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

     2

     3

  Intel PRO/1000 Linux driver

     4

  Copyright(c) 1999 - 2012 Intel Corporation.

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  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

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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

    13

  more details.

    14

    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.

    18

    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:

    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

 * 80003ES2LAN Gigabit Ethernet Controller (Copper)

    31

 * 80003ES2LAN Gigabit Ethernet Controller (Serdes)

    32

 */

    33

    34

#include "e1000.h"

    35

    36

#define E1000_KMRNCTRLSTA_OFFSET_FIFO_CTRL	 0x00

    37

#define E1000_KMRNCTRLSTA_OFFSET_INB_CTRL	 0x02

    38

#define E1000_KMRNCTRLSTA_OFFSET_HD_CTRL	 0x10

    39

#define E1000_KMRNCTRLSTA_OFFSET_MAC2PHY_OPMODE	 0x1F

    40

    41

#define E1000_KMRNCTRLSTA_FIFO_CTRL_RX_BYPASS	 0x0008

    42

#define E1000_KMRNCTRLSTA_FIFO_CTRL_TX_BYPASS	 0x0800

    43

#define E1000_KMRNCTRLSTA_INB_CTRL_DIS_PADDING	 0x0010

    44

    45

#define E1000_KMRNCTRLSTA_HD_CTRL_10_100_DEFAULT 0x0004

    46

#define E1000_KMRNCTRLSTA_HD_CTRL_1000_DEFAULT	 0x0000

    47

#define E1000_KMRNCTRLSTA_OPMODE_E_IDLE		 0x2000

    48

    49

#define E1000_KMRNCTRLSTA_OPMODE_MASK		 0x000C

    50

#define E1000_KMRNCTRLSTA_OPMODE_INBAND_MDIO	 0x0004

    51

    52

#define E1000_TCTL_EXT_GCEX_MASK 0x000FFC00 /* Gigabit Carry Extend Padding */

    53

#define DEFAULT_TCTL_EXT_GCEX_80003ES2LAN	 0x00010000

    54

    55

#define DEFAULT_TIPG_IPGT_1000_80003ES2LAN	 0x8

    56

#define DEFAULT_TIPG_IPGT_10_100_80003ES2LAN	 0x9

    57

    58

/* GG82563 PHY Specific Status Register (Page 0, Register 16 */

    59

#define GG82563_PSCR_POLARITY_REVERSAL_DISABLE	 0x0002 /* 1=Reversal Disab. */

    60

#define GG82563_PSCR_CROSSOVER_MODE_MASK	 0x0060

    61

#define GG82563_PSCR_CROSSOVER_MODE_MDI		 0x0000 /* 00=Manual MDI */

    62

#define GG82563_PSCR_CROSSOVER_MODE_MDIX	 0x0020 /* 01=Manual MDIX */

    63

#define GG82563_PSCR_CROSSOVER_MODE_AUTO	 0x0060 /* 11=Auto crossover */

    64

    65

/* PHY Specific Control Register 2 (Page 0, Register 26) */

    66

#define GG82563_PSCR2_REVERSE_AUTO_NEG		 0x2000

    67

						/* 1=Reverse Auto-Negotiation */

    68

    69

/* MAC Specific Control Register (Page 2, Register 21) */

    70

/* Tx clock speed for Link Down and 1000BASE-T for the following speeds */

    71

#define GG82563_MSCR_TX_CLK_MASK		 0x0007

    72

#define GG82563_MSCR_TX_CLK_10MBPS_2_5		 0x0004

    73

#define GG82563_MSCR_TX_CLK_100MBPS_25		 0x0005

    74

#define GG82563_MSCR_TX_CLK_1000MBPS_25		 0x0007

    75

    76

#define GG82563_MSCR_ASSERT_CRS_ON_TX		 0x0010 /* 1=Assert */

    77

    78

/* DSP Distance Register (Page 5, Register 26) */

    79

#define GG82563_DSPD_CABLE_LENGTH		 0x0007 /* 0 = <50M

    80

							   1 = 50-80M

    81

							   2 = 80-110M

    82

							   3 = 110-140M

    83

							   4 = >140M */

    84

    85

/* Kumeran Mode Control Register (Page 193, Register 16) */

    86

#define GG82563_KMCR_PASS_FALSE_CARRIER		 0x0800

    87

    88

/* Max number of times Kumeran read/write should be validated */

    89

#define GG82563_MAX_KMRN_RETRY  0x5

    90

    91

/* Power Management Control Register (Page 193, Register 20) */

    92

#define GG82563_PMCR_ENABLE_ELECTRICAL_IDLE	 0x0001

    93

					   /* 1=Enable SERDES Electrical Idle */

    94

    95

/* In-Band Control Register (Page 194, Register 18) */

    96

#define GG82563_ICR_DIS_PADDING			 0x0010 /* Disable Padding */

    97

    98

/*

    99

 * A table for the GG82563 cable length where the range is defined

   100

 * with a lower bound at "index" and the upper bound at

   101

 * "index + 5".

