1 /* Framework for finding and configuring PHYs.
2 * Also contains generic PHY driver
6 * Copyright (c) 2004 Freescale Semiconductor, Inc.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17 #include <linux/kernel.h>
18 #include <linux/string.h>
19 #include <linux/errno.h>
20 #include <linux/unistd.h>
21 #include <linux/slab.h>
22 #include <linux/interrupt.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
25 #include <linux/netdevice.h>
26 #include <linux/etherdevice.h>
27 #include <linux/skbuff.h>
29 #include <linux/module.h>
30 #include <linux/mii.h>
31 #include <linux/ethtool.h>
32 #include <linux/phy.h>
33 #include <linux/mdio.h>
35 #include <linux/uaccess.h>
40 MODULE_DESCRIPTION("PHY library");
41 MODULE_AUTHOR("Andy Fleming");
42 MODULE_LICENSE("GPL");
44 void phy_device_free(struct phy_device *phydev)
46 put_device(&phydev->mdio.dev);
48 EXPORT_SYMBOL(phy_device_free);
50 static void phy_mdio_device_free(struct mdio_device *mdiodev)
52 struct phy_device *phydev;
54 phydev = container_of(mdiodev, struct phy_device, mdio);
55 phy_device_free(phydev);
58 static void phy_device_release(struct device *dev)
60 kfree(to_phy_device(dev));
63 static void phy_mdio_device_remove(struct mdio_device *mdiodev)
65 struct phy_device *phydev;
67 phydev = container_of(mdiodev, struct phy_device, mdio);
68 phy_device_remove(phydev);
77 static struct phy_driver genphy_driver[GENPHY_DRV_MAX];
79 static LIST_HEAD(phy_fixup_list);
80 static DEFINE_MUTEX(phy_fixup_lock);
83 static bool mdio_bus_phy_may_suspend(struct phy_device *phydev)
85 struct device_driver *drv = phydev->mdio.dev.driver;
86 struct phy_driver *phydrv = to_phy_driver(drv);
87 struct net_device *netdev = phydev->attached_dev;
89 if (!drv || !phydrv->suspend)
92 /* PHY not attached? May suspend if the PHY has not already been
93 * suspended as part of a prior call to phy_disconnect() ->
94 * phy_detach() -> phy_suspend() because the parent netdev might be the
95 * MDIO bus driver and clock gated at this point.
100 /* Don't suspend PHY if the attached netdev parent may wakeup.
101 * The parent may point to a PCI device, as in tg3 driver.
103 if (netdev->dev.parent && device_may_wakeup(netdev->dev.parent))
106 /* Also don't suspend PHY if the netdev itself may wakeup. This
107 * is the case for devices w/o underlaying pwr. mgmt. aware bus,
110 if (device_may_wakeup(&netdev->dev))
114 return !phydev->suspended;
117 static int mdio_bus_phy_suspend(struct device *dev)
119 struct phy_device *phydev = to_phy_device(dev);
121 /* We must stop the state machine manually, otherwise it stops out of
122 * control, possibly with the phydev->lock held. Upon resume, netdev
123 * may call phy routines that try to grab the same lock, and that may
124 * lead to a deadlock.
126 if (phydev->attached_dev && phydev->adjust_link)
127 phy_stop_machine(phydev);
129 if (!mdio_bus_phy_may_suspend(phydev))
132 phydev->suspended_by_mdio_bus = true;
134 return phy_suspend(phydev);
137 static int mdio_bus_phy_resume(struct device *dev)
139 struct phy_device *phydev = to_phy_device(dev);
142 if (!phydev->suspended_by_mdio_bus)
145 phydev->suspended_by_mdio_bus = false;
147 ret = phy_resume(phydev);
152 if (phydev->attached_dev && phydev->adjust_link)
153 phy_start_machine(phydev);
158 static int mdio_bus_phy_restore(struct device *dev)
160 struct phy_device *phydev = to_phy_device(dev);
161 struct net_device *netdev = phydev->attached_dev;
167 ret = phy_init_hw(phydev);
171 if (phydev->attached_dev && phydev->adjust_link)
172 phy_start_machine(phydev);
177 static const struct dev_pm_ops mdio_bus_phy_pm_ops = {
178 .suspend = mdio_bus_phy_suspend,
179 .resume = mdio_bus_phy_resume,
180 .freeze = mdio_bus_phy_suspend,
181 .thaw = mdio_bus_phy_resume,
182 .restore = mdio_bus_phy_restore,
185 #define MDIO_BUS_PHY_PM_OPS (&mdio_bus_phy_pm_ops)
189 #define MDIO_BUS_PHY_PM_OPS NULL
191 #endif /* CONFIG_PM */
194 * phy_register_fixup - creates a new phy_fixup and adds it to the list
195 * @bus_id: A string which matches phydev->mdio.dev.bus_id (or PHY_ANY_ID)
196 * @phy_uid: Used to match against phydev->phy_id (the UID of the PHY)
197 * It can also be PHY_ANY_UID
198 * @phy_uid_mask: Applied to phydev->phy_id and fixup->phy_uid before
200 * @run: The actual code to be run when a matching PHY is found
202 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
203 int (*run)(struct phy_device *))
205 struct phy_fixup *fixup = kzalloc(sizeof(*fixup), GFP_KERNEL);
210 strlcpy(fixup->bus_id, bus_id, sizeof(fixup->bus_id));
211 fixup->phy_uid = phy_uid;
212 fixup->phy_uid_mask = phy_uid_mask;
215 mutex_lock(&phy_fixup_lock);
216 list_add_tail(&fixup->list, &phy_fixup_list);
217 mutex_unlock(&phy_fixup_lock);
221 EXPORT_SYMBOL(phy_register_fixup);
223 /* Registers a fixup to be run on any PHY with the UID in phy_uid */
224 int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
225 int (*run)(struct phy_device *))
227 return phy_register_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask, run);
229 EXPORT_SYMBOL(phy_register_fixup_for_uid);
231 /* Registers a fixup to be run on the PHY with id string bus_id */
232 int phy_register_fixup_for_id(const char *bus_id,
233 int (*run)(struct phy_device *))
235 return phy_register_fixup(bus_id, PHY_ANY_UID, 0xffffffff, run);
237 EXPORT_SYMBOL(phy_register_fixup_for_id);
239 /* Returns 1 if fixup matches phydev in bus_id and phy_uid.
