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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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    15

  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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    19

  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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    27

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

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#include "e1000.h"

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    31

/* This is the only thing that needs to be changed to adjust the

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 * maximum number of ports that the driver can manage.

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 */

    34

    35

#define E1000_MAX_NIC 32

    36

    37

#define OPTION_UNSET   -1

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#define OPTION_DISABLED 0

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#define OPTION_ENABLED  1

    40

    41

/* All parameters are treated the same, as an integer array of values.

    42

 * This macro just reduces the need to repeat the same declaration code

    43

 * over and over (plus this helps to avoid typo bugs).

    44

 */

    45

    46

#define E1000_PARAM_INIT { [0 ... E1000_MAX_NIC] = OPTION_UNSET }

    47

#define E1000_PARAM(X, desc) \

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	static int __devinitdata X[E1000_MAX_NIC+1] = E1000_PARAM_INIT; \

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	static unsigned int num_##X; \

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	module_param_array_named(X, X, int, &num_##X, 0); \

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	MODULE_PARM_DESC(X, desc);

    52

    53

/* Transmit Descriptor Count

    54

 *

    55

 * Valid Range: 80-256 for 82542 and 82543 gigabit ethernet controllers

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 * Valid Range: 80-4096 for 82544 and newer

    57

 *

    58

 * Default Value: 256

    59

 */

    60

E1000_PARAM(TxDescriptors, "Number of transmit descriptors");

    61

    62

/* Receive Descriptor Count

    63

 *

    64

 * Valid Range: 80-256 for 82542 and 82543 gigabit ethernet controllers

    65

 * Valid Range: 80-4096 for 82544 and newer

    66

 *

    67

 * Default Value: 256

    68

 */

    69

E1000_PARAM(RxDescriptors, "Number of receive descriptors");

    70

    71

/* User Specified Speed Override

    72

 *

    73

 * Valid Range: 0, 10, 100, 1000

    74

 *  - 0    - auto-negotiate at all supported speeds

    75

 *  - 10   - only link at 10 Mbps

    76

 *  - 100  - only link at 100 Mbps

    77

 *  - 1000 - only link at 1000 Mbps

    78

 *

    79

 * Default Value: 0

    80

 */

    81

E1000_PARAM(Speed, "Speed setting");

    82

    83

/* User Specified Duplex Override

    84

 *

    85

 * Valid Range: 0-2

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 *  - 0 - auto-negotiate for duplex

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 *  - 1 - only link at half duplex

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 *  - 2 - only link at full duplex

    89

 *

    90

 * Default Value: 0

    91

 */

    92

E1000_PARAM(Duplex, "Duplex setting");

    93

    94

/* Auto-negotiation Advertisement Override

    95

 *

    96

 * Valid Range: 0x01-0x0F, 0x20-0x2F (copper); 0x20 (fiber)

    97

 *

    98

 * The AutoNeg value is a bit mask describing which speed and duplex

    99

 * combinations should be advertised during auto-negotiation.

   100

 * The supported speed and duplex modes are listed below

   101

 *

   102

 * Bit           7     6     5      4      3     2     1      0

   103

 * Speed (Mbps)  N/A   N/A   1000   N/A    100   100   10     10

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 * Duplex                    Full          Full  Half  Full   Half

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 *

   106

 * Default Value: 0x2F (copper); 0x20 (fiber)

   107

 */

   108

E1000_PARAM(AutoNeg, "Advertised auto-negotiation setting");

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#define AUTONEG_ADV_DEFAULT  0x2F

   110

#define AUTONEG_ADV_MASK     0x2F

   111

   112

/* User Specified Flow Control Override

   113

 *

   114

 * Valid Range: 0-3

   115

 *  - 0 - No Flow Control

   116

 *  - 1 - Rx only, respond to PAUSE frames but do not generate them

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 *  - 2 - Tx only, generate PAUSE frames but ignore them on receive

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 *  - 3 - Full Flow Control Support

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 *

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 * Default Value: Read flow control settings from the EEPROM

   121

 */

   122

E1000_PARAM(FlowControl, "Flow Control setting");

