sequencer.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2003 Mathew Kanner 5 * Copyright (c) 1993 Hannu Savolainen 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30/* 31 * The sequencer personality manager. 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD: stable/11/sys/dev/sound/midi/sequencer.c 330897 2018-03-14 03:19:51Z eadler $"); 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/ioccom.h> 40 41#include <sys/filio.h> 42#include <sys/lock.h> 43#include <sys/sockio.h> 44#include <sys/fcntl.h> 45#include <sys/proc.h> 46#include <sys/sysctl.h> 47 48#include <sys/kernel.h> /* for DATA_SET */ 49 50#include <sys/module.h> 51#include <sys/conf.h> 52#include <sys/file.h> 53#include <sys/uio.h> 54#include <sys/syslog.h> 55#include <sys/errno.h> 56#include <sys/malloc.h> 57#include <sys/bus.h> 58#include <machine/resource.h> 59#include <machine/bus.h> 60#include <machine/clock.h> /* for DELAY */ 61#include <sys/soundcard.h> 62#include <sys/rman.h> 63#include <sys/mman.h> 64#include <sys/poll.h> 65#include <sys/mutex.h> 66#include <sys/condvar.h> 67#include <sys/kthread.h> 68#include <sys/unistd.h> 69#include <sys/selinfo.h> 70 71#ifdef HAVE_KERNEL_OPTION_HEADERS 72#include "opt_snd.h" 73#endif 74 75#include <dev/sound/midi/midi.h> 76#include <dev/sound/midi/midiq.h> 77#include "synth_if.h" 78 79#include <dev/sound/midi/sequencer.h> 80 81#define TMR_TIMERBASE 13 82 83#define SND_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM 84 * synthesizer and MIDI output) */ 85#define SND_DEV_MUSIC 8 /* /dev/music, level 2 interface */ 86 87/* Length of a sequencer event. */ 88#define EV_SZ 8 89#define IEV_SZ 8 90 91/* Lookup modes */ 92#define LOOKUP_EXIST (0) 93#define LOOKUP_OPEN (1) 94#define LOOKUP_CLOSE (2) 95 96#define PCMMKMINOR(u, d, c) \ 97 ((((c) & 0xff) << 16) | (((u) & 0x0f) << 4) | ((d) & 0x0f)) 98#define MIDIMKMINOR(u, d, c) PCMMKMINOR(u, d, c) 99#define MIDIUNIT(y) ((dev2unit(y) >> 4) & 0x0f) 100#define MIDIDEV(y) (dev2unit(y) & 0x0f) 101 102/* These are the entries to the sequencer driver. */ 103static d_open_t mseq_open; 104static d_close_t mseq_close; 105static d_ioctl_t mseq_ioctl; 106static d_read_t mseq_read; 107static d_write_t mseq_write; 108static d_poll_t mseq_poll; 109 110static struct cdevsw seq_cdevsw = { 111 .d_version = D_VERSION, 112 .d_open = mseq_open, 113 .d_close = mseq_close, 114 .d_read = mseq_read, 115 .d_write = mseq_write, 116 .d_ioctl = mseq_ioctl, 117 .d_poll = mseq_poll, 118 .d_name = "sequencer", 119}; 120 121struct seq_softc { 122 KOBJ_FIELDS; 123 124 struct mtx seq_lock, q_lock; 125 struct cv empty_cv, reset_cv, in_cv, out_cv, state_cv, th_cv; 126 127 MIDIQ_HEAD(, u_char) in_q, out_q; 128 129 u_long flags; 130 /* Flags (protected by flag_mtx of mididev_info) */ 131 int fflags; /* Access mode */ 132 int music; 133 134 int out_water; /* Sequence output threshould */ 135 snd_sync_parm sync_parm; /* AIOSYNC parameter set */ 136 struct thread *sync_thread; /* AIOSYNCing thread */ 137 struct selinfo in_sel, out_sel; 138 int midi_number; 139 struct cdev *seqdev, *musicdev; 140 int unit; 141 int maxunits; 142 kobj_t *midis; 143 int *midi_flags; 144 kobj_t mapper; 145 void *mapper_cookie; 146 struct timeval timerstop, timersub; 147 int timerbase, tempo; 148 int timerrun; 149 int done; 150 int playing; 151 int recording; 152 int busy; 153 int pre_event_timeout; 154 int waiting; 155}; 156 157/* 158 * Module specific stuff, including how many sequecers 159 * we currently own. 160 */ 161 162SYSCTL_NODE(_hw_midi, OID_AUTO, seq, CTLFLAG_RD, 0, "Midi sequencer"); 163 164int seq_debug; 165/* XXX: should this be moved into debug.midi? */ 166SYSCTL_INT(_hw_midi_seq, OID_AUTO, debug, CTLFLAG_RW, &seq_debug, 0, ""); 167 168midi_cmdtab cmdtab_seqevent[] = { 169 {SEQ_NOTEOFF, "SEQ_NOTEOFF"}, 170 {SEQ_NOTEON, "SEQ_NOTEON"}, 171 {SEQ_WAIT, "SEQ_WAIT"}, 172 {SEQ_PGMCHANGE, "SEQ_PGMCHANGE"}, 173 {SEQ_SYNCTIMER, "SEQ_SYNCTIMER"}, 174 {SEQ_MIDIPUTC, "SEQ_MIDIPUTC"}, 175 {SEQ_DRUMON, "SEQ_DRUMON"}, 176 {SEQ_DRUMOFF, "SEQ_DRUMOFF"}, 177 {SEQ_ECHO, "SEQ_ECHO"}, 178 {SEQ_AFTERTOUCH, "SEQ_AFTERTOUCH"}, 179 {SEQ_CONTROLLER, "SEQ_CONTROLLER"}, 180 {SEQ_BALANCE, "SEQ_BALANCE"}, 181 {SEQ_VOLMODE, "SEQ_VOLMODE"}, 182 {SEQ_FULLSIZE, "SEQ_FULLSIZE"}, 183 {SEQ_PRIVATE, "SEQ_PRIVATE"}, 184 {SEQ_EXTENDED, "SEQ_EXTENDED"}, 185 {EV_SEQ_LOCAL, "EV_SEQ_LOCAL"}, 186 {EV_TIMING, "EV_TIMING"}, 187 {EV_CHN_COMMON, "EV_CHN_COMMON"}, 188 {EV_CHN_VOICE, "EV_CHN_VOICE"}, 189 {EV_SYSEX, "EV_SYSEX"}, 190 {-1, NULL}, 191}; 192 193midi_cmdtab cmdtab_seqioctl[] = { 194 {SNDCTL_SEQ_RESET, "SNDCTL_SEQ_RESET"}, 195 {SNDCTL_SEQ_SYNC, "SNDCTL_SEQ_SYNC"}, 196 {SNDCTL_SYNTH_INFO, "SNDCTL_SYNTH_INFO"}, 197 {SNDCTL_SEQ_CTRLRATE, "SNDCTL_SEQ_CTRLRATE"}, 198 {SNDCTL_SEQ_GETOUTCOUNT, "SNDCTL_SEQ_GETOUTCOUNT"}, 199 {SNDCTL_SEQ_GETINCOUNT, "SNDCTL_SEQ_GETINCOUNT"}, 200 {SNDCTL_SEQ_PERCMODE, "SNDCTL_SEQ_PERCMODE"}, 201 {SNDCTL_FM_LOAD_INSTR, "SNDCTL_FM_LOAD_INSTR"}, 202 {SNDCTL_SEQ_TESTMIDI, "SNDCTL_SEQ_TESTMIDI"}, 203 {SNDCTL_SEQ_RESETSAMPLES, "SNDCTL_SEQ_RESETSAMPLES"}, 204 {SNDCTL_SEQ_NRSYNTHS, "SNDCTL_SEQ_NRSYNTHS"}, 205 {SNDCTL_SEQ_NRMIDIS, "SNDCTL_SEQ_NRMIDIS"}, 206 {SNDCTL_SEQ_GETTIME, "SNDCTL_SEQ_GETTIME"}, 207 {SNDCTL_MIDI_INFO, "SNDCTL_MIDI_INFO"}, 208 {SNDCTL_SEQ_THRESHOLD, "SNDCTL_SEQ_THRESHOLD"}, 209 {SNDCTL_SYNTH_MEMAVL, "SNDCTL_SYNTH_MEMAVL"}, 210 {SNDCTL_FM_4OP_ENABLE, "SNDCTL_FM_4OP_ENABLE"}, 211 {SNDCTL_PMGR_ACCESS, "SNDCTL_PMGR_ACCESS"}, 212 {SNDCTL_SEQ_PANIC, "SNDCTL_SEQ_PANIC"}, 213 {SNDCTL_SEQ_OUTOFBAND, "SNDCTL_SEQ_OUTOFBAND"}, 214 {SNDCTL_TMR_TIMEBASE, "SNDCTL_TMR_TIMEBASE"}, 215 {SNDCTL_TMR_START, "SNDCTL_TMR_START"}, 216 {SNDCTL_TMR_STOP, "SNDCTL_TMR_STOP"}, 217 {SNDCTL_TMR_CONTINUE, "SNDCTL_TMR_CONTINUE"}, 218 {SNDCTL_TMR_TEMPO, "SNDCTL_TMR_TEMPO"}, 219 {SNDCTL_TMR_SOURCE, "SNDCTL_TMR_SOURCE"}, 220 {SNDCTL_TMR_METRONOME, "SNDCTL_TMR_METRONOME"}, 221 {SNDCTL_TMR_SELECT, "SNDCTL_TMR_SELECT"}, 222 {SNDCTL_MIDI_PRETIME, "SNDCTL_MIDI_PRETIME"}, 223 {AIONWRITE, "AIONWRITE"}, 224 {AIOGSIZE, "AIOGSIZE"}, 225 {AIOSSIZE, "AIOSSIZE"}, 226 {AIOGFMT, "AIOGFMT"}, 227 {AIOSFMT, "AIOSFMT"}, 228 {AIOGMIX, "AIOGMIX"}, 229 {AIOSMIX, "AIOSMIX"}, 230 {AIOSTOP, "AIOSTOP"}, 231 {AIOSYNC, "AIOSYNC"}, 232 {AIOGCAP, "AIOGCAP"}, 233 {-1, NULL}, 234}; 235 236midi_cmdtab cmdtab_timer[] = { 237 {TMR_WAIT_REL, "TMR_WAIT_REL"}, 238 {TMR_WAIT_ABS, "TMR_WAIT_ABS"}, 239 {TMR_STOP, "TMR_STOP"}, 240 {TMR_START, "TMR_START"}, 241 {TMR_CONTINUE, "TMR_CONTINUE"}, 