240 * Fixups can be set to match any in one or more fields.
242 static int phy_needs_fixup(struct phy_device *phydev, struct phy_fixup *fixup)
244 if (strcmp(fixup->bus_id, phydev_name(phydev)) != 0)
245 if (strcmp(fixup->bus_id, PHY_ANY_ID) != 0)
248 if ((fixup->phy_uid & fixup->phy_uid_mask) !=
249 (phydev->phy_id & fixup->phy_uid_mask))
250 if (fixup->phy_uid != PHY_ANY_UID)
256 /* Runs any matching fixups for this phydev */
257 static int phy_scan_fixups(struct phy_device *phydev)
259 struct phy_fixup *fixup;
261 mutex_lock(&phy_fixup_lock);
262 list_for_each_entry(fixup, &phy_fixup_list, list) {
263 if (phy_needs_fixup(phydev, fixup)) {
264 int err = fixup->run(phydev);
267 mutex_unlock(&phy_fixup_lock);
270 phydev->has_fixups = true;
273 mutex_unlock(&phy_fixup_lock);
278 static int phy_bus_match(struct device *dev, struct device_driver *drv)
280 struct phy_device *phydev = to_phy_device(dev);
281 struct phy_driver *phydrv = to_phy_driver(drv);
282 const int num_ids = ARRAY_SIZE(phydev->c45_ids.device_ids);
285 if (!(phydrv->mdiodrv.flags & MDIO_DEVICE_IS_PHY))
288 if (phydrv->match_phy_device)
289 return phydrv->match_phy_device(phydev);
291 if (phydev->is_c45) {
292 for (i = 1; i < num_ids; i++) {
293 if (!(phydev->c45_ids.devices_in_package & (1 << i)))
296 if ((phydrv->phy_id & phydrv->phy_id_mask) ==
297 (phydev->c45_ids.device_ids[i] &
298 phydrv->phy_id_mask))
303 return (phydrv->phy_id & phydrv->phy_id_mask) ==
304 (phydev->phy_id & phydrv->phy_id_mask);
308 struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
310 struct phy_c45_device_ids *c45_ids)
312 struct phy_device *dev;
313 struct mdio_device *mdiodev;
315 /* We allocate the device, and initialize the default values */
316 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
318 return ERR_PTR(-ENOMEM);
320 mdiodev = &dev->mdio;
321 mdiodev->dev.release = phy_device_release;
322 mdiodev->dev.parent = &bus->dev;
323 mdiodev->dev.bus = &mdio_bus_type;
325 mdiodev->pm_ops = MDIO_BUS_PHY_PM_OPS;
326 mdiodev->bus_match = phy_bus_match;
327 mdiodev->addr = addr;
328 mdiodev->flags = MDIO_DEVICE_FLAG_PHY;
329 mdiodev->device_free = phy_mdio_device_free;
330 mdiodev->device_remove = phy_mdio_device_remove;
332 dev->speed = SPEED_UNKNOWN;
333 dev->duplex = DUPLEX_UNKNOWN;
337 dev->interface = PHY_INTERFACE_MODE_GMII;
339 dev->autoneg = AUTONEG_ENABLE;
341 dev->is_c45 = is_c45;
342 dev->phy_id = phy_id;
344 dev->c45_ids = *c45_ids;
345 dev->irq = bus->irq[addr];
346 dev_set_name(&mdiodev->dev, PHY_ID_FMT, bus->id, addr);
348 dev->state = PHY_DOWN;
350 mutex_init(&dev->lock);
351 INIT_DELAYED_WORK(&dev->state_queue, phy_state_machine);
352 INIT_WORK(&dev->phy_queue, phy_change);
354 /* Request the appropriate module unconditionally; don't
355 * bother trying to do so only if it isn't already loaded,
356 * because that gets complicated. A hotplug event would have
357 * done an unconditional modprobe anyway.
358 * We don't do normal hotplug because it won't work for MDIO
359 * -- because it relies on the device staying around for long
360 * enough for the driver to get loaded. With MDIO, the NIC
361 * driver will get bored and give up as soon as it finds that
362 * there's no driver _already_ loaded.
364 request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT, MDIO_ID_ARGS(phy_id));
366 device_initialize(&mdiodev->dev);
370 EXPORT_SYMBOL(phy_device_create);
372 /* get_phy_c45_devs_in_pkg - reads a MMD's devices in package registers.
373 * @bus: the target MII bus
374 * @addr: PHY address on the MII bus
375 * @dev_addr: MMD address in the PHY.
376 * @devices_in_package: where to store the devices in package information.
378 * Description: reads devices in package registers of a MMD at @dev_addr
379 * from PHY at @addr on @bus.
381 * Returns: 0 on success, -EIO on failure.
383 static int get_phy_c45_devs_in_pkg(struct mii_bus *bus, int addr, int dev_addr,
384 u32 *devices_in_package)
386 int phy_reg, reg_addr;
388 reg_addr = MII_ADDR_C45 | dev_addr << 16 | MDIO_DEVS2;
389 phy_reg = mdiobus_read(bus, addr, reg_addr);
392 *devices_in_package = (phy_reg & 0xffff) << 16;
394 reg_addr = MII_ADDR_C45 | dev_addr << 16 | MDIO_DEVS1;
395 phy_reg = mdiobus_read(bus, addr, reg_addr);
398 *devices_in_package |= (phy_reg & 0xffff);
404 * get_phy_c45_ids - reads the specified addr for its 802.3-c45 IDs.
405 * @bus: the target MII bus
406 * @addr: PHY address on the MII bus
407 * @phy_id: where to store the ID retrieved.
408 * @c45_ids: where to store the c45 ID information.
410 * If the PHY devices-in-package appears to be valid, it and the
411 * corresponding identifiers are stored in @c45_ids, zero is stored
412 * in @phy_id. Otherwise 0xffffffff is stored in @phy_id. Returns
416 static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id,
417 struct phy_c45_device_ids *c45_ids) {
420 const int num_ids = ARRAY_SIZE(c45_ids->device_ids);
421 u32 *devs = &c45_ids->devices_in_package;
423 /* Find first non-zero Devices In package. Device zero is reserved
424 * for 802.3 c45 complied PHYs, so don't probe it at first.
