1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Framework and drivers for configuring and reading different PHYs 4 * Based on code in sungem_phy.c and (long-removed) gianfar_phy.c 5 * 6 * Author: Andy Fleming 7 * 8 * Copyright (c) 2004 Freescale Semiconductor, Inc. 9 */ 10 11 #ifndef __PHY_H 12 #define __PHY_H 13 14 #include <linux/compiler.h> 15 #include <linux/spinlock.h> 16 #include <linux/ethtool.h> 17 #include <linux/linkmode.h> 18 #include <linux/mdio.h> 19 #include <linux/mii.h> 20 #include <linux/module.h> 21 #include <linux/timer.h> 22 #include <linux/workqueue.h> 23 #include <linux/mod_devicetable.h> 24 25 #include <linux/atomic.h> 26 27 #define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \ 28 SUPPORTED_TP | \ 29 SUPPORTED_MII) 30 31 #define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \ 32 SUPPORTED_10baseT_Full) 33 34 #define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \ 35 SUPPORTED_100baseT_Full) 36 37 #define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \ 38 SUPPORTED_1000baseT_Full) 39 40 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_features) __ro_after_init; 41 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1_features) __ro_after_init; 42 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features) __ro_after_init; 43 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_fibre_features) __ro_after_init; 44 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_all_ports_features) __ro_after_init; 45 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_features) __ro_after_init; 46 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_fec_features) __ro_after_init; 47 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_full_features) __ro_after_init; 48 49 #define PHY_BASIC_FEATURES ((unsigned long *)&phy_basic_features) 50 #define PHY_BASIC_T1_FEATURES ((unsigned long *)&phy_basic_t1_features) 51 #define PHY_GBIT_FEATURES ((unsigned long *)&phy_gbit_features) 52 #define PHY_GBIT_FIBRE_FEATURES ((unsigned long *)&phy_gbit_fibre_features) 53 #define PHY_GBIT_ALL_PORTS_FEATURES ((unsigned long *)&phy_gbit_all_ports_features) 54 #define PHY_10GBIT_FEATURES ((unsigned long *)&phy_10gbit_features) 55 #define PHY_10GBIT_FEC_FEATURES ((unsigned long *)&phy_10gbit_fec_features) 56 #define PHY_10GBIT_FULL_FEATURES ((unsigned long *)&phy_10gbit_full_features) 57 58 extern const int phy_10_100_features_array[4]; 59 extern const int phy_basic_t1_features_array[2]; 60 extern const int phy_gbit_features_array[2]; 61 extern const int phy_10gbit_features_array[1]; 62 63 /* 64 * Set phydev->irq to PHY_POLL if interrupts are not supported, 65 * or not desired for this PHY. Set to PHY_IGNORE_INTERRUPT if 66 * the attached driver handles the interrupt 67 */ 68 #define PHY_POLL -1 69 #define PHY_IGNORE_INTERRUPT -2 70 71 #define PHY_IS_INTERNAL 0x00000001 72 #define PHY_RST_AFTER_CLK_EN 0x00000002 73 #define MDIO_DEVICE_IS_PHY 0x80000000 74 75 /* Interface Mode definitions */ 76 typedef enum { 77 PHY_INTERFACE_MODE_NA, 78 PHY_INTERFACE_MODE_INTERNAL, 79 PHY_INTERFACE_MODE_MII, 80 PHY_INTERFACE_MODE_GMII, 81 PHY_INTERFACE_MODE_SGMII, 82 PHY_INTERFACE_MODE_TBI, 83 PHY_INTERFACE_MODE_REVMII, 84 PHY_INTERFACE_MODE_RMII, 85 PHY_INTERFACE_MODE_RGMII, 86 PHY_INTERFACE_MODE_RGMII_ID, 87 PHY_INTERFACE_MODE_RGMII_RXID, 88 PHY_INTERFACE_MODE_RGMII_TXID, 89 PHY_INTERFACE_MODE_RTBI, 90 PHY_INTERFACE_MODE_SMII, 91 PHY_INTERFACE_MODE_XGMII, 92 PHY_INTERFACE_MODE_MOCA, 93 PHY_INTERFACE_MODE_QSGMII, 94 PHY_INTERFACE_MODE_TRGMII, 95 PHY_INTERFACE_MODE_1000BASEX, 96 PHY_INTERFACE_MODE_2500BASEX, 97 PHY_INTERFACE_MODE_RXAUI, 98 PHY_INTERFACE_MODE_XAUI, 99 /* 10GBASE-KR, XFI, SFI - single lane 10G Serdes */ 100 PHY_INTERFACE_MODE_10GKR, 101 PHY_INTERFACE_MODE_USXGMII, 102 PHY_INTERFACE_MODE_MAX, 103 } phy_interface_t; 104 105 /** 106 * phy_supported_speeds - return all speeds currently supported by a phy device 107 * @phy: The phy device to return supported speeds of. 108 * @speeds: buffer to store supported speeds in. 109 * @size: size of speeds buffer. 110 * 111 * Description: Returns the number of supported speeds, and fills 112 * the speeds buffer with the supported speeds. If speeds buffer is 113 * too small to contain all currently supported speeds, will return as 114 * many speeds as can fit. 115 */ 116 unsigned int phy_supported_speeds(struct phy_device *phy, 117 unsigned int *speeds, 118 unsigned int size); 119 120 /** 121 * phy_modes - map phy_interface_t enum to device tree binding of phy-mode 122 * @interface: enum phy_interface_t value 123 * 124 * Description: maps 'enum phy_interface_t' defined in this file 125 * into the device tree binding of 'phy-mode', so that Ethernet 126 * device driver can get phy interface from device tree. 127 */ 128 static inline const char *phy_modes(phy_interface_t interface) 129 { 130 switch (interface) { 131 case PHY_INTERFACE_MODE_NA: 132 return ""; 133 case PHY_INTERFACE_MODE_INTERNAL: 134 return "internal"; 135 case PHY_INTERFACE_MODE_MII: 136 return "mii"; 137 case PHY_INTERFACE_MODE_GMII: 138 return "gmii"; 139 case PHY_INTERFACE_MODE_SGMII: 140 return "sgmii"; 141 case PHY_INTERFACE_MODE_TBI: 142 return "tbi"; 143 case PHY_INTERFACE_MODE_REVMII: 144 return "rev-mii"; 145 case PHY_INTERFACE_MODE_RMII: 146 return "rmii"; 147 case PHY_INTERFACE_MODE_RGMII: 148 return "rgmii"; 149 case PHY_INTERFACE_MODE_RGMII_ID: 150 return "rgmii-id"; 151 case PHY_INTERFACE_MODE_RGMII_RXID: 152 return "rgmii-rxid"; 153 case PHY_INTERFACE_MODE_RGMII_TXID: 