/* Intel(R) Gigabit Ethernet Linux driver
 * Copyright(c) 2007-2014 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, see <http://www.gnu.org/licenses/>.
 *
 * 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
 */

/* ethtool support for igb */

#include <linux/vmalloc.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/if_ether.h>
#include <linux/ethtool.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include <linux/highmem.h>
#include <linux/mdio.h>

#include "igb.h"

struct igb_stats {
        char stat_string[ETH_GSTRING_LEN];
        int sizeof_stat;
        int stat_offset;
};

#define IGB_STAT(_name, _stat) { \
        .stat_string = _name, \
        .sizeof_stat = FIELD_SIZEOF(struct igb_adapter, _stat), \
        .stat_offset = offsetof(struct igb_adapter, _stat) \
}
static const struct igb_stats igb_gstrings_stats[] = {
        IGB_STAT("rx_packets", stats.gprc),
        IGB_STAT("tx_packets", stats.gptc),
        IGB_STAT("rx_bytes", stats.gorc),
        IGB_STAT("tx_bytes", stats.gotc),
        IGB_STAT("rx_broadcast", stats.bprc),
        IGB_STAT("tx_broadcast", stats.bptc),
        IGB_STAT("rx_multicast", stats.mprc),
        IGB_STAT("tx_multicast", stats.mptc),
        IGB_STAT("multicast", stats.mprc),
        IGB_STAT("collisions", stats.colc),
        IGB_STAT("rx_crc_errors", stats.crcerrs),
        IGB_STAT("rx_no_buffer_count", stats.rnbc),
        IGB_STAT("rx_missed_errors", stats.mpc),
        IGB_STAT("tx_aborted_errors", stats.ecol),
        IGB_STAT("tx_carrier_errors", stats.tncrs),
        IGB_STAT("tx_window_errors", stats.latecol),
        IGB_STAT("tx_abort_late_coll", stats.latecol),
        IGB_STAT("tx_deferred_ok", stats.dc),
        IGB_STAT("tx_single_coll_ok", stats.scc),
        IGB_STAT("tx_multi_coll_ok", stats.mcc),
        IGB_STAT("tx_timeout_count", tx_timeout_count),
        IGB_STAT("rx_long_length_errors", stats.roc),
        IGB_STAT("rx_short_length_errors", stats.ruc),
        IGB_STAT("rx_align_errors", stats.algnerrc),
        IGB_STAT("tx_tcp_seg_good", stats.tsctc),
        IGB_STAT("tx_tcp_seg_failed", stats.tsctfc),
        IGB_STAT("rx_flow_control_xon", stats.xonrxc),
        IGB_STAT("rx_flow_control_xoff", stats.xoffrxc),
        IGB_STAT("tx_flow_control_xon", stats.xontxc),
        IGB_STAT("tx_flow_control_xoff", stats.xofftxc),
        IGB_STAT("rx_long_byte_count", stats.gorc),
        IGB_STAT("tx_dma_out_of_sync", stats.doosync),
        IGB_STAT("tx_smbus", stats.mgptc),
        IGB_STAT("rx_smbus", stats.mgprc),
        IGB_STAT("dropped_smbus", stats.mgpdc),
        IGB_STAT("os2bmc_rx_by_bmc", stats.o2bgptc),
        IGB_STAT("os2bmc_tx_by_bmc", stats.b2ospc),
        IGB_STAT("os2bmc_tx_by_host", stats.o2bspc),
        IGB_STAT("os2bmc_rx_by_host", stats.b2ogprc),
        IGB_STAT("tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
        IGB_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped),
        IGB_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
};

#define IGB_NETDEV_STAT(_net_stat) { \
        .stat_string = __stringify(_net_stat), \
        .sizeof_stat = FIELD_SIZEOF(struct rtnl_link_stats64, _net_stat), \
        .stat_offset = offsetof(struct rtnl_link_stats64, _net_stat) \
}
static const struct igb_stats igb_gstrings_net_stats[] = {
        IGB_NETDEV_STAT(rx_errors),
        IGB_NETDEV_STAT(tx_errors),
        IGB_NETDEV_STAT(tx_dropped),
        IGB_NETDEV_STAT(rx_length_errors),
        IGB_NETDEV_STAT(rx_over_errors),
        IGB_NETDEV_STAT(rx_frame_errors),
        IGB_NETDEV_STAT(rx_fifo_errors),
        IGB_NETDEV_STAT(tx_fifo_errors),
        IGB_NETDEV_STAT(tx_heartbeat_errors)
};

#define IGB_GLOBAL_STATS_LEN    \
        (sizeof(igb_gstrings_stats) / sizeof(struct igb_stats))
#define IGB_NETDEV_STATS_LEN    \
        (sizeof(igb_gstrings_net_stats) / sizeof(struct igb_stats))
#define IGB_RX_QUEUE_STATS_LEN \
        (sizeof(struct igb_rx_queue_stats) / sizeof(u64))

#define IGB_TX_QUEUE_STATS_LEN 3 /* packets, bytes, restart_queue */

#define IGB_QUEUE_STATS_LEN \
        ((((struct igb_adapter *)netdev_priv(netdev))->num_rx_queues * \
          IGB_RX_QUEUE_STATS_LEN) + \
         (((struct igb_adapter *)netdev_priv(netdev))->num_tx_queues * \
          IGB_TX_QUEUE_STATS_LEN))
#define IGB_STATS_LEN \
        (IGB_GLOBAL_STATS_LEN + IGB_NETDEV_STATS_LEN + IGB_QUEUE_STATS_LEN)

enum igb_diagnostics_results {
        TEST_REG = 0,
        TEST_EEP,
        TEST_IRQ,
        TEST_LOOP,
        TEST_LINK
};

static const char igb_gstrings_test[][ETH_GSTRING_LEN] = {
        [TEST_REG]  = "Register test  (offline)",
        [TEST_EEP]  = "Eeprom test    (offline)",
        [TEST_IRQ]  = "Interrupt test (offline)",
        [TEST_LOOP] = "Loopback test  (offline)",
        [TEST_LINK] = "Link test   (on/offline)"
};
#define IGB_TEST_LEN (sizeof(igb_gstrings_test) / ETH_GSTRING_LEN)

static const char igb_priv_flags_strings[][ETH_GSTRING_LEN] = {
#define IGB_PRIV_FLAGS_LEGACY_RX        BIT(0)
        "legacy-rx",
};

#define IGB_PRIV_FLAGS_STR_LEN ARRAY_SIZE(igb_priv_flags_strings)

static int igb_get_link_ksettings(struct net_device *netdev,
                                  struct ethtool_link_ksettings *cmd)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_hw *hw = &adapter->hw;
        struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
        struct e1000_sfp_flags *eth_flags = &dev_spec->eth_flags;
        u32 status;
        u32 speed;
        u32 supported, advertising;

        status = rd32(E1000_STATUS);
        if (hw->phy.media_type == e1000_media_type_copper) {

                supported = (SUPPORTED_10baseT_Half |
                             SUPPORTED_10baseT_Full |
                             SUPPORTED_100baseT_Half |
                             SUPPORTED_100baseT_Full |
                             SUPPORTED_1000baseT_Full|
                             SUPPORTED_Autoneg |
                             SUPPORTED_TP |
                             SUPPORTED_Pause);
                advertising = ADVERTISED_TP;

                if (hw->mac.autoneg == 1) {
                        advertising |= ADVERTISED_Autoneg;
                        /* the e1000 autoneg seems to match ethtool nicely */
                        advertising |= hw->phy.autoneg_advertised;
                }

                cmd->base.port = PORT_TP;
                cmd->base.phy_address = hw->phy.addr;
        } else {
                supported = (SUPPORTED_FIBRE |
                             SUPPORTED_1000baseKX_Full |
                             SUPPORTED_Autoneg |
                             SUPPORTED_Pause);
                advertising = (ADVERTISED_FIBRE |
                               ADVERTISED_1000baseKX_Full);
                if (hw->mac.type == e1000_i354) {
                        if ((hw->device_id ==
                             E1000_DEV_ID_I354_BACKPLANE_2_5GBPS) &&
                            !(status & E1000_STATUS_2P5_SKU_OVER)) {
                                supported |= SUPPORTED_2500baseX_Full;
                                supported &= ~SUPPORTED_1000baseKX_Full;
                                advertising |= ADVERTISED_2500baseX_Full;
                                advertising &= ~ADVERTISED_1000baseKX_Full;
                        }
                }
                if (eth_flags->e100_base_fx) {
                        supported |= SUPPORTED_100baseT_Full;
                        advertising |= ADVERTISED_100baseT_Full;
                }
                if (hw->mac.autoneg == 1)
                        advertising |= ADVERTISED_Autoneg;

                cmd->base.port = PORT_FIBRE;
        }
        if (hw->mac.autoneg != 1)
                advertising &= ~(ADVERTISED_Pause |
                                 ADVERTISED_Asym_Pause);

        switch (hw->fc.requested_mode) {
        case e1000_fc_full:
                advertising |= ADVERTISED_Pause;
                break;
        case e1000_fc_rx_pause:
                advertising |= (ADVERTISED_Pause |
                                ADVERTISED_Asym_Pause);
                break;
        case e1000_fc_tx_pause:
                advertising |=  ADVERTISED_Asym_Pause;
                break;
        default:
                advertising &= ~(ADVERTISED_Pause |
                                 ADVERTISED_Asym_Pause);
        }
        if (status & E1000_STATUS_LU) {
                if ((status & E1000_STATUS_2P5_SKU) &&
                    !(status & E1000_STATUS_2P5_SKU_OVER)) {
                        speed = SPEED_2500;
                } else if (status & E1000_STATUS_SPEED_1000) {
                        speed = SPEED_1000;
                } else if (status & E1000_STATUS_SPEED_100) {
                        speed = SPEED_100;
                } else {
                        speed = SPEED_10;
                }
                if ((status & E1000_STATUS_FD) ||
                    hw->phy.media_type != e1000_media_type_copper)
                        cmd->base.duplex = DUPLEX_FULL;
                else
                        cmd->base.duplex = DUPLEX_HALF;
        } else {
                speed = SPEED_UNKNOWN;
                cmd->base.duplex = DUPLEX_UNKNOWN;
        }
        cmd->base.speed = speed;
        if ((hw->phy.media_type == e1000_media_type_fiber) ||
            hw->mac.autoneg)
                cmd->base.autoneg = AUTONEG_ENABLE;
        else
                cmd->base.autoneg = AUTONEG_DISABLE;

        /* MDI-X => 2; MDI =>1; Invalid =>0 */
        if (hw->phy.media_type == e1000_media_type_copper)
                cmd->base.eth_tp_mdix = hw->phy.is_mdix ? ETH_TP_MDI_X :
                                                      ETH_TP_MDI;
        else
                cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;

        if (hw->phy.mdix == AUTO_ALL_MODES)
                cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO;
        else
                cmd->base.eth_tp_mdix_ctrl = hw->phy.mdix;

        ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
                                                supported);
        ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
                                                advertising);

        return 0;
}

static int igb_set_link_ksettings(struct net_device *netdev,
                                  const struct ethtool_link_ksettings *cmd)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_hw *hw = &adapter->hw;
        u32 advertising;

        /* When SoL/IDER sessions are active, autoneg/speed/duplex
         * cannot be changed
         */
        if (igb_check_reset_block(hw)) {
                dev_err(&adapter->pdev->dev,
                        "Cannot change link characteristics when SoL/IDER is active.\n");
                return -EINVAL;
        }

        /* MDI setting is only allowed when autoneg enabled because
         * some hardware doesn't allow MDI setting when speed or
         * duplex is forced.
         */
        if (cmd->base.eth_tp_mdix_ctrl) {
                if (hw->phy.media_type != e1000_media_type_copper)
                        return -EOPNOTSUPP;

                if ((cmd->base.eth_tp_mdix_ctrl != ETH_TP_MDI_AUTO) &&
                    (cmd->base.autoneg != AUTONEG_ENABLE)) {
                        dev_err(&adapter->pdev->dev, "forcing MDI/MDI-X state is not supported when link speed and/or duplex are forced\n");
                        return -EINVAL;
                }
        }

        while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
                usleep_range(1000, 2000);

        ethtool_convert_link_mode_to_legacy_u32(&advertising,
                                                cmd->link_modes.advertising);

        if (cmd->base.autoneg == AUTONEG_ENABLE) {
                hw->mac.autoneg = 1;
                if (hw->phy.media_type == e1000_media_type_fiber) {
                        hw->phy.autoneg_advertised = advertising |
                                                     ADVERTISED_FIBRE |
                                                     ADVERTISED_Autoneg;
                        switch (adapter->link_speed) {
                        case SPEED_2500:
                                hw->phy.autoneg_advertised =
                                        ADVERTISED_2500baseX_Full;
                                break;
                        case SPEED_1000:
                                hw->phy.autoneg_advertised =
                                        ADVERTISED_1000baseT_Full;
                                break;
                        case SPEED_100:
                                hw->phy.autoneg_advertised =
                                        ADVERTISED_100baseT_Full;
                                break;
                        default:
                                break;
                        }
                } else {
                        hw->phy.autoneg_advertised = advertising |
                                                     ADVERTISED_TP |
                                                     ADVERTISED_Autoneg;
                }
                advertising = hw->phy.autoneg_advertised;
                if (adapter->fc_autoneg)
                        hw->fc.requested_mode = e1000_fc_default;
        } else {
                u32 speed = cmd->base.speed;
                /* calling this overrides forced MDI setting */
                if (igb_set_spd_dplx(adapter, speed, cmd->base.duplex)) {
                        clear_bit(__IGB_RESETTING, &adapter->state);
                        return -EINVAL;
                }
        }

