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14
15#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16
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>
28#include <linux/mm.h>
29#include <linux/module.h>
30#include <linux/mii.h>
31#include <linux/ethtool.h>
32#include <linux/phy.h>
33#include <linux/phy_led_triggers.h>
34#include <linux/mdio.h>
35#include <linux/io.h>
36#include <linux/uaccess.h>
37#include <linux/of.h>
38
39#include <asm/irq.h>
40
41MODULE_DESCRIPTION("PHY library");
42MODULE_AUTHOR("Andy Fleming");
43MODULE_LICENSE("GPL");
44
45void phy_device_free(struct phy_device *phydev)
46{
47 put_device(&phydev->mdio.dev);
48}
49EXPORT_SYMBOL(phy_device_free);
50
51static void phy_mdio_device_free(struct mdio_device *mdiodev)
52{
53 struct phy_device *phydev;
54
55 phydev = container_of(mdiodev, struct phy_device, mdio);
56 phy_device_free(phydev);
57}
58
59static void phy_device_release(struct device *dev)
60{
61 kfree(to_phy_device(dev));
62}
63
64static void phy_mdio_device_remove(struct mdio_device *mdiodev)
65{
66 struct phy_device *phydev;
67
68 phydev = container_of(mdiodev, struct phy_device, mdio);
69 phy_device_remove(phydev);
70}
71
72static struct phy_driver genphy_driver;
73extern struct phy_driver genphy_10g_driver;
74
75static LIST_HEAD(phy_fixup_list);
76static DEFINE_MUTEX(phy_fixup_lock);
77
78#ifdef CONFIG_PM
79static bool mdio_bus_phy_may_suspend(struct phy_device *phydev)
80{
81 struct device_driver *drv = phydev->mdio.dev.driver;
82 struct phy_driver *phydrv = to_phy_driver(drv);
83 struct net_device *netdev = phydev->attached_dev;
84
85 if (!drv || !phydrv->suspend)
86 return false;
87
88
89
90
91
92
93 if (!netdev)
94 return !phydev->suspended;
95
96
97
98
99 if (netdev->dev.parent && device_may_wakeup(netdev->dev.parent))
100 return false;
101
102
103
104
105
106 if (device_may_wakeup(&netdev->dev))
107 return false;
108
109 return true;
110}
111
112static int mdio_bus_phy_suspend(struct device *dev)
113{
114 struct phy_device *phydev = to_phy_device(dev);
115
116
117
118
119
120
121 if (phydev->attached_dev && phydev->adjust_link)
122 phy_stop_machine(phydev);
123
124 if (!mdio_bus_phy_may_suspend(phydev))
125 return 0;
126
127 return phy_suspend(phydev);
128}
129
130static int mdio_bus_phy_resume(struct device *dev)
131{
132 struct phy_device *phydev = to_phy_device(dev);
133 int ret;
134
135 if (!mdio_bus_phy_may_suspend(phydev))
136 goto no_resume;
137
138 ret = phy_resume(phydev);
139 if (ret < 0)
140 return ret;
141
142no_resume:
143 if (phydev->attached_dev && phydev->adjust_link)
144 phy_start_machine(phydev);
145
146 return 0;
147}
148
149static int mdio_bus_phy_restore(struct device *dev)
150{
151 struct phy_device *phydev = to_phy_device(dev);
152 struct net_device *netdev = phydev->attached_dev;
153 int ret;
154
155 if (!netdev)
156 return 0;
157
158 ret = phy_init_hw(phydev);
159 if (ret < 0)
160 return ret;
161
162
163 phydev->link = 0;
164 phydev->state = PHY_UP;
165
166 phy_start_machine(phydev);
167
168 return 0;
169}
170
171static const struct dev_pm_ops mdio_bus_phy_pm_ops = {
172 .suspend = mdio_bus_phy_suspend,
173 .resume = mdio_bus_phy_resume,
174 .freeze = mdio_bus_phy_suspend,
175 .thaw = mdio_bus_phy_resume,
176 .restore = mdio_bus_phy_restore,
177};
178
179#define MDIO_BUS_PHY_PM_OPS (&mdio_bus_phy_pm_ops)
180
181#else
182
183#define MDIO_BUS_PHY_PM_OPS NULL
184
185#endif
186
187
188
189
190
191
192
193
194
195
196int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
197 int (*run)(struct phy_device *))
198{
199 struct phy_fixup *fixup = kzalloc(sizeof(*fixup), GFP_KERNEL);
200
201 if (!fixup)
202 return -ENOMEM;
203
204 strlcpy(fixup->bus_id, bus_id, sizeof(fixup->bus_id));
205 fixup->phy_uid = phy_uid;
206 fixup->phy_uid_mask = phy_uid_mask;
207 fixup->run = run;
208
209 mutex_lock(&phy_fixup_lock);
210 list_add_tail(&fixup->list, &phy_fixup_list);
211 mutex_unlock(&phy_fixup_lock);
212
213 return 0;
214}
215EXPORT_SYMBOL(phy_register_fixup);
216
217
218int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
219 int (*run)(struct phy_device *))
220{
221 return phy_register_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask, run);
222}
223EXPORT_SYMBOL(phy_register_fixup_for_uid);
224
225
226int phy_register_fixup_for_id(const char *bus_id,
227 int (*run)(struct phy_device *))
228{
229 return phy_register_fixup(bus_id, PHY_ANY_UID, 0xffffffff, run);
230}
231EXPORT_SYMBOL(phy_register_fixup_for_id);
232
233
234
235
236
237
238
239int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask)
240{
241 struct list_head *pos, *n;
242 struct phy_fixup *fixup;
243 int ret;
244
245 ret = -ENODEV;
246
247 mutex_lock(&phy_fixup_lock);
248 list_for_each_safe(pos, n, &phy_fixup_list) {
249 fixup = list_entry(pos, struct phy_fixup, list);
250
251 if ((!strcmp(fixup->bus_id, bus_id)) &&
252 ((fixup->phy_uid & phy_uid_mask) ==
253 (phy_uid & phy_uid_mask))) {
254 list_del(&fixup->list);
255 kfree(fixup);
256 ret = 0;
257 break;
258 }
