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, | |
cafdc45c JC |
56 | #endif |
57 | #ifdef CONFIG_NET_DSA_TAG_QCA | |
58 | [DSA_TAG_PROTO_QCA] = &qca_netdev_ops, | |
39a7f2a4 AL |
59 | #endif |
60 | [DSA_TAG_PROTO_NONE] = &none_ops, | |
61 | }; | |
91da11f8 LB |
62 | |
63 | /* switch driver registration ***********************************************/ | |
64 | static DEFINE_MUTEX(dsa_switch_drivers_mutex); | |
65 | static LIST_HEAD(dsa_switch_drivers); | |
66 | ||
9d490b4e | 67 | void register_switch_driver(struct dsa_switch_ops *ops) |
91da11f8 LB |
68 | { |
69 | mutex_lock(&dsa_switch_drivers_mutex); | |
9d490b4e | 70 | list_add_tail(&ops->list, &dsa_switch_drivers); |
91da11f8 LB |
71 | mutex_unlock(&dsa_switch_drivers_mutex); |
72 | } | |
ad293b8a | 73 | EXPORT_SYMBOL_GPL(register_switch_driver); |
91da11f8 | 74 | |
9d490b4e | 75 | void unregister_switch_driver(struct dsa_switch_ops *ops) |
91da11f8 LB |
76 | { |
77 | mutex_lock(&dsa_switch_drivers_mutex); | |
9d490b4e | 78 | list_del_init(&ops->list); |
91da11f8 LB |
79 | mutex_unlock(&dsa_switch_drivers_mutex); |
80 | } | |
ad293b8a | 81 | EXPORT_SYMBOL_GPL(unregister_switch_driver); |
91da11f8 | 82 | |
9d490b4e | 83 | static struct dsa_switch_ops * |
bbb8d793 | 84 | dsa_switch_probe(struct device *parent, struct device *host_dev, int sw_addr, |
0209d144 | 85 | const char **_name, void **priv) |
91da11f8 | 86 | { |
9d490b4e | 87 | struct dsa_switch_ops *ret; |
91da11f8 | 88 | struct list_head *list; |
0209d144 | 89 | const char *name; |
91da11f8 LB |
90 | |
91 | ret = NULL; | |
92 | name = NULL; | |
93 | ||
94 | mutex_lock(&dsa_switch_drivers_mutex); | |
95 | list_for_each(list, &dsa_switch_drivers) { | |
9d490b4e | 96 | struct dsa_switch_ops *ops; |
91da11f8 | 97 | |
9d490b4e | 98 | ops = list_entry(list, struct dsa_switch_ops, list); |
91da11f8 | 99 | |
9d490b4e | 100 | name = ops->probe(parent, host_dev, sw_addr, priv); |
91da11f8 | 101 | if (name != NULL) { |
9d490b4e | 102 | ret = ops; |
91da11f8 LB |
103 | break; |
104 | } | |
105 | } | |
106 | mutex_unlock(&dsa_switch_drivers_mutex); | |
107 | ||
108 | *_name = name; | |
109 | ||
110 | return ret; | |
111 | } | |
112 | ||
51579c3f GR |
113 | /* hwmon support ************************************************************/ |
114 | ||
115 | #ifdef CONFIG_NET_DSA_HWMON | |
116 | ||
117 | static ssize_t temp1_input_show(struct device *dev, | |
118 | struct device_attribute *attr, char *buf) | |
119 | { | |
120 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
121 | int temp, ret; | |
122 | ||
9d490b4e | 123 | ret = ds->ops->get_temp(ds, &temp); |
51579c3f GR |
124 | if (ret < 0) |
125 | return ret; | |
126 | ||
127 | return sprintf(buf, "%d\n", temp * 1000); | |
128 | } | |
129 | static DEVICE_ATTR_RO(temp1_input); | |
130 | ||
131 | static ssize_t temp1_max_show(struct device *dev, | |
132 | struct device_attribute *attr, char *buf) | |
133 | { | |
134 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
135 | int temp, ret; | |
136 | ||
9d490b4e | 137 | ret = ds->ops->get_temp_limit(ds, &temp); |
51579c3f GR |
138 | if (ret < 0) |
139 | return ret; | |
140 | ||
141 | return sprintf(buf, "%d\n", temp * 1000); | |
142 | } | |
143 | ||
144 | static ssize_t temp1_max_store(struct device *dev, | |
145 | struct device_attribute *attr, const char *buf, | |
146 | size_t count) | |
147 | { | |
148 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
149 | int temp, ret; | |
150 | ||
151 | ret = kstrtoint(buf, 0, &temp); | |
152 | if (ret < 0) | |
153 | return ret; | |
154 | ||
9d490b4e | 155 | ret = ds->ops->set_temp_limit(ds, DIV_ROUND_CLOSEST(temp, 1000)); |
51579c3f GR |
156 | if (ret < 0) |
157 | return ret; | |
158 | ||
159 | return count; | |
160 | } | |
e3122b7f | 161 | static DEVICE_ATTR_RW(temp1_max); |
51579c3f GR |
162 | |
163 | static ssize_t temp1_max_alarm_show(struct device *dev, | |
164 | struct device_attribute *attr, char *buf) | |
165 | { | |
166 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
167 | bool alarm; | |
168 | int ret; | |
169 | ||
9d490b4e | 170 | ret = ds->ops->get_temp_alarm(ds, &alarm); |
51579c3f GR |
171 | if (ret < 0) |
172 | return ret; | |
173 | ||
174 | return sprintf(buf, "%d\n", alarm); | |
175 | } | |
176 | static DEVICE_ATTR_RO(temp1_max_alarm); | |
177 | ||
178 | static struct attribute *dsa_hwmon_attrs[] = { | |
179 | &dev_attr_temp1_input.attr, /* 0 */ | |
180 | &dev_attr_temp1_max.attr, /* 1 */ | |
181 | &dev_attr_temp1_max_alarm.attr, /* 2 */ | |
182 | NULL | |
183 | }; | |
184 | ||
