Commit | Line | Data |
---|---|---|
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 | |
118278f2 CR |
49 | void nfc_hci_reset_pipes(struct nfc_hci_dev *hdev) |
50 | { | |
51 | int i = 0; | |
52 | ||
53 | for (i = 0; i < NFC_HCI_MAX_PIPES; i++) { | |
54 | hdev->pipes[i].gate = NFC_HCI_INVALID_GATE; | |
55 | hdev->pipes[i].dest_host = NFC_HCI_INVALID_HOST; | |
56 | } | |
57 | memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe)); | |
58 | } | |
59 | EXPORT_SYMBOL(nfc_hci_reset_pipes); | |
60 | ||
61 | void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host) | |
62 | { | |
63 | int i = 0; | |
64 | ||
65 | for (i = 0; i < NFC_HCI_MAX_PIPES; i++) { | |
66 | if (hdev->pipes[i].dest_host != host) | |
67 | continue; | |
68 | ||
69 | hdev->pipes[i].gate = NFC_HCI_INVALID_GATE; | |
70 | hdev->pipes[i].dest_host = NFC_HCI_INVALID_HOST; | |
71 | } | |
72 | } | |
73 | EXPORT_SYMBOL(nfc_hci_reset_pipes_per_host); | |
74 | ||
8b8d2e08 EL |
75 | static void nfc_hci_msg_tx_work(struct work_struct *work) |
76 | { | |
77 | struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev, | |
78 | msg_tx_work); | |
79 | struct hci_msg *msg; | |
80 | struct sk_buff *skb; | |
81 | int r = 0; | |
82 | ||
83 | mutex_lock(&hdev->msg_tx_mutex); | |
f0c91038 EL |
84 | if (hdev->shutting_down) |
85 | goto exit; | |
8b8d2e08 EL |
86 | |
87 | if (hdev->cmd_pending_msg) { | |
88 | if (timer_pending(&hdev->cmd_timer) == 0) { | |
89 | if (hdev->cmd_pending_msg->cb) | |
b5faa648 | 90 | hdev->cmd_pending_msg->cb(hdev-> |
8b8d2e08 | 91 | cmd_pending_msg-> |
b5faa648 EL |
92 | cb_context, |
93 | NULL, | |
94 | -ETIME); | |
8b8d2e08 EL |
95 | kfree(hdev->cmd_pending_msg); |
96 | hdev->cmd_pending_msg = NULL; | |
0f450772 | 97 | } else { |
8b8d2e08 | 98 | goto exit; |
0f450772 | 99 | } |
8b8d2e08 EL |
100 | } |
101 | ||
102 | next_msg: | |
103 | if (list_empty(&hdev->msg_tx_queue)) | |
104 | goto exit; | |
105 | ||
106 | msg = list_first_entry(&hdev->msg_tx_queue, struct hci_msg, msg_l); | |
107 | list_del(&msg->msg_l); | |
108 | ||
109 | pr_debug("msg_tx_queue has a cmd to send\n"); | |
110 | while ((skb = skb_dequeue(&msg->msg_frags)) != NULL) { | |
412fda53 | 111 | r = nfc_llc_xmit_from_hci(hdev->llc, skb); |
8b8d2e08 EL |
112 | if (r < 0) { |
113 | kfree_skb(skb); | |
114 | skb_queue_purge(&msg->msg_frags); | |
115 | if (msg->cb) | |
b5faa648 | 116 | msg->cb(msg->cb_context, NULL, r); |
8b8d2e08 EL |
117 | kfree(msg); |
118 | break; | |
119 | } | |
120 | } | |
121 | ||
122 | if (r) | |
123 | goto next_msg; | |
124 | ||
125 | if (msg->wait_response == false) { | |
126 | kfree(msg); | |
127 | goto next_msg; | |
128 | } | |
129 | ||
130 | hdev->cmd_pending_msg = msg; | |
131 | mod_timer(&hdev->cmd_timer, jiffies + | |
132 | msecs_to_jiffies(hdev->cmd_pending_msg->completion_delay)); | |
133 | ||
134 | exit: | |
135 | mutex_unlock(&hdev->msg_tx_mutex); | |
136 | } | |
137 | ||
138 | static void nfc_hci_msg_rx_work(struct work_struct *work) | |
139 | { | |
140 | struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev, | |
141 | msg_rx_work); | |
142 | struct sk_buff *skb; | |
143 | struct hcp_message *message; | |
144 | u8 pipe; | |
145 | u8 type; | |
146 | u8 instruction; | |
147 | ||
148 | while ((skb = skb_dequeue(&hdev->msg_rx_queue)) != NULL) { | |
149 | pipe = skb->data[0]; | |
150 | skb_pull(skb, NFC_HCI_HCP_PACKET_HEADER_LEN); | |
151 | message = (struct hcp_message *)skb->data; | |
152 | type = HCP_MSG_GET_TYPE(message->header); | |
153 | instruction = HCP_MSG_GET_CMD(message->header); | |
154 | skb_pull(skb, NFC_HCI_HCP_MESSAGE_HEADER_LEN); | |
155 | ||
156 | nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, skb); | |
157 | } | |
158 | } | |
159 | ||
ccca0d6e EL |
160 | static void __nfc_hci_cmd_completion(struct nfc_hci_dev *hdev, int err, |
161 | struct sk_buff *skb) | |
8b8d2e08 | 162 | { |
8b8d2e08 EL |
163 | del_timer_sync(&hdev->cmd_timer); |
164 | ||
165 | if (hdev->cmd_pending_msg->cb) | |
b5faa648 EL |
166 | hdev->cmd_pending_msg->cb(hdev->cmd_pending_msg->cb_context, |
167 | skb, err); | |
8b8d2e08 EL |
168 | else |
169 | kfree_skb(skb); | |
170 | ||
171 | kfree(hdev->cmd_pending_msg); | |
172 | hdev->cmd_pending_msg = NULL; | |
173 | ||
916082b0 | 174 | schedule_work(&hdev->msg_tx_work); |
ccca0d6e EL |
175 | } |
176 | ||
177 | void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result, | |
178 | struct sk_buff *skb) | |
179 | { | |
180 | mutex_lock(&hdev->msg_tx_mutex); | |
