1

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

     2

     3

  Intel PRO/1000 Linux driver

     4

  Copyright(c) 1999 - 2006 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.,

    17

  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

    26

    27

  vim: noexpandtab

    28

    29

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

    30

    31

#include "e1000-2.6.31-ethercat.h"

    32

#include <net/ip6_checksum.h>

    33

    34

char e1000_driver_name[] = "ec_e1000";

    35

static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";

    36

#define DRV_VERSION "7.3.21-k3-NAPI"

    37

const char e1000_driver_version[] = DRV_VERSION;

    38

static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";

    39

    40

/* e1000_pci_tbl - PCI Device ID Table

    41

 *

    42

 * Last entry must be all 0s

    43

 *

    44

 * Macro expands to...

    45

 *   {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}

    46

 */

    47

static struct pci_device_id e1000_pci_tbl[] = {

    48

	INTEL_E1000_ETHERNET_DEVICE(0x1000),

    49

	INTEL_E1000_ETHERNET_DEVICE(0x1001),

    50

	INTEL_E1000_ETHERNET_DEVICE(0x1004),

    51

	INTEL_E1000_ETHERNET_DEVICE(0x1008),

    52

	INTEL_E1000_ETHERNET_DEVICE(0x1009),

    53

	INTEL_E1000_ETHERNET_DEVICE(0x100C),

    54

	INTEL_E1000_ETHERNET_DEVICE(0x100D),

    55

	INTEL_E1000_ETHERNET_DEVICE(0x100E),

    56

	INTEL_E1000_ETHERNET_DEVICE(0x100F),

    57

	INTEL_E1000_ETHERNET_DEVICE(0x1010),

    58

	INTEL_E1000_ETHERNET_DEVICE(0x1011),

    59

	INTEL_E1000_ETHERNET_DEVICE(0x1012),

    60

	INTEL_E1000_ETHERNET_DEVICE(0x1013),

    61

	INTEL_E1000_ETHERNET_DEVICE(0x1014),

    62

	INTEL_E1000_ETHERNET_DEVICE(0x1015),

    63

	INTEL_E1000_ETHERNET_DEVICE(0x1016),

    64

	INTEL_E1000_ETHERNET_DEVICE(0x1017),

    65

	INTEL_E1000_ETHERNET_DEVICE(0x1018),

    66

	INTEL_E1000_ETHERNET_DEVICE(0x1019),

    67

	INTEL_E1000_ETHERNET_DEVICE(0x101A),

    68

	INTEL_E1000_ETHERNET_DEVICE(0x101D),

    69

	INTEL_E1000_ETHERNET_DEVICE(0x101E),

    70

	INTEL_E1000_ETHERNET_DEVICE(0x1026),

    71

	INTEL_E1000_ETHERNET_DEVICE(0x1027),

    72

	INTEL_E1000_ETHERNET_DEVICE(0x1028),

    73

	INTEL_E1000_ETHERNET_DEVICE(0x1075),

    74

	INTEL_E1000_ETHERNET_DEVICE(0x1076),

    75

	INTEL_E1000_ETHERNET_DEVICE(0x1077),

    76

	INTEL_E1000_ETHERNET_DEVICE(0x1078),

    77

	INTEL_E1000_ETHERNET_DEVICE(0x1079),

    78

	INTEL_E1000_ETHERNET_DEVICE(0x107A),

    79

	INTEL_E1000_ETHERNET_DEVICE(0x107B),

    80

	INTEL_E1000_ETHERNET_DEVICE(0x107C),

    81

	INTEL_E1000_ETHERNET_DEVICE(0x108A),

    82

	INTEL_E1000_ETHERNET_DEVICE(0x1099),

    83

	INTEL_E1000_ETHERNET_DEVICE(0x10B5),

    84

	/* required last entry */

    85

	{0,}

    86

};

    87

    88

// do not auto-load driver

    89

// MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);

    90

    91

int e1000_up(struct e1000_adapter *adapter);

    92

void e1000_down(struct e1000_adapter *adapter);

    93

void e1000_reinit_locked(struct e1000_adapter *adapter);

    94

void e1000_reset(struct e1000_adapter *adapter);

    95

int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);

    96

int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);

    97

int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);

