sys/dev/sound/midi/sequencer.c

   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/proc.h>
  44 #include <sys/sysctl.h>
  45
  46 #include <sys/kernel.h>                 /* for DATA_SET */
  47
  48 #include <sys/module.h>
  49 #include <sys/conf.h>
  50 #include <sys/file.h>
  51 #include <sys/uio.h>
  52 #include <sys/syslog.h>
  53 #include <sys/errno.h>
  54 #include <sys/malloc.h>
  55 #include <sys/bus.h>
  56 #include <machine/resource.h>
  57 #include <machine/bus.h>
  58 #include <machine/clock.h>              /* for DELAY */
  59 #include <sys/soundcard.h>
  60 #include <sys/rman.h>
  61 #include <sys/mman.h>
  62 #include <sys/poll.h>
  63 #include <sys/mutex.h>
  64 #include <sys/condvar.h>
  65 #include <sys/kthread.h>
  66 #include <sys/unistd.h>
  67 #include <sys/selinfo.h>
  68
  69 #ifdef HAVE_KERNEL_OPTION_HEADERS
  70 #include "opt_snd.h"
  71 #endif
  72
  73 #include <dev/sound/midi/midi.h>
  74 #include <dev/sound/midi/midiq.h>
  75 #include "synth_if.h"
  76
  77 #include <dev/sound/midi/sequencer.h>
  78
  79 #define TMR_TIMERBASE 13
  80
  81 #define SND_DEV_SEQ     1               /* Sequencer output /dev/sequencer (FM
  82                                          * synthesizer and MIDI output) */
  83 #define SND_DEV_MUSIC   8               /* /dev/music, level 2 interface */
  84
  85 /* Length of a sequencer event. */
  86 #define EV_SZ 8
  87 #define IEV_SZ 8
  88
  89 /* Lookup modes */
  90 #define LOOKUP_EXIST    (0)
  91 #define LOOKUP_OPEN     (1)
  92 #define LOOKUP_CLOSE    (2)
  93
  94 #define PCMMKMINOR(u, d, c) \
  95             ((((c) & 0xff) << 16) | (((u) & 0x0f) << 4) | ((d) & 0x0f))
  96 #define MIDIMKMINOR(u, d, c) PCMMKMINOR(u, d, c)
  97 #define MIDIUNIT(y) ((dev2unit(y) >> 4) & 0x0f)
  98 #define MIDIDEV(y) (dev2unit(y) & 0x0f)
  99
 100 /* These are the entries to the sequencer driver. */
 101 static d_open_t seq_open;
 102 static d_close_t seq_close;
 103 static d_ioctl_t seq_ioctl;
 104 static d_read_t seq_read;
 105 static d_write_t seq_write;
 106 static d_poll_t seq_poll;
 107
 108 static struct cdevsw seq_cdevsw = {
 109         .d_version = D_VERSION,
 110         .d_open = seq_open,
 111         .d_close = seq_close,
 112         .d_read = seq_read,
 113         .d_write = seq_write,
 114         .d_ioctl = seq_ioctl,
 115         .d_poll = seq_poll,
 116         .d_name = "sequencer",
 117 };
 118
 119 struct seq_softc {
 120         KOBJ_FIELDS;
 121
 122         struct mtx seq_lock, q_lock;
 123         struct cv empty_cv, reset_cv, in_cv, out_cv, state_cv, th_cv;
 124
 125         MIDIQ_HEAD(, u_char) in_q, out_q;
 126
 127         u_long  flags;
 128         /* Flags (protected by flag_mtx of mididev_info) */
 129         int     fflags;                 /* Access mode */
 130         int     music;
 131
 132         int     out_water;              /* Sequence output threshould */
 133         snd_sync_parm sync_parm;        /* AIOSYNC parameter set */
 134         struct thread *sync_thread;     /* AIOSYNCing thread */
 135         struct selinfo in_sel, out_sel;
 136         int     midi_number;
 137         struct cdev *seqdev, *musicdev;
 138         int     unit;
 139         int     maxunits;
 140         kobj_t *midis;
 141         int    *midi_flags;
 142         kobj_t  mapper;
 143         void   *mapper_cookie;
 144         struct timeval timerstop, timersub;
 145         int     timerbase, tempo;
 146         int     timerrun;
 147         int     done;
 148         int     playing;
 149         int     recording;
 150         int     busy;
 151         int     pre_event_timeout;
 152         int     waiting;
 153 };
 154
 155 /*
 156  * Module specific stuff, including how many sequecers
 157  * we currently own.
 158  */
 159
 160 SYSCTL_NODE(_hw_midi, OID_AUTO, seq, CTLFLAG_RD, 0, "Midi sequencer");
 161
 162 int                                     seq_debug;
 163 /* XXX: should this be moved into debug.midi? */
 164 SYSCTL_INT(_hw_midi_seq, OID_AUTO, debug, CTLFLAG_RW, &seq_debug, 0, "");
 165
 166 midi_cmdtab     cmdtab_seqevent[] = {
 167         {SEQ_NOTEOFF,           "SEQ_NOTEOFF"},
 168         {SEQ_NOTEON,            "SEQ_NOTEON"},
 169         {SEQ_WAIT,              "SEQ_WAIT"},
 170         {SEQ_PGMCHANGE,         "SEQ_PGMCHANGE"},
 171         {SEQ_SYNCTIMER,         "SEQ_SYNCTIMER"},
 172         {SEQ_MIDIPUTC,          "SEQ_MIDIPUTC"},
 173         {SEQ_DRUMON,            "SEQ_DRUMON"},
 174         {SEQ_DRUMOFF,           "SEQ_DRUMOFF"},
 175         {SEQ_ECHO,              "SEQ_ECHO"},
 176         {SEQ_AFTERTOUCH,        "SEQ_AFTERTOUCH"},
 177         {SEQ_CONTROLLER,        "SEQ_CONTROLLER"},
 178         {SEQ_BALANCE,           "SEQ_BALANCE"},
 179         {SEQ_VOLMODE,           "SEQ_VOLMODE"},
 180         {SEQ_FULLSIZE,          "SEQ_FULLSIZE"},
 181         {SEQ_PRIVATE,           "SEQ_PRIVATE"},
 182         {SEQ_EXTENDED,          "SEQ_EXTENDED"},
 183         {EV_SEQ_LOCAL,          "EV_SEQ_LOCAL"},
 184         {EV_TIMING,             "EV_TIMING"},
 185         {EV_CHN_COMMON,         "EV_CHN_COMMON"},
 186         {EV_CHN_VOICE,          "EV_CHN_VOICE"},
 187         {EV_SYSEX,              "EV_SYSEX"},
 188         {-1,                    NULL},
 189 };
 190
 191 midi_cmdtab     cmdtab_seqioctl[] = {
 192         {SNDCTL_SEQ_RESET,      "SNDCTL_SEQ_RESET"},
 193         {SNDCTL_SEQ_SYNC,       "SNDCTL_SEQ_SYNC"},
 194         {SNDCTL_SYNTH_INFO,     "SNDCTL_SYNTH_INFO"},
 195         {SNDCTL_SEQ_CTRLRATE,   "SNDCTL_SEQ_CTRLRATE"},
 196         {SNDCTL_SEQ_GETOUTCOUNT,        "SNDCTL_SEQ_GETOUTCOUNT"},
 197         {SNDCTL_SEQ_GETINCOUNT, "SNDCTL_SEQ_GETINCOUNT"},
 198         {SNDCTL_SEQ_PERCMODE,   "SNDCTL_SEQ_PERCMODE"},
 199         {SNDCTL_FM_LOAD_INSTR,  "SNDCTL_FM_LOAD_INSTR"},
 200         {SNDCTL_SEQ_TESTMIDI,   "SNDCTL_SEQ_TESTMIDI"},
 201         {SNDCTL_SEQ_RESETSAMPLES,       "SNDCTL_SEQ_RESETSAMPLES"},
 202         {SNDCTL_SEQ_NRSYNTHS,   "SNDCTL_SEQ_NRSYNTHS"},
 203         {SNDCTL_SEQ_NRMIDIS,    "SNDCTL_SEQ_NRMIDIS"},
 204         {SNDCTL_SEQ_GETTIME,    "SNDCTL_SEQ_GETTIME"},
 205         {SNDCTL_MIDI_INFO,      "SNDCTL_MIDI_INFO"},
 206         {SNDCTL_SEQ_THRESHOLD,  "SNDCTL_SEQ_THRESHOLD"},
 207         {SNDCTL_SYNTH_MEMAVL,   "SNDCTL_SYNTH_MEMAVL"},
 208         {SNDCTL_FM_4OP_ENABLE,  "SNDCTL_FM_4OP_ENABLE"},
 209         {SNDCTL_PMGR_ACCESS,    "SNDCTL_PMGR_ACCESS"},
 210         {SNDCTL_SEQ_PANIC,      "SNDCTL_SEQ_PANIC"},
 211         {SNDCTL_SEQ_OUTOFBAND,  "SNDCTL_SEQ_OUTOFBAND"},
 212         {SNDCTL_TMR_TIMEBASE,   "SNDCTL_TMR_TIMEBASE"},
 213         {SNDCTL_TMR_START,      "SNDCTL_TMR_START"},
 214         {SNDCTL_TMR_STOP,       "SNDCTL_TMR_STOP"},
 215         {SNDCTL_TMR_CONTINUE,   "SNDCTL_TMR_CONTINUE"},
 216         {SNDCTL_TMR_TEMPO,      "SNDCTL_TMR_TEMPO"},
 217         {SNDCTL_TMR_SOURCE,     "SNDCTL_TMR_SOURCE"},
 218         {SNDCTL_TMR_METRONOME,  "SNDCTL_TMR_METRONOME"},
 219         {SNDCTL_TMR_SELECT,     "SNDCTL_TMR_SELECT"},
 220         {SNDCTL_MIDI_PRETIME,   "SNDCTL_MIDI_PRETIME"},
 221         {AIONWRITE,             "AIONWRITE"},
 222         {AIOGSIZE,              "AIOGSIZE"},
 223         {AIOSSIZE,              "AIOSSIZE"},
 224         {AIOGFMT,               "AIOGFMT"},
 225         {AIOSFMT,               "AIOSFMT"},
 226         {AIOGMIX,               "AIOGMIX"},
 227         {AIOSMIX,               "AIOSMIX"},
 228         {AIOSTOP,               "AIOSTOP"},
 229         {AIOSYNC,               "AIOSYNC"},
 230         {AIOGCAP,               "AIOGCAP"},
 231         {-1,                    NULL},
 232 };
 233
 234 midi_cmdtab     cmdtab_timer[] = {
 235         {TMR_WAIT_REL,  "TMR_WAIT_REL"},
 236         {TMR_WAIT_ABS,  "TMR_WAIT_ABS"},
 237         {TMR_STOP,      "TMR_STOP"},
 238         {TMR_START,     "TMR_START"},
 239         {TMR_CONTINUE,  "TMR_CONTINUE"},
 240         {TMR_TEMPO,     "TMR_TEMPO"},
