Commit | Line | Data |
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8b8d2e08 EL |
1 | /* |
2 | * Copyright (C) 2012 Intel Corporation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
98b32dec | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
8b8d2e08 EL |
16 | */ |
17 | ||
18 | #define pr_fmt(fmt) "hci: %s: " fmt, __func__ | |
19 | ||
20 | #include <linux/init.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/module.h> | |
23 | #include <linux/nfc.h> | |
24 | ||
25 | #include <net/nfc/nfc.h> | |
26 | #include <net/nfc/hci.h> | |
67cccfe1 | 27 | #include <net/nfc/llc.h> |
8b8d2e08 EL |
28 | |
29 | #include "hci.h" | |
30 | ||
31 | /* Largest headroom needed for outgoing HCI commands */ | |
32 | #define HCI_CMDS_HEADROOM 1 | |
33 | ||
84d48190 | 34 | int nfc_hci_result_to_errno(u8 result) |
6c1c5b9e EL |
35 | { |
36 | switch (result) { | |
37 | case NFC_HCI_ANY_OK: | |
38 | return 0; | |
23f7e6d0 EL |
39 | case NFC_HCI_ANY_E_REG_PAR_UNKNOWN: |
40 | return -EOPNOTSUPP; | |
6c1c5b9e EL |
41 | case NFC_HCI_ANY_E_TIMEOUT: |
42 | return -ETIME; | |
43 | default: | |
44 | return -1; | |
45 | } | |
46 | } | |
84d48190 | 47 | EXPORT_SYMBOL(nfc_hci_result_to_errno); |
6c1c5b9e | 48 | |
8b8d2e08 EL |
49 | static void nfc_hci_msg_tx_work(struct work_struct *work) |
50 | { | |
51 | struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev, | |
52 | msg_tx_work); | |
53 | struct hci_msg *msg; | |
54 | struct sk_buff *skb; | |
55 | int r = 0; | |
56 | ||
57 | mutex_lock(&hdev->msg_tx_mutex); | |
f0c91038 EL |
58 | if (hdev->shutting_down) |
59 | goto exit; | |
8b8d2e08 EL |
60 | |
61 | if (hdev->cmd_pending_msg) { | |
62 | if (timer_pending(&hdev->cmd_timer) == 0) { | |
63 | if (hdev->cmd_pending_msg->cb) | |
b5faa648 | 64 | hdev->cmd_pending_msg->cb(hdev-> |
8b8d2e08 | 65 | cmd_pending_msg-> |
b5faa648 EL |
66 | cb_context, |
67 | NULL, | |
68 | -ETIME); | |
8b8d2e08 EL |
69 | kfree(hdev->cmd_pending_msg); |
70 | hdev->cmd_pending_msg = NULL; | |
0f450772 | 71 | } else { |
8b8d2e08 | 72 | goto exit; |
0f450772 | 73 | } |
8b8d2e08 EL |
74 | } |
75 | ||
76 | next_msg: | |
77 | if (list_empty(&hdev->msg_tx_queue)) | |
78 | goto exit; | |
79 | ||
80 | msg = list_first_entry(&hdev->msg_tx_queue, struct hci_msg, msg_l); | |
81 | list_del(&msg->msg_l); | |
82 | ||
83 | pr_debug("msg_tx_queue has a cmd to send\n"); | |
84 | while ((skb = skb_dequeue(&msg->msg_frags)) != NULL) { | |
412fda53 | 85 | r = nfc_llc_xmit_from_hci(hdev->llc, skb); |
8b8d2e08 EL |
86 | if (r < 0) { |
87 | kfree_skb(skb); | |
88 | skb_queue_purge(&msg->msg_frags); | |
89 | if (msg->cb) | |
b5faa648 | 90 | msg->cb(msg->cb_context, NULL, r); |
8b8d2e08 EL |
91 | kfree(msg); |
92 | break; | |
93 | } | |
94 | } | |
95 | ||
96 | if (r) | |
97 | goto next_msg; | |
98 | ||
99 | if (msg->wait_response == false) { | |
100 | kfree(msg); | |
101 | goto next_msg; | |
102 | } | |
103 | ||
104 | hdev->cmd_pending_msg = msg; | |
105 | mod_timer(&hdev->cmd_timer, jiffies + | |
106 | msecs_to_jiffies(hdev->cmd_pending_msg->completion_delay)); | |
107 | ||
108 | exit: | |
109 | mutex_unlock(&hdev->msg_tx_mutex); | |
110 | } | |
111 | ||
112 | static void nfc_hci_msg_rx_work(struct work_struct *work) | |
113 | { | |
114 | struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev, | |
115 | msg_rx_work); | |
116 | struct sk_buff *skb; | |
117 | struct hcp_message *message; | |
118 | u8 pipe; | |
119 | u8 type; | |
120 | u8 instruction; | |
121 | ||
122 | while ((skb = skb_dequeue(&hdev->msg_rx_queue)) != NULL) { | |
123 | pipe = skb->data[0]; | |
124 | skb_pull(skb, NFC_HCI_HCP_PACKET_HEADER_LEN); | |
125 | message = (struct hcp_message *)skb->data; | |
126 | type = HCP_MSG_GET_TYPE(message->header); | |
127 | instruction = HCP_MSG_GET_CMD(message->header); | |
128 | skb_pull(skb, NFC_HCI_HCP_MESSAGE_HEADER_LEN); | |
129 | ||
130 | nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, skb); | |
131 | } | |
132 | } | |
133 | ||
ccca0d6e EL |
134 | static void __nfc_hci_cmd_completion(struct nfc_hci_dev *hdev, int err, |
135 | struct sk_buff *skb) | |
8b8d2e08 | 136 | { |
8b8d2e08 EL |
137 | del_timer_sync(&hdev->cmd_timer); |
138 | ||
139 | if (hdev->cmd_pending_msg->cb) | |
b5faa648 EL |
140 | hdev->cmd_pending_msg->cb(hdev->cmd_pending_msg->cb_context, |
141 | skb, err); | |
8b8d2e08 EL |
142 | else |