181 | ||
182 | if (hdev->cmd_pending_msg == NULL) { | |
183 | kfree_skb(skb); | |
184 | goto exit; | |
185 | } | |
186 | ||
187 | __nfc_hci_cmd_completion(hdev, nfc_hci_result_to_errno(result), skb); | |
8b8d2e08 EL |
188 | |
189 | exit: | |
190 | mutex_unlock(&hdev->msg_tx_mutex); | |
191 | } | |
192 | ||
193 | void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd, | |
194 | struct sk_buff *skb) | |
195 | { | |
118278f2 | 196 | u8 gate = hdev->pipes[pipe].gate; |
615b524a CR |
197 | u8 status = NFC_HCI_ANY_OK; |
198 | struct hci_create_pipe_resp *create_info; | |
199 | struct hci_delete_pipe_noti *delete_info; | |
200 | struct hci_all_pipe_cleared_noti *cleared_info; | |
deff5aa4 CR |
201 | |
202 | pr_debug("from gate %x pipe %x cmd %x\n", gate, pipe, cmd); | |
203 | ||
204 | switch (cmd) { | |
205 | case NFC_HCI_ADM_NOTIFY_PIPE_CREATED: | |
206 | if (skb->len != 5) { | |
615b524a CR |
207 | status = NFC_HCI_ANY_E_NOK; |
208 | goto exit; | |
deff5aa4 | 209 | } |
615b524a | 210 | create_info = (struct hci_create_pipe_resp *)skb->data; |
deff5aa4 | 211 | |
615b524a | 212 | /* Save the new created pipe and bind with local gate, |
deff5aa4 CR |
213 | * the description for skb->data[3] is destination gate id |
214 | * but since we received this cmd from host controller, we | |
215 | * are the destination and it is our local gate | |
216 | */ | |
615b524a CR |
217 | hdev->gate2pipe[create_info->dest_gate] = create_info->pipe; |
218 | hdev->pipes[create_info->pipe].gate = create_info->dest_gate; | |
219 | hdev->pipes[create_info->pipe].dest_host = | |
220 | create_info->src_host; | |
deff5aa4 CR |
221 | break; |
222 | case NFC_HCI_ANY_OPEN_PIPE: | |
615b524a CR |
223 | if (gate == NFC_HCI_INVALID_GATE) { |
224 | status = NFC_HCI_ANY_E_NOK; | |
225 | goto exit; | |
226 | } | |
227 | break; | |
228 | case NFC_HCI_ADM_NOTIFY_PIPE_DELETED: | |
229 | if (skb->len != 1) { | |
230 | status = NFC_HCI_ANY_E_NOK; | |
231 | goto exit; | |
232 | } | |
233 | delete_info = (struct hci_delete_pipe_noti *)skb->data; | |
234 | ||
235 | hdev->pipes[delete_info->pipe].gate = NFC_HCI_INVALID_GATE; | |
236 | hdev->pipes[delete_info->pipe].dest_host = NFC_HCI_INVALID_HOST; | |
deff5aa4 | 237 | break; |
a2ae2182 | 238 | case NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED: |
615b524a CR |
239 | if (skb->len != 1) { |
240 | status = NFC_HCI_ANY_E_NOK; | |
241 | goto exit; | |
242 | } | |
243 | cleared_info = (struct hci_all_pipe_cleared_noti *)skb->data; | |
af775223 | 244 | |
615b524a | 245 | nfc_hci_reset_pipes_per_host(hdev, cleared_info->host); |
a2ae2182 | 246 | break; |
deff5aa4 CR |
247 | default: |
248 | pr_info("Discarded unknown cmd %x to gate %x\n", cmd, gate); | |
deff5aa4 CR |
249 | break; |
250 | } | |
251 | ||
8409e428 CR |
252 | if (hdev->ops->cmd_received) |
253 | hdev->ops->cmd_received(hdev, pipe, cmd, skb); | |
254 | ||
615b524a CR |
255 | exit: |
256 | nfc_hci_hcp_message_tx(hdev, pipe, NFC_HCI_HCP_RESPONSE, | |
257 | status, NULL, 0, NULL, NULL, 0); | |
258 | ||
8b8d2e08 EL |
259 | kfree_skb(skb); |
260 | } | |
261 | ||
9c5121a0 | 262 | u32 nfc_hci_sak_to_protocol(u8 sak) |
8b8d2e08 EL |
263 | { |
264 | switch (NFC_HCI_TYPE_A_SEL_PROT(sak)) { | |
265 | case NFC_HCI_TYPE_A_SEL_PROT_MIFARE: | |
266 | return NFC_PROTO_MIFARE_MASK; | |
267 | case NFC_HCI_TYPE_A_SEL_PROT_ISO14443: | |
268 | return NFC_PROTO_ISO14443_MASK; | |
269 | case NFC_HCI_TYPE_A_SEL_PROT_DEP: | |
270 | return NFC_PROTO_NFC_DEP_MASK; | |
271 | case NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP: | |
272 | return NFC_PROTO_ISO14443_MASK | NFC_PROTO_NFC_DEP_MASK; | |
273 | default: | |
274 | return 0xffffffff; | |
275 | } | |
276 | } | |
9c5121a0 | 277 | EXPORT_SYMBOL(nfc_hci_sak_to_protocol); |
8b8d2e08 | 278 | |
f7a5f6c5 | 279 | int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate) |
8b8d2e08 EL |
280 | { |
281 | struct nfc_target *targets; | |
282 | struct sk_buff *atqa_skb = NULL; | |
283 | struct sk_buff *sak_skb = NULL; | |
81b30395 | 284 | struct sk_buff *uid_skb = NULL; |
8b8d2e08 EL |
285 | int r; |
286 | ||
287 | pr_debug("from gate %d\n", gate); | |
288 | ||
289 | targets = kzalloc(sizeof(struct nfc_target), GFP_KERNEL); | |
290 | if (targets == NULL) | |
291 | return -ENOMEM; | |
292 | ||
293 | switch (gate) { | |
294 | case NFC_HCI_RF_READER_A_GATE: | |
295 | r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE, | |
296 | NFC_HCI_RF_READER_A_ATQA, &atqa_skb); | |
