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

     2

     3

  Intel PRO/1000 Linux driver

     4

  Copyright(c) 1999 - 2009 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,

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  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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  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>

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  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

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

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/* ethtool support for e1000 */

    30

    31

#include <linux/netdevice.h>

    32

#include <linux/ethtool.h>

    33

#include <linux/pci.h>

    34

#include <linux/delay.h>

    35

    36

#include "e1000.h"

    37

    38

enum {NETDEV_STATS, E1000_STATS};

    39

    40

struct e1000_stats {

    41

	char stat_string[ETH_GSTRING_LEN];

    42

	int type;

    43

	int sizeof_stat;

    44

	int stat_offset;

    45

};

    46

    47

#define E1000_STAT(m)		E1000_STATS, \

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				sizeof(((struct e1000_adapter *)0)->m), \

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		      		offsetof(struct e1000_adapter, m)

    50

#define E1000_NETDEV_STAT(m)	NETDEV_STATS, \

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				sizeof(((struct net_device *)0)->m), \

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				offsetof(struct net_device, m)

    53

    54

static const struct e1000_stats e1000_gstrings_stats[] = {

    55

	{ "rx_packets", E1000_STAT(stats.gprc) },

    56

	{ "tx_packets", E1000_STAT(stats.gptc) },

    57

	{ "rx_bytes", E1000_STAT(stats.gorc) },

    58

	{ "tx_bytes", E1000_STAT(stats.gotc) },

    59

	{ "rx_broadcast", E1000_STAT(stats.bprc) },

    60

	{ "tx_broadcast", E1000_STAT(stats.bptc) },

    61

	{ "rx_multicast", E1000_STAT(stats.mprc) },

    62

	{ "tx_multicast", E1000_STAT(stats.mptc) },

    63

	{ "rx_errors", E1000_NETDEV_STAT(stats.rx_errors) },

    64

	{ "tx_errors", E1000_NETDEV_STAT(stats.tx_errors) },

    65

	{ "tx_dropped", E1000_NETDEV_STAT(stats.tx_dropped) },

    66

	{ "multicast", E1000_STAT(stats.mprc) },

    67

	{ "collisions", E1000_STAT(stats.colc) },

    68

	{ "rx_length_errors", E1000_NETDEV_STAT(stats.rx_length_errors) },

    69

	{ "rx_over_errors", E1000_NETDEV_STAT(stats.rx_over_errors) },

    70

	{ "rx_crc_errors", E1000_STAT(stats.crcerrs) },

    71

	{ "rx_frame_errors", E1000_NETDEV_STAT(stats.rx_frame_errors) },

    72

	{ "rx_no_buffer_count", E1000_STAT(stats.rnbc) },

    73

	{ "rx_missed_errors", E1000_STAT(stats.mpc) },

    74

	{ "tx_aborted_errors", E1000_STAT(stats.ecol) },

    75

	{ "tx_carrier_errors", E1000_STAT(stats.tncrs) },

    76

	{ "tx_fifo_errors", E1000_NETDEV_STAT(stats.tx_fifo_errors) },

    77

	{ "tx_heartbeat_errors", E1000_NETDEV_STAT(stats.tx_heartbeat_errors) },

    78

	{ "tx_window_errors", E1000_STAT(stats.latecol) },

    79

	{ "tx_abort_late_coll", E1000_STAT(stats.latecol) },

    80

	{ "tx_deferred_ok", E1000_STAT(stats.dc) },

    81

	{ "tx_single_coll_ok", E1000_STAT(stats.scc) },

    82

	{ "tx_multi_coll_ok", E1000_STAT(stats.mcc) },

    83

	{ "tx_timeout_count", E1000_STAT(tx_timeout_count) },

