1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Framework and drivers for configuring and reading different PHYs
4 * Based on code in sungem_phy.c and (long-removed) gianfar_phy.c
8 * Copyright (c) 2004 Freescale Semiconductor, Inc.
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>
25 #include <linux/atomic.h>
27 #define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \
31 #define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \
32 SUPPORTED_10baseT_Full)
34 #define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \
35 SUPPORTED_100baseT_Full)
37 #define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \
38 SUPPORTED_1000baseT_Full)
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;
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)
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];
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
69 #define PHY_IGNORE_INTERRUPT -2
71 #define PHY_IS_INTERNAL 0x00000001
72 #define PHY_RST_AFTER_CLK_EN 0x00000002
73 #define MDIO_DEVICE_IS_PHY 0x80000000
75 /* Interface Mode definitions */
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,
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.
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.
116 unsigned int phy_supported_speeds(struct phy_device *phy,
117 unsigned int *speeds,
121 * phy_modes - map phy_interface_t enum to device tree binding of phy-mode
122 * @interface: enum phy_interface_t value
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.
128 static inline const char *phy_modes(phy_interface_t interface)
131 case PHY_INTERFACE_MODE_NA:
133 case PHY_INTERFACE_MODE_INTERNAL:
135 case PHY_INTERFACE_MODE_MII:
137 case PHY_INTERFACE_MODE_GMII:
139 case PHY_INTERFACE_MODE_SGMII:
141 case PHY_INTERFACE_MODE_TBI:
143 case PHY_INTERFACE_MODE_REVMII:
145 case PHY_INTERFACE_MODE_RMII:
147 case PHY_INTERFACE_MODE_RGMII:
149 case PHY_INTERFACE_MODE_RGMII_ID:
151 case PHY_INTERFACE_MODE_RGMII_RXID:
153 case PHY_INTERFACE_MODE_RGMII_TXID:
155 case PHY_INTERFACE_MODE_RTBI:
157 case PHY_INTERFACE_MODE_SMII:
159 case PHY_INTERFACE_MODE_XGMII:
161 case PHY_INTERFACE_MODE_MOCA:
163 case PHY_INTERFACE_MODE_QSGMII:
165 case PHY_INTERFACE_MODE_TRGMII:
167 case PHY_INTERFACE_MODE_1000BASEX:
169 case PHY_INTERFACE_MODE_2500BASEX:
171 case PHY_INTERFACE_MODE_RXAUI:
173 case PHY_INTERFACE_MODE_XAUI:
175 case PHY_INTERFACE_MODE_10GKR:
177 case PHY_INTERFACE_MODE_USXGMII:
185 #define PHY_INIT_TIMEOUT 100000
186 #define PHY_FORCE_TIMEOUT 10
188 #define PHY_MAX_ADDR 32
190 /* Used when trying to connect to a specific phy (mii bus id:phy device id) */
191 #define PHY_ID_FMT "%s:%02x"
193 #define MII_BUS_ID_SIZE 61
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 #define MII_DEVADDR_C45_SHIFT 16
199 #define MII_REGADDR_C45_MASK GENMASK(15, 0)
206 * The Bus class for PHYs. Devices which provide access to
207 * PHYs should register using this structure
210 struct module *owner;
212 char id[MII_BUS_ID_SIZE];
214 int (*read)(struct mii_bus *bus, int addr, int regnum);
215 int (*write)(struct mii_bus *bus, int addr, int regnum, u16 val);
216 int (*reset)(struct mii_bus *bus);
219 * A lock to ensure that only one thing can read/write
220 * the MDIO bus at a time
222 struct mutex mdio_lock;
224 struct device *parent;
226 MDIOBUS_ALLOCATED = 1,
228 MDIOBUS_UNREGISTERED,
233 /* list of all PHYs on bus */
234 struct mdio_device *mdio_map[PHY_MAX_ADDR];
236 /* PHY addresses to be ignored when probing */
239 /* PHY addresses to ignore the TA/read failure */
240 u32 phy_ignore_ta_mask;
243 * An array of interrupts, each PHY's interrupt at the index
244 * matching its address
246 int irq[PHY_MAX_ADDR];
248 /* GPIO reset pulse width in microseconds */
250 /* RESET GPIO descriptor pointer */
251 struct gpio_desc *reset_gpiod;
253 #define to_mii_bus(d) container_of(d, struct mii_bus, dev)
255 struct mii_bus *mdiobus_alloc_size(size_t);
256 static inline struct mii_bus *mdiobus_alloc(void)
258 return mdiobus_alloc_size(0);
261 int __mdiobus_register(struct mii_bus *bus, struct module *owner);
262 #define mdiobus_register(bus) __mdiobus_register(bus, THIS_MODULE)
263 void mdiobus_unregister(struct mii_bus *bus);
264 void mdiobus_free(struct mii_bus *bus);
265 struct mii_bus *devm_mdiobus_alloc_size(struct device *dev, int sizeof_priv);
266 static inline struct mii_bus *devm_mdiobus_alloc(struct device *dev)
268 return devm_mdiobus_alloc_size(dev, 0);
271 void devm_mdiobus_free(struct device *dev, struct mii_bus *bus);
272 struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
274 #define PHY_INTERRUPT_DISABLED false
275 #define PHY_INTERRUPT_ENABLED true
277 /* PHY state machine states:
279 * DOWN: PHY device and driver are not ready for anything. probe
280 * should be called if and only if the PHY is in this state,
281 * given that the PHY device exists.
