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

     2

     3

  Intel PRO/1000 Linux driver

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  Copyright(c) 1999 - 2006 Intel Corporation.

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

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

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  version 2, as published by the Free Software Foundation.

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

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  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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

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  more details.

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

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

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

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

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  the file called "COPYING".

    21

    22

  Contact Information:

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  Linux NICS <linux.nics@intel.com>

    24

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

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

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

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/* ethtool support for e1000 */

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    31

#include "e1000.h"

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    33

#include <asm/uaccess.h>

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    35

extern char e1000_driver_name[];

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extern char e1000_driver_version[];

    37

    38

extern int e1000_up(struct e1000_adapter *adapter);

    39

extern void e1000_down(struct e1000_adapter *adapter);

    40

extern void e1000_reinit_locked(struct e1000_adapter *adapter);

    41

extern void e1000_reset(struct e1000_adapter *adapter);

    42

extern int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);

    43

extern int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);

    44

extern int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);

    45

extern void e1000_free_all_rx_resources(struct e1000_adapter *adapter);

    46

extern void e1000_free_all_tx_resources(struct e1000_adapter *adapter);

    47

extern void e1000_update_stats(struct e1000_adapter *adapter);

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    49

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struct e1000_stats {

    51

	char stat_string[ETH_GSTRING_LEN];

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	int sizeof_stat;

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	int stat_offset;

    54

};

    55

    56

#define E1000_STAT(m) sizeof(((struct e1000_adapter *)0)->m), \

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		      offsetof(struct e1000_adapter, m)

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static const struct e1000_stats e1000_gstrings_stats[] = {

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

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

    61

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

    62

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

    63

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

    64

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

    65

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

    66

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

    67

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

    68

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

    69

	{ "tx_dropped", E1000_STAT(net_stats.tx_dropped) },

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

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

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

    73

	{ "rx_over_errors", E1000_STAT(net_stats.rx_over_errors) },

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

    75

	{ "rx_frame_errors", E1000_STAT(net_stats.rx_frame_errors) },

    76

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

    77

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

    78

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

    79

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

    80

	{ "tx_fifo_errors", E1000_STAT(net_stats.tx_fifo_errors) },

    81

	{ "tx_heartbeat_errors", E1000_STAT(net_stats.tx_heartbeat_errors) },

    82

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

    83

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

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

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

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

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	{ "tx_timeout_count", E1000_STAT(tx_timeout_count) },

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	{ "tx_restart_queue", E1000_STAT(restart_queue) },

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

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

    91

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

    92

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

    93

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

    94

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

    95

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

    96

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

    97

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

    98

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

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	{ "rx_csum_offload_good", E1000_STAT(hw_csum_good) },

   100

	{ "rx_csum_offload_errors", E1000_STAT(hw_csum_err) },

   101

	{ "rx_header_split", E1000_STAT(rx_hdr_split) },

   102

	{ "alloc_rx_buff_failed", E1000_STAT(alloc_rx_buff_failed) },

   103

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

   104

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

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

   106

};

   107

   108

#define E1000_QUEUE_STATS_LEN 0

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#define E1000_GLOBAL_STATS_LEN	\

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	sizeof(e1000_gstrings_stats) / sizeof(struct e1000_stats)

   111

#define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN + E1000_QUEUE_STATS_LEN)

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static const char e1000_gstrings_test[][ETH_GSTRING_LEN] = {

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

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

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	"Link test   (on/offline)"

   116

};

   117

#define E1000_TEST_LEN sizeof(e1000_gstrings_test) / ETH_GSTRING_LEN

   118

   119

static int

   120

e1000_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)

   121

{

   122

	struct e1000_adapter *adapter = netdev_priv(netdev);

   123

	struct e1000_hw *hw = &adapter->hw;

   124

   125

	if (hw->media_type == e1000_media_type_copper) {

   126

   127

		ecmd->supported = (SUPPORTED_10baseT_Half |

   128

		                   SUPPORTED_10baseT_Full |

   129

		                   SUPPORTED_100baseT_Half |

   130

		                   SUPPORTED_100baseT_Full |

   131

		                   SUPPORTED_1000baseT_Full|

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		                   SUPPORTED_Autoneg |

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		                   SUPPORTED_TP);

   134

		if (hw->phy_type == e1000_phy_ife)

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			ecmd->supported &= ~SUPPORTED_1000baseT_Full;

   136

		ecmd->advertising = ADVERTISED_TP;

   137

   138

		if (hw->autoneg == 1) {

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			ecmd->advertising |= ADVERTISED_Autoneg;

   140

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

   141

			ecmd->advertising |= hw->autoneg_advertised;

