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                 }
 500                 Find_CurTrack(cdr.SetSectorPlay);
 501                 ReadTrack(cdr.SetSectorPlay);
 502                 cdr.TrackChanged = FALSE;
 503         }
 504
 505         if (!cdr.Play) return;
 506
 507         CDR_LOG( "CDDA - %d:%d:%d\n",
 508                 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
 509
 510         if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
 511                 StopCdda();
 512                 cdr.TrackChanged = TRUE;
 513         }
 514
 515         if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
 516                 cdrPlayInterrupt_Autopause();
 517
 518         if (!cdr.Play) return;
 519
 520         cdr.SetSectorPlay[2]++;
 521         if (cdr.SetSectorPlay[2] == 75) {
 522                 cdr.SetSectorPlay[2] = 0;
 523                 cdr.SetSectorPlay[1]++;
 524                 if (cdr.SetSectorPlay[1] == 60) {
 525                         cdr.SetSectorPlay[1] = 0;
 526                         cdr.SetSectorPlay[0]++;
 527                 }
 528         }
 529
 530         CDRMISC_INT(cdReadTime);
 531
 532         // update for CdlGetlocP/autopause
 533         generate_subq(cdr.SetSectorPlay);
 534 }
 535
 536 void cdrInterrupt() {
 537         u16 Irq = cdr.Irq;
 538         int no_busy_error = 0;
 539         int start_rotating = 0;
 540         int error = 0;
 541         int delay;
 542
 543         // Reschedule IRQ
 544         if (cdr.Stat) {
 545                 CDR_LOG_I("cdrom: stat hack: %02x %x\n", cdr.Irq, cdr.Stat);
 546                 CDR_INT(0x1000);
 547                 return;
 548         }
 549
 550         cdr.Ctrl &= ~0x80;
 551
 552         // default response
 553         SetResultSize(1);
 554         cdr.Result[0] = cdr.StatP;
 555         cdr.Stat = Acknowledge;
 556
 557         if (cdr.IrqRepeated) {
 558                 cdr.IrqRepeated = 0;
 559                 if (cdr.eCycle > psxRegs.cycle) {
 560                         CDR_INT(cdr.eCycle);
 561                         goto finish;
 562                 }
 563         }
 564
 565         cdr.Irq = 0;
 566
 567         switch (Irq) {
 568                 case CdlSync:
 569                         // TOOD: sometimes/always return error?
 570                         break;
 571
 572                 case CdlNop:
 573                         if (cdr.DriveState != DRIVESTATE_LID_OPEN)
 574                                 cdr.StatP &= ~STATUS_SHELLOPEN;
 575                         no_busy_error = 1;
 576                         break;
 577
 578                 case CdlSetloc:
 579                         break;
 580
 581                 do_CdlPlay:
 582                 case CdlPlay:
 583                         StopCdda();
 584                         if (cdr.Seeked == SEEK_PENDING) {
 585                                 // XXX: wrong, should seek instead..
 586                                 cdr.Seeked = SEEK_DONE;
 587                         }
 588                         if (cdr.SetlocPending) {
 589                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 590                                 cdr.SetlocPending = 0;
 591                         }
 592
 593                         // BIOS CD Player
 594                         // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
 595
 596                         if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
 597                                 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
 598                                         cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
 599                         }
 600                         else
 601                         {
 602                                 int track = btoi( cdr.Param[0] );
 603
 604                                 if (track <= cdr.ResultTN[1])
 605                                         cdr.CurTrack = track;
 606
 607                                 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
 608
 609                                 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
 610                                         cdr.SetSectorPlay[0] = cdr.ResultTD[2];
 611                                         cdr.SetSectorPlay[1] = cdr.ResultTD[1];
 612                                         cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 613                                 }
 614                         }
 615
 616                         /*
 617                         Rayman: detect track changes
 618                         - fixes logo freeze
 619
 620                         Twisted Metal 2: skip PREGAP + starting accurate SubQ
 621                         - plays tracks without retry play
 622
 623                         Wild 9: skip PREGAP + starting accurate SubQ
 624                         - plays tracks without retry play
 625                         */
 626                         Find_CurTrack(cdr.SetSectorPlay);
 627                         ReadTrack(cdr.SetSectorPlay);
 628                         cdr.TrackChanged = FALSE;
 629
 630                         if (!Config.Cdda)
 631                                 CDR_play(cdr.SetSectorPlay);
 632
 633                         // Vib Ribbon: gameplay checks flag
 634                         cdr.StatP &= ~STATUS_SEEK;
 635                         cdr.Result[0] = cdr.StatP;
 636
 637                         cdr.StatP |= STATUS_PLAY;
 638
 639                         // BIOS player - set flag again
