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/*******************************************************************************

  Intel PRO/1000 Linux driver
  Copyright(c) 1999 - 2013 Intel Corporation.

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information:
  Linux NICS <linux.nics@intel.com>
  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

*******************************************************************************/

/* ethtool support for e1000 */

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

#include "e1000.h"

enum {NETDEV_STATS, E1000_STATS};

struct e1000_stats {
	char stat_string[ETH_GSTRING_LEN];
	int type;
	int sizeof_stat;
	int stat_offset;
};

#define E1000_STAT(str, m) { \
		.stat_string = str, \
		.type = E1000_STATS, \
		.sizeof_stat = sizeof(((struct e1000_adapter *)0)->m), \
		.stat_offset = offsetof(struct e1000_adapter, m) }
#define E1000_NETDEV_STAT(str, m) { \
		.stat_string = str, \
		.type = NETDEV_STATS, \
		.sizeof_stat = sizeof(((struct rtnl_link_stats64 *)0)->m), \
		.stat_offset = offsetof(struct rtnl_link_stats64, m) }

static const struct e1000_stats e1000_gstrings_stats[] = {
	E1000_STAT("rx_packets", stats.gprc),
	E1000_STAT("tx_packets", stats.gptc),
	E1000_STAT("rx_bytes", stats.gorc),
	E1000_STAT("tx_bytes", stats.gotc),
	E1000_STAT("rx_broadcast", stats.bprc),
	E1000_STAT("tx_broadcast", stats.bptc),
	E1000_STAT("rx_multicast", stats.mprc),
	E1000_STAT("tx_multicast", stats.mptc),
	E1000_NETDEV_STAT("rx_errors", rx_errors),
	E1000_NETDEV_STAT("tx_errors", tx_errors),
	E1000_NETDEV_STAT("tx_dropped", tx_dropped),
	E1000_STAT("multicast", stats.mprc),
	E1000_STAT("collisions", stats.colc),
	E1000_NETDEV_STAT("rx_length_errors", rx_length_errors),
	E1000_NETDEV_STAT("rx_over_errors", rx_over_errors),
	E1000_STAT("rx_crc_errors", stats.crcerrs),
	E1000_NETDEV_STAT("rx_frame_errors", rx_frame_errors),
	E1000_STAT("rx_no_buffer_count", stats.rnbc),
	E1000_STAT("rx_missed_errors", stats.mpc),
	E1000_STAT("tx_aborted_errors", stats.ecol),
	E1000_STAT("tx_carrier_errors", stats.tncrs),
	E1000_NETDEV_STAT("tx_fifo_errors", tx_fifo_errors),
	E1000_NETDEV_STAT("tx_heartbeat_errors", tx_heartbeat_errors),
	E1000_STAT("tx_window_errors", stats.latecol),
	E1000_STAT("tx_abort_late_coll", stats.latecol),
	E1000_STAT("tx_deferred_ok", stats.dc),
	E1000_STAT("tx_single_coll_ok", stats.scc),
	E1000_STAT("tx_multi_coll_ok", stats.mcc),
	E1000_STAT("tx_timeout_count", tx_timeout_count),
	E1000_STAT("tx_restart_queue", restart_queue),
	E1000_STAT("rx_long_length_errors", stats.roc),
	E1000_STAT("rx_short_length_errors", stats.ruc),
	E1000_STAT("rx_align_errors", stats.algnerrc),
	E1000_STAT("tx_tcp_seg_good", stats.tsctc),
	E1000_STAT("tx_tcp_seg_failed", stats.tsctfc),
	E1000_STAT("rx_flow_control_xon", stats.xonrxc),
	E1000_STAT("rx_flow_control_xoff", stats.xoffrxc),
	E1000_STAT("tx_flow_control_xon", stats.xontxc),
	E1000_STAT("tx_flow_control_xoff", stats.xofftxc),
	E1000_STAT("rx_csum_offload_good", hw_csum_good),
	E1000_STAT("rx_csum_offload_errors", hw_csum_err),
	E1000_STAT("rx_header_split", rx_hdr_split),
	E1000_STAT("alloc_rx_buff_failed", alloc_rx_buff_failed),
	E1000_STAT("tx_smbus", stats.mgptc),
	E1000_STAT("rx_smbus", stats.mgprc),
	E1000_STAT("dropped_smbus", stats.mgpdc),
	E1000_STAT("rx_dma_failed", rx_dma_failed),
	E1000_STAT("tx_dma_failed", tx_dma_failed),
	E1000_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
	E1000_STAT("uncorr_ecc_errors", uncorr_errors),
	E1000_STAT("corr_ecc_errors", corr_errors),
};

#define E1000_GLOBAL_STATS_LEN	ARRAY_SIZE(e1000_gstrings_stats)
#define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN)
static const char e1000_gstrings_test[][ETH_GSTRING_LEN] = {
	"Register test  (offline)", "Eeprom test    (offline)",
	"Interrupt test (offline)", "Loopback test  (offline)",
	"Link test   (on/offline)"
};
#define E1000_TEST_LEN ARRAY_SIZE(e1000_gstrings_test)

static int e1000_get_settings(struct net_device *netdev,
			      struct ethtool_cmd *ecmd)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;
	u32 speed;

	if (hw->phy.media_type == e1000_media_type_copper) {
		ecmd->supported = (SUPPORTED_10baseT_Half |
				   SUPPORTED_10baseT_Full |
				   SUPPORTED_100baseT_Half |
				   SUPPORTED_100baseT_Full |
				   SUPPORTED_1000baseT_Full |
				   SUPPORTED_Autoneg |
				   SUPPORTED_TP);
		if (hw->phy.type == e1000_phy_ife)
			ecmd->supported &= ~SUPPORTED_1000baseT_Full;
		ecmd->advertising = ADVERTISED_TP;

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

		ecmd->port = PORT_TP;
		ecmd->phy_address = hw->phy.addr;
		ecmd->transceiver = XCVR_INTERNAL;

	} else {
		ecmd->supported   = (SUPPORTED_1000baseT_Full |
				     SUPPORTED_FIBRE |
				     SUPPORTED_Autoneg);

		ecmd->advertising = (ADVERTISED_1000baseT_Full |
				     ADVERTISED_FIBRE |
				     ADVERTISED_Autoneg);

		ecmd->port = PORT_FIBRE;
		ecmd->transceiver = XCVR_EXTERNAL;
	}

	speed = -1;
	ecmd->duplex = -1;

	if (netif_running(netdev)) {
		if (netif_carrier_ok(netdev)) {
			speed = adapter->link_speed;
			ecmd->duplex = adapter->link_duplex - 1;
		}
	} else {
		u32 status = er32(STATUS);
		if (status & E1000_STATUS_LU) {
			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)
				ecmd->duplex = DUPLEX_FULL;
			else
				ecmd->duplex = DUPLEX_HALF;
		}
	}

	ethtool_cmd_speed_set(ecmd, speed);
	ecmd->autoneg = ((hw->phy.media_type == e1000_media_type_fiber) ||
			 hw->mac.autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;

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

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

	return 0;
}

static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx)
{
	struct e1000_mac_info *mac = &adapter->hw.mac;

	mac->autoneg = 0;

	/* Make sure dplx is at most 1 bit and lsb of speed is not set
	 * for the switch() below to work
	 */
	if ((spd & 1) || (dplx & ~1))
		goto err_inval;

	/* Fiber NICs only allow 1000 gbps Full duplex */
	if ((adapter->hw.phy.media_type == e1000_media_type_fiber) &&
	    spd != SPEED_1000 &&
	    dplx != DUPLEX_FULL) {
		goto err_inval;
	}

	switch (spd + dplx) {
	case SPEED_10 + DUPLEX_HALF:
		mac->forced_speed_duplex = ADVERTISE_10_HALF;
		break;
	case SPEED_10 + DUPLEX_FULL:
		mac->forced_speed_duplex = ADVERTISE_10_FULL;
		break;
	case SPEED_100 + DUPLEX_HALF:
		mac->forced_speed_duplex = ADVERTISE_100_HALF;
		break;
	case SPEED_100 + DUPLEX_FULL:
		mac->forced_speed_duplex = ADVERTISE_100_FULL;
		break;
	case SPEED_1000 + DUPLEX_FULL:
		mac->autoneg = 1;
		adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
		break;
	case SPEED_1000 + DUPLEX_HALF: /* not supported */
	default:
		goto err_inval;
	}