 241         {TMR_ECHO,      "TMR_ECHO"},
 242         {TMR_CLOCK,     "TMR_CLOCK"},
 243         {TMR_SPP,       "TMR_SPP"},
 244         {TMR_TIMESIG,   "TMR_TIMESIG"},
 245         {-1,            NULL},
 246 };
 247
 248 midi_cmdtab     cmdtab_seqcv[] = {
 249         {MIDI_NOTEOFF,          "MIDI_NOTEOFF"},
 250         {MIDI_NOTEON,           "MIDI_NOTEON"},
 251         {MIDI_KEY_PRESSURE,     "MIDI_KEY_PRESSURE"},
 252         {-1,                    NULL},
 253 };
 254
 255 midi_cmdtab     cmdtab_seqccmn[] = {
 256         {MIDI_CTL_CHANGE,       "MIDI_CTL_CHANGE"},
 257         {MIDI_PGM_CHANGE,       "MIDI_PGM_CHANGE"},
 258         {MIDI_CHN_PRESSURE,     "MIDI_CHN_PRESSURE"},
 259         {MIDI_PITCH_BEND,       "MIDI_PITCH_BEND"},
 260         {MIDI_SYSTEM_PREFIX,    "MIDI_SYSTEM_PREFIX"},
 261         {-1,                    NULL},
 262 };
 263
 264 #ifndef KOBJMETHOD_END
 265 #define KOBJMETHOD_END  { NULL, NULL }
 266 #endif
 267
 268 /*
 269  * static const char *mpu401_mprovider(kobj_t obj, struct mpu401 *m);
 270  */
 271
 272 static kobj_method_t seq_methods[] = {
 273         /* KOBJMETHOD(mpu_provider,mpu401_mprovider), */
 274         KOBJMETHOD_END
 275 };
 276
 277 DEFINE_CLASS(sequencer, seq_methods, 0);
 278
 279 /* The followings are the local function. */
 280 static int seq_convertold(u_char *event, u_char *out);
 281
 282 /*
 283  * static void seq_midiinput(struct seq_softc * scp, void *md);
 284  */
 285 static void seq_reset(struct seq_softc *scp);
 286 static int seq_sync(struct seq_softc *scp);
 287
 288 static int seq_processevent(struct seq_softc *scp, u_char *event);
 289
 290 static int seq_timing(struct seq_softc *scp, u_char *event);
 291 static int seq_local(struct seq_softc *scp, u_char *event);
 292
 293 static int seq_chnvoice(struct seq_softc *scp, kobj_t md, u_char *event);
 294 static int seq_chncommon(struct seq_softc *scp, kobj_t md, u_char *event);
 295 static int seq_sysex(struct seq_softc *scp, kobj_t md, u_char *event);
 296
 297 static int seq_fetch_mid(struct seq_softc *scp, int unit, kobj_t *md);
 298 void    seq_copytoinput(struct seq_softc *scp, u_char *event, int len);
 299 int     seq_modevent(module_t mod, int type, void *data);
 300 struct seq_softc *seqs[10];
 301 static struct mtx seqinfo_mtx;
 302 static u_long nseq = 0;
 303
 304 static void timer_start(struct seq_softc *t);
 305 static void timer_stop(struct seq_softc *t);
 306 static void timer_setvals(struct seq_softc *t, int tempo, int timerbase);
 307 static void timer_wait(struct seq_softc *t, int ticks, int wait_abs);
 308 static int timer_now(struct seq_softc *t);
 309
 310
 311 static void
 312 timer_start(struct seq_softc *t)
 313 {
 314         t->timerrun = 1;
 315         getmicrotime(&t->timersub);
 316 }
 317
 318 static void
 319 timer_continue(struct seq_softc *t)
 320 {
 321         struct timeval now;
 322
 323         if (t->timerrun == 1)
 324                 return;
 325         t->timerrun = 1;
 326         getmicrotime(&now);
 327         timevalsub(&now, &t->timerstop);
 328         timevaladd(&t->timersub, &now);
 329 }
 330
 331 static void
 332 timer_stop(struct seq_softc *t)
 333 {
 334         t->timerrun = 0;
 335         getmicrotime(&t->timerstop);
 336 }
 337
 338 static void
 339 timer_setvals(struct seq_softc *t, int tempo, int timerbase)
 340 {
 341         t->tempo = tempo;
 342         t->timerbase = timerbase;
 343 }
 344
 345 static void
 346 timer_wait(struct seq_softc *t, int ticks, int wait_abs)
 347 {
 348         struct timeval now, when;
 349         int ret;
 350         unsigned long long i;
 351
 352         while (t->timerrun == 0) {
 353                 SEQ_DEBUG(2, printf("Timer wait when timer isn't running\n"));
 354                 /*
 355                  * The old sequencer used timeouts that only increased
 356                  * the timer when the timer was running.
 357                  * Hence the sequencer would stick (?) if the
 358                  * timer was disabled.
 359                  */
 360                 cv_wait(&t->reset_cv, &t->seq_lock);
 361                 if (t->playing == 0)
 362                         return;
 363         }
 364
 365         i = ticks * 60ull * 1000000ull / (t->tempo * t->timerbase);
 366
 367         when.tv_sec = i / 1000000;
 368         when.tv_usec = i % 1000000;
 369
 370 #if 0
 371         printf("timer_wait tempo %d timerbase %d ticks %d abs %d u_sec %llu\n",
 372             t->tempo, t->timerbase, ticks, wait_abs, i);
 373 #endif
 374
 375         if (wait_abs != 0) {
 376                 getmicrotime(&now);
 377                 timevalsub(&now, &t->timersub);
 378                 timevalsub(&when, &now);
 379         }
 380         if (when.tv_sec < 0 || when.tv_usec < 0) {
 381                 SEQ_DEBUG(3,
 382                     printf("seq_timer error negative time %lds.%06lds\n",
 383                     (long)when.tv_sec, (long)when.tv_usec));
 384                 return;
 385         }
 386         i = when.tv_sec * 1000000ull;
 387         i += when.tv_usec;
 388         i *= hz;
 389         i /= 1000000ull;
 390 #if 0
 391         printf("seq_timer usec %llu ticks %llu\n",
 392             when.tv_sec * 1000000ull + when.tv_usec, i);
 393 #endif
 394         t->waiting = 1;
 395         ret = cv_timedwait(&t->reset_cv, &t->seq_lock, i + 1);
 396         t->waiting = 0;
 397
 398         if (ret != EWOULDBLOCK)
 399                 SEQ_DEBUG(3, printf("seq_timer didn't timeout\n"));
 400
 401 }
 402
 403 static int
 404 timer_now(struct seq_softc *t)
 405 {
 406         struct timeval now;
 407         unsigned long long i;
 408         int ret;
 409
 410         if (t->timerrun == 0)
 411                 now = t->timerstop;
 412         else
 413                 getmicrotime(&now);
 414
 415         timevalsub(&now, &t->timersub);
 416
 417         i = now.tv_sec * 1000000ull;
 418         i += now.tv_usec;
 419         i *= t->timerbase;
 420 /*      i /= t->tempo; */
 421         i /= 1000000ull;
 422
 423         ret = i;
 424         /*
 425          * printf("timer_now: %llu %d\n", i, ret);
 426          */
 427
 428         return ret;
 429 }
 430
 431 static void
 432 seq_eventthread(void *arg)
 433 {
 434         struct seq_softc *scp = arg;
 435         char event[EV_SZ];
 436
 437         mtx_lock(&scp->seq_lock);
 438         SEQ_DEBUG(2, printf("seq_eventthread started\n"));
 439         while (scp->done == 0) {
 440 restart:
 441                 while (scp->playing == 0) {
 442                         cv_wait(&scp->state_cv, &scp->seq_lock);
 443                         if (scp->done)
 444                                 goto done;
 445                 }
 446
 447                 while (MIDIQ_EMPTY(scp->out_q)) {
 448                         cv_broadcast(&scp->empty_cv);
 449                         cv_wait(&scp->out_cv, &scp->seq_lock);
 450                         if (scp->playing == 0)
 451                                 goto restart;
 452                         if (scp->done)
 453                                 goto done;
 454                 }
 455
 456                 MIDIQ_DEQ(scp->out_q, event, EV_SZ);
 457
 458                 if (MIDIQ_AVAIL(scp->out_q) < scp->out_water) {
 459                         cv_broadcast(&scp->out_cv);
 460                         selwakeup(&scp->out_sel);
 461                 }
 462                 seq_processevent(scp, event);
 463         }
 464
 465 done:
 466         cv_broadcast(&scp->th_cv);
 467         mtx_unlock(&scp->seq_lock);
 468         SEQ_DEBUG(2, printf("seq_eventthread finished\n"));
 469 #if __FreeBSD_version >= 800002
 470         kproc_exit(0);
 471 #else
 472         mtx_lock(&Giant);
 473         kthread_exit(0);
 474 #endif
 475 }
 476
 477 /*
 478  * seq_processevent:  This maybe called by the event thread or the IOCTL
 479  * handler for queued and out of band events respectively.
