1 /* 2 * synth callback routines for Emu10k1 3 * 4 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21 #include <linux/export.h> 22 #include "emu10k1_synth_local.h" 23 #include <sound/asoundef.h> 24 25 /* voice status */ 26 enum { 27 V_FREE=0, V_OFF, V_RELEASED, V_PLAYING, V_END 28 }; 29 30 /* Keeps track of what we are finding */ 31 struct best_voice { 32 unsigned int time; 33 int voice; 34 }; 35 36 /* 37 * prototypes 38 */ 39 static void lookup_voices(struct snd_emux *emux, struct snd_emu10k1 *hw, 40 struct best_voice *best, int active_only); 41 static struct snd_emux_voice *get_voice(struct snd_emux *emux, 42 struct snd_emux_port *port); 43 static int start_voice(struct snd_emux_voice *vp); 44 static void trigger_voice(struct snd_emux_voice *vp); 45 static void release_voice(struct snd_emux_voice *vp); 46 static void update_voice(struct snd_emux_voice *vp, int update); 47 static void terminate_voice(struct snd_emux_voice *vp); 48 static void free_voice(struct snd_emux_voice *vp); 49 static void set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); 50 static void set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); 51 static void set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); 52 53 /* 54 * Ensure a value is between two points 55 * macro evaluates its args more than once, so changed to upper-case. 56 */ 57 #define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0) 58 #define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0) 59 60 61 /* 62 * set up operators 63 */ 64 static struct snd_emux_operators emu10k1_ops = { 65 .owner = THIS_MODULE, 66 .get_voice = get_voice, 67 .prepare = start_voice, 68 .trigger = trigger_voice, 69 .release = release_voice, 70 .update = update_voice, 71 .terminate = terminate_voice, 72 .free_voice = free_voice, 73 .sample_new = snd_emu10k1_sample_new, 74 .sample_free = snd_emu10k1_sample_free, 75 }; 76 77 void 78 snd_emu10k1_ops_setup(struct snd_emux *emux) 79 { 80 emux->ops = emu10k1_ops; 81 } 82 83 84 /* 85 * get more voice for pcm 86 * 87 * terminate most inactive voice and give it as a pcm voice. 88 * 89 * voice_lock is already held. 90 */ 91 int 92 snd_emu10k1_synth_get_voice(struct snd_emu10k1 *hw) 93 { 94 struct snd_emux *emu; 95 struct snd_emux_voice *vp; 96 struct best_voice best[V_END]; 97 int i; 98 99 emu = hw->synth; 100 101 lookup_voices(emu, hw, best, 1); /* no OFF voices */ 102 for (i = 0; i < V_END; i++) { 103 if (best[i].voice >= 0) { 104 int ch; 105 vp = &emu->voices[best[i].voice]; 106 if ((ch = vp->ch) < 0) { 107 /* 108 dev_warn(emu->card->dev, 109 "synth_get_voice: ch < 0 (%d) ??", i); 110 */ 111 continue; 112 } 113 vp->emu->num_voices--; 114 vp->ch = -1; 115 vp->state = SNDRV_EMUX_ST_OFF; 116 return ch; 117 } 118 } 119 120 /* not found */ 121 return -ENOMEM; 122 } 123 124 125 /* 126 * turn off the voice (not terminated) 127 */ 128 static void 129 release_voice(struct snd_emux_voice *vp) 130 { 131 int dcysusv; 132 struct snd_emu10k1 *hw; 133 134 hw = vp->hw; 135 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease; 136 snd_emu10k1_ptr_write(hw, DCYSUSM, vp->ch, dcysusv); 137 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease | DCYSUSV_CHANNELENABLE_MASK; 138 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, dcysusv); 139 } 140 141 142 /* 143 * terminate the voice 144 */ 145 static void 146 terminate_voice(struct snd_emux_voice *vp) 147 { 148 struct snd_emu10k1 *hw; 149 150 if (snd_BUG_ON(!vp)) 151 return; 152 hw = vp->hw; 153 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); 154 if (vp->block) { 155 struct snd_emu10k1_memblk *emem; 156 emem = (struct snd_emu10k1_memblk *)vp->block; 157 if (emem->map_locked > 0) 158 emem->map_locked--; 159 } 160 } 161 162 /* 163 * release the voice to system 164 */ 165 static void 166 free_voice(struct