| 1 | /* $NetBSD: btsco.c,v 1.34 2015/07/10 22:03:12 nat 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 1.34 2015/07/10 22:03:12 nat 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/kmem.h> |
| 45 | #include <sys/mbuf.h> |
| 46 | #include <sys/proc.h> |
| 47 | #include <sys/socketvar.h> |
| 48 | #include <sys/systm.h> |
| 49 | #include <sys/intr.h> |
| 50 | |
| 51 | #include <prop/proplib.h> |
| 52 | |
| 53 | #include <netbt/bluetooth.h> |
| 54 | #include <netbt/rfcomm.h> |
| 55 | #include <netbt/sco.h> |
| 56 | |
| 57 | #include <dev/audio_if.h> |
| 58 | #include <dev/auconv.h> |
| 59 | #include <dev/mulaw.h> |
| 60 | |
| 61 | #include <dev/bluetooth/btdev.h> |
| 62 | #include <dev/bluetooth/btsco.h> |
| 63 | |
| 64 | #undef DPRINTF |
| 65 | #undef DPRINTFN |
| 66 | |
| 67 | #ifdef BTSCO_DEBUG |
| 68 | int btsco_debug = BTSCO_DEBUG; |
| 69 | #define DPRINTF(...) do { \ |
| 70 | if (btsco_debug) { \ |
| 71 | printf("%s: ", __func__); \ |
| 72 | printf(__VA_ARGS__); \ |
| 73 | } \ |
| 74 | } while (/* CONSTCOND */0) |
| 75 | |
| 76 | #define DPRINTFN(n, ...) do { \ |
| 77 | if (btsco_debug > (n)) { \ |
| 78 | printf("%s: ", __func__); \ |
| 79 | printf(__VA_ARGS__); \ |
| 80 | } \ |
| 81 | } while (/* CONSTCOND */0) |
| 82 | #else |
| 83 | #define DPRINTF(...) |
| 84 | #define DPRINTFN(...) |
| 85 | #endif |
| 86 | |
| 87 | /***************************************************************************** |
| 88 | * |
| 89 | * Bluetooth SCO Audio device |
| 90 | */ |
| 91 | |
| 92 | /* btsco softc */ |
| 93 | struct btsco_softc { |
| 94 | uint16_t sc_flags; |
| 95 | const char *sc_name; /* our device_xname */ |
| 96 | |
| 97 | device_t sc_audio; /* MI audio device */ |
| 98 | void *sc_intr; /* interrupt cookie */ |
| 99 | kcondvar_t sc_connect; /* connect wait */ |
| 100 | kmutex_t sc_intr_lock; /* for audio */ |
| 101 | |
| 102 | /* Bluetooth */ |
| 103 | bdaddr_t sc_laddr; /* local address */ |
| 104 | bdaddr_t sc_raddr; /* remote address */ |
| 105 | uint16_t sc_state; /* link state */ |
| 106 | struct sco_pcb *sc_sco; /* SCO handle */ |
| 107 | struct sco_pcb *sc_sco_l; /* SCO listen handle */ |
| 108 | uint16_t sc_mtu; /* SCO mtu */ |
| 109 | uint8_t sc_channel; /* RFCOMM channel */ |
| 110 | int sc_err; /* stored error */ |
| 111 | |
| 112 | /* Receive */ |
| 113 | int sc_rx_want; /* bytes wanted */ |
| 114 | uint8_t *sc_rx_block; /* receive block */ |
| 115 | void (*sc_rx_intr)(void *); /* callback */ |
| 116 | void *sc_rx_intrarg; /* callback arg */ |
| 117 | struct mbuf *sc_rx_mbuf; /* leftover mbuf */ |
| 118 | |
| 119 | /* Transmit */ |
| 120 | int sc_tx_size; /* bytes to send */ |
| 121 | int sc_tx_pending; /* packets pending */ |
| 122 | uint8_t *sc_tx_block; /* transmit block */ |
| 123 | void (*sc_tx_intr)(void *); /* callback */ |
| 124 | void *sc_tx_intrarg; /* callback arg */ |
| 125 | void *sc_tx_buf; /* transmit buffer */ |
| 126 | int sc_tx_refcnt; /* buffer refcnt */ |
| 127 | |
| 128 | /* mixer data */ |
| 129 | int sc_vgs; /* speaker volume */ |
| 130 | int sc_vgm; /* mic volume */ |
| 131 | }; |
| 132 | |
| 133 | /* sc_state */ |
| 134 | #define BTSCO_CLOSED 0 |
| 135 | #define BTSCO_WAIT_CONNECT 1 |
| 136 | #define BTSCO_OPEN 2 |
| 137 | |
| 138 | /* sc_flags */ |
| 139 | #define BTSCO_LISTEN (1 << 1) |
| 140 | |
| 141 | /* autoconf(9) glue */ |
| 142 | static int btsco_match(device_t, cfdata_t, void *); |
| 143 | static void btsco_attach(device_t, device_t, void *); |
| 144 | static int btsco_detach(device_t, int); |
| 145 | |
| 146 | CFATTACH_DECL_NEW(btsco, sizeof(struct btsco_softc), |
| 147 | btsco_match, btsco_attach, btsco_detach, NULL); |
| 148 | |
| 149 | /* audio(9) glue */ |
| 150 | static int btsco_open(void *, int); |
| 151 | static void btsco_close(void *); |
| 152 | static int btsco_query_encoding(void *, struct audio_encoding *); |
| 153 | static int btsco_set_params(void *, int, int, audio_params_t *, audio_params_t *, |
| 154 | stream_filter_list_t *, stream_filter_list_t *); |
| 155 | static int btsco_round_blocksize(void *, int, int, const audio_params_t *); |
| 156 | static int btsco_start_output(void *, void *, int, void (*)(void *), void *); |
| 157 | static int btsco_start_input(void *, void *, int, void (*)(void *), void *); |
| 158 | static int btsco_halt_output(void *); |
| 159 | static int btsco_halt_input(void *); |
| 160 | static int btsco_getdev(void *, struct audio_device *); |