426 for (i = 1; i < num_ids && *devs == 0; i++) {
427 phy_reg = get_phy_c45_devs_in_pkg(bus, addr, i, devs);
431 if ((*devs & 0x1fffffff) == 0x1fffffff) {
432 /* If mostly Fs, there is no device there,
433 * then let's continue to probe more, as some
434 * 10G PHYs have zero Devices In package,
435 * e.g. Cortina CS4315/CS4340 PHY.
437 phy_reg = get_phy_c45_devs_in_pkg(bus, addr, 0, devs);
440 /* no device there, let's get out of here */
441 if ((*devs & 0x1fffffff) == 0x1fffffff) {
442 *phy_id = 0xffffffff;
450 /* Now probe Device Identifiers for each device present. */
451 for (i = 1; i < num_ids; i++) {
452 if (!(c45_ids->devices_in_package & (1 << i)))
455 reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID1;
456 phy_reg = mdiobus_read(bus, addr, reg_addr);
459 c45_ids->device_ids[i] = (phy_reg & 0xffff) << 16;
461 reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID2;
462 phy_reg = mdiobus_read(bus, addr, reg_addr);
465 c45_ids->device_ids[i] |= (phy_reg & 0xffff);
472 * get_phy_id - reads the specified addr for its ID.
473 * @bus: the target MII bus
474 * @addr: PHY address on the MII bus
475 * @phy_id: where to store the ID retrieved.
476 * @is_c45: If true the PHY uses the 802.3 clause 45 protocol
477 * @c45_ids: where to store the c45 ID information.
479 * Description: In the case of a 802.3-c22 PHY, reads the ID registers
480 * of the PHY at @addr on the @bus, stores it in @phy_id and returns
483 * In the case of a 802.3-c45 PHY, get_phy_c45_ids() is invoked, and
484 * its return value is in turn returned.
487 static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id,
488 bool is_c45, struct phy_c45_device_ids *c45_ids)
493 return get_phy_c45_ids(bus, addr, phy_id, c45_ids);
495 /* Grab the bits from PHYIR1, and put them in the upper half */
496 phy_reg = mdiobus_read(bus, addr, MII_PHYSID1);
500 *phy_id = (phy_reg & 0xffff) << 16;
502 /* Grab the bits from PHYIR2, and put them in the lower half */
503 phy_reg = mdiobus_read(bus, addr, MII_PHYSID2);
507 *phy_id |= (phy_reg & 0xffff);
513 * get_phy_device - reads the specified PHY device and returns its @phy_device
515 * @bus: the target MII bus
516 * @addr: PHY address on the MII bus
517 * @is_c45: If true the PHY uses the 802.3 clause 45 protocol
519 * Description: Reads the ID registers of the PHY at @addr on the
520 * @bus, then allocates and returns the phy_device to represent it.
522 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
524 struct phy_c45_device_ids c45_ids = {0};
528 r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids);
532 /* If the phy_id is mostly Fs, there is no device there */
533 if ((phy_id & 0x1fffffff) == 0x1fffffff)
534 return ERR_PTR(-ENODEV);
536 return phy_device_create(bus, addr, phy_id, is_c45, &c45_ids);
538 EXPORT_SYMBOL(get_phy_device);
541 phy_id_show(struct device *dev, struct device_attribute *attr, char *buf)
543 struct phy_device *phydev = to_phy_device(dev);
545 return sprintf(buf, "0x%.8lx\n", (unsigned long)phydev->phy_id);
547 static DEVICE_ATTR_RO(phy_id);
550 phy_interface_show(struct device *dev, struct device_attribute *attr, char *buf)
552 struct phy_device *phydev = to_phy_device(dev);
553 const char *mode = NULL;
555 if (phy_is_internal(phydev))
558 mode = phy_modes(phydev->interface);
560 return sprintf(buf, "%s\n", mode);
562 static DEVICE_ATTR_RO(phy_interface);
565 phy_has_fixups_show(struct device *dev, struct device_attribute *attr,
568 struct phy_device *phydev = to_phy_device(dev);
570 return sprintf(buf, "%d\n", phydev->has_fixups);
572 static DEVICE_ATTR_RO(phy_has_fixups);
574 static struct attribute *phy_dev_attrs[] = {
575 &dev_attr_phy_id.attr,
576 &dev_attr_phy_interface.attr,
577 &dev_attr_phy_has_fixups.attr,
580 ATTRIBUTE_GROUPS(phy_dev);
583 * phy_device_register - Register the phy device on the MDIO bus
584 * @phydev: phy_device structure to be added to the MDIO bus
586 int phy_device_register(struct phy_device *phydev)
590 err = mdiobus_register_device(&phydev->mdio);
594 /* Run all of the fixups for this PHY */
595 err = phy_scan_fixups(phydev);
597 pr_err("PHY %d failed to initialize\n", phydev->mdio.addr);
601 phydev->mdio.dev.groups = phy_dev_groups;
603 err = device_add(&phydev->mdio.dev);
605 pr_err("PHY %d failed to add\n", phydev->mdio.addr);
612 mdiobus_unregister_device(&phydev->mdio);
615 EXPORT_SYMBOL(phy_device_register);
618 * phy_device_remove - Remove a previously registered phy device from the MDIO bus
619 * @phydev: phy_device structure to remove
621 * This doesn't free the phy_device itself, it merely reverses the effects
622 * of phy_device_register(). Use phy_device_free() to free the device
623 * after calling this function.
625 void phy_device_remove(struct phy_device *phydev)
627 device_del(&phydev->mdio.dev);
628 mdiobus_unregister_device(&phydev->mdio);
630 EXPORT_SYMBOL(phy_device_remove);
633 * phy_find_first - finds the first PHY device on the bus
634 * @bus: the target MII bus
636 struct phy_device *phy_find_first(struct mii_bus *bus)
638 struct phy_device *phydev;
641 for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
642 phydev = mdiobus_get_phy(bus, addr);
648 EXPORT_SYMBOL(phy_find_first);
651 * phy_prepare_link - prepares the PHY layer to monitor link status
652 * @phydev: target phy_device struct
653 * @handler: callback function for link status change notifications
655 * Description: Tells the PHY infrastructure to handle the
656 * gory details on monitoring link status (whether through
657 * polling or an interrupt), and to call back to the
658 * connected device driver when the link status changes.
