include/linux/phy.h

   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/compiler.h>
  20 #include <linux/spinlock.h>
  21 #include <linux/ethtool.h>
  22 #include <linux/mdio.h>
  23 #include <linux/mii.h>
  24 #include <linux/module.h>
  25 #include <linux/timer.h>
  26 #include <linux/workqueue.h>
  27 #include <linux/mod_devicetable.h>
  28 #include <linux/phy_led_triggers.h>
  29
  30 #include <linux/atomic.h>
  31
  32 #define PHY_DEFAULT_FEATURES    (SUPPORTED_Autoneg | \
  33                                  SUPPORTED_TP | \
  34                                  SUPPORTED_MII)
  35
  36 #define PHY_10BT_FEATURES       (SUPPORTED_10baseT_Half | \
  37                                  SUPPORTED_10baseT_Full)
  38
  39 #define PHY_100BT_FEATURES      (SUPPORTED_100baseT_Half | \
  40                                  SUPPORTED_100baseT_Full)
  41
  42 #define PHY_1000BT_FEATURES     (SUPPORTED_1000baseT_Half | \
  43                                  SUPPORTED_1000baseT_Full)
  44
  45 #define PHY_BASIC_FEATURES      (PHY_10BT_FEATURES | \
  46                                  PHY_100BT_FEATURES | \
  47                                  PHY_DEFAULT_FEATURES)
  48
  49 #define PHY_GBIT_FEATURES       (PHY_BASIC_FEATURES | \
  50                                  PHY_1000BT_FEATURES)
  51
  52
  53 /*
  54  * Set phydev->irq to PHY_POLL if interrupts are not supported,
  55  * or not desired for this PHY.  Set to PHY_IGNORE_INTERRUPT if
  56  * the attached driver handles the interrupt
  57  */
  58 #define PHY_POLL                -1
  59 #define PHY_IGNORE_INTERRUPT    -2
  60
  61 #define PHY_HAS_INTERRUPT       0x00000001
  62 #define PHY_HAS_MAGICANEG       0x00000002
  63 #define PHY_IS_INTERNAL         0x00000004
  64 #define MDIO_DEVICE_IS_PHY      0x80000000
  65
  66 /* Interface Mode definitions */
  67 typedef enum {
  68         PHY_INTERFACE_MODE_NA,
  69         PHY_INTERFACE_MODE_MII,
  70         PHY_INTERFACE_MODE_GMII,
  71         PHY_INTERFACE_MODE_SGMII,
  72         PHY_INTERFACE_MODE_TBI,
  73         PHY_INTERFACE_MODE_REVMII,
  74         PHY_INTERFACE_MODE_RMII,
  75         PHY_INTERFACE_MODE_RGMII,
  76         PHY_INTERFACE_MODE_RGMII_ID,
  77         PHY_INTERFACE_MODE_RGMII_RXID,
  78         PHY_INTERFACE_MODE_RGMII_TXID,
  79         PHY_INTERFACE_MODE_RTBI,
  80         PHY_INTERFACE_MODE_SMII,
  81         PHY_INTERFACE_MODE_XGMII,
  82         PHY_INTERFACE_MODE_MOCA,
  83         PHY_INTERFACE_MODE_QSGMII,
  84         PHY_INTERFACE_MODE_TRGMII,
  85         PHY_INTERFACE_MODE_MAX,
  86 } phy_interface_t;
  87
  88 /**
  89  * phy_supported_speeds - return all speeds currently supported by a phy device
  90  * @phy: The phy device to return supported speeds of.
  91  * @speeds: buffer to store supported speeds in.
  92  * @size: size of speeds buffer.
  93  *
  94  * Description: Returns the number of supported speeds, and
  95  * fills the speeds * buffer with the supported speeds. If speeds buffer is
  96  * too small to contain * all currently supported speeds, will return as
  97  * many speeds as can fit.
  98  */
  99 unsigned int phy_supported_speeds(struct phy_device *phy,
 100                                       unsigned int *speeds,
 101                                       unsigned int size);
 102
 103 /**
 104  * It maps 'enum phy_interface_t' found in include/linux/phy.h
 105  * into the device tree binding of 'phy-mode', so that Ethernet
 106  * device driver can get phy interface from device tree.
