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ppc/xics: An ICS with offset 0 is assumed to be uninitialized
[qemu/kevin.git] / hw / bt / hci.c
blob476ebec0ab33fba45cb1167f51b8a32345c672c8
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/osdep.h"
22 #include "qapi/error.h"
23 #include "qemu-common.h"
24 #include "qemu/timer.h"
25 #include "hw/usb.h"
26 #include "sysemu/bt.h"
27 #include "hw/bt.h"
28 #include "qapi/qmp/qerror.h"
29 #include "sysemu/replay.h"
30 #include "qemu/cutils.h"
31
32 struct bt_hci_s {
33 uint8_t *(*evt_packet)(void *opaque);
34 void (*evt_submit)(void *opaque, int len);
35 void *opaque;
36 uint8_t evt_buf[256];
37
38 uint8_t acl_buf[4096];
39 int acl_len;
40
41 uint16_t asb_handle;
42 uint16_t psb_handle;
43
44 int last_cmd; /* Note: Always little-endian */
45
46 struct bt_device_s *conn_req_host;
47
48 struct {
49 int inquire;
50 int periodic;
51 int responses_left;
52 int responses;
53 QEMUTimer *inquiry_done;
54 QEMUTimer *inquiry_next;
55 int inquiry_length;
56 int inquiry_period;
57 int inquiry_mode;
58
59 #define HCI_HANDLE_OFFSET 0x20
60 #define HCI_HANDLES_MAX 0x10
61 struct bt_hci_master_link_s {
62 struct bt_link_s *link;
63 void (*lmp_acl_data)(struct bt_link_s *link,
64 const uint8_t *data, int start, int len);
65 QEMUTimer *acl_mode_timer;
66 } handle[HCI_HANDLES_MAX];
67 uint32_t role_bmp;
68 int last_handle;
69 int connecting;
70 bdaddr_t awaiting_bdaddr[HCI_HANDLES_MAX];
71 } lm;
72
73 uint8_t event_mask[8];
74 uint16_t voice_setting; /* Notw: Always little-endian */
75 uint16_t conn_accept_tout;
76 QEMUTimer *conn_accept_timer;
77
78 struct HCIInfo info;
79 struct bt_device_s device;
80
81 Error *replay_blocker;
82 };
83
84 #define DEFAULT_RSSI_DBM 20
85
86 #define hci_from_info(ptr) container_of((ptr), struct bt_hci_s, info)
87 #define hci_from_device(ptr) container_of((ptr), struct bt_hci_s, device)
88
89 struct bt_hci_link_s {
90 struct bt_link_s btlink;
91 uint16_t handle; /* Local */
92 };
93
94 /* LMP layer emulation */
95 #if 0
96 static void bt_submit_lmp(struct bt_device_s *bt, int length, uint8_t *data)
97 {
98 int resp, resplen, error, op, tr;
99 uint8_t respdata[17];
100
101 if (length < 1)
102 return;
103
104 tr = *data & 1;
105 op = *(data ++) >> 1;
106 resp = LMP_ACCEPTED;
107 resplen = 2;
108 respdata[1] = op;
109 error = 0;
110 length --;
111
112 if (op >= 0x7c) { /* Extended opcode */
113 op |= *(data ++) << 8;
114 resp = LMP_ACCEPTED_EXT;
115 resplen = 4;
116 respdata[0] = op >> 8;
117 respdata[1] = op & 0xff;
118 length --;
119 }
120
121 switch (op) {
122 case LMP_ACCEPTED:
123 /* data[0] Op code
124 */
125 if (length < 1) {
126 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
127 goto not_accepted;
128 }
129 resp = 0;
130 break;
131
132 case LMP_ACCEPTED_EXT:
133 /* data[0] Escape op code
134 * data[1] Extended op code
135 */
136 if (length < 2) {
137 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
138 goto not_accepted;
139 }
140 resp = 0;
141 break;
142
143 case LMP_NOT_ACCEPTED:
144 /* data[0] Op code
145 * data[1] Error code
146 */
147 if (length < 2) {
148 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
149 goto not_accepted;
150 }
151 resp = 0;
152 break;
153
154 case LMP_NOT_ACCEPTED_EXT:
155 /* data[0] Op code
156 * data[1] Extended op code
157 * data[2] Error code
158 */
159 if (length < 3) {
160 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
161 goto not_accepted;
162 }
163 resp = 0;
164 break;
165
166 case LMP_HOST_CONNECTION_REQ:
167 break;
168
169 case LMP_SETUP_COMPLETE:
170 resp = LMP_SETUP_COMPLETE;
171 resplen = 1;
172 bt->setup = 1;
173 break;
174
175 case LMP_DETACH:
176 /* data[0] Error code
177 */
178 if (length < 1) {
179 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
180 goto not_accepted;
181 }
182 bt->setup = 0;
183 resp = 0;
184 break;
185
186 case LMP_SUPERVISION_TIMEOUT:
187 /* data[0,1] Supervision timeout
188 */
189 if (length < 2) {
190 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
191 goto not_accepted;
192 }
193 resp = 0;
194 break;
195
196 case LMP_QUALITY_OF_SERVICE:
197 resp = 0;
198 /* Fall through */
199 case LMP_QOS_REQ:
200 /* data[0,1] Poll interval
201 * data[2] N(BC)
202 */
203 if (length < 3) {
204 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
205 goto not_accepted;
206 }
207 break;
208
209 case LMP_MAX_SLOT:
210 resp = 0;
211 /* Fall through */
212 case LMP_MAX_SLOT_REQ:
213 /* data[0] Max slots
214 */
215 if (length < 1) {
216 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
217 goto not_accepted;
218 }
219 break;
220
221 case LMP_AU_RAND:
222 case LMP_IN_RAND:
223 case LMP_COMB_KEY:
224 /* data[0-15] Random number
225 */
226 if (length < 16) {
227 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
228 goto not_accepted;
229 }
230 if (op == LMP_AU_RAND) {
231 if (bt->key_present) {
232 resp = LMP_SRES;
233 resplen = 5;
234 /* XXX: [Part H] Section 6.1 on page 801 */
235 } else {
236 error = HCI_PIN_OR_KEY_MISSING;
237 goto not_accepted;
238 }
239 } else if (op == LMP_IN_RAND) {
240 error = HCI_PAIRING_NOT_ALLOWED;
241 goto not_accepted;
242 } else {
243 /* XXX: [Part H] Section 3.2 on page 779 */
244 resp = LMP_UNIT_KEY;
245 resplen = 17;
246 memcpy(respdata + 1, bt->key, 16);
247
248 error = HCI_UNIT_LINK_KEY_USED;
249 goto not_accepted;
250 }
251 break;
252
253 case LMP_UNIT_KEY:
254 /* data[0-15] Key
255 */
256 if (length < 16) {
257 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
258 goto not_accepted;
259 }
260 memcpy(bt->key, data, 16);
261 bt->key_present = 1;
262 break;
263
264 case LMP_SRES:
265 /* data[0-3] Authentication response
266 */
267 if (length < 4) {
268 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
269 goto not_accepted;
270 }
271 break;
272
273 case LMP_CLKOFFSET_REQ:
274 resp = LMP_CLKOFFSET_RES;
275 resplen = 3;
276 respdata[1] = 0x33;
277 respdata[2] = 0x33;
278 break;
279
280 case LMP_CLKOFFSET_RES:
281 /* data[0,1] Clock offset
282 * (Slave to master only)
283 */
284 if (length < 2) {
285 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
286 goto not_accepted;
287 }
288 break;
289
290 case LMP_VERSION_REQ:
291 case LMP_VERSION_RES:
292 /* data[0] VersNr
293 * data[1,2] CompId
294 * data[3,4] SubVersNr
295 */
296 if (length < 5) {
297 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
298 goto not_accepted;
299 }
300 if (op == LMP_VERSION_REQ) {
301 resp = LMP_VERSION_RES;
302 resplen = 6;
303 respdata[1] = 0x20;
304 respdata[2] = 0xff;
305 respdata[3] = 0xff;
306 respdata[4] = 0xff;
307 respdata[5] = 0xff;
308 } else
309 resp = 0;
310 break;
311
312 case LMP_FEATURES_REQ:
313 case LMP_FEATURES_RES:
314 /* data[0-7] Features
315 */
316 if (length < 8) {
317 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
318 goto not_accepted;
319 }
320 if (op == LMP_FEATURES_REQ) {
321 resp = LMP_FEATURES_RES;
322 resplen = 9;
323 respdata[1] = (bt->lmp_caps >> 0) & 0xff;
324 respdata[2] = (bt->lmp_caps >> 8) & 0xff;
325 respdata[3] = (bt->lmp_caps >> 16) & 0xff;
326 respdata[4] = (bt->lmp_caps >> 24) & 0xff;
327 respdata[5] = (bt->lmp_caps >> 32) & 0xff;
328 respdata[6] = (bt->lmp_caps >> 40) & 0xff;
329 respdata[7] = (bt->lmp_caps >> 48) & 0xff;
330 respdata[8] = (bt->lmp_caps >> 56) & 0xff;
331 } else
332 resp = 0;
333 break;
334
335 case LMP_NAME_REQ:
336 /* data[0] Name offset
337 */
338 if (length < 1) {
339 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
340 goto not_accepted;
341 }
342 resp = LMP_NAME_RES;
343 resplen = 17;
344 respdata[1] = data[0];
345 respdata[2] = strlen(bt->lmp_name);
346 memset(respdata + 3, 0x00, 14);
347 if (respdata[2] > respdata[1])
348 memcpy(respdata + 3, bt->lmp_name + respdata[1],
349 respdata[2] - respdata[1]);
350 break;
351
352 case LMP_NAME_RES:
353 /* data[0] Name offset
354 * data[1] Name length
355 * data[2-15] Name fragment
356 */
357 if (length < 16) {
358 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
359 goto not_accepted;
360 }
361 resp = 0;
362 break;
363
364 default:
365 error = HCI_UNKNOWN_LMP_PDU;
366 /* Fall through */
367 not_accepted:
368 if (op >> 8) {
369 resp = LMP_NOT_ACCEPTED_EXT;
370 resplen = 5;
371 respdata[0] = op >> 8;
372 respdata[1] = op & 0xff;
373 respdata[2] = error;
374 } else {
375 resp = LMP_NOT_ACCEPTED;
376 resplen = 3;
377 respdata[0] = op & 0xff;
378 respdata[1] = error;
379 }
380 }
381
382 if (resp == 0)
383 return;
384
385 if (resp >> 8) {
