Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
a40c175b VD |
2 | /* |
3 | * Handling of a single switch port | |
4 | * | |
5 | * Copyright (c) 2017 Savoir-faire Linux Inc. | |
6 | * Vivien Didelot <vivien.didelot@savoirfairelinux.com> | |
a40c175b VD |
7 | */ |
8 | ||
9 | #include <linux/if_bridge.h> | |
cfbed329 | 10 | #include <linux/notifier.h> |
57ab1ca2 VD |
11 | #include <linux/of_mdio.h> |
12 | #include <linux/of_net.h> | |
a40c175b VD |
13 | |
14 | #include "dsa_priv.h" | |
15 | ||
f66a6a69 VO |
16 | static int dsa_broadcast(unsigned long e, void *v) |
17 | { | |
18 | struct dsa_switch_tree *dst; | |
19 | int err = 0; | |
20 | ||
21 | list_for_each_entry(dst, &dsa_tree_list, list) { | |
22 | struct raw_notifier_head *nh = &dst->nh; | |
23 | ||
24 | err = raw_notifier_call_chain(nh, e, v); | |
25 | err = notifier_to_errno(err); | |
26 | if (err) | |
27 | break; | |
28 | } | |
29 | ||
30 | return err; | |
31 | } | |
32 | ||
bb9f6031 | 33 | static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v) |
cfbed329 VD |
34 | { |
35 | struct raw_notifier_head *nh = &dp->ds->dst->nh; | |
36 | int err; | |
37 | ||
38 | err = raw_notifier_call_chain(nh, e, v); | |
39 | ||
40 | return notifier_to_errno(err); | |
41 | } | |
42 | ||
bae33f2b | 43 | int dsa_port_set_state(struct dsa_port *dp, u8 state) |
a40c175b VD |
44 | { |
45 | struct dsa_switch *ds = dp->ds; | |
46 | int port = dp->index; | |
47 | ||
bae33f2b VO |
48 | if (!ds->ops->port_stp_state_set) |
49 | return -EOPNOTSUPP; | |
a40c175b | 50 | |
bae33f2b | 51 | ds->ops->port_stp_state_set(ds, port, state); |
a40c175b VD |
52 | |
53 | if (ds->ops->port_fast_age) { | |
54 | /* Fast age FDB entries or flush appropriate forwarding database | |
55 | * for the given port, if we are moving it from Learning or | |
56 | * Forwarding state, to Disabled or Blocking or Listening state. | |
57 | */ | |
58 | ||
59 | if ((dp->stp_state == BR_STATE_LEARNING || | |
60 | dp->stp_state == BR_STATE_FORWARDING) && | |
61 | (state == BR_STATE_DISABLED || | |
62 | state == BR_STATE_BLOCKING || | |
63 | state == BR_STATE_LISTENING)) | |
64 | ds->ops->port_fast_age(ds, port); | |
65 | } | |
66 | ||
67 | dp->stp_state = state; | |
68 | ||
69 | return 0; | |
70 | } | |
71 | ||
fb8a6a2b | 72 | static void dsa_port_set_state_now(struct dsa_port *dp, u8 state) |
a40c175b VD |
73 | { |
74 | int err; | |
75 | ||
bae33f2b | 76 | err = dsa_port_set_state(dp, state); |
a40c175b VD |
77 | if (err) |
78 | pr_err("DSA: failed to set STP state %u (%d)\n", state, err); | |
79 | } | |
cfbed329 | 80 | |
8640f8dc | 81 | int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy) |
fb8a6a2b | 82 | { |
fb8a6a2b VD |
83 | struct dsa_switch *ds = dp->ds; |
84 | int port = dp->index; | |
85 | int err; | |
86 | ||
87 | if (ds->ops->port_enable) { | |
88 | err = ds->ops->port_enable(ds, port, phy); | |
89 | if (err) | |
90 | return err; | |
91 | } | |
92 | ||
9c2054a5 RK |
93 | if (!dp->bridge_dev) |
94 | dsa_port_set_state_now(dp, BR_STATE_FORWARDING); | |
fb8a6a2b | 95 | |
8640f8dc RK |
96 | if (dp->pl) |
97 | phylink_start(dp->pl); | |
98 | ||
fb8a6a2b VD |
99 | return 0; |
100 | } | |
101 | ||
8640f8dc RK |
102 | int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy) |
103 | { | |
104 | int err; | |
105 | ||
106 | rtnl_lock(); | |
107 | err = dsa_port_enable_rt(dp, phy); | |
108 | rtnl_unlock(); | |
109 | ||
110 | return err; | |
111 | } | |
112 | ||
