libpcsxcore/cdrom.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team              *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  18  ***************************************************************************/
  19
  20 /*
  21 * Handles all CD-ROM registers and functions.
  22 */
  23
  24 #include "cdrom.h"
  25 #include "ppf.h"
  26 #include "psxdma.h"
  27 #include "arm_features.h"
  28
  29 /* logging */
  30 #if 0
  31 #define CDR_LOG SysPrintf
  32 #else
  33 #define CDR_LOG(...)
  34 #endif
  35 #if 0
  36 #define CDR_LOG_I SysPrintf
  37 #else
  38 #define CDR_LOG_I(...)
  39 #endif
  40 #if 0
  41 #define CDR_LOG_IO SysPrintf
  42 #else
  43 #define CDR_LOG_IO(...)
  44 #endif
  45 //#define CDR_LOG_CMD_IRQ
  46
  47 cdrStruct cdr;
  48 static unsigned char *pTransfer;
  49
  50 /* CD-ROM magic numbers */
  51 #define CdlSync        0
  52 #define CdlNop         1
  53 #define CdlSetloc      2
  54 #define CdlPlay        3
  55 #define CdlForward     4
  56 #define CdlBackward    5
  57 #define CdlReadN       6
  58 #define CdlStandby     7
  59 #define CdlStop        8
  60 #define CdlPause       9
  61 #define CdlInit        10
  62 #define CdlMute        11
  63 #define CdlDemute      12
  64 #define CdlSetfilter   13
  65 #define CdlSetmode     14
  66 #define CdlGetmode     15
  67 #define CdlGetlocL     16
  68 #define CdlGetlocP     17
  69 #define CdlReadT       18
  70 #define CdlGetTN       19
  71 #define CdlGetTD       20
  72 #define CdlSeekL       21
  73 #define CdlSeekP       22
  74 #define CdlSetclock    23
  75 #define CdlGetclock    24
  76 #define CdlTest        25
  77 #define CdlID          26
  78 #define CdlReadS       27
  79 #define CdlReset       28
  80 #define CdlGetQ        29
  81 #define CdlReadToc     30
  82
  83 char *CmdName[0x100]= {
  84     "CdlSync",     "CdlNop",       "CdlSetloc",  "CdlPlay",
  85     "CdlForward",  "CdlBackward",  "CdlReadN",   "CdlStandby",
  86     "CdlStop",     "CdlPause",     "CdlInit",    "CdlMute",
  87     "CdlDemute",   "CdlSetfilter", "CdlSetmode", "CdlGetmode",
  88     "CdlGetlocL",  "CdlGetlocP",   "CdlReadT",   "CdlGetTN",
  89     "CdlGetTD",    "CdlSeekL",     "CdlSeekP",   "CdlSetclock",
  90     "CdlGetclock", "CdlTest",      "CdlID",      "CdlReadS",
  91     "CdlReset",    NULL,           "CDlReadToc", NULL
  92 };
  93
  94 unsigned char Test04[] = { 0 };
  95 unsigned char Test05[] = { 0 };
  96 unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
  97 unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
  98 unsigned char Test23[] = { 0x43, 0x58, 0x44, 0x32, 0x39 ,0x34, 0x30, 0x51 };
  99
 100 // cdr.Stat:
 101 #define NoIntr          0
 102 #define DataReady       1
 103 #define Complete        2
 104 #define Acknowledge     3
 105 #define DataEnd         4
 106 #define DiskError       5
 107
 108 /* Modes flags */
 109 #define MODE_SPEED       (1<<7) // 0x80
 110 #define MODE_STRSND      (1<<6) // 0x40 ADPCM on/off
 111 #define MODE_SIZE_2340   (1<<5) // 0x20
 112 #define MODE_SIZE_2328   (1<<4) // 0x10
 113 #define MODE_SIZE_2048   (0<<4) // 0x00
 114 #define MODE_SF          (1<<3) // 0x08 channel on/off
 115 #define MODE_REPORT      (1<<2) // 0x04
 116 #define MODE_AUTOPAUSE   (1<<1) // 0x02
 117 #define MODE_CDDA        (1<<0) // 0x01
 118
 119 /* Status flags */
 120 #define STATUS_PLAY      (1<<7) // 0x80
 121 #define STATUS_SEEK      (1<<6) // 0x40
 122 #define STATUS_READ      (1<<5) // 0x20
 123 #define STATUS_SHELLOPEN (1<<4) // 0x10
 124 #define STATUS_UNKNOWN3  (1<<3) // 0x08
 125 #define STATUS_UNKNOWN2  (1<<2) // 0x04
 126 #define STATUS_ROTATING  (1<<1) // 0x02
 127 #define STATUS_ERROR     (1<<0) // 0x01
 128
 129 /* Errors */
 130 #define ERROR_NOTREADY   (1<<7) // 0x80
 131 #define ERROR_INVALIDCMD (1<<6) // 0x40
 132 #define ERROR_INVALIDARG (1<<5) // 0x20
 133
 134 // 1x = 75 sectors per second
 135 // PSXCLK = 1 sec in the ps
 136 // so (PSXCLK / 75) = cdr read time (linuzappz)
 137 #define cdReadTime (PSXCLK / 75)
 138
 139 enum drive_state {
 140         DRIVESTATE_STANDBY = 0,
 141         DRIVESTATE_LID_OPEN,
 142         DRIVESTATE_RESCAN_CD,
 143         DRIVESTATE_PREPARE_CD,
 144         DRIVESTATE_STOPPED,
 145 };
 146
 147 // for cdr.Seeked
 148 enum seeked_state {
 149         SEEK_PENDING = 0,
 150         SEEK_DONE = 1,
 151 };
 152
 153 static struct CdrStat stat;
 154
 155 static unsigned int msf2sec(const u8 *msf) {
 156         return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
 157 }
 158
 159 // for that weird psemu API..