386 respdata[0] = resp >> 8;
387 respdata[1] = resp & 0xff;
388 } else
389 respdata[0] = resp & 0xff;
390
391 respdata[0] <<= 1;
392 respdata[0] |= tr;
393 }
394
395 static void bt_submit_raw_acl(struct bt_piconet_s *net, int length, uint8_t *data)
396 {
397 struct bt_device_s *slave;
398 if (length < 1)
399 return;
400
401 slave = 0;
402 #if 0
403 slave = net->slave;
404 #endif
405
406 switch (data[0] & 3) {
407 case LLID_ACLC:
408 bt_submit_lmp(slave, length - 1, data + 1);
409 break;
410 case LLID_ACLU_START:
411 #if 0
412 bt_sumbit_l2cap(slave, length - 1, data + 1, (data[0] >> 2) & 1);
413 breka;
414 #endif
415 default:
416 case LLID_ACLU_CONT:
417 break;
418 }
419 }
420 #endif
421
422 /* HCI layer emulation */
423
424 /* Note: we could ignore endianness because unswapped handles will still
425 * be valid as connection identifiers for the guest - they don't have to
426 * be continuously allocated. We do it though, to preserve similar
427 * behaviour between hosts. Some things, like the BD_ADDR cannot be
428 * preserved though (for example if a real hci is used). */
429 #define HNDL(raw) cpu_to_le16(raw)
430
431 static const uint8_t bt_event_reserved_mask[8] = {
432 0xff, 0x9f, 0xfb, 0xff, 0x07, 0x18, 0x00, 0x00,
433 };
434
435
436 static void null_hci_send(struct HCIInfo *hci, const uint8_t *data, int len)
437 {
438 }
439
440 static int null_hci_addr_set(struct HCIInfo *hci, const uint8_t *bd_addr)
441 {
442 return -ENOTSUP;
443 }
444
445 struct HCIInfo null_hci = {
446 .cmd_send = null_hci_send,
447 .sco_send = null_hci_send,
448 .acl_send = null_hci_send,
449 .bdaddr_set = null_hci_addr_set,
450 };
451
452
453 static inline uint8_t *bt_hci_event_start(struct bt_hci_s *hci,
454 int evt, int len)
455 {
456 uint8_t *packet, mask;
457 int mask_byte;
458
459 if (len > 255) {
460 fprintf(stderr, "%s: HCI event params too long (%ib)\n",
461 __FUNCTION__, len);
462 exit(-1);
463 }
464
465 mask_byte = (evt - 1) >> 3;
466 mask = 1 << ((evt - 1) & 3);
467 if (mask & bt_event_reserved_mask[mask_byte] & ~hci->event_mask[mask_byte])
468 return NULL;
469
470 packet = hci->evt_packet(hci->opaque);
471 packet[0] = evt;
472 packet[1] = len;
473
474 return &packet[2];
475 }
476
477 static inline void bt_hci_event(struct bt_hci_s *hci, int evt,
478 void *params, int len)
479 {
480 uint8_t *packet = bt_hci_event_start(hci, evt, len);
481
482 if (!packet)
483 return;
484
485 if (len)
486 memcpy(packet, params, len);
487
488 hci->evt_submit(hci->opaque, len + 2);
489 }
490
491 static inline void bt_hci_event_status(struct bt_hci_s *hci, int status)
492 {
493 evt_cmd_status params = {
494 .status = status,
495 .ncmd = 1,
496 .opcode = hci->last_cmd,
497 };
498
499 bt_hci_event(hci, EVT_CMD_STATUS, &params, EVT_CMD_STATUS_SIZE);
500 }
501
502 static inline void bt_hci_event_complete(struct bt_hci_s *hci,
503 void *ret, int len)
504 {
505 uint8_t *packet = bt_hci_event_start(hci, EVT_CMD_COMPLETE,
506 len + EVT_CMD_COMPLETE_SIZE);
507 evt_cmd_complete *params = (evt_cmd_complete *) packet;
508
509 if (!packet)
510 return;
511
512 params->ncmd = 1;
513 params->opcode = hci->last_cmd;
514 if (len)
515 memcpy(&packet[EVT_CMD_COMPLETE_SIZE], ret, len);
516
517 hci->evt_submit(hci->opaque, len + EVT_CMD_COMPLETE_SIZE + 2);
518 }
519
520 static void bt_hci_inquiry_done(void *opaque)
521 {
522 struct bt_hci_s *hci = (struct bt_hci_s *) opaque;
523 uint8_t status = HCI_SUCCESS;
524
525 if (!hci->lm.periodic)
526 hci->lm.inquire = 0;
527
528 /* The specification is inconsistent about this one. Page 565 reads
529 * "The event parameters of Inquiry Complete event will have a summary
530 * of the result from the Inquiry process, which reports the number of
531 * nearby Bluetooth devices that responded [so hci->responses].", but
532 * Event Parameters (see page 729) has only Status. */
533 bt_hci_event(hci, EVT_INQUIRY_COMPLETE, &status, 1);
534 }
535
536 static void bt_hci_inquiry_result_standard(struct bt_hci_s *hci,
537 struct bt_device_s *slave)
538 {
539 inquiry_info params = {
540 .num_responses = 1,
541 .bdaddr = BAINIT(&slave->bd_addr),
542 .pscan_rep_mode = 0x00, /* R0 */
543 .pscan_period_mode = 0x00, /* P0 - deprecated */
544 .pscan_mode = 0x00, /* Standard scan - deprecated */
545 .dev_class[0] = slave->class[0],
546 .dev_class[1] = slave->class[1],
547 .dev_class[2] = slave->class[2],
548 /* TODO: return the clkoff *differenece* */
549 .clock_offset = slave->clkoff, /* Note: no swapping */
550 };
551
552 bt_hci_event(hci, EVT_INQUIRY_RESULT, &params, INQUIRY_INFO_SIZE);
553 }
554
555 static void bt_hci_inquiry_result_with_rssi(struct bt_hci_s *hci,
556 struct bt_device_s *slave)
557 {
558 inquiry_info_with_rssi params = {
559 .num_responses = 1,
560 .bdaddr = BAINIT(&slave->bd_addr),
561 .pscan_rep_mode = 0x00, /* R0 */
562 .pscan_period_mode = 0x00, /* P0 - deprecated */
563 .dev_class[0] = slave->class[0],
564 .dev_class[1] = slave->class[1],
565 .dev_class[2] = slave->class[2],
566 /* TODO: return the clkoff *differenece* */
567 .clock_offset = slave->clkoff, /* Note: no swapping */
568 .rssi = DEFAULT_RSSI_DBM,
569 };
570
571 bt_hci_event(hci, EVT_INQUIRY_RESULT_WITH_RSSI,
572 &params, INQUIRY_INFO_WITH_RSSI_SIZE);
573 }
574
575 static void bt_hci_inquiry_result(struct bt_hci_s *hci,
576 struct bt_device_s *slave)
577 {
578 if (!slave->inquiry_scan || !hci->lm.responses_left)
579 return;
580
581 hci->lm.responses_left --;
582 hci->lm.responses ++;
583
584 switch (hci->lm.inquiry_mode) {
585 case 0x00:
586 bt_hci_inquiry_result_standard(hci, slave);
587 return;
588 case 0x01:
589 bt_hci_inquiry_result_with_rssi(hci, slave);
590 return;
591 default:
592 fprintf(stderr, "%s: bad inquiry mode %02x\n", __FUNCTION__,
593 hci->lm.inquiry_mode);
594 exit(-1);
595 }
596 }
597
598 static void bt_hci_mod_timer_1280ms(QEMUTimer *timer, int period)
599 {
600 timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
601 (uint64_t)(period << 7) * 10000000);
602 }
603
604 static void bt_hci_inquiry_start(struct bt_hci_s *hci, int length)
605 {
606 struct bt_device_s *slave;
607
608 hci->lm.inquiry_length = length;
609 for (slave = hci->device.net->slave; slave; slave = slave->next)
610 /* Don't uncover ourselves. */
611 if (slave != &hci->device)
612 bt_hci_inquiry_result(hci, slave);
613
614 /* TODO: register for a callback on a new device's addition to the
615 * scatternet so that if it's added before inquiry_length expires,
616 * an Inquiry Result is generated immediately. Alternatively re-loop
617 * through the devices on the inquiry_length expiration and report
618 * devices not seen before. */
619 if (hci->lm.responses_left)
620 bt_hci_mod_timer_1280ms(hci->lm.inquiry_done, hci->lm.inquiry_length);
621 else
622 bt_hci_inquiry_done(hci);
623
624 if (hci->lm.periodic)
625 bt_hci_mod_timer_1280ms(hci->lm.inquiry_next, hci->lm.inquiry_period);
626 }
627
628 static void bt_hci_inquiry_next(void *opaque)
629 {
630 struct bt_hci_s *hci = (struct bt_hci_s *) opaque;
631
632 hci->lm.responses_left += hci->lm.responses;
633 hci->lm.responses = 0;
634 bt_hci_inquiry_start(hci, hci->lm.inquiry_length);
635 }
636
637 static inline int bt_hci_handle_bad(struct bt_hci_s *hci, uint16_t handle)
638 {
639 return !(handle & HCI_HANDLE_OFFSET) ||
640 handle >= (HCI_HANDLE_OFFSET | HCI_HANDLES_MAX) ||
641 !hci->lm.handle[handle & ~HCI_HANDLE_OFFSET].link;
642 }
643
644 static inline int bt_hci_role_master(struct bt_hci_s *hci, uint16_t handle)
645 {
646 return !!(hci->lm.role_bmp & (1 << (handle & ~HCI_HANDLE_OFFSET)));
647 }
648
649 static inline struct bt_device_s *bt_hci_remote_dev(struct bt_hci_s *hci,
650 uint16_t handle)
651 {
652 struct bt_link_s *link = hci->lm.handle[handle & ~HCI_HANDLE_OFFSET].link;
653
654 return bt_hci_role_master(hci, handle) ? link->slave : link->host;
655 }
656
657 static void bt_hci_mode_tick(void *opaque);
658 static void bt_hci_lmp_link_establish(struct bt_hci_s *hci,
659 struct bt_link_s *link, int master)
660 {
661 hci->lm.handle[hci->lm.last_handle].link = link;
662
663 if (master) {
664 /* We are the master side of an ACL link */
665 hci->lm.role_bmp |= 1 << hci->lm.last_handle;
666
667 hci->lm.handle[hci->lm.last_handle].lmp_acl_data =
668 link->slave->lmp_acl_data;
669 } else {
670 /* We are the slave side of an ACL link */
671 hci->lm.role_bmp &= ~(1 << hci->lm.last_handle);
672
673 hci->lm.handle[hci->lm.last_handle].lmp_acl_data =