113 | void dsa_port_disable_rt(struct dsa_port *dp) | |
fb8a6a2b VD |
114 | { |
115 | struct dsa_switch *ds = dp->ds; | |
116 | int port = dp->index; | |
117 | ||
8640f8dc RK |
118 | if (dp->pl) |
119 | phylink_stop(dp->pl); | |
120 | ||
9c2054a5 RK |
121 | if (!dp->bridge_dev) |
122 | dsa_port_set_state_now(dp, BR_STATE_DISABLED); | |
fb8a6a2b VD |
123 | |
124 | if (ds->ops->port_disable) | |
75104db0 | 125 | ds->ops->port_disable(ds, port); |
fb8a6a2b VD |
126 | } |
127 | ||
8640f8dc RK |
128 | void dsa_port_disable(struct dsa_port *dp) |
129 | { | |
130 | rtnl_lock(); | |
131 | dsa_port_disable_rt(dp); | |
132 | rtnl_unlock(); | |
133 | } | |
134 | ||
cfbed329 VD |
135 | int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br) |
136 | { | |
137 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 138 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
139 | .sw_index = dp->ds->index, |
140 | .port = dp->index, | |
141 | .br = br, | |
142 | }; | |
143 | int err; | |
144 | ||
c1388063 | 145 | /* Set the flooding mode before joining the port in the switch */ |
bae33f2b | 146 | err = dsa_port_bridge_flags(dp, BR_FLOOD | BR_MCAST_FLOOD); |
c1388063 RK |
147 | if (err) |
148 | return err; | |
149 | ||
150 | /* Here the interface is already bridged. Reflect the current | |
151 | * configuration so that drivers can program their chips accordingly. | |
cfbed329 VD |
152 | */ |
153 | dp->bridge_dev = br; | |
154 | ||
f66a6a69 | 155 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info); |
cfbed329 VD |
156 | |
157 | /* The bridging is rolled back on error */ | |
c1388063 | 158 | if (err) { |
bae33f2b | 159 | dsa_port_bridge_flags(dp, 0); |
cfbed329 | 160 | dp->bridge_dev = NULL; |
c1388063 | 161 | } |
cfbed329 VD |
162 | |
163 | return err; | |
164 | } | |
165 | ||
166 | void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br) | |
167 | { | |
168 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 169 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
170 | .sw_index = dp->ds->index, |
171 | .port = dp->index, | |
172 | .br = br, | |
173 | }; | |
174 | int err; | |
175 | ||
176 | /* Here the port is already unbridged. Reflect the current configuration | |
177 | * so that drivers can program their chips accordingly. | |
178 | */ | |
179 | dp->bridge_dev = NULL; | |
180 | ||
f66a6a69 | 181 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info); |
cfbed329 VD |
182 | if (err) |
183 | pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n"); | |
184 | ||
c1388063 | 185 | /* Port is leaving the bridge, disable flooding */ |
bae33f2b | 186 | dsa_port_bridge_flags(dp, 0); |
c1388063 | 187 | |
cfbed329 VD |
188 | /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, |
189 | * so allow it to be in BR_STATE_FORWARDING to be kept functional | |
190 | */ | |
191 | dsa_port_set_state_now(dp, BR_STATE_FORWARDING); | |
192 | } | |
4d61d304 | 193 | |
adb256eb | 194 | /* Must be called under rcu_read_lock() */ |
8f5d16f6 VO |
195 | static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp, |
196 | bool vlan_filtering) | |
197 | { | |
198 | struct dsa_switch *ds = dp->ds; | |
adb256eb VO |
199 | int err, i; |
200 | ||
201 | /* VLAN awareness was off, so the question is "can we turn it on". | |
202 | * We may have had 8021q uppers, those need to go. Make sure we don't | |
203 | * enter an inconsistent state: deny changing the VLAN awareness state | |
204 | * as long as we have 8021q uppers. | |
205 | */ | |
