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
  28 /* logging */
  29 #if 0
  30 #define CDR_LOG SysPrintf
  31 #else
  32 #define CDR_LOG(...)
  33 #endif
  34 #if 0
  35 #define CDR_LOG_I SysPrintf
  36 #else
  37 #define CDR_LOG_I(...)
  38 #endif
  39 #if 0
  40 #define CDR_LOG_IO SysPrintf
  41 #else
  42 #define CDR_LOG_IO(...)
  43 #endif
  44 //#define CDR_LOG_CMD_IRQ
  45
  46 cdrStruct cdr;
  47 static unsigned char *pTransfer;
  48
  49 /* CD-ROM magic numbers */
  50 #define CdlSync        0
  51 #define CdlNop         1
  52 #define CdlSetloc      2
  53 #define CdlPlay        3
  54 #define CdlForward     4
  55 #define CdlBackward    5
  56 #define CdlReadN       6
  57 #define CdlStandby     7
  58 #define CdlStop        8
  59 #define CdlPause       9
  60 #define CdlInit        10
  61 #define CdlMute        11
  62 #define CdlDemute      12
  63 #define CdlSetfilter   13
  64 #define CdlSetmode     14
  65 #define CdlGetmode     15
  66 #define CdlGetlocL     16
  67 #define CdlGetlocP     17
  68 #define CdlReadT       18
  69 #define CdlGetTN       19
  70 #define CdlGetTD       20
  71 #define CdlSeekL       21
  72 #define CdlSeekP       22
  73 #define CdlSetclock    23
  74 #define CdlGetclock    24
  75 #define CdlTest        25
  76 #define CdlID          26
  77 #define CdlReadS       27
  78 #define CdlReset       28
  79 #define CdlGetQ        29
  80 #define CdlReadToc     30
  81
  82 char *CmdName[0x100]= {
  83     "CdlSync",     "CdlNop",       "CdlSetloc",  "CdlPlay",
  84     "CdlForward",  "CdlBackward",  "CdlReadN",   "CdlStandby",
  85     "CdlStop",     "CdlPause",     "CdlInit",    "CdlMute",
  86     "CdlDemute",   "CdlSetfilter", "CdlSetmode", "CdlGetmode",
  87     "CdlGetlocL",  "CdlGetlocP",   "CdlReadT",   "CdlGetTN",
  88     "CdlGetTD",    "CdlSeekL",     "CdlSeekP",   "CdlSetclock",
  89     "CdlGetclock", "CdlTest",      "CdlID",      "CdlReadS",
  90     "CdlReset",    NULL,           "CDlReadToc", NULL
  91 };
  92
  93 unsigned char Test04[] = { 0 };
  94 unsigned char Test05[] = { 0 };
  95 unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
  96 unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
  97 unsigned char Test23[] = { 0x43, 0x58, 0x44, 0x32, 0x39 ,0x34, 0x30, 0x51 };
  98
  99 // cdr.Stat:
 100 #define NoIntr          0
 101 #define DataReady       1
 102 #define Complete        2
 103 #define Acknowledge     3
 104 #define DataEnd         4
 105 #define DiskError       5
 106
 107 /* Modes flags */
 108 #define MODE_SPEED       (1<<7) // 0x80
 109 #define MODE_STRSND      (1<<6) // 0x40 ADPCM on/off
 110 #define MODE_SIZE_2340   (1<<5) // 0x20
 111 #define MODE_SIZE_2328   (1<<4) // 0x10
 112 #define MODE_SIZE_2048   (0<<4) // 0x00
 113 #define MODE_SF          (1<<3) // 0x08 channel on/off
 114 #define MODE_REPORT      (1<<2) // 0x04
 115 #define MODE_AUTOPAUSE   (1<<1) // 0x02
 116 #define MODE_CDDA        (1<<0) // 0x01
 117
 118 /* Status flags */
 119 #define STATUS_PLAY      (1<<7) // 0x80
 120 #define STATUS_SEEK      (1<<6) // 0x40
 121 #define STATUS_READ      (1<<5) // 0x20
 122 #define STATUS_SHELLOPEN (1<<4) // 0x10
 123 #define STATUS_UNKNOWN3  (1<<3) // 0x08
 124 #define STATUS_UNKNOWN2  (1<<2) // 0x04
 125 #define STATUS_ROTATING  (1<<1) // 0x02
 126 #define STATUS_ERROR     (1<<0) // 0x01
 127
 128 /* Errors */
 129 #define ERROR_NOT_READY  (1<<7) // 0x80
 130 #define ERROR_INVALIDCMD (1<<6) // 0x40
 131 #define ERROR_INVALIDARG (1<<5) // 0x20
 132
 133 // 1x = 75 sectors per second
 134 // PSXCLK = 1 sec in the ps
 135 // so (PSXCLK / 75) = cdr read time (linuzappz)
 136 #define cdReadTime (PSXCLK / 75)
 137
 138 enum drive_state {
 139         DRIVESTATE_STANDBY = 0,
 140         DRIVESTATE_LID_OPEN,
 141         DRIVESTATE_RESCAN_CD,
 142         DRIVESTATE_PREPARE_CD,
 143         DRIVESTATE_STOPPED,
 144 };
 145
 146 // for cdr.Seeked
 147 enum seeked_state {
 148         SEEK_PENDING = 0,
 149         SEEK_DONE = 1,
 150 };
 151
 152 static struct CdrStat stat;
 153
 154 static unsigned int msf2sec(const u8 *msf) {
 155         return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
 156 }
 157
 158 // for that weird psemu API..