674 link->host->lmp_acl_resp;
675 }
676
677 /* Mode */
678 if (master) {
679 link->acl_mode = acl_active;
680 hci->lm.handle[hci->lm.last_handle].acl_mode_timer =
681 timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_mode_tick, link);
682 }
683 }
684
685 static void bt_hci_lmp_link_teardown(struct bt_hci_s *hci, uint16_t handle)
686 {
687 handle &= ~HCI_HANDLE_OFFSET;
688 hci->lm.handle[handle].link = NULL;
689
690 if (bt_hci_role_master(hci, handle)) {
691 timer_del(hci->lm.handle[handle].acl_mode_timer);
692 timer_free(hci->lm.handle[handle].acl_mode_timer);
693 }
694 }
695
696 static int bt_hci_connect(struct bt_hci_s *hci, bdaddr_t *bdaddr)
697 {
698 struct bt_device_s *slave;
699 struct bt_link_s link;
700
701 for (slave = hci->device.net->slave; slave; slave = slave->next)
702 if (slave->page_scan && !bacmp(&slave->bd_addr, bdaddr))
703 break;
704 if (!slave || slave == &hci->device)
705 return -ENODEV;
706
707 bacpy(&hci->lm.awaiting_bdaddr[hci->lm.connecting ++], &slave->bd_addr);
708
709 link.slave = slave;
710 link.host = &hci->device;
711 link.slave->lmp_connection_request(&link); /* Always last */
712
713 return 0;
714 }
715
716 static void bt_hci_connection_reject(struct bt_hci_s *hci,
717 struct bt_device_s *host, uint8_t because)
718 {
719 struct bt_link_s link = {
720 .slave = &hci->device,
721 .host = host,
722 /* Rest uninitialised */
723 };
724
725 host->reject_reason = because;
726 host->lmp_connection_complete(&link);
727 }
728
729 static void bt_hci_connection_reject_event(struct bt_hci_s *hci,
730 bdaddr_t *bdaddr)
731 {
732 evt_conn_complete params;
733
734 params.status = HCI_NO_CONNECTION;
735 params.handle = 0;
736 bacpy(&params.bdaddr, bdaddr);
737 params.link_type = ACL_LINK;
738 params.encr_mode = 0x00; /* Encryption not required */
739 bt_hci_event(hci, EVT_CONN_COMPLETE, &params, EVT_CONN_COMPLETE_SIZE);
740 }
741
742 static void bt_hci_connection_accept(struct bt_hci_s *hci,
743 struct bt_device_s *host)
744 {
745 struct bt_hci_link_s *link = g_malloc0(sizeof(struct bt_hci_link_s));
746 evt_conn_complete params;
747 uint16_t handle;
748 uint8_t status = HCI_SUCCESS;
749 int tries = HCI_HANDLES_MAX;
750
751 /* Make a connection handle */
752 do {
753 while (hci->lm.handle[++ hci->lm.last_handle].link && -- tries)
754 hci->lm.last_handle &= HCI_HANDLES_MAX - 1;
755 handle = hci->lm.last_handle | HCI_HANDLE_OFFSET;
756 } while ((handle == hci->asb_handle || handle == hci->psb_handle) &&
757 tries);
758
759 if (!tries) {
760 g_free(link);
761 bt_hci_connection_reject(hci, host, HCI_REJECTED_LIMITED_RESOURCES);
762 status = HCI_NO_CONNECTION;
763 goto complete;
764 }
765
766 link->btlink.slave = &hci->device;
767 link->btlink.host = host;
768 link->handle = handle;
769
770 /* Link established */
771 bt_hci_lmp_link_establish(hci, &link->btlink, 0);
772
773 complete:
774 params.status = status;
775 params.handle = HNDL(handle);
776 bacpy(&params.bdaddr, &host->bd_addr);
777 params.link_type = ACL_LINK;
778 params.encr_mode = 0x00; /* Encryption not required */
779 bt_hci_event(hci, EVT_CONN_COMPLETE, &params, EVT_CONN_COMPLETE_SIZE);
780
781 /* Neets to be done at the very end because it can trigger a (nested)
782 * disconnected, in case the other and had cancelled the request
783 * locally. */
784 if (status == HCI_SUCCESS) {
785 host->reject_reason = 0;
786 host->lmp_connection_complete(&link->btlink);
787 }
788 }
789
790 static void bt_hci_lmp_connection_request(struct bt_link_s *link)
791 {
792 struct bt_hci_s *hci = hci_from_device(link->slave);
793 evt_conn_request params;
794
795 if (hci->conn_req_host) {
796 bt_hci_connection_reject(hci, link->host,
797 HCI_REJECTED_LIMITED_RESOURCES);
798 return;
799 }
800 hci->conn_req_host = link->host;
801 /* TODO: if masked and auto-accept, then auto-accept,
802 * if masked and not auto-accept, then auto-reject */
803 /* TODO: kick the hci->conn_accept_timer, timeout after
804 * hci->conn_accept_tout * 0.625 msec */
805
806 bacpy(&params.bdaddr, &link->host->bd_addr);
807 memcpy(&params.dev_class, &link->host->class, sizeof(params.dev_class));
808 params.link_type = ACL_LINK;
809 bt_hci_event(hci, EVT_CONN_REQUEST, &params, EVT_CONN_REQUEST_SIZE);
810 }
811
812 static void bt_hci_conn_accept_timeout(void *opaque)
813 {
814 struct bt_hci_s *hci = (struct bt_hci_s *) opaque;
815
816 if (!hci->conn_req_host)
817 /* Already accepted or rejected. If the other end cancelled the
818 * connection request then we still have to reject or accept it
819 * and then we'll get a disconnect. */
820 return;
821
822 /* TODO */
823 }
824
825 /* Remove from the list of devices which we wanted to connect to and
826 * are awaiting a response from. If the callback sees a response from
827 * a device which is not on the list it will assume it's a connection
828 * that's been cancelled by the host in the meantime and immediately
829 * try to detach the link and send a Connection Complete. */
830 static int bt_hci_lmp_connection_ready(struct bt_hci_s *hci,
831 bdaddr_t *bdaddr)
832 {
833 int i;
834
835 for (i = 0; i < hci->lm.connecting; i ++)
836 if (!bacmp(&hci->lm.awaiting_bdaddr[i], bdaddr)) {
837 if (i < -- hci->lm.connecting)
838 bacpy(&hci->lm.awaiting_bdaddr[i],
839 &hci->lm.awaiting_bdaddr[hci->lm.connecting]);
840 return 0;
841 }
842
843 return 1;
844 }
845
846 static void bt_hci_lmp_connection_complete(struct bt_link_s *link)
847 {
848 struct bt_hci_s *hci = hci_from_device(link->host);
849 evt_conn_complete params;
850 uint16_t handle;
851 uint8_t status = HCI_SUCCESS;
852 int tries = HCI_HANDLES_MAX;
853
854 if (bt_hci_lmp_connection_ready(hci, &link->slave->bd_addr)) {
855 if (!hci->device.reject_reason)
856 link->slave->lmp_disconnect_slave(link);
857 handle = 0;
858 status = HCI_NO_CONNECTION;
859 goto complete;
860 }
861
862 if (hci->device.reject_reason) {
863 handle = 0;
864 status = hci->device.reject_reason;
865 goto complete;
866 }
867
868 /* Make a connection handle */
869 do {
870 while (hci->lm.handle[++ hci->lm.last_handle].link && -- tries)
871 hci->lm.last_handle &= HCI_HANDLES_MAX - 1;
872 handle = hci->lm.last_handle | HCI_HANDLE_OFFSET;
873 } while ((handle == hci->asb_handle || handle == hci->psb_handle) &&
874 tries);
875
876 if (!tries) {
877 link->slave->lmp_disconnect_slave(link);
878 status = HCI_NO_CONNECTION;
879 goto complete;
880 }
881
882 /* Link established */
883 link->handle = handle;
884 bt_hci_lmp_link_establish(hci, link, 1);
885
886 complete:
887 params.status = status;
888 params.handle = HNDL(handle);
889 params.link_type = ACL_LINK;
890 bacpy(&params.bdaddr, &link->slave->bd_addr);
891 params.encr_mode = 0x00; /* Encryption not required */
892 bt_hci_event(hci, EVT_CONN_COMPLETE, &params, EVT_CONN_COMPLETE_SIZE);
893 }
894
895 static void bt_hci_disconnect(struct bt_hci_s *hci,
896 uint16_t handle, int reason)
897 {
898 struct bt_link_s *btlink =
899 hci->lm.handle[handle & ~HCI_HANDLE_OFFSET].link;
900 struct bt_hci_link_s *link;
901 evt_disconn_complete params;
902
903 if (bt_hci_role_master(hci, handle)) {
904 btlink->slave->reject_reason = reason;
905 btlink->slave->lmp_disconnect_slave(btlink);
906 /* The link pointer is invalid from now on */
907
908 goto complete;
909 }
910
911 btlink->host->reject_reason = reason;
912 btlink->host->lmp_disconnect_master(btlink);
913
914 /* We are the slave, we get to clean this burden */
915 link = (struct bt_hci_link_s *) btlink;
916 g_free(link);
917
918 complete:
919 bt_hci_lmp_link_teardown(hci, handle);
920
921 params.status = HCI_SUCCESS;
922 params.handle = HNDL(handle);
923 params.reason = HCI_CONNECTION_TERMINATED;
924 bt_hci_event(hci, EVT_DISCONN_COMPLETE,
925 &params, EVT_DISCONN_COMPLETE_SIZE);
926 }
927
928 /* TODO: use only one function */
929 static void bt_hci_lmp_disconnect_host(struct bt_link_s *link)
930 {
931 struct bt_hci_s *hci = hci_from_device(link->host);
932 uint16_t handle = link->handle;
933 evt_disconn_complete params;
934
935 bt_hci_lmp_link_teardown(hci, handle);
936
937 params.status = HCI_SUCCESS;
938 params.handle = HNDL(handle);
939 params.reason = hci->device.reject_reason;
940 bt_hci_event(hci, EVT_DISCONN_COMPLETE,
941 &params, EVT_DISCONN_COMPLETE_SIZE);
942 }
943
944 static void bt_hci_lmp_disconnect_slave(struct bt_link_s *btlink)
945 {
946 struct bt_hci_link_s *link = (struct bt_hci_link_s *) btlink;
947 struct bt_hci_s *hci = hci_from_device(btlink->slave);
