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11#include <linux/kernel.h>
12#include <linux/string.h>
13#include <linux/errno.h>
14#include <linux/unistd.h>
15#include <linux/interrupt.h>
16#include <linux/delay.h>
17#include <linux/netdevice.h>
18#include <linux/etherdevice.h>
19#include <linux/skbuff.h>
20#include <linux/mm.h>
21#include <linux/module.h>
22#include <linux/mii.h>
23#include <linux/ethtool.h>
24#include <linux/phy.h>
25#include <linux/phy_led_triggers.h>
26#include <linux/sfp.h>
27#include <linux/workqueue.h>
28#include <linux/mdio.h>
29#include <linux/io.h>
30#include <linux/uaccess.h>
31#include <linux/atomic.h>
32
33#define PHY_STATE_TIME HZ
34
35#define PHY_STATE_STR(_state) \
36 case PHY_##_state: \
37 return __stringify(_state); \
38
39static const char *phy_state_to_str(enum phy_state st)
40{
41 switch (st) {
42 PHY_STATE_STR(DOWN)
43 PHY_STATE_STR(READY)
44 PHY_STATE_STR(UP)
45 PHY_STATE_STR(RUNNING)
46 PHY_STATE_STR(NOLINK)
47 PHY_STATE_STR(HALTED)
48 }
49
50 return NULL;
51}
52
53static void phy_link_up(struct phy_device *phydev)
54{
55 phydev->phy_link_change(phydev, true, true);
56 phy_led_trigger_change_speed(phydev);
57}
58
59static void phy_link_down(struct phy_device *phydev, bool do_carrier)
60{
61 phydev->phy_link_change(phydev, false, do_carrier);
62 phy_led_trigger_change_speed(phydev);
63}
64
65static const char *phy_pause_str(struct phy_device *phydev)
66{
67 bool local_pause, local_asym_pause;
68
69 if (phydev->autoneg == AUTONEG_DISABLE)
70 goto no_pause;
71
72 local_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
73 phydev->advertising);
74 local_asym_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
75 phydev->advertising);
76
77 if (local_pause && phydev->pause)
78 return "rx/tx";
79
80 if (local_asym_pause && phydev->asym_pause) {
81 if (local_pause)
82 return "rx";
83 if (phydev->pause)
84 return "tx";
85 }
86
87no_pause:
88 return "off";
89}
90
91
92
93
94
95void phy_print_status(struct phy_device *phydev)
96{
97 if (phydev->link) {
98 netdev_info(phydev->attached_dev,
99 "Link is Up - %s/%s - flow control %s\n",
100 phy_speed_to_str(phydev->speed),
101 phy_duplex_to_str(phydev->duplex),
102 phy_pause_str(phydev));
103 } else {
104 netdev_info(phydev->attached_dev, "Link is Down\n");
105 }
106}
107EXPORT_SYMBOL(phy_print_status);
108
109
110
111
112
113
114
115
116
117
118static int phy_clear_interrupt(struct phy_device *phydev)
119{
120 if (phydev->drv->ack_interrupt)
121 return phydev->drv->ack_interrupt(phydev);
122
123 return 0;
124}
125
126
127
128
129
130
131
132
133static int phy_config_interrupt(struct phy_device *phydev, bool interrupts)
134{
135 phydev->interrupts = interrupts ? 1 : 0;
136 if (phydev->drv->config_intr)
137 return phydev->drv->config_intr(phydev);
138
139 return 0;
140}
141
142
143
144
145
146
147
148
149int phy_restart_aneg(struct phy_device *phydev)
150{
151 int ret;
152
153 if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
154 ret = genphy_c45_restart_aneg(phydev);
155 else
156 ret = genphy_restart_aneg(phydev);
157
158 return ret;
159}
160EXPORT_SYMBOL_GPL(phy_restart_aneg);
161
162
163
164
165
166
167
168
169
170int phy_aneg_done(struct phy_device *phydev)
