1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * synth callback routines for Emu10k1 4 * 5 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> 6 */ 7 8 #include <linux/export.h> 9 #include "emu10k1_synth_local.h" 10 #include <sound/asoundef.h> 11 12 /* voice status */ 13 enum { 14 V_FREE=0, V_OFF, V_RELEASED, V_PLAYING, V_END 15 }; 16 17 /* Keeps track of what we are finding */ 18 struct best_voice { 19 unsigned int time; 20 int voice; 21 }; 22 23 /* 24 * prototypes 25 */ 26 static void lookup_voices(struct snd_emux *emux, struct snd_emu10k1 *hw, 27 struct best_voice *best, int active_only); 28 static struct snd_emux_voice *get_voice(struct snd_emux *emux, 29 struct snd_emux_port *port); 30 static int start_voice(struct snd_emux_voice *vp); 31 static void trigger_voice(struct snd_emux_voice *vp); 32 static void release_voice(struct snd_emux_voice *vp); 33 static void update_voice(struct snd_emux_voice *vp, int update); 34 static void terminate_voice(struct snd_emux_voice *vp); 35 static void free_voice(struct snd_emux_voice *vp); 36 static void set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); 37 static void set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); 38 static void set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); 39 40 /* 41 * Ensure a value is between two points 42 * macro evaluates its args more than once, so changed to upper-case. 43 */ 44 #define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0) 45 #define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0) 46 47 48 /* 49 * set up operators 50 */ 51 static const struct snd_emux_operators emu10k1_ops = { 52 .owner = THIS_MODULE, 53 .get_voice = get_voice, 54 .prepare = start_voice, 55 .trigger = trigger_voice, 56 .release = release_voice, 57 .update = update_voice, 58 .terminate = terminate_voice, 59 .free_voice = free_voice, 60 .sample_new = snd_emu10k1_sample_new, 61 .sample_free = snd_emu10k1_sample_free, 62 }; 63 64 void 65 snd_emu10k1_ops_setup(struct snd_emux *emux) 66 { 67 emux->ops = emu10k1_ops; 68 } 69 70 71 /* 72 * get more voice for pcm 73 * 74 * terminate most inactive voice and give it as a pcm voice. 75 * 76 * voice_lock is already held. 77 */ 78 int 79 snd_emu10k1_synth_get_voice(struct snd_emu10k1 *hw) 80 { 81 struct snd_emux *emu; 82 struct snd_emux_voice *vp; 83 struct best_voice best[V_END]; 84 int i; 85 86 emu = hw->synth; 87 88 lookup_voices(emu, hw, best, 1); /* no OFF voices */ 89 for (i = 0; i < V_END; i++) { 90 if (best[i].voice >= 0) { 91 int ch; 92 vp = &emu->voices[best[i].voice]; 93 if ((ch = vp->ch) < 0) { 94 /* 95 dev_warn(emu->card->dev, 96 "synth_get_voice: ch < 0 (%d) ??", i); 97 */ 98 continue; 99 } 100 vp->emu->num_voices--; 101 vp->ch = -1; 102 vp->state = SNDRV_EMUX_ST_OFF; 103 return ch; 104 } 105 } 106 107 /* not found */ 108 return -ENOMEM; 109 } 110 111 112 /* 113 * turn off the voice (not terminated) 114 */ 115 static void 116 release_voice(struct snd_emux_voice *vp) 117 { 118 int dcysusv; 119 struct snd_emu10k1 *hw; 120 121 hw = vp->hw; 122 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease; 123 snd_emu10k1_ptr_write(hw, DCYSUSM, vp->ch, dcysusv); 124 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease | DCYSUSV_CHANNELENABLE_MASK; 125 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, dcysusv); 126 } 127 128 129 /* 130 * terminate the voice 131 */ 132 static void 133 terminate_voice(struct snd_emux_voice *vp) 134 { 135 struct snd_emu10k1 *hw; 136 137 if (snd_BUG_ON(!vp)) 138 return; 139 hw = vp->hw; 140 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); 141 if (vp->block) { 142 struct snd_emu10k1_memblk *emem; 143 emem = (struct snd_emu10k1_memblk *)vp->block; 144 if (emem->map_locked > 0) 145 emem->map_locked--; 146 } 147 } 148 149 /* 150 * release the voice to system 151 */ 152 static