948 uint16_t handle = link->handle;
949 evt_disconn_complete params;
950
951 g_free(link);
952
953 bt_hci_lmp_link_teardown(hci, handle);
954
955 params.status = HCI_SUCCESS;
956 params.handle = HNDL(handle);
957 params.reason = hci->device.reject_reason;
958 bt_hci_event(hci, EVT_DISCONN_COMPLETE,
959 &params, EVT_DISCONN_COMPLETE_SIZE);
960 }
961
962 static int bt_hci_name_req(struct bt_hci_s *hci, bdaddr_t *bdaddr)
963 {
964 struct bt_device_s *slave;
965 evt_remote_name_req_complete params;
966
967 for (slave = hci->device.net->slave; slave; slave = slave->next)
968 if (slave->page_scan && !bacmp(&slave->bd_addr, bdaddr))
969 break;
970 if (!slave)
971 return -ENODEV;
972
973 bt_hci_event_status(hci, HCI_SUCCESS);
974
975 params.status = HCI_SUCCESS;
976 bacpy(&params.bdaddr, &slave->bd_addr);
977 pstrcpy(params.name, sizeof(params.name), slave->lmp_name ?: "");
978 bt_hci_event(hci, EVT_REMOTE_NAME_REQ_COMPLETE,
979 &params, EVT_REMOTE_NAME_REQ_COMPLETE_SIZE);
980
981 return 0;
982 }
983
984 static int bt_hci_features_req(struct bt_hci_s *hci, uint16_t handle)
985 {
986 struct bt_device_s *slave;
987 evt_read_remote_features_complete params;
988
989 if (bt_hci_handle_bad(hci, handle))
990 return -ENODEV;
991
992 slave = bt_hci_remote_dev(hci, handle);
993
994 bt_hci_event_status(hci, HCI_SUCCESS);
995
996 params.status = HCI_SUCCESS;
997 params.handle = HNDL(handle);
998 params.features[0] = (slave->lmp_caps >> 0) & 0xff;
999 params.features[1] = (slave->lmp_caps >> 8) & 0xff;
1000 params.features[2] = (slave->lmp_caps >> 16) & 0xff;
1001 params.features[3] = (slave->lmp_caps >> 24) & 0xff;
1002 params.features[4] = (slave->lmp_caps >> 32) & 0xff;
1003 params.features[5] = (slave->lmp_caps >> 40) & 0xff;
1004 params.features[6] = (slave->lmp_caps >> 48) & 0xff;
1005 params.features[7] = (slave->lmp_caps >> 56) & 0xff;
1006 bt_hci_event(hci, EVT_READ_REMOTE_FEATURES_COMPLETE,
1007 &params, EVT_READ_REMOTE_FEATURES_COMPLETE_SIZE);
1008
1009 return 0;
1010 }
1011
1012 static int bt_hci_version_req(struct bt_hci_s *hci, uint16_t handle)
1013 {
1014 evt_read_remote_version_complete params;
1015
1016 if (bt_hci_handle_bad(hci, handle))
1017 return -ENODEV;
1018
1019 bt_hci_remote_dev(hci, handle);
1020
1021 bt_hci_event_status(hci, HCI_SUCCESS);
1022
1023 params.status = HCI_SUCCESS;
1024 params.handle = HNDL(handle);
1025 params.lmp_ver = 0x03;
1026 params.manufacturer = cpu_to_le16(0xa000);
1027 params.lmp_subver = cpu_to_le16(0xa607);
1028 bt_hci_event(hci, EVT_READ_REMOTE_VERSION_COMPLETE,
1029 &params, EVT_READ_REMOTE_VERSION_COMPLETE_SIZE);
1030
1031 return 0;
1032 }
1033
1034 static int bt_hci_clkoffset_req(struct bt_hci_s *hci, uint16_t handle)
1035 {
1036 struct bt_device_s *slave;
1037 evt_read_clock_offset_complete params;
1038
1039 if (bt_hci_handle_bad(hci, handle))
1040 return -ENODEV;
1041
1042 slave = bt_hci_remote_dev(hci, handle);
1043
1044 bt_hci_event_status(hci, HCI_SUCCESS);
1045
1046 params.status = HCI_SUCCESS;
1047 params.handle = HNDL(handle);
1048 /* TODO: return the clkoff *differenece* */
1049 params.clock_offset = slave->clkoff; /* Note: no swapping */
1050 bt_hci_event(hci, EVT_READ_CLOCK_OFFSET_COMPLETE,
1051 &params, EVT_READ_CLOCK_OFFSET_COMPLETE_SIZE);
1052
1053 return 0;
1054 }
1055
1056 static void bt_hci_event_mode(struct bt_hci_s *hci, struct bt_link_s *link,
1057 uint16_t handle)
1058 {
1059 evt_mode_change params = {
1060 .status = HCI_SUCCESS,
1061 .handle = HNDL(handle),
1062 .mode = link->acl_mode,
1063 .interval = cpu_to_le16(link->acl_interval),
1064 };
1065
1066 bt_hci_event(hci, EVT_MODE_CHANGE, &params, EVT_MODE_CHANGE_SIZE);
1067 }
1068
1069 static void bt_hci_lmp_mode_change_master(struct bt_hci_s *hci,
1070 struct bt_link_s *link, int mode, uint16_t interval)
1071 {
1072 link->acl_mode = mode;
1073 link->acl_interval = interval;
1074
1075 bt_hci_event_mode(hci, link, link->handle);
1076
1077 link->slave->lmp_mode_change(link);
1078 }
1079
1080 static void bt_hci_lmp_mode_change_slave(struct bt_link_s *btlink)
1081 {
1082 struct bt_hci_link_s *link = (struct bt_hci_link_s *) btlink;
1083 struct bt_hci_s *hci = hci_from_device(btlink->slave);
1084
1085 bt_hci_event_mode(hci, btlink, link->handle);
1086 }
1087
1088 static int bt_hci_mode_change(struct bt_hci_s *hci, uint16_t handle,
1089 int interval, int mode)
1090 {
1091 struct bt_hci_master_link_s *link;
1092
1093 if (bt_hci_handle_bad(hci, handle) || !bt_hci_role_master(hci, handle))
1094 return -ENODEV;
1095
1096 link = &hci->lm.handle[handle & ~HCI_HANDLE_OFFSET];
1097 if (link->link->acl_mode != acl_active) {
1098 bt_hci_event_status(hci, HCI_COMMAND_DISALLOWED);
1099 return 0;
1100 }
1101
1102 bt_hci_event_status(hci, HCI_SUCCESS);
1103
1104 timer_mod(link->acl_mode_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1105 ((uint64_t)interval * 625) * 1000);
1106 bt_hci_lmp_mode_change_master(hci, link->link, mode, interval);
1107
1108 return 0;
1109 }
1110
1111 static int bt_hci_mode_cancel(struct bt_hci_s *hci, uint16_t handle, int mode)
1112 {
1113 struct bt_hci_master_link_s *link;
1114
1115 if (bt_hci_handle_bad(hci, handle) || !bt_hci_role_master(hci, handle))
1116 return -ENODEV;
1117
1118 link = &hci->lm.handle[handle & ~HCI_HANDLE_OFFSET];
1119 if (link->link->acl_mode != mode) {
1120 bt_hci_event_status(hci, HCI_COMMAND_DISALLOWED);
1121
1122 return 0;
1123 }
1124
1125 bt_hci_event_status(hci, HCI_SUCCESS);
1126
1127 timer_del(link->acl_mode_timer);
1128 bt_hci_lmp_mode_change_master(hci, link->link, acl_active, 0);
1129
1130 return 0;
1131 }
1132
1133 static void bt_hci_mode_tick(void *opaque)
1134 {
1135 struct bt_link_s *link = opaque;
1136 struct bt_hci_s *hci = hci_from_device(link->host);
1137
1138 bt_hci_lmp_mode_change_master(hci, link, acl_active, 0);
1139 }
1140
1141 static void bt_hci_reset(struct bt_hci_s *hci)
1142 {
1143 hci->acl_len = 0;
1144 hci->last_cmd = 0;
1145 hci->lm.connecting = 0;
1146
1147 hci->event_mask[0] = 0xff;
1148 hci->event_mask[1] = 0xff;
1149 hci->event_mask[2] = 0xff;
1150 hci->event_mask[3] = 0xff;
1151 hci->event_mask[4] = 0xff;
1152 hci->event_mask[5] = 0x1f;
1153 hci->event_mask[6] = 0x00;
1154 hci->event_mask[7] = 0x00;
1155 hci->device.inquiry_scan = 0;
1156 hci->device.page_scan = 0;
1157 g_free((void *) hci->device.lmp_name);
1158 hci->device.lmp_name = NULL;
1159 hci->device.class[0] = 0x00;
1160 hci->device.class[1] = 0x00;
1161 hci->device.class[2] = 0x00;
1162 hci->voice_setting = 0x0000;
1163 hci->conn_accept_tout = 0x1f40;
1164 hci->lm.inquiry_mode = 0x00;
1165
1166 hci->psb_handle = 0x000;
1167 hci->asb_handle = 0x000;
1168
1169 /* XXX: timer_del(sl->acl_mode_timer); for all links */
1170 timer_del(hci->lm.inquiry_done);
1171 timer_del(hci->lm.inquiry_next);
1172 timer_del(hci->conn_accept_timer);
1173 }
1174
1175 static void bt_hci_read_local_version_rp(struct bt_hci_s *hci)
1176 {
1177 read_local_version_rp lv = {
1178 .status = HCI_SUCCESS,
1179 .hci_ver = 0x03,
1180 .hci_rev = cpu_to_le16(0xa607),
1181 .lmp_ver = 0x03,
1182 .manufacturer = cpu_to_le16(0xa000),
1183 .lmp_subver = cpu_to_le16(0xa607),
1184 };
1185
1186 bt_hci_event_complete(hci, &lv, READ_LOCAL_VERSION_RP_SIZE);
1187 }
1188
1189 static void bt_hci_read_local_commands_rp(struct bt_hci_s *hci)
1190 {
1191 read_local_commands_rp lc = {
1192 .status = HCI_SUCCESS,
1193 .commands = {
1194 /* Keep updated! */
1195 /* Also, keep in sync with hci->device.lmp_caps in bt_new_hci */
1196 0xbf, 0x80, 0xf9, 0x03, 0xb2, 0xc0, 0x03, 0xc3,
1197 0x00, 0x0f, 0x80, 0x00, 0xc0, 0x00, 0xe8, 0x13,
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 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1203 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1204 },
1205 };
1206
1207 bt_hci_event_complete(hci, &lc, READ_LOCAL_COMMANDS_RP_SIZE);
1208 }
1209
1210 static void bt_hci_read_local_features_rp(struct bt_hci_s *hci)
1211 {
1212 read_local_features_rp lf = {
1213 .status = HCI_SUCCESS,
1214 .features = {
1215 (hci->device.lmp_caps >> 0) & 0xff,
1216 (hci->device.lmp_caps >> 8) & 0xff,
1217 (hci->device.lmp_caps >> 16) & 0xff,
1218 (hci->device.lmp_caps >> 24) & 0xff,
1219 (hci->device.lmp_caps >> 32) & 0xff,
1220 (hci->device.lmp_caps >> 40) & 0xff,
1221 (hci->device.lmp_caps >> 48) & 0xff,
1222 (hci->device.lmp_caps >> 56) & 0xff,
1223 },
1224 };
1225
1226 bt_hci_event_complete(hci, &lf, READ_LOCAL_FEATURES_RP_SIZE);