   142

		}

   143

   144

		ecmd->port = PORT_TP;

   145

		ecmd->phy_address = hw->phy_addr;

   146

   147

		if (hw->mac_type == e1000_82543)

   148

			ecmd->transceiver = XCVR_EXTERNAL;

   149

		else

   150

			ecmd->transceiver = XCVR_INTERNAL;

   151

   152

	} else {

   153

		ecmd->supported   = (SUPPORTED_1000baseT_Full |

   154

				     SUPPORTED_FIBRE |

   155

				     SUPPORTED_Autoneg);

   156

   157

		ecmd->advertising = (ADVERTISED_1000baseT_Full |

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				     ADVERTISED_FIBRE |

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				     ADVERTISED_Autoneg);

   160

   161

		ecmd->port = PORT_FIBRE;

   162

   163

		if (hw->mac_type >= e1000_82545)

   164

			ecmd->transceiver = XCVR_INTERNAL;

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		else

   166

			ecmd->transceiver = XCVR_EXTERNAL;

   167

	}

   168

   169

	if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU) {

   170

   171

		e1000_get_speed_and_duplex(hw, &adapter->link_speed,

   172

		                                   &adapter->link_duplex);

   173

		ecmd->speed = adapter->link_speed;

   174

   175

		/* unfortunatly FULL_DUPLEX != DUPLEX_FULL

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		 *          and HALF_DUPLEX != DUPLEX_HALF */

   177

   178

		if (adapter->link_duplex == FULL_DUPLEX)

   179

			ecmd->duplex = DUPLEX_FULL;

   180

		else

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			ecmd->duplex = DUPLEX_HALF;

   182

	} else {

   183

		ecmd->speed = -1;

   184

		ecmd->duplex = -1;

   185

	}

   186

   187

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

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			 hw->autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;

   189

	return 0;

   190

}

   191

   192

static int

   193

e1000_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)

   194

{

   195

	struct e1000_adapter *adapter = netdev_priv(netdev);

   196

	struct e1000_hw *hw = &adapter->hw;

   197

   198

	/* When SoL/IDER sessions are active, autoneg/speed/duplex

   199

	 * cannot be changed */

   200

	if (e1000_check_phy_reset_block(hw)) {

   201

		DPRINTK(DRV, ERR, "Cannot change link characteristics "

   202

		        "when SoL/IDER is active.\n");

   203

		return -EINVAL;

   204

	}

   205

   206

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

   207

		msleep(1);

   208

   209

	if (ecmd->autoneg == AUTONEG_ENABLE) {

   210

		hw->autoneg = 1;

   211

		if (hw->media_type == e1000_media_type_fiber)

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			hw->autoneg_advertised = ADVERTISED_1000baseT_Full |

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				     ADVERTISED_FIBRE |

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				     ADVERTISED_Autoneg;

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		else

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			hw->autoneg_advertised = ecmd->advertising |

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			                         ADVERTISED_TP |

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			                         ADVERTISED_Autoneg;

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		ecmd->advertising = hw->autoneg_advertised;

   220

	} else

   221

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

   222

			clear_bit(__E1000_RESETTING, &adapter->flags);

   223

			return -EINVAL;

   224

		}

   225

   226

	/* reset the link */

   227

   228

	if (netif_running(adapter->netdev)) {

   229

		e1000_down(adapter);

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		e1000_up(adapter);

   231

	} else

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		e1000_reset(adapter);

   233

   234

	clear_bit(__E1000_RESETTING, &adapter->flags);

   235

	return 0;

   236

}

   237

   238

static void

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e1000_get_pauseparam(struct net_device *netdev,

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                     struct ethtool_pauseparam *pause)

   241

{

   242

	struct e1000_adapter *adapter = netdev_priv(netdev);

   243

	struct e1000_hw *hw = &adapter->hw;

   244

   245

	pause->autoneg =

   246

		(adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);

   247

   248

	if (hw->fc == E1000_FC_RX_PAUSE)

   249

		pause->rx_pause = 1;

   250

	else if (hw->fc == E1000_FC_TX_PAUSE)

   251

		pause->tx_pause = 1;

   252

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

   253

		pause->rx_pause = 1;

   254

		pause->tx_pause = 1;

   255

	}

   256

}

   257

   258

static int

   259

e1000_set_pauseparam(struct net_device *netdev,

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                     struct ethtool_pauseparam *pause)

   261

{

   262

	struct e1000_adapter *adapter = netdev_priv(netdev);

   263

	struct e1000_hw *hw = &adapter->hw;

   264

	int retval = 0;

   265

   266

	adapter->fc_autoneg = pause->autoneg;

