qemu/hw/audio/es1370.c
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   1/*
   2 * QEMU ES1370 emulation
   3 *
   4 * Copyright (c) 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/* #define DEBUG_ES1370 */
  26/* #define VERBOSE_ES1370 */
  27#define SILENT_ES1370
  28
  29#include "qemu/osdep.h"
  30#include "hw/audio/soundhw.h"
  31#include "audio/audio.h"
  32#include "hw/pci/pci_device.h"
  33#include "migration/vmstate.h"
  34#include "qemu/module.h"
  35#include "sysemu/dma.h"
  36#include "qom/object.h"
  37
  38/* Missing stuff:
  39   SCTRL_P[12](END|ST)INC
  40   SCTRL_P1SCTRLD
  41   SCTRL_P2DACSEN
  42   CTRL_DAC_SYNC
  43   MIDI
  44   non looped mode
  45   surely more
  46*/
  47
  48/*
  49  Following macros and samplerate array were copied verbatim from
  50  Linux kernel 2.4.30: drivers/sound/es1370.c
  51
  52  Copyright (C) 1998-2001, 2003 Thomas Sailer (t.sailer@alumni.ethz.ch)
  53*/
  54
  55/* Start blatant GPL violation */
  56
  57#define ES1370_REG_CONTROL        0x00
  58#define ES1370_REG_STATUS         0x04
  59#define ES1370_REG_UART_DATA      0x08
  60#define ES1370_REG_UART_STATUS    0x09
  61#define ES1370_REG_UART_CONTROL   0x09
  62#define ES1370_REG_UART_TEST      0x0a
  63#define ES1370_REG_MEMPAGE        0x0c
  64#define ES1370_REG_CODEC          0x10
  65#define ES1370_REG_SERIAL_CONTROL 0x20
  66#define ES1370_REG_DAC1_SCOUNT    0x24
  67#define ES1370_REG_DAC2_SCOUNT    0x28
  68#define ES1370_REG_ADC_SCOUNT     0x2c
  69
  70#define ES1370_REG_DAC1_FRAMEADR    0xc30
  71#define ES1370_REG_DAC1_FRAMECNT    0xc34
  72#define ES1370_REG_DAC2_FRAMEADR    0xc38
  73#define ES1370_REG_DAC2_FRAMECNT    0xc3c
  74#define ES1370_REG_ADC_FRAMEADR     0xd30
  75#define ES1370_REG_ADC_FRAMECNT     0xd34
  76#define ES1370_REG_PHANTOM_FRAMEADR 0xd38
  77#define ES1370_REG_PHANTOM_FRAMECNT 0xd3c
  78
  79static const unsigned dac1_samplerate[] = { 5512, 11025, 22050, 44100 };
  80
  81#define DAC2_SRTODIV(x) (((1411200+(x)/2)/(x))-2)
  82#define DAC2_DIVTOSR(x) (1411200/((x)+2))
  83
  84#define CTRL_ADC_STOP   0x80000000  /* 1 = ADC stopped */
  85#define CTRL_XCTL1      0x40000000  /* electret mic bias */
  86#define CTRL_OPEN       0x20000000  /* no function, can be read and written */
  87#define CTRL_PCLKDIV    0x1fff0000  /* ADC/DAC2 clock divider */
  88#define CTRL_SH_PCLKDIV 16
  89#define CTRL_MSFMTSEL   0x00008000  /* MPEG serial data fmt: 0 = Sony, 1 = I2S */
  90#define CTRL_M_SBB      0x00004000  /* DAC2 clock: 0 = PCLKDIV, 1 = MPEG */
  91#define CTRL_WTSRSEL    0x00003000  /* DAC1 clock freq: 0=5512, 1=11025, 2=22050, 3=44100 */
  92#define CTRL_SH_WTSRSEL 12
  93#define CTRL_DAC_SYNC   0x00000800  /* 1 = DAC2 runs off DAC1 clock */
  94#define CTRL_CCB_INTRM  0x00000400  /* 1 = CCB "voice" ints enabled */
  95#define CTRL_M_CB       0x00000200  /* recording source: 0 = ADC, 1 = MPEG */
  96#define CTRL_XCTL0      0x00000100  /* 0 = Line in, 1 = Line out */
  97#define CTRL_BREQ       0x00000080  /* 1 = test mode (internal mem test) */
  98#define CTRL_DAC1_EN    0x00000040  /* enable DAC1 */
  99#define CTRL_DAC2_EN    0x00000020  /* enable DAC2 */
 100#define CTRL_ADC_EN     0x00000010  /* enable ADC */
 101#define CTRL_UART_EN    0x00000008  /* enable MIDI uart */
 102#define CTRL_JYSTK_EN   0x00000004  /* enable Joystick port (presumably at address 0x200) */
 103#define CTRL_CDC_EN     0x00000002  /* enable serial (CODEC) interface */
 104#define CTRL_SERR_DIS   0x00000001  /* 1 = disable PCI SERR signal */
 105
 106#define STAT_INTR       0x80000000  /* wired or of all interrupt bits */
 107#define STAT_CSTAT      0x00000400  /* 1 = codec busy or codec write in progress */
 108#define STAT_CBUSY      0x00000200  /* 1 = codec busy */
 109#define STAT_CWRIP      0x00000100  /* 1 = codec write in progress */
 110#define STAT_VC         0x00000060  /* CCB int source, 0=DAC1, 1=DAC2, 2=ADC, 3=undef */
