drivers/net/phy/phy.c

   1 /* Framework for configuring and reading PHY devices
   2  * Based on code in sungem_phy.c and gianfar_phy.c
   3  *
   4  * Author: Andy Fleming
   5  *
   6  * Copyright (c) 2004 Freescale Semiconductor, Inc.
   7  * Copyright (c) 2006, 2007  Maciej W. Rozycki
   8  *
   9  * This program is free software; you can redistribute  it and/or modify it
  10  * under  the terms of  the GNU General  Public License as published by the
  11  * Free Software Foundation;  either version 2 of the  License, or (at your
  12  * option) any later version.
  13  *
  14  */
  15
  16 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  17
  18 #include <linux/kernel.h>
  19 #include <linux/string.h>
  20 #include <linux/errno.h>
  21 #include <linux/unistd.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/delay.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/skbuff.h>
  27 #include <linux/mm.h>
  28 #include <linux/module.h>
  29 #include <linux/mii.h>
  30 #include <linux/ethtool.h>
  31 #include <linux/phy.h>
  32 #include <linux/timer.h>
  33 #include <linux/workqueue.h>
  34 #include <linux/mdio.h>
  35 #include <linux/io.h>
  36 #include <linux/uaccess.h>
  37 #include <linux/atomic.h>
  38
  39 #include <asm/irq.h>
  40
  41 static const char *phy_speed_to_str(int speed)
  42 {
  43         switch (speed) {
  44         case SPEED_10:
  45                 return "10Mbps";
  46         case SPEED_100:
  47                 return "100Mbps";
  48         case SPEED_1000:
  49                 return "1Gbps";
  50         case SPEED_2500:
  51                 return "2.5Gbps";
  52         case SPEED_10000:
  53                 return "10Gbps";
  54         case SPEED_UNKNOWN:
  55                 return "Unknown";
  56         default:
  57                 return "Unsupported (update phy.c)";
  58         }
  59 }
  60
  61 #define PHY_STATE_STR(_state)                   \
  62         case PHY_##_state:                      \
  63                 return __stringify(_state);     \
  64
  65 static const char *phy_state_to_str(enum phy_state st)
  66 {
  67         switch (st) {
  68         PHY_STATE_STR(DOWN)
  69         PHY_STATE_STR(STARTING)
  70         PHY_STATE_STR(READY)
  71         PHY_STATE_STR(PENDING)
  72         PHY_STATE_STR(UP)
  73         PHY_STATE_STR(AN)
  74         PHY_STATE_STR(RUNNING)
  75         PHY_STATE_STR(NOLINK)
  76         PHY_STATE_STR(FORCING)
  77         PHY_STATE_STR(CHANGELINK)
  78         PHY_STATE_STR(HALTED)
  79         PHY_STATE_STR(RESUMING)
  80         }
  81
  82         return NULL;
  83 }
  84
  85
  86 /**
  87  * phy_print_status - Convenience function to print out the current phy status
  88  * @phydev: the phy_device struct
  89  */
  90 void phy_print_status(struct phy_device *phydev)
  91 {
  92         if (phydev->link) {
  93                 netdev_info(phydev->attached_dev,
  94                         "Link is Up - %s/%s - flow control %s\n",
  95                         phy_speed_to_str(phydev->speed),
  96                         DUPLEX_FULL == phydev->duplex ? "Full" : "Half",
  97                         phydev->pause ? "rx/tx" : "off");
  98         } else  {
  99                 netdev_info(phydev->attached_dev, "Link is Down\n");
 100         }
 101 }
 102 EXPORT_SYMBOL(phy_print_status);
 103
 104 /**
 105  * phy_clear_interrupt - Ack the phy device's interrupt
 106  * @phydev: the phy_device struct
 107  *
 108  * If the @phydev driver has an ack_interrupt function, call it to
 109  * ack and clear the phy device's interrupt.
 110  *
 111  * Returns 0 on success or < 0 on error.
 112  */
 113 static int phy_clear_interrupt(struct phy_device *phydev)
 114 {
 115         if (phydev->drv->ack_interrupt)
 116                 return phydev->drv->ack_interrupt(phydev);
 117
 118         return 0;
 119 }
 120
 121 /**
 122  * phy_config_interrupt - configure the PHY device for the requested interrupts
 123  * @phydev: the phy_device struct
 124  * @interrupts: interrupt flags to configure for this @phydev
 125  *
 126  * Returns 0 on success or < 0 on error.
 127  */
 128 static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts)
 129 {
 130         phydev->interrupts = interrupts;
 131         if (phydev->drv->config_intr)
 132                 return phydev->drv->config_intr(phydev);
 133
 134         return 0;
 135 }
 136
 137
 138 /**
 139  * phy_aneg_done - return auto-negotiation status
 140  * @phydev: target phy_device struct
 141  *
 142  * Description: Return the auto-negotiation status from this @phydev
 143  * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation
 144  * is still pending.
