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Commit | Line | Data |
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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 | ||
12 | #include <linux/list.h> | |
13 | #include <linux/netdevice.h> | |
14 | #include <linux/platform_device.h> | |
5a0e3ad6 | 15 | #include <linux/slab.h> |
3a9a231d | 16 | #include <linux/module.h> |
91da11f8 | 17 | #include <net/dsa.h> |
5e95329b FF |
18 | #include <linux/of.h> |
19 | #include <linux/of_mdio.h> | |
20 | #include <linux/of_platform.h> | |
91da11f8 LB |
21 | #include "dsa_priv.h" |
22 | ||
23 | char dsa_driver_version[] = "0.1"; | |
24 | ||
25 | ||
26 | /* switch driver registration ***********************************************/ | |
27 | static DEFINE_MUTEX(dsa_switch_drivers_mutex); | |
28 | static LIST_HEAD(dsa_switch_drivers); | |
29 | ||
30 | void register_switch_driver(struct dsa_switch_driver *drv) | |
31 | { | |
32 | mutex_lock(&dsa_switch_drivers_mutex); | |
33 | list_add_tail(&drv->list, &dsa_switch_drivers); | |
34 | mutex_unlock(&dsa_switch_drivers_mutex); | |
35 | } | |
ad293b8a | 36 | EXPORT_SYMBOL_GPL(register_switch_driver); |
91da11f8 LB |
37 | |
38 | void unregister_switch_driver(struct dsa_switch_driver *drv) | |
39 | { | |
40 | mutex_lock(&dsa_switch_drivers_mutex); | |
41 | list_del_init(&drv->list); | |
42 | mutex_unlock(&dsa_switch_drivers_mutex); | |
43 | } | |
ad293b8a | 44 | EXPORT_SYMBOL_GPL(unregister_switch_driver); |
91da11f8 LB |
45 | |
46 | static struct dsa_switch_driver * | |
47 | dsa_switch_probe(struct mii_bus *bus, int sw_addr, char **_name) | |
48 | { | |
49 | struct dsa_switch_driver *ret; | |
50 | struct list_head *list; | |
51 | char *name; | |
52 | ||
53 | ret = NULL; | |
54 | name = NULL; | |
55 | ||
56 | mutex_lock(&dsa_switch_drivers_mutex); | |
57 | list_for_each(list, &dsa_switch_drivers) { | |
58 | struct dsa_switch_driver *drv; | |
59 | ||
60 | drv = list_entry(list, struct dsa_switch_driver, list); | |
61 | ||
62 | name = drv->probe(bus, sw_addr); | |
63 | if (name != NULL) { | |
64 | ret = drv; | |
65 | break; | |
66 | } | |
67 | } | |
68 | mutex_unlock(&dsa_switch_drivers_mutex); | |
69 | ||
70 | *_name = name; | |
71 | ||
72 | return ret; | |
73 | } | |
74 | ||
75 | ||
76 | /* basic switch operations **************************************************/ | |
77 | static struct dsa_switch * | |
e84665c9 LB |
78 | dsa_switch_setup(struct dsa_switch_tree *dst, int index, |
79 | struct device *parent, struct mii_bus *bus) | |
91da11f8 | 80 | { |
e84665c9 LB |
81 | struct dsa_chip_data *pd = dst->pd->chip + index; |
82 | struct dsa_switch_driver *drv; | |
91da11f8 LB |
83 | struct dsa_switch *ds; |
84 | int ret; | |
91da11f8 LB |
85 | char *name; |
86 | int i; | |
f9bf5a2c | 87 | bool valid_name_found = false; |
91da11f8 LB |
88 | |
89 | /* | |
90 | * Probe for switch model. | |
91 | */ | |
92 | drv = dsa_switch_probe(bus, pd->sw_addr, &name); | |
