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s390x: introduce 4.0 compat machine
[qemu.git] / hw / bt / hci.c
blobc6b2cc1d487d664cd3d2df17691aedf57a6a4c01
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 "qemu/error-report.h"
23 #include "qapi/error.h"
24 #include "qemu-common.h"
25 #include "qemu/timer.h"
26 #include "hw/usb.h"
27 #include "sysemu/bt.h"
28 #include "hw/bt.h"
29 #include "qapi/qmp/qerror.h"
30 #include "sysemu/replay.h"
31 #include "qemu/cutils.h"
32
33 struct bt_hci_s {
34 uint8_t *(*evt_packet)(void *opaque);
35 void (*evt_submit)(void *opaque, int len);
36 void *opaque;
37 uint8_t evt_buf[256];
38
39 uint8_t acl_buf[4096];
40 int acl_len;
41
42 uint16_t asb_handle;
43 uint16_t psb_handle;
44
45 int last_cmd; /* Note: Always little-endian */
46
47 struct bt_device_s *conn_req_host;
48
49 struct {
50 int inquire;
51 int periodic;
52 int responses_left;
53 int responses;
54 QEMUTimer *inquiry_done;
55 QEMUTimer *inquiry_next;
56 int inquiry_length;
57 int inquiry_period;
58 int inquiry_mode;
59
60 #define HCI_HANDLE_OFFSET 0x20
61 #define HCI_HANDLES_MAX 0x10
62 struct bt_hci_master_link_s {
63 struct bt_link_s *link;
64 void (*lmp_acl_data)(struct bt_link_s *link,
65 const uint8_t *data, int start, int len);
66 QEMUTimer *acl_mode_timer;
67 } handle[HCI_HANDLES_MAX];
68 uint32_t role_bmp;
69 int last_handle;
70 int connecting;
71 bdaddr_t awaiting_bdaddr[HCI_HANDLES_MAX];
72 } lm;
73
74 uint8_t event_mask[8];
75 uint16_t voice_setting; /* Notw: Always little-endian */
76 uint16_t conn_accept_tout;
77 QEMUTimer *conn_accept_timer;
78
79 struct HCIInfo info;
80 struct bt_device_s device;
81
82 Error *replay_blocker;
83 };
84
85 #define DEFAULT_RSSI_DBM 20
86
87 #define hci_from_info(ptr) container_of((ptr), struct bt_hci_s, info)
88 #define hci_from_device(ptr) container_of((ptr), struct bt_hci_s, device)
89
90 struct bt_hci_link_s {
91 struct bt_link_s btlink;
92 uint16_t handle; /* Local */
93 };
94
95 /* LMP layer emulation */
96 #if 0
97 static void bt_submit_lmp(struct bt_device_s *bt, int length, uint8_t *data)
98 {
99 int resp, resplen, error, op, tr;
100 uint8_t respdata[17];
101
102 if (length < 1)
103 return;
104
105 tr = *data & 1;
106 op = *(data ++) >> 1;
107 resp = LMP_ACCEPTED;
108 resplen = 2;
109 respdata[1] = op;
110 error = 0;
111 length --;
112
113 if (op >= 0x7c) { /* Extended opcode */
114 op |= *(data ++) << 8;
115 resp = LMP_ACCEPTED_EXT;
116 resplen = 4;
117 respdata[0] = op >> 8;
118 respdata[1] = op & 0xff;
119 length --;
120 }
121
122 switch (op) {
123 case LMP_ACCEPTED:
124 /* data[0] Op code
125 */
126 if (length < 1) {
127 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
128 goto not_accepted;
129 }
130 resp = 0;
131 break;
132
133 case LMP_ACCEPTED_EXT:
134 /* data[0] Escape op code
135 * data[1] Extended op code
136 */
137 if (length < 2) {
138 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
139 goto not_accepted;
140 }
141 resp = 0;
142 break;
143
144 case LMP_NOT_ACCEPTED:
145 /* data[0] Op code
146 * data[1] Error code
147 */
148 if (length < 2) {
149 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
150 goto not_accepted;
151 }
152 resp = 0;
153 break;
154
155 case LMP_NOT_ACCEPTED_EXT:
156 /* data[0] Op code
157 * data[1] Extended op code
158 * data[2] Error code
