include/linux/phy.h

   1 /*
   2  * include/linux/phy.h
   3  *
   4  * Framework and drivers for configuring and reading different PHYs
   5  * Based on code in sungem_phy.c and gianfar_phy.c
   6  *
   7  * Author: Andy Fleming
   8  *
   9  * Copyright (c) 2004 Freescale Semiconductor, Inc.
  10  *
  11  * This program is free software; you can redistribute  it and/or modify it
  12  * under  the terms of  the GNU General  Public License as published by the
  13  * Free Software Foundation;  either version 2 of the  License, or (at your
  14  * option) any later version.
  15  *
  16  */
  17
  18 #ifndef __PHY_H
  19 #define __PHY_H
  20
  21 #include <linux/spinlock.h>
  22 #include <linux/ethtool.h>
  23 #include <linux/mii.h>
  24 #include <linux/timer.h>
  25 #include <linux/workqueue.h>
  26 #include <linux/mod_devicetable.h>
  27
  28 #include <linux/atomic.h>
  29
  30 #define PHY_DEFAULT_FEATURES    (SUPPORTED_Autoneg | \
  31                                  SUPPORTED_TP | \
  32                                  SUPPORTED_MII)
  33
  34 #define PHY_10BT_FEATURES       (SUPPORTED_10baseT_Half | \
  35                                  SUPPORTED_10baseT_Full)
  36
  37 #define PHY_100BT_FEATURES      (SUPPORTED_100baseT_Half | \
  38                                  SUPPORTED_100baseT_Full)
  39
  40 #define PHY_1000BT_FEATURES     (SUPPORTED_1000baseT_Half | \
  41                                  SUPPORTED_1000baseT_Full)
  42
  43 #define PHY_BASIC_FEATURES      (PHY_10BT_FEATURES | \
  44                                  PHY_100BT_FEATURES | \
  45                                  PHY_DEFAULT_FEATURES)
  46
  47 #define PHY_GBIT_FEATURES       (PHY_BASIC_FEATURES | \
  48                                  PHY_1000BT_FEATURES)
  49
  50
  51 /*
  52  * Set phydev->irq to PHY_POLL if interrupts are not supported,
  53  * or not desired for this PHY.  Set to PHY_IGNORE_INTERRUPT if
  54  * the attached driver handles the interrupt
  55  */
  56 #define PHY_POLL                -1
  57 #define PHY_IGNORE_INTERRUPT    -2
  58
  59 #define PHY_HAS_INTERRUPT       0x00000001
  60 #define PHY_HAS_MAGICANEG       0x00000002
  61 #define PHY_IS_INTERNAL         0x00000004
  62
  63 /* Interface Mode definitions */
  64 typedef enum {
  65         PHY_INTERFACE_MODE_NA,
  66         PHY_INTERFACE_MODE_MII,
  67         PHY_INTERFACE_MODE_GMII,
  68         PHY_INTERFACE_MODE_SGMII,
  69         PHY_INTERFACE_MODE_TBI,
  70         PHY_INTERFACE_MODE_REVMII,
  71         PHY_INTERFACE_MODE_RMII,
  72         PHY_INTERFACE_MODE_RGMII,
  73         PHY_INTERFACE_MODE_RGMII_ID,
  74         PHY_INTERFACE_MODE_RGMII_RXID,
  75         PHY_INTERFACE_MODE_RGMII_TXID,
  76         PHY_INTERFACE_MODE_RTBI,
  77         PHY_INTERFACE_MODE_SMII,
  78 } phy_interface_t;
  79
  80
  81 #define PHY_INIT_TIMEOUT        100000
  82 #define PHY_STATE_TIME          1
  83 #define PHY_FORCE_TIMEOUT       10
  84 #define PHY_AN_TIMEOUT          10
  85
  86 #define PHY_MAX_ADDR    32
  87
  88 /* Used when trying to connect to a specific phy (mii bus id:phy device id) */
  89 #define PHY_ID_FMT "%s:%02x"
  90
  91 /*
  92  * Need to be a little smaller than phydev->dev.bus_id to leave room
  93  * for the ":%02x"
  94  */
  95 #define MII_BUS_ID_SIZE (20 - 3)
  96
  97 /* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit
  98    IEEE 802.3ae clause 45 addressing mode used by 10GIGE phy chips. */
  99 #define MII_ADDR_C45 (1<<30)
 100
 101 struct device;
 102 struct sk_buff;
 103
 104 /*
 105  * The Bus class for PHYs.  Devices which provide access to
 106  * PHYs should register using this structure
