Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/midi/sequencer.c
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1 /*- 2 * Copyright (c) 2003 Mathew Kanner 3 * Copyright (c) 1993 Hannu Savolainen 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 /* 29 * The sequencer personality manager. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/ioccom.h> 38 39 #include <sys/filio.h> 40 #include <sys/lock.h> 41 #include <sys/sockio.h> 42 #include <sys/fcntl.h> 43 #include <sys/tty.h> 44 #include <sys/proc.h> 45 #include <sys/sysctl.h> 46 47 #include <sys/kernel.h> /* for DATA_SET */ 48 49 #include <sys/module.h> 50 #include <sys/conf.h> 51 #include <sys/file.h> 52 #include <sys/uio.h> 53 #include <sys/syslog.h> 54 #include <sys/errno.h> 55 #include <sys/malloc.h> 56 #include <sys/bus.h> 57 #include <machine/resource.h> 58 #include <machine/bus.h> 59 #include <machine/clock.h> /* for DELAY */ 60 #include <sys/soundcard.h> 61 #include <sys/rman.h> 62 #include <sys/mman.h> 63 #include <sys/poll.h> 64 #include <sys/mutex.h> 65 #include <sys/condvar.h> 66 #include <sys/kthread.h> 67 #include <sys/unistd.h> 68 #include <sys/selinfo.h> 69 70 71 #include <dev/sound/midi/midi.h> 72 #include <dev/sound/midi/midiq.h> 73 #include "synth_if.h" 74 75 #include <dev/sound/midi/sequencer.h> 76 77 #define TMR_TIMERBASE 13 78 79 #define SND_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM 80 * synthesizer and MIDI output) */ 81 #define SND_DEV_MUSIC 8 /* /dev/music, level 2 interface */ 82 83 /* Length of a sequencer event. */ 84 #define EV_SZ 8 85 #define IEV_SZ 8 86 87 /* Lookup modes */ 88 #define LOOKUP_EXIST (0) 89 #define LOOKUP_OPEN (1) 90 #define LOOKUP_CLOSE (2) 91 92 #define PCMMKMINOR(u, d, c) \ 93 ((((c) & 0xff) << 16) | (((u) & 0x0f) << 4) | ((d) & 0x0f)) 94 #define MIDIMKMINOR(u, d, c) PCMMKMINOR(u, d, c) 95 #define MIDIUNIT(y) ((minor(y) >> 4) & 0x0f) 96 #define MIDIDEV(y) (minor(y) & 0x0f) 97 98 /* These are the entries to the sequencer driver. */ 99 static d_open_t seq_open; 100 static d_close_t seq_close; 101 static d_ioctl_t seq_ioctl; 102 static d_read_t seq_read; 103 static d_write_t seq_write; 104 static d_poll_t seq_poll; 105 106 static struct cdevsw seq_cdevsw = { 107 .d_version = D_VERSION, 108 .d_open = seq_open, 109 .d_close = seq_close, 110 .d_read = seq_read, 111 .d_write = seq_write, 112 .d_ioctl = seq_ioctl, 113 .d_poll = seq_poll, 114 .d_name = "sequencer", 115 }; 116 117 struct seq_softc { 118 KOBJ_FIELDS; 119 120 struct mtx seq_lock, q_lock; 121 struct cv empty_cv, reset_cv, in_cv, out_cv, state_cv, th_cv; 122 123 MIDIQ_HEAD(, u_char) in_q, out_q; 124 125 u_long flags; 126 /* Flags (protected by flag_mtx of mididev_info) */ 127 int fflags; /* Access mode */ 128 int music; 129 130 int out_water; /* Sequence output threshould */ 131 snd_sync_parm sync_parm; /* AIOSYNC parameter set */ 132 struct thread *sync_thread; /* AIOSYNCing thread */ 133 struct selinfo in_sel, out_sel; 134 int midi_number; 135 struct cdev *seqdev, *musicdev; 136 int unit; 137 int maxunits; 138 kobj_t *midis; 139 int *midi_flags; 140 kobj_t mapper; 141 void *mapper_cookie; 142 struct timeval timerstop, timersub; 143 int timerbase, tempo; 144 int timerrun; 145 int done; 146 int playing; 147 int recording; 148 int busy; 149 int pre_event_timeout; 150 int waiting; 151 }; 152 153 /* 154 * Module specific stuff, including how many sequecers 155 * we currently own. 156 */ 157 158 SYSCTL_NODE(_hw_midi, OID_AUTO, seq, CTLFLAG_RD, 0, "Midi sequencer"); 159 160 int seq_debug; 161 /* XXX: should this be moved into debug.midi? */ 162 SYSCTL_INT(_hw_midi_seq, OID_AUTO, debug, CTLFLAG_RW, &seq_debug, 0, ""); 163 164 midi_cmdtab cmdtab_seqevent[] = { 165 {SEQ_NOTEOFF, "SEQ_NOTEOFF"}, 166 {SEQ_NOTEON, "SEQ_NOTEON"}, 167 {SEQ_WAIT, "SEQ_WAIT"}, 168 {SEQ_PGMCHANGE, "SEQ_PGMCHANGE"}, 169 {SEQ_SYNCTIMER, "SEQ_SYNCTIMER"}, 170 {SEQ_MIDIPUTC, "SEQ_MIDIPUTC"}, 171 {SEQ_DRUMON, "SEQ_DRUMON"}, 172 {SEQ_DRUMOFF, "SEQ_DRUMOFF"}, 173 {SEQ_ECHO, "SEQ_ECHO"}, 174 {SEQ_AFTERTOUCH, "SEQ_AFTERTOUCH"}, 175 {SEQ_CONTROLLER, "SEQ_CONTROLLER"}, 176 {SEQ_BALANCE, "SEQ_BALANCE"}, 177 {SEQ_VOLMODE, "SEQ_VOLMODE"}, 178 {SEQ_FULLSIZE, "SEQ_FULLSIZE"}, 179 {SEQ_PRIVATE, "SEQ_PRIVATE"}, 180 {SEQ_EXTENDED, "SEQ_EXTENDED"}, 181 {EV_SEQ_LOCAL, "EV_SEQ_LOCAL"}, 182 {EV_TIMING, "EV_TIMING"}, 183 {EV_CHN_COMMON, "EV_CHN_COMMON"}, 184 {EV_CHN_VOICE, "EV_CHN_VOICE"}, 185 {EV_SYSEX, "EV_SYSEX"}, 186 {-1, NULL}, 187 }; 188 189 midi_cmdtab cmdtab_seqioctl[] = { 190 {SNDCTL_SEQ_RESET, "SNDCTL_SEQ_RESET"}, 191 {SNDCTL_SEQ_SYNC, "SNDCTL_SEQ_SYNC"}, 192 {SNDCTL_SYNTH_INFO, "SNDCTL_SYNTH_INFO"}, 193 {SNDCTL_SEQ_CTRLRATE, "SNDCTL_SEQ_CTRLRATE"}, 194 {SNDCTL_SEQ_GETOUTCOUNT, "SNDCTL_SEQ_GETOUTCOUNT"}, 195 {SNDCTL_SEQ_GETINCOUNT, "SNDCTL_SEQ_GETINCOUNT"}, 196 {SNDCTL_SEQ_PERCMODE, "SNDCTL_SEQ_PERCMODE"}, 197 {SNDCTL_FM_LOAD_INSTR, "SNDCTL_FM_LOAD_INSTR"}, 198 {SNDCTL_SEQ_TESTMIDI, "SNDCTL_SEQ_TESTMIDI"}, 199 {SNDCTL_SEQ_RESETSAMPLES, "SNDCTL_SEQ_RESETSAMPLES"}, 200 {SNDCTL_SEQ_NRSYNTHS, "SNDCTL_SEQ_NRSYNTHS"}, 201 {SNDCTL_SEQ_NRMIDIS, "SNDCTL_SEQ_NRMIDIS"}, 202 {SNDCTL_SEQ_GETTIME, "SNDCTL_SEQ_GETTIME"}, 203 {SNDCTL_MIDI_INFO, "SNDCTL_MIDI_INFO"}, 204 {SNDCTL_SEQ_THRESHOLD, "SNDCTL_SEQ_THRESHOLD"}, 205 {SNDCTL_SYNTH_MEMAVL, "SNDCTL_SYNTH_MEMAVL"}, 206 {SNDCTL_FM_4OP_ENABLE, "SNDCTL_FM_4OP_ENABLE"}, 207 {SNDCTL_PMGR_ACCESS, "SNDCTL_PMGR_ACCESS"}, 208 {SNDCTL_SEQ_PANIC, "SNDCTL_SEQ_PANIC"}, 209 {SNDCTL_SEQ_OUTOFBAND, "SNDCTL_SEQ_OUTOFBAND"}, 210 {SNDCTL_TMR_TIMEBASE, "SNDCTL_TMR_TIMEBASE"}, 211 {SNDCTL_TMR_START, "SNDCTL_TMR_START"}, 212 {SNDCTL_TMR_STOP, "SNDCTL_TMR_STOP"}, 213 {SNDCTL_TMR_CONTINUE, "SNDCTL_TMR_CONTINUE"}, 214 {SNDCTL_TMR_TEMPO, "SNDCTL_TMR_TEMPO"}, 215 {SNDCTL_TMR_SOURCE, "SNDCTL_TMR_SOURCE"}, 216 {SNDCTL_TMR_METRONOME, "SNDCTL_TMR_METRONOME"}, 217 {SNDCTL_TMR_SELECT, "SNDCTL_TMR_SELECT"}, 218 {SNDCTL_MIDI_PRETIME, "SNDCTL_MIDI_PRETIME"}, 219 {AIONWRITE, "AIONWRITE"}, 220 {AIOGSIZE, "AIOGSIZE"}, 221 {AIOSSIZE, "AIOSSIZE"}, 222 {AIOGFMT, "AIOGFMT"}, 223 {AIOSFMT, "AIOSFMT"}, 224 {AIOGMIX, "AIOGMIX"}, 225 {AIOSMIX, "AIOSMIX"}, 226 {AIOSTOP, "AIOSTOP"}, 227 {AIOSYNC, "AIOSYNC"}, 228 {AIOGCAP, "AIOGCAP"}, 229 {-1, NULL}, 230 }; 231 232 midi_cmdtab cmdtab_timer[] = { 233 {TMR_WAIT_REL, "TMR_WAIT_REL"}, 234 {TMR_WAIT_ABS, "TMR_WAIT_ABS"}, 235 {TMR_STOP, "TMR_STOP"}, 236 {TMR_START, "TMR_START"}, 237 {TMR_CONTINUE, "TMR_CONTINUE"}, 238 {TMR_TEMPO, "TMR_TEMPO"}, 239 {TMR_ECHO, "TMR_ECHO"}, 240 {TMR_CLOCK, "TMR_CLOCK"}, 241 {TMR_SPP, "TMR_SPP"}, 242 {TMR_TIMESIG, "TMR_TIMESIG"}, 243 {-1, NULL}, 244 }; 245 246 midi_cmdtab cmdtab_seqcv[] = { 247 {MIDI_NOTEOFF, "MIDI_NOTEOFF"}, 248 {MIDI_NOTEON, "MIDI_NOTEON"}, 249 {MIDI_KEY_PRESSURE, "MIDI_KEY_PRESSURE"}, 250 {-1, NULL}, 251 }; 252 253 midi_cmdtab cmdtab_seqccmn[] = { 254 {MIDI_CTL_CHANGE, "MIDI_CTL_CHANGE"}, 255 {MIDI_PGM_CHANGE, "MIDI_PGM_CHANGE"}, 256 {MIDI_CHN_PRESSURE, "MIDI_CHN_PRESSURE"}, 257 {MIDI_PITCH_BEND, "MIDI_PITCH_BEND"}, 258 {MIDI_SYSTEM_PREFIX, "MIDI_SYSTEM_PREFIX"}, 259 {-1, NULL}, 260 }; 261 262 /* 263 * static const char *mpu401_mprovider(kobj_t obj, struct mpu401 *m); 264 */ 265 266 static kobj_method_t seq_methods[] = { 267 /* KOBJMETHOD(mpu_provider,mpu401_mprovider), */ 268 {0, 0} 269 }; 270 271 DEFINE_CLASS(sequencer, seq_methods, 0); 272 273 /* The followings are the local function. */ 274 static int seq_convertold(u_char *event, u_char *out); 275 276 /* 277 * static void seq_midiinput(struct seq_softc * scp, void *md); 278 */ 279 static void seq_reset(struct seq_softc *scp); 280 static int seq_sync(struct seq_softc *scp); 281 282 static int seq_processevent(struct seq_softc *scp, u_char *event); 283 284 static int seq_timing(struct seq_softc *scp, u_char *event); 285 static int seq_local(struct seq_softc *scp, u_char *event); 286 287 static int seq_chnvoice(struct seq_softc *scp, kobj_t md, u_char *event); 288 static int seq_chncommon(struct seq_softc *scp, kobj_t md, u_char *event); 289 static int seq_sysex(struct seq_softc *scp, kobj_t md, u_char *event); 290 291 static int seq_fetch_mid(struct seq_softc *scp, int unit, kobj_t *md); 292 void seq_copytoinput(struct seq_softc *scp, u_char *event, int len); 293 int seq_modevent(module_t mod, int type, void *data); 294 struct seq_softc *seqs[10]; 295 static struct mtx seqinfo_mtx; 296 static u_long nseq = 0; 297 298 static void timer_start(struct seq_softc *t); 299 static void timer_stop(struct seq_softc *t); 300 static void timer_setvals(struct seq_softc *t, int tempo, int timerbase); 301 static void timer_wait(struct seq_softc *t, int ticks, int wait_abs); 302 static int timer_now(struct seq_softc *t); 303 304 305 static void 306 timer_start(struct seq_softc *t) 307 { 308 t->timerrun = 1; 309 getmicrotime(&t->timersub); 310 } 311 312 static void 313 timer_continue(struct seq_softc *t) 314 { 315 struct timeval now; 316 317 if (t->timerrun == 1) 318 return; 319 t->timerrun = 1; 320 getmicrotime(&now); 321 timevalsub(&now, &t->timerstop); 322 timevaladd(&t->timersub, &now); 323 } 324 325 static void 326 timer_stop(struct seq_softc *t) 327 { 328 t->timerrun = 0; 329 getmicrotime(&t->timerstop); 330 } 331 332 static void 333 timer_setvals(struct seq_softc *t, int tempo, int timerbase) 334 { 335 t->tempo = tempo; 336 t->timerbase = timerbase; 337 } 338 339 static void 340 timer_wait(struct seq_softc *t, int ticks, int wait_abs) 341 { 342 struct timeval now, when; 343 int ret; 344 unsigned long long i; 345 346 while (t->timerrun == 0) { 347 SEQ_DEBUG(2, printf("Timer wait when timer isn't running\n")); 348 /* 349 * The old sequencer used timeouts that only increased 350 * the timer when the timer was running. 351 * Hence the sequencer would stick (?) if the 352 * timer was disabled. 353 */ 354 cv_wait(&t->reset_cv, &t->seq_lock); 355 if (t->playing == 0) 356 return; 357 } 358 359 i = ticks * 60ull * 1000000ull / (t->tempo * t->timerbase); 360 361 when.tv_sec = i / 1000000; 362 when.tv_usec = i % 1000000; 363 364 #if 0 365 printf("timer_wait tempo %d timerbase %d ticks %d abs %d u_sec %llu\n", 366 t->tempo, t->timerbase, ticks, wait_abs, i); 367 #endif 368 369 if (wait_abs != 0) { 370 getmicrotime(&now); 371 timevalsub(&now, &t->timersub); 372 timevalsub(&when, &now); 373 } 374 if (when.tv_sec < 0 || when.tv_usec < 0) { 375 SEQ_DEBUG(3, 376 printf("seq_timer error negative time %lds.%06lds\n", 377 (long)when.tv_sec, (long)when.tv_usec)); 378 return; 379 } 380 i = when.tv_sec * 1000000ull; 381 i += when.tv_usec; 382 i *= hz; 383 i /= 1000000ull; 384 #if 0 385 printf("seq_timer usec %llu ticks %llu\n", 386 when.tv_sec * 1000000ull + when.tv_usec, i); 387 #endif 388 t->waiting = 1; 389 ret = cv_timedwait(&t->reset_cv, &t->seq_lock, i + 1); 390 t->waiting = 0; 391 392 if (ret != EWOULDBLOCK) 393 SEQ_DEBUG(3, printf("seq_timer didn't timeout\n")); 394 395 } 396 397 static int 398 timer_now(struct seq_softc *t) 399 { 400 struct timeval now; 401 unsigned long long i; 402 int ret; 403 404 if (t->timerrun == 0) 405 now = t->timerstop; 406 else 407 getmicrotime(&now); 408 409 timevalsub(&now, &t->timersub); 410 411 i = now.tv_sec * 1000000ull; 412 i += now.tv_usec; 413 i *= t->timerbase; 414 /* i /= t->tempo; */ 415 i /= 1000000ull; 416 417 ret = i; 418 /* 419 * printf("timer_now: %llu %d\n", i, ret); 420 */ 421 422 return ret; 423 } 424 425 static void 426 seq_eventthread(void *arg) 427 { 428 struct seq_softc *scp = arg; 429 char event[EV_SZ]; 430 431 mtx_lock(&scp->seq_lock); 432 SEQ_DEBUG(2, printf("seq_eventthread started\n")); 433 while (scp->done == 0) { 434 restart: 435 while (scp->playing == 0) { 436 cv_wait(&scp->state_cv, &scp->seq_lock); 437 if (scp->done) 438 goto done; 439 } 440 441 while (MIDIQ_EMPTY(scp->out_q)) { 442 cv_broadcast(&scp->empty_cv); 443 cv_wait(&scp->out_cv, &scp->seq_lock); 444 if (scp->playing == 0) 445 goto restart; 446 if (scp->done) 447 goto done; 448 } 449 450 MIDIQ_DEQ(scp->out_q, event, EV_SZ); 451 452 if (MIDIQ_AVAIL(scp->out_q) < scp->out_water) { 453 cv_broadcast(&scp->out_cv); 454 selwakeup(&scp->out_sel); 455 } 456 seq_processevent(scp, event); 457 } 458 459 done: 460 cv_broadcast(&scp->th_cv); 461 mtx_unlock(&scp->seq_lock); 462 mtx_lock(&Giant); 463 SEQ_DEBUG(2, printf("seq_eventthread finished\n")); 464 kthread_exit(0); 465 } 466 467 /* 468 * seq_processevent: This maybe called by the event thread or the IOCTL 469 * handler for queued and out of band events respectively. 