242 {TMR_TEMPO, "TMR_TEMPO"}, 243 {TMR_ECHO, "TMR_ECHO"}, 244 {TMR_CLOCK, "TMR_CLOCK"}, 245 {TMR_SPP, "TMR_SPP"}, 246 {TMR_TIMESIG, "TMR_TIMESIG"}, 247 {-1, NULL}, 248}; 249 250midi_cmdtab cmdtab_seqcv[] = { 251 {MIDI_NOTEOFF, "MIDI_NOTEOFF"}, 252 {MIDI_NOTEON, "MIDI_NOTEON"}, 253 {MIDI_KEY_PRESSURE, "MIDI_KEY_PRESSURE"}, 254 {-1, NULL}, 255}; 256 257midi_cmdtab cmdtab_seqccmn[] = { 258 {MIDI_CTL_CHANGE, "MIDI_CTL_CHANGE"}, 259 {MIDI_PGM_CHANGE, "MIDI_PGM_CHANGE"}, 260 {MIDI_CHN_PRESSURE, "MIDI_CHN_PRESSURE"}, 261 {MIDI_PITCH_BEND, "MIDI_PITCH_BEND"}, 262 {MIDI_SYSTEM_PREFIX, "MIDI_SYSTEM_PREFIX"}, 263 {-1, NULL}, 264}; 265 266#ifndef KOBJMETHOD_END 267#define KOBJMETHOD_END { NULL, NULL } 268#endif 269 270/* 271 * static const char *mpu401_mprovider(kobj_t obj, struct mpu401 *m); 272 */ 273 274static kobj_method_t seq_methods[] = { 275 /* KOBJMETHOD(mpu_provider,mpu401_mprovider), */ 276 KOBJMETHOD_END 277}; 278 279DEFINE_CLASS(sequencer, seq_methods, 0); 280 281/* The followings are the local function. */ 282static int seq_convertold(u_char *event, u_char *out); 283 284/* 285 * static void seq_midiinput(struct seq_softc * scp, void *md); 286 */ 287static void seq_reset(struct seq_softc *scp); 288static int seq_sync(struct seq_softc *scp); 289 290static int seq_processevent(struct seq_softc *scp, u_char *event); 291 292static int seq_timing(struct seq_softc *scp, u_char *event); 293static int seq_local(struct seq_softc *scp, u_char *event); 294 295static int seq_chnvoice(struct seq_softc *scp, kobj_t md, u_char *event); 296static int seq_chncommon(struct seq_softc *scp, kobj_t md, u_char *event); 297static int seq_sysex(struct seq_softc *scp, kobj_t md, u_char *event); 298 299static int seq_fetch_mid(struct seq_softc *scp, int unit, kobj_t *md); 300void seq_copytoinput(struct seq_softc *scp, u_char *event, int len); 301int seq_modevent(module_t mod, int type, void *data); 302struct seq_softc *seqs[10]; 303static struct mtx seqinfo_mtx; 304static u_long nseq = 0; 305 306static void timer_start(struct seq_softc *t); 307static void timer_stop(struct seq_softc *t); 308static void timer_setvals(struct seq_softc *t, int tempo, int timerbase); 309static void timer_wait(struct seq_softc *t, int ticks, int wait_abs); 310static int timer_now(struct seq_softc *t); 311 312 313static void 314timer_start(struct seq_softc *t) 315{ 316 t->timerrun = 1; 317 getmicrotime(&t->timersub); 318} 319 320static void 321timer_continue(struct seq_softc *t) 322{ 323 struct timeval now; 324 325 if (t->timerrun == 1) 326 return; 327 t->timerrun = 1; 328 getmicrotime(&now); 329 timevalsub(&now, &t->timerstop); 330 timevaladd(&t->timersub, &now); 331} 332 333static void 334timer_stop(struct seq_softc *t) 335{ 336 t->timerrun = 0; 337 getmicrotime(&t->timerstop); 338} 339 340static void 341timer_setvals(struct seq_softc *t, int tempo, int timerbase) 342{ 343 t->tempo = tempo; 344 t->timerbase = timerbase; 345} 346 347static void 348timer_wait(struct seq_softc *t, int ticks, int wait_abs) 349{ 350 struct timeval now, when; 351 int ret; 352 unsigned long long i; 353 354 while (t->timerrun == 0) { 355 SEQ_DEBUG(2, printf("Timer wait when timer isn't running\n")); 356 /* 357 * The old sequencer used timeouts that only increased 358 * the timer when the timer was running. 359 * Hence the sequencer would stick (?) if the 360 * timer was disabled. 361 */ 362 cv_wait(&t->reset_cv, &t->seq_lock); 363 if (t->playing == 0) 364 return; 365 } 366 367 i = ticks * 60ull * 1000000ull / (t->tempo * t->timerbase); 368 369 when.tv_sec = i / 1000000; 370 when.tv_usec = i % 1000000; 371 372#if 0 373 printf("timer_wait tempo %d timerbase %d ticks %d abs %d u_sec %llu\n", 374 t->tempo, t->timerbase, ticks, wait_abs, i); 375#endif 376 377 if (wait_abs != 0) { 378 getmicrotime(&now); 379 timevalsub(&now, &t->timersub); 380 timevalsub(&when, &now); 381 } 382 if (when.tv_sec < 0 || when.tv_usec < 0) { 383 SEQ_DEBUG(3, 384 printf("seq_timer error negative time %lds.%06lds\n", 385 (long)when.tv_sec, (long)when.tv_usec)); 386 return; 387 } 388 i = when.tv_sec * 1000000ull; 389 i += when.tv_usec; 390 i *= hz; 391 i /= 1000000ull; 392#if 0 393 printf("seq_timer usec %llu ticks %llu\n", 394 when.tv_sec * 1000000ull + when.tv_usec, i); 395#endif 396 t->waiting = 1; 397 ret = cv_timedwait(&t->reset_cv, &t->seq_lock, i + 1); 398 t->waiting = 0; 399 400 if (ret != EWOULDBLOCK) 401 SEQ_DEBUG(3, printf("seq_timer didn't timeout\n")); 402 403} 404 405static int 406timer_now(struct seq_softc *t) 407{ 408 struct timeval now; 409 unsigned long long i; 410 int ret; 411 412 if (t->timerrun == 0) 413 now = t->timerstop; 414 else 415 getmicrotime(&now); 416 417 timevalsub(&now, &t->timersub); 418 419 i = now.tv_sec * 1000000ull; 420 i += now.tv_usec; 421 i *= t->timerbase; 422/* i /= t->tempo; */ 423 i /= 1000000ull; 424 425 ret = i; 426 /* 427 * printf("timer_now: %llu %d\n", i, ret); 428 */ 429 430 return ret; 431} 432 433static void 434seq_eventthread(void *arg) 435{ 436 struct seq_softc *scp = arg; 437 char event[EV_SZ]; 438 439 mtx_lock(&scp->seq_lock); 440 SEQ_DEBUG(2, printf("seq_eventthread started\n")); 441 while (scp->done == 0) { 442restart: 443 while (scp->playing == 0) { 444 cv_wait(&scp->state_cv, &scp->seq_lock); 445 if (scp->done) 446 goto done; 447 } 448 449 while (MIDIQ_EMPTY(scp->out_q)) { 450 cv_broadcast(&scp->empty_cv); 451 cv_wait(&scp->out_cv, &scp->seq_lock); 452 if (scp->playing == 0) 453 goto restart; 454 if (scp->done) 455 goto done; 456 } 457 458 MIDIQ_DEQ(scp->out_q, event, EV_SZ); 459 460 if (MIDIQ_AVAIL(scp->out_q) < scp->out_water) { 461 cv_broadcast(&scp->out_cv); 462 selwakeup(&scp->out_sel); 463 } 464 seq_processevent(scp, event); 465 } 466 467done: 468 cv_broadcast(&scp->th_cv); 469 mtx_unlock(&scp->seq_lock); 470 SEQ_DEBUG(2, printf("seq_eventthread finished\n")); 471 kproc_exit(0); 472} 473 474/* 475 * seq_processevent: This maybe called by the event thread or the IOCTL 476 * handler for queued and out of band events respectively. 