206 | if (vlan_filtering && dsa_is_user_port(ds, dp->index)) { | |
207 | struct net_device *upper_dev, *slave = dp->slave; | |
208 | struct net_device *br = dp->bridge_dev; | |
209 | struct list_head *iter; | |
210 | ||
211 | netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) { | |
212 | struct bridge_vlan_info br_info; | |
213 | u16 vid; | |
214 | ||
215 | if (!is_vlan_dev(upper_dev)) | |
216 | continue; | |
217 | ||
218 | vid = vlan_dev_vlan_id(upper_dev); | |
219 | ||
220 | /* br_vlan_get_info() returns -EINVAL or -ENOENT if the | |
221 | * device, respectively the VID is not found, returning | |
222 | * 0 means success, which is a failure for us here. | |
223 | */ | |
224 | err = br_vlan_get_info(br, vid, &br_info); | |
225 | if (err == 0) { | |
226 | dev_err(ds->dev, "Must remove upper %s first\n", | |
227 | upper_dev->name); | |
228 | return false; | |
229 | } | |
230 | } | |
231 | } | |
8f5d16f6 VO |
232 | |
233 | if (!ds->vlan_filtering_is_global) | |
234 | return true; | |
235 | ||
236 | /* For cases where enabling/disabling VLAN awareness is global to the | |
237 | * switch, we need to handle the case where multiple bridges span | |
238 | * different ports of the same switch device and one of them has a | |
239 | * different setting than what is being requested. | |
240 | */ | |
241 | for (i = 0; i < ds->num_ports; i++) { | |
242 | struct net_device *other_bridge; | |
243 | ||
244 | other_bridge = dsa_to_port(ds, i)->bridge_dev; | |
245 | if (!other_bridge) | |
246 | continue; | |
247 | /* If it's the same bridge, it also has same | |
248 | * vlan_filtering setting => no need to check | |
249 | */ | |
250 | if (other_bridge == dp->bridge_dev) | |
251 | continue; | |
252 | if (br_vlan_enabled(other_bridge) != vlan_filtering) { | |
253 | dev_err(ds->dev, "VLAN filtering is a global setting\n"); | |
254 | return false; | |
255 | } | |
256 | } | |
257 | return true; | |
258 | } | |
259 | ||
bae33f2b | 260 | int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering) |
4d61d304 VD |
261 | { |
262 | struct dsa_switch *ds = dp->ds; | |
bae33f2b | 263 | bool apply; |
33162e9a | 264 | int err; |
4d61d304 | 265 | |
bae33f2b VO |
266 | if (!ds->ops->port_vlan_filtering) |
267 | return -EOPNOTSUPP; | |
adb256eb | 268 | |
bae33f2b VO |
269 | /* We are called from dsa_slave_switchdev_blocking_event(), |
270 | * which is not under rcu_read_lock(), unlike | |
271 | * dsa_slave_switchdev_event(). | |
272 | */ | |
273 | rcu_read_lock(); | |
274 | apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering); | |
275 | rcu_read_unlock(); | |
276 | if (!apply) | |
277 | return -EINVAL; | |
8f5d16f6 | 278 | |
ec9121e7 VO |
279 | if (dsa_port_is_vlan_filtering(dp) == vlan_filtering) |
280 | return 0; | |
281 | ||
bae33f2b | 282 | err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering); |
8f5d16f6 VO |
283 | if (err) |
284 | return err; | |
285 | ||
bae33f2b VO |
286 | if (ds->vlan_filtering_is_global) |
287 | ds->vlan_filtering = vlan_filtering; | |
288 | else | |
289 | dp->vlan_filtering = vlan_filtering; | |
2e554a7a | 290 | |
4d61d304 VD |
291 | return 0; |
292 | } | |
d87bd94e | 293 | |
54a0ed0d RK |
294 | /* This enforces legacy behavior for switch drivers which assume they can't |
295 | * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0 | |
296 | */ | |
297 | bool dsa_port_skip_vlan_configuration(struct dsa_port *dp) | |
298 | { | |
299 | struct dsa_switch *ds = dp->ds; | |
300 | ||