659 * If you want to monitor your own link state, don't call
662 static void phy_prepare_link(struct phy_device *phydev,
663 void (*handler)(struct net_device *))
665 phydev->adjust_link = handler;
669 * phy_connect_direct - connect an ethernet device to a specific phy_device
670 * @dev: the network device to connect
671 * @phydev: the pointer to the phy device
672 * @handler: callback function for state change notifications
673 * @interface: PHY device's interface
675 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
676 void (*handler)(struct net_device *),
677 phy_interface_t interface)
684 rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface);
688 phy_prepare_link(phydev, handler);
689 phy_start_machine(phydev);
691 phy_start_interrupts(phydev);
695 EXPORT_SYMBOL(phy_connect_direct);
698 * phy_connect - connect an ethernet device to a PHY device
699 * @dev: the network device to connect
700 * @bus_id: the id string of the PHY device to connect
701 * @handler: callback function for state change notifications
702 * @interface: PHY device's interface
704 * Description: Convenience function for connecting ethernet
705 * devices to PHY devices. The default behavior is for
706 * the PHY infrastructure to handle everything, and only notify
707 * the connected driver when the link status changes. If you
708 * don't want, or can't use the provided functionality, you may
709 * choose to call only the subset of functions which provide
710 * the desired functionality.
712 struct phy_device *phy_connect(struct net_device *dev, const char *bus_id,
713 void (*handler)(struct net_device *),
714 phy_interface_t interface)
716 struct phy_device *phydev;
720 /* Search the list of PHY devices on the mdio bus for the
721 * PHY with the requested name
723 d = bus_find_device_by_name(&mdio_bus_type, NULL, bus_id);
725 pr_err("PHY %s not found\n", bus_id);
726 return ERR_PTR(-ENODEV);
728 phydev = to_phy_device(d);
730 rc = phy_connect_direct(dev, phydev, handler, interface);
737 EXPORT_SYMBOL(phy_connect);
740 * phy_disconnect - disable interrupts, stop state machine, and detach a PHY
742 * @phydev: target phy_device struct
744 void phy_disconnect(struct phy_device *phydev)
747 phy_stop_interrupts(phydev);
749 phy_stop_machine(phydev);
751 phydev->adjust_link = NULL;
755 EXPORT_SYMBOL(phy_disconnect);
758 * phy_poll_reset - Safely wait until a PHY reset has properly completed
759 * @phydev: The PHY device to poll
761 * Description: According to IEEE 802.3, Section 2, Subsection 22.2.4.1.1, as
762 * published in 2008, a PHY reset may take up to 0.5 seconds. The MII BMCR
763 * register must be polled until the BMCR_RESET bit clears.
765 * Furthermore, any attempts to write to PHY registers may have no effect
766 * or even generate MDIO bus errors until this is complete.
768 * Some PHYs (such as the Marvell 88E1111) don't entirely conform to the
769 * standard and do not fully reset after the BMCR_RESET bit is set, and may
770 * even *REQUIRE* a soft-reset to properly restart autonegotiation. In an
771 * effort to support such broken PHYs, this function is separate from the
772 * standard phy_init_hw() which will zero all the other bits in the BMCR
773 * and reapply all driver-specific and board-specific fixups.
775 static int phy_poll_reset(struct phy_device *phydev)
777 /* Poll until the reset bit clears (50ms per retry == 0.6 sec) */
778 unsigned int retries = 12;
783 ret = phy_read(phydev, MII_BMCR);
786 } while (ret & BMCR_RESET && --retries);
787 if (ret & BMCR_RESET)
790 /* Some chips (smsc911x) may still need up to another 1ms after the
791 * BMCR_RESET bit is cleared before they are usable.
797 int phy_init_hw(struct phy_device *phydev)
801 if (!phydev->drv || !phydev->drv->config_init)
804 if (phydev->drv->soft_reset)
805 ret = phydev->drv->soft_reset(phydev);
807 ret = genphy_soft_reset(phydev);
812 ret = phy_scan_fixups(phydev);
816 return phydev->drv->config_init(phydev);
818 EXPORT_SYMBOL(phy_init_hw);
820 void phy_attached_info(struct phy_device *phydev)
822 phy_attached_print(phydev, NULL);
824 EXPORT_SYMBOL(phy_attached_info);
826 #define ATTACHED_FMT "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)"
827 void phy_attached_print(struct phy_device *phydev, const char *fmt, ...)
830 dev_info(&phydev->mdio.dev, ATTACHED_FMT "\n",
831 phydev->drv->name, phydev_name(phydev),
836 dev_info(&phydev->mdio.dev, ATTACHED_FMT,
837 phydev->drv->name, phydev_name(phydev),
845 EXPORT_SYMBOL(phy_attached_print);
848 * phy_attach_direct - attach a network device to a given PHY device pointer
849 * @dev: network device to attach
850 * @phydev: Pointer to phy_device to attach
851 * @flags: PHY device's dev_flags
852 * @interface: PHY device's interface
854 * Description: Called by drivers to attach to a particular PHY
855 * device. The phy_device is found, and properly hooked up
856 * to the phy_driver. If no driver is attached, then a
857 * generic driver is used. The phy_device is given a ptr to
858 * the attaching device, and given a callback for link status
859 * change. The phy_device is returned to the attaching driver.
860 * This function takes a reference on the phy device.
862 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
863 u32 flags, phy_interface_t interface)
865 struct module *ndev_owner = dev->dev.parent->driver->owner;
866 struct mii_bus *bus = phydev->mdio.bus;
867 struct device *d = &phydev->mdio.dev;
868 bool using_genphy = false;
871 /* For Ethernet device drivers that register their own MDIO bus, we
872 * will have bus->owner match ndev_mod, so we do not want to increment
873 * our own module->refcnt here, otherwise we would not be able to
876 if (ndev_owner != bus->owner && !try_module_get(bus->owner)) {
877 dev_err(&dev->dev, "failed to get the bus module\n");
883 /* Assume that if there is no driver, that it doesn't
884 * exist, and we should use the genphy driver.
