2 * Framework and drivers for configuring and reading different PHYs
3 * Based on code in sungem_phy.c and gianfar_phy.c
7 * Copyright (c) 2004 Freescale Semiconductor, Inc.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
19 #include <linux/compiler.h>
20 #include <linux/spinlock.h>
21 #include <linux/ethtool.h>
22 #include <linux/linkmode.h>
23 #include <linux/mdio.h>
24 #include <linux/mii.h>
25 #include <linux/module.h>
26 #include <linux/timer.h>
27 #include <linux/workqueue.h>
28 #include <linux/mod_devicetable.h>
30 #include <linux/atomic.h>
32 #define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \
36 #define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \
37 SUPPORTED_10baseT_Full)
39 #define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \
40 SUPPORTED_100baseT_Full)
42 #define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \
43 SUPPORTED_1000baseT_Full)
45 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_features) __ro_after_init;
46 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1_features) __ro_after_init;
47 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features) __ro_after_init;
48 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_fibre_features) __ro_after_init;
49 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_all_ports_features) __ro_after_init;
50 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_features) __ro_after_init;
51 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_full_features) __ro_after_init;
53 #define PHY_BASIC_FEATURES ((unsigned long *)&phy_basic_features)
54 #define PHY_BASIC_T1_FEATURES ((unsigned long *)&phy_basic_t1_features)
55 #define PHY_GBIT_FEATURES ((unsigned long *)&phy_gbit_features)
56 #define PHY_GBIT_FIBRE_FEATURES ((unsigned long *)&phy_gbit_fibre_features)
57 #define PHY_GBIT_ALL_PORTS_FEATURES ((unsigned long *)&phy_gbit_all_ports_features)
58 #define PHY_10GBIT_FEATURES ((unsigned long *)&phy_10gbit_features)
59 #define PHY_10GBIT_FULL_FEATURES ((unsigned long *)&phy_10gbit_full_features)
61 extern const int phy_10_100_features_array[4];
62 extern const int phy_basic_t1_features_array[2];
63 extern const int phy_gbit_features_array[2];
64 extern const int phy_10gbit_features_array[1];
67 * Set phydev->irq to PHY_POLL if interrupts are not supported,
68 * or not desired for this PHY. Set to PHY_IGNORE_INTERRUPT if
69 * the attached driver handles the interrupt
72 #define PHY_IGNORE_INTERRUPT -2
74 #define PHY_IS_INTERNAL 0x00000001
75 #define PHY_RST_AFTER_CLK_EN 0x00000002
76 #define MDIO_DEVICE_IS_PHY 0x80000000
78 /* Interface Mode definitions */
80 PHY_INTERFACE_MODE_NA,
81 PHY_INTERFACE_MODE_INTERNAL,
82 PHY_INTERFACE_MODE_MII,
83 PHY_INTERFACE_MODE_GMII,
84 PHY_INTERFACE_MODE_SGMII,
85 PHY_INTERFACE_MODE_TBI,
86 PHY_INTERFACE_MODE_REVMII,
87 PHY_INTERFACE_MODE_RMII,
88 PHY_INTERFACE_MODE_RGMII,
89 PHY_INTERFACE_MODE_RGMII_ID,
90 PHY_INTERFACE_MODE_RGMII_RXID,
91 PHY_INTERFACE_MODE_RGMII_TXID,
92 PHY_INTERFACE_MODE_RTBI,
93 PHY_INTERFACE_MODE_SMII,
94 PHY_INTERFACE_MODE_XGMII,
95 PHY_INTERFACE_MODE_MOCA,
96 PHY_INTERFACE_MODE_QSGMII,
97 PHY_INTERFACE_MODE_TRGMII,
98 PHY_INTERFACE_MODE_1000BASEX,
99 PHY_INTERFACE_MODE_2500BASEX,
100 PHY_INTERFACE_MODE_RXAUI,
101 PHY_INTERFACE_MODE_XAUI,
102 /* 10GBASE-KR, XFI, SFI - single lane 10G Serdes */
103 PHY_INTERFACE_MODE_10GKR,
104 PHY_INTERFACE_MODE_MAX,
108 * phy_supported_speeds - return all speeds currently supported by a phy device
109 * @phy: The phy device to return supported speeds of.
110 * @speeds: buffer to store supported speeds in.
111 * @size: size of speeds buffer.
113 * Description: Returns the number of supported speeds, and
114 * fills the speeds * buffer with the supported speeds. If speeds buffer is
115 * too small to contain * all currently supported speeds, will return as
116 * many speeds as can fit.
