| 1 | /* $NetBSD: sequencer.c,v 1.64 2015/08/20 14:40:17 christos Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1998, 2008 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Lennart Augustsson (augustss@NetBSD.org) and by Andrew Doran. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * Locking: |
| 34 | * |
| 35 | * o sc_lock: provides atomic access to all data structures. Taken from |
| 36 | * both process and soft interrupt context. |
| 37 | * |
| 38 | * o sc_dvlock: serializes operations on /dev/sequencer. Taken from |
| 39 | * process context. Dropped while waiting for data in sequencerread() |
| 40 | * to allow concurrent reads/writes while no data available. |
| 41 | * |
| 42 | * o sc_isopen: we allow only one concurrent open, only to prevent user |
| 43 | * and/or application error. |
| 44 | * |
| 45 | * o MIDI softc locks. These can be spinlocks and there can be many of |
| 46 | * them, because we can open many MIDI devices. We take these only in two |
| 47 | * places: when enabling redirection from the MIDI device and when |
| 48 | * disabling it (open/close). midiseq_in() is called by the MIDI driver |
| 49 | * with its own lock held when passing data into this module. To avoid |
| 50 | * lock order and context problems, we package the received message as a |
| 51 | * sequencer_pcqitem_t and put onto a producer-consumer queue. A soft |
| 52 | * interrupt is scheduled to dequeue and decode the message later where we |
| 53 | * can safely acquire the sequencer device's sc_lock. PCQ is lockless for |
| 54 | * multiple producer, single consumer settings like this one. |
| 55 | */ |
| 56 | |
| 57 | #include <sys/cdefs.h> |
| 58 | __KERNEL_RCSID(0, "$NetBSD: sequencer.c,v 1.64 2015/08/20 14:40:17 christos Exp $" ); |
| 59 | |
| 60 | #include "sequencer.h" |
| 61 | |
| 62 | #include <sys/param.h> |
| 63 | #include <sys/ioctl.h> |
| 64 | #include <sys/fcntl.h> |
| 65 | #include <sys/vnode.h> |
| 66 | #include <sys/select.h> |
| 67 | #include <sys/poll.h> |
| 68 | #include <sys/kmem.h> |
| 69 | #include <sys/proc.h> |
| 70 | #include <sys/systm.h> |
| 71 | #include <sys/syslog.h> |
| 72 | #include <sys/kernel.h> |
| 73 | #include <sys/signalvar.h> |
| 74 | #include <sys/conf.h> |
| 75 | #include <sys/audioio.h> |
| 76 | #include <sys/midiio.h> |
| 77 | #include <sys/device.h> |
| 78 | #include <sys/intr.h> |
| 79 | #include <sys/atomic.h> |
| 80 | #include <sys/pcq.h> |
| 81 | #include <sys/vnode.h> |
| 82 | #include <sys/kauth.h> |
| 83 | |
| 84 | #include <dev/midi_if.h> |
| 85 | #include <dev/midivar.h> |
| 86 | #include <dev/sequencervar.h> |
| 87 | |
| 88 | #include "ioconf.h" |
| 89 | |
| 90 | #define ADDTIMEVAL(a, b) ( \ |
| 91 | (a)->tv_sec += (b)->tv_sec, \ |
| 92 | (a)->tv_usec += (b)->tv_usec, \ |
| 93 | (a)->tv_usec > 1000000 ? ((a)->tv_sec++, (a)->tv_usec -= 1000000) : 0\ |
| 94 | ) |
| 95 | |
| 96 | #define SUBTIMEVAL(a, b) ( \ |
| 97 | (a)->tv_sec -= (b)->tv_sec, \ |
| 98 | (a)->tv_usec -= (b)->tv_usec, \ |
| 99 | (a)->tv_usec < 0 ? ((a)->tv_sec--, (a)->tv_usec += 1000000) : 0\ |
| 100 | ) |
| 101 | |
| 102 | #ifdef AUDIO_DEBUG |
| 103 | #define DPRINTF(x) if (sequencerdebug) printf x |
| 104 | #define DPRINTFN(n,x) if (sequencerdebug >= (n)) printf x |
| 105 | int sequencerdebug = 0; |
| 106 | #else |
| 107 | #define DPRINTF(x) |
| 108 | #define DPRINTFN(n,x) |
| 109 | #endif |
| 110 | |
| 111 | #define SEQ_NOTE_MAX 128 |
| 112 | #define SEQ_NOTE_XXX 255 |
| 113 | |
| 114 | #define RECALC_USPERDIV(t) \ |
| 115 | ((t)->usperdiv = 60*1000000L/((t)->tempo_beatpermin*(t)->timebase_divperbeat)) |
| 116 | |
| 117 | typedef union sequencer_pcqitem { |
| 118 | void *qi_ptr; |
| 119 | char qi_msg[4]; |
| 120 | } sequencer_pcqitem_t; |
| 121 | |
| 122 | static void seq_reset(struct sequencer_softc *); |
| 123 | static int seq_do_command(struct sequencer_softc *, seq_event_t *); |
| 124 | static int seq_do_chnvoice(struct sequencer_softc *, seq_event_t *); |
| 125 | static int seq_do_chncommon(struct sequencer_softc *, seq_event_t *); |
| 126 | static void seq_timer_waitabs(struct sequencer_softc *, uint32_t); |
| 127 | static int seq_do_timing(struct sequencer_softc *, seq_event_t *); |
| 128 | static int seq_do_local(struct sequencer_softc *, seq_event_t *); |
| 129 | static int seq_do_sysex(struct sequencer_softc *, seq_event_t *); |
| 130 | static int seq_do_fullsize(struct sequencer_softc *, seq_event_t *, struct uio *); |
| 131 | static int seq_input_event(struct sequencer_softc *, seq_event_t *); |
| 132 | static int seq_drain(struct sequencer_softc *); |
| 133 | static void seq_startoutput(struct sequencer_softc *); |
| 134 | static void seq_timeout(void *); |
| 135 | static int seq_to_new(seq_event_t *, struct uio *); |
| 136 | static void seq_softintr(void *); |
| 137 | |
| 138 | static int midiseq_out(struct midi_dev *, u_char *, u_int, int); |
| 139 | static struct midi_dev *midiseq_open(int, int); |
| 140 | static void midiseq_close(struct midi_dev *); |
| 141 | static void midiseq_reset(struct midi_dev *); |
| 142 | static int midiseq_noteon(struct midi_dev *, int, int, seq_event_t *); |
| 143 | static int midiseq_noteoff(struct midi_dev *, int, int, seq_event_t *); |
| 144 | static int midiseq_keypressure(struct midi_dev *, int, int, seq_event_t *); |
| 145 | static int midiseq_pgmchange(struct midi_dev *, int, seq_event_t *); |
| 146 | static int midiseq_chnpressure(struct midi_dev *, int, seq_event_t *); |
| 147 | static int midiseq_ctlchange(struct midi_dev *, int, seq_event_t *); |
| 148 | static int midiseq_pitchbend(struct midi_dev *, int, seq_event_t *); |
| 149 | static int midiseq_loadpatch(struct midi_dev *, struct sysex_info *, struct uio *); |
| 150 | void midiseq_in(struct midi_dev *, u_char *, int); |
| 151 | |
| 152 | static dev_type_open(sequenceropen); |
| 153 | static dev_type_close(sequencerclose); |
| 154 | static dev_type_read(sequencerread); |
| 155 | static dev_type_write(sequencerwrite); |
| 156 | static dev_type_ioctl(sequencerioctl); |
| 157 | static dev_type_poll(sequencerpoll); |
| 158 | static dev_type_kqfilter(sequencerkqfilter); |
| 159 | |
| 160 | const struct cdevsw sequencer_cdevsw = { |
| 161 | .d_open = sequenceropen, |
| 162 | .d_close = sequencerclose, |
| 163 | .d_read = sequencerread, |
| 164 | .d_write = sequencerwrite, |
| 165 | .d_ioctl = sequencerioctl, |
| 166 | .d_stop = nostop, |
| 167 | .d_tty = notty, |
| 168 | .d_poll = sequencerpoll, |
| 169 | .d_mmap = nommap, |
| 170 | .d_kqfilter = sequencerkqfilter, |
| 171 | .d_discard = nodiscard, |
| 172 | .d_flag = D_OTHER | D_MPSAFE |
| 173 | }; |
| 174 | static LIST_HEAD(, sequencer_softc) sequencers = LIST_HEAD_INITIALIZER(sequencers); |
| 175 | static kmutex_t sequencer_lock; |
| 176 | |
| 177 | static void |
| 178 | sequencerdestroy(struct sequencer_softc *sc) |
| 179 | { |