 160 static unsigned int fsm2sec(const u8 *msf) {
 161         return ((msf[2] * 60 + msf[1]) * 75) + msf[0];
 162 }
 163
 164 static void sec2msf(unsigned int s, u8 *msf) {
 165         msf[0] = s / 75 / 60;
 166         s = s - msf[0] * 75 * 60;
 167         msf[1] = s / 75;
 168         s = s - msf[1] * 75;
 169         msf[2] = s;
 170 }
 171
 172 // cdrInterrupt
 173 #define CDR_INT(eCycle) { \
 174         psxRegs.interrupt |= (1 << PSXINT_CDR); \
 175         psxRegs.intCycle[PSXINT_CDR].cycle = eCycle; \
 176         psxRegs.intCycle[PSXINT_CDR].sCycle = psxRegs.cycle; \
 177         new_dyna_set_event(PSXINT_CDR, eCycle); \
 178 }
 179
 180 // cdrReadInterrupt
 181 #define CDREAD_INT(eCycle) { \
 182         psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
 183         psxRegs.intCycle[PSXINT_CDREAD].cycle = eCycle; \
 184         psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
 185         new_dyna_set_event(PSXINT_CDREAD, eCycle); \
 186 }
 187
 188 // cdrLidSeekInterrupt
 189 #define CDRLID_INT(eCycle) { \
 190         psxRegs.interrupt |= (1 << PSXINT_CDRLID); \
 191         psxRegs.intCycle[PSXINT_CDRLID].cycle = eCycle; \
 192         psxRegs.intCycle[PSXINT_CDRLID].sCycle = psxRegs.cycle; \
 193         new_dyna_set_event(PSXINT_CDRLID, eCycle); \
 194 }
 195
 196 // cdrPlayInterrupt
 197 #define CDRMISC_INT(eCycle) { \
 198         psxRegs.interrupt |= (1 << PSXINT_CDRPLAY); \
 199         psxRegs.intCycle[PSXINT_CDRPLAY].cycle = eCycle; \
 200         psxRegs.intCycle[PSXINT_CDRPLAY].sCycle = psxRegs.cycle; \
 201         new_dyna_set_event(PSXINT_CDRPLAY, eCycle); \
 202 }
 203
 204 #define StopReading() { \
 205         if (cdr.Reading) { \
 206                 cdr.Reading = 0; \
 207                 psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
 208         } \
 209         cdr.StatP &= ~(STATUS_READ|STATUS_SEEK);\
 210 }
 211
 212 #define StopCdda() { \
 213         if (cdr.Play) { \
 214                 if (!Config.Cdda) CDR_stop(); \
 215                 cdr.StatP &= ~STATUS_PLAY; \
 216                 cdr.Play = FALSE; \
 217                 cdr.FastForward = 0; \
 218                 cdr.FastBackward = 0; \
 219                 /*SPU_registerCallback( SPUirq );*/ \
 220         } \
 221 }
 222
 223 #define SetResultSize(size) { \
 224         cdr.ResultP = 0; \
 225         cdr.ResultC = size; \
 226         cdr.ResultReady = 1; \
 227 }
 228
 229 static void setIrq(void)
 230 {
 231         if (cdr.Stat & cdr.Reg2)
 232                 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
 233 }
 234
 235 // timing used in this function was taken from tests on real hardware
 236 // (yes it's slow, but you probably don't want to modify it)
 237 void cdrLidSeekInterrupt()
 238 {
 239         switch (cdr.DriveState) {
 240         default:
 241         case DRIVESTATE_STANDBY:
 242                 cdr.StatP &= ~STATUS_SEEK;
 243
 244                 if (CDR_getStatus(&stat) == -1)
 245                         return;
 246
 247                 if (stat.Status & STATUS_SHELLOPEN)
 248                 {
 249                         StopCdda();
 250                         cdr.DriveState = DRIVESTATE_LID_OPEN;
 251                         CDRLID_INT(0x800);
 252                 }
 253                 break;
 254
 255         case DRIVESTATE_LID_OPEN:
 256                 if (CDR_getStatus(&stat) == -1)
 257                         stat.Status &= ~STATUS_SHELLOPEN;
 258
 259                 // 02, 12, 10
 260                 if (!(cdr.StatP & STATUS_SHELLOPEN)) {
 261                         StopReading();
 262                         cdr.StatP |= STATUS_SHELLOPEN;
 263
 264                         // could generate error irq here, but real hardware
 265                         // only sometimes does that
 266                         // (not done when lots of commands are sent?)
 267
 268                         CDRLID_INT(cdReadTime * 30);
 269                         break;
 270                 }
 271                 else if (cdr.StatP & STATUS_ROTATING) {
 272                         cdr.StatP &= ~STATUS_ROTATING;
 273                 }
 274                 else if (!(stat.Status & STATUS_SHELLOPEN)) {
 275                         // closed now
 276                         CheckCdrom();
 277
 278                         // cdr.StatP STATUS_SHELLOPEN is "sticky"
 279                         // and is only cleared by CdlNop
 280
 281                         cdr.DriveState = DRIVESTATE_RESCAN_CD;
 282                         CDRLID_INT(cdReadTime * 105);
 283                         break;
 284                 }
 285
 286                 // recheck for close
 287                 CDRLID_INT(cdReadTime * 3);
 288                 break;
 289
 290         case DRIVESTATE_RESCAN_CD:
 291                 cdr.StatP |= STATUS_ROTATING;
 292                 cdr.DriveState = DRIVESTATE_PREPARE_CD;
 293
 294                 // this is very long on real hardware, over 6 seconds
 295                 // make it a bit faster here...
