diff options
Diffstat (limited to 'drivers/net/igb/igb_main.c')
| -rw-r--r-- | drivers/net/igb/igb_main.c | 6890 |
1 files changed, 0 insertions, 6890 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c deleted file mode 100644 index 40d4c405fd7e..000000000000 --- a/drivers/net/igb/igb_main.c +++ /dev/null @@ -1,6890 +0,0 @@ -/******************************************************************************* - - Intel(R) Gigabit Ethernet Linux driver - Copyright(c) 2007-2011 Intel Corporation. - - This program is free software; you can redistribute it and/or modify it - under the terms and conditions of the GNU General Public License, - version 2, as published by the Free Software Foundation. - - This program is distributed in the hope it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - more details. - - You should have received a copy of the GNU General Public License along with - this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - - The full GNU General Public License is included in this distribution in - the file called "COPYING". - - 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/bitops.h> -#include <linux/vmalloc.h> -#include <linux/pagemap.h> -#include <linux/netdevice.h> -#include <linux/ipv6.h> -#include <linux/slab.h> -#include <net/checksum.h> -#include <net/ip6_checksum.h> -#include <linux/net_tstamp.h> -#include <linux/mii.h> -#include <linux/ethtool.h> -#include <linux/if_vlan.h> -#include <linux/pci.h> -#include <linux/pci-aspm.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/if_ether.h> -#include <linux/aer.h> -#include <linux/prefetch.h> -#ifdef CONFIG_IGB_DCA -#include <linux/dca.h> -#endif -#include "igb.h" - -#define MAJ 3 -#define MIN 0 -#define BUILD 6 -#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \ -__stringify(BUILD) "-k" -char igb_driver_name[] = "igb"; -char igb_driver_version[] = DRV_VERSION; -static const char igb_driver_string[] = - "Intel(R) Gigabit Ethernet Network Driver"; -static const char igb_copyright[] = "Copyright (c) 2007-2011 Intel Corporation."; - -static const struct e1000_info *igb_info_tbl[] = { - [board_82575] = &e1000_82575_info, -}; - -static DEFINE_PCI_DEVICE_TABLE(igb_pci_tbl) = { - { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_COPPER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_FIBER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SERDES), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SGMII), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_FIBER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_QUAD_FIBER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SERDES), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SGMII), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER_DUAL), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SGMII), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SERDES), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_BACKPLANE), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SFP), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS_SERDES), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES_QUAD), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER_ET2), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, - { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, - /* required last entry */ - {0, } -}; - -MODULE_DEVICE_TABLE(pci, igb_pci_tbl); - -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 *); -static int igb_probe(struct pci_dev *, const struct pci_device_id *); -static void __devexit igb_remove(struct pci_dev *pdev); -static void igb_init_hw_timer(struct igb_adapter *adapter); -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_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_clean_rx_ring(struct igb_ring *); -static void igb_set_rx_mode(struct net_device *); -static void igb_update_phy_info(unsigned long); -static void igb_watchdog(unsigned long); -static void igb_watchdog_task(struct work_struct *); -static netdev_tx_t igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *); -static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *dev, - struct rtnl_link_stats64 *stats); -static int igb_change_mtu(struct net_device *, int); -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 CONFIG_IGB_DCA -static void igb_update_dca(struct igb_q_vector *); -static void igb_setup_dca(struct igb_adapter *); -#endif /* CONFIG_IGB_DCA */ -static bool igb_clean_tx_irq(struct igb_q_vector *); -static int igb_poll(struct napi_struct *, int); -static bool igb_clean_rx_irq_adv(struct igb_q_vector *, int *, 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 *); -static void igb_vlan_mode(struct net_device *netdev, u32 features); -static void igb_vlan_rx_add_vid(struct net_device *, u16); -static void igb_vlan_rx_kill_vid(struct net_device *, u16); -static void igb_restore_vlan(struct igb_adapter *); -static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8); -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 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, - int vf, u16 vlan, u8 qos); -static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate); -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 *); - -#ifdef CONFIG_PM -static int igb_suspend(struct pci_dev *, pm_message_t); -static int igb_resume(struct pci_dev *); -#endif -static void igb_shutdown(struct pci_dev *); -#ifdef CONFIG_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 CONFIG_PCI_IOV -static unsigned int max_vfs = 0; -module_param(max_vfs, uint, 0); -MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate " - "per physical function"); -#endif /* CONFIG_PCI_IOV */ - -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, -}; - - -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 - /* Power Management Hooks */ - .suspend = igb_suspend, - .resume = igb_resume, -#endif - .shutdown = igb_shutdown, - .err_handler = &igb_err_handler -}; - -MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); -MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); - -struct igb_reg_info { - u32 ofs; - char *name; -}; - -static const struct igb_reg_info igb_reg_info_tbl[] = { - - /* General Registers */ - {E1000_CTRL, "CTRL"}, - {E1000_STATUS, "STATUS"}, - {E1000_CTRL_EXT, "CTRL_EXT"}, - - /* Interrupt Registers */ - {E1000_ICR, "ICR"}, - - /* RX Registers */ - {E1000_RCTL, "RCTL"}, - {E1000_RDLEN(0), "RDLEN"}, - {E1000_RDH(0), "RDH"}, - {E1000_RDT(0), "RDT"}, - {E1000_RXDCTL(0), "RXDCTL"}, - {E1000_RDBAL(0), "RDBAL"}, - {E1000_RDBAH(0), "RDBAH"}, - - /* TX Registers */ - {E1000_TCTL, "TCTL"}, - {E1000_TDBAL(0), "TDBAL"}, - {E1000_TDBAH(0), "TDBAH"}, - {E1000_TDLEN(0), "TDLEN"}, - {E1000_TDH(0), "TDH"}, - {E1000_TDT(0), "TDT"}, - {E1000_TXDCTL(0), "TXDCTL"}, - {E1000_TDFH, "TDFH"}, - {E1000_TDFT, "TDFT"}, - {E1000_TDFHS, "TDFHS"}, - {E1000_TDFPC, "TDFPC"}, - - /* List Terminator */ - {} -}; - -/* - * igb_regdump - register printout routine - */ -static void igb_regdump(struct e1000_hw *hw, struct igb_reg_info *reginfo) -{ - int n = 0; - char rname[16]; - u32 regs[8]; - - switch (reginfo->ofs) { - case E1000_RDLEN(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_RDLEN(n)); - break; - case E1000_RDH(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_RDH(n)); - break; - case E1000_RDT(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_RDT(n)); - break; - case E1000_RXDCTL(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_RXDCTL(n)); - break; - case E1000_RDBAL(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_RDBAL(n)); - break; - case E1000_RDBAH(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_RDBAH(n)); - break; - case E1000_TDBAL(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_RDBAL(n)); - break; - case E1000_TDBAH(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_TDBAH(n)); - break; - case E1000_TDLEN(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_TDLEN(n)); - break; - case E1000_TDH(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_TDH(n)); - break; - case E1000_TDT(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_TDT(n)); - break; - case E1000_TXDCTL(0): - for (n = 0; n < 4; n++) - regs[n] = rd32(E1000_TXDCTL(n)); - break; - default: - printk(KERN_INFO "%-15s %08x\n", - reginfo->name, rd32(reginfo->ofs)); - return; - } - - snprintf(rname, 16, "%s%s", reginfo->name, "[0-3]"); - printk(KERN_INFO "%-15s ", rname); - for (n = 0; n < 4; n++) - printk(KERN_CONT "%08x ", regs[n]); - printk(KERN_CONT "\n"); -} - -/* - * igb_dump - Print registers, tx-rings and rx-rings - */ -static void igb_dump(struct igb_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct e1000_hw *hw = &adapter->hw; - struct igb_reg_info *reginfo; - int n = 0; - struct igb_ring *tx_ring; - union e1000_adv_tx_desc *tx_desc; - struct my_u0 { u64 a; u64 b; } *u0; - struct igb_buffer *buffer_info; - struct igb_ring *rx_ring; - union e1000_adv_rx_desc *rx_desc; - u32 staterr; - int i = 0; - - if (!netif_msg_hw(adapter)) - return; - - /* Print netdevice Info */ - if (netdev) { - dev_info(&adapter->pdev->dev, "Net device Info\n"); - printk(KERN_INFO "Device Name state " - "trans_start last_rx\n"); - printk(KERN_INFO "%-15s %016lX %016lX %016lX\n", - netdev->name, - netdev->state, - netdev->trans_start, - netdev->last_rx); - } - - /* Print Registers */ - dev_info(&adapter->pdev->dev, "Register Dump\n"); - printk(KERN_INFO " Register Name Value\n"); - for (reginfo = (struct igb_reg_info *)igb_reg_info_tbl; - reginfo->name; reginfo++) { - igb_regdump(hw, reginfo); - } - - /* Print TX Ring Summary */ - if (!netdev || !netif_running(netdev)) - goto exit; - - dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); - printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]" - " leng ntw timestamp\n"); - for (n = 0; n < adapter->num_tx_queues; n++) { - tx_ring = adapter->tx_ring[n]; - buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; - printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n", - n, tx_ring->next_to_use, tx_ring->next_to_clean, - (u64)buffer_info->dma, - buffer_info->length, - buffer_info->next_to_watch, - (u64)buffer_info->time_stamp); - } - - /* Print TX Rings */ - if (!netif_msg_tx_done(adapter)) - goto rx_ring_summary; - - dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); - - /* Transmit Descriptor Formats - * - * Advanced Transmit Descriptor - * +--------------------------------------------------------------+ - * 0 | Buffer Address [63:0] | - * +--------------------------------------------------------------+ - * 8 | PAYLEN | PORTS |CC|IDX | STA | DCMD |DTYP|MAC|RSV| DTALEN | - * +--------------------------------------------------------------+ - * 63 46 45 40 39 38 36 35 32 31 24 15 0 - */ - - for (n = 0; n < adapter->num_tx_queues; n++) { - tx_ring = adapter->tx_ring[n]; - printk(KERN_INFO "------------------------------------\n"); - printk(KERN_INFO "TX QUEUE INDEX = %d\n", tx_ring->queue_index); - printk(KERN_INFO "------------------------------------\n"); - printk(KERN_INFO "T [desc] [address 63:0 ] " - "[PlPOCIStDDM Ln] [bi->dma ] " - "leng ntw timestamp bi->skb\n"); - - for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { - tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); - buffer_info = &tx_ring->buffer_info[i]; - u0 = (struct my_u0 *)tx_desc; - printk(KERN_INFO "T [0x%03X] %016llX %016llX %016llX" - " %04X %3X %016llX %p", i, - le64_to_cpu(u0->a), - le64_to_cpu(u0->b), - (u64)buffer_info->dma, - buffer_info->length, - buffer_info->next_to_watch, - (u64)buffer_info->time_stamp, - buffer_info->skb); - if (i == tx_ring->next_to_use && - i == tx_ring->next_to_clean) - printk(KERN_CONT " NTC/U\n"); - else if (i == tx_ring->next_to_use) - printk(KERN_CONT " NTU\n"); - else if (i == tx_ring->next_to_clean) - printk(KERN_CONT " NTC\n"); - else - printk(KERN_CONT "\n"); - - if (netif_msg_pktdata(adapter) && buffer_info->dma != 0) - print_hex_dump(KERN_INFO, "", - DUMP_PREFIX_ADDRESS, - 16, 1, phys_to_virt(buffer_info->dma), - buffer_info->length, true); - } - } - - /* Print RX Rings Summary */ -rx_ring_summary: - dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); - printk(KERN_INFO "Queue [NTU] [NTC]\n"); - for (n = 0; n < adapter->num_rx_queues; n++) { - rx_ring = adapter->rx_ring[n]; - printk(KERN_INFO " %5d %5X %5X\n", n, - rx_ring->next_to_use, rx_ring->next_to_clean); - } - - /* Print RX Rings */ - if (!netif_msg_rx_status(adapter)) - goto exit; - - dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); - - /* Advanced Receive Descriptor (Read) Format - * 63 1 0 - * +-----------------------------------------------------+ - * 0 | Packet Buffer Address [63:1] |A0/NSE| - * +----------------------------------------------+------+ - * 8 | Header Buffer Address [63:1] | DD | - * +-----------------------------------------------------+ - * - * - * Advanced Receive Descriptor (Write-Back) Format - * - * 63 48 47 32 31 30 21 20 17 16 4 3 0 - * +------------------------------------------------------+ - * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS | - * | Checksum Ident | | | | Type | Type | - * +------------------------------------------------------+ - * 8 | VLAN Tag | Length | Extended Error | Extended Status | - * +------------------------------------------------------+ - * 63 48 47 32 31 20 19 0 - */ - - for (n = 0; n < adapter->num_rx_queues; n++) { - rx_ring = adapter->rx_ring[n]; - printk(KERN_INFO "------------------------------------\n"); - printk(KERN_INFO "RX QUEUE INDEX = %d\n", rx_ring->queue_index); - printk(KERN_INFO "------------------------------------\n"); - printk(KERN_INFO "R [desc] [ PktBuf A0] " - "[ HeadBuf DD] [bi->dma ] [bi->skb] " - "<-- Adv Rx Read format\n"); - printk(KERN_INFO "RWB[desc] [PcsmIpSHl PtRs] " - "[vl er S cks ln] ---------------- [bi->skb] " - "<-- Adv Rx Write-Back format\n"); - - for (i = 0; i < rx_ring->count; i++) { - buffer_info = &rx_ring->buffer_info[i]; - rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); - u0 = (struct my_u0 *)rx_desc; - staterr = le32_to_cpu(rx_desc->wb.upper.status_error); - if (staterr & E1000_RXD_STAT_DD) { - /* Descriptor Done */ - printk(KERN_INFO "RWB[0x%03X] %016llX " - "%016llX ---------------- %p", i, - le64_to_cpu(u0->a), - le64_to_cpu(u0->b), - buffer_info->skb); - } else { - printk(KERN_INFO "R [0x%03X] %016llX " - "%016llX %016llX %p", i, - le64_to_cpu(u0->a), - le64_to_cpu(u0->b), - (u64)buffer_info->dma, - buffer_info->skb); - - if (netif_msg_pktdata(adapter)) { - print_hex_dump(KERN_INFO, "", - DUMP_PREFIX_ADDRESS, - 16, 1, - phys_to_virt(buffer_info->dma), - rx_ring->rx_buffer_len, true); - if (rx_ring->rx_buffer_len - < IGB_RXBUFFER_1024) - print_hex_dump(KERN_INFO, "", - DUMP_PREFIX_ADDRESS, - 16, 1, - phys_to_virt( - buffer_info->page_dma + - buffer_info->page_offset), - PAGE_SIZE/2, true); - } - } - - if (i == rx_ring->next_to_use) - printk(KERN_CONT " NTU\n"); - else if (i == rx_ring->next_to_clean) - printk(KERN_CONT " NTC\n"); - else - printk(KERN_CONT "\n"); - - } - } - -exit: - return; -} - - -/** - * igb_read_clock - read raw cycle counter (to be used by time counter) - */ -static cycle_t igb_read_clock(const struct cyclecounter *tc) -{ - struct igb_adapter *adapter = - container_of(tc, struct igb_adapter, cycles); - struct e1000_hw *hw = &adapter->hw; - u64 stamp = 0; - int shift = 0; - - /* - * The timestamp latches on lowest register read. For the 82580 - * the lowest register is SYSTIMR instead of SYSTIML. However we never - * adjusted TIMINCA so SYSTIMR will just read as all 0s so ignore it. - */ - if (hw->mac.type == e1000_82580) { - stamp = rd32(E1000_SYSTIMR) >> 8; - shift = IGB_82580_TSYNC_SHIFT; - } - - stamp |= (u64)rd32(E1000_SYSTIML) << shift; - stamp |= (u64)rd32(E1000_SYSTIMH) << (shift + 32); - return stamp; -} - -/** - * igb_get_hw_dev - return device - * used by hardware layer to print debugging information - **/ -struct net_device *igb_get_hw_dev(struct e1000_hw *hw) -{ - struct igb_adapter *adapter = hw->back; - return adapter->netdev; -} - -/** - * 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 CONFIG_IGB_DCA - dca_register_notify(&dca_notifier); -#endif - ret = pci_register_driver(&igb_driver); - return