1 /* $NetBSD: opl.c,v 1.44 2023/05/10 21:30:50 riastradh 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 (at) 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 * The OPL3 (YMF262) manual can be found at 34 * ftp://ftp.yamahayst.com/Fax_Back_Doc/sound/YMF262.PDF 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: opl.c,v 1.44 2023/05/10 21:30:50 riastradh Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/errno.h> 43 #include <sys/ioctl.h> 44 #include <sys/syslog.h> 45 #include <sys/device.h> 46 #include <sys/select.h> 47 #include <sys/kmem.h> 48 49 #include <sys/cpu.h> 50 #include <sys/bus.h> 51 52 #include <sys/audioio.h> 53 #include <sys/midiio.h> 54 #include <dev/audio/audio_if.h> 55 56 #include <dev/midi_if.h> 57 #include <dev/midivar.h> 58 #include <dev/midisynvar.h> 59 60 #include <dev/ic/oplreg.h> 61 #include <dev/ic/oplvar.h> 62 63 #ifdef AUDIO_DEBUG 64 #define DPRINTF(x) if (opldebug) printf x 65 #define DPRINTFN(n,x) if (opldebug >= (n)) printf x 66 int opldebug = 0; 67 #else 68 #define DPRINTF(x) 69 #define DPRINTFN(n,x) 70 #endif 71 72 struct real_voice { 73 u_int8_t voice_num; 74 u_int8_t voice_mode; /* 0=unavailable, 2=2 OP, 4=4 OP */ 75 u_int8_t iooffs; /* I/O port (left or right side) */ 76 u_int8_t op[4]; /* Operator offsets */ 77 }; 78 79 const struct opl_voice voicetab[] = { 80 /* No I/O offs OP1 OP2 OP3 OP4 */ 81 /* --------------------------------------------- */ 82 { 0, OPL_L, {0x00, 0x03, 0x08, 0x0b}, NULL, 0, }, 83 { 1, OPL_L, {0x01, 0x04, 0x09, 0x0c}, NULL, 0, }, 84 { 2, OPL_L, {0x02, 0x05, 0x0a, 0x0d}, NULL, 0, }, 85 86 { 3, OPL_L, {0x08, 0x0b, 0x00, 0x00}, NULL, 0, }, 87 { 4, OPL_L, {0x09, 0x0c, 0x00, 0x00}, NULL, 0, }, 88 { 5, OPL_L, {0x0a, 0x0d, 0x00, 0x00}, NULL, 0, }, 89 90 { 6, OPL_L, {0x10, 0x13, 0x00, 0x00}, NULL, 0, }, 91 { 7, OPL_L, {0x11, 0x14, 0x00, 0x00}, NULL, 0, }, 92 { 8, OPL_L, {0x12, 0x15, 0x00, 0x00}, NULL, 0, }, 93 94 { 0, OPL_R, {0x00, 0x03, 0x08, 0x0b}, NULL, 0, }, 95 { 1, OPL_R, {0x01, 0x04, 0x09, 0x0c}, NULL, 0, }, 96 { 2, OPL_R, {0x02, 0x05, 0x0a, 0x0d}, NULL, 0, }, 97 { 3, OPL_R, {0x08, 0x0b, 0x00, 0x00}, NULL, 0, }, 98 { 4, OPL_R, {0x09, 0x0c, 0x00, 0x00}, NULL, 0, }, 99 { 5, OPL_R, {0x0a, 0x0d, 0x00, 0x00}, NULL, 0, }, 100 101 { 6, OPL_R, {0x10, 0x13, 0x00, 0x00}, NULL, 0, }, 102 { 7, OPL_R, {0x11, 0x14, 0x00, 0x00}, NULL, 0, }, 103 { 8, OPL_R, {0x12, 0x15, 0x00, 0x00}, NULL, 0, } 104 }; 105 106 static void opl_command(struct opl_softc *, int, int, int); 107 void opl_reset(struct opl_softc *); 108 void opl_freq_to_fnum (int freq, int *block, int *fnum); 109 110 int oplsyn_open(midisyn *ms, int); 111 void oplsyn_close(midisyn *); 112 void oplsyn_reset(void *); 113 void oplsyn_attackv(midisyn *, uint_fast16_t, midipitch_t, int16_t); 114 static void oplsyn_repitchv(midisyn *, uint_fast16_t, midipitch_t); 115 static void oplsyn_relevelv(midisyn *, uint_fast16_t, int16_t); 116 static void oplsyn_setv(midisyn *, uint_fast16_t, midipitch_t, int16_t, int); 117 void oplsyn_releasev(midisyn *, uint_fast16_t, uint_fast8_t); 118 int oplsyn_ctlnotice(midisyn *, midictl_evt, uint_fast8_t, uint_fast16_t); 119 void oplsyn_programchange(midisyn *, uint_fast8_t, uint_fast8_t); 120 void oplsyn_loadpatch(midisyn *, struct sysex_info *, struct uio *); 121 static void oplsyn_panhandler(midisyn *, uint_fast8_t); 122 123 void opl_set_op_reg(struct opl_softc *, int, int, int, u_char); 124 void opl_set_ch_reg(struct opl_softc *, int, int, u_char); 125 void opl_load_patch(struct opl_softc *, int); 126 u_int32_t opl_get_block_fnum(midipitch_t mp); 127 int opl_calc_vol(int regbyte, int16_t level_cB); 128 129 struct midisyn_methods opl3_midi = { 130 .open = oplsyn_open, 131 .close = oplsyn_close, 132 .attackv = oplsyn_attackv, 133 .repitchv = oplsyn_repitchv, 134 .relevelv = oplsyn_relevelv, 135 .releasev = oplsyn_releasev, 136 .pgmchg = oplsyn_programchange, 137 .ctlnotice = oplsyn_ctlnotice, 138 }; 139 140 void 141 opl_attach(struct opl_softc *sc) 142 { 143 int i; 144 145 KASSERT(sc->dev != NULL); 146 KASSERT(sc->lock != NULL); 147 148 mutex_enter(sc->lock); 149 i = opl_find(sc); 150 mutex_exit(sc->lock); 151 if (i == 0) { 152 aprint_error("\nopl: find failed\n"); 153 return; 154 } 155 156 mutex_enter(sc->lock); 157 opl_reset(sc); 158 mutex_exit(sc->lock); 159 160 sc->syn.mets = &opl3_midi; 161 size_t len = strlen(sc->syn.name); 162 snprintf(sc->syn.name + len, sizeof(sc->syn.name) - len, 163 "Yamaha OPL%d", sc->model); 164 sc->syn.data = sc; 165 sc->syn.nvoice = sc->model == OPL_2 ? OPL2_NVOICE : OPL3_NVOICE; 166 sc->syn.lock = sc->lock; 167 midisyn_init(&sc->syn); 168 169 /* Set up voice table */ 170 for (i = 0; i < OPL3_NVOICE; i++) 171 sc->voices[i] = voicetab[i]; 172 173 aprint_normal(": model OPL%d", sc->model); 174 175 /* Set up panpot */ 176 sc->panl = OPL_VOICE_TO_LEFT; 177 sc->panr = OPL_VOICE_TO_RIGHT; 178 if (sc->model == OPL_3 && 179 device_cfdata(sc->dev)->cf_flags & OPL_FLAGS_SWAP_LR) { 180 sc->panl = OPL_VOICE_TO_RIGHT; 181 sc->panr = OPL_VOICE_TO_LEFT; 182 aprint_normal(": LR swapped"); 183 } 184 185 aprint_normal("\n"); 186 aprint_naive("\n"); 187 188 sc->sc_mididev = 189 midi_attach_mi(&midisyn_hw_if, &sc->syn, sc->dev); 190 } 191 192 int 193 opl_detach(struct opl_softc *sc, int flags) 194 { 195 int error; 196 197 error = config_detach_children(sc->dev, flags); 198 if (error) 199 return error; 200 201 return 0; 202 } 203 204 static void 205 opl_command(struct opl_softc *sc, int offs, int addr, int