171{
172 if (phydev->drv && phydev->drv->aneg_done)
173 return phydev->drv->aneg_done(phydev);
174 else if (phydev->is_c45)
175 return genphy_c45_aneg_done(phydev);
176 else
177 return genphy_aneg_done(phydev);
178}
179EXPORT_SYMBOL(phy_aneg_done);
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194static const struct phy_setting *
195phy_find_valid(int speed, int duplex, unsigned long *supported)
196{
197 return phy_lookup_setting(speed, duplex, supported, false);
198}
199
200
201
202
203
204
205
206
207
208
209
210unsigned int phy_supported_speeds(struct phy_device *phy,
211 unsigned int *speeds,
212 unsigned int size)
213{
214 return phy_speeds(speeds, size, phy->supported);
215}
216
217
218
219
220
221
222
223
224
225
226static inline bool phy_check_valid(int speed, int duplex,
227 unsigned long *features)
228{
229 return !!phy_lookup_setting(speed, duplex, features, true);
230}
231
232
233
234
235
236
237
238
239
240static void phy_sanitize_settings(struct phy_device *phydev)
241{
242 const struct phy_setting *setting;
243
244 setting = phy_find_valid(phydev->speed, phydev->duplex,
245 phydev->supported);
246 if (setting) {
247 phydev->speed = setting->speed;
248 phydev->duplex = setting->duplex;
249 } else {
250
251 phydev->speed = SPEED_UNKNOWN;
252 phydev->duplex = DUPLEX_UNKNOWN;
253 }
254}
255
256int phy_ethtool_ksettings_set(struct phy_device *phydev,
257 const struct ethtool_link_ksettings *cmd)
258{
259 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
260 u8 autoneg = cmd->base.autoneg;
261 u8 duplex = cmd->base.duplex;
262 u32 speed = cmd->base.speed;
263
264 if (cmd->base.phy_address != phydev->mdio.addr)
265 return -EINVAL;
266
267 linkmode_copy(advertising, cmd->link_modes.advertising);
268
269
270 linkmode_and(advertising, advertising, phydev->supported);
271
272
273 if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE)
274 return -EINVAL;
275
276 if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising))
277 return -EINVAL;
278
279 if (autoneg == AUTONEG_DISABLE &&
280 ((speed != SPEED_1000 &&
281 speed != SPEED_100 &&
282 speed != SPEED_10) ||
283 (duplex != DUPLEX_HALF &&
284 duplex != DUPLEX_FULL)))
285 return -EINVAL;
286
287 phydev->autoneg = autoneg;
288
289 phydev->speed = speed;
290
291 linkmode_copy(phydev->advertising, advertising);
292
293 linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
294 phydev->advertising, autoneg == AUTONEG_ENABLE);
295
296 phydev->duplex = duplex;
297
298 phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl;
299
300
301 phy_start_aneg(phydev);
302
303 return 0;
304}
305EXPORT_SYMBOL(phy_ethtool_ksettings_set);
306
307void phy_ethtool_ksettings_get(struct phy_device *phydev,
308 struct ethtool_link_ksettings *cmd)
309{
310 linkmode_copy(cmd->link_modes.supported, phydev->supported);
311 linkmode_copy(cmd->link_modes.advertising, phydev->advertising);
312 linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising);
313
314 cmd->base.speed = phydev->speed;
315 cmd->base.duplex = phydev->duplex;
316 if (phydev->interface == PHY_INTERFACE_MODE_MOCA)
317 cmd->base.port = PORT_BNC;
318 else
319 cmd->base.port = PORT_MII;
320 cmd->base.transceiver = phy_is_internal(phydev) ?
