Commit | Line | Data |
---|---|---|
91da11f8 LB |
1 | /* |
2 | * net/dsa/dsa.c - Hardware switch handling | |
e84665c9 | 3 | * Copyright (c) 2008-2009 Marvell Semiconductor |
5e95329b | 4 | * Copyright (c) 2013 Florian Fainelli <florian@openwrt.org> |
91da11f8 LB |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | */ | |
11 | ||
51579c3f GR |
12 | #include <linux/ctype.h> |
13 | #include <linux/device.h> | |
14 | #include <linux/hwmon.h> | |
91da11f8 | 15 | #include <linux/list.h> |
91da11f8 | 16 | #include <linux/platform_device.h> |
5a0e3ad6 | 17 | #include <linux/slab.h> |
3a9a231d | 18 | #include <linux/module.h> |
91da11f8 | 19 | #include <net/dsa.h> |
5e95329b FF |
20 | #include <linux/of.h> |
21 | #include <linux/of_mdio.h> | |
22 | #include <linux/of_platform.h> | |
769a0202 | 23 | #include <linux/of_net.h> |
cc30c163 | 24 | #include <linux/of_gpio.h> |
51579c3f | 25 | #include <linux/sysfs.h> |
cbc5d90b | 26 | #include <linux/phy_fixed.h> |
85beabfe | 27 | #include <linux/gpio/consumer.h> |
91da11f8 LB |
28 | #include "dsa_priv.h" |
29 | ||
30 | char dsa_driver_version[] = "0.1"; | |
31 | ||
39a7f2a4 AL |
32 | static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb, |
33 | struct net_device *dev) | |
34 | { | |
35 | /* Just return the original SKB */ | |
36 | return skb; | |
37 | } | |
38 | ||
39 | static const struct dsa_device_ops none_ops = { | |
40 | .xmit = dsa_slave_notag_xmit, | |
41 | .rcv = NULL, | |
42 | }; | |
43 | ||
44 | const struct dsa_device_ops *dsa_device_ops[DSA_TAG_LAST] = { | |
45 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
46 | [DSA_TAG_PROTO_DSA] = &dsa_netdev_ops, | |
47 | #endif | |
48 | #ifdef CONFIG_NET_DSA_TAG_EDSA | |
49 | [DSA_TAG_PROTO_EDSA] = &edsa_netdev_ops, | |
50 | #endif | |
51 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
52 | [DSA_TAG_PROTO_TRAILER] = &trailer_netdev_ops, | |
53 | #endif | |
54 | #ifdef CONFIG_NET_DSA_TAG_BRCM | |
55 | [DSA_TAG_PROTO_BRCM] = &brcm_netdev_ops, | |
56 | #endif | |
57 | [DSA_TAG_PROTO_NONE] = &none_ops, | |
58 | }; | |
91da11f8 LB |
59 | |
60 | /* switch driver registration ***********************************************/ | |
61 | static DEFINE_MUTEX(dsa_switch_drivers_mutex); | |
62 | static LIST_HEAD(dsa_switch_drivers); | |
63 | ||
64 | void register_switch_driver(struct dsa_switch_driver *drv) | |
65 | { | |
66 | mutex_lock(&dsa_switch_drivers_mutex); | |
67 | list_add_tail(&drv->list, &dsa_switch_drivers); | |
68 | mutex_unlock(&dsa_switch_drivers_mutex); | |
69 | } | |
ad293b8a | 70 | EXPORT_SYMBOL_GPL(register_switch_driver); |
91da11f8 LB |
71 | |
72 | void unregister_switch_driver(struct dsa_switch_driver *drv) | |
73 | { | |
74 | mutex_lock(&dsa_switch_drivers_mutex); | |
75 | list_del_init(&drv->list); | |
76 | mutex_unlock(&dsa_switch_drivers_mutex); | |
77 | } | |
ad293b8a | 78 | EXPORT_SYMBOL_GPL(unregister_switch_driver); |
91da11f8 LB |
79 | |
80 | static struct dsa_switch_driver * | |
bbb8d793 | 81 | dsa_switch_probe(struct device *parent, struct device *host_dev, int sw_addr, |
0209d144 | 82 | const char **_name, void **priv) |
91da11f8 LB |
83 | { |
84 | struct dsa_switch_driver *ret; | |
85 | struct list_head *list; | |
0209d144 | 86 | const char *name; |
91da11f8 LB |
87 | |
88 | ret = NULL; | |
89 | name = NULL; | |
90 | ||
91 | mutex_lock(&dsa_switch_drivers_mutex); | |
92 | list_for_each(list, &dsa_switch_drivers) { | |
93 | struct dsa_switch_driver *drv; | |
94 | ||
95 | drv = list_entry(list, struct dsa_switch_driver, list); | |
96 | ||
7543a6d5 | 97 | name = drv->probe(parent, host_dev, sw_addr, priv); |
91da11f8 LB |
98 | if (name != NULL) { |
99 | ret = drv; | |
100 | break; | |
101 | } | |
102 | } | |
103 | mutex_unlock(&dsa_switch_drivers_mutex); | |
104 | ||
105 | *_name = name; | |
106 | ||
107 | return ret; | |
108 | } | |
109 | ||
51579c3f GR |
110 | /* hwmon support ************************************************************/ |
111 | ||
112 | #ifdef CONFIG_NET_DSA_HWMON | |
113 | ||
114 | static ssize_t temp1_input_show(struct device *dev, | |
115 | struct device_attribute *attr, char *buf) | |
116 | { | |
117 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
118 | int temp, ret; | |
119 | ||
120 | ret = ds->drv->get_temp(ds, &temp); | |
121 | if (ret < 0) | |
122 | return ret; | |
123 | ||
124 | return sprintf(buf, "%d\n", temp * 1000); | |
125 | } | |
126 | static DEVICE_ATTR_RO(temp1_input); | |
127 | ||
128 | static ssize_t temp1_max_show(struct device *dev, | |
129 | struct device_attribute *attr, char *buf) | |
130 | { | |
131 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
132 | int temp, ret; | |
133 | ||
134 | ret = ds->drv->get_temp_limit(ds, &temp); | |
135 | if (ret < 0) | |
