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

     2

     3

  Intel PRO/1000 Linux driver

     4

  Copyright(c) 1999 - 2008 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.,

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  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

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    27

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

    28

    29

/*

    30

 * 82571EB Gigabit Ethernet Controller

    31

 * 82571EB Gigabit Ethernet Controller (Copper)

    32

 * 82571EB Gigabit Ethernet Controller (Fiber)

    33

 * 82571EB Dual Port Gigabit Mezzanine Adapter

    34

 * 82571EB Quad Port Gigabit Mezzanine Adapter

    35

 * 82571PT Gigabit PT Quad Port Server ExpressModule

    36

 * 82572EI Gigabit Ethernet Controller (Copper)

    37

 * 82572EI Gigabit Ethernet Controller (Fiber)

    38

 * 82572EI Gigabit Ethernet Controller

    39

 * 82573V Gigabit Ethernet Controller (Copper)

    40

 * 82573E Gigabit Ethernet Controller (Copper)

    41

 * 82573L Gigabit Ethernet Controller

    42

 * 82574L Gigabit Network Connection

    43

 * 82583V Gigabit Network Connection

    44

 */

    45

    46

#include <linux/netdevice.h>

    47

#include <linux/delay.h>

    48

#include <linux/pci.h>

    49

    50

#include "e1000.h"

    51

    52

#define ID_LED_RESERVED_F746 0xF746

    53

#define ID_LED_DEFAULT_82573 ((ID_LED_DEF1_DEF2 << 12) | \

    54

			      (ID_LED_OFF1_ON2  <<  8) | \

    55

			      (ID_LED_DEF1_DEF2 <<  4) | \

    56

			      (ID_LED_DEF1_DEF2))

    57

    58

#define E1000_GCR_L1_ACT_WITHOUT_L0S_RX 0x08000000

    59

    60

#define E1000_NVM_INIT_CTRL2_MNGM 0x6000 /* Manageability Operation Mode mask */

    61

    62

static s32 e1000_get_phy_id_82571(struct e1000_hw *hw);

    63

static s32 e1000_setup_copper_link_82571(struct e1000_hw *hw);

    64

static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw);

    65

static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw);

    66

static s32 e1000_write_nvm_eewr_82571(struct e1000_hw *hw, u16 offset,

    67

				      u16 words, u16 *data);

    68

static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw);

    69

static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw);

    70

static s32 e1000_setup_link_82571(struct e1000_hw *hw);

    71

static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw);

    72

static bool e1000_check_mng_mode_82574(struct e1000_hw *hw);

    73

static s32 e1000_led_on_82574(struct e1000_hw *hw);

    74

static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw);

    75

    76

/**

    77

 *  e1000_init_phy_params_82571 - Init PHY func ptrs.

    78

 *  @hw: pointer to the HW structure

    79

 *

    80

 *  This is a function pointer entry point called by the api module.

    81

 **/

    82

static s32 e1000_init_phy_params_82571(struct e1000_hw *hw)

    83

{

    84

	struct e1000_phy_info *phy = &hw->phy;

    85

	s32 ret_val;

    86

    87

	if (hw->phy.media_type != e1000_media_type_copper) {

    88

		phy->type = e1000_phy_none;

    89

		return 0;

    90

	}

    91

    92

	phy->addr			 = 1;

    93

	phy->autoneg_mask		 = AUTONEG_ADVERTISE_SPEED_DEFAULT;

    94

	phy->reset_delay_us		 = 100;

    95

    96

	switch (hw->mac.type) {

    97

	case e1000_82571:

    98

	case e1000_82572:

    99

		phy->type		 = e1000_phy_igp_2;

   100

		break;

   101

	case e1000_82573:

   102

		phy->type		 = e1000_phy_m88;

   103

		break;

   104

	case e1000_82574:

   105

	case e1000_82583:

   106

		phy->type		 = e1000_phy_bm;

   107

		break;

   108

	default:

   109

		return -E1000_ERR_PHY;

   110

		break;

   111

	}

   112

   113

	/* This can only be done after all function pointers are setup. */

   114

	ret_val = e1000_get_phy_id_82571(hw);