301 | if (!dp->bridge_dev) | |
302 | return false; | |
303 | ||
304 | return (!ds->configure_vlan_while_not_filtering && | |
305 | !br_vlan_enabled(dp->bridge_dev)); | |
306 | } | |
307 | ||
bae33f2b | 308 | int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock) |
d87bd94e VD |
309 | { |
310 | unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock); | |
311 | unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies); | |
bae33f2b VO |
312 | struct dsa_notifier_ageing_time_info info; |
313 | struct switchdev_trans trans; | |
314 | int err; | |
315 | ||
316 | info.ageing_time = ageing_time; | |
317 | info.trans = &trans; | |
d87bd94e | 318 | |
bae33f2b VO |
319 | trans.ph_prepare = true; |
320 | err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info); | |
321 | if (err) | |
322 | return err; | |
d87bd94e | 323 | |
d87bd94e | 324 | dp->ageing_time = ageing_time; |
d87bd94e | 325 | |
bae33f2b | 326 | trans.ph_prepare = false; |
1faabf74 | 327 | return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info); |
d87bd94e | 328 | } |
d1cffff0 | 329 | |
bae33f2b | 330 | int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags) |
ea87005a FF |
331 | { |
332 | struct dsa_switch *ds = dp->ds; | |
333 | ||
334 | if (!ds->ops->port_egress_floods || | |
335 | (flags & ~(BR_FLOOD | BR_MCAST_FLOOD))) | |
336 | return -EINVAL; | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
bae33f2b | 341 | int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags) |
57652796 RK |
342 | { |
343 | struct dsa_switch *ds = dp->ds; | |
344 | int port = dp->index; | |
345 | int err = 0; | |
346 | ||
57652796 RK |
347 | if (ds->ops->port_egress_floods) |
348 | err = ds->ops->port_egress_floods(ds, port, flags & BR_FLOOD, | |
349 | flags & BR_MCAST_FLOOD); | |
350 | ||
351 | return err; | |
352 | } | |
353 | ||
bae33f2b | 354 | int dsa_port_mrouter(struct dsa_port *dp, bool mrouter) |
08cc83cc VD |
355 | { |
356 | struct dsa_switch *ds = dp->ds; | |
357 | int port = dp->index; | |
358 | ||
bae33f2b VO |
359 | if (!ds->ops->port_egress_floods) |
360 | return -EOPNOTSUPP; | |
08cc83cc VD |
361 | |
362 | return ds->ops->port_egress_floods(ds, port, true, mrouter); | |
363 | } | |
364 | ||
bfcb8132 VO |
365 | int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu, |
366 | bool propagate_upstream) | |
367 | { | |
368 | struct dsa_notifier_mtu_info info = { | |
369 | .sw_index = dp->ds->index, | |
370 | .propagate_upstream = propagate_upstream, | |
371 | .port = dp->index, | |
372 | .mtu = new_mtu, | |
373 | }; | |
374 | ||
375 | return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info); | |
376 | } | |
377 | ||
2acf4e6a AS |
378 | int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
379 | u16 vid) | |
d1cffff0 | 380 | { |
685fb6a4 VD |
381 | struct dsa_notifier_fdb_info info = { |
382 | .sw_index = dp->ds->index, | |
383 | .port = dp->index, | |
2acf4e6a AS |
384 | .addr = addr, |
385 | .vid = vid, | |
685fb6a4 | 386 | }; |
d1cffff0 | 387 | |
685fb6a4 | 388 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info); |
d1cffff0 VD |
389 | } |
390 | ||
2acf4e6a AS |
391 | int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr, |
392 | u16 vid) | |
d1cffff0 | 393 | { |
685fb6a4 VD |
394 | struct dsa_notifier_fdb_info info = { |
395 | .sw_index = dp->ds->index, | |
396 | .port = dp->index, | |
2acf4e6a AS |
397 | .addr = addr, |
398 | .vid = vid, | |
399 | ||
685fb6a4 | 400 | }; |
d1cffff0 | 401 | |