	/* clear MDI, MDI(-X) override is only allowed when autoneg enabled */
	adapter->hw.phy.mdix = AUTO_ALL_MODES;

	return 0;

err_inval:
	e_err("Unsupported Speed/Duplex configuration\n");
	return -EINVAL;
}

static int e1000_set_settings(struct net_device *netdev,
			      struct ethtool_cmd *ecmd)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;

	/* When SoL/IDER sessions are active, autoneg/speed/duplex
	 * cannot be changed
	 */
	if (hw->phy.ops.check_reset_block &&
	    hw->phy.ops.check_reset_block(hw)) {
		e_err("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 (ecmd->eth_tp_mdix_ctrl) {
		if (hw->phy.media_type != e1000_media_type_copper)
			return -EOPNOTSUPP;

		if ((ecmd->eth_tp_mdix_ctrl != ETH_TP_MDI_AUTO) &&
		    (ecmd->autoneg != AUTONEG_ENABLE)) {
			e_err("forcing MDI/MDI-X state is not supported when link speed and/or duplex are forced\n");
			return -EINVAL;
		}
	}

	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
		usleep_range(1000, 2000);

	if (ecmd->autoneg == AUTONEG_ENABLE) {
		hw->mac.autoneg = 1;
		if (hw->phy.media_type == e1000_media_type_fiber)
			hw->phy.autoneg_advertised = ADVERTISED_1000baseT_Full |
						     ADVERTISED_FIBRE |
						     ADVERTISED_Autoneg;
		else
			hw->phy.autoneg_advertised = ecmd->advertising |
						     ADVERTISED_TP |
						     ADVERTISED_Autoneg;
		ecmd->advertising = hw->phy.autoneg_advertised;
		if (adapter->fc_autoneg)
			hw->fc.requested_mode = e1000_fc_default;
	} else {
		u32 speed = ethtool_cmd_speed(ecmd);
		/* calling this overrides forced MDI setting */
		if (e1000_set_spd_dplx(adapter, speed, ecmd->duplex)) {
			clear_bit(__E1000_RESETTING, &adapter->state);
			return -EINVAL;
		}
	}

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

	/* reset the link */
	if (netif_running(adapter->netdev)) {
		e1000e_down(adapter);
		e1000e_up(adapter);
	} else {
		e1000e_reset(adapter);
	}

	clear_bit(__E1000_RESETTING, &adapter->state);
	return 0;
}

static void e1000_get_pauseparam(struct net_device *netdev,
				 struct ethtool_pauseparam *pause)
{
	struct e1000_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 e1000_set_pauseparam(struct net_device *netdev,
				struct ethtool_pauseparam *pause)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;
	int retval = 0;

	adapter->fc_autoneg = pause->autoneg;

	while (test_and_set_bit(__E1000_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)) {
			e1000e_down(adapter);
			e1000e_up(adapter);
		} else {
			e1000e_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;

		if (hw->phy.media_type == e1000_media_type_fiber) {
			retval = hw->mac.ops.setup_link(hw);
			/* implicit goto out */
		} else {
			retval = e1000e_force_mac_fc(hw);
			if (retval)
				goto out;
			e1000e_set_fc_watermarks(hw);
		}
	}

out:
	clear_bit(__E1000_RESETTING, &adapter->state);
	return retval;
}

static u32 e1000_get_msglevel(struct net_device *netdev)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	return adapter->msg_enable;
}

static void e1000_set_msglevel(struct net_device *netdev, u32 data)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	adapter->msg_enable = data;
}

static int e1000_get_regs_len(struct net_device __always_unused *netdev)
{
#define E1000_REGS_LEN 32 /* overestimate */
	return E1000_REGS_LEN * sizeof(u32);
}

static void e1000_get_regs(struct net_device *netdev,
			   struct ethtool_regs *regs, void *p)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;
	u32 *regs_buff = p;
	u16 phy_data;

	memset(p, 0, E1000_REGS_LEN * sizeof(u32));

	regs->version = (1 << 24) | (adapter->pdev->revision << 16) |
			adapter->pdev->device;

	regs_buff[0]  = er32(CTRL);
	regs_buff[1]  = er32(STATUS);

	regs_buff[2]  = er32(RCTL);
	regs_buff[3]  = er32(RDLEN(0));
	regs_buff[4]  = er32(RDH(0));
	regs_buff[5]  = er32(RDT(0));
	regs_buff[6]  = er32(RDTR);

	regs_buff[7]  = er32(TCTL);
	regs_buff[8]  = er32(TDLEN(0));
	regs_buff[9]  = er32(TDH(0));
	regs_buff[10] = er32(TDT(0));
	regs_buff[11] = er32(TIDV);

	regs_buff[12] = adapter->hw.phy.type;  /* PHY type (IGP=1, M88=0) */

	/* ethtool doesn't use anything past this point, so all this
	 * code is likely legacy junk for apps that may or may not exist
	 */
	if (hw->phy.type == e1000_phy_m88) {
		e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
		regs_buff[13] = (u32)phy_data; /* cable length */
		regs_buff[14] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
		regs_buff[15] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
		regs_buff[16] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
		e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
		regs_buff[17] = (u32)phy_data; /* extended 10bt distance */
		regs_buff[18] = regs_buff[13]; /* cable polarity */
		regs_buff[19] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
		regs_buff[20] = regs_buff[17]; /* polarity correction */
		/* phy receive errors */
		regs_buff[22] = adapter->phy_stats.receive_errors;
		regs_buff[23] = regs_buff[13]; /* mdix mode */
	}
	regs_buff[21] = 0;	/* was idle_errors */
	e1e_rphy(hw, MII_STAT1000, &phy_data);
	regs_buff[24] = (u32)phy_data;	/* phy local receiver status */
	regs_buff[25] = regs_buff[24];	/* phy remote receiver status */
}

static int e1000_get_eeprom_len(struct net_device *netdev)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	return adapter->hw.nvm.word_size * 2;
}

static int e1000_get_eeprom(struct net_device *netdev,
			    struct ethtool_eeprom *eeprom, u8 *bytes)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;
	u16 *eeprom_buff;
	int first_word;
	int last_word;
	int ret_val = 0;
	u16 i;

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

	eeprom->magic = adapter->pdev->vendor | (adapter->pdev->device << 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 = e1000_read_nvm(hw, first_word,
					 last_word - first_word + 1,
					 eeprom_buff);
	} else {
		for (i = 0; i < last_word - first_word + 1; i++) {
			ret_val = e1000_read_nvm(hw, first_word + i, 1,
						      &eeprom_buff[i]);
			if (ret_val)
				break;
		}
	}

	if (ret_val) {
		/* a read error occurred, throw away the result */
		memset(eeprom_buff, 0xff, sizeof(u16) *
		       (last_word - first_word + 1));
	} else {
		/* 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 e1000_set_eeprom(struct net_device *netdev,
			    struct ethtool_eeprom *eeprom, u8 *bytes)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;
	u16 *eeprom_buff;
	void *ptr;
	int max_len;
	int first_word;
	int last_word;
	int ret_val = 0;
	u16 i;

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

	if (eeprom->magic != (adapter->pdev->vendor | (adapter->pdev->device << 16)))
		return -EFAULT;

	if (adapter->flags & FLAG_READ_ONLY_NVM)
		return -EINVAL;

	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 = e1000_read_nvm(hw, first_word, 1, &eeprom_buff[0]);
		ptr++;
	}
	if (((eeprom->offset + eeprom->len) & 1) && (!ret_val))
		/* need read/modify/write of last changed EEPROM word */
		/* only the first byte of the word is being modified */
		ret_val = e1000_read_nvm(hw, last_word, 1,
				  &eeprom_buff[last_word - first_word]);

	if (ret_val)
		goto out;

	/* 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++)
		cpu_to_le16s(&eeprom_buff[i]);

	ret_val = e1000_write_nvm(hw, first_word,
				  last_word - first_word + 1, eeprom_buff);

	if (ret_val)
		goto out;

	/* Update the checksum over the first part of the EEPROM if needed
	 * and flush shadow RAM for applicable controllers
	 */
	if ((first_word <= NVM_CHECKSUM_REG) ||
	    (hw->mac.type == e1000_82583) ||
	    (hw->mac.type == e1000_82574) ||
	    (hw->mac.type == e1000_82573))
		ret_val = e1000e_update_nvm_checksum(hw);

out:
	kfree(eeprom_buff);
	return ret_val;
}

static void e1000_get_drvinfo(struct net_device *netdev,
			      struct ethtool_drvinfo *drvinfo)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);

	strlcpy(drvinfo->driver,  e1000e_driver_name,
		sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, e1000e_driver_version,
		sizeof(drvinfo->version));