   102

 */

   103

static const u16 e1000_gg82563_cable_length_table[] = {

   104

	 0, 60, 115, 150, 150, 60, 115, 150, 180, 180, 0xFF };

   105

#define GG82563_CABLE_LENGTH_TABLE_SIZE \

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		ARRAY_SIZE(e1000_gg82563_cable_length_table)

   107

   108

static s32 e1000_setup_copper_link_80003es2lan(struct e1000_hw *hw);

   109

static s32 e1000_acquire_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask);

   110

static void e1000_release_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask);

   111

static void e1000_initialize_hw_bits_80003es2lan(struct e1000_hw *hw);

   112

static void e1000_clear_hw_cntrs_80003es2lan(struct e1000_hw *hw);

   113

static s32 e1000_cfg_kmrn_1000_80003es2lan(struct e1000_hw *hw);

   114

static s32 e1000_cfg_kmrn_10_100_80003es2lan(struct e1000_hw *hw, u16 duplex);

   115

static s32 e1000_cfg_on_link_up_80003es2lan(struct e1000_hw *hw);

   116

static s32  e1000_read_kmrn_reg_80003es2lan(struct e1000_hw *hw, u32 offset,

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                                            u16 *data);

   118

static s32  e1000_write_kmrn_reg_80003es2lan(struct e1000_hw *hw, u32 offset,

   119

                                             u16 data);

   120

static void e1000_power_down_phy_copper_80003es2lan(struct e1000_hw *hw);

   121

   122

/**

   123

 *  e1000_init_phy_params_80003es2lan - Init ESB2 PHY func ptrs.

   124

 *  @hw: pointer to the HW structure

   125

 **/

   126

static s32 e1000_init_phy_params_80003es2lan(struct e1000_hw *hw)

   127

{

   128

	struct e1000_phy_info *phy = &hw->phy;

   129

	s32 ret_val;

   130

   131

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

   132

		phy->type	= e1000_phy_none;

   133

		return 0;

   134

	} else {

   135

		phy->ops.power_up = e1000_power_up_phy_copper;

   136

		phy->ops.power_down = e1000_power_down_phy_copper_80003es2lan;

   137

	}

   138

   139

	phy->addr		= 1;

   140

	phy->autoneg_mask	= AUTONEG_ADVERTISE_SPEED_DEFAULT;

   141

	phy->reset_delay_us      = 100;

   142

	phy->type		= e1000_phy_gg82563;

   143

   144

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

   145

	ret_val = e1000e_get_phy_id(hw);

   146

   147

	/* Verify phy id */

   148

	if (phy->id != GG82563_E_PHY_ID)

   149

		return -E1000_ERR_PHY;

   150

   151

	return ret_val;

   152

}

   153

   154

/**

   155

 *  e1000_init_nvm_params_80003es2lan - Init ESB2 NVM func ptrs.

   156

 *  @hw: pointer to the HW structure

   157

 **/

   158

static s32 e1000_init_nvm_params_80003es2lan(struct e1000_hw *hw)

   159

{

   160

	struct e1000_nvm_info *nvm = &hw->nvm;

   161

	u32 eecd = er32(EECD);

   162

	u16 size;

   163

   164

	nvm->opcode_bits	= 8;

   165

	nvm->delay_usec	 = 1;

   166

	switch (nvm->override) {

   167

	case e1000_nvm_override_spi_large:

   168

		nvm->page_size    = 32;

   169

		nvm->address_bits = 16;

   170

		break;

   171

	case e1000_nvm_override_spi_small:

   172

		nvm->page_size    = 8;

   173

		nvm->address_bits = 8;

   174

		break;

   175

	default:

   176

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

   177

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

   178

		break;

   179

	}

   180

   181

	nvm->type = e1000_nvm_eeprom_spi;

   182

   183

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

   184

			  E1000_EECD_SIZE_EX_SHIFT);

   185

   186

	/*

   187

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

   188

	 * for setting word_size.

