1 /* 2 * Framework and drivers for configuring and reading different PHYs 3 * Based on code in sungem_phy.c and gianfar_phy.c 4 * 5 * Author: Andy Fleming 6 * 7 * Copyright (c) 2004 Freescale Semiconductor, Inc. 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 #ifndef __PHY_H 17 #define __PHY_H 18 19 #include <linux/spinlock.h> 20 #include <linux/ethtool.h> 21 #include <linux/mii.h> 22 #include <linux/timer.h> 23 #include <linux/workqueue.h> 24 #include <linux/mod_devicetable.h> 25 26 #include <linux/atomic.h> 27 28 #define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \ 29 SUPPORTED_TP | \ 30 SUPPORTED_MII) 31 32 #define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \ 33 SUPPORTED_10baseT_Full) 34 35 #define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \ 36 SUPPORTED_100baseT_Full) 37 38 #define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \ 39 SUPPORTED_1000baseT_Full) 40 41 #define PHY_BASIC_FEATURES (PHY_10BT_FEATURES | \ 42 PHY_100BT_FEATURES | \ 43 PHY_DEFAULT_FEATURES) 44 45 #define PHY_GBIT_FEATURES (PHY_BASIC_FEATURES | \ 46 PHY_1000BT_FEATURES) 47 48 49 /* 50 * Set phydev->irq to PHY_POLL if interrupts are not supported, 51 * or not desired for this PHY. Set to PHY_IGNORE_INTERRUPT if 52 * the attached driver handles the interrupt 53 */ 54 #define PHY_POLL -1 55 #define PHY_IGNORE_INTERRUPT -2 56 57 #define PHY_HAS_INTERRUPT 0x00000001 58 #define PHY_HAS_MAGICANEG 0x00000002 59 #define PHY_IS_INTERNAL 0x00000004 60 61 /* Interface Mode definitions */ 62 typedef enum { 63 PHY_INTERFACE_MODE_NA, 64 PHY_INTERFACE_MODE_MII, 65 PHY_INTERFACE_MODE_GMII, 66 PHY_INTERFACE_MODE_SGMII, 67 PHY_INTERFACE_MODE_TBI, 68 PHY_INTERFACE_MODE_REVMII, 69 PHY_INTERFACE_MODE_RMII, 70 PHY_INTERFACE_MODE_RGMII, 71 PHY_INTERFACE_MODE_RGMII_ID, 72 PHY_INTERFACE_MODE_RGMII_RXID, 73 PHY_INTERFACE_MODE_RGMII_TXID, 74 PHY_INTERFACE_MODE_RTBI, 75 PHY_INTERFACE_MODE_SMII, 76 PHY_INTERFACE_MODE_XGMII, 77 } phy_interface_t; 78 79 80 #define PHY_INIT_TIMEOUT 100000 81 #define PHY_STATE_TIME 1 82 #define PHY_FORCE_TIMEOUT 10 83 #define PHY_AN_TIMEOUT 10 84 85 #define PHY_MAX_ADDR 32 86 87 /* Used when trying to connect to a specific phy (mii bus id:phy device id) */ 88 #define PHY_ID_FMT "%s:%02x" 89 90 /* 91 * Need to be a little smaller than phydev->dev.bus_id to leave room 92 * for the ":%02x" 93 */ 94 #define MII_BUS_ID_SIZE (20 - 3) 95 96 /* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit 97 IEEE 802.3ae clause 45 addressing mode used by 10GIGE phy chips. */ 98 #define MII_ADDR_C45 (1<<30) 99 100 struct device; 101 struct sk_buff; 102 103 /* 104 * The Bus class for PHYs. Devices which provide access to 105 * PHYs should register using this structure 106 */ 107 struct mii_bus { 108 const char *name; 109 char id[MII_BUS_ID_SIZE]; 110 void *priv; 111 int (*read)(struct mii_bus *bus, int phy_id, int regnum); 112 int (*write)(struct mii_bus *bus, int phy_id, int regnum, u16 val); 113 int (*reset)(struct mii_bus *bus); 114 115 /* 116 * A lock to ensure that only one thing can read/write 117 * the MDIO bus at a time 118 */ 119 struct mutex mdio_lock; 120 121 struct device *parent; 122 enum { 123 MDIOBUS_ALLOCATED = 1, 124 MDIOBUS_REGISTERED, 125 MDIOBUS_UNREGISTERED, 126 MDIOBUS_RELEASED, 127 } state; 128 struct device dev; 129 130 /* list of all PHYs on bus */ 131 struct phy_device *phy_map[PHY_MAX_ADDR]; 132 133 /* PHY addresses to be ignored when probing */ 134 u32 phy_mask; 135 136 /* 137 * Pointer to an array of interrupts, each PHY's 138 * interrupt at the index matching its address 139 */ 140 int *irq; 141 }; 142 #define to_mii_bus(d) container_of(d, struct