118 unsigned int phy_supported_speeds(struct phy_device *phy,
119 unsigned int *speeds,
123 * It maps 'enum phy_interface_t' found in include/linux/phy.h
124 * into the device tree binding of 'phy-mode', so that Ethernet
125 * device driver can get phy interface from device tree.
127 static inline const char *phy_modes(phy_interface_t interface)
130 case PHY_INTERFACE_MODE_NA:
132 case PHY_INTERFACE_MODE_INTERNAL:
134 case PHY_INTERFACE_MODE_MII:
136 case PHY_INTERFACE_MODE_GMII:
138 case PHY_INTERFACE_MODE_SGMII:
140 case PHY_INTERFACE_MODE_TBI:
142 case PHY_INTERFACE_MODE_REVMII:
144 case PHY_INTERFACE_MODE_RMII:
146 case PHY_INTERFACE_MODE_RGMII:
148 case PHY_INTERFACE_MODE_RGMII_ID:
150 case PHY_INTERFACE_MODE_RGMII_RXID:
152 case PHY_INTERFACE_MODE_RGMII_TXID:
154 case PHY_INTERFACE_MODE_RTBI:
156 case PHY_INTERFACE_MODE_SMII:
158 case PHY_INTERFACE_MODE_XGMII:
160 case PHY_INTERFACE_MODE_MOCA:
162 case PHY_INTERFACE_MODE_QSGMII:
164 case PHY_INTERFACE_MODE_TRGMII:
166 case PHY_INTERFACE_MODE_1000BASEX:
168 case PHY_INTERFACE_MODE_2500BASEX:
170 case PHY_INTERFACE_MODE_RXAUI:
172 case PHY_INTERFACE_MODE_XAUI:
174 case PHY_INTERFACE_MODE_10GKR:
182 #define PHY_INIT_TIMEOUT 100000
183 #define PHY_STATE_TIME 1
184 #define PHY_FORCE_TIMEOUT 10
186 #define PHY_MAX_ADDR 32
188 /* Used when trying to connect to a specific phy (mii bus id:phy device id) */
189 #define PHY_ID_FMT "%s:%02x"
191 #define MII_BUS_ID_SIZE 61
193 /* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit
194 IEEE 802.3ae clause 45 addressing mode used by 10GIGE phy chips. */
195 #define MII_ADDR_C45 (1<<30)
202 * The Bus class for PHYs. Devices which provide access to
203 * PHYs should register using this structure
206 struct module *owner;
208 char id[MII_BUS_ID_SIZE];
210 int (*read)(struct mii_bus *bus, int addr, int regnum);
211 int (*write)(struct mii_bus *bus, int addr, int regnum, u16 val);
212 int (*reset)(struct mii_bus *bus);
215 * A lock to ensure that only one thing can read/write
216 * the MDIO bus at a time
218 struct mutex mdio_lock;
220 struct device *parent;
222 MDIOBUS_ALLOCATED = 1,
224 MDIOBUS_UNREGISTERED,
229 /* list of all PHYs on bus */
230 struct mdio_device *mdio_map[PHY_MAX_ADDR];
232 /* PHY addresses to be ignored when probing */
235 /* PHY addresses to ignore the TA/read failure */
236 u32 phy_ignore_ta_mask;
239 * An array of interrupts, each PHY's interrupt at the index
240 * matching its address
242 int irq[PHY_MAX_ADDR];
244 /* GPIO reset pulse width in microseconds */
246 /* RESET GPIO descriptor pointer */
247 struct gpio_desc *reset_gpiod;
249 #define to_mii_bus(d) container_of(d, struct mii_bus, dev)
251 struct mii_bus *mdiobus_alloc_size(size_t);
252 static inline struct mii_bus *mdiobus_alloc(void)
254 return mdiobus_alloc_size(0);
257 int __mdiobus_register(struct mii_bus *bus, struct module *owner);
258 #define mdiobus_register(bus) __mdiobus_register(bus, THIS_MODULE)
259 void mdiobus_unregister(struct mii_bus *bus);
260 void mdiobus_free(struct mii_bus *bus);
261 struct mii_bus *devm_mdiobus_alloc_size(struct device *dev, int sizeof_priv);
262 static inline struct mii_bus *devm_mdiobus_alloc(struct device *dev)
264 return devm_mdiobus_alloc_size(dev, 0);
267 void devm_mdiobus_free(struct device *dev, struct mii_bus *bus);
268 struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
270 #define PHY_INTERRUPT_DISABLED false
271 #define PHY_INTERRUPT_ENABLED true
273 /* PHY state machine states:
275 * DOWN: PHY device and driver are not ready for anything. probe
276 * should be called if and only if the PHY is in this state,
277 * given that the PHY device exists.
