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/bitmap.h>
33 #include <linux/phy.h>
34 #include <linux/phy_led_triggers.h>
35 #include <linux/mdio.h>
37 #include <linux/uaccess.h>
42 MODULE_DESCRIPTION("PHY library");
43 MODULE_AUTHOR("Andy Fleming");
44 MODULE_LICENSE("GPL");
46 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_features
) __ro_after_init
;
47 EXPORT_SYMBOL_GPL(phy_basic_features
);
49 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1_features
) __ro_after_init
;
50 EXPORT_SYMBOL_GPL(phy_basic_t1_features
);
52 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features
) __ro_after_init
;
53 EXPORT_SYMBOL_GPL(phy_gbit_features
);
55 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_fibre_features
) __ro_after_init
;
56 EXPORT_SYMBOL_GPL(phy_gbit_fibre_features
);
58 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_all_ports_features
) __ro_after_init
;
59 EXPORT_SYMBOL_GPL(phy_gbit_all_ports_features
);
61 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_features
) __ro_after_init
;
62 EXPORT_SYMBOL_GPL(phy_10gbit_features
);
64 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_fec_features
) __ro_after_init
;
65 EXPORT_SYMBOL_GPL(phy_10gbit_fec_features
);
67 static const int phy_basic_ports_array
[] = {
68 ETHTOOL_LINK_MODE_Autoneg_BIT
,
69 ETHTOOL_LINK_MODE_TP_BIT
,
70 ETHTOOL_LINK_MODE_MII_BIT
,
72 EXPORT_SYMBOL_GPL(phy_basic_ports_array
);
74 static const int phy_fibre_port_array
[] = {
75 ETHTOOL_LINK_MODE_FIBRE_BIT
,
77 EXPORT_SYMBOL_GPL(phy_fibre_port_array
);
79 static const int phy_all_ports_features_array
[] = {
80 ETHTOOL_LINK_MODE_Autoneg_BIT
,
81 ETHTOOL_LINK_MODE_TP_BIT
,
82 ETHTOOL_LINK_MODE_MII_BIT
,
83 ETHTOOL_LINK_MODE_FIBRE_BIT
,
84 ETHTOOL_LINK_MODE_AUI_BIT
,
85 ETHTOOL_LINK_MODE_BNC_BIT
,
86 ETHTOOL_LINK_MODE_Backplane_BIT
,
88 EXPORT_SYMBOL_GPL(phy_all_ports_features_array
);
90 const int phy_10_100_features_array
[4] = {
91 ETHTOOL_LINK_MODE_10baseT_Half_BIT
,
92 ETHTOOL_LINK_MODE_10baseT_Full_BIT
,
93 ETHTOOL_LINK_MODE_100baseT_Half_BIT
,
94 ETHTOOL_LINK_MODE_100baseT_Full_BIT
,
96 EXPORT_SYMBOL_GPL(phy_10_100_features_array
);
98 const int phy_basic_t1_features_array
[2] = {
99 ETHTOOL_LINK_MODE_TP_BIT
,
100 ETHTOOL_LINK_MODE_100baseT_Full_BIT
,
102 EXPORT_SYMBOL_GPL(phy_basic_t1_features_array
);
104 const int phy_gbit_features_array
[2] = {
105 ETHTOOL_LINK_MODE_1000baseT_Half_BIT
,
106 ETHTOOL_LINK_MODE_1000baseT_Full_BIT
,
108 EXPORT_SYMBOL_GPL(phy_gbit_features_array
);
110 const int phy_10gbit_features_array
[1] = {
111 ETHTOOL_LINK_MODE_10000baseT_Full_BIT
,
113 EXPORT_SYMBOL_GPL(phy_10gbit_features_array
);
115 const int phy_10gbit_fec_features_array
[1] = {
116 ETHTOOL_LINK_MODE_10000baseR_FEC_BIT
,
118 EXPORT_SYMBOL_GPL(phy_10gbit_fec_features_array
);
120 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_full_features
) __ro_after_init
;
121 EXPORT_SYMBOL_GPL(phy_10gbit_full_features
);
123 static const int phy_10gbit_full_features_array
[] = {
124 ETHTOOL_LINK_MODE_10baseT_Full_BIT
,
125 ETHTOOL_LINK_MODE_100baseT_Full_BIT
,
126 ETHTOOL_LINK_MODE_1000baseT_Full_BIT
,
127 ETHTOOL_LINK_MODE_10000baseT_Full_BIT
,
130 static void features_init(void)
132 /* 10/100 half/full*/
133 linkmode_set_bit_array(phy_basic_ports_array
,
134 ARRAY_SIZE(phy_basic_ports_array
),
136 linkmode_set_bit_array(phy_10_100_features_array
,
137 ARRAY_SIZE(phy_10_100_features_array
),
141 linkmode_set_bit_array(phy_basic_t1_features_array
,
142 ARRAY_SIZE(phy_basic_t1_features_array
),
143 phy_basic_t1_features
);
145 /* 10/100 half/full + 1000 half/full */
146 linkmode_set_bit_array(phy_basic_ports_array
,
147 ARRAY_SIZE(phy_basic_ports_array
),
149 linkmode_set_bit_array(phy_10_100_features_array
,
150 ARRAY_SIZE(phy_10_100_features_array
),
152 linkmode_set_bit_array(phy_gbit_features_array
,
153 ARRAY_SIZE(phy_gbit_features_array
),
156 /* 10/100 half/full + 1000 half/full + fibre*/
157 linkmode_set_bit_array(phy_basic_ports_array
,
158 ARRAY_SIZE(phy_basic_ports_array
),
159 phy_gbit_fibre_features
);
160 linkmode_set_bit_array(phy_10_100_features_array
,
161 ARRAY_SIZE(phy_10_100_features_array
),
162 phy_gbit_fibre_features
);
163 linkmode_set_bit_array(phy_gbit_features_array
,
164 ARRAY_SIZE(phy_gbit_features_array
),
165 phy_gbit_fibre_features
);
166 linkmode_set_bit_array(phy_fibre_port_array
,
167 ARRAY_SIZE(phy_fibre_port_array
),
168 phy_gbit_fibre_features
);
170 /* 10/100 half/full + 1000 half/full + TP/MII/FIBRE/AUI/BNC/Backplane*/
171 linkmode_set_bit_array(phy_all_ports_features_array
,
172 ARRAY_SIZE(phy_all_ports_features_array
),
173 phy_gbit_all_ports_features
);
174 linkmode_set_bit_array(phy_10_100_features_array
,
175 ARRAY_SIZE(phy_10_100_features_array
),
176 phy_gbit_all_ports_features
);
177 linkmode_set_bit_array(phy_gbit_features_array
,
178 ARRAY_SIZE(phy_gbit_features_array
),
179 phy_gbit_all_ports_features
);
181 /* 10/100 half/full + 1000 half/full + 10G full*/
182 linkmode_set_bit_array(phy_all_ports_features_array
,
183 ARRAY_SIZE(phy_all_ports_features_array
),
184 phy_10gbit_features
);
185 linkmode_set_bit_array(phy_10_100_features_array
,
186 ARRAY_SIZE(phy_10_100_features_array
),
187 phy_10gbit_features
);
188 linkmode_set_bit_array(phy_gbit_features_array
,
189 ARRAY_SIZE(phy_gbit_features_array
),
190 phy_10gbit_features
);
191 linkmode_set_bit_array(phy_10gbit_features_array
,
192 ARRAY_SIZE(phy_10gbit_features_array
),
193 phy_10gbit_features
);
195 /* 10/100/1000/10G full */
196 linkmode_set_bit_array(phy_all_ports_features_array
,
197 ARRAY_SIZE(phy_all_ports_features_array
),
198 phy_10gbit_full_features
);
199 linkmode_set_bit_array(phy_10gbit_full_features_array
,
200 ARRAY_SIZE(phy_10gbit_full_features_array
),
201 phy_10gbit_full_features
);
203 linkmode_set_bit_array(phy_10gbit_fec_features_array
,
204 ARRAY_SIZE(phy_10gbit_fec_features_array
),
205 phy_10gbit_fec_features
);
208 void phy_device_free(struct phy_device
*phydev
)
210 put_device(&phydev
->mdio
.dev
);
212 EXPORT_SYMBOL(phy_device_free
);
214 static void phy_mdio_device_free(struct mdio_device
*mdiodev
)
216 struct phy_device
*phydev
;
218 phydev
= container_of(mdiodev
, struct phy_device
, mdio
);
219 phy_device_free(phydev
);
222 static void phy_device_release(struct device
*dev
)
224 kfree(to_phy_device(dev
));
227 static void phy_mdio_device_remove(struct mdio_device
*mdiodev
)
229 struct phy_device
*phydev
;
231 phydev
= container_of(mdiodev
, struct phy_device
, mdio
);
232 phy_device_remove(phydev
);
235 static struct phy_driver genphy_driver
;
236 extern struct phy_driver genphy_10g_driver
;
238 static LIST_HEAD(phy_fixup_list
);
239 static DEFINE_MUTEX(phy_fixup_lock
);
242 static bool mdio_bus_phy_may_suspend(struct phy_device
*phydev
)
244 struct device_driver
*drv
= phydev
->mdio
.dev
.driver
;
245 struct phy_driver
*phydrv
= to_phy_driver(drv
);
246 struct net_device
*netdev
= phydev
->attached_dev
;
248 if (!drv
|| !phydrv
->suspend
)
251 /* PHY not attached? May suspend if the PHY has not already been
252 * suspended as part of a prior call to phy_disconnect() ->
253 * phy_detach() -> phy_suspend() because the parent netdev might be the
254 * MDIO bus driver and clock gated at this point.