 296                 CDRLID_INT(cdReadTime * 150);
 297                 break;
 298
 299         case DRIVESTATE_PREPARE_CD:
 300                 cdr.StatP |= STATUS_SEEK;
 301
 302                 cdr.DriveState = DRIVESTATE_STANDBY;
 303                 CDRLID_INT(cdReadTime * 26);
 304                 break;
 305         }
 306 }
 307
 308 static void Find_CurTrack(const u8 *time)
 309 {
 310         int current, sect;
 311
 312         current = msf2sec(time);
 313
 314         for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
 315                 CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
 316                 sect = fsm2sec(cdr.ResultTD);
 317                 if (sect - current >= 150)
 318                         break;
 319         }
 320 }
 321
 322 static void generate_subq(const u8 *time)
 323 {
 324         unsigned char start[3], next[3];
 325         unsigned int this_s, start_s, next_s, pregap;
 326         int relative_s;
 327
 328         CDR_getTD(cdr.CurTrack, start);
 329         if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
 330                 pregap = 150;
 331                 CDR_getTD(cdr.CurTrack + 1, next);
 332         }
 333         else {
 334                 // last track - cd size
 335                 pregap = 0;
 336                 next[0] = cdr.SetSectorEnd[2];
 337                 next[1] = cdr.SetSectorEnd[1];
 338                 next[2] = cdr.SetSectorEnd[0];
 339         }
 340
 341         this_s = msf2sec(time);
 342         start_s = fsm2sec(start);
 343         next_s = fsm2sec(next);
 344
 345         cdr.TrackChanged = FALSE;
 346
 347         if (next_s - this_s < pregap) {
 348                 cdr.TrackChanged = TRUE;
 349                 cdr.CurTrack++;
 350                 start_s = next_s;
 351         }
 352
 353         cdr.subq.Index = 1;
 354
 355         relative_s = this_s - start_s;
 356         if (relative_s < 0) {
 357                 cdr.subq.Index = 0;
 358                 relative_s = -relative_s;
 359         }
 360         sec2msf(relative_s, cdr.subq.Relative);
 361
 362         cdr.subq.Track = itob(cdr.CurTrack);
 363         cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
 364         cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
 365         cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
 366         cdr.subq.Absolute[0] = itob(time[0]);
 367         cdr.subq.Absolute[1] = itob(time[1]);
 368         cdr.subq.Absolute[2] = itob(time[2]);
 369 }
 370
 371 static void ReadTrack(const u8 *time) {
 372         unsigned char tmp[3];
 373         struct SubQ *subq;
 374         u16 crc;
 375
 376         tmp[0] = itob(time[0]);
 377         tmp[1] = itob(time[1]);
 378         tmp[2] = itob(time[2]);
 379
 380         if (memcmp(cdr.Prev, tmp, 3) == 0)
 381                 return;
 382
 383         CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
 384
 385         cdr.RErr = CDR_readTrack(tmp);
 386         memcpy(cdr.Prev, tmp, 3);
 387
 388         if (CheckSBI(time))
 389                 return;
 390
 391         subq = (struct SubQ *)CDR_getBufferSub();
 392         if (subq != NULL && cdr.CurTrack == 1) {
 393                 crc = calcCrc((u8 *)subq + 12, 10);
 394                 if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
 395                         cdr.subq.Track = subq->TrackNumber;
 396                         cdr.subq.Index = subq->IndexNumber;
 397                         memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
 398                         memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
 399                 }
 400                 else {
 401                         CDR_LOG_I("subq bad crc @%02x:%02x:%02x\n",
 402                                 tmp[0], tmp[1], tmp[2]);
 403                 }
 404         }
 405         else {
 406                 generate_subq(time);
 407         }
 408
 409         CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
 410                 cdr.subq.Track, cdr.subq.Index,
 411                 cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
 412                 cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
 413 }
 414
 415 static void AddIrqQueue(unsigned short irq, unsigned long ecycle) {
 416         if (cdr.Irq != 0) {
 417                 if (irq == cdr.Irq || irq + 0x100 == cdr.Irq) {
 418                         cdr.IrqRepeated = 1;
 419                         CDR_INT(ecycle);
 420                         return;
 421                 }
 422
 423                 CDR_LOG_I("cdr: override cmd %02x -> %02x\n", cdr.Irq, irq);
 424         }
 425
 426         cdr.Irq = irq;
 427         cdr.eCycle = ecycle;
 428
 429         CDR_INT(ecycle);
 430 }
 431
 432 static void cdrPlayInterrupt_Autopause()
 433 {
 434         if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
 435                 CDR_LOG( "CDDA STOP\n" );
 436
 437                 // Magic the Gathering
 438                 // - looping territory cdda
 439
 440                 // ...?
 441                 //cdr.ResultReady = 1;
 442                 //cdr.Stat = DataReady;
 443                 cdr.Stat = DataEnd;
 444                 setIrq();
 445
 446                 StopCdda();
 447         }
 448         else if (cdr.Mode & MODE_REPORT) {
 449
 450                 cdr.Result[0] = cdr.StatP;
 451                 cdr.Result[1] = cdr.subq.Track;
 452                 cdr.Result[2] = cdr.subq.Index;
 453
 454                 if (cdr.subq.Absolute[2] & 0x10) {
 455                         cdr.Result[3] = cdr.subq.Relative[0];
 456                         cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
 457                         cdr.Result[5] = cdr.subq.Relative[2];
 458                 }
 459                 else {
 460                         cdr.Result[3] = cdr.subq.Absolute[0];
 461                         cdr.Result[4] = cdr.subq.Absolute[1];
 462                         cdr.Result[5] = cdr.subq.Absolute[2];
 463                 }
 464
 465                 cdr.Result[6] = 0;
 466                 cdr.Result[7] = 0;
 467
 468                 // Rayman: Logo freeze (resultready + dataready)
 469                 cdr.ResultReady = 1;
 470                 cdr.Stat = DataReady;
 471
 472                 SetResultSize(8);
 473                 setIrq();
 474         }
 475 }
 476
 477 // also handles seek
 478 void cdrPlayInterrupt()
 479 {
 480         if (cdr.Seeked == SEEK_PENDING) {
 481                 if (cdr.Stat) {
 482                         CDR_LOG_I("cdrom: seek stat hack\n");
 483                         CDRMISC_INT(0x1000);
 484                         return;
 485                 }
 486                 SetResultSize(1);
 487                 cdr.StatP |= STATUS_ROTATING;
 488                 cdr.StatP &= ~STATUS_SEEK;
 489                 cdr.Result[0] = cdr.StatP;
 490                 cdr.Seeked = SEEK_DONE;
 491                 if (cdr.Irq == 0) {
 492                         cdr.Stat = Complete;
 493                         setIrq();
 494                 }
 495
 496                 if (cdr.SetlocPending) {
 497                         memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 498                         cdr.SetlocPending = 0;
 499                         cdr.m_locationChanged = TRUE;
 500                 }
 501                 Find_CurTrack(cdr.SetSectorPlay);
 502                 ReadTrack(cdr.SetSectorPlay);
 503                 cdr.TrackChanged = FALSE;
 504         }
 505
 506         if (!cdr.Play) return;
 507
 508         CDR_LOG( "CDDA - %d:%d:%d\n",
 509                 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
 510
 511         if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
 512                 StopCdda();
 513                 cdr.TrackChanged = TRUE;
 514         }
 515
 516         if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
 517                 cdrPlayInterrupt_Autopause();
 518
 519         if (!cdr.Play) return;
 520
 521         cdr.SetSectorPlay[2]++;
 522         if (cdr.SetSectorPlay[2] == 75) {
 523                 cdr.SetSectorPlay[2] = 0;
 524                 cdr.SetSectorPlay[1]++;
 525                 if (cdr.SetSectorPlay[1] == 60) {
 526                         cdr.SetSectorPlay[1] = 0;
 527                         cdr.SetSectorPlay[0]++;
 528                 }
 529         }
 530
 531         if (cdr.m_locationChanged)
 532         {
 533                 CDRMISC_INT(cdReadTime * 30);
 534                 cdr.m_locationChanged = FALSE;
 535         }
 536         else
 537         {
 538                 CDRMISC_INT(cdReadTime);
 539         }
 540
 541         // update for CdlGetlocP/autopause
 542         generate_subq(cdr.SetSectorPlay);
 543 }
 544
 545 void cdrInterrupt() {
 546         u16 Irq = cdr.Irq;
 547         int no_busy_error = 0;
 548         int start_rotating = 0;
 549         int error = 0;
 550         int delay;
 551         unsigned int seekTime = 0;
 552
 553         // Reschedule IRQ
 554         if (cdr.Stat) {
 555                 CDR_LOG_I("cdrom: stat hack: %02x %x\n", cdr.Irq, cdr.Stat);
 556                 CDR_INT(0x1000);
 557                 return;
 558         }
 559
 560         cdr.Ctrl &= ~0x80;
 561
 562         // default response
 563         SetResultSize(1);
 564         cdr.Result[0] = cdr.StatP;
 565         cdr.Stat = Acknowledge;
 566
 567         if (cdr.IrqRepeated) {
 568                 cdr.IrqRepeated = 0;
 569                 if (cdr.eCycle > psxRegs.cycle) {
 570                         CDR_INT(cdr.eCycle);
 571                         goto finish;
 572                 }
 573         }
 574
 575         cdr.Irq = 0;
 576
 577         switch (Irq) {
 578                 case CdlSync:
 579                         // TOOD: sometimes/always return error?