 159 static unsigned int fsm2sec(const u8 *msf) {
 160         return ((msf[2] * 60 + msf[1]) * 75) + msf[0];
 161 }
 162
 163 static void sec2msf(unsigned int s, u8 *msf) {
 164         msf[0] = s / 75 / 60;
 165         s = s - msf[0] * 75 * 60;
 166         msf[1] = s / 75;
 167         s = s - msf[1] * 75;
 168         msf[2] = s;
 169 }
 170
 171 // cdrInterrupt
 172 #define CDR_INT(eCycle) { \
 173         psxRegs.interrupt |= (1 << PSXINT_CDR); \
 174         psxRegs.intCycle[PSXINT_CDR].cycle = eCycle; \
 175         psxRegs.intCycle[PSXINT_CDR].sCycle = psxRegs.cycle; \
 176         new_dyna_set_event(PSXINT_CDR, eCycle); \
 177 }
 178
 179 // cdrReadInterrupt
 180 #define CDREAD_INT(eCycle) { \
 181         psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
 182         psxRegs.intCycle[PSXINT_CDREAD].cycle = eCycle; \
 183         psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
 184         new_dyna_set_event(PSXINT_CDREAD, eCycle); \
 185 }
 186
 187 // cdrLidSeekInterrupt
 188 #define CDRLID_INT(eCycle) { \
 189         psxRegs.interrupt |= (1 << PSXINT_CDRLID); \
 190         psxRegs.intCycle[PSXINT_CDRLID].cycle = eCycle; \
 191         psxRegs.intCycle[PSXINT_CDRLID].sCycle = psxRegs.cycle; \
 192         new_dyna_set_event(PSXINT_CDRLID, eCycle); \
 193 }
 194
 195 // cdrPlayInterrupt
 196 #define CDRMISC_INT(eCycle) { \
 197         psxRegs.interrupt |= (1 << PSXINT_CDRPLAY); \
 198         psxRegs.intCycle[PSXINT_CDRPLAY].cycle = eCycle; \
 199         psxRegs.intCycle[PSXINT_CDRPLAY].sCycle = psxRegs.cycle; \
 200         new_dyna_set_event(PSXINT_CDRPLAY, eCycle); \
 201 }
 202
 203 #define StopReading() { \
 204         if (cdr.Reading) { \
 205                 cdr.Reading = 0; \
 206                 psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
 207         } \
 208         cdr.StatP &= ~(STATUS_READ|STATUS_SEEK);\
 209 }
 210
 211 #define StopCdda() { \
 212         if (cdr.Play) { \
 213                 if (!Config.Cdda) CDR_stop(); \
 214                 cdr.StatP &= ~STATUS_PLAY; \
 215                 cdr.Play = FALSE; \
 216                 cdr.FastForward = 0; \
 217                 cdr.FastBackward = 0; \
 218                 /*SPU_registerCallback( SPUirq );*/ \
 219         } \
 220 }
 221
 222 #define SetResultSize(size) { \
 223         cdr.ResultP = 0; \
 224         cdr.ResultC = size; \
 225         cdr.ResultReady = 1; \
 226 }
 227
 228 static void setIrq(void)
 229 {
 230         if (cdr.Stat & cdr.Reg2)
 231                 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
 232 }
 233
 234 // timing used in this function was taken from tests on real hardware
 235 // (yes it's slow, but you probably don't want to modify it)
 236 void cdrLidSeekInterrupt()
 237 {
 238         switch (cdr.DriveState) {
 239         default:
 240         case DRIVESTATE_STANDBY:
 241                 cdr.StatP &= ~STATUS_SEEK;
 242
 243                 if (CDR_getStatus(&stat) == -1)
 244                         return;
 245
 246                 if (stat.Status & STATUS_SHELLOPEN)
 247                 {
 248                         StopCdda();
 249                         cdr.DriveState = DRIVESTATE_LID_OPEN;
 250                         CDRLID_INT(0x800);
 251                 }
 252                 break;
 253
 254         case DRIVESTATE_LID_OPEN:
 255                 if (CDR_getStatus(&stat) == -1)
 256                         stat.Status &= ~STATUS_SHELLOPEN;
 257
 258                 // 02, 12, 10
 259                 if (!(cdr.StatP & STATUS_SHELLOPEN)) {
 260                         StopReading();
 261                         cdr.StatP |= STATUS_SHELLOPEN;
 262
 263                         // could generate error irq here, but real hardware
 264                         // only sometimes does that
 265                         // (not done when lots of commands are sent?)
 266
 267                         CDRLID_INT(cdReadTime * 30);
 268                         break;
 269                 }
 270                 else if (cdr.StatP & STATUS_ROTATING) {
 271                         cdr.StatP &= ~STATUS_ROTATING;
 272                 }
 273                 else if (!(stat.Status & STATUS_SHELLOPEN)) {
 274                         // closed now
 275                         CheckCdrom();
 276
 277                         // cdr.StatP STATUS_SHELLOPEN is "sticky"
 278                         // and is only cleared by CdlNop
 279
 280                         cdr.DriveState = DRIVESTATE_RESCAN_CD;
 281                         CDRLID_INT(cdReadTime * 105);
 282                         break;
 283                 }
 284
 285                 // recheck for close
 286                 CDRLID_INT(cdReadTime * 3);
 287                 break;
 288
 289         case DRIVESTATE_RESCAN_CD:
 290                 cdr.StatP |= STATUS_ROTATING;
 291                 cdr.DriveState = DRIVESTATE_PREPARE_CD;
 292
 293                 // this is very long on real hardware, over 6 seconds
 294                 // make it a bit faster here...