159 */
160 if (length < 3) {
161 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
162 goto not_accepted;
163 }
164 resp = 0;
165 break;
166
167 case LMP_HOST_CONNECTION_REQ:
168 break;
169
170 case LMP_SETUP_COMPLETE:
171 resp = LMP_SETUP_COMPLETE;
172 resplen = 1;
173 bt->setup = 1;
174 break;
175
176 case LMP_DETACH:
177 /* data[0] Error code
178 */
179 if (length < 1) {
180 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
181 goto not_accepted;
182 }
183 bt->setup = 0;
184 resp = 0;
185 break;
186
187 case LMP_SUPERVISION_TIMEOUT:
188 /* data[0,1] Supervision timeout
189 */
190 if (length < 2) {
191 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
192 goto not_accepted;
193 }
194 resp = 0;
195 break;
196
197 case LMP_QUALITY_OF_SERVICE:
198 resp = 0;
199 /* Fall through */
200 case LMP_QOS_REQ:
201 /* data[0,1] Poll interval
202 * data[2] N(BC)
203 */
204 if (length < 3) {
205 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
206 goto not_accepted;
207 }
208 break;
209
210 case LMP_MAX_SLOT:
211 resp = 0;
212 /* Fall through */
213 case LMP_MAX_SLOT_REQ:
214 /* data[0] Max slots
215 */
216 if (length < 1) {
217 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
218 goto not_accepted;
219 }
220 break;
221
222 case LMP_AU_RAND:
223 case LMP_IN_RAND:
224 case LMP_COMB_KEY:
225 /* data[0-15] Random number
226 */
227 if (length < 16) {
228 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
229 goto not_accepted;
230 }
231 if (op == LMP_AU_RAND) {
232 if (bt->key_present) {
233 resp = LMP_SRES;
234 resplen = 5;
235 /* XXX: [Part H] Section 6.1 on page 801 */
236 } else {
237 error = HCI_PIN_OR_KEY_MISSING;
238 goto not_accepted;
239 }
240 } else if (op == LMP_IN_RAND) {
241 error = HCI_PAIRING_NOT_ALLOWED;
242 goto not_accepted;
243 } else {
244 /* XXX: [Part H] Section 3.2 on page 779 */
245 resp = LMP_UNIT_KEY;
246 resplen = 17;
247 memcpy(respdata + 1, bt->key, 16);
248
249 error = HCI_UNIT_LINK_KEY_USED;
250 goto not_accepted;
251 }
252 break;
253
254 case LMP_UNIT_KEY:
255 /* data[0-15] Key
256 */
257 if (length < 16) {
258 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
259 goto not_accepted;
260 }
261 memcpy(bt->key, data, 16);
262 bt->key_present = 1;
263 break;
264
265 case LMP_SRES:
266 /* data[0-3] Authentication response
267 */
268 if (length < 4) {
269 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
270 goto not_accepted;
271 }
272 break;
273
274 case LMP_CLKOFFSET_REQ:
275 resp = LMP_CLKOFFSET_RES;
276 resplen = 3;
277 respdata[1] = 0x33;
278 respdata[2] = 0x33;
279 break;
280
281 case LMP_CLKOFFSET_RES:
282 /* data[0,1] Clock offset
283 * (Slave to master only)
284 */
285 if (length < 2) {
286 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
287 goto not_accepted;
288 }
289 break;
290
291 case LMP_VERSION_REQ:
292 case LMP_VERSION_RES:
293 /* data[0] VersNr
294 * data[1,2] CompId
295 * data[3,4] SubVersNr
296 */
297 if (length < 5) {
298 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
299 goto not_accepted;
300 }
301 if (op == LMP_VERSION_REQ) {
302 resp = LMP_VERSION_RES;
303 resplen = 6;
304 respdata[1] = 0x20;
305 respdata[2] = 0xff;
306 respdata[3] = 0xff;
307 respdata[4] = 0xff;
308 respdata[5] = 0xff;
309 } else
310 resp = 0;
311 break;
312
313 case LMP_FEATURES_REQ:
314 case LMP_FEATURES_RES:
315 /* data[0-7] Features
316 */
317 if (length < 8) {
318 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
319 goto not_accepted;
320 }
321 if (op == LMP_FEATURES_REQ) {
322 resp = LMP_FEATURES_RES;
323 resplen = 9;
324 respdata[1] = (bt->lmp_caps >> 0) & 0xff;
325 respdata[2] = (bt->lmp_caps >> 8) & 0xff;
326 respdata[3] = (bt->lmp_caps >> 16) & 0xff;
327 respdata[4] = (bt->lmp_caps >> 24) & 0xff;
328 respdata[5] = (bt->lmp_caps >> 32) & 0xff;
329 respdata[6] = (bt->lmp_caps >> 40) & 0xff;
330 respdata[7] = (bt->lmp_caps >> 48) & 0xff;
331 respdata[8] = (bt->lmp_caps >> 56) & 0xff;
332 } else
333 resp = 0;
334 break;
335
336 case LMP_NAME_REQ:
337 /* data[0] Name offset
338 */
339 if (length < 1) {
340 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
341 goto not_accepted;
342 }
343 resp = LMP_NAME_RES;
344 resplen = 17;
345 respdata[1] = data[0];
346 respdata[2] = strlen(bt->lmp_name);
347 memset(respdata + 3, 0x00, 14);
348 if (respdata[2] > respdata[1])
349 memcpy(respdata + 3, bt->lmp_name + respdata[1],
350 respdata[2] - respdata[1]);
351 break;
352
353 case LMP_NAME_RES:
354 /* data[0] Name offset
355 * data[1] Name length
356 * data[2-15] Name fragment
357 */
358 if (length < 16) {
359 error = HCI_UNSUPPORTED_LMP_PARAMETER_VALUE;
360 goto not_accepted;
361 }
362 resp = 0;
363 break;
364
365 default:
366 error = HCI_UNKNOWN_LMP_PDU;
367 /* Fall through */
368 not_accepted:
369 if (op >> 8) {
370 resp = LMP_NOT_ACCEPTED_EXT;
371 resplen = 5;
372 respdata[0] = op >> 8;
373 respdata[1] = op & 0xff;
374 respdata[2] = error;
375 } else {
376 resp = LMP_NOT_ACCEPTED;
377 resplen = 3;
378 respdata[0] = op & 0xff;
379 respdata[1] = error;
380 }
381 }
382
383 if (resp == 0)
384 return;
385
386 if (resp >> 8) {
387 respdata[0] = resp >> 8;
388 respdata[1] = resp & 0xff;
389 } else
390 respdata[0] = resp & 0xff;
391
392 respdata[0] <<= 1;
393 respdata[0] |= tr;
394 }
395
396 static void bt_submit_raw_acl(struct bt_piconet_s *net, int length, uint8_t *data)
397 {
398 struct bt_device_s *slave;
399 if (length < 1)
400 return;
401
402 slave = 0;
403 #if 0
404 slave = net->slave;
405 #endif
406
407 switch (data[0] & 3) {
408 case LLID_ACLC:
409 bt_submit_lmp(slave, length - 1, data + 1);
410 break;
411 case LLID_ACLU_START:
412 #if 0
413 bt_sumbit_l2cap(slave, length - 1, data + 1, (data[0] >> 2) & 1);
414 breka;
415 #endif
416 default:
417 case LLID_ACLU_CONT:
418 break;
419 }
420 }
421 #endif
422
423 /* HCI layer emulation */
424
425 /* Note: we could ignore endianness because unswapped handles will still
426 * be valid as connection identifiers for the guest - they don't have to
427 * be continuously allocated. We do it though, to preserve similar
428 * behaviour between hosts. Some things, like the BD_ADDR cannot be
429 * preserved though (for example if a real hci is used). */
430 #define HNDL(raw) cpu_to_le16(raw)
431
432 static const uint8_t bt_event_reserved_mask[8] = {
433 0xff, 0x9f, 0xfb, 0xff, 0x07, 0x18, 0x00, 0x00,
434 };
435
436
437 static void null_hci_send(struct HCIInfo *hci, const uint8_t *data, int len)
438 {
439 }
440
441 static int null_hci_addr_set(struct HCIInfo *hci, const uint8_t *bd_addr)
442 {
443 return -ENOTSUP;
444 }
445
446 struct HCIInfo null_hci = {