        /* MDI-X => 2; MDI => 1; Auto => 3 */
        if (cmd->base.eth_tp_mdix_ctrl) {
                /* fix up the value for auto (3 => 0) as zero is mapped
                 * internally to auto
                 */
                if (cmd->base.eth_tp_mdix_ctrl == ETH_TP_MDI_AUTO)
                        hw->phy.mdix = AUTO_ALL_MODES;
                else
                        hw->phy.mdix = cmd->base.eth_tp_mdix_ctrl;
        }

        /* reset the link */
        if (netif_running(adapter->netdev)) {
                igb_down(adapter);
                igb_up(adapter);
        } else
                igb_reset(adapter);

        clear_bit(__IGB_RESETTING, &adapter->state);
        return 0;
}

static u32 igb_get_link(struct net_device *netdev)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_mac_info *mac = &adapter->hw.mac;

        /* If the link is not reported up to netdev, interrupts are disabled,
         * and so the physical link state may have changed since we last
         * looked. Set get_link_status to make sure that the true link
         * state is interrogated, rather than pulling a cached and possibly
         * stale link state from the driver.
         */
        if (!netif_carrier_ok(netdev))
                mac->get_link_status = 1;

        return igb_has_link(adapter);
}

static void igb_get_pauseparam(struct net_device *netdev,
                               struct ethtool_pauseparam *pause)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_hw *hw = &adapter->hw;

        pause->autoneg =
                (adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);

        if (hw->fc.current_mode == e1000_fc_rx_pause)
                pause->rx_pause = 1;
        else if (hw->fc.current_mode == e1000_fc_tx_pause)
                pause->tx_pause = 1;
        else if (hw->fc.current_mode == e1000_fc_full) {
                pause->rx_pause = 1;
                pause->tx_pause = 1;
        }
}

static int igb_set_pauseparam(struct net_device *netdev,
                              struct ethtool_pauseparam *pause)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_hw *hw = &adapter->hw;
        int retval = 0;

        /* 100basefx does not support setting link flow control */
        if (hw->dev_spec._82575.eth_flags.e100_base_fx)
                return -EINVAL;

        adapter->fc_autoneg = pause->autoneg;

        while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
                usleep_range(1000, 2000);

        if (adapter->fc_autoneg == AUTONEG_ENABLE) {
                hw->fc.requested_mode = e1000_fc_default;
                if (netif_running(adapter->netdev)) {
                        igb_down(adapter);
                        igb_up(adapter);
                } else {
                        igb_reset(adapter);
                }
        } else {
                if (pause->rx_pause && pause->tx_pause)
                        hw->fc.requested_mode = e1000_fc_full;
                else if (pause->rx_pause && !pause->tx_pause)
                        hw->fc.requested_mode = e1000_fc_rx_pause;
                else if (!pause->rx_pause && pause->tx_pause)
                        hw->fc.requested_mode = e1000_fc_tx_pause;
                else if (!pause->rx_pause && !pause->tx_pause)
                        hw->fc.requested_mode = e1000_fc_none;

                hw->fc.current_mode = hw->fc.requested_mode;

                retval = ((hw->phy.media_type == e1000_media_type_copper) ?
                          igb_force_mac_fc(hw) : igb_setup_link(hw));
        }

        clear_bit(__IGB_RESETTING, &adapter->state);
        return retval;
}

static u32 igb_get_msglevel(struct net_device *netdev)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        return adapter->msg_enable;
}

static void igb_set_msglevel(struct net_device *netdev, u32 data)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        adapter->msg_enable = data;
}

static int igb_get_regs_len(struct net_device *netdev)
{
#define IGB_REGS_LEN 739
        return IGB_REGS_LEN * sizeof(u32);
}

static void igb_get_regs(struct net_device *netdev,
                         struct ethtool_regs *regs, void *p)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_hw *hw = &adapter->hw;
        u32 *regs_buff = p;
        u8 i;

        memset(p, 0, IGB_REGS_LEN * sizeof(u32));

        regs->version = (1u << 24) | (hw->revision_id << 16) | hw->device_id;

        /* General Registers */
        regs_buff[0] = rd32(E1000_CTRL);
        regs_buff[1] = rd32(E1000_STATUS);
        regs_buff[2] = rd32(E1000_CTRL_EXT);
        regs_buff[3] = rd32(E1000_MDIC);
        regs_buff[4] = rd32(E1000_SCTL);
        regs_buff[5] = rd32(E1000_CONNSW);
        regs_buff[6] = rd32(E1000_VET);
        regs_buff[7] = rd32(E1000_LEDCTL);
        regs_buff[8] = rd32(E1000_PBA);
        regs_buff[9] = rd32(E1000_PBS);
        regs_buff[10] = rd32(E1000_FRTIMER);
        regs_buff[11] = rd32(E1000_TCPTIMER);

        /* NVM Register */
        regs_buff[12] = rd32(E1000_EECD);

        /* Interrupt */
        /* Reading EICS for EICR because they read the
         * same but EICS does not clear on read
         */
        regs_buff[13] = rd32(E1000_EICS);
        regs_buff[14] = rd32(E1000_EICS);
        regs_buff[15] = rd32(E1000_EIMS);
        regs_buff[16] = rd32(E1000_EIMC);
        regs_buff[17] = rd32(E1000_EIAC);
        regs_buff[18] = rd32(E1000_EIAM);
        /* Reading ICS for ICR because they read the
         * same but ICS does not clear on read
         */
        regs_buff[19] = rd32(E1000_ICS);
        regs_buff[20] = rd32(E1000_ICS);
        regs_buff[21] = rd32(E1000_IMS);
        regs_buff[22] = rd32(E1000_IMC);
        regs_buff[23] = rd32(E1000_IAC);
        regs_buff[24] = rd32(E1000_IAM);
        regs_buff[25] = rd32(E1000_IMIRVP);

        /* Flow Control */
        regs_buff[26] = rd32(E1000_FCAL);
        regs_buff[27] = rd32(E1000_FCAH);
        regs_buff[28] = rd32(E1000_FCTTV);
        regs_buff[29] = rd32(E1000_FCRTL);
        regs_buff[30] = rd32(E1000_FCRTH);
        regs_buff[31] = rd32(E1000_FCRTV);

        /* Receive */
        regs_buff[32] = rd32(E1000_RCTL);
        regs_buff[33] = rd32(E1000_RXCSUM);
        regs_buff[34] = rd32(E1000_RLPML);
        regs_buff[35] = rd32(E1000_RFCTL);
        regs_buff[36] = rd32(E1000_MRQC);
        regs_buff[37] = rd32(E1000_VT_CTL);

        /* Transmit */
        regs_buff[38] = rd32(E1000_TCTL);
        regs_buff[39] = rd32(E1000_TCTL_EXT);
        regs_buff[40] = rd32(E1000_TIPG);
        regs_buff[41] = rd32(E1000_DTXCTL);

        /* Wake Up */
        regs_buff[42] = rd32(E1000_WUC);
        regs_buff[43] = rd32(E1000_WUFC);
        regs_buff[44] = rd32(E1000_WUS);
        regs_buff[45] = rd32(E1000_IPAV);
        regs_buff[46] = rd32(E1000_WUPL);

        /* MAC */
        regs_buff[47] = rd32(E1000_PCS_CFG0);
        regs_buff[48] = rd32(E1000_PCS_LCTL);
        regs_buff[49] = rd32(E1000_PCS_LSTAT);
        regs_buff[50] = rd32(E1000_PCS_ANADV);
        regs_buff[51] = rd32(E1000_PCS_LPAB);
        regs_buff[52] = rd32(E1000_PCS_NPTX);
        regs_buff[53] = rd32(E1000_PCS_LPABNP);

        /* Statistics */
        regs_buff[54] = adapter->stats.crcerrs;
        regs_buff[55] = adapter->stats.algnerrc;
        regs_buff[56] = adapter->stats.symerrs;
        regs_buff[57] = adapter->stats.rxerrc;
        regs_buff[58] = adapter->stats.mpc;
        regs_buff[59] = adapter->stats.scc;
        regs_buff[60] = adapter->stats.ecol;
        regs_buff[61] = adapter->stats.mcc;
        regs_buff[62] = adapter->stats.latecol;
        regs_buff[63] = adapter->stats.colc;
        regs_buff[64] = adapter->stats.dc;
        regs_buff[65] = adapter->stats.tncrs;
        regs_buff[66] = adapter->stats.sec;
        regs_buff[67] = adapter->stats.htdpmc;
        regs_buff[68] = adapter->stats.rlec;
        regs_buff[69] = adapter->stats.xonrxc;
        regs_buff[70] = adapter->stats.xontxc;
        regs_buff[71] = adapter->stats.xoffrxc;
        regs_buff[72] = adapter->stats.xofftxc;
        regs_buff[73] = adapter->stats.fcruc;
        regs_buff[74] = adapter->stats.prc64;
        regs_buff[75] = adapter->stats.prc127;
        regs_buff[76] = adapter->stats.prc255;
        regs_buff[77] = adapter->stats.prc511;
        regs_buff[78] = adapter->stats.prc1023;
        regs_buff[79] = adapter->stats.prc1522;
        regs_buff[80] = adapter->stats.gprc;
        regs_buff[81] = adapter->stats.bprc;
        regs_buff[82] = adapter->stats.mprc;
        regs_buff[83] = adapter->stats.gptc;
        regs_buff[84] = adapter->stats.gorc;
        regs_buff[86] = adapter->stats.gotc;
        regs_buff[88] = adapter->stats.rnbc;
        regs_buff[89] = adapter->stats.ruc;
        regs_buff[90] = adapter->stats.rfc;
        regs_buff[91] = adapter->stats.roc;
        regs_buff[92] = adapter->stats.rjc;
        regs_buff[93] = adapter->stats.mgprc;
        regs_buff[94] = adapter->stats.mgpdc;
        regs_buff[95] = adapter->stats.mgptc;
        regs_buff[96] = adapter->stats.tor;
        regs_buff[98] = adapter->stats.tot;
        regs_buff[100] = adapter->stats.tpr;
        regs_buff[101] = adapter->stats.tpt;
        regs_buff[102] = adapter->stats.ptc64;
        regs_buff[103] = adapter->stats.ptc127;
        regs_buff[104] = adapter->stats.ptc255;
        regs_buff[105] = adapter->stats.ptc511;
        regs_buff[106] = adapter->stats.ptc1023;
        regs_buff[107] = adapter->stats.ptc1522;
        regs_buff[108] = adapter->stats.mptc;
        regs_buff[109] = adapter->stats.bptc;
        regs_buff[110] = adapter->stats.tsctc;
        regs_buff[111] = adapter->stats.iac;
        regs_buff[112] = adapter->stats.rpthc;
        regs_buff[113] = adapter->stats.hgptc;
        regs_buff[114] = adapter->stats.hgorc;
        regs_buff[116] = adapter->stats.hgotc;
        regs_buff[118] = adapter->stats.lenerrs;
        regs_buff[119] = adapter->stats.scvpc;
        regs_buff[120] = adapter->stats.hrmpc;

        for (i = 0; i < 4; i++)
                regs_buff[121 + i] = rd32(E1000_SRRCTL(i));
        for (i = 0; i < 4; i++)
                regs_buff[125 + i] = rd32(E1000_PSRTYPE(i));
        for (i = 0; i < 4; i++)
                regs_buff[129 + i] = rd32(E1000_RDBAL(i));
        for (i = 0; i < 4; i++)
                regs_buff[133 + i] = rd32(E1000_RDBAH(i));
        for (i = 0; i < 4; i++)
                regs_buff[137 + i] = rd32(E1000_RDLEN(i));
        for (i = 0; i < 4; i++)
                regs_buff[141 + i] = rd32(E1000_RDH(i));
        for (i = 0; i < 4; i++)
                regs_buff[145 + i] = rd32(E1000_RDT(i));
        for (i = 0; i < 4; i++)
                regs_buff[149 + i] = rd32(E1000_RXDCTL(i));

        for (i = 0; i < 10; i++)
                regs_buff[153 + i] = rd32(E1000_EITR(i));
        for (i = 0; i < 8; i++)
                regs_buff[163 + i] = rd32(E1000_IMIR(i));
        for (i = 0; i < 8; i++)
                regs_buff[171 + i] = rd32(E1000_IMIREXT(i));
        for (i = 0; i < 16; i++)
                regs_buff[179 + i] = rd32(E1000_RAL(i));
        for (i = 0; i < 16; i++)
                regs_buff[195 + i] = rd32(E1000_RAH(i));

        for (i = 0; i < 4; i++)
                regs_buff[211 + i] = rd32(E1000_TDBAL(i));
        for (i = 0; i < 4; i++)
                regs_buff[215 + i] = rd32(E1000_TDBAH(i));
        for (i = 0; i < 4; i++)
                regs_buff[219 + i] = rd32(E1000_TDLEN(i));
        for (i = 0; i < 4; i++)
                regs_buff[223 + i] = rd32(E1000_TDH(i));
        for (i = 0; i < 4; i++)
                regs_buff[227 + i] = rd32(E1000_TDT(i));
        for (i = 0; i < 4; i++)
                regs_buff[231 + i] = rd32(E1000_TXDCTL(i));
        for (i = 0; i < 4; i++)
                regs_buff[235 + i] = rd32(E1000_TDWBAL(i));
        for (i = 0; i < 4; i++)
                regs_buff[239 + i] = rd32(E1000_TDWBAH(i));
        for (i = 0; i < 4; i++)
                regs_buff[243 + i] = rd32(E1000_DCA_TXCTRL(i));

