1

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

     2

     3

  Intel PRO/1000 Linux driver

     4

  Copyright(c) 1999 - 2006 Intel Corporation.

     5

     6

  This program is free software; you can redistribute it and/or modify it

     7

  under the terms and conditions of the GNU General Public License,

     8

  version 2, as published by the Free Software Foundation.

     9

    10

  This program is distributed in the hope it will be useful, but WITHOUT

    11

  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12

  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

    13

  more details.

    14

    15

  You should have received a copy of the GNU General Public License along with

    16

  this program; if not, write to the Free Software Foundation, Inc.,

    17

  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

    18

    19

  The full GNU General Public License is included in this distribution in

    20

  the file called "COPYING".

    21

    22

  Contact Information:

    23

  Linux NICS <linux.nics@intel.com>

    24

  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>

    25

  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

    26

    27

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

    28

    29

/* ethtool support for e1000 */

    30

    31

#include "e1000.h"

    32

#include <asm/uaccess.h>

    33

    34

enum {NETDEV_STATS, E1000_STATS};

    35

    36

struct e1000_stats {

    37

	char stat_string[ETH_GSTRING_LEN];

    38

	int type;

    39

	int sizeof_stat;

    40

	int stat_offset;

    41

};

    42

    43

#define E1000_STAT(m)		E1000_STATS, \

    44

				sizeof(((struct e1000_adapter *)0)->m), \

    45

		      		offsetof(struct e1000_adapter, m)

    46

#define E1000_NETDEV_STAT(m)	NETDEV_STATS, \

    47

				sizeof(((struct net_device *)0)->m), \

    48

				offsetof(struct net_device, m)