   189

	 */

   190

	size += NVM_WORD_SIZE_BASE_SHIFT;

   191

   192

	/* EEPROM access above 16k is unsupported */

   193

	if (size > 14)

   194

		size = 14;

   195

	nvm->word_size	= 1 << size;

   196

   197

	return 0;

   198

}

   199

   200

/**

   201

 *  e1000_init_mac_params_80003es2lan - Init ESB2 MAC func ptrs.

   202

 *  @hw: pointer to the HW structure

   203

 **/

   204

static s32 e1000_init_mac_params_80003es2lan(struct e1000_hw *hw)

   205

{

   206

	struct e1000_mac_info *mac = &hw->mac;

   207

   208

	/* Set media type and media-dependent function pointers */

   209

	switch (hw->adapter->pdev->device) {

   210

	case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:

   211

		hw->phy.media_type = e1000_media_type_internal_serdes;

   212

		mac->ops.check_for_link = e1000e_check_for_serdes_link;

   213

		mac->ops.setup_physical_interface =

   214

		    e1000e_setup_fiber_serdes_link;

   215

		break;

   216

	default:

   217

		hw->phy.media_type = e1000_media_type_copper;

   218

		mac->ops.check_for_link = e1000e_check_for_copper_link;

   219

		mac->ops.setup_physical_interface =

   220

		    e1000_setup_copper_link_80003es2lan;

   221

		break;

   222

	}

   223

   224

	/* Set mta register count */

   225

	mac->mta_reg_count = 128;

   226

	/* Set rar entry count */

   227

	mac->rar_entry_count = E1000_RAR_ENTRIES;

   228

	/* FWSM register */

   229

	mac->has_fwsm = true;

   230

	/* ARC supported; valid only if manageability features are enabled. */

   231

	mac->arc_subsystem_valid = !!(er32(FWSM) & E1000_FWSM_MODE_MASK);

   232

	/* Adaptive IFS not supported */

   233

	mac->adaptive_ifs = false;

   234

   235

	/* set lan id for port to determine which phy lock to use */

   236

	hw->mac.ops.set_lan_id(hw);

   237

   238

	return 0;

   239

}

   240

   241

static s32 e1000_get_variants_80003es2lan(struct e1000_adapter *adapter)

   242

{

   243

	struct e1000_hw *hw = &adapter->hw;

   244

	s32 rc;

   245

   246

	rc = e1000_init_mac_params_80003es2lan(hw);

   247

	if (rc)

   248

		return rc;

   249

   250

	rc = e1000_init_nvm_params_80003es2lan(hw);

   251

	if (rc)

   252

		return rc;

   253

   254

	rc = e1000_init_phy_params_80003es2lan(hw);

   255

	if (rc)

   256

		return rc;

   257

   258

	return 0;

   259

}

   260

   261

/**

   262

 *  e1000_acquire_phy_80003es2lan - Acquire rights to access PHY

   263

 *  @hw: pointer to the HW structure

   264

 *

   265

 *  A wrapper to acquire access rights to the correct PHY.

   266

 **/

   267

static s32 e1000_acquire_phy_80003es2lan(struct e1000_hw *hw)

   268

{

   269

	u16 mask;

   270

   271

	mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;

   272

	return e1000_acquire_swfw_sync_80003es2lan(hw, mask);

   273

}

   274

   275

/**

   276

 *  e1000_release_phy_80003es2lan - Release rights to access PHY

   277

 *  @hw: pointer to the HW structure

   278

 *

   279

 *  A wrapper to release access rights to the correct PHY.

   280

 **/

   281

static void e1000_release_phy_80003es2lan(struct e1000_hw *hw)

   282

{

   283

	u16 mask;

   284

   285

	mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;

   286

	e1000_release_swfw_sync_80003es2lan(hw, mask);

   287

}

   288

   289

/**

   290

 *  e1000_acquire_mac_csr_80003es2lan - Acquire right to access Kumeran register

   291

 *  @hw: pointer to the HW structure

   292

 *

   293

 *  Acquire the semaphore to access the Kumeran interface.