 580                         break;
 581
 582                 case CdlNop:
 583                         if (cdr.DriveState != DRIVESTATE_LID_OPEN)
 584                                 cdr.StatP &= ~STATUS_SHELLOPEN;
 585                         no_busy_error = 1;
 586                         break;
 587
 588                 case CdlSetloc:
 589                         break;
 590
 591                 do_CdlPlay:
 592                 case CdlPlay:
 593                         StopCdda();
 594                         if (cdr.Seeked == SEEK_PENDING) {
 595                                 // XXX: wrong, should seek instead..
 596                                 cdr.Seeked = SEEK_DONE;
 597                         }
 598                         if (cdr.SetlocPending) {
 599                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 600                                 cdr.SetlocPending = 0;
 601                                 cdr.m_locationChanged = TRUE;
 602                         }
 603
 604                         // BIOS CD Player
 605                         // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
 606
 607                         if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
 608                                 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
 609                                         cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
 610                         }
 611                         else
 612                         {
 613                                 int track = btoi( cdr.Param[0] );
 614
 615                                 if (track <= cdr.ResultTN[1])
 616                                         cdr.CurTrack = track;
 617
 618                                 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
 619
 620                                 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
 621                                         cdr.SetSectorPlay[0] = cdr.ResultTD[2];
 622                                         cdr.SetSectorPlay[1] = cdr.ResultTD[1];
 623                                         cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 624                                 }
 625                         }
 626
 627                         /*
 628                         Rayman: detect track changes
 629                         - fixes logo freeze
 630
 631                         Twisted Metal 2: skip PREGAP + starting accurate SubQ
 632                         - plays tracks without retry play
 633
 634                         Wild 9: skip PREGAP + starting accurate SubQ
 635                         - plays tracks without retry play
 636                         */
 637                         Find_CurTrack(cdr.SetSectorPlay);
 638                         ReadTrack(cdr.SetSectorPlay);
 639                         cdr.TrackChanged = FALSE;
 640
 641                         if (!Config.Cdda)
 642                                 CDR_play(cdr.SetSectorPlay);
 643
 644                         // Vib Ribbon: gameplay checks flag
 645                         cdr.StatP &= ~STATUS_SEEK;
 646                         cdr.Result[0] = cdr.StatP;
 647
 648                         cdr.StatP |= STATUS_PLAY;
 649
 650                         // BIOS player - set flag again
 651                         cdr.Play = TRUE;
 652
 653                         CDRMISC_INT( cdReadTime );
 654                         start_rotating = 1;
 655                         break;
 656
 657                 case CdlForward:
 658                         // TODO: error 80 if stopped
 659                         cdr.Stat = Complete;
 660
 661                         // GameShark CD Player: Calls 2x + Play 2x
 662                         if( cdr.FastForward == 0 ) cdr.FastForward = 2;
 663                         else cdr.FastForward++;
 664
 665                         cdr.FastBackward = 0;
 666                         break;
 667
 668                 case CdlBackward:
 669                         cdr.Stat = Complete;
 670
 671                         // GameShark CD Player: Calls 2x + Play 2x
 672                         if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
 673                         else cdr.FastBackward++;
 674
 675                         cdr.FastForward = 0;
 676                         break;
 677
 678                 case CdlStandby:
 679                         if (cdr.DriveState != DRIVESTATE_STOPPED) {
 680                                 error = ERROR_INVALIDARG;
 681                                 goto set_error;
 682                         }
 683                         AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
 684                         start_rotating = 1;
 685                         break;
 686
 687                 case CdlStandby + 0x100:
 688                         cdr.Stat = Complete;
 689                         break;
 690
 691                 case CdlStop:
 692                         if (cdr.Play) {
 693                                 // grab time for current track
 694                                 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
 695
 696                                 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
 697                                 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
 698                                 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 699                         }
 700
 701                         StopCdda();
 702                         StopReading();
 703
 704                         delay = 0x800;
 705                         if (cdr.DriveState == DRIVESTATE_STANDBY)
 706                                 delay = cdReadTime * 30 / 2;
 707
 708                         cdr.DriveState = DRIVESTATE_STOPPED;
 709                         AddIrqQueue(CdlStop + 0x100, delay);
 710                         break;
 711
 712                 case CdlStop + 0x100:
 713                         cdr.StatP &= ~STATUS_ROTATING;
 714                         cdr.Result[0] = cdr.StatP;
 715                         cdr.Stat = Complete;
 716                         break;
 717
 718                 case CdlPause:
 719                         /*
 720                         Gundam Battle Assault 2: much slower (*)
 721                         - Fixes boot, gameplay
 722
 723                         Hokuto no Ken 2: slower
 724                         - Fixes intro + subtitles
 725
 726                         InuYasha - Feudal Fairy Tale: slower
 727                         - Fixes battles
 728                         */
 729                         AddIrqQueue(CdlPause + 0x100, cdReadTime * 3);
 730                         cdr.Ctrl |= 0x80;
 731                         break;
 732
 733                 case CdlPause + 0x100:
 734                         cdr.StatP &= ~STATUS_READ;
 735                         cdr.Result[0] = cdr.StatP;
 736                         cdr.Stat = Complete;
 737                         break;
 738
 739                 case CdlInit:
 740                         AddIrqQueue(CdlInit + 0x100, cdReadTime * 6);
 741                         no_busy_error = 1;
 742                         start_rotating = 1;
 743                         break;
 744
 745                 case CdlInit + 0x100:
 746                         cdr.Stat = Complete;
 747                         break;
 748
 749                 case CdlMute:
 750                         cdr.Muted = TRUE;
 751                         break;
 752
 753                 case CdlDemute:
 754                         cdr.Muted = FALSE;
 755                         break;
 756
 757                 case CdlSetfilter:
 758                         cdr.File = cdr.Param[0];
 759                         cdr.Channel = cdr.Param[1];
 760                         break;
 761
 762                 case CdlSetmode:
 763                         no_busy_error = 1;
 764                         break;
 765
 766                 case CdlGetmode:
 767                         SetResultSize(6);
 768                         cdr.Result[1] = cdr.Mode;
 769                         cdr.Result[2] = cdr.File;
 770                         cdr.Result[3] = cdr.Channel;
 771                         cdr.Result[4] = 0;
 772                         cdr.Result[5] = 0;
 773                         no_busy_error = 1;
 774                         break;
 775
 776                 case CdlGetlocL:
 777                         SetResultSize(8);
 778                         memcpy(cdr.Result, cdr.Transfer, 8);
 779                         break;
 780
 781                 case CdlGetlocP:
 782                         SetResultSize(8);
 783                         memcpy(&cdr.Result, &cdr.subq, 8);
 784
 785                         if (!cdr.Play && !cdr.Reading)
 786                                 cdr.Result[1] = 0; // HACK?