    84

	{ "tx_restart_queue", E1000_STAT(restart_queue) },

    85

	{ "rx_long_length_errors", E1000_STAT(stats.roc) },

    86

	{ "rx_short_length_errors", E1000_STAT(stats.ruc) },

    87

	{ "rx_align_errors", E1000_STAT(stats.algnerrc) },

    88

	{ "tx_tcp_seg_good", E1000_STAT(stats.tsctc) },

    89

	{ "tx_tcp_seg_failed", E1000_STAT(stats.tsctfc) },

    90

	{ "rx_flow_control_xon", E1000_STAT(stats.xonrxc) },

    91

	{ "rx_flow_control_xoff", E1000_STAT(stats.xoffrxc) },

    92

	{ "tx_flow_control_xon", E1000_STAT(stats.xontxc) },

    93

	{ "tx_flow_control_xoff", E1000_STAT(stats.xofftxc) },

    94

	{ "rx_long_byte_count", E1000_STAT(stats.gorc) },

    95

	{ "rx_csum_offload_good", E1000_STAT(hw_csum_good) },

    96

	{ "rx_csum_offload_errors", E1000_STAT(hw_csum_err) },

    97

	{ "rx_header_split", E1000_STAT(rx_hdr_split) },

    98

	{ "alloc_rx_buff_failed", E1000_STAT(alloc_rx_buff_failed) },

    99

	{ "tx_smbus", E1000_STAT(stats.mgptc) },

   100

	{ "rx_smbus", E1000_STAT(stats.mgprc) },

   101

	{ "dropped_smbus", E1000_STAT(stats.mgpdc) },

   102

	{ "rx_dma_failed", E1000_STAT(rx_dma_failed) },

   103

	{ "tx_dma_failed", E1000_STAT(tx_dma_failed) },

   104

};

   105

   106

#define E1000_GLOBAL_STATS_LEN	ARRAY_SIZE(e1000_gstrings_stats)

   107

#define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN)

   108

static const char e1000_gstrings_test[][ETH_GSTRING_LEN] = {

   109

	"Register test  (offline)", "Eeprom test    (offline)",

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	"Interrupt test (offline)", "Loopback test  (offline)",

   111

	"Link test   (on/offline)"

   112

};

   113

#define E1000_TEST_LEN ARRAY_SIZE(e1000_gstrings_test)

   114

   115

static int e1000_get_settings(struct net_device *netdev,

   116

			      struct ethtool_cmd *ecmd)

   117

{

   118

	struct e1000_adapter *adapter = netdev_priv(netdev);

   119

	struct e1000_hw *hw = &adapter->hw;

   120

	u32 status;

   121

   122

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

   123

   124

		ecmd->supported = (SUPPORTED_10baseT_Half |

   125

				   SUPPORTED_10baseT_Full |

   126

				   SUPPORTED_100baseT_Half |

   127

				   SUPPORTED_100baseT_Full |

   128

				   SUPPORTED_1000baseT_Full |

   129

				   SUPPORTED_Autoneg |

   130

				   SUPPORTED_TP);

   131

		if (hw->phy.type == e1000_phy_ife)

   132

			ecmd->supported &= ~SUPPORTED_1000baseT_Full;

   133

		ecmd->advertising = ADVERTISED_TP;

   134

   135

		if (hw->mac.autoneg == 1) {

   136

			ecmd->advertising |= ADVERTISED_Autoneg;

   137

			/* the e1000 autoneg seems to match ethtool nicely */

   138

			ecmd->advertising |= hw->phy.autoneg_advertised;

   139

		}

   140

   141

		ecmd->port = PORT_TP;

   142

		ecmd->phy_address = hw->phy.addr;

   143

		ecmd->transceiver = XCVR_INTERNAL;

   144

   145

	} else {

   146

		ecmd->supported   = (SUPPORTED_1000baseT_Full |

   147

				     SUPPORTED_FIBRE |

   148

				     SUPPORTED_Autoneg);

   149

   150

		ecmd->advertising = (ADVERTISED_1000baseT_Full |

   151

				     ADVERTISED_FIBRE |

   152

				     ADVERTISED_Autoneg);

   153

   154

		ecmd->port = PORT_FIBRE;

   155

		ecmd->transceiver = XCVR_EXTERNAL;

   156

	}

   157

   158

	status = er32(STATUS);

