btsco.c revision 1.3
1 /* $NetBSD: btsco.c,v 1.3 2006/09/10 15:45:56 plunky Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Itronix Inc. 5 * All rights reserved. 6 * 7 * Written by Iain Hibbert for Itronix Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of Itronix Inc. may not be used to endorse 18 * or promote products derived from this software without specific 19 * prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: btsco.c,v 1.3 2006/09/10 15:45:56 plunky Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/audioio.h> 39 #include <sys/conf.h> 40 #include <sys/device.h> 41 #include <sys/fcntl.h> 42 #include <sys/kernel.h> 43 #include <sys/queue.h> 44 #include <sys/malloc.h> 45 #include <sys/mbuf.h> 46 #include <sys/proc.h> 47 #include <sys/systm.h> 48 49 #include <prop/proplib.h> 50 51 #include <netbt/bluetooth.h> 52 #include <netbt/rfcomm.h> 53 #include <netbt/sco.h> 54 55 #include <dev/audio_if.h> 56 #include <dev/auconv.h> 57 #include <dev/mulaw.h> 58 59 #include <dev/bluetooth/btdev.h> 60 #include <dev/bluetooth/btsco.h> 61 62 #undef DPRINTF 63 #undef DPRINTFN 64 65 #ifdef BTSCO_DEBUG 66 int btsco_debug = BTSCO_DEBUG; 67 #define DPRINTF(fmt, args...) do { \ 68 if (btsco_debug) \ 69 printf("%s: "fmt, __func__ , ##args); \ 70 } while (/* CONSTCOND */0) 71 72 #define DPRINTFN(n, fmt, args...) do { \ 73 if (btsco_debug > (n)) \ 74 printf("%s: "fmt, __func__ , ##args); \ 75 } while (/* CONSTCOND */0) 76 #else 77 #define DPRINTF(...) 78 #define DPRINTFN(...) 79 #endif 80 81 /***************************************************************************** 82 * 83 * Bluetooth SCO Audio device 84 */ 85 86 /* btsco softc */ 87 struct btsco_softc { 88 struct btdev sc_btdev; 89 uint16_t sc_flags; 90 91 struct device *sc_audio; /* MI audio device */ 92 void *sc_intr; /* interrupt cookie */ 93 94 /* Bluetooth */ 95 bdaddr_t sc_laddr; /* local address */ 96 bdaddr_t sc_raddr; /* remote address */ 97 uint16_t sc_state; /* link state */ 98 struct sco_pcb *sc_sco; /* SCO handle */ 99 struct sco_pcb *sc_sco_l; /* SCO listen handle */ 100 int sc_mtu; /* SCO mtu */ 101 uint8_t sc_channel; /* RFCOMM channel */ 102 int sc_err; /* stored error */ 103 104 /* Receive */ 105 int sc_rx_want; /* bytes wanted */ 106 uint8_t *sc_rx_block; /* receive block */ 107 void (*sc_rx_intr)(void *); /* callback */ 108 void *sc_rx_intrarg; /* callback arg */ 109 struct mbuf *sc_rx_mbuf; /* leftover mbuf */ 110 111 /* Transmit */ 112 int sc_tx_size; /* bytes to send */ 113 int sc_tx_pending; /* packets pending */ 114 uint8_t *sc_tx_block; /* transmit block */ 115 void (*sc_tx_intr)(void *); /* callback */ 116 void *sc_tx_intrarg; /* callback arg */ 117 void *sc_tx_buf; /* transmit buffer */ 118 int sc_tx_refcnt; /* buffer refcnt */ 119 120 /* mixer data */ 121 int sc_vgs; /* speaker volume */ 122 int sc_vgm; /* mic volume */ 123 }; 124 125 /* sc_state */ 126 #define BTSCO_CLOSED 0 127 #define BTSCO_WAIT_CONNECT 1 128 #define BTSCO_OPEN 2 129 130 /* sc_flags */ 131 #define BTSCO_LISTEN (1 << 1) 132 133 /* autoconf(9) glue */ 134 static int btsco_match(struct device *, struct cfdata *, void *); 135 static void btsco_attach(struct device *, struct device *, void *); 136 static int btsco_detach(struct device *, int); 137 138 CFATTACH_DECL(btsco, sizeof(struct btsco_softc), 139 btsco_match, btsco_attach, btsco_detach, NULL); 140 141 /* btdev identity matching */ 142 static int btsco_identify(struct btdev *, prop_dictionary_t); 143 144 /* audio(9) glue */ 145 static int btsco_open(void *, int); 146 static void btsco_close(void *); 147 static int btsco_query_encoding(void *, struct audio_encoding *); 148 static int btsco_set_params(void *, int, int, audio_params_t *, audio_params_t *, 149 stream_filter_list_t *, stream_filter_list_t *); 150 static int btsco_round_blocksize(void *, int, int, const audio_params_t *); 151 static int btsco_start_output(void *, void *, int, void (*)(void *), void *); 152 static int btsco_start_input(void *, void *, int, void (*)(void *), void *); 153 static int btsco_halt_output(void *); 154 static int btsco_halt_input(void *); 155 static int btsco_getdev(void *, struct audio_device *); 156 static int btsco_setfd(void *, int); 157 static int btsco_set_port(void *, mixer_ctrl_t *); 158 static int btsco_get_port(void *, mixer_ctrl_t *); 159 static int btsco_query_devinfo(void *, mixer_devinfo_t *); 160 static void *btsco_allocm(void *, int, size_t, struct malloc_type *, int); 161 static void btsco_freem(void *, void *, struct malloc_type *); 162 static int btsco_get_props(void *); 163 static int btsco_dev_ioctl(void *, u_long, caddr_t, int, struct lwp *); 164 165 static const struct audio_hw_if btsco_if = { 166 btsco_open, /* open */ 167 btsco_close, /* close */ 168 NULL, /* drain */ 169 btsco_query_encoding, /* query_encoding */ 170 btsco_set_params, /* set_params */ 171 btsco_round_blocksize, /* round_blocksize */ 172 NULL, /* commit_settings */ 173 NULL, /* init_output */ 174 NULL, /* init_input */ 175 btsco_start_output, /* start_output */ 176 btsco_start_input, /* start_input */ 177 btsco_halt_output, /* halt_output */ 178 btsco_halt_input, /* halt_input */ 179 NULL, /* speaker_ctl */ 180 btsco_getdev, /* getdev */ 181 btsco_setfd, /* setfd */ 182 btsco_set_port, /* set_port */ 183 btsco_get_port, /* get_port */ 184 btsco_query_devinfo, /* query_devinfo */ 185 btsco_allocm, /* allocm */ 186 btsco_freem, /* freem */ 187 NULL, /* round_buffersize */ 188 NULL, /* mappage */ 189 btsco_get_props, /* get_props */ 190 NULL, /* trigger_output */ 191 NULL, /* trigger_input */ 192 btsco_dev_ioctl, /* dev_ioctl */ 193 NULL, /* powerstate */ 194 }; 195 196 static const struct audio_device btsco_device = { 197 "Bluetooth Audio", 198 "", 199 "btsco" 200 }; 201 202 /* bluetooth(9) glue for SCO */ 203 static void btsco_sco_connecting(void *); 204 static void btsco_sco_connected(void *); 205 static void btsco_sco_disconnected(void *, int); 206 static void *btsco_sco_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *); 207 static void btsco_sco_complete(void *, int); 208 static void btsco_sco_input(void *, struct mbuf *); 209 210 static const struct btproto btsco_sco_proto = { 211 btsco_sco_connecting, 212 btsco_sco_connected, 213 btsco_sco_disconnected, 214 btsco_sco_newconn, 215 btsco_sco_complete, 216 btsco_sco_input, 217 }; 218 219 220 /***************************************************************************** 221 * 222 * btsco definitions 223 */ 224 225 /* 226 * btsco mixer class 227 */ 228 #define BTSCO_VGS 0 229 #define BTSCO_VGM 1 230 #define BTSCO_INPUT_CLASS 2 231 #define BTSCO_OUTPUT_CLASS 3 232 233 /* connect timeout */ 234 #define BTSCO_TIMEOUT (30 * hz) 235 236 /* misc btsco functions */ 237 static void btsco_extfree(struct mbuf *, caddr_t, size_t, void *); 238 static void btsco_intr(void *); 239 240 241 /***************************************************************************** 242 * 243 * btsco autoconf(9) routines 244 */ 245 246 static int 247 btsco_match(struct device *self, struct cfdata *cfdata, void *aux) 248 { 249 prop_dictionary_t dict = aux; 250 prop_object_t obj; 251 252 obj = prop_dictionary_get(dict, BTDEVtype); 253 return prop_string_equals_cstring(obj, "btsco"); 254 } 255 256 static void 257 