259 }
260 mutex_unlock(&phy_fixup_lock);
261
262 return ret;
263}
264EXPORT_SYMBOL(phy_unregister_fixup);
265
266
267int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask)
268{
269 return phy_unregister_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask);
270}
271EXPORT_SYMBOL(phy_unregister_fixup_for_uid);
272
273
274int phy_unregister_fixup_for_id(const char *bus_id)
275{
276 return phy_unregister_fixup(bus_id, PHY_ANY_UID, 0xffffffff);
277}
278EXPORT_SYMBOL(phy_unregister_fixup_for_id);
279
280
281
282
283static int phy_needs_fixup(struct phy_device *phydev, struct phy_fixup *fixup)
284{
285 if (strcmp(fixup->bus_id, phydev_name(phydev)) != 0)
286 if (strcmp(fixup->bus_id, PHY_ANY_ID) != 0)
287 return 0;
288
289 if ((fixup->phy_uid & fixup->phy_uid_mask) !=
290 (phydev->phy_id & fixup->phy_uid_mask))
291 if (fixup->phy_uid != PHY_ANY_UID)
292 return 0;
293
294 return 1;
295}
296
297
298static int phy_scan_fixups(struct phy_device *phydev)
299{
300 struct phy_fixup *fixup;
301
302 mutex_lock(&phy_fixup_lock);
303 list_for_each_entry(fixup, &phy_fixup_list, list) {
304 if (phy_needs_fixup(phydev, fixup)) {
305 int err = fixup->run(phydev);
306
307 if (err < 0) {
308 mutex_unlock(&phy_fixup_lock);
309 return err;
310 }
311 phydev->has_fixups = true;
312 }
313 }
314 mutex_unlock(&phy_fixup_lock);
315
316 return 0;
317}
318
319static int phy_bus_match(struct device *dev, struct device_driver *drv)
320{
321 struct phy_device *phydev = to_phy_device(dev);
322 struct phy_driver *phydrv = to_phy_driver(drv);
323 const int num_ids = ARRAY_SIZE(phydev->c45_ids.device_ids);
324 int i;
325
326 if (!(phydrv->mdiodrv.flags & MDIO_DEVICE_IS_PHY))
327 return 0;
328
329 if (phydrv->match_phy_device)
330 return phydrv->match_phy_device(phydev);
331
332 if (phydev->is_c45) {
333 for (i = 1; i < num_ids; i++) {
334 if (!(phydev->c45_ids.devices_in_package & (1 << i)))
335 continue;
336
337 if ((phydrv->phy_id & phydrv->phy_id_mask) ==
338 (phydev->c45_ids.device_ids[i] &
339 phydrv->phy_id_mask))
340 return 1;
341 }
342 return 0;
343 } else {
344 return (phydrv->phy_id & phydrv->phy_id_mask) ==
345 (phydev->phy_id & phydrv->phy_id_mask);
346 }
347}
348
349struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
350 bool is_c45,
351 struct phy_c45_device_ids *c45_ids)
352{
353 struct phy_device *dev;
354 struct mdio_device *mdiodev;
355
356
357 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
358 if (!dev)
359 return ERR_PTR(-ENOMEM);
360
361 mdiodev = &dev->mdio;
362 mdiodev->dev.release = phy_device_release;
363 mdiodev->dev.parent = &bus->dev;
364 mdiodev->dev.bus = &mdio_bus_type;
365 mdiodev->bus = bus;
366 mdiodev->pm_ops = MDIO_BUS_PHY_PM_OPS;
367 mdiodev->bus_match = phy_bus_match;
368 mdiodev->addr = addr;
369 mdiodev->flags = MDIO_DEVICE_FLAG_PHY;
370 mdiodev->device_free = phy_mdio_device_free;
371 mdiodev->device_remove = phy_mdio_device_remove;
372
373 dev->speed = 0;
374 dev->duplex = -1;
375 dev->pause = 0;
376 dev->asym_pause = 0;
377 dev->link = 0;
378 dev->interface = PHY_INTERFACE_MODE_GMII;
379
380 dev->autoneg = AUTONEG_ENABLE;
381
382 dev->is_c45 = is_c45;
383 dev->phy_id = phy_id;
384 if (c45_ids)
385 dev->c45_ids = *c45_ids;
386 dev->irq = bus->irq[addr];
387 dev_set_name(&mdiodev->dev, PHY_ID_FMT, bus->id, addr);
388
389 dev->state = PHY_DOWN;
390
391 mutex_init(&dev->lock);
392 INIT_DELAYED_WORK(&dev->state_queue, phy_state_machine);
393 INIT_WORK(&dev->phy_queue, phy_change_work);
394
395
396
397
398
399
400
401
402
403
404
405 request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT, MDIO_ID_ARGS(phy_id));
406
407 device_initialize(&mdiodev->dev);
408
409 return dev;
410}
411EXPORT_SYMBOL(phy_device_create);
412
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420
421
422
423
424static int get_phy_c45_devs_in_pkg(struct mii_bus *bus, int addr, int dev_addr,
425 u32 *devices_in_package)
426{
427 int phy_reg, reg_addr;
428
429 reg_addr = MII_ADDR_C45 | dev_addr << 16 | MDIO_DEVS2;
430 phy_reg = mdiobus_read(bus, addr, reg_addr);
431 if (phy_reg < 0)
432 return -EIO;
433 *devices_in_package = (phy_reg & 0xffff) << 16;
434
435 reg_addr = MII_ADDR_C45 | dev_addr << 16 | MDIO_DEVS1;
436 phy_reg = mdiobus_read(bus, addr, reg_addr);
437 if (phy_reg < 0)
438 return -EIO;
439 *devices_in_package |= (phy_reg & 0xffff);
440
441 return 0;
442}
443
444
445
446
447
448
449
450
451
452
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454
455
456
457static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id,
458 struct phy_c45_device_ids *c45_ids) {
459 int phy_reg;
460 int i, reg_addr;
461 const int num_ids = ARRAY_SIZE(c45_ids->device_ids);
462 u32 *devs = &c45_ids->devices_in_package;
463
464
465
466
467 for (i = 1; i < num_ids && *devs == 0; i++) {
468 phy_reg = get_phy_c45_devs_in_pkg(bus, addr, i, devs);
469 if (phy_reg < 0)
470 return -EIO;
471
472 if ((*devs & 0x1fffffff) == 0x1fffffff) {
473
474
475
476
477
478 phy_reg = get_phy_c45_devs_in_pkg(bus, addr, 0, devs);
