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  /* nocash documentation : "Uh, actually, returns error code 40h = Invalid Command...?" */
  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 CdlReset       10
  62 #define CdlMute        11
  63 #define CdlDemute      12
  64 #define CdlSetfilter   13
  65 #define CdlSetmode     14
  66 #define CdlGetparam    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 CdlInit        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",     "CdlReset",    "CdlMute",
  87     "CdlDemute",   "CdlSetfilter", "CdlSetmode", "CdlGetparam",
  88     "CdlGetlocL",  "CdlGetlocP",   "CdlReadT",   "CdlGetTN",
  89     "CdlGetTD",    "CdlSeekL",     "CdlSeekP",   "CdlSetclock",
  90     "CdlGetclock", "CdlTest",      "CdlID",      "CdlReadS",
  91     "CdlInit",     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 CdlNop:
 579                         if (cdr.DriveState != DRIVESTATE_LID_OPEN)
 580                                 cdr.StatP &= ~STATUS_SHELLOPEN;
 581                         no_busy_error = 1;
 582                         break;
 583
 584                 case CdlSetloc:
 585                         break;
 586
 587                 do_CdlPlay:
 588                 case CdlPlay:
 589                         StopCdda();
 590                         if (cdr.Seeked == SEEK_PENDING) {
 591                                 // XXX: wrong, should seek instead..
 592                                 cdr.Seeked = SEEK_DONE;
 593                         }
 594                         if (cdr.SetlocPending) {
 595                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 596                                 cdr.SetlocPending = 0;
 597                                 cdr.m_locationChanged = TRUE;
 598                         }
 599
 600                         // BIOS CD Player
 601                         // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
 602
 603                         if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
 604                                 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
 605                                         cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
 606                         }
 607                         else
 608                         {
 609                                 int track = btoi( cdr.Param[0] );
 610
 611                                 if (track <= cdr.ResultTN[1])
 612                                         cdr.CurTrack = track;
 613
 614                                 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
 615
 616                                 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
 617                                         cdr.SetSectorPlay[0] = cdr.ResultTD[2];
 618                                         cdr.SetSectorPlay[1] = cdr.ResultTD[1];
 619                                         cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 620                                 }
 621                         }
 622
 623                         /*
 624                         Rayman: detect track changes
 625                         - fixes logo freeze
 626
 627                         Twisted Metal 2: skip PREGAP + starting accurate SubQ
 628                         - plays tracks without retry play
 629
 630                         Wild 9: skip PREGAP + starting accurate SubQ
 631                         - plays tracks without retry play
 632                         */
 633                         Find_CurTrack(cdr.SetSectorPlay);
 634                         ReadTrack(cdr.SetSectorPlay);
 635                         cdr.TrackChanged = FALSE;
 636
 637                         if (!Config.Cdda)
 638                                 CDR_play(cdr.SetSectorPlay);
 639
 640                         // Vib Ribbon: gameplay checks flag
 641                         cdr.StatP &= ~STATUS_SEEK;
 642                         cdr.Result[0] = cdr.StatP;
 643
 644                         cdr.StatP |= STATUS_PLAY;
 645
 646                         // BIOS player - set flag again
 647                         cdr.Play = TRUE;
 648
 649                         CDRMISC_INT( cdReadTime );
 650                         start_rotating = 1;
 651                         break;
 652
 653                 case CdlForward:
 654                         // TODO: error 80 if stopped
 655                         cdr.Stat = Complete;
 656
 657                         // GameShark CD Player: Calls 2x + Play 2x
 658                         if( cdr.FastForward == 0 ) cdr.FastForward = 2;
 659                         else cdr.FastForward++;
 660
 661                         cdr.FastBackward = 0;
 662                         break;
 663
 664                 case CdlBackward:
 665                         cdr.Stat = Complete;
 666
 667                         // GameShark CD Player: Calls 2x + Play 2x
 668                         if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
 669                         else cdr.FastBackward++;
 670
 671                         cdr.FastForward = 0;
 672                         break;
 673
 674                 case CdlStandby:
 675                         if (cdr.DriveState != DRIVESTATE_STOPPED) {