void 153 free_voice(struct snd_emux_voice *vp) 154 { 155 struct snd_emu10k1 *hw; 156 157 hw = vp->hw; 158 /* FIXME: emu10k1_synth is broken. */ 159 /* This can get called with hw == 0 */ 160 /* Problem apparent on plug, unplug then plug */ 161 /* on the Audigy 2 ZS Notebook. */ 162 if (hw && (vp->ch >= 0)) { 163 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00); 164 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); 165 // snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0); 166 snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff); 167 snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff); 168 snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]); 169 vp->emu->num_voices--; 170 vp->ch = -1; 171 } 172 } 173 174 175 /* 176 * update registers 177 */ 178 static void 179 update_voice(struct snd_emux_voice *vp, int update) 180 { 181 struct snd_emu10k1 *hw; 182 183 hw = vp->hw; 184 if (update & SNDRV_EMUX_UPDATE_VOLUME) 185 snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol); 186 if (update & SNDRV_EMUX_UPDATE_PITCH) 187 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); 188 if (update & SNDRV_EMUX_UPDATE_PAN) { 189 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan); 190 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux); 191 } 192 if (update & SNDRV_EMUX_UPDATE_FMMOD) 193 set_fmmod(hw, vp); 194 if (update & SNDRV_EMUX_UPDATE_TREMFREQ) 195 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); 196 if (update & SNDRV_EMUX_UPDATE_FM2FRQ2) 197 set_fm2frq2(hw, vp); 198 if (update & SNDRV_EMUX_UPDATE_Q) 199 set_filterQ(hw, vp); 200 } 201 202 203 /* 204 * look up voice table - get the best voice in order of preference 205 */ 206 /* spinlock held! */ 207 static void 208 lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw, 209 struct best_voice *best, int active_only) 210 { 211 struct snd_emux_voice *vp; 212 struct best_voice *bp; 213 int i; 214 215 for (i = 0; i < V_END; i++) { 216 best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */ 217 best[i].voice = -1; 218 } 219 220 /* 221 * Go through them all and get a best one to use. 222 * NOTE: could also look at volume and pick the quietest one. 223 */ 224 for (i = 0; i < emu->max_voices; i++) { 225 int state, val; 226 227 vp = &emu->voices[i]; 228 state = vp->state; 229 if (state == SNDRV_EMUX_ST_OFF) { 230 if (vp->ch < 0) { 231 if (active_only) 232 continue; 233 bp = best + V_FREE; 234 } else 235 bp = best + V_OFF; 236 } 237 else if (state == SNDRV_EMUX_ST_RELEASED || 238 state == SNDRV_EMUX_ST_PENDING) { 239 bp = best + V_RELEASED; 240 #if 1 241 val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch); 242 if (! val) 243 bp = best + V_OFF; 244 #endif 245 } 246 else if (state == SNDRV_EMUX_ST_STANDBY) 247 continue; 248 else if (state & SNDRV_EMUX_ST_ON) 249 bp = best + V_PLAYING; 250 else 251 continue; 252 253 /* check if sample is finished playing (non-looping only) */ 254 if (bp != best + V_OFF && bp != best + V_FREE && 255 (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) { 256 val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch); 257 if (val >= vp->reg.loopstart) 258 bp = best + V_OFF; 259 } 260 261 if (vp->time < bp->time) { 262 bp->time = vp->time; 263 bp->voice = i; 264 } 265 } 266 } 267 268 /* 269 * get an empty voice 270 * 271 * emu->voice_lock is already held. 272 */ 273 static struct snd_emux_voice * 274 get_voice(struct snd_emux *emu, struct snd_emux_port *port) 275 { 276 struct snd_emu10k1 *hw; 277 struct snd_emux_voice *vp; 278 struct best_voice best[V_END]; 279 int i; 280 281 hw = emu->hw; 282 283 lookup_voices(emu, hw, best, 0); 284 for (i = 0; i < V_END; i++) { 285 if (best[i].voice >= 0) { 286 vp = &emu->voices[best[i].voice]; 287 if (vp->ch < 0) { 288 /* allocate a voice */ 289 struct snd_emu10k1_voice *hwvoice; 290 