   159

	if (status & E1000_STATUS_LU) {

   160

		if (status & E1000_STATUS_SPEED_1000)

   161

			ecmd->speed = 1000;

   162

		else if (status & E1000_STATUS_SPEED_100)

   163

			ecmd->speed = 100;

   164

		else

   165

			ecmd->speed = 10;

   166

   167

		if (status & E1000_STATUS_FD)

   168

			ecmd->duplex = DUPLEX_FULL;

   169

		else

   170

			ecmd->duplex = DUPLEX_HALF;

   171

	} else {

   172

		ecmd->speed = -1;

   173

		ecmd->duplex = -1;

   174

	}

   175

   176

	ecmd->autoneg = ((hw->phy.media_type == e1000_media_type_fiber) ||

   177

			 hw->mac.autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;

   178

   179

	/* MDI-X => 2; MDI =>1; Invalid =>0 */

   180

	if ((hw->phy.media_type == e1000_media_type_copper) &&

   181

	    !hw->mac.get_link_status)

   182

		ecmd->eth_tp_mdix = hw->phy.is_mdix ? ETH_TP_MDI_X :

   183

		                                      ETH_TP_MDI;

   184

	else

   185

		ecmd->eth_tp_mdix = ETH_TP_MDI_INVALID;

   186

   187

	return 0;

   188

}

   189

   190

static u32 e1000_get_link(struct net_device *netdev)

   191

{

   192

	struct e1000_adapter *adapter = netdev_priv(netdev);

   193

	struct e1000_mac_info *mac = &adapter->hw.mac;

   194

   195

	/*

   196

	 * If the link is not reported up to netdev, interrupts are disabled,

   197

	 * and so the physical link state may have changed since we last

   198

	 * looked. Set get_link_status to make sure that the true link

   199

	 * state is interrogated, rather than pulling a cached and possibly

   200

	 * stale link state from the driver.

   201

	 */

   202

	if (!netif_carrier_ok(netdev))

   203

		mac->get_link_status = 1;

   204

   205

	return e1000_has_link(adapter);

   206

}

   207

   208

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

   209

{

   210

	struct e1000_mac_info *mac = &adapter->hw.mac;

   211

   212

	mac->autoneg = 0;

   213

   214

	/* Fiber NICs only allow 1000 gbps Full duplex */

   215

	if ((adapter->hw.phy.media_type == e1000_media_type_fiber) &&

   216

		spddplx != (SPEED_1000 + DUPLEX_FULL)) {

   217

		e_err("Unsupported Speed/Duplex configuration\n");

   218

		return -EINVAL;

   219

	}

   220

   221

	switch (spddplx) {

   222

	case SPEED_10 + DUPLEX_HALF:

   223

		mac->forced_speed_duplex = ADVERTISE_10_HALF;

   224

		break;

   225

	case SPEED_10 + DUPLEX_FULL:

   226

		mac->forced_speed_duplex = ADVERTISE_10_FULL;

   227

		break;

   228

	case SPEED_100 + DUPLEX_HALF:

   229

		mac->forced_speed_duplex = ADVERTISE_100_HALF;

   230

		break;

   231

	case SPEED_100 + DUPLEX_FULL:

   232

		mac->forced_speed_duplex = ADVERTISE_100_FULL;

   233

		break;

   234

	case SPEED_1000 + DUPLEX_FULL:

   235

		mac->autoneg = 1;

   236

		adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;

   237

		break;

   238

	case SPEED_1000 + DUPLEX_HALF: /* not supported */

   239

	default:

   240

		e_err("Unsupported Speed/Duplex configuration\n");

   241

		return -EINVAL;

   242

	}

   243

	return 0;

   244

}

   245

   246

static int e1000_set_settings(struct net_device *netdev,

   247

			      struct ethtool_cmd *ecmd)

   248

{

   249

	struct e1000_adapter *adapter = netdev_priv(netdev);

   250

	struct e1000_hw *hw = &adapter->hw;