185 | static umode_t dsa_hwmon_attrs_visible(struct kobject *kobj, | |
186 | struct attribute *attr, int index) | |
187 | { | |
188 | struct device *dev = container_of(kobj, struct device, kobj); | |
189 | struct dsa_switch *ds = dev_get_drvdata(dev); | |
9d490b4e | 190 | struct dsa_switch_ops *ops = ds->ops; |
51579c3f GR |
191 | umode_t mode = attr->mode; |
192 | ||
193 | if (index == 1) { | |
9d490b4e | 194 | if (!ops->get_temp_limit) |
51579c3f | 195 | mode = 0; |
9d490b4e | 196 | else if (!ops->set_temp_limit) |
e3122b7f | 197 | mode &= ~S_IWUSR; |
9d490b4e | 198 | } else if (index == 2 && !ops->get_temp_alarm) { |
51579c3f GR |
199 | mode = 0; |
200 | } | |
201 | return mode; | |
202 | } | |
203 | ||
204 | static const struct attribute_group dsa_hwmon_group = { | |
205 | .attrs = dsa_hwmon_attrs, | |
206 | .is_visible = dsa_hwmon_attrs_visible, | |
207 | }; | |
208 | __ATTRIBUTE_GROUPS(dsa_hwmon); | |
209 | ||
210 | #endif /* CONFIG_NET_DSA_HWMON */ | |
91da11f8 LB |
211 | |
212 | /* basic switch operations **************************************************/ | |
9b8e895c AL |
213 | int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev, |
214 | struct device_node *port_dn, int port) | |
39b0c705 | 215 | { |
39b0c705 | 216 | struct phy_device *phydev; |
9b8e895c AL |
217 | int ret, mode; |
218 | ||
219 | if (of_phy_is_fixed_link(port_dn)) { | |
220 | ret = of_phy_register_fixed_link(port_dn); | |
221 | if (ret) { | |
222 | dev_err(dev, "failed to register fixed PHY\n"); | |
223 | return ret; | |
224 | } | |
225 | phydev = of_phy_find_device(port_dn); | |
226 | ||
227 | mode = of_get_phy_mode(port_dn); | |
228 | if (mode < 0) | |
229 | mode = PHY_INTERFACE_MODE_NA; | |
230 | phydev->interface = mode; | |
231 | ||
232 | genphy_config_init(phydev); | |
233 | genphy_read_status(phydev); | |
9d490b4e VD |
234 | if (ds->ops->adjust_link) |
235 | ds->ops->adjust_link(ds, port, phydev); | |
9b8e895c AL |
236 | } |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | static int dsa_cpu_dsa_setups(struct dsa_switch *ds, struct device *dev) | |
242 | { | |
243 | struct device_node *port_dn; | |
244 | int ret, port; | |
39b0c705 AL |
245 | |
246 | for (port = 0; port < DSA_MAX_PORTS; port++) { | |
247 | if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) | |
248 | continue; | |
249 | ||
189b0d93 | 250 | port_dn = ds->ports[port].dn; |
9b8e895c AL |
251 | ret = dsa_cpu_dsa_setup(ds, dev, port_dn, port); |
252 | if (ret) | |
253 | return ret; | |
39b0c705 AL |
254 | } |
255 | return 0; | |
256 | } | |
257 | ||
39a7f2a4 AL |
258 | const struct dsa_device_ops *dsa_resolve_tag_protocol(int tag_protocol) |
259 | { | |
260 | const struct dsa_device_ops *ops; | |
261 | ||
262 | if (tag_protocol >= DSA_TAG_LAST) | |
263 | return ERR_PTR(-EINVAL); | |
264 | ops = dsa_device_ops[tag_protocol]; | |
265 | ||
266 | if (!ops) | |
267 | return ERR_PTR(-ENOPROTOOPT); | |
268 | ||
269 | return ops; | |
270 | } | |
271 | ||
0c73c523 FF |
272 | int dsa_cpu_port_ethtool_setup(struct dsa_switch *ds) |
273 | { | |
274 | struct net_device *master; | |
275 | struct ethtool_ops *cpu_ops; | |
276 | ||
277 | master = ds->dst->master_netdev; | |
278 | if (ds->master_netdev) | |
279 | master = ds->master_netdev; | |
280 | ||
281 | cpu_ops = devm_kzalloc(ds->dev, sizeof(*cpu_ops), GFP_KERNEL); | |
282 | if (!cpu_ops) | |
283 | return -ENOMEM; | |
284 | ||
285 | memcpy(&ds->dst->master_ethtool_ops, master->ethtool_ops, | |
286 | sizeof(struct ethtool_ops)); | |
287 | ds->dst->master_orig_ethtool_ops = master->ethtool_ops; | |
288 | memcpy(cpu_ops, &ds->dst->master_ethtool_ops, | |
289 | sizeof(struct ethtool_ops)); | |
290 | dsa_cpu_port_ethtool_init(cpu_ops); | |
291 | master->ethtool_ops = cpu_ops; | |
292 | ||
293 | return 0; | |
294 | } | |
295 | ||
296 | void dsa_cpu_port_ethtool_restore(struct dsa_switch *ds) | |
297 | { | |
298 | struct net_device *master; | |
299 | ||
300 | master = ds->dst->master_netdev; | |
301 | if (ds->master_netdev) | |
302 | master = ds->master_netdev; | |
303 | ||
304 | master->ethtool_ops = ds->dst->master_orig_ethtool_ops; | |
305 | } | |
306 | ||
df197195 | 307 | static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent) |
91da11f8 | 308 | { |
9d490b4e | 309 | struct dsa_switch_ops *ops = ds->ops; |
df197195 | 310 | struct dsa_switch_tree *dst = ds->dst; |
ff04955c | 311 | struct dsa_chip_data *cd = ds->cd; |
f9bf5a2c | 312 | bool valid_name_found = false; |
df197195 FF |
313 | int index = ds->index; |
314 | int i, ret; | |
91da11f8 LB |
315 | |
316 | /* | |
317 | * Validate supplied switch configuration. | |