| 161 | static int btsco_setfd(void *, int); |
| 162 | static int btsco_set_port(void *, mixer_ctrl_t *); |
| 163 | static int btsco_get_port(void *, mixer_ctrl_t *); |
| 164 | static int btsco_query_devinfo(void *, mixer_devinfo_t *); |
| 165 | static void *btsco_allocm(void *, int, size_t); |
| 166 | static void btsco_freem(void *, void *, size_t); |
| 167 | static int btsco_get_props(void *); |
| 168 | static int btsco_dev_ioctl(void *, u_long, void *, int, struct lwp *); |
| 169 | static void btsco_get_locks(void *, kmutex_t **, kmutex_t **); |
| 170 | |
| 171 | static const struct audio_hw_if btsco_if = { |
| 172 | btsco_open, /* open */ |
| 173 | btsco_close, /* close */ |
| 174 | NULL, /* drain */ |
| 175 | btsco_query_encoding, /* query_encoding */ |
| 176 | btsco_set_params, /* set_params */ |
| 177 | btsco_round_blocksize, /* round_blocksize */ |
| 178 | NULL, /* commit_settings */ |
| 179 | NULL, /* init_output */ |
| 180 | NULL, /* init_input */ |
| 181 | btsco_start_output, /* start_output */ |
| 182 | btsco_start_input, /* start_input */ |
| 183 | btsco_halt_output, /* halt_output */ |
| 184 | btsco_halt_input, /* halt_input */ |
| 185 | NULL, /* speaker_ctl */ |
| 186 | btsco_getdev, /* getdev */ |
| 187 | btsco_setfd, /* setfd */ |
| 188 | btsco_set_port, /* set_port */ |
| 189 | btsco_get_port, /* get_port */ |
| 190 | btsco_query_devinfo, /* query_devinfo */ |
| 191 | btsco_allocm, /* allocm */ |
| 192 | btsco_freem, /* freem */ |
| 193 | NULL, /* round_buffersize */ |
| 194 | NULL, /* mappage */ |
| 195 | btsco_get_props, /* get_props */ |
| 196 | NULL, /* trigger_output */ |
| 197 | NULL, /* trigger_input */ |
| 198 | btsco_dev_ioctl, /* dev_ioctl */ |
| 199 | btsco_get_locks, /* get_locks */ |
| 200 | }; |
| 201 | |
| 202 | static const struct audio_device btsco_device = { |
| 203 | "Bluetooth Audio" , |
| 204 | "" , |
| 205 | "btsco" |
| 206 | }; |
| 207 | |
| 208 | /* Voice_Setting == 0x0060: 8000Hz, mono, 16-bit, slinear_le */ |
| 209 | static const struct audio_format btsco_format = { |
| 210 | NULL, /* driver_data */ |
| 211 | (AUMODE_PLAY | AUMODE_RECORD), /* mode */ |
| 212 | AUDIO_ENCODING_SLINEAR_LE, /* encoding */ |
| 213 | 16, /* validbits */ |
| 214 | 16, /* precision */ |
| 215 | 1, /* channels */ |
| 216 | AUFMT_MONAURAL, /* channel_mask */ |
| 217 | 1, /* frequency_type */ |
| 218 | { 8000 } /* frequency */ |
| 219 | }; |
| 220 | |
| 221 | /* bluetooth(9) glue for SCO */ |
| 222 | static void btsco_sco_connecting(void *); |
| 223 | static void btsco_sco_connected(void *); |
| 224 | static void btsco_sco_disconnected(void *, int); |
| 225 | static void *btsco_sco_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *); |
| 226 | static void btsco_sco_complete(void *, int); |
| 227 | static void btsco_sco_linkmode(void *, int); |
| 228 | static void btsco_sco_input(void *, struct mbuf *); |
| 229 | |
| 230 | static const struct btproto btsco_sco_proto = { |
| 231 | btsco_sco_connecting, |
| 232 | btsco_sco_connected, |
| 233 | btsco_sco_disconnected, |
| 234 | btsco_sco_newconn, |
| 235 | btsco_sco_complete, |
| 236 | btsco_sco_linkmode, |
| 237 | btsco_sco_input, |
| 238 | }; |
| 239 | |
| 240 | |
| 241 | /***************************************************************************** |
| 242 | * |
| 243 | * btsco definitions |
| 244 | */ |
| 245 | |
| 246 | /* |
| 247 | * btsco mixer class |
| 248 | */ |
| 249 | #define BTSCO_VGS 0 |
| 250 | #define BTSCO_VGM 1 |
| 251 | #define BTSCO_INPUT_CLASS 2 |
| 252 | #define BTSCO_OUTPUT_CLASS 3 |
| 253 | |
| 254 | /* connect timeout */ |
| 255 | #define BTSCO_TIMEOUT (30 * hz) |
| 256 | |
| 257 | /* misc btsco functions */ |
| 258 | static void btsco_extfree(struct mbuf *, void *, size_t, void *); |
| 259 | static void btsco_intr(void *); |
| 260 | |
| 261 | |
| 262 | /***************************************************************************** |
| 263 | * |
| 264 | * btsco autoconf(9) routines |
| 265 | */ |
| 266 | |
| 267 | static int |
| 268 | btsco_match(device_t self, cfdata_t cfdata, void *aux) |
| 269 | { |
| 270 | prop_dictionary_t dict = aux; |
| 271 | prop_object_t obj; |
| 272 | |
| 273 | obj = prop_dictionary_get(dict, BTDEVservice); |
| 274 | if (prop_string_equals_cstring(obj, "HSET" )) |
| 275 | return 1; |
| 276 | |
| 277 | if (prop_string_equals_cstring(obj, "HF" )) |
| 278 | return 1; |
| 279 | |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | static void |
