Commit | Line | Data |
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91da11f8 LB |
1 | /* |
2 | * net/dsa/slave.c - Slave device handling | |
e84665c9 | 3 | * Copyright (c) 2008-2009 Marvell Semiconductor |
91da11f8 LB |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | */ | |
10 | ||
11 | #include <linux/list.h> | |
df02c6ff | 12 | #include <linux/etherdevice.h> |
b73adef6 | 13 | #include <linux/netdevice.h> |
91da11f8 | 14 | #include <linux/phy.h> |
a2820543 | 15 | #include <linux/phy_fixed.h> |
0d8bcdd3 FF |
16 | #include <linux/of_net.h> |
17 | #include <linux/of_mdio.h> | |
b73adef6 FF |
18 | #include <net/rtnetlink.h> |
19 | #include <linux/if_bridge.h> | |
91da11f8 LB |
20 | #include "dsa_priv.h" |
21 | ||
22 | /* slave mii_bus handling ***************************************************/ | |
23 | static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg) | |
24 | { | |
25 | struct dsa_switch *ds = bus->priv; | |
26 | ||
0d8bcdd3 | 27 | if (ds->phys_mii_mask & (1 << addr)) |
91da11f8 LB |
28 | return ds->drv->phy_read(ds, addr, reg); |
29 | ||
30 | return 0xffff; | |
31 | } | |
32 | ||
33 | static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val) | |
34 | { | |
35 | struct dsa_switch *ds = bus->priv; | |
36 | ||
0d8bcdd3 | 37 | if (ds->phys_mii_mask & (1 << addr)) |
91da11f8 LB |
38 | return ds->drv->phy_write(ds, addr, reg, val); |
39 | ||
40 | return 0; | |
41 | } | |
42 | ||
43 | void dsa_slave_mii_bus_init(struct dsa_switch *ds) | |
44 | { | |
45 | ds->slave_mii_bus->priv = (void *)ds; | |
46 | ds->slave_mii_bus->name = "dsa slave smi"; | |
47 | ds->slave_mii_bus->read = dsa_slave_phy_read; | |
48 | ds->slave_mii_bus->write = dsa_slave_phy_write; | |
f490be04 FF |
49 | snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x", |
50 | ds->index, ds->pd->sw_addr); | |
b4d2394d | 51 | ds->slave_mii_bus->parent = ds->master_dev; |
24df8986 | 52 | ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask; |
91da11f8 LB |
53 | } |
54 | ||
55 | ||
56 | /* slave device handling ****************************************************/ | |
c0840801 LB |
57 | static int dsa_slave_init(struct net_device *dev) |
58 | { | |
59 | struct dsa_slave_priv *p = netdev_priv(dev); | |
c0840801 | 60 | |
e84665c9 | 61 | dev->iflink = p->parent->dst->master_netdev->ifindex; |
c0840801 LB |
62 | |
63 | return 0; | |
64 | } | |
65 | ||
b73adef6 FF |
66 | static inline bool dsa_port_is_bridged(struct dsa_slave_priv *p) |
67 | { | |
68 | return !!p->bridge_dev; | |
69 | } | |
70 | ||
91da11f8 LB |
71 | static int dsa_slave_open(struct net_device *dev) |
72 | { | |
df02c6ff | 73 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 74 | struct net_device *master = p->parent->dst->master_netdev; |
b2f2af21 | 75 | struct dsa_switch *ds = p->parent; |
b73adef6 FF |
76 | u8 stp_state = dsa_port_is_bridged(p) ? |
77 | BR_STATE_BLOCKING : BR_STATE_FORWARDING; | |
df02c6ff LB |
78 | int err; |
79 | ||
80 | if (!(master->flags & IFF_UP)) | |
81 | return -ENETDOWN; | |
82 | ||
8feedbb4 | 83 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) { |
a748ee24 | 84 | err = dev_uc_add(master, dev->dev_addr); |
df02c6ff LB |
85 | if (err < 0) |
86 | goto out; | |
87 | } | |
88 | ||
89 | if (dev->flags & IFF_ALLMULTI) { | |
90 | err = dev_set_allmulti(master, 1); | |
91 | if (err < 0) | |
92 | goto del_unicast; | |
93 | } | |
94 | if (dev->flags & IFF_PROMISC) { | |
95 | err = dev_set_promiscuity(master, 1); | |
96 | if (err < 0) | |
97 | goto clear_allmulti; | |
98 | } | |
99 | ||
b2f2af21 FF |
100 | if (ds->drv->port_enable) { |
101 | err = ds->drv->port_enable(ds, p->port, p->phy); | |