282 * - PHY driver probe function will set the state to READY
284 * READY: PHY is ready to send and receive packets, but the
285 * controller is not. By default, PHYs which do not implement
286 * probe will be set to this state by phy_probe().
287 * - start will set the state to UP
289 * UP: The PHY and attached device are ready to do work.
290 * Interrupts should be started here.
291 * - timer moves to NOLINK or RUNNING
293 * NOLINK: PHY is up, but not currently plugged in.
294 * - irq or timer will set RUNNING if link comes back
295 * - phy_stop moves to HALTED
297 * RUNNING: PHY is currently up, running, and possibly sending
298 * and/or receiving packets
299 * - irq or timer will set NOLINK if link goes down
300 * - phy_stop moves to HALTED
302 * HALTED: PHY is up, but no polling or interrupts are done. Or
303 * PHY is in an error state.
304 * - phy_start moves to UP
316 * struct phy_c45_device_ids - 802.3-c45 Device Identifiers
317 * @devices_in_package: Bit vector of devices present.
318 * @device_ids: The device identifer for each present device.
320 struct phy_c45_device_ids {
321 u32 devices_in_package;
325 /* phy_device: An instance of a PHY
327 * drv: Pointer to the driver for this PHY instance
328 * phy_id: UID for this device found during discovery
329 * c45_ids: 802.3-c45 Device Identifers if is_c45.
330 * is_c45: Set to true if this phy uses clause 45 addressing.
331 * is_internal: Set to true if this phy is internal to a MAC.
332 * is_pseudo_fixed_link: Set to true if this phy is an Ethernet switch, etc.
333 * is_gigabit_capable: Set to true if PHY supports 1000Mbps
334 * has_fixups: Set to true if this phy has fixups/quirks.
335 * suspended: Set to true if this phy has been suspended successfully.
336 * sysfs_links: Internal boolean tracking sysfs symbolic links setup/removal.
337 * loopback_enabled: Set true if this phy has been loopbacked successfully.
338 * state: state of the PHY for management purposes
339 * dev_flags: Device-specific flags used by the PHY driver.
340 * irq: IRQ number of the PHY's interrupt (-1 if none)
341 * phy_timer: The timer for handling the state machine
342 * attached_dev: The attached enet driver's device instance ptr
343 * adjust_link: Callback for the enet controller to respond to
344 * changes in the link state.
