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15
16#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17
18#include <linux/kernel.h>
19#include <linux/string.h>
20#include <linux/errno.h>
21#include <linux/unistd.h>
22#include <linux/interrupt.h>
23#include <linux/delay.h>
24#include <linux/netdevice.h>
25#include <linux/etherdevice.h>
26#include <linux/skbuff.h>
27#include <linux/mm.h>
28#include <linux/module.h>
29#include <linux/mii.h>
30#include <linux/ethtool.h>
31#include <linux/phy.h>
32#include <linux/timer.h>
33#include <linux/workqueue.h>
34#include <linux/mdio.h>
35#include <linux/io.h>
36#include <linux/uaccess.h>
37#include <linux/atomic.h>
38
39#include <asm/irq.h>
40
41static const char *phy_speed_to_str(int speed)
42{
43 switch (speed) {
44 case SPEED_10:
45 return "10Mbps";
46 case SPEED_100:
47 return "100Mbps";
48 case SPEED_1000:
49 return "1Gbps";
50 case SPEED_2500:
51 return "2.5Gbps";
52 case SPEED_10000:
53 return "10Gbps";
54 case SPEED_UNKNOWN:
55 return "Unknown";
56 default:
57 return "Unsupported (update phy.c)";
58 }
59}
60
61#define PHY_STATE_STR(_state) \
62 case PHY_##_state: \
63 return __stringify(_state); \
64
65static const char *phy_state_to_str(enum phy_state st)
66{
67 switch (st) {
68 PHY_STATE_STR(DOWN)
69 PHY_STATE_STR(STARTING)
70 PHY_STATE_STR(READY)
71 PHY_STATE_STR(PENDING)
72 PHY_STATE_STR(UP)
73 PHY_STATE_STR(AN)
74 PHY_STATE_STR(RUNNING)
75 PHY_STATE_STR(NOLINK)
76 PHY_STATE_STR(FORCING)
77 PHY_STATE_STR(CHANGELINK)
78 PHY_STATE_STR(HALTED)
79 PHY_STATE_STR(RESUMING)
80 }
81
82 return NULL;
83}
84
85
86
87
88
89
90void phy_print_status(struct phy_device *phydev)
91{
92 if (phydev->link) {
93 netdev_info(phydev->attached_dev,
94 "Link is Up - %s/%s - flow control %s\n",
95 phy_speed_to_str(phydev->speed),
96 DUPLEX_FULL == phydev->duplex ? "Full" : "Half",
97 phydev->pause ? "rx/tx" : "off");
98 } else {
99 netdev_info(phydev->attached_dev, "Link is Down\n");
100 }
101}
102EXPORT_SYMBOL(phy_print_status);
103
104
105
106
107
108
109
110
111
112
113static int phy_clear_interrupt(struct phy_device *phydev)
114{
115 if (phydev->drv->ack_interrupt)
116 return phydev->drv->ack_interrupt(phydev);
117
118 return 0;
119}
120
121
122
123
124
125
126
127
128static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts)
129{
130 phydev->interrupts = interrupts;
131 if (phydev->drv->config_intr)
132 return phydev->drv->config_intr(phydev);
133
134 return 0;
135}
136
137
138
139
140
141
142
143
144
145
146static inline int phy_aneg_done(struct phy_device *phydev)
147{
148 if (phydev->drv->aneg_done)
149 return phydev->drv->aneg_done(phydev);
150
151 return genphy_aneg_done(phydev);
152}
153
154
155
156
157struct phy_setting {
158 int speed;
159 int duplex;
160 u32 setting;
161};
162
163
164static const struct phy_setting settings[] = {
165 {
166 .speed = SPEED_10000,
167 .duplex = DUPLEX_FULL,
168 .setting = SUPPORTED_10000baseKR_Full,
169 },
170 {
171 .speed = SPEED_10000,
172 .duplex = DUPLEX_FULL,
173 .setting = SUPPORTED_10000baseKX4_Full,
174 },
175 {
176 .speed = SPEED_10000,
177 .duplex = DUPLEX_FULL,
178 .setting = SUPPORTED_10000baseT_Full,
179 },
180 {
181 .speed = SPEED_2500,
182 .duplex = DUPLEX_FULL,
183 .setting = SUPPORTED_2500baseX_Full,
184 },
185 {
186 .speed = SPEED_1000,
187 .duplex = DUPLEX_FULL,
188 .setting = SUPPORTED_1000baseKX_Full,
189 },
190 {
191 .speed = SPEED_1000,