 107  */
 108 struct mii_bus {
 109         const char *name;
 110         char id[MII_BUS_ID_SIZE];
 111         void *priv;
 112         int (*read)(struct mii_bus *bus, int phy_id, int regnum);
 113         int (*write)(struct mii_bus *bus, int phy_id, int regnum, u16 val);
 114         int (*reset)(struct mii_bus *bus);
 115
 116         /*
 117          * A lock to ensure that only one thing can read/write
 118          * the MDIO bus at a time
 119          */
 120         struct mutex mdio_lock;
 121
 122         struct device *parent;
 123         enum {
 124                 MDIOBUS_ALLOCATED = 1,
 125                 MDIOBUS_REGISTERED,
 126                 MDIOBUS_UNREGISTERED,
 127                 MDIOBUS_RELEASED,
 128         } state;
 129         struct device dev;
 130
 131         /* list of all PHYs on bus */
 132         struct phy_device *phy_map[PHY_MAX_ADDR];
 133
 134         /* PHY addresses to be ignored when probing */
 135         u32 phy_mask;
 136
 137         /*
 138          * Pointer to an array of interrupts, each PHY's
 139          * interrupt at the index matching its address
 140          */
 141         int *irq;
 142 };
 143 #define to_mii_bus(d) container_of(d, struct mii_bus, dev)
 144
 145 struct mii_bus *mdiobus_alloc_size(size_t);
 146 static inline struct mii_bus *mdiobus_alloc(void)
 147 {
 148         return mdiobus_alloc_size(0);
 149 }
 150
 151 int mdiobus_register(struct mii_bus *bus);
 152 void mdiobus_unregister(struct mii_bus *bus);
 153 void mdiobus_free(struct mii_bus *bus);
 154 struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
 155 int mdiobus_read(struct mii_bus *bus, int addr, u32 regnum);
 156 int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val);
 157
 158
 159 #define PHY_INTERRUPT_DISABLED  0x0
 160 #define PHY_INTERRUPT_ENABLED   0x80000000
 161
 162 /* PHY state machine states:
 163  *
 164  * DOWN: PHY device and driver are not ready for anything.  probe
 165  * should be called if and only if the PHY is in this state,
 166  * given that the PHY device exists.
 167  * - PHY driver probe function will, depending on the PHY, set
 168  * the state to STARTING or READY
 169  *
 170  * STARTING:  PHY device is coming up, and the ethernet driver is
 171  * not ready.  PHY drivers may set this in the probe function.
 172  * If they do, they are responsible for making sure the state is
 173  * eventually set to indicate whether the PHY is UP or READY,
 174  * depending on the state when the PHY is done starting up.
 175  * - PHY driver will set the state to READY
 176  * - start will set the state to PENDING
 177  *
 178  * READY: PHY is ready to send and receive packets, but the
 179  * controller is not.  By default, PHYs which do not implement
 180  * probe will be set to this state by phy_probe().  If the PHY
 181  * driver knows the PHY is ready, and the PHY state is STARTING,
 182  * then it sets this STATE.
 183  * - start will set the state to UP
 184  *
 185  * PENDING: PHY device is coming up, but the ethernet driver is
 186  * ready.  phy_start will set this state if the PHY state is
 187  * STARTING.
 188  * - PHY driver will set the state to UP when the PHY is ready
 189  *
 190  * UP: The PHY and attached device are ready to do work.
 191  * Interrupts should be started here.
 192  * - timer moves to AN
 193  *
 194  * AN: The PHY is currently negotiating the link state.  Link is
 195  * therefore down for now.  phy_timer will set this state when it
 196  * detects the state is UP.  config_aneg will set this state
 197  * whenever called with phydev->autoneg set to AUTONEG_ENABLE.