 676                                 error = ERROR_INVALIDARG;
 677                                 goto set_error;
 678                         }
 679                         AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
 680                         start_rotating = 1;
 681                         break;
 682
 683                 case CdlStandby + 0x100:
 684                         cdr.Stat = Complete;
 685                         break;
 686
 687                 case CdlStop:
 688                         if (cdr.Play) {
 689                                 // grab time for current track
 690                                 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
 691
 692                                 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
 693                                 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
 694                                 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 695                         }
 696
 697                         StopCdda();
 698                         StopReading();
 699
 700                         delay = 0x800;
 701                         if (cdr.DriveState == DRIVESTATE_STANDBY)
 702                                 delay = cdReadTime * 30 / 2;
 703
 704                         cdr.DriveState = DRIVESTATE_STOPPED;
 705                         AddIrqQueue(CdlStop + 0x100, delay);
 706                         break;
 707
 708                 case CdlStop + 0x100:
 709                         cdr.StatP &= ~STATUS_ROTATING;
 710                         cdr.Result[0] = cdr.StatP;
 711                         cdr.Stat = Complete;
 712                         break;
 713
 714                 case CdlPause:
 715                         /*
 716                         Gundam Battle Assault 2: much slower (*)
 717                         - Fixes boot, gameplay
 718
 719                         Hokuto no Ken 2: slower
 720                         - Fixes intro + subtitles
 721
 722                         InuYasha - Feudal Fairy Tale: slower
 723                         - Fixes battles
 724                         */
 725                         /* Gameblabla - Tightening the timings (as taken from Mednafen). */
 726                         if (cdr.DriveState != DRIVESTATE_STANDBY)
 727                         {
 728                                 delay = 5000;
 729                         }
 730                         else
 731                         {
 732                                 delay = (1124584 + (msf2sec(cdr.SetSectorPlay) * 42596 / (75 * 60))) * ((cdr.Mode & MODE_SPEED) ? 1 : 2);
 733                                 CDRMISC_INT((cdr.Mode & MODE_SPEED) ? cdReadTime / 2 : cdReadTime);
 734                         }
 735                         AddIrqQueue(CdlPause + 0x100, delay);
 736                         cdr.Ctrl |= 0x80;
 737                         break;
 738
 739                 case CdlPause + 0x100:
 740                         cdr.StatP &= ~STATUS_READ;
 741                         cdr.Result[0] = cdr.StatP;
 742                         cdr.Stat = Complete;
 743                         break;
 744
 745                 case CdlReset:
 746                         cdr.Muted = FALSE;
 747                         cdr.Mode = 0x20; /* This fixes This is Football 2, Pooh's Party lockups */
 748                         AddIrqQueue(CdlReset + 0x100, 4100000);
 749                         no_busy_error = 1;
 750                         start_rotating = 1;
 751                         break;
 752
 753                 case CdlReset + 0x100:
 754                         cdr.Stat = Complete;
 755                         break;
 756
 757                 case CdlMute:
 758                         cdr.Muted = TRUE;
 759                         break;
 760
 761                 case CdlDemute:
 762                         cdr.Muted = FALSE;
 763                         break;
 764
 765                 case CdlSetfilter:
 766                         cdr.File = cdr.Param[0];
 767                         cdr.Channel = cdr.Param[1];
 768                         break;
 769
 770                 case CdlSetmode:
 771                         no_busy_error = 1;
 772                         break;
 773
 774                 case CdlGetparam:
 775                         /* Gameblabla : According to mednafen, Result size should be 5 and done this way. */
 776                         SetResultSize(5);
 777                         cdr.Result[1] = cdr.Mode;
 778                         cdr.Result[2] = 0;
 779                         cdr.Result[3] = cdr.File;
 780                         cdr.Result[4] = cdr.Channel;
 781                         no_busy_error = 1;
 782                         break;
 783
 784                 case CdlGetlocL:
 785                         SetResultSize(8);
 786                         memcpy(cdr.Result, cdr.Transfer, 8);
 787                         break;
 788
 789                 case CdlGetlocP:
 790                         SetResultSize(8);
 791                         memcpy(&cdr.Result, &cdr.subq, 8);
 792
 793                         if (!cdr.Play && !cdr.Reading)
 794                                 cdr.Result[1] = 0; // HACK?
 795                         break;
 796
 797                 case CdlReadT: // SetSession?