192 .duplex = DUPLEX_FULL,
193 .setting = SUPPORTED_1000baseT_Full,
194 },
195 {
196 .speed = SPEED_1000,
197 .duplex = DUPLEX_HALF,
198 .setting = SUPPORTED_1000baseT_Half,
199 },
200 {
201 .speed = SPEED_100,
202 .duplex = DUPLEX_FULL,
203 .setting = SUPPORTED_100baseT_Full,
204 },
205 {
206 .speed = SPEED_100,
207 .duplex = DUPLEX_HALF,
208 .setting = SUPPORTED_100baseT_Half,
209 },
210 {
211 .speed = SPEED_10,
212 .duplex = DUPLEX_FULL,
213 .setting = SUPPORTED_10baseT_Full,
214 },
215 {
216 .speed = SPEED_10,
217 .duplex = DUPLEX_HALF,
218 .setting = SUPPORTED_10baseT_Half,
219 },
220};
221
222#define MAX_NUM_SETTINGS ARRAY_SIZE(settings)
223
224
225
226
227
228
229
230
231
232
233
234static inline unsigned int phy_find_setting(int speed, int duplex)
235{
236 unsigned int idx = 0;
237
238 while (idx < ARRAY_SIZE(settings) &&
239 (settings[idx].speed != speed || settings[idx].duplex != duplex))
240 idx++;
241
242 return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1;
243}
244
245
246
247
248
249
250
251
252
253
254
255static inline unsigned int phy_find_valid(unsigned int idx, u32 features)
256{
257 while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features))
258 idx++;
259
260 return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1;
261}
262
263
264
265
266
267
268
269
270
271
272static inline bool phy_check_valid(int speed, int duplex, u32 features)
273{
274 unsigned int idx;
275
276 idx = phy_find_valid(phy_find_setting(speed, duplex), features);
277
278 return settings[idx].speed == speed && settings[idx].duplex == duplex &&
279 (settings[idx].setting & features);
280}
281
282
283
284
285
286
287
288
289
290static void phy_sanitize_settings(struct phy_device *phydev)
291{
292 u32 features = phydev->supported;
293 unsigned int idx;
294
295
296 if ((features & SUPPORTED_Autoneg) == 0)
297 phydev->autoneg = AUTONEG_DISABLE;
298
299 idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex),
300 features);
301
302 phydev->speed = settings[idx].speed;
303 phydev->duplex = settings[idx].duplex;
304}
305
306
307
308
309
310
311
312
313
314
315
316
317
318int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd)
319{
320 u32 speed = ethtool_cmd_speed(cmd);
321
322 if (cmd->phy_address != phydev->mdio.addr)
323 return -EINVAL;
324
325
326 cmd->advertising &= phydev->supported;
327
328
329 if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE)
330 return -EINVAL;
331
332 if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0)
333 return -EINVAL;
334
335 if (cmd->autoneg == AUTONEG_DISABLE &&
336 ((speed != SPEED_1000 &&
337 speed != SPEED_100 &&
338 speed != SPEED_10) ||
339 (cmd->duplex != DUPLEX_HALF &&
340 cmd->duplex != DUPLEX_FULL)))
341 return -EINVAL;
342
343 phydev->autoneg = cmd->autoneg;
344
345 phydev->speed = speed;
346
347 phydev->advertising = cmd->advertising;
348
349 if (AUTONEG_ENABLE == cmd->autoneg)
350 phydev->advertising |= ADVERTISED_Autoneg;
351 else
352 phydev->advertising &= ~ADVERTISED_Autoneg;
353
354 phydev->duplex = cmd->duplex;
355
356 phydev->mdix = cmd->eth_tp_mdix_ctrl;
357
358
359 phy_start_aneg(phydev);
360
361 return 0;
362}
363EXPORT_SYMBOL(phy_ethtool_sset);
364
365int phy_ethtool_ksettings_set(struct phy_device *phydev,
366 const struct ethtool_link_ksettings *cmd)
367{
368 u8 autoneg = cmd->base.autoneg;
369 u8 duplex = cmd->base.duplex;
370 u32 speed = cmd->base.speed;