1227 }
1228
1229 static void bt_hci_read_local_ext_features_rp(struct bt_hci_s *hci, int page)
1230 {
1231 read_local_ext_features_rp lef = {
1232 .status = HCI_SUCCESS,
1233 .page_num = page,
1234 .max_page_num = 0x00,
1235 .features = {
1236 /* Keep updated! */
1237 0x5f, 0x35, 0x85, 0x7e, 0x9b, 0x19, 0x00, 0x80,
1238 },
1239 };
1240 if (page)
1241 memset(lef.features, 0, sizeof(lef.features));
1242
1243 bt_hci_event_complete(hci, &lef, READ_LOCAL_EXT_FEATURES_RP_SIZE);
1244 }
1245
1246 static void bt_hci_read_buffer_size_rp(struct bt_hci_s *hci)
1247 {
1248 read_buffer_size_rp bs = {
1249 /* This can be made configurable, for one standard USB dongle HCI
1250 * the four values are cpu_to_le16(0x0180), 0x40,
1251 * cpu_to_le16(0x0008), cpu_to_le16(0x0008). */
1252 .status = HCI_SUCCESS,
1253 .acl_mtu = cpu_to_le16(0x0200),
1254 .sco_mtu = 0,
1255 .acl_max_pkt = cpu_to_le16(0x0001),
1256 .sco_max_pkt = cpu_to_le16(0x0000),
1257 };
1258
1259 bt_hci_event_complete(hci, &bs, READ_BUFFER_SIZE_RP_SIZE);
1260 }
1261
1262 /* Deprecated in V2.0 (page 661) */
1263 static void bt_hci_read_country_code_rp(struct bt_hci_s *hci)
1264 {
1265 read_country_code_rp cc ={
1266 .status = HCI_SUCCESS,
1267 .country_code = 0x00, /* North America & Europe^1 and Japan */
1268 };
1269
1270 bt_hci_event_complete(hci, &cc, READ_COUNTRY_CODE_RP_SIZE);
1271
1272 /* ^1. Except France, sorry */
1273 }
1274
1275 static void bt_hci_read_bd_addr_rp(struct bt_hci_s *hci)
1276 {
1277 read_bd_addr_rp ba = {
1278 .status = HCI_SUCCESS,
1279 .bdaddr = BAINIT(&hci->device.bd_addr),
1280 };
1281
1282 bt_hci_event_complete(hci, &ba, READ_BD_ADDR_RP_SIZE);
1283 }
1284
1285 static int bt_hci_link_quality_rp(struct bt_hci_s *hci, uint16_t handle)
1286 {
1287 read_link_quality_rp lq = {
1288 .status = HCI_SUCCESS,
1289 .handle = HNDL(handle),
1290 .link_quality = 0xff,
1291 };
1292
1293 if (bt_hci_handle_bad(hci, handle))
1294 lq.status = HCI_NO_CONNECTION;
1295
1296 bt_hci_event_complete(hci, &lq, READ_LINK_QUALITY_RP_SIZE);
1297 return 0;
1298 }
1299
1300 /* Generate a Command Complete event with only the Status parameter */
1301 static inline void bt_hci_event_complete_status(struct bt_hci_s *hci,
1302 uint8_t status)
1303 {
1304 bt_hci_event_complete(hci, &status, 1);
1305 }
1306
1307 static inline void bt_hci_event_complete_conn_cancel(struct bt_hci_s *hci,
1308 uint8_t status, bdaddr_t *bd_addr)
1309 {
1310 create_conn_cancel_rp params = {
1311 .status = status,
1312 .bdaddr = BAINIT(bd_addr),
1313 };
1314
1315 bt_hci_event_complete(hci, &params, CREATE_CONN_CANCEL_RP_SIZE);
1316 }
1317
1318 static inline void bt_hci_event_auth_complete(struct bt_hci_s *hci,
1319 uint16_t handle)
1320 {
1321 evt_auth_complete params = {
1322 .status = HCI_SUCCESS,
1323 .handle = HNDL(handle),
1324 };
1325
1326 bt_hci_event(hci, EVT_AUTH_COMPLETE, &params, EVT_AUTH_COMPLETE_SIZE);
1327 }
1328
1329 static inline void bt_hci_event_encrypt_change(struct bt_hci_s *hci,
1330 uint16_t handle, uint8_t mode)
1331 {
1332 evt_encrypt_change params = {
1333 .status = HCI_SUCCESS,
1334 .handle = HNDL(handle),
1335 .encrypt = mode,
1336 };
1337
1338 bt_hci_event(hci, EVT_ENCRYPT_CHANGE, &params, EVT_ENCRYPT_CHANGE_SIZE);
1339 }
1340
1341 static inline void bt_hci_event_complete_name_cancel(struct bt_hci_s *hci,
1342 bdaddr_t *bd_addr)
1343 {
1344 remote_name_req_cancel_rp params = {
1345 .status = HCI_INVALID_PARAMETERS,
1346 .bdaddr = BAINIT(bd_addr),
1347 };
1348
1349 bt_hci_event_complete(hci, &params, REMOTE_NAME_REQ_CANCEL_RP_SIZE);
1350 }
1351
1352 static inline void bt_hci_event_read_remote_ext_features(struct bt_hci_s *hci,
1353 uint16_t handle)
1354 {
1355 evt_read_remote_ext_features_complete params = {
1356 .status = HCI_UNSUPPORTED_FEATURE,
1357 .handle = HNDL(handle),
1358 /* Rest uninitialised */
1359 };
1360
1361 bt_hci_event(hci, EVT_READ_REMOTE_EXT_FEATURES_COMPLETE,
1362 &params, EVT_READ_REMOTE_EXT_FEATURES_COMPLETE_SIZE);
1363 }
1364
1365 static inline void bt_hci_event_complete_lmp_handle(struct bt_hci_s *hci,
1366 uint16_t handle)
1367 {
1368 read_lmp_handle_rp params = {
1369 .status = HCI_NO_CONNECTION,
1370 .handle = HNDL(handle),
1371 .reserved = 0,
1372 /* Rest uninitialised */
1373 };
1374
1375 bt_hci_event_complete(hci, &params, READ_LMP_HANDLE_RP_SIZE);
1376 }
1377
1378 static inline void bt_hci_event_complete_role_discovery(struct bt_hci_s *hci,
1379 int status, uint16_t handle, int master)
1380 {
1381 role_discovery_rp params = {
1382 .status = status,
1383 .handle = HNDL(handle),
1384 .role = master ? 0x00 : 0x01,
1385 };
1386
1387 bt_hci_event_complete(hci, &params, ROLE_DISCOVERY_RP_SIZE);
1388 }
1389
1390 static inline void bt_hci_event_complete_flush(struct bt_hci_s *hci,
1391 int status, uint16_t handle)
1392 {
1393 flush_rp params = {
1394 .status = status,
1395 .handle = HNDL(handle),
1396 };
1397
1398 bt_hci_event_complete(hci, &params, FLUSH_RP_SIZE);
1399 }
1400
1401 static inline void bt_hci_event_complete_read_local_name(struct bt_hci_s *hci)
1402 {
1403 read_local_name_rp params;
1404 params.status = HCI_SUCCESS;
1405 memset(params.name, 0, sizeof(params.name));
1406 if (hci->device.lmp_name)
1407 pstrcpy(params.name, sizeof(params.name), hci->device.lmp_name);
1408
1409 bt_hci_event_complete(hci, &params, READ_LOCAL_NAME_RP_SIZE);
1410 }
1411
1412 static inline void bt_hci_event_complete_read_conn_accept_timeout(
1413 struct bt_hci_s *hci)
1414 {
1415 read_conn_accept_timeout_rp params = {
1416 .status = HCI_SUCCESS,
1417 .timeout = cpu_to_le16(hci->conn_accept_tout),
1418 };
1419
1420 bt_hci_event_complete(hci, &params, READ_CONN_ACCEPT_TIMEOUT_RP_SIZE);
1421 }
1422
1423 static inline void bt_hci_event_complete_read_scan_enable(struct bt_hci_s *hci)
1424 {
1425 read_scan_enable_rp params = {
1426 .status = HCI_SUCCESS,
1427 .enable =
1428 (hci->device.inquiry_scan ? SCAN_INQUIRY : 0) |
1429 (hci->device.page_scan ? SCAN_PAGE : 0),
1430 };
1431
1432 bt_hci_event_complete(hci, &params, READ_SCAN_ENABLE_RP_SIZE);
1433 }
1434
1435 static inline void bt_hci_event_complete_read_local_class(struct bt_hci_s *hci)
1436 {
1437 read_class_of_dev_rp params;
1438
1439 params.status = HCI_SUCCESS;
1440 memcpy(params.dev_class, hci->device.class, sizeof(params.dev_class));
1441
1442 bt_hci_event_complete(hci, &params, READ_CLASS_OF_DEV_RP_SIZE);
1443 }
1444
1445 static inline void bt_hci_event_complete_voice_setting(struct bt_hci_s *hci)
1446 {
1447 read_voice_setting_rp params = {
1448 .status = HCI_SUCCESS,
1449 .voice_setting = hci->voice_setting, /* Note: no swapping */
1450 };
1451
1452 bt_hci_event_complete(hci, &params, READ_VOICE_SETTING_RP_SIZE);
1453 }
1454
1455 static inline void bt_hci_event_complete_read_inquiry_mode(
1456 struct bt_hci_s *hci)
1457 {
1458 read_inquiry_mode_rp params = {
1459 .status = HCI_SUCCESS,
1460 .mode = hci->lm.inquiry_mode,
1461 };
1462
1463 bt_hci_event_complete(hci, &params, READ_INQUIRY_MODE_RP_SIZE);
1464 }
1465
1466 static inline void bt_hci_event_num_comp_pkts(struct bt_hci_s *hci,
1467 uint16_t handle, int packets)
1468 {
1469 uint16_t buf[EVT_NUM_COMP_PKTS_SIZE(1) / 2 + 1];
1470 evt_num_comp_pkts *params = (void *) ((uint8_t *) buf + 1);
1471
1472 params->num_hndl = 1;
1473 params->connection->handle = HNDL(handle);
1474 params->connection->num_packets = cpu_to_le16(packets);
1475
1476 bt_hci_event(hci, EVT_NUM_COMP_PKTS, params, EVT_NUM_COMP_PKTS_SIZE(1));
1477 }
1478
1479 static void bt_submit_hci(struct HCIInfo *info,
1480 const uint8_t *data, int length)
1481 {
1482 struct bt_hci_s *hci = hci_from_info(info);
1483 uint16_t cmd;
1484 int paramlen, i;
1485
1486 if (length < HCI_COMMAND_HDR_SIZE)
1487 goto short_hci;
1488
1489 memcpy(&hci->last_cmd, data, 2);
1490
1491 cmd = (data[1] << 8) | data[0];
1492 paramlen = data[2];
1493 if (cmd_opcode_ogf(cmd) == 0 || cmd_opcode_ocf(cmd) == 0) /* NOP */
1494 return;
1495
1496 data += HCI_COMMAND_HDR_SIZE;
1497 length -= HCI_COMMAND_HDR_SIZE;
1498
1499 if (paramlen > length)
1500 return;
1501
1502 #define PARAM(cmd, param) (((cmd##_cp *) data)->param)
1503 #define PARAM16(cmd, param) lduw_le_p(&PARAM(cmd, param))
1504 #define PARAMHANDLE(cmd) PARAM16(cmd, handle)
1505 #define LENGTH_CHECK(cmd) if (length < sizeof(cmd##_cp)) goto short_hci
1506 /* Note: the supported commands bitmask in bt_hci_read_local_commands_rp