685fb6a4 | 402 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info); |
d1cffff0 VD |
403 | } |
404 | ||
de40fc5d VD |
405 | int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data) |
406 | { | |
407 | struct dsa_switch *ds = dp->ds; | |
408 | int port = dp->index; | |
409 | ||
410 | if (!ds->ops->port_fdb_dump) | |
411 | return -EOPNOTSUPP; | |
412 | ||
413 | return ds->ops->port_fdb_dump(ds, port, cb, data); | |
414 | } | |
415 | ||
bb9f6031 | 416 | int dsa_port_mdb_add(const struct dsa_port *dp, |
ffb68fc5 | 417 | const struct switchdev_obj_port_mdb *mdb) |
3a9afea3 | 418 | { |
8ae5bcdc VD |
419 | struct dsa_notifier_mdb_info info = { |
420 | .sw_index = dp->ds->index, | |
421 | .port = dp->index, | |
8ae5bcdc VD |
422 | .mdb = mdb, |
423 | }; | |
3a9afea3 | 424 | |
8ae5bcdc | 425 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info); |
3a9afea3 VD |
426 | } |
427 | ||
bb9f6031 | 428 | int dsa_port_mdb_del(const struct dsa_port *dp, |
3a9afea3 VD |
429 | const struct switchdev_obj_port_mdb *mdb) |
430 | { | |
8ae5bcdc VD |
431 | struct dsa_notifier_mdb_info info = { |
432 | .sw_index = dp->ds->index, | |
433 | .port = dp->index, | |
434 | .mdb = mdb, | |
435 | }; | |
3a9afea3 | 436 | |
8ae5bcdc | 437 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info); |
3a9afea3 VD |
438 | } |
439 | ||
076e7133 | 440 | int dsa_port_vlan_add(struct dsa_port *dp, |
ffb68fc5 | 441 | const struct switchdev_obj_port_vlan *vlan) |
076e7133 | 442 | { |
d0c627b8 VD |
443 | struct dsa_notifier_vlan_info info = { |
444 | .sw_index = dp->ds->index, | |
445 | .port = dp->index, | |
d0c627b8 VD |
446 | .vlan = vlan, |
447 | }; | |
076e7133 | 448 | |
c5335d73 | 449 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info); |
076e7133 VD |
450 | } |
451 | ||
452 | int dsa_port_vlan_del(struct dsa_port *dp, | |
453 | const struct switchdev_obj_port_vlan *vlan) | |
454 | { | |
d0c627b8 VD |
455 | struct dsa_notifier_vlan_info info = { |
456 | .sw_index = dp->ds->index, | |
457 | .port = dp->index, | |
458 | .vlan = vlan, | |
459 | }; | |
076e7133 | 460 | |
c5335d73 | 461 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info); |
076e7133 | 462 | } |
57ab1ca2 | 463 | |
6207a78c | 464 | static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp) |
33615367 | 465 | { |
33615367 | 466 | struct device_node *phy_dn; |
33615367 | 467 | struct phy_device *phydev; |
33615367 | 468 | |
6207a78c | 469 | phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0); |
33615367 | 470 | if (!phy_dn) |
6207a78c | 471 | return NULL; |
33615367 SR |
472 | |
473 | phydev = of_phy_find_device(phy_dn); | |
474 | if (!phydev) { | |
6207a78c FF |
475 | of_node_put(phy_dn); |
476 | return ERR_PTR(-EPROBE_DEFER); | |
33615367 SR |
477 | } |
478 | ||
9919a363 | 479 | of_node_put(phy_dn); |
6207a78c FF |
480 | return phydev; |
481 | } | |
482 | ||
8ae67496 FF |
483 | static void dsa_port_phylink_validate(struct phylink_config *config, |
484 | unsigned long *supported, | |
485 | struct phylink_link_state *state) | |
77373d49 IC |
486 | { |
487 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
488 | struct dsa_switch *ds = dp->ds; | |
489 | ||
490 | if (!ds->ops->phylink_validate) | |
491 | return; | |
492 | ||
493 | ds->ops->phylink_validate(ds, dp->index, supported, state); | |
494 | } | |
77373d49 | 495 | |
8ae67496 FF |
496 | static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config, |