102 | if (err) | |
103 | goto clear_promisc; | |
104 | } | |
105 | ||
b73adef6 FF |
106 | if (ds->drv->port_stp_update) |
107 | ds->drv->port_stp_update(ds, p->port, stp_state); | |
108 | ||
f7f1de51 FF |
109 | if (p->phy) |
110 | phy_start(p->phy); | |
111 | ||
91da11f8 | 112 | return 0; |
df02c6ff | 113 | |
b2f2af21 FF |
114 | clear_promisc: |
115 | if (dev->flags & IFF_PROMISC) | |
116 | dev_set_promiscuity(master, 0); | |
df02c6ff LB |
117 | clear_allmulti: |
118 | if (dev->flags & IFF_ALLMULTI) | |
119 | dev_set_allmulti(master, -1); | |
120 | del_unicast: | |
8feedbb4 | 121 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 122 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
123 | out: |
124 | return err; | |
91da11f8 LB |
125 | } |
126 | ||
127 | static int dsa_slave_close(struct net_device *dev) | |
128 | { | |
df02c6ff | 129 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 130 | struct net_device *master = p->parent->dst->master_netdev; |
b2f2af21 | 131 | struct dsa_switch *ds = p->parent; |
df02c6ff | 132 | |
f7f1de51 FF |
133 | if (p->phy) |
134 | phy_stop(p->phy); | |
135 | ||
df02c6ff | 136 | dev_mc_unsync(master, dev); |
a748ee24 | 137 | dev_uc_unsync(master, dev); |
df02c6ff LB |
138 | if (dev->flags & IFF_ALLMULTI) |
139 | dev_set_allmulti(master, -1); | |
140 | if (dev->flags & IFF_PROMISC) | |
141 | dev_set_promiscuity(master, -1); | |
142 | ||
8feedbb4 | 143 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 144 | dev_uc_del(master, dev->dev_addr); |
df02c6ff | 145 | |
b2f2af21 FF |
146 | if (ds->drv->port_disable) |
147 | ds->drv->port_disable(ds, p->port, p->phy); | |
148 | ||
b73adef6 FF |
149 | if (ds->drv->port_stp_update) |
150 | ds->drv->port_stp_update(ds, p->port, BR_STATE_DISABLED); | |
151 | ||
91da11f8 LB |
152 | return 0; |
153 | } | |
154 | ||
155 | static void dsa_slave_change_rx_flags(struct net_device *dev, int change) | |
156 | { | |
157 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 158 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
159 | |
160 | if (change & IFF_ALLMULTI) | |
161 | dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
162 | if (change & IFF_PROMISC) | |
163 | dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1); | |
164 | } | |
165 | ||
166 | static void dsa_slave_set_rx_mode(struct net_device *dev) | |
167 | { | |
168 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 169 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
170 | |
171 | dev_mc_sync(master, dev); | |
a748ee24 | 172 | dev_uc_sync(master, dev); |
91da11f8 LB |
173 | } |
174 | ||
df02c6ff | 175 | static int dsa_slave_set_mac_address(struct net_device *dev, void *a) |
91da11f8 | 176 | { |
df02c6ff | 177 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 178 | struct net_device *master = p->parent->dst->master_netdev; |
df02c6ff LB |
179 | struct sockaddr *addr = a; |
180 | int err; | |
181 | ||
182 | if (!is_valid_ether_addr(addr->sa_data)) | |
183 | return -EADDRNOTAVAIL; | |
184 | ||
185 | if (!(dev->flags & IFF_UP)) | |
186 | goto out; | |
187 | ||
8feedbb4 | 188 | if (!ether_addr_equal(addr->sa_data, master->dev_addr)) { |
a748ee24 | 189 | err = dev_uc_add(master, addr->sa_data); |
df02c6ff LB |
190 | if (err < 0) |
191 | return err; | |
192 | } | |
193 | ||
8feedbb4 | 194 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 195 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
196 | |
197 | out: | |
d08f161a | 198 | ether_addr_copy(dev->dev_addr, addr->sa_data); |
91da11f8 LB |
199 | |
200 | return 0; | |
201 | } | |
202 | ||
