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Merge tag 'wireless-drivers-next-for-davem-2017-11-03' of git://git.kernel.org/pub...
[thirdparty/linux.git] / drivers / net / phy / phylink.c
CommitLineData
9525ae83
RK		 1/*
2 * phylink models the MAC to optional PHY connection, supporting
3 * technologies such as SFP cages where the PHY is hot-pluggable.
4 *
5 * Copyright (C) 2015 Russell King
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/ethtool.h>
12#include <linux/export.h>
13#include <linux/gpio/consumer.h>
14#include <linux/netdevice.h>
15#include <linux/of.h>
16#include <linux/of_mdio.h>
17#include <linux/phy.h>
18#include <linux/phy_fixed.h>
19#include <linux/phylink.h>
20#include <linux/rtnetlink.h>
21#include <linux/spinlock.h>
22#include <linux/workqueue.h>
23
ce0aa27f 24#include "sfp.h"
9525ae83
RK		 25#include "swphy.h"
26
27#define SUPPORTED_INTERFACES \
28 (SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_FIBRE | \
29 SUPPORTED_BNC | SUPPORTED_AUI | SUPPORTED_Backplane)
30#define ADVERTISED_INTERFACES \
31 (ADVERTISED_TP | ADVERTISED_MII | ADVERTISED_FIBRE | \
32 ADVERTISED_BNC | ADVERTISED_AUI | ADVERTISED_Backplane)
33
34enum {
35 PHYLINK_DISABLE_STOPPED,
ce0aa27f 36 PHYLINK_DISABLE_LINK,
9525ae83
RK		 37};
38
39struct phylink {
40 struct net_device *netdev;
41 const struct phylink_mac_ops *ops;
42
43 unsigned long phylink_disable_state; /* bitmask of disables */
44 struct phy_device *phydev;
45 phy_interface_t link_interface; /* PHY_INTERFACE_xxx */
46 u8 link_an_mode; /* MLO_AN_xxx */
47 u8 link_port; /* The current non-phy ethtool port */
48 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
49
50 /* The link configuration settings */
51 struct phylink_link_state link_config;
52 struct gpio_desc *link_gpio;
53
54 struct mutex state_mutex;
55 struct phylink_link_state phy_state;
56 struct work_struct resolve;
57
58 bool mac_link_dropped;
ce0aa27f
RK		 59
60 struct sfp_bus *sfp_bus;
9525ae83
RK		 61};
62
63static inline void linkmode_zero(unsigned long *dst)
64{
65 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
66}
67
68static inline void linkmode_copy(unsigned long *dst, const unsigned long *src)
69{
70 bitmap_copy(dst, src, __ETHTOOL_LINK_MODE_MASK_NBITS);
71}
72
73static inline void linkmode_and(unsigned long *dst, const unsigned long *a,
74 const unsigned long *b)
75{
76 bitmap_and(dst, a, b, __ETHTOOL_LINK_MODE_MASK_NBITS);
77}
78
79static inline void linkmode_or(unsigned long *dst, const unsigned long *a,
80 const unsigned long *b)
81{
82 bitmap_or(dst, a, b, __ETHTOOL_LINK_MODE_MASK_NBITS);
83}
84
85static inline bool linkmode_empty(const unsigned long *src)
86{
87 return bitmap_empty(src, __ETHTOOL_LINK_MODE_MASK_NBITS);
88}
89
90void phylink_set_port_modes(unsigned long *mask)
91{
92 phylink_set(mask, TP);
93 phylink_set(mask, AUI);
94 phylink_set(mask, MII);
95 phylink_set(mask, FIBRE);
96 phylink_set(mask, BNC);
97 phylink_set(mask, Backplane);
98}
99EXPORT_SYMBOL_GPL(phylink_set_port_modes);
100
101static int phylink_is_empty_linkmode(const unsigned long *linkmode)
102{
103 __ETHTOOL_DECLARE_LINK_MODE_MASK(tmp) = { 0, };
104
105 phylink_set_port_modes(tmp);
106 phylink_set(tmp, Autoneg);
107 phylink_set(tmp, Pause);
108 phylink_set(tmp, Asym_Pause);
109
110 bitmap_andnot(tmp, linkmode, tmp, __ETHTOOL_LINK_MODE_MASK_NBITS);
111
112 return linkmode_empty(tmp);
113}
114
115static const char *phylink_an_mode_str(unsigned int mode)
116{
117 static const char *modestr[] = {
118 [MLO_AN_PHY] = "phy",
119 [MLO_AN_FIXED] = "fixed",
120 [MLO_AN_SGMII] = "SGMII",
121 [MLO_AN_8023Z] = "802.3z",
122 };
123
124 return mode < ARRAY_SIZE(modestr) ? modestr[mode] : "unknown";
125}
126
127static int phylink_validate(struct phylink *pl, unsigned long *supported,
128 struct phylink_link_state *state)
129{
130 pl->ops->validate(pl->netdev, supported, state);
131
132 return phylink_is_empty_linkmode(supported) ? -EINVAL : 0;
133}
134
135static int phylink_parse_fixedlink(struct phylink *pl, struct device_node *np)
136{
137 struct device_node *fixed_node;
138 const struct phy_setting *s;
139 struct gpio_desc *desc;
140 const __be32 *fixed_prop;
141 u32 speed;
142 int ret, len;
143
144 fixed_node = of_get_child_by_name(np, "fixed-link");
145 if (fixed_node) {
146 ret = of_property_read_u32(fixed_node, "speed", &speed);
147
148 pl->link_config.speed = speed;
149 pl->link_config.duplex = DUPLEX_HALF;
150
151 if (of_property_read_bool(fixed_node, "full-duplex"))
152 pl->link_config.duplex = DUPLEX_FULL;
153
154 /* We treat the "pause" and "asym-pause" terminology as
155 * defining the link partner's ability. */
156 if (of_property_read_bool(fixed_node, "pause"))
157 pl->link_config.pause |= MLO_PAUSE_SYM;
158 if (of_property_read_bool(fixed_node, "asym-pause"))
159 pl->link_config.pause |= MLO_PAUSE_ASYM;
160
161 if (ret == 0) {
162 desc = fwnode_get_named_gpiod(&fixed_node->fwnode,
163 "link-gpios", 0,
164 GPIOD_IN, "?");
165
166 if (!IS_ERR(desc))
167 pl->link_gpio = desc;
168 else if (desc == ERR_PTR(-EPROBE_DEFER))
169 ret = -EPROBE_DEFER;
170 }
171 of_node_put(fixed_node);
172
173 if (ret)
174 return ret;
175 } else {
176 fixed_prop = of_get_property(np, "fixed-link", &len);
177 if (!fixed_prop) {
178 netdev_err(pl->netdev, "broken fixed-link?\n");
179 return -EINVAL;
180 }
181 if (len == 5 * sizeof(*fixed_prop)) {
182 pl->link_config.duplex = be32_to_cpu(fixed_prop[1]) ?