 107  */
 108 static inline const char *phy_modes(phy_interface_t interface)
 109 {
 110         switch (interface) {
 111         case PHY_INTERFACE_MODE_NA:
 112                 return "";
 113         case PHY_INTERFACE_MODE_MII:
 114                 return "mii";
 115         case PHY_INTERFACE_MODE_GMII:
 116                 return "gmii";
 117         case PHY_INTERFACE_MODE_SGMII:
 118                 return "sgmii";
 119         case PHY_INTERFACE_MODE_TBI:
 120                 return "tbi";
 121         case PHY_INTERFACE_MODE_REVMII:
 122                 return "rev-mii";
 123         case PHY_INTERFACE_MODE_RMII:
 124                 return "rmii";
 125         case PHY_INTERFACE_MODE_RGMII:
 126                 return "rgmii";
 127         case PHY_INTERFACE_MODE_RGMII_ID:
 128                 return "rgmii-id";
 129         case PHY_INTERFACE_MODE_RGMII_RXID:
 130                 return "rgmii-rxid";
 131         case PHY_INTERFACE_MODE_RGMII_TXID:
 132                 return "rgmii-txid";
 133         case PHY_INTERFACE_MODE_RTBI:
 134                 return "rtbi";
 135         case PHY_INTERFACE_MODE_SMII:
 136                 return "smii";
 137         case PHY_INTERFACE_MODE_XGMII:
 138                 return "xgmii";
 139         case PHY_INTERFACE_MODE_MOCA:
 140                 return "moca";
 141         case PHY_INTERFACE_MODE_QSGMII:
 142                 return "qsgmii";
 143         case PHY_INTERFACE_MODE_TRGMII:
 144                 return "trgmii";
 145         default:
 146                 return "unknown";
 147         }
 148 }
 149
 150
 151 #define PHY_INIT_TIMEOUT        100000
 152 #define PHY_STATE_TIME          1
 153 #define PHY_FORCE_TIMEOUT       10
 154 #define PHY_AN_TIMEOUT          10
 155
 156 #define PHY_MAX_ADDR    32
 157
 158 /* Used when trying to connect to a specific phy (mii bus id:phy device id) */
 159 #define PHY_ID_FMT "%s:%02x"
 160
 161 /*
 162  * Need to be a little smaller than phydev->dev.bus_id to leave room
 163  * for the ":%02x"
 164  */
 165 #define MII_BUS_ID_SIZE (20 - 3)
 166
 167 /* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit
 168    IEEE 802.3ae clause 45 addressing mode used by 10GIGE phy chips. */
 169 #define MII_ADDR_C45 (1<<30)
 170
 171 struct device;
 172 struct sk_buff;
 173
 174 /*
 175  * The Bus class for PHYs.  Devices which provide access to
 176  * PHYs should register using this structure
 177  */
 178 struct mii_bus {
 179         struct module *owner;
 180         const char *name;
 181         char id[MII_BUS_ID_SIZE];
 182         void *priv;
 183         int (*read)(struct mii_bus *bus, int addr, int regnum);
 184         int (*write)(struct mii_bus *bus, int addr, int regnum, u16 val);
 185         int (*reset)(struct mii_bus *bus);
 186
 187         /*
 188          * A lock to ensure that only one thing can read/write
 189          * the MDIO bus at a time
 190          */
 191         struct mutex mdio_lock;
 192
 193         struct device *parent;
 194         enum {
 195                 MDIOBUS_ALLOCATED = 1,
 196                 MDIOBUS_REGISTERED,
 197                 MDIOBUS_UNREGISTERED,
 198                 MDIOBUS_RELEASED,
 199         } state;
 200         struct device dev;
 201
 202         /* list of all PHYs on bus */
 203         struct mdio_device *mdio_map[PHY_MAX_ADDR];
 204
 205         /* PHY addresses to be ignored when probing */
 206         u32 phy_mask;
 207
 208         /* PHY addresses to ignore the TA/read failure */
 209         u32 phy_ignore_ta_mask;
 210
 211         /*
 212          * An array of interrupts, each PHY's interrupt at the index
 213          * matching its address
 214          */
 215         int irq[PHY_MAX_ADDR];
 216 };
 217 #define to_mii_bus(d) container_of(d, struct mii_bus, dev)
 218
 219 struct mii_bus *mdiobus_alloc_size(size_t);
 220 static inline struct mii_bus *mdiobus_alloc(void)
 221 {
 222         return mdiobus_alloc_size(0);
 223 }
 224
 225 int __mdiobus_register(struct mii_bus *bus, struct module *owner);
 226 #define mdiobus_register(bus) __mdiobus_register(bus, THIS_MODULE)
 227 void mdiobus_unregister(struct mii_bus *bus);
 228 void mdiobus_free(struct mii_bus *bus);
 229 struct mii_bus *devm_mdiobus_alloc_size(struct device *dev, int sizeof_priv);
 230 static inline struct mii_bus *devm_mdiobus_alloc(struct device *dev)
 231 {
 232         return devm_mdiobus_alloc_size(dev, 0);
 233 }
 234
 235 void devm_mdiobus_free(struct device *dev, struct mii_bus *bus);
 236 struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
 237
 238 #define PHY_INTERRUPT_DISABLED  0x0
 239 #define PHY_INTERRUPT_ENABLED   0x80000000
 240
 241 /* PHY state machine states:
 242  *
 243  * DOWN: PHY device and driver are not ready for anything.  probe
 244  * should be called if and only if the PHY is in this state,
 245  * given that the PHY device exists.