btsco_attach(struct device *parent, struct device *self, void *aux) 258 { 259 struct btsco_softc *sc = (struct btsco_softc *)self; 260 prop_dictionary_t dict = aux; 261 prop_object_t obj; 262 263 /* 264 * Init softc 265 */ 266 sc->sc_vgs = 200; 267 sc->sc_vgm = 200; 268 sc->sc_state = BTSCO_CLOSED; 269 270 sc->sc_btdev.sc_identify = btsco_identify; 271 272 /* 273 * copy in our configuration info 274 */ 275 obj = prop_dictionary_get(dict, BTDEVladdr); 276 bdaddr_copy(&sc->sc_laddr, prop_data_data_nocopy(obj)); 277 278 obj = prop_dictionary_get(dict, BTDEVraddr); 279 bdaddr_copy(&sc->sc_raddr, prop_data_data_nocopy(obj)); 280 281 obj = prop_dictionary_get(dict, BTSCOlisten); 282 if (prop_bool_true(obj)) { 283 sc->sc_flags |= BTSCO_LISTEN; 284 aprint_verbose(" listen mode"); 285 } 286 287 obj = prop_dictionary_get(dict, BTSCOchannel); 288 if (prop_object_type(obj) != PROP_TYPE_NUMBER 289 || prop_number_integer_value(obj) < RFCOMM_CHANNEL_MIN 290 || prop_number_integer_value(obj) > RFCOMM_CHANNEL_MAX) { 291 aprint_error(" invalid %s", BTSCOchannel); 292 return; 293 } 294 sc->sc_channel = prop_number_integer_value(obj); 295 296 aprint_verbose(" channel %d", sc->sc_channel); 297 aprint_normal("\n"); 298 299 DPRINTF("sc=%p\n", sc); 300 301 /* 302 * set up transmit interrupt 303 */ 304 sc->sc_intr = softintr_establish(IPL_SOFTNET, btsco_intr, sc); 305 if (sc->sc_intr == NULL) { 306 aprint_error("%s: softintr_establish failed\n", 307 device_xname((struct device *)sc)); 308 return; 309 } 310 311 /* 312 * attach audio device 313 */ 314 sc->sc_audio = audio_attach_mi(&btsco_if, sc, (struct device *)sc); 315 if (sc->sc_audio == NULL) { 316 aprint_error("%s: audio_attach_mi failed\n", 317 device_xname((struct device *)sc)); 318 return; 319 } 320 } 321 322 static int 323 btsco_detach(struct device *self, int flags) 324 { 325 struct btsco_softc *sc = (struct btsco_softc *)self; 326 int s; 327 328 DPRINTF("sc=%p\n", sc); 329 330 if (sc->sc_sco != NULL) { 331 DPRINTF("sc_sco=%p\n", sc->sc_sco); 332 s = splsoftnet(); 333 sco_disconnect(sc->sc_sco, 0); 334 sco_detach(&sc->sc_sco); 335 sc->sc_sco = NULL; 336 splx(s); 337 } 338 339 if (sc->sc_sco_l != NULL) { 340 DPRINTF("sc_sco_l=%p\n", sc->sc_sco_l); 341 s = splsoftnet(); 342 sco_detach(&sc->sc_sco_l); 343 sc->sc_sco_l = NULL; 344 splx(s); 345 } 346 347 if (sc->sc_audio != NULL) { 348 DPRINTF("sc_audio=%p\n", sc->sc_audio); 349 config_detach(sc->sc_audio, flags); 350 sc->sc_audio = NULL; 351 } 352 353 if (sc->sc_intr != NULL) { 354 softintr_disestablish(sc->sc_intr); 355 sc->sc_intr = NULL; 356 } 357 358 if (sc->sc_rx_mbuf != NULL) { 359 m_freem(sc->sc_rx_mbuf); 360 sc->sc_rx_mbuf = NULL; 361 } 362 363 if (sc->sc_tx_refcnt > 0) { 364 printf("%s: tx_refcnt=%d!\n", 365 device_xname((struct device *)sc), sc->sc_tx_refcnt); 366 367 if ((flags & DETACH_FORCE) == 0) 368 return EAGAIN; 369 } 370 371 return 0; 372 } 373 374 /* 375 * btdev identity matching 376 */ 377 static int 378 btsco_identify(struct btdev *dev, prop_dictionary_t dict) 379 { 380 struct btsco_softc *sc = (struct btsco_softc *)dev; 381 prop_object_t obj; 382 383 obj = prop_dictionary_get(dict, BTDEVtype); 384 if (!prop_string_equals_cstring(obj, "btsco")) 385 return 0; 386 387 obj = prop_dictionary_get(dict, BTDEVladdr); 388 if (!prop_data_equals_data(obj, &sc->sc_laddr, sizeof(bdaddr_t))) 389 return 0; 390 391 obj = prop_dictionary_get(dict, BTDEVraddr); 392 if (!prop_data_equals_data(obj, &sc->sc_raddr, sizeof(bdaddr_t))) 393 return 0; 394 395 return 1; 396 } 397 398 /***************************************************************************** 399 * 400 * bluetooth(9) methods for SCO 401 * 402 * All these are called from Bluetooth Protocol code, in a soft 403 * interrupt context at IPL_SOFTNET. 