| 284 | btsco_attach(device_t parent, device_t self, void *aux) |
| 285 | { |
| 286 | struct btsco_softc *sc = device_private(self); |
| 287 | prop_dictionary_t dict = aux; |
| 288 | prop_object_t obj; |
| 289 | |
| 290 | /* |
| 291 | * Init softc |
| 292 | */ |
| 293 | sc->sc_vgs = 200; |
| 294 | sc->sc_vgm = 200; |
| 295 | sc->sc_state = BTSCO_CLOSED; |
| 296 | sc->sc_name = device_xname(self); |
| 297 | cv_init(&sc->sc_connect, "connect" ); |
| 298 | mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_NONE); |
| 299 | |
| 300 | /* |
| 301 | * copy in our configuration info |
| 302 | */ |
| 303 | obj = prop_dictionary_get(dict, BTDEVladdr); |
| 304 | bdaddr_copy(&sc->sc_laddr, prop_data_data_nocopy(obj)); |
| 305 | |
| 306 | obj = prop_dictionary_get(dict, BTDEVraddr); |
| 307 | bdaddr_copy(&sc->sc_raddr, prop_data_data_nocopy(obj)); |
| 308 | |
| 309 | obj = prop_dictionary_get(dict, BTDEVservice); |
| 310 | if (prop_string_equals_cstring(obj, "HF" )) { |
| 311 | sc->sc_flags |= BTSCO_LISTEN; |
| 312 | aprint_verbose(" listen mode" ); |
| 313 | } |
| 314 | |
| 315 | obj = prop_dictionary_get(dict, BTSCOchannel); |
| 316 | if (prop_object_type(obj) != PROP_TYPE_NUMBER |
| 317 | || prop_number_integer_value(obj) < RFCOMM_CHANNEL_MIN |
| 318 | || prop_number_integer_value(obj) > RFCOMM_CHANNEL_MAX) { |
| 319 | aprint_error(" invalid %s" , BTSCOchannel); |
| 320 | return; |
| 321 | } |
| 322 | sc->sc_channel = prop_number_integer_value(obj); |
| 323 | |
| 324 | aprint_verbose(" channel %d" , sc->sc_channel); |
| 325 | aprint_normal("\n" ); |
| 326 | |
| 327 | DPRINTF("sc=%p\n" , sc); |
| 328 | |
| 329 | /* |
| 330 | * set up transmit interrupt |
| 331 | */ |
| 332 | sc->sc_intr = softint_establish(SOFTINT_NET, btsco_intr, sc); |
| 333 | if (sc->sc_intr == NULL) { |
| 334 | aprint_error_dev(self, "softint_establish failed\n" ); |
| 335 | return; |
| 336 | } |
| 337 | |
| 338 | /* |
| 339 | * attach audio device |
| 340 | */ |
| 341 | sc->sc_audio = audio_attach_mi(&btsco_if, sc, self); |
| 342 | if (sc->sc_audio == NULL) { |
| 343 | aprint_error_dev(self, "audio_attach_mi failed\n" ); |
| 344 | return; |
| 345 | } |
| 346 | |
| 347 | pmf_device_register(self, NULL, NULL); |
| 348 | } |
| 349 | |
| 350 | static int |
| 351 | btsco_detach(device_t self, int flags) |
| 352 | { |
| 353 | struct btsco_softc *sc = device_private(self); |
| 354 | |
| 355 | DPRINTF("sc=%p\n" , sc); |
| 356 | |
| 357 | pmf_device_deregister(self); |
| 358 | |
| 359 | mutex_enter(bt_lock); |
| 360 | if (sc->sc_sco != NULL) { |
| 361 | DPRINTF("sc_sco=%p\n" , sc->sc_sco); |
| 362 | sco_disconnect_pcb(sc->sc_sco, 0); |
| 363 | sco_detach_pcb(&sc->sc_sco); |
| 364 | sc->sc_sco = NULL; |
| 365 | } |
| 366 | |
| 367 | if (sc->sc_sco_l != NULL) { |
| 368 | DPRINTF("sc_sco_l=%p\n" , sc->sc_sco_l); |
| 369 | sco_detach_pcb(&sc->sc_sco_l); |
| 370 | sc->sc_sco_l = NULL; |
| 371 | } |
| 372 | mutex_exit(bt_lock); |
| 373 | |
| 374 | if (sc->sc_audio != NULL) { |
| 375 | DPRINTF("sc_audio=%p\n" , sc->sc_audio); |
| 376 | config_detach(sc->sc_audio, flags); |
| 377 | sc->sc_audio = NULL; |
| 378 | } |
| 379 | |
| 380 | if (sc->sc_intr != NULL) { |
| 381 | softint_disestablish(sc->sc_intr); |
| 382 | sc->sc_intr = NULL; |
| 383 | } |
| 384 | |
| 385 | if (sc->sc_rx_mbuf != NULL) { |
| 386 | m_freem(sc->sc_rx_mbuf); |
| 387 | sc->sc_rx_mbuf = NULL; |
| 388 | } |
| 389 | |
| 390 | if (sc->sc_tx_refcnt > 0) { |
| 391 | aprint_error_dev(self, "tx_refcnt=%d!\n" , sc->sc_tx_refcnt); |
| 392 | |
| 393 | if ((flags & DETACH_FORCE) == 0) |
| 394 | return EAGAIN; |
| 395 | } |
| 396 | |
| 397 | cv_destroy(&sc->sc_connect); |
| 398 | mutex_destroy(&sc->sc_intr_lock); |
| 399 | |
| 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | /***************************************************************************** |
| 404 | * |
| 405 | * bluetooth(9) methods for SCO |
| 406 | * |
| 407 | * All these are called from Bluetooth Protocol code, in a soft |
| 408 | * interrupt context at IPL_SOFTNET. |
| 409 | */ |
| 410 | |
| 411 | static void |
| 412 | btsco_sco_connecting(void *arg) |
| 413 | { |
| 414 | /* struct btsco_softc *sc = arg; */ |
| 415 | |
| 416 | /* dont care */ |
| 417 | } |
| 418 | |
| 419 | static void |
| 420 | btsco_sco_connected(void *arg) |
| 421 | { |
| 422 | struct btsco_softc *sc = arg; |
| 423 | |
| 424 | DPRINTF("%s\n" , sc->sc_name); |
| 425 | |
| 426 | KASSERT(sc->sc_sco != NULL); |