        for (i = 0; i < 4; i++)
                regs_buff[247 + i] = rd32(E1000_IP4AT_REG(i));
        for (i = 0; i < 4; i++)
                regs_buff[251 + i] = rd32(E1000_IP6AT_REG(i));
        for (i = 0; i < 32; i++)
                regs_buff[255 + i] = rd32(E1000_WUPM_REG(i));
        for (i = 0; i < 128; i++)
                regs_buff[287 + i] = rd32(E1000_FFMT_REG(i));
        for (i = 0; i < 128; i++)
                regs_buff[415 + i] = rd32(E1000_FFVT_REG(i));
        for (i = 0; i < 4; i++)
                regs_buff[543 + i] = rd32(E1000_FFLT_REG(i));

        regs_buff[547] = rd32(E1000_TDFH);
        regs_buff[548] = rd32(E1000_TDFT);
        regs_buff[549] = rd32(E1000_TDFHS);
        regs_buff[550] = rd32(E1000_TDFPC);

        if (hw->mac.type > e1000_82580) {
                regs_buff[551] = adapter->stats.o2bgptc;
                regs_buff[552] = adapter->stats.b2ospc;
                regs_buff[553] = adapter->stats.o2bspc;
                regs_buff[554] = adapter->stats.b2ogprc;
        }

        if (hw->mac.type != e1000_82576)
                return;
        for (i = 0; i < 12; i++)
                regs_buff[555 + i] = rd32(E1000_SRRCTL(i + 4));
        for (i = 0; i < 4; i++)
                regs_buff[567 + i] = rd32(E1000_PSRTYPE(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[571 + i] = rd32(E1000_RDBAL(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[583 + i] = rd32(E1000_RDBAH(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[595 + i] = rd32(E1000_RDLEN(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[607 + i] = rd32(E1000_RDH(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[619 + i] = rd32(E1000_RDT(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[631 + i] = rd32(E1000_RXDCTL(i + 4));

        for (i = 0; i < 12; i++)
                regs_buff[643 + i] = rd32(E1000_TDBAL(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[655 + i] = rd32(E1000_TDBAH(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[667 + i] = rd32(E1000_TDLEN(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[679 + i] = rd32(E1000_TDH(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[691 + i] = rd32(E1000_TDT(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[703 + i] = rd32(E1000_TXDCTL(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[715 + i] = rd32(E1000_TDWBAL(i + 4));
        for (i = 0; i < 12; i++)
                regs_buff[727 + i] = rd32(E1000_TDWBAH(i + 4));
}

static int igb_get_eeprom_len(struct net_device *netdev)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        return adapter->hw.nvm.word_size * 2;
}

static int igb_get_eeprom(struct net_device *netdev,
                          struct ethtool_eeprom *eeprom, u8 *bytes)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_hw *hw = &adapter->hw;
        u16 *eeprom_buff;
        int first_word, last_word;
        int ret_val = 0;
        u16 i;

        if (eeprom->len == 0)
                return -EINVAL;

        eeprom->magic = hw->vendor_id | (hw->device_id << 16);

        first_word = eeprom->offset >> 1;
        last_word = (eeprom->offset + eeprom->len - 1) >> 1;

        eeprom_buff = kmalloc(sizeof(u16) *
                        (last_word - first_word + 1), GFP_KERNEL);
        if (!eeprom_buff)
                return -ENOMEM;

        if (hw->nvm.type == e1000_nvm_eeprom_spi)
                ret_val = hw->nvm.ops.read(hw, first_word,
                                           last_word - first_word + 1,
                                           eeprom_buff);
        else {
                for (i = 0; i < last_word - first_word + 1; i++) {
                        ret_val = hw->nvm.ops.read(hw, first_word + i, 1,
                                                   &eeprom_buff[i]);
                        if (ret_val)
                                break;
                }
        }

        /* Device's eeprom is always little-endian, word addressable */
        for (i = 0; i < last_word - first_word + 1; i++)
                le16_to_cpus(&eeprom_buff[i]);

        memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1),
                        eeprom->len);
        kfree(eeprom_buff);

        return ret_val;
}

static int igb_set_eeprom(struct net_device *netdev,
                          struct ethtool_eeprom *eeprom, u8 *bytes)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_hw *hw = &adapter->hw;
        u16 *eeprom_buff;
        void *ptr;
        int max_len, first_word, last_word, ret_val = 0;
        u16 i;

        if (eeprom->len == 0)
                return -EOPNOTSUPP;

        if ((hw->mac.type >= e1000_i210) &&
            !igb_get_flash_presence_i210(hw)) {
                return -EOPNOTSUPP;
        }

        if (eeprom->magic != (hw->vendor_id | (hw->device_id << 16)))
                return -EFAULT;

        max_len = hw->nvm.word_size * 2;

        first_word = eeprom->offset >> 1;
        last_word = (eeprom->offset + eeprom->len - 1) >> 1;
        eeprom_buff = kmalloc(max_len, GFP_KERNEL);
        if (!eeprom_buff)
                return -ENOMEM;

        ptr = (void *)eeprom_buff;

        if (eeprom->offset & 1) {
                /* need read/modify/write of first changed EEPROM word
                 * only the second byte of the word is being modified
                 */
                ret_val = hw->nvm.ops.read(hw, first_word, 1,
                                            &eeprom_buff[0]);
                ptr++;
        }
        if (((eeprom->offset + eeprom->len) & 1) && (ret_val == 0)) {
                /* need read/modify/write of last changed EEPROM word
                 * only the first byte of the word is being modified
                 */
                ret_val = hw->nvm.ops.read(hw, last_word, 1,
                                   &eeprom_buff[last_word - first_word]);
        }

        /* Device's eeprom is always little-endian, word addressable */
        for (i = 0; i < last_word - first_word + 1; i++)
                le16_to_cpus(&eeprom_buff[i]);

        memcpy(ptr, bytes, eeprom->len);

        for (i = 0; i < last_word - first_word + 1; i++)
                eeprom_buff[i] = cpu_to_le16(eeprom_buff[i]);

        ret_val = hw->nvm.ops.write(hw, first_word,
                                    last_word - first_word + 1, eeprom_buff);

        /* Update the checksum if nvm write succeeded */
        if (ret_val == 0)
                hw->nvm.ops.update(hw);

        igb_set_fw_version(adapter);
        kfree(eeprom_buff);
        return ret_val;
}

static void igb_get_drvinfo(struct net_device *netdev,
                            struct ethtool_drvinfo *drvinfo)
{
        struct igb_adapter *adapter = netdev_priv(netdev);

        strlcpy(drvinfo->driver,  igb_driver_name, sizeof(drvinfo->driver));
        strlcpy(drvinfo->version, igb_driver_version, sizeof(drvinfo->version));

        /* EEPROM image version # is reported as firmware version # for
         * 82575 controllers
         */
        strlcpy(drvinfo->fw_version, adapter->fw_version,
                sizeof(drvinfo->fw_version));
        strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
                sizeof(drvinfo->bus_info));

        drvinfo->n_priv_flags = IGB_PRIV_FLAGS_STR_LEN;
}

static void igb_get_ringparam(struct net_device *netdev,
                              struct ethtool_ringparam *ring)
{
        struct igb_adapter *adapter = netdev_priv(netdev);

        ring->rx_max_pending = IGB_MAX_RXD;
        ring->tx_max_pending = IGB_MAX_TXD;
        ring->rx_pending = adapter->rx_ring_count;
        ring->tx_pending = adapter->tx_ring_count;
}

static int igb_set_ringparam(struct net_device *netdev,
                             struct ethtool_ringparam *ring)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct igb_ring *temp_ring;
        int i, err = 0;
        u16 new_rx_count, new_tx_count;

        if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
                return -EINVAL;

        new_rx_count = min_t(u32, ring->rx_pending, IGB_MAX_RXD);
        new_rx_count = max_t(u16, new_rx_count, IGB_MIN_RXD);
        new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);

        new_tx_count = min_t(u32, ring->tx_pending, IGB_MAX_TXD);
        new_tx_count = max_t(u16, new_tx_count, IGB_MIN_TXD);
        new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);

        if ((new_tx_count == adapter->tx_ring_count) &&
            (new_rx_count == adapter->rx_ring_count)) {
                /* nothing to do */
                return 0;
        }

        while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
                usleep_range(1000, 2000);

        if (!netif_running(adapter->netdev)) {
                for (i = 0; i < adapter->num_tx_queues; i++)
                        adapter->tx_ring[i]->count = new_tx_count;
                for (i = 0; i < adapter->num_rx_queues; i++)
                        adapter->rx_ring[i]->count = new_rx_count;
                adapter->tx_ring_count = new_tx_count;
                adapter->rx_ring_count = new_rx_count;
                goto clear_reset;
        }

        if (adapter->num_tx_queues > adapter->num_rx_queues)
                temp_ring = vmalloc(adapter->num_tx_queues *
                                    sizeof(struct igb_ring));
        else
                temp_ring = vmalloc(adapter->num_rx_queues *
                                    sizeof(struct igb_ring));

        if (!temp_ring) {
                err = -ENOMEM;
                goto clear_reset;
        }

        igb_down(adapter);

        /* We can't just free everything and then setup again,
         * because the ISRs in MSI-X mode get passed pointers
         * to the Tx and Rx ring structs.
         */
        if (new_tx_count != adapter->tx_ring_count) {
                for (i = 0; i < adapter->num_tx_queues; i++) {
                        memcpy(&temp_ring[i], adapter->tx_ring[i],
                               sizeof(struct igb_ring));

                        temp_ring[i].count = new_tx_count;
                        err = igb_setup_tx_resources(&temp_ring[i]);
                        if (err) {
                                while (i) {
                                        i--;
                                        igb_free_tx_resources(&temp_ring[i]);
                                }
                                goto err_setup;
                        }
                }

                for (i = 0; i < adapter->num_tx_queues; i++) {
                        igb_free_tx_resources(adapter->tx_ring[i]);

                        memcpy(adapter->tx_ring[i], &temp_ring[i],
                               sizeof(struct igb_ring));
                }

                adapter->tx_ring_count = new_tx_count;
        }

        if (new_rx_count != adapter->rx_ring_count) {
                for (i = 0; i < adapter->num_rx_queues; i++) {
                        memcpy(&temp_ring[i], adapter->rx_ring[i],
                               sizeof(struct igb_ring));

                        temp_ring[i].count = new_rx_count;
                        err = igb_setup_rx_resources(&temp_ring[i]);
                        if (err) {
                                while (i) {
                                        i--;
                                        igb_free_rx_resources(&temp_ring[i]);
                                }
                                goto err_setup;
                        }

                }

                for (i = 0; i < adapter->num_rx_queues; i++) {
                        igb_free_rx_resources(adapter->rx_ring[i]);

                        memcpy(adapter->rx_ring[i], &temp_ring[i],
                               sizeof(struct igb_ring));
                }

                adapter->rx_ring_count = new_rx_count;
        }
err_setup:
        igb_up(adapter);
        vfree(temp_ring);
clear_reset:
        clear_bit(__IGB_RESETTING, &adapter->state);
        return err;
}

/* ethtool register test data */
struct igb_reg_test {
        u16 reg;
        u16 reg_offset;
        u16 array_len;
        u16 test_type;
        u32 mask;
        u32 write;
};

/* In the hardware, registers are laid out either singly, in arrays
 * spaced 0x100 bytes apart, or in contiguous tables.  We assume
 * most tests take place on arrays or single registers (handled
 * as a single-element array) and special-case the tables.
 * Table tests are always pattern tests.
 *
 * We also make provision for some required setup steps by specifying
 * registers to be written without any read-back testing.
 */

#define PATTERN_TEST    1
#define SET_READ_TEST   2
#define WRITE_NO_TEST   3
#define TABLE32_TEST    4
#define TABLE64_TEST_LO 5
#define TABLE64_TEST_HI 6

/* i210 reg test */
static struct igb_reg_test reg_test_i210[] = {
        { E1000_FCAL,      0x100, 1,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_FCAH,      0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_FCT,       0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_RDBAL(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_RDBAH(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
        /* RDH is read-only for i210, only test RDT. */
        { E1000_RDT(0),    0x100, 4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_FCRTH,     0x100, 1,  PATTERN_TEST, 0x0000FFF0, 0x0000FFF0 },
        { E1000_FCTTV,     0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_TIPG,      0x100, 1,  PATTERN_TEST, 0x3FFFFFFF, 0x3FFFFFFF },
        { E1000_TDBAL(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_TDBAH(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_TDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
        { E1000_TDT(0),    0x100, 4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0x04CFB0FE, 0x003FFFFB },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0x04CFB0FE, 0xFFFFFFFF },
        { E1000_TCTL,      0x100, 1,  SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_RA,        0, 16, TABLE64_TEST_LO,
                                                0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RA,        0, 16, TABLE64_TEST_HI,
                                                0x900FFFFF, 0xFFFFFFFF },
        { E1000_MTA,       0, 128, TABLE32_TEST,
                                                0xFFFFFFFF, 0xFFFFFFFF },
        { 0, 0, 0, 0, 0 }
};