 145  */
 146 static inline int phy_aneg_done(struct phy_device *phydev)
 147 {
 148         if (phydev->drv->aneg_done)
 149                 return phydev->drv->aneg_done(phydev);
 150
 151         return genphy_aneg_done(phydev);
 152 }
 153
 154 /* A structure for mapping a particular speed and duplex
 155  * combination to a particular SUPPORTED and ADVERTISED value
 156  */
 157 struct phy_setting {
 158         int speed;
 159         int duplex;
 160         u32 setting;
 161 };
 162
 163 /* A mapping of all SUPPORTED settings to speed/duplex */
 164 static const struct phy_setting settings[] = {
 165         {
 166                 .speed = SPEED_10000,
 167                 .duplex = DUPLEX_FULL,
 168                 .setting = SUPPORTED_10000baseKR_Full,
 169         },
 170         {
 171                 .speed = SPEED_10000,
 172                 .duplex = DUPLEX_FULL,
 173                 .setting = SUPPORTED_10000baseKX4_Full,
 174         },
 175         {
 176                 .speed = SPEED_10000,
 177                 .duplex = DUPLEX_FULL,
 178                 .setting = SUPPORTED_10000baseT_Full,
 179         },
 180         {
 181                 .speed = SPEED_2500,
 182                 .duplex = DUPLEX_FULL,
 183                 .setting = SUPPORTED_2500baseX_Full,
 184         },
 185         {
 186                 .speed = SPEED_1000,
 187                 .duplex = DUPLEX_FULL,
 188                 .setting = SUPPORTED_1000baseKX_Full,
 189         },
 190         {
 191                 .speed = SPEED_1000,
 192                 .duplex = DUPLEX_FULL,
 193                 .setting = SUPPORTED_1000baseT_Full,
 194         },
 195         {
 196                 .speed = SPEED_1000,
 197                 .duplex = DUPLEX_HALF,
 198                 .setting = SUPPORTED_1000baseT_Half,
 199         },
 200         {
 201                 .speed = SPEED_100,
 202                 .duplex = DUPLEX_FULL,
 203                 .setting = SUPPORTED_100baseT_Full,
 204         },
 205         {
 206                 .speed = SPEED_100,
 207                 .duplex = DUPLEX_HALF,
 208                 .setting = SUPPORTED_100baseT_Half,
 209         },
 210         {
 211                 .speed = SPEED_10,
 212                 .duplex = DUPLEX_FULL,
 213                 .setting = SUPPORTED_10baseT_Full,
 214         },
 215         {
 216                 .speed = SPEED_10,
 217                 .duplex = DUPLEX_HALF,
 218                 .setting = SUPPORTED_10baseT_Half,
 219         },
 220 };
 221
 222 #define MAX_NUM_SETTINGS ARRAY_SIZE(settings)
 223
 224 /**
 225  * phy_find_setting - find a PHY settings array entry that matches speed & duplex
 226  * @speed: speed to match
 227  * @duplex: duplex to match
 228  *
 229  * Description: Searches the settings array for the setting which
 230  *   matches the desired speed and duplex, and returns the index
 231  *   of that setting.  Returns the index of the last setting if
 232  *   none of the others match.
 233  */
 234 static inline unsigned int phy_find_setting(int speed, int duplex)
 235 {
 236         unsigned int idx = 0;
 237
 238         while (idx < ARRAY_SIZE(settings) &&
 239                (settings[idx].speed != speed || settings[idx].duplex != duplex))
 240                 idx++;
 241
 242         return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1;
 243 }
 244
 245 /**
 246  * phy_find_valid - find a PHY setting that matches the requested features mask
 247  * @idx: The first index in settings[] to search
 248  * @features: A mask of the valid settings
 249  *
 250  * Description: Returns the index of the first valid setting less
 251  *   than or equal to the one pointed to by idx, as determined by
 252  *   the mask in features.  Returns the index of the last setting
 253  *   if nothing else matches.
 254  */
 255 static inline unsigned int phy_find_valid(unsigned int idx, u32 features)
 256 {
 257         while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features))
 258                 idx++;
 259
 260         return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1;
 261 }
 262
 263 /**
 264  * phy_check_valid - check if there is a valid PHY setting which matches
 265  *                   speed, duplex, and feature mask
 266  * @speed: speed to match
 267  * @duplex: duplex to match
 268  * @features: A mask of the valid settings
 269  *
 270  * Description: Returns true if there is a valid setting, false otherwise.
 271  */
 272 static inline bool phy_check_valid(int speed, int duplex, u32 features)
 273 {
 274         unsigned int idx;
 275
 276         idx = phy_find_valid(phy_find_setting(speed, duplex), features);
 277
 278         return settings[idx].speed == speed && settings[idx].duplex == duplex &&
 279                 (settings[idx].setting & features);
 280 }
 281
 282 /**
 283  * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex
 284  * @phydev: the target phy_device struct
 285  *
 286  * Description: Make sure the PHY is set to supported speeds and
 287  *   duplexes.  Drop down by one in this order:  1000/FULL,
 288  *   1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF.
 289  */
 290 static void phy_sanitize_settings(struct phy_device *phydev)
 291 {
 292         u32 features = phydev->supported;
 293         unsigned int idx;
 294
 295         /* Sanitize settings based on PHY capabilities */
 296         if ((features & SUPPORTED_Autoneg) == 0)
 297                 phydev->autoneg = AUTONEG_DISABLE;
 298
 299         idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex),
 300                         features);
 301
 302         phydev->speed = settings[idx].speed;
 303         phydev->duplex = settings[idx].duplex;
 304 }
 305
 306 /**
 307  * phy_ethtool_sset - generic ethtool sset function, handles all the details
 308  * @phydev: target phy_device struct
 309  * @cmd: ethtool_cmd
 310  *
 311  * A few notes about parameter checking:
 312  * - We don't set port or transceiver, so we don't care what they
 313  *   were set to.
 314  * - phy_start_aneg() will make sure forced settings are sane, and
 315  *   choose the next best ones from the ones selected, so we don't
 316  *   care if ethtool tries to give us bad values.