 480  */
 481 static int
 482 seq_processevent(struct seq_softc *scp, u_char *event)
 483 {
 484         int ret;
 485         kobj_t m;
 486
 487         ret = 0;
 488
 489         if (event[0] == EV_SEQ_LOCAL)
 490                 ret = seq_local(scp, event);
 491         else if (event[0] == EV_TIMING)
 492                 ret = seq_timing(scp, event);
 493         else if (event[0] != EV_CHN_VOICE &&
 494                     event[0] != EV_CHN_COMMON &&
 495                     event[0] != EV_SYSEX &&
 496             event[0] != SEQ_MIDIPUTC) {
 497                 ret = 1;
 498                 SEQ_DEBUG(2, printf("seq_processevent not known %d\n",
 499                     event[0]));
 500         } else if (seq_fetch_mid(scp, event[1], &m) != 0) {
 501                 ret = 1;
 502                 SEQ_DEBUG(2, printf("seq_processevent midi unit not found %d\n",
 503                     event[1]));
 504         } else
 505                 switch (event[0]) {
 506                 case EV_CHN_VOICE:
 507                         ret = seq_chnvoice(scp, m, event);
 508                         break;
 509                 case EV_CHN_COMMON:
 510                         ret = seq_chncommon(scp, m, event);
 511                         break;
 512                 case EV_SYSEX:
 513                         ret = seq_sysex(scp, m, event);
 514                         break;
 515                 case SEQ_MIDIPUTC:
 516                         mtx_unlock(&scp->seq_lock);
 517                         ret = SYNTH_WRITERAW(m, &event[2], 1);
 518                         mtx_lock(&scp->seq_lock);
 519                         break;
 520                 }
 521         return ret;
 522 }
 523
 524 static int
 525 seq_addunit(void)
 526 {
 527         struct seq_softc *scp;
 528         int ret;
 529         u_char *buf;
 530
 531         /* Allocate the softc. */
 532         ret = ENOMEM;
 533         scp = malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT | M_ZERO);
 534         if (scp == NULL) {
 535                 SEQ_DEBUG(1, printf("seq_addunit: softc allocation failed.\n"));
 536                 goto err;
 537         }
 538         kobj_init((kobj_t)scp, &sequencer_class);
 539
 540         buf = malloc(sizeof(*buf) * EV_SZ * 1024, M_TEMP, M_NOWAIT | M_ZERO);
 541         if (buf == NULL)
 542                 goto err;
 543         MIDIQ_INIT(scp->in_q, buf, EV_SZ * 1024);
 544         buf = malloc(sizeof(*buf) * EV_SZ * 1024, M_TEMP, M_NOWAIT | M_ZERO);
 545         if (buf == NULL)
 546                 goto err;
 547         MIDIQ_INIT(scp->out_q, buf, EV_SZ * 1024);
 548         ret = EINVAL;
 549
 550         scp->midis = malloc(sizeof(kobj_t) * 32, M_TEMP, M_NOWAIT | M_ZERO);
 551         scp->midi_flags = malloc(sizeof(*scp->midi_flags) * 32, M_TEMP,
 552             M_NOWAIT | M_ZERO);
 553
 554         if (scp->midis == NULL || scp->midi_flags == NULL)
 555                 goto err;
 556
 557         scp->flags = 0;
 558
 559         mtx_init(&scp->seq_lock, "seqflq", NULL, 0);
 560         cv_init(&scp->state_cv, "seqstate");
 561         cv_init(&scp->empty_cv, "seqempty");
 562         cv_init(&scp->reset_cv, "seqtimer");
 563         cv_init(&scp->out_cv, "seqqout");
 564         cv_init(&scp->in_cv, "seqqin");
 565         cv_init(&scp->th_cv, "seqstart");
 566
 567         /*
 568          * Init the damn timer
 569          */
 570
 571         scp->mapper = midimapper_addseq(scp, &scp->unit, &scp->mapper_cookie);
 572         if (scp->mapper == NULL)
 573                 goto err;
 574
 575         scp->seqdev = make_dev(&seq_cdevsw,
 576             MIDIMKMINOR(scp->unit, SND_DEV_SEQ, 0), UID_ROOT,
 577             GID_WHEEL, 0666, "sequencer%d", scp->unit);
 578
 579         scp->musicdev = make_dev(&seq_cdevsw,
 580             MIDIMKMINOR(scp->unit, SND_DEV_MUSIC, 0), UID_ROOT,
 581             GID_WHEEL, 0666, "music%d", scp->unit);
 582
 583         if (scp->seqdev == NULL || scp->musicdev == NULL)
 584                 goto err;
 585         /*
 586          * TODO: Add to list of sequencers this module provides
 587          */
 588
 589         ret =
 590 #if __FreeBSD_version >= 800002
 591             kproc_create
 592 #else
 593             kthread_create
 594 #endif
 595             (seq_eventthread, scp, NULL, RFHIGHPID, 0,
 596             "sequencer %02d", scp->unit);
 597
 598         if (ret)
 599                 goto err;
 600
 601         scp->seqdev->si_drv1 = scp->musicdev->si_drv1 = scp;
 602
 603         SEQ_DEBUG(2, printf("sequencer %d created scp %p\n", scp->unit, scp));
 604
 605         ret = 0;
 606
 607         mtx_lock(&seqinfo_mtx);
 608         seqs[nseq++] = scp;
 609         mtx_unlock(&seqinfo_mtx);
 610
 611         goto ok;
 612
 613 err:
 614         if (scp != NULL) {
 615                 if (scp->seqdev != NULL)
 616                         destroy_dev(scp->seqdev);
 617                 if (scp->musicdev != NULL)
 618                         destroy_dev(scp->musicdev);
 619                 /*
 620                  * TODO: Destroy mutex and cv
 621                  */
 622                 if (scp->midis != NULL)
 623                         free(scp->midis, M_TEMP);
 624                 if (scp->midi_flags != NULL)
 625                         free(scp->midi_flags, M_TEMP);
 626                 if (scp->out_q.b)
 627                         free(scp->out_q.b, M_TEMP);
 628                 if (scp->in_q.b)
 629                         free(scp->in_q.b, M_TEMP);
 630                 free(scp, M_DEVBUF);
 631         }
 632 ok:
 633         return ret;
 634 }
 635
 636 static int
 637 seq_delunit(int unit)
 638 {
 639         struct seq_softc *scp = seqs[unit];
 640         int i;
 641
 642         //SEQ_DEBUG(4, printf("seq_delunit: %d\n", unit));
 643         SEQ_DEBUG(1, printf("seq_delunit: 1 \n"));
 644         mtx_lock(&scp->seq_lock);
 645
 646         scp->playing = 0;
 647         scp->done = 1;
 648         cv_broadcast(&scp->out_cv);
 649         cv_broadcast(&scp->state_cv);
 650         cv_broadcast(&scp->reset_cv);
 651         SEQ_DEBUG(1, printf("seq_delunit: 2 \n"));
 652         cv_wait(&scp->th_cv, &scp->seq_lock);
 653         SEQ_DEBUG(1, printf("seq_delunit: 3.0 \n"));
 654         mtx_unlock(&scp->seq_lock);
 655         SEQ_DEBUG(1, printf("seq_delunit: 3.1 \n"));
 656
 657         cv_destroy(&scp->state_cv);
 658         SEQ_DEBUG(1, printf("seq_delunit: 4 \n"));
 659         cv_destroy(&scp->empty_cv);
 660         SEQ_DEBUG(1, printf("seq_delunit: 5 \n"));
 661         cv_destroy(&scp->reset_cv);
 662         SEQ_DEBUG(1, printf("seq_delunit: 6 \n"));
 663         cv_destroy(&scp->out_cv);
 664         SEQ_DEBUG(1, printf("seq_delunit: 7 \n"));
 665         cv_destroy(&scp->in_cv);
 666         SEQ_DEBUG(1, printf("seq_delunit: 8 \n"));
 667         cv_destroy(&scp->th_cv);
 668
 669         SEQ_DEBUG(1, printf("seq_delunit: 10 \n"));
 670         if (scp->seqdev)
 671                 destroy_dev(scp->seqdev);
 672         SEQ_DEBUG(1, printf("seq_delunit: 11 \n"));
 673         if (scp->musicdev)
 674                 destroy_dev(scp->musicdev);
 675         SEQ_DEBUG(1, printf("seq_delunit: 12 \n"));
 676         scp->seqdev = scp->musicdev = NULL;
 677         if (scp->midis != NULL)
 678                 free(scp->midis, M_TEMP);
 679         SEQ_DEBUG(1, printf("seq_delunit: 13 \n"));
 680         if (scp->midi_flags != NULL)
 681                 free(scp->midi_flags, M_TEMP);
 682         SEQ_DEBUG(1, printf("seq_delunit: 14 \n"));
 683         free(scp->out_q.b, M_TEMP);
 684         SEQ_DEBUG(1, printf("seq_delunit: 15 \n"));
 685         free(scp->in_q.b, M_TEMP);
 686
 687         SEQ_DEBUG(1, printf("seq_delunit: 16 \n"));
 688
 689         mtx_destroy(&scp->seq_lock);
 690         SEQ_DEBUG(1, printf("seq_delunit: 17 \n"));
 691         free(scp, M_DEVBUF);
 692
 693         mtx_lock(&seqinfo_mtx);
 694         for (i = unit; i < (nseq - 1); i++)
 695                 seqs[i] = seqs[i + 1];
 696         nseq--;
 697         mtx_unlock(&seqinfo_mtx);
 698
 699         return 0;
 700 }
 701
 702 int
 703 seq_modevent(module_t mod, int type, void *data)
 704 {
 705         int retval, r;
 706
 707         retval = 0;
 708
 709         switch (type) {
 710         case MOD_LOAD:
 711                 mtx_init(&seqinfo_mtx, "seqmod", NULL, 0);
 712                 retval = seq_addunit();
 713                 break;
 714
 715         case MOD_UNLOAD:
 716                 while (nseq) {
 717                         r = seq_delunit(nseq - 1);
 718                         if (r) {
 719                                 retval = r;
 720                                 break;
 721                         }
 722                 }
 723                 if (nseq == 0) {
 724                         retval = 0;
 725                         mtx_destroy(&seqinfo_mtx);
 726                 }
 727                 break;
 728
 729         default:
 730                 break;
 731         }
 732
 733         return retval;
 734 }
 735
 736 static int
 737 seq_fetch_mid(struct seq_softc *scp, int unit, kobj_t *md)
 738 {
 739
 740         if (unit > scp->midi_number || unit < 0)
 741                 return EINVAL;
 742
 743         *md = scp->midis[unit];
 744
 745         return 0;
 746 }
 747
 748 int
 749 seq_open(struct cdev *i_dev, int flags, int mode, struct thread *td)
 750 {
 751         struct seq_softc *scp = i_dev->si_drv1;
 752         int i;
 753
 754         if (scp == NULL)
 755                 return ENXIO;
 756
 757         SEQ_DEBUG(3, printf("seq_open: scp %p unit %d, flags 0x%x.\n",
 758             scp, scp->unit, flags));
 759
 760         /*
 761          * Mark this device busy.