   267

   268

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

   269

		msleep(1);

   270

   271

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

   272

		hw->fc = E1000_FC_FULL;

   273

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

   274

		hw->fc = E1000_FC_RX_PAUSE;

   275

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

   276

		hw->fc = E1000_FC_TX_PAUSE;

   277

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

   278

		hw->fc = E1000_FC_NONE;

   279

   280

	hw->original_fc = hw->fc;

   281

   282

	if (adapter->fc_autoneg == AUTONEG_ENABLE) {

   283

		if (netif_running(adapter->netdev)) {

   284

			e1000_down(adapter);

   285

			e1000_up(adapter);

   286

		} else

   287

			e1000_reset(adapter);

   288

	} else

   289

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

   290

			  e1000_setup_link(hw) : e1000_force_mac_fc(hw));

   291

   292

	clear_bit(__E1000_RESETTING, &adapter->flags);

   293

	return retval;

   294

}

   295

   296

static uint32_t

   297

e1000_get_rx_csum(struct net_device *netdev)

   298

{

   299

	struct e1000_adapter *adapter = netdev_priv(netdev);

   300

	return adapter->rx_csum;

   301

}

   302

   303

static int

   304

e1000_set_rx_csum(struct net_device *netdev, uint32_t data)

   305

{

   306

	struct e1000_adapter *adapter = netdev_priv(netdev);

   307

	adapter->rx_csum = data;

   308

   309

	if (netif_running(netdev))

   310

		e1000_reinit_locked(adapter);

   311

	else

   312

		e1000_reset(adapter);

   313

	return 0;

   314

}

   315

   316

static uint32_t

   317

e1000_get_tx_csum(struct net_device *netdev)

   318

{

   319

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

   320

}

   321

   322

static int

   323

e1000_set_tx_csum(struct net_device *netdev, uint32_t data)

   324

{

   325

	struct e1000_adapter *adapter = netdev_priv(netdev);

   326

   327

	if (adapter->hw.mac_type < e1000_82543) {

   328

		if (!data)

   329

			return -EINVAL;

   330

		return 0;

   331

	}

   332

   333

	if (data)

   334

		netdev->features |= NETIF_F_HW_CSUM;

   335

	else

   336

		netdev->features &= ~NETIF_F_HW_CSUM;

   337

   338

	return 0;

   339

}

   340

   341

static int

   342

e1000_set_tso(struct net_device *netdev, uint32_t data)

   343

{

   344

	struct e1000_adapter *adapter = netdev_priv(netdev);

   345

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

   346

	    (adapter->hw.mac_type == e1000_82547))

   347

		return data ? -EINVAL : 0;

   348

   349

	if (data)

   350

		netdev->features |= NETIF_F_TSO;

   351

	else

   352

		netdev->features &= ~NETIF_F_TSO;

   353

   354

	if (data)

   355

		netdev->features |= NETIF_F_TSO6;

   356

	else

   357

		netdev->features &= ~NETIF_F_TSO6;

   358

   359

	DPRINTK(PROBE, INFO, "TSO is %s\n", data ? "Enabled" : "Disabled");

   360

	adapter->tso_force = TRUE;

   361

	return 0;

   362

}

   363

   364

static uint32_t

   365

e1000_get_msglevel(struct net_device *netdev)

   366

{

   367

	struct e1000_adapter *adapter = netdev_priv(netdev);

   368

	return adapter->msg_enable;

   369

}

   370

   371

static void

   372

e1000_set_msglevel(struct net_device *netdev, uint32_t data)

   373

{

   374

	struct e1000_adapter *adapter = netdev_priv(netdev);

   375

	adapter->msg_enable = data;

   376

}

   377

   378

static int

   379

e1000_get_regs_len(struct net_device *netdev)

   380

{

   381

#define E1000_REGS_LEN 32

   382

	return E1000_REGS_LEN * sizeof(uint32_t);

   383

}

   384

   385

static void

   386

e1000_get_regs(struct net_device *netdev,

   387

	       struct ethtool_regs *regs, void *p)

   388

{

   389

	struct e1000_adapter *adapter = netdev_priv(netdev);

   390

	struct e1000_hw *hw = &adapter->hw;

   391

	uint32_t *regs_buff = p;

   392

	uint16_t phy_data;

   393

   394

	memset(p, 0, E1000_REGS_LEN * sizeof(uint32_t));

   395

   396

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

   397

   398

	regs_buff[0]  = E1000_READ_REG(hw, CTRL);

   399

	regs_buff[1]  = E1000_READ_REG(hw, STATUS);

   400

   401

	regs_buff[2]  = E1000_READ_REG(hw, RCTL);