data) 206 { 207 DPRINTFN(4, ("opl_command: sc=%p, offs=%d addr=0x%02x data=0x%02x\n", 208 sc, offs, addr, data)); 209 210 KASSERT(!sc->lock || mutex_owned(sc->lock)); 211 212 offs += sc->offs; 213 bus_space_write_1(sc->iot, sc->ioh, OPL_ADDR+offs, addr); 214 if (sc->model == OPL_2) 215 delay(10); 216 else 217 delay(6); 218 bus_space_write_1(sc->iot, sc->ioh, OPL_DATA+offs, data); 219 if (sc->model == OPL_2) 220 delay(30); 221 else 222 delay(6); 223 } 224 225 int 226 opl_match(bus_space_tag_t iot, bus_space_handle_t ioh, int offs) 227 { 228 struct opl_softc *sc; 229 int rv; 230 231 sc = kmem_zalloc(sizeof(*sc), KM_SLEEP); 232 sc->iot = iot; 233 sc->ioh = ioh; 234 sc->offs = offs; 235 rv = opl_find(sc); 236 kmem_free(sc, sizeof(*sc)); 237 return rv; 238 } 239 240 int 241 opl_find(struct opl_softc *sc) 242 { 243 u_int8_t status1, status2; 244 245 DPRINTFN(2,("opl_find: ioh=0x%x\n", (int)sc->ioh)); 246 sc->model = OPL_2; /* worst case assumption */ 247 248 /* Reset timers 1 and 2 */ 249 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, 250 OPL_TIMER1_MASK | OPL_TIMER2_MASK); 251 /* Reset the IRQ of the FM chip */ 252 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, OPL_IRQ_RESET); 253 254 /* get status bits */ 255 status1 = bus_space_read_1(sc->iot,sc->ioh,OPL_STATUS+OPL_L+sc->offs); 256 257 opl_command(sc, OPL_L, OPL_TIMER1, -2); /* wait 2 ticks */ 258 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, /* start timer1 */ 259 OPL_TIMER1_START | OPL_TIMER2_MASK); 260 delay(1000); /* wait for timer to expire */ 261 262 /* get status bits again */ 263 status2 = bus_space_read_1(sc->iot,sc->ioh,OPL_STATUS+OPL_L+sc->offs); 264 265 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, 266 OPL_TIMER1_MASK | OPL_TIMER2_MASK); 267 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, OPL_IRQ_RESET); 268 269 DPRINTFN(2,("opl_find: %02x %02x\n", status1, status2)); 270 271 if ((status1 & OPL_STATUS_MASK) != 0 || 272 (status2 & OPL_STATUS_MASK) != (OPL_STATUS_IRQ | OPL_STATUS_FT1)) 273 return (0); 274 275 switch(status1) { 276 case 0x00: 277 case 0x0f: 278 sc->model = OPL_3; 279 break; 280 case 0x06: 281 sc->model = OPL_2; 282 break; 283 default: 284 return (0); 285 } 286 287 DPRINTFN(2,("opl_find: OPL%d at 0x%x detected\n", 288 sc->model, (int)sc->ioh)); 289 return (1); 290 } 291 292 /* 293 * idea: opl_command does a lot of busywaiting, and the driver typically sets 294 * a lot of registers each time a voice-attack happens. some kind of 295 * caching to remember what was last written to each register could save 296 * a lot of cpu. It would have to be smart enough not to interfere with 297 * any necessary sequences of register access expected by the hardware... 