447 .cmd_send = null_hci_send,
448 .sco_send = null_hci_send,
449 .acl_send = null_hci_send,
450 .bdaddr_set = null_hci_addr_set,
451 };
452
453
454 static inline uint8_t *bt_hci_event_start(struct bt_hci_s *hci,
455 int evt, int len)
456 {
457 uint8_t *packet, mask;
458 int mask_byte;
459
460 if (len > 255) {
461 error_report("%s: HCI event params too long (%ib)", __func__, 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 error_report("%s: bad inquiry mode %02x", __func__,
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", __func__);
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", __func__);
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 error_report("%s: HCI packet too short (%iB)", __func__, 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 error_report("%s: can't take ACL packets %i bytes long",
1994 __func__, 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 error_report("%s: ACL packet too short (%iB)", __func__, length);
2032 return;
2033 }
2034
2035 handle = acl_handle((data[1] << 8) | data[0]);
2036 flags = acl_flags((data[1] << 8) | data[0]);
2037 datalen = (data[3] << 8) | data[2];
2038 data += HCI_ACL_HDR_SIZE;
2039 length -= HCI_ACL_HDR_SIZE;
2040
2041 if (bt_hci_handle_bad(hci, handle)) {
2042 error_report("%s: invalid ACL handle %03x", __func__, handle);
2043 /* TODO: signal an error */
2044 return;
2045 }
2046 handle &= ~HCI_HANDLE_OFFSET;
2047
2048 if (datalen > length) {
2049 error_report("%s: ACL packet too short (%iB < %iB)",
2050 __func__, length, datalen);
2051 return;
2052 }
2053
2054 link = hci->lm.handle[handle].link;
2055
2056 if ((flags & ~3) == ACL_ACTIVE_BCAST) {
2057 if (!hci->asb_handle)
2058 hci->asb_handle = handle;
2059 else if (handle != hci->asb_handle) {
2060 error_report("%s: Bad handle %03x in Active Slave Broadcast",
2061 __func__, handle);
2062 /* TODO: signal an error */
2063 return;
2064 }
2065
2066 /* TODO */
2067 }
2068
2069 if ((flags & ~3) == ACL_PICO_BCAST) {
2070 if (!hci->psb_handle)
2071 hci->psb_handle = handle;
2072 else if (handle != hci->psb_handle) {
2073 error_report("%s: Bad handle %03x in Parked Slave Broadcast",
2074 __func__, handle);
2075 /* TODO: signal an error */
2076 return;
2077 }
2078
2079 /* TODO */
2080 }
2081
2082 /* TODO: increase counter and send EVT_NUM_COMP_PKTS */
2083 bt_hci_event_num_comp_pkts(hci, handle | HCI_HANDLE_OFFSET, 1);
2084
2085 /* Do this last as it can trigger further events even in this HCI */
2086 hci->lm.handle[handle].lmp_acl_data(link, data,
2087 (flags & 3) == ACL_START, length);
2088 }
2089
2090 static void bt_submit_sco(struct HCIInfo *info,
2091 const uint8_t *data, int length)
2092 {
2093 struct bt_hci_s *hci = hci_from_info(info);
2094 uint16_t handle;
2095 int datalen;
2096
2097 if (length < 3)
2098 return;
2099
2100 handle = acl_handle((data[1] << 8) | data[0]);
2101 datalen = data[2];
2102 length -= 3;
2103
2104 if (bt_hci_handle_bad(hci, handle)) {
2105 error_report("%s: invalid SCO handle %03x", __func__, handle);
2106 return;
2107 }
2108
2109 if (datalen > length) {
2110 error_report("%s: SCO packet too short (%iB < %iB)",
2111 __func__, length, datalen);
2112 return;
2113 }
2114
2115 /* TODO */
2116
2117 /* TODO: increase counter and send EVT_NUM_COMP_PKTS if synchronous
2118 * Flow Control is enabled.