404 */ 405 406 static void 407 btsco_sco_connecting(void *arg) 408 { 409 /* struct btsco_softc *sc = arg; */ 410 411 /* dont care */ 412 } 413 414 static void 415 btsco_sco_connected(void *arg) 416 { 417 struct btsco_softc *sc = arg; 418 419 DPRINTF("%s\n", device_xname((struct device *)sc)); 420 421 KASSERT(sc->sc_sco != NULL); 422 KASSERT(sc->sc_state == BTSCO_WAIT_CONNECT); 423 424 /* 425 * If we are listening, no more need 426 */ 427 if (sc->sc_sco_l != NULL) 428 sco_detach(&sc->sc_sco_l); 429 430 sc->sc_state = BTSCO_OPEN; 431 wakeup(sc); 432 } 433 434 static void 435 btsco_sco_disconnected(void *arg, int err) 436 { 437 struct btsco_softc *sc = arg; 438 int s; 439 440 DPRINTF("%s sc_state %d\n", 441 device_xname((struct device *)sc), sc->sc_state); 442 443 KASSERT(sc->sc_sco != NULL); 444 445 sc->sc_err = err; 446 sco_detach(&sc->sc_sco); 447 448 switch (sc->sc_state) { 449 case BTSCO_CLOSED: /* dont think this can happen */ 450 break; 451 452 case BTSCO_WAIT_CONNECT: /* connect failed */ 453 wakeup(sc); 454 break; 455 456 case BTSCO_OPEN: /* link lost */ 457 /* 458 * If IO is in progress, tell the audio driver that it 459 * has completed so that when it tries to send more, we 460 * can indicate an error. 461 */ 462 s = splaudio(); 463 if (sc->sc_tx_pending > 0) { 464 sc->sc_tx_pending = 0; 465 (*sc->sc_tx_intr)(sc->sc_tx_intrarg); 466 } 467 if (sc->sc_rx_want > 0) { 468 sc->sc_rx_want = 0; 469 (*sc->sc_rx_intr)(sc->sc_rx_intrarg); 470 } 471 splx(s); 472 break; 473 474 default: 475 UNKNOWN(sc->sc_state); 476 } 477 478 sc->sc_state = BTSCO_CLOSED; 479 } 480 481 static void * 482 btsco_sco_newconn(void *arg, struct sockaddr_bt *laddr, struct sockaddr_bt *raddr) 483 { 484 struct btsco_softc *sc = arg; 485 486 DPRINTF("%s\n", device_xname((struct device *)sc)); 487 if (bdaddr_same(&raddr->bt_bdaddr, &sc->sc_raddr) == 0 488 || sc->sc_state != BTSCO_WAIT_CONNECT 489 || sc->sc_sco != NULL) 490 return NULL; 491 492 sco_attach(&sc->sc_sco, &btsco_sco_proto, sc); 493 return sc->sc_sco; 494 } 495 496 static void 497 btsco_sco_complete(void *arg, int count) 498 { 499 struct btsco_softc *sc = arg; 500 int s; 501 502 DPRINTFN(10, "%s count %d\n", 503 device_xname((struct device *)sc), count); 504 505 s = splaudio(); 506 if (sc->sc_tx_pending > 0) { 507 sc->sc_tx_pending -= count; 508 if (sc->sc_tx_pending == 0) 509 (*sc->sc_tx_intr)(sc->sc_tx_intrarg); 510 } 511 splx(s); 512 } 513 514 static void 515 btsco_sco_input(void *arg, struct mbuf *m) 516 { 517 struct btsco_softc *sc = arg; 518 int len, s; 519 520 DPRINTFN(10, "%s len=%d\n", 521 device_xname((struct device *)sc), m->m_pkthdr.len); 522 523 s = splaudio(); 524 if (sc->sc_rx_want == 0) { 525 m_freem(m); 526 } else { 527 KASSERT(sc->sc_rx_intr != NULL); 528 KASSERT(sc->sc_rx_block != NULL); 529 530 len = MIN(sc->sc_rx_want, m->m_pkthdr.len); 531 m_copydata(m, 0, len, sc->sc_rx_block); 532 533 sc->sc_rx_want -= len; 534 sc->sc_rx_block += len; 535 536 if (len > m->m_pkthdr.len) { 537 if (sc->sc_rx_mbuf != NULL) 538 m_freem(sc->sc_rx_mbuf); 539 540 m_adj(m, len); 541 sc->sc_rx_mbuf = m; 542 } else { 543 m_freem(m); 544 } 545 546 if (sc->sc_rx_want == 0) 547 (*sc->sc_rx_intr)(sc->sc_rx_intrarg); 548 } 549 splx(s); 550 } 551 552 553 /***************************************************************************** 554 * 555 * audio(9) methods 556 * 557 */ 558 559 static int 560 btsco_open(void *hdl, int flags) 561 { 562 struct sockaddr_bt sa; 563 struct btsco_softc *sc = hdl; 564 int err, s, timo; 