346 * speed, duplex, pause, supported, advertising, lp_advertising,
347 * and autoneg are used like in mii_if_info
349 * interrupts currently only supports enabled or disabled,
350 * but could be changed in the future to support enabling
351 * and disabling specific interrupts
353 * Contains some infrastructure for polling and interrupt
354 * handling, as well as handling shifts in PHY hardware state
357 struct mdio_device mdio;
359 /* Information about the PHY type */
360 /* And management functions */
361 struct phy_driver *drv;
365 struct phy_c45_device_ids c45_ids;
367 unsigned is_internal:1;
368 unsigned is_pseudo_fixed_link:1;
369 unsigned is_gigabit_capable:1;
370 unsigned has_fixups:1;
371 unsigned suspended:1;
372 unsigned sysfs_links:1;
373 unsigned loopback_enabled:1;
376 /* The most recently read link state */
378 unsigned autoneg_complete:1;
380 /* Interrupts are enabled */
381 unsigned interrupts:1;
383 enum phy_state state;
387 phy_interface_t interface;
390 * forced speed & duplex (no autoneg)
391 * partner speed & duplex & pause (autoneg)
398 /* Union of PHY and Attached devices' supported link modes */
399 /* See ethtool.h for more info */
400 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
401 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
402 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
404 /* Energy efficient ethernet modes which should be prohibited */
405 u32 eee_broken_modes;
407 #ifdef CONFIG_LED_TRIGGER_PHY
408 struct phy_led_trigger *phy_led_triggers;
409 unsigned int phy_num_led_triggers;
410 struct phy_led_trigger *last_triggered;
412 struct phy_led_trigger *led_link_trigger;
416 * Interrupt number for this PHY
417 * -1 means no interrupt
421 /* private data pointer */
422 /* For use by PHYs to maintain extra state */
425 /* Interrupt and Polling infrastructure */
426 struct delayed_work state_queue;
430 struct phylink *phylink;
431 struct net_device *attached_dev;
436 void (*phy_link_change)(struct phy_device *, bool up, bool do_carrier);
437 void (*adjust_link)(struct net_device *dev);
439 #define to_phy_device(d) container_of(to_mdio_device(d), \
440 struct phy_device, mdio)
442 /* struct phy_driver: Driver structure for a particular PHY type
444 * driver_data: static driver data
445 * phy_id: The result of reading the UID registers of this PHY
446 * type, and ANDing them with the phy_id_mask. This driver
447 * only works for PHYs with IDs which match this field
448 * name: The friendly name of this PHY type
449 * phy_id_mask: Defines the important bits of the phy_id
450 * features: A mandatory list of features (speed, duplex, etc)
451 * supported by this PHY
452 * flags: A bitfield defining certain other features this PHY
453 * supports (like interrupts)
455 * All functions are optional. If config_aneg or read_status
456 * are not implemented, the phy core uses the genphy versions.
457 * Note that none of these functions should be called from
458 * interrupt time. The goal is for the bus read/write functions
459 * to be able to block when the bus transaction is happening,
460 * and be freed up by an interrupt (The MPC85xx has this ability,
461 * though it is not currently supported in the driver).
464 struct mdio_driver_common mdiodrv;
468 const unsigned long * const features;
470 const void *driver_data;
473 * Called to issue a PHY software reset
475 int (*soft_reset)(struct phy_device *phydev);
478 * Called to initialize the PHY,
479 * including after a reset
481 int (*config_init)(struct phy_device *phydev);
484 * Called during discovery. Used to set
485 * up device-specific structures, if any
487 int (*probe)(struct phy_device *phydev);
490 * Probe the hardware to determine what abilities it has.
491 * Should only set phydev->supported.
493 int (*get_features)(struct phy_device *phydev);
495 /* PHY Power Management */
496 int (*suspend)(struct phy_device *phydev);
497 int (*resume)(struct phy_device *phydev);
500 * Configures the advertisement and resets
501 * autonegotiation if phydev->autoneg is on,
502 * forces the speed to the current settings in phydev
503 * if phydev->autoneg is off
505 int (*config_aneg)(struct phy_device *phydev);
507 /* Determines the auto negotiation result */
508 int (*aneg_done)(struct phy_device *phydev);
510 /* Determines the negotiated speed and duplex */
511 int (*read_status)(struct phy_device *phydev);
513 /* Clears any pending interrupts */
514 int (*ack_interrupt)(struct phy_device *phydev);
516 /* Enables or disables interrupts */
517 int (*config_intr)(struct phy_device *phydev);
520 * Checks if the PHY generated an interrupt.
521 * For multi-PHY devices with shared PHY interrupt pin
523 int (*did_interrupt)(struct phy_device *phydev);
525 /* Override default interrupt handling */
526 int (*handle_interrupt)(struct phy_device *phydev);
528 /* Clears up any memory if needed */
529 void (*remove)(struct phy_device *phydev);
531 /* Returns true if this is a suitable driver for the given
532 * phydev. If NULL, matching is based on phy_id and
535 int (*match_phy_device)(struct phy_device *phydev);
537 /* Handles ethtool queries for hardware time stamping. */
538 int (*ts_info)(struct phy_device *phydev, struct ethtool_ts_info *ti);
540 /* Handles SIOCSHWTSTAMP ioctl for hardware time stamping. */
541 int (*hwtstamp)(struct phy_device *phydev, struct ifreq *ifr);
544 * Requests a Rx timestamp for 'skb'. If the skb is accepted,
545 * the phy driver promises to deliver it using netif_rx() as
546 * soon as a timestamp becomes available. One of the
547 * PTP_CLASS_ values is passed in 'type'. The function must
548 * return true if the skb is accepted for delivery.
550 bool (*rxtstamp)(struct phy_device *dev, struct sk_buff *skb, int type);
553 * Requests a Tx timestamp for 'skb'. The phy driver promises
554 * to deliver it using skb_complete_tx_timestamp() as soon as a
555 * timestamp becomes available. One of the PTP_CLASS_ values
556 * is passed in 'type'.