93 | if (drv == NULL) { | |
e84665c9 LB |
94 | printk(KERN_ERR "%s[%d]: could not detect attached switch\n", |
95 | dst->master_netdev->name, index); | |
91da11f8 LB |
96 | return ERR_PTR(-EINVAL); |
97 | } | |
e84665c9 LB |
98 | printk(KERN_INFO "%s[%d]: detected a %s switch\n", |
99 | dst->master_netdev->name, index, name); | |
91da11f8 LB |
100 | |
101 | ||
102 | /* | |
103 | * Allocate and initialise switch state. | |
104 | */ | |
105 | ds = kzalloc(sizeof(*ds) + drv->priv_size, GFP_KERNEL); | |
106 | if (ds == NULL) | |
107 | return ERR_PTR(-ENOMEM); | |
108 | ||
e84665c9 LB |
109 | ds->dst = dst; |
110 | ds->index = index; | |
111 | ds->pd = dst->pd->chip + index; | |
91da11f8 | 112 | ds->drv = drv; |
e84665c9 | 113 | ds->master_mii_bus = bus; |
91da11f8 LB |
114 | |
115 | ||
116 | /* | |
117 | * Validate supplied switch configuration. | |
118 | */ | |
91da11f8 LB |
119 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
120 | char *name; | |
121 | ||
122 | name = pd->port_names[i]; | |
123 | if (name == NULL) | |
124 | continue; | |
125 | ||
126 | if (!strcmp(name, "cpu")) { | |
e84665c9 | 127 | if (dst->cpu_switch != -1) { |
91da11f8 LB |
128 | printk(KERN_ERR "multiple cpu ports?!\n"); |
129 | ret = -EINVAL; | |
130 | goto out; | |
131 | } | |
e84665c9 LB |
132 | dst->cpu_switch = index; |
133 | dst->cpu_port = i; | |
134 | } else if (!strcmp(name, "dsa")) { | |
135 | ds->dsa_port_mask |= 1 << i; | |
91da11f8 | 136 | } else { |
e84665c9 | 137 | ds->phys_port_mask |= 1 << i; |
91da11f8 | 138 | } |
f9bf5a2c | 139 | valid_name_found = true; |
91da11f8 LB |
140 | } |
141 | ||
f9bf5a2c FF |
142 | if (!valid_name_found && i == DSA_MAX_PORTS) { |
143 | ret = -EINVAL; | |
144 | goto out; | |
145 | } | |
91da11f8 LB |
146 | |
147 | /* | |
e84665c9 LB |
148 | * If the CPU connects to this switch, set the switch tree |
149 | * tagging protocol to the preferred tagging format of this | |
150 | * switch. | |
91da11f8 | 151 | */ |
e84665c9 LB |
152 | if (ds->dst->cpu_switch == index) |
153 | ds->dst->tag_protocol = drv->tag_protocol; | |
91da11f8 LB |
154 | |
155 | ||
156 | /* | |
157 | * Do basic register setup. | |
158 | */ | |
159 | ret = drv->setup(ds); | |
160 | if (ret < 0) | |
161 | goto out; | |
162 | ||
e84665c9 | 163 | ret = drv->set_addr(ds, dst->master_netdev->dev_addr); |
91da11f8 LB |
164 | if (ret < 0) |
165 | goto out; | |
166 | ||
167 | ds->slave_mii_bus = mdiobus_alloc(); | |
168 | if (ds->slave_mii_bus == NULL) { | |
169 | ret = -ENOMEM; | |
170 | goto out; | |
171 | } | |
172 | dsa_slave_mii_bus_init(ds); | |
173 | ||
174 | ret = mdiobus_register(ds->slave_mii_bus); | |
175 | if (ret < 0) | |
176 | goto out_free; | |
177 | ||
178 | ||
179 | /* | |
180 | * Create network devices for physical switch ports. | |
181 | */ | |
91da11f8 LB |
182 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
183 | struct net_device *slave_dev; | |
184 | ||
e84665c9 | 185 | if (!(ds->phys_port_mask & (1 << i))) |