1507 * needs to be updated every time a command is implemented here! */
1508 switch (cmd) {
1509 case cmd_opcode_pack(OGF_LINK_CTL, OCF_INQUIRY):
1510 LENGTH_CHECK(inquiry);
1511
1512 if (PARAM(inquiry, length) < 1) {
1513 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1514 break;
1515 }
1516
1517 hci->lm.inquire = 1;
1518 hci->lm.periodic = 0;
1519 hci->lm.responses_left = PARAM(inquiry, num_rsp) ?: INT_MAX;
1520 hci->lm.responses = 0;
1521 bt_hci_event_status(hci, HCI_SUCCESS);
1522 bt_hci_inquiry_start(hci, PARAM(inquiry, length));
1523 break;
1524
1525 case cmd_opcode_pack(OGF_LINK_CTL, OCF_INQUIRY_CANCEL):
1526 if (!hci->lm.inquire || hci->lm.periodic) {
1527 fprintf(stderr, "%s: Inquiry Cancel should only be issued after "
1528 "the Inquiry command has been issued, a Command "
1529 "Status event has been received for the Inquiry "
1530 "command, and before the Inquiry Complete event "
1531 "occurs", __FUNCTION__);
1532 bt_hci_event_complete_status(hci, HCI_COMMAND_DISALLOWED);
1533 break;
1534 }
1535
1536 hci->lm.inquire = 0;
1537 timer_del(hci->lm.inquiry_done);
1538 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1539 break;
1540
1541 case cmd_opcode_pack(OGF_LINK_CTL, OCF_PERIODIC_INQUIRY):
1542 LENGTH_CHECK(periodic_inquiry);
1543
1544 if (!(PARAM(periodic_inquiry, length) <
1545 PARAM16(periodic_inquiry, min_period) &&
1546 PARAM16(periodic_inquiry, min_period) <
1547 PARAM16(periodic_inquiry, max_period)) ||
1548 PARAM(periodic_inquiry, length) < 1 ||
1549 PARAM16(periodic_inquiry, min_period) < 2 ||
1550 PARAM16(periodic_inquiry, max_period) < 3) {
1551 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1552 break;
1553 }
1554
1555 hci->lm.inquire = 1;
1556 hci->lm.periodic = 1;
1557 hci->lm.responses_left = PARAM(periodic_inquiry, num_rsp);
1558 hci->lm.responses = 0;
1559 hci->lm.inquiry_period = PARAM16(periodic_inquiry, max_period);
1560 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1561 bt_hci_inquiry_start(hci, PARAM(periodic_inquiry, length));
1562 break;
1563
1564 case cmd_opcode_pack(OGF_LINK_CTL, OCF_EXIT_PERIODIC_INQUIRY):
1565 if (!hci->lm.inquire || !hci->lm.periodic) {
1566 fprintf(stderr, "%s: Inquiry Cancel should only be issued after "
1567 "the Inquiry command has been issued, a Command "
1568 "Status event has been received for the Inquiry "
1569 "command, and before the Inquiry Complete event "
1570 "occurs", __FUNCTION__);
1571 bt_hci_event_complete_status(hci, HCI_COMMAND_DISALLOWED);
1572 break;
1573 }
1574 hci->lm.inquire = 0;
1575 timer_del(hci->lm.inquiry_done);
1576 timer_del(hci->lm.inquiry_next);
1577 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1578 break;
1579
1580 case cmd_opcode_pack(OGF_LINK_CTL, OCF_CREATE_CONN):
1581 LENGTH_CHECK(create_conn);
1582
1583 if (hci->lm.connecting >= HCI_HANDLES_MAX) {
1584 bt_hci_event_status(hci, HCI_REJECTED_LIMITED_RESOURCES);
1585 break;
1586 }
1587 bt_hci_event_status(hci, HCI_SUCCESS);
1588
1589 if (bt_hci_connect(hci, &PARAM(create_conn, bdaddr)))
1590 bt_hci_connection_reject_event(hci, &PARAM(create_conn, bdaddr));
1591 break;
1592
1593 case cmd_opcode_pack(OGF_LINK_CTL, OCF_DISCONNECT):
1594 LENGTH_CHECK(disconnect);
1595
1596 if (bt_hci_handle_bad(hci, PARAMHANDLE(disconnect))) {
1597 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1598 break;
1599 }
1600
1601 bt_hci_event_status(hci, HCI_SUCCESS);
1602 bt_hci_disconnect(hci, PARAMHANDLE(disconnect),
1603 PARAM(disconnect, reason));
1604 break;
1605
1606 case cmd_opcode_pack(OGF_LINK_CTL, OCF_CREATE_CONN_CANCEL):
1607 LENGTH_CHECK(create_conn_cancel);
1608
1609 if (bt_hci_lmp_connection_ready(hci,
1610 &PARAM(create_conn_cancel, bdaddr))) {
1611 for (i = 0; i < HCI_HANDLES_MAX; i ++)
1612 if (bt_hci_role_master(hci, i) && hci->lm.handle[i].link &&
1613 !bacmp(&hci->lm.handle[i].link->slave->bd_addr,
1614 &PARAM(create_conn_cancel, bdaddr)))
1615 break;
1616
1617 bt_hci_event_complete_conn_cancel(hci, i < HCI_HANDLES_MAX ?
1618 HCI_ACL_CONNECTION_EXISTS : HCI_NO_CONNECTION,
1619 &PARAM(create_conn_cancel, bdaddr));
1620 } else
1621 bt_hci_event_complete_conn_cancel(hci, HCI_SUCCESS,
1622 &PARAM(create_conn_cancel, bdaddr));
1623 break;
1624
1625 case cmd_opcode_pack(OGF_LINK_CTL, OCF_ACCEPT_CONN_REQ):
1626 LENGTH_CHECK(accept_conn_req);
1627
1628 if (!hci->conn_req_host ||
1629 bacmp(&PARAM(accept_conn_req, bdaddr),
1630 &hci->conn_req_host->bd_addr)) {
1631 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1632 break;
1633 }
1634
1635 bt_hci_event_status(hci, HCI_SUCCESS);
1636 bt_hci_connection_accept(hci, hci->conn_req_host);
1637 hci->conn_req_host = NULL;
1638 break;
1639
1640 case cmd_opcode_pack(OGF_LINK_CTL, OCF_REJECT_CONN_REQ):
1641 LENGTH_CHECK(reject_conn_req);
1642
1643 if (!hci->conn_req_host ||
1644 bacmp(&PARAM(reject_conn_req, bdaddr),
1645 &hci->conn_req_host->bd_addr)) {
1646 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1647 break;
1648 }
1649
1650 bt_hci_event_status(hci, HCI_SUCCESS);
1651 bt_hci_connection_reject(hci, hci->conn_req_host,
1652 PARAM(reject_conn_req, reason));
1653 bt_hci_connection_reject_event(hci, &hci->conn_req_host->bd_addr);
1654 hci->conn_req_host = NULL;
1655 break;
1656
1657 case cmd_opcode_pack(OGF_LINK_CTL, OCF_AUTH_REQUESTED):
1658 LENGTH_CHECK(auth_requested);
1659
1660 if (bt_hci_handle_bad(hci, PARAMHANDLE(auth_requested)))
1661 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1662 else {
1663 bt_hci_event_status(hci, HCI_SUCCESS);
1664 bt_hci_event_auth_complete(hci, PARAMHANDLE(auth_requested));
1665 }
1666 break;
1667
1668 case cmd_opcode_pack(OGF_LINK_CTL, OCF_SET_CONN_ENCRYPT):
1669 LENGTH_CHECK(set_conn_encrypt);
1670
1671 if (bt_hci_handle_bad(hci, PARAMHANDLE(set_conn_encrypt)))
1672 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1673 else {
1674 bt_hci_event_status(hci, HCI_SUCCESS);
1675 bt_hci_event_encrypt_change(hci,
1676 PARAMHANDLE(set_conn_encrypt),
1677 PARAM(set_conn_encrypt, encrypt));
1678 }
1679 break;
1680
1681 case cmd_opcode_pack(OGF_LINK_CTL, OCF_REMOTE_NAME_REQ):
1682 LENGTH_CHECK(remote_name_req);
1683
1684 if (bt_hci_name_req(hci, &PARAM(remote_name_req, bdaddr)))
1685 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1686 break;
1687
1688 case cmd_opcode_pack(OGF_LINK_CTL, OCF_REMOTE_NAME_REQ_CANCEL):
1689 LENGTH_CHECK(remote_name_req_cancel);
1690
1691 bt_hci_event_complete_name_cancel(hci,
1692 &PARAM(remote_name_req_cancel, bdaddr));
1693 break;
1694
1695 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_REMOTE_FEATURES):
1696 LENGTH_CHECK(read_remote_features);
1697
1698 if (bt_hci_features_req(hci, PARAMHANDLE(read_remote_features)))
1699 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1700 break;
1701
1702 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_REMOTE_EXT_FEATURES):
1703 LENGTH_CHECK(read_remote_ext_features);
1704
1705 if (bt_hci_handle_bad(hci, PARAMHANDLE(read_remote_ext_features)))
1706 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1707 else {
1708 bt_hci_event_status(hci, HCI_SUCCESS);
1709 bt_hci_event_read_remote_ext_features(hci,
1710 PARAMHANDLE(read_remote_ext_features));
1711 }
1712 break;
1713
1714 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_REMOTE_VERSION):
1715 LENGTH_CHECK(read_remote_version);
1716
1717 if (bt_hci_version_req(hci, PARAMHANDLE(read_remote_version)))
1718 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1719 break;
1720
1721 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_CLOCK_OFFSET):
1722 LENGTH_CHECK(read_clock_offset);
1723
1724 if (bt_hci_clkoffset_req(hci, PARAMHANDLE(read_clock_offset)))
1725 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1726 break;
1727
1728 case cmd_opcode_pack(OGF_LINK_CTL, OCF_READ_LMP_HANDLE):
1729 LENGTH_CHECK(read_lmp_handle);
1730
1731 /* TODO: */
1732 bt_hci_event_complete_lmp_handle(hci, PARAMHANDLE(read_lmp_handle));
1733 break;
1734
1735 case cmd_opcode_pack(OGF_LINK_POLICY, OCF_HOLD_MODE):
1736 LENGTH_CHECK(hold_mode);
1737
1738 if (PARAM16(hold_mode, min_interval) >
1739 PARAM16(hold_mode, max_interval) ||
1740 PARAM16(hold_mode, min_interval) < 0x0002 ||
1741 PARAM16(hold_mode, max_interval) > 0xff00 ||
1742 (PARAM16(hold_mode, min_interval) & 1) ||
1743 (PARAM16(hold_mode, max_interval) & 1)) {
1744 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1745 break;
1746 }
1747
1748 if (bt_hci_mode_change(hci, PARAMHANDLE(hold_mode),
1749 PARAM16(hold_mode, max_interval),