257 return !phydev
->suspended
;
259 if (netdev
->wol_enabled
)
262 /* As long as not all affected network drivers support the
263 * wol_enabled flag, let's check for hints that WoL is enabled.
264 * Don't suspend PHY if the attached netdev parent may wake up.
265 * The parent may point to a PCI device, as in tg3 driver.
267 if (netdev
->dev
.parent
&& device_may_wakeup(netdev
->dev
.parent
))
270 /* Also don't suspend PHY if the netdev itself may wakeup. This
271 * is the case for devices w/o underlaying pwr. mgmt. aware bus,
274 if (device_may_wakeup(&netdev
->dev
))
280 static int mdio_bus_phy_suspend(struct device
*dev
)
282 struct phy_device
*phydev
= to_phy_device(dev
);
284 /* We must stop the state machine manually, otherwise it stops out of
285 * control, possibly with the phydev->lock held. Upon resume, netdev
286 * may call phy routines that try to grab the same lock, and that may
287 * lead to a deadlock.
289 if (phydev
->attached_dev
&& phydev
->adjust_link
)
290 phy_stop_machine(phydev
);
292 if (!mdio_bus_phy_may_suspend(phydev
))
295 return phy_suspend(phydev
);
298 static int mdio_bus_phy_resume(struct device
*dev
)
300 struct phy_device
*phydev
= to_phy_device(dev
);
303 if (!mdio_bus_phy_may_suspend(phydev
))
306 ret
= phy_resume(phydev
);
311 if (phydev
->attached_dev
&& phydev
->adjust_link
)
312 phy_start_machine(phydev
);
317 static int mdio_bus_phy_restore(struct device
*dev
)
319 struct phy_device
*phydev
= to_phy_device(dev
);
320 struct net_device
*netdev
= phydev
->attached_dev
;
326 ret
= phy_init_hw(phydev
);
330 if (phydev
->attached_dev
&& phydev
->adjust_link
)
331 phy_start_machine(phydev
);
336 static const struct dev_pm_ops mdio_bus_phy_pm_ops
= {
337 .suspend
= mdio_bus_phy_suspend
,
338 .resume
= mdio_bus_phy_resume
,
339 .freeze
= mdio_bus_phy_suspend
,
340 .thaw
= mdio_bus_phy_resume
,
341 .restore
= mdio_bus_phy_restore
,
344 #define MDIO_BUS_PHY_PM_OPS (&mdio_bus_phy_pm_ops)
348 #define MDIO_BUS_PHY_PM_OPS NULL
350 #endif /* CONFIG_PM */
353 * phy_register_fixup - creates a new phy_fixup and adds it to the list
354 * @bus_id: A string which matches phydev->mdio.dev.bus_id (or PHY_ANY_ID)
355 * @phy_uid: Used to match against phydev->phy_id (the UID of the PHY)
356 * It can also be PHY_ANY_UID
357 * @phy_uid_mask: Applied to phydev->phy_id and fixup->phy_uid before
359 * @run: The actual code to be run when a matching PHY is found
361 int phy_register_fixup(const char *bus_id
, u32 phy_uid
, u32 phy_uid_mask
,
362 int (*run
)(struct phy_device
*))
364 struct phy_fixup
*fixup
= kzalloc(sizeof(*fixup
), GFP_KERNEL
);
369 strlcpy(fixup
->bus_id
, bus_id
, sizeof(fixup
->bus_id
));
370 fixup
->phy_uid
= phy_uid
;
371 fixup
->phy_uid_mask
= phy_uid_mask
;
374 mutex_lock(&phy_fixup_lock
);
375 list_add_tail(&fixup
->list
, &phy_fixup_list
);
376 mutex_unlock(&phy_fixup_lock
);
380 EXPORT_SYMBOL(phy_register_fixup
);
382 /* Registers a fixup to be run on any PHY with the UID in phy_uid */
383 int phy_register_fixup_for_uid(u32 phy_uid
, u32 phy_uid_mask
,
384 int (*run
)(struct phy_device
*))
386 return phy_register_fixup(PHY_ANY_ID
, phy_uid
, phy_uid_mask
, run
);
388 EXPORT_SYMBOL(phy_register_fixup_for_uid
);
390 /* Registers a fixup to be run on the PHY with id string bus_id */
391 int phy_register_fixup_for_id(const char *bus_id
,
392 int (*run
)(struct phy_device
*))
394 return phy_register_fixup(bus_id
, PHY_ANY_UID
, 0xffffffff, run
);
396 EXPORT_SYMBOL(phy_register_fixup_for_id
);
399 * phy_unregister_fixup - remove a phy_fixup from the list
400 * @bus_id: A string matches fixup->bus_id (or PHY_ANY_ID) in phy_fixup_list
401 * @phy_uid: A phy id matches fixup->phy_id (or PHY_ANY_UID) in phy_fixup_list
402 * @phy_uid_mask: Applied to phy_uid and fixup->phy_uid before comparison
404 int phy_unregister_fixup(const char *bus_id
, u32 phy_uid
, u32 phy_uid_mask
)
406 struct list_head
*pos
, *n
;
407 struct phy_fixup
*fixup
;
412 mutex_lock(&phy_fixup_lock
);
413 list_for_each_safe(pos
, n
, &phy_fixup_list
) {
414 fixup
= list_entry(pos
, struct phy_fixup
, list
);
416 if ((!strcmp(fixup
->bus_id
, bus_id
)) &&
417 ((fixup
->phy_uid
& phy_uid_mask
) ==
418 (phy_uid
& phy_uid_mask
))) {
419 list_del(&fixup
->list
);
425 mutex_unlock(&phy_fixup_lock
);
429 EXPORT_SYMBOL(phy_unregister_fixup
);
431 /* Unregisters a fixup of any PHY with the UID in phy_uid */
432 int phy_unregister_fixup_for_uid(u32 phy_uid
, u32 phy_uid_mask
)
434 return phy_unregister_fixup(PHY_ANY_ID
, phy_uid
, phy_uid_mask
);
436 EXPORT_SYMBOL(phy_unregister_fixup_for_uid
);
438 /* Unregisters a fixup of the PHY with id string bus_id */
439 int phy_unregister_fixup_for_id(const char *bus_id
)
441 return phy_unregister_fixup(bus_id
, PHY_ANY_UID
, 0xffffffff);
443 EXPORT_SYMBOL(phy_unregister_fixup_for_id
);
445 /* Returns 1 if fixup matches phydev in bus_id and phy_uid.
446 * Fixups can be set to match any in one or more fields.
