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/netlink.h> 19 #include <linux/mdio.h> 20 #include <linux/mii.h> 21 #include <linux/mii_timestamper.h> 22 #include <linux/module.h> 23 #include <linux/timer.h> 24 #include <linux/workqueue.h> 25 #include <linux/mod_devicetable.h> 26 #include <linux/u64_stats_sync.h> 27 #include <linux/irqreturn.h> 28 #include <linux/iopoll.h> 29 #include <linux/refcount.h> 30 31 #include <linux/atomic.h> 32 33 #define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \ 34 SUPPORTED_TP | \ 35 SUPPORTED_MII) 36 37 #define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \ 38 SUPPORTED_10baseT_Full) 39 40 #define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \ 41 SUPPORTED_100baseT_Full) 42 43 #define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \ 44 SUPPORTED_1000baseT_Full) 45 46 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_features) __ro_after_init; 47 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1_features) __ro_after_init; 48 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features) __ro_after_init; 49 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_fibre_features) __ro_after_init; 50 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_all_ports_features) __ro_after_init; 51 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_features) __ro_after_init; 52 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_fec_features) __ro_after_init; 53 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_full_features) __ro_after_init; 54 55 #define PHY_BASIC_FEATURES ((unsigned long *)&phy_basic_features) 56 #define PHY_BASIC_T1_FEATURES ((unsigned long *)&phy_basic_t1_features) 57 #define PHY_GBIT_FEATURES ((unsigned long *)&phy_gbit_features) 58 #define PHY_GBIT_FIBRE_FEATURES ((unsigned long *)&phy_gbit_fibre_features) 59 #define PHY_GBIT_ALL_PORTS_FEATURES ((unsigned long *)&phy_gbit_all_ports_features) 60 #define PHY_10GBIT_FEATURES ((unsigned long *)&phy_10gbit_features) 61 #define PHY_10GBIT_FEC_FEATURES ((unsigned long *)&phy_10gbit_fec_features) 62 #define PHY_10GBIT_FULL_FEATURES ((unsigned long *)&phy_10gbit_full_features) 63 64 extern const int phy_basic_ports_array[3]; 65 extern const int phy_fibre_port_array[1]; 66 extern const int phy_all_ports_features_array[7]; 67 extern const int phy_10_100_features_array[4]; 68 extern const int phy_basic_t1_features_array[2]; 69 extern const int phy_gbit_features_array[2]; 70 extern const int phy_10gbit_features_array[1]; 71 72 /* 73 * Set phydev->irq to PHY_POLL if interrupts are not supported, 74 * or not desired for this PHY. Set to PHY_MAC_INTERRUPT if 75 * the attached MAC driver handles the interrupt 76 */ 77 #define PHY_POLL -1 78 #define PHY_MAC_INTERRUPT -2 79 80 #define PHY_IS_INTERNAL 0x00000001 81 #define PHY_RST_AFTER_CLK_EN 0x00000002 82 #define PHY_POLL_CABLE_TEST 0x00000004 83 #define MDIO_DEVICE_IS_PHY 0x80000000 84 85 /** 86 * enum phy_interface_t - Interface Mode definitions 87 * 88 * @PHY_INTERFACE_MODE_NA: Not Applicable - don't touch 89 * @PHY_INTERFACE_MODE_INTERNAL: No interface, MAC and PHY combined 90 * @PHY_INTERFACE_MODE_MII: Median-independent interface 91 * @PHY_INTERFACE_MODE_GMII: Gigabit median-independent interface 92 * @PHY_INTERFACE_MODE_SGMII: Serial gigabit media-independent interface 93 * @PHY_INTERFACE_MODE_TBI: Ten Bit Interface 94 * @PHY_INTERFACE_MODE_REVMII: Reverse Media Independent Interface 95 * @PHY_INTERFACE_MODE_RMII: Reduced Media Independent Interface 96 * @PHY_INTERFACE_MODE_RGMII: Reduced gigabit media-independent interface 97 * @PHY_INTERFACE_MODE_RGMII_ID: RGMII with Internal RX+TX delay 98 * @PHY_INTERFACE_MODE_RGMII_RXID: RGMII with Internal RX delay 99 * @PHY_INTERFACE_MODE_RGMII_TXID: RGMII with Internal RX delay 100 * @PHY_INTERFACE_MODE_RTBI: Reduced TBI 101 * @PHY_INTERFACE_MODE_SMII: ??? MII 102 * @PHY_INTERFACE_MODE_XGMII: 10 gigabit media-independent interface 103 * @PHY_INTERFACE_MODE_XLGMII:40 gigabit media-independent interface 104 * @PHY_INTERFACE_MODE_MOCA: Multimedia over Coax 105 * @PHY_INTERFACE_MODE_QSGMII: Quad SGMII 106 * @PHY_INTERFACE_MODE_TRGMII: Turbo RGMII 107 * @PHY_INTERFACE_MODE_100BASEX: 100 BaseX 108 * @PHY_INTERFACE_MODE_1000BASEX: 1000 BaseX 109 * @PHY_INTERFACE_MODE_2500BASEX: 2500 BaseX 110 * @PHY_INTERFACE_MODE_5GBASER: 5G BaseR 111 * @PHY_INTERFACE_MODE_RXAUI: Reduced XAUI 112 * @PHY_INTERFACE_MODE_XAUI: 10 Gigabit Attachment Unit Interface 113 * @PHY_INTERFACE_MODE_10GBASER: 10G BaseR 114 * @PHY_INTERFACE_MODE_USXGMII: Universal Serial 10GE MII 115 * @PHY_INTERFACE_MODE_10GKR: 10GBASE-KR - with Clause 73 AN 116 * @PHY_INTERFACE_MODE_MAX: Book keeping 117 * 118 * Describes the interface between the MAC and PHY. 119 */ 120 typedef enum { 121 PHY_INTERFACE_MODE_NA, 122 PHY_INTERFACE_MODE_INTERNAL, 123 PHY_INTERFACE_MODE_MII, 124 PHY_INTERFACE_MODE_GMII, 125 PHY_INTERFACE_MODE_SGMII, 126 PHY_INTERFACE_MODE_TBI, 127 PHY_INTERFACE_MODE_REVMII, 128 PHY_INTERFACE_MODE_RMII, 129 PHY_INTERFACE_MODE_RGMII, 130 PHY_INTERFACE_MODE_RGMII_ID, 131 PHY_INTERFACE_MODE_RGMII_RXID, 132 PHY_INTERFACE_MODE_RGMII_TXID, 133 PHY_INTERFACE_MODE_RTBI, 134 PHY_INTERFACE_MODE_SMII, 135 PHY_INTERFACE_MODE_XGMII, 136 PHY_INTERFACE_MODE_XLGMII, 137 PHY_INTERFACE_MODE_MOCA, 138 PHY_INTERFACE_MODE_QSGMII, 139 PHY_INTERFACE_MODE_TRGMII, 140 PHY_INTERFACE_MODE_100BASEX, 141 PHY_INTERFACE_MODE_1000BASEX, 142 PHY_INTERFACE_MODE_2500BASEX, 143 PHY_INTERFACE_MODE_5GBASER, 144 PHY_INTERFACE_MODE_RXAUI, 145 PHY_INTERFACE_MODE_XAUI, 146 /* 10GBASE-R, XFI, SFI - single lane 10G Serdes */ 147 PHY_INTERFACE_MODE_10GBASER, 148 PHY_INTERFACE_MODE_USXGMII, 149 /* 10GBASE-KR - with Clause 73 AN */ 150 PHY_INTERFACE_MODE_10GKR, 151 PHY_INTERFACE_MODE_MAX, 152 } phy_interface_t; 153 154 /* 155 * phy_supported_speeds - return all speeds currently supported by a PHY device 156 */ 157 unsigned int phy_supported_speeds(struct phy_device *phy, 158 unsigned int *speeds, 159 unsigned int size); 160 161 /** 162 * phy_modes - map phy_interface_t enum to device tree binding of phy-mode 163 * @interface: enum phy_interface_t value 164 * 165 * Description: maps enum &phy_interface_t defined in this file 166 * into the device tree binding of 'phy-mode', so that Ethernet 167 * device driver can get PHY interface from device tree. 168 */ 169 static inline const char *phy_modes(phy_interface_t interface) 170 { 171 switch (interface) { 172 case PHY_INTERFACE_MODE_NA: 173 return ""; 174 case PHY_INTERFACE_MODE_INTERNAL: 175 return "internal"; 176 case PHY_INTERFACE_MODE_MII: 177 return "mii"; 178 case PHY_INTERFACE_MODE_GMII: 179 return "gmii"; 180 case PHY_INTERFACE_MODE_SGMII: 181 return "sgmii"; 182 case PHY_INTERFACE_MODE_TBI: 183 return "tbi"; 184 case PHY_INTERFACE_MODE_REVMII: 185 return "rev-mii"; 186 case PHY_INTERFACE_MODE_RMII: 187 return "rmii"; 188 case PHY_INTERFACE_MODE_RGMII: 189 return "rgmii"; 190 case PHY_INTERFACE_MODE_RGMII_ID: 191 return "rgmii-id"; 192 case PHY_INTERFACE_MODE_RGMII_RXID: 193 return "rgmii-rxid"; 194 case PHY_INTERFACE_MODE_RGMII_TXID: 195 return "rgmii-txid"; 196 case PHY_INTERFACE_MODE_RTBI: 197 return "rtbi"; 198 case PHY_INTERFACE_MODE_SMII: 199 return "smii"; 200 case PHY_INTERFACE_MODE_XGMII: 201 return "xgmii"; 202 case PHY_INTERFACE_MODE_XLGMII: 203 return "xlgmii"; 204 case PHY_INTERFACE_MODE_MOCA: 205 return "moca"; 206 case PHY_INTERFACE_MODE_QSGMII: 207 return "qsgmii"; 208 case PHY_INTERFACE_MODE_TRGMII: 209 return "trgmii"; 210 case PHY_INTERFACE_MODE_1000BASEX: 211 return "1000base-x"; 212 case PHY_INTERFACE_MODE_2500BASEX: 213 return "2500base-x"; 214 case PHY_INTERFACE_MODE_5GBASER: 215 return "5gbase-r"; 216 case PHY_INTERFACE_MODE_RXAUI: 217 return "rxaui"; 218 case PHY_INTERFACE_MODE_XAUI: 219 return "xaui"; 220 