| 180 | callout_halt(&sc->sc_callout, &sc->lock); |
| 181 | callout_destroy(&sc->sc_callout); |
| 182 | softint_disestablish(sc->sih); |
| 183 | cv_destroy(&sc->rchan); |
| 184 | cv_destroy(&sc->wchan); |
| 185 | cv_destroy(&sc->lchan); |
| 186 | if (sc->pcq) |
| 187 | pcq_destroy(sc->pcq); |
| 188 | kmem_free(sc, sizeof(*sc)); |
| 189 | } |
| 190 | |
| 191 | static struct sequencer_softc * |
| 192 | sequencercreate(int unit) |
| 193 | { |
| 194 | struct sequencer_softc *sc = kmem_zalloc(sizeof(*sc), KM_SLEEP); |
| 195 | if (sc == NULL) { |
| 196 | #ifdef DIAGNOSTIC |
| 197 | printf("%s: out of memory\n" , __func__); |
| 198 | #endif |
| 199 | return NULL; |
| 200 | } |
| 201 | sc->sc_unit = unit; |
| 202 | callout_init(&sc->sc_callout, CALLOUT_MPSAFE); |
| 203 | sc->sih = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, |
| 204 | seq_softintr, sc); |
| 205 | mutex_init(&sc->lock, MUTEX_DEFAULT, IPL_NONE); |
| 206 | cv_init(&sc->rchan, "midiseqr" ); |
| 207 | cv_init(&sc->wchan, "midiseqw" ); |
| 208 | cv_init(&sc->lchan, "midiseql" ); |
| 209 | sc->pcq = pcq_create(SEQ_MAXQ, KM_SLEEP); |
| 210 | if (sc->pcq == NULL) { |
| 211 | sequencerdestroy(sc); |
| 212 | return NULL; |
| 213 | } |
| 214 | return sc; |
| 215 | } |
| 216 | |
| 217 | |
| 218 | static struct sequencer_softc * |
| 219 | sequencerget(int unit) |
| 220 | { |
| 221 | struct sequencer_softc *sc; |
| 222 | if (unit < 0) { |
| 223 | #ifdef DIAGNOSTIC |
| 224 | panic("%s: unit %d!" , __func__, unit); |
| 225 | #endif |
| 226 | return NULL; |
| 227 | } |
| 228 | mutex_enter(&sequencer_lock); |
| 229 | LIST_FOREACH(sc, &sequencers, sc_link) { |
| 230 | if (sc->sc_unit == unit) { |
| 231 | mutex_exit(&sequencer_lock); |
| 232 | return sc; |
| 233 | } |
| 234 | } |
| 235 | mutex_exit(&sequencer_lock); |
| 236 | if ((sc = sequencercreate(unit)) == NULL) |
| 237 | return NULL; |
| 238 | mutex_enter(&sequencer_lock); |
| 239 | LIST_INSERT_HEAD(&sequencers, sc, sc_link); |
| 240 | mutex_exit(&sequencer_lock); |
| 241 | return sc; |
| 242 | } |
| 243 | |
| 244 | #ifdef notyet |
| 245 | static void |
| 246 | sequencerput(struct sequencer_softc *sc) |
| 247 | { |
| 248 | mutex_enter(&sequencer_lock); |
| 249 | LIST_REMOVE(sc, sc_link); |
| 250 | mutex_exit(&sequencer_lock); |
| 251 | sequencerdestroy(sc); |
| 252 | } |
| 253 | #endif |
| 254 | |
| 255 | void |
| 256 | sequencerattach(int n) |
| 257 | { |
| 258 | mutex_init(&sequencer_lock, MUTEX_DEFAULT, IPL_NONE); |
| 259 | } |
| 260 | |
| 261 | /* |
| 262 | * Release reference to device acquired with sequencer_enter(). |
| 263 | */ |
| 264 | static void |
| 265 | sequencer_exit(struct sequencer_softc *sc) |
| 266 | { |
| 267 | |
| 268 | sc->dvlock--; |
| 269 | cv_broadcast(&sc->lchan); |
| 270 | mutex_exit(&sc->lock); |
| 271 | } |
| 272 | |
| 273 | /* |
| 274 | * Look up sequencer device and acquire locks for device access. |
| 275 | */ |
| 276 | static int |
| 277 | sequencer_enter(dev_t dev, struct sequencer_softc **scp) |
| 278 | { |
| 279 | struct sequencer_softc *sc; |
| 280 | |
| 281 | /* First, find the device and take sc_lock. */ |
| 282 | if ((sc = sequencerget(SEQUENCERUNIT(dev))) == NULL) |
| 283 | return ENXIO; |
| 284 | mutex_enter(&sc->lock); |
| 285 | while (sc->dvlock) { |
| 286 | cv_wait(&sc->lchan, &sc->lock); |
| 287 | } |
| 288 | sc->dvlock++; |
| 289 | if (sc->dying) { |
| 290 | sequencer_exit(sc); |
| 291 | return EIO; |
| 292 | } |
| 293 | *scp = sc; |
| 294 | return 0; |
| 295 | } |
| 296 | |
| 297 | static int |
| 298 | sequenceropen(dev_t dev, int flags, int ifmt, struct lwp *l) |
| 299 | { |
| 300 | struct sequencer_softc *sc; |
| 301 | struct midi_dev *md; |
| 302 | struct midi_softc *msc; |
| 303 | int error, unit, mdno; |
| 304 | |
| 305 | DPRINTF(("sequenceropen\n" )); |
| 306 | |
| 307 | if ((error = sequencer_enter(dev, &sc)) != 0) |
| 308 | return error; |
| 309 | if (sc->isopen != 0) { |
| 310 | sequencer_exit(sc); |
| 311 | return EBUSY; |
| 312 | } |
| 313 | |
| 314 | if (SEQ_IS_OLD(SEQUENCERUNIT(dev))) |
| 315 | sc->mode = SEQ_OLD; |
| 316 | else |
| 317 | sc->mode = SEQ_NEW; |
| 318 | sc->isopen++; |
| 319 | sc->flags = flags & (FREAD|FWRITE); |
| 320 | sc->pbus = 0; |
| 321 | sc->async = 0; |
| 322 | sc->input_stamp = ~0; |
| 323 | |
| 324 | sc->nmidi = 0; |
| 325 | sc->ndevs = midi_unit_count(); |
| 326 | sc->timer.timebase_divperbeat = 100; |
| 327 | sc->timer.tempo_beatpermin = 60; |
| 328 | RECALC_USPERDIV(&sc->timer); |
| 329 | sc->timer.divs_lastevent = sc->timer.divs_lastchange = 0; |
| 330 | microtime(&sc->timer.reftime); |
| 331 | |
| 332 | SEQ_QINIT(&sc->inq); |
| 333 | SEQ_QINIT(&sc->outq); |
| 334 | sc->lowat = SEQ_MAXQ / 2; |
| 335 | |
| 336 | if (sc->ndevs > 0) { |
| 337 | mutex_exit(&sc->lock); |
| 338 | sc->devs = kmem_alloc(sc->ndevs * sizeof(struct midi_dev *), |
| 339 | KM_SLEEP); |
| 340 | for (unit = 0; unit < sc->ndevs; unit++) { |
| 341 | md = midiseq_open(unit, flags); |
| 342 | if (md) { |
| 343 | sc->devs[sc->nmidi++] = md; |
| 344 | md->seq = sc; |
| 345 | md->doingsysex = 0; |
| 346 | DPRINTF(("%s: midi unit %d opened as seq %p\n" , |
| 347 | __func__, unit, md)); |
| 348 | } else { |
| 349 | DPRINTF(("%s: midi unit %d not opened as seq\n" , |
| 350 | __func__, unit)); |
| 351 | } |
| 352 | } |
| 353 | mutex_enter(&sc->lock); |
| 354 | } else { |
| 355 | sc->devs = NULL; |
| 356 | } |
| 357 | |
| 358 | /* Only now redirect input from MIDI devices. */ |
| 359 | for (mdno = 0; mdno < sc->nmidi; mdno++) { |
| 360 | extern struct cfdriver midi_cd; |
| 361 | |
| 362 | msc = device_lookup_private(&midi_cd, sc->devs[mdno]->unit); |
| 363 | if (msc) { |
| 364 | mutex_enter(msc->lock); |
| 365 | msc->seqopen = 1; |
| 366 | mutex_exit(msc->lock); |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | seq_reset(sc); |
| 371 | sequencer_exit(sc); |
| 372 | |
| 373 | DPRINTF(("%s: mode=%d, nmidi=%d\n" , __func__, sc->mode, sc->nmidi)); |
| 374 | return 0; |
| 375 | } |
| 376 | |
| 377 | static int |
| 378 | seq_drain(struct sequencer_softc *sc) |
| 379 | { |
| 380 | int error; |
| 381 | |
| 382 | KASSERT(mutex_owned(&sc->lock)); |
| 383 | |
| 384 | DPRINTFN(3, ("seq_drain: %p, len=%d\n" , sc, SEQ_QLEN(&sc->outq))); |
| 385 | seq_startoutput(sc); |
| 386 | error = 0; |
| 387 | while (!SEQ_QEMPTY(&sc->outq) && !error) |
| 388 | error = cv_timedwait_sig(&sc->wchan, &sc->lock, 60*hz); |
| 389 | return (error); |
| 390 | } |
| 391 | |
| 392 | static void |
| 393 | seq_timeout(void *addr) |
| 394 | { |
| 395 | struct sequencer_softc *sc = addr; |
| 396 | proc_t *p; |
| 397 | pid_t pid; |
| 398 | |
| 399 | DPRINTFN(4, ("seq_timeout: %p\n" , sc)); |
| 400 | |
| 401 | mutex_enter(&sc->lock); |
| 402 | if (sc->timeout == 0) { |
| 403 | mutex_spin_exit(&sc->lock); |
| 404 | return; |
| 405 | } |
| 406 | sc->timeout = 0; |
| 407 | seq_startoutput(sc); |
| 408 | if (SEQ_QLEN(&sc->outq) >= sc->lowat) { |