297 | if (r < 0) | |
298 | goto exit; | |
299 | ||
300 | r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE, | |
301 | NFC_HCI_RF_READER_A_SAK, &sak_skb); | |
302 | if (r < 0) | |
303 | goto exit; | |
304 | ||
305 | if (atqa_skb->len != 2 || sak_skb->len != 1) { | |
306 | r = -EPROTO; | |
307 | goto exit; | |
308 | } | |
309 | ||
310 | targets->supported_protocols = | |
311 | nfc_hci_sak_to_protocol(sak_skb->data[0]); | |
312 | if (targets->supported_protocols == 0xffffffff) { | |
313 | r = -EPROTO; | |
314 | goto exit; | |
315 | } | |
316 | ||
74157ef5 | 317 | targets->sens_res = be16_to_cpu(*(__be16 *)atqa_skb->data); |
8b8d2e08 EL |
318 | targets->sel_res = sak_skb->data[0]; |
319 | ||
81b30395 EL |
320 | r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE, |
321 | NFC_HCI_RF_READER_A_UID, &uid_skb); | |
322 | if (r < 0) | |
323 | goto exit; | |
324 | ||
325 | if (uid_skb->len == 0 || uid_skb->len > NFC_NFCID1_MAXSIZE) { | |
326 | r = -EPROTO; | |
327 | goto exit; | |
328 | } | |
329 | ||
330 | memcpy(targets->nfcid1, uid_skb->data, uid_skb->len); | |
331 | targets->nfcid1_len = uid_skb->len; | |
332 | ||
8b8d2e08 EL |
333 | if (hdev->ops->complete_target_discovered) { |
334 | r = hdev->ops->complete_target_discovered(hdev, gate, | |
335 | targets); | |
336 | if (r < 0) | |
337 | goto exit; | |
338 | } | |
339 | break; | |
340 | case NFC_HCI_RF_READER_B_GATE: | |
01d719a2 | 341 | targets->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
8b8d2e08 EL |
342 | break; |
343 | default: | |
344 | if (hdev->ops->target_from_gate) | |
345 | r = hdev->ops->target_from_gate(hdev, gate, targets); | |
346 | else | |
347 | r = -EPROTO; | |
348 | if (r < 0) | |
349 | goto exit; | |
350 | ||
351 | if (hdev->ops->complete_target_discovered) { | |
352 | r = hdev->ops->complete_target_discovered(hdev, gate, | |
353 | targets); | |
354 | if (r < 0) | |
355 | goto exit; | |
356 | } | |
357 | break; | |
358 | } | |
359 | ||
928326f2 AW |
360 | /* if driver set the new gate, we will skip the old one */ |
361 | if (targets->hci_reader_gate == 0x00) | |
362 | targets->hci_reader_gate = gate; | |
8b8d2e08 EL |
363 | |
364 | r = nfc_targets_found(hdev->ndev, targets, 1); | |
8b8d2e08 EL |
365 | |
366 | exit: | |
367 | kfree(targets); | |
368 | kfree_skb(atqa_skb); | |
369 | kfree_skb(sak_skb); | |
81b30395 | 370 | kfree_skb(uid_skb); |
8b8d2e08 EL |
371 | |
372 | return r; | |
373 | } | |
f7a5f6c5 | 374 | EXPORT_SYMBOL(nfc_hci_target_discovered); |
8b8d2e08 EL |
375 | |
376 | void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event, | |
377 | struct sk_buff *skb) | |
378 | { | |
379 | int r = 0; | |
118278f2 | 380 | u8 gate = hdev->pipes[pipe].gate; |
74a5b966 | 381 | |
118278f2 | 382 | if (gate == NFC_HCI_INVALID_GATE) { |
74a5b966 EL |
383 | pr_err("Discarded event %x to unopened pipe %x\n", event, pipe); |
384 | goto exit; | |
385 | } | |
8b8d2e08 | 386 | |
40d06d36 | 387 | if (hdev->ops->event_received) { |
fda7a49c | 388 | r = hdev->ops->event_received(hdev, pipe, event, skb); |
40d06d36 EL |
389 | if (r <= 0) |
390 | goto exit_noskb; | |
391 | } | |
392 | ||
8b8d2e08 EL |
393 | switch (event) { |
394 | case NFC_HCI_EVT_TARGET_DISCOVERED: | |
8b8d2e08 EL |
395 | if (skb->len < 1) { /* no status data? */ |
396 | r = -EPROTO; | |
397 | goto exit; | |
398 | } | |
399 | ||
400 | if (skb->data[0] == 3) { | |
401 | /* TODO: Multiple targets in field, none activated | |
402 | * poll is supposedly stopped, but there is no | |
403 | * single target to activate, so nothing to report | |
404 | * up. | |
405 | * if we need to restart poll, we must save the | |
406 | * protocols from the initial poll and reuse here. | |
407 | */ | |
408 | } | |
409 | ||
410 | if (skb->data[0] != 0) { | |
411 | r = -EPROTO; | |
412 | goto exit; | |
413 | } | |
414 | ||
74a5b966 | 415 | r = nfc_hci_target_discovered(hdev, gate); |
8b8d2e08 EL |
416 | break; |
417 | default: | |
40d06d36 EL |
418 | pr_info("Discarded unknown event %x to gate %x\n", event, gate); |
419 | r = -EINVAL; | |
8b8d2e08 EL |
420 | break; |
421 | } | |
422 | ||
423 | exit: | |
424 | kfree_skb(skb); | |
425 | ||
27c31191 | 426 | exit_noskb: |
249eb5bd SO |
427 | if (r) |
428 | nfc_hci_driver_failure(hdev, r); | |
8b8d2e08 EL |
429 | } |
430 | ||
431 | static void nfc_hci_cmd_timeout(unsigned long data) | |
432 | { | |
433 | struct nfc_hci_dev *hdev = (struct nfc_hci_dev *)data; | |
434 | ||
916082b0 | 435 | schedule_work(&hdev->msg_tx_work); |
