hw/ac97.c

   1 /*
   2  * Copyright (C) 2006 InnoTek Systemberatung GmbH
   3  *
   4  * This file is part of VirtualBox Open Source Edition (OSE), as
   5  * available from http://www.virtualbox.org. This file is free software;
   6  * you can redistribute it and/or modify it under the terms of the GNU
   7  * General Public License as published by the Free Software Foundation,
   8  * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
   9  * distribution. VirtualBox OSE is distributed in the hope that it will
  10  * be useful, but WITHOUT ANY WARRANTY of any kind.
  11  *
  12  * If you received this file as part of a commercial VirtualBox
  13  * distribution, then only the terms of your commercial VirtualBox
  14  * license agreement apply instead of the previous paragraph.
  15  */
  16
  17 #include "hw.h"
  18 #include "audiodev.h"
  19 #include "audio/audio.h"
  20 #include "pci.h"
  21
  22 enum {
  23     AC97_Reset                     = 0x00,
  24     AC97_Master_Volume_Mute        = 0x02,
  25     AC97_Headphone_Volume_Mute     = 0x04,
  26     AC97_Master_Volume_Mono_Mute   = 0x06,
  27     AC97_Master_Tone_RL            = 0x08,
  28     AC97_PC_BEEP_Volume_Mute       = 0x0A,
  29     AC97_Phone_Volume_Mute         = 0x0C,
  30     AC97_Mic_Volume_Mute           = 0x0E,
  31     AC97_Line_In_Volume_Mute       = 0x10,
  32     AC97_CD_Volume_Mute            = 0x12,
  33     AC97_Video_Volume_Mute         = 0x14,
  34     AC97_Aux_Volume_Mute           = 0x16,
  35     AC97_PCM_Out_Volume_Mute       = 0x18,
  36     AC97_Record_Select             = 0x1A,
  37     AC97_Record_Gain_Mute          = 0x1C,
  38     AC97_Record_Gain_Mic_Mute      = 0x1E,
  39     AC97_General_Purpose           = 0x20,
  40     AC97_3D_Control                = 0x22,
  41     AC97_AC_97_RESERVED            = 0x24,
  42     AC97_Powerdown_Ctrl_Stat       = 0x26,
  43     AC97_Extended_Audio_ID         = 0x28,
  44     AC97_Extended_Audio_Ctrl_Stat  = 0x2A,
  45     AC97_PCM_Front_DAC_Rate        = 0x2C,
  46     AC97_PCM_Surround_DAC_Rate     = 0x2E,
  47     AC97_PCM_LFE_DAC_Rate          = 0x30,
  48     AC97_PCM_LR_ADC_Rate           = 0x32,
  49     AC97_MIC_ADC_Rate              = 0x34,
  50     AC97_6Ch_Vol_C_LFE_Mute        = 0x36,
  51     AC97_6Ch_Vol_L_R_Surround_Mute = 0x38,
  52     AC97_Vendor_Reserved           = 0x58,
  53     AC97_Vendor_ID1                = 0x7c,
  54     AC97_Vendor_ID2                = 0x7e
  55 };
  56
  57 #define SOFT_VOLUME
  58 #define SR_FIFOE 16             /* rwc */
  59 #define SR_BCIS  8              /* rwc */
  60 #define SR_LVBCI 4              /* rwc */
  61 #define SR_CELV  2              /* ro */
  62 #define SR_DCH   1              /* ro */
  63 #define SR_VALID_MASK ((1 << 5) - 1)
  64 #define SR_WCLEAR_MASK (SR_FIFOE | SR_BCIS | SR_LVBCI)
  65 #define SR_RO_MASK (SR_DCH | SR_CELV)
  66 #define SR_INT_MASK (SR_FIFOE | SR_BCIS | SR_LVBCI)
  67
  68 #define CR_IOCE  16             /* rw */
  69 #define CR_FEIE  8              /* rw */
  70 #define CR_LVBIE 4              /* rw */
  71 #define CR_RR    2              /* rw */
  72 #define CR_RPBM  1              /* rw */
  73 #define CR_VALID_MASK ((1 << 5) - 1)
  74 #define CR_DONT_CLEAR_MASK (CR_IOCE | CR_FEIE | CR_LVBIE)
  75
  76 #define GC_WR    4              /* rw */
  77 #define GC_CR    2              /* rw */
  78 #define GC_VALID_MASK ((1 << 6) - 1)
  79
  80 #define GS_MD3   (1<<17)        /* rw */
  81 #define GS_AD3   (1<<16)        /* rw */
  82 #define GS_RCS   (1<<15)        /* rwc */
  83 #define GS_B3S12 (1<<14)        /* ro */
  84 #define GS_B2S12 (1<<13)        /* ro */
  85 #define GS_B1S12 (1<<12)        /* ro */
  86 #define GS_S1R1  (1<<11)        /* rwc */
  87 #define GS_S0R1  (1<<10)        /* rwc */
  88 #define GS_S1CR  (1<<9)         /* ro */
  89 #define GS_S0CR  (1<<8)         /* ro */
  90 #define GS_MINT  (1<<7)         /* ro */
  91 #define GS_POINT (1<<6)         /* ro */
  92 #define GS_PIINT (1<<5)         /* ro */
  93 #define GS_RSRVD ((1<<4)|(1<<3))
  94 #define GS_MOINT (1<<2)         /* ro */
  95 #define GS_MIINT (1<<1)         /* ro */
  96 #define GS_GSCI  1              /* rwc */
  97 #define GS_RO_MASK (GS_B3S12|                   \
  98                     GS_B2S12|                   \
  99                     GS_B1S12|                   \
 100                     GS_S1CR|                    \
 101                     GS_S0CR|                    \
 102                     GS_MINT|                    \
 103                     GS_POINT|                   \
 104                     GS_PIINT|                   \
 105                     GS_RSRVD|                   \
 106                     GS_MOINT|                   \
 107                     GS_MIINT)
 108 #define GS_VALID_MASK ((1 << 18) - 1)
 109 #define GS_WCLEAR_MASK (GS_RCS|GS_S1R1|GS_S0R1|GS_GSCI)
 110
 111 #define BD_IOC (1<<31)
 112 #define BD_BUP (1<<30)
 113
 114 #define EACS_VRA 1
 115 #define EACS_VRM 8
 116
 117 #define VOL_MASK 0x1f
 118 #define MUTE_SHIFT 15
 119
 120 #define REC_MASK 7
 121 enum {
 122     REC_MIC = 0,
 123     REC_CD,
 124     REC_VIDEO,
 125     REC_AUX,
 126     REC_LINE_IN,
 127     REC_STEREO_MIX,
 128     REC_MONO_MIX,
 129     REC_PHONE
 130 };
 131
 132 typedef struct BD {
 133     uint32_t addr;
 134     uint32_t ctl_len;
 135 } BD;
 136
 137 typedef struct AC97BusMasterRegs {
 138     uint32_t bdbar;             /* rw 0 */
 139     uint8_t civ;                /* ro 0 */
 140     uint8_t lvi;                /* rw 0 */
 141     uint16_t sr;                /* rw 1 */
 142     uint16_t picb;              /* ro 0 */
 143     uint8_t piv;                /* ro 0 */
 144     uint8_t cr;                 /* rw 0 */
 145     unsigned int bd_valid;
 146     BD bd;
 147 } AC97BusMasterRegs;
 148
 149 typedef struct AC97LinkState {
 150     PCIDevice *pci_dev;
 151     QEMUSoundCard card;
 152     uint32_t glob_cnt;
 153     uint32_t glob_sta;
 154     uint32_t cas;
 155     uint32_t last_samp;
 156     AC97BusMasterRegs bm_regs[3];
 157     uint8_t mixer_data[256];
 158     SWVoiceIn *voice_pi;
 159     SWVoiceOut *voice_po;
 160     SWVoiceIn *voice_mc;
 161     int invalid_freq[3];
 162     uint8_t silence[128];
 163     uint32_t base[2];
 164     int bup_flag;
 165 } AC97LinkState;
 166
 167 enum {
 168     BUP_SET = 1,
 169     BUP_LAST = 2
 170 };
 171
 172 #ifdef DEBUG_AC97
 173 #define dolog(...) AUD_log ("ac97", __VA_ARGS__)
 174 #else
 175 #define dolog(...)