136 | return ret; | |
137 | ||
138 | return sprintf(buf, "%d\n", temp * 1000); | |
139 | } | |
140 | ||
141 | static ssize_t temp1_max_store(struct device *dev, | |
142 | struct device_attribute *attr, const char *buf, | |
143 | size_t count) | |
144 | { | |
145 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
146 | int temp, ret; | |
147 | ||
148 | ret = kstrtoint(buf, 0, &temp); | |
149 | if (ret < 0) | |
150 | return ret; | |
151 | ||
152 | ret = ds->drv->set_temp_limit(ds, DIV_ROUND_CLOSEST(temp, 1000)); | |
153 | if (ret < 0) | |
154 | return ret; | |
155 | ||
156 | return count; | |
157 | } | |
e3122b7f | 158 | static DEVICE_ATTR_RW(temp1_max); |
51579c3f GR |
159 | |
160 | static ssize_t temp1_max_alarm_show(struct device *dev, | |
161 | struct device_attribute *attr, char *buf) | |
162 | { | |
163 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
164 | bool alarm; | |
165 | int ret; | |
166 | ||
167 | ret = ds->drv->get_temp_alarm(ds, &alarm); | |
168 | if (ret < 0) | |
169 | return ret; | |
170 | ||
171 | return sprintf(buf, "%d\n", alarm); | |
172 | } | |
173 | static DEVICE_ATTR_RO(temp1_max_alarm); | |
174 | ||
175 | static struct attribute *dsa_hwmon_attrs[] = { | |
176 | &dev_attr_temp1_input.attr, /* 0 */ | |
177 | &dev_attr_temp1_max.attr, /* 1 */ | |
178 | &dev_attr_temp1_max_alarm.attr, /* 2 */ | |
179 | NULL | |
180 | }; | |
181 | ||
182 | static umode_t dsa_hwmon_attrs_visible(struct kobject *kobj, | |
183 | struct attribute *attr, int index) | |
184 | { | |
185 | struct device *dev = container_of(kobj, struct device, kobj); | |
186 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
187 | struct dsa_switch_driver *drv = ds->drv; | |
188 | umode_t mode = attr->mode; | |
189 | ||
190 | if (index == 1) { | |
191 | if (!drv->get_temp_limit) | |
192 | mode = 0; | |
e3122b7f VD |
193 | else if (!drv->set_temp_limit) |
194 | mode &= ~S_IWUSR; | |
51579c3f GR |
195 | } else if (index == 2 && !drv->get_temp_alarm) { |
196 | mode = 0; | |
197 | } | |
198 | return mode; | |
199 | } | |
200 | ||
201 | static const struct attribute_group dsa_hwmon_group = { | |
202 | .attrs = dsa_hwmon_attrs, | |
203 | .is_visible = dsa_hwmon_attrs_visible, | |
204 | }; | |
205 | __ATTRIBUTE_GROUPS(dsa_hwmon); | |
206 | ||
207 | #endif /* CONFIG_NET_DSA_HWMON */ | |
91da11f8 LB |
208 | |
209 | /* basic switch operations **************************************************/ | |
9b8e895c AL |
210 | int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev, |
211 | struct device_node *port_dn, int port) | |
39b0c705 | 212 | { |
39b0c705 | 213 | struct phy_device *phydev; |
9b8e895c AL |
214 | int ret, mode; |
215 | ||
216 | if (of_phy_is_fixed_link(port_dn)) { | |
217 | ret = of_phy_register_fixed_link(port_dn); | |
218 | if (ret) { | |
219 | dev_err(dev, "failed to register fixed PHY\n"); | |
220 | return ret; | |
221 | } | |
222 | phydev = of_phy_find_device(port_dn); | |
223 | ||
224 | mode = of_get_phy_mode(port_dn); | |
225 | if (mode < 0) | |
226 | mode = PHY_INTERFACE_MODE_NA; | |
227 | phydev->interface = mode; | |
228 | ||
229 | genphy_config_init(phydev); | |
230 | genphy_read_status(phydev); | |
231 | if (ds->drv->adjust_link) | |
232 | ds->drv->adjust_link(ds, port, phydev); | |
233 | } | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | static int dsa_cpu_dsa_setups(struct dsa_switch *ds, struct device *dev) | |
239 | { | |
240 | struct device_node *port_dn; | |
241 | int ret, port; | |
39b0c705 AL |
242 | |
243 | for (port = 0; port < DSA_MAX_PORTS; port++) { | |
244 | if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) | |
245 | continue; | |
246 | ||
189b0d93 | 247 | port_dn = ds->ports[port].dn; |
9b8e895c AL |
248 | ret = dsa_cpu_dsa_setup(ds, dev, port_dn, port); |
249 | if (ret) | |
250 | return ret; | |
39b0c705 AL |
251 | } |
252 | return 0; | |
253 | } | |
254 | ||
39a7f2a4 AL |
255 | const struct dsa_device_ops *dsa_resolve_tag_protocol(int tag_protocol) |
256 | { | |
257 | const struct dsa_device_ops *ops; | |
258 | ||
259 | if (tag_protocol >= DSA_TAG_LAST) | |
260 | return ERR_PTR(-EINVAL); | |
261 | ops = dsa_device_ops[tag_protocol]; | |
262 | ||
263 | if (!ops) | |
264 | return ERR_PTR(-ENOPROTOOPT); | |
265 | ||
266 | return ops; | |
267 | } | |
268 | ||
0c73c523 FF |
269 | int dsa_cpu_port_ethtool_setup(struct dsa_switch *ds) |
270 | { | |
271 | struct net_device *master; | |
272 | struct ethtool_ops *cpu_ops; | |
273 | ||
274 | master = ds->dst->master_netdev; | |
275 | if (ds->master_netdev) | |
276 | master = ds->master_netdev; | |
277 | ||
278 | cpu_ops = devm_kzalloc(ds->dev, sizeof(*cpu_ops), GFP_KERNEL); | |
279 | if (!cpu_ops) | |
280 | return -ENOMEM; | |
281 | ||