    49

    50

static const struct e1000_stats e1000_gstrings_stats[] = {

    51

	{ "rx_packets", E1000_STAT(stats.gprc) },

    52

	{ "tx_packets", E1000_STAT(stats.gptc) },

    53

	{ "rx_bytes", E1000_STAT(stats.gorcl) },

    54

	{ "tx_bytes", E1000_STAT(stats.gotcl) },

    55

	{ "rx_broadcast", E1000_STAT(stats.bprc) },

    56

	{ "tx_broadcast", E1000_STAT(stats.bptc) },

    57

	{ "rx_multicast", E1000_STAT(stats.mprc) },

    58

	{ "tx_multicast", E1000_STAT(stats.mptc) },

    59

	{ "rx_errors", E1000_STAT(stats.rxerrc) },

    60

	{ "tx_errors", E1000_STAT(stats.txerrc) },

    61

	{ "tx_dropped", E1000_NETDEV_STAT(stats.tx_dropped) },

    62

	{ "multicast", E1000_STAT(stats.mprc) },

    63

	{ "collisions", E1000_STAT(stats.colc) },

    64

	{ "rx_length_errors", E1000_STAT(stats.rlerrc) },

    65

	{ "rx_over_errors", E1000_NETDEV_STAT(stats.rx_over_errors) },

    66

	{ "rx_crc_errors", E1000_STAT(stats.crcerrs) },

    67

	{ "rx_frame_errors", E1000_NETDEV_STAT(stats.rx_frame_errors) },

    68

	{ "rx_no_buffer_count", E1000_STAT(stats.rnbc) },

    69

	{ "rx_missed_errors", E1000_STAT(stats.mpc) },

    70

	{ "tx_aborted_errors", E1000_STAT(stats.ecol) },

    71

	{ "tx_carrier_errors", E1000_STAT(stats.tncrs) },

    72

	{ "tx_fifo_errors", E1000_NETDEV_STAT(stats.tx_fifo_errors) },

    73

	{ "tx_heartbeat_errors", E1000_NETDEV_STAT(stats.tx_heartbeat_errors) },

    74

	{ "tx_window_errors", E1000_STAT(stats.latecol) },

    75

	{ "tx_abort_late_coll", E1000_STAT(stats.latecol) },

    76

	{ "tx_deferred_ok", E1000_STAT(stats.dc) },

    77

	{ "tx_single_coll_ok", E1000_STAT(stats.scc) },

    78

	{ "tx_multi_coll_ok", E1000_STAT(stats.mcc) },

    79

	{ "tx_timeout_count", E1000_STAT(tx_timeout_count) },

    80

	{ "tx_restart_queue", E1000_STAT(restart_queue) },

    81

	{ "rx_long_length_errors", E1000_STAT(stats.roc) },

    82

	{ "rx_short_length_errors", E1000_STAT(stats.ruc) },

    83

	{ "rx_align_errors", E1000_STAT(stats.algnerrc) },

    84

	{ "tx_tcp_seg_good", E1000_STAT(stats.tsctc) },

    85

	{ "tx_tcp_seg_failed", E1000_STAT(stats.tsctfc) },

    86

	{ "rx_flow_control_xon", E1000_STAT(stats.xonrxc) },

    87

	{ "rx_flow_control_xoff", E1000_STAT(stats.xoffrxc) },

    88

	{ "tx_flow_control_xon", E1000_STAT(stats.xontxc) },

    89

	{ "tx_flow_control_xoff", E1000_STAT(stats.xofftxc) },

    90

	{ "rx_long_byte_count", E1000_STAT(stats.gorcl) },

    91

	{ "rx_csum_offload_good", E1000_STAT(hw_csum_good) },

    92

	{ "rx_csum_offload_errors", E1000_STAT(hw_csum_err) },

    93

	{ "alloc_rx_buff_failed", E1000_STAT(alloc_rx_buff_failed) },

    94

	{ "tx_smbus", E1000_STAT(stats.mgptc) },

    95

	{ "rx_smbus", E1000_STAT(stats.mgprc) },

    96

	{ "dropped_smbus", E1000_STAT(stats.mgpdc) },

    97

};

    98

    99

#define E1000_QUEUE_STATS_LEN 0

   100

#define E1000_GLOBAL_STATS_LEN ARRAY_SIZE(e1000_gstrings_stats)

   101

#define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN + E1000_QUEUE_STATS_LEN)

   102

static const char e1000_gstrings_test[][ETH_GSTRING_LEN] = {

   103

	"Register test  (offline)", "Eeprom test    (offline)",

   104

	"Interrupt test (offline)", "Loopback test  (offline)",

   105

	"Link test   (on/offline)"

   106

};

   107

#define E1000_TEST_LEN	ARRAY_SIZE(e1000_gstrings_test)

   108

   109

static int e1000_get_settings(struct net_device *netdev,

   110

			      struct ethtool_cmd *ecmd)

   111

{

   112

	struct e1000_adapter *adapter = netdev_priv(netdev);

   113

	struct e1000_hw *hw = &adapter->hw;

   114

   115

	if (hw->media_type == e1000_media_type_copper) {

   116

   117

		ecmd->supported = (SUPPORTED_10baseT_Half |

   118

		                   SUPPORTED_10baseT_Full |

   119

		                   SUPPORTED_100baseT_Half |

   120

		                   SUPPORTED_100baseT_Full |

   121

		                   SUPPORTED_1000baseT_Full|

   122

		                   SUPPORTED_Autoneg |

   123

		                   SUPPORTED_TP);

   124

		ecmd->advertising = ADVERTISED_TP;

   125

   126

		if (hw->autoneg == 1) {

   127

			ecmd->advertising |= ADVERTISED_Autoneg;

   128

			/* the e1000 autoneg seems to match ethtool nicely */

   129

			ecmd->advertising |= hw->autoneg_advertised;

   130

		}

   131

   132

		ecmd->port = PORT_TP;

   133

		ecmd->phy_address = hw->phy_addr;

   134

   135

		if (hw->mac_type == e1000_82543)

   136

			ecmd->transceiver = XCVR_EXTERNAL;

   137

		else

   138

			ecmd->transceiver = XCVR_INTERNAL;