470 */ 471 static int 472 seq_processevent(struct seq_softc *scp, u_char *event) 473 { 474 int ret; 475 kobj_t m; 476 477 ret = 0; 478 479 if (event[0] == EV_SEQ_LOCAL) 480 ret = seq_local(scp, event); 481 else if (event[0] == EV_TIMING) 482 ret = seq_timing(scp, event); 483 else if (event[0] != EV_CHN_VOICE && 484 event[0] != EV_CHN_COMMON && 485 event[0] != EV_SYSEX && 486 event[0] != SEQ_MIDIPUTC) { 487 ret = 1; 488 SEQ_DEBUG(2, printf("seq_processevent not known %d\n", 489 event[0])); 490 } else if (seq_fetch_mid(scp, event[1], &m) != 0) { 491 ret = 1; 492 SEQ_DEBUG(2, printf("seq_processevent midi unit not found %d\n", 493 event[1])); 494 } else 495 switch (event[0]) { 496 case EV_CHN_VOICE: 497 ret = seq_chnvoice(scp, m, event); 498 break; 499 case EV_CHN_COMMON: 500 ret = seq_chncommon(scp, m, event); 501 break; 502 case EV_SYSEX: 503 ret = seq_sysex(scp, m, event); 504 break; 505 case SEQ_MIDIPUTC: 506 mtx_unlock(&scp->seq_lock); 507 ret = SYNTH_WRITERAW(m, &event[2], 1); 508 mtx_lock(&scp->seq_lock); 509 break; 510 } 511 return ret; 512 } 513 514 static int 515 seq_addunit(void) 516 { 517 struct seq_softc *scp; 518 int ret; 519 u_char *buf; 520 521 /* Allocate the softc. */ 522 ret = ENOMEM; 523 scp = malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT | M_ZERO); 524 if (scp == NULL) { 525 SEQ_DEBUG(1, printf("seq_addunit: softc allocation failed.\n")); 526 goto err; 527 } 528 kobj_init((kobj_t)scp, &sequencer_class); 529 530 buf = malloc(sizeof(*buf) * EV_SZ * 1024, M_TEMP, M_NOWAIT | M_ZERO); 531 if (buf == NULL) 532 goto err; 533 MIDIQ_INIT(scp->in_q, buf, EV_SZ * 1024); 534 buf = malloc(sizeof(*buf) * EV_SZ * 1024, M_TEMP, M_NOWAIT | M_ZERO); 535 if (buf == NULL) 536 goto err; 537 MIDIQ_INIT(scp->out_q, buf, EV_SZ * 1024); 538 ret = EINVAL; 539 540 scp->midis = malloc(sizeof(kobj_t) * 32, M_TEMP, M_NOWAIT | M_ZERO); 541 scp->midi_flags = malloc(sizeof(*scp->midi_flags) * 32, M_TEMP, 542 M_NOWAIT | M_ZERO); 543 544 if (scp->midis == NULL || scp->midi_flags == NULL) 545 goto err; 546 547 scp->flags = 0; 548 549 mtx_init(&scp->seq_lock, "seqflq", NULL, 0); 550 cv_init(&scp->state_cv, "seqstate"); 551 cv_init(&scp->empty_cv, "seqempty"); 552 cv_init(&scp->reset_cv, "seqtimer"); 553 cv_init(&scp->out_cv, "seqqout"); 554 cv_init(&scp->in_cv, "seqqin"); 555 cv_init(&scp->th_cv, "seqstart"); 556 557 /* 558 * Init the damn timer 559 */ 560 561 scp->mapper = midimapper_addseq(scp, &scp->unit, &scp->mapper_cookie); 562 if (scp->mapper == NULL) 563 goto err; 564 565 scp->seqdev = make_dev(&seq_cdevsw, 566 MIDIMKMINOR(scp->unit, SND_DEV_SEQ, 0), UID_ROOT, 567 GID_WHEEL, 0666, "sequencer%d", scp->unit); 568 569 scp->musicdev = make_dev(&seq_cdevsw, 570 MIDIMKMINOR(scp->unit, SND_DEV_MUSIC, 0), UID_ROOT, 571 GID_WHEEL, 0666, "music%d", scp->unit); 572 573 if (scp->seqdev == NULL || scp->musicdev == NULL) 574 goto err; 575 /* 576 * TODO: Add to list of sequencers this module provides 577 */ 578 579 ret = kthread_create(seq_eventthread, scp, NULL, RFHIGHPID, 0, 580 "sequencer %02d", scp->unit); 581 582 if (ret) 583 goto err; 584 585 scp->seqdev->si_drv1 = scp->musicdev->si_drv1 = scp; 586 587 SEQ_DEBUG(2, printf("sequencer %d created scp %p\n", scp->unit, scp)); 588 589 ret = 0; 590 591 mtx_lock(&seqinfo_mtx); 592 seqs[nseq++] = scp; 593 mtx_unlock(&seqinfo_mtx); 594 595 goto ok; 596 597 err: 598 if (scp != NULL) { 599 if (scp->seqdev != NULL) 600 destroy_dev(scp->seqdev); 601 if (scp->musicdev != NULL) 602 destroy_dev(scp->musicdev); 603 /* 604 * TODO: Destroy mutex and cv 605 */ 606 if (scp->midis != NULL) 607 free(scp->midis, M_TEMP); 608 if (scp->midi_flags != NULL) 609 free(scp->midi_flags, M_TEMP); 610 if (scp->out_q.b) 611 free(scp->out_q.b, M_TEMP); 612 if (scp->in_q.b) 613 free(scp->in_q.b, M_TEMP); 614 free(scp, M_DEVBUF); 615 } 616 ok: 617 return ret; 618 } 619 620 static int 621 seq_delunit(int unit) 622 { 623 struct seq_softc *scp = seqs[unit]; 624 int i; 625 626 //SEQ_DEBUG(4, printf("seq_delunit: %d\n", unit)); 627 SEQ_DEBUG(1, printf("seq_delunit: 1 \n")); 628 mtx_lock(&scp->seq_lock); 629 630 scp->playing = 0; 631 scp->done = 1; 632 cv_broadcast(&scp->out_cv); 633 cv_broadcast(&scp->state_cv); 634 cv_broadcast(&scp->reset_cv); 635 SEQ_DEBUG(1, printf("seq_delunit: 2 \n")); 636 cv_wait(&scp->th_cv, &scp->seq_lock); 637 SEQ_DEBUG(1, printf("seq_delunit: 3.0 \n")); 638 mtx_unlock(&scp->seq_lock); 639 SEQ_DEBUG(1, printf("seq_delunit: 3.1 \n")); 640 641 cv_destroy(&scp->state_cv); 642 SEQ_DEBUG(1, printf("seq_delunit: 4 \n")); 643 cv_destroy(&scp->empty_cv); 644 SEQ_DEBUG(1, printf("seq_delunit: 5 \n")); 645 cv_destroy(&scp->reset_cv); 646 SEQ_DEBUG(1, printf("seq_delunit: 6 \n")); 647 cv_destroy(&scp->out_cv); 648 SEQ_DEBUG(1, printf("seq_delunit: 7 \n")); 649 cv_destroy(&scp->in_cv); 650 SEQ_DEBUG(1, printf("seq_delunit: 8 \n")); 651 cv_destroy(&scp->th_cv); 652 653 SEQ_DEBUG(1, printf("seq_delunit: 10 \n")); 654 if (scp->seqdev) 655 destroy_dev(scp->seqdev); 656 SEQ_DEBUG(1, printf("seq_delunit: 11 \n")); 657 if (scp->musicdev) 658 destroy_dev(scp->musicdev); 659 SEQ_DEBUG(1, printf("seq_delunit: 12 \n")); 660 scp->seqdev = scp->musicdev = NULL; 661 if (scp->midis != NULL) 662 free(scp->midis, M_TEMP); 663 SEQ_DEBUG(1, printf("seq_delunit: 13 \n")); 664 if (scp->midi_flags != NULL) 665 free(scp->midi_flags, M_TEMP); 666 SEQ_DEBUG(1, printf("seq_delunit: 14 \n")); 667 free(scp->out_q.b, M_TEMP); 668 SEQ_DEBUG(1, printf("seq_delunit: 15 \n")); 669 free(scp->in_q.b, M_TEMP); 670 671 SEQ_DEBUG(1, printf("seq_delunit: 16 \n")); 672 673 mtx_destroy(&scp->seq_lock); 674 SEQ_DEBUG(1, printf("seq_delunit: 17 \n")); 675 free(scp, M_DEVBUF); 676 677 mtx_lock(&seqinfo_mtx); 678 for (i = unit; i < (nseq - 1); i++) 679 seqs[i] = seqs[i + 1]; 680 nseq--; 681 mtx_unlock(&seqinfo_mtx); 682 683 return 0; 684 } 685 686 int 687 seq_modevent(module_t mod, int type, void *data) 688 { 689 int retval, r; 690 691 retval = 0; 692 693 switch (type) { 694 case MOD_LOAD: 695 mtx_init(&seqinfo_mtx, "seqmod", NULL, 0); 696 retval = seq_addunit(); 697 break; 698 699 case MOD_UNLOAD: 700 while (nseq) { 701 r = seq_delunit(nseq - 1); 702 if (r) { 703 retval = r; 704 break; 705 } 706 } 707 if (nseq == 0) { 708 retval = 0; 709 mtx_destroy(&seqinfo_mtx); 710 } 711 break; 712 713 default: 714 break; 715 } 716 717 return retval; 718 } 719 720 static int 721 seq_fetch_mid(struct seq_softc *scp, int unit, kobj_t *md) 722 { 723 724 if (unit > scp->midi_number || unit < 0) 725 return EINVAL; 726 727 *md = scp->midis[unit]; 728 729 return 0; 730 } 731 732 int 733 seq_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 734 { 735 struct seq_softc *scp = i_dev->si_drv1; 736 int i; 737 738 if (scp == NULL) 739 return ENXIO; 740 741 SEQ_DEBUG(3, printf("seq_open: scp %p unit %d, flags 0x%x.\n", 742 scp, scp->unit, flags)); 743 744 /* 745 * Mark this device busy. 746 */ 747 748 mtx_lock(&scp->seq_lock); 749 if (scp->busy) { 750 mtx_unlock(&scp->seq_lock); 751 SEQ_DEBUG(2, printf("seq_open: unit %d is busy.