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Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 | 2 | * |
0372a662 MH |
3 | * Bluetooth HCI UART driver |
4 | * | |
5 | * Copyright (C) 2000-2001 Qualcomm Incorporated | |
6 | * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> | |
8 | * | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
1da177e4 | 24 | */ |
1da177e4 | 25 | |
1da177e4 LT |
26 | #include <linux/module.h> |
27 | ||
28 | #include <linux/kernel.h> | |
29 | #include <linux/init.h> | |
1da177e4 LT |
30 | #include <linux/types.h> |
31 | #include <linux/fcntl.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/ptrace.h> | |
34 | #include <linux/poll.h> | |
35 | ||
36 | #include <linux/slab.h> | |
37 | #include <linux/tty.h> | |
38 | #include <linux/errno.h> | |
39 | #include <linux/string.h> | |
40 | #include <linux/signal.h> | |
41 | #include <linux/ioctl.h> | |
42 | #include <linux/skbuff.h> | |
43 | ||
44 | #include <net/bluetooth/bluetooth.h> | |
45 | #include <net/bluetooth/hci_core.h> | |
46 | ||
47 | #include "hci_uart.h" | |
48 | ||
0372a662 MH |
49 | #define VERSION "2.2" |
50 | ||
1da177e4 LT |
51 | static struct hci_uart_proto *hup[HCI_UART_MAX_PROTO]; |
52 | ||
53 | int hci_uart_register_proto(struct hci_uart_proto *p) | |
54 | { | |
55 | if (p->id >= HCI_UART_MAX_PROTO) | |
56 | return -EINVAL; | |
57 | ||
58 | if (hup[p->id]) | |
59 | return -EEXIST; | |
60 | ||
61 | hup[p->id] = p; | |
0372a662 | 62 | |
1da177e4 LT |
63 | return 0; |
64 | } | |
65 | ||
66 | int hci_uart_unregister_proto(struct hci_uart_proto *p) | |
67 | { | |
68 | if (p->id >= HCI_UART_MAX_PROTO) | |
69 | return -EINVAL; | |
70 | ||
71 | if (!hup[p->id]) | |
72 | return -EINVAL; | |
73 | ||
74 | hup[p->id] = NULL; | |
0372a662 | 75 | |
1da177e4 LT |
76 | return 0; |
77 | } | |
78 | ||
79 | static struct hci_uart_proto *hci_uart_get_proto(unsigned int id) | |
80 | { | |
81 | if (id >= HCI_UART_MAX_PROTO) | |
82 | return NULL; | |
0372a662 | 83 | |
1da177e4 LT |
84 | return hup[id]; |
85 | } | |
86 | ||
87 | static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type) | |
88 | { | |
89 | struct hci_dev *hdev = hu->hdev; | |
0372a662 | 90 | |
1da177e4 LT |
91 | /* Update HCI stat counters */ |
92 | switch (pkt_type) { | |
93 | case HCI_COMMAND_PKT: | |
94 | hdev->stat.cmd_tx++; | |
95 | break; | |
96 | ||
97 | case HCI_ACLDATA_PKT: | |
98 | hdev->stat.acl_tx++; | |
99 | break; | |
100 | ||
101 | case HCI_SCODATA_PKT: | |
7f8f2729 | 102 | hdev->stat.sco_tx++; |
1da177e4 LT |
103 | break; |
104 | } | |
105 | } | |
106 | ||
107 | static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu) | |
108 | { | |
109 | struct sk_buff *skb = hu->tx_skb; | |
0372a662 | 110 | |
1da177e4 LT |
111 | if (!skb) |
112 | skb = hu->proto->dequeue(hu); | |
113 | else | |
114 | hu->tx_skb = NULL; | |
0372a662 | 115 | |
1da177e4 LT |
116 | return skb; |
117 | } | |
118 | ||
119 | int hci_uart_tx_wakeup(struct hci_uart *hu) | |
120 | { | |
1da177e4 LT |
121 | if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) { |
122 | set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); | |
123 | return 0; | |
124 | } | |
125 | ||
126 | BT_DBG(""); | |
127 | ||
da64c27d FB |
128 | schedule_work(&hu->write_work); |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | static void hci_uart_write_work(struct work_struct *work) | |