448 static int phy_needs_fixup(struct phy_device
*phydev
, struct phy_fixup
*fixup
)
450 if (strcmp(fixup
->bus_id
, phydev_name(phydev
)) != 0)
451 if (strcmp(fixup
->bus_id
, PHY_ANY_ID
) != 0)
454 if ((fixup
->phy_uid
& fixup
->phy_uid_mask
) !=
455 (phydev
->phy_id
& fixup
->phy_uid_mask
))
456 if (fixup
->phy_uid
!= PHY_ANY_UID
)
462 /* Runs any matching fixups for this phydev */
463 static int phy_scan_fixups(struct phy_device
*phydev
)
465 struct phy_fixup
*fixup
;
467 mutex_lock(&phy_fixup_lock
);
468 list_for_each_entry(fixup
, &phy_fixup_list
, list
) {
469 if (phy_needs_fixup(phydev
, fixup
)) {
470 int err
= fixup
->run(phydev
);
473 mutex_unlock(&phy_fixup_lock
);
476 phydev
->has_fixups
= true;
479 mutex_unlock(&phy_fixup_lock
);
484 static int phy_bus_match(struct device
*dev
, struct device_driver
*drv
)
486 struct phy_device
*phydev
= to_phy_device(dev
);
487 struct phy_driver
*phydrv
= to_phy_driver(drv
);
488 const int num_ids
= ARRAY_SIZE(phydev
->c45_ids
.device_ids
);
491 if (!(phydrv
->mdiodrv
.flags
& MDIO_DEVICE_IS_PHY
))
494 if (phydrv
->match_phy_device
)
495 return phydrv
->match_phy_device(phydev
);
497 if (phydev
->is_c45
) {
498 for (i
= 1; i
< num_ids
; i
++) {
499 if (!(phydev
->c45_ids
.devices_in_package
& (1 << i
)))
502 if ((phydrv
->phy_id
& phydrv
->phy_id_mask
) ==
503 (phydev
->c45_ids
.device_ids
[i
] &
504 phydrv
->phy_id_mask
))
509 return (phydrv
->phy_id
& phydrv
->phy_id_mask
) ==
510 (phydev
->phy_id
& phydrv
->phy_id_mask
);
515 phy_id_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
517 struct phy_device
*phydev
= to_phy_device(dev
);
519 return sprintf(buf
, "0x%.8lx\n", (unsigned long)phydev
->phy_id
);
521 static DEVICE_ATTR_RO(phy_id
);
524 phy_interface_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
526 struct phy_device
*phydev
= to_phy_device(dev
);
527 const char *mode
= NULL
;
529 if (phy_is_internal(phydev
))
532 mode
= phy_modes(phydev
->interface
);
534 return sprintf(buf
, "%s\n", mode
);
536 static DEVICE_ATTR_RO(phy_interface
);
539 phy_has_fixups_show(struct device
*dev
, struct device_attribute
*attr
,
542 struct phy_device
*phydev
= to_phy_device(dev
);
544 return sprintf(buf
, "%d\n", phydev
->has_fixups
);
546 static DEVICE_ATTR_RO(phy_has_fixups
);
548 static struct attribute
*phy_dev_attrs
[] = {
549 &dev_attr_phy_id
.attr
,
550 &dev_attr_phy_interface
.attr
,
551 &dev_attr_phy_has_fixups
.attr
,
554 ATTRIBUTE_GROUPS(phy_dev
);
556 static const struct device_type mdio_bus_phy_type
= {
558 .groups
= phy_dev_groups
,
559 .release
= phy_device_release
,
560 .pm
= MDIO_BUS_PHY_PM_OPS
,
563 struct phy_device
*phy_device_create(struct mii_bus
*bus
, int addr
, int phy_id
,
565 struct phy_c45_device_ids
*c45_ids
)
567 struct phy_device
*dev
;
568 struct mdio_device
*mdiodev
;
570 /* We allocate the device, and initialize the default values */
571 dev
= kzalloc(sizeof(*dev
), GFP_KERNEL
);
573 return ERR_PTR(-ENOMEM
);
575 mdiodev
= &dev
->mdio
;
576 mdiodev
->dev
.parent
= &bus
->dev
;
577 mdiodev
->dev
.bus
= &mdio_bus_type
;
578 mdiodev
->dev
.type
= &mdio_bus_phy_type
;
580 mdiodev
->bus_match
= phy_bus_match
;
581 mdiodev
->addr
= addr
;
582 mdiodev
->flags
= MDIO_DEVICE_FLAG_PHY
;
583 mdiodev
->device_free
= phy_mdio_device_free
;
584 mdiodev
->device_remove
= phy_mdio_device_remove
;
591 dev
->interface
= PHY_INTERFACE_MODE_GMII
;
593 dev
->autoneg
= AUTONEG_ENABLE
;
595 dev
->is_c45
= is_c45
;
596 dev
->phy_id
= phy_id
;
598 dev
->c45_ids
= *c45_ids
;
599 dev
->irq
= bus
->irq
[addr
];
600 dev_set_name(&mdiodev
->dev
, PHY_ID_FMT
, bus
->id
, addr
);
602 dev
->state
= PHY_DOWN
;
604 mutex_init(&dev
->lock
);
605 INIT_DELAYED_WORK(&dev
->state_queue
, phy_state_machine
);
607 /* Request the appropriate module unconditionally; don't
608 * bother trying to do so only if it isn't already loaded,
609 * because that gets complicated. A hotplug event would have
610 * done an unconditional modprobe anyway.
611 * We don't do normal hotplug because it won't work for MDIO
612 * -- because it relies on the device staying around for long
613 * enough for the driver to get loaded. With MDIO, the NIC
614 * driver will get bored and give up as soon as it finds that
615 * there's no driver _already_ loaded.
617 if (is_c45
&& c45_ids
) {
618 const int num_ids
= ARRAY_SIZE(c45_ids
->device_ids
);
621 for (i
= 1; i
< num_ids
; i
++) {
622 if (!(c45_ids
->devices_in_package
& (1 << i
)))
625 request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT
,
626 MDIO_ID_ARGS(c45_ids
->device_ids
[i
]));
629 request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT
,
630 MDIO_ID_ARGS(phy_id
));
633 device_initialize(&mdiodev
->dev
);
637 EXPORT_SYMBOL(phy_device_create
);
639 /* get_phy_c45_devs_in_pkg - reads a MMD's devices in package registers.
640 * @bus: the target MII bus
641 * @addr: PHY address on the MII bus
642 * @dev_addr: MMD address in the PHY.
643 * @devices_in_package: where to store the devices in package information.
645 * Description: reads devices in package registers of a MMD at @dev_addr
646 * from PHY at @addr on @bus.
648 * Returns: 0 on success, -EIO on failure.
650 static int get_phy_c45_devs_in_pkg(struct mii_bus
*bus
, int addr
, int dev_addr
,
651 u32
*devices_in_package
)
653 int phy_reg
, reg_addr
;
655 reg_addr
= MII_ADDR_C45
| dev_addr
<< 16 | MDIO_DEVS2
;
656 phy_reg
= mdiobus_read(bus
, addr
, reg_addr
);
659 *devices_in_package
= (phy_reg
& 0xffff) << 16;
661 reg_addr
= MII_ADDR_C45
| dev_addr
<< 16 | MDIO_DEVS1
;
662 phy_reg
= mdiobus_read(bus
, addr
, reg_addr
);
665 *devices_in_package
|= (phy_reg
& 0xffff);
671 * get_phy_c45_ids - reads the specified addr for its 802.3-c45 IDs.
672 * @bus: the target MII bus
673 * @addr: PHY address on the MII bus
674 * @phy_id: where to store the ID retrieved.
675 * @c45_ids: where to store the c45 ID information.
677 * If the PHY devices-in-package appears to be valid, it and the
678 * corresponding identifiers are stored in @c45_ids, zero is stored
679 * in @phy_id. Otherwise 0xffffffff is stored in @phy_id. Returns
683 static int get_phy_c45_ids(struct mii_bus
*bus
, int addr
, u32
*phy_id
,
684 struct phy_c45_device_ids
*c45_ids
) {
687 const int num_ids
= ARRAY_SIZE(c45_ids
->device_ids
);
688 u32
*devs
= &c45_ids
->devices_in_package
;
690 /* Find first non-zero Devices In package. Device zero is reserved
691 * for 802.3 c45 complied PHYs, so don't probe it at first.
693 for (i
= 1; i
< num_ids
&& *devs
== 0; i
++) {
694 phy_reg
= get_phy_c45_devs_in_pkg(bus
, addr
, i
, devs
);
698 if ((*devs
& 0x1fffffff) == 0x1fffffff) {
699 /* If mostly Fs, there is no device there,
700 * then let's continue to probe more, as some
701 * 10G PHYs have zero Devices In package,
702 * e.g. Cortina CS4315/CS4340 PHY.
704 phy_reg
= get_phy_c45_devs_in_pkg(bus
, addr
, 0, devs
);
707 /* no device there, let's get out of here */
708 if ((*devs
& 0x1fffffff) == 0x1fffffff) {
709 *phy_id
= 0xffffffff;
717 /* Now probe Device Identifiers for each device present. */
718 for (i
= 1; i
< num_ids
; i
++) {
719 if (!(c45_ids
->devices_in_package
& (1 << i
)))
722 reg_addr
= MII_ADDR_C45
| i
<< 16 | MII_PHYSID1
;
723 phy_reg
= mdiobus_read(bus
, addr
, reg_addr
);
726 c45_ids
->device_ids
[i
] = (phy_reg
& 0xffff) << 16;
728 reg_addr
= MII_ADDR_C45
| i
<< 16 | MII_PHYSID2
;
729 phy_reg
= mdiobus_read(bus
, addr
, reg_addr
);
732 c45_ids
->device_ids
[i
] |= (phy_reg
& 0xffff);
739 * get_phy_id - reads the specified addr for its ID.
740 * @bus: the target MII bus
741 * @addr: PHY address on the MII bus
742 * @phy_id: where to store the ID retrieved.
743 * @is_c45: If true the PHY uses the 802.3 clause 45 protocol
744 * @c45_ids: where to store the c45 ID information.
746 * Description: In the case of a 802.3-c22 PHY, reads the ID registers
747 * of the PHY at @addr on the @bus, stores it in @phy_id and returns
750 * In the case of a 802.3-c45 PHY, get_phy_c45_ids() is invoked, and
751 * its return value is in turn returned.
754 static int get_phy_id(struct mii_bus
*bus
, int addr
, u32
*phy_id
,
755 bool is_c45
, struct phy_c45_device_ids
*c45_ids
)
760 return get_phy_c45_ids(bus
, addr
, phy_id
, c45_ids
);
762 /* Grab the bits from PHYIR1, and put them in the upper half */
763 phy_reg
= mdiobus_read(bus
, addr
, MII_PHYSID1
);
765 /* if there is no device, return without an error so scanning
766 * the bus works properly
768 if (phy_reg
== -EIO
|| phy_reg
== -ENODEV
) {
769 *phy_id
= 0xffffffff;
776 *phy_id
= (phy_reg
& 0xffff) << 16;
778 /* Grab the bits from PHYIR2, and put them in the lower half */
779 phy_reg
= mdiobus_read(bus
, addr
, MII_PHYSID2
);
783 *phy_id
|= (phy_reg
& 0xffff);
789 * get_phy_device - reads the specified PHY device and returns its @phy_device
791 * @bus: the target MII bus
792 * @addr: PHY address on the MII bus
793 * @is_c45: If true the PHY uses the 802.3 clause 45 protocol
795 * Description: Reads the ID registers of the PHY at @addr on the
796 * @bus, then allocates and returns the phy_device to represent it.