	/* EEPROM image version # is reported as firmware version # for
	 * PCI-E controllers
	 */
	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
		"%d.%d-%d",
		(adapter->eeprom_vers & 0xF000) >> 12,
		(adapter->eeprom_vers & 0x0FF0) >> 4,
		(adapter->eeprom_vers & 0x000F));

	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
		sizeof(drvinfo->bus_info));
	drvinfo->regdump_len = e1000_get_regs_len(netdev);
	drvinfo->eedump_len = e1000_get_eeprom_len(netdev);
}

static void e1000_get_ringparam(struct net_device *netdev,
				struct ethtool_ringparam *ring)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);

	ring->rx_max_pending = E1000_MAX_RXD;
	ring->tx_max_pending = E1000_MAX_TXD;
	ring->rx_pending = adapter->rx_ring_count;
	ring->tx_pending = adapter->tx_ring_count;
}

static int e1000_set_ringparam(struct net_device *netdev,
			       struct ethtool_ringparam *ring)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_ring *temp_tx = NULL, *temp_rx = NULL;
	int err = 0, size = sizeof(struct e1000_ring);
	bool set_tx = false, set_rx = false;
	u16 new_rx_count, new_tx_count;

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

	new_rx_count = clamp_t(u32, ring->rx_pending, E1000_MIN_RXD,
			       E1000_MAX_RXD);
	new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);

	new_tx_count = clamp_t(u32, ring->tx_pending, E1000_MIN_TXD,
			       E1000_MAX_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(__E1000_RESETTING, &adapter->state))
		usleep_range(1000, 2000);

	if (!netif_running(adapter->netdev)) {
		/* Set counts now and allocate resources during open() */
		adapter->tx_ring->count = new_tx_count;
		adapter->rx_ring->count = new_rx_count;
		adapter->tx_ring_count = new_tx_count;
		adapter->rx_ring_count = new_rx_count;
		goto clear_reset;
	}

	set_tx = (new_tx_count != adapter->tx_ring_count);
	set_rx = (new_rx_count != adapter->rx_ring_count);

	/* Allocate temporary storage for ring updates */
	if (set_tx) {
		temp_tx = vmalloc(size);
		if (!temp_tx) {
			err = -ENOMEM;
			goto free_temp;
		}
	}
	if (set_rx) {
		temp_rx = vmalloc(size);
		if (!temp_rx) {
			err = -ENOMEM;
			goto free_temp;
		}
	}

	e1000e_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.  First, attempt to allocate new resources...
	 */
	if (set_tx) {
		memcpy(temp_tx, adapter->tx_ring, size);
		temp_tx->count = new_tx_count;
		err = e1000e_setup_tx_resources(temp_tx);
		if (err)
			goto err_setup;
	}
	if (set_rx) {
		memcpy(temp_rx, adapter->rx_ring, size);
		temp_rx->count = new_rx_count;
		err = e1000e_setup_rx_resources(temp_rx);
		if (err)
			goto err_setup_rx;
	}

	/* ...then free the old resources and copy back any new ring data */
	if (set_tx) {
		e1000e_free_tx_resources(adapter->tx_ring);
		memcpy(adapter->tx_ring, temp_tx, size);
		adapter->tx_ring_count = new_tx_count;
	}
	if (set_rx) {
		e1000e_free_rx_resources(adapter->rx_ring);
		memcpy(adapter->rx_ring, temp_rx, size);
		adapter->rx_ring_count = new_rx_count;
	}

err_setup_rx:
	if (err && set_tx)
		e1000e_free_tx_resources(temp_tx);
err_setup:
	e1000e_up(adapter);
free_temp:
	vfree(temp_tx);
	vfree(temp_rx);
clear_reset:
	clear_bit(__E1000_RESETTING, &adapter->state);
	return err;
}

static bool reg_pattern_test(struct e1000_adapter *adapter, u64 *data,
			     int reg, int offset, u32 mask, u32 write)
{
	u32 pat, val;
	static const u32 test[] = {
		0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF};
	for (pat = 0; pat < ARRAY_SIZE(test); pat++) {
		E1000_WRITE_REG_ARRAY(&adapter->hw, reg, offset,
				      (test[pat] & write));
		val = E1000_READ_REG_ARRAY(&adapter->hw, reg, offset);
		if (val != (test[pat] & write & mask)) {
			e_err("pattern test failed (reg 0x%05X): got 0x%08X expected 0x%08X\n",
			      reg + (offset << 2), val,
			      (test[pat] & write & mask));
			*data = reg;
			return 1;
		}
	}
	return 0;
}

static bool reg_set_and_check(struct e1000_adapter *adapter, u64 *data,
			      int reg, u32 mask, u32 write)
{
	u32 val;
	__ew32(&adapter->hw, reg, write & mask);
	val = __er32(&adapter->hw, reg);
	if ((write & mask) != (val & mask)) {
		e_err("set/check test failed (reg 0x%05X): got 0x%08X expected 0x%08X\n",
		      reg, (val & mask), (write & mask));
		*data = reg;
		return 1;
	}
	return 0;
}
#define REG_PATTERN_TEST_ARRAY(reg, offset, mask, write)                       \
	do {                                                                   \
		if (reg_pattern_test(adapter, data, reg, offset, mask, write)) \
			return 1;                                              \
	} while (0)
#define REG_PATTERN_TEST(reg, mask, write)                                     \
	REG_PATTERN_TEST_ARRAY(reg, 0, mask, write)

#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 e1000_reg_test(struct e1000_adapter *adapter, u64 *data)
{
	struct e1000_hw *hw = &adapter->hw;
	struct e1000_mac_info *mac = &adapter->hw.mac;
	u32 value;
	u32 before;
	u32 after;
	u32 i;
	u32 toggle;
	u32 mask;
	u32 wlock_mac = 0;

	/* The status register is Read Only, so a write should fail.
	 * Some bits that get toggled are ignored.
	 */
	switch (mac->type) {
	/* there are several bits on newer hardware that are r/w */
	case e1000_82571:
	case e1000_82572:
	case e1000_80003es2lan:
		toggle = 0x7FFFF3FF;
		break;
        default:
		toggle = 0x7FFFF033;
		break;
	}

	before = er32(STATUS);
	value = (er32(STATUS) & toggle);
	ew32(STATUS, toggle);
	after = er32(STATUS) & toggle;
	if (value != after) {
		e_err("failed STATUS register test got: 0x%08X expected: 0x%08X\n",
		      after, value);
		*data = 1;
		return 1;
	}
	/* restore previous status */
	ew32(STATUS, before);

	if (!(adapter->flags & FLAG_IS_ICH)) {
		REG_PATTERN_TEST(E1000_FCAL, 0xFFFFFFFF, 0xFFFFFFFF);
		REG_PATTERN_TEST(E1000_FCAH, 0x0000FFFF, 0xFFFFFFFF);
		REG_PATTERN_TEST(E1000_FCT, 0x0000FFFF, 0xFFFFFFFF);
		REG_PATTERN_TEST(E1000_VET, 0x0000FFFF, 0xFFFFFFFF);
	}

	REG_PATTERN_TEST(E1000_RDTR, 0x0000FFFF, 0xFFFFFFFF);
	REG_PATTERN_TEST(E1000_RDBAH(0), 0xFFFFFFFF, 0xFFFFFFFF);
	REG_PATTERN_TEST(E1000_RDLEN(0), 0x000FFF80, 0x000FFFFF);
	REG_PATTERN_TEST(E1000_RDH(0), 0x0000FFFF, 0x0000FFFF);
	REG_PATTERN_TEST(E1000_RDT(0), 0x0000FFFF, 0x0000FFFF);
	REG_PATTERN_TEST(E1000_FCRTH, 0x0000FFF8, 0x0000FFF8);
	REG_PATTERN_TEST(E1000_FCTTV, 0x0000FFFF, 0x0000FFFF);
	REG_PATTERN_TEST(E1000_TIPG, 0x3FFFFFFF, 0x3FFFFFFF);
	REG_PATTERN_TEST(E1000_TDBAH(0), 0xFFFFFFFF, 0xFFFFFFFF);
	REG_PATTERN_TEST(E1000_TDLEN(0), 0x000FFF80, 0x000FFFFF);

	REG_SET_AND_CHECK(E1000_RCTL, 0xFFFFFFFF, 0x00000000);

	before = ((adapter->flags & FLAG_IS_ICH) ? 0x06C3B33E : 0x06DFB3FE);
	REG_SET_AND_CHECK(E1000_RCTL, before, 0x003FFFFB);
	REG_SET_AND_CHECK(E1000_TCTL, 0xFFFFFFFF, 0x00000000);