134 | { | |
135 | struct hci_uart *hu = container_of(work, struct hci_uart, write_work); | |
136 | struct tty_struct *tty = hu->tty; | |
137 | struct hci_dev *hdev = hu->hdev; | |
138 | struct sk_buff *skb; | |
139 | ||
140 | /* REVISIT: should we cope with bad skbs or ->write() returning | |
141 | * and error value ? | |
142 | */ | |
143 | ||
1da177e4 LT |
144 | restart: |
145 | clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); | |
146 | ||
147 | while ((skb = hci_uart_dequeue(hu))) { | |
148 | int len; | |
0372a662 | 149 | |
1da177e4 | 150 | set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); |
f34d7a5b | 151 | len = tty->ops->write(tty, skb->data, skb->len); |
1da177e4 LT |
152 | hdev->stat.byte_tx += len; |
153 | ||
154 | skb_pull(skb, len); | |
155 | if (skb->len) { | |
156 | hu->tx_skb = skb; | |
157 | break; | |
158 | } | |
0372a662 | 159 | |
0d48d939 | 160 | hci_uart_tx_complete(hu, bt_cb(skb)->pkt_type); |
1da177e4 | 161 | kfree_skb(skb); |
0372a662 MH |
162 | } |
163 | ||
1da177e4 LT |
164 | if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state)) |
165 | goto restart; | |
166 | ||
167 | clear_bit(HCI_UART_SENDING, &hu->tx_state); | |
1da177e4 LT |
168 | } |
169 | ||
9f2aee84 JH |
170 | static void hci_uart_init_work(struct work_struct *work) |
171 | { | |
172 | struct hci_uart *hu = container_of(work, struct hci_uart, init_ready); | |
173 | int err; | |
174 | ||
175 | if (!test_and_clear_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) | |
176 | return; | |
177 | ||
178 | err = hci_register_dev(hu->hdev); | |
179 | if (err < 0) { | |
180 | BT_ERR("Can't register HCI device"); | |
181 | hci_free_dev(hu->hdev); | |
182 | hu->hdev = NULL; | |
183 | hu->proto->close(hu); | |
184 | } | |
185 | ||
186 | set_bit(HCI_UART_REGISTERED, &hu->flags); | |
187 | } | |
188 | ||
189 | int hci_uart_init_ready(struct hci_uart *hu) | |
190 | { | |
191 | if (!test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) | |
192 | return -EALREADY; | |
193 | ||
194 | schedule_work(&hu->init_ready); | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
1da177e4 LT |
199 | /* ------- Interface to HCI layer ------ */ |
200 | /* Initialize device */ | |
201 | static int hci_uart_open(struct hci_dev *hdev) | |
202 | { | |
203 | BT_DBG("%s %p", hdev->name, hdev); | |
204 | ||
205 | /* Nothing to do for UART driver */ | |
206 | ||
207 | set_bit(HCI_RUNNING, &hdev->flags); | |
0372a662 | 208 | |
1da177e4 LT |
209 | return 0; |
210 | } | |
211 | ||
212 | /* Reset device */ | |
213 | static int hci_uart_flush(struct hci_dev *hdev) | |
214 | { | |
155961e8 | 215 | struct hci_uart *hu = hci_get_drvdata(hdev); |
1da177e4 LT |
216 | struct tty_struct *tty = hu->tty; |
217 | ||
218 | BT_DBG("hdev %p tty %p", hdev, tty); | |
219 | ||
220 | if (hu->tx_skb) { | |
221 | kfree_skb(hu->tx_skb); hu->tx_skb = NULL; | |
222 | } | |
223 | ||
224 | /* Flush any pending characters in the driver and discipline. */ | |
225 | tty_ldisc_flush(tty); | |
f34d7a5b | 226 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
227 | |
228 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
229 | hu->proto->flush(hu); | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
234 | /* Close device */ | |
235 | static int hci_uart_close(struct hci_dev *hdev) | |
236 | { | |
237 | BT_DBG("hdev %p", hdev); | |