 798                         // really long
 799                         AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
 800                         start_rotating = 1;
 801                         break;
 802
 803                 case CdlReadT + 0x100:
 804                         cdr.Stat = Complete;
 805                         break;
 806
 807                 case CdlGetTN:
 808                         SetResultSize(3);
 809                         if (CDR_getTN(cdr.ResultTN) == -1) {
 810                                 cdr.Stat = DiskError;
 811                                 cdr.Result[0] |= STATUS_ERROR;
 812                         } else {
 813                                 cdr.Stat = Acknowledge;
 814                                 cdr.Result[1] = itob(cdr.ResultTN[0]);
 815                                 cdr.Result[2] = itob(cdr.ResultTN[1]);
 816                         }
 817                         break;
 818
 819                 case CdlGetTD:
 820                         cdr.Track = btoi(cdr.Param[0]);
 821                         SetResultSize(4);
 822                         if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
 823                                 cdr.Stat = DiskError;
 824                                 cdr.Result[0] |= STATUS_ERROR;
 825                         } else {
 826                                 cdr.Stat = Acknowledge;
 827                                 cdr.Result[0] = cdr.StatP;
 828                                 cdr.Result[1] = itob(cdr.ResultTD[2]);
 829                                 cdr.Result[2] = itob(cdr.ResultTD[1]);
 830                                 /* According to Nocash's documentation, the function doesn't care about ff.
 831                                  * This can be seen also in Mednafen's implementation. */
 832                                 //cdr.Result[3] = itob(cdr.ResultTD[0]);
 833                         }
 834                         break;
 835
 836                 case CdlSeekL:
 837                 case CdlSeekP:
 838                         StopCdda();
 839                         StopReading();
 840                         cdr.StatP |= STATUS_SEEK;
 841
 842                         /*
 843                         Crusaders of Might and Magic = 0.5x-4x
 844                         - fix cutscene speech start
 845
 846                         Eggs of Steel = 2x-?
 847                         - fix new game
 848
 849                         Medievil = ?-4x
 850                         - fix cutscene speech
 851
 852                         Rockman X5 = 0.5-4x
 853                         - fix capcom logo
 854                         */
 855                         CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
 856                         cdr.Seeked = SEEK_PENDING;
 857                         start_rotating = 1;
 858                         break;
 859
 860                 case CdlTest:
 861                         switch (cdr.Param[0]) {
 862                                 case 0x20: // System Controller ROM Version
 863                                         SetResultSize(4);
 864                                         memcpy(cdr.Result, Test20, 4);
 865                                         break;
 866                                 case 0x22:
 867                                         SetResultSize(8);
 868                                         memcpy(cdr.Result, Test22, 4);
 869                                         break;
 870                                 case 0x23: case 0x24:
 871                                         SetResultSize(8);
 872                                         memcpy(cdr.Result, Test23, 4);
 873                                         break;
 874                         }
 875                         no_busy_error = 1;
 876                         break;
 877
 878                 case CdlID:
 879                         AddIrqQueue(CdlID + 0x100, 20480);
 880                         break;
 881
 882                 case CdlID + 0x100:
 883                         SetResultSize(8);
 884                         cdr.Result[0] = cdr.StatP;
 885                         cdr.Result[1] = 0;
 886                         cdr.Result[2] = 0;
 887                         cdr.Result[3] = 0;
 888
 889                         // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
 890                         if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
 891                                 cdr.Result[1] = 0xc0;
 892                         }
 893                         else {
 894                                 if (stat.Type == 2)
 895                                         cdr.Result[1] |= 0x10;
 896                                 if (CdromId[0] == '\0')
 897                                         cdr.Result[1] |= 0x80;
 898                         }
 899                         cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
 900
 901                         strncpy((char *)&cdr.Result[4], "PCSX", 4);