 787                         break;
 788
 789                 case CdlReadT: // SetSession?
 790                         // really long
 791                         AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
 792                         start_rotating = 1;
 793                         break;
 794
 795                 case CdlReadT + 0x100:
 796                         cdr.Stat = Complete;
 797                         break;
 798
 799                 case CdlGetTN:
 800                         SetResultSize(3);
 801                         if (CDR_getTN(cdr.ResultTN) == -1) {
 802                                 cdr.Stat = DiskError;
 803                                 cdr.Result[0] |= STATUS_ERROR;
 804                         } else {
 805                                 cdr.Stat = Acknowledge;
 806                                 cdr.Result[1] = itob(cdr.ResultTN[0]);
 807                                 cdr.Result[2] = itob(cdr.ResultTN[1]);
 808                         }
 809                         break;
 810
 811                 case CdlGetTD:
 812                         cdr.Track = btoi(cdr.Param[0]);
 813                         SetResultSize(4);
 814                         if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
 815                                 cdr.Stat = DiskError;
 816                                 cdr.Result[0] |= STATUS_ERROR;
 817                         } else {
 818                                 cdr.Stat = Acknowledge;
 819                                 cdr.Result[0] = cdr.StatP;
 820                                 cdr.Result[1] = itob(cdr.ResultTD[2]);
 821                                 cdr.Result[2] = itob(cdr.ResultTD[1]);
 822                                 cdr.Result[3] = itob(cdr.ResultTD[0]);
 823                         }
 824                         break;
 825
 826                 case CdlSeekL:
 827                 case CdlSeekP:
 828                         StopCdda();
 829                         StopReading();
 830                         cdr.StatP |= STATUS_SEEK;
 831
 832                         /*
 833                         Crusaders of Might and Magic = 0.5x-4x
 834                         - fix cutscene speech start
 835
 836                         Eggs of Steel = 2x-?
 837                         - fix new game
 838
 839                         Medievil = ?-4x
 840                         - fix cutscene speech
 841
 842                         Rockman X5 = 0.5-4x
 843                         - fix capcom logo
 844                         */
 845                         CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
 846                         cdr.Seeked = SEEK_PENDING;
 847                         start_rotating = 1;
 848                         break;
 849
 850                 case CdlTest:
 851                         switch (cdr.Param[0]) {
 852                                 case 0x20: // System Controller ROM Version
 853                                         SetResultSize(4);
 854                                         memcpy(cdr.Result, Test20, 4);
 855                                         break;
 856                                 case 0x22:
 857                                         SetResultSize(8);
 858                                         memcpy(cdr.Result, Test22, 4);
 859                                         break;
 860                                 case 0x23: case 0x24:
 861                                         SetResultSize(8);
 862                                         memcpy(cdr.Result, Test23, 4);
 863                                         break;
 864                         }
 865                         no_busy_error = 1;
 866                         break;
 867
 868                 case CdlID:
 869                         AddIrqQueue(CdlID + 0x100, 20480);
 870                         break;
 871
 872                 case CdlID + 0x100:
 873                         SetResultSize(8);
 874                         cdr.Result[0] = cdr.StatP;
 875                         cdr.Result[1] = 0;
 876                         cdr.Result[2] = 0;
 877                         cdr.Result[3] = 0;
 878
 879                         // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
 880                         if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
 881                                 cdr.Result[1] = 0xc0;
 882                         }
 883                         else {
 884                                 if (stat.Type == 2)
 885                                         cdr.Result[1] |= 0x10;
 886                                 if (CdromId[0] == '\0')
 887                                         cdr.Result[1] |= 0x80;
 888                         }
 889                         cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
 890
 891                         strncpy((char *)&cdr.Result[4], "PCSX", 4);
 892                         cdr.Stat = Complete;
 893                         break;
 894
 895                 case CdlReset:
 896                         // yes, it really sets STATUS_SHELLOPEN
 897                         cdr.StatP |= STATUS_SHELLOPEN;
 898                         cdr.DriveState = DRIVESTATE_RESCAN_CD;
 899                         CDRLID_INT(20480);
 900                         no_busy_error = 1;
 901                         start_rotating = 1;
 902                         break;
 903
 904                 case CdlGetQ:
 905                         // TODO?