| 409 | mutex_exit(&sc->lock); |
| 410 | return; |
| 411 | } |
| 412 | cv_broadcast(&sc->wchan); |
| 413 | selnotify(&sc->wsel, 0, NOTE_SUBMIT); |
| 414 | if ((pid = sc->async) != 0) { |
| 415 | mutex_enter(proc_lock); |
| 416 | if ((p = proc_find(pid)) != NULL) |
| 417 | psignal(p, SIGIO); |
| 418 | mutex_exit(proc_lock); |
| 419 | } |
| 420 | mutex_exit(&sc->lock); |
| 421 | } |
| 422 | |
| 423 | static void |
| 424 | seq_startoutput(struct sequencer_softc *sc) |
| 425 | { |
| 426 | struct sequencer_queue *q = &sc->outq; |
| 427 | seq_event_t cmd; |
| 428 | |
| 429 | KASSERT(mutex_owned(&sc->lock)); |
| 430 | |
| 431 | if (sc->timeout) |
| 432 | return; |
| 433 | DPRINTFN(4, ("seq_startoutput: %p, len=%d\n" , sc, SEQ_QLEN(q))); |
| 434 | while (!SEQ_QEMPTY(q) && !sc->timeout) { |
| 435 | SEQ_QGET(q, cmd); |
| 436 | seq_do_command(sc, &cmd); |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | static int |
| 441 | sequencerclose(dev_t dev, int flags, int ifmt, struct lwp *l) |
| 442 | { |
| 443 | struct sequencer_softc *sc; |
| 444 | struct midi_softc *msc; |
| 445 | int unit, error; |
| 446 | |
| 447 | DPRINTF(("%s: %" PRIx64"\n" , __func__, dev)); |
| 448 | |
| 449 | if ((error = sequencer_enter(dev, &sc)) != 0) |
| 450 | return error; |
| 451 | seq_drain(sc); |
| 452 | if (sc->timeout) { |
| 453 | callout_halt(&sc->sc_callout, &sc->lock); |
| 454 | sc->timeout = 0; |
| 455 | } |
| 456 | /* Bin input from MIDI devices. */ |
| 457 | for (unit = 0; unit < sc->nmidi; unit++) { |
| 458 | extern struct cfdriver midi_cd; |
| 459 | |
| 460 | msc = device_lookup_private(&midi_cd, unit); |
| 461 | if (msc) { |
| 462 | mutex_enter(msc->lock); |
| 463 | msc->seqopen = 0; |
| 464 | mutex_exit(msc->lock); |
| 465 | } |
| 466 | } |
| 467 | mutex_exit(&sc->lock); |
| 468 | |
| 469 | for (unit = 0; unit < sc->nmidi; unit++) |
| 470 | if (sc->devs[unit] != NULL) |
| 471 | midiseq_close(sc->devs[unit]); |
| 472 | if (sc->devs != NULL) { |
| 473 | KASSERT(sc->ndevs > 0); |
| 474 | kmem_free(sc->devs, sc->ndevs * sizeof(struct midi_dev *)); |
| 475 | sc->devs = NULL; |
| 476 | } |
| 477 | |
| 478 | mutex_enter(&sc->lock); |
| 479 | sc->isopen = 0; |
| 480 | sequencer_exit(sc); |
| 481 | |
| 482 | DPRINTF(("%s: %" PRIx64" done\n" , __func__, dev)); |
| 483 | |
| 484 | return (0); |
| 485 | } |
| 486 | |
| 487 | static int |
| 488 | seq_input_event(struct sequencer_softc *sc, seq_event_t *cmd) |
| 489 | { |
| 490 | struct sequencer_queue *q; |
| 491 | |
| 492 | KASSERT(mutex_owned(&sc->lock)); |
| 493 | |
| 494 | DPRINTFN(2, ("seq_input_event: %02x %02x %02x %02x %02x " |
| 495 | "%02x %02x %02x\n" , cmd->tag, |
| 496 | cmd->unknown.byte[0], cmd->unknown.byte[1], |
| 497 | cmd->unknown.byte[2], cmd->unknown.byte[3], |
| 498 | cmd->unknown.byte[4], cmd->unknown.byte[5], |
| 499 | cmd->unknown.byte[6])); |
| 500 | q = &sc->inq; |
| 501 | if (SEQ_QFULL(q)) |
| 502 | return (ENOMEM); |
| 503 | SEQ_QPUT(q, *cmd); |
| 504 | cv_broadcast(&sc->rchan); |
| 505 | selnotify(&sc->rsel, 0, NOTE_SUBMIT); |
| 506 | if (sc->async != 0) { |
| 507 | proc_t *p; |
| 508 | |
| 509 | mutex_enter(proc_lock); |
| 510 | if ((p = proc_find(sc->async)) != NULL) |
| 511 | psignal(p, SIGIO); |
| 512 | mutex_exit(proc_lock); |
| 513 | } |
| 514 | return 0; |
| 515 | } |
| 516 | |
| 517 | static void |
| 518 | seq_softintr(void *addr) |
| 519 | { |
| 520 | struct sequencer_softc *sc; |
| 521 | struct timeval now; |
| 522 | seq_event_t ev; |
| 523 | int status, chan, unit; |
| 524 | sequencer_pcqitem_t qi; |
| 525 | u_long t; |
| 526 | |
| 527 | sc = addr; |
| 528 | |
| 529 | mutex_enter(&sc->lock); |
| 530 | |
| 531 | qi.qi_ptr = pcq_get(sc->pcq); |
| 532 | if (qi.qi_ptr == NULL) { |
| 533 | mutex_exit(&sc->lock); |
| 534 | return; |
| 535 | } |
| 536 | KASSERT((qi.qi_msg[3] & 0x80) != 0); |
| 537 | unit = qi.qi_msg[3] & ~0x80; |
| 538 | status = MIDI_GET_STATUS(qi.qi_msg[0]); |
| 539 | chan = MIDI_GET_CHAN(qi.qi_msg[0]); |
| 540 | switch (status) { |
| 541 | case MIDI_NOTEON: /* midi(4) always canonicalizes hidden note-off */ |
| 542 | ev = SEQ_MK_CHN(NOTEON, .device=unit, .channel=chan, |
| 543 | .key=qi.qi_msg[1], .velocity=qi.qi_msg[2]); |
| 544 | break; |
| 545 | case MIDI_NOTEOFF: |
| 546 | ev = SEQ_MK_CHN(NOTEOFF, .device=unit, .channel=chan, |
| 547 | .key=qi.qi_msg[1], .velocity=qi.qi_msg[2]); |
| 548 | break; |
| 549 | case MIDI_KEY_PRESSURE: |
| 550 | ev = SEQ_MK_CHN(KEY_PRESSURE, .device=unit, .channel=chan, |
| 551 | .key=qi.qi_msg[1], .pressure=qi.qi_msg[2]); |
| 552 | break; |
| 553 | case MIDI_CTL_CHANGE: /* XXX not correct for MSB */ |
| 554 | ev = SEQ_MK_CHN(CTL_CHANGE, .device=unit, .channel=chan, |
| 555 | .controller=qi.qi_msg[1], .value=qi.qi_msg[2]); |
| 556 | break; |
| 557 | case MIDI_PGM_CHANGE: |
| 558 | ev = SEQ_MK_CHN(PGM_CHANGE, .device=unit, .channel=chan, |
| 559 | .program=qi.qi_msg[1]); |
| 560 | break; |
| 561 | case MIDI_CHN_PRESSURE: |
| 562 | ev = SEQ_MK_CHN(CHN_PRESSURE, .device=unit, .channel=chan, |
| 563 | .pressure=qi.qi_msg[1]); |
| 564 | break; |
| 565 | case MIDI_PITCH_BEND: |
| 566 | ev = SEQ_MK_CHN(PITCH_BEND, .device=unit, .channel=chan, |
| 567 | .value=(qi.qi_msg[1] & 0x7f) | ((qi.qi_msg[2] & 0x7f) << 7)); |
| 568 | break; |
| 569 | default: /* this is now the point where MIDI_ACKs disappear */ |
| 570 | mutex_exit(&sc->lock); |
| 571 | return; |
| 572 | } |
| 573 | microtime(&now); |
| 574 | if (!sc->timer.running) |
| 575 | now = sc->timer.stoptime; |
| 576 | SUBTIMEVAL(&now, &sc->timer.reftime); |
| 577 | t = now.tv_sec * 1000000 + now.tv_usec; |
| 578 | t /= sc->timer.usperdiv; |
| 579 | t += sc->timer.divs_lastchange; |
| 580 | if (t != sc->input_stamp) { |
| 581 | seq_input_event(sc, &SEQ_MK_TIMING(WAIT_ABS, .divisions=t)); |
| 582 | sc->input_stamp = t; /* XXX what happens if timer is reset? */ |
| 583 | } |
| 584 | seq_input_event(sc, &ev); |
| 585 | mutex_exit(&sc->lock); |
| 586 | } |
| 587 | |
| 588 | static int |
| 589 | sequencerread(dev_t dev, struct uio *uio, int ioflag) |
| 590 | { |
| 591 | struct sequencer_softc *sc; |
| 592 | struct sequencer_queue *q; |
| 593 | seq_event_t ev; |
| 594 | int error; |
| 595 | |
| 596 | DPRINTFN(2, ("sequencerread: %" PRIx64", count=%d, ioflag=%x\n" , |
| 597 | dev, (int)uio->uio_resid, ioflag)); |
| 598 | |
| 599 | if ((error = sequencer_enter(dev, &sc)) != 0) |
| 600 | return error; |
| 601 | q = &sc->inq; |
| 602 | |
| 603 | if (sc->mode == SEQ_OLD) { |
| 604 | sequencer_exit(sc); |
| 605 | DPRINTFN(-1,("sequencerread: old read\n" )); |
| 606 | return EINVAL; /* XXX unimplemented */ |
| 607 | } |
| 608 | while (SEQ_QEMPTY(q)) { |
| 609 | if (ioflag & IO_NDELAY) { |
| 610 | error = EWOULDBLOCK; |
| 611 | break; |
| 612 | } |
| 613 | /* Drop lock to allow concurrent read/write. */ |
| 614 | KASSERT(sc->dvlock != 0); |
| 615 | sc->dvlock--; |