154 return "rgmii-txid"; 155 case PHY_INTERFACE_MODE_RTBI: 156 return "rtbi"; 157 case PHY_INTERFACE_MODE_SMII: 158 return "smii"; 159 case PHY_INTERFACE_MODE_XGMII: 160 return "xgmii"; 161 case PHY_INTERFACE_MODE_MOCA: 162 return "moca"; 163 case PHY_INTERFACE_MODE_QSGMII: 164 return "qsgmii"; 165 case PHY_INTERFACE_MODE_TRGMII: 166 return "trgmii"; 167 case PHY_INTERFACE_MODE_1000BASEX: 168 return "1000base-x"; 169 case PHY_INTERFACE_MODE_2500BASEX: 170 return "2500base-x"; 171 case PHY_INTERFACE_MODE_RXAUI: 172 return "rxaui"; 173 case PHY_INTERFACE_MODE_XAUI: 174 return "xaui"; 175 case PHY_INTERFACE_MODE_10GKR: 176 return "10gbase-kr"; 177 case PHY_INTERFACE_MODE_USXGMII: 178 return "usxgmii"; 179 default: 180 return "unknown"; 181 } 182 } 183 184 185 #define PHY_INIT_TIMEOUT 100000 186 #define PHY_FORCE_TIMEOUT 10 187 188 #define PHY_MAX_ADDR 32 189 190 /* Used when trying to connect to a specific phy (mii bus id:phy device id) */ 191 #define PHY_ID_FMT "%s:%02x" 192 193 #define MII_BUS_ID_SIZE 61 194 195 /* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit 196 IEEE 802.3ae clause 45 addressing mode used by 10GIGE phy chips. */ 197 #define MII_ADDR_C45 (1<<30) 198 199 struct device; 200 struct phylink; 201 struct sk_buff; 202 203 /* 204 * The Bus class for PHYs. Devices which provide access to 205 * PHYs should register using this structure 206 */ 207 struct mii_bus { 208 struct module *owner; 209 const char *name; 210 char id[MII_BUS_ID_SIZE]; 211 void *priv; 212 int (*read)(struct mii_bus *bus, int addr, int regnum); 213 int (*write)(struct mii_bus *bus, int addr, int regnum, u16 val); 214 int (*reset)(struct mii_bus *bus); 215 216 /* 217 * A lock to ensure that only one thing can read/write 218 * the MDIO bus at a time 219 */ 220 struct mutex mdio_lock; 221 222 struct device *parent; 223 enum { 224 MDIOBUS_ALLOCATED = 1, 225 MDIOBUS_REGISTERED, 226 MDIOBUS_UNREGISTERED, 227 MDIOBUS_RELEASED, 228 } state; 229 struct device dev; 230 231 /* list of all PHYs on bus */ 232 struct mdio_device *mdio_map[PHY_MAX_ADDR]; 233 234 /* PHY addresses to be ignored when probing */ 235 u32 phy_mask; 236 237 /* PHY addresses to ignore the TA/read failure */ 238 u32 phy_ignore_ta_mask; 239 240 /* 241 * An array of interrupts, each PHY's interrupt at the index 242 * matching its address 243 */ 244 int irq[PHY_MAX_ADDR]; 245 246 /* GPIO reset pulse width in microseconds */ 247 int reset_delay_us; 248 /* RESET GPIO descriptor pointer */ 249 struct gpio_desc *reset_gpiod; 250 }; 251 #define to_mii_bus(d) container_of(d, struct mii_bus, dev) 252 253 struct mii_bus *mdiobus_alloc_size(size_t); 254 static inline struct mii_bus *mdiobus_alloc(void) 255 { 256 return mdiobus_alloc_size(0); 257 } 258 259 int __mdiobus_register(struct mii_bus *bus, struct module *owner); 260 #define mdiobus_register(bus) __mdiobus_register(bus, THIS_MODULE) 261 void mdiobus_unregister(struct mii_bus *bus); 262 void mdiobus_free(struct mii_bus *bus); 263 struct mii_bus *devm_mdiobus_alloc_size(struct device *dev, int sizeof_priv); 264 static inline struct mii_bus *devm_mdiobus_alloc(struct device *dev) 265 { 266 return devm_mdiobus_alloc_size(dev, 0); 267 } 268 269 void devm_mdiobus_free(struct device *dev, struct mii_bus *bus); 270 struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr); 271 272 #define PHY_INTERRUPT_DISABLED false 273 #define PHY_INTERRUPT_ENABLED true 274 275 /* PHY state machine states: 276 * 277 * DOWN: PHY device and driver are not ready for anything. probe 278 * should be called if and only if the PHY is in this state, 279 * given that the PHY device exists. 280 * - PHY driver probe function will set the state to READY 281 * 282 * READY: PHY is ready to send and receive packets, but the 283 * controller is not. By default, PHYs which do not implement 284 * probe will be set to this state by phy_probe(). 285 * - start will set the state to UP 286 * 287 * UP: The PHY and attached device are ready to do work. 288 * Interrupts should be started here. 289 * - timer moves to NOLINK or RUNNING 290 * 291 * NOLINK: PHY is up, but not currently plugged in. 292 * - irq or timer will set RUNNING if link comes back 293 * - phy_stop moves to HALTED 294 * 295 * RUNNING: PHY is currently up, running, and possibly sending 296 * and/or receiving packets 297 * - irq or timer will set NOLINK if link goes down 298 * - phy_stop moves to HALTED 299 * 300 * HALTED: PHY is up, but no polling or interrupts are done. Or 301 * PHY is in an error state. 302 * - phy_start moves to UP 303 */ 304 enum phy_state { 305 PHY_DOWN = 0, 306 PHY_READY, 307 PHY_HALTED, 308 PHY_UP, 309 PHY_RUNNING, 310 PHY_NOLINK, 311 }; 312 313 /** 314 * struct phy_c45_device_ids - 802.3-c45 Device Identifiers 315 * @devices_in_package: Bit vector of devices present. 316 * @device_ids: The device identifer for each present device. 317 */ 318 struct phy_c45_device_ids { 319 u32 devices_in_package; 320 u32 device_ids[8]; 321 }; 322 323 /* phy_device: An instance of a PHY 324 * 325 * drv: Pointer to the driver for this PHY instance 326 * phy_id: UID for this device found during discovery 327 * c45_ids: 802.3-c45 Device Identifers if is_c45. 328 * is_c45: Set to true if this phy uses clause 45 addressing. 329 * is_internal: Set to true if this phy is internal to a MAC. 330 * is_pseudo_fixed_link: Set to true if this phy is an Ethernet switch, etc. 331 * is_gigabit_capable: Set to true if PHY supports 1000Mbps 332 * has_fixups: Set to true if this phy has fixups/quirks. 