 762          */
 763
 764         mtx_lock(&scp->seq_lock);
 765         if (scp->busy) {
 766                 mtx_unlock(&scp->seq_lock);
 767                 SEQ_DEBUG(2, printf("seq_open: unit %d is busy.\n", scp->unit));
 768                 return EBUSY;
 769         }
 770         scp->fflags = flags;
 771         /*
 772         if ((scp->fflags & O_NONBLOCK) != 0)
 773                 scp->flags |= SEQ_F_NBIO;
 774                 */
 775         scp->music = MIDIDEV(i_dev) == SND_DEV_MUSIC;
 776
 777         /*
 778          * Enumerate the available midi devices
 779          */
 780         scp->midi_number = 0;
 781         scp->maxunits = midimapper_open(scp->mapper, &scp->mapper_cookie);
 782
 783         if (scp->maxunits == 0)
 784                 SEQ_DEBUG(2, printf("seq_open: no midi devices\n"));
 785
 786         for (i = 0; i < scp->maxunits; i++) {
 787                 scp->midis[scp->midi_number] =
 788                     midimapper_fetch_synth(scp->mapper, scp->mapper_cookie, i);
 789                 if (scp->midis[scp->midi_number]) {
 790                         if (SYNTH_OPEN(scp->midis[scp->midi_number], scp,
 791                                 scp->fflags) != 0)
 792                                 scp->midis[scp->midi_number] = NULL;
 793                         else {
 794                                 scp->midi_flags[scp->midi_number] =
 795                                     SYNTH_QUERY(scp->midis[scp->midi_number]);
 796                                 scp->midi_number++;
 797                         }
 798                 }
 799         }
 800
 801         timer_setvals(scp, 60, 100);
 802
 803         timer_start(scp);
 804         timer_stop(scp);
 805         /*
 806          * actually, if we're in rdonly mode, we should start the timer
 807          */
 808         /*
 809          * TODO: Handle recording now
 810          */
 811
 812         scp->out_water = MIDIQ_SIZE(scp->out_q) / 2;
 813
 814         scp->busy = 1;
 815         mtx_unlock(&scp->seq_lock);
 816
 817         SEQ_DEBUG(2, printf("seq_open: opened, mode %s.\n",
 818             scp->music ? "music" : "sequencer"));
 819         SEQ_DEBUG(2,
 820             printf("Sequencer %d %p opened maxunits %d midi_number %d:\n",
 821                 scp->unit, scp, scp->maxunits, scp->midi_number));
 822         for (i = 0; i < scp->midi_number; i++)
 823                 SEQ_DEBUG(3, printf("  midi %d %p\n", i, scp->midis[i]));
 824
 825         return 0;
 826 }
 827
 828 /*
 829  * seq_close
 830  */
 831 int
 832 seq_close(struct cdev *i_dev, int flags, int mode, struct thread *td)
 833 {
 834         int i;
 835         struct seq_softc *scp = i_dev->si_drv1;
 836         int ret;
 837
 838         if (scp == NULL)
 839                 return ENXIO;
 840
 841         SEQ_DEBUG(2, printf("seq_close: unit %d.\n", scp->unit));
 842
 843         mtx_lock(&scp->seq_lock);
 844
 845         ret = ENXIO;
 846         if (scp->busy == 0)
 847                 goto err;
 848
 849         seq_reset(scp);
 850         seq_sync(scp);
 851
 852         for (i = 0; i < scp->midi_number; i++)
 853                 if (scp->midis[i])
 854                         SYNTH_CLOSE(scp->midis[i]);
 855
 856         midimapper_close(scp->mapper, scp->mapper_cookie);
 857
 858         timer_stop(scp);
 859
 860         scp->busy = 0;
 861         ret = 0;
 862
 863 err:
 864         SEQ_DEBUG(3, printf("seq_close: closed ret = %d.\n", ret));
 865         mtx_unlock(&scp->seq_lock);
 866         return ret;
 867 }
 868
 869 int
 870 seq_read(struct cdev *i_dev, struct uio *uio, int ioflag)
 871 {
 872         int retval, used;
 873         struct seq_softc *scp = i_dev->si_drv1;
 874
 875 #define SEQ_RSIZE 32
 876         u_char buf[SEQ_RSIZE];
 877
 878         if (scp == NULL)
 879                 return ENXIO;
 880
 881         SEQ_DEBUG(7, printf("seq_read: unit %d, resid %zd.\n",
 882             scp->unit, uio->uio_resid));
 883
 884         mtx_lock(&scp->seq_lock);
 885         if ((scp->fflags & FREAD) == 0) {
 886                 SEQ_DEBUG(2, printf("seq_read: unit %d is not for reading.\n",
 887                     scp->unit));
 888                 retval = EIO;
 889                 goto err1;
 890         }
 891         /*
 892          * Begin recording.
 893          */
 894         /*
 895          * if ((scp->flags & SEQ_F_READING) == 0)
 896          */
 897         /*
 898          * TODO, start recording if not alread
 899          */
 900
 901         /*
 902          * I think the semantics are to return as soon
 903          * as possible.
 904          * Second thought, it doens't seem like midimoutain
 905          * expects that at all.
 906          * TODO: Look up in some sort of spec
 907          */
 908
 909         while (uio->uio_resid > 0) {
 910                 while (MIDIQ_EMPTY(scp->in_q)) {
 911                         retval = EWOULDBLOCK;
 912                         /*
 913                          * I wish I knew which one to care about
 914                          */
 915
 916                         if (scp->fflags & O_NONBLOCK)
 917                                 goto err1;
 918                         if (ioflag & O_NONBLOCK)
 919                                 goto err1;
 920
 921                         retval = cv_wait_sig(&scp->in_cv, &scp->seq_lock);
 922                         if (retval == EINTR)
 923                                 goto err1;
 924                 }
 925
 926                 used = MIN(MIDIQ_LEN(scp->in_q), uio->uio_resid);
 927                 used = MIN(used, SEQ_RSIZE);
 928
 929                 SEQ_DEBUG(8, printf("midiread: uiomove cc=%d\n", used));
 930                 MIDIQ_DEQ(scp->in_q, buf, used);
 931                 retval = uiomove(buf, used, uio);
 932                 if (retval)
 933                         goto err1;
 934         }
 935
 936         retval = 0;
 937 err1:
 938         mtx_unlock(&scp->seq_lock);
 939         SEQ_DEBUG(6, printf("seq_read: ret %d, resid %zd.\n",
 940             retval, uio->uio_resid));
 941
 942         return retval;
 943 }
 944
 945 int
 946 seq_write(struct cdev *i_dev, struct uio *uio, int ioflag)
 947 {
 948         u_char event[EV_SZ], newevent[EV_SZ], ev_code;
 949         struct seq_softc *scp = i_dev->si_drv1;
 950         int retval;
 951         int used;
 952
 953         SEQ_DEBUG(7, printf("seq_write: unit %d, resid %zd.\n",
 954             scp->unit, uio->uio_resid));
 955
 956         if (scp == NULL)
 957                 return ENXIO;
 958
 959         mtx_lock(&scp->seq_lock);
 960
 961         if ((scp->fflags & FWRITE) == 0) {
 962                 SEQ_DEBUG(2, printf("seq_write: unit %d is not for writing.\n",
 963                     scp->unit));
 964                 retval = EIO;
 965                 goto err0;
 966         }
 967         while (uio->uio_resid > 0) {
 968                 while (MIDIQ_AVAIL(scp->out_q) == 0) {
 969                         retval = EWOULDBLOCK;
 970                         if (scp->fflags & O_NONBLOCK)
 971                                 goto err0;
 972                         if (ioflag & O_NONBLOCK)
 973                                 goto err0;
 974                         SEQ_DEBUG(8, printf("seq_write cvwait\n"));
 975
 976                         scp->playing = 1;
 977                         cv_broadcast(&scp->out_cv);
 978                         cv_broadcast(&scp->state_cv);
 979
 980                         retval = cv_wait_sig(&scp->out_cv, &scp->seq_lock);
 981                         /*
 982                          * We slept, maybe things have changed since last
 983                          * dying check
 984                          */
 985                         if (retval == EINTR)
 986                                 goto err0;
 987 #if 0
 988                         /*
 989                          * Useless test
 990                          */
 991                         if (scp != i_dev->si_drv1)
 992                                 retval = ENXIO;
 993 #endif
 994                 }
 995
 996                 used = MIN(uio->uio_resid, 4);
 997
 998                 SEQ_DEBUG(8, printf("seqout: resid %zd len %jd avail %jd\n",
 999                     uio->uio_resid, (intmax_t)MIDIQ_LEN(scp->out_q),
1000                     (intmax_t)MIDIQ_AVAIL(scp->out_q)));
1001
1002                 if (used != 4) {
1003                         retval = ENXIO;
1004                         goto err0;
1005                 }
1006                 retval = uiomove(event, used, uio);
1007                 if (retval)
1008                         goto err0;
1009
1010                 ev_code = event[0];
1011                 SEQ_DEBUG(8, printf("seq_write: unit %d, event %s.\n",
1012                     scp->unit, midi_cmdname(ev_code, cmdtab_seqevent)));
1013
1014                 /* Have a look at the event code. */
1015                 if (ev_code == SEQ_FULLSIZE) {
1016
1017                         /*
1018                          * TODO: restore code for SEQ_FULLSIZE
1019                          */
1020 #if 0
1021                         /*
1022                          * A long event, these are the patches/samples for a
1023                          * synthesizer.