case PHY_INTERFACE_MODE_10GBASER: 221 return "10gbase-r"; 222 case PHY_INTERFACE_MODE_USXGMII: 223 return "usxgmii"; 224 case PHY_INTERFACE_MODE_10GKR: 225 return "10gbase-kr"; 226 case PHY_INTERFACE_MODE_100BASEX: 227 return "100base-x"; 228 default: 229 return "unknown"; 230 } 231 } 232 233 234 #define PHY_INIT_TIMEOUT 100000 235 #define PHY_FORCE_TIMEOUT 10 236 237 #define PHY_MAX_ADDR 32 238 239 /* Used when trying to connect to a specific phy (mii bus id:phy device id) */ 240 #define PHY_ID_FMT "%s:%02x" 241 242 #define MII_BUS_ID_SIZE 61 243 244 struct device; 245 struct phylink; 246 struct sfp_bus; 247 struct sfp_upstream_ops; 248 struct sk_buff; 249 250 /** 251 * struct mdio_bus_stats - Statistics counters for MDIO busses 252 * @transfers: Total number of transfers, i.e. @writes + @reads 253 * @errors: Number of MDIO transfers that returned an error 254 * @writes: Number of write transfers 255 * @reads: Number of read transfers 256 * @syncp: Synchronisation for incrementing statistics 257 */ 258 struct mdio_bus_stats { 259 u64_stats_t transfers; 260 u64_stats_t errors; 261 u64_stats_t writes; 262 u64_stats_t reads; 263 /* Must be last, add new statistics above */ 264 struct u64_stats_sync syncp; 265 }; 266 267 /** 268 * struct phy_package_shared - Shared information in PHY packages 269 * @addr: Common PHY address used to combine PHYs in one package 270 * @refcnt: Number of PHYs connected to this shared data 271 * @flags: Initialization of PHY package 272 * @priv_size: Size of the shared private data @priv 273 * @priv: Driver private data shared across a PHY package 274 * 275 * Represents a shared structure between different phydev's in the same 276 * package, for example a quad PHY. See phy_package_join() and 277 * phy_package_leave(). 278 */ 279 struct phy_package_shared { 280 int addr; 281 refcount_t refcnt; 282 unsigned long flags; 283 size_t priv_size; 284 285 /* private data pointer */ 286 /* note that this pointer is shared between different phydevs and 287 * the user has to take care of appropriate locking. It is allocated 288 * and freed automatically by phy_package_join() and 289 * phy_package_leave(). 290 */ 291 void *priv; 292 }; 293 294 /* used as bit number in atomic bitops */ 295 #define PHY_SHARED_F_INIT_DONE 0 296 #define PHY_SHARED_F_PROBE_DONE 1 297 298 /** 299 * struct mii_bus - Represents an MDIO bus 300 * 301 * @owner: Who owns this device 302 * @name: User friendly name for this MDIO device, or driver name 303 * @id: Unique identifier for this bus, typical from bus hierarchy 304 * @priv: Driver private data 305 * 306 * The Bus class for PHYs. Devices which provide access to 307 * PHYs should register using this structure 308 */ 309 struct mii_bus { 310 struct module *owner; 311 const char *name; 312 char id[MII_BUS_ID_SIZE]; 313 void *priv; 314 /** @read: Perform a read transfer on the bus */ 315 int (*read)(struct mii_bus *bus, int addr, int regnum); 316 /** @write: Perform a write transfer on the bus */ 317 int (*write)(struct mii_bus *bus, int addr, int regnum, u16 val); 318 /** @reset: Perform a reset of the bus */ 319 int (*reset)(struct mii_bus *bus); 320 321 /** @stats: Statistic counters per device on the bus */ 322 struct mdio_bus_stats stats[PHY_MAX_ADDR]; 323 324 /** 325 * @mdio_lock: A lock to ensure that only one thing can read/write 326 * the MDIO bus at a time 327 */ 328 struct mutex mdio_lock; 329 330 /** @parent: Parent device of this bus */ 331 struct device *parent; 332 /** @state: State of bus structure */ 333 enum { 334 MDIOBUS_ALLOCATED = 1, 335 MDIOBUS_REGISTERED, 336 MDIOBUS_UNREGISTERED, 337 MDIOBUS_RELEASED, 338 } state; 339 340 /** @dev: Kernel device representation */ 341 struct device dev; 342 343 /** @mdio_map: list of all MDIO devices on bus */ 344 struct mdio_device *mdio_map[PHY_MAX_ADDR]; 345 346 /** @phy_mask: PHY addresses to be ignored when probing */ 347 u32 phy_mask; 348 349 /** @phy_ignore_ta_mask: PHY addresses to ignore the TA/read failure */ 350 u32 phy_ignore_ta_mask; 351 352 /** 353 * @irq: An array of interrupts, each PHY's interrupt at the index 354 * matching its address 355 */ 356 int irq[PHY_MAX_ADDR]; 357 358 /** @reset_delay_us: GPIO reset pulse width in microseconds */ 359 int reset_delay_us; 360 /** @reset_post_delay_us: GPIO reset deassert delay in microseconds */ 361 int reset_post_delay_us; 362 /** @reset_gpiod: Reset GPIO descriptor pointer */ 363 struct gpio_desc *reset_gpiod; 364 365 /** @probe_capabilities: bus capabilities, used for probing */ 366 enum { 367 MDIOBUS_NO_CAP = 0, 368 MDIOBUS_C22, 369 MDIOBUS_C45, 370 MDIOBUS_C22_C45, 371 } probe_capabilities; 372 373 /** @shared_lock: protect access to the shared element */ 374 struct mutex shared_lock; 375 376 /** @shared: shared state across different PHYs */ 377 struct phy_package_shared *shared[PHY_MAX_ADDR]; 378 }; 379 #define to_mii_bus(d) container_of(d, struct mii_bus, dev) 380 381 struct mii_bus *mdiobus_alloc_size(size_t size); 382 383 /** 384 * mdiobus_alloc - Allocate an MDIO bus structure 385 * 386 * The internal state of the MDIO bus will be set of MDIOBUS_ALLOCATED ready 387 * for the driver to register the bus. 388 */ 389 static inline struct mii_bus *mdiobus_alloc(void) 390 { 391 return mdiobus_alloc_size(0); 392 } 393 394 int __mdiobus_register(struct mii_bus *bus, struct module *owner); 395 int __devm_mdiobus_register(struct device *dev, struct mii_bus *bus, 396 struct module *owner); 397 #define mdiobus_register(bus) __mdiobus_register(bus, THIS_MODULE) 398 #define devm_mdiobus_register(dev, bus) \ 399 __devm_mdiobus_register(dev, bus, THIS_MODULE) 400 401 void mdiobus_unregister(struct mii_bus *bus); 402 void mdiobus_free(struct mii_bus *bus); 403 struct mii_bus *devm_mdiobus_alloc_size(struct device *dev, int sizeof_priv); 404 static inline struct mii_bus *devm_mdiobus_alloc(struct device *dev) 405 { 406 return devm_mdiobus_alloc_size(dev, 0); 407 } 408 409 struct mii_bus *mdio_find_bus(const char *mdio_name); 410 struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr); 411 412 #define PHY_INTERRUPT_DISABLED false 413 #define PHY_INTERRUPT_ENABLED true 414 415 /** 416 * enum phy_state - PHY state machine states: 417 * 418 * @PHY_DOWN: PHY device and driver are not ready for anything. probe 419 * should be called if and only if the PHY is in this state, 420 * given that the PHY device exists. 421 * - PHY driver probe function will set the state to @PHY_READY 422 * 423 * @PHY_READY: PHY is ready to send and receive packets, but the 424 * controller is not. By default, PHYs which do not implement 425 * probe will be set to this state by phy_probe(). 426 * - start will set the state to UP 427 * 428 * @PHY_UP: The PHY and attached device are ready to do work. 429 * Interrupts should be started here. 430 * - timer moves to @PHY_NOLINK or @PHY_RUNNING 431 * 432 * @PHY_NOLINK: PHY is up, but not currently plugged in. 433 * - irq or timer will set @PHY_RUNNING if link comes back 434 * - phy_stop moves to @PHY_HALTED 435 * 436 * @PHY_RUNNING: PHY is currently up, running, and possibly sending 437 * and/or receiving packets 438 * - irq or timer will set @PHY_NOLINK if link goes down 439 * - phy_stop moves to @PHY_HALTED 440 * 441 * @PHY_CABLETEST: PHY is performing a cable test. Packet reception/sending 442 * is not expected to work, carrier will be indicated as down. PHY will be 443 * poll once per second, or on interrupt for it current state. 444 * Once complete, move to UP to restart the PHY. 445 * - phy_stop aborts the running test and moves to @PHY_HALTED 446 * 447 * @PHY_HALTED: PHY is up, but no polling or interrupts are done. Or 448 * PHY is in an error state. 