 295                 CDRLID_INT(cdReadTime * 150);
 296                 break;
 297
 298         case DRIVESTATE_PREPARE_CD:
 299                 cdr.StatP |= STATUS_SEEK;
 300
 301                 cdr.DriveState = DRIVESTATE_STANDBY;
 302                 CDRLID_INT(cdReadTime * 26);
 303                 break;
 304         }
 305 }
 306
 307 static void Find_CurTrack(const u8 *time)
 308 {
 309         int current, sect;
 310
 311         current = msf2sec(time);
 312
 313         for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
 314                 CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
 315                 sect = fsm2sec(cdr.ResultTD);
 316                 if (sect - current >= 150)
 317                         break;
 318         }
 319 }
 320
 321 static void generate_subq(const u8 *time)
 322 {
 323         unsigned char start[3], next[3];
 324         unsigned int this_s, start_s, next_s, pregap;
 325         int relative_s;
 326
 327         CDR_getTD(cdr.CurTrack, start);
 328         if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
 329                 pregap = 150;
 330                 CDR_getTD(cdr.CurTrack + 1, next);
 331         }
 332         else {
 333                 // last track - cd size
 334                 pregap = 0;
 335                 next[0] = cdr.SetSectorEnd[2];
 336                 next[1] = cdr.SetSectorEnd[1];
 337                 next[2] = cdr.SetSectorEnd[0];
 338         }
 339
 340         this_s = msf2sec(time);
 341         start_s = fsm2sec(start);
 342         next_s = fsm2sec(next);
 343
 344         cdr.TrackChanged = FALSE;
 345
 346         if (next_s - this_s < pregap) {
 347                 cdr.TrackChanged = TRUE;
 348                 cdr.CurTrack++;
 349                 start_s = next_s;
 350         }
 351
 352         cdr.subq.Index = 1;
 353
 354         relative_s = this_s - start_s;
 355         if (relative_s < 0) {
 356                 cdr.subq.Index = 0;
 357                 relative_s = -relative_s;
 358         }
 359         sec2msf(relative_s, cdr.subq.Relative);
 360
 361         cdr.subq.Track = itob(cdr.CurTrack);
 362         cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
 363         cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
 364         cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
 365         cdr.subq.Absolute[0] = itob(time[0]);
 366         cdr.subq.Absolute[1] = itob(time[1]);
 367         cdr.subq.Absolute[2] = itob(time[2]);
 368 }
 369
 370 static void ReadTrack(const u8 *time) {
 371         unsigned char tmp[3];
 372         struct SubQ *subq;
 373         u16 crc;
 374
 375         tmp[0] = itob(time[0]);
 376         tmp[1] = itob(time[1]);
 377         tmp[2] = itob(time[2]);
 378
 379         if (memcmp(cdr.Prev, tmp, 3) == 0)
 380                 return;
 381
 382         CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
 383
 384         cdr.RErr = CDR_readTrack(tmp);
 385         memcpy(cdr.Prev, tmp, 3);
 386
 387         if (CheckSBI(time))
 388                 return;
 389
 390         subq = (struct SubQ *)CDR_getBufferSub();
 391         if (subq != NULL && cdr.CurTrack == 1) {
 392                 crc = calcCrc((u8 *)subq + 12, 10);
 393                 if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
 394                         cdr.subq.Track = subq->TrackNumber;
 395                         cdr.subq.Index = subq->IndexNumber;
 396                         memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
 397                         memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
 398                 }
 399                 else {
 400                         CDR_LOG_I("subq bad crc @%02x:%02x:%02x\n",
 401                                 tmp[0], tmp[1], tmp[2]);
 402                 }
 403         }
 404         else {
 405                 generate_subq(time);
 406         }
 407
 408         CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
 409                 cdr.subq.Track, cdr.subq.Index,
 410                 cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
 411                 cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
 412 }
 413
 414 static void AddIrqQueue(unsigned short irq, unsigned long ecycle) {
 415         if (cdr.Irq != 0) {
 416                 if (irq == cdr.Irq || irq + 0x100 == cdr.Irq) {
 417                         cdr.IrqRepeated = 1;
 418                         CDR_INT(ecycle);
 419                         return;
 420                 }
 421
 422                 CDR_LOG_I("cdr: override cmd %02x -> %02x\n", cdr.Irq, irq);
 423         }
 424
 425         cdr.Irq = irq;
 426         cdr.eCycle = ecycle;
 427
 428         CDR_INT(ecycle);
 429 }
 430
 431 static void cdrPlayInterrupt_Autopause()
 432 {
 433         if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
 434                 CDR_LOG( "CDDA STOP\n" );
 435
 436                 // Magic the Gathering
 437                 // - looping territory cdda
 438
 439                 // ...?
 440                 //cdr.ResultReady = 1;
 441                 //cdr.Stat = DataReady;
 442                 cdr.Stat = DataEnd;
 443                 setIrq();
 444
 445                 StopCdda();
 446         }
 447         else if (cdr.Mode & MODE_REPORT) {
 448
 449                 cdr.Result[0] = cdr.StatP;
 450                 cdr.Result[1] = cdr.subq.Track;
 451                 cdr.Result[2] = cdr.subq.Index;
 452
 453                 if (cdr.subq.Absolute[2] & 0x10) {
 454                         cdr.Result[3] = cdr.subq.Relative[0];
 455                         cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
 456                         cdr.Result[5] = cdr.subq.Relative[2];
 457                 }
 458                 else {
 459                         cdr.Result[3] = cdr.subq.Absolute[0];
 460                         cdr.Result[4] = cdr.subq.Absolute[1];
 461                         cdr.Result[5] = cdr.subq.Absolute[2];
 462                 }
 463
 464                 cdr.Result[6] = 0;
 465                 cdr.Result[7] = 0;
 466
 467                 // Rayman: Logo freeze (resultready + dataready)
 468                 cdr.ResultReady = 1;
 469                 cdr.Stat = DataReady;
 470
 471                 SetResultSize(8);
 472                 setIrq();
 473         }
 474 }
 475
 476 // also handles seek
 477 void cdrPlayInterrupt()
 478 {
 479         if (cdr.Seeked == SEEK_PENDING) {
 480                 if (cdr.Stat) {
 481                         CDR_LOG_I("cdrom: seek stat hack\n");
 482                         CDRMISC_INT(0x1000);
 483                         return;
 484                 }
 485                 SetResultSize(1);
 486                 cdr.StatP |= STATUS_ROTATING;
 487                 cdr.StatP &= ~STATUS_SEEK;
 488                 cdr.Result[0] = cdr.StatP;
 489                 cdr.Seeked = SEEK_DONE;
 490                 if (cdr.Irq == 0) {
 491                         cdr.Stat = Complete;
 492                         setIrq();
 493                 }
 494
 495                 if (cdr.SetlocPending) {
 496                         memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 497                         cdr.SetlocPending = 0;
 498                 }
 499                 Find_CurTrack(cdr.SetSectorPlay);
 500                 ReadTrack(cdr.SetSectorPlay);
 501                 cdr.TrackChanged = FALSE;
 502         }
 503
 504         if (!cdr.Play) return;
 505
 506         CDR_LOG( "CDDA - %d:%d:%d\n",
 507                 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
 508
 509         if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
 510                 StopCdda();
 511                 cdr.TrackChanged = TRUE;
 512         }
 513
 514         if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
 515                 cdrPlayInterrupt_Autopause();
 516
 517         if (!cdr.Play) return;
 518
 519         cdr.SetSectorPlay[2]++;
 520         if (cdr.SetSectorPlay[2] == 75) {
 521                 cdr.SetSectorPlay[2] = 0;
 522                 cdr.SetSectorPlay[1]++;
 523                 if (cdr.SetSectorPlay[1] == 60) {
 524                         cdr.SetSectorPlay[1] = 0;
 525                         cdr.SetSectorPlay[0]++;
 526                 }
 527         }
 528
 529         CDRMISC_INT(cdReadTime);
 530
 531         // update for CdlGetlocP/autopause
 532         generate_subq(cdr.SetSectorPlay);
 533 }
 534
 535 void cdrInterrupt() {
 536         u16 Irq = cdr.Irq;
 537         int no_busy_error = 0;
 538         int start_rotating = 0;
 539         int error = 0;
 540         int delay;
 541
 542         // Reschedule IRQ
 543         if (cdr.Stat) {
 544                 CDR_LOG_I("cdrom: stat hack: %02x %x\n", cdr.Irq, cdr.Stat);
 545                 CDR_INT(0x1000);
 546                 return;
 547         }
 548
 549         cdr.Ctrl &= ~0x80;
 550
 551         // default response
 552         SetResultSize(1);
 553         cdr.Result[0] = cdr.StatP;
 554         cdr.Stat = Acknowledge;
 555
 556         if (cdr.IrqRepeated) {
 557                 cdr.IrqRepeated = 0;
 558                 if (cdr.eCycle > psxRegs.cycle) {
 559                         CDR_INT(cdr.eCycle);
 560                         goto finish;
 561                 }
 562         }
 563
 564         cdr.Irq = 0;
 565
 566         switch (Irq) {
 567                 case CdlSync:
 568                         // TOOD: sometimes/always return error?