\n", scp->unit)); 752 return EBUSY; 753 } 754 scp->fflags = flags; 755 /* 756 if ((scp->fflags & O_NONBLOCK) != 0) 757 scp->flags |= SEQ_F_NBIO; 758 */ 759 scp->music = MIDIDEV(i_dev) == SND_DEV_MUSIC; 760 761 /* 762 * Enumerate the available midi devices 763 */ 764 scp->midi_number = 0; 765 scp->maxunits = midimapper_open(scp->mapper, &scp->mapper_cookie); 766 767 if (scp->maxunits == 0) 768 SEQ_DEBUG(2, printf("seq_open: no midi devices\n")); 769 770 for (i = 0; i < scp->maxunits; i++) { 771 scp->midis[scp->midi_number] = 772 midimapper_fetch_synth(scp->mapper, scp->mapper_cookie, i); 773 if (scp->midis[scp->midi_number]) { 774 if (SYNTH_OPEN(scp->midis[scp->midi_number], scp, 775 scp->fflags) != 0) 776 scp->midis[scp->midi_number] = NULL; 777 else { 778 scp->midi_flags[scp->midi_number] = 779 SYNTH_QUERY(scp->midis[scp->midi_number]); 780 scp->midi_number++; 781 } 782 } 783 } 784 785 timer_setvals(scp, 60, 100); 786 787 timer_start(scp); 788 timer_stop(scp); 789 /* 790 * actually, if we're in rdonly mode, we should start the timer 791 */ 792 /* 793 * TODO: Handle recording now 794 */ 795 796 scp->out_water = MIDIQ_SIZE(scp->out_q) / 2; 797 798 scp->busy = 1; 799 mtx_unlock(&scp->seq_lock); 800 801 SEQ_DEBUG(2, printf("seq_open: opened, mode %s.\n", 802 scp->music ? "music" : "sequencer")); 803 SEQ_DEBUG(2, 804 printf("Sequencer %d %p opened maxunits %d midi_number %d:\n", 805 scp->unit, scp, scp->maxunits, scp->midi_number)); 806 for (i = 0; i < scp->midi_number; i++) 807 SEQ_DEBUG(3, printf(" midi %d %p\n", i, scp->midis[i])); 808 809 return 0; 810 } 811 812 /* 813 * seq_close 814 */ 815 int 816 seq_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 817 { 818 int i; 819 struct seq_softc *scp = i_dev->si_drv1; 820 int ret; 821 822 if (scp == NULL) 823 return ENXIO; 824 825 SEQ_DEBUG(2, printf("seq_close: unit %d.\n", scp->unit)); 826 827 mtx_lock(&scp->seq_lock); 828 829 ret = ENXIO; 830 if (scp->busy == 0) 831 goto err; 832 833 seq_reset(scp); 834 seq_sync(scp); 835 836 for (i = 0; i < scp->midi_number; i++) 837 if (scp->midis[i]) 838 SYNTH_CLOSE(scp->midis[i]); 839 840 midimapper_close(scp->mapper, scp->mapper_cookie); 841 842 timer_stop(scp); 843 844 scp->busy = 0; 845 ret = 0; 846 847 err: 848 SEQ_DEBUG(3, printf("seq_close: closed ret = %d.\n", ret)); 849 mtx_unlock(&scp->seq_lock); 850 return ret; 851 } 852 853 int 854 seq_read(struct cdev *i_dev, struct uio *uio, int ioflag) 855 { 856 int retval, used; 857 struct seq_softc *scp = i_dev->si_drv1; 858 859 #define SEQ_RSIZE 32 860 u_char buf[SEQ_RSIZE]; 861 862 if (scp == NULL) 863 return ENXIO; 864 865 SEQ_DEBUG(7, printf("seq_read: unit %d, resid %d.\n", 866 scp->unit, uio->uio_resid)); 867 868 mtx_lock(&scp->seq_lock); 869 if ((scp->fflags & FREAD) == 0) { 870 SEQ_DEBUG(2, printf("seq_read: unit %d is not for reading.\n", 871 scp->unit)); 872 retval = EIO; 873 goto err1; 874 } 875 /* 876 * Begin recording. 877 */ 878 /* 879 * if ((scp->flags & SEQ_F_READING) == 0) 880 */ 881 /* 882 * TODO, start recording if not alread 883 */ 884 885 /* 886 * I think the semantics are to return as soon 887 * as possible. 888 * Second thought, it doens't seem like midimoutain 889 * expects that at all. 890 * TODO: Look up in some sort of spec 891 */ 892 893 while (uio->uio_resid > 0) { 894 while (MIDIQ_EMPTY(scp->in_q)) { 895 retval = EWOULDBLOCK; 896 /* 897 * I wish I knew which one to care about 898 */ 899 900 if (scp->fflags & O_NONBLOCK) 901 goto err1; 902 if (ioflag & O_NONBLOCK) 903 goto err1; 904 905 retval = cv_wait_sig(&scp->in_cv, &scp->seq_lock); 906 if (retval == EINTR) 907 goto err1; 908 } 909 910 used = MIN(MIDIQ_LEN(scp->in_q), uio->uio_resid); 911 used = MIN(used, SEQ_RSIZE); 912 913 SEQ_DEBUG(8, printf("midiread: uiomove cc=%d\n", used)); 914 MIDIQ_DEQ(scp->in_q, buf, used); 915 retval = uiomove(buf, used, uio); 916 if (retval) 917 goto err1; 918 } 919 920 retval = 0; 921 err1: 922 mtx_unlock(&scp->seq_lock); 923 SEQ_DEBUG(6, printf("seq_read: ret %d, resid %d.\n", 924 retval, uio->uio_resid)); 925 926 return retval; 927 } 928 929 int 930 seq_write(struct cdev *i_dev, struct uio *uio, int ioflag) 931 { 932 u_char event[EV_SZ], newevent[EV_SZ], ev_code; 933 struct seq_softc *scp = i_dev->si_drv1; 934 int retval; 935 int used; 936 937 SEQ_DEBUG(7, printf("seq_write: unit %d, resid %d.\n", 938 scp->unit, uio->uio_resid)); 939 940 if (scp == NULL) 941 return ENXIO; 942 943 mtx_lock(&scp->seq_lock); 944 945 if ((scp->fflags & FWRITE) == 0) { 946 SEQ_DEBUG(2, printf("seq_write: unit %d is not for writing.\n", 947 scp->unit)); 948 retval = EIO; 949 goto err0; 950 } 951 while (uio->uio_resid > 0) { 952 while (MIDIQ_AVAIL(scp->out_q) == 0) { 953 retval = EWOULDBLOCK; 954 if (scp->fflags & O_NONBLOCK) 955 goto err0; 956 if (ioflag & O_NONBLOCK) 957 goto err0; 958 SEQ_DEBUG(8, printf("seq_write cvwait\n")); 959 960 scp->playing = 1; 961 cv_broadcast(&scp->out_cv); 962 cv_broadcast(&scp->state_cv); 963 964 retval = cv_wait_sig(&scp->out_cv, &scp->seq_lock); 965 /* 966 * We slept, maybe things have changed since last 967 * dying check 968 */ 969 if (retval == EINTR) 970 goto err0; 971 #if 0 972 /* 973 * Useless test 974 */ 975 if (scp != i_dev->si_drv1) 976 retval = ENXIO; 977 #endif 978 } 979 980 used = MIN(uio->uio_resid, 4); 981 982 SEQ_DEBUG(8, printf("seqout: resid %d len %jd avail %jd\n", 983 uio->uio_resid, (intmax_t)MIDIQ_LEN(scp->out_q), 984 (intmax_t)MIDIQ_AVAIL(scp->out_q))); 985 986 if (used != 4) { 987 retval = ENXIO; 988 goto err0; 989 } 990 retval = uiomove(event, used, uio); 991 if (retval) 992 goto err0; 993 994 ev_code = event[0]; 995 SEQ_DEBUG(8, printf("seq_write: unit %d, event %s.\n", 996 scp->unit, midi_cmdname(ev_code, cmdtab_seqevent))); 997 998 /* Have a look at the event code. */ 999 if (ev_code == SEQ_FULLSIZE) { 1000 1001 /* 1002 * TODO: restore code for SEQ_FULLSIZE 1003 */ 1004 #if 0 1005 /* 1006 * A long event, these are the patches/samples for a 1007 * synthesizer. 1008 */ 1009 midiunit = *(u_short *)&event[2]; 1010 mtx_lock(&sd->seq_lock); 1011 ret = lookup_mididev(scp, midiunit, LOOKUP_OPEN, &md); 1012 mtx_unlock(&sd->seq_lock); 1013 if (ret != 0) 1014 return (ret); 1015 1016 SEQ_DEBUG(printf("seq_write: loading a patch to the unit %d.\n", midiunit)); 1017 1018 ret = md->synth.loadpatch(md, *(short *)&event[0], buf, 1019 p + 4, count, 0); 1020 return (ret); 1021 #else 1022 /* 1023 * For now, just flush the darn buffer 1024 */ 1025 SEQ_DEBUG(2, 1026 printf("seq_write: SEQ_FULLSIZE flusing buffer.