 317  */
 318 int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd)
 319 {
 320         u32 speed = ethtool_cmd_speed(cmd);
 321
 322         if (cmd->phy_address != phydev->mdio.addr)
 323                 return -EINVAL;
 324
 325         /* We make sure that we don't pass unsupported values in to the PHY */
 326         cmd->advertising &= phydev->supported;
 327
 328         /* Verify the settings we care about. */
 329         if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE)
 330                 return -EINVAL;
 331
 332         if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0)
 333                 return -EINVAL;
 334
 335         if (cmd->autoneg == AUTONEG_DISABLE &&
 336             ((speed != SPEED_1000 &&
 337               speed != SPEED_100 &&
 338               speed != SPEED_10) ||
 339              (cmd->duplex != DUPLEX_HALF &&
 340               cmd->duplex != DUPLEX_FULL)))
 341                 return -EINVAL;
 342
 343         phydev->autoneg = cmd->autoneg;
 344
 345         phydev->speed = speed;
 346
 347         phydev->advertising = cmd->advertising;
 348
 349         if (AUTONEG_ENABLE == cmd->autoneg)
 350                 phydev->advertising |= ADVERTISED_Autoneg;
 351         else
 352                 phydev->advertising &= ~ADVERTISED_Autoneg;
 353
 354         phydev->duplex = cmd->duplex;
 355
 356         phydev->mdix = cmd->eth_tp_mdix_ctrl;
 357
 358         /* Restart the PHY */
 359         phy_start_aneg(phydev);
 360
 361         return 0;
 362 }
 363 EXPORT_SYMBOL(phy_ethtool_sset);
 364
 365 int phy_ethtool_ksettings_set(struct phy_device *phydev,
 366                               const struct ethtool_link_ksettings *cmd)
 367 {
 368         u8 autoneg = cmd->base.autoneg;
 369         u8 duplex = cmd->base.duplex;
 370         u32 speed = cmd->base.speed;
 371         u32 advertising;
 372
 373         if (cmd->base.phy_address != phydev->mdio.addr)
 374                 return -EINVAL;
 375
 376         ethtool_convert_link_mode_to_legacy_u32(&advertising,
 377                                                 cmd->link_modes.advertising);
 378
 379         /* We make sure that we don't pass unsupported values in to the PHY */
 380         advertising &= phydev->supported;
 381
 382         /* Verify the settings we care about. */
 383         if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE)
 384                 return -EINVAL;
 385
 386         if (autoneg == AUTONEG_ENABLE && advertising == 0)
 387                 return -EINVAL;
 388
 389         if (autoneg == AUTONEG_DISABLE &&
 390             ((speed != SPEED_1000 &&
 391               speed != SPEED_100 &&
 392               speed != SPEED_10) ||
 393              (duplex != DUPLEX_HALF &&
 394               duplex != DUPLEX_FULL)))
 395                 return -EINVAL;
 396
 397         phydev->autoneg = autoneg;
 398
 399         phydev->speed = speed;
 400
 401         phydev->advertising = advertising;
 402
 403         if (autoneg == AUTONEG_ENABLE)
 404                 phydev->advertising |= ADVERTISED_Autoneg;
 405         else
 406                 phydev->advertising &= ~ADVERTISED_Autoneg;
 407
 408         phydev->duplex = duplex;
 409
 410         phydev->mdix = cmd->base.eth_tp_mdix_ctrl;
 411
 412         /* Restart the PHY */
 413         phy_start_aneg(phydev);
 414
 415         return 0;
 416 }
 417 EXPORT_SYMBOL(phy_ethtool_ksettings_set);
 418
 419 int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd)
 420 {
 421         cmd->supported = phydev->supported;
 422
 423         cmd->advertising = phydev->advertising;
 424         cmd->lp_advertising = phydev->lp_advertising;
 425
 426         ethtool_cmd_speed_set(cmd, phydev->speed);
 427         cmd->duplex = phydev->duplex;
 428         if (phydev->interface == PHY_INTERFACE_MODE_MOCA)
 429                 cmd->port = PORT_BNC;
 430         else
 431                 cmd->port = PORT_MII;
 432         cmd->phy_address = phydev->mdio.addr;
 433         cmd->transceiver = phy_is_internal(phydev) ?
 434                 XCVR_INTERNAL : XCVR_EXTERNAL;
 435         cmd->autoneg = phydev->autoneg;
 436         cmd->eth_tp_mdix_ctrl = phydev->mdix;
 437
 438         return 0;
 439 }
 440 EXPORT_SYMBOL(phy_ethtool_gset);
 441
 442 int phy_ethtool_ksettings_get(struct phy_device *phydev,
 443                               struct ethtool_link_ksettings *cmd)
 444 {
 445         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
 446                                                 phydev->supported);
 447
 448         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
 449                                                 phydev->advertising);
 450
 451         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
 452                                                 phydev->lp_advertising);
 453
 454         cmd->base.speed = phydev->speed;
 455         cmd->base.duplex = phydev->duplex;
 456         if (phydev->interface == PHY_INTERFACE_MODE_MOCA)
 457                 cmd->base.port = PORT_BNC;
 458         else
 459                 cmd->base.port = PORT_MII;
 460
 461         cmd->base.phy_address = phydev->mdio.addr;
 462         cmd->base.autoneg = phydev->autoneg;
 463         cmd->base.eth_tp_mdix_ctrl = phydev->mdix;
 464
 465         return 0;
 466 }
 467 EXPORT_SYMBOL(phy_ethtool_ksettings_get);
 468
 469 /**
 470  * phy_mii_ioctl - generic PHY MII ioctl interface
 471  * @phydev: the phy_device struct
 472  * @ifr: &struct ifreq for socket ioctl's
 473  * @cmd: ioctl cmd to execute
 474  *
 475  * Note that this function is currently incompatible with the
 476  * PHYCONTROL layer.  It changes registers without regard to
 477  * current state.  Use at own risk.
