ac97.c 37.6 KB
Newer Older
balrog's avatar
balrog committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160
/*
 * Copyright (C) 2006 InnoTek Systemberatung GmbH
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License as published by the Free Software Foundation,
 * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
 * distribution. VirtualBox OSE is distributed in the hope that it will
 * be useful, but WITHOUT ANY WARRANTY of any kind.
 *
 * If you received this file as part of a commercial VirtualBox
 * distribution, then only the terms of your commercial VirtualBox
 * license agreement apply instead of the previous paragraph.
 */

#include "hw.h"
#include "audiodev.h"
#include "audio/audio.h"
#include "pci.h"

enum {
    AC97_Reset                     = 0x00,
    AC97_Master_Volume_Mute        = 0x02,
    AC97_Headphone_Volume_Mute     = 0x04,
    AC97_Master_Volume_Mono_Mute   = 0x06,
    AC97_Master_Tone_RL            = 0x08,
    AC97_PC_BEEP_Volume_Mute       = 0x0A,
    AC97_Phone_Volume_Mute         = 0x0C,
    AC97_Mic_Volume_Mute           = 0x0E,
    AC97_Line_In_Volume_Mute       = 0x10,
    AC97_CD_Volume_Mute            = 0x12,
    AC97_Video_Volume_Mute         = 0x14,
    AC97_Aux_Volume_Mute           = 0x16,
    AC97_PCM_Out_Volume_Mute       = 0x18,
    AC97_Record_Select             = 0x1A,
    AC97_Record_Gain_Mute          = 0x1C,
    AC97_Record_Gain_Mic_Mute      = 0x1E,
    AC97_General_Purpose           = 0x20,
    AC97_3D_Control                = 0x22,
    AC97_AC_97_RESERVED            = 0x24,
    AC97_Powerdown_Ctrl_Stat       = 0x26,
    AC97_Extended_Audio_ID         = 0x28,
    AC97_Extended_Audio_Ctrl_Stat  = 0x2A,
    AC97_PCM_Front_DAC_Rate        = 0x2C,
    AC97_PCM_Surround_DAC_Rate     = 0x2E,
    AC97_PCM_LFE_DAC_Rate          = 0x30,
    AC97_PCM_LR_ADC_Rate           = 0x32,
    AC97_MIC_ADC_Rate              = 0x34,
    AC97_6Ch_Vol_C_LFE_Mute        = 0x36,
    AC97_6Ch_Vol_L_R_Surround_Mute = 0x38,
    AC97_Vendor_Reserved           = 0x58,
    AC97_Vendor_ID1                = 0x7c,
    AC97_Vendor_ID2                = 0x7e
};

#define SOFT_VOLUME
#define SR_FIFOE 16             /* rwc */
#define SR_BCIS  8              /* rwc */
#define SR_LVBCI 4              /* rwc */
#define SR_CELV  2              /* ro */
#define SR_DCH   1              /* ro */
#define SR_VALID_MASK ((1 << 5) - 1)
#define SR_WCLEAR_MASK (SR_FIFOE | SR_BCIS | SR_LVBCI)
#define SR_RO_MASK (SR_DCH | SR_CELV)
#define SR_INT_MASK (SR_FIFOE | SR_BCIS | SR_LVBCI)

#define CR_IOCE  16             /* rw */
#define CR_FEIE  8              /* rw */
#define CR_LVBIE 4              /* rw */
#define CR_RR    2              /* rw */
#define CR_RPBM  1              /* rw */
#define CR_VALID_MASK ((1 << 5) - 1)
#define CR_DONT_CLEAR_MASK (CR_IOCE | CR_FEIE | CR_LVBIE)

#define GC_WR    4              /* rw */
#define GC_CR    2              /* rw */
#define GC_VALID_MASK ((1 << 6) - 1)

#define GS_MD3   (1<<17)        /* rw */
#define GS_AD3   (1<<16)        /* rw */
#define GS_RCS   (1<<15)        /* rwc */
#define GS_B3S12 (1<<14)        /* ro */
#define GS_B2S12 (1<<13)        /* ro */
#define GS_B1S12 (1<<12)        /* ro */
#define GS_S1R1  (1<<11)        /* rwc */
#define GS_S0R1  (1<<10)        /* rwc */
#define GS_S1CR  (1<<9)         /* ro */
#define GS_S0CR  (1<<8)         /* ro */
#define GS_MINT  (1<<7)         /* ro */
#define GS_POINT (1<<6)         /* ro */
#define GS_PIINT (1<<5)         /* ro */
#define GS_RSRVD ((1<<4)|(1<<3))
#define GS_MOINT (1<<2)         /* ro */
#define GS_MIINT (1<<1)         /* ro */
#define GS_GSCI  1              /* rwc */
#define GS_RO_MASK (GS_B3S12|                   \
                    GS_B2S12|                   \
                    GS_B1S12|                   \
                    GS_S1CR|                    \
                    GS_S0CR|                    \
                    GS_MINT|                    \
                    GS_POINT|                   \
                    GS_PIINT|                   \
                    GS_RSRVD|                   \
                    GS_MOINT|                   \
                    GS_MIINT)
#define GS_VALID_MASK ((1 << 18) - 1)
#define GS_WCLEAR_MASK (GS_RCS|GS_S1R1|GS_S0R1|GS_GSCI)

#define BD_IOC (1<<31)
#define BD_BUP (1<<30)