238 | ||
239 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
240 | return 0; | |
241 | ||
242 | hci_uart_flush(hdev); | |
3611f4d2 | 243 | hdev->flush = NULL; |
1da177e4 LT |
244 | return 0; |
245 | } | |
246 | ||
247 | /* Send frames from HCI layer */ | |
7bd8f09f | 248 | static int hci_uart_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 249 | { |
52bc423a | 250 | struct hci_uart *hu = hci_get_drvdata(hdev); |
1da177e4 LT |
251 | |
252 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
253 | return -EBUSY; | |
254 | ||
0d48d939 | 255 | BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
256 | |
257 | hu->proto->enqueue(hu, skb); | |
258 | ||
259 | hci_uart_tx_wakeup(hu); | |
0372a662 | 260 | |
1da177e4 LT |
261 | return 0; |
262 | } | |
263 | ||
1da177e4 LT |
264 | /* ------ LDISC part ------ */ |
265 | /* hci_uart_tty_open | |
1687dfc3 | 266 | * |
1da177e4 LT |
267 | * Called when line discipline changed to HCI_UART. |
268 | * | |
269 | * Arguments: | |
270 | * tty pointer to tty info structure | |
1687dfc3 | 271 | * Return Value: |
1da177e4 LT |
272 | * 0 if success, otherwise error code |
273 | */ | |
274 | static int hci_uart_tty_open(struct tty_struct *tty) | |
275 | { | |
f327b340 | 276 | struct hci_uart *hu; |
1da177e4 LT |
277 | |
278 | BT_DBG("tty %p", tty); | |
279 | ||
c19483cc AC |
280 | /* Error if the tty has no write op instead of leaving an exploitable |
281 | hole */ | |
282 | if (tty->ops->write == NULL) | |
283 | return -EOPNOTSUPP; | |
284 | ||
a08b15e6 VI |
285 | hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL); |
286 | if (!hu) { | |
7785162c | 287 | BT_ERR("Can't allocate control structure"); |
1da177e4 LT |
288 | return -ENFILE; |
289 | } | |
0372a662 | 290 | |
1da177e4 LT |
291 | tty->disc_data = hu; |
292 | hu->tty = tty; | |
33f0f88f | 293 | tty->receive_room = 65536; |
1da177e4 | 294 | |
9f2aee84 | 295 | INIT_WORK(&hu->init_ready, hci_uart_init_work); |
da64c27d | 296 | INIT_WORK(&hu->write_work, hci_uart_write_work); |
9f2aee84 | 297 | |
1da177e4 LT |
298 | spin_lock_init(&hu->rx_lock); |
299 | ||
300 | /* Flush any pending characters in the driver and line discipline. */ | |
0372a662 | 301 | |
1da177e4 LT |
302 | /* FIXME: why is this needed. Note don't use ldisc_ref here as the |
303 | open path is before the ldisc is referencable */ | |
0372a662 | 304 | |
c65c9bc3 AC |
305 | if (tty->ldisc->ops->flush_buffer) |
306 | tty->ldisc->ops->flush_buffer(tty); | |
f34d7a5b | 307 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
308 | |
309 | return 0; | |
310 | } | |
311 | ||
312 | /* hci_uart_tty_close() | |
313 | * | |
314 | * Called when the line discipline is changed to something | |
315 | * else, the tty is closed, or the tty detects a hangup. | |
316 | */ | |
317 | static void hci_uart_tty_close(struct tty_struct *tty) | |
318 | { | |
319 | struct hci_uart *hu = (void *)tty->disc_data; | |
dac670b9 | 320 | struct hci_dev *hdev; |
1da177e4 LT |
321 | |
322 | BT_DBG("tty %p", tty); | |
323 | ||
324 | /* Detach from the tty */ | |
325 | tty->disc_data = NULL; | |
326 | ||
dac670b9 JH |
327 | if (!hu) |
328 | return; | |
22ad4203 | 329 | |
dac670b9 JH |
330 | hdev = hu->hdev; |
331 | if (hdev) | |
332 | hci_uart_close(hdev); | |
1da177e4 | 333 | |
da64c27d FB |
334 | cancel_work_sync(&hu->write_work); |
335 | ||
dac670b9 JH |