   115

   116

	/* Verify phy id */

   117

	switch (hw->mac.type) {

   118

	case e1000_82571:

   119

	case e1000_82572:

   120

		if (phy->id != IGP01E1000_I_PHY_ID)

   121

			return -E1000_ERR_PHY;

   122

		break;

   123

	case e1000_82573:

   124

		if (phy->id != M88E1111_I_PHY_ID)

   125

			return -E1000_ERR_PHY;

   126

		break;

   127

	case e1000_82574:

   128

	case e1000_82583:

   129

		if (phy->id != BME1000_E_PHY_ID_R2)

   130

			return -E1000_ERR_PHY;

   131

		break;

   132

	default:

   133

		return -E1000_ERR_PHY;

   134

		break;

   135

	}

   136

   137

	return 0;

   138

}

   139

   140

/**

   141

 *  e1000_init_nvm_params_82571 - Init NVM func ptrs.

   142

 *  @hw: pointer to the HW structure

   143

 *

   144

 *  This is a function pointer entry point called by the api module.

   145

 **/

   146

static s32 e1000_init_nvm_params_82571(struct e1000_hw *hw)

   147

{

   148

	struct e1000_nvm_info *nvm = &hw->nvm;

   149

	u32 eecd = er32(EECD);

   150

	u16 size;

   151

   152

	nvm->opcode_bits = 8;

   153

	nvm->delay_usec = 1;

   154

	switch (nvm->override) {

   155

	case e1000_nvm_override_spi_large:

   156

		nvm->page_size = 32;

   157

		nvm->address_bits = 16;

   158

		break;

   159

	case e1000_nvm_override_spi_small:

   160

		nvm->page_size = 8;

   161

		nvm->address_bits = 8;

   162

		break;

   163

	default:

   164

		nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;

   165

		nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;

   166

		break;

   167

	}

   168

   169

	switch (hw->mac.type) {

   170

	case e1000_82573:

   171

	case e1000_82574:

   172

	case e1000_82583:

   173

		if (((eecd >> 15) & 0x3) == 0x3) {

   174

			nvm->type = e1000_nvm_flash_hw;

   175

			nvm->word_size = 2048;

   176

			/*

   177

			 * Autonomous Flash update bit must be cleared due

   178

			 * to Flash update issue.

   179

			 */

   180

			eecd &= ~E1000_EECD_AUPDEN;

   181

			ew32(EECD, eecd);

   182

			break;

   183

		}

   184

		/* Fall Through */

   185

	default:

   186

		nvm->type = e1000_nvm_eeprom_spi;

   187

		size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>

   188

				  E1000_EECD_SIZE_EX_SHIFT);

   189

		/*

   190

		 * Added to a constant, "size" becomes the left-shift value

   191

		 * for setting word_size.

   192

		 */

   193

		size += NVM_WORD_SIZE_BASE_SHIFT;

   194

   195

		/* EEPROM access above 16k is unsupported */

   196

		if (size > 14)

   197

			size = 14;

   198

		nvm->word_size	= 1 << size;

   199

		break;

   200

	}

   201

   202

	return 0;

   203

}

   204

   205

/**

   206

 *  e1000_init_mac_params_82571 - Init MAC func ptrs.

   207

 *  @hw: pointer to the HW structure

   208

 *

   209

 *  This is a function pointer entry point called by the api module.

   210

 **/

   211

static s32 e1000_init_mac_params_82571(struct e1000_adapter *adapter)

   212

{

   213

	struct e1000_hw *hw = &adapter->hw;

   214

	struct e1000_mac_info *mac = &hw->mac;

   215

	struct e1000_mac_operations *func = &mac->ops;

   216

	u32 swsm = 0;

   217

	u32 swsm2 = 0;

   218

	bool force_clear_smbi = false;

   219

   220

	/* Set media type */

   221

	switch (adapter->pdev->device) {

   222

	case E1000_DEV_ID_82571EB_FIBER:

   223

	case E1000_DEV_ID_82572EI_FIBER:

   224

	case E1000_DEV_ID_82571EB_QUAD_FIBER:

   225

		hw->phy.media_type = e1000_media_type_fiber;