ret; -} - -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 CONFIG_IGB_DCA - dca_unregister_notify(&dca_notifier); -#endif - pci_unregister_driver(&igb_driver); -} - -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->vfs_allocated_count) { - 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: - 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_free_queues(struct igb_adapter *adapter) -{ - int i; - - for (i = 0; i < adapter->num_tx_queues; i++) { - kfree(adapter->tx_ring[i]); - adapter->tx_ring[i] = NULL; - } - for (i = 0; i < adapter->num_rx_queues; i++) { - kfree(adapter->rx_ring[i]); - adapter->rx_ring[i] = NULL; - } - adapter->num_rx_queues = 0; - adapter->num_tx_queues = 0; -} - -/** - * igb_alloc_queues - Allocate memory for all rings - * @adapter: board private structure to initialize - * - * We allocate one ring per queue at run-time since we don't know the - * number of queues at compile-time. - **/ -static int igb_alloc_queues(struct igb_adapter *adapter) -{ - struct igb_ring *ring; - int i; - - for (i = 0; i < adapter->num_tx_queues; i++) { - ring = kzalloc(sizeof(struct igb_ring), GFP_KERNEL); - if (!ring) - goto err; - ring->count = adapter->tx_ring_count; - ring->queue_index = i; - ring->dev = &adapter->pdev->dev; - ring->netdev = adapter->netdev; - /* For 82575, context index must be unique per ring. */ - if (adapter->hw.mac.type == e1000_82575) - ring->flags = IGB_RING_FLAG_TX_CTX_IDX; - adapter->tx_ring[i] = ring; - } - - for (i = 0; i < adapter->num_rx_queues; i++) { - ring = kzalloc(sizeof(struct igb_ring), GFP_KERNEL); - if (!ring) - goto err; - ring->count = adapter->rx_ring_count; - ring->queue_index = i; - ring->dev = &adapter->pdev->dev; - ring->netdev = adapter->netdev; - ring->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; - ring->flags = IGB_RING_FLAG_RX_CSUM; /* enable rx checksum */ - /* set flag indicating ring supports SCTP checksum offload */ - if (adapter->hw.mac.type >= e1000_82576) - ring->flags |= IGB_RING_FLAG_RX_SCTP_CSUM; - adapter->rx_ring[i] = ring; - } - - igb_cache_ring_register(adapter); - - return 0; - -err: - igb_free_queues(adapter); - - return -ENOMEM; -} - -#define IGB_N0_QUEUE -1 -static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector) -{ - u32 msixbm = 0; - struct igb_adapter *adapter = q_vector->adapter; - struct e1000_hw *hw = &adapter->hw; - u32 ivar, index; - int rx_queue = IGB_N0_QUEUE; - int tx_queue = IGB_N0_QUEUE; - - 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; - array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); - q_vector->eims_value = msixbm; - break; - case e1000_82576: - /* 82576 uses a table-based method for assigning vectors. - Each queue has a single entry in the table to which we write - a vector number along with a "valid" bit. Sadly, the layout - of the table is somewhat counterintuitive. */ - if (rx_queue > IGB_N0_QUEUE) { - index = (rx_queue & 0x7); - ivar = array_rd32(E1000_IVAR0, index); - if (rx_queue < 8) { - /* vector goes into low byte of register */ - ivar = ivar & 0xFFFFFF00; - ivar |= msix_vector | E1000_IVAR_VALID; - } else { - /* vector goes into third byte of register */ - ivar = ivar & 0xFF00FFFF; - ivar |= (msix_vector | E1000_IVAR_VALID) << 16; - } - array_wr32(E1000_IVAR0, index, ivar); - } - if (tx_queue > IGB_N0_QUEUE) { - index = (tx_queue & 0x7); - ivar = array_rd32(E1000_IVAR0, index); - if (tx_queue < 8) { - /* vector goes into second byte of register */ - ivar = ivar & 0xFFFF00FF; - ivar |= (msix_vector | E1000_IVAR_VALID) << 8; - } else { - /* vector goes into high byte of register */ - ivar = ivar & 0x00FFFFFF; - ivar |= (msix_vector | E1000_IVAR_VALID) << 24; - } - array_wr32(E1000_IVAR0, index, ivar); - } - q_vector->eims_value = 1 << msix_vector; - break; - case e1000_82580: - case e1000_i350: - /* 82580 uses the same table-based approach as 82576 but has fewer - entries as a result we carry over for queues greater than 4. */ - if (rx_queue > IGB_N0_QUEUE) { - index = (rx_queue >> 1); - ivar = array_rd32(E1000_IVAR0, index); - if (rx_queue & 0x1) { - /* vector goes into third byte of register */ - ivar = ivar & 0xFF00FFFF; - ivar |= (msix_vector | E1000_IVAR_VALID) << 16; - } else { - /* vector goes into low byte of register */ - ivar = ivar & 0xFFFFFF00; - ivar |= msix_vector | E1000_IVAR_VALID; - } - array_wr32(E1000_IVAR0, index, ivar); - } - if (tx_queue > IGB_N0_QUEUE) { - index = (tx_queue >> 1); - ivar = array_rd32(E1000_IVAR0, index); - if (tx_queue & 0x1) { - /* vector goes into high byte of register */ - ivar = ivar & 0x00FFFFFF; - ivar |= (msix_vector | E1000_IVAR_VALID) << 24; - } else { - /* vector goes into second byte of register */ - ivar = ivar & 0xFFFF00FF; - ivar |= (msix_vector | E1000_IVAR_VALID) << 8; - } - array_wr32(E1000_IVAR0, index, ivar); - } - 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 = rd32(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; - - wr32(E1000_CTRL_EXT, tmp); - - /* enable msix_other interrupt */ - array_wr32(E1000_MSIXBM(0), vector++, - E1000_EIMS_OTHER); - adapter->eims_other = E1000_EIMS_OTHER; - - break; - - case e1000_82576: - case e1000_82580: - case e1000_i350: - /* Turn on MSI-X capability first, or our settings - * won't stick. And it will take days to debug. */ - wr32(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; - - wr32(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++); - - wrfl(); -} - -/** - * 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; - - err = request_irq(adapter->msix_entries[vector].vector, - igb_msix_other, 0, netdev->name, adapter); - if (err) - goto out; - vector++; - - for (i = 0; i < adapter->num_q_vectors; i++) { - struct igb_q_vector *q_vector = adapter->q_vector[i]; - - 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 out; - vector++; - } - - igb_configure_msix(adapter); - return 0; -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_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; - - for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { - struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; - adapter->q_vector[v_idx] = NULL; - if (!q_vector) - continue; - netif_napi_del(&q_vector->napi); - kfree(q_vector); - } - adapter->num_q_vectors = 0; -} - -/** - * 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_queues(adapter); - igb_free_q_vectors(adapter); - igb_reset_interrupt_capability(adapter); -} - -/** - * 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 int igb_set_interrupt_capability(struct igb_adapter *adapter) -{ - int err; - int numvecs, i; - - /* Number of supported queues. */ - adapter->num_rx_queues = adapter->rss_queues; - if (adapter->vfs_allocated_count) - adapter->num_tx_queues = 1; - else - adapter->num_tx_queues = adapter->rss_queues; - - /* 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) - goto msi_only; - - for (i = 0; i < numvecs; i++) - adapter->msix_entries[i].entry = i; - - err = pci_enable_msix(adapter->pdev, - adapter->msix_entries, - numvecs); - if (err == 0) - goto out; - - igb_reset_interrupt_capability(adapter); - - /* If we can't do MSI-X, try MSI */ -msi_only: -#ifdef CONFIG_PCI_IOV - /* disable SR-IOV for non MSI-X configurations */ - if (adapter->vf_data) { - struct e1000_hw *hw = &adapter->hw; - /* disable iov and allow time for transactions to clear */ - pci_disable_sriov(adapter->pdev); - msleep(500); - - kfree(adapter->vf_data); - adapter->vf_data = NULL; - wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); - wrfl(); - msleep(100); - dev_info(&adapter->pdev->dev, "IOV Disabled\n"); - } -#endif - adapter->vfs_allocated_count = 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; - if (!pci_enable_msi(adapter->pdev)) - adapter->flags |= IGB_FLAG_HAS_MSI; -out: - /* Notify the stack of the (possibly) reduced queue counts. */ - netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); - return netif_set_real_num_rx_queues(adapter->netdev, - adapter->num_rx_queues); -} - -/** - * 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) -{ - struct igb_q_vector *q_vector; - struct e1000_hw *hw = &adapter->hw; - int v_idx; - - for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { - q_vector = kzalloc(sizeof(struct igb_q_vector), GFP_KERNEL); - if (!q_vector) - goto err_out; - q_vector->adapter = adapter; - q_vector->itr_register = hw->hw_addr + E1000_EITR(0); - q_vector->itr_val = IGB_START_ITR; - netif_napi_add(adapter->netdev, &q_vector->napi, igb_poll, 64); - adapter->q_vector[v_idx] = q_vector; - } - return 0; - -err_out: - igb_free_q_vectors(adapter); - return -ENOMEM; -} - -static void igb_map_rx_ring_to_vector(struct igb_adapter *adapter, - int ring_idx, int v_idx) -{ - struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; - - q_vector->rx_ring = adapter->rx_ring[ring_idx]; - q_vector->rx_ring->q_vector = q_vector; - q_vector->itr_val = adapter->rx_itr_setting; - if (q_vector->itr_val && q_vector->itr_val <= 3) - q_vector->itr_val = IGB_START_ITR; -} - -static void igb_map_tx_ring_to_vector(struct igb_adapter *adapter, - int ring_idx, int v_idx) -{ - struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; - - q_vector->tx_ring = adapter->tx_ring[ring_idx]; - q_vector->tx_ring->q_vector = q_vector; - q_vector->itr_val = adapter->tx_itr_setting; - if (q_vector->itr_val && q_vector->itr_val <= 3) - q_vector->itr_val = IGB_START_ITR; -} - -/** - * igb_map_ring_to_vector - maps allocated queues to vectors - * - * This function maps the recently allocated queues to vectors. - **/ -static int igb_map_ring_to_vector(struct igb_adapter *adapter) -{ - int i; - int v_idx = 0; - - if ((adapter->num_q_vectors < adapter->num_rx_queues) || - (adapter->num_q_vectors < adapter->num_tx_queues)) - return -ENOMEM; - - if (adapter->num_q_vectors >= - (adapter->num_rx_queues + adapter->num_tx_queues)) { - for (i = 0; i < adapter->num_rx_queues; i++) - igb_map_rx_ring_to_vector(adapter, i, v_idx++); - for (i = 0; i < adapter->num_tx_queues; i++) - igb_map_tx_ring_to_vector(adapter, i, v_idx++); - } else { - for (i = 0; i < adapter->num_rx_queues; i++) { - if (i < adapter->num_tx_queues) - igb_map_tx_ring_to_vector(adapter, i, v_idx); - igb_map_rx_ring_to_vector(adapter, i, v_idx++); - } - for (; i < adapter->num_tx_queues; i++) - igb_map_tx_ring_to_vector(adapter, i, v_idx++); - } - return 0; -} - -/** - * 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) -{ - struct pci_dev *pdev = adapter->pdev; - int err; - - err = igb_set_interrupt_capability(adapter); - if (err) - return err; - - err = igb_alloc_q_vectors(adapter); - if (err) { - dev_err(&pdev->dev, "Unable to allocate memory for vectors\n"); - goto err_alloc_q_vectors; - } - - err = igb_alloc_queues(adapter); - if (err) { - dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); - goto err_alloc_queues; - } - - err = igb_map_ring_to_vector(adapter); - if (err) { - dev_err(&pdev->dev, "Invalid q_vector to ring mapping\n"); - goto err_map_queues; - } - - - return 0; -err_map_queues: - igb_free_queues(adapter); -err_alloc_queues: - igb_free_q_vectors(adapter); -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_clear_interrupt_scheme(adapter); - if (!pci_enable_msi(adapter->pdev)) - adapter->flags |= IGB_FLAG_HAS_MSI; - igb_free_all_tx_resources(adapter); - igb_free_all_rx_resources(adapter); - adapter->num_tx_queues = 1; - adapter->num_rx_queues = 1; - adapter->num_q_vectors = 1; - err = igb_alloc_q_vectors(adapter); - if (err) { - dev_err(&pdev->dev, - "Unable to allocate memory for vectors\n"); - goto request_done; - } - err = igb_alloc_queues(adapter); - if (err) { - dev_err(&pdev->dev, - "Unable to allocate memory for queues\n"); - igb_free_q_vectors(adapter); - goto request_done; - } - igb_setup_all_tx_resources(adapter); - igb_setup_all_rx_resources(adapter); - } else { - igb_assign_vector(adapter->q_vector[0], 0); - } - - if (adapter->flags & IGB_FLAG_HAS_MSI) { - err = request_irq(adapter->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(adapter->pdev->irq, igb_intr, IRQF_SHARED, - netdev->name, adapter); - - if (err) - dev_err(&adapter->pdev->dev, "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++) { - struct igb_q_vector *q_vector = adapter->q_vector[i]; - free_irq(adapter->msix_entries[vector++].vector, - q_vector); - } - } 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 = rd32(E1000_EIAM); - wr32(E1000_EIAM, regval & ~adapter->eims_enable_mask); - wr32(E1000_EIMC, adapter->eims_enable_mask); - regval = rd32(E1000_EIAC); - wr32(E1000_EIAC, regval & ~adapter->eims_enable_mask); - } - - wr32(E1000_IAM, 0); - wr32(E1000_IMC, ~0); - wrfl(); - if (adapter->msix_entries) { - int i; - for (i = 0; i < adapter->num_q_vectors; i++) - synchronize_irq(adapter->msix_entries[i].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; - u32 regval = rd32(E1000_EIAC); - wr32(E1000_EIAC, regval | adapter->eims_enable_mask); - regval = rd32(E1000_EIAM); - wr32(E1000_EIAM, regval | adapter->eims_enable_mask); - wr32(E1000_EIMS, adapter->eims_enable_mask); - if (adapter->vfs_allocated_count) { - wr32(E1000_MBVFIMR, 0xFF); - ims |= E1000_IMS_VMMB; - } - if (adapter->hw.mac.type == e1000_82580) - ims |= E1000_IMS_DRSTA; - - wr32(E1000_IMS, ims); - } else { - wr32(E1000_IMS, IMS_ENABLE_MASK | - E1000_IMS_DRSTA); - wr32(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(hw, 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) && - !test_bit(old_vid, adapter->active_vlans)) { - /* remove VID from filter table */ - igb_vfta_set(hw, 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 = rd32(E1000_CTRL_EXT); - wr32(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 = rd32(E1000_CTRL_EXT); - wr32(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); - - igb_rx_fifo_flush_82575(&adapter->hw); - - /* 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_adv(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) -{ - if (adapter->hw.phy.media_type == e1000_media_type_copper) - igb_power_up_phy_copper(&adapter->hw); - else - igb_power_up_serdes_link_82575(&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) - igb_power_down_phy_copper_82575(&adapter->hw); - else - igb_shutdown_serdes_link_82575(&adapter->hw); -} - -/** - * 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++) { - struct igb_q_vector *q_vector = adapter->q_vector[i]; - napi_enable(&q_vector->napi); - } - if (adapter->msix_entries) - igb_configure_msix(adapter); - else - igb_assign_vector(adapter->q_vector[0], 0); - - /* Clear any pending interrupts. */ - rd32(E1000_ICR); - igb_irq_enable(adapter); - - /* notify VFs that reset has been completed */ - if (adapter->vfs_allocated_count) { - u32 reg_data = rd32(E1000_CTRL_EXT); - reg_data |= E1000_CTRL_EXT_PFRSTD; - wr32(E1000_CTRL_EXT, reg_data); - } - - netif_tx_start_all_queues(adapter->netdev); - - /* start the watchdog. */ - hw->mac.get_link_status = 1; - schedule_work(&adapter->watchdog_task); - - 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 = rd32(E1000_RCTL); - wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); - /* flush and sleep below */ - - netif_tx_stop_all_queues(netdev); - - /* disable transmits in the hardware */ - tctl = rd32(E1000_TCTL); - tctl &= ~E1000_TCTL_EN; - wr32(E1000_TCTL, tctl); - /* flush both disables and wait for them to finish */ - wrfl(); - msleep(10); - - for (i = 0; i < adapter->num_q_vectors; i++) { - struct igb_q_vector *q_vector = adapter->q_vector[i]; - napi_disable(&q_vector->napi); - } - - igb_irq_disable(adapter); - - del_timer_sync(&adapter->watchdog_timer); - del_timer_sync(&adapter->phy_info_timer); - - netif_carrier_off(netdev); - - /* record the stats before reset*/ - spin_lock(&adapter->stats64_lock); - igb_update_stats(adapter, &adapter->stats64); - spin_unlock(&adapter->stats64_lock); - - adapter->link_speed = 0; - adapter->link_duplex = 0; - - if (!pci_channel_offline(adapter->pdev)) - igb_reset(adapter); - igb_clean_all_tx_rings(adapter); - igb_clean_all_rx_rings(adapter); -#ifdef CONFIG_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)) - msleep(1); - igb_down(adapter); - igb_up(adapter); - clear_bit(__IGB_RESETTING, &adapter->state); -} - -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; - u16 