#define EACS_VRA 1
#define EACS_VRM 8

#define VOL_MASK 0x1f
#define MUTE_SHIFT 15

#define REC_MASK 7
enum {
    REC_MIC = 0,
    REC_CD,
    REC_VIDEO,
    REC_AUX,
    REC_LINE_IN,
    REC_STEREO_MIX,
    REC_MONO_MIX,
    REC_PHONE
};

typedef struct BD {
    uint32_t addr;
    uint32_t ctl_len;
} BD;

typedef struct AC97BusMasterRegs {
    uint32_t bdbar;             /* rw 0 */
    uint8_t civ;                /* ro 0 */
    uint8_t lvi;                /* rw 0 */
    uint16_t sr;                /* rw 1 */
    uint16_t picb;              /* ro 0 */
    uint8_t piv;                /* ro 0 */
    uint8_t cr;                 /* rw 0 */
    unsigned int bd_valid;
    BD bd;
} AC97BusMasterRegs;

typedef struct AC97LinkState {
    PCIDevice *pci_dev;
    QEMUSoundCard card;
    uint32_t glob_cnt;
    uint32_t glob_sta;
    uint32_t cas;
    uint32_t last_samp;
    AC97BusMasterRegs bm_regs[3];
    uint8_t mixer_data[256];
    SWVoiceIn *voice_pi;
    SWVoiceOut *voice_po;
    SWVoiceIn *voice_mc;
161
    int invalid_freq[3];
balrog's avatar
balrog committed
162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356
    uint8_t silence[128];
    uint32_t base[2];
    int bup_flag;
} AC97LinkState;

enum {
    BUP_SET = 1,
    BUP_LAST = 2
};

#ifdef DEBUG_AC97
#define dolog(...) AUD_log ("ac97", __VA_ARGS__)
#else
#define dolog(...)
#endif

typedef struct PCIAC97LinkState {
    PCIDevice dev;
    AC97LinkState ac97;
} PCIAC97LinkState;

#define MKREGS(prefix, start)                   \
enum {                                          \
    prefix ## _BDBAR = start,                   \
    prefix ## _CIV = start + 4,                 \
    prefix ## _LVI = start + 5,                 \
    prefix ## _SR = start + 6,                  \
    prefix ## _PICB = start + 8,                \
    prefix ## _PIV = start + 10,                \
    prefix ## _CR = start + 11                  \
}

enum {
    PI_INDEX = 0,
    PO_INDEX,
    MC_INDEX,
    LAST_INDEX
};

MKREGS (PI, PI_INDEX * 16);
MKREGS (PO, PO_INDEX * 16);
MKREGS (MC, MC_INDEX * 16);

enum {
    GLOB_CNT = 0x2c,
    GLOB_STA = 0x30,
    CAS      = 0x34
};

#define GET_BM(index) (((index) >> 4) & 3)

static void po_callback (void *opaque, int free);
static void pi_callback (void *opaque, int avail);
static void mc_callback (void *opaque, int avail);

static void warm_reset (AC97LinkState *s)
{
    (void) s;
}

static void cold_reset (AC97LinkState * s)
{
    (void) s;
}

static void fetch_bd (AC97LinkState *s, AC97BusMasterRegs *r)
{
    uint8_t b[8];

    cpu_physical_memory_read (r->bdbar + r->civ * 8, b, 8);
    r->bd_valid = 1;
    r->bd.addr = le32_to_cpu (*(uint32_t *) &b[0]) & ~3;
    r->bd.ctl_len = le32_to_cpu (*(uint32_t *) &b[4]);
    r->picb = r->bd.ctl_len & 0xffff;
    dolog ("bd %2d addr=%#x ctl=%#06x len=%#x(%d bytes)\n",
           r->civ, r->bd.addr, r->bd.ctl_len >> 16,
           r->bd.ctl_len & 0xffff,
           (r->bd.ctl_len & 0xffff) << 1);
}

static void update_sr (AC97LinkState *s, AC97BusMasterRegs *r, uint32_t new_sr)
{
    int event = 0;
    int level = 0;
    uint32_t new_mask = new_sr & SR_INT_MASK;
    uint32_t old_mask = r->sr & SR_INT_MASK;
    uint32_t masks[] = {GS_PIINT, GS_POINT, GS_MINT};

    if (new_mask ^ old_mask) {
        /** @todo is IRQ deasserted when only one of status bits is cleared? */
        if (!new_mask) {
            event = 1;
            level = 0;
        }
        else {
            if ((new_mask & SR_LVBCI) && (r->cr & CR_LVBIE)) {
                event = 1;
                level = 1;
            }
            if ((new_mask & SR_BCIS) && (r->cr & CR_IOCE)) {
                event = 1;
                level = 1;
            }
        }
    }

    r->sr = new_sr;

    dolog ("IOC%d LVB%d sr=%#x event=%d level=%d\n",
           r->sr & SR_BCIS, r->sr & SR_LVBCI,
           r->sr,
           event, level);

    if (!event)
        return;

    if (level) {
        s->glob_sta |= masks[r - s->bm_regs];
        dolog ("set irq level=1\n");
        qemu_set_irq(s->pci_dev->irq[0], 1);
    }
    else {
        s->glob_sta &= ~masks[r - s->bm_regs];
        dolog ("set irq level=0\n");
        qemu_set_irq(s->pci_dev->irq[0], 0);
    }
}

static void voice_set_active (AC97LinkState *s, int bm_index, int on)
{
    switch (bm_index) {
    case PI_INDEX:
        AUD_set_active_in (s->voice_pi, on);
        break;

    case PO_INDEX:
        AUD_set_active_out (s->voice_po, on);
        break;

    case MC_INDEX:
        AUD_set_active_in (s->voice_mc, on);
        break;

    default:
        AUD_log ("ac97", "invalid bm_index(%d) in voice_set_active", bm_index);
        break;
    }
}

static void reset_bm_regs (AC97LinkState *s, AC97BusMasterRegs *r)
{
    dolog ("reset_bm_regs\n");
    r->bdbar = 0;
    r->civ = 0;
    r->lvi = 0;
    /** todo do we need to do that? */
    update_sr (s, r, SR_DCH);
    r->picb = 0;
    r->piv = 0;
    r->cr = r->cr & CR_DONT_CLEAR_MASK;
    r->bd_valid = 0;

    voice_set_active (s, r - s->bm_regs, 0);
    memset (s->silence, 0, sizeof (s->silence));
}