if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL) 291 continue; 292 vp->ch = hwvoice->number; 293 emu->num_voices++; 294 } 295 return vp; 296 } 297 } 298 299 /* not found */ 300 return NULL; 301 } 302 303 /* 304 * prepare envelopes and LFOs 305 */ 306 static int 307 start_voice(struct snd_emux_voice *vp) 308 { 309 unsigned int temp; 310 int ch; 311 unsigned int addr, mapped_offset; 312 struct snd_midi_channel *chan; 313 struct snd_emu10k1 *hw; 314 struct snd_emu10k1_memblk *emem; 315 316 hw = vp->hw; 317 ch = vp->ch; 318 if (snd_BUG_ON(ch < 0)) 319 return -EINVAL; 320 chan = vp->chan; 321 322 emem = (struct snd_emu10k1_memblk *)vp->block; 323 if (emem == NULL) 324 return -EINVAL; 325 emem->map_locked++; 326 if (snd_emu10k1_memblk_map(hw, emem) < 0) { 327 /* dev_err(hw->card->devK, "emu: cannot map!\n"); */ 328 return -ENOMEM; 329 } 330 mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1; 331 vp->reg.start += mapped_offset; 332 vp->reg.end += mapped_offset; 333 vp->reg.loopstart += mapped_offset; 334 vp->reg.loopend += mapped_offset; 335 336 /* set channel routing */ 337 /* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */ 338 if (hw->audigy) { 339 temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) | 340 (FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24); 341 snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp); 342 } else { 343 temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) | 344 (FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28); 345 snd_emu10k1_ptr_write(hw, FXRT, ch, temp); 346 } 347 348 /* channel to be silent and idle */ 349 snd_emu10k1_ptr_write(hw, DCYSUSV, ch, 0x0000); 350 snd_emu10k1_ptr_write(hw, VTFT, ch, 0x0000FFFF); 351 snd_emu10k1_ptr_write(hw, CVCF, ch, 0x0000FFFF); 352 snd_emu10k1_ptr_write(hw, PTRX, ch, 0); 353 snd_emu10k1_ptr_write(hw, CPF, ch, 0); 354 355 /* set pitch offset */ 356 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); 357 358 /* set envelope parameters */ 359 snd_emu10k1_ptr_write(hw, ENVVAL, ch, vp->reg.parm.moddelay); 360 snd_emu10k1_ptr_write(hw, ATKHLDM, ch, vp->reg.parm.modatkhld); 361 snd_emu10k1_ptr_write(hw, DCYSUSM, ch, vp->reg.parm.moddcysus); 362 snd_emu10k1_ptr_write(hw, ENVVOL, ch, vp->reg.parm.voldelay); 363 snd_emu10k1_ptr_write(hw, ATKHLDV, ch, vp->reg.parm.volatkhld); 364 /* decay/sustain parameter for volume envelope is used 365 for triggerg the voice */ 366 367 /* cutoff and volume */ 368 temp = (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol; 369 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, temp); 370 371 /* modulation envelope heights */ 372 snd_emu10k1_ptr_write(hw, PEFE, ch, vp->reg.parm.pefe); 373 374 /* lfo1/2 delay */ 375 snd_emu10k1_ptr_write(hw, LFOVAL1, ch, vp->reg.parm.lfo1delay); 376 snd_emu10k1_ptr_write(hw, LFOVAL2, ch, vp->reg.parm.lfo2delay); 377 378 /* lfo1 pitch & cutoff shift */ 379 set_fmmod(hw, vp); 380 /* lfo1 volume & freq */ 381 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); 382 /* lfo2 pitch & freq */ 383 set_fm2frq2(hw, vp); 384 385 /* reverb and loop start (reverb 8bit, MSB) */ 386 temp = vp->reg.parm.reverb; 387 temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10; 388 LIMITMAX(temp, 255); 389 addr = vp->reg.loopstart; 390 snd_emu10k1_ptr_write(hw, PSST, vp->ch, (temp << 24) | addr); 391 392 /* chorus & loop end (chorus 8bit, MSB) */ 393 addr = vp->reg.loopend; 394 temp = vp->reg.parm.chorus; 395 temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10; 396 LIMITMAX(temp, 255); 397 temp = (temp <<24) | addr; 398 snd_emu10k1_ptr_write(hw, DSL, ch, temp); 399 400 /* clear filter delay memory */ 401 snd_emu10k1_ptr_write(hw, Z1, ch, 0); 402 snd_emu10k1_ptr_write(hw, Z2, ch, 0); 403 404 /* invalidate maps */ 405 temp = (hw->silent_page.addr << hw->address_mode) | (hw->address_mode ? MAP_PTI_MASK1 : MAP_PTI_MASK0); 406 snd_emu10k1_ptr_write(hw, MAPA, ch, temp); 407 snd_emu10k1_ptr_write(hw, MAPB, ch, temp); 408 #if 0 409 /* cache */ 410 { 411 unsigned int val, sample; 412 val = 32; 413 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) 414 sample = 0x80808080; 415 else { 416 sample = 0; 417 val *= 2; 418 } 419 420 /* cache */ 421 snd_emu10k1_ptr_write(hw, CCR, ch, 0x1c << 16); 422 snd_emu10k1_ptr_write(hw, CDE, ch, sample); 423 snd_emu10k1_ptr_write(hw, CDF, ch, sample); 424 425 /* invalidate maps */ 426 temp = ((unsigned int)hw->silent_page.addr << hw_address_mode) | (hw->address_mode ? MAP_PTI_MASK1 : MAP_PTI_MASK0); 427 snd_emu10k1_ptr_write(hw, MAPA, ch, temp); 428 snd_emu10k1_ptr_write(hw, MAPB, ch, temp); 429 430 /* fill cache */ 431 val -= 4; 432 val <<= 25; 433 val |= 0x1c << 16; 434 snd_emu10k1_ptr_write(hw, CCR, ch, val); 435 } 436 #endif 437 438 /* Q & current address (Q 4bit value, MSB) */ 439 addr = vp->reg.start; 440 temp = vp->reg.parm.filterQ; 441 temp = (temp<<28) | addr; 442 if (vp->apitch < 0xe400) 443 temp |= CCCA_INTERPROM_0; 444 else { 445 unsigned int shift = (vp->apitch - 0xe000) >> 10; 446 temp |= shift << 25; 447 } 448 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) 449 temp |= CCCA_8BITSELECT; 450 snd_emu10k1_ptr_write(hw, CCCA, ch, temp); 451 452 /* reset volume */ 453 temp = (unsigned int)vp->vtarget << 16; 454 snd_emu10k1_ptr_write(hw, VTFT, ch, temp | vp->ftarget); 455 snd_emu10k1_ptr_write(hw, CVCF, ch, temp | 0xff00); 456 return 0; 457 } 458 459 /* 460 * Start envelope 461 */ 462 static void 463 trigger_voice(struct snd_emux_voice *vp) 464 { 465 unsigned int temp, ptarget; 466 struct snd_emu10k1 *hw; 467 struct snd_emu10k1_memblk *emem; 468 469 hw = vp->hw; 470 471 emem = (struct snd_emu10k1_memblk *)vp->block; 472 if (! emem || emem->mapped_page < 0) 473 return; /* not mapped */ 474 475 #if 0 476 ptarget = (unsigned int)vp->ptarget << 16; 477 #else 478 ptarget = IP_TO_CP(vp->apitch); 479 #endif 480 /* set pitch target and pan (volume) */ 481 temp = ptarget | (vp->apan << 8) | vp->aaux; 482 snd_emu10k1_ptr_write(hw, PTRX, vp->ch, temp); 483 484 /* pitch target */ 485 snd_emu10k1_ptr_write(hw, CPF, vp->ch, ptarget); 486 487 /* trigger voice */ 488 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, vp->reg.parm.voldcysus|DCYSUSV_CHANNELENABLE_MASK); 489 } 490 491 #define MOD_SENSE 18 492 493 /* set lfo1 modulation height and cutoff */ 494 static void 495 set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 496 { 497 unsigned short fmmod; 498 short pitch; 499 unsigned char cutoff; 500 int modulation; 501 502 pitch = (char)(vp->reg.parm.fmmod>>8); 503 cutoff = (vp->reg.parm.fmmod & 0xff); 504 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 505 pitch += (MOD_SENSE * modulation) / 1200; 506 LIMITVALUE(pitch, -128, 127); 507 fmmod = ((unsigned char)pitch<<8) | cutoff; 508 snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, fmmod); 509 } 510 511 /* set lfo2 pitch & frequency */ 512 static void 513 set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 514 { 515 unsigned short fm2frq2; 516 short pitch; 517 unsigned char freq; 518 int modulation; 519 520 pitch = (char)(vp->reg.parm.fm2frq2>>8); 521 freq = vp->reg.parm.fm2frq2 & 0xff; 522 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 523 pitch += (MOD_SENSE * modulation) / 1200; 524 LIMITVALUE(pitch, -128, 127); 525 fm2frq2 = ((unsigned char)pitch<<8) | freq; 526 snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, fm2frq2); 527 } 528 529 /* set filterQ */ 530 static void 531 set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 532 { 533 unsigned int val; 534 val = snd_emu10k1_ptr_read(hw, CCCA, vp->ch) & ~CCCA_RESONANCE; 535 val |= (vp->reg.parm.filterQ << 28); 536 snd_emu10k1_ptr_write(hw, CCCA, vp->ch, val); 537 } 538