 111#define STAT_SH_VC      5
 112#define STAT_MCCB       0x00000010  /* CCB int pending */
 113#define STAT_UART       0x00000008  /* UART int pending */
 114#define STAT_DAC1       0x00000004  /* DAC1 int pending */
 115#define STAT_DAC2       0x00000002  /* DAC2 int pending */
 116#define STAT_ADC        0x00000001  /* ADC int pending */
 117
 118#define USTAT_RXINT     0x80        /* UART rx int pending */
 119#define USTAT_TXINT     0x04        /* UART tx int pending */
 120#define USTAT_TXRDY     0x02        /* UART tx ready */
 121#define USTAT_RXRDY     0x01        /* UART rx ready */
 122
 123#define UCTRL_RXINTEN   0x80        /* 1 = enable RX ints */
 124#define UCTRL_TXINTEN   0x60        /* TX int enable field mask */
 125#define UCTRL_ENA_TXINT 0x20        /* enable TX int */
 126#define UCTRL_CNTRL     0x03        /* control field */
 127#define UCTRL_CNTRL_SWR 0x03        /* software reset command */
 128
 129#define SCTRL_P2ENDINC    0x00380000  /*  */
 130#define SCTRL_SH_P2ENDINC 19
 131#define SCTRL_P2STINC     0x00070000  /*  */
 132#define SCTRL_SH_P2STINC  16
 133#define SCTRL_R1LOOPSEL   0x00008000  /* 0 = loop mode */
 134#define SCTRL_P2LOOPSEL   0x00004000  /* 0 = loop mode */
 135#define SCTRL_P1LOOPSEL   0x00002000  /* 0 = loop mode */
 136#define SCTRL_P2PAUSE     0x00001000  /* 1 = pause mode */
 137#define SCTRL_P1PAUSE     0x00000800  /* 1 = pause mode */
 138#define SCTRL_R1INTEN     0x00000400  /* enable interrupt */
 139#define SCTRL_P2INTEN     0x00000200  /* enable interrupt */
 140#define SCTRL_P1INTEN     0x00000100  /* enable interrupt */
 141#define SCTRL_P1SCTRLD    0x00000080  /* reload sample count register for DAC1 */
 142#define SCTRL_P2DACSEN    0x00000040  /* 1 = DAC2 play back last sample when disabled */
 143#define SCTRL_R1SEB       0x00000020  /* 1 = 16bit */
 144#define SCTRL_R1SMB       0x00000010  /* 1 = stereo */
 145#define SCTRL_R1FMT       0x00000030  /* format mask */
 146#define SCTRL_SH_R1FMT    4
 147#define SCTRL_P2SEB       0x00000008  /* 1 = 16bit */
 148#define SCTRL_P2SMB       0x00000004  /* 1 = stereo */
 149#define SCTRL_P2FMT       0x0000000c  /* format mask */
 150#define SCTRL_SH_P2FMT    2
 151#define SCTRL_P1SEB       0x00000002  /* 1 = 16bit */
 152#define SCTRL_P1SMB       0x00000001  /* 1 = stereo */
 153#define SCTRL_P1FMT       0x00000003  /* format mask */
 154#define SCTRL_SH_P1FMT    0
 155
 156/* End blatant GPL violation */
 157
 158#define NB_CHANNELS 3
 159#define DAC1_CHANNEL 0
 160#define DAC2_CHANNEL 1
 161#define ADC_CHANNEL 2
 162
 163static void es1370_dac1_callback (void *opaque, int free);
 164static void es1370_dac2_callback (void *opaque, int free);
 165static void es1370_adc_callback (void *opaque, int avail);
 166
 167#ifdef DEBUG_ES1370
 168
 169#define ldebug(...) AUD_log ("es1370", __VA_ARGS__)
 170
 171static void print_ctl (uint32_t val)
 172{
 173    char buf[1024];
 174
 175    buf[0] = '\0';
 176#define a(n) if (val & CTRL_##n) strcat (buf, " "#n)
 177    a (ADC_STOP);
 178    a (XCTL1);
 179    a (OPEN);
 180    a (MSFMTSEL);
 181    a (M_SBB);
 182    a (DAC_SYNC);
 183    a (CCB_INTRM);
 184    a (M_CB);
 185    a (XCTL0);
 186    a (BREQ);
 187    a (DAC1_EN);
 188    a (DAC2_EN);
 189    a (ADC_EN);
 190    a (UART_EN);
 191    a (JYSTK_EN);
 192    a (CDC_EN);
 193    a (SERR_DIS);
 194#undef a
 195    AUD_log ("es1370", "ctl - PCLKDIV %d(DAC2 freq %d), freq %d,%s\n",
 196             (val & CTRL_PCLKDIV) >> CTRL_SH_PCLKDIV,
 197             DAC2_DIVTOSR ((val & CTRL_PCLKDIV) >> CTRL_SH_PCLKDIV),
 198             dac1_samplerate[(val & CTRL_WTSRSEL) >> CTRL_SH_WTSRSEL],
 199             buf);
 200}
 201
 202static void print_sctl (uint32_t val)
 203{
 204    static const char *fmt_names[] = {"8M", "8S", "16M", "16S"};
 205    char buf[1024];
 206
 207    buf[0] = '\0';
 208
