Commit | Line | Data |
---|---|---|
3e256b8f LRV |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
3 | * | |
4 | * Authors: | |
5 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> | |
6 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the | |
20 | * Free Software Foundation, Inc., | |
21 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | */ | |
23 | ||
52858b51 | 24 | #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__ |
ed1e0ad8 | 25 | |
3e256b8f LRV |
26 | #include <linux/init.h> |
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/slab.h> | |
be055b2f | 30 | #include <linux/rfkill.h> |
7c7cd3bf | 31 | #include <linux/nfc.h> |
3e256b8f | 32 | |
5df16cad SO |
33 | #include <net/genetlink.h> |
34 | ||
3e256b8f LRV |
35 | #include "nfc.h" |
36 | ||
37 | #define VERSION "0.1" | |
38 | ||
c8d56ae7 EL |
39 | #define NFC_CHECK_PRES_FREQ_MS 2000 |
40 | ||
3e256b8f LRV |
41 | int nfc_devlist_generation; |
42 | DEFINE_MUTEX(nfc_devlist_mutex); | |
43 | ||
7eda8b8e SO |
44 | /* NFC device ID bitmap */ |
45 | static DEFINE_IDA(nfc_index_ida); | |
46 | ||
9ea7187c | 47 | int nfc_fw_download(struct nfc_dev *dev, const char *firmware_name) |
9674da87 EL |
48 | { |
49 | int rc = 0; | |
50 | ||
51 | pr_debug("%s do firmware %s\n", dev_name(&dev->dev), firmware_name); | |
52 | ||
53 | device_lock(&dev->dev); | |
54 | ||
55 | if (!device_is_registered(&dev->dev)) { | |
56 | rc = -ENODEV; | |
57 | goto error; | |
58 | } | |
59 | ||
60 | if (dev->dev_up) { | |
61 | rc = -EBUSY; | |
62 | goto error; | |
63 | } | |
64 | ||
9ea7187c | 65 | if (!dev->ops->fw_download) { |
9674da87 EL |
66 | rc = -EOPNOTSUPP; |
67 | goto error; | |
68 | } | |
69 | ||
9ea7187c SO |
70 | dev->fw_download_in_progress = true; |
71 | rc = dev->ops->fw_download(dev, firmware_name); | |
9674da87 | 72 | if (rc) |
9ea7187c | 73 | dev->fw_download_in_progress = false; |
9674da87 EL |
74 | |
75 | error: | |
76 | device_unlock(&dev->dev); | |
77 | return rc; | |
78 | } | |
79 | ||
352a5f5f EL |
80 | /** |
81 | * nfc_fw_download_done - inform that a firmware download was completed | |
82 | * | |
83 | * @dev: The nfc device to which firmware was downloaded | |
84 | * @firmware_name: The firmware filename | |
85 | * @result: The positive value of a standard errno value | |
86 | */ | |
87 | int nfc_fw_download_done(struct nfc_dev *dev, const char *firmware_name, | |
88 | u32 result) | |
9674da87 | 89 | { |
9ea7187c | 90 | dev->fw_download_in_progress = false; |
9674da87 | 91 | |
352a5f5f | 92 | return nfc_genl_fw_download_done(dev, firmware_name, result); |
9674da87 | 93 | } |
9ea7187c | 94 | EXPORT_SYMBOL(nfc_fw_download_done); |
9674da87 | 95 | |
8b3fe7b5 IE |
96 | /** |
97 | * nfc_dev_up - turn on the NFC device | |
98 | * | |
99 | * @dev: The nfc device to be turned on | |
100 | * | |
101 | * The device remains up until the nfc_dev_down function is called. | |
102 | */ | |
103 | int nfc_dev_up(struct nfc_dev *dev) | |
104 | { | |
105 | int rc = 0; | |
106 | ||
20c239c1 | 107 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
8b3fe7b5 IE |
108 | |
109 | device_lock(&dev->dev); | |
110 | ||
be055b2f SO |
111 | if (dev->rfkill && rfkill_blocked(dev->rfkill)) { |
112 | rc = -ERFKILL; | |
113 | goto error; | |
114 | } | |
115 | ||
8b3fe7b5 IE |
116 | if (!device_is_registered(&dev->dev)) { |
117 | rc = -ENODEV; | |
118 | goto error; | |
119 | } | |
120 | ||
9ea7187c | 121 | if (dev->fw_download_in_progress) { |
9674da87 EL |
122 | rc = -EBUSY; |
123 | goto error; | |
124 | } | |
125 | ||
8b3fe7b5 IE |
126 | if (dev->dev_up) { |
127 | rc = -EALREADY; | |
128 | goto error; | |
129 | } | |
130 | ||
131 | if (dev->ops->dev_up) | |
132 | rc = dev->ops->dev_up(dev); | |
133 | ||
134 | if (!rc) | |
135 | dev->dev_up = true; | |
136 | ||
0a946301 SO |
137 | /* We have to enable the device before discovering SEs */ |
138 | if (dev->ops->discover_se) { | |
139 | rc = dev->ops->discover_se(dev); | |
369f4d50 | 140 | if (rc) |
0a946301 SO |
141 | pr_warn("SE discovery failed\n"); |
142 | } | |
143 | ||
8b3fe7b5 IE |
144 | error: |
145 | device_unlock(&dev->dev); | |
146 | return rc; | |
147 | } | |
148 | ||
149 | /** | |
150 | * nfc_dev_down - turn off the NFC device | |
151 | * | |
152 | * @dev: The nfc device to be turned off | |
153 | */ | |
154 | int nfc_dev_down(struct nfc_dev *dev) | |
155 | { | |
156 | int rc = 0; | |
157 | ||
20c239c1 | 158 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
8b3fe7b5 IE |
159 | |
160 | device_lock(&dev->dev); | |
161 | ||
162 | if (!device_is_registered(&dev->dev)) { | |
163 | rc = -ENODEV; | |
164 | goto error; | |
165 | } | |
166 | ||
167 | if (!dev->dev_up) { | |
168 | rc = -EALREADY; | |
169 | goto error; | |