   123

#define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL

   124

   125

/* XsumRX - Receive Checksum Offload Enable/Disable

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 *

   127

 * Valid Range: 0, 1

   128

 *  - 0 - disables all checksum offload

   129

 *  - 1 - enables receive IP/TCP/UDP checksum offload

   130

 *        on 82543 and newer -based NICs

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 *

   132

 * Default Value: 1

   133

 */

   134

E1000_PARAM(XsumRX, "Disable or enable Receive Checksum offload");

   135

   136

/* Transmit Interrupt Delay in units of 1.024 microseconds

   137

 *  Tx interrupt delay needs to typically be set to something non zero

   138

 *

   139

 * Valid Range: 0-65535

   140

 */

   141

E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay");

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#define DEFAULT_TIDV                   8

   143

#define MAX_TXDELAY               0xFFFF

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#define MIN_TXDELAY                    0

   145

   146

/* Transmit Absolute Interrupt Delay in units of 1.024 microseconds

   147

 *

   148

 * Valid Range: 0-65535

   149

 */

   150

E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay");

   151

#define DEFAULT_TADV                  32

   152

#define MAX_TXABSDELAY            0xFFFF

   153

#define MIN_TXABSDELAY                 0

   154

   155

/* Receive Interrupt Delay in units of 1.024 microseconds

   156

 *   hardware will likely hang if you set this to anything but zero.

   157

 *

   158

 * Valid Range: 0-65535

   159

 */

   160

E1000_PARAM(RxIntDelay, "Receive Interrupt Delay");

   161

#define DEFAULT_RDTR                   0

   162

#define MAX_RXDELAY               0xFFFF

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#define MIN_RXDELAY                    0

   164

   165

/* Receive Absolute Interrupt Delay in units of 1.024 microseconds

   166

 *

   167

 * Valid Range: 0-65535

   168

 */

   169

E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");

   170

#define DEFAULT_RADV                   8

   171

#define MAX_RXABSDELAY            0xFFFF

   172

#define MIN_RXABSDELAY                 0

   173

   174

/* Interrupt Throttle Rate (interrupts/sec)

   175

 *

   176

 * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative)

   177

 */

   178

E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");

   179

#define DEFAULT_ITR                    3

   180

#define MAX_ITR                   100000

   181

#define MIN_ITR                      100

   182

   183

/* Enable Smart Power Down of the PHY

   184

 *

   185

 * Valid Range: 0, 1

   186

 *

   187

 * Default Value: 0 (disabled)

   188

 */

   189

E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down");

   190

   191

/* Enable Kumeran Lock Loss workaround

   192

 *

   193

 * Valid Range: 0, 1

   194

 *

   195

 * Default Value: 1 (enabled)

   196

 */

   197

E1000_PARAM(KumeranLockLoss, "Enable Kumeran lock loss workaround");

   198

   199

struct e1000_option {

   200

	enum { enable_option, range_option, list_option } type;

   201

	const char *name;

   202

	const char *err;

   203

	int def;

   204

	union {

   205

		struct { /* range_option info */

   206

			int min;

   207

			int max;

   208

		} r;

   209

		struct { /* list_option info */

   210

			int nr;

   211

			const struct e1000_opt_list { int i; char *str; } *p;

   212

		} l;

   213

	} arg;

   214

};

   215

   216

static int __devinit e1000_validate_option(unsigned int *value,

   217

					   const struct e1000_option *opt,

   218

					   struct e1000_adapter *adapter)

   219

{

   220

	if (*value == OPTION_UNSET) {

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		*value = opt->def;

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		return 0;

   223

	}

   224

   225

	switch (opt->type) {

   226

	case enable_option:

   227

		switch (*value) {

   228

		case OPTION_ENABLED:

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			DPRINTK(PROBE, INFO, "%s Enabled\n", opt->name);

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			return 0;

   231

		case OPTION_DISABLED:

   232

			DPRINTK(PROBE, INFO, "%s Disabled\n", opt->name);

   233

			return 0;

   234

		}

   235

		break;

   236

	case range_option:

   237

		if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {

   238

			DPRINTK(PROBE, INFO,

   239

					"%s set to %i\n", opt->name, *value);

   240

			return 0;

   241

		}

   242

		break;