 209#define a(n) if (val & SCTRL_##n) strcat (buf, " "#n)
 210#define b(n) if (!(val & SCTRL_##n)) strcat (buf, " "#n)
 211    b (R1LOOPSEL);
 212    b (P2LOOPSEL);
 213    b (P1LOOPSEL);
 214    a (P2PAUSE);
 215    a (P1PAUSE);
 216    a (R1INTEN);
 217    a (P2INTEN);
 218    a (P1INTEN);
 219    a (P1SCTRLD);
 220    a (P2DACSEN);
 221    if (buf[0]) {
 222        strcat (buf, "\n        ");
 223    }
 224    else {
 225        buf[0] = ' ';
 226        buf[1] = '\0';
 227    }
 228#undef b
 229#undef a
 230    AUD_log ("es1370",
 231             "%s"
 232             "p2_end_inc %d, p2_st_inc %d, r1_fmt %s, p2_fmt %s, p1_fmt %s\n",
 233             buf,
 234             (val & SCTRL_P2ENDINC) >> SCTRL_SH_P2ENDINC,
 235             (val & SCTRL_P2STINC) >> SCTRL_SH_P2STINC,
 236             fmt_names [(val >> SCTRL_SH_R1FMT) & 3],
 237             fmt_names [(val >> SCTRL_SH_P2FMT) & 3],
 238             fmt_names [(val >> SCTRL_SH_P1FMT) & 3]
 239        );
 240}
 241#else
 242#define ldebug(...)
 243#define print_ctl(...)
 244#define print_sctl(...)
 245#endif
 246
 247#ifdef VERBOSE_ES1370
 248#define dolog(...) AUD_log ("es1370", __VA_ARGS__)
 249#else
 250#define dolog(...)
 251#endif
 252
 253#ifndef SILENT_ES1370
 254#define lwarn(...) AUD_log ("es1370: warning", __VA_ARGS__)
 255#else
 256#define lwarn(...)
 257#endif
 258
 259#define TYPE_ES1370 "ES1370"
 260OBJECT_DECLARE_SIMPLE_TYPE(ES1370State, ES1370)
 261
 262struct chan {
 263    uint32_t shift;
 264    uint32_t leftover;
 265    uint32_t scount;
 266    uint32_t frame_addr;
 267    uint32_t frame_cnt;
 268};
 269
 270struct ES1370State {
 271    PCIDevice dev;
 272    QEMUSoundCard card;
 273    MemoryRegion io;
 274    struct chan chan[NB_CHANNELS];
 275    SWVoiceOut *dac_voice[2];
 276    SWVoiceIn *adc_voice;
 277
 278    uint32_t ctl;
 279    uint32_t status;
 280    uint32_t mempage;
 281    uint32_t codec;
 282    uint32_t sctl;
 283};
 284
 285struct chan_bits {
 286    uint32_t ctl_en;
 287    uint32_t stat_int;
 288    uint32_t sctl_pause;
 289    uint32_t sctl_inten;
 290    uint32_t sctl_fmt;
 291    uint32_t sctl_sh_fmt;
 292    uint32_t sctl_loopsel;
 293    void (*calc_freq) (ES1370State *s, uint32_t ctl,
 294                       uint32_t *old_freq, uint32_t *new_freq);
 295};
 296
 297static void es1370_dac1_calc_freq (ES1370State *s, uint32_t ctl,
 298                                   uint32_t *old_freq, uint32_t *new_freq);
 299static void es1370_dac2_and_adc_calc_freq (ES1370State *s, uint32_t ctl,
 300                                           uint32_t *old_freq,
 301                                           uint32_t *new_freq);
 302
 303static const struct chan_bits es1370_chan_bits[] = {
 304    {CTRL_DAC1_EN, STAT_DAC1, SCTRL_P1PAUSE, SCTRL_P1INTEN,
 305     SCTRL_P1FMT, SCTRL_SH_P1FMT, SCTRL_P1LOOPSEL,
 306     es1370_dac1_calc_freq},
 307
 308    {CTRL_DAC2_EN, STAT_DAC2, SCTRL_P2PAUSE, SCTRL_P2INTEN,
 309     SCTRL_P2FMT, SCTRL_SH_P2FMT, SCTRL_P2LOOPSEL,
 310     es1370_dac2_and_adc_calc_freq},
 311
 312    {CTRL_ADC_EN, STAT_ADC, 0, SCTRL_R1INTEN,
 313     SCTRL_R1FMT, SCTRL_SH_R1FMT, SCTRL_R1LOOPSEL,
 314     es1370_dac2_and_adc_calc_freq}
 315};
 316
 317static void es1370_update_status (ES1370State *s, uint32_t new_status)
 318{
 319    uint32_t level = new_status & (STAT_DAC1 | STAT_DAC2 | STAT_ADC);
 320
 321    if (level) {
 322        s->status = new_status | STAT_INTR;
 323    }
 324    else {
 325        s->status = new_status & ~STAT_INTR;
 326    }
 327    pci_set_irq(&s->dev, !!level);
 328}
 329
 330static void es1370_reset (ES1370State *s)
 331{
 332    size_t i;
 333
 334    s->ctl = 1;
 335    s->status = 0x60;
 336    s->mempage = 0;
 337    s->codec = 0;
 338    s->sctl = 0;
 339
 340    for (i = 0; i < NB_CHANNELS; ++i) {
 341        struct chan *d = &s->chan[i];
 342        d->scount = 0;
 343        d->leftover = 0;
 344        if (i == ADC_CHANNEL) {