203 | static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
204 | { | |
205 | struct dsa_slave_priv *p = netdev_priv(dev); | |
91da11f8 LB |
206 | |
207 | if (p->phy != NULL) | |
28b04113 | 208 | return phy_mii_ioctl(p->phy, ifr, cmd); |
91da11f8 LB |
209 | |
210 | return -EOPNOTSUPP; | |
211 | } | |
212 | ||
b73adef6 FF |
213 | /* Return a bitmask of all ports being currently bridged within a given bridge |
214 | * device. Note that on leave, the mask will still return the bitmask of ports | |
215 | * currently bridged, prior to port removal, and this is exactly what we want. | |
216 | */ | |
217 | static u32 dsa_slave_br_port_mask(struct dsa_switch *ds, | |
218 | struct net_device *bridge) | |
219 | { | |
220 | struct dsa_slave_priv *p; | |
221 | unsigned int port; | |
222 | u32 mask = 0; | |
223 | ||
224 | for (port = 0; port < DSA_MAX_PORTS; port++) { | |
d79d2107 | 225 | if (!dsa_is_port_initialized(ds, port)) |
b73adef6 FF |
226 | continue; |
227 | ||
228 | p = netdev_priv(ds->ports[port]); | |
229 | ||
230 | if (ds->ports[port]->priv_flags & IFF_BRIDGE_PORT && | |
231 | p->bridge_dev == bridge) | |
232 | mask |= 1 << port; | |
233 | } | |
234 | ||
235 | return mask; | |
236 | } | |
237 | ||
238 | static int dsa_slave_stp_update(struct net_device *dev, u8 state) | |
239 | { | |
240 | struct dsa_slave_priv *p = netdev_priv(dev); | |
241 | struct dsa_switch *ds = p->parent; | |
242 | int ret = -EOPNOTSUPP; | |
243 | ||
244 | if (ds->drv->port_stp_update) | |
245 | ret = ds->drv->port_stp_update(ds, p->port, state); | |
246 | ||
247 | return ret; | |
248 | } | |
249 | ||
250 | static int dsa_slave_bridge_port_join(struct net_device *dev, | |
251 | struct net_device *br) | |
252 | { | |
253 | struct dsa_slave_priv *p = netdev_priv(dev); | |
254 | struct dsa_switch *ds = p->parent; | |
255 | int ret = -EOPNOTSUPP; | |
256 | ||
257 | p->bridge_dev = br; | |
258 | ||
259 | if (ds->drv->port_join_bridge) | |
260 | ret = ds->drv->port_join_bridge(ds, p->port, | |
261 | dsa_slave_br_port_mask(ds, br)); | |
262 | ||
263 | return ret; | |
264 | } | |
265 | ||
266 | static int dsa_slave_bridge_port_leave(struct net_device *dev) | |
267 | { | |
268 | struct dsa_slave_priv *p = netdev_priv(dev); | |
269 | struct dsa_switch *ds = p->parent; | |
270 | int ret = -EOPNOTSUPP; | |
271 | ||
272 | ||
273 | if (ds->drv->port_leave_bridge) | |
274 | ret = ds->drv->port_leave_bridge(ds, p->port, | |
275 | dsa_slave_br_port_mask(ds, p->bridge_dev)); | |
276 | ||
277 | p->bridge_dev = NULL; | |
278 | ||
279 | /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, | |
280 | * so allow it to be in BR_STATE_FORWARDING to be kept functional | |
281 | */ | |
282 | dsa_slave_stp_update(dev, BR_STATE_FORWARDING); | |
283 | ||
284 | return ret; | |
285 | } | |
286 | ||
287 | static int dsa_slave_parent_id_get(struct net_device *dev, | |
288 | struct netdev_phys_item_id *psid) | |
289 | { | |
290 | struct dsa_slave_priv *p = netdev_priv(dev); | |
291 | struct dsa_switch *ds = p->parent; | |
292 | ||
293 | psid->id_len = sizeof(ds->index); | |
294 | memcpy(&psid->id, &ds->index, psid->id_len); | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
3e8a72d1 FF |
299 | static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) |
300 | { | |
301 | struct dsa_slave_priv *p = netdev_priv(dev); | |
3e8a72d1 | 302 | |
5075314e | 303 | return p->xmit(skb, dev); |
3e8a72d1 FF |
304 | } |
305 | ||
5aed85ce FF |
306 | static netdev_tx_t dsa_slave_notag_xmit(struct sk_buff *skb, |
307 | struct net_device *dev) | |
308 | { | |
309 | struct dsa_slave_priv *p = netdev_priv(dev); | |
310 | ||