hwm; - - /* Repartition Pba for greater than 9k mtu - * To take effect CTRL.RST is required. - */ - switch (mac->type) { - case e1000_i350: - case e1000_82580: - pba = rd32(E1000_RXPBS); - pba = igb_rxpbs_adjust_82580(pba); - break; - case e1000_82576: - pba = rd32(E1000_RXPBS); - pba &= E1000_RXPBS_SIZE_MASK_82576; - break; - case e1000_82575: - 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 */ - wr32(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 = rd32(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; - } - wr32(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 & 0xFFF0; /* 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; - 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 */ - wr32(E1000_VFRE, 0); - wr32(E1000_VFTE, 0); - } - - /* Allow time for pending master requests to run */ - hw->mac.ops.reset_hw(hw); - wr32(E1000_WUC, 0); - - if (hw->mac.ops.init_hw(hw)) - dev_err(&pdev->dev, "Hardware Error\n"); - if (hw->mac.type > e1000_82580) { - if (adapter->flags & IGB_FLAG_DMAC) { - u32 reg; - - /* - * DMA Coalescing high water mark needs to be higher - * than * the * Rx threshold. The Rx threshold is - * currently * pba - 6, so we * should use a high water - * mark of pba * - 4. */ - hwm = (pba - 4) << 10; - - reg = (((pba-6) << 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); - - /* watchdog timer= +-1000 usec in 32usec intervals */ - reg |= (1000 >> 5); - wr32(E1000_DMACR, reg); - - /* no lower threshold to disable coalescing(smart fifb) - * -UTRESH=0*/ - wr32(E1000_DMCRTRH, 0); - - /* set hwm to PBA - 2 * max frame size */ - wr32(E1000_FCRTC, hwm); - - /* - * This sets the time to wait before requesting tran- - * sition to * low power state to number of usecs needed - * to receive 1 512 * byte frame at gigabit line rate - */ - reg = rd32(E1000_DMCTLX); - reg |= IGB_DMCTLX_DCFLUSH_DIS; - - /* Delay 255 usec before entering Lx state. */ - reg |= 0xFF; - wr32(E1000_DMCTLX, reg); - - /* free space in Tx packet buffer to wake from DMAC */ - wr32(E1000_DMCTXTH, - (IGB_MIN_TXPBSIZE - - (IGB_TX_BUF_4096 + adapter->max_frame_size)) - >> 6); - - /* make low power state decision controlled by DMAC */ - reg = rd32(E1000_PCIEMISC); - reg |= E1000_PCIEMISC_LX_DECISION; - wr32(E1000_PCIEMISC, reg); - } /* end if IGB_FLAG_DMAC set */ - } - if (hw->mac.type == e1000_82580) { - u32 reg = rd32(E1000_PCIEMISC); - wr32(E1000_PCIEMISC, - reg & ~E1000_PCIEMISC_LX_DECISION); - } - 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 */ - wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); - - igb_get_phy_info(hw); -} - -static u32 igb_fix_features(struct net_device *netdev, u32 features) -{ - /* - * Since there is no support for separate rx/tx vlan accel - * enable/disable make sure tx flag is always in same state as rx. - */ - if (features & NETIF_F_HW_VLAN_RX) - features |= NETIF_F_HW_VLAN_TX; - else - features &= ~NETIF_F_HW_VLAN_TX; - - return features; -} - -static int igb_set_features(struct net_device *netdev, u32 features) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - int i; - u32 changed = netdev->features ^ features; - - for (i = 0; i < adapter->num_rx_queues; i++) { - if (features & NETIF_F_RXCSUM) - adapter->rx_ring[i]->flags |= IGB_RING_FLAG_RX_CSUM; - else - adapter->rx_ring[i]->flags &= ~IGB_RING_FLAG_RX_CSUM; - } - - if (changed & NETIF_F_HW_VLAN_RX) - igb_vlan_mode(netdev, features); - - return 0; -} - -static const struct net_device_ops igb_netdev_ops = { - .ndo_open = igb_open, - .ndo_stop = igb_close, - .ndo_start_xmit = igb_xmit_frame_adv, - .ndo_get_stats64 = igb_get_stats64, - .ndo_set_rx_mode = igb_set_rx_mode, - .ndo_set_multicast_list = 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, - .ndo_set_vf_mac = igb_ndo_set_vf_mac, - .ndo_set_vf_vlan = igb_ndo_set_vf_vlan, - .ndo_set_vf_tx_rate = igb_ndo_set_vf_bw, - .ndo_get_vf_config = igb_ndo_get_vf_config, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = igb_netpoll, -#endif - .ndo_fix_features = igb_fix_features, - .ndo_set_features = igb_set_features, -}; - -/** - * 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; - s32 ret_val; - static int global_quad_port_a; /* global quad port a indication */ - const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; - unsigned long mmio_start, mmio_len; - int err, pci_using_dac; - u16 eeprom_apme_mask = IGB_EEPROM_APME; - u8 part_str[E1000_PBANUM_LENGTH]; - - /* Catch broken hardware that put the wrong VF device ID in - * the PCIe SR-IOV capability. - */ - if (pdev->is_virtfn) { - WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", - pci_name(pdev), pdev->vendor, pdev->device); - return -EINVAL; - } - - err = pci_enable_device_mem(pdev); - if (err) - return err; - - pci_using_dac = 0; - err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); - if (!err) { - err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); - if (!err) - pci_using_dac = 1; - } else { - err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (err) { - err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, "No usable DMA " - "configuration, aborting\n"); - goto err_dma; - } - } - } - - 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); - pci_save_state(pdev); - - err = -ENOMEM; - netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), - IGB_ABS_MAX_TX_QUEUES); - if (!netdev) - goto err_alloc_etherdev; - - 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->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; - - mmio_start = pci_resource_start(pdev, 0); - mmio_len = pci_resource_len(pdev, 0); - - err = -EIO; - hw->hw_addr = ioremap(mmio_start, mmio_len); - if (!hw->hw_addr) - goto err_ioremap; - - netdev->netdev_ops = &igb_netdev_ops; - igb_set_ethtool_ops(netdev); - netdev->watchdog_timeo = 5 * HZ; - - strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); - - netdev->mem_start = mmio_start; - netdev->mem_end = mmio_start + mmio_len; - - /* PCI config space info */ - hw->vendor_id = pdev->vendor; - hw->device_id = pdev->device; - hw->revision_id = pdev->revision; - hw->subsystem_vendor_id = pdev->subsystem_vendor; - hw->subsystem_device_id = pdev->subsystem_device; - - /* Copy the default MAC, PHY and NVM function pointers */ - memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); - memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); - memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); - /* Initialize skew-specific constants */ - err = ei->get_invariants(hw); - if (err) - goto err_sw_init; - - /* setup the private structure */ - err = igb_sw_init(adapter); - if (err) - goto err_sw_init; - - igb_get_bus_info_pcie(hw); - - hw->phy.autoneg_wait_to_complete = 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 (igb_check_reset_block(hw)) - dev_info(&pdev->dev, - "PHY reset is blocked due to SOL/IDER session.\n"); - - netdev->hw_features = NETIF_F_SG | - NETIF_F_IP_CSUM | - NETIF_F_IPV6_CSUM | - NETIF_F_TSO | - NETIF_F_TSO6 | - NETIF_F_RXCSUM | - NETIF_F_HW_VLAN_RX; - - netdev->features = netdev->hw_features | - NETIF_F_HW_VLAN_TX | - NETIF_F_HW_VLAN_FILTER; - - netdev->vlan_features |= NETIF_F_TSO; - netdev->vlan_features |= NETIF_F_TSO6; - netdev->vlan_features |= NETIF_F_IP_CSUM; - netdev->vlan_features |= NETIF_F_IPV6_CSUM; - netdev->vlan_features |= NETIF_F_SG; - - if (pci_using_dac) { - netdev->features |= NETIF_F_HIGHDMA; - netdev->vlan_features |= NETIF_F_HIGHDMA; - } - - if (hw->mac.type >= e1000_82576) { - netdev->hw_features |= NETIF_F_SCTP_CSUM; - netdev->features |= NETIF_F_SCTP_CSUM; - } - - adapter->en_mng_pt = igb_enable_mng_pass_thru(hw); - - /* before reading the NVM, reset the controller to put the device in a - * known good starting state */ - hw->mac.ops.reset_hw(hw); - - /* make sure the NVM is good */ - if (hw->nvm.ops.validate(hw) < 0) { - dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); - err = -EIO; - goto err_eeprom; - } - - /* copy the MAC address out of the NVM */ - if (hw->mac.ops.read_mac_addr(hw)) - dev_err(&pdev->dev, "NVM Read Error\n"); - - memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); - memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); - - if (!is_valid_ether_addr(netdev->perm_addr)) { - dev_err(&pdev->dev, "Invalid MAC Address\n"); - err = -EIO; - goto err_eeprom; - } - - setup_timer(&adapter->watchdog_timer, igb_watchdog, - (unsigned long) adapter); - setup_timer(&adapter->phy_info_timer, igb_update_phy_info, - (unsigned long) adapter); - - INIT_WORK(&adapter->reset_task, igb_reset_task); - INIT_WORK(&adapter->watchdog_task, igb_watchdog_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; - - igb_validate_mdi_setting(hw); - - /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM, - * enable the ACPI Magic Packet filter - */ - - if (hw->bus.func == 0) - hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); - else 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) - hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); - - if (eeprom_data & eeprom_apme_mask) - adapter->eeprom_wol |= E1000_WUFC_MAG; - - /* 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->eeprom_wol = 0; - 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 (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) - adapter->eeprom_wol = 0; - 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->eeprom_wol = 0; - 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; - } - - /* initialize the wol settings based on the eeprom settings */ - adapter->wol = adapter->eeprom_wol; - device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); - - /* reset the hardware with the new settings */ - 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); - - strcpy(netdev->name, "eth%d"); - err = register_netdev(netdev); - if (err) - goto err_register; - - igb_vlan_mode(netdev, netdev->features); - - /* carrier off reporting is important to ethtool even BEFORE open */ - netif_carrier_off(netdev); - -#ifdef CONFIG_IGB_DCA - if (dca_add_requester(&pdev->dev) == 0) { - adapter->flags |= IGB_FLAG_DCA_ENABLED; - dev_info(&pdev->dev, "DCA enabled\n"); - igb_setup_dca(adapter); - } - -#endif - /* do hw tstamp init after resetting */ - igb_init_hw_timer(adapter); - - dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); - /* print bus type/speed/width info */ - dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", - netdev->name, - ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" : - (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" : - "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" : - "unknown"), - netdev->dev_addr); - - ret_val = igb_read_part_string(hw, part_str, E1000_PBANUM_LENGTH); - if (ret_val) - strcpy(part_str, "Unknown"); - dev_info(&pdev->dev, "%s: PBA No: %s\n", netdev->name, part_str); - dev_info(&pdev->dev, - "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); - switch (hw->mac.type) { - case e1000_i350: - igb_set_eee_i350(hw); - break; - default: - break; - } - return 0; - -err_register: - igb_release_hw_control(adapter); -err_eeprom: - if (!igb_check_reset_block(hw)) - igb_reset_phy(hw); - - if (hw->flash_address) - iounmap(hw->flash_address); -err_sw_init: - igb_clear_interrupt_scheme(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; -} - -/** - * 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; - - /* - * The watchdog timer may be rescheduled, so explicitly - * disable watchdog from being rescheduled. - */ - set_bit(__IGB_DOWN, &adapter->state); - del_timer_sync(&adapter->watchdog_timer); - del_timer_sync(&adapter->phy_info_timer); - - cancel_work_sync(&adapter->reset_task); - cancel_work_sync(&adapter->watchdog_task); - -#ifdef CONFIG_IGB_DCA - if (adapter->flags & IGB_FLAG_DCA_ENABLED) { - dev_info(&pdev->dev, "DCA disabled\n"); - dca_remove_requester(&pdev->dev); - adapter->flags &= ~IGB_FLAG_DCA_ENABLED; - wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_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); - - igb_clear_interrupt_scheme(adapter); - -#ifdef CONFIG_PCI_IOV - /* reclaim resources allocated to VFs */ - if (adapter->vf_data) { - /* disable iov and allow time for transactions to clear */ - pci_disable_sriov(pdev); - msleep(500); - - kfree(adapter->vf_data); - adapter->vf_data = NULL; - wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); - wrfl(); - msleep(100); - dev_info(&pdev->dev, "IOV Disabled\n"); - } -#endif - - iounmap(hw->hw_addr); - if (hw->flash_address) - iounmap(hw->flash_address); - pci_release_selected_regions(pdev, - pci_select_bars(pdev, IORESOURCE_MEM)); - - free_netdev(netdev); - - pci_disable_pcie_error_reporting(pdev); - - pci_disable_device(pdev); -} - -/** - * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space - * @adapter: board private structure to initialize - * - * This function initializes the vf specific data storage and then attempts to - * allocate the VFs. The reason for ordering it this way is because it is much - * mor expensive time wise to disable SR-IOV than it is to allocate and free - * the memory for the VFs. - **/ -static void __devinit igb_probe_vfs(struct igb_adapter * adapter) -{ -#ifdef CONFIG_PCI_IOV - struct pci_dev *pdev = adapter->pdev; - - if (adapter->vfs_allocated_count) { - adapter->vf_data = kcalloc(adapter->vfs_allocated_count, - sizeof(struct vf_data_storage), - GFP_KERNEL); - /* if allocation failed then we do not support SR-IOV */ - if (!adapter->vf_data) { - adapter->vfs_allocated_count = 0; - dev_err(&pdev->dev, "Unable to allocate memory for VF " - "Data Storage\n"); - } - } - - if (pci_enable_sriov(pdev, adapter->vfs_allocated_count)) { - kfree(adapter->vf_data); - adapter->vf_data = NULL; -#endif /* CONFIG_PCI_IOV */ - adapter->vfs_allocated_count = 0; -#ifdef CONFIG_PCI_IOV - } else { - unsigned char mac_addr[ETH_ALEN]; - int i; - dev_info(&pdev->dev, "%d vfs allocated\n", - adapter->vfs_allocated_count); - for (i = 0; i < adapter->vfs_allocated_count; i++) { - random_ether_addr(mac_addr); - igb_set_vf_mac(adapter, i, mac_addr); - } - /* DMA Coalescing is not supported in IOV mode. */ - if (adapter->flags & IGB_FLAG_DMAC) - adapter->flags &= ~IGB_FLAG_DMAC; - } -#endif /* CONFIG_PCI_IOV */ -} - - -/** - * igb_init_hw_timer - Initialize hardware timer used with IEEE 1588 timestamp - * @adapter: board private structure to initialize - * - * igb_init_hw_timer initializes the function pointer and values for the hw - * timer found in hardware. - **/ -static void igb_init_hw_timer(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - - switch (hw->mac.type) { - case e1000_i350: - case e1000_82580: - memset(&adapter->cycles, 0, sizeof(adapter->cycles)); - adapter->cycles.read = igb_read_clock; - adapter->cycles.mask = CLOCKSOURCE_MASK(64); - adapter->cycles.mult = 1; - /* - * The 82580 timesync updates the system timer every 8ns by 8ns - * and the value cannot be shifted. Instead we need to shift - * the registers to generate a 64bit timer value. As a result - * SYSTIMR/L/H, TXSTMPL/H, RXSTMPL/H all have to be shifted by - * 24 in order to generate a larger value for synchronization. - */ - adapter->cycles.shift = IGB_82580_TSYNC_SHIFT; - /* disable system timer temporarily by setting bit 31 */ - wr32(E1000_TSAUXC, 0x80000000); - wrfl(); - - /* Set registers so that rollover occurs soon to test this. */ - wr32(E1000_SYSTIMR, 0x00000000); - wr32(E1000_SYSTIML, 0x80000000); - wr32(E1000_SYSTIMH, 0x000000FF); - wrfl(); - - /* enable system timer by clearing bit 31 */ - wr32(E1000_TSAUXC, 0x0); - wrfl(); - - timecounter_init(&adapter->clock, - &adapter->cycles, - ktime_to_ns(ktime_get_real())); - /* - * Synchronize our NIC clock against system wall clock. NIC - * time stamp reading requires ~3us per sample, each sample - * was pretty stable even under load => only require 10 - * samples for each offset comparison. - */ - memset(&adapter->compare, 0, sizeof(adapter->compare)); - adapter->compare.source = &adapter->clock; - adapter->compare.target = ktime_get_real; - adapter->compare.num_samples = 10; - timecompare_update(&adapter->compare, 0); - break; - case e1000_82576: - /* - * Initialize hardware timer: we keep it running just in case - * that some program needs it later