 569                         break;
 570
 571                 case CdlNop:
 572                         if (cdr.DriveState != DRIVESTATE_LID_OPEN)
 573                                 cdr.StatP &= ~STATUS_SHELLOPEN;
 574                         no_busy_error = 1;
 575                         break;
 576
 577                 case CdlSetloc:
 578                         break;
 579
 580                 do_CdlPlay:
 581                 case CdlPlay:
 582                         StopCdda();
 583                         if (cdr.Seeked == SEEK_PENDING) {
 584                                 // XXX: wrong, should seek instead..
 585                                 cdr.Seeked = SEEK_DONE;
 586                         }
 587                         if (cdr.SetlocPending) {
 588                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 589                                 cdr.SetlocPending = 0;
 590                         }
 591
 592                         // BIOS CD Player
 593                         // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
 594
 595                         if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
 596                                 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
 597                                         cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
 598                         }
 599                         else
 600                         {
 601                                 int track = btoi( cdr.Param[0] );
 602
 603                                 if (track <= cdr.ResultTN[1])
 604                                         cdr.CurTrack = track;
 605
 606                                 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
 607
 608                                 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
 609                                         cdr.SetSectorPlay[0] = cdr.ResultTD[2];
 610                                         cdr.SetSectorPlay[1] = cdr.ResultTD[1];
 611                                         cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 612                                 }
 613                         }
 614
 615                         /*
 616                         Rayman: detect track changes
 617                         - fixes logo freeze
 618
 619                         Twisted Metal 2: skip PREGAP + starting accurate SubQ
 620                         - plays tracks without retry play
 621
 622                         Wild 9: skip PREGAP + starting accurate SubQ
 623                         - plays tracks without retry play
 624                         */
 625                         Find_CurTrack(cdr.SetSectorPlay);
 626                         ReadTrack(cdr.SetSectorPlay);
 627                         cdr.TrackChanged = FALSE;
 628
 629                         if (!Config.Cdda)
 630                                 CDR_play(cdr.SetSectorPlay);
 631
 632                         // Vib Ribbon: gameplay checks flag
 633                         cdr.StatP &= ~STATUS_SEEK;
 634                         cdr.Result[0] = cdr.StatP;
 635
 636                         cdr.StatP |= STATUS_PLAY;
 637
 638                         // BIOS player - set flag again
 639                         cdr.Play = TRUE;
 640
 641                         CDRMISC_INT( cdReadTime );
 642                         start_rotating = 1;
 643                         break;
 644
 645                 case CdlForward:
 646                         // TODO: error 80 if stopped
 647                         cdr.Stat = Complete;
 648
 649                         // GameShark CD Player: Calls 2x + Play 2x
 650                         if( cdr.FastForward == 0 ) cdr.FastForward = 2;
 651                         else cdr.FastForward++;
 652
 653                         cdr.FastBackward = 0;
 654                         break;
 655
 656                 case CdlBackward:
 657                         cdr.Stat = Complete;
 658
 659                         // GameShark CD Player: Calls 2x + Play 2x
 660                         if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
 661                         else cdr.FastBackward++;
 662
 663                         cdr.FastForward = 0;
 664                         break;
 665
 666                 case CdlStandby:
 667                         if (cdr.DriveState != DRIVESTATE_STOPPED) {
 668                                 error = ERROR_INVALIDARG;
 669                                 goto set_error;
 670                         }
 671                         AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
 672                         start_rotating = 1;
 673                         break;
 674
 675                 case CdlStandby + 0x100:
 676                         cdr.Stat = Complete;
 677                         break;
 678
 679                 case CdlStop:
 680                         if (cdr.Play) {
 681                                 // grab time for current track
 682                                 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
 683
 684                                 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
 685                                 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
 686                                 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 687                         }
 688
 689                         StopCdda();
 690                         StopReading();
 691
 692                         delay = 0x800;
 693                         if (cdr.DriveState == DRIVESTATE_STANDBY)
 694                                 delay = cdReadTime * 30 / 2;
 695
 696                         cdr.DriveState = DRIVESTATE_STOPPED;
 697                         AddIrqQueue(CdlStop + 0x100, delay);
 698                         break;
 699
 700                 case CdlStop + 0x100:
 701                         cdr.StatP &= ~STATUS_ROTATING;
 702                         cdr.Result[0] = cdr.StatP;
 703                         cdr.Stat = Complete;
 704                         break;
 705
 706                 case CdlPause:
 707                         /*
 708                         Gundam Battle Assault 2: much slower (*)
 709                         - Fixes boot, gameplay
 710
 711                         Hokuto no Ken 2: slower
 712                         - Fixes intro + subtitles
 713
 714                         InuYasha - Feudal Fairy Tale: slower
 715                         - Fixes battles
 716                         */
 717                         AddIrqQueue(CdlPause + 0x100, cdReadTime * 3);
 718                         cdr.Ctrl |= 0x80;
 719                         break;
 720
 721                 case CdlPause + 0x100:
 722                         cdr.StatP &= ~STATUS_READ;
 723                         cdr.Result[0] = cdr.StatP;
 724                         cdr.Stat = Complete;
 725                         break;
 726
 727                 case CdlInit:
 728                         AddIrqQueue(CdlInit + 0x100, cdReadTime * 6);
 729                         no_busy_error = 1;
 730                         start_rotating = 1;
 731                         break;
 732
 733                 case CdlInit + 0x100:
 734                         cdr.Stat = Complete;
 735                         break;
 736
 737                 case CdlMute:
 738                         cdr.Muted = TRUE;
 739                         break;
 740
 741                 case CdlDemute:
 742                         cdr.Muted = FALSE;
 743                         break;
 744
 745                 case CdlSetfilter:
 746                         cdr.File = cdr.Param[0];
 747                         cdr.Channel = cdr.Param[1];
 748                         break;
 749
 750                 case CdlSetmode:
 751                         no_busy_error = 1;
 752                         break;
 753
 754                 case CdlGetmode:
 755                         SetResultSize(6);
 756                         cdr.Result[1] = cdr.Mode;
 757                         cdr.Result[2] = cdr.File;
 758                         cdr.Result[3] = cdr.Channel;
 759                         cdr.Result[4] = 0;
 760                         cdr.Result[5] = 0;
 761                         no_busy_error = 1;
 762                         break;
 763
 764                 case CdlGetlocL:
 765                         SetResultSize(8);
 766                         memcpy(cdr.Result, cdr.Transfer, 8);
 767                         break;
 768
 769                 case CdlGetlocP:
 770                         SetResultSize(8);
 771                         memcpy(&cdr.Result, &cdr.subq, 8);
 772
 773                         if (!cdr.Play && !cdr.Reading)
 774                                 cdr.Result[1] = 0; // HACK?