311 | skb->dev = p->parent->dst->master_netdev; | |
312 | dev_queue_xmit(skb); | |
313 | ||
314 | return NETDEV_TX_OK; | |
315 | } | |
316 | ||
91da11f8 LB |
317 | |
318 | /* ethtool operations *******************************************************/ | |
319 | static int | |
320 | dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
321 | { | |
322 | struct dsa_slave_priv *p = netdev_priv(dev); | |
323 | int err; | |
324 | ||
325 | err = -EOPNOTSUPP; | |
326 | if (p->phy != NULL) { | |
327 | err = phy_read_status(p->phy); | |
328 | if (err == 0) | |
329 | err = phy_ethtool_gset(p->phy, cmd); | |
330 | } | |
331 | ||
332 | return err; | |
333 | } | |
334 | ||
335 | static int | |
336 | dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
337 | { | |
338 | struct dsa_slave_priv *p = netdev_priv(dev); | |
339 | ||
340 | if (p->phy != NULL) | |
341 | return phy_ethtool_sset(p->phy, cmd); | |
342 | ||
343 | return -EOPNOTSUPP; | |
344 | } | |
345 | ||
346 | static void dsa_slave_get_drvinfo(struct net_device *dev, | |
347 | struct ethtool_drvinfo *drvinfo) | |
348 | { | |
7826d43f JP |
349 | strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
350 | strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version)); | |
351 | strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); | |
352 | strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); | |
91da11f8 LB |
353 | } |
354 | ||
3d762a0f GR |
355 | static int dsa_slave_get_regs_len(struct net_device *dev) |
356 | { | |
357 | struct dsa_slave_priv *p = netdev_priv(dev); | |
358 | struct dsa_switch *ds = p->parent; | |
359 | ||
360 | if (ds->drv->get_regs_len) | |
361 | return ds->drv->get_regs_len(ds, p->port); | |
362 | ||
363 | return -EOPNOTSUPP; | |
364 | } | |
365 | ||
366 | static void | |
367 | dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) | |
368 | { | |
369 | struct dsa_slave_priv *p = netdev_priv(dev); | |
370 | struct dsa_switch *ds = p->parent; | |
371 | ||
372 | if (ds->drv->get_regs) | |
373 | ds->drv->get_regs(ds, p->port, regs, _p); | |
374 | } | |
375 | ||
91da11f8 LB |
376 | static int dsa_slave_nway_reset(struct net_device *dev) |
377 | { | |
378 | struct dsa_slave_priv *p = netdev_priv(dev); | |
379 | ||
380 | if (p->phy != NULL) | |
381 | return genphy_restart_aneg(p->phy); | |
382 | ||
383 | return -EOPNOTSUPP; | |
384 | } | |
385 | ||
386 | static u32 dsa_slave_get_link(struct net_device *dev) | |
387 | { | |
388 | struct dsa_slave_priv *p = netdev_priv(dev); | |
389 | ||
390 | if (p->phy != NULL) { | |
391 | genphy_update_link(p->phy); | |
392 | return p->phy->link; | |
393 | } | |
394 | ||
395 | return -EOPNOTSUPP; | |
396 | } | |
397 | ||
6793abb4 GR |
398 | static int dsa_slave_get_eeprom_len(struct net_device *dev) |
399 | { | |
400 | struct dsa_slave_priv *p = netdev_priv(dev); | |
401 | struct dsa_switch *ds = p->parent; | |
402 | ||
403 | if (ds->pd->eeprom_len) | |
404 | return ds->pd->eeprom_len; | |
405 | ||
406 | if (ds->drv->get_eeprom_len) | |
407 | return ds->drv->get_eeprom_len(ds); | |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
412 | static int dsa_slave_get_eeprom(struct net_device *dev, | |
413 | struct ethtool_eeprom *eeprom, u8 *data) | |
414 | { | |
415 | struct dsa_slave_priv *p = netdev_priv(dev); | |
416 | struct dsa_switch *ds = p->parent; | |
417 | ||
418 | if (ds->drv->get_eeprom) | |
419 | return ds->drv->get_eeprom(ds, eeprom, data); | |
420 | ||
421 | return -EOPNOTSUPP; | |
422 | } | |
423 | ||
424 | static int dsa_slave_set_eeprom(struct net_device *dev, | |
425 | struct ethtool_eeprom *eeprom, u8 *data) | |
426 | { | |