371 u32 advertising;
372
373 if (cmd->base.phy_address != phydev->mdio.addr)
374 return -EINVAL;
375
376 ethtool_convert_link_mode_to_legacy_u32(&advertising,
377 cmd->link_modes.advertising);
378
379
380 advertising &= phydev->supported;
381
382
383 if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE)
384 return -EINVAL;
385
386 if (autoneg == AUTONEG_ENABLE && advertising == 0)
387 return -EINVAL;
388
389 if (autoneg == AUTONEG_DISABLE &&
390 ((speed != SPEED_1000 &&
391 speed != SPEED_100 &&
392 speed != SPEED_10) ||
393 (duplex != DUPLEX_HALF &&
394 duplex != DUPLEX_FULL)))
395 return -EINVAL;
396
397 phydev->autoneg = autoneg;
398
399 phydev->speed = speed;
400
401 phydev->advertising = advertising;
402
403 if (autoneg == AUTONEG_ENABLE)
404 phydev->advertising |= ADVERTISED_Autoneg;
405 else
406 phydev->advertising &= ~ADVERTISED_Autoneg;
407
408 phydev->duplex = duplex;
409
410 phydev->mdix = cmd->base.eth_tp_mdix_ctrl;
411
412
413 phy_start_aneg(phydev);
414
415 return 0;
416}
417EXPORT_SYMBOL(phy_ethtool_ksettings_set);
418
419int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd)
420{
421 cmd->supported = phydev->supported;
422
423 cmd->advertising = phydev->advertising;
424 cmd->lp_advertising = phydev->lp_advertising;
425
426 ethtool_cmd_speed_set(cmd, phydev->speed);
427 cmd->duplex = phydev->duplex;
428 if (phydev->interface == PHY_INTERFACE_MODE_MOCA)
429 cmd->port = PORT_BNC;
430 else
431 cmd->port = PORT_MII;
432 cmd->phy_address = phydev->mdio.addr;
433 cmd->transceiver = phy_is_internal(phydev) ?
434 XCVR_INTERNAL : XCVR_EXTERNAL;
435 cmd->autoneg = phydev->autoneg;
436 cmd->eth_tp_mdix_ctrl = phydev->mdix;
437
438 return 0;
439}
440EXPORT_SYMBOL(phy_ethtool_gset);
441
442int phy_ethtool_ksettings_get(struct phy_device *phydev,
443 struct ethtool_link_ksettings *cmd)
444{
445 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
446 phydev->supported);
447
448 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
449 phydev->advertising);
450
451 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
452 phydev->lp_advertising);
453
454 cmd->base.speed = phydev->speed;
455 cmd->base.duplex = phydev->duplex;
456 if (phydev->interface == PHY_INTERFACE_MODE_MOCA)
457 cmd->base.port = PORT_BNC;
458 else
459 cmd->base.port = PORT_MII;
460
461 cmd->base.phy_address = phydev->mdio.addr;
462 cmd->base.autoneg = phydev->autoneg;
463 cmd->base.eth_tp_mdix_ctrl = phydev->mdix;
464
465 return 0;
466}
467EXPORT_SYMBOL(phy_ethtool_ksettings_get);
468
469
470
471
472
473
474
475
476
477
478
479int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd)
480{
481 struct mii_ioctl_data *mii_data = if_mii(ifr);
482 u16 val = mii_data->val_in;
483 bool change_autoneg = false;
484
485 switch (cmd) {
486 case SIOCGMIIPHY:
487 mii_data->phy_id = phydev->mdio.addr;
488
489
490 case SIOCGMIIREG:
491 mii_data->val_out = mdiobus_read(phydev->mdio.bus,
492 mii_data->phy_id,
493 mii_data->reg_num);
494 return 0;
495
496 case SIOCSMIIREG:
497 if (mii_data->phy_id == phydev->mdio.addr) {
498 switch (mii_data->reg_num) {
499 case MII_BMCR:
500 if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) {
501 if (phydev->autoneg == AUTONEG_ENABLE)
502 change_autoneg = true;
503 phydev->autoneg = AUTONEG_DISABLE;
504 if (val & BMCR_FULLDPLX)
505 phydev->duplex = DUPLEX_FULL;
506 else
507 phydev->duplex = DUPLEX_HALF;
508 if (val & BMCR_SPEED1000)