 198  * - If autonegotiation finishes, but there's no link, it sets
 199  *   the state to NOLINK.
 200  * - If aneg finishes with link, it sets the state to RUNNING,
 201  *   and calls adjust_link
 202  * - If autonegotiation did not finish after an arbitrary amount
 203  *   of time, autonegotiation should be tried again if the PHY
 204  *   supports "magic" autonegotiation (back to AN)
 205  * - If it didn't finish, and no magic_aneg, move to FORCING.
 206  *
 207  * NOLINK: PHY is up, but not currently plugged in.
 208  * - If the timer notes that the link comes back, we move to RUNNING
 209  * - config_aneg moves to AN
 210  * - phy_stop moves to HALTED
 211  *
 212  * FORCING: PHY is being configured with forced settings
 213  * - if link is up, move to RUNNING
 214  * - If link is down, we drop to the next highest setting, and
 215  *   retry (FORCING) after a timeout
 216  * - phy_stop moves to HALTED
 217  *
 218  * RUNNING: PHY is currently up, running, and possibly sending
 219  * and/or receiving packets
 220  * - timer will set CHANGELINK if we're polling (this ensures the
 221  *   link state is polled every other cycle of this state machine,
 222  *   which makes it every other second)
 223  * - irq will set CHANGELINK
 224  * - config_aneg will set AN
 225  * - phy_stop moves to HALTED
 226  *
 227  * CHANGELINK: PHY experienced a change in link state
 228  * - timer moves to RUNNING if link
 229  * - timer moves to NOLINK if the link is down
 230  * - phy_stop moves to HALTED
 231  *
 232  * HALTED: PHY is up, but no polling or interrupts are done. Or
 233  * PHY is in an error state.
 234  *
 235  * - phy_start moves to RESUMING
 236  *
 237  * RESUMING: PHY was halted, but now wants to run again.
 238  * - If we are forcing, or aneg is done, timer moves to RUNNING
 239  * - If aneg is not done, timer moves to AN
 240  * - phy_stop moves to HALTED
 241  */
 242 enum phy_state {
 243         PHY_DOWN=0,
 244         PHY_STARTING,
 245         PHY_READY,
 246         PHY_PENDING,
 247         PHY_UP,
 248         PHY_AN,
 249         PHY_RUNNING,
 250         PHY_NOLINK,
 251         PHY_FORCING,
 252         PHY_CHANGELINK,
 253         PHY_HALTED,
 254         PHY_RESUMING
 255 };
 256
 257 /**
 258  * struct phy_c45_device_ids - 802.3-c45 Device Identifiers
 259  * @devices_in_package: Bit vector of devices present.
 260  * @device_ids: The device identifer for each present device.
 261  */
 262 struct phy_c45_device_ids {
 263         u32 devices_in_package;
 264         u32 device_ids[8];
 265 };
 266
 267 /* phy_device: An instance of a PHY
 268  *
 269  * drv: Pointer to the driver for this PHY instance
 270  * bus: Pointer to the bus this PHY is on
 271  * dev: driver model device structure for this PHY
 272  * phy_id: UID for this device found during discovery
 273  * c45_ids: 802.3-c45 Device Identifers if is_c45.
 274  * is_c45:  Set to true if this phy uses clause 45 addressing.
 275  * is_internal: Set to true if this phy is internal to a MAC.
 276  * state: state of the PHY for management purposes
 277  * dev_flags: Device-specific flags used by the PHY driver.
 278  * addr: Bus address of PHY
 279  * link_timeout: The number of timer firings to wait before the
 280  * giving up on the current attempt at acquiring a link
 281  * irq: IRQ number of the PHY's interrupt (-1 if none)
 282  * phy_timer: The timer for handling the state machine
 283  * phy_queue: A work_queue for the interrupt
 284  * attached_dev: The attached enet driver's device instance ptr
 285  * adjust_link: Callback for the enet controller to respond to
 286  * changes in the link state.
 287  * adjust_state: Callback for the enet driver to respond to
 288  * changes in the state machine.