321 XCVR_INTERNAL : XCVR_EXTERNAL;
322 cmd->base.phy_address = phydev->mdio.addr;
323 cmd->base.autoneg = phydev->autoneg;
324 cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl;
325 cmd->base.eth_tp_mdix = phydev->mdix;
326}
327EXPORT_SYMBOL(phy_ethtool_ksettings_get);
328
329
330
331
332
333
334
335
336
337
338
339int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd)
340{
341 struct mii_ioctl_data *mii_data = if_mii(ifr);
342 u16 val = mii_data->val_in;
343 bool change_autoneg = false;
344 int prtad, devad;
345
346 switch (cmd) {
347 case SIOCGMIIPHY:
348 mii_data->phy_id = phydev->mdio.addr;
349
350
351 case SIOCGMIIREG:
352 if (mdio_phy_id_is_c45(mii_data->phy_id)) {
353 prtad = mdio_phy_id_prtad(mii_data->phy_id);
354 devad = mdio_phy_id_devad(mii_data->phy_id);
355 devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num;
356 } else {
357 prtad = mii_data->phy_id;
358 devad = mii_data->reg_num;
359 }
360 mii_data->val_out = mdiobus_read(phydev->mdio.bus, prtad,
361 devad);
362 return 0;
363
364 case SIOCSMIIREG:
365 if (mdio_phy_id_is_c45(mii_data->phy_id)) {
366 prtad = mdio_phy_id_prtad(mii_data->phy_id);
367 devad = mdio_phy_id_devad(mii_data->phy_id);
368 devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num;
369 } else {
370 prtad = mii_data->phy_id;
371 devad = mii_data->reg_num;
372 }
373 if (prtad == phydev->mdio.addr) {
374 switch (devad) {
375 case MII_BMCR:
376 if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) {
377 if (phydev->autoneg == AUTONEG_ENABLE)
378 change_autoneg = true;
379 phydev->autoneg = AUTONEG_DISABLE;
380 if (val & BMCR_FULLDPLX)
381 phydev->duplex = DUPLEX_FULL;
382 else
383 phydev->duplex = DUPLEX_HALF;
384 if (val & BMCR_SPEED1000)
385 phydev->speed = SPEED_1000;
386 else if (val & BMCR_SPEED100)
387 phydev->speed = SPEED_100;
388 else phydev->speed = SPEED_10;
389 }
390 else {
391 if (phydev->autoneg == AUTONEG_DISABLE)
392 change_autoneg = true;
393 phydev->autoneg = AUTONEG_ENABLE;
394 }
395 break;
396 case MII_ADVERTISE:
397 mii_adv_mod_linkmode_adv_t(phydev->advertising,
398 val);
399 change_autoneg = true;
400 break;
401 case MII_CTRL1000:
402 mii_ctrl1000_mod_linkmode_adv_t(phydev->advertising,
403 val);
404 change_autoneg = true;
405 break;
406 default:
407
408 break;
409 }
410 }
411
412 mdiobus_write(phydev->mdio.bus, prtad, devad, val);
413
414 if (prtad == phydev->mdio.addr &&
415 devad == MII_BMCR &&
416 val & BMCR_RESET)
417 return phy_init_hw(phydev);
418
419 if (change_autoneg)
420 return phy_start_aneg(phydev);
421
422 return 0;
423
424 case SIOCSHWTSTAMP:
425 if (phydev->drv && phydev->drv->hwtstamp)
426 return phydev->drv->hwtstamp(phydev, ifr);
427
428
429 default:
430 return -EOPNOTSUPP;
431 }
432}
433EXPORT_SYMBOL(phy_mii_ioctl);
434
435void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies)
436{
437 mod_delayed_work(system_power_efficient_wq, &phydev->state_queue,
438 jiffies);
439}
440EXPORT_SYMBOL(phy_queue_state_machine);
441
442static void phy_trigger_machine(struct phy_device *phydev)
443{
444 phy_queue_state_machine(phydev, 0);
445}
446
447static int phy_config_aneg(struct phy_device *phydev)
448{
449 if (phydev->drv->config_aneg)
450 return phydev->drv->config_aneg(phydev);
451
452
453
454
455 if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
456 return genphy_c45_config_aneg(phydev);
457
458 return genphy_config_aneg(phydev);