 176 #endif
 177
 178 typedef struct PCIAC97LinkState {
 179     PCIDevice dev;
 180     AC97LinkState ac97;
 181 } PCIAC97LinkState;
 182
 183 #define MKREGS(prefix, start)                   \
 184 enum {                                          \
 185     prefix ## _BDBAR = start,                   \
 186     prefix ## _CIV = start + 4,                 \
 187     prefix ## _LVI = start + 5,                 \
 188     prefix ## _SR = start + 6,                  \
 189     prefix ## _PICB = start + 8,                \
 190     prefix ## _PIV = start + 10,                \
 191     prefix ## _CR = start + 11                  \
 192 }
 193
 194 enum {
 195     PI_INDEX = 0,
 196     PO_INDEX,
 197     MC_INDEX,
 198     LAST_INDEX
 199 };
 200
 201 MKREGS (PI, PI_INDEX * 16);
 202 MKREGS (PO, PO_INDEX * 16);
 203 MKREGS (MC, MC_INDEX * 16);
 204
 205 enum {
 206     GLOB_CNT = 0x2c,
 207     GLOB_STA = 0x30,
 208     CAS      = 0x34
 209 };
 210
 211 #define GET_BM(index) (((index) >> 4) & 3)
 212
 213 static void po_callback (void *opaque, int free);
 214 static void pi_callback (void *opaque, int avail);
 215 static void mc_callback (void *opaque, int avail);
 216
 217 static void warm_reset (AC97LinkState *s)
 218 {
 219     (void) s;
 220 }
 221
 222 static void cold_reset (AC97LinkState * s)
 223 {
 224     (void) s;
 225 }
 226
 227 static void fetch_bd (AC97LinkState *s, AC97BusMasterRegs *r)
 228 {
 229     uint8_t b[8];
 230
 231     cpu_physical_memory_read (r->bdbar + r->civ * 8, b, 8);
 232     r->bd_valid = 1;
 233     r->bd.addr = le32_to_cpu (*(uint32_t *) &b[0]) & ~3;
 234     r->bd.ctl_len = le32_to_cpu (*(uint32_t *) &b[4]);
 235     r->picb = r->bd.ctl_len & 0xffff;
 236     dolog ("bd %2d addr=%#x ctl=%#06x len=%#x(%d bytes)\n",
 237            r->civ, r->bd.addr, r->bd.ctl_len >> 16,
 238            r->bd.ctl_len & 0xffff,
 239            (r->bd.ctl_len & 0xffff) << 1);
 240 }
 241
 242 static void update_sr (AC97LinkState *s, AC97BusMasterRegs *r, uint32_t new_sr)
 243 {
 244     int event = 0;
 245     int level = 0;
 246     uint32_t new_mask = new_sr & SR_INT_MASK;
 247     uint32_t old_mask = r->sr & SR_INT_MASK;
 248     uint32_t masks[] = {GS_PIINT, GS_POINT, GS_MINT};
 249
 250     if (new_mask ^ old_mask) {
 251         /** @todo is IRQ deasserted when only one of status bits is cleared? */
 252         if (!new_mask) {
 253             event = 1;
 254             level = 0;
 255         }
 256         else {
 257             if ((new_mask & SR_LVBCI) && (r->cr & CR_LVBIE)) {
 258                 event = 1;
 259                 level = 1;
 260             }
 261             if ((new_mask & SR_BCIS) && (r->cr & CR_IOCE)) {
 262                 event = 1;
 263                 level = 1;
 264             }
 265         }
 266     }
 267
 268     r->sr = new_sr;
 269
 270     dolog ("IOC%d LVB%d sr=%#x event=%d level=%d\n",
 271            r->sr & SR_BCIS, r->sr & SR_LVBCI,
 272            r->sr,
 273            event, level);
 274
 275     if (!event)
 276         return;
 277
 278     if (level) {
 279         s->glob_sta |= masks[r - s->bm_regs];
 280         dolog ("set irq level=1\n");
 281         qemu_set_irq(s->pci_dev->irq[0], 1);
 282     }
 283     else {
 284         s->glob_sta &= ~masks[r - s->bm_regs];
 285         dolog ("set irq level=0\n");
 286         qemu_set_irq(s->pci_dev->irq[0], 0);
 287     }
 288 }
 289
 290 static void voice_set_active (AC97LinkState *s, int bm_index, int on)
 291 {
 292     switch (bm_index) {
 293     case PI_INDEX:
 294         AUD_set_active_in (s->voice_pi, on);
 295         break;
 296
 297     case PO_INDEX:
 298         AUD_set_active_out (s->voice_po, on);
 299         break;
 300
 301     case MC_INDEX:
 302         AUD_set_active_in (s->voice_mc, on);
 303         break;
 304
 305     default:
 306         AUD_log ("ac97", "invalid bm_index(%d) in voice_set_active", bm_index);
 307         break;
 308     }
 309 }
 310
 311 static void reset_bm_regs (AC97LinkState *s, AC97BusMasterRegs *r)
 312 {
 313     dolog ("reset_bm_regs\n");
 314     r->bdbar = 0;
 315     r->civ = 0;
 316     r->lvi = 0;
 317     /** todo do we need to do that? */
 318     update_sr (s, r, SR_DCH);
 319     r->picb = 0;
 320     r->piv = 0;
 321     r->cr = r->cr & CR_DONT_CLEAR_MASK;
 322     r->bd_valid = 0;
 323
 324     voice_set_active (s, r - s->bm_regs, 0);
 325     memset (s->silence, 0, sizeof (s->silence));
 326 }
 327
 328 static void mixer_store (AC97LinkState *s, uint32_t i, uint16_t v)
 329 {
 330     if (i + 2 > sizeof (s->mixer_data)) {
 331         dolog ("mixer_store: index %d out of bounds %d\n",
 332                i, sizeof (s->mixer_data));
 333         return;
 334     }
 335
 336     s->mixer_data[i + 0] = v & 0xff;
 337     s->mixer_data[i + 1] = v >> 8;
 338 }
 339
 340 static uint16_t mixer_load (AC97LinkState *s, uint32_t i)
 341 {
 342     uint16_t val = 0xffff;
 343
 344     if (i + 2 > sizeof (s->mixer_data)) {
 345         dolog ("mixer_store: index %d out of bounds %d\n",
 346                i, sizeof (s->mixer_data));
 347     }
 348     else {
 349         val = s->mixer_data[i + 0] | (s->mixer_data[i + 1] << 8);
 350     }
 351
 352     return val;
 353 }
 354
 355 static void open_voice (AC97LinkState *s, int index, int freq)
 356 {
 357     audsettings_t as;
 358
 359     as.freq = freq;
 360     as.nchannels = 2;
 361     as.fmt = AUD_FMT_S16;
 362     as.endianness = 0;
 363
 364     if (freq > 0) {
 365         s->invalid_freq[index] = 0;