| 427 | KASSERT(sc->sc_state == BTSCO_WAIT_CONNECT); |
| 428 | |
| 429 | /* |
| 430 | * If we are listening, no more need |
| 431 | */ |
| 432 | if (sc->sc_sco_l != NULL) |
| 433 | sco_detach_pcb(&sc->sc_sco_l); |
| 434 | |
| 435 | sc->sc_state = BTSCO_OPEN; |
| 436 | cv_broadcast(&sc->sc_connect); |
| 437 | } |
| 438 | |
| 439 | static void |
| 440 | btsco_sco_disconnected(void *arg, int err) |
| 441 | { |
| 442 | struct btsco_softc *sc = arg; |
| 443 | |
| 444 | DPRINTF("%s sc_state %d\n" , sc->sc_name, sc->sc_state); |
| 445 | |
| 446 | KASSERT(sc->sc_sco != NULL); |
| 447 | |
| 448 | sc->sc_err = err; |
| 449 | sco_detach_pcb(&sc->sc_sco); |
| 450 | |
| 451 | switch (sc->sc_state) { |
| 452 | case BTSCO_CLOSED: /* dont think this can happen */ |
| 453 | break; |
| 454 | |
| 455 | case BTSCO_WAIT_CONNECT: /* connect failed */ |
| 456 | cv_broadcast(&sc->sc_connect); |
| 457 | break; |
| 458 | |
| 459 | case BTSCO_OPEN: /* link lost */ |
| 460 | /* |
| 461 | * If IO is in progress, tell the audio driver that it |
| 462 | * has completed so that when it tries to send more, we |
| 463 | * can indicate an error. |
| 464 | */ |
| 465 | mutex_enter(&sc->sc_intr_lock); |
| 466 | if (sc->sc_tx_pending > 0) { |
| 467 | sc->sc_tx_pending = 0; |
| 468 | (*sc->sc_tx_intr)(sc->sc_tx_intrarg); |
| 469 | } |
| 470 | if (sc->sc_rx_want > 0) { |
| 471 | sc->sc_rx_want = 0; |
| 472 | (*sc->sc_rx_intr)(sc->sc_rx_intrarg); |
| 473 | } |
| 474 | mutex_exit(&sc->sc_intr_lock); |
| 475 | break; |
| 476 | |
| 477 | default: |
| 478 | UNKNOWN(sc->sc_state); |
| 479 | } |
| 480 | |
| 481 | sc->sc_state = BTSCO_CLOSED; |
| 482 | } |
| 483 | |
| 484 | static void * |
| 485 | btsco_sco_newconn(void *arg, struct sockaddr_bt *laddr, |
| 486 | struct sockaddr_bt *raddr) |
| 487 | { |
| 488 | struct btsco_softc *sc = arg; |
| 489 | |
| 490 | DPRINTF("%s\n" , sc->sc_name); |
| 491 | |
| 492 | if (bdaddr_same(&raddr->bt_bdaddr, &sc->sc_raddr) == 0 |
| 493 | || sc->sc_state != BTSCO_WAIT_CONNECT |
| 494 | || sc->sc_sco != NULL) |
| 495 | return NULL; |
| 496 | |
| 497 | sco_attach_pcb(&sc->sc_sco, &btsco_sco_proto, sc); |
| 498 | return sc->sc_sco; |
| 499 | } |
| 500 | |
| 501 | static void |
| 502 | btsco_sco_complete(void *arg, int count) |
| 503 | { |
| 504 | struct btsco_softc *sc = arg; |
| 505 | |
| 506 | DPRINTFN(10, "%s count %d\n" , sc->sc_name, count); |
| 507 | |
| 508 | mutex_enter(&sc->sc_intr_lock); |
| 509 | if (sc->sc_tx_pending > 0) { |
| 510 | sc->sc_tx_pending -= count; |
| 511 | if (sc->sc_tx_pending == 0) |
| 512 | (*sc->sc_tx_intr)(sc->sc_tx_intrarg); |
| 513 | } |
| 514 | mutex_exit(&sc->sc_intr_lock); |
| 515 | } |
| 516 | |
| 517 | static void |
| 518 | btsco_sco_linkmode(void *arg, int new) |
| 519 | { |
| 520 | /* struct btsco_softc *sc = arg; */ |
| 521 | |
| 522 | /* dont care */ |
| 523 | } |
| 524 | |
| 525 | static void |
| 526 | btsco_sco_input(void *arg, struct mbuf *m) |
| 527 | { |
| 528 | struct btsco_softc *sc = arg; |
| 529 | int len; |
| 530 | |
| 531 | DPRINTFN(10, "%s len=%d\n" , sc->sc_name, m->m_pkthdr.len); |
| 532 | |
| 533 | mutex_enter(&sc->sc_intr_lock); |
| 534 | if (sc->sc_rx_want == 0) { |
| 535 | m_freem(m); |
| 536 | } else { |
| 537 | KASSERT(sc->sc_rx_intr != NULL); |
| 538 | KASSERT(sc->sc_rx_block != NULL); |
| 539 | |
| 540 | len = MIN(sc->sc_rx_want, m->m_pkthdr.len); |
| 541 | m_copydata(m, 0, len, sc->sc_rx_block); |
| 542 | |
| 543 | sc->sc_rx_want -= len; |
| 544 | sc->sc_rx_block += len; |
| 545 | |
| 546 | if (len > m->m_pkthdr.len) { |
| 547 | if (sc->sc_rx_mbuf != NULL) |
| 548 | m_freem(sc->sc_rx_mbuf); |
| 549 | |
| 550 | m_adj(m, len); |
| 551 | sc->sc_rx_mbuf = m; |
| 552 | } else { |
| 553 | m_freem(m); |
| 554 | } |
| 555 | |
| 556 | if (sc->sc_rx_want == 0) |
| 557 | (*sc->sc_rx_intr)(sc->sc_rx_intrarg); |
| 558 | } |
| 559 | mutex_exit(&sc->sc_intr_lock); |
| 560 | } |
| 561 | |
| 562 | |
| 563 | /***************************************************************************** |
| 564 | * |
| 565 | * audio(9) methods |
| 566 | * |
| 567 | */ |
| 568 | |
| 569 | static int |
| 570 | btsco_open(void *hdl, int flags) |
| 571 | { |
| 572 | struct sockaddr_bt sa; |
| 573 | struct btsco_softc *sc = hdl; |
| 574 | struct sockopt sopt; |
| 575 | int err, timo; |
| 576 | |
| 577 | DPRINTF("%s flags 0x%x\n" , sc->sc_name, flags); |
| 578 | /* flags FREAD & FWRITE? */ |
| 579 | |
| 580 | if (sc->sc_sco != NULL || sc->sc_sco_l != NULL) |
| 581 | return EIO; |