333 * suspended: Set to true if this phy has been suspended successfully. 334 * sysfs_links: Internal boolean tracking sysfs symbolic links setup/removal. 335 * loopback_enabled: Set true if this phy has been loopbacked successfully. 336 * state: state of the PHY for management purposes 337 * dev_flags: Device-specific flags used by the PHY driver. 338 * irq: IRQ number of the PHY's interrupt (-1 if none) 339 * phy_timer: The timer for handling the state machine 340 * attached_dev: The attached enet driver's device instance ptr 341 * adjust_link: Callback for the enet controller to respond to 342 * changes in the link state. 343 * 344 * speed, duplex, pause, supported, advertising, lp_advertising, 345 * and autoneg are used like in mii_if_info 346 * 347 * interrupts currently only supports enabled or disabled, 348 * but could be changed in the future to support enabling 349 * and disabling specific interrupts 350 * 351 * Contains some infrastructure for polling and interrupt 352 * handling, as well as handling shifts in PHY hardware state 353 */ 354 struct phy_device { 355 struct mdio_device mdio; 356 357 /* Information about the PHY type */ 358 /* And management functions */ 359 struct phy_driver *drv; 360 361 u32 phy_id; 362 363 struct phy_c45_device_ids c45_ids; 364 unsigned is_c45:1; 365 unsigned is_internal:1; 366 unsigned is_pseudo_fixed_link:1; 367 unsigned is_gigabit_capable:1; 368 unsigned has_fixups:1; 369 unsigned suspended:1; 370 unsigned sysfs_links:1; 371 unsigned loopback_enabled:1; 372 373 unsigned autoneg:1; 374 /* The most recently read link state */ 375 unsigned link:1; 376 unsigned autoneg_complete:1; 377 378 /* Interrupts are enabled */ 379 unsigned interrupts:1; 380 381 enum phy_state state; 382 383 u32 dev_flags; 384 385 phy_interface_t interface; 386 387 /* 388 * forced speed & duplex (no autoneg) 389 * partner speed & duplex & pause (autoneg) 390 */ 391 int speed; 392 int duplex; 393 int pause; 394 int asym_pause; 395 396 /* Union of PHY and Attached devices' supported link modes */ 397 /* See ethtool.h for more info */ 398 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); 399 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); 400 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising); 401 402 /* Energy efficient ethernet modes which should be prohibited */ 403 u32 eee_broken_modes; 404 405 #ifdef CONFIG_LED_TRIGGER_PHY 406 struct phy_led_trigger *phy_led_triggers; 407 unsigned int phy_num_led_triggers; 408 struct phy_led_trigger *last_triggered; 409 410 struct phy_led_trigger *led_link_trigger; 411 #endif 412 413 /* 414 * Interrupt number for this PHY 415 * -1 means no interrupt 416 */ 417 int irq; 418 419 /* private data pointer */ 420 /* For use by PHYs to maintain extra state */ 421 void *priv; 422 423 /* Interrupt and Polling infrastructure */ 424 struct delayed_work state_queue; 425 426 struct mutex lock; 427 428 struct phylink *phylink; 429 struct net_device *attached_dev; 430 431 u8 mdix; 432 u8 mdix_ctrl; 433 434 void (*phy_link_change)(struct phy_device *, bool up, bool do_carrier); 435 void (*adjust_link)(struct net_device *dev); 436 }; 437 #define to_phy_device(d) container_of(to_mdio_device(d), \ 438 struct phy_device, mdio) 439 440 /* struct phy_driver: Driver structure for a particular PHY type 441 * 442 * driver_data: static driver data 443 * phy_id: The result of reading the UID registers of this PHY 444 * type, and ANDing them with the phy_id_mask. This driver 445 * only works for PHYs with IDs which match this field 446 * name: The friendly name of this PHY type 447 * phy_id_mask: Defines the important bits of the phy_id 448 * features: A mandatory list of features (speed, duplex, etc) 449 * supported by this PHY 450 * flags: A bitfield defining certain other features this PHY 451 * supports (like interrupts) 452 * 453 * All functions are optional. If config_aneg or read_status 454 * are not implemented, the phy core uses the genphy versions. 455 * Note that none of these functions should be called from 456 * interrupt time. The goal is for the bus read/write functions 457 * to be able to block when the bus transaction is happening, 458 * and be freed up by an interrupt (The MPC85xx has this ability, 459 * though it is not currently supported in the driver). 460 */ 461 struct phy_driver { 462 struct mdio_driver_common mdiodrv; 463 u32 phy_id; 464 char *name; 465 u32 phy_id_mask; 466 const unsigned long * const features; 467 u32 flags; 468 const void *driver_data; 469 470 /* 471 * Called to issue a PHY software reset 472 */ 473 int (*soft_reset)(struct phy_device *phydev); 474 475 /* 476 * Called to initialize the PHY, 477 * including after a reset 478 */ 479 int (*config_init)(struct phy_device *phydev); 480 481 /* 482 * Called during discovery. Used to set 483 * up device-specific structures, if any 484 */ 485 int (*probe)(struct phy_device *phydev); 486 487 /* 488 * Probe the hardware to determine what abilities it has. 489 * Should only set phydev->supported. 490 */ 491 int (*get_features)(struct phy_device *phydev); 492 493 /* PHY Power Management */ 494 int (*suspend)(struct phy_device *phydev); 495 int (*resume)(struct phy_device *phydev); 496 497 /* 498 * Configures the advertisement and resets 499 * autonegotiation if phydev->autoneg is on, 500 * forces the speed to the current settings in phydev 501 * if phydev->autoneg is off 502 */ 503 int (*config_aneg)(struct phy_device *phydev); 504 505 /* Determines the auto negotiation result */ 506 int (*aneg_done)(struct phy_device *phydev); 507 508 /* Determines the negotiated speed and duplex */ 509 int (*read_status)(struct phy_device *phydev); 510 511 /* Clears any pending interrupts */ 512 int (*ack_interrupt)(struct phy_device *phydev); 513 514 /* Enables or disables interrupts */ 515 int (*config_intr)(struct phy_device *phydev); 516 517 /* 518 * Checks if the PHY generated an interrupt. 