282 | memcpy(&ds->dst->master_ethtool_ops, master->ethtool_ops, | |
283 | sizeof(struct ethtool_ops)); | |
284 | ds->dst->master_orig_ethtool_ops = master->ethtool_ops; | |
285 | memcpy(cpu_ops, &ds->dst->master_ethtool_ops, | |
286 | sizeof(struct ethtool_ops)); | |
287 | dsa_cpu_port_ethtool_init(cpu_ops); | |
288 | master->ethtool_ops = cpu_ops; | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | void dsa_cpu_port_ethtool_restore(struct dsa_switch *ds) | |
294 | { | |
295 | struct net_device *master; | |
296 | ||
297 | master = ds->dst->master_netdev; | |
298 | if (ds->master_netdev) | |
299 | master = ds->master_netdev; | |
300 | ||
301 | master->ethtool_ops = ds->dst->master_orig_ethtool_ops; | |
302 | } | |
303 | ||
df197195 | 304 | static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent) |
91da11f8 | 305 | { |
df197195 FF |
306 | struct dsa_switch_driver *drv = ds->drv; |
307 | struct dsa_switch_tree *dst = ds->dst; | |
ff04955c | 308 | struct dsa_chip_data *cd = ds->cd; |
f9bf5a2c | 309 | bool valid_name_found = false; |
df197195 FF |
310 | int index = ds->index; |
311 | int i, ret; | |
91da11f8 LB |
312 | |
313 | /* | |
314 | * Validate supplied switch configuration. | |
315 | */ | |
91da11f8 LB |
316 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
317 | char *name; | |
318 | ||
ff04955c | 319 | name = cd->port_names[i]; |
91da11f8 LB |
320 | if (name == NULL) |
321 | continue; | |
322 | ||
323 | if (!strcmp(name, "cpu")) { | |
e84665c9 | 324 | if (dst->cpu_switch != -1) { |
a2ae6007 JP |
325 | netdev_err(dst->master_netdev, |
326 | "multiple cpu ports?!\n"); | |
91da11f8 LB |
327 | ret = -EINVAL; |
328 | goto out; | |
329 | } | |
e84665c9 LB |
330 | dst->cpu_switch = index; |
331 | dst->cpu_port = i; | |
83c0afae | 332 | ds->cpu_port_mask |= 1 << i; |
e84665c9 LB |
333 | } else if (!strcmp(name, "dsa")) { |
334 | ds->dsa_port_mask |= 1 << i; | |
91da11f8 | 335 | } else { |
74c3e2a5 | 336 | ds->enabled_port_mask |= 1 << i; |
91da11f8 | 337 | } |
f9bf5a2c | 338 | valid_name_found = true; |
91da11f8 LB |
339 | } |
340 | ||
f9bf5a2c FF |
341 | if (!valid_name_found && i == DSA_MAX_PORTS) { |
342 | ret = -EINVAL; | |
343 | goto out; | |
344 | } | |
91da11f8 | 345 | |
0d8bcdd3 FF |
346 | /* Make the built-in MII bus mask match the number of ports, |
347 | * switch drivers can override this later | |
348 | */ | |
74c3e2a5 | 349 | ds->phys_mii_mask = ds->enabled_port_mask; |
0d8bcdd3 | 350 | |
91da11f8 | 351 | /* |
e84665c9 LB |
352 | * If the CPU connects to this switch, set the switch tree |
353 | * tagging protocol to the preferred tagging format of this | |
354 | * switch. | |
91da11f8 | 355 | */ |
5075314e | 356 | if (dst->cpu_switch == index) { |
39a7f2a4 AL |
357 | dst->tag_ops = dsa_resolve_tag_protocol(drv->tag_protocol); |
358 | if (IS_ERR(dst->tag_ops)) { | |
359 | ret = PTR_ERR(dst->tag_ops); | |
ae439286 | 360 | goto out; |
5075314e | 361 | } |
91da11f8 | 362 | |
39a7f2a4 | 363 | dst->rcv = dst->tag_ops->rcv; |
5075314e | 364 | } |
91da11f8 | 365 | |
66472fc0 AL |
366 | memcpy(ds->rtable, cd->rtable, sizeof(ds->rtable)); |
367 | ||
91da11f8 LB |
368 | /* |
369 | * Do basic register setup. | |
370 | */ | |
371 | ret = drv->setup(ds); | |
372 | if (ret < 0) | |
373 | goto out; | |
374 | ||
e84665c9 | 375 | ret = drv->set_addr(ds, dst->master_netdev->dev_addr); |
91da11f8 LB |
376 | if (ret < 0) |
377 | goto out; | |
378 | ||
e755e49e AL |
379 | if (!ds->slave_mii_bus && drv->phy_read) { |
380 | ds->slave_mii_bus = devm_mdiobus_alloc(parent); | |
381 | if (!ds->slave_mii_bus) { | |
382 | ret = -ENOMEM; | |
383 | goto out; | |
384 | } | |
385 | dsa_slave_mii_bus_init(ds); | |
91da11f8 | 386 | |
e755e49e AL |
387 | ret = mdiobus_register(ds->slave_mii_bus); |
388 | if (ret < 0) | |
389 | goto out; | |
390 | } | |
91da11f8 LB |
391 | |
392 | /* | |
393 | * Create network devices for physical switch ports. | |
394 | */ | |
91da11f8 | 395 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
189b0d93 AL |
396 | ds->ports[i].dn = cd->port_dn[i]; |
397 | ||
74c3e2a5 | 398 | if (!(ds->enabled_port_mask & (1 << i))) |
91da11f8 LB |
399 | continue; |
400 | ||
ff04955c | 401 | ret = dsa_slave_create(ds, parent, i, cd->port_names[i]); |
d87d6f44 | 402 | if (ret < 0) { |
d25b8e74 | 403 | netdev_err(dst->master_netdev, "[%d]: can't create dsa slave device for port %d(%s): %d\n", |
ff04955c | 404 | index, i, cd->port_names[i], ret); |
d87d6f44 | 405 | ret = 0; |
91da11f8 | 406 | } |
91da11f8 LB |
407 | } |
408 | ||
39b0c705 | 409 | /* Perform configuration of the CPU and DSA ports */ |
9b8e895c | 410 | ret = dsa_cpu_dsa_setups(ds, parent); |
39b0c705 AL |
411 | if (ret < 0) { |