 775                         break;
 776
 777                 case CdlReadT: // SetSession?
 778                         // really long
 779                         AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
 780                         start_rotating = 1;
 781                         break;
 782
 783                 case CdlReadT + 0x100:
 784                         cdr.Stat = Complete;
 785                         break;
 786
 787                 case CdlGetTN:
 788                         SetResultSize(3);
 789                         if (CDR_getTN(cdr.ResultTN) == -1) {
 790                                 cdr.Stat = DiskError;
 791                                 cdr.Result[0] |= STATUS_ERROR;
 792                         } else {
 793                                 cdr.Stat = Acknowledge;
 794                                 cdr.Result[1] = itob(cdr.ResultTN[0]);
 795                                 cdr.Result[2] = itob(cdr.ResultTN[1]);
 796                         }
 797                         break;
 798
 799                 case CdlGetTD:
 800                         cdr.Track = btoi(cdr.Param[0]);
 801                         SetResultSize(4);
 802                         if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
 803                                 cdr.Stat = DiskError;
 804                                 cdr.Result[0] |= STATUS_ERROR;
 805                         } else {
 806                                 cdr.Stat = Acknowledge;
 807                                 cdr.Result[0] = cdr.StatP;
 808                                 cdr.Result[1] = itob(cdr.ResultTD[2]);
 809                                 cdr.Result[2] = itob(cdr.ResultTD[1]);
 810                                 cdr.Result[3] = itob(cdr.ResultTD[0]);
 811                         }
 812                         break;
 813
 814                 case CdlSeekL:
 815                 case CdlSeekP:
 816                         StopCdda();
 817                         StopReading();
 818                         cdr.StatP |= STATUS_SEEK;
 819
 820                         /*
 821                         Crusaders of Might and Magic = 0.5x-4x
 822                         - fix cutscene speech start
 823
 824                         Eggs of Steel = 2x-?
 825                         - fix new game
 826
 827                         Medievil = ?-4x
 828                         - fix cutscene speech
 829
 830                         Rockman X5 = 0.5-4x
 831                         - fix capcom logo
 832                         */
 833                         CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
 834                         cdr.Seeked = SEEK_PENDING;
 835                         start_rotating = 1;
 836                         break;
 837
 838                 case CdlTest:
 839                         switch (cdr.Param[0]) {
 840                                 case 0x20: // System Controller ROM Version
 841                                         SetResultSize(4);
 842                                         memcpy(cdr.Result, Test20, 4);
 843                                         break;
 844                                 case 0x22:
 845                                         SetResultSize(8);
 846                                         memcpy(cdr.Result, Test22, 4);
 847                                         break;
 848                                 case 0x23: case 0x24:
 849                                         SetResultSize(8);
 850                                         memcpy(cdr.Result, Test23, 4);
 851                                         break;
 852                         }
 853                         no_busy_error = 1;
 854                         break;
 855
 856                 case CdlID:
 857                         AddIrqQueue(CdlID + 0x100, 20480);
 858                         break;
 859
 860                 case CdlID + 0x100:
 861                         SetResultSize(8);
 862                         cdr.Result[0] = cdr.StatP;
 863                         cdr.Result[1] = 0;
 864                         cdr.Result[2] = 0;
 865                         cdr.Result[3] = 0;
 866
 867                         // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
 868                         if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
 869                                 cdr.Result[1] = 0xc0;
 870                         }
 871                         else {
 872                                 if (stat.Type == 2)
 873                                         cdr.Result[1] |= 0x10;
 874                                 if (CdromId[0] == '\0')
 875                                         cdr.Result[1] |= 0x80;
 876                         }
 877                         cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
 878
 879                         strncpy((char *)&cdr.Result[4], "PCSX", 4);
 880                         cdr.Stat = Complete;
 881                         break;
 882
 883                 case CdlReset:
 884                         // yes, it really sets STATUS_SHELLOPEN
 885                         cdr.StatP |= STATUS_SHELLOPEN;
 886                         cdr.DriveState = DRIVESTATE_RESCAN_CD;
 887                         CDRLID_INT(20480);
 888                         no_busy_error = 1;
 889                         start_rotating = 1;
 890                         break;
 891
 892                 case CdlGetQ:
 893                         // TODO?