558 void (*txtstamp)(struct phy_device *dev, struct sk_buff *skb, int type);
560 /* Some devices (e.g. qnap TS-119P II) require PHY register changes to
561 * enable Wake on LAN, so set_wol is provided to be called in the
562 * ethernet driver's set_wol function. */
563 int (*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
565 /* See set_wol, but for checking whether Wake on LAN is enabled. */
566 void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
569 * Called to inform a PHY device driver when the core is about to
570 * change the link state. This callback is supposed to be used as
571 * fixup hook for drivers that need to take action when the link
572 * state changes. Drivers are by no means allowed to mess with the
573 * PHY device structure in their implementations.
575 void (*link_change_notify)(struct phy_device *dev);
578 * Phy specific driver override for reading a MMD register.
579 * This function is optional for PHY specific drivers. When
580 * not provided, the default MMD read function will be used
581 * by phy_read_mmd(), which will use either a direct read for
582 * Clause 45 PHYs or an indirect read for Clause 22 PHYs.
583 * devnum is the MMD device number within the PHY device,
584 * regnum is the register within the selected MMD device.
586 int (*read_mmd)(struct phy_device *dev, int devnum, u16 regnum);
589 * Phy specific driver override for writing a MMD register.
590 * This function is optional for PHY specific drivers. When
591 * not provided, the default MMD write function will be used
592 * by phy_write_mmd(), which will use either a direct write for
593 * Clause 45 PHYs, or an indirect write for Clause 22 PHYs.
594 * devnum is the MMD device number within the PHY device,
595 * regnum is the register within the selected MMD device.
596 * val is the value to be written.
598 int (*write_mmd)(struct phy_device *dev, int devnum, u16 regnum,
601 int (*read_page)(struct phy_device *dev);
602 int (*write_page)(struct phy_device *dev, int page);
604 /* Get the size and type of the eeprom contained within a plug-in
606 int (*module_info)(struct phy_device *dev,
607 struct ethtool_modinfo *modinfo);
609 /* Get the eeprom information from the plug-in module */
610 int (*module_eeprom)(struct phy_device *dev,
611 struct ethtool_eeprom *ee, u8 *data);
613 /* Get statistics from the phy using ethtool */
614 int (*get_sset_count)(struct phy_device *dev);
615 void (*get_strings)(struct phy_device *dev, u8 *data);
616 void (*get_stats)(struct phy_device *dev,
617 struct ethtool_stats *stats, u64 *data);
619 /* Get and Set PHY tunables */
620 int (*get_tunable)(struct phy_device *dev,
621 struct ethtool_tunable *tuna, void *data);
622 int (*set_tunable)(struct phy_device *dev,
623 struct ethtool_tunable *tuna,
625 int (*set_loopback)(struct phy_device *dev, bool enable);
627 #define to_phy_driver(d) container_of(to_mdio_common_driver(d), \
628 struct phy_driver, mdiodrv)
630 #define PHY_ANY_ID "MATCH ANY PHY"
631 #define PHY_ANY_UID 0xffffffff
633 #define PHY_ID_MATCH_EXACT(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 0)
634 #define PHY_ID_MATCH_MODEL(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 4)
635 #define PHY_ID_MATCH_VENDOR(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 10)
637 /* A Structure for boards to register fixups with the PHY Lib */
639 struct list_head list;
640 char bus_id[MII_BUS_ID_SIZE + 3];
643 int (*run)(struct phy_device *phydev);
646 const char *phy_speed_to_str(int speed);
647 const char *phy_duplex_to_str(unsigned int duplex);
649 /* A structure for mapping a particular speed and duplex
650 * combination to a particular SUPPORTED and ADVERTISED value
658 const struct phy_setting *
659 phy_lookup_setting(int speed, int duplex, const unsigned long *mask,
661 size_t phy_speeds(unsigned int *speeds, size_t size,
662 unsigned long *mask);
663 void of_set_phy_supported(struct phy_device *phydev);
664 void of_set_phy_eee_broken(struct phy_device *phydev);
667 * phy_is_started - Convenience function to check whether PHY is started
668 * @phydev: The phy_device struct
670 static inline bool phy_is_started(struct phy_device *phydev)
672 return phydev->state >= PHY_UP;
675 void phy_resolve_aneg_linkmode(struct phy_device *phydev);
678 * phy_read - Convenience function for reading a given PHY register
679 * @phydev: the phy_device struct
680 * @regnum: register number to read
682 * NOTE: MUST NOT be called from interrupt context,
683 * because the bus read/write functions may wait for an interrupt
684 * to conclude the operation.