\n")); 1027 while (uio->uio_resid > 0) { 1028 retval = uiomove(event, EV_SZ, uio); 1029 if (retval) 1030 goto err0; 1031 1032 } 1033 retval = 0; 1034 goto err0; 1035 #endif 1036 } 1037 retval = EINVAL; 1038 if (ev_code >= 128) { 1039 1040 /* 1041 * Some sort of an extended event. The size is eight 1042 * bytes. scoop extra info. 1043 */ 1044 if (scp->music && ev_code == SEQ_EXTENDED) { 1045 SEQ_DEBUG(2, printf("seq_write: invalid level two event %x.\n", ev_code)); 1046 goto err0; 1047 } 1048 if (uiomove((caddr_t)&event[4], 4, uio)) { 1049 SEQ_DEBUG(2, 1050 printf("seq_write: user memory mangled?\n")); 1051 goto err0; 1052 } 1053 } else { 1054 /* 1055 * Size four event. 1056 */ 1057 if (scp->music) { 1058 SEQ_DEBUG(2, printf("seq_write: four byte event in music mode.\n")); 1059 goto err0; 1060 } 1061 } 1062 if (ev_code == SEQ_MIDIPUTC) { 1063 /* 1064 * TODO: event[2] is unit number to receive char. 1065 * Range check it. 1066 */ 1067 } 1068 if (scp->music) { 1069 #ifdef not_ever_ever 1070 if (event[0] == EV_TIMING && 1071 (event[1] == TMR_START || event[1] == TMR_STOP)) { 1072 /* 1073 * For now, try to make midimoutain work by 1074 * forcing these events to be processed 1075 * immediatly. 1076 */ 1077 seq_processevent(scp, event); 1078 } else 1079 MIDIQ_ENQ(scp->out_q, event, EV_SZ); 1080 #else 1081 MIDIQ_ENQ(scp->out_q, event, EV_SZ); 1082 #endif 1083 } else { 1084 if (seq_convertold(event, newevent) > 0) 1085 MIDIQ_ENQ(scp->out_q, newevent, EV_SZ); 1086 #if 0 1087 else 1088 goto err0; 1089 #endif 1090 } 1091 1092 } 1093 1094 scp->playing = 1; 1095 cv_broadcast(&scp->state_cv); 1096 cv_broadcast(&scp->out_cv); 1097 1098 retval = 0; 1099 1100 err0: 1101 SEQ_DEBUG(6, 1102 printf("seq_write done: leftover buffer length %d retval %d\n", 1103 uio->uio_resid, retval)); 1104 mtx_unlock(&scp->seq_lock); 1105 return retval; 1106 } 1107 1108 int 1109 seq_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1110 struct thread *td) 1111 { 1112 int midiunit, ret, tmp; 1113 struct seq_softc *scp = i_dev->si_drv1; 1114 struct synth_info *synthinfo; 1115 struct midi_info *midiinfo; 1116 u_char event[EV_SZ]; 1117 u_char newevent[EV_SZ]; 1118 1119 kobj_t md; 1120 1121 /* 1122 * struct snd_size *sndsize; 1123 */ 1124 1125 if (scp == NULL) 1126 return ENXIO; 1127 1128 SEQ_DEBUG(6, printf("seq_ioctl: unit %d, cmd %s.\n", 1129 scp->unit, midi_cmdname(cmd, cmdtab_seqioctl))); 1130 1131 ret = 0; 1132 1133 switch (cmd) { 1134 case SNDCTL_SEQ_GETTIME: 1135 /* 1136 * ioctl needed by libtse 1137 */ 1138 mtx_lock(&scp->seq_lock); 1139 *(int *)arg = timer_now(scp); 1140 mtx_unlock(&scp->seq_lock); 1141 SEQ_DEBUG(6, printf("seq_ioctl: gettime %d.\n", *(int *)arg)); 1142 ret = 0; 1143 break; 1144 case SNDCTL_TMR_METRONOME: 1145 /* fallthrough */ 1146 case SNDCTL_TMR_SOURCE: 1147 /* 1148 * Not implemented 1149 */ 1150 ret = 0; 1151 break; 1152 case SNDCTL_TMR_TEMPO: 1153 event[1] = TMR_TEMPO; 1154 event[4] = *(int *)arg & 0xFF; 1155 event[5] = (*(int *)arg >> 8) & 0xFF; 1156 event[6] = (*(int *)arg >> 16) & 0xFF; 1157 event[7] = (*(int *)arg >> 24) & 0xFF; 1158 goto timerevent; 1159 case SNDCTL_TMR_TIMEBASE: 1160 event[1] = TMR_TIMERBASE; 1161 event[4] = *(int *)arg & 0xFF; 1162 event[5] = (*(int *)arg >> 8) & 0xFF; 1163 event[6] = (*(int *)arg >> 16) & 0xFF; 1164 event[7] = (*(int *)arg >> 24) & 0xFF; 1165 goto timerevent; 1166 case SNDCTL_TMR_START: 1167 event[1] = TMR_START; 1168 goto timerevent; 1169 case SNDCTL_TMR_STOP: 1170 event[1] = TMR_STOP; 1171 goto timerevent; 1172 case SNDCTL_TMR_CONTINUE: 1173 event[1] = TMR_CONTINUE; 1174 timerevent: 1175 event[0] = EV_TIMING; 1176 mtx_lock(&scp->seq_lock); 1177 if (!scp->music) { 1178 ret = EINVAL; 1179 mtx_unlock(&scp->seq_lock); 1180 break; 1181 } 1182 seq_processevent(scp, event); 1183 mtx_unlock(&scp->seq_lock); 1184 break; 1185 case SNDCTL_TMR_SELECT: 1186 SEQ_DEBUG(2, 1187 printf("seq_ioctl: SNDCTL_TMR_SELECT not supported\n")); 1188 ret = EINVAL; 1189 break; 1190 case SNDCTL_SEQ_SYNC: 1191 if (mode == O_RDONLY) { 1192 ret = 0; 1193 break; 1194 } 1195 mtx_lock(&scp->seq_lock); 1196 ret = seq_sync(scp); 1197 mtx_unlock(&scp->seq_lock); 1198 break; 1199 case SNDCTL_SEQ_PANIC: 1200 /* fallthrough */ 1201 case SNDCTL_SEQ_RESET: 1202 /* 1203 * SNDCTL_SEQ_PANIC == SNDCTL_SEQ_RESET 1204 */ 1205 mtx_lock(&scp->seq_lock); 1206 seq_reset(scp); 1207 mtx_unlock(&scp->seq_lock); 1208 ret = 0; 1209 break; 1210 case SNDCTL_SEQ_TESTMIDI: 1211 mtx_lock(&scp->seq_lock); 1212 /* 1213 * TODO: SNDCTL_SEQ_TESTMIDI now means "can I write to the 1214 * device?". 1215 */ 1216 mtx_unlock(&scp->seq_lock); 1217 break; 1218 #if 0 1219 case SNDCTL_SEQ_GETINCOUNT: 1220 if (mode == O_WRONLY) 1221 *(int *)arg = 0; 1222 else { 1223 mtx_lock(&scp->seq_lock); 1224 *(int *)arg = scp->in_q.rl; 1225 mtx_unlock(&scp->seq_lock); 1226 SEQ_DEBUG(printf("seq_ioctl: incount %d.\n", 1227 *(int *)arg)); 1228 } 1229 ret = 0; 1230 break; 1231 case SNDCTL_SEQ_GETOUTCOUNT: 1232 if (mode == O_RDONLY) 1233 *(int *)arg = 0; 1234 else { 1235 mtx_lock(&scp->seq_lock); 1236 *(int *)arg = scp->out_q.fl; 1237 mtx_unlock(&scp->seq_lock); 1238 SEQ_DEBUG(printf("seq_ioctl: outcount %d.\n", 1239 *(int *)arg)); 1240 } 1241 ret = 0; 1242 break; 1243 #endif 1244 case SNDCTL_SEQ_CTRLRATE: 1245 if (*(int *)arg != 0) { 1246 ret = EINVAL; 1247 break; 1248 } 1249 mtx_lock(&scp->seq_lock); 1250 *(int *)arg = scp->timerbase; 1251 mtx_unlock(&scp->seq_lock); 1252 SEQ_DEBUG(3, printf("seq_ioctl: ctrlrate %d.\n", *(int *)arg)); 1253 ret = 0; 1254 break; 1255 /* 1256 * TODO: ioctl SNDCTL_SEQ_RESETSAMPLES 1257 */ 1258 #if 0 1259 case SNDCTL_SEQ_RESETSAMPLES: 1260 mtx_lock(&scp->seq_lock); 1261 ret = lookup_mididev(scp, *(int *)arg, LOOKUP_OPEN, &md); 1262 mtx_unlock(&scp->seq_lock); 1263 if (ret != 0) 1264 break; 1265 ret = midi_ioctl(MIDIMKDEV(major(i_dev), *(int *)arg, 1266 SND_DEV_MIDIN), cmd, arg, mode, td); 1267 break; 1268 #endif 1269 case SNDCTL_SEQ_NRSYNTHS: 1270 mtx_lock(&scp->seq_lock); 1271 *(int *)arg = scp->midi_number; 1272 mtx_unlock(&scp->seq_lock); 1273 SEQ_DEBUG(3, printf("seq_ioctl: synths %d.\n", *(int *)arg)); 1274 ret = 0; 1275 break; 1276 case SNDCTL_SEQ_NRMIDIS: 1277 mtx_lock(&scp->seq_lock); 1278 if (scp->music) 1279 *(int *)arg = 0; 1280 else { 1281 /* 1282 * TODO: count the numbder of devices that can WRITERAW 1283 */ 1284 *(int *)arg = scp->midi_number; 1285 } 1286 mtx_unlock(&scp->seq_lock); 1287 SEQ_DEBUG(3, printf("seq_ioctl: midis %d.