 902                         cdr.Stat = Complete;
 903                         break;
 904
 905                 case CdlInit:
 906                         // yes, it really sets STATUS_SHELLOPEN
 907                         cdr.StatP |= STATUS_SHELLOPEN;
 908                         cdr.DriveState = DRIVESTATE_RESCAN_CD;
 909                         CDRLID_INT(20480);
 910                         no_busy_error = 1;
 911                         start_rotating = 1;
 912                         break;
 913
 914                 case CdlGetQ:
 915                         no_busy_error = 1;
 916                         break;
 917
 918                 case CdlReadToc:
 919                         AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
 920                         no_busy_error = 1;
 921                         start_rotating = 1;
 922                         break;
 923
 924                 case CdlReadToc + 0x100:
 925                         cdr.Stat = Complete;
 926                         no_busy_error = 1;
 927                         break;
 928
 929                 case CdlReadN:
 930                 case CdlReadS:
 931                         if (cdr.SetlocPending) {
 932                                 seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
 933                                 if(seekTime > 1000000) seekTime = 1000000;
 934                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 935                                 cdr.SetlocPending = 0;
 936                                 cdr.m_locationChanged = TRUE;
 937                         }
 938                         Find_CurTrack(cdr.SetSectorPlay);
 939
 940                         if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
 941                                 // Read* acts as play for cdda tracks in cdda mode
 942                                 goto do_CdlPlay;
 943
 944                         cdr.Reading = 1;
 945                         cdr.FirstSector = 1;
 946
 947                         // Fighting Force 2 - update subq time immediately
 948                         // - fixes new game
 949                         ReadTrack(cdr.SetSectorPlay);
 950
 951
 952                         // Crusaders of Might and Magic - update getlocl now
 953                         // - fixes cutscene speech
 954                         {
 955                                 u8 *buf = CDR_getBuffer();
 956                                 if (buf != NULL)
 957                                         memcpy(cdr.Transfer, buf, 8);
 958                         }
 959
 960                         /*
 961                         Duke Nukem: Land of the Babes - seek then delay read for one frame
 962                         - fixes cutscenes
 963                         C-12 - Final Resistance - doesn't like seek
 964                         */
 965
 966                         if (cdr.Seeked != SEEK_DONE) {
 967                                 cdr.StatP |= STATUS_SEEK;
 968                                 cdr.StatP &= ~STATUS_READ;
 969
 970                                 // Crusaders of Might and Magic - use short time
 971                                 // - fix cutscene speech (startup)
 972
 973                                 // ??? - use more accurate seek time later
 974                                 CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1) + seekTime);
 975                         } else {
 976                                 cdr.StatP |= STATUS_READ;
 977                                 cdr.StatP &= ~STATUS_SEEK;
 978
 979                                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
 980                         }
 981
 982                         cdr.Result[0] = cdr.StatP;
 983                         start_rotating = 1;
 984                         break;
 985                 case CdlSync:
 986                 default:
 987                         CDR_LOG_I("Invalid command: %02x\n", Irq);
 988                         error = ERROR_INVALIDCMD;
 989                         // FALLTHROUGH
 990
 991                 set_error:
 992                         SetResultSize(2);
 993                         cdr.Result[0] = cdr.StatP | STATUS_ERROR;
 994                         cdr.Result[1] = error;
 995                         cdr.Stat = DiskError;
 996                         break;
 997         }
 998
 999         if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
1000                 cdr.DriveState = DRIVESTATE_STANDBY;
1001                 cdr.StatP |= STATUS_ROTATING;
1002         }
1003
1004         if (!no_busy_error) {
1005                 switch (cdr.DriveState) {
1006                 case DRIVESTATE_LID_OPEN:
1007                 case DRIVESTATE_RESCAN_CD:
1008                 case DRIVESTATE_PREPARE_CD:
1009                         SetResultSize(2);
1010                         cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1011                         cdr.Result[1] = ERROR_NOTREADY;
