)) {
- if ((hdr.network - data) > (max_len - sizeof(struct ipv6hdr)))
- return max_len;
-
- /* record next protocol */
- nexthdr = hdr.ipv6->nexthdr;
- hlen = sizeof(struct ipv6hdr);
-#endif /* NETIF_F_TSO6 */
- } else {
- return hdr.network - data;
- }
-
- /* relocate pointer to start of L4 header */
- hdr.network += hlen;
-
- /* finally sort out TCP */
- if (nexthdr == IPPROTO_TCP) {
- if ((hdr.network - data) > (max_len - sizeof(struct tcphdr)))
- return max_len;
-
- /* access doff as a u8 to avoid unaligned access on ia64 */
- hlen = (hdr.network[12] & 0xF0) >> 2;
-
- /* verify hlen meets minimum size requirements */
- if (hlen < sizeof(struct tcphdr))
- return hdr.network - data;
-
- hdr.network += hlen;
- } else if (nexthdr == IPPROTO_UDP) {
- if ((hdr.network - data) > (max_len - sizeof(struct udphdr)))
- return max_len;
-
- hdr.network += sizeof(struct udphdr);
- }
-
- /*
- * If everything has gone correctly hdr.network should be the
- * data section of the packet and will be the end of the header.
- * If not then it probably represents the end of the last recognized
- * header.
- */
- if ((hdr.network - data) < max_len)
- return hdr.network - data;
- else
- return max_len;
-}
-
-/**
- * igb_pull_tail - igb specific version of skb_pull_tail
- * @rx_ring: rx descriptor ring packet is being transacted on
- * @rx_desc: pointer to the EOP Rx descriptor
- * @skb: pointer to current skb being adjusted
- *
- * This function is an igb specific version of __pskb_pull_tail. The
- * main difference between this version and the original function is that
- * this function can make several assumptions about the state of things
- * that allow for significant optimizations versus the standard function.
- * As a result we can do things like drop a frag and maintain an accurate
- * truesize for the skb.
- */
-static void igb_pull_tail(struct igb_ring *rx_ring,
- union e1000_adv_rx_desc *rx_desc,
- struct sk_buff *skb)
-{
- struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
- unsigned char *va;
- unsigned int pull_len;
-
- /*
- * it is valid to use page_address instead of kmap since we are
- * working with pages allocated out of the lomem pool per
- * alloc_page(GFP_ATOMIC)
- */
- va = skb_frag_address(frag);
-
-#ifdef HAVE_PTP_1588_CLOCK
- if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) {
- /* retrieve timestamp from buffer */
- igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb);
-
- /* update pointers to remove timestamp header */
- skb_frag_size_sub(frag, IGB_TS_HDR_LEN);
- frag->page_offset += IGB_TS_HDR_LEN;
- skb->data_len -= IGB_TS_HDR_LEN;
- skb->len -= IGB_TS_HDR_LEN;
-
- /* move va to start of packet data */
- va += IGB_TS_HDR_LEN;
- }
-#endif /* HAVE_PTP_1588_CLOCK */
-
- /*
- * we need the header to contain the greater of either ETH_HLEN or
- * 60 bytes if the skb->len is less than 60 for skb_pad.
- */
- pull_len = igb_get_headlen(va, IGB_RX_HDR_LEN);
-
- /* align pull length to size of long to optimize memcpy performance */
- skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long)));
-
- /* update all of the pointers */
- skb_frag_size_sub(frag, pull_len);
- frag->page_offset += pull_len;
- skb->data_len -= pull_len;
- skb->tail += pull_len;
-}
-
-/**
- * igb_cleanup_headers - Correct corrupted or empty headers
- * @rx_ring: rx descriptor ring packet is being transacted on
- * @rx_desc: pointer to the EOP Rx descriptor
- * @skb: pointer to current skb being fixed
- *
- * Address the case where we are pulling data in on pages only
- * and as such no data is present in the skb header.
- *
- * In addition if skb is not at least 60 bytes we need to pad it so that
- * it is large enough to qualify as a valid Ethernet frame.
- *
- * Returns true if an error was encountered and skb was freed.
- **/
-static bool igb_cleanup_headers(struct igb_ring *rx_ring,
- union e1000_adv_rx_desc *rx_desc,
- struct sk_buff *skb)
-{
-
- if (unlikely((igb_test_staterr(rx_desc,
- E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) {
- struct net_device *netdev = rx_ring->netdev;
- if (!(netdev->features & NETIF_F_RXALL)) {
- dev_kfree_skb_any(skb);
- return true;
- }
- }
-
- /* place header in linear portion of buffer */
- if (skb_is_nonlinear(skb))
- igb_pull_tail(rx_ring, rx_desc, skb);
-
- /* if skb_pad returns an error the skb was freed */
- if (unlikely(skb->len < 60)) {
- int pad_len = 60 - skb->len;
-
- if (skb_pad(skb, pad_len))
- return true;
- __skb_put(skb, pad_len);
- }
-
- return false;
-}
-
-/* igb_clean_rx_irq -- * packet split */
-static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, int budget)
-{
- struct igb_ring *rx_ring = q_vector->rx.ring;
- struct sk_buff *skb = rx_ring->skb;
- unsigned int total_bytes = 0, total_packets = 0;
- u16 cleaned_count = igb_desc_unused(rx_ring);
-
- do {
- union e1000_adv_rx_desc *rx_desc;
-
- /* return some buffers to hardware, one at a time is too slow */
- if (cleaned_count >= IGB_RX_BUFFER_WRITE) {
- igb_alloc_rx_buffers(rx_ring, cleaned_count);
- cleaned_count = 0;
- }
-
- rx_desc = IGB_RX_DESC(rx_ring, rx_ring->next_to_clean);
-
- if (!igb_test_staterr(rx_desc, E1000_RXD_STAT_DD))
- break;
-
- /*
- * This memory barrier is needed to keep us from reading
- * any other fields out of the rx_desc until we know the
- * RXD_STAT_DD bit is set
- */
- rmb();
-
- /* retrieve a buffer from the ring */
- skb = igb_fetch_rx_buffer(rx_ring, rx_desc, skb);
-
- /* exit if we failed to retrieve a buffer */
- if (!skb)
- break;
-
- cleaned_count++;
-
- /* fetch next buffer in frame if non-eop */
- if (igb_is_non_eop(rx_ring, rx_desc))
- continue;
-
- /* verify the packet layout is correct */
- if (igb_cleanup_headers(rx_ring, rx_desc, skb)) {
- skb = NULL;
- continue;
- }
-
- /* probably a little skewed due to removing CRC */
- total_bytes += skb->len;
-
- /* populate checksum, timestamp, VLAN, and protocol */
- igb_process_skb_fields(rx_ring, rx_desc, skb);
-
-#ifndef IGB_NO_LRO
- if (igb_can_lro(rx_ring, rx_desc, skb))
- igb_lro_receive(q_vector, skb);
- else
-#endif
-#ifdef HAVE_VLAN_RX_REGISTER
- igb_receive_skb(q_vector, skb);
-#else
- napi_gro_receive(&q_vector->napi, skb);
-#endif
-#ifndef NETIF_F_GRO
-
- netdev_ring(rx_ring)->last_rx = jiffies;
-#endif
-
- /* reset skb pointer */
- skb = NULL;
-
- /* update budget accounting */
- total_packets++;
- } while (likely(total_packets < budget));
-
- /* place incomplete frames back on ring for completion */
- rx_ring->skb = skb;
-
- rx_ring->rx_stats.packets += total_packets;
- rx_ring->rx_stats.bytes += total_bytes;
- q_vector->rx.total_packets += total_packets;
- q_vector->rx.total_bytes += total_bytes;
-
- if (cleaned_count)
- igb_alloc_rx_buffers(rx_ring, cleaned_count);
-
-#ifndef IGB_NO_LRO
- igb_lro_flush_all(q_vector);
-
-#endif /* IGB_NO_LRO */
- return total_packets < budget;
-}
-#endif /* CONFIG_IGB_DISABLE_PACKET_SPLIT */
-
-#ifdef CONFIG_IGB_DISABLE_PACKET_SPLIT
-static bool igb_alloc_mapped_skb(struct igb_ring *rx_ring,
- struct igb_rx_buffer *bi)
-{
- struct sk_buff *skb = bi->skb;
- dma_addr_t dma = bi->dma;
-
- if (dma)
- return true;
-
- if (likely(!skb)) {
- skb = netdev_alloc_skb_ip_align(netdev_ring(rx_ring),
- rx_ring->rx_buffer_len);
- bi->skb = skb;
- if (!skb) {
- rx_ring->rx_stats.alloc_failed++;
- return false;
- }
-
- /* initialize skb for ring */
- skb_record_rx_queue(skb, ring_queue_index(rx_ring));
- }
-
- dma = dma_map_single(rx_ring->dev, skb->data,
- rx_ring->rx_buffer_len, DMA_FROM_DEVICE);
-
- /* if mapping failed free memory back to system since
- * there isn't much point in holding memory we can't use
- */
- if (dma_mapping_error(rx_ring->dev, dma)) {
- dev_kfree_skb_any(skb);
- bi->skb = NULL;
-
- rx_ring->rx_stats.alloc_failed++;
- return false;
- }
-
- bi->dma = dma;
- return true;
-}
-
-#else /* CONFIG_IGB_DISABLE_PACKET_SPLIT */
-static bool igb_alloc_mapped_page(struct igb_ring *rx_ring,
- struct igb_rx_buffer *bi)
-{
- struct page *page = bi->page;
- dma_addr_t dma;
-
- /* since we are recycling buffers we should seldom need to alloc */
- if (likely(page))
- return true;
-
- /* alloc new page for storage */
- page = alloc_page(GFP_ATOMIC | __GFP_COLD);
- if (unlikely(!page)) {
- rx_ring->rx_stats.alloc_failed++;
- return false;
- }
-
- /* map page for use */
- dma = dma_map_page(rx_ring->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE);
-
- /*
- * if mapping failed free memory back to system since
- * there isn't much point in holding memory we can't use
- */
- if (dma_mapping_error(rx_ring->dev, dma)) {
- __free_page(page);
-
- rx_ring->rx_stats.alloc_failed++;
- return false;
- }
-
- bi->dma = dma;
- bi->page = page;
- bi->page_offset = 0;
-
- return true;
-}
-
-#endif /* CONFIG_IGB_DISABLE_PACKET_SPLIT */
-/**
- * igb_alloc_rx_buffers - Replace used receive buffers; packet split
- * @adapter: address of board private structure
- **/
-void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count)
-{
- union e1000_adv_rx_desc *rx_desc;
- struct igb_rx_buffer *bi;
- u16 i = rx_ring->next_to_use;
-
- /* nothing to do */
- if (!cleaned_count)
- return;
-
- rx_desc = IGB_RX_DESC(rx_ring, i);
- bi = &rx_ring->rx_buffer_info[i];
- i -= rx_ring->count;
-
- do {
-#ifdef CONFIG_IGB_DISABLE_PACKET_SPLIT
- if (!igb_alloc_mapped_skb(rx_ring, bi))
-#else
- if (!igb_alloc_mapped_page(rx_ring, bi))
-#endif /* CONFIG_IGB_DISABLE_PACKET_SPLIT */
- break;
-
- /*
- * Refresh the desc even if buffer_addrs didn't change
- * because each write-back erases this info.