 289  *
 290  * speed, duplex, pause, supported, advertising, and
 291  * autoneg are used like in mii_if_info
 292  *
 293  * interrupts currently only supports enabled or disabled,
 294  * but could be changed in the future to support enabling
 295  * and disabling specific interrupts
 296  *
 297  * Contains some infrastructure for polling and interrupt
 298  * handling, as well as handling shifts in PHY hardware state
 299  */
 300 struct phy_device {
 301         /* Information about the PHY type */
 302         /* And management functions */
 303         struct phy_driver *drv;
 304
 305         struct mii_bus *bus;
 306
 307         struct device dev;
 308
 309         u32 phy_id;
 310
 311         struct phy_c45_device_ids c45_ids;
 312         bool is_c45;
 313         bool is_internal;
 314
 315         enum phy_state state;
 316
 317         u32 dev_flags;
 318
 319         phy_interface_t interface;
 320
 321         /* Bus address of the PHY (0-31) */
 322         int addr;
 323
 324         /*
 325          * forced speed & duplex (no autoneg)
 326          * partner speed & duplex & pause (autoneg)
 327          */
 328         int speed;
 329         int duplex;
 330         int pause;
 331         int asym_pause;
 332
 333         /* The most recently read link state */
 334         int link;
 335
 336         /* Enabled Interrupts */
 337         u32 interrupts;
 338
 339         /* Union of PHY and Attached devices' supported modes */
 340         /* See mii.h for more info */
 341         u32 supported;
 342         u32 advertising;
 343
 344         int autoneg;
 345
 346         int link_timeout;
 347
 348         /*
 349          * Interrupt number for this PHY
 350          * -1 means no interrupt
 351          */
 352         int irq;
 353
 354         /* private data pointer */
 355         /* For use by PHYs to maintain extra state */
 356         void *priv;
 357
 358         /* Interrupt and Polling infrastructure */
 359         struct work_struct phy_queue;
 360         struct delayed_work state_queue;
 361         atomic_t irq_disable;
 362
 363         struct mutex lock;
 364
 365         struct net_device *attached_dev;
 366
 367         void (*adjust_link)(struct net_device *dev);
 368
 369         void (*adjust_state)(struct net_device *dev);
 370 };
 371 #define to_phy_device(d) container_of(d, struct phy_device, dev)
 372
 373 /* struct phy_driver: Driver structure for a particular PHY type
 374  *
 375  * phy_id: The result of reading the UID registers of this PHY
 376  *   type, and ANDing them with the phy_id_mask.  This driver
 377  *   only works for PHYs with IDs which match this field
 378  * name: The friendly name of this PHY type
 379  * phy_id_mask: Defines the important bits of the phy_id
 380  * features: A list of features (speed, duplex, etc) supported
 381  *   by this PHY
 382  * flags: A bitfield defining certain other features this PHY
 383  *   supports (like interrupts)
 384  *
 385  * The drivers must implement config_aneg and read_status.  All
 386  * other functions are optional. Note that none of these
 387  * functions should be called from interrupt time.  The goal is
 388  * for the bus read/write functions to be able to block when the
 389  * bus transaction is happening, and be freed up by an interrupt
 390  * (The MPC85xx has this ability, though it is not currently
 391  * supported in the driver).
 392  */
 393 struct phy_driver {
 394         u32 phy_id;
 395         char *name;
 396         unsigned int phy_id_mask;
 397         u32 features;
 398         u32 flags;
 399
 400         /*
 401          * Called to initialize the PHY,
 402          * including after a reset
 403          */
 404         int (*config_init)(struct phy_device *phydev);
 405
 406         /*
 407          * Called during discovery.  Used to set
 408          * up device-specific structures, if any
 409          */
 410         int (*probe)(struct phy_device *phydev);
 411
 412         /* PHY Power Management */
 413         int (*suspend)(struct phy_device *phydev);
 414         int (*resume)(struct phy_device *phydev);
 415
 416         /*
 417          * Configures the advertisement and resets
 418          * autonegotiation if phydev->autoneg is on,
 419          * forces the speed to the current settings in phydev
 420          * if phydev->autoneg is off
 421          */
 422         int (*config_aneg)(struct phy_device *phydev);
 423
 424         /* Determines the negotiated speed and duplex */
 425         int (*read_status)(struct phy_device *phydev);
 426
 427         /* Clears any pending interrupts */
 428         int (*ack_interrupt)(struct phy_device *phydev);
 429
 430         /* Enables or disables interrupts */
 431         int (*config_intr)(struct phy_device *phydev);
 432
 433         /*
 434          * Checks if the PHY generated an interrupt.