   243

	case list_option: {

   244

		int i;

   245

		const struct e1000_opt_list *ent;

   246

   247

		for (i = 0; i < opt->arg.l.nr; i++) {

   248

			ent = &opt->arg.l.p[i];

   249

			if (*value == ent->i) {

   250

				if (ent->str[0] != '\0')

   251

					DPRINTK(PROBE, INFO, "%s\n", ent->str);

   252

				return 0;

   253

			}

   254

		}

   255

	}

   256

		break;

   257

	default:

   258

		BUG();

   259

	}

   260

   261

	DPRINTK(PROBE, INFO, "Invalid %s value specified (%i) %s\n",

   262

	       opt->name, *value, opt->err);

   263

	*value = opt->def;

   264

	return -1;

   265

}

   266

   267

static void e1000_check_fiber_options(struct e1000_adapter *adapter);

   268

static void e1000_check_copper_options(struct e1000_adapter *adapter);

   269

   270

/**

   271

 * e1000_check_options - Range Checking for Command Line Parameters

   272

 * @adapter: board private structure

   273

 *

   274

 * This routine checks all command line parameters for valid user

   275

 * input.  If an invalid value is given, or if no user specified

   276

 * value exists, a default value is used.  The final value is stored

   277

 * in a variable in the adapter structure.

   278

 **/

   279

   280

void __devinit e1000_check_options(struct e1000_adapter *adapter)

   281

{

   282

	struct e1000_option opt;

   283

	int bd = adapter->bd_number;

   284

   285

	if (bd >= E1000_MAX_NIC) {

   286

		DPRINTK(PROBE, NOTICE,

   287

		       "Warning: no configuration for board #%i\n", bd);

   288

		DPRINTK(PROBE, NOTICE, "Using defaults for all values\n");

   289

	}

   290

   291

	{ /* Transmit Descriptor Count */

   292

		struct e1000_tx_ring *tx_ring = adapter->tx_ring;

   293

		int i;

   294

		e1000_mac_type mac_type = adapter->hw.mac_type;

   295

   296

		opt = (struct e1000_option) {

   297

			.type = range_option,

   298

			.name = "Transmit Descriptors",

   299

			.err  = "using default of "

   300

				__MODULE_STRING(E1000_DEFAULT_TXD),

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			.def  = E1000_DEFAULT_TXD,

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			.arg  = { .r = {

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				.min = E1000_MIN_TXD,

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				.max = mac_type < e1000_82544 ? E1000_MAX_TXD : E1000_MAX_82544_TXD

   305

				}}

   306

		};

   307

   308

		if (num_TxDescriptors > bd) {

   309

			tx_ring->count = TxDescriptors[bd];

   310

			e1000_validate_option(&tx_ring->count, &opt, adapter);

   311

			tx_ring->count = ALIGN(tx_ring->count,

   312

						REQ_TX_DESCRIPTOR_MULTIPLE);

   313

		} else {

   314

			tx_ring->count = opt.def;

   315

		}

   316

		for (i = 0; i < adapter->num_tx_queues; i++)

   317

			tx_ring[i].count = tx_ring->count;

   318

	}

   319

	{ /* Receive Descriptor Count */

   320

		struct e1000_rx_ring *rx_ring = adapter->rx_ring;

   321

		int i;

   322

		e1000_mac_type mac_type = adapter->hw.mac_type;

   323

   324

		opt = (struct e1000_option) {

   325

			.type = range_option,

   326

			.name = "Receive Descriptors",

   327

			.err  = "using default of "

   328

				__MODULE_STRING(E1000_DEFAULT_RXD),

   329

			.def  = E1000_DEFAULT_RXD,

   330

			.arg  = { .r = {

   331

				.min = E1000_MIN_RXD,

   332

				.max = mac_type < e1000_82544 ? E1000_MAX_RXD : E1000_MAX_82544_RXD

   333

			}}

   334

		};

   335

   336

		if (num_RxDescriptors > bd) {

   337

			rx_ring->count = RxDescriptors[bd];

   338

			e1000_validate_option(&rx_ring->count, &opt, adapter);

   339

			rx_ring->count = ALIGN(rx_ring->count,

   340

						REQ_RX_DESCRIPTOR_MULTIPLE);