278 * - PHY driver probe function will set the state to READY
280 * READY: PHY is ready to send and receive packets, but the
281 * controller is not. By default, PHYs which do not implement
282 * probe will be set to this state by phy_probe().
283 * - start will set the state to UP
285 * UP: The PHY and attached device are ready to do work.
286 * Interrupts should be started here.
287 * - timer moves to NOLINK or RUNNING
289 * NOLINK: PHY is up, but not currently plugged in.
290 * - irq or timer will set RUNNING if link comes back
291 * - phy_stop moves to HALTED
293 * FORCING: PHY is being configured with forced settings
294 * - if link is up, move to RUNNING
295 * - If link is down, we drop to the next highest setting, and
296 * retry (FORCING) after a timeout
297 * - phy_stop moves to HALTED
299 * RUNNING: PHY is currently up, running, and possibly sending
300 * and/or receiving packets
301 * - irq or timer will set NOLINK if link goes down
302 * - phy_stop moves to HALTED
304 * CHANGELINK: PHY experienced a change in link state
305 * - timer moves to RUNNING if link
306 * - timer moves to NOLINK if the link is down
307 * - phy_stop moves to HALTED
309 * HALTED: PHY is up, but no polling or interrupts are done. Or
310 * PHY is in an error state.
312 * - phy_start moves to RESUMING
314 * RESUMING: PHY was halted, but now wants to run again.
315 * - If we are forcing, or aneg is done, timer moves to RUNNING
316 * - If aneg is not done, timer moves to AN
317 * - phy_stop moves to HALTED
332 * struct phy_c45_device_ids - 802.3-c45 Device Identifiers
333 * @devices_in_package: Bit vector of devices present.
334 * @device_ids: The device identifer for each present device.
336 struct phy_c45_device_ids {
337 u32 devices_in_package;
341 /* phy_device: An instance of a PHY
343 * drv: Pointer to the driver for this PHY instance
344 * phy_id: UID for this device found during discovery
345 * c45_ids: 802.3-c45 Device Identifers if is_c45.
346 * is_c45: Set to true if this phy uses clause 45 addressing.
347 * is_internal: Set to true if this phy is internal to a MAC.
348 * is_pseudo_fixed_link: Set to true if this phy is an Ethernet switch, etc.
349 * has_fixups: Set to true if this phy has fixups/quirks.
350 * suspended: Set to true if this phy has been suspended successfully.
351 * sysfs_links: Internal boolean tracking sysfs symbolic links setup/removal.
352 * loopback_enabled: Set true if this phy has been loopbacked successfully.
353 * state: state of the PHY for management purposes
354 * dev_flags: Device-specific flags used by the PHY driver.
355 * link_timeout: The number of timer firings to wait before the
356 * giving up on the current attempt at acquiring a link
357 * irq: IRQ number of the PHY's interrupt (-1 if none)
358 * phy_timer: The timer for handling the state machine
359 * attached_dev: The attached enet driver's device instance ptr
360 * adjust_link: Callback for the enet controller to respond to
361 * changes in the link state.
363 * speed, duplex, pause, supported, advertising, lp_advertising,
364 * and autoneg are used like in mii_if_info
366 * interrupts currently only supports enabled or disabled,
367 * but could be changed in the future to support enabling
368 * and disabling specific interrupts
370 * Contains some infrastructure for polling and interrupt
371 * handling, as well as handling shifts in PHY hardware state
374 struct mdio_device mdio;
376 /* Information about the PHY type */
377 /* And management functions */
378 struct phy_driver *drv;
382 struct phy_c45_device_ids c45_ids;
384 unsigned is_internal:1;
385 unsigned is_pseudo_fixed_link:1;
386 unsigned has_fixups:1;
387 unsigned suspended:1;
388 unsigned sysfs_links:1;
389 unsigned loopback_enabled:1;
392 /* The most recently read link state */
395 /* Interrupts are enabled */
396 unsigned interrupts:1;
398 enum phy_state state;
402 phy_interface_t interface;
405 * forced speed & duplex (no autoneg)
406 * partner speed & duplex & pause (autoneg)
413 /* Union of PHY and Attached devices' supported link modes */
414 /* See ethtool.h for more info */
415 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
416 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
417 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
419 /* Energy efficient ethernet modes which should be prohibited */
420 u32 eee_broken_modes;
424 #ifdef CONFIG_LED_TRIGGER_PHY
425 struct phy_led_trigger *phy_led_triggers;
426 unsigned int phy_num_led_triggers;
427 struct phy_led_trigger *last_triggered;
429 struct phy_led_trigger *led_link_trigger;
433 * Interrupt number for this PHY
434 * -1 means no interrupt
438 /* private data pointer */
439 /* For use by PHYs to maintain extra state */
442 /* Interrupt and Polling infrastructure */
443 struct delayed_work state_queue;
447 struct phylink *phylink;
448 struct net_device *attached_dev;
453 void (*phy_link_change)(struct phy_device *, bool up, bool do_carrier);
454 void (*adjust_link)(struct net_device *dev);
456 #define to_phy_device(d) container_of(to_mdio_device(d), \
457 struct phy_device, mdio)
459 /* struct phy_driver: Driver structure for a particular PHY type
461 * driver_data: static driver data
462 * phy_id: The result of reading the UID registers of this PHY
463 * type, and ANDing them with the phy_id_mask. This driver
464 * only works for PHYs with IDs which match this field
465 * name: The friendly name of this PHY type
466 * phy_id_mask: Defines the important bits of the phy_id
467 * features: A list of features (speed, duplex, etc) supported
469 * flags: A bitfield defining certain other features this PHY
470 * supports (like interrupts)
472 * All functions are optional. If config_aneg or read_status
473 * are not implemented, the phy core uses the genphy versions.