 894                         CDR_LOG_I("got CdlGetQ\n");
 895                         break;
 896
 897                 case CdlReadToc:
 898                         AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
 899                         no_busy_error = 1;
 900                         start_rotating = 1;
 901                         break;
 902
 903                 case CdlReadToc + 0x100:
 904                         cdr.Stat = Complete;
 905                         no_busy_error = 1;
 906                         break;
 907
 908                 case CdlReadN:
 909                 case CdlReadS:
 910                         if (cdr.SetlocPending) {
 911                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 912                                 cdr.SetlocPending = 0;
 913                         }
 914                         Find_CurTrack(cdr.SetSectorPlay);
 915
 916                         if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
 917                                 // Read* acts as play for cdda tracks in cdda mode
 918                                 goto do_CdlPlay;
 919
 920                         cdr.Reading = 1;
 921                         cdr.FirstSector = 1;
 922
 923                         // Fighting Force 2 - update subq time immediately
 924                         // - fixes new game
 925                         ReadTrack(cdr.SetSectorPlay);
 926
 927
 928                         // Crusaders of Might and Magic - update getlocl now
 929                         // - fixes cutscene speech
 930                         {
 931                                 u8 *buf = CDR_getBuffer();
 932                                 if (buf != NULL)
 933                                         memcpy(cdr.Transfer, buf, 8);
 934                         }
 935
 936                         /*
 937                         Duke Nukem: Land of the Babes - seek then delay read for one frame
 938                         - fixes cutscenes
 939                         C-12 - Final Resistance - doesn't like seek
 940                         */
 941
 942                         if (cdr.Seeked != SEEK_DONE) {
 943                                 cdr.StatP |= STATUS_SEEK;
 944                                 cdr.StatP &= ~STATUS_READ;
 945
 946                                 // Crusaders of Might and Magic - use short time
 947                                 // - fix cutscene speech (startup)
 948
 949                                 // ??? - use more accurate seek time later
 950                                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
 951                         } else {
 952                                 cdr.StatP |= STATUS_READ;
 953                                 cdr.StatP &= ~STATUS_SEEK;
 954
 955                                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
 956                         }
 957
 958                         cdr.Result[0] = cdr.StatP;
 959                         start_rotating = 1;
 960                         break;
 961
 962                 default:
 963                         CDR_LOG_I("Invalid command: %02x\n", Irq);
 964                         error = ERROR_INVALIDCMD;
 965                         // FALLTHROUGH
 966
 967                 set_error:
 968                         SetResultSize(2);
 969                         cdr.Result[0] = cdr.StatP | STATUS_ERROR;
 970                         cdr.Result[1] = error;
 971                         cdr.Stat = DiskError;
 972                         break;
 973         }
 974
 975         if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
 976                 cdr.DriveState = DRIVESTATE_STANDBY;
 977                 cdr.StatP |= STATUS_ROTATING;
 978         }
 979
 980         if (!no_busy_error) {
 981                 switch (cdr.DriveState) {
 982                 case DRIVESTATE_LID_OPEN:
 983                 case DRIVESTATE_RESCAN_CD:
 984                 case DRIVESTATE_PREPARE_CD:
 985                         SetResultSize(2);
 986                         cdr.Result[0] = cdr.StatP | STATUS_ERROR;
 987                         cdr.Result[1] = ERROR_NOT_READY;
 988                         cdr.Stat = DiskError;
 989                         break;
 990                 }
 991         }
 992
 993 finish:
 994         setIrq();
 995         cdr.ParamC = 0;
 996
 997 #ifdef CDR_LOG_CMD_IRQ
 998         {
 999                 int i;
1000                 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1001                         !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1002                 for (i = 0; i < cdr.ResultC; i++)
1003                         SysPrintf("%02x ", cdr.Result[i]);
1004                 SysPrintf("\n");
1005         }
1006 #endif
1007 }
1008
1009 #ifdef __ARM_ARCH_7A__
1010  #define ssat32_to_16(v) \
1011   asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1012 #else
1013  #define ssat32_to_16(v) do { \
1014   if (v < -32768) v = -32768; \
1015   else if (v > 32767) v = 32767; \
1016  } while (0)
1017 #endif
1018
1019 void cdrAttenuate(s16 *buf, int samples, int stereo)
1020 {
1021         int i, l, r;
1022         int ll = cdr.AttenuatorLeftToLeft;
1023         int lr = cdr.AttenuatorLeftToRight;
1024         int rl = cdr.AttenuatorRightToLeft;
1025         int rr = cdr.AttenuatorRightToRight;
1026
1027         if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1028                 return;
1029
1030         if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1031                 return;
1032
1033         if (stereo) {
1034                 for (i = 0; i < samples; i++) {
1035                         l = buf[i * 2];
1036                         r = buf[i * 2 + 1];
1037                         l = (l * ll + r * rl) >> 7;
1038                         r = (r * rr + l * lr) >> 7;
1039                         ssat32_to_16(l);
1040                         ssat32_to_16(r);
1041                         buf[i * 2] = l;
1042                         buf[i * 2 + 1] = r;
1043                 }
1044         }
1045         else {
1046                 for (i = 0; i < samples; i++) {
1047                         l = buf[i];
1048                         l = l * (ll + rl) >> 7;
1049                         //r = r * (rr + lr) >> 7;
1050                         ssat32_to_16(l);
1051                         //ssat32_to_16(r);
1052                         buf[i] = l;
1053                 }
1054         }
1055 }
1056
1057 void cdrReadInterrupt() {
1058         u8 *buf;
1059
1060         if (!cdr.Reading)
1061                 return;
1062
1063         if (cdr.Irq || cdr.Stat) {
1064                 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1065                 CDREAD_INT(0x1000);
1066                 return;
1067         }
1068
1069         cdr.OCUP = 1;
1070         SetResultSize(1);
1071         cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1072         cdr.StatP &= ~STATUS_SEEK;
1073         cdr.Result[0] = cdr.StatP;
1074         cdr.Seeked = SEEK_DONE;
1075
1076         ReadTrack(cdr.SetSectorPlay);
1077
1078         buf = CDR_getBuffer();
1079         if (buf == NULL)
1080                 cdr.RErr = -1;
1081
1082         if (cdr.RErr == -1) {
1083                 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1084                 memset(cdr.Transfer, 0, DATA_SIZE);
1085                 cdr.Stat = DiskError;