477 */ 478static int 479seq_processevent(struct seq_softc *scp, u_char *event) 480{ 481 int ret; 482 kobj_t m; 483 484 ret = 0; 485 486 if (event[0] == EV_SEQ_LOCAL) 487 ret = seq_local(scp, event); 488 else if (event[0] == EV_TIMING) 489 ret = seq_timing(scp, event); 490 else if (event[0] != EV_CHN_VOICE && 491 event[0] != EV_CHN_COMMON && 492 event[0] != EV_SYSEX && 493 event[0] != SEQ_MIDIPUTC) { 494 ret = 1; 495 SEQ_DEBUG(2, printf("seq_processevent not known %d\n", 496 event[0])); 497 } else if (seq_fetch_mid(scp, event[1], &m) != 0) { 498 ret = 1; 499 SEQ_DEBUG(2, printf("seq_processevent midi unit not found %d\n", 500 event[1])); 501 } else 502 switch (event[0]) { 503 case EV_CHN_VOICE: 504 ret = seq_chnvoice(scp, m, event); 505 break; 506 case EV_CHN_COMMON: 507 ret = seq_chncommon(scp, m, event); 508 break; 509 case EV_SYSEX: 510 ret = seq_sysex(scp, m, event); 511 break; 512 case SEQ_MIDIPUTC: 513 mtx_unlock(&scp->seq_lock); 514 ret = SYNTH_WRITERAW(m, &event[2], 1); 515 mtx_lock(&scp->seq_lock); 516 break; 517 } 518 return ret; 519} 520 521static int 522seq_addunit(void) 523{ 524 struct seq_softc *scp; 525 int ret; 526 u_char *buf; 527 528 /* Allocate the softc. */ 529 ret = ENOMEM; 530 scp = malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT | M_ZERO); 531 if (scp == NULL) { 532 SEQ_DEBUG(1, printf("seq_addunit: softc allocation failed.\n")); 533 goto err; 534 } 535 kobj_init((kobj_t)scp, &sequencer_class); 536 537 buf = malloc(sizeof(*buf) * EV_SZ * 1024, M_TEMP, M_NOWAIT | M_ZERO); 538 if (buf == NULL) 539 goto err; 540 MIDIQ_INIT(scp->in_q, buf, EV_SZ * 1024); 541 buf = malloc(sizeof(*buf) * EV_SZ * 1024, M_TEMP, M_NOWAIT | M_ZERO); 542 if (buf == NULL) 543 goto err; 544 MIDIQ_INIT(scp->out_q, buf, EV_SZ * 1024); 545 ret = EINVAL; 546 547 scp->midis = malloc(sizeof(kobj_t) * 32, M_TEMP, M_NOWAIT | M_ZERO); 548 scp->midi_flags = malloc(sizeof(*scp->midi_flags) * 32, M_TEMP, 549 M_NOWAIT | M_ZERO); 550 551 if (scp->midis == NULL || scp->midi_flags == NULL) 552 goto err; 553 554 scp->flags = 0; 555 556 mtx_init(&scp->seq_lock, "seqflq", NULL, 0); 557 cv_init(&scp->state_cv, "seqstate"); 558 cv_init(&scp->empty_cv, "seqempty"); 559 cv_init(&scp->reset_cv, "seqtimer"); 560 cv_init(&scp->out_cv, "seqqout"); 561 cv_init(&scp->in_cv, "seqqin"); 562 cv_init(&scp->th_cv, "seqstart"); 563 564 /* 565 * Init the damn timer 566 */ 567 568 scp->mapper = midimapper_addseq(scp, &scp->unit, &scp->mapper_cookie); 569 if (scp->mapper == NULL) 570 goto err; 571 572 scp->seqdev = make_dev(&seq_cdevsw, 573 MIDIMKMINOR(scp->unit, SND_DEV_SEQ, 0), UID_ROOT, 574 GID_WHEEL, 0666, "sequencer%d", scp->unit); 575 576 scp->musicdev = make_dev(&seq_cdevsw, 577 MIDIMKMINOR(scp->unit, SND_DEV_MUSIC, 0), UID_ROOT, 578 GID_WHEEL, 0666, "music%d", scp->unit); 579 580 if (scp->seqdev == NULL || scp->musicdev == NULL) 581 goto err; 582 /* 583 * TODO: Add to list of sequencers this module provides 584 */ 585 586 ret = 587 kproc_create 588 (seq_eventthread, scp, NULL, RFHIGHPID, 0, 589 "sequencer %02d", scp->unit); 590 591 if (ret) 592 goto err; 593 594 scp->seqdev->si_drv1 = scp->musicdev->si_drv1 = scp; 595 596 SEQ_DEBUG(2, printf("sequencer %d created scp %p\n", scp->unit, scp)); 597 598 ret = 0; 599 600 mtx_lock(&seqinfo_mtx); 601 seqs[nseq++] = scp; 602 mtx_unlock(&seqinfo_mtx); 603 604 goto ok; 605 606err: 607 if (scp != NULL) { 608 if (scp->seqdev != NULL) 609 destroy_dev(scp->seqdev); 610 if (scp->musicdev != NULL) 611 destroy_dev(scp->musicdev); 612 /* 613 * TODO: Destroy mutex and cv 614 */ 615 if (scp->midis != NULL) 616 free(scp->midis, M_TEMP); 617 if (scp->midi_flags != NULL) 618 free(scp->midi_flags, M_TEMP); 619 if (scp->out_q.b) 620 free(scp->out_q.b, M_TEMP); 621 if (scp->in_q.b) 622 free(scp->in_q.b, M_TEMP); 623 free(scp, M_DEVBUF); 624 } 625ok: 626 return ret; 627} 628 629static int 630seq_delunit(int unit) 631{ 632 struct seq_softc *scp = seqs[unit]; 633 int i; 634 635 //SEQ_DEBUG(4, printf("seq_delunit: %d\n", unit)); 636 SEQ_DEBUG(1, printf("seq_delunit: 1 \n")); 637 mtx_lock(&scp->seq_lock); 638 639 scp->playing = 0; 640 scp->done = 1; 641 cv_broadcast(&scp->out_cv); 642 cv_broadcast(&scp->state_cv); 643 cv_broadcast(&scp->reset_cv); 644 SEQ_DEBUG(1, printf("seq_delunit: 2 \n")); 645 cv_wait(&scp->th_cv, &scp->seq_lock); 646 SEQ_DEBUG(1, printf("seq_delunit: 3.0 \n")); 647 mtx_unlock(&scp->seq_lock); 648 SEQ_DEBUG(1, printf("seq_delunit: 3.1 \n")); 649 650 cv_destroy(&scp->state_cv); 651 SEQ_DEBUG(1, printf("seq_delunit: 4 \n")); 652 cv_destroy(&scp->empty_cv); 653 SEQ_DEBUG(1, printf("seq_delunit: 5 \n")); 654 cv_destroy(&scp->reset_cv); 655 SEQ_DEBUG(1, printf("seq_delunit: 6 \n")); 656 cv_destroy(&scp->out_cv); 657 SEQ_DEBUG(1, printf("seq_delunit: 7 \n")); 658 cv_destroy(&scp->in_cv); 659 SEQ_DEBUG(1, printf("seq_delunit: 8 \n")); 660 cv_destroy(&scp->th_cv); 661 662 SEQ_DEBUG(1, printf("seq_delunit: 10 \n")); 663 if (scp->seqdev) 664 destroy_dev(scp->seqdev); 665 SEQ_DEBUG(1, printf("seq_delunit: 11 \n")); 666 if (scp->musicdev) 667 destroy_dev(scp->musicdev); 668 SEQ_DEBUG(1, printf("seq_delunit: 12 \n")); 669 scp->seqdev = scp->musicdev = NULL; 670 if (scp->midis != NULL) 671 free(scp->midis, M_TEMP); 672 SEQ_DEBUG(1, printf("seq_delunit: 13 \n")); 673 if (scp->midi_flags != NULL) 674 free(scp->midi_flags, M_TEMP); 675 SEQ_DEBUG(1, printf("seq_delunit: 14 \n")); 676 free(scp->out_q.b, M_TEMP); 677 SEQ_DEBUG(1, printf("seq_delunit: 15 \n")); 678 free(scp->in_q.b, M_TEMP); 679 680 SEQ_DEBUG(1, printf("seq_delunit: 16 \n")); 681 682 mtx_destroy(&scp->seq_lock); 683 SEQ_DEBUG(1, printf("seq_delunit: 17 \n")); 684 free(scp, M_DEVBUF); 685 686 mtx_lock(&seqinfo_mtx); 687 for (i = unit; i < (nseq - 1); i++) 688 seqs[i] = seqs[i + 1]; 689 nseq--; 690 mtx_unlock(&seqinfo_mtx); 691 692 return 0; 693} 694 695int 696seq_modevent(module_t mod, int type, void *data) 697{ 698 int retval, r; 699 700 retval = 0; 701 702 switch (type) { 703 case MOD_LOAD: 704 mtx_init(&seqinfo_mtx, "seqmod", NULL, 0); 705 retval = seq_addunit(); 706 break; 707 708 case MOD_UNLOAD: 709 while (nseq) { 710 r = seq_delunit(nseq - 1); 711 if (r) { 712 retval = r; 713 break; 714 } 715 } 716 if (nseq == 0) { 717 retval = 0; 718 mtx_destroy(&seqinfo_mtx); 719 } 720 break; 721 722 default: 723 break; 724 } 725 726 return retval; 727} 728 729static int 730seq_fetch_mid(struct seq_softc *scp, int unit, kobj_t *md) 731{ 732 733 if (unit > scp->midi_number || unit < 0) 734 return EINVAL; 735 736 *md = scp->midis[unit]; 737 738 return 0; 739} 740 741int 742mseq_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 743{ 744 struct seq_softc *scp = i_dev->si_drv1; 745 int i; 746 747 if (scp == NULL) 748 return ENXIO; 749 750 SEQ_DEBUG(3, printf("seq_open: scp %p unit %d, flags 0x%x.\n", 751 scp, scp->unit, flags)); 752 753 /* 754 * Mark this device busy. 755 */ 756 757 mtx_lock(&scp->seq_lock); 758 if (scp->busy) { 759 mtx_unlock(&scp->seq_lock); 760 SEQ_DEBUG(2, printf("seq_open: unit %d is busy.