sb16.c (38245B)
1 /* 2 * QEMU Soundblaster 16 emulation 3 * 4 * Copyright (c) 2003-2005 Vassili Karpov (malc) 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #include "qemu/osdep.h" 26 #include "hw/audio/soundhw.h" 27 #include "audio/audio.h" 28 #include "hw/irq.h" 29 #include "hw/isa/isa.h" 30 #include "hw/qdev-properties.h" 31 #include "migration/vmstate.h" 32 #include "qemu/timer.h" 33 #include "qemu/host-utils.h" 34 #include "qemu/log.h" 35 #include "qemu/module.h" 36 #include "qapi/error.h" 37 #include "qom/object.h" 38 39 #define dolog(...) AUD_log ("sb16", __VA_ARGS__) 40 41 /* #define DEBUG */ 42 /* #define DEBUG_SB16_MOST */ 43 44 #ifdef DEBUG 45 #define ldebug(...) dolog (__VA_ARGS__) 46 #else 47 #define ldebug(...) 48 #endif 49 50 static const char e3[] = "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992."; 51 52 #define TYPE_SB16 "sb16" 53 OBJECT_DECLARE_SIMPLE_TYPE(SB16State, SB16) 54 55 struct SB16State { 56 ISADevice parent_obj; 57 58 QEMUSoundCard card; 59 qemu_irq pic; 60 uint32_t irq; 61 uint32_t dma; 62 uint32_t hdma; 63 uint32_t port; 64 uint32_t ver; 65 IsaDma *isa_dma; 66 IsaDma *isa_hdma; 67 68 int in_index; 69 int out_data_len; 70 int fmt_stereo; 71 int fmt_signed; 72 int fmt_bits; 73 AudioFormat fmt; 74 int dma_auto; 75 int block_size; 76 int fifo; 77 int freq; 78 int time_const; 79 int speaker; 80 int needed_bytes; 81 int cmd; 82 int use_hdma; 83 int highspeed; 84 int can_write; 85 86 int v2x6; 87 88 uint8_t csp_param; 89 uint8_t csp_value; 90 uint8_t csp_mode; 91 uint8_t csp_regs[256]; 92 uint8_t csp_index; 93 uint8_t csp_reg83[4]; 94 int csp_reg83r; 95 int csp_reg83w; 96 97 uint8_t in2_data[10]; 98 uint8_t out_data[50]; 99 uint8_t test_reg; 100 uint8_t last_read_byte; 101 int nzero; 102 103 int left_till_irq; 104 105 int dma_running; 106 int bytes_per_second; 107 int align; 108 int audio_free; 109 SWVoiceOut *voice; 110 111 QEMUTimer *aux_ts; 112 /* mixer state */ 113 int mixer_nreg; 114 uint8_t mixer_regs[256]; 115 PortioList portio_list; 116 }; 117 118 #define SAMPLE_RATE_MIN 5000 119 #define SAMPLE_RATE_MAX 45000 120 121 static void SB_audio_callback (void *opaque, int free); 122 123 static int magic_of_irq (int irq) 124 { 125 switch (irq) { 126 case 5: 127 return 2; 128 case 7: 129 return 4; 130 case 9: 131 return 1; 132 case 10: 133 return 8; 134 default: 135 qemu_log_mask(LOG_GUEST_ERROR, "bad irq %d\n", irq); 136 return 2; 137 } 138 } 139 140 static int irq_of_magic (int magic) 141 { 142 switch (magic) { 143 case 1: 144 return 9; 145 case 2: 146 return 5; 147 case 4: 148 return 7; 149 case 8: 150 return 10; 151 default: 152 qemu_log_mask(LOG_GUEST_ERROR, "bad irq magic %d\n", magic); 153 return -1; 154 } 155 } 156 157 #if 0 158 static void log_dsp (SB16State *dsp) 159 { 160 ldebug ("%s:%s:%d:%s:dmasize=%d:freq=%d:const=%d:speaker=%d\n", 161 dsp->fmt_stereo ? "Stereo" : "Mono", 162 dsp->fmt_signed ? "Signed" : "Unsigned", 163 dsp->fmt_bits, 164 dsp->dma_auto ? "Auto" : "Single", 165 dsp->block_size, 166 dsp->freq, 167 dsp->time_const, 168 dsp->speaker); 169 } 170 #endif 171 172 static void speaker (SB16State *s, int on) 173 { 174 s->speaker = on; 175 /* AUD_enable (s->voice, on); */ 176 } 177 178 static void control (SB16State *s, int hold) 179 { 180 int dma = s->use_hdma ? s->hdma : s->dma; 181 IsaDma *isa_dma = s->use_hdma ? s->isa_hdma : s->isa_dma; 182 IsaDmaClass *k = ISADMA_GET_CLASS(isa_dma); 183 s->dma_running = hold; 184 185 ldebug ("hold %d high %d dma %d\n", hold, s->use_hdma, dma); 186 187 if (hold) { 188 k->hold_DREQ(isa_dma, dma); 189 AUD_set_active_out (s->voice, 1); 190 } 191 else { 192 k->release_DREQ(isa_dma, dma); 193 AUD_set_active_out (s->voice, 0); 194 } 195 } 196 197 static void aux_timer (void *opaque) 198 { 199 SB16State *s = opaque; 200 s->can_write = 1; 201 qemu_irq_raise (s->pic); 202 } 203 204 #define DMA8_AUTO 1 205 #define DMA8_HIGH 2 206 207 static void continue_dma8 (SB16State *s) 208 { 209 if (s->freq > 0) { 210 struct audsettings as; 211 212 s->audio_free = 0; 213 214 as.freq = s->freq; 215 as.nchannels = 1 << s->fmt_stereo; 216 as.fmt = s->fmt; 217 as.endianness = 0; 218 219 s->voice = AUD_open_out ( 220 &s->card, 221 s->voice, 222 "sb16", 223 s, 