427 | struct dsa_slave_priv *p = netdev_priv(dev); | |
428 | struct dsa_switch *ds = p->parent; | |
429 | ||
430 | if (ds->drv->set_eeprom) | |
431 | return ds->drv->set_eeprom(ds, eeprom, data); | |
432 | ||
433 | return -EOPNOTSUPP; | |
434 | } | |
435 | ||
91da11f8 LB |
436 | static void dsa_slave_get_strings(struct net_device *dev, |
437 | uint32_t stringset, uint8_t *data) | |
438 | { | |
439 | struct dsa_slave_priv *p = netdev_priv(dev); | |
440 | struct dsa_switch *ds = p->parent; | |
441 | ||
442 | if (stringset == ETH_SS_STATS) { | |
443 | int len = ETH_GSTRING_LEN; | |
444 | ||
445 | strncpy(data, "tx_packets", len); | |
446 | strncpy(data + len, "tx_bytes", len); | |
447 | strncpy(data + 2 * len, "rx_packets", len); | |
448 | strncpy(data + 3 * len, "rx_bytes", len); | |
449 | if (ds->drv->get_strings != NULL) | |
450 | ds->drv->get_strings(ds, p->port, data + 4 * len); | |
451 | } | |
452 | } | |
453 | ||
454 | static void dsa_slave_get_ethtool_stats(struct net_device *dev, | |
455 | struct ethtool_stats *stats, | |
456 | uint64_t *data) | |
457 | { | |
458 | struct dsa_slave_priv *p = netdev_priv(dev); | |
459 | struct dsa_switch *ds = p->parent; | |
460 | ||
461 | data[0] = p->dev->stats.tx_packets; | |
462 | data[1] = p->dev->stats.tx_bytes; | |
463 | data[2] = p->dev->stats.rx_packets; | |
464 | data[3] = p->dev->stats.rx_bytes; | |
465 | if (ds->drv->get_ethtool_stats != NULL) | |
466 | ds->drv->get_ethtool_stats(ds, p->port, data + 4); | |
467 | } | |
468 | ||
469 | static int dsa_slave_get_sset_count(struct net_device *dev, int sset) | |
470 | { | |
471 | struct dsa_slave_priv *p = netdev_priv(dev); | |
472 | struct dsa_switch *ds = p->parent; | |
473 | ||
474 | if (sset == ETH_SS_STATS) { | |
475 | int count; | |
476 | ||
477 | count = 4; | |
478 | if (ds->drv->get_sset_count != NULL) | |
479 | count += ds->drv->get_sset_count(ds); | |
480 | ||
481 | return count; | |
482 | } | |
483 | ||
484 | return -EOPNOTSUPP; | |
485 | } | |
486 | ||
19e57c4e FF |
487 | static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
488 | { | |
489 | struct dsa_slave_priv *p = netdev_priv(dev); | |
490 | struct dsa_switch *ds = p->parent; | |
491 | ||
492 | if (ds->drv->get_wol) | |
493 | ds->drv->get_wol(ds, p->port, w); | |
494 | } | |
495 | ||
496 | static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) | |
497 | { | |
498 | struct dsa_slave_priv *p = netdev_priv(dev); | |
499 | struct dsa_switch *ds = p->parent; | |
500 | int ret = -EOPNOTSUPP; | |
501 | ||
502 | if (ds->drv->set_wol) | |
503 | ret = ds->drv->set_wol(ds, p->port, w); | |
504 | ||
505 | return ret; | |
506 | } | |
507 | ||
7905288f FF |
508 | static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) |
509 | { | |
510 | struct dsa_slave_priv *p = netdev_priv(dev); | |
511 | struct dsa_switch *ds = p->parent; | |
512 | int ret; | |
513 | ||
514 | if (!ds->drv->set_eee) | |
515 | return -EOPNOTSUPP; | |
516 | ||
517 | ret = ds->drv->set_eee(ds, p->port, p->phy, e); | |
518 | if (ret) | |
519 | return ret; | |
520 | ||
521 | if (p->phy) | |
522 | ret = phy_ethtool_set_eee(p->phy, e); | |
523 | ||
524 | return ret; | |
525 | } | |
526 | ||
527 | static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) | |
528 | { | |
529 | struct dsa_slave_priv *p = netdev_priv(dev); | |
530 | struct dsa_switch *ds = p->parent; | |
531 | int ret; | |
532 | ||
533 | if (!ds->drv->get_eee) | |
534 | return -EOPNOTSUPP; | |
535 | ||
536 | ret = ds->drv->get_eee(ds, p->port, e); | |
537 | if (ret) | |
538 | return ret; | |
539 | ||
540 | if (p->phy) | |
541 | ret = phy_ethtool_get_eee(p->phy, e); | |