318 | */ | |
91da11f8 LB |
319 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
320 | char *name; | |
321 | ||
ff04955c | 322 | name = cd->port_names[i]; |
91da11f8 LB |
323 | if (name == NULL) |
324 | continue; | |
325 | ||
326 | if (!strcmp(name, "cpu")) { | |
e84665c9 | 327 | if (dst->cpu_switch != -1) { |
a2ae6007 JP |
328 | netdev_err(dst->master_netdev, |
329 | "multiple cpu ports?!\n"); | |
91da11f8 LB |
330 | ret = -EINVAL; |
331 | goto out; | |
332 | } | |
e84665c9 LB |
333 | dst->cpu_switch = index; |
334 | dst->cpu_port = i; | |
83c0afae | 335 | ds->cpu_port_mask |= 1 << i; |
e84665c9 LB |
336 | } else if (!strcmp(name, "dsa")) { |
337 | ds->dsa_port_mask |= 1 << i; | |
91da11f8 | 338 | } else { |
74c3e2a5 | 339 | ds->enabled_port_mask |= 1 << i; |
91da11f8 | 340 | } |
f9bf5a2c | 341 | valid_name_found = true; |
91da11f8 LB |
342 | } |
343 | ||
f9bf5a2c FF |
344 | if (!valid_name_found && i == DSA_MAX_PORTS) { |
345 | ret = -EINVAL; | |
346 | goto out; | |
347 | } | |
91da11f8 | 348 | |
0d8bcdd3 FF |
349 | /* Make the built-in MII bus mask match the number of ports, |
350 | * switch drivers can override this later | |
351 | */ | |
74c3e2a5 | 352 | ds->phys_mii_mask = ds->enabled_port_mask; |
0d8bcdd3 | 353 | |
91da11f8 | 354 | /* |
e84665c9 LB |
355 | * If the CPU connects to this switch, set the switch tree |
356 | * tagging protocol to the preferred tagging format of this | |
357 | * switch. | |
91da11f8 | 358 | */ |
5075314e | 359 | if (dst->cpu_switch == index) { |
7b314362 AL |
360 | enum dsa_tag_protocol tag_protocol; |
361 | ||
9d490b4e | 362 | tag_protocol = ops->get_tag_protocol(ds); |
7b314362 | 363 | dst->tag_ops = dsa_resolve_tag_protocol(tag_protocol); |
39a7f2a4 AL |
364 | if (IS_ERR(dst->tag_ops)) { |
365 | ret = PTR_ERR(dst->tag_ops); | |
ae439286 | 366 | goto out; |
5075314e | 367 | } |
91da11f8 | 368 | |
39a7f2a4 | 369 | dst->rcv = dst->tag_ops->rcv; |
5075314e | 370 | } |
91da11f8 | 371 | |
66472fc0 AL |
372 | memcpy(ds->rtable, cd->rtable, sizeof(ds->rtable)); |
373 | ||
91da11f8 LB |
374 | /* |
375 | * Do basic register setup. | |
376 | */ | |
9d490b4e | 377 | ret = ops->setup(ds); |
91da11f8 LB |
378 | if (ret < 0) |
379 | goto out; | |
380 | ||
092183df JC |
381 | if (ops->set_addr) { |
382 | ret = ops->set_addr(ds, dst->master_netdev->dev_addr); | |
383 | if (ret < 0) | |
384 | goto out; | |
385 | } | |
91da11f8 | 386 | |
9d490b4e | 387 | if (!ds->slave_mii_bus && ops->phy_read) { |
e755e49e AL |
388 | ds->slave_mii_bus = devm_mdiobus_alloc(parent); |
389 | if (!ds->slave_mii_bus) { | |
390 | ret = -ENOMEM; | |
391 | goto out; | |
392 | } | |
393 | dsa_slave_mii_bus_init(ds); | |
91da11f8 | 394 | |
e755e49e AL |
395 | ret = mdiobus_register(ds->slave_mii_bus); |
396 | if (ret < 0) | |
397 | goto out; | |
398 | } | |
91da11f8 LB |
399 | |
400 | /* | |
401 | * Create network devices for physical switch ports. | |
402 | */ | |
91da11f8 | 403 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
189b0d93 AL |
404 | ds->ports[i].dn = cd->port_dn[i]; |
405 | ||
74c3e2a5 | 406 | if (!(ds->enabled_port_mask & (1 << i))) |
91da11f8 LB |
407 | continue; |
408 | ||
ff04955c | 409 | ret = dsa_slave_create(ds, parent, i, cd->port_names[i]); |
d87d6f44 | 410 | if (ret < 0) { |
d25b8e74 | 411 | netdev_err(dst->master_netdev, "[%d]: can't create dsa slave device for port %d(%s): %d\n", |
ff04955c | 412 | index, i, cd->port_names[i], ret); |
d87d6f44 | 413 | ret = 0; |
91da11f8 | 414 | } |
91da11f8 LB |
415 | } |
416 | ||
39b0c705 | 417 | /* Perform configuration of the CPU and DSA ports */ |
9b8e895c | 418 | ret = dsa_cpu_dsa_setups(ds, parent); |
39b0c705 AL |
419 | if (ret < 0) { |
420 | netdev_err(dst->master_netdev, "[%d] : can't configure CPU and DSA ports\n", | |
421 | index); | |
422 | ret = 0; | |
423 | } | |
424 | ||
0c73c523 FF |
425 | ret = dsa_cpu_port_ethtool_setup(ds); |
426 | if (ret) | |
427 | return ret; | |
428 | ||
51579c3f GR |
429 | #ifdef CONFIG_NET_DSA_HWMON |
430 | /* If the switch provides a temperature sensor, | |
431 | * register with hardware monitoring subsystem. | |
432 | * Treat registration error as non-fatal and ignore it. | |
433 | */ | |
9d490b4e | 434 | if (ops->get_temp) { |
51579c3f GR |
435 | const char *netname = netdev_name(dst->master_netdev); |
436 | char hname[IFNAMSIZ + 1]; | |
437 | int i, j; | |
438 | ||
439 | /* Create valid hwmon 'name' attribute */ | |
440 | for (i = j = 0; i < IFNAMSIZ && netname[i]; i++) { | |
441 | if (isalnum(netname[i])) | |
442 | hname[j++] = netname[i]; | |