519 * For multi-PHY devices with shared PHY interrupt pin 520 */ 521 int (*did_interrupt)(struct phy_device *phydev); 522 523 /* Override default interrupt handling */ 524 int (*handle_interrupt)(struct phy_device *phydev); 525 526 /* Clears up any memory if needed */ 527 void (*remove)(struct phy_device *phydev); 528 529 /* Returns true if this is a suitable driver for the given 530 * phydev. If NULL, matching is based on phy_id and 531 * phy_id_mask. 532 */ 533 int (*match_phy_device)(struct phy_device *phydev); 534 535 /* Handles ethtool queries for hardware time stamping. */ 536 int (*ts_info)(struct phy_device *phydev, struct ethtool_ts_info *ti); 537 538 /* Handles SIOCSHWTSTAMP ioctl for hardware time stamping. */ 539 int (*hwtstamp)(struct phy_device *phydev, struct ifreq *ifr); 540 541 /* 542 * Requests a Rx timestamp for 'skb'. If the skb is accepted, 543 * the phy driver promises to deliver it using netif_rx() as 544 * soon as a timestamp becomes available. One of the 545 * PTP_CLASS_ values is passed in 'type'. The function must 546 * return true if the skb is accepted for delivery. 547 */ 548 bool (*rxtstamp)(struct phy_device *dev, struct sk_buff *skb, int type); 549 550 /* 551 * Requests a Tx timestamp for 'skb'. The phy driver promises 552 * to deliver it using skb_complete_tx_timestamp() as soon as a 553 * timestamp becomes available. One of the PTP_CLASS_ values 554 * is passed in 'type'. 555 */ 556 void (*txtstamp)(struct phy_device *dev, struct sk_buff *skb, int type); 557 558 /* Some devices (e.g. qnap TS-119P II) require PHY register changes to 559 * enable Wake on LAN, so set_wol is provided to be called in the 560 * ethernet driver's set_wol function. */ 561 int (*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); 562 563 /* See set_wol, but for checking whether Wake on LAN is enabled. */ 564 void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); 565 566 /* 567 * Called to inform a PHY device driver when the core is about to 568 * change the link state. This callback is supposed to be used as 569 * fixup hook for drivers that need to take action when the link 570 * state changes. Drivers are by no means allowed to mess with the 571 * PHY device structure in their implementations. 572 */ 573 void (*link_change_notify)(struct phy_device *dev); 574 575 /* 576 * Phy specific driver override for reading a MMD register. 577 * This function is optional for PHY specific drivers. When 578 * not provided, the default MMD read function will be used 579 * by phy_read_mmd(), which will use either a direct read for 580 * Clause 45 PHYs or an indirect read for Clause 22 PHYs. 581 * devnum is the MMD device number within the PHY device, 582 * regnum is the register within the selected MMD device. 583 */ 584 int (*read_mmd)(struct phy_device *dev, int devnum, u16 regnum); 585 586 /* 587 * Phy specific driver override for writing a MMD register. 588 * This function is optional for PHY specific drivers. When 589 * not provided, the default MMD write function will be used 590 * by phy_write_mmd(), which will use either a direct write for 591 * Clause 45 PHYs, or an indirect write for Clause 22 PHYs. 592 * devnum is the MMD device number within the PHY device, 593 * regnum is the register within the selected MMD device. 594 * val is the value to be written. 595 */ 596 int (*write_mmd)(struct phy_device *dev, int devnum, u16 regnum, 597 u16 val); 598 599 int (*read_page)(struct phy_device *dev); 600 int (*write_page)(struct phy_device *dev, int page); 601 602 /* Get the size and type of the eeprom contained within a plug-in 603 * module */ 604 int (*module_info)(struct phy_device *dev, 605 struct ethtool_modinfo *modinfo); 606 607 /* Get the eeprom information from the plug-in module */ 608 int (*module_eeprom)(struct phy_device *dev, 609 struct ethtool_eeprom *ee, u8 *data); 610 611 /* Get statistics from the phy using ethtool */ 612 int (*get_sset_count)(struct phy_device *dev); 613 void (*get_strings)(struct phy_device *dev, u8 *data); 614 void (*get_stats)(struct phy_device *dev, 615 struct ethtool_stats *stats, u64 *data); 616 617 /* Get and Set PHY tunables */ 618 int (*get_tunable)(struct phy_device *dev, 619 struct ethtool_tunable *tuna, void *data); 620 int (*set_tunable)(struct phy_device *dev, 621 struct ethtool_tunable *tuna, 622 const void *data); 623 int (*set_loopback)(struct phy_device *dev, bool enable); 624 }; 625 #define to_phy_driver(d) container_of(to_mdio_common_driver(d), \ 626 struct phy_driver, mdiodrv) 627 628 #define PHY_ANY_ID "MATCH ANY PHY" 629 #define PHY_ANY_UID 0xffffffff 630 631 #define PHY_ID_MATCH_EXACT(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 0) 632 #define PHY_ID_MATCH_MODEL(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 4) 633 #define PHY_ID_MATCH_VENDOR(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 10) 634 635 /* A Structure for boards to register fixups with the PHY Lib */ 636 struct phy_fixup { 637 struct list_head list; 638 char bus_id[MII_BUS_ID_SIZE + 3]; 639 u32 phy_uid; 640 u32 phy_uid_mask; 641 int (*run)(struct phy_device *phydev); 642 }; 643 644 const char *phy_speed_to_str(int speed); 645 const char *phy_duplex_to_str(unsigned int duplex); 646 647 /* A structure for mapping a particular speed and duplex 648 * combination to a particular SUPPORTED and ADVERTISED value 649 */ 650 struct phy_setting { 651 u32 speed; 652 u8 duplex; 653 u8 bit; 654 }; 655 656 const struct phy_setting * 657 phy_lookup_setting(int speed, int duplex, const unsigned long *mask, 658 bool exact); 659 size_t phy_speeds(unsigned int *speeds, size_t size, 660 unsigned long *mask); 661 void of_set_phy_supported(struct phy_device *phydev); 662 void of_set_phy_eee_broken(struct phy_device *phydev); 663 664 /** 665 * phy_is_started - Convenience function to check whether PHY is started 666 * @phydev: The phy_device struct 667 */ 668 static inline bool phy_is_started(struct phy_device *phydev) 669 { 670 return phydev->state >= PHY_UP; 671 } 672 673 void phy_resolve_aneg_linkmode(struct phy_device *phydev); 674 675 /** 676 * phy_read - Convenience function for reading a given PHY register 677 * @phydev: the phy_device struct 678 * @regnum: register number to read 679 * 680 * NOTE: MUST NOT be called from interrupt context, 681 * because the bus read/write functions may wait for an interrupt 682 * to conclude the operation. 683 */ 684 static inline int phy_read(struct phy_device *phydev, u32 regnum) 685 { 686 return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum); 687 } 688 689 /** 690 * __phy_read - convenience function for reading a given PHY register 691 * @phydev: the phy_device struct 692 * @regnum: register number to read 693 * 694 * The caller must have taken the MDIO bus lock. 695 */ 696 static inline int __phy_read(struct phy_device *phydev, u32 regnum) 697 { 698 return __mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum); 699 } 700 701 /** 702 * phy_write - Convenience function for writing a given PHY register 703 * @phydev: the phy_device struct 704 * @regnum: register number to write 705 * @val: value to write to @regnum 706 * 707 * NOTE: MUST NOT be called from interrupt context, 708 * because the bus read/write functions may wait for an interrupt 709 * to conclude the operation. 710 */ 711 static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val) 712 { 713 return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val); 714 } 715 716 /** 717 * __phy_write - Convenience function for writing a given PHY register 718 * @phydev: the phy_device struct 719 * @regnum: register number to write 720 * @val: value to write to @regnum 721 * 722 * The caller must have taken the MDIO bus lock. 723 */ 724 static inline int __phy_write(struct phy_device *phydev, u32 regnum, u16 val) 725 { 726 return __mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, 727 val); 728 } 729 730 /** 731 * phy_read_mmd - Convenience function for reading a register 732 * from an MMD on a given PHY. 733 * @phydev: The phy_device struct 734 * @devad: The MMD to read from 735 * @regnum: The register on the MMD to read 736 * 737 * Same rules as for phy_read(); 738 */ 739 int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); 740 741 /** 742 * __phy_read_mmd - Convenience function for reading a register 743 * from 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 * 748 * Same rules as for __phy_read(); 749 */ 750 int __phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); 751 752 /** 753 * phy_write_mmd - Convenience function for writing a register 754 * on an MMD on a given PHY. 755 * @phydev: The phy_device struct 756 * @devad: The MMD to write to 757 * @regnum: The register on the MMD to read 758 * @val: value to write to @regnum 759 * 760 * Same rules as for phy_write(); 761 */ 762 int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); 763 764 /** 765 * __phy_write_mmd - Convenience function for writing a register 766 * on an MMD on a given PHY. 767 * @phydev: The phy_device struct 768 * @devad: The MMD to write to 769 * @regnum: The register on the MMD to read 770 * @val: value to write to @regnum 771 * 772 * Same rules as for __phy_write(); 773 */ 774 int __phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); 775 776 int __phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, 777 u16 set); 778 int phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, 779 u16 set); 780 int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); 781 int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); 782 783 int __phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, 784 u16 mask, u16 set); 785 int phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, 786 u16 mask, u16 set); 787 int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, 788 u16 mask, u16 set); 789 int phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, 790 u16 mask, u16 set); 791 792 /** 793 * __phy_set_bits - Convenience function for setting bits in a PHY register 794 * @phydev: the phy_device struct 795 * @regnum: register number to write 796 * @val: bits to set 797 * 798 * The caller must have taken the MDIO bus lock. 799 */ 800 static inline int __phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val) 801 { 802 return __phy_modify(phydev, regnum, 0, val); 803 } 804 805 /** 806 * __phy_clear_bits - Convenience function for clearing bits in a PHY register 807 * @phydev: the phy_device struct 808 * @regnum: register number to write 809 * @val: bits to clear 810 * 811 * The caller must have taken the MDIO bus lock. 812 */ 813 static