mii_bus, dev) 143 144 struct mii_bus *mdiobus_alloc_size(size_t); 145 static inline struct mii_bus *mdiobus_alloc(void) 146 { 147 return mdiobus_alloc_size(0); 148 } 149 150 int mdiobus_register(struct mii_bus *bus); 151 void mdiobus_unregister(struct mii_bus *bus); 152 void mdiobus_free(struct mii_bus *bus); 153 struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr); 154 int mdiobus_read(struct mii_bus *bus, int addr, u32 regnum); 155 int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val); 156 157 158 #define PHY_INTERRUPT_DISABLED 0x0 159 #define PHY_INTERRUPT_ENABLED 0x80000000 160 161 /* PHY state machine states: 162 * 163 * DOWN: PHY device and driver are not ready for anything. probe 164 * should be called if and only if the PHY is in this state, 165 * given that the PHY device exists. 166 * - PHY driver probe function will, depending on the PHY, set 167 * the state to STARTING or READY 168 * 169 * STARTING: PHY device is coming up, and the ethernet driver is 170 * not ready. PHY drivers may set this in the probe function. 171 * If they do, they are responsible for making sure the state is 172 * eventually set to indicate whether the PHY is UP or READY, 173 * depending on the state when the PHY is done starting up. 174 * - PHY driver will set the state to READY 175 * - start will set the state to PENDING 176 * 177 * READY: PHY is ready to send and receive packets, but the 178 * controller is not. By default, PHYs which do not implement 179 * probe will be set to this state by phy_probe(). If the PHY 180 * driver knows the PHY is ready, and the PHY state is STARTING, 181 * then it sets this STATE. 182 * - start will set the state to UP 183 * 184 * PENDING: PHY device is coming up, but the ethernet driver is 185 * ready. phy_start will set this state if the PHY state is 186 * STARTING. 187 * - PHY driver will set the state to UP when the PHY is ready 188 * 189 * UP: The PHY and attached device are ready to do work. 190 * Interrupts should be started here. 191 * - timer moves to AN 192 * 193 * AN: The PHY is currently negotiating the link state. Link is 194 * therefore down for now. phy_timer will set this state when it 195 * detects the state is UP. config_aneg will set this state 196 * whenever called with phydev->autoneg set to AUTONEG_ENABLE. 197 * - If autonegotiation finishes, but there's no link, it sets 198 * the state to NOLINK. 199 * - If aneg finishes with link, it sets the state to RUNNING, 200 * and calls adjust_link 201 * - If autonegotiation did not finish after an arbitrary amount 202 * of time, autonegotiation should be tried again if the PHY 203 * supports "magic" autonegotiation (back to AN) 204 * - If it didn't finish, and no magic_aneg, move to FORCING. 205 * 206 * NOLINK: PHY is up, but not currently plugged in. 207 * - If the timer notes that the link comes back, we move to RUNNING 208 * - config_aneg moves to AN 209 * - phy_stop moves to HALTED 210 * 211 * FORCING: PHY is being configured with forced settings 212 * - if link is up, move to RUNNING 213 * - If link is down, we drop to the next highest setting, and 214 * retry (FORCING) after a timeout 215 * - phy_stop moves to HALTED 216 * 217 * RUNNING: PHY is currently up, running, and possibly sending 218 * and/or receiving packets 219 * - timer will set CHANGELINK if we're polling (this ensures the 220 * link state is polled every other cycle of this state machine, 221 * which makes it every other second) 222 * - irq will set CHANGELINK 223 * - config_aneg will set AN 224 * - phy_stop moves to HALTED 225 * 226 * CHANGELINK: PHY experienced a change in link state 227 * - timer moves to RUNNING if link 228 * - timer moves to NOLINK if the link is down 229 * - phy_stop moves to HALTED 230 * 231 * HALTED: PHY is up, but no polling or interrupts are done. Or 232 * PHY is in an error state. 