509 phydev->speed = SPEED_1000;
510 else if (val & BMCR_SPEED100)
511 phydev->speed = SPEED_100;
512 else phydev->speed = SPEED_10;
513 }
514 else {
515 if (phydev->autoneg == AUTONEG_DISABLE)
516 change_autoneg = true;
517 phydev->autoneg = AUTONEG_ENABLE;
518 }
519 break;
520 case MII_ADVERTISE:
521 phydev->advertising = mii_adv_to_ethtool_adv_t(val);
522 change_autoneg = true;
523 break;
524 default:
525
526 break;
527 }
528 }
529
530 mdiobus_write(phydev->mdio.bus, mii_data->phy_id,
531 mii_data->reg_num, val);
532
533 if (mii_data->phy_id == phydev->mdio.addr &&
534 mii_data->reg_num == MII_BMCR &&
535 val & BMCR_RESET)
536 return phy_init_hw(phydev);
537
538 if (change_autoneg)
539 return phy_start_aneg(phydev);
540
541 return 0;
542
543 case SIOCSHWTSTAMP:
544 if (phydev->drv->hwtstamp)
545 return phydev->drv->hwtstamp(phydev, ifr);
546
547
548 default:
549 return -EOPNOTSUPP;
550 }
551}
552EXPORT_SYMBOL(phy_mii_ioctl);
553
554
555
556
557
558
559
560
561
562
563int phy_start_aneg(struct phy_device *phydev)
564{
565 int err;
566
567 mutex_lock(&phydev->lock);
568
569 if (AUTONEG_DISABLE == phydev->autoneg)
570 phy_sanitize_settings(phydev);
571
572
573 phydev->lp_advertising = 0;
574
575 err = phydev->drv->config_aneg(phydev);
576 if (err < 0)
577 goto out_unlock;
578
579 if (phydev->state != PHY_HALTED) {
580 if (AUTONEG_ENABLE == phydev->autoneg) {
581 phydev->state = PHY_AN;
582 phydev->link_timeout = PHY_AN_TIMEOUT;
583 } else {
584 phydev->state = PHY_FORCING;
585 phydev->link_timeout = PHY_FORCE_TIMEOUT;
586 }
587 }
588
589out_unlock:
590 mutex_unlock(&phydev->lock);
591 return err;
592}
593EXPORT_SYMBOL(phy_start_aneg);
594
595
596
597
598
599
600
601
602
603
604
605void phy_start_machine(struct phy_device *phydev)
606{
607 queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ);
608}
609
610
611
612
613
614
615
616
617
618
619static void phy_trigger_machine(struct phy_device *phydev)
620{
621 cancel_delayed_work_sync(&phydev->state_queue);
622 queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0);
623}
624
625
626
627
628
629
630
631
632
633void phy_stop_machine(struct phy_device *phydev)
634{
635 cancel_delayed_work_sync(&phydev->state_queue);
636
637 mutex_lock(&phydev->lock);
638 if (phydev->state > PHY_UP)
639 phydev->state = PHY_UP;
640 mutex_unlock(&phydev->lock);
641}
642
643
644
645
646
647
648
649
650
651
652static void phy_error(struct phy_device *phydev)
653{
654 mutex_lock(&phydev->lock);
655 phydev->state = PHY_HALTED;
656 mutex_unlock(&phydev->lock);
657
658 phy_trigger_machine(phydev);
659}
660
661
662
663
664
665
666
667
668
669static irqreturn_t phy_interrupt(int irq, void *phy_dat)
670{
671 struct phy_device *phydev = phy_dat;
672
673 if (PHY_HALTED == phydev->state)
674 return IRQ_NONE;
675
676
677
678
679
680
681 disable_irq_nosync(irq);
682 atomic_inc(&phydev->irq_disable);
683
684 queue_work(system_power_efficient_wq, &phydev->phy_queue);
685
686 return IRQ_HANDLED;
687}
688
689
690
691
692
693static int phy_enable_interrupts(struct phy_device *phydev)
694{
695 int err = phy_clear_interrupt(phydev);
696
697 if (err < 0)
698 return err;
699
700 return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
701}
702
703
704
705
706
707static int phy_disable_interrupts(struct phy_device *phydev)
708{
709 int err;
710
711
712 err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