 366         switch (index) {
 367         case PI_INDEX:
 368             s->voice_pi = AUD_open_in (
 369                 &s->card,
 370                 s->voice_pi,
 371                 "ac97.pi",
 372                 s,
 373                 pi_callback,
 374                 &as
 375                 );
 376             break;
 377
 378         case PO_INDEX:
 379             s->voice_po = AUD_open_out (
 380                 &s->card,
 381                 s->voice_po,
 382                 "ac97.po",
 383                 s,
 384                 po_callback,
 385                 &as
 386                 );
 387             break;
 388
 389         case MC_INDEX:
 390             s->voice_mc = AUD_open_in (
 391                 &s->card,
 392                 s->voice_mc,
 393                 "ac97.mc",
 394                 s,
 395                 mc_callback,
 396                 &as
 397                 );
 398             break;
 399         }
 400     }
 401     else {
 402         s->invalid_freq[index] = freq;
 403         switch (index) {
 404         case PI_INDEX:
 405             AUD_close_in (&s->card, s->voice_pi);
 406             s->voice_pi = NULL;
 407             break;
 408
 409         case PO_INDEX:
 410             AUD_close_out (&s->card, s->voice_po);
 411             s->voice_po = NULL;
 412             break;
 413
 414         case MC_INDEX:
 415             AUD_close_in (&s->card, s->voice_mc);
 416             s->voice_mc = NULL;
 417             break;
 418         }
 419     }
 420 }
 421
 422 static void reset_voices (AC97LinkState *s, uint8_t active[LAST_INDEX])
 423 {
 424     uint16_t freq;
 425
 426     freq = mixer_load (s, AC97_PCM_LR_ADC_Rate);
 427     open_voice (s, PI_INDEX, freq);
 428     AUD_set_active_in (s->voice_pi, active[PI_INDEX]);
 429
 430     freq = mixer_load (s, AC97_PCM_Front_DAC_Rate);
 431     open_voice (s, PO_INDEX, freq);
 432     AUD_set_active_out (s->voice_po, active[PO_INDEX]);
 433
 434     freq = mixer_load (s, AC97_MIC_ADC_Rate);
 435     open_voice (s, MC_INDEX, freq);
 436     AUD_set_active_in (s->voice_mc, active[MC_INDEX]);
 437 }
 438
 439 #ifdef USE_MIXER
 440 static void set_volume (AC97LinkState *s, int index,
 441                         audmixerctl_t mt, uint32_t val)
 442 {
 443     int mute = (val >> MUTE_SHIFT) & 1;
 444     uint8_t rvol = VOL_MASK - (val & VOL_MASK);
 445     uint8_t lvol = VOL_MASK - ((val >> 8) & VOL_MASK);
 446     rvol = 255 * rvol / VOL_MASK;
 447     lvol = 255 * lvol / VOL_MASK;
 448
 449 #ifdef SOFT_VOLUME
 450     if (index == AC97_Master_Volume_Mute) {
 451         AUD_set_volume_out (s->voice_po, mute, lvol, rvol);
 452     }
 453     else {
 454         AUD_set_volume (mt, &mute, &lvol, &rvol);
 455     }
 456 #else
 457     AUD_set_volume (mt, &mute, &lvol, &rvol);
 458 #endif
 459
 460     rvol = VOL_MASK - ((VOL_MASK * rvol) / 255);
 461     lvol = VOL_MASK - ((VOL_MASK * lvol) / 255);
 462     mixer_store (s, index, val);
 463 }
 464
 465 static audrecsource_t ac97_to_aud_record_source (uint8_t i)
 466 {
 467     switch (i) {
 468     case REC_MIC:
 469         return AUD_REC_MIC;
 470
 471     case REC_CD:
 472         return AUD_REC_CD;
 473
 474     case REC_VIDEO:
 475         return AUD_REC_VIDEO;
 476
 477     case REC_AUX:
 478         return AUD_REC_AUX;
 479
 480     case REC_LINE_IN:
 481         return AUD_REC_LINE_IN;
 482
 483     case REC_PHONE:
 484         return AUD_REC_PHONE;
 485
 486     default:
 487         dolog ("Unknown record source %d, using MIC\n", i);
 488         return AUD_REC_MIC;
 489     }
 490 }
 491
 492 static uint8_t aud_to_ac97_record_source (audrecsource_t rs)
 493 {
 494     switch (rs) {
 495     case AUD_REC_MIC:
 496         return REC_MIC;
 497
 498     case AUD_REC_CD:
 499         return REC_CD;
 500
 501     case AUD_REC_VIDEO:
 502         return REC_VIDEO;
 503
 504     case AUD_REC_AUX:
 505         return REC_AUX;
 506
 507     case AUD_REC_LINE_IN:
 508         return REC_LINE_IN;
 509
 510     case AUD_REC_PHONE:
 511         return REC_PHONE;
 512
 513     default:
 514         dolog ("Unknown audio recording source %d using MIC\n", rs);
 515         return REC_MIC;
 516     }
 517 }
 518
 519 static void record_select (AC97LinkState *s, uint32_t val)
 520 {
 521     uint8_t rs = val & REC_MASK;
 522     uint8_t ls = (val >> 8) & REC_MASK;
 523     audrecsource_t ars = ac97_to_aud_record_source (rs);
 524     audrecsource_t als = ac97_to_aud_record_source (ls);
 525     AUD_set_record_source (&als, &ars);
 526     rs = aud_to_ac97_record_source (ars);
 527     ls = aud_to_ac97_record_source (als);
 528     mixer_store (s, AC97_Record_Select, rs | (ls << 8));
 529 }
 530 #endif
 531
 532 static void mixer_reset (AC97LinkState *s)
 533 {
 534     uint8_t active[LAST_INDEX];
 535
 536     dolog ("mixer_reset\n");
 537     memset (s->mixer_data, 0, sizeof (s->mixer_data));
 538     memset (active, 0, sizeof (active));
 539     mixer_store (s, AC97_Reset                   , 0x0000); /* 6940 */
 540     mixer_store (s, AC97_Master_Volume_Mono_Mute , 0x8000);
 541     mixer_store (s, AC97_PC_BEEP_Volume_Mute     , 0x0000);
 542
 543     mixer_store (s, AC97_Phone_Volume_Mute       , 0x8008);
 544     mixer_store (s, AC97_Mic_Volume_Mute         , 0x8008);
 545     mixer_store (s, AC97_CD_Volume_Mute          , 0x8808);
 546     mixer_store (s, AC97_Aux_Volume_Mute         , 0x8808);
 547     mixer_store (s, AC97_Record_Gain_Mic_Mute    , 0x8000);
 548     mixer_store (s, AC97_General_Purpose         , 0x0000);