798 struct phy_device
*get_phy_device(struct mii_bus
*bus
, int addr
, bool is_c45
)
800 struct phy_c45_device_ids c45_ids
= {0};
804 r
= get_phy_id(bus
, addr
, &phy_id
, is_c45
, &c45_ids
);
808 /* If the phy_id is mostly Fs, there is no device there */
809 if ((phy_id
& 0x1fffffff) == 0x1fffffff)
810 return ERR_PTR(-ENODEV
);
812 return phy_device_create(bus
, addr
, phy_id
, is_c45
, &c45_ids
);
814 EXPORT_SYMBOL(get_phy_device
);
817 * phy_device_register - Register the phy device on the MDIO bus
818 * @phydev: phy_device structure to be added to the MDIO bus
820 int phy_device_register(struct phy_device
*phydev
)
824 err
= mdiobus_register_device(&phydev
->mdio
);
828 /* Deassert the reset signal */
829 phy_device_reset(phydev
, 0);
831 /* Run all of the fixups for this PHY */
832 err
= phy_scan_fixups(phydev
);
834 pr_err("PHY %d failed to initialize\n", phydev
->mdio
.addr
);
838 err
= device_add(&phydev
->mdio
.dev
);
840 pr_err("PHY %d failed to add\n", phydev
->mdio
.addr
);
847 /* Assert the reset signal */
848 phy_device_reset(phydev
, 1);
850 mdiobus_unregister_device(&phydev
->mdio
);
853 EXPORT_SYMBOL(phy_device_register
);
856 * phy_device_remove - Remove a previously registered phy device from the MDIO bus
857 * @phydev: phy_device structure to remove
859 * This doesn't free the phy_device itself, it merely reverses the effects
860 * of phy_device_register(). Use phy_device_free() to free the device
861 * after calling this function.
863 void phy_device_remove(struct phy_device
*phydev
)
865 device_del(&phydev
->mdio
.dev
);
867 /* Assert the reset signal */
868 phy_device_reset(phydev
, 1);
870 mdiobus_unregister_device(&phydev
->mdio
);
872 EXPORT_SYMBOL(phy_device_remove
);
875 * phy_find_first - finds the first PHY device on the bus
876 * @bus: the target MII bus
878 struct phy_device
*phy_find_first(struct mii_bus
*bus
)
880 struct phy_device
*phydev
;
883 for (addr
= 0; addr
< PHY_MAX_ADDR
; addr
++) {
884 phydev
= mdiobus_get_phy(bus
, addr
);
890 EXPORT_SYMBOL(phy_find_first
);
892 static void phy_link_change(struct phy_device
*phydev
, bool up
, bool do_carrier
)
894 struct net_device
*netdev
= phydev
->attached_dev
;
898 netif_carrier_on(netdev
);
900 netif_carrier_off(netdev
);
902 phydev
->adjust_link(netdev
);
906 * phy_prepare_link - prepares the PHY layer to monitor link status
907 * @phydev: target phy_device struct
908 * @handler: callback function for link status change notifications
910 * Description: Tells the PHY infrastructure to handle the
911 * gory details on monitoring link status (whether through
912 * polling or an interrupt), and to call back to the
913 * connected device driver when the link status changes.
914 * If you want to monitor your own link state, don't call
917 static void phy_prepare_link(struct phy_device
*phydev
,
918 void (*handler
)(struct net_device
*))
920 phydev
->adjust_link
= handler
;
924 * phy_connect_direct - connect an ethernet device to a specific phy_device
925 * @dev: the network device to connect
926 * @phydev: the pointer to the phy device
927 * @handler: callback function for state change notifications
928 * @interface: PHY device's interface
930 int phy_connect_direct(struct net_device
*dev
, struct phy_device
*phydev
,
931 void (*handler
)(struct net_device
*),
932 phy_interface_t interface
)
936 rc
= phy_attach_direct(dev
, phydev
, phydev
->dev_flags
, interface
);
940 phy_prepare_link(phydev
, handler
);
941 phy_start_machine(phydev
);
943 phy_start_interrupts(phydev
);
947 EXPORT_SYMBOL(phy_connect_direct
);
950 * phy_connect - connect an ethernet device to a PHY device
951 * @dev: the network device to connect
952 * @bus_id: the id string of the PHY device to connect
953 * @handler: callback function for state change notifications
954 * @interface: PHY device's interface
956 * Description: Convenience function for connecting ethernet
957 * devices to PHY devices. The default behavior is for
958 * the PHY infrastructure to handle everything, and only notify
959 * the connected driver when the link status changes. If you
960 * don't want, or can't use the provided functionality, you may
961 * choose to call only the subset of functions which provide
962 * the desired functionality.
964 struct phy_device
*phy_connect(struct net_device
*dev
, const char *bus_id
,
965 void (*handler
)(struct net_device
*),
966 phy_interface_t interface
)
968 struct phy_device
*phydev
;
972 /* Search the list of PHY devices on the mdio bus for the
973 * PHY with the requested name
975 d
= bus_find_device_by_name(&mdio_bus_type
, NULL
, bus_id
);
977 pr_err("PHY %s not found\n", bus_id
);
978 return ERR_PTR(-ENODEV
);
980 phydev
= to_phy_device(d
);
982 rc
= phy_connect_direct(dev
, phydev
, handler
, interface
);
989 EXPORT_SYMBOL(phy_connect
);
992 * phy_disconnect - disable interrupts, stop state machine, and detach a PHY
994 * @phydev: target phy_device struct
996 void phy_disconnect(struct phy_device
*phydev
)
999 phy_stop_interrupts(phydev
);
1001 phy_stop_machine(phydev
);
1003 phydev
->adjust_link
= NULL
;
1007 EXPORT_SYMBOL(phy_disconnect
);
1010 * phy_poll_reset - Safely wait until a PHY reset has properly completed
1011 * @phydev: The PHY device to poll
1013 * Description: According to IEEE 802.3, Section 2, Subsection 22.2.4.1.1, as
1014 * published in 2008, a PHY reset may take up to 0.5 seconds. The MII BMCR
1015 * register must be polled until the BMCR_RESET bit clears.
1017 * Furthermore, any attempts to write to PHY registers may have no effect
1018 * or even generate MDIO bus errors until this is complete.
1020 * Some PHYs (such as the Marvell 88E1111) don't entirely conform to the
1021 * standard and do not fully reset after the BMCR_RESET bit is set, and may
1022 * even *REQUIRE* a soft-reset to properly restart autonegotiation. In an
1023 * effort to support such broken PHYs, this function is separate from the
1024 * standard phy_init_hw() which will zero all the other bits in the BMCR
1025 * and reapply all driver-specific and board-specific fixups.
1027 static int phy_poll_reset(struct phy_device
*phydev
)
1029 /* Poll until the reset bit clears (50ms per retry == 0.6 sec) */
1030 unsigned int retries
= 12;
1035 ret
= phy_read(phydev
, MII_BMCR
);
1038 } while (ret
& BMCR_RESET
&& --retries
);
1039 if (ret
& BMCR_RESET
)
1042 /* Some chips (smsc911x) may still need up to another 1ms after the
1043 * BMCR_RESET bit is cleared before they are usable.
1049 int phy_init_hw(struct phy_device
*phydev
)
1053 /* Deassert the reset signal */
1054 phy_device_reset(phydev
, 0);
1056 if (!phydev
->drv
|| !phydev
->drv
->config_init
)
1059 if (phydev
->drv
->soft_reset
)
1060 ret
= phydev
->drv
->soft_reset(phydev
);
1065 ret
= phy_scan_fixups(phydev
);
1069 return phydev
->drv
->config_init(phydev
);
1071 EXPORT_SYMBOL(phy_init_hw
);
1073 void phy_attached_info(struct phy_device
*phydev
)
1075 phy_attached_print(phydev
, NULL
);
1077 EXPORT_SYMBOL(phy_attached_info
);
1079 #define ATTACHED_FMT "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%s)"
1080 void phy_attached_print(struct phy_device
*phydev
, const char *fmt
, ...)
1082 const char *drv_name
= phydev
->drv
? phydev
->drv
->name
: "unbound";
1086 switch(phydev
->irq
) {
1090 case PHY_IGNORE_INTERRUPT
:
1094 snprintf(irq_num
, sizeof(irq_num
), "%d", phydev
->irq
);
1101 phydev_info(phydev
, ATTACHED_FMT
"\n",
1102 drv_name
, phydev_name(phydev
),
1107 phydev_info(phydev
, ATTACHED_FMT
,
1108 drv_name
, phydev_name(phydev
),
1116 EXPORT_SYMBOL(phy_attached_print
);
1119 * phy_attach_direct - attach a network device to a given PHY device pointer
1120 * @dev: network device to attach
1121 * @phydev: Pointer to phy_device to attach
1122 * @flags: PHY device's dev_flags
1123 * @interface: PHY device's interface
1125 * Description: Called by drivers to attach to a particular PHY
1126 * device. The phy_device is found, and properly hooked up
1127 * to the phy_driver. If no driver is attached, then a
1128 * generic driver is used. The phy_device is given a ptr to
1129 * the attaching device, and given a callback for link status
1130 * change. The phy_device is returned to the attaching driver.