449 * - phy_start moves to @PHY_UP 450 */ 451 enum phy_state { 452 PHY_DOWN = 0, 453 PHY_READY, 454 PHY_HALTED, 455 PHY_UP, 456 PHY_RUNNING, 457 PHY_NOLINK, 458 PHY_CABLETEST, 459 }; 460 461 #define MDIO_MMD_NUM 32 462 463 /** 464 * struct phy_c45_device_ids - 802.3-c45 Device Identifiers 465 * @devices_in_package: IEEE 802.3 devices in package register value. 466 * @mmds_present: bit vector of MMDs present. 467 * @device_ids: The device identifer for each present device. 468 */ 469 struct phy_c45_device_ids { 470 u32 devices_in_package; 471 u32 mmds_present; 472 u32 device_ids[MDIO_MMD_NUM]; 473 }; 474 475 struct macsec_context; 476 struct macsec_ops; 477 478 /** 479 * struct phy_device - An instance of a PHY 480 * 481 * @mdio: MDIO bus this PHY is on 482 * @drv: Pointer to the driver for this PHY instance 483 * @phy_id: UID for this device found during discovery 484 * @c45_ids: 802.3-c45 Device Identifiers if is_c45. 485 * @is_c45: Set to true if this PHY uses clause 45 addressing. 486 * @is_internal: Set to true if this PHY is internal to a MAC. 487 * @is_pseudo_fixed_link: Set to true if this PHY is an Ethernet switch, etc. 488 * @is_gigabit_capable: Set to true if PHY supports 1000Mbps 489 * @has_fixups: Set to true if this PHY has fixups/quirks. 490 * @suspended: Set to true if this PHY has been suspended successfully. 491 * @suspended_by_mdio_bus: Set to true if this PHY was suspended by MDIO bus. 492 * @sysfs_links: Internal boolean tracking sysfs symbolic links setup/removal. 493 * @loopback_enabled: Set true if this PHY has been loopbacked successfully. 494 * @downshifted_rate: Set true if link speed has been downshifted. 495 * @is_on_sfp_module: Set true if PHY is located on an SFP module. 496 * @state: State of the PHY for management purposes 497 * @dev_flags: Device-specific flags used by the PHY driver. 498 * @irq: IRQ number of the PHY's interrupt (-1 if none) 499 * @phy_timer: The timer for handling the state machine 500 * @phylink: Pointer to phylink instance for this PHY 501 * @sfp_bus_attached: Flag indicating whether the SFP bus has been attached 502 * @sfp_bus: SFP bus attached to this PHY's fiber port 503 * @attached_dev: The attached enet driver's device instance ptr 504 * @adjust_link: Callback for the enet controller to respond to changes: in the 505 * link state. 506 * @phy_link_change: Callback for phylink for notification of link change 507 * @macsec_ops: MACsec offloading ops. 508 * 509 * @speed: Current link speed 510 * @duplex: Current duplex 511 * @port: Current port 512 * @pause: Current pause 513 * @asym_pause: Current asymmetric pause 514 * @supported: Combined MAC/PHY supported linkmodes 515 * @advertising: Currently advertised linkmodes 516 * @adv_old: Saved advertised while power saving for WoL 517 * @lp_advertising: Current link partner advertised linkmodes 518 * @eee_broken_modes: Energy efficient ethernet modes which should be prohibited 519 * @autoneg: Flag autoneg being used 520 * @link: Current link state 521 * @autoneg_complete: Flag auto negotiation of the link has completed 522 * @mdix: Current crossover 523 * @mdix_ctrl: User setting of crossover 524 * @interrupts: Flag interrupts have been enabled 525 * @interface: enum phy_interface_t value 526 * @skb: Netlink message for cable diagnostics 527 * @nest: Netlink nest used for cable diagnostics 528 * @ehdr: nNtlink header for cable diagnostics 529 * @phy_led_triggers: Array of LED triggers 530 * @phy_num_led_triggers: Number of triggers in @phy_led_triggers 531 * @led_link_trigger: LED trigger for link up/down 532 * @last_triggered: last LED trigger for link speed 533 * @master_slave_set: User requested master/slave configuration 534 * @master_slave_get: Current master/slave advertisement 535 * @master_slave_state: Current master/slave configuration 536 * @mii_ts: Pointer to time stamper callbacks 537 * @lock: Mutex for serialization access to PHY 538 * @state_queue: Work queue for state machine 539 * @shared: Pointer to private data shared by phys in one package 540 * @priv: Pointer to driver private data 541 * 542 * interrupts currently only supports enabled or disabled, 543 * but could be changed in the future to support enabling 544 * and disabling specific interrupts 545 * 546 * Contains some infrastructure for polling and interrupt 547 * handling, as well as handling shifts in PHY hardware state 548 */ 549 struct phy_device { 550 struct mdio_device mdio; 551 552 /* Information about the PHY type */ 553 /* And management functions */ 554 struct phy_driver *drv; 555 556 u32 phy_id; 557 558 struct phy_c45_device_ids c45_ids; 559 unsigned is_c45:1; 560 unsigned is_internal:1; 561 unsigned is_pseudo_fixed_link:1; 562 unsigned is_gigabit_capable:1; 563 unsigned has_fixups:1; 564 unsigned suspended:1; 565 unsigned suspended_by_mdio_bus:1; 566 unsigned sysfs_links:1; 567 unsigned loopback_enabled:1; 568 unsigned downshifted_rate:1; 569 unsigned is_on_sfp_module:1; 570 571 unsigned autoneg:1; 572 /* The most recently read link state */ 573 unsigned link:1; 574 unsigned autoneg_complete:1; 575 576 /* Interrupts are enabled */ 577 unsigned interrupts:1; 578 579 enum phy_state state; 580 581 u32 dev_flags; 582 583 phy_interface_t interface; 584 585 /* 586 * forced speed & duplex (no autoneg) 587 * partner speed & duplex & pause (autoneg) 588 */ 589 int speed; 590 int duplex; 591 int port; 592 int pause; 593 int asym_pause; 594 u8 master_slave_get; 595 u8 master_slave_set; 596 u8 master_slave_state; 597 598 /* Union of PHY and Attached devices' supported link modes */ 599 /* See ethtool.h for more info */ 600 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); 601 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); 602 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising); 603 /* used with phy_speed_down */ 604 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_old); 605 606 /* Energy efficient ethernet modes which should be prohibited */ 607 u32 eee_broken_modes; 608 609 #ifdef CONFIG_LED_TRIGGER_PHY 610 struct phy_led_trigger *phy_led_triggers; 611 unsigned int phy_num_led_triggers; 612 struct phy_led_trigger *last_triggered; 613 614 struct phy_led_trigger *led_link_trigger; 615 #endif 616 617 /* 618 * Interrupt number for this PHY 619 * -1 means no interrupt 620 */ 621 int irq; 622 623 /* private data pointer */ 624 /* For use by PHYs to maintain extra state */ 625 void *priv; 626 627 /* shared data pointer */ 628 /* For use by PHYs inside the same package that need a shared state. */ 629 struct phy_package_shared *shared; 630 631 /* Reporting cable test results */ 632 struct sk_buff *skb; 633 void *ehdr; 634 struct nlattr *nest; 635 636 /* Interrupt and Polling infrastructure */ 637 struct delayed_work state_queue; 638 639 struct mutex lock; 640 641 /* This may be modified under the rtnl lock */ 642 bool sfp_bus_attached; 643 struct sfp_bus *sfp_bus; 644 struct phylink *phylink; 645 struct net_device *attached_dev; 646 struct mii_timestamper *mii_ts; 647 648 u8 mdix; 649 u8 mdix_ctrl; 650 651 void (*phy_link_change)(struct phy_device *phydev, bool up); 652 void (*adjust_link)(struct net_device *dev); 653 654 #if IS_ENABLED(CONFIG_MACSEC) 655 /* MACsec management functions */ 656 const struct macsec_ops *macsec_ops; 657 #endif 658 }; 659 660 static inline struct phy_device *to_phy_device(const struct device *dev) 661 { 662 return container_of(to_mdio_device(dev), struct phy_device, mdio); 663 } 664 665 /** 666 * struct phy_tdr_config - Configuration of a TDR raw test 667 * 668 * @first: Distance for first data collection point 669 * @last: Distance for last data collection point 670 * @step: Step between data collection points 671 * @pair: Bitmap of cable pairs to collect data for 672 * 673 * A structure containing possible configuration parameters 674 * for a TDR cable test. The driver does not need to implement 675 * all the parameters, but should report what is actually used. 676 * All distances are in centimeters. 