91da11f8 LB |
186 | continue; |
187 | ||
188 | slave_dev = dsa_slave_create(ds, parent, i, pd->port_names[i]); | |
189 | if (slave_dev == NULL) { | |
e84665c9 LB |
190 | printk(KERN_ERR "%s[%d]: can't create dsa " |
191 | "slave device for port %d(%s)\n", | |
192 | dst->master_netdev->name, | |
193 | index, i, pd->port_names[i]); | |
91da11f8 LB |
194 | continue; |
195 | } | |
196 | ||
197 | ds->ports[i] = slave_dev; | |
198 | } | |
199 | ||
200 | return ds; | |
201 | ||
202 | out_free: | |
203 | mdiobus_free(ds->slave_mii_bus); | |
204 | out: | |
91da11f8 LB |
205 | kfree(ds); |
206 | return ERR_PTR(ret); | |
207 | } | |
208 | ||
209 | static void dsa_switch_destroy(struct dsa_switch *ds) | |
210 | { | |
211 | } | |
212 | ||
213 | ||
214 | /* link polling *************************************************************/ | |
215 | static void dsa_link_poll_work(struct work_struct *ugly) | |
216 | { | |
e84665c9 LB |
217 | struct dsa_switch_tree *dst; |
218 | int i; | |
219 | ||
220 | dst = container_of(ugly, struct dsa_switch_tree, link_poll_work); | |
91da11f8 | 221 | |
e84665c9 LB |
222 | for (i = 0; i < dst->pd->nr_chips; i++) { |
223 | struct dsa_switch *ds = dst->ds[i]; | |
91da11f8 | 224 | |
e84665c9 LB |
225 | if (ds != NULL && ds->drv->poll_link != NULL) |
226 | ds->drv->poll_link(ds); | |
227 | } | |
228 | ||
229 | mod_timer(&dst->link_poll_timer, round_jiffies(jiffies + HZ)); | |
91da11f8 LB |
230 | } |
231 | ||
e84665c9 | 232 | static void dsa_link_poll_timer(unsigned long _dst) |
91da11f8 | 233 | { |
e84665c9 | 234 | struct dsa_switch_tree *dst = (void *)_dst; |
91da11f8 | 235 | |
e84665c9 | 236 | schedule_work(&dst->link_poll_work); |
91da11f8 LB |
237 | } |
238 | ||
239 | ||
240 | /* platform driver init and cleanup *****************************************/ | |
241 | static int dev_is_class(struct device *dev, void *class) | |
242 | { | |
243 | if (dev->class != NULL && !strcmp(dev->class->name, class)) | |
244 | return 1; | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | static struct device *dev_find_class(struct device *parent, char *class) | |
250 | { | |
251 | if (dev_is_class(parent, class)) { | |
252 | get_device(parent); | |
253 | return parent; | |
254 | } | |
255 | ||
256 | return device_find_child(parent, class, dev_is_class); | |
257 | } | |
258 | ||
259 | static struct mii_bus *dev_to_mii_bus(struct device *dev) | |
260 | { | |
261 | struct device *d; | |
262 | ||
263 | d = dev_find_class(dev, "mdio_bus"); | |
264 | if (d != NULL) { | |
265 | struct mii_bus *bus; | |
266 | ||
267 | bus = to_mii_bus(d); | |
268 | put_device(d); | |
269 | ||
270 | return bus; | |
271 | } | |
272 | ||
273 | return NULL; | |
274 | } | |
275 | ||
276 | static struct net_device *dev_to_net_device(struct device *dev) | |
277 | { | |
278 | struct device *d; | |
279 | ||
280 | d = dev_find_class(dev, "net"); | |
281 | if (d != NULL) { | |
282 | struct net_device *nd; | |