/* i350 reg test */
static struct igb_reg_test reg_test_i350[] = {
        { E1000_FCAL,      0x100, 1,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_FCAH,      0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_FCT,       0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_VET,       0x100, 1,  PATTERN_TEST, 0xFFFF0000, 0xFFFF0000 },
        { E1000_RDBAL(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_RDBAH(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
        { E1000_RDBAL(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_RDBAH(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDLEN(4),  0x40,  4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
        /* RDH is read-only for i350, only test RDT. */
        { E1000_RDT(0),    0x100, 4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_RDT(4),    0x40,  4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_FCRTH,     0x100, 1,  PATTERN_TEST, 0x0000FFF0, 0x0000FFF0 },
        { E1000_FCTTV,     0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_TIPG,      0x100, 1,  PATTERN_TEST, 0x3FFFFFFF, 0x3FFFFFFF },
        { E1000_TDBAL(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_TDBAH(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_TDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
        { E1000_TDBAL(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_TDBAH(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_TDLEN(4),  0x40,  4,  PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
        { E1000_TDT(0),    0x100, 4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_TDT(4),    0x40,  4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0x04CFB0FE, 0x003FFFFB },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0x04CFB0FE, 0xFFFFFFFF },
        { E1000_TCTL,      0x100, 1,  SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_RA,        0, 16, TABLE64_TEST_LO,
                                                0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RA,        0, 16, TABLE64_TEST_HI,
                                                0xC3FFFFFF, 0xFFFFFFFF },
        { E1000_RA2,       0, 16, TABLE64_TEST_LO,
                                                0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RA2,       0, 16, TABLE64_TEST_HI,
                                                0xC3FFFFFF, 0xFFFFFFFF },
        { E1000_MTA,       0, 128, TABLE32_TEST,
                                                0xFFFFFFFF, 0xFFFFFFFF },
        { 0, 0, 0, 0 }
};

/* 82580 reg test */
static struct igb_reg_test reg_test_82580[] = {
        { E1000_FCAL,      0x100, 1,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_FCAH,      0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_FCT,       0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_VET,       0x100, 1,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDBAL(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_RDBAH(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
        { E1000_RDBAL(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_RDBAH(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDLEN(4),  0x40,  4,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
        /* RDH is read-only for 82580, only test RDT. */
        { E1000_RDT(0),    0x100, 4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_RDT(4),    0x40,  4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_FCRTH,     0x100, 1,  PATTERN_TEST, 0x0000FFF0, 0x0000FFF0 },
        { E1000_FCTTV,     0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_TIPG,      0x100, 1,  PATTERN_TEST, 0x3FFFFFFF, 0x3FFFFFFF },
        { E1000_TDBAL(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_TDBAH(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_TDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
        { E1000_TDBAL(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_TDBAH(4),  0x40,  4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_TDLEN(4),  0x40,  4,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
        { E1000_TDT(0),    0x100, 4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_TDT(4),    0x40,  4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0x04CFB0FE, 0x003FFFFB },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0x04CFB0FE, 0xFFFFFFFF },
        { E1000_TCTL,      0x100, 1,  SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_RA,        0, 16, TABLE64_TEST_LO,
                                                0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RA,        0, 16, TABLE64_TEST_HI,
                                                0x83FFFFFF, 0xFFFFFFFF },
        { E1000_RA2,       0, 8, TABLE64_TEST_LO,
                                                0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RA2,       0, 8, TABLE64_TEST_HI,
                                                0x83FFFFFF, 0xFFFFFFFF },
        { E1000_MTA,       0, 128, TABLE32_TEST,
                                                0xFFFFFFFF, 0xFFFFFFFF },
        { 0, 0, 0, 0 }
};

/* 82576 reg test */
static struct igb_reg_test reg_test_82576[] = {
        { E1000_FCAL,      0x100, 1,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_FCAH,      0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_FCT,       0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_VET,       0x100, 1,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDBAL(0),  0x100, 4, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_RDBAH(0),  0x100, 4, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDLEN(0),  0x100, 4, PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
        { E1000_RDBAL(4),  0x40, 12, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_RDBAH(4),  0x40, 12, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDLEN(4),  0x40, 12, PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
        /* Enable all RX queues before testing. */
        { E1000_RXDCTL(0), 0x100, 4, WRITE_NO_TEST, 0,
          E1000_RXDCTL_QUEUE_ENABLE },
        { E1000_RXDCTL(4), 0x40, 12, WRITE_NO_TEST, 0,
          E1000_RXDCTL_QUEUE_ENABLE },
        /* RDH is read-only for 82576, only test RDT. */
        { E1000_RDT(0),    0x100, 4,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_RDT(4),    0x40, 12,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_RXDCTL(0), 0x100, 4,  WRITE_NO_TEST, 0, 0 },
        { E1000_RXDCTL(4), 0x40, 12,  WRITE_NO_TEST, 0, 0 },
        { E1000_FCRTH,     0x100, 1,  PATTERN_TEST, 0x0000FFF0, 0x0000FFF0 },
        { E1000_FCTTV,     0x100, 1,  PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_TIPG,      0x100, 1,  PATTERN_TEST, 0x3FFFFFFF, 0x3FFFFFFF },
        { E1000_TDBAL(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_TDBAH(0),  0x100, 4,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_TDLEN(0),  0x100, 4,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
        { E1000_TDBAL(4),  0x40, 12,  PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_TDBAH(4),  0x40, 12,  PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_TDLEN(4),  0x40, 12,  PATTERN_TEST, 0x000FFFF0, 0x000FFFFF },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0x04CFB0FE, 0x003FFFFB },
        { E1000_RCTL,      0x100, 1,  SET_READ_TEST, 0x04CFB0FE, 0xFFFFFFFF },
        { E1000_TCTL,      0x100, 1,  SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_RA,        0, 16, TABLE64_TEST_LO, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RA,        0, 16, TABLE64_TEST_HI, 0x83FFFFFF, 0xFFFFFFFF },
        { E1000_RA2,       0, 8, TABLE64_TEST_LO, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RA2,       0, 8, TABLE64_TEST_HI, 0x83FFFFFF, 0xFFFFFFFF },
        { E1000_MTA,       0, 128, TABLE32_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { 0, 0, 0, 0 }
};

/* 82575 register test */
static struct igb_reg_test reg_test_82575[] = {
        { E1000_FCAL,      0x100, 1, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_FCAH,      0x100, 1, PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_FCT,       0x100, 1, PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
        { E1000_VET,       0x100, 1, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDBAL(0),  0x100, 4, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_RDBAH(0),  0x100, 4, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RDLEN(0),  0x100, 4, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
        /* Enable all four RX queues before testing. */
        { E1000_RXDCTL(0), 0x100, 4, WRITE_NO_TEST, 0,
          E1000_RXDCTL_QUEUE_ENABLE },
        /* RDH is read-only for 82575, only test RDT. */
        { E1000_RDT(0),    0x100, 4, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_RXDCTL(0), 0x100, 4, WRITE_NO_TEST, 0, 0 },
        { E1000_FCRTH,     0x100, 1, PATTERN_TEST, 0x0000FFF0, 0x0000FFF0 },
        { E1000_FCTTV,     0x100, 1, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
        { E1000_TIPG,      0x100, 1, PATTERN_TEST, 0x3FFFFFFF, 0x3FFFFFFF },
        { E1000_TDBAL(0),  0x100, 4, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
        { E1000_TDBAH(0),  0x100, 4, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_TDLEN(0),  0x100, 4, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
        { E1000_RCTL,      0x100, 1, SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_RCTL,      0x100, 1, SET_READ_TEST, 0x04CFB3FE, 0x003FFFFB },
        { E1000_RCTL,      0x100, 1, SET_READ_TEST, 0x04CFB3FE, 0xFFFFFFFF },
        { E1000_TCTL,      0x100, 1, SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
        { E1000_TXCW,      0x100, 1, PATTERN_TEST, 0xC000FFFF, 0x0000FFFF },
        { E1000_RA,        0, 16, TABLE64_TEST_LO, 0xFFFFFFFF, 0xFFFFFFFF },
        { E1000_RA,        0, 16, TABLE64_TEST_HI, 0x800FFFFF, 0xFFFFFFFF },
        { E1000_MTA,       0, 128, TABLE32_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
        { 0, 0, 0, 0 }
};

static bool reg_pattern_test(struct igb_adapter *adapter, u64 *data,
                             int reg, u32 mask, u32 write)
{
        struct e1000_hw *hw = &adapter->hw;
        u32 pat, val;
        static const u32 _test[] = {
                0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF};
        for (pat = 0; pat < ARRAY_SIZE(_test); pat++) {
                wr32(reg, (_test[pat] & write));
                val = rd32(reg) & mask;
                if (val != (_test[pat] & write & mask)) {
                        dev_err(&adapter->pdev->dev,
                                "pattern test reg %04X failed: got 0x%08X expected 0x%08X\n",
                                reg, val, (_test[pat] & write & mask));
                        *data = reg;
                        return true;
                }
        }

        return false;
}

static bool reg_set_and_check(struct igb_adapter *adapter, u64 *data,
                              int reg, u32 mask, u32 write)
{
        struct e1000_hw *hw = &adapter->hw;
        u32 val;

        wr32(reg, write & mask);
        val = rd32(reg);
        if ((write & mask) != (val & mask)) {
                dev_err(&adapter->pdev->dev,
                        "set/check reg %04X test failed: got 0x%08X expected 0x%08X\n",
                        reg, (val & mask), (write & mask));
                *data = reg;
                return true;
        }

        return false;
}

#define REG_PATTERN_TEST(reg, mask, write) \
        do { \
                if (reg_pattern_test(adapter, data, reg, mask, write)) \
                        return 1; \
        } while (0)

#define REG_SET_AND_CHECK(reg, mask, write) \
        do { \
                if (reg_set_and_check(adapter, data, reg, mask, write)) \
                        return 1; \
        } while (0)

static int igb_reg_test(struct igb_adapter *adapter, u64 *data)
{
        struct e1000_hw *hw = &adapter->hw;
        struct igb_reg_test *test;
        u32 value, before, after;
        u32 i, toggle;

        switch (adapter->hw.mac.type) {
        case e1000_i350:
        case e1000_i354:
                test = reg_test_i350;
                toggle = 0x7FEFF3FF;
                break;
        case e1000_i210:
        case e1000_i211:
                test = reg_test_i210;
                toggle = 0x7FEFF3FF;
                break;
        case e1000_82580:
                test = reg_test_82580;
                toggle = 0x7FEFF3FF;
                break;
        case e1000_82576:
                test = reg_test_82576;
                toggle = 0x7FFFF3FF;
                break;
        default:
                test = reg_test_82575;
                toggle = 0x7FFFF3FF;
                break;
        }

        /* Because the status register is such a special case,
         * we handle it separately from the rest of the register
         * tests.  Some bits are read-only, some toggle, and some
         * are writable on newer MACs.
         */
        before = rd32(E1000_STATUS);
        value = (rd32(E1000_STATUS) & toggle);
        wr32(E1000_STATUS, toggle);
        after = rd32(E1000_STATUS) & toggle;
        if (value != after) {
                dev_err(&adapter->pdev->dev,
                        "failed STATUS register test got: 0x%08X expected: 0x%08X\n",
                        after, value);
                *data = 1;
                return 1;
        }
        /* restore previous status */
        wr32(E1000_STATUS, before);

        /* Perform the remainder of the register test, looping through
         * the test table until we either fail or reach the null entry.
         */
        while (test->reg) {
                for (i = 0; i < test->array_len; i++) {
                        switch (test->test_type) {
                        case PATTERN_TEST:
                                REG_PATTERN_TEST(test->reg +
                                                (i * test->reg_offset),
                                                test->mask,
                                                test->write);
                                break;
                        case SET_READ_TEST:
                                REG_SET_AND_CHECK(test->reg +
                                                (i * test->reg_offset),
                                                test->mask,
                                                test->write);
                                break;
                        case WRITE_NO_TEST:
                                writel(test->write,
                                    (adapter->hw.hw_addr + test->reg)
                                        + (i * test->reg_offset));
                                break;
                        case TABLE32_TEST:
                                REG_PATTERN_TEST(test->reg + (i * 4),
                                                test->mask,
                                                test->write);
                                break;
                        case TABLE64_TEST_LO:
                                REG_PATTERN_TEST(test->reg + (i * 8),
                                                test->mask,
                                                test->write);
                                break;
                        case TABLE64_TEST_HI:
                                REG_PATTERN_TEST((test->reg + 4) + (i * 8),
                                                test->mask,
                                                test->write);
                                break;
                        }
                }
                test++;
        }

        *data = 0;
        return 0;
}

static int igb_eeprom_test(struct igb_adapter *adapter, u64 *data)
{
        struct e1000_hw *hw = &adapter->hw;

        *data = 0;

        /* Validate eeprom on all parts but flashless */
        switch (hw->mac.type) {
        case e1000_i210:
        case e1000_i211:
                if (igb_get_flash_presence_i210(hw)) {
                        if (adapter->hw.nvm.ops.validate(&adapter->hw) < 0)
                                *data = 2;
                }
                break;
        default:
                if (adapter->hw.nvm.ops.validate(&adapter->hw) < 0)
                        *data = 2;
                break;
        }

        return *data;
}

static irqreturn_t igb_test_intr(int irq, void *data)
{
        struct igb_adapter *adapter = (struct igb_adapter *) data;
        struct e1000_hw *hw = &adapter->hw;

        adapter->test_icr |= rd32(E1000_ICR);

        return IRQ_HANDLED;
}

static int igb_intr_test(struct igb_adapter *adapter, u64 *data)
{
        struct e1000_hw *hw = &adapter->hw;
        struct net_device *netdev = adapter->netdev;
        u32 mask, ics_mask, i = 0, shared_int = true;
        u32 irq = adapter->pdev->irq;

        *data = 0;

        /* Hook up test interrupt handler just for this test */
        if (adapter->flags & IGB_FLAG_HAS_MSIX) {
                if (request_irq(adapter->msix_entries[0].vector,
                                igb_test_intr, 0, netdev->name, adapter)) {
                        *data = 1;
                        return -1;
                }
        } else if (adapter->flags & IGB_FLAG_HAS_MSI) {
                shared_int = false;
                if (request_irq(irq,
                                igb_test_intr, 0, netdev->name, adapter)) {
                        *data = 1;
                        return -1;
                }
        } else if (!request_irq(irq, igb_test_intr, IRQF_PROBE_SHARED,
                                netdev->name, adapter)) {
                shared_int = false;
        } else if (request_irq(irq, igb_test_intr, IRQF_SHARED,
                 netdev->name, adapter)) {
                *data = 1;
                return -1;
        }
        dev_info(&adapter->pdev->dev, "testing %s interrupt\n",
                (shared_int ? "shared" : "unshared"));