183 DUPLEX_FULL : DUPLEX_HALF;
184 pl->link_config.speed = be32_to_cpu(fixed_prop[2]);
185 if (be32_to_cpu(fixed_prop[3]))
186 pl->link_config.pause |= MLO_PAUSE_SYM;
187 if (be32_to_cpu(fixed_prop[4]))
188 pl->link_config.pause |= MLO_PAUSE_ASYM;
189 }
190 }
191
192 if (pl->link_config.speed > SPEED_1000 &&
193 pl->link_config.duplex != DUPLEX_FULL)
194 netdev_warn(pl->netdev, "fixed link specifies half duplex for %dMbps link?\n",
195 pl->link_config.speed);
196
197 bitmap_fill(pl->supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
198 linkmode_copy(pl->link_config.advertising, pl->supported);
199 phylink_validate(pl, pl->supported, &pl->link_config);
200
201 s = phy_lookup_setting(pl->link_config.speed, pl->link_config.duplex,
202 pl->supported,
203 __ETHTOOL_LINK_MODE_MASK_NBITS, true);
204 linkmode_zero(pl->supported);
205 phylink_set(pl->supported, MII);
206 if (s) {
207 __set_bit(s->bit, pl->supported);
208 } else {
209 netdev_warn(pl->netdev, "fixed link %s duplex %dMbps not recognised\n",
210 pl->link_config.duplex == DUPLEX_FULL ? "full" : "half",
211 pl->link_config.speed);
212 }
213
214 linkmode_and(pl->link_config.advertising, pl->link_config.advertising,
215 pl->supported);
216
217 pl->link_config.link = 1;
218 pl->link_config.an_complete = 1;
219
220 return 0;
221}
222
223static int phylink_parse_mode(struct phylink *pl, struct device_node *np)
224{
225 struct device_node *dn;
226 const char *managed;
227
228 dn = of_get_child_by_name(np, "fixed-link");
229 if (dn || of_find_property(np, "fixed-link", NULL))
230 pl->link_an_mode = MLO_AN_FIXED;
231 of_node_put(dn);
232
233 if (of_property_read_string(np, "managed", &managed) == 0 &&
234 strcmp(managed, "in-band-status") == 0) {
235 if (pl->link_an_mode == MLO_AN_FIXED) {
236 netdev_err(pl->netdev,
237 "can't use both fixed-link and in-band-status\n");
238 return -EINVAL;
239 }
240
241 linkmode_zero(pl->supported);
242 phylink_set(pl->supported, MII);
243 phylink_set(pl->supported, Autoneg);
244 phylink_set(pl->supported, Asym_Pause);
245 phylink_set(pl->supported, Pause);
246 pl->link_config.an_enabled = true;
247
248 switch (pl->link_config.interface) {
249 case PHY_INTERFACE_MODE_SGMII:
250 phylink_set(pl->supported, 10baseT_Half);
251 phylink_set(pl->supported, 10baseT_Full);
252 phylink_set(pl->supported, 100baseT_Half);
253 phylink_set(pl->supported, 100baseT_Full);
254 phylink_set(pl->supported, 1000baseT_Half);
255 phylink_set(pl->supported, 1000baseT_Full);
256 pl->link_an_mode = MLO_AN_SGMII;
257 break;
258
259 case PHY_INTERFACE_MODE_1000BASEX:
260 phylink_set(pl->supported, 1000baseX_Full);
261 pl->link_an_mode = MLO_AN_8023Z;
262 break;
263
264 case PHY_INTERFACE_MODE_2500BASEX:
265 phylink_set(pl->supported, 2500baseX_Full);
266 pl->link_an_mode = MLO_AN_8023Z;
267 break;
268
da7c1862
RK		 269 case PHY_INTERFACE_MODE_10GKR:
270 phylink_set(pl->supported, 10baseT_Half);
271 phylink_set(pl->supported, 10baseT_Full);
272 phylink_set(pl->supported, 100baseT_Half);
273 phylink_set(pl->supported, 100baseT_Full);
274 phylink_set(pl->supported, 1000baseT_Half);
275 phylink_set(pl->supported, 1000baseT_Full);
276 phylink_set(pl->supported, 1000baseX_Full);
277 phylink_set(pl->supported, 10000baseKR_Full);
278 phylink_set(pl->supported, 10000baseCR_Full);
279 phylink_set(pl->supported, 10000baseSR_Full);
280 phylink_set(pl->supported, 10000baseLR_Full);
281 phylink_set(pl->supported, 10000baseLRM_Full);
282 phylink_set(pl->supported, 10000baseER_Full);
283 pl->link_an_mode = MLO_AN_SGMII;
284 break;
285
9525ae83
RK		 286 default:
287 netdev_err(pl->netdev,
288 "incorrect link mode %s for in-band status\n",
289 phy_modes(pl->link_config.interface));
290 return -EINVAL;
291 }
292
293 linkmode_copy(pl->link_config.advertising, pl->supported);
294
295 if (phylink_validate(pl, pl->supported, &pl->link_config)) {
296 netdev_err(pl->netdev,
297 "failed to validate link configuration for in-band status\n");
298 return -EINVAL;
299 }
300 }
301
302 return 0;
303}
304
305static void phylink_mac_config(struct phylink *pl,
306 const struct phylink_link_state *state)
307{
308 netdev_dbg(pl->netdev,
309 "%s: mode=%s/%s/%s/%s adv=%*pb pause=%02x link=%u an=%u\n",
310 __func__, phylink_an_mode_str(pl->link_an_mode),
311 phy_modes(state->interface),
312 phy_speed_to_str(state->speed),
313 phy_duplex_to_str(state->duplex),
314 __ETHTOOL_LINK_MODE_MASK_NBITS, state->advertising,
315 state->pause, state->link, state->an_enabled);
316
317 pl->ops->mac_config(pl->netdev, pl->link_an_mode, state);
318}
319
320static void phylink_mac_an_restart(struct phylink *pl)
321{
322 if (pl->link_config.an_enabled &&
323 (pl->link_config.interface == PHY_INTERFACE_MODE_1000BASEX ||
324 pl->link_config.interface == PHY_INTERFACE_MODE_2500BASEX))
325 pl->ops->mac_an_restart(pl->netdev);
326}
327
328static int phylink_get_mac_state(struct phylink *pl, struct phylink_link_state *state)
329{
330 struct net_device *ndev = pl->netdev;
331
332 linkmode_copy(state->advertising, pl->link_config.advertising);
333 linkmode_zero(state->lp_advertising);
334 state->interface = pl->link_config.interface;
335 state->an_enabled = pl->link_config.an_enabled;
336 state->link = 1;
337
338 return pl->ops->mac_link_state(ndev, state);
339}
340
341/* The fixed state is... fixed except for the link state,
342 * which may be determined by a GPIO.