474 * Note that none of these functions should be called from
475 * interrupt time. The goal is for the bus read/write functions
476 * to be able to block when the bus transaction is happening,
477 * and be freed up by an interrupt (The MPC85xx has this ability,
478 * though it is not currently supported in the driver).
481 struct mdio_driver_common mdiodrv;
485 const unsigned long * const features;
487 const void *driver_data;
490 * Called to issue a PHY software reset
492 int (*soft_reset)(struct phy_device *phydev);
495 * Called to initialize the PHY,
496 * including after a reset
498 int (*config_init)(struct phy_device *phydev);
501 * Called during discovery. Used to set
502 * up device-specific structures, if any
504 int (*probe)(struct phy_device *phydev);
506 /* PHY Power Management */
507 int (*suspend)(struct phy_device *phydev);
508 int (*resume)(struct phy_device *phydev);
511 * Configures the advertisement and resets
512 * autonegotiation if phydev->autoneg is on,
513 * forces the speed to the current settings in phydev
514 * if phydev->autoneg is off
516 int (*config_aneg)(struct phy_device *phydev);
518 /* Determines the auto negotiation result */
519 int (*aneg_done)(struct phy_device *phydev);
521 /* Determines the negotiated speed and duplex */
522 int (*read_status)(struct phy_device *phydev);
524 /* Clears any pending interrupts */
525 int (*ack_interrupt)(struct phy_device *phydev);
527 /* Enables or disables interrupts */
528 int (*config_intr)(struct phy_device *phydev);
531 * Checks if the PHY generated an interrupt.
532 * For multi-PHY devices with shared PHY interrupt pin
534 int (*did_interrupt)(struct phy_device *phydev);
536 /* Clears up any memory if needed */
537 void (*remove)(struct phy_device *phydev);
539 /* Returns true if this is a suitable driver for the given
540 * phydev. If NULL, matching is based on phy_id and
543 int (*match_phy_device)(struct phy_device *phydev);
545 /* Handles ethtool queries for hardware time stamping. */
546 int (*ts_info)(struct phy_device *phydev, struct ethtool_ts_info *ti);
548 /* Handles SIOCSHWTSTAMP ioctl for hardware time stamping. */
549 int (*hwtstamp)(struct phy_device *phydev, struct ifreq *ifr);
552 * Requests a Rx timestamp for 'skb'. If the skb is accepted,
553 * the phy driver promises to deliver it using netif_rx() as
554 * soon as a timestamp becomes available. One of the
555 * PTP_CLASS_ values is passed in 'type'. The function must
556 * return true if the skb is accepted for delivery.
558 bool (*rxtstamp)(struct phy_device *dev, struct sk_buff *skb, int type);
561 * Requests a Tx timestamp for 'skb'. The phy driver promises
562 * to deliver it using skb_complete_tx_timestamp() as soon as a
563 * timestamp becomes available. One of the PTP_CLASS_ values
564 * is passed in 'type'.
566 void (*txtstamp)(struct phy_device *dev, struct sk_buff *skb, int type);
568 /* Some devices (e.g. qnap TS-119P II) require PHY register changes to
569 * enable Wake on LAN, so set_wol is provided to be called in the
570 * ethernet driver's set_wol function. */
571 int (*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
573 /* See set_wol, but for checking whether Wake on LAN is enabled. */
574 void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
577 * Called to inform a PHY device driver when the core is about to
578 * change the link state. This callback is supposed to be used as
579 * fixup hook for drivers that need to take action when the link
580 * state changes. Drivers are by no means allowed to mess with the
581 * PHY device structure in their implementations.
583 void (*link_change_notify)(struct phy_device *dev);
586 * Phy specific driver override for reading a MMD register.
