This source file includes following definitions.
- mii_get_an
- mii_ethtool_gset
- mii_ethtool_get_link_ksettings
- mii_ethtool_sset
- mii_ethtool_set_link_ksettings
- mii_check_gmii_support
- mii_link_ok
- mii_nway_restart
- mii_check_link
- mii_check_media
- generic_mii_ioctl
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30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/netdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/mii.h>
35
36 static u32 mii_get_an(struct mii_if_info *mii, u16 addr)
37 {
38 int advert;
39
40 advert = mii->mdio_read(mii->dev, mii->phy_id, addr);
41
42 return mii_lpa_to_ethtool_lpa_t(advert);
43 }
44
45
46
47
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51
52
53
54
55 int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
56 {
57 struct net_device *dev = mii->dev;
58 u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0;
59 u32 nego;
60
61 ecmd->supported =
62 (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
63 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
64 SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
65 if (mii->supports_gmii)
66 ecmd->supported |= SUPPORTED_1000baseT_Half |
67 SUPPORTED_1000baseT_Full;
68
69
70 ecmd->port = PORT_MII;
71
72
73 ecmd->transceiver = XCVR_INTERNAL;
74
75
76 ecmd->phy_address = mii->phy_id;
77 ecmd->mdio_support = ETH_MDIO_SUPPORTS_C22;
78
79 ecmd->advertising = ADVERTISED_TP | ADVERTISED_MII;
80
81 bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
82 bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);
83 if (mii->supports_gmii) {
84 ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
85 stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);
86 }
87 if (bmcr & BMCR_ANENABLE) {
88 ecmd->advertising |= ADVERTISED_Autoneg;
89 ecmd->autoneg = AUTONEG_ENABLE;
90
91 ecmd->advertising |= mii_get_an(mii, MII_ADVERTISE);
92 if (mii->supports_gmii)
93 ecmd->advertising |=
94 mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
95
96 if (bmsr & BMSR_ANEGCOMPLETE) {
97 ecmd->lp_advertising = mii_get_an(mii, MII_LPA);
98 ecmd->lp_advertising |=
99 mii_stat1000_to_ethtool_lpa_t(stat1000);
100 } else {
101 ecmd->lp_advertising = 0;
102 }
103
104 nego = ecmd->advertising & ecmd->lp_advertising;
105
106 if (nego & (ADVERTISED_1000baseT_Full |
107 ADVERTISED_1000baseT_Half)) {
108 ethtool_cmd_speed_set(ecmd, SPEED_1000);
109 ecmd->duplex = !!(nego & ADVERTISED_1000baseT_Full);
110 } else if (nego & (ADVERTISED_100baseT_Full |
111 ADVERTISED_100baseT_Half)) {
112 ethtool_cmd_speed_set(ecmd, SPEED_100);
113 ecmd->duplex = !!(nego & ADVERTISED_100baseT_Full);
114 } else {
115 ethtool_cmd_speed_set(ecmd, SPEED_10);
116 ecmd->duplex = !!(nego & ADVERTISED_10baseT_Full);
117 }
118 } else {
119 ecmd->autoneg = AUTONEG_DISABLE;
120
121 ethtool_cmd_speed_set(ecmd,
122 ((bmcr & BMCR_SPEED1000 &&
123 (bmcr & BMCR_SPEED100) == 0) ?
124 SPEED_1000 :
125 ((bmcr & BMCR_SPEED100) ?