1750 acl_hold))
1751 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1752 break;
1753
1754 case cmd_opcode_pack(OGF_LINK_POLICY, OCF_PARK_MODE):
1755 LENGTH_CHECK(park_mode);
1756
1757 if (PARAM16(park_mode, min_interval) >
1758 PARAM16(park_mode, max_interval) ||
1759 PARAM16(park_mode, min_interval) < 0x000e ||
1760 (PARAM16(park_mode, min_interval) & 1) ||
1761 (PARAM16(park_mode, max_interval) & 1)) {
1762 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1763 break;
1764 }
1765
1766 if (bt_hci_mode_change(hci, PARAMHANDLE(park_mode),
1767 PARAM16(park_mode, max_interval),
1768 acl_parked))
1769 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1770 break;
1771
1772 case cmd_opcode_pack(OGF_LINK_POLICY, OCF_EXIT_PARK_MODE):
1773 LENGTH_CHECK(exit_park_mode);
1774
1775 if (bt_hci_mode_cancel(hci, PARAMHANDLE(exit_park_mode),
1776 acl_parked))
1777 bt_hci_event_status(hci, HCI_NO_CONNECTION);
1778 break;
1779
1780 case cmd_opcode_pack(OGF_LINK_POLICY, OCF_ROLE_DISCOVERY):
1781 LENGTH_CHECK(role_discovery);
1782
1783 if (bt_hci_handle_bad(hci, PARAMHANDLE(role_discovery)))
1784 bt_hci_event_complete_role_discovery(hci,
1785 HCI_NO_CONNECTION, PARAMHANDLE(role_discovery), 0);
1786 else
1787 bt_hci_event_complete_role_discovery(hci,
1788 HCI_SUCCESS, PARAMHANDLE(role_discovery),
1789 bt_hci_role_master(hci,
1790 PARAMHANDLE(role_discovery)));
1791 break;
1792
1793 case cmd_opcode_pack(OGF_HOST_CTL, OCF_SET_EVENT_MASK):
1794 LENGTH_CHECK(set_event_mask);
1795
1796 memcpy(hci->event_mask, PARAM(set_event_mask, mask), 8);
1797 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1798 break;
1799
1800 case cmd_opcode_pack(OGF_HOST_CTL, OCF_RESET):
1801 bt_hci_reset(hci);
1802 bt_hci_event_status(hci, HCI_SUCCESS);
1803 break;
1804
1805 case cmd_opcode_pack(OGF_HOST_CTL, OCF_SET_EVENT_FLT):
1806 if (length >= 1 && PARAM(set_event_flt, flt_type) == FLT_CLEAR_ALL)
1807 /* No length check */;
1808 else
1809 LENGTH_CHECK(set_event_flt);
1810
1811 /* Filters are not implemented */
1812 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1813 break;
1814
1815 case cmd_opcode_pack(OGF_HOST_CTL, OCF_FLUSH):
1816 LENGTH_CHECK(flush);
1817
1818 if (bt_hci_handle_bad(hci, PARAMHANDLE(flush)))
1819 bt_hci_event_complete_flush(hci,
1820 HCI_NO_CONNECTION, PARAMHANDLE(flush));
1821 else {
1822 /* TODO: ordering? */
1823 bt_hci_event(hci, EVT_FLUSH_OCCURRED,
1824 &PARAM(flush, handle),
1825 EVT_FLUSH_OCCURRED_SIZE);
1826 bt_hci_event_complete_flush(hci,
1827 HCI_SUCCESS, PARAMHANDLE(flush));
1828 }
1829 break;
1830
1831 case cmd_opcode_pack(OGF_HOST_CTL, OCF_CHANGE_LOCAL_NAME):
1832 LENGTH_CHECK(change_local_name);
1833
1834 g_free((void *) hci->device.lmp_name);
1835 hci->device.lmp_name = g_strndup(PARAM(change_local_name, name),
1836 sizeof(PARAM(change_local_name, name)));
1837 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1838 break;
1839
1840 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_LOCAL_NAME):
1841 bt_hci_event_complete_read_local_name(hci);
1842 break;
1843
1844 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_CONN_ACCEPT_TIMEOUT):
1845 bt_hci_event_complete_read_conn_accept_timeout(hci);
1846 break;
1847
1848 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_CONN_ACCEPT_TIMEOUT):
1849 /* TODO */
1850 LENGTH_CHECK(write_conn_accept_timeout);
1851
1852 if (PARAM16(write_conn_accept_timeout, timeout) < 0x0001 ||
1853 PARAM16(write_conn_accept_timeout, timeout) > 0xb540) {
1854 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1855 break;
1856 }
1857
1858 hci->conn_accept_tout = PARAM16(write_conn_accept_timeout, timeout);
1859 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1860 break;
1861
1862 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_SCAN_ENABLE):
1863 bt_hci_event_complete_read_scan_enable(hci);
1864 break;
1865
1866 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_SCAN_ENABLE):
1867 LENGTH_CHECK(write_scan_enable);
1868
1869 /* TODO: check that the remaining bits are all 0 */
1870 hci->device.inquiry_scan =
1871 !!(PARAM(write_scan_enable, scan_enable) & SCAN_INQUIRY);
1872 hci->device.page_scan =
1873 !!(PARAM(write_scan_enable, scan_enable) & SCAN_PAGE);
1874 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1875 break;
1876
1877 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_CLASS_OF_DEV):
1878 bt_hci_event_complete_read_local_class(hci);
1879 break;
1880
1881 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_CLASS_OF_DEV):
1882 LENGTH_CHECK(write_class_of_dev);
1883
1884 memcpy(hci->device.class, PARAM(write_class_of_dev, dev_class),
1885 sizeof(PARAM(write_class_of_dev, dev_class)));
1886 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1887 break;
1888
1889 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_VOICE_SETTING):
1890 bt_hci_event_complete_voice_setting(hci);
1891 break;
1892
1893 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_VOICE_SETTING):
1894 LENGTH_CHECK(write_voice_setting);
1895
1896 hci->voice_setting = PARAM(write_voice_setting, voice_setting);
1897 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1898 break;
1899
1900 case cmd_opcode_pack(OGF_HOST_CTL, OCF_HOST_NUMBER_OF_COMPLETED_PACKETS):
1901 if (length < data[0] * 2 + 1)
1902 goto short_hci;
1903
1904 for (i = 0; i < data[0]; i ++)
1905 if (bt_hci_handle_bad(hci,
1906 data[i * 2 + 1] | (data[i * 2 + 2] << 8)))
1907 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1908 break;
1909
1910 case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_INQUIRY_MODE):
1911 /* Only if (local_features[3] & 0x40) && (local_commands[12] & 0x40)
1912 * else
1913 * goto unknown_command */
1914 bt_hci_event_complete_read_inquiry_mode(hci);
1915 break;
1916
1917 case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_INQUIRY_MODE):
1918 /* Only if (local_features[3] & 0x40) && (local_commands[12] & 0x80)
1919 * else
1920 * goto unknown_command */
1921 LENGTH_CHECK(write_inquiry_mode);
1922
1923 if (PARAM(write_inquiry_mode, mode) > 0x01) {
1924 bt_hci_event_complete_status(hci, HCI_INVALID_PARAMETERS);
1925 break;
1926 }
1927
1928 hci->lm.inquiry_mode = PARAM(write_inquiry_mode, mode);
1929 bt_hci_event_complete_status(hci, HCI_SUCCESS);
1930 break;
1931
1932 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_LOCAL_VERSION):
1933 bt_hci_read_local_version_rp(hci);
1934 break;
1935
1936 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_LOCAL_COMMANDS):
1937 bt_hci_read_local_commands_rp(hci);
1938 break;
1939
1940 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_LOCAL_FEATURES):
1941 bt_hci_read_local_features_rp(hci);
1942 break;
1943
1944 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_LOCAL_EXT_FEATURES):
1945 LENGTH_CHECK(read_local_ext_features);
1946
1947 bt_hci_read_local_ext_features_rp(hci,
1948 PARAM(read_local_ext_features, page_num));
1949 break;
1950
1951 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_BUFFER_SIZE):
1952 bt_hci_read_buffer_size_rp(hci);
1953 break;
1954
1955 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_COUNTRY_CODE):
1956 bt_hci_read_country_code_rp(hci);
1957 break;
1958
1959 case cmd_opcode_pack(OGF_INFO_PARAM, OCF_READ_BD_ADDR):
1960 bt_hci_read_bd_addr_rp(hci);
1961 break;
1962
1963 case cmd_opcode_pack(OGF_STATUS_PARAM, OCF_READ_LINK_QUALITY):
1964 LENGTH_CHECK(read_link_quality);
1965
1966 bt_hci_link_quality_rp(hci, PARAMHANDLE(read_link_quality));
1967 break;
1968
1969 default:
1970 bt_hci_event_status(hci, HCI_UNKNOWN_COMMAND);
1971 break;
1972
1973 short_hci:
1974 fprintf(stderr, "%s: HCI packet too short (%iB)\n",
1975 __FUNCTION__, length);
1976 bt_hci_event_status(hci, HCI_INVALID_PARAMETERS);
1977 break;
1978 }
1979 }
1980
1981 /* We could perform fragmentation here, we can't do "recombination" because
1982 * at this layer the length of the payload is not know ahead, so we only
1983 * know that a packet contained the last fragment of the SDU when the next
1984 * SDU starts. */
1985 static inline void bt_hci_lmp_acl_data(struct bt_hci_s *hci, uint16_t handle,
1986 const uint8_t *data, int start, int len)
1987 {
1988 struct hci_acl_hdr *pkt = (void *) hci->acl_buf;
1989
1990 /* TODO: packet flags */
1991 /* TODO: avoid memcpy'ing */
1992
1993 if (len + HCI_ACL_HDR_SIZE > sizeof(hci->acl_buf)) {
1994 fprintf(stderr, "%s: can't take ACL packets %i bytes long\n",
1995 __FUNCTION__, len);
1996 return;