343 */
344static void phylink_get_fixed_state(struct phylink *pl, struct phylink_link_state *state)
345{
346 *state = pl->link_config;
347 if (pl->link_gpio)
348 state->link = !!gpiod_get_value(pl->link_gpio);
349}
350
351/* Flow control is resolved according to our and the link partners
352 * advertisments using the following drawn from the 802.3 specs:
353 * Local device Link partner
354 * Pause AsymDir Pause AsymDir Result
355 * 1 X 1 X TX+RX
356 * 0 1 1 1 RX
357 * 1 1 0 1 TX
358 */
359static void phylink_resolve_flow(struct phylink *pl,
516b29ed 360 struct phylink_link_state *state)
9525ae83
RK		 361{
362 int new_pause = 0;
363
364 if (pl->link_config.pause & MLO_PAUSE_AN) {
365 int pause = 0;
366
367 if (phylink_test(pl->link_config.advertising, Pause))
368 pause |= MLO_PAUSE_SYM;
369 if (phylink_test(pl->link_config.advertising, Asym_Pause))
370 pause |= MLO_PAUSE_ASYM;
371
372 pause &= state->pause;
373
374 if (pause & MLO_PAUSE_SYM)
375 new_pause = MLO_PAUSE_TX | MLO_PAUSE_RX;
376 else if (pause & MLO_PAUSE_ASYM)
377 new_pause = state->pause & MLO_PAUSE_SYM ?
378 MLO_PAUSE_RX : MLO_PAUSE_TX;
379 } else {
380 new_pause = pl->link_config.pause & MLO_PAUSE_TXRX_MASK;
381 }
382
383 state->pause &= ~MLO_PAUSE_TXRX_MASK;
384 state->pause |= new_pause;
385}
386
387static const char *phylink_pause_to_str(int pause)
388{
389 switch (pause & MLO_PAUSE_TXRX_MASK) {
390 case MLO_PAUSE_TX | MLO_PAUSE_RX:
391 return "rx/tx";
392 case MLO_PAUSE_TX:
393 return "tx";
394 case MLO_PAUSE_RX:
395 return "rx";
396 default:
397 return "off";
398 }
399}
400
401static void phylink_resolve(struct work_struct *w)
402{
403 struct phylink *pl = container_of(w, struct phylink, resolve);
404 struct phylink_link_state link_state;
405 struct net_device *ndev = pl->netdev;
406
407 mutex_lock(&pl->state_mutex);
408 if (pl->phylink_disable_state) {
409 pl->mac_link_dropped = false;
410 link_state.link = false;
411 } else if (pl->mac_link_dropped) {
412 link_state.link = false;
413 } else {
414 switch (pl->link_an_mode) {
415 case MLO_AN_PHY:
416 link_state = pl->phy_state;
417 phylink_resolve_flow(pl, &link_state);
418 phylink_mac_config(pl, &link_state);
419 break;
420
421 case MLO_AN_FIXED:
422 phylink_get_fixed_state(pl, &link_state);
423 phylink_mac_config(pl, &link_state);
424 break;
425
426 case MLO_AN_SGMII:
427 phylink_get_mac_state(pl, &link_state);
428 if (pl->phydev) {
429 bool changed = false;
430
431 link_state.link = link_state.link &&
432 pl->phy_state.link;
433
434 if (pl->phy_state.interface !=
435 link_state.interface) {
436 link_state.interface = pl->phy_state.interface;
437 changed = true;
438 }
439
440 /* Propagate the flow control from the PHY
441 * to the MAC. Also propagate the interface
442 * if changed.
443 */
444 if (pl->phy_state.link || changed) {
445 link_state.pause |= pl->phy_state.pause;
446 phylink_resolve_flow(pl, &link_state);
447
448 phylink_mac_config(pl, &link_state);
449 }
450 }
451 break;
452
453 case MLO_AN_8023Z:
454 phylink_get_mac_state(pl, &link_state);
455 break;
456 }
457 }
458
459 if (link_state.link != netif_carrier_ok(ndev)) {
460 if (!link_state.link) {
461 netif_carrier_off(ndev);
462 pl->ops->mac_link_down(ndev, pl->link_an_mode);
463 netdev_info(ndev, "Link is Down\n");
464 } else {
465 pl->ops->mac_link_up(ndev, pl->link_an_mode,
466 pl->phydev);
467
468 netif_carrier_on(ndev);
469
470 netdev_info(ndev,
471 "Link is Up - %s/%s - flow control %s\n",
472 phy_speed_to_str(link_state.speed),
473 phy_duplex_to_str(link_state.duplex),
474 phylink_pause_to_str(link_state.pause));
475 }
476 }
477 if (!link_state.link && pl->mac_link_dropped) {
478 pl->mac_link_dropped = false;
479 queue_work(system_power_efficient_wq, &pl->resolve);
480 }
481 mutex_unlock(&pl->state_mutex);
482}
483
484static void phylink_run_resolve(struct phylink *pl)
485{
486 if (!pl->phylink_disable_state)
487 queue_work(system_power_efficient_wq, &pl->resolve);
488}
489
ce0aa27f
RK		 490static const struct sfp_upstream_ops sfp_phylink_ops;
491
492static int phylink_register_sfp(struct phylink *pl, struct device_node *np)
493{
494 struct device_node *sfp_np;
495
496 sfp_np = of_parse_phandle(np, "sfp", 0);
497 if (!sfp_np)
498 return 0;
499
500 pl->sfp_bus = sfp_register_upstream(sfp_np, pl->netdev, pl,
501 &sfp_phylink_ops);
502 if (!pl->sfp_bus)
503 return -ENOMEM;
504
505 return 0;
506}
507
9525ae83 508struct phylink *phylink_create(struct net_device *ndev, struct device_node *np,
516b29ed
FF		 509 phy_interface_t iface,
510 const struct phylink_mac_ops *ops)
9525ae83
RK		 511{
512 struct phylink *pl;
513 int ret;
514
515 pl = kzalloc(sizeof(*pl), GFP_KERNEL);
516 if (!pl)
517 return ERR_PTR(-ENOMEM);
518
519 mutex_init(&pl->state_mutex);
520 INIT_WORK(&pl->resolve, phylink_resolve);
521 pl->netdev = ndev;
522 pl->phy_state.interface = iface;
523 pl->link_interface = iface;
524 pl->link_port = PORT_MII;
525 pl->link_config.interface = iface;
526 pl->link_config.pause = MLO_PAUSE_AN;
527 pl->link_config.speed = SPEED_UNKNOWN;
528 pl->link_config.duplex = DUPLEX_UNKNOWN;
529 pl->ops = ops;
530 __set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state);
531
532 bitmap_fill(pl->supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
533 linkmode_copy(pl->link_config.advertising, pl->supported);
534 phylink_validate(pl, pl->supported, &pl->link_config);
535
536 ret = phylink_parse_mode(pl, np);
537 if (ret < 0) {
538 kfree(pl);
539 return ERR_PTR(ret);
540 }
541
542 if (pl->link_an_mode == MLO_AN_FIXED) {
543 ret = phylink_parse_fixedlink(pl, np);
544 if (ret < 0) {
545 kfree(pl);
546 return ERR_PTR(ret);
547 }
548 }
549
ce0aa27f
RK		 550 ret = phylink_register_sfp(pl, np);
551 if (ret < 0) {