 478  */
 479 int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd)
 480 {
 481         struct mii_ioctl_data *mii_data = if_mii(ifr);
 482         u16 val = mii_data->val_in;
 483         bool change_autoneg = false;
 484
 485         switch (cmd) {
 486         case SIOCGMIIPHY:
 487                 mii_data->phy_id = phydev->mdio.addr;
 488                 /* fall through */
 489
 490         case SIOCGMIIREG:
 491                 mii_data->val_out = mdiobus_read(phydev->mdio.bus,
 492                                                  mii_data->phy_id,
 493                                                  mii_data->reg_num);
 494                 return 0;
 495
 496         case SIOCSMIIREG:
 497                 if (mii_data->phy_id == phydev->mdio.addr) {
 498                         switch (mii_data->reg_num) {
 499                         case MII_BMCR:
 500                                 if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) {
 501                                         if (phydev->autoneg == AUTONEG_ENABLE)
 502                                                 change_autoneg = true;
 503                                         phydev->autoneg = AUTONEG_DISABLE;
 504                                         if (val & BMCR_FULLDPLX)
 505                                                 phydev->duplex = DUPLEX_FULL;
 506                                         else
 507                                                 phydev->duplex = DUPLEX_HALF;
 508                                         if (val & BMCR_SPEED1000)
 509                                                 phydev->speed = SPEED_1000;
 510                                         else if (val & BMCR_SPEED100)
 511                                                 phydev->speed = SPEED_100;
 512                                         else phydev->speed = SPEED_10;
 513                                 }
 514                                 else {
 515                                         if (phydev->autoneg == AUTONEG_DISABLE)
 516                                                 change_autoneg = true;
 517                                         phydev->autoneg = AUTONEG_ENABLE;
 518                                 }
 519                                 break;
 520                         case MII_ADVERTISE:
 521                                 phydev->advertising = mii_adv_to_ethtool_adv_t(val);
 522                                 change_autoneg = true;
 523                                 break;
 524                         default:
 525                                 /* do nothing */
 526                                 break;
 527                         }
 528                 }
 529
 530                 mdiobus_write(phydev->mdio.bus, mii_data->phy_id,
 531                               mii_data->reg_num, val);
 532
 533                 if (mii_data->phy_id == phydev->mdio.addr &&
 534                     mii_data->reg_num == MII_BMCR &&
 535                     val & BMCR_RESET)
 536                         return phy_init_hw(phydev);
 537
 538                 if (change_autoneg)
 539                         return phy_start_aneg(phydev);
 540
 541                 return 0;
 542
 543         case SIOCSHWTSTAMP:
 544                 if (phydev->drv->hwtstamp)
 545                         return phydev->drv->hwtstamp(phydev, ifr);
 546                 /* fall through */
 547
 548         default:
 549                 return -EOPNOTSUPP;
 550         }
 551 }
 552 EXPORT_SYMBOL(phy_mii_ioctl);
 553
 554 /**
 555  * phy_start_aneg - start auto-negotiation for this PHY device
 556  * @phydev: the phy_device struct
 557  *
 558  * Description: Sanitizes the settings (if we're not autonegotiating
 559  *   them), and then calls the driver's config_aneg function.
 560  *   If the PHYCONTROL Layer is operating, we change the state to
 561  *   reflect the beginning of Auto-negotiation or forcing.
 562  */
 563 int phy_start_aneg(struct phy_device *phydev)
 564 {
 565         int err;
 566
 567         mutex_lock(&phydev->lock);
 568
 569         if (AUTONEG_DISABLE == phydev->autoneg)
 570                 phy_sanitize_settings(phydev);
 571
 572         /* Invalidate LP advertising flags */
 573         phydev->lp_advertising = 0;
 574
 575         err = phydev->drv->config_aneg(phydev);
 576         if (err < 0)
 577                 goto out_unlock;
 578
 579         if (phydev->state != PHY_HALTED) {
 580                 if (AUTONEG_ENABLE == phydev->autoneg) {
 581                         phydev->state = PHY_AN;
 582                         phydev->link_timeout = PHY_AN_TIMEOUT;
 583                 } else {
 584                         phydev->state = PHY_FORCING;
 585                         phydev->link_timeout = PHY_FORCE_TIMEOUT;
 586                 }
 587         }
 588
 589 out_unlock:
 590         mutex_unlock(&phydev->lock);
 591         return err;
 592 }
 593 EXPORT_SYMBOL(phy_start_aneg);
 594
 595 /**
 596  * phy_start_machine - start PHY state machine tracking
 597  * @phydev: the phy_device struct
 598  *
 599  * Description: The PHY infrastructure can run a state machine
 600  *   which tracks whether the PHY is starting up, negotiating,
 601  *   etc.  This function starts the timer which tracks the state
 602  *   of the PHY.  If you want to maintain your own state machine,
 603  *   do not call this function.
 604  */
 605 void phy_start_machine(struct phy_device *phydev)
 606 {
 607         queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ);
 608 }
 609
 610 /**
 611  * phy_stop_machine - stop the PHY state machine tracking
 612  * @phydev: target phy_device struct
 613  *
 614  * Description: Stops the state machine timer, sets the state to UP
 615  *   (unless it wasn't up yet). This function must be called BEFORE
 616  *   phy_detach.
 617  */
 618 void phy_stop_machine(struct phy_device *phydev)
 619 {
 620         cancel_delayed_work_sync(&phydev->state_queue);
 621
 622         mutex_lock(&phydev->lock);
 623         if (phydev->state > PHY_UP)
 624                 phydev->state = PHY_UP;
 625         mutex_unlock(&phydev->lock);
 626 }
 627
 628 /**
 629  * phy_error - enter HALTED state for this PHY device
 630  * @phydev: target phy_device struct
 631  *
 632  * Moves the PHY to the HALTED state in response to a read
 633  * or write error, and tells the controller the link is down.
 634  * Must not be called from interrupt context, or while the
 635  * phydev->lock is held.
 636  */
 637 static void phy_error(struct phy_device *phydev)
 638 {
 639         mutex_lock(&phydev->lock);
 640         phydev->state = PHY_HALTED;
 641         mutex_unlock(&phydev->lock);
 642 }
 643
 644 /**
 645  * phy_interrupt - PHY interrupt handler
 646  * @irq: interrupt line
 647  * @phy_dat: phy_device pointer
 648  *
 649  * Description: When a PHY interrupt occurs, the handler disables
 650  * interrupts, and schedules a work task to clear the interrupt.
 651  */
 652 static irqreturn_t phy_interrupt(int irq, void *phy_dat)
 653 {
 654         struct phy_device *phydev = phy_dat;
 655
 656         if (PHY_HALTED == phydev->state)
 657                 return IRQ_NONE;                /* It can't be ours.  */
 658
 659         /* The MDIO bus is not allowed to be written in interrupt
 660          * context, so we need to disable the irq here.  A work
 661          * queue will write the PHY to disable and clear the
 662          * interrupt, and then reenable the irq line.