479 if (phy_reg < 0)
480 return -EIO;
481
482 if ((*devs & 0x1fffffff) == 0x1fffffff) {
483 *phy_id = 0xffffffff;
484 return 0;
485 } else {
486 break;
487 }
488 }
489 }
490
491
492 for (i = 1; i < num_ids; i++) {
493 if (!(c45_ids->devices_in_package & (1 << i)))
494 continue;
495
496 reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID1;
497 phy_reg = mdiobus_read(bus, addr, reg_addr);
498 if (phy_reg < 0)
499 return -EIO;
500 c45_ids->device_ids[i] = (phy_reg & 0xffff) << 16;
501
502 reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID2;
503 phy_reg = mdiobus_read(bus, addr, reg_addr);
504 if (phy_reg < 0)
505 return -EIO;
506 c45_ids->device_ids[i] |= (phy_reg & 0xffff);
507 }
508 *phy_id = 0;
509 return 0;
510}
511
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527
528static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id,
529 bool is_c45, struct phy_c45_device_ids *c45_ids)
530{
531 int phy_reg;
532
533 if (is_c45)
534 return get_phy_c45_ids(bus, addr, phy_id, c45_ids);
535
536
537 phy_reg = mdiobus_read(bus, addr, MII_PHYSID1);
538 if (phy_reg < 0) {
539
540
541
542 if (phy_reg == -EIO || phy_reg == -ENODEV) {
543 *phy_id = 0xffffffff;
544 return 0;
545 }
546
547 return -EIO;
548 }
549
550 *phy_id = (phy_reg & 0xffff) << 16;
551
552
553 phy_reg = mdiobus_read(bus, addr, MII_PHYSID2);
554 if (phy_reg < 0)
555 return -EIO;
556
557 *phy_id |= (phy_reg & 0xffff);
558
559 return 0;
560}
561
562
563
564
565
566
567
568
569
570
571
572struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
573{
574 struct phy_c45_device_ids c45_ids = {0};
575 u32 phy_id = 0;
576 int r;
577
578 r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids);
579 if (r)
580 return ERR_PTR(r);
581
582
583 if ((phy_id & 0x1fffffff) == 0x1fffffff)
584 return ERR_PTR(-ENODEV);
585
586 return phy_device_create(bus, addr, phy_id, is_c45, &c45_ids);
587}
588EXPORT_SYMBOL(get_phy_device);
589
590static ssize_t
591phy_id_show(struct device *dev, struct device_attribute *attr, char *buf)
592{
593 struct phy_device *phydev = to_phy_device(dev);
594
595 return sprintf(buf, "0x%.8lx\n", (unsigned long)phydev->phy_id);
596}
597static DEVICE_ATTR_RO(phy_id);
598
599static ssize_t
600phy_interface_show(struct device *dev, struct device_attribute *attr, char *buf)
601{
602 struct phy_device *phydev = to_phy_device(dev);
603 const char *mode = NULL;
604
605 if (phy_is_internal(phydev))
606 mode = "internal";
607 else
608 mode = phy_modes(phydev->interface);
609
610 return sprintf(buf, "%s\n", mode);
611}
612static DEVICE_ATTR_RO(phy_interface);
613
614static ssize_t
615phy_has_fixups_show(struct device *dev, struct device_attribute *attr,
616 char *buf)
617{
618 struct phy_device *phydev = to_phy_device(dev);
619
620 return sprintf(buf, "%d\n", phydev->has_fixups);
621}
622static DEVICE_ATTR_RO(phy_has_fixups);
623
624static struct attribute *phy_dev_attrs[] = {
625 &dev_attr_phy_id.attr,
626 &dev_attr_phy_interface.attr,
627 &dev_attr_phy_has_fixups.attr,
628 NULL,
629};
630ATTRIBUTE_GROUPS(phy_dev);
631
632
633
634
635
636int phy_device_register(struct phy_device *phydev)
637{
638 int err;
639
640 err = mdiobus_register_device(&phydev->mdio);
641 if (err)
642 return err;
643
644
645 phy_device_reset(phydev, 0);
646
647
648 err = phy_scan_fixups(phydev);
649 if (err) {
650 pr_err("PHY %d failed to initialize\n", phydev->mdio.addr);
651 goto out;
652 }
653
654 phydev->mdio.dev.groups = phy_dev_groups;
655
656 err = device_add(&phydev->mdio.dev);
657 if (err) {
658 pr_err("PHY %d failed to add\n", phydev->mdio.addr);
659 goto out;
660 }
661
662 return 0;
663
664 out:
665
666 phy_device_reset(phydev, 1);
667
668 mdiobus_unregister_device(&phydev->mdio);
669 return err;
670}
671EXPORT_SYMBOL(phy_device_register);
672
673
674
675
676
677
678
679
680
681void phy_device_remove(struct phy_device *phydev)
682{
683 device_del(&phydev->mdio.dev);
684
685
686 phy_device_reset(phydev, 1);
687
688 mdiobus_unregister_device(&phydev->mdio);
689}
690EXPORT_SYMBOL(phy_device_remove);
691
692
693
694
695
696struct phy_device *phy_find_first(struct mii_bus *bus)
697{
698 struct phy_device *phydev;
699 int addr;
700
701 for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
702 phydev = mdiobus_get_phy(bus, addr);
703 if (phydev)
704 return phydev;
705 }
706 return NULL;
707}
708EXPORT_SYMBOL(phy_find_first);
709
710static void phy_link_change(struct phy_device *phydev, bool up, bool do_carrier)
711{
712 struct net_device *netdev = phydev->attached_dev;
713
714 if (do_carrier) {
715 if (up)
716 netif_carrier_on(netdev);
717 else
718 netif_carrier_off(netdev);
719 }
720 phydev->adjust_link(netdev);
721}
722
723
724
725
726
727
728
729
730
731
732
733
734
735static void phy_prepare_link(struct phy_device *phydev,
736 void (*handler)(struct net_device *))
737{
738 phydev->adjust_link = handler;
739}
740
741
742
743
744
745
746
747
748int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
749 void (*handler)(struct net_device *),