283 | ||
284 | nd = to_net_dev(d); | |
285 | dev_hold(nd); | |
286 | put_device(d); | |
287 | ||
288 | return nd; | |
289 | } | |
290 | ||
291 | return NULL; | |
292 | } | |
293 | ||
5e95329b FF |
294 | #ifdef CONFIG_OF |
295 | static int dsa_of_setup_routing_table(struct dsa_platform_data *pd, | |
296 | struct dsa_chip_data *cd, | |
297 | int chip_index, | |
298 | struct device_node *link) | |
299 | { | |
300 | int ret; | |
301 | const __be32 *reg; | |
302 | int link_port_addr; | |
303 | int link_sw_addr; | |
304 | struct device_node *parent_sw; | |
305 | int len; | |
306 | ||
307 | parent_sw = of_get_parent(link); | |
308 | if (!parent_sw) | |
309 | return -EINVAL; | |
310 | ||
311 | reg = of_get_property(parent_sw, "reg", &len); | |
312 | if (!reg || (len != sizeof(*reg) * 2)) | |
313 | return -EINVAL; | |
314 | ||
315 | link_sw_addr = be32_to_cpup(reg + 1); | |
316 | ||
317 | if (link_sw_addr >= pd->nr_chips) | |
318 | return -EINVAL; | |
319 | ||
320 | /* First time routing table allocation */ | |
321 | if (!cd->rtable) { | |
322 | cd->rtable = kmalloc(pd->nr_chips * sizeof(s8), GFP_KERNEL); | |
323 | if (!cd->rtable) | |
324 | return -ENOMEM; | |
325 | ||
326 | /* default to no valid uplink/downlink */ | |
327 | memset(cd->rtable, -1, pd->nr_chips * sizeof(s8)); | |
328 | } | |
329 | ||
330 | reg = of_get_property(link, "reg", NULL); | |
331 | if (!reg) { | |
332 | ret = -EINVAL; | |
333 | goto out; | |
334 | } | |
335 | ||
336 | link_port_addr = be32_to_cpup(reg); | |
337 | ||
338 | cd->rtable[link_sw_addr] = link_port_addr; | |
339 | ||
340 | return 0; | |
341 | out: | |
342 | kfree(cd->rtable); | |
343 | return ret; | |
344 | } | |
345 | ||
21168245 FF |
346 | static void dsa_of_free_platform_data(struct dsa_platform_data *pd) |
347 | { | |
348 | int i; | |
349 | int port_index; | |
350 | ||
351 | for (i = 0; i < pd->nr_chips; i++) { | |
352 | port_index = 0; | |
353 | while (pd->chip[i].port_names && | |
354 | pd->chip[i].port_names[++port_index]) | |
355 | kfree(pd->chip[i].port_names[port_index]); | |
356 | kfree(pd->chip[i].rtable); | |
357 | } | |
358 | kfree(pd->chip); | |
359 | } | |
360 | ||
5e95329b FF |
361 | static int dsa_of_probe(struct platform_device *pdev) |
362 | { | |
363 | struct device_node *np = pdev->dev.of_node; | |
364 | struct device_node *child, *mdio, *ethernet, *port, *link; | |
365 | struct mii_bus *mdio_bus; | |
366 | struct platform_device *ethernet_dev; | |
367 | struct dsa_platform_data *pd; | |
368 | struct dsa_chip_data *cd; | |
369 | const char *port_name; | |
370 | int chip_index, port_index; | |
371 | const unsigned int *sw_addr, *port_reg; | |
21168245 | 372 | int ret; |
5e95329b FF |
373 | |
374 | mdio = of_parse_phandle(np, "dsa,mii-bus", 0); | |
375 | if (!mdio) | |
376 | return -EINVAL; | |
377 | ||
378 | mdio_bus = of_mdio_find_bus(mdio); | |
379 | if (!mdio_bus) | |
380 | return -EINVAL; | |
381 | ||