889 &genphy_driver[GENPHY_DRV_10G].mdiodrv.driver;
892 &genphy_driver[GENPHY_DRV_1G].mdiodrv.driver;
897 if (!try_module_get(d->driver->owner)) {
898 dev_err(&dev->dev, "failed to get the device driver module\n");
900 goto error_put_device;
904 err = d->driver->probe(d);
906 err = device_bind_driver(d);
909 goto error_module_put;
912 if (phydev->attached_dev) {
913 dev_err(&dev->dev, "PHY already attached\n");
918 phydev->attached_dev = dev;
919 dev->phydev = phydev;
921 phydev->dev_flags = flags;
923 phydev->interface = interface;
925 phydev->state = PHY_READY;
927 /* Initial carrier state is off as the phy is about to be
930 netif_carrier_off(phydev->attached_dev);
932 /* Do initial configuration here, now that
933 * we have certain key parameters
934 * (dev_flags and interface)
936 err = phy_init_hw(phydev);
945 /* phy_detach() does all of the cleanup below */
950 module_put(d->driver->owner);
954 if (ndev_owner != bus->owner)
955 module_put(bus->owner);
958 EXPORT_SYMBOL(phy_attach_direct);
961 * phy_attach - attach a network device to a particular PHY device
962 * @dev: network device to attach
963 * @bus_id: Bus ID of PHY device to attach
964 * @interface: PHY device's interface
966 * Description: Same as phy_attach_direct() except that a PHY bus_id
967 * string is passed instead of a pointer to a struct phy_device.
969 struct phy_device *phy_attach(struct net_device *dev, const char *bus_id,
970 phy_interface_t interface)
972 struct bus_type *bus = &mdio_bus_type;
973 struct phy_device *phydev;
978 return ERR_PTR(-EINVAL);
980 /* Search the list of PHY devices on the mdio bus for the
981 * PHY with the requested name
983 d = bus_find_device_by_name(bus, NULL, bus_id);
985 pr_err("PHY %s not found\n", bus_id);
986 return ERR_PTR(-ENODEV);
988 phydev = to_phy_device(d);
990 rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface);
997 EXPORT_SYMBOL(phy_attach);
1000 * phy_detach - detach a PHY device from its network device
1001 * @phydev: target phy_device struct
1003 * This detaches the phy device from its network device and the phy
1004 * driver, and drops the reference count taken in phy_attach_direct().
1006 void phy_detach(struct phy_device *phydev)
1008 struct net_device *dev = phydev->attached_dev;
1009 struct module *ndev_owner = dev->dev.parent->driver->owner;
1010 struct mii_bus *bus;
1013 phydev->attached_dev->phydev = NULL;
1014 phydev->attached_dev = NULL;
1015 phy_suspend(phydev);
1017 if (phydev->mdio.dev.driver)
1018 module_put(phydev->mdio.dev.driver->owner);
1020 /* If the device had no specific driver before (i.e. - it
1021 * was using the generic driver), we unbind the device
1022 * from the generic driver so that there's a chance a
1023 * real driver could be loaded
1025 for (i = 0; i < ARRAY_SIZE(genphy_driver); i++) {
1026 if (phydev->mdio.dev.driver ==
1027 &genphy_driver[i].mdiodrv.driver) {
1028 device_release_driver(&phydev->mdio.dev);
1034 * The phydev might go away on the put_device() below, so avoid
1035 * a use-after-free bug by reading the underlying bus first.
1037 bus = phydev->mdio.bus;
1039 put_device(&phydev->mdio.dev);
1040 if (ndev_owner != bus->owner)
1041 module_put(bus->owner);
1043 EXPORT_SYMBOL(phy_detach);
1045 int phy_suspend(struct phy_device *phydev)
1047 struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver);
1048 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1051 /* If the device has WOL enabled, we cannot suspend the PHY */
1052 phy_ethtool_get_wol(phydev, &wol);
1056 if (phydrv->suspend)
1057 ret = phydrv->suspend(phydev);
1062 phydev->suspended = true;
1066 EXPORT_SYMBOL(phy_suspend);
1068 int phy_resume(struct phy_device *phydev)
1070 struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver);
1074 ret = phydrv->resume(phydev);
1079 phydev->suspended = false;
1083 EXPORT_SYMBOL(phy_resume);
1085 /* Generic PHY support and helper functions */
1088 * genphy_config_advert - sanitize and advertise auto-negotiation parameters
1089 * @phydev: target phy_device struct
1091 * Description: Writes MII_ADVERTISE with the appropriate values,
1092 * after sanitizing the values to make sure we only advertise
1093 * what is supported. Returns < 0 on error, 0 if the PHY's advertisement
1094 * hasn't changed, and > 0 if it has changed.
1096 static int genphy_config_advert(struct phy_device *phydev)
1099 int oldadv, adv, bmsr;
1100 int err, changed = 0;
1102 /* Only allow advertising what this PHY supports */
1103 phydev->advertising &= phydev->supported;
1104 advertise = phydev->advertising;
1106 /* Setup standard advertisement */
1107 adv = phy_read(phydev, MII_ADVERTISE);
1112 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP |
1113 ADVERTISE_PAUSE_ASYM);
1114 adv |= ethtool_adv_to_mii_adv_t(advertise);
1116 if (adv != oldadv) {
1117 err = phy_write(phydev, MII_ADVERTISE, adv);
1124 bmsr = phy_read(phydev, MII_BMSR);
1128 /* Per 802.3-2008, Section 22.2.4.2.16 Extended status all
1129 * 1000Mbits/sec capable PHYs shall have the BMSR_ESTATEN bit set to a
1132 if (!(bmsr & BMSR_ESTATEN))
1135 /* Configure gigabit if it's supported */
1136 adv = phy_read(phydev, MII_CTRL1000);
1141 adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
1143 if (phydev->supported & (SUPPORTED_1000baseT_Half |
1144 SUPPORTED_1000baseT_Full)) {
1145 adv |= ethtool_adv_to_mii_ctrl1000_t(advertise);
1151 err = phy_write(phydev, MII_CTRL1000, adv);
1159 * genphy_config_eee_advert - disable unwanted eee mode advertisement
1160 * @phydev: target phy_device struct
1162 * Description: Writes MDIO_AN_EEE_ADV after disabling unsupported energy
1163 * efficent ethernet modes. Returns 0 if the PHY's advertisement hasn't
1164 * changed, and 1 if it has changed.