 640                         cdr.Play = TRUE;
 641
 642                         CDRMISC_INT( cdReadTime );
 643                         start_rotating = 1;
 644                         break;
 645
 646                 case CdlForward:
 647                         // TODO: error 80 if stopped
 648                         cdr.Stat = Complete;
 649
 650                         // GameShark CD Player: Calls 2x + Play 2x
 651                         if( cdr.FastForward == 0 ) cdr.FastForward = 2;
 652                         else cdr.FastForward++;
 653
 654                         cdr.FastBackward = 0;
 655                         break;
 656
 657                 case CdlBackward:
 658                         cdr.Stat = Complete;
 659
 660                         // GameShark CD Player: Calls 2x + Play 2x
 661                         if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
 662                         else cdr.FastBackward++;
 663
 664                         cdr.FastForward = 0;
 665                         break;
 666
 667                 case CdlStandby:
 668                         if (cdr.DriveState != DRIVESTATE_STOPPED) {
 669                                 error = ERROR_INVALIDARG;
 670                                 goto set_error;
 671                         }
 672                         AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
 673                         start_rotating = 1;
 674                         break;
 675
 676                 case CdlStandby + 0x100:
 677                         cdr.Stat = Complete;
 678                         break;
 679
 680                 case CdlStop:
 681                         if (cdr.Play) {
 682                                 // grab time for current track
 683                                 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
 684
 685                                 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
 686                                 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
 687                                 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 688                         }
 689
 690                         StopCdda();
 691                         StopReading();
 692
 693                         delay = 0x800;
 694                         if (cdr.DriveState == DRIVESTATE_STANDBY)
 695                                 delay = cdReadTime * 30 / 2;
 696
 697                         cdr.DriveState = DRIVESTATE_STOPPED;
 698                         AddIrqQueue(CdlStop + 0x100, delay);
 699                         break;
 700
 701                 case CdlStop + 0x100:
 702                         cdr.StatP &= ~STATUS_ROTATING;
 703                         cdr.Result[0] = cdr.StatP;
 704                         cdr.Stat = Complete;
 705                         break;
 706
 707                 case CdlPause:
 708                         /*
 709                         Gundam Battle Assault 2: much slower (*)
 710                         - Fixes boot, gameplay
 711
 712                         Hokuto no Ken 2: slower
 713                         - Fixes intro + subtitles
 714
 715                         InuYasha - Feudal Fairy Tale: slower
 716                         - Fixes battles
 717                         */
 718                         AddIrqQueue(CdlPause + 0x100, cdReadTime * 3);
 719                         cdr.Ctrl |= 0x80;
 720                         break;
 721
 722                 case CdlPause + 0x100:
 723                         cdr.StatP &= ~STATUS_READ;
 724                         cdr.Result[0] = cdr.StatP;
 725                         cdr.Stat = Complete;
 726                         break;
 727
 728                 case CdlInit:
 729                         AddIrqQueue(CdlInit + 0x100, cdReadTime * 6);
 730                         no_busy_error = 1;
 731                         start_rotating = 1;
 732                         break;
 733
 734                 case CdlInit + 0x100:
 735                         cdr.Stat = Complete;
 736                         break;
 737
 738                 case CdlMute:
 739                         cdr.Muted = TRUE;
 740                         break;
 741
 742                 case CdlDemute:
 743                         cdr.Muted = FALSE;
 744                         break;
 745
 746                 case CdlSetfilter:
 747                         cdr.File = cdr.Param[0];
 748                         cdr.Channel = cdr.Param[1];
 749                         break;
 750
 751                 case CdlSetmode:
 752                         no_busy_error = 1;
 753                         break;
 754
 755                 case CdlGetmode:
 756                         SetResultSize(6);
 757                         cdr.Result[1] = cdr.Mode;
 758                         cdr.Result[2] = cdr.File;
 759                         cdr.Result[3] = cdr.Channel;
 760                         cdr.Result[4] = 0;
 761                         cdr.Result[5] = 0;
 762                         no_busy_error = 1;
 763                         break;
 764
 765                 case CdlGetlocL:
 766                         SetResultSize(8);
 767                         memcpy(cdr.Result, cdr.Transfer, 8);
 768                         break;
 769
 770                 case CdlGetlocP:
 771                         SetResultSize(8);
 772                         memcpy(&cdr.Result, &cdr.subq, 8);
 773
 774                         if (!cdr.Play && !cdr.Reading)
 775                                 cdr.Result[1] = 0; // HACK?