443 | } | |
444 | hname[j] = '\0'; | |
445 | scnprintf(ds->hwmon_name, sizeof(ds->hwmon_name), "%s_dsa%d", | |
446 | hname, index); | |
447 | ds->hwmon_dev = hwmon_device_register_with_groups(NULL, | |
448 | ds->hwmon_name, ds, dsa_hwmon_groups); | |
449 | if (IS_ERR(ds->hwmon_dev)) | |
450 | ds->hwmon_dev = NULL; | |
451 | } | |
452 | #endif /* CONFIG_NET_DSA_HWMON */ | |
453 | ||
df197195 | 454 | return ret; |
91da11f8 | 455 | |
91da11f8 | 456 | out: |
df197195 FF |
457 | return ret; |
458 | } | |
459 | ||
460 | static struct dsa_switch * | |
461 | dsa_switch_setup(struct dsa_switch_tree *dst, int index, | |
462 | struct device *parent, struct device *host_dev) | |
463 | { | |
ff04955c | 464 | struct dsa_chip_data *cd = dst->pd->chip + index; |
9d490b4e | 465 | struct dsa_switch_ops *ops; |
df197195 FF |
466 | struct dsa_switch *ds; |
467 | int ret; | |
0209d144 | 468 | const char *name; |
7543a6d5 | 469 | void *priv; |
df197195 FF |
470 | |
471 | /* | |
472 | * Probe for switch model. | |
473 | */ | |
9d490b4e VD |
474 | ops = dsa_switch_probe(parent, host_dev, cd->sw_addr, &name, &priv); |
475 | if (!ops) { | |
df197195 FF |
476 | netdev_err(dst->master_netdev, "[%d]: could not detect attached switch\n", |
477 | index); | |
478 | return ERR_PTR(-EINVAL); | |
479 | } | |
480 | netdev_info(dst->master_netdev, "[%d]: detected a %s switch\n", | |
481 | index, name); | |
482 | ||
483 | ||
484 | /* | |
485 | * Allocate and initialise switch state. | |
486 | */ | |
5feebd0a | 487 | ds = devm_kzalloc(parent, sizeof(*ds), GFP_KERNEL); |
df197195 | 488 | if (ds == NULL) |
24595346 | 489 | return ERR_PTR(-ENOMEM); |
df197195 FF |
490 | |
491 | ds->dst = dst; | |
492 | ds->index = index; | |
ff04955c | 493 | ds->cd = cd; |
9d490b4e | 494 | ds->ops = ops; |
7543a6d5 | 495 | ds->priv = priv; |
c33063d6 | 496 | ds->dev = parent; |
df197195 FF |
497 | |
498 | ret = dsa_switch_setup_one(ds, parent); | |
499 | if (ret) | |
24595346 | 500 | return ERR_PTR(ret); |
df197195 FF |
501 | |
502 | return ds; | |
91da11f8 LB |
503 | } |
504 | ||
9b8e895c | 505 | void dsa_cpu_dsa_destroy(struct device_node *port_dn) |
91da11f8 | 506 | { |
cbc5d90b | 507 | struct phy_device *phydev; |
9b8e895c AL |
508 | |
509 | if (of_phy_is_fixed_link(port_dn)) { | |
510 | phydev = of_phy_find_device(port_dn); | |
511 | if (phydev) { | |
512 | phy_device_free(phydev); | |
513 | fixed_phy_unregister(phydev); | |
514 | } | |
515 | } | |
516 | } | |
517 | ||
518 | static void dsa_switch_destroy(struct dsa_switch *ds) | |
519 | { | |
cbc5d90b NA |
520 | int port; |
521 | ||
51579c3f GR |
522 | #ifdef CONFIG_NET_DSA_HWMON |
523 | if (ds->hwmon_dev) | |
524 | hwmon_device_unregister(ds->hwmon_dev); | |
525 | #endif | |
cbc5d90b | 526 | |
3a44514f AL |
527 | /* Destroy network devices for physical switch ports. */ |
528 | for (port = 0; port < DSA_MAX_PORTS; port++) { | |
74c3e2a5 | 529 | if (!(ds->enabled_port_mask & (1 << port))) |
3a44514f AL |
530 | continue; |
531 | ||
c8b09808 | 532 | if (!ds->ports[port].netdev) |
3a44514f AL |
533 | continue; |
534 | ||
c8b09808 | 535 | dsa_slave_destroy(ds->ports[port].netdev); |
3a44514f AL |
536 | } |
537 | ||
9b8e895c | 538 | /* Disable configuration of the CPU and DSA ports */ |
cbc5d90b | 539 | for (port = 0; port < DSA_MAX_PORTS; port++) { |
9b8e895c AL |
540 | if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) |
541 | continue; | |
542 | dsa_cpu_dsa_destroy(ds->ports[port].dn); | |
83c0afae AL |
543 | |
544 | /* Clearing a bit which is not set does no harm */ | |
545 | ds->cpu_port_mask |= ~(1 << port); | |
546 | ds->dsa_port_mask |= ~(1 << port); | |
cbc5d90b NA |
547 | } |
548 | ||
9d490b4e | 549 | if (ds->slave_mii_bus && ds->ops->phy_read) |
e755e49e | 550 | mdiobus_unregister(ds->slave_mii_bus); |
91da11f8 LB |
551 | } |
552 | ||
e506d405 | 553 | #ifdef CONFIG_PM_SLEEP |
ea825e70 | 554 | int dsa_switch_suspend(struct dsa_switch *ds) |
24462549 FF |
555 | { |
556 | int i, ret = 0; | |
557 | ||
558 | /* Suspend slave network devices */ | |
559 | for (i = 0; i < DSA_MAX_PORTS; i++) { | |
d79d2107 | 560 | if (!dsa_is_port_initialized(ds, i)) |
24462549 FF |
561 | continue; |
562 | ||
c8b09808 | 563 | ret = dsa_slave_suspend(ds->ports[i].netdev); |
24462549 FF |
564 | if (ret) |
565 | return ret; | |
566 | } | |
567 | ||
9d490b4e VD |
568 | if (ds->ops->suspend) |
569 | ret = ds->ops->suspend(ds); | |
24462549 FF |
570 | |
571 | return ret; | |
572 | } | |
ea825e70 | 573 | EXPORT_SYMBOL_GPL(dsa_switch_suspend); |
24462549 | 574 | |
ea825e70 | 575 | int dsa_switch_resume(struct dsa_switch *ds) |