- */
-#ifdef CONFIG_IGB_DISABLE_PACKET_SPLIT
- rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
-#else
- rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset);
-#endif
-
- rx_desc++;
- bi++;
- i++;
- if (unlikely(!i)) {
- rx_desc = IGB_RX_DESC(rx_ring, 0);
- bi = rx_ring->rx_buffer_info;
- i -= rx_ring->count;
- }
-
- /* clear the hdr_addr for the next_to_use descriptor */
- rx_desc->read.hdr_addr = 0;
-
- cleaned_count--;
- } while (cleaned_count);
-
- i += rx_ring->count;
-
- if (rx_ring->next_to_use != i) {
- /* record the next descriptor to use */
- rx_ring->next_to_use = i;
-
-#ifndef CONFIG_IGB_DISABLE_PACKET_SPLIT
- /* update next to alloc since we have filled the ring */
- rx_ring->next_to_alloc = i;
-
-#endif
- /*
- * Force memory writes to complete before letting h/w
- * know there are new descriptors to fetch. (Only
- * applicable for weak-ordered memory model archs,
- * such as IA-64).
- */
- wmb();
- writel(i, rx_ring->tail);
- }
-}
-
-#ifdef SIOCGMIIPHY
-/**
- * igb_mii_ioctl -
- * @netdev:
- * @ifreq:
- * @cmd:
- **/
-static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct mii_ioctl_data *data = if_mii(ifr);
-
- if (adapter->hw.phy.media_type != e1000_media_type_copper)
- return -EOPNOTSUPP;
-
- switch (cmd) {
- case SIOCGMIIPHY:
- data->phy_id = adapter->hw.phy.addr;
- break;
- case SIOCGMIIREG:
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
- &data->val_out))
- return -EIO;
- break;
- case SIOCSMIIREG:
- default:
- return -EOPNOTSUPP;
- }
- return E1000_SUCCESS;
-}
-
-#endif
-/**
- * igb_ioctl -
- * @netdev:
- * @ifreq:
- * @cmd:
- **/
-static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
- switch (cmd) {
-#ifdef SIOCGMIIPHY
- case SIOCGMIIPHY:
- case SIOCGMIIREG:
- case SIOCSMIIREG:
- return igb_mii_ioctl(netdev, ifr, cmd);
-#endif
-#ifdef HAVE_PTP_1588_CLOCK
- case SIOCSHWTSTAMP:
- return igb_ptp_hwtstamp_ioctl(netdev, ifr, cmd);
-#endif /* HAVE_PTP_1588_CLOCK */
-#ifdef ETHTOOL_OPS_COMPAT
- case SIOCETHTOOL:
- return ethtool_ioctl(ifr);
-#endif
- default:
- return -EOPNOTSUPP;
- }
-}
-
-s32 e1000_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
-{
- struct igb_adapter *adapter = hw->back;
- u16 cap_offset;
-
- cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
- if (!cap_offset)
- return -E1000_ERR_CONFIG;
-
- pci_read_config_word(adapter->pdev, cap_offset + reg, value);
-
- return E1000_SUCCESS;
-}
-
-s32 e1000_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
-{
- struct igb_adapter *adapter = hw->back;
- u16 cap_offset;
-
- cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
- if (!cap_offset)
- return -E1000_ERR_CONFIG;
-
- pci_write_config_word(adapter->pdev, cap_offset + reg, *value);
-
- return E1000_SUCCESS;
-}
-
-#ifdef HAVE_VLAN_RX_REGISTER
-static void igb_vlan_mode(struct net_device *netdev, struct vlan_group *vlgrp)
-#else
-void igb_vlan_mode(struct net_device *netdev, u32 features)
-#endif
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 ctrl, rctl;
- int i;
-#ifdef HAVE_VLAN_RX_REGISTER
- bool enable = !!vlgrp;
-
- igb_irq_disable(adapter);
-
- adapter->vlgrp = vlgrp;
-
- if (!test_bit(__IGB_DOWN, &adapter->state))
- igb_irq_enable(adapter);
-#else
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
- bool enable = !!(features & NETIF_F_HW_VLAN_CTAG_RX);
-#else
- bool enable = !!(features & NETIF_F_HW_VLAN_RX);
-#endif
-#endif
-
- if (enable) {
- /* enable VLAN tag insert/strip */
- ctrl = E1000_READ_REG(hw, E1000_CTRL);
- ctrl |= E1000_CTRL_VME;
- E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
-
- /* Disable CFI check */
- rctl = E1000_READ_REG(hw, E1000_RCTL);
- rctl &= ~E1000_RCTL_CFIEN;
- E1000_WRITE_REG(hw, E1000_RCTL, rctl);
- } else {
- /* disable VLAN tag insert/strip */
- ctrl = E1000_READ_REG(hw, E1000_CTRL);
- ctrl &= ~E1000_CTRL_VME;
- E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
- }
-
-#ifndef CONFIG_IGB_VMDQ_NETDEV
- for (i = 0; i < adapter->vmdq_pools; i++) {
- igb_set_vf_vlan_strip(adapter,
- adapter->vfs_allocated_count + i,
- enable);
- }
-
-#else
- igb_set_vf_vlan_strip(adapter,
- adapter->vfs_allocated_count,
- enable);
-
- for (i = 1; i < adapter->vmdq_pools; i++) {
-#ifdef HAVE_VLAN_RX_REGISTER
- struct igb_vmdq_adapter *vadapter;
- vadapter = netdev_priv(adapter->vmdq_netdev[i-1]);
- enable = !!vadapter->vlgrp;
-#else
- struct net_device *vnetdev;
- vnetdev = adapter->vmdq_netdev[i-1];
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
- enable = !!(vnetdev->features & NETIF_F_HW_VLAN_CTAG_RX);
-#else
- enable = !!(vnetdev->features & NETIF_F_HW_VLAN_RX);
-#endif
-#endif
- igb_set_vf_vlan_strip(adapter,
- adapter->vfs_allocated_count + i,
- enable);
- }
-
-#endif
- igb_rlpml_set(adapter);
-}
-
-#ifdef HAVE_VLAN_PROTOCOL
-static int igb_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
-#elif defined HAVE_INT_NDO_VLAN_RX_ADD_VID
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
-static int igb_vlan_rx_add_vid(struct net_device *netdev,
- __always_unused __be16 proto, u16 vid)
-#else
-static int igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
-#endif
-#else
-static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
-#endif
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- int pf_id = adapter->vfs_allocated_count;
-
- /* attempt to add filter to vlvf array */
- igb_vlvf_set(adapter, vid, TRUE, pf_id);
-
- /* add the filter since PF can receive vlans w/o entry in vlvf */
- igb_vfta_set(adapter, vid, TRUE);
-#ifndef HAVE_NETDEV_VLAN_FEATURES
-
- /* Copy feature flags from netdev to the vlan netdev for this vid.