 776                         break;
 777
 778                 case CdlReadT: // SetSession?
 779                         // really long
 780                         AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
 781                         start_rotating = 1;
 782                         break;
 783
 784                 case CdlReadT + 0x100:
 785                         cdr.Stat = Complete;
 786                         break;
 787
 788                 case CdlGetTN:
 789                         SetResultSize(3);
 790                         if (CDR_getTN(cdr.ResultTN) == -1) {
 791                                 cdr.Stat = DiskError;
 792                                 cdr.Result[0] |= STATUS_ERROR;
 793                         } else {
 794                                 cdr.Stat = Acknowledge;
 795                                 cdr.Result[1] = itob(cdr.ResultTN[0]);
 796                                 cdr.Result[2] = itob(cdr.ResultTN[1]);
 797                         }
 798                         break;
 799
 800                 case CdlGetTD:
 801                         cdr.Track = btoi(cdr.Param[0]);
 802                         SetResultSize(4);
 803                         if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
 804                                 cdr.Stat = DiskError;
 805                                 cdr.Result[0] |= STATUS_ERROR;
 806                         } else {
 807                                 cdr.Stat = Acknowledge;
 808                                 cdr.Result[0] = cdr.StatP;
 809                                 cdr.Result[1] = itob(cdr.ResultTD[2]);
 810                                 cdr.Result[2] = itob(cdr.ResultTD[1]);
 811                                 cdr.Result[3] = itob(cdr.ResultTD[0]);
 812                         }
 813                         break;
 814
 815                 case CdlSeekL:
 816                 case CdlSeekP:
 817                         StopCdda();
 818                         StopReading();
 819                         cdr.StatP |= STATUS_SEEK;
 820
 821                         /*
 822                         Crusaders of Might and Magic = 0.5x-4x
 823                         - fix cutscene speech start
 824
 825                         Eggs of Steel = 2x-?
 826                         - fix new game
 827
 828                         Medievil = ?-4x
 829                         - fix cutscene speech
 830
 831                         Rockman X5 = 0.5-4x
 832                         - fix capcom logo
 833                         */
 834                         CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
 835                         cdr.Seeked = SEEK_PENDING;
 836                         start_rotating = 1;
 837                         break;
 838
 839                 case CdlTest:
 840                         switch (cdr.Param[0]) {
 841                                 case 0x20: // System Controller ROM Version
 842                                         SetResultSize(4);
 843                                         memcpy(cdr.Result, Test20, 4);
 844                                         break;
 845                                 case 0x22:
 846                                         SetResultSize(8);
 847                                         memcpy(cdr.Result, Test22, 4);
 848                                         break;
 849                                 case 0x23: case 0x24:
 850                                         SetResultSize(8);
 851                                         memcpy(cdr.Result, Test23, 4);
 852                                         break;
 853                         }
 854                         no_busy_error = 1;
 855                         break;
 856
 857                 case CdlID:
 858                         AddIrqQueue(CdlID + 0x100, 20480);
 859                         break;
 860
 861                 case CdlID + 0x100:
 862                         SetResultSize(8);
 863                         cdr.Result[0] = cdr.StatP;
 864                         cdr.Result[1] = 0;
 865                         cdr.Result[2] = 0;
 866                         cdr.Result[3] = 0;
 867
 868                         // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
 869                         if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
 870                                 cdr.Result[1] = 0xc0;
 871                         }
 872                         else {
 873                                 if (stat.Type == 2)
 874                                         cdr.Result[1] |= 0x10;
 875                                 if (CdromId[0] == '\0')
 876                                         cdr.Result[1] |= 0x80;
 877                         }
 878                         cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
 879
 880                         strncpy((char *)&cdr.Result[4], "PCSX", 4);
 881                         cdr.Stat = Complete;
 882                         break;
 883
 884                 case CdlReset:
 885                         // yes, it really sets STATUS_SHELLOPEN
 886                         cdr.StatP |= STATUS_SHELLOPEN;
 887                         cdr.DriveState = DRIVESTATE_RESCAN_CD;
 888                         CDRLID_INT(20480);
 889                         no_busy_error = 1;
 890                         start_rotating = 1;
 891                         break;
 892
 893                 case CdlGetQ:
 894                         // TODO?
