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virtio: endianness checks for virtio 1.0 devices
[qemu.git] / hw / bt / hci.c
blob7ea3dc6b70055a2a5ee2a9ed325562b47ee01109
1 /*
2 * QEMU Bluetooth HCI logic.
3 *
4 * Copyright (C) 2007 OpenMoko, Inc.
5 * Copyright (C) 2008 Andrzej Zaborowski <balrog@zabor.org>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "qemu-common.h"
22 #include "qemu/timer.h"
23 #include "hw/usb.h"
24 #include "sysemu/bt.h"
25 #include "hw/bt.h"
26
27 struct bt_hci_s {
28 uint8_t *(*evt_packet)(void *opaque);
29 void (*evt_submit)(void *opaque, int len);
30 void *opaque;
31 uint8_t evt_buf[256];
32
33 uint8_t acl_buf[4096];
34 int acl_len;
35
36 uint16_t asb_handle;
37 uint16_t psb_handle;
38
39 int last_cmd; /* Note: Always little-endian */
40
41 struct bt_device_s *conn_req_host;
42
43 struct {
44 int inquire;
45 int periodic;
46 int responses_left;
47 int responses;
48 QEMUTimer *inquiry_done;
49 QEMUTimer *inquiry_next;
50 int inquiry_length;
51 int inquiry_period;
52 int inquiry_mode;
53
54 #define HCI_HANDLE_OFFSET 0x20
55 #define HCI_HANDLES_MAX 0x10
56 struct bt_hci_master_link_s {
57 struct bt_link_s *link;
58 void (*lmp_acl_data)(struct bt_link_s *link,
59 const uint8_t *data, int start, int len);
60 QEMUTimer *acl_mode_timer;
61 } handle[HCI_HANDLES_MAX];
62 uint32_t role_bmp;
63 int last_handle;
64 int connecting;
65 bdaddr_t awaiting_bdaddr[HCI_HANDLES_MAX];
66 } lm;
67
68 uint8_t event_mask[8];
69 uint16_t voice_setting; /* Notw: Always little-endian */
70 uint16_t conn_accept_tout;
71 QEMUTimer *conn_accept_timer;
72
73 struct HCIInfo info;
74 struct bt_device_s device;
75 };
76
77 #define DEFAULT_RSSI_DBM 20
78
79 #define hci_from_info(ptr) container_of((ptr), struct bt_hci_s, info)
80 #define hci_from_device(ptr) container_of((ptr), struct bt_hci_s, device)
81
82 struct bt_hci_link_s {
83 struct bt_link_s btlink;
84 uint16_t handle; /* Local */
85 };
86
87 /* LMP layer emulation */
88 #if 0
89 static void bt_submit_lmp(struct bt_device_s *bt, int length, uint8_t *data)
90 {
91 int resp, resplen, error, op, tr;
92 uint8_t respdata[17];
93
94 if (length < 1)
95 return;
96
97 tr = *data & 1;
98 op = *(data ++) >> 1;
99 resp = LMP_ACCEPTED;
100 resplen = 2;
101 respdata[1] = op;
102 error = 0;
103 length --;
104
105 if (op >= 0x7c) { /* Extended opcode */
106 op |= *(data ++) << 8;
107 resp = LMP_ACCEPTED_EXT;
108 resplen = 4;
109 respdata[0] = op >> 8;
110 respdata[1] = op & 0xff;
111 length --;
112 }
113
114 switch (op) {
115 case LMP_ACCEPTED:
116 /* data[0] Op code
117 */
118 if (length < 1) {
119 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
120 goto not_accepted;
121 }
122 resp = 0;
123 break;
124
125 case LMP_ACCEPTED_EXT:
126 /* data[0] Escape op code
127 * data[1] Extended op code
128 */
129 if (length < 2) {
130 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
131 goto not_accepted;
132 }
133 resp = 0;
134 break;
135
136 case LMP_NOT_ACCEPTED:
137 /* data[0] Op code
138 * data[1] Error code
139 */
140 if (length < 2) {
141 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
142 goto not_accepted;
143 }
144 resp = 0;
145 break;
146
147 case LMP_NOT_ACCEPTED_EXT:
148 /* data[0] Op code
149 * data[1] Extended op code
150 * data[2] Error code
151 */
152 if (length < 3) {
153 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
154 goto not_accepted;
155 }
156 resp = 0;
157 break;
158
159 case LMP_HOST_CONNECTION_REQ:
160 break;
161
162 case LMP_SETUP_COMPLETE:
163 resp = LMP_SETUP_COMPLETE;
164 resplen = 1;
165 bt->setup = 1;
166 break;
167
168 case LMP_DETACH:
169 /* data[0] Error code
170 */
171 if (length < 1) {
172 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
173 goto not_accepted;
174 }
175 bt->setup = 0;
176 resp = 0;
177 break;
178
179 case LMP_SUPERVISION_TIMEOUT:
180 /* data[0,1] Supervision timeout
181 */
182 if (length < 2) {
183 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
184 goto not_accepted;
185 }
186 resp = 0;
187 break;
188
189 case LMP_QUALITY_OF_SERVICE:
190 resp = 0;
191 /* Fall through */
192 case LMP_QOS_REQ:
193 /* data[0,1] Poll interval
194 * data[2] N(BC)
195 */
196 if (length < 3) {
197 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
198 goto not_accepted;
199 }
200 break;
201
202 case LMP_MAX_SLOT:
203 resp = 0;
204 /* Fall through */
205 case LMP_MAX_SLOT_REQ:
206 /* data[0] Max slots
207 */
208 if (length < 1) {
209 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
210 goto not_accepted;
211 }
212 break;
213
214 case LMP_AU_RAND:
215 case LMP_IN_RAND:
216 case LMP_COMB_KEY:
217 /* data[0-15] Random number
218 */
219 if (length < 16) {
220 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
221 goto not_accepted;
222 }
223 if (op == LMP_AU_RAND) {
224 if (bt->key_present) {
225 resp = LMP_SRES;
226 resplen = 5;
227 /* XXX: [Part H] Section 6.1 on page 801 */
228 } else {
229 error = HCI_PIN_OR_KEY_MISSING;
230 goto not_accepted;
231 }
232 } else if (op == LMP_IN_RAND) {
233 error = HCI_PAIRING_NOT_ALLOWED;
234 goto not_accepted;
235 } else {
236 /* XXX: [Part H] Section 3.2 on page 779 */
237 resp = LMP_UNIT_KEY;
238 resplen = 17;
239 memcpy(respdata + 1, bt->key, 16);
240
241 error = HCI_UNIT_LINK_KEY_USED;
242 goto not_accepted;
243 }
244 break;
245
246 case LMP_UNIT_KEY:
247 /* data[0-15] Key
248 */
249 if (length < 16) {
250 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
251 goto not_accepted;
252 }
253 memcpy(bt->key, data, 16);
254 bt->key_present = 1;
255 break;
256
257 case LMP_SRES:
258 /* data[0-3] Authentication response
259 */
260 if (length < 4) {
261 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
262 goto not_accepted;
263 }
264 break;
265
266 case LMP_CLKOFFSET_REQ:
267 resp = LMP_CLKOFFSET_RES;
268 resplen = 3;
269 respdata[1] = 0x33;
270 respdata[2] = 0x33;
271 break;
272
273 case LMP_CLKOFFSET_RES:
274 /* data[0,1] Clock offset
275 * (Slave to master only)
276 */
277 if (length < 2) {
278 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
279 goto not_accepted;
280 }
281 break;
282
283 case LMP_VERSION_REQ:
284 case LMP_VERSION_RES:
285 /* data[0] VersNr
286 * data[1,2] CompId
287 * data[3,4] SubVersNr
288 */
289 if (length < 5) {
290 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
291 goto not_accepted;
292 }
293 if (op == LMP_VERSION_REQ) {
294 resp = LMP_VERSION_RES;
295 resplen = 6;
296 respdata[1] = 0x20;
297 respdata[2] = 0xff;
298 respdata[3] = 0xff;
299 respdata[4] = 0xff;
300 respdata[5] = 0xff;
301 } else
302 resp = 0;
303 break;
304
305 case LMP_FEATURES_REQ:
306 case LMP_FEATURES_RES:
307 /* data[0-7] Features
308 */
309 if (length < 8) {
310 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
311 goto not_accepted;
312 }
313 if (op == LMP_FEATURES_REQ) {
314 resp = LMP_FEATURES_RES;
315 resplen = 9;
316 respdata[1] = (bt->lmp_caps >> 0) & 0xff;
317 respdata[2] = (bt->lmp_caps >> 8) & 0xff;
318 respdata[3] = (bt->lmp_caps >> 16) & 0xff;
319 respdata[4] = (bt->lmp_caps >> 24) & 0xff;
320 respdata[5] = (bt->lmp_caps >> 32) & 0xff;
321 respdata[6] = (bt->lmp_caps >> 40) & 0xff;
322 respdata[7] = (bt->lmp_caps >> 48) & 0xff;
323 respdata[8] = (bt->lmp_caps >> 56) & 0xff;
324 } else
325 resp = 0;
326 break;
327
328 case LMP_NAME_REQ:
329 /* data[0] Name offset
330 */
331 if (length < 1) {
332 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
333 goto not_accepted;
334 }
335 resp = LMP_NAME_RES;
336 resplen = 17;
337 respdata[1] = data[0];
338 respdata[2] = strlen(bt->lmp_name);
339 memset(respdata + 3, 0x00, 14);
340 if (respdata[2] > respdata[1])
341 memcpy(respdata + 3, bt->lmp_name + respdata[1],
342 respdata[2] - respdata[1]);
343 break;
344
345 case LMP_NAME_RES:
346 /* data[0] Name offset
347 * data[1] Name length
348 * data[2-15] Name fragment
349 */
350 if (length < 16) {
351 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
352 goto not_accepted;
353 }
354 resp = 0;
355 break;
356
357 default:
358 error = HCI_UNKNOWN_LMP_PDU;
359 /* Fall through */
360 not_accepted:
361 if (op >> 8) {
362 resp = LMP_NOT_ACCEPTED_EXT;
363 resplen = 5;
364 respdata[0] = op >> 8;
365 respdata[1] = op & 0xff;
366 respdata[2] = error;
367 } else {
368 resp = LMP_NOT_ACCEPTED;
369 resplen = 3;
370 respdata[0] = op & 0xff;
371 respdata[1] = error;
372 }
373 }
374
375 if (resp == 0)
376 return;
377
378 if (resp >> 8) {
379 respdata[0] = resp >> 8;
380 respdata[1] = resp & 0xff;
381 } else