- * This allows things like TSO to bubble down to our vlan device.
- * There is no need to update netdev for vlan 0 (DCB), since it
- * wouldn't has v_netdev.
- */
- if (adapter->vlgrp) {
- struct vlan_group *vlgrp = adapter->vlgrp;
- struct net_device *v_netdev = vlan_group_get_device(vlgrp, vid);
- if (v_netdev) {
- v_netdev->features |= netdev->features;
- vlan_group_set_device(vlgrp, vid, v_netdev);
- }
- }
-#endif
-#ifndef HAVE_VLAN_RX_REGISTER
-
- set_bit(vid, adapter->active_vlans);
-#endif
-#ifdef HAVE_INT_NDO_VLAN_RX_ADD_VID
- return 0;
-#endif
-}
-
-#ifdef HAVE_VLAN_PROTOCOL
-static int igb_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid)
-#elif defined HAVE_INT_NDO_VLAN_RX_ADD_VID
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
-static int igb_vlan_rx_kill_vid(struct net_device *netdev,
- __always_unused __be16 proto, u16 vid)
-#else
-static int igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
-#endif
-#else
-static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
-#endif
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- int pf_id = adapter->vfs_allocated_count;
- s32 err;
-
-#ifdef HAVE_VLAN_RX_REGISTER
- igb_irq_disable(adapter);
-
- vlan_group_set_device(adapter->vlgrp, vid, NULL);
-
- if (!test_bit(__IGB_DOWN, &adapter->state))
- igb_irq_enable(adapter);
-
-#endif /* HAVE_VLAN_RX_REGISTER */
- /* remove vlan from VLVF table array */
- err = igb_vlvf_set(adapter, vid, FALSE, pf_id);
-
- /* if vid was not present in VLVF just remove it from table */
- if (err)
- igb_vfta_set(adapter, vid, FALSE);
-#ifndef HAVE_VLAN_RX_REGISTER
-
- clear_bit(vid, adapter->active_vlans);
-#endif
-#ifdef HAVE_INT_NDO_VLAN_RX_ADD_VID
- return 0;
-#endif
-}
-
-static void igb_restore_vlan(struct igb_adapter *adapter)
-{
-#ifdef HAVE_VLAN_RX_REGISTER
- igb_vlan_mode(adapter->netdev, adapter->vlgrp);
-
- if (adapter->vlgrp) {
- u16 vid;
- for (vid = 0; vid < VLAN_N_VID; vid++) {
- if (!vlan_group_get_device(adapter->vlgrp, vid))
- continue;
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
- igb_vlan_rx_add_vid(adapter->netdev,
- htons(ETH_P_8021Q), vid);
-#else
- igb_vlan_rx_add_vid(adapter->netdev, vid);
-#endif
- }
- }
-#else
- u16 vid;
-
- igb_vlan_mode(adapter->netdev, adapter->netdev->features);
-
- for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
- igb_vlan_rx_add_vid(adapter->netdev,
- htons(ETH_P_8021Q), vid);
-#else
- igb_vlan_rx_add_vid(adapter->netdev, vid);
-#endif
-#endif
-}
-
-int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx)
-{
- struct pci_dev *pdev = adapter->pdev;
- struct e1000_mac_info *mac = &adapter->hw.mac;
-
- mac->autoneg = 0;
-
- /* SerDes device's does not support 10Mbps Full/duplex
- * and 100Mbps Half duplex
- */
- if (adapter->hw.phy.media_type == e1000_media_type_internal_serdes) {
- switch (spddplx) {
- case SPEED_10 + DUPLEX_HALF:
- case SPEED_10 + DUPLEX_FULL:
- case SPEED_100 + DUPLEX_HALF:
- dev_err(pci_dev_to_dev(pdev),
- "Unsupported Speed/Duplex configuration\n");
- return -EINVAL;
- default:
- break;
- }
- }
-
- switch (spddplx) {
- case SPEED_10 + DUPLEX_HALF:
- mac->forced_speed_duplex = ADVERTISE_10_HALF;
- break;
- case SPEED_10 + DUPLEX_FULL:
- mac->forced_speed_duplex = ADVERTISE_10_FULL;
- break;
- case SPEED_100 + DUPLEX_HALF:
- mac->forced_speed_duplex = ADVERTISE_100_HALF;
- break;
- case SPEED_100 + DUPLEX_FULL:
- mac->forced_speed_duplex = ADVERTISE_100_FULL;
- break;
- case SPEED_1000 + DUPLEX_FULL:
- mac->autoneg = 1;
- adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
- break;
- case SPEED_1000 + DUPLEX_HALF: /* not supported */
- default:
- dev_err(pci_dev_to_dev(pdev), "Unsupported Speed/Duplex configuration\n");
- return -EINVAL;
- }
-
- /* clear MDI, MDI(-X) override is only allowed when autoneg enabled */
- adapter->hw.phy.mdix = AUTO_ALL_MODES;
-
- return 0;
-}
-
-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 = runtime ? E1000_WUFC_LNKC : adapter->wol;
-#ifdef CONFIG_PM
- int retval = 0;
-#endif
-
- netif_device_detach(netdev);
-
- status = E1000_READ_REG(hw, E1000_STATUS);
- if (status & E1000_STATUS_LU)
- wufc &= ~E1000_WUFC_LNKC;
-
- if (netif_running(netdev))
- __igb_close(netdev, true);
-
- igb_clear_interrupt_scheme(adapter);
-
-#ifdef CONFIG_PM
- retval = pci_save_state(pdev);
- if (retval)
- return retval;
-#endif
-
- if (wufc) {
- igb_setup_rctl(adapter);
- igb_set_rx_mode(netdev);
-
- /* turn on all-multi mode if wake on multicast is enabled */
- if (wufc & E1000_WUFC_MC) {
- rctl = E1000_READ_REG(hw, E1000_RCTL);
- rctl |= E1000_RCTL_MPE;
- E1000_WRITE_REG(hw, E1000_RCTL, rctl);
- }
-
- ctrl = E1000_READ_REG(hw, E1000_CTRL);
- /* phy power management enable */
- #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
- ctrl |= E1000_CTRL_ADVD3WUC;
- E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
-
- /* Allow time for pending master requests to run */
- e1000_disable_pcie_master(hw);
-
- E1000_WRITE_REG(hw, E1000_WUC, E1000_WUC_PME_EN);
- E1000_WRITE_REG(hw, E1000_WUFC, wufc);
- } else {
- E1000_WRITE_REG(hw, E1000_WUC, 0);
- E1000_WRITE_REG(hw, E1000_WUFC, 0);
- }
-
- *enable_wake = wufc || adapter->en_mng_pt;
- if (!*enable_wake)
- igb_power_down_link(adapter);
- else
- igb_power_up_link(adapter);
-
- /* Release control of h/w to f/w. If f/w is AMT enabled, this
- * would have already happened in close and is redundant. */
- igb_release_hw_control(adapter);
-
- pci_disable_device(pdev);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-#ifdef HAVE_SYSTEM_SLEEP_PM_OPS
-static int igb_suspend(struct device *dev)
-#else
-static int igb_suspend(struct pci_dev *pdev, pm_message_t state)
-#endif /* HAVE_SYSTEM_SLEEP_PM_OPS */
-{
-#ifdef HAVE_SYSTEM_SLEEP_PM_OPS
- struct pci_dev *pdev = to_pci_dev(dev);
-#endif /* HAVE_SYSTEM_SLEEP_PM_OPS */
- int retval;
- bool wake;
-
- retval = __igb_shutdown(pdev, &wake, 0);
- 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;
-}
-
-#ifdef HAVE_SYSTEM_SLEEP_PM_OPS
-static int igb_resume(struct device *dev)
-#else
-static int igb_resume(struct pci_dev *pdev)
-#endif /* HAVE_SYSTEM_SLEEP_PM_OPS */
-{
-#ifdef HAVE_SYSTEM_SLEEP_PM_OPS
- struct pci_dev *pdev = to_pci_dev(dev);
-#endif /* HAVE_SYSTEM_SLEEP_PM_OPS */
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 err;
-
- pci_set_power_state(pdev, PCI_D0);
- pci_restore_state(pdev);
- pci_save_state(pdev);
-
- err = pci_enable_device_mem(pdev);
- if (err) {
- dev_err(pci_dev_to_dev(pdev),
- "igb: Cannot enable PCI device from suspend\n");
- return err;
- }
- pci_set_master(pdev);
-
- pci_enable_wake(pdev, PCI_D3hot, 0);
- pci_enable_wake(pdev, PCI_D3cold, 0);
-
- if (igb_init_interrupt_scheme(adapter, true)) {
- dev_err(pci_dev_to_dev(pdev), "Unable to allocate memory for queues\n");
- return -ENOMEM;
- }
-
- igb_reset(adapter);
-
- /* let the f/w know that the h/w is now under the control of the
- * driver. */
- igb_get_hw_control(adapter);
-
- E1000_WRITE_REG(hw, E1000_WUS, ~0);
-
- if (netdev->flags & IFF_UP) {
- rtnl_lock();
- err = __igb_open(netdev, true);
- rtnl_unlock();
- if (err)
- return err;
- }
-
- netif_device_attach(netdev);
-
- return 0;
-}
-
-#ifdef CONFIG_PM_RUNTIME
-#ifdef HAVE_SYSTEM_SLEEP_PM_OPS
-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 /* HAVE_SYSTEM_SLEEP_PM_OPS */
-#endif /* CONFIG_PM_RUNTIME */
-#endif /* CONFIG_PM */
-
-#ifdef USE_REBOOT_NOTIFIER
-/* only want to do this for 2.4 kernels? */
-static int igb_notify_reboot(struct notifier_block *nb, unsigned long event,
- void *p)
-{
- struct pci_dev *pdev = NULL;
- bool wake;
-
- switch (event) {
- case SYS_DOWN:
- case SYS_HALT:
- case SYS_POWER_OFF:
- while ((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) {
- if (pci_dev_driver(pdev) == &igb_driver) {
- __igb_shutdown(pdev, &wake, 0);
- if (event == SYS_POWER_OFF) {
- pci_wake_from_d3(pdev, wake);
- pci_set_power_state(pdev, PCI_D3hot);
- }
- }
- }
- }
- return NOTIFY_DONE;
-}
-#else
-static void igb_shutdown(struct pci_dev *pdev)
-{
- bool wake = false;
-
- __igb_shutdown(pdev, &wake, 0);
-
- if (system_state == SYSTEM_POWER_OFF) {
- pci_wake_from_d3(pdev, wake);
- pci_set_power_state(pdev, PCI_D3hot);
- }
-}
-#endif /* USE_REBOOT_NOTIFIER */
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling 'interrupt' - used by things like netconsole to send skbs
- * without having to re-enable interrupts. It's not called while
- * the interrupt routine is executing.