 895                         CDR_LOG_I("got CdlGetQ\n");
 896                         break;
 897
 898                 case CdlReadToc:
 899                         AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
 900                         no_busy_error = 1;
 901                         start_rotating = 1;
 902                         break;
 903
 904                 case CdlReadToc + 0x100:
 905                         cdr.Stat = Complete;
 906                         no_busy_error = 1;
 907                         break;
 908
 909                 case CdlReadN:
 910                 case CdlReadS:
 911                         if (cdr.SetlocPending) {
 912                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 913                                 cdr.SetlocPending = 0;
 914                         }
 915                         Find_CurTrack(cdr.SetSectorPlay);
 916
 917                         if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
 918                                 // Read* acts as play for cdda tracks in cdda mode
 919                                 goto do_CdlPlay;
 920
 921                         cdr.Reading = 1;
 922                         cdr.FirstSector = 1;
 923
 924                         // Fighting Force 2 - update subq time immediately
 925                         // - fixes new game
 926                         ReadTrack(cdr.SetSectorPlay);
 927
 928
 929                         // Crusaders of Might and Magic - update getlocl now
 930                         // - fixes cutscene speech
 931                         {
 932                                 u8 *buf = CDR_getBuffer();
 933                                 if (buf != NULL)
 934                                         memcpy(cdr.Transfer, buf, 8);
 935                         }
 936
 937                         /*
 938                         Duke Nukem: Land of the Babes - seek then delay read for one frame
 939                         - fixes cutscenes
 940                         C-12 - Final Resistance - doesn't like seek
 941                         */
 942
 943                         if (cdr.Seeked != SEEK_DONE) {
 944                                 cdr.StatP |= STATUS_SEEK;
 945                                 cdr.StatP &= ~STATUS_READ;
 946
 947                                 // Crusaders of Might and Magic - use short time
 948                                 // - fix cutscene speech (startup)
 949
 950                                 // ??? - use more accurate seek time later
 951                                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
 952                         } else {
 953                                 cdr.StatP |= STATUS_READ;
 954                                 cdr.StatP &= ~STATUS_SEEK;
 955
 956                                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
 957                         }
 958
 959                         cdr.Result[0] = cdr.StatP;
 960                         start_rotating = 1;
 961                         break;
 962
 963                 default:
 964                         CDR_LOG_I("Invalid command: %02x\n", Irq);
 965                         error = ERROR_INVALIDCMD;
 966                         // FALLTHROUGH
 967
 968                 set_error:
 969                         SetResultSize(2);
 970                         cdr.Result[0] = cdr.StatP | STATUS_ERROR;
 971                         cdr.Result[1] = error;
 972                         cdr.Stat = DiskError;
 973                         break;
 974         }
 975
 976         if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
 977                 cdr.DriveState = DRIVESTATE_STANDBY;
 978                 cdr.StatP |= STATUS_ROTATING;
 979         }
 980
 981         if (!no_busy_error) {
 982                 switch (cdr.DriveState) {
 983                 case DRIVESTATE_LID_OPEN:
 984                 case DRIVESTATE_RESCAN_CD:
 985                 case DRIVESTATE_PREPARE_CD:
 986                         SetResultSize(2);
 987                         cdr.Result[0] = cdr.StatP | STATUS_ERROR;
 988                         cdr.Result[1] = ERROR_NOTREADY;
 989                         cdr.Stat = DiskError;
 990                         break;
 991                 }
 992         }
 993
 994 finish:
 995         setIrq();
 996         cdr.ParamC = 0;
 997
 998 #ifdef CDR_LOG_CMD_IRQ
 999         {
1000                 int i;
1001                 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1002                         !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1003                 for (i = 0; i < cdr.ResultC; i++)