 435          * For multi-PHY devices with shared PHY interrupt pin
 436          */
 437         int (*did_interrupt)(struct phy_device *phydev);
 438
 439         /* Clears up any memory if needed */
 440         void (*remove)(struct phy_device *phydev);
 441
 442         /* Returns true if this is a suitable driver for the given
 443          * phydev.  If NULL, matching is based on phy_id and
 444          * phy_id_mask.
 445          */
 446         int (*match_phy_device)(struct phy_device *phydev);
 447
 448         /* Handles ethtool queries for hardware time stamping. */
 449         int (*ts_info)(struct phy_device *phydev, struct ethtool_ts_info *ti);
 450
 451         /* Handles SIOCSHWTSTAMP ioctl for hardware time stamping. */
 452         int  (*hwtstamp)(struct phy_device *phydev, struct ifreq *ifr);
 453
 454         /*
 455          * Requests a Rx timestamp for 'skb'. If the skb is accepted,
 456          * the phy driver promises to deliver it using netif_rx() as
 457          * soon as a timestamp becomes available. One of the
 458          * PTP_CLASS_ values is passed in 'type'. The function must
 459          * return true if the skb is accepted for delivery.
 460          */
 461         bool (*rxtstamp)(struct phy_device *dev, struct sk_buff *skb, int type);
 462
 463         /*
 464          * Requests a Tx timestamp for 'skb'. The phy driver promises
 465          * to deliver it using skb_complete_tx_timestamp() as soon as a
 466          * timestamp becomes available. One of the PTP_CLASS_ values
 467          * is passed in 'type'.
 468          */
 469         void (*txtstamp)(struct phy_device *dev, struct sk_buff *skb, int type);
 470
 471         /* Some devices (e.g. qnap TS-119P II) require PHY register changes to
 472          * enable Wake on LAN, so set_wol is provided to be called in the
 473          * ethernet driver's set_wol function. */
 474         int (*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
 475
 476         /* See set_wol, but for checking whether Wake on LAN is enabled. */
 477         void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
 478
 479         struct device_driver driver;
 480 };
 481 #define to_phy_driver(d) container_of(d, struct phy_driver, driver)
 482
 483 #define PHY_ANY_ID "MATCH ANY PHY"
 484 #define PHY_ANY_UID 0xffffffff
 485
 486 /* A Structure for boards to register fixups with the PHY Lib */
 487 struct phy_fixup {
 488         struct list_head list;
 489         char bus_id[20];
 490         u32 phy_uid;
 491         u32 phy_uid_mask;
 492         int (*run)(struct phy_device *phydev);
 493 };
 494
 495 /**
 496  * phy_read - Convenience function for reading a given PHY register
 497  * @phydev: the phy_device struct
 498  * @regnum: register number to read
 499  *
 500  * NOTE: MUST NOT be called from interrupt context,
 501  * because the bus read/write functions may wait for an interrupt
 502  * to conclude the operation.
 503  */
 504 static inline int phy_read(struct phy_device *phydev, u32 regnum)
 505 {
 506         return mdiobus_read(phydev->bus, phydev->addr, regnum);
 507 }
 508
 509 /**
 510  * phy_write - Convenience function for writing a given PHY register
 511  * @phydev: the phy_device struct
 512  * @regnum: register number to write
 513  * @val: value to write to @regnum
 514  *
 515  * NOTE: MUST NOT be called from interrupt context,
 516  * because the bus read/write functions may wait for an interrupt
 517  * to conclude the operation.