8b8d2e08 EL |
436 | } |
437 | ||
438 | static int hci_dev_connect_gates(struct nfc_hci_dev *hdev, u8 gate_count, | |
a10d595b | 439 | struct nfc_hci_gate *gates) |
8b8d2e08 EL |
440 | { |
441 | int r; | |
8b8d2e08 | 442 | while (gate_count--) { |
a10d595b EL |
443 | r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID, |
444 | gates->gate, gates->pipe); | |
8b8d2e08 EL |
445 | if (r < 0) |
446 | return r; | |
a10d595b | 447 | gates++; |
8b8d2e08 EL |
448 | } |
449 | ||
450 | return 0; | |
451 | } | |
452 | ||
453 | static int hci_dev_session_init(struct nfc_hci_dev *hdev) | |
454 | { | |
455 | struct sk_buff *skb = NULL; | |
456 | int r; | |
a10d595b EL |
457 | |
458 | if (hdev->init_data.gates[0].gate != NFC_HCI_ADMIN_GATE) | |
459 | return -EPROTO; | |
8b8d2e08 EL |
460 | |
461 | r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID, | |
a10d595b EL |
462 | hdev->init_data.gates[0].gate, |
463 | hdev->init_data.gates[0].pipe); | |
8b8d2e08 EL |
464 | if (r < 0) |
465 | goto exit; | |
466 | ||
467 | r = nfc_hci_get_param(hdev, NFC_HCI_ADMIN_GATE, | |
468 | NFC_HCI_ADMIN_SESSION_IDENTITY, &skb); | |
469 | if (r < 0) | |
470 | goto disconnect_all; | |
471 | ||
e240bc36 CR |
472 | if (skb->len && skb->len == strlen(hdev->init_data.session_id) && |
473 | (memcmp(hdev->init_data.session_id, skb->data, | |
474 | skb->len) == 0) && hdev->ops->load_session) { | |
475 | /* Restore gate<->pipe table from some proprietary location. */ | |
8b8d2e08 | 476 | |
e240bc36 | 477 | r = hdev->ops->load_session(hdev); |
8b8d2e08 | 478 | |
e240bc36 CR |
479 | if (r < 0) |
480 | goto disconnect_all; | |
481 | } else { | |
8b8d2e08 | 482 | |
e240bc36 CR |
483 | r = nfc_hci_disconnect_all_gates(hdev); |
484 | if (r < 0) | |
485 | goto exit; | |
8b8d2e08 | 486 | |
e240bc36 CR |
487 | r = hci_dev_connect_gates(hdev, hdev->init_data.gate_count, |
488 | hdev->init_data.gates); | |
489 | if (r < 0) | |
490 | goto disconnect_all; | |
491 | ||
492 | r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE, | |
493 | NFC_HCI_ADMIN_SESSION_IDENTITY, | |
494 | hdev->init_data.session_id, | |
495 | strlen(hdev->init_data.session_id)); | |
496 | } | |
8b8d2e08 EL |
497 | if (r == 0) |
498 | goto exit; | |
499 | ||
500 | disconnect_all: | |
501 | nfc_hci_disconnect_all_gates(hdev); | |
502 | ||
503 | exit: | |
33e59713 | 504 | kfree_skb(skb); |
8b8d2e08 EL |
505 | |
506 | return r; | |
507 | } | |
508 | ||
509 | static int hci_dev_version(struct nfc_hci_dev *hdev) | |
510 | { | |
511 | int r; | |
512 | struct sk_buff *skb; | |
513 | ||
514 | r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE, | |
515 | NFC_HCI_ID_MGMT_VERSION_SW, &skb); | |
23f7e6d0 EL |
516 | if (r == -EOPNOTSUPP) { |
517 | pr_info("Software/Hardware info not available\n"); | |
518 | return 0; | |
519 | } | |
8b8d2e08 EL |
520 | if (r < 0) |
521 | return r; | |
522 | ||
523 | if (skb->len != 3) { | |
524 | kfree_skb(skb); | |
525 | return -EINVAL; | |
526 | } | |
527 | ||
528 | hdev->sw_romlib = (skb->data[0] & 0xf0) >> 4; | |
529 | hdev->sw_patch = skb->data[0] & 0x0f; | |
530 | hdev->sw_flashlib_major = skb->data[1]; | |
531 | hdev->sw_flashlib_minor = skb->data[2]; | |
532 | ||
533 | kfree_skb(skb); | |
534 | ||
535 | r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE, | |
536 | NFC_HCI_ID_MGMT_VERSION_HW, &skb); | |
537 | if (r < 0) | |
538 | return r; | |
539 | ||
540 | if (skb->len != 3) { | |
541 | kfree_skb(skb); | |
542 | return -EINVAL; | |
543 | } | |
544 | ||
545 | hdev->hw_derivative = (skb->data[0] & 0xe0) >> 5; | |
546 | hdev->hw_version = skb->data[0] & 0x1f; | |
547 | hdev->hw_mpw = (skb->data[1] & 0xc0) >> 6; | |
548 | hdev->hw_software = skb->data[1] & 0x3f; | |
549 | hdev->hw_bsid = skb->data[2]; | |
550 | ||
551 | kfree_skb(skb); | |
552 | ||
553 | pr_info("SOFTWARE INFO:\n"); | |
554 | pr_info("RomLib : %d\n", hdev->sw_romlib); | |
555 | pr_info("Patch : %d\n", hdev->sw_patch); | |
556 | pr_info("FlashLib Major : %d\n", hdev->sw_flashlib_major); | |
557 | pr_info("FlashLib Minor : %d\n", hdev->sw_flashlib_minor); | |
558 | pr_info("HARDWARE INFO:\n"); | |
559 | pr_info("Derivative : %d\n", hdev->hw_derivative); | |
560 | pr_info("HW Version : %d\n", hdev->hw_version); | |
561 | pr_info("#MPW : %d\n", hdev->hw_mpw); | |
562 | pr_info("Software : %d\n", hdev->hw_software); | |
563 | pr_info("BSID Version : %d\n", hdev->hw_bsid); | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | static int hci_dev_up(struct nfc_dev *nfc_dev) | |