24462549 FF |
576 | { |
577 | int i, ret = 0; | |
578 | ||
9d490b4e VD |
579 | if (ds->ops->resume) |
580 | ret = ds->ops->resume(ds); | |
24462549 FF |
581 | |
582 | if (ret) | |
583 | return ret; | |
584 | ||
585 | /* Resume slave network devices */ | |
586 | for (i = 0; i < DSA_MAX_PORTS; i++) { | |
d79d2107 | 587 | if (!dsa_is_port_initialized(ds, i)) |
24462549 FF |
588 | continue; |
589 | ||
c8b09808 | 590 | ret = dsa_slave_resume(ds->ports[i].netdev); |
24462549 FF |
591 | if (ret) |
592 | return ret; | |
593 | } | |
594 | ||
595 | return 0; | |
596 | } | |
ea825e70 | 597 | EXPORT_SYMBOL_GPL(dsa_switch_resume); |
e506d405 | 598 | #endif |
24462549 | 599 | |
91da11f8 LB |
600 | /* platform driver init and cleanup *****************************************/ |
601 | static int dev_is_class(struct device *dev, void *class) | |
602 | { | |
603 | if (dev->class != NULL && !strcmp(dev->class->name, class)) | |
604 | return 1; | |
605 | ||
606 | return 0; | |
607 | } | |
608 | ||
609 | static struct device *dev_find_class(struct device *parent, char *class) | |
610 | { | |
611 | if (dev_is_class(parent, class)) { | |
612 | get_device(parent); | |
613 | return parent; | |
614 | } | |
615 | ||
616 | return device_find_child(parent, class, dev_is_class); | |
617 | } | |
618 | ||
b4d2394d | 619 | struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev) |
91da11f8 LB |
620 | { |
621 | struct device *d; | |
622 | ||
623 | d = dev_find_class(dev, "mdio_bus"); | |
624 | if (d != NULL) { | |
625 | struct mii_bus *bus; | |
626 | ||
627 | bus = to_mii_bus(d); | |
628 | put_device(d); | |
629 | ||
630 | return bus; | |
631 | } | |
632 | ||
633 | return NULL; | |
634 | } | |
b4d2394d | 635 | EXPORT_SYMBOL_GPL(dsa_host_dev_to_mii_bus); |
91da11f8 LB |
636 | |
637 | static struct net_device *dev_to_net_device(struct device *dev) | |
638 | { | |
639 | struct device *d; | |
640 | ||
641 | d = dev_find_class(dev, "net"); | |
642 | if (d != NULL) { | |
643 | struct net_device *nd; | |
644 | ||
645 | nd = to_net_dev(d); | |
646 | dev_hold(nd); | |
647 | put_device(d); | |
648 | ||
649 | return nd; | |
650 | } | |
651 | ||
652 | return NULL; | |
653 | } | |
654 | ||
5e95329b FF |
655 | #ifdef CONFIG_OF |
656 | static int dsa_of_setup_routing_table(struct dsa_platform_data *pd, | |
657 | struct dsa_chip_data *cd, | |
30303813 | 658 | int chip_index, int port_index, |
5e95329b FF |
659 | struct device_node *link) |
660 | { | |
5e95329b | 661 | const __be32 *reg; |
5e95329b FF |
662 | int link_sw_addr; |
663 | struct device_node *parent_sw; | |
664 | int len; | |
665 | ||
666 | parent_sw = of_get_parent(link); | |
667 | if (!parent_sw) | |
668 | return -EINVAL; | |
669 | ||
670 | reg = of_get_property(parent_sw, "reg", &len); | |
671 | if (!reg || (len != sizeof(*reg) * 2)) | |
672 | return -EINVAL; | |
673 | ||
30303813 PN |
674 | /* |
675 | * Get the destination switch number from the second field of its 'reg' | |
676 | * property, i.e. for "reg = <0x19 1>" sw_addr is '1'. | |
677 | */ | |
5e95329b FF |
678 | link_sw_addr = be32_to_cpup(reg + 1); |
679 | ||
680 | if (link_sw_addr >= pd->nr_chips) | |
681 | return -EINVAL; | |
682 | ||
30303813 | 683 | cd->rtable[link_sw_addr] = port_index; |
5e95329b FF |
684 | |
685 | return 0; | |
5e95329b FF |
686 | } |
687 | ||
1e72e6f8 AL |
688 | static int dsa_of_probe_links(struct dsa_platform_data *pd, |
689 | struct dsa_chip_data *cd, | |
690 | int chip_index, int port_index, | |
691 | struct device_node *port, | |
692 | const char *port_name) | |
693 | { | |
694 | struct device_node *link; | |
695 | int link_index; | |
696 | int ret; | |
697 | ||
698 | for (link_index = 0;; link_index++) { | |
699 | link = of_parse_phandle(port, "link", link_index); | |
700 | if (!link) | |
701 | break; | |
702 | ||
703 | if (!strcmp(port_name, "dsa") && pd->nr_chips > 1) { | |
704 | ret = dsa_of_setup_routing_table(pd, cd, chip_index, | |
705 | port_index, link); | |
706 | if (ret) | |
707 | return ret; | |
708 | } | |
709 | } | |
710 | return 0; | |
711 | } | |
712 | ||
21168245 FF |
713 | static void dsa_of_free_platform_data(struct dsa_platform_data *pd) |
714 | { | |
715 | int i; | |
716 | int port_index; | |
717 | ||
718 | for (i = 0; i < pd->nr_chips; i++) { | |
719 | port_index = 0; | |
5f64a7db | 720 | while (port_index < DSA_MAX_PORTS) { |
1f74714f | 721 | kfree(pd->chip[i].port_names[port_index]); |
5f64a7db FF |
722 | port_index++; |
723 | } | |
e496ae69 RK |
724 | |
725 | /* Drop our reference to the MDIO bus device */ | |