 663          */
 664         disable_irq_nosync(irq);
 665         atomic_inc(&phydev->irq_disable);
 666
 667         queue_work(system_power_efficient_wq, &phydev->phy_queue);
 668
 669         return IRQ_HANDLED;
 670 }
 671
 672 /**
 673  * phy_enable_interrupts - Enable the interrupts from the PHY side
 674  * @phydev: target phy_device struct
 675  */
 676 static int phy_enable_interrupts(struct phy_device *phydev)
 677 {
 678         int err = phy_clear_interrupt(phydev);
 679
 680         if (err < 0)
 681                 return err;
 682
 683         return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
 684 }
 685
 686 /**
 687  * phy_disable_interrupts - Disable the PHY interrupts from the PHY side
 688  * @phydev: target phy_device struct
 689  */
 690 static int phy_disable_interrupts(struct phy_device *phydev)
 691 {
 692         int err;
 693
 694         /* Disable PHY interrupts */
 695         err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
 696         if (err)
 697                 goto phy_err;
 698
 699         /* Clear the interrupt */
 700         err = phy_clear_interrupt(phydev);
 701         if (err)
 702                 goto phy_err;
 703
 704         return 0;
 705
 706 phy_err:
 707         phy_error(phydev);
 708
 709         return err;
 710 }
 711
 712 /**
 713  * phy_start_interrupts - request and enable interrupts for a PHY device
 714  * @phydev: target phy_device struct
 715  *
 716  * Description: Request the interrupt for the given PHY.
 717  *   If this fails, then we set irq to PHY_POLL.
 718  *   Otherwise, we enable the interrupts in the PHY.
 719  *   This should only be called with a valid IRQ number.
 720  *   Returns 0 on success or < 0 on error.
 721  */
 722 int phy_start_interrupts(struct phy_device *phydev)
 723 {
 724         atomic_set(&phydev->irq_disable, 0);
 725         if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt",
 726                         phydev) < 0) {
 727                 pr_warn("%s: Can't get IRQ %d (PHY)\n",
 728                         phydev->mdio.bus->name, phydev->irq);
 729                 phydev->irq = PHY_POLL;
 730                 return 0;
 731         }
 732
 733         return phy_enable_interrupts(phydev);
 734 }
 735 EXPORT_SYMBOL(phy_start_interrupts);
 736
 737 /**
 738  * phy_stop_interrupts - disable interrupts from a PHY device
 739  * @phydev: target phy_device struct
 740  */
 741 int phy_stop_interrupts(struct phy_device *phydev)
 742 {
 743         int err = phy_disable_interrupts(phydev);
 744
 745         if (err)
 746                 phy_error(phydev);
 747
 748         free_irq(phydev->irq, phydev);
 749
 750         /* Cannot call flush_scheduled_work() here as desired because
 751          * of rtnl_lock(), but we do not really care about what would
 752          * be done, except from enable_irq(), so cancel any work
 753          * possibly pending and take care of the matter below.
 754          */
 755         cancel_work_sync(&phydev->phy_queue);
 756         /* If work indeed has been cancelled, disable_irq() will have
 757          * been left unbalanced from phy_interrupt() and enable_irq()
 758          * has to be called so that other devices on the line work.
 759          */
 760         while (atomic_dec_return(&phydev->irq_disable) >= 0)
 761                 enable_irq(phydev->irq);
 762
 763         return err;
 764 }
 765 EXPORT_SYMBOL(phy_stop_interrupts);
 766
 767 /**
 768  * phy_change - Scheduled by the phy_interrupt/timer to handle PHY changes
 769  * @work: work_struct that describes the work to be done
 770  */
 771 void phy_change(struct work_struct *work)
 772 {
 773         struct phy_device *phydev =
 774                 container_of(work, struct phy_device, phy_queue);
 775
 776         if (phy_interrupt_is_valid(phydev)) {
 777                 if (phydev->drv->did_interrupt &&
 778                     !phydev->drv->did_interrupt(phydev))
 779                         goto ignore;
 780
 781                 if (phy_disable_interrupts(phydev))
 782                         goto phy_err;
 783         }
 784
 785         mutex_lock(&phydev->lock);
 786         if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state))
 787                 phydev->state = PHY_CHANGELINK;
 788         mutex_unlock(&phydev->lock);
 789
 790         if (phy_interrupt_is_valid(phydev)) {
 791                 atomic_dec(&phydev->irq_disable);
 792                 enable_irq(phydev->irq);
 793
 794                 /* Reenable interrupts */
 795                 if (PHY_HALTED != phydev->state &&
 796                     phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED))
 797                         goto irq_enable_err;
 798         }
 799
 800         /* reschedule state queue work to run as soon as possible */
 801         cancel_delayed_work_sync(&phydev->state_queue);
 802         queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0);
 803         return;
 804
 805 ignore:
 806         atomic_dec(&phydev->irq_disable);
 807         enable_irq(phydev->irq);
 808         return;
 809
 810 irq_enable_err:
 811         disable_irq(phydev->irq);
 812         atomic_inc(&phydev->irq_disable);
 813 phy_err:
 814         phy_error(phydev);
 815 }
 816
 817 /**
 818  * phy_stop - Bring down the PHY link, and stop checking the status
 819  * @phydev: target phy_device struct
 820  */
 821 void phy_stop(struct phy_device *phydev)
 822 {
 823         mutex_lock(&phydev->lock);
 824
 825         if (PHY_HALTED == phydev->state)
 826                 goto out_unlock;
 827
 828         if (phy_interrupt_is_valid(phydev)) {
 829                 /* Disable PHY Interrupts */
 830                 phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
 831
 832                 /* Clear any pending interrupts */
 833                 phy_clear_interrupt(phydev);
 834         }
 835
 836         phydev->state = PHY_HALTED;
 837
 838 out_unlock:
 839         mutex_unlock(&phydev->lock);
 840
 841         /* Cannot call flush_scheduled_work() here as desired because
 842          * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change()
 843          * will not reenable interrupts.
 844          */
 845 }
 846 EXPORT_SYMBOL(phy_stop);
 847
 848 /**
 849  * phy_start - start or restart a PHY device
 850  * @phydev: target phy_device struct
 851  *
 852  * Description: Indicates the attached device's readiness to
 853  *   handle PHY-related work.  Used during startup to start the
 854  *   PHY, and after a call to phy_stop() to resume operation.
 855  *   Also used to indicate the MDIO bus has cleared an error
 856  *   condition.