1131 * This function takes a reference on the phy device.
1133 int phy_attach_direct(struct net_device
*dev
, struct phy_device
*phydev
,
1134 u32 flags
, phy_interface_t interface
)
1136 struct module
*ndev_owner
= dev
->dev
.parent
->driver
->owner
;
1137 struct mii_bus
*bus
= phydev
->mdio
.bus
;
1138 struct device
*d
= &phydev
->mdio
.dev
;
1139 bool using_genphy
= false;
1142 /* For Ethernet device drivers that register their own MDIO bus, we
1143 * will have bus->owner match ndev_mod, so we do not want to increment
1144 * our own module->refcnt here, otherwise we would not be able to
1147 if (ndev_owner
!= bus
->owner
&& !try_module_get(bus
->owner
)) {
1148 dev_err(&dev
->dev
, "failed to get the bus module\n");
1154 /* Assume that if there is no driver, that it doesn't
1155 * exist, and we should use the genphy driver.
1159 d
->driver
= &genphy_10g_driver
.mdiodrv
.driver
;
1161 d
->driver
= &genphy_driver
.mdiodrv
.driver
;
1163 using_genphy
= true;
1166 if (!try_module_get(d
->driver
->owner
)) {
1167 dev_err(&dev
->dev
, "failed to get the device driver module\n");
1169 goto error_put_device
;
1173 err
= d
->driver
->probe(d
);
1175 err
= device_bind_driver(d
);
1178 goto error_module_put
;
1181 if (phydev
->attached_dev
) {
1182 dev_err(&dev
->dev
, "PHY already attached\n");
1187 phydev
->phy_link_change
= phy_link_change
;
1188 phydev
->attached_dev
= dev
;
1189 dev
->phydev
= phydev
;
1191 /* Some Ethernet drivers try to connect to a PHY device before
1192 * calling register_netdevice() -> netdev_register_kobject() and
1193 * does the dev->dev.kobj initialization. Here we only check for
1194 * success which indicates that the network device kobject is
1195 * ready. Once we do that we still need to keep track of whether
1196 * links were successfully set up or not for phy_detach() to
1197 * remove them accordingly.
1199 phydev
->sysfs_links
= false;
1201 err
= sysfs_create_link(&phydev
->mdio
.dev
.kobj
, &dev
->dev
.kobj
,
1204 err
= sysfs_create_link_nowarn(&dev
->dev
.kobj
,
1205 &phydev
->mdio
.dev
.kobj
,
1208 dev_err(&dev
->dev
, "could not add device link to %s err %d\n",
1209 kobject_name(&phydev
->mdio
.dev
.kobj
),
1211 /* non-fatal - some net drivers can use one netdevice
1212 * with more then one phy
1216 phydev
->sysfs_links
= true;
1219 phydev
->dev_flags
= flags
;
1221 phydev
->interface
= interface
;
1223 phydev
->state
= PHY_READY
;
1225 /* Initial carrier state is off as the phy is about to be
1228 netif_carrier_off(phydev
->attached_dev
);
1230 /* Do initial configuration here, now that
1231 * we have certain key parameters
1232 * (dev_flags and interface)
1234 err
= phy_init_hw(phydev
);
1239 phy_led_triggers_register(phydev
);
1244 /* phy_detach() does all of the cleanup below */
1249 module_put(d
->driver
->owner
);
1252 if (ndev_owner
!= bus
->owner
)
1253 module_put(bus
->owner
);
1256 EXPORT_SYMBOL(phy_attach_direct
);
1259 * phy_attach - attach a network device to a particular PHY device
1260 * @dev: network device to attach
1261 * @bus_id: Bus ID of PHY device to attach
1262 * @interface: PHY device's interface
1264 * Description: Same as phy_attach_direct() except that a PHY bus_id
1265 * string is passed instead of a pointer to a struct phy_device.
1267 struct phy_device
*phy_attach(struct net_device
*dev
, const char *bus_id
,
1268 phy_interface_t interface
)
1270 struct bus_type
*bus
= &mdio_bus_type
;
1271 struct phy_device
*phydev
;
1275 /* Search the list of PHY devices on the mdio bus for the
1276 * PHY with the requested name
1278 d
= bus_find_device_by_name(bus
, NULL
, bus_id
);
1280 pr_err("PHY %s not found\n", bus_id
);
1281 return ERR_PTR(-ENODEV
);
1283 phydev
= to_phy_device(d
);
1285 rc
= phy_attach_direct(dev
, phydev
, phydev
->dev_flags
, interface
);
1292 EXPORT_SYMBOL(phy_attach
);
1295 * phy_detach - detach a PHY device from its network device
1296 * @phydev: target phy_device struct
1298 * This detaches the phy device from its network device and the phy
1299 * driver, and drops the reference count taken in phy_attach_direct().
1301 void phy_detach(struct phy_device
*phydev
)
1303 struct net_device
*dev
= phydev
->attached_dev
;
1304 struct module
*ndev_owner
= dev
->dev
.parent
->driver
->owner
;
1305 struct mii_bus
*bus
;
1307 if (phydev
->sysfs_links
) {
1308 sysfs_remove_link(&dev
->dev
.kobj
, "phydev");
1309 sysfs_remove_link(&phydev
->mdio
.dev
.kobj
, "attached_dev");
1311 phy_suspend(phydev
);
1312 phydev
->attached_dev
->phydev
= NULL
;
1313 phydev
->attached_dev
= NULL
;
1314 phydev
->phylink
= NULL
;
1316 phy_led_triggers_unregister(phydev
);
1318 module_put(phydev
->mdio
.dev
.driver
->owner
);
1320 /* If the device had no specific driver before (i.e. - it
1321 * was using the generic driver), we unbind the device
1322 * from the generic driver so that there's a chance a
1323 * real driver could be loaded
1325 if (phydev
->mdio
.dev
.driver
== &genphy_10g_driver
.mdiodrv
.driver
||
1326 phydev
->mdio
.dev
.driver
== &genphy_driver
.mdiodrv
.driver
)
1327 device_release_driver(&phydev
->mdio
.dev
);
1330 * The phydev might go away on the put_device() below, so avoid
1331 * a use-after-free bug by reading the underlying bus first.
1333 bus
= phydev
->mdio
.bus
;
1335 put_device(&phydev
->mdio
.dev
);
1336 if (ndev_owner
!= bus
->owner
)
1337 module_put(bus
->owner
);
1339 /* Assert the reset signal */
1340 phy_device_reset(phydev
, 1);
1342 EXPORT_SYMBOL(phy_detach
);
1344 int phy_suspend(struct phy_device
*phydev
)
1346 struct phy_driver
*phydrv
= to_phy_driver(phydev
->mdio
.dev
.driver
);
1347 struct net_device
*netdev
= phydev
->attached_dev
;
1348 struct ethtool_wolinfo wol
= { .cmd
= ETHTOOL_GWOL
};
1351 /* If the device has WOL enabled, we cannot suspend the PHY */
1352 phy_ethtool_get_wol(phydev
, &wol
);
1353 if (wol
.wolopts
|| (netdev
&& netdev
->wol_enabled
))
1356 if (phydev
->drv
&& phydrv
->suspend
)
1357 ret
= phydrv
->suspend(phydev
);
1362 phydev
->suspended
= true;
1366 EXPORT_SYMBOL(phy_suspend
);
1368 int __phy_resume(struct phy_device
*phydev
)
1370 struct phy_driver
*phydrv
= to_phy_driver(phydev
->mdio
.dev
.driver
);
1373 WARN_ON(!mutex_is_locked(&phydev
->lock
));
1375 if (phydev
->drv
&& phydrv
->resume
)
1376 ret
= phydrv
->resume(phydev
);
1381 phydev
->suspended
= false;
1385 EXPORT_SYMBOL(__phy_resume
);
1387 int phy_resume(struct phy_device
*phydev
)
1391 mutex_lock(&phydev
->lock
);
1392 ret
= __phy_resume(phydev
);
1393 mutex_unlock(&phydev
->lock
);
1397 EXPORT_SYMBOL(phy_resume
);
1399 int phy_loopback(struct phy_device
*phydev
, bool enable
)
1401 struct phy_driver
*phydrv
= to_phy_driver(phydev
->mdio
.dev
.driver
);
1404 mutex_lock(&phydev
->lock
);
1406 if (enable
&& phydev
->loopback_enabled
) {
1411 if (!enable
&& !phydev
->loopback_enabled
) {
1416 if (phydev
->drv
&& phydrv
->set_loopback
)
1417 ret
= phydrv
->set_loopback(phydev
, enable
);
1424 phydev
->loopback_enabled
= enable
;
1427 mutex_unlock(&phydev
->lock
);
1430 EXPORT_SYMBOL(phy_loopback
);
1433 * phy_reset_after_clk_enable - perform a PHY reset if needed
1434 * @phydev: target phy_device struct
1436 * Description: Some PHYs are known to need a reset after their refclk was
1437 * enabled. This function evaluates the flags and perform the reset if it's
1438 * needed. Returns < 0 on error, 0 if the phy wasn't reset and 1 if the phy
1441 int phy_reset_after_clk_enable(struct phy_device
*phydev
)
1443 if (!phydev
|| !phydev
->drv
)
1446 if (phydev
->drv
->flags
& PHY_RST_AFTER_CLK_EN
) {
1447 phy_device_reset(phydev
, 1);
1448 phy_device_reset(phydev
, 0);
1454 EXPORT_SYMBOL(phy_reset_after_clk_enable
);
1456 /* Generic PHY support and helper functions */
1459 * genphy_config_advert - sanitize and advertise auto-negotiation parameters
1460 * @phydev: target phy_device struct
1462 * Description: Writes MII_ADVERTISE with the appropriate values,
1463 * after sanitizing the values to make sure we only advertise
1464 * what is supported. Returns < 0 on error, 0 if the PHY's advertisement
1465 * hasn't changed, and > 0 if it has changed.