569 | { | |
570 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
571 | int r = 0; | |
572 | ||
573 | if (hdev->ops->open) { | |
574 | r = hdev->ops->open(hdev); | |
575 | if (r < 0) | |
576 | return r; | |
577 | } | |
578 | ||
412fda53 EL |
579 | r = nfc_llc_start(hdev->llc); |
580 | if (r < 0) | |
581 | goto exit_close; | |
582 | ||
8b8d2e08 EL |
583 | r = hci_dev_session_init(hdev); |
584 | if (r < 0) | |
412fda53 | 585 | goto exit_llc; |
8b8d2e08 EL |
586 | |
587 | r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE, | |
588 | NFC_HCI_EVT_END_OPERATION, NULL, 0); | |
589 | if (r < 0) | |
412fda53 | 590 | goto exit_llc; |
8b8d2e08 EL |
591 | |
592 | if (hdev->ops->hci_ready) { | |
593 | r = hdev->ops->hci_ready(hdev); | |
594 | if (r < 0) | |
412fda53 | 595 | goto exit_llc; |
8b8d2e08 EL |
596 | } |
597 | ||
598 | r = hci_dev_version(hdev); | |
599 | if (r < 0) | |
412fda53 EL |
600 | goto exit_llc; |
601 | ||
602 | return 0; | |
603 | ||
604 | exit_llc: | |
605 | nfc_llc_stop(hdev->llc); | |
606 | ||
607 | exit_close: | |
608 | if (hdev->ops->close) | |
609 | hdev->ops->close(hdev); | |
8b8d2e08 | 610 | |
8b8d2e08 EL |
611 | return r; |
612 | } | |
613 | ||
614 | static int hci_dev_down(struct nfc_dev *nfc_dev) | |
615 | { | |
616 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
617 | ||
412fda53 EL |
618 | nfc_llc_stop(hdev->llc); |
619 | ||
8b8d2e08 EL |
620 | if (hdev->ops->close) |
621 | hdev->ops->close(hdev); | |
622 | ||
118278f2 | 623 | nfc_hci_reset_pipes(hdev); |
8b8d2e08 EL |
624 | |
625 | return 0; | |
626 | } | |
627 | ||
fe7c5800 SO |
628 | static int hci_start_poll(struct nfc_dev *nfc_dev, |
629 | u32 im_protocols, u32 tm_protocols) | |
8b8d2e08 EL |
630 | { |
631 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
8b8d2e08 EL |
632 | |
633 | if (hdev->ops->start_poll) | |
fe7c5800 | 634 | return hdev->ops->start_poll(hdev, im_protocols, tm_protocols); |
8b8d2e08 | 635 | else |
03bed29e | 636 | return nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE, |
0f450772 SJ |
637 | NFC_HCI_EVT_READER_REQUESTED, |
638 | NULL, 0); | |
8b8d2e08 EL |
639 | } |
640 | ||
641 | static void hci_stop_poll(struct nfc_dev *nfc_dev) | |
642 | { | |
643 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
644 | ||
95f7687b CR |
645 | if (hdev->ops->stop_poll) |
646 | hdev->ops->stop_poll(hdev); | |
647 | else | |
648 | nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE, | |
649 | NFC_HCI_EVT_END_OPERATION, NULL, 0); | |
8b8d2e08 EL |
650 | } |
651 | ||
c40d1740 AW |
652 | static int hci_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
653 | __u8 comm_mode, __u8 *gb, size_t gb_len) | |
654 | { | |
655 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
656 | ||
a395298c SO |
657 | if (!hdev->ops->dep_link_up) |
658 | return 0; | |
c40d1740 | 659 | |
a395298c SO |
660 | return hdev->ops->dep_link_up(hdev, target, comm_mode, |
661 | gb, gb_len); | |
c40d1740 AW |
662 | } |
663 | ||
664 | static int hci_dep_link_down(struct nfc_dev *nfc_dev) | |
665 | { | |
666 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
667 | ||
a395298c SO |
668 | if (!hdev->ops->dep_link_down) |
669 | return 0; | |
c40d1740 | 670 | |
a395298c | 671 | return hdev->ops->dep_link_down(hdev); |
c40d1740 AW |
672 | } |
673 | ||
90099433 EL |
674 | static int hci_activate_target(struct nfc_dev *nfc_dev, |
675 | struct nfc_target *target, u32 protocol) | |
8b8d2e08 | 676 | { |
8b8d2e08 EL |
677 | return 0; |
678 | } | |
679 | ||
90099433 | 680 | static void hci_deactivate_target(struct nfc_dev *nfc_dev, |
96d4581f CR |
681 | struct nfc_target *target, |
682 | u8 mode) | |
8b8d2e08 EL |
683 | { |
684 | } | |
685 | ||
f3e8fb55 EL |
686 | #define HCI_CB_TYPE_TRANSCEIVE 1 |
687 | ||
688 | static void hci_transceive_cb(void *context, struct sk_buff *skb, int err) | |
689 | { | |
690 | struct nfc_hci_dev *hdev = context; | |
691 | ||
692 | switch (hdev->async_cb_type) { | |
693 | case HCI_CB_TYPE_TRANSCEIVE: | |
694 | /* | |
695 | * TODO: Check RF Error indicator to make sure data is valid. | |
696 | * It seems that HCI cmd can complete without error, but data | |
697 | * can be invalid if an RF error occured? Ignore for now. | |
698 | */ | |
699 | if (err == 0) | |
700 | skb_trim(skb, skb->len - 1); /* RF Err ind */ | |
701 | ||
702 | hdev->async_cb(hdev->async_cb_context, skb, err); | |
703 | break; | |
704 | default: | |
705 | if (err == 0) | |
706 | kfree_skb(skb); | |