298 */ 299 void 300 opl_set_op_reg(struct opl_softc *sc, int base, int voice, int op, u_char value) 301 { 302 struct opl_voice *v = &sc->voices[voice]; 303 304 KASSERT(mutex_owned(sc->lock)); 305 306 opl_command(sc, v->iooffs, base + v->op[op], value); 307 } 308 309 void 310 opl_set_ch_reg(struct opl_softc *sc, int base, int voice, u_char value) 311 { 312 struct opl_voice *v = &sc->voices[voice]; 313 314 KASSERT(mutex_owned(sc->lock)); 315 316 opl_command(sc, v->iooffs, base + v->voiceno, value); 317 } 318 319 320 void 321 opl_load_patch(struct opl_softc *sc, int v) 322 { 323 const struct opl_operators *p = sc->voices[v].patch; 324 325 KASSERT(mutex_owned(sc->lock)); 326 327 opl_set_op_reg(sc, OPL_AM_VIB, v, 0, p->ops[OO_CHARS+0]); 328 opl_set_op_reg(sc, OPL_AM_VIB, v, 1, p->ops[OO_CHARS+1]); 329 opl_set_op_reg(sc, OPL_KSL_LEVEL, v, 0, p->ops[OO_KSL_LEV+0]); 330 opl_set_op_reg(sc, OPL_KSL_LEVEL, v, 1, p->ops[OO_KSL_LEV+1]); 331 opl_set_op_reg(sc, OPL_ATTACK_DECAY, v, 0, p->ops[OO_ATT_DEC+0]); 332 opl_set_op_reg(sc, OPL_ATTACK_DECAY, v, 1, p->ops[OO_ATT_DEC+1]); 333 opl_set_op_reg(sc, OPL_SUSTAIN_RELEASE, v, 0, p->ops[OO_SUS_REL+0]); 334 opl_set_op_reg(sc, OPL_SUSTAIN_RELEASE, v, 1, p->ops[OO_SUS_REL+1]); 335 opl_set_op_reg(sc, OPL_WAVE_SELECT, v, 0, p->ops[OO_WAV_SEL+0]); 336 opl_set_op_reg(sc, OPL_WAVE_SELECT, v, 1, p->ops[OO_WAV_SEL+1]); 337 opl_set_ch_reg(sc, OPL_FEEDBACK_CONNECTION, v, p->ops[OO_FB_CONN]); 338 } 339 340 uint32_t 341 opl_get_block_fnum(midipitch_t mp) 342 { 343 midihz18_t hz18; 344 uint32_t block; 345 uint32_t f_num; 346 347 /* 348 * We can get to about note 30 before needing to switch from block 0. 349 * Thereafter, switch block every octave; that will keep f_num in the 350 * upper end of its range, making the most bits available for 351 * resolution. 352 */ 353 block = ( mp - MIDIPITCH_FROM_KEY(19) ) / MIDIPITCH_OCTAVE; 354 if ( block > 7 ) /* subtract wrapped */ 355 block = 0; 356 /* 357 * Could subtract block*MIDIPITCH_OCTAVE here, or >>block later. Later. 358 */ 359 360 hz18 = MIDIPITCH_TO_HZ18(mp); 361 hz18 >>= block; 362 363 /* 364 * The formula in the manual is f_num = ((hz<<19)/fs)>>(block-1) (though 365 * block==0 implies >>-1 which is a C unspecified result). As we already 366 * have hz<<18 and I omitted the -1 when shifting above, what's left to 367 * do now is multiply by 4 and divide by fs, the sampling frequency of 368 * the chip. fs is the master clock frequency fM / 288, fM is 14.32 MHz 369 * so fs is a goofy number around 49.7kHz. The 5th convergent of the 370 * continued fraction matches 4/fs to 9+ significant figures. Doing the 371 * shift first (above) ensures there's room in hz18 to multiply by 9. 