static void mixer_store (AC97LinkState *s, uint32_t i, uint16_t v)
{
    if (i + 2 > sizeof (s->mixer_data)) {
        dolog ("mixer_store: index %d out of bounds %d\n",
               i, sizeof (s->mixer_data));
        return;
    }

    s->mixer_data[i + 0] = v & 0xff;
    s->mixer_data[i + 1] = v >> 8;
}

static uint16_t mixer_load (AC97LinkState *s, uint32_t i)
{
    uint16_t val = 0xffff;

    if (i + 2 > sizeof (s->mixer_data)) {
        dolog ("mixer_store: index %d out of bounds %d\n",
               i, sizeof (s->mixer_data));
    }
    else {
        val = s->mixer_data[i + 0] | (s->mixer_data[i + 1] << 8);
    }

    return val;
}

static void open_voice (AC97LinkState *s, int index, int freq)
{
malc's avatar
malc committed
357
    struct audsettings as;
balrog's avatar
balrog committed
358 359 360 361 362 363

    as.freq = freq;
    as.nchannels = 2;
    as.fmt = AUD_FMT_S16;
    as.endianness = 0;

364 365 366 367 368 369 370 371 372 373 374 375 376
    if (freq > 0) {
        s->invalid_freq[index] = 0;
        switch (index) {
        case PI_INDEX:
            s->voice_pi = AUD_open_in (
                &s->card,
                s->voice_pi,
                "ac97.pi",
                s,
                pi_callback,
                &as
                );
            break;
balrog's avatar
balrog committed
377

378 379 380 381 382 383 384 385 386 387
        case PO_INDEX:
            s->voice_po = AUD_open_out (
                &s->card,
                s->voice_po,
                "ac97.po",
                s,
                po_callback,
                &as
                );
            break;
balrog's avatar
balrog committed
388

389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418
        case MC_INDEX:
            s->voice_mc = AUD_open_in (
                &s->card,
                s->voice_mc,
                "ac97.mc",
                s,
                mc_callback,
                &as
                );
            break;
        }
    }
    else {
        s->invalid_freq[index] = freq;
        switch (index) {
        case PI_INDEX:
            AUD_close_in (&s->card, s->voice_pi);
            s->voice_pi = NULL;
            break;

        case PO_INDEX:
            AUD_close_out (&s->card, s->voice_po);
            s->voice_po = NULL;
            break;

        case MC_INDEX:
            AUD_close_in (&s->card, s->voice_mc);
            s->voice_mc = NULL;
            break;
        }
balrog's avatar
balrog committed
419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090
    }
}

static void reset_voices (AC97LinkState *s, uint8_t active[LAST_INDEX])
{
    uint16_t freq;

    freq = mixer_load (s, AC97_PCM_LR_ADC_Rate);
    open_voice (s, PI_INDEX, freq);
    AUD_set_active_in (s->voice_pi, active[PI_INDEX]);

    freq = mixer_load (s, AC97_PCM_Front_DAC_Rate);
    open_voice (s, PO_INDEX, freq);
    AUD_set_active_out (s->voice_po, active[PO_INDEX]);

    freq = mixer_load (s, AC97_MIC_ADC_Rate);
    open_voice (s, MC_INDEX, freq);
    AUD_set_active_in (s->voice_mc, active[MC_INDEX]);
}

#ifdef USE_MIXER
static void set_volume (AC97LinkState *s, int index,
                        audmixerctl_t mt, uint32_t val)
{
    int mute = (val >> MUTE_SHIFT) & 1;
    uint8_t rvol = VOL_MASK - (val & VOL_MASK);
    uint8_t lvol = VOL_MASK - ((val >> 8) & VOL_MASK);
    rvol = 255 * rvol / VOL_MASK;
    lvol = 255 * lvol / VOL_MASK;

#ifdef SOFT_VOLUME
    if (index == AC97_Master_Volume_Mute) {
        AUD_set_volume_out (s->voice_po, mute, lvol, rvol);
    }
    else {
        AUD_set_volume (mt, &mute, &lvol, &rvol);
    }
#else
    AUD_set_volume (mt, &mute, &lvol, &rvol);
#endif

    rvol = VOL_MASK - ((VOL_MASK * rvol) / 255);
    lvol = VOL_MASK - ((VOL_MASK * lvol) / 255);
    mixer_store (s, index, val);
}

static audrecsource_t ac97_to_aud_record_source (uint8_t i)
{
    switch (i) {
    case REC_MIC:
        return AUD_REC_MIC;

    case REC_CD:
        return AUD_REC_CD;

    case REC_VIDEO:
        return AUD_REC_VIDEO;

    case REC_AUX:
        return AUD_REC_AUX;

    case REC_LINE_IN:
        return AUD_REC_LINE_IN;

    case REC_PHONE:
        return AUD_REC_PHONE;

    default:
        dolog ("Unknown record source %d, using MIC\n", i);
        return AUD_REC_MIC;
    }
}

static uint8_t aud_to_ac97_record_source (audrecsource_t rs)
{
    switch (rs) {
    case AUD_REC_MIC:
        return REC_MIC;

    case AUD_REC_CD:
        return REC_CD;

    case AUD_REC_VIDEO:
        return REC_VIDEO;

    case AUD_REC_AUX:
        return REC_AUX;

    case AUD_REC_LINE_IN:
        return REC_LINE_IN;

    case AUD_REC_PHONE:
        return REC_PHONE;

    default:
        dolog ("Unknown audio recording source %d using MIC\n", rs);
        return REC_MIC;
    }
}

static void record_select (AC97LinkState *s, uint32_t val)
{
    uint8_t rs = val & REC_MASK;
    uint8_t ls = (val >> 8) & REC_MASK;
    audrecsource_t ars = ac97_to_aud_record_source (rs);
    audrecsource_t als = ac97_to_aud_record_source (ls);
    AUD_set_record_source (&als, &ars);
    rs = aud_to_ac97_record_source (ars);
    ls = aud_to_ac97_record_source (als);
    mixer_store (s, AC97_Record_Select, rs | (ls << 8));
}
#endif