552 kfree(pl);
553 return ERR_PTR(ret);
554 }
555
9525ae83
RK		 556 return pl;
557}
558EXPORT_SYMBOL_GPL(phylink_create);
559
560void phylink_destroy(struct phylink *pl)
561{
ce0aa27f
RK		 562 if (pl->sfp_bus)
563 sfp_unregister_upstream(pl->sfp_bus);
564
9525ae83
RK		 565 cancel_work_sync(&pl->resolve);
566 kfree(pl);
567}
568EXPORT_SYMBOL_GPL(phylink_destroy);
569
570void phylink_phy_change(struct phy_device *phydev, bool up, bool do_carrier)
571{
572 struct phylink *pl = phydev->phylink;
573
574 mutex_lock(&pl->state_mutex);
575 pl->phy_state.speed = phydev->speed;
576 pl->phy_state.duplex = phydev->duplex;
577 pl->phy_state.pause = MLO_PAUSE_NONE;
578 if (phydev->pause)
579 pl->phy_state.pause |= MLO_PAUSE_SYM;
580 if (phydev->asym_pause)
581 pl->phy_state.pause |= MLO_PAUSE_ASYM;
582 pl->phy_state.interface = phydev->interface;
583 pl->phy_state.link = up;
584 mutex_unlock(&pl->state_mutex);
585
586 phylink_run_resolve(pl);
587
588 netdev_dbg(pl->netdev, "phy link %s %s/%s/%s\n", up ? "up" : "down",
516b29ed 589 phy_modes(phydev->interface),
9525ae83
RK		 590 phy_speed_to_str(phydev->speed),
591 phy_duplex_to_str(phydev->duplex));
592}
593
594static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy)
595{
596 struct phylink_link_state config;
597 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
598 u32 advertising;
599 int ret;
600
601 memset(&config, 0, sizeof(config));
602 ethtool_convert_legacy_u32_to_link_mode(supported, phy->supported);
603 ethtool_convert_legacy_u32_to_link_mode(config.advertising,
604 phy->advertising);
605 config.interface = pl->link_config.interface;
606
607 /*
608 * This is the new way of dealing with flow control for PHYs,
609 * as described by Timur Tabi in commit 529ed1275263 ("net: phy:
610 * phy drivers should not set SUPPORTED_[Asym_]Pause") except
611 * using our validate call to the MAC, we rely upon the MAC
612 * clearing the bits from both supported and advertising fields.
613 */
614 if (phylink_test(supported, Pause))
615 phylink_set(config.advertising, Pause);
616 if (phylink_test(supported, Asym_Pause))
617 phylink_set(config.advertising, Asym_Pause);
618
619 ret = phylink_validate(pl, supported, &config);
620 if (ret)
621 return ret;
622
623 phy->phylink = pl;
624 phy->phy_link_change = phylink_phy_change;
625
626 netdev_info(pl->netdev,
627 "PHY [%s] driver [%s]\n", dev_name(&phy->mdio.dev),
628 phy->drv->name);
629
630 mutex_lock(&phy->lock);
631 mutex_lock(&pl->state_mutex);
632 pl->netdev->phydev = phy;
633 pl->phydev = phy;
634 linkmode_copy(pl->supported, supported);
635 linkmode_copy(pl->link_config.advertising, config.advertising);
636
637 /* Restrict the phy advertisment according to the MAC support. */
638 ethtool_convert_link_mode_to_legacy_u32(&advertising, config.advertising);
639 phy->advertising = advertising;
640 mutex_unlock(&pl->state_mutex);
641 mutex_unlock(&phy->lock);
642
643 netdev_dbg(pl->netdev,
644 "phy: setting supported %*pb advertising 0x%08x\n",
645 __ETHTOOL_LINK_MODE_MASK_NBITS, pl->supported,
646 phy->advertising);
647
648 phy_start_machine(phy);
649 if (phy->irq > 0)
650 phy_start_interrupts(phy);
651
652 return 0;
653}
654
655int phylink_connect_phy(struct phylink *pl, struct phy_device *phy)
656{
657 int ret;
658
659 ret = phy_attach_direct(pl->netdev, phy, 0, pl->link_interface);
660 if (ret)
661 return ret;
662
663 ret = phylink_bringup_phy(pl, phy);
664 if (ret)
665 phy_detach(phy);
666
667 return ret;
668}
669EXPORT_SYMBOL_GPL(phylink_connect_phy);
670
671int phylink_of_phy_connect(struct phylink *pl, struct device_node *dn)
672{
673 struct device_node *phy_node;
674 struct phy_device *phy_dev;
675 int ret;
676
677 /* Fixed links are handled without needing a PHY */
678 if (pl->link_an_mode == MLO_AN_FIXED)
679 return 0;
680
681 phy_node = of_parse_phandle(dn, "phy-handle", 0);
682 if (!phy_node)
683 phy_node = of_parse_phandle(dn, "phy", 0);
684 if (!phy_node)
685 phy_node = of_parse_phandle(dn, "phy-device", 0);
686
687 if (!phy_node) {
688 if (pl->link_an_mode == MLO_AN_PHY) {
689 netdev_err(pl->netdev, "unable to find PHY node\n");
690 return -ENODEV;
691 }
692 return 0;
693 }
694
695 phy_dev = of_phy_attach(pl->netdev, phy_node, 0, pl->link_interface);
696 /* We're done with the phy_node handle */
697 of_node_put(phy_node);
698
699 if (!phy_dev)
700 return -ENODEV;
701
702 ret = phylink_bringup_phy(pl, phy_dev);
703 if (ret)
704 phy_detach(phy_dev);
705
706 return ret;
707}
708EXPORT_SYMBOL_GPL(phylink_of_phy_connect);
709
710void phylink_disconnect_phy(struct phylink *pl)
711{
712 struct phy_device *phy;
713
714 WARN_ON(!lockdep_rtnl_is_held());
715
716 phy = pl->phydev;
717 if (phy) {
718 mutex_lock(&phy->lock);
719 mutex_lock(&pl->state_mutex);
720 pl->netdev->phydev = NULL;
721 pl->phydev = NULL;
722 mutex_unlock(&pl->state_mutex);
723 mutex_unlock(&phy->lock);
724 flush_work(&pl->resolve);
725
726 phy_disconnect(phy);
727 }
728}
729EXPORT_SYMBOL_GPL(phylink_disconnect_phy);
730
731void phylink_mac_change(struct phylink *pl, bool up)
732{
733 if (!up)
734 pl->mac_link_dropped = true;
735 phylink_run_resolve(pl);
736 netdev_dbg(pl->netdev, "mac link %s\n", up ? "up" : "down");
737}
738EXPORT_SYMBOL_GPL(phylink_mac_change);
739
740void phylink_start(struct phylink *pl)
741{
742 WARN_ON(!lockdep_rtnl_is_held());
743
744 netdev_info(pl->netdev, "configuring for %s/%s link mode\n",
745 phylink_an_mode_str(pl->link_an_mode),
746 phy_modes(pl->link_config.interface));
747
748 /* Apply the link configuration to the MAC when starting. This allows
749 * a fixed-link to start with the correct parameters, and also
750 * ensures that we set the appropriate advertisment for Serdes links.