	REG_SET_AND_CHECK(E1000_RCTL, before, 0xFFFFFFFF);
	REG_PATTERN_TEST(E1000_RDBAL(0), 0xFFFFFFF0, 0xFFFFFFFF);
	if (!(adapter->flags & FLAG_IS_ICH))
		REG_PATTERN_TEST(E1000_TXCW, 0xC000FFFF, 0x0000FFFF);
	REG_PATTERN_TEST(E1000_TDBAL(0), 0xFFFFFFF0, 0xFFFFFFFF);
	REG_PATTERN_TEST(E1000_TIDV, 0x0000FFFF, 0x0000FFFF);
	mask = 0x8003FFFF;
	switch (mac->type) {
	case e1000_ich10lan:
	case e1000_pchlan:
	case e1000_pch2lan:
	case e1000_pch_lpt:
		mask |= (1 << 18);
		break;
	default:
		break;
	}

	if (mac->type == e1000_pch_lpt)
		wlock_mac = (er32(FWSM) & E1000_FWSM_WLOCK_MAC_MASK) >>
		    E1000_FWSM_WLOCK_MAC_SHIFT;

	for (i = 0; i < mac->rar_entry_count; i++) {
		if (mac->type == e1000_pch_lpt) {
			/* Cannot test write-protected SHRAL[n] registers */
			if ((wlock_mac == 1) || (wlock_mac && (i > wlock_mac)))
				continue;

			/* SHRAH[9] different than the others */
			if (i == 10)
				mask |= (1 << 30);
			else
				mask &= ~(1 << 30);
		}

		REG_PATTERN_TEST_ARRAY(E1000_RA, ((i << 1) + 1), mask,
				       0xFFFFFFFF);
	}

	for (i = 0; i < mac->mta_reg_count; i++)
		REG_PATTERN_TEST_ARRAY(E1000_MTA, i, 0xFFFFFFFF, 0xFFFFFFFF);

	*data = 0;

	return 0;
}

static int e1000_eeprom_test(struct e1000_adapter *adapter, u64 *data)
{
	u16 temp;
	u16 checksum = 0;
	u16 i;

	*data = 0;
	/* Read and add up the contents of the EEPROM */
	for (i = 0; i < (NVM_CHECKSUM_REG + 1); i++) {
		if ((e1000_read_nvm(&adapter->hw, i, 1, &temp)) < 0) {
			*data = 1;
			return *data;
		}
		checksum += temp;
	}

	/* If Checksum is not Correct return error else test passed */
	if ((checksum != (u16) NVM_SUM) && !(*data))
		*data = 2;

	return *data;
}

static irqreturn_t e1000_test_intr(int __always_unused irq, void *data)
{
	struct net_device *netdev = (struct net_device *) data;
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;

	adapter->test_icr |= er32(ICR);

	return IRQ_HANDLED;
}

static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
{
	struct net_device *netdev = adapter->netdev;
	struct e1000_hw *hw = &adapter->hw;
	u32 mask;
	u32 shared_int = 1;
	u32 irq = adapter->pdev->irq;
	int i;
	int ret_val = 0;
	int int_mode = E1000E_INT_MODE_LEGACY;

	*data = 0;

	/* NOTE: we don't test MSI/MSI-X interrupts here, yet */
	if (adapter->int_mode == E1000E_INT_MODE_MSIX) {
		int_mode = adapter->int_mode;
		e1000e_reset_interrupt_capability(adapter);
		adapter->int_mode = E1000E_INT_MODE_LEGACY;
		e1000e_set_interrupt_capability(adapter);
	}
	/* Hook up test interrupt handler just for this test */
	if (!request_irq(irq, e1000_test_intr, IRQF_PROBE_SHARED, netdev->name,
			 netdev)) {
		shared_int = 0;
	} else if (request_irq(irq, e1000_test_intr, IRQF_SHARED,
		 netdev->name, netdev)) {
		*data = 1;
		ret_val = -1;
		goto out;
	}
	e_info("testing %s interrupt\n", (shared_int ? "shared" : "unshared"));

	/* Disable all the interrupts */
	ew32(IMC, 0xFFFFFFFF);
	e1e_flush();
	usleep_range(10000, 20000);

	/* Test each interrupt */
	for (i = 0; i < 10; i++) {
		/* Interrupt to test */
		mask = 1 << i;

		if (adapter->flags & FLAG_IS_ICH) {
			switch (mask) {
			case E1000_ICR_RXSEQ:
				continue;
			case 0x00000100:
				if (adapter->hw.mac.type == e1000_ich8lan ||
				    adapter->hw.mac.type == e1000_ich9lan)
					continue;
				break;
			default:
				break;
			}
		}

		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;
			ew32(IMC, mask);
			ew32(ICS, mask);
			e1e_flush();
			usleep_range(10000, 20000);

			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;
		ew32(IMS, mask);
		ew32(ICS, mask);
		e1e_flush();
		usleep_range(10000, 20000);

		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;
			ew32(IMC, ~mask & 0x00007FFF);
			ew32(ICS, ~mask & 0x00007FFF);
			e1e_flush();
			usleep_range(10000, 20000);

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

	/* Disable all the interrupts */
	ew32(IMC, 0xFFFFFFFF);
	e1e_flush();
	usleep_range(10000, 20000);

	/* Unhook test interrupt handler */
	free_irq(irq, netdev);

out:
	if (int_mode == E1000E_INT_MODE_MSIX) {
		e1000e_reset_interrupt_capability(adapter);
		adapter->int_mode = int_mode;
		e1000e_set_interrupt_capability(adapter);
	}

	return ret_val;
}

static void e1000_free_desc_rings(struct e1000_adapter *adapter)
{
	struct e1000_ring *tx_ring = &adapter->test_tx_ring;
	struct e1000_ring *rx_ring = &adapter->test_rx_ring;
	struct pci_dev *pdev = adapter->pdev;
	int i;

	if (tx_ring->desc && tx_ring->buffer_info) {
		for (i = 0; i < tx_ring->count; i++) {
			if (tx_ring->buffer_info[i].dma)
				dma_unmap_single(&pdev->dev,
					tx_ring->buffer_info[i].dma,
					tx_ring->buffer_info[i].length,
					DMA_TO_DEVICE);
			if (tx_ring->buffer_info[i].skb)
				dev_kfree_skb(tx_ring->buffer_info[i].skb);
		}
	}

	if (rx_ring->desc && rx_ring->buffer_info) {
		for (i = 0; i < rx_ring->count; i++) {
			if (rx_ring->buffer_info[i].dma)
				dma_unmap_single(&pdev->dev,
					rx_ring->buffer_info[i].dma,
					2048, DMA_FROM_DEVICE);
			if (rx_ring->buffer_info[i].skb)
				dev_kfree_skb(rx_ring->buffer_info[i].skb);
		}
	}

	if (tx_ring->desc) {
		dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
				  tx_ring->dma);
		tx_ring->desc = NULL;
	}
	if (rx_ring->desc) {
		dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
				  rx_ring->dma);
		rx_ring->desc = NULL;
	}

	kfree(tx_ring->buffer_info);
	tx_ring->buffer_info = NULL;
	kfree(rx_ring->buffer_info);
	rx_ring->buffer_info = NULL;
}

static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
{
	struct e1000_ring *tx_ring = &adapter->test_tx_ring;
	struct e1000_ring *rx_ring = &adapter->test_rx_ring;
	struct pci_dev *pdev = adapter->pdev;
	struct e1000_hw *hw = &adapter->hw;
	u32 rctl;
	int i;
	int ret_val;