    98

void e1000_free_all_tx_resources(struct e1000_adapter *adapter);

    99

void e1000_free_all_rx_resources(struct e1000_adapter *adapter);

   100

static int e1000_setup_tx_resources(struct e1000_adapter *adapter,

   101

                             struct e1000_tx_ring *txdr);

   102

static int e1000_setup_rx_resources(struct e1000_adapter *adapter,

   103

                             struct e1000_rx_ring *rxdr);

   104

static void e1000_free_tx_resources(struct e1000_adapter *adapter,

   105

                             struct e1000_tx_ring *tx_ring);

   106

static void e1000_free_rx_resources(struct e1000_adapter *adapter,

   107

                             struct e1000_rx_ring *rx_ring);

   108

void e1000_update_stats(struct e1000_adapter *adapter);

   109

   110

static int e1000_init_module(void);

   111

static void e1000_exit_module(void);

   112

static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);

   113

static void __devexit e1000_remove(struct pci_dev *pdev);

   114

static int e1000_alloc_queues(struct e1000_adapter *adapter);

   115

static int e1000_sw_init(struct e1000_adapter *adapter);

   116

static int e1000_open(struct net_device *netdev);

   117

static int e1000_close(struct net_device *netdev);

   118

static void e1000_configure_tx(struct e1000_adapter *adapter);

   119

static void e1000_configure_rx(struct e1000_adapter *adapter);

   120

static void e1000_setup_rctl(struct e1000_adapter *adapter);

   121

static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);

   122

static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);

   123

static void e1000_clean_tx_ring(struct e1000_adapter *adapter,

   124

                                struct e1000_tx_ring *tx_ring);

   125

static void e1000_clean_rx_ring(struct e1000_adapter *adapter,

   126

                                struct e1000_rx_ring *rx_ring);

   127

static void e1000_set_rx_mode(struct net_device *netdev);

   128

static void e1000_update_phy_info(unsigned long data);

   129

static void e1000_watchdog(unsigned long data);

   130

static void e1000_82547_tx_fifo_stall(unsigned long data);

   131

static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);

   132

static struct net_device_stats * e1000_get_stats(struct net_device *netdev);

   133

static int e1000_change_mtu(struct net_device *netdev, int new_mtu);

   134

static int e1000_set_mac(struct net_device *netdev, void *p);

   135

void ec_poll(struct net_device *);

   136

static irqreturn_t e1000_intr(int irq, void *data);

   137

static irqreturn_t e1000_intr_msi(int irq, void *data);

   138

static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,

   139

			       struct e1000_tx_ring *tx_ring);

   140

static int e1000_clean(struct napi_struct *napi, int budget);

   141

static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,

   142

			       struct e1000_rx_ring *rx_ring,

   143

			       int *work_done, int work_to_do);

   144

static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,

   145

                                   struct e1000_rx_ring *rx_ring,

   146

				   int cleaned_count);

   147

static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);

   148

static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,

   149

			   int cmd);

   150

static void e1000_enter_82542_rst(struct e1000_adapter *adapter);

   151

static void e1000_leave_82542_rst(struct e1000_adapter *adapter);

   152

static void e1000_tx_timeout(struct net_device *dev);

   153

static void e1000_reset_task(struct work_struct *work);

   154

static void e1000_smartspeed(struct e1000_adapter *adapter);

   155

static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,

   156

                                       struct sk_buff *skb);

   157

   158

static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);

   159

static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid);

   160

static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);

   161

static void e1000_restore_vlan(struct e1000_adapter *adapter);

   162

   163

#ifdef CONFIG_PM

   164

static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);

   165

static int e1000_resume(struct pci_dev *pdev);

   166

#endif

   167

static void e1000_shutdown(struct pci_dev *pdev);

   168

   169

#ifdef CONFIG_NET_POLL_CONTROLLER

   170

/* for netdump / net console */

   171

static void e1000_netpoll (struct net_device *netdev);

   172

#endif

   173

   174

#define COPYBREAK_DEFAULT 256

   175

static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;

   176

module_param(copybreak, uint, 0644);

   177

MODULE_PARM_DESC(copybreak,

   178

	"Maximum size of packet that is copied to a new buffer on receive");