1467 static int genphy_config_advert(struct phy_device
*phydev
)
1470 int oldadv
, adv
, bmsr
;
1471 int err
, changed
= 0;
1473 /* Only allow advertising what this PHY supports */
1474 linkmode_and(phydev
->advertising
, phydev
->advertising
,
1476 if (!ethtool_convert_link_mode_to_legacy_u32(&advertise
,
1477 phydev
->advertising
))
1478 phydev_warn(phydev
, "PHY advertising (%*pb) more modes than genphy supports, some modes not advertised.\n",
1479 __ETHTOOL_LINK_MODE_MASK_NBITS
,
1480 phydev
->advertising
);
1482 /* Setup standard advertisement */
1483 adv
= phy_read(phydev
, MII_ADVERTISE
);
1488 adv
&= ~(ADVERTISE_ALL
| ADVERTISE_100BASE4
| ADVERTISE_PAUSE_CAP
|
1489 ADVERTISE_PAUSE_ASYM
);
1490 adv
|= ethtool_adv_to_mii_adv_t(advertise
);
1492 if (adv
!= oldadv
) {
1493 err
= phy_write(phydev
, MII_ADVERTISE
, adv
);
1500 bmsr
= phy_read(phydev
, MII_BMSR
);
1504 /* Per 802.3-2008, Section 22.2.4.2.16 Extended status all
1505 * 1000Mbits/sec capable PHYs shall have the BMSR_ESTATEN bit set to a
1508 if (!(bmsr
& BMSR_ESTATEN
))
1511 /* Configure gigabit if it's supported */
1512 adv
= phy_read(phydev
, MII_CTRL1000
);
1517 adv
&= ~(ADVERTISE_1000FULL
| ADVERTISE_1000HALF
);
1519 if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT
,
1520 phydev
->supported
) ||
1521 linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT
,
1523 adv
|= ethtool_adv_to_mii_ctrl1000_t(advertise
);
1528 err
= phy_write(phydev
, MII_CTRL1000
, adv
);
1536 * genphy_config_eee_advert - disable unwanted eee mode advertisement
1537 * @phydev: target phy_device struct
1539 * Description: Writes MDIO_AN_EEE_ADV after disabling unsupported energy
1540 * efficent ethernet modes. Returns 0 if the PHY's advertisement hasn't
1541 * changed, and 1 if it has changed.
1543 static int genphy_config_eee_advert(struct phy_device
*phydev
)
1545 int broken
= phydev
->eee_broken_modes
;
1548 /* Nothing to disable */
1552 /* If the following call fails, we assume that EEE is not
1553 * supported by the phy. If we read 0, EEE is not advertised
1554 * In both case, we don't need to continue
1556 adv
= phy_read_mmd(phydev
, MDIO_MMD_AN
, MDIO_AN_EEE_ADV
);
1563 /* Advertising remains unchanged with the broken mask */
1567 phy_write_mmd(phydev
, MDIO_MMD_AN
, MDIO_AN_EEE_ADV
, adv
);
1573 * genphy_setup_forced - configures/forces speed/duplex from @phydev
1574 * @phydev: target phy_device struct
1576 * Description: Configures MII_BMCR to force speed/duplex
1577 * to the values in phydev. Assumes that the values are valid.
1578 * Please see phy_sanitize_settings().
1580 int genphy_setup_forced(struct phy_device
*phydev
)
1585 phydev
->asym_pause
= 0;
1587 if (SPEED_1000
== phydev
->speed
)
1588 ctl
|= BMCR_SPEED1000
;
1589 else if (SPEED_100
== phydev
->speed
)
1590 ctl
|= BMCR_SPEED100
;
1592 if (DUPLEX_FULL
== phydev
->duplex
)
1593 ctl
|= BMCR_FULLDPLX
;
1595 return phy_modify(phydev
, MII_BMCR
,
1596 ~(BMCR_LOOPBACK
| BMCR_ISOLATE
| BMCR_PDOWN
), ctl
);
1598 EXPORT_SYMBOL(genphy_setup_forced
);
1601 * genphy_restart_aneg - Enable and Restart Autonegotiation
1602 * @phydev: target phy_device struct
1604 int genphy_restart_aneg(struct phy_device
*phydev
)
1606 /* Don't isolate the PHY if we're negotiating */
1607 return phy_modify(phydev
, MII_BMCR
, BMCR_ISOLATE
,
1608 BMCR_ANENABLE
| BMCR_ANRESTART
);
1610 EXPORT_SYMBOL(genphy_restart_aneg
);
1613 * genphy_config_aneg - restart auto-negotiation or write BMCR
1614 * @phydev: target phy_device struct
1616 * Description: If auto-negotiation is enabled, we configure the
1617 * advertising, and then restart auto-negotiation. If it is not
1618 * enabled, then we write the BMCR.
1620 int genphy_config_aneg(struct phy_device
*phydev
)
1624 changed
= genphy_config_eee_advert(phydev
);
1626 if (AUTONEG_ENABLE
!= phydev
->autoneg
)
1627 return genphy_setup_forced(phydev
);
1629 err
= genphy_config_advert(phydev
);
1630 if (err
< 0) /* error */
1636 /* Advertisement hasn't changed, but maybe aneg was never on to
1637 * begin with? Or maybe phy was isolated?
1639 int ctl
= phy_read(phydev
, MII_BMCR
);
1644 if (!(ctl
& BMCR_ANENABLE
) || (ctl
& BMCR_ISOLATE
))
1645 changed
= 1; /* do restart aneg */
1648 /* Only restart aneg if we are advertising something different
1649 * than we were before.
1652 return genphy_restart_aneg(phydev
);
1656 EXPORT_SYMBOL(genphy_config_aneg
);
1659 * genphy_aneg_done - return auto-negotiation status
1660 * @phydev: target phy_device struct
1662 * Description: Reads the status register and returns 0 either if
1663 * auto-negotiation is incomplete, or if there was an error.
1664 * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done.
1666 int genphy_aneg_done(struct phy_device
*phydev
)
1668 int retval
= phy_read(phydev
, MII_BMSR
);
1670 return (retval
< 0) ? retval
: (retval
& BMSR_ANEGCOMPLETE
);
1672 EXPORT_SYMBOL(genphy_aneg_done
);
1675 * genphy_update_link - update link status in @phydev
1676 * @phydev: target phy_device struct
1678 * Description: Update the value in phydev->link to reflect the
1679 * current link value. In order to do this, we need to read
1680 * the status register twice, keeping the second value.
1682 int genphy_update_link(struct phy_device
*phydev
)
1686 /* Do a fake read */
1687 status
= phy_read(phydev
, MII_BMSR
);
1691 /* Read link and autonegotiation status */
1692 status
= phy_read(phydev
, MII_BMSR
);
1696 if ((status
& BMSR_LSTATUS
) == 0)
1703 EXPORT_SYMBOL(genphy_update_link
);
1706 * genphy_read_status - check the link status and update current link state
1707 * @phydev: target phy_device struct
1709 * Description: Check the link, then figure out the current state
1710 * by comparing what we advertise with what the link partner
1711 * advertises. Start by checking the gigabit possibilities,
1712 * then move on to 10/100.