| 582 | |
| 583 | KASSERT(mutex_owned(bt_lock)); |
| 584 | |
| 585 | memset(&sa, 0, sizeof(sa)); |
| 586 | sa.bt_len = sizeof(sa); |
| 587 | sa.bt_family = AF_BLUETOOTH; |
| 588 | bdaddr_copy(&sa.bt_bdaddr, &sc->sc_laddr); |
| 589 | |
| 590 | if (sc->sc_flags & BTSCO_LISTEN) { |
| 591 | err = sco_attach_pcb(&sc->sc_sco_l, &btsco_sco_proto, sc); |
| 592 | if (err) |
| 593 | goto done; |
| 594 | |
| 595 | err = sco_bind_pcb(sc->sc_sco_l, &sa); |
| 596 | if (err) { |
| 597 | sco_detach_pcb(&sc->sc_sco_l); |
| 598 | goto done; |
| 599 | } |
| 600 | |
| 601 | err = sco_listen_pcb(sc->sc_sco_l); |
| 602 | if (err) { |
| 603 | sco_detach_pcb(&sc->sc_sco_l); |
| 604 | goto done; |
| 605 | } |
| 606 | |
| 607 | timo = 0; /* no timeout */ |
| 608 | } else { |
| 609 | err = sco_attach_pcb(&sc->sc_sco, &btsco_sco_proto, sc); |
| 610 | if (err) |
| 611 | goto done; |
| 612 | |
| 613 | err = sco_bind_pcb(sc->sc_sco, &sa); |
| 614 | if (err) { |
| 615 | sco_detach_pcb(&sc->sc_sco); |
| 616 | goto done; |
| 617 | } |
| 618 | |
| 619 | bdaddr_copy(&sa.bt_bdaddr, &sc->sc_raddr); |
| 620 | err = sco_connect_pcb(sc->sc_sco, &sa); |
| 621 | if (err) { |
| 622 | sco_detach_pcb(&sc->sc_sco); |
| 623 | goto done; |
| 624 | } |
| 625 | |
| 626 | timo = BTSCO_TIMEOUT; |
| 627 | } |
| 628 | |
| 629 | sc->sc_state = BTSCO_WAIT_CONNECT; |
| 630 | while (err == 0 && sc->sc_state == BTSCO_WAIT_CONNECT) |
| 631 | err = cv_timedwait_sig(&sc->sc_connect, bt_lock, timo); |
| 632 | |
| 633 | switch (sc->sc_state) { |
| 634 | case BTSCO_CLOSED: /* disconnected */ |
| 635 | err = sc->sc_err; |
| 636 | |
| 637 | /* fall through to */ |
| 638 | case BTSCO_WAIT_CONNECT: /* error */ |
| 639 | if (sc->sc_sco != NULL) |
| 640 | sco_detach_pcb(&sc->sc_sco); |
| 641 | |
| 642 | if (sc->sc_sco_l != NULL) |
| 643 | sco_detach_pcb(&sc->sc_sco_l); |
| 644 | |
| 645 | break; |
| 646 | |
| 647 | case BTSCO_OPEN: /* hurrah */ |
| 648 | sockopt_init(&sopt, BTPROTO_SCO, SO_SCO_MTU, 0); |
| 649 | (void)sco_getopt(sc->sc_sco, &sopt); |
| 650 | (void)sockopt_get(&sopt, &sc->sc_mtu, sizeof(sc->sc_mtu)); |
| 651 | sockopt_destroy(&sopt); |
| 652 | break; |
| 653 | |
| 654 | default: |
| 655 | UNKNOWN(sc->sc_state); |
| 656 | break; |
| 657 | } |
| 658 | |
| 659 | done: |
| 660 | DPRINTF("done err=%d, sc_state=%d, sc_mtu=%d\n" , |
| 661 | err, sc->sc_state, sc->sc_mtu); |
| 662 | return err; |
| 663 | } |
| 664 | |
| 665 | static void |
| 666 | btsco_close(void *hdl) |
| 667 | { |
| 668 | struct btsco_softc *sc = hdl; |
| 669 | |
| 670 | DPRINTF("%s\n" , sc->sc_name); |
| 671 | |
| 672 | KASSERT(mutex_owned(bt_lock)); |
| 673 | |
| 674 | if (sc->sc_sco != NULL) { |
| 675 | sco_disconnect_pcb(sc->sc_sco, 0); |
| 676 | sco_detach_pcb(&sc->sc_sco); |
| 677 | } |
| 678 | |
| 679 | if (sc->sc_sco_l != NULL) { |
| 680 | sco_detach_pcb(&sc->sc_sco_l); |
| 681 | } |
| 682 | |
| 683 | if (sc->sc_rx_mbuf != NULL) { |
| 684 | m_freem(sc->sc_rx_mbuf); |
| 685 | sc->sc_rx_mbuf = NULL; |
| 686 | } |
| 687 | |
| 688 | sc->sc_rx_want = 0; |
| 689 | sc->sc_rx_block = NULL; |
| 690 | sc->sc_rx_intr = NULL; |
| 691 | sc->sc_rx_intrarg = NULL; |
| 692 | |
| 693 | sc->sc_tx_size = 0; |
| 694 | sc->sc_tx_block = NULL; |
| 695 | sc->sc_tx_pending = 0; |
| 696 | sc->sc_tx_intr = NULL; |
| 697 | sc->sc_tx_intrarg = NULL; |
| 698 | } |
| 699 | |
| 700 | static int |
| 701 | btsco_query_encoding(void *hdl, struct audio_encoding *ae) |
| 702 | { |
| 703 | /* struct btsco_softc *sc = hdl; */ |
| 704 | int err = 0; |
| 705 | |
| 706 | switch (ae->index) { |
| 707 | case 0: |
| 708 | strcpy(ae->name, AudioEslinear_le); |
| 709 | ae->encoding = AUDIO_ENCODING_SLINEAR_LE; |
| 710 | ae->precision = 16; |
| 711 | ae->flags = 0; |
| 712 | break; |
| 713 | |
| 714 | default: |
| 715 | err = EINVAL; |
| 716 | } |
| 717 | |
| 718 | return err; |
| 719 | } |
| 720 | |
| 721 | static int |
| 722 | btsco_set_params(void *hdl, int setmode, int usemode, |
| 723 | audio_params_t *play, audio_params_t *rec, |
| 724 | stream_filter_list_t *pfil, stream_filter_list_t *rfil) |
| 725 | { |
| 726 | /* struct btsco_softc *sc = hdl; */ |
| 727 | const struct audio_format *f; |
| 728 | int rv; |
| 729 | |
| 730 | DPRINTF("setmode 0x%x usemode 0x%x\n" , setmode, usemode); |
| 731 | DPRINTF("rate %d, precision %d, channels %d encoding %d\n" , |
| 732 | play->sample_rate, play->precision, play->channels, play->encoding); |
| 733 | |
| 734 | /* |