1024                          */
1025                         midiunit = *(u_short *)&event[2];
1026                         mtx_lock(&sd->seq_lock);
1027                         ret = lookup_mididev(scp, midiunit, LOOKUP_OPEN, &md);
1028                         mtx_unlock(&sd->seq_lock);
1029                         if (ret != 0)
1030                                 return (ret);
1031
1032                         SEQ_DEBUG(printf("seq_write: loading a patch to the unit %d.\n", midiunit));
1033
1034                         ret = md->synth.loadpatch(md, *(short *)&event[0], buf,
1035                             p + 4, count, 0);
1036                         return (ret);
1037 #else
1038                         /*
1039                          * For now, just flush the darn buffer
1040                          */
1041                         SEQ_DEBUG(2,
1042                            printf("seq_write: SEQ_FULLSIZE flusing buffer.\n"));
1043                         while (uio->uio_resid > 0) {
1044                                 retval = uiomove(event, EV_SZ, uio);
1045                                 if (retval)
1046                                         goto err0;
1047
1048                         }
1049                         retval = 0;
1050                         goto err0;
1051 #endif
1052                 }
1053                 retval = EINVAL;
1054                 if (ev_code >= 128) {
1055
1056                         /*
1057                          * Some sort of an extended event. The size is eight
1058                          * bytes. scoop extra info.
1059                          */
1060                         if (scp->music && ev_code == SEQ_EXTENDED) {
1061                                 SEQ_DEBUG(2, printf("seq_write: invalid level two event %x.\n", ev_code));
1062                                 goto err0;
1063                         }
1064                         if (uiomove((caddr_t)&event[4], 4, uio)) {
1065                                 SEQ_DEBUG(2,
1066                                    printf("seq_write: user memory mangled?\n"));
1067                                 goto err0;
1068                         }
1069                 } else {
1070                         /*
1071                          * Size four event.
1072                          */
1073                         if (scp->music) {
1074                                 SEQ_DEBUG(2, printf("seq_write: four byte event in music mode.\n"));
1075                                 goto err0;
1076                         }
1077                 }
1078                 if (ev_code == SEQ_MIDIPUTC) {
1079                         /*
1080                          * TODO: event[2] is unit number to receive char.
1081                          * Range check it.
1082                          */
1083                 }
1084                 if (scp->music) {
1085 #ifdef not_ever_ever
1086                         if (event[0] == EV_TIMING &&
1087                             (event[1] == TMR_START || event[1] == TMR_STOP)) {
1088                                 /*
1089                                  * For now, try to make midimoutain work by
1090                                  * forcing these events to be processed
1091                                  * immediatly.
1092                                  */
1093                                 seq_processevent(scp, event);
1094                         } else
1095                                 MIDIQ_ENQ(scp->out_q, event, EV_SZ);
1096 #else
1097                         MIDIQ_ENQ(scp->out_q, event, EV_SZ);
1098 #endif
1099                 } else {
1100                         if (seq_convertold(event, newevent) > 0)
1101                                 MIDIQ_ENQ(scp->out_q, newevent, EV_SZ);
1102 #if 0
1103                         else
1104                                 goto err0;
1105 #endif
1106                 }
1107
1108         }
1109
1110         scp->playing = 1;
1111         cv_broadcast(&scp->state_cv);
1112         cv_broadcast(&scp->out_cv);
1113
1114         retval = 0;
1115
1116 err0:
1117         SEQ_DEBUG(6,
1118             printf("seq_write done: leftover buffer length %zd retval %d\n",
1119             uio->uio_resid, retval));
1120         mtx_unlock(&scp->seq_lock);
1121         return retval;
1122 }
1123
1124 int
1125 seq_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode,
1126     struct thread *td)
1127 {
1128         int midiunit, ret, tmp;
1129         struct seq_softc *scp = i_dev->si_drv1;
1130         struct synth_info *synthinfo;
1131         struct midi_info *midiinfo;
1132         u_char event[EV_SZ];
1133         u_char newevent[EV_SZ];
1134
1135         kobj_t md;
1136
1137         /*
1138          * struct snd_size *sndsize;
1139          */
1140
1141         if (scp == NULL)
1142                 return ENXIO;
1143
1144         SEQ_DEBUG(6, printf("seq_ioctl: unit %d, cmd %s.\n",
1145             scp->unit, midi_cmdname(cmd, cmdtab_seqioctl)));
1146
1147         ret = 0;
1148
1149         switch (cmd) {
1150         case SNDCTL_SEQ_GETTIME:
1151                 /*
1152                  * ioctl needed by libtse
1153                  */
1154                 mtx_lock(&scp->seq_lock);
1155                 *(int *)arg = timer_now(scp);
1156                 mtx_unlock(&scp->seq_lock);
1157                 SEQ_DEBUG(6, printf("seq_ioctl: gettime %d.\n", *(int *)arg));
1158                 ret = 0;
1159                 break;
1160         case SNDCTL_TMR_METRONOME:
1161                 /* fallthrough */
1162         case SNDCTL_TMR_SOURCE:
1163                 /*
1164                  * Not implemented
1165                  */
1166                 ret = 0;
1167                 break;
1168         case SNDCTL_TMR_TEMPO:
1169                 event[1] = TMR_TEMPO;
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_TIMEBASE:
1176                 event[1] = TMR_TIMERBASE;
1177                 event[4] = *(int *)arg & 0xFF;
1178                 event[5] = (*(int *)arg >> 8) & 0xFF;
1179                 event[6] = (*(int *)arg >> 16) & 0xFF;
1180                 event[7] = (*(int *)arg >> 24) & 0xFF;
1181                 goto timerevent;
1182         case SNDCTL_TMR_START:
1183                 event[1] = TMR_START;
1184                 goto timerevent;
1185         case SNDCTL_TMR_STOP:
1186                 event[1] = TMR_STOP;
1187                 goto timerevent;
1188         case SNDCTL_TMR_CONTINUE:
1189                 event[1] = TMR_CONTINUE;
1190 timerevent:
1191                 event[0] = EV_TIMING;
1192                 mtx_lock(&scp->seq_lock);
1193                 if (!scp->music) {
1194                         ret = EINVAL;
1195                         mtx_unlock(&scp->seq_lock);
1196                         break;
1197                 }
1198                 seq_processevent(scp, event);
1199                 mtx_unlock(&scp->seq_lock);
1200                 break;
1201         case SNDCTL_TMR_SELECT:
1202                 SEQ_DEBUG(2,
1203                     printf("seq_ioctl: SNDCTL_TMR_SELECT not supported\n"));
1204                 ret = EINVAL;
1205                 break;
1206         case SNDCTL_SEQ_SYNC:
1207                 if (mode == O_RDONLY) {
1208                         ret = 0;
1209                         break;
1210                 }
1211                 mtx_lock(&scp->seq_lock);
1212                 ret = seq_sync(scp);
1213                 mtx_unlock(&scp->seq_lock);
1214                 break;
1215         case SNDCTL_SEQ_PANIC:
1216                 /* fallthrough */
1217         case SNDCTL_SEQ_RESET:
1218                 /*
1219                  * SNDCTL_SEQ_PANIC == SNDCTL_SEQ_RESET
1220                  */
1221                 mtx_lock(&scp->seq_lock);
1222                 seq_reset(scp);
1223                 mtx_unlock(&scp->seq_lock);
1224                 ret = 0;
1225                 break;
1226         case SNDCTL_SEQ_TESTMIDI:
1227                 mtx_lock(&scp->seq_lock);
1228                 /*
1229                  * TODO: SNDCTL_SEQ_TESTMIDI now means "can I write to the
1230                  * device?".