        /* Disable all the interrupts */
        wr32(E1000_IMC, ~0);
        wrfl();
        usleep_range(10000, 11000);

        /* Define all writable bits for ICS */
        switch (hw->mac.type) {
        case e1000_82575:
                ics_mask = 0x37F47EDD;
                break;
        case e1000_82576:
                ics_mask = 0x77D4FBFD;
                break;
        case e1000_82580:
                ics_mask = 0x77DCFED5;
                break;
        case e1000_i350:
        case e1000_i354:
        case e1000_i210:
        case e1000_i211:
                ics_mask = 0x77DCFED5;
                break;
        default:
                ics_mask = 0x7FFFFFFF;
                break;
        }

        /* Test each interrupt */
        for (; i < 31; i++) {
                /* Interrupt to test */
                mask = BIT(i);

                if (!(mask & ics_mask))
                        continue;

                if (!shared_int) {
                        /* Disable the interrupt to be reported in
                         * the cause register and then force the same
                         * interrupt and see if one gets posted.  If
                         * an interrupt was posted to the bus, the
                         * test failed.
                         */
                        adapter->test_icr = 0;

                        /* Flush any pending interrupts */
                        wr32(E1000_ICR, ~0);

                        wr32(E1000_IMC, mask);
                        wr32(E1000_ICS, mask);
                        wrfl();
                        usleep_range(10000, 11000);

                        if (adapter->test_icr & mask) {
                                *data = 3;
                                break;
                        }
                }

                /* Enable the interrupt to be reported in
                 * the cause register and then force the same
                 * interrupt and see if one gets posted.  If
                 * an interrupt was not posted to the bus, the
                 * test failed.
                 */
                adapter->test_icr = 0;

                /* Flush any pending interrupts */
                wr32(E1000_ICR, ~0);

                wr32(E1000_IMS, mask);
                wr32(E1000_ICS, mask);
                wrfl();
                usleep_range(10000, 11000);

                if (!(adapter->test_icr & mask)) {
                        *data = 4;
                        break;
                }

                if (!shared_int) {
                        /* Disable the other interrupts to be reported in
                         * the cause register and then force the other
                         * interrupts and see if any get posted.  If
                         * an interrupt was posted to the bus, the
                         * test failed.
                         */
                        adapter->test_icr = 0;

                        /* Flush any pending interrupts */
                        wr32(E1000_ICR, ~0);

                        wr32(E1000_IMC, ~mask);
                        wr32(E1000_ICS, ~mask);
                        wrfl();
                        usleep_range(10000, 11000);

                        if (adapter->test_icr & mask) {
                                *data = 5;
                                break;
                        }
                }
        }

        /* Disable all the interrupts */
        wr32(E1000_IMC, ~0);
        wrfl();
        usleep_range(10000, 11000);

        /* Unhook test interrupt handler */
        if (adapter->flags & IGB_FLAG_HAS_MSIX)
                free_irq(adapter->msix_entries[0].vector, adapter);
        else
                free_irq(irq, adapter);

        return *data;
}

static void igb_free_desc_rings(struct igb_adapter *adapter)
{
        igb_free_tx_resources(&adapter->test_tx_ring);
        igb_free_rx_resources(&adapter->test_rx_ring);
}

static int igb_setup_desc_rings(struct igb_adapter *adapter)
{
        struct igb_ring *tx_ring = &adapter->test_tx_ring;
        struct igb_ring *rx_ring = &adapter->test_rx_ring;
        struct e1000_hw *hw = &adapter->hw;
        int ret_val;

        /* Setup Tx descriptor ring and Tx buffers */
        tx_ring->count = IGB_DEFAULT_TXD;
        tx_ring->dev = &adapter->pdev->dev;
        tx_ring->netdev = adapter->netdev;
        tx_ring->reg_idx = adapter->vfs_allocated_count;

        if (igb_setup_tx_resources(tx_ring)) {
                ret_val = 1;
                goto err_nomem;
        }

        igb_setup_tctl(adapter);
        igb_configure_tx_ring(adapter, tx_ring);

        /* Setup Rx descriptor ring and Rx buffers */
        rx_ring->count = IGB_DEFAULT_RXD;
        rx_ring->dev = &adapter->pdev->dev;
        rx_ring->netdev = adapter->netdev;
        rx_ring->reg_idx = adapter->vfs_allocated_count;

        if (igb_setup_rx_resources(rx_ring)) {
                ret_val = 3;
                goto err_nomem;
        }

        /* set the default queue to queue 0 of PF */
        wr32(E1000_MRQC, adapter->vfs_allocated_count << 3);

        /* enable receive ring */
        igb_setup_rctl(adapter);
        igb_configure_rx_ring(adapter, rx_ring);

        igb_alloc_rx_buffers(rx_ring, igb_desc_unused(rx_ring));

        return 0;

err_nomem:
        igb_free_desc_rings(adapter);
        return ret_val;
}

static void igb_phy_disable_receiver(struct igb_adapter *adapter)
{
        struct e1000_hw *hw = &adapter->hw;

        /* Write out to PHY registers 29 and 30 to disable the Receiver. */
        igb_write_phy_reg(hw, 29, 0x001F);
        igb_write_phy_reg(hw, 30, 0x8FFC);
        igb_write_phy_reg(hw, 29, 0x001A);
        igb_write_phy_reg(hw, 30, 0x8FF0);
}

static int igb_integrated_phy_loopback(struct igb_adapter *adapter)
{
        struct e1000_hw *hw = &adapter->hw;
        u32 ctrl_reg = 0;

        hw->mac.autoneg = false;

        if (hw->phy.type == e1000_phy_m88) {
                if (hw->phy.id != I210_I_PHY_ID) {
                        /* Auto-MDI/MDIX Off */
                        igb_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, 0x0808);
                        /* reset to update Auto-MDI/MDIX */
                        igb_write_phy_reg(hw, PHY_CONTROL, 0x9140);
                        /* autoneg off */
                        igb_write_phy_reg(hw, PHY_CONTROL, 0x8140);
                } else {
                        /* force 1000, set loopback  */
                        igb_write_phy_reg(hw, I347AT4_PAGE_SELECT, 0);
                        igb_write_phy_reg(hw, PHY_CONTROL, 0x4140);
                }
        } else if (hw->phy.type == e1000_phy_82580) {
                /* enable MII loopback */
                igb_write_phy_reg(hw, I82580_PHY_LBK_CTRL, 0x8041);
        }

        /* add small delay to avoid loopback test failure */
        msleep(50);

        /* force 1000, set loopback */
        igb_write_phy_reg(hw, PHY_CONTROL, 0x4140);

        /* Now set up the MAC to the same speed/duplex as the PHY. */
        ctrl_reg = rd32(E1000_CTRL);
        ctrl_reg &= ~E1000_CTRL_SPD_SEL; /* Clear the speed sel bits */
        ctrl_reg |= (E1000_CTRL_FRCSPD | /* Set the Force Speed Bit */
                     E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
                     E1000_CTRL_SPD_1000 |/* Force Speed to 1000 */
                     E1000_CTRL_FD |     /* Force Duplex to FULL */
                     E1000_CTRL_SLU);    /* Set link up enable bit */

        if (hw->phy.type == e1000_phy_m88)
                ctrl_reg |= E1000_CTRL_ILOS; /* Invert Loss of Signal */

        wr32(E1000_CTRL, ctrl_reg);

        /* Disable the receiver on the PHY so when a cable is plugged in, the
         * PHY does not begin to autoneg when a cable is reconnected to the NIC.
         */
        if (hw->phy.type == e1000_phy_m88)
                igb_phy_disable_receiver(adapter);

        mdelay(500);
        return 0;
}

static int igb_set_phy_loopback(struct igb_adapter *adapter)
{
        return igb_integrated_phy_loopback(adapter);
}

static int igb_setup_loopback_test(struct igb_adapter *adapter)
{
        struct e1000_hw *hw = &adapter->hw;
        u32 reg;

        reg = rd32(E1000_CTRL_EXT);

        /* use CTRL_EXT to identify link type as SGMII can appear as copper */
        if (reg & E1000_CTRL_EXT_LINK_MODE_MASK) {
                if ((hw->device_id == E1000_DEV_ID_DH89XXCC_SGMII) ||
                (hw->device_id == E1000_DEV_ID_DH89XXCC_SERDES) ||
                (hw->device_id == E1000_DEV_ID_DH89XXCC_BACKPLANE) ||
                (hw->device_id == E1000_DEV_ID_DH89XXCC_SFP) ||
                (hw->device_id == E1000_DEV_ID_I354_SGMII) ||
                (hw->device_id == E1000_DEV_ID_I354_BACKPLANE_2_5GBPS)) {
                        /* Enable DH89xxCC MPHY for near end loopback */
                        reg = rd32(E1000_MPHY_ADDR_CTL);
                        reg = (reg & E1000_MPHY_ADDR_CTL_OFFSET_MASK) |
                        E1000_MPHY_PCS_CLK_REG_OFFSET;
                        wr32(E1000_MPHY_ADDR_CTL, reg);

                        reg = rd32(E1000_MPHY_DATA);
                        reg |= E1000_MPHY_PCS_CLK_REG_DIGINELBEN;
                        wr32(E1000_MPHY_DATA, reg);
                }

                reg = rd32(E1000_RCTL);
                reg |= E1000_RCTL_LBM_TCVR;
                wr32(E1000_RCTL, reg);

                wr32(E1000_SCTL, E1000_ENABLE_SERDES_LOOPBACK);

                reg = rd32(E1000_CTRL);
                reg &= ~(E1000_CTRL_RFCE |
                         E1000_CTRL_TFCE |
                         E1000_CTRL_LRST);
                reg |= E1000_CTRL_SLU |
                       E1000_CTRL_FD;
                wr32(E1000_CTRL, reg);

                /* Unset switch control to serdes energy detect */
                reg = rd32(E1000_CONNSW);
                reg &= ~E1000_CONNSW_ENRGSRC;
                wr32(E1000_CONNSW, reg);

                /* Unset sigdetect for SERDES loopback on
                 * 82580 and newer devices.
                 */
                if (hw->mac.type >= e1000_82580) {
                        reg = rd32(E1000_PCS_CFG0);
                        reg |= E1000_PCS_CFG_IGN_SD;
                        wr32(E1000_PCS_CFG0, reg);
                }

                /* Set PCS register for forced speed */
                reg = rd32(E1000_PCS_LCTL);
                reg &= ~E1000_PCS_LCTL_AN_ENABLE;     /* Disable Autoneg*/
                reg |= E1000_PCS_LCTL_FLV_LINK_UP |   /* Force link up */
                       E1000_PCS_LCTL_FSV_1000 |      /* Force 1000    */
                       E1000_PCS_LCTL_FDV_FULL |      /* SerDes Full duplex */
                       E1000_PCS_LCTL_FSD |           /* Force Speed */
                       E1000_PCS_LCTL_FORCE_LINK;     /* Force Link */
                wr32(E1000_PCS_LCTL, reg);

                return 0;
        }

        return igb_set_phy_loopback(adapter);
}

static void igb_loopback_cleanup(struct igb_adapter *adapter)
{
        struct e1000_hw *hw = &adapter->hw;
        u32 rctl;
        u16 phy_reg;

        if ((hw->device_id == E1000_DEV_ID_DH89XXCC_SGMII) ||
        (hw->device_id == E1000_DEV_ID_DH89XXCC_SERDES) ||
        (hw->device_id == E1000_DEV_ID_DH89XXCC_BACKPLANE) ||
        (hw->device_id == E1000_DEV_ID_DH89XXCC_SFP) ||
        (hw->device_id == E1000_DEV_ID_I354_SGMII)) {
                u32 reg;

                /* Disable near end loopback on DH89xxCC */
                reg = rd32(E1000_MPHY_ADDR_CTL);
                reg = (reg & E1000_MPHY_ADDR_CTL_OFFSET_MASK) |
                E1000_MPHY_PCS_CLK_REG_OFFSET;
                wr32(E1000_MPHY_ADDR_CTL, reg);

                reg = rd32(E1000_MPHY_DATA);
                reg &= ~E1000_MPHY_PCS_CLK_REG_DIGINELBEN;
                wr32(E1000_MPHY_DATA, reg);
        }

        rctl = rd32(E1000_RCTL);
        rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
        wr32(E1000_RCTL, rctl);

        hw->mac.autoneg = true;
        igb_read_phy_reg(hw, PHY_CONTROL, &phy_reg);
        if (phy_reg & MII_CR_LOOPBACK) {
                phy_reg &= ~MII_CR_LOOPBACK;
                igb_write_phy_reg(hw, PHY_CONTROL, phy_reg);
                igb_phy_sw_reset(hw);
        }
}

static void igb_create_lbtest_frame(struct sk_buff *skb,
                                    unsigned int frame_size)
{
        memset(skb->data, 0xFF, frame_size);
        frame_size /= 2;
        memset(&skb->data[frame_size], 0xAA, frame_size - 1);
        memset(&skb->data[frame_size + 10], 0xBE, 1);
        memset(&skb->data[frame_size + 12], 0xAF, 1);
}

static int igb_check_lbtest_frame(struct igb_rx_buffer *rx_buffer,
                                  unsigned int frame_size)
{
        unsigned char *data;
        bool match = true;

        frame_size >>= 1;

        data = kmap(rx_buffer->page);

        if (data[3] != 0xFF ||
            data[frame_size + 10] != 0xBE ||
            data[frame_size + 12] != 0xAF)
                match = false;

        kunmap(rx_buffer->page);

        return match;
}

static int igb_clean_test_rings(struct igb_ring *rx_ring,
                                struct igb_ring *tx_ring,
                                unsigned int size)
{
        union e1000_adv_rx_desc *rx_desc;
        struct igb_rx_buffer *rx_buffer_info;
        struct igb_tx_buffer *tx_buffer_info;
        u16 rx_ntc, tx_ntc, count = 0;