1004                         SysPrintf("%02x ", cdr.Result[i]);
1005                 SysPrintf("\n");
1006         }
1007 #endif
1008 }
1009
1010 #ifdef HAVE_ARMV7
1011  #define ssat32_to_16(v) \
1012   asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1013 #else
1014  #define ssat32_to_16(v) do { \
1015   if (v < -32768) v = -32768; \
1016   else if (v > 32767) v = 32767; \
1017  } while (0)
1018 #endif
1019
1020 void cdrAttenuate(s16 *buf, int samples, int stereo)
1021 {
1022         int i, l, r;
1023         int ll = cdr.AttenuatorLeftToLeft;
1024         int lr = cdr.AttenuatorLeftToRight;
1025         int rl = cdr.AttenuatorRightToLeft;
1026         int rr = cdr.AttenuatorRightToRight;
1027
1028         if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1029                 return;
1030
1031         if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1032                 return;
1033
1034         if (stereo) {
1035                 for (i = 0; i < samples; i++) {
1036                         l = buf[i * 2];
1037                         r = buf[i * 2 + 1];
1038                         l = (l * ll + r * rl) >> 7;
1039                         r = (r * rr + l * lr) >> 7;
1040                         ssat32_to_16(l);
1041                         ssat32_to_16(r);
1042                         buf[i * 2] = l;
1043                         buf[i * 2 + 1] = r;
1044                 }
1045         }
1046         else {
1047                 for (i = 0; i < samples; i++) {
1048                         l = buf[i];
1049                         l = l * (ll + rl) >> 7;
1050                         //r = r * (rr + lr) >> 7;
1051                         ssat32_to_16(l);
1052                         //ssat32_to_16(r);
1053                         buf[i] = l;
1054                 }
1055         }
1056 }
1057
1058 void cdrReadInterrupt() {
1059         u8 *buf;
1060
1061         if (!cdr.Reading)
1062                 return;
1063
1064         if (cdr.Irq || cdr.Stat) {
1065                 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1066                 CDREAD_INT(0x1000);
1067                 return;
1068         }
1069
1070         cdr.OCUP = 1;
1071         SetResultSize(1);
1072         cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1073         cdr.StatP &= ~STATUS_SEEK;
1074         cdr.Result[0] = cdr.StatP;
1075         cdr.Seeked = SEEK_DONE;
1076
1077         ReadTrack(cdr.SetSectorPlay);
1078
1079         buf = CDR_getBuffer();
1080         if (buf == NULL)
1081                 cdr.RErr = -1;
1082
1083         if (cdr.RErr == -1) {
1084                 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1085                 memset(cdr.Transfer, 0, DATA_SIZE);
1086                 cdr.Stat = DiskError;
1087                 cdr.Result[0] |= STATUS_ERROR;
1088                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1089                 return;
1090         }
1091
1092         memcpy(cdr.Transfer, buf, DATA_SIZE);
1093         CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1094
1095
1096         CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1097
1098         if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1099                 // Firemen 2: Multi-XA files - briefings, cutscenes
1100                 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1101                         cdr.File = cdr.Transfer[4 + 0];
1102                         cdr.Channel = cdr.Transfer[4 + 1];
1103                 }
1104
1105                 if((cdr.Transfer[4 + 2] & 0x4) &&
1106                          (cdr.Transfer[4 + 1] == cdr.Channel) &&
1107                          (cdr.Transfer[4 + 0] == cdr.File)) {
1108                         int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1109                         if (!ret) {
1110                                 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1111                                 SPU_playADPCMchannel(&cdr.Xa);
1112                                 cdr.FirstSector = 0;
1113                         }
1114                         else cdr.FirstSector = -1;
1115                 }
1116         }
1117
1118         cdr.SetSectorPlay[2]++;
1119         if (cdr.SetSectorPlay[2] == 75) {
1120                 cdr.SetSectorPlay[2] = 0;
1121                 cdr.SetSectorPlay[1]++;
1122                 if (cdr.SetSectorPlay[1] == 60) {
1123                         cdr.SetSectorPlay[1] = 0;
1124                         cdr.SetSectorPlay[0]++;
1125                 }
1126         }
