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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,

     8

  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:

    23

  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 */

    30

    31

#include "e1000-2.6.29-ethercat.h"

    32

#include <asm/uaccess.h>

    33

    34

struct e1000_stats {

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	char stat_string[ETH_GSTRING_LEN];

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	int sizeof_stat;

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	int stat_offset;

    38

};

    39

    40

#define E1000_STAT(m) FIELD_SIZEOF(struct e1000_adapter, m), \

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		      offsetof(struct e1000_adapter, m)

    42

static const struct e1000_stats e1000_gstrings_stats[] = {

    43

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

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

    45

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

    46

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

    47

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

    48

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

    49

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

    50

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

    51

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

    52

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

    53

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

    54

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

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

    56

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

    57

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

    58

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

    59

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

    60

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

    61

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

    62

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

    63

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

    64

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

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

    66

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

    67

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

    68

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

    69

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

    70

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

    71

	{ "tx_timeout_count", E1000_STAT(tx_timeout_count) },

    72

	{ "tx_restart_queue", E1000_STAT(restart_queue) },

    73

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

    74

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

    75

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

    76

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

    77

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

    78

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

    79

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

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

    81

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

    82

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

    83

	{ "rx_csum_offload_good", E1000_STAT(hw_csum_good) },

    84

	{ "rx_csum_offload_errors", E1000_STAT(hw_csum_err) },

    85

	{ "rx_header_split", E1000_STAT(rx_hdr_split) },

    86

	{ "alloc_rx_buff_failed", E1000_STAT(alloc_rx_buff_failed) },

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

    88

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

    89

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

    90

};

    91

    92

#define E1000_QUEUE_STATS_LEN 0

    93

#define E1000_GLOBAL_STATS_LEN ARRAY_SIZE(e1000_gstrings_stats)

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#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)"

    99

};

   100

#define E1000_TEST_LEN	ARRAY_SIZE(e1000_gstrings_test)

   101

   102

static int e1000_get_settings(struct net_device *netdev,

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			      struct ethtool_cmd *ecmd)

   104

{

   105

	struct e1000_adapter *adapter = netdev_priv(netdev);

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	struct e1000_hw *hw = &adapter->hw;

   107

   108

	if (hw->media_type == e1000_media_type_copper) {

   109

   110

		ecmd->supported = (SUPPORTED_10baseT_Half |

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		                   SUPPORTED_10baseT_Full |

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		                   SUPPORTED_100baseT_Half |

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		                   SUPPORTED_100baseT_Full |

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		                   SUPPORTED_1000baseT_Full|

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		                   SUPPORTED_Autoneg |

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		                   SUPPORTED_TP);

   117

		if (hw->phy_type == e1000_phy_ife)

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			ecmd->supported &= ~SUPPORTED_1000baseT_Full;

   119

		ecmd->advertising = ADVERTISED_TP;

   120

   121

		if (hw->autoneg == 1) {

   122

			ecmd->advertising |= ADVERTISED_Autoneg;

   123

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

   124

			ecmd->advertising |= hw->autoneg_advertised;

   125

		}

   126

   127

		ecmd->port = PORT_TP;

   128

		ecmd->phy_address = hw->phy_addr;

   129

   130

		if (hw->mac_type == e1000_82543)

   131

			ecmd->transceiver = XCVR_EXTERNAL;

   132

		else

   133

			ecmd->transceiver = XCVR_INTERNAL;

   134

   135

	} else {

   136

		ecmd->supported   = (SUPPORTED_1000baseT_Full |

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				     SUPPORTED_FIBRE |

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				     SUPPORTED_Autoneg);

   139

   140

		ecmd->advertising = (ADVERTISED_1000baseT_Full |

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				     ADVERTISED_FIBRE |

   142

				     ADVERTISED_Autoneg);

   143

   144

		ecmd->port = PORT_FIBRE;

   145

   146

		if (hw->mac_type >= e1000_82545)

   147

			ecmd->transceiver = XCVR_INTERNAL;

   148

		else

   149

			ecmd->transceiver = XCVR_EXTERNAL;