143 | kfree_skb(skb); | |
144 | ||
145 | kfree(hdev->cmd_pending_msg); | |
146 | hdev->cmd_pending_msg = NULL; | |
147 | ||
916082b0 | 148 | schedule_work(&hdev->msg_tx_work); |
ccca0d6e EL |
149 | } |
150 | ||
151 | void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result, | |
152 | struct sk_buff *skb) | |
153 | { | |
154 | mutex_lock(&hdev->msg_tx_mutex); | |
155 | ||
156 | if (hdev->cmd_pending_msg == NULL) { | |
157 | kfree_skb(skb); | |
158 | goto exit; | |
159 | } | |
160 | ||
161 | __nfc_hci_cmd_completion(hdev, nfc_hci_result_to_errno(result), skb); | |
8b8d2e08 EL |
162 | |
163 | exit: | |
164 | mutex_unlock(&hdev->msg_tx_mutex); | |
165 | } | |
166 | ||
167 | void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd, | |
168 | struct sk_buff *skb) | |
169 | { | |
deff5aa4 CR |
170 | int r = 0; |
171 | u8 gate = nfc_hci_pipe2gate(hdev, pipe); | |
172 | u8 local_gate, new_pipe; | |
173 | u8 gate_opened = 0x00; | |
174 | ||
175 | pr_debug("from gate %x pipe %x cmd %x\n", gate, pipe, cmd); | |
176 | ||
177 | switch (cmd) { | |
178 | case NFC_HCI_ADM_NOTIFY_PIPE_CREATED: | |
179 | if (skb->len != 5) { | |
180 | r = -EPROTO; | |
181 | break; | |
182 | } | |
183 | ||
184 | local_gate = skb->data[3]; | |
185 | new_pipe = skb->data[4]; | |
186 | nfc_hci_send_response(hdev, gate, NFC_HCI_ANY_OK, NULL, 0); | |
187 | ||
188 | /* save the new created pipe and bind with local gate, | |
189 | * the description for skb->data[3] is destination gate id | |
190 | * but since we received this cmd from host controller, we | |
191 | * are the destination and it is our local gate | |
192 | */ | |
193 | hdev->gate2pipe[local_gate] = new_pipe; | |
194 | break; | |
195 | case NFC_HCI_ANY_OPEN_PIPE: | |
196 | /* if the pipe is already created, we allow remote host to | |
197 | * open it | |
198 | */ | |
199 | if (gate != 0xff) | |
200 | nfc_hci_send_response(hdev, gate, NFC_HCI_ANY_OK, | |
201 | &gate_opened, 1); | |
202 | break; | |
a2ae2182 CR |
203 | case NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED: |
204 | nfc_hci_send_response(hdev, gate, NFC_HCI_ANY_OK, NULL, 0); | |
205 | break; | |
deff5aa4 CR |
206 | default: |
207 | pr_info("Discarded unknown cmd %x to gate %x\n", cmd, gate); | |
208 | r = -EINVAL; | |
209 | break; | |
210 | } | |
211 | ||
8b8d2e08 EL |
212 | kfree_skb(skb); |
213 | } | |
214 | ||
9c5121a0 | 215 | u32 nfc_hci_sak_to_protocol(u8 sak) |
8b8d2e08 EL |
216 | { |
217 | switch (NFC_HCI_TYPE_A_SEL_PROT(sak)) { | |
218 | case NFC_HCI_TYPE_A_SEL_PROT_MIFARE: | |
219 | return NFC_PROTO_MIFARE_MASK; | |
220 | case NFC_HCI_TYPE_A_SEL_PROT_ISO14443: | |
221 | return NFC_PROTO_ISO14443_MASK; | |
222 | case NFC_HCI_TYPE_A_SEL_PROT_DEP: | |
223 | return NFC_PROTO_NFC_DEP_MASK; | |
224 | case NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP: | |
225 | return NFC_PROTO_ISO14443_MASK | NFC_PROTO_NFC_DEP_MASK; | |
226 | default: | |
227 | return 0xffffffff; | |
228 | } | |
229 | } | |
9c5121a0 | 230 | EXPORT_SYMBOL(nfc_hci_sak_to_protocol); |
8b8d2e08 | 231 | |
f7a5f6c5 | 232 | int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate) |
8b8d2e08 EL |
233 | { |
234 | struct nfc_target *targets; | |
235 | struct sk_buff *atqa_skb = NULL; | |
236 | struct sk_buff *sak_skb = NULL; | |
81b30395 | 237 | struct sk_buff *uid_skb = NULL; |
8b8d2e08 EL |
238 | int r; |
239 | ||
240 | pr_debug("from gate %d\n", gate); | |
241 | ||
242 | targets = kzalloc(sizeof(struct nfc_target), GFP_KERNEL); | |
243 | if (targets == NULL) | |
244 | return -ENOMEM; | |
245 | ||
246 | switch (gate) { | |
247 | case NFC_HCI_RF_READER_A_GATE: | |
248 | r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE, | |
249 | NFC_HCI_RF_READER_A_ATQA, &atqa_skb); | |
250 | if (r < 0) | |
251 | goto exit; | |
252 | ||
253 | r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE, | |
254 | NFC_HCI_RF_READER_A_SAK, &sak_skb); | |
255 | if (r < 0) | |
256 | goto exit; | |
257 | ||
258 | if (atqa_skb->len != 2 || sak_skb->len != 1) { | |
259 | r = -EPROTO; | |
260 | goto exit; | |
261 | } | |
262 | ||
263 | targets->supported_protocols = | |
264 | nfc_hci_sak_to_protocol(sak_skb->data[0]); | |
265 | if (targets->supported_protocols == 0xffffffff) { | |
266 | r = -EPROTO; | |
267 | goto exit; | |
268 | } | |
269 | ||
74157ef5 | 270 | targets->sens_res = be16_to_cpu(*(__be16 *)atqa_skb->data); |