 518  */
 519 static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val)
 520 {
 521         return mdiobus_write(phydev->bus, phydev->addr, regnum, val);
 522 }
 523
 524 /**
 525  * phy_interrupt_is_valid - Convenience function for testing a given PHY irq
 526  * @phydev: the phy_device struct
 527  *
 528  * NOTE: must be kept in sync with addition/removal of PHY_POLL and
 529  * PHY_IGNORE_INTERRUPT
 530  */
 531 static inline bool phy_interrupt_is_valid(struct phy_device *phydev)
 532 {
 533         return phydev->irq != PHY_POLL && phydev->irq != PHY_IGNORE_INTERRUPT;
 534 }
 535
 536 /**
 537  * phy_is_internal - Convenience function for testing if a PHY is internal
 538  * @phydev: the phy_device struct
 539  */
 540 static inline bool phy_is_internal(struct phy_device *phydev)
 541 {
 542         return phydev->is_internal;
 543 }
 544
 545 struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
 546                 bool is_c45, struct phy_c45_device_ids *c45_ids);
 547 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45);
 548 int phy_device_register(struct phy_device *phy);
 549 int phy_init_hw(struct phy_device *phydev);
 550 struct phy_device * phy_attach(struct net_device *dev,
 551                 const char *bus_id, phy_interface_t interface);
 552 struct phy_device *phy_find_first(struct mii_bus *bus);
 553 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
 554                 void (*handler)(struct net_device *),
 555                 phy_interface_t interface);
 556 struct phy_device * phy_connect(struct net_device *dev, const char *bus_id,
 557                 void (*handler)(struct net_device *),
 558                 phy_interface_t interface);
 559 void phy_disconnect(struct phy_device *phydev);
 560 void phy_detach(struct phy_device *phydev);
 561 void phy_start(struct phy_device *phydev);
 562 void phy_stop(struct phy_device *phydev);
 563 int phy_start_aneg(struct phy_device *phydev);
 564
 565 int phy_stop_interrupts(struct phy_device *phydev);
 566
 567 static inline int phy_read_status(struct phy_device *phydev) {
 568         return phydev->drv->read_status(phydev);
 569 }
 570
 571 int genphy_setup_forced(struct phy_device *phydev);
 572 int genphy_restart_aneg(struct phy_device *phydev);
 573 int genphy_config_aneg(struct phy_device *phydev);
 574 int genphy_update_link(struct phy_device *phydev);
 575 int genphy_read_status(struct phy_device *phydev);
 576 int genphy_suspend(struct phy_device *phydev);
 577 int genphy_resume(struct phy_device *phydev);
 578 void phy_driver_unregister(struct phy_driver *drv);
 579 void phy_drivers_unregister(struct phy_driver *drv, int n);
 580 int phy_driver_register(struct phy_driver *new_driver);
 581 int phy_drivers_register(struct phy_driver *new_driver, int n);
 582 void phy_state_machine(struct work_struct *work);
 583 void phy_change(struct work_struct *work);
 584 void phy_mac_interrupt(struct phy_device *phydev, int new_link);
 585 void phy_start_machine(struct phy_device *phydev,
 586                 void (*handler)(struct net_device *));
 587 void phy_stop_machine(struct phy_device *phydev);
 588 int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
 589 int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd);
 590 int phy_mii_ioctl(struct phy_device *phydev,
 591                 struct ifreq *ifr, int cmd);
 592 int phy_start_interrupts(struct phy_device *phydev);
 593 void phy_print_status(struct phy_device *phydev);
 594 void phy_device_free(struct phy_device *phydev);
 595
 596 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
 597                 int (*run)(struct phy_device *));
 598 int phy_register_fixup_for_id(const char *bus_id,
 599                 int (*run)(struct phy_device *));
 600 int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
 601                 int (*run)(struct phy_device *));
 602 int phy_scan_fixups(struct phy_device *phydev);
 603
 604 int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable);
 605 int phy_get_eee_err(struct phy_device *phydev);
 606 int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data);
 607 int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data);
 608 int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);
 609 void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);
 610
 611 int __init mdio_bus_init(void);
 612 void mdio_bus_exit(void);
 613
 614 extern struct bus_type mdio_bus_type;
 615 #endif /* __PHY_H */