1127
1128         cdr.Readed = 0;
1129
1130         CDREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
1131
1132         /*
1133         Croc 2: $40 - only FORM1 (*)
1134         Judge Dredd: $C8 - only FORM1 (*)
1135         Sim Theme Park - no adpcm at all (zero)
1136         */
1137
1138         if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1139                 cdr.Stat = DataReady;
1140                 setIrq();
1141         }
1142
1143         // update for CdlGetlocP
1144         ReadTrack(cdr.SetSectorPlay);
1145 }
1146
1147 /*
1148 cdrRead0:
1149         bit 0,1 - mode
1150         bit 2 - unknown
1151         bit 3 - unknown
1152         bit 4 - unknown
1153         bit 5 - 1 result ready
1154         bit 6 - 1 dma ready
1155         bit 7 - 1 command being processed
1156 */
1157
1158 unsigned char cdrRead0(void) {
1159         if (cdr.ResultReady)
1160                 cdr.Ctrl |= 0x20;
1161         else
1162                 cdr.Ctrl &= ~0x20;
1163
1164         if (cdr.OCUP)
1165                 cdr.Ctrl |= 0x40;
1166 //  else
1167 //              cdr.Ctrl &= ~0x40;
1168
1169         // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1170         cdr.Ctrl |= 0x18;
1171
1172         CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1173
1174         return psxHu8(0x1800) = cdr.Ctrl;
1175 }
1176
1177 void cdrWrite0(unsigned char rt) {
1178         CDR_LOG_IO("cdr w0: %02x\n", rt);
1179
1180         cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1181 }
1182
1183 unsigned char cdrRead1(void) {
1184         if ((cdr.ResultP & 0xf) < cdr.ResultC)
1185                 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1186         else
1187                 psxHu8(0x1801) = 0;
1188         cdr.ResultP++;
1189         if (cdr.ResultP == cdr.ResultC)
1190                 cdr.ResultReady = 0;
1191
1192         CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1193
1194         return psxHu8(0x1801);
1195 }
1196
1197 void cdrWrite1(unsigned char rt) {
1198         u8 set_loc[3];
1199         int i;
1200
1201         CDR_LOG_IO("cdr w1: %02x\n", rt);
1202
1203         switch (cdr.Ctrl & 3) {
1204         case 0:
1205                 break;
1206         case 3:
1207                 cdr.AttenuatorRightToRightT = rt;
1208                 return;
1209         default:
1210                 return;
1211         }
1212
1213         cdr.Cmd = rt;
1214         cdr.OCUP = 0;
1215
1216 #ifdef CDR_LOG_CMD_IRQ
1217         SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1218         if (cdr.ParamC) {
1219                 SysPrintf(" Param[%d] = {", cdr.ParamC);
1220                 for (i = 0; i < cdr.ParamC; i++)
1221                         SysPrintf(" %x,", cdr.Param[i]);
1222                 SysPrintf("}\n");
1223         } else {
1224                 SysPrintf("\n");
1225         }
1226 #endif
1227
1228         cdr.ResultReady = 0;
1229         cdr.Ctrl |= 0x80;
1230         // cdr.Stat = NoIntr;
1231         AddIrqQueue(cdr.Cmd, 0x800);
1232
1233         switch (cdr.Cmd) {
1234         case CdlSetloc:
1235                 for (i = 0; i < 3; i++)
1236                         set_loc[i] = btoi(cdr.Param[i]);
1237
1238                 i = msf2sec(cdr.SetSectorPlay);
1239                 i = abs(i - msf2sec(set_loc));
1240                 if (i > 16)
1241                         cdr.Seeked = SEEK_PENDING;
1242
1243                 memcpy(cdr.SetSector, set_loc, 3);
1244                 cdr.SetSector[3] = 0;
1245                 cdr.SetlocPending = 1;
1246                 break;
1247
1248         case CdlReadN:
1249         case CdlReadS:
1250         case CdlPause:
1251                 StopCdda();
1252                 StopReading();
1253                 break;
1254
1255         case CdlReset:
1256         case CdlInit:
1257                 cdr.Seeked = SEEK_DONE;
1258                 StopCdda();
1259                 StopReading();
1260                 break;
1261
1262         case CdlSetmode:
1263                 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1264
1265                 cdr.Mode = cdr.Param[0];
1266
1267                 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1268                 // - fixes choppy movie sound
1269                 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1270                         StopCdda();
1271                 break;
1272         }
1273 }
1274
1275 unsigned char cdrRead2(void) {
1276         unsigned char ret;
1277
1278         if (cdr.Readed == 0) {
1279                 ret = 0;
1280         } else {
1281                 ret = *pTransfer++;