336 | if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) { |
337 | if (hdev) { | |
9f2aee84 JH |
338 | if (test_bit(HCI_UART_REGISTERED, &hu->flags)) |
339 | hci_unregister_dev(hdev); | |
dac670b9 | 340 | hci_free_dev(hdev); |
1da177e4 | 341 | } |
dac670b9 | 342 | hu->proto->close(hu); |
1da177e4 | 343 | } |
dac670b9 JH |
344 | |
345 | kfree(hu); | |
1da177e4 LT |
346 | } |
347 | ||
348 | /* hci_uart_tty_wakeup() | |
349 | * | |
350 | * Callback for transmit wakeup. Called when low level | |
351 | * device driver can accept more send data. | |
352 | * | |
353 | * Arguments: tty pointer to associated tty instance data | |
354 | * Return Value: None | |
355 | */ | |
356 | static void hci_uart_tty_wakeup(struct tty_struct *tty) | |
357 | { | |
358 | struct hci_uart *hu = (void *)tty->disc_data; | |
359 | ||
360 | BT_DBG(""); | |
361 | ||
362 | if (!hu) | |
363 | return; | |
364 | ||
365 | clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); | |
366 | ||
367 | if (tty != hu->tty) | |
368 | return; | |
369 | ||
370 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
371 | hci_uart_tx_wakeup(hu); | |
372 | } | |
373 | ||
1da177e4 | 374 | /* hci_uart_tty_receive() |
1687dfc3 | 375 | * |
1da177e4 LT |
376 | * Called by tty low level driver when receive data is |
377 | * available. | |
1687dfc3 | 378 | * |
1da177e4 LT |
379 | * Arguments: tty pointer to tty isntance data |
380 | * data pointer to received data | |
381 | * flags pointer to flags for data | |
382 | * count count of received data in bytes | |
1687dfc3 | 383 | * |
55db4c64 | 384 | * Return Value: None |
1da177e4 | 385 | */ |
55db4c64 | 386 | static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *flags, int count) |
1da177e4 LT |
387 | { |
388 | struct hci_uart *hu = (void *)tty->disc_data; | |
0372a662 | 389 | |
1da177e4 | 390 | if (!hu || tty != hu->tty) |
55db4c64 | 391 | return; |
1da177e4 LT |
392 | |
393 | if (!test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
55db4c64 | 394 | return; |
0372a662 | 395 | |
1da177e4 | 396 | spin_lock(&hu->rx_lock); |
55db4c64 | 397 | hu->proto->recv(hu, (void *) data, count); |
788f0923 CP |
398 | |
399 | if (hu->hdev) | |
400 | hu->hdev->stat.byte_rx += count; | |
401 | ||
1da177e4 LT |
402 | spin_unlock(&hu->rx_lock); |
403 | ||
39c2e60f | 404 | tty_unthrottle(tty); |
1da177e4 LT |
405 | } |
406 | ||
407 | static int hci_uart_register_dev(struct hci_uart *hu) | |
408 | { | |
409 | struct hci_dev *hdev; | |
410 | ||
411 | BT_DBG(""); | |
412 | ||
413 | /* Initialize and register HCI device */ | |
414 | hdev = hci_alloc_dev(); | |
415 | if (!hdev) { | |
416 | BT_ERR("Can't allocate HCI device"); | |
417 | return -ENOMEM; | |
418 | } | |
419 | ||
420 | hu->hdev = hdev; | |
421 | ||
c13854ce | 422 | hdev->bus = HCI_UART; |
155961e8 | 423 | hci_set_drvdata(hdev, hu); |
1da177e4 LT |
424 | |
425 | hdev->open = hci_uart_open; | |
426 | hdev->close = hci_uart_close; | |
427 | hdev->flush = hci_uart_flush; | |
428 | hdev->send = hci_uart_send_frame; | |
6935e0f5 | 429 | SET_HCIDEV_DEV(hdev, hu->tty->dev); |
1da177e4 | 430 | |
63c7d09c JH |
431 | if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags)) |
432 | set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); | |
433 | ||
a55e1f38 | 434 | if (!test_bit(HCI_UART_RESET_ON_INIT, &hu->hdev_flags)) |