| 616 | error = cv_wait_sig(&sc->rchan, &sc->lock); |
| 617 | while (sc->dvlock != 0) { |
| 618 | cv_wait(&sc->lchan, &sc->lock); |
| 619 | } |
| 620 | sc->dvlock++; |
| 621 | if (error) { |
| 622 | break; |
| 623 | } |
| 624 | } |
| 625 | while (uio->uio_resid >= sizeof(ev) && !error && !SEQ_QEMPTY(q)) { |
| 626 | SEQ_QGET(q, ev); |
| 627 | mutex_exit(&sc->lock); |
| 628 | error = uiomove(&ev, sizeof(ev), uio); |
| 629 | mutex_enter(&sc->lock); |
| 630 | } |
| 631 | sequencer_exit(sc); |
| 632 | return error; |
| 633 | } |
| 634 | |
| 635 | static int |
| 636 | sequencerwrite(dev_t dev, struct uio *uio, int ioflag) |
| 637 | { |
| 638 | struct sequencer_softc *sc; |
| 639 | struct sequencer_queue *q; |
| 640 | int error; |
| 641 | seq_event_t cmdbuf; |
| 642 | int size; |
| 643 | |
| 644 | DPRINTFN(2, ("sequencerwrite: %" PRIx64", count=%d\n" , dev, |
| 645 | (int)uio->uio_resid)); |
| 646 | |
| 647 | if ((error = sequencer_enter(dev, &sc)) != 0) |
| 648 | return error; |
| 649 | q = &sc->outq; |
| 650 | |
| 651 | size = sc->mode == SEQ_NEW ? sizeof cmdbuf : SEQOLD_CMDSIZE; |
| 652 | while (uio->uio_resid >= size && error == 0) { |
| 653 | mutex_exit(&sc->lock); |
| 654 | error = uiomove(&cmdbuf, size, uio); |
| 655 | if (error == 0) { |
| 656 | if (sc->mode == SEQ_OLD && seq_to_new(&cmdbuf, uio)) { |
| 657 | mutex_enter(&sc->lock); |
| 658 | continue; |
| 659 | } |
| 660 | if (cmdbuf.tag == SEQ_FULLSIZE) { |
| 661 | /* We do it like OSS does, asynchronously */ |
| 662 | error = seq_do_fullsize(sc, &cmdbuf, uio); |
| 663 | if (error == 0) { |
| 664 | mutex_enter(&sc->lock); |
| 665 | continue; |
| 666 | } |
| 667 | } |
| 668 | } |
| 669 | mutex_enter(&sc->lock); |
| 670 | if (error != 0) { |
| 671 | break; |
| 672 | } |
| 673 | while (SEQ_QFULL(q)) { |
| 674 | seq_startoutput(sc); |
| 675 | if (SEQ_QFULL(q)) { |
| 676 | if (ioflag & IO_NDELAY) { |
| 677 | error = EWOULDBLOCK; |
| 678 | break; |
| 679 | } |
| 680 | error = cv_wait_sig(&sc->wchan, &sc->lock); |
| 681 | if (error) { |
| 682 | break; |
| 683 | } |
| 684 | } |
| 685 | } |
| 686 | if (error == 0) { |
| 687 | SEQ_QPUT(q, cmdbuf); |
| 688 | } |
| 689 | } |
| 690 | if (error == 0) { |
| 691 | seq_startoutput(sc); |
| 692 | } else { |
| 693 | DPRINTFN(2, ("sequencerwrite: error=%d\n" , error)); |
| 694 | } |
| 695 | sequencer_exit(sc); |
| 696 | return error; |
| 697 | } |
| 698 | |
| 699 | static int |
| 700 | sequencerioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) |
| 701 | { |
| 702 | struct sequencer_softc *sc; |
| 703 | struct synth_info *si; |
| 704 | struct midi_dev *md; |
| 705 | int devno, error, t; |
| 706 | struct timeval now; |
| 707 | u_long tx; |
| 708 | |
| 709 | DPRINTFN(2, ("sequencerioctl: %" PRIx64" cmd=0x%08lx\n" , dev, cmd)); |
| 710 | |
| 711 | if ((error = sequencer_enter(dev, &sc)) != 0) |
| 712 | return error; |
| 713 | switch (cmd) { |
| 714 | case FIONBIO: |
| 715 | /* All handled in the upper FS layer. */ |
| 716 | break; |
| 717 | |
| 718 | case FIOASYNC: |
| 719 | if (*(int *)addr) { |
| 720 | if (sc->async != 0) |
| 721 | return EBUSY; |
| 722 | sc->async = curproc->p_pid; |
| 723 | DPRINTF(("%s: FIOASYNC %d\n" , __func__, |
| 724 | sc->async)); |
| 725 | } else { |
| 726 | sc->async = 0; |
| 727 | } |
| 728 | break; |
| 729 | |
| 730 | case SEQUENCER_RESET: |
| 731 | seq_reset(sc); |
| 732 | break; |
| 733 | |
| 734 | case SEQUENCER_PANIC: |
| 735 | seq_reset(sc); |
| 736 | /* Do more? OSS doesn't */ |
| 737 | break; |
| 738 | |
| 739 | case SEQUENCER_SYNC: |
| 740 | if (sc->flags != FREAD) |
| 741 | seq_drain(sc); |
| 742 | break; |
| 743 | |
| 744 | case SEQUENCER_INFO: |
| 745 | si = (struct synth_info*)addr; |
| 746 | devno = si->device; |
| 747 | if (devno < 0 || devno >= sc->nmidi) { |
| 748 | error = EINVAL; |
| 749 | break; |
| 750 | } |
| 751 | md = sc->devs[devno]; |
| 752 | strncpy(si->name, md->name, sizeof si->name); |
| 753 | si->synth_type = SYNTH_TYPE_MIDI; |
| 754 | si->synth_subtype = md->subtype; |
| 755 | si->nr_voices = md->nr_voices; |
| 756 | si->instr_bank_size = md->instr_bank_size; |
| 757 | si->capabilities = md->capabilities; |
| 758 | break; |
| 759 | |
| 760 | case SEQUENCER_NRSYNTHS: |
| 761 | *(int *)addr = sc->nmidi; |
| 762 | break; |
| 763 | |
| 764 | case SEQUENCER_NRMIDIS: |
| 765 | *(int *)addr = sc->nmidi; |
| 766 | break; |
| 767 | |
| 768 | case SEQUENCER_OUTOFBAND: |
| 769 | DPRINTFN(3, ("sequencer_ioctl: OOB=%02x %02x %02x %02x %02x %02x %02x %02x\n" , |
| 770 | *(u_char *)addr, *((u_char *)addr+1), |
| 771 | *((u_char *)addr+2), *((u_char *)addr+3), |
| 772 | *((u_char *)addr+4), *((u_char *)addr+5), |
| 773 | *((u_char *)addr+6), *((u_char *)addr+7))); |
| 774 | if ((sc->flags & FWRITE) == 0) { |
| 775 | error = EBADF; |
| 776 | } else { |
| 777 | error = seq_do_command(sc, (seq_event_t *)addr); |
| 778 | } |
| 779 | break; |
| 780 | |
| 781 | case SEQUENCER_TMR_TIMEBASE: |
| 782 | t = *(int *)addr; |
| 783 | if (t < 1) |
| 784 | t = 1; |
| 785 | if (t > 10000) |
| 786 | t = 10000; |
| 787 | *(int *)addr = t; |
| 788 | sc->timer.timebase_divperbeat = t; |
| 789 | sc->timer.divs_lastchange = sc->timer.divs_lastevent; |
| 790 | microtime(&sc->timer.reftime); |
| 791 | RECALC_USPERDIV(&sc->timer); |
| 792 | break; |
| 793 | |
| 794 | case SEQUENCER_TMR_START: |
| 795 | error = seq_do_timing(sc, &SEQ_MK_TIMING(START)); |
| 796 | break; |
| 797 | |
| 798 | case SEQUENCER_TMR_STOP: |
| 799 | error = seq_do_timing(sc, &SEQ_MK_TIMING(STOP)); |
| 800 | break; |
| 801 | |
| 802 | case SEQUENCER_TMR_CONTINUE: |
| 803 | error = seq_do_timing(sc, &SEQ_MK_TIMING(CONTINUE)); |
| 804 | break; |
| 805 | |
| 806 | case SEQUENCER_TMR_TEMPO: |
| 807 | error = seq_do_timing(sc, |
| 808 | &SEQ_MK_TIMING(TEMPO, .bpm=*(int *)addr)); |
| 809 | RECALC_USPERDIV(&sc->timer); |
| 810 | if (error == 0) |
| 811 | *(int *)addr = sc->timer.tempo_beatpermin; |
| 812 | break; |
| 813 | |
| 814 | case SEQUENCER_TMR_SOURCE: |
| 815 | *(int *)addr = SEQUENCER_TMR_INTERNAL; |
| 816 | break; |
| 817 | |
| 818 | case SEQUENCER_TMR_METRONOME: |
| 819 | /* noop */ |
| 820 | break; |
| 821 | |
| 822 | case SEQUENCER_THRESHOLD: |
| 823 | t = SEQ_MAXQ - *(int *)addr / sizeof (seq_event_rec); |
| 824 | if (t < 1) |
| 825 | t = 1; |
| 826 | if (t > SEQ_MAXQ) |
| 827 | t = SEQ_MAXQ; |
| 828 | sc->lowat = t; |
| 829 | break; |
| 830 | |
| 831 | case SEQUENCER_CTRLRATE: |
| 832 | *(int *)addr = (sc->timer.tempo_beatpermin |
| 833 | *sc->timer.timebase_divperbeat + 30) / 60; |
| 834 | break; |
| 835 | |
| 836 | case SEQUENCER_GETTIME: |
| 837 | microtime(&now); |
| 838 | SUBTIMEVAL(&now, &sc->timer.reftime); |
| 839 | tx = now.tv_sec * 1000000 + now.tv_usec; |
| 840 | tx /= sc->timer.usperdiv; |
| 841 | tx += sc->timer.divs_lastchange; |
| 842 | *(int *)addr = tx; |
| 843 | break; |
| 844 | |
| 845 | default: |
| 846 | DPRINTFN(-1,("sequencer_ioctl: unimpl %08lx\n" , cmd)); |