707 | break; | |
708 | } | |
709 | } | |
710 | ||
be9ae4ce SO |
711 | static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target, |
712 | struct sk_buff *skb, data_exchange_cb_t cb, | |
713 | void *cb_context) | |
8b8d2e08 EL |
714 | { |
715 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
716 | int r; | |
8b8d2e08 | 717 | |
90099433 | 718 | pr_debug("target_idx=%d\n", target->idx); |
8b8d2e08 EL |
719 | |
720 | switch (target->hci_reader_gate) { | |
721 | case NFC_HCI_RF_READER_A_GATE: | |
722 | case NFC_HCI_RF_READER_B_GATE: | |
e8107623 AW |
723 | if (hdev->ops->im_transceive) { |
724 | r = hdev->ops->im_transceive(hdev, target, skb, cb, | |
f3e8fb55 | 725 | cb_context); |
8b8d2e08 EL |
726 | if (r <= 0) /* handled */ |
727 | break; | |
728 | } | |
729 | ||
730 | *skb_push(skb, 1) = 0; /* CTR, see spec:10.2.2.1 */ | |
f3e8fb55 EL |
731 | |
732 | hdev->async_cb_type = HCI_CB_TYPE_TRANSCEIVE; | |
733 | hdev->async_cb = cb; | |
734 | hdev->async_cb_context = cb_context; | |
735 | ||
736 | r = nfc_hci_send_cmd_async(hdev, target->hci_reader_gate, | |
737 | NFC_HCI_WR_XCHG_DATA, skb->data, | |
738 | skb->len, hci_transceive_cb, hdev); | |
8b8d2e08 EL |
739 | break; |
740 | default: | |
e8107623 AW |
741 | if (hdev->ops->im_transceive) { |
742 | r = hdev->ops->im_transceive(hdev, target, skb, cb, | |
f3e8fb55 | 743 | cb_context); |
8b8d2e08 EL |
744 | if (r == 1) |
745 | r = -ENOTSUPP; | |
0f450772 | 746 | } else { |
8b8d2e08 | 747 | r = -ENOTSUPP; |
0f450772 | 748 | } |
f3e8fb55 | 749 | break; |
8b8d2e08 EL |
750 | } |
751 | ||
752 | kfree_skb(skb); | |
753 | ||
f3e8fb55 | 754 | return r; |
8b8d2e08 EL |
755 | } |
756 | ||
984d334f | 757 | static int hci_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) |
e8107623 AW |
758 | { |
759 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
760 | ||
a395298c SO |
761 | if (!hdev->ops->tm_send) { |
762 | kfree_skb(skb); | |
763 | return -ENOTSUPP; | |
764 | } | |
924d4a02 | 765 | |
a395298c | 766 | return hdev->ops->tm_send(hdev, skb); |
e8107623 AW |
767 | } |
768 | ||
1676f751 EL |
769 | static int hci_check_presence(struct nfc_dev *nfc_dev, |
770 | struct nfc_target *target) | |
771 | { | |
772 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
773 | ||
a395298c SO |
774 | if (!hdev->ops->check_presence) |
775 | return 0; | |
1676f751 | 776 | |
a395298c | 777 | return hdev->ops->check_presence(hdev, target); |
1676f751 EL |
778 | } |
779 | ||
0a946301 SO |
780 | static int hci_discover_se(struct nfc_dev *nfc_dev) |
781 | { | |
782 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
783 | ||
784 | if (hdev->ops->discover_se) | |
785 | return hdev->ops->discover_se(hdev); | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
790 | static int hci_enable_se(struct nfc_dev *nfc_dev, u32 se_idx) | |
791 | { | |
792 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
793 | ||
794 | if (hdev->ops->enable_se) | |
795 | return hdev->ops->enable_se(hdev, se_idx); | |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | static int hci_disable_se(struct nfc_dev *nfc_dev, u32 se_idx) | |
801 | { | |
802 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
803 | ||
804 | if (hdev->ops->disable_se) | |
4eba11e8 | 805 | return hdev->ops->disable_se(hdev, se_idx); |
0a946301 SO |
806 | |
807 | return 0; | |
808 | } | |
809 | ||
9b8d32b7 CR |
810 | static int hci_se_io(struct nfc_dev *nfc_dev, u32 se_idx, |
811 | u8 *apdu, size_t apdu_length, | |
812 | se_io_cb_t cb, void *cb_context) | |
813 | { | |
814 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
815 | ||
816 | if (hdev->ops->se_io) | |
817 | return hdev->ops->se_io(hdev, se_idx, apdu, | |
818 | apdu_length, cb, cb_context); | |
819 | ||
820 | return 0; | |
821 | } | |
822 | ||
412fda53 EL |
823 | static void nfc_hci_failure(struct nfc_hci_dev *hdev, int err) |
824 | { | |
825 | mutex_lock(&hdev->msg_tx_mutex); | |
826 | ||
827 | if (hdev->cmd_pending_msg == NULL) { | |
828 | nfc_driver_failure(hdev->ndev, err); | |
829 | goto exit; | |
830 | } | |
831 | ||
832 | __nfc_hci_cmd_completion(hdev, err, NULL); | |
833 | ||
834 | exit: | |
835 | mutex_unlock(&hdev->msg_tx_mutex); | |
836 | } | |
837 | ||
838 | static void nfc_hci_llc_failure(struct nfc_hci_dev *hdev, int err) | |
839 | { | |
840 | nfc_hci_failure(hdev, err); | |
841 | } | |
842 | ||
843 | static void nfc_hci_recv_from_llc(struct nfc_hci_dev *hdev, struct sk_buff *skb) | |
844 | { | |