459}
460
461
462
463
464
465
466
467
468static int phy_check_link_status(struct phy_device *phydev)
469{
470 int err;
471
472 WARN_ON(!mutex_is_locked(&phydev->lock));
473
474
475
476
477 if (phydev->loopback_enabled)
478 return 0;
479
480 err = phy_read_status(phydev);
481 if (err)
482 return err;
483
484 if (phydev->link && phydev->state != PHY_RUNNING) {
485 phydev->state = PHY_RUNNING;
486 phy_link_up(phydev);
487 } else if (!phydev->link && phydev->state != PHY_NOLINK) {
488 phydev->state = PHY_NOLINK;
489 phy_link_down(phydev, true);
490 }
491
492 return 0;
493}
494
495
496
497
498
499
500
501
502
503
504int phy_start_aneg(struct phy_device *phydev)
505{
506 int err;
507
508 if (!phydev->drv)
509 return -EIO;
510
511 mutex_lock(&phydev->lock);
512
513 if (AUTONEG_DISABLE == phydev->autoneg)
514 phy_sanitize_settings(phydev);
515
516 err = phy_config_aneg(phydev);
517 if (err < 0)
518 goto out_unlock;
519
520 if (phy_is_started(phydev))
521 err = phy_check_link_status(phydev);
522out_unlock:
523 mutex_unlock(&phydev->lock);
524
525 return err;
526}
527EXPORT_SYMBOL(phy_start_aneg);
528
529static int phy_poll_aneg_done(struct phy_device *phydev)
530{
531 unsigned int retries = 100;
532 int ret;
533
534 do {
535 msleep(100);
536 ret = phy_aneg_done(phydev);
537 } while (!ret && --retries);
538
539 if (!ret)
540 return -ETIMEDOUT;
541
542 return ret < 0 ? ret : 0;
543}
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558int phy_speed_down(struct phy_device *phydev, bool sync)
559{
560 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp);
561 int ret;
562
563 if (phydev->autoneg != AUTONEG_ENABLE)
564 return 0;
565
566 linkmode_copy(adv_tmp, phydev->advertising);
567
568 ret = phy_speed_down_core(phydev);
569 if (ret)
570 return ret;
571
572 linkmode_copy(phydev->adv_old, adv_tmp);
573
574 if (linkmode_equal(phydev->advertising, adv_tmp))
575 return 0;
576
577 ret = phy_config_aneg(phydev);
578 if (ret)
579 return ret;
580
581 return sync ? phy_poll_aneg_done(phydev) : 0;
582}
583EXPORT_SYMBOL_GPL(phy_speed_down);
584
585
586
587
588
589
590
591int phy_speed_up(struct phy_device *phydev)
592{
593 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp);
594
595 if (phydev->autoneg != AUTONEG_ENABLE)
596 return 0;
597
598 if (linkmode_empty(phydev->adv_old))
599 return 0;
600
601 linkmode_copy(adv_tmp, phydev->advertising);
602 linkmode_copy(phydev->advertising, phydev->adv_old);
603 linkmode_zero(phydev->adv_old);
604
605 if (linkmode_equal(phydev->advertising, adv_tmp))
606 return 0;
607
608 return phy_config_aneg(phydev);
609}
610EXPORT_SYMBOL_GPL(phy_speed_up);
611
612
613
614
615
616
617
618
619
620
621
622void phy_start_machine(struct phy_device *phydev)
623{
624 phy_trigger_machine(phydev);
625}
626EXPORT_SYMBOL_GPL(phy_start_machine);
627
628
629
630
631
632
633
634
635
636void phy_stop_machine(struct phy_device *phydev)
637{
638 cancel_delayed_work_sync(&phydev->state_queue);
639
640 mutex_lock(&phydev->lock);
641 if (phy_is_started(phydev))
642 phydev->state = PHY_UP;
643 mutex_unlock(&phydev->lock);
644}
645
646
647
648
649
650
651
652
653
654
655static void phy_error(struct phy_device *phydev)
656{
657 WARN_ON(1);
658
659 mutex_lock(&phydev->lock);
660 phydev->state = PHY_HALTED;
661 mutex_unlock(&phydev->lock);
662
663 phy_trigger_machine(phydev);
664}
665
666
667
668
669