static void mixer_reset (AC97LinkState *s)
{
    uint8_t active[LAST_INDEX];

    dolog ("mixer_reset\n");
    memset (s->mixer_data, 0, sizeof (s->mixer_data));
    memset (active, 0, sizeof (active));
    mixer_store (s, AC97_Reset                   , 0x0000); /* 6940 */
    mixer_store (s, AC97_Master_Volume_Mono_Mute , 0x8000);
    mixer_store (s, AC97_PC_BEEP_Volume_Mute     , 0x0000);

    mixer_store (s, AC97_Phone_Volume_Mute       , 0x8008);
    mixer_store (s, AC97_Mic_Volume_Mute         , 0x8008);
    mixer_store (s, AC97_CD_Volume_Mute          , 0x8808);
    mixer_store (s, AC97_Aux_Volume_Mute         , 0x8808);
    mixer_store (s, AC97_Record_Gain_Mic_Mute    , 0x8000);
    mixer_store (s, AC97_General_Purpose         , 0x0000);
    mixer_store (s, AC97_3D_Control              , 0x0000);
    mixer_store (s, AC97_Powerdown_Ctrl_Stat     , 0x000f);

    /*
     * Sigmatel 9700 (STAC9700)
     */
    mixer_store (s, AC97_Vendor_ID1              , 0x8384);
    mixer_store (s, AC97_Vendor_ID2              , 0x7600); /* 7608 */

    mixer_store (s, AC97_Extended_Audio_ID       , 0x0809);
    mixer_store (s, AC97_Extended_Audio_Ctrl_Stat, 0x0009);
    mixer_store (s, AC97_PCM_Front_DAC_Rate      , 0xbb80);
    mixer_store (s, AC97_PCM_Surround_DAC_Rate   , 0xbb80);
    mixer_store (s, AC97_PCM_LFE_DAC_Rate        , 0xbb80);
    mixer_store (s, AC97_PCM_LR_ADC_Rate         , 0xbb80);
    mixer_store (s, AC97_MIC_ADC_Rate            , 0xbb80);

#ifdef USE_MIXER
    record_select (s, 0);
    set_volume (s, AC97_Master_Volume_Mute, AUD_MIXER_VOLUME  , 0x8000);
    set_volume (s, AC97_PCM_Out_Volume_Mute, AUD_MIXER_PCM    , 0x8808);
    set_volume (s, AC97_Line_In_Volume_Mute, AUD_MIXER_LINE_IN, 0x8808);
#endif
    reset_voices (s, active);
}

/**
 * Native audio mixer
 * I/O Reads
 */
static uint32_t nam_readb (void *opaque, uint32_t addr)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    dolog ("U nam readb %#x\n", addr);
    s->cas = 0;
    return ~0U;
}

static uint32_t nam_readw (void *opaque, uint32_t addr)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    uint32_t val = ~0U;
    uint32_t index = addr - s->base[0];
    s->cas = 0;
    val = mixer_load (s, index);
    return val;
}

static uint32_t nam_readl (void *opaque, uint32_t addr)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    dolog ("U nam readl %#x\n", addr);
    s->cas = 0;
    return ~0U;
}

/**
 * Native audio mixer
 * I/O Writes
 */
static void nam_writeb (void *opaque, uint32_t addr, uint32_t val)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    dolog ("U nam writeb %#x <- %#x\n", addr, val);
    s->cas = 0;
}

static void nam_writew (void *opaque, uint32_t addr, uint32_t val)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    uint32_t index = addr - s->base[0];
    s->cas = 0;
    switch (index) {
    case AC97_Reset:
        mixer_reset (s);
        break;
    case AC97_Powerdown_Ctrl_Stat:
        val &= ~0xf;
        val |= mixer_load (s, index) & 0xf;
        mixer_store (s, index, val);
        break;
#ifdef USE_MIXER
    case AC97_Master_Volume_Mute:
        set_volume (s, index, AUD_MIXER_VOLUME, val);
        break;
    case AC97_PCM_Out_Volume_Mute:
        set_volume (s, index, AUD_MIXER_PCM, val);
        break;
    case AC97_Line_In_Volume_Mute:
        set_volume (s, index, AUD_MIXER_LINE_IN, val);
        break;
    case AC97_Record_Select:
        record_select (s, val);
        break;
#endif
    case AC97_Vendor_ID1:
    case AC97_Vendor_ID2:
        dolog ("Attempt to write vendor ID to %#x\n", val);
        break;
    case AC97_Extended_Audio_ID:
        dolog ("Attempt to write extended audio ID to %#x\n", val);
        break;
    case AC97_Extended_Audio_Ctrl_Stat:
        if (!(val & EACS_VRA)) {
            mixer_store (s, AC97_PCM_Front_DAC_Rate, 0xbb80);
            mixer_store (s, AC97_PCM_LR_ADC_Rate,    0xbb80);
            open_voice (s, PI_INDEX, 48000);
            open_voice (s, PO_INDEX, 48000);
        }
        if (!(val & EACS_VRM)) {
            mixer_store (s, AC97_MIC_ADC_Rate, 0xbb80);
            open_voice (s, MC_INDEX, 48000);
        }
        dolog ("Setting extended audio control to %#x\n", val);
        mixer_store (s, AC97_Extended_Audio_Ctrl_Stat, val);
        break;
    case AC97_PCM_Front_DAC_Rate:
        if (mixer_load (s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRA) {
            mixer_store (s, index, val);
            dolog ("Set front DAC rate to %d\n", val);
            open_voice (s, PO_INDEX, val);
        }
        else {
            dolog ("Attempt to set front DAC rate to %d, "
                   "but VRA is not set\n",
                   val);
        }
        break;
    case AC97_MIC_ADC_Rate:
        if (mixer_load (s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRM) {
            mixer_store (s, index, val);
            dolog ("Set MIC ADC rate to %d\n", val);
            open_voice (s, MC_INDEX, val);
        }
        else {
            dolog ("Attempt to set MIC ADC rate to %d, "
                   "but VRM is not set\n",
                   val);
        }
        break;
    case AC97_PCM_LR_ADC_Rate:
        if (mixer_load (s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRA) {
            mixer_store (s, index, val);
            dolog ("Set front LR ADC rate to %d\n", val);
            open_voice (s, PI_INDEX, val);
        }
        else {
            dolog ("Attempt to set LR ADC rate to %d, but VRA is not set\n",
                    val);
        }
        break;
    default:
        dolog ("U nam writew %#x <- %#x\n", addr, val);
        mixer_store (s, index, val);
        break;
    }
}