   341

		} else {

   342

			rx_ring->count = opt.def;

   343

		}

   344

		for (i = 0; i < adapter->num_rx_queues; i++)

   345

			rx_ring[i].count = rx_ring->count;

   346

	}

   347

	{ /* Checksum Offload Enable/Disable */

   348

		opt = (struct e1000_option) {

   349

			.type = enable_option,

   350

			.name = "Checksum Offload",

   351

			.err  = "defaulting to Enabled",

   352

			.def  = OPTION_ENABLED

   353

		};

   354

   355

		if (num_XsumRX > bd) {

   356

			unsigned int rx_csum = XsumRX[bd];

   357

			e1000_validate_option(&rx_csum, &opt, adapter);

   358

			adapter->rx_csum = rx_csum;

   359

		} else {

   360

			adapter->rx_csum = opt.def;

   361

		}

   362

	}

   363

	{ /* Flow Control */

   364

   365

		struct e1000_opt_list fc_list[] =

   366

			{{ E1000_FC_NONE,    "Flow Control Disabled" },

   367

			 { E1000_FC_RX_PAUSE,"Flow Control Receive Only" },

   368

			 { E1000_FC_TX_PAUSE,"Flow Control Transmit Only" },

   369

			 { E1000_FC_FULL,    "Flow Control Enabled" },

   370

			 { E1000_FC_DEFAULT, "Flow Control Hardware Default" }};

   371

   372

		opt = (struct e1000_option) {

   373

			.type = list_option,

   374

			.name = "Flow Control",

   375

			.err  = "reading default settings from EEPROM",

   376

			.def  = E1000_FC_DEFAULT,

   377

			.arg  = { .l = { .nr = ARRAY_SIZE(fc_list),

   378

					 .p = fc_list }}

   379

		};

   380

   381

		if (num_FlowControl > bd) {

   382

			unsigned int fc = FlowControl[bd];

   383

			e1000_validate_option(&fc, &opt, adapter);

   384

			adapter->hw.fc = adapter->hw.original_fc = fc;

   385

		} else {

   386

			adapter->hw.fc = adapter->hw.original_fc = opt.def;

   387

		}

   388

	}

   389

	{ /* Transmit Interrupt Delay */

   390

		opt = (struct e1000_option) {

   391

			.type = range_option,

   392

			.name = "Transmit Interrupt Delay",

   393

			.err  = "using default of " __MODULE_STRING(DEFAULT_TIDV),

   394

			.def  = DEFAULT_TIDV,

   395

			.arg  = { .r = { .min = MIN_TXDELAY,

   396

					 .max = MAX_TXDELAY }}

   397

		};

   398

   399

		if (num_TxIntDelay > bd) {

   400

			adapter->tx_int_delay = TxIntDelay[bd];

   401

			e1000_validate_option(&adapter->tx_int_delay, &opt,

   402

			                      adapter);

   403

		} else {

   404

			adapter->tx_int_delay = opt.def;

   405

		}

   406

	}

   407

	{ /* Transmit Absolute Interrupt Delay */

   408

		opt = (struct e1000_option) {

   409

			.type = range_option,

   410

			.name = "Transmit Absolute Interrupt Delay",

   411

			.err  = "using default of " __MODULE_STRING(DEFAULT_TADV),

   412

			.def  = DEFAULT_TADV,

   413

			.arg  = { .r = { .min = MIN_TXABSDELAY,

   414

					 .max = MAX_TXABSDELAY }}

   415

		};

   416

   417

		if (num_TxAbsIntDelay > bd) {

   418

			adapter->tx_abs_int_delay = TxAbsIntDelay[bd];

   419

			e1000_validate_option(&adapter->tx_abs_int_delay, &opt,

   420

			                      adapter);

   421

		} else {

   422

			adapter->tx_abs_int_delay = opt.def;

   423

		}

   424

	}

   425

	{ /* Receive Interrupt Delay */

   426

		opt = (struct e1000_option) {

   427

			.type = range_option,

   428

			.name = "Receive Interrupt Delay",

   429

			.err  = "using default of " __MODULE_STRING(DEFAULT_RDTR),

   430

			.def  = DEFAULT_RDTR,

   431

			.arg  = { .r = { .min = MIN_RXDELAY,

   432

					 .max = MAX_RXDELAY }}

   433

		};