750 phy_interface_t interface)
751{
752 int rc;
753
754 rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface);
755 if (rc)
756 return rc;
757
758 phy_prepare_link(phydev, handler);
759 phy_start_machine(phydev);
760 if (phydev->irq > 0)
761 phy_start_interrupts(phydev);
762
763 return 0;
764}
765EXPORT_SYMBOL(phy_connect_direct);
766
767
768
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780
781
782struct phy_device *phy_connect(struct net_device *dev, const char *bus_id,
783 void (*handler)(struct net_device *),
784 phy_interface_t interface)
785{
786 struct phy_device *phydev;
787 struct device *d;
788 int rc;
789
790
791
792
793 d = bus_find_device_by_name(&mdio_bus_type, NULL, bus_id);
794 if (!d) {
795 pr_err("PHY %s not found\n", bus_id);
796 return ERR_PTR(-ENODEV);
797 }
798 phydev = to_phy_device(d);
799
800 rc = phy_connect_direct(dev, phydev, handler, interface);
801 put_device(d);
802 if (rc)
803 return ERR_PTR(rc);
804
805 return phydev;
806}
807EXPORT_SYMBOL(phy_connect);
808
809
810
811
812
813
814void phy_disconnect(struct phy_device *phydev)
815{
816 if (phydev->irq > 0)
817 phy_stop_interrupts(phydev);
818
819 phy_stop_machine(phydev);
820
821 phydev->adjust_link = NULL;
822
823 phy_detach(phydev);
824}
825EXPORT_SYMBOL(phy_disconnect);
826
827
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844
845static int phy_poll_reset(struct phy_device *phydev)
846{
847
848 unsigned int retries = 12;
849 int ret;
850
851 do {
852 msleep(50);
853 ret = phy_read(phydev, MII_BMCR);
854 if (ret < 0)
855 return ret;
856 } while (ret & BMCR_RESET && --retries);
857 if (ret & BMCR_RESET)
858 return -ETIMEDOUT;
859
860
861
862
863 msleep(1);
864 return 0;
865}
866
867int phy_init_hw(struct phy_device *phydev)
868{
869 int ret = 0;
870
871
872 phy_device_reset(phydev, 0);
873
874 if (!phydev->drv || !phydev->drv->config_init)
875 return 0;
876
877 if (phydev->drv->soft_reset)
878 ret = phydev->drv->soft_reset(phydev);
879 else
880 ret = genphy_soft_reset(phydev);
881
882 if (ret < 0)
883 return ret;
884
885 ret = phy_scan_fixups(phydev);
886 if (ret < 0)
887 return ret;
888
889 return phydev->drv->config_init(phydev);
890}
891EXPORT_SYMBOL(phy_init_hw);
892
893void phy_attached_info(struct phy_device *phydev)
894{
895 phy_attached_print(phydev, NULL);
896}
897EXPORT_SYMBOL(phy_attached_info);
898
899#define ATTACHED_FMT "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%s)"
900void phy_attached_print(struct phy_device *phydev, const char *fmt, ...)
901{
902 const char *drv_name = phydev->drv ? phydev->drv->name : "unbound";
903 char *irq_str;
904 char irq_num[8];
905
906 switch(phydev->irq) {
907 case PHY_POLL:
908 irq_str = "POLL";
909 break;
910 case PHY_IGNORE_INTERRUPT:
911 irq_str = "IGNORE";
912 break;
913 default:
914 snprintf(irq_num, sizeof(irq_num), "%d", phydev->irq);
915 irq_str = irq_num;
916 break;
917 }
918
919
920 if (!fmt) {
921 dev_info(&phydev->mdio.dev, ATTACHED_FMT "\n",
922 drv_name, phydev_name(phydev),
923 irq_str);
924 } else {
925 va_list ap;
926
927 dev_info(&phydev->mdio.dev, ATTACHED_FMT,
928 drv_name, phydev_name(phydev),
929 irq_str);
930
931 va_start(ap, fmt);
932 vprintk(fmt, ap);
933 va_end(ap);
934 }
935}
936EXPORT_SYMBOL(phy_attached_print);
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
954 u32 flags, phy_interface_t interface)
955{
956 struct module *ndev_owner = dev->dev.parent->driver->owner;
957 struct mii_bus *bus = phydev->mdio.bus;
958 struct device *d = &phydev->mdio.dev;
959 bool using_genphy = false;
960 int err;
961
962
963
964
965
966
967 if (ndev_owner != bus->owner && !try_module_get(bus->owner)) {
968 dev_err(&dev->dev, "failed to get the bus module\n");
969 return -EIO;
970 }
971
972 get_device(d);
973
974
975
976
977 if (!d->driver) {
978 if (phydev->is_c45)
979 d->driver = &genphy_10g_driver.mdiodrv.driver;
980 else
981 d->driver = &genphy_driver.mdiodrv.driver;
982
983 using_genphy = true;
984 }
985
986 if (!try_module_get(d->driver->owner)) {
987 dev_err(&dev->dev, "failed to get the device driver module\n");
988 err = -EIO;
989 goto error_put_device;
990 }
991
992 if (using_genphy) {
993 err = d->driver->probe(d);
994 if (err >= 0)
995 err = device_bind_driver(d);
996
997 if (err)
998 goto error_module_put;
999 }
1000
1001 if (phydev->attached_dev) {
1002 dev_err(&dev->dev, "PHY already attached\n");
1003 err = -EBUSY;
1004 goto error;
1005 }
1006
1007 phydev->phy_link_change = phy_link_change;
1008 phydev->attached_dev = dev;
1009 dev->phydev = phydev;
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019 phydev->sysfs_links = false;
1020
1021 err = sysfs_create_link(&phydev->mdio.dev.kobj, &dev->dev.kobj,
1022 "attached_dev");
1023 if (!err) {
1024 err = sysfs_create_link_nowarn(&dev->dev.kobj,
1025 &phydev->mdio.dev.kobj,
1026 "phydev");
1027 if (err) {
1028 dev_err(&dev->dev, "could not add device link to %s err %d\n",
1029 kobject_name(&phydev->mdio.dev.kobj),
1030 err);
1031
1032
1033
1034 }
1035
1036 phydev->sysfs_links = true;