 549     mixer_store (s, AC97_3D_Control              , 0x0000);
 550     mixer_store (s, AC97_Powerdown_Ctrl_Stat     , 0x000f);
 551
 552     /*
 553      * Sigmatel 9700 (STAC9700)
 554      */
 555     mixer_store (s, AC97_Vendor_ID1              , 0x8384);
 556     mixer_store (s, AC97_Vendor_ID2              , 0x7600); /* 7608 */
 557
 558     mixer_store (s, AC97_Extended_Audio_ID       , 0x0809);
 559     mixer_store (s, AC97_Extended_Audio_Ctrl_Stat, 0x0009);
 560     mixer_store (s, AC97_PCM_Front_DAC_Rate      , 0xbb80);
 561     mixer_store (s, AC97_PCM_Surround_DAC_Rate   , 0xbb80);
 562     mixer_store (s, AC97_PCM_LFE_DAC_Rate        , 0xbb80);
 563     mixer_store (s, AC97_PCM_LR_ADC_Rate         , 0xbb80);
 564     mixer_store (s, AC97_MIC_ADC_Rate            , 0xbb80);
 565
 566 #ifdef USE_MIXER
 567     record_select (s, 0);
 568     set_volume (s, AC97_Master_Volume_Mute, AUD_MIXER_VOLUME  , 0x8000);
 569     set_volume (s, AC97_PCM_Out_Volume_Mute, AUD_MIXER_PCM    , 0x8808);
 570     set_volume (s, AC97_Line_In_Volume_Mute, AUD_MIXER_LINE_IN, 0x8808);
 571 #endif
 572     reset_voices (s, active);
 573 }
 574
 575 /**
 576  * Native audio mixer
 577  * I/O Reads
 578  */
 579 static uint32_t nam_readb (void *opaque, uint32_t addr)
 580 {
 581     PCIAC97LinkState *d = opaque;
 582     AC97LinkState *s = &d->ac97;
 583     dolog ("U nam readb %#x\n", addr);
 584     s->cas = 0;
 585     return ~0U;
 586 }
 587
 588 static uint32_t nam_readw (void *opaque, uint32_t addr)
 589 {
 590     PCIAC97LinkState *d = opaque;
 591     AC97LinkState *s = &d->ac97;
 592     uint32_t val = ~0U;
 593     uint32_t index = addr - s->base[0];
 594     s->cas = 0;
 595     val = mixer_load (s, index);
 596     return val;
 597 }
 598
 599 static uint32_t nam_readl (void *opaque, uint32_t addr)
 600 {
 601     PCIAC97LinkState *d = opaque;
 602     AC97LinkState *s = &d->ac97;
 603     dolog ("U nam readl %#x\n", addr);
 604     s->cas = 0;
 605     return ~0U;
 606 }
 607
 608 /**
 609  * Native audio mixer
 610  * I/O Writes
 611  */
 612 static void nam_writeb (void *opaque, uint32_t addr, uint32_t val)
 613 {
 614     PCIAC97LinkState *d = opaque;
 615     AC97LinkState *s = &d->ac97;
 616     dolog ("U nam writeb %#x <- %#x\n", addr, val);
 617     s->cas = 0;
 618 }
 619
 620 static void nam_writew (void *opaque, uint32_t addr, uint32_t val)
 621 {
 622     PCIAC97LinkState *d = opaque;
 623     AC97LinkState *s = &d->ac97;
 624     uint32_t index = addr - s->base[0];
 625     s->cas = 0;
 626     switch (index) {
 627     case AC97_Reset:
 628         mixer_reset (s);
 629         break;
 630     case AC97_Powerdown_Ctrl_Stat:
 631         val &= ~0xf;
 632         val |= mixer_load (s, index) & 0xf;
 633         mixer_store (s, index, val);
 634         break;
 635 #ifdef USE_MIXER
 636     case AC97_Master_Volume_Mute:
 637         set_volume (s, index, AUD_MIXER_VOLUME, val);
 638         break;
 639     case AC97_PCM_Out_Volume_Mute:
 640         set_volume (s, index, AUD_MIXER_PCM, val);
 641         break;
 642     case AC97_Line_In_Volume_Mute:
 643         set_volume (s, index, AUD_MIXER_LINE_IN, val);
 644         break;
 645     case AC97_Record_Select:
 646         record_select (s, val);
 647         break;
 648 #endif
 649     case AC97_Vendor_ID1:
 650     case AC97_Vendor_ID2:
 651         dolog ("Attempt to write vendor ID to %#x\n", val);
 652         break;
 653     case AC97_Extended_Audio_ID:
 654         dolog ("Attempt to write extended audio ID to %#x\n", val);
 655         break;
 656     case AC97_Extended_Audio_Ctrl_Stat:
 657         if (!(val & EACS_VRA)) {
 658             mixer_store (s, AC97_PCM_Front_DAC_Rate, 0xbb80);
 659             mixer_store (s, AC97_PCM_LR_ADC_Rate,    0xbb80);
 660             open_voice (s, PI_INDEX, 48000);
 661             open_voice (s, PO_INDEX, 48000);
 662         }
 663         if (!(val & EACS_VRM)) {
 664             mixer_store (s, AC97_MIC_ADC_Rate, 0xbb80);
 665             open_voice (s, MC_INDEX, 48000);
 666         }
 667         dolog ("Setting extended audio control to %#x\n", val);
 668         mixer_store (s, AC97_Extended_Audio_Ctrl_Stat, val);
 669         break;
 670     case AC97_PCM_Front_DAC_Rate:
 671         if (mixer_load (s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRA) {
 672             mixer_store (s, index, val);
 673             dolog ("Set front DAC rate to %d\n", val);
 674             open_voice (s, PO_INDEX, val);
 675         }
 676         else {
 677             dolog ("Attempt to set front DAC rate to %d, "
 678                    "but VRA is not set\n",
 679                    val);
 680         }
 681         break;
 682     case AC97_MIC_ADC_Rate:
 683         if (mixer_load (s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRM) {
 684             mixer_store (s, index, val);
 685             dolog ("Set MIC ADC rate to %d\n", val);
 686             open_voice (s, MC_INDEX, val);
 687         }
 688         else {
 689             dolog ("Attempt to set MIC ADC rate to %d, "
 690                    "but VRM is not set\n",
 691                    val);
 692         }
 693         break;
 694     case AC97_PCM_LR_ADC_Rate:
 695         if (mixer_load (s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRA) {
 696             mixer_store (s, index, val);
 697             dolog ("Set front LR ADC rate to %d\n", val);
 698             open_voice (s, PI_INDEX, val);
 699         }
 700         else {