   294

 *

   295

 **/

   296

static s32 e1000_acquire_mac_csr_80003es2lan(struct e1000_hw *hw)

   297

{

   298

	u16 mask;

   299

   300

	mask = E1000_SWFW_CSR_SM;

   301

   302

	return e1000_acquire_swfw_sync_80003es2lan(hw, mask);

   303

}

   304

   305

/**

   306

 *  e1000_release_mac_csr_80003es2lan - Release right to access Kumeran Register

   307

 *  @hw: pointer to the HW structure

   308

 *

   309

 *  Release the semaphore used to access the Kumeran interface

   310

 **/

   311

static void e1000_release_mac_csr_80003es2lan(struct e1000_hw *hw)

   312

{

   313

	u16 mask;

   314

   315

	mask = E1000_SWFW_CSR_SM;

   316

   317

	e1000_release_swfw_sync_80003es2lan(hw, mask);

   318

}

   319

   320

/**

   321

 *  e1000_acquire_nvm_80003es2lan - Acquire rights to access NVM

   322

 *  @hw: pointer to the HW structure

   323

 *

   324

 *  Acquire the semaphore to access the EEPROM.

   325

 **/

   326

static s32 e1000_acquire_nvm_80003es2lan(struct e1000_hw *hw)

   327

{

   328

	s32 ret_val;

   329

   330

	ret_val = e1000_acquire_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);

   331

	if (ret_val)

   332

		return ret_val;

   333

   334

	ret_val = e1000e_acquire_nvm(hw);

   335

   336

	if (ret_val)

   337

		e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);

   338

   339

	return ret_val;

   340

}

   341

   342

/**

   343

 *  e1000_release_nvm_80003es2lan - Relinquish rights to access NVM

   344

 *  @hw: pointer to the HW structure

   345

 *

   346

 *  Release the semaphore used to access the EEPROM.

   347

 **/

   348

static void e1000_release_nvm_80003es2lan(struct e1000_hw *hw)

   349

{

   350

	e1000e_release_nvm(hw);

   351

	e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);

   352

}

   353

   354

/**

   355

 *  e1000_acquire_swfw_sync_80003es2lan - Acquire SW/FW semaphore

   356

 *  @hw: pointer to the HW structure

   357

 *  @mask: specifies which semaphore to acquire

   358

 *

   359

 *  Acquire the SW/FW semaphore to access the PHY or NVM.  The mask

   360

 *  will also specify which port we're acquiring the lock for.

   361

 **/

   362

static s32 e1000_acquire_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask)

   363

{

   364

	u32 swfw_sync;

   365

	u32 swmask = mask;

   366

	u32 fwmask = mask << 16;

   367

	s32 i = 0;

   368

	s32 timeout = 50;

   369

   370

	while (i < timeout) {

   371

		if (e1000e_get_hw_semaphore(hw))

   372

			return -E1000_ERR_SWFW_SYNC;

   373

   374

		swfw_sync = er32(SW_FW_SYNC);

   375

		if (!(swfw_sync & (fwmask | swmask)))

   376

			break;

   377

   378

		/*

   379

		 * Firmware currently using resource (fwmask)

   380

		 * or other software thread using resource (swmask)

   381

		 */

   382

		e1000e_put_hw_semaphore(hw);

   383

		mdelay(5);

   384

		i++;

   385

	}

   386

   387

	if (i == timeout) {

   388

		e_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n");

   389

		return -E1000_ERR_SWFW_SYNC;

   390

	}

   391

   392

	swfw_sync |= swmask;

   393

	ew32(SW_FW_SYNC, swfw_sync);

   394

   395

	e1000e_put_hw_semaphore(hw);

   396

   397

	return 0;

   398

}

   399

   400

/**

   401

 *  e1000_release_swfw_sync_80003es2lan - Release SW/FW semaphore

   402

 *  @hw: pointer to the HW structure

   403

 *  @mask: specifies which semaphore to acquire

   404

 *

   405

 *  Release the SW/FW semaphore used to access the PHY or NVM.  The mask

   406

 *  will also specify which port we're releasing the lock for.

   407

 **/

   408

static void e1000_release_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask)

   409

{

   410

	u32 swfw_sync;

   411

   412

	while (e1000e_get_hw_semaphore(hw) != 0)

   413

		; /* Empty */

   414

   415

	swfw_sync = er32(SW_FW_SYNC);

   416

	swfw_sync &= ~mask;

   417

	ew32(SW_FW_SYNC, swfw_sync);

   418

   419

	e1000e_put_hw_semaphore(hw);

   420

}

   421

   422

/**

   423

 *  e1000_read_phy_reg_gg82563_80003es2lan - Read GG82563 PHY register

   424

 *  @hw: pointer to the HW structure

   425

 *  @offset: offset of the register to read

   426

 *  @data: pointer to the data returned from the operation

   427

 *

   428

 *  Read the GG82563 PHY register.