1037 }
1038
1039 phydev->dev_flags = flags;
1040
1041 phydev->interface = interface;
1042
1043 phydev->state = PHY_READY;
1044
1045
1046
1047
1048 netif_carrier_off(phydev->attached_dev);
1049
1050
1051
1052
1053
1054 err = phy_init_hw(phydev);
1055 if (err)
1056 goto error;
1057
1058 phy_resume(phydev);
1059 phy_led_triggers_register(phydev);
1060
1061 return err;
1062
1063error:
1064
1065 phy_detach(phydev);
1066 return err;
1067
1068error_module_put:
1069 module_put(d->driver->owner);
1070error_put_device:
1071 put_device(d);
1072 if (ndev_owner != bus->owner)
1073 module_put(bus->owner);
1074 return err;
1075}
1076EXPORT_SYMBOL(phy_attach_direct);
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087struct phy_device *phy_attach(struct net_device *dev, const char *bus_id,
1088 phy_interface_t interface)
1089{
1090 struct bus_type *bus = &mdio_bus_type;
1091 struct phy_device *phydev;
1092 struct device *d;
1093 int rc;
1094
1095
1096
1097
1098 d = bus_find_device_by_name(bus, NULL, bus_id);
1099 if (!d) {
1100 pr_err("PHY %s not found\n", bus_id);
1101 return ERR_PTR(-ENODEV);
1102 }
1103 phydev = to_phy_device(d);
1104
1105 rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface);
1106 put_device(d);
1107 if (rc)
1108 return ERR_PTR(rc);
1109
1110 return phydev;
1111}
1112EXPORT_SYMBOL(phy_attach);
1113
1114
1115
1116
1117
1118
1119
1120
1121void phy_detach(struct phy_device *phydev)
1122{
1123 struct net_device *dev = phydev->attached_dev;
1124 struct module *ndev_owner = dev->dev.parent->driver->owner;
1125 struct mii_bus *bus;
1126
1127 if (phydev->sysfs_links) {
1128 sysfs_remove_link(&dev->dev.kobj, "phydev");
1129 sysfs_remove_link(&phydev->mdio.dev.kobj, "attached_dev");
1130 }
1131 phydev->attached_dev->phydev = NULL;
1132 phydev->attached_dev = NULL;
1133 phy_suspend(phydev);
1134 phydev->phylink = NULL;
1135
1136 phy_led_triggers_unregister(phydev);
1137
1138 module_put(phydev->mdio.dev.driver->owner);
1139
1140
1141
1142
1143
1144
1145 if (phydev->mdio.dev.driver == &genphy_10g_driver.mdiodrv.driver ||
1146 phydev->mdio.dev.driver == &genphy_driver.mdiodrv.driver)
1147 device_release_driver(&phydev->mdio.dev);
1148
1149
1150
1151
1152
1153 bus = phydev->mdio.bus;
1154
1155 put_device(&phydev->mdio.dev);
1156 if (ndev_owner != bus->owner)
1157 module_put(bus->owner);
1158
1159
1160 phy_device_reset(phydev, 1);
1161}
1162EXPORT_SYMBOL(phy_detach);
1163
1164int phy_suspend(struct phy_device *phydev)
1165{
1166 struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver);
1167 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1168 int ret = 0;
1169
1170
1171 phy_ethtool_get_wol(phydev, &wol);
1172 if (wol.wolopts)
1173 return -EBUSY;
1174
1175 if (phydev->drv && phydrv->suspend)
1176 ret = phydrv->suspend(phydev);
1177
1178 if (ret)
1179 return ret;
1180
1181 phydev->suspended = true;
1182
1183 return ret;
1184}
1185EXPORT_SYMBOL(phy_suspend);
1186
1187int __phy_resume(struct phy_device *phydev)
1188{
1189 struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver);
1190 int ret = 0;
1191
1192 WARN_ON(!mutex_is_locked(&phydev->lock));
1193
1194 if (phydev->drv && phydrv->resume)
1195 ret = phydrv->resume(phydev);
1196
1197 if (ret)
1198 return ret;
1199
1200 phydev->suspended = false;
1201
1202 return ret;
1203}
1204EXPORT_SYMBOL(__phy_resume);
1205
1206int phy_resume(struct phy_device *phydev)
1207{
1208 int ret;
1209
1210 mutex_lock(&phydev->lock);
1211 ret = __phy_resume(phydev);
1212 mutex_unlock(&phydev->lock);
1213
1214 return ret;
1215}
1216EXPORT_SYMBOL(phy_resume);
1217
1218int phy_loopback(struct phy_device *phydev, bool enable)
1219{
1220 struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver);
1221 int ret = 0;
1222
1223 mutex_lock(&phydev->lock);
1224
1225 if (enable && phydev->loopback_enabled) {
1226 ret = -EBUSY;
1227 goto out;
1228 }
1229
1230 if (!enable && !phydev->loopback_enabled) {
1231 ret = -EINVAL;
1232 goto out;
1233 }
1234
1235 if (phydev->drv && phydrv->set_loopback)
1236 ret = phydrv->set_loopback(phydev, enable);
1237 else
1238 ret = -EOPNOTSUPP;
1239
1240 if (ret)
1241 goto out;
1242
1243 phydev->loopback_enabled = enable;
1244
1245out:
1246 mutex_unlock(&phydev->lock);
1247 return ret;
1248}
1249EXPORT_SYMBOL(phy_loopback);
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260int phy_reset_after_clk_enable(struct phy_device *phydev)
1261{
1262 if (!phydev || !phydev->drv)
1263 return -ENODEV;
1264
1265 if (phydev->drv->flags & PHY_RST_AFTER_CLK_EN) {
1266 phy_device_reset(phydev, 1);
1267 phy_device_reset(phydev, 0);
1268 return 1;
1269 }
1270
1271 return 0;
1272}
1273EXPORT_SYMBOL(phy_reset_after_clk_enable);
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286static int genphy_config_advert(struct phy_device *phydev)
1287{
1288 u32 advertise;
1289 int oldadv, adv, bmsr;
1290 int err, changed = 0;
1291
1292
1293 phydev->advertising &= phydev->supported;
1294 advertise = phydev->advertising;
1295
1296
1297 adv = phy_read(phydev, MII_ADVERTISE);