\n", *(int *)arg)); 1288 ret = 0; 1289 break; 1290 /* 1291 * TODO: ioctl SNDCTL_SYNTH_MEMAVL 1292 */ 1293 #if 0 1294 case SNDCTL_SYNTH_MEMAVL: 1295 mtx_lock(&scp->seq_lock); 1296 ret = lookup_mididev(scp, *(int *)arg, LOOKUP_OPEN, &md); 1297 mtx_unlock(&scp->seq_lock); 1298 if (ret != 0) 1299 break; 1300 ret = midi_ioctl(MIDIMKDEV(major(i_dev), *(int *)arg, 1301 SND_DEV_MIDIN), cmd, arg, mode, td); 1302 break; 1303 #endif 1304 case SNDCTL_SEQ_OUTOFBAND: 1305 for (ret = 0; ret < EV_SZ; ret++) 1306 event[ret] = (u_char)arg[0]; 1307 1308 mtx_lock(&scp->seq_lock); 1309 if (scp->music) 1310 ret = seq_processevent(scp, event); 1311 else { 1312 if (seq_convertold(event, newevent) > 0) 1313 ret = seq_processevent(scp, newevent); 1314 else 1315 ret = EINVAL; 1316 } 1317 mtx_unlock(&scp->seq_lock); 1318 break; 1319 case SNDCTL_SYNTH_INFO: 1320 synthinfo = (struct synth_info *)arg; 1321 midiunit = synthinfo->device; 1322 mtx_lock(&scp->seq_lock); 1323 if (seq_fetch_mid(scp, midiunit, &md) == 0) { 1324 bzero(synthinfo, sizeof(*synthinfo)); 1325 synthinfo->name[0] = 'f'; 1326 synthinfo->name[1] = 'a'; 1327 synthinfo->name[2] = 'k'; 1328 synthinfo->name[3] = 'e'; 1329 synthinfo->name[4] = 's'; 1330 synthinfo->name[5] = 'y'; 1331 synthinfo->name[6] = 'n'; 1332 synthinfo->name[7] = 't'; 1333 synthinfo->name[8] = 'h'; 1334 synthinfo->device = midiunit; 1335 synthinfo->synth_type = SYNTH_TYPE_MIDI; 1336 synthinfo->capabilities = scp->midi_flags[midiunit]; 1337 ret = 0; 1338 } else 1339 ret = EINVAL; 1340 mtx_unlock(&scp->seq_lock); 1341 break; 1342 case SNDCTL_MIDI_INFO: 1343 midiinfo = (struct midi_info *)arg; 1344 midiunit = midiinfo->device; 1345 mtx_lock(&scp->seq_lock); 1346 if (seq_fetch_mid(scp, midiunit, &md) == 0) { 1347 bzero(midiinfo, sizeof(*midiinfo)); 1348 midiinfo->name[0] = 'f'; 1349 midiinfo->name[1] = 'a'; 1350 midiinfo->name[2] = 'k'; 1351 midiinfo->name[3] = 'e'; 1352 midiinfo->name[4] = 'm'; 1353 midiinfo->name[5] = 'i'; 1354 midiinfo->name[6] = 'd'; 1355 midiinfo->name[7] = 'i'; 1356 midiinfo->device = midiunit; 1357 midiinfo->capabilities = scp->midi_flags[midiunit]; 1358 /* 1359 * TODO: What devtype? 1360 */ 1361 midiinfo->dev_type = 0x01; 1362 ret = 0; 1363 } else 1364 ret = EINVAL; 1365 mtx_unlock(&scp->seq_lock); 1366 break; 1367 case SNDCTL_SEQ_THRESHOLD: 1368 mtx_lock(&scp->seq_lock); 1369 RANGE(*(int *)arg, 1, MIDIQ_SIZE(scp->out_q) - 1); 1370 scp->out_water = *(int *)arg; 1371 mtx_unlock(&scp->seq_lock); 1372 SEQ_DEBUG(3, printf("seq_ioctl: water %d.\n", *(int *)arg)); 1373 ret = 0; 1374 break; 1375 case SNDCTL_MIDI_PRETIME: 1376 tmp = *(int *)arg; 1377 if (tmp < 0) 1378 tmp = 0; 1379 mtx_lock(&scp->seq_lock); 1380 scp->pre_event_timeout = (hz * tmp) / 10; 1381 *(int *)arg = scp->pre_event_timeout; 1382 mtx_unlock(&scp->seq_lock); 1383 SEQ_DEBUG(3, printf("seq_ioctl: pretime %d.\n", *(int *)arg)); 1384 ret = 0; 1385 break; 1386 case SNDCTL_FM_4OP_ENABLE: 1387 case SNDCTL_PMGR_IFACE: 1388 case SNDCTL_PMGR_ACCESS: 1389 /* 1390 * Patch manager and fm are ded, ded, ded. 1391 */ 1392 /* fallthrough */ 1393 default: 1394 /* 1395 * TODO: Consider ioctl default case. 1396 * Old code used to 1397 * if ((scp->fflags & O_ACCMODE) == FREAD) { 1398 * ret = EIO; 1399 * break; 1400 * } 1401 * Then pass on the ioctl to device 0 1402 */ 1403 SEQ_DEBUG(2, 1404 printf("seq_ioctl: unsupported IOCTL %ld.\n", cmd)); 1405 ret = EINVAL; 1406 break; 1407 } 1408 1409 return ret; 1410 } 1411 1412 int 1413 seq_poll(struct cdev *i_dev, int events, struct thread *td) 1414 { 1415 int ret, lim; 1416 struct seq_softc *scp = i_dev->si_drv1; 1417 1418 SEQ_DEBUG(3, printf("seq_poll: unit %d.\n", scp->unit)); 1419 SEQ_DEBUG(1, printf("seq_poll: unit %d.\n", scp->unit)); 1420 1421 mtx_lock(&scp->seq_lock); 1422 1423 ret = 0; 1424 1425 /* Look up the apropriate queue and select it. */ 1426 if ((events & (POLLOUT | POLLWRNORM)) != 0) { 1427 /* Start playing. */ 1428 scp->playing = 1; 1429 cv_broadcast(&scp->state_cv); 1430 cv_broadcast(&scp->out_cv); 1431 1432 lim = scp->out_water; 1433 1434 if (MIDIQ_AVAIL(scp->out_q) < lim) 1435 /* No enough space, record select. */ 1436 selrecord(td, &scp->out_sel); 1437 else 1438 /* We can write now. */ 1439 ret |= events & (POLLOUT | POLLWRNORM); 1440 } 1441 if ((events & (POLLIN | POLLRDNORM)) != 0) { 1442 /* TODO: Start recording. */ 1443 1444 /* Find out the boundary. */ 1445 lim = 1; 1446 if (MIDIQ_LEN(scp->in_q) < lim) 1447 /* No data ready, record select. */ 1448 selrecord(td, &scp->in_sel); 1449 else 1450 /* We can read now. */ 1451 ret |= events & (POLLIN | POLLRDNORM); 1452 } 1453 mtx_unlock(&scp->seq_lock); 1454 1455 return (ret); 1456 } 1457 1458 #if 0 1459 static void 1460 sein_qtr(void *p, void /* mididev_info */ *md) 1461 { 1462 struct seq_softc *scp; 1463 1464 scp = (struct seq_softc *)p; 1465 1466 mtx_lock(&scp->seq_lock); 1467 1468 /* Restart playing if we have the data to output. */ 1469 if (scp->queueout_pending) 1470 seq_callback(scp, SEQ_CB_START | SEQ_CB_WR); 1471 /* Check the midi device if we are reading. */ 1472 if ((scp->flags & SEQ_F_READING) != 0) 1473 seq_midiinput(scp, md); 1474 1475 mtx_unlock(&scp->seq_lock); 1476 } 1477 1478 #endif 1479 /* 1480 * seq_convertold 1481 * Was the old playevent. Use this to convert and old 1482 * style /dev/sequencer event to a /dev/music event 1483 */ 1484 static int 1485 seq_convertold(u_char *event, u_char *out) 1486 { 1487 int used; 1488 u_char dev, chn, note, vel; 1489 1490 out[0] = out[1] = out[2] = out[3] = out[4] = out[5] = out[6] = 1491 out[7] = 0; 1492 1493 dev = 0; 1494 chn = event[1]; 1495 note = event[2]; 1496 vel = event[3]; 1497 1498 used = 0; 1499 1500 restart: 1501 /* 1502 * TODO: Debug statement 1503 */ 1504 switch (event[0]) { 1505 case EV_TIMING: 1506 case EV_CHN_VOICE: 1507 case EV_CHN_COMMON: 1508 case EV_SYSEX: 1509 case EV_SEQ_LOCAL: 1510 out[0] = event[0]; 1511 out[1] = event[1]; 1512 out[2] = event[2]; 1513 out[3] = event[3]; 1514 out[4] = event[4]; 1515 out[5] = event[5]; 1516 out[6] = event[6]; 1517 out[7] = event[7]; 1518 used += 8; 1519 break; 1520 case SEQ_NOTEOFF: 1521 out[0] = EV_CHN_VOICE; 1522 out[1] = dev; 1523 out[2] = MIDI_NOTEOFF; 1524 out[3] = chn; 1525 out[4] = note; 1526 out[5] = 255; 1527 used += 4; 1528 break; 1529 1530 case SEQ_NOTEON: 1531 out[0] = EV_CHN_VOICE; 1532 out[1] = dev; 1533 out[2] = MIDI_NOTEON; 1534 out[3] = chn; 1535 out[4] = note; 1536 out[5] = vel; 1537 used += 4; 1538 break; 1539 1540 /* 1541 * wait delay = (event[2] << 16) + (event[3] << 8) + event[4] 1542 */ 1543 1544 case SEQ_PGMCHANGE: 1545 out[0] = EV_CHN_COMMON; 1546 out[1] = dev; 1547 out[2] = MIDI_PGM_CHANGE; 1548 out[3] = chn; 1549 out[4] = note; 1550 out[5] = vel; 1551 used += 4; 1552 break; 1553 /* 1554 out[0] = EV_TIMING; 1555 out[1] = dev; 1556 out[2] = MIDI_PGM_CHANGE; 1557 out[3] = chn; 1558 out[4] = note; 1559 out[5] = vel; 1560 SEQ_DEBUG(4,printf("seq_playevent: synctimer\n")); 1561 break; 1562 */ 1563 1564 case SEQ_MIDIPUTC: 1565 SEQ_DEBUG(4, 1566 printf("seq_playevent: put data 0x%02x, unit %d.