   402

	regs_buff[3]  = E1000_READ_REG(hw, RDLEN);

   403

	regs_buff[4]  = E1000_READ_REG(hw, RDH);

   404

	regs_buff[5]  = E1000_READ_REG(hw, RDT);

   405

	regs_buff[6]  = E1000_READ_REG(hw, RDTR);

   406

   407

	regs_buff[7]  = E1000_READ_REG(hw, TCTL);

   408

	regs_buff[8]  = E1000_READ_REG(hw, TDLEN);

   409

	regs_buff[9]  = E1000_READ_REG(hw, TDH);

   410

	regs_buff[10] = E1000_READ_REG(hw, TDT);

   411

	regs_buff[11] = E1000_READ_REG(hw, TIDV);

   412

   413

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

   414

	if (hw->phy_type == e1000_phy_igp) {

   415

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   416

				    IGP01E1000_PHY_AGC_A);

   417

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_A &

   418

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   419

		regs_buff[13] = (uint32_t)phy_data; /* cable length */

   420

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   421

				    IGP01E1000_PHY_AGC_B);

   422

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_B &

   423

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   424

		regs_buff[14] = (uint32_t)phy_data; /* cable length */

   425

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   426

				    IGP01E1000_PHY_AGC_C);

   427

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_C &

   428

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   429

		regs_buff[15] = (uint32_t)phy_data; /* cable length */

   430

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   431

				    IGP01E1000_PHY_AGC_D);

   432

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_D &

   433

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   434

		regs_buff[16] = (uint32_t)phy_data; /* cable length */

   435

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

   436

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT, 0x0);

   437

		e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS &

   438

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   439

		regs_buff[18] = (uint32_t)phy_data; /* cable polarity */

   440

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   441

				    IGP01E1000_PHY_PCS_INIT_REG);

   442

		e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG &

   443

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   444

		regs_buff[19] = (uint32_t)phy_data; /* cable polarity */

   445

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

   446

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

   447

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

   448

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT, 0x0);

   449

	} else {

   450

		e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);

   451

		regs_buff[13] = (uint32_t)phy_data; /* cable length */

   452

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

   453

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

   454

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

   455

		e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);

   456

		regs_buff[17] = (uint32_t)phy_data; /* extended 10bt distance */

   457

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

   458

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

   459

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

   460

		/* phy receive errors */

   461

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

   462

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

   463

	}

   464

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

   465

	e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);

   466

	regs_buff[24] = (uint32_t)phy_data;  /* phy local receiver status */

   467

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

   468

	if (hw->mac_type >= e1000_82540 &&

   469

	    hw->mac_type < e1000_82571 &&

   470

	    hw->media_type == e1000_media_type_copper) {

   471

		regs_buff[26] = E1000_READ_REG(hw, MANC);

   472

	}

   473

}

   474

   475

static int

   476

e1000_get_eeprom_len(struct net_device *netdev)

   477

{

   478

	struct e1000_adapter *adapter = netdev_priv(netdev);

   479

	return adapter->hw.eeprom.word_size * 2;

   480

}

   481

   482

static int

   483

e1000_get_eeprom(struct net_device *netdev,

   484

                      struct ethtool_eeprom *eeprom, uint8_t *bytes)

   485

{

   486

	struct e1000_adapter *adapter = netdev_priv(netdev);

   487

	struct e1000_hw *hw = &adapter->hw;

   488

	uint16_t *eeprom_buff;

   489

	int first_word, last_word;

   490

	int ret_val = 0;

   491

	uint16_t i;

   492

   493

	if (eeprom->len == 0)

   494

		return -EINVAL;

   495

   496

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

   497

   498

	first_word = eeprom->offset >> 1;

   499

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

   500

   501

	eeprom_buff = kmalloc(sizeof(uint16_t) *

   502

			(last_word - first_word + 1), GFP_KERNEL);

   503

	if (!eeprom_buff)

   504

		return -ENOMEM;

   505

   506

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

   507

		ret_val = e1000_read_eeprom(hw, first_word,

   508

					    last_word - first_word + 1,

   509

					    eeprom_buff);

   510

	else {

   511

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

   512

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

   513

							&eeprom_buff[i])))

   514

				break;

   515

	}

   516

   517

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

   518

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

   519

		le16_to_cpus(&eeprom_buff[i]);

   520

   521

	memcpy(bytes, (uint8_t *)eeprom_buff + (eeprom->offset & 1),

   522

			eeprom->len);

   523

	kfree(eeprom_buff);

   524

   525

	return ret_val;

   526

}

   527

   528

static int

   529

e1000_set_eeprom(struct net_device *netdev,