1298 if (adv < 0)
1299 return adv;
1300
1301 oldadv = adv;
1302 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP |
1303 ADVERTISE_PAUSE_ASYM);
1304 adv |= ethtool_adv_to_mii_adv_t(advertise);
1305
1306 if (adv != oldadv) {
1307 err = phy_write(phydev, MII_ADVERTISE, adv);
1308
1309 if (err < 0)
1310 return err;
1311 changed = 1;
1312 }
1313
1314 bmsr = phy_read(phydev, MII_BMSR);
1315 if (bmsr < 0)
1316 return bmsr;
1317
1318
1319
1320
1321
1322 if (!(bmsr & BMSR_ESTATEN))
1323 return changed;
1324
1325
1326 adv = phy_read(phydev, MII_CTRL1000);
1327 if (adv < 0)
1328 return adv;
1329
1330 oldadv = adv;
1331 adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
1332
1333 if (phydev->supported & (SUPPORTED_1000baseT_Half |
1334 SUPPORTED_1000baseT_Full)) {
1335 adv |= ethtool_adv_to_mii_ctrl1000_t(advertise);
1336 }
1337
1338 if (adv != oldadv)
1339 changed = 1;
1340
1341 err = phy_write(phydev, MII_CTRL1000, adv);
1342 if (err < 0)
1343 return err;
1344
1345 return changed;
1346}
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356static int genphy_config_eee_advert(struct phy_device *phydev)
1357{
1358 int broken = phydev->eee_broken_modes;
1359 int old_adv, adv;
1360
1361
1362 if (!broken)
1363 return 0;
1364
1365
1366
1367
1368
1369 adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
1370 if (adv <= 0)
1371 return 0;
1372
1373 old_adv = adv;
1374 adv &= ~broken;
1375
1376
1377 if (old_adv == adv)
1378 return 0;
1379
1380 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);
1381
1382 return 1;
1383}
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393int genphy_setup_forced(struct phy_device *phydev)
1394{
1395 u16 ctl = 0;
1396
1397 phydev->pause = 0;
1398 phydev->asym_pause = 0;
1399
1400 if (SPEED_1000 == phydev->speed)
1401 ctl |= BMCR_SPEED1000;
1402 else if (SPEED_100 == phydev->speed)
1403 ctl |= BMCR_SPEED100;
1404
1405 if (DUPLEX_FULL == phydev->duplex)
1406 ctl |= BMCR_FULLDPLX;
1407
1408 return phy_modify(phydev, MII_BMCR,
1409 ~(BMCR_LOOPBACK | BMCR_ISOLATE | BMCR_PDOWN), ctl);
1410}
1411EXPORT_SYMBOL(genphy_setup_forced);
1412
1413
1414
1415
1416
1417int genphy_restart_aneg(struct phy_device *phydev)
1418{
1419
1420 return phy_modify(phydev, MII_BMCR, BMCR_ISOLATE,
1421 BMCR_ANENABLE | BMCR_ANRESTART);
1422}
1423EXPORT_SYMBOL(genphy_restart_aneg);
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433int genphy_config_aneg(struct phy_device *phydev)
1434{
1435 int err, changed;
1436
1437 changed = genphy_config_eee_advert(phydev);
1438
1439 if (AUTONEG_ENABLE != phydev->autoneg)
1440 return genphy_setup_forced(phydev);
1441
1442 err = genphy_config_advert(phydev);
1443 if (err < 0)
1444 return err;
1445
1446 changed |= err;
1447
1448 if (changed == 0) {
1449
1450
1451
1452 int ctl = phy_read(phydev, MII_BMCR);
1453
1454 if (ctl < 0)
1455 return ctl;
1456
1457 if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE))
1458 changed = 1;
1459 }
1460
1461
1462
1463
1464 if (changed > 0)
1465 return genphy_restart_aneg(phydev);
1466
1467 return 0;
1468}
1469EXPORT_SYMBOL(genphy_config_aneg);
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479int genphy_aneg_done(struct phy_device *phydev)
1480{
1481 int retval = phy_read(phydev, MII_BMSR);
1482
1483 return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE);
1484}
1485EXPORT_SYMBOL(genphy_aneg_done);
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495int genphy_update_link(struct phy_device *phydev)
1496{
1497 int status;
1498
1499
1500 status = phy_read(phydev, MII_BMSR);
1501 if (status < 0)
1502 return status;
1503
1504
1505 status = phy_read(phydev, MII_BMSR);
1506 if (status < 0)
1507 return status;
1508
1509 if ((status & BMSR_LSTATUS) == 0)
1510 phydev->link = 0;
1511 else
1512 phydev->link = 1;
1513
1514 return 0;
1515}
1516EXPORT_SYMBOL(genphy_update_link);
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527int genphy_read_status(struct phy_device *phydev)
1528{
1529 int adv;
1530 int err;
1531 int lpa;
1532 int lpagb = 0;
1533 int common_adv;
1534 int common_adv_gb = 0;
1535
1536
1537 err = genphy_update_link(phydev);
1538 if (err)
1539 return err;
1540
1541 phydev->lp_advertising = 0;
1542
1543 if (AUTONEG_ENABLE == phydev->autoneg) {
1544 if (phydev->supported & (SUPPORTED_1000baseT_Half
1545 | SUPPORTED_1000baseT_Full)) {
1546 lpagb = phy_read(phydev, MII_STAT1000);
1547 if (lpagb < 0)
1548 return lpagb;
1549
1550 adv = phy_read(phydev, MII_CTRL1000);
1551 if (adv < 0)
1552 return adv;
1553
1554 phydev->lp_advertising =
1555 mii_stat1000_to_ethtool_lpa_t(lpagb);
1556 common_adv_gb = lpagb & adv << 2;
1557 }
1558
1559 lpa = phy_read(phydev, MII_LPA);
1560 if (lpa < 0)
1561 return lpa;
1562
1563 phydev->lp_advertising |= mii_lpa_to_ethtool_lpa_t(lpa);
1564
1565 adv = phy_read(phydev, MII_ADVERTISE);
1566 if (adv < 0)
1567 return adv;
1568
1569 common_adv = lpa & adv;
1570
1571 phydev->speed = SPEED_10;
1572 phydev->duplex = DUPLEX_HALF;
1573 phydev->pause = 0;