 906                         CDR_LOG_I("got CdlGetQ\n");
 907                         break;
 908
 909                 case CdlReadToc:
 910                         AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
 911                         no_busy_error = 1;
 912                         start_rotating = 1;
 913                         break;
 914
 915                 case CdlReadToc + 0x100:
 916                         cdr.Stat = Complete;
 917                         no_busy_error = 1;
 918                         break;
 919
 920                 case CdlReadN:
 921                 case CdlReadS:
 922                         if (cdr.SetlocPending) {
 923                                 seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
 924                                 if(seekTime > 1000000) seekTime = 1000000;
 925                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 926                                 cdr.SetlocPending = 0;
 927                                 cdr.m_locationChanged = TRUE;
 928                         }
 929                         Find_CurTrack(cdr.SetSectorPlay);
 930
 931                         if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
 932                                 // Read* acts as play for cdda tracks in cdda mode
 933                                 goto do_CdlPlay;
 934
 935                         cdr.Reading = 1;
 936                         cdr.FirstSector = 1;
 937
 938                         // Fighting Force 2 - update subq time immediately
 939                         // - fixes new game
 940                         ReadTrack(cdr.SetSectorPlay);
 941
 942
 943                         // Crusaders of Might and Magic - update getlocl now
 944                         // - fixes cutscene speech
 945                         {
 946                                 u8 *buf = CDR_getBuffer();
 947                                 if (buf != NULL)
 948                                         memcpy(cdr.Transfer, buf, 8);
 949                         }
 950
 951                         /*
 952                         Duke Nukem: Land of the Babes - seek then delay read for one frame
 953                         - fixes cutscenes
 954                         C-12 - Final Resistance - doesn't like seek
 955                         */
 956
 957                         if (cdr.Seeked != SEEK_DONE) {
 958                                 cdr.StatP |= STATUS_SEEK;
 959                                 cdr.StatP &= ~STATUS_READ;
 960
 961                                 // Crusaders of Might and Magic - use short time
 962                                 // - fix cutscene speech (startup)
 963
 964                                 // ??? - use more accurate seek time later
 965                                 CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1) + seekTime);
 966                         } else {
 967                                 cdr.StatP |= STATUS_READ;
 968                                 cdr.StatP &= ~STATUS_SEEK;
 969
 970                                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
 971                         }
 972
 973                         cdr.Result[0] = cdr.StatP;
 974                         start_rotating = 1;
 975                         break;
 976
 977                 default:
 978                         CDR_LOG_I("Invalid command: %02x\n", Irq);
 979                         error = ERROR_INVALIDCMD;
 980                         // FALLTHROUGH
 981
 982                 set_error:
 983                         SetResultSize(2);
 984                         cdr.Result[0] = cdr.StatP | STATUS_ERROR;
 985                         cdr.Result[1] = error;
 986                         cdr.Stat = DiskError;
 987                         break;
 988         }
 989
 990         if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
 991                 cdr.DriveState = DRIVESTATE_STANDBY;
 992                 cdr.StatP |= STATUS_ROTATING;
 993         }
 994
 995         if (!no_busy_error) {
 996                 switch (cdr.DriveState) {
 997                 case DRIVESTATE_LID_OPEN:
 998                 case DRIVESTATE_RESCAN_CD:
 999                 case DRIVESTATE_PREPARE_CD:
1000                         SetResultSize(2);
1001                         cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1002                         cdr.Result[1] = ERROR_NOTREADY;
1003                         cdr.Stat = DiskError;
1004                         break;
1005                 }
1006         }
1007
1008 finish:
1009         setIrq();
1010         cdr.ParamC = 0;
1011
1012 #ifdef CDR_LOG_CMD_IRQ
1013         {
1014                 int i;
1015                 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1016                         !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1017                 for (i = 0; i < cdr.ResultC; i++)
1018                         SysPrintf("%02x ", cdr.Result[i]);
1019                 SysPrintf("\n");
1020         }
1021 #endif
1022 }
1023
1024 #ifdef HAVE_ARMV7
1025  #define ssat32_to_16(v) \
1026   asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1027 #else
1028  #define ssat32_to_16(v) do { \
1029   if (v < -32768) v = -32768; \
1030   else if (v > 32767) v = 32767; \
1031  } while (0)
1032 #endif
1033
1034 void cdrAttenuate(s16 *buf, int samples, int stereo)
1035 {
1036         int i, l, r;
1037         int ll = cdr.AttenuatorLeftToLeft;
1038         int lr = cdr.AttenuatorLeftToRight;
1039         int rl = cdr.AttenuatorRightToLeft;
1040         int rr = cdr.AttenuatorRightToRight;
1041
1042         if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1043                 return;
1044
1045         if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1046                 return;
1047
1048         if (stereo) {
1049                 for (i = 0; i < samples; i++) {
1050                         l = buf[i * 2];
1051                         r = buf[i * 2 + 1];
1052                         l = (l * ll + r * rl) >> 7;
1053                         r = (r * rr + l * lr) >> 7;
1054                         ssat32_to_16(l);
1055                         ssat32_to_16(r);
1056                         buf[i * 2] = l;
1057                         buf[i * 2 + 1] = r;
1058                 }
1059         }
1060         else {
1061                 for (i = 0; i < samples; i++) {
1062                         l = buf[i];
1063                         l = l * (ll + rl) >> 7;
1064                         //r = r * (rr + lr) >> 7;
1065                         ssat32_to_16(l);
1066                         //ssat32_to_16(r);
1067                         buf[i] = l;
1068                 }
1069         }
1070 }
1071
1072 void cdrReadInterrupt() {
1073         u8 *buf;
1074
1075         if (!cdr.Reading)
1076                 return;
1077
1078         if (cdr.Irq || cdr.Stat) {
1079                 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1080                 CDREAD_INT(0x1000);
1081                 return;
1082         }
1083
1084         cdr.OCUP = 1;
1085         SetResultSize(1);
1086         cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1087         cdr.StatP &= ~STATUS_SEEK;
1088         cdr.Result[0] = cdr.StatP;
1089         cdr.Seeked = SEEK_DONE;
1090
1091         ReadTrack(cdr.SetSectorPlay);
1092
1093         buf = CDR_getBuffer();
1094         if (buf == NULL)
1095                 cdr.RErr = -1;
1096
1097         if (cdr.RErr == -1) {
1098                 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1099                 memset(cdr.Transfer, 0, DATA_SIZE);
1100                 cdr.Stat = DiskError;
1101                 cdr.Result[0] |= STATUS_ERROR;
1102                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1103                 return;
1104         }