751 */
752 phylink_resolve_flow(pl, &pl->link_config);
753 phylink_mac_config(pl, &pl->link_config);
754
755 clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state);
756 phylink_run_resolve(pl);
757
ce0aa27f
RK		 758 if (pl->sfp_bus)
759 sfp_upstream_start(pl->sfp_bus);
9525ae83
RK		 760 if (pl->phydev)
761 phy_start(pl->phydev);
762}
763EXPORT_SYMBOL_GPL(phylink_start);
764
765void phylink_stop(struct phylink *pl)
766{
767 WARN_ON(!lockdep_rtnl_is_held());
768
769 if (pl->phydev)
770 phy_stop(pl->phydev);
ce0aa27f
RK		 771 if (pl->sfp_bus)
772 sfp_upstream_stop(pl->sfp_bus);
9525ae83
RK		 773
774 set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state);
775 flush_work(&pl->resolve);
776}
777EXPORT_SYMBOL_GPL(phylink_stop);
778
779void phylink_ethtool_get_wol(struct phylink *pl, struct ethtool_wolinfo *wol)
780{
781 WARN_ON(!lockdep_rtnl_is_held());
782
783 wol->supported = 0;
784 wol->wolopts = 0;
785
786 if (pl->phydev)
787 phy_ethtool_get_wol(pl->phydev, wol);
788}
789EXPORT_SYMBOL_GPL(phylink_ethtool_get_wol);
790
791int phylink_ethtool_set_wol(struct phylink *pl, struct ethtool_wolinfo *wol)
792{
793 int ret = -EOPNOTSUPP;
794
795 WARN_ON(!lockdep_rtnl_is_held());
796
797 if (pl->phydev)
798 ret = phy_ethtool_set_wol(pl->phydev, wol);
799
800 return ret;
801}
802EXPORT_SYMBOL_GPL(phylink_ethtool_set_wol);
803
804static void phylink_merge_link_mode(unsigned long *dst, const unsigned long *b)
805{
806 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask);
807
808 linkmode_zero(mask);
809 phylink_set_port_modes(mask);
810
811 linkmode_and(dst, dst, mask);
812 linkmode_or(dst, dst, b);
813}
814
815static void phylink_get_ksettings(const struct phylink_link_state *state,
816 struct ethtool_link_ksettings *kset)
817{
818 phylink_merge_link_mode(kset->link_modes.advertising, state->advertising);
819 linkmode_copy(kset->link_modes.lp_advertising, state->lp_advertising);
820 kset->base.speed = state->speed;
821 kset->base.duplex = state->duplex;
822 kset->base.autoneg = state->an_enabled ? AUTONEG_ENABLE :
823 AUTONEG_DISABLE;
824}
825
826int phylink_ethtool_ksettings_get(struct phylink *pl,
516b29ed 827 struct ethtool_link_ksettings *kset)
9525ae83
RK		 828{
829 struct phylink_link_state link_state;
830
831 WARN_ON(!lockdep_rtnl_is_held());
832
833 if (pl->phydev) {
834 phy_ethtool_ksettings_get(pl->phydev, kset);
835 } else {
836 kset->base.port = pl->link_port;
837 }
838
839 linkmode_copy(kset->link_modes.supported, pl->supported);
840
841 switch (pl->link_an_mode) {
842 case MLO_AN_FIXED:
843 /* We are using fixed settings. Report these as the
844 * current link settings - and note that these also
845 * represent the supported speeds/duplex/pause modes.
846 */
847 phylink_get_fixed_state(pl, &link_state);
848 phylink_get_ksettings(&link_state, kset);
849 break;
850
851 case MLO_AN_SGMII:
852 /* If there is a phy attached, then use the reported
853 * settings from the phy with no modification.
854 */
855 if (pl->phydev)
856 break;
857
858 case MLO_AN_8023Z:
859 phylink_get_mac_state(pl, &link_state);
860
861 /* The MAC is reporting the link results from its own PCS
862 * layer via in-band status. Report these as the current
863 * link settings.
864 */
865 phylink_get_ksettings(&link_state, kset);
866 break;
867 }
868
869 return 0;
870}
871EXPORT_SYMBOL_GPL(phylink_ethtool_ksettings_get);
872
873int phylink_ethtool_ksettings_set(struct phylink *pl,
516b29ed 874 const struct ethtool_link_ksettings *kset)
9525ae83
RK		 875{
876 struct ethtool_link_ksettings our_kset;
877 struct phylink_link_state config;
878 int ret;
879
880 WARN_ON(!lockdep_rtnl_is_held());
881
882 if (kset->base.autoneg != AUTONEG_DISABLE &&
883 kset->base.autoneg != AUTONEG_ENABLE)
884 return -EINVAL;
885
886 config = pl->link_config;
887
888 /* Mask out unsupported advertisments */
889 linkmode_and(config.advertising, kset->link_modes.advertising,
890 pl->supported);
891
892 /* FIXME: should we reject autoneg if phy/mac does not support it? */
893 if (kset->base.autoneg == AUTONEG_DISABLE) {
894 const struct phy_setting *s;
895
896 /* Autonegotiation disabled, select a suitable speed and
897 * duplex.
898 */
899 s = phy_lookup_setting(kset->base.speed, kset->base.duplex,
900 pl->supported,
901 __ETHTOOL_LINK_MODE_MASK_NBITS, false);
902 if (!s)
903 return -EINVAL;
904
905 /* If we have a fixed link (as specified by firmware), refuse
906 * to change link parameters.