1574 phydev->asym_pause = 0;
1575
1576 if (common_adv_gb & (LPA_1000FULL | LPA_1000HALF)) {
1577 phydev->speed = SPEED_1000;
1578
1579 if (common_adv_gb & LPA_1000FULL)
1580 phydev->duplex = DUPLEX_FULL;
1581 } else if (common_adv & (LPA_100FULL | LPA_100HALF)) {
1582 phydev->speed = SPEED_100;
1583
1584 if (common_adv & LPA_100FULL)
1585 phydev->duplex = DUPLEX_FULL;
1586 } else
1587 if (common_adv & LPA_10FULL)
1588 phydev->duplex = DUPLEX_FULL;
1589
1590 if (phydev->duplex == DUPLEX_FULL) {
1591 phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;
1592 phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;
1593 }
1594 } else {
1595 int bmcr = phy_read(phydev, MII_BMCR);
1596
1597 if (bmcr < 0)
1598 return bmcr;
1599
1600 if (bmcr & BMCR_FULLDPLX)
1601 phydev->duplex = DUPLEX_FULL;
1602 else
1603 phydev->duplex = DUPLEX_HALF;
1604
1605 if (bmcr & BMCR_SPEED1000)
1606 phydev->speed = SPEED_1000;
1607 else if (bmcr & BMCR_SPEED100)
1608 phydev->speed = SPEED_100;
1609 else
1610 phydev->speed = SPEED_10;
1611
1612 phydev->pause = 0;
1613 phydev->asym_pause = 0;
1614 }
1615
1616 return 0;
1617}
1618EXPORT_SYMBOL(genphy_read_status);
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629int genphy_soft_reset(struct phy_device *phydev)
1630{
1631 int ret;
1632
1633 ret = phy_write(phydev, MII_BMCR, BMCR_RESET);
1634 if (ret < 0)
1635 return ret;
1636
1637 return phy_poll_reset(phydev);
1638}
1639EXPORT_SYMBOL(genphy_soft_reset);
1640
1641int genphy_config_init(struct phy_device *phydev)
1642{
1643 int val;
1644 u32 features;
1645
1646 features = (SUPPORTED_TP | SUPPORTED_MII
1647 | SUPPORTED_AUI | SUPPORTED_FIBRE |
1648 SUPPORTED_BNC | SUPPORTED_Pause | SUPPORTED_Asym_Pause);
1649
1650
1651 val = phy_read(phydev, MII_BMSR);
1652 if (val < 0)
1653 return val;
1654
1655 if (val & BMSR_ANEGCAPABLE)
1656 features |= SUPPORTED_Autoneg;
1657
1658 if (val & BMSR_100FULL)
1659 features |= SUPPORTED_100baseT_Full;
1660 if (val & BMSR_100HALF)
1661 features |= SUPPORTED_100baseT_Half;
1662 if (val & BMSR_10FULL)
1663 features |= SUPPORTED_10baseT_Full;
1664 if (val & BMSR_10HALF)
1665 features |= SUPPORTED_10baseT_Half;
1666
1667 if (val & BMSR_ESTATEN) {
1668 val = phy_read(phydev, MII_ESTATUS);
1669 if (val < 0)
1670 return val;
1671
1672 if (val & ESTATUS_1000_TFULL)
1673 features |= SUPPORTED_1000baseT_Full;
1674 if (val & ESTATUS_1000_THALF)
1675 features |= SUPPORTED_1000baseT_Half;
1676 }
1677
1678 phydev->supported &= features;
1679 phydev->advertising &= features;
1680
1681 return 0;
1682}
1683EXPORT_SYMBOL(genphy_config_init);
1684
1685
1686
1687
1688
1689int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad, u16 regnum)
1690{
1691 return -EOPNOTSUPP;
1692}
1693EXPORT_SYMBOL(genphy_read_mmd_unsupported);
1694
1695int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum,
1696 u16 regnum, u16 val)
1697{
1698 return -EOPNOTSUPP;
1699}
1700EXPORT_SYMBOL(genphy_write_mmd_unsupported);
1701
1702int genphy_suspend(struct phy_device *phydev)
1703{
1704 return phy_set_bits(phydev, MII_BMCR, BMCR_PDOWN);
1705}
1706EXPORT_SYMBOL(genphy_suspend);
1707
1708int genphy_resume(struct phy_device *phydev)
1709{
1710 return phy_clear_bits(phydev, MII_BMCR, BMCR_PDOWN);
1711}
1712EXPORT_SYMBOL(genphy_resume);
1713
1714int genphy_loopback(struct phy_device *phydev, bool enable)
1715{
1716 return phy_modify(phydev, MII_BMCR, BMCR_LOOPBACK,
1717 enable ? BMCR_LOOPBACK : 0);
1718}
1719EXPORT_SYMBOL(genphy_loopback);
1720
1721static int __set_phy_supported(struct phy_device *phydev, u32 max_speed)
1722{
1723
1724
1725
1726
1727 phydev->supported &= PHY_DEFAULT_FEATURES;
1728
1729 switch (max_speed) {
1730 default:
1731 return -ENOTSUPP;
1732 case SPEED_1000:
1733 phydev->supported |= PHY_1000BT_FEATURES;
1734
1735 case SPEED_100:
1736 phydev->supported |= PHY_100BT_FEATURES;
1737
1738 case SPEED_10:
1739 phydev->supported |= PHY_10BT_FEATURES;
1740 }
1741
1742 return 0;
1743}
1744
1745int phy_set_max_speed(struct phy_device *phydev, u32 max_speed)
1746{
1747 int err;
1748
1749 err = __set_phy_supported(phydev, max_speed);
1750 if (err)
1751 return err;
1752
1753 phydev->advertising = phydev->supported;
1754
1755 return 0;
1756}
1757EXPORT_SYMBOL(phy_set_max_speed);
1758
1759static void of_set_phy_supported(struct phy_device *phydev)
1760{
1761 struct device_node *node = phydev->mdio.dev.of_node;
1762 u32 max_speed;
1763
1764 if (!IS_ENABLED(CONFIG_OF_MDIO))
1765 return;
1766
1767 if (!node)
1768 return;
1769
1770 if (!of_property_read_u32(node, "max-speed", &max_speed))
1771 __set_phy_supported(phydev, max_speed);
1772}
1773
1774static void of_set_phy_eee_broken(struct phy_device *phydev)
1775{
1776 struct device_node *node = phydev->mdio.dev.of_node;
1777 u32 broken = 0;
1778
1779 if (!IS_ENABLED(CONFIG_OF_MDIO))
1780 return;
1781
1782 if (!node)
1783 return;
1784
1785 if (of_property_read_bool(node, "eee-broken-100tx"))
1786 broken |= MDIO_EEE_100TX;
1787 if (of_property_read_bool(node, "eee-broken-1000t"))
1788 broken |= MDIO_EEE_1000T;