   150

	}

   151

   152

	if (er32(STATUS) & E1000_STATUS_LU) {

   153

   154

		e1000_get_speed_and_duplex(hw, &adapter->link_speed,

   155

		                                   &adapter->link_duplex);

   156

		ecmd->speed = adapter->link_speed;

   157

   158

		/* unfortunatly FULL_DUPLEX != DUPLEX_FULL

   159

		 *          and HALF_DUPLEX != DUPLEX_HALF */

   160

   161

		if (adapter->link_duplex == FULL_DUPLEX)

   162

			ecmd->duplex = DUPLEX_FULL;

   163

		else

   164

			ecmd->duplex = DUPLEX_HALF;

   165

	} else {

   166

		ecmd->speed = -1;

   167

		ecmd->duplex = -1;

   168

	}

   169

   170

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

   171

			 hw->autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;

   172

	return 0;

   173

}

   174

   175

static int e1000_set_settings(struct net_device *netdev,

   176

			      struct ethtool_cmd *ecmd)

   177

{

   178

	struct e1000_adapter *adapter = netdev_priv(netdev);

   179

	struct e1000_hw *hw = &adapter->hw;

   180

   181

	if (adapter->ecdev)

   182

		return -EBUSY;

   183

   184

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

   185

	 * cannot be changed */

   186

	if (e1000_check_phy_reset_block(hw)) {

   187

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

   188

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

   189

		return -EINVAL;

   190

	}

   191

   192

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

   193

		msleep(1);

   194

   195

	if (ecmd->autoneg == AUTONEG_ENABLE) {

   196

		hw->autoneg = 1;

   197

		if (hw->media_type == e1000_media_type_fiber)

   198

			hw->autoneg_advertised = ADVERTISED_1000baseT_Full |

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				     ADVERTISED_FIBRE |

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				     ADVERTISED_Autoneg;

   201

		else

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			hw->autoneg_advertised = ecmd->advertising |

   203

			                         ADVERTISED_TP |

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			                         ADVERTISED_Autoneg;

   205

		ecmd->advertising = hw->autoneg_advertised;

   206

	} else

   207

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

   208

			clear_bit(__E1000_RESETTING, &adapter->flags);

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			return -EINVAL;

   210

		}

   211

   212

	/* reset the link */

   213

   214

	if (netif_running(adapter->netdev)) {

   215

		e1000_down(adapter);

   216

		e1000_up(adapter);

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	} else

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		e1000_reset(adapter);

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	clear_bit(__E1000_RESETTING, &adapter->flags);

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	return 0;

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}

   223

   224

static void e1000_get_pauseparam(struct net_device *netdev,

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				 struct ethtool_pauseparam *pause)

   226

{

   227

	struct e1000_adapter *adapter = netdev_priv(netdev);

   228

	struct e1000_hw *hw = &adapter->hw;

   229

   230

	pause->autoneg =

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		(adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);

   232

   233

	if (hw->fc == E1000_FC_RX_PAUSE)

   234

		pause->rx_pause = 1;

   235

	else if (hw->fc == E1000_FC_TX_PAUSE)

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		pause->tx_pause = 1;

   237

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

   238

		pause->rx_pause = 1;

   239

		pause->tx_pause = 1;

   240

	}

   241

}

   242

   243

static int e1000_set_pauseparam(struct net_device *netdev,

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				struct ethtool_pauseparam *pause)

   245

{

   246

	struct e1000_adapter *adapter = netdev_priv(netdev);

   247

	struct e1000_hw *hw = &adapter->hw;

   248

	int retval = 0;

   249

   250

	if (adapter->ecdev)

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		return -EBUSY;

   252

   253

	adapter->fc_autoneg = pause->autoneg;

   254

   255

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

   256

		msleep(1);

   257

   258

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

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		hw->fc = E1000_FC_FULL;

   260

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

   261

		hw->fc = E1000_FC_RX_PAUSE;

   262

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

   263

		hw->fc = E1000_FC_TX_PAUSE;