   226

		break;

   227

	case E1000_DEV_ID_82571EB_SERDES:

   228

	case E1000_DEV_ID_82572EI_SERDES:

   229

	case E1000_DEV_ID_82571EB_SERDES_DUAL:

   230

	case E1000_DEV_ID_82571EB_SERDES_QUAD:

   231

		hw->phy.media_type = e1000_media_type_internal_serdes;

   232

		break;

   233

	default:

   234

		hw->phy.media_type = e1000_media_type_copper;

   235

		break;

   236

	}

   237

   238

	/* Set mta register count */

   239

	mac->mta_reg_count = 128;

   240

	/* Set rar entry count */

   241

	mac->rar_entry_count = E1000_RAR_ENTRIES;

   242

	/* Set if manageability features are enabled. */

   243

	mac->arc_subsystem_valid = (er32(FWSM) & E1000_FWSM_MODE_MASK) ? 1 : 0;

   244

   245

	/* check for link */

   246

	switch (hw->phy.media_type) {

   247

	case e1000_media_type_copper:

   248

		func->setup_physical_interface = e1000_setup_copper_link_82571;

   249

		func->check_for_link = e1000e_check_for_copper_link;

   250

		func->get_link_up_info = e1000e_get_speed_and_duplex_copper;

   251

		break;

   252

	case e1000_media_type_fiber:

   253

		func->setup_physical_interface =

   254

			e1000_setup_fiber_serdes_link_82571;

   255

		func->check_for_link = e1000e_check_for_fiber_link;

   256

		func->get_link_up_info =

   257

			e1000e_get_speed_and_duplex_fiber_serdes;

   258

		break;

   259

	case e1000_media_type_internal_serdes:

   260

		func->setup_physical_interface =

   261

			e1000_setup_fiber_serdes_link_82571;

   262

		func->check_for_link = e1000_check_for_serdes_link_82571;

   263

		func->get_link_up_info =

   264

			e1000e_get_speed_and_duplex_fiber_serdes;

   265

		break;

   266

	default:

   267

		return -E1000_ERR_CONFIG;

   268

		break;

   269

	}

   270

   271

	switch (hw->mac.type) {

   272

	case e1000_82574:

   273

	case e1000_82583:

   274

		func->check_mng_mode = e1000_check_mng_mode_82574;

   275

		func->led_on = e1000_led_on_82574;

   276

		break;

   277

	default:

   278

		func->check_mng_mode = e1000e_check_mng_mode_generic;

   279

		func->led_on = e1000e_led_on_generic;

   280

		break;

   281

	}

   282

   283

	/*

   284

	 * Ensure that the inter-port SWSM.SMBI lock bit is clear before

   285

	 * first NVM or PHY acess. This should be done for single-port

   286

	 * devices, and for one port only on dual-port devices so that

   287

	 * for those devices we can still use the SMBI lock to synchronize

   288

	 * inter-port accesses to the PHY & NVM.

   289

	 */

   290

	switch (hw->mac.type) {

   291

	case e1000_82571:

   292

	case e1000_82572:

   293

		swsm2 = er32(SWSM2);

   294

   295

		if (!(swsm2 & E1000_SWSM2_LOCK)) {

   296

			/* Only do this for the first interface on this card */

   297

			ew32(SWSM2,

   298

			    swsm2 | E1000_SWSM2_LOCK);

   299

			force_clear_smbi = true;

   300

		} else

   301

			force_clear_smbi = false;

   302

		break;

   303

	default:

   304

		force_clear_smbi = true;

   305

		break;

   306

	}

   307

   308

	if (force_clear_smbi) {

   309

		/* Make sure SWSM.SMBI is clear */

   310

		swsm = er32(SWSM);

   311

		if (swsm & E1000_SWSM_SMBI) {

   312

			/* This bit should not be set on a first interface, and

   313

			 * indicates that the bootagent or EFI code has

   314

			 * improperly left this bit enabled

   315

			 */

   316

			hw_dbg(hw, "Please update your 82571 Bootagent\n");

   317

		}

   318

		ew32(SWSM, swsm & ~E1000_SWSM_SMBI);

   319

	}

   320

   321

	/*

   322

	 * Initialze device specific counter of SMBI acquisition

   323

	 * timeouts.

