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 u32 make_fmmod(struct snd_emux_voice *vp); 37 static u32 make_fm2frq2(struct snd_emux_voice *vp); 38 39 /* 40 * Ensure a value is between two points 41 * macro evaluates its args more than once, so changed to upper-case. 42 */ 43 #define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0) 44 #define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0) 45 46 47 /* 48 * set up operators 49 */ 50 static const struct snd_emux_operators emu10k1_ops = { 51 .owner = THIS_MODULE, 52 .get_voice = get_voice, 53 .prepare = start_voice, 54 .trigger = trigger_voice, 55 .release = release_voice, 56 .update = update_voice, 57 .terminate = terminate_voice, 58 .free_voice = free_voice, 59 .sample_new = snd_emu10k1_sample_new, 60 .sample_free = snd_emu10k1_sample_free, 61 }; 62 63 void 64 snd_emu10k1_ops_setup(struct snd_emux *emux) 65 { 66 emux->ops = emu10k1_ops; 67 } 68 69 70 /* 71 * get more voice for pcm 72 * 73 * terminate most inactive voice and give it as a pcm voice. 74 * 75 * voice_lock is already held. 76 */ 77 int 78 snd_emu10k1_synth_get_voice(struct snd_emu10k1 *hw) 79 { 80 struct snd_emux *emu; 81 struct snd_emux_voice *vp; 82 struct best_voice best[V_END]; 83 int i; 84 85 emu = hw->synth; 86 87 lookup_voices(emu, hw, best, 1); /* no OFF voices */ 88 for (i = 0; i < V_END; i++) { 89 if (best[i].voice >= 0) { 90 int ch; 91 vp = &emu->voices[best[i].voice]; 92 ch = vp->ch; 93 if (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 struct snd_emu10k1 *hw; 119 120 hw = vp->hw; 121 snd_emu10k1_ptr_write_multiple(hw, vp->ch, 122 DCYSUSM, (unsigned char)vp->reg.parm.modrelease | DCYSUSM_PHASE1_MASK, 123 DCYSUSV, (unsigned char)vp->reg.parm.volrelease | DCYSUSV_PHASE1_MASK | DCYSUSV_CHANNELENABLE_MASK, 124 REGLIST_END); 125 } 126 127 128 /* 129 * terminate the voice 130 */ 131 static void 132 terminate_voice(struct snd_emux_voice *vp) 133 { 134 struct snd_emu10k1 *hw; 135 136 if (snd_BUG_ON(!vp)) 137 return; 138 hw = vp->hw; 139 snd_emu10k1_ptr_write_multiple(hw, vp->ch, 140 DCYSUSV, 0, 141 VTFT, VTFT_FILTERTARGET_MASK, 142 CVCF, CVCF_CURRENTFILTER_MASK, 143 PTRX, 0, 144 CPF, 0, 145 REGLIST_END); 146 if (vp->block) { 147 struct snd_emu10k1_memblk *emem; 148 emem = (struct snd_emu10k1_memblk *)vp->block; 149 if (emem->map_locked > 0) 150 emem->map_locked--; 151 } 152 } 153 154 /* 155 * release the voice to system 156 */ 157 static void 158 free_voice(struct snd_emux_voice *vp) 159 { 160 struct snd_emu10k1 *hw; 161 162 hw = vp->hw; 163 /* FIXME: emu10k1_synth is broken. */ 164 /* This can get called with hw == 0 */ 165 /* Problem apparent on plug, unplug then plug */ 166 /* on the Audigy 2 ZS Notebook. */ 167 if (hw && (vp->ch >= 0)) { 168 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00); 169 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); 170 // snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0); 171 snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff); 172 snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff); 173 snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]); 174 vp->emu->num_voices--; 175 vp->ch = -1; 176 } 177 } 178 179 180 /* 181 * update registers 182 */ 183 static void 184 update_voice(struct snd_emux_voice *vp, int update) 185 { 186 struct snd_emu10k1 *hw; 187 188 hw = vp->hw; 189 if (update & SNDRV_EMUX_UPDATE_VOLUME) 190 snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol); 191 if (update & SNDRV_EMUX_UPDATE_PITCH) 192 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); 193 if (update & SNDRV_EMUX_UPDATE_PAN) { 194 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan); 195 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux); 196 } 197 if (update & SNDRV_EMUX_UPDATE_FMMOD) 198 snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, make_fmmod(vp)); 199 if (update & SNDRV_EMUX_UPDATE_TREMFREQ) 200 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); 201 if (update & SNDRV_EMUX_UPDATE_FM2FRQ2) 202 snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, make_fm2frq2(vp)); 203 if (update & SNDRV_EMUX_UPDATE_Q) 204 snd_emu10k1_ptr_write(hw, CCCA_RESONANCE, vp->ch, vp->reg.parm.filterQ); 205 } 206 207 208 /* 209 * look up voice table - get the best voice in order of preference 210 */ 211 /* spinlock held! */ 212 static void 213 lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw, 214 struct best_voice *best, int active_only) 215 { 216 struct snd_emux_voice *vp; 217 struct best_voice *bp; 218 int i; 219 220 for (i = 0; i < V_END; i++) { 221 best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */ 222 best[i].voice = -1; 223 } 224 225 /* 226 * Go through them all and get a best one to use. 227 * NOTE: could also look at volume and pick the quietest one. 228 */ 229 for (i = 0; i < emu->max_voices; i++) { 230 int state, val; 231 232 vp = &emu->voices[i]; 233 state = vp->state; 234 if (state == SNDRV_EMUX_ST_OFF) { 235 if (vp->ch < 0) { 236 if (active_only) 237 continue; 238 bp = best + V_FREE; 239 } else 240 bp = best + V_OFF; 241 } 242 else if (state == SNDRV_EMUX_ST_RELEASED || 243 state == SNDRV_EMUX_ST_PENDING) { 244 bp = best + V_RELEASED; 245 #if 1 246 val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch); 247 if (! val) 248 bp = best + V_OFF; 249 #endif 250 } 251 else if (state == SNDRV_EMUX_ST_STANDBY) 252 continue; 253 else if (state & SNDRV_EMUX_ST_ON) 254 bp = best + V_PLAYING; 255 else 256 continue; 257 258 /* check if sample is finished playing (non-looping only) */ 259 if (bp != best + V_OFF && bp != best + V_FREE && 260 (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) { 261 val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch) - 64; 262 if (val >= vp->reg.loopstart) 263 bp = best + V_OFF; 264 } 265 266 if (vp->time < bp->time) { 267 bp->time = vp->time; 268 bp->voice = i; 269 } 270 } 271 } 272 273 /* 274 * get an empty voice 275 * 276 * emu->voice_lock is already held. 277 */ 278 static struct snd_emux_voice * 279 get_voice(struct snd_emux *emu, struct snd_emux_port *port) 280 { 281 struct snd_emu10k1 *hw; 282 struct snd_emux_voice *vp; 283 struct best_voice best[V_END]; 284 int i; 285 286 hw = emu->hw; 287 288 lookup_voices(emu, hw, best, 0); 289 for (i = 0; i < V_END; i++) { 290 if (best[i].voice >= 0) { 291 vp = &emu->voices[best[i].voice]; 292 if (vp->ch < 0) { 293 /* allocate a voice */ 294 struct snd_emu10k1_voice *hwvoice; 295 if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL) 296 continue; 297 vp->ch = hwvoice->number; 298 emu->num_voices++; 299 } 300 return vp; 301 } 302 } 303 304 /* not found */ 305 return NULL; 306 } 307 308 /* 309 * prepare envelopes and LFOs 310 */ 311 static int 312 start_voice(struct snd_emux_voice *vp) 313 { 314 unsigned int temp; 315 int ch; 316 u32 psst, dsl, map, ccca, vtarget; 317 unsigned int addr, mapped_offset; 318 struct snd_midi_channel *chan; 319 struct snd_emu10k1 *hw; 320 struct snd_emu10k1_memblk *emem; 321 322 hw = vp->hw; 323 ch = vp->ch; 324 if (snd_BUG_ON(ch < 0)) 325 return -EINVAL; 326 chan = vp->chan; 327 328 emem = (struct snd_emu10k1_memblk *)vp->block; 329 if (emem == NULL) 330 return -EINVAL; 331 emem->map_locked++; 332 if (snd_emu10k1_memblk_map(hw, emem) < 0) { 333 /* dev_err(hw->card->devK, "emu: cannot map!\n"); */ 334 return -ENOMEM; 335 } 336 mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1; 337 vp->reg.start += mapped_offset; 338 vp->reg.end += mapped_offset; 339 vp->reg.loopstart += mapped_offset; 340 vp->reg.loopend += mapped_offset; 341 342 /* set channel routing */ 343 /* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */ 344 if (hw->audigy) { 345 temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) | 346 (FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24); 347 snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp); 348 } else { 349 temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) | 350 (FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28); 351 snd_emu10k1_ptr_write(hw, FXRT, ch, temp); 352 } 353 354 temp = vp->reg.parm.reverb; 355 temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10; 356 LIMITMAX(temp, 255); 357 addr = vp->reg.loopstart; 358 psst = (temp << 24) | addr; 359 360 addr = vp->reg.loopend; 361 temp = vp->reg.parm.chorus; 362 temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10; 363 LIMITMAX(temp, 255); 364 dsl = (temp << 24) | addr; 365 366 map = (hw->silent_page.addr << hw->address_mode) | (hw->address_mode ? MAP_PTI_MASK1 : MAP_PTI_MASK0); 367 368 addr = vp->reg.start + 64; 369 temp = vp->reg.parm.filterQ; 370 ccca = (temp << 28) | addr; 371 if (vp->apitch < 0xe400) 372 ccca |= CCCA_INTERPROM_0; 373 else { 374 unsigned int shift = (vp->apitch - 0xe000) >> 10; 375 ccca |= shift << 25; 376 } 377 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) 378 ccca |= CCCA_8BITSELECT; 379 380 vtarget = (unsigned int)vp->vtarget << 16; 381 382 snd_emu10k1_ptr_write_multiple(hw, ch, 383 /* channel to be silent and idle */ 384 DCYSUSV, 0, 385 VTFT, VTFT_FILTERTARGET_MASK, 386 CVCF, CVCF_CURRENTFILTER_MASK, 387 PTRX, 0, 388 CPF, 0, 389 390 /* set pitch offset */ 391 IP, vp->apitch, 392 393 /* set envelope parameters */ 394 ENVVAL, vp->reg.parm.moddelay, 395 ATKHLDM, vp->reg.parm.modatkhld, 396 DCYSUSM, vp->reg.parm.moddcysus, 397 ENVVOL, vp->reg.parm.voldelay, 398 ATKHLDV, vp->reg.parm.volatkhld, 399 /* decay/sustain parameter for volume envelope is used 400 for triggerg the voice */ 401 402 /* cutoff and volume */ 403 IFATN, (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol, 404 405 /* modulation envelope heights */ 406 PEFE, vp->reg.parm.pefe, 407 408 /* lfo1/2 delay */ 409 LFOVAL1, vp->reg.parm.lfo1delay, 410 LFOVAL2, vp->reg.parm.lfo2delay, 411 412 /* lfo1 pitch & cutoff shift */ 413 FMMOD, make_fmmod(vp), 414 /* lfo1 volume & freq */ 415 TREMFRQ, vp->reg.parm.tremfrq, 416 /* lfo2 pitch & freq */ 417 FM2FRQ2, make_fm2frq2(vp), 418 419 /* reverb and loop start (reverb 8bit, MSB) */ 420 PSST, psst, 421 422 /* chorus & loop end (chorus 8bit, MSB) */ 423 DSL, dsl, 424 425 /* clear filter delay memory */ 426 Z1, 0, 427 Z2, 0, 428 429 /* invalidate maps */ 430 MAPA, map, 431 MAPB, map, 432 433 /* Q & current address (Q 4bit value, MSB) */ 434 CCCA, ccca, 435 436 /* cache */ 437 CCR, REG_VAL_PUT(CCR_CACHEINVALIDSIZE, 64), 438 439 /* reset volume */ 440 VTFT, vtarget | vp->ftarget, 441 CVCF, vtarget | CVCF_CURRENTFILTER_MASK, 442 443 REGLIST_END); 444 445 return 0; 446 } 447 448 /* 449 * Start envelope 450 */ 451 static void 452 trigger_voice(struct snd_emux_voice *vp) 453 { 454 unsigned int ptarget; 455 struct snd_emu10k1 *hw; 456 struct snd_emu10k1_memblk *emem; 457 458 hw = vp->hw; 459 460 emem = (struct snd_emu10k1_memblk *)vp->block; 461 if (! emem || emem->mapped_page < 0) 462 return; /* not mapped */ 463 464 #if 0 465 ptarget = (unsigned int)vp->ptarget << 16; 466 #else 467 ptarget = IP_TO_CP(vp->apitch); 468 #endif 469 snd_emu10k1_ptr_write_multiple(hw, vp->ch, 470 /* set pitch target and pan (volume) */ 471 PTRX, ptarget | (vp->apan << 8) | vp->aaux, 472 473 /* current pitch and fractional address */ 474 CPF, ptarget, 475 476 /* enable envelope engine */ 477 DCYSUSV, vp->reg.parm.voldcysus | DCYSUSV_CHANNELENABLE_MASK, 478 479 REGLIST_END); 480 } 481 482 #define MOD_SENSE 18 483 484 /* calculate lfo1 modulation height and cutoff register */ 485 static u32 486 make_fmmod(struct snd_emux_voice *vp) 487 { 488 short pitch; 489 unsigned char cutoff; 490 int modulation; 491 492 pitch = (char)(vp->reg.parm.fmmod>>8); 493 cutoff = (vp->reg.parm.fmmod & 0xff); 494 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 495 pitch += (MOD_SENSE * modulation) / 1200; 496 LIMITVALUE(pitch, -128, 127); 497 return ((unsigned char)pitch << 8) | cutoff; 498 } 499 500 /* calculate set lfo2 pitch & frequency register */ 501 static u32 502 make_fm2frq2(struct snd_emux_voice *vp) 503 { 504 short pitch; 505 unsigned char freq; 506 int modulation; 507 508 pitch = (char)(vp->reg.parm.fm2frq2>>8); 509 freq = vp->reg.parm.fm2frq2 & 0xff; 510 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 511 pitch += (MOD_SENSE * modulation) / 1200; 512 LIMITVALUE(pitch, -128, 127); 513 return ((unsigned char)pitch << 8) | freq; 514 } 515