 701             dolog ("Attempt to set LR ADC rate to %d, but VRA is not set\n",
 702                     val);
 703         }
 704         break;
 705     default:
 706         dolog ("U nam writew %#x <- %#x\n", addr, val);
 707         mixer_store (s, index, val);
 708         break;
 709     }
 710 }
 711
 712 static void nam_writel (void *opaque, uint32_t addr, uint32_t val)
 713 {
 714     PCIAC97LinkState *d = opaque;
 715     AC97LinkState *s = &d->ac97;
 716     dolog ("U nam writel %#x <- %#x\n", addr, val);
 717     s->cas = 0;
 718 }
 719
 720 /**
 721  * Native audio bus master
 722  * I/O Reads
 723  */
 724 static uint32_t nabm_readb (void *opaque, uint32_t addr)
 725 {
 726     PCIAC97LinkState *d = opaque;
 727     AC97LinkState *s = &d->ac97;
 728     AC97BusMasterRegs *r = NULL;
 729     uint32_t index = addr - s->base[1];
 730     uint32_t val = ~0U;
 731
 732     switch (index) {
 733     case CAS:
 734         dolog ("CAS %d\n", s->cas);
 735         val = s->cas;
 736         s->cas = 1;
 737         break;
 738     case PI_CIV:
 739     case PO_CIV:
 740     case MC_CIV:
 741         r = &s->bm_regs[GET_BM (index)];
 742         val = r->civ;
 743         dolog ("CIV[%d] -> %#x\n", GET_BM (index), val);
 744         break;
 745     case PI_LVI:
 746     case PO_LVI:
 747     case MC_LVI:
 748         r = &s->bm_regs[GET_BM (index)];
 749         val = r->lvi;
 750         dolog ("LVI[%d] -> %#x\n", GET_BM (index), val);
 751         break;
 752     case PI_PIV:
 753     case PO_PIV:
 754     case MC_PIV:
 755         r = &s->bm_regs[GET_BM (index)];
 756         val = r->piv;
 757         dolog ("PIV[%d] -> %#x\n", GET_BM (index), val);
 758         break;
 759     case PI_CR:
 760     case PO_CR:
 761     case MC_CR:
 762         r = &s->bm_regs[GET_BM (index)];
 763         val = r->cr;
 764         dolog ("CR[%d] -> %#x\n", GET_BM (index), val);
 765         break;
 766     case PI_SR:
 767     case PO_SR:
 768     case MC_SR:
 769         r = &s->bm_regs[GET_BM (index)];
 770         val = r->sr & 0xff;
 771         dolog ("SRb[%d] -> %#x\n", GET_BM (index), val);
 772         break;
 773     default:
 774         dolog ("U nabm readb %#x -> %#x\n", addr, val);
 775         break;
 776     }
 777     return val;
 778 }
 779
 780 static uint32_t nabm_readw (void *opaque, uint32_t addr)
 781 {
 782     PCIAC97LinkState *d = opaque;
 783     AC97LinkState *s = &d->ac97;
 784     AC97BusMasterRegs *r = NULL;
 785     uint32_t index = addr - s->base[1];
 786     uint32_t val = ~0U;
 787
 788     switch (index) {
 789     case PI_SR:
 790     case PO_SR:
 791     case MC_SR:
 792         r = &s->bm_regs[GET_BM (index)];
 793         val = r->sr;
 794         dolog ("SR[%d] -> %#x\n", GET_BM (index), val);
 795         break;
 796     case PI_PICB:
 797     case PO_PICB:
 798     case MC_PICB:
 799         r = &s->bm_regs[GET_BM (index)];
 800         val = r->picb;
 801         dolog ("PICB[%d] -> %#x\n", GET_BM (index), val);
 802         break;
 803     default:
 804         dolog ("U nabm readw %#x -> %#x\n", addr, val);
 805         break;
 806     }
 807     return val;
 808 }
 809
 810 static uint32_t nabm_readl (void *opaque, uint32_t addr)
 811 {
 812     PCIAC97LinkState *d = opaque;
 813     AC97LinkState *s = &d->ac97;
 814     AC97BusMasterRegs *r = NULL;
 815     uint32_t index = addr - s->base[1];
 816     uint32_t val = ~0U;
 817
 818     switch (index) {
 819     case PI_BDBAR:
 820     case PO_BDBAR:
 821     case MC_BDBAR:
 822         r = &s->bm_regs[GET_BM (index)];
 823         val = r->bdbar;
 824         dolog ("BMADDR[%d] -> %#x\n", GET_BM (index), val);
 825         break;
 826     case PI_CIV:
 827     case PO_CIV:
 828     case MC_CIV:
 829         r = &s->bm_regs[GET_BM (index)];
 830         val = r->civ | (r->lvi << 8) | (r->sr << 16);
 831         dolog ("CIV LVI SR[%d] -> %#x, %#x, %#x\n", GET_BM (index),
 832                r->civ, r->lvi, r->sr);
 833         break;
 834     case PI_PICB:
 835     case PO_PICB:
 836     case MC_PICB:
 837         r = &s->bm_regs[GET_BM (index)];
 838         val = r->picb | (r->piv << 16) | (r->cr << 24);
 839         dolog ("PICB PIV CR[%d] -> %#x %#x %#x %#x\n", GET_BM (index),
 840                val, r->picb, r->piv, r->cr);
 841         break;
 842     case GLOB_CNT:
 843         val = s->glob_cnt;
 844         dolog ("glob_cnt -> %#x\n", val);
 845         break;
 846     case GLOB_STA:
 847         val = s->glob_sta | GS_S0CR;
 848         dolog ("glob_sta -> %#x\n", val);
 849         break;
 850     default:
 851         dolog ("U nabm readl %#x -> %#x\n", addr, val);
 852         break;
 853     }
 854     return val;
 855 }
 856
 857 /**
 858  * Native audio bus master
 859  * I/O Writes
 860  */
 861 static void nabm_writeb (void *opaque, uint32_t addr, uint32_t val)
 862 {
 863     PCIAC97LinkState *d = opaque;
 864     AC97LinkState *s = &d->ac97;
 865     AC97BusMasterRegs *r = NULL;
 866     uint32_t index = addr - s->base[1];
 867     switch (index) {
 868     case PI_LVI:
 869     case PO_LVI:
 870     case MC_LVI:
 871         r = &s->bm_regs[GET_BM (index)];
 872         if ((r->cr & CR_RPBM) && (r->sr & SR_DCH)) {
 873             r->sr &= ~(SR_DCH | SR_CELV);
 874             r->civ = r->piv;
 875             r->piv = (r->piv + 1) % 32;
 876             fetch_bd (s, r);
 877         }
 878         r->lvi = val % 32;
 879         dolog ("LVI[%d] <- %#x\n", GET_BM (index), val);
 880         break;
 881     case PI_CR:
 882     case PO_CR:
 883     case MC_CR:
 884         r = &s->bm_regs[GET_BM (index)];
 885         if (val & CR_RR) {
 886             reset_bm_regs (s, r);
 887         }
 888         else {
 889             r->cr = val & CR_VALID_MASK;
 890             if (!(r->cr & CR_RPBM)) {
 891                 voice_set_active (s, r - s->bm_regs, 0);
 892                 r->sr |= SR_DCH;
 893             }
 894             else {
 895                 r->civ = r->piv;
 896                 r->piv = (r->piv + 1) % 32;
 897                 fetch_bd (s, r);
 898                 r->sr &= ~SR_DCH;
 899                 voice_set_active (s, r - s->bm_regs, 1);
 900             }
 901         }
 902         dolog ("CR[%d] <- %#x (cr %#x)\n", GET_BM (index), val, r->cr);
 903         break;
 904     case PI_SR:
 905     case PO_SR:
 906     case MC_SR:
 907         r = &s->bm_regs[GET_BM (index)];
 908         r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
 909         update_sr (s, r, r->sr & ~(val & SR_WCLEAR_MASK));
 910         dolog ("SR[%d] <- %#x (sr %#x)\n", GET_BM (index), val, r->sr);
 911         break;
 912     default:
 913         dolog ("U nabm writeb %#x <- %#x\n", addr, val);
 914         break;
 915     }
 916 }
 917
 918 static void nabm_writew (void *opaque, uint32_t addr, uint32_t val)
 919 {
 920     PCIAC97LinkState *d = opaque;
 921     AC97LinkState *s = &d->ac97;
 922     AC97BusMasterRegs *r = NULL;
 923     uint32_t index = addr - s->base[1];
 924     switch (index) {
 925     case PI_SR:
 926     case PO_SR:
 927     case MC_SR:
 928         r = &s->bm_regs[GET_BM (index)];
 929         r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
 930         update_sr (s, r, r->sr & ~(val & SR_WCLEAR_MASK));
 931         dolog ("SR[%d] <- %#x (sr %#x)\n", GET_BM (index), val, r->sr);
 932         break;
 933     default:
 934         dolog ("U nabm writew %#x <- %#x\n", addr, val);
 935         break;
 936     }
 937 }
 938
 939 static void nabm_writel (void *opaque, uint32_t addr, uint32_t val)
 940 {
 941     PCIAC97LinkState *d = opaque;
 942     AC97LinkState *s = &d->ac97;
 943     AC97BusMasterRegs *r = NULL;
 944     uint32_t index = addr - s->base[1];
 945     switch (index) {
 946     case PI_BDBAR:
 947     case PO_BDBAR:
 948     case MC_BDBAR:
 949         r = &s->bm_regs[GET_BM (index)];
 950         r->bdbar = val & ~3;
 951         dolog ("BDBAR[%d] <- %#x (bdbar %#x)\n",
 952                GET_BM (index), val, r->bdbar);
 953         break;
 954     case GLOB_CNT:
 955         if (val & GC_WR)
 956             warm_reset (s);
 957         if (val & GC_CR)
 958             cold_reset (s);
 959         if (!(val & (GC_WR | GC_CR)))
 960             s->glob_cnt = val & GC_VALID_MASK;
 961         dolog ("glob_cnt <- %#x (glob_cnt %#x)\n", val, s->glob_cnt);
 962         break;
 963     case GLOB_STA:
 964         s->glob_sta &= ~(val & GS_WCLEAR_MASK);
 965         s->glob_sta |= (val & ~(GS_WCLEAR_MASK | GS_RO_MASK)) & GS_VALID_MASK;
 966         dolog ("glob_sta <- %#x (glob_sta %#x)\n", val, s->glob_sta);
 967         break;
 968     default:
 969         dolog ("U nabm writel %#x <- %#x\n", addr, val);
 970         break;
 971     }
 972 }
 973
 974 static int write_audio (AC97LinkState *s, AC97BusMasterRegs *r,
 975                         int max, int *stop)
 976 {
 977     uint8_t tmpbuf[4096];
 978     uint32_t addr = r->bd.addr;
 979     uint32_t temp = r->picb << 1;
 980     uint32_t written = 0;
 981     int to_copy = 0;
 982     temp = audio_MIN (temp, max);
 983
 984     if (!temp) {
 985         *stop = 1;
 986         return 0;
 987     }
 988
 989     while (temp) {
 990         int copied;
 991         to_copy = audio_MIN (temp, sizeof (tmpbuf));
 992         cpu_physical_memory_read (addr, tmpbuf, to_copy);
 993         copied = AUD_write (s->voice_po, tmpbuf, to_copy);
 994         dolog ("write_audio max=%x to_copy=%x copied=%x\n",
 995                max, to_copy, copied);
 996         if (!copied) {
 997             *stop = 1;
 998             break;
 999         }
1000         temp -= copied;
1001         addr += copied;
1002         written += copied;
1003     }
1004
1005     if (!temp) {
1006         if (to_copy < 4) {
1007             dolog ("whoops\n");
1008             s->last_samp = 0;
1009         }
1010         else {
1011             s->last_samp = *(uint32_t *) &tmpbuf[to_copy - 4];
1012         }
1013     }
1014
1015     r->bd.addr = addr;
1016     return written;
1017 }
1018
1019 static void write_bup (AC97LinkState *s, int elapsed)
1020 {
1021     int written = 0;
1022
1023     dolog ("write_bup\n");
1024     if (!(s->bup_flag & BUP_SET)) {
1025         if (s->bup_flag & BUP_LAST) {
1026             int i;
1027             uint8_t *p = s->silence;
1028             for (i = 0; i < sizeof (s->silence) / 4; i++, p += 4) {
1029                 *(uint32_t *) p = s->last_samp;
1030             }
1031         }
1032         else {
1033             memset (s->silence, 0, sizeof (s->silence));
1034         }
1035         s->bup_flag |= BUP_SET;
1036     }
1037
1038     while (elapsed) {
1039         int temp = audio_MIN (elapsed, sizeof (s->silence));
1040         while (temp) {
1041             int copied = AUD_write (s->voice_po, s->silence, temp);
1042             if (!copied)
1043                 return;
1044             temp -= copied;
1045             elapsed -= copied;
1046             written += copied;
1047         }
1048     }
1049 }
1050
1051 static int read_audio (AC97LinkState *s, AC97BusMasterRegs *r,