1789 if (of_property_read_bool(node, "eee-broken-10gt"))
1790 broken |= MDIO_EEE_10GT;
1791 if (of_property_read_bool(node, "eee-broken-1000kx"))
1792 broken |= MDIO_EEE_1000KX;
1793 if (of_property_read_bool(node, "eee-broken-10gkx4"))
1794 broken |= MDIO_EEE_10GKX4;
1795 if (of_property_read_bool(node, "eee-broken-10gkr"))
1796 broken |= MDIO_EEE_10GKR;
1797
1798 phydev->eee_broken_modes = broken;
1799}
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809static int phy_probe(struct device *dev)
1810{
1811 struct phy_device *phydev = to_phy_device(dev);
1812 struct device_driver *drv = phydev->mdio.dev.driver;
1813 struct phy_driver *phydrv = to_phy_driver(drv);
1814 int err = 0;
1815
1816 phydev->drv = phydrv;
1817
1818
1819
1820
1821 if (!(phydrv->flags & PHY_HAS_INTERRUPT) &&
1822 phy_interrupt_is_valid(phydev))
1823 phydev->irq = PHY_POLL;
1824
1825 if (phydrv->flags & PHY_IS_INTERNAL)
1826 phydev->is_internal = true;
1827
1828 mutex_lock(&phydev->lock);
1829
1830
1831
1832
1833
1834 phydev->supported = phydrv->features;
1835 of_set_phy_supported(phydev);
1836 phydev->advertising = phydev->supported;
1837
1838
1839
1840
1841 of_set_phy_eee_broken(phydev);
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854 if (phydrv->features & (SUPPORTED_Pause | SUPPORTED_Asym_Pause)) {
1855 phydev->supported &= ~(SUPPORTED_Pause | SUPPORTED_Asym_Pause);
1856 phydev->supported |= phydrv->features &
1857 (SUPPORTED_Pause | SUPPORTED_Asym_Pause);
1858 } else {
1859 phydev->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
1860 }
1861
1862
1863 phydev->state = PHY_READY;
1864
1865 if (phydev->drv->probe) {
1866
1867 phy_device_reset(phydev, 0);
1868
1869 err = phydev->drv->probe(phydev);
1870 if (err) {
1871
1872 phy_device_reset(phydev, 1);
1873 }
1874 }
1875
1876 mutex_unlock(&phydev->lock);
1877
1878 return err;
1879}
1880
1881static int phy_remove(struct device *dev)
1882{
1883 struct phy_device *phydev = to_phy_device(dev);
1884
1885 cancel_delayed_work_sync(&phydev->state_queue);
1886
1887 mutex_lock(&phydev->lock);
1888 phydev->state = PHY_DOWN;
1889 mutex_unlock(&phydev->lock);
1890
1891 if (phydev->drv && phydev->drv->remove) {
1892 phydev->drv->remove(phydev);
1893
1894
1895 phy_device_reset(phydev, 1);
1896 }
1897 phydev->drv = NULL;
1898
1899 return 0;
1900}
1901
1902
1903
1904
1905
1906
1907int phy_driver_register(struct phy_driver *new_driver, struct module *owner)
1908{
1909 int retval;
1910
1911 new_driver->mdiodrv.flags |= MDIO_DEVICE_IS_PHY;
1912 new_driver->mdiodrv.driver.name = new_driver->name;
1913 new_driver->mdiodrv.driver.bus = &mdio_bus_type;
1914 new_driver->mdiodrv.driver.probe = phy_probe;
1915 new_driver->mdiodrv.driver.remove = phy_remove;
1916 new_driver->mdiodrv.driver.owner = owner;
1917
1918 retval = driver_register(&new_driver->mdiodrv.driver);
1919 if (retval) {
1920 pr_err("%s: Error %d in registering driver\n",
1921 new_driver->name, retval);
1922
1923 return retval;
1924 }
1925
1926 pr_debug("%s: Registered new driver\n", new_driver->name);
1927
1928 return 0;
1929}
1930EXPORT_SYMBOL(phy_driver_register);
1931
1932int phy_drivers_register(struct phy_driver *new_driver, int n,
1933 struct module *owner)
1934{
1935 int i, ret = 0;
1936
1937 for (i = 0; i < n; i++) {
1938 ret = phy_driver_register(new_driver + i, owner);
1939 if (ret) {
1940 while (i-- > 0)
1941 phy_driver_unregister(new_driver + i);
1942 break;
1943 }
1944 }
1945 return ret;
1946}
1947EXPORT_SYMBOL(phy_drivers_register);
1948
1949void phy_driver_unregister(struct phy_driver *drv)
1950{
1951 driver_unregister(&drv->mdiodrv.driver);
1952}
1953EXPORT_SYMBOL(phy_driver_unregister);
1954
1955void phy_drivers_unregister(struct phy_driver *drv, int n)
1956{
1957 int i;
1958
1959 for (i = 0; i < n; i++)
1960 phy_driver_unregister(drv + i);
1961}
1962EXPORT_SYMBOL(phy_drivers_unregister);
1963
1964static struct phy_driver genphy_driver = {
1965 .phy_id = 0xffffffff,
1966 .phy_id_mask = 0xffffffff,
1967 .name = "Generic PHY",
1968 .soft_reset = genphy_no_soft_reset,
1969 .config_init = genphy_config_init,
1970 .features = PHY_GBIT_FEATURES | SUPPORTED_MII |
1971 SUPPORTED_AUI | SUPPORTED_FIBRE |
1972 SUPPORTED_BNC,
1973 .aneg_done = genphy_aneg_done,
1974 .suspend = genphy_suspend,
1975 .resume = genphy_resume,
1976 .set_loopback = genphy_loopback,
1977};
1978
1979static int __init phy_init(void)
1980{
1981 int rc;
1982
1983 rc = mdio_bus_init();
1984 if (rc)
1985 return rc;
1986
1987 rc = phy_driver_register(&genphy_10g_driver, THIS_MODULE);
1988 if (rc)
1989 goto err_10g;
1990
1991 rc = phy_driver_register(&genphy_driver, THIS_MODULE);
1992 if (rc) {
1993 phy_driver_unregister(&genphy_10g_driver);
1994err_10g:
1995 mdio_bus_exit();
1996 }
1997
1998 return rc;
1999}
2000
2001static void __exit phy_exit(void)
2002{
2003 phy_driver_unregister(&genphy_10g_driver);
2004 phy_driver_unregister(&genphy_driver);
2005 mdio_bus_exit();
2006}
2007
2008subsys_initcall(phy_init);
2009module_exit(phy_exit);
2010