1282         }
1283
1284         CDR_LOG_IO("cdr r2: %02x\n", ret);
1285         return ret;
1286 }
1287
1288 void cdrWrite2(unsigned char rt) {
1289         CDR_LOG_IO("cdr w2: %02x\n", rt);
1290
1291         switch (cdr.Ctrl & 3) {
1292         case 0:
1293                 if (cdr.ParamC < 8) // FIXME: size and wrapping
1294                         cdr.Param[cdr.ParamC++] = rt;
1295                 return;
1296         case 1:
1297                 cdr.Reg2 = rt;
1298                 setIrq();
1299                 return;
1300         case 2:
1301                 cdr.AttenuatorLeftToLeftT = rt;
1302                 return;
1303         case 3:
1304                 cdr.AttenuatorRightToLeftT = rt;
1305                 return;
1306         }
1307 }
1308
1309 unsigned char cdrRead3(void) {
1310         if (cdr.Ctrl & 0x1)
1311                 psxHu8(0x1803) = cdr.Stat | 0xE0;
1312         else
1313                 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1314
1315         CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1316         return psxHu8(0x1803);
1317 }
1318
1319 void cdrWrite3(unsigned char rt) {
1320         CDR_LOG_IO("cdr w3: %02x\n", rt);
1321
1322         switch (cdr.Ctrl & 3) {
1323         case 0:
1324                 break; // transfer
1325         case 1:
1326                 cdr.Stat &= ~rt;
1327
1328                 if (rt & 0x40)
1329                         cdr.ParamC = 0;
1330                 return;
1331         case 2:
1332                 cdr.AttenuatorLeftToRightT = rt;
1333                 return;
1334         case 3:
1335                 if (rt & 0x20) {
1336                         memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1337                         CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1338                                 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1339                                 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1340                 }
1341                 return;
1342         }
1343
1344         if ((rt & 0x80) && cdr.Readed == 0) {
1345                 cdr.Readed = 1;
1346                 pTransfer = cdr.Transfer;
1347
1348                 switch (cdr.Mode & 0x30) {
1349                         case MODE_SIZE_2328:
1350                         case 0x00:
1351                                 pTransfer += 12;
1352                                 break;
1353
1354                         case MODE_SIZE_2340:
1355                                 pTransfer += 0;
1356                                 break;
1357
1358                         default:
1359                                 break;
1360                 }
1361         }
1362 }
1363
1364 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1365         u32 cdsize;
1366         int size;
1367         u8 *ptr;
1368
1369         CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1370
1371         switch (chcr) {
1372                 case 0x11000000:
1373                 case 0x11400100:
1374                         if (cdr.Readed == 0) {
1375                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1376                                 break;
1377                         }
1378
1379                         cdsize = (bcr & 0xffff) * 4;
1380
1381                         // Ape Escape: bcr = 0001 / 0000
1382                         // - fix boot
1383                         if( cdsize == 0 )
1384                         {
1385                                 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1386                                         case MODE_SIZE_2340: cdsize = 2340; break;
1387                                         case MODE_SIZE_2328: cdsize = 2328; break;
1388                                         default:
1389                                         case MODE_SIZE_2048: cdsize = 2048; break;
1390                                 }
1391                         }
1392
1393
1394                         ptr = (u8 *)PSXM(madr);
1395                         if (ptr == NULL) {
1396                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1397                                 break;
1398                         }
1399
1400                         /*
1401                         GS CDX: Enhancement CD crash
1402                         - Setloc 0:0:0
1403                         - CdlPlay
1404                         - Spams DMA3 and gets buffer overrun
1405                         */
1406                         size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1407                         if (size > cdsize)