 246  * - PHY driver probe function will, depending on the PHY, set
 247  * the state to STARTING or READY
 248  *
 249  * STARTING:  PHY device is coming up, and the ethernet driver is
 250  * not ready.  PHY drivers may set this in the probe function.
 251  * If they do, they are responsible for making sure the state is
 252  * eventually set to indicate whether the PHY is UP or READY,
 253  * depending on the state when the PHY is done starting up.
 254  * - PHY driver will set the state to READY
 255  * - start will set the state to PENDING
 256  *
 257  * READY: PHY is ready to send and receive packets, but the
 258  * controller is not.  By default, PHYs which do not implement
 259  * probe will be set to this state by phy_probe().  If the PHY
 260  * driver knows the PHY is ready, and the PHY state is STARTING,
 261  * then it sets this STATE.
 262  * - start will set the state to UP
 263  *
 264  * PENDING: PHY device is coming up, but the ethernet driver is
 265  * ready.  phy_start will set this state if the PHY state is
 266  * STARTING.
 267  * - PHY driver will set the state to UP when the PHY is ready
 268  *
 269  * UP: The PHY and attached device are ready to do work.
 270  * Interrupts should be started here.
 271  * - timer moves to AN
 272  *
 273  * AN: The PHY is currently negotiating the link state.  Link is
 274  * therefore down for now.  phy_timer will set this state when it
 275  * detects the state is UP.  config_aneg will set this state
 276  * whenever called with phydev->autoneg set to AUTONEG_ENABLE.
 277  * - If autonegotiation finishes, but there's no link, it sets
 278  *   the state to NOLINK.
 279  * - If aneg finishes with link, it sets the state to RUNNING,
 280  *   and calls adjust_link
 281  * - If autonegotiation did not finish after an arbitrary amount
 282  *   of time, autonegotiation should be tried again if the PHY
 283  *   supports "magic" autonegotiation (back to AN)
 284  * - If it didn't finish, and no magic_aneg, move to FORCING.
 285  *
 286  * NOLINK: PHY is up, but not currently plugged in.
 287  * - If the timer notes that the link comes back, we move to RUNNING
 288  * - config_aneg moves to AN
 289  * - phy_stop moves to HALTED
 290  *
 291  * FORCING: PHY is being configured with forced settings
 292  * - if link is up, move to RUNNING
 293  * - If link is down, we drop to the next highest setting, and
 294  *   retry (FORCING) after a timeout
 295  * - phy_stop moves to HALTED
 296  *
 297  * RUNNING: PHY is currently up, running, and possibly sending
 298  * and/or receiving packets
 299  * - timer will set CHANGELINK if we're polling (this ensures the
 300  *   link state is polled every other cycle of this state machine,
 301  *   which makes it every other second)
 302  * - irq will set CHANGELINK
 303  * - config_aneg will set AN
 304  * - phy_stop moves to HALTED
 305  *
 306  * CHANGELINK: PHY experienced a change in link state
 307  * - timer moves to RUNNING if link
 308  * - timer moves to NOLINK if the link is down
 309  * - phy_stop moves to HALTED
 310  *
 311  * HALTED: PHY is up, but no polling or interrupts are done. Or
 312  * PHY is in an error state.
 313  *
 314  * - phy_start moves to RESUMING
 315  *
 316  * RESUMING: PHY was halted, but now wants to run again.
 317  * - If we are forcing, or aneg is done, timer moves to RUNNING
 318  * - If aneg is not done, timer moves to AN
 319  * - phy_stop moves to HALTED
 320  */
 321 enum phy_state {
 322         PHY_DOWN = 0,
 323         PHY_STARTING,
 324         PHY_READY,
 325         PHY_PENDING,
 326         PHY_UP,
 327         PHY_AN,
 328         PHY_RUNNING,
 329         PHY_NOLINK,
 330         PHY_FORCING,
 331         PHY_CHANGELINK,
 332         PHY_HALTED,
 333         PHY_RESUMING
 334 };
 335
 336 /**
 337  * struct phy_c45_device_ids - 802.3-c45 Device Identifiers
 338  * @devices_in_package: Bit vector of devices present.