   139

   140

	} else {

   141

		ecmd->supported   = (SUPPORTED_1000baseT_Full |

   142

				     SUPPORTED_FIBRE |

   143

				     SUPPORTED_Autoneg);

   144

   145

		ecmd->advertising = (ADVERTISED_1000baseT_Full |

   146

				     ADVERTISED_FIBRE |

   147

				     ADVERTISED_Autoneg);

   148

   149

		ecmd->port = PORT_FIBRE;

   150

   151

		if (hw->mac_type >= e1000_82545)

   152

			ecmd->transceiver = XCVR_INTERNAL;

   153

		else

   154

			ecmd->transceiver = XCVR_EXTERNAL;

   155

	}

   156

   157

	if (er32(STATUS) & E1000_STATUS_LU) {

   158

   159

		e1000_get_speed_and_duplex(hw, &adapter->link_speed,

   160

		                                   &adapter->link_duplex);

   161

		ethtool_cmd_speed_set(ecmd, adapter->link_speed);

   162

   163

		/* unfortunately FULL_DUPLEX != DUPLEX_FULL

   164

		 *          and HALF_DUPLEX != DUPLEX_HALF */

   165

   166

		if (adapter->link_duplex == FULL_DUPLEX)

   167

			ecmd->duplex = DUPLEX_FULL;

   168

		else

   169

			ecmd->duplex = DUPLEX_HALF;

   170

	} else {

   171

		ethtool_cmd_speed_set(ecmd, -1);

   172

		ecmd->duplex = -1;

   173

	}

   174

   175

	ecmd->autoneg = ((hw->media_type == e1000_media_type_fiber) ||

   176

			 hw->autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;

   177

	return 0;

   178

}

   179

   180

static int e1000_set_settings(struct net_device *netdev,

   181

			      struct ethtool_cmd *ecmd)

   182

{

   183

	struct e1000_adapter *adapter = netdev_priv(netdev);

   184

	struct e1000_hw *hw = &adapter->hw;

   185

   186

	while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))

   187

		msleep(1);

   188

   189

	if (ecmd->autoneg == AUTONEG_ENABLE) {

   190

		hw->autoneg = 1;

   191

		if (hw->media_type == e1000_media_type_fiber)

   192

			hw->autoneg_advertised = ADVERTISED_1000baseT_Full |

   193

				     ADVERTISED_FIBRE |

   194

				     ADVERTISED_Autoneg;

   195

		else

   196

			hw->autoneg_advertised = ecmd->advertising |

   197

			                         ADVERTISED_TP |

   198

			                         ADVERTISED_Autoneg;

   199

		ecmd->advertising = hw->autoneg_advertised;

   200

	} else {

   201

		u32 speed = ethtool_cmd_speed(ecmd);

   202

		if (e1000_set_spd_dplx(adapter, speed, ecmd->duplex)) {

   203

			clear_bit(__E1000_RESETTING, &adapter->flags);

   204

			return -EINVAL;

   205

		}

   206

	}

   207

   208

	/* reset the link */

   209

   210

	if (netif_running(adapter->netdev)) {

   211

		e1000_down(adapter);

   212

		e1000_up(adapter);

   213

	} else

   214

		e1000_reset(adapter);

   215

   216

	clear_bit(__E1000_RESETTING, &adapter->flags);

   217

	return 0;

   218

}

   219

   220

static u32 e1000_get_link(struct net_device *netdev)

   221

{

   222

	struct e1000_adapter *adapter = netdev_priv(netdev);

   223

   224

	/*

   225

	 * If the link is not reported up to netdev, interrupts are disabled,

   226

	 * and so the physical link state may have changed since we last

   227

	 * looked. Set get_link_status to make sure that the true link

   228

	 * state is interrogated, rather than pulling a cached and possibly

   229

	 * stale link state from the driver.