170 | } | |
171 | ||
90099433 | 172 | if (dev->polling || dev->active_target) { |
8b3fe7b5 IE |
173 | rc = -EBUSY; |
174 | goto error; | |
175 | } | |
176 | ||
177 | if (dev->ops->dev_down) | |
178 | dev->ops->dev_down(dev); | |
179 | ||
180 | dev->dev_up = false; | |
181 | ||
182 | error: | |
183 | device_unlock(&dev->dev); | |
184 | return rc; | |
185 | } | |
186 | ||
be055b2f SO |
187 | static int nfc_rfkill_set_block(void *data, bool blocked) |
188 | { | |
189 | struct nfc_dev *dev = data; | |
190 | ||
191 | pr_debug("%s blocked %d", dev_name(&dev->dev), blocked); | |
192 | ||
193 | if (!blocked) | |
194 | return 0; | |
195 | ||
196 | nfc_dev_down(dev); | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | static const struct rfkill_ops nfc_rfkill_ops = { | |
202 | .set_block = nfc_rfkill_set_block, | |
203 | }; | |
204 | ||
3e256b8f LRV |
205 | /** |
206 | * nfc_start_poll - start polling for nfc targets | |
207 | * | |
208 | * @dev: The nfc device that must start polling | |
209 | * @protocols: bitset of nfc protocols that must be used for polling | |
210 | * | |
211 | * The device remains polling for targets until a target is found or | |
212 | * the nfc_stop_poll function is called. | |
213 | */ | |
fe7c5800 | 214 | int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols) |
3e256b8f LRV |
215 | { |
216 | int rc; | |
217 | ||
fe7c5800 SO |
218 | pr_debug("dev_name %s initiator protocols 0x%x target protocols 0x%x\n", |
219 | dev_name(&dev->dev), im_protocols, tm_protocols); | |
3e256b8f | 220 | |
fe7c5800 | 221 | if (!im_protocols && !tm_protocols) |
3e256b8f LRV |
222 | return -EINVAL; |
223 | ||
224 | device_lock(&dev->dev); | |
225 | ||
226 | if (!device_is_registered(&dev->dev)) { | |
227 | rc = -ENODEV; | |
228 | goto error; | |
229 | } | |
230 | ||
7757dc8a SO |
231 | if (!dev->dev_up) { |
232 | rc = -ENODEV; | |
233 | goto error; | |
234 | } | |
235 | ||
3e256b8f LRV |
236 | if (dev->polling) { |
237 | rc = -EBUSY; | |
238 | goto error; | |
239 | } | |
240 | ||
fe7c5800 | 241 | rc = dev->ops->start_poll(dev, im_protocols, tm_protocols); |
f212ad5e | 242 | if (!rc) { |
3e256b8f | 243 | dev->polling = true; |
f212ad5e SO |
244 | dev->rf_mode = NFC_RF_NONE; |
245 | } | |
3e256b8f LRV |
246 | |
247 | error: | |
248 | device_unlock(&dev->dev); | |
249 | return rc; | |
250 | } | |
251 | ||
252 | /** | |
253 | * nfc_stop_poll - stop polling for nfc targets | |
254 | * | |
255 | * @dev: The nfc device that must stop polling | |
256 | */ | |
257 | int nfc_stop_poll(struct nfc_dev *dev) | |
258 | { | |
259 | int rc = 0; | |
260 | ||
20c239c1 | 261 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f LRV |
262 | |
263 | device_lock(&dev->dev); | |
264 | ||
265 | if (!device_is_registered(&dev->dev)) { | |
266 | rc = -ENODEV; | |
267 | goto error; | |
268 | } | |
269 | ||
270 | if (!dev->polling) { | |
271 | rc = -EINVAL; | |
272 | goto error; | |
273 | } | |
274 | ||
275 | dev->ops->stop_poll(dev); | |
276 | dev->polling = false; | |
5bcf099c | 277 | dev->rf_mode = NFC_RF_NONE; |
3e256b8f LRV |
278 | |
279 | error: | |
280 | device_unlock(&dev->dev); | |
281 | return rc; | |
282 | } | |
283 | ||
90099433 EL |
284 | static struct nfc_target *nfc_find_target(struct nfc_dev *dev, u32 target_idx) |
285 | { | |
286 | int i; | |
287 | ||
288 | if (dev->n_targets == 0) | |
289 | return NULL; | |
290 | ||
0f450772 | 291 | for (i = 0; i < dev->n_targets; i++) { |
90099433 EL |
292 | if (dev->targets[i].idx == target_idx) |
293 | return &dev->targets[i]; | |
294 | } | |
295 | ||
296 | return NULL; | |
297 | } | |
298 | ||
47807d3d | 299 | int nfc_dep_link_up(struct nfc_dev *dev, int target_index, u8 comm_mode) |
1ed28f61 SO |
300 | { |
301 | int rc = 0; | |
47807d3d SO |
302 | u8 *gb; |
303 | size_t gb_len; | |
90099433 | 304 | struct nfc_target *target; |
1ed28f61 | 305 | |
47807d3d | 306 | pr_debug("dev_name=%s comm %d\n", dev_name(&dev->dev), comm_mode); |
1ed28f61 SO |
307 | |
308 | if (!dev->ops->dep_link_up) | |
309 | return -EOPNOTSUPP; | |
310 | ||
311 | device_lock(&dev->dev); | |
312 | ||
313 | if (!device_is_registered(&dev->dev)) { | |
314 | rc = -ENODEV; | |
315 | goto error; | |
316 | } | |
317 | ||
318 | if (dev->dep_link_up == true) { | |
319 | rc = -EALREADY; | |
320 | goto error; | |
321 | } | |
322 | ||
47807d3d SO |
323 | gb = nfc_llcp_general_bytes(dev, &gb_len); |
324 | if (gb_len > NFC_MAX_GT_LEN) { | |
325 | rc = -EINVAL; | |
326 | goto error; | |
327 | } | |
328 | ||
90099433 EL |
329 | target = nfc_find_target(dev, target_index); |
330 | if (target == NULL) { | |
331 | rc = -ENOTCONN; | |
332 | goto error; | |
333 | } | |
334 | ||
335 | rc = dev->ops->dep_link_up(dev, target, comm_mode, gb, gb_len); | |