1231                  */
1232                 mtx_unlock(&scp->seq_lock);
1233                 break;
1234 #if 0
1235         case SNDCTL_SEQ_GETINCOUNT:
1236                 if (mode == O_WRONLY)
1237                         *(int *)arg = 0;
1238                 else {
1239                         mtx_lock(&scp->seq_lock);
1240                         *(int *)arg = scp->in_q.rl;
1241                         mtx_unlock(&scp->seq_lock);
1242                         SEQ_DEBUG(printf("seq_ioctl: incount %d.\n",
1243                             *(int *)arg));
1244                 }
1245                 ret = 0;
1246                 break;
1247         case SNDCTL_SEQ_GETOUTCOUNT:
1248                 if (mode == O_RDONLY)
1249                         *(int *)arg = 0;
1250                 else {
1251                         mtx_lock(&scp->seq_lock);
1252                         *(int *)arg = scp->out_q.fl;
1253                         mtx_unlock(&scp->seq_lock);
1254                         SEQ_DEBUG(printf("seq_ioctl: outcount %d.\n",
1255                             *(int *)arg));
1256                 }
1257                 ret = 0;
1258                 break;
1259 #endif
1260         case SNDCTL_SEQ_CTRLRATE:
1261                 if (*(int *)arg != 0) {
1262                         ret = EINVAL;
1263                         break;
1264                 }
1265                 mtx_lock(&scp->seq_lock);
1266                 *(int *)arg = scp->timerbase;
1267                 mtx_unlock(&scp->seq_lock);
1268                 SEQ_DEBUG(3, printf("seq_ioctl: ctrlrate %d.\n", *(int *)arg));
1269                 ret = 0;
1270                 break;
1271                 /*
1272                  * TODO: ioctl SNDCTL_SEQ_RESETSAMPLES
1273                  */
1274 #if 0
1275         case SNDCTL_SEQ_RESETSAMPLES:
1276                 mtx_lock(&scp->seq_lock);
1277                 ret = lookup_mididev(scp, *(int *)arg, LOOKUP_OPEN, &md);
1278                 mtx_unlock(&scp->seq_lock);
1279                 if (ret != 0)
1280                         break;
1281                 ret = midi_ioctl(MIDIMKDEV(major(i_dev), *(int *)arg,
1282                     SND_DEV_MIDIN), cmd, arg, mode, td);
1283                 break;
1284 #endif
1285         case SNDCTL_SEQ_NRSYNTHS:
1286                 mtx_lock(&scp->seq_lock);
1287                 *(int *)arg = scp->midi_number;
1288                 mtx_unlock(&scp->seq_lock);
1289                 SEQ_DEBUG(3, printf("seq_ioctl: synths %d.\n", *(int *)arg));
1290                 ret = 0;
1291                 break;
1292         case SNDCTL_SEQ_NRMIDIS:
1293                 mtx_lock(&scp->seq_lock);
1294                 if (scp->music)
1295                         *(int *)arg = 0;
1296                 else {
1297                         /*
1298                          * TODO: count the numbder of devices that can WRITERAW
1299                          */
1300                         *(int *)arg = scp->midi_number;
1301                 }
1302                 mtx_unlock(&scp->seq_lock);
1303                 SEQ_DEBUG(3, printf("seq_ioctl: midis %d.\n", *(int *)arg));
1304                 ret = 0;
1305                 break;
1306                 /*
1307                  * TODO: ioctl SNDCTL_SYNTH_MEMAVL
1308                  */
1309 #if 0
1310         case SNDCTL_SYNTH_MEMAVL:
1311                 mtx_lock(&scp->seq_lock);
1312                 ret = lookup_mididev(scp, *(int *)arg, LOOKUP_OPEN, &md);
1313                 mtx_unlock(&scp->seq_lock);
1314                 if (ret != 0)
1315                         break;
1316                 ret = midi_ioctl(MIDIMKDEV(major(i_dev), *(int *)arg,
1317                     SND_DEV_MIDIN), cmd, arg, mode, td);
1318                 break;
1319 #endif
1320         case SNDCTL_SEQ_OUTOFBAND:
1321                 for (ret = 0; ret < EV_SZ; ret++)
1322                         event[ret] = (u_char)arg[0];
1323
1324                 mtx_lock(&scp->seq_lock);
1325                 if (scp->music)
1326                         ret = seq_processevent(scp, event);
1327                 else {
1328                         if (seq_convertold(event, newevent) > 0)
1329                                 ret = seq_processevent(scp, newevent);
1330                         else
1331                                 ret = EINVAL;
1332                 }
1333                 mtx_unlock(&scp->seq_lock);
1334                 break;
1335         case SNDCTL_SYNTH_INFO:
1336                 synthinfo = (struct synth_info *)arg;
1337                 midiunit = synthinfo->device;
1338                 mtx_lock(&scp->seq_lock);
1339                 if (seq_fetch_mid(scp, midiunit, &md) == 0) {
1340                         bzero(synthinfo, sizeof(*synthinfo));
1341                         synthinfo->name[0] = 'f';
1342                         synthinfo->name[1] = 'a';
1343                         synthinfo->name[2] = 'k';
1344                         synthinfo->name[3] = 'e';
1345                         synthinfo->name[4] = 's';
1346                         synthinfo->name[5] = 'y';
1347                         synthinfo->name[6] = 'n';
1348                         synthinfo->name[7] = 't';
1349                         synthinfo->name[8] = 'h';
1350                         synthinfo->device = midiunit;
1351                         synthinfo->synth_type = SYNTH_TYPE_MIDI;
1352                         synthinfo->capabilities = scp->midi_flags[midiunit];
1353                         ret = 0;
1354                 } else
1355                         ret = EINVAL;
1356                 mtx_unlock(&scp->seq_lock);
1357                 break;
1358         case SNDCTL_MIDI_INFO:
1359                 midiinfo = (struct midi_info *)arg;
1360                 midiunit = midiinfo->device;
1361                 mtx_lock(&scp->seq_lock);
1362                 if (seq_fetch_mid(scp, midiunit, &md) == 0) {
1363                         bzero(midiinfo, sizeof(*midiinfo));
1364                         midiinfo->name[0] = 'f';
1365                         midiinfo->name[1] = 'a';
1366                         midiinfo->name[2] = 'k';
1367                         midiinfo->name[3] = 'e';
1368                         midiinfo->name[4] = 'm';
1369                         midiinfo->name[5] = 'i';
1370                         midiinfo->name[6] = 'd';
1371                         midiinfo->name[7] = 'i';
1372                         midiinfo->device = midiunit;
1373                         midiinfo->capabilities = scp->midi_flags[midiunit];
1374                         /*
1375                          * TODO: What devtype?
1376                          */
1377                         midiinfo->dev_type = 0x01;
1378                         ret = 0;
1379                 } else
1380                         ret = EINVAL;
1381                 mtx_unlock(&scp->seq_lock);
1382                 break;
1383         case SNDCTL_SEQ_THRESHOLD:
1384                 mtx_lock(&scp->seq_lock);
1385                 RANGE(*(int *)arg, 1, MIDIQ_SIZE(scp->out_q) - 1);
1386                 scp->out_water = *(int *)arg;
1387                 mtx_unlock(&scp->seq_lock);
1388                 SEQ_DEBUG(3, printf("seq_ioctl: water %d.\n", *(int *)arg));
1389                 ret = 0;
1390                 break;
1391         case SNDCTL_MIDI_PRETIME:
1392                 tmp = *(int *)arg;
1393                 if (tmp < 0)
1394                         tmp = 0;
1395                 mtx_lock(&scp->seq_lock);
1396                 scp->pre_event_timeout = (hz * tmp) / 10;
1397                 *(int *)arg = scp->pre_event_timeout;
1398                 mtx_unlock(&scp->seq_lock);
1399                 SEQ_DEBUG(3, printf("seq_ioctl: pretime %d.\n", *(int *)arg));
1400                 ret = 0;
1401                 break;
1402         case SNDCTL_FM_4OP_ENABLE:
1403         case SNDCTL_PMGR_IFACE:
1404         case SNDCTL_PMGR_ACCESS:
1405                 /*
1406                  * Patch manager and fm are ded, ded, ded.
1407                  */
1408                 /* fallthrough */
1409         default:
1410                 /*
1411                  * TODO: Consider ioctl default case.
1412                  * Old code used to
1413                  * if ((scp->fflags & O_ACCMODE) == FREAD) {
1414                  *      ret = EIO;
1415                  *      break;
1416                  * }
1417                  * Then pass on the ioctl to device 0
1418                  */
1419                 SEQ_DEBUG(2,
1420                     printf("seq_ioctl: unsupported IOCTL %ld.\n", cmd));
1421                 ret = EINVAL;
1422                 break;
1423         }
1424
1425         return ret;
1426 }
1427
1428 int
1429 seq_poll(struct cdev *i_dev, int events, struct thread *td)
1430 {
1431         int ret, lim;
1432         struct seq_softc *scp = i_dev->si_drv1;
1433
1434         SEQ_DEBUG(3, printf("seq_poll: unit %d.\n", scp->unit));
1435         SEQ_DEBUG(1, printf("seq_poll: unit %d.\n", scp->unit));
1436
1437         mtx_lock(&scp->seq_lock);
1438
1439         ret = 0;
1440
1441         /* Look up the apropriate queue and select it. */
1442         if ((events & (POLLOUT | POLLWRNORM)) != 0) {
1443                 /* Start playing. */
1444                 scp->playing = 1;
1445                 cv_broadcast(&scp->state_cv);
1446                 cv_broadcast(&scp->out_cv);
1447
1448                 lim = scp->out_water;
1449
1450                 if (MIDIQ_AVAIL(scp->out_q) < lim)
1451                         /* No enough space, record select. */
1452                         selrecord(td, &scp->out_sel);
1453                 else
1454                         /* We can write now. */
1455                         ret |= events & (POLLOUT | POLLWRNORM);
1456         }
1457         if ((events & (POLLIN | POLLRDNORM)) != 0) {
1458                 /* TODO: Start recording. */
1459
1460                 /* Find out the boundary. */
1461                 lim = 1;
1462                 if (MIDIQ_LEN(scp->in_q) < lim)
1463                         /* No data ready, record select. */
1464                         selrecord(td, &scp->in_sel);
1465                 else
1466                         /* We can read now. */
1467                         ret |= events & (POLLIN | POLLRDNORM);
1468         }
1469         mtx_unlock(&scp->seq_lock);
1470
1471         return (ret);
1472 }
1473
1474 #if 0
1475 static void
1476 sein_qtr(void *p, void /* mididev_info */ *md)
1477 {
1478         struct seq_softc *scp;
1479
1480         scp = (struct seq_softc *)p;
1481
1482         mtx_lock(&scp->seq_lock);
1483
1484         /* Restart playing if we have the data to output. */
1485         if (scp->queueout_pending)
1486                 seq_callback(scp, SEQ_CB_START | SEQ_CB_WR);
1487         /* Check the midi device if we are reading. */
1488         if ((scp->flags & SEQ_F_READING) != 0)
1489                 seq_midiinput(scp, md);
1490
1491         mtx_unlock(&scp->seq_lock);
1492 }
1493
1494 #endif
1495 /*
1496  * seq_convertold
1497  * Was the old playevent.  Use this to convert and old
1498  * style /dev/sequencer event to a /dev/music event
1499  */
1500 static int
1501 seq_convertold(u_char *event, u_char *out)
1502 {
1503         int used;
1504         u_char dev, chn, note, vel;
1505
1506         out[0] = out[1] = out[2] = out[3] = out[4] = out[5] = out[6] =
1507             out[7] = 0;
1508
1509         dev = 0;
1510         chn = event[1];
1511         note = event[2];
1512         vel = event[3];
1513
1514         used = 0;
1515
1516 restart:
1517         /*
1518          * TODO: Debug statement
1519          */
1520         switch (event[0]) {
1521         case EV_TIMING:
1522         case EV_CHN_VOICE:
1523         case EV_CHN_COMMON:
1524         case EV_SYSEX:
1525         case EV_SEQ_LOCAL:
1526                 out[0] = event[0];
1527                 out[1] = event[1];
1528                 out[2] = event[2];
1529                 out[3] = event[3];
1530                 out[4] = event[4];
1531                 out[5] = event[5];
1532                 out[6] = event[6];
1533                 out[7] = event[7];
1534                 used += 8;
1535                 break;
1536         case SEQ_NOTEOFF:
1537                 out[0] = EV_CHN_VOICE;
1538                 out[1] = dev;
1539                 out[2] = MIDI_NOTEOFF;
1540                 out[3] = chn;
1541                 out[4] = note;
1542                 out[5] = 255;
1543                 used += 4;
1544                 break;
1545
1546         case SEQ_NOTEON:
1547                 out[0] = EV_CHN_VOICE;
1548                 out[1] = dev;
1549                 out[2] = MIDI_NOTEON;
1550                 out[3] = chn;
1551                 out[4] = note;
1552                 out[5] = vel;
1553                 used += 4;
1554                 break;
1555
1556                 /*
1557                  * wait delay = (event[2] << 16) + (event[3] << 8) + event[4]
1558                  */
1559
1560         case SEQ_PGMCHANGE:
1561                 out[0] = EV_CHN_COMMON;
1562                 out[1] = dev;
1563                 out[2] = MIDI_PGM_CHANGE;
1564                 out[3] = chn;
1565                 out[4] = note;
1566                 out[5] = vel;
1567                 used += 4;
1568                 break;
1569 /*
1570                 out[0] = EV_TIMING;
1571                 out[1] = dev;
1572                 out[2] = MIDI_PGM_CHANGE;
1573                 out[3] = chn;
1574                 out[4] = note;
1575                 out[5] = vel;
1576                 SEQ_DEBUG(4,printf("seq_playevent: synctimer\n"));
1577                 break;
1578 */
1579
1580         case SEQ_MIDIPUTC:
1581                 SEQ_DEBUG(4,
1582                     printf("seq_playevent: put data 0x%02x, unit %d.\n",
1583                     event[1], event[2]));
1584                 /*
1585                  * Pass through to the midi device.