   324

	 */

   325

	 hw->dev_spec.e82571.smb_counter = 0;

   326

   327

	return 0;

   328

}

   329

   330

static s32 e1000_get_variants_82571(struct e1000_adapter *adapter)

   331

{

   332

	struct e1000_hw *hw = &adapter->hw;

   333

	static int global_quad_port_a; /* global port a indication */

   334

	struct pci_dev *pdev = adapter->pdev;

   335

	u16 eeprom_data = 0;

   336

	int is_port_b = er32(STATUS) & E1000_STATUS_FUNC_1;

   337

	s32 rc;

   338

   339

	rc = e1000_init_mac_params_82571(adapter);

   340

	if (rc)

   341

		return rc;

   342

   343

	rc = e1000_init_nvm_params_82571(hw);

   344

	if (rc)

   345

		return rc;

   346

   347

	rc = e1000_init_phy_params_82571(hw);

   348

	if (rc)

   349

		return rc;

   350

   351

	/* tag quad port adapters first, it's used below */

   352

	switch (pdev->device) {

   353

	case E1000_DEV_ID_82571EB_QUAD_COPPER:

   354

	case E1000_DEV_ID_82571EB_QUAD_FIBER:

   355

	case E1000_DEV_ID_82571EB_QUAD_COPPER_LP:

   356

	case E1000_DEV_ID_82571PT_QUAD_COPPER:

   357

		adapter->flags |= FLAG_IS_QUAD_PORT;

   358

		/* mark the first port */

   359

		if (global_quad_port_a == 0)

   360

			adapter->flags |= FLAG_IS_QUAD_PORT_A;

   361

		/* Reset for multiple quad port adapters */

   362

		global_quad_port_a++;

   363

		if (global_quad_port_a == 4)

   364

			global_quad_port_a = 0;

   365

		break;

   366

	default:

   367

		break;

   368

	}

   369

   370

	switch (adapter->hw.mac.type) {

   371

	case e1000_82571:

   372

		/* these dual ports don't have WoL on port B at all */

   373

		if (((pdev->device == E1000_DEV_ID_82571EB_FIBER) ||

   374

		     (pdev->device == E1000_DEV_ID_82571EB_SERDES) ||

   375

		     (pdev->device == E1000_DEV_ID_82571EB_COPPER)) &&

   376

		    (is_port_b))

   377

			adapter->flags &= ~FLAG_HAS_WOL;

   378

		/* quad ports only support WoL on port A */

   379

		if (adapter->flags & FLAG_IS_QUAD_PORT &&

   380

		    (!(adapter->flags & FLAG_IS_QUAD_PORT_A)))

   381

			adapter->flags &= ~FLAG_HAS_WOL;

   382

		/* Does not support WoL on any port */

   383

		if (pdev->device == E1000_DEV_ID_82571EB_SERDES_QUAD)

   384

			adapter->flags &= ~FLAG_HAS_WOL;

   385

		break;

   386

   387

	case e1000_82573:

   388

		if (pdev->device == E1000_DEV_ID_82573L) {

   389

			if (e1000_read_nvm(&adapter->hw, NVM_INIT_3GIO_3, 1,

   390

				       &eeprom_data) < 0)

   391

				break;

   392

			if (!(eeprom_data & NVM_WORD1A_ASPM_MASK)) {

   393

				adapter->flags |= FLAG_HAS_JUMBO_FRAMES;

   394

				adapter->max_hw_frame_size = DEFAULT_JUMBO;

   395

			}

   396

		}

   397

		break;

   398

	default:

   399

		break;

   400

	}

   401

   402

	return 0;

   403

}

   404

   405

/**

   406

 *  e1000_get_phy_id_82571 - Retrieve the PHY ID and revision

   407

 *  @hw: pointer to the HW structure

   408

 *

   409

 *  Reads the PHY registers and stores the PHY ID and possibly the PHY

   410

 *  revision in the hardware structure.