542 | ||
543 | return ret; | |
544 | } | |
545 | ||
91da11f8 LB |
546 | static const struct ethtool_ops dsa_slave_ethtool_ops = { |
547 | .get_settings = dsa_slave_get_settings, | |
548 | .set_settings = dsa_slave_set_settings, | |
549 | .get_drvinfo = dsa_slave_get_drvinfo, | |
3d762a0f GR |
550 | .get_regs_len = dsa_slave_get_regs_len, |
551 | .get_regs = dsa_slave_get_regs, | |
91da11f8 LB |
552 | .nway_reset = dsa_slave_nway_reset, |
553 | .get_link = dsa_slave_get_link, | |
6793abb4 GR |
554 | .get_eeprom_len = dsa_slave_get_eeprom_len, |
555 | .get_eeprom = dsa_slave_get_eeprom, | |
556 | .set_eeprom = dsa_slave_set_eeprom, | |
91da11f8 LB |
557 | .get_strings = dsa_slave_get_strings, |
558 | .get_ethtool_stats = dsa_slave_get_ethtool_stats, | |
559 | .get_sset_count = dsa_slave_get_sset_count, | |
19e57c4e FF |
560 | .set_wol = dsa_slave_set_wol, |
561 | .get_wol = dsa_slave_get_wol, | |
7905288f FF |
562 | .set_eee = dsa_slave_set_eee, |
563 | .get_eee = dsa_slave_get_eee, | |
91da11f8 LB |
564 | }; |
565 | ||
3e8a72d1 | 566 | static const struct net_device_ops dsa_slave_netdev_ops = { |
c0840801 | 567 | .ndo_init = dsa_slave_init, |
d442ad4a SH |
568 | .ndo_open = dsa_slave_open, |
569 | .ndo_stop = dsa_slave_close, | |
3e8a72d1 | 570 | .ndo_start_xmit = dsa_slave_xmit, |
d442ad4a SH |
571 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, |
572 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a SH |
573 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
574 | .ndo_do_ioctl = dsa_slave_ioctl, | |
b73adef6 FF |
575 | .ndo_switch_parent_id_get = dsa_slave_parent_id_get, |
576 | .ndo_switch_port_stp_update = dsa_slave_stp_update, | |
d442ad4a | 577 | }; |
91da11f8 | 578 | |
0d8bcdd3 FF |
579 | static void dsa_slave_adjust_link(struct net_device *dev) |
580 | { | |
581 | struct dsa_slave_priv *p = netdev_priv(dev); | |
ec9436ba | 582 | struct dsa_switch *ds = p->parent; |
0d8bcdd3 FF |
583 | unsigned int status_changed = 0; |
584 | ||
585 | if (p->old_link != p->phy->link) { | |
586 | status_changed = 1; | |
587 | p->old_link = p->phy->link; | |
588 | } | |
589 | ||
590 | if (p->old_duplex != p->phy->duplex) { | |
591 | status_changed = 1; | |
592 | p->old_duplex = p->phy->duplex; | |
593 | } | |
594 | ||
595 | if (p->old_pause != p->phy->pause) { | |
596 | status_changed = 1; | |
597 | p->old_pause = p->phy->pause; | |
598 | } | |
599 | ||
ec9436ba FF |
600 | if (ds->drv->adjust_link && status_changed) |
601 | ds->drv->adjust_link(ds, p->port, p->phy); | |
602 | ||
0d8bcdd3 FF |
603 | if (status_changed) |
604 | phy_print_status(p->phy); | |
605 | } | |
606 | ||
ce31b31c FF |
607 | static int dsa_slave_fixed_link_update(struct net_device *dev, |
608 | struct fixed_phy_status *status) | |
609 | { | |
610 | struct dsa_slave_priv *p = netdev_priv(dev); | |
611 | struct dsa_switch *ds = p->parent; | |
612 | ||
613 | if (ds->drv->fixed_link_update) | |
614 | ds->drv->fixed_link_update(ds, p->port, status); | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
91da11f8 | 619 | /* slave device setup *******************************************************/ |
c305c165 FF |
620 | static int dsa_slave_phy_connect(struct dsa_slave_priv *p, |
621 | struct net_device *slave_dev) | |
622 | { | |
623 | struct dsa_switch *ds = p->parent; | |
624 | ||
625 | p->phy = ds->slave_mii_bus->phy_map[p->port]; | |
626 | if (!p->phy) | |
627 | return -ENODEV; | |
628 | ||
629 | /* Use already configured phy mode */ | |
630 | p->phy_interface = p->phy->interface; | |
631 | phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, | |