        /* initialize next to clean and descriptor values */
        rx_ntc = rx_ring->next_to_clean;
        tx_ntc = tx_ring->next_to_clean;
        rx_desc = IGB_RX_DESC(rx_ring, rx_ntc);

        while (rx_desc->wb.upper.length) {
                /* check Rx buffer */
                rx_buffer_info = &rx_ring->rx_buffer_info[rx_ntc];

                /* sync Rx buffer for CPU read */
                dma_sync_single_for_cpu(rx_ring->dev,
                                        rx_buffer_info->dma,
                                        size,
                                        DMA_FROM_DEVICE);

                /* verify contents of skb */
                if (igb_check_lbtest_frame(rx_buffer_info, size))
                        count++;

                /* sync Rx buffer for device write */
                dma_sync_single_for_device(rx_ring->dev,
                                           rx_buffer_info->dma,
                                           size,
                                           DMA_FROM_DEVICE);

                /* unmap buffer on Tx side */
                tx_buffer_info = &tx_ring->tx_buffer_info[tx_ntc];

                /* Free all the Tx ring sk_buffs */
                dev_kfree_skb_any(tx_buffer_info->skb);

                /* unmap skb header data */
                dma_unmap_single(tx_ring->dev,
                                 dma_unmap_addr(tx_buffer_info, dma),
                                 dma_unmap_len(tx_buffer_info, len),
                                 DMA_TO_DEVICE);
                dma_unmap_len_set(tx_buffer_info, len, 0);

                /* increment Rx/Tx next to clean counters */
                rx_ntc++;
                if (rx_ntc == rx_ring->count)
                        rx_ntc = 0;
                tx_ntc++;
                if (tx_ntc == tx_ring->count)
                        tx_ntc = 0;

                /* fetch next descriptor */
                rx_desc = IGB_RX_DESC(rx_ring, rx_ntc);
        }

        netdev_tx_reset_queue(txring_txq(tx_ring));

        /* re-map buffers to ring, store next to clean values */
        igb_alloc_rx_buffers(rx_ring, count);
        rx_ring->next_to_clean = rx_ntc;
        tx_ring->next_to_clean = tx_ntc;

        return count;
}

static int igb_run_loopback_test(struct igb_adapter *adapter)
{
        struct igb_ring *tx_ring = &adapter->test_tx_ring;
        struct igb_ring *rx_ring = &adapter->test_rx_ring;
        u16 i, j, lc, good_cnt;
        int ret_val = 0;
        unsigned int size = IGB_RX_HDR_LEN;
        netdev_tx_t tx_ret_val;
        struct sk_buff *skb;

        /* allocate test skb */
        skb = alloc_skb(size, GFP_KERNEL);
        if (!skb)
                return 11;

        /* place data into test skb */
        igb_create_lbtest_frame(skb, size);
        skb_put(skb, size);

        /* Calculate the loop count based on the largest descriptor ring
         * The idea is to wrap the largest ring a number of times using 64
         * send/receive pairs during each loop
         */

        if (rx_ring->count <= tx_ring->count)
                lc = ((tx_ring->count / 64) * 2) + 1;
        else
                lc = ((rx_ring->count / 64) * 2) + 1;

        for (j = 0; j <= lc; j++) { /* loop count loop */
                /* reset count of good packets */
                good_cnt = 0;

                /* place 64 packets on the transmit queue*/
                for (i = 0; i < 64; i++) {
                        skb_get(skb);
                        tx_ret_val = igb_xmit_frame_ring(skb, tx_ring);
                        if (tx_ret_val == NETDEV_TX_OK)
                                good_cnt++;
                }

                if (good_cnt != 64) {
                        ret_val = 12;
                        break;
                }

                /* allow 200 milliseconds for packets to go from Tx to Rx */
                msleep(200);

                good_cnt = igb_clean_test_rings(rx_ring, tx_ring, size);
                if (good_cnt != 64) {
                        ret_val = 13;
                        break;
                }
        } /* end loop count loop */

        /* free the original skb */
        kfree_skb(skb);

        return ret_val;
}

static int igb_loopback_test(struct igb_adapter *adapter, u64 *data)
{
        /* PHY loopback cannot be performed if SoL/IDER
         * sessions are active
         */
        if (igb_check_reset_block(&adapter->hw)) {
                dev_err(&adapter->pdev->dev,
                        "Cannot do PHY loopback test when SoL/IDER is active.\n");
                *data = 0;
                goto out;
        }

        if (adapter->hw.mac.type == e1000_i354) {
                dev_info(&adapter->pdev->dev,
                        "Loopback test not supported on i354.\n");
                *data = 0;
                goto out;
        }
        *data = igb_setup_desc_rings(adapter);
        if (*data)
                goto out;
        *data = igb_setup_loopback_test(adapter);
        if (*data)
                goto err_loopback;
        *data = igb_run_loopback_test(adapter);
        igb_loopback_cleanup(adapter);

err_loopback:
        igb_free_desc_rings(adapter);
out:
        return *data;
}

static int igb_link_test(struct igb_adapter *adapter, u64 *data)
{
        struct e1000_hw *hw = &adapter->hw;
        *data = 0;
        if (hw->phy.media_type == e1000_media_type_internal_serdes) {
                int i = 0;

                hw->mac.serdes_has_link = false;

                /* On some blade server designs, link establishment
                 * could take as long as 2-3 minutes
                 */
                do {
                        hw->mac.ops.check_for_link(&adapter->hw);
                        if (hw->mac.serdes_has_link)
                                return *data;
                        msleep(20);
                } while (i++ < 3750);

                *data = 1;
        } else {
                hw->mac.ops.check_for_link(&adapter->hw);
                if (hw->mac.autoneg)
                        msleep(5000);

                if (!(rd32(E1000_STATUS) & E1000_STATUS_LU))
                        *data = 1;
        }
        return *data;
}

static void igb_diag_test(struct net_device *netdev,
                          struct ethtool_test *eth_test, u64 *data)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        u16 autoneg_advertised;
        u8 forced_speed_duplex, autoneg;
        bool if_running = netif_running(netdev);

        set_bit(__IGB_TESTING, &adapter->state);

        /* can't do offline tests on media switching devices */
        if (adapter->hw.dev_spec._82575.mas_capable)
                eth_test->flags &= ~ETH_TEST_FL_OFFLINE;
        if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
                /* Offline tests */

                /* save speed, duplex, autoneg settings */
                autoneg_advertised = adapter->hw.phy.autoneg_advertised;
                forced_speed_duplex = adapter->hw.mac.forced_speed_duplex;
                autoneg = adapter->hw.mac.autoneg;

                dev_info(&adapter->pdev->dev, "offline testing starting\n");

                /* power up link for link test */
                igb_power_up_link(adapter);

                /* Link test performed before hardware reset so autoneg doesn't
                 * interfere with test result
                 */
                if (igb_link_test(adapter, &data[TEST_LINK]))
                        eth_test->flags |= ETH_TEST_FL_FAILED;

                if (if_running)
                        /* indicate we're in test mode */
                        igb_close(netdev);
                else
                        igb_reset(adapter);

                if (igb_reg_test(adapter, &data[TEST_REG]))
                        eth_test->flags |= ETH_TEST_FL_FAILED;

                igb_reset(adapter);
                if (igb_eeprom_test(adapter, &data[TEST_EEP]))
                        eth_test->flags |= ETH_TEST_FL_FAILED;

                igb_reset(adapter);
                if (igb_intr_test(adapter, &data[TEST_IRQ]))
                        eth_test->flags |= ETH_TEST_FL_FAILED;

                igb_reset(adapter);
                /* power up link for loopback test */
                igb_power_up_link(adapter);
                if (igb_loopback_test(adapter, &data[TEST_LOOP]))
                        eth_test->flags |= ETH_TEST_FL_FAILED;

                /* restore speed, duplex, autoneg settings */
                adapter->hw.phy.autoneg_advertised = autoneg_advertised;
                adapter->hw.mac.forced_speed_duplex = forced_speed_duplex;
                adapter->hw.mac.autoneg = autoneg;

                /* force this routine to wait until autoneg complete/timeout */
                adapter->hw.phy.autoneg_wait_to_complete = true;
                igb_reset(adapter);
                adapter->hw.phy.autoneg_wait_to_complete = false;

                clear_bit(__IGB_TESTING, &adapter->state);
                if (if_running)
                        igb_open(netdev);
        } else {
                dev_info(&adapter->pdev->dev, "online testing starting\n");

                /* PHY is powered down when interface is down */
                if (if_running && igb_link_test(adapter, &data[TEST_LINK]))
                        eth_test->flags |= ETH_TEST_FL_FAILED;
                else
                        data[TEST_LINK] = 0;

                /* Online tests aren't run; pass by default */
                data[TEST_REG] = 0;
                data[TEST_EEP] = 0;
                data[TEST_IRQ] = 0;
                data[TEST_LOOP] = 0;

                clear_bit(__IGB_TESTING, &adapter->state);
        }
        msleep_interruptible(4 * 1000);
}

static void igb_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
        struct igb_adapter *adapter = netdev_priv(netdev);

        wol->wolopts = 0;

        if (!(adapter->flags & IGB_FLAG_WOL_SUPPORTED))
                return;

        wol->supported = WAKE_UCAST | WAKE_MCAST |
                         WAKE_BCAST | WAKE_MAGIC |
                         WAKE_PHY;

        /* apply any specific unsupported masks here */
        switch (adapter->hw.device_id) {
        default:
                break;
        }

        if (adapter->wol & E1000_WUFC_EX)
                wol->wolopts |= WAKE_UCAST;
        if (adapter->wol & E1000_WUFC_MC)
                wol->wolopts |= WAKE_MCAST;
        if (adapter->wol & E1000_WUFC_BC)
                wol->wolopts |= WAKE_BCAST;
        if (adapter->wol & E1000_WUFC_MAG)
                wol->wolopts |= WAKE_MAGIC;
        if (adapter->wol & E1000_WUFC_LNKC)
                wol->wolopts |= WAKE_PHY;
}

static int igb_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
        struct igb_adapter *adapter = netdev_priv(netdev);

        if (wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE))
                return -EOPNOTSUPP;

        if (!(adapter->flags & IGB_FLAG_WOL_SUPPORTED))
                return wol->wolopts ? -EOPNOTSUPP : 0;

        /* these settings will always override what we currently have */
        adapter->wol = 0;

        if (wol->wolopts & WAKE_UCAST)
                adapter->wol |= E1000_WUFC_EX;
        if (wol->wolopts & WAKE_MCAST)
                adapter->wol |= E1000_WUFC_MC;
        if (wol->wolopts & WAKE_BCAST)
                adapter->wol |= E1000_WUFC_BC;
        if (wol->wolopts & WAKE_MAGIC)
                adapter->wol |= E1000_WUFC_MAG;
        if (wol->wolopts & WAKE_PHY)
                adapter->wol |= E1000_WUFC_LNKC;
        device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);

        return 0;
}

/* bit defines for adapter->led_status */
#define IGB_LED_ON              0

static int igb_set_phys_id(struct net_device *netdev,
                           enum ethtool_phys_id_state state)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_hw *hw = &adapter->hw;

        switch (state) {
        case ETHTOOL_ID_ACTIVE:
                igb_blink_led(hw);
                return 2;
        case ETHTOOL_ID_ON:
                igb_blink_led(hw);
                break;
        case ETHTOOL_ID_OFF:
                igb_led_off(hw);
                break;
        case ETHTOOL_ID_INACTIVE:
                igb_led_off(hw);
                clear_bit(IGB_LED_ON, &adapter->led_status);
                igb_cleanup_led(hw);
                break;
        }

        return 0;
}

static int igb_set_coalesce(struct net_device *netdev,
                            struct ethtool_coalesce *ec)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        int i;

        if (ec->rx_max_coalesced_frames ||
            ec->rx_coalesce_usecs_irq ||
            ec->rx_max_coalesced_frames_irq ||
            ec->tx_max_coalesced_frames ||
            ec->tx_coalesce_usecs_irq ||
            ec->stats_block_coalesce_usecs ||
            ec->use_adaptive_rx_coalesce ||
            ec->use_adaptive_tx_coalesce ||
            ec->pkt_rate_low ||
            ec->rx_coalesce_usecs_low ||
            ec->rx_max_coalesced_frames_low ||
            ec->tx_coalesce_usecs_low ||
            ec->tx_max_coalesced_frames_low ||
            ec->pkt_rate_high ||
            ec->rx_coalesce_usecs_high ||
            ec->rx_max_coalesced_frames_high ||
            ec->tx_coalesce_usecs_high ||
            ec->tx_max_coalesced_frames_high ||
            ec->rate_sample_interval)
                return -ENOTSUPP;

        if ((ec->rx_coalesce_usecs > IGB_MAX_ITR_USECS) ||
            ((ec->rx_coalesce_usecs > 3) &&
             (ec->rx_coalesce_usecs < IGB_MIN_ITR_USECS)) ||
            (ec->rx_coalesce_usecs == 2))
                return -EINVAL;

        if ((ec->tx_coalesce_usecs > IGB_MAX_ITR_USECS) ||
            ((ec->tx_coalesce_usecs > 3) &&
             (ec->tx_coalesce_usecs < IGB_MIN_ITR_USECS)) ||
            (ec->tx_coalesce_usecs == 2))
                return -EINVAL;

        if ((adapter->flags & IGB_FLAG_QUEUE_PAIRS) && ec->tx_coalesce_usecs)
                return -EINVAL;