907 */
908 if (pl->link_an_mode == MLO_AN_FIXED &&
909 (s->speed != pl->link_config.speed ||
910 s->duplex != pl->link_config.duplex))
911 return -EINVAL;
912
913 config.speed = s->speed;
914 config.duplex = s->duplex;
915 config.an_enabled = false;
916
917 __clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising);
918 } else {
919 /* If we have a fixed link, refuse to enable autonegotiation */
920 if (pl->link_an_mode == MLO_AN_FIXED)
921 return -EINVAL;
922
923 config.speed = SPEED_UNKNOWN;
924 config.duplex = DUPLEX_UNKNOWN;
925 config.an_enabled = true;
926
927 __set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising);
928 }
929
930 if (phylink_validate(pl, pl->supported, &config))
931 return -EINVAL;
932
933 /* If autonegotiation is enabled, we must have an advertisment */
934 if (config.an_enabled && phylink_is_empty_linkmode(config.advertising))
935 return -EINVAL;
936
937 our_kset = *kset;
938 linkmode_copy(our_kset.link_modes.advertising, config.advertising);
939 our_kset.base.speed = config.speed;
940 our_kset.base.duplex = config.duplex;
941
942 /* If we have a PHY, configure the phy */
943 if (pl->phydev) {
944 ret = phy_ethtool_ksettings_set(pl->phydev, &our_kset);
945 if (ret)
946 return ret;
947 }
948
949 mutex_lock(&pl->state_mutex);
950 /* Configure the MAC to match the new settings */
951 linkmode_copy(pl->link_config.advertising, our_kset.link_modes.advertising);
952 pl->link_config.speed = our_kset.base.speed;
953 pl->link_config.duplex = our_kset.base.duplex;
954 pl->link_config.an_enabled = our_kset.base.autoneg != AUTONEG_DISABLE;
955
956 if (!test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) {
957 phylink_mac_config(pl, &pl->link_config);
958 phylink_mac_an_restart(pl);
959 }
960 mutex_unlock(&pl->state_mutex);
961
d18c2a1b 962 return 0;
9525ae83
RK		 963}
964EXPORT_SYMBOL_GPL(phylink_ethtool_ksettings_set);
965
966int phylink_ethtool_nway_reset(struct phylink *pl)
967{
968 int ret = 0;
969
970 WARN_ON(!lockdep_rtnl_is_held());
971
972 if (pl->phydev)
973 ret = phy_restart_aneg(pl->phydev);
974 phylink_mac_an_restart(pl);
975
976 return ret;
977}
978EXPORT_SYMBOL_GPL(phylink_ethtool_nway_reset);
979
980void phylink_ethtool_get_pauseparam(struct phylink *pl,
981 struct ethtool_pauseparam *pause)
982{
983 WARN_ON(!lockdep_rtnl_is_held());
984
985 pause->autoneg = !!(pl->link_config.pause & MLO_PAUSE_AN);
986 pause->rx_pause = !!(pl->link_config.pause & MLO_PAUSE_RX);
987 pause->tx_pause = !!(pl->link_config.pause & MLO_PAUSE_TX);
988}
989EXPORT_SYMBOL_GPL(phylink_ethtool_get_pauseparam);
990
991int phylink_ethtool_set_pauseparam(struct phylink *pl,
992 struct ethtool_pauseparam *pause)
993{
994 struct phylink_link_state *config = &pl->link_config;
995
996 WARN_ON(!lockdep_rtnl_is_held());
997
998 if (!phylink_test(pl->supported, Pause) &&
999 !phylink_test(pl->supported, Asym_Pause))
1000 return -EOPNOTSUPP;
1001
1002 if (!phylink_test(pl->supported, Asym_Pause) &&
1003 !pause->autoneg && pause->rx_pause != pause->tx_pause)
1004 return -EINVAL;
1005
1006 config->pause &= ~(MLO_PAUSE_AN | MLO_PAUSE_TXRX_MASK);
1007
1008 if (pause->autoneg)
1009 config->pause |= MLO_PAUSE_AN;
1010 if (pause->rx_pause)
1011 config->pause |= MLO_PAUSE_RX;
1012 if (pause->tx_pause)
1013 config->pause |= MLO_PAUSE_TX;
1014
1015 if (!test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) {
1016 switch (pl->link_an_mode) {
1017 case MLO_AN_PHY:
1018 /* Silently mark the carrier down, and then trigger a resolve */
1019 netif_carrier_off(pl->netdev);
1020 phylink_run_resolve(pl);
1021 break;
1022
1023 case MLO_AN_FIXED:
1024 /* Should we allow fixed links to change against the config? */
1025 phylink_resolve_flow(pl, config);
1026 phylink_mac_config(pl, config);
1027 break;
1028
1029 case MLO_AN_SGMII:
1030 case MLO_AN_8023Z:
1031 phylink_mac_config(pl, config);
1032 phylink_mac_an_restart(pl);
1033 break;
1034 }
1035 }
1036
1037 return 0;
1038}
1039EXPORT_SYMBOL_GPL(phylink_ethtool_set_pauseparam);
1040
770a1ad5
RK		 1041int phylink_ethtool_get_module_info(struct phylink *pl,
1042 struct ethtool_modinfo *modinfo)
1043{
1044 int ret = -EOPNOTSUPP;
1045
1046 WARN_ON(!lockdep_rtnl_is_held());
1047
1048 if (pl->sfp_bus)
1049 ret = sfp_get_module_info(pl->sfp_bus, modinfo);
1050
1051 return ret;
1052}
1053EXPORT_SYMBOL_GPL(phylink_ethtool_get_module_info);
1054
1055int phylink_ethtool_get_module_eeprom(struct phylink *pl,
1056 struct ethtool_eeprom *ee, u8 *buf)
1057{
1058 int ret = -EOPNOTSUPP;
1059
1060 WARN_ON(!lockdep_rtnl_is_held());
1061
1062 if (pl->sfp_bus)
1063 ret = sfp_get_module_eeprom(pl->sfp_bus, ee, buf);
1064
1065 return ret;
1066}
1067EXPORT_SYMBOL_GPL(phylink_ethtool_get_module_eeprom);
1068
9525ae83
RK		 1069int phylink_init_eee(struct phylink *pl, bool clk_stop_enable)
1070{
1071 int ret = -EPROTONOSUPPORT;
1072
1073 WARN_ON(!lockdep_rtnl_is_held());
1074
1075 if (pl->phydev)
1076 ret = phy_init_eee(pl->phydev, clk_stop_enable);
1077
1078 return ret;
1079}
1080EXPORT_SYMBOL_GPL(phylink_init_eee);
1081
1082int phylink_get_eee_err(struct phylink *pl)
1083{
1084 int ret = 0;
1085
1086 WARN_ON(!lockdep_rtnl_is_held());
1087
1088 if (pl->phydev)
1089 ret = phy_get_eee_err(pl->phydev);
1090
1091 return ret;
1092}
1093EXPORT_SYMBOL_GPL(phylink_get_eee_err);
1094
1095int phylink_ethtool_get_eee(struct phylink *pl, struct ethtool_eee *eee)
1096{
1097 int ret = -EOPNOTSUPP;
1098
1099 WARN_ON(!lockdep_rtnl_is_held());
1100
1101 if (pl->phydev)
1102 ret = phy_ethtool_get_eee(pl->phydev, eee);
1103
1104 return ret;
1105}
1106EXPORT_SYMBOL_GPL(phylink_ethtool_get_eee);
1107
1108int phylink_ethtool_set_eee(struct phylink *pl, struct ethtool_eee *eee)
1109{
1110 int ret = -EOPNOTSUPP;
1111
1112 WARN_ON(!lockdep_rtnl_is_held());
1113
1114 if (pl->phydev)
1115 ret = phy_ethtool_set_eee(pl->phydev, eee);
1116
1117 return ret;
1118}
1119EXPORT_SYMBOL_GPL(phylink_ethtool_set_eee);
1120
1121/* This emulates MII registers for a fixed-mode phy operating as per the
1122 * passed in state. "aneg" defines if we report negotiation is possible.