224 SB_audio_callback, 225 &as 226 ); 227 } 228 229 control (s, 1); 230 } 231 232 static inline int restrict_sampling_rate(int freq) 233 { 234 if (freq < SAMPLE_RATE_MIN) { 235 qemu_log_mask(LOG_GUEST_ERROR, 236 "sampling range too low: %d, increasing to %u\n", 237 freq, SAMPLE_RATE_MIN); 238 return SAMPLE_RATE_MIN; 239 } else if (freq > SAMPLE_RATE_MAX) { 240 qemu_log_mask(LOG_GUEST_ERROR, 241 "sampling range too high: %d, decreasing to %u\n", 242 freq, SAMPLE_RATE_MAX); 243 return SAMPLE_RATE_MAX; 244 } else { 245 return freq; 246 } 247 } 248 249 static void dma_cmd8 (SB16State *s, int mask, int dma_len) 250 { 251 s->fmt = AUDIO_FORMAT_U8; 252 s->use_hdma = 0; 253 s->fmt_bits = 8; 254 s->fmt_signed = 0; 255 s->fmt_stereo = (s->mixer_regs[0x0e] & 2) != 0; 256 if (-1 == s->time_const) { 257 if (s->freq <= 0) 258 s->freq = 11025; 259 } 260 else { 261 int tmp = (256 - s->time_const); 262 s->freq = (1000000 + (tmp / 2)) / tmp; 263 } 264 s->freq = restrict_sampling_rate(s->freq); 265 266 if (dma_len != -1) { 267 s->block_size = dma_len << s->fmt_stereo; 268 } 269 else { 270 /* This is apparently the only way to make both Act1/PL 271 and SecondReality/FC work 272 273 Act1 sets block size via command 0x48 and it's an odd number 274 SR does the same with even number 275 Both use stereo, and Creatives own documentation states that 276 0x48 sets block size in bytes less one.. go figure */ 277 s->block_size &= ~s->fmt_stereo; 278 } 279 280 s->freq >>= s->fmt_stereo; 281 s->left_till_irq = s->block_size; 282 s->bytes_per_second = (s->freq << s->fmt_stereo); 283 /* s->highspeed = (mask & DMA8_HIGH) != 0; */ 284 s->dma_auto = (mask & DMA8_AUTO) != 0; 285 s->align = (1 << s->fmt_stereo) - 1; 286 287 if (s->block_size & s->align) { 288 qemu_log_mask(LOG_GUEST_ERROR, "warning: misaligned block size %d," 289 " alignment %d\n", s->block_size, s->align + 1); 290 } 291 292 ldebug ("freq %d, stereo %d, sign %d, bits %d, " 293 "dma %d, auto %d, fifo %d, high %d\n", 294 s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits, 295 s->block_size, s->dma_auto, s->fifo, s->highspeed); 296 297 continue_dma8 (s); 298 speaker (s, 1); 299 } 300 301 static void dma_cmd (SB16State *s, uint8_t cmd, uint8_t d0, int dma_len) 302 { 303 s->use_hdma = cmd < 0xc0; 304 s->fifo = (cmd >> 1) & 1; 305 s->dma_auto = (cmd >> 2) & 1; 306 s->fmt_signed = (d0 >> 4) & 1; 307 s->fmt_stereo = (d0 >> 5) & 1; 308 309 switch (cmd >> 4) { 310 case 11: 311 s->fmt_bits = 16; 312 break; 313 314 case 12: 315 s->fmt_bits = 8; 316 break; 317 } 318 319 if (-1 != s->time_const) { 320 #if 1 321 int tmp = 256 - s->time_const; 322 s->freq = (1000000 + (tmp / 2)) / tmp; 323 #else 324 /* s->freq = 1000000 / ((255 - s->time_const) << s->fmt_stereo); */ 325 s->freq = 1000000 / ((255 - s->time_const)); 326 #endif 327 s->time_const = -1; 328 } 329 330 s->block_size = dma_len + 1; 331 s->block_size <<= (s->fmt_bits == 16); 332 if (!s->dma_auto) { 333 /* It is clear that for DOOM and auto-init this value 334 shouldn't take stereo into account, while Miles Sound Systems 335 setsound.exe with single transfer mode wouldn't work without it 336 wonders of SB16 yet again */ 337 s->block_size <<= s->fmt_stereo; 338 } 339 340 ldebug ("freq %d, stereo %d, sign %d, bits %d, " 341 "dma %d, auto %d, fifo %d, high %d\n", 342 s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits, 343 s->block_size, s->dma_auto, s->fifo, s->highspeed); 344 345 if (16 == s->fmt_bits) { 346 if (s->fmt_signed) { 347 s->fmt = AUDIO_FORMAT_S16; 348 } 349 else { 350 s->fmt = AUDIO_FORMAT_U16; 351 } 352 } 353 else { 354 if (s->fmt_signed) { 355 s->fmt = AUDIO_FORMAT_S8; 356 } 357 else { 358 s->fmt = AUDIO_FORMAT_U8; 359 } 360 } 361 362 s->left_till_irq = s->block_size; 363 364 s->bytes_per_second = (s->freq << s->fmt_stereo) << (s->fmt_bits == 16); 365 s->highspeed = 0; 366 s->align = (1 << (s->fmt_stereo + (s->fmt_bits == 16))) - 1; 367 if (s->block_size & s->align) { 368 qemu_log_mask(LOG_GUEST_ERROR, "warning: misaligned block size %d," 369 " alignment %d\n", s->block_size, s->align + 1); 370 } 371 372 if (s->freq) { 373 struct audsettings as; 374 375 s->audio_free = 0; 376 377 as.freq = s->freq; 378 as.nchannels = 1 << s->fmt_stereo; 