233 * 234 * - phy_start moves to RESUMING 235 * 236 * RESUMING: PHY was halted, but now wants to run again. 237 * - If we are forcing, or aneg is done, timer moves to RUNNING 238 * - If aneg is not done, timer moves to AN 239 * - phy_stop moves to HALTED 240 */ 241 enum phy_state { 242 PHY_DOWN = 0, 243 PHY_STARTING, 244 PHY_READY, 245 PHY_PENDING, 246 PHY_UP, 247 PHY_AN, 248 PHY_RUNNING, 249 PHY_NOLINK, 250 PHY_FORCING, 251 PHY_CHANGELINK, 252 PHY_HALTED, 253 PHY_RESUMING 254 }; 255 256 /** 257 * struct phy_c45_device_ids - 802.3-c45 Device Identifiers 258 * @devices_in_package: Bit vector of devices present. 259 * @device_ids: The device identifer for each present device. 260 */ 261 struct phy_c45_device_ids { 262 u32 devices_in_package; 263 u32 device_ids[8]; 264 }; 265 266 /* phy_device: An instance of a PHY 267 * 268 * drv: Pointer to the driver for this PHY instance 269 * bus: Pointer to the bus this PHY is on 270 * dev: driver model device structure for this PHY 271 * phy_id: UID for this device found during discovery 272 * c45_ids: 802.3-c45 Device Identifers if is_c45. 273 * is_c45: Set to true if this phy uses clause 45 addressing. 274 * is_internal: Set to true if this phy is internal to a MAC. 275 * state: state of the PHY for management purposes 276 * dev_flags: Device-specific flags used by the PHY driver. 277 * addr: Bus address of PHY 278 * link_timeout: The number of timer firings to wait before the 279 * giving up on the current attempt at acquiring a link 280 * irq: IRQ number of the PHY's interrupt (-1 if none) 281 * phy_timer: The timer for handling the state machine 282 * phy_queue: A work_queue for the interrupt 283 * attached_dev: The attached enet driver's device instance ptr 284 * adjust_link: Callback for the enet controller to respond to 285 * changes in the link state. 286 * 287 * speed, duplex, pause, supported, advertising, lp_advertising, 288 * and autoneg are used like in mii_if_info 289 * 290 * interrupts currently only supports enabled or disabled, 291 * but could be changed in the future to support enabling 292 * and disabling specific interrupts 293 * 294 * Contains some infrastructure for polling and interrupt 295 * handling, as well as handling shifts in PHY hardware state 296 */ 297 struct phy_device { 298 /* Information about the PHY type */ 299 /* And management functions */ 300 struct phy_driver *drv; 301 302 struct mii_bus *bus; 303 304 struct device dev; 305 306 u32 phy_id; 307 308 struct phy_c45_device_ids c45_ids; 309 bool is_c45; 310 bool is_internal; 311 312 enum phy_state state; 313 314 u32 dev_flags; 315 316 phy_interface_t interface; 317 318 /* Bus address of the PHY (0-31) */ 319 int addr; 320 321 /* 322 * forced speed & duplex (no autoneg) 323 * partner speed & duplex & pause (autoneg) 324 */ 325 int speed; 326 int duplex; 327 int pause; 328 int asym_pause; 329 330 /* The most recently read link state */ 331 int link; 332 333 /* Enabled Interrupts */ 334 u32 interrupts; 335 336 /* Union of PHY and Attached devices' supported modes */ 337 /* See mii.h for more info */ 338 u32 supported; 339 u32 advertising; 340 u32 lp_advertising; 341 342 int autoneg; 343 344 int link_timeout; 345 346 /* 347 * Interrupt number for this PHY 348 * -1 means no interrupt 349 */ 350 int irq; 351 352 /* private data pointer */ 353 /* For use by PHYs to maintain extra state */ 354 void *priv; 355 356 /* Interrupt and Polling infrastructure */ 357 