670static int phy_disable_interrupts(struct phy_device *phydev)
671{
672 int err;
673
674
675 err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
676 if (err)
677 return err;
678
679
680 return phy_clear_interrupt(phydev);
681}
682
683
684
685
686
687
688
689
690static irqreturn_t phy_interrupt(int irq, void *phy_dat)
691{
692 struct phy_device *phydev = phy_dat;
693
694 if (phydev->drv->did_interrupt && !phydev->drv->did_interrupt(phydev))
695 return IRQ_NONE;
696
697 if (phydev->drv->handle_interrupt) {
698 if (phydev->drv->handle_interrupt(phydev))
699 goto phy_err;
700 } else {
701
702 phy_trigger_machine(phydev);
703 }
704
705 if (phy_clear_interrupt(phydev))
706 goto phy_err;
707 return IRQ_HANDLED;
708
709phy_err:
710 phy_error(phydev);
711 return IRQ_NONE;
712}
713
714
715
716
717
718static int phy_enable_interrupts(struct phy_device *phydev)
719{
720 int err = phy_clear_interrupt(phydev);
721
722 if (err < 0)
723 return err;
724
725 return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
726}
727
728
729
730
731
732
733
734
735
736void phy_request_interrupt(struct phy_device *phydev)
737{
738 int err;
739
740 err = request_threaded_irq(phydev->irq, NULL, phy_interrupt,
741 IRQF_ONESHOT | IRQF_SHARED,
742 phydev_name(phydev), phydev);
743 if (err) {
744 phydev_warn(phydev, "Error %d requesting IRQ %d, falling back to polling\n",
745 err, phydev->irq);
746 phydev->irq = PHY_POLL;
747 } else {
748 if (phy_enable_interrupts(phydev)) {
749 phydev_warn(phydev, "Can't enable interrupt, falling back to polling\n");
750 phy_free_interrupt(phydev);
751 phydev->irq = PHY_POLL;
752 }
753 }
754}
755EXPORT_SYMBOL(phy_request_interrupt);
756
757
758
759
760
761
762
763
764void phy_free_interrupt(struct phy_device *phydev)
765{
766 phy_disable_interrupts(phydev);
767 free_irq(phydev->irq, phydev);
768}
769EXPORT_SYMBOL(phy_free_interrupt);
770
771
772
773
774
775void phy_stop(struct phy_device *phydev)
776{
777 if (!phy_is_started(phydev)) {
778 WARN(1, "called from state %s\n",
779 phy_state_to_str(phydev->state));
780 return;
781 }
782
783 mutex_lock(&phydev->lock);
784
785 if (phydev->sfp_bus)
786 sfp_upstream_stop(phydev->sfp_bus);
787
788 phydev->state = PHY_HALTED;
789
790 mutex_unlock(&phydev->lock);
791
792 phy_state_machine(&phydev->state_queue.work);
793 phy_stop_machine(phydev);
794
795
796
797
798
799}
800EXPORT_SYMBOL(phy_stop);
801
802
803
804
805
806
807
808
809
810
811
812void phy_start(struct phy_device *phydev)
813{
814 mutex_lock(&phydev->lock);
815
816 if (phydev->state != PHY_READY && phydev->state != PHY_HALTED) {
817 WARN(1, "called from state %s\n",
818 phy_state_to_str(phydev->state));
819 goto out;
820 }
821
822 if (phydev->sfp_bus)
823 sfp_upstream_start(phydev->sfp_bus);
824
825
826 __phy_resume(phydev);
827
828 phydev->state = PHY_UP;
829
830 phy_start_machine(phydev);
831out:
832 mutex_unlock(&phydev->lock);
833}
834EXPORT_SYMBOL(phy_start);
835
836
837
838
839
840void phy_state_machine(struct work_struct *work)
841{
842 struct delayed_work *dwork = to_delayed_work(work);
843 struct phy_device *phydev =
844 container_of(dwork, struct phy_device, state_queue);
845 bool needs_aneg = false, do_suspend = false;
846 enum phy_state old_state;
847 int err = 0;
848
849 mutex_lock(&phydev->lock);
850
851 old_state = phydev->state;
852
853 switch (phydev->state) {
854 case PHY_DOWN:
855 case PHY_READY:
856 break;