845 | struct hcp_packet *packet; | |
846 | u8 type; | |
847 | u8 instruction; | |
848 | struct sk_buff *hcp_skb; | |
849 | u8 pipe; | |
850 | struct sk_buff *frag_skb; | |
851 | int msg_len; | |
852 | ||
853 | packet = (struct hcp_packet *)skb->data; | |
854 | if ((packet->header & ~NFC_HCI_FRAGMENT) == 0) { | |
855 | skb_queue_tail(&hdev->rx_hcp_frags, skb); | |
856 | return; | |
857 | } | |
858 | ||
859 | /* it's the last fragment. Does it need re-aggregation? */ | |
860 | if (skb_queue_len(&hdev->rx_hcp_frags)) { | |
861 | pipe = packet->header & NFC_HCI_FRAGMENT; | |
862 | skb_queue_tail(&hdev->rx_hcp_frags, skb); | |
863 | ||
864 | msg_len = 0; | |
865 | skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) { | |
866 | msg_len += (frag_skb->len - | |
867 | NFC_HCI_HCP_PACKET_HEADER_LEN); | |
868 | } | |
869 | ||
870 | hcp_skb = nfc_alloc_recv_skb(NFC_HCI_HCP_PACKET_HEADER_LEN + | |
871 | msg_len, GFP_KERNEL); | |
872 | if (hcp_skb == NULL) { | |
873 | nfc_hci_failure(hdev, -ENOMEM); | |
874 | return; | |
875 | } | |
876 | ||
877 | *skb_put(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN) = pipe; | |
878 | ||
879 | skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) { | |
880 | msg_len = frag_skb->len - NFC_HCI_HCP_PACKET_HEADER_LEN; | |
881 | memcpy(skb_put(hcp_skb, msg_len), | |
882 | frag_skb->data + NFC_HCI_HCP_PACKET_HEADER_LEN, | |
883 | msg_len); | |
884 | } | |
885 | ||
886 | skb_queue_purge(&hdev->rx_hcp_frags); | |
887 | } else { | |
888 | packet->header &= NFC_HCI_FRAGMENT; | |
889 | hcp_skb = skb; | |
890 | } | |
891 | ||
892 | /* if this is a response, dispatch immediately to | |
893 | * unblock waiting cmd context. Otherwise, enqueue to dispatch | |
894 | * in separate context where handler can also execute command. | |
895 | */ | |
896 | packet = (struct hcp_packet *)hcp_skb->data; | |
897 | type = HCP_MSG_GET_TYPE(packet->message.header); | |
898 | if (type == NFC_HCI_HCP_RESPONSE) { | |
899 | pipe = packet->header; | |
900 | instruction = HCP_MSG_GET_CMD(packet->message.header); | |
901 | skb_pull(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN + | |
902 | NFC_HCI_HCP_MESSAGE_HEADER_LEN); | |
903 | nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, hcp_skb); | |
904 | } else { | |
905 | skb_queue_tail(&hdev->msg_rx_queue, hcp_skb); | |
916082b0 | 906 | schedule_work(&hdev->msg_rx_work); |
412fda53 EL |
907 | } |
908 | } | |
909 | ||
9ea7187c | 910 | static int hci_fw_download(struct nfc_dev *nfc_dev, const char *firmware_name) |
9a695d23 EL |
911 | { |
912 | struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev); | |
913 | ||
9ea7187c | 914 | if (!hdev->ops->fw_download) |
a395298c | 915 | return -ENOTSUPP; |
9a695d23 | 916 | |
9ea7187c | 917 | return hdev->ops->fw_download(hdev, firmware_name); |
9a695d23 EL |
918 | } |
919 | ||
bd007bea | 920 | static struct nfc_ops hci_nfc_ops = { |
8b8d2e08 EL |
921 | .dev_up = hci_dev_up, |
922 | .dev_down = hci_dev_down, | |
923 | .start_poll = hci_start_poll, | |
924 | .stop_poll = hci_stop_poll, | |
c40d1740 AW |
925 | .dep_link_up = hci_dep_link_up, |
926 | .dep_link_down = hci_dep_link_down, | |
8b8d2e08 EL |
927 | .activate_target = hci_activate_target, |
928 | .deactivate_target = hci_deactivate_target, | |
be9ae4ce | 929 | .im_transceive = hci_transceive, |
e8107623 | 930 | .tm_send = hci_tm_send, |
1676f751 | 931 | .check_presence = hci_check_presence, |
9ea7187c | 932 | .fw_download = hci_fw_download, |
0a946301 SO |
933 | .discover_se = hci_discover_se, |
934 | .enable_se = hci_enable_se, | |
935 | .disable_se = hci_disable_se, | |
9b8d32b7 | 936 | .se_io = hci_se_io, |
8b8d2e08 EL |
937 | }; |
938 | ||
939 | struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops, | |
940 | struct nfc_hci_init_data *init_data, | |
bf71ab8b | 941 | unsigned long quirks, |
8b8d2e08 | 942 | u32 protocols, |
412fda53 | 943 | const char *llc_name, |
8b8d2e08 EL |
944 | int tx_headroom, |
945 | int tx_tailroom, | |
946 | int max_link_payload) | |
947 | { | |
948 | struct nfc_hci_dev *hdev; | |
949 | ||
950 | if (ops->xmit == NULL) | |
951 | return NULL; | |
952 | ||
953 | if (protocols == 0) | |
954 | return NULL; | |
955 | ||
956 | hdev = kzalloc(sizeof(struct nfc_hci_dev), GFP_KERNEL); | |
957 | if (hdev == NULL) | |
958 | return NULL; | |
959 | ||
412fda53 EL |
960 | hdev->llc = nfc_llc_allocate(llc_name, hdev, ops->xmit, |
961 | nfc_hci_recv_from_llc, tx_headroom, | |
962 | tx_tailroom, nfc_hci_llc_failure); | |