\n", scp->unit)); 761 return EBUSY; 762 } 763 scp->fflags = flags; 764 /* 765 if ((scp->fflags & O_NONBLOCK) != 0) 766 scp->flags |= SEQ_F_NBIO; 767 */ 768 scp->music = MIDIDEV(i_dev) == SND_DEV_MUSIC; 769 770 /* 771 * Enumerate the available midi devices 772 */ 773 scp->midi_number = 0; 774 scp->maxunits = midimapper_open(scp->mapper, &scp->mapper_cookie); 775 776 if (scp->maxunits == 0) 777 SEQ_DEBUG(2, printf("seq_open: no midi devices\n")); 778 779 for (i = 0; i < scp->maxunits; i++) { 780 scp->midis[scp->midi_number] = 781 midimapper_fetch_synth(scp->mapper, scp->mapper_cookie, i); 782 if (scp->midis[scp->midi_number]) { 783 if (SYNTH_OPEN(scp->midis[scp->midi_number], scp, 784 scp->fflags) != 0) 785 scp->midis[scp->midi_number] = NULL; 786 else { 787 scp->midi_flags[scp->midi_number] = 788 SYNTH_QUERY(scp->midis[scp->midi_number]); 789 scp->midi_number++; 790 } 791 } 792 } 793 794 timer_setvals(scp, 60, 100); 795 796 timer_start(scp); 797 timer_stop(scp); 798 /* 799 * actually, if we're in rdonly mode, we should start the timer 800 */ 801 /* 802 * TODO: Handle recording now 803 */ 804 805 scp->out_water = MIDIQ_SIZE(scp->out_q) / 2; 806 807 scp->busy = 1; 808 mtx_unlock(&scp->seq_lock); 809 810 SEQ_DEBUG(2, printf("seq_open: opened, mode %s.\n", 811 scp->music ? "music" : "sequencer")); 812 SEQ_DEBUG(2, 813 printf("Sequencer %d %p opened maxunits %d midi_number %d:\n", 814 scp->unit, scp, scp->maxunits, scp->midi_number)); 815 for (i = 0; i < scp->midi_number; i++) 816 SEQ_DEBUG(3, printf(" midi %d %p\n", i, scp->midis[i])); 817 818 return 0; 819} 820 821/* 822 * mseq_close 823 */ 824int 825mseq_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 826{ 827 int i; 828 struct seq_softc *scp = i_dev->si_drv1; 829 int ret; 830 831 if (scp == NULL) 832 return ENXIO; 833 834 SEQ_DEBUG(2, printf("seq_close: unit %d.\n", scp->unit)); 835 836 mtx_lock(&scp->seq_lock); 837 838 ret = ENXIO; 839 if (scp->busy == 0) 840 goto err; 841 842 seq_reset(scp); 843 seq_sync(scp); 844 845 for (i = 0; i < scp->midi_number; i++) 846 if (scp->midis[i]) 847 SYNTH_CLOSE(scp->midis[i]); 848 849 midimapper_close(scp->mapper, scp->mapper_cookie); 850 851 timer_stop(scp); 852 853 scp->busy = 0; 854 ret = 0; 855 856err: 857 SEQ_DEBUG(3, printf("seq_close: closed ret = %d.\n", ret)); 858 mtx_unlock(&scp->seq_lock); 859 return ret; 860} 861 862int 863mseq_read(struct cdev *i_dev, struct uio *uio, int ioflag) 864{ 865 int retval, used; 866 struct seq_softc *scp = i_dev->si_drv1; 867 868#define SEQ_RSIZE 32 869 u_char buf[SEQ_RSIZE]; 870 871 if (scp == NULL) 872 return ENXIO; 873 874 SEQ_DEBUG(7, printf("mseq_read: unit %d, resid %zd.\n", 875 scp->unit, uio->uio_resid)); 876 877 mtx_lock(&scp->seq_lock); 878 if ((scp->fflags & FREAD) == 0) { 879 SEQ_DEBUG(2, printf("mseq_read: unit %d is not for reading.\n", 880 scp->unit)); 881 retval = EIO; 882 goto err1; 883 } 884 /* 885 * Begin recording. 886 */ 887 /* 888 * if ((scp->flags & SEQ_F_READING) == 0) 889 */ 890 /* 891 * TODO, start recording if not alread 892 */ 893 894 /* 895 * I think the semantics are to return as soon 896 * as possible. 897 * Second thought, it doens't seem like midimoutain 898 * expects that at all. 899 * TODO: Look up in some sort of spec 900 */ 901 902 while (uio->uio_resid > 0) { 903 while (MIDIQ_EMPTY(scp->in_q)) { 904 retval = EWOULDBLOCK; 905 /* 906 * I wish I knew which one to care about 907 */ 908 909 if (scp->fflags & O_NONBLOCK) 910 goto err1; 911 if (ioflag & O_NONBLOCK) 912 goto err1; 913 914 retval = cv_wait_sig(&scp->in_cv, &scp->seq_lock); 915 if (retval == EINTR) 916 goto err1; 917 } 918 919 used = MIN(MIDIQ_LEN(scp->in_q), uio->uio_resid); 920 used = MIN(used, SEQ_RSIZE); 921 922 SEQ_DEBUG(8, printf("midiread: uiomove cc=%d\n", used)); 923 MIDIQ_DEQ(scp->in_q, buf, used); 924 retval = uiomove(buf, used, uio); 925 if (retval) 926 goto err1; 927 } 928 929 retval = 0; 930err1: 931 mtx_unlock(&scp->seq_lock); 932 SEQ_DEBUG(6, printf("mseq_read: ret %d, resid %zd.\n", 933 retval, uio->uio_resid)); 934 935 return retval; 936} 937 938int 939mseq_write(struct cdev *i_dev, struct uio *uio, int ioflag) 940{ 941 u_char event[EV_SZ], newevent[EV_SZ], ev_code; 942 struct seq_softc *scp = i_dev->si_drv1; 943 int retval; 944 int used; 945 946 SEQ_DEBUG(7, printf("seq_write: unit %d, resid %zd.\n", 947 scp->unit, uio->uio_resid)); 948 949 if (scp == NULL) 950 return ENXIO; 951 952 mtx_lock(&scp->seq_lock); 953 954 if ((scp->fflags & FWRITE) == 0) { 955 SEQ_DEBUG(2, printf("seq_write: unit %d is not for writing.\n", 956 scp->unit)); 957 retval = EIO; 958 goto err0; 959 } 960 while (uio->uio_resid > 0) { 961 while (MIDIQ_AVAIL(scp->out_q) == 0) { 962 retval = EWOULDBLOCK; 963 if (scp->fflags & O_NONBLOCK) 964 goto err0; 965 if (ioflag & O_NONBLOCK) 966 goto err0; 967 SEQ_DEBUG(8, printf("seq_write cvwait\n")); 968 969 scp->playing = 1; 970 cv_broadcast(&scp->out_cv); 971 cv_broadcast(&scp->state_cv); 972 973 retval = cv_wait_sig(&scp->out_cv, &scp->seq_lock); 974 /* 975 * We slept, maybe things have changed since last 976 * dying check 977 */ 978 if (retval == EINTR) 979 goto err0; 980#if 0 981 /* 982 * Useless test 983 */ 984 if (scp != i_dev->si_drv1) 985 retval = ENXIO; 986#endif 987 } 988 989 used = MIN(uio->uio_resid, 4); 990 991 SEQ_DEBUG(8, printf("seqout: resid %zd len %jd avail %jd\n", 992 uio->uio_resid, (intmax_t)MIDIQ_LEN(scp->out_q), 993 (intmax_t)MIDIQ_AVAIL(scp->out_q))); 994 995 if (used != 4) { 996 retval = ENXIO; 997 goto err0; 998 } 999 retval = uiomove(event, used, uio); 1000 if (retval) 1001 goto err0; 1002 1003 ev_code = event[0]; 1004 SEQ_DEBUG(8, printf("seq_write: unit %d, event %s.\n", 1005 scp->unit, midi_cmdname(ev_code, cmdtab_seqevent))); 1006 1007 /* Have a look at the event code. */ 1008 if (ev_code == SEQ_FULLSIZE) { 1009 1010 /* 1011 * TODO: restore code for SEQ_FULLSIZE 1012 */ 1013#if 0 1014 /* 1015 * A long event, these are the patches/samples for a 1016 * synthesizer. 1017 */ 1018 midiunit = *(u_short *)&event[2]; 1019 mtx_lock(&sd->seq_lock); 1020 ret = lookup_mididev(scp, midiunit, LOOKUP_OPEN, &md); 1021 mtx_unlock(&sd->seq_lock); 1022 if (ret != 0) 1023 return (ret); 1024 1025 SEQ_DEBUG(printf("seq_write: loading a patch to the unit %d.\n", midiunit)); 1026 1027 ret = md->synth.loadpatch(md, *(short *)&event[0], buf, 1028 p + 4, count, 0); 1029 return (ret); 1030#else 1031 /* 1032 * For now, just flush the darn buffer 1033 */ 1034 SEQ_DEBUG(2, 1035 printf("seq_write: SEQ_FULLSIZE flusing buffer.