snd_emux_voice *vp) 167 { 168 struct snd_emu10k1 *hw; 169 170 hw = vp->hw; 171 /* FIXME: emu10k1_synth is broken. */ 172 /* This can get called with hw == 0 */ 173 /* Problem apparent on plug, unplug then plug */ 174 /* on the Audigy 2 ZS Notebook. */ 175 if (hw && (vp->ch >= 0)) { 176 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00); 177 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); 178 // snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0); 179 snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff); 180 snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff); 181 snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]); 182 vp->emu->num_voices--; 183 vp->ch = -1; 184 } 185 } 186 187 188 /* 189 * update registers 190 */ 191 static void 192 update_voice(struct snd_emux_voice *vp, int update) 193 { 194 struct snd_emu10k1 *hw; 195 196 hw = vp->hw; 197 if (update & SNDRV_EMUX_UPDATE_VOLUME) 198 snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol); 199 if (update & SNDRV_EMUX_UPDATE_PITCH) 200 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); 201 if (update & SNDRV_EMUX_UPDATE_PAN) { 202 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan); 203 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux); 204 } 205 if (update & SNDRV_EMUX_UPDATE_FMMOD) 206 set_fmmod(hw, vp); 207 if (update & SNDRV_EMUX_UPDATE_TREMFREQ) 208 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); 209 if (update & SNDRV_EMUX_UPDATE_FM2FRQ2) 210 set_fm2frq2(hw, vp); 211 if (update & SNDRV_EMUX_UPDATE_Q) 212 set_filterQ(hw, vp); 213 } 214 215 216 /* 217 * look up voice table - get the best voice in order of preference 218 */ 219 /* spinlock held! */ 220 static void 221 lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw, 222 struct best_voice *best, int active_only) 223 { 224 struct snd_emux_voice *vp; 225 struct best_voice *bp; 226 int i; 227 228 for (i = 0; i < V_END; i++) { 229 best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */ 230 best[i].voice = -1; 231 } 232 233 /* 234 * Go through them all and get a best one to use. 235 * NOTE: could also look at volume and pick the quietest one. 236 */ 237 for (i = 0; i < emu->max_voices; i++) { 238 int state, val; 239 240 vp = &emu->voices[i]; 241 state = vp->state; 242 if (state == SNDRV_EMUX_ST_OFF) { 243 if (vp->ch < 0) { 244 if (active_only) 245 continue; 246 bp = best + V_FREE; 247 } else 248 bp = best + V_OFF; 249 } 250 else if (state == SNDRV_EMUX_ST_RELEASED || 251 state == SNDRV_EMUX_ST_PENDING) { 252 bp = best + V_RELEASED; 253 #if 1 254 val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch); 255 if (! val) 256 bp = best + V_OFF; 257 #endif 258 } 259 else if (state == SNDRV_EMUX_ST_STANDBY) 260 continue; 261 else if (state & SNDRV_EMUX_ST_ON) 262 bp = best + V_PLAYING; 263 else 264 continue; 265 266 /* check if sample is finished playing (non-looping only) */ 267 if (bp != best + V_OFF && bp != best + V_FREE && 268 (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) { 269 val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch); 270 if (val >= vp->reg.loopstart) 271 bp = best + V_OFF; 272 } 273 274 if (vp->time < bp->time) { 275 bp->time = vp->time; 276 bp->voice = i; 277 } 278 } 279 } 280 281 /* 282 * get an empty voice 283 * 284 * emu->voice_lock is already held. 285 */ 286 static struct snd_emux_voice * 287 get_voice(struct snd_emux *emu, struct snd_emux_port *port) 288 { 289 struct snd_emu10k1 *hw; 290 struct snd_emux_voice *vp; 291 struct best_voice best[V_END]; 292 int i; 293 294 hw = emu->hw; 295 296 lookup_voices(emu, hw, best, 0); 297 for (i = 0; i < V_END; i++) { 298 if (best[i].voice >= 0) { 299 vp = &emu->voices[best[i].voice]; 300 if (vp->ch < 0) { 301 /* allocate a voice */ 302 struct snd_emu10k1_voice *hwvoice; 303 