677 */ 678 struct phy_tdr_config { 679 u32 first; 680 u32 last; 681 u32 step; 682 s8 pair; 683 }; 684 #define PHY_PAIR_ALL -1 685 686 /** 687 * struct phy_driver - Driver structure for a particular PHY type 688 * 689 * @mdiodrv: Data common to all MDIO devices 690 * @phy_id: The result of reading the UID registers of this PHY 691 * type, and ANDing them with the phy_id_mask. This driver 692 * only works for PHYs with IDs which match this field 693 * @name: The friendly name of this PHY type 694 * @phy_id_mask: Defines the important bits of the phy_id 695 * @features: A mandatory list of features (speed, duplex, etc) 696 * supported by this PHY 697 * @flags: A bitfield defining certain other features this PHY 698 * supports (like interrupts) 699 * @driver_data: Static driver data 700 * 701 * All functions are optional. If config_aneg or read_status 702 * are not implemented, the phy core uses the genphy versions. 703 * Note that none of these functions should be called from 704 * interrupt time. The goal is for the bus read/write functions 705 * to be able to block when the bus transaction is happening, 706 * and be freed up by an interrupt (The MPC85xx has this ability, 707 * though it is not currently supported in the driver). 708 */ 709 struct phy_driver { 710 struct mdio_driver_common mdiodrv; 711 u32 phy_id; 712 char *name; 713 u32 phy_id_mask; 714 const unsigned long * const features; 715 u32 flags; 716 const void *driver_data; 717 718 /** 719 * @soft_reset: Called to issue a PHY software reset 720 */ 721 int (*soft_reset)(struct phy_device *phydev); 722 723 /** 724 * @config_init: Called to initialize the PHY, 725 * including after a reset 726 */ 727 int (*config_init)(struct phy_device *phydev); 728 729 /** 730 * @probe: Called during discovery. Used to set 731 * up device-specific structures, if any 732 */ 733 int (*probe)(struct phy_device *phydev); 734 735 /** 736 * @get_features: Probe the hardware to determine what 737 * abilities it has. Should only set phydev->supported. 738 */ 739 int (*get_features)(struct phy_device *phydev); 740 741 /* PHY Power Management */ 742 /** @suspend: Suspend the hardware, saving state if needed */ 743 int (*suspend)(struct phy_device *phydev); 744 /** @resume: Resume the hardware, restoring state if needed */ 745 int (*resume)(struct phy_device *phydev); 746 747 /** 748 * @config_aneg: Configures the advertisement and resets 749 * autonegotiation if phydev->autoneg is on, 750 * forces the speed to the current settings in phydev 751 * if phydev->autoneg is off 752 */ 753 int (*config_aneg)(struct phy_device *phydev); 754 755 /** @aneg_done: Determines the auto negotiation result */ 756 int (*aneg_done)(struct phy_device *phydev); 757 758 /** @read_status: Determines the negotiated speed and duplex */ 759 int (*read_status)(struct phy_device *phydev); 760 761 /** 762 * @config_intr: Enables or disables interrupts. 763 * It should also clear any pending interrupts prior to enabling the 764 * IRQs and after disabling them. 765 */ 766 int (*config_intr)(struct phy_device *phydev); 767 768 /** @handle_interrupt: Override default interrupt handling */ 769 irqreturn_t (*handle_interrupt)(struct phy_device *phydev); 770 771 /** @remove: Clears up any memory if needed */ 772 void (*remove)(struct phy_device *phydev); 773 774 /** 775 * @match_phy_device: Returns true if this is a suitable 776 * driver for the given phydev. If NULL, matching is based on 777 * phy_id and phy_id_mask. 778 */ 779 int (*match_phy_device)(struct phy_device *phydev); 780 781 /** 782 * @set_wol: Some devices (e.g. qnap TS-119P II) require PHY 783 * register changes to enable Wake on LAN, so set_wol is 784 * provided to be called in the ethernet driver's set_wol 785 * function. 786 */ 787 int (*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); 788 789 /** 790 * @get_wol: See set_wol, but for checking whether Wake on LAN 791 * is enabled. 792 */ 793 void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); 794 795 /** 796 * @link_change_notify: Called to inform a PHY device driver 797 * when the core is about to change the link state. This 798 * callback is supposed to be used as fixup hook for drivers 799 * that need to take action when the link state 800 * changes. Drivers are by no means allowed to mess with the 801 * PHY device structure in their implementations. 802 */ 803 void (*link_change_notify)(struct phy_device *dev); 804 805 /** 806 * @read_mmd: PHY specific driver override for reading a MMD 807 * register. This function is optional for PHY specific 808 * drivers. When not provided, the default MMD read function 809 * will be used by phy_read_mmd(), which will use either a 810 * direct read for Clause 45 PHYs or an indirect read for 811 * Clause 22 PHYs. devnum is the MMD device number within the 812 * PHY device, regnum is the register within the selected MMD 813 * device. 814 */ 815 int (*read_mmd)(struct phy_device *dev, int devnum, u16 regnum); 816 817 /** 818 * @write_mmd: PHY specific driver override for writing a MMD 819 * register. This function is optional for PHY specific 820 * drivers. When not provided, the default MMD write function 821 * will be used by phy_write_mmd(), which will use either a 822 * direct write for Clause 45 PHYs, or an indirect write for 823 * Clause 22 PHYs. devnum is the MMD device number within the 824 * PHY device, regnum is the register within the selected MMD 825 * device. val is the value to be written. 826 */ 827 int (*write_mmd)(struct phy_device *dev, int devnum, u16 regnum, 828 u16 val); 829 830 /** @read_page: Return the current PHY register page number */ 831 int (*read_page)(struct phy_device *dev); 832 /** @write_page: Set the current PHY register page number */ 833 int (*write_page)(struct phy_device *dev, int page); 834 835 /** 836 * @module_info: Get the size and type of the eeprom contained 837 * within a plug-in module 838 */ 839 int (*module_info)(struct phy_device *dev, 840 struct ethtool_modinfo *modinfo); 841 842 /** 843 * @module_eeprom: Get the eeprom information from the plug-in 844 * module 845 */ 846 int (*module_eeprom)(struct phy_device *dev, 847 struct ethtool_eeprom *ee, u8 *data); 848 849 /** @cable_test_start: Start a cable test */ 850 int (*cable_test_start)(struct phy_device *dev); 851 852 /** @cable_test_tdr_start: Start a raw TDR cable test */ 853 int (*cable_test_tdr_start)(struct phy_device *dev, 854 const struct phy_tdr_config *config); 855 856 /** 857 * @cable_test_get_status: Once per second, or on interrupt, 858 * request the status of the test. 859 */ 860 int (*cable_test_get_status)(struct phy_device *dev, bool *finished); 861 862 /* Get statistics from the PHY using ethtool */ 863 /** @get_sset_count: Number of statistic counters */ 864 int (*get_sset_count)(struct phy_device *dev); 865 /** @get_strings: Names of the statistic counters */ 866 void (*get_strings)(struct phy_device *dev, u8 *data); 867 /** @get_stats: Return the statistic counter values */ 868 void (*get_stats)(struct phy_device *dev, 869 struct ethtool_stats *stats, u64 *data); 870 871 /* Get and Set PHY tunables */ 872 /** @get_tunable: Return the value of a tunable */ 873 int (*get_tunable)(struct phy_device *dev, 874 struct ethtool_tunable *tuna, void *data); 875 /** @set_tunable: Set the value of a tunable */ 876 int (*set_tunable)(struct phy_device *dev, 877 struct ethtool_tunable *tuna, 878 const void *data); 879 /** @set_loopback: Set the loopback mood of the PHY */ 880 int (*set_loopback)(struct phy_device *dev, bool enable); 881 /** @get_sqi: Get the signal quality indication */ 882 int (*get_sqi)(struct phy_device *dev); 883 /** @get_sqi_max: Get the maximum signal quality indication */ 884 int (*get_sqi_max)(struct phy_device *dev); 885 }; 886 #define to_phy_driver(d) container_of(to_mdio_common_driver(d), \ 887 struct phy_driver, mdiodrv) 888 889 #define PHY_ANY_ID "MATCH ANY PHY" 890 #define PHY_ANY_UID 0xffffffff 891 892 #define PHY_ID_MATCH_EXACT(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 0) 893 #define PHY_ID_MATCH_MODEL(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 4) 894 #define PHY_ID_MATCH_VENDOR(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 10) 895 896 /* A Structure for boards to register fixups with the PHY Lib */ 897 struct phy_fixup { 898 struct list_head list; 899 char bus_id[MII_BUS_ID_SIZE + 3]; 900 u32 phy_uid; 901 u32 phy_uid_mask; 902 int (*run)(struct phy_device *phydev); 903 }; 904 905 const char *phy_speed_to_str(int speed); 906 const char *phy_duplex_to_str(unsigned int duplex); 907 908 /* A structure for mapping a particular speed and duplex 909 * combination to a particular SUPPORTED and ADVERTISED value 910 */ 911 struct phy_setting { 912 u32 speed; 913 u8 duplex; 914 u8 bit; 915 }; 916 917 const struct phy_setting * 918 phy_lookup_setting(int speed, int duplex, const unsigned long *mask, 919 bool exact); 920 size_t phy_speeds(unsigned int *speeds, size_t size, 921 unsigned long *mask); 922 void of_set_phy_supported(struct phy_device *phydev); 923 void of_set_phy_eee_broken(struct phy_device *phydev); 924 int phy_speed_down_core(struct phy_device *phydev); 925 926 /** 927 * phy_is_started - Convenience function to check whether PHY is started 928 * @phydev: The phy_device struct 929 */ 930 static inline bool phy_is_started(struct phy_device *phydev) 931 { 932 return phydev->state >= PHY_UP; 933 } 934 935 void phy_resolve_aneg_pause(struct phy_device *phydev); 936 void phy_resolve_aneg_linkmode(struct phy_device *phydev); 937 void phy_check_downshift(struct phy_device *phydev); 938 939 /** 940 * phy_read - Convenience function for reading a given PHY register 941 * @phydev: the phy_device struct 942 * @regnum: register number to read 943 * 944 * NOTE: MUST NOT be called from interrupt context, 945 * because the bus read/write functions may wait for an interrupt 946 * to conclude the operation. 947 */ 948 static inline int phy_read(struct phy_device *phydev, u32 regnum) 949 { 950 return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum); 951 } 952 953 #define phy_read_poll_timeout(phydev, regnum, val, cond, sleep_us, \ 954 timeout_us, sleep_before_read) \ 955 ({ \ 956 int __ret = read_poll_timeout(phy_read, val, (cond) || val < 0, \ 957 sleep_us, timeout_us, sleep_before_read, phydev, regnum); \ 958 if (val < 0) \ 959 __ret = val; \ 960 if (__ret) \ 961 phydev_err(phydev, "%s failed: %d\n", __func__, __ret); \ 962 __ret; \ 963 }) 964 965 966 /** 967 * __phy_read - convenience function for reading a given PHY register 968 * @phydev: the phy_device struct 969 * @regnum: register number to read 970 * 971 * The caller must have taken the MDIO bus lock. 972 */ 973 static inline int __phy_read(struct phy_device *phydev, u32 regnum) 974 { 975 return __mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum); 976 } 977 978 /** 979 * phy_write - Convenience function for writing a given PHY register 980 * @phydev: the phy_device struct 981 * @regnum: register number to write 982 * @val: value to write to @regnum 983 * 984 * NOTE: MUST NOT be called from interrupt context, 985 * because the bus read/write functions may wait for an interrupt 986 * to conclude the operation. 987 */ 988 static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val) 989 { 990 return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val); 991 } 992 993 /** 994 * __phy_write - Convenience function for writing a given PHY register 995 * @phydev: the phy_device struct 996 * @regnum: register number to write 997 * @val: value to write to @regnum 998 * 999 * The caller must have taken the MDIO bus lock. 1000 */ 1001 static inline int __phy_write(struct phy_device *phydev, u32 regnum, u16 val) 1002 { 1003 return __mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, 1004 val); 1005 } 1006 1007 /** 1008 * __phy_modify_changed() - Convenience function for modifying a PHY register 1009 * @phydev: a pointer to a &struct phy_device 1010 * @regnum: register number 1011 * @mask: bit mask of bits to clear 1012 * @set: bit mask of bits to set 1013 * 1014 * Unlocked helper function which allows a PHY register to be modified as 1015 * new register value = (old register value & ~mask) | set 1016 * 1017 * Returns negative errno, 0 if there was no change, and 1 in case of change 1018 */ 1019 static inline int __phy_modify_changed(struct phy_device *phydev, u32 regnum, 1020 u16 mask, u16 set) 1021 { 1022 return __mdiobus_modify_changed(phydev->mdio.bus, phydev->mdio.addr, 1023 regnum, mask, set); 1024 } 1025 1026 /* 1027 * phy_read_mmd - Convenience function for reading a register 1028 * from an MMD on a given PHY. 1029 */ 1030 int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); 1031 1032 /** 1033 * phy_read_mmd_poll_timeout - Periodically poll a PHY register until a 1034 * condition is met or a timeout occurs 1035 * 1036 * @phydev: The phy_device struct 1037 * @devaddr: The MMD to read from 1038 * @regnum: The register on the MMD to read 1039 * @val: Variable to read the register into 1040 * @cond: Break condition (usually involving @val) 1041 * @sleep_us: Maximum time to sleep between reads in us (0 1042 * tight-loops). Should be less than ~20ms since usleep_range 1043 * is used (see Documentation/timers/timers-howto.rst). 1044 * @timeout_us: Timeout in us, 0 means never timeout 1045 * @sleep_before_read: if it is true, sleep @sleep_us before read. 1046 * Returns 0 on success and -ETIMEDOUT upon a timeout. In either 1047 * case, the last read value at @args is stored in @val. Must not 1048 * be called from atomic context if sleep_us or timeout_us are used. 1049 */ 1050 #define phy_read_mmd_poll_timeout(phydev, devaddr, regnum, val, cond, \ 1051 sleep_us, timeout_us, sleep_before_read) \ 1052 ({ \ 1053 int __ret = read_poll_timeout(phy_read_mmd, val, (cond) || val < 0, \ 1054 sleep_us, timeout_us, sleep_before_read, \ 1055 phydev, devaddr, regnum); \ 1056 if (val < 0) \ 1057 __ret = val; \ 1058 if (__ret) \ 1059 phydev_err(phydev, "%s failed: %d\n", __func__, __ret); \ 1060 __ret; \ 1061 }) 1062 1063 /* 1064 * __phy_read_mmd - Convenience function for reading a register 1065 * from an MMD on a given PHY. 1066 */ 1067 int __phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); 1068 1069 /* 1070 * phy_write_mmd - Convenience function for writing a register 1071 * on an MMD on a given PHY. 1072 */ 1073 int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); 1074 1075 /* 1076 * __phy_write_mmd - Convenience function for writing a register 1077 * on an MMD on a given PHY. 1078 */ 1079 int __phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); 1080 1081 int __phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, 1082 u16 set); 1083 int phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, 1084 u16 set); 1085 int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); 1086 int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); 1087 1088 int __phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, 1089 u16 mask, u16 set); 1090 int phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, 1091 u16 mask, u16 set); 1092 int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, 1093 u16 mask, u16 set); 1094 int phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, 1095 u16 mask, u16 set); 1096 1097 /** 1098 * __phy_set_bits - Convenience function for setting bits in a PHY register 1099 * @phydev: the phy_device struct 1100 * @regnum: register number to write 1101 * @val: bits to set 1102 * 1103 * The caller must have taken the MDIO bus lock. 1104 */ 1105 static inline int __phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val) 1106 { 1107 return __phy_modify(phydev, regnum, 0, val); 1108 } 1109 1110 /** 1111 * __phy_clear_bits - Convenience function for clearing bits in a PHY register 1112 * @phydev: the phy_device struct 1113 * @regnum: register number to write 1114 * @val: bits to clear 1115 * 1116 * The caller must have taken the MDIO bus lock. 1117 */ 1118 static inline int __phy_clear_bits(struct phy_device *phydev, u32 regnum, 1119 u16 val) 1120 { 1121 return __phy_modify(phydev, regnum, val, 0); 1122 } 1123 1124 /** 1125 * phy_set_bits - Convenience function for setting bits in a PHY register 1126 * @phydev: the phy_device struct 1127 * @regnum: register number to write 1128 * @val: bits to set 1129 */ 1130 static inline int phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val) 1131 { 1132 return phy_modify(phydev, regnum, 0, val); 1133 } 1134 1135 /** 1136 * phy_clear_bits - Convenience function for clearing bits in a PHY register 1137 * @phydev: the phy_device struct 1138 * @regnum: register number to write 1139 * @val: bits to clear 1140 */ 1141 static inline int phy_clear_bits(struct phy_device *phydev, u32 regnum, u16 val) 1142 { 1143 return phy_modify(phydev, regnum, val, 0); 1144 } 1145 1146 /** 1147 * __phy_set_bits_mmd - Convenience function for setting bits in a register 1148 * on MMD 1149 * @phydev: the phy_device struct 1150 * @devad: the MMD containing register to modify 1151 * @regnum: register number to modify 1152 * @val: bits to set 1153 * 1154 * The caller must have taken the MDIO bus lock. 1155 */ 1156 static inline int __phy_set_bits_mmd(struct phy_device *phydev, int devad, 1157 u32 regnum, u16 val) 1158 { 1159 return __phy_modify_mmd(phydev, devad, regnum, 0, val); 1160 } 1161 1162 /** 1163 * __phy_clear_bits_mmd - Convenience function for clearing bits in a register 1164 * on MMD 1165 * @phydev: the phy_device struct 1166 * @devad: the MMD containing register to modify 1167 * @regnum: register number to modify 1168 * @val: bits to clear 1169 * 1170 * The caller must have taken the MDIO bus lock. 1171 */ 1172 static inline int __phy_clear_bits_mmd(struct phy_device *phydev, int devad, 1173 u32 regnum, u16 val) 1174 { 1175 return __phy_modify_mmd(phydev, devad, regnum, val, 0); 1176 } 1177 1178 /** 1179 * phy_set_bits_mmd - Convenience function for setting bits in a register 1180 * on MMD 1181 * @phydev: the phy_device struct 1182 * @devad: the MMD containing register to modify 1183 * @regnum: register number to modify 1184 * @val: bits to set 1185 */ 1186 static inline int phy_set_bits_mmd(struct phy_device *phydev, int devad, 1187 u32 regnum, u16 val) 1188 { 1189 return phy_modify_mmd(phydev, devad, regnum, 0, val); 1190 } 1191 1192 /** 1193 * phy_clear_bits_mmd - Convenience function for clearing bits in a register 1194 * on MMD 1195 * @phydev: the phy_device struct 1196 * @devad: the MMD containing register to modify 1197 * @regnum: register number to modify 1198 * @val: bits to clear 1199 */ 1200 static inline int phy_clear_bits_mmd(struct phy_device *phydev, int devad, 1201 u32 regnum, u16 val) 1202 { 1203 return phy_modify_mmd(phydev, devad, regnum, val, 0); 1204 } 1205 1206 /** 1207 * phy_interrupt_is_valid - Convenience function for testing a given PHY irq 1208 * @phydev: the phy_device struct 1209 * 1210 * NOTE: must be kept in sync with addition/removal of PHY_POLL and 1211 * PHY_MAC_INTERRUPT 1212 */ 1213 static inline bool phy_interrupt_is_valid(struct phy_device *phydev) 1214 { 1215 return phydev->irq != PHY_POLL && phydev->irq != PHY_MAC_INTERRUPT; 1216 } 1217 1218 /** 1219 * phy_polling_mode - Convenience function for testing whether polling is 1220 * used to detect PHY status changes 1221 * @phydev: the phy_device struct 1222 */ 1223 static inline bool phy_polling_mode(struct phy_device *phydev) 1224 { 1225 if (phydev->state == PHY_CABLETEST) 1226 if (phydev->drv->flags & PHY_POLL_CABLE_TEST) 1227 return true; 1228 1229 return phydev->irq == PHY_POLL; 1230 } 1231 1232 /** 1233 * phy_has_hwtstamp - Tests whether a PHY time stamp configuration. 1234 * @phydev: the phy_device struct 1235 */ 1236 static inline bool phy_has_hwtstamp(struct phy_device *phydev) 1237 { 1238 return phydev && phydev->mii_ts && phydev->mii_ts->hwtstamp; 1239 } 1240 1241 /** 1242 * phy_has_rxtstamp - Tests whether a PHY supports receive time stamping. 1243 * @phydev: the phy_device struct 1244 */ 1245 static inline bool phy_has_rxtstamp(struct phy_device *phydev) 1246 { 1247 return phydev && phydev->mii_ts && phydev->mii_ts->rxtstamp; 1248 } 1249 1250 /** 1251 * phy_has_tsinfo - Tests whether a PHY reports time stamping and/or 1252 * PTP hardware clock capabilities. 1253 * @phydev: the phy_device struct 1254 */ 1255 static inline bool phy_has_tsinfo(struct phy_device *phydev) 1256 { 1257 return phydev && phydev->mii_ts && phydev->mii_ts->ts_info; 1258 } 1259 1260 /** 1261 * phy_has_txtstamp - Tests whether a PHY supports transmit time stamping. 1262 * @phydev: the phy_device struct 1263 */ 1264 static inline bool phy_has_txtstamp(struct phy_device *phydev) 1265 { 1266 return phydev && phydev->mii_ts && phydev->mii_ts->txtstamp; 1267 } 1268 1269 static inline int phy_hwtstamp(struct phy_device *phydev, struct ifreq *ifr) 1270 { 1271 return phydev->mii_ts->hwtstamp(phydev->mii_ts, ifr); 1272 } 1273 1274 static inline bool phy_rxtstamp(struct phy_device *phydev, struct sk_buff *skb, 1275 int type) 1276 { 1277 return phydev->mii_ts->rxtstamp(phydev->mii_ts, skb, type); 1278 } 1279 1280 static inline int phy_ts_info(struct phy_device *phydev, 1281 struct ethtool_ts_info *tsinfo) 1282 { 1283 return phydev->mii_ts->ts_info(phydev->mii_ts, tsinfo); 1284 } 1285 1286 static inline void phy_txtstamp(struct phy_device *phydev, struct sk_buff *skb, 1287 int type) 1288 { 1289 phydev->mii_ts->txtstamp(phydev->mii_ts, skb, type); 1290 } 1291 1292 /** 1293 * phy_is_internal - Convenience function for testing if a PHY is internal 1294 * @phydev: the phy_device struct 1295 */ 1296 static inline bool phy_is_internal(struct phy_device *phydev) 1297 { 1298 return phydev->is_internal; 1299 } 1300 1301 /** 1302 * phy_on_sfp - Convenience function for testing if a PHY is on an SFP module 1303 * @phydev: the phy_device struct 1304 */ 1305 static inline bool phy_on_sfp(struct phy_device *phydev) 1306 { 1307 return phydev->is_on_sfp_module; 1308 } 1309 1310 /** 1311 * phy_interface_mode_is_rgmii - Convenience function for testing if a 1312 * PHY interface mode is RGMII (all variants) 1313 * @mode: the &phy_interface_t enum 1314 */ 1315 static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode) 1316 { 1317 return mode >= PHY_INTERFACE_MODE_RGMII && 1318 mode <= PHY_INTERFACE_MODE_RGMII_TXID; 1319 }; 1320 1321 /** 1322 * phy_interface_mode_is_8023z() - does the PHY interface mode use 802.3z 1323 * negotiation 1324 * @mode: one of &enum phy_interface_t 1325 * 1326 * Returns true if the PHY interface mode uses the 16-bit negotiation 1327 * word as defined in 802.3z. (See 802.3-2015 37.2.1 Config_Reg encoding) 1328 */ 1329 static inline bool phy_interface_mode_is_8023z(phy_interface_t mode) 1330 { 1331 return mode == PHY_INTERFACE_MODE_1000BASEX || 1332 mode == PHY_INTERFACE_MODE_2500BASEX; 1333 } 1334 1335 /** 1336 * phy_interface_is_rgmii - Convenience function for testing if a PHY interface 1337 * is RGMII (all variants) 1338 * @phydev: the phy_device struct 1339 */ 1340 static inline bool phy_interface_is_rgmii(struct phy_device *phydev) 1341 { 1342 return phy_interface_mode_is_rgmii(phydev->interface); 1343 }; 1344 1345 /** 1346 * phy_is_pseudo_fixed_link - Convenience function for testing if this 1347 * PHY is the CPU port facing side of an Ethernet switch, or similar. 