   179

   180

static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,

   181

                     pci_channel_state_t state);

   182

static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);

   183

static void e1000_io_resume(struct pci_dev *pdev);

   184

   185

static struct pci_error_handlers e1000_err_handler = {

   186

	.error_detected = e1000_io_error_detected,

   187

	.slot_reset = e1000_io_slot_reset,

   188

	.resume = e1000_io_resume,

   189

};

   190

   191

static struct pci_driver e1000_driver = {

   192

	.name     = e1000_driver_name,

   193

	.id_table = e1000_pci_tbl,

   194

	.probe    = e1000_probe,

   195

	.remove   = __devexit_p(e1000_remove),

   196

#ifdef CONFIG_PM

   197

	/* Power Managment Hooks */

   198

	.suspend  = e1000_suspend,

   199

	.resume   = e1000_resume,

   200

#endif

   201

	.shutdown = e1000_shutdown,

   202

	.err_handler = &e1000_err_handler

   203

};

   204

   205

MODULE_AUTHOR("Florian Pose <fp@igh-essen.com>");

   206

MODULE_DESCRIPTION("EtherCAT-capable Intel(R) PRO/1000 Network Driver");

   207

MODULE_LICENSE("GPL");

   208

MODULE_VERSION(DRV_VERSION);

   209

   210

static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;

   211

module_param(debug, int, 0);

   212

MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");

   213

   214

/**

   215

 * e1000_init_module - Driver Registration Routine

   216

 *

   217

 * e1000_init_module is the first routine called when the driver is

   218

 * loaded. All it does is register with the PCI subsystem.

   219

 **/

   220

   221

static int __init e1000_init_module(void)

   222

{

   223

	int ret;

   224

	printk(KERN_INFO "%s - version %s\n",

   225

	       e1000_driver_string, e1000_driver_version);

   226

   227

	printk(KERN_INFO "%s\n", e1000_copyright);

   228

   229

	ret = pci_register_driver(&e1000_driver);

   230

	if (copybreak != COPYBREAK_DEFAULT) {

   231

		if (copybreak == 0)

   232

			printk(KERN_INFO "e1000: copybreak disabled\n");

   233

		else

   234

			printk(KERN_INFO "e1000: copybreak enabled for "

   235

			       "packets <= %u bytes\n", copybreak);

   236

	}

   237

	return ret;

   238

}

   239

   240

module_init(e1000_init_module);

   241

   242

/**

   243

 * e1000_exit_module - Driver Exit Cleanup Routine

   244

 *

   245

 * e1000_exit_module is called just before the driver is removed

   246

 * from memory.

   247

 **/

   248

   249

static void __exit e1000_exit_module(void)

   250

{

   251

	pci_unregister_driver(&e1000_driver);

   252

}

   253

   254

module_exit(e1000_exit_module);

   255

   256

static int e1000_request_irq(struct e1000_adapter *adapter)

   257

{

   258

	struct e1000_hw *hw = &adapter->hw;

   259

	struct net_device *netdev = adapter->netdev;

   260

	irq_handler_t handler = e1000_intr;

   261

	int irq_flags = IRQF_SHARED;

   262

	int err;

   263

   264

	if (adapter->ecdev)

   265

		return 0;

   266

   267

	if (hw->mac_type >= e1000_82571) {

   268

		adapter->have_msi = !pci_enable_msi(adapter->pdev);

   269

		if (adapter->have_msi) {

   270

			handler = e1000_intr_msi;

   271

			irq_flags = 0;

   272

		}

   273

	}

   274

   275

	err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,

   276

	                  netdev);

   277

	if (err) {

   278

		if (adapter->have_msi)

   279

			pci_disable_msi(adapter->pdev);

   280

		DPRINTK(PROBE, ERR,

   281

		        "Unable to allocate interrupt Error: %d\n", err);

   282

	}

   283

   284

	return err;

   285

}

   286

   287

static void e1000_free_irq(struct e1000_adapter *adapter)

   288

{

   289

	struct net_device *netdev = adapter->netdev;

   290

   291

	if (adapter->ecdev)

   292

		return;

   293

   294

	free_irq(adapter->pdev->irq, netdev);

   295

   296

	if (adapter->have_msi)

   297

		pci_disable_msi(adapter->pdev);