713 if (err)
714 goto phy_err;
715
716
717 err = phy_clear_interrupt(phydev);
718 if (err)
719 goto phy_err;
720
721 return 0;
722
723phy_err:
724 phy_error(phydev);
725
726 return err;
727}
728
729
730
731
732
733
734
735
736
737
738
739int phy_start_interrupts(struct phy_device *phydev)
740{
741 atomic_set(&phydev->irq_disable, 0);
742 if (request_irq(phydev->irq, phy_interrupt,
743 IRQF_SHARED,
744 "phy_interrupt",
745 phydev) < 0) {
746 pr_warn("%s: Can't get IRQ %d (PHY)\n",
747 phydev->mdio.bus->name, phydev->irq);
748 phydev->irq = PHY_POLL;
749 return 0;
750 }
751
752 return phy_enable_interrupts(phydev);
753}
754EXPORT_SYMBOL(phy_start_interrupts);
755
756
757
758
759
760int phy_stop_interrupts(struct phy_device *phydev)
761{
762 int err = phy_disable_interrupts(phydev);
763
764 if (err)
765 phy_error(phydev);
766
767 free_irq(phydev->irq, phydev);
768
769
770
771
772
773
774 cancel_work_sync(&phydev->phy_queue);
775
776
777
778
779 while (atomic_dec_return(&phydev->irq_disable) >= 0)
780 enable_irq(phydev->irq);
781
782 return err;
783}
784EXPORT_SYMBOL(phy_stop_interrupts);
785
786
787
788
789
790void phy_change(struct work_struct *work)
791{
792 struct phy_device *phydev =
793 container_of(work, struct phy_device, phy_queue);
794
795 if (phy_interrupt_is_valid(phydev)) {
796 if (phydev->drv->did_interrupt &&
797 !phydev->drv->did_interrupt(phydev))
798 goto ignore;
799
800 if (phy_disable_interrupts(phydev))
801 goto phy_err;
802 }
803
804 mutex_lock(&phydev->lock);
805 if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state))
806 phydev->state = PHY_CHANGELINK;
807 mutex_unlock(&phydev->lock);
808
809 if (phy_interrupt_is_valid(phydev)) {
810 atomic_dec(&phydev->irq_disable);
811 enable_irq(phydev->irq);
812
813
814 if (PHY_HALTED != phydev->state &&
815 phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED))
816 goto irq_enable_err;
817 }
818
819
820 phy_trigger_machine(phydev);
821 return;
822
823ignore:
824 atomic_dec(&phydev->irq_disable);
825 enable_irq(phydev->irq);
826 return;
827
828irq_enable_err:
829 disable_irq(phydev->irq);
830 atomic_inc(&phydev->irq_disable);
831phy_err:
832 phy_error(phydev);
833}
834
835
836
837
838
839void phy_stop(struct phy_device *phydev)
840{
841 mutex_lock(&phydev->lock);
842
843 if (PHY_HALTED == phydev->state)
844 goto out_unlock;
845
846 if (phy_interrupt_is_valid(phydev)) {
847
848 phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
849
850
851 phy_clear_interrupt(phydev);
852 }
853
854 phydev->state = PHY_HALTED;
855
856out_unlock:
857 mutex_unlock(&phydev->lock);
858
859
860
861
862
863}
864EXPORT_SYMBOL(phy_stop);
865
866
867
868
869
870
871
872
873
874
875
876void phy_start(struct phy_device *phydev)
877{
878 bool do_resume = false;
879 int err = 0;
880
881 mutex_lock(&phydev->lock);
882
883 switch (phydev->state) {
884 case PHY_STARTING:
885 phydev->state = PHY_PENDING;
886 break;
887 case PHY_READY:
888 phydev->state = PHY_UP;
889 break;
890 case PHY_HALTED:
891
892 if (phydev->irq != PHY_POLL) {
893 err = phy_enable_interrupts(phydev);
894 if (err < 0)
895 break;
896 }
897
898 phydev->state = PHY_RESUMING;
899 do_resume = true;
900 break;
901 default:
902 break;
903 }
904 mutex_unlock(&phydev->lock);
905
906
907 if (do_resume)
908 phy_resume(phydev);
909
910 phy_trigger_machine(phydev);
911}
912EXPORT_SYMBOL(phy_start);
913
914
915
916
917