a6c511c6 | 435 | set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); |
a55e1f38 | 436 | |
8a7a3fd6 MH |
437 | if (test_bit(HCI_UART_CREATE_AMP, &hu->hdev_flags)) |
438 | hdev->dev_type = HCI_AMP; | |
439 | else | |
440 | hdev->dev_type = HCI_BREDR; | |
441 | ||
9f2aee84 JH |
442 | if (test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) |
443 | return 0; | |
444 | ||
1da177e4 LT |
445 | if (hci_register_dev(hdev) < 0) { |
446 | BT_ERR("Can't register HCI device"); | |
447 | hci_free_dev(hdev); | |
448 | return -ENODEV; | |
449 | } | |
450 | ||
9f2aee84 JH |
451 | set_bit(HCI_UART_REGISTERED, &hu->flags); |
452 | ||
1da177e4 LT |
453 | return 0; |
454 | } | |
455 | ||
456 | static int hci_uart_set_proto(struct hci_uart *hu, int id) | |
457 | { | |
458 | struct hci_uart_proto *p; | |
0372a662 MH |
459 | int err; |
460 | ||
1da177e4 LT |
461 | p = hci_uart_get_proto(id); |
462 | if (!p) | |
463 | return -EPROTONOSUPPORT; | |
464 | ||
465 | err = p->open(hu); | |
466 | if (err) | |
467 | return err; | |
468 | ||
469 | hu->proto = p; | |
470 | ||
471 | err = hci_uart_register_dev(hu); | |
472 | if (err) { | |
473 | p->close(hu); | |
474 | return err; | |
475 | } | |
0372a662 | 476 | |
1da177e4 LT |
477 | return 0; |
478 | } | |
479 | ||
480 | /* hci_uart_tty_ioctl() | |
481 | * | |
482 | * Process IOCTL system call for the tty device. | |
483 | * | |
484 | * Arguments: | |
485 | * | |
486 | * tty pointer to tty instance data | |
487 | * file pointer to open file object for device | |
488 | * cmd IOCTL command code | |
489 | * arg argument for IOCTL call (cmd dependent) | |
490 | * | |
491 | * Return Value: Command dependent | |
492 | */ | |
493 | static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, | |
0372a662 | 494 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
495 | { |
496 | struct hci_uart *hu = (void *)tty->disc_data; | |
497 | int err = 0; | |
498 | ||
499 | BT_DBG(""); | |
500 | ||
501 | /* Verify the status of the device */ | |
502 | if (!hu) | |
503 | return -EBADF; | |
504 | ||
505 | switch (cmd) { | |
506 | case HCIUARTSETPROTO: | |
507 | if (!test_and_set_bit(HCI_UART_PROTO_SET, &hu->flags)) { | |
508 | err = hci_uart_set_proto(hu, arg); | |
509 | if (err) { | |
510 | clear_bit(HCI_UART_PROTO_SET, &hu->flags); | |
511 | return err; | |
512 | } | |
0372a662 | 513 | } else |
1da177e4 | 514 | return -EBUSY; |
c33be3c3 | 515 | break; |
1da177e4 LT |
516 | |
517 | case HCIUARTGETPROTO: | |
518 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
519 | return hu->proto->id; | |
520 | return -EUNATCH; | |
0372a662 | 521 | |
d2158744 MH |
522 | case HCIUARTGETDEVICE: |
523 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
524 | return hu->hdev->id; | |
525 | return -EUNATCH; | |
526 | ||
63c7d09c JH |
527 | case HCIUARTSETFLAGS: |
528 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
529 | return -EBUSY; | |
530 | hu->hdev_flags = arg; | |
531 | break; | |
532 | ||
533 | case HCIUARTGETFLAGS: | |
534 | return hu->hdev_flags; | |
535 | ||
1da177e4 | 536 | default: |
47afa7a5 | 537 | err = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 | 538 | break; |
a20890d0 | 539 | } |
1da177e4 LT |
540 | |
541 | return err; | |
542 | } | |
543 | ||
544 | /* | |
545 | * We don't provide read/write/poll interface for user space. | |
546 | */ | |
0372a662 MH |