        /* If ITR is disabled, disable DMAC */
        if (ec->rx_coalesce_usecs == 0) {
                if (adapter->flags & IGB_FLAG_DMAC)
                        adapter->flags &= ~IGB_FLAG_DMAC;
        }

        /* convert to rate of irq's per second */
        if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3)
                adapter->rx_itr_setting = ec->rx_coalesce_usecs;
        else
                adapter->rx_itr_setting = ec->rx_coalesce_usecs << 2;

        /* convert to rate of irq's per second */
        if (adapter->flags & IGB_FLAG_QUEUE_PAIRS)
                adapter->tx_itr_setting = adapter->rx_itr_setting;
        else if (ec->tx_coalesce_usecs && ec->tx_coalesce_usecs <= 3)
                adapter->tx_itr_setting = ec->tx_coalesce_usecs;
        else
                adapter->tx_itr_setting = ec->tx_coalesce_usecs << 2;

        for (i = 0; i < adapter->num_q_vectors; i++) {
                struct igb_q_vector *q_vector = adapter->q_vector[i];
                q_vector->tx.work_limit = adapter->tx_work_limit;
                if (q_vector->rx.ring)
                        q_vector->itr_val = adapter->rx_itr_setting;
                else
                        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;
                q_vector->set_itr = 1;
        }

        return 0;
}

static int igb_get_coalesce(struct net_device *netdev,
                            struct ethtool_coalesce *ec)
{
        struct igb_adapter *adapter = netdev_priv(netdev);

        if (adapter->rx_itr_setting <= 3)
                ec->rx_coalesce_usecs = adapter->rx_itr_setting;
        else
                ec->rx_coalesce_usecs = adapter->rx_itr_setting >> 2;

        if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS)) {
                if (adapter->tx_itr_setting <= 3)
                        ec->tx_coalesce_usecs = adapter->tx_itr_setting;
                else
                        ec->tx_coalesce_usecs = adapter->tx_itr_setting >> 2;
        }

        return 0;
}

static int igb_nway_reset(struct net_device *netdev)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        if (netif_running(netdev))
                igb_reinit_locked(adapter);
        return 0;
}

static int igb_get_sset_count(struct net_device *netdev, int sset)
{
        switch (sset) {
        case ETH_SS_STATS:
                return IGB_STATS_LEN;
        case ETH_SS_TEST:
                return IGB_TEST_LEN;
        case ETH_SS_PRIV_FLAGS:
                return IGB_PRIV_FLAGS_STR_LEN;
        default:
                return -ENOTSUPP;
        }
}

static void igb_get_ethtool_stats(struct net_device *netdev,
                                  struct ethtool_stats *stats, u64 *data)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct rtnl_link_stats64 *net_stats = &adapter->stats64;
        unsigned int start;
        struct igb_ring *ring;
        int i, j;
        char *p;

        spin_lock(&adapter->stats64_lock);
        igb_update_stats(adapter);

        for (i = 0; i < IGB_GLOBAL_STATS_LEN; i++) {
                p = (char *)adapter + igb_gstrings_stats[i].stat_offset;
                data[i] = (igb_gstrings_stats[i].sizeof_stat ==
                        sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
        }
        for (j = 0; j < IGB_NETDEV_STATS_LEN; j++, i++) {
                p = (char *)net_stats + igb_gstrings_net_stats[j].stat_offset;
                data[i] = (igb_gstrings_net_stats[j].sizeof_stat ==
                        sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
        }
        for (j = 0; j < adapter->num_tx_queues; j++) {
                u64     restart2;

                ring = adapter->tx_ring[j];
                do {
                        start = u64_stats_fetch_begin_irq(&ring->tx_syncp);
                        data[i]   = ring->tx_stats.packets;
                        data[i+1] = ring->tx_stats.bytes;
                        data[i+2] = ring->tx_stats.restart_queue;
                } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start));
                do {
                        start = u64_stats_fetch_begin_irq(&ring->tx_syncp2);
                        restart2  = ring->tx_stats.restart_queue2;
                } while (u64_stats_fetch_retry_irq(&ring->tx_syncp2, start));
                data[i+2] += restart2;

                i += IGB_TX_QUEUE_STATS_LEN;
        }
        for (j = 0; j < adapter->num_rx_queues; j++) {
                ring = adapter->rx_ring[j];
                do {
                        start = u64_stats_fetch_begin_irq(&ring->rx_syncp);
                        data[i]   = ring->rx_stats.packets;
                        data[i+1] = ring->rx_stats.bytes;
                        data[i+2] = ring->rx_stats.drops;
                        data[i+3] = ring->rx_stats.csum_err;
                        data[i+4] = ring->rx_stats.alloc_failed;
                } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start));
                i += IGB_RX_QUEUE_STATS_LEN;
        }
        spin_unlock(&adapter->stats64_lock);
}

static void igb_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        u8 *p = data;
        int i;

        switch (stringset) {
        case ETH_SS_TEST:
                memcpy(data, *igb_gstrings_test,
                        IGB_TEST_LEN*ETH_GSTRING_LEN);
                break;
        case ETH_SS_STATS:
                for (i = 0; i < IGB_GLOBAL_STATS_LEN; i++) {
                        memcpy(p, igb_gstrings_stats[i].stat_string,
                               ETH_GSTRING_LEN);
                        p += ETH_GSTRING_LEN;
                }
                for (i = 0; i < IGB_NETDEV_STATS_LEN; i++) {
                        memcpy(p, igb_gstrings_net_stats[i].stat_string,
                               ETH_GSTRING_LEN);
                        p += ETH_GSTRING_LEN;
                }
                for (i = 0; i < adapter->num_tx_queues; i++) {
                        sprintf(p, "tx_queue_%u_packets", i);
                        p += ETH_GSTRING_LEN;
                        sprintf(p, "tx_queue_%u_bytes", i);
                        p += ETH_GSTRING_LEN;
                        sprintf(p, "tx_queue_%u_restart", i);
                        p += ETH_GSTRING_LEN;
                }
                for (i = 0; i < adapter->num_rx_queues; i++) {
                        sprintf(p, "rx_queue_%u_packets", i);
                        p += ETH_GSTRING_LEN;
                        sprintf(p, "rx_queue_%u_bytes", i);
                        p += ETH_GSTRING_LEN;
                        sprintf(p, "rx_queue_%u_drops", i);
                        p += ETH_GSTRING_LEN;
                        sprintf(p, "rx_queue_%u_csum_err", i);
                        p += ETH_GSTRING_LEN;
                        sprintf(p, "rx_queue_%u_alloc_failed", i);
                        p += ETH_GSTRING_LEN;
                }
                /* BUG_ON(p - data != IGB_STATS_LEN * ETH_GSTRING_LEN); */
                break;
        case ETH_SS_PRIV_FLAGS:
                memcpy(data, igb_priv_flags_strings,
                       IGB_PRIV_FLAGS_STR_LEN * ETH_GSTRING_LEN);
                break;
        }
}

static int igb_get_ts_info(struct net_device *dev,
                           struct ethtool_ts_info *info)
{
        struct igb_adapter *adapter = netdev_priv(dev);

        if (adapter->ptp_clock)
                info->phc_index = ptp_clock_index(adapter->ptp_clock);
        else
                info->phc_index = -1;

        switch (adapter->hw.mac.type) {
        case e1000_82575:
                info->so_timestamping =
                        SOF_TIMESTAMPING_TX_SOFTWARE |
                        SOF_TIMESTAMPING_RX_SOFTWARE |
                        SOF_TIMESTAMPING_SOFTWARE;
                return 0;
        case e1000_82576:
        case e1000_82580:
        case e1000_i350:
        case e1000_i354:
        case e1000_i210:
        case e1000_i211:
                info->so_timestamping =
                        SOF_TIMESTAMPING_TX_SOFTWARE |
                        SOF_TIMESTAMPING_RX_SOFTWARE |
                        SOF_TIMESTAMPING_SOFTWARE |
                        SOF_TIMESTAMPING_TX_HARDWARE |
                        SOF_TIMESTAMPING_RX_HARDWARE |
                        SOF_TIMESTAMPING_RAW_HARDWARE;

                info->tx_types =
                        BIT(HWTSTAMP_TX_OFF) |
                        BIT(HWTSTAMP_TX_ON);

                info->rx_filters = BIT(HWTSTAMP_FILTER_NONE);

                /* 82576 does not support timestamping all packets. */
                if (adapter->hw.mac.type >= e1000_82580)
                        info->rx_filters |= BIT(HWTSTAMP_FILTER_ALL);
                else
                        info->rx_filters |=
                                BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
                                BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
                                BIT(HWTSTAMP_FILTER_PTP_V2_EVENT);

                return 0;
        default:
                return -EOPNOTSUPP;
        }
}

#define ETHER_TYPE_FULL_MASK ((__force __be16)~0)
static int igb_get_ethtool_nfc_entry(struct igb_adapter *adapter,
                                     struct ethtool_rxnfc *cmd)
{
        struct ethtool_rx_flow_spec *fsp = &cmd->fs;
        struct igb_nfc_filter *rule = NULL;

        /* report total rule count */
        cmd->data = IGB_MAX_RXNFC_FILTERS;

        hlist_for_each_entry(rule, &adapter->nfc_filter_list, nfc_node) {
                if (fsp->location <= rule->sw_idx)
                        break;
        }

        if (!rule || fsp->location != rule->sw_idx)
                return -EINVAL;

        if (rule->filter.match_flags) {
                fsp->flow_type = ETHER_FLOW;
                fsp->ring_cookie = rule->action;
                if (rule->filter.match_flags & IGB_FILTER_FLAG_ETHER_TYPE) {
                        fsp->h_u.ether_spec.h_proto = rule->filter.etype;
                        fsp->m_u.ether_spec.h_proto = ETHER_TYPE_FULL_MASK;
                }
                if (rule->filter.match_flags & IGB_FILTER_FLAG_VLAN_TCI) {
                        fsp->flow_type |= FLOW_EXT;
                        fsp->h_ext.vlan_tci = rule->filter.vlan_tci;
                        fsp->m_ext.vlan_tci = htons(VLAN_PRIO_MASK);
                }
                return 0;
        }
        return -EINVAL;
}

static int igb_get_ethtool_nfc_all(struct igb_adapter *adapter,
                                   struct ethtool_rxnfc *cmd,
                                   u32 *rule_locs)
{
        struct igb_nfc_filter *rule;
        int cnt = 0;

        /* report total rule count */
        cmd->data = IGB_MAX_RXNFC_FILTERS;

        hlist_for_each_entry(rule, &adapter->nfc_filter_list, nfc_node) {
                if (cnt == cmd->rule_cnt)
                        return -EMSGSIZE;
                rule_locs[cnt] = rule->sw_idx;
                cnt++;
        }

        cmd->rule_cnt = cnt;

        return 0;
}

static int igb_get_rss_hash_opts(struct igb_adapter *adapter,
                                 struct ethtool_rxnfc *cmd)
{
        cmd->data = 0;

        /* Report default options for RSS on igb */
        switch (cmd->flow_type) {
        case TCP_V4_FLOW:
                cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
                /* Fall through */
        case UDP_V4_FLOW:
                if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP)
                        cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
                /* Fall through */
        case SCTP_V4_FLOW:
        case AH_ESP_V4_FLOW:
        case AH_V4_FLOW:
        case ESP_V4_FLOW:
        case IPV4_FLOW:
                cmd->data |= RXH_IP_SRC | RXH_IP_DST;
                break;
        case TCP_V6_FLOW:
                cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
                /* Fall through */
        case UDP_V6_FLOW:
                if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP)
                        cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
                /* Fall through */
        case SCTP_V6_FLOW:
        case AH_ESP_V6_FLOW:
        case AH_V6_FLOW:
        case ESP_V6_FLOW:
        case IPV6_FLOW:
                cmd->data |= RXH_IP_SRC | RXH_IP_DST;
                break;
        default:
                return -EINVAL;
        }

        return 0;
}

static int igb_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
                         u32 *rule_locs)
{
        struct igb_adapter *adapter = netdev_priv(dev);
        int ret = -EOPNOTSUPP;

        switch (cmd->cmd) {
        case ETHTOOL_GRXRINGS:
                cmd->data = adapter->num_rx_queues;
                ret = 0;
                break;
        case ETHTOOL_GRXCLSRLCNT:
                cmd->rule_cnt = adapter->nfc_filter_count;
                ret = 0;
                break;
        case ETHTOOL_GRXCLSRULE:
                ret = igb_get_ethtool_nfc_entry(adapter, cmd);
                break;
        case ETHTOOL_GRXCLSRLALL:
                ret = igb_get_ethtool_nfc_all(adapter, cmd, rule_locs);
                break;
        case ETHTOOL_GRXFH:
                ret = igb_get_rss_hash_opts(adapter, cmd);
                break;
        default:
                break;
        }

        return ret;
}

#define UDP_RSS_FLAGS (IGB_FLAG_RSS_FIELD_IPV4_UDP | \
                       IGB_FLAG_RSS_FIELD_IPV6_UDP)
static int igb_set_rss_hash_opt(struct igb_adapter *adapter,
                                struct ethtool_rxnfc *nfc)
{
        u32 flags = adapter->flags;