1012                         cdr.Stat = DiskError;
1013                         break;
1014                 }
1015         }
1016
1017 finish:
1018         setIrq();
1019         cdr.ParamC = 0;
1020
1021 #ifdef CDR_LOG_CMD_IRQ
1022         {
1023                 int i;
1024                 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1025                         !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1026                 for (i = 0; i < cdr.ResultC; i++)
1027                         SysPrintf("%02x ", cdr.Result[i]);
1028                 SysPrintf("\n");
1029         }
1030 #endif
1031 }
1032
1033 #ifdef HAVE_ARMV7
1034  #define ssat32_to_16(v) \
1035   asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1036 #else
1037  #define ssat32_to_16(v) do { \
1038   if (v < -32768) v = -32768; \
1039   else if (v > 32767) v = 32767; \
1040  } while (0)
1041 #endif
1042
1043 void cdrAttenuate(s16 *buf, int samples, int stereo)
1044 {
1045         int i, l, r;
1046         int ll = cdr.AttenuatorLeftToLeft;
1047         int lr = cdr.AttenuatorLeftToRight;
1048         int rl = cdr.AttenuatorRightToLeft;
1049         int rr = cdr.AttenuatorRightToRight;
1050
1051         if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1052                 return;
1053
1054         if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1055                 return;
1056
1057         if (stereo) {
1058                 for (i = 0; i < samples; i++) {
1059                         l = buf[i * 2];
1060                         r = buf[i * 2 + 1];
1061                         l = (l * ll + r * rl) >> 7;
1062                         r = (r * rr + l * lr) >> 7;
1063                         ssat32_to_16(l);
1064                         ssat32_to_16(r);
1065                         buf[i * 2] = l;
1066                         buf[i * 2 + 1] = r;
1067                 }
1068         }
1069         else {
1070                 for (i = 0; i < samples; i++) {
1071                         l = buf[i];
1072                         l = l * (ll + rl) >> 7;
1073                         //r = r * (rr + lr) >> 7;
1074                         ssat32_to_16(l);
1075                         //ssat32_to_16(r);
1076                         buf[i] = l;
1077                 }
1078         }
1079 }
1080
1081 void cdrReadInterrupt() {
1082         u8 *buf;
1083
1084         if (!cdr.Reading)
1085                 return;
1086
1087         if (cdr.Irq || cdr.Stat) {
1088                 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1089                 CDREAD_INT(0x1000);
1090                 return;
1091         }
1092
1093         cdr.OCUP = 1;
1094         SetResultSize(1);
1095         cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1096         cdr.StatP &= ~STATUS_SEEK;
1097         cdr.Result[0] = cdr.StatP;
1098         cdr.Seeked = SEEK_DONE;
1099
1100         ReadTrack(cdr.SetSectorPlay);
1101
1102         buf = CDR_getBuffer();
1103         if (buf == NULL)
1104                 cdr.RErr = -1;
1105
1106         if (cdr.RErr == -1) {
1107                 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1108                 memset(cdr.Transfer, 0, DATA_SIZE);
1109                 cdr.Stat = DiskError;
1110                 cdr.Result[0] |= STATUS_ERROR;
1111                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1112                 return;
1113         }
1114
1115         memcpy(cdr.Transfer, buf, DATA_SIZE);
1116         CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1117
1118
1119         CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1120
1121         if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1122                 // Firemen 2: Multi-XA files - briefings, cutscenes
1123                 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1124                         cdr.File = cdr.Transfer[4 + 0];
1125                         cdr.Channel = cdr.Transfer[4 + 1];
1126                 }
1127
1128                 /* Gameblabla
1129                  * Skips playing on channel 255.
1130                  * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
1131                  * TODO : Check if this is the proper behaviour.
1132                  * */
1133                 if((cdr.Transfer[4 + 2] & 0x4) &&
1134                          (cdr.Transfer[4 + 1] == cdr.Channel) &&
1135                          (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
1136                         int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1137                         if (!ret) {
1138                                 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1139                                 SPU_playADPCMchannel(&cdr.Xa);
1140                                 cdr.FirstSector = 0;
1141                         }
1142                         else cdr.FirstSector = -1;
1143                 }
1144         }
1145
1146         cdr.SetSectorPlay[2]++;
1147         if (cdr.SetSectorPlay[2] == 75) {