382 respdata[0] = resp & 0xff;
383
384 respdata[0] <<= 1;
385 respdata[0] |= tr;
386 }
387
388 static void bt_submit_raw_acl(struct bt_piconet_s *net, int length, uint8_t *data)
389 {
390 struct bt_device_s *slave;
391 if (length < 1)
392 return;
393
394 slave = 0;
395 #if 0
396 slave = net->slave;
397 #endif
398
399 switch (data[0] & 3) {
400 case LLID_ACLC:
401 bt_submit_lmp(slave, length - 1, data + 1);
402 break;
403 case LLID_ACLU_START:
404 #if 0
405 bt_sumbit_l2cap(slave, length - 1, data + 1, (data[0] >> 2) & 1);
406 breka;
407 #endif
408 default:
409 case LLID_ACLU_CONT:
410 break;
411 }
412 }
413 #endif
414
415 /* HCI layer emulation */
416
417 /* Note: we could ignore endiannes because unswapped handles will still
418 * be valid as connection identifiers for the guest - they don't have to
419 * be continuously allocated. We do it though, to preserve similar
420 * behaviour between hosts. Some things, like the BD_ADDR cannot be
421 * preserved though (for example if a real hci is used). */
422 #ifdef HOST_WORDS_BIGENDIAN
423 # define HNDL(raw) bswap16(raw)
424 #else
425 # define HNDL(raw) (raw)
426 #endif
427
428 static const uint8_t bt_event_reserved_mask[8] = {
429 0xff, 0x9f, 0xfb, 0xff, 0x07, 0x18, 0x00, 0x00,
430 };
431
432
433 static void null_hci_send(struct HCIInfo *hci, const uint8_t *data, int len)
434 {
435 }
436
437 static int null_hci_addr_set(struct HCIInfo *hci, const uint8_t *bd_addr)
438 {
439 return -ENOTSUP;
440 }
441
442 struct HCIInfo null_hci = {
443 .cmd_send = null_hci_send,
444 .sco_send = null_hci_send,
445 .acl_send = null_hci_send,
446 .bdaddr_set = null_hci_addr_set,
447 };
448
449
450 static inline uint8_t *bt_hci_event_start(struct bt_hci_s *hci,
451 int evt, int len)
452 {
453 uint8_t *packet, mask;
454 int mask_byte;
455
456 if (len > 255) {
457 fprintf(stderr, "%s: HCI event params too long (%ib)\n",
458 __FUNCTION__, len);
459 exit(-1);
460 }
461
462 mask_byte = (evt - 1) >> 3;
463 mask = 1 << ((evt - 1) & 3);
464 if (mask & bt_event_reserved_mask[mask_byte] & ~hci->event_mask[mask_byte])
465 return NULL;
466
467 packet = hci->evt_packet(hci->opaque);
468 packet[0] = evt;
469 packet[1] = len;
470
471 return &packet[2];
472 }
473
474 static inline void bt_hci_event(struct bt_hci_s *hci, int evt,
475 void *params, int len)
476 {
477 uint8_t *packet = bt_hci_event_start(hci, evt, len);
478
479 if (!packet)
480 return;
481
482 if (len)
483 memcpy(packet, params, len);
484
485 hci->evt_submit(hci->opaque, len + 2);
486 }
487
488 static inline void bt_hci_event_status(struct bt_hci_s *hci, int status)
489 {
490 evt_cmd_status params = {
491 .status = status,
492 .ncmd = 1,
493 .opcode = hci->last_cmd,
494 };
495
496 bt_hci_event(hci, EVT_CMD_STATUS, &params, EVT_CMD_STATUS_SIZE);
497 }
498
499 static inline void bt_hci_event_complete(struct bt_hci_s *hci,
500 void *ret, int len)
501 {
502 uint8_t *packet = bt_hci_event_start(hci, EVT_CMD_COMPLETE,
503 len + EVT_CMD_COMPLETE_SIZE);
504 evt_cmd_complete *params = (evt_cmd_complete *) packet;
505
506 if (!packet)
507 return;
508
509 params->ncmd = 1;
510 params->opcode = hci->last_cmd;
511 if (len)
512 memcpy(&packet[EVT_CMD_COMPLETE_SIZE], ret, len);
513
514 hci->evt_submit(hci->opaque, len + EVT_CMD_COMPLETE_SIZE + 2);
515 }
516
517 static void bt_hci_inquiry_done(void *opaque)
518 {
519 struct bt_hci_s *hci = (struct bt_hci_s *) opaque;
520 uint8_t status = HCI_SUCCESS;
521
522 if (!hci->lm.periodic)
523 hci->lm.inquire = 0;
524
525 /* The specification is inconsistent about this one. Page 565 reads
526 * "The event parameters of Inquiry Complete event will have a summary
527 * of the result from the Inquiry process, which reports the number of
528 * nearby Bluetooth devices that responded [so hci->responses].", but
529 * Event Parameters (see page 729) has only Status. */
530 bt_hci_event(hci, EVT_INQUIRY_COMPLETE, &status, 1);
531 }
532
533 static void bt_hci_inquiry_result_standard(struct bt_hci_s *hci,
534 struct bt_device_s *slave)
535 {
536 inquiry_info params = {
537 .num_responses = 1,
538 .bdaddr = BAINIT(&slave->bd_addr),
539 .pscan_rep_mode = 0x00, /* R0 */
540 .pscan_period_mode = 0x00, /* P0 - deprecated */
541 .pscan_mode = 0x00, /* Standard scan - deprecated */
542 .dev_class[0] = slave->class[0],
543 .dev_class[1] = slave->class[1],
544 .dev_class[2] = slave->class[2],
545 /* TODO: return the clkoff *differenece* */
546 .clock_offset = slave->clkoff, /* Note: no swapping */
547 };
548
549 bt_hci_event(hci, EVT_INQUIRY_RESULT, &params, INQUIRY_INFO_SIZE);
550 }
551
552 static void bt_hci_inquiry_result_with_rssi(struct bt_hci_s *hci,
553 struct bt_device_s *slave)
554 {
555 inquiry_info_with_rssi params = {
556 .num_responses = 1,
557 .bdaddr = BAINIT(&slave->bd_addr),
558 .pscan_rep_mode = 0x00, /* R0 */
559 .pscan_period_mode = 0x00, /* P0 - deprecated */
560 .dev_class[0] = slave->class[0],
561 .dev_class[1] = slave->class[1],
562 .dev_class[2] = slave->class[2],
563 /* TODO: return the clkoff *differenece* */
564 .clock_offset = slave->clkoff, /* Note: no swapping */
565 .rssi = DEFAULT_RSSI_DBM,
566 };
567
568 bt_hci_event(hci, EVT_INQUIRY_RESULT_WITH_RSSI,
569 &params, INQUIRY_INFO_WITH_RSSI_SIZE);
570 }
571
572 static void bt_hci_inquiry_result(struct bt_hci_s *hci,
573 struct bt_device_s *slave)
574 {
575 if (!slave->inquiry_scan || !hci->lm.responses_left)
576 return;
577
578 hci->lm.responses_left --;
579 hci->lm.responses ++;
580
581 switch (hci->lm.inquiry_mode) {
582 case 0x00:
583 bt_hci_inquiry_result_standard(hci, slave);
584 return;
585 case 0x01:
586 bt_hci_inquiry_result_with_rssi(hci, slave);
587 return;
588 default:
589 fprintf(stderr, "%s: bad inquiry mode %02x\n", __FUNCTION__,
590 hci->lm.inquiry_mode);
591 exit(-1);
592 }
593 }
594
595 static void bt_hci_mod_timer_1280ms(QEMUTimer *timer, int period)
596 {
597 timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
598 muldiv64(period << 7, get_ticks_per_sec(), 100));
599 }
600
601 static void bt_hci_inquiry_start(struct bt_hci_s *hci, int length)
602 {
603 struct bt_device_s *slave;
604
605 hci->lm.inquiry_length = length;
606 for (slave = hci->device.net->slave; slave; slave = slave->next)
607 /* Don't uncover ourselves. */
608 if (slave != &hci->device)
609 bt_hci_inquiry_result(hci, slave);
610
611 /* TODO: register for a callback on a new device's addition to the
612 * scatternet so that if it's added before inquiry_length expires,
613 * an Inquiry Result is generated immediately. Alternatively re-loop
614 * through the devices on the inquiry_length expiration and report
615 * devices not seen before. */
616 if (hci->lm.responses_left)
617 bt_hci_mod_timer_1280ms(hci->lm.inquiry_done, hci->lm.inquiry_length);
618 else
619 bt_hci_inquiry_done(hci);
620
621 if (hci->lm.periodic)
622 bt_hci_mod_timer_1280ms(hci->lm.inquiry_next, hci->lm.inquiry_period);
623 }
624
625 static void bt_hci_inquiry_next(void *opaque)
626 {
627 struct bt_hci_s *hci = (struct bt_hci_s *) opaque;
628
629 hci->lm.responses_left += hci->lm.responses;
630 hci->lm.responses = 0;
631 bt_hci_inquiry_start(hci, hci->lm.inquiry_length);
632 }
633
634 static inline int bt_hci_handle_bad(struct bt_hci_s *hci, uint16_t handle)
635 {
636 return !(handle & HCI_HANDLE_OFFSET) ||
637 handle >= (HCI_HANDLE_OFFSET | HCI_HANDLES_MAX) ||
638 !hci->lm.handle[handle & ~HCI_HANDLE_OFFSET].link;
639 }
640
641 static inline int bt_hci_role_master(struct bt_hci_s *hci, uint16_t handle)
642 {
643 return !!(hci->lm.role_bmp & (1 << (handle & ~HCI_HANDLE_OFFSET)));
644 }
645
646 static inline struct bt_device_s *bt_hci_remote_dev(struct bt_hci_s *hci,
647 uint16_t handle)
648 {
649 struct bt_link_s *link = hci->lm.handle[handle & ~HCI_HANDLE_OFFSET].link;
650
651 return bt_hci_role_master(hci, handle) ? link->slave : link->host;
652 }
653
654 static void bt_hci_mode_tick(void *opaque);
655 static void bt_hci_lmp_link_establish(struct bt_hci_s *hci,
656 struct bt_link_s *link, int master)
657 {
658 hci->lm.handle[hci->lm.last_handle].link = link;
659
660 if (master) {
661 /* We are the master side of an ACL link */
662 hci->lm.role_bmp |= 1 << hci->lm.last_handle;
663
664 hci->lm.handle[hci->lm.last_handle].lmp_acl_data =
665 link->slave->lmp_acl_data;
666 } else {
667 /* We are the slave side of an ACL link */
668 hci->lm.role_bmp &= ~(1 << hci->lm.last_handle);
669
670 hci->lm.handle[hci->lm.last_handle].lmp_acl_data =