- */
-static void igb_netpoll(struct net_device *netdev)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct igb_q_vector *q_vector;
- int i;
-
- for (i = 0; i < adapter->num_q_vectors; i++) {
- q_vector = adapter->q_vector[i];
- if (adapter->msix_entries)
- E1000_WRITE_REG(hw, E1000_EIMC, q_vector->eims_value);
- else
- igb_irq_disable(adapter);
- napi_schedule(&q_vector->napi);
- }
-}
-#endif /* CONFIG_NET_POLL_CONTROLLER */
-
-#ifdef HAVE_PCI_ERS
-#define E1000_DEV_ID_82576_VF 0x10CA
-/**
- * igb_io_error_detected - called when PCI error is detected
- * @pdev: Pointer to PCI device
- * @state: The current pci connection state
- *
- * This function is called after a PCI bus error affecting
- * this device has been detected.
- */
-static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev,
- pci_channel_state_t state)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igb_adapter *adapter = netdev_priv(netdev);
-
-#ifdef CONFIG_PCI_IOV__UNUSED
- struct pci_dev *bdev, *vfdev;
- u32 dw0, dw1, dw2, dw3;
- int vf, pos;
- u16 req_id, pf_func;
-
- if (!(adapter->flags & IGB_FLAG_DETECT_BAD_DMA))
- goto skip_bad_vf_detection;
-
- bdev = pdev->bus->self;
- while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT))
- bdev = bdev->bus->self;
-
- if (!bdev)
- goto skip_bad_vf_detection;
-
- pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR);
- if (!pos)
- goto skip_bad_vf_detection;
-
- pci_read_config_dword(bdev, pos + PCI_ERR_HEADER_LOG, &dw0);
- pci_read_config_dword(bdev, pos + PCI_ERR_HEADER_LOG + 4, &dw1);
- pci_read_config_dword(bdev, pos + PCI_ERR_HEADER_LOG + 8, &dw2);
- pci_read_config_dword(bdev, pos + PCI_ERR_HEADER_LOG + 12, &dw3);
-
- req_id = dw1 >> 16;
- /* On the 82576 if bit 7 of the requestor ID is set then it's a VF */
- if (!(req_id & 0x0080))
- goto skip_bad_vf_detection;
-
- pf_func = req_id & 0x01;
- if ((pf_func & 1) == (pdev->devfn & 1)) {
-
- vf = (req_id & 0x7F) >> 1;
- dev_err(pci_dev_to_dev(pdev),
- "VF %d has caused a PCIe error\n", vf);
- dev_err(pci_dev_to_dev(pdev),
- "TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: "
- "%8.8x\tdw3: %8.8x\n",
- dw0, dw1, dw2, dw3);
-
- /* Find the pci device of the offending VF */
- vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
- E1000_DEV_ID_82576_VF, NULL);
- while (vfdev) {
- if (vfdev->devfn == (req_id & 0xFF))
- break;
- vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
- E1000_DEV_ID_82576_VF, vfdev);
- }
- /*
- * There's a slim chance the VF could have been hot plugged,
- * so if it is no longer present we don't need to issue the
- * VFLR. Just clean up the AER in that case.
- */
- if (vfdev) {
- dev_err(pci_dev_to_dev(pdev),
- "Issuing VFLR to VF %d\n", vf);
- pci_write_config_dword(vfdev, 0xA8, 0x00008000);
- }
-
- pci_cleanup_aer_uncorrect_error_status(pdev);
- }
-
- /*
- * Even though the error may have occurred on the other port
- * we still need to increment the vf error reference count for
- * both ports because the I/O resume function will be called
- * for both of them.
- */
- adapter->vferr_refcount++;
-
- return PCI_ERS_RESULT_RECOVERED;
-
-skip_bad_vf_detection:
-#endif /* CONFIG_PCI_IOV */
-
- netif_device_detach(netdev);
-
- if (state == pci_channel_io_perm_failure)
- return PCI_ERS_RESULT_DISCONNECT;
-
- if (netif_running(netdev))
- igb_down(adapter);
- pci_disable_device(pdev);
-
- /* Request a slot slot reset. */
- return PCI_ERS_RESULT_NEED_RESET;
-}
-
-/**
- * igb_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 igb_resume routine.
- */
-static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- pci_ers_result_t result;
-
- if (pci_enable_device_mem(pdev)) {
- dev_err(pci_dev_to_dev(pdev),
- "Cannot re-enable PCI device after reset.\n");
- result = PCI_ERS_RESULT_DISCONNECT;
- } else {
- pci_set_master(pdev);
- pci_restore_state(pdev);
- pci_save_state(pdev);
-
- pci_enable_wake(pdev, PCI_D3hot, 0);
- pci_enable_wake(pdev, PCI_D3cold, 0);
-
- schedule_work(&adapter->reset_task);
- E1000_WRITE_REG(hw, E1000_WUS, ~0);
- result = PCI_ERS_RESULT_RECOVERED;
- }
-
- pci_cleanup_aer_uncorrect_error_status(pdev);
-
- return result;
-}
-
-/**
- * igb_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 igb_resume routine.