379 as.fmt = s->fmt; 380 as.endianness = 0; 381 382 s->voice = AUD_open_out ( 383 &s->card, 384 s->voice, 385 "sb16", 386 s, 387 SB_audio_callback, 388 &as 389 ); 390 } 391 392 control (s, 1); 393 speaker (s, 1); 394 } 395 396 static inline void dsp_out_data (SB16State *s, uint8_t val) 397 { 398 ldebug ("outdata %#x\n", val); 399 if ((size_t) s->out_data_len < sizeof (s->out_data)) { 400 s->out_data[s->out_data_len++] = val; 401 } 402 } 403 404 static inline uint8_t dsp_get_data (SB16State *s) 405 { 406 if (s->in_index) { 407 return s->in2_data[--s->in_index]; 408 } 409 else { 410 dolog ("buffer underflow\n"); 411 return 0; 412 } 413 } 414 415 static void command (SB16State *s, uint8_t cmd) 416 { 417 ldebug ("command %#x\n", cmd); 418 419 if (cmd > 0xaf && cmd < 0xd0) { 420 if (cmd & 8) { 421 qemu_log_mask(LOG_UNIMP, "ADC not yet supported (command %#x)\n", 422 cmd); 423 } 424 425 switch (cmd >> 4) { 426 case 11: 427 case 12: 428 break; 429 default: 430 qemu_log_mask(LOG_GUEST_ERROR, "%#x wrong bits\n", cmd); 431 } 432 s->needed_bytes = 3; 433 } 434 else { 435 s->needed_bytes = 0; 436 437 switch (cmd) { 438 case 0x03: 439 dsp_out_data (s, 0x10); /* s->csp_param); */ 440 goto warn; 441 442 case 0x04: 443 s->needed_bytes = 1; 444 goto warn; 445 446 case 0x05: 447 s->needed_bytes = 2; 448 goto warn; 449 450 case 0x08: 451 /* __asm__ ("int3"); */ 452 goto warn; 453 454 case 0x0e: 455 s->needed_bytes = 2; 456 goto warn; 457 458 case 0x09: 459 dsp_out_data (s, 0xf8); 460 goto warn; 461 462 case 0x0f: 463 s->needed_bytes = 1; 464 goto warn; 465 466 case 0x10: 467 s->needed_bytes = 1; 468 goto warn; 469 470 case 0x14: 471 s->needed_bytes = 2; 472 s->block_size = 0; 473 break; 474 475 case 0x1c: /* Auto-Initialize DMA DAC, 8-bit */ 476 dma_cmd8 (s, DMA8_AUTO, -1); 477 break; 478 479 case 0x20: /* Direct ADC, Juice/PL */ 480 dsp_out_data (s, 0xff); 481 goto warn; 482 483 case 0x35: 484 qemu_log_mask(LOG_UNIMP, "0x35 - MIDI command not implemented\n"); 485 break; 486 487 case 0x40: 488 s->freq = -1; 489 s->time_const = -1; 490 s->needed_bytes = 1; 491 break; 492 493 case 0x41: 494 s->freq = -1; 495 s->time_const = -1; 496 s->needed_bytes = 2; 497 break; 498 499 case 0x42: 500 s->freq = -1; 501 s->time_const = -1; 502 s->needed_bytes = 2; 503 goto warn; 504 505 case 0x45: 506 dsp_out_data (s, 0xaa); 507 goto warn; 508 509 case 0x47: /* Continue Auto-Initialize DMA 16bit */ 510 break; 511 512 case 0x48: 513 s->needed_bytes = 2; 514 break; 515 516 case 0x74: 517 s->needed_bytes = 2; /* DMA DAC, 4-bit ADPCM */ 518 qemu_log_mask(LOG_UNIMP, "0x75 - DMA DAC, 4-bit ADPCM not" 519 " implemented\n"); 520 break; 521 522 case 0x75: /* DMA DAC, 4-bit ADPCM Reference */ 523 s->needed_bytes = 2; 524 qemu_log_mask(LOG_UNIMP, "0x74 - DMA DAC, 4-bit ADPCM Reference not" 525 " implemented\n"); 526 break; 527 528 case 0x76: /* DMA DAC, 2.6-bit ADPCM */ 529 s->needed_bytes = 2; 530 qemu_log_mask(LOG_UNIMP, "0x74 - DMA DAC, 2.6-bit ADPCM not" 531 " implemented\n"); 532 break; 533 534 case 0x77: /* DMA DAC, 2.6-bit ADPCM Reference */ 535 s->needed_bytes = 2; 536 qemu_log_mask(LOG_UNIMP, "0x74 - DMA DAC, 2.6-bit ADPCM Reference" 537 " not implemented\n"); 538 break; 539 540 case 0x7d: 541 qemu_log_mask(LOG_UNIMP, "0x7d - Autio-Initialize DMA DAC, 4-bit" 542 " ADPCM Reference\n"); 543 qemu_log_mask(LOG_UNIMP, "not implemented\n"); 544 break; 545 546 case 0x7f: 547 qemu_log_mask(LOG_UNIMP, "0x7d - Autio-Initialize DMA DAC, 2.6-bit" 548 " ADPCM Reference\n"); 549 qemu_log_mask(LOG_UNIMP, "not implemented\n"); 550 break; 551 552 case 0x80: 553 s->needed_bytes = 2; 554 break; 555 556 case 0x90: 557 case 0x91: 558 dma_cmd8 (s, ((cmd & 1) == 0) | DMA8_HIGH, -1); 559 break; 560 561 case 0xd0: /* halt DMA operation. 8bit */ 562 control (s, 0); 563 break; 564 565 case 0xd1: /* speaker on */ 566 speaker (s, 1); 567 break; 568 569 case 0xd3: /* speaker off */ 570 speaker (s, 0); 571 break; 572 573 case 0xd4: /* continue DMA operation. 8bit */ 574 /* KQ6 (or maybe Sierras audblst.drv in general) resets 575 the frequency between halt/continue */ 576 continue_dma8 (s); 577 break; 578 579 case 0xd5: /* halt DMA operation. 16bit */ 580 control (s, 0); 581 break; 582 583 case 0xd6: /* continue DMA operation. 