 345            AUD_close_in (&s->card, s->adc_voice);
 346            s->adc_voice = NULL;
 347        }
 348        else {
 349            AUD_close_out (&s->card, s->dac_voice[i]);
 350            s->dac_voice[i] = NULL;
 351        }
 352    }
 353    pci_irq_deassert(&s->dev);
 354}
 355
 356static void es1370_maybe_lower_irq (ES1370State *s, uint32_t sctl)
 357{
 358    uint32_t new_status = s->status;
 359
 360    if (!(sctl & SCTRL_P1INTEN) && (s->sctl & SCTRL_P1INTEN)) {
 361        new_status &= ~STAT_DAC1;
 362    }
 363
 364    if (!(sctl & SCTRL_P2INTEN) && (s->sctl & SCTRL_P2INTEN)) {
 365        new_status &= ~STAT_DAC2;
 366    }
 367
 368    if (!(sctl & SCTRL_R1INTEN) && (s->sctl & SCTRL_R1INTEN)) {
 369        new_status &= ~STAT_ADC;
 370    }
 371
 372    if (new_status != s->status) {
 373        es1370_update_status (s, new_status);
 374    }
 375}
 376
 377static void es1370_dac1_calc_freq (ES1370State *s, uint32_t ctl,
 378                                   uint32_t *old_freq, uint32_t *new_freq)
 379
 380{
 381    *old_freq = dac1_samplerate[(s->ctl & CTRL_WTSRSEL) >> CTRL_SH_WTSRSEL];
 382    *new_freq = dac1_samplerate[(ctl & CTRL_WTSRSEL) >> CTRL_SH_WTSRSEL];
 383}
 384
 385static void es1370_dac2_and_adc_calc_freq (ES1370State *s, uint32_t ctl,
 386                                           uint32_t *old_freq,
 387                                           uint32_t *new_freq)
 388
 389{
 390    uint32_t old_pclkdiv, new_pclkdiv;
 391
 392    new_pclkdiv = (ctl & CTRL_PCLKDIV) >> CTRL_SH_PCLKDIV;
 393    old_pclkdiv = (s->ctl & CTRL_PCLKDIV) >> CTRL_SH_PCLKDIV;
 394    *new_freq = DAC2_DIVTOSR (new_pclkdiv);
 395    *old_freq = DAC2_DIVTOSR (old_pclkdiv);
 396}
 397
 398static void es1370_update_voices (ES1370State *s, uint32_t ctl, uint32_t sctl)
 399{
 400    size_t i;
 401    uint32_t old_freq, new_freq, old_fmt, new_fmt;
 402
 403    for (i = 0; i < NB_CHANNELS; ++i) {
 404        struct chan *d = &s->chan[i];
 405        const struct chan_bits *b = &es1370_chan_bits[i];
 406
 407        new_fmt = (sctl & b->sctl_fmt) >> b->sctl_sh_fmt;
 408        old_fmt = (s->sctl & b->sctl_fmt) >> b->sctl_sh_fmt;
 409
 410        b->calc_freq (s, ctl, &old_freq, &new_freq);
 411
 412        if ((old_fmt != new_fmt) || (old_freq != new_freq)) {
 413            d->shift = (new_fmt & 1) + (new_fmt >> 1);
 414            ldebug ("channel %zu, freq = %d, nchannels %d, fmt %d, shift %d\n",
 415                    i,
 416                    new_freq,
 417                    1 << (new_fmt & 1),
 418                    (new_fmt & 2) ? AUDIO_FORMAT_S16 : AUDIO_FORMAT_U8,
 419                    d->shift);
 420            if (new_freq) {
 421                struct audsettings as;
 422
 423                as.freq = new_freq;
 424                as.nchannels = 1 << (new_fmt & 1);
 425                as.fmt = (new_fmt & 2) ? AUDIO_FORMAT_S16 : AUDIO_FORMAT_U8;
 426                as.endianness = 0;
 427
 428                if (i == ADC_CHANNEL) {
 429                    s->adc_voice =
 430                        AUD_open_in (
 431                            &s->card,
 432                            s->adc_voice,
 433                            "es1370.adc",
 434                            s,
 435                            es1370_adc_callback,
 436                            &as
 437                            );
 438                }
 439                else {
 440                    s->dac_voice[i] =
 441                        AUD_open_out (
 442                            &s->card,
 443                            s->dac_voice[i],
 444                            i ? "es1370.dac2" : "es1370.dac1",
 445                            s,
 446                            i ? es1370_dac2_callback : es1370_dac1_callback,
 447                            &as
 448                            );
 449                }
 450            }