497 | struct phylink_link_state *state) | |
77373d49 IC |
498 | { |
499 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
500 | struct dsa_switch *ds = dp->ds; | |
87615c96 | 501 | int err; |
77373d49 | 502 | |
d46b7e4f RK |
503 | /* Only called for inband modes */ |
504 | if (!ds->ops->phylink_mac_link_state) { | |
505 | state->link = 0; | |
506 | return; | |
507 | } | |
77373d49 | 508 | |
87615c96 RK |
509 | err = ds->ops->phylink_mac_link_state(ds, dp->index, state); |
510 | if (err < 0) { | |
511 | dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n", | |
512 | dp->index, err); | |
d46b7e4f | 513 | state->link = 0; |
87615c96 | 514 | } |
77373d49 | 515 | } |
77373d49 | 516 | |
8ae67496 FF |
517 | static void dsa_port_phylink_mac_config(struct phylink_config *config, |
518 | unsigned int mode, | |
519 | const struct phylink_link_state *state) | |
77373d49 IC |
520 | { |
521 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
522 | struct dsa_switch *ds = dp->ds; | |
523 | ||
524 | if (!ds->ops->phylink_mac_config) | |
525 | return; | |
526 | ||
527 | ds->ops->phylink_mac_config(ds, dp->index, mode, state); | |
528 | } | |
77373d49 | 529 | |
8ae67496 | 530 | static void dsa_port_phylink_mac_an_restart(struct phylink_config *config) |
77373d49 IC |
531 | { |
532 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
533 | struct dsa_switch *ds = dp->ds; | |
534 | ||
535 | if (!ds->ops->phylink_mac_an_restart) | |
536 | return; | |
537 | ||
538 | ds->ops->phylink_mac_an_restart(ds, dp->index); | |
539 | } | |
77373d49 | 540 | |
8ae67496 FF |
541 | static void dsa_port_phylink_mac_link_down(struct phylink_config *config, |
542 | unsigned int mode, | |
543 | phy_interface_t interface) | |
77373d49 IC |
544 | { |
545 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
0e279218 | 546 | struct phy_device *phydev = NULL; |
77373d49 IC |
547 | struct dsa_switch *ds = dp->ds; |
548 | ||
0e279218 IC |
549 | if (dsa_is_user_port(ds, dp->index)) |
550 | phydev = dp->slave->phydev; | |
551 | ||
77373d49 | 552 | if (!ds->ops->phylink_mac_link_down) { |
0e279218 IC |
553 | if (ds->ops->adjust_link && phydev) |
554 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
555 | return; |
556 | } | |
557 | ||
558 | ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface); | |
559 | } | |
77373d49 | 560 | |
8ae67496 | 561 | static void dsa_port_phylink_mac_link_up(struct phylink_config *config, |
91a208f2 | 562 | struct phy_device *phydev, |
8ae67496 FF |
563 | unsigned int mode, |
564 | phy_interface_t interface, | |
91a208f2 RK |
565 | int speed, int duplex, |
566 | bool tx_pause, bool rx_pause) | |
77373d49 IC |
567 | { |
568 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
77373d49 IC |
569 | struct dsa_switch *ds = dp->ds; |
570 | ||
571 | if (!ds->ops->phylink_mac_link_up) { | |
0e279218 IC |
572 | if (ds->ops->adjust_link && phydev) |
573 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
574 | return; |
575 | } | |
576 | ||
5b502a7b RK |
577 | ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev, |
578 | speed, duplex, tx_pause, rx_pause); | |
77373d49 | 579 | } |
77373d49 IC |
580 | |
581 | const struct phylink_mac_ops dsa_port_phylink_mac_ops = { | |
582 | .validate = dsa_port_phylink_validate, | |
d46b7e4f | 583 | .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state, |
77373d49 IC |
584 | .mac_config = dsa_port_phylink_mac_config, |
585 | .mac_an_restart = dsa_port_phylink_mac_an_restart, | |