1408                                 size = cdsize;
1409                         if (size > 0)
1410                         {
1411                                 memcpy(ptr, pTransfer, size);
1412                         }
1413
1414                         psxCpu->Clear(madr, cdsize / 4);
1415                         pTransfer += cdsize;
1416
1417                         if( chcr == 0x11400100 ) {
1418                                 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1419                                 CDRDMA_INT( (cdsize/4) / 4 );
1420                         }
1421                         else if( chcr == 0x11000000 ) {
1422                                 // CDRDMA_INT( (cdsize/4) * 1 );
1423                                 // halted
1424                                 psxRegs.cycle += (cdsize/4) * 24/2;
1425                                 CDRDMA_INT(16);
1426                         }
1427                         return;
1428
1429                 default:
1430                         CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1431                         break;
1432         }
1433
1434         HW_DMA3_CHCR &= SWAP32(~0x01000000);
1435         DMA_INTERRUPT(3);
1436 }
1437
1438 void cdrDmaInterrupt()
1439 {
1440         if (HW_DMA3_CHCR & SWAP32(0x01000000))
1441         {
1442                 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1443                 DMA_INTERRUPT(3);
1444         }
1445 }
1446
1447 static void getCdInfo(void)
1448 {
1449         u8 tmp;
1450
1451         CDR_getTN(cdr.ResultTN);
1452         CDR_getTD(0, cdr.SetSectorEnd);
1453         tmp = cdr.SetSectorEnd[0];
1454         cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1455         cdr.SetSectorEnd[2] = tmp;
1456 }
1457
1458 void cdrReset() {
1459         memset(&cdr, 0, sizeof(cdr));
1460         cdr.CurTrack = 1;
1461         cdr.File = 1;
1462         cdr.Channel = 1;
1463         cdr.Reg2 = 0x1f;
1464         cdr.Stat = NoIntr;
1465         cdr.DriveState = DRIVESTATE_STANDBY;
1466         cdr.StatP = STATUS_ROTATING;
1467         pTransfer = cdr.Transfer;
1468
1469         // BIOS player - default values
1470         cdr.AttenuatorLeftToLeft = 0x80;
1471         cdr.AttenuatorLeftToRight = 0x00;
1472         cdr.AttenuatorRightToLeft = 0x00;
1473         cdr.AttenuatorRightToRight = 0x80;
1474
1475         getCdInfo();
1476 }
1477
1478 int cdrFreeze(void *f, int Mode) {
1479         u32 tmp;
1480         u8 tmpp[3];
1481
1482         if (Mode == 0 && !Config.Cdda)
1483                 CDR_stop();
1484
1485         cdr.freeze_ver = 0x63647202;
1486         gzfreeze(&cdr, sizeof(cdr));
1487
1488         if (Mode == 1) {
1489                 cdr.ParamP = cdr.ParamC;
1490                 tmp = pTransfer - cdr.Transfer;
1491         }
1492
1493         gzfreeze(&tmp, sizeof(tmp));
1494
1495         if (Mode == 0) {
1496                 getCdInfo();
1497
1498                 pTransfer = cdr.Transfer + tmp;
1499
1500                 // read right sub data
1501                 tmpp[0] = btoi(cdr.Prev[0]);
1502                 tmpp[1] = btoi(cdr.Prev[1]);
1503                 tmpp[2] = btoi(cdr.Prev[2]);
1504                 cdr.Prev[0]++;
1505                 ReadTrack(tmpp);
1506
1507                 if (cdr.Play) {
1508                         if (cdr.freeze_ver < 0x63647202)
1509                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1510
1511                         Find_CurTrack(cdr.SetSectorPlay);
1512                         if (!Config.Cdda)
1513                                 CDR_play(cdr.SetSectorPlay);
1514                 }
1515
1516                 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1517                         // old versions did not latch Reg2, have to fixup..
1518                         if (cdr.Reg2 == 0) {
1519                                 SysPrintf("cdrom: fixing up old savestate\n");
1520                                 cdr.Reg2 = 7;
1521                         }
1522                         // also did not save Attenuator..
1523                         if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1524                              | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1525                         {
1526                                 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1527                         }
1528                 }
1529         }
1530
1531         return 0;
1532 }
1533
1534 void LidInterrupt() {
1535         getCdInfo();
1536         StopCdda();
1537         cdrLidSeekInterrupt();
1538 }