| 847 | error = EINVAL; |
| 848 | break; |
| 849 | } |
| 850 | sequencer_exit(sc); |
| 851 | |
| 852 | return error; |
| 853 | } |
| 854 | |
| 855 | static int |
| 856 | sequencerpoll(dev_t dev, int events, struct lwp *l) |
| 857 | { |
| 858 | struct sequencer_softc *sc; |
| 859 | int revents = 0; |
| 860 | if ((sc = sequencerget(SEQUENCERUNIT(dev))) == NULL) |
| 861 | return ENXIO; |
| 862 | |
| 863 | DPRINTF(("%s: %p events=0x%x\n" , __func__, sc, events)); |
| 864 | |
| 865 | mutex_enter(&sc->lock); |
| 866 | if (events & (POLLIN | POLLRDNORM)) |
| 867 | if ((sc->flags&FREAD) && !SEQ_QEMPTY(&sc->inq)) |
| 868 | revents |= events & (POLLIN | POLLRDNORM); |
| 869 | |
| 870 | if (events & (POLLOUT | POLLWRNORM)) |
| 871 | if ((sc->flags&FWRITE) && SEQ_QLEN(&sc->outq) < sc->lowat) |
| 872 | revents |= events & (POLLOUT | POLLWRNORM); |
| 873 | |
| 874 | if (revents == 0) { |
| 875 | if ((sc->flags&FREAD) && (events & (POLLIN | POLLRDNORM))) |
| 876 | selrecord(l, &sc->rsel); |
| 877 | |
| 878 | if ((sc->flags&FWRITE) && (events & (POLLOUT | POLLWRNORM))) |
| 879 | selrecord(l, &sc->wsel); |
| 880 | } |
| 881 | mutex_exit(&sc->lock); |
| 882 | |
| 883 | return revents; |
| 884 | } |
| 885 | |
| 886 | static void |
| 887 | filt_sequencerrdetach(struct knote *kn) |
| 888 | { |
| 889 | struct sequencer_softc *sc = kn->kn_hook; |
| 890 | |
| 891 | mutex_enter(&sc->lock); |
| 892 | SLIST_REMOVE(&sc->rsel.sel_klist, kn, knote, kn_selnext); |
| 893 | mutex_exit(&sc->lock); |
| 894 | } |
| 895 | |
| 896 | static int |
| 897 | filt_sequencerread(struct knote *kn, long hint) |
| 898 | { |
| 899 | struct sequencer_softc *sc = kn->kn_hook; |
| 900 | int rv; |
| 901 | |
| 902 | if (hint != NOTE_SUBMIT) { |
| 903 | mutex_enter(&sc->lock); |
| 904 | } |
| 905 | if (SEQ_QEMPTY(&sc->inq)) { |
| 906 | rv = 0; |
| 907 | } else { |
| 908 | kn->kn_data = sizeof(seq_event_rec); |
| 909 | rv = 1; |
| 910 | } |
| 911 | if (hint != NOTE_SUBMIT) { |
| 912 | mutex_exit(&sc->lock); |
| 913 | } |
| 914 | return rv; |
| 915 | } |
| 916 | |
| 917 | static const struct filterops sequencerread_filtops = |
| 918 | { 1, NULL, filt_sequencerrdetach, filt_sequencerread }; |
| 919 | |
| 920 | static void |
| 921 | filt_sequencerwdetach(struct knote *kn) |
| 922 | { |
| 923 | struct sequencer_softc *sc = kn->kn_hook; |
| 924 | |
| 925 | mutex_enter(&sc->lock); |
| 926 | SLIST_REMOVE(&sc->wsel.sel_klist, kn, knote, kn_selnext); |
| 927 | mutex_exit(&sc->lock); |
| 928 | } |
| 929 | |
| 930 | static int |
| 931 | filt_sequencerwrite(struct knote *kn, long hint) |
| 932 | { |
| 933 | struct sequencer_softc *sc = kn->kn_hook; |
| 934 | int rv; |
| 935 | |
| 936 | if (hint != NOTE_SUBMIT) { |
| 937 | mutex_enter(&sc->lock); |
| 938 | } |
| 939 | if (SEQ_QLEN(&sc->outq) >= sc->lowat) { |
| 940 | rv = 0; |
| 941 | } else { |
| 942 | kn->kn_data = sizeof(seq_event_rec); |
| 943 | rv = 1; |
| 944 | } |
| 945 | if (hint != NOTE_SUBMIT) { |
| 946 | mutex_exit(&sc->lock); |
| 947 | } |
| 948 | return rv; |
| 949 | } |
| 950 | |
| 951 | static const struct filterops sequencerwrite_filtops = |
| 952 | { 1, NULL, filt_sequencerwdetach, filt_sequencerwrite }; |
| 953 | |
| 954 | static int |
| 955 | sequencerkqfilter(dev_t dev, struct knote *kn) |
| 956 | { |
| 957 | struct sequencer_softc *sc; |
| 958 | struct klist *klist; |
| 959 | if ((sc = sequencerget(SEQUENCERUNIT(dev))) == NULL) |
| 960 | return ENXIO; |
| 961 | |
| 962 | switch (kn->kn_filter) { |
| 963 | case EVFILT_READ: |
| 964 | klist = &sc->rsel.sel_klist; |
| 965 | kn->kn_fop = &sequencerread_filtops; |
| 966 | break; |
| 967 | |
| 968 | case EVFILT_WRITE: |
| 969 | klist = &sc->wsel.sel_klist; |
| 970 | kn->kn_fop = &sequencerwrite_filtops; |
| 971 | break; |
| 972 | |
| 973 | default: |
| 974 | return (EINVAL); |
| 975 | } |
| 976 | |
| 977 | kn->kn_hook = sc; |
| 978 | |
| 979 | mutex_enter(&sc->lock); |
| 980 | SLIST_INSERT_HEAD(klist, kn, kn_selnext); |
| 981 | mutex_exit(&sc->lock); |
| 982 | |
| 983 | return (0); |
| 984 | } |
| 985 | |
| 986 | static void |
| 987 | seq_reset(struct sequencer_softc *sc) |
| 988 | { |
| 989 | int i, chn; |
| 990 | struct midi_dev *md; |
| 991 | |
| 992 | KASSERT(mutex_owned(&sc->lock)); |
| 993 | |
| 994 | if (!(sc->flags & FWRITE)) |
| 995 | return; |
| 996 | for (i = 0; i < sc->nmidi; i++) { |
| 997 | md = sc->devs[i]; |
| 998 | midiseq_reset(md); |
| 999 | for (chn = 0; chn < MAXCHAN; chn++) { |
| 1000 | midiseq_ctlchange(md, chn, &SEQ_MK_CHN(CTL_CHANGE, |
| 1001 | .controller=MIDI_CTRL_NOTES_OFF)); |
| 1002 | midiseq_ctlchange(md, chn, &SEQ_MK_CHN(CTL_CHANGE, |
| 1003 | .controller=MIDI_CTRL_RESET)); |
| 1004 | midiseq_pitchbend(md, chn, &SEQ_MK_CHN(PITCH_BEND, |
| 1005 | .value=MIDI_BEND_NEUTRAL)); |
| 1006 | } |
| 1007 | } |
| 1008 | } |
| 1009 | |
| 1010 | static int |
| 1011 | seq_do_command(struct sequencer_softc *sc, seq_event_t *b) |
| 1012 | { |
| 1013 | int dev; |
| 1014 | |
| 1015 | KASSERT(mutex_owned(&sc->lock)); |
| 1016 | |
| 1017 | DPRINTFN(4, ("seq_do_command: %p cmd=0x%02x\n" , sc, b->timing.op)); |
| 1018 | |
| 1019 | switch(b->tag) { |
| 1020 | case SEQ_LOCAL: |
| 1021 | return seq_do_local(sc, b); |
| 1022 | case SEQ_TIMING: |
| 1023 | return seq_do_timing(sc, b); |
| 1024 | case SEQ_CHN_VOICE: |
| 1025 | return seq_do_chnvoice(sc, b); |
| 1026 | case SEQ_CHN_COMMON: |
| 1027 | return seq_do_chncommon(sc, b); |
| 1028 | case SEQ_SYSEX: |
| 1029 | return seq_do_sysex(sc, b); |
| 1030 | /* COMPAT */ |
| 1031 | case SEQOLD_MIDIPUTC: |
| 1032 | dev = b->putc.device; |
| 1033 | if (dev < 0 || dev >= sc->nmidi) |
| 1034 | return (ENXIO); |
| 1035 | return midiseq_out(sc->devs[dev], &b->putc.byte, 1, 0); |
| 1036 | default: |
| 1037 | DPRINTFN(-1,("seq_do_command: unimpl command %02x\n" , b->tag)); |
| 1038 | return (EINVAL); |
| 1039 | } |
| 1040 | } |
| 1041 | |
| 1042 | static int |
| 1043 | seq_do_chnvoice(struct sequencer_softc *sc, seq_event_t *b) |
| 1044 | { |
| 1045 | int dev; |
| 1046 | int error; |
| 1047 | struct midi_dev *md; |
| 1048 | |
| 1049 | KASSERT(mutex_owned(&sc->lock)); |
| 1050 | |
| 1051 | dev = b->voice.device; |
| 1052 | if (dev < 0 || dev >= sc->nmidi || |
| 1053 | b->voice.channel > 15 || |
| 1054 | b->voice.key >= SEQ_NOTE_MAX) |
| 1055 | return ENXIO; |
| 1056 | md = sc->devs[dev]; |
| 1057 | switch(b->voice.op) { |
| 1058 | case MIDI_NOTEON: /* no need to special-case hidden noteoff here */ |
| 1059 | error = midiseq_noteon(md, b->voice.channel, b->voice.key, b); |
| 1060 | break; |
| 1061 | case MIDI_NOTEOFF: |
| 1062 | error = midiseq_noteoff(md, b->voice.channel, b->voice.key, b); |
| 1063 | break; |
| 1064 | case MIDI_KEY_PRESSURE: |
| 1065 | error = midiseq_keypressure(md, |
| 1066 | b->voice.channel, b->voice.key, b); |
| 1067 | break; |
| 1068 | default: |
| 1069 | DPRINTFN(-1,("seq_do_chnvoice: unimpl command %02x\n" , |