	/* Setup Tx descriptor ring and Tx buffers */

	if (!tx_ring->count)
		tx_ring->count = E1000_DEFAULT_TXD;

	tx_ring->buffer_info = kcalloc(tx_ring->count,
				       sizeof(struct e1000_buffer),
				       GFP_KERNEL);
	if (!tx_ring->buffer_info) {
		ret_val = 1;
		goto err_nomem;
	}

	tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
	tx_ring->size = ALIGN(tx_ring->size, 4096);
	tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
					   &tx_ring->dma, GFP_KERNEL);
	if (!tx_ring->desc) {
		ret_val = 2;
		goto err_nomem;
	}
	tx_ring->next_to_use = 0;
	tx_ring->next_to_clean = 0;

	ew32(TDBAL(0), ((u64) tx_ring->dma & 0x00000000FFFFFFFF));
	ew32(TDBAH(0), ((u64) tx_ring->dma >> 32));
	ew32(TDLEN(0), tx_ring->count * sizeof(struct e1000_tx_desc));
	ew32(TDH(0), 0);
	ew32(TDT(0), 0);
	ew32(TCTL, E1000_TCTL_PSP | E1000_TCTL_EN | E1000_TCTL_MULR |
	     E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT |
	     E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT);

	for (i = 0; i < tx_ring->count; i++) {
		struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*tx_ring, i);
		struct sk_buff *skb;
		unsigned int skb_size = 1024;

		skb = alloc_skb(skb_size, GFP_KERNEL);
		if (!skb) {
			ret_val = 3;
			goto err_nomem;
		}
		skb_put(skb, skb_size);
		tx_ring->buffer_info[i].skb = skb;
		tx_ring->buffer_info[i].length = skb->len;
		tx_ring->buffer_info[i].dma =
			dma_map_single(&pdev->dev, skb->data, skb->len,
				       DMA_TO_DEVICE);
		if (dma_mapping_error(&pdev->dev,
				      tx_ring->buffer_info[i].dma)) {
			ret_val = 4;
			goto err_nomem;
		}
		tx_desc->buffer_addr = cpu_to_le64(tx_ring->buffer_info[i].dma);
		tx_desc->lower.data = cpu_to_le32(skb->len);
		tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP |
						   E1000_TXD_CMD_IFCS |
						   E1000_TXD_CMD_RS);
		tx_desc->upper.data = 0;
	}

	/* Setup Rx descriptor ring and Rx buffers */

	if (!rx_ring->count)
		rx_ring->count = E1000_DEFAULT_RXD;

	rx_ring->buffer_info = kcalloc(rx_ring->count,
				       sizeof(struct e1000_buffer),
				       GFP_KERNEL);
	if (!rx_ring->buffer_info) {
		ret_val = 5;
		goto err_nomem;
	}

	rx_ring->size = rx_ring->count * sizeof(union e1000_rx_desc_extended);
	rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
					   &rx_ring->dma, GFP_KERNEL);
	if (!rx_ring->desc) {
		ret_val = 6;
		goto err_nomem;
	}
	rx_ring->next_to_use = 0;
	rx_ring->next_to_clean = 0;

	rctl = er32(RCTL);
	if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
		ew32(RCTL, rctl & ~E1000_RCTL_EN);
	ew32(RDBAL(0), ((u64) rx_ring->dma & 0xFFFFFFFF));
	ew32(RDBAH(0), ((u64) rx_ring->dma >> 32));
	ew32(RDLEN(0), rx_ring->size);
	ew32(RDH(0), 0);
	ew32(RDT(0), 0);
	rctl = E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_SZ_2048 |
		E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_LPE |
		E1000_RCTL_SBP | E1000_RCTL_SECRC |
		E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
		(adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
	ew32(RCTL, rctl);

	for (i = 0; i < rx_ring->count; i++) {
		union e1000_rx_desc_extended *rx_desc;
		struct sk_buff *skb;

		skb = alloc_skb(2048 + NET_IP_ALIGN, GFP_KERNEL);
		if (!skb) {
			ret_val = 7;
			goto err_nomem;
		}
		skb_reserve(skb, NET_IP_ALIGN);
		rx_ring->buffer_info[i].skb = skb;
		rx_ring->buffer_info[i].dma =
			dma_map_single(&pdev->dev, skb->data, 2048,
				       DMA_FROM_DEVICE);
		if (dma_mapping_error(&pdev->dev,
				      rx_ring->buffer_info[i].dma)) {
			ret_val = 8;
			goto err_nomem;
		}
		rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
		rx_desc->read.buffer_addr =
		    cpu_to_le64(rx_ring->buffer_info[i].dma);
		memset(skb->data, 0x00, skb->len);
	}

	return 0;

err_nomem:
	e1000_free_desc_rings(adapter);
	return ret_val;
}

static void e1000_phy_disable_receiver(struct e1000_adapter *adapter)
{
	/* Write out to PHY registers 29 and 30 to disable the Receiver. */
	e1e_wphy(&adapter->hw, 29, 0x001F);
	e1e_wphy(&adapter->hw, 30, 0x8FFC);
	e1e_wphy(&adapter->hw, 29, 0x001A);
	e1e_wphy(&adapter->hw, 30, 0x8FF0);
}

static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
{
	struct e1000_hw *hw = &adapter->hw;
	u32 ctrl_reg = 0;
	u16 phy_reg = 0;
	s32 ret_val = 0;

	hw->mac.autoneg = 0;

	if (hw->phy.type == e1000_phy_ife) {
		/* force 100, set loopback */
		e1e_wphy(hw, MII_BMCR, 0x6100);

		/* Now set up the MAC to the same speed/duplex as the PHY. */
		ctrl_reg = er32(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_100 |/* Force Speed to 100 */
			     E1000_CTRL_FD);	 /* Force Duplex to FULL */

		ew32(CTRL, ctrl_reg);
		e1e_flush();
		udelay(500);

		return 0;
	}

	/* Specific PHY configuration for loopback */
	switch (hw->phy.type) {
	case e1000_phy_m88:
		/* Auto-MDI/MDIX Off */
		e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, 0x0808);
		/* reset to update Auto-MDI/MDIX */
		e1e_wphy(hw, MII_BMCR, 0x9140);
		/* autoneg off */
		e1e_wphy(hw, MII_BMCR, 0x8140);
		break;
	case e1000_phy_gg82563:
		e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, 0x1CC);
		break;
	case e1000_phy_bm:
		/* Set Default MAC Interface speed to 1GB */
		e1e_rphy(hw, PHY_REG(2, 21), &phy_reg);
		phy_reg &= ~0x0007;
		phy_reg |= 0x006;
		e1e_wphy(hw, PHY_REG(2, 21), phy_reg);
		/* Assert SW reset for above settings to take effect */
		hw->phy.ops.commit(hw);
		mdelay(1);
		/* Force Full Duplex */
		e1e_rphy(hw, PHY_REG(769, 16), &phy_reg);
		e1e_wphy(hw, PHY_REG(769, 16), phy_reg | 0x000C);
		/* Set Link Up (in force link) */
		e1e_rphy(hw, PHY_REG(776, 16), &phy_reg);
		e1e_wphy(hw, PHY_REG(776, 16), phy_reg | 0x0040);
		/* Force Link */
		e1e_rphy(hw, PHY_REG(769, 16), &phy_reg);
		e1e_wphy(hw, PHY_REG(769, 16), phy_reg | 0x0040);
		/* Set Early Link Enable */
		e1e_rphy(hw, PHY_REG(769, 20), &phy_reg);
		e1e_wphy(hw, PHY_REG(769, 20), phy_reg | 0x0400);
		break;
	case e1000_phy_82577:
	case e1000_phy_82578:
		/* Workaround: K1 must be disabled for stable 1Gbps operation */
		ret_val = hw->phy.ops.acquire(hw);
		if (ret_val) {
			e_err("Cannot setup 1Gbps loopback.\n");
			return ret_val;
		}
		e1000_configure_k1_ich8lan(hw, false);
		hw->phy.ops.release(hw);
		break;
	case e1000_phy_82579:
		/* Disable PHY energy detect power down */
		e1e_rphy(hw, PHY_REG(0, 21), &phy_reg);
		e1e_wphy(hw, PHY_REG(0, 21), phy_reg & ~(1 << 3));
		/* Disable full chip energy detect */
		e1e_rphy(hw, PHY_REG(776, 18), &phy_reg);
		e1e_wphy(hw, PHY_REG(776, 18), phy_reg | 1);
		/* Enable loopback on the PHY */
		e1e_wphy(hw, I82577_PHY_LBK_CTRL, 0x8001);
		break;
	default:
		break;
	}

	/* force 1000, set loopback */
	e1e_wphy(hw, MII_BMCR, 0x4140);
	mdelay(250);

	/* Now set up the MAC to the same speed/duplex as the PHY. */
	ctrl_reg = er32(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 */

	if (adapter->flags & FLAG_IS_ICH)
		ctrl_reg |= E1000_CTRL_SLU;	/* Set Link Up */

	if (hw->phy.media_type == e1000_media_type_copper &&
	    hw->phy.type == e1000_phy_m88) {
		ctrl_reg |= E1000_CTRL_ILOS; /* Invert Loss of Signal */
	} else {
		/* Set the ILOS bit on the fiber Nic if half duplex link is
		 * detected.
		 */
		if ((er32(STATUS) & E1000_STATUS_FD) == 0)
			ctrl_reg |= (E1000_CTRL_ILOS | E1000_CTRL_SLU);
	}

	ew32(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)
		e1000_phy_disable_receiver(adapter);

	udelay(500);

	return 0;
}

static int e1000_set_82571_fiber_loopback(struct e1000_adapter *adapter)
{
	struct e1000_hw *hw = &adapter->hw;
	u32 ctrl = er32(CTRL);
	int link;