382 | ethernet = of_parse_phandle(np, "dsa,ethernet", 0); | |
383 | if (!ethernet) | |
384 | return -EINVAL; | |
385 | ||
386 | ethernet_dev = of_find_device_by_node(ethernet); | |
387 | if (!ethernet_dev) | |
388 | return -ENODEV; | |
389 | ||
390 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); | |
391 | if (!pd) | |
392 | return -ENOMEM; | |
393 | ||
394 | pdev->dev.platform_data = pd; | |
395 | pd->netdev = ðernet_dev->dev; | |
396 | pd->nr_chips = of_get_child_count(np); | |
397 | if (pd->nr_chips > DSA_MAX_SWITCHES) | |
398 | pd->nr_chips = DSA_MAX_SWITCHES; | |
399 | ||
400 | pd->chip = kzalloc(pd->nr_chips * sizeof(struct dsa_chip_data), | |
401 | GFP_KERNEL); | |
402 | if (!pd->chip) { | |
403 | ret = -ENOMEM; | |
404 | goto out_free; | |
405 | } | |
406 | ||
407 | chip_index = 0; | |
408 | for_each_available_child_of_node(np, child) { | |
409 | cd = &pd->chip[chip_index]; | |
410 | ||
411 | cd->mii_bus = &mdio_bus->dev; | |
412 | ||
413 | sw_addr = of_get_property(child, "reg", NULL); | |
414 | if (!sw_addr) | |
415 | continue; | |
416 | ||
417 | cd->sw_addr = be32_to_cpup(sw_addr); | |
418 | if (cd->sw_addr > PHY_MAX_ADDR) | |
419 | continue; | |
420 | ||
421 | for_each_available_child_of_node(child, port) { | |
422 | port_reg = of_get_property(port, "reg", NULL); | |
423 | if (!port_reg) | |
424 | continue; | |
425 | ||
426 | port_index = be32_to_cpup(port_reg); | |
427 | ||
428 | port_name = of_get_property(port, "label", NULL); | |
429 | if (!port_name) | |
430 | continue; | |
431 | ||
432 | cd->port_names[port_index] = kstrdup(port_name, | |
433 | GFP_KERNEL); | |
434 | if (!cd->port_names[port_index]) { | |
435 | ret = -ENOMEM; | |
436 | goto out_free_chip; | |
437 | } | |
438 | ||
439 | link = of_parse_phandle(port, "link", 0); | |
440 | ||
441 | if (!strcmp(port_name, "dsa") && link && | |
442 | pd->nr_chips > 1) { | |
443 | ret = dsa_of_setup_routing_table(pd, cd, | |
444 | chip_index, link); | |
445 | if (ret) | |
446 | goto out_free_chip; | |
447 | } | |
448 | ||
449 | if (port_index == DSA_MAX_PORTS) | |
450 | break; | |
451 | } | |
452 | } | |
453 | ||
454 | return 0; | |
455 | ||
456 | out_free_chip: | |
21168245 | 457 | dsa_of_free_platform_data(pd); |
5e95329b FF |
458 | out_free: |
459 | kfree(pd); | |
460 | pdev->dev.platform_data = NULL; | |
461 | return ret; | |
462 | } | |
463 | ||
464 | static void dsa_of_remove(struct platform_device *pdev) | |
465 | { | |
466 | struct dsa_platform_data *pd = pdev->dev.platform_data; | |
5e95329b FF |
467 | |
468 | if (!pdev->dev.of_node) | |
469 | return; | |
470 | ||
21168245 | 471 | dsa_of_free_platform_data(pd); |
5e95329b FF |
472 | kfree(pd); |
473 | } | |
474 | #else | |
475 | static inline int dsa_of_probe(struct platform_device *pdev) | |
476 | { | |
477 | return 0; | |
478 | } | |
479 | ||
480 | static inline void dsa_of_remove(struct platform_device *pdev) | |
481 | { | |
482 | } | |
483 | #endif | |
484 | ||
91da11f8 LB |