static void nam_writel (void *opaque, uint32_t addr, uint32_t val)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    dolog ("U nam writel %#x <- %#x\n", addr, val);
    s->cas = 0;
}

/**
 * Native audio bus master
 * I/O Reads
 */
static uint32_t nabm_readb (void *opaque, uint32_t addr)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    AC97BusMasterRegs *r = NULL;
    uint32_t index = addr - s->base[1];
    uint32_t val = ~0U;

    switch (index) {
    case CAS:
        dolog ("CAS %d\n", s->cas);
        val = s->cas;
        s->cas = 1;
        break;
    case PI_CIV:
    case PO_CIV:
    case MC_CIV:
        r = &s->bm_regs[GET_BM (index)];
        val = r->civ;
        dolog ("CIV[%d] -> %#x\n", GET_BM (index), val);
        break;
    case PI_LVI:
    case PO_LVI:
    case MC_LVI:
        r = &s->bm_regs[GET_BM (index)];
        val = r->lvi;
        dolog ("LVI[%d] -> %#x\n", GET_BM (index), val);
        break;
    case PI_PIV:
    case PO_PIV:
    case MC_PIV:
        r = &s->bm_regs[GET_BM (index)];
        val = r->piv;
        dolog ("PIV[%d] -> %#x\n", GET_BM (index), val);
        break;
    case PI_CR:
    case PO_CR:
    case MC_CR:
        r = &s->bm_regs[GET_BM (index)];
        val = r->cr;
        dolog ("CR[%d] -> %#x\n", GET_BM (index), val);
        break;
    case PI_SR:
    case PO_SR:
    case MC_SR:
        r = &s->bm_regs[GET_BM (index)];
        val = r->sr & 0xff;
        dolog ("SRb[%d] -> %#x\n", GET_BM (index), val);
        break;
    default:
        dolog ("U nabm readb %#x -> %#x\n", addr, val);
        break;
    }
    return val;
}

static uint32_t nabm_readw (void *opaque, uint32_t addr)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    AC97BusMasterRegs *r = NULL;
    uint32_t index = addr - s->base[1];
    uint32_t val = ~0U;

    switch (index) {
    case PI_SR:
    case PO_SR:
    case MC_SR:
        r = &s->bm_regs[GET_BM (index)];
        val = r->sr;
        dolog ("SR[%d] -> %#x\n", GET_BM (index), val);
        break;
    case PI_PICB:
    case PO_PICB:
    case MC_PICB:
        r = &s->bm_regs[GET_BM (index)];
        val = r->picb;
        dolog ("PICB[%d] -> %#x\n", GET_BM (index), val);
        break;
    default:
        dolog ("U nabm readw %#x -> %#x\n", addr, val);
        break;
    }
    return val;
}

static uint32_t nabm_readl (void *opaque, uint32_t addr)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    AC97BusMasterRegs *r = NULL;
    uint32_t index = addr - s->base[1];
    uint32_t val = ~0U;

    switch (index) {
    case PI_BDBAR:
    case PO_BDBAR:
    case MC_BDBAR:
        r = &s->bm_regs[GET_BM (index)];
        val = r->bdbar;
        dolog ("BMADDR[%d] -> %#x\n", GET_BM (index), val);
        break;
    case PI_CIV:
    case PO_CIV:
    case MC_CIV:
        r = &s->bm_regs[GET_BM (index)];
        val = r->civ | (r->lvi << 8) | (r->sr << 16);
        dolog ("CIV LVI SR[%d] -> %#x, %#x, %#x\n", GET_BM (index),
               r->civ, r->lvi, r->sr);
        break;
    case PI_PICB:
    case PO_PICB:
    case MC_PICB:
        r = &s->bm_regs[GET_BM (index)];
        val = r->picb | (r->piv << 16) | (r->cr << 24);
        dolog ("PICB PIV CR[%d] -> %#x %#x %#x %#x\n", GET_BM (index),
               val, r->picb, r->piv, r->cr);
        break;
    case GLOB_CNT:
        val = s->glob_cnt;
        dolog ("glob_cnt -> %#x\n", val);
        break;
    case GLOB_STA:
        val = s->glob_sta | GS_S0CR;
        dolog ("glob_sta -> %#x\n", val);
        break;
    default:
        dolog ("U nabm readl %#x -> %#x\n", addr, val);
        break;
    }
    return val;
}