f212ad5e | 336 | if (!rc) { |
90099433 | 337 | dev->active_target = target; |
f212ad5e SO |
338 | dev->rf_mode = NFC_RF_INITIATOR; |
339 | } | |
1ed28f61 SO |
340 | |
341 | error: | |
342 | device_unlock(&dev->dev); | |
343 | return rc; | |
344 | } | |
345 | ||
346 | int nfc_dep_link_down(struct nfc_dev *dev) | |
347 | { | |
348 | int rc = 0; | |
349 | ||
350 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); | |
351 | ||
352 | if (!dev->ops->dep_link_down) | |
353 | return -EOPNOTSUPP; | |
354 | ||
355 | device_lock(&dev->dev); | |
356 | ||
357 | if (!device_is_registered(&dev->dev)) { | |
358 | rc = -ENODEV; | |
359 | goto error; | |
360 | } | |
361 | ||
362 | if (dev->dep_link_up == false) { | |
363 | rc = -EALREADY; | |
364 | goto error; | |
365 | } | |
366 | ||
1ed28f61 SO |
367 | rc = dev->ops->dep_link_down(dev); |
368 | if (!rc) { | |
369 | dev->dep_link_up = false; | |
90099433 | 370 | dev->active_target = NULL; |
5bcf099c | 371 | dev->rf_mode = NFC_RF_NONE; |
d646960f | 372 | nfc_llcp_mac_is_down(dev); |
1ed28f61 SO |
373 | nfc_genl_dep_link_down_event(dev); |
374 | } | |
375 | ||
376 | error: | |
377 | device_unlock(&dev->dev); | |
5bcf099c | 378 | |
1ed28f61 SO |
379 | return rc; |
380 | } | |
381 | ||
382 | int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx, | |
0a40acb2 | 383 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
384 | { |
385 | dev->dep_link_up = true; | |
1ed28f61 | 386 | |
d646960f SO |
387 | nfc_llcp_mac_is_up(dev, target_idx, comm_mode, rf_mode); |
388 | ||
1ed28f61 SO |
389 | return nfc_genl_dep_link_up_event(dev, target_idx, comm_mode, rf_mode); |
390 | } | |
391 | EXPORT_SYMBOL(nfc_dep_link_is_up); | |
392 | ||
3e256b8f LRV |
393 | /** |
394 | * nfc_activate_target - prepare the target for data exchange | |
395 | * | |
396 | * @dev: The nfc device that found the target | |
397 | * @target_idx: index of the target that must be activated | |
398 | * @protocol: nfc protocol that will be used for data exchange | |
399 | */ | |
400 | int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol) | |
401 | { | |
402 | int rc; | |
90099433 | 403 | struct nfc_target *target; |
3e256b8f | 404 | |
20c239c1 JP |
405 | pr_debug("dev_name=%s target_idx=%u protocol=%u\n", |
406 | dev_name(&dev->dev), target_idx, protocol); | |
3e256b8f LRV |
407 | |
408 | device_lock(&dev->dev); | |
409 | ||
410 | if (!device_is_registered(&dev->dev)) { | |
411 | rc = -ENODEV; | |
412 | goto error; | |
413 | } | |
414 | ||
90099433 EL |
415 | if (dev->active_target) { |
416 | rc = -EBUSY; | |
417 | goto error; | |
418 | } | |
419 | ||
420 | target = nfc_find_target(dev, target_idx); | |
421 | if (target == NULL) { | |
422 | rc = -ENOTCONN; | |
423 | goto error; | |
424 | } | |
425 | ||
426 | rc = dev->ops->activate_target(dev, target, protocol); | |
c8d56ae7 | 427 | if (!rc) { |
90099433 | 428 | dev->active_target = target; |
f212ad5e | 429 | dev->rf_mode = NFC_RF_INITIATOR; |
3e256b8f | 430 | |
f0c91038 | 431 | if (dev->ops->check_presence && !dev->shutting_down) |
c8d56ae7 EL |
432 | mod_timer(&dev->check_pres_timer, jiffies + |
433 | msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS)); | |
434 | } | |
3e256b8f LRV |
435 | |
436 | error: | |
437 | device_unlock(&dev->dev); | |
438 | return rc; | |
439 | } | |
440 | ||
441 | /** | |
442 | * nfc_deactivate_target - deactivate a nfc target | |
443 | * | |
444 | * @dev: The nfc device that found the target | |
445 | * @target_idx: index of the target that must be deactivated | |
446 | */ | |
447 | int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx) | |
448 | { | |
449 | int rc = 0; | |
450 | ||
20c239c1 JP |
451 | pr_debug("dev_name=%s target_idx=%u\n", |
452 | dev_name(&dev->dev), target_idx); | |
3e256b8f LRV |
453 | |
454 | device_lock(&dev->dev); | |
455 | ||
456 | if (!device_is_registered(&dev->dev)) { | |
457 | rc = -ENODEV; | |
458 | goto error; | |
459 | } | |
460 | ||
90099433 EL |
461 | if (dev->active_target == NULL) { |
462 | rc = -ENOTCONN; | |
463 | goto error; | |
464 | } | |
465 | ||
466 | if (dev->active_target->idx != target_idx) { | |
467 | rc = -ENOTCONN; | |
468 | goto error; | |
469 | } | |
470 | ||
c8d56ae7 EL |
471 | if (dev->ops->check_presence) |
472 | del_timer_sync(&dev->check_pres_timer); | |
473 | ||
90099433 EL |
474 | dev->ops->deactivate_target(dev, dev->active_target); |
475 | dev->active_target = NULL; | |
3e256b8f LRV |
476 | |
477 | error: | |
478 | device_unlock(&dev->dev); | |
479 | return rc; | |
480 | } | |
481 | ||
482 | /** | |
483 | * nfc_data_exchange - transceive data | |
484 | * | |
485 | * @dev: The nfc device that found the target | |
486 | * @target_idx: index of the target | |