   264

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

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		hw->fc = E1000_FC_NONE;

   266

   267

	hw->original_fc = hw->fc;

   268

   269

	if (adapter->fc_autoneg == AUTONEG_ENABLE) {

   270

		if (netif_running(adapter->netdev)) {

   271

			e1000_down(adapter);

   272

			e1000_up(adapter);

   273

		} else

   274

			e1000_reset(adapter);

   275

	} else

   276

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

   277

			  e1000_setup_link(hw) : e1000_force_mac_fc(hw));

   278

   279

	clear_bit(__E1000_RESETTING, &adapter->flags);

   280

	return retval;

   281

}

   282

   283

static u32 e1000_get_rx_csum(struct net_device *netdev)

   284

{

   285

	struct e1000_adapter *adapter = netdev_priv(netdev);

   286

	return adapter->rx_csum;

   287

}

   288

   289

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

   290

{

   291

	struct e1000_adapter *adapter = netdev_priv(netdev);

   292

   293

	if (adapter->ecdev)

   294

		return -EBUSY;

   295

   296

	adapter->rx_csum = data;

   297

   298

	if (netif_running(netdev))

   299

		e1000_reinit_locked(adapter);

   300

	else

   301

		e1000_reset(adapter);

   302

	return 0;

   303

}

   304

   305

static u32 e1000_get_tx_csum(struct net_device *netdev)

   306

{

   307

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

   308

}

   309

   310

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

   311

{

   312

	struct e1000_adapter *adapter = netdev_priv(netdev);

   313

	struct e1000_hw *hw = &adapter->hw;

   314

   315

	if (hw->mac_type < e1000_82543) {

   316

		if (!data)

   317

			return -EINVAL;

   318

		return 0;

   319

	}

   320

   321

	if (data)

   322

		netdev->features |= NETIF_F_HW_CSUM;

   323

	else

   324

		netdev->features &= ~NETIF_F_HW_CSUM;

   325

   326

	return 0;

   327

}

   328

   329

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

   330

{

   331

	struct e1000_adapter *adapter = netdev_priv(netdev);

   332

	struct e1000_hw *hw = &adapter->hw;

   333

   334

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

   335

	    (hw->mac_type == e1000_82547))

   336

		return data ? -EINVAL : 0;

   337

   338

	if (data)

   339

		netdev->features |= NETIF_F_TSO;

   340

	else

   341

		netdev->features &= ~NETIF_F_TSO;

   342

   343

	if (data && (adapter->hw.mac_type > e1000_82547_rev_2))

   344

		netdev->features |= NETIF_F_TSO6;

   345

	else

   346

		netdev->features &= ~NETIF_F_TSO6;

   347

   348

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

   349

	adapter->tso_force = true;

   350

	return 0;

   351

}

   352

   353

static u32 e1000_get_msglevel(struct net_device *netdev)

   354

{

   355

	struct e1000_adapter *adapter = netdev_priv(netdev);

   356

	return adapter->msg_enable;

   357

}

   358

   359

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

   360

{

   361

	struct e1000_adapter *adapter = netdev_priv(netdev);

   362

	adapter->msg_enable = data;

   363

}

   364

   365

static int e1000_get_regs_len(struct net_device *netdev)

   366

{

   367

#define E1000_REGS_LEN 32

   368

	return E1000_REGS_LEN * sizeof(u32);

   369

}

   370

   371

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

   372

			   void *p)

   373

{

   374

	struct e1000_adapter *adapter = netdev_priv(netdev);

   375

	struct e1000_hw *hw = &adapter->hw;

   376

	u32 *regs_buff = p;

   377

	u16 phy_data;

   378

   379

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

   380

   381

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

   382

   383

	regs_buff[0]  = er32(CTRL);

   384

	regs_buff[1]  = er32(STATUS);

   385

   386

	regs_buff[2]  = er32(RCTL);

   387

	regs_buff[3]  = er32(RDLEN);

   388

	regs_buff[4]  = er32(RDH);

   389

	regs_buff[5]  = er32(RDT);

   390

	regs_buff[6]  = er32(RDTR);