   411

 **/

   412

static s32 e1000_get_phy_id_82571(struct e1000_hw *hw)

   413

{

   414

	struct e1000_phy_info *phy = &hw->phy;

   415

	s32 ret_val;

   416

	u16 phy_id = 0;

   417

   418

	switch (hw->mac.type) {

   419

	case e1000_82571:

   420

	case e1000_82572:

   421

		/*

   422

		 * The 82571 firmware may still be configuring the PHY.

   423

		 * In this case, we cannot access the PHY until the

   424

		 * configuration is done.  So we explicitly set the

   425

		 * PHY ID.

   426

		 */

   427

		phy->id = IGP01E1000_I_PHY_ID;

   428

		break;

   429

	case e1000_82573:

   430

		return e1000e_get_phy_id(hw);

   431

		break;

   432

	case e1000_82574:

   433

	case e1000_82583:

   434

		ret_val = e1e_rphy(hw, PHY_ID1, &phy_id);

   435

		if (ret_val)

   436

			return ret_val;

   437

   438

		phy->id = (u32)(phy_id << 16);

   439

		udelay(20);

   440

		ret_val = e1e_rphy(hw, PHY_ID2, &phy_id);

   441

		if (ret_val)

   442

			return ret_val;

   443

   444

		phy->id |= (u32)(phy_id);

   445

		phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK);

   446

		break;

   447

	default:

   448

		return -E1000_ERR_PHY;

   449

		break;

   450

	}

   451

   452

	return 0;

   453

}

   454

   455

/**

   456

 *  e1000_get_hw_semaphore_82571 - Acquire hardware semaphore

   457

 *  @hw: pointer to the HW structure

   458

 *

   459

 *  Acquire the HW semaphore to access the PHY or NVM

   460

 **/

   461

static s32 e1000_get_hw_semaphore_82571(struct e1000_hw *hw)

   462

{

   463

	u32 swsm;

   464

	s32 sw_timeout = hw->nvm.word_size + 1;

   465

	s32 fw_timeout = hw->nvm.word_size + 1;

   466

	s32 i = 0;

   467

   468

	/*

   469

	 * If we have timedout 3 times on trying to acquire

   470

	 * the inter-port SMBI semaphore, there is old code

   471

	 * operating on the other port, and it is not

   472

	 * releasing SMBI. Modify the number of times that

   473

	 * we try for the semaphore to interwork with this

   474

	 * older code.

   475

	 */

   476

	if (hw->dev_spec.e82571.smb_counter > 2)

   477

		sw_timeout = 1;

   478

   479

	/* Get the SW semaphore */

   480

	while (i < sw_timeout) {

   481

		swsm = er32(SWSM);

   482

		if (!(swsm & E1000_SWSM_SMBI))

   483

			break;

   484

   485

		udelay(50);

   486

		i++;

   487

	}

   488

   489

	if (i == sw_timeout) {

   490

		hw_dbg(hw, "Driver can't access device - SMBI bit is set.\n");

   491

		hw->dev_spec.e82571.smb_counter++;

   492

	}

   493

	/* Get the FW semaphore. */

   494

	for (i = 0; i < fw_timeout; i++) {

   495

		swsm = er32(SWSM);

   496

		ew32(SWSM, swsm | E1000_SWSM_SWESMBI);

   497

   498

		/* Semaphore acquired if bit latched */

   499

		if (er32(SWSM) & E1000_SWSM_SWESMBI)

   500

			break;

   501

   502

		udelay(50);

   503

	}

   504

   505

	if (i == fw_timeout) {

   506

		/* Release semaphores */

   507

		e1000_put_hw_semaphore_82571(hw);

   508

		hw_dbg(hw, "Driver can't access the NVM\n");

   509

		return -E1000_ERR_NVM;

   510

	}

   511

   512

	return 0;

   513

}

   514

   515

/**

   516

 *  e1000_put_hw_semaphore_82571 - Release hardware semaphore

   517

 *  @hw: pointer to the HW structure

   518

 *

   519

 *  Release hardware semaphore used to access the PHY or NVM

   520

 **/

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static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw)

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{

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	u32 swsm;

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	swsm = er32(SWSM);

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	swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);

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	ew32(SWSM, swsm);

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}

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