1348 * @phydev: the phy_device struct 1349 */ 1350 static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev) 1351 { 1352 return phydev->is_pseudo_fixed_link; 1353 } 1354 1355 int phy_save_page(struct phy_device *phydev); 1356 int phy_select_page(struct phy_device *phydev, int page); 1357 int phy_restore_page(struct phy_device *phydev, int oldpage, int ret); 1358 int phy_read_paged(struct phy_device *phydev, int page, u32 regnum); 1359 int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val); 1360 int phy_modify_paged_changed(struct phy_device *phydev, int page, u32 regnum, 1361 u16 mask, u16 set); 1362 int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum, 1363 u16 mask, u16 set); 1364 1365 struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id, 1366 bool is_c45, 1367 struct phy_c45_device_ids *c45_ids); 1368 #if IS_ENABLED(CONFIG_PHYLIB) 1369 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45); 1370 int phy_device_register(struct phy_device *phy); 1371 void phy_device_free(struct phy_device *phydev); 1372 #else 1373 static inline 1374 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) 1375 { 1376 return NULL; 1377 } 1378 1379 static inline int phy_device_register(struct phy_device *phy) 1380 { 1381 return 0; 1382 } 1383 1384 static inline void phy_device_free(struct phy_device *phydev) { } 1385 #endif /* CONFIG_PHYLIB */ 1386 void phy_device_remove(struct phy_device *phydev); 1387 int phy_init_hw(struct phy_device *phydev); 1388 int phy_suspend(struct phy_device *phydev); 1389 int phy_resume(struct phy_device *phydev); 1390 int __phy_resume(struct phy_device *phydev); 1391 int phy_loopback(struct phy_device *phydev, bool enable); 1392 void phy_sfp_attach(void *upstream, struct sfp_bus *bus); 1393 void phy_sfp_detach(void *upstream, struct sfp_bus *bus); 1394 int phy_sfp_probe(struct phy_device *phydev, 1395 const struct sfp_upstream_ops *ops); 1396 struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, 1397 phy_interface_t interface); 1398 struct phy_device *phy_find_first(struct mii_bus *bus); 1399 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, 1400 u32 flags, phy_interface_t interface); 1401 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, 1402 void (*handler)(struct net_device *), 1403 phy_interface_t interface); 1404 struct phy_device *phy_connect(struct net_device *dev, const char *bus_id, 1405 void (*handler)(struct net_device *), 1406 phy_interface_t interface); 1407 void phy_disconnect(struct phy_device *phydev); 1408 void phy_detach(struct phy_device *phydev); 1409 void phy_start(struct phy_device *phydev); 1410 void phy_stop(struct phy_device *phydev); 1411 int phy_start_aneg(struct phy_device *phydev); 1412 int phy_aneg_done(struct phy_device *phydev); 1413 int phy_speed_down(struct phy_device *phydev, bool sync); 1414 int phy_speed_up(struct phy_device *phydev); 1415 1416 int phy_restart_aneg(struct phy_device *phydev); 1417 int phy_reset_after_clk_enable(struct phy_device *phydev); 1418 1419 #if IS_ENABLED(CONFIG_PHYLIB) 1420 int phy_start_cable_test(struct phy_device *phydev, 1421 struct netlink_ext_ack *extack); 1422 int phy_start_cable_test_tdr(struct phy_device *phydev, 1423 struct netlink_ext_ack *extack, 1424 const struct phy_tdr_config *config); 1425 #else 1426 static inline 1427 int phy_start_cable_test(struct phy_device *phydev, 1428 struct netlink_ext_ack *extack) 1429 { 1430 NL_SET_ERR_MSG(extack, "Kernel not compiled with PHYLIB support"); 1431 return -EOPNOTSUPP; 1432 } 1433 static inline 1434 int phy_start_cable_test_tdr(struct phy_device *phydev, 1435 struct netlink_ext_ack *extack, 1436 const struct phy_tdr_config *config) 1437 { 1438 NL_SET_ERR_MSG(extack, "Kernel not compiled with PHYLIB support"); 1439 return -EOPNOTSUPP; 1440 } 1441 #endif 1442 1443 int phy_cable_test_result(struct phy_device *phydev, u8 pair, u16 result); 1444 int phy_cable_test_fault_length(struct phy_device *phydev, u8 pair, 1445 u16 cm); 1446 1447 static inline void phy_device_reset(struct phy_device *phydev, int value) 1448 { 1449 mdio_device_reset(&phydev->mdio, value); 1450 } 1451 1452 #define phydev_err(_phydev, format, args...) \ 1453 dev_err(&_phydev->mdio.dev, format, ##args) 1454 1455 #define phydev_info(_phydev, format, args...) \ 1456 dev_info(&_phydev->mdio.dev, format, ##args) 1457 1458 #define phydev_warn(_phydev, format, args...) \ 1459 dev_warn(&_phydev->mdio.dev, format, ##args) 1460 1461 #define phydev_dbg(_phydev, format, args...) \ 1462 dev_dbg(&_phydev->mdio.dev, format, ##args) 1463 1464 static inline const char *phydev_name(const struct phy_device *phydev) 1465 { 1466 return dev_name(&phydev->mdio.dev); 1467 } 1468 1469 static inline void phy_lock_mdio_bus(struct phy_device *phydev) 1470 { 1471 mutex_lock(&phydev->mdio.bus->mdio_lock); 1472 } 1473 1474 static inline void phy_unlock_mdio_bus(struct phy_device *phydev) 1475 { 1476 mutex_unlock(&phydev->mdio.bus->mdio_lock); 1477 } 1478 1479 void phy_attached_print(struct phy_device *phydev, const char *fmt, ...) 1480 __printf(2, 3); 1481 char *phy_attached_info_irq(struct phy_device *phydev) 1482 __malloc; 1483 void phy_attached_info(struct phy_device *phydev); 1484 1485 /* Clause 22 PHY */ 1486 int genphy_read_abilities(struct phy_device *phydev); 1487 int genphy_setup_forced(struct phy_device *phydev); 1488 int genphy_restart_aneg(struct phy_device *phydev); 1489 int genphy_check_and_restart_aneg(struct phy_device *phydev, bool restart); 1490 int genphy_config_eee_advert(struct phy_device *phydev); 1491 int __genphy_config_aneg(struct phy_device *phydev, bool changed); 1492 int genphy_aneg_done(struct phy_device *phydev); 1493 int genphy_update_link(struct phy_device *phydev); 1494 int genphy_read_lpa(struct phy_device *phydev); 1495 int genphy_read_status_fixed(struct phy_device *phydev); 1496 int genphy_read_status(struct phy_device *phydev); 1497 int genphy_suspend(struct phy_device *phydev); 1498 int genphy_resume(struct phy_device *phydev); 1499 int genphy_loopback(struct phy_device *phydev, bool enable); 1500 int genphy_soft_reset(struct phy_device *phydev); 1501 irqreturn_t genphy_handle_interrupt_no_ack(struct phy_device *phydev); 1502 1503 static inline int genphy_config_aneg(struct phy_device *phydev) 1504 { 1505 return __genphy_config_aneg(phydev, false); 1506 } 1507 1508 static inline int genphy_no_config_intr(struct phy_device *phydev) 1509 { 1510 return 0; 1511 } 1512 int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad, 1513 u16 regnum); 1514 int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum, 1515 u16 regnum, u16 val); 1516 1517 /* Clause 37 */ 1518 int genphy_c37_config_aneg(struct phy_device *phydev); 1519 int genphy_c37_read_status(struct phy_device *phydev); 1520 1521 /* Clause 45 PHY */ 1522 int genphy_c45_restart_aneg(struct phy_device *phydev); 1523 int genphy_c45_check_and_restart_aneg(struct phy_device *phydev, bool restart); 1524 int genphy_c45_aneg_done(struct phy_device *phydev); 1525 int genphy_c45_read_link(struct phy_device *phydev); 1526 int genphy_c45_read_lpa(struct phy_device *phydev); 1527 int genphy_c45_read_pma(struct phy_device *phydev); 1528 int genphy_c45_pma_setup_forced(struct phy_device *phydev); 1529 int genphy_c45_an_config_aneg(struct phy_device *phydev); 1530 int genphy_c45_an_disable_aneg(struct phy_device *phydev); 1531 int genphy_c45_read_mdix(struct phy_device *phydev); 1532 int genphy_c45_pma_read_abilities(struct phy_device *phydev); 1533 int genphy_c45_read_status(struct phy_device *phydev); 1534 int genphy_c45_config_aneg(struct phy_device *phydev); 1535 1536 /* Generic C45 PHY driver */ 1537 extern struct