   429

 **/

   430

static s32 e1000_read_phy_reg_gg82563_80003es2lan(struct e1000_hw *hw,

   431

						  u32 offset, u16 *data)

   432

{

   433

	s32 ret_val;

   434

	u32 page_select;

   435

	u16 temp;

   436

   437

	ret_val = e1000_acquire_phy_80003es2lan(hw);

   438

	if (ret_val)

   439

		return ret_val;

   440

   441

	/* Select Configuration Page */

   442

	if ((offset & MAX_PHY_REG_ADDRESS) < GG82563_MIN_ALT_REG) {

   443

		page_select = GG82563_PHY_PAGE_SELECT;

   444

	} else {

   445

		/*

   446

		 * Use Alternative Page Select register to access

   447

		 * registers 30 and 31

   448

		 */

   449

		page_select = GG82563_PHY_PAGE_SELECT_ALT;

   450

	}

   451

   452

	temp = (u16)((u16)offset >> GG82563_PAGE_SHIFT);

   453

	ret_val = e1000e_write_phy_reg_mdic(hw, page_select, temp);

   454

	if (ret_val) {

   455

		e1000_release_phy_80003es2lan(hw);

   456

		return ret_val;

   457

	}

   458

   459

	if (hw->dev_spec.e80003es2lan.mdic_wa_enable) {

   460

		/*

   461

		 * The "ready" bit in the MDIC register may be incorrectly set

   462

		 * before the device has completed the "Page Select" MDI

   463

		 * transaction.  So we wait 200us after each MDI command...

   464

		 */

   465

		udelay(200);

   466

   467

		/* ...and verify the command was successful. */

   468

		ret_val = e1000e_read_phy_reg_mdic(hw, page_select, &temp);

   469

   470

		if (((u16)offset >> GG82563_PAGE_SHIFT) != temp) {

   471

			e1000_release_phy_80003es2lan(hw);

   472

			return -E1000_ERR_PHY;

   473

		}

   474

   475

		udelay(200);

   476

   477

		ret_val = e1000e_read_phy_reg_mdic(hw,

   478

		                                  MAX_PHY_REG_ADDRESS & offset,

   479

		                                  data);

   480

   481

		udelay(200);

   482

	} else {

   483

		ret_val = e1000e_read_phy_reg_mdic(hw,

   484

		                                  MAX_PHY_REG_ADDRESS & offset,

   485

		                                  data);

   486

	}

   487

   488

	e1000_release_phy_80003es2lan(hw);

   489

   490

	return ret_val;

   491

}

   492

   493

/**

   494

 *  e1000_write_phy_reg_gg82563_80003es2lan - Write GG82563 PHY register

   495

 *  @hw: pointer to the HW structure

   496

 *  @offset: offset of the register to read

   497

 *  @data: value to write to the register

   498

 *

   499

 *  Write to the GG82563 PHY register.

   500

 **/

   501

static s32 e1000_write_phy_reg_gg82563_80003es2lan(struct e1000_hw *hw,

   502

						   u32 offset, u16 data)

   503

{

   504

	s32 ret_val;

   505

	u32 page_select;

   506

	u16 temp;

   507

   508

	ret_val = e1000_acquire_phy_80003es2lan(hw);

   509

	if (ret_val)

   510

		return ret_val;

   511

   512

	/* Select Configuration Page */

   513

	if ((offset & MAX_PHY_REG_ADDRESS) < GG82563_MIN_ALT_REG) {

   514

		page_select = GG82563_PHY_PAGE_SELECT;

   515

	} else {

   516

		/*

   517

		 * Use Alternative Page Select register to access

   518

		 * registers 30 and 31

   519

		 */

   520

		page_select = GG82563_PHY_PAGE_SELECT_ALT;

   521

	}

   522

   523

	temp = (u16)((u16)offset >> GG82563_PAGE_SHIFT);

   524

	ret_val = e1000e_write_phy_reg_mdic(hw, page_select, temp);

   525

	if (ret_val) {

   526

		e1000_release_phy_80003es2lan(hw);

   527

		return ret_val;

   528

	}

   529