372 */ 373 374 f_num = (9 * hz18) / 111875; 375 return ((block << 10) | f_num); 376 } 377 378 379 void 380 opl_reset(struct opl_softc *sc) 381 { 382 int i; 383 384 KASSERT(mutex_owned(sc->lock)); 385 386 for (i = 1; i <= OPL_MAXREG; i++) 387 opl_command(sc, OPL_L, OPL_KEYON_BLOCK + i, 0); 388 389 opl_command(sc, OPL_L, OPL_TEST, OPL_ENABLE_WAVE_SELECT); 390 opl_command(sc, OPL_L, OPL_PERCUSSION, 0); 391 if (sc->model == OPL_3) { 392 opl_command(sc, OPL_R, OPL_MODE, OPL3_ENABLE); 393 opl_command(sc, OPL_R,OPL_CONNECTION_SELECT,OPL_NOCONNECTION); 394 } 395 396 for (i = 0; i < MIDI_MAX_CHANS; i++) 397 sc->pan[i] = OPL_VOICE_TO_LEFT | OPL_VOICE_TO_RIGHT; 398 } 399 400 int 401 oplsyn_open(midisyn *ms, int flags) 402 { 403 struct opl_softc *sc = ms->data; 404 405 KASSERT(mutex_owned(sc->lock)); 406 407 DPRINTFN(2, ("oplsyn_open: %d\n", flags)); 408 409 #ifndef AUDIO_NO_POWER_CTL 410 if (sc->powerctl) 411 sc->powerctl(sc->powerarg, 1); 412 #endif 413 opl_reset(ms->data); 414 if (sc->spkrctl) 415 sc->spkrctl(sc->spkrarg, 1); 416 return (0); 417 } 418 419 void 420 oplsyn_close(midisyn *ms) 421 { 422 struct opl_softc *sc = ms->data; 423 424 DPRINTFN(2, ("oplsyn_close:\n")); 425 426 KASSERT(mutex_owned(sc->lock)); 427 428 /*opl_reset(ms->data);*/ 429 if (sc->spkrctl) 430 sc->spkrctl(sc->spkrarg, 0); 431 #ifndef AUDIO_NO_POWER_CTL 432 if (sc->powerctl) 433 sc->powerctl(sc->powerarg, 0); 434 #endif 435 } 436 437 #if 0 438 void 439 oplsyn_getinfo(void *addr, struct synth_dev *sd) 440 { 441 struct opl_softc *sc = addr; 442 443 sd->name = sc->model == OPL_2 ? "Yamaha OPL2" : "Yamaha OPL3"; 444 sd->type = SYNTH_TYPE_FM; 445 sd->subtype = sc->model == OPL_2 ? SYNTH_SUB_FM_TYPE_ADLIB 446 : SYNTH_SUB_FM_TYPE_OPL3; 447 sd->capabilities = 0; 448 } 449 #endif 450 451 void 452 oplsyn_reset(void *addr) 453 { 454 struct opl_softc *sc = addr; 455 456 KASSERT(mutex_owned(sc->lock)); 457 458 DPRINTFN(3, ("oplsyn_reset:\n")); 459 opl_reset(sc); 460 } 461 462 int 463 opl_calc_vol(int regbyte, int16_t level_cB) 464 { 465 int level = regbyte & OPL_TOTAL_LEVEL_MASK; 466 467 /* 468 * level is a six-bit attenuation, from 0 (full output) 469 * to -48dB (but without the minus sign) in steps of .75 dB. 470 * We'll just add level_cB, after scaling it because it's 471 * in centibels instead and has the customary minus sign. 472 */ 473 474 level += ( -4 * level_cB ) / 30; 475 476 if (level > OPL_TOTAL_LEVEL_MASK) 477 level = OPL_TOTAL_LEVEL_MASK; 478 if (level < 0) 479 level = 0; 480 481 return level & OPL_TOTAL_LEVEL_MASK; 482 } 483 484 #define OPLACT_ARTICULATE 1 485 #define OPLACT_PITCH 2 486 #define OPLACT_LEVEL 4 487 488 void 489 oplsyn_attackv(midisyn *ms, 490 uint_fast16_t voice, midipitch_t mp, int16_t level_cB) 491 { 492 oplsyn_setv(ms, voice, mp, level_cB, 493 