struct work_struct phy_queue; 358 struct delayed_work state_queue; 359 atomic_t irq_disable; 360 361 struct mutex lock; 362 363 struct net_device *attached_dev; 364 365 void (*adjust_link)(struct net_device *dev); 366 }; 367 #define to_phy_device(d) container_of(d, struct phy_device, dev) 368 369 /* struct phy_driver: Driver structure for a particular PHY type 370 * 371 * phy_id: The result of reading the UID registers of this PHY 372 * type, and ANDing them with the phy_id_mask. This driver 373 * only works for PHYs with IDs which match this field 374 * name: The friendly name of this PHY type 375 * phy_id_mask: Defines the important bits of the phy_id 376 * features: A list of features (speed, duplex, etc) supported 377 * by this PHY 378 * flags: A bitfield defining certain other features this PHY 379 * supports (like interrupts) 380 * 381 * The drivers must implement config_aneg and read_status. All 382 * other functions are optional. Note that none of these 383 * functions should be called from interrupt time. The goal is 384 * for the bus read/write functions to be able to block when the 385 * bus transaction is happening, and be freed up by an interrupt 386 * (The MPC85xx has this ability, though it is not currently 387 * supported in the driver). 388 */ 389 struct phy_driver { 390 u32 phy_id; 391 char *name; 392 unsigned int phy_id_mask; 393 u32 features; 394 u32 flags; 395 396 /* 397 * Called to initialize the PHY, 398 * including after a reset 399 */ 400 int (*config_init)(struct phy_device *phydev); 401 402 /* 403 * Called during discovery. Used to set 404 * up device-specific structures, if any 405 */ 406 int (*probe)(struct phy_device *phydev); 407 408 /* PHY Power Management */ 409 int (*suspend)(struct phy_device *phydev); 410 int (*resume)(struct phy_device *phydev); 411 412 /* 413 * Configures the advertisement and resets 414 * autonegotiation if phydev->autoneg is on, 415 * forces the speed to the current settings in phydev 416 * if phydev->autoneg is off 417 */ 418 int (*config_aneg)(struct phy_device *phydev); 419 420 /* Determines the negotiated speed and duplex */ 421 int (*read_status)(struct phy_device *phydev); 422 423 /* Clears any pending interrupts */ 424 int (*ack_interrupt)(struct phy_device *phydev); 425 426 /* Enables or disables interrupts */ 427 int (*config_intr)(struct phy_device *phydev); 428 429 /* 430 * Checks if the PHY generated an interrupt. 431 * For multi-PHY devices with shared PHY interrupt pin 432 */ 433 int (*did_interrupt)(struct phy_device *phydev); 434 435 /* Clears up any memory if needed */ 436 void (*remove)(struct phy_device *phydev); 437 438 /* Returns true if this is a suitable driver for the given 439 * phydev. If NULL, matching is based on phy_id and 440 * phy_id_mask. 441 */ 442 int (*match_phy_device)(struct phy_device *phydev); 443 444 /* Handles ethtool queries for hardware time stamping. */ 445 int (*ts_info)(struct phy_device *phydev, struct ethtool_ts_info *ti); 446 447 /* Handles SIOCSHWTSTAMP ioctl for hardware time stamping. */ 448 int (*hwtstamp)(struct phy_device *phydev, struct ifreq *ifr); 449 450 /* 451 * Requests a Rx timestamp for 'skb'. If the skb is accepted, 452 * the phy driver promises to deliver it using netif_rx() as 453 * soon as a timestamp becomes available. One of the 454 * PTP_CLASS_ values is passed in 'type'. The function must 455 * return true if the skb is accepted for delivery. 456 */ 457 bool (*rxtstamp)(struct phy_device *dev, struct sk_buff *skb, int type); 458 459 /* 460 * Requests a Tx timestamp for 'skb'. The phy driver promises 461 * to deliver it using skb_complete_tx_timestamp() as soon as a 462 * timestamp becomes available. One of the PTP_CLASS_ values 463 * is passed in 'type'. 