1586                  * device = event[2]
1587                  * data = event[1]
1588                  */
1589                 out[0] = SEQ_MIDIPUTC;
1590                 out[1] = dev;
1591                 out[2] = chn;
1592                 used += 4;
1593                 break;
1594 #ifdef notyet
1595         case SEQ_ECHO:
1596                 /*
1597                  * This isn't handled here yet because I don't know if I can
1598                  * just use four bytes events.  There might be consequences
1599                  * in the _read routing
1600                  */
1601                 if (seq_copytoinput(scp, event, 4) == EAGAIN) {
1602                         ret = QUEUEFULL;
1603                         break;
1604                 }
1605                 ret = MORE;
1606                 break;
1607 #endif
1608         case SEQ_EXTENDED:
1609                 switch (event[1]) {
1610                 case SEQ_NOTEOFF:
1611                 case SEQ_NOTEON:
1612                 case SEQ_PGMCHANGE:
1613                         event++;
1614                         used = 4;
1615                         goto restart;
1616                         break;
1617                 case SEQ_AFTERTOUCH:
1618                         /*
1619                          * SYNTH_AFTERTOUCH(md, event[3], event[4])
1620                          */
1621                 case SEQ_BALANCE:
1622                         /*
1623                          * SYNTH_PANNING(md, event[3], (char)event[4])
1624                          */
1625                 case SEQ_CONTROLLER:
1626                         /*
1627                          * SYNTH_CONTROLLER(md, event[3], event[4], *(short *)&event[5])
1628                          */
1629                 case SEQ_VOLMODE:
1630                         /*
1631                          * SYNTH_VOLUMEMETHOD(md, event[3])
1632                          */
1633                 default:
1634                         SEQ_DEBUG(2,
1635                             printf("seq_convertold: SEQ_EXTENDED type %d"
1636                             "not handled\n", event[1]));
1637                         break;
1638                 }
1639                 break;
1640         case SEQ_WAIT:
1641                 out[0] = EV_TIMING;
1642                 out[1] = TMR_WAIT_REL;
1643                 out[4] = event[2];
1644                 out[5] = event[3];
1645                 out[6] = event[4];
1646
1647                 SEQ_DEBUG(5, printf("SEQ_WAIT %d",
1648                     event[2] + (event[3] << 8) + (event[4] << 24)));
1649
1650                 used += 4;
1651                 break;
1652
1653         case SEQ_ECHO:
1654         case SEQ_SYNCTIMER:
1655         case SEQ_PRIVATE:
1656         default:
1657                 SEQ_DEBUG(2,
1658                   printf("seq_convertold: event type %d not handled %d %d %d\n",
1659                     event[0], event[1], event[2], event[3]));
1660                 break;
1661         }
1662         return used;
1663 }
1664
1665 /*
1666  * Writting to the sequencer buffer never blocks and drops
1667  * input which cannot be queued
1668  */
1669 void
1670 seq_copytoinput(struct seq_softc *scp, u_char *event, int len)
1671 {
1672
1673         mtx_assert(&scp->seq_lock, MA_OWNED);
1674
1675         if (MIDIQ_AVAIL(scp->in_q) < len) {
1676                 /*
1677                  * ENOROOM?  EINPUTDROPPED? ETOUGHLUCK?
1678                  */
1679                 SEQ_DEBUG(2, printf("seq_copytoinput: queue full\n"));
1680         } else {
1681                 MIDIQ_ENQ(scp->in_q, event, len);
1682                 selwakeup(&scp->in_sel);
1683                 cv_broadcast(&scp->in_cv);
1684         }
1685
1686 }
1687
1688 static int
1689 seq_chnvoice(struct seq_softc *scp, kobj_t md, u_char *event)
1690 {
1691         int ret, voice;
1692         u_char cmd, chn, note, parm;
1693
1694         ret = 0;
1695         cmd = event[2];
1696         chn = event[3];
1697         note = event[4];
1698         parm = event[5];
1699
1700         mtx_assert(&scp->seq_lock, MA_OWNED);
1701
1702         SEQ_DEBUG(5, printf("seq_chnvoice: unit %d, dev %d, cmd %s,"
1703             " chn %d, note %d, parm %d.\n", scp->unit, event[1],
1704             midi_cmdname(cmd, cmdtab_seqcv), chn, note, parm));
1705
1706         voice = SYNTH_ALLOC(md, chn, note);
1707
1708         mtx_unlock(&scp->seq_lock);
1709
1710         switch (cmd) {
1711         case MIDI_NOTEON:
1712                 if (note < 128 || note == 255) {
1713 #if 0
1714                         if (scp->music && chn == 9) {
1715                                 /*
1716                                  * This channel is a percussion. The note
1717                                  * number is the patch number.
1718                                  */
1719                                 /*
1720                                 mtx_unlock(&scp->seq_lock);
1721                                 if (SYNTH_SETINSTR(md, voice, 128 + note)
1722                                     == EAGAIN) {
1723                                         mtx_lock(&scp->seq_lock);
1724                                         return (QUEUEFULL);
1725                                 }
1726                                 mtx_lock(&scp->seq_lock);
1727                                 */
1728                                 note = 60;      /* Middle C. */
1729                         }
1730 #endif
1731                         if (scp->music) {
1732                                 /*
1733                                 mtx_unlock(&scp->seq_lock);
1734                                 if (SYNTH_SETUPVOICE(md, voice, chn)
1735                                     == EAGAIN) {
1736                                         mtx_lock(&scp->seq_lock);
1737                                         return (QUEUEFULL);
1738                                 }
1739                                 mtx_lock(&scp->seq_lock);
1740                                 */
1741                         }
1742                         SYNTH_STARTNOTE(md, voice, note, parm);
1743                 }
1744                 break;
1745         case MIDI_NOTEOFF:
1746                 SYNTH_KILLNOTE(md, voice, note, parm);
1747                 break;
1748         case MIDI_KEY_PRESSURE:
1749                 SYNTH_AFTERTOUCH(md, voice, parm);
1750                 break;
1751         default:
1752                 ret = 1;
1753                 SEQ_DEBUG(2, printf("seq_chnvoice event type %d not handled\n",
1754                     event[1]));
1755                 break;
1756         }
1757
1758         mtx_lock(&scp->seq_lock);
1759         return ret;
1760 }
1761
1762 static int
1763 seq_chncommon(struct seq_softc *scp, kobj_t md, u_char *event)
1764 {
1765         int ret;
1766         u_short w14;
1767         u_char cmd, chn, p1;
1768
1769         ret = 0;
1770         cmd = event[2];
1771         chn = event[3];
1772         p1 = event[4];
1773         w14 = *(u_short *)&event[6];
1774
1775         SEQ_DEBUG(5, printf("seq_chncommon: unit %d, dev %d, cmd %s, chn %d,"
1776             " p1 %d, w14 %d.\n", scp->unit, event[1],
1777             midi_cmdname(cmd, cmdtab_seqccmn), chn, p1, w14));
1778         mtx_unlock(&scp->seq_lock);
1779         switch (cmd) {
1780         case MIDI_PGM_CHANGE:
1781                 SEQ_DEBUG(4, printf("seq_chncommon pgmchn chn %d pg %d\n",
1782                     chn, p1));
1783                 SYNTH_SETINSTR(md, chn, p1);
1784                 break;
1785         case MIDI_CTL_CHANGE:
1786                 SEQ_DEBUG(4, printf("seq_chncommon ctlch chn %d pg %d %d\n",
1787                     chn, p1, w14));
1788                 SYNTH_CONTROLLER(md, chn, p1, w14);
1789                 break;
1790         case MIDI_PITCH_BEND:
1791                 if (scp->music) {
1792                         /*
1793                          * TODO: MIDI_PITCH_BEND
1794                          */
1795 #if 0
1796                         mtx_lock(&md->synth.vc_mtx);
1797                         md->synth.chn_info[chn].bender_value = w14;
1798                         if (md->midiunit >= 0) {
1799                                 /*
1800                                  * Handle all of the notes playing on this
1801                                  * channel.