412 | netdev_err(dst->master_netdev, "[%d] : can't configure CPU and DSA ports\n", | |
413 | index); | |
414 | ret = 0; | |
415 | } | |
416 | ||
0c73c523 FF |
417 | ret = dsa_cpu_port_ethtool_setup(ds); |
418 | if (ret) | |
419 | return ret; | |
420 | ||
51579c3f GR |
421 | #ifdef CONFIG_NET_DSA_HWMON |
422 | /* If the switch provides a temperature sensor, | |
423 | * register with hardware monitoring subsystem. | |
424 | * Treat registration error as non-fatal and ignore it. | |
425 | */ | |
426 | if (drv->get_temp) { | |
427 | const char *netname = netdev_name(dst->master_netdev); | |
428 | char hname[IFNAMSIZ + 1]; | |
429 | int i, j; | |
430 | ||
431 | /* Create valid hwmon 'name' attribute */ | |
432 | for (i = j = 0; i < IFNAMSIZ && netname[i]; i++) { | |
433 | if (isalnum(netname[i])) | |
434 | hname[j++] = netname[i]; | |
435 | } | |
436 | hname[j] = '\0'; | |
437 | scnprintf(ds->hwmon_name, sizeof(ds->hwmon_name), "%s_dsa%d", | |
438 | hname, index); | |
439 | ds->hwmon_dev = hwmon_device_register_with_groups(NULL, | |
440 | ds->hwmon_name, ds, dsa_hwmon_groups); | |
441 | if (IS_ERR(ds->hwmon_dev)) | |
442 | ds->hwmon_dev = NULL; | |
443 | } | |
444 | #endif /* CONFIG_NET_DSA_HWMON */ | |
445 | ||
df197195 | 446 | return ret; |
91da11f8 | 447 | |
91da11f8 | 448 | out: |
df197195 FF |
449 | return ret; |
450 | } | |
451 | ||
452 | static struct dsa_switch * | |
453 | dsa_switch_setup(struct dsa_switch_tree *dst, int index, | |
454 | struct device *parent, struct device *host_dev) | |
455 | { | |
ff04955c | 456 | struct dsa_chip_data *cd = dst->pd->chip + index; |
df197195 FF |
457 | struct dsa_switch_driver *drv; |
458 | struct dsa_switch *ds; | |
459 | int ret; | |
0209d144 | 460 | const char *name; |
7543a6d5 | 461 | void *priv; |
df197195 FF |
462 | |
463 | /* | |
464 | * Probe for switch model. | |
465 | */ | |
ff04955c | 466 | drv = dsa_switch_probe(parent, host_dev, cd->sw_addr, &name, &priv); |
df197195 FF |
467 | if (drv == NULL) { |
468 | netdev_err(dst->master_netdev, "[%d]: could not detect attached switch\n", | |
469 | index); | |
470 | return ERR_PTR(-EINVAL); | |
471 | } | |
472 | netdev_info(dst->master_netdev, "[%d]: detected a %s switch\n", | |
473 | index, name); | |
474 | ||
475 | ||
476 | /* | |
477 | * Allocate and initialise switch state. | |
478 | */ | |
5feebd0a | 479 | ds = devm_kzalloc(parent, sizeof(*ds), GFP_KERNEL); |
df197195 | 480 | if (ds == NULL) |
24595346 | 481 | return ERR_PTR(-ENOMEM); |
df197195 FF |
482 | |
483 | ds->dst = dst; | |
484 | ds->index = index; | |
ff04955c | 485 | ds->cd = cd; |
df197195 | 486 | ds->drv = drv; |
7543a6d5 | 487 | ds->priv = priv; |
c33063d6 | 488 | ds->dev = parent; |
df197195 FF |
489 | |
490 | ret = dsa_switch_setup_one(ds, parent); | |
491 | if (ret) | |
24595346 | 492 | return ERR_PTR(ret); |
df197195 FF |
493 | |
494 | return ds; | |
91da11f8 LB |
495 | } |
496 | ||
9b8e895c | 497 | void dsa_cpu_dsa_destroy(struct device_node *port_dn) |
91da11f8 | 498 | { |
cbc5d90b | 499 | struct phy_device *phydev; |
9b8e895c AL |
500 | |
501 | if (of_phy_is_fixed_link(port_dn)) { | |
502 | phydev = of_phy_find_device(port_dn); | |
503 | if (phydev) { | |
504 | phy_device_free(phydev); | |
505 | fixed_phy_unregister(phydev); | |
506 | } | |
507 | } | |
508 | } | |
509 | ||
510 | static void dsa_switch_destroy(struct dsa_switch *ds) | |
511 | { | |
cbc5d90b NA |
512 | int port; |
513 | ||
51579c3f GR |
514 | #ifdef CONFIG_NET_DSA_HWMON |
515 | if (ds->hwmon_dev) | |
516 | hwmon_device_unregister(ds->hwmon_dev); | |
517 | #endif | |
cbc5d90b | 518 | |
3a44514f AL |
519 | /* Destroy network devices for physical switch ports. */ |
520 | for (port = 0; port < DSA_MAX_PORTS; port++) { | |
74c3e2a5 | 521 | if (!(ds->enabled_port_mask & (1 << port))) |
3a44514f AL |
522 | continue; |
523 | ||
c8b09808 | 524 | if (!ds->ports[port].netdev) |
3a44514f AL |
525 | continue; |
526 | ||
c8b09808 | 527 | dsa_slave_destroy(ds->ports[port].netdev); |
3a44514f AL |
528 | } |
529 | ||
9b8e895c | 530 | /* Disable configuration of the CPU and DSA ports */ |
cbc5d90b | 531 | for (port = 0; port < DSA_MAX_PORTS; port++) { |
9b8e895c AL |
532 | if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) |
533 | continue; | |
534 | dsa_cpu_dsa_destroy(ds->ports[port].dn); | |
83c0afae AL |
535 | |
536 | /* Clearing a bit which is not set does no harm */ | |
537 | ds->cpu_port_mask |= ~(1 << port); | |
538 | ds->dsa_port_mask |= ~(1 << port); | |
cbc5d90b NA |
539 | } |
540 | ||
e755e49e AL |
541 | if (ds->slave_mii_bus && ds->drv->phy_read) |
542 | mdiobus_unregister(ds->slave_mii_bus); | |
91da11f8 LB |
543 | } |
544 | ||
e506d405 | 545 | #ifdef CONFIG_PM_SLEEP |
24462549 FF |
546 | static int dsa_switch_suspend(struct dsa_switch *ds) |