565 566 DPRINTF("%s flags 0x%x\n", 567 device_xname((struct device *)sc), flags); 568 /* flags FREAD & FWRITE? */ 569 570 if (sc->sc_sco != NULL || sc->sc_sco_l != NULL) 571 return EIO; 572 573 s = splsoftnet(); 574 575 memset(&sa, 0, sizeof(sa)); 576 sa.bt_len = sizeof(sa); 577 sa.bt_family = AF_BLUETOOTH; 578 bdaddr_copy(&sa.bt_bdaddr, &sc->sc_laddr); 579 580 if (sc->sc_flags & BTSCO_LISTEN) { 581 err = sco_attach(&sc->sc_sco_l, &btsco_sco_proto, sc); 582 if (err) 583 goto done; 584 585 err = sco_bind(sc->sc_sco_l, &sa); 586 if (err) { 587 sco_detach(&sc->sc_sco_l); 588 goto done; 589 } 590 591 err = sco_listen(sc->sc_sco_l); 592 if (err) { 593 sco_detach(&sc->sc_sco_l); 594 goto done; 595 } 596 597 timo = 0; /* no timeout */ 598 } else { 599 err = sco_attach(&sc->sc_sco, &btsco_sco_proto, sc); 600 if (err) 601 goto done; 602 603 err = sco_bind(sc->sc_sco, &sa); 604 if (err) { 605 sco_detach(&sc->sc_sco); 606 goto done; 607 } 608 609 bdaddr_copy(&sa.bt_bdaddr, &sc->sc_raddr); 610 err = sco_connect(sc->sc_sco, &sa); 611 if (err) { 612 sco_detach(&sc->sc_sco); 613 goto done; 614 } 615 616 timo = BTSCO_TIMEOUT; 617 } 618 619 sc->sc_state = BTSCO_WAIT_CONNECT; 620 while (err == 0 && sc->sc_state == BTSCO_WAIT_CONNECT) 621 err = tsleep(sc, PWAIT | PCATCH, "btsco", timo); 622 623 switch (sc->sc_state) { 624 case BTSCO_CLOSED: /* disconnected */ 625 err = sc->sc_err; 626 627 /* fall through to */ 628 case BTSCO_WAIT_CONNECT: /* error */ 629 if (sc->sc_sco != NULL) 630 sco_detach(&sc->sc_sco); 631 632 if (sc->sc_sco_l != NULL) 633 sco_detach(&sc->sc_sco_l); 634 635 break; 636 637 case BTSCO_OPEN: /* hurrah */ 638 sco_getopt(sc->sc_sco, SO_SCO_MTU, &sc->sc_mtu); 639 break; 640 641 default: 642 UNKNOWN(sc->sc_state); 643 break; 644 } 645 646 done: 647 splx(s); 648 649 DPRINTF("done err=%d, sc_state=%d, sc_mtu=%d\n", 650 err, sc->sc_state, sc->sc_mtu); 651 return err; 652 } 653 654 static void 655 btsco_close(void *hdl) 656 { 657 struct btsco_softc *sc = hdl; 658 int s; 659 660 DPRINTF("%s\n", device_xname((struct device *)sc)); 661 662 if (sc->sc_sco != NULL) { 663 s = splsoftnet(); 664 sco_disconnect(sc->sc_sco, 0); 665 sco_detach(&sc->sc_sco); 666 splx(s); 667 } 668 669 if (sc->sc_sco_l != NULL) { 670 s = splsoftnet(); 671 sco_detach(&sc->sc_sco_l); 672 splx(s); 673 } 674 675 if (sc->sc_rx_mbuf != NULL) { 676 m_freem(sc->sc_rx_mbuf); 677 sc->sc_rx_mbuf = NULL; 678 } 679 680 sc->sc_rx_want = 0; 681 sc->sc_rx_block = NULL; 682 sc->sc_rx_intr = NULL; 683 sc->sc_rx_intrarg = NULL; 684 685 sc->sc_tx_size = 0; 686 sc->sc_tx_block = NULL; 687 sc->sc_tx_pending = 0; 688 sc->sc_tx_intr = NULL; 689 sc->sc_tx_intrarg = NULL; 690 } 691 692 static int 693 btsco_query_encoding(void *hdl, struct audio_encoding *ae) 694 { 695 /* struct btsco_softc *sc = hdl; */ 696 int err = 0; 697 698 switch (ae->index) { 699 case 0: 700 strcpy(ae->name, AudioEslinear_le); 701 ae->encoding = AUDIO_ENCODING_SLINEAR_LE; 702 ae->precision = 16; 703 ae->flags = 0; 704 break; 705 706 default: 707 err = EINVAL; 708 } 709 710 return err; 711 } 712 713 static int 714 btsco_set_params(void *hdl, int setmode, int usemode, 715 audio_params_t *play, audio_params_t *rec, 716 stream_filter_list_t *pfil, stream_filter_list_t *rfil) 717 { 718 /* struct btsco_softc *sc = hdl; */ 719 audio_params_t hw; 720 int err = 0; 721 722 DPRINTF("setmode 0x%x usemode 0x%x\n", setmode, usemode); 723 DPRINTF("rate %d, precision %d, channels %d encoding %d\n", 724 play->sample_rate, play->precision, play->channels, play->encoding); 725 726 if ((play->precision != 16 && play->precision != 8) 727 || play->sample_rate < 7500 728 || play->sample_rate > 8500 729 || play->channels != 1) 730 return EINVAL; 731 732 play->sample_rate = 8000; 733 hw = *play; 734 735 switch (play->encoding) { 736 case AUDIO_ENCODING_ULAW: 737 hw.encoding = AUDIO_ENCODING_SLINEAR_LE; 738 pfil->append(pfil, mulaw_to_linear16, &hw); 739 break; 740 741 case AUDIO_ENCODING_ALAW: 742 hw.encoding = AUDIO_ENCODING_SLINEAR_LE; 743 pfil->append(pfil, alaw_to_linear16, &hw); 744 break; 745 746 case AUDIO_ENCODING_SLINEAR_LE: 747 break; 748 749 case AUDIO_ENCODING_SLINEAR_BE: 750 if (play->precision == 16) { 751 hw.encoding = AUDIO_ENCODING_SLINEAR_LE; 752 pfil->append(pfil, swap_bytes, &hw); 753 } 754 break; 755 756 case AUDIO_ENCODING_ULINEAR_LE: 757 case AUDIO_ENCODING_ULINEAR_BE: 758 default: 759 err = EINVAL; 760 } 761 762 return err; 763 } 764 765 /* 766 * If we have an MTU value to use, round the blocksize to that. 767 */ 768 static int 769 btsco_round_blocksize(void *hdl, int bs, int mode, const audio_params_t *param) 770 { 771 struct btsco_softc *sc = hdl; 772 773 if (sc->sc_mtu > 0) 774 bs = (bs / sc->sc_mtu) * sc->sc_mtu; 775 776 DPRINTF("%s mode=0x%x, bs=%d, sc_mtu=%d\n", 777 device_xname((struct device *)sc), mode, bs, sc->sc_mtu); 778 779 return bs; 780 } 781 782 /* 783 * Start Output 784 * 785 * We dont want to be calling the network stack at splaudio() so make 786 * a note of what is to be sent, and schedule an interrupt to bundle 787 * it up and queue it. 788 */ 789 static int 790 btsco_start_output(void *hdl, void *block, int blksize, 791 void (*intr)(void *), void *intrarg) 792 { 793 struct btsco_softc *sc = hdl; 794 795 DPRINTFN(5, "%s blksize %d\n", 796 device_xname((struct device *)sc), blksize); 797 798 if (sc->sc_sco == NULL) 799 return ENOTCONN; /* connection lost */ 800 801 sc->sc_tx_block = block; 802 sc->sc_tx_pending = 0; 803 sc->sc_tx_size = blksize; 804 sc->sc_tx_intr = intr; 805 sc->sc_tx_intrarg = intrarg; 806 807 softintr_schedule(sc->sc_intr); 808 return 0; 809 } 810 811 /* 812 * Start Input 813 * 814 * When the SCO link is up, we are getting data in any case, so all we do 815 * is note what we want and where to put it and let the sco_input routine 816 * fill in the data. 817 * 818 * If there was any leftover data that didnt fit in the last block, retry 819 * it now. 820 */ 821 static int 822 btsco_start_input(void *hdl, void *block, int blksize, 823 void (*intr)(void *), void *intrarg) 824 { 825 struct btsco_softc *sc = hdl; 826 struct mbuf *m; 827 828 DPRINTFN(5, "%s blksize %d\n", 829 device_xname((struct device *)sc), blksize); 830 831 if (sc->sc_sco == NULL) 832 return EINVAL; 833 834 sc->sc_rx_want = blksize; 835 sc->sc_rx_block = block; 836 sc->sc_rx_intr = intr; 837 sc->sc_rx_intrarg = intrarg; 838 839 if (sc->sc_rx_mbuf != NULL) { 840 m = sc->sc_rx_mbuf; 841 sc->sc_rx_mbuf = NULL; 842 btsco_sco_input(sc, m); 843 } 844 845 return 0; 846 } 847 848 /* 849 * Halt Output 850 * 851 * This doesnt really halt the output, but it will look 852 * that way to the audio driver. The current block will 853 * still be transmitted. 854 */ 855 static int 856 btsco_halt_output(void *hdl) 857 { 858 struct btsco_softc *sc = hdl; 859 860 DPRINTFN(5, "%s\n", device_xname((struct device *)sc)); 861 862 sc->sc_tx_size = 0; 863 sc->sc_tx_block = NULL; 864 sc->sc_tx_pending = 0; 865 sc->sc_tx_intr = NULL; 866 sc->sc_tx_intrarg = NULL; 867 868 return 0; 869 } 870 871 /* 872 * Halt Input 873 * 874 * This doesnt really halt the input, but it will look 875 * that way to the audio driver. Incoming data will be 876 * discarded. 