918void phy_state_machine(struct work_struct *work)
919{
920 struct delayed_work *dwork = to_delayed_work(work);
921 struct phy_device *phydev =
922 container_of(dwork, struct phy_device, state_queue);
923 bool needs_aneg = false, do_suspend = false;
924 enum phy_state old_state;
925 int err = 0;
926 int old_link;
927
928 mutex_lock(&phydev->lock);
929
930 old_state = phydev->state;
931
932 if (phydev->drv->link_change_notify)
933 phydev->drv->link_change_notify(phydev);
934
935 switch (phydev->state) {
936 case PHY_DOWN:
937 case PHY_STARTING:
938 case PHY_READY:
939 case PHY_PENDING:
940 break;
941 case PHY_UP:
942 needs_aneg = true;
943
944 phydev->link_timeout = PHY_AN_TIMEOUT;
945
946 break;
947 case PHY_AN:
948 err = phy_read_status(phydev);
949 if (err < 0)
950 break;
951
952
953 if (!phydev->link) {
954 phydev->state = PHY_NOLINK;
955 netif_carrier_off(phydev->attached_dev);
956 phydev->adjust_link(phydev->attached_dev);
957 break;
958 }
959
960
961 err = phy_aneg_done(phydev);
962 if (err < 0)
963 break;
964
965
966 if (err > 0) {
967 phydev->state = PHY_RUNNING;
968 netif_carrier_on(phydev->attached_dev);
969 phydev->adjust_link(phydev->attached_dev);
970
971 } else if (0 == phydev->link_timeout--)
972 needs_aneg = true;
973 break;
974 case PHY_NOLINK:
975 if (phy_interrupt_is_valid(phydev))
976 break;
977
978 err = phy_read_status(phydev);
979 if (err)
980 break;
981
982 if (phydev->link) {
983 if (AUTONEG_ENABLE == phydev->autoneg) {
984 err = phy_aneg_done(phydev);
985 if (err < 0)
986 break;
987
988 if (!err) {
989 phydev->state = PHY_AN;
990 phydev->link_timeout = PHY_AN_TIMEOUT;
991 break;
992 }
993 }
994 phydev->state = PHY_RUNNING;
995 netif_carrier_on(phydev->attached_dev);
996 phydev->adjust_link(phydev->attached_dev);
997 }
998 break;
999 case PHY_FORCING:
1000 err = genphy_update_link(phydev);
1001 if (err)
1002 break;
1003
1004 if (phydev->link) {
1005 phydev->state = PHY_RUNNING;
1006 netif_carrier_on(phydev->attached_dev);
1007 } else {
1008 if (0 == phydev->link_timeout--)
1009 needs_aneg = true;
1010 }
1011
1012 phydev->adjust_link(phydev->attached_dev);
1013 break;
1014 case PHY_RUNNING:
1015
1016
1017
1018 if (phydev->irq == PHY_POLL) {
1019 old_link = phydev->link;
1020 err = phy_read_status(phydev);
1021 if (err)
1022 break;
1023
1024 if (old_link != phydev->link)
1025 phydev->state = PHY_CHANGELINK;
1026 }
1027 break;
1028 case PHY_CHANGELINK:
1029 err = phy_read_status(phydev);
1030 if (err)
1031 break;
1032
1033 if (phydev->link) {
1034 phydev->state = PHY_RUNNING;
1035 netif_carrier_on(phydev->attached_dev);
1036 } else {
1037 phydev->state = PHY_NOLINK;
1038 netif_carrier_off(phydev->attached_dev);
1039 }
1040
1041 phydev->adjust_link(phydev->attached_dev);
1042
1043 if (phy_interrupt_is_valid(phydev))
1044 err = phy_config_interrupt(phydev,
1045 PHY_INTERRUPT_ENABLED);
1046 break;
1047 case PHY_HALTED:
1048 if (phydev->link) {
1049 phydev->link = 0;
1050 netif_carrier_off(phydev->attached_dev);
1051 phydev->adjust_link(phydev->attached_dev);
1052 do_suspend = true;
1053 }
1054 break;
1055 case PHY_RESUMING:
1056 if (AUTONEG_ENABLE == phydev->autoneg) {
1057 err = phy_aneg_done(phydev);
1058 if (err < 0)
1059 break;
1060
1061
1062
1063
1064 if (err > 0) {
1065 err = phy_read_status(phydev);
1066 if (err)
1067 break;
1068
1069 if (phydev->link) {
1070 phydev->state = PHY_RUNNING;
1071 netif_carrier_on(phydev->attached_dev);