   298

}

   299

   300

/**

   301

 * e1000_irq_disable - Mask off interrupt generation on the NIC

   302

 * @adapter: board private structure

   303

 **/

   304

   305

static void e1000_irq_disable(struct e1000_adapter *adapter)

   306

{

   307

	struct e1000_hw *hw = &adapter->hw;

   308

   309

	if (adapter->ecdev)

   310

		return;

   311

   312

	ew32(IMC, ~0);

   313

	E1000_WRITE_FLUSH();

   314

	synchronize_irq(adapter->pdev->irq);

   315

}

   316

   317

/**

   318

 * e1000_irq_enable - Enable default interrupt generation settings

   319

 * @adapter: board private structure

   320

 **/

   321

   322

static void e1000_irq_enable(struct e1000_adapter *adapter)

   323

{

   324

	struct e1000_hw *hw = &adapter->hw;

   325

   326

	if (adapter->ecdev)

   327

		return;

   328

   329

	ew32(IMS, IMS_ENABLE_MASK);

   330

	E1000_WRITE_FLUSH();

   331

}

   332

   333

static void e1000_update_mng_vlan(struct e1000_adapter *adapter)

   334

{

   335

	struct e1000_hw *hw = &adapter->hw;

   336

	struct net_device *netdev = adapter->netdev;

   337

	u16 vid = hw->mng_cookie.vlan_id;

   338

	u16 old_vid = adapter->mng_vlan_id;

   339

	if (adapter->vlgrp) {

   340

		if (!vlan_group_get_device(adapter->vlgrp, vid)) {

   341

			if (hw->mng_cookie.status &

   342

				E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {

   343

				e1000_vlan_rx_add_vid(netdev, vid);

   344

				adapter->mng_vlan_id = vid;

   345

			} else

   346

				adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;

   347

   348

			if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&

   349

					(vid != old_vid) &&

   350

			    !vlan_group_get_device(adapter->vlgrp, old_vid))

   351

				e1000_vlan_rx_kill_vid(netdev, old_vid);

   352

		} else

   353

			adapter->mng_vlan_id = vid;

   354

	}

   355

}

   356

   357

/**

   358

 * e1000_release_hw_control - release control of the h/w to f/w

   359

 * @adapter: address of board private structure

   360

 *

   361

 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.

   362

 * For ASF and Pass Through versions of f/w this means that the

   363

 * driver is no longer loaded. For AMT version (only with 82573) i

   364

 * of the f/w this means that the network i/f is closed.

   365

 *

   366

 **/

   367

   368

static void e1000_release_hw_control(struct e1000_adapter *adapter)

   369

{

   370

	u32 ctrl_ext;

   371

	u32 swsm;

   372

	struct e1000_hw *hw = &adapter->hw;

   373

   374

	/* Let firmware taken over control of h/w */

   375

	switch (hw->mac_type) {

   376

	case e1000_82573:

   377

		swsm = er32(SWSM);

   378

		ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);

   379

		break;

   380

	case e1000_82571:

   381

	case e1000_82572:

   382

	case e1000_80003es2lan:

   383

	case e1000_ich8lan:

   384

		ctrl_ext = er32(CTRL_EXT);

   385

		ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);

   386

		break;

   387

	default:

   388

		break;

   389

	}

   390

}

   391

   392

/**

   393

 * e1000_get_hw_control - get control of the h/w from f/w

   394

 * @adapter: address of board private structure

   395

 *

   396

 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.

   397

 * For ASF and Pass Through versions of f/w this means that

   398

 * the driver is loaded. For AMT version (only with 82573)

   399

 * of the f/w this means that the network i/f is open.