126 SPEED_100 : SPEED_10)));
127 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
128 }
129
130 mii->full_duplex = ecmd->duplex;
131
132
133
134 return 0;
135 }
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143
144
145 void mii_ethtool_get_link_ksettings(struct mii_if_info *mii,
146 struct ethtool_link_ksettings *cmd)
147 {
148 struct net_device *dev = mii->dev;
149 u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0;
150 u32 nego, supported, advertising, lp_advertising;
151
152 supported = (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
153 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
154 SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
155 if (mii->supports_gmii)
156 supported |= SUPPORTED_1000baseT_Half |
157 SUPPORTED_1000baseT_Full;
158
159
160 cmd->base.port = PORT_MII;
161
162
163 cmd->base.phy_address = mii->phy_id;
164 cmd->base.mdio_support = ETH_MDIO_SUPPORTS_C22;
165
166 advertising = ADVERTISED_TP | ADVERTISED_MII;
167
168 bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
169 bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);
170 if (mii->supports_gmii) {
171 ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
172 stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);
173 }
174 if (bmcr & BMCR_ANENABLE) {
175 advertising |= ADVERTISED_Autoneg;
176 cmd->base.autoneg = AUTONEG_ENABLE;
177
178 advertising |= mii_get_an(mii, MII_ADVERTISE);
179 if (mii->supports_gmii)
180 advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
181
182 if (bmsr & BMSR_ANEGCOMPLETE) {
183 lp_advertising = mii_get_an(mii, MII_LPA);
184 lp_advertising |=
185 mii_stat1000_to_ethtool_lpa_t(stat1000);
186 } else {
187 lp_advertising = 0;
188 }
189
190 nego = advertising & lp_advertising;
191
192 if (nego & (ADVERTISED_1000baseT_Full |
193 ADVERTISED_1000baseT_Half)) {
194 cmd->base.speed = SPEED_1000;
195 cmd->base.duplex = !!(nego & ADVERTISED_1000baseT_Full);
196 } else if (nego & (ADVERTISED_100baseT_Full |
197 ADVERTISED_100baseT_Half)) {
198 cmd->base.speed = SPEED_100;
199 cmd->base.duplex = !!(nego & ADVERTISED_100baseT_Full);
200 } else {
201 cmd->base.speed = SPEED_10;
202 cmd->base.duplex = !!(nego & ADVERTISED_10baseT_Full);
203 }
204 } else {
205 cmd->base.autoneg = AUTONEG_DISABLE;
206
207 cmd->base.speed = ((bmcr & BMCR_SPEED1000 &&
208 (bmcr & BMCR_SPEED100) == 0) ?
209 SPEED_1000 :
210 ((bmcr & BMCR_SPEED100) ?
211 SPEED_100 : SPEED_10));
212 cmd->base.duplex = (bmcr & BMCR_FULLDPLX) ?
213 DUPLEX_FULL : DUPLEX_HALF;
214
215 lp_advertising = 0;
216 }
217
218 mii->full_duplex = cmd->base.duplex;
219
220 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
221 supported);
222 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
223 advertising);
224 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
225 lp_advertising);
226
227
228 }
229
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234
235
236
237 int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
238 {
239 struct net_device *dev = mii->dev;
240 u32 speed = ethtool_cmd_speed(ecmd);
241
242 if (speed != SPEED_10 &&
243 speed != SPEED_100 &&
244 speed != SPEED_1000)
245 return -EINVAL;
246 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
247 return -EINVAL;
248 if (ecmd->port != PORT_MII)
249 return -EINVAL;
250 if (ecmd->transceiver != XCVR_INTERNAL)
251 return -EINVAL;
252 if (ecmd->phy_address != mii->phy_id)
253 return -EINVAL;
254 if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE)
255 return -EINVAL;
256 if ((speed == SPEED_1000) && (!mii->supports_gmii))
257 return -EINVAL;
258
259
260
261 if (ecmd->autoneg == AUTONEG_ENABLE) {
262 u32 bmcr, advert, tmp;
263 u32 advert2 = 0, tmp2 = 0;
264
265 if ((ecmd->advertising & (ADVERTISED_10baseT_Half |
266 ADVERTISED_10baseT_Full |
267 ADVERTISED_100baseT_Half |
268 ADVERTISED_100baseT_Full |
269 ADVERTISED_1000baseT_Half |
270 ADVERTISED_1000baseT_Full)) == 0)
271 return -EINVAL;
272
273
274 advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);
275 tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
276 if (mii->supports_gmii) {
277 advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
278 tmp2 = advert2 & ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
279 }
280 tmp |= ethtool_adv_to_mii_adv_t(ecmd->advertising);
281
282 if (mii->supports_gmii)
283 tmp2 |=
284 ethtool_adv_to_mii_ctrl1000_t(ecmd->advertising);
285 if (advert != tmp) {