   230

	 */

   231

	if (!netif_carrier_ok(netdev))

   232

		adapter->hw.get_link_status = 1;

   233

   234

	return e1000_has_link(adapter);

   235

}

   236

   237

static void e1000_get_pauseparam(struct net_device *netdev,

   238

				 struct ethtool_pauseparam *pause)

   239

{

   240

	struct e1000_adapter *adapter = netdev_priv(netdev);

   241

	struct e1000_hw *hw = &adapter->hw;

   242

   243

	pause->autoneg =

   244

		(adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);

   245

   246

	if (hw->fc == E1000_FC_RX_PAUSE)

   247

		pause->rx_pause = 1;

   248

	else if (hw->fc == E1000_FC_TX_PAUSE)

   249

		pause->tx_pause = 1;

   250

	else if (hw->fc == E1000_FC_FULL) {

   251

		pause->rx_pause = 1;

   252

		pause->tx_pause = 1;

   253

	}

   254

}

   255

   256

static int e1000_set_pauseparam(struct net_device *netdev,

   257

				struct ethtool_pauseparam *pause)

   258

{

   259

	struct e1000_adapter *adapter = netdev_priv(netdev);

   260

	struct e1000_hw *hw = &adapter->hw;

   261

	int retval = 0;

   262

   263

	adapter->fc_autoneg = pause->autoneg;

   264

   265

	while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))

   266

		msleep(1);

   267

   268

	if (pause->rx_pause && pause->tx_pause)

   269

		hw->fc = E1000_FC_FULL;

   270

	else if (pause->rx_pause && !pause->tx_pause)

   271

		hw->fc = E1000_FC_RX_PAUSE;

   272

	else if (!pause->rx_pause && pause->tx_pause)

   273

		hw->fc = E1000_FC_TX_PAUSE;

   274

	else if (!pause->rx_pause && !pause->tx_pause)

   275

		hw->fc = E1000_FC_NONE;

   276

   277

	hw->original_fc = hw->fc;

   278

   279

	if (adapter->fc_autoneg == AUTONEG_ENABLE) {

   280

		if (netif_running(adapter->netdev)) {

   281

			e1000_down(adapter);

   282

			e1000_up(adapter);

   283

		} else

   284

			e1000_reset(adapter);

   285

	} else

   286

		retval = ((hw->media_type == e1000_media_type_fiber) ?

   287

			  e1000_setup_link(hw) : e1000_force_mac_fc(hw));

   288

   289

	clear_bit(__E1000_RESETTING, &adapter->flags);

   290

	return retval;

   291

}

   292

   293

static u32 e1000_get_rx_csum(struct net_device *netdev)

   294

{

   295

	struct e1000_adapter *adapter = netdev_priv(netdev);

   296

	return adapter->rx_csum;

   297

}

   298

   299

static int e1000_set_rx_csum(struct net_device *netdev, u32 data)

   300

{

   301

	struct e1000_adapter *adapter = netdev_priv(netdev);

   302

	adapter->rx_csum = data;

   303

   304

	if (netif_running(netdev))

   305

		e1000_reinit_locked(adapter);

   306

	else

   307

		e1000_reset(adapter);

   308

	return 0;

   309

}

   310

   311

static u32 e1000_get_tx_csum(struct net_device *netdev)

   312

{

   313

	return (netdev->features & NETIF_F_HW_CSUM) != 0;

   314

}

   315

   316

static int e1000_set_tx_csum(struct net_device *netdev, u32 data)

   317

{

   318

	struct e1000_adapter *adapter = netdev_priv(netdev);

   319

	struct e1000_hw *hw = &adapter->hw;

   320

   321

	if (hw->mac_type < e1000_82543) {

   322

		if (!data)

   323

			return -EINVAL;

   324

		return 0;

   325

	}

   326

   327

	if (data)

   328

		netdev->features |= NETIF_F_HW_CSUM;

   329

	else

   330

		netdev->features &= ~NETIF_F_HW_CSUM;

   331

   332

	return 0;

   333

}

   334

   335

static int e1000_set_tso(struct net_device *netdev, u32 data)

   336

{

   337

	struct e1000_adapter *adapter = netdev_priv(netdev);