   400

 *

   401

 **/

   402

   403

static void e1000_get_hw_control(struct e1000_adapter *adapter)

   404

{

   405

	u32 ctrl_ext;

   406

	u32 swsm;

   407

	struct e1000_hw *hw = &adapter->hw;

   408

   409

	/* Let firmware know the driver has taken over */

   410

	switch (hw->mac_type) {

   411

	case e1000_82573:

   412

		swsm = er32(SWSM);

   413

		ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);

   414

		break;

   415

	case e1000_82571:

   416

	case e1000_82572:

   417

	case e1000_80003es2lan:

   418

	case e1000_ich8lan:

   419

		ctrl_ext = er32(CTRL_EXT);

   420

		ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);

   421

		break;

   422

	default:

   423

		break;

   424

	}

   425

}

   426

   427

static void e1000_init_manageability(struct e1000_adapter *adapter)

   428

{

   429

	struct e1000_hw *hw = &adapter->hw;

   430

   431

	if (adapter->en_mng_pt) {

   432

		u32 manc = er32(MANC);

   433

   434

		/* disable hardware interception of ARP */

   435

		manc &= ~(E1000_MANC_ARP_EN);

   436

   437

		/* enable receiving management packets to the host */

   438

		/* this will probably generate destination unreachable messages

   439

		 * from the host OS, but the packets will be handled on SMBUS */

   440

		if (hw->has_manc2h) {

   441

			u32 manc2h = er32(MANC2H);

   442

   443

			manc |= E1000_MANC_EN_MNG2HOST;

   444

#define E1000_MNG2HOST_PORT_623 (1 << 5)

   445

#define E1000_MNG2HOST_PORT_664 (1 << 6)

   446

			manc2h |= E1000_MNG2HOST_PORT_623;

   447

			manc2h |= E1000_MNG2HOST_PORT_664;

   448

			ew32(MANC2H, manc2h);

   449

		}

   450

   451

		ew32(MANC, manc);

   452

	}

   453

}

   454

   455

static void e1000_release_manageability(struct e1000_adapter *adapter)

   456

{

   457

	struct e1000_hw *hw = &adapter->hw;

   458

   459

	if (adapter->en_mng_pt) {

   460

		u32 manc = er32(MANC);

   461

   462

		/* re-enable hardware interception of ARP */

   463

		manc |= E1000_MANC_ARP_EN;

   464

   465

		if (hw->has_manc2h)

   466

			manc &= ~E1000_MANC_EN_MNG2HOST;

   467

   468

		/* don't explicitly have to mess with MANC2H since

   469

		 * MANC has an enable disable that gates MANC2H */

   470

   471

		ew32(MANC, manc);

   472

	}

   473

}

   474

   475

/**

   476

 * e1000_configure - configure the hardware for RX and TX

   477

 * @adapter = private board structure

   478

 **/

   479

static void e1000_configure(struct e1000_adapter *adapter)

   480

{

   481

	struct net_device *netdev = adapter->netdev;

   482

	int i;

   483

   484

	e1000_set_rx_mode(netdev);

   485

   486

	e1000_restore_vlan(adapter);

   487

	e1000_init_manageability(adapter);

   488

   489

	e1000_configure_tx(adapter);

   490

	e1000_setup_rctl(adapter);

   491

	e1000_configure_rx(adapter);

   492

	/* call E1000_DESC_UNUSED which always leaves

   493

	 * at least 1 descriptor unused to make sure

   494

	 * next_to_use != next_to_clean */

   495

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

   496

		struct e1000_rx_ring *ring = &adapter->rx_ring[i];

   497

		if (adapter->ecdev) {

   498

			/* fill rx ring completely! */

   499

			adapter->alloc_rx_buf(adapter, ring, ring->count);

   500

		} else {

   501

            /* this one leaves the last ring element unallocated! */

   502

			adapter->alloc_rx_buf(adapter, ring,

   503

					E1000_DESC_UNUSED(ring));

   504

		}

   505

	}

   506

   507

	adapter->tx_queue_len = netdev->tx_queue_len;

   508

}

   509

   510

int e1000_up(struct e1000_adapter *adapter)

   511

{

   512

	struct e1000_hw *hw = &adapter->hw;

   513

   514

	/* hardware has been reset, we need to reload some things */

   515

	e1000_configure(adapter);

   516

   517

	clear_bit(__E1000_DOWN, &adapter->flags);

   518

   519

	if (!adapter->ecdev) {

   520

		napi_enable(&adapter->napi);

   521

   522

		e1000_irq_enable(adapter);

   523

   524

		netif_wake_queue(adapter->netdev);

   525

   526

		/* fire a link change interrupt to start the watchdog */

   527

		ew32(ICS, E1000_ICS_LSC);

   528

	}

   529

	return 0;

   530