487 | * @skb: data to be sent | |
488 | * @cb: callback called when the response is received | |
489 | * @cb_context: parameter for the callback function | |
490 | * | |
491 | * The user must wait for the callback before calling this function again. | |
492 | */ | |
0a40acb2 SO |
493 | int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb, |
494 | data_exchange_cb_t cb, void *cb_context) | |
3e256b8f LRV |
495 | { |
496 | int rc; | |
497 | ||
20c239c1 JP |
498 | pr_debug("dev_name=%s target_idx=%u skb->len=%u\n", |
499 | dev_name(&dev->dev), target_idx, skb->len); | |
3e256b8f LRV |
500 | |
501 | device_lock(&dev->dev); | |
502 | ||
503 | if (!device_is_registered(&dev->dev)) { | |
504 | rc = -ENODEV; | |
505 | kfree_skb(skb); | |
506 | goto error; | |
507 | } | |
508 | ||
be9ae4ce SO |
509 | if (dev->rf_mode == NFC_RF_INITIATOR && dev->active_target != NULL) { |
510 | if (dev->active_target->idx != target_idx) { | |
511 | rc = -EADDRNOTAVAIL; | |
512 | kfree_skb(skb); | |
513 | goto error; | |
514 | } | |
144612ca | 515 | |
be9ae4ce SO |
516 | if (dev->ops->check_presence) |
517 | del_timer_sync(&dev->check_pres_timer); | |
518 | ||
519 | rc = dev->ops->im_transceive(dev, dev->active_target, skb, cb, | |
520 | cb_context); | |
521 | ||
f0c91038 | 522 | if (!rc && dev->ops->check_presence && !dev->shutting_down) |
be9ae4ce SO |
523 | mod_timer(&dev->check_pres_timer, jiffies + |
524 | msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS)); | |
525 | } else if (dev->rf_mode == NFC_RF_TARGET && dev->ops->tm_send != NULL) { | |
526 | rc = dev->ops->tm_send(dev, skb); | |
527 | } else { | |
528 | rc = -ENOTCONN; | |
144612ca EL |
529 | kfree_skb(skb); |
530 | goto error; | |
531 | } | |
532 | ||
c8d56ae7 | 533 | |
3e256b8f LRV |
534 | error: |
535 | device_unlock(&dev->dev); | |
536 | return rc; | |
537 | } | |
538 | ||
c531c9ec SO |
539 | static struct nfc_se *find_se(struct nfc_dev *dev, u32 se_idx) |
540 | { | |
541 | struct nfc_se *se, *n; | |
542 | ||
543 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) | |
544 | if (se->idx == se_idx) | |
545 | return se; | |
546 | ||
547 | return NULL; | |
548 | } | |
549 | ||
550 | int nfc_enable_se(struct nfc_dev *dev, u32 se_idx) | |
551 | { | |
552 | ||
553 | struct nfc_se *se; | |
554 | int rc; | |
555 | ||
556 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
557 | ||
558 | device_lock(&dev->dev); | |
559 | ||
560 | if (!device_is_registered(&dev->dev)) { | |
561 | rc = -ENODEV; | |
562 | goto error; | |
563 | } | |
564 | ||
565 | if (!dev->dev_up) { | |
566 | rc = -ENODEV; | |
567 | goto error; | |
568 | } | |
569 | ||
570 | if (dev->polling) { | |
571 | rc = -EBUSY; | |
572 | goto error; | |
573 | } | |
574 | ||
575 | if (!dev->ops->enable_se || !dev->ops->disable_se) { | |
576 | rc = -EOPNOTSUPP; | |
577 | goto error; | |
578 | } | |
579 | ||
580 | se = find_se(dev, se_idx); | |
581 | if (!se) { | |
582 | rc = -EINVAL; | |
583 | goto error; | |
584 | } | |
585 | ||
2c383283 | 586 | if (se->state == NFC_SE_ENABLED) { |
c531c9ec SO |
587 | rc = -EALREADY; |
588 | goto error; | |
589 | } | |
590 | ||
591 | rc = dev->ops->enable_se(dev, se_idx); | |
39525ee1 AW |
592 | if (rc >= 0) |
593 | se->state = NFC_SE_ENABLED; | |
c531c9ec SO |
594 | |
595 | error: | |
596 | device_unlock(&dev->dev); | |
597 | return rc; | |
598 | } | |
599 | ||
600 | int nfc_disable_se(struct nfc_dev *dev, u32 se_idx) | |
601 | { | |
602 | ||
603 | struct nfc_se *se; | |
604 | int rc; | |
605 | ||
606 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
607 | ||
608 | device_lock(&dev->dev); | |
609 | ||
610 | if (!device_is_registered(&dev->dev)) { | |
611 | rc = -ENODEV; | |
612 | goto error; | |
613 | } | |
614 | ||
615 | if (!dev->dev_up) { | |
616 | rc = -ENODEV; | |
617 | goto error; | |
618 | } | |
619 | ||
620 | if (!dev->ops->enable_se || !dev->ops->disable_se) { | |
621 | rc = -EOPNOTSUPP; | |
622 | goto error; | |
623 | } | |
624 | ||
625 | se = find_se(dev, se_idx); | |
626 | if (!se) { | |
627 | rc = -EINVAL; | |
628 | goto error; | |
629 | } | |
630 | ||
2c383283 | 631 | if (se->state == NFC_SE_DISABLED) { |
c531c9ec SO |
632 | rc = -EALREADY; |
633 | goto error; | |
634 | } | |
635 | ||
636 | rc = dev->ops->disable_se(dev, se_idx); | |
39525ee1 AW |
637 | if (rc >= 0) |
638 | se->state = NFC_SE_DISABLED; | |
c531c9ec SO |
639 | |
640 | error: | |
641 | device_unlock(&dev->dev); | |
642 | return rc; | |
643 | } | |
644 | ||
541d920b SO |
645 | int nfc_set_remote_general_bytes(struct nfc_dev *dev, u8 *gb, u8 gb_len) |
646 | { | |
0a40acb2 | 647 | pr_debug("dev_name=%s gb_len=%d\n", dev_name(&dev->dev), gb_len); |
541d920b SO |
648 | |