1123 *
1124 * FIXME: should deal with negotiation state too.
1125 */
1126static int phylink_mii_emul_read(struct net_device *ndev, unsigned int reg,
1127 struct phylink_link_state *state, bool aneg)
1128{
1129 struct fixed_phy_status fs;
1130 int val;
1131
1132 fs.link = state->link;
1133 fs.speed = state->speed;
1134 fs.duplex = state->duplex;
1135 fs.pause = state->pause & MLO_PAUSE_SYM;
1136 fs.asym_pause = state->pause & MLO_PAUSE_ASYM;
1137
1138 val = swphy_read_reg(reg, &fs);
1139 if (reg == MII_BMSR) {
1140 if (!state->an_complete)
1141 val &= ~BMSR_ANEGCOMPLETE;
1142 if (!aneg)
1143 val &= ~BMSR_ANEGCAPABLE;
1144 }
1145 return val;
1146}
1147
ecbd87b8
RK		 1148static int phylink_phy_read(struct phylink *pl, unsigned int phy_id,
1149 unsigned int reg)
1150{
1151 struct phy_device *phydev = pl->phydev;
1152 int prtad, devad;
1153
1154 if (mdio_phy_id_is_c45(phy_id)) {
1155 prtad = mdio_phy_id_prtad(phy_id);
1156 devad = mdio_phy_id_devad(phy_id);
1157 devad = MII_ADDR_C45 | devad << 16 | reg;
1158 } else if (phydev->is_c45) {
1159 switch (reg) {
1160 case MII_BMCR:
1161 case MII_BMSR:
1162 case MII_PHYSID1:
1163 case MII_PHYSID2:
1164 devad = __ffs(phydev->c45_ids.devices_in_package);
1165 break;
1166 case MII_ADVERTISE:
1167 case MII_LPA:
1168 if (!(phydev->c45_ids.devices_in_package & MDIO_DEVS_AN))
1169 return -EINVAL;
1170 devad = MDIO_MMD_AN;
1171 if (reg == MII_ADVERTISE)
1172 reg = MDIO_AN_ADVERTISE;
1173 else
1174 reg = MDIO_AN_LPA;
1175 break;
1176 default:
1177 return -EINVAL;
1178 }
1179 prtad = phy_id;
1180 devad = MII_ADDR_C45 | devad << 16 | reg;
1181 } else {
1182 prtad = phy_id;
1183 devad = reg;
1184 }
1185 return mdiobus_read(pl->phydev->mdio.bus, prtad, devad);
1186}
1187
1188static int phylink_phy_write(struct phylink *pl, unsigned int phy_id,
1189 unsigned int reg, unsigned int val)
1190{
1191 struct phy_device *phydev = pl->phydev;
1192 int prtad, devad;
1193
1194 if (mdio_phy_id_is_c45(phy_id)) {
1195 prtad = mdio_phy_id_prtad(phy_id);
1196 devad = mdio_phy_id_devad(phy_id);
1197 devad = MII_ADDR_C45 | devad << 16 | reg;
1198 } else if (phydev->is_c45) {
1199 switch (reg) {
1200 case MII_BMCR:
1201 case MII_BMSR:
1202 case MII_PHYSID1:
1203 case MII_PHYSID2:
1204 devad = __ffs(phydev->c45_ids.devices_in_package);
1205 break;
1206 case MII_ADVERTISE:
1207 case MII_LPA:
1208 if (!(phydev->c45_ids.devices_in_package & MDIO_DEVS_AN))
1209 return -EINVAL;
1210 devad = MDIO_MMD_AN;
1211 if (reg == MII_ADVERTISE)
1212 reg = MDIO_AN_ADVERTISE;
1213 else
1214 reg = MDIO_AN_LPA;
1215 break;
1216 default:
1217 return -EINVAL;
1218 }
1219 prtad = phy_id;
1220 devad = MII_ADDR_C45 | devad << 16 | reg;
1221 } else {
1222 prtad = phy_id;
1223 devad = reg;
1224 }
1225
1226 return mdiobus_write(phydev->mdio.bus, prtad, devad, val);
1227}
1228
9525ae83
RK		 1229static int phylink_mii_read(struct phylink *pl, unsigned int phy_id,
1230 unsigned int reg)
1231{
1232 struct phylink_link_state state;
1233 int val = 0xffff;
1234
9525ae83
RK		 1235 switch (pl->link_an_mode) {
1236 case MLO_AN_FIXED:
1237 if (phy_id == 0) {
1238 phylink_get_fixed_state(pl, &state);
1239 val = phylink_mii_emul_read(pl->netdev, reg, &state,
1240 true);
1241 }
1242 break;
1243
1244 case MLO_AN_PHY:
1245 return -EOPNOTSUPP;
1246
1247 case MLO_AN_SGMII:
1248 /* No phy, fall through to 8023z method */
1249 case MLO_AN_8023Z:
1250 if (phy_id == 0) {
1251 val = phylink_get_mac_state(pl, &state);
1252 if (val < 0)
1253 return val;
1254
1255 val = phylink_mii_emul_read(pl->netdev, reg, &state,
1256 true);
1257 }
1258 break;
1259 }
1260
1261 return val & 0xffff;
1262}
1263
1264static int phylink_mii_write(struct phylink *pl, unsigned int phy_id,
1265 unsigned int reg, unsigned int val)
1266{
9525ae83
RK		 1267 switch (pl->link_an_mode) {
1268 case MLO_AN_FIXED:
1269 break;
1270
1271 case MLO_AN_PHY:
1272 return -EOPNOTSUPP;
1273
1274 case MLO_AN_SGMII:
1275 /* No phy, fall through to 8023z method */
1276 case MLO_AN_8023Z:
1277 break;
1278 }
1279
1280 return 0;
1281}
1282
1283int phylink_mii_ioctl(struct phylink *pl, struct ifreq *ifr, int cmd)
1284{
ecbd87b8
RK		 1285 struct mii_ioctl_data *mii = if_mii(ifr);
1286 int ret;
9525ae83
RK		 1287
1288 WARN_ON(!lockdep_rtnl_is_held());
1289
ecbd87b8
RK		 1290 if (pl->phydev) {
1291 /* PHYs only exist for MLO_AN_PHY and MLO_AN_SGMII */
1292 switch (cmd) {
1293 case SIOCGMIIPHY:
1294 mii->phy_id = pl->phydev->mdio.addr;
1295
1296 case SIOCGMIIREG:
1297 ret = phylink_phy_read(pl, mii->phy_id, mii->reg_num);
1298 if (ret >= 0) {