8b8d2e08 EL |
271 | targets->sel_res = sak_skb->data[0]; |
272 | ||
81b30395 EL |
273 | r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE, |
274 | NFC_HCI_RF_READER_A_UID, &uid_skb); | |
275 | if (r < 0) | |
276 | goto exit; | |
277 | ||
278 | if (uid_skb->len == 0 || uid_skb->len > NFC_NFCID1_MAXSIZE) { | |
279 | r = -EPROTO; | |
280 | goto exit; | |
281 | } | |
282 | ||
283 | memcpy(targets->nfcid1, uid_skb->data, uid_skb->len); | |
284 | targets->nfcid1_len = uid_skb->len; | |
285 | ||
8b8d2e08 EL |
286 | if (hdev->ops->complete_target_discovered) { |
287 | r = hdev->ops->complete_target_discovered(hdev, gate, | |
288 | targets); | |
289 | if (r < 0) | |
290 | goto exit; | |
291 | } | |
292 | break; | |
293 | case NFC_HCI_RF_READER_B_GATE: | |
01d719a2 | 294 | targets->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
8b8d2e08 EL |
295 | break; |
296 | default: | |
297 | if (hdev->ops->target_from_gate) | |
298 | r = hdev->ops->target_from_gate(hdev, gate, targets); | |
299 | else | |
300 | r = -EPROTO; | |
301 | if (r < 0) | |
302 | goto exit; | |
303 | ||
304 | if (hdev->ops->complete_target_discovered) { | |
305 | r = hdev->ops->complete_target_discovered(hdev, gate, | |
306 | targets); | |
307 | if (r < 0) | |
308 | goto exit; | |
309 | } | |
310 | break; | |
311 | } | |
312 | ||
928326f2 AW |
313 | /* if driver set the new gate, we will skip the old one */ |
314 | if (targets->hci_reader_gate == 0x00) | |
315 | targets->hci_reader_gate = gate; | |
8b8d2e08 EL |
316 | |
317 | r = nfc_targets_found(hdev->ndev, targets, 1); | |
8b8d2e08 EL |
318 | |
319 | exit: | |
320 | kfree(targets); | |
321 | kfree_skb(atqa_skb); | |
322 | kfree_skb(sak_skb); | |
81b30395 | 323 | kfree_skb(uid_skb); |
8b8d2e08 EL |
324 | |
325 | return r; | |
326 | } | |
f7a5f6c5 | 327 | EXPORT_SYMBOL(nfc_hci_target_discovered); |
8b8d2e08 EL |
328 | |
329 | void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event, | |
330 | struct sk_buff *skb) | |
331 | { | |
332 | int r = 0; | |
74a5b966 EL |
333 | u8 gate = nfc_hci_pipe2gate(hdev, pipe); |
334 | ||
335 | if (gate == 0xff) { | |
336 | pr_err("Discarded event %x to unopened pipe %x\n", event, pipe); | |
337 | goto exit; | |
338 | } | |
8b8d2e08 | 339 | |
40d06d36 EL |
340 | if (hdev->ops->event_received) { |
341 | r = hdev->ops->event_received(hdev, gate, event, skb); | |
342 | if (r <= 0) | |
343 | goto exit_noskb; | |
344 | } | |
345 | ||
8b8d2e08 EL |
346 | switch (event) { |
347 | case NFC_HCI_EVT_TARGET_DISCOVERED: | |
8b8d2e08 EL |
348 | if (skb->len < 1) { /* no status data? */ |
349 | r = -EPROTO; | |
350 | goto exit; | |
351 | } | |
352 | ||
353 | if (skb->data[0] == 3) { | |
354 | /* TODO: Multiple targets in field, none activated | |
355 | * poll is supposedly stopped, but there is no | |
356 | * single target to activate, so nothing to report | |
357 | * up. | |
358 | * if we need to restart poll, we must save the | |
359 | * protocols from the initial poll and reuse here. | |
360 | */ | |
361 | } | |
362 | ||
363 | if (skb->data[0] != 0) { | |
364 | r = -EPROTO; | |
365 | goto exit; | |
366 | } | |
367 | ||
74a5b966 | 368 | r = nfc_hci_target_discovered(hdev, gate); |
8b8d2e08 EL |
369 | break; |
370 | default: | |
40d06d36 EL |
371 | pr_info("Discarded unknown event %x to gate %x\n", event, gate); |
372 | r = -EINVAL; | |
8b8d2e08 EL |
373 | break; |
374 | } | |
375 | ||
376 | exit: | |
377 | kfree_skb(skb); | |
378 | ||
27c31191 | 379 | exit_noskb: |
249eb5bd SO |
380 | if (r) |
381 | nfc_hci_driver_failure(hdev, r); | |
8b8d2e08 EL |
382 | } |
383 | ||
384 | static void nfc_hci_cmd_timeout(unsigned long data) | |
385 | { | |
386 | struct nfc_hci_dev *hdev = (struct nfc_hci_dev *)data; | |
387 | ||
916082b0 | 388 | schedule_work(&hdev->msg_tx_work); |
8b8d2e08 EL |
389 | } |
390 | ||
391 | static int hci_dev_connect_gates(struct nfc_hci_dev *hdev, u8 gate_count, | |
a10d595b | 392 | struct nfc_hci_gate *gates) |
8b8d2e08 EL |
393 | { |
394 | int r; | |
8b8d2e08 | 395 | while (gate_count--) { |
a10d595b EL |
396 | r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID, |
397 | gates->gate, gates->pipe); | |
8b8d2e08 EL |
398 | if (r < 0) |
399 | return r; | |
a10d595b | 400 | gates++; |
8b8d2e08 EL |
401 | } |
402 | ||
403 | return 0; | |
404 | } | |
405 | ||