649 | if (gb_len > NFC_MAX_GT_LEN) | |
650 | return -EINVAL; | |
651 | ||
d646960f | 652 | return nfc_llcp_set_remote_gb(dev, gb, gb_len); |
541d920b SO |
653 | } |
654 | EXPORT_SYMBOL(nfc_set_remote_general_bytes); | |
655 | ||
ab73b751 SO |
656 | u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, size_t *gb_len) |
657 | { | |
658 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); | |
659 | ||
660 | return nfc_llcp_general_bytes(dev, gb_len); | |
661 | } | |
662 | EXPORT_SYMBOL(nfc_get_local_general_bytes); | |
663 | ||
73167ced SO |
664 | int nfc_tm_data_received(struct nfc_dev *dev, struct sk_buff *skb) |
665 | { | |
666 | /* Only LLCP target mode for now */ | |
667 | if (dev->dep_link_up == false) { | |
668 | kfree_skb(skb); | |
669 | return -ENOLINK; | |
670 | } | |
671 | ||
672 | return nfc_llcp_data_received(dev, skb); | |
673 | } | |
674 | EXPORT_SYMBOL(nfc_tm_data_received); | |
675 | ||
fc40a8c1 SO |
676 | int nfc_tm_activated(struct nfc_dev *dev, u32 protocol, u8 comm_mode, |
677 | u8 *gb, size_t gb_len) | |
678 | { | |
679 | int rc; | |
680 | ||
681 | device_lock(&dev->dev); | |
682 | ||
683 | dev->polling = false; | |
684 | ||
685 | if (gb != NULL) { | |
686 | rc = nfc_set_remote_general_bytes(dev, gb, gb_len); | |
687 | if (rc < 0) | |
688 | goto out; | |
689 | } | |
690 | ||
f212ad5e SO |
691 | dev->rf_mode = NFC_RF_TARGET; |
692 | ||
fc40a8c1 SO |
693 | if (protocol == NFC_PROTO_NFC_DEP_MASK) |
694 | nfc_dep_link_is_up(dev, 0, comm_mode, NFC_RF_TARGET); | |
695 | ||
696 | rc = nfc_genl_tm_activated(dev, protocol); | |
697 | ||
698 | out: | |
699 | device_unlock(&dev->dev); | |
700 | ||
701 | return rc; | |
702 | } | |
703 | EXPORT_SYMBOL(nfc_tm_activated); | |
704 | ||
705 | int nfc_tm_deactivated(struct nfc_dev *dev) | |
706 | { | |
707 | dev->dep_link_up = false; | |
5bcf099c | 708 | dev->rf_mode = NFC_RF_NONE; |
fc40a8c1 SO |
709 | |
710 | return nfc_genl_tm_deactivated(dev); | |
711 | } | |
712 | EXPORT_SYMBOL(nfc_tm_deactivated); | |
713 | ||
3e256b8f | 714 | /** |
7c7cd3bf | 715 | * nfc_alloc_send_skb - allocate a skb for data exchange responses |
3e256b8f LRV |
716 | * |
717 | * @size: size to allocate | |
718 | * @gfp: gfp flags | |
719 | */ | |
7c7cd3bf | 720 | struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk, |
0a40acb2 SO |
721 | unsigned int flags, unsigned int size, |
722 | unsigned int *err) | |
7c7cd3bf SO |
723 | { |
724 | struct sk_buff *skb; | |
725 | unsigned int total_size; | |
726 | ||
727 | total_size = size + | |
728 | dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE; | |
729 | ||
730 | skb = sock_alloc_send_skb(sk, total_size, flags & MSG_DONTWAIT, err); | |
731 | if (skb) | |
732 | skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE); | |
733 | ||
734 | return skb; | |
735 | } | |
736 | ||
737 | /** | |
738 | * nfc_alloc_recv_skb - allocate a skb for data exchange responses | |
739 | * | |
740 | * @size: size to allocate | |
741 | * @gfp: gfp flags | |
742 | */ | |
743 | struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp) | |
3e256b8f LRV |
744 | { |
745 | struct sk_buff *skb; | |
746 | unsigned int total_size; | |
747 | ||
748 | total_size = size + 1; | |
749 | skb = alloc_skb(total_size, gfp); | |
750 | ||
751 | if (skb) | |
752 | skb_reserve(skb, 1); | |
753 | ||
754 | return skb; | |
755 | } | |
7c7cd3bf | 756 | EXPORT_SYMBOL(nfc_alloc_recv_skb); |
3e256b8f | 757 | |
4d12b8b1 LRV |
758 | /** |
759 | * nfc_targets_found - inform that targets were found | |
760 | * | |
761 | * @dev: The nfc device that found the targets | |
762 | * @targets: array of nfc targets found | |
763 | * @ntargets: targets array size | |
764 | * | |
765 | * The device driver must call this function when one or many nfc targets | |
766 | * are found. After calling this function, the device driver must stop | |
767 | * polling for targets. | |
d94f9c55 EL |
768 | * NOTE: This function can be called with targets=NULL and n_targets=0 to |
769 | * notify a driver error, meaning that the polling operation cannot complete. | |
d4ccb132 EL |
770 | * IMPORTANT: this function must not be called from an atomic context. |
771 | * In addition, it must also not be called from a context that would prevent | |
772 | * the NFC Core to call other nfc ops entry point concurrently. | |
4d12b8b1 | 773 | */ |
0a40acb2 SO |
774 | int nfc_targets_found(struct nfc_dev *dev, |
775 | struct nfc_target *targets, int n_targets) | |
4d12b8b1 | 776 | { |
c4fbb651 SO |
777 | int i; |
778 | ||
20c239c1 | 779 | pr_debug("dev_name=%s n_targets=%d\n", dev_name(&dev->dev), n_targets); |
4d12b8b1 | 780 | |
c4fbb651 | 781 | for (i = 0; i < n_targets; i++) |
01ae0eea | 782 | targets[i].idx = dev->target_next_idx++; |