   251

   252

	/*

   253

	 * When SoL/IDER sessions are active, autoneg/speed/duplex

   254

	 * cannot be changed

   255

	 */

   256

	if (e1000_check_reset_block(hw)) {

   257

		e_err("Cannot change link characteristics when SoL/IDER is "

   258

		      "active.\n");

   259

		return -EINVAL;

   260

	}

   261

   262

	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))

   263

		msleep(1);

   264

   265

	if (ecmd->autoneg == AUTONEG_ENABLE) {

   266

		hw->mac.autoneg = 1;

   267

		if (hw->phy.media_type == e1000_media_type_fiber)

   268

			hw->phy.autoneg_advertised = ADVERTISED_1000baseT_Full |

   269

						     ADVERTISED_FIBRE |

   270

						     ADVERTISED_Autoneg;

   271

		else

   272

			hw->phy.autoneg_advertised = ecmd->advertising |

   273

						     ADVERTISED_TP |

   274

						     ADVERTISED_Autoneg;

   275

		ecmd->advertising = hw->phy.autoneg_advertised;

   276

		if (adapter->fc_autoneg)

   277

			hw->fc.requested_mode = e1000_fc_default;

   278

	} else {

   279

		if (e1000_set_spd_dplx(adapter, ecmd->speed + ecmd->duplex)) {

   280

			clear_bit(__E1000_RESETTING, &adapter->state);

   281

			return -EINVAL;

   282

		}

   283

	}

   284

   285

	/* reset the link */

   286

   287

	if (netif_running(adapter->netdev)) {

   288

		e1000e_down(adapter);

   289

		e1000e_up(adapter);

   290

	} else {

   291

		e1000e_reset(adapter);

   292

	}

   293

   294

	clear_bit(__E1000_RESETTING, &adapter->state);

   295

	return 0;

   296

}

   297

   298

static void e1000_get_pauseparam(struct net_device *netdev,

   299

				 struct ethtool_pauseparam *pause)

   300

{

   301

	struct e1000_adapter *adapter = netdev_priv(netdev);

   302

	struct e1000_hw *hw = &adapter->hw;

   303

   304

	pause->autoneg =

   305

		(adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);

   306

   307

	if (hw->fc.current_mode == e1000_fc_rx_pause) {

   308

		pause->rx_pause = 1;

   309

	} else if (hw->fc.current_mode == e1000_fc_tx_pause) {

   310

		pause->tx_pause = 1;

   311

	} else if (hw->fc.current_mode == e1000_fc_full) {

   312

		pause->rx_pause = 1;

   313

		pause->tx_pause = 1;

   314

	}

   315

}

   316

   317

static int e1000_set_pauseparam(struct net_device *netdev,

   318

				struct ethtool_pauseparam *pause)

   319

{

   320

	struct e1000_adapter *adapter = netdev_priv(netdev);

   321

	struct e1000_hw *hw = &adapter->hw;

   322

	int retval = 0;

   323

   324

	adapter->fc_autoneg = pause->autoneg;

   325

   326

	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))

   327

		msleep(1);

   328

   329

	if (adapter->fc_autoneg == AUTONEG_ENABLE) {

   330

		hw->fc.requested_mode = e1000_fc_default;

   331

		if (netif_running(adapter->netdev)) {

   332

			e1000e_down(adapter);

   333

			e1000e_up(adapter);

   334

		} else {

   335

			e1000e_reset(adapter);

   336

		}

   337

	} else {

   338

		if (pause->rx_pause && pause->tx_pause)

   339

			hw->fc.requested_mode = e1000_fc_full;

   340

		else if (pause->rx_pause && !pause->tx_pause)

   341

			hw->fc.requested_mode = e1000_fc_rx_pause;

   342

		else if (!pause->rx_pause && pause->tx_pause)

   343

			hw->fc.requested_mode = e1000_fc_tx_pause;

   344

		else if (!pause->rx_pause && !pause->tx_pause)

   345

			hw->fc.requested_mode = e1000_fc_none;

   346

   347

		hw->fc.current_mode = hw->fc.requested_mode;