   338

	struct e1000_hw *hw = &adapter->hw;

   339

   340

	if ((hw->mac_type < e1000_82544) ||

   341

	    (hw->mac_type == e1000_82547))

   342

		return data ? -EINVAL : 0;

   343

   344

	if (data)

   345

		netdev->features |= NETIF_F_TSO;

   346

	else

   347

		netdev->features &= ~NETIF_F_TSO;

   348

   349

	netdev->features &= ~NETIF_F_TSO6;

   350

   351

	e_info(probe, "TSO is %s\n", data ? "Enabled" : "Disabled");

   352

	adapter->tso_force = true;

   353

	return 0;

   354

}

   355

   356

static u32 e1000_get_msglevel(struct net_device *netdev)

   357

{

   358

	struct e1000_adapter *adapter = netdev_priv(netdev);

   359

	return adapter->msg_enable;

   360

}

   361

   362

static void e1000_set_msglevel(struct net_device *netdev, u32 data)

   363

{

   364

	struct e1000_adapter *adapter = netdev_priv(netdev);

   365

	adapter->msg_enable = data;

   366

}

   367

   368

static int e1000_get_regs_len(struct net_device *netdev)

   369

{

   370

#define E1000_REGS_LEN 32

   371

	return E1000_REGS_LEN * sizeof(u32);

   372

}

   373

   374

static void e1000_get_regs(struct net_device *netdev, struct ethtool_regs *regs,

   375

			   void *p)

   376

{

   377

	struct e1000_adapter *adapter = netdev_priv(netdev);

   378

	struct e1000_hw *hw = &adapter->hw;

   379

	u32 *regs_buff = p;

   380

	u16 phy_data;

   381

   382

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

   383

   384

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

   385

   386

	regs_buff[0]  = er32(CTRL);

   387

	regs_buff[1]  = er32(STATUS);

   388

   389

	regs_buff[2]  = er32(RCTL);

   390

	regs_buff[3]  = er32(RDLEN);

   391

	regs_buff[4]  = er32(RDH);

   392

	regs_buff[5]  = er32(RDT);

   393

	regs_buff[6]  = er32(RDTR);

   394

   395

	regs_buff[7]  = er32(TCTL);

   396

	regs_buff[8]  = er32(TDLEN);

   397

	regs_buff[9]  = er32(TDH);

   398

	regs_buff[10] = er32(TDT);

   399

	regs_buff[11] = er32(TIDV);

   400

   401

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

   402

	if (hw->phy_type == e1000_phy_igp) {

   403

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   404

				    IGP01E1000_PHY_AGC_A);

   405

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_A &

   406

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   407

		regs_buff[13] = (u32)phy_data; /* cable length */

   408

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   409

				    IGP01E1000_PHY_AGC_B);

   410

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_B &

   411

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   412

		regs_buff[14] = (u32)phy_data; /* cable length */

   413

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   414

				    IGP01E1000_PHY_AGC_C);

   415

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_C &

   416

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   417

		regs_buff[15] = (u32)phy_data; /* cable length */

   418

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   419

				    IGP01E1000_PHY_AGC_D);

   420

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_D &

   421

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   422

		regs_buff[16] = (u32)phy_data; /* cable length */

   423

		regs_buff[17] = 0; /* extended 10bt distance (not needed) */

   424

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT, 0x0);

   425

		e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS &

   426

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   427

		regs_buff[18] = (u32)phy_data; /* cable polarity */

   428

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   429

				    IGP01E1000_PHY_PCS_INIT_REG);

   430

		e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG &

   431

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   432

		regs_buff[19] = (u32)phy_data; /* cable polarity */

   433

		regs_buff[20] = 0; /* polarity correction enabled (always) */

   434

		regs_buff[22] = 0; /* phy receive errors (unavailable) */

   435

		regs_buff[23] = regs_buff[18]; /* mdix mode */

   436

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT, 0x0);

   437

	} else {

   438

		e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);