686 static inline int phy_read(struct phy_device *phydev, u32 regnum)
688 return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum);
692 * __phy_read - convenience function for reading a given PHY register
693 * @phydev: the phy_device struct
694 * @regnum: register number to read
696 * The caller must have taken the MDIO bus lock.
698 static inline int __phy_read(struct phy_device *phydev, u32 regnum)
700 return __mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum);
704 * phy_write - Convenience function for writing a given PHY register
705 * @phydev: the phy_device struct
706 * @regnum: register number to write
707 * @val: value to write to @regnum
709 * NOTE: MUST NOT be called from interrupt context,
710 * because the bus read/write functions may wait for an interrupt
711 * to conclude the operation.
713 static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val)
715 return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val);
719 * __phy_write - Convenience function for writing a given PHY register
720 * @phydev: the phy_device struct
721 * @regnum: register number to write
722 * @val: value to write to @regnum
724 * The caller must have taken the MDIO bus lock.
726 static inline int __phy_write(struct phy_device *phydev, u32 regnum, u16 val)
728 return __mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum,
733 * phy_read_mmd - Convenience function for reading a register
734 * from an MMD on a given PHY.
735 * @phydev: The phy_device struct
736 * @devad: The MMD to read from
737 * @regnum: The register on the MMD to read
739 * Same rules as for phy_read();
741 int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum);
744 * __phy_read_mmd - Convenience function for reading a register
745 * from an MMD on a given PHY.
746 * @phydev: The phy_device struct
747 * @devad: The MMD to read from
748 * @regnum: The register on the MMD to read
750 * Same rules as for __phy_read();
752 int __phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum);
755 * phy_write_mmd - Convenience function for writing a register
756 * on an MMD on a given PHY.
757 * @phydev: The phy_device struct
758 * @devad: The MMD to write to
759 * @regnum: The register on the MMD to read
760 * @val: value to write to @regnum
762 * Same rules as for phy_write();
764 int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
767 * __phy_write_mmd - Convenience function for writing a register
768 * on an MMD on a given PHY.
769 * @phydev: The phy_device struct
770 * @devad: The MMD to write to
771 * @regnum: The register on the MMD to read
772 * @val: value to write to @regnum
774 * Same rules as for __phy_write();
776 int __phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
778 int __phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask,
780 int phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask,
782 int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set);
783 int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set);
785 int __phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum,
787 int phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum,
789 int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum,
791 int phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum,
795 * __phy_set_bits - Convenience function for setting bits in a PHY register
796 * @phydev: the phy_device struct
797 * @regnum: register number to write
800 * The caller must have taken the MDIO bus lock.
802 static inline int __phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val)
804 return __phy_modify(phydev, regnum, 0, val);
808 * __phy_clear_bits - Convenience function for clearing bits in a PHY register
809 * @phydev: the phy_device struct
810 * @regnum: register number to write
811 * @val: bits to clear
813 * The caller must have taken the MDIO bus lock.
815 static inline int __phy_clear_bits(struct phy_device *phydev, u32 regnum,
818 return __phy_modify(phydev, regnum, val, 0);
822 * phy_set_bits - Convenience function for setting bits in a PHY register
823 * @phydev: the phy_device struct
824 * @regnum: register number to write
827 static inline int phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val)
829 return phy_modify(phydev, regnum, 0, val);
833 * phy_clear_bits - Convenience function for clearing bits in a PHY register
834 * @phydev: the phy_device struct
835 * @regnum: register number to write
836 * @val: bits to clear
838 static inline int phy_clear_bits(struct phy_device *phydev, u32 regnum, u16 val)
840 return phy_modify(phydev, regnum, val, 0);
844 * __phy_set_bits_mmd - Convenience function for setting bits in a register
846 * @phydev: the phy_device struct
847 * @devad: the MMD containing register to modify
848 * @regnum: register number to modify
851 * The caller must have taken the MDIO bus lock.
853 static inline int __phy_set_bits_mmd(struct phy_device *phydev, int devad,
856 return __phy_modify_mmd(phydev, devad, regnum, 0, val);
860 * __phy_clear_bits_mmd - Convenience function for clearing bits in a register
862 * @phydev: the phy_device struct
863 * @devad: the MMD containing register to modify
864 * @regnum: register number to modify
865 * @val: bits to clear
867 * The caller must have taken the MDIO bus lock.