877 */ 878 static int 879 btsco_halt_input(void *hdl) 880 { 881 struct btsco_softc *sc = hdl; 882 883 DPRINTFN(5, "%s\n", device_xname((struct device *)sc)); 884 885 sc->sc_rx_want = 0; 886 sc->sc_rx_block = NULL; 887 sc->sc_rx_intr = NULL; 888 sc->sc_rx_intrarg = NULL; 889 890 if (sc->sc_rx_mbuf != NULL) { 891 m_freem(sc->sc_rx_mbuf); 892 sc->sc_rx_mbuf = NULL; 893 } 894 895 return 0; 896 } 897 898 static int 899 btsco_getdev(void *hdl, struct audio_device *ret) 900 { 901 902 *ret = btsco_device; 903 return 0; 904 } 905 906 static int 907 btsco_setfd(void *hdl, int fd) 908 { 909 /* struct btsco_softc *sc = hdl; */ 910 911 DPRINTF("set %s duplex\n", fd ? "full" : "half"); 912 913 return 0; 914 } 915 916 static int 917 btsco_set_port(void *hdl, mixer_ctrl_t *mc) 918 { 919 struct btsco_softc *sc = hdl; 920 int err = 0; 921 922 DPRINTF("%s dev %d type %d\n", 923 device_xname((struct device *)sc), mc->dev, mc->type); 924 925 switch (mc->dev) { 926 case BTSCO_VGS: 927 if (mc->type != AUDIO_MIXER_VALUE || 928 mc->un.value.num_channels != 1) { 929 err = EINVAL; 930 break; 931 } 932 933 sc->sc_vgs = mc->un.value.level[AUDIO_MIXER_LEVEL_MONO]; 934 break; 935 936 case BTSCO_VGM: 937 if (mc->type != AUDIO_MIXER_VALUE || 938 mc->un.value.num_channels != 1) { 939 err = EINVAL; 940 break; 941 } 942 943 sc->sc_vgm = mc->un.value.level[AUDIO_MIXER_LEVEL_MONO]; 944 break; 945 946 default: 947 err = EINVAL; 948 break; 949 } 950 951 return err; 952 } 953 954 static int 955 btsco_get_port(void *hdl, mixer_ctrl_t *mc) 956 { 957 struct btsco_softc *sc = hdl; 958 int err = 0; 959 960 DPRINTF("%s dev %d\n", 961 device_xname((struct device *)sc), mc->dev); 962 963 switch (mc->dev) { 964 case BTSCO_VGS: 965 mc->type = AUDIO_MIXER_VALUE; 966 mc->un.value.num_channels = 1; 967 mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] = sc->sc_vgs; 968 break; 969 970 case BTSCO_VGM: 971 mc->type = AUDIO_MIXER_VALUE; 972 mc->un.value.num_channels = 1; 973 mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] = sc->sc_vgm; 974 break; 975 976 default: 977 err = EINVAL; 978 break; 979 } 980 981 return err; 982 } 983 984 static int 985 btsco_query_devinfo(void *hdl, mixer_devinfo_t *di) 986 { 987 /* struct btsco_softc *sc = hdl; */ 988 int err = 0; 989 990 switch(di->index) { 991 case BTSCO_VGS: 992 di->mixer_class = BTSCO_INPUT_CLASS; 993 di->next = di->prev = AUDIO_MIXER_LAST; 994 strcpy(di->label.name, AudioNspeaker); 995 di->type = AUDIO_MIXER_VALUE; 996 strcpy(di->un.v.units.name, AudioNvolume); 997 di->un.v.num_channels = 1; 998 di->un.v.delta = BTSCO_DELTA; 999 break; 1000 1001 case BTSCO_VGM: 1002 di->mixer_class = BTSCO_INPUT_CLASS; 1003 di->next = di->prev = AUDIO_MIXER_LAST; 1004 strcpy(di->label.name, AudioNmicrophone); 1005 di->type = AUDIO_MIXER_VALUE; 1006 strcpy(di->un.v.units.name, AudioNvolume); 1007 di->un.v.num_channels = 1; 1008 di->un.v.delta = BTSCO_DELTA; 1009 break; 1010 1011 case BTSCO_INPUT_CLASS: 1012 di->mixer_class = BTSCO_INPUT_CLASS; 1013 di->next = di->prev = AUDIO_MIXER_LAST; 1014 strcpy(di->label.name, AudioCinputs); 1015 di->type = AUDIO_MIXER_CLASS; 1016 break; 1017 1018 default: 1019 err = ENXIO; 1020 break; 1021 } 1022 1023 return err; 1024 } 1025 1026 /* 1027 * Allocate Ring Buffers. 1028 */ 1029 static void * 1030 btsco_allocm(void *hdl, int direction, size_t size, 1031 struct malloc_type *type, int flags) 1032 { 1033 struct btsco_softc *sc = hdl; 1034 void *addr; 1035 1036 DPRINTF("%s: size %d direction %d\n", 1037 device_xname((struct device *)sc), size, direction); 1038 1039 addr = malloc(size, type, flags); 1040 1041 if (direction == AUMODE_PLAY) { 1042 sc->sc_tx_buf = addr; 1043 sc->sc_tx_refcnt = 0; 1044 } 1045 1046 return addr; 1047 } 1048 1049 /* 1050 * Free Ring Buffers. 