1086                 cdr.Result[0] |= STATUS_ERROR;
1087                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1088                 return;
1089         }
1090
1091         memcpy(cdr.Transfer, buf, DATA_SIZE);
1092         CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1093
1094
1095         CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1096
1097         if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1098                 // Firemen 2: Multi-XA files - briefings, cutscenes
1099                 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1100                         cdr.File = cdr.Transfer[4 + 0];
1101                         cdr.Channel = cdr.Transfer[4 + 1];
1102                 }
1103
1104                 if((cdr.Transfer[4 + 2] & 0x4) &&
1105                          (cdr.Transfer[4 + 1] == cdr.Channel) &&
1106                          (cdr.Transfer[4 + 0] == cdr.File)) {
1107                         int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1108                         if (!ret) {
1109                                 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1110                                 SPU_playADPCMchannel(&cdr.Xa);
1111                                 cdr.FirstSector = 0;
1112                         }
1113                         else cdr.FirstSector = -1;
1114                 }
1115         }
1116
1117         cdr.SetSectorPlay[2]++;
1118         if (cdr.SetSectorPlay[2] == 75) {
1119                 cdr.SetSectorPlay[2] = 0;
1120                 cdr.SetSectorPlay[1]++;
1121                 if (cdr.SetSectorPlay[1] == 60) {
1122                         cdr.SetSectorPlay[1] = 0;
1123                         cdr.SetSectorPlay[0]++;
1124                 }
1125         }
1126
1127         cdr.Readed = 0;
1128
1129         CDREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
1130
1131         /*
1132         Croc 2: $40 - only FORM1 (*)
1133         Judge Dredd: $C8 - only FORM1 (*)
1134         Sim Theme Park - no adpcm at all (zero)
1135         */
1136
1137         if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1138                 cdr.Stat = DataReady;
1139                 setIrq();
1140         }
1141
1142         // update for CdlGetlocP
1143         ReadTrack(cdr.SetSectorPlay);
1144 }
1145
1146 /*
1147 cdrRead0:
1148         bit 0,1 - mode
1149         bit 2 - unknown
1150         bit 3 - unknown
1151         bit 4 - unknown
1152         bit 5 - 1 result ready
1153         bit 6 - 1 dma ready
1154         bit 7 - 1 command being processed
1155 */
1156
1157 unsigned char cdrRead0(void) {
1158         if (cdr.ResultReady)
1159                 cdr.Ctrl |= 0x20;
1160         else
1161                 cdr.Ctrl &= ~0x20;
1162
1163         if (cdr.OCUP)
1164                 cdr.Ctrl |= 0x40;
1165 //  else
1166 //              cdr.Ctrl &= ~0x40;
1167
1168         // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1169         cdr.Ctrl |= 0x18;
1170
1171         CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1172
1173         return psxHu8(0x1800) = cdr.Ctrl;
1174 }
1175
1176 void cdrWrite0(unsigned char rt) {
1177         CDR_LOG_IO("cdr w0: %02x\n", rt);
1178
1179         cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1180 }
1181
1182 unsigned char cdrRead1(void) {
1183         if ((cdr.ResultP & 0xf) < cdr.ResultC)
1184                 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1185         else
1186                 psxHu8(0x1801) = 0;
1187         cdr.ResultP++;
1188         if (cdr.ResultP == cdr.ResultC)
1189                 cdr.ResultReady = 0;
1190
1191         CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1192
1193         return psxHu8(0x1801);
1194 }
1195
1196 void cdrWrite1(unsigned char rt) {
1197         u8 set_loc[3];
1198         int i;
1199
1200         CDR_LOG_IO("cdr w1: %02x\n", rt);
1201
1202         switch (cdr.Ctrl & 3) {
1203         case 0:
1204                 break;
1205         case 3:
1206                 cdr.AttenuatorRightToRightT = rt;
1207                 return;
1208         default:
1209                 return;
1210         }
1211
1212         cdr.Cmd = rt;
1213         cdr.OCUP = 0;
1214
1215 #ifdef CDR_LOG_CMD_IRQ
1216         SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1217         if (cdr.ParamC) {
1218                 SysPrintf(" Param[%d] = {", cdr.ParamC);
1219                 for (i = 0; i < cdr.ParamC; i++)
1220                         SysPrintf(" %x,", cdr.Param[i]);
1221                 SysPrintf("}\n");
1222         } else {
1223                 SysPrintf("\n");
1224         }
1225 #endif
1226
1227         cdr.ResultReady = 0;
1228         cdr.Ctrl |= 0x80;
1229         // cdr.Stat = NoIntr;
1230         AddIrqQueue(cdr.Cmd, 0x800);
1231
1232         switch (cdr.Cmd) {
1233         case CdlSetloc:
1234                 for (i = 0; i < 3; i++)
1235                         set_loc[i] = btoi(cdr.Param[i]);
1236
1237                 i = msf2sec(cdr.SetSectorPlay);
1238                 i = abs(i - msf2sec(set_loc));
1239                 if (i > 16)
1240                         cdr.Seeked = SEEK_PENDING;
1241
1242                 memcpy(cdr.SetSector, set_loc, 3);
1243                 cdr.SetSector[3] = 0;
1244                 cdr.SetlocPending = 1;
1245                 break;
1246
1247         case CdlReadN:
1248         case CdlReadS:
1249         case CdlPause:
1250                 StopCdda();
1251                 StopReading();
1252                 break;
1253
1254         case CdlReset:
1255         case CdlInit:
1256                 cdr.Seeked = SEEK_DONE;
1257                 StopCdda();
1258                 StopReading();
1259                 break;
1260
1261         case CdlSetmode:
1262                 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1263
1264                 cdr.Mode = cdr.Param[0];
1265
1266                 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1267                 // - fixes choppy movie sound
1268                 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1269                         StopCdda();
1270                 break;
1271         }
1272 }
1273
1274 unsigned char cdrRead2(void) {
1275         unsigned char ret;
1276
1277         if (cdr.Readed == 0) {
1278                 ret = 0;
1279         } else {
1280                 ret = *pTransfer++;
1281         }
1282
1283         CDR_LOG_IO("cdr r2: %02x\n", ret);
1284         return ret;
1285 }
1286
1287 void cdrWrite2(unsigned char rt) {
1288         CDR_LOG_IO("cdr w2: %02x\n", rt);
1289
1290         switch (cdr.Ctrl & 3) {
1291         case 0:
1292                 if (cdr.ParamC < 8) // FIXME: size and wrapping
1293                         cdr.Param[cdr.ParamC++] = rt;
1294                 return;
1295         case 1:
1296                 cdr.Reg2 = rt;
1297                 setIrq();
1298                 return;
1299         case 2:
1300                 cdr.AttenuatorLeftToLeftT = rt;
1301                 return;
1302         case 3:
1303                 cdr.AttenuatorRightToLeftT = rt;
1304                 return;
1305         }
1306 }
1307
1308 unsigned char cdrRead3(void) {
1309         if (cdr.Ctrl & 0x1)
1310                 psxHu8(0x1803) = cdr.Stat | 0xE0;
1311         else
1312                 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1313
1314         CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1315         return psxHu8(0x1803);