| 735 | * If we had a list of formats, we could check the HCI_Voice_Setting |
| 736 | * and select the appropriate one to use. Currently only one is |
| 737 | * supported: 0x0060 == 8000Hz, mono, 16-bit, slinear_le |
| 738 | */ |
| 739 | f = &btsco_format; |
| 740 | |
| 741 | if (setmode & AUMODE_PLAY) { |
| 742 | rv = auconv_set_converter(f, 1, AUMODE_PLAY, play, TRUE, pfil); |
| 743 | if (rv < 0) |
| 744 | return EINVAL; |
| 745 | } |
| 746 | |
| 747 | if (setmode & AUMODE_RECORD) { |
| 748 | rv = auconv_set_converter(f, 1, AUMODE_RECORD, rec, TRUE, rfil); |
| 749 | if (rv < 0) |
| 750 | return EINVAL; |
| 751 | } |
| 752 | |
| 753 | return 0; |
| 754 | } |
| 755 | |
| 756 | /* |
| 757 | * If we have an MTU value to use, round the blocksize to that. |
| 758 | */ |
| 759 | static int |
| 760 | btsco_round_blocksize(void *hdl, int bs, int mode, |
| 761 | const audio_params_t *param) |
| 762 | { |
| 763 | struct btsco_softc *sc = hdl; |
| 764 | |
| 765 | if (sc->sc_mtu > 0) { |
| 766 | bs = (bs / sc->sc_mtu) * sc->sc_mtu; |
| 767 | if (bs == 0) |
| 768 | bs = sc->sc_mtu; |
| 769 | } |
| 770 | |
| 771 | DPRINTF("%s mode=0x%x, bs=%d, sc_mtu=%d\n" , |
| 772 | sc->sc_name, mode, bs, sc->sc_mtu); |
| 773 | |
| 774 | return bs; |
| 775 | } |
| 776 | |
| 777 | /* |
| 778 | * Start Output |
| 779 | * |
| 780 | * We dont want to be calling the network stack with sc_intr_lock held |
| 781 | * so make a note of what is to be sent, and schedule an interrupt to |
| 782 | * bundle it up and queue it. |
| 783 | */ |
| 784 | static int |
| 785 | btsco_start_output(void *hdl, void *block, int blksize, |
| 786 | void (*intr)(void *), void *intrarg) |
| 787 | { |
| 788 | struct btsco_softc *sc = hdl; |
| 789 | |
| 790 | DPRINTFN(5, "%s blksize %d\n" , sc->sc_name, blksize); |
| 791 | |
| 792 | if (sc->sc_sco == NULL) |
| 793 | return ENOTCONN; /* connection lost */ |
| 794 | |
| 795 | sc->sc_tx_block = block; |
| 796 | sc->sc_tx_pending = 0; |
| 797 | sc->sc_tx_size = blksize; |
| 798 | sc->sc_tx_intr = intr; |
| 799 | sc->sc_tx_intrarg = intrarg; |
| 800 | |
| 801 | kpreempt_disable(); |
| 802 | softint_schedule(sc->sc_intr); |
| 803 | kpreempt_enable(); |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | /* |
| 808 | * Start Input |
| 809 | * |
| 810 | * When the SCO link is up, we are getting data in any case, so all we do |
| 811 | * is note what we want and where to put it and let the sco_input routine |
| 812 | * fill in the data. |
| 813 | * |
| 814 | * If there was any leftover data that didnt fit in the last block, retry |
| 815 | * it now. |
| 816 | */ |
| 817 | static int |
| 818 | btsco_start_input(void *hdl, void *block, int blksize, |
| 819 | void (*intr)(void *), void *intrarg) |
| 820 | { |
| 821 | struct btsco_softc *sc = hdl; |
| 822 | struct mbuf *m; |
| 823 | |
| 824 | DPRINTFN(5, "%s blksize %d\n" , sc->sc_name, blksize); |
| 825 | |
| 826 | if (sc->sc_sco == NULL) |
| 827 | return ENOTCONN; |
| 828 | |
| 829 | sc->sc_rx_want = blksize; |
| 830 | sc->sc_rx_block = block; |
| 831 | sc->sc_rx_intr = intr; |
| 832 | sc->sc_rx_intrarg = intrarg; |
| 833 | |
| 834 | if (sc->sc_rx_mbuf != NULL) { |
| 835 | m = sc->sc_rx_mbuf; |
| 836 | sc->sc_rx_mbuf = NULL; |
| 837 | btsco_sco_input(sc, m); |
| 838 | } |
| 839 | |
| 840 | return 0; |
| 841 | } |
| 842 | |
| 843 | /* |
| 844 | * Halt Output |
| 845 | * |
| 846 | * This doesnt really halt the output, but it will look |
| 847 | * that way to the audio driver. The current block will |
| 848 | * still be transmitted. |
| 849 | */ |
| 850 | static int |
| 851 | btsco_halt_output(void *hdl) |
| 852 | { |
| 853 | struct btsco_softc *sc = hdl; |
| 854 | |
| 855 | DPRINTFN(5, "%s\n" , sc->sc_name); |
| 856 | |
| 857 | sc->sc_tx_size = 0; |
| 858 | sc->sc_tx_block = NULL; |
| 859 | sc->sc_tx_pending = 0; |
| 860 | sc->sc_tx_intr = NULL; |
| 861 | sc->sc_tx_intrarg = NULL; |
| 862 | |
| 863 | return 0; |
| 864 | } |
| 865 | |
| 866 | /* |
| 867 | * Halt Input |
| 868 | * |
| 869 | * This doesnt really halt the input, but it will look |
| 870 | * that way to the audio driver. Incoming data will be |
| 871 | * discarded. |
| 872 | */ |
| 873 | static int |
| 874 | btsco_halt_input(void *hdl) |
| 875 | { |
| 876 | struct btsco_softc *sc = hdl; |
| 877 | |
| 878 | DPRINTFN(5, "%s\n" , sc->sc_name); |
| 879 | |
| 880 | sc->sc_rx_want = 0; |
| 881 | sc->sc_rx_block = NULL; |
| 882 | sc->sc_rx_intr = NULL; |
| 883 | sc->sc_rx_intrarg = NULL; |
| 884 | |