587 * This function is optional for PHY specific drivers. When
588 * not provided, the default MMD read function will be used
589 * by phy_read_mmd(), which will use either a direct read for
590 * Clause 45 PHYs or an indirect read for Clause 22 PHYs.
591 * devnum is the MMD device number within the PHY device,
592 * regnum is the register within the selected MMD device.
594 int (*read_mmd)(struct phy_device *dev, int devnum, u16 regnum);
597 * Phy specific driver override for writing a MMD register.
598 * This function is optional for PHY specific drivers. When
599 * not provided, the default MMD write function will be used
600 * by phy_write_mmd(), which will use either a direct write for
601 * Clause 45 PHYs, or an indirect write for Clause 22 PHYs.
602 * devnum is the MMD device number within the PHY device,
603 * regnum is the register within the selected MMD device.
604 * val is the value to be written.
606 int (*write_mmd)(struct phy_device *dev, int devnum, u16 regnum,
609 int (*read_page)(struct phy_device *dev);
610 int (*write_page)(struct phy_device *dev, int page);
612 /* Get the size and type of the eeprom contained within a plug-in
614 int (*module_info)(struct phy_device *dev,
615 struct ethtool_modinfo *modinfo);
617 /* Get the eeprom information from the plug-in module */
618 int (*module_eeprom)(struct phy_device *dev,
619 struct ethtool_eeprom *ee, u8 *data);
621 /* Get statistics from the phy using ethtool */
622 int (*get_sset_count)(struct phy_device *dev);
623 void (*get_strings)(struct phy_device *dev, u8 *data);
624 void (*get_stats)(struct phy_device *dev,
625 struct ethtool_stats *stats, u64 *data);
627 /* Get and Set PHY tunables */
628 int (*get_tunable)(struct phy_device *dev,
629 struct ethtool_tunable *tuna, void *data);
630 int (*set_tunable)(struct phy_device *dev,
631 struct ethtool_tunable *tuna,
633 int (*set_loopback)(struct phy_device *dev, bool enable);
635 #define to_phy_driver(d) container_of(to_mdio_common_driver(d), \
636 struct phy_driver, mdiodrv)
638 #define PHY_ANY_ID "MATCH ANY PHY"
639 #define PHY_ANY_UID 0xffffffff
641 #define PHY_ID_MATCH_EXACT(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 0)
642 #define PHY_ID_MATCH_MODEL(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 4)
643 #define PHY_ID_MATCH_VENDOR(id) .phy_id = (id), .phy_id_mask = GENMASK(31, 10)
645 /* A Structure for boards to register fixups with the PHY Lib */
647 struct list_head list;
648 char bus_id[MII_BUS_ID_SIZE + 3];
651 int (*run)(struct phy_device *phydev);
654 const char *phy_speed_to_str(int speed);
655 const char *phy_duplex_to_str(unsigned int duplex);
657 /* A structure for mapping a particular speed and duplex
658 * combination to a particular SUPPORTED and ADVERTISED value
666 const struct phy_setting *
667 phy_lookup_setting(int speed, int duplex, const unsigned long *mask,
669 size_t phy_speeds(unsigned int *speeds, size_t size,
670 unsigned long *mask);
672 void phy_resolve_aneg_linkmode(struct phy_device *phydev);
675 * phy_read_mmd - Convenience function for reading a register
676 * from an MMD on a given PHY.
677 * @phydev: The phy_device struct
678 * @devad: The MMD to read from
679 * @regnum: The register on the MMD to read
681 * Same rules as for phy_read();
683 int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum);
686 * phy_read - Convenience function for reading a given PHY register
687 * @phydev: the phy_device struct
688 * @regnum: register number to read
690 * NOTE: MUST NOT be called from interrupt context,
691 * because the bus read/write functions may wait for an interrupt
692 * to conclude the operation.
694 static inline int phy_read(struct phy_device *phydev, u32 regnum)
696 return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum);
700 * __phy_read - convenience function for reading a given PHY register
701 * @phydev: the phy_device struct
702 * @regnum: register number to read
704 * The caller must have taken the MDIO bus lock.
706 static inline int __phy_read(struct phy_device *phydev, u32 regnum)
708 return __mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum);
712 * phy_write - Convenience function for writing a given PHY register
713 * @phydev: the phy_device struct
714 * @regnum: register number to write
715 * @val: value to write to @regnum
717 * NOTE: MUST NOT be called from interrupt context,
718 * because the bus read/write functions may wait for an interrupt
719 * to conclude the operation.
721 static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val)
723 return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val);
727 * __phy_write - Convenience function for writing a given PHY register
728 * @phydev: the phy_device struct
729 * @regnum: register number to write
730 * @val: value to write to @regnum
732 * The caller must have taken the MDIO bus lock.