\n")); 1036 while (uio->uio_resid > 0) { 1037 retval = uiomove(event, EV_SZ, uio); 1038 if (retval) 1039 goto err0; 1040 1041 } 1042 retval = 0; 1043 goto err0; 1044#endif 1045 } 1046 retval = EINVAL; 1047 if (ev_code >= 128) { 1048 1049 /* 1050 * Some sort of an extended event. The size is eight 1051 * bytes. scoop extra info. 1052 */ 1053 if (scp->music && ev_code == SEQ_EXTENDED) { 1054 SEQ_DEBUG(2, printf("seq_write: invalid level two event %x.\n", ev_code)); 1055 goto err0; 1056 } 1057 if (uiomove((caddr_t)&event[4], 4, uio)) { 1058 SEQ_DEBUG(2, 1059 printf("seq_write: user memory mangled?\n")); 1060 goto err0; 1061 } 1062 } else { 1063 /* 1064 * Size four event. 1065 */ 1066 if (scp->music) { 1067 SEQ_DEBUG(2, printf("seq_write: four byte event in music mode.\n")); 1068 goto err0; 1069 } 1070 } 1071 if (ev_code == SEQ_MIDIPUTC) { 1072 /* 1073 * TODO: event[2] is unit number to receive char. 1074 * Range check it. 1075 */ 1076 } 1077 if (scp->music) { 1078#ifdef not_ever_ever 1079 if (event[0] == EV_TIMING && 1080 (event[1] == TMR_START || event[1] == TMR_STOP)) { 1081 /* 1082 * For now, try to make midimoutain work by 1083 * forcing these events to be processed 1084 * immediatly. 1085 */ 1086 seq_processevent(scp, event); 1087 } else 1088 MIDIQ_ENQ(scp->out_q, event, EV_SZ); 1089#else 1090 MIDIQ_ENQ(scp->out_q, event, EV_SZ); 1091#endif 1092 } else { 1093 if (seq_convertold(event, newevent) > 0) 1094 MIDIQ_ENQ(scp->out_q, newevent, EV_SZ); 1095#if 0 1096 else 1097 goto err0; 1098#endif 1099 } 1100 1101 } 1102 1103 scp->playing = 1; 1104 cv_broadcast(&scp->state_cv); 1105 cv_broadcast(&scp->out_cv); 1106 1107 retval = 0; 1108 1109err0: 1110 SEQ_DEBUG(6, 1111 printf("seq_write done: leftover buffer length %zd retval %d\n", 1112 uio->uio_resid, retval)); 1113 mtx_unlock(&scp->seq_lock); 1114 return retval; 1115} 1116 1117int 1118mseq_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1119 struct thread *td) 1120{ 1121 int midiunit, ret, tmp; 1122 struct seq_softc *scp = i_dev->si_drv1; 1123 struct synth_info *synthinfo; 1124 struct midi_info *midiinfo; 1125 u_char event[EV_SZ]; 1126 u_char newevent[EV_SZ]; 1127 1128 kobj_t md; 1129 1130 /* 1131 * struct snd_size *sndsize; 1132 */ 1133 1134 if (scp == NULL) 1135 return ENXIO; 1136 1137 SEQ_DEBUG(6, printf("seq_ioctl: unit %d, cmd %s.\n", 1138 scp->unit, midi_cmdname(cmd, cmdtab_seqioctl))); 1139 1140 ret = 0; 1141 1142 switch (cmd) { 1143 case SNDCTL_SEQ_GETTIME: 1144 /* 1145 * ioctl needed by libtse 1146 */ 1147 mtx_lock(&scp->seq_lock); 1148 *(int *)arg = timer_now(scp); 1149 mtx_unlock(&scp->seq_lock); 1150 SEQ_DEBUG(6, printf("seq_ioctl: gettime %d.\n", *(int *)arg)); 1151 ret = 0; 1152 break; 1153 case SNDCTL_TMR_METRONOME: 1154 /* fallthrough */ 1155 case SNDCTL_TMR_SOURCE: 1156 /* 1157 * Not implemented 1158 */ 1159 ret = 0; 1160 break; 1161 case SNDCTL_TMR_TEMPO: 1162 event[1] = TMR_TEMPO; 1163 event[4] = *(int *)arg & 0xFF; 1164 event[5] = (*(int *)arg >> 8) & 0xFF; 1165 event[6] = (*(int *)arg >> 16) & 0xFF; 1166 event[7] = (*(int *)arg >> 24) & 0xFF; 1167 goto timerevent; 1168 case SNDCTL_TMR_TIMEBASE: 1169 event[1] = TMR_TIMERBASE; 1170 event[4] = *(int *)arg & 0xFF; 1171 event[5] = (*(int *)arg >> 8) & 0xFF; 1172 event[6] = (*(int *)arg >> 16) & 0xFF; 1173 event[7] = (*(int *)arg >> 24) & 0xFF; 1174 goto timerevent; 1175 case SNDCTL_TMR_START: 1176 event[1] = TMR_START; 1177 goto timerevent; 1178 case SNDCTL_TMR_STOP: 1179 event[1] = TMR_STOP; 1180 goto timerevent; 1181 case SNDCTL_TMR_CONTINUE: 1182 event[1] = TMR_CONTINUE; 1183timerevent: 1184 event[0] = EV_TIMING; 1185 mtx_lock(&scp->seq_lock); 1186 if (!scp->music) { 1187 ret = EINVAL; 1188 mtx_unlock(&scp->seq_lock); 1189 break; 1190 } 1191 seq_processevent(scp, event); 1192 mtx_unlock(&scp->seq_lock); 1193 break; 1194 case SNDCTL_TMR_SELECT: 1195 SEQ_DEBUG(2, 1196 printf("seq_ioctl: SNDCTL_TMR_SELECT not supported\n")); 1197 ret = EINVAL; 1198 break; 1199 case SNDCTL_SEQ_SYNC: 1200 if (mode == O_RDONLY) { 1201 ret = 0; 1202 break; 1203 } 1204 mtx_lock(&scp->seq_lock); 1205 ret = seq_sync(scp); 1206 mtx_unlock(&scp->seq_lock); 1207 break; 1208 case SNDCTL_SEQ_PANIC: 1209 /* fallthrough */ 1210 case SNDCTL_SEQ_RESET: 1211 /* 1212 * SNDCTL_SEQ_PANIC == SNDCTL_SEQ_RESET 1213 */ 1214 mtx_lock(&scp->seq_lock); 1215 seq_reset(scp); 1216 mtx_unlock(&scp->seq_lock); 1217 ret = 0; 1218 break; 1219 case SNDCTL_SEQ_TESTMIDI: 1220 mtx_lock(&scp->seq_lock); 1221 /* 1222 * TODO: SNDCTL_SEQ_TESTMIDI now means "can I write to the 1223 * device?". 1224 */ 1225 mtx_unlock(&scp->seq_lock); 1226 break; 1227#if 0 1228 case SNDCTL_SEQ_GETINCOUNT: 1229 if (mode == O_WRONLY) 1230 *(int *)arg = 0; 1231 else { 1232 mtx_lock(&scp->seq_lock); 1233 *(int *)arg = scp->in_q.rl; 1234 mtx_unlock(&scp->seq_lock); 1235 SEQ_DEBUG(printf("seq_ioctl: incount %d.\n", 1236 *(int *)arg)); 1237 } 1238 ret = 0; 1239 break; 1240 case SNDCTL_SEQ_GETOUTCOUNT: 1241 if (mode == O_RDONLY) 1242 *(int *)arg = 0; 1243 else { 1244 mtx_lock(&scp->seq_lock); 1245 *(int *)arg = scp->out_q.fl; 1246 mtx_unlock(&scp->seq_lock); 1247 SEQ_DEBUG(printf("seq_ioctl: outcount %d.\n", 1248 *(int *)arg)); 1249 } 1250 ret = 0; 1251 break; 1252#endif 1253 case SNDCTL_SEQ_CTRLRATE: 1254 if (*(int *)arg != 0) { 1255 ret = EINVAL; 1256 break; 1257 } 1258 mtx_lock(&scp->seq_lock); 1259 *(int *)arg = scp->timerbase; 1260 mtx_unlock(&scp->seq_lock); 1261 SEQ_DEBUG(3, printf("seq_ioctl: ctrlrate %d.\n", *(int *)arg)); 1262 ret = 0; 1263 break; 1264 /* 1265 * TODO: ioctl SNDCTL_SEQ_RESETSAMPLES 1266 */ 1267#if 0 1268 case SNDCTL_SEQ_RESETSAMPLES: 1269 mtx_lock(&scp->seq_lock); 1270 ret = lookup_mididev(scp, *(int *)arg, LOOKUP_OPEN, &md); 1271 mtx_unlock(&scp->seq_lock); 1272 if (ret != 0) 1273 break; 1274 ret = midi_ioctl(MIDIMKDEV(major(i_dev), *(int *)arg, 1275 SND_DEV_MIDIN), cmd, arg, mode, td); 1276 break; 1277#endif 1278 case SNDCTL_SEQ_NRSYNTHS: 1279 mtx_lock(&scp->seq_lock); 1280 *(int *)arg = scp->midi_number; 1281 mtx_unlock(&scp->seq_lock); 1282 SEQ_DEBUG(3, printf("seq_ioctl: synths %d.\n", *(int *)arg)); 1283 ret = 0; 1284 break; 1285 case SNDCTL_SEQ_NRMIDIS: 1286 mtx_lock(&scp->seq_lock); 1287 if (scp->music) 1288 *(int *)arg = 0; 1289 else { 1290 /* 1291 * TODO: count the numbder of devices that can WRITERAW 1292 */ 1293 *(int *)arg = scp->midi_number; 1294 } 1295 mtx_unlock(&scp->seq_lock); 1296 SEQ_DEBUG(3, printf("seq_ioctl: midis %d.