726 | if (pd->chip[i].host_dev) | |
727 | put_device(pd->chip[i].host_dev); | |
21168245 FF |
728 | } |
729 | kfree(pd->chip); | |
730 | } | |
731 | ||
f1a26a06 | 732 | static int dsa_of_probe(struct device *dev) |
5e95329b | 733 | { |
f1a26a06 | 734 | struct device_node *np = dev->of_node; |
1e72e6f8 | 735 | struct device_node *child, *mdio, *ethernet, *port; |
6bc6d0a8 | 736 | struct mii_bus *mdio_bus, *mdio_bus_switch; |
769a0202 | 737 | struct net_device *ethernet_dev; |
5e95329b FF |
738 | struct dsa_platform_data *pd; |
739 | struct dsa_chip_data *cd; | |
740 | const char *port_name; | |
741 | int chip_index, port_index; | |
742 | const unsigned int *sw_addr, *port_reg; | |
6793abb4 | 743 | u32 eeprom_len; |
21168245 | 744 | int ret; |
5e95329b FF |
745 | |
746 | mdio = of_parse_phandle(np, "dsa,mii-bus", 0); | |
747 | if (!mdio) | |
748 | return -EINVAL; | |
749 | ||
750 | mdio_bus = of_mdio_find_bus(mdio); | |
751 | if (!mdio_bus) | |
b324c07a | 752 | return -EPROBE_DEFER; |
5e95329b FF |
753 | |
754 | ethernet = of_parse_phandle(np, "dsa,ethernet", 0); | |
e496ae69 RK |
755 | if (!ethernet) { |
756 | ret = -EINVAL; | |
757 | goto out_put_mdio; | |
758 | } | |
5e95329b | 759 | |
769a0202 | 760 | ethernet_dev = of_find_net_device_by_node(ethernet); |
e496ae69 RK |
761 | if (!ethernet_dev) { |
762 | ret = -EPROBE_DEFER; | |
763 | goto out_put_mdio; | |
764 | } | |
5e95329b FF |
765 | |
766 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); | |
e496ae69 RK |
767 | if (!pd) { |
768 | ret = -ENOMEM; | |
9861f720 | 769 | goto out_put_ethernet; |
e496ae69 | 770 | } |
5e95329b | 771 | |
f1a26a06 | 772 | dev->platform_data = pd; |
769a0202 | 773 | pd->of_netdev = ethernet_dev; |
e04449fc | 774 | pd->nr_chips = of_get_available_child_count(np); |
5e95329b FF |
775 | if (pd->nr_chips > DSA_MAX_SWITCHES) |
776 | pd->nr_chips = DSA_MAX_SWITCHES; | |
777 | ||
6f2aed6a FF |
778 | pd->chip = kcalloc(pd->nr_chips, sizeof(struct dsa_chip_data), |
779 | GFP_KERNEL); | |
5e95329b FF |
780 | if (!pd->chip) { |
781 | ret = -ENOMEM; | |
782 | goto out_free; | |
783 | } | |
784 | ||
d1c0b471 | 785 | chip_index = -1; |
5e95329b | 786 | for_each_available_child_of_node(np, child) { |
d390238c VD |
787 | int i; |
788 | ||
d1c0b471 | 789 | chip_index++; |
5e95329b FF |
790 | cd = &pd->chip[chip_index]; |
791 | ||
fa981d9a | 792 | cd->of_node = child; |
e496ae69 | 793 | |
d390238c VD |
794 | /* Initialize the routing table */ |
795 | for (i = 0; i < DSA_MAX_SWITCHES; ++i) | |
796 | cd->rtable[i] = DSA_RTABLE_NONE; | |
797 | ||
e496ae69 RK |
798 | /* When assigning the host device, increment its refcount */ |
799 | cd->host_dev = get_device(&mdio_bus->dev); | |
5e95329b FF |
800 | |
801 | sw_addr = of_get_property(child, "reg", NULL); | |
802 | if (!sw_addr) | |
803 | continue; | |
804 | ||
805 | cd->sw_addr = be32_to_cpup(sw_addr); | |
c8cf89f7 | 806 | if (cd->sw_addr >= PHY_MAX_ADDR) |
5e95329b FF |
807 | continue; |
808 | ||
50d4964f | 809 | if (!of_property_read_u32(child, "eeprom-length", &eeprom_len)) |
6793abb4 GR |
810 | cd->eeprom_len = eeprom_len; |
811 | ||
6bc6d0a8 AL |
812 | mdio = of_parse_phandle(child, "mii-bus", 0); |
813 | if (mdio) { | |
814 | mdio_bus_switch = of_mdio_find_bus(mdio); | |
815 | if (!mdio_bus_switch) { | |
816 | ret = -EPROBE_DEFER; | |
817 | goto out_free_chip; | |
818 | } | |
e496ae69 RK |
819 | |
820 | /* Drop the mdio_bus device ref, replacing the host | |
821 | * device with the mdio_bus_switch device, keeping | |
822 | * the refcount from of_mdio_find_bus() above. | |
823 | */ | |
824 | put_device(cd->host_dev); | |
6bc6d0a8 AL |
825 | cd->host_dev = &mdio_bus_switch->dev; |
826 | } | |
827 | ||
5e95329b FF |
828 | for_each_available_child_of_node(child, port) { |
829 | port_reg = of_get_property(port, "reg", NULL); | |
830 | if (!port_reg) | |
831 | continue; | |
832 | ||
833 | port_index = be32_to_cpup(port_reg); | |
8f5063e9 FF |
834 | if (port_index >= DSA_MAX_PORTS) |
835 | break; | |
5e95329b FF |
836 | |
837 | port_name = of_get_property(port, "label", NULL); | |
838 | if (!port_name) | |
839 | continue; | |
840 | ||
bd47497a FF |
841 | cd->port_dn[port_index] = port; |
842 | ||
5e95329b FF |
843 | cd->port_names[port_index] = kstrdup(port_name, |
844 | GFP_KERNEL); | |
845 | if (!cd->port_names[port_index]) { | |
846 | ret = -ENOMEM; | |
847 | goto out_free_chip; | |
848 | } | |
849 | ||
1e72e6f8 AL |
850 | ret = dsa_of_probe_links(pd, cd, chip_index, |
851 | port_index, port, port_name); | |
852 | if (ret) | |
853 | goto out_free_chip; | |