586 | .mac_link_down = dsa_port_phylink_mac_link_down, | |
587 | .mac_link_up = dsa_port_phylink_mac_link_up, | |
588 | }; | |
589 | ||
6207a78c FF |
590 | static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable) |
591 | { | |
592 | struct dsa_switch *ds = dp->ds; | |
593 | struct phy_device *phydev; | |
594 | int port = dp->index; | |
595 | int err = 0; | |
596 | ||
597 | phydev = dsa_port_get_phy_device(dp); | |
598 | if (!phydev) | |
599 | return 0; | |
600 | ||
601 | if (IS_ERR(phydev)) | |
602 | return PTR_ERR(phydev); | |
603 | ||
33615367 | 604 | if (enable) { |
33615367 SR |
605 | err = genphy_resume(phydev); |
606 | if (err < 0) | |
607 | goto err_put_dev; | |
608 | ||
609 | err = genphy_read_status(phydev); | |
610 | if (err < 0) | |
611 | goto err_put_dev; | |
612 | } else { | |
613 | err = genphy_suspend(phydev); | |
614 | if (err < 0) | |
615 | goto err_put_dev; | |
616 | } | |
617 | ||
618 | if (ds->ops->adjust_link) | |
619 | ds->ops->adjust_link(ds, port, phydev); | |
620 | ||
621 | dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev)); | |
622 | ||
623 | err_put_dev: | |
624 | put_device(&phydev->mdio.dev); | |
33615367 SR |
625 | return err; |
626 | } | |
627 | ||
628 | static int dsa_port_fixed_link_register_of(struct dsa_port *dp) | |
57ab1ca2 VD |
629 | { |
630 | struct device_node *dn = dp->dn; | |
631 | struct dsa_switch *ds = dp->ds; | |
632 | struct phy_device *phydev; | |
633 | int port = dp->index; | |
0c65b2b9 | 634 | phy_interface_t mode; |
57ab1ca2 VD |
635 | int err; |
636 | ||
33615367 SR |
637 | err = of_phy_register_fixed_link(dn); |
638 | if (err) { | |
639 | dev_err(ds->dev, | |
640 | "failed to register the fixed PHY of port %d\n", | |
641 | port); | |
642 | return err; | |
643 | } | |
57ab1ca2 | 644 | |
33615367 | 645 | phydev = of_phy_find_device(dn); |
57ab1ca2 | 646 | |
0c65b2b9 AL |
647 | err = of_get_phy_mode(dn, &mode); |
648 | if (err) | |
33615367 SR |
649 | mode = PHY_INTERFACE_MODE_NA; |
650 | phydev->interface = mode; | |
57ab1ca2 | 651 | |
33615367 | 652 | genphy_read_status(phydev); |
57ab1ca2 | 653 | |
33615367 SR |
654 | if (ds->ops->adjust_link) |
655 | ds->ops->adjust_link(ds, port, phydev); | |
57ab1ca2 | 656 | |
33615367 | 657 | put_device(&phydev->mdio.dev); |
57ab1ca2 VD |
658 | |
659 | return 0; | |
660 | } | |
661 | ||
0e279218 IC |
662 | static int dsa_port_phylink_register(struct dsa_port *dp) |
663 | { | |
664 | struct dsa_switch *ds = dp->ds; | |
665 | struct device_node *port_dn = dp->dn; | |
0c65b2b9 AL |
666 | phy_interface_t mode; |
667 | int err; | |
0e279218 | 668 | |
0c65b2b9 AL |
669 | err = of_get_phy_mode(port_dn, &mode); |
670 | if (err) | |
0e279218 IC |
671 | mode = PHY_INTERFACE_MODE_NA; |
672 | ||
673 | dp->pl_config.dev = ds->dev; | |
674 | dp->pl_config.type = PHYLINK_DEV; | |
787cac3f | 675 | dp->pl_config.pcs_poll = ds->pcs_poll; |
0e279218 IC |
676 | |
677 | dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), | |
678 | mode, &dsa_port_phylink_mac_ops); | |
679 | if (IS_ERR(dp->pl)) { | |
680 | pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); | |
681 | return PTR_ERR(dp->pl); | |
682 | } | |
683 | ||
684 | err = phylink_of_phy_connect(dp->pl, port_dn, 0); | |
2131fba5 | 685 | if (err && err != -ENODEV) { |
0e279218 IC |
686 | pr_err("could not attach to PHY: %d\n", err); |
687 | goto err_phy_connect; | |
688 | } | |
689 | ||
0e279218 IC |
690 | return 0; |
691 | ||
692 | err_phy_connect: | |