286 mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);
287 mii->advertising = tmp;
288 }
289 if ((mii->supports_gmii) && (advert2 != tmp2))
290 mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);
291
292
293 bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
294 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
295 mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr);
296
297 mii->force_media = 0;
298 } else {
299 u32 bmcr, tmp;
300
301
302 bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
303 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
304 BMCR_SPEED1000 | BMCR_FULLDPLX);
305 if (speed == SPEED_1000)
306 tmp |= BMCR_SPEED1000;
307 else if (speed == SPEED_100)
308 tmp |= BMCR_SPEED100;
309 if (ecmd->duplex == DUPLEX_FULL) {
310 tmp |= BMCR_FULLDPLX;
311 mii->full_duplex = 1;
312 } else
313 mii->full_duplex = 0;
314 if (bmcr != tmp)
315 mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp);
316
317 mii->force_media = 1;
318 }
319 return 0;
320 }
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327
328
329 int mii_ethtool_set_link_ksettings(struct mii_if_info *mii,
330 const struct ethtool_link_ksettings *cmd)
331 {
332 struct net_device *dev = mii->dev;
333 u32 speed = cmd->base.speed;
334
335 if (speed != SPEED_10 &&
336 speed != SPEED_100 &&
337 speed != SPEED_1000)
338 return -EINVAL;
339 if (cmd->base.duplex != DUPLEX_HALF && cmd->base.duplex != DUPLEX_FULL)
340 return -EINVAL;
341 if (cmd->base.port != PORT_MII)
342 return -EINVAL;
343 if (cmd->base.phy_address != mii->phy_id)
344 return -EINVAL;
345 if (cmd->base.autoneg != AUTONEG_DISABLE &&
346 cmd->base.autoneg != AUTONEG_ENABLE)
347 return -EINVAL;
348 if ((speed == SPEED_1000) && (!mii->supports_gmii))
349 return -EINVAL;
350
351
352
353 if (cmd->base.autoneg == AUTONEG_ENABLE) {
354 u32 bmcr, advert, tmp;
355 u32 advert2 = 0, tmp2 = 0;
356 u32 advertising;
357
358 ethtool_convert_link_mode_to_legacy_u32(
359 &advertising, cmd->link_modes.advertising);
360
361 if ((advertising & (ADVERTISED_10baseT_Half |
362 ADVERTISED_10baseT_Full |
363 ADVERTISED_100baseT_Half |
364 ADVERTISED_100baseT_Full |
365 ADVERTISED_1000baseT_Half |
366 ADVERTISED_1000baseT_Full)) == 0)
367 return -EINVAL;
368
369
370 advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);
371 tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
372 if (mii->supports_gmii) {
373 advert2 = mii->mdio_read(dev, mii->phy_id,
374 MII_CTRL1000);
375 tmp2 = advert2 &
376 ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
377 }
378 tmp |= ethtool_adv_to_mii_adv_t(advertising);
379
380 if (mii->supports_gmii)
381 tmp2 |= ethtool_adv_to_mii_ctrl1000_t(advertising);
382 if (advert != tmp) {
383 mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);
384 mii->advertising = tmp;
385 }
386 if ((mii->supports_gmii) && (advert2 != tmp2))
387 mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);
388
389
390 bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
391 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
392 mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr);
393
394 mii->force_media = 0;
395 } else {
396 u32 bmcr, tmp;
397
398
399 bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
400 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
401 BMCR_SPEED1000 | BMCR_FULLDPLX);
402 if (speed == SPEED_1000)
403 tmp |= BMCR_SPEED1000;
404 else if (speed == SPEED_100)
405 tmp |= BMCR_SPEED100;
406 if (cmd->base.duplex == DUPLEX_FULL) {
407 tmp |= BMCR_FULLDPLX;
408 mii->full_duplex = 1;
409 } else {
410 mii->full_duplex = 0;
411 }
412 if (bmcr != tmp)
413 mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp);
414
415 mii->force_media = 1;
416 }
417 return 0;
418 }
419
420
421
422
423
424 int mii_check_gmii_support(struct mii_if_info *mii)
425 {
426 int reg;
427
428 reg = mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);
429 if (reg & BMSR_ESTATEN) {
430 reg = mii->mdio_read(mii->dev, mii->phy_id, MII_ESTATUS);
431 if (reg & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF))
432 return 1;
433 }
434
435 return 0;
436 }
437
438
439
440
441
442
443
444 int mii_link_ok (struct mii_if_info *mii)
445 {
446
447 mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);
448 if (mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR) & BMSR_LSTATUS)
449 return 1;
450 return 0;
451 }
452
453
454
455
456
457
458
459 int mii_nway_restart (struct mii_if_info *mii)
460 {
461 int bmcr;
462 int r = -EINVAL;
463