734 static inline int __phy_write(struct phy_device *phydev, u32 regnum, u16 val)
736 return __mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum,
740 int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set);
741 int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set);
744 * __phy_set_bits - Convenience function for setting bits in a PHY register
745 * @phydev: the phy_device struct
746 * @regnum: register number to write
749 * The caller must have taken the MDIO bus lock.
751 static inline int __phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val)
753 return __phy_modify(phydev, regnum, 0, val);
757 * __phy_clear_bits - Convenience function for clearing bits in a PHY register
758 * @phydev: the phy_device struct
759 * @regnum: register number to write
760 * @val: bits to clear
762 * The caller must have taken the MDIO bus lock.
764 static inline int __phy_clear_bits(struct phy_device *phydev, u32 regnum,
767 return __phy_modify(phydev, regnum, val, 0);
771 * phy_set_bits - Convenience function for setting bits in a PHY register
772 * @phydev: the phy_device struct
773 * @regnum: register number to write
776 static inline int phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val)
778 return phy_modify(phydev, regnum, 0, val);
782 * phy_clear_bits - Convenience function for clearing bits in a PHY register
783 * @phydev: the phy_device struct
784 * @regnum: register number to write
785 * @val: bits to clear
787 static inline int phy_clear_bits(struct phy_device *phydev, u32 regnum, u16 val)
789 return phy_modify(phydev, regnum, val, 0);
793 * phy_interrupt_is_valid - Convenience function for testing a given PHY irq
794 * @phydev: the phy_device struct
796 * NOTE: must be kept in sync with addition/removal of PHY_POLL and
797 * PHY_IGNORE_INTERRUPT
799 static inline bool phy_interrupt_is_valid(struct phy_device *phydev)
801 return phydev->irq != PHY_POLL && phydev->irq != PHY_IGNORE_INTERRUPT;
805 * phy_polling_mode - Convenience function for testing whether polling is
806 * used to detect PHY status changes
807 * @phydev: the phy_device struct
809 static inline bool phy_polling_mode(struct phy_device *phydev)
811 return phydev->irq == PHY_POLL;
815 * phy_is_internal - Convenience function for testing if a PHY is internal
816 * @phydev: the phy_device struct
818 static inline bool phy_is_internal(struct phy_device *phydev)
820 return phydev->is_internal;
824 * phy_interface_mode_is_rgmii - Convenience function for testing if a
825 * PHY interface mode is RGMII (all variants)
826 * @mode: the phy_interface_t enum
828 static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode)
830 return mode >= PHY_INTERFACE_MODE_RGMII &&
831 mode <= PHY_INTERFACE_MODE_RGMII_TXID;
835 * phy_interface_mode_is_8023z() - does the phy interface mode use 802.3z
837 * @mode: one of &enum phy_interface_t
839 * Returns true if the phy interface mode uses the 16-bit negotiation
840 * word as defined in 802.3z. (See 802.3-2015 37.2.1 Config_Reg encoding)
842 static inline bool phy_interface_mode_is_8023z(phy_interface_t mode)
844 return mode == PHY_INTERFACE_MODE_1000BASEX ||
845 mode == PHY_INTERFACE_MODE_2500BASEX;
849 * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
850 * is RGMII (all variants)
851 * @phydev: the phy_device struct
853 static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
855 return phy_interface_mode_is_rgmii(phydev->interface);
859 * phy_is_pseudo_fixed_link - Convenience function for testing if this
860 * PHY is the CPU port facing side of an Ethernet switch, or similar.
861 * @phydev: the phy_device struct
863 static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev)
865 return phydev->is_pseudo_fixed_link;
869 * phy_write_mmd - Convenience function for writing a register
870 * on an MMD on a given PHY.