1997 }
1998 memcpy(hci->acl_buf + HCI_ACL_HDR_SIZE, data, len);
1999
2000 pkt->handle = cpu_to_le16(
2001 acl_handle_pack(handle, start ? ACL_START : ACL_CONT));
2002 pkt->dlen = cpu_to_le16(len);
2003 hci->info.acl_recv(hci->info.opaque,
2004 hci->acl_buf, len + HCI_ACL_HDR_SIZE);
2005 }
2006
2007 static void bt_hci_lmp_acl_data_slave(struct bt_link_s *btlink,
2008 const uint8_t *data, int start, int len)
2009 {
2010 struct bt_hci_link_s *link = (struct bt_hci_link_s *) btlink;
2011
2012 bt_hci_lmp_acl_data(hci_from_device(btlink->slave),
2013 link->handle, data, start, len);
2014 }
2015
2016 static void bt_hci_lmp_acl_data_host(struct bt_link_s *link,
2017 const uint8_t *data, int start, int len)
2018 {
2019 bt_hci_lmp_acl_data(hci_from_device(link->host),
2020 link->handle, data, start, len);
2021 }
2022
2023 static void bt_submit_acl(struct HCIInfo *info,
2024 const uint8_t *data, int length)
2025 {
2026 struct bt_hci_s *hci = hci_from_info(info);
2027 uint16_t handle;
2028 int datalen, flags;
2029 struct bt_link_s *link;
2030
2031 if (length < HCI_ACL_HDR_SIZE) {
2032 fprintf(stderr, "%s: ACL packet too short (%iB)\n",
2033 __FUNCTION__, length);
2034 return;
2035 }
2036
2037 handle = acl_handle((data[1] << 8) | data[0]);
2038 flags = acl_flags((data[1] << 8) | data[0]);
2039 datalen = (data[3] << 8) | data[2];
2040 data += HCI_ACL_HDR_SIZE;
2041 length -= HCI_ACL_HDR_SIZE;
2042
2043 if (bt_hci_handle_bad(hci, handle)) {
2044 fprintf(stderr, "%s: invalid ACL handle %03x\n",
2045 __FUNCTION__, handle);
2046 /* TODO: signal an error */
2047 return;
2048 }
2049 handle &= ~HCI_HANDLE_OFFSET;
2050
2051 if (datalen > length) {
2052 fprintf(stderr, "%s: ACL packet too short (%iB < %iB)\n",
2053 __FUNCTION__, length, datalen);
2054 return;
2055 }
2056
2057 link = hci->lm.handle[handle].link;
2058
2059 if ((flags & ~3) == ACL_ACTIVE_BCAST) {
2060 if (!hci->asb_handle)
2061 hci->asb_handle = handle;
2062 else if (handle != hci->asb_handle) {
2063 fprintf(stderr, "%s: Bad handle %03x in Active Slave Broadcast\n",
2064 __FUNCTION__, handle);
2065 /* TODO: signal an error */
2066 return;
2067 }
2068
2069 /* TODO */
2070 }
2071
2072 if ((flags & ~3) == ACL_PICO_BCAST) {
2073 if (!hci->psb_handle)
2074 hci->psb_handle = handle;
2075 else if (handle != hci->psb_handle) {
2076 fprintf(stderr, "%s: Bad handle %03x in Parked Slave Broadcast\n",
2077 __FUNCTION__, handle);
2078 /* TODO: signal an error */
2079 return;
2080 }
2081
2082 /* TODO */
2083 }
2084
2085 /* TODO: increase counter and send EVT_NUM_COMP_PKTS */
2086 bt_hci_event_num_comp_pkts(hci, handle | HCI_HANDLE_OFFSET, 1);
2087
2088 /* Do this last as it can trigger further events even in this HCI */
2089 hci->lm.handle[handle].lmp_acl_data(link, data,
2090 (flags & 3) == ACL_START, length);
2091 }
2092
2093 static void bt_submit_sco(struct HCIInfo *info,
2094 const uint8_t *data, int length)
2095 {
2096 struct bt_hci_s *hci = hci_from_info(info);
2097 uint16_t handle;
2098 int datalen;
2099
2100 if (length < 3)
2101 return;
2102
2103 handle = acl_handle((data[1] << 8) | data[0]);
2104 datalen = data[2];
2105 length -= 3;
2106
2107 if (bt_hci_handle_bad(hci, handle)) {
2108 fprintf(stderr, "%s: invalid SCO handle %03x\n",
2109 __FUNCTION__, handle);
2110 return;
2111 }
2112
2113 if (datalen > length) {
2114 fprintf(stderr, "%s: SCO packet too short (%iB < %iB)\n",
2115 __FUNCTION__, length, datalen);
2116 return;
2117 }
2118
2119 /* TODO */
2120
2121 /* TODO: increase counter and send EVT_NUM_COMP_PKTS if synchronous
2122 * Flow Control is enabled.
2123 * (See Read/Write_Synchronous_Flow_Control_Enable on page 513 and
2124 * page 514.) */
2125 }
2126
2127 static uint8_t *bt_hci_evt_packet(void *opaque)
2128 {
2129 /* TODO: allocate a packet from upper layer */
2130 struct bt_hci_s *s = opaque;
2131
2132 return s->evt_buf;
2133 }
2134
2135 static void bt_hci_evt_submit(void *opaque, int len)
2136 {
2137 /* TODO: notify upper layer */
2138 struct bt_hci_s *s = opaque;
2139
2140 s->info.evt_recv(s->info.opaque, s->evt_buf, len);
2141 }
2142
2143 static int bt_hci_bdaddr_set(struct HCIInfo *info, const uint8_t *bd_addr)
2144 {
2145 struct bt_hci_s *hci = hci_from_info(info);
2146
2147 bacpy(&hci->device.bd_addr, (const bdaddr_t *) bd_addr);
2148 return 0;
2149 }
2150
2151 static void bt_hci_done(struct HCIInfo *info);
2152 static void bt_hci_destroy(struct bt_device_s *dev)
2153 {
2154 struct bt_hci_s *hci = hci_from_device(dev);
2155
2156 bt_hci_done(&hci->info);
2157 }
2158
2159 struct HCIInfo *bt_new_hci(struct bt_scatternet_s *net)
2160 {
2161 struct bt_hci_s *s = g_malloc0(sizeof(struct bt_hci_s));
2162
2163 s->lm.inquiry_done = timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_inquiry_done, s);
2164 s->lm.inquiry_next = timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_inquiry_next, s);
2165 s->conn_accept_timer =
2166 timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_conn_accept_timeout, s);
2167
2168 s->evt_packet = bt_hci_evt_packet;
2169 s->evt_submit = bt_hci_evt_submit;
2170 s->opaque = s;
2171
2172 bt_device_init(&s->device, net);
2173 s->device.lmp_connection_request = bt_hci_lmp_connection_request;
2174 s->device.lmp_connection_complete = bt_hci_lmp_connection_complete;
2175 s->device.lmp_disconnect_master = bt_hci_lmp_disconnect_host;
2176 s->device.lmp_disconnect_slave = bt_hci_lmp_disconnect_slave;
2177 s->device.lmp_acl_data = bt_hci_lmp_acl_data_slave;
2178 s->device.lmp_acl_resp = bt_hci_lmp_acl_data_host;
2179 s->device.lmp_mode_change = bt_hci_lmp_mode_change_slave;
2180
2181 /* Keep updated! */
2182 /* Also keep in sync with supported commands bitmask in
2183 * bt_hci_read_local_commands_rp */
2184 s->device.lmp_caps = 0x8000199b7e85355fll;
2185
2186 bt_hci_reset(s);
2187
2188 s->info.cmd_send = bt_submit_hci;
2189 s->info.sco_send = bt_submit_sco;
2190 s->info.acl_send = bt_submit_acl;
2191 s->info.bdaddr_set = bt_hci_bdaddr_set;
2192
2193 s->device.handle_destroy = bt_hci_destroy;
2194
2195 error_setg(&s->replay_blocker, QERR_REPLAY_NOT_SUPPORTED, "-bt hci");
2196 replay_add_blocker(s->replay_blocker);
2197
2198 return &s->info;
2199 }
2200
2201 struct HCIInfo *hci_init(const char *str)
2202 {
2203 char *endp;
2204 struct bt_scatternet_s *vlan = 0;
2205
2206 if (!strcmp(str, "null"))
2207 /* null */
2208 return &null_hci;
2209 else if (!strncmp(str, "host", 4) && (str[4] == '\0' || str[4] == ':'))
2210 /* host[:hciN] */
2211 return bt_host_hci(str[4] ? str + 5 : "hci0");
2212 else if (!strncmp(str, "hci", 3)) {
2213 /* hci[,vlan=n] */
2214 if (str[3]) {
2215 if (!strncmp(str + 3, ",vlan=", 6)) {
2216 vlan = qemu_find_bt_vlan(strtol(str + 9, &endp, 0));
2217 if (*endp)
2218 vlan = 0;
2219 }
2220 } else
2221 vlan = qemu_find_bt_vlan(0);
2222 if (vlan)
2223 return bt_new_hci(vlan);
2224 }
2225
2226 fprintf(stderr, "qemu: Unknown bluetooth HCI `%s'.\n", str);
2227
2228 return 0;
2229 }
2230
2231 static void bt_hci_done(struct HCIInfo *info)
2232 {
2233 struct bt_hci_s *hci = hci_from_info(info);
2234 int handle;
2235
2236 bt_device_done(&hci->device);
2237
2238 g_free((void *) hci->device.lmp_name);
2239
2240 /* Be gentle and send DISCONNECT to all connected peers and those
2241 * currently waiting for us to accept or reject a connection request.
2242 * This frees the links. */
2243 if (hci->conn_req_host) {
2244 bt_hci_connection_reject(hci,
2245 hci->conn_req_host, HCI_OE_POWER_OFF);
2246 return;
2247 }
2248
2249 for (handle = HCI_HANDLE_OFFSET;
2250 handle < (HCI_HANDLE_OFFSET | HCI_HANDLES_MAX); handle ++)
2251 if (!bt_hci_handle_bad(hci, handle))
2252 bt_hci_disconnect(hci, handle, HCI_OE_POWER_OFF);
2253
2254 /* TODO: this is not enough actually, there may be slaves from whom
2255 * we have requested a connection who will soon (or not) respond with
2256 * an accept or a reject, so we should also check if hci->lm.connecting
2257 * is non-zero and if so, avoid freeing the hci but otherwise disappear
2258 * from all qemu social life (e.g. stop scanning and request to be
2259 * removed from s->device.net) and arrange for
2260 * s->device.lmp_connection_complete to free the remaining bits once
2261 * hci->lm.awaiting_bdaddr[] is empty. */
2262
2263 timer_free(hci->lm.inquiry_done);
2264 timer_free(hci->lm.inquiry_next);
2265 timer_free(hci->conn_accept_timer);
2266
2267 g_free(hci);
2268 }
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