632 | p->phy_interface); | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
9697f1cd | 637 | static int dsa_slave_phy_setup(struct dsa_slave_priv *p, |
0d8bcdd3 FF |
638 | struct net_device *slave_dev) |
639 | { | |
640 | struct dsa_switch *ds = p->parent; | |
641 | struct dsa_chip_data *cd = ds->pd; | |
642 | struct device_node *phy_dn, *port_dn; | |
ce31b31c | 643 | bool phy_is_fixed = false; |
6819563e | 644 | u32 phy_flags = 0; |
19334920 | 645 | int mode, ret; |
0d8bcdd3 FF |
646 | |
647 | port_dn = cd->port_dn[p->port]; | |
19334920 GR |
648 | mode = of_get_phy_mode(port_dn); |
649 | if (mode < 0) | |
650 | mode = PHY_INTERFACE_MODE_NA; | |
651 | p->phy_interface = mode; | |
0d8bcdd3 FF |
652 | |
653 | phy_dn = of_parse_phandle(port_dn, "phy-handle", 0); | |
654 | if (of_phy_is_fixed_link(port_dn)) { | |
655 | /* In the case of a fixed PHY, the DT node associated | |
656 | * to the fixed PHY is the Port DT node | |
657 | */ | |
658 | ret = of_phy_register_fixed_link(port_dn); | |
659 | if (ret) { | |
a2ae6007 | 660 | netdev_err(slave_dev, "failed to register fixed PHY\n"); |
9697f1cd | 661 | return ret; |
0d8bcdd3 | 662 | } |
ce31b31c | 663 | phy_is_fixed = true; |
0d8bcdd3 FF |
664 | phy_dn = port_dn; |
665 | } | |
666 | ||
6819563e FF |
667 | if (ds->drv->get_phy_flags) |
668 | phy_flags = ds->drv->get_phy_flags(ds, p->port); | |
669 | ||
0d8bcdd3 FF |
670 | if (phy_dn) |
671 | p->phy = of_phy_connect(slave_dev, phy_dn, | |
6819563e | 672 | dsa_slave_adjust_link, phy_flags, |
0d8bcdd3 FF |
673 | p->phy_interface); |
674 | ||
ce31b31c FF |
675 | if (p->phy && phy_is_fixed) |
676 | fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update); | |
677 | ||
0d8bcdd3 FF |
678 | /* We could not connect to a designated PHY, so use the switch internal |
679 | * MDIO bus instead | |
680 | */ | |
b31f65fb | 681 | if (!p->phy) { |
c305c165 FF |
682 | ret = dsa_slave_phy_connect(p, slave_dev); |
683 | if (ret) | |
684 | return ret; | |
b31f65fb | 685 | } else { |
a2ae6007 JP |
686 | netdev_info(slave_dev, "attached PHY at address %d [%s]\n", |
687 | p->phy->addr, p->phy->drv->name); | |
b31f65fb | 688 | } |
9697f1cd FF |
689 | |
690 | return 0; | |
0d8bcdd3 FF |
691 | } |
692 | ||
24462549 FF |
693 | int dsa_slave_suspend(struct net_device *slave_dev) |
694 | { | |
695 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
696 | ||
697 | netif_device_detach(slave_dev); | |
698 | ||
699 | if (p->phy) { | |
700 | phy_stop(p->phy); | |
701 | p->old_pause = -1; | |
702 | p->old_link = -1; | |
703 | p->old_duplex = -1; | |
704 | phy_suspend(p->phy); | |
705 | } | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
710 | int dsa_slave_resume(struct net_device *slave_dev) | |
711 | { | |
712 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
713 | ||
714 | netif_device_attach(slave_dev); | |
715 | ||
716 | if (p->phy) { | |
717 | phy_resume(p->phy); | |
718 | phy_start(p->phy); | |
719 | } | |
720 | ||
721 | return 0; | |
722 | } | |
723 | ||
d87d6f44 GR |
724 | int dsa_slave_create(struct dsa_switch *ds, struct device *parent, |
725 | int port, char *name) | |
91da11f8 | 726 | { |
e84665c9 | 727 | struct net_device *master = ds->dst->master_netdev; |
91da11f8 LB |
728 | struct net_device *slave_dev; |
729 | struct dsa_slave_priv *p; | |
730 | int ret; | |
731 | ||
c835a677 TG |
732 | slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name, |
733 | NET_NAME_UNKNOWN, ether_setup); | |
91da11f8 | 734 | if (slave_dev == NULL) |
d87d6f44 | 735 | return -ENOMEM; |
91da11f8 LB |
736 | |
737 | slave_dev->features = master->vlan_features; | |