/**
 * Native audio bus master
 * I/O Writes
 */
static void nabm_writeb (void *opaque, uint32_t addr, uint32_t val)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    AC97BusMasterRegs *r = NULL;
    uint32_t index = addr - s->base[1];
    switch (index) {
    case PI_LVI:
    case PO_LVI:
    case MC_LVI:
        r = &s->bm_regs[GET_BM (index)];
        if ((r->cr & CR_RPBM) && (r->sr & SR_DCH)) {
            r->sr &= ~(SR_DCH | SR_CELV);
            r->civ = r->piv;
            r->piv = (r->piv + 1) % 32;
            fetch_bd (s, r);
        }
        r->lvi = val % 32;
        dolog ("LVI[%d] <- %#x\n", GET_BM (index), val);
        break;
    case PI_CR:
    case PO_CR:
    case MC_CR:
        r = &s->bm_regs[GET_BM (index)];
        if (val & CR_RR) {
            reset_bm_regs (s, r);
        }
        else {
            r->cr = val & CR_VALID_MASK;
            if (!(r->cr & CR_RPBM)) {
                voice_set_active (s, r - s->bm_regs, 0);
                r->sr |= SR_DCH;
            }
            else {
                r->civ = r->piv;
                r->piv = (r->piv + 1) % 32;
                fetch_bd (s, r);
                r->sr &= ~SR_DCH;
                voice_set_active (s, r - s->bm_regs, 1);
            }
        }
        dolog ("CR[%d] <- %#x (cr %#x)\n", GET_BM (index), val, r->cr);
        break;
    case PI_SR:
    case PO_SR:
    case MC_SR:
        r = &s->bm_regs[GET_BM (index)];
        r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
        update_sr (s, r, r->sr & ~(val & SR_WCLEAR_MASK));
        dolog ("SR[%d] <- %#x (sr %#x)\n", GET_BM (index), val, r->sr);
        break;
    default:
        dolog ("U nabm writeb %#x <- %#x\n", addr, val);
        break;
    }
}

static void nabm_writew (void *opaque, uint32_t addr, uint32_t val)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    AC97BusMasterRegs *r = NULL;
    uint32_t index = addr - s->base[1];
    switch (index) {
    case PI_SR:
    case PO_SR:
    case MC_SR:
        r = &s->bm_regs[GET_BM (index)];
        r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
        update_sr (s, r, r->sr & ~(val & SR_WCLEAR_MASK));
        dolog ("SR[%d] <- %#x (sr %#x)\n", GET_BM (index), val, r->sr);
        break;
    default:
        dolog ("U nabm writew %#x <- %#x\n", addr, val);
        break;
    }
}

static void nabm_writel (void *opaque, uint32_t addr, uint32_t val)
{
    PCIAC97LinkState *d = opaque;
    AC97LinkState *s = &d->ac97;
    AC97BusMasterRegs *r = NULL;
    uint32_t index = addr - s->base[1];
    switch (index) {
    case PI_BDBAR:
    case PO_BDBAR:
    case MC_BDBAR:
        r = &s->bm_regs[GET_BM (index)];
        r->bdbar = val & ~3;
        dolog ("BDBAR[%d] <- %#x (bdbar %#x)\n",
               GET_BM (index), val, r->bdbar);
        break;
    case GLOB_CNT:
        if (val & GC_WR)
            warm_reset (s);
        if (val & GC_CR)
            cold_reset (s);
        if (!(val & (GC_WR | GC_CR)))
            s->glob_cnt = val & GC_VALID_MASK;
        dolog ("glob_cnt <- %#x (glob_cnt %#x)\n", val, s->glob_cnt);
        break;
    case GLOB_STA:
        s->glob_sta &= ~(val & GS_WCLEAR_MASK);
        s->glob_sta |= (val & ~(GS_WCLEAR_MASK | GS_RO_MASK)) & GS_VALID_MASK;
        dolog ("glob_sta <- %#x (glob_sta %#x)\n", val, s->glob_sta);
        break;
    default:
        dolog ("U nabm writel %#x <- %#x\n", addr, val);
        break;
    }
}

static int write_audio (AC97LinkState *s, AC97BusMasterRegs *r,
                        int max, int *stop)
{
    uint8_t tmpbuf[4096];
    uint32_t addr = r->bd.addr;
    uint32_t temp = r->picb << 1;
    uint32_t written = 0;
    int to_copy = 0;
    temp = audio_MIN (temp, max);

    if (!temp) {
        *stop = 1;
        return 0;
    }

    while (temp) {
        int copied;
        to_copy = audio_MIN (temp, sizeof (tmpbuf));
        cpu_physical_memory_read (addr, tmpbuf, to_copy);
        copied = AUD_write (s->voice_po, tmpbuf, to_copy);
        dolog ("write_audio max=%x to_copy=%x copied=%x\n",
               max, to_copy, copied);
        if (!copied) {
            *stop = 1;
            break;
        }
        temp -= copied;
        addr += copied;
        written += copied;
    }

    if (!temp) {
        if (to_copy < 4) {
            dolog ("whoops\n");
            s->last_samp = 0;
        }
        else {
            s->last_samp = *(uint32_t *) &tmpbuf[to_copy - 4];
        }
    }

    r->bd.addr = addr;
    return written;
}

static void write_bup (AC97LinkState *s, int elapsed)
{
    int written = 0;

    dolog ("write_bup\n");
    if (!(s->bup_flag & BUP_SET)) {
        if (s->bup_flag & BUP_LAST) {
            int i;
            uint8_t *p = s->silence;
            for (i = 0; i < sizeof (s->silence) / 4; i++, p += 4) {
                *(uint32_t *) p = s->last_samp;
            }
        }
        else {
            memset (s->silence, 0, sizeof (s->silence));
        }
        s->bup_flag |= BUP_SET;
    }

    while (elapsed) {
        int temp = audio_MIN (elapsed, sizeof (s->silence));
        while (temp) {
            int copied = AUD_write (s->voice_po, s->silence, temp);
            if (!copied)
                return;
            temp -= copied;
            elapsed -= copied;
            written += copied;
        }
    }
}

static int read_audio (AC97LinkState *s, AC97BusMasterRegs *r,
                       int max, int *stop)
{
    uint8_t tmpbuf[4096];
    uint32_t addr = r->bd.addr;
    uint32_t temp = r->picb << 1;
    uint32_t nread = 0;
    int to_copy = 0;
    SWVoiceIn *voice = (r - s->bm_regs) == MC_INDEX ? s->voice_mc : s->voice_pi;

    temp = audio_MIN (temp, max);

    if (!temp) {
        *stop = 1;
        return 0;
    }

    while (temp) {
        int acquired;
        to_copy = audio_MIN (temp, sizeof (tmpbuf));
        acquired = AUD_read (voice, tmpbuf, to_copy);
        if (!acquired) {
            *stop = 1;
            break;
        }
        cpu_physical_memory_write (addr, tmpbuf, acquired);
        temp -= acquired;
        addr += acquired;
        nread += acquired;
    }

    r->bd.addr = addr;
    return nread;
}

static void transfer_audio (AC97LinkState *s, int index, int elapsed)
{
    AC97BusMasterRegs *r = &s->bm_regs[index];
    int written = 0, stop = 0;