OPLACT_ARTICULATE | OPLACT_PITCH | OPLACT_LEVEL); 494 } 495 496 static void 497 oplsyn_repitchv(midisyn *ms, uint_fast16_t voice, midipitch_t mp) 498 { 499 oplsyn_setv(ms, voice, mp, 0, OPLACT_PITCH); 500 } 501 502 static void 503 oplsyn_relevelv(midisyn *ms, uint_fast16_t voice, int16_t level_cB) 504 { 505 oplsyn_setv(ms, voice, 0, level_cB, OPLACT_LEVEL); 506 } 507 508 static void 509 oplsyn_setv(midisyn *ms, 510 uint_fast16_t voice, midipitch_t mp, int16_t level_cB, int act) 511 { 512 struct opl_softc *sc = ms->data; 513 struct opl_voice *v; 514 const struct opl_operators *p; 515 u_int32_t block_fnum; 516 int mult; 517 int c_mult, m_mult; 518 u_int32_t chan; 519 u_int8_t chars0, chars1, ksl0, ksl1, fbc; 520 u_int8_t r20m, r20c, r40m, r40c, rA0, rB0; 521 u_int8_t vol0, vol1; 522 523 KASSERT(mutex_owned(sc->lock)); 524 525 DPRINTFN(3, ("%s: %p %d %u %d\n", __func__, sc, voice, 526 mp, level_cB)); 527 528 #ifdef DIAGNOSTIC 529 if (voice >= sc->syn.nvoice) { 530 printf("%s: bad voice %d\n", __func__, voice); 531 return; 532 } 533 #endif 534 v = &sc->voices[voice]; 535 536 if ( act & OPLACT_ARTICULATE ) { 537 /* Turn off old note */ 538 opl_set_op_reg(sc, OPL_KSL_LEVEL, voice, 0, 0xff); 539 opl_set_op_reg(sc, OPL_KSL_LEVEL, voice, 1, 0xff); 540 opl_set_ch_reg(sc, OPL_KEYON_BLOCK, voice, 0); 541 542 chan = MS_GETCHAN(&ms->voices[voice]); 543 p = &opl2_instrs[ms->pgms[chan]]; 544 v->patch = p; 545 opl_load_patch(sc, voice); 546 547 fbc = p->ops[OO_FB_CONN]; 548 if (sc->model == OPL_3) { 549 fbc &= ~OPL_STEREO_BITS; 550 fbc |= sc->pan[chan]; 551 } 552 opl_set_ch_reg(sc, OPL_FEEDBACK_CONNECTION, voice, fbc); 553 } else 554 p = v->patch; 555 556 if ( act & OPLACT_LEVEL ) { 557 /* 2 voice */ 558 ksl0 = p->ops[OO_KSL_LEV+0]; 559 ksl1 = p->ops[OO_KSL_LEV+1]; 560 if (p->ops[OO_FB_CONN] & 0x01) { 561 vol0 = opl_calc_vol(ksl0, level_cB); 562 vol1 = opl_calc_vol(ksl1, level_cB); 563 } else { 564 vol0 = ksl0; 565 vol1 = opl_calc_vol(ksl1, level_cB); 566 } 567 r40m = (ksl0 & OPL_KSL_MASK) | vol0; 568 r40c = (ksl1 & OPL_KSL_MASK) | vol1; 569 570 opl_set_op_reg(sc, OPL_KSL_LEVEL, voice, 0, r40m); 571 opl_set_op_reg(sc, OPL_KSL_LEVEL, voice, 1, r40c); 572 } 573 574 if ( act & OPLACT_PITCH ) { 575 mult = 1; 576 if ( mp > MIDIPITCH_FROM_KEY(114) ) { /* out of mult 1 range */ 577 mult = 4; /* will cover remaining MIDI range */ 578 mp -= 2*MIDIPITCH_OCTAVE; 579 } 580 581 block_fnum = opl_get_block_fnum(mp); 582 583 chars0 = p->ops[OO_CHARS+0]; 584 chars1 = p->ops[OO_CHARS+1]; 585 m_mult = (chars0 & OPL_MULTIPLE_MASK) * mult; 586 c_mult = (chars1 & OPL_MULTIPLE_MASK) * mult; 587 588 if ( 4 == mult ) { 589 if ( 0 == m_mult ) /* The OPL uses 0 to represent .5 */ 590 m_mult = 2; /* but of course 0*mult