857 case PHY_UP:
858 needs_aneg = true;
859
860 break;
861 case PHY_NOLINK:
862 case PHY_RUNNING:
863 err = phy_check_link_status(phydev);
864 break;
865 case PHY_HALTED:
866 if (phydev->link) {
867 phydev->link = 0;
868 phy_link_down(phydev, true);
869 }
870 do_suspend = true;
871 break;
872 }
873
874 mutex_unlock(&phydev->lock);
875
876 if (needs_aneg)
877 err = phy_start_aneg(phydev);
878 else if (do_suspend)
879 phy_suspend(phydev);
880
881 if (err < 0)
882 phy_error(phydev);
883
884 if (old_state != phydev->state) {
885 phydev_dbg(phydev, "PHY state change %s -> %s\n",
886 phy_state_to_str(old_state),
887 phy_state_to_str(phydev->state));
888 if (phydev->drv && phydev->drv->link_change_notify)
889 phydev->drv->link_change_notify(phydev);
890 }
891
892
893
894
895
896
897
898
899
900 mutex_lock(&phydev->lock);
901 if (phy_polling_mode(phydev) && phy_is_started(phydev))
902 phy_queue_state_machine(phydev, PHY_STATE_TIME);
903 mutex_unlock(&phydev->lock);
904}
905
906
907
908
909
910
911
912
913void phy_mac_interrupt(struct phy_device *phydev)
914{
915
916 phy_trigger_machine(phydev);
917}
918EXPORT_SYMBOL(phy_mac_interrupt);
919
920static void mmd_eee_adv_to_linkmode(unsigned long *advertising, u16 eee_adv)
921{
922 linkmode_zero(advertising);
923
924 if (eee_adv & MDIO_EEE_100TX)
925 linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
926 advertising);
927 if (eee_adv & MDIO_EEE_1000T)
928 linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
929 advertising);
930 if (eee_adv & MDIO_EEE_10GT)
931 linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
932 advertising);
933 if (eee_adv & MDIO_EEE_1000KX)
934 linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
935 advertising);
936 if (eee_adv & MDIO_EEE_10GKX4)
937 linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
938 advertising);
939 if (eee_adv & MDIO_EEE_10GKR)
940 linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
941 advertising);
942}
943
944
945
946
947
948
949
950
951
952
953
954int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable)
955{
956 if (!phydev->drv)
957 return -EIO;
958
959
960
961 if (phydev->duplex == DUPLEX_FULL) {
962 __ETHTOOL_DECLARE_LINK_MODE_MASK(common);
963 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp);
964 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv);
965 int eee_lp, eee_cap, eee_adv;
966 int status;
967 u32 cap;
968
969
970 status = phy_read_status(phydev);
971 if (status)
972 return status;
973
974
975 eee_cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
976 if (eee_cap <= 0)
977 goto eee_exit_err;
978
979 cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
980 if (!cap)
981 goto eee_exit_err;
982
983
984
985
986 eee_lp = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
987 if (eee_lp <= 0)
988 goto eee_exit_err;
989
990 eee_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
991 if (eee_adv <= 0)
992 goto eee_exit_err;
993
994 mmd_eee_adv_to_linkmode(adv, eee_adv);
995 mmd_eee_adv_to_linkmode(lp, eee_lp);
996 linkmode_and(common, adv, lp);
997
998 if (!phy_check_valid(phydev->speed, phydev->duplex, common))
999 goto eee_exit_err;
1000
1001 if (clk_stop_enable)
1002
1003
1004
1005 phy_set_bits_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1,
1006 MDIO_PCS_CTRL1_CLKSTOP_EN);
1007
1008 return 0;
1009 }
1010eee_exit_err:
1011 return -EPROTONOSUPPORT;
1012}