	/* special requirements for 82571/82572 fiber adapters */

	/* jump through hoops to make sure link is up because serdes
	 * link is hardwired up
	 */
	ctrl |= E1000_CTRL_SLU;
	ew32(CTRL, ctrl);

	/* disable autoneg */
	ctrl = er32(TXCW);
	ctrl &= ~(1 << 31);
	ew32(TXCW, ctrl);

	link = (er32(STATUS) & E1000_STATUS_LU);

	if (!link) {
		/* set invert loss of signal */
		ctrl = er32(CTRL);
		ctrl |= E1000_CTRL_ILOS;
		ew32(CTRL, ctrl);
	}

	/* special write to serdes control register to enable SerDes analog
	 * loopback
	 */
#define E1000_SERDES_LB_ON 0x410
	ew32(SCTL, E1000_SERDES_LB_ON);
	e1e_flush();
	usleep_range(10000, 20000);

	return 0;
}

/* only call this for fiber/serdes connections to es2lan */
static int e1000_set_es2lan_mac_loopback(struct e1000_adapter *adapter)
{
	struct e1000_hw *hw = &adapter->hw;
	u32 ctrlext = er32(CTRL_EXT);
	u32 ctrl = er32(CTRL);

	/* save CTRL_EXT to restore later, reuse an empty variable (unused
	 * on mac_type 80003es2lan)
	 */
	adapter->tx_fifo_head = ctrlext;

	/* clear the serdes mode bits, putting the device into mac loopback */
	ctrlext &= ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
	ew32(CTRL_EXT, ctrlext);

	/* force speed to 1000/FD, link up */
	ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
	ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX |
		 E1000_CTRL_SPD_1000 | E1000_CTRL_FD);
	ew32(CTRL, ctrl);

	/* set mac loopback */
	ctrl = er32(RCTL);
	ctrl |= E1000_RCTL_LBM_MAC;
	ew32(RCTL, ctrl);

	/* set testing mode parameters (no need to reset later) */
#define KMRNCTRLSTA_OPMODE (0x1F << 16)
#define KMRNCTRLSTA_OPMODE_1GB_FD_GMII 0x0582
	ew32(KMRNCTRLSTA,
	     (KMRNCTRLSTA_OPMODE | KMRNCTRLSTA_OPMODE_1GB_FD_GMII));

	return 0;
}

static int e1000_setup_loopback_test(struct e1000_adapter *adapter)
{
	struct e1000_hw *hw = &adapter->hw;
	u32 rctl;

	if (hw->phy.media_type == e1000_media_type_fiber ||
	    hw->phy.media_type == e1000_media_type_internal_serdes) {
		switch (hw->mac.type) {
		case e1000_80003es2lan:
			return e1000_set_es2lan_mac_loopback(adapter);
			break;
		case e1000_82571:
		case e1000_82572:
			return e1000_set_82571_fiber_loopback(adapter);
			break;
		default:
			rctl = er32(RCTL);
			rctl |= E1000_RCTL_LBM_TCVR;
			ew32(RCTL, rctl);
			return 0;
		}
	} else if (hw->phy.media_type == e1000_media_type_copper) {
		return e1000_integrated_phy_loopback(adapter);
	}

	return 7;
}

static void e1000_loopback_cleanup(struct e1000_adapter *adapter)
{
	struct e1000_hw *hw = &adapter->hw;
	u32 rctl;
	u16 phy_reg;

	rctl = er32(RCTL);
	rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
	ew32(RCTL, rctl);

	switch (hw->mac.type) {
	case e1000_80003es2lan:
		if (hw->phy.media_type == e1000_media_type_fiber ||
		    hw->phy.media_type == e1000_media_type_internal_serdes) {
			/* restore CTRL_EXT, stealing space from tx_fifo_head */
			ew32(CTRL_EXT, adapter->tx_fifo_head);
			adapter->tx_fifo_head = 0;
		}
		/* fall through */
	case e1000_82571:
	case e1000_82572:
		if (hw->phy.media_type == e1000_media_type_fiber ||
		    hw->phy.media_type == e1000_media_type_internal_serdes) {
#define E1000_SERDES_LB_OFF 0x400
			ew32(SCTL, E1000_SERDES_LB_OFF);
			e1e_flush();
			usleep_range(10000, 20000);
			break;
		}
		/* Fall Through */
	default:
		hw->mac.autoneg = 1;
		if (hw->phy.type == e1000_phy_gg82563)
			e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, 0x180);
		e1e_rphy(hw, MII_BMCR, &phy_reg);
		if (phy_reg & BMCR_LOOPBACK) {
			phy_reg &= ~BMCR_LOOPBACK;
			e1e_wphy(hw, MII_BMCR, phy_reg);
			if (hw->phy.ops.commit)
				hw->phy.ops.commit(hw);
		}
		break;
	}
}

static void e1000_create_lbtest_frame(struct sk_buff *skb,
				      unsigned int frame_size)
{
	memset(skb->data, 0xFF, frame_size);
	frame_size &= ~1;
	memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1);
	memset(&skb->data[frame_size / 2 + 10], 0xBE, 1);
	memset(&skb->data[frame_size / 2 + 12], 0xAF, 1);
}

static int e1000_check_lbtest_frame(struct sk_buff *skb,
				    unsigned int frame_size)
{
	frame_size &= ~1;
	if (*(skb->data + 3) == 0xFF)
		if ((*(skb->data + frame_size / 2 + 10) == 0xBE) &&
		   (*(skb->data + frame_size / 2 + 12) == 0xAF))
			return 0;
	return 13;
}

static int e1000_run_loopback_test(struct e1000_adapter *adapter)
{
	struct e1000_ring *tx_ring = &adapter->test_tx_ring;
	struct e1000_ring *rx_ring = &adapter->test_rx_ring;
	struct pci_dev *pdev = adapter->pdev;
	struct e1000_hw *hw = &adapter->hw;
	int i, j, k, l;
	int lc;
	int good_cnt;
	int ret_val = 0;
	unsigned long time;

	ew32(RDT(0), rx_ring->count - 1);

	/* 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;

	k = 0;
	l = 0;
	for (j = 0; j <= lc; j++) { /* loop count loop */
		for (i = 0; i < 64; i++) { /* send the packets */
			e1000_create_lbtest_frame(tx_ring->buffer_info[k].skb,
						  1024);
			dma_sync_single_for_device(&pdev->dev,
					tx_ring->buffer_info[k].dma,
					tx_ring->buffer_info[k].length,
					DMA_TO_DEVICE);
			k++;
			if (k == tx_ring->count)
				k = 0;
		}
		ew32(TDT(0), k);
		e1e_flush();
		msleep(200);
		time = jiffies; /* set the start time for the receive */
		good_cnt = 0;
		do { /* receive the sent packets */
			dma_sync_single_for_cpu(&pdev->dev,
					rx_ring->buffer_info[l].dma, 2048,
					DMA_FROM_DEVICE);

			ret_val = e1000_check_lbtest_frame(
					rx_ring->buffer_info[l].skb, 1024);
			if (!ret_val)
				good_cnt++;
			l++;
			if (l == rx_ring->count)
				l = 0;
			/* time + 20 msecs (200 msecs on 2.4) is more than
			 * enough time to complete the receives, if it's
			 * exceeded, break and error off
			 */
		} while ((good_cnt < 64) && !time_after(jiffies, time + 20));
		if (good_cnt != 64) {
			ret_val = 13; /* ret_val is the same as mis-compare */
			break;
		}
		if (jiffies >= (time + 20)) {
			ret_val = 14; /* error code for time out error */
			break;
		}
	} /* end loop count loop */
	return ret_val;
}

static int e1000_loopback_test(struct e1000_adapter *adapter, u64 *data)
{
	struct e1000_hw *hw = &adapter->hw;

	/* PHY loopback cannot be performed if SoL/IDER sessions are active */
	if (hw->phy.ops.check_reset_block &&
	    hw->phy.ops.check_reset_block(hw)) {
		e_err("Cannot do PHY loopback test when SoL/IDER is active.\n");
		*data = 0;
		goto out;
	}

	*data = e1000_setup_desc_rings(adapter);
	if (*data)
		goto out;

	*data = e1000_setup_loopback_test(adapter);
	if (*data)
		goto err_loopback;