7ad24ea4 | 738 | slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; |
2fcc8005 | 739 | eth_hw_addr_inherit(slave_dev, master); |
91da11f8 | 740 | slave_dev->tx_queue_len = 0; |
3e8a72d1 | 741 | slave_dev->netdev_ops = &dsa_slave_netdev_ops; |
d442ad4a | 742 | |
5075314e AD |
743 | SET_NETDEV_DEV(slave_dev, parent); |
744 | slave_dev->dev.of_node = ds->pd->port_dn[port]; | |
745 | slave_dev->vlan_features = master->vlan_features; | |
746 | ||
747 | p = netdev_priv(slave_dev); | |
748 | p->dev = slave_dev; | |
749 | p->parent = ds; | |
750 | p->port = port; | |
751 | ||
e84665c9 | 752 | switch (ds->dst->tag_protocol) { |
cf85d08f | 753 | #ifdef CONFIG_NET_DSA_TAG_DSA |
ac7a04c3 | 754 | case DSA_TAG_PROTO_DSA: |
5075314e | 755 | p->xmit = dsa_netdev_ops.xmit; |
cf85d08f LB |
756 | break; |
757 | #endif | |
91da11f8 | 758 | #ifdef CONFIG_NET_DSA_TAG_EDSA |
ac7a04c3 | 759 | case DSA_TAG_PROTO_EDSA: |
5075314e | 760 | p->xmit = edsa_netdev_ops.xmit; |
91da11f8 | 761 | break; |
396138f0 LB |
762 | #endif |
763 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
ac7a04c3 | 764 | case DSA_TAG_PROTO_TRAILER: |
5075314e | 765 | p->xmit = trailer_netdev_ops.xmit; |
396138f0 | 766 | break; |
5037d532 FF |
767 | #endif |
768 | #ifdef CONFIG_NET_DSA_TAG_BRCM | |
ac7a04c3 | 769 | case DSA_TAG_PROTO_BRCM: |
5075314e | 770 | p->xmit = brcm_netdev_ops.xmit; |
5037d532 | 771 | break; |
91da11f8 LB |
772 | #endif |
773 | default: | |
5075314e | 774 | p->xmit = dsa_slave_notag_xmit; |
5aed85ce | 775 | break; |
91da11f8 | 776 | } |
d442ad4a | 777 | |
0d8bcdd3 FF |
778 | p->old_pause = -1; |
779 | p->old_link = -1; | |
780 | p->old_duplex = -1; | |
781 | ||
9697f1cd FF |
782 | ret = dsa_slave_phy_setup(p, slave_dev); |
783 | if (ret) { | |
784 | free_netdev(slave_dev); | |
d87d6f44 | 785 | return ret; |
9697f1cd | 786 | } |
91da11f8 | 787 | |
d87d6f44 | 788 | ds->ports[port] = slave_dev; |
91da11f8 LB |
789 | ret = register_netdev(slave_dev); |
790 | if (ret) { | |
a2ae6007 JP |
791 | netdev_err(master, "error %d registering interface %s\n", |
792 | ret, slave_dev->name); | |
9697f1cd | 793 | phy_disconnect(p->phy); |
d87d6f44 | 794 | ds->ports[port] = NULL; |
91da11f8 | 795 | free_netdev(slave_dev); |
d87d6f44 | 796 | return ret; |
91da11f8 LB |
797 | } |
798 | ||
799 | netif_carrier_off(slave_dev); | |
800 | ||
d87d6f44 | 801 | return 0; |
91da11f8 | 802 | } |
b73adef6 FF |
803 | |
804 | static bool dsa_slave_dev_check(struct net_device *dev) | |
805 | { | |
806 | return dev->netdev_ops == &dsa_slave_netdev_ops; | |
807 | } | |
808 | ||
809 | static int dsa_slave_master_changed(struct net_device *dev) | |
810 | { | |
811 | struct net_device *master = netdev_master_upper_dev_get(dev); | |
812 | int err = 0; | |
813 | ||
814 | if (master && master->rtnl_link_ops && | |
815 | !strcmp(master->rtnl_link_ops->kind, "bridge")) | |
816 | err = dsa_slave_bridge_port_join(dev, master); | |
817 | else | |
818 | err = dsa_slave_bridge_port_leave(dev); | |
819 | ||
820 | return err; | |
821 | } | |
822 | ||
823 | int dsa_slave_netdevice_event(struct notifier_block *unused, | |
824 | unsigned long event, void *ptr) | |
825 | { | |
826 | struct net_device *dev; | |
827 | int err = 0; | |
828 | ||
829 | switch (event) { | |
830 | case NETDEV_CHANGEUPPER: | |
831 | dev = netdev_notifier_info_to_dev(ptr); | |
832 | if (!dsa_slave_dev_check(dev)) | |
833 | goto out; | |
834 | ||
835 | err = dsa_slave_master_changed(dev); | |
836 | if (err) | |
837 | netdev_warn(dev, "failed to reflect master change\n"); | |
838 | ||
839 | break; | |
840 | } | |
841 | ||
842 | out: | |
843 | return NOTIFY_DONE; | |
844 | } |