869 static inline int __phy_clear_bits_mmd(struct phy_device *phydev, int devad,
872 return __phy_modify_mmd(phydev, devad, regnum, val, 0);
876 * phy_set_bits_mmd - Convenience function for setting bits in a register
878 * @phydev: the phy_device struct
879 * @devad: the MMD containing register to modify
880 * @regnum: register number to modify
883 static inline int phy_set_bits_mmd(struct phy_device *phydev, int devad,
886 return phy_modify_mmd(phydev, devad, regnum, 0, val);
890 * phy_clear_bits_mmd - Convenience function for clearing bits in a register
892 * @phydev: the phy_device struct
893 * @devad: the MMD containing register to modify
894 * @regnum: register number to modify
895 * @val: bits to clear
897 static inline int phy_clear_bits_mmd(struct phy_device *phydev, int devad,
900 return phy_modify_mmd(phydev, devad, regnum, val, 0);
904 * phy_interrupt_is_valid - Convenience function for testing a given PHY irq
905 * @phydev: the phy_device struct
907 * NOTE: must be kept in sync with addition/removal of PHY_POLL and
908 * PHY_IGNORE_INTERRUPT
910 static inline bool phy_interrupt_is_valid(struct phy_device *phydev)
912 return phydev->irq != PHY_POLL && phydev->irq != PHY_IGNORE_INTERRUPT;
916 * phy_polling_mode - Convenience function for testing whether polling is
917 * used to detect PHY status changes
918 * @phydev: the phy_device struct
920 static inline bool phy_polling_mode(struct phy_device *phydev)
922 return phydev->irq == PHY_POLL;
926 * phy_is_internal - Convenience function for testing if a PHY is internal
927 * @phydev: the phy_device struct
929 static inline bool phy_is_internal(struct phy_device *phydev)
931 return phydev->is_internal;
935 * phy_interface_mode_is_rgmii - Convenience function for testing if a
936 * PHY interface mode is RGMII (all variants)
937 * @mode: the phy_interface_t enum
939 static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode)
941 return mode >= PHY_INTERFACE_MODE_RGMII &&
942 mode <= PHY_INTERFACE_MODE_RGMII_TXID;
946 * phy_interface_mode_is_8023z() - does the phy interface mode use 802.3z
948 * @mode: one of &enum phy_interface_t
950 * Returns true if the phy interface mode uses the 16-bit negotiation
951 * word as defined in 802.3z. (See 802.3-2015 37.2.1 Config_Reg encoding)
953 static inline bool phy_interface_mode_is_8023z(phy_interface_t mode)
955 return mode == PHY_INTERFACE_MODE_1000BASEX ||
956 mode == PHY_INTERFACE_MODE_2500BASEX;
960 * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
961 * is RGMII (all variants)
962 * @phydev: the phy_device struct
964 static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
966 return phy_interface_mode_is_rgmii(phydev->interface);
970 * phy_is_pseudo_fixed_link - Convenience function for testing if this
971 * PHY is the CPU port facing side of an Ethernet switch, or similar.
972 * @phydev: the phy_device struct
974 static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev)
976 return phydev->is_pseudo_fixed_link;
979 int phy_save_page(struct phy_device *phydev);
980 int phy_select_page(struct phy_device *phydev, int page);
981 int phy_restore_page(struct phy_device *phydev, int oldpage, int ret);
982 int phy_read_paged(struct phy_device *phydev, int page, u32 regnum);
983 int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val);
984 int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum,
987 struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
989 struct phy_c45_device_ids *c45_ids);
990 #if IS_ENABLED(CONFIG_PHYLIB)
991 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45);
992 int phy_device_register(struct phy_device *phy);
993 void phy_device_free(struct phy_device *phydev);
996 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
1001 static inline int phy_device_register(struct phy_device *phy)
1006 static inline void phy_device_free(struct phy_device *phydev) { }
1007 #endif /* CONFIG_PHYLIB */
1008 void phy_device_remove(struct phy_device *phydev);
1009 int phy_init_hw(struct phy_device *phydev);
1010 int phy_suspend(struct phy_device *phydev);
1011 int phy_resume(struct phy_device *phydev);
1012 int __phy_resume(struct phy_device *phydev);
1013 int phy_loopback(struct phy_device *phydev, bool enable);
1014 struct phy_device *phy_attach(struct net_device *dev, const char *bus_id,
1015 phy_interface_t interface);
1016 struct phy_device *phy_find_first(struct mii_bus *bus);
1017 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