485 | static int dsa_probe(struct platform_device *pdev) |
486 | { | |
487 | static int dsa_version_printed; | |
488 | struct dsa_platform_data *pd = pdev->dev.platform_data; | |
489 | struct net_device *dev; | |
e84665c9 | 490 | struct dsa_switch_tree *dst; |
5e95329b | 491 | int i, ret; |
91da11f8 LB |
492 | |
493 | if (!dsa_version_printed++) | |
494 | printk(KERN_NOTICE "Distributed Switch Architecture " | |
495 | "driver version %s\n", dsa_driver_version); | |
496 | ||
5e95329b FF |
497 | if (pdev->dev.of_node) { |
498 | ret = dsa_of_probe(pdev); | |
499 | if (ret) | |
500 | return ret; | |
501 | ||
502 | pd = pdev->dev.platform_data; | |
503 | } | |
504 | ||
e84665c9 | 505 | if (pd == NULL || pd->netdev == NULL) |
91da11f8 LB |
506 | return -EINVAL; |
507 | ||
508 | dev = dev_to_net_device(pd->netdev); | |
5e95329b FF |
509 | if (dev == NULL) { |
510 | ret = -EINVAL; | |
511 | goto out; | |
512 | } | |
91da11f8 LB |
513 | |
514 | if (dev->dsa_ptr != NULL) { | |
515 | dev_put(dev); | |
5e95329b FF |
516 | ret = -EEXIST; |
517 | goto out; | |
91da11f8 LB |
518 | } |
519 | ||
e84665c9 LB |
520 | dst = kzalloc(sizeof(*dst), GFP_KERNEL); |
521 | if (dst == NULL) { | |
91da11f8 | 522 | dev_put(dev); |
5e95329b FF |
523 | ret = -ENOMEM; |
524 | goto out; | |
91da11f8 LB |
525 | } |
526 | ||
e84665c9 LB |
527 | platform_set_drvdata(pdev, dst); |
528 | ||
529 | dst->pd = pd; | |
530 | dst->master_netdev = dev; | |
531 | dst->cpu_switch = -1; | |
532 | dst->cpu_port = -1; | |
533 | ||
534 | for (i = 0; i < pd->nr_chips; i++) { | |
535 | struct mii_bus *bus; | |
536 | struct dsa_switch *ds; | |
537 | ||
538 | bus = dev_to_mii_bus(pd->chip[i].mii_bus); | |
539 | if (bus == NULL) { | |
540 | printk(KERN_ERR "%s[%d]: no mii bus found for " | |
541 | "dsa switch\n", dev->name, i); | |
542 | continue; | |
543 | } | |
544 | ||
545 | ds = dsa_switch_setup(dst, i, &pdev->dev, bus); | |
546 | if (IS_ERR(ds)) { | |
547 | printk(KERN_ERR "%s[%d]: couldn't create dsa switch " | |
548 | "instance (error %ld)\n", dev->name, i, | |
549 | PTR_ERR(ds)); | |
550 | continue; | |
551 | } | |
552 | ||
553 | dst->ds[i] = ds; | |
554 | if (ds->drv->poll_link != NULL) | |
555 | dst->link_poll_needed = 1; | |
91da11f8 LB |
556 | } |
557 | ||
e84665c9 LB |
558 | /* |
559 | * If we use a tagging format that doesn't have an ethertype | |
560 | * field, make sure that all packets from this point on get | |
561 | * sent to the tag format's receive function. | |
562 | */ | |
563 | wmb(); | |
564 | dev->dsa_ptr = (void *)dst; | |
565 | ||
566 | if (dst->link_poll_needed) { | |
567 | INIT_WORK(&dst->link_poll_work, dsa_link_poll_work); | |
568 | init_timer(&dst->link_poll_timer); | |
569 | dst->link_poll_timer.data = (unsigned long)dst; | |
570 | dst->link_poll_timer.function = dsa_link_poll_timer; | |
571 | dst->link_poll_timer.expires = round_jiffies(jiffies + HZ); | |
572 | add_timer(&dst->link_poll_timer); | |
573 | } | |
91da11f8 LB |