1072 } else {
1073 phydev->state = PHY_NOLINK;
1074 }
1075 phydev->adjust_link(phydev->attached_dev);
1076 } else {
1077 phydev->state = PHY_AN;
1078 phydev->link_timeout = PHY_AN_TIMEOUT;
1079 }
1080 } else {
1081 err = phy_read_status(phydev);
1082 if (err)
1083 break;
1084
1085 if (phydev->link) {
1086 phydev->state = PHY_RUNNING;
1087 netif_carrier_on(phydev->attached_dev);
1088 } else {
1089 phydev->state = PHY_NOLINK;
1090 }
1091 phydev->adjust_link(phydev->attached_dev);
1092 }
1093 break;
1094 }
1095
1096 mutex_unlock(&phydev->lock);
1097
1098 if (needs_aneg)
1099 err = phy_start_aneg(phydev);
1100 else if (do_suspend)
1101 phy_suspend(phydev);
1102
1103 if (err < 0)
1104 phy_error(phydev);
1105
1106 phydev_dbg(phydev, "PHY state change %s -> %s\n",
1107 phy_state_to_str(old_state),
1108 phy_state_to_str(phydev->state));
1109
1110
1111
1112
1113
1114 if (phydev->irq == PHY_POLL)
1115 queue_delayed_work(system_power_efficient_wq, &phydev->state_queue,
1116 PHY_STATE_TIME * HZ);
1117}
1118
1119void phy_mac_interrupt(struct phy_device *phydev, int new_link)
1120{
1121 phydev->link = new_link;
1122
1123
1124 queue_work(system_power_efficient_wq, &phydev->phy_queue);
1125}
1126EXPORT_SYMBOL(phy_mac_interrupt);
1127
1128static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad,
1129 int addr)
1130{
1131
1132 bus->write(bus, addr, MII_MMD_CTRL, devad);
1133
1134
1135 bus->write(bus, addr, MII_MMD_DATA, prtad);
1136
1137
1138 bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
1139}
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155int phy_read_mmd_indirect(struct phy_device *phydev, int prtad, int devad)
1156{
1157 struct phy_driver *phydrv = phydev->drv;
1158 int addr = phydev->mdio.addr;
1159 int value = -1;
1160
1161 if (!phydrv->read_mmd_indirect) {
1162 struct mii_bus *bus = phydev->mdio.bus;
1163
1164 mutex_lock(&bus->mdio_lock);
1165 mmd_phy_indirect(bus, prtad, devad, addr);
1166
1167
1168 value = bus->read(bus, addr, MII_MMD_DATA);
1169 mutex_unlock(&bus->mdio_lock);
1170 } else {
1171 value = phydrv->read_mmd_indirect(phydev, prtad, devad, addr);
1172 }
1173 return value;
1174}
1175EXPORT_SYMBOL(phy_read_mmd_indirect);
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192void phy_write_mmd_indirect(struct phy_device *phydev, int prtad,
1193 int devad, u32 data)
1194{
1195 struct phy_driver *phydrv = phydev->drv;
1196 int addr = phydev->mdio.addr;
1197
1198 if (!phydrv->write_mmd_indirect) {
1199 struct mii_bus *bus = phydev->mdio.bus;
1200
1201 mutex_lock(&bus->mdio_lock);
1202 mmd_phy_indirect(bus, prtad, devad, addr);
1203
1204
1205 bus->write(bus, addr, MII_MMD_DATA, data);
1206 mutex_unlock(&bus->mdio_lock);
1207 } else {
1208 phydrv->write_mmd_indirect(phydev, prtad, devad, addr, data);
1209 }
1210}
1211EXPORT_SYMBOL(phy_write_mmd_indirect);
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable)
1224{
1225
1226
1227
1228
1229
1230 if ((phydev->duplex == DUPLEX_FULL) &&
1231 ((phydev->interface == PHY_INTERFACE_MODE_MII) ||
1232 (phydev->interface == PHY_INTERFACE_MODE_GMII) ||
1233 phy_interface_is_rgmii(phydev) ||
1234 phy_is_internal(phydev))) {
1235 int eee_lp, eee_cap, eee_adv;
1236 u32 lp, cap, adv;
1237 int status;
1238
1239
1240 status = phy_read_status(phydev);
1241 if (status)
1242 return status;
1243
1244
1245 eee_cap = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE,