1018 u32 flags, phy_interface_t interface);
1019 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
1020 void (*handler)(struct net_device *),
1021 phy_interface_t interface);
1022 struct phy_device *phy_connect(struct net_device *dev, const char *bus_id,
1023 void (*handler)(struct net_device *),
1024 phy_interface_t interface);
1025 void phy_disconnect(struct phy_device *phydev);
1026 void phy_detach(struct phy_device *phydev);
1027 void phy_start(struct phy_device *phydev);
1028 void phy_stop(struct phy_device *phydev);
1029 int phy_start_aneg(struct phy_device *phydev);
1030 int phy_aneg_done(struct phy_device *phydev);
1031 int phy_speed_down(struct phy_device *phydev, bool sync);
1032 int phy_speed_up(struct phy_device *phydev);
1034 int phy_restart_aneg(struct phy_device *phydev);
1035 int phy_reset_after_clk_enable(struct phy_device *phydev);
1037 static inline void phy_device_reset(struct phy_device *phydev, int value)
1039 mdio_device_reset(&phydev->mdio, value);
1042 #define phydev_err(_phydev, format, args...) \
1043 dev_err(&_phydev->mdio.dev, format, ##args)
1045 #define phydev_info(_phydev, format, args...) \
1046 dev_info(&_phydev->mdio.dev, format, ##args)
1048 #define phydev_warn(_phydev, format, args...) \
1049 dev_warn(&_phydev->mdio.dev, format, ##args)
1051 #define phydev_dbg(_phydev, format, args...) \
1052 dev_dbg(&_phydev->mdio.dev, format, ##args)
1054 static inline const char *phydev_name(const struct phy_device *phydev)
1056 return dev_name(&phydev->mdio.dev);
1059 void phy_attached_print(struct phy_device *phydev, const char *fmt, ...)
1061 void phy_attached_info(struct phy_device *phydev);
1064 int genphy_config_init(struct phy_device *phydev);
1065 int genphy_read_abilities(struct phy_device *phydev);
1066 int genphy_setup_forced(struct phy_device *phydev);
1067 int genphy_restart_aneg(struct phy_device *phydev);
1068 int genphy_config_eee_advert(struct phy_device *phydev);
1069 int genphy_config_aneg(struct phy_device *phydev);
1070 int genphy_aneg_done(struct phy_device *phydev);
1071 int genphy_update_link(struct phy_device *phydev);
1072 int genphy_read_status(struct phy_device *phydev);
1073 int genphy_suspend(struct phy_device *phydev);
1074 int genphy_resume(struct phy_device *phydev);
1075 int genphy_loopback(struct phy_device *phydev, bool enable);
1076 int genphy_soft_reset(struct phy_device *phydev);
1077 static inline int genphy_no_soft_reset(struct phy_device *phydev)
1081 static inline int genphy_no_ack_interrupt(struct phy_device *phydev)
1085 static inline int genphy_no_config_intr(struct phy_device *phydev)
1089 int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad,
1091 int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum,
1092 u16 regnum, u16 val);
1095 int genphy_c45_restart_aneg(struct phy_device *phydev);
1096 int genphy_c45_check_and_restart_aneg(struct phy_device *phydev, bool restart);
1097 int genphy_c45_aneg_done(struct phy_device *phydev);
1098 int genphy_c45_read_link(struct phy_device *phydev);
1099 int genphy_c45_read_lpa(struct phy_device *phydev);
1100 int genphy_c45_read_pma(struct phy_device *phydev);
1101 int genphy_c45_pma_setup_forced(struct phy_device *phydev);
1102 int genphy_c45_an_config_aneg(struct phy_device *phydev);
1103 int genphy_c45_an_disable_aneg(struct phy_device *phydev);
1104 int genphy_c45_read_mdix(struct phy_device *phydev);
1105 int genphy_c45_pma_read_abilities(struct phy_device *phydev);
1106 int genphy_c45_read_status(struct phy_device *phydev);
1108 /* The gen10g_* functions are the old Clause 45 stub */
1109 int gen10g_config_aneg(struct phy_device *phydev);
1111 static inline int phy_read_status(struct phy_device *phydev)
1116 if (phydev->drv->read_status)
1117 return phydev->drv->read_status(phydev);
1119 return genphy_read_status(phydev);
1122 void phy_driver_unregister(struct phy_driver *drv);
1123 void phy_drivers_unregister(struct phy_driver *drv, int n);
1124 int phy_driver_register(struct phy_driver *new_driver, struct module *owner);
1125 int phy_drivers_register(struct phy_driver *new_driver, int n,
1126 struct module *owner);
1127 void phy_state_machine(struct work_struct *work);
1128 void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies);
1129 void phy_mac_interrupt(struct phy_device *phydev);
1130 void phy_start_machine(struct phy_device *phydev);
1131 void phy_stop_machine(struct phy_device *phydev);