1316 }
1317
1318 void cdrWrite3(unsigned char rt) {
1319         CDR_LOG_IO("cdr w3: %02x\n", rt);
1320
1321         switch (cdr.Ctrl & 3) {
1322         case 0:
1323                 break; // transfer
1324         case 1:
1325                 cdr.Stat &= ~rt;
1326
1327                 if (rt & 0x40)
1328                         cdr.ParamC = 0;
1329                 return;
1330         case 2:
1331                 cdr.AttenuatorLeftToRightT = rt;
1332                 return;
1333         case 3:
1334                 if (rt & 0x20) {
1335                         memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1336                         CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1337                                 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1338                                 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1339                 }
1340                 return;
1341         }
1342
1343         if ((rt & 0x80) && cdr.Readed == 0) {
1344                 cdr.Readed = 1;
1345                 pTransfer = cdr.Transfer;
1346
1347                 switch (cdr.Mode & 0x30) {
1348                         case MODE_SIZE_2328:
1349                         case 0x00:
1350                                 pTransfer += 12;
1351                                 break;
1352
1353                         case MODE_SIZE_2340:
1354                                 pTransfer += 0;
1355                                 break;
1356
1357                         default:
1358                                 break;
1359                 }
1360         }
1361 }
1362
1363 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1364         u32 cdsize;
1365         int size;
1366         u8 *ptr;
1367
1368         CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1369
1370         switch (chcr) {
1371                 case 0x11000000:
1372                 case 0x11400100:
1373                         if (cdr.Readed == 0) {
1374                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1375                                 break;
1376                         }
1377
1378                         cdsize = (bcr & 0xffff) * 4;
1379
1380                         // Ape Escape: bcr = 0001 / 0000
1381                         // - fix boot
1382                         if( cdsize == 0 )
1383                         {
1384                                 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1385                                         case MODE_SIZE_2340: cdsize = 2340; break;
1386                                         case MODE_SIZE_2328: cdsize = 2328; break;
1387                                         default:
1388                                         case MODE_SIZE_2048: cdsize = 2048; break;
1389                                 }
1390                         }
1391
1392
1393                         ptr = (u8 *)PSXM(madr);
1394                         if (ptr == NULL) {
1395                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1396                                 break;
1397                         }
1398
1399                         /*
1400                         GS CDX: Enhancement CD crash
1401                         - Setloc 0:0:0
1402                         - CdlPlay
1403                         - Spams DMA3 and gets buffer overrun
1404                         */
1405                         size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1406                         if (size > cdsize)
1407                                 size = cdsize;
1408                         if (size > 0)
1409                         {
1410                                 memcpy(ptr, pTransfer, size);
1411                         }
1412
1413                         psxCpu->Clear(madr, cdsize / 4);
1414                         pTransfer += cdsize;
1415
1416
1417                         // burst vs normal
1418                         if( chcr == 0x11400100 ) {
1419                                 CDRDMA_INT( (cdsize/4) / 4 );
1420                         }
1421                         else if( chcr == 0x11000000 ) {
1422                                 CDRDMA_INT( (cdsize/4) * 1 );
1423                         }
1424                         return;
1425
1426                 default:
1427                         CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1428                         break;
1429         }
1430
1431         HW_DMA3_CHCR &= SWAP32(~0x01000000);
1432         DMA_INTERRUPT(3);
1433 }
1434
1435 void cdrDmaInterrupt()
1436 {
1437         if (HW_DMA3_CHCR & SWAP32(0x01000000))
1438         {
1439                 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1440                 DMA_INTERRUPT(3);
1441         }
1442 }
1443
1444 static void getCdInfo(void)
1445 {
1446         u8 tmp;
1447
1448         CDR_getTN(cdr.ResultTN);
1449         CDR_getTD(0, cdr.SetSectorEnd);
1450         tmp = cdr.SetSectorEnd[0];
1451         cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1452         cdr.SetSectorEnd[2] = tmp;
1453 }
1454
1455 void cdrReset() {
1456         memset(&cdr, 0, sizeof(cdr));
1457         cdr.CurTrack = 1;
1458         cdr.File = 1;
1459         cdr.Channel = 1;
1460         cdr.Reg2 = 0x1f;
1461         cdr.Stat = NoIntr;
1462         cdr.DriveState = DRIVESTATE_STANDBY;
1463         cdr.StatP = STATUS_ROTATING;
1464         pTransfer = cdr.Transfer;
1465
1466         // BIOS player - default values
1467         cdr.AttenuatorLeftToLeft = 0x80;
1468         cdr.AttenuatorLeftToRight = 0x00;
1469         cdr.AttenuatorRightToLeft = 0x00;
1470         cdr.AttenuatorRightToRight = 0x80;
1471
1472         getCdInfo();
1473 }
1474
1475 int cdrFreeze(void *f, int Mode) {
1476         u32 tmp;
1477         u8 tmpp[3];
1478
1479         if (Mode == 0 && !Config.Cdda)
1480                 CDR_stop();
1481
1482         cdr.freeze_ver = 0x63647202;
1483         gzfreeze(&cdr, sizeof(cdr));
1484
1485         if (Mode == 1) {
1486                 cdr.ParamP = cdr.ParamC;
1487                 tmp = pTransfer - cdr.Transfer;
1488         }
1489
1490         gzfreeze(&tmp, sizeof(tmp));
1491
1492         if (Mode == 0) {
1493                 getCdInfo();
1494
1495                 pTransfer = cdr.Transfer + tmp;
1496
1497                 // read right sub data
1498                 memcpy(tmpp, cdr.Prev, 3);
1499                 cdr.Prev[0]++;
1500                 ReadTrack(tmpp);
1501
1502                 if (cdr.Play) {
1503                         if (cdr.freeze_ver < 0x63647202)
1504                                 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1505
1506                         Find_CurTrack(cdr.SetSectorPlay);
1507                         if (!Config.Cdda)
1508                                 CDR_play(cdr.SetSectorPlay);
1509                 }
1510
1511                 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1512                         // old versions did not latch Reg2, have to fixup..
1513                         if (cdr.Reg2 == 0) {
1514                                 SysPrintf("cdrom: fixing up old savestate\n");
1515                                 cdr.Reg2 = 7;
1516                         }
1517                 }
1518         }
1519
1520         return 0;
1521 }
1522
1523 void LidInterrupt() {
1524         getCdInfo();
1525         StopCdda();
1526         cdrLidSeekInterrupt();
1527 }