574 | |
575 | return 0; | |
5e95329b FF |
576 | |
577 | out: | |
578 | dsa_of_remove(pdev); | |
579 | ||
580 | return ret; | |
91da11f8 LB |
581 | } |
582 | ||
583 | static int dsa_remove(struct platform_device *pdev) | |
584 | { | |
e84665c9 LB |
585 | struct dsa_switch_tree *dst = platform_get_drvdata(pdev); |
586 | int i; | |
91da11f8 | 587 | |
e84665c9 LB |
588 | if (dst->link_poll_needed) |
589 | del_timer_sync(&dst->link_poll_timer); | |
91da11f8 | 590 | |
43829731 | 591 | flush_work(&dst->link_poll_work); |
91da11f8 | 592 | |
e84665c9 LB |
593 | for (i = 0; i < dst->pd->nr_chips; i++) { |
594 | struct dsa_switch *ds = dst->ds[i]; | |
595 | ||
596 | if (ds != NULL) | |
597 | dsa_switch_destroy(ds); | |
598 | } | |
91da11f8 | 599 | |
5e95329b FF |
600 | dsa_of_remove(pdev); |
601 | ||
91da11f8 LB |
602 | return 0; |
603 | } | |
604 | ||
605 | static void dsa_shutdown(struct platform_device *pdev) | |
606 | { | |
607 | } | |
608 | ||
5e95329b FF |
609 | static const struct of_device_id dsa_of_match_table[] = { |
610 | { .compatible = "marvell,dsa", }, | |
611 | {} | |
612 | }; | |
613 | MODULE_DEVICE_TABLE(of, dsa_of_match_table); | |
614 | ||
91da11f8 LB |
615 | static struct platform_driver dsa_driver = { |
616 | .probe = dsa_probe, | |
617 | .remove = dsa_remove, | |
618 | .shutdown = dsa_shutdown, | |
619 | .driver = { | |
620 | .name = "dsa", | |
621 | .owner = THIS_MODULE, | |
5e95329b | 622 | .of_match_table = dsa_of_match_table, |
91da11f8 LB |
623 | }, |
624 | }; | |
625 | ||
626 | static int __init dsa_init_module(void) | |
627 | { | |
7df899c3 BH |
628 | int rc; |
629 | ||
630 | rc = platform_driver_register(&dsa_driver); | |
631 | if (rc) | |
632 | return rc; | |
633 | ||
634 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
635 | dev_add_pack(&dsa_packet_type); | |
636 | #endif | |
637 | #ifdef CONFIG_NET_DSA_TAG_EDSA | |
638 | dev_add_pack(&edsa_packet_type); | |
639 | #endif | |
640 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
641 | dev_add_pack(&trailer_packet_type); | |
642 | #endif | |
643 | return 0; | |
91da11f8 LB |
644 | } |
645 | module_init(dsa_init_module); | |
646 | ||
647 | static void __exit dsa_cleanup_module(void) | |
648 | { | |
7df899c3 BH |
649 | #ifdef CONFIG_NET_DSA_TAG_TRAILER |
650 | dev_remove_pack(&trailer_packet_type); | |
651 | #endif | |
652 | #ifdef CONFIG_NET_DSA_TAG_EDSA | |
653 | dev_remove_pack(&edsa_packet_type); | |
654 | #endif | |
655 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
656 | dev_remove_pack(&dsa_packet_type); | |
657 | #endif | |
91da11f8 LB |
658 | platform_driver_unregister(&dsa_driver); |
659 | } | |
660 | module_exit(dsa_cleanup_module); | |
661 | ||
577d6a7c | 662 | MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>"); |
91da11f8 LB |
663 | MODULE_DESCRIPTION("Driver for Distributed Switch Architecture switch chips"); |
664 | MODULE_LICENSE("GPL"); | |
665 | MODULE_ALIAS("platform:dsa"); |