406 | static int hci_dev_session_init(struct nfc_hci_dev *hdev) | |
407 | { | |
408 | struct sk_buff *skb = NULL; | |
409 | int r; | |
a10d595b EL |
410 | |
411 | if (hdev->init_data.gates[0].gate != NFC_HCI_ADMIN_GATE) | |
412 | return -EPROTO; | |
8b8d2e08 EL |
413 | |
414 | r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID, | |
a10d595b EL |
415 | hdev->init_data.gates[0].gate, |
416 | hdev->init_data.gates[0].pipe); | |
8b8d2e08 EL |
417 | if (r < 0) |
418 | goto exit; | |
419 | ||
420 | r = nfc_hci_get_param(hdev, NFC_HCI_ADMIN_GATE, | |
421 | NFC_HCI_ADMIN_SESSION_IDENTITY, &skb); | |
422 | if (r < 0) | |
423 | goto disconnect_all; | |
424 | ||
e240bc36 CR |
425 | if (skb->len && skb->len == strlen(hdev->init_data.session_id) && |
426 | (memcmp(hdev->init_data.session_id, skb->data, | |
427 | skb->len) == 0) && hdev->ops->load_session) { | |
428 | /* Restore gate<->pipe table from some proprietary location. */ | |
8b8d2e08 | 429 | |
e240bc36 | 430 | r = hdev->ops->load_session(hdev); |
8b8d2e08 | 431 | |
e240bc36 CR |
432 | if (r < 0) |
433 | goto disconnect_all; | |
434 | } else { | |
8b8d2e08 | 435 | |
e240bc36 CR |
436 | r = nfc_hci_disconnect_all_gates(hdev); |
437 | if (r < 0) | |
438 | goto exit; | |
8b8d2e08 | 439 | |
e240bc36 CR |
440 | r = hci_dev_connect_gates(hdev, hdev->init_data.gate_count, |
441 | hdev->init_data.gates); | |
442 | if (r < 0) | |
443 | goto disconnect_all; | |
444 | ||
445 | r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE, | |
446 | NFC_HCI_ADMIN_SESSION_IDENTITY, | |
447 | hdev->init_data.session_id, | |
448 | strlen(hdev->init_data.session_id)); | |
449 | } | |
8b8d2e08 EL |
450 | if (r == 0) |
451 | goto exit; | |
452 | ||
453 | disconnect_all: | |
454 | nfc_hci_disconnect_all_gates(hdev); | |
455 | ||
456 | exit: | |
33e59713 | 457 | kfree_skb(skb); |
8b8d2e08 EL |
458 | |
459 | return r; | |
460 | } | |
461 | ||
462 | static int hci_dev_version(struct nfc_hci_dev *hdev) | |
463 | { | |
464 | int r; | |
465 | struct sk_buff *skb; | |
466 | ||
467 | r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE, | |
468 | NFC_HCI_ID_MGMT_VERSION_SW, &skb); | |
23f7e6d0 EL |
469 | if (r == -EOPNOTSUPP) { |
470 | pr_info("Software/Hardware info not available\n"); | |
471 | return 0; | |
472 | } | |
8b8d2e08 EL |
473 | if (r < 0) |
474 | return r; | |
475 | ||
476 | if (skb->len != 3) { | |
477 | kfree_skb(skb); | |
478 | return -EINVAL; | |
479 | } | |
480 | ||
481 | hdev->sw_romlib = (skb->data[0] & 0xf0) >> 4; | |
482 | hdev->sw_patch = skb->data[0] & 0x0f; | |
483 | hdev->sw_flashlib_major = skb->data[1]; | |
484 | hdev->sw_flashlib_minor = skb->data[2]; | |
485 | ||
486 | kfree_skb(skb); | |
487 | ||
488 | r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE, | |
489 | NFC_HCI_ID_MGMT_VERSION_HW, &skb); | |
490 | if (r < 0) | |
491 | return r; | |
492 | ||
493 | if (skb->len != 3) { | |
494 | kfree_skb(skb); | |
495 | return -EINVAL; | |
496 | } | |
497 | ||
498 | hdev->hw_derivative = (skb->data[0] & 0xe0) >> 5; | |
499 | hdev->hw_version = skb->data[0] & 0x1f; | |
500 | hdev->hw_mpw = (skb->data[1] & 0xc0) >> 6; | |
501 | hdev->hw_software = skb->data[1] & 0x3f; | |
502 | hdev->hw_bsid = skb->data[2]; | |
503 | ||
504 | kfree_skb(skb); | |
505 | ||
506 | pr_info("SOFTWARE INFO:\n"); | |
507 | pr_info("RomLib : %d\n", hdev->sw_romlib); | |
508 | pr_info("Patch : %d\n", hdev->sw_patch); | |
509 | pr_info("FlashLib Major : %d\n", hdev->sw_flashlib_major); | |
510 | pr_info("FlashLib Minor : %d\n", hdev->sw_flashlib_minor); | |
511 | pr_info("HARDWARE INFO:\n"); | |
512 | pr_info("Derivative : %d\n", hdev->hw_derivative); | |
513 | pr_info("HW Version : %d\n", hdev->hw_version); | |
514 | pr_info("#MPW : %d\n", hdev->hw_mpw); | |
515 | pr_info("Software : %d\n", hdev->hw_software); | |
516 | pr_info("BSID Version : %d\n", hdev->hw_bsid); | |
517 | ||
518 | return 0; | |
519 | } | |
520 | ||
521 | static int hci_dev_up(struct nfc_dev *nfc_dev) | |
522 | { | |
523 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
524 | int r = 0; | |
525 | ||
526 | if (hdev->ops->open) { | |
527 | r = hdev->ops->open(hdev); | |
528 | if (r < 0) | |
529 | return r; | |
530 | } | |
531 | ||
412fda53 EL |
532 | r = nfc_llc_start(hdev->llc); |
533 | if (r < 0) | |
534 | goto exit_close; | |
535 | ||
8b8d2e08 EL |
536 | r = hci_dev_session_init(hdev); |