1148                 cdr.SetSectorPlay[2] = 0;
1149                 cdr.SetSectorPlay[1]++;
1150                 if (cdr.SetSectorPlay[1] == 60) {
1151                         cdr.SetSectorPlay[1] = 0;
1152                         cdr.SetSectorPlay[0]++;
1153                 }
1154         }
1155
1156         cdr.Readed = 0;
1157
1158         uint32_t delay = (cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime;
1159         if (cdr.m_locationChanged) {
1160                 CDREAD_INT(delay * 30);
1161                 cdr.m_locationChanged = FALSE;
1162         } else {
1163                 CDREAD_INT(delay);
1164         }
1165
1166         /*
1167         Croc 2: $40 - only FORM1 (*)
1168         Judge Dredd: $C8 - only FORM1 (*)
1169         Sim Theme Park - no adpcm at all (zero)
1170         */
1171
1172         if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1173                 cdr.Stat = DataReady;
1174                 setIrq();
1175         }
1176
1177         // update for CdlGetlocP
1178         ReadTrack(cdr.SetSectorPlay);
1179 }
1180
1181 /*
1182 cdrRead0:
1183         bit 0,1 - mode
1184         bit 2 - unknown
1185         bit 3 - unknown
1186         bit 4 - unknown
1187         bit 5 - 1 result ready
1188         bit 6 - 1 dma ready
1189         bit 7 - 1 command being processed
1190 */
1191
1192 unsigned char cdrRead0(void) {
1193         if (cdr.ResultReady)
1194                 cdr.Ctrl |= 0x20;
1195         else
1196                 cdr.Ctrl &= ~0x20;
1197
1198         if (cdr.OCUP)
1199                 cdr.Ctrl |= 0x40;
1200 //  else
1201 //              cdr.Ctrl &= ~0x40;
1202
1203         // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1204         cdr.Ctrl |= 0x18;
1205
1206         CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1207
1208         return psxHu8(0x1800) = cdr.Ctrl;
1209 }
1210
1211 void cdrWrite0(unsigned char rt) {
1212         CDR_LOG_IO("cdr w0: %02x\n", rt);
1213
1214         cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1215 }
1216
1217 unsigned char cdrRead1(void) {
1218         if ((cdr.ResultP & 0xf) < cdr.ResultC)
1219                 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1220         else
1221                 psxHu8(0x1801) = 0;
1222         cdr.ResultP++;
1223         if (cdr.ResultP == cdr.ResultC)
1224                 cdr.ResultReady = 0;
1225
1226         CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1227
1228         return psxHu8(0x1801);
1229 }
1230
1231 void cdrWrite1(unsigned char rt) {
1232         u8 set_loc[3];
1233         int i;
1234
1235         CDR_LOG_IO("cdr w1: %02x\n", rt);
1236
1237         switch (cdr.Ctrl & 3) {
1238         case 0:
1239                 break;
1240         case 3:
1241                 cdr.AttenuatorRightToRightT = rt;
1242                 return;
1243         default:
1244                 return;
1245         }
1246
1247         cdr.Cmd = rt;
1248         cdr.OCUP = 0;
1249
1250 #ifdef CDR_LOG_CMD_IRQ
1251         SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1252         if (cdr.ParamC) {
1253                 SysPrintf(" Param[%d] = {", cdr.ParamC);
1254                 for (i = 0; i < cdr.ParamC; i++)
1255                         SysPrintf(" %x,", cdr.Param[i]);
1256                 SysPrintf("}\n");
1257         } else {
1258                 SysPrintf("\n");
1259         }
1260 #endif
1261
1262         cdr.ResultReady = 0;
1263         cdr.Ctrl |= 0x80;
1264         // cdr.Stat = NoIntr;
1265         AddIrqQueue(cdr.Cmd, 0x800);
1266
1267         switch (cdr.Cmd) {
1268         case CdlSetloc:
1269                 CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
1270
1271                 // MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
1272                 if (((cdr.Param[0] & 0x0F) > 0x09) || (cdr.Param[0] > 0x99) || ((cdr.Param[1] & 0x0F) > 0x09) || (cdr.Param[1] >= 0x60) || ((cdr.Param[2] & 0x0F) > 0x09) || (cdr.Param[2] >= 0x75))
1273                 {
1274                         CDR_LOG("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
1275                 }
1276                 else
1277                 {
1278                         for (i = 0; i < 3; i++)
1279                         {
1280                                 set_loc[i] = btoi(cdr.Param[i]);
1281                         }
1282
1283                         i = msf2sec(cdr.SetSectorPlay);
1284                         i = abs(i - msf2sec(set_loc));
1285                         if (i > 16)
1286                                 cdr.Seeked = SEEK_PENDING;
1287
1288                         memcpy(cdr.SetSector, set_loc, 3);
1289                         cdr.SetSector[3] = 0;
1290                         cdr.SetlocPending = 1;
1291                 }
1292                 break;
1293
1294         case CdlReadN:
1295         case CdlReadS:
1296         case CdlPause:
1297                 StopCdda();
1298                 StopReading();
1299                 break;
1300
1301         case CdlInit:
1302         case CdlReset:
1303                 cdr.Seeked = SEEK_DONE;
1304                 StopCdda();
1305                 StopReading();
1306                 break;
1307
1308         case CdlSetmode:
1309                 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1310
1311                 cdr.Mode = cdr.Param[0];
1312
1313                 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1314                 // - fixes choppy movie sound
1315                 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1316                         StopCdda();
1317                 break;
1318         }
1319 }
1320
1321 unsigned char cdrRead2(void) {
1322         unsigned char ret;
1323
1324         if (cdr.Readed == 0) {
1325                 ret = 0;
1326         } else {
1327                 ret = *pTransfer++;
1328         }
1329
1330         CDR_LOG_IO("cdr r2: %02x\n", ret);
1331         return ret;
1332 }
1333
1334 void cdrWrite2(unsigned char rt) {
1335         CDR_LOG_IO("cdr w2: %02x\n", rt);
1336
1337         switch (cdr.Ctrl & 3) {
1338         case 0:
1339                 if (cdr.ParamC < 8) // FIXME: size and wrapping
1340                         cdr.Param[cdr.ParamC++] = rt;
1341                 return;
1342         case 1:
1343                 cdr.Reg2 = rt;
1344                 setIrq();
1345                 return;
1346         case 2:
1347                 cdr.AttenuatorLeftToLeftT = rt;
1348                 return;
1349         case 3:
1350                 cdr.AttenuatorRightToLeftT = rt;
1351                 return;
1352         }
1353 }
1354
1355 unsigned char cdrRead3(void) {
1356         if (cdr.Ctrl & 0x1)
1357                 psxHu8(0x1803) = cdr.Stat | 0xE0;
1358         else
1359                 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1360
1361         CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1362         return psxHu8(0x1803);
1363 }
1364
1365 void cdrWrite3(unsigned char rt) {
1366         CDR_LOG_IO("cdr w3: %02x\n", rt);
1367
1368         switch (cdr.Ctrl & 3) {
1369         case 0:
1370                 break; // transfer
1371         case 1:
1372                 cdr.Stat &= ~rt;
1373
1374                 if (rt & 0x40)
1375                         cdr.ParamC = 0;
1376                 return;
1377         case 2:
1378                 cdr.AttenuatorLeftToRightT = rt;
1379                 return;
1380         case 3:
1381                 if (rt & 0x20) {
1382                         memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1383                         CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1384                                 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1385                                 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1386                 }
1387                 return;
1388         }
1389
1390         if ((rt & 0x80) && cdr.Readed == 0) {
1391                 cdr.Readed = 1;
1392                 pTransfer = cdr.Transfer;
1393
1394                 switch (cdr.Mode & 0x30) {
1395                         case MODE_SIZE_2328:
1396                         case 0x00:
1397                                 pTransfer += 12;
1398                                 break;
1399
1400                         case MODE_SIZE_2340:
1401                                 pTransfer += 0;
1402                                 break;
1403
1404                         default:
1405                                 break;
1406                 }
1407         }
1408 }
1409
1410 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1411         u32 cdsize;
1412         int size;
1413         u8 *ptr;
1414
1415         CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1416
1417         switch (chcr) {
1418                 case 0x11000000:
1419                 case 0x11400100:
1420                         if (cdr.Readed == 0) {
1421                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1422                                 break;
1423                         }
1424
1425                         cdsize = (bcr & 0xffff) * 4;
1426
1427                         // Ape Escape: bcr = 0001 / 0000
1428                         // - fix boot
1429                         if( cdsize == 0 )
1430                         {
1431                                 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1432                                         case MODE_SIZE_2340: cdsize = 2340; break;
1433                                         case MODE_SIZE_2328: cdsize = 2328; break;
1434                                         default:
1435                                         case MODE_SIZE_2048: cdsize = 2048; break;
1436                                 }
1437                         }
1438
1439
1440                         ptr = (u8 *)PSXM(madr);
1441                         if (ptr == NULL) {
1442                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1443                                 break;
1444                         }
1445
1446                         /*