\n", *(int *)arg)); 1297 ret = 0; 1298 break; 1299 /* 1300 * TODO: ioctl SNDCTL_SYNTH_MEMAVL 1301 */ 1302#if 0 1303 case SNDCTL_SYNTH_MEMAVL: 1304 mtx_lock(&scp->seq_lock); 1305 ret = lookup_mididev(scp, *(int *)arg, LOOKUP_OPEN, &md); 1306 mtx_unlock(&scp->seq_lock); 1307 if (ret != 0) 1308 break; 1309 ret = midi_ioctl(MIDIMKDEV(major(i_dev), *(int *)arg, 1310 SND_DEV_MIDIN), cmd, arg, mode, td); 1311 break; 1312#endif 1313 case SNDCTL_SEQ_OUTOFBAND: 1314 for (ret = 0; ret < EV_SZ; ret++) 1315 event[ret] = (u_char)arg[0]; 1316 1317 mtx_lock(&scp->seq_lock); 1318 if (scp->music) 1319 ret = seq_processevent(scp, event); 1320 else { 1321 if (seq_convertold(event, newevent) > 0) 1322 ret = seq_processevent(scp, newevent); 1323 else 1324 ret = EINVAL; 1325 } 1326 mtx_unlock(&scp->seq_lock); 1327 break; 1328 case SNDCTL_SYNTH_INFO: 1329 synthinfo = (struct synth_info *)arg; 1330 midiunit = synthinfo->device; 1331 mtx_lock(&scp->seq_lock); 1332 if (seq_fetch_mid(scp, midiunit, &md) == 0) { 1333 bzero(synthinfo, sizeof(*synthinfo)); 1334 synthinfo->name[0] = 'f'; 1335 synthinfo->name[1] = 'a'; 1336 synthinfo->name[2] = 'k'; 1337 synthinfo->name[3] = 'e'; 1338 synthinfo->name[4] = 's'; 1339 synthinfo->name[5] = 'y'; 1340 synthinfo->name[6] = 'n'; 1341 synthinfo->name[7] = 't'; 1342 synthinfo->name[8] = 'h'; 1343 synthinfo->device = midiunit; 1344 synthinfo->synth_type = SYNTH_TYPE_MIDI; 1345 synthinfo->capabilities = scp->midi_flags[midiunit]; 1346 ret = 0; 1347 } else 1348 ret = EINVAL; 1349 mtx_unlock(&scp->seq_lock); 1350 break; 1351 case SNDCTL_MIDI_INFO: 1352 midiinfo = (struct midi_info *)arg; 1353 midiunit = midiinfo->device; 1354 mtx_lock(&scp->seq_lock); 1355 if (seq_fetch_mid(scp, midiunit, &md) == 0) { 1356 bzero(midiinfo, sizeof(*midiinfo)); 1357 midiinfo->name[0] = 'f'; 1358 midiinfo->name[1] = 'a'; 1359 midiinfo->name[2] = 'k'; 1360 midiinfo->name[3] = 'e'; 1361 midiinfo->name[4] = 'm'; 1362 midiinfo->name[5] = 'i'; 1363 midiinfo->name[6] = 'd'; 1364 midiinfo->name[7] = 'i'; 1365 midiinfo->device = midiunit; 1366 midiinfo->capabilities = scp->midi_flags[midiunit]; 1367 /* 1368 * TODO: What devtype? 1369 */ 1370 midiinfo->dev_type = 0x01; 1371 ret = 0; 1372 } else 1373 ret = EINVAL; 1374 mtx_unlock(&scp->seq_lock); 1375 break; 1376 case SNDCTL_SEQ_THRESHOLD: 1377 mtx_lock(&scp->seq_lock); 1378 RANGE(*(int *)arg, 1, MIDIQ_SIZE(scp->out_q) - 1); 1379 scp->out_water = *(int *)arg; 1380 mtx_unlock(&scp->seq_lock); 1381 SEQ_DEBUG(3, printf("seq_ioctl: water %d.\n", *(int *)arg)); 1382 ret = 0; 1383 break; 1384 case SNDCTL_MIDI_PRETIME: 1385 tmp = *(int *)arg; 1386 if (tmp < 0) 1387 tmp = 0; 1388 mtx_lock(&scp->seq_lock); 1389 scp->pre_event_timeout = (hz * tmp) / 10; 1390 *(int *)arg = scp->pre_event_timeout; 1391 mtx_unlock(&scp->seq_lock); 1392 SEQ_DEBUG(3, printf("seq_ioctl: pretime %d.\n", *(int *)arg)); 1393 ret = 0; 1394 break; 1395 case SNDCTL_FM_4OP_ENABLE: 1396 case SNDCTL_PMGR_IFACE: 1397 case SNDCTL_PMGR_ACCESS: 1398 /* 1399 * Patch manager and fm are ded, ded, ded. 1400 */ 1401 /* fallthrough */ 1402 default: 1403 /* 1404 * TODO: Consider ioctl default case. 1405 * Old code used to 1406 * if ((scp->fflags & O_ACCMODE) == FREAD) { 1407 * ret = EIO; 1408 * break; 1409 * } 1410 * Then pass on the ioctl to device 0 1411 */ 1412 SEQ_DEBUG(2, 1413 printf("seq_ioctl: unsupported IOCTL %ld.\n", cmd)); 1414 ret = EINVAL; 1415 break; 1416 } 1417 1418 return ret; 1419} 1420 1421int 1422mseq_poll(struct cdev *i_dev, int events, struct thread *td) 1423{ 1424 int ret, lim; 1425 struct seq_softc *scp = i_dev->si_drv1; 1426 1427 SEQ_DEBUG(3, printf("seq_poll: unit %d.\n", scp->unit)); 1428 SEQ_DEBUG(1, printf("seq_poll: unit %d.\n", scp->unit)); 1429 1430 mtx_lock(&scp->seq_lock); 1431 1432 ret = 0; 1433 1434 /* Look up the apropriate queue and select it. */ 1435 if ((events & (POLLOUT | POLLWRNORM)) != 0) { 1436 /* Start playing. */ 1437 scp->playing = 1; 1438 cv_broadcast(&scp->state_cv); 1439 cv_broadcast(&scp->out_cv); 1440 1441 lim = scp->out_water; 1442 1443 if (MIDIQ_AVAIL(scp->out_q) < lim) 1444 /* No enough space, record select. */ 1445 selrecord(td, &scp->out_sel); 1446 else 1447 /* We can write now. */ 1448 ret |= events & (POLLOUT | POLLWRNORM); 1449 } 1450 if ((events & (POLLIN | POLLRDNORM)) != 0) { 1451 /* TODO: Start recording. */ 1452 1453 /* Find out the boundary. */ 1454 lim = 1; 1455 if (MIDIQ_LEN(scp->in_q) < lim) 1456 /* No data ready, record select. */ 1457 selrecord(td, &scp->in_sel); 1458 else 1459 /* We can read now. */ 1460 ret |= events & (POLLIN | POLLRDNORM); 1461 } 1462 mtx_unlock(&scp->seq_lock); 1463 1464 return (ret); 1465} 1466 1467#if 0 1468static void 1469sein_qtr(void *p, void /* mididev_info */ *md) 1470{ 1471 struct seq_softc *scp; 1472 1473 scp = (struct seq_softc *)p; 1474 1475 mtx_lock(&scp->seq_lock); 1476 1477 /* Restart playing if we have the data to output. */ 1478 if (scp->queueout_pending) 1479 seq_callback(scp, SEQ_CB_START | SEQ_CB_WR); 1480 /* Check the midi device if we are reading. */ 1481 if ((scp->flags & SEQ_F_READING) != 0) 1482 seq_midiinput(scp, md); 1483 1484 mtx_unlock(&scp->seq_lock); 1485} 1486 1487#endif 1488/* 1489 * seq_convertold 1490 * Was the old playevent. Use this to convert and old 1491 * style /dev/sequencer event to a /dev/music event 1492 */ 1493static int 1494seq_convertold(u_char *event, u_char *out) 1495{ 1496 int used; 1497 u_char dev, chn, note, vel; 1498 1499 out[0] = out[1] = out[2] = out[3] = out[4] = out[5] = out[6] = 1500 out[7] = 0; 1501 1502 dev = 0; 1503 chn = event[1]; 1504 note = event[2]; 1505 vel = event[3]; 1506 1507 used = 0; 1508 1509restart: 1510 /* 1511 * TODO: Debug statement 1512 */ 1513 switch (event[0]) { 1514 case EV_TIMING: 1515 case EV_CHN_VOICE: 1516 case EV_CHN_COMMON: 1517 case EV_SYSEX: 1518 case EV_SEQ_LOCAL: 1519 out[0] = event[0]; 1520 out[1] = event[1]; 1521 out[2] = event[2]; 1522 out[3] = event[3]; 1523 out[4] = event[4]; 1524 out[5] = event[5]; 1525 out[6] = event[6]; 1526 out[7] = event[7]; 1527 used += 8; 1528 break; 1529 case SEQ_NOTEOFF: 1530 out[0] = EV_CHN_VOICE; 1531 out[1] = dev; 1532 out[2] = MIDI_NOTEOFF; 1533 out[3] = chn; 1534 out[4] = note; 1535 out[5] = 255; 1536 used += 4; 1537 break; 1538 1539 case SEQ_NOTEON: 1540 out[0] = EV_CHN_VOICE; 1541 out[1] = dev; 1542 out[2] = MIDI_NOTEON; 1543 out[3] = chn; 1544 out[4] = note; 1545 out[5] = vel; 1546 used += 4; 1547 break; 1548 1549 /* 1550 * wait delay = (event[2] << 16) + (event[3] << 8) + event[4] 1551 */ 1552 1553 case SEQ_PGMCHANGE: 1554 out[0] = EV_CHN_COMMON; 1555 out[1] = dev; 1556 out[2] = MIDI_PGM_CHANGE; 1557 out[3] = chn; 1558 out[4] = note; 1559 out[5] = vel; 1560 used += 4; 1561 break; 1562/* 1563 out[0] = EV_TIMING; 1564 out[1] = dev; 1565 out[2] = MIDI_PGM_CHANGE; 1566 out[3] = chn; 1567 out[4] = note; 1568 out[5] = vel; 1569 SEQ_DEBUG(4,printf("seq_playevent: synctimer\n")); 1570 break; 1571*/ 1572 1573 case SEQ_MIDIPUTC: 1574 SEQ_DEBUG(4, 1575 printf("seq_playevent: put data 0x%02x, unit %d.