inline int __phy_clear_bits(struct phy_device *phydev, u32 regnum, 814 u16 val) 815 { 816 return __phy_modify(phydev, regnum, val, 0); 817 } 818 819 /** 820 * phy_set_bits - Convenience function for setting bits in a PHY register 821 * @phydev: the phy_device struct 822 * @regnum: register number to write 823 * @val: bits to set 824 */ 825 static inline int phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val) 826 { 827 return phy_modify(phydev, regnum, 0, val); 828 } 829 830 /** 831 * phy_clear_bits - Convenience function for clearing bits in a PHY register 832 * @phydev: the phy_device struct 833 * @regnum: register number to write 834 * @val: bits to clear 835 */ 836 static inline int phy_clear_bits(struct phy_device *phydev, u32 regnum, u16 val) 837 { 838 return phy_modify(phydev, regnum, val, 0); 839 } 840 841 /** 842 * __phy_set_bits_mmd - Convenience function for setting bits in a register 843 * on MMD 844 * @phydev: the phy_device struct 845 * @devad: the MMD containing register to modify 846 * @regnum: register number to modify 847 * @val: bits to set 848 * 849 * The caller must have taken the MDIO bus lock. 850 */ 851 static inline int __phy_set_bits_mmd(struct phy_device *phydev, int devad, 852 u32 regnum, u16 val) 853 { 854 return __phy_modify_mmd(phydev, devad, regnum, 0, val); 855 } 856 857 /** 858 * __phy_clear_bits_mmd - Convenience function for clearing bits in a register 859 * on MMD 860 * @phydev: the phy_device struct 861 * @devad: the MMD containing register to modify 862 * @regnum: register number to modify 863 * @val: bits to clear 864 * 865 * The caller must have taken the MDIO bus lock. 866 */ 867 static inline int __phy_clear_bits_mmd(struct phy_device *phydev, int devad, 868 u32 regnum, u16 val) 869 { 870 return __phy_modify_mmd(phydev, devad, regnum, val, 0); 871 } 872 873 /** 874 * phy_set_bits_mmd - Convenience function for setting bits in a register 875 * on MMD 876 * @phydev: the phy_device struct 877 * @devad: the MMD containing register to modify 878 * @regnum: register number to modify 879 * @val: bits to set 880 */ 881 static inline int phy_set_bits_mmd(struct phy_device *phydev, int devad, 882 u32 regnum, u16 val) 883 { 884 return phy_modify_mmd(phydev, devad, regnum, 0, val); 885 } 886 887 /** 888 * phy_clear_bits_mmd - Convenience function for clearing bits in a register 889 * on MMD 890 * @phydev: the phy_device struct 891 * @devad: the MMD containing register to modify 892 * @regnum: register number to modify 893 * @val: bits to clear 894 */ 895 static inline int phy_clear_bits_mmd(struct phy_device *phydev, int devad, 896 u32 regnum, u16 val) 897 { 898 return phy_modify_mmd(phydev, devad, regnum, val, 0); 899 } 900 901 /** 902 * phy_interrupt_is_valid - Convenience function for testing a given PHY irq 903 * @phydev: the phy_device struct 904 * 905 * NOTE: must be kept in sync with addition/removal of PHY_POLL and 906 * PHY_IGNORE_INTERRUPT 907 */ 908 static inline bool phy_interrupt_is_valid(struct phy_device *phydev) 909 { 910 return phydev->irq != PHY_POLL && phydev->irq != PHY_IGNORE_INTERRUPT; 911 } 912 913 /** 914 * phy_polling_mode - Convenience function for testing whether polling is 915 * used to detect PHY status changes 916 * @phydev: the phy_device struct 917 */ 918 static inline bool phy_polling_mode(struct phy_device *phydev) 919 { 920 return phydev->irq == PHY_POLL; 921 } 922 923 /** 924 * phy_is_internal - Convenience function for testing if a PHY is internal 925 * @phydev: the phy_device struct 926 */ 927 static inline bool phy_is_internal(struct phy_device *phydev) 928 { 929 return phydev->is_internal; 930 } 931 932 /** 933 * phy_interface_mode_is_rgmii - Convenience function for testing if a 934 * PHY interface mode is RGMII (all variants) 935 * @mode: the phy_interface_t enum 936 */ 937 static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode) 938 { 939 return mode >= PHY_INTERFACE_MODE_RGMII && 940 mode <= PHY_INTERFACE_MODE_RGMII_TXID; 941 }; 942 943 /** 944 * phy_interface_mode_is_8023z() - does the phy interface mode use 802.3z 945 * negotiation 946 * @mode: one of &enum phy_interface_t 947 * 948 * Returns true if the phy interface mode uses the 16-bit negotiation 949 * word as defined in 802.3z. (See 802.3-2015 37.2.1 Config_Reg encoding) 950 */ 951 static inline bool phy_interface_mode_is_8023z(phy_interface_t mode) 952 { 953 return mode == PHY_INTERFACE_MODE_1000BASEX || 954 mode == PHY_INTERFACE_MODE_2500BASEX; 955 } 956 957 /** 958 * phy_interface_is_rgmii - Convenience function for testing if a PHY interface 959 * is RGMII (all variants) 960 * @phydev: the phy_device struct 961 */ 962 static inline bool phy_interface_is_rgmii(struct phy_device *phydev) 963 { 964 return phy_interface_mode_is_rgmii(phydev->interface); 965 }; 966 967 /* 968 * phy_is_pseudo_fixed_link - Convenience function for testing if this 969 * PHY is the CPU port facing side of an Ethernet switch, or similar. 