1105
1106         memcpy(cdr.Transfer, buf, DATA_SIZE);
1107         CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1108
1109
1110         CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1111
1112         if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1113                 // Firemen 2: Multi-XA files - briefings, cutscenes
1114                 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1115                         cdr.File = cdr.Transfer[4 + 0];
1116                         cdr.Channel = cdr.Transfer[4 + 1];
1117                 }
1118
1119                 if((cdr.Transfer[4 + 2] & 0x4) &&
1120                          (cdr.Transfer[4 + 1] == cdr.Channel) &&
1121                          (cdr.Transfer[4 + 0] == cdr.File)) {
1122                         int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1123                         if (!ret) {
1124                                 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1125                                 SPU_playADPCMchannel(&cdr.Xa);
1126                                 cdr.FirstSector = 0;
1127                         }
1128                         else cdr.FirstSector = -1;
1129                 }
1130         }
1131
1132         cdr.SetSectorPlay[2]++;
1133         if (cdr.SetSectorPlay[2] == 75) {
1134                 cdr.SetSectorPlay[2] = 0;
1135                 cdr.SetSectorPlay[1]++;
1136                 if (cdr.SetSectorPlay[1] == 60) {
1137                         cdr.SetSectorPlay[1] = 0;
1138                         cdr.SetSectorPlay[0]++;
1139                 }
1140         }
1141
1142         cdr.Readed = 0;
1143
1144         uint32_t delay = (cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime;
1145         if (cdr.m_locationChanged) {
1146                 CDREAD_INT(delay * 30);
1147                 cdr.m_locationChanged = FALSE;
1148         } else {
1149                 CDREAD_INT(delay);
1150         }
1151
1152         /*
1153         Croc 2: $40 - only FORM1 (*)
1154         Judge Dredd: $C8 - only FORM1 (*)
1155         Sim Theme Park - no adpcm at all (zero)
1156         */
1157
1158         if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1159                 cdr.Stat = DataReady;
1160                 setIrq();
1161         }
1162
1163         // update for CdlGetlocP
1164         ReadTrack(cdr.SetSectorPlay);
1165 }
1166
1167 /*
1168 cdrRead0:
1169         bit 0,1 - mode
1170         bit 2 - unknown
1171         bit 3 - unknown
1172         bit 4 - unknown
1173         bit 5 - 1 result ready
1174         bit 6 - 1 dma ready
1175         bit 7 - 1 command being processed
1176 */
1177
1178 unsigned char cdrRead0(void) {
1179         if (cdr.ResultReady)
1180                 cdr.Ctrl |= 0x20;
1181         else
1182                 cdr.Ctrl &= ~0x20;
1183
1184         if (cdr.OCUP)
1185                 cdr.Ctrl |= 0x40;
1186 //  else
1187 //              cdr.Ctrl &= ~0x40;
1188
1189         // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1190         cdr.Ctrl |= 0x18;
1191
1192         CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1193
1194         return psxHu8(0x1800) = cdr.Ctrl;
1195 }
1196
1197 void cdrWrite0(unsigned char rt) {
1198         CDR_LOG_IO("cdr w0: %02x\n", rt);
1199
1200         cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1201 }
1202
1203 unsigned char cdrRead1(void) {
1204         if ((cdr.ResultP & 0xf) < cdr.ResultC)
1205                 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1206         else
1207                 psxHu8(0x1801) = 0;
1208         cdr.ResultP++;
1209         if (cdr.ResultP == cdr.ResultC)
1210                 cdr.ResultReady = 0;
1211
1212         CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1213
1214         return psxHu8(0x1801);
1215 }
1216
1217 void cdrWrite1(unsigned char rt) {
1218         u8 set_loc[3];
1219         int i;
1220
1221         CDR_LOG_IO("cdr w1: %02x\n", rt);
1222
1223         switch (cdr.Ctrl & 3) {
1224         case 0:
1225                 break;
1226         case 3:
1227                 cdr.AttenuatorRightToRightT = rt;
1228                 return;
1229         default:
1230                 return;
1231         }
1232
1233         cdr.Cmd = rt;
1234         cdr.OCUP = 0;
1235
1236 #ifdef CDR_LOG_CMD_IRQ
1237         SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1238         if (cdr.ParamC) {
1239                 SysPrintf(" Param[%d] = {", cdr.ParamC);
1240                 for (i = 0; i < cdr.ParamC; i++)
1241                         SysPrintf(" %x,", cdr.Param[i]);
1242                 SysPrintf("}\n");
1243         } else {
1244                 SysPrintf("\n");
1245         }
1246 #endif
1247
1248         cdr.ResultReady = 0;
1249         cdr.Ctrl |= 0x80;
1250         // cdr.Stat = NoIntr;
1251         AddIrqQueue(cdr.Cmd, 0x800);
1252
1253         switch (cdr.Cmd) {
1254         case CdlSetloc:
1255                 for (i = 0; i < 3; i++)
1256                         set_loc[i] = btoi(cdr.Param[i]);
1257
1258                 i = msf2sec(cdr.SetSectorPlay);
1259                 i = abs(i - msf2sec(set_loc));
1260                 if (i > 16)
1261                         cdr.Seeked = SEEK_PENDING;
1262
1263                 memcpy(cdr.SetSector, set_loc, 3);
1264                 cdr.SetSector[3] = 0;
1265                 cdr.SetlocPending = 1;
1266                 break;
1267
1268         case CdlReadN:
1269         case CdlReadS:
1270         case CdlPause:
1271                 StopCdda();
1272                 StopReading();
1273                 break;
1274
1275         case CdlReset:
1276         case CdlInit:
1277                 cdr.Seeked = SEEK_DONE;
1278                 StopCdda();
1279                 StopReading();
1280                 break;
1281
1282         case CdlSetmode:
1283                 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1284
1285                 cdr.Mode = cdr.Param[0];
1286
1287                 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1288                 // - fixes choppy movie sound
1289                 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1290                         StopCdda();
1291                 break;
1292         }
1293 }
1294
1295 unsigned char cdrRead2(void) {
1296         unsigned char ret;
1297
1298         if (cdr.Readed == 0) {
1299                 ret = 0;
1300         } else {
1301                 ret = *pTransfer++;
1302         }
1303
1304         CDR_LOG_IO("cdr r2: %02x\n", ret);
1305         return ret;
1306 }
1307
1308 void cdrWrite2(unsigned char rt) {
1309         CDR_LOG_IO("cdr w2: %02x\n", rt);
1310
1311         switch (cdr.Ctrl & 3) {
1312         case 0:
1313                 if (cdr.ParamC < 8) // FIXME: size and wrapping
1314                         cdr.Param[cdr.ParamC++] = rt;
1315                 return;
1316         case 1:
1317                 cdr.Reg2 = rt;
1318                 setIrq();
1319                 return;
1320         case 2:
1321                 cdr.AttenuatorLeftToLeftT = rt;
1322                 return;
1323         case 3:
1324                 cdr.AttenuatorRightToLeftT = rt;
1325                 return;
1326         }
1327 }
1328
1329 unsigned char cdrRead3(void) {
1330         if (cdr.Ctrl & 0x1)
1331                 psxHu8(0x1803) = cdr.Stat | 0xE0;
1332         else
1333                 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1334
1335         CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1336         return psxHu8(0x1803);
1337 }
1338
1339 void cdrWrite3(unsigned char rt) {
1340         CDR_LOG_IO("cdr w3: %02x\n", rt);
1341
1342         switch (cdr.Ctrl & 3) {
1343         case 0:
1344                 break; // transfer
1345         case 1:
1346                 cdr.Stat &= ~rt;
1347
1348                 if (rt & 0x40)
1349                         cdr.ParamC = 0;