| 1070 | b->voice.op)); |
| 1071 | error = EINVAL; |
| 1072 | break; |
| 1073 | } |
| 1074 | return error; |
| 1075 | } |
| 1076 | |
| 1077 | static int |
| 1078 | seq_do_chncommon(struct sequencer_softc *sc, seq_event_t *b) |
| 1079 | { |
| 1080 | int dev; |
| 1081 | int error; |
| 1082 | struct midi_dev *md; |
| 1083 | |
| 1084 | KASSERT(mutex_owned(&sc->lock)); |
| 1085 | |
| 1086 | dev = b->common.device; |
| 1087 | if (dev < 0 || dev >= sc->nmidi || |
| 1088 | b->common.channel > 15) |
| 1089 | return ENXIO; |
| 1090 | md = sc->devs[dev]; |
| 1091 | DPRINTFN(2,("seq_do_chncommon: %02x\n" , b->common.op)); |
| 1092 | |
| 1093 | error = 0; |
| 1094 | switch(b->common.op) { |
| 1095 | case MIDI_PGM_CHANGE: |
| 1096 | error = midiseq_pgmchange(md, b->common.channel, b); |
| 1097 | break; |
| 1098 | case MIDI_CTL_CHANGE: |
| 1099 | error = midiseq_ctlchange(md, b->common.channel, b); |
| 1100 | break; |
| 1101 | case MIDI_PITCH_BEND: |
| 1102 | error = midiseq_pitchbend(md, b->common.channel, b); |
| 1103 | break; |
| 1104 | case MIDI_CHN_PRESSURE: |
| 1105 | error = midiseq_chnpressure(md, b->common.channel, b); |
| 1106 | break; |
| 1107 | default: |
| 1108 | DPRINTFN(-1,("seq_do_chncommon: unimpl command %02x\n" , |
| 1109 | b->common.op)); |
| 1110 | error = EINVAL; |
| 1111 | break; |
| 1112 | } |
| 1113 | return error; |
| 1114 | } |
| 1115 | |
| 1116 | static int |
| 1117 | seq_do_local(struct sequencer_softc *sc, seq_event_t *b) |
| 1118 | { |
| 1119 | |
| 1120 | KASSERT(mutex_owned(&sc->lock)); |
| 1121 | |
| 1122 | return (EINVAL); |
| 1123 | } |
| 1124 | |
| 1125 | static int |
| 1126 | seq_do_sysex(struct sequencer_softc *sc, seq_event_t *b) |
| 1127 | { |
| 1128 | int dev, i; |
| 1129 | struct midi_dev *md; |
| 1130 | uint8_t *bf = b->sysex.buffer; |
| 1131 | |
| 1132 | KASSERT(mutex_owned(&sc->lock)); |
| 1133 | |
| 1134 | dev = b->sysex.device; |
| 1135 | if (dev < 0 || dev >= sc->nmidi) |
| 1136 | return (ENXIO); |
| 1137 | DPRINTF(("%s: dev=%d\n" , __func__, dev)); |
| 1138 | md = sc->devs[dev]; |
| 1139 | |
| 1140 | if (!md->doingsysex) { |
| 1141 | midiseq_out(md, (uint8_t[]){MIDI_SYSEX_START}, 1, 0); |
| 1142 | md->doingsysex = 1; |
| 1143 | } |
| 1144 | |
| 1145 | for (i = 0; i < 6 && bf[i] != 0xff; i++) |
| 1146 | ; |
| 1147 | midiseq_out(md, bf, i, 0); |
| 1148 | if (i < 6 || (i > 0 && bf[i-1] == MIDI_SYSEX_END)) |
| 1149 | md->doingsysex = 0; |
| 1150 | return 0; |
| 1151 | } |
| 1152 | |
| 1153 | static void |
| 1154 | seq_timer_waitabs(struct sequencer_softc *sc, uint32_t divs) |
| 1155 | { |
| 1156 | struct timeval when; |
| 1157 | long long usec; |
| 1158 | struct syn_timer *t; |
| 1159 | int ticks; |
| 1160 | |
| 1161 | KASSERT(mutex_owned(&sc->lock)); |
| 1162 | |
| 1163 | t = &sc->timer; |
| 1164 | t->divs_lastevent = divs; |
| 1165 | divs -= t->divs_lastchange; |
| 1166 | usec = (long long)divs * (long long)t->usperdiv; /* convert to usec */ |
| 1167 | when.tv_sec = usec / 1000000; |
| 1168 | when.tv_usec = usec % 1000000; |
| 1169 | DPRINTFN(4, ("seq_timer_waitabs: adjdivs=%d, sleep when=%" PRId64".%06" PRId64, |
| 1170 | divs, when.tv_sec, (uint64_t)when.tv_usec)); |
| 1171 | ADDTIMEVAL(&when, &t->reftime); /* abstime for end */ |
| 1172 | ticks = tvhzto(&when); |
| 1173 | DPRINTFN(4, (" when+start=%" PRId64".%06" PRId64", tick=%d\n" , |
| 1174 | when.tv_sec, (uint64_t)when.tv_usec, ticks)); |
| 1175 | if (ticks > 0) { |
| 1176 | #ifdef DIAGNOSTIC |
| 1177 | if (ticks > 20 * hz) { |
| 1178 | /* Waiting more than 20s */ |
| 1179 | printf("seq_timer_waitabs: funny ticks=%d, " |
| 1180 | "usec=%lld\n" , ticks, usec); |
| 1181 | } |
| 1182 | #endif |
| 1183 | sc->timeout = 1; |
| 1184 | callout_reset(&sc->sc_callout, ticks, |
| 1185 | seq_timeout, sc); |
| 1186 | } |
| 1187 | #ifdef SEQUENCER_DEBUG |
| 1188 | else if (tick < 0) |
| 1189 | DPRINTF(("%s: ticks = %d\n" , __func__, ticks)); |
| 1190 | #endif |
| 1191 | } |
| 1192 | |
| 1193 | static int |
| 1194 | seq_do_timing(struct sequencer_softc *sc, seq_event_t *b) |
| 1195 | { |
| 1196 | struct syn_timer *t = &sc->timer; |
| 1197 | struct timeval when; |
| 1198 | int error; |
| 1199 | |
| 1200 | KASSERT(mutex_owned(&sc->lock)); |
| 1201 | |
| 1202 | error = 0; |
| 1203 | switch(b->timing.op) { |
| 1204 | case TMR_WAIT_REL: |
| 1205 | seq_timer_waitabs(sc, |
| 1206 | b->t_WAIT_REL.divisions + t->divs_lastevent); |
| 1207 | break; |
| 1208 | case TMR_WAIT_ABS: |
| 1209 | seq_timer_waitabs(sc, b->t_WAIT_ABS.divisions); |
| 1210 | break; |
| 1211 | case TMR_START: |
| 1212 | microtime(&t->reftime); |
| 1213 | t->divs_lastevent = t->divs_lastchange = 0; |
| 1214 | t->running = 1; |
| 1215 | break; |
| 1216 | case TMR_STOP: |
| 1217 | microtime(&t->stoptime); |
| 1218 | t->running = 0; |
| 1219 | break; |
| 1220 | case TMR_CONTINUE: |
| 1221 | if (t->running) |
| 1222 | break; |
| 1223 | microtime(&when); |
| 1224 | SUBTIMEVAL(&when, &t->stoptime); |
| 1225 | ADDTIMEVAL(&t->reftime, &when); |
| 1226 | t->running = 1; |
| 1227 | break; |
| 1228 | case TMR_TEMPO: |
| 1229 | /* bpm is unambiguously MIDI clocks per minute / 24 */ |
| 1230 | /* (24 MIDI clocks are usually but not always a quarter note) */ |
| 1231 | if (b->t_TEMPO.bpm < 8) /* where are these limits specified? */ |
| 1232 | t->tempo_beatpermin = 8; |
| 1233 | else if (b->t_TEMPO.bpm > 360) /* ? */ |
| 1234 | t->tempo_beatpermin = 360; |
| 1235 | else |
| 1236 | t->tempo_beatpermin = b->t_TEMPO.bpm; |
| 1237 | t->divs_lastchange = t->divs_lastevent; |
| 1238 | microtime(&t->reftime); |
| 1239 | RECALC_USPERDIV(t); |
| 1240 | break; |
| 1241 | case TMR_ECHO: |
| 1242 | error = seq_input_event(sc, b); |
| 1243 | break; |
| 1244 | case TMR_RESET: |
| 1245 | t->divs_lastevent = t->divs_lastchange = 0; |
| 1246 | microtime(&t->reftime); |
| 1247 | break; |
| 1248 | case TMR_SPP: |
| 1249 | case TMR_TIMESIG: |
| 1250 | DPRINTF(("%s: unimplemented %02x\n" , __func__, b->timing.op)); |
| 1251 | error = EINVAL; /* not quite accurate... */ |
| 1252 | break; |
| 1253 | default: |
| 1254 | DPRINTF(("%s: unknown %02x\n" , __func__, b->timing.op)); |
| 1255 | error = EINVAL; |
| 1256 | break; |
| 1257 | } |
| 1258 | return (error); |
| 1259 | } |
| 1260 | |
| 1261 | static int |
| 1262 | seq_do_fullsize(struct sequencer_softc *sc, seq_event_t *b, struct uio *uio) |
| 1263 | { |
| 1264 | struct sysex_info sysex; |
| 1265 | u_int dev; |
| 1266 | |
| 1267 | #ifdef DIAGNOSTIC |
| 1268 | if (sizeof(seq_event_rec) != SEQ_SYSEX_HDRSIZE) { |
| 1269 | printf("seq_do_fullsize: sysex size ??\n" ); |
| 1270 | return EINVAL; |
| 1271 | } |
| 1272 | #endif |
| 1273 | memcpy(&sysex, b, sizeof sysex); |
| 1274 | dev = sysex.device_no; |
| 1275 | if (/* dev < 0 || */ dev >= sc->nmidi) |
| 1276 | return (ENXIO); |
| 1277 | DPRINTFN(2, ("seq_do_fullsize: fmt=%04x, dev=%d, len=%d\n" , |
| 1278 | sysex.key, dev, sysex.len)); |