on. - */ - memset(&adapter->cycles, 0, sizeof(adapter->cycles)); - adapter->cycles.read = igb_read_clock; - adapter->cycles.mask = CLOCKSOURCE_MASK(64); - adapter->cycles.mult = 1; - /** - * Scale the NIC clock cycle by a large factor so that - * relatively small clock corrections can be added or - * subtracted at each clock tick. The drawbacks of a large - * factor are a) that the clock register overflows more quickly - * (not such a big deal) and b) that the increment per tick has - * to fit into 24 bits. As a result we need to use a shift of - * 19 so we can fit a value of 16 into the TIMINCA register. - */ - adapter->cycles.shift = IGB_82576_TSYNC_SHIFT; - wr32(E1000_TIMINCA, - (1 << E1000_TIMINCA_16NS_SHIFT) | - (16 << IGB_82576_TSYNC_SHIFT)); - - /* Set registers so that rollover occurs soon to test this. */ - wr32(E1000_SYSTIML, 0x00000000); - wr32(E1000_SYSTIMH, 0xFF800000); - wrfl(); - - timecounter_init(&adapter->clock, - &adapter->cycles, - ktime_to_ns(ktime_get_real())); - /* - * Synchronize our NIC clock against system wall clock. NIC - * time stamp reading requires ~3us per sample, each sample - * was pretty stable even under load => only require 10 - * samples for each offset comparison. - */ - memset(&adapter->compare, 0, sizeof(adapter->compare)); - adapter->compare.source = &adapter->clock; - adapter->compare.target = ktime_get_real; - adapter->compare.num_samples = 10; - timecompare_update(&adapter->compare, 0); - break; - case e1000_82575: - /* 82575 does not support timesync */ - default: - break; - } - -} - -/** - * 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 __devinit 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_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); - - adapter->tx_ring_count = IGB_DEFAULT_TXD; - adapter->rx_ring_count = IGB_DEFAULT_RXD; - adapter->rx_itr_setting = IGB_DEFAULT_ITR; - adapter->tx_itr_setting = IGB_DEFAULT_ITR; - - adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; - adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; - - spin_lock_init(&adapter->stats64_lock); -#ifdef CONFIG_PCI_IOV - switch (hw->mac.type) { - case e1000_82576: - case e1000_i350: - if (max_vfs > 7) { - dev_warn(&pdev->dev, - "Maximum of 7 VFs per PF, using max\n"); - adapter->vfs_allocated_count = 7; - } else - adapter->vfs_allocated_count = max_vfs; - break; - default: - break; - } -#endif /* CONFIG_PCI_IOV */ - adapter->rss_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus()); - /* i350 cannot do RSS and SR-IOV at the same time */ - if (hw->mac.type == e1000_i350 && adapter->vfs_allocated_count) - adapter->rss_queues = 1; - - /* - * if rss_queues > 4 or vfs are going to be allocated with rss_queues - * then we should combine the queues into a queue pair in order to - * conserve interrupts due to limited supply - */ - if ((adapter->rss_queues > 4) || - ((adapter->rss_queues > 1) && (adapter->vfs_allocated_count > 6))) - adapter->flags |= IGB_FLAG_QUEUE_PAIRS; - - /* This call may decrease the number of queues */ - if (igb_init_interrupt_scheme(adapter)) { - dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); - return -ENOMEM; - } - - igb_probe_vfs(adapter); - - /* Explicitly disable IRQ since the NIC can be in any state. */ - igb_irq_disable(adapter); - - if (hw->mac.type == e1000_i350) - adapter->flags &= ~IGB_FLAG_DMAC; - - set_bit(__IGB_DOWN, &adapter->state); - 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) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - int err; - int i; - - /* disallow open during test */ - if (test_bit(__IGB_TESTING, &adapter->state)) - return -EBUSY; - - 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; - - /* 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++) { - struct igb_q_vector *q_vector = adapter->q_vector[i]; - napi_enable(&q_vector->napi); - } - - /* Clear any pending interrupts. */ - rd32(E1000_ICR); - - igb_irq_enable(adapter); - - /* notify VFs that reset has been completed */ - if (adapter->vfs_allocated_count) { - u32 reg_data = rd32(E1000_CTRL_EXT); - reg_data |= E1000_CTRL_EXT_PFRSTD; - wr32(E1000_CTRL_EXT, reg_data); - } - - netif_tx_start_all_queues(netdev); - - /* start the watchdog. */ - hw->mac.get_link_status = 1; - schedule_work(&adapter->watchdog_task); - - return 0; - -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); - - return err; -} - -/** - * 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) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - - WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); - igb_down(adapter); - - igb_free_irq(adapter); - - igb_free_all_tx_resources(adapter); - igb_free_all_rx_resources(adapter); - - return 0; -} - -/** - * 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_buffer) * tx_ring->count; - tx_ring->buffer_info = vzalloc(size); - if (!tx_ring->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->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(&pdev->dev, - "Allocation for Tx Queue %u failed\n", i); - for (i--; i >= 0; i--) - igb_free_tx_resources(adapter->tx_ring[i]); - break; - } - } - - for (i = 0; i < IGB_ABS_MAX_TX_QUEUES; i++) { - int r_idx = i % adapter->num_tx_queues; - adapter->multi_tx_table[i] = adapter->tx_ring[r_idx]; - } - 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 */ - wr32(E1000_TXDCTL(0), 0); - - /* Program the Transmit Control Register */ - tctl = rd32(E1000_TCTL); - tctl &= ~E1000_TCTL_CT; - tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | - (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); - - igb_config_collision_dist(hw); - - /* Enable transmits */ - tctl |= E1000_TCTL_EN; - - wr32(E1000_TCTL, tctl); -} - -/** - * 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; - u64 tdba = ring->dma; - int reg_idx = ring->reg_idx; - - /* disable the queue */ - txdctl = rd32(E1000_TXDCTL(reg_idx)); - wr32(E1000_TXDCTL(reg_idx), - txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); - wrfl(); - mdelay(10); - - wr32(E1000_TDLEN(reg_idx), - ring->count * sizeof(union e1000_adv_tx_desc)); - wr32(E1000_TDBAL(reg_idx), - tdba & 0x00000000ffffffffULL); - wr32(E1000_TDBAH(reg_idx), tdba >> 32); - - ring->head = hw->hw_addr + E1000_TDH(reg_idx); - ring->tail = hw->hw_addr + E1000_TDT(reg_idx); - writel(0, ring->head); - writel(0, ring->tail); - - txdctl |= IGB_TX_PTHRESH; - txdctl |= IGB_TX_HTHRESH << 8; - txdctl |= IGB_TX_WTHRESH << 16; - - txdctl |= E1000_TXDCTL_QUEUE_ENABLE; - wr32(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_buffer) * rx_ring->count; - rx_ring->buffer_info = vzalloc(size); - if (!rx_ring->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_clean = 0; - rx_ring->next_to_use = 0; - - return 0; - -err: - vfree(rx_ring->buffer_info); - rx_ring->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(&pdev->dev, - "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; - union e1000_reta { - u32 dword; - u8 bytes[4]; - } reta; - static const u8 rsshash[40] = { - 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, 0x41, 0x67, - 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, 0xd0, 0xca, 0x2b, 0xcb, - 0xae, 0x7b, 0x30, 0xb4, 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, - 0xf2, 0x0c, 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa }; - - /* Fill out hash function seeds */ - for (j = 0; j < 10; j++) { - u32 rsskey = rsshash[(j * 4)]; - rsskey |= rsshash[(j * 4) + 1] << 8; - rsskey |= rsshash[(j * 4) + 2] << 16; - rsskey |= rsshash[(j * 4) + 3] << 24; - array_wr32(E1000_RSSRK(0), j, rsskey); - } - - num_rx_queues = adapter->rss_queues; - - if (adapter->vfs_allocated_count) { - /* 82575 and 82576 supports 2 RSS queues for VMDq */ - switch (hw->mac.type) { - case e1000_i350: - case e1000_82580: - num_rx_queues = 1; - shift = 0; - break; - case e1000_82576: - shift = 3; - num_rx_queues = 2; - break; - case e1000_82575: - shift = 2; - shift2 = 6; - default: - break; - } - } else { - if (hw->mac.type == e1000_82575) - shift = 6; - } - - for (j = 0; j < (32 * 4); j++) { - reta.bytes[j & 3] = (j % num_rx_queues) << shift; - if (shift2) - reta.bytes[j & 3] |= num_rx_queues << shift2; - if ((j & 3) == 3) - wr32(E1000_RETA(j >> 2), reta.dword); - } - - /* - * 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 = rd32(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 */ - wr32(E1000_RXCSUM, rxcsum); - - /* 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) { - if (hw->mac.type > e1000_82575) { - /* Set the default pool for the PF's first queue */ - u32 vtctl = rd32(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; - wr32(E1000_VT_CTL, vtctl); - } - 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); - - /* - * Generate RSS hash based on TCP port numbers and/or - * IPv4/v6 src and dst addresses since UDP cannot be - * hashed reliably due to IP fragmentation - */ - 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; - - wr32(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 = rd32(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 */ - wr32(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 */ - wr32(E1000_QDE, ALL_QUEUES); - } - - wr32(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_TAG_SIZE; - - vmolr = rd32(E1000_VMOLR(vfn)); - vmolr &= ~E1000_VMOLR_RLPML_MASK; - vmolr |= size | E1000_VMOLR_LPE; - wr32(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; - struct e1000_hw *hw = &adapter->hw; - u16 pf_id = adapter->vfs_allocated_count; - - max_frame_size = adapter->max_frame_size + VLAN_TAG_SIZE; - - /* if vfs are enabled we set RLPML to the largest possible request - * size and set the VMOLR RLPML to the size we need */ - if (pf_id) { - igb_set_vf_rlpml(adapter, max_frame_size, pf_id); - max_frame_size = MAX_JUMBO_FRAME_SIZE; - } - - wr32(E1000_RLPML, max_frame_size); -} - -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 = rd32(E1000_VMOLR(vfn)); - vmolr |= E1000_VMOLR_STRVLAN; /* Strip vlan tags */ - 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_BAM | E1000_VMOLR_RSSE); - - if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count) - vmolr |= E1000_VMOLR_RSSE; /* enable RSS */ - /* - * for VMDq only allow the VFs and pool 0 to accept broadcast and - * multicast packets - */ - if (vfn <= adapter->vfs_allocated_count) - vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */ - - wr32(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, rxdctl; - - /* disable the queue */ - rxdctl = rd32(E1000_RXDCTL(reg_idx)); - wr32(E1000_RXDCTL(reg_idx), - rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); - - /* Set DMA base address registers */ - wr32(E1000_RDBAL(reg_idx), - rdba & 0x00000000ffffffffULL); - wr32(E1000_RDBAH(reg_idx), rdba >> 32); - wr32(E1000_RDLEN(reg_idx), - ring->count * sizeof(union e1000_adv_rx_desc)); - - /* initialize head and tail */ - ring->head = hw->hw_addr + E1000_RDH(reg_idx); - ring->tail = hw->hw_addr + E1000_RDT(reg_idx); - writel(0, ring->head); - writel(0, ring->tail); - - /* set descriptor configuration */ - if (ring->rx_buffer_len < IGB_RXBUFFER_1024) { - srrctl = ALIGN(ring->rx_buffer_len, 64) << - E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; -#if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 - srrctl |= IGB_RXBUFFER_16384 >> - E1000_SRRCTL_BSIZEPKT_SHIFT; -#else - srrctl |= (PAGE_SIZE / 2) >> - E1000_SRRCTL_BSIZEPKT_SHIFT; -#endif - srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; - } else { - srrctl = ALIGN(ring->rx_buffer_len, 1024) >> - E1000_SRRCTL_BSIZEPKT_SHIFT; - srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; - } - if (hw->mac.type == e1000_82580) - srrctl |= E1000_SRRCTL_TIMESTAMP; - /* Only set Drop Enable if we are supporting multiple queues */ - if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1) - srrctl |= E1000_SRRCTL_DROP_EN; - - wr32(E1000_SRRCTL(reg_idx), srrctl); - - /* set filtering for VMDQ pools */ - igb_set_vmolr(adapter, reg_idx & 0x7, true); - - /* enable receive descriptor fetching */ - rxdctl = rd32(E1000_RXDCTL(reg_idx)); - rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; - rxdctl &= 0xFFF00000; - rxdctl |= IGB_RX_PTHRESH; - rxdctl |= IGB_RX_HTHRESH << 8; - rxdctl |= IGB_RX_WTHRESH << 16; - wr32(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); - - /* set the correct pool for the PF default MAC address in entry 0 */ - igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0, - adapter->vfs_allocated_count); - - /* 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->buffer_info); - tx_ring->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 *tx_ring, - struct igb_buffer *buffer_info) -{ - if (buffer_info->dma) { - if (buffer_info->mapped_as_page) - dma_unmap_page(tx_ring->dev, - buffer_info->dma, - buffer_info->length, - DMA_TO_DEVICE); - else - dma_unmap_single(tx_ring->dev, - buffer_info->dma, - buffer_info->length, - DMA_TO_DEVICE); - buffer_info->dma = 0; - } - if (buffer_info->skb) { - dev_kfree_skb_any(buffer_info->skb); - buffer_info->skb = NULL; - } - buffer_info->time_stamp = 0; - buffer_info->length = 0; - buffer_info->next_to_watch = 0; - buffer_info->mapped_as_page = false; -} - -/** - * 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_buffer *buffer_info; - unsigned long size; - unsigned int i; - - if (!tx_ring->buffer_info) - return; - /* Free all the Tx ring sk_buffs */ - - for (i = 0; i < tx_ring->count; i++) { - buffer_info = &tx_ring->buffer_info[i]; - igb_unmap_and_free_tx_resource(tx_ring, buffer_info); - } - - size = sizeof(struct igb_buffer) * tx_ring->count; - memset(tx_ring->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->buffer_info); - rx_ring->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 - **/ -static void igb_clean_rx_ring(struct igb_ring *rx_ring) -{ - struct igb_buffer *buffer_info; - unsigned long size; - unsigned int i; - - if (!rx_ring->buffer_info) - return; - - /* Free all the Rx ring sk_buffs */ - for (i = 0; i < rx_ring->count; i++) { - buffer_info = &rx_ring->buffer_info[i]; - 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; - } - if (buffer_info->page_dma) { - dma_unmap_page(rx_ring->dev, - buffer_info->page_dma, - PAGE_SIZE / 2, - DMA_FROM_DEVICE); - buffer_info->page_dma = 0; - } - if (buffer_info->page) { - put_page(buffer_info->page); - buffer_info->page = NULL; - buffer_info->page_offset = 0; - } - } - - size = sizeof(struct igb_buffer) * rx_ring->count; - memset(rx_ring->buffer_info, 0, size); - - /* Zero out the descriptor ring */ - memset(rx_ring->desc, 0, rx_ring->size); - - 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; - - 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 */ - igb_rar_set_qsel(adapter, hw->mac.addr, 0, - adapter->vfs_allocated_count); - - return 0; -} - -/** - * 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 - **/ -static int igb_write_mc_addr_list(struct net_device *netdev) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - struct netdev_hw_addr *ha; - u8 *mta_list; - int i; - - if (netdev_mc_empty(netdev)) { - /* nothing to program, so clear mc list */ - igb_update_mc_addr_list(hw, NULL, 0); - igb_restore_vf_multicasts(adapter); - return 0; - } - - mta_list = kzalloc(netdev_mc_count(netdev) * 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) - memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); - - igb_update_mc_addr_list(hw, mta_list, i); - kfree(mta_list); - - return netdev_mc_count(netdev); -} - -/** - * 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); - struct e1000_hw *hw = &adapter->hw; - unsigned int vfn = adapter->vfs_allocated_count; - unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1); - int count = 0; - - /* return ENOMEM indicating insufficient memory for addresses */ - if (netdev_uc_count(netdev) > rar_entries) - return -ENOMEM; - - if (!netdev_uc_empty(netdev) && rar_entries) { - struct netdev_hw_addr *ha; - - netdev_for_each_uc_addr(ha, netdev) { - if (!rar_entries) - break; - igb_rar_set_qsel(adapter, ha->addr, - rar_entries--, - vfn); - count++; - } - } - /* write the addresses in reverse order to avoid write combining */ - for (; rar_entries > 0 ; rar_entries--) { - wr32(E1000_RAH(rar_entries), 0); - wr32(E1000_RAL(rar_entries), 0); - } - wrfl(); - - return count; -} - -/** - * 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 = rd32(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); - } 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; - } - } - /* - * 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; - } - rctl |= E1000_RCTL_VFE; - } - wr32(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 |= rd32(E1000_VMOLR(vfn)) & - ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE); - wr32(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 = rd32(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; - - for(j = 0; j < adapter->vfs_allocated_count; j++) { - if (adapter->wvbr & (1 << j) || - adapter->wvbr & (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))) { - dev_warn(&adapter->pdev->dev, - "Spoof event(s) detected on VF %d\n", j); - adapter->wvbr &= - ~((1 << j) | - (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))); - } - } -} - -/* Need to wait a few seconds after link up to get diagnostic information from - * the phy */ -static void igb_update_phy_info(unsigned long data) -{ - struct igb_adapter *adapter = (struct igb_adapter *) data; - igb_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; - s32 ret_val = 0; - - /* 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) { - ret_val = hw->mac.ops.check_for_link(hw); - link_active = !hw->mac.get_link_status; - } else { - link_active = true; - } - break; - case e1000_media_type_internal_serdes: - ret_val = hw->mac.ops.check_for_link(hw); - link_active = hw->mac.serdes_has_link; - break; - default: - case e1000_media_type_unknown: - break; - } - - return link_active; -} - -static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event) -{ - bool ret = false; - u32 ctrl_ext, thstat; - - /* check for thermal sensor event on i350, copper only */ - if (hw->mac.type == e1000_i350) { - thstat = rd32(E1000_THSTAT); - ctrl_ext = rd32(E1000_CTRL_EXT); - - if ((hw->phy.media_type == e1000_media_type_copper) && - !(ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII)) { - ret = !!(thstat & event); - } - } - - return ret; -} - -/** - * igb_watchdog - Timer Call-back - * @data: pointer to adapter cast into an unsigned long - **/ -static void igb_watchdog(unsigned long data) -{ - struct igb_adapter *adapter = (struct igb_adapter *)data; - /* 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; - - link = igb_has_link(adapter); - if (link) { - if (!netif_carrier_ok(netdev)) { - u32 ctrl; - hw->mac.ops.get_speed_and_duplex(hw, - &adapter->link_speed, - &adapter->link_duplex); - - ctrl = rd32(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"))); - - /* check for thermal sensor event */ - if (igb_thermal_sensor_event(hw, E1000_THSTAT_LINK_THROTTLE)) { - printk(KERN_INFO "igb: %s The network adapter " - "link speed was downshifted " - "because it overheated.\n", - netdev->name); - } - - /* 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; - } - - netif_carrier_on(netdev); - - igb_ping_all_vfs(adapter); - igb_check_vf_rate_limit(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)); - } - } else { - if (netif_carrier_ok(netdev)) { - adapter->link_speed = 0; - adapter->link_duplex = 0; - - /* check for thermal sensor event */ - if (igb_thermal_sensor_event(hw, E1000_THSTAT_PWR_DOWN)) { - printk(KERN_ERR "igb: %s The network adapter " - "was stopped 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); - - 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)); - } - } - - spin_lock(&adapter->stats64_lock); - igb_update_stats(adapter, &adapter->stats64); - spin_unlock(&adapter->stats64_lock); - - 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 */ - tx_ring->detect_tx_hung = true; - } - - /* 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++) { - struct igb_q_vector *q_vector = adapter->q_vector[i]; - eics |= q_vector->eims_value; - } - wr32(E1000_EICS, eics); - } else { - wr32(E1000_ICS, E1000_ICS_RXDMT0); - } - - igb_spoof_check(adapter); - - /* Reset the timer */ - if (!test_bit(__IGB_DOWN, &adapter->state)) - mod_timer(&adapter->watchdog_timer, - round_jiffies(jiffies + 2 * HZ)); -} - -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; - struct igb_ring *ring; - unsigned int packets; - - /* For non-gigabit speeds, just fix the interrupt rate at 4000 - * ints/sec - ITR timer value of 120 ticks. - */ - if (adapter->link_speed != SPEED_1000) { - new_val = 976; - goto set_itr_val; - } - - ring = q_vector->rx_ring; - if (ring) { - packets = ACCESS_ONCE(ring->total_packets); - - if (packets) - avg_wire_size = ring->total_bytes / packets; - } - - ring = q_vector->tx_ring; - if (ring) { - packets = ACCESS_ONCE(ring->total_packets); - - if (packets) - avg_wire_size = max_t(u32, avg_wire_size, - ring->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; - - /* when in itr mode 3 do not exceed 20K ints/sec */ - if (adapter->rx_itr_setting == 3 && new_val < 196) - new_val = 196; - -set_itr_val: - if (new_val != q_vector->itr_val) { - q_vector->itr_val = new_val; - q_vector->set_itr = 1; - } -clear_counts: - if (q_vector->rx_ring) { - q_vector->rx_ring->total_bytes = 0; - q_vector->rx_ring->total_packets = 0; - } - if (q_vector->tx_ring) { - q_vector->tx_ring->total_bytes = 0; - q_vector->tx_ring->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. - * @adapter: pointer to adapter - * @itr_setting: current q_vector->itr_val - * @packets: the number of packets during this measurement interval - * @bytes: the number of bytes during this measurement interval - **/ -static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting, - int packets, int bytes) -{ - unsigned int retval = itr_setting; - - if (packets == 0) - goto update_itr_done; - - switch (itr_setting) { - case lowest_latency: - /* handle TSO and jumbo frames */ - if (bytes/packets > 8000) - retval = bulk_latency; - else if ((packets < 5) && (bytes > 512)) - retval = 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) { - retval = bulk_latency; - } else if ((packets < 10) || ((bytes/packets) > 1200)) { - retval = bulk_latency; - } else if ((packets > 35)) { - retval = lowest_latency; - } - } else if (bytes/packets > 2000) { - retval = bulk_latency; - } else if (packets <= 2 && bytes < 512) { - retval = lowest_latency; - } - break; - case bulk_latency: /* 250 usec aka 4000 ints/s */ - if (bytes > 25000) { - if (packets > 35) - retval = low_latency; - } else if (bytes < 1500) { - retval = low_latency; - } - break; - } - -update_itr_done: - return retval; -} - -static void igb_set_itr(struct igb_adapter *adapter) -{ - struct igb_q_vector *q_vector = adapter->q_vector[0]; - u16 current_itr; - u32 new_itr = q_vector->itr_val; - - /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ - if (adapter->link_speed != SPEED_1000) { - current_itr = 0; - new_itr = 4000; - goto set_itr_now; - } - - adapter->rx_itr = igb_update_itr(adapter, - adapter->rx_itr, - q_vector->rx_ring->total_packets, - q_vector->rx_ring->total_bytes); - - adapter->tx_itr = igb_update_itr(adapter, - adapter->tx_itr, - q_vector->tx_ring->total_packets, - q_vector->tx_ring->total_bytes); - current_itr = max(adapter->rx_itr, adapter->tx_itr); - - /* conservative mode (itr 3) eliminates the lowest_latency setting */ - if (adapter->rx_itr_setting == 3 && current_itr == lowest_latency) - current_itr = low_latency; - - switch (current_itr) { - /* counts and packets in update_itr are dependent on these numbers */ - case lowest_latency: - new_itr = 56; /* aka 70,000 ints/sec */ - break; - case low_latency: - new_itr = 196; /* aka 20,000 ints/sec */ - break; - case bulk_latency: - new_itr = 980; /* aka 4,000 ints/sec */ - break; - default: - break; - } - -set_itr_now: - q_vector->rx_ring->total_bytes = 0; - q_vector->rx_ring->total_packets = 0; - q_vector->tx_ring->total_bytes = 0; - q_vector->tx_ring->total_packets = 0; - - 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; - } -} - -#define IGB_TX_FLAGS_CSUM 0x00000001 -#define IGB_TX_FLAGS_VLAN 0x00000002 -#define IGB_TX_FLAGS_TSO 0x00000004 -#define IGB_TX_FLAGS_IPV4 0x00000008 -#define IGB_TX_FLAGS_TSTAMP 0x00000010 -#define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 -#define IGB_TX_FLAGS_VLAN_SHIFT 16 - -static inline int igb_tso_adv(struct igb_ring *tx_ring, - struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) -{ - struct e1000_adv_tx_context_desc *context_desc; - unsigned int i; - int err; - struct igb_buffer *buffer_info; - u32 info = 0, tu_cmd = 0; - u32 mss_l4len_idx; - u8 l4len; - - if (skb_header_cloned(skb)) { - err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); - if (err) - return err; - } - - l4len = tcp_hdrlen(skb); - *hdr_len += l4len; - - if (skb->protocol == 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); - } 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); - } - - i = tx_ring->next_to_use; - - buffer_info = &tx_ring->buffer_info[i]; - context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); - /* VLAN MACLEN IPLEN */ - if (tx_flags & IGB_TX_FLAGS_VLAN) - info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); - info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); - *hdr_len += skb_network_offset(skb); - info |= skb_network_header_len(skb); - *hdr_len += skb_network_header_len(skb); - context_desc->vlan_macip_lens = cpu_to_le32(info); - - /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ - tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); - - if (skb->protocol == htons(ETH_P_IP)) - tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; - - context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); - - /* MSS L4LEN IDX */ - mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); - mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); - - /* For 82575, context index must be unique per ring. */ - if (tx_ring->flags & IGB_RING_FLAG_TX_CTX_IDX) - mss_l4len_idx |= tx_ring->reg_idx << 4; - - context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); - context_desc->seqnum_seed = 0; - - buffer_info->time_stamp = jiffies; - buffer_info->next_to_watch = i; - buffer_info->dma = 0; - i++; - if (i == tx_ring->count) - i = 0; - - tx_ring->next_to_use = i; - - return true; -} - -static inline bool igb_tx_csum_adv(struct igb_ring *tx_ring, - struct sk_buff *skb, u32 tx_flags) -{ - struct e1000_adv_tx_context_desc *context_desc; - struct device *dev = tx_ring->dev; - struct igb_buffer *buffer_info; - u32 info = 0, tu_cmd = 0; - unsigned int i; - - if ((skb->ip_summed == CHECKSUM_PARTIAL) || - (tx_flags & IGB_TX_FLAGS_VLAN)) { - i = tx_ring->next_to_use; - buffer_info = &tx_ring->buffer_info[i]; - context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); - - if (tx_flags & IGB_TX_FLAGS_VLAN) - info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); - - info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); - if (skb->ip_summed == CHECKSUM_PARTIAL) - info |= skb_network_header_len(skb); - - context_desc->vlan_macip_lens = cpu_to_le32(info); - - tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); - - if (skb->ip_summed == CHECKSUM_PARTIAL) { - __be16 protocol; - - if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) { - const struct vlan_ethhdr *vhdr = - (const struct vlan_ethhdr*)skb->data; - - protocol = vhdr->h_vlan_encapsulated_proto; - } else { - protocol = skb->protocol; - } - - switch (protocol) { - case cpu_to_be16(ETH_P_IP): - tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; - if (ip_hdr(skb)->protocol == IPPROTO_TCP) - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; - else if (ip_hdr(skb)->protocol == IPPROTO_SCTP) - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; - break; - case cpu_to_be16(ETH_P_IPV6): - /* XXX what about other V6 headers?? */ - if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; - else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP) - tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; - break; - default: - if (unlikely(net_ratelimit())) - dev_warn(dev, - "partial checksum but proto=%x!\n", - skb->protocol); - break; - } - } - - context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); - context_desc->seqnum_seed = 0; - if (tx_ring->flags & IGB_RING_FLAG_TX_CTX_IDX) - context_desc->mss_l4len_idx = - cpu_to_le32(tx_ring->reg_idx << 4); - - buffer_info->time_stamp = jiffies; - buffer_info->next_to_watch = i; - buffer_info->dma = 0; - - i++; - if (i == tx_ring->count) - i = 0; - tx_ring->next_to_use = i; - - return true; - } - return false; -} - -#define IGB_MAX_TXD_PWR 16 -#define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR) - -static inline int igb_tx_map_adv(struct igb_ring *tx_ring, struct sk_buff *skb, - unsigned int first) -{ - struct igb_buffer *buffer_info; - struct device *dev = tx_ring->dev; - unsigned int hlen = skb_headlen(skb); - unsigned int count = 0, i; - unsigned int f; - u16 gso_segs = skb_shinfo(skb)->gso_segs ?: 1; - - i = tx_ring->next_to_use; - - buffer_info = &tx_ring->buffer_info[i]; - BUG_ON(hlen >= IGB_MAX_DATA_PER_TXD); - buffer_info->length = hlen; - /* set time_stamp *before* dma to help avoid a possible race */ - buffer_info->time_stamp = jiffies; - buffer_info->next_to_watch = i; - buffer_info->dma = dma_map_single(dev, skb->data, hlen, - DMA_TO_DEVICE); - if (dma_mapping_error(dev, buffer_info->dma)) - goto dma_error; - - for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { - struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[f]; - unsigned int len = frag->size; - - count++; - i++; - if (i == tx_ring->count) - i = 0; - - buffer_info = &tx_ring->buffer_info[i]; - BUG_ON(len >= IGB_MAX_DATA_PER_TXD); - buffer_info->length = len; - buffer_info->time_stamp = jiffies; - buffer_info->next_to_watch = i; - buffer_info->mapped_as_page = true; - buffer_info->dma = dma_map_page(dev, - frag->page, - frag->page_offset, - len, - DMA_TO_DEVICE); - if (dma_mapping_error(dev, buffer_info->dma)) - goto dma_error; - - } - - tx_ring->buffer_info[i].skb = skb; - tx_ring->buffer_info[i].tx_flags = skb_shinfo(skb)->tx_flags; - /* multiply data chunks by size of headers */ - tx_ring->buffer_info[i].bytecount = ((gso_segs - 1) * hlen) + skb->len; - tx_ring->buffer_info[i].gso_segs = gso_segs; - tx_ring->buffer_info[first].next_to_watch = i; - - return ++count; - -dma_error: - dev_err(dev, "TX DMA map failed\n"); - - /* clear timestamp and dma mappings for failed buffer_info mapping */ - buffer_info->dma = 0; - buffer_info->time_stamp = 0; - buffer_info->length = 0; - buffer_info->next_to_watch = 0; - buffer_info->mapped_as_page = false; - - /* clear timestamp and dma mappings for remaining portion of packet */ - while (count--) { - if (i == 0) - i = tx_ring->count; - i--; - buffer_info = &tx_ring->buffer_info[i]; - igb_unmap_and_free_tx_resource(tx_ring, buffer_info); - } - - return 0; -} - -static inline void igb_tx_queue_adv(struct igb_ring *tx_ring, - u32 tx_flags, int count, u32 paylen, - u8 hdr_len) -{ - union e1000_adv_tx_desc *tx_desc; - struct igb_buffer *buffer_info; - u32 olinfo_status = 0, cmd_type_len; - unsigned int i = tx_ring->next_to_use; - - cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | - E1000_ADVTXD_DCMD_DEXT); - - if (tx_flags & IGB_TX_FLAGS_VLAN) - cmd_type_len |= E1000_ADVTXD_DCMD_VLE; - - if (tx_flags & IGB_TX_FLAGS_TSTAMP) - cmd_type_len |= E1000_ADVTXD_MAC_TSTAMP; - - if (tx_flags & IGB_TX_FLAGS_TSO) { - cmd_type_len |= E1000_ADVTXD_DCMD_TSE; - - /* insert tcp checksum */ - olinfo_status |= E1000_TXD_POPTS_TXSM << 8; - - /* insert ip checksum */ - if (tx_flags & IGB_TX_FLAGS_IPV4) - olinfo_status |= E1000_TXD_POPTS_IXSM << 8; - - } else if (tx_flags & IGB_TX_FLAGS_CSUM) { - olinfo_status |= E1000_TXD_POPTS_TXSM << 8; - } - - if ((tx_ring->flags & IGB_RING_FLAG_TX_CTX_IDX) && - (tx_flags & (IGB_TX_FLAGS_CSUM | - IGB_TX_FLAGS_TSO | - IGB_TX_FLAGS_VLAN))) - olinfo_status |= tx_ring->reg_idx << 4; - - olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); - - do { - buffer_info = &tx_ring->buffer_info[i]; - tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); - tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); - tx_desc->read.cmd_type_len = - cpu_to_le32(cmd_type_len | buffer_info->length); - tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); - count--; - i++; - if (i == tx_ring->count) - i = 0; - } while (count > 0); - - tx_desc->read.cmd_type_len |= cpu_to_le32(IGB_ADVTXD_DCMD); - /* 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(); - - 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(); -} - -static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, int size) -{ - struct net_device *netdev = tx_ring->netdev; - - netif_stop_subqueue(netdev, tx_ring->queue_index); - - /* 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! */ - netif_wake_subqueue(netdev, tx_ring->queue_index); - - u64_stats_update_begin(&tx_ring->tx_syncp2); - tx_ring->tx_stats.restart_queue2++; - u64_stats_update_end(&tx_ring->tx_syncp2); - - return 0; -} - -static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, int 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_adv(struct sk_buff *skb, - struct igb_ring *tx_ring) -{ - int tso = 0, count; - u32 tx_flags = 0; - u16 first; - u8 hdr_len = 0; - - /* need: 1 descriptor per page, - * + 2 desc gap to keep tail from touching head, - * + 1 desc for skb->data, - * + 1 desc for context descriptor, - * otherwise try next time */ - if (igb_maybe_stop_tx(tx_ring, skb_shinfo(skb)->nr_frags + 4)) { - /* this is a hard error */ - return NETDEV_TX_BUSY; - } - - if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { - skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; - tx_flags |= IGB_TX_FLAGS_TSTAMP; - } - - if (vlan_tx_tag_present(skb)) { - tx_flags |= IGB_TX_FLAGS_VLAN; - tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); - } - - if (skb->protocol == htons(ETH_P_IP)) - tx_flags |= IGB_TX_FLAGS_IPV4; - - first = tx_ring->next_to_use; - if (skb_is_gso(skb)) { - tso = igb_tso_adv(tx_ring, skb, tx_flags, &hdr_len); - - if (tso < 0) { - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - } - - if (tso) - tx_flags |= IGB_TX_FLAGS_TSO; - else if (igb_tx_csum_adv(tx_ring, skb, tx_flags) && - (skb->ip_summed == CHECKSUM_PARTIAL)) - tx_flags |= IGB_TX_FLAGS_CSUM; - - /* - * count reflects descriptors mapped, if 0 or less then mapping error - * has occurred and we need to rewind the descriptor queue - */ - count = igb_tx_map_adv(tx_ring, skb, first); - if (!count) { - dev_kfree_skb_any(skb); - tx_ring->buffer_info[first].time_stamp = 0; - tx_ring->next_to_use = first; - return NETDEV_TX_OK; - } - - igb_tx_queue_adv(tx_ring, tx_flags, count, skb->len, hdr_len); - - /* Make sure there is space in the ring for the next send. */ - igb_maybe_stop_tx(tx_ring, MAX_SKB_FRAGS + 4); - - return NETDEV_TX_OK; -} - -static netdev_tx_t igb_xmit_frame_adv(struct sk_buff *skb, - struct net_device *netdev) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct igb_ring *tx_ring; - int r_idx = 0; - - 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; - } - - r_idx = skb->queue_mapping & (IGB_ABS_MAX_TX_QUEUES - 1); - tx_ring = adapter->multi_tx_table[r_idx]; - - /* This goes back to the question of how to logically map a tx queue - * to a flow. Right now, performance is impacted slightly negatively - * if using multiple tx queues. If the stack breaks away from a - * single qdisc implementation, we can look at this again. */ - return igb_xmit_frame_ring_adv(skb, tx_ring); -} - -/** - * 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); - wr32(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_dump(adapter); - netdev_err(adapter->netdev, "Reset adapter\n"); - igb_reinit_locked(adapter); -} - -/** - * igb_get_stats64 - Get System Network Statistics - * @netdev: network interface device structure - * @stats: rtnl_link_stats64 pointer - * - **/ -static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *netdev, - struct rtnl_link_stats64 *stats) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - - spin_lock(&adapter->stats64_lock); - igb_update_stats(adapter, &adapter->stats64); - memcpy(stats, &adapter->stats64, sizeof(*stats)); - spin_unlock(&adapter->stats64_lock); - - return stats; -} - -/** - * 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 pci_dev *pdev = adapter->pdev; - int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; - u32 rx_buffer_len, i; - - if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { - dev_err(&pdev->dev, "Invalid MTU setting\n"); - return -EINVAL; - } - - if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { - dev_err(&pdev->dev, "MTU > 9216 not supported.\n"); - return -EINVAL; - } - - while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) - msleep(1); - - /* igb_down has a dependency on max_frame_size */ - adapter->max_frame_size = max_frame; - - /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN - * means we reserve 2 more, this pushes us to allocate from the next - * larger slab size. - * i.e. RXBUFFER_2048 --> size-4096 slab - */ - - if (adapter->hw.mac.type == e1000_82580) - max_frame += IGB_TS_HDR_LEN; - - if (max_frame <= IGB_RXBUFFER_1024) - rx_buffer_len = IGB_RXBUFFER_1024; - else if (max_frame <= MAXIMUM_ETHERNET_VLAN_SIZE) - rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; - else - rx_buffer_len = IGB_RXBUFFER_128; - - if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN + IGB_TS_HDR_LEN) || - (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE + IGB_TS_HDR_LEN)) - rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE + IGB_TS_HDR_LEN; - - if ((adapter->hw.mac.type == e1000_82580) && - (rx_buffer_len == IGB_RXBUFFER_128)) - rx_buffer_len += IGB_RXBUFFER_64; - - if (netif_running(netdev)) - igb_down(adapter); - - dev_info(&pdev->dev, "changing MTU from %d to %d\n", - netdev->mtu, new_mtu); - netdev->mtu = new_mtu; - - for (i = 0; i < adapter->num_rx_queues; i++) - adapter->rx_ring[i]->rx_buffer_len = rx_buffer_len; - - 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, - struct rtnl_link_stats64 *net_stats) -{ - struct e1000_hw *hw = &adapter->hw; - struct pci_dev *pdev = adapter->pdev; - u32 reg, mpc; - u16 phy_tmp; - int i; - u64 bytes, packets; - unsigned int start; - u64 _bytes, _packets; - -#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF - - /* - * Prevent stats update while adapter is being reset, or if the pci - * connection is down. - */ - if (adapter->link_speed == 0) - return; - if (pci_channel_offline(pdev)) - return; - - bytes = 0; - packets = 0; - for (i = 0; i < adapter->num_rx_queues; i++) { - u32 rqdpc_tmp = rd32(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; - - do { - start = u64_stats_fetch_begin_bh(&ring->rx_syncp); - _bytes = ring->rx_stats.bytes; - _packets = ring->rx_stats.packets; - } while (u64_stats_fetch_retry_bh(&ring->rx_syncp, start)); - bytes += _bytes; - packets += _packets; - } - - 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]; - do { - start = u64_stats_fetch_begin_bh(&ring->tx_syncp); - _bytes = ring->tx_stats.bytes; - _packets = ring->tx_stats.packets; - } while (u64_stats_fetch_retry_bh(&ring->tx_syncp, start)); - bytes += _bytes; - packets += _packets; - } - net_stats->tx_bytes = bytes; - net_stats->tx_packets = packets; - - /* read stats registers */ - adapter->stats.crcerrs += rd32(E1000_CRCERRS); - adapter->stats.gprc += rd32(E1000_GPRC); - adapter->stats.gorc += rd32(E1000_GORCL); - rd32(E1000_GORCH); /* clear GORCL */ - adapter->stats.bprc += rd32(E1000_BPRC); - adapter->stats.mprc += rd32(E1000_MPRC); - adapter->stats.roc += rd32(E1000_ROC); - - adapter->stats.prc64 += rd32(E1000_PRC64); - adapter->stats.prc127 += rd32(E1000_PRC127); - adapter->stats.prc255 += rd32(E1000_PRC255); - adapter->stats.prc511 += rd32(E1000_PRC511); - adapter->stats.prc1023 += rd32(E1000_PRC1023); - adapter->stats.prc1522 += rd32(E1000_PRC1522); - adapter->stats.symerrs += rd32(E1000_SYMERRS); - adapter->stats.sec += rd32(E1000_SEC); - - mpc = rd32(E1000_MPC); - adapter->stats.mpc += mpc; - net_stats->rx_fifo_errors += mpc; - adapter->stats.scc += rd32(E1000_SCC); - adapter->stats.ecol += rd32(E1000_ECOL); - adapter->stats.mcc += rd32(E1000_MCC); - adapter->stats.latecol += rd32(E1000_LATECOL); - adapter->stats.dc += rd32(E1000_DC); - adapter->stats.rlec += rd32(E1000_RLEC); - adapter->stats.xonrxc += rd32(E1000_XONRXC); - adapter->stats.xontxc += rd32(E1000_XONTXC); - adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); - adapter->stats.xofftxc += rd32(E1000_XOFFTXC); - adapter->stats.fcruc += rd32(E1000_FCRUC); - adapter->stats.gptc += rd32(E1000_GPTC); - adapter->stats.gotc += rd32(E1000_GOTCL); - rd32(E1000_GOTCH); /* clear GOTCL */ - adapter->stats.rnbc += rd32(E1000_RNBC); - adapter->stats.ruc += rd32(E1000_RUC); - adapter->stats.rfc += rd32(E1000_RFC); - adapter->stats.rjc += rd32(E1000_RJC); - adapter->stats.tor += rd32(E1000_TORH); - adapter->stats.tot += rd32(E1000_TOTH); - adapter->stats.tpr += rd32(E1000_TPR); - - adapter->stats.ptc64 += rd32(E1000_PTC64); - adapter->stats.ptc127 += rd32(E1000_PTC127); - adapter->stats.ptc255 += rd32(E1000_PTC255); - adapter->stats.ptc511 += rd32(E1000_PTC511); - adapter->stats.ptc1023 += rd32(E1000_PTC1023); - adapter->stats.ptc1522 += rd32(E1000_PTC1522); - - adapter->stats.mptc += rd32(E1000_MPTC); - adapter->stats.bptc += rd32(E1000_BPTC); - - adapter->stats.tpt += rd32(E1000_TPT); - adapter->stats.colc += rd32(E1000_COLC); - - adapter->stats.algnerrc += rd32(E1000_ALGNERRC); - /* read internal phy specific stats */ - reg = rd32(E1000_CTRL_EXT); - if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) { - adapter->stats.rxerrc += rd32(E1000_RXERRC); - adapter->stats.tncrs += rd32(E1000_TNCRS); - } - - adapter->stats.tsctc += rd32(E1000_TSCTC); - adapter->stats.tsctfc += rd32(E1000_TSCTFC); - - adapter->stats.iac += rd32(E1000_IAC); - adapter->stats.icrxoc += rd32(E1000_ICRXOC); - adapter->stats.icrxptc += rd32(E1000_ICRXPTC); - adapter->stats.icrxatc += rd32(E1000_ICRXATC); - adapter->stats.ictxptc += rd32(E1000_ICTXPTC); - adapter->stats.ictxatc += rd32(E1000_ICTXATC); - adapter->stats.ictxqec += rd32(E1000_ICTXQEC); - adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); - adapter->stats.icrxdmtc += rd32(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) && - (!igb_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 += rd32(E1000_MGTPTC); - adapter->stats.mgprc += rd32(E1000_MGTPRC); - adapter->stats.mgpdc += rd32(E1000_MGTPDC); - - /* OS2BMC Stats */ - reg = rd32(E1000_MANC); - if (reg & E1000_MANC_EN_BMC2OS) { - adapter->stats.o2bgptc += rd32(E1000_O2BGPTC); - adapter->stats.o2bspc += rd32(E1000_O2BSPC); - adapter->stats.b2ospc += rd32(E1000_B2OSPC); - adapter->stats.b2ogprc += rd32(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 = rd32(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); - } - - if (adapter->vfs_allocated_count) - wr32(E1000_IMS, E1000_IMS_LSC | - E1000_IMS_VMMB | - E1000_IMS_DOUTSYNC); - else - wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC); - wr32(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 |= 0x8000000; - - 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 CONFIG_IGB_DCA -static void igb_update_dca(struct igb_q_vector *q_vector) -{ - struct igb_adapter *adapter = q_vector->adapter; - struct e1000_hw *hw = &adapter->hw; - int cpu = get_cpu(); - - if (q_vector->cpu == cpu) - goto out_no_update; - - if (q_vector->tx_ring) { - int q = q_vector->tx_ring->reg_idx; - u32 dca_txctrl = rd32(E1000_DCA_TXCTRL(q)); - if (hw->mac.type == e1000_82575) { - dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK; - dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); - } else { - dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576; - dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << - E1000_DCA_TXCTRL_CPUID_SHIFT; - } - dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN; - wr32(E1000_DCA_TXCTRL(q), dca_txctrl); - } - if (q_vector->rx_ring) { - int q = q_vector->rx_ring->reg_idx; - u32 dca_rxctrl = rd32(E1000_DCA_RXCTRL(q)); - if (hw->mac.type == e1000_82575) { - dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK; - dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); - } else { - dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576; - dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << - E1000_DCA_RXCTRL_CPUID_SHIFT; - } - dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN; - dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN; - dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN; - wr32(E1000_DCA_RXCTRL(q), dca_rxctrl); - } - 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. */ - wr32(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) == 0) { - adapter->flags |= IGB_FLAG_DCA_ENABLED; - dev_info(&pdev->dev, "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(&pdev->dev, "DCA disabled\n"); - adapter->flags &= ~IGB_FLAG_DCA_ENABLED; - wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); - } - break; - } - - return 0; -} - -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 /* CONFIG_IGB_DCA */ - -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; - igb_write_mbx(hw, &ping, 1, i); - } -} - -static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) -{ - struct e1000_hw *hw = &adapter->hw; - u32 vmolr = rd32(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); - - 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(hw, vf_data->vf_mc_hashes[j]); - } - } - - wr32(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 = rd32(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(hw, vf_data->vf_mc_hashes[j]); - } - wr32(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; - 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 = rd32(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(hw, vid, false); - } - - wr32(E1000_VLVF(i), reg); - } - - adapter->vf_data[vf].vlans_enabled = 0; -} - -static 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->vfs_allocated_count) - return -1; - - /* Find the vlan filter for this id */ - for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { - reg = rd32(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 = rd32(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(hw, vid, true); - reg |= E1000_VLVF_VLANID_ENABLE; - } - reg &= ~E1000_VLVF_VLANID_MASK; - reg |= vid; - wr32(E1000_VLVF(i), reg); - - /* do not modify RLPML for PF devices */ - if (vf >= adapter->vfs_allocated_count) - return 0; - - if (!adapter->vf_data[vf].vlans_enabled) { - u32 size; - reg = rd32(E1000_VMOLR(vf)); - size = reg & E1000_VMOLR_RLPML_MASK; - size += 4; - reg &= ~E1000_VMOLR_RLPML_MASK; - reg |= size; - wr32(E1000_VMOLR(vf), reg); - } - - adapter->vf_data[vf].vlans_enabled++; - return 0; - } - } 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(hw, vid, false); - } - wr32(E1000_VLVF(i), reg); - - /* do not modify RLPML for PF devices */ - if (vf >= adapter->vfs_allocated_count) - return 0; - - adapter->vf_data[vf].vlans_enabled--; - if (!adapter->vf_data[vf].vlans_enabled) { - u32 size; - reg = rd32(E1000_VMOLR(vf)); - size = reg & E1000_VMOLR_RLPML_MASK; - size -= 4; - reg &= ~E1000_VMOLR_RLPML_MASK; - reg |= size; - wr32(E1000_VMOLR(vf), reg); - } - } - } - return 0; -} - -static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf) -{ - struct e1000_hw *hw = &adapter->hw; - - if (vid) - wr32(E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT)); - else - wr32(E1000_VMVIR(vf), 0); -} - -static int igb_ndo_set_vf_vlan(struct net_device *netdev, - int vf, u16 vlan, u8 qos) -{ - int err = 0; - struct igb_adapter *adapter = netdev_priv(netdev); - - if ((vf >= adapter->vfs_allocated_count) || (vlan > 4095) || (qos > 7)) - return -EINVAL; - 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; - 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 { - igb_vlvf_set(adapter, adapter->vf_data[vf].pf_vlan, - false, vf); - igb_set_vmvir(adapter, vlan, vf); - igb_set_vmolr(adapter, vf, true); - adapter->vf_data[vf].pf_vlan = 0; - adapter->vf_data[vf].pf_qos = 0; - } -out: - return err; -} - -static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) -{ - int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; - int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); - - return igb_vlvf_set(adapter, vid, add, vf); -} - -static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf) -{ - /* clear flags - except flag that indicates 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); - if (adapter->vf_data[vf].pf_vlan) - igb_ndo_set_vf_vlan(adapter->netdev, vf, - adapter->vf_data[vf].pf_vlan, - adapter->vf_data[vf].pf_qos); - else - igb_clear_vf_vfta(adapter, vf); - - /* 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); -} - -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; - int rar_entry = hw->mac.rar_entry_count - (vf + 1); - 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_rar_set_qsel(adapter, vf_mac, rar_entry, vf); - - /* enable transmit and receive for vf */ - reg = rd32(E1000_VFTE); - wr32(E1000_VFTE, reg | (1 << vf)); - reg = rd32(E1000_VFRE); - wr32(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); - igb_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 = (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))) { - igb_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 = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf); - - if (retval) { - /* if receive failed revoke VF CTS stats and restart init */ - dev_err(&pdev->dev, "Error receiving message from VF\n"); - vf_data->flags &= ~IGB_VF_FLAG_CTS; - if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) - return; - goto out; - } - - /* 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)) { - if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) - return; - retval = -1; - goto out; - } - - switch ((msgbuf[0] & 0xFFFF)) { - case E1000_VF_SET_MAC_ADDR: - retval = -EINVAL; - if (!