537 | if (r < 0) | |
412fda53 | 538 | goto exit_llc; |
8b8d2e08 EL |
539 | |
540 | r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE, | |
541 | NFC_HCI_EVT_END_OPERATION, NULL, 0); | |
542 | if (r < 0) | |
412fda53 | 543 | goto exit_llc; |
8b8d2e08 EL |
544 | |
545 | if (hdev->ops->hci_ready) { | |
546 | r = hdev->ops->hci_ready(hdev); | |
547 | if (r < 0) | |
412fda53 | 548 | goto exit_llc; |
8b8d2e08 EL |
549 | } |
550 | ||
551 | r = hci_dev_version(hdev); | |
552 | if (r < 0) | |
412fda53 EL |
553 | goto exit_llc; |
554 | ||
555 | return 0; | |
556 | ||
557 | exit_llc: | |
558 | nfc_llc_stop(hdev->llc); | |
559 | ||
560 | exit_close: | |
561 | if (hdev->ops->close) | |
562 | hdev->ops->close(hdev); | |
8b8d2e08 | 563 | |
8b8d2e08 EL |
564 | return r; |
565 | } | |
566 | ||
567 | static int hci_dev_down(struct nfc_dev *nfc_dev) | |
568 | { | |
569 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
570 | ||
412fda53 EL |
571 | nfc_llc_stop(hdev->llc); |
572 | ||
8b8d2e08 EL |
573 | if (hdev->ops->close) |
574 | hdev->ops->close(hdev); | |
575 | ||
576 | memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe)); | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
fe7c5800 SO |
581 | static int hci_start_poll(struct nfc_dev *nfc_dev, |
582 | u32 im_protocols, u32 tm_protocols) | |
8b8d2e08 EL |
583 | { |
584 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
8b8d2e08 EL |
585 | |
586 | if (hdev->ops->start_poll) | |
fe7c5800 | 587 | return hdev->ops->start_poll(hdev, im_protocols, tm_protocols); |
8b8d2e08 | 588 | else |
03bed29e | 589 | return nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE, |
0f450772 SJ |
590 | NFC_HCI_EVT_READER_REQUESTED, |
591 | NULL, 0); | |
8b8d2e08 EL |
592 | } |
593 | ||
594 | static void hci_stop_poll(struct nfc_dev *nfc_dev) | |
595 | { | |
596 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
597 | ||
95f7687b CR |
598 | if (hdev->ops->stop_poll) |
599 | hdev->ops->stop_poll(hdev); | |
600 | else | |
601 | nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE, | |
602 | NFC_HCI_EVT_END_OPERATION, NULL, 0); | |
8b8d2e08 EL |
603 | } |
604 | ||
c40d1740 AW |
605 | static int hci_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
606 | __u8 comm_mode, __u8 *gb, size_t gb_len) | |
607 | { | |
608 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
609 | ||
a395298c SO |
610 | if (!hdev->ops->dep_link_up) |
611 | return 0; | |
c40d1740 | 612 | |
a395298c SO |
613 | return hdev->ops->dep_link_up(hdev, target, comm_mode, |
614 | gb, gb_len); | |
c40d1740 AW |
615 | } |
616 | ||
617 | static int hci_dep_link_down(struct nfc_dev *nfc_dev) | |
618 | { | |
619 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
620 | ||
a395298c SO |
621 | if (!hdev->ops->dep_link_down) |
622 | return 0; | |
c40d1740 | 623 | |
a395298c | 624 | return hdev->ops->dep_link_down(hdev); |
c40d1740 AW |
625 | } |
626 | ||
90099433 EL |
627 | static int hci_activate_target(struct nfc_dev *nfc_dev, |
628 | struct nfc_target *target, u32 protocol) | |
8b8d2e08 | 629 | { |
8b8d2e08 EL |
630 | return 0; |
631 | } | |
632 | ||
90099433 EL |
633 | static void hci_deactivate_target(struct nfc_dev *nfc_dev, |
634 | struct nfc_target *target) | |
8b8d2e08 EL |
635 | { |
636 | } | |
637 | ||
f3e8fb55 EL |
638 | #define HCI_CB_TYPE_TRANSCEIVE 1 |
639 | ||
640 | static void hci_transceive_cb(void *context, struct sk_buff *skb, int err) | |
641 | { | |
642 | struct nfc_hci_dev *hdev = context; | |
643 | ||
644 | switch (hdev->async_cb_type) { | |
645 | case HCI_CB_TYPE_TRANSCEIVE: | |
646 | /* | |
647 | * TODO: Check RF Error indicator to make sure data is valid. | |
648 | * It seems that HCI cmd can complete without error, but data | |
649 | * can be invalid if an RF error occured? Ignore for now. | |
650 | */ | |
651 | if (err == 0) | |
652 | skb_trim(skb, skb->len - 1); /* RF Err ind */ | |
653 | ||
654 | hdev->async_cb(hdev->async_cb_context, skb, err); | |
655 | break; | |
656 | default: | |
657 | if (err == 0) | |
658 | kfree_skb(skb); | |
659 | break; | |
660 | } | |
661 | } | |
662 | ||
be9ae4ce SO |
663 | static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target, |
664 | struct sk_buff *skb, data_exchange_cb_t cb, | |
665 | void *cb_context) | |
8b8d2e08 EL |
666 | { |
667 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