970 * @phydev: the phy_device struct 971 */ 972 static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev) 973 { 974 return phydev->is_pseudo_fixed_link; 975 } 976 977 int phy_save_page(struct phy_device *phydev); 978 int phy_select_page(struct phy_device *phydev, int page); 979 int phy_restore_page(struct phy_device *phydev, int oldpage, int ret); 980 int phy_read_paged(struct phy_device *phydev, int page, u32 regnum); 981 int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val); 982 int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum, 983 u16 mask, u16 set); 984 985 struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id, 986 bool is_c45, 987 struct phy_c45_device_ids *c45_ids); 988 #if IS_ENABLED(CONFIG_PHYLIB) 989 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45); 990 int phy_device_register(struct phy_device *phy); 991 void phy_device_free(struct phy_device *phydev); 992 #else 993 static inline 994 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) 995 { 996 return NULL; 997 } 998 999 static inline int phy_device_register(struct phy_device *phy) 1000 { 1001 return 0; 1002 } 1003 1004 static inline void phy_device_free(struct phy_device *phydev) { } 1005 #endif /* CONFIG_PHYLIB */ 1006 void phy_device_remove(struct phy_device *phydev); 1007 int phy_init_hw(struct phy_device *phydev); 1008 int phy_suspend(struct phy_device *phydev); 1009 int phy_resume(struct phy_device *phydev); 1010 int __phy_resume(struct phy_device *phydev); 1011 int phy_loopback(struct phy_device *phydev, bool enable); 1012 struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, 1013 phy_interface_t interface); 1014 struct phy_device *phy_find_first(struct mii_bus *bus); 1015 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, 1016 u32 flags, phy_interface_t interface); 1017 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, 1018 void (*handler)(struct net_device *), 1019 phy_interface_t interface); 1020 struct phy_device *phy_connect(struct net_device *dev, const char *bus_id, 1021 void (*handler)(struct net_device *), 1022 phy_interface_t interface); 1023 void phy_disconnect(struct phy_device *phydev); 1024 void phy_detach(struct phy_device *phydev); 1025 void phy_start(struct phy_device *phydev); 1026 void phy_stop(struct phy_device *phydev); 1027 int phy_start_aneg(struct phy_device *phydev); 1028 int phy_aneg_done(struct phy_device *phydev); 1029 int phy_speed_down(struct phy_device *phydev, bool sync); 1030 int phy_speed_up(struct phy_device *phydev); 1031 1032 int phy_restart_aneg(struct phy_device *phydev); 1033 int phy_reset_after_clk_enable(struct phy_device *phydev); 1034 1035 static inline void phy_device_reset(struct phy_device *phydev, int value) 1036 { 1037 mdio_device_reset(&phydev->mdio, value); 1038 } 1039 1040 #define phydev_err(_phydev, format, args...) \ 1041 dev_err(&_phydev->mdio.dev, format, ##args) 1042 1043 #define phydev_info(_phydev, format, args...) \ 1044 dev_info(&_phydev->mdio.dev, format, ##args) 1045 1046 #define phydev_warn(_phydev, format, args...) \ 1047 dev_warn(&_phydev->mdio.dev, format, ##args) 1048 1049 #define phydev_dbg(_phydev, format, args...) \ 1050 dev_dbg(&_phydev->mdio.dev, format, ##args) 1051 1052 static inline const char *phydev_name(const struct phy_device *phydev) 1053 { 1054 return dev_name(&phydev->mdio.dev); 1055 } 1056 1057 void phy_attached_print(struct phy_device *phydev, const char *fmt, ...) 1058 __printf(2, 3); 1059 void phy_attached_info(struct phy_device *phydev); 1060 1061 /* Clause 22 PHY */ 1062 int genphy_config_init(struct phy_device *phydev); 1063 int genphy_read_abilities(struct phy_device *phydev); 1064 int genphy_setup_forced(struct phy_device *phydev); 1065 int genphy_restart_aneg(struct phy_device *phydev); 1066 int genphy_config_eee_advert(struct phy_device *phydev); 1067 int genphy_config_aneg(struct phy_device *phydev); 1068 int genphy_aneg_done(struct phy_device *phydev); 1069 int genphy_update_link(struct phy_device *phydev); 1070 int genphy_read_status(struct phy_device *phydev); 1071 int genphy_suspend(struct phy_device *phydev); 1072 int genphy_resume(struct phy_device *phydev); 1073 int genphy_loopback(struct phy_device *phydev, bool enable); 1074 int genphy_soft_reset(struct phy_device *phydev); 1075 static inline int genphy_no_soft_reset(struct phy_device *phydev) 1076 { 1077 return 0; 1078 } 1079 static inline int genphy_no_ack_interrupt(struct phy_device *phydev) 1080 { 1081 return 0; 1082 } 1083 static inline int genphy_no_config_intr(struct phy_device *phydev) 1084 { 1085 return 0; 1086 } 1087 int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad, 1088 u16 regnum); 1089 int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum, 1090 u16 regnum, u16 val); 1091 1092 /* Clause 45 PHY */ 1093 int genphy_c45_restart_aneg(struct phy_device *phydev); 1094 int genphy_c45_check_and_restart_aneg(struct phy_device *phydev, bool restart); 1095 int genphy_c45_aneg_done(struct phy_device *phydev); 1096 int genphy_c45_read_link(struct phy_device *phydev); 1097 int genphy_c45_read_lpa(struct phy_device *phydev); 1098 int genphy_c45_read_pma(struct phy_device *phydev); 1099 int genphy_c45_pma_setup_forced(struct phy_device *phydev); 1100 int genphy_c45_an_config_aneg(struct phy_device *phydev); 1101 int genphy_c45_an_disable_aneg(struct phy_device *phydev); 1102 int genphy_c45_read_mdix(struct phy_device *phydev); 1103 int genphy_c45_pma_read_abilities(struct phy_device *phydev); 1104 int genphy_c45_read_status(struct phy_device *phydev); 1105 1106 /* The gen10g_* functions are the old Clause 45 stub */ 1107 int gen10g_config_aneg(struct phy_device *phydev); 1108 1109 static inline int phy_read_status(struct phy_device *phydev) 1110 { 1111 if (!phydev->drv) 1112 return -EIO; 1113 1114 if (phydev->drv->read_status) 1115 return phydev->drv->read_status(phydev); 1116 else 1117 return genphy_read_status(phydev); 1118 } 1119 1120 void phy_driver_unregister(struct phy_driver *drv); 1121 void phy_drivers_unregister(struct phy_driver *drv, int n); 1122 int