 857  */
 858 void phy_start(struct phy_device *phydev)
 859 {
 860         bool do_resume = false;
 861         int err = 0;
 862
 863         mutex_lock(&phydev->lock);
 864
 865         switch (phydev->state) {
 866         case PHY_STARTING:
 867                 phydev->state = PHY_PENDING;
 868                 break;
 869         case PHY_READY:
 870                 phydev->state = PHY_UP;
 871                 break;
 872         case PHY_HALTED:
 873                 /* make sure interrupts are re-enabled for the PHY */
 874                 if (phydev->irq != PHY_POLL) {
 875                         err = phy_enable_interrupts(phydev);
 876                         if (err < 0)
 877                                 break;
 878                 }
 879
 880                 phydev->state = PHY_RESUMING;
 881                 do_resume = true;
 882                 break;
 883         default:
 884                 break;
 885         }
 886         mutex_unlock(&phydev->lock);
 887
 888         /* if phy was suspended, bring the physical link up again */
 889         if (do_resume)
 890                 phy_resume(phydev);
 891 }
 892 EXPORT_SYMBOL(phy_start);
 893
 894 /**
 895  * phy_state_machine - Handle the state machine
 896  * @work: work_struct that describes the work to be done
 897  */
 898 void phy_state_machine(struct work_struct *work)
 899 {
 900         struct delayed_work *dwork = to_delayed_work(work);
 901         struct phy_device *phydev =
 902                         container_of(dwork, struct phy_device, state_queue);
 903         bool needs_aneg = false, do_suspend = false;
 904         enum phy_state old_state;
 905         int err = 0;
 906         int old_link;
 907
 908         mutex_lock(&phydev->lock);
 909
 910         old_state = phydev->state;
 911
 912         if (phydev->drv->link_change_notify)
 913                 phydev->drv->link_change_notify(phydev);
 914
 915         switch (phydev->state) {
 916         case PHY_DOWN:
 917         case PHY_STARTING:
 918         case PHY_READY:
 919         case PHY_PENDING:
 920                 break;
 921         case PHY_UP:
 922                 needs_aneg = true;
 923
 924                 phydev->link_timeout = PHY_AN_TIMEOUT;
 925
 926                 break;
 927         case PHY_AN:
 928                 err = phy_read_status(phydev);
 929                 if (err < 0)
 930                         break;
 931
 932                 /* If the link is down, give up on negotiation for now */
 933                 if (!phydev->link) {
 934                         phydev->state = PHY_NOLINK;
 935                         netif_carrier_off(phydev->attached_dev);
 936                         phydev->adjust_link(phydev->attached_dev);
 937                         break;
 938                 }
 939
 940                 /* Check if negotiation is done.  Break if there's an error */
 941                 err = phy_aneg_done(phydev);
 942                 if (err < 0)
 943                         break;
 944
 945                 /* If AN is done, we're running */
 946                 if (err > 0) {
 947                         phydev->state = PHY_RUNNING;
 948                         netif_carrier_on(phydev->attached_dev);
 949                         phydev->adjust_link(phydev->attached_dev);
 950
 951                 } else if (0 == phydev->link_timeout--)
 952                         needs_aneg = true;
 953                 break;
 954         case PHY_NOLINK:
 955                 if (phy_interrupt_is_valid(phydev))
 956                         break;
 957
 958                 err = phy_read_status(phydev);
 959                 if (err)
 960                         break;
 961
 962                 if (phydev->link) {
 963                         if (AUTONEG_ENABLE == phydev->autoneg) {
 964                                 err = phy_aneg_done(phydev);
 965                                 if (err < 0)
 966                                         break;
 967
 968                                 if (!err) {
 969                                         phydev->state = PHY_AN;
 970                                         phydev->link_timeout = PHY_AN_TIMEOUT;
 971                                         break;
 972                                 }
 973                         }
 974                         phydev->state = PHY_RUNNING;
 975                         netif_carrier_on(phydev->attached_dev);
 976                         phydev->adjust_link(phydev->attached_dev);
 977                 }
 978                 break;
 979         case PHY_FORCING:
 980                 err = genphy_update_link(phydev);
 981                 if (err)
 982                         break;
 983
 984                 if (phydev->link) {
 985                         phydev->state = PHY_RUNNING;
 986                         netif_carrier_on(phydev->attached_dev);
 987                 } else {
 988                         if (0 == phydev->link_timeout--)
 989                                 needs_aneg = true;
 990                 }
 991
 992                 phydev->adjust_link(phydev->attached_dev);
 993                 break;
 994         case PHY_RUNNING:
 995                 /* Only register a CHANGE if we are polling and link changed
 996                  * since latest checking.
 997                  */
 998                 if (phydev->irq == PHY_POLL) {
 999                         old_link = phydev->link;
1000                         err = phy_read_status(phydev);
1001                         if (err)
1002                                 break;
1003
1004                         if (old_link != phydev->link)
1005                                 phydev->state = PHY_CHANGELINK;
1006                 }
1007                 break;
1008         case PHY_CHANGELINK:
1009                 err = phy_read_status(phydev);
1010                 if (err)
1011                         break;
1012
1013                 if (phydev->link) {
1014                         phydev->state = PHY_RUNNING;
1015                         netif_carrier_on(phydev->attached_dev);
1016                 } else {
1017                         phydev->state = PHY_NOLINK;
1018                         netif_carrier_off(phydev->attached_dev);
1019                 }
1020
1021                 phydev->adjust_link(phydev->attached_dev);
1022
1023                 if (phy_interrupt_is_valid(phydev))
1024                         err = phy_config_interrupt(phydev,
1025                                                    PHY_INTERRUPT_ENABLED);
1026                 break;
1027         case PHY_HALTED:
1028                 if (phydev->link) {
1029                         phydev->link = 0;
1030                         netif_carrier_off(phydev->attached_dev);
1031                         phydev->adjust_link(phydev->attached_dev);
1032                         do_suspend = true;
1033                 }
1034                 break;
1035         case PHY_RESUMING:
1036                 if (AUTONEG_ENABLE == phydev->autoneg) {
1037                         err = phy_aneg_done(phydev);
1038                         if (err < 0)
1039                                 break;
1040
1041                         /* err > 0 if AN is done.