above did */ 591 if ( 0 == c_mult ) /* not DTRT */ 592 c_mult = 2; 593 } 594 595 if ((m_mult > 15) || (c_mult > 15)) { 596 printf("%s: frequency out of range %u (mult %d)\n", 597 __func__, mp, mult); 598 return; 599 } 600 r20m = (chars0 &~ OPL_MULTIPLE_MASK) | m_mult; 601 r20c = (chars1 &~ OPL_MULTIPLE_MASK) | c_mult; 602 603 rA0 = block_fnum & 0xFF; 604 rB0 = (block_fnum >> 8) | OPL_KEYON_BIT; 605 606 v->rB0 = rB0; 607 608 opl_set_op_reg(sc, OPL_AM_VIB, voice, 0, r20m); 609 opl_set_op_reg(sc, OPL_AM_VIB, voice, 1, r20c); 610 611 opl_set_ch_reg(sc, OPL_FNUM_LOW, voice, rA0); 612 opl_set_ch_reg(sc, OPL_KEYON_BLOCK, voice, rB0); 613 } 614 } 615 616 void 617 oplsyn_releasev(midisyn *ms, uint_fast16_t voice, uint_fast8_t vel) 618 { 619 struct opl_softc *sc = ms->data; 620 struct opl_voice *v; 621 622 KASSERT(mutex_owned(sc->lock)); 623 624 DPRINTFN(1, ("%s: %p %d\n", __func__, sc, voice)); 625 626 #ifdef DIAGNOSTIC 627 if (voice >= sc->syn.nvoice) { 628 printf("oplsyn_noteoff: bad voice %d\n", voice); 629 return; 630 } 631 #endif 632 v = &sc->voices[voice]; 633 opl_set_ch_reg(sc, 0xB0, voice, v->rB0 & ~OPL_KEYON_BIT); 634 } 635 636 int 637 oplsyn_ctlnotice(midisyn *ms, 638 midictl_evt evt, uint_fast8_t chan, uint_fast16_t key) 639 { 640 641 DPRINTFN(1, ("%s: %p %d\n", __func__, ms->data, chan)); 642 643 switch (evt) { 644 case MIDICTL_RESET: 645 oplsyn_panhandler(ms, chan); 646 return 1; 647 648 case MIDICTL_CTLR: 649 switch (key) { 650 case MIDI_CTRL_PAN_MSB: 651 oplsyn_panhandler(ms, chan); 652 return 1; 653 } 654 return 0; 655 default: 656 return 0; 657 } 658 } 659 660 /* PROGRAM CHANGE midi event: */ 661 void 662 oplsyn_programchange(midisyn *ms, uint_fast8_t chan, uint_fast8_t prog) 663 { 664 /* sanity checks */ 665 if (chan >= MIDI_MAX_CHANS) 666 return; 667 668 ms->pgms[chan] = prog; 669 } 670 671 void 672 oplsyn_loadpatch(midisyn *ms, struct sysex_info *sysex, struct uio *uio) 673 { 674 #if 0 675 struct opl_softc *sc = ms->data; 676 struct sbi_instrument ins; 677 678 DPRINTFN(1, ("oplsyn_loadpatch: %p\n", sc)); 679 680 memcpy(&ins, sysex, sizeof *sysex); 681 if (uio->uio_resid >= sizeof ins - sizeof *sysex) 682 return EINVAL; 683 uiomove((char *)&ins + sizeof *sysex, sizeof ins - sizeof *sysex, uio); 684 /* XXX */ 685 #endif 686 } 687 688 static void 689 oplsyn_panhandler(midisyn *ms, uint_fast8_t chan) 690 { 691 struct opl_softc *sc = ms->data; 692 uint_fast16_t setting; 693 694 setting = midictl_read(&ms->ctl, chan, MIDI_CTRL_PAN_MSB, 8192); 695 setting >>= 7; /* we used to treat it as MSB only */ 696 sc->pan[chan] = 697 (setting <= OPL_MIDI_CENTER_MAX ? sc->panl : 0) | 698 (setting >= OPL_MIDI_CENTER_MIN ? sc->panr : 0); 699 } 700
Indexes created Sun Sep 21 16:09:51 GMT 2025