c4fbb651 | 783 | |
d4ccb132 | 784 | device_lock(&dev->dev); |
4d12b8b1 | 785 | |
8668fdd6 EL |
786 | if (dev->polling == false) { |
787 | device_unlock(&dev->dev); | |
788 | return 0; | |
789 | } | |
790 | ||
791 | dev->polling = false; | |
792 | ||
4d12b8b1 LRV |
793 | dev->targets_generation++; |
794 | ||
795 | kfree(dev->targets); | |
d94f9c55 | 796 | dev->targets = NULL; |
4d12b8b1 | 797 | |
d94f9c55 EL |
798 | if (targets) { |
799 | dev->targets = kmemdup(targets, | |
800 | n_targets * sizeof(struct nfc_target), | |
801 | GFP_ATOMIC); | |
802 | ||
803 | if (!dev->targets) { | |
804 | dev->n_targets = 0; | |
805 | device_unlock(&dev->dev); | |
806 | return -ENOMEM; | |
807 | } | |
4d12b8b1 LRV |
808 | } |
809 | ||
810 | dev->n_targets = n_targets; | |
d4ccb132 | 811 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
812 | |
813 | nfc_genl_targets_found(dev); | |
814 | ||
815 | return 0; | |
816 | } | |
817 | EXPORT_SYMBOL(nfc_targets_found); | |
818 | ||
d4ccb132 EL |
819 | /** |
820 | * nfc_target_lost - inform that an activated target went out of field | |
821 | * | |
822 | * @dev: The nfc device that had the activated target in field | |
823 | * @target_idx: the nfc index of the target | |
824 | * | |
825 | * The device driver must call this function when the activated target | |
826 | * goes out of the field. | |
827 | * IMPORTANT: this function must not be called from an atomic context. | |
828 | * In addition, it must also not be called from a context that would prevent | |
829 | * the NFC Core to call other nfc ops entry point concurrently. | |
830 | */ | |
e1da0efa EL |
831 | int nfc_target_lost(struct nfc_dev *dev, u32 target_idx) |
832 | { | |
833 | struct nfc_target *tg; | |
834 | int i; | |
835 | ||
836 | pr_debug("dev_name %s n_target %d\n", dev_name(&dev->dev), target_idx); | |
837 | ||
d4ccb132 | 838 | device_lock(&dev->dev); |
e1da0efa EL |
839 | |
840 | for (i = 0; i < dev->n_targets; i++) { | |
841 | tg = &dev->targets[i]; | |
842 | if (tg->idx == target_idx) | |
843 | break; | |
844 | } | |
845 | ||
846 | if (i == dev->n_targets) { | |
d4ccb132 | 847 | device_unlock(&dev->dev); |
e1da0efa EL |
848 | return -EINVAL; |
849 | } | |
850 | ||
851 | dev->targets_generation++; | |
852 | dev->n_targets--; | |
90099433 | 853 | dev->active_target = NULL; |
e1da0efa EL |
854 | |
855 | if (dev->n_targets) { | |
856 | memcpy(&dev->targets[i], &dev->targets[i + 1], | |
857 | (dev->n_targets - i) * sizeof(struct nfc_target)); | |
858 | } else { | |
859 | kfree(dev->targets); | |
860 | dev->targets = NULL; | |
861 | } | |
862 | ||
d4ccb132 | 863 | device_unlock(&dev->dev); |
e1da0efa EL |
864 | |
865 | nfc_genl_target_lost(dev, target_idx); | |
866 | ||
867 | return 0; | |
868 | } | |
869 | EXPORT_SYMBOL(nfc_target_lost); | |
870 | ||
9eb334ac | 871 | inline void nfc_driver_failure(struct nfc_dev *dev, int err) |
456411ca | 872 | { |
9eb334ac | 873 | nfc_targets_found(dev, NULL, 0); |
456411ca EL |
874 | } |
875 | EXPORT_SYMBOL(nfc_driver_failure); | |
876 | ||
fed7c25e SO |
877 | int nfc_add_se(struct nfc_dev *dev, u32 se_idx, u16 type) |
878 | { | |
c531c9ec | 879 | struct nfc_se *se; |
2757c372 | 880 | int rc; |
fed7c25e SO |
881 | |
882 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
883 | ||
c531c9ec SO |
884 | se = find_se(dev, se_idx); |
885 | if (se) | |
886 | return -EALREADY; | |
fed7c25e SO |
887 | |
888 | se = kzalloc(sizeof(struct nfc_se), GFP_KERNEL); | |
889 | if (!se) | |
890 | return -ENOMEM; | |
891 | ||
892 | se->idx = se_idx; | |
893 | se->type = type; | |
894 | se->state = NFC_SE_DISABLED; | |
895 | INIT_LIST_HEAD(&se->list); | |
896 | ||
897 | list_add(&se->list, &dev->secure_elements); | |
898 | ||
2757c372 SO |
899 | rc = nfc_genl_se_added(dev, se_idx, type); |
900 | if (rc < 0) { | |
901 | list_del(&se->list); | |
902 | kfree(se); | |
903 | ||
904 | return rc; | |
905 | } | |
906 | ||
fed7c25e SO |
907 | return 0; |
908 | } | |
909 | EXPORT_SYMBOL(nfc_add_se); | |
910 | ||
911 | int nfc_remove_se(struct nfc_dev *dev, u32 se_idx) | |
912 | { | |
913 | struct nfc_se *se, *n; | |
2757c372 | 914 | int rc; |
fed7c25e SO |
915 | |
916 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
917 | ||
918 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) | |
919 | if (se->idx == se_idx) { | |
2757c372 SO |
920 | rc = nfc_genl_se_removed(dev, se_idx); |
921 | if (rc < 0) | |
922 | return rc; | |
923 | ||
fed7c25e SO |
924 | list_del(&se->list); |
925 | kfree(se); | |
926 | ||
927 | return 0; | |
928 | } | |
929 | ||
930 | return -EINVAL; | |
931 | } | |
932 | EXPORT_SYMBOL(nfc_remove_se); | |
933 | ||
3e256b8f LRV |
934 | static void nfc_release(struct device *d) |