 451        }
 452
 453        if (((ctl ^ s->ctl) & b->ctl_en)
 454            || ((sctl ^ s->sctl) & b->sctl_pause)) {
 455            int on = (ctl & b->ctl_en) && !(sctl & b->sctl_pause);
 456
 457            if (i == ADC_CHANNEL) {
 458                AUD_set_active_in (s->adc_voice, on);
 459            }
 460            else {
 461                AUD_set_active_out (s->dac_voice[i], on);
 462            }
 463        }
 464    }
 465
 466    s->ctl = ctl;
 467    s->sctl = sctl;
 468}
 469
 470static inline uint32_t es1370_fixup (ES1370State *s, uint32_t addr)
 471{
 472    addr &= 0xff;
 473    if (addr >= 0x30 && addr <= 0x3f)
 474        addr |= s->mempage << 8;
 475    return addr;
 476}
 477
 478static void es1370_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
 479{
 480    ES1370State *s = opaque;
 481    struct chan *d = &s->chan[0];
 482
 483    addr = es1370_fixup (s, addr);
 484
 485    switch (addr) {
 486    case ES1370_REG_CONTROL:
 487        es1370_update_voices (s, val, s->sctl);
 488        print_ctl (val);
 489        break;
 490
 491    case ES1370_REG_MEMPAGE:
 492        s->mempage = val & 0xf;
 493        break;
 494
 495    case ES1370_REG_SERIAL_CONTROL:
 496        es1370_maybe_lower_irq (s, val);
 497        es1370_update_voices (s, s->ctl, val);
 498        print_sctl (val);
 499        break;
 500
 501    case ES1370_REG_DAC1_SCOUNT:
 502    case ES1370_REG_DAC2_SCOUNT:
 503    case ES1370_REG_ADC_SCOUNT:
 504        d += (addr - ES1370_REG_DAC1_SCOUNT) >> 2;
 505        d->scount = (val & 0xffff) | (d->scount & ~0xffff);
 506        ldebug ("chan %td CURR_SAMP_CT %d, SAMP_CT %d\n",
 507                d - &s->chan[0], val >> 16, (val & 0xffff));
 508        break;
 509
 510    case ES1370_REG_ADC_FRAMEADR:
 511        d += 2;
 512        goto frameadr;
 513    case ES1370_REG_DAC1_FRAMEADR:
 514    case ES1370_REG_DAC2_FRAMEADR:
 515        d += (addr - ES1370_REG_DAC1_FRAMEADR) >> 3;
 516    frameadr:
 517        d->frame_addr = val;
 518        ldebug ("chan %td frame address %#x\n", d - &s->chan[0], val);
 519        break;
 520
 521    case ES1370_REG_PHANTOM_FRAMECNT:
 522        lwarn ("writing to phantom frame count %#x\n", val);
 523        break;
 524    case ES1370_REG_PHANTOM_FRAMEADR:
 525        lwarn ("writing to phantom frame address %#x\n", val);
 526        break;
 527
 528    case ES1370_REG_ADC_FRAMECNT:
 529        d += 2;
 530        goto framecnt;
 531    case ES1370_REG_DAC1_FRAMECNT:
 532    case ES1370_REG_DAC2_FRAMECNT:
 533        d += (addr - ES1370_REG_DAC1_FRAMECNT) >> 3;
 534    framecnt:
 535        d->frame_cnt = val;
 536        d->leftover = 0;
 537        ldebug ("chan %td frame count %d, buffer size %d\n",
 538                d - &s->chan[0], val >> 16, val & 0xffff);
 539        break;
 540
 541    default:
 542        lwarn ("writel %#x <- %#x\n", addr, val);
 543        break;
 544    }
 545}
 546
 547static uint64_t es1370_read(void *opaque, hwaddr addr, unsigned size)
 548{
 549    ES1370State *s = opaque;
 550    uint32_t val;
 551    struct chan *d = &s->chan[0];
 552
 553    addr = es1370_fixup (s, addr);
 554
 555    switch (addr) {
 556    case ES1370_REG_CONTROL:
 557        val = s->ctl;
 558        break;
 559    case ES1370_REG_STATUS:
 560        val = s->status;
 561        break;
 562    case ES1370_REG_MEMPAGE:
 563        val = s->mempage;
 564        break;
 565    case ES1370_REG_CODEC:
 566        val = s->codec;
 567        break;
 568    case ES1370_REG_SERIAL_CONTROL:
 569        val = s->sctl;
 570        break;
 571
 572    case ES1370_REG_DAC1_SCOUNT:
 573    case ES1370_REG_DAC2_SCOUNT:
 574    case ES1370_REG_ADC_SCOUNT:
 575        d += (addr - ES1370_REG_DAC1_SCOUNT) >> 2;
 576        val = d->scount;
 577#ifdef DEBUG_ES1370
 578        {
 579            uint32_t curr_count = d->scount >> 16;
 580            uint32_t count = d->scount & 0xffff;