1447                         GS CDX: Enhancement CD crash
1448                         - Setloc 0:0:0
1449                         - CdlPlay
1450                         - Spams DMA3 and gets buffer overrun
1451                         */
1452                         size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1453                         if (size > cdsize)
1454                                 size = cdsize;
1455                         if (size > 0)
1456                         {
1457                                 memcpy(ptr, pTransfer, size);
1458                         }
1459
1460                         psxCpu->Clear(madr, cdsize / 4);
1461                         pTransfer += cdsize;
1462
1463                         if( chcr == 0x11400100 ) {
1464                                 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1465                                 CDRDMA_INT( (cdsize/4) / 4 );
1466                         }
1467                         else if( chcr == 0x11000000 ) {
1468                                 // CDRDMA_INT( (cdsize/4) * 1 );
1469                                 // halted
1470                                 psxRegs.cycle += (cdsize/4) * 24/2;
1471                                 CDRDMA_INT(16);
1472                         }
1473                         return;
1474
1475                 default:
1476                         CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1477                         break;
1478         }
1479
1480         HW_DMA3_CHCR &= SWAP32(~0x01000000);
1481         DMA_INTERRUPT(3);
1482 }
1483
1484 void cdrDmaInterrupt()
1485 {
1486         if (HW_DMA3_CHCR & SWAP32(0x01000000))
1487         {
1488                 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1489                 DMA_INTERRUPT(3);
1490         }
1491 }
1492
1493 static void getCdInfo(void)
1494 {
1495         u8 tmp;
1496
1497         CDR_getTN(cdr.ResultTN);
1498         CDR_getTD(0, cdr.SetSectorEnd);
1499         tmp = cdr.SetSectorEnd[0];
1500         cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1501         cdr.SetSectorEnd[2] = tmp;
1502 }
1503
1504 void cdrReset() {
1505         memset(&cdr, 0, sizeof(cdr));
1506         cdr.CurTrack = 1;
1507         cdr.File = 1;
1508         cdr.Channel = 1;
1509         cdr.Reg2 = 0x1f;
1510         cdr.Stat = NoIntr;
1511         cdr.DriveState = DRIVESTATE_STANDBY;
1512         cdr.StatP = STATUS_ROTATING;
1513         pTransfer = cdr.Transfer;
1514         cdr.SetlocPending = 0;
1515         cdr.m_locationChanged = FALSE;
1516
1517         // BIOS player - default values
1518         cdr.AttenuatorLeftToLeft = 0x80;
1519         cdr.AttenuatorLeftToRight = 0x00;
1520         cdr.AttenuatorRightToLeft = 0x00;
1521         cdr.AttenuatorRightToRight = 0x80;
1522
1523         getCdInfo();
1524 }
1525
1526 int cdrFreeze(void *f, int Mode) {
1527         u32 tmp;
1528         u8 tmpp[3];
1529
1530         if (Mode == 0 && !Config.Cdda)
1531                 CDR_stop();
1532
1533         cdr.freeze_ver = 0x63647202;
1534         gzfreeze(&cdr, sizeof(cdr));
1535
1536         if (Mode == 1) {
1537                 cdr.ParamP = cdr.ParamC;
1538                 tmp = pTransfer - cdr.Transfer;
1539         }
1540
1541         gzfreeze(&tmp, sizeof(tmp));
1542
1543         if (Mode == 0) {
1544                 getCdInfo();
1545
1546                 pTransfer = cdr.Transfer + tmp;
1547
1548                 // read right sub data
1549                 tmpp[0] = btoi(cdr.Prev[0]);
1550                 tmpp[1] = btoi(cdr.Prev[1]);
1551                 tmpp[2] = btoi(cdr.Prev[2]);
1552                 cdr.Prev[0]++;
1553                 ReadTrack(tmpp);
1554
1555                 if (cdr.Play) {
1556                         if (cdr.freeze_ver < 0x63647202)
1557                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1558
1559                         Find_CurTrack(cdr.SetSectorPlay);
1560                         if (!Config.Cdda)
1561                                 CDR_play(cdr.SetSectorPlay);
1562                 }
1563
1564                 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1565                         // old versions did not latch Reg2, have to fixup..
1566                         if (cdr.Reg2 == 0) {
1567                                 SysPrintf("cdrom: fixing up old savestate\n");
1568                                 cdr.Reg2 = 7;
1569                         }
1570                         // also did not save Attenuator..
1571                         if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1572                              | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1573                         {
1574                                 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1575                         }
1576                 }
1577         }
1578
1579         return 0;
1580 }
1581
1582 void LidInterrupt() {
1583         getCdInfo();
1584         StopCdda();
1585         cdrLidSeekInterrupt();
1586 }