464
465 bmcr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMCR);
466
467 if (bmcr & BMCR_ANENABLE) {
468 bmcr |= BMCR_ANRESTART;
469 mii->mdio_write(mii->dev, mii->phy_id, MII_BMCR, bmcr);
470 r = 0;
471 }
472
473 return r;
474 }
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481
482
483
484 void mii_check_link (struct mii_if_info *mii)
485 {
486 int cur_link = mii_link_ok(mii);
487 int prev_link = netif_carrier_ok(mii->dev);
488
489 if (cur_link && !prev_link)
490 netif_carrier_on(mii->dev);
491 else if (prev_link && !cur_link)
492 netif_carrier_off(mii->dev);
493 }
494
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502
503
504 unsigned int mii_check_media (struct mii_if_info *mii,
505 unsigned int ok_to_print,
506 unsigned int init_media)
507 {
508 unsigned int old_carrier, new_carrier;
509 int advertise, lpa, media, duplex;
510 int lpa2 = 0;
511
512
513 old_carrier = netif_carrier_ok(mii->dev) ? 1 : 0;
514 new_carrier = (unsigned int) mii_link_ok(mii);
515
516
517
518
519 if ((!init_media) && (old_carrier == new_carrier))
520 return 0;
521
522
523 if (!new_carrier) {
524 netif_carrier_off(mii->dev);
525 if (ok_to_print)
526 netdev_info(mii->dev, "link down\n");
527 return 0;
528 }
529
530
531
532
533 netif_carrier_on(mii->dev);
534
535 if (mii->force_media) {
536 if (ok_to_print)
537 netdev_info(mii->dev, "link up\n");
538 return 0;
539 }
540
541
542 if ((!init_media) && (mii->advertising))
543 advertise = mii->advertising;
544 else {
545 advertise = mii->mdio_read(mii->dev, mii->phy_id, MII_ADVERTISE);
546 mii->advertising = advertise;
547 }
548 lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA);
549 if (mii->supports_gmii)
550 lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000);
551
552
553 media = mii_nway_result(lpa & advertise);
554 duplex = (media & ADVERTISE_FULL) ? 1 : 0;
555 if (lpa2 & LPA_1000FULL)
556 duplex = 1;
557
558 if (ok_to_print)
559 netdev_info(mii->dev, "link up, %uMbps, %s-duplex, lpa 0x%04X\n",
560 lpa2 & (LPA_1000FULL | LPA_1000HALF) ? 1000 :
561 media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ?
562 100 : 10,
563 duplex ? "full" : "half",
564 lpa);
565
566 if ((init_media) || (mii->full_duplex != duplex)) {
567 mii->full_duplex = duplex;
568 return 1;
569 }
570
571 return 0;
572 }
573
574
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576
577
578
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580
581
582
583
584 int generic_mii_ioctl(struct mii_if_info *mii_if,
585 struct mii_ioctl_data *mii_data, int cmd,
586 unsigned int *duplex_chg_out)
587 {
588 int rc = 0;
589 unsigned int duplex_changed = 0;
590
591 if (duplex_chg_out)
592 *duplex_chg_out = 0;
593
594 mii_data->phy_id &= mii_if->phy_id_mask;
595 mii_data->reg_num &= mii_if->reg_num_mask;
596
597 switch(cmd) {
598 case SIOCGMIIPHY:
599 mii_data->phy_id = mii_if->phy_id;
600
601
602 case SIOCGMIIREG:
603 mii_data->val_out =
604 mii_if->mdio_read(mii_if->dev, mii_data->phy_id,
605 mii_data->reg_num);
606 break;
607
608 case SIOCSMIIREG: {
609 u16 val = mii_data->val_in;
610
611 if (mii_data->phy_id == mii_if->phy_id) {
612 switch(mii_data->reg_num) {
613 case MII_BMCR: {
614 unsigned int new_duplex = 0;
615 if (val & (BMCR_RESET|BMCR_ANENABLE))
616 mii_if->force_media = 0;
617 else
618 mii_if->force_media = 1;
619 if (mii_if->force_media &&
620 (val & BMCR_FULLDPLX))
621 new_duplex = 1;
622 if (mii_if->full_duplex != new_duplex) {
623 duplex_changed = 1;
624 mii_if->full_duplex = new_duplex;
625 }
626 break;
627 }
628 case MII_ADVERTISE:
629 mii_if->advertising = val;
630 break;
631 default:
632
633 break;
634 }
635 }
636
637 mii_if->mdio_write(mii_if->dev, mii_data->phy_id,
638 mii_data->reg_num, val);
639 break;
640 }
641
642 default:
643 rc = -EOPNOTSUPP;
644 break;
645 }
646
647 if ((rc == 0) && (duplex_chg_out) && (duplex_changed))
648 *duplex_chg_out = 1;
649
650 return rc;
651 }
652
653 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
654 MODULE_DESCRIPTION ("MII hardware support library");
655 MODULE_LICENSE("GPL");
656
657 EXPORT_SYMBOL(mii_link_ok);
658 EXPORT_SYMBOL(mii_nway_restart);
659 EXPORT_SYMBOL(mii_ethtool_gset);
660 EXPORT_SYMBOL(mii_ethtool_get_link_ksettings);
661 EXPORT_SYMBOL(mii_ethtool_sset);
662 EXPORT_SYMBOL(mii_ethtool_set_link_ksettings);
663 EXPORT_SYMBOL(mii_check_link);
664 EXPORT_SYMBOL(mii_check_media);
665 EXPORT_SYMBOL(mii_check_gmii_support);
666 EXPORT_SYMBOL(generic_mii_ioctl);
667