   348

   349

		if (hw->phy.media_type == e1000_media_type_fiber) {

   350

			retval = hw->mac.ops.setup_link(hw);

   351

			/* implicit goto out */

   352

		} else {

   353

			retval = e1000e_force_mac_fc(hw);

   354

			if (retval)

   355

				goto out;

   356

			e1000e_set_fc_watermarks(hw);

   357

		}

   358

	}

   359

   360

out:

   361

	clear_bit(__E1000_RESETTING, &adapter->state);

   362

	return retval;

   363

}

   364

   365

static u32 e1000_get_rx_csum(struct net_device *netdev)

   366

{

   367

	struct e1000_adapter *adapter = netdev_priv(netdev);

   368

	return (adapter->flags & FLAG_RX_CSUM_ENABLED);

   369

}

   370

   371

static int e1000_set_rx_csum(struct net_device *netdev, u32 data)

   372

{

   373

	struct e1000_adapter *adapter = netdev_priv(netdev);

   374

   375

	if (data)

   376

		adapter->flags |= FLAG_RX_CSUM_ENABLED;

   377

	else

   378

		adapter->flags &= ~FLAG_RX_CSUM_ENABLED;

   379

   380

	if (netif_running(netdev))

   381

		e1000e_reinit_locked(adapter);

   382

	else

   383

		e1000e_reset(adapter);

   384

	return 0;

   385

}

   386

   387

static u32 e1000_get_tx_csum(struct net_device *netdev)

   388

{

   389

	return ((netdev->features & NETIF_F_HW_CSUM) != 0);

   390

}

   391

   392

static int e1000_set_tx_csum(struct net_device *netdev, u32 data)

   393

{

   394

	if (data)

   395

		netdev->features |= NETIF_F_HW_CSUM;

   396

	else

   397

		netdev->features &= ~NETIF_F_HW_CSUM;

   398

   399

	return 0;

   400

}

   401

   402

static int e1000_set_tso(struct net_device *netdev, u32 data)

   403

{

   404

	struct e1000_adapter *adapter = netdev_priv(netdev);

   405

   406

	if (data) {

   407

		netdev->features |= NETIF_F_TSO;

   408

		netdev->features |= NETIF_F_TSO6;

   409

	} else {

   410

		netdev->features &= ~NETIF_F_TSO;

   411

		netdev->features &= ~NETIF_F_TSO6;

   412

	}

   413

   414

	e_info("TSO is %s\n", data ? "Enabled" : "Disabled");

   415

	adapter->flags |= FLAG_TSO_FORCE;

   416

	return 0;

   417

}

   418

   419

static u32 e1000_get_msglevel(struct net_device *netdev)

   420

{

   421

	struct e1000_adapter *adapter = netdev_priv(netdev);

   422

	return adapter->msg_enable;

   423

}

   424

   425

static void e1000_set_msglevel(struct net_device *netdev, u32 data)

   426

{

   427

	struct e1000_adapter *adapter = netdev_priv(netdev);

   428

	adapter->msg_enable = data;

   429

}

   430

   431

static int e1000_get_regs_len(struct net_device *netdev)

   432

{

   433

#define E1000_REGS_LEN 32 /* overestimate */

   434

	return E1000_REGS_LEN * sizeof(u32);

   435

}

   436

   437

static void e1000_get_regs(struct net_device *netdev,

   438

			   struct ethtool_regs *regs, void *p)

   439

{

   440

	struct e1000_adapter *adapter = netdev_priv(netdev);

   441

	struct e1000_hw *hw = &adapter->hw;

   442

	u32 *regs_buff = p;

   443

	u16 phy_data;

   444

	u8 revision_id;

   445

   446

	memset(p, 0, E1000_REGS_LEN * sizeof(u32));

   447

   448

	pci_read_config_byte(adapter->pdev, PCI_REVISION_ID, &revision_id);

   449

   450

	regs->version = (1 << 24) | (revision_id << 16) | adapter->pdev->device;