\n", 1576 event[1], event[2])); 1577 /* 1578 * Pass through to the midi device. 1579 * device = event[2] 1580 * data = event[1] 1581 */ 1582 out[0] = SEQ_MIDIPUTC; 1583 out[1] = dev; 1584 out[2] = chn; 1585 used += 4; 1586 break; 1587#ifdef notyet 1588 case SEQ_ECHO: 1589 /* 1590 * This isn't handled here yet because I don't know if I can 1591 * just use four bytes events. There might be consequences 1592 * in the _read routing 1593 */ 1594 if (seq_copytoinput(scp, event, 4) == EAGAIN) { 1595 ret = QUEUEFULL; 1596 break; 1597 } 1598 ret = MORE; 1599 break; 1600#endif 1601 case SEQ_EXTENDED: 1602 switch (event[1]) { 1603 case SEQ_NOTEOFF: 1604 case SEQ_NOTEON: 1605 case SEQ_PGMCHANGE: 1606 event++; 1607 used = 4; 1608 goto restart; 1609 break; 1610 case SEQ_AFTERTOUCH: 1611 /* 1612 * SYNTH_AFTERTOUCH(md, event[3], event[4]) 1613 */ 1614 case SEQ_BALANCE: 1615 /* 1616 * SYNTH_PANNING(md, event[3], (char)event[4]) 1617 */ 1618 case SEQ_CONTROLLER: 1619 /* 1620 * SYNTH_CONTROLLER(md, event[3], event[4], *(short *)&event[5]) 1621 */ 1622 case SEQ_VOLMODE: 1623 /* 1624 * SYNTH_VOLUMEMETHOD(md, event[3]) 1625 */ 1626 default: 1627 SEQ_DEBUG(2, 1628 printf("seq_convertold: SEQ_EXTENDED type %d" 1629 "not handled\n", event[1])); 1630 break; 1631 } 1632 break; 1633 case SEQ_WAIT: 1634 out[0] = EV_TIMING; 1635 out[1] = TMR_WAIT_REL; 1636 out[4] = event[2]; 1637 out[5] = event[3]; 1638 out[6] = event[4]; 1639 1640 SEQ_DEBUG(5, printf("SEQ_WAIT %d", 1641 event[2] + (event[3] << 8) + (event[4] << 24))); 1642 1643 used += 4; 1644 break; 1645 1646 case SEQ_ECHO: 1647 case SEQ_SYNCTIMER: 1648 case SEQ_PRIVATE: 1649 default: 1650 SEQ_DEBUG(2, 1651 printf("seq_convertold: event type %d not handled %d %d %d\n", 1652 event[0], event[1], event[2], event[3])); 1653 break; 1654 } 1655 return used; 1656} 1657 1658/* 1659 * Writting to the sequencer buffer never blocks and drops 1660 * input which cannot be queued 1661 */ 1662void 1663seq_copytoinput(struct seq_softc *scp, u_char *event, int len) 1664{ 1665 1666 mtx_assert(&scp->seq_lock, MA_OWNED); 1667 1668 if (MIDIQ_AVAIL(scp->in_q) < len) { 1669 /* 1670 * ENOROOM? EINPUTDROPPED? ETOUGHLUCK? 1671 */ 1672 SEQ_DEBUG(2, printf("seq_copytoinput: queue full\n")); 1673 } else { 1674 MIDIQ_ENQ(scp->in_q, event, len); 1675 selwakeup(&scp->in_sel); 1676 cv_broadcast(&scp->in_cv); 1677 } 1678 1679} 1680 1681static int 1682seq_chnvoice(struct seq_softc *scp, kobj_t md, u_char *event) 1683{ 1684 int ret, voice; 1685 u_char cmd, chn, note, parm; 1686 1687 ret = 0; 1688 cmd = event[2]; 1689 chn = event[3]; 1690 note = event[4]; 1691 parm = event[5]; 1692 1693 mtx_assert(&scp->seq_lock, MA_OWNED); 1694 1695 SEQ_DEBUG(5, printf("seq_chnvoice: unit %d, dev %d, cmd %s," 1696 " chn %d, note %d, parm %d.\n", scp->unit, event[1], 1697 midi_cmdname(cmd, cmdtab_seqcv), chn, note, parm)); 1698 1699 voice = SYNTH_ALLOC(md, chn, note); 1700 1701 mtx_unlock(&scp->seq_lock); 1702 1703 switch (cmd) { 1704 case MIDI_NOTEON: 1705 if (note < 128 || note == 255) { 1706#if 0 1707 if (scp->music && chn == 9) { 1708 /* 1709 * This channel is a percussion. The note 1710 * number is the patch number. 1711 */ 1712 /* 1713 mtx_unlock(&scp->seq_lock); 1714 if (SYNTH_SETINSTR(md, voice, 128 + note) 1715 == EAGAIN) { 1716 mtx_lock(&scp->seq_lock); 1717 return (QUEUEFULL); 1718 } 1719 mtx_lock(&scp->seq_lock); 1720 */ 1721 note = 60; /* Middle C. */ 1722 } 1723#endif 1724 if (scp->music) { 1725 /* 1726 mtx_unlock(&scp->seq_lock); 1727 if (SYNTH_SETUPVOICE(md, voice, chn) 1728 == EAGAIN) { 1729 mtx_lock(&scp->seq_lock); 1730 return (QUEUEFULL); 1731 } 1732 mtx_lock(&scp->seq_lock); 1733 */ 1734 } 1735 SYNTH_STARTNOTE(md, voice, note, parm); 1736 } 1737 break; 1738 case MIDI_NOTEOFF: 1739 SYNTH_KILLNOTE(md, voice, note, parm); 1740 break; 1741 case MIDI_KEY_PRESSURE: 1742 SYNTH_AFTERTOUCH(md, voice, parm); 1743 break; 1744 default: 1745 ret = 1; 1746 SEQ_DEBUG(2, printf("seq_chnvoice event type %d not handled\n", 1747 event[1])); 1748 break; 1749 } 1750 1751 mtx_lock(&scp->seq_lock); 1752 return ret; 1753} 1754 1755static int 1756seq_chncommon(struct seq_softc *scp, kobj_t md, u_char *event) 1757{ 1758 int ret; 1759 u_short w14; 1760 u_char cmd, chn, p1; 1761 1762 ret = 0; 1763 cmd = event[2]; 1764 chn = event[3]; 1765 p1 = event[4]; 1766 w14 = *(u_short *)&event[6]; 1767 1768 SEQ_DEBUG(5, printf("seq_chncommon: unit %d, dev %d, cmd %s, chn %d," 1769 " p1 %d, w14 %d.\n", scp->unit, event[1], 1770 midi_cmdname(cmd, cmdtab_seqccmn), chn, p1, w14)); 1771 mtx_unlock(&scp->seq_lock); 1772 switch (cmd) { 1773 case MIDI_PGM_CHANGE: 1774 SEQ_DEBUG(4, printf("seq_chncommon pgmchn chn %d pg %d\n", 1775 chn, p1)); 1776 SYNTH_SETINSTR(md, chn, p1); 1777 break; 1778 case MIDI_CTL_CHANGE: 1779 SEQ_DEBUG(4, printf("seq_chncommon ctlch chn %d pg %d %d\n", 1780 chn, p1, w14)); 1781 SYNTH_CONTROLLER(md, chn, p1, w14); 1782 break; 1783 case MIDI_PITCH_BEND: 1784 if (scp->music) { 1785 /* 1786 * TODO: MIDI_PITCH_BEND 1787 */ 1788#if 0 1789 mtx_lock(&md->synth.vc_mtx); 1790 md->synth.chn_info[chn].bender_value = w14; 1791 if (md->midiunit >= 0) { 1792 /* 1793 * Handle all of the notes playing on this 1794 * channel. 1795 */ 1796 key = ((int)chn << 8); 1797 for (i = 0; i < md->synth.alloc.max_voice; i++) 1798 if ((md->synth.alloc.map[i] & 0xff00) == key) { 1799 mtx_unlock(&md->synth.vc_mtx); 1800 mtx_unlock(&scp->seq_lock); 1801 if (md->synth.bender(md, i, w14) == EAGAIN) { 1802 mtx_lock(&scp->seq_lock); 1803 return (QUEUEFULL); 1804 } 1805 mtx_lock(&scp->seq_lock); 1806 } 1807 } else { 1808 mtx_unlock(&md->synth.vc_mtx); 1809 mtx_unlock(&scp->seq_lock); 1810 if (md->synth.bender(md, chn, w14) == EAGAIN) { 1811 mtx_lock(&scp->seq_lock); 1812 return (QUEUEFULL); 1813 } 1814 mtx_lock(&scp->seq_lock); 1815 } 1816#endif 1817 } else 1818 SYNTH_BENDER(md, chn, w14); 1819 break; 1820 default: 1821 ret = 1; 1822 SEQ_DEBUG(2, 1823 printf("seq_chncommon event type %d not handled.