- */
-static void igb_io_resume(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igb_adapter *adapter = netdev_priv(netdev);
-
- if (adapter->vferr_refcount) {
- dev_info(pci_dev_to_dev(pdev), "Resuming after VF err\n");
- adapter->vferr_refcount--;
- return;
- }
-
- if (netif_running(netdev)) {
- if (igb_up(adapter)) {
- dev_err(pci_dev_to_dev(pdev), "igb_up failed after reset\n");
- return;
- }
- }
-
- netif_device_attach(netdev);
-
- /* let the f/w know that the h/w is now under the control of the
- * driver. */
- igb_get_hw_control(adapter);
-}
-
-#endif /* HAVE_PCI_ERS */
-
-int igb_add_mac_filter(struct igb_adapter *adapter, u8 *addr, u16 queue)
-{
- struct e1000_hw *hw = &adapter->hw;
- int i;
-
- if (is_zero_ether_addr(addr))
- return 0;
-
- for (i = 0; i < hw->mac.rar_entry_count; i++) {
- if (adapter->mac_table[i].state & IGB_MAC_STATE_IN_USE)
- continue;
- adapter->mac_table[i].state = (IGB_MAC_STATE_MODIFIED |
- IGB_MAC_STATE_IN_USE);
- memcpy(adapter->mac_table[i].addr, addr, ETH_ALEN);
- adapter->mac_table[i].queue = queue;
- igb_sync_mac_table(adapter);
- return 0;
- }
- return -ENOMEM;
-}
-int igb_del_mac_filter(struct igb_adapter *adapter, u8* addr, u16 queue)
-{
- /* search table for addr, if found, set to 0 and sync */
- int i;
- struct e1000_hw *hw = &adapter->hw;
-
- if (is_zero_ether_addr(addr))
- return 0;
- for (i = 0; i < hw->mac.rar_entry_count; i++) {
- if (ether_addr_equal(addr, adapter->mac_table[i].addr) &&
- adapter->mac_table[i].queue == queue) {
- adapter->mac_table[i].state = IGB_MAC_STATE_MODIFIED;
- memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
- adapter->mac_table[i].queue = 0;
- igb_sync_mac_table(adapter);
- return 0;
- }
- }
- return -ENOMEM;
-}
-static int igb_set_vf_mac(struct igb_adapter *adapter,
- int vf, unsigned char *mac_addr)
-{
- igb_del_mac_filter(adapter, adapter->vf_data[vf].vf_mac_addresses, vf);
- memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
-
- igb_add_mac_filter(adapter, mac_addr, vf);
-
- return 0;
-}
-
-#ifdef IFLA_VF_MAX
-static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- if (!is_valid_ether_addr(mac) || (vf >= adapter->vfs_allocated_count))
- return -EINVAL;
- adapter->vf_data[vf].flags |= IGB_VF_FLAG_PF_SET_MAC;
- dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
- dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
- " change effective.\n");
- if (test_bit(__IGB_DOWN, &adapter->state)) {
- dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
- " but the PF device is not up.\n");
- dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
- " attempting to use the VF device.\n");
- }
- return igb_set_vf_mac(adapter, vf, mac);
-}
-
-static int igb_link_mbps(int internal_link_speed)
-{
- switch (internal_link_speed) {
- case SPEED_100:
- return 100;
- case SPEED_1000:
- return 1000;
- case SPEED_2500:
- return 2500;
- default:
- return 0;
- }
-}
-
-static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate,
- int link_speed)
-{
- int rf_dec, rf_int;
- u32 bcnrc_val;
-
- if (tx_rate != 0) {
- /* Calculate the rate factor values to set */
- rf_int = link_speed / tx_rate;
- rf_dec = (link_speed - (rf_int * tx_rate));
- rf_dec = (rf_dec * (1<<E1000_RTTBCNRC_RF_INT_SHIFT)) / tx_rate;
-
- bcnrc_val = E1000_RTTBCNRC_RS_ENA;
- bcnrc_val |= ((rf_int<<E1000_RTTBCNRC_RF_INT_SHIFT) &
- E1000_RTTBCNRC_RF_INT_MASK);
- bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK);
- } else {
- bcnrc_val = 0;
- }
-
- E1000_WRITE_REG(hw, E1000_RTTDQSEL, vf); /* vf X uses queue X */
- /*
- * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
- * register. MMW_SIZE=0x014 if 9728-byte jumbo is supported.
- */
- E1000_WRITE_REG(hw, E1000_RTTBCNRM(0), 0x14);
- E1000_WRITE_REG(hw, E1000_RTTBCNRC, bcnrc_val);
-}
-
-static void igb_check_vf_rate_limit(struct igb_adapter *adapter)
-{
- int actual_link_speed, i;
- bool reset_rate = false;
-
- /* VF TX rate limit was not set */
- if ((adapter->vf_rate_link_speed == 0) ||
- (adapter->hw.mac.type != e1000_82576))
- return;
-
- actual_link_speed = igb_link_mbps(adapter->link_speed);
- if (actual_link_speed != adapter->vf_rate_link_speed) {
- reset_rate = true;
- adapter->vf_rate_link_speed = 0;
- dev_info(&adapter->pdev->dev,
- "Link speed has been changed. VF Transmit rate is disabled\n");
- }
-
- for (i = 0; i < adapter->vfs_allocated_count; i++) {
- if (reset_rate)
- adapter->vf_data[i].tx_rate = 0;
-
- igb_set_vf_rate_limit(&adapter->hw, i,
- adapter->vf_data[i].tx_rate, actual_link_speed);
- }
-}
-
-#ifdef HAVE_VF_MIN_MAX_TXRATE
-static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
- int tx_rate)
-#else /* HAVE_VF_MIN_MAX_TXRATE */
-static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
-#endif /* HAVE_VF_MIN_MAX_TXRATE */
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- int actual_link_speed;
-
- if (hw->mac.type != e1000_82576)
- return -EOPNOTSUPP;
-
-#ifdef HAVE_VF_MIN_MAX_TXRATE
- if (min_tx_rate)
- return -EINVAL;
-#endif /* HAVE_VF_MIN_MAX_TXRATE */
-
- actual_link_speed = igb_link_mbps(adapter->link_speed);
- if ((vf >= adapter->vfs_allocated_count) ||
- (!(E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) ||
- (tx_rate < 0) || (tx_rate > actual_link_speed))
- return -EINVAL;
-
- adapter->vf_rate_link_speed = actual_link_speed;
- adapter->vf_data[vf].tx_rate = (u16)tx_rate;
- igb_set_vf_rate_limit(hw, vf, tx_rate, actual_link_speed);
-
- return 0;
-}
-
-static int igb_ndo_get_vf_config(struct net_device *netdev,
- int vf, struct ifla_vf_info *ivi)
-{
- struct igb_adapter *adapter = netdev_priv(netdev);
- if (vf >= adapter->vfs_allocated_count)
- return -EINVAL;
- ivi->vf = vf;
- memcpy(&ivi->mac, adapter->vf_data[vf].vf_mac_addresses, ETH_ALEN);
-#ifdef HAVE_VF_MIN_MAX_TXRATE
- ivi->max_tx_rate = adapter->vf_data[vf].tx_rate;
- ivi->min_tx_rate = 0;
-#else /* HAVE_VF_MIN_MAX_TXRATE */
- ivi->tx_rate = adapter->vf_data[vf].tx_rate;
-#endif /* HAVE_VF_MIN_MAX_TXRATE */
- ivi->vlan = adapter->vf_data[vf].pf_vlan;
- ivi->qos = adapter->vf_data[vf].pf_qos;
-#ifdef HAVE_VF_SPOOFCHK_CONFIGURE
- ivi->spoofchk = adapter->vf_data[vf].spoofchk_enabled;
-#endif
- return 0;
-}
-#endif
-static void igb_vmm_control(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- int count;
- u32 reg;
-
- switch (hw->mac.type) {
- case e1000_82575:
- default:
- /* replication is not supported for 82575 */
- return;
- case e1000_82576:
- /* notify HW that the MAC is adding vlan tags */
- reg = E1000_READ_REG(hw, E1000_DTXCTL);
- reg |= (E1000_DTXCTL_VLAN_ADDED |
- E1000_DTXCTL_SPOOF_INT);
- E1000_WRITE_REG(hw, E1000_DTXCTL, reg);
- case e1000_82580:
- /* enable replication vlan tag stripping */
- reg = E1000_READ_REG(hw, E1000_RPLOLR);
- reg |= E1000_RPLOLR_STRVLAN;
- E1000_WRITE_REG(hw, E1000_RPLOLR, reg);
- case e1000_i350:
- case e1000_i354:
- /* none of the above registers are supported by i350 */
- break;
- }
-
- /* Enable Malicious Driver Detection */
- if ((adapter->vfs_allocated_count) &&
- (adapter->mdd)) {
- if (hw->mac.type == e1000_i350)
- igb_enable_mdd(adapter);
- }
-
- /* enable replication and loopback support */
- count = adapter->vfs_allocated_count || adapter->vmdq_pools;
- if (adapter->flags & IGB_FLAG_LOOPBACK_ENABLE && count)
- e1000_vmdq_set_loopback_pf(hw, 1);
- e1000_vmdq_set_anti_spoofing_pf(hw,
- adapter->vfs_allocated_count || adapter->vmdq_pools,
- adapter->vfs_allocated_count);
- e1000_vmdq_set_replication_pf(hw, adapter->vfs_allocated_count ||
- adapter->vmdq_pools);
-}
-
-static void igb_init_fw(struct igb_adapter *adapter)
-{
- struct e1000_fw_drv_info fw_cmd;
- struct e1000_hw *hw = &adapter->hw;
- int i;
- u16 mask;
-
- if (hw->mac.type == e1000_i210)
- mask = E1000_SWFW_EEP_SM;
- else
- mask = E1000_SWFW_PHY0_SM;
- /* i211 parts do not support this feature */
- if (hw->mac.type == e1000_i211)
- hw->mac.arc_subsystem_valid = false;
-
- if (!hw->mac.ops.acquire_swfw_sync(hw, mask)) {
- for (i = 0; i <= FW_MAX_RETRIES; i++) {
- E1000_WRITE_REG(hw, E1000_FWSTS, E1000_FWSTS_FWRI);
- fw_cmd.hdr.cmd = FW_CMD_DRV_INFO;
- fw_cmd.hdr.buf_len = FW_CMD_DRV_INFO_LEN;
- fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CMD_RESERVED;
- fw_cmd.port_num = hw->bus.func;
- fw_cmd.drv_version = FW_FAMILY_DRV_VER;
- fw_cmd.hdr.checksum = 0;
- fw_cmd.hdr.checksum = e1000_calculate_checksum((u8 *)&fw_cmd,
- (FW_HDR_LEN +
- fw_cmd.hdr.buf_len));
- e1000_host_interface_command(hw, (u8*)&fw_cmd,
- sizeof(fw_cmd));
- if (fw_cmd.hdr.cmd_or_resp.ret_status == FW_STATUS_SUCCESS)
- break;
- }
- } else
- dev_warn(pci_dev_to_dev(adapter->pdev),
- "Unable to get semaphore, firmware init failed.\n");
- hw->mac.ops.release_swfw_sync(hw, mask);
-}
-
-static void igb_init_dmac(struct igb_adapter *adapter, u32 pba)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 dmac_thr;
- u16 hwm;
- u32 status;
-
- if (hw->mac.type == e1000_i211)
- return;
-
- if (hw->mac.type > e1000_82580) {
- if (adapter->dmac != IGB_DMAC_DISABLE) {
- u32 reg;
-
- /* force threshold to 0. */
- E1000_WRITE_REG(hw, E1000_DMCTXTH, 0);
-
- /*
- * DMA Coalescing high water mark needs to be greater
- * than the Rx threshold. Set hwm to PBA - max frame
- * size in 16B units, capping it at PBA - 6KB.