547 | { | |
548 | int i, ret = 0; | |
549 | ||
550 | /* Suspend slave network devices */ | |
551 | for (i = 0; i < DSA_MAX_PORTS; i++) { | |
d79d2107 | 552 | if (!dsa_is_port_initialized(ds, i)) |
24462549 FF |
553 | continue; |
554 | ||
c8b09808 | 555 | ret = dsa_slave_suspend(ds->ports[i].netdev); |
24462549 FF |
556 | if (ret) |
557 | return ret; | |
558 | } | |
559 | ||
560 | if (ds->drv->suspend) | |
561 | ret = ds->drv->suspend(ds); | |
562 | ||
563 | return ret; | |
564 | } | |
565 | ||
566 | static int dsa_switch_resume(struct dsa_switch *ds) | |
567 | { | |
568 | int i, ret = 0; | |
569 | ||
570 | if (ds->drv->resume) | |
571 | ret = ds->drv->resume(ds); | |
572 | ||
573 | if (ret) | |
574 | return ret; | |
575 | ||
576 | /* Resume slave network devices */ | |
577 | for (i = 0; i < DSA_MAX_PORTS; i++) { | |
d79d2107 | 578 | if (!dsa_is_port_initialized(ds, i)) |
24462549 FF |
579 | continue; |
580 | ||
c8b09808 | 581 | ret = dsa_slave_resume(ds->ports[i].netdev); |
24462549 FF |
582 | if (ret) |
583 | return ret; | |
584 | } | |
585 | ||
586 | return 0; | |
587 | } | |
e506d405 | 588 | #endif |
24462549 | 589 | |
91da11f8 LB |
590 | /* platform driver init and cleanup *****************************************/ |
591 | static int dev_is_class(struct device *dev, void *class) | |
592 | { | |
593 | if (dev->class != NULL && !strcmp(dev->class->name, class)) | |
594 | return 1; | |
595 | ||
596 | return 0; | |
597 | } | |
598 | ||
599 | static struct device *dev_find_class(struct device *parent, char *class) | |
600 | { | |
601 | if (dev_is_class(parent, class)) { | |
602 | get_device(parent); | |
603 | return parent; | |
604 | } | |
605 | ||
606 | return device_find_child(parent, class, dev_is_class); | |
607 | } | |
608 | ||
b4d2394d | 609 | struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev) |
91da11f8 LB |
610 | { |
611 | struct device *d; | |
612 | ||
613 | d = dev_find_class(dev, "mdio_bus"); | |
614 | if (d != NULL) { | |
615 | struct mii_bus *bus; | |
616 | ||
617 | bus = to_mii_bus(d); | |
618 | put_device(d); | |
619 | ||
620 | return bus; | |
621 | } | |
622 | ||
623 | return NULL; | |
624 | } | |
b4d2394d | 625 | EXPORT_SYMBOL_GPL(dsa_host_dev_to_mii_bus); |
91da11f8 LB |
626 | |
627 | static struct net_device *dev_to_net_device(struct device *dev) | |
628 | { | |
629 | struct device *d; | |
630 | ||
631 | d = dev_find_class(dev, "net"); | |
632 | if (d != NULL) { | |
633 | struct net_device *nd; | |
634 | ||
635 | nd = to_net_dev(d); | |
636 | dev_hold(nd); | |
637 | put_device(d); | |
638 | ||
639 | return nd; | |
640 | } | |
641 | ||
642 | return NULL; | |
643 | } | |
644 | ||
5e95329b FF |
645 | #ifdef CONFIG_OF |
646 | static int dsa_of_setup_routing_table(struct dsa_platform_data *pd, | |
647 | struct dsa_chip_data *cd, | |
30303813 | 648 | int chip_index, int port_index, |
5e95329b FF |
649 | struct device_node *link) |
650 | { | |
5e95329b | 651 | const __be32 *reg; |
5e95329b FF |
652 | int link_sw_addr; |
653 | struct device_node *parent_sw; | |
654 | int len; | |
655 | ||
656 | parent_sw = of_get_parent(link); | |
657 | if (!parent_sw) | |
658 | return -EINVAL; | |
659 | ||
660 | reg = of_get_property(parent_sw, "reg", &len); | |
661 | if (!reg || (len != sizeof(*reg) * 2)) | |
662 | return -EINVAL; | |
663 | ||
30303813 PN |
664 | /* |
665 | * Get the destination switch number from the second field of its 'reg' | |
666 | * property, i.e. for "reg = <0x19 1>" sw_addr is '1'. | |
667 | */ | |
5e95329b FF |
668 | link_sw_addr = be32_to_cpup(reg + 1); |
669 | ||
670 | if (link_sw_addr >= pd->nr_chips) | |
671 | return -EINVAL; | |
672 | ||
30303813 | 673 | cd->rtable[link_sw_addr] = port_index; |
5e95329b FF |
674 | |
675 | return 0; | |
5e95329b FF |
676 | } |
677 | ||
1e72e6f8 AL |
678 | static int dsa_of_probe_links(struct dsa_platform_data *pd, |
679 | struct dsa_chip_data *cd, | |
680 | int chip_index, int port_index, | |
681 | struct device_node *port, | |
682 | const char *port_name) | |
683 | { | |
684 | struct device_node *link; | |
685 | int link_index; | |
686 | int ret; | |
687 | ||
688 | for (link_index = 0;; link_index++) { | |
689 | link = of_parse_phandle(port, "link", link_index); | |
690 | if (!link) | |
691 | break; | |
692 | ||
693 | if (!strcmp(port_name, "dsa") && pd->nr_chips > 1) { | |
694 | ret = dsa_of_setup_routing_table(pd, cd, chip_index, | |
695 | port_index, link); | |
696 | if (ret) | |
697 | return ret; | |
698 | } | |
699 | } | |
700 | return 0; | |
701 | } | |
702 | ||
21168245 FF |
703 | static void dsa_of_free_platform_data(struct dsa_platform_data *pd) |
704 | { | |
705 | int i; | |
706 | int port_index; | |
707 | ||
708 | for (i = 0; i < pd->nr_chips; i++) { | |