871 * @phydev: The phy_device struct
872 * @devad: The MMD to read from
873 * @regnum: The register on the MMD to read
874 * @val: value to write to @regnum
876 * Same rules as for phy_write();
878 int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
880 int phy_save_page(struct phy_device *phydev);
881 int phy_select_page(struct phy_device *phydev, int page);
882 int phy_restore_page(struct phy_device *phydev, int oldpage, int ret);
883 int phy_read_paged(struct phy_device *phydev, int page, u32 regnum);
884 int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val);
885 int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum,
888 struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
890 struct phy_c45_device_ids *c45_ids);
891 #if IS_ENABLED(CONFIG_PHYLIB)
892 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45);
893 int phy_device_register(struct phy_device *phy);
894 void phy_device_free(struct phy_device *phydev);
897 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
902 static inline int phy_device_register(struct phy_device *phy)
907 static inline void phy_device_free(struct phy_device *phydev) { }
908 #endif /* CONFIG_PHYLIB */
909 void phy_device_remove(struct phy_device *phydev);
910 int phy_init_hw(struct phy_device *phydev);
911 int phy_suspend(struct phy_device *phydev);
912 int phy_resume(struct phy_device *phydev);
913 int __phy_resume(struct phy_device *phydev);
914 int phy_loopback(struct phy_device *phydev, bool enable);
915 struct phy_device *phy_attach(struct net_device *dev, const char *bus_id,
916 phy_interface_t interface);
917 struct phy_device *phy_find_first(struct mii_bus *bus);
918 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
919 u32 flags, phy_interface_t interface);
920 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
921 void (*handler)(struct net_device *),
922 phy_interface_t interface);
923 struct phy_device *phy_connect(struct net_device *dev, const char *bus_id,
924 void (*handler)(struct net_device *),
925 phy_interface_t interface);
926 void phy_disconnect(struct phy_device *phydev);
927 void phy_detach(struct phy_device *phydev);
928 void phy_start(struct phy_device *phydev);
929 void phy_stop(struct phy_device *phydev);
930 int phy_start_aneg(struct phy_device *phydev);
931 int phy_aneg_done(struct phy_device *phydev);
932 int phy_speed_down(struct phy_device *phydev, bool sync);
933 int phy_speed_up(struct phy_device *phydev);
935 int phy_stop_interrupts(struct phy_device *phydev);
936 int phy_restart_aneg(struct phy_device *phydev);
937 int phy_reset_after_clk_enable(struct phy_device *phydev);
939 static inline void phy_device_reset(struct phy_device *phydev, int value)
941 mdio_device_reset(&phydev->mdio, value);
944 #define phydev_err(_phydev, format, args...) \
945 dev_err(&_phydev->mdio.dev, format, ##args)
947 #define phydev_info(_phydev, format, args...) \
948 dev_info(&_phydev->mdio.dev, format, ##args)
950 #define phydev_warn(_phydev, format, args...) \
951 dev_warn(&_phydev->mdio.dev, format, ##args)
953 #define phydev_dbg(_phydev, format, args...) \
954 dev_dbg(&_phydev->mdio.dev, format, ##args)
956 static inline const char *phydev_name(const struct phy_device *phydev)
958 return dev_name(&phydev->mdio.dev);
961 void phy_attached_print(struct phy_device *phydev, const char *fmt, ...)
963 void phy_attached_info(struct phy_device *phydev);
966 int genphy_config_init(struct phy_device *phydev);
967 int genphy_setup_forced(struct phy_device *phydev);
968 int genphy_restart_aneg(struct phy_device *phydev);
969 int genphy_config_aneg(struct phy_device *phydev);
970 int genphy_aneg_done(struct phy_device *phydev);
971 int genphy_update_link(struct phy_device *phydev);
972 int genphy_read_status(struct phy_device *phydev);
973 int genphy_suspend(struct phy_device *phydev);
974 int genphy_resume(struct phy_device *phydev);
975 int genphy_loopback(struct phy_device *phydev, bool enable);
976 int genphy_soft_reset(struct phy_device *phydev);
977 static inline int genphy_no_soft_reset(struct phy_device *phydev)
981 int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad,
983 int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum,
984 u16 regnum, u16 val);
987 int genphy_c45_restart_aneg(struct phy_device *phydev);
988 int genphy_c45_aneg_done(struct phy_device *phydev);
989 int genphy_c45_read_link(struct phy_device *phydev, u32 mmd_mask);
990 int genphy_c45_read_lpa(struct phy_device *phydev);
991 int genphy_c45_read_pma(struct phy_device *phydev);
992 int genphy_c45_pma_setup_forced(struct phy_device *phydev);
993 int genphy_c45_an_disable_aneg(struct phy_device *phydev);
994 int genphy_c45_read_mdix(struct phy_device *phydev);
996 /* The gen10g_* functions are the old Clause 45 stub */
997 int gen10g_config_aneg(struct phy_device *phydev);
998 int gen10g_read_status(struct phy_device *phydev);
999 int gen10g_no_soft_reset(struct phy_device *phydev);
1000 int gen10g_config_init(struct phy_device *phydev);