1132 int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
1133 void phy_ethtool_ksettings_get(struct phy_device *phydev,
1134 struct ethtool_link_ksettings *cmd);
1135 int phy_ethtool_ksettings_set(struct phy_device *phydev,
1136 const struct ethtool_link_ksettings *cmd);
1137 int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd);
1138 void phy_request_interrupt(struct phy_device *phydev);
1139 void phy_free_interrupt(struct phy_device *phydev);
1140 void phy_print_status(struct phy_device *phydev);
1141 int phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
1142 void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode);
1143 void phy_advertise_supported(struct phy_device *phydev);
1144 void phy_support_sym_pause(struct phy_device *phydev);
1145 void phy_support_asym_pause(struct phy_device *phydev);
1146 void phy_set_sym_pause(struct phy_device *phydev, bool rx, bool tx,
1148 void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx);
1149 bool phy_validate_pause(struct phy_device *phydev,
1150 struct ethtool_pauseparam *pp);
1152 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
1153 int (*run)(struct phy_device *));
1154 int phy_register_fixup_for_id(const char *bus_id,
1155 int (*run)(struct phy_device *));
1156 int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
1157 int (*run)(struct phy_device *));
1159 int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask);
1160 int phy_unregister_fixup_for_id(const char *bus_id);
1161 int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask);
1163 int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable);
1164 int phy_get_eee_err(struct phy_device *phydev);
1165 int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data);
1166 int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data);
1167 int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);
1168 void phy_ethtool_get_wol(struct phy_device *phydev,
1169 struct ethtool_wolinfo *wol);
1170 int phy_ethtool_get_link_ksettings(struct net_device *ndev,
1171 struct ethtool_link_ksettings *cmd);
1172 int phy_ethtool_set_link_ksettings(struct net_device *ndev,
1173 const struct ethtool_link_ksettings *cmd);
1174 int phy_ethtool_nway_reset(struct net_device *ndev);
1176 #if IS_ENABLED(CONFIG_PHYLIB)
1177 int __init mdio_bus_init(void);
1178 void mdio_bus_exit(void);
1181 /* Inline function for use within net/core/ethtool.c (built-in) */
1182 static inline int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data)
1187 mutex_lock(&phydev->lock);
1188 phydev->drv->get_strings(phydev, data);
1189 mutex_unlock(&phydev->lock);
1194 static inline int phy_ethtool_get_sset_count(struct phy_device *phydev)
1201 if (phydev->drv->get_sset_count &&
1202 phydev->drv->get_strings &&
1203 phydev->drv->get_stats) {
1204 mutex_lock(&phydev->lock);
1205 ret = phydev->drv->get_sset_count(phydev);
1206 mutex_unlock(&phydev->lock);
1214 static inline int phy_ethtool_get_stats(struct phy_device *phydev,
1215 struct ethtool_stats *stats, u64 *data)
1220 mutex_lock(&phydev->lock);
1221 phydev->drv->get_stats(phydev, stats, data);
1222 mutex_unlock(&phydev->lock);
1227 extern struct bus_type mdio_bus_type;
1229 struct mdio_board_info {
1231 char modalias[MDIO_NAME_SIZE];
1233 const void *platform_data;
1236 #if IS_ENABLED(CONFIG_MDIO_DEVICE)
1237 int mdiobus_register_board_info(const struct mdio_board_info *info,
1240 static inline int mdiobus_register_board_info(const struct mdio_board_info *i,
1249 * module_phy_driver() - Helper macro for registering PHY drivers
1250 * @__phy_drivers: array of PHY drivers to register
1252 * Helper macro for PHY drivers which do not do anything special in module
1253 * init/exit. Each module may only use this macro once, and calling it
1254 * replaces module_init() and module_exit().
1256 #define phy_module_driver(__phy_drivers, __count) \
1257 static int __init phy_module_init(void) \
1259 return phy_drivers_register(__phy_drivers, __count, THIS_MODULE); \
1261 module_init(phy_module_init); \
1262 static void __exit phy_module_exit(void) \
1264 phy_drivers_unregister(__phy_drivers, __count); \
1266 module_exit(phy_module_exit)
1268 #define module_phy_driver(__phy_drivers) \
1269 phy_module_driver(__phy_drivers, ARRAY_SIZE(__phy_drivers))
1271 bool phy_driver_is_genphy(struct phy_device *phydev);
1272 bool phy_driver_is_genphy_10g(struct phy_device *phydev);
1274 #endif /* __PHY_H */