1052                        int max, int *stop)
1053 {
1054     uint8_t tmpbuf[4096];
1055     uint32_t addr = r->bd.addr;
1056     uint32_t temp = r->picb << 1;
1057     uint32_t nread = 0;
1058     int to_copy = 0;
1059     SWVoiceIn *voice = (r - s->bm_regs) == MC_INDEX ? s->voice_mc : s->voice_pi;
1060
1061     temp = audio_MIN (temp, max);
1062
1063     if (!temp) {
1064         *stop = 1;
1065         return 0;
1066     }
1067
1068     while (temp) {
1069         int acquired;
1070         to_copy = audio_MIN (temp, sizeof (tmpbuf));
1071         acquired = AUD_read (voice, tmpbuf, to_copy);
1072         if (!acquired) {
1073             *stop = 1;
1074             break;
1075         }
1076         cpu_physical_memory_write (addr, tmpbuf, acquired);
1077         temp -= acquired;
1078         addr += acquired;
1079         nread += acquired;
1080     }
1081
1082     r->bd.addr = addr;
1083     return nread;
1084 }
1085
1086 static void transfer_audio (AC97LinkState *s, int index, int elapsed)
1087 {
1088     AC97BusMasterRegs *r = &s->bm_regs[index];
1089     int written = 0, stop = 0;
1090
1091     if (s->invalid_freq[index]) {
1092         AUD_log ("ac97", "attempt to use voice %d with invalid frequency %d\n",
1093                  index, s->invalid_freq[index]);
1094         return;
1095     }
1096
1097     if (r->sr & SR_DCH) {
1098         if (r->cr & CR_RPBM) {
1099             switch (index) {
1100             case PO_INDEX:
1101                 write_bup (s, elapsed);
1102                 break;
1103             }
1104         }
1105         return;
1106     }
1107
1108     while ((elapsed >> 1) && !stop) {
1109         int temp;
1110
1111         if (!r->bd_valid) {
1112             dolog ("invalid bd\n");
1113             fetch_bd (s, r);
1114         }
1115
1116         if (!r->picb) {
1117             dolog ("fresh bd %d is empty %#x %#x\n",
1118                    r->civ, r->bd.addr, r->bd.ctl_len);
1119             if (r->civ == r->lvi) {
1120                 r->sr |= SR_DCH; /* CELV? */
1121                 s->bup_flag = 0;
1122                 break;
1123             }
1124             r->sr &= ~SR_CELV;
1125             r->civ = r->piv;
1126             r->piv = (r->piv + 1) % 32;
1127             fetch_bd (s, r);
1128             return;
1129         }
1130
1131         switch (index) {
1132         case PO_INDEX:
1133             temp = write_audio (s, r, elapsed, &stop);
1134             written += temp;
1135             elapsed -= temp;
1136             r->picb -= (temp >> 1);
1137             break;
1138
1139         case PI_INDEX:
1140         case MC_INDEX:
1141             temp = read_audio (s, r, elapsed, &stop);
1142             elapsed -= temp;
1143             r->picb -= (temp >> 1);
1144             break;
1145         }
1146
1147         if (!r->picb) {
1148             uint32_t new_sr = r->sr & ~SR_CELV;
1149
1150             if (r->bd.ctl_len & BD_IOC) {
1151                 new_sr |= SR_BCIS;
1152             }
1153
1154             if (r->civ == r->lvi) {
1155                 dolog ("Underrun civ (%d) == lvi (%d)\n", r->civ, r->lvi);
1156
1157                 new_sr |= SR_LVBCI | SR_DCH | SR_CELV;
1158                 stop = 1;
1159                 s->bup_flag = (r->bd.ctl_len & BD_BUP) ? BUP_LAST : 0;
1160             }
1161             else {
1162                 r->civ = r->piv;
1163                 r->piv = (r->piv + 1) % 32;
1164                 fetch_bd (s, r);
1165             }
1166
1167             update_sr (s, r, new_sr);
1168         }
1169     }
1170 }
1171
1172 static void pi_callback (void *opaque, int avail)
1173 {
1174     transfer_audio (opaque, PI_INDEX, avail);
1175 }
1176
1177 static void mc_callback (void *opaque, int avail)
1178 {
1179     transfer_audio (opaque, MC_INDEX, avail);
1180 }
1181
1182 static void po_callback (void *opaque, int free)
1183 {
1184     transfer_audio (opaque, PO_INDEX, free);
1185 }
1186
1187 static void ac97_save (QEMUFile *f, void *opaque)
1188 {
1189     size_t i;
1190     uint8_t active[LAST_INDEX];
1191     AC97LinkState *s = opaque;
1192
1193     pci_device_save (s->pci_dev, f);
1194
1195     qemu_put_be32s (f, &s->glob_cnt);
1196     qemu_put_be32s (f, &s->glob_sta);
1197     qemu_put_be32s (f, &s->cas);
1198
1199     for (i = 0; i < sizeof (s->bm_regs) / sizeof (s->bm_regs[0]); ++i) {
1200         AC97BusMasterRegs *r = &s->bm_regs[i];
1201         qemu_put_be32s (f, &r->bdbar);
1202         qemu_put_8s (f, &r->civ);
1203         qemu_put_8s (f, &r->lvi);
1204         qemu_put_be16s (f, &r->sr);
1205         qemu_put_be16s (f, &r->picb);
1206         qemu_put_8s (f, &r->piv);
1207         qemu_put_8s (f, &r->cr);
1208         qemu_put_be32s (f, &r->bd_valid);
1209         qemu_put_be32s (f, &r->bd.addr);
1210         qemu_put_be32s (f, &r->bd.ctl_len);
1211     }
1212     qemu_put_buffer (f, s->mixer_data, sizeof (s->mixer_data));
1213
1214     active[PI_INDEX] = AUD_is_active_in (s->voice_pi) ? 1 : 0;
1215     active[PO_INDEX] = AUD_is_active_out (s->voice_po) ? 1 : 0;
1216     active[MC_INDEX] = AUD_is_active_in (s->voice_mc) ? 1 : 0;
1217     qemu_put_buffer (f, active, sizeof (active));
1218 }
1219
1220 static int ac97_load (QEMUFile *f, void *opaque, int version_id)
1221 {
1222     int ret;
1223     size_t i;
1224     uint8_t active[LAST_INDEX];
1225     AC97LinkState *s = opaque;
1226
1227     if (version_id != 2)
1228         return -EINVAL;
1229
1230     ret = pci_device_load (s->pci_dev, f);
1231     if (ret)
1232         return ret;
1233