1714 int genphy_read_status(struct phy_device
*phydev
)
1721 int common_adv_gb
= 0;
1723 /* Update the link, but return if there was an error */
1724 err
= genphy_update_link(phydev
);
1728 linkmode_zero(phydev
->lp_advertising
);
1730 if (AUTONEG_ENABLE
== phydev
->autoneg
) {
1731 if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT
,
1732 phydev
->supported
) ||
1733 linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT
,
1734 phydev
->supported
)) {
1735 lpagb
= phy_read(phydev
, MII_STAT1000
);
1739 adv
= phy_read(phydev
, MII_CTRL1000
);
1743 if (lpagb
& LPA_1000MSFAIL
) {
1744 if (adv
& CTL1000_ENABLE_MASTER
)
1745 phydev_err(phydev
, "Master/Slave resolution failed, maybe conflicting manual settings?\n");
1747 phydev_err(phydev
, "Master/Slave resolution failed\n");
1751 mii_stat1000_mod_linkmode_lpa_t(phydev
->lp_advertising
,
1753 common_adv_gb
= lpagb
& adv
<< 2;
1756 lpa
= phy_read(phydev
, MII_LPA
);
1760 mii_lpa_mod_linkmode_lpa_t(phydev
->lp_advertising
, lpa
);
1762 adv
= phy_read(phydev
, MII_ADVERTISE
);
1766 common_adv
= lpa
& adv
;
1768 phydev
->speed
= SPEED_10
;
1769 phydev
->duplex
= DUPLEX_HALF
;
1771 phydev
->asym_pause
= 0;
1773 if (common_adv_gb
& (LPA_1000FULL
| LPA_1000HALF
)) {
1774 phydev
->speed
= SPEED_1000
;
1776 if (common_adv_gb
& LPA_1000FULL
)
1777 phydev
->duplex
= DUPLEX_FULL
;
1778 } else if (common_adv
& (LPA_100FULL
| LPA_100HALF
)) {
1779 phydev
->speed
= SPEED_100
;
1781 if (common_adv
& LPA_100FULL
)
1782 phydev
->duplex
= DUPLEX_FULL
;
1784 if (common_adv
& LPA_10FULL
)
1785 phydev
->duplex
= DUPLEX_FULL
;
1787 if (phydev
->duplex
== DUPLEX_FULL
) {
1788 phydev
->pause
= lpa
& LPA_PAUSE_CAP
? 1 : 0;
1789 phydev
->asym_pause
= lpa
& LPA_PAUSE_ASYM
? 1 : 0;
1792 int bmcr
= phy_read(phydev
, MII_BMCR
);
1797 if (bmcr
& BMCR_FULLDPLX
)
1798 phydev
->duplex
= DUPLEX_FULL
;
1800 phydev
->duplex
= DUPLEX_HALF
;
1802 if (bmcr
& BMCR_SPEED1000
)
1803 phydev
->speed
= SPEED_1000
;
1804 else if (bmcr
& BMCR_SPEED100
)
1805 phydev
->speed
= SPEED_100
;
1807 phydev
->speed
= SPEED_10
;
1810 phydev
->asym_pause
= 0;
1815 EXPORT_SYMBOL(genphy_read_status
);
1818 * genphy_soft_reset - software reset the PHY via BMCR_RESET bit
1819 * @phydev: target phy_device struct
1821 * Description: Perform a software PHY reset using the standard
1822 * BMCR_RESET bit and poll for the reset bit to be cleared.
1824 * Returns: 0 on success, < 0 on failure
1826 int genphy_soft_reset(struct phy_device
*phydev
)
1830 ret
= phy_write(phydev
, MII_BMCR
, BMCR_RESET
);
1834 return phy_poll_reset(phydev
);
1836 EXPORT_SYMBOL(genphy_soft_reset
);
1838 int genphy_config_init(struct phy_device
*phydev
)
1841 __ETHTOOL_DECLARE_LINK_MODE_MASK(features
) = { 0, };
1843 linkmode_set_bit_array(phy_basic_ports_array
,
1844 ARRAY_SIZE(phy_basic_ports_array
),
1846 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT
, features
);
1847 linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
, features
);
1849 /* Do we support autonegotiation? */
1850 val
= phy_read(phydev
, MII_BMSR
);
1854 if (val
& BMSR_ANEGCAPABLE
)
1855 linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT
, features
);
1857 if (val
& BMSR_100FULL
)
1858 linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT
, features
);
1859 if (val
& BMSR_100HALF
)
1860 linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT
, features
);
1861 if (val
& BMSR_10FULL
)
1862 linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT
, features
);
1863 if (val
& BMSR_10HALF
)
1864 linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT
, features
);
1866 if (val
& BMSR_ESTATEN
) {
1867 val
= phy_read(phydev
, MII_ESTATUS
);
1871 if (val
& ESTATUS_1000_TFULL
)
1872 linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT
,
1874 if (val
& ESTATUS_1000_THALF
)
1875 linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT
,
1879 linkmode_and(phydev
->supported
, phydev
->supported
, features
);
1880 linkmode_and(phydev
->advertising
, phydev
->advertising
, features
);
1884 EXPORT_SYMBOL(genphy_config_init
);
1886 /* This is used for the phy device which doesn't support the MMD extended
1887 * register access, but it does have side effect when we are trying to access
1888 * the MMD register via indirect method.
1890 int genphy_read_mmd_unsupported(struct phy_device
*phdev
, int devad
, u16 regnum
)
1894 EXPORT_SYMBOL(genphy_read_mmd_unsupported
);
1896 int genphy_write_mmd_unsupported(struct phy_device
*phdev
, int devnum
,
1897 u16 regnum
, u16 val
)
1901 EXPORT_SYMBOL(genphy_write_mmd_unsupported
);
1903 int genphy_suspend(struct phy_device
*phydev
)
1905 return phy_set_bits(phydev
, MII_BMCR
, BMCR_PDOWN
);
1907 EXPORT_SYMBOL(genphy_suspend
);
1909 int genphy_resume(struct phy_device
*phydev
)
1911 return phy_clear_bits(phydev
, MII_BMCR
, BMCR_PDOWN
);
1913 EXPORT_SYMBOL(genphy_resume
);
1915 int genphy_loopback(struct phy_device
*phydev
, bool enable
)
1917 return phy_modify(phydev
, MII_BMCR
, BMCR_LOOPBACK
,
1918 enable
? BMCR_LOOPBACK
: 0);
1920 EXPORT_SYMBOL(genphy_loopback
);
1922 static int __set_phy_supported(struct phy_device
*phydev
, u32 max_speed
)
1924 switch (max_speed
) {
1926 linkmode_clear_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT
,
1928 linkmode_clear_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT
,
1932 linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT
,
1934 linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT
,
1946 int phy_set_max_speed(struct phy_device
*phydev
, u32 max_speed
)
1950 err
= __set_phy_supported(phydev
, max_speed
);
1954 linkmode_copy(phydev
->advertising
, phydev
->supported
);
1958 EXPORT_SYMBOL(phy_set_max_speed
);
1961 * phy_remove_link_mode - Remove a supported link mode
1962 * @phydev: phy_device structure to remove link mode from
1963 * @link_mode: Link mode to be removed
1965 * Description: Some MACs don't support all link modes which the PHY
1966 * does. e.g. a 1G MAC often does not support 1000Half. Add a helper
1967 * to remove a link mode.
1969 void phy_remove_link_mode(struct phy_device
*phydev
, u32 link_mode
)
1971 linkmode_clear_bit(link_mode
, phydev
->supported
);
1972 linkmode_copy(phydev
->advertising
, phydev
->supported
);
1974 EXPORT_SYMBOL(phy_remove_link_mode
);
1977 * phy_support_sym_pause - Enable support of symmetrical pause
1978 * @phydev: target phy_device struct
1980 * Description: Called by the MAC to indicate is supports symmetrical
1981 * Pause, but not asym pause.
1983 void phy_support_sym_pause(struct phy_device
*phydev
)
1985 linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
, phydev
->supported
);
1986 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT
, phydev
->supported
);
1987 linkmode_copy(phydev
->advertising
, phydev
->supported
);
1989 EXPORT_SYMBOL(phy_support_sym_pause
);
1992 * phy_support_asym_pause - Enable support of asym pause
1993 * @phydev: target phy_device struct
1995 * Description: Called by the MAC to indicate is supports Asym Pause.
1997 void phy_support_asym_pause(struct phy_device
*phydev
)
1999 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT
, phydev
->supported
);
2000 linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
, phydev
->supported
);
2001 linkmode_copy(phydev
->advertising
, phydev
->supported
);
2003 EXPORT_SYMBOL(phy_support_asym_pause
);
2006 * phy_set_sym_pause - Configure symmetric Pause
2007 * @phydev: target phy_device struct
2008 * @rx: Receiver Pause is supported
2009 * @tx: Transmit Pause is supported
2010 * @autoneg: Auto neg should be used
2012 * Description: Configure advertised Pause support depending on if
2013 * receiver pause and pause auto neg is supported. Generally called
2014 * from the set_pauseparam .ndo.
2016 void phy_set_sym_pause(struct phy_device
*phydev
, bool rx
, bool tx
,
2019 linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT
, phydev
->supported
);
2021 if (rx
&& tx
&& autoneg
)
2022 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT
,
2025 linkmode_copy(phydev
->advertising
, phydev
->supported
);
2027 EXPORT_SYMBOL(phy_set_sym_pause
);
2030 * phy_set_asym_pause - Configure Pause and Asym Pause
2031 * @phydev: target phy_device struct
2032 * @rx: Receiver Pause is supported
2033 * @tx: Transmit Pause is supported
2035 * Description: Configure advertised Pause support depending on if
2036 * transmit and receiver pause is supported. If there has been a
2037 * change in adverting, trigger a new autoneg. Generally called from
2038 * the set_pauseparam .ndo.
2040 void phy_set_asym_pause(struct phy_device
*phydev
, bool rx
, bool tx
)
2042 __ETHTOOL_DECLARE_LINK_MODE_MASK(oldadv
);
2044 linkmode_copy(oldadv
, phydev
->advertising
);
2046 linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT
,
2047 phydev
->advertising
);
2048 linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
,
2049 phydev
->advertising
);
2052 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT
,
2053 phydev
->advertising
);
2054 linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
,
2055 phydev
->advertising
);
2059 linkmode_change_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
,
2060 phydev
->advertising
);
2062 if (!linkmode_equal(oldadv
, phydev
->advertising
) &&
2064 phy_start_aneg(phydev
);
2066 EXPORT_SYMBOL(phy_set_asym_pause
);
2069 * phy_validate_pause - Test if the PHY/MAC support the pause configuration
2070 * @phydev: phy_device struct
2071 * @pp: requested pause configuration
2073 * Description: Test if the PHY/MAC combination supports the Pause
2074 * configuration the user is requesting. Returns True if it is
2075 * supported, false otherwise.