1246 MDIO_MMD_PCS);
1247 if (eee_cap <= 0)
1248 goto eee_exit_err;
1249
1250 cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
1251 if (!cap)
1252 goto eee_exit_err;
1253
1254
1255
1256
1257 eee_lp = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE,
1258 MDIO_MMD_AN);
1259 if (eee_lp <= 0)
1260 goto eee_exit_err;
1261
1262 eee_adv = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV,
1263 MDIO_MMD_AN);
1264 if (eee_adv <= 0)
1265 goto eee_exit_err;
1266
1267 adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv);
1268 lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp);
1269 if (!phy_check_valid(phydev->speed, phydev->duplex, lp & adv))
1270 goto eee_exit_err;
1271
1272 if (clk_stop_enable) {
1273
1274
1275
1276 int val = phy_read_mmd_indirect(phydev, MDIO_CTRL1,
1277 MDIO_MMD_PCS);
1278 if (val < 0)
1279 return val;
1280
1281 val |= MDIO_PCS_CTRL1_CLKSTOP_EN;
1282 phy_write_mmd_indirect(phydev, MDIO_CTRL1,
1283 MDIO_MMD_PCS, val);
1284 }
1285
1286 return 0;
1287 }
1288eee_exit_err:
1289 return -EPROTONOSUPPORT;
1290}
1291EXPORT_SYMBOL(phy_init_eee);
1292
1293
1294
1295
1296
1297
1298
1299
1300int phy_get_eee_err(struct phy_device *phydev)
1301{
1302 return phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_WK_ERR, MDIO_MMD_PCS);
1303}
1304EXPORT_SYMBOL(phy_get_eee_err);
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data)
1315{
1316 int val;
1317
1318
1319 val = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE, MDIO_MMD_PCS);
1320 if (val < 0)
1321 return val;
1322 data->supported = mmd_eee_cap_to_ethtool_sup_t(val);
1323
1324
1325 val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN);
1326 if (val < 0)
1327 return val;
1328 data->advertised = mmd_eee_adv_to_ethtool_adv_t(val);
1329
1330
1331 val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE, MDIO_MMD_AN);
1332 if (val < 0)
1333 return val;
1334 data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);
1335
1336 return 0;
1337}
1338EXPORT_SYMBOL(phy_ethtool_get_eee);
1339
1340
1341
1342
1343
1344
1345
1346
1347int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data)
1348{
1349 int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised);
1350
1351 phy_write_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN, val);
1352
1353 return 0;
1354}
1355EXPORT_SYMBOL(phy_ethtool_set_eee);
1356
1357int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1358{
1359 if (phydev->drv->set_wol)
1360 return phydev->drv->set_wol(phydev, wol);
1361
1362 return -EOPNOTSUPP;
1363}
1364EXPORT_SYMBOL(phy_ethtool_set_wol);
1365
1366void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1367{
1368 if (phydev->drv->get_wol)
1369 phydev->drv->get_wol(phydev, wol);
1370}
1371EXPORT_SYMBOL(phy_ethtool_get_wol);
1372
1373int phy_ethtool_get_link_ksettings(struct net_device *ndev,
1374 struct ethtool_link_ksettings *cmd)
1375{
1376 struct phy_device *phydev = ndev->phydev;
1377
1378 if (!phydev)
1379 return -ENODEV;
1380
1381 return phy_ethtool_ksettings_get(phydev, cmd);
1382}
1383EXPORT_SYMBOL(phy_ethtool_get_link_ksettings);
1384
1385int phy_ethtool_set_link_ksettings(struct net_device *ndev,
1386 const struct ethtool_link_ksettings *cmd)
1387{
1388 struct phy_device *phydev = ndev->phydev;
1389
1390 if (!phydev)
1391 return -ENODEV;
1392
1393 return phy_ethtool_ksettings_set(phydev, cmd);
1394}
1395EXPORT_SYMBOL(phy_ethtool_set_link_ksettings);
1396