16bit */ 584 control (s, 1); 585 break; 586 587 case 0xd9: /* exit auto-init DMA after this block. 16bit */ 588 s->dma_auto = 0; 589 break; 590 591 case 0xda: /* exit auto-init DMA after this block. 8bit */ 592 s->dma_auto = 0; 593 break; 594 595 case 0xe0: /* DSP identification */ 596 s->needed_bytes = 1; 597 break; 598 599 case 0xe1: 600 dsp_out_data (s, s->ver & 0xff); 601 dsp_out_data (s, s->ver >> 8); 602 break; 603 604 case 0xe2: 605 s->needed_bytes = 1; 606 goto warn; 607 608 case 0xe3: 609 { 610 int i; 611 for (i = sizeof (e3) - 1; i >= 0; --i) 612 dsp_out_data (s, e3[i]); 613 } 614 break; 615 616 case 0xe4: /* write test reg */ 617 s->needed_bytes = 1; 618 break; 619 620 case 0xe7: 621 qemu_log_mask(LOG_UNIMP, "Attempt to probe for ESS (0xe7)?\n"); 622 break; 623 624 case 0xe8: /* read test reg */ 625 dsp_out_data (s, s->test_reg); 626 break; 627 628 case 0xf2: 629 case 0xf3: 630 dsp_out_data (s, 0xaa); 631 s->mixer_regs[0x82] |= (cmd == 0xf2) ? 1 : 2; 632 qemu_irq_raise (s->pic); 633 break; 634 635 case 0xf9: 636 s->needed_bytes = 1; 637 goto warn; 638 639 case 0xfa: 640 dsp_out_data (s, 0); 641 goto warn; 642 643 case 0xfc: /* FIXME */ 644 dsp_out_data (s, 0); 645 goto warn; 646 647 default: 648 qemu_log_mask(LOG_UNIMP, "Unrecognized command %#x\n", cmd); 649 break; 650 } 651 } 652 653 if (!s->needed_bytes) { 654 ldebug ("\n"); 655 } 656 657 exit: 658 if (!s->needed_bytes) { 659 s->cmd = -1; 660 } 661 else { 662 s->cmd = cmd; 663 } 664 return; 665 666 warn: 667 qemu_log_mask(LOG_UNIMP, "warning: command %#x,%d is not truly understood" 668 " yet\n", cmd, s->needed_bytes); 669 goto exit; 670 671 } 672 673 static uint16_t dsp_get_lohi (SB16State *s) 674 { 675 uint8_t hi = dsp_get_data (s); 676 uint8_t lo = dsp_get_data (s); 677 return (hi << 8) | lo; 678 } 679 680 static uint16_t dsp_get_hilo (SB16State *s) 681 { 682 uint8_t lo = dsp_get_data (s); 683 uint8_t hi = dsp_get_data (s); 684 return (hi << 8) | lo; 685 } 686 687 static void complete (SB16State *s) 688 { 689 int d0, d1, d2; 690 ldebug ("complete command %#x, in_index %d, needed_bytes %d\n", 691 s->cmd, s->in_index, s->needed_bytes); 692 693 if (s->cmd > 0xaf && s->cmd < 0xd0) { 694 d2 = dsp_get_data (s); 695 d1 = dsp_get_data (s); 696 d0 = dsp_get_data (s); 697 698 if (s->cmd & 8) { 699 dolog ("ADC params cmd = %#x d0 = %d, d1 = %d, d2 = %d\n", 700 s->cmd, d0, d1, d2); 701 } 702 else { 703 ldebug ("cmd = %#x d0 = %d, d1 = %d, d2 = %d\n", 704 s->cmd, d0, d1, d2); 705 dma_cmd (s, s->cmd, d0, d1 + (d2 << 8)); 706 } 707 } 708 else { 709 switch (s->cmd) { 710 case 0x04: 711 s->csp_mode = dsp_get_data (s); 712 s->csp_reg83r = 0; 713 s->csp_reg83w = 0; 714 ldebug ("CSP command 0x04: mode=%#x\n", s->csp_mode); 715 break; 716 717 case 0x05: 718 s->csp_param = dsp_get_data (s); 719 s->csp_value = dsp_get_data (s); 720 ldebug ("CSP command 0x05: param=%#x value=%#x\n", 721 s->csp_param, 722 s->csp_value); 723 break; 724 725 case 0x0e: 726 d0 = dsp_get_data (s); 727 d1 = dsp_get_data (s); 728 ldebug ("write CSP register %d <- %#x\n", d1, d0); 729 if (d1 == 0x83) { 730 ldebug ("0x83[%d] <- %#x\n", s->csp_reg83r, d0); 731 s->csp_reg83[s->csp_reg83r % 4] = d0; 732 s->csp_reg83r += 1; 733 } 734 else { 735 s->csp_regs[d1] = d0; 736 } 737 break; 738 739 case 0x0f: 740 d0 = dsp_get_data (s); 741 ldebug ("read CSP register %#x -> %#x, mode=%#x\n", 742 d0, s->csp_regs[d0], s->csp_mode); 743 if (d0 == 0x83) { 744 ldebug ("0x83[%d] -> %#x\n", 745 s->csp_reg83w, 746 s->csp_reg83[s->csp_reg83w % 4]); 747 dsp_out_data (s, s->csp_reg83[s->csp_reg83w % 4]); 748 s->csp_reg83w += 1; 749 } 750 else { 751 dsp_out_data (s, s->csp_regs[d0]); 752 } 753 break; 754 755 case 0x10: 756 d0 = dsp_get_data (s); 757 dolog ("cmd 0x10 d0=%#x\n", d0); 758 break; 759 760 case 0x14: 761 dma_cmd8 (s, 0, dsp_get_lohi (s) + 1); 762 break; 763 764 case 0x40: 765 s->time_const = dsp_get_data (s); 766 ldebug ("set time const %d\n", s->time_const); 767 break; 768 769 case 0x41: 770 case 0x42: 771 /* 772 * 0x41 is documented as setting the output sample rate, 773 * and 0x42 the input sample rate, but in fact SB16 hardware 774 * seems to have only a single sample rate under the hood, 775 * and FT2 sets output freq with this (go figure). Compare: 776 * http://homepages.cae.wisc.edu/~brodskye/sb16doc/sb16doc.html#SamplingRate 777 */ 778 s->freq = restrict_sampling_rate(dsp_get_hilo(s)); 779 ldebug ("set freq %d\n", s->freq); 780 break; 781 782 case 0x48: 783 s->block_size = dsp_get_lohi (s) + 1; 784 ldebug ("set dma block len %d\n", s->block_size); 785 break; 786 787 case 0x74: 788 case 0x75: 789 case 0x76: 790 case 0x77: 791 /* ADPCM stuff, ignore */ 792 break; 793 794 case 0x80: 795 { 796 int freq, samples, bytes; 797 int64_t ticks; 798 799 freq = s->freq > 0 ? s->freq : 11025; 800 samples = dsp_get_lohi (s) + 1; 801 bytes = samples << s->fmt_stereo << (s->fmt_bits == 16); 802 ticks = muldiv64(bytes, NANOSECONDS_PER_SECOND, freq); 803 if (ticks < NANOSECONDS_PER_SECOND / 1024) { 804 qemu_irq_raise (s->pic); 805 } 806 else { 807 if (s->aux_ts) { 808 timer_mod ( 809 s->aux_ts, 810 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ticks 811 ); 812 } 813 } 814 ldebug ("mix silence %d %d %" PRId64 "\n", samples, bytes, ticks); 815 } 816 break; 817 818 case 0xe0: 819 d0 = dsp_get_data (s); 820 s->out_data_len = 0; 821 ldebug ("E0 data = %#x\n", d0); 822 dsp_out_data (s, ~d0); 823 break; 824 825 case 0xe2: 826 #ifdef DEBUG 827 d0 = dsp_get_data (s); 828 dolog ("E2 = %#x\n", d0); 829 #endif 830 break; 831 832 case 0xe4: 833 s->test_reg = dsp_get_data (s); 834 break; 835 836 case 0xf9: 837 d0 = dsp_get_data (s); 838 ldebug ("command 0xf9 with %#x\n", d0); 839 switch (d0) { 840 case 0x0e: 841 dsp_out_data (s, 0xff); 842 break; 843 844 case 0x0f: 845 dsp_out_data (s, 0x07); 846 break; 847 848 case 0x37: 849 dsp_out_data (s, 0x38); 850 break; 851 852 default: 853 dsp_out_data (s, 0x00); 854 break; 855 } 856 break; 857 858 default: 859 qemu_log_mask(LOG_UNIMP, "complete: unrecognized command %#x\n", 860 s->cmd); 861 return; 862 } 863 } 864 865 ldebug ("\n"); 866 s->cmd = -1; 867 } 868 869 static void legacy_reset (SB16State *s) 870 { 871 struct audsettings as; 872 873 s->freq = 11025; 874 s->fmt_signed = 0; 875 s->fmt_bits = 8; 876 s->fmt_stereo = 0; 877 878 as.freq = s->freq; 879 as.nchannels = 1; 880 as.fmt = AUDIO_FORMAT_U8; 881 as.endianness = 0; 882 883 s->voice = AUD_open_out ( 884 &s->card, 885 s->voice, 886 "sb16", 887 s, 888 SB_audio_callback, 889 &as 890 ); 891 892 /* Not sure about that... */ 893 /* AUD_set_active_out (s->voice, 1); */ 894 } 895 896 static void reset (SB16State *s) 897 { 898 qemu_irq_lower (s->pic); 899 if (s->dma_auto) { 900 qemu_irq_raise (s->pic); 901 qemu_irq_lower (s->pic); 902 } 903 904 s->mixer_regs[0x82] = 0; 905 s->dma_auto = 0; 906 s->in_index = 0; 907 s->out_data_len = 0; 908 s->left_till_irq = 0; 909 s->needed_bytes = 0; 910 s->block_size = -1; 911 s->nzero = 0; 912 s->highspeed = 0; 913 s->v2x6 = 0; 914 s->cmd = -1; 915 916 dsp_out_data (s, 0xaa); 917 speaker (s, 0); 918 control (s, 0); 919 legacy_reset (s); 920 } 921 922 static void dsp_write(void *opaque, uint32_t nport, uint32_t val) 923 { 924 SB16State *s = opaque; 925 int iport; 926 927 iport = nport - s->port; 928 929 ldebug ("write %#x <- %#x\n", nport, val); 930 switch (iport) { 931 case 0x06: 932 switch (val) { 933 case 0x00: 934 if (s->v2x6 == 1) { 935 reset (s); 936 } 937 s->v2x6 = 0; 938 break; 939 940 case 0x01: 941 case 0x03: /* FreeBSD kludge */ 942 s->v2x6 = 1; 943 break; 944 945 case 0xc6: 946 s->v2x6 = 0; /* Prince of Persia, csp.sys, diagnose.exe */ 947 break; 948 949 case 0xb8: /* Panic */ 950 reset (s); 951 break; 952 953 case 0x39: 954 dsp_out_data (s, 0x38); 955 reset (s); 956 s->v2x6 = 0x39; 957 break; 958 959 default: 960 s->v2x6 = val; 961 break; 962 } 963 break; 964 965 case 0x0c: /* write data or command | write status */ 966 /* if (s->highspeed) */ 967 /* break; */ 968 969 if (s->needed_bytes == 0) { 970 command (s, val); 971 #if 0 972 if (0 == s->needed_bytes) { 973 log_dsp (s); 974 } 975 #endif 976 } 977 else { 978 if (s->in_index == sizeof (s->in2_data)) { 979 dolog ("in data overrun\n"); 980 } 981 else { 982 s->in2_data[s->in_index++] = val; 983 if (s->in_index == s->needed_bytes) { 984 s->needed_bytes = 0; 985 complete (s); 986 #if 0 987 log_dsp (s); 988 #endif 989 } 990 } 991 } 992 break; 993 994 