   451

   452

	regs_buff[0]  = er32(CTRL);

   453

	regs_buff[1]  = er32(STATUS);

   454

   455

	regs_buff[2]  = er32(RCTL);

   456

	regs_buff[3]  = er32(RDLEN);

   457

	regs_buff[4]  = er32(RDH);

   458

	regs_buff[5]  = er32(RDT);

   459

	regs_buff[6]  = er32(RDTR);

   460

   461

	regs_buff[7]  = er32(TCTL);

   462

	regs_buff[8]  = er32(TDLEN);

   463

	regs_buff[9]  = er32(TDH);

   464

	regs_buff[10] = er32(TDT);

   465

	regs_buff[11] = er32(TIDV);

   466

   467

	regs_buff[12] = adapter->hw.phy.type;  /* PHY type (IGP=1, M88=0) */

   468

   469

	/* ethtool doesn't use anything past this point, so all this

   470

	 * code is likely legacy junk for apps that may or may not

   471

	 * exist */

   472

	if (hw->phy.type == e1000_phy_m88) {

   473

		e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);

   474

		regs_buff[13] = (u32)phy_data; /* cable length */

   475

		regs_buff[14] = 0;  /* Dummy (to align w/ IGP phy reg dump) */

   476

		regs_buff[15] = 0;  /* Dummy (to align w/ IGP phy reg dump) */

   477

		regs_buff[16] = 0;  /* Dummy (to align w/ IGP phy reg dump) */

   478

		e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);

   479

		regs_buff[17] = (u32)phy_data; /* extended 10bt distance */

   480

		regs_buff[18] = regs_buff[13]; /* cable polarity */

   481

		regs_buff[19] = 0;  /* Dummy (to align w/ IGP phy reg dump) */

   482

		regs_buff[20] = regs_buff[17]; /* polarity correction */

   483

		/* phy receive errors */

   484

		regs_buff[22] = adapter->phy_stats.receive_errors;

   485

		regs_buff[23] = regs_buff[13]; /* mdix mode */

   486

	}

   487

	regs_buff[21] = 0; /* was idle_errors */

   488

	e1e_rphy(hw, PHY_1000T_STATUS, &phy_data);

   489

	regs_buff[24] = (u32)phy_data;  /* phy local receiver status */

   490

	regs_buff[25] = regs_buff[24];  /* phy remote receiver status */

   491

}

   492

   493

static int e1000_get_eeprom_len(struct net_device *netdev)

   494

{

   495

	struct e1000_adapter *adapter = netdev_priv(netdev);

   496

	return adapter->hw.nvm.word_size * 2;

   497

}

   498

   499

static int e1000_get_eeprom(struct net_device *netdev,

   500

			    struct ethtool_eeprom *eeprom, u8 *bytes)

   501

{

   502

	struct e1000_adapter *adapter = netdev_priv(netdev);

   503

	struct e1000_hw *hw = &adapter->hw;

   504

	u16 *eeprom_buff;

   505

	int first_word;

   506

	int last_word;

   507

	int ret_val = 0;

   508

	u16 i;

   509

   510

	if (eeprom->len == 0)

   511

		return -EINVAL;

   512

   513

	eeprom->magic = adapter->pdev->vendor | (adapter->pdev->device << 16);

   514

   515

	first_word = eeprom->offset >> 1;

   516

	last_word = (eeprom->offset + eeprom->len - 1) >> 1;

   517

   518

	eeprom_buff = kmalloc(sizeof(u16) *

   519

			(last_word - first_word + 1), GFP_KERNEL);

   520

	if (!eeprom_buff)

   521

		return -ENOMEM;

   522

   523

	if (hw->nvm.type == e1000_nvm_eeprom_spi) {

   524

		ret_val = e1000_read_nvm(hw, first_word,

   525

					 last_word - first_word + 1,

   526

					 eeprom_buff);

   527

	} else {

   528

		for (i = 0; i < last_word - first_word + 1; i++) {

   529

			ret_val = e1000_read_nvm(hw, first_word + i, 1,