668 | int r; | |
8b8d2e08 | 669 | |
90099433 | 670 | pr_debug("target_idx=%d\n", target->idx); |
8b8d2e08 EL |
671 | |
672 | switch (target->hci_reader_gate) { | |
673 | case NFC_HCI_RF_READER_A_GATE: | |
674 | case NFC_HCI_RF_READER_B_GATE: | |
e8107623 AW |
675 | if (hdev->ops->im_transceive) { |
676 | r = hdev->ops->im_transceive(hdev, target, skb, cb, | |
f3e8fb55 | 677 | cb_context); |
8b8d2e08 EL |
678 | if (r <= 0) /* handled */ |
679 | break; | |
680 | } | |
681 | ||
682 | *skb_push(skb, 1) = 0; /* CTR, see spec:10.2.2.1 */ | |
f3e8fb55 EL |
683 | |
684 | hdev->async_cb_type = HCI_CB_TYPE_TRANSCEIVE; | |
685 | hdev->async_cb = cb; | |
686 | hdev->async_cb_context = cb_context; | |
687 | ||
688 | r = nfc_hci_send_cmd_async(hdev, target->hci_reader_gate, | |
689 | NFC_HCI_WR_XCHG_DATA, skb->data, | |
690 | skb->len, hci_transceive_cb, hdev); | |
8b8d2e08 EL |
691 | break; |
692 | default: | |
e8107623 AW |
693 | if (hdev->ops->im_transceive) { |
694 | r = hdev->ops->im_transceive(hdev, target, skb, cb, | |
f3e8fb55 | 695 | cb_context); |
8b8d2e08 EL |
696 | if (r == 1) |
697 | r = -ENOTSUPP; | |
0f450772 | 698 | } else { |
8b8d2e08 | 699 | r = -ENOTSUPP; |
0f450772 | 700 | } |
f3e8fb55 | 701 | break; |
8b8d2e08 EL |
702 | } |
703 | ||
704 | kfree_skb(skb); | |
705 | ||
f3e8fb55 | 706 | return r; |
8b8d2e08 EL |
707 | } |
708 | ||
984d334f | 709 | static int hci_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) |
e8107623 AW |
710 | { |
711 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
712 | ||
a395298c SO |
713 | if (!hdev->ops->tm_send) { |
714 | kfree_skb(skb); | |
715 | return -ENOTSUPP; | |
716 | } | |
924d4a02 | 717 | |
a395298c | 718 | return hdev->ops->tm_send(hdev, skb); |
e8107623 AW |
719 | } |
720 | ||
1676f751 EL |
721 | static int hci_check_presence(struct nfc_dev *nfc_dev, |
722 | struct nfc_target *target) | |
723 | { | |
724 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
725 | ||
a395298c SO |
726 | if (!hdev->ops->check_presence) |
727 | return 0; | |
1676f751 | 728 | |
a395298c | 729 | return hdev->ops->check_presence(hdev, target); |
1676f751 EL |
730 | } |
731 | ||
0a946301 SO |
732 | static int hci_discover_se(struct nfc_dev *nfc_dev) |
733 | { | |
734 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
735 | ||
736 | if (hdev->ops->discover_se) | |
737 | return hdev->ops->discover_se(hdev); | |
738 | ||
739 | return 0; | |
740 | } | |
741 | ||
742 | static int hci_enable_se(struct nfc_dev *nfc_dev, u32 se_idx) | |
743 | { | |
744 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
745 | ||
746 | if (hdev->ops->enable_se) | |
747 | return hdev->ops->enable_se(hdev, se_idx); | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | static int hci_disable_se(struct nfc_dev *nfc_dev, u32 se_idx) | |
753 | { | |
754 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
755 | ||
756 | if (hdev->ops->disable_se) | |
4eba11e8 | 757 | return hdev->ops->disable_se(hdev, se_idx); |
0a946301 SO |
758 | |
759 | return 0; | |
760 | } | |
761 | ||
9b8d32b7 CR |
762 | static int hci_se_io(struct nfc_dev *nfc_dev, u32 se_idx, |
763 | u8 *apdu, size_t apdu_length, | |
764 | se_io_cb_t cb, void *cb_context) | |
765 | { | |
766 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
767 | ||
768 | if (hdev->ops->se_io) | |
769 | return hdev->ops->se_io(hdev, se_idx, apdu, | |
770 | apdu_length, cb, cb_context); | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
412fda53 EL |
775 | static void nfc_hci_failure(struct nfc_hci_dev *hdev, int err) |
776 | { | |
777 | mutex_lock(&hdev->msg_tx_mutex); | |
778 | ||
779 | if (hdev->cmd_pending_msg == NULL) { | |
780 | nfc_driver_failure(hdev->ndev, err); | |
781 | goto exit; | |
782 | } | |
783 | ||
784 | __nfc_hci_cmd_completion(hdev, err, NULL); | |
785 | ||
786 | exit: | |
787 | mutex_unlock(&hdev->msg_tx_mutex); | |
788 | } | |
789 | ||
790 | static void nfc_hci_llc_failure(struct nfc_hci_dev *hdev, int err) | |
791 | { | |
792 | nfc_hci_failure(hdev, err); | |
793 | } | |
794 | ||
795 | static void nfc_hci_recv_from_llc(struct nfc_hci_dev *hdev, struct sk_buff *skb) | |
796 | { | |
797 | struct hcp_packet *packet; | |
798 | u8 type; | |
799 | u8 instruction; | |
800 | struct sk_buff *hcp_skb; | |
801 | u8 pipe; | |
802 | struct sk_buff *frag_skb; | |
803 | int msg_len; | |
804 | ||