   434

   435

		if (num_RxIntDelay > bd) {

   436

			adapter->rx_int_delay = RxIntDelay[bd];

   437

			e1000_validate_option(&adapter->rx_int_delay, &opt,

   438

			                      adapter);

   439

		} else {

   440

			adapter->rx_int_delay = opt.def;

   441

		}

   442

	}

   443

	{ /* Receive Absolute Interrupt Delay */

   444

		opt = (struct e1000_option) {

   445

			.type = range_option,

   446

			.name = "Receive Absolute Interrupt Delay",

   447

			.err  = "using default of " __MODULE_STRING(DEFAULT_RADV),

   448

			.def  = DEFAULT_RADV,

   449

			.arg  = { .r = { .min = MIN_RXABSDELAY,

   450

					 .max = MAX_RXABSDELAY }}

   451

		};

   452

   453

		if (num_RxAbsIntDelay > bd) {

   454

			adapter->rx_abs_int_delay = RxAbsIntDelay[bd];

   455

			e1000_validate_option(&adapter->rx_abs_int_delay, &opt,

   456

			                      adapter);

   457

		} else {

   458

			adapter->rx_abs_int_delay = opt.def;

   459

		}

   460

	}

   461

	{ /* Interrupt Throttling Rate */

   462

		opt = (struct e1000_option) {

   463

			.type = range_option,

   464

			.name = "Interrupt Throttling Rate (ints/sec)",

   465

			.err  = "using default of " __MODULE_STRING(DEFAULT_ITR),

   466

			.def  = DEFAULT_ITR,

   467

			.arg  = { .r = { .min = MIN_ITR,

   468

					 .max = MAX_ITR }}

   469

		};

   470

   471

		if (num_InterruptThrottleRate > bd) {

   472

			adapter->itr = InterruptThrottleRate[bd];

   473

			switch (adapter->itr) {

   474

			case 0:

   475

				DPRINTK(PROBE, INFO, "%s turned off\n",

   476

				        opt.name);

   477

				break;

   478

			case 1:

   479

				DPRINTK(PROBE, INFO, "%s set to dynamic mode\n",

   480

					opt.name);

   481

				adapter->itr_setting = adapter->itr;

   482

				adapter->itr = 20000;

   483

				break;

   484

			case 3:

   485

				DPRINTK(PROBE, INFO,

   486

				        "%s set to dynamic conservative mode\n",

   487

					opt.name);

   488

				adapter->itr_setting = adapter->itr;

   489

				adapter->itr = 20000;

   490

				break;

   491

			default:

   492

				e1000_validate_option(&adapter->itr, &opt,

   493

				        adapter);

   494

				/* save the setting, because the dynamic bits change itr */

   495

				/* clear the lower two bits because they are

   496

				 * used as control */

   497

				adapter->itr_setting = adapter->itr & ~3;

   498

				break;

   499

			}

   500

		} else {

   501

			adapter->itr_setting = opt.def;

   502

			adapter->itr = 20000;

   503

		}

   504

	}

   505

	{ /* Smart Power Down */

   506

		opt = (struct e1000_option) {

   507

			.type = enable_option,

   508

			.name = "PHY Smart Power Down",

   509

			.err  = "defaulting to Disabled",

   510

			.def  = OPTION_DISABLED

   511

		};

   512

   513

		if (num_SmartPowerDownEnable > bd) {

   514

			unsigned int spd = SmartPowerDownEnable[bd];

   515

			e1000_validate_option(&spd, &opt, adapter);

   516

			adapter->smart_power_down = spd;

   517

		} else {

   518

			adapter->smart_power_down = opt.def;

   519

		}

   520

	}

   521

   522

	switch (adapter->hw.media_type) {

   523

	case e1000_media_type_fiber:

   524

	case e1000_media_type_internal_serdes:

   525

		e1000_check_fiber_options(adapter);

   526

		break;

   527

	case e1000_media_type_copper:

   528

		e1000_check_copper_options(adapter);

   529

		break;

   530