	*data = e1000_run_loopback_test(adapter);
	e1000_loopback_cleanup(adapter);

err_loopback:
	e1000_free_desc_rings(adapter);
out:
	return *data;
}

static int e1000_link_test(struct e1000_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(hw);
			if (hw->mac.serdes_has_link)
				return *data;
			msleep(20);
		} while (i++ < 3750);

		*data = 1;
	} else {
		hw->mac.ops.check_for_link(hw);
		if (hw->mac.autoneg)
			/* On some Phy/switch combinations, link establishment
			 * can take a few seconds more than expected.
			 */
			msleep(5000);

		if (!(er32(STATUS) & E1000_STATUS_LU))
			*data = 1;
	}
	return *data;
}

static int e1000e_get_sset_count(struct net_device __always_unused *netdev,
				 int sset)
{
	switch (sset) {
	case ETH_SS_TEST:
		return E1000_TEST_LEN;
	case ETH_SS_STATS:
		return E1000_STATS_LEN;
	default:
		return -EOPNOTSUPP;
	}
}

static void e1000_diag_test(struct net_device *netdev,
			    struct ethtool_test *eth_test, u64 *data)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	u16 autoneg_advertised;
	u8 forced_speed_duplex;
	u8 autoneg;
	bool if_running = netif_running(netdev);

	set_bit(__E1000_TESTING, &adapter->state);

	if (!if_running) {
		/* Get control of and reset hardware */
		if (adapter->flags & FLAG_HAS_AMT)
			e1000e_get_hw_control(adapter);

		e1000e_power_up_phy(adapter);

		adapter->hw.phy.autoneg_wait_to_complete = 1;
		e1000e_reset(adapter);
		adapter->hw.phy.autoneg_wait_to_complete = 0;
	}

	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;

		e_info("offline testing starting\n");

		if (if_running)
			/* indicate we're in test mode */
			dev_close(netdev);

		if (e1000_reg_test(adapter, &data[0]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		e1000e_reset(adapter);
		if (e1000_eeprom_test(adapter, &data[1]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		e1000e_reset(adapter);
		if (e1000_intr_test(adapter, &data[2]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		e1000e_reset(adapter);
		if (e1000_loopback_test(adapter, &data[3]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		/* force this routine to wait until autoneg complete/timeout */
		adapter->hw.phy.autoneg_wait_to_complete = 1;
		e1000e_reset(adapter);
		adapter->hw.phy.autoneg_wait_to_complete = 0;

		if (e1000_link_test(adapter, &data[4]))
			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;
		e1000e_reset(adapter);

		clear_bit(__E1000_TESTING, &adapter->state);
		if (if_running)
			dev_open(netdev);
	} else {
		/* Online tests */

		e_info("online testing starting\n");

		/* register, eeprom, intr and loopback tests not run online */
		data[0] = 0;
		data[1] = 0;
		data[2] = 0;
		data[3] = 0;

		if (e1000_link_test(adapter, &data[4]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		clear_bit(__E1000_TESTING, &adapter->state);
	}

	if (!if_running) {
		e1000e_reset(adapter);

		if (adapter->flags & FLAG_HAS_AMT)
			e1000e_release_hw_control(adapter);
	}

	msleep_interruptible(4 * 1000);
}

static void e1000_get_wol(struct net_device *netdev,
			  struct ethtool_wolinfo *wol)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);

	wol->supported = 0;
	wol->wolopts = 0;

	if (!(adapter->flags & FLAG_HAS_WOL) ||
	    !device_can_wakeup(&adapter->pdev->dev))
		return;

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

	/* apply any specific unsupported masks here */
	if (adapter->flags & FLAG_NO_WAKE_UCAST) {
		wol->supported &= ~WAKE_UCAST;

		if (adapter->wol & E1000_WUFC_EX)
			e_err("Interface does not support directed (unicast) frame wake-up packets\n");
	}

	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 e1000_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);

	if (!(adapter->flags & FLAG_HAS_WOL) ||
	    !device_can_wakeup(&adapter->pdev->dev) ||
	    (wol->wolopts & ~(WAKE_UCAST | WAKE_MCAST | WAKE_BCAST |
			      WAKE_MAGIC | WAKE_PHY)))
		return -EOPNOTSUPP;

	/* 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;
}

static int e1000_set_phys_id(struct net_device *netdev,
			     enum ethtool_phys_id_state state)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;

	switch (state) {
	case ETHTOOL_ID_ACTIVE:
		if (!hw->mac.ops.blink_led)
			return 2;	/* cycle on/off twice per second */

		hw->mac.ops.blink_led(hw);
		break;

	case ETHTOOL_ID_INACTIVE:
		if (hw->phy.type == e1000_phy_ife)
			e1e_wphy(hw, IFE_PHY_SPECIAL_CONTROL_LED, 0);
		hw->mac.ops.led_off(hw);
		hw->mac.ops.cleanup_led(hw);
		break;

	case ETHTOOL_ID_ON:
		hw->mac.ops.led_on(hw);
		break;

	case ETHTOOL_ID_OFF:
		hw->mac.ops.led_off(hw);
		break;
	}
	return 0;
}

static int e1000_get_coalesce(struct net_device *netdev,
			      struct ethtool_coalesce *ec)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);

	if (adapter->itr_setting <= 4)
		ec->rx_coalesce_usecs = adapter->itr_setting;
	else
		ec->rx_coalesce_usecs = 1000000 / adapter->itr_setting;

	return 0;
}

static int e1000_set_coalesce(struct net_device *netdev,
			      struct ethtool_coalesce *ec)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);

	if ((ec->rx_coalesce_usecs > E1000_MAX_ITR_USECS) ||
	    ((ec->rx_coalesce_usecs > 4) &&
	     (ec->rx_coalesce_usecs < E1000_MIN_ITR_USECS)) ||
	    (ec->rx_coalesce_usecs == 2))
		return -EINVAL;

	if (ec->rx_coalesce_usecs == 4) {
		adapter->itr_setting = 4;
		adapter->itr = adapter->itr_setting;
	} else if (ec->rx_coalesce_usecs <= 3) {
		adapter->itr = 20000;
		adapter->itr_setting = ec->rx_coalesce_usecs;
	} else {
		adapter->itr = (1000000 / ec->rx_coalesce_usecs);
		adapter->itr_setting = adapter->itr & ~3;
	}

	if (adapter->itr_setting != 0)
		e1000e_write_itr(adapter, adapter->itr);
	else
		e1000e_write_itr(adapter, 0);

	return 0;
}

static int e1000_nway_reset(struct net_device *netdev)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);

	if (!netif_running(netdev))
		return -EAGAIN;

	if (!adapter->hw.mac.autoneg)
		return -EINVAL;

	e1000e_reinit_locked(adapter);

	return 0;
}

static void e1000_get_ethtool_stats(struct net_device *netdev,
				    struct ethtool_stats __always_unused *stats,
				    u64 *data)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct rtnl_link_stats64 net_stats;
	int i;
	char *p = NULL;

	e1000e_get_stats64(netdev, &net_stats);
	for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
		switch (e1000_gstrings_stats[i].type) {
		case NETDEV_STATS:
			p = (char *) &net_stats +
					e1000_gstrings_stats[i].stat_offset;
			break;
		case E1000_STATS:
			p = (char *) adapter +
					e1000_gstrings_stats[i].stat_offset;
			break;
		default:
			data[i] = 0;
			continue;
		}

		data[i] = (e1000_gstrings_stats[i].sizeof_stat ==
			sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
	}
}

static void e1000_get_strings(struct net_device __always_unused *netdev,
			      u32 stringset, u8 *data)
{
	u8 *p = data;
	int i;

	switch (stringset) {
	case ETH_SS_TEST:
		memcpy(data, e1000_gstrings_test, sizeof(e1000_gstrings_test));
		break;
	case ETH_SS_STATS:
		for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
			memcpy(p, e1000_gstrings_stats[i].stat_string,
			       ETH_GSTRING_LEN);
			p += ETH_GSTRING_LEN;
		}
		break;
	}
}

static int e1000_get_rxnfc(struct net_device *netdev,
			   struct ethtool_rxnfc *info,
			   u32 __always_unused *rule_locs)
{
	info->data = 0;

	switch (info->cmd) {
	case ETHTOOL_GRXFH: {
		struct e1000_adapter *adapter = netdev_priv(netdev);
		struct e1000_hw *hw = &adapter->hw;
		u32 mrqc = er32(MRQC);

		if (!(mrqc & E1000_MRQC_RSS_FIELD_MASK))
			return 0;