709 | port_index = 0; | |
5f64a7db | 710 | while (port_index < DSA_MAX_PORTS) { |
1f74714f | 711 | kfree(pd->chip[i].port_names[port_index]); |
5f64a7db FF |
712 | port_index++; |
713 | } | |
e496ae69 RK |
714 | |
715 | /* Drop our reference to the MDIO bus device */ | |
716 | if (pd->chip[i].host_dev) | |
717 | put_device(pd->chip[i].host_dev); | |
21168245 FF |
718 | } |
719 | kfree(pd->chip); | |
720 | } | |
721 | ||
f1a26a06 | 722 | static int dsa_of_probe(struct device *dev) |
5e95329b | 723 | { |
f1a26a06 | 724 | struct device_node *np = dev->of_node; |
1e72e6f8 | 725 | struct device_node *child, *mdio, *ethernet, *port; |
6bc6d0a8 | 726 | struct mii_bus *mdio_bus, *mdio_bus_switch; |
769a0202 | 727 | struct net_device *ethernet_dev; |
5e95329b FF |
728 | struct dsa_platform_data *pd; |
729 | struct dsa_chip_data *cd; | |
730 | const char *port_name; | |
731 | int chip_index, port_index; | |
732 | const unsigned int *sw_addr, *port_reg; | |
6793abb4 | 733 | u32 eeprom_len; |
21168245 | 734 | int ret; |
5e95329b FF |
735 | |
736 | mdio = of_parse_phandle(np, "dsa,mii-bus", 0); | |
737 | if (!mdio) | |
738 | return -EINVAL; | |
739 | ||
740 | mdio_bus = of_mdio_find_bus(mdio); | |
741 | if (!mdio_bus) | |
b324c07a | 742 | return -EPROBE_DEFER; |
5e95329b FF |
743 | |
744 | ethernet = of_parse_phandle(np, "dsa,ethernet", 0); | |
e496ae69 RK |
745 | if (!ethernet) { |
746 | ret = -EINVAL; | |
747 | goto out_put_mdio; | |
748 | } | |
5e95329b | 749 | |
769a0202 | 750 | ethernet_dev = of_find_net_device_by_node(ethernet); |
e496ae69 RK |
751 | if (!ethernet_dev) { |
752 | ret = -EPROBE_DEFER; | |
753 | goto out_put_mdio; | |
754 | } | |
5e95329b FF |
755 | |
756 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); | |
e496ae69 RK |
757 | if (!pd) { |
758 | ret = -ENOMEM; | |
9861f720 | 759 | goto out_put_ethernet; |
e496ae69 | 760 | } |
5e95329b | 761 | |
f1a26a06 | 762 | dev->platform_data = pd; |
769a0202 | 763 | pd->of_netdev = ethernet_dev; |
e04449fc | 764 | pd->nr_chips = of_get_available_child_count(np); |
5e95329b FF |
765 | if (pd->nr_chips > DSA_MAX_SWITCHES) |
766 | pd->nr_chips = DSA_MAX_SWITCHES; | |
767 | ||
6f2aed6a FF |
768 | pd->chip = kcalloc(pd->nr_chips, sizeof(struct dsa_chip_data), |
769 | GFP_KERNEL); | |
5e95329b FF |
770 | if (!pd->chip) { |
771 | ret = -ENOMEM; | |
772 | goto out_free; | |
773 | } | |
774 | ||
d1c0b471 | 775 | chip_index = -1; |
5e95329b | 776 | for_each_available_child_of_node(np, child) { |
d1c0b471 | 777 | chip_index++; |
5e95329b FF |
778 | cd = &pd->chip[chip_index]; |
779 | ||
fa981d9a | 780 | cd->of_node = child; |
e496ae69 RK |
781 | |
782 | /* When assigning the host device, increment its refcount */ | |
783 | cd->host_dev = get_device(&mdio_bus->dev); | |
5e95329b FF |
784 | |
785 | sw_addr = of_get_property(child, "reg", NULL); | |
786 | if (!sw_addr) | |
787 | continue; | |
788 | ||
789 | cd->sw_addr = be32_to_cpup(sw_addr); | |
c8cf89f7 | 790 | if (cd->sw_addr >= PHY_MAX_ADDR) |
5e95329b FF |
791 | continue; |
792 | ||
50d4964f | 793 | if (!of_property_read_u32(child, "eeprom-length", &eeprom_len)) |
6793abb4 GR |
794 | cd->eeprom_len = eeprom_len; |
795 | ||
6bc6d0a8 AL |
796 | mdio = of_parse_phandle(child, "mii-bus", 0); |
797 | if (mdio) { | |
798 | mdio_bus_switch = of_mdio_find_bus(mdio); | |
799 | if (!mdio_bus_switch) { | |
800 | ret = -EPROBE_DEFER; | |
801 | goto out_free_chip; | |
802 | } | |
e496ae69 RK |
803 | |
804 | /* Drop the mdio_bus device ref, replacing the host | |
805 | * device with the mdio_bus_switch device, keeping | |
806 | * the refcount from of_mdio_find_bus() above. | |
807 | */ | |
808 | put_device(cd->host_dev); | |
6bc6d0a8 AL |
809 | cd->host_dev = &mdio_bus_switch->dev; |
810 | } | |
811 | ||
5e95329b FF |
812 | for_each_available_child_of_node(child, port) { |
813 | port_reg = of_get_property(port, "reg", NULL); | |
814 | if (!port_reg) | |
815 | continue; | |
816 | ||
817 | port_index = be32_to_cpup(port_reg); | |
8f5063e9 FF |
818 | if (port_index >= DSA_MAX_PORTS) |
819 | break; | |
5e95329b FF |
820 | |
821 | port_name = of_get_property(port, "label", NULL); | |
822 | if (!port_name) | |
823 | continue; | |
824 | ||
bd47497a FF |
825 | cd->port_dn[port_index] = port; |
826 | ||
5e95329b FF |
827 | cd->port_names[port_index] = kstrdup(port_name, |
828 | GFP_KERNEL); | |
829 | if (!cd->port_names[port_index]) { | |
830 | ret = -ENOMEM; | |
831 | goto out_free_chip; | |
832 | } | |
833 | ||
1e72e6f8 AL |
834 | ret = dsa_of_probe_links(pd, cd, chip_index, |
835 | port_index, port, port_name); | |
836 | if (ret) | |
837 | goto out_free_chip; | |
5e95329b | 838 | |
5e95329b FF |
839 | } |
840 | } | |
841 | ||
e496ae69 RK |