5e95329b | 854 | |
5e95329b FF |
855 | } |
856 | } | |
857 | ||
e496ae69 RK |
858 | /* The individual chips hold their own refcount on the mdio bus, |
859 | * so drop ours */ | |
860 | put_device(&mdio_bus->dev); | |
861 | ||
5e95329b FF |
862 | return 0; |
863 | ||
864 | out_free_chip: | |
21168245 | 865 | dsa_of_free_platform_data(pd); |
5e95329b FF |
866 | out_free: |
867 | kfree(pd); | |
f1a26a06 | 868 | dev->platform_data = NULL; |
9861f720 RK |
869 | out_put_ethernet: |
870 | put_device(ðernet_dev->dev); | |
e496ae69 RK |
871 | out_put_mdio: |
872 | put_device(&mdio_bus->dev); | |
5e95329b FF |
873 | return ret; |
874 | } | |
875 | ||
f1a26a06 | 876 | static void dsa_of_remove(struct device *dev) |
5e95329b | 877 | { |
f1a26a06 | 878 | struct dsa_platform_data *pd = dev->platform_data; |
5e95329b | 879 | |
f1a26a06 | 880 | if (!dev->of_node) |
5e95329b FF |
881 | return; |
882 | ||
21168245 | 883 | dsa_of_free_platform_data(pd); |
9861f720 | 884 | put_device(&pd->of_netdev->dev); |
5e95329b FF |
885 | kfree(pd); |
886 | } | |
887 | #else | |
f1a26a06 | 888 | static inline int dsa_of_probe(struct device *dev) |
5e95329b FF |
889 | { |
890 | return 0; | |
891 | } | |
892 | ||
f1a26a06 | 893 | static inline void dsa_of_remove(struct device *dev) |
5e95329b FF |
894 | { |
895 | } | |
896 | #endif | |
897 | ||
4d7f3e75 NA |
898 | static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, |
899 | struct device *parent, struct dsa_platform_data *pd) | |
c86e59b9 FF |
900 | { |
901 | int i; | |
4d7f3e75 | 902 | unsigned configured = 0; |
c86e59b9 FF |
903 | |
904 | dst->pd = pd; | |
905 | dst->master_netdev = dev; | |
906 | dst->cpu_switch = -1; | |
907 | dst->cpu_port = -1; | |
908 | ||
909 | for (i = 0; i < pd->nr_chips; i++) { | |
910 | struct dsa_switch *ds; | |
911 | ||
912 | ds = dsa_switch_setup(dst, i, parent, pd->chip[i].host_dev); | |
913 | if (IS_ERR(ds)) { | |
914 | netdev_err(dev, "[%d]: couldn't create dsa switch instance (error %ld)\n", | |
915 | i, PTR_ERR(ds)); | |
916 | continue; | |
917 | } | |
918 | ||
919 | dst->ds[i] = ds; | |
4d7f3e75 NA |
920 | |
921 | ++configured; | |
c86e59b9 FF |
922 | } |
923 | ||
4d7f3e75 NA |
924 | /* |
925 | * If no switch was found, exit cleanly | |
926 | */ | |
927 | if (!configured) | |
928 | return -EPROBE_DEFER; | |
929 | ||
c86e59b9 FF |
930 | /* |
931 | * If we use a tagging format that doesn't have an ethertype | |
932 | * field, make sure that all packets from this point on get | |
933 | * sent to the tag format's receive function. | |
934 | */ | |
935 | wmb(); | |
936 | dev->dsa_ptr = (void *)dst; | |
937 | ||
4d7f3e75 | 938 | return 0; |
c86e59b9 FF |
939 | } |
940 | ||
91da11f8 LB |
941 | static int dsa_probe(struct platform_device *pdev) |
942 | { | |
91da11f8 LB |
943 | struct dsa_platform_data *pd = pdev->dev.platform_data; |
944 | struct net_device *dev; | |
e84665c9 | 945 | struct dsa_switch_tree *dst; |
c86e59b9 | 946 | int ret; |
91da11f8 | 947 | |
a2ae6007 JP |
948 | pr_notice_once("Distributed Switch Architecture driver version %s\n", |
949 | dsa_driver_version); | |
91da11f8 | 950 | |
5e95329b | 951 | if (pdev->dev.of_node) { |
f1a26a06 | 952 | ret = dsa_of_probe(&pdev->dev); |
5e95329b FF |
953 | if (ret) |
954 | return ret; | |
955 | ||
956 | pd = pdev->dev.platform_data; | |
957 | } | |
958 | ||
769a0202 | 959 | if (pd == NULL || (pd->netdev == NULL && pd->of_netdev == NULL)) |
91da11f8 LB |
960 | return -EINVAL; |
961 | ||
769a0202 FF |
962 | if (pd->of_netdev) { |
963 | dev = pd->of_netdev; | |
964 | dev_hold(dev); | |
965 | } else { | |
966 | dev = dev_to_net_device(pd->netdev); | |
967 | } | |
5e95329b | 968 | if (dev == NULL) { |
b324c07a | 969 | ret = -EPROBE_DEFER; |
5e95329b FF |
970 | goto out; |
971 | } | |
91da11f8 LB |
972 | |
973 | if (dev->dsa_ptr != NULL) { | |
974 | dev_put(dev); | |
5e95329b FF |
975 | ret = -EEXIST; |
976 | goto out; | |
91da11f8 LB |
977 | } |
978 | ||
d4ac35d6 | 979 | dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL); |
e84665c9 | 980 | if (dst == NULL) { |
91da11f8 | 981 | dev_put(dev); |
5e95329b FF |
982 | ret = -ENOMEM; |
983 | goto out; | |
91da11f8 LB |
984 | } |
985 | ||
e84665c9 LB |
986 | platform_set_drvdata(pdev, dst); |
987 | ||
4d7f3e75 | 988 | ret = dsa_setup_dst(dst, dev, &pdev->dev, pd); |
679fb46c NA |
989 | if (ret) { |
990 | dev_put(dev); | |
4d7f3e75 | 991 | goto out; |
679fb46c | 992 | } |
91da11f8 LB |
993 | |
994 | return 0; | |
5e95329b FF |
995 | |
996 | out: | |
f1a26a06 | 997 | dsa_of_remove(&pdev->dev); |
5e95329b FF |
998 | |
999 | return ret; | |
