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

     2

     3

  Intel PRO/1000 Linux driver

     4

  Copyright(c) 1999 - 2010 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

    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

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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 "e1000-2.6.37-ethercat.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

/*

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 * 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[] =

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	 { 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_adapter *adapter)

   205

{

   206

	struct e1000_hw *hw = &adapter->hw;

   207

	struct e1000_mac_info *mac = &hw->mac;

   208

	struct e1000_mac_operations *func = &mac->ops;

   209

   210

	/* Set media type */

   211

	switch (adapter->pdev->device) {

   212

	case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:

   213

		hw->phy.media_type = e1000_media_type_internal_serdes;

   214

		break;

   215

	default:

   216

		hw->phy.media_type = e1000_media_type_copper;

   217

		break;

   218

	}

   219

   220

	/* Set mta register count */

   221

	mac->mta_reg_count = 128;

   222

	/* Set rar entry count */

   223

	mac->rar_entry_count = E1000_RAR_ENTRIES;

   224

	/* FWSM register */

   225

	mac->has_fwsm = true;

   226

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

   227

	mac->arc_subsystem_valid =

   228

	        (er32(FWSM) & E1000_FWSM_MODE_MASK)

   229

	                ? true : false;

   230

	/* Adaptive IFS not supported */

   231

	mac->adaptive_ifs = false;

   232

   233

	/* check for link */

   234

	switch (hw->phy.media_type) {

   235

	case e1000_media_type_copper:

   236

		func->setup_physical_interface = e1000_setup_copper_link_80003es2lan;

   237

		func->check_for_link = e1000e_check_for_copper_link;

   238

		break;

   239

	case e1000_media_type_fiber:

   240

		func->setup_physical_interface = e1000e_setup_fiber_serdes_link;

   241

		func->check_for_link = e1000e_check_for_fiber_link;

   242

		break;

   243

	case e1000_media_type_internal_serdes:

   244

		func->setup_physical_interface = e1000e_setup_fiber_serdes_link;

   245

		func->check_for_link = e1000e_check_for_serdes_link;

   246

		break;

   247

	default:

   248

		return -E1000_ERR_CONFIG;

   249

		break;

   250

	}

   251

   252

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

   253

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

   254

   255

	return 0;

   256

}

   257

   258

static s32 e1000_get_variants_80003es2lan(struct e1000_adapter *adapter)

   259

{

   260

	struct e1000_hw *hw = &adapter->hw;

   261

	s32 rc;

   262

   263

	rc = e1000_init_mac_params_80003es2lan(adapter);

   264

	if (rc)

   265

		return rc;

   266

   267

	rc = e1000_init_nvm_params_80003es2lan(hw);

   268

	if (rc)

   269

		return rc;

   270

   271

	rc = e1000_init_phy_params_80003es2lan(hw);

   272

	if (rc)

   273

		return rc;

   274

   275

	return 0;

   276

}

   277

   278

/**

   279

 *  e1000_acquire_phy_80003es2lan - Acquire rights to access PHY

   280

 *  @hw: pointer to the HW structure

   281

 *

   282

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

   283

 **/

   284

static s32 e1000_acquire_phy_80003es2lan(struct e1000_hw *hw)

   285

{

   286

	u16 mask;

   287

   288

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

   289

	return e1000_acquire_swfw_sync_80003es2lan(hw, mask);

   290

}

   291

   292

/**

   293

 *  e1000_release_phy_80003es2lan - Release rights to access PHY

   294

 *  @hw: pointer to the HW structure

   295

 *

   296

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

   297

 **/

   298

static void e1000_release_phy_80003es2lan(struct e1000_hw *hw)

   299

{

   300

	u16 mask;

   301

   302

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

   303

	e1000_release_swfw_sync_80003es2lan(hw, mask);

   304

}

   305

   306

/**

   307

 *  e1000_acquire_mac_csr_80003es2lan - Acquire rights to access Kumeran register

   308

 *  @hw: pointer to the HW structure

   309

 *

   310

 *  Acquire the semaphore to access the Kumeran interface.

   311

 *

   312

 **/

   313

static s32 e1000_acquire_mac_csr_80003es2lan(struct e1000_hw *hw)

   314

{

   315

	u16 mask;

   316

   317

	mask = E1000_SWFW_CSR_SM;

   318

   319

	return e1000_acquire_swfw_sync_80003es2lan(hw, mask);

   320

}

   321

   322

/**

   323

 *  e1000_release_mac_csr_80003es2lan - Release rights to access Kumeran Register

   324

 *  @hw: pointer to the HW structure

   325

 *

   326

 *  Release the semaphore used to access the Kumeran interface

   327

 **/

   328

static void e1000_release_mac_csr_80003es2lan(struct e1000_hw *hw)

   329

{

   330

	u16 mask;

   331

   332

	mask = E1000_SWFW_CSR_SM;

   333

   334

	e1000_release_swfw_sync_80003es2lan(hw, mask);

   335

}

   336

   337

/**

   338

 *  e1000_acquire_nvm_80003es2lan - Acquire rights to access NVM

   339

 *  @hw: pointer to the HW structure

   340

 *

   341

 *  Acquire the semaphore to access the EEPROM.

   342

 **/

   343

static s32 e1000_acquire_nvm_80003es2lan(struct e1000_hw *hw)

   344

{

   345

	s32 ret_val;

   346

   347

	ret_val = e1000_acquire_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);

   348

	if (ret_val)

   349

		return ret_val;

   350

   351

	ret_val = e1000e_acquire_nvm(hw);

   352

   353

	if (ret_val)

   354

		e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);

   355

   356

	return ret_val;

   357

}

   358

   359

/**

   360

 *  e1000_release_nvm_80003es2lan - Relinquish rights to access NVM

   361

 *  @hw: pointer to the HW structure

   362

 *

   363

 *  Release the semaphore used to access the EEPROM.