 581
 582            curr_count <<= d->shift;
 583            count <<= d->shift;
 584            dolog ("read scount curr %d, total %d\n", curr_count, count);
 585        }
 586#endif
 587        break;
 588
 589    case ES1370_REG_ADC_FRAMECNT:
 590        d += 2;
 591        goto framecnt;
 592    case ES1370_REG_DAC1_FRAMECNT:
 593    case ES1370_REG_DAC2_FRAMECNT:
 594        d += (addr - ES1370_REG_DAC1_FRAMECNT) >> 3;
 595    framecnt:
 596        val = d->frame_cnt;
 597#ifdef DEBUG_ES1370
 598        {
 599            uint32_t size = ((d->frame_cnt & 0xffff) + 1) << 2;
 600            uint32_t curr = ((d->frame_cnt >> 16) + 1) << 2;
 601            if (curr > size) {
 602                dolog ("read framecnt curr %d, size %d %d\n", curr, size,
 603                       curr > size);
 604            }
 605        }
 606#endif
 607        break;
 608
 609    case ES1370_REG_ADC_FRAMEADR:
 610        d += 2;
 611        goto frameadr;
 612    case ES1370_REG_DAC1_FRAMEADR:
 613    case ES1370_REG_DAC2_FRAMEADR:
 614        d += (addr - ES1370_REG_DAC1_FRAMEADR) >> 3;
 615    frameadr:
 616        val = d->frame_addr;
 617        break;
 618
 619    case ES1370_REG_PHANTOM_FRAMECNT:
 620        val = ~0U;
 621        lwarn ("reading from phantom frame count\n");
 622        break;
 623    case ES1370_REG_PHANTOM_FRAMEADR:
 624        val = ~0U;
 625        lwarn ("reading from phantom frame address\n");
 626        break;
 627
 628    default:
 629        val = ~0U;
 630        lwarn ("readl %#x -> %#x\n", addr, val);
 631        break;
 632    }
 633    return val;
 634}
 635
 636static void es1370_transfer_audio (ES1370State *s, struct chan *d, int loop_sel,
 637                                   int max, int *irq)
 638{
 639    uint8_t tmpbuf[4096];
 640    uint32_t addr = d->frame_addr;
 641    int sc = d->scount & 0xffff;
 642    int csc = d->scount >> 16;
 643    int csc_bytes = (csc + 1) << d->shift;
 644    int cnt = d->frame_cnt >> 16;
 645    int size = d->frame_cnt & 0xffff;
 646    if (size < cnt) {
 647        return;
 648    }
 649    int left = ((size - cnt + 1) << 2) + d->leftover;
 650    int transferred = 0;
 651    int temp = MIN (max, MIN (left, csc_bytes));
 652    int index = d - &s->chan[0];
 653
 654    addr += (cnt << 2) + d->leftover;
 655
 656    if (index == ADC_CHANNEL) {
 657        while (temp > 0) {
 658            int acquired, to_copy;
 659
 660            to_copy = MIN ((size_t) temp, sizeof (tmpbuf));
 661            acquired = AUD_read (s->adc_voice, tmpbuf, to_copy);
 662            if (!acquired)
 663                break;
 664
 665            pci_dma_write (&s->dev, addr, tmpbuf, acquired);
 666
 667            temp -= acquired;
 668            addr += acquired;
 669            transferred += acquired;
 670        }
 671    }
 672    else {
 673        SWVoiceOut *voice = s->dac_voice[index];
 674
 675        while (temp > 0) {
 676            int copied, to_copy;
 677
 678            to_copy = MIN ((size_t) temp, sizeof (tmpbuf));
 679            pci_dma_read (&s->dev, addr, tmpbuf, to_copy);
 680            copied = AUD_write (voice, tmpbuf, to_copy);
 681            if (!copied)
 682                break;
 683            temp -= copied;
 684            addr += copied;
 685            transferred += copied;
 686        }
 687    }
 688
 689    if (csc_bytes == transferred) {
 690        *irq = 1;
 691        d->scount = sc | (sc << 16);
 692        ldebug ("sc = %d, rate = %f\n",
 693                (sc + 1) << d->shift,
 694                (sc + 1) / (double) 44100);
 695    }
 696    else {
 697        *irq = 0;
 698        d->scount = sc | (((csc_bytes - transferred - 1) >> d->shift) << 16);
 699    }
 700
 701    cnt += (transferred + d->leftover) >> 2;
 702
 703    if (s->sctl & loop_sel) {
 704        /* Bah, how stupid is that having a 0 represent true value?