 339  * @device_ids: The device identifer for each present device.
 340  */
 341 struct phy_c45_device_ids {
 342         u32 devices_in_package;
 343         u32 device_ids[8];
 344 };
 345
 346 /* phy_device: An instance of a PHY
 347  *
 348  * drv: Pointer to the driver for this PHY instance
 349  * phy_id: UID for this device found during discovery
 350  * c45_ids: 802.3-c45 Device Identifers if is_c45.
 351  * is_c45:  Set to true if this phy uses clause 45 addressing.
 352  * is_internal: Set to true if this phy is internal to a MAC.
 353  * is_pseudo_fixed_link: Set to true if this phy is an Ethernet switch, etc.
 354  * has_fixups: Set to true if this phy has fixups/quirks.
 355  * suspended: Set to true if this phy has been suspended successfully.
 356  * state: state of the PHY for management purposes
 357  * dev_flags: Device-specific flags used by the PHY driver.
 358  * link_timeout: The number of timer firings to wait before the
 359  * giving up on the current attempt at acquiring a link
 360  * irq: IRQ number of the PHY's interrupt (-1 if none)
 361  * phy_timer: The timer for handling the state machine
 362  * phy_queue: A work_queue for the phy_mac_interrupt
 363  * attached_dev: The attached enet driver's device instance ptr
 364  * adjust_link: Callback for the enet controller to respond to
 365  * changes in the link state.
 366  *
 367  * speed, duplex, pause, supported, advertising, lp_advertising,
 368  * and autoneg are used like in mii_if_info
 369  *
 370  * interrupts currently only supports enabled or disabled,
 371  * but could be changed in the future to support enabling
 372  * and disabling specific interrupts
 373  *
 374  * Contains some infrastructure for polling and interrupt
 375  * handling, as well as handling shifts in PHY hardware state
 376  */
 377 struct phy_device {
 378         struct mdio_device mdio;
 379
 380         /* Information about the PHY type */
 381         /* And management functions */
 382         struct phy_driver *drv;
 383
 384         u32 phy_id;
 385
 386         struct phy_c45_device_ids c45_ids;
 387         bool is_c45;
 388         bool is_internal;
 389         bool is_pseudo_fixed_link;
 390         bool has_fixups;
 391         bool suspended;
 392
 393         enum phy_state state;
 394
 395         u32 dev_flags;
 396
 397         phy_interface_t interface;
 398
 399         /*
 400          * forced speed & duplex (no autoneg)
 401          * partner speed & duplex & pause (autoneg)
 402          */
 403         int speed;
 404         int duplex;
 405         int pause;
 406         int asym_pause;
 407
 408         /* The most recently read link state */
 409         int link;
 410
 411         /* Enabled Interrupts */
 412         u32 interrupts;
 413
 414         /* Union of PHY and Attached devices' supported modes */
 415         /* See mii.h for more info */
 416         u32 supported;
 417         u32 advertising;
 418         u32 lp_advertising;
 419
 420         /* Energy efficient ethernet modes which should be prohibited */
 421         u32 eee_broken_modes;
 422
 423         int autoneg;
 424
 425         int link_timeout;
 426
 427 #ifdef CONFIG_LED_TRIGGER_PHY
 428         struct phy_led_trigger *phy_led_triggers;
 429         unsigned int phy_num_led_triggers;
 430         struct phy_led_trigger *last_triggered;
 431 #endif
 432
 433         /*
 434          * Interrupt number for this PHY
 435          * -1 means no interrupt
 436          */
 437         int irq;
 438
 439         /* private data pointer */
 440         /* For use by PHYs to maintain extra state */
 441         void *priv;
 442
 443         /* Interrupt and Polling infrastructure */
 444         struct work_struct phy_queue;
 445         struct delayed_work state_queue;
 446         atomic_t irq_disable;
 447
 448         struct mutex lock;
 449
 450         struct net_device *attached_dev;
 451
 452         u8 mdix;
 453         u8 mdix_ctrl;
 454
 455         void (*adjust_link)(struct net_device *dev);
 456 };
 457 #define to_phy_device(d) container_of(to_mdio_device(d), \
 458                                       struct phy_device, mdio)
 459
 460 /* struct phy_driver: Driver structure for a particular PHY type
 461  *
 462  * driver_data: static driver data
 463  * phy_id: The result of reading the UID registers of this PHY
 464  *   type, and ANDing them with the phy_id_mask.  This driver
 465  *   only works for PHYs with IDs which match this field
 466  * name: The friendly name of this PHY type
 467  * phy_id_mask: Defines the important bits of the phy_id
 468  * features: A list of features (speed, duplex, etc) supported
 469  *   by this PHY
 470  * flags: A bitfield defining certain other features this PHY
 471  *   supports (like interrupts)
 472  *
 473  * The drivers must implement config_aneg and read_status.  All
 474  * other functions are optional. Note that none of these
 475  * functions should be called from interrupt time.  The goal is
 476  * for the bus read/write functions to be able to block when the
 477  * bus transaction is happening, and be freed up by an interrupt
 478  * (The MPC85xx has this ability, though it is not currently
 479  * supported in the driver).