963 | if (hdev->llc == NULL) { | |
964 | kfree(hdev); | |
965 | return NULL; | |
966 | } | |
967 | ||
0b456c41 | 968 | hdev->ndev = nfc_allocate_device(&hci_nfc_ops, protocols, |
8b8d2e08 EL |
969 | tx_headroom + HCI_CMDS_HEADROOM, |
970 | tx_tailroom); | |
971 | if (!hdev->ndev) { | |
412fda53 | 972 | nfc_llc_free(hdev->llc); |
8b8d2e08 EL |
973 | kfree(hdev); |
974 | return NULL; | |
975 | } | |
976 | ||
977 | hdev->ops = ops; | |
978 | hdev->max_data_link_payload = max_link_payload; | |
979 | hdev->init_data = *init_data; | |
980 | ||
981 | nfc_set_drvdata(hdev->ndev, hdev); | |
982 | ||
118278f2 | 983 | nfc_hci_reset_pipes(hdev); |
8b8d2e08 | 984 | |
bf71ab8b EL |
985 | hdev->quirks = quirks; |
986 | ||
8b8d2e08 EL |
987 | return hdev; |
988 | } | |
989 | EXPORT_SYMBOL(nfc_hci_allocate_device); | |
990 | ||
991 | void nfc_hci_free_device(struct nfc_hci_dev *hdev) | |
992 | { | |
993 | nfc_free_device(hdev->ndev); | |
412fda53 | 994 | nfc_llc_free(hdev->llc); |
8b8d2e08 EL |
995 | kfree(hdev); |
996 | } | |
997 | EXPORT_SYMBOL(nfc_hci_free_device); | |
998 | ||
999 | int nfc_hci_register_device(struct nfc_hci_dev *hdev) | |
1000 | { | |
8b8d2e08 EL |
1001 | mutex_init(&hdev->msg_tx_mutex); |
1002 | ||
1003 | INIT_LIST_HEAD(&hdev->msg_tx_queue); | |
1004 | ||
1005 | INIT_WORK(&hdev->msg_tx_work, nfc_hci_msg_tx_work); | |
8b8d2e08 EL |
1006 | |
1007 | init_timer(&hdev->cmd_timer); | |
1008 | hdev->cmd_timer.data = (unsigned long)hdev; | |
1009 | hdev->cmd_timer.function = nfc_hci_cmd_timeout; | |
1010 | ||
1011 | skb_queue_head_init(&hdev->rx_hcp_frags); | |
1012 | ||
1013 | INIT_WORK(&hdev->msg_rx_work, nfc_hci_msg_rx_work); | |
8b8d2e08 EL |
1014 | |
1015 | skb_queue_head_init(&hdev->msg_rx_queue); | |
1016 | ||
474fee3d | 1017 | return nfc_register_device(hdev->ndev); |
8b8d2e08 EL |
1018 | } |
1019 | EXPORT_SYMBOL(nfc_hci_register_device); | |
1020 | ||
1021 | void nfc_hci_unregister_device(struct nfc_hci_dev *hdev) | |
1022 | { | |
1913e57c | 1023 | struct hci_msg *msg, *n; |
8b8d2e08 | 1024 | |
f0c91038 EL |
1025 | mutex_lock(&hdev->msg_tx_mutex); |
1026 | ||
1027 | if (hdev->cmd_pending_msg) { | |
1028 | if (hdev->cmd_pending_msg->cb) | |
1029 | hdev->cmd_pending_msg->cb( | |
1030 | hdev->cmd_pending_msg->cb_context, | |
1031 | NULL, -ESHUTDOWN); | |
1032 | kfree(hdev->cmd_pending_msg); | |
1033 | hdev->cmd_pending_msg = NULL; | |
1034 | } | |
1035 | ||
1036 | hdev->shutting_down = true; | |
1037 | ||
1038 | mutex_unlock(&hdev->msg_tx_mutex); | |
1039 | ||
1040 | del_timer_sync(&hdev->cmd_timer); | |
1041 | cancel_work_sync(&hdev->msg_tx_work); | |
1042 | ||
1043 | cancel_work_sync(&hdev->msg_rx_work); | |
1044 | ||
1045 | nfc_unregister_device(hdev->ndev); | |
1046 | ||
8b8d2e08 EL |
1047 | skb_queue_purge(&hdev->rx_hcp_frags); |
1048 | skb_queue_purge(&hdev->msg_rx_queue); | |
1049 | ||
1913e57c | 1050 | list_for_each_entry_safe(msg, n, &hdev->msg_tx_queue, msg_l) { |
8b8d2e08 EL |
1051 | list_del(&msg->msg_l); |
1052 | skb_queue_purge(&msg->msg_frags); | |
1053 | kfree(msg); | |
1054 | } | |
8b8d2e08 EL |
1055 | } |
1056 | EXPORT_SYMBOL(nfc_hci_unregister_device); | |
1057 | ||
1058 | void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata) | |
1059 | { | |
1060 | hdev->clientdata = clientdata; | |
1061 | } | |
1062 | EXPORT_SYMBOL(nfc_hci_set_clientdata); | |
1063 | ||
1064 | void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev) | |
1065 | { | |
1066 | return hdev->clientdata; | |
1067 | } | |
1068 | EXPORT_SYMBOL(nfc_hci_get_clientdata); | |
1069 | ||
72b06f75 EL |
1070 | void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err) |
1071 | { | |
1072 | nfc_hci_failure(hdev, err); | |
1073 | } | |
a9a741a7 EL |
1074 | EXPORT_SYMBOL(nfc_hci_driver_failure); |
1075 | ||
0f450772 | 1076 | void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb) |
8b8d2e08 | 1077 | { |
412fda53 | 1078 | nfc_llc_rcv_from_drv(hdev->llc, skb); |
8b8d2e08 EL |
1079 | } |
1080 | EXPORT_SYMBOL(nfc_hci_recv_frame); | |
1081 | ||
67cccfe1 EL |
1082 | static int __init nfc_hci_init(void) |
1083 | { | |
1084 | return nfc_llc_init(); | |
1085 | } | |
1086 | ||
1087 | static void __exit nfc_hci_exit(void) | |
1088 | { | |
1089 | nfc_llc_exit(); | |
1090 | } | |
1091 | ||
412fda53 | 1092 | subsys_initcall(nfc_hci_init); |
67cccfe1 EL |
1093 | module_exit(nfc_hci_exit); |
1094 | ||
8b8d2e08 | 1095 | MODULE_LICENSE("GPL"); |
80faa598 | 1096 | MODULE_DESCRIPTION("NFC HCI Core"); |