 705           i just spent few hours on this shit */
 706        AUD_log ("es1370: warning", "non looping mode\n");
 707    }
 708    else {
 709        d->frame_cnt = size;
 710
 711        if ((uint32_t) cnt <= d->frame_cnt)
 712            d->frame_cnt |= cnt << 16;
 713    }
 714
 715    d->leftover = (transferred + d->leftover) & 3;
 716}
 717
 718static void es1370_run_channel (ES1370State *s, size_t chan, int free_or_avail)
 719{
 720    uint32_t new_status = s->status;
 721    int max_bytes, irq;
 722    struct chan *d = &s->chan[chan];
 723    const struct chan_bits *b = &es1370_chan_bits[chan];
 724
 725    if (!(s->ctl & b->ctl_en) || (s->sctl & b->sctl_pause)) {
 726        return;
 727    }
 728
 729    max_bytes = free_or_avail;
 730    max_bytes &= ~((1 << d->shift) - 1);
 731    if (!max_bytes) {
 732        return;
 733    }
 734
 735    es1370_transfer_audio (s, d, b->sctl_loopsel, max_bytes, &irq);
 736
 737    if (irq) {
 738        if (s->sctl & b->sctl_inten) {
 739            new_status |= b->stat_int;
 740        }
 741    }
 742
 743    if (new_status != s->status) {
 744        es1370_update_status (s, new_status);
 745    }
 746}
 747
 748static void es1370_dac1_callback (void *opaque, int free)
 749{
 750    ES1370State *s = opaque;
 751
 752    es1370_run_channel (s, DAC1_CHANNEL, free);
 753}
 754
 755static void es1370_dac2_callback (void *opaque, int free)
 756{
 757    ES1370State *s = opaque;
 758
 759    es1370_run_channel (s, DAC2_CHANNEL, free);
 760}
 761
 762static void es1370_adc_callback (void *opaque, int avail)
 763{
 764    ES1370State *s = opaque;
 765
 766    es1370_run_channel (s, ADC_CHANNEL, avail);
 767}
 768
 769static const MemoryRegionOps es1370_io_ops = {
 770    .read = es1370_read,
 771    .write = es1370_write,
 772    .valid = {
 773        .min_access_size = 1,
 774        .max_access_size = 4,
 775    },
 776    .impl = {
 777        .min_access_size = 4,
 778        .max_access_size = 4,
 779    },
 780    .endianness = DEVICE_LITTLE_ENDIAN,
 781};
 782
 783static const VMStateDescription vmstate_es1370_channel = {
 784    .name = "es1370_channel",
 785    .version_id = 2,
 786    .minimum_version_id = 2,
 787    .fields = (VMStateField[]) {
 788        VMSTATE_UINT32 (shift, struct chan),
 789        VMSTATE_UINT32 (leftover, struct chan),
 790        VMSTATE_UINT32 (scount, struct chan),
 791        VMSTATE_UINT32 (frame_addr, struct chan),
 792        VMSTATE_UINT32 (frame_cnt, struct chan),
 793        VMSTATE_END_OF_LIST ()
 794    }
 795};
 796
 797static int es1370_post_load (void *opaque, int version_id)
 798{
 799    uint32_t ctl, sctl;
 800    ES1370State *s = opaque;
 801    size_t i;
 802
 803    for (i = 0; i < NB_CHANNELS; ++i) {
 804        if (i == ADC_CHANNEL) {
 805            if (s->adc_voice) {
 806                AUD_close_in (&s->card, s->adc_voice);
 807                s->adc_voice = NULL;
 808            }
 809        }
 810        else {
 811            if (s->dac_voice[i]) {
 812                AUD_close_out (&s->card, s->dac_voice[i]);
 813                s->dac_voice[i] = NULL;
 814            }
 815        }
 816    }
 817
 818    ctl = s->ctl;
 819    sctl = s->sctl;
 820    s->ctl = 0;
 821    s->sctl = 0;
 822    es1370_update_voices (s, ctl, sctl);
 823    return 0;
 824}
 825