671 link->host->lmp_acl_resp;
672 }
673
674 /* Mode */
675 if (master) {
676 link->acl_mode = acl_active;
677 hci->lm.handle[hci->lm.last_handle].acl_mode_timer =
678 timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_mode_tick, link);
679 }
680 }
681
682 static void bt_hci_lmp_link_teardown(struct bt_hci_s *hci, uint16_t handle)
683 {
684 handle &= ~HCI_HANDLE_OFFSET;
685 hci->lm.handle[handle].link = NULL;
686
687 if (bt_hci_role_master(hci, handle)) {
688 timer_del(hci->lm.handle[handle].acl_mode_timer);
689 timer_free(hci->lm.handle[handle].acl_mode_timer);
690 }
691 }
692
693 static int bt_hci_connect(struct bt_hci_s *hci, bdaddr_t *bdaddr)
694 {
695 struct bt_device_s *slave;
696 struct bt_link_s link;
697
698 for (slave = hci->device.net->slave; slave; slave = slave->next)
699 if (slave->page_scan && !bacmp(&slave->bd_addr, bdaddr))
700 break;
701 if (!slave || slave == &hci->device)
702 return -ENODEV;
703
704 bacpy(&hci->lm.awaiting_bdaddr[hci->lm.connecting ++], &slave->bd_addr);
705
706 link.slave = slave;
707 link.host = &hci->device;
708 link.slave->lmp_connection_request(&link); /* Always last */
709
710 return 0;
711 }
712
713 static void bt_hci_connection_reject(struct bt_hci_s *hci,
714 struct bt_device_s *host, uint8_t because)
715 {
716 struct bt_link_s link = {
717 .slave = &hci->device,
718 .host = host,
719 /* Rest uninitialised */
720 };
721
722 host->reject_reason = because;
723 host->lmp_connection_complete(&link);
724 }
725
726 static void bt_hci_connection_reject_event(struct bt_hci_s *hci,
727 bdaddr_t *bdaddr)
728 {
729 evt_conn_complete params;
730
731 params.status = HCI_NO_CONNECTION;
732 params.handle = 0;
733 bacpy(&params.bdaddr, bdaddr);
734 params.link_type = ACL_LINK;
735 params.encr_mode = 0x00; /* Encryption not required */
736 bt_hci_event(hci, EVT_CONN_COMPLETE, &params, EVT_CONN_COMPLETE_SIZE);
737 }
738
739 static void bt_hci_connection_accept(struct bt_hci_s *hci,
740 struct bt_device_s *host)
741 {
742 struct bt_hci_link_s *link = g_malloc0(sizeof(struct bt_hci_link_s));
743 evt_conn_complete params;
744 uint16_t handle;
745 uint8_t status = HCI_SUCCESS;
746 int tries = HCI_HANDLES_MAX;
747
748 /* Make a connection handle */
749 do {
750 while (hci->lm.handle[++ hci->lm.last_handle].link && -- tries)
751 hci->lm.last_handle &= HCI_HANDLES_MAX - 1;
752 handle = hci->lm.last_handle | HCI_HANDLE_OFFSET;
753 } while ((handle == hci->asb_handle || handle == hci->psb_handle) &&
754 tries);
755
756 if (!tries) {
757 g_free(link);
758 bt_hci_connection_reject(hci, host, HCI_REJECTED_LIMITED_RESOURCES);
759 status = HCI_NO_CONNECTION;
760 goto complete;
761 }
762
763 link->btlink.slave = &hci->device;
764 link->btlink.host = host;
765 link->handle = handle;
766
767 /* Link established */
768 bt_hci_lmp_link_establish(hci, &link->btlink, 0);
769
770 complete:
771 params.status = status;
772 params.handle = HNDL(handle);
773 bacpy(&params.bdaddr, &host->bd_addr);
774 params.link_type = ACL_LINK;
775 params.encr_mode = 0x00; /* Encryption not required */
776 bt_hci_event(hci, EVT_CONN_COMPLETE, &params, EVT_CONN_COMPLETE_SIZE);
777
778 /* Neets to be done at the very end because it can trigger a (nested)
779 * disconnected, in case the other and had cancelled the request
780 * locally. */
781 if (status == HCI_SUCCESS) {
782 host->reject_reason = 0;
783 host->lmp_connection_complete(&link->btlink);
784 }
785 }
786
787 static void bt_hci_lmp_connection_request(struct bt_link_s *link)
788 {
789 struct bt_hci_s *hci = hci_from_device(link->slave);
790 evt_conn_request params;
791
792 if (hci->conn_req_host) {
793 bt_hci_connection_reject(hci, link->host,
794 HCI_REJECTED_LIMITED_RESOURCES);
795 return;
796 }
797 hci->conn_req_host = link->host;
798 /* TODO: if masked and auto-accept, then auto-accept,
799 * if masked and not auto-accept, then auto-reject */
800 /* TODO: kick the hci->conn_accept_timer, timeout after
801 * hci->conn_accept_tout * 0.625 msec */
802
803 bacpy(&params.bdaddr, &link->host->bd_addr);
804 memcpy(&params.dev_class, &link->host->class, sizeof(params.dev_class));
805 params.link_type = ACL_LINK;
806 bt_hci_event(hci, EVT_CONN_REQUEST, &params, EVT_CONN_REQUEST_SIZE);
807 }
808
809 static void bt_hci_conn_accept_timeout(void *opaque)
810 {
811 struct bt_hci_s *hci = (struct bt_hci_s *) opaque;
812
813 if (!hci->conn_req_host)
814 /* Already accepted or rejected. If the other end cancelled the
815 * connection request then we still have to reject or accept it
816 * and then we'll get a disconnect. */
817 return;
818
819 /* TODO */
820 }
821
822 /* Remove from the list of devices which we wanted to connect to and
823 * are awaiting a response from. If the callback sees a response from
824 * a device which is not on the list it will assume it's a connection
825 * that's been cancelled by the host in the meantime and immediately
826 * try to detach the link and send a Connection Complete. */
827 static int bt_hci_lmp_connection_ready(struct bt_hci_s *hci,
828 bdaddr_t *bdaddr)
829 {
830 int i;
831
832 for (i = 0; i < hci->lm.connecting; i ++)
833 if (!bacmp(&hci->lm.awaiting_bdaddr[i], bdaddr)) {
834 if (i < -- hci->lm.connecting)
835 bacpy(&hci->lm.awaiting_bdaddr[i],
836 &hci->lm.awaiting_bdaddr[hci->lm.connecting]);
837 return 0;
838 }
839
840 return 1;
841 }
842
843 static void bt_hci_lmp_connection_complete(struct bt_link_s *link)
844 {
845 struct bt_hci_s *hci = hci_from_device(link->host);
846 evt_conn_complete params;
847 uint16_t handle;
848 uint8_t status = HCI_SUCCESS;
849 int tries = HCI_HANDLES_MAX;
850
851 if (bt_hci_lmp_connection_ready(hci, &link->slave->bd_addr)) {
852 if (!hci->device.reject_reason)
853 link->slave->lmp_disconnect_slave(link);
854 handle = 0;
855 status = HCI_NO_CONNECTION;
856 goto complete;
857 }
858
859 if (hci->device.reject_reason) {
860 handle = 0;
861 status = hci->device.reject_reason;
862 goto complete;
863 }
864
865 /* Make a connection handle */
866 do {
867 while (hci->lm.handle[++ hci->lm.last_handle].link && -- tries)
868 hci->lm.last_handle &= HCI_HANDLES_MAX - 1;
869 handle = hci->lm.last_handle | HCI_HANDLE_OFFSET;
870 } while ((handle == hci->asb_handle || handle == hci->psb_handle) &&
871 tries);
872
873 if (!tries) {
874 link->slave->lmp_disconnect_slave(link);
875 status = HCI_NO_CONNECTION;
876 goto complete;
877 }
878
879 /* Link established */
880 link->handle = handle;
881 bt_hci_lmp_link_establish(hci, link, 1);
882
883 complete:
884 params.status = status;
885 params.handle = HNDL(handle);
886 params.link_type = ACL_LINK;
887 bacpy(&params.bdaddr, &link->slave->bd_addr);
888 params.encr_mode = 0x00; /* Encryption not required */
889 bt_hci_event(hci, EVT_CONN_COMPLETE, &params, EVT_CONN_COMPLETE_SIZE);
890 }
891
892 static void bt_hci_disconnect(struct bt_hci_s *hci,
893 uint16_t handle, int reason)
894 {
895 struct bt_link_s *btlink =
896 hci->lm.handle[handle & ~HCI_HANDLE_OFFSET].link;
897 struct bt_hci_link_s *link;
898 evt_disconn_complete params;
899
900 if (bt_hci_role_master(hci, handle)) {
901 btlink->slave->reject_reason = reason;
902 btlink->slave->lmp_disconnect_slave(btlink);
903 /* The link pointer is invalid from now on */
904
905 goto complete;
906 }
907
908 btlink->host->reject_reason = reason;
909 btlink->host->lmp_disconnect_master(btlink);
910
911 /* We are the slave, we get to clean this burden */
912 link = (struct bt_hci_link_s *) btlink;
913 g_free(link);
914
915 complete:
916 bt_hci_lmp_link_teardown(hci, handle);
917
918 params.status = HCI_SUCCESS;
919 params.handle = HNDL(handle);
920 params.reason = HCI_CONNECTION_TERMINATED;
921 bt_hci_event(hci, EVT_DISCONN_COMPLETE,
922 &params, EVT_DISCONN_COMPLETE_SIZE);
923 }
924
925 /* TODO: use only one function */
926 static void bt_hci_lmp_disconnect_host(struct bt_link_s *link)
927 {
928 struct bt_hci_s *hci = hci_from_device(link->host);
929 uint16_t handle = link->handle;
930 evt_disconn_complete params;
931
932 bt_hci_lmp_link_teardown(hci, handle);
933
934 params.status = HCI_SUCCESS;
935 params.handle = HNDL(handle);
936 params.reason = hci->device.reject_reason;
937 bt_hci_event(hci, EVT_DISCONN_COMPLETE,
938 &params, EVT_DISCONN_COMPLETE_SIZE);
939 }
940
941 static void bt_hci_lmp_disconnect_slave(struct bt_link_s *btlink)
942 {
943 struct bt_hci_link_s *link = (struct bt_hci_link_s *) btlink;
944 struct bt_hci_s *hci = hci_from_device(btlink->slave);