1051 * 1052 * Because we used external memory for the tx mbufs, we dont 1053 * want to free the memory until all the mbufs are done with 1054 * 1055 * Just to be sure, dont free if something is still pending. 1056 * This would be a memory leak but at least there is a warning.. 1057 */ 1058 static void 1059 btsco_freem(void *hdl, void *addr, struct malloc_type *type) 1060 { 1061 struct btsco_softc *sc = hdl; 1062 int count = hz / 2; 1063 1064 if (addr == sc->sc_tx_buf) { 1065 DPRINTF("%s: tx_refcnt=%d\n", 1066 device_xname((struct device *)sc), sc->sc_tx_refcnt); 1067 1068 sc->sc_tx_buf = NULL; 1069 1070 while (sc->sc_tx_refcnt> 0 && count-- > 0) 1071 tsleep(sc, PWAIT, "drain", 1); 1072 1073 if (sc->sc_tx_refcnt > 0) { 1074 printf("%s: ring buffer unreleased!\n", 1075 device_xname((struct device *)sc)); 1076 return; 1077 } 1078 } 1079 1080 free(addr, type); 1081 } 1082 1083 static int 1084 btsco_get_props(void *hdl) 1085 { 1086 1087 return AUDIO_PROP_FULLDUPLEX; 1088 } 1089 1090 /* 1091 * Handle private ioctl. We pass information out about how to talk 1092 * to the device and mixer. 1093 */ 1094 static int 1095 btsco_dev_ioctl(void *hdl, u_long cmd, caddr_t addr, int flag, struct lwp *l) 1096 { 1097 struct btsco_softc *sc = hdl; 1098 struct btsco_info *bi = (struct btsco_info *)addr; 1099 int err = 0; 1100 1101 DPRINTF("%s cmd 0x%lx flag %d\n", 1102 device_xname((struct device *)sc), cmd, flag); 1103 1104 switch (cmd) { 1105 case BTSCO_GETINFO: 1106 memset(bi, 0, sizeof(*bi)); 1107 bdaddr_copy(&bi->laddr, &sc->sc_laddr); 1108 bdaddr_copy(&bi->raddr, &sc->sc_raddr); 1109 bi->channel = sc->sc_channel; 1110 bi->vgs = BTSCO_VGS; 1111 bi->vgm = BTSCO_VGM; 1112 break; 1113 1114 default: 1115 err = EPASSTHROUGH; 1116 break; 1117 } 1118 1119 return err; 1120 } 1121 1122 1123 /***************************************************************************** 1124 * 1125 * misc btsco functions 1126 * 1127 */ 1128 1129 /* 1130 * Our transmit interrupt. This is triggered when a new block is to be 1131 * sent. We send mtu sized chunks of the block as mbufs with external 1132 * storage to sco_send() 1133 */ 1134 static void 1135 btsco_intr(void *arg) 1136 { 1137 struct btsco_softc *sc = arg; 1138 struct mbuf *m; 1139 uint8_t *block; 1140 int mlen, size; 1141 1142 DPRINTFN(10, "%s block %p size %d\n", 1143 device_xname((struct device *)sc), sc->sc_tx_block, sc->sc_tx_size); 1144 1145 if (sc->sc_sco == NULL) 1146 return; /* connection is lost */ 1147 1148 block = sc->sc_tx_block; 1149 size = sc->sc_tx_size; 1150 sc->sc_tx_block = NULL; 1151 sc->sc_tx_size = 0; 1152 1153 while (size > 0) { 1154 MGETHDR(m, M_DONTWAIT, MT_DATA); 1155 if (m == NULL) 1156 break; 1157 1158 mlen = MIN(sc->sc_mtu, size); 1159 1160 /* I think M_DEVBUF is true but not relevant */ 1161 MEXTADD(m, block, mlen, M_DEVBUF, btsco_extfree, sc); 1162 if ((m->m_flags & M_EXT) == 0) { 1163 m_free(m); 1164 break; 1165 } 1166 sc->sc_tx_refcnt++; 1167 1168 m->m_pkthdr.len = m->m_len = mlen; 1169 sc->sc_tx_pending++; 1170 1171 if (sco_send(sc->sc_sco, m) > 0) { 1172 sc->sc_tx_pending--; 1173 break; 1174 } 1175 1176 block += mlen; 1177 size -= mlen; 1178 } 1179 } 1180 1181 /* 1182 * Release the mbuf, we keep a reference count on the tx buffer so 1183 * that we dont release it before its free. 1184 */ 1185 static void 1186 btsco_extfree(struct mbuf *m, caddr_t addr, size_t size, void *arg) 1187 { 1188 struct btsco_softc *sc = arg; 1189 1190 if (m != NULL) 1191 pool_cache_put(&mbpool_cache, m); 1192 1193 sc->sc_tx_refcnt--; 1194 } 1195
Indexes created Wed Oct 01 07:09:59 GMT 2025