1091 1092 1093 1094 1095 1096
    if (s->invalid_freq[index]) {
        AUD_log ("ac97", "attempt to use voice %d with invalid frequency %d\n",
                 index, s->invalid_freq[index]);
        return;
    }

balrog's avatar
balrog committed
1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192
    if (r->sr & SR_DCH) {
        if (r->cr & CR_RPBM) {
            switch (index) {
            case PO_INDEX:
                write_bup (s, elapsed);
                break;
            }
        }
        return;
    }

    while ((elapsed >> 1) && !stop) {
        int temp;

        if (!r->bd_valid) {
            dolog ("invalid bd\n");
            fetch_bd (s, r);
        }

        if (!r->picb) {
            dolog ("fresh bd %d is empty %#x %#x\n",
                   r->civ, r->bd.addr, r->bd.ctl_len);
            if (r->civ == r->lvi) {
                r->sr |= SR_DCH; /* CELV? */
                s->bup_flag = 0;
                break;
            }
            r->sr &= ~SR_CELV;
            r->civ = r->piv;
            r->piv = (r->piv + 1) % 32;
            fetch_bd (s, r);
            return;
        }

        switch (index) {
        case PO_INDEX:
            temp = write_audio (s, r, elapsed, &stop);
            written += temp;
            elapsed -= temp;
            r->picb -= (temp >> 1);
            break;

        case PI_INDEX:
        case MC_INDEX:
            temp = read_audio (s, r, elapsed, &stop);
            elapsed -= temp;
            r->picb -= (temp >> 1);
            break;
        }

        if (!r->picb) {
            uint32_t new_sr = r->sr & ~SR_CELV;

            if (r->bd.ctl_len & BD_IOC) {
                new_sr |= SR_BCIS;
            }

            if (r->civ == r->lvi) {
                dolog ("Underrun civ (%d) == lvi (%d)\n", r->civ, r->lvi);

                new_sr |= SR_LVBCI | SR_DCH | SR_CELV;
                stop = 1;
                s->bup_flag = (r->bd.ctl_len & BD_BUP) ? BUP_LAST : 0;
            }
            else {
                r->civ = r->piv;
                r->piv = (r->piv + 1) % 32;
                fetch_bd (s, r);
            }

            update_sr (s, r, new_sr);
        }
    }
}

static void pi_callback (void *opaque, int avail)
{
    transfer_audio (opaque, PI_INDEX, avail);
}

static void mc_callback (void *opaque, int avail)
{
    transfer_audio (opaque, MC_INDEX, avail);
}

static void po_callback (void *opaque, int free)
{
    transfer_audio (opaque, PO_INDEX, free);
}

static void ac97_save (QEMUFile *f, void *opaque)
{
    size_t i;
    uint8_t active[LAST_INDEX];
    AC97LinkState *s = opaque;

malc's avatar
malc committed
1193 1194
    pci_device_save (s->pci_dev, f);

balrog's avatar
balrog committed
1195 1196 1197 1198
    qemu_put_be32s (f, &s->glob_cnt);
    qemu_put_be32s (f, &s->glob_sta);
    qemu_put_be32s (f, &s->cas);

1199
    for (i = 0; i < ARRAY_SIZE (s->bm_regs); ++i) {
balrog's avatar
balrog committed
1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221
        AC97BusMasterRegs *r = &s->bm_regs[i];
        qemu_put_be32s (f, &r->bdbar);
        qemu_put_8s (f, &r->civ);
        qemu_put_8s (f, &r->lvi);
        qemu_put_be16s (f, &r->sr);
        qemu_put_be16s (f, &r->picb);
        qemu_put_8s (f, &r->piv);
        qemu_put_8s (f, &r->cr);
        qemu_put_be32s (f, &r->bd_valid);
        qemu_put_be32s (f, &r->bd.addr);
        qemu_put_be32s (f, &r->bd.ctl_len);
    }
    qemu_put_buffer (f, s->mixer_data, sizeof (s->mixer_data));

    active[PI_INDEX] = AUD_is_active_in (s->voice_pi) ? 1 : 0;
    active[PO_INDEX] = AUD_is_active_out (s->voice_po) ? 1 : 0;
    active[MC_INDEX] = AUD_is_active_in (s->voice_mc) ? 1 : 0;
    qemu_put_buffer (f, active, sizeof (active));
}

static int ac97_load (QEMUFile *f, void *opaque, int version_id)
{
malc's avatar
malc committed
1222
    int ret;
balrog's avatar
balrog committed
1223 1224 1225 1226
    size_t i;
    uint8_t active[LAST_INDEX];
    AC97LinkState *s = opaque;

malc's avatar
malc committed
1227
    if (version_id != 2)
balrog's avatar
balrog committed
1228 1229
        return -EINVAL;

malc's avatar
malc committed
1230 1231 1232 1233
    ret = pci_device_load (s->pci_dev, f);
    if (ret)
        return ret;

balrog's avatar
balrog committed
1234 1235 1236 1237
    qemu_get_be32s (f, &s->glob_cnt);
    qemu_get_be32s (f, &s->glob_sta);
    qemu_get_be32s (f, &s->cas);