935 | { | |
936 | struct nfc_dev *dev = to_nfc_dev(d); | |
ee656e9d | 937 | struct nfc_se *se, *n; |
3e256b8f | 938 | |
20c239c1 | 939 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f | 940 | |
4d12b8b1 LRV |
941 | nfc_genl_data_exit(&dev->genl_data); |
942 | kfree(dev->targets); | |
ee656e9d SO |
943 | |
944 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
945 | nfc_genl_se_removed(dev, se->idx); | |
946 | list_del(&se->list); | |
947 | kfree(se); | |
948 | } | |
949 | ||
3e256b8f LRV |
950 | kfree(dev); |
951 | } | |
952 | ||
c8d56ae7 EL |
953 | static void nfc_check_pres_work(struct work_struct *work) |
954 | { | |
955 | struct nfc_dev *dev = container_of(work, struct nfc_dev, | |
956 | check_pres_work); | |
957 | int rc; | |
958 | ||
959 | device_lock(&dev->dev); | |
960 | ||
90099433 EL |
961 | if (dev->active_target && timer_pending(&dev->check_pres_timer) == 0) { |
962 | rc = dev->ops->check_presence(dev, dev->active_target); | |
632c016a EL |
963 | if (rc == -EOPNOTSUPP) |
964 | goto exit; | |
f0c91038 | 965 | if (rc) { |
d4ccb132 EL |
966 | u32 active_target_idx = dev->active_target->idx; |
967 | device_unlock(&dev->dev); | |
968 | nfc_target_lost(dev, active_target_idx); | |
969 | return; | |
c8d56ae7 | 970 | } |
f0c91038 EL |
971 | |
972 | if (!dev->shutting_down) | |
973 | mod_timer(&dev->check_pres_timer, jiffies + | |
974 | msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS)); | |
c8d56ae7 EL |
975 | } |
976 | ||
632c016a | 977 | exit: |
c8d56ae7 EL |
978 | device_unlock(&dev->dev); |
979 | } | |
980 | ||
981 | static void nfc_check_pres_timeout(unsigned long data) | |
982 | { | |
983 | struct nfc_dev *dev = (struct nfc_dev *)data; | |
984 | ||
916082b0 | 985 | schedule_work(&dev->check_pres_work); |
c8d56ae7 EL |
986 | } |
987 | ||
3e256b8f LRV |
988 | struct class nfc_class = { |
989 | .name = "nfc", | |
990 | .dev_release = nfc_release, | |
991 | }; | |
992 | EXPORT_SYMBOL(nfc_class); | |
993 | ||
9f3b795a | 994 | static int match_idx(struct device *d, const void *data) |
3e256b8f LRV |
995 | { |
996 | struct nfc_dev *dev = to_nfc_dev(d); | |
9f3b795a | 997 | const unsigned int *idx = data; |
3e256b8f LRV |
998 | |
999 | return dev->idx == *idx; | |
1000 | } | |
1001 | ||
95c96174 | 1002 | struct nfc_dev *nfc_get_device(unsigned int idx) |
3e256b8f LRV |
1003 | { |
1004 | struct device *d; | |
1005 | ||
1006 | d = class_find_device(&nfc_class, NULL, &idx, match_idx); | |
1007 | if (!d) | |
1008 | return NULL; | |
1009 | ||
1010 | return to_nfc_dev(d); | |
1011 | } | |
1012 | ||
1013 | /** | |
1014 | * nfc_allocate_device - allocate a new nfc device | |
1015 | * | |
1016 | * @ops: device operations | |
1017 | * @supported_protocols: NFC protocols supported by the device | |
1018 | */ | |
1019 | struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, | |
0a40acb2 SO |
1020 | u32 supported_protocols, |
1021 | int tx_headroom, int tx_tailroom) | |
3e256b8f | 1022 | { |
3e256b8f LRV |
1023 | struct nfc_dev *dev; |
1024 | ||
1025 | if (!ops->start_poll || !ops->stop_poll || !ops->activate_target || | |
be9ae4ce | 1026 | !ops->deactivate_target || !ops->im_transceive) |
3e256b8f LRV |
1027 | return NULL; |
1028 | ||
1029 | if (!supported_protocols) | |
1030 | return NULL; | |
1031 | ||
1032 | dev = kzalloc(sizeof(struct nfc_dev), GFP_KERNEL); | |
1033 | if (!dev) | |
1034 | return NULL; | |
1035 | ||
3e256b8f LRV |
1036 | dev->ops = ops; |
1037 | dev->supported_protocols = supported_protocols; | |
e8753043 SO |
1038 | dev->tx_headroom = tx_headroom; |
1039 | dev->tx_tailroom = tx_tailroom; | |
fed7c25e | 1040 | INIT_LIST_HEAD(&dev->secure_elements); |
3e256b8f | 1041 | |
4d12b8b1 LRV |
1042 | nfc_genl_data_init(&dev->genl_data); |
1043 | ||
5bcf099c | 1044 | dev->rf_mode = NFC_RF_NONE; |
d4ccb132 | 1045 | |
4d12b8b1 LRV |
1046 | /* first generation must not be 0 */ |
1047 | dev->targets_generation = 1; | |
1048 | ||
c8d56ae7 | 1049 | if (ops->check_presence) { |
c8d56ae7 EL |
1050 | init_timer(&dev->check_pres_timer); |
1051 | dev->check_pres_timer.data = (unsigned long)dev; | |
1052 | dev->check_pres_timer.function = nfc_check_pres_timeout; | |
1053 | ||
1054 | INIT_WORK(&dev->check_pres_work, nfc_check_pres_work); | |
c8d56ae7 EL |
1055 | } |
1056 | ||
3e256b8f LRV |
1057 | return dev; |
1058 | } | |
1059 | EXPORT_SYMBOL(nfc_allocate_device); | |
1060 | ||
1061 | /** | |
1062 | * nfc_register_device - register a nfc device in the nfc subsystem | |
1063 | * | |
1064 | * @dev: The nfc device to register | |
1065 | */ | |
1066 | int nfc_register_device(struct nfc_dev *dev) | |
1067 | { | |
1068 | int rc; | |
1069 | ||
20c239c1 | 1070 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f | 1071 | |