\n", 1824 event[1])); 1825 break; 1826 1827 } 1828 mtx_lock(&scp->seq_lock); 1829 return ret; 1830} 1831 1832static int 1833seq_timing(struct seq_softc *scp, u_char *event) 1834{ 1835 int param; 1836 int ret; 1837 1838 ret = 0; 1839 param = event[4] + (event[5] << 8) + 1840 (event[6] << 16) + (event[7] << 24); 1841 1842 SEQ_DEBUG(5, printf("seq_timing: unit %d, cmd %d, param %d.\n", 1843 scp->unit, event[1], param)); 1844 switch (event[1]) { 1845 case TMR_WAIT_REL: 1846 timer_wait(scp, param, 0); 1847 break; 1848 case TMR_WAIT_ABS: 1849 timer_wait(scp, param, 1); 1850 break; 1851 case TMR_START: 1852 timer_start(scp); 1853 cv_broadcast(&scp->reset_cv); 1854 break; 1855 case TMR_STOP: 1856 timer_stop(scp); 1857 /* 1858 * The following cv_broadcast isn't needed since we only 1859 * wait for 0->1 transitions. It probably won't hurt 1860 */ 1861 cv_broadcast(&scp->reset_cv); 1862 break; 1863 case TMR_CONTINUE: 1864 timer_continue(scp); 1865 cv_broadcast(&scp->reset_cv); 1866 break; 1867 case TMR_TEMPO: 1868 if (param < 8) 1869 param = 8; 1870 if (param > 360) 1871 param = 360; 1872 SEQ_DEBUG(4, printf("Timer set tempo %d\n", param)); 1873 timer_setvals(scp, param, scp->timerbase); 1874 break; 1875 case TMR_TIMERBASE: 1876 if (param < 1) 1877 param = 1; 1878 if (param > 1000) 1879 param = 1000; 1880 SEQ_DEBUG(4, printf("Timer set timerbase %d\n", param)); 1881 timer_setvals(scp, scp->tempo, param); 1882 break; 1883 case TMR_ECHO: 1884 /* 1885 * TODO: Consider making 4-byte events for /dev/sequencer 1886 * PRO: Maybe needed by legacy apps 1887 * CON: soundcard.h has been warning for a while many years 1888 * to expect 8 byte events. 1889 */ 1890#if 0 1891 if (scp->music) 1892 seq_copytoinput(scp, event, 8); 1893 else { 1894 param = (param << 8 | SEQ_ECHO); 1895 seq_copytoinput(scp, (u_char *)¶m, 4); 1896 } 1897#else 1898 seq_copytoinput(scp, event, 8); 1899#endif 1900 break; 1901 default: 1902 SEQ_DEBUG(2, printf("seq_timing event type %d not handled.\n", 1903 event[1])); 1904 ret = 1; 1905 break; 1906 } 1907 return ret; 1908} 1909 1910static int 1911seq_local(struct seq_softc *scp, u_char *event) 1912{ 1913 int ret; 1914 1915 ret = 0; 1916 mtx_assert(&scp->seq_lock, MA_OWNED); 1917 1918 SEQ_DEBUG(5, printf("seq_local: unit %d, cmd %d\n", scp->unit, 1919 event[1])); 1920 switch (event[1]) { 1921 default: 1922 SEQ_DEBUG(1, printf("seq_local event type %d not handled\n", 1923 event[1])); 1924 ret = 1; 1925 break; 1926 } 1927 return ret; 1928} 1929 1930static int 1931seq_sysex(struct seq_softc *scp, kobj_t md, u_char *event) 1932{ 1933 int i, l; 1934 1935 mtx_assert(&scp->seq_lock, MA_OWNED); 1936 SEQ_DEBUG(5, printf("seq_sysex: unit %d device %d\n", scp->unit, 1937 event[1])); 1938 l = 0; 1939 for (i = 0; i < 6 && event[i + 2] != 0xff; i++) 1940 l = i + 1; 1941 if (l > 0) { 1942 mtx_unlock(&scp->seq_lock); 1943 if (SYNTH_SENDSYSEX(md, &event[2], l) == EAGAIN) { 1944 mtx_lock(&scp->seq_lock); 1945 return 1; 1946 } 1947 mtx_lock(&scp->seq_lock); 1948 } 1949 return 0; 1950} 1951 1952/* 1953 * Reset no longer closes the raw devices nor seq_sync's 1954 * Callers are IOCTL and seq_close 1955 */ 1956static void 1957seq_reset(struct seq_softc *scp) 1958{ 1959 int chn, i; 1960 kobj_t m; 1961 1962 mtx_assert(&scp->seq_lock, MA_OWNED); 1963 1964 SEQ_DEBUG(5, printf("seq_reset: unit %d.\n", scp->unit)); 1965 1966 /* 1967 * Stop reading and writing. 1968 */ 1969 1970 /* scp->recording = 0; */ 1971 scp->playing = 0; 1972 cv_broadcast(&scp->state_cv); 1973 cv_broadcast(&scp->out_cv); 1974 cv_broadcast(&scp->reset_cv); 1975 1976 /* 1977 * For now, don't reset the timers. 1978 */ 1979 MIDIQ_CLEAR(scp->in_q); 1980 MIDIQ_CLEAR(scp->out_q); 1981 1982 for (i = 0; i < scp->midi_number; i++) { 1983 m = scp->midis[i]; 1984 mtx_unlock(&scp->seq_lock); 1985 SYNTH_RESET(m); 1986 for (chn = 0; chn < 16; chn++) { 1987 SYNTH_CONTROLLER(m, chn, 123, 0); 1988 SYNTH_CONTROLLER(m, chn, 121, 0); 1989 SYNTH_BENDER(m, chn, 1 << 13); 1990 } 1991 mtx_lock(&scp->seq_lock); 1992 } 1993} 1994 1995/* 1996 * seq_sync 1997 * *really* flush the output queue 1998 * flush the event queue, then flush the synthsisers. 1999 * Callers are IOCTL and close 2000 */ 2001 2002#define SEQ_SYNC_TIMEOUT 8 2003static int 2004seq_sync(struct seq_softc *scp) 2005{ 2006 int i, rl, sync[16], done; 2007 2008 mtx_assert(&scp->seq_lock, MA_OWNED); 2009 2010 SEQ_DEBUG(4, printf("seq_sync: unit %d.\n", scp->unit)); 2011 2012 /* 2013 * Wait until output queue is empty. Check every so often to see if 2014 * the queue is moving along. If it isn't just abort. 2015 */ 2016 while (!MIDIQ_EMPTY(scp->out_q)) { 2017 2018 if (!scp->playing) { 2019 scp->playing = 1; 2020 cv_broadcast(&scp->state_cv); 2021 cv_broadcast(&scp->out_cv); 2022 } 2023 rl = MIDIQ_LEN(scp->out_q); 2024 2025 i = cv_timedwait_sig(&scp->out_cv, 2026 &scp->seq_lock, SEQ_SYNC_TIMEOUT * hz); 2027 2028 if (i == EINTR || i == ERESTART) { 2029 if (i == EINTR) { 2030 /* 2031 * XXX: I don't know why we stop playing 2032 */ 2033 scp->playing = 0; 2034 cv_broadcast(&scp->out_cv); 2035 } 2036 return i; 2037 } 2038 if (i == EWOULDBLOCK && rl == MIDIQ_LEN(scp->out_q) && 2039 scp->waiting == 0) { 2040 /* 2041 * A queue seems to be stuck up. Give up and clear 2042 * queues. 2043 */ 2044 MIDIQ_CLEAR(scp->out_q); 2045 scp->playing = 0; 2046 cv_broadcast(&scp->state_cv); 2047 cv_broadcast(&scp->out_cv); 2048 cv_broadcast(&scp->reset_cv); 2049 2050 /* 2051 * TODO: Consider if the raw devices need to be flushed 2052 */ 2053 2054 SEQ_DEBUG(1, printf("seq_sync queue stuck, aborting\n")); 2055 2056 return i; 2057 } 2058 } 2059 2060 scp->playing = 0; 2061 /* 2062 * Since syncing a midi device might block, unlock scp->seq_lock. 2063 */ 2064 2065 mtx_unlock(&scp->seq_lock); 2066 for (i = 0; i < scp->midi_number; i++) 2067 sync[i] = 1; 2068 2069 do { 2070 done = 1; 2071 for (i = 0; i < scp->midi_number; i++) 2072 if (sync[i]) { 2073 if (SYNTH_INSYNC(scp->midis[i]) == 0) 2074 sync[i] = 0; 2075 else 2076 done = 0; 2077 } 2078 if (!done) 2079 DELAY(5000); 2080 2081 } while (!done); 2082 2083 mtx_lock(&scp->seq_lock); 2084 return 0; 2085} 2086 2087char * 2088midi_cmdname(int cmd, midi_cmdtab *tab) 2089{ 2090 while (tab->name != NULL) { 2091 if (cmd == tab->cmd) 2092 return (tab->name); 2093 tab++; 2094 } 2095 2096 return ("unknown"); 2097} 2098