91da11f8 LB |
1000 | } |
1001 | ||
c86e59b9 | 1002 | static void dsa_remove_dst(struct dsa_switch_tree *dst) |
91da11f8 | 1003 | { |
e84665c9 | 1004 | int i; |
91da11f8 | 1005 | |
04761890 NA |
1006 | dst->master_netdev->dsa_ptr = NULL; |
1007 | ||
1008 | /* If we used a tagging format that doesn't have an ethertype | |
1009 | * field, make sure that all packets from this point get sent | |
1010 | * without the tag and go through the regular receive path. | |
1011 | */ | |
1012 | wmb(); | |
1013 | ||
e84665c9 LB |
1014 | for (i = 0; i < dst->pd->nr_chips; i++) { |
1015 | struct dsa_switch *ds = dst->ds[i]; | |
1016 | ||
d4ac35d6 | 1017 | if (ds) |
e84665c9 LB |
1018 | dsa_switch_destroy(ds); |
1019 | } | |
679fb46c | 1020 | |
0c73c523 FF |
1021 | dsa_cpu_port_ethtool_restore(dst->ds[0]); |
1022 | ||
679fb46c | 1023 | dev_put(dst->master_netdev); |
c86e59b9 FF |
1024 | } |
1025 | ||
1026 | static int dsa_remove(struct platform_device *pdev) | |
1027 | { | |
1028 | struct dsa_switch_tree *dst = platform_get_drvdata(pdev); | |
91da11f8 | 1029 | |
c86e59b9 | 1030 | dsa_remove_dst(dst); |
f1a26a06 | 1031 | dsa_of_remove(&pdev->dev); |
5e95329b | 1032 | |
91da11f8 LB |
1033 | return 0; |
1034 | } | |
1035 | ||
1036 | static void dsa_shutdown(struct platform_device *pdev) | |
1037 | { | |
1038 | } | |
1039 | ||
3e8a72d1 FF |
1040 | static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev, |
1041 | struct packet_type *pt, struct net_device *orig_dev) | |
1042 | { | |
1043 | struct dsa_switch_tree *dst = dev->dsa_ptr; | |
1044 | ||
1045 | if (unlikely(dst == NULL)) { | |
1046 | kfree_skb(skb); | |
1047 | return 0; | |
1048 | } | |
1049 | ||
5075314e | 1050 | return dst->rcv(skb, dev, pt, orig_dev); |
3e8a72d1 FF |
1051 | } |
1052 | ||
61b7363f | 1053 | static struct packet_type dsa_pack_type __read_mostly = { |
3e8a72d1 FF |
1054 | .type = cpu_to_be16(ETH_P_XDSA), |
1055 | .func = dsa_switch_rcv, | |
1056 | }; | |
1057 | ||
b73adef6 FF |
1058 | static struct notifier_block dsa_netdevice_nb __read_mostly = { |
1059 | .notifier_call = dsa_slave_netdevice_event, | |
1060 | }; | |
1061 | ||
24462549 FF |
1062 | #ifdef CONFIG_PM_SLEEP |
1063 | static int dsa_suspend(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_suspend(ds); | |
1074 | } | |
1075 | ||
1076 | return ret; | |
1077 | } | |
1078 | ||
1079 | static int dsa_resume(struct device *d) | |
1080 | { | |
1081 | struct platform_device *pdev = to_platform_device(d); | |
1082 | struct dsa_switch_tree *dst = platform_get_drvdata(pdev); | |
1083 | int i, ret = 0; | |
1084 | ||
1085 | for (i = 0; i < dst->pd->nr_chips; i++) { | |
1086 | struct dsa_switch *ds = dst->ds[i]; | |
1087 | ||
1088 | if (ds != NULL) | |
1089 | ret = dsa_switch_resume(ds); | |
1090 | } | |
1091 | ||
1092 | return ret; | |
1093 | } | |
1094 | #endif | |
1095 | ||
1096 | static SIMPLE_DEV_PM_OPS(dsa_pm_ops, dsa_suspend, dsa_resume); | |
1097 | ||
5e95329b FF |
1098 | static const struct of_device_id dsa_of_match_table[] = { |
1099 | { .compatible = "marvell,dsa", }, | |
1100 | {} | |
1101 | }; | |
1102 | MODULE_DEVICE_TABLE(of, dsa_of_match_table); | |
1103 | ||
91da11f8 LB |
1104 | static struct platform_driver dsa_driver = { |
1105 | .probe = dsa_probe, | |
1106 | .remove = dsa_remove, | |
1107 | .shutdown = dsa_shutdown, | |
1108 | .driver = { | |
1109 | .name = "dsa", | |
5e95329b | 1110 | .of_match_table = dsa_of_match_table, |
24462549 | 1111 | .pm = &dsa_pm_ops, |
91da11f8 LB |
1112 | }, |
1113 | }; | |
1114 | ||
1115 | static int __init dsa_init_module(void) | |
1116 | { | |
7df899c3 BH |
1117 | int rc; |
1118 | ||
b73adef6 FF |
1119 | register_netdevice_notifier(&dsa_netdevice_nb); |
1120 | ||
7df899c3 BH |
1121 | rc = platform_driver_register(&dsa_driver); |
1122 | if (rc) | |
1123 | return rc; | |
1124 | ||
3e8a72d1 FF |
1125 | dev_add_pack(&dsa_pack_type); |
1126 | ||
7df899c3 | 1127 | return 0; |
91da11f8 LB |
1128 | } |
1129 | module_init(dsa_init_module); | |
1130 | ||
1131 | static void __exit dsa_cleanup_module(void) | |
1132 | { | |
b73adef6 | 1133 | unregister_netdevice_notifier(&dsa_netdevice_nb); |
3e8a72d1 | 1134 | dev_remove_pack(&dsa_pack_type); |
91da11f8 LB |
1135 | platform_driver_unregister(&dsa_driver); |
1136 | } | |
1137 | module_exit(dsa_cleanup_module); | |
1138 | ||
577d6a7c | 1139 | MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>"); |
91da11f8 LB |
1140 | MODULE_DESCRIPTION("Driver for Distributed Switch Architecture switch chips"); |
1141 | MODULE_LICENSE("GPL"); | |
1142 | MODULE_ALIAS("platform:dsa"); |