1042                          * Otherwise, it's 0, and we're  still waiting for AN
1043                          */
1044                         if (err > 0) {
1045                                 err = phy_read_status(phydev);
1046                                 if (err)
1047                                         break;
1048
1049                                 if (phydev->link) {
1050                                         phydev->state = PHY_RUNNING;
1051                                         netif_carrier_on(phydev->attached_dev);
1052                                 } else  {
1053                                         phydev->state = PHY_NOLINK;
1054                                 }
1055                                 phydev->adjust_link(phydev->attached_dev);
1056                         } else {
1057                                 phydev->state = PHY_AN;
1058                                 phydev->link_timeout = PHY_AN_TIMEOUT;
1059                         }
1060                 } else {
1061                         err = phy_read_status(phydev);
1062                         if (err)
1063                                 break;
1064
1065                         if (phydev->link) {
1066                                 phydev->state = PHY_RUNNING;
1067                                 netif_carrier_on(phydev->attached_dev);
1068                         } else  {
1069                                 phydev->state = PHY_NOLINK;
1070                         }
1071                         phydev->adjust_link(phydev->attached_dev);
1072                 }
1073                 break;
1074         }
1075
1076         mutex_unlock(&phydev->lock);
1077
1078         if (needs_aneg)
1079                 err = phy_start_aneg(phydev);
1080         else if (do_suspend)
1081                 phy_suspend(phydev);
1082
1083         if (err < 0)
1084                 phy_error(phydev);
1085
1086         phydev_dbg(phydev, "PHY state change %s -> %s\n",
1087                    phy_state_to_str(old_state),
1088                    phy_state_to_str(phydev->state));
1089
1090         /* Only re-schedule a PHY state machine change if we are polling the
1091          * PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving
1092          * between states from phy_mac_interrupt()
1093          */
1094         if (phydev->irq == PHY_POLL)
1095                 queue_delayed_work(system_power_efficient_wq, &phydev->state_queue,
1096                                    PHY_STATE_TIME * HZ);
1097 }
1098
1099 void phy_mac_interrupt(struct phy_device *phydev, int new_link)
1100 {
1101         phydev->link = new_link;
1102
1103         /* Trigger a state machine change */
1104         queue_work(system_power_efficient_wq, &phydev->phy_queue);
1105 }
1106 EXPORT_SYMBOL(phy_mac_interrupt);
1107
1108 static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad,
1109                                     int addr)
1110 {
1111         /* Write the desired MMD Devad */
1112         bus->write(bus, addr, MII_MMD_CTRL, devad);
1113
1114         /* Write the desired MMD register address */
1115         bus->write(bus, addr, MII_MMD_DATA, prtad);
1116
1117         /* Select the Function : DATA with no post increment */
1118         bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
1119 }
1120
1121 /**
1122  * phy_read_mmd_indirect - reads data from the MMD registers
1123  * @phydev: The PHY device bus
1124  * @prtad: MMD Address
1125  * @devad: MMD DEVAD
1126  *
1127  * Description: it reads data from the MMD registers (clause 22 to access to
1128  * clause 45) of the specified phy address.
1129  * To read these register we have:
1130  * 1) Write reg 13 // DEVAD
1131  * 2) Write reg 14 // MMD Address
1132  * 3) Write reg 13 // MMD Data Command for MMD DEVAD
1133  * 3) Read  reg 14 // Read MMD data
1134  */
1135 int phy_read_mmd_indirect(struct phy_device *phydev, int prtad, int devad)
1136 {
1137         struct phy_driver *phydrv = phydev->drv;
1138         int addr = phydev->mdio.addr;
1139         int value = -1;
1140
1141         if (!phydrv->read_mmd_indirect) {
1142                 struct mii_bus *bus = phydev->mdio.bus;
1143
1144                 mutex_lock(&bus->mdio_lock);
1145                 mmd_phy_indirect(bus, prtad, devad, addr);
1146
1147                 /* Read the content of the MMD's selected register */
1148                 value = bus->read(bus, addr, MII_MMD_DATA);
1149                 mutex_unlock(&bus->mdio_lock);
1150         } else {
1151                 value = phydrv->read_mmd_indirect(phydev, prtad, devad, addr);
1152         }
1153         return value;
1154 }
1155 EXPORT_SYMBOL(phy_read_mmd_indirect);
1156
1157 /**
1158  * phy_write_mmd_indirect - writes data to the MMD registers
1159  * @phydev: The PHY device
1160  * @prtad: MMD Address
1161  * @devad: MMD DEVAD
1162  * @data: data to write in the MMD register
1163  *
1164  * Description: Write data from the MMD registers of the specified
1165  * phy address.
1166  * To write these register we have:
1167  * 1) Write reg 13 // DEVAD
1168  * 2) Write reg 14 // MMD Address
1169  * 3) Write reg 13 // MMD Data Command for MMD DEVAD
1170  * 3) Write reg 14 // Write MMD data
1171  */
1172 void phy_write_mmd_indirect(struct phy_device *phydev, int prtad,
1173                                    int devad, u32 data)
1174 {
1175         struct phy_driver *phydrv = phydev->drv;
1176         int addr = phydev->mdio.addr;
1177
1178         if (!phydrv->write_mmd_indirect) {
1179                 struct mii_bus *bus = phydev->mdio.bus;
1180
1181                 mutex_lock(&bus->mdio_lock);
1182                 mmd_phy_indirect(bus, prtad, devad, addr);
1183
1184                 /* Write the data into MMD's selected register */
1185                 bus->write(bus, addr, MII_MMD_DATA, data);
1186                 mutex_unlock(&bus->mdio_lock);
1187         } else {
1188                 phydrv->write_mmd_indirect(phydev, prtad, devad, addr, data);
1189         }
1190 }
1191 EXPORT_SYMBOL(phy_write_mmd_indirect);
1192
1193 /**
1194  * phy_init_eee - init and check the EEE feature
1195  * @phydev: target phy_device struct
1196  * @clk_stop_enable: PHY may stop the clock during LPI
1197  *
1198  * Description: it checks if the Energy-Efficient Ethernet (EEE)
1199  * is supported by looking at the MMD registers 3.20 and 7.60/61
1200  * and it programs the MMD register 3.0 setting the "Clock stop enable"
1201  * bit if required.