phy_driver_register(struct phy_driver *new_driver, struct module *owner); 1123 int phy_drivers_register(struct phy_driver *new_driver, int n, 1124 struct module *owner); 1125 void phy_state_machine(struct work_struct *work); 1126 void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies); 1127 void phy_mac_interrupt(struct phy_device *phydev); 1128 void phy_start_machine(struct phy_device *phydev); 1129 void phy_stop_machine(struct phy_device *phydev); 1130 int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd); 1131 void phy_ethtool_ksettings_get(struct phy_device *phydev, 1132 struct ethtool_link_ksettings *cmd); 1133 int phy_ethtool_ksettings_set(struct phy_device *phydev, 1134 const struct ethtool_link_ksettings *cmd); 1135 int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd); 1136 void phy_request_interrupt(struct phy_device *phydev); 1137 void phy_free_interrupt(struct phy_device *phydev); 1138 void phy_print_status(struct phy_device *phydev); 1139 int phy_set_max_speed(struct phy_device *phydev, u32 max_speed); 1140 void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode); 1141 void phy_advertise_supported(struct phy_device *phydev); 1142 void phy_support_sym_pause(struct phy_device *phydev); 1143 void phy_support_asym_pause(struct phy_device *phydev); 1144 void phy_set_sym_pause(struct phy_device *phydev, bool rx, bool tx, 1145 bool autoneg); 1146 void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx); 1147 bool phy_validate_pause(struct phy_device *phydev, 1148 struct ethtool_pauseparam *pp); 1149 1150 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask, 1151 int (*run)(struct phy_device *)); 1152 int phy_register_fixup_for_id(const char *bus_id, 1153 int (*run)(struct phy_device *)); 1154 int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask, 1155 int (*run)(struct phy_device *)); 1156 1157 int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask); 1158 int phy_unregister_fixup_for_id(const char *bus_id); 1159 int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask); 1160 1161 int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable); 1162 int phy_get_eee_err(struct phy_device *phydev); 1163 int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data); 1164 int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data); 1165 int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol); 1166 void phy_ethtool_get_wol(struct phy_device *phydev, 1167 struct ethtool_wolinfo *wol); 1168 int phy_ethtool_get_link_ksettings(struct net_device *ndev, 1169 struct ethtool_link_ksettings *cmd); 1170 int phy_ethtool_set_link_ksettings(struct net_device *ndev, 1171 const struct ethtool_link_ksettings *cmd); 1172 int phy_ethtool_nway_reset(struct net_device *ndev); 1173 1174 #if IS_ENABLED(CONFIG_PHYLIB) 1175 int __init mdio_bus_init(void); 1176 void mdio_bus_exit(void); 1177 #endif 1178 1179 /* Inline function for use within net/core/ethtool.c (built-in) */ 1180 static inline int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data) 1181 { 1182 if (!phydev->drv) 1183 return -EIO; 1184 1185 mutex_lock(&phydev->lock); 1186 phydev->drv->get_strings(phydev, data); 1187 mutex_unlock(&phydev->lock); 1188 1189 return 0; 1190 } 1191 1192 static inline int phy_ethtool_get_sset_count(struct phy_device *phydev) 1193 { 1194 int ret; 1195 1196 if (!phydev->drv) 1197 return -EIO; 1198 1199 if (phydev->drv->get_sset_count && 1200 phydev->drv->get_strings && 1201 phydev->drv->get_stats) { 1202 mutex_lock(&phydev->lock); 1203 ret = phydev->drv->get_sset_count(phydev); 1204 mutex_unlock(&phydev->lock); 1205 1206 return ret; 1207 } 1208 1209 return -EOPNOTSUPP; 1210 } 1211 1212 static inline int phy_ethtool_get_stats(struct phy_device *phydev, 1213 struct ethtool_stats *stats, u64 *data) 1214 { 1215 if (!phydev->drv) 1216 return -EIO; 1217 1218 mutex_lock(&phydev->lock); 1219 phydev->drv->get_stats(phydev, stats, data); 1220 mutex_unlock(&phydev->lock); 1221 1222 return 0; 1223 } 1224 1225 extern struct bus_type mdio_bus_type; 1226 1227 struct mdio_board_info { 1228 const char *bus_id; 1229 char modalias[MDIO_NAME_SIZE]; 1230 int mdio_addr; 1231 const void *platform_data; 1232 }; 1233 1234 #if IS_ENABLED(CONFIG_MDIO_DEVICE) 1235 int mdiobus_register_board_info(const struct mdio_board_info *info, 1236 unsigned int n); 1237 #else 1238 static inline int mdiobus_register_board_info(const struct mdio_board_info *i, 1239 unsigned int n) 1240 { 1241 return 0; 1242 } 1243 #endif 1244 1245 1246 /** 1247 * module_phy_driver() - Helper macro for registering PHY drivers 1248 * @__phy_drivers: array of PHY drivers to register 1249 * 1250 * Helper macro for PHY drivers which do not do anything special in module 1251 * init/exit. Each module may only use this macro once, and calling it 1252 * replaces module_init() and module_exit(). 1253 */ 1254 #define phy_module_driver(__phy_drivers, __count) \ 1255 static int __init phy_module_init(void) \ 1256 { \ 1257 return phy_drivers_register(__phy_drivers, __count, THIS_MODULE); \ 1258 } \ 1259 module_init(phy_module_init); \ 1260 static void __exit phy_module_exit(void) \ 1261 { \ 1262 phy_drivers_unregister(__phy_drivers, __count); \ 1263 } \ 1264 module_exit(phy_module_exit) 1265 1266 #define module_phy_driver(__phy_drivers) \ 1267 phy_module_driver(__phy_drivers, ARRAY_SIZE(__phy_drivers)) 1268 1269 bool phy_driver_is_genphy(struct phy_device *phydev); 1270 bool phy_driver_is_genphy_10g(struct phy_device *phydev); 1271 1272 #endif /* __PHY_H */ 1273