1350                 return;
1351         case 2:
1352                 cdr.AttenuatorLeftToRightT = rt;
1353                 return;
1354         case 3:
1355                 if (rt & 0x20) {
1356                         memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1357                         CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1358                                 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1359                                 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1360                 }
1361                 return;
1362         }
1363
1364         if ((rt & 0x80) && cdr.Readed == 0) {
1365                 cdr.Readed = 1;
1366                 pTransfer = cdr.Transfer;
1367
1368                 switch (cdr.Mode & 0x30) {
1369                         case MODE_SIZE_2328:
1370                         case 0x00:
1371                                 pTransfer += 12;
1372                                 break;
1373
1374                         case MODE_SIZE_2340:
1375                                 pTransfer += 0;
1376                                 break;
1377
1378                         default:
1379                                 break;
1380                 }
1381         }
1382 }
1383
1384 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1385         u32 cdsize;
1386         int size;
1387         u8 *ptr;
1388
1389         CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1390
1391         switch (chcr) {
1392                 case 0x11000000:
1393                 case 0x11400100:
1394                         if (cdr.Readed == 0) {
1395                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1396                                 break;
1397                         }
1398
1399                         cdsize = (bcr & 0xffff) * 4;
1400
1401                         // Ape Escape: bcr = 0001 / 0000
1402                         // - fix boot
1403                         if( cdsize == 0 )
1404                         {
1405                                 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1406                                         case MODE_SIZE_2340: cdsize = 2340; break;
1407                                         case MODE_SIZE_2328: cdsize = 2328; break;
1408                                         default:
1409                                         case MODE_SIZE_2048: cdsize = 2048; break;
1410                                 }
1411                         }
1412
1413
1414                         ptr = (u8 *)PSXM(madr);
1415                         if (ptr == NULL) {
1416                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1417                                 break;
1418                         }
1419
1420                         /*
1421                         GS CDX: Enhancement CD crash
1422                         - Setloc 0:0:0
1423                         - CdlPlay
1424                         - Spams DMA3 and gets buffer overrun
1425                         */
1426                         size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1427                         if (size > cdsize)
1428                                 size = cdsize;
1429                         if (size > 0)
1430                         {
1431                                 memcpy(ptr, pTransfer, size);
1432                         }
1433
1434                         psxCpu->Clear(madr, cdsize / 4);
1435                         pTransfer += cdsize;
1436
1437                         if( chcr == 0x11400100 ) {
1438                                 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1439                                 CDRDMA_INT( (cdsize/4) / 4 );
1440                         }
1441                         else if( chcr == 0x11000000 ) {
1442                                 // CDRDMA_INT( (cdsize/4) * 1 );
1443                                 // halted
1444                                 psxRegs.cycle += (cdsize/4) * 24/2;
1445                                 CDRDMA_INT(16);
1446                         }
1447                         return;
1448
1449                 default:
1450                         CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1451                         break;
1452         }
1453
1454         HW_DMA3_CHCR &= SWAP32(~0x01000000);
1455         DMA_INTERRUPT(3);
1456 }
1457
1458 void cdrDmaInterrupt()
1459 {
1460         if (HW_DMA3_CHCR & SWAP32(0x01000000))
1461         {
1462                 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1463                 DMA_INTERRUPT(3);
1464         }
1465 }
1466
1467 static void getCdInfo(void)
1468 {
1469         u8 tmp;
1470
1471         CDR_getTN(cdr.ResultTN);
1472         CDR_getTD(0, cdr.SetSectorEnd);
1473         tmp = cdr.SetSectorEnd[0];
1474         cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1475         cdr.SetSectorEnd[2] = tmp;
1476 }
1477
1478 void cdrReset() {
1479         memset(&cdr, 0, sizeof(cdr));
1480         cdr.CurTrack = 1;
1481         cdr.File = 1;
1482         cdr.Channel = 1;
1483         cdr.Reg2 = 0x1f;
1484         cdr.Stat = NoIntr;
1485         cdr.DriveState = DRIVESTATE_STANDBY;
1486         cdr.StatP = STATUS_ROTATING;
1487         pTransfer = cdr.Transfer;
1488         cdr.SetlocPending = 0;
1489         cdr.m_locationChanged = FALSE;
1490
1491         // BIOS player - default values
1492         cdr.AttenuatorLeftToLeft = 0x80;
1493         cdr.AttenuatorLeftToRight = 0x00;
1494         cdr.AttenuatorRightToLeft = 0x00;
1495         cdr.AttenuatorRightToRight = 0x80;
1496
1497         getCdInfo();
1498 }
1499
1500 int cdrFreeze(void *f, int Mode) {
1501         u32 tmp;
1502         u8 tmpp[3];
1503
1504         if (Mode == 0 && !Config.Cdda)
1505                 CDR_stop();
1506
1507         cdr.freeze_ver = 0x63647202;
1508         gzfreeze(&cdr, sizeof(cdr));
1509
1510         if (Mode == 1) {
1511                 cdr.ParamP = cdr.ParamC;
1512                 tmp = pTransfer - cdr.Transfer;
1513         }
1514
1515         gzfreeze(&tmp, sizeof(tmp));
1516
1517         if (Mode == 0) {
1518                 getCdInfo();
1519
1520                 pTransfer = cdr.Transfer + tmp;
1521
1522                 // read right sub data
1523                 tmpp[0] = btoi(cdr.Prev[0]);
1524                 tmpp[1] = btoi(cdr.Prev[1]);
1525                 tmpp[2] = btoi(cdr.Prev[2]);
1526                 cdr.Prev[0]++;
1527                 ReadTrack(tmpp);
1528
1529                 if (cdr.Play) {
1530                         if (cdr.freeze_ver < 0x63647202)
1531                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1532
1533                         Find_CurTrack(cdr.SetSectorPlay);
1534                         if (!Config.Cdda)
1535                                 CDR_play(cdr.SetSectorPlay);
1536                 }
1537
1538                 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1539                         // old versions did not latch Reg2, have to fixup..
1540                         if (cdr.Reg2 == 0) {
1541                                 SysPrintf("cdrom: fixing up old savestate\n");
1542                                 cdr.Reg2 = 7;
1543                         }
1544                         // also did not save Attenuator..
1545                         if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1546                              | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1547                         {
1548                                 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1549                         }
1550                 }
1551         }
1552
1553         return 0;
1554 }
1555
1556 void LidInterrupt() {
1557         getCdInfo();
1558         StopCdda();
1559         cdrLidSeekInterrupt();
1560 }