547 | static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, |
548 | unsigned char __user *buf, size_t nr) | |
1da177e4 LT |
549 | { |
550 | return 0; | |
551 | } | |
0372a662 MH |
552 | |
553 | static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, | |
554 | const unsigned char *data, size_t count) | |
1da177e4 LT |
555 | { |
556 | return 0; | |
557 | } | |
0372a662 MH |
558 | |
559 | static unsigned int hci_uart_tty_poll(struct tty_struct *tty, | |
560 | struct file *filp, poll_table *wait) | |
1da177e4 LT |
561 | { |
562 | return 0; | |
563 | } | |
564 | ||
1da177e4 LT |
565 | static int __init hci_uart_init(void) |
566 | { | |
a352def2 | 567 | static struct tty_ldisc_ops hci_uart_ldisc; |
1da177e4 LT |
568 | int err; |
569 | ||
570 | BT_INFO("HCI UART driver ver %s", VERSION); | |
571 | ||
572 | /* Register the tty discipline */ | |
573 | ||
574 | memset(&hci_uart_ldisc, 0, sizeof (hci_uart_ldisc)); | |
0372a662 MH |
575 | hci_uart_ldisc.magic = TTY_LDISC_MAGIC; |
576 | hci_uart_ldisc.name = "n_hci"; | |
577 | hci_uart_ldisc.open = hci_uart_tty_open; | |
578 | hci_uart_ldisc.close = hci_uart_tty_close; | |
579 | hci_uart_ldisc.read = hci_uart_tty_read; | |
580 | hci_uart_ldisc.write = hci_uart_tty_write; | |
581 | hci_uart_ldisc.ioctl = hci_uart_tty_ioctl; | |
582 | hci_uart_ldisc.poll = hci_uart_tty_poll; | |
0372a662 MH |
583 | hci_uart_ldisc.receive_buf = hci_uart_tty_receive; |
584 | hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup; | |
585 | hci_uart_ldisc.owner = THIS_MODULE; | |
1da177e4 | 586 | |
a08b15e6 VI |
587 | err = tty_register_ldisc(N_HCI, &hci_uart_ldisc); |
588 | if (err) { | |
1da177e4 LT |
589 | BT_ERR("HCI line discipline registration failed. (%d)", err); |
590 | return err; | |
591 | } | |
592 | ||
593 | #ifdef CONFIG_BT_HCIUART_H4 | |
594 | h4_init(); | |
595 | #endif | |
596 | #ifdef CONFIG_BT_HCIUART_BCSP | |
597 | bcsp_init(); | |
598 | #endif | |
166d2f6a OBC |
599 | #ifdef CONFIG_BT_HCIUART_LL |
600 | ll_init(); | |
601 | #endif | |
b3190df6 SS |
602 | #ifdef CONFIG_BT_HCIUART_ATH3K |
603 | ath_init(); | |
604 | #endif | |
7dec65c8 JH |
605 | #ifdef CONFIG_BT_HCIUART_3WIRE |
606 | h5_init(); | |
607 | #endif | |
166d2f6a | 608 | |
1da177e4 LT |
609 | return 0; |
610 | } | |
611 | ||
612 | static void __exit hci_uart_exit(void) | |
613 | { | |
614 | int err; | |
615 | ||
616 | #ifdef CONFIG_BT_HCIUART_H4 | |
617 | h4_deinit(); | |
618 | #endif | |
619 | #ifdef CONFIG_BT_HCIUART_BCSP | |
620 | bcsp_deinit(); | |
621 | #endif | |
166d2f6a OBC |
622 | #ifdef CONFIG_BT_HCIUART_LL |
623 | ll_deinit(); | |
624 | #endif | |
b3190df6 SS |
625 | #ifdef CONFIG_BT_HCIUART_ATH3K |
626 | ath_deinit(); | |
627 | #endif | |
7dec65c8 JH |
628 | #ifdef CONFIG_BT_HCIUART_3WIRE |
629 | h5_deinit(); | |
630 | #endif | |
1da177e4 LT |
631 | |
632 | /* Release tty registration of line discipline */ | |
a08b15e6 VI |
633 | err = tty_unregister_ldisc(N_HCI); |
634 | if (err) | |
1da177e4 LT |
635 | BT_ERR("Can't unregister HCI line discipline (%d)", err); |
636 | } | |
637 | ||
638 | module_init(hci_uart_init); | |
639 | module_exit(hci_uart_exit); | |
640 | ||
63fbd24e | 641 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
642 | MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION); |
643 | MODULE_VERSION(VERSION); | |
644 | MODULE_LICENSE("GPL"); | |
645 | MODULE_ALIAS_LDISC(N_HCI); |