if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL) 304 continue; 305 vp->ch = hwvoice->number; 306 emu->num_voices++; 307 } 308 return vp; 309 } 310 } 311 312 /* not found */ 313 return NULL; 314 } 315 316 /* 317 * prepare envelopes and LFOs 318 */ 319 static int 320 start_voice(struct snd_emux_voice *vp) 321 { 322 unsigned int temp; 323 int ch; 324 unsigned int addr, mapped_offset; 325 struct snd_midi_channel *chan; 326 struct snd_emu10k1 *hw; 327 struct snd_emu10k1_memblk *emem; 328 329 hw = vp->hw; 330 ch = vp->ch; 331 if (snd_BUG_ON(ch < 0)) 332 return -EINVAL; 333 chan = vp->chan; 334 335 emem = (struct snd_emu10k1_memblk *)vp->block; 336 if (emem == NULL) 337 return -EINVAL; 338 emem->map_locked++; 339 if (snd_emu10k1_memblk_map(hw, emem) < 0) { 340 /* dev_err(hw->card->devK, "emu: cannot map!\n"); */ 341 return -ENOMEM; 342 } 343 mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1; 344 vp->reg.start += mapped_offset; 345 vp->reg.end += mapped_offset; 346 vp->reg.loopstart += mapped_offset; 347 vp->reg.loopend += mapped_offset; 348 349 /* set channel routing */ 350 /* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */ 351 if (hw->audigy) { 352 temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) | 353 (FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24); 354 snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp); 355 } else { 356 temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) | 357 (FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28); 358 snd_emu10k1_ptr_write(hw, FXRT, ch, temp); 359 } 360 361 /* channel to be silent and idle */ 362 snd_emu10k1_ptr_write(hw, DCYSUSV, ch, 0x0000); 363 snd_emu10k1_ptr_write(hw, VTFT, ch, 0x0000FFFF); 364 snd_emu10k1_ptr_write(hw, CVCF, ch, 0x0000FFFF); 365 snd_emu10k1_ptr_write(hw, PTRX, ch, 0); 366 snd_emu10k1_ptr_write(hw, CPF, ch, 0); 367 368 /* set pitch offset */ 369 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); 370 371 /* set envelope parameters */ 372 snd_emu10k1_ptr_write(hw, ENVVAL, ch, vp->reg.parm.moddelay); 373 snd_emu10k1_ptr_write(hw, ATKHLDM, ch, vp->reg.parm.modatkhld); 374 snd_emu10k1_ptr_write(hw, DCYSUSM, ch, vp->reg.parm.moddcysus); 375 snd_emu10k1_ptr_write(hw, ENVVOL, ch, vp->reg.parm.voldelay); 376 snd_emu10k1_ptr_write(hw, ATKHLDV, ch, vp->reg.parm.volatkhld); 377 /* decay/sustain parameter for volume envelope is used 378 for triggerg the voice */ 379 380 /* cutoff and volume */ 381 temp = (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol; 382 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, temp); 383 384 /* modulation envelope heights */ 385 snd_emu10k1_ptr_write(hw, PEFE, ch, vp->reg.parm.pefe); 386 387 /* lfo1/2 delay */ 388 snd_emu10k1_ptr_write(hw, LFOVAL1, ch, vp->reg.parm.lfo1delay); 389 snd_emu10k1_ptr_write(hw, LFOVAL2, ch, vp->reg.parm.lfo2delay); 390 391 /* lfo1 pitch & cutoff shift */ 392 set_fmmod(hw, vp); 393 /* lfo1 volume & freq */ 394 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); 395 /* lfo2 pitch & freq */ 396 set_fm2frq2(hw, vp); 397 398 /* reverb and loop start (reverb 8bit, MSB) */ 399 temp = vp->reg.parm.reverb; 400 temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10; 401 LIMITMAX(temp, 255); 402 addr = vp->reg.loopstart; 403 snd_emu10k1_ptr_write(hw, PSST, vp->ch, (temp << 24) | addr); 404 405 /* chorus & loop end (chorus 8bit, MSB) */ 406 addr = vp->reg.loopend; 407 temp = vp->reg.parm.chorus; 408 temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10; 409 LIMITMAX(temp, 255); 410 temp = (temp <<24) | addr; 411 snd_emu10k1_ptr_write(hw, DSL, ch, temp); 412 413 /* clear filter delay memory */ 414 snd_emu10k1_ptr_write(hw, Z1, ch, 0); 415 snd_emu10k1_ptr_write(hw, Z2, ch, 0); 416 417 /* invalidate maps */ 418 temp = (hw->silent_page.addr << hw->address_mode) | (hw->address_mode ? MAP_PTI_MASK1 : MAP_PTI_MASK0); 419 snd_emu10k1_ptr_write(hw, MAPA, ch, temp); 420 snd_emu10k1_ptr_write(hw, MAPB, ch, temp); 421 #if 0 422 /* cache */ 423 { 424 unsigned int val, sample; 425 val = 32; 426 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) 427 sample = 0x80808080; 428 else { 429 sample = 0; 430 val *= 2; 431 } 432 433 /* cache */ 434 snd_emu10k1_ptr_write(hw, CCR, ch, 0x1c << 16); 435 snd_emu10k1_ptr_write(hw, CDE, ch, sample); 436 snd_emu10k1_ptr_write(hw, CDF, ch, sample); 437 438 /* invalidate maps */ 439 temp = ((unsigned int)hw->silent_page.addr << hw_address_mode) | (hw->address_mode ? MAP_PTI_MASK1 : MAP_PTI_MASK0); 440 snd_emu10k1_ptr_write(hw, MAPA, ch, temp); 441 snd_emu10k1_ptr_write(hw, MAPB, ch, temp); 442 443 /* fill cache */ 444 val -= 4; 445 val <<= 25; 446 val |= 0x1c << 16; 447 snd_emu10k1_ptr_write(hw, CCR, ch, val); 448 } 449 #endif 450 451 /* Q & current address (Q 4bit value, MSB) */ 452 addr = vp->reg.start; 453 temp = vp->reg.parm.filterQ; 454 temp = (temp<<28) | addr; 455 if (vp->apitch < 0xe400) 456 temp |= CCCA_INTERPROM_0; 457 else { 458 unsigned int shift = (vp->apitch - 0xe000) >> 10; 459 temp |= shift << 25; 460 } 461 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) 462 temp |= CCCA_8BITSELECT; 463 snd_emu10k1_ptr_write(hw, CCCA, ch, temp); 464 465 /* reset volume */ 466 temp = (unsigned int)vp->vtarget << 16; 467 snd_emu10k1_ptr_write(hw, VTFT, ch, temp | vp->ftarget); 468 snd_emu10k1_ptr_write(hw, CVCF, ch, temp | 0xff00); 469 return 0; 470 } 471 472 /* 473 * Start envelope 474 */ 475 static void 476 trigger_voice(struct snd_emux_voice *vp) 477 { 478 unsigned int temp, ptarget; 479 struct snd_emu10k1 *hw; 480 struct snd_emu10k1_memblk *emem; 481 482 hw = vp->hw; 483 484 emem = (struct snd_emu10k1_memblk *)vp->block; 485 if (! emem || emem->mapped_page < 0) 486 return; /* not mapped */ 487 488 #if 0 489 ptarget = (unsigned int)vp->ptarget << 16; 490 #else 491 ptarget = IP_TO_CP(vp->apitch); 492 #endif 493 /* set pitch target and pan (volume) */ 494 temp = ptarget | (vp->apan << 8) | vp->aaux; 495 snd_emu10k1_ptr_write(hw, PTRX, vp->ch, temp); 496 497 /* pitch target */ 498 snd_emu10k1_ptr_write(hw, CPF, vp->ch, ptarget); 499 500 /* trigger voice */ 501 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, vp->reg.parm.voldcysus|DCYSUSV_CHANNELENABLE_MASK); 502 } 503 504 #define MOD_SENSE 18 505 506 /* set lfo1 modulation height and cutoff */ 507 static void 508 set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 509 { 510 unsigned short fmmod; 511 short pitch; 512 unsigned char cutoff; 513 int modulation; 514 515 pitch = (char)(vp->reg.parm.fmmod>>8); 516 cutoff = (vp->reg.parm.fmmod & 0xff); 517 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 518 pitch += (MOD_SENSE * modulation) / 1200; 519 LIMITVALUE(pitch, -128, 127); 520 fmmod = ((unsigned char)pitch<<8) | cutoff; 521 snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, fmmod); 522 } 523 524 /* set lfo2 pitch & frequency */ 525 static void 526 set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 527 { 528 unsigned short fm2frq2; 529 short pitch; 530 unsigned char freq; 531 int modulation; 532 533 pitch = (char)(vp->reg.parm.fm2frq2>>8); 534 freq = vp->reg.parm.fm2frq2 & 0xff; 535 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 536 pitch += (MOD_SENSE * modulation) / 1200; 537 LIMITVALUE(pitch, -128, 127); 538 fm2frq2 = ((unsigned char)pitch<<8) | freq; 539 snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, fm2frq2); 540 } 541 542 /* set filterQ */ 543 static void 544 set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 545 { 546 unsigned int val; 547 val = snd_emu10k1_ptr_read(hw, CCCA, vp->ch) & ~CCCA_RESONANCE; 548 val |= (vp->reg.parm.filterQ << 28); 549 snd_emu10k1_ptr_write(hw, CCCA, vp->ch, val); 550 } 551