 826static const VMStateDescription vmstate_es1370 = {
 827    .name = "es1370",
 828    .version_id = 2,
 829    .minimum_version_id = 2,
 830    .post_load = es1370_post_load,
 831    .fields = (VMStateField[]) {
 832        VMSTATE_PCI_DEVICE (dev, ES1370State),
 833        VMSTATE_STRUCT_ARRAY (chan, ES1370State, NB_CHANNELS, 2,
 834                              vmstate_es1370_channel, struct chan),
 835        VMSTATE_UINT32 (ctl, ES1370State),
 836        VMSTATE_UINT32 (status, ES1370State),
 837        VMSTATE_UINT32 (mempage, ES1370State),
 838        VMSTATE_UINT32 (codec, ES1370State),
 839        VMSTATE_UINT32 (sctl, ES1370State),
 840        VMSTATE_END_OF_LIST ()
 841    }
 842};
 843
 844static void es1370_on_reset(DeviceState *dev)
 845{
 846    ES1370State *s = ES1370(dev);
 847
 848    es1370_reset (s);
 849}
 850
 851static void es1370_realize(PCIDevice *dev, Error **errp)
 852{
 853    ES1370State *s = ES1370(dev);
 854    uint8_t *c = s->dev.config;
 855
 856    c[PCI_STATUS + 1] = PCI_STATUS_DEVSEL_SLOW >> 8;
 857
 858#if 0
 859    c[PCI_CAPABILITY_LIST] = 0xdc;
 860    c[PCI_INTERRUPT_LINE] = 10;
 861    c[0xdc] = 0x00;
 862#endif
 863
 864    c[PCI_INTERRUPT_PIN] = 1;
 865    c[PCI_MIN_GNT] = 0x0c;
 866    c[PCI_MAX_LAT] = 0x80;
 867
 868    memory_region_init_io (&s->io, OBJECT(s), &es1370_io_ops, s, "es1370", 256);
 869    pci_register_bar (&s->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
 870
 871    AUD_register_card ("es1370", &s->card);
 872    es1370_reset (s);
 873}
 874
 875static void es1370_exit(PCIDevice *dev)
 876{
 877    ES1370State *s = ES1370(dev);
 878    int i;
 879
 880    for (i = 0; i < 2; ++i) {
 881        AUD_close_out(&s->card, s->dac_voice[i]);
 882    }
 883
 884    AUD_close_in(&s->card, s->adc_voice);
 885    AUD_remove_card(&s->card);
 886}
 887
 888static Property es1370_properties[] = {
 889    DEFINE_AUDIO_PROPERTIES(ES1370State, card),
 890    DEFINE_PROP_END_OF_LIST(),
 891};
 892
 893static void es1370_class_init (ObjectClass *klass, void *data)
 894{
 895    DeviceClass *dc = DEVICE_CLASS (klass);
 896    PCIDeviceClass *k = PCI_DEVICE_CLASS (klass);
 897
 898    k->realize = es1370_realize;
 899    k->exit = es1370_exit;
 900    k->vendor_id = PCI_VENDOR_ID_ENSONIQ;
 901    k->device_id = PCI_DEVICE_ID_ENSONIQ_ES1370;
 902    k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
 903    k->subsystem_vendor_id = 0x4942;
 904    k->subsystem_id = 0x4c4c;
 905    set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
 906    dc->desc = "ENSONIQ AudioPCI ES1370";
 907    dc->vmsd = &vmstate_es1370;
 908    dc->reset = es1370_on_reset;
 909    device_class_set_props(dc, es1370_properties);
 910}
 911
 912static const TypeInfo es1370_info = {
 913    .name          = TYPE_ES1370,
 914    .parent        = TYPE_PCI_DEVICE,
 915    .instance_size = sizeof (ES1370State),
 916    .class_init    = es1370_class_init,
 917    .interfaces = (InterfaceInfo[]) {
 918        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 919        { },
 920    },
 921};
 922
 923static void es1370_register_types (void)
 924{
 925    type_register_static (&es1370_info);
 926    deprecated_register_soundhw("es1370", "ENSONIQ AudioPCI ES1370",
 927                                0, TYPE_ES1370);
 928}
 929
 930type_init (es1370_register_types)
 931