\n", 1567 event[1], event[2])); 1568 /* 1569 * Pass through to the midi device. 1570 * device = event[2] 1571 * data = event[1] 1572 */ 1573 out[0] = SEQ_MIDIPUTC; 1574 out[1] = dev; 1575 out[2] = chn; 1576 used += 4; 1577 break; 1578 #ifdef notyet 1579 case SEQ_ECHO: 1580 /* 1581 * This isn't handled here yet because I don't know if I can 1582 * just use four bytes events. There might be consequences 1583 * in the _read routing 1584 */ 1585 if (seq_copytoinput(scp, event, 4) == EAGAIN) { 1586 ret = QUEUEFULL; 1587 break; 1588 } 1589 ret = MORE; 1590 break; 1591 #endif 1592 case SEQ_EXTENDED: 1593 switch (event[1]) { 1594 case SEQ_NOTEOFF: 1595 case SEQ_NOTEON: 1596 case SEQ_PGMCHANGE: 1597 event++; 1598 used = 4; 1599 goto restart; 1600 break; 1601 case SEQ_AFTERTOUCH: 1602 /* 1603 * SYNTH_AFTERTOUCH(md, event[3], event[4]) 1604 */ 1605 case SEQ_BALANCE: 1606 /* 1607 * SYNTH_PANNING(md, event[3], (char)event[4]) 1608 */ 1609 case SEQ_CONTROLLER: 1610 /* 1611 * SYNTH_CONTROLLER(md, event[3], event[4], *(short *)&event[5]) 1612 */ 1613 case SEQ_VOLMODE: 1614 /* 1615 * SYNTH_VOLUMEMETHOD(md, event[3]) 1616 */ 1617 default: 1618 SEQ_DEBUG(2, 1619 printf("seq_convertold: SEQ_EXTENDED type %d" 1620 "not handled\n", event[1])); 1621 break; 1622 } 1623 break; 1624 case SEQ_WAIT: 1625 out[0] = EV_TIMING; 1626 out[1] = TMR_WAIT_REL; 1627 out[4] = event[2]; 1628 out[5] = event[3]; 1629 out[6] = event[4]; 1630 1631 SEQ_DEBUG(5, printf("SEQ_WAIT %d", 1632 event[2] + (event[3] << 8) + (event[4] << 24))); 1633 1634 used += 4; 1635 break; 1636 1637 case SEQ_ECHO: 1638 case SEQ_SYNCTIMER: 1639 case SEQ_PRIVATE: 1640 default: 1641 SEQ_DEBUG(2, 1642 printf("seq_convertold: event type %d not handled %d %d %d\n", 1643 event[0], event[1], event[2], event[3])); 1644 break; 1645 } 1646 return used; 1647 } 1648 1649 /* 1650 * Writting to the sequencer buffer never blocks and drops 1651 * input which cannot be queued 1652 */ 1653 void 1654 seq_copytoinput(struct seq_softc *scp, u_char *event, int len) 1655 { 1656 1657 mtx_assert(&scp->seq_lock, MA_OWNED); 1658 1659 if (MIDIQ_AVAIL(scp->in_q) < len) { 1660 /* 1661 * ENOROOM? EINPUTDROPPED? ETOUGHLUCK? 1662 */ 1663 SEQ_DEBUG(2, printf("seq_copytoinput: queue full\n")); 1664 } else { 1665 MIDIQ_ENQ(scp->in_q, event, len); 1666 selwakeup(&scp->in_sel); 1667 cv_broadcast(&scp->in_cv); 1668 } 1669 1670 } 1671 1672 static int 1673 seq_chnvoice(struct seq_softc *scp, kobj_t md, u_char *event) 1674 { 1675 int ret, voice; 1676 u_char cmd, chn, note, parm; 1677 1678 ret = 0; 1679 cmd = event[2]; 1680 chn = event[3]; 1681 note = event[4]; 1682 parm = event[5]; 1683 1684 mtx_assert(&scp->seq_lock, MA_OWNED); 1685 1686 SEQ_DEBUG(5, printf("seq_chnvoice: unit %d, dev %d, cmd %s," 1687 " chn %d, note %d, parm %d.\n", scp->unit, event[1], 1688 midi_cmdname(cmd, cmdtab_seqcv), chn, note, parm)); 1689 1690 voice = SYNTH_ALLOC(md, chn, note); 1691 1692 mtx_unlock(&scp->seq_lock); 1693 1694 switch (cmd) { 1695 case MIDI_NOTEON: 1696 if (note < 128 || note == 255) { 1697 #if 0 1698 if (scp->music && chn == 9) { 1699 /* 1700 * This channel is a percussion. The note 1701 * number is the patch number. 1702 */ 1703 /* 1704 mtx_unlock(&scp->seq_lock); 1705 if (SYNTH_SETINSTR(md, voice, 128 + note) 1706 == EAGAIN) { 1707 mtx_lock(&scp->seq_lock); 1708 return (QUEUEFULL); 1709 } 1710 mtx_lock(&scp->seq_lock); 1711 */ 1712 note = 60; /* Middle C. */ 1713 } 1714 #endif 1715 if (scp->music) { 1716 /* 1717 mtx_unlock(&scp->seq_lock); 1718 if (SYNTH_SETUPVOICE(md, voice, chn) 1719 == EAGAIN) { 1720 mtx_lock(&scp->seq_lock); 1721 return (QUEUEFULL); 1722 } 1723 mtx_lock(&scp->seq_lock); 1724 */ 1725 } 1726 SYNTH_STARTNOTE(md, voice, note, parm); 1727 } 1728 break; 1729 case MIDI_NOTEOFF: 1730 SYNTH_KILLNOTE(md, voice, note, parm); 1731 break; 1732 case MIDI_KEY_PRESSURE: 1733 SYNTH_AFTERTOUCH(md, voice, parm); 1734 break; 1735 default: 1736 ret = 1; 1737 SEQ_DEBUG(2, printf("seq_chnvoice event type %d not handled\n", 1738 event[1])); 1739 break; 1740 } 1741 1742 mtx_lock(&scp->seq_lock); 1743 return ret; 1744 } 1745 1746 static int 1747 seq_chncommon(struct seq_softc *scp, kobj_t md, u_char *event) 1748 { 1749 int ret; 1750 u_short w14; 1751 u_char cmd, chn, p1; 1752 1753 ret = 0; 1754 cmd = event[2]; 1755 chn = event[3]; 1756 p1 = event[4]; 1757 w14 = *(u_short *)&event[6]; 1758 1759 SEQ_DEBUG(5, printf("seq_chncommon: unit %d, dev %d, cmd %s, chn %d," 1760 " p1 %d, w14 %d.\n", scp->unit, event[1], 1761 midi_cmdname(cmd, cmdtab_seqccmn), chn, p1, w14)); 1762 mtx_unlock(&scp->seq_lock); 1763 switch (cmd) { 1764 case MIDI_PGM_CHANGE: 1765 SEQ_DEBUG(4, printf("seq_chncommon pgmchn chn %d pg %d\n", 1766 chn, p1)); 1767 SYNTH_SETINSTR(md, chn, p1); 1768 break; 1769 case MIDI_CTL_CHANGE: 1770 SEQ_DEBUG(4, printf("seq_chncommon ctlch chn %d pg %d %d\n", 1771 chn, p1, w14)); 1772 SYNTH_CONTROLLER(md, chn, p1, w14); 1773 break; 1774 case MIDI_PITCH_BEND: 1775 if (scp->music) { 1776 /* 1777 * TODO: MIDI_PITCH_BEND 1778 */ 1779 #if 0 1780 mtx_lock(&md->synth.vc_mtx); 1781 md->synth.chn_info[chn].bender_value = w14; 1782 if (md->midiunit >= 0) { 1783 /* 1784 * Handle all of the notes playing on this 1785 * channel. 1786 */ 1787 key = ((int)chn << 8); 1788 for (i = 0; i < md->synth.alloc.max_voice; i++) 1789 if ((md->synth.alloc.map[i] & 0xff00) == key) { 1790 mtx_unlock(&md->synth.vc_mtx); 1791 mtx_unlock(&scp->seq_lock); 1792 if (md->synth.bender(md, i, w14) == EAGAIN) { 1793 mtx_lock(&scp->seq_lock); 1794 return (QUEUEFULL); 1795 } 1796 mtx_lock(&scp->seq_lock); 1797 } 1798 } else { 1799 mtx_unlock(&md->synth.vc_mtx); 1800 mtx_unlock(&scp->seq_lock); 1801 if (md->synth.bender(md, chn, w14) == EAGAIN) { 1802 mtx_lock(&scp->seq_lock); 1803 return (QUEUEFULL); 1804 } 1805 mtx_lock(&scp->seq_lock); 1806 } 1807 #endif 1808 } else 1809 SYNTH_BENDER(md, chn, w14); 1810 break; 1811 default: 1812 ret = 1; 1813 SEQ_DEBUG(2, 1814 printf("seq_chncommon event type %d not handled.