945 uint16_t handle = link->handle;
946 evt_disconn_complete params;
947
948 g_free(link);
949
950 bt_hci_lmp_link_teardown(hci, handle);
951
952 params.status = HCI_SUCCESS;
953 params.handle = HNDL(handle);
954 params.reason = hci->device.reject_reason;
955 bt_hci_event(hci, EVT_DISCONN_COMPLETE,
956 &params, EVT_DISCONN_COMPLETE_SIZE);
957 }
958
959 static int bt_hci_name_req(struct bt_hci_s *hci, bdaddr_t *bdaddr)
960 {
961 struct bt_device_s *slave;
962 evt_remote_name_req_complete params;
963
964 for (slave = hci->device.net->slave; slave; slave = slave->next)
965 if (slave->page_scan && !bacmp(&slave->bd_addr, bdaddr))
966 break;
967 if (!slave)
968 return -ENODEV;
969
970 bt_hci_event_status(hci, HCI_SUCCESS);
971
972 params.status = HCI_SUCCESS;
973 bacpy(&params.bdaddr, &slave->bd_addr);
974 pstrcpy(params.name, sizeof(params.name), slave->lmp_name ?: "");
975 bt_hci_event(hci, EVT_REMOTE_NAME_REQ_COMPLETE,
976 &params, EVT_REMOTE_NAME_REQ_COMPLETE_SIZE);
977
978 return 0;
979 }
980
981 static int bt_hci_features_req(struct bt_hci_s *hci, uint16_t handle)
982 {
983 struct bt_device_s *slave;
984 evt_read_remote_features_complete params;
985
986 if (bt_hci_handle_bad(hci, handle))
987 return -ENODEV;
988
989 slave = bt_hci_remote_dev(hci, handle);
990
991 bt_hci_event_status(hci, HCI_SUCCESS);
992
993 params.status = HCI_SUCCESS;
994 params.handle = HNDL(handle);
995 params.features[0] = (slave->lmp_caps >> 0) & 0xff;
996 params.features[1] = (slave->lmp_caps >> 8) & 0xff;
997 params.features[2] = (slave->lmp_caps >> 16) & 0xff;
998 params.features[3] = (slave->lmp_caps >> 24) & 0xff;
999 params.features[4] = (slave->lmp_caps >> 32) & 0xff;
1000 params.features[5] = (slave->lmp_caps >> 40) & 0xff;
1001 params.features[6] = (slave->lmp_caps >> 48) & 0xff;
1002 params.features[7] = (slave->lmp_caps >> 56) & 0xff;
1003 bt_hci_event(hci, EVT_READ_REMOTE_FEATURES_COMPLETE,
1004 &params, EVT_READ_REMOTE_FEATURES_COMPLETE_SIZE);
1005
1006 return 0;
1007 }
1008
1009 static int bt_hci_version_req(struct bt_hci_s *hci, uint16_t handle)
1010 {
1011 evt_read_remote_version_complete params;
1012
1013 if (bt_hci_handle_bad(hci, handle))
1014 return -ENODEV;
1015
1016 bt_hci_remote_dev(hci, handle);
1017
1018 bt_hci_event_status(hci, HCI_SUCCESS);
1019
1020 params.status = HCI_SUCCESS;
1021 params.handle = HNDL(handle);
1022 params.lmp_ver = 0x03;
1023 params.manufacturer = cpu_to_le16(0xa000);
1024 params.lmp_subver = cpu_to_le16(0xa607);
1025 bt_hci_event(hci, EVT_READ_REMOTE_VERSION_COMPLETE,
1026 &params, EVT_READ_REMOTE_VERSION_COMPLETE_SIZE);
1027
1028 return 0;
1029 }
1030
1031 static int bt_hci_clkoffset_req(struct bt_hci_s *hci, uint16_t handle)
1032 {
1033 struct bt_device_s *slave;
1034 evt_read_clock_offset_complete params;
1035
1036 if (bt_hci_handle_bad(hci, handle))
1037 return -ENODEV;
1038
1039 slave = bt_hci_remote_dev(hci, handle);
1040
1041 bt_hci_event_status(hci, HCI_SUCCESS);
1042
1043 params.status = HCI_SUCCESS;
1044 params.handle = HNDL(handle);
1045 /* TODO: return the clkoff *differenece* */
1046 params.clock_offset = slave->clkoff; /* Note: no swapping */
1047 bt_hci_event(hci, EVT_READ_CLOCK_OFFSET_COMPLETE,
1048 &params, EVT_READ_CLOCK_OFFSET_COMPLETE_SIZE);
1049
1050 return 0;
1051 }
1052
1053 static void bt_hci_event_mode(struct bt_hci_s *hci, struct bt_link_s *link,
1054 uint16_t handle)
1055 {
1056 evt_mode_change params = {
1057 .status = HCI_SUCCESS,
1058 .handle = HNDL(handle),
1059 .mode = link->acl_mode,
1060 .interval = cpu_to_le16(link->acl_interval),
1061 };
1062
1063 bt_hci_event(hci, EVT_MODE_CHANGE, &params, EVT_MODE_CHANGE_SIZE);
1064 }
1065
1066 static void bt_hci_lmp_mode_change_master(struct bt_hci_s *hci,
1067 struct bt_link_s *link, int mode, uint16_t interval)
1068 {
1069 link->acl_mode = mode;
1070 link->acl_interval = interval;
1071
1072 bt_hci_event_mode(hci, link, link->handle);
1073
1074 link->slave->lmp_mode_change(link);
1075 }
1076
1077 static void bt_hci_lmp_mode_change_slave(struct bt_link_s *btlink)
1078 {
1079 struct bt_hci_link_s *link = (struct bt_hci_link_s *) btlink;
1080 struct bt_hci_s *hci = hci_from_device(btlink->slave);
1081
1082 bt_hci_event_mode(hci, btlink, link->handle);
1083 }
1084
1085 static int bt_hci_mode_change(struct bt_hci_s *hci, uint16_t handle,
1086 int interval, int mode)
1087 {
1088 struct bt_hci_master_link_s *link;
1089
1090 if (bt_hci_handle_bad(hci, handle) || !bt_hci_role_master(hci, handle))
1091 return -ENODEV;
1092
1093 link = &hci->lm.handle[handle & ~HCI_HANDLE_OFFSET];
1094 if (link->link->acl_mode != acl_active) {
1095 bt_hci_event_status(hci, HCI_COMMAND_DISALLOWED);
1096 return 0;
1097 }
1098
1099 bt_hci_event_status(hci, HCI_SUCCESS);
1100
1101 timer_mod(link->acl_mode_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1102 muldiv64(interval * 625, get_ticks_per_sec(), 1000000));
1103 bt_hci_lmp_mode_change_master(hci, link->link, mode, interval);
1104
1105 return 0;
1106 }
1107
1108 static int bt_hci_mode_cancel(struct bt_hci_s *hci, uint16_t handle, int mode)
1109 {
1110 struct bt_hci_master_link_s *link;
1111
1112 if (bt_hci_handle_bad(hci, handle) || !bt_hci_role_master(hci, handle))
1113 return -ENODEV;
1114
1115 link = &hci->lm.handle[handle & ~HCI_HANDLE_OFFSET];
1116 if (link->link->acl_mode != mode) {
1117 bt_hci_event_status(hci, HCI_COMMAND_DISALLOWED);
1118
1119 return 0;
1120 }
1121
1122 bt_hci_event_status(hci, HCI_SUCCESS);
1123
1124 timer_del(link->acl_mode_timer);
1125 bt_hci_lmp_mode_change_master(hci, link->link, acl_active, 0);
1126
1127 return 0;
1128 }
1129
1130 static void bt_hci_mode_tick(void *opaque)
1131 {
1132 struct bt_link_s *link = opaque;
1133 struct bt_hci_s *hci = hci_from_device(link->host);
1134
1135 bt_hci_lmp_mode_change_master(hci, link, acl_active, 0);
1136 }
1137
1138 static void bt_hci_reset(struct bt_hci_s *hci)
1139 {
1140 hci->acl_len = 0;
1141 hci->last_cmd = 0;
1142 hci->lm.connecting = 0;
1143
1144 hci->event_mask[0] = 0xff;
1145 hci->event_mask[1] = 0xff;
1146 hci->event_mask[2] = 0xff;
1147 hci->event_mask[3] = 0xff;
1148 hci->event_mask[4] = 0xff;
1149 hci->event_mask[5] = 0x1f;
1150 hci->event_mask[6] = 0x00;
1151 hci->event_mask[7] = 0x00;
1152 hci->device.inquiry_scan = 0;
1153 hci->device.page_scan = 0;
1154 if (hci->device.lmp_name)
1155 g_free((void *) hci->device.lmp_name);
1156 hci->device.lmp_name = NULL;
1157 hci->device.class[0] = 0x00;
1158 hci->device.class[1] = 0x00;
1159 hci->device.class[2] = 0x00;
1160 hci->voice_setting = 0x0000;
1161 hci->conn_accept_tout = 0x1f40;
1162 hci->lm.inquiry_mode = 0x00;
1163
1164 hci->psb_handle = 0x000;
1165 hci->asb_handle = 0x000;
1166
1167 /* XXX: timer_del(sl->acl_mode_timer); for all links */
1168 timer_del(hci->lm.inquiry_done);
1169 timer_del(hci->lm.inquiry_next);
1170 timer_del(hci->conn_accept_timer);
1171 }
1172
1173 static void bt_hci_read_local_version_rp(struct bt_hci_s *hci)
1174 {
1175 read_local_version_rp lv = {
1176 .status = HCI_SUCCESS,
1177 .hci_ver = 0x03,
1178 .hci_rev = cpu_to_le16(0xa607),
1179 .lmp_ver = 0x03,
1180 .manufacturer = cpu_to_le16(0xa000),
1181 .lmp_subver = cpu_to_le16(0xa607),
1182 };
1183
1184 bt_hci_event_complete(hci, &lv, READ_LOCAL_VERSION_RP_SIZE);
1185 }
1186
1187 static void bt_hci_read_local_commands_rp(struct bt_hci_s *hci)
1188 {
1189 read_local_commands_rp lc = {
1190 .status = HCI_SUCCESS,
1191 .commands = {
1192 /* Keep updated! */
1193 /* Also, keep in sync with hci->device.lmp_caps in bt_new_hci */
1194 0xbf, 0x80, 0xf9, 0x03, 0xb2, 0xc0, 0x03, 0xc3,
1195 0x00, 0x0f, 0x80, 0x00, 0xc0, 0x00, 0xe8, 0x13,
1196 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1197 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1198 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1199 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1200 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1201 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1202 },
1203 };
1204
1205 bt_hci_event_complete(hci, &lc, READ_LOCAL_COMMANDS_RP_SIZE);
1206 }
1207
1208 static void bt_hci_read_local_features_rp(struct bt_hci_s *hci)
1209 {
1210 read_local_features_rp lf = {
1211 .status = HCI_SUCCESS,
1212 .features = {
1213 (hci->device.lmp_caps >> 0) & 0xff,
1214 (hci->device.lmp_caps >> 8) & 0xff,
1215 (hci->device.lmp_caps >> 16) & 0xff,
1216 (hci->device.lmp_caps >> 24) & 0xff,
1217 (hci->device.lmp_caps >> 32) & 0xff,