1238
    for (i = 0; i < ARRAY_SIZE (s->bm_regs); ++i) {
balrog's avatar
balrog committed
1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379
        AC97BusMasterRegs *r = &s->bm_regs[i];
        qemu_get_be32s (f, &r->bdbar);
        qemu_get_8s (f, &r->civ);
        qemu_get_8s (f, &r->lvi);
        qemu_get_be16s (f, &r->sr);
        qemu_get_be16s (f, &r->picb);
        qemu_get_8s (f, &r->piv);
        qemu_get_8s (f, &r->cr);
        qemu_get_be32s (f, &r->bd_valid);
        qemu_get_be32s (f, &r->bd.addr);
        qemu_get_be32s (f, &r->bd.ctl_len);
    }
    qemu_get_buffer (f, s->mixer_data, sizeof (s->mixer_data));
    qemu_get_buffer (f, active, sizeof (active));

#ifdef USE_MIXER
    record_select (s, mixer_load (s, AC97_Record_Select));
#define V_(a, b) set_volume (s, a, b, mixer_load (s, a))
    V_ (AC97_Master_Volume_Mute, AUD_MIXER_VOLUME);
    V_ (AC97_PCM_Out_Volume_Mute, AUD_MIXER_PCM);
    V_ (AC97_Line_In_Volume_Mute, AUD_MIXER_LINE_IN);
#undef V_
#endif
    reset_voices (s, active);

    s->bup_flag = 0;
    s->last_samp = 0;
    return 0;
}

static void ac97_map (PCIDevice *pci_dev, int region_num,
                      uint32_t addr, uint32_t size, int type)
{
    PCIAC97LinkState *d = (PCIAC97LinkState *) pci_dev;
    AC97LinkState *s = &d->ac97;

    if (!region_num) {
        s->base[0] = addr;
        register_ioport_read (addr, 256 * 1, 1, nam_readb, d);
        register_ioport_read (addr, 256 * 2, 2, nam_readw, d);
        register_ioport_read (addr, 256 * 4, 4, nam_readl, d);
        register_ioport_write (addr, 256 * 1, 1, nam_writeb, d);
        register_ioport_write (addr, 256 * 2, 2, nam_writew, d);
        register_ioport_write (addr, 256 * 4, 4, nam_writel, d);
    }
    else {
        s->base[1] = addr;
        register_ioport_read (addr, 64 * 1, 1, nabm_readb, d);
        register_ioport_read (addr, 64 * 2, 2, nabm_readw, d);
        register_ioport_read (addr, 64 * 4, 4, nabm_readl, d);
        register_ioport_write (addr, 64 * 1, 1, nabm_writeb, d);
        register_ioport_write (addr, 64 * 2, 2, nabm_writew, d);
        register_ioport_write (addr, 64 * 4, 4, nabm_writel, d);
    }
}

static void ac97_on_reset (void *opaque)
{
    AC97LinkState *s = opaque;

    reset_bm_regs (s, &s->bm_regs[0]);
    reset_bm_regs (s, &s->bm_regs[1]);
    reset_bm_regs (s, &s->bm_regs[2]);

    /*
     * Reset the mixer too. The Windows XP driver seems to rely on
     * this. At least it wants to read the vendor id before it resets
     * the codec manually.
     */
    mixer_reset (s);
}

int ac97_init (PCIBus *bus, AudioState *audio)
{
    PCIAC97LinkState *d;
    AC97LinkState *s;
    uint8_t *c;

    if (!bus) {
        AUD_log ("ac97", "No PCI bus\n");
        return -1;
    }

    if (!audio) {
        AUD_log ("ac97", "No audio state\n");
        return -1;
    }

    d = (PCIAC97LinkState *) pci_register_device (bus, "AC97",
                                                  sizeof (PCIAC97LinkState),
                                                  -1, NULL, NULL);

    if (!d) {
        AUD_log ("ac97", "Failed to register PCI device\n");
        return -1;
    }

    s = &d->ac97;
    s->pci_dev = &d->dev;
    c = d->dev.config;
    c[0x00] = 0x86;      /* vid vendor id intel ro */
    c[0x01] = 0x80;      /* intel */

    c[0x02] = 0x15;      /* did device id 82801 ro */
    c[0x03] = 0x24;      /* 82801aa */

    c[0x04] = 0x00;      /* pcicmd pci command rw, ro */
    c[0x05] = 0x00;

    c[0x06] = 0x80;      /* pcists pci status rwc, ro */
    c[0x07] = 0x02;

    c[0x08] = 0x01;      /* rid revision ro */
    c[0x09] = 0x00;      /* pi programming interface ro */
    c[0x0a] = 0x01;      /* scc sub class code ro */
    c[0x0b] = 0x04;      /* bcc base class code ro */
    c[0x0e] = 0x00;      /* headtyp header type ro */

    c[0x10] = 0x01;      /* nabmar native audio mixer base
                            address rw */
    c[0x11] = 0x00;
    c[0x12] = 0x00;
    c[0x13] = 0x00;

    c[0x14] = 0x01;      /* nabmbar native audio bus mastering
                            base address rw */
    c[0x15] = 0x00;
    c[0x16] = 0x00;
    c[0x17] = 0x00;

    c[0x2c] = 0x86;      /* svid subsystem vendor id rwo */
    c[0x2d] = 0x80;

    c[0x2e] = 0x00;      /* sid subsystem id rwo */
    c[0x2f] = 0x00;

    c[0x3c] = 0x00;      /* intr_ln interrupt line rw */
    c[0x3d] = 0x01;      /* intr_pn interrupt pin ro */

    pci_register_io_region (&d->dev, 0, 256 * 4, PCI_ADDRESS_SPACE_IO, ac97_map);
    pci_register_io_region (&d->dev, 1, 64 * 4, PCI_ADDRESS_SPACE_IO, ac97_map);
malc's avatar
malc committed
1380
    register_savevm ("ac97", 0, 2, ac97_save, ac97_load, s);
balrog's avatar
balrog committed
1381 1382 1383 1384 1385
    qemu_register_reset (ac97_on_reset, s);
    AUD_register_card (audio, "ac97", &s->card);
    ac97_on_reset (s);
    return 0;
}