default: 995 ldebug ("(nport=%#x, val=%#x)\n", nport, val); 996 break; 997 } 998 } 999 1000 static uint32_t dsp_read(void *opaque, uint32_t nport) 1001 { 1002 SB16State *s = opaque; 1003 int iport, retval, ack = 0; 1004 1005 iport = nport - s->port; 1006 1007 switch (iport) { 1008 case 0x06: /* reset */ 1009 retval = 0xff; 1010 break; 1011 1012 case 0x0a: /* read data */ 1013 if (s->out_data_len) { 1014 retval = s->out_data[--s->out_data_len]; 1015 s->last_read_byte = retval; 1016 } 1017 else { 1018 if (s->cmd != -1) { 1019 dolog ("empty output buffer for command %#x\n", 1020 s->cmd); 1021 } 1022 retval = s->last_read_byte; 1023 /* goto error; */ 1024 } 1025 break; 1026 1027 case 0x0c: /* 0 can write */ 1028 retval = s->can_write ? 0 : 0x80; 1029 break; 1030 1031 case 0x0d: /* timer interrupt clear */ 1032 /* dolog ("timer interrupt clear\n"); */ 1033 retval = 0; 1034 break; 1035 1036 case 0x0e: /* data available status | irq 8 ack */ 1037 retval = (!s->out_data_len || s->highspeed) ? 0 : 0x80; 1038 if (s->mixer_regs[0x82] & 1) { 1039 ack = 1; 1040 s->mixer_regs[0x82] &= ~1; 1041 qemu_irq_lower (s->pic); 1042 } 1043 break; 1044 1045 case 0x0f: /* irq 16 ack */ 1046 retval = 0xff; 1047 if (s->mixer_regs[0x82] & 2) { 1048 ack = 1; 1049 s->mixer_regs[0x82] &= ~2; 1050 qemu_irq_lower (s->pic); 1051 } 1052 break; 1053 1054 default: 1055 goto error; 1056 } 1057 1058 if (!ack) { 1059 ldebug ("read %#x -> %#x\n", nport, retval); 1060 } 1061 1062 return retval; 1063 1064 error: 1065 dolog ("warning: dsp_read %#x error\n", nport); 1066 return 0xff; 1067 } 1068 1069 static void reset_mixer (SB16State *s) 1070 { 1071 int i; 1072 1073 memset (s->mixer_regs, 0xff, 0x7f); 1074 memset (s->mixer_regs + 0x83, 0xff, sizeof (s->mixer_regs) - 0x83); 1075 1076 s->mixer_regs[0x02] = 4; /* master volume 3bits */ 1077 s->mixer_regs[0x06] = 4; /* MIDI volume 3bits */ 1078 s->mixer_regs[0x08] = 0; /* CD volume 3bits */ 1079 s->mixer_regs[0x0a] = 0; /* voice volume 2bits */ 1080 1081 /* d5=input filt, d3=lowpass filt, d1,d2=input source */ 1082 s->mixer_regs[0x0c] = 0; 1083 1084 /* d5=output filt, d1=stereo switch */ 1085 s->mixer_regs[0x0e] = 0; 1086 1087 /* voice volume L d5,d7, R d1,d3 */ 1088 s->mixer_regs[0x04] = (4 << 5) | (4 << 1); 1089 /* master ... */ 1090 s->mixer_regs[0x22] = (4 << 5) | (4 << 1); 1091 /* MIDI ... */ 1092 s->mixer_regs[0x26] = (4 << 5) | (4 << 1); 1093 1094 for (i = 0x30; i < 0x48; i++) { 1095 s->mixer_regs[i] = 0x20; 1096 } 1097 } 1098 1099 static void mixer_write_indexb(void *opaque, uint32_t nport, uint32_t val) 1100 { 1101 SB16State *s = opaque; 1102 (void) nport; 1103 s->mixer_nreg = val; 1104 } 1105 1106 static void mixer_write_datab(void *opaque, uint32_t nport, uint32_t val) 1107 { 1108 SB16State *s = opaque; 1109 1110 (void) nport; 1111 ldebug ("mixer_write [%#x] <- %#x\n", s->mixer_nreg, val); 1112 1113 switch (s->mixer_nreg) { 1114 case 0x00: 1115 reset_mixer (s); 1116 break; 1117 1118 case 0x80: 1119 { 1120 int irq = irq_of_magic (val); 1121 ldebug ("setting irq to %d (val=%#x)\n", irq, val); 1122 if (irq > 0) { 1123 s->irq = irq; 1124 } 1125 } 1126 break; 1127 1128 case 0x81: 1129 { 1130 int dma, hdma; 1131 1132 dma = ctz32 (val & 0xf); 1133 hdma = ctz32 (val & 0xf0); 1134 if (dma != s->dma || hdma != s->hdma) { 1135 qemu_log_mask(LOG_GUEST_ERROR, "attempt to change DMA 8bit" 1136 " %d(%d), 16bit %d(%d) (val=%#x)\n", dma, s->dma, 1137 hdma, s->hdma, val); 1138 } 1139 #if 0 1140 s->dma = dma; 1141 s->hdma = hdma; 1142 #endif 1143 } 1144 break; 1145 1146 case 0x82: 1147 qemu_log_mask(LOG_GUEST_ERROR, "attempt to write into IRQ status" 1148 " register (val=%#x)\n", val); 1149 return; 1150 1151 default: 1152 if (s->mixer_nreg >= 0x80) { 1153 ldebug ("attempt to write mixer[%#x] <- %#x\n", s->mixer_nreg, val); 1154 } 1155 break; 1156 } 1157 1158 s->mixer_regs[s->mixer_nreg] = val; 1159 } 1160 1161 static uint32_t mixer_read(void *opaque, uint32_t nport) 1162 { 1163 SB16State *s = opaque; 1164 1165 (void) nport; 1166 #ifndef DEBUG_SB16_MOST 1167 if (s->mixer_nreg != 0x82) { 1168 ldebug ("mixer_read[%#x] -> %#x\n", 1169 s->mixer_nreg, s->mixer_regs[s->mixer_nreg]); 1170 } 1171 #else 1172 ldebug ("mixer_read[%#x] -> %#x\n", 