        /* RSS does not support anything other than hashing
         * to queues on src and dst IPs and ports
         */
        if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
                          RXH_L4_B_0_1 | RXH_L4_B_2_3))
                return -EINVAL;

        switch (nfc->flow_type) {
        case TCP_V4_FLOW:
        case TCP_V6_FLOW:
                if (!(nfc->data & RXH_IP_SRC) ||
                    !(nfc->data & RXH_IP_DST) ||
                    !(nfc->data & RXH_L4_B_0_1) ||
                    !(nfc->data & RXH_L4_B_2_3))
                        return -EINVAL;
                break;
        case UDP_V4_FLOW:
                if (!(nfc->data & RXH_IP_SRC) ||
                    !(nfc->data & RXH_IP_DST))
                        return -EINVAL;
                switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
                case 0:
                        flags &= ~IGB_FLAG_RSS_FIELD_IPV4_UDP;
                        break;
                case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
                        flags |= IGB_FLAG_RSS_FIELD_IPV4_UDP;
                        break;
                default:
                        return -EINVAL;
                }
                break;
        case UDP_V6_FLOW:
                if (!(nfc->data & RXH_IP_SRC) ||
                    !(nfc->data & RXH_IP_DST))
                        return -EINVAL;
                switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
                case 0:
                        flags &= ~IGB_FLAG_RSS_FIELD_IPV6_UDP;
                        break;
                case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
                        flags |= IGB_FLAG_RSS_FIELD_IPV6_UDP;
                        break;
                default:
                        return -EINVAL;
                }
                break;
        case AH_ESP_V4_FLOW:
        case AH_V4_FLOW:
        case ESP_V4_FLOW:
        case SCTP_V4_FLOW:
        case AH_ESP_V6_FLOW:
        case AH_V6_FLOW:
        case ESP_V6_FLOW:
        case SCTP_V6_FLOW:
                if (!(nfc->data & RXH_IP_SRC) ||
                    !(nfc->data & RXH_IP_DST) ||
                    (nfc->data & RXH_L4_B_0_1) ||
                    (nfc->data & RXH_L4_B_2_3))
                        return -EINVAL;
                break;
        default:
                return -EINVAL;
        }

        /* if we changed something we need to update flags */
        if (flags != adapter->flags) {
                struct e1000_hw *hw = &adapter->hw;
                u32 mrqc = rd32(E1000_MRQC);

                if ((flags & UDP_RSS_FLAGS) &&
                    !(adapter->flags & UDP_RSS_FLAGS))
                        dev_err(&adapter->pdev->dev,
                                "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n");

                adapter->flags = flags;

                /* Perform hash on these packet types */
                mrqc |= E1000_MRQC_RSS_FIELD_IPV4 |
                        E1000_MRQC_RSS_FIELD_IPV4_TCP |
                        E1000_MRQC_RSS_FIELD_IPV6 |
                        E1000_MRQC_RSS_FIELD_IPV6_TCP;

                mrqc &= ~(E1000_MRQC_RSS_FIELD_IPV4_UDP |
                          E1000_MRQC_RSS_FIELD_IPV6_UDP);

                if (flags & IGB_FLAG_RSS_FIELD_IPV4_UDP)
                        mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP;

                if (flags & IGB_FLAG_RSS_FIELD_IPV6_UDP)
                        mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP;

                wr32(E1000_MRQC, mrqc);
        }

        return 0;
}

static int igb_rxnfc_write_etype_filter(struct igb_adapter *adapter,
                                        struct igb_nfc_filter *input)
{
        struct e1000_hw *hw = &adapter->hw;
        u8 i;
        u32 etqf;
        u16 etype;

        /* find an empty etype filter register */
        for (i = 0; i < MAX_ETYPE_FILTER; ++i) {
                if (!adapter->etype_bitmap[i])
                        break;
        }
        if (i == MAX_ETYPE_FILTER) {
                dev_err(&adapter->pdev->dev, "ethtool -N: etype filters are all used.\n");
                return -EINVAL;
        }

        adapter->etype_bitmap[i] = true;

        etqf = rd32(E1000_ETQF(i));
        etype = ntohs(input->filter.etype & ETHER_TYPE_FULL_MASK);

        etqf |= E1000_ETQF_FILTER_ENABLE;
        etqf &= ~E1000_ETQF_ETYPE_MASK;
        etqf |= (etype & E1000_ETQF_ETYPE_MASK);

        etqf &= ~E1000_ETQF_QUEUE_MASK;
        etqf |= ((input->action << E1000_ETQF_QUEUE_SHIFT)
                & E1000_ETQF_QUEUE_MASK);
        etqf |= E1000_ETQF_QUEUE_ENABLE;

        wr32(E1000_ETQF(i), etqf);

        input->etype_reg_index = i;

        return 0;
}

static int igb_rxnfc_write_vlan_prio_filter(struct igb_adapter *adapter,
                                            struct igb_nfc_filter *input)
{
        struct e1000_hw *hw = &adapter->hw;
        u8 vlan_priority;
        u16 queue_index;
        u32 vlapqf;

        vlapqf = rd32(E1000_VLAPQF);
        vlan_priority = (ntohs(input->filter.vlan_tci) & VLAN_PRIO_MASK)
                                >> VLAN_PRIO_SHIFT;
        queue_index = (vlapqf >> (vlan_priority * 4)) & E1000_VLAPQF_QUEUE_MASK;

        /* check whether this vlan prio is already set */
        if ((vlapqf & E1000_VLAPQF_P_VALID(vlan_priority)) &&
            (queue_index != input->action)) {
                dev_err(&adapter->pdev->dev, "ethtool rxnfc set vlan prio filter failed.\n");
                return -EEXIST;
        }

        vlapqf |= E1000_VLAPQF_P_VALID(vlan_priority);
        vlapqf |= E1000_VLAPQF_QUEUE_SEL(vlan_priority, input->action);

        wr32(E1000_VLAPQF, vlapqf);

        return 0;
}

int igb_add_filter(struct igb_adapter *adapter, struct igb_nfc_filter *input)
{
        int err = -EINVAL;

        if (input->filter.match_flags & IGB_FILTER_FLAG_ETHER_TYPE) {
                err = igb_rxnfc_write_etype_filter(adapter, input);
                if (err)
                        return err;
        }

        if (input->filter.match_flags & IGB_FILTER_FLAG_VLAN_TCI)
                err = igb_rxnfc_write_vlan_prio_filter(adapter, input);

        return err;
}

static void igb_clear_etype_filter_regs(struct igb_adapter *adapter,
                                        u16 reg_index)
{
        struct e1000_hw *hw = &adapter->hw;
        u32 etqf = rd32(E1000_ETQF(reg_index));

        etqf &= ~E1000_ETQF_QUEUE_ENABLE;
        etqf &= ~E1000_ETQF_QUEUE_MASK;
        etqf &= ~E1000_ETQF_FILTER_ENABLE;

        wr32(E1000_ETQF(reg_index), etqf);

        adapter->etype_bitmap[reg_index] = false;
}

static void igb_clear_vlan_prio_filter(struct igb_adapter *adapter,
                                       u16 vlan_tci)
{
        struct e1000_hw *hw = &adapter->hw;
        u8 vlan_priority;
        u32 vlapqf;

        vlan_priority = (vlan_tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;

        vlapqf = rd32(E1000_VLAPQF);
        vlapqf &= ~E1000_VLAPQF_P_VALID(vlan_priority);
        vlapqf &= ~E1000_VLAPQF_QUEUE_SEL(vlan_priority,
                                                E1000_VLAPQF_QUEUE_MASK);

        wr32(E1000_VLAPQF, vlapqf);
}

int igb_erase_filter(struct igb_adapter *adapter, struct igb_nfc_filter *input)
{
        if (input->filter.match_flags & IGB_FILTER_FLAG_ETHER_TYPE)
                igb_clear_etype_filter_regs(adapter,
                                            input->etype_reg_index);

        if (input->filter.match_flags & IGB_FILTER_FLAG_VLAN_TCI)
                igb_clear_vlan_prio_filter(adapter,
                                           ntohs(input->filter.vlan_tci));

        return 0;
}

static int igb_update_ethtool_nfc_entry(struct igb_adapter *adapter,
                                        struct igb_nfc_filter *input,
                                        u16 sw_idx)
{
        struct igb_nfc_filter *rule, *parent;
        int err = -EINVAL;

        parent = NULL;
        rule = NULL;

        hlist_for_each_entry(rule, &adapter->nfc_filter_list, nfc_node) {
                /* hash found, or no matching entry */
                if (rule->sw_idx >= sw_idx)
                        break;
                parent = rule;
        }

        /* if there is an old rule occupying our place remove it */
        if (rule && (rule->sw_idx == sw_idx)) {
                if (!input)
                        err = igb_erase_filter(adapter, rule);

                hlist_del(&rule->nfc_node);
                kfree(rule);
                adapter->nfc_filter_count--;
        }

        /* If no input this was a delete, err should be 0 if a rule was
         * successfully found and removed from the list else -EINVAL
         */
        if (!input)
                return err;

        /* initialize node */
        INIT_HLIST_NODE(&input->nfc_node);

        /* add filter to the list */
        if (parent)
                hlist_add_behind(&parent->nfc_node, &input->nfc_node);
        else
                hlist_add_head(&input->nfc_node, &adapter->nfc_filter_list);

        /* update counts */
        adapter->nfc_filter_count++;

        return 0;
}

static int igb_add_ethtool_nfc_entry(struct igb_adapter *adapter,
                                     struct ethtool_rxnfc *cmd)
{
        struct net_device *netdev = adapter->netdev;
        struct ethtool_rx_flow_spec *fsp =
                (struct ethtool_rx_flow_spec *)&cmd->fs;
        struct igb_nfc_filter *input, *rule;
        int err = 0;

        if (!(netdev->hw_features & NETIF_F_NTUPLE))
                return -EOPNOTSUPP;

        /* Don't allow programming if the action is a queue greater than
         * the number of online Rx queues.
         */
        if ((fsp->ring_cookie == RX_CLS_FLOW_DISC) ||
            (fsp->ring_cookie >= adapter->num_rx_queues)) {
                dev_err(&adapter->pdev->dev, "ethtool -N: The specified action is invalid\n");
                return -EINVAL;
        }

        /* Don't allow indexes to exist outside of available space */
        if (fsp->location >= IGB_MAX_RXNFC_FILTERS) {
                dev_err(&adapter->pdev->dev, "Location out of range\n");
                return -EINVAL;
        }

        if ((fsp->flow_type & ~FLOW_EXT) != ETHER_FLOW)
                return -EINVAL;

        if (fsp->m_u.ether_spec.h_proto != ETHER_TYPE_FULL_MASK &&
            fsp->m_ext.vlan_tci != htons(VLAN_PRIO_MASK))
                return -EINVAL;

        input = kzalloc(sizeof(*input), GFP_KERNEL);
        if (!input)
                return -ENOMEM;

        if (fsp->m_u.ether_spec.h_proto == ETHER_TYPE_FULL_MASK) {
                input->filter.etype = fsp->h_u.ether_spec.h_proto;
                input->filter.match_flags = IGB_FILTER_FLAG_ETHER_TYPE;
        }

        if ((fsp->flow_type & FLOW_EXT) && fsp->m_ext.vlan_tci) {
                if (fsp->m_ext.vlan_tci != htons(VLAN_PRIO_MASK)) {
                        err = -EINVAL;
                        goto err_out;
                }
                input->filter.vlan_tci = fsp->h_ext.vlan_tci;
                input->filter.match_flags |= IGB_FILTER_FLAG_VLAN_TCI;
        }

        input->action = fsp->ring_cookie;
        input->sw_idx = fsp->location;

        spin_lock(&adapter->nfc_lock);

        hlist_for_each_entry(rule, &adapter->nfc_filter_list, nfc_node) {
                if (!memcmp(&input->filter, &rule->filter,
                            sizeof(input->filter))) {
                        err = -EEXIST;
                        dev_err(&adapter->pdev->dev,
                                "ethtool: this filter is already set\n");
                        goto err_out_w_lock;
                }
        }

        err = igb_add_filter(adapter, input);
        if (err)
                goto err_out_w_lock;

        igb_update_ethtool_nfc_entry(adapter, input, input->sw_idx);

        spin_unlock(&adapter->nfc_lock);
        return 0;

err_out_w_lock:
        spin_unlock(&adapter->nfc_lock);
err_out:
        kfree(input);
        return err;
}

static int igb_del_ethtool_nfc_entry(struct igb_adapter *adapter,
                                     struct ethtool_rxnfc *cmd)
{
        struct ethtool_rx_flow_spec *fsp =
                (struct ethtool_rx_flow_spec *)&cmd->fs;
        int err;

        spin_lock(&adapter->nfc_lock);
        err = igb_update_ethtool_nfc_entry(adapter, NULL, fsp->location);
        spin_unlock(&adapter->nfc_lock);

        return err;
}

static int igb_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
{
        struct igb_adapter *adapter = netdev_priv(dev);
        int ret = -EOPNOTSUPP;

        switch (cmd->cmd) {
        case ETHTOOL_SRXFH:
                ret = igb_set_rss_hash_opt(adapter, cmd);
                break;
        case ETHTOOL_SRXCLSRLINS:
                ret = igb_add_ethtool_nfc_entry(adapter, cmd);
                break;
        case ETHTOOL_SRXCLSRLDEL:
                ret = igb_del_ethtool_nfc_entry(adapter, cmd);
        default:
                break;
        }

        return ret;
}

static int igb_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
        struct igb_adapter *adapter = netdev_priv(netdev);
        struct e1000_hw *hw = &adapter->hw;
        u32 ret_val;
        u16 phy_data;