1218 (hci->device.lmp_caps >> 40) & 0xff,
1219 (hci->device.lmp_caps >> 48) & 0xff,
1220 (hci->device.lmp_caps >> 56) & 0xff,
1221 },
1222 };
1223
1224 bt_hci_event_complete(hci, &lf, READ_LOCAL_FEATURES_RP_SIZE);
1225 }
1226
1227 static void bt_hci_read_local_ext_features_rp(struct bt_hci_s *hci, int page)
1228 {
1229 read_local_ext_features_rp lef = {
1230 .status = HCI_SUCCESS,
1231 .page_num = page,
1232 .max_page_num = 0x00,
1233 .features = {
1234 /* Keep updated! */
1235 0x5f, 0x35, 0x85, 0x7e, 0x9b, 0x19, 0x00, 0x80,
1236 },
1237 };
1238 if (page)
1239 memset(lef.features, 0, sizeof(lef.features));
1240
1241 bt_hci_event_complete(hci, &lef, READ_LOCAL_EXT_FEATURES_RP_SIZE);
1242 }
1243
1244 static void bt_hci_read_buffer_size_rp(struct bt_hci_s *hci)
1245 {
1246 read_buffer_size_rp bs = {
1247 /* This can be made configurable, for one standard USB dongle HCI
1248 * the four values are cpu_to_le16(0x0180), 0x40,
1249 * cpu_to_le16(0x0008), cpu_to_le16(0x0008). */
1250 .status = HCI_SUCCESS,
1251 .acl_mtu = cpu_to_le16(0x0200),
1252 .sco_mtu = 0,
1253 .acl_max_pkt = cpu_to_le16(0x0001),
1254 .sco_max_pkt = cpu_to_le16(0x0000),
1255 };
1256
1257 bt_hci_event_complete(hci, &bs, READ_BUFFER_SIZE_RP_SIZE);
1258 }
1259
1260 /* Deprecated in V2.0 (page 661) */
1261 static void bt_hci_read_country_code_rp(struct bt_hci_s *hci)
1262 {
1263 read_country_code_rp cc ={
1264 .status = HCI_SUCCESS,
1265 .country_code = 0x00, /* North America & Europe^1 and Japan */
1266 };
1267
1268 bt_hci_event_complete(hci, &cc, READ_COUNTRY_CODE_RP_SIZE);
1269
1270 /* ^1. Except France, sorry */
1271 }
1272
1273 static void bt_hci_read_bd_addr_rp(struct bt_hci_s *hci)
1274 {
1275 read_bd_addr_rp ba = {
1276 .status = HCI_SUCCESS,
1277 .bdaddr = BAINIT(&hci->device.bd_addr),
1278 };
1279
1280 bt_hci_event_complete(hci, &ba, READ_BD_ADDR_RP_SIZE);
1281 }
1282
1283 static int bt_hci_link_quality_rp(struct bt_hci_s *hci, uint16_t handle)
1284 {
1285 read_link_quality_rp lq = {
1286 .status = HCI_SUCCESS,
1287 .handle = HNDL(handle),
1288 .link_quality = 0xff,
1289 };
1290
1291 if (bt_hci_handle_bad(hci, handle))
1292 lq.status = HCI_NO_CONNECTION;
1293
1294 bt_hci_event_complete(hci, &lq, READ_LINK_QUALITY_RP_SIZE);
1295 return 0;
1296 }
1297
1298 /* Generate a Command Complete event with only the Status parameter */
1299 static inline void bt_hci_event_complete_status(struct bt_hci_s *hci,
1300 uint8_t status)
1301 {
1302 bt_hci_event_complete(hci, &status, 1);
1303 }
1304
1305 static inline void bt_hci_event_complete_conn_cancel(struct bt_hci_s *hci,
1306 uint8_t status, bdaddr_t *bd_addr)
1307 {
1308 create_conn_cancel_rp params = {
1309 .status = status,
1310 .bdaddr = BAINIT(bd_addr),
1311 };
1312
1313 bt_hci_event_complete(hci, &params, CREATE_CONN_CANCEL_RP_SIZE);
1314 }
1315
1316 static inline void bt_hci_event_auth_complete(struct bt_hci_s *hci,
1317 uint16_t handle)
1318 {
1319 evt_auth_complete params = {
1320 .status = HCI_SUCCESS,
1321 .handle = HNDL(handle),
1322 };
1323
1324 bt_hci_event(hci, EVT_AUTH_COMPLETE, &params, EVT_AUTH_COMPLETE_SIZE);
1325 }
1326
1327 static inline void bt_hci_event_encrypt_change(struct bt_hci_s *hci,
1328 uint16_t handle, uint8_t mode)
1329 {
1330 evt_encrypt_change params = {
1331 .status = HCI_SUCCESS,
1332 .handle = HNDL(handle),
1333 .encrypt = mode,
1334 };
1335
1336 bt_hci_event(hci, EVT_ENCRYPT_CHANGE, &params, EVT_ENCRYPT_CHANGE_SIZE);
1337 }
1338
1339 static inline void bt_hci_event_complete_name_cancel(struct bt_hci_s *hci,
1340 bdaddr_t *bd_addr)
1341 {
1342 remote_name_req_cancel_rp params = {
1343 .status = HCI_INVALID_PARAMETERS,
1344 .bdaddr = BAINIT(bd_addr),
1345 };
1346
1347 bt_hci_event_complete(hci, &params, REMOTE_NAME_REQ_CANCEL_RP_SIZE);
1348 }
1349
1350 static inline void bt_hci_event_read_remote_ext_features(struct bt_hci_s *hci,
1351 uint16_t handle)
1352 {
1353 evt_read_remote_ext_features_complete params = {
1354 .status = HCI_UNSUPPORTED_FEATURE,
1355 .handle = HNDL(handle),
1356 /* Rest uninitialised */
1357 };
1358
1359 bt_hci_event(hci, EVT_READ_REMOTE_EXT_FEATURES_COMPLETE,
1360 &params, EVT_READ_REMOTE_EXT_FEATURES_COMPLETE_SIZE);
1361 }
1362
1363 static inline void bt_hci_event_complete_lmp_handle(struct bt_hci_s *hci,
1364 uint16_t handle)
1365 {
1366 read_lmp_handle_rp params = {
1367 .status = HCI_NO_CONNECTION,
1368 .handle = HNDL(handle),
1369 .reserved = 0,
1370 /* Rest uninitialised */
1371 };
1372
1373 bt_hci_event_complete(hci, &params, READ_LMP_HANDLE_RP_SIZE);
1374 }
1375
1376 static inline void bt_hci_event_complete_role_discovery(struct bt_hci_s *hci,
1377 int status, uint16_t handle, int master)
1378 {
1379 role_discovery_rp params = {
1380 .status = status,
1381 .handle = HNDL(handle),
1382 .role = master ? 0x00 : 0x01,
1383 };
1384
1385 bt_hci_event_complete(hci, &params, ROLE_DISCOVERY_RP_SIZE);
1386 }
1387
1388 static inline void bt_hci_event_complete_flush(struct bt_hci_s *hci,
1389 int status, uint16_t handle)
1390 {
1391 flush_rp params = {
1392 .status = status,
1393 .handle = HNDL(handle),
1394 };
1395
1396 bt_hci_event_complete(hci, &params, FLUSH_RP_SIZE);
1397 }
1398
1399 static inline void bt_hci_event_complete_read_local_name(struct bt_hci_s *hci)
1400 {
1401 read_local_name_rp params;
1402 params.status = HCI_SUCCESS;
1403 memset(params.name, 0, sizeof(params.name));
1404 if (hci->device.lmp_name)
1405 pstrcpy(params.name, sizeof(params.name), hci->device.lmp_name);
1406
1407 bt_hci_event_complete(hci, &params, READ_LOCAL_NAME_RP_SIZE);
1408 }
1409
1410 static inline void bt_hci_event_complete_read_conn_accept_timeout(
1411 struct bt_hci_s *hci)
1412 {
1413 read_conn_accept_timeout_rp params = {
1414 .status = HCI_SUCCESS,
1415 .timeout = cpu_to_le16(hci->conn_accept_tout),
1416 };
1417
1418 bt_hci_event_complete(hci, &params, READ_CONN_ACCEPT_TIMEOUT_RP_SIZE);
1419 }
1420
1421 static inline void bt_hci_event_complete_read_scan_enable(struct bt_hci_s *hci)
1422 {
1423 read_scan_enable_rp params = {
1424 .status = HCI_SUCCESS,
1425 .enable =
1426 (hci->device.inquiry_scan ? SCAN_INQUIRY : 0) |
1427 (hci->device.page_scan ? SCAN_PAGE : 0),
1428 };
1429
1430 bt_hci_event_complete(hci, &params, READ_SCAN_ENABLE_RP_SIZE);
1431 }
1432
1433 static inline void bt_hci_event_complete_read_local_class(struct bt_hci_s *hci)
1434 {
1435 read_class_of_dev_rp params;
1436
1437 params.status = HCI_SUCCESS;
1438 memcpy(params.dev_class, hci->device.class, sizeof(params.dev_class));
1439
1440 bt_hci_event_complete(hci, &params, READ_CLASS_OF_DEV_RP_SIZE);
1441 }
1442
1443 static inline void bt_hci_event_complete_voice_setting(struct bt_hci_s *hci)
1444 {
1445 read_voice_setting_rp params = {
1446 .status = HCI_SUCCESS,
1447 .voice_setting = hci->voice_setting, /* Note: no swapping */
1448 };
1449
1450 bt_hci_event_complete(hci, &params, READ_VOICE_SETTING_RP_SIZE);
1451 }
1452
1453 static inline void bt_hci_event_complete_read_inquiry_mode(
1454 struct bt_hci_s *hci)
1455 {
1456 read_inquiry_mode_rp params = {
1457 .status = HCI_SUCCESS,
1458 .mode = hci->lm.inquiry_mode,
1459 };
1460
1461 bt_hci_event_complete(hci, &params, READ_INQUIRY_MODE_RP_SIZE);
1462 }
1463
1464 static inline void bt_hci_event_num_comp_pkts(struct bt_hci_s *hci,
1465 uint16_t handle, int packets)
1466 {
1467 uint16_t buf[EVT_NUM_COMP_PKTS_SIZE(1) / 2 + 1];
1468 evt_num_comp_pkts *params = (void *) ((uint8_t *) buf + 1);
1469
1470 params->num_hndl = 1;
1471 params->connection->handle = HNDL(handle);
1472 params->connection->num_packets = cpu_to_le16(packets);
1473
1474 bt_hci_event(hci, EVT_NUM_COMP_PKTS, params, EVT_NUM_COMP_PKTS_SIZE(1));
1475 }
1476
1477 static void bt_submit_hci(struct HCIInfo *info,
1478 const uint8_t *data, int length)
1479 {
1480 struct bt_hci_s *hci = hci_from_info(info);
1481 uint16_t cmd;
1482 int paramlen, i;
1483
1484 if (length < HCI_COMMAND_HDR_SIZE)
1485 goto short_hci;
1486
1487 memcpy(&hci->last_cmd, data, 2);
1488
1489 cmd = (data[1] << 8) | data[0];
1490 paramlen = data[2];
1491 if (cmd_opcode_ogf(cmd) == 0 || cmd_opcode_ocf(cmd) == 0) /* NOP */
1492 return;
1493
1494 data += HCI_COMMAND_HDR_SIZE;
1495 length -= HCI_COMMAND_HDR_SIZE;
1496
1497 if (paramlen > length)
1498 return;
1499
1500 #define PARAM(cmd, param) (((cmd##_cp *) data)->param)
1501 #define PARAM16(cmd, param) le16_to_cpup(&PARAM(cmd, param))
1502 #define PARAMHANDLE(cmd) HNDL(PARAM(cmd, handle))