805 | packet = (struct hcp_packet *)skb->data; | |
806 | if ((packet->header & ~NFC_HCI_FRAGMENT) == 0) { | |
807 | skb_queue_tail(&hdev->rx_hcp_frags, skb); | |
808 | return; | |
809 | } | |
810 | ||
811 | /* it's the last fragment. Does it need re-aggregation? */ | |
812 | if (skb_queue_len(&hdev->rx_hcp_frags)) { | |
813 | pipe = packet->header & NFC_HCI_FRAGMENT; | |
814 | skb_queue_tail(&hdev->rx_hcp_frags, skb); | |
815 | ||
816 | msg_len = 0; | |
817 | skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) { | |
818 | msg_len += (frag_skb->len - | |
819 | NFC_HCI_HCP_PACKET_HEADER_LEN); | |
820 | } | |
821 | ||
822 | hcp_skb = nfc_alloc_recv_skb(NFC_HCI_HCP_PACKET_HEADER_LEN + | |
823 | msg_len, GFP_KERNEL); | |
824 | if (hcp_skb == NULL) { | |
825 | nfc_hci_failure(hdev, -ENOMEM); | |
826 | return; | |
827 | } | |
828 | ||
829 | *skb_put(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN) = pipe; | |
830 | ||
831 | skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) { | |
832 | msg_len = frag_skb->len - NFC_HCI_HCP_PACKET_HEADER_LEN; | |
833 | memcpy(skb_put(hcp_skb, msg_len), | |
834 | frag_skb->data + NFC_HCI_HCP_PACKET_HEADER_LEN, | |
835 | msg_len); | |
836 | } | |
837 | ||
838 | skb_queue_purge(&hdev->rx_hcp_frags); | |
839 | } else { | |
840 | packet->header &= NFC_HCI_FRAGMENT; | |
841 | hcp_skb = skb; | |
842 | } | |
843 | ||
844 | /* if this is a response, dispatch immediately to | |
845 | * unblock waiting cmd context. Otherwise, enqueue to dispatch | |
846 | * in separate context where handler can also execute command. | |
847 | */ | |
848 | packet = (struct hcp_packet *)hcp_skb->data; | |
849 | type = HCP_MSG_GET_TYPE(packet->message.header); | |
850 | if (type == NFC_HCI_HCP_RESPONSE) { | |
851 | pipe = packet->header; | |
852 | instruction = HCP_MSG_GET_CMD(packet->message.header); | |
853 | skb_pull(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN + | |
854 | NFC_HCI_HCP_MESSAGE_HEADER_LEN); | |
855 | nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, hcp_skb); | |
856 | } else { | |
857 | skb_queue_tail(&hdev->msg_rx_queue, hcp_skb); | |
916082b0 | 858 | schedule_work(&hdev->msg_rx_work); |
412fda53 EL |
859 | } |
860 | } | |
861 | ||
9ea7187c | 862 | static int hci_fw_download(struct nfc_dev *nfc_dev, const char *firmware_name) |
9a695d23 EL |
863 | { |
864 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
865 | ||
9ea7187c | 866 | if (!hdev->ops->fw_download) |
a395298c | 867 | return -ENOTSUPP; |
9a695d23 | 868 | |
9ea7187c | 869 | return hdev->ops->fw_download(hdev, firmware_name); |
9a695d23 EL |
870 | } |
871 | ||
bd007bea | 872 | static struct nfc_ops hci_nfc_ops = { |
8b8d2e08 EL |
873 | .dev_up = hci_dev_up, |
874 | .dev_down = hci_dev_down, | |
875 | .start_poll = hci_start_poll, | |
876 | .stop_poll = hci_stop_poll, | |
c40d1740 AW |
877 | .dep_link_up = hci_dep_link_up, |
878 | .dep_link_down = hci_dep_link_down, | |
8b8d2e08 EL |
879 | .activate_target = hci_activate_target, |
880 | .deactivate_target = hci_deactivate_target, | |
be9ae4ce | 881 | .im_transceive = hci_transceive, |
e8107623 | 882 | .tm_send = hci_tm_send, |
1676f751 | 883 | .check_presence = hci_check_presence, |
9ea7187c | 884 | .fw_download = hci_fw_download, |
0a946301 SO |
885 | .discover_se = hci_discover_se, |
886 | .enable_se = hci_enable_se, | |
887 | .disable_se = hci_disable_se, | |
9b8d32b7 | 888 | .se_io = hci_se_io, |
8b8d2e08 EL |
889 | }; |
890 | ||
891 | struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops, | |
892 | struct nfc_hci_init_data *init_data, | |
bf71ab8b | 893 | unsigned long quirks, |
8b8d2e08 | 894 | u32 protocols, |
412fda53 | 895 | const char *llc_name, |
8b8d2e08 EL |
896 | int tx_headroom, |
897 | int tx_tailroom, | |
898 | int max_link_payload) | |
899 | { | |
900 | struct nfc_hci_dev *hdev; | |
901 | ||
902 | if (ops->xmit == NULL) | |
903 | return NULL; | |
904 | ||
905 | if (protocols == 0) | |
906 | return NULL; | |
907 | ||
908 | hdev = kzalloc(sizeof(struct nfc_hci_dev), GFP_KERNEL); | |
909 | if (hdev == NULL) | |
910 | return NULL; | |
911 | ||
412fda53 EL |
912 | hdev->llc = nfc_llc_allocate(llc_name, hdev, ops->xmit, |
913 | nfc_hci_recv_from_llc, tx_headroom, | |
914 | tx_tailroom, nfc_hci_llc_failure); | |
915 | if (hdev->llc == NULL) { | |
916 | kfree(hdev); | |
917 | return NULL; | |