phy_driver genphy_c45_driver; 1538 1539 /* The gen10g_* functions are the old Clause 45 stub */ 1540 int gen10g_config_aneg(struct phy_device *phydev); 1541 1542 static inline int phy_read_status(struct phy_device *phydev) 1543 { 1544 if (!phydev->drv) 1545 return -EIO; 1546 1547 if (phydev->drv->read_status) 1548 return phydev->drv->read_status(phydev); 1549 else 1550 return genphy_read_status(phydev); 1551 } 1552 1553 void phy_driver_unregister(struct phy_driver *drv); 1554 void phy_drivers_unregister(struct phy_driver *drv, int n); 1555 int phy_driver_register(struct phy_driver *new_driver, struct module *owner); 1556 int phy_drivers_register(struct phy_driver *new_driver, int n, 1557 struct module *owner); 1558 void phy_error(struct phy_device *phydev); 1559 void phy_state_machine(struct work_struct *work); 1560 void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies); 1561 void phy_trigger_machine(struct phy_device *phydev); 1562 void phy_mac_interrupt(struct phy_device *phydev); 1563 void phy_start_machine(struct phy_device *phydev); 1564 void phy_stop_machine(struct phy_device *phydev); 1565 void phy_ethtool_ksettings_get(struct phy_device *phydev, 1566 struct ethtool_link_ksettings *cmd); 1567 int phy_ethtool_ksettings_set(struct phy_device *phydev, 1568 const struct ethtool_link_ksettings *cmd); 1569 int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd); 1570 int phy_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); 1571 int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd); 1572 int phy_disable_interrupts(struct phy_device *phydev); 1573 void phy_request_interrupt(struct phy_device *phydev); 1574 void phy_free_interrupt(struct phy_device *phydev); 1575 void phy_print_status(struct phy_device *phydev); 1576 int phy_set_max_speed(struct phy_device *phydev, u32 max_speed); 1577 void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode); 1578 void phy_advertise_supported(struct phy_device *phydev); 1579 void phy_support_sym_pause(struct phy_device *phydev); 1580 void phy_support_asym_pause(struct phy_device *phydev); 1581 void phy_set_sym_pause(struct phy_device *phydev, bool rx, bool tx, 1582 bool autoneg); 1583 void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx); 1584 bool phy_validate_pause(struct phy_device *phydev, 1585 struct ethtool_pauseparam *pp); 1586 void phy_get_pause(struct phy_device *phydev, bool *tx_pause, bool *rx_pause); 1587 1588 s32 phy_get_internal_delay(struct phy_device *phydev, struct device *dev, 1589 const int *delay_values, int size, bool is_rx); 1590 1591 void phy_resolve_pause(unsigned long *local_adv, unsigned long *partner_adv, 1592 bool *tx_pause, bool *rx_pause); 1593 1594 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask, 1595 int (*run)(struct phy_device *)); 1596 int phy_register_fixup_for_id(const char *bus_id, 1597 int (*run)(struct phy_device *)); 1598 int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask, 1599 int (*run)(struct phy_device *)); 1600 1601 int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask); 1602 int phy_unregister_fixup_for_id(const char *bus_id); 1603 int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask); 1604 1605 int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable); 1606 int phy_get_eee_err(struct phy_device *phydev); 1607 int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data); 1608 int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data); 1609 int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol); 1610 void phy_ethtool_get_wol(struct phy_device *phydev, 1611 struct ethtool_wolinfo *wol); 1612 int phy_ethtool_get_link_ksettings(struct net_device *ndev, 1613 struct ethtool_link_ksettings *cmd); 1614 int phy_ethtool_set_link_ksettings(struct net_device *ndev, 1615 const struct ethtool_link_ksettings *cmd); 1616 int phy_ethtool_nway_reset(struct net_device *ndev); 1617 int phy_package_join(struct phy_device *phydev, int addr, size_t priv_size); 1618 void phy_package_leave(struct phy_device *phydev); 1619 int devm_phy_package_join(struct device *dev, struct phy_device *phydev, 1620 int addr, size_t priv_size); 1621 1622 #if IS_ENABLED(CONFIG_PHYLIB) 1623 int __init mdio_bus_init(void); 1624 void mdio_bus_exit(void); 1625 #endif 1626 1627 int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data); 1628 int phy_ethtool_get_sset_count(struct phy_device *phydev); 1629 int phy_ethtool_get_stats(struct phy_device *phydev, 1630 struct ethtool_stats *stats, u64 *data); 1631 1632 static inline int phy_package_read(struct phy_device *phydev, u32 regnum) 1633 { 1634 struct phy_package_shared *shared = phydev->shared; 1635 1636 if (!shared) 1637 return -EIO; 1638 1639 return mdiobus_read(phydev->mdio.bus, shared->addr, regnum); 1640 } 1641 1642 static inline int __phy_package_read(struct phy_device *phydev, u32 regnum) 1643 { 1644 struct phy_package_shared *shared = phydev->shared; 1645 1646 if (!shared) 1647 return -EIO; 1648 1649 return __mdiobus_read(phydev->mdio.bus, shared->addr, regnum); 1650 } 1651 1652 static inline int phy_package_write(struct phy_device *phydev, 1653 u32 regnum, u16 val) 1654 { 1655 struct phy_package_shared *shared = phydev->shared; 1656 1657 if (!shared) 1658 return -EIO; 1659 1660 return mdiobus_write(phydev->mdio.bus, shared->addr, regnum, val); 1661 } 1662 1663 static inline int __phy_package_write(struct phy_device *phydev, 1664 u32 regnum, u16 val) 1665 { 1666 struct phy_package_shared *shared = phydev->shared; 1667 1668 if (!shared) 1669 return -EIO; 1670 1671 return __mdiobus_write(phydev->mdio.bus, shared->addr, regnum, val); 1672 } 1673 1674 static inline bool __phy_package_set_once(struct phy_device *phydev, 1675 unsigned int b) 1676 { 1677 struct phy_package_shared *shared = phydev->shared; 1678 1679 if (!shared) 1680 return false; 1681 1682 return !test_and_set_bit(b, &shared->flags); 1683 } 1684 1685 static inline bool phy_package_init_once(struct phy_device *phydev) 1686 { 1687 return __phy_package_set_once(phydev, PHY_SHARED_F_INIT_DONE); 1688 } 1689 1690 static inline bool phy_package_probe_once(struct phy_device *phydev) 1691 { 1692 return __phy_package_set_once(phydev, PHY_SHARED_F_PROBE_DONE); 1693 } 1694 1695 extern struct bus_type mdio_bus_type; 1696 1697 struct mdio_board_info { 1698 const char *bus_id; 1699 char modalias[MDIO_NAME_SIZE]; 1700 int mdio_addr; 1701 const void *platform_data; 1702 }; 1703 1704 #if IS_ENABLED(CONFIG_MDIO_DEVICE) 1705 int mdiobus_register_board_info(const struct mdio_board_info *info, 1706 unsigned int n); 1707 #else 1708 static inline int mdiobus_register_board_info(const struct mdio_board_info *i, 1709 unsigned int n) 1710 { 1711 return 0; 1712 } 1713 #endif 1714 1715 1716 /** 1717 * phy_module_driver() - Helper macro for registering PHY drivers 1718 * @__phy_drivers: array of PHY drivers to register 1719 * @__count: Numbers of members in array 1720 * 1721 * Helper macro for PHY drivers which do not do anything special in module 1722 * init/exit. Each module may only use this macro once, and calling it 1723 * replaces module_init() and module_exit(). 1724 */ 1725 #define phy_module_driver(__phy_drivers, __count) \ 1726 static int __init phy_module_init(void) \ 1727 { \ 1728 return phy_drivers_register(__phy_drivers, __count, THIS_MODULE); \ 1729 } \ 1730 module_init(phy_module_init); \ 1731 static void __exit phy_module_exit(void) \ 1732 { \ 1733 phy_drivers_unregister(__phy_drivers, __count); \ 1734 } \ 1735 module_exit(phy_module_exit) 1736 1737 #define module_phy_driver(__phy_drivers) \ 1738 phy_module_driver(__phy_drivers, ARRAY_SIZE(__phy_drivers)) 1739 1740 bool phy_driver_is_genphy(struct phy_device *phydev); 1741 bool phy_driver_is_genphy_10g(struct phy_device *phydev); 1742 1743 #endif /* __PHY_H */ 1744