464 */ 465 void (*txtstamp)(struct phy_device *dev, struct sk_buff *skb, int type); 466 467 /* Some devices (e.g. qnap TS-119P II) require PHY register changes to 468 * enable Wake on LAN, so set_wol is provided to be called in the 469 * ethernet driver's set_wol function. */ 470 int (*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); 471 472 /* See set_wol, but for checking whether Wake on LAN is enabled. */ 473 void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); 474 475 struct device_driver driver; 476 }; 477 #define to_phy_driver(d) container_of(d, struct phy_driver, driver) 478 479 #define PHY_ANY_ID "MATCH ANY PHY" 480 #define PHY_ANY_UID 0xffffffff 481 482 /* A Structure for boards to register fixups with the PHY Lib */ 483 struct phy_fixup { 484 struct list_head list; 485 char bus_id[20]; 486 u32 phy_uid; 487 u32 phy_uid_mask; 488 int (*run)(struct phy_device *phydev); 489 }; 490 491 /** 492 * phy_read_mmd - Convenience function for reading a register 493 * from an MMD on a given PHY. 494 * @phydev: The phy_device struct 495 * @devad: The MMD to read from 496 * @regnum: The register on the MMD to read 497 * 498 * Same rules as for phy_read(); 499 */ 500 static inline int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum) 501 { 502 if (!phydev->is_c45) 503 return -EOPNOTSUPP; 504 505 return mdiobus_read(phydev->bus, phydev->addr, 506 MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff)); 507 } 508 509 /** 510 * phy_read - Convenience function for reading a given PHY register 511 * @phydev: the phy_device struct 512 * @regnum: register number to read 513 * 514 * NOTE: MUST NOT be called from interrupt context, 515 * because the bus read/write functions may wait for an interrupt 516 * to conclude the operation. 517 */ 518 static inline int phy_read(struct phy_device *phydev, u32 regnum) 519 { 520 return mdiobus_read(phydev->bus, phydev->addr, regnum); 521 } 522 523 /** 524 * phy_write - Convenience function for writing a given PHY register 525 * @phydev: the phy_device struct 526 * @regnum: register number to write 527 * @val: value to write to @regnum 528 * 529 * NOTE: MUST NOT be called from interrupt context, 530 * because the bus read/write functions may wait for an interrupt 531 * to conclude the operation. 532 */ 533 static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val) 534 { 535 return mdiobus_write(phydev->bus, phydev->addr, regnum, val); 536 } 537 538 /** 539 * phy_interrupt_is_valid - Convenience function for testing a given PHY irq 540 * @phydev: the phy_device struct 541 * 542 * NOTE: must be kept in sync with addition/removal of PHY_POLL and 543 * PHY_IGNORE_INTERRUPT 544 */ 545 static inline bool phy_interrupt_is_valid(struct phy_device *phydev) 546 { 547 return phydev->irq != PHY_POLL && phydev->irq != PHY_IGNORE_INTERRUPT; 548 } 549 550 /** 551 * phy_is_internal - Convenience function for testing if a PHY is internal 552 * @phydev: the phy_device struct 553 */ 554 static inline bool phy_is_internal(struct phy_device *phydev) 555 { 556 return phydev->is_internal; 557 } 558 559 /** 560 * phy_write_mmd - Convenience function for writing a register 561 * on an MMD on a given PHY. 562 * @phydev: The phy_device struct 563 * @devad: The MMD to read from 564 * @regnum: The register on the MMD to read 565 * @val: value to write to @regnum 566 * 567 * Same rules as for phy_write(); 568 */ 569 static inline int phy_write_mmd(struct phy_device *phydev, int devad, 570 u32 regnum, u16 val) 571 { 572 if (!phydev->is_c45) 573 return -EOPNOTSUPP; 574 575 regnum = MII_ADDR_C45 | ((devad & 0x1f) << 16) | (regnum & 0xffff); 576 577 return mdiobus_write(phydev->bus, phydev->addr, regnum, val); 578 } 579 580 struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id, 581 bool is_c45, 582 struct phy_c45_device_ids *c45_ids); 583 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45); 584 int phy_device_register(struct phy_device *phy); 585 int phy_init_hw(struct phy_device *phydev); 586 int phy_suspend(struct phy_device *phydev); 587 int phy_resume(struct phy_device *phydev); 588 struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, 589 phy_interface_t interface); 590 struct phy_device *phy_find_first(struct mii_bus *bus); 591 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, 592 u32 flags, phy_interface_t interface); 593 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, 594 void (*handler)(struct net_device *), 595 phy_interface_t interface); 596 struct phy_device *phy_connect(struct net_device *dev, const char *bus_id, 597 void (*handler)(struct net_device *), 598 phy_interface_t interface); 599 void phy_disconnect(struct phy_device *phydev); 600 void phy_detach(struct phy_device *phydev); 601 void phy_start(struct phy_device *phydev); 602 void phy_stop(struct phy_device *phydev); 603 int phy_start_aneg(struct phy_device *phydev); 604 605 int phy_stop_interrupts(struct phy_device *phydev); 606 607 static inline int phy_read_status(struct phy_device *phydev) 608 { 609 return phydev->drv->read_status(phydev); 610 } 611 612 int genphy_setup_forced(struct phy_device *phydev); 613 int genphy_restart_aneg(struct phy_device *phydev); 614 int genphy_config_aneg(struct phy_device *phydev); 615 int genphy_update_link(struct phy_device *phydev); 616 int genphy_read_status(struct phy_device *phydev); 617 int genphy_suspend(struct phy_device *phydev); 618 int genphy_resume(struct phy_device *phydev); 619 void phy_driver_unregister(struct phy_driver *drv); 620 void phy_drivers_unregister(struct phy_driver *drv, int n); 621 int phy_driver_register(struct phy_driver *new_driver); 622 int phy_drivers_register(struct phy_driver *new_driver, int n); 623 void phy_state_machine(struct work_struct *work); 624 void phy_change(struct work_struct *work); 625 void phy_mac_interrupt(struct phy_device *phydev, int new_link); 626 void phy_start_machine(struct phy_device *phydev); 627 void phy_stop_machine(struct phy_device *phydev); 628 int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd); 629 int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd); 630 int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd); 631 int phy_start_interrupts(struct phy_device *phydev); 632 void phy_print_status(struct phy_device *phydev); 633 void phy_device_free(struct phy_device *phydev); 634 635 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask, 636 int (*run)(struct phy_device *)); 637 int phy_register_fixup_for_id(const char *bus_id, 638 int (*run)(struct phy_device *)); 639 int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask, 640 int (*run)(struct phy_device *)); 641 642 int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable); 643 int phy_get_eee_err(struct phy_device *phydev); 644 int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data); 645 int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data); 646 int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol); 647 void phy_ethtool_get_wol(struct phy_device *phydev, 648 struct ethtool_wolinfo *wol); 649 650 int __init mdio_bus_init(void); 651 void mdio_bus_exit(void); 652 653 extern struct bus_type mdio_bus_type; 654 #endif /* __PHY_H */ 655