   364

 **/

   365

static void e1000_release_nvm_80003es2lan(struct e1000_hw *hw)

   366

{

   367

	e1000e_release_nvm(hw);

   368

	e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);

   369

}

   370

   371

/**

   372

 *  e1000_acquire_swfw_sync_80003es2lan - Acquire SW/FW semaphore

   373

 *  @hw: pointer to the HW structure

   374

 *  @mask: specifies which semaphore to acquire

   375

 *

   376

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

   377

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

   378

 **/

   379

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

   380

{

   381

	u32 swfw_sync;

   382

	u32 swmask = mask;

   383

	u32 fwmask = mask << 16;

   384

	s32 i = 0;

   385

	s32 timeout = 50;

   386

   387

	while (i < timeout) {

   388

		if (e1000e_get_hw_semaphore(hw))

   389

			return -E1000_ERR_SWFW_SYNC;

   390

   391

		swfw_sync = er32(SW_FW_SYNC);

   392

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

   393

			break;

   394

   395

		/*

   396

		 * Firmware currently using resource (fwmask)

   397

		 * or other software thread using resource (swmask)

   398

		 */

   399

		e1000e_put_hw_semaphore(hw);

   400

		mdelay(5);

   401

		i++;

   402

	}

   403

   404

	if (i == timeout) {

   405

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

   406

		return -E1000_ERR_SWFW_SYNC;

   407

	}

   408

   409

	swfw_sync |= swmask;

   410

	ew32(SW_FW_SYNC, swfw_sync);

   411

   412

	e1000e_put_hw_semaphore(hw);

   413

   414

	return 0;

   415

}

   416

   417

/**

   418

 *  e1000_release_swfw_sync_80003es2lan - Release SW/FW semaphore

   419

 *  @hw: pointer to the HW structure

   420

 *  @mask: specifies which semaphore to acquire

   421

 *

   422

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

   423

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

   424

 **/

   425

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

   426

{

   427

	u32 swfw_sync;

   428

   429

	while (e1000e_get_hw_semaphore(hw) != 0);

   430

	/* Empty */

   431

   432

	swfw_sync = er32(SW_FW_SYNC);

   433

	swfw_sync &= ~mask;

   434

	ew32(SW_FW_SYNC, swfw_sync);

   435

   436

	e1000e_put_hw_semaphore(hw);

   437

}

   438

   439

/**

   440

 *  e1000_read_phy_reg_gg82563_80003es2lan - Read GG82563 PHY register

   441

 *  @hw: pointer to the HW structure

   442

 *  @offset: offset of the register to read

   443

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

   444

 *

   445

 *  Read the GG82563 PHY register.

   446

 **/

   447

static s32 e1000_read_phy_reg_gg82563_80003es2lan(struct e1000_hw *hw,

   448

						  u32 offset, u16 *data)

   449

{

   450

	s32 ret_val;

   451

	u32 page_select;

   452

	u16 temp;

   453

   454

	ret_val = e1000_acquire_phy_80003es2lan(hw);

   455

	if (ret_val)

   456

		return ret_val;

   457

   458

	/* Select Configuration Page */

   459

	if ((offset & MAX_PHY_REG_ADDRESS) < GG82563_MIN_ALT_REG) {

   460

		page_select = GG82563_PHY_PAGE_SELECT;

   461

	} else {

   462

		/*

   463

		 * Use Alternative Page Select register to access

   464

		 * registers 30 and 31

   465

		 */

   466

		page_select = GG82563_PHY_PAGE_SELECT_ALT;

   467

	}

   468

   469

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

   470

	ret_val = e1000e_write_phy_reg_mdic(hw, page_select, temp);

   471

	if (ret_val) {

   472

		e1000_release_phy_80003es2lan(hw);

   473

		return ret_val;

   474

	}

   475

   476

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

   477

		/*

   478

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

   479

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

   480

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

   481

		 */

   482

		udelay(200);

   483

   484

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

   485

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

   486

   487

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

   488

			ret_val = -E1000_ERR_PHY;

   489

			e1000_release_phy_80003es2lan(hw);

   490

			return ret_val;

   491

		}

   492

   493

		udelay(200);

   494

   495

		ret_val = e1000e_read_phy_reg_mdic(hw,

   496

		                                  MAX_PHY_REG_ADDRESS & offset,

   497

		                                  data);

   498

   499

		udelay(200);

   500

	} else {

   501

		ret_val = e1000e_read_phy_reg_mdic(hw,

   502

		                                  MAX_PHY_REG_ADDRESS & offset,

   503

		                                  data);

   504

	}

   505

   506

	e1000_release_phy_80003es2lan(hw);

   507

   508

	return ret_val;

   509

}

   510

   511

/**

   512

 *  e1000_write_phy_reg_gg82563_80003es2lan - Write GG82563 PHY register

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 *  @hw: pointer to the HW structure

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 *  @offset: offset of the register to read

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 *  @data: value to write to the register

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 *

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 *  Write to the GG82563 PHY register.

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 **/

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static s32 e1000_write_phy_reg_gg82563_80003es2lan(struct e1000_hw *hw,

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						   u32 offset, u16 data)

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{

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	s32 ret_val;

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	u32 page_select;

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	u16 temp;

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	ret_val = e1000_acquire_phy_80003es2lan(hw);

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	if (ret_val)

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		return ret_val;

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