		switch (info->flow_type) {
		case TCP_V4_FLOW:
			if (mrqc & E1000_MRQC_RSS_FIELD_IPV4_TCP)
				info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
			/* fall through */
		case UDP_V4_FLOW:
		case SCTP_V4_FLOW:
		case AH_ESP_V4_FLOW:
		case IPV4_FLOW:
			if (mrqc & E1000_MRQC_RSS_FIELD_IPV4)
				info->data |= RXH_IP_SRC | RXH_IP_DST;
			break;
		case TCP_V6_FLOW:
			if (mrqc & E1000_MRQC_RSS_FIELD_IPV6_TCP)
				info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
			/* fall through */
		case UDP_V6_FLOW:
		case SCTP_V6_FLOW:
		case AH_ESP_V6_FLOW:
		case IPV6_FLOW:
			if (mrqc & E1000_MRQC_RSS_FIELD_IPV6)
				info->data |= RXH_IP_SRC | RXH_IP_DST;
			break;
		default:
			break;
		}
		return 0;
	}
	default:
		return -EOPNOTSUPP;
	}
}

static int e1000e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;
	u16 cap_addr, adv_addr, lpa_addr, pcs_stat_addr, phy_data, lpi_ctrl;
	u32 status, ret_val;

	if (!(adapter->flags & FLAG_IS_ICH) ||
	    !(adapter->flags2 & FLAG2_HAS_EEE))
		return -EOPNOTSUPP;

	switch (hw->phy.type) {
	case e1000_phy_82579:
		cap_addr = I82579_EEE_CAPABILITY;
		adv_addr = I82579_EEE_ADVERTISEMENT;
		lpa_addr = I82579_EEE_LP_ABILITY;
		pcs_stat_addr = I82579_EEE_PCS_STATUS;
		break;
	case e1000_phy_i217:
		cap_addr = I217_EEE_CAPABILITY;
		adv_addr = I217_EEE_ADVERTISEMENT;
		lpa_addr = I217_EEE_LP_ABILITY;
		pcs_stat_addr = I217_EEE_PCS_STATUS;
		break;
	default:
		return -EOPNOTSUPP;
	}

	ret_val = hw->phy.ops.acquire(hw);
	if (ret_val)
		return -EBUSY;

	/* EEE Capability */
	ret_val = e1000_read_emi_reg_locked(hw, cap_addr, &phy_data);
	if (ret_val)
		goto release;
	edata->supported = mmd_eee_cap_to_ethtool_sup_t(phy_data);

	/* EEE Advertised */
	ret_val = e1000_read_emi_reg_locked(hw, adv_addr, &phy_data);
	if (ret_val)
		goto release;
	edata->advertised = mmd_eee_adv_to_ethtool_adv_t(phy_data);

	/* EEE Link Partner Advertised */
	ret_val = e1000_read_emi_reg_locked(hw, lpa_addr, &phy_data);
	if (ret_val)
		goto release;
	edata->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(phy_data);

	/* EEE PCS Status */
	ret_val = e1000_read_emi_reg_locked(hw, pcs_stat_addr, &phy_data);
	if (hw->phy.type == e1000_phy_82579)
		phy_data <<= 8;

release:
	hw->phy.ops.release(hw);
	if (ret_val)
		return -ENODATA;

	e1e_rphy(hw, I82579_LPI_CTRL, &lpi_ctrl);
	status = er32(STATUS);

	/* Result of the EEE auto negotiation - there is no register that
	 * has the status of the EEE negotiation so do a best-guess based
	 * on whether both Tx and Rx LPI indications have been received or
	 * base it on the link speed, the EEE advertised speeds on both ends
	 * and the speeds on which EEE is enabled locally.
	 */
	if (((phy_data & E1000_EEE_TX_LPI_RCVD) &&
	     (phy_data & E1000_EEE_RX_LPI_RCVD)) ||
	    ((status & E1000_STATUS_SPEED_100) &&
	     (edata->advertised & ADVERTISED_100baseT_Full) &&
	     (edata->lp_advertised & ADVERTISED_100baseT_Full) &&
	     (lpi_ctrl & I82579_LPI_CTRL_100_ENABLE)) ||
	    ((status & E1000_STATUS_SPEED_1000) &&
	     (edata->advertised & ADVERTISED_1000baseT_Full) &&
	     (edata->lp_advertised & ADVERTISED_1000baseT_Full) &&
	     (lpi_ctrl & I82579_LPI_CTRL_1000_ENABLE)))
		edata->eee_active = true;

	edata->eee_enabled = !hw->dev_spec.ich8lan.eee_disable;
	edata->tx_lpi_enabled = true;
	edata->tx_lpi_timer = er32(LPIC) >> E1000_LPIC_LPIET_SHIFT;

	return 0;
}

static int e1000e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;
	struct ethtool_eee eee_curr;
	s32 ret_val;

	if (!(adapter->flags & FLAG_IS_ICH) ||
	    !(adapter->flags2 & FLAG2_HAS_EEE))
		return -EOPNOTSUPP;

	ret_val = e1000e_get_eee(netdev, &eee_curr);
	if (ret_val)
		return ret_val;

	if (eee_curr.advertised != edata->advertised) {
		e_err("Setting EEE advertisement is not supported\n");
		return -EINVAL;
	}

	if (eee_curr.tx_lpi_enabled != edata->tx_lpi_enabled) {
		e_err("Setting EEE tx-lpi is not supported\n");
		return -EINVAL;
	}

	if (eee_curr.tx_lpi_timer != edata->tx_lpi_timer) {
		e_err("Setting EEE Tx LPI timer is not supported\n");
		return -EINVAL;
	}

	if (hw->dev_spec.ich8lan.eee_disable != !edata->eee_enabled) {
		hw->dev_spec.ich8lan.eee_disable = !edata->eee_enabled;

		/* reset the link */
		if (netif_running(netdev))
			e1000e_reinit_locked(adapter);
		else
			e1000e_reset(adapter);
	}

	return 0;
}

static int e1000e_get_ts_info(struct net_device *netdev,
			      struct ethtool_ts_info *info)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);

	ethtool_op_get_ts_info(netdev, info);

	if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP))
		return 0;

	info->so_timestamping |= (SOF_TIMESTAMPING_TX_HARDWARE |
				  SOF_TIMESTAMPING_RX_HARDWARE |
				  SOF_TIMESTAMPING_RAW_HARDWARE);

	info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);

	info->rx_filters = ((1 << HWTSTAMP_FILTER_NONE) |
			    (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
			    (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
			    (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
			    (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) |
			    (1 << HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
			    (1 << HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
			    (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
			    (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
			    (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
			    (1 << HWTSTAMP_FILTER_ALL));

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

	return 0;
}

static int e1000e_ethtool_begin(struct net_device *netdev)
{
	return pm_runtime_get_sync(netdev->dev.parent);
}

static void e1000e_ethtool_complete(struct net_device *netdev)
{
	pm_runtime_put_sync(netdev->dev.parent);
}

static const struct ethtool_ops e1000_ethtool_ops = {
	.begin			= e1000e_ethtool_begin,
	.complete		= e1000e_ethtool_complete,
	.get_settings		= e1000_get_settings,
	.set_settings		= e1000_set_settings,
	.get_drvinfo		= e1000_get_drvinfo,
	.get_regs_len		= e1000_get_regs_len,
	.get_regs		= e1000_get_regs,
	.get_wol		= e1000_get_wol,
	.set_wol		= e1000_set_wol,
	.get_msglevel		= e1000_get_msglevel,
	.set_msglevel		= e1000_set_msglevel,
	.nway_reset		= e1000_nway_reset,
	.get_link		= ethtool_op_get_link,
	.get_eeprom_len		= e1000_get_eeprom_len,
	.get_eeprom		= e1000_get_eeprom,
	.set_eeprom		= e1000_set_eeprom,
	.get_ringparam		= e1000_get_ringparam,
	.set_ringparam		= e1000_set_ringparam,
	.get_pauseparam		= e1000_get_pauseparam,
	.set_pauseparam		= e1000_set_pauseparam,
	.self_test		= e1000_diag_test,
	.get_strings		= e1000_get_strings,
	.set_phys_id		= e1000_set_phys_id,
	.get_ethtool_stats	= e1000_get_ethtool_stats,
	.get_sset_count		= e1000e_get_sset_count,
	.get_coalesce		= e1000_get_coalesce,
	.set_coalesce		= e1000_set_coalesce,
	.get_rxnfc		= e1000_get_rxnfc,
	.get_ts_info		= e1000e_get_ts_info,
	.get_eee		= e1000e_get_eee,
	.set_eee		= e1000e_set_eee,
};

void e1000e_set_ethtool_ops(struct net_device *netdev)
{
	SET_ETHTOOL_OPS(netdev, &e1000_ethtool_ops);
}