(vf_data->flags & IGB_VF_FLAG_PF_SET_MAC)) - retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); - else - dev_warn(&pdev->dev, - "VF %d attempted to override administratively " - "set MAC address\nReload the VF driver to " - "resume operations\n", vf); - 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; - if (vf_data->pf_vlan) - dev_warn(&pdev->dev, - "VF %d attempted to override administratively " - "set VLAN tag\nReload the VF driver to " - "resume operations\n", vf); - else - retval = igb_set_vf_vlan(adapter, msgbuf, vf); - break; - default: - dev_err(&pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); - retval = -1; - break; - } - - msgbuf[0] |= E1000_VT_MSGTYPE_CTS; -out: - /* 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; - - igb_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 (!igb_check_for_rst(hw, vf)) - igb_vf_reset_event(adapter, vf); - - /* process any messages pending */ - if (!igb_check_for_msg(hw, vf)) - igb_rcv_msg_from_vf(adapter, vf); - - /* process any acks */ - if (!igb_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->vfs_allocated_count) - return; - - for (i = 0; i < hw->mac.uta_reg_count; i++) - array_wr32(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 = rd32(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); - } - - 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 = rd32(E1000_ICR); - if (!icr) - return IRQ_NONE; /* Not our interrupt */ - - igb_write_itr(q_vector); - - /* 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; - - 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); - } - - napi_schedule(&q_vector->napi); - - return IRQ_HANDLED; -} - -static inline 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->msix_entries) - igb_set_itr(adapter); - else - igb_update_ring_itr(q_vector); - } - - if (!test_bit(__IGB_DOWN, &adapter->state)) { - if (adapter->msix_entries) - wr32(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); - int tx_clean_complete = 1, work_done = 0; - -#ifdef CONFIG_IGB_DCA - if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED) - igb_update_dca(q_vector); -#endif - if (q_vector->tx_ring) - tx_clean_complete = igb_clean_tx_irq(q_vector); - - if (q_vector->rx_ring) - igb_clean_rx_irq_adv(q_vector, &work_done, budget); - - if (!tx_clean_complete) - work_done = budget; - - /* If not enough Rx work done, exit the polling mode */ - if (work_done < budget) { - napi_complete(napi); - igb_ring_irq_enable(q_vector); - } - - return work_done; -} - -/** - * igb_systim_to_hwtstamp - convert system time value to hw timestamp - * @adapter: board private structure - * @shhwtstamps: timestamp structure to update - * @regval: unsigned 64bit system time value. - * - * We need to convert the system time value stored in the RX/TXSTMP registers - * into a hwtstamp which can be used by the upper level timestamping functions - */ -static void igb_systim_to_hwtstamp(struct igb_adapter *adapter, - struct skb_shared_hwtstamps *shhwtstamps, - u64 regval) -{ - u64 ns; - - /* - * The 82580 starts with 1ns at bit 0 in RX/TXSTMPL, shift this up to - * 24 to match clock shift we setup earlier. - */ - if (adapter->hw.mac.type == e1000_82580) - regval <<= IGB_82580_TSYNC_SHIFT; - - ns = timecounter_cyc2time(&adapter->clock, regval); - timecompare_update(&adapter->compare, ns); - memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps)); - shhwtstamps->hwtstamp = ns_to_ktime(ns); - shhwtstamps->syststamp = timecompare_transform(&adapter->compare, ns); -} - -/** - * igb_tx_hwtstamp - utility function which checks for TX time stamp - * @q_vector: pointer to q_vector containing needed info - * @buffer: pointer to igb_buffer structure - * - * If we were asked to do hardware stamping and such a time stamp is - * available, then it must have been for this skb here because we only - * allow only one such packet into the queue. - */ -static void igb_tx_hwtstamp(struct igb_q_vector *q_vector, struct igb_buffer *buffer_info) -{ - struct igb_adapter *adapter = q_vector->adapter; - struct e1000_hw *hw = &adapter->hw; - struct skb_shared_hwtstamps shhwtstamps; - u64 regval; - - /* if skb does not support hw timestamp or TX stamp not valid exit */ - if (likely(!(buffer_info->tx_flags & SKBTX_HW_TSTAMP)) || - !(rd32(E1000_TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID)) - return; - - regval = rd32(E1000_TXSTMPL); - regval |= (u64)rd32(E1000_TXSTMPH) << 32; - - igb_systim_to_hwtstamp(adapter, &shhwtstamps, regval); - skb_tstamp_tx(buffer_info->skb, &shhwtstamps); -} - -/** - * 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 net_device *netdev = tx_ring->netdev; - struct e1000_hw *hw = &adapter->hw; - struct igb_buffer *buffer_info; - union e1000_adv_tx_desc *tx_desc, *eop_desc; - unsigned int total_bytes = 0, total_packets = 0; - unsigned int i, eop, count = 0; - bool cleaned = false; - - i = tx_ring->next_to_clean; - eop = tx_ring->buffer_info[i].next_to_watch; - eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); - - while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && - (count < tx_ring->count)) { - rmb(); /* read buffer_info after eop_desc status */ - for (cleaned = false; !cleaned; count++) { - tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); - buffer_info = &tx_ring->buffer_info[i]; - cleaned = (i == eop); - - if (buffer_info->skb) { - total_bytes += buffer_info->bytecount; - /* gso_segs is currently only valid for tcp */ - total_packets += buffer_info->gso_segs; - igb_tx_hwtstamp(q_vector, buffer_info); - } - - igb_unmap_and_free_tx_resource(tx_ring, buffer_info); - tx_desc->wb.status = 0; - - i++; - if (i == tx_ring->count) - i = 0; - } - eop = tx_ring->buffer_info[i].next_to_watch; - eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); - } - - tx_ring->next_to_clean = i; - - if (unlikely(count && - netif_carrier_ok(netdev) && - igb_desc_unused(tx_ring) >= IGB_TX_QUEUE_WAKE)) { - /* Make sure that anybody stopping the queue after this - * sees the new next_to_clean. - */ - smp_mb(); - if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && - !(test_bit(__IGB_DOWN, &adapter->state))) { - netif_wake_subqueue(netdev, tx_ring->queue_index); - - u64_stats_update_begin(&tx_ring->tx_syncp); - tx_ring->tx_stats.restart_queue++; - u64_stats_update_end(&tx_ring->tx_syncp); - } - } - - if (tx_ring->detect_tx_hung) { - /* Detect a transmit hang in hardware, this serializes the - * check with the clearing of time_stamp and movement of i */ - tx_ring->detect_tx_hung = false; - if (tx_ring->buffer_info[i].time_stamp && - time_after(jiffies, tx_ring->buffer_info[i].time_stamp + - (adapter->tx_timeout_factor * HZ)) && - !(rd32(E1000_STATUS) & E1000_STATUS_TXOFF)) { - - /* detected Tx unit hang */ - 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 <%x>\n" - " jiffies <%lx>\n" - " desc.status <%x>\n", - tx_ring->queue_index, - readl(tx_ring->head), - readl(tx_ring->tail), - tx_ring->next_to_use, - tx_ring->next_to_clean, - tx_ring->buffer_info[eop].time_stamp, - eop, - jiffies, - eop_desc->wb.status); - netif_stop_subqueue(netdev, tx_ring->queue_index); - } - } - tx_ring->total_bytes += total_bytes; - tx_ring->total_packets += total_packets; - u64_stats_update_begin(&tx_ring->tx_syncp); - tx_ring->tx_stats.bytes += total_bytes; - tx_ring->tx_stats.packets += total_packets; - u64_stats_update_end(&tx_ring->tx_syncp); - return count < tx_ring->count; -} - -static inline void igb_rx_checksum_adv(struct igb_ring *ring, - u32 status_err, struct sk_buff *skb) -{ - skb_checksum_none_assert(skb); - - /* Ignore Checksum bit is set or checksum is disabled through ethtool */ - if (!(ring->flags & IGB_RING_FLAG_RX_CSUM) || - (status_err & E1000_RXD_STAT_IXSM)) - return; - - /* TCP/UDP checksum error bit is set */ - if (status_err & - (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) && - (ring->flags & IGB_RING_FLAG_RX_SCTP_CSUM)) { - u64_stats_update_begin(&ring->rx_syncp); - ring->rx_stats.csum_err++; - u64_stats_update_end(&ring->rx_syncp); - } - /* let the stack verify checksum errors */ - return; - } - /* It must be a TCP or UDP packet with a valid checksum */ - if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) - skb->ip_summed = CHECKSUM_UNNECESSARY; - - dev_dbg(ring->dev, "cksum success: bits %08X\n", status_err); -} - -static void igb_rx_hwtstamp(struct igb_q_vector *q_vector, u32 staterr, - struct sk_buff *skb) -{ - struct igb_adapter *adapter = q_vector->adapter; - struct e1000_hw *hw = &adapter->hw; - u64 regval; - - /* - * If this bit is set, then the RX registers contain the time stamp. No - * other packet will be time stamped until we read these registers, so - * read the registers to make them available again. Because only one - * packet can be time stamped at a time, we know that the register - * values must belong to this one here and therefore we don't need to - * compare any of the additional attributes stored for it. - * - * If nothing went wrong, then it should have a shared tx_flags that we - * can turn into a skb_shared_hwtstamps. - */ - if (staterr & E1000_RXDADV_STAT_TSIP) { - u32 *stamp = (u32 *)skb->data; - regval = le32_to_cpu(*(stamp + 2)); - regval |= (u64)le32_to_cpu(*(stamp + 3)) << 32; - skb_pull(skb, IGB_TS_HDR_LEN); - } else { - if(!(rd32(E1000_TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) - return; - - regval = rd32(E1000_RXSTMPL); - regval |= (u64)rd32(E1000_RXSTMPH) << 32; - } - - igb_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), regval); -} -static inline u16 igb_get_hlen(struct igb_ring *rx_ring, - union e1000_adv_rx_desc *rx_desc) -{ - /* HW will not DMA in data larger than the given buffer, even if it - * parses the (NFS, of course) header to be larger. In that case, it - * fills the header buffer and spills the rest into the page. - */ - u16 hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & - E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; - if (hlen > rx_ring->rx_buffer_len) - hlen = rx_ring->rx_buffer_len; - return hlen; -} - -static bool igb_clean_rx_irq_adv(struct igb_q_vector *q_vector, - int *work_done, int budget) -{ - struct igb_ring *rx_ring = q_vector->rx_ring; - struct net_device *netdev = rx_ring->netdev; - struct device *dev = rx_ring->dev; - union e1000_adv_rx_desc *rx_desc , *next_rxd; - struct igb_buffer *buffer_info , *next_buffer; - struct sk_buff *skb; - bool cleaned = false; - int cleaned_count = 0; - int current_node = numa_node_id(); - unsigned int total_bytes = 0, total_packets = 0; - unsigned int i; - u32 staterr; - u16 length; - - i = rx_ring->next_to_clean; - buffer_info = &rx_ring->buffer_info[i]; - rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); - staterr = le32_to_cpu(rx_desc->wb.upper.status_error); - - while (staterr & E1000_RXD_STAT_DD) { - if (*work_done >= budget) - break; - (*work_done)++; - rmb(); /* read descriptor and rx_buffer_info after status DD */ - - skb = buffer_info->skb; - prefetch(skb->data - NET_IP_ALIGN); - buffer_info->skb = NULL; - - i++; - if (i == rx_ring->count) - i = 0; - - next_rxd = E1000_RX_DESC_ADV(*rx_ring, i); - prefetch(next_rxd); - next_buffer = &rx_ring->buffer_info[i]; - - length = le16_to_cpu(rx_desc->wb.upper.length); - cleaned = true; - cleaned_count++; - - if (buffer_info->dma) { - dma_unmap_single(dev, buffer_info->dma, - rx_ring->rx_buffer_len, - DMA_FROM_DEVICE); - buffer_info->dma = 0; - if (rx_ring->rx_buffer_len >= IGB_RXBUFFER_1024) { - skb_put(skb, length); - goto send_up; - } - skb_put(skb, igb_get_hlen(rx_ring, rx_desc)); - } - - if (length) { - dma_unmap_page(dev, buffer_info->page_dma, - PAGE_SIZE / 2, DMA_FROM_DEVICE); - buffer_info->page_dma = 0; - - skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, - buffer_info->page, - buffer_info->page_offset, - length); - - if ((page_count(buffer_info->page) != 1) || - (page_to_nid(buffer_info->page) != current_node)) - buffer_info->page = NULL; - else - get_page(buffer_info->page); - - skb->len += length; - skb->data_len += length; - skb->truesize += length; - } - - if (!(staterr & E1000_RXD_STAT_EOP)) { - buffer_info->skb = next_buffer->skb; - buffer_info->dma = next_buffer->dma; - next_buffer->skb = skb; - next_buffer->dma = 0; - goto next_desc; - } -send_up: - if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { - dev_kfree_skb_irq(skb); - goto next_desc; - } - - if (staterr & (E1000_RXDADV_STAT_TSIP | E1000_RXDADV_STAT_TS)) - igb_rx_hwtstamp(q_vector, staterr, skb); - total_bytes += skb->len; - total_packets++; - - igb_rx_checksum_adv(rx_ring, staterr, skb); - - skb->protocol = eth_type_trans(skb, netdev); - skb_record_rx_queue(skb, rx_ring->queue_index); - - if (staterr & E1000_RXD_STAT_VP) { - u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan); - - __vlan_hwaccel_put_tag(skb, vid); - } - napi_gro_receive(&q_vector->napi, skb); - -next_desc: - rx_desc->wb.upper.status_error = 0; - - /* return some buffers to hardware, one at a time is too slow */ - if (cleaned_count >= IGB_RX_BUFFER_WRITE) { - igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); - cleaned_count = 0; - } - - /* use prefetched values */ - rx_desc = next_rxd; - buffer_info = next_buffer; - staterr = le32_to_cpu(rx_desc->wb.upper.status_error); - } - - rx_ring->next_to_clean = i; - cleaned_count = igb_desc_unused(rx_ring); - - if (cleaned_count) - igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); - - rx_ring->total_packets += total_packets; - rx_ring->total_bytes += total_bytes; - u64_stats_update_begin(&rx_ring->rx_syncp); - rx_ring->rx_stats.packets += total_packets; - rx_ring->rx_stats.bytes += total_bytes; - u64_stats_update_end(&rx_ring->rx_syncp); - return cleaned; -} - -/** - * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split - * @adapter: address of board private structure - **/ -void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, int cleaned_count) -{ - struct net_device *netdev = rx_ring->netdev; - union e1000_adv_rx_desc *rx_desc; - struct igb_buffer *buffer_info; - struct sk_buff *skb; - unsigned int i; - int bufsz; - - i = rx_ring->next_to_use; - buffer_info = &rx_ring->buffer_info[i]; - - bufsz = rx_ring->rx_buffer_len; - - while (cleaned_count--) { - rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); - - if ((bufsz < IGB_RXBUFFER_1024) && !buffer_info->page_dma) { - if (!buffer_info->page) { - buffer_info->page = netdev_alloc_page(netdev); - if (unlikely(!buffer_info->page)) { - u64_stats_update_begin(&rx_ring->rx_syncp); - rx_ring->rx_stats.alloc_failed++; - u64_stats_update_end(&rx_ring->rx_syncp); - goto no_buffers; - } - buffer_info->page_offset = 0; - } else { - buffer_info->page_offset ^= PAGE_SIZE / 2; - } - buffer_info->page_dma = - dma_map_page(rx_ring->dev, buffer_info->page, - buffer_info->page_offset, - PAGE_SIZE / 2, - DMA_FROM_DEVICE); - if (dma_mapping_error(rx_ring->dev, - buffer_info->page_dma)) { - buffer_info->page_dma = 0; - u64_stats_update_begin(&rx_ring->rx_syncp); - rx_ring->rx_stats.alloc_failed++; - u64_stats_update_end(&rx_ring->rx_syncp); - goto no_buffers; - } - } - - skb = buffer_info->skb; - if (!skb) { - skb = netdev_alloc_skb_ip_align(netdev, bufsz); - if (unlikely(!skb)) { - u64_stats_update_begin(&rx_ring->rx_syncp); - rx_ring->rx_stats.alloc_failed++; - u64_stats_update_end(&rx_ring->rx_syncp); - goto no_buffers; - } - - buffer_info->skb = skb; - } - if (!buffer_info->dma) { - buffer_info->dma = dma_map_single(rx_ring->dev, - skb->data, - bufsz, - DMA_FROM_DEVICE); - if (dma_mapping_error(rx_ring->dev, - buffer_info->dma)) { - buffer_info->dma = 0; - u64_stats_update_begin(&rx_ring->rx_syncp); - rx_ring->rx_stats.alloc_failed++; - u64_stats_update_end(&rx_ring->rx_syncp); - goto no_buffers; - } - } - /* Refresh the desc even if buffer_addrs didn't change because - * each write-back erases this info. */ - if (bufsz < IGB_RXBUFFER_1024) { - rx_desc->read.pkt_addr = - cpu_to_le64(buffer_info->page_dma); - rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); - } else { - rx_desc->read.pkt_addr = cpu_to_le64(buffer_info->dma); - rx_desc->read.hdr_addr = 0; - } - - i++; - if (i == rx_ring->count) - i = 0; - buffer_info = &rx_ring->buffer_info[i]; - } - -no_buffers: - if (rx_ring->next_to_use != i) { - rx_ring->next_to_use = i; - if (i == 0) - i = (rx_ring->count - 1); - else - i--; - - /* 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); - } -} - -/** - * 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 (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, - &data->val_out)) - return -EIO; - break; - case SIOCSMIIREG: - default: - return -EOPNOTSUPP; - } - return 0; -} - -/** - * igb_hwtstamp_ioctl - control hardware time stamping - * @netdev: - * @ifreq: - * @cmd: - * - * Outgoing time stamping can be enabled and disabled. Play nice and - * disable it when requested, although it shouldn't case any overhead - * when no packet needs it. At most one packet in the queue may be - * marked for time stamping, otherwise it would be impossible to tell - * for sure to which packet the hardware time stamp belongs. - * - * Incoming time stamping has to be configured via the hardware - * filters. Not all combinations are supported, in particular event - * type has to be specified. Matching the kind of event packet is - * not supported, with the exception of "all V2 events regardless of - * level 2 or 4". - * - **/ -static int igb_hwtstamp_ioctl(struct net_device *netdev, - struct ifreq *ifr, int cmd) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - struct hwtstamp_config config; - u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED; - u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; - u32 tsync_rx_cfg = 0; - bool is_l4 = false; - bool is_l2 = false; - u32 regval; - - if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) - return -EFAULT; - - /* reserved for future extensions */ - if (config.flags) - return -EINVAL; - - switch (config.tx_type) { - case HWTSTAMP_TX_OFF: - tsync_tx_ctl = 0; - case HWTSTAMP_TX_ON: - break; - default: - return -ERANGE; - } - - switch (config.rx_filter) { - case HWTSTAMP_FILTER_NONE: - tsync_rx_ctl = 0; - break; - case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: - case HWTSTAMP_FILTER_ALL: - /* - * register TSYNCRXCFG must be set, therefore it is not - * possible to time stamp both Sync and Delay_Req messages - * => fall back to time stamping all packets - */ - tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; - config.rx_filter = HWTSTAMP_FILTER_ALL; - break; - case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: - tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; - tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_SYNC_MESSAGE; - is_l4 = true; - break; - case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: - tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; - tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_DELAY_REQ_MESSAGE; - is_l4 = true; - break; - case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: - tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; - tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_SYNC_MESSAGE; - is_l2 = true; - is_l4 = true; - config.rx_filter = HWTSTAMP_FILTER_SOME; - break; - case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: - tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; - tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_DELAY_REQ_MESSAGE; - is_l2 = true; - is_l4 = true; - config.rx_filter = HWTSTAMP_FILTER_SOME; - break; - case HWTSTAMP_FILTER_PTP_V2_EVENT: - case HWTSTAMP_FILTER_PTP_V2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: - tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2; - config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; - is_l2 = true; - break; - default: - return -ERANGE; - } - - if (hw->mac.type == e1000_82575) { - if (tsync_rx_ctl | tsync_tx_ctl) - return -EINVAL; - return 0; - } - - /* - * Per-packet timestamping only works if all packets are - * timestamped, so enable timestamping in all packets as - * long as one rx filter was configured. - */ - if ((hw->mac.type == e1000_82580) && tsync_rx_ctl) { - tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; - tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; - } - - /* enable/disable TX */ - regval = rd32(E1000_TSYNCTXCTL); - regval &= ~E1000_TSYNCTXCTL_ENABLED; - regval |= tsync_tx_ctl; - wr32(E1000_TSYNCTXCTL, regval); - - /* enable/disable RX */ - regval = rd32(E1000_TSYNCRXCTL); - regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK); - regval |= tsync_rx_ctl; - wr32(E1000_TSYNCRXCTL, regval); - - /* define which PTP packets are time stamped */ - wr32(E1000_TSYNCRXCFG, tsync_rx_cfg); - - /* define ethertype filter for timestamped packets */ - if (is_l2) - wr32(E1000_ETQF(3), - (E1000_ETQF_FILTER_ENABLE | /* enable filter */ - E1000_ETQF_1588 | /* enable timestamping */ - ETH_P_1588)); /* 1588 eth protocol type */ - else - wr32(E1000_ETQF(3), 0); - -#define PTP_PORT 319 - /* L4 Queue Filter[3]: filter by destination port and protocol */ - if (is_l4) { - u32 ftqf = (IPPROTO_UDP /* UDP */ - | E1000_FTQF_VF_BP /* VF not compared */ - | E1000_FTQF_1588_TIME_STAMP /* Enable Timestamping */ - | E1000_FTQF_MASK); /* mask all inputs */ - ftqf &= ~E1000_FTQF_MASK_PROTO_BP; /* enable protocol check */ - - wr32(E1000_IMIR(3), htons(PTP_PORT)); - wr32(E1000_IMIREXT(3), - (E1000_IMIREXT_SIZE_BP | E1000_IMIREXT_CTRL_BP)); - if (hw->mac.type == e1000_82576) { - /* enable source port check */ - wr32(E1000_SPQF(3), htons(PTP_PORT)); - ftqf &= ~E1000_FTQF_MASK_SOURCE_PORT_BP; - } - wr32(E1000_FTQF(3), ftqf); - } else { - wr32(E1000_FTQF(3), E1000_FTQF_MASK); - } - wrfl(); - - adapter->hwtstamp_config = config; - - /* clear TX/RX time stamp registers, just to be sure */ - regval = rd32(E1000_TXSTMPH); - regval = rd32(E1000_RXSTMPH); - - return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? - -EFAULT : 0; -} - -/** - * igb_ioctl - - * @netdev: - * @ifreq: - * @cmd: - **/ -static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) -{ - switch (cmd) { - case SIOCGMIIPHY: - case SIOCGMIIREG: - case SIOCSMIIREG: - return igb_mii_ioctl(netdev, ifr, cmd); - case SIOCSHWTSTAMP: - return igb_hwtstamp_ioctl(netdev, ifr, cmd); - default: - return -EOPNOTSUPP; - } -} - -s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) -{ - struct igb_adapter *adapter = hw->back; - u16 cap_offset; - - cap_offset = adapter->pdev->pcie_cap; - if (!cap_offset) - return -E1000_ERR_CONFIG; - - pci_read_config_word(adapter->pdev, cap_offset + reg, value); - - return 0; -} - -s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) -{ - struct igb_adapter *adapter = hw->back; - u16 cap_offset; - - cap_offset = adapter->pdev->pcie_cap; - if (!cap_offset) - return -E1000_ERR_CONFIG; - - pci_write_config_word(adapter->pdev, cap_offset + reg, *value); - - return 0; -} - -static void igb_vlan_mode(struct net_device *netdev, u32 features) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - u32 ctrl, rctl; - - igb_irq_disable(adapter); - - if (features & NETIF_F_HW_VLAN_RX) { - /* enable VLAN tag insert/strip */ - ctrl = rd32(E1000_CTRL); - ctrl |= E1000_CTRL_VME; - wr32(E1000_CTRL, ctrl); - - /* Disable CFI check */ - rctl = rd32(E1000_RCTL); - rctl &= ~E1000_RCTL_CFIEN; - wr32(E1000_RCTL, rctl); - } else { - /* disable VLAN tag insert/strip */ - ctrl = rd32(E1000_CTRL); - ctrl &= ~E1000_CTRL_VME; - wr32(E1000_CTRL, ctrl); - } - - igb_rlpml_set(adapter); - - if (!test_bit(__IGB_DOWN, &adapter->state)) - igb_irq_enable(adapter); -} - -static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - 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(hw, vid, true); - - set_bit(vid, adapter->active_vlans); -} - -static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) -{ - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - int pf_id = adapter->vfs_allocated_count; - s32 err; - - igb_irq_disable(adapter); - - if (!test_bit(__IGB_DOWN, &adapter->state)) - igb_irq_enable(adapter); - - /* 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(hw, vid, false); - - clear_bit(vid, adapter->active_vlans); -} - -static void igb_restore_vlan(struct igb_adapter *adapter) -{ - u16 vid; - - for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) - igb_vlan_rx_add_vid(adapter->netdev, vid); -} - -int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx) -{ - struct pci_dev *pdev = adapter->pdev; - struct e1000_mac_info *mac = &adapter->hw.mac; - - mac->autoneg = 0; - - /* Make sure dplx is at most 1 bit and lsb of speed is not set - * for the switch() below to work */ - if ((spd & 1) || (dplx & ~1)) - goto err_inval; - - /* Fiber NIC's only allow 1000 Gbps Full duplex */ - if ((adapter->hw.phy.media_type == e1000_media_type_internal_serdes) && - spd != SPEED_1000 && - dplx != DUPLEX_FULL) - goto err_inval; - - switch (spd + dplx) { - 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: - goto err_inval; - } - return 0; - -err_inval: - dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n"); - return -EINVAL; -} - -static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct igb_adapter *adapter = netdev_priv(netdev); - struct e1000_hw *hw = &adapter->hw; - u32 ctrl, rctl, status; - u32 wufc = adapter->wol; -#ifdef CONFIG_PM - int retval = 0; -#endif - - netif_device_detach(netdev); - - if (netif_running(netdev)) - igb_close(netdev); - - igb_clear_interrupt_scheme(adapter); - -#ifdef CONFIG_PM - retval = pci_save_state(pdev); - if (retval) - return retval; -#endif - - status = rd32(E1000_STATUS); - if (status & E1000_STATUS_LU) - wufc &= ~E1000_WUFC_LNKC; - - 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 = rd32(E1000_RCTL); - rctl |= E1000_RCTL_MPE; - wr32(E1000_RCTL, rctl); - } - - ctrl = rd32(E1000_CTRL); - /* advertise wake from D3Cold */ - #define E1000_CTRL_ADVD3WUC 0x00100000 - /* phy power management enable */ - #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 - ctrl |= E1000_CTRL_ADVD3WUC; - wr32(E1000_CTRL, ctrl); - - /* Allow time for pending master requests to run */ - igb_disable_pcie_master(hw); - - wr32(E1000_WUC, E1000_WUC_PME_EN); - wr32(E1000_WUFC, wufc); - } else { - wr32(E1000_WUC, 0); - wr32(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 -static int igb_suspend(struct pci_dev *pdev, pm_message_t state) -{ - int retval; - bool wake; - - retval = __igb_shutdown(pdev, &wake); - 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_resume(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; - 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(&pdev->dev, - "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)) { - dev_err(&pdev->dev, "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); - - wr32(E1000_WUS, ~0); - - if (netif_running(netdev)) { - err = igb_open(netdev); - if (err) - return err; - } - - netif_device_attach(netdev); - - return 0; -} -#endif - -static void igb_shutdown(struct pci_dev *pdev) -{ - bool wake; - - __igb_shutdown(pdev, &wake); - - if (system_state == SYSTEM_POWER_OFF) { - pci_wake_from_d3(pdev, wake); - pci_set_power_state(pdev, PCI_D3hot); - } -} - -#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; - int i; - - if (!adapter->msix_entries) { - struct igb_q_vector *q_vector = adapter->q_vector[0]; - igb_irq_disable(adapter); - napi_schedule(&q_vector->napi); - return; - } - - for (i = 0; i < adapter->num_q_vectors; i++) { - struct igb_q_vector *q_vector = adapter->q_vector[i]; - wr32(E1000_EIMC, q_vector->eims_value); - napi_schedule(&q_vector->napi); - } -} -#endif /* CONFIG_NET_POLL_CONTROLLER */ - -/** - * 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); - - 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; - int err; - - if (pci_enable_device_mem(pdev)) { - dev_err(&pdev->dev, - "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); - - igb_reset(adapter); - wr32(E1000_WUS, ~0); - result = PCI_ERS_RESULT_RECOVERED; - } - - err = pci_cleanup_aer_uncorrect_error_status(pdev); - if (err) { - dev_err(&pdev->dev, "pci_cleanup_aer_uncorrect_error_status " - "failed 0x%0x\n", err); - /* non-fatal, continue */ - } - - 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 (netif_running(netdev)) { - if (igb_up(adapter)) { - dev_err(&pdev->dev, "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); -} - -static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index, - u8 qsel) -{ - u32 rar_low, rar_high; - struct e1000_hw *hw = &adapter->hw; - - /* 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. */ - rar_high |= E1000_RAH_AV; - - if (hw->mac.type == e1000_82575) - rar_high |= E1000_RAH_POOL_1 * qsel; - else - rar_high |= E1000_RAH_POOL_1 << qsel; - - wr32(E1000_RAL(index), rar_low); - wrfl(); - wr32(E1000_RAH(index), rar_high); - wrfl(); -} - -static int igb_set_vf_mac(struct igb_adapter *adapter, - int vf, unsigned char *mac_addr) -{ - struct e1000_hw *hw = &adapter->hw; - /* VF MAC addresses start at end of receive addresses and moves - * torwards the first, as a result a collision should not be possible */ - int rar_entry = hw->mac.rar_entry_count - (vf + 1); - - memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); - - igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf); - - return 0; -} - -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."); - 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; - 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; - } - - wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */ - wr32(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 or not supported */ - 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); - } -} - -static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate) -{ - 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; - - actual_link_speed = igb_link_mbps(adapter->link_speed); - if ((vf >= adapter->vfs_allocated_count) || - (!(rd32(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); - ivi->tx_rate = adapter->vf_data[vf].tx_rate; - ivi->vlan = adapter->vf_data[vf].pf_vlan; - ivi->qos = adapter->vf_data[vf].pf_qos; - return 0; -} - -static void igb_vmm_control(struct igb_adapter *adapter) -{ - struct e1000_hw *hw = &adapter->hw; - 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 = rd32(E1000_DTXCTL); - reg |= E1000_DTXCTL_VLAN_ADDED; - wr32(E1000_DTXCTL, reg); - case e1000_82580: - /* enable replication vlan tag stripping */ - reg = rd32(E1000_RPLOLR); - reg |= E1000_RPLOLR_STRVLAN; - wr32(E1000_RPLOLR, reg); - case e1000_i350: - /* none of the above registers are supported by i350 */ - break; - } - - if (adapter->vfs_allocated_count) { - igb_vmdq_set_loopback_pf(hw, true); - igb_vmdq_set_replication_pf(hw, true); - igb_vmdq_set_anti_spoofing_pf(hw, true, - adapter->vfs_allocated_count); - } else { - igb_vmdq_set_loopback_pf(hw, false); - igb_vmdq_set_replication_pf(hw, false); - } -} - -/* igb_main.c */ |