- */
- hwm = 64 * pba - adapter->max_frame_size / 16;
- if (hwm < 64 * (pba - 6))
- hwm = 64 * (pba - 6);
- reg = E1000_READ_REG(hw, E1000_FCRTC);
- reg &= ~E1000_FCRTC_RTH_COAL_MASK;
- reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT)
- & E1000_FCRTC_RTH_COAL_MASK);
- E1000_WRITE_REG(hw, E1000_FCRTC, reg);
-
- /*
- * Set the DMA Coalescing Rx threshold to PBA - 2 * max
- * frame size, capping it at PBA - 10KB.
- */
- dmac_thr = pba - adapter->max_frame_size / 512;
- if (dmac_thr < pba - 10)
- dmac_thr = pba - 10;
- reg = E1000_READ_REG(hw, E1000_DMACR);
- reg &= ~E1000_DMACR_DMACTHR_MASK;
- reg |= ((dmac_thr << E1000_DMACR_DMACTHR_SHIFT)
- & E1000_DMACR_DMACTHR_MASK);
-
- /* transition to L0x or L1 if available..*/
- reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
-
- /* Check if status is 2.5Gb backplane connection
- * before configuration of watchdog timer, which is
- * in msec values in 12.8usec intervals
- * watchdog timer= msec values in 32usec intervals
- * for non 2.5Gb connection
- */
- if (hw->mac.type == e1000_i354) {
- status = E1000_READ_REG(hw, E1000_STATUS);
- if ((status & E1000_STATUS_2P5_SKU) &&
- (!(status & E1000_STATUS_2P5_SKU_OVER)))
- reg |= ((adapter->dmac * 5) >> 6);
- else
- reg |= ((adapter->dmac) >> 5);
- } else {
- reg |= ((adapter->dmac) >> 5);
- }
-
- /*
- * Disable BMC-to-OS Watchdog enable
- * on devices that support OS-to-BMC
- */
- if (hw->mac.type != e1000_i354)
- reg &= ~E1000_DMACR_DC_BMC2OSW_EN;
- E1000_WRITE_REG(hw, E1000_DMACR, reg);
-
- /* no lower threshold to disable coalescing(smart fifb)-UTRESH=0*/
- E1000_WRITE_REG(hw, E1000_DMCRTRH, 0);
-
- /* This sets the time to wait before requesting
- * transition to low power state to number of usecs
- * needed to receive 1 512 byte frame at gigabit
- * line rate. On i350 device, time to make transition
- * to Lx state is delayed by 4 usec with flush disable
- * bit set to avoid losing mailbox interrupts
- */
- reg = E1000_READ_REG(hw, E1000_DMCTLX);
- if (hw->mac.type == e1000_i350)
- reg |= IGB_DMCTLX_DCFLUSH_DIS;
-
- /* in 2.5Gb connection, TTLX unit is 0.4 usec
- * which is 0x4*2 = 0xA. But delay is still 4 usec
- */
- if (hw->mac.type == e1000_i354) {
- status = E1000_READ_REG(hw, E1000_STATUS);
- if ((status & E1000_STATUS_2P5_SKU) &&
- (!(status & E1000_STATUS_2P5_SKU_OVER)))
- reg |= 0xA;
- else
- reg |= 0x4;
- } else {
- reg |= 0x4;
- }
- E1000_WRITE_REG(hw, E1000_DMCTLX, reg);
-
- /* free space in tx packet buffer to wake from DMA coal */
- E1000_WRITE_REG(hw, E1000_DMCTXTH, (IGB_MIN_TXPBSIZE -
- (IGB_TX_BUF_4096 + adapter->max_frame_size)) >> 6);
-
- /* make low power state decision controlled by DMA coal */
- reg = E1000_READ_REG(hw, E1000_PCIEMISC);
- reg &= ~E1000_PCIEMISC_LX_DECISION;
- E1000_WRITE_REG(hw, E1000_PCIEMISC, reg);
- } /* endif adapter->dmac is not disabled */
- } else if (hw->mac.type == e1000_82580) {
- u32 reg = E1000_READ_REG(hw, E1000_PCIEMISC);
- E1000_WRITE_REG(hw, E1000_PCIEMISC,
- reg & ~E1000_PCIEMISC_LX_DECISION);
- E1000_WRITE_REG(hw, E1000_DMACR, 0);
- }
-}
-
-#ifdef HAVE_I2C_SUPPORT
-/* igb_read_i2c_byte - Reads 8 bit word over I2C
- * @hw: pointer to hardware structure
- * @byte_offset: byte offset to read
- * @dev_addr: device address
- * @data: value read
- *
- * Performs byte read operation over I2C interface at
- * a specified device address.
- */
-s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset,
- u8 dev_addr, u8 *data)
-{
- struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw);
- struct i2c_client *this_client = adapter->i2c_client;
- s32 status;
- u16 swfw_mask = 0;
-
- if (!this_client)
- return E1000_ERR_I2C;
-
- swfw_mask = E1000_SWFW_PHY0_SM;
-
- if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)
- != E1000_SUCCESS)
- return E1000_ERR_SWFW_SYNC;
-
- status = i2c_smbus_read_byte_data(this_client, byte_offset);
- hw->mac.ops.release_swfw_sync(hw, swfw_mask);
-
- if (status < 0)
- return E1000_ERR_I2C;
- else {
- *data = status;
- return E1000_SUCCESS;
- }
-}
-
-/* igb_write_i2c_byte - Writes 8 bit word over I2C
- * @hw: pointer to hardware structure
- * @byte_offset: byte offset to write
- * @dev_addr: device address
- * @data: value to write
- *
- * Performs byte write operation over I2C interface at
- * a specified device address.
- */
-s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset,
- u8 dev_addr, u8 data)
-{
- struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw);
- struct i2c_client *this_client = adapter->i2c_client;
- s32 status;
- u16 swfw_mask = E1000_SWFW_PHY0_SM;
-
- if (!this_client)
- return E1000_ERR_I2C;
-
- if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) != E1000_SUCCESS)
- return E1000_ERR_SWFW_SYNC;
- status = i2c_smbus_write_byte_data(this_client, byte_offset, data);
- hw->mac.ops.release_swfw_sync(hw, swfw_mask);
-
- if (status)
- return E1000_ERR_I2C;
- else
- return E1000_SUCCESS;
-}
-#endif /* HAVE_I2C_SUPPORT */
-/* igb_main.c */
-
-
-/**
- * igb_probe - Device Initialization Routine
- * @pdev: PCI device information struct
- * @ent: entry in igb_pci_tbl
- *
- * Returns 0 on success, negative on failure
- *
- * igb_probe initializes an adapter identified by a pci_dev structure.
- * The OS initialization, configuring of the adapter private structure,
- * and a hardware reset occur.