   391

   392

	regs_buff[7]  = er32(TCTL);

   393

	regs_buff[8]  = er32(TDLEN);

   394

	regs_buff[9]  = er32(TDH);

   395

	regs_buff[10] = er32(TDT);

   396

	regs_buff[11] = er32(TIDV);

   397

   398

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

   399

	if (hw->phy_type == e1000_phy_igp) {

   400

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   401

				    IGP01E1000_PHY_AGC_A);

   402

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_A &

   403

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   404

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

   405

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   406

				    IGP01E1000_PHY_AGC_B);

   407

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_B &

   408

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   409

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

   410

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   411

				    IGP01E1000_PHY_AGC_C);

   412

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_C &

   413

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   414

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

   415

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   416

				    IGP01E1000_PHY_AGC_D);

   417

		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_D &

   418

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   419

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

   420

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

   421

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT, 0x0);

   422

		e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS &

   423

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   424

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

   425

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,

   426

				    IGP01E1000_PHY_PCS_INIT_REG);

   427

		e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG &

   428

				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);

   429

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

   430

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

   431

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

   432

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

   433

		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT, 0x0);

   434

	} else {

   435

		e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);

   436

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

   437

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

   438

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

   439

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

   440

		e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);

   441

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

   442

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

   443

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

   444

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

   445

		/* phy receive errors */

   446

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

   447

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

   448

	}

   449

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

   450

	e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);

   451

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

   452

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

   453

	if (hw->mac_type >= e1000_82540 &&

   454

	    hw->mac_type < e1000_82571 &&

   455

	    hw->media_type == e1000_media_type_copper) {

   456

		regs_buff[26] = er32(MANC);

   457

	}

   458

}

   459

   460

static int e1000_get_eeprom_len(struct net_device *netdev)

   461

{

   462

	struct e1000_adapter *adapter = netdev_priv(netdev);

   463

	struct e1000_hw *hw = &adapter->hw;

   464

   465

	return hw->eeprom.word_size * 2;

   466

}

   467

   468

static int e1000_get_eeprom(struct net_device *netdev,

   469

			    struct ethtool_eeprom *eeprom, u8 *bytes)

   470

{

   471

	struct e1000_adapter *adapter = netdev_priv(netdev);

   472

	struct e1000_hw *hw = &adapter->hw;

   473

	u16 *eeprom_buff;

   474

	int first_word, last_word;

   475

	int ret_val = 0;

   476

	u16 i;

   477

   478

	if (eeprom->len == 0)

   479

		return -EINVAL;

   480

   481

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

   482

   483

	first_word = eeprom->offset >> 1;

   484

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

   485

   486

	eeprom_buff = kmalloc(sizeof(u16) *

   487

			(last_word - first_word + 1), GFP_KERNEL);

   488

	if (!eeprom_buff)

   489

		return -ENOMEM;

   490

   491

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

   492

		ret_val = e1000_read_eeprom(hw, first_word,

   493

					    last_word - first_word + 1,

   494

					    eeprom_buff);

   495

	else {

   496

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

   497

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

   498

						    &eeprom_buff[i]);

   499

			if (ret_val)

   500

				break;

   501

		}

   502

	}

   503

   504

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

   505

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

   506

		le16_to_cpus(&eeprom_buff[i]);

   507

   508

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

   509

			eeprom->len);

   510

	kfree(eeprom_buff);

   511

   512

	return ret_val;

   513

}

   514

   515

static int e1000_set_eeprom(struct net_device *netdev,

   516

			    struct ethtool_eeprom *eeprom, u8 *bytes)

   517

{

   518

	struct e1000_adapter *adapter = netdev_priv(netdev);

   519

	struct e1000_hw *hw = &adapter->hw;

   520

	u16 *eeprom_buff;

   521

	void *ptr;

   522

	int max_len, first_word, last_word, ret_val = 0;

   523

	u16 i;

   524

   525

	if (eeprom->len == 0)

   526

		return -EOPNOTSUPP;

   527

   528

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

   529

		return -EFAULT;

   530