 480  */
 481 struct phy_driver {
 482         struct mdio_driver_common mdiodrv;
 483         u32 phy_id;
 484         char *name;
 485         unsigned int phy_id_mask;
 486         u32 features;
 487         u32 flags;
 488         const void *driver_data;
 489
 490         /*
 491          * Called to issue a PHY software reset
 492          */
 493         int (*soft_reset)(struct phy_device *phydev);
 494
 495         /*
 496          * Called to initialize the PHY,
 497          * including after a reset
 498          */
 499         int (*config_init)(struct phy_device *phydev);
 500
 501         /*
 502          * Called during discovery.  Used to set
 503          * up device-specific structures, if any
 504          */
 505         int (*probe)(struct phy_device *phydev);
 506
 507         /* PHY Power Management */
 508         int (*suspend)(struct phy_device *phydev);
 509         int (*resume)(struct phy_device *phydev);
 510
 511         /*
 512          * Configures the advertisement and resets
 513          * autonegotiation if phydev->autoneg is on,
 514          * forces the speed to the current settings in phydev
 515          * if phydev->autoneg is off
 516          */
 517         int (*config_aneg)(struct phy_device *phydev);
 518
 519         /* Determines the auto negotiation result */
 520         int (*aneg_done)(struct phy_device *phydev);
 521
 522         /* Determines the negotiated speed and duplex */
 523         int (*read_status)(struct phy_device *phydev);
 524
 525         /* Clears any pending interrupts */
 526         int (*ack_interrupt)(struct phy_device *phydev);
 527
 528         /* Enables or disables interrupts */
 529         int (*config_intr)(struct phy_device *phydev);
 530
 531         /*
 532          * Checks if the PHY generated an interrupt.
 533          * For multi-PHY devices with shared PHY interrupt pin
 534          */
 535         int (*did_interrupt)(struct phy_device *phydev);
 536
 537         /* Clears up any memory if needed */
 538         void (*remove)(struct phy_device *phydev);
 539
 540         /* Returns true if this is a suitable driver for the given
 541          * phydev.  If NULL, matching is based on phy_id and
 542          * phy_id_mask.
 543          */
 544         int (*match_phy_device)(struct phy_device *phydev);
 545
 546         /* Handles ethtool queries for hardware time stamping. */
 547         int (*ts_info)(struct phy_device *phydev, struct ethtool_ts_info *ti);
 548
 549         /* Handles SIOCSHWTSTAMP ioctl for hardware time stamping. */
 550         int  (*hwtstamp)(struct phy_device *phydev, struct ifreq *ifr);
 551
 552         /*
 553          * Requests a Rx timestamp for 'skb'. If the skb is accepted,
 554          * the phy driver promises to deliver it using netif_rx() as
 555          * soon as a timestamp becomes available. One of the
 556          * PTP_CLASS_ values is passed in 'type'. The function must
 557          * return true if the skb is accepted for delivery.
 558          */
 559         bool (*rxtstamp)(struct phy_device *dev, struct sk_buff *skb, int type);
 560
 561         /*
 562          * Requests a Tx timestamp for 'skb'. The phy driver promises
 563          * to deliver it using skb_complete_tx_timestamp() as soon as a
 564          * timestamp becomes available. One of the PTP_CLASS_ values
 565          * is passed in 'type'.
 566          */
 567         void (*txtstamp)(struct phy_device *dev, struct sk_buff *skb, int type);
 568
 569         /* Some devices (e.g. qnap TS-119P II) require PHY register changes to
 570          * enable Wake on LAN, so set_wol is provided to be called in the
 571          * ethernet driver's set_wol function. */
 572         int (*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
 573
 574         /* See set_wol, but for checking whether Wake on LAN is enabled. */
 575         void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
 576
 577         /*
 578          * Called to inform a PHY device driver when the core is about to
 579          * change the link state. This callback is supposed to be used as
 580          * fixup hook for drivers that need to take action when the link
 581          * state changes. Drivers are by no means allowed to mess with the
 582          * PHY device structure in their implementations.