1503 #define LENGTH_CHECK(cmd) if (length < sizeof(cmd##_cp)) goto short_hci
1504 /* Note: the supported commands bitmask in bt_hci_read_local_commands_rp
1505 * needs to be updated every time a command is implemented here! */
1506 switch (cmd) {
1507 case cmd_opcode_pack(OGF_LINK_CTL, OCF_INQUIRY):
1508 LENGTH_CHECK(inquiry);
1509
1510 if (PARAM(inquiry, length) < 1) {
1511 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1512 break;
1513 }
1514
1515 hci->lm.inquire = 1;
1516 hci->lm.periodic = 0;
1517 hci->lm.responses_left = PARAM(inquiry, num_rsp) ?: INT_MAX;
1518 hci->lm.responses = 0;
1519 bt_hci_event_status(hci, HCI_SUCCESS);
1520 bt_hci_inquiry_start(hci, PARAM(inquiry, length));
1521 break;
1522
1523 case cmd_opcode_pack(OGF_LINK_CTL, OCF_INQUIRY_CANCEL):
1524 if (!hci->lm.inquire || hci->lm.periodic) {
1525 fprintf(stderr, "%s: Inquiry Cancel should only be issued after "
1526 "the Inquiry command has been issued, a Command "
1527 "Status event has been received for the Inquiry "
1528 "command, and before the Inquiry Complete event "
1529 "occurs", __FUNCTION__);
1530 bt_hci_event_complete_status(hci, HCI_COMMAND_DISALLOWED);
1531 break;
1532 }
1533
1534 hci->lm.inquire = 0;
1535 timer_del(hci->lm.inquiry_done);
1536 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1537 break;
1538
1539 case cmd_opcode_pack(OGF_LINK_CTL, OCF_PERIODIC_INQUIRY):
1540 LENGTH_CHECK(periodic_inquiry);
1541
1542 if (!(PARAM(periodic_inquiry, length) <
1543 PARAM16(periodic_inquiry, min_period) &&
1544 PARAM16(periodic_inquiry, min_period) <
1545 PARAM16(periodic_inquiry, max_period)) ||
1546 PARAM(periodic_inquiry, length) < 1 ||
1547 PARAM16(periodic_inquiry, min_period) < 2 ||
1548 PARAM16(periodic_inquiry, max_period) < 3) {
1549 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1550 break;
1551 }
1552
1553 hci->lm.inquire = 1;
1554 hci->lm.periodic = 1;
1555 hci->lm.responses_left = PARAM(periodic_inquiry, num_rsp);
1556 hci->lm.responses = 0;
1557 hci->lm.inquiry_period = PARAM16(periodic_inquiry, max_period);
1558 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1559 bt_hci_inquiry_start(hci, PARAM(periodic_inquiry, length));
1560 break;
1561
1562 case cmd_opcode_pack(OGF_LINK_CTL, OCF_EXIT_PERIODIC_INQUIRY):
1563 if (!hci->lm.inquire || !hci->lm.periodic) {
1564 fprintf(stderr, "%s: Inquiry Cancel should only be issued after "
1565 "the Inquiry command has been issued, a Command "
1566 "Status event has been received for the Inquiry "
1567 "command, and before the Inquiry Complete event "
1568 "occurs", __FUNCTION__);
1569 bt_hci_event_complete_status(hci, HCI_COMMAND_DISALLOWED);
1570 break;
1571 }
1572 hci->lm.inquire = 0;
1573 timer_del(hci->lm.inquiry_done);
1574 timer_del(hci->lm.inquiry_next);
1575 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1576 break;
1577
1578 case cmd_opcode_pack(OGF_LINK_CTL, OCF_CREATE_CONN):
1579 LENGTH_CHECK(create_conn);
1580
1581 if (hci->lm.connecting >= HCI_HANDLES_MAX) {
1582 bt_hci_event_status(hci, HCI_REJECTED_LIMITED_RESOURCES);
1583 break;
1584 }
1585 bt_hci_event_status(hci, HCI_SUCCESS);
1586
1587 if (bt_hci_connect(hci, &PARAM(create_conn, bdaddr)))
1588 bt_hci_connection_reject_event(hci, &PARAM(create_conn, bdaddr));
1589 break;
1590
1591 case cmd_opcode_pack(OGF_LINK_CTL, OCF_DISCONNECT):
1592 LENGTH_CHECK(disconnect);
1593
1594 if (bt_hci_handle_bad(hci, PARAMHANDLE(disconnect))) {
1595 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1596 break;
1597 }
1598
1599 bt_hci_event_status(hci, HCI_SUCCESS);
1600 bt_hci_disconnect(hci, PARAMHANDLE(disconnect),
1601 PARAM(disconnect, reason));
1602 break;
1603
1604 case cmd_opcode_pack(OGF_LINK_CTL, OCF_CREATE_CONN_CANCEL):
1605 LENGTH_CHECK(create_conn_cancel);
1606
1607 if (bt_hci_lmp_connection_ready(hci,
1608 &PARAM(create_conn_cancel, bdaddr))) {
1609 for (i = 0; i < HCI_HANDLES_MAX; i ++)
1610 if (bt_hci_role_master(hci, i) && hci->lm.handle[i].link &&
1611 !bacmp(&hci->lm.handle[i].link->slave->bd_addr,
1612 &PARAM(create_conn_cancel, bdaddr)))
1613 break;
1614
1615 bt_hci_event_complete_conn_cancel(hci, i < HCI_HANDLES_MAX ?
1616 HCI_ACL_CONNECTION_EXISTS : HCI_NO_CONNECTION,
1617 &PARAM(create_conn_cancel, bdaddr));
1618 } else
1619 bt_hci_event_complete_conn_cancel(hci, HCI_SUCCESS,
1620 &PARAM(create_conn_cancel, bdaddr));
1621 break;
1622
1623 case cmd_opcode_pack(OGF_LINK_CTL, OCF_ACCEPT_CONN_REQ):
1624 LENGTH_CHECK(accept_conn_req);
1625
1626 if (!hci->conn_req_host ||
1627 bacmp(&PARAM(accept_conn_req, bdaddr),
1628 &hci->conn_req_host->bd_addr)) {
1629 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1630 break;
1631 }
1632
1633 bt_hci_event_status(hci, HCI_SUCCESS);
1634 bt_hci_connection_accept(hci, hci->conn_req_host);
1635 hci->conn_req_host = NULL;
1636 break;
1637
1638 case cmd_opcode_pack(OGF_LINK_CTL, OCF_REJECT_CONN_REQ):
1639 LENGTH_CHECK(reject_conn_req);
1640
1641 if (!hci->conn_req_host ||
1642 bacmp(&PARAM(reject_conn_req, bdaddr),
1643 &hci->conn_req_host->bd_addr)) {
1644 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1645 break;
1646 }
1647
1648 bt_hci_event_status(hci, HCI_SUCCESS);
1649 bt_hci_connection_reject(hci, hci->conn_req_host,
1650 PARAM(reject_conn_req, reason));
1651 bt_hci_connection_reject_event(hci, &hci->conn_req_host->bd_addr);
1652 hci->conn_req_host = NULL;
1653 break;
1654
1655 case cmd_opcode_pack(OGF_LINK_CTL, OCF_AUTH_REQUESTED):
1656 LENGTH_CHECK(auth_requested);
1657
1658 if (bt_hci_handle_bad(hci, PARAMHANDLE(auth_requested)))
1659 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1660 else {
1661 bt_hci_event_status(hci, HCI_SUCCESS);
1662 bt_hci_event_auth_complete(hci, PARAMHANDLE(auth_requested));
1663 }
1664 break;
1665
1666 case cmd_opcode_pack(OGF_LINK_CTL, OCF_SET_CONN_ENCRYPT):
1667 LENGTH_CHECK(set_conn_encrypt);
1668
1669 if (bt_hci_handle_bad(hci, PARAMHANDLE(set_conn_encrypt)))
1670 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1671 else {
1672 bt_hci_event_status(hci, HCI_SUCCESS);
1673 bt_hci_event_encrypt_change(hci,
1674 PARAMHANDLE(set_conn_encrypt),
1675 PARAM(set_conn_encrypt, encrypt));
1676 }
1677 break;
1678
1679 case cmd_opcode_pack(OGF_LINK_CTL, OCF_REMOTE_NAME_REQ):
1680 LENGTH_CHECK(remote_name_req);
1681
1682 if (bt_hci_name_req(hci, &PARAM(remote_name_req, bdaddr)))
1683 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1684 break;
1685
1686 case cmd_opcode_pack(OGF_LINK_CTL, OCF_REMOTE_NAME_REQ_CANCEL):
1687 LENGTH_CHECK(remote_name_req_cancel);
1688
1689 bt_hci_event_complete_name_cancel(hci,
1690 &PARAM(remote_name_req_cancel, bdaddr));
1691 break;
1692
1693 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_REMOTE_FEATURES):
1694 LENGTH_CHECK(read_remote_features);
1695
1696 if (bt_hci_features_req(hci, PARAMHANDLE(read_remote_features)))
1697 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1698 break;
1699
1700 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_REMOTE_EXT_FEATURES):
1701 LENGTH_CHECK(read_remote_ext_features);
1702
1703 if (bt_hci_handle_bad(hci, PARAMHANDLE(read_remote_ext_features)))
1704 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1705 else {
1706 bt_hci_event_status(hci, HCI_SUCCESS);
1707 bt_hci_event_read_remote_ext_features(hci,
1708 PARAMHANDLE(read_remote_ext_features));
1709 }
1710 break;
1711
1712 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_REMOTE_VERSION):
1713 LENGTH_CHECK(read_remote_version);
1714
1715 if (bt_hci_version_req(hci, PARAMHANDLE(read_remote_version)))
1716 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1717 break;
1718
1719 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_CLOCK_OFFSET):
1720 LENGTH_CHECK(read_clock_offset);
1721
1722 if (bt_hci_clkoffset_req(hci, PARAMHANDLE(read_clock_offset)))
1723 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1724 break;
1725
1726 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_LMP_HANDLE):
1727 LENGTH_CHECK(read_lmp_handle);
1728
1729 /* TODO: */
1730 bt_hci_event_complete_lmp_handle(hci, PARAMHANDLE(read_lmp_handle));
1731 break;
1732
1733 case cmd_opcode_pack(OGF_LINK_POLICY, OCF_HOLD_MODE):
1734 LENGTH_CHECK(hold_mode);
1735
1736 if (PARAM16(hold_mode, min_interval) >
1737 PARAM16(hold_mode, max_interval) ||
1738 PARAM16(hold_mode, min_interval) < 0x0002 ||
1739 PARAM16(hold_mode, max_interval) > 0xff00 ||
1740 (PARAM16(hold_mode, min_interval) & 1) ||
1741 (PARAM16(hold_mode, max_interval) & 1)) {