1166 static int genphy_config_eee_advert(struct phy_device *phydev)
1168 int broken = phydev->eee_broken_modes;
1171 /* Nothing to disable */
1175 /* If the following call fails, we assume that EEE is not
1176 * supported by the phy. If we read 0, EEE is not advertised
1177 * In both case, we don't need to continue
1179 adv = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN);
1186 /* Advertising remains unchanged with the broken mask */
1190 phy_write_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN, adv);
1196 * genphy_setup_forced - configures/forces speed/duplex from @phydev
1197 * @phydev: target phy_device struct
1199 * Description: Configures MII_BMCR to force speed/duplex
1200 * to the values in phydev. Assumes that the values are valid.
1201 * Please see phy_sanitize_settings().
1203 int genphy_setup_forced(struct phy_device *phydev)
1205 int ctl = phy_read(phydev, MII_BMCR);
1207 ctl &= BMCR_LOOPBACK | BMCR_ISOLATE | BMCR_PDOWN;
1209 phydev->asym_pause = 0;
1211 if (SPEED_1000 == phydev->speed)
1212 ctl |= BMCR_SPEED1000;
1213 else if (SPEED_100 == phydev->speed)
1214 ctl |= BMCR_SPEED100;
1216 if (DUPLEX_FULL == phydev->duplex)
1217 ctl |= BMCR_FULLDPLX;
1219 return phy_write(phydev, MII_BMCR, ctl);
1221 EXPORT_SYMBOL(genphy_setup_forced);
1224 * genphy_restart_aneg - Enable and Restart Autonegotiation
1225 * @phydev: target phy_device struct
1227 int genphy_restart_aneg(struct phy_device *phydev)
1229 int ctl = phy_read(phydev, MII_BMCR);
1234 ctl |= BMCR_ANENABLE | BMCR_ANRESTART;
1236 /* Don't isolate the PHY if we're negotiating */
1237 ctl &= ~BMCR_ISOLATE;
1239 return phy_write(phydev, MII_BMCR, ctl);
1241 EXPORT_SYMBOL(genphy_restart_aneg);
1244 * genphy_config_aneg - restart auto-negotiation or write BMCR
1245 * @phydev: target phy_device struct
1247 * Description: If auto-negotiation is enabled, we configure the
1248 * advertising, and then restart auto-negotiation. If it is not
1249 * enabled, then we write the BMCR.
1251 int genphy_config_aneg(struct phy_device *phydev)
1255 changed = genphy_config_eee_advert(phydev);
1257 if (AUTONEG_ENABLE != phydev->autoneg)
1258 return genphy_setup_forced(phydev);
1260 err = genphy_config_advert(phydev);
1261 if (err < 0) /* error */
1267 /* Advertisement hasn't changed, but maybe aneg was never on to
1268 * begin with? Or maybe phy was isolated?
1270 int ctl = phy_read(phydev, MII_BMCR);
1275 if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE))
1276 changed = 1; /* do restart aneg */
1279 /* Only restart aneg if we are advertising something different
1280 * than we were before.
1283 return genphy_restart_aneg(phydev);
1287 EXPORT_SYMBOL(genphy_config_aneg);
1290 * genphy_aneg_done - return auto-negotiation status
1291 * @phydev: target phy_device struct
1293 * Description: Reads the status register and returns 0 either if
1294 * auto-negotiation is incomplete, or if there was an error.
1295 * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done.
1297 int genphy_aneg_done(struct phy_device *phydev)
1299 int retval = phy_read(phydev, MII_BMSR);
1301 return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE);
1303 EXPORT_SYMBOL(genphy_aneg_done);
1305 static int gen10g_config_aneg(struct phy_device *phydev)
1311 * genphy_update_link - update link status in @phydev
1312 * @phydev: target phy_device struct
1314 * Description: Update the value in phydev->link to reflect the
1315 * current link value. In order to do this, we need to read
1316 * the status register twice, keeping the second value.
1318 int genphy_update_link(struct phy_device *phydev)
1322 /* Do a fake read */
1323 status = phy_read(phydev, MII_BMSR);
1327 /* Read link and autonegotiation status */
1328 status = phy_read(phydev, MII_BMSR);
1332 if ((status & BMSR_LSTATUS) == 0)
1339 EXPORT_SYMBOL(genphy_update_link);
1342 * genphy_read_status - check the link status and update current link state
1343 * @phydev: target phy_device struct
1345 * Description: Check the link, then figure out the current state
1346 * by comparing what we advertise with what the link partner
1347 * advertises. Start by checking the gigabit possibilities,
1348 * then move on to 10/100.