1173 s->mixer_nreg, s->mixer_regs[s->mixer_nreg]); 1174 #endif 1175 return s->mixer_regs[s->mixer_nreg]; 1176 } 1177 1178 static int write_audio (SB16State *s, int nchan, int dma_pos, 1179 int dma_len, int len) 1180 { 1181 IsaDma *isa_dma = nchan == s->dma ? s->isa_dma : s->isa_hdma; 1182 IsaDmaClass *k = ISADMA_GET_CLASS(isa_dma); 1183 int temp, net; 1184 uint8_t tmpbuf[4096]; 1185 1186 temp = len; 1187 net = 0; 1188 1189 while (temp) { 1190 int left = dma_len - dma_pos; 1191 int copied; 1192 size_t to_copy; 1193 1194 to_copy = MIN (temp, left); 1195 if (to_copy > sizeof (tmpbuf)) { 1196 to_copy = sizeof (tmpbuf); 1197 } 1198 1199 copied = k->read_memory(isa_dma, nchan, tmpbuf, dma_pos, to_copy); 1200 copied = AUD_write (s->voice, tmpbuf, copied); 1201 1202 temp -= copied; 1203 dma_pos = (dma_pos + copied) % dma_len; 1204 net += copied; 1205 1206 if (!copied) { 1207 break; 1208 } 1209 } 1210 1211 return net; 1212 } 1213 1214 static int SB_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len) 1215 { 1216 SB16State *s = opaque; 1217 int till, copy, written, free; 1218 1219 if (s->block_size <= 0) { 1220 qemu_log_mask(LOG_GUEST_ERROR, "invalid block size=%d nchan=%d" 1221 " dma_pos=%d dma_len=%d\n", s->block_size, nchan, 1222 dma_pos, dma_len); 1223 return dma_pos; 1224 } 1225 1226 if (s->left_till_irq < 0) { 1227 s->left_till_irq = s->block_size; 1228 } 1229 1230 if (s->voice) { 1231 free = s->audio_free & ~s->align; 1232 if ((free <= 0) || !dma_len) { 1233 return dma_pos; 1234 } 1235 } 1236 else { 1237 free = dma_len; 1238 } 1239 1240 copy = free; 1241 till = s->left_till_irq; 1242 1243 #ifdef DEBUG_SB16_MOST 1244 dolog ("pos:%06d %d till:%d len:%d\n", 1245 dma_pos, free, till, dma_len); 1246 #endif 1247 1248 if (till <= copy) { 1249 if (s->dma_auto == 0) { 1250 copy = till; 1251 } 1252 } 1253 1254 written = write_audio (s, nchan, dma_pos, dma_len, copy); 1255 dma_pos = (dma_pos + written) % dma_len; 1256 s->left_till_irq -= written; 1257 1258 if (s->left_till_irq <= 0) { 1259 s->mixer_regs[0x82] |= (nchan & 4) ? 2 : 1; 1260 qemu_irq_raise (s->pic); 1261 if (s->dma_auto == 0) { 1262 control (s, 0); 1263 speaker (s, 0); 1264 } 1265 } 1266 1267 #ifdef DEBUG_SB16_MOST 1268 ldebug ("pos %5d free %5d size %5d till % 5d copy %5d written %5d size %5d\n", 1269 dma_pos, free, dma_len, s->left_till_irq, copy, written, 1270 s->block_size); 1271 #endif 1272 1273 while (s->left_till_irq <= 0) { 1274 s->left_till_irq = s->block_size + s->left_till_irq; 1275 } 1276 1277 return dma_pos; 1278 } 1279 1280 static void SB_audio_callback (void *opaque, int free) 1281 { 1282 SB16State *s = opaque; 1283 s->audio_free = free; 1284 } 1285 1286 static int sb16_post_load (void *opaque, int version_id) 1287 { 1288 SB16State *s = opaque; 1289 1290 if (s->voice) { 1291 AUD_close_out (&s->card, s->voice); 1292 s->voice = NULL; 1293 } 1294 1295 if (s->dma_running) { 1296 if (s->freq) { 1297 struct audsettings as; 1298 1299 s->audio_free = 0; 1300 1301 as.freq = s->freq; 1302 as.nchannels = 1 << s->fmt_stereo; 1303 as.fmt = s->fmt; 1304 as.endianness = 0; 1305 1306 s->voice = AUD_open_out ( 1307 &s->card, 1308 s->voice, 1309 "sb16", 1310 s, 1311 SB_audio_callback, 1312 &as 1313 ); 1314 } 1315 1316 control (s, 1); 1317 speaker (s, s->speaker); 1318 } 1319 return 0; 1320 } 1321 1322 static const VMStateDescription vmstate_sb16 = { 1323 .name = "sb16", 1324 .version_id = 1, 1325 .minimum_version_id = 1, 1326 .post_load = sb16_post_load, 1327 .fields = (VMStateField[]) { 1328 VMSTATE_UINT32 (irq, SB16State), 1329 VMSTATE_UINT32 (dma, SB16State), 1330 VMSTATE_UINT32 (hdma, SB16State), 1331 VMSTATE_UINT32 (port, SB16State), 1332 VMSTATE_UINT32 (ver, SB16State), 1333 VMSTATE_INT32 (in_index, SB16State), 1334 VMSTATE_INT32 (out_data_len, SB16State), 1335 VMSTATE_INT32 (fmt_stereo, SB16State), 1336 VMSTATE_INT32 (fmt_signed, SB16State), 1337 VMSTATE_INT32 (fmt_bits, SB16State), 1338 VMSTATE_UINT32 (fmt, SB16State), 1339 VMSTATE_INT32 (dma_auto, SB16State), 1340 VMSTATE_INT32 (block_size, SB16State), 1341 VMSTATE_INT32 (fifo, SB16State), 1342 VMSTATE_INT32 (freq, SB16State), 1343 VMSTATE_INT32 (time_const, SB16State), 1344 VMSTATE_INT32 (speaker, SB16State), 1345 