1742 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1743 break;
1744 }
1745
1746 if (bt_hci_mode_change(hci, PARAMHANDLE(hold_mode),
1747 PARAM16(hold_mode, max_interval),
1748 acl_hold))
1749 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1750 break;
1751
1752 case cmd_opcode_pack(OGF_LINK_POLICY, OCF_PARK_MODE):
1753 LENGTH_CHECK(park_mode);
1754
1755 if (PARAM16(park_mode, min_interval) >
1756 PARAM16(park_mode, max_interval) ||
1757 PARAM16(park_mode, min_interval) < 0x000e ||
1758 (PARAM16(park_mode, min_interval) & 1) ||
1759 (PARAM16(park_mode, max_interval) & 1)) {
1760 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1761 break;
1762 }
1763
1764 if (bt_hci_mode_change(hci, PARAMHANDLE(park_mode),
1765 PARAM16(park_mode, max_interval),
1766 acl_parked))
1767 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1768 break;
1769
1770 case cmd_opcode_pack(OGF_LINK_POLICY, OCF_EXIT_PARK_MODE):
1771 LENGTH_CHECK(exit_park_mode);
1772
1773 if (bt_hci_mode_cancel(hci, PARAMHANDLE(exit_park_mode),
1774 acl_parked))
1775 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1776 break;
1777
1778 case cmd_opcode_pack(OGF_LINK_POLICY, OCF_ROLE_DISCOVERY):
1779 LENGTH_CHECK(role_discovery);
1780
1781 if (bt_hci_handle_bad(hci, PARAMHANDLE(role_discovery)))
1782 bt_hci_event_complete_role_discovery(hci,
1783 HCI_NO_CONNECTION, PARAMHANDLE(role_discovery), 0);
1784 else
1785 bt_hci_event_complete_role_discovery(hci,
1786 HCI_SUCCESS, PARAMHANDLE(role_discovery),
1787 bt_hci_role_master(hci,
1788 PARAMHANDLE(role_discovery)));
1789 break;
1790
1791 case cmd_opcode_pack(OGF_HOST_CTL, OCF_SET_EVENT_MASK):
1792 LENGTH_CHECK(set_event_mask);
1793
1794 memcpy(hci->event_mask, PARAM(set_event_mask, mask), 8);
1795 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1796 break;
1797
1798 case cmd_opcode_pack(OGF_HOST_CTL, OCF_RESET):
1799 bt_hci_reset(hci);
1800 bt_hci_event_status(hci, HCI_SUCCESS);
1801 break;
1802
1803 case cmd_opcode_pack(OGF_HOST_CTL, OCF_SET_EVENT_FLT):
1804 if (length >= 1 && PARAM(set_event_flt, flt_type) == FLT_CLEAR_ALL)
1805 /* No length check */;
1806 else
1807 LENGTH_CHECK(set_event_flt);
1808
1809 /* Filters are not implemented */
1810 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1811 break;
1812
1813 case cmd_opcode_pack(OGF_HOST_CTL, OCF_FLUSH):
1814 LENGTH_CHECK(flush);
1815
1816 if (bt_hci_handle_bad(hci, PARAMHANDLE(flush)))
1817 bt_hci_event_complete_flush(hci,
1818 HCI_NO_CONNECTION, PARAMHANDLE(flush));
1819 else {
1820 /* TODO: ordering? */
1821 bt_hci_event(hci, EVT_FLUSH_OCCURRED,
1822 &PARAM(flush, handle),
1823 EVT_FLUSH_OCCURRED_SIZE);
1824 bt_hci_event_complete_flush(hci,
1825 HCI_SUCCESS, PARAMHANDLE(flush));
1826 }
1827 break;
1828
1829 case cmd_opcode_pack(OGF_HOST_CTL, OCF_CHANGE_LOCAL_NAME):
1830 LENGTH_CHECK(change_local_name);
1831
1832 if (hci->device.lmp_name)
1833 g_free((void *) hci->device.lmp_name);
1834 hci->device.lmp_name = g_strndup(PARAM(change_local_name, name),
1835 sizeof(PARAM(change_local_name, name)));
1836 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1837 break;
1838
1839 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_LOCAL_NAME):
1840 bt_hci_event_complete_read_local_name(hci);
1841 break;
1842
1843 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_CONN_ACCEPT_TIMEOUT):
1844 bt_hci_event_complete_read_conn_accept_timeout(hci);
1845 break;
1846
1847 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_CONN_ACCEPT_TIMEOUT):
1848 /* TODO */
1849 LENGTH_CHECK(write_conn_accept_timeout);
1850
1851 if (PARAM16(write_conn_accept_timeout, timeout) < 0x0001 ||
1852 PARAM16(write_conn_accept_timeout, timeout) > 0xb540) {
1853 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1854 break;
1855 }
1856
1857 hci->conn_accept_tout = PARAM16(write_conn_accept_timeout, timeout);
1858 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1859 break;
1860
1861 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_SCAN_ENABLE):
1862 bt_hci_event_complete_read_scan_enable(hci);
1863 break;
1864
1865 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_SCAN_ENABLE):
1866 LENGTH_CHECK(write_scan_enable);
1867
1868 /* TODO: check that the remaining bits are all 0 */
1869 hci->device.inquiry_scan =
1870 !!(PARAM(write_scan_enable, scan_enable) & SCAN_INQUIRY);
1871 hci->device.page_scan =
1872 !!(PARAM(write_scan_enable, scan_enable) & SCAN_PAGE);
1873 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1874 break;
1875
1876 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_CLASS_OF_DEV):
1877 bt_hci_event_complete_read_local_class(hci);
1878 break;
1879
1880 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_CLASS_OF_DEV):
1881 LENGTH_CHECK(write_class_of_dev);
1882
1883 memcpy(hci->device.class, PARAM(write_class_of_dev, dev_class),
1884 sizeof(PARAM(write_class_of_dev, dev_class)));
1885 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1886 break;
1887
1888 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_VOICE_SETTING):
1889 bt_hci_event_complete_voice_setting(hci);
1890 break;
1891
1892 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_VOICE_SETTING):
1893 LENGTH_CHECK(write_voice_setting);
1894
1895 hci->voice_setting = PARAM(write_voice_setting, voice_setting);
1896 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1897 break;
1898
1899 case cmd_opcode_pack(OGF_HOST_CTL, OCF_HOST_NUMBER_OF_COMPLETED_PACKETS):
1900 if (length < data[0] * 2 + 1)
1901 goto short_hci;
1902
1903 for (i = 0; i < data[0]; i ++)
1904 if (bt_hci_handle_bad(hci,
1905 data[i * 2 + 1] | (data[i * 2 + 2] << 8)))
1906 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1907 break;
1908
1909 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_INQUIRY_MODE):
1910 /* Only if (local_features[3] & 0x40) && (local_commands[12] & 0x40)
1911 * else
1912 * goto unknown_command */
1913 bt_hci_event_complete_read_inquiry_mode(hci);
1914 break;
1915
1916 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_INQUIRY_MODE):
1917 /* Only if (local_features[3] & 0x40) && (local_commands[12] & 0x80)
1918 * else
1919 * goto unknown_command */
1920 LENGTH_CHECK(write_inquiry_mode);
1921
1922 if (PARAM(write_inquiry_mode, mode) > 0x01) {
1923 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1924 break;
1925 }
1926
1927 hci->lm.inquiry_mode = PARAM(write_inquiry_mode, mode);
1928 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1929 break;
1930
1931 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_LOCAL_VERSION):
1932 bt_hci_read_local_version_rp(hci);
1933 break;
1934
1935 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_LOCAL_COMMANDS):
1936 bt_hci_read_local_commands_rp(hci);
1937 break;
1938
1939 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_LOCAL_FEATURES):
1940 bt_hci_read_local_features_rp(hci);
1941 break;
1942
1943 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_LOCAL_EXT_FEATURES):
1944 LENGTH_CHECK(read_local_ext_features);
1945
1946 bt_hci_read_local_ext_features_rp(hci,
1947 PARAM(read_local_ext_features, page_num));
1948 break;
1949
1950 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_BUFFER_SIZE):
1951 bt_hci_read_buffer_size_rp(hci);
1952 break;
1953
1954 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_COUNTRY_CODE):
1955 bt_hci_read_country_code_rp(hci);
1956 break;
1957
1958 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_BD_ADDR):
1959 bt_hci_read_bd_addr_rp(hci);
1960 break;
1961
1962 case cmd_opcode_pack(OGF_STATUS_PARAM, OCF_READ_LINK_QUALITY):
1963 LENGTH_CHECK(read_link_quality);
1964
1965 bt_hci_link_quality_rp(hci, PARAMHANDLE(read_link_quality));
1966 break;
1967
1968 default:
1969 bt_hci_event_status(hci, HCI_UNKNOWN_COMMAND);
1970 break;
1971
1972 short_hci:
1973 fprintf(stderr, "%s: HCI packet too short (%iB)\n",
1974 __FUNCTION__, length);
1975 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1976 break;
1977 }
1978 }
1979
1980 /* We could perform fragmentation here, we can't do "recombination" because
1981 * at this layer the length of the payload is not know ahead, so we only
1982 * know that a packet contained the last fragment of the SDU when the next
1983 * SDU starts. */
1984 static inline void bt_hci_lmp_acl_data(struct bt_hci_s *hci, uint16_t handle,
1985 const uint8_t *data, int start, int len)
1986 {
1987 struct hci_acl_hdr *pkt = (void *) hci->acl_buf;
1988
1989 /* TODO: packet flags */
1990 /* TODO: avoid memcpy'ing */