1299 mii->val_out = ret;
1300 ret = 0;
1301 }
1302 break;
9525ae83 1303
ecbd87b8
RK		 1304 case SIOCSMIIREG:
1305 ret = phylink_phy_write(pl, mii->phy_id, mii->reg_num,
1306 mii->val_in);
1307 break;
1308
1309 default:
1310 ret = phy_mii_ioctl(pl->phydev, ifr, cmd);
1311 break;
9525ae83 1312 }
ecbd87b8
RK		 1313 } else {
1314 switch (cmd) {
1315 case SIOCGMIIPHY:
1316 mii->phy_id = 0;
1317
1318 case SIOCGMIIREG:
1319 ret = phylink_mii_read(pl, mii->phy_id, mii->reg_num);
1320 if (ret >= 0) {
1321 mii->val_out = ret;
1322 ret = 0;
1323 }
1324 break;
9525ae83 1325
ecbd87b8
RK		 1326 case SIOCSMIIREG:
1327 ret = phylink_mii_write(pl, mii->phy_id, mii->reg_num,
1328 mii->val_in);
1329 break;
9525ae83 1330
ecbd87b8
RK		 1331 default:
1332 ret = -EOPNOTSUPP;
1333 break;
1334 }
9525ae83
RK		 1335 }
1336
1337 return ret;
1338}
1339EXPORT_SYMBOL_GPL(phylink_mii_ioctl);
1340
ce0aa27f
RK		 1341static int phylink_sfp_module_insert(void *upstream,
1342 const struct sfp_eeprom_id *id)
1343{
1344 struct phylink *pl = upstream;
1345 __ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, };
1346 struct phylink_link_state config;
1347 phy_interface_t iface;
1348 int mode, ret = 0;
1349 bool changed;
1350 u8 port;
1351
1352 sfp_parse_support(pl->sfp_bus, id, support);
1353 port = sfp_parse_port(pl->sfp_bus, id, support);
1354 iface = sfp_parse_interface(pl->sfp_bus, id);
1355
1356 WARN_ON(!lockdep_rtnl_is_held());
1357
1358 switch (iface) {
1359 case PHY_INTERFACE_MODE_SGMII:
1360 mode = MLO_AN_SGMII;
1361 break;
1362 case PHY_INTERFACE_MODE_1000BASEX:
1363 mode = MLO_AN_8023Z;
1364 break;
1365 default:
1366 return -EINVAL;
1367 }
1368
1369 memset(&config, 0, sizeof(config));
1370 linkmode_copy(config.advertising, support);
1371 config.interface = iface;
1372 config.speed = SPEED_UNKNOWN;
1373 config.duplex = DUPLEX_UNKNOWN;
1374 config.pause = MLO_PAUSE_AN;
1375 config.an_enabled = pl->link_config.an_enabled;
1376
1377 /* Ignore errors if we're expecting a PHY to attach later */
1378 ret = phylink_validate(pl, support, &config);
1379 if (ret) {
1380 netdev_err(pl->netdev, "validation of %s/%s with support %*pb failed: %d\n",
1381 phylink_an_mode_str(mode), phy_modes(config.interface),
1382 __ETHTOOL_LINK_MODE_MASK_NBITS, support, ret);
1383 return ret;
1384 }
1385
1386 netdev_dbg(pl->netdev, "requesting link mode %s/%s with support %*pb\n",
1387 phylink_an_mode_str(mode), phy_modes(config.interface),
1388 __ETHTOOL_LINK_MODE_MASK_NBITS, support);
1389
1390 if (mode == MLO_AN_8023Z && pl->phydev)
1391 return -EINVAL;
1392
1393 changed = !bitmap_equal(pl->supported, support,
1394 __ETHTOOL_LINK_MODE_MASK_NBITS);
1395 if (changed) {
1396 linkmode_copy(pl->supported, support);
1397 linkmode_copy(pl->link_config.advertising, config.advertising);
1398 }
1399
1400 if (pl->link_an_mode != mode ||
1401 pl->link_config.interface != config.interface) {
1402 pl->link_config.interface = config.interface;
1403 pl->link_an_mode = mode;
1404
1405 changed = true;
1406
1407 netdev_info(pl->netdev, "switched to %s/%s link mode\n",
1408 phylink_an_mode_str(mode),
1409 phy_modes(config.interface));
1410 }
1411
1412 pl->link_port = port;
1413
1414 if (changed && !test_bit(PHYLINK_DISABLE_STOPPED,
1415 &pl->phylink_disable_state))
1416 phylink_mac_config(pl, &pl->link_config);
1417
1418 return ret;
1419}
1420
1421static void phylink_sfp_link_down(void *upstream)
1422{
1423 struct phylink *pl = upstream;
1424
1425 WARN_ON(!lockdep_rtnl_is_held());
1426
1427 set_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state);
1428 flush_work(&pl->resolve);
1429
1430 netif_carrier_off(pl->netdev);
1431}
1432
1433static void phylink_sfp_link_up(void *upstream)
1434{
1435 struct phylink *pl = upstream;
1436
1437 WARN_ON(!lockdep_rtnl_is_held());
1438
1439 clear_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state);
1440 phylink_run_resolve(pl);
1441}
1442
1443static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy)
1444{
1445 return phylink_connect_phy(upstream, phy);
1446}
1447
1448static void phylink_sfp_disconnect_phy(void *upstream)
1449{
1450 phylink_disconnect_phy(upstream);
1451}
1452
1453static const struct sfp_upstream_ops sfp_phylink_ops = {
1454 .module_insert = phylink_sfp_module_insert,
1455 .link_up = phylink_sfp_link_up,
1456 .link_down = phylink_sfp_link_down,
1457 .connect_phy = phylink_sfp_connect_phy,
1458 .disconnect_phy = phylink_sfp_disconnect_phy,
1459};
1460
9525ae83 1461MODULE_LICENSE("GPL");
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