VMSTATE_INT32 (needed_bytes, SB16State), 1346 VMSTATE_INT32 (cmd, SB16State), 1347 VMSTATE_INT32 (use_hdma, SB16State), 1348 VMSTATE_INT32 (highspeed, SB16State), 1349 VMSTATE_INT32 (can_write, SB16State), 1350 VMSTATE_INT32 (v2x6, SB16State), 1351 1352 VMSTATE_UINT8 (csp_param, SB16State), 1353 VMSTATE_UINT8 (csp_value, SB16State), 1354 VMSTATE_UINT8 (csp_mode, SB16State), 1355 VMSTATE_UINT8 (csp_param, SB16State), 1356 VMSTATE_BUFFER (csp_regs, SB16State), 1357 VMSTATE_UINT8 (csp_index, SB16State), 1358 VMSTATE_BUFFER (csp_reg83, SB16State), 1359 VMSTATE_INT32 (csp_reg83r, SB16State), 1360 VMSTATE_INT32 (csp_reg83w, SB16State), 1361 1362 VMSTATE_BUFFER (in2_data, SB16State), 1363 VMSTATE_BUFFER (out_data, SB16State), 1364 VMSTATE_UINT8 (test_reg, SB16State), 1365 VMSTATE_UINT8 (last_read_byte, SB16State), 1366 1367 VMSTATE_INT32 (nzero, SB16State), 1368 VMSTATE_INT32 (left_till_irq, SB16State), 1369 VMSTATE_INT32 (dma_running, SB16State), 1370 VMSTATE_INT32 (bytes_per_second, SB16State), 1371 VMSTATE_INT32 (align, SB16State), 1372 1373 VMSTATE_INT32 (mixer_nreg, SB16State), 1374 VMSTATE_BUFFER (mixer_regs, SB16State), 1375 1376 VMSTATE_END_OF_LIST () 1377 } 1378 }; 1379 1380 static const MemoryRegionPortio sb16_ioport_list[] = { 1381 { 4, 1, 1, .write = mixer_write_indexb }, 1382 { 5, 1, 1, .read = mixer_read, .write = mixer_write_datab }, 1383 { 6, 1, 1, .read = dsp_read, .write = dsp_write }, 1384 { 10, 1, 1, .read = dsp_read }, 1385 { 12, 1, 1, .write = dsp_write }, 1386 { 12, 4, 1, .read = dsp_read }, 1387 PORTIO_END_OF_LIST (), 1388 }; 1389 1390 1391 static void sb16_initfn (Object *obj) 1392 { 1393 SB16State *s = SB16 (obj); 1394 1395 s->cmd = -1; 1396 } 1397 1398 static void sb16_realizefn (DeviceState *dev, Error **errp) 1399 { 1400 ISADevice *isadev = ISA_DEVICE (dev); 1401 SB16State *s = SB16 (dev); 1402 IsaDmaClass *k; 1403 1404 s->isa_hdma = isa_get_dma(isa_bus_from_device(isadev), s->hdma); 1405 s->isa_dma = isa_get_dma(isa_bus_from_device(isadev), s->dma); 1406 if (!s->isa_dma || !s->isa_hdma) { 1407 error_setg(errp, "ISA controller does not support DMA"); 1408 return; 1409 } 1410 1411 s->pic = isa_get_irq(isadev, s->irq); 1412 1413 s->mixer_regs[0x80] = magic_of_irq (s->irq); 1414 s->mixer_regs[0x81] = (1 << s->dma) | (1 << s->hdma); 1415 s->mixer_regs[0x82] = 2 << 5; 1416 1417 s->csp_regs[5] = 1; 1418 s->csp_regs[9] = 0xf8; 1419 1420 reset_mixer (s); 1421 s->aux_ts = timer_new_ns(QEMU_CLOCK_VIRTUAL, aux_timer, s); 1422 if (!s->aux_ts) { 1423 error_setg(errp, "warning: Could not create auxiliary timer"); 1424 } 1425 1426 isa_register_portio_list(isadev, &s->portio_list, s->port, 1427 sb16_ioport_list, s, "sb16"); 1428 1429 k = ISADMA_GET_CLASS(s->isa_hdma); 1430 k->register_channel(s->isa_hdma, s->hdma, SB_read_DMA, s); 1431 1432 k = ISADMA_GET_CLASS(s->isa_dma); 1433 k->register_channel(s->isa_dma, s->dma, SB_read_DMA, s); 1434 1435 s->can_write = 1; 1436 1437 AUD_register_card ("sb16", &s->card); 1438 } 1439 1440 static Property sb16_properties[] = { 1441 DEFINE_AUDIO_PROPERTIES(SB16State, card), 1442 DEFINE_PROP_UINT32 ("version", SB16State, ver, 0x0405), /* 4.5 */ 1443 DEFINE_PROP_UINT32 ("iobase", SB16State, port, 0x220), 1444 DEFINE_PROP_UINT32 ("irq", SB16State, irq, 5), 1445 DEFINE_PROP_UINT32 ("dma", SB16State, dma, 1), 1446 DEFINE_PROP_UINT32 ("dma16", SB16State, hdma, 5), 1447 DEFINE_PROP_END_OF_LIST (), 1448 }; 1449 1450 static void sb16_class_initfn (ObjectClass *klass, void *data) 1451 { 1452 DeviceClass *dc = DEVICE_CLASS (klass); 1453 1454 dc->realize = sb16_realizefn; 1455 set_bit(DEVICE_CATEGORY_SOUND, dc->categories); 1456 dc->desc = "Creative Sound Blaster 16"; 1457 dc->vmsd = &vmstate_sb16; 1458 device_class_set_props(dc, sb16_properties); 1459 } 1460 1461 static const TypeInfo sb16_info = { 1462 .name = TYPE_SB16, 1463 .parent = TYPE_ISA_DEVICE, 1464 .instance_size = sizeof (SB16State), 1465 .instance_init = sb16_initfn, 1466 .class_init = sb16_class_initfn, 1467 }; 1468 1469 static void sb16_register_types (void) 1470 { 1471 type_register_static (&sb16_info); 1472 deprecated_register_soundhw("sb16", "Creative Sound Blaster 16", 1473 1, TYPE_SB16); 1474 } 1475 1476 type_init (sb16_register_types)