 583          */
 584         void (*link_change_notify)(struct phy_device *dev);
 585
 586         /* A function provided by a phy specific driver to override the
 587          * the PHY driver framework support for reading a MMD register
 588          * from the PHY. If not supported, return -1. This function is
 589          * optional for PHY specific drivers, if not provided then the
 590          * default MMD read function is used by the PHY framework.
 591          */
 592         int (*read_mmd_indirect)(struct phy_device *dev, int ptrad,
 593                                  int devnum, int regnum);
 594
 595         /* A function provided by a phy specific driver to override the
 596          * the PHY driver framework support for writing a MMD register
 597          * from the PHY. This function is optional for PHY specific drivers,
 598          * if not provided then the default MMD read function is used by
 599          * the PHY framework.
 600          */
 601         void (*write_mmd_indirect)(struct phy_device *dev, int ptrad,
 602                                    int devnum, int regnum, u32 val);
 603
 604         /* Get the size and type of the eeprom contained within a plug-in
 605          * module */
 606         int (*module_info)(struct phy_device *dev,
 607                            struct ethtool_modinfo *modinfo);
 608
 609         /* Get the eeprom information from the plug-in module */
 610         int (*module_eeprom)(struct phy_device *dev,
 611                              struct ethtool_eeprom *ee, u8 *data);
 612
 613         /* Get statistics from the phy using ethtool */
 614         int (*get_sset_count)(struct phy_device *dev);
 615         void (*get_strings)(struct phy_device *dev, u8 *data);
 616         void (*get_stats)(struct phy_device *dev,
 617                           struct ethtool_stats *stats, u64 *data);
 618
 619         /* Get and Set PHY tunables */
 620         int (*get_tunable)(struct phy_device *dev,
 621                            struct ethtool_tunable *tuna, void *data);
 622         int (*set_tunable)(struct phy_device *dev,
 623                             struct ethtool_tunable *tuna,
 624                             const void *data);
 625 };
 626 #define to_phy_driver(d) container_of(to_mdio_common_driver(d),         \
 627                                       struct phy_driver, mdiodrv)
 628
 629 #define PHY_ANY_ID "MATCH ANY PHY"
 630 #define PHY_ANY_UID 0xffffffff
 631
 632 /* A Structure for boards to register fixups with the PHY Lib */
 633 struct phy_fixup {
 634         struct list_head list;
 635         char bus_id[20];
 636         u32 phy_uid;
 637         u32 phy_uid_mask;
 638         int (*run)(struct phy_device *phydev);
 639 };
 640
 641 /**
 642  * phy_read_mmd - Convenience function for reading a register
 643  * from an MMD on a given PHY.
 644  * @phydev: The phy_device struct
 645  * @devad: The MMD to read from
 646  * @regnum: The register on the MMD to read
 647  *
 648  * Same rules as for phy_read();
 649  */
 650 static inline int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum)
 651 {
 652         if (!phydev->is_c45)
 653                 return -EOPNOTSUPP;
 654
 655         return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr,
 656                             MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff));
 657 }
 658
 659 /**
 660  * phy_read_mmd_indirect - reads data from the MMD registers
 661  * @phydev: The PHY device bus
 662  * @prtad: MMD Address
 663  * @addr: PHY address on the MII bus
 664  *
 665  * Description: it reads data from the MMD registers (clause 22 to access to
 666  * clause 45) of the specified phy address.
 667  */
 668 int phy_read_mmd_indirect(struct phy_device *phydev, int prtad, int devad);
 669
 670 /**
 671  * phy_read - Convenience function for reading a given PHY register
 672  * @phydev: the phy_device struct
 673  * @regnum: register number to read
 674  *
 675  * NOTE: MUST NOT be called from interrupt context,
 676  * because the bus read/write functions may wait for an interrupt
 677  * to conclude the operation.
 678  */
 679 static inline int phy_read(struct phy_device *phydev, u32 regnum)
 680 {
 681         return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum);
 682 }
 683
 684 /**
 685  * phy_write - Convenience function for writing a given PHY register
 686  * @phydev: the phy_device struct
 687  * @regnum: register number to write
 688  * @val: value to write to @regnum
 689  *
 690  * NOTE: MUST NOT be called from interrupt context,
 691  * because the bus read/write functions may wait for an interrupt
 692  * to conclude the operation.