1202  */
1203 int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable)
1204 {
1205         /* According to 802.3az,the EEE is supported only in full duplex-mode.
1206          * Also EEE feature is active when core is operating with MII, GMII
1207          * or RGMII (all kinds). Internal PHYs are also allowed to proceed and
1208          * should return an error if they do not support EEE.
1209          */
1210         if ((phydev->duplex == DUPLEX_FULL) &&
1211             ((phydev->interface == PHY_INTERFACE_MODE_MII) ||
1212             (phydev->interface == PHY_INTERFACE_MODE_GMII) ||
1213              phy_interface_is_rgmii(phydev) ||
1214              phy_is_internal(phydev))) {
1215                 int eee_lp, eee_cap, eee_adv;
1216                 u32 lp, cap, adv;
1217                 int status;
1218
1219                 /* Read phy status to properly get the right settings */
1220                 status = phy_read_status(phydev);
1221                 if (status)
1222                         return status;
1223
1224                 /* First check if the EEE ability is supported */
1225                 eee_cap = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE,
1226                                                 MDIO_MMD_PCS);
1227                 if (eee_cap <= 0)
1228                         goto eee_exit_err;
1229
1230                 cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
1231                 if (!cap)
1232                         goto eee_exit_err;
1233
1234                 /* Check which link settings negotiated and verify it in
1235                  * the EEE advertising registers.
1236                  */
1237                 eee_lp = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE,
1238                                                MDIO_MMD_AN);
1239                 if (eee_lp <= 0)
1240                         goto eee_exit_err;
1241
1242                 eee_adv = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV,
1243                                                 MDIO_MMD_AN);
1244                 if (eee_adv <= 0)
1245                         goto eee_exit_err;
1246
1247                 adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv);
1248                 lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp);
1249                 if (!phy_check_valid(phydev->speed, phydev->duplex, lp & adv))
1250                         goto eee_exit_err;
1251
1252                 if (clk_stop_enable) {
1253                         /* Configure the PHY to stop receiving xMII
1254                          * clock while it is signaling LPI.
1255                          */
1256                         int val = phy_read_mmd_indirect(phydev, MDIO_CTRL1,
1257                                                         MDIO_MMD_PCS);
1258                         if (val < 0)
1259                                 return val;
1260
1261                         val |= MDIO_PCS_CTRL1_CLKSTOP_EN;
1262                         phy_write_mmd_indirect(phydev, MDIO_CTRL1,
1263                                                MDIO_MMD_PCS, val);
1264                 }
1265
1266                 return 0; /* EEE supported */
1267         }
1268 eee_exit_err:
1269         return -EPROTONOSUPPORT;
1270 }
1271 EXPORT_SYMBOL(phy_init_eee);
1272
1273 /**
1274  * phy_get_eee_err - report the EEE wake error count
1275  * @phydev: target phy_device struct
1276  *
1277  * Description: it is to report the number of time where the PHY
1278  * failed to complete its normal wake sequence.
1279  */
1280 int phy_get_eee_err(struct phy_device *phydev)
1281 {
1282         return phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_WK_ERR, MDIO_MMD_PCS);
1283 }
1284 EXPORT_SYMBOL(phy_get_eee_err);
1285
1286 /**
1287  * phy_ethtool_get_eee - get EEE supported and status
1288  * @phydev: target phy_device struct
1289  * @data: ethtool_eee data
1290  *
1291  * Description: it reportes the Supported/Advertisement/LP Advertisement
1292  * capabilities.
1293  */
1294 int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data)
1295 {
1296         int val;
1297
1298         /* Get Supported EEE */
1299         val = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE, MDIO_MMD_PCS);
1300         if (val < 0)
1301                 return val;
1302         data->supported = mmd_eee_cap_to_ethtool_sup_t(val);
1303
1304         /* Get advertisement EEE */
1305         val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN);
1306         if (val < 0)
1307                 return val;
1308         data->advertised = mmd_eee_adv_to_ethtool_adv_t(val);
1309
1310         /* Get LP advertisement EEE */
1311         val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE, MDIO_MMD_AN);
1312         if (val < 0)
1313                 return val;
1314         data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);
1315
1316         return 0;
1317 }
1318 EXPORT_SYMBOL(phy_ethtool_get_eee);
1319
1320 /**
1321  * phy_ethtool_set_eee - set EEE supported and status
1322  * @phydev: target phy_device struct
1323  * @data: ethtool_eee data
1324  *
1325  * Description: it is to program the Advertisement EEE register.
1326  */
1327 int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data)
1328 {
1329         int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised);
1330
1331         phy_write_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN, val);
1332
1333         return 0;
1334 }
1335 EXPORT_SYMBOL(phy_ethtool_set_eee);
1336
1337 int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1338 {
1339         if (phydev->drv->set_wol)
1340                 return phydev->drv->set_wol(phydev, wol);
1341
1342         return -EOPNOTSUPP;
1343 }
1344 EXPORT_SYMBOL(phy_ethtool_set_wol);
1345
1346 void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1347 {
1348         if (phydev->drv->get_wol)
1349                 phydev->drv->get_wol(phydev, wol);
1350 }
1351 EXPORT_SYMBOL(phy_ethtool_get_wol);
1352
1353 int phy_ethtool_get_link_ksettings(struct net_device *ndev,
1354                                    struct ethtool_link_ksettings *cmd)
1355 {
1356         struct phy_device *phydev = ndev->phydev;
1357
1358         if (!phydev)
1359                 return -ENODEV;
1360
1361         return phy_ethtool_ksettings_get(phydev, cmd);
1362 }
1363 EXPORT_SYMBOL(phy_ethtool_get_link_ksettings);
1364
1365 int phy_ethtool_set_link_ksettings(struct net_device *ndev,
1366                                    const struct ethtool_link_ksettings *cmd)
1367 {
1368         struct phy_device *phydev = ndev->phydev;
1369
1370         if (!phydev)
1371                 return -ENODEV;
1372
1373         return phy_ethtool_ksettings_set(phydev, cmd);
1374 }
1375 EXPORT_SYMBOL(phy_ethtool_set_link_ksettings);