   439

		regs_buff[13] = (u32)phy_data; /* cable length */

   440

		regs_buff[14] = 0;  /* Dummy (to align w/ IGP phy reg dump) */

   441

		regs_buff[15] = 0;  /* Dummy (to align w/ IGP phy reg dump) */

   442

		regs_buff[16] = 0;  /* Dummy (to align w/ IGP phy reg dump) */

   443

		e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);

   444

		regs_buff[17] = (u32)phy_data; /* extended 10bt distance */

   445

		regs_buff[18] = regs_buff[13]; /* cable polarity */

   446

		regs_buff[19] = 0;  /* Dummy (to align w/ IGP phy reg dump) */

   447

		regs_buff[20] = regs_buff[17]; /* polarity correction */

   448

		/* phy receive errors */

   449

		regs_buff[22] = adapter->phy_stats.receive_errors;

   450

		regs_buff[23] = regs_buff[13]; /* mdix mode */

   451

	}

   452

	regs_buff[21] = adapter->phy_stats.idle_errors;  /* phy idle errors */

   453

	e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);

   454

	regs_buff[24] = (u32)phy_data;  /* phy local receiver status */

   455

	regs_buff[25] = regs_buff[24];  /* phy remote receiver status */

   456

	if (hw->mac_type >= e1000_82540 &&

   457

	    hw->media_type == e1000_media_type_copper) {

   458

		regs_buff[26] = er32(MANC);

   459

	}

   460

}

   461

   462

static int e1000_get_eeprom_len(struct net_device *netdev)

   463

{

   464

	struct e1000_adapter *adapter = netdev_priv(netdev);

   465

	struct e1000_hw *hw = &adapter->hw;

   466

   467

	return hw->eeprom.word_size * 2;

   468

}

   469

   470

static int e1000_get_eeprom(struct net_device *netdev,

   471

			    struct ethtool_eeprom *eeprom, u8 *bytes)

   472

{

   473

	struct e1000_adapter *adapter = netdev_priv(netdev);

   474

	struct e1000_hw *hw = &adapter->hw;

   475

	u16 *eeprom_buff;

   476

	int first_word, last_word;

   477

	int ret_val = 0;

   478

	u16 i;

   479

   480

	if (eeprom->len == 0)

   481

		return -EINVAL;

   482

   483

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

   484

   485

	first_word = eeprom->offset >> 1;

   486

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

   487

   488

	eeprom_buff = kmalloc(sizeof(u16) *

   489

			(last_word - first_word + 1), GFP_KERNEL);

   490

	if (!eeprom_buff)

   491

		return -ENOMEM;

   492

   493

	if (hw->eeprom.type == e1000_eeprom_spi)

   494

		ret_val = e1000_read_eeprom(hw, first_word,

   495

					    last_word - first_word + 1,

   496

					    eeprom_buff);

   497

	else {

   498

		for (i = 0; i < last_word - first_word + 1; i++) {

   499

			ret_val = e1000_read_eeprom(hw, first_word + i, 1,

   500

						    &eeprom_buff[i]);

   501

			if (ret_val)

   502

				break;

   503

		}

   504

	}

   505

   506

	/* Device's eeprom is always little-endian, word addressable */

   507

	for (i = 0; i < last_word - first_word + 1; i++)

   508

		le16_to_cpus(&eeprom_buff[i]);

   509

   510

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

   511

			eeprom->len);

   512

	kfree(eeprom_buff);

   513

   514

	return ret_val;

   515

}

   516

   517

static int e1000_set_eeprom(struct net_device *netdev,

   518

			    struct ethtool_eeprom *eeprom, u8 *bytes)

   519

{

   520

	struct e1000_adapter *adapter = netdev_priv(netdev);

   521

	struct e1000_hw *hw = &adapter->hw;

   522

	u16 *eeprom_buff;

   523

	void *ptr;

   524

	int max_len, first_word, last_word, ret_val = 0;

   525

	u16 i;

   526

   527

	if (eeprom->len == 0)

   528

		return -EOPNOTSUPP;

   529

   530