842 | /* The individual chips hold their own refcount on the mdio bus, |
843 | * so drop ours */ | |
844 | put_device(&mdio_bus->dev); | |
845 | ||
5e95329b FF |
846 | return 0; |
847 | ||
848 | out_free_chip: | |
21168245 | 849 | dsa_of_free_platform_data(pd); |
5e95329b FF |
850 | out_free: |
851 | kfree(pd); | |
f1a26a06 | 852 | dev->platform_data = NULL; |
9861f720 RK |
853 | out_put_ethernet: |
854 | put_device(ðernet_dev->dev); | |
e496ae69 RK |
855 | out_put_mdio: |
856 | put_device(&mdio_bus->dev); | |
5e95329b FF |
857 | return ret; |
858 | } | |
859 | ||
f1a26a06 | 860 | static void dsa_of_remove(struct device *dev) |
5e95329b | 861 | { |
f1a26a06 | 862 | struct dsa_platform_data *pd = dev->platform_data; |
5e95329b | 863 | |
f1a26a06 | 864 | if (!dev->of_node) |
5e95329b FF |
865 | return; |
866 | ||
21168245 | 867 | dsa_of_free_platform_data(pd); |
9861f720 | 868 | put_device(&pd->of_netdev->dev); |
5e95329b FF |
869 | kfree(pd); |
870 | } | |
871 | #else | |
f1a26a06 | 872 | static inline int dsa_of_probe(struct device *dev) |
5e95329b FF |
873 | { |
874 | return 0; | |
875 | } | |
876 | ||
f1a26a06 | 877 | static inline void dsa_of_remove(struct device *dev) |
5e95329b FF |
878 | { |
879 | } | |
880 | #endif | |
881 | ||
4d7f3e75 NA |
882 | static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, |
883 | struct device *parent, struct dsa_platform_data *pd) | |
c86e59b9 FF |
884 | { |
885 | int i; | |
4d7f3e75 | 886 | unsigned configured = 0; |
c86e59b9 FF |
887 | |
888 | dst->pd = pd; | |
889 | dst->master_netdev = dev; | |
890 | dst->cpu_switch = -1; | |
891 | dst->cpu_port = -1; | |
892 | ||
893 | for (i = 0; i < pd->nr_chips; i++) { | |
894 | struct dsa_switch *ds; | |
895 | ||
896 | ds = dsa_switch_setup(dst, i, parent, pd->chip[i].host_dev); | |
897 | if (IS_ERR(ds)) { | |
898 | netdev_err(dev, "[%d]: couldn't create dsa switch instance (error %ld)\n", | |
899 | i, PTR_ERR(ds)); | |
900 | continue; | |
901 | } | |
902 | ||
903 | dst->ds[i] = ds; | |
4d7f3e75 NA |
904 | |
905 | ++configured; | |
c86e59b9 FF |
906 | } |
907 | ||
4d7f3e75 NA |
908 | /* |
909 | * If no switch was found, exit cleanly | |
910 | */ | |
911 | if (!configured) | |
912 | return -EPROBE_DEFER; | |
913 | ||
c86e59b9 FF |
914 | /* |
915 | * If we use a tagging format that doesn't have an ethertype | |
916 | * field, make sure that all packets from this point on get | |
917 | * sent to the tag format's receive function. | |
918 | */ | |
919 | wmb(); | |
920 | dev->dsa_ptr = (void *)dst; | |
921 | ||
4d7f3e75 | 922 | return 0; |
c86e59b9 FF |
923 | } |
924 | ||
91da11f8 LB |
925 | static int dsa_probe(struct platform_device *pdev) |
926 | { | |
91da11f8 LB |
927 | struct dsa_platform_data *pd = pdev->dev.platform_data; |
928 | struct net_device *dev; | |
e84665c9 | 929 | struct dsa_switch_tree *dst; |
c86e59b9 | 930 | int ret; |
91da11f8 | 931 | |
a2ae6007 JP |
932 | pr_notice_once("Distributed Switch Architecture driver version %s\n", |
933 | dsa_driver_version); | |
91da11f8 | 934 | |
5e95329b | 935 | if (pdev->dev.of_node) { |
f1a26a06 | 936 | ret = dsa_of_probe(&pdev->dev); |
5e95329b FF |
937 | if (ret) |
938 | return ret; | |
939 | ||
940 | pd = pdev->dev.platform_data; | |
941 | } | |
942 | ||
769a0202 | 943 | if (pd == NULL || (pd->netdev == NULL && pd->of_netdev == NULL)) |
91da11f8 LB |
944 | return -EINVAL; |
945 | ||
769a0202 FF |
946 | if (pd->of_netdev) { |
947 | dev = pd->of_netdev; | |
948 | dev_hold(dev); | |
949 | } else { | |
950 | dev = dev_to_net_device(pd->netdev); | |
951 | } | |
5e95329b | 952 | if (dev == NULL) { |
b324c07a | 953 | ret = -EPROBE_DEFER; |
5e95329b FF |
954 | goto out; |
955 | } | |
91da11f8 LB |
956 | |
957 | if (dev->dsa_ptr != NULL) { | |
958 | dev_put(dev); | |
5e95329b FF |
959 | ret = -EEXIST; |
960 | goto out; | |
91da11f8 LB |
961 | } |
962 | ||
d4ac35d6 | 963 | dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL); |
e84665c9 | 964 | if (dst == NULL) { |
91da11f8 | 965 | dev_put(dev); |
5e95329b FF |
966 | ret = -ENOMEM; |
967 | goto out; | |
91da11f8 LB |
968 | } |
969 | ||
e84665c9 LB |
970 | platform_set_drvdata(pdev, dst); |
971 | ||
4d7f3e75 | 972 | ret = dsa_setup_dst(dst, dev, &pdev->dev, pd); |
679fb46c NA |
973 | if (ret) { |
974 | dev_put(dev); | |
4d7f3e75 | 975 | goto out; |
679fb46c | 976 | } |
91da11f8 LB |
977 | |
978 | return 0; | |
5e95329b FF |
979 | |
980 | out: | |
f1a26a06 | 981 | dsa_of_remove(&pdev->dev); |
5e95329b FF |
982 | |
983 | return ret; | |
91da11f8 LB |
984 | } |
985 | ||
c86e59b9 | 986 | static void dsa_remove_dst(struct dsa_switch_tree *dst) |
91da11f8 | 987 | { |
e84665c9 | 988 | int i; |
91da11f8 | 989 | |
04761890 NA |