7eda8b8e SO |
1072 | dev->idx = ida_simple_get(&nfc_index_ida, 0, 0, GFP_KERNEL); |
1073 | if (dev->idx < 0) | |
1074 | return dev->idx; | |
1075 | ||
1076 | dev->dev.class = &nfc_class; | |
1077 | dev_set_name(&dev->dev, "nfc%d", dev->idx); | |
1078 | device_initialize(&dev->dev); | |
1079 | ||
3e256b8f LRV |
1080 | mutex_lock(&nfc_devlist_mutex); |
1081 | nfc_devlist_generation++; | |
1082 | rc = device_add(&dev->dev); | |
1083 | mutex_unlock(&nfc_devlist_mutex); | |
1084 | ||
4d12b8b1 LRV |
1085 | if (rc < 0) |
1086 | return rc; | |
1087 | ||
d646960f SO |
1088 | rc = nfc_llcp_register_device(dev); |
1089 | if (rc) | |
1090 | pr_err("Could not register llcp device\n"); | |
1091 | ||
4d12b8b1 LRV |
1092 | rc = nfc_genl_device_added(dev); |
1093 | if (rc) | |
20c239c1 JP |
1094 | pr_debug("The userspace won't be notified that the device %s was added\n", |
1095 | dev_name(&dev->dev)); | |
4d12b8b1 | 1096 | |
be055b2f SO |
1097 | dev->rfkill = rfkill_alloc(dev_name(&dev->dev), &dev->dev, |
1098 | RFKILL_TYPE_NFC, &nfc_rfkill_ops, dev); | |
1099 | if (dev->rfkill) { | |
1100 | if (rfkill_register(dev->rfkill) < 0) { | |
1101 | rfkill_destroy(dev->rfkill); | |
1102 | dev->rfkill = NULL; | |
1103 | } | |
1104 | } | |
1105 | ||
4d12b8b1 | 1106 | return 0; |
3e256b8f LRV |
1107 | } |
1108 | EXPORT_SYMBOL(nfc_register_device); | |
1109 | ||
1110 | /** | |
1111 | * nfc_unregister_device - unregister a nfc device in the nfc subsystem | |
1112 | * | |
1113 | * @dev: The nfc device to unregister | |
1114 | */ | |
1115 | void nfc_unregister_device(struct nfc_dev *dev) | |
1116 | { | |
7eda8b8e | 1117 | int rc, id; |
4d12b8b1 | 1118 | |
20c239c1 | 1119 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f | 1120 | |
7eda8b8e SO |
1121 | id = dev->idx; |
1122 | ||
be055b2f SO |
1123 | if (dev->rfkill) { |
1124 | rfkill_unregister(dev->rfkill); | |
1125 | rfkill_destroy(dev->rfkill); | |
1126 | } | |
1127 | ||
f0c91038 EL |
1128 | if (dev->ops->check_presence) { |
1129 | device_lock(&dev->dev); | |
1130 | dev->shutting_down = true; | |
1131 | device_unlock(&dev->dev); | |
1132 | del_timer_sync(&dev->check_pres_timer); | |
1133 | cancel_work_sync(&dev->check_pres_work); | |
1134 | } | |
3e256b8f | 1135 | |
f0c91038 EL |
1136 | rc = nfc_genl_device_removed(dev); |
1137 | if (rc) | |
1138 | pr_debug("The userspace won't be notified that the device %s " | |
1139 | "was removed\n", dev_name(&dev->dev)); | |
4d12b8b1 | 1140 | |
d646960f SO |
1141 | nfc_llcp_unregister_device(dev); |
1142 | ||
f0c91038 EL |
1143 | mutex_lock(&nfc_devlist_mutex); |
1144 | nfc_devlist_generation++; | |
1145 | device_del(&dev->dev); | |
1146 | mutex_unlock(&nfc_devlist_mutex); | |
4d12b8b1 | 1147 | |
7eda8b8e | 1148 | ida_simple_remove(&nfc_index_ida, id); |
3e256b8f LRV |
1149 | } |
1150 | EXPORT_SYMBOL(nfc_unregister_device); | |
1151 | ||
1152 | static int __init nfc_init(void) | |
1153 | { | |
4d12b8b1 LRV |
1154 | int rc; |
1155 | ||
ed1e0ad8 | 1156 | pr_info("NFC Core ver %s\n", VERSION); |
3e256b8f | 1157 | |
4d12b8b1 LRV |
1158 | rc = class_register(&nfc_class); |
1159 | if (rc) | |
1160 | return rc; | |
1161 | ||
1162 | rc = nfc_genl_init(); | |
1163 | if (rc) | |
1164 | goto err_genl; | |
1165 | ||
1166 | /* the first generation must not be 0 */ | |
1167 | nfc_devlist_generation = 1; | |
1168 | ||
23b7869c LRV |
1169 | rc = rawsock_init(); |
1170 | if (rc) | |
1171 | goto err_rawsock; | |
1172 | ||
d646960f SO |
1173 | rc = nfc_llcp_init(); |
1174 | if (rc) | |
1175 | goto err_llcp_sock; | |
1176 | ||
c7fe3b52 AAJ |
1177 | rc = af_nfc_init(); |
1178 | if (rc) | |
1179 | goto err_af_nfc; | |
1180 | ||
4d12b8b1 LRV |
1181 | return 0; |
1182 | ||
c7fe3b52 | 1183 | err_af_nfc: |
d646960f SO |
1184 | nfc_llcp_exit(); |
1185 | err_llcp_sock: | |
23b7869c LRV |
1186 | rawsock_exit(); |
1187 | err_rawsock: | |
c7fe3b52 | 1188 | nfc_genl_exit(); |
4d12b8b1 LRV |
1189 | err_genl: |
1190 | class_unregister(&nfc_class); | |
1191 | return rc; | |
3e256b8f LRV |
1192 | } |
1193 | ||
1194 | static void __exit nfc_exit(void) | |
1195 | { | |
c7fe3b52 | 1196 | af_nfc_exit(); |
d646960f | 1197 | nfc_llcp_exit(); |
23b7869c | 1198 | rawsock_exit(); |
4d12b8b1 | 1199 | nfc_genl_exit(); |
3e256b8f LRV |
1200 | class_unregister(&nfc_class); |
1201 | } | |
1202 | ||
1203 | subsys_initcall(nfc_init); | |
1204 | module_exit(nfc_exit); | |
1205 | ||
1206 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>"); | |
1207 | MODULE_DESCRIPTION("NFC Core ver " VERSION); | |
1208 | MODULE_VERSION(VERSION); | |
1209 | MODULE_LICENSE("GPL"); | |
1155bb61 | 1210 | MODULE_ALIAS_NETPROTO(PF_NFC); |
5df16cad | 1211 | MODULE_ALIAS_GENL_FAMILY(NFC_GENL_NAME); |