918 | } | |
919 | ||
0b456c41 | 920 | hdev->ndev = nfc_allocate_device(&hci_nfc_ops, protocols, |
8b8d2e08 EL |
921 | tx_headroom + HCI_CMDS_HEADROOM, |
922 | tx_tailroom); | |
923 | if (!hdev->ndev) { | |
412fda53 | 924 | nfc_llc_free(hdev->llc); |
8b8d2e08 EL |
925 | kfree(hdev); |
926 | return NULL; | |
927 | } | |
928 | ||
929 | hdev->ops = ops; | |
930 | hdev->max_data_link_payload = max_link_payload; | |
931 | hdev->init_data = *init_data; | |
932 | ||
933 | nfc_set_drvdata(hdev->ndev, hdev); | |
934 | ||
935 | memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe)); | |
936 | ||
bf71ab8b EL |
937 | hdev->quirks = quirks; |
938 | ||
8b8d2e08 EL |
939 | return hdev; |
940 | } | |
941 | EXPORT_SYMBOL(nfc_hci_allocate_device); | |
942 | ||
943 | void nfc_hci_free_device(struct nfc_hci_dev *hdev) | |
944 | { | |
945 | nfc_free_device(hdev->ndev); | |
412fda53 | 946 | nfc_llc_free(hdev->llc); |
8b8d2e08 EL |
947 | kfree(hdev); |
948 | } | |
949 | EXPORT_SYMBOL(nfc_hci_free_device); | |
950 | ||
951 | int nfc_hci_register_device(struct nfc_hci_dev *hdev) | |
952 | { | |
8b8d2e08 EL |
953 | mutex_init(&hdev->msg_tx_mutex); |
954 | ||
955 | INIT_LIST_HEAD(&hdev->msg_tx_queue); | |
956 | ||
957 | INIT_WORK(&hdev->msg_tx_work, nfc_hci_msg_tx_work); | |
8b8d2e08 EL |
958 | |
959 | init_timer(&hdev->cmd_timer); | |
960 | hdev->cmd_timer.data = (unsigned long)hdev; | |
961 | hdev->cmd_timer.function = nfc_hci_cmd_timeout; | |
962 | ||
963 | skb_queue_head_init(&hdev->rx_hcp_frags); | |
964 | ||
965 | INIT_WORK(&hdev->msg_rx_work, nfc_hci_msg_rx_work); | |
8b8d2e08 EL |
966 | |
967 | skb_queue_head_init(&hdev->msg_rx_queue); | |
968 | ||
474fee3d | 969 | return nfc_register_device(hdev->ndev); |
8b8d2e08 EL |
970 | } |
971 | EXPORT_SYMBOL(nfc_hci_register_device); | |
972 | ||
973 | void nfc_hci_unregister_device(struct nfc_hci_dev *hdev) | |
974 | { | |
1913e57c | 975 | struct hci_msg *msg, *n; |
8b8d2e08 | 976 | |
f0c91038 EL |
977 | mutex_lock(&hdev->msg_tx_mutex); |
978 | ||
979 | if (hdev->cmd_pending_msg) { | |
980 | if (hdev->cmd_pending_msg->cb) | |
981 | hdev->cmd_pending_msg->cb( | |
982 | hdev->cmd_pending_msg->cb_context, | |
983 | NULL, -ESHUTDOWN); | |
984 | kfree(hdev->cmd_pending_msg); | |
985 | hdev->cmd_pending_msg = NULL; | |
986 | } | |
987 | ||
988 | hdev->shutting_down = true; | |
989 | ||
990 | mutex_unlock(&hdev->msg_tx_mutex); | |
991 | ||
992 | del_timer_sync(&hdev->cmd_timer); | |
993 | cancel_work_sync(&hdev->msg_tx_work); | |
994 | ||
995 | cancel_work_sync(&hdev->msg_rx_work); | |
996 | ||
997 | nfc_unregister_device(hdev->ndev); | |
998 | ||
8b8d2e08 EL |
999 | skb_queue_purge(&hdev->rx_hcp_frags); |
1000 | skb_queue_purge(&hdev->msg_rx_queue); | |
1001 | ||
1913e57c | 1002 | list_for_each_entry_safe(msg, n, &hdev->msg_tx_queue, msg_l) { |
8b8d2e08 EL |
1003 | list_del(&msg->msg_l); |
1004 | skb_queue_purge(&msg->msg_frags); | |
1005 | kfree(msg); | |
1006 | } | |
8b8d2e08 EL |
1007 | } |
1008 | EXPORT_SYMBOL(nfc_hci_unregister_device); | |
1009 | ||
1010 | void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata) | |
1011 | { | |
1012 | hdev->clientdata = clientdata; | |
1013 | } | |
1014 | EXPORT_SYMBOL(nfc_hci_set_clientdata); | |
1015 | ||
1016 | void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev) | |
1017 | { | |
1018 | return hdev->clientdata; | |
1019 | } | |
1020 | EXPORT_SYMBOL(nfc_hci_get_clientdata); | |
1021 | ||
72b06f75 EL |
1022 | void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err) |
1023 | { | |
1024 | nfc_hci_failure(hdev, err); | |
1025 | } | |
a9a741a7 EL |
1026 | EXPORT_SYMBOL(nfc_hci_driver_failure); |
1027 | ||
0f450772 | 1028 | void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb) |
8b8d2e08 | 1029 | { |
412fda53 | 1030 | nfc_llc_rcv_from_drv(hdev->llc, skb); |
8b8d2e08 EL |
1031 | } |
1032 | EXPORT_SYMBOL(nfc_hci_recv_frame); | |
1033 | ||
67cccfe1 EL |
1034 | static int __init nfc_hci_init(void) |
1035 | { | |
1036 | return nfc_llc_init(); | |
1037 | } | |
1038 | ||
1039 | static void __exit nfc_hci_exit(void) | |
1040 | { | |
1041 | nfc_llc_exit(); | |
1042 | } | |
1043 | ||
412fda53 | 1044 | subsys_initcall(nfc_hci_init); |
67cccfe1 EL |
1045 | module_exit(nfc_hci_exit); |
1046 | ||
8b8d2e08 | 1047 | MODULE_LICENSE("GPL"); |
80faa598 | 1048 | MODULE_DESCRIPTION("NFC HCI Core"); |