1991
1992 if (len + HCI_ACL_HDR_SIZE > sizeof(hci->acl_buf)) {
1993 fprintf(stderr, "%s: can't take ACL packets %i bytes long\n",
1994 __FUNCTION__, len);
1995 return;
1996 }
1997 memcpy(hci->acl_buf + HCI_ACL_HDR_SIZE, data, len);
1998
1999 pkt->handle = cpu_to_le16(
2000 acl_handle_pack(handle, start ? ACL_START : ACL_CONT));
2001 pkt->dlen = cpu_to_le16(len);
2002 hci->info.acl_recv(hci->info.opaque,
2003 hci->acl_buf, len + HCI_ACL_HDR_SIZE);
2004 }
2005
2006 static void bt_hci_lmp_acl_data_slave(struct bt_link_s *btlink,
2007 const uint8_t *data, int start, int len)
2008 {
2009 struct bt_hci_link_s *link = (struct bt_hci_link_s *) btlink;
2010
2011 bt_hci_lmp_acl_data(hci_from_device(btlink->slave),
2012 link->handle, data, start, len);
2013 }
2014
2015 static void bt_hci_lmp_acl_data_host(struct bt_link_s *link,
2016 const uint8_t *data, int start, int len)
2017 {
2018 bt_hci_lmp_acl_data(hci_from_device(link->host),
2019 link->handle, data, start, len);
2020 }
2021
2022 static void bt_submit_acl(struct HCIInfo *info,
2023 const uint8_t *data, int length)
2024 {
2025 struct bt_hci_s *hci = hci_from_info(info);
2026 uint16_t handle;
2027 int datalen, flags;
2028 struct bt_link_s *link;
2029
2030 if (length < HCI_ACL_HDR_SIZE) {
2031 fprintf(stderr, "%s: ACL packet too short (%iB)\n",
2032 __FUNCTION__, length);
2033 return;
2034 }
2035
2036 handle = acl_handle((data[1] << 8) | data[0]);
2037 flags = acl_flags((data[1] << 8) | data[0]);
2038 datalen = (data[3] << 8) | data[2];
2039 data += HCI_ACL_HDR_SIZE;
2040 length -= HCI_ACL_HDR_SIZE;
2041
2042 if (bt_hci_handle_bad(hci, handle)) {
2043 fprintf(stderr, "%s: invalid ACL handle %03x\n",
2044 __FUNCTION__, handle);
2045 /* TODO: signal an error */
2046 return;
2047 }
2048 handle &= ~HCI_HANDLE_OFFSET;
2049
2050 if (datalen > length) {
2051 fprintf(stderr, "%s: ACL packet too short (%iB < %iB)\n",
2052 __FUNCTION__, length, datalen);
2053 return;
2054 }
2055
2056 link = hci->lm.handle[handle].link;
2057
2058 if ((flags & ~3) == ACL_ACTIVE_BCAST) {
2059 if (!hci->asb_handle)
2060 hci->asb_handle = handle;
2061 else if (handle != hci->asb_handle) {
2062 fprintf(stderr, "%s: Bad handle %03x in Active Slave Broadcast\n",
2063 __FUNCTION__, handle);
2064 /* TODO: signal an error */
2065 return;
2066 }
2067
2068 /* TODO */
2069 }
2070
2071 if ((flags & ~3) == ACL_PICO_BCAST) {
2072 if (!hci->psb_handle)
2073 hci->psb_handle = handle;
2074 else if (handle != hci->psb_handle) {
2075 fprintf(stderr, "%s: Bad handle %03x in Parked Slave Broadcast\n",
2076 __FUNCTION__, handle);
2077 /* TODO: signal an error */
2078 return;
2079 }
2080
2081 /* TODO */
2082 }
2083
2084 /* TODO: increase counter and send EVT_NUM_COMP_PKTS */
2085 bt_hci_event_num_comp_pkts(hci, handle | HCI_HANDLE_OFFSET, 1);
2086
2087 /* Do this last as it can trigger further events even in this HCI */
2088 hci->lm.handle[handle].lmp_acl_data(link, data,
2089 (flags & 3) == ACL_START, length);
2090 }
2091
2092 static void bt_submit_sco(struct HCIInfo *info,
2093 const uint8_t *data, int length)
2094 {
2095 struct bt_hci_s *hci = hci_from_info(info);
2096 uint16_t handle;
2097 int datalen;
2098
2099 if (length < 3)
2100 return;
2101
2102 handle = acl_handle((data[1] << 8) | data[0]);
2103 datalen = data[2];
2104 length -= 3;
2105
2106 if (bt_hci_handle_bad(hci, handle)) {
2107 fprintf(stderr, "%s: invalid SCO handle %03x\n",
2108 __FUNCTION__, handle);
2109 return;
2110 }
2111
2112 if (datalen > length) {
2113 fprintf(stderr, "%s: SCO packet too short (%iB < %iB)\n",
2114 __FUNCTION__, length, datalen);
2115 return;
2116 }
2117
2118 /* TODO */
2119
2120 /* TODO: increase counter and send EVT_NUM_COMP_PKTS if synchronous
2121 * Flow Control is enabled.
2122 * (See Read/Write_Synchronous_Flow_Control_Enable on page 513 and
2123 * page 514.) */
2124 }
2125
2126 static uint8_t *bt_hci_evt_packet(void *opaque)
2127 {
2128 /* TODO: allocate a packet from upper layer */
2129 struct bt_hci_s *s = opaque;
2130
2131 return s->evt_buf;
2132 }
2133
2134 static void bt_hci_evt_submit(void *opaque, int len)
2135 {
2136 /* TODO: notify upper layer */
2137 struct bt_hci_s *s = opaque;
2138
2139 s->info.evt_recv(s->info.opaque, s->evt_buf, len);
2140 }
2141
2142 static int bt_hci_bdaddr_set(struct HCIInfo *info, const uint8_t *bd_addr)
2143 {
2144 struct bt_hci_s *hci = hci_from_info(info);
2145
2146 bacpy(&hci->device.bd_addr, (const bdaddr_t *) bd_addr);
2147 return 0;
2148 }
2149
2150 static void bt_hci_done(struct HCIInfo *info);
2151 static void bt_hci_destroy(struct bt_device_s *dev)
2152 {
2153 struct bt_hci_s *hci = hci_from_device(dev);
2154
2155 bt_hci_done(&hci->info);
2156 }
2157
2158 struct HCIInfo *bt_new_hci(struct bt_scatternet_s *net)
2159 {
2160 struct bt_hci_s *s = g_malloc0(sizeof(struct bt_hci_s));
2161
2162 s->lm.inquiry_done = timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_inquiry_done, s);
2163 s->lm.inquiry_next = timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_inquiry_next, s);
2164 s->conn_accept_timer =
2165 timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_conn_accept_timeout, s);
2166
2167 s->evt_packet = bt_hci_evt_packet;
2168 s->evt_submit = bt_hci_evt_submit;
2169 s->opaque = s;
2170
2171 bt_device_init(&s->device, net);
2172 s->device.lmp_connection_request = bt_hci_lmp_connection_request;
2173 s->device.lmp_connection_complete = bt_hci_lmp_connection_complete;
2174 s->device.lmp_disconnect_master = bt_hci_lmp_disconnect_host;
2175 s->device.lmp_disconnect_slave = bt_hci_lmp_disconnect_slave;
2176 s->device.lmp_acl_data = bt_hci_lmp_acl_data_slave;
2177 s->device.lmp_acl_resp = bt_hci_lmp_acl_data_host;
2178 s->device.lmp_mode_change = bt_hci_lmp_mode_change_slave;
2179
2180 /* Keep updated! */
2181 /* Also keep in sync with supported commands bitmask in
2182 * bt_hci_read_local_commands_rp */
2183 s->device.lmp_caps = 0x8000199b7e85355fll;
2184
2185 bt_hci_reset(s);
2186
2187 s->info.cmd_send = bt_submit_hci;
2188 s->info.sco_send = bt_submit_sco;
2189 s->info.acl_send = bt_submit_acl;
2190 s->info.bdaddr_set = bt_hci_bdaddr_set;
2191
2192 s->device.handle_destroy = bt_hci_destroy;
2193
2194 return &s->info;
2195 }
2196
2197 struct HCIInfo *hci_init(const char *str)
2198 {
2199 char *endp;
2200 struct bt_scatternet_s *vlan = 0;
2201
2202 if (!strcmp(str, "null"))
2203 /* null */
2204 return &null_hci;
2205 else if (!strncmp(str, "host", 4) && (str[4] == '\0' || str[4] == ':'))
2206 /* host[:hciN] */
2207 return bt_host_hci(str[4] ? str + 5 : "hci0");
2208 else if (!strncmp(str, "hci", 3)) {
2209 /* hci[,vlan=n] */
2210 if (str[3]) {
2211 if (!strncmp(str + 3, ",vlan=", 6)) {
2212 vlan = qemu_find_bt_vlan(strtol(str + 9, &endp, 0));
2213 if (*endp)
2214 vlan = 0;
2215 }
2216 } else
2217 vlan = qemu_find_bt_vlan(0);
2218 if (vlan)
2219 return bt_new_hci(vlan);
2220 }
2221
2222 fprintf(stderr, "qemu: Unknown bluetooth HCI `%s'.\n", str);
2223
2224 return 0;
2225 }
2226
2227 static void bt_hci_done(struct HCIInfo *info)
2228 {
2229 struct bt_hci_s *hci = hci_from_info(info);
2230 int handle;
2231
2232 bt_device_done(&hci->device);
2233
2234 if (hci->device.lmp_name)
2235 g_free((void *) hci->device.lmp_name);
2236
2237 /* Be gentle and send DISCONNECT to all connected peers and those
2238 * currently waiting for us to accept or reject a connection request.
2239 * This frees the links. */
2240 if (hci->conn_req_host) {
2241 bt_hci_connection_reject(hci,
2242 hci->conn_req_host, HCI_OE_POWER_OFF);
2243 return;
2244 }
2245
2246 for (handle = HCI_HANDLE_OFFSET;
2247 handle < (HCI_HANDLE_OFFSET | HCI_HANDLES_MAX); handle ++)
2248 if (!bt_hci_handle_bad(hci, handle))
2249 bt_hci_disconnect(hci, handle, HCI_OE_POWER_OFF);
2250
2251 /* TODO: this is not enough actually, there may be slaves from whom
2252 * we have requested a connection who will soon (or not) respond with
2253 * an accept or a reject, so we should also check if hci->lm.connecting
2254 * is non-zero and if so, avoid freeing the hci but otherwise disappear
2255 * from all qemu social life (e.g. stop scanning and request to be
2256 * removed from s->device.net) and arrange for
2257 * s->device.lmp_connection_complete to free the remaining bits once
2258 * hci->lm.awaiting_bdaddr[] is empty. */
2259
2260 timer_free(hci->lm.inquiry_done);
2261 timer_free(hci->lm.inquiry_next);
2262 timer_free(hci->conn_accept_timer);
2263
2264 g_free(hci);
2265 }
QEmu