2119 * (See Read/Write_Synchronous_Flow_Control_Enable on page 513 and
2120 * page 514.) */
2121 }
2122
2123 static uint8_t *bt_hci_evt_packet(void *opaque)
2124 {
2125 /* TODO: allocate a packet from upper layer */
2126 struct bt_hci_s *s = opaque;
2127
2128 return s->evt_buf;
2129 }
2130
2131 static void bt_hci_evt_submit(void *opaque, int len)
2132 {
2133 /* TODO: notify upper layer */
2134 struct bt_hci_s *s = opaque;
2135
2136 s->info.evt_recv(s->info.opaque, s->evt_buf, len);
2137 }
2138
2139 static int bt_hci_bdaddr_set(struct HCIInfo *info, const uint8_t *bd_addr)
2140 {
2141 struct bt_hci_s *hci = hci_from_info(info);
2142
2143 bacpy(&hci->device.bd_addr, (const bdaddr_t *) bd_addr);
2144 return 0;
2145 }
2146
2147 static void bt_hci_done(struct HCIInfo *info);
2148 static void bt_hci_destroy(struct bt_device_s *dev)
2149 {
2150 struct bt_hci_s *hci = hci_from_device(dev);
2151
2152 bt_hci_done(&hci->info);
2153 }
2154
2155 struct HCIInfo *bt_new_hci(struct bt_scatternet_s *net)
2156 {
2157 struct bt_hci_s *s = g_malloc0(sizeof(struct bt_hci_s));
2158
2159 s->lm.inquiry_done = timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_inquiry_done, s);
2160 s->lm.inquiry_next = timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_inquiry_next, s);
2161 s->conn_accept_timer =
2162 timer_new_ns(QEMU_CLOCK_VIRTUAL, bt_hci_conn_accept_timeout, s);
2163
2164 s->evt_packet = bt_hci_evt_packet;
2165 s->evt_submit = bt_hci_evt_submit;
2166 s->opaque = s;
2167
2168 bt_device_init(&s->device, net);
2169 s->device.lmp_connection_request = bt_hci_lmp_connection_request;
2170 s->device.lmp_connection_complete = bt_hci_lmp_connection_complete;
2171 s->device.lmp_disconnect_master = bt_hci_lmp_disconnect_host;
2172 s->device.lmp_disconnect_slave = bt_hci_lmp_disconnect_slave;
2173 s->device.lmp_acl_data = bt_hci_lmp_acl_data_slave;
2174 s->device.lmp_acl_resp = bt_hci_lmp_acl_data_host;
2175 s->device.lmp_mode_change = bt_hci_lmp_mode_change_slave;
2176
2177 /* Keep updated! */
2178 /* Also keep in sync with supported commands bitmask in
2179 * bt_hci_read_local_commands_rp */
2180 s->device.lmp_caps = 0x8000199b7e85355fll;
2181
2182 bt_hci_reset(s);
2183
2184 s->info.cmd_send = bt_submit_hci;
2185 s->info.sco_send = bt_submit_sco;
2186 s->info.acl_send = bt_submit_acl;
2187 s->info.bdaddr_set = bt_hci_bdaddr_set;
2188
2189 s->device.handle_destroy = bt_hci_destroy;
2190
2191 error_setg(&s->replay_blocker, QERR_REPLAY_NOT_SUPPORTED, "-bt hci");
2192 replay_add_blocker(s->replay_blocker);
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 error_report("Unknown bluetooth HCI `%s'.", 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 g_free((void *) hci->device.lmp_name);
2235
2236 /* Be gentle and send DISCONNECT to all connected peers and those
2237 * currently waiting for us to accept or reject a connection request.
2238 * This frees the links. */
2239 if (hci->conn_req_host) {
2240 bt_hci_connection_reject(hci,
2241 hci->conn_req_host, HCI_OE_POWER_OFF);
2242 return;
2243 }
2244
2245 for (handle = HCI_HANDLE_OFFSET;
2246 handle < (HCI_HANDLE_OFFSET | HCI_HANDLES_MAX); handle ++)
2247 if (!bt_hci_handle_bad(hci, handle))
2248 bt_hci_disconnect(hci, handle, HCI_OE_POWER_OFF);
2249
2250 /* TODO: this is not enough actually, there may be slaves from whom
2251 * we have requested a connection who will soon (or not) respond with
2252 * an accept or a reject, so we should also check if hci->lm.connecting
2253 * is non-zero and if so, avoid freeing the hci but otherwise disappear
2254 * from all qemu social life (e.g. stop scanning and request to be
2255 * removed from s->device.net) and arrange for
2256 * s->device.lmp_connection_complete to free the remaining bits once
2257 * hci->lm.awaiting_bdaddr[] is empty. */
2258
2259 timer_free(hci->lm.inquiry_done);
2260 timer_free(hci->lm.inquiry_next);
2261 timer_free(hci->conn_accept_timer);
2262
2263 g_free(hci);
2264 }
QEmu