\n", 1815 event[1])); 1816 break; 1817 1818 } 1819 mtx_lock(&scp->seq_lock); 1820 return ret; 1821 } 1822 1823 static int 1824 seq_timing(struct seq_softc *scp, u_char *event) 1825 { 1826 int param; 1827 int ret; 1828 1829 ret = 0; 1830 param = event[4] + (event[5] << 8) + 1831 (event[6] << 16) + (event[7] << 24); 1832 1833 SEQ_DEBUG(5, printf("seq_timing: unit %d, cmd %d, param %d.\n", 1834 scp->unit, event[1], param)); 1835 switch (event[1]) { 1836 case TMR_WAIT_REL: 1837 timer_wait(scp, param, 0); 1838 break; 1839 case TMR_WAIT_ABS: 1840 timer_wait(scp, param, 1); 1841 break; 1842 case TMR_START: 1843 timer_start(scp); 1844 cv_broadcast(&scp->reset_cv); 1845 break; 1846 case TMR_STOP: 1847 timer_stop(scp); 1848 /* 1849 * The following cv_broadcast isn't needed since we only 1850 * wait for 0->1 transitions. It probably won't hurt 1851 */ 1852 cv_broadcast(&scp->reset_cv); 1853 break; 1854 case TMR_CONTINUE: 1855 timer_continue(scp); 1856 cv_broadcast(&scp->reset_cv); 1857 break; 1858 case TMR_TEMPO: 1859 if (param < 8) 1860 param = 8; 1861 if (param > 360) 1862 param = 360; 1863 SEQ_DEBUG(4, printf("Timer set tempo %d\n", param)); 1864 timer_setvals(scp, param, scp->timerbase); 1865 break; 1866 case TMR_TIMERBASE: 1867 if (param < 1) 1868 param = 1; 1869 if (param > 1000) 1870 param = 1000; 1871 SEQ_DEBUG(4, printf("Timer set timerbase %d\n", param)); 1872 timer_setvals(scp, scp->tempo, param); 1873 break; 1874 case TMR_ECHO: 1875 /* 1876 * TODO: Consider making 4-byte events for /dev/sequencer 1877 * PRO: Maybe needed by legacy apps 1878 * CON: soundcard.h has been warning for a while many years 1879 * to expect 8 byte events. 1880 */ 1881 #if 0 1882 if (scp->music) 1883 seq_copytoinput(scp, event, 8); 1884 else { 1885 param = (param << 8 | SEQ_ECHO); 1886 seq_copytoinput(scp, (u_char *)¶m, 4); 1887 } 1888 #else 1889 seq_copytoinput(scp, event, 8); 1890 #endif 1891 break; 1892 default: 1893 SEQ_DEBUG(2, printf("seq_timing event type %d not handled.\n", 1894 event[1])); 1895 ret = 1; 1896 break; 1897 } 1898 return ret; 1899 } 1900 1901 static int 1902 seq_local(struct seq_softc *scp, u_char *event) 1903 { 1904 int ret; 1905 1906 ret = 0; 1907 mtx_assert(&scp->seq_lock, MA_OWNED); 1908 1909 SEQ_DEBUG(5, printf("seq_local: unit %d, cmd %d\n", scp->unit, 1910 event[1])); 1911 switch (event[1]) { 1912 default: 1913 SEQ_DEBUG(1, printf("seq_local event type %d not handled\n", 1914 event[1])); 1915 ret = 1; 1916 break; 1917 } 1918 return ret; 1919 } 1920 1921 static int 1922 seq_sysex(struct seq_softc *scp, kobj_t md, u_char *event) 1923 { 1924 int i, l; 1925 1926 mtx_assert(&scp->seq_lock, MA_OWNED); 1927 SEQ_DEBUG(5, printf("seq_sysex: unit %d device %d\n", scp->unit, 1928 event[1])); 1929 l = 0; 1930 for (i = 0; i < 6 && event[i + 2] != 0xff; i++) 1931 l = i + 1; 1932 if (l > 0) { 1933 mtx_unlock(&scp->seq_lock); 1934 if (SYNTH_SENDSYSEX(md, &event[2], l) == EAGAIN) { 1935 mtx_lock(&scp->seq_lock); 1936 return 1; 1937 } 1938 mtx_lock(&scp->seq_lock); 1939 } 1940 return 0; 1941 } 1942 1943 /* 1944 * Reset no longer closes the raw devices nor seq_sync's 1945 * Callers are IOCTL and seq_close 1946 */ 1947 static void 1948 seq_reset(struct seq_softc *scp) 1949 { 1950 int chn, i; 1951 kobj_t m; 1952 1953 mtx_assert(&scp->seq_lock, MA_OWNED); 1954 1955 SEQ_DEBUG(5, printf("seq_reset: unit %d.\n", scp->unit)); 1956 1957 /* 1958 * Stop reading and writing. 1959 */ 1960 1961 /* scp->recording = 0; */ 1962 scp->playing = 0; 1963 cv_broadcast(&scp->state_cv); 1964 cv_broadcast(&scp->out_cv); 1965 cv_broadcast(&scp->reset_cv); 1966 1967 /* 1968 * For now, don't reset the timers. 1969 */ 1970 MIDIQ_CLEAR(scp->in_q); 1971 MIDIQ_CLEAR(scp->out_q); 1972 1973 for (i = 0; i < scp->midi_number; i++) { 1974 m = scp->midis[i]; 1975 mtx_unlock(&scp->seq_lock); 1976 SYNTH_RESET(m); 1977 for (chn = 0; chn < 16; chn++) { 1978 SYNTH_CONTROLLER(m, chn, 123, 0); 1979 SYNTH_CONTROLLER(m, chn, 121, 0); 1980 SYNTH_BENDER(m, chn, 1 << 13); 1981 } 1982 mtx_lock(&scp->seq_lock); 1983 } 1984 } 1985 1986 /* 1987 * seq_sync 1988 * *really* flush the output queue 1989 * flush the event queue, then flush the synthsisers. 1990 * Callers are IOCTL and close 1991 */ 1992 1993 #define SEQ_SYNC_TIMEOUT 8 1994 static int 1995 seq_sync(struct seq_softc *scp) 1996 { 1997 int i, rl, sync[16], done; 1998 1999 mtx_assert(&scp->seq_lock, MA_OWNED); 2000 2001 SEQ_DEBUG(4, printf("seq_sync: unit %d.\n", scp->unit)); 2002 2003 /* 2004 * Wait until output queue is empty. Check every so often to see if 2005 * the queue is moving along. If it isn't just abort. 2006 */ 2007 while (!MIDIQ_EMPTY(scp->out_q)) { 2008 2009 if (!scp->playing) { 2010 scp->playing = 1; 2011 cv_broadcast(&scp->state_cv); 2012 cv_broadcast(&scp->out_cv); 2013 } 2014 rl = MIDIQ_LEN(scp->out_q); 2015 2016 i = cv_timedwait_sig(&scp->out_cv, 2017 &scp->seq_lock, SEQ_SYNC_TIMEOUT * hz); 2018 2019 if (i == EINTR || i == ERESTART) { 2020 if (i == EINTR) { 2021 /* 2022 * XXX: I don't know why we stop playing 2023 */ 2024 scp->playing = 0; 2025 cv_broadcast(&scp->out_cv); 2026 } 2027 return i; 2028 } 2029 if (i == EWOULDBLOCK && rl == MIDIQ_LEN(scp->out_q) && 2030 scp->waiting == 0) { 2031 /* 2032 * A queue seems to be stuck up. Give up and clear 2033 * queues. 2034 */ 2035 MIDIQ_CLEAR(scp->out_q); 2036 scp->playing = 0; 2037 cv_broadcast(&scp->state_cv); 2038 cv_broadcast(&scp->out_cv); 2039 cv_broadcast(&scp->reset_cv); 2040 2041 /* 2042 * TODO: Consider if the raw devices need to be flushed 2043 */ 2044 2045 SEQ_DEBUG(1, printf("seq_sync queue stuck, aborting\n")); 2046 2047 return i; 2048 } 2049 } 2050 2051 scp->playing = 0; 2052 /* 2053 * Since syncing a midi device might block, unlock scp->seq_lock. 2054 */ 2055 2056 mtx_unlock(&scp->seq_lock); 2057 for (i = 0; i < scp->midi_number; i++) 2058 sync[i] = 1; 2059 2060 do { 2061 done = 1; 2062 for (i = 0; i < scp->midi_number; i++) 2063 if (sync[i]) { 2064 if (SYNTH_INSYNC(scp->midis[i]) == 0) 2065 sync[i] = 0; 2066 else 2067 done = 0; 2068 } 2069 if (!done) 2070 DELAY(5000); 2071 2072 } while (!done); 2073 2074 mtx_lock(&scp->seq_lock); 2075 return 0; 2076 } 2077 2078 char * 2079 midi_cmdname(int cmd, midi_cmdtab *tab) 2080 { 2081 while (tab->name != NULL) { 2082 if (cmd == tab->cmd) 2083 return (tab->name); 2084 tab++; 2085 } 2086 2087 return ("unknown"); 2088 }
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