| 885 | if (sc->sc_rx_mbuf != NULL) { |
| 886 | m_freem(sc->sc_rx_mbuf); |
| 887 | sc->sc_rx_mbuf = NULL; |
| 888 | } |
| 889 | |
| 890 | return 0; |
| 891 | } |
| 892 | |
| 893 | static int |
| 894 | btsco_getdev(void *hdl, struct audio_device *ret) |
| 895 | { |
| 896 | |
| 897 | *ret = btsco_device; |
| 898 | return 0; |
| 899 | } |
| 900 | |
| 901 | static int |
| 902 | btsco_setfd(void *hdl, int fd) |
| 903 | { |
| 904 | DPRINTF("set %s duplex\n" , fd ? "full" : "half" ); |
| 905 | |
| 906 | return 0; |
| 907 | } |
| 908 | |
| 909 | static int |
| 910 | btsco_set_port(void *hdl, mixer_ctrl_t *mc) |
| 911 | { |
| 912 | struct btsco_softc *sc = hdl; |
| 913 | int err = 0; |
| 914 | |
| 915 | DPRINTF("%s dev %d type %d\n" , sc->sc_name, mc->dev, mc->type); |
| 916 | |
| 917 | switch (mc->dev) { |
| 918 | case BTSCO_VGS: |
| 919 | if (mc->type != AUDIO_MIXER_VALUE || |
| 920 | mc->un.value.num_channels != 1) { |
| 921 | err = EINVAL; |
| 922 | break; |
| 923 | } |
| 924 | |
| 925 | sc->sc_vgs = mc->un.value.level[AUDIO_MIXER_LEVEL_MONO]; |
| 926 | break; |
| 927 | |
| 928 | case BTSCO_VGM: |
| 929 | if (mc->type != AUDIO_MIXER_VALUE || |
| 930 | mc->un.value.num_channels != 1) { |
| 931 | err = EINVAL; |
| 932 | break; |
| 933 | } |
| 934 | |
| 935 | sc->sc_vgm = mc->un.value.level[AUDIO_MIXER_LEVEL_MONO]; |
| 936 | break; |
| 937 | |
| 938 | default: |
| 939 | err = EINVAL; |
| 940 | break; |
| 941 | } |
| 942 | |
| 943 | return err; |
| 944 | } |
| 945 | |
| 946 | static int |
| 947 | btsco_get_port(void *hdl, mixer_ctrl_t *mc) |
| 948 | { |
| 949 | struct btsco_softc *sc = hdl; |
| 950 | int err = 0; |
| 951 | |
| 952 | DPRINTF("%s dev %d\n" , sc->sc_name, mc->dev); |
| 953 | |
| 954 | switch (mc->dev) { |
| 955 | case BTSCO_VGS: |
| 956 | mc->type = AUDIO_MIXER_VALUE; |
| 957 | mc->un.value.num_channels = 1; |
| 958 | mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] = sc->sc_vgs; |
| 959 | break; |
| 960 | |
| 961 | case BTSCO_VGM: |
| 962 | mc->type = AUDIO_MIXER_VALUE; |
| 963 | mc->un.value.num_channels = 1; |
| 964 | mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] = sc->sc_vgm; |
| 965 | break; |
| 966 | |
| 967 | default: |
| 968 | err = EINVAL; |
| 969 | break; |
| 970 | } |
| 971 | |
| 972 | return err; |
| 973 | } |
| 974 | |
| 975 | static int |
| 976 | btsco_query_devinfo(void *hdl, mixer_devinfo_t *di) |
| 977 | { |
| 978 | /* struct btsco_softc *sc = hdl; */ |
| 979 | int err = 0; |
| 980 | |
| 981 | switch(di->index) { |
| 982 | case BTSCO_VGS: |
| 983 | di->mixer_class = BTSCO_INPUT_CLASS; |
| 984 | di->next = di->prev = AUDIO_MIXER_LAST; |
| 985 | strcpy(di->label.name, AudioNspeaker); |
| 986 | di->type = AUDIO_MIXER_VALUE; |
| 987 | strcpy(di->un.v.units.name, AudioNvolume); |
| 988 | di->un.v.num_channels = 1; |
| 989 | di->un.v.delta = BTSCO_DELTA; |
| 990 | break; |
| 991 | |
| 992 | case BTSCO_VGM: |
| 993 | di->mixer_class = BTSCO_INPUT_CLASS; |
| 994 | di->next = di->prev = AUDIO_MIXER_LAST; |
| 995 | strcpy(di->label.name, AudioNmicrophone); |
| 996 | di->type = AUDIO_MIXER_VALUE; |
| 997 | strcpy(di->un.v.units.name, AudioNvolume); |
| 998 | di->un.v.num_channels = 1; |
| 999 | di->un.v.delta = BTSCO_DELTA; |
| 1000 | break; |
| 1001 | |
| 1002 | case BTSCO_INPUT_CLASS: |
| 1003 | di->mixer_class = BTSCO_INPUT_CLASS; |
| 1004 | di->next = di->prev = AUDIO_MIXER_LAST; |
| 1005 | strcpy(di->label.name, AudioCinputs); |
| 1006 | di->type = AUDIO_MIXER_CLASS; |
| 1007 | break; |
| 1008 | |
| 1009 | default: |
| 1010 | err = ENXIO; |
| 1011 | break; |
| 1012 | } |
| 1013 | |
| 1014 | return err; |
| 1015 | } |
| 1016 | |
| 1017 | /* |
| 1018 | * Allocate Ring Buffers. |
| 1019 | */ |
| 1020 | static void * |
| 1021 | btsco_allocm(void *hdl, int direction, size_t size) |
| 1022 | { |
| 1023 | struct btsco_softc *sc = hdl; |
| 1024 | void *addr; |
| 1025 | |
| 1026 | DPRINTF("%s: size %d direction %d\n" , sc->sc_name, size, direction); |
| 1027 | |
| 1028 | addr = kmem_alloc(size, KM_SLEEP); |
| 1029 | |
| 1030 | if (addr != NULL && direction == AUMODE_PLAY) { |
| 1031 | sc->sc_tx_buf = addr; |
| 1032 | sc->sc_tx_refcnt = 0; |
| 1033 | } |
| 1034 | |
| 1035 | return addr; |
| 1036 | } |
| 1037 | |
| 1038 | /* |
| 1039 | * Free Ring Buffers. |
| 1040 | * |
| 1041 | * Because we used external memory for the tx mbufs, we dont |
| 1042 | * want to free the memory until all the mbufs are done with |
| 1043 | * |