1234     qemu_get_be32s (f, &s->glob_cnt);
1235     qemu_get_be32s (f, &s->glob_sta);
1236     qemu_get_be32s (f, &s->cas);
1237
1238     for (i = 0; i < sizeof (s->bm_regs) / sizeof (s->bm_regs[0]); ++i) {
1239         AC97BusMasterRegs *r = &s->bm_regs[i];
1240         qemu_get_be32s (f, &r->bdbar);
1241         qemu_get_8s (f, &r->civ);
1242         qemu_get_8s (f, &r->lvi);
1243         qemu_get_be16s (f, &r->sr);
1244         qemu_get_be16s (f, &r->picb);
1245         qemu_get_8s (f, &r->piv);
1246         qemu_get_8s (f, &r->cr);
1247         qemu_get_be32s (f, &r->bd_valid);
1248         qemu_get_be32s (f, &r->bd.addr);
1249         qemu_get_be32s (f, &r->bd.ctl_len);
1250     }
1251     qemu_get_buffer (f, s->mixer_data, sizeof (s->mixer_data));
1252     qemu_get_buffer (f, active, sizeof (active));
1253
1254 #ifdef USE_MIXER
1255     record_select (s, mixer_load (s, AC97_Record_Select));
1256 #define V_(a, b) set_volume (s, a, b, mixer_load (s, a))
1257     V_ (AC97_Master_Volume_Mute, AUD_MIXER_VOLUME);
1258     V_ (AC97_PCM_Out_Volume_Mute, AUD_MIXER_PCM);
1259     V_ (AC97_Line_In_Volume_Mute, AUD_MIXER_LINE_IN);
1260 #undef V_
1261 #endif
1262     reset_voices (s, active);
1263
1264     s->bup_flag = 0;
1265     s->last_samp = 0;
1266     return 0;
1267 }
1268
1269 static void ac97_map (PCIDevice *pci_dev, int region_num,
1270                       uint32_t addr, uint32_t size, int type)
1271 {
1272     PCIAC97LinkState *d = (PCIAC97LinkState *) pci_dev;
1273     AC97LinkState *s = &d->ac97;
1274
1275     if (!region_num) {
1276         s->base[0] = addr;
1277         register_ioport_read (addr, 256 * 1, 1, nam_readb, d);
1278         register_ioport_read (addr, 256 * 2, 2, nam_readw, d);
1279         register_ioport_read (addr, 256 * 4, 4, nam_readl, d);
1280         register_ioport_write (addr, 256 * 1, 1, nam_writeb, d);
1281         register_ioport_write (addr, 256 * 2, 2, nam_writew, d);
1282         register_ioport_write (addr, 256 * 4, 4, nam_writel, d);
1283     }
1284     else {
1285         s->base[1] = addr;
1286         register_ioport_read (addr, 64 * 1, 1, nabm_readb, d);
1287         register_ioport_read (addr, 64 * 2, 2, nabm_readw, d);
1288         register_ioport_read (addr, 64 * 4, 4, nabm_readl, d);
1289         register_ioport_write (addr, 64 * 1, 1, nabm_writeb, d);
1290         register_ioport_write (addr, 64 * 2, 2, nabm_writew, d);
1291         register_ioport_write (addr, 64 * 4, 4, nabm_writel, d);
1292     }
1293 }
1294
1295 static void ac97_on_reset (void *opaque)
1296 {
1297     AC97LinkState *s = opaque;
1298
1299     reset_bm_regs (s, &s->bm_regs[0]);
1300     reset_bm_regs (s, &s->bm_regs[1]);
1301     reset_bm_regs (s, &s->bm_regs[2]);
1302
1303     /*
1304      * Reset the mixer too. The Windows XP driver seems to rely on
1305      * this. At least it wants to read the vendor id before it resets
1306      * the codec manually.
1307      */
1308     mixer_reset (s);
1309 }
1310
1311 int ac97_init (PCIBus *bus, AudioState *audio)
1312 {
1313     PCIAC97LinkState *d;
1314     AC97LinkState *s;
1315     uint8_t *c;
1316
1317     if (!bus) {
1318         AUD_log ("ac97", "No PCI bus\n");
1319         return -1;
1320     }
1321
1322     if (!audio) {
1323         AUD_log ("ac97", "No audio state\n");
1324         return -1;
1325     }
1326
1327     d = (PCIAC97LinkState *) pci_register_device (bus, "AC97",
1328                                                   sizeof (PCIAC97LinkState),
1329                                                   -1, NULL, NULL);
1330
1331     if (!d) {
1332         AUD_log ("ac97", "Failed to register PCI device\n");
1333         return -1;
1334     }
1335
1336     s = &d->ac97;
1337     s->pci_dev = &d->dev;
1338     c = d->dev.config;
1339     c[0x00] = 0x86;      /* vid vendor id intel ro */
1340     c[0x01] = 0x80;      /* intel */
1341
1342     c[0x02] = 0x15;      /* did device id 82801 ro */
1343     c[0x03] = 0x24;      /* 82801aa */
1344
1345     c[0x04] = 0x00;      /* pcicmd pci command rw, ro */
1346     c[0x05] = 0x00;
1347
1348     c[0x06] = 0x80;      /* pcists pci status rwc, ro */
1349     c[0x07] = 0x02;
1350
1351     c[0x08] = 0x01;      /* rid revision ro */
1352     c[0x09] = 0x00;      /* pi programming interface ro */
1353     c[0x0a] = 0x01;      /* scc sub class code ro */
1354     c[0x0b] = 0x04;      /* bcc base class code ro */
1355     c[0x0e] = 0x00;      /* headtyp header type ro */
1356
1357     c[0x10] = 0x01;      /* nabmar native audio mixer base
1358                             address rw */
1359     c[0x11] = 0x00;
1360     c[0x12] = 0x00;
1361     c[0x13] = 0x00;
1362
1363     c[0x14] = 0x01;      /* nabmbar native audio bus mastering
1364                             base address rw */
1365     c[0x15] = 0x00;
1366     c[0x16] = 0x00;
1367     c[0x17] = 0x00;
1368
1369     c[0x2c] = 0x86;      /* svid subsystem vendor id rwo */
1370     c[0x2d] = 0x80;
1371
1372     c[0x2e] = 0x00;      /* sid subsystem id rwo */
1373     c[0x2f] = 0x00;
1374
1375     c[0x3c] = 0x00;      /* intr_ln interrupt line rw */
1376     c[0x3d] = 0x01;      /* intr_pn interrupt pin ro */
1377
1378     pci_register_io_region (&d->dev, 0, 256 * 4, PCI_ADDRESS_SPACE_IO, ac97_map);
1379     pci_register_io_region (&d->dev, 1, 64 * 4, PCI_ADDRESS_SPACE_IO, ac97_map);
1380     register_savevm ("ac97", 0, 2, ac97_save, ac97_load, s);
1381     qemu_register_reset (ac97_on_reset, s);
1382     AUD_register_card (audio, "ac97", &s->card);
1383     ac97_on_reset (s);
1384     return 0;
1385 }