1350 int genphy_read_status(struct phy_device *phydev)
1357 int common_adv_gb = 0;
1359 /* Update the link, but return if there was an error */
1360 err = genphy_update_link(phydev);
1364 phydev->lp_advertising = 0;
1366 if (AUTONEG_ENABLE == phydev->autoneg) {
1367 if (phydev->supported & (SUPPORTED_1000baseT_Half
1368 | SUPPORTED_1000baseT_Full)) {
1369 lpagb = phy_read(phydev, MII_STAT1000);
1373 adv = phy_read(phydev, MII_CTRL1000);
1377 phydev->lp_advertising =
1378 mii_stat1000_to_ethtool_lpa_t(lpagb);
1379 common_adv_gb = lpagb & adv << 2;
1382 lpa = phy_read(phydev, MII_LPA);
1386 phydev->lp_advertising |= mii_lpa_to_ethtool_lpa_t(lpa);
1388 adv = phy_read(phydev, MII_ADVERTISE);
1392 common_adv = lpa & adv;
1394 phydev->speed = SPEED_10;
1395 phydev->duplex = DUPLEX_HALF;
1397 phydev->asym_pause = 0;
1399 if (common_adv_gb & (LPA_1000FULL | LPA_1000HALF)) {
1400 phydev->speed = SPEED_1000;
1402 if (common_adv_gb & LPA_1000FULL)
1403 phydev->duplex = DUPLEX_FULL;
1404 } else if (common_adv & (LPA_100FULL | LPA_100HALF)) {
1405 phydev->speed = SPEED_100;
1407 if (common_adv & LPA_100FULL)
1408 phydev->duplex = DUPLEX_FULL;
1410 if (common_adv & LPA_10FULL)
1411 phydev->duplex = DUPLEX_FULL;
1413 if (phydev->duplex == DUPLEX_FULL) {
1414 phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;
1415 phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;
1418 int bmcr = phy_read(phydev, MII_BMCR);
1423 if (bmcr & BMCR_FULLDPLX)
1424 phydev->duplex = DUPLEX_FULL;
1426 phydev->duplex = DUPLEX_HALF;
1428 if (bmcr & BMCR_SPEED1000)
1429 phydev->speed = SPEED_1000;
1430 else if (bmcr & BMCR_SPEED100)
1431 phydev->speed = SPEED_100;
1433 phydev->speed = SPEED_10;
1436 phydev->asym_pause = 0;
1441 EXPORT_SYMBOL(genphy_read_status);
1443 static int gen10g_read_status(struct phy_device *phydev)
1446 u32 mmd_mask = phydev->c45_ids.devices_in_package;
1450 /* For now just lie and say it's 10G all the time */
1451 phydev->speed = SPEED_10000;
1452 phydev->duplex = DUPLEX_FULL;
1454 for (devad = 0; mmd_mask; devad++, mmd_mask = mmd_mask >> 1) {
1455 if (!(mmd_mask & 1))
1458 /* Read twice because link state is latched and a
1459 * read moves the current state into the register
1461 phy_read_mmd(phydev, devad, MDIO_STAT1);
1462 reg = phy_read_mmd(phydev, devad, MDIO_STAT1);
1463 if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS))
1471 * genphy_soft_reset - software reset the PHY via BMCR_RESET bit
1472 * @phydev: target phy_device struct
1474 * Description: Perform a software PHY reset using the standard
1475 * BMCR_RESET bit and poll for the reset bit to be cleared.
1477 * Returns: 0 on success, < 0 on failure
1479 int genphy_soft_reset(struct phy_device *phydev)
1483 ret = phy_write(phydev, MII_BMCR, BMCR_RESET);
1487 return phy_poll_reset(phydev);
1489 EXPORT_SYMBOL(genphy_soft_reset);
1491 int genphy_config_init(struct phy_device *phydev)
1496 features = (SUPPORTED_TP | SUPPORTED_MII
1497 | SUPPORTED_AUI | SUPPORTED_FIBRE |
1498 SUPPORTED_BNC | SUPPORTED_Pause | SUPPORTED_Asym_Pause);
1500 /* Do we support autonegotiation? */
1501 val = phy_read(phydev, MII_BMSR);
1505 if (val & BMSR_ANEGCAPABLE)
1506 features |= SUPPORTED_Autoneg;
1508 if (val & BMSR_100FULL)
1509 features |= SUPPORTED_100baseT_Full;
1510 if (val & BMSR_100HALF)
1511 features |= SUPPORTED_100baseT_Half;
1512 if (val & BMSR_10FULL)
1513 features |= SUPPORTED_10baseT_Full;
1514 if (val & BMSR_10HALF)
1515 features |= SUPPORTED_10baseT_Half;
1517 if (val & BMSR_ESTATEN) {
1518 val = phy_read(phydev, MII_ESTATUS);
1522 if (val & ESTATUS_1000_TFULL)
1523 features |= SUPPORTED_1000baseT_Full;
1524 if (val & ESTATUS_1000_THALF)
1525 features |= SUPPORTED_1000baseT_Half;
1528 phydev->supported &= features;
1529 phydev->advertising &= features;
1534 static int gen10g_soft_reset(struct phy_device *phydev)
1536 /* Do nothing for now */
1539 EXPORT_SYMBOL(genphy_config_init);
1541 static int gen10g_config_init(struct phy_device *phydev)
1543 /* Temporarily just say we support everything */
1544 phydev->supported = SUPPORTED_10000baseT_Full;
1545 phydev->advertising = SUPPORTED_10000baseT_Full;
1550 int genphy_suspend(struct phy_device *phydev)
1554 mutex_lock(&phydev->lock);
1556 value = phy_read(phydev, MII_BMCR);
1557 phy_write(phydev, MII_BMCR, value | BMCR_PDOWN);
1559 mutex_unlock(&phydev->lock);
1563 EXPORT_SYMBOL(genphy_suspend);
1565 static int gen10g_suspend(struct phy_device *phydev)
1570 int genphy_resume(struct phy_device *phydev)
1574 mutex_lock(&phydev->lock);
1576 value = phy_read(phydev, MII_BMCR);
1577 phy_write(phydev, MII_BMCR, value & ~BMCR_PDOWN);
1579 mutex_unlock(&phydev->lock);
1583 EXPORT_SYMBOL(genphy_resume);
1585 static int gen10g_resume(struct phy_device *phydev)
1590 static int __set_phy_supported(struct phy_device *phydev, u32 max_speed)
1592 switch (max_speed) {
1594 phydev->supported &= ~PHY_100BT_FEATURES;
1597 phydev->supported &= ~PHY_1000BT_FEATURES;
1608 int phy_set_max_speed(struct phy_device *phydev, u32 max_speed)
1612 err = __set_phy_supported(phydev, max_speed);
1616 phydev->advertising = phydev->supported;
1620 EXPORT_SYMBOL(phy_set_max_speed);
1622 static void of_set_phy_supported(struct phy_device *phydev)
1624 struct device_node *node = phydev->mdio.dev.of_node;
1627 if (!IS_ENABLED(CONFIG_OF_MDIO))
1633 if (!of_property_read_u32(node, "max-speed", &max_speed))
1634 __set_phy_supported(phydev, max_speed);
1637 static void of_set_phy_eee_broken(struct phy_device *phydev)
1639 struct device_node *node = phydev->mdio.dev.of_node;
1642 if (!IS_ENABLED(CONFIG_OF_MDIO))
1648 if (of_property_read_bool(node, "eee-broken-100tx"))
1649 broken |= MDIO_EEE_100TX;
1650 if (of_property_read_bool(node, "eee-broken-1000t"))
1651 broken |= MDIO_EEE_1000T;
1652 if (of_property_read_bool(node, "eee-broken-10gt"))
1653 broken |= MDIO_EEE_10GT;
1654 if (of_property_read_bool(node, "eee-broken-1000kx"))
1655 broken |= MDIO_EEE_1000KX;
1656 if (of_property_read_bool(node, "eee-broken-10gkx4"))
1657 broken |= MDIO_EEE_10GKX4;
1658 if (of_property_read_bool(node, "eee-broken-10gkr"))
1659 broken |= MDIO_EEE_10GKR;
1661 phydev->eee_broken_modes = broken;
1665 * phy_probe - probe and init a PHY device
1666 * @dev: device to probe and init
1668 * Description: Take care of setting up the phy_device structure,
1669 * set the state to READY (the driver's init function should
1670 * set it to STARTING if needed).