1802                                  */
1803                                 key = ((int)chn << 8);
1804                                 for (i = 0; i < md->synth.alloc.max_voice; i++)
1805                                         if ((md->synth.alloc.map[i] & 0xff00) == key) {
1806                                                 mtx_unlock(&md->synth.vc_mtx);
1807                                                 mtx_unlock(&scp->seq_lock);
1808                                                 if (md->synth.bender(md, i, w14) == EAGAIN) {
1809                                                         mtx_lock(&scp->seq_lock);
1810                                                         return (QUEUEFULL);
1811                                                 }
1812                                                 mtx_lock(&scp->seq_lock);
1813                                         }
1814                         } else {
1815                                 mtx_unlock(&md->synth.vc_mtx);
1816                                 mtx_unlock(&scp->seq_lock);
1817                                 if (md->synth.bender(md, chn, w14) == EAGAIN) {
1818                                         mtx_lock(&scp->seq_lock);
1819                                         return (QUEUEFULL);
1820                                 }
1821                                 mtx_lock(&scp->seq_lock);
1822                         }
1823 #endif
1824                 } else
1825                         SYNTH_BENDER(md, chn, w14);
1826                 break;
1827         default:
1828                 ret = 1;
1829                 SEQ_DEBUG(2,
1830                     printf("seq_chncommon event type %d not handled.\n",
1831                     event[1]));
1832                 break;
1833
1834         }
1835         mtx_lock(&scp->seq_lock);
1836         return ret;
1837 }
1838
1839 static int
1840 seq_timing(struct seq_softc *scp, u_char *event)
1841 {
1842         int param;
1843         int ret;
1844
1845         ret = 0;
1846         param = event[4] + (event[5] << 8) +
1847             (event[6] << 16) + (event[7] << 24);
1848
1849         SEQ_DEBUG(5, printf("seq_timing: unit %d, cmd %d, param %d.\n",
1850             scp->unit, event[1], param));
1851         switch (event[1]) {
1852         case TMR_WAIT_REL:
1853                 timer_wait(scp, param, 0);
1854                 break;
1855         case TMR_WAIT_ABS:
1856                 timer_wait(scp, param, 1);
1857                 break;
1858         case TMR_START:
1859                 timer_start(scp);
1860                 cv_broadcast(&scp->reset_cv);
1861                 break;
1862         case TMR_STOP:
1863                 timer_stop(scp);
1864                 /*
1865                  * The following cv_broadcast isn't needed since we only
1866                  * wait for 0->1 transitions.  It probably won't hurt
1867                  */
1868                 cv_broadcast(&scp->reset_cv);
1869                 break;
1870         case TMR_CONTINUE:
1871                 timer_continue(scp);
1872                 cv_broadcast(&scp->reset_cv);
1873                 break;
1874         case TMR_TEMPO:
1875                 if (param < 8)
1876                         param = 8;
1877                 if (param > 360)
1878                         param = 360;
1879                 SEQ_DEBUG(4, printf("Timer set tempo %d\n", param));
1880                 timer_setvals(scp, param, scp->timerbase);
1881                 break;
1882         case TMR_TIMERBASE:
1883                 if (param < 1)
1884                         param = 1;
1885                 if (param > 1000)
1886                         param = 1000;
1887                 SEQ_DEBUG(4, printf("Timer set timerbase %d\n", param));
1888                 timer_setvals(scp, scp->tempo, param);
1889                 break;
1890         case TMR_ECHO:
1891                 /*
1892                  * TODO: Consider making 4-byte events for /dev/sequencer
1893                  * PRO: Maybe needed by legacy apps
1894                  * CON: soundcard.h has been warning for a while many years
1895                  * to expect 8 byte events.
1896                  */
1897 #if 0
1898                 if (scp->music)
1899                         seq_copytoinput(scp, event, 8);
1900                 else {
1901                         param = (param << 8 | SEQ_ECHO);
1902                         seq_copytoinput(scp, (u_char *)&param, 4);
1903                 }
1904 #else
1905                 seq_copytoinput(scp, event, 8);
1906 #endif
1907                 break;
1908         default:
1909                 SEQ_DEBUG(2, printf("seq_timing event type %d not handled.\n",
1910                     event[1]));
1911                 ret = 1;
1912                 break;
1913         }
1914         return ret;
1915 }
1916
1917 static int
1918 seq_local(struct seq_softc *scp, u_char *event)
1919 {
1920         int ret;
1921
1922         ret = 0;
1923         mtx_assert(&scp->seq_lock, MA_OWNED);
1924
1925         SEQ_DEBUG(5, printf("seq_local: unit %d, cmd %d\n", scp->unit,
1926             event[1]));
1927         switch (event[1]) {
1928         default:
1929                 SEQ_DEBUG(1, printf("seq_local event type %d not handled\n",
1930                     event[1]));
1931                 ret = 1;
1932                 break;
1933         }
1934         return ret;
1935 }
1936
1937 static int
1938 seq_sysex(struct seq_softc *scp, kobj_t md, u_char *event)
1939 {
1940         int i, l;
1941
1942         mtx_assert(&scp->seq_lock, MA_OWNED);
1943         SEQ_DEBUG(5, printf("seq_sysex: unit %d device %d\n", scp->unit,
1944             event[1]));
1945         l = 0;
1946         for (i = 0; i < 6 && event[i + 2] != 0xff; i++)
1947                 l = i + 1;
1948         if (l > 0) {
1949                 mtx_unlock(&scp->seq_lock);
1950                 if (SYNTH_SENDSYSEX(md, &event[2], l) == EAGAIN) {
1951                         mtx_lock(&scp->seq_lock);
1952                         return 1;
1953                 }
1954                 mtx_lock(&scp->seq_lock);
1955         }
1956         return 0;
1957 }
1958
1959 /*
1960  * Reset no longer closes the raw devices nor seq_sync's
1961  * Callers are IOCTL and seq_close
1962  */
1963 static void
1964 seq_reset(struct seq_softc *scp)
1965 {
1966         int chn, i;
1967         kobj_t m;
1968
1969         mtx_assert(&scp->seq_lock, MA_OWNED);
1970
1971         SEQ_DEBUG(5, printf("seq_reset: unit %d.\n", scp->unit));
1972
1973         /*
1974          * Stop reading and writing.
1975          */
1976
1977         /* scp->recording = 0; */
1978         scp->playing = 0;
1979         cv_broadcast(&scp->state_cv);
1980         cv_broadcast(&scp->out_cv);
1981         cv_broadcast(&scp->reset_cv);
1982
1983         /*
1984          * For now, don't reset the timers.
1985          */
1986         MIDIQ_CLEAR(scp->in_q);
1987         MIDIQ_CLEAR(scp->out_q);
1988
1989         for (i = 0; i < scp->midi_number; i++) {
1990                 m = scp->midis[i];
1991                 mtx_unlock(&scp->seq_lock);
1992                 SYNTH_RESET(m);
1993                 for (chn = 0; chn < 16; chn++) {
1994                         SYNTH_CONTROLLER(m, chn, 123, 0);
1995                         SYNTH_CONTROLLER(m, chn, 121, 0);
1996                         SYNTH_BENDER(m, chn, 1 << 13);
1997                 }
1998                 mtx_lock(&scp->seq_lock);
1999         }
2000 }
2001
2002 /*
2003  * seq_sync
2004  * *really* flush the output queue
2005  * flush the event queue, then flush the synthsisers.
2006  * Callers are IOCTL and close
2007  */
2008
2009 #define SEQ_SYNC_TIMEOUT 8
2010 static int
2011 seq_sync(struct seq_softc *scp)
2012 {
2013         int i, rl, sync[16], done;
2014
2015         mtx_assert(&scp->seq_lock, MA_OWNED);
2016
2017         SEQ_DEBUG(4, printf("seq_sync: unit %d.\n", scp->unit));
2018
2019         /*
2020          * Wait until output queue is empty.  Check every so often to see if
2021          * the queue is moving along.  If it isn't just abort.
2022          */
2023         while (!MIDIQ_EMPTY(scp->out_q)) {
2024
2025                 if (!scp->playing) {
2026                         scp->playing = 1;
2027                         cv_broadcast(&scp->state_cv);
2028                         cv_broadcast(&scp->out_cv);
2029                 }
2030                 rl = MIDIQ_LEN(scp->out_q);
2031
2032                 i = cv_timedwait_sig(&scp->out_cv,
2033                     &scp->seq_lock, SEQ_SYNC_TIMEOUT * hz);
2034
2035                 if (i == EINTR || i == ERESTART) {
2036                         if (i == EINTR) {
2037                                 /*
2038                                  * XXX: I don't know why we stop playing
2039                                  */
2040                                 scp->playing = 0;
2041                                 cv_broadcast(&scp->out_cv);
2042                         }
2043                         return i;
2044                 }
2045                 if (i == EWOULDBLOCK && rl == MIDIQ_LEN(scp->out_q) &&
2046                     scp->waiting == 0) {
2047                         /*
2048                          * A queue seems to be stuck up. Give up and clear
2049                          * queues.
2050                          */
2051                         MIDIQ_CLEAR(scp->out_q);
2052                         scp->playing = 0;
2053                         cv_broadcast(&scp->state_cv);
2054                         cv_broadcast(&scp->out_cv);
2055                         cv_broadcast(&scp->reset_cv);
2056
2057                         /*
2058                          * TODO: Consider if the raw devices need to be flushed
2059                          */
2060
2061                         SEQ_DEBUG(1, printf("seq_sync queue stuck, aborting\n"));
2062
2063                         return i;
2064                 }
2065         }
2066
2067         scp->playing = 0;
2068         /*
2069          * Since syncing a midi device might block, unlock scp->seq_lock.
2070          */
2071
2072         mtx_unlock(&scp->seq_lock);
2073         for (i = 0; i < scp->midi_number; i++)
2074                 sync[i] = 1;
2075
2076         do {
2077                 done = 1;
2078                 for (i = 0; i < scp->midi_number; i++)
2079                         if (sync[i]) {
2080                                 if (SYNTH_INSYNC(scp->midis[i]) == 0)
2081                                         sync[i] = 0;
2082                                 else
2083                                         done = 0;
2084                         }
2085                 if (!done)
2086                         DELAY(5000);
2087
2088         } while (!done);
2089
2090         mtx_lock(&scp->seq_lock);
2091         return 0;
2092 }
2093
2094 char   *
2095 midi_cmdname(int cmd, midi_cmdtab *tab)
2096 {
2097         while (tab->name != NULL) {
2098                 if (cmd == tab->cmd)
2099                         return (tab->name);
2100                 tab++;
2101         }
2102
2103         return ("unknown");
2104 }