- **/
-int igb_kni_probe(struct pci_dev *pdev,
- struct net_device **lad_dev)
-{
- struct net_device *netdev;
- struct igb_adapter *adapter;
- struct e1000_hw *hw;
- u16 eeprom_data = 0;
- u8 pba_str[E1000_PBANUM_LENGTH];
- s32 ret_val;
- static int global_quad_port_a; /* global quad port a indication */
- int i, err, pci_using_dac = 0;
- static int cards_found;
-
- err = pci_enable_device_mem(pdev);
- if (err)
- return err;
-
-#ifdef NO_KNI
- pci_using_dac = 0;
- err = dma_set_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(64));
- if (!err) {
- err = dma_set_coherent_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(64));
- if (!err)
- pci_using_dac = 1;
- } else {
- err = dma_set_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(32));
- if (err) {
- err = dma_set_coherent_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(32));
- if (err) {
- IGB_ERR("No usable DMA configuration, "
- "aborting\n");
- goto err_dma;
- }
- }
- }
-
-#ifndef HAVE_ASPM_QUIRKS
- /* 82575 requires that the pci-e link partner disable the L0s state */
- switch (pdev->device) {
- case E1000_DEV_ID_82575EB_COPPER:
- case E1000_DEV_ID_82575EB_FIBER_SERDES:
- case E1000_DEV_ID_82575GB_QUAD_COPPER:
- pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S);
- default:
- break;
- }
-
-#endif /* HAVE_ASPM_QUIRKS */
- err = pci_request_selected_regions(pdev,
- pci_select_bars(pdev,
- IORESOURCE_MEM),
- igb_driver_name);
- if (err)
- goto err_pci_reg;
-
- pci_enable_pcie_error_reporting(pdev);
-
- pci_set_master(pdev);
-
- err = -ENOMEM;
-#endif /* NO_KNI */
-#ifdef HAVE_TX_MQ
- netdev = alloc_etherdev_mq(sizeof(struct igb_adapter),
- IGB_MAX_TX_QUEUES);
-#else
- netdev = alloc_etherdev(sizeof(struct igb_adapter));
-#endif /* HAVE_TX_MQ */
- if (!netdev)
- goto err_alloc_etherdev;
-
- SET_MODULE_OWNER(netdev);
- SET_NETDEV_DEV(netdev, &pdev->dev);
-
- //pci_set_drvdata(pdev, netdev);
- adapter = netdev_priv(netdev);
- adapter->netdev = netdev;
- adapter->pdev = pdev;
- hw = &adapter->hw;
- hw->back = adapter;
- adapter->port_num = hw->bus.func;
- adapter->msg_enable = (1 << debug) - 1;
-
-#ifdef HAVE_PCI_ERS
- err = pci_save_state(pdev);
- if (err)
- goto err_ioremap;
-#endif
- err = -EIO;
- hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0));
- if (!hw->hw_addr)
- goto err_ioremap;
-
-#ifdef HAVE_NET_DEVICE_OPS
- netdev->netdev_ops = &igb_netdev_ops;
-#else /* HAVE_NET_DEVICE_OPS */
- netdev->open = &igb_open;
- netdev->stop = &igb_close;
- netdev->get_stats = &igb_get_stats;
-#ifdef HAVE_SET_RX_MODE
- netdev->set_rx_mode = &igb_set_rx_mode;
-#endif
- netdev->set_multicast_list = &igb_set_rx_mode;
- netdev->set_mac_address = &igb_set_mac;
- netdev->change_mtu = &igb_change_mtu;
- netdev->do_ioctl = &igb_ioctl;
-#ifdef HAVE_TX_TIMEOUT
- netdev->tx_timeout = &igb_tx_timeout;
-#endif
- netdev->vlan_rx_register = igb_vlan_mode;
- netdev->vlan_rx_add_vid = igb_vlan_rx_add_vid;
- netdev->vlan_rx_kill_vid = igb_vlan_rx_kill_vid;
-#ifdef CONFIG_NET_POLL_CONTROLLER
- netdev->poll_controller = igb_netpoll;
-#endif
- netdev->hard_start_xmit = &igb_xmit_frame;
-#endif /* HAVE_NET_DEVICE_OPS */
- igb_set_ethtool_ops(netdev);
-#ifdef HAVE_TX_TIMEOUT
- netdev->watchdog_timeo = 5 * HZ;
-#endif
-
- strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
-
- adapter->bd_number = cards_found;
-
- /* setup the private structure */
- err = igb_sw_init(adapter);
- if (err)
- goto err_sw_init;
-
- e1000_get_bus_info(hw);
-
- hw->phy.autoneg_wait_to_complete = FALSE;
- hw->mac.adaptive_ifs = FALSE;
-
- /* Copper options */
- if (hw->phy.media_type == e1000_media_type_copper) {
- hw->phy.mdix = AUTO_ALL_MODES;
- hw->phy.disable_polarity_correction = FALSE;
- hw->phy.ms_type = e1000_ms_hw_default;
- }
-
- if (e1000_check_reset_block(hw))
- dev_info(pci_dev_to_dev(pdev),
- "PHY reset is blocked due to SOL/IDER session.\n");
-
- /*
- * features is initialized to 0 in allocation, it might have bits
- * set by igb_sw_init so we should use an or instead of an
- * assignment.
- */
- netdev->features |= NETIF_F_SG |
- NETIF_F_IP_CSUM |
-#ifdef NETIF_F_IPV6_CSUM
- NETIF_F_IPV6_CSUM |
-#endif
-#ifdef NETIF_F_TSO
- NETIF_F_TSO |
-#ifdef NETIF_F_TSO6
- NETIF_F_TSO6 |
-#endif
-#endif /* NETIF_F_TSO */
-#ifdef NETIF_F_RXHASH
- NETIF_F_RXHASH |
-#endif
- NETIF_F_RXCSUM |
-#ifdef NETIF_F_HW_VLAN_CTAG_RX
- NETIF_F_HW_VLAN_CTAG_RX |
- NETIF_F_HW_VLAN_CTAG_TX;
-#else
- NETIF_F_HW_VLAN_RX |
- NETIF_F_HW_VLAN_TX;
-#endif
-
- if (hw->mac.type >= e1000_82576)
- netdev->features |= NETIF_F_SCTP_CSUM;
-
-#ifdef HAVE_NDO_SET_FEATURES
- /* copy netdev features into list of user selectable features */
- netdev->hw_features |= netdev->features;
-#ifndef IGB_NO_LRO
-
- /* give us the option of enabling LRO later */
- netdev->hw_features |= NETIF_F_LRO;
-#endif
-#else
-#ifdef NETIF_F_GRO
-
- /* this is only needed on kernels prior to 2.6.39 */
- netdev->features |= NETIF_F_GRO;
-#endif
-#endif
-
- /* set this bit last since it cannot be part of hw_features */
-#ifdef NETIF_F_HW_VLAN_CTAG_FILTER
- netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
-#else
- netdev->features |= NETIF_F_HW_VLAN_FILTER;
-#endif
-
-#ifdef HAVE_NETDEV_VLAN_FEATURES
- netdev->vlan_features |= NETIF_F_TSO |
- NETIF_F_TSO6 |
- NETIF_F_IP_CSUM |
- NETIF_F_IPV6_CSUM |
- NETIF_F_SG;
-
-#endif
- if (pci_using_dac)
- netdev->features |= NETIF_F_HIGHDMA;
-
-#ifdef NO_KNI
- adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
-#ifdef DEBUG
- if (adapter->dmac != IGB_DMAC_DISABLE)
- printk("%s: DMA Coalescing is enabled..\n", netdev->name);
-#endif
-
- /* before reading the NVM, reset the controller to put the device in a
- * known good starting state */
- e1000_reset_hw(hw);
-#endif /* NO_KNI */
-
- /* make sure the NVM is good */
- if (e1000_validate_nvm_checksum(hw) < 0) {
- dev_err(pci_dev_to_dev(pdev), "The NVM Checksum Is Not"
- " Valid\n");
- err = -EIO;
- goto err_eeprom;
- }
-
- /* copy the MAC address out of the NVM */
- if (e1000_read_mac_addr(hw))
- dev_err(pci_dev_to_dev(pdev), "NVM Read Error\n");
- memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
-#ifdef ETHTOOL_GPERMADDR
- memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len);
-
- if (!is_valid_ether_addr(netdev->perm_addr)) {
-#else
- if (!is_valid_ether_addr(netdev->dev_addr)) {
-#endif
- dev_err(pci_dev_to_dev(pdev), "Invalid MAC Address\n");
- err = -EIO;
- goto err_eeprom;
- }
-
- memcpy(&adapter->mac_table[0].addr, hw->mac.addr, netdev->addr_len);
- adapter->mac_table[0].queue = adapter->vfs_allocated_count;
- adapter->mac_table[0].state = (IGB_MAC_STATE_DEFAULT | IGB_MAC_STATE_IN_USE);
- igb_rar_set(adapter, 0);
-
- /* get firmware version for ethtool -i */
- igb_set_fw_version(adapter);
-
- /* Check if Media Autosense is enabled */
- if (hw->mac.type == e1000_82580)
- igb_init_mas(adapter);
-
-#ifdef NO_KNI
-#ifdef HAVE_TIMER_SETUP
- timer_setup(&adapter->watchdog_timer, &igb_watchdog, 0);
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- timer_setup(&adapter->dma_err_timer, &igb_dma_err_timer, 0);
- timer_setup(&adapter->phy_info_timer, &igb_update_phy_info, 0);
-#else
- setup_timer(&adapter->watchdog_timer, &igb_watchdog,
- (unsigned long) adapter);
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- setup_timer(&adapter->dma_err_timer, &igb_dma_err_timer,
- (unsigned long) adapter);
- setup_timer(&adapter->phy_info_timer, &igb_update_phy_info,
- (unsigned long) adapter);
-#endif
-
- INIT_WORK(&adapter->reset_task, igb_reset_task);