| 1279 | return (midiseq_loadpatch(sc->devs[dev], &sysex, uio)); |
| 1280 | } |
| 1281 | |
| 1282 | /* |
| 1283 | * Convert an old sequencer event to a new one. |
| 1284 | * NOTE: on entry, *ev may contain valid data only in the first 4 bytes. |
| 1285 | * That may be true even on exit (!) in the case of SEQOLD_MIDIPUTC; the |
| 1286 | * caller will only look at the first bytes in that case anyway. Ugly? Sure. |
| 1287 | */ |
| 1288 | static int |
| 1289 | seq_to_new(seq_event_t *ev, struct uio *uio) |
| 1290 | { |
| 1291 | int cmd, chan, note, parm; |
| 1292 | uint32_t tmp_delay; |
| 1293 | int error; |
| 1294 | uint8_t *bfp; |
| 1295 | |
| 1296 | cmd = ev->tag; |
| 1297 | bfp = ev->unknown.byte; |
| 1298 | chan = *bfp++; |
| 1299 | note = *bfp++; |
| 1300 | parm = *bfp++; |
| 1301 | DPRINTFN(3, ("seq_to_new: 0x%02x %d %d %d\n" , cmd, chan, note, parm)); |
| 1302 | |
| 1303 | if (cmd >= 0x80) { |
| 1304 | /* Fill the event record */ |
| 1305 | if (uio->uio_resid >= sizeof *ev - SEQOLD_CMDSIZE) { |
| 1306 | error = uiomove(bfp, sizeof *ev - SEQOLD_CMDSIZE, uio); |
| 1307 | if (error) |
| 1308 | return error; |
| 1309 | } else |
| 1310 | return EINVAL; |
| 1311 | } |
| 1312 | |
| 1313 | switch(cmd) { |
| 1314 | case SEQOLD_NOTEOFF: |
| 1315 | /* |
| 1316 | * What's with the SEQ_NOTE_XXX? In OSS this seems to have |
| 1317 | * been undocumented magic for messing with the overall volume |
| 1318 | * of a 'voice', equated precariously with 'channel' and |
| 1319 | * pretty much unimplementable except by directly frobbing a |
| 1320 | * synth chip. For us, who treat everything as interfaced over |
| 1321 | * MIDI, this will just be unceremoniously discarded as |
| 1322 | * invalid in midiseq_noteoff, making the whole event an |
| 1323 | * elaborate no-op, and that doesn't seem to be any different |
| 1324 | * from what happens on linux with a MIDI-interfaced device, |
| 1325 | * by the way. The moral is ... use the new /dev/music API, ok? |
| 1326 | */ |
| 1327 | *ev = SEQ_MK_CHN(NOTEOFF, .device=0, .channel=chan, |
| 1328 | .key=SEQ_NOTE_XXX, .velocity=parm); |
| 1329 | break; |
| 1330 | case SEQOLD_NOTEON: |
| 1331 | *ev = SEQ_MK_CHN(NOTEON, |
| 1332 | .device=0, .channel=chan, .key=note, .velocity=parm); |
| 1333 | break; |
| 1334 | case SEQOLD_WAIT: |
| 1335 | /* |
| 1336 | * This event cannot even /exist/ on non-littleendian machines, |
| 1337 | * and so help me, that's exactly the way OSS defined it. |
| 1338 | * Also, the OSS programmer's guide states (p. 74, v1.11) |
| 1339 | * that seqold time units are system clock ticks, unlike |
| 1340 | * the new 'divisions' which are determined by timebase. In |
| 1341 | * that case we would need to do scaling here - but no such |
| 1342 | * behavior is visible in linux either--which also treats this |
| 1343 | * value, surprisingly, as an absolute, not relative, time. |
| 1344 | * My guess is that this event has gone unused so long that |
| 1345 | * nobody could agree we got it wrong no matter what we do. |
| 1346 | */ |
| 1347 | tmp_delay = *(uint32_t *)ev >> 8; |
| 1348 | *ev = SEQ_MK_TIMING(WAIT_ABS, .divisions=tmp_delay); |
| 1349 | break; |
| 1350 | case SEQOLD_SYNCTIMER: |
| 1351 | /* |
| 1352 | * The TMR_RESET event is not defined in any OSS materials |
| 1353 | * I can find; it may have been invented here just to provide |
| 1354 | * an accurate _to_new translation of this event. |
| 1355 | */ |
| 1356 | *ev = SEQ_MK_TIMING(RESET); |
| 1357 | break; |
| 1358 | case SEQOLD_PGMCHANGE: |
| 1359 | *ev = SEQ_MK_CHN(PGM_CHANGE, |
| 1360 | .device=0, .channel=chan, .program=note); |
| 1361 | break; |
| 1362 | case SEQOLD_MIDIPUTC: |
| 1363 | break; /* interpret in normal mode */ |
| 1364 | case SEQOLD_ECHO: |
| 1365 | case SEQOLD_PRIVATE: |
| 1366 | case SEQOLD_EXTENDED: |
| 1367 | default: |
| 1368 | DPRINTF(("%s: not impl 0x%02x\n" , __func__, cmd)); |
| 1369 | return EINVAL; |
| 1370 | /* In case new-style events show up */ |
| 1371 | case SEQ_TIMING: |
| 1372 | case SEQ_CHN_VOICE: |
| 1373 | case SEQ_CHN_COMMON: |
| 1374 | case SEQ_FULLSIZE: |
| 1375 | break; |
| 1376 | } |
| 1377 | return 0; |
| 1378 | } |
| 1379 | |
| 1380 | /**********************************************/ |
| 1381 | |
| 1382 | void |
| 1383 | midiseq_in(struct midi_dev *md, u_char *msg, int len) |
| 1384 | { |
| 1385 | struct sequencer_softc *sc; |
| 1386 | sequencer_pcqitem_t qi; |
| 1387 | |
| 1388 | DPRINTFN(2, ("midiseq_in: %p %02x %02x %02x\n" , |
| 1389 | md, msg[0], msg[1], msg[2])); |
| 1390 | |
| 1391 | sc = md->seq; |
| 1392 | |
| 1393 | qi.qi_msg[0] = msg[0]; |
| 1394 | qi.qi_msg[1] = msg[1]; |
| 1395 | qi.qi_msg[2] = msg[2]; |
| 1396 | qi.qi_msg[3] = md->unit | 0x80; /* ensure non-zero value of qi_ptr */ |
| 1397 | pcq_put(sc->pcq, qi.qi_ptr); |
| 1398 | softint_schedule(sc->sih); |
| 1399 | } |
| 1400 | |
| 1401 | static struct midi_dev * |
| 1402 | midiseq_open(int unit, int flags) |
| 1403 | { |
| 1404 | extern struct cfdriver midi_cd; |
| 1405 | int error; |
| 1406 | struct midi_dev *md; |
| 1407 | struct midi_softc *sc; |
| 1408 | struct midi_info mi; |
| 1409 | int major; |
| 1410 | dev_t dev; |
| 1411 | vnode_t *vp; |
| 1412 | int oflags; |
| 1413 | |
| 1414 | major = devsw_name2chr("midi" , NULL, 0); |
| 1415 | dev = makedev(major, unit); |
| 1416 | |
| 1417 | DPRINTFN(2, ("midiseq_open: %d %d\n" , unit, flags)); |
| 1418 | |
| 1419 | error = cdevvp(dev, &vp); |
| 1420 | if (error) |
| 1421 | return NULL; |
| 1422 | vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); |
| 1423 | error = VOP_OPEN(vp, flags, kauth_cred_get()); |
| 1424 | VOP_UNLOCK(vp); |
| 1425 | if (error) { |
| 1426 | vrele(vp); |
| 1427 | return NULL; |
| 1428 | } |
| 1429 | |
| 1430 | /* Only after we have acquired reference via VOP_OPEN(). */ |
| 1431 | midi_getinfo(dev, &mi); |
| 1432 | oflags = flags; |
| 1433 | if ((mi.props & MIDI_PROP_CAN_INPUT) == 0) |
| 1434 | flags &= ~FREAD; |
| 1435 | if ((flags & (FREAD|FWRITE)) == 0) { |
| 1436 | VOP_CLOSE(vp, oflags, kauth_cred_get()); |
| 1437 | vrele(vp); |
| 1438 | return NULL; |
| 1439 | } |
| 1440 | |
| 1441 | sc = device_lookup_private(&midi_cd, unit); |
| 1442 | md = kmem_zalloc(sizeof(*md), KM_SLEEP); |
| 1443 | md->unit = unit; |
| 1444 | md->name = mi.name; |
| 1445 | md->subtype = 0; |
| 1446 | md->nr_voices = 128; /* XXX */ |
| 1447 | md->instr_bank_size = 128; /* XXX */ |
| 1448 | md->vp = vp; |
| 1449 | if (mi.props & MIDI_PROP_CAN_INPUT) |
| 1450 | md->capabilities |= SYNTH_CAP_INPUT; |
| 1451 | sc->seq_md = md; |
| 1452 | return (md); |
| 1453 | } |
| 1454 | |
| 1455 | static void |
| 1456 | midiseq_close(struct midi_dev *md) |
| 1457 | { |
| 1458 | DPRINTFN(2, ("midiseq_close: %d\n" , md->unit)); |
| 1459 | (void)vn_close(md->vp, 0, kauth_cred_get()); |
| 1460 | kmem_free(md, sizeof(*md)); |
| 1461 | } |
| 1462 | |
| 1463 | static void |