1013EXPORT_SYMBOL(phy_init_eee);
1014
1015
1016
1017
1018
1019
1020
1021
1022int phy_get_eee_err(struct phy_device *phydev)
1023{
1024 if (!phydev->drv)
1025 return -EIO;
1026
1027 return phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR);
1028}
1029EXPORT_SYMBOL(phy_get_eee_err);
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data)
1040{
1041 int val;
1042
1043 if (!phydev->drv)
1044 return -EIO;
1045
1046
1047 val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
1048 if (val < 0)
1049 return val;
1050 data->supported = mmd_eee_cap_to_ethtool_sup_t(val);
1051
1052
1053 val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
1054 if (val < 0)
1055 return val;
1056 data->advertised = mmd_eee_adv_to_ethtool_adv_t(val);
1057 data->eee_enabled = !!data->advertised;
1058
1059
1060 val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
1061 if (val < 0)
1062 return val;
1063 data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);
1064
1065 data->eee_active = !!(data->advertised & data->lp_advertised);
1066
1067 return 0;
1068}
1069EXPORT_SYMBOL(phy_ethtool_get_eee);
1070
1071
1072
1073
1074
1075
1076
1077
1078int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data)
1079{
1080 int cap, old_adv, adv = 0, ret;
1081
1082 if (!phydev->drv)
1083 return -EIO;
1084
1085
1086 cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
1087 if (cap < 0)
1088 return cap;
1089
1090 old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
1091 if (old_adv < 0)
1092 return old_adv;
1093
1094 if (data->eee_enabled) {
1095 adv = !data->advertised ? cap :
1096 ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap;
1097
1098 adv &= ~phydev->eee_broken_modes;
1099 }
1100
1101 if (old_adv != adv) {
1102 ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);
1103 if (ret < 0)
1104 return ret;
1105
1106
1107
1108
1109 ret = phy_restart_aneg(phydev);
1110 if (ret < 0)
1111 return ret;
1112 }
1113
1114 return 0;
1115}
1116EXPORT_SYMBOL(phy_ethtool_set_eee);
1117
1118int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1119{
1120 if (phydev->drv && phydev->drv->set_wol)
1121 return phydev->drv->set_wol(phydev, wol);
1122
1123 return -EOPNOTSUPP;
1124}
1125EXPORT_SYMBOL(phy_ethtool_set_wol);
1126
1127void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1128{
1129 if (phydev->drv && phydev->drv->get_wol)
1130 phydev->drv->get_wol(phydev, wol);
1131}
1132EXPORT_SYMBOL(phy_ethtool_get_wol);
1133
1134int phy_ethtool_get_link_ksettings(struct net_device *ndev,
1135 struct ethtool_link_ksettings *cmd)
1136{
1137 struct phy_device *phydev = ndev->phydev;
1138
1139 if (!phydev)
1140 return -ENODEV;
1141
1142 phy_ethtool_ksettings_get(phydev, cmd);
1143
1144 return 0;
1145}
1146EXPORT_SYMBOL(phy_ethtool_get_link_ksettings);
1147
1148int phy_ethtool_set_link_ksettings(struct net_device *ndev,
1149 const struct ethtool_link_ksettings *cmd)
1150{
1151 struct phy_device *phydev = ndev->phydev;
1152
1153 if (!phydev)
1154 return -ENODEV;
1155
1156 return phy_ethtool_ksettings_set(phydev, cmd);
1157}
1158EXPORT_SYMBOL(phy_ethtool_set_link_ksettings);
1159
1160int phy_ethtool_nway_reset(struct net_device *ndev)
1161{
1162 struct phy_device *phydev = ndev->phydev;
1163
1164 if (!phydev)
1165 return -ENODEV;
1166
1167 if (!phydev->drv)
1168 return -EIO;
1169
1170 return phy_restart_aneg(phydev);
1171}
1172EXPORT_SYMBOL(phy_ethtool_nway_reset);
1173