- INIT_WORK(&adapter->watchdog_task, igb_watchdog_task);
- if (adapter->flags & IGB_FLAG_DETECT_BAD_DMA)
- INIT_WORK(&adapter->dma_err_task, igb_dma_err_task);
-#endif
-
- /* Initialize link properties that are user-changeable */
- adapter->fc_autoneg = true;
- hw->mac.autoneg = true;
- hw->phy.autoneg_advertised = 0x2f;
-
- hw->fc.requested_mode = e1000_fc_default;
- hw->fc.current_mode = e1000_fc_default;
-
- e1000_validate_mdi_setting(hw);
-
- /* By default, support wake on port A */
- if (hw->bus.func == 0)
- adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
-
- /* Check the NVM for wake support for non-port A ports */
- if (hw->mac.type >= e1000_82580)
- hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
- NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
- &eeprom_data);
- else if (hw->bus.func == 1)
- e1000_read_nvm(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
-
- if (eeprom_data & IGB_EEPROM_APME)
- adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
-
- /* now that we have the eeprom settings, apply the special cases where
- * the eeprom may be wrong or the board simply won't support wake on
- * lan on a particular port */
- switch (pdev->device) {
- case E1000_DEV_ID_82575GB_QUAD_COPPER:
- adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
- break;
- case E1000_DEV_ID_82575EB_FIBER_SERDES:
- case E1000_DEV_ID_82576_FIBER:
- case E1000_DEV_ID_82576_SERDES:
- /* Wake events only supported on port A for dual fiber
- * regardless of eeprom setting */
- if (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_FUNC_1)
- adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
- break;
- case E1000_DEV_ID_82576_QUAD_COPPER:
- case E1000_DEV_ID_82576_QUAD_COPPER_ET2:
- /* if quad port adapter, disable WoL on all but port A */
- if (global_quad_port_a != 0)
- adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
- else
- adapter->flags |= IGB_FLAG_QUAD_PORT_A;
- /* Reset for multiple quad port adapters */
- if (++global_quad_port_a == 4)
- global_quad_port_a = 0;
- break;
- default:
- /* If the device can't wake, don't set software support */
- if (!device_can_wakeup(&adapter->pdev->dev))
- adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED;
- break;
- }
-
- /* initialize the wol settings based on the eeprom settings */
- if (adapter->flags & IGB_FLAG_WOL_SUPPORTED)
- adapter->wol |= E1000_WUFC_MAG;
-
- /* Some vendors want WoL disabled by default, but still supported */
- if ((hw->mac.type == e1000_i350) &&
- (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
- adapter->flags |= IGB_FLAG_WOL_SUPPORTED;
- adapter->wol = 0;
- }
-
-#ifdef NO_KNI
- device_set_wakeup_enable(pci_dev_to_dev(adapter->pdev),
- adapter->flags & IGB_FLAG_WOL_SUPPORTED);
-
- /* reset the hardware with the new settings */
- igb_reset(adapter);
- adapter->devrc = 0;
-
-#ifdef HAVE_I2C_SUPPORT
- /* Init the I2C interface */
- err = igb_init_i2c(adapter);
- if (err) {
- dev_err(&pdev->dev, "failed to init i2c interface\n");
- goto err_eeprom;
- }
-#endif /* HAVE_I2C_SUPPORT */
-
- /* let the f/w know that the h/w is now under the control of the
- * driver. */
- igb_get_hw_control(adapter);
-
- strncpy(netdev->name, "eth%d", IFNAMSIZ);
- err = register_netdev(netdev);
- if (err)
- goto err_register;
-
-#ifdef CONFIG_IGB_VMDQ_NETDEV
- err = igb_init_vmdq_netdevs(adapter);
- if (err)
- goto err_register;
-#endif
- /* carrier off reporting is important to ethtool even BEFORE open */
- netif_carrier_off(netdev);
-
-#ifdef IGB_DCA
- if (dca_add_requester(&pdev->dev) == E1000_SUCCESS) {
- adapter->flags |= IGB_FLAG_DCA_ENABLED;
- dev_info(pci_dev_to_dev(pdev), "DCA enabled\n");
- igb_setup_dca(adapter);
- }
-
-#endif
-#ifdef HAVE_PTP_1588_CLOCK
- /* do hw tstamp init after resetting */
- igb_ptp_init(adapter);
-#endif /* HAVE_PTP_1588_CLOCK */
-
-#endif /* NO_KNI */
- dev_info(pci_dev_to_dev(pdev), "Intel(R) Gigabit Ethernet Network Connection\n");
- /* print bus type/speed/width info */
- dev_info(pci_dev_to_dev(pdev), "%s: (PCIe:%s:%s) ",
- netdev->name,
- ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5GT/s" :
- (hw->bus.speed == e1000_bus_speed_5000) ? "5.0GT/s" :
- (hw->mac.type == e1000_i354) ? "integrated" :
- "unknown"),
- ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
- (hw->bus.width == e1000_bus_width_pcie_x2) ? "Width x2" :
- (hw->bus.width == e1000_bus_width_pcie_x1) ? "Width x1" :
- (hw->mac.type == e1000_i354) ? "integrated" :
- "unknown"));
- dev_info(pci_dev_to_dev(pdev), "%s: MAC: ", netdev->name);
- for (i = 0; i < 6; i++)
- printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':');
-
- ret_val = e1000_read_pba_string(hw, pba_str, E1000_PBANUM_LENGTH);
- if (ret_val)
- strncpy(pba_str, "Unknown", sizeof(pba_str) - 1);
- dev_info(pci_dev_to_dev(pdev), "%s: PBA No: %s\n", netdev->name,
- pba_str);
-
-
- /* Initialize the thermal sensor on i350 devices. */
- if (hw->mac.type == e1000_i350) {
- if (hw->bus.func == 0) {
- u16 ets_word;
-
- /*
- * Read the NVM to determine if this i350 device
- * supports an external thermal sensor.
- */
- e1000_read_nvm(hw, NVM_ETS_CFG, 1, &ets_word);
- if (ets_word != 0x0000 && ets_word != 0xFFFF)
- adapter->ets = true;
- else
- adapter->ets = false;
- }
-#ifdef NO_KNI
-#ifdef IGB_HWMON
-
- igb_sysfs_init(adapter);
-#else
-#ifdef IGB_PROCFS
-
- igb_procfs_init(adapter);
-#endif /* IGB_PROCFS */
-#endif /* IGB_HWMON */
-#endif /* NO_KNI */
- } else {
- adapter->ets = false;
- }
-
- if (hw->phy.media_type == e1000_media_type_copper) {
- switch (hw->mac.type) {
- case e1000_i350:
- case e1000_i210:
- case e1000_i211:
- /* Enable EEE for internal copper PHY devices */
- err = e1000_set_eee_i350(hw);
- if ((!err) &&
- (adapter->flags & IGB_FLAG_EEE))
- adapter->eee_advert =
- MDIO_EEE_100TX | MDIO_EEE_1000T;
- break;
- case e1000_i354:
- if ((E1000_READ_REG(hw, E1000_CTRL_EXT)) &
- (E1000_CTRL_EXT_LINK_MODE_SGMII)) {
- err = e1000_set_eee_i354(hw);
- if ((!err) &&
- (adapter->flags & IGB_FLAG_EEE))
- adapter->eee_advert =
- MDIO_EEE_100TX | MDIO_EEE_1000T;
- }
- break;
- default:
- break;
- }
- }
-
- /* send driver version info to firmware */
- if (hw->mac.type >= e1000_i350)
- igb_init_fw(adapter);
-
-#ifndef IGB_NO_LRO
- if (netdev->features & NETIF_F_LRO)
- dev_info(pci_dev_to_dev(pdev), "Internal LRO is enabled \n");
- else
- dev_info(pci_dev_to_dev(pdev), "LRO is disabled \n");
-#endif
- dev_info(pci_dev_to_dev(pdev),
- "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
- adapter->msix_entries ? "MSI-X" :
- (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy",
- adapter->num_rx_queues, adapter->num_tx_queues);
-
- cards_found++;
- *lad_dev = netdev;
-
- pm_runtime_put_noidle(&pdev->dev);
- return 0;
-
-//err_register:
-// igb_release_hw_control(adapter);
-#ifdef HAVE_I2C_SUPPORT
- memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap));
-#endif /* HAVE_I2C_SUPPORT */
-err_eeprom:
-// if (!e1000_check_reset_block(hw))
-// e1000_phy_hw_reset(hw);
-
- if (hw->flash_address)
- iounmap(hw->flash_address);
-err_sw_init:
-// igb_clear_interrupt_scheme(adapter);
-// igb_reset_sriov_capability(adapter);
- iounmap(hw->hw_addr);
-err_ioremap:
- free_netdev(netdev);
-err_alloc_etherdev:
-// pci_release_selected_regions(pdev,
-// pci_select_bars(pdev, IORESOURCE_MEM));
-//err_pci_reg:
-//err_dma:
- pci_disable_device(pdev);
- return err;
-}
-
-
-void igb_kni_remove(struct pci_dev *pdev)
-{
- pci_disable_device(pdev);
-}
Code Review / deb_dpdk.git / blobdiff