2077 bool phy_validate_pause(struct phy_device
*phydev
,
2078 struct ethtool_pauseparam
*pp
)
2080 if (!linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT
,
2081 phydev
->supported
) ||
2082 (!linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
,
2083 phydev
->supported
) &&
2084 pp
->rx_pause
!= pp
->tx_pause
))
2088 EXPORT_SYMBOL(phy_validate_pause
);
2090 static void of_set_phy_supported(struct phy_device
*phydev
)
2092 struct device_node
*node
= phydev
->mdio
.dev
.of_node
;
2095 if (!IS_ENABLED(CONFIG_OF_MDIO
))
2101 if (!of_property_read_u32(node
, "max-speed", &max_speed
))
2102 __set_phy_supported(phydev
, max_speed
);
2105 static void of_set_phy_eee_broken(struct phy_device
*phydev
)
2107 struct device_node
*node
= phydev
->mdio
.dev
.of_node
;
2110 if (!IS_ENABLED(CONFIG_OF_MDIO
))
2116 if (of_property_read_bool(node
, "eee-broken-100tx"))
2117 broken
|= MDIO_EEE_100TX
;
2118 if (of_property_read_bool(node
, "eee-broken-1000t"))
2119 broken
|= MDIO_EEE_1000T
;
2120 if (of_property_read_bool(node
, "eee-broken-10gt"))
2121 broken
|= MDIO_EEE_10GT
;
2122 if (of_property_read_bool(node
, "eee-broken-1000kx"))
2123 broken
|= MDIO_EEE_1000KX
;
2124 if (of_property_read_bool(node
, "eee-broken-10gkx4"))
2125 broken
|= MDIO_EEE_10GKX4
;
2126 if (of_property_read_bool(node
, "eee-broken-10gkr"))
2127 broken
|= MDIO_EEE_10GKR
;
2129 phydev
->eee_broken_modes
= broken
;
2132 static bool phy_drv_supports_irq(struct phy_driver
*phydrv
)
2134 return phydrv
->config_intr
&& phydrv
->ack_interrupt
;
2138 * phy_probe - probe and init a PHY device
2139 * @dev: device to probe and init
2141 * Description: Take care of setting up the phy_device structure,
2142 * set the state to READY (the driver's init function should
2143 * set it to STARTING if needed).
2145 static int phy_probe(struct device
*dev
)
2147 struct phy_device
*phydev
= to_phy_device(dev
);
2148 struct device_driver
*drv
= phydev
->mdio
.dev
.driver
;
2149 struct phy_driver
*phydrv
= to_phy_driver(drv
);
2152 phydev
->drv
= phydrv
;
2154 /* Disable the interrupt if the PHY doesn't support it
2155 * but the interrupt is still a valid one
2157 if (!phy_drv_supports_irq(phydrv
) && phy_interrupt_is_valid(phydev
))
2158 phydev
->irq
= PHY_POLL
;
2160 if (phydrv
->flags
& PHY_IS_INTERNAL
)
2161 phydev
->is_internal
= true;
2163 mutex_lock(&phydev
->lock
);
2165 /* Start out supporting everything. Eventually,
2166 * a controller will attach, and may modify one
2167 * or both of these values
2169 linkmode_copy(phydev
->supported
, phydrv
->features
);
2170 of_set_phy_supported(phydev
);
2171 linkmode_copy(phydev
->advertising
, phydev
->supported
);
2173 /* Get the EEE modes we want to prohibit. We will ask
2174 * the PHY stop advertising these mode later on
2176 of_set_phy_eee_broken(phydev
);
2178 /* The Pause Frame bits indicate that the PHY can support passing
2179 * pause frames. During autonegotiation, the PHYs will determine if
2180 * they should allow pause frames to pass. The MAC driver should then
2181 * use that result to determine whether to enable flow control via
2184 * Normally, PHY drivers should not set the Pause bits, and instead
2185 * allow phylib to do that. However, there may be some situations
2186 * (e.g. hardware erratum) where the driver wants to set only one
2189 if (test_bit(ETHTOOL_LINK_MODE_Pause_BIT
, phydrv
->features
) ||
2190 test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
, phydrv
->features
)) {
2191 linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT
,
2193 linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
,
2195 if (test_bit(ETHTOOL_LINK_MODE_Pause_BIT
, phydrv
->features
))
2196 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT
,
2198 if (test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
,
2200 linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
,
2203 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT
,
2205 linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT
,
2209 /* Set the state to READY by default */
2210 phydev
->state
= PHY_READY
;
2212 if (phydev
->drv
->probe
) {
2213 /* Deassert the reset signal */
2214 phy_device_reset(phydev
, 0);
2216 err
= phydev
->drv
->probe(phydev
);
2218 /* Assert the reset signal */
2219 phy_device_reset(phydev
, 1);
2223 mutex_unlock(&phydev
->lock
);
2228 static int phy_remove(struct device
*dev
)
2230 struct phy_device
*phydev
= to_phy_device(dev
);
2232 cancel_delayed_work_sync(&phydev
->state_queue
);
2234 mutex_lock(&phydev
->lock
);
2235 phydev
->state
= PHY_DOWN
;
2236 mutex_unlock(&phydev
->lock
);
2238 if (phydev
->drv
&& phydev
->drv
->remove
) {
2239 phydev
->drv
->remove(phydev
);
2241 /* Assert the reset signal */
2242 phy_device_reset(phydev
, 1);
2250 * phy_driver_register - register a phy_driver with the PHY layer
2251 * @new_driver: new phy_driver to register
2252 * @owner: module owning this PHY
2254 int phy_driver_register(struct phy_driver
*new_driver
, struct module
*owner
)
2258 if (WARN_ON(!new_driver
->features
)) {
2259 pr_err("%s: Driver features are missing\n", new_driver
->name
);
2263 new_driver
->mdiodrv
.flags
|= MDIO_DEVICE_IS_PHY
;
2264 new_driver
->mdiodrv
.driver
.name
= new_driver
->name
;
2265 new_driver
->mdiodrv
.driver
.bus
= &mdio_bus_type
;
2266 new_driver
->mdiodrv
.driver
.probe
= phy_probe
;
2267 new_driver
->mdiodrv
.driver
.remove
= phy_remove
;
2268 new_driver
->mdiodrv
.driver
.owner
= owner
;
2270 /* The following works around an issue where the PHY driver doesn't bind
2271 * to the device, resulting in the genphy driver being used instead of
2272 * the dedicated driver. The root cause of the issue isn't known yet
2273 * and seems to be in the base driver core. Once this is fixed we may
2274 * remove this workaround.
2276 new_driver
->mdiodrv
.driver
.probe_type
= PROBE_FORCE_SYNCHRONOUS
;
2278 retval
= driver_register(&new_driver
->mdiodrv
.driver
);
2280 pr_err("%s: Error %d in registering driver\n",
2281 new_driver
->name
, retval
);
2286 pr_debug("%s: Registered new driver\n", new_driver
->name
);
2290 EXPORT_SYMBOL(phy_driver_register
);
2292 int phy_drivers_register(struct phy_driver
*new_driver
, int n
,
2293 struct module
*owner
)
2297 for (i
= 0; i
< n
; i
++) {
2298 ret
= phy_driver_register(new_driver
+ i
, owner
);
2301 phy_driver_unregister(new_driver
+ i
);
2307 EXPORT_SYMBOL(phy_drivers_register
);
2309 void phy_driver_unregister(struct phy_driver
*drv
)
2311 driver_unregister(&drv
->mdiodrv
.driver
);
2313 EXPORT_SYMBOL(phy_driver_unregister
);
2315 void phy_drivers_unregister(struct phy_driver
*drv
, int n
)
2319 for (i
= 0; i
< n
; i
++)
2320 phy_driver_unregister(drv
+ i
);
2322 EXPORT_SYMBOL(phy_drivers_unregister
);
2324 static struct phy_driver genphy_driver
= {
2325 .phy_id
= 0xffffffff,
2326 .phy_id_mask
= 0xffffffff,
2327 .name
= "Generic PHY",
2328 .soft_reset
= genphy_no_soft_reset
,
2329 .config_init
= genphy_config_init
,
2330 .features
= PHY_GBIT_ALL_PORTS_FEATURES
,
2331 .aneg_done
= genphy_aneg_done
,
2332 .suspend
= genphy_suspend
,
2333 .resume
= genphy_resume
,
2334 .set_loopback
= genphy_loopback
,
2337 static int __init
phy_init(void)
2341 rc
= mdio_bus_init();
2347 rc
= phy_driver_register(&genphy_10g_driver
, THIS_MODULE
);
2351 rc
= phy_driver_register(&genphy_driver
, THIS_MODULE
);
2353 phy_driver_unregister(&genphy_10g_driver
);
2361 static void __exit
phy_exit(void)
2363 phy_driver_unregister(&genphy_10g_driver
);
2364 phy_driver_unregister(&genphy_driver
);
2368 subsys_initcall(phy_init
);
2369 module_exit(phy_exit
);