693 | phylink_destroy(dp->pl); | |
694 | return err; | |
695 | } | |
696 | ||
33615367 | 697 | int dsa_port_link_register_of(struct dsa_port *dp) |
57ab1ca2 | 698 | { |
0e279218 | 699 | struct dsa_switch *ds = dp->ds; |
a20f9970 | 700 | struct device_node *phy_np; |
3be98b2d | 701 | int port = dp->index; |
0e279218 | 702 | |
a20f9970 AL |
703 | if (!ds->ops->adjust_link) { |
704 | phy_np = of_parse_phandle(dp->dn, "phy-handle", 0); | |
3be98b2d AL |
705 | if (of_phy_is_fixed_link(dp->dn) || phy_np) { |
706 | if (ds->ops->phylink_mac_link_down) | |
707 | ds->ops->phylink_mac_link_down(ds, port, | |
708 | MLO_AN_FIXED, PHY_INTERFACE_MODE_NA); | |
a20f9970 | 709 | return dsa_port_phylink_register(dp); |
3be98b2d | 710 | } |
a20f9970 AL |
711 | return 0; |
712 | } | |
0e279218 IC |
713 | |
714 | dev_warn(ds->dev, | |
715 | "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n"); | |
716 | ||
33615367 SR |
717 | if (of_phy_is_fixed_link(dp->dn)) |
718 | return dsa_port_fixed_link_register_of(dp); | |
719 | else | |
720 | return dsa_port_setup_phy_of(dp, true); | |
721 | } | |
57ab1ca2 | 722 | |
33615367 SR |
723 | void dsa_port_link_unregister_of(struct dsa_port *dp) |
724 | { | |
0e279218 IC |
725 | struct dsa_switch *ds = dp->ds; |
726 | ||
a20f9970 | 727 | if (!ds->ops->adjust_link && dp->pl) { |
0e279218 IC |
728 | rtnl_lock(); |
729 | phylink_disconnect_phy(dp->pl); | |
730 | rtnl_unlock(); | |
731 | phylink_destroy(dp->pl); | |
a20f9970 | 732 | dp->pl = NULL; |
0e279218 IC |
733 | return; |
734 | } | |
735 | ||
33615367 SR |
736 | if (of_phy_is_fixed_link(dp->dn)) |
737 | of_phy_deregister_fixed_link(dp->dn); | |
738 | else | |
739 | dsa_port_setup_phy_of(dp, false); | |
57ab1ca2 | 740 | } |
cf963573 FF |
741 | |
742 | int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data) | |
743 | { | |
744 | struct phy_device *phydev; | |
745 | int ret = -EOPNOTSUPP; | |
746 | ||
747 | if (of_phy_is_fixed_link(dp->dn)) | |
748 | return ret; | |
749 | ||
750 | phydev = dsa_port_get_phy_device(dp); | |
751 | if (IS_ERR_OR_NULL(phydev)) | |
752 | return ret; | |
753 | ||
754 | ret = phy_ethtool_get_strings(phydev, data); | |
755 | put_device(&phydev->mdio.dev); | |
756 | ||
757 | return ret; | |
758 | } | |
759 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings); | |
760 | ||
761 | int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data) | |
762 | { | |
763 | struct phy_device *phydev; | |
764 | int ret = -EOPNOTSUPP; | |
765 | ||
766 | if (of_phy_is_fixed_link(dp->dn)) | |
767 | return ret; | |
768 | ||
769 | phydev = dsa_port_get_phy_device(dp); | |
770 | if (IS_ERR_OR_NULL(phydev)) | |
771 | return ret; | |
772 | ||
773 | ret = phy_ethtool_get_stats(phydev, NULL, data); | |
774 | put_device(&phydev->mdio.dev); | |
775 | ||
776 | return ret; | |
777 | } | |
778 | EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats); | |
779 | ||
780 | int dsa_port_get_phy_sset_count(struct dsa_port *dp) | |
781 | { | |
782 | struct phy_device *phydev; | |
783 | int ret = -EOPNOTSUPP; | |
784 | ||
785 | if (of_phy_is_fixed_link(dp->dn)) | |
786 | return ret; | |
787 | ||
788 | phydev = dsa_port_get_phy_device(dp); | |
789 | if (IS_ERR_OR_NULL(phydev)) | |
790 | return ret; | |
791 | ||
792 | ret = phy_ethtool_get_sset_count(phydev); | |
793 | put_device(&phydev->mdio.dev); | |
794 | ||
795 | return ret; | |
796 | } | |
797 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count); |