| 1464 | midiseq_reset(struct midi_dev *md) |
| 1465 | { |
| 1466 | /* XXX send GM reset? */ |
| 1467 | DPRINTFN(3, ("midiseq_reset: %d\n" , md->unit)); |
| 1468 | } |
| 1469 | |
| 1470 | static int |
| 1471 | midiseq_out(struct midi_dev *md, u_char *bf, u_int cc, int chk) |
| 1472 | { |
| 1473 | DPRINTFN(5, ("midiseq_out: md=%p, unit=%d, bf[0]=0x%02x, cc=%d\n" , |
| 1474 | md, md->unit, bf[0], cc)); |
| 1475 | |
| 1476 | /* midi(4) does running status compression where appropriate. */ |
| 1477 | return midi_writebytes(md->unit, bf, cc); |
| 1478 | } |
| 1479 | |
| 1480 | /* |
| 1481 | * If the writing process hands us a hidden note-off in a note-on event, |
| 1482 | * we will simply write it that way; no need to special case it here, |
| 1483 | * as midi(4) will always canonicalize or compress as appropriate anyway. |
| 1484 | */ |
| 1485 | static int |
| 1486 | midiseq_noteon(struct midi_dev *md, int chan, int key, seq_event_t *ev) |
| 1487 | { |
| 1488 | return midiseq_out(md, (uint8_t[]){ |
| 1489 | MIDI_NOTEON | chan, key, ev->c_NOTEON.velocity & 0x7f}, 3, 1); |
| 1490 | } |
| 1491 | |
| 1492 | static int |
| 1493 | midiseq_noteoff(struct midi_dev *md, int chan, int key, seq_event_t *ev) |
| 1494 | { |
| 1495 | return midiseq_out(md, (uint8_t[]){ |
| 1496 | MIDI_NOTEOFF | chan, key, ev->c_NOTEOFF.velocity & 0x7f}, 3, 1); |
| 1497 | } |
| 1498 | |
| 1499 | static int |
| 1500 | midiseq_keypressure(struct midi_dev *md, int chan, int key, seq_event_t *ev) |
| 1501 | { |
| 1502 | return midiseq_out(md, (uint8_t[]){ |
| 1503 | MIDI_KEY_PRESSURE | chan, key, |
| 1504 | ev->c_KEY_PRESSURE.pressure & 0x7f}, 3, 1); |
| 1505 | } |
| 1506 | |
| 1507 | static int |
| 1508 | midiseq_pgmchange(struct midi_dev *md, int chan, seq_event_t *ev) |
| 1509 | { |
| 1510 | if (ev->c_PGM_CHANGE.program > 127) |
| 1511 | return EINVAL; |
| 1512 | return midiseq_out(md, (uint8_t[]){ |
| 1513 | MIDI_PGM_CHANGE | chan, ev->c_PGM_CHANGE.program}, 2, 1); |
| 1514 | } |
| 1515 | |
| 1516 | static int |
| 1517 | midiseq_chnpressure(struct midi_dev *md, int chan, seq_event_t *ev) |
| 1518 | { |
| 1519 | if (ev->c_CHN_PRESSURE.pressure > 127) |
| 1520 | return EINVAL; |
| 1521 | return midiseq_out(md, (uint8_t[]){ |
| 1522 | MIDI_CHN_PRESSURE | chan, ev->c_CHN_PRESSURE.pressure}, 2, 1); |
| 1523 | } |
| 1524 | |
| 1525 | static int |
| 1526 | midiseq_ctlchange(struct midi_dev *md, int chan, seq_event_t *ev) |
| 1527 | { |
| 1528 | if (ev->c_CTL_CHANGE.controller > 127) |
| 1529 | return EINVAL; |
| 1530 | return midiseq_out( md, (uint8_t[]){ |
| 1531 | MIDI_CTL_CHANGE | chan, ev->c_CTL_CHANGE.controller, |
| 1532 | ev->c_CTL_CHANGE.value & 0x7f /* XXX this is SO wrong */ |
| 1533 | }, 3, 1); |
| 1534 | } |
| 1535 | |
| 1536 | static int |
| 1537 | midiseq_pitchbend(struct midi_dev *md, int chan, seq_event_t *ev) |
| 1538 | { |
| 1539 | return midiseq_out(md, (uint8_t[]){ |
| 1540 | MIDI_PITCH_BEND | chan, |
| 1541 | ev->c_PITCH_BEND.value & 0x7f, |
| 1542 | (ev->c_PITCH_BEND.value >> 7) & 0x7f}, 3, 1); |
| 1543 | } |
| 1544 | |
| 1545 | static int |
| 1546 | midiseq_loadpatch(struct midi_dev *md, |
| 1547 | struct sysex_info *sysex, struct uio *uio) |
| 1548 | { |
| 1549 | struct sequencer_softc *sc; |
| 1550 | u_char c, bf[128]; |
| 1551 | int i, cc, error; |
| 1552 | |
| 1553 | if (sysex->key != SEQ_SYSEX_PATCH) { |
| 1554 | DPRINTFN(-1,("midiseq_loadpatch: bad patch key 0x%04x\n" , |
| 1555 | sysex->key)); |
| 1556 | return (EINVAL); |
| 1557 | } |
| 1558 | if (uio->uio_resid < sysex->len) |
| 1559 | /* adjust length, should be an error */ |
| 1560 | sysex->len = uio->uio_resid; |
| 1561 | |
| 1562 | DPRINTFN(2, ("midiseq_loadpatch: len=%d\n" , sysex->len)); |
| 1563 | if (sysex->len == 0) |
| 1564 | return EINVAL; |
| 1565 | error = uiomove(&c, 1, uio); |
| 1566 | if (error) |
| 1567 | return error; |
| 1568 | if (c != MIDI_SYSEX_START) /* must start like this */ |
| 1569 | return EINVAL; |
| 1570 | sc = md->seq; |
| 1571 | mutex_enter(&sc->lock); |
| 1572 | error = midiseq_out(md, &c, 1, 0); |
| 1573 | mutex_exit(&sc->lock); |
| 1574 | if (error) |
| 1575 | return error; |
| 1576 | --sysex->len; |
| 1577 | while (sysex->len > 0) { |
| 1578 | cc = sysex->len; |
| 1579 | if (cc > sizeof bf) |
| 1580 | cc = sizeof bf; |
| 1581 | error = uiomove(bf, cc, uio); |
| 1582 | if (error) |
| 1583 | break; |
| 1584 | for(i = 0; i < cc && !MIDI_IS_STATUS(bf[i]); i++) |
| 1585 | ; |
| 1586 | /* |
| 1587 | * XXX midi(4)'s buffer might not accommodate this, and the |
| 1588 | * function will not block us (though in this case we have |
| 1589 | * a process and could in principle block). |
| 1590 | */ |
| 1591 | mutex_enter(&sc->lock); |
| 1592 | error = midiseq_out(md, bf, i, 0); |
| 1593 | mutex_exit(&sc->lock); |
| 1594 | if (error) |
| 1595 | break; |
| 1596 | sysex->len -= i; |
| 1597 | if (i != cc) |
| 1598 | break; |
| 1599 | } |
| 1600 | /* |
| 1601 | * Any leftover data in uio is rubbish; |
| 1602 | * the SYSEX should be one write ending in SYSEX_END. |
| 1603 | */ |
| 1604 | uio->uio_resid = 0; |
| 1605 | c = MIDI_SYSEX_END; |
| 1606 | mutex_enter(&sc->lock); |
| 1607 | error = midiseq_out(md, &c, 1, 0); |
| 1608 | mutex_exit(&sc->lock); |
| 1609 | return error; |
| 1610 | } |
| 1611 | |
| 1612 | #include "midi.h" |
| 1613 | #if NMIDI == 0 |
| 1614 | static dev_type_open(midiopen); |
| 1615 | static dev_type_close(midiclose); |
| 1616 | |
| 1617 | const struct cdevsw midi_cdevsw = { |
| 1618 | .d_open = midiopen, |
| 1619 | .d_close = midiclose, |
| 1620 | .d_read = noread, |
| 1621 | .d_write = nowrite, |
| 1622 | .d_ioctl = noioctl, |
| 1623 | .d_stop = nostop, |
| 1624 | .d_tty = notty, |
| 1625 | .d_poll = nopoll, |
| 1626 | .d_mmap = nommap, |
| 1627 | .d_kqfilter = nokqfilter, |
| 1628 | .d_discard = nodiscard, |
| 1629 | .d_flag = D_OTHER | D_MPSAFE |
| 1630 | }; |
| 1631 | |
| 1632 | /* |
| 1633 | * If someone has a sequencer, but no midi devices there will |
| 1634 | * be unresolved references, so we provide little stubs. |
| 1635 | */ |
| 1636 | |
| 1637 | int |
| 1638 | midi_unit_count(void) |
| 1639 | { |
| 1640 | return (0); |
| 1641 | } |
| 1642 | |
| 1643 | static int |
| 1644 | midiopen(dev_t dev, int flags, int ifmt, struct lwp *l) |
| 1645 | { |
| 1646 | return (ENXIO); |
| 1647 | } |
| 1648 | |
| 1649 | struct cfdriver midi_cd; |
| 1650 | |
| 1651 | void |
| 1652 | midi_getinfo(dev_t dev, struct midi_info *mi) |
| 1653 | { |
| 1654 | mi->name = "Dummy MIDI device" ; |
| 1655 | mi->props = 0; |
| 1656 | } |
| 1657 | |
| 1658 | static int |
| 1659 | midiclose(dev_t dev, int flags, int ifmt, struct lwp *l) |
| 1660 | { |
| 1661 | return (ENXIO); |
| 1662 | } |
| 1663 | |
| 1664 | int |
| 1665 | midi_writebytes(int unit, u_char *bf, int cc) |
| 1666 | { |
| 1667 | return (ENXIO); |
| 1668 | } |
| 1669 | #endif /* NMIDI == 0 */ |
| 1670 | |