1672 static int phy_probe(struct device *dev)
1674 struct phy_device *phydev = to_phy_device(dev);
1675 struct device_driver *drv = phydev->mdio.dev.driver;
1676 struct phy_driver *phydrv = to_phy_driver(drv);
1679 phydev->drv = phydrv;
1681 /* Disable the interrupt if the PHY doesn't support it
1682 * but the interrupt is still a valid one
1684 if (!(phydrv->flags & PHY_HAS_INTERRUPT) &&
1685 phy_interrupt_is_valid(phydev))
1686 phydev->irq = PHY_POLL;
1688 if (phydrv->flags & PHY_IS_INTERNAL)
1689 phydev->is_internal = true;
1691 mutex_lock(&phydev->lock);
1693 /* Start out supporting everything. Eventually,
1694 * a controller will attach, and may modify one
1695 * or both of these values
1697 phydev->supported = phydrv->features;
1698 of_set_phy_supported(phydev);
1699 phydev->advertising = phydev->supported;
1701 /* Get the EEE modes we want to prohibit. We will ask
1702 * the PHY stop advertising these mode later on
1704 of_set_phy_eee_broken(phydev);
1706 /* Set the state to READY by default */
1707 phydev->state = PHY_READY;
1709 if (phydev->drv->probe)
1710 err = phydev->drv->probe(phydev);
1712 mutex_unlock(&phydev->lock);
1717 static int phy_remove(struct device *dev)
1719 struct phy_device *phydev = to_phy_device(dev);
1721 cancel_delayed_work_sync(&phydev->state_queue);
1723 mutex_lock(&phydev->lock);
1724 phydev->state = PHY_DOWN;
1725 mutex_unlock(&phydev->lock);
1727 if (phydev->drv->remove)
1728 phydev->drv->remove(phydev);
1735 * phy_driver_register - register a phy_driver with the PHY layer
1736 * @new_driver: new phy_driver to register
1737 * @owner: module owning this PHY
1739 int phy_driver_register(struct phy_driver *new_driver, struct module *owner)
1743 new_driver->mdiodrv.flags |= MDIO_DEVICE_IS_PHY;
1744 new_driver->mdiodrv.driver.name = new_driver->name;
1745 new_driver->mdiodrv.driver.bus = &mdio_bus_type;
1746 new_driver->mdiodrv.driver.probe = phy_probe;
1747 new_driver->mdiodrv.driver.remove = phy_remove;
1748 new_driver->mdiodrv.driver.owner = owner;
1750 retval = driver_register(&new_driver->mdiodrv.driver);
1752 pr_err("%s: Error %d in registering driver\n",
1753 new_driver->name, retval);
1758 pr_debug("%s: Registered new driver\n", new_driver->name);
1762 EXPORT_SYMBOL(phy_driver_register);
1764 int phy_drivers_register(struct phy_driver *new_driver, int n,
1765 struct module *owner)
1769 for (i = 0; i < n; i++) {
1770 ret = phy_driver_register(new_driver + i, owner);
1773 phy_driver_unregister(new_driver + i);
1779 EXPORT_SYMBOL(phy_drivers_register);
1781 void phy_driver_unregister(struct phy_driver *drv)
1783 driver_unregister(&drv->mdiodrv.driver);
1785 EXPORT_SYMBOL(phy_driver_unregister);
1787 void phy_drivers_unregister(struct phy_driver *drv, int n)
1791 for (i = 0; i < n; i++)
1792 phy_driver_unregister(drv + i);
1794 EXPORT_SYMBOL(phy_drivers_unregister);
1796 static struct phy_driver genphy_driver[] = {
1798 .phy_id = 0xffffffff,
1799 .phy_id_mask = 0xffffffff,
1800 .name = "Generic PHY",
1801 .soft_reset = genphy_no_soft_reset,
1802 .config_init = genphy_config_init,
1803 .features = PHY_GBIT_FEATURES | SUPPORTED_MII |
1804 SUPPORTED_AUI | SUPPORTED_FIBRE |
1806 .config_aneg = genphy_config_aneg,
1807 .aneg_done = genphy_aneg_done,
1808 .read_status = genphy_read_status,
1809 .suspend = genphy_suspend,
1810 .resume = genphy_resume,
1812 .phy_id = 0xffffffff,
1813 .phy_id_mask = 0xffffffff,
1814 .name = "Generic 10G PHY",
1815 .soft_reset = gen10g_soft_reset,
1816 .config_init = gen10g_config_init,
1818 .config_aneg = gen10g_config_aneg,
1819 .read_status = gen10g_read_status,
1820 .suspend = gen10g_suspend,
1821 .resume = gen10g_resume,
1824 static int __init phy_init(void)
1828 rc = mdio_bus_init();
1832 rc = phy_drivers_register(genphy_driver,
1833 ARRAY_SIZE(genphy_driver), THIS_MODULE);
1840 static void __exit phy_exit(void)
1842 phy_drivers_unregister(genphy_driver,
1843 ARRAY_SIZE(genphy_driver));
1847 subsys_initcall(phy_init);
1848 module_exit(phy_exit);