990 | dst->master_netdev->dsa_ptr = NULL; |
991 | ||
992 | /* If we used a tagging format that doesn't have an ethertype | |
993 | * field, make sure that all packets from this point get sent | |
994 | * without the tag and go through the regular receive path. | |
995 | */ | |
996 | wmb(); | |
997 | ||
e84665c9 LB |
998 | for (i = 0; i < dst->pd->nr_chips; i++) { |
999 | struct dsa_switch *ds = dst->ds[i]; | |
1000 | ||
d4ac35d6 | 1001 | if (ds) |
e84665c9 LB |
1002 | dsa_switch_destroy(ds); |
1003 | } | |
679fb46c | 1004 | |
0c73c523 FF |
1005 | dsa_cpu_port_ethtool_restore(dst->ds[0]); |
1006 | ||
679fb46c | 1007 | dev_put(dst->master_netdev); |
c86e59b9 FF |
1008 | } |
1009 | ||
1010 | static int dsa_remove(struct platform_device *pdev) | |
1011 | { | |
1012 | struct dsa_switch_tree *dst = platform_get_drvdata(pdev); | |
91da11f8 | 1013 | |
c86e59b9 | 1014 | dsa_remove_dst(dst); |
f1a26a06 | 1015 | dsa_of_remove(&pdev->dev); |
5e95329b | 1016 | |
91da11f8 LB |
1017 | return 0; |
1018 | } | |
1019 | ||
1020 | static void dsa_shutdown(struct platform_device *pdev) | |
1021 | { | |
1022 | } | |
1023 | ||
3e8a72d1 FF |
1024 | static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev, |
1025 | struct packet_type *pt, struct net_device *orig_dev) | |
1026 | { | |
1027 | struct dsa_switch_tree *dst = dev->dsa_ptr; | |
1028 | ||
1029 | if (unlikely(dst == NULL)) { | |
1030 | kfree_skb(skb); | |
1031 | return 0; | |
1032 | } | |
1033 | ||
5075314e | 1034 | return dst->rcv(skb, dev, pt, orig_dev); |
3e8a72d1 FF |
1035 | } |
1036 | ||
61b7363f | 1037 | static struct packet_type dsa_pack_type __read_mostly = { |
3e8a72d1 FF |
1038 | .type = cpu_to_be16(ETH_P_XDSA), |
1039 | .func = dsa_switch_rcv, | |
1040 | }; | |
1041 | ||
b73adef6 FF |
1042 | static struct notifier_block dsa_netdevice_nb __read_mostly = { |
1043 | .notifier_call = dsa_slave_netdevice_event, | |
1044 | }; | |
1045 | ||
24462549 FF |
1046 | #ifdef CONFIG_PM_SLEEP |
1047 | static int dsa_suspend(struct device *d) | |
1048 | { | |
1049 | struct platform_device *pdev = to_platform_device(d); | |
1050 | struct dsa_switch_tree *dst = platform_get_drvdata(pdev); | |
1051 | int i, ret = 0; | |
1052 | ||
1053 | for (i = 0; i < dst->pd->nr_chips; i++) { | |
1054 | struct dsa_switch *ds = dst->ds[i]; | |
1055 | ||
1056 | if (ds != NULL) | |
1057 | ret = dsa_switch_suspend(ds); | |
1058 | } | |
1059 | ||
1060 | return ret; | |
1061 | } | |
1062 | ||
1063 | static int dsa_resume(struct device *d) | |
1064 | { | |
1065 | struct platform_device *pdev = to_platform_device(d); | |
1066 | struct dsa_switch_tree *dst = platform_get_drvdata(pdev); | |
1067 | int i, ret = 0; | |
1068 | ||
1069 | for (i = 0; i < dst->pd->nr_chips; i++) { | |
1070 | struct dsa_switch *ds = dst->ds[i]; | |
1071 | ||
1072 | if (ds != NULL) | |
1073 | ret = dsa_switch_resume(ds); | |
1074 | } | |
1075 | ||
1076 | return ret; | |
1077 | } | |
1078 | #endif | |
1079 | ||
1080 | static SIMPLE_DEV_PM_OPS(dsa_pm_ops, dsa_suspend, dsa_resume); | |
1081 | ||
5e95329b | 1082 | static const struct of_device_id dsa_of_match_table[] = { |
246d7f77 | 1083 | { .compatible = "brcm,bcm7445-switch-v4.0" }, |
5e95329b FF |
1084 | { .compatible = "marvell,dsa", }, |
1085 | {} | |
1086 | }; | |
1087 | MODULE_DEVICE_TABLE(of, dsa_of_match_table); | |
1088 | ||
91da11f8 LB |
1089 | static struct platform_driver dsa_driver = { |
1090 | .probe = dsa_probe, | |
1091 | .remove = dsa_remove, | |
1092 | .shutdown = dsa_shutdown, | |
1093 | .driver = { | |
1094 | .name = "dsa", | |
5e95329b | 1095 | .of_match_table = dsa_of_match_table, |
24462549 | 1096 | .pm = &dsa_pm_ops, |
91da11f8 LB |
1097 | }, |
1098 | }; | |
1099 | ||
1100 | static int __init dsa_init_module(void) | |
1101 | { | |
7df899c3 BH |
1102 | int rc; |
1103 | ||
b73adef6 FF |
1104 | register_netdevice_notifier(&dsa_netdevice_nb); |
1105 | ||
7df899c3 BH |
1106 | rc = platform_driver_register(&dsa_driver); |
1107 | if (rc) | |
1108 | return rc; | |
1109 | ||
3e8a72d1 FF |
1110 | dev_add_pack(&dsa_pack_type); |
1111 | ||
7df899c3 | 1112 | return 0; |
91da11f8 LB |
1113 | } |
1114 | module_init(dsa_init_module); | |
1115 | ||
1116 | static void __exit dsa_cleanup_module(void) | |
1117 | { | |
b73adef6 | 1118 | unregister_netdevice_notifier(&dsa_netdevice_nb); |
3e8a72d1 | 1119 | dev_remove_pack(&dsa_pack_type); |
91da11f8 LB |
1120 | platform_driver_unregister(&dsa_driver); |
1121 | } | |
1122 | module_exit(dsa_cleanup_module); | |
1123 | ||
577d6a7c | 1124 | MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>"); |
91da11f8 LB |
1125 | MODULE_DESCRIPTION("Driver for Distributed Switch Architecture switch chips"); |
1126 | MODULE_LICENSE("GPL"); | |
1127 | MODULE_ALIAS("platform:dsa"); |