| 1044 | * Just to be sure, dont free if something is still pending. |
| 1045 | * This would be a memory leak but at least there is a warning.. |
| 1046 | */ |
| 1047 | static void |
| 1048 | btsco_freem(void *hdl, void *addr, size_t size) |
| 1049 | { |
| 1050 | struct btsco_softc *sc = hdl; |
| 1051 | int count = hz / 2; |
| 1052 | |
| 1053 | if (addr == sc->sc_tx_buf) { |
| 1054 | DPRINTF("%s: tx_refcnt=%d\n" , sc->sc_name, sc->sc_tx_refcnt); |
| 1055 | |
| 1056 | sc->sc_tx_buf = NULL; |
| 1057 | |
| 1058 | while (sc->sc_tx_refcnt> 0 && count-- > 0) |
| 1059 | kpause("drain" , false, 1, NULL); |
| 1060 | |
| 1061 | if (sc->sc_tx_refcnt > 0) { |
| 1062 | aprint_error("%s: ring buffer unreleased!\n" , sc->sc_name); |
| 1063 | return; |
| 1064 | } |
| 1065 | } |
| 1066 | |
| 1067 | kmem_free(addr, size); |
| 1068 | } |
| 1069 | |
| 1070 | static int |
| 1071 | btsco_get_props(void *hdl) |
| 1072 | { |
| 1073 | |
| 1074 | return AUDIO_PROP_FULLDUPLEX; |
| 1075 | } |
| 1076 | |
| 1077 | static void |
| 1078 | btsco_get_locks(void *hdl, kmutex_t **intr, kmutex_t **thread) |
| 1079 | { |
| 1080 | struct btsco_softc *sc = hdl; |
| 1081 | |
| 1082 | *intr = &sc->sc_intr_lock; |
| 1083 | *thread = bt_lock; |
| 1084 | } |
| 1085 | |
| 1086 | /* |
| 1087 | * Handle private ioctl. We pass information out about how to talk |
| 1088 | * to the device and mixer. |
| 1089 | */ |
| 1090 | static int |
| 1091 | btsco_dev_ioctl(void *hdl, u_long cmd, void *addr, int flag, |
| 1092 | struct lwp *l) |
| 1093 | { |
| 1094 | struct btsco_softc *sc = hdl; |
| 1095 | struct btsco_info *bi = (struct btsco_info *)addr; |
| 1096 | int err = 0; |
| 1097 | |
| 1098 | DPRINTF("%s cmd 0x%lx flag %d\n" , sc->sc_name, cmd, flag); |
| 1099 | |
| 1100 | switch (cmd) { |
| 1101 | case BTSCO_GETINFO: |
| 1102 | memset(bi, 0, sizeof(*bi)); |
| 1103 | bdaddr_copy(&bi->laddr, &sc->sc_laddr); |
| 1104 | bdaddr_copy(&bi->raddr, &sc->sc_raddr); |
| 1105 | bi->channel = sc->sc_channel; |
| 1106 | bi->vgs = BTSCO_VGS; |
| 1107 | bi->vgm = BTSCO_VGM; |
| 1108 | break; |
| 1109 | |
| 1110 | default: |
| 1111 | err = EPASSTHROUGH; |
| 1112 | break; |
| 1113 | } |
| 1114 | |
| 1115 | return err; |
| 1116 | } |
| 1117 | |
| 1118 | |
| 1119 | /***************************************************************************** |
| 1120 | * |
| 1121 | * misc btsco functions |
| 1122 | * |
| 1123 | */ |
| 1124 | |
| 1125 | /* |
| 1126 | * Our transmit interrupt. This is triggered when a new block is to be |
| 1127 | * sent. We send mtu sized chunks of the block as mbufs with external |
| 1128 | * storage to sco_send_pcb() |
| 1129 | */ |
| 1130 | static void |
| 1131 | btsco_intr(void *arg) |
| 1132 | { |
| 1133 | struct btsco_softc *sc = arg; |
| 1134 | struct mbuf *m; |
| 1135 | uint8_t *block; |
| 1136 | int mlen, size; |
| 1137 | |
| 1138 | DPRINTFN(10, "%s block %p size %d\n" , |
| 1139 | sc->sc_name, sc->sc_tx_block, sc->sc_tx_size); |
| 1140 | |
| 1141 | if (sc->sc_sco == NULL) |
| 1142 | return; /* connection is lost */ |
| 1143 | |
| 1144 | block = sc->sc_tx_block; |
| 1145 | size = sc->sc_tx_size; |
| 1146 | sc->sc_tx_block = NULL; |
| 1147 | sc->sc_tx_size = 0; |
| 1148 | |
| 1149 | mutex_enter(bt_lock); |
| 1150 | while (size > 0) { |
| 1151 | MGETHDR(m, M_DONTWAIT, MT_DATA); |
| 1152 | if (m == NULL) |
| 1153 | break; |
| 1154 | |
| 1155 | mlen = MIN(sc->sc_mtu, size); |
| 1156 | |
| 1157 | /* I think M_DEVBUF is true but not relevant */ |
| 1158 | MEXTADD(m, block, mlen, M_DEVBUF, btsco_extfree, sc); |
| 1159 | if ((m->m_flags & M_EXT) == 0) { |
| 1160 | m_free(m); |
| 1161 | break; |
| 1162 | } |
| 1163 | sc->sc_tx_refcnt++; |
| 1164 | |
| 1165 | m->m_pkthdr.len = m->m_len = mlen; |
| 1166 | sc->sc_tx_pending++; |
| 1167 | |
| 1168 | if (sco_send_pcb(sc->sc_sco, m) > 0) { |
| 1169 | sc->sc_tx_pending--; |
| 1170 | break; |
| 1171 | } |
| 1172 | |
| 1173 | block += mlen; |
| 1174 | size -= mlen; |
| 1175 | } |
| 1176 | mutex_exit(bt_lock); |
| 1177 | } |
| 1178 | |
| 1179 | /* |
| 1180 | * Release the mbuf, we keep a reference count on the tx buffer so |
| 1181 | * that we dont release it before its free. |
| 1182 | */ |
| 1183 | static void |
| 1184 | btsco_extfree(struct mbuf *m, void *addr, size_t size, |
| 1185 | void *arg) |
| 1186 | { |
| 1187 | struct btsco_softc *sc = arg; |
| 1188 | |
| 1189 | if (m != NULL) |
| 1190 | pool_cache_put(mb_cache, m); |
| 1191 | |
| 1192 | sc->sc_tx_refcnt--; |
| 1193 | } |
| 1194 | |