1001 int gen10g_suspend(struct phy_device *phydev);
1002 int gen10g_resume(struct phy_device *phydev);
1004 static inline int phy_read_status(struct phy_device *phydev)
1009 if (phydev->drv->read_status)
1010 return phydev->drv->read_status(phydev);
1012 return genphy_read_status(phydev);
1015 void phy_driver_unregister(struct phy_driver *drv);
1016 void phy_drivers_unregister(struct phy_driver *drv, int n);
1017 int phy_driver_register(struct phy_driver *new_driver, struct module *owner);
1018 int phy_drivers_register(struct phy_driver *new_driver, int n,
1019 struct module *owner);
1020 void phy_state_machine(struct work_struct *work);
1021 void phy_mac_interrupt(struct phy_device *phydev);
1022 void phy_start_machine(struct phy_device *phydev);
1023 void phy_stop_machine(struct phy_device *phydev);
1024 int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
1025 void phy_ethtool_ksettings_get(struct phy_device *phydev,
1026 struct ethtool_link_ksettings *cmd);
1027 int phy_ethtool_ksettings_set(struct phy_device *phydev,
1028 const struct ethtool_link_ksettings *cmd);
1029 int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd);
1030 int phy_start_interrupts(struct phy_device *phydev);
1031 void phy_print_status(struct phy_device *phydev);
1032 int phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
1033 void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode);
1034 void phy_support_sym_pause(struct phy_device *phydev);
1035 void phy_support_asym_pause(struct phy_device *phydev);
1036 void phy_set_sym_pause(struct phy_device *phydev, bool rx, bool tx,
1038 void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx);
1039 bool phy_validate_pause(struct phy_device *phydev,
1040 struct ethtool_pauseparam *pp);
1042 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
1043 int (*run)(struct phy_device *));
1044 int phy_register_fixup_for_id(const char *bus_id,
1045 int (*run)(struct phy_device *));
1046 int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
1047 int (*run)(struct phy_device *));
1049 int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask);
1050 int phy_unregister_fixup_for_id(const char *bus_id);
1051 int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask);
1053 int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable);
1054 int phy_get_eee_err(struct phy_device *phydev);
1055 int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data);
1056 int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data);
1057 int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);
1058 void phy_ethtool_get_wol(struct phy_device *phydev,
1059 struct ethtool_wolinfo *wol);
1060 int phy_ethtool_get_link_ksettings(struct net_device *ndev,
1061 struct ethtool_link_ksettings *cmd);
1062 int phy_ethtool_set_link_ksettings(struct net_device *ndev,
1063 const struct ethtool_link_ksettings *cmd);
1064 int phy_ethtool_nway_reset(struct net_device *ndev);
1066 #if IS_ENABLED(CONFIG_PHYLIB)
1067 int __init mdio_bus_init(void);
1068 void mdio_bus_exit(void);
1071 /* Inline function for use within net/core/ethtool.c (built-in) */
1072 static inline int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data)
1077 mutex_lock(&phydev->lock);
1078 phydev->drv->get_strings(phydev, data);
1079 mutex_unlock(&phydev->lock);
1084 static inline int phy_ethtool_get_sset_count(struct phy_device *phydev)
1091 if (phydev->drv->get_sset_count &&
1092 phydev->drv->get_strings &&
1093 phydev->drv->get_stats) {
1094 mutex_lock(&phydev->lock);
1095 ret = phydev->drv->get_sset_count(phydev);
1096 mutex_unlock(&phydev->lock);
1104 static inline int phy_ethtool_get_stats(struct phy_device *phydev,
1105 struct ethtool_stats *stats, u64 *data)
1110 mutex_lock(&phydev->lock);
1111 phydev->drv->get_stats(phydev, stats, data);
1112 mutex_unlock(&phydev->lock);
1117 extern struct bus_type mdio_bus_type;
1119 struct mdio_board_info {
1121 char modalias[MDIO_NAME_SIZE];
1123 const void *platform_data;
1126 #if IS_ENABLED(CONFIG_MDIO_DEVICE)
1127 int mdiobus_register_board_info(const struct mdio_board_info *info,
1130 static inline int mdiobus_register_board_info(const struct mdio_board_info *i,
1139 * module_phy_driver() - Helper macro for registering PHY drivers
1140 * @__phy_drivers: array of PHY drivers to register
1142 * Helper macro for PHY drivers which do not do anything special in module
1143 * init/exit. Each module may only use this macro once, and calling it
1144 * replaces module_init() and module_exit().
1146 #define phy_module_driver(__phy_drivers, __count) \
1147 static int __init phy_module_init(void) \
1149 return phy_drivers_register(__phy_drivers, __count, THIS_MODULE); \
1151 module_init(phy_module_init); \
1152 static void __exit phy_module_exit(void) \
1154 phy_drivers_unregister(__phy_drivers, __count); \
1156 module_exit(phy_module_exit)
1158 #define module_phy_driver(__phy_drivers) \
1159 phy_module_driver(__phy_drivers, ARRAY_SIZE(__phy_drivers))
1161 #endif /* __PHY_H */