 693  */
 694 static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val)
 695 {
 696         return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val);
 697 }
 698
 699 /**
 700  * phy_interrupt_is_valid - Convenience function for testing a given PHY irq
 701  * @phydev: the phy_device struct
 702  *
 703  * NOTE: must be kept in sync with addition/removal of PHY_POLL and
 704  * PHY_IGNORE_INTERRUPT
 705  */
 706 static inline bool phy_interrupt_is_valid(struct phy_device *phydev)
 707 {
 708         return phydev->irq != PHY_POLL && phydev->irq != PHY_IGNORE_INTERRUPT;
 709 }
 710
 711 /**
 712  * phy_is_internal - Convenience function for testing if a PHY is internal
 713  * @phydev: the phy_device struct
 714  */
 715 static inline bool phy_is_internal(struct phy_device *phydev)
 716 {
 717         return phydev->is_internal;
 718 }
 719
 720 /**
 721  * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
 722  * is RGMII (all variants)
 723  * @phydev: the phy_device struct
 724  */
 725 static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
 726 {
 727         return phydev->interface >= PHY_INTERFACE_MODE_RGMII &&
 728                 phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID;
 729 };
 730
 731 /*
 732  * phy_is_pseudo_fixed_link - Convenience function for testing if this
 733  * PHY is the CPU port facing side of an Ethernet switch, or similar.
 734  * @phydev: the phy_device struct
 735  */
 736 static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev)
 737 {
 738         return phydev->is_pseudo_fixed_link;
 739 }
 740
 741 /**
 742  * phy_write_mmd - Convenience function for writing a register
 743  * on an MMD on a given PHY.
 744  * @phydev: The phy_device struct
 745  * @devad: The MMD to read from
 746  * @regnum: The register on the MMD to read
 747  * @val: value to write to @regnum
 748  *
 749  * Same rules as for phy_write();
 750  */
 751 static inline int phy_write_mmd(struct phy_device *phydev, int devad,
 752                                 u32 regnum, u16 val)
 753 {
 754         if (!phydev->is_c45)
 755                 return -EOPNOTSUPP;
 756
 757         regnum = MII_ADDR_C45 | ((devad & 0x1f) << 16) | (regnum & 0xffff);
 758
 759         return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val);
 760 }
 761
 762 /**
 763  * phy_write_mmd_indirect - writes data to the MMD registers
 764  * @phydev: The PHY device
 765  * @prtad: MMD Address
 766  * @devad: MMD DEVAD
 767  * @data: data to write in the MMD register
 768  *
 769  * Description: Write data from the MMD registers of the specified
 770  * phy address.
 771  */
 772 void phy_write_mmd_indirect(struct phy_device *phydev, int prtad,
 773                             int devad, u32 data);
 774
 775 struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
 776                                      bool is_c45,
 777                                      struct phy_c45_device_ids *c45_ids);
 778 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45);
 779 int phy_device_register(struct phy_device *phy);
 780 void phy_device_remove(struct phy_device *phydev);
 781 int phy_init_hw(struct phy_device *phydev);
 782 int phy_suspend(struct phy_device *phydev);
 783 int phy_resume(struct phy_device *phydev);
 784 struct phy_device *phy_attach(struct net_device *dev, const char *bus_id,
 785                               phy_interface_t interface);
 786 struct phy_device *phy_find_first(struct mii_bus *bus);
 787 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 788                       u32 flags, phy_interface_t interface);
 789 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
 790                        void (*handler)(struct net_device *),
 791                        phy_interface_t interface);
 792 struct phy_device *phy_connect(struct net_device *dev, const char *bus_id,
 793                                void (*handler)(struct net_device *),
 794                                phy_interface_t interface);
 795 void phy_disconnect(struct phy_device *phydev);
 796 void phy_detach(struct phy_device *phydev);
 797 void phy_start(struct phy_device *phydev);
 798 void phy_stop(struct phy_device *phydev);
 799 int phy_start_aneg(struct phy_device *phydev);
 800 int phy_aneg_done(struct phy_device *phydev);
 801
 802 int phy_stop_interrupts(struct phy_device *phydev);
 803
 804 static inline int phy_read_status(struct phy_device *phydev)
 805 {
 806         return phydev->drv->read_status(phydev);
 807 }
 808
 809 #define phydev_err(_phydev, format, args...)    \
 810         dev_err(&_phydev->mdio.dev, format, ##args)
 811
 812 #define phydev_dbg(_phydev, format, args...)    \
 813         dev_dbg(&_phydev->mdio.dev, format, ##args);
 814
 815 static inline const char *phydev_name(const struct phy_device *phydev)
 816 {
 817         return dev_name(&phydev->mdio.dev);
 818 }
 819
 820 void phy_attached_print(struct phy_device *phydev, const char *fmt, ...)
 821         __printf(2, 3);
 822 void phy_attached_info(struct phy_device *phydev);
 823 int genphy_config_init(struct phy_device *phydev);
 824 int genphy_setup_forced(struct phy_device *phydev);
 825 int genphy_restart_aneg(struct phy_device *phydev);
 826 int genphy_config_aneg(struct phy_device *phydev);
 827 int genphy_aneg_done(struct phy_device *phydev);
 828 int genphy_update_link(struct phy_device *phydev);
 829 int genphy_read_status(struct phy_device *phydev);
 830 int genphy_suspend(struct phy_device *phydev);
 831 int genphy_resume(struct phy_device *phydev);
 832 int genphy_soft_reset(struct phy_device *phydev);
 833 void phy_driver_unregister(struct phy_driver *drv);
 834 void phy_drivers_unregister(struct phy_driver *drv, int n);
 835 int phy_driver_register(struct phy_driver *new_driver, struct module *owner);
 836 int phy_drivers_register(struct phy_driver *new_driver, int n,
 837                          struct module *owner);
 838 void phy_state_machine(struct work_struct *work);
 839 void phy_change(struct phy_device *phydev);
 840 void phy_change_work(struct work_struct *work);
 841 void phy_mac_interrupt(struct phy_device *phydev, int new_link);
 842 void phy_start_machine(struct phy_device *phydev);
 843 void phy_stop_machine(struct phy_device *phydev);
 844 int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
 845 int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd);
 846 int phy_ethtool_ksettings_get(struct phy_device *phydev,
 847                               struct ethtool_link_ksettings *cmd);
 848 int phy_ethtool_ksettings_set(struct phy_device *phydev,
 849                               const struct ethtool_link_ksettings *cmd);
 850 int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd);
 851 int phy_start_interrupts(struct phy_device *phydev);
 852 void phy_print_status(struct phy_device *phydev);
 853 void phy_device_free(struct phy_device *phydev);
 854 int phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
 855
 856 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
 857                        int (*run)(struct phy_device *));
 858 int phy_register_fixup_for_id(const char *bus_id,
 859                               int (*run)(struct phy_device *));
 860 int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
 861                                int (*run)(struct phy_device *));
 862
 863 int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask);
 864 int phy_unregister_fixup_for_id(const char *bus_id);
 865 int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask);
 866
 867 int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable);
 868 int phy_get_eee_err(struct phy_device *phydev);
 869 int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data);
 870 int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data);
 871 int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);
 872 void phy_ethtool_get_wol(struct phy_device *phydev,
 873                          struct ethtool_wolinfo *wol);
 874 int phy_ethtool_get_link_ksettings(struct net_device *ndev,
 875                                    struct ethtool_link_ksettings *cmd);
 876 int phy_ethtool_set_link_ksettings(struct net_device *ndev,
 877                                    const struct ethtool_link_ksettings *cmd);
 878 int phy_ethtool_nway_reset(struct net_device *ndev);
 879
 880 int __init mdio_bus_init(void);
 881 void mdio_bus_exit(void);
 882
 883 extern struct bus_type mdio_bus_type;
 884
 885 /**
 886  * module_phy_driver() - Helper macro for registering PHY drivers
 887  * @__phy_drivers: array of PHY drivers to register
 888  *
 889  * Helper macro for PHY drivers which do not do anything special in module
 890  * init/exit. Each module may only use this macro once, and calling it
 891  * replaces module_init() and module_exit().
 892  */
 893 #define phy_module_driver(__phy_drivers, __count)                       \
 894 static int __init phy_module_init(void)                                 \
 895 {                                                                       \
 896         return phy_drivers_register(__phy_drivers, __count, THIS_MODULE); \
 897 }                                                                       \
 898 module_init(phy_module_init);                                           \
 899 static void __exit phy_module_exit(void)                                \
 900 {                                                                       \
 901         phy_drivers_unregister(__phy_drivers, __count);                 \
 902 }                                                                       \
 903 module_exit(phy_module_exit)
 904
 905 #define module_phy_driver(__phy_drivers)                                \
 906         phy_module_driver(__phy_drivers, ARRAY_SIZE(__phy_drivers))
 907
 908 #endif /* __PHY_H */