1 /***************************************************************************
2 * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
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. *
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. *
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 ***************************************************************************/
21 * Handles all CD-ROM registers and functions.
27 #include "arm_features.h"
31 #define CDR_LOG SysPrintf
36 #define CDR_LOG_I SysPrintf
38 #define CDR_LOG_I(...)
41 #define CDR_LOG_IO SysPrintf
43 #define CDR_LOG_IO(...)
45 //#define CDR_LOG_CMD_IRQ
48 static unsigned char *pTransfer;
49 static s16 read_buf[CD_FRAMESIZE_RAW/2];
51 /* CD-ROM magic numbers */
52 #define CdlSync 0 /* nocash documentation : "Uh, actually, returns error code 40h = Invalid Command...?" */
65 #define CdlSetfilter 13
67 #define CdlGetparam 15
75 #define CdlSetclock 23
76 #define CdlGetclock 24
84 char *CmdName[0x100]= {
85 "CdlSync", "CdlNop", "CdlSetloc", "CdlPlay",
86 "CdlForward", "CdlBackward", "CdlReadN", "CdlStandby",
87 "CdlStop", "CdlPause", "CdlReset", "CdlMute",
88 "CdlDemute", "CdlSetfilter", "CdlSetmode", "CdlGetparam",
89 "CdlGetlocL", "CdlGetlocP", "CdlReadT", "CdlGetTN",
90 "CdlGetTD", "CdlSeekL", "CdlSeekP", "CdlSetclock",
91 "CdlGetclock", "CdlTest", "CdlID", "CdlReadS",
92 "CdlInit", NULL, "CDlReadToc", NULL
95 unsigned char Test04[] = { 0 };
96 unsigned char Test05[] = { 0 };
97 unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
98 unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
99 unsigned char Test23[] = { 0x43, 0x58, 0x44, 0x32, 0x39 ,0x34, 0x30, 0x51 };
105 #define Acknowledge 3
110 #define MODE_SPEED (1<<7) // 0x80
111 #define MODE_STRSND (1<<6) // 0x40 ADPCM on/off
112 #define MODE_SIZE_2340 (1<<5) // 0x20
113 #define MODE_SIZE_2328 (1<<4) // 0x10
114 #define MODE_SIZE_2048 (0<<4) // 0x00
115 #define MODE_SF (1<<3) // 0x08 channel on/off
116 #define MODE_REPORT (1<<2) // 0x04
117 #define MODE_AUTOPAUSE (1<<1) // 0x02
118 #define MODE_CDDA (1<<0) // 0x01
121 #define STATUS_PLAY (1<<7) // 0x80
122 #define STATUS_SEEK (1<<6) // 0x40
123 #define STATUS_READ (1<<5) // 0x20
124 #define STATUS_SHELLOPEN (1<<4) // 0x10
125 #define STATUS_UNKNOWN3 (1<<3) // 0x08
126 #define STATUS_UNKNOWN2 (1<<2) // 0x04
127 #define STATUS_ROTATING (1<<1) // 0x02
128 #define STATUS_ERROR (1<<0) // 0x01
131 #define ERROR_NOTREADY (1<<7) // 0x80
132 #define ERROR_INVALIDCMD (1<<6) // 0x40
133 #define ERROR_INVALIDARG (1<<5) // 0x20
135 // 1x = 75 sectors per second
136 // PSXCLK = 1 sec in the ps
137 // so (PSXCLK / 75) = cdr read time (linuzappz)
138 #define cdReadTime (PSXCLK / 75)
141 DRIVESTATE_STANDBY = 0,
143 DRIVESTATE_RESCAN_CD,
144 DRIVESTATE_PREPARE_CD,
154 static struct CdrStat stat;
156 static unsigned int msf2sec(const u8 *msf) {
157 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
160 // for that weird psemu API..
161 static unsigned int fsm2sec(const u8 *msf) {
162 return ((msf[2] * 60 + msf[1]) * 75) + msf[0];
165 static void sec2msf(unsigned int s, u8 *msf) {
166 msf[0] = s / 75 / 60;
167 s = s - msf[0] * 75 * 60;
174 #define CDR_INT(eCycle) { \
175 psxRegs.interrupt |= (1 << PSXINT_CDR); \
176 psxRegs.intCycle[PSXINT_CDR].cycle = eCycle; \
177 psxRegs.intCycle[PSXINT_CDR].sCycle = psxRegs.cycle; \
178 new_dyna_set_event(PSXINT_CDR, eCycle); \
182 #define CDREAD_INT(eCycle) { \
183 psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
184 psxRegs.intCycle[PSXINT_CDREAD].cycle = eCycle; \
185 psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
186 new_dyna_set_event(PSXINT_CDREAD, eCycle); \
189 // cdrLidSeekInterrupt
190 #define CDRLID_INT(eCycle) { \
191 psxRegs.interrupt |= (1 << PSXINT_CDRLID); \
192 psxRegs.intCycle[PSXINT_CDRLID].cycle = eCycle; \
193 psxRegs.intCycle[PSXINT_CDRLID].sCycle = psxRegs.cycle; \
194 new_dyna_set_event(PSXINT_CDRLID, eCycle); \
198 #define CDRMISC_INT(eCycle) { \
199 psxRegs.interrupt |= (1 << PSXINT_CDRPLAY); \
200 psxRegs.intCycle[PSXINT_CDRPLAY].cycle = eCycle; \
201 psxRegs.intCycle[PSXINT_CDRPLAY].sCycle = psxRegs.cycle; \
202 new_dyna_set_event(PSXINT_CDRPLAY, eCycle); \
205 #define StopReading() { \
208 psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
210 cdr.StatP &= ~(STATUS_READ|STATUS_SEEK);\
213 #define StopCdda() { \
215 if (!Config.Cdda) CDR_stop(); \
216 cdr.StatP &= ~STATUS_PLAY; \
218 cdr.FastForward = 0; \
219 cdr.FastBackward = 0; \
220 /*SPU_registerCallback( SPUirq );*/ \
224 #define SetResultSize(size) { \
226 cdr.ResultC = size; \
227 cdr.ResultReady = 1; \
230 static void setIrq(void)
232 if (cdr.Stat & cdr.Reg2)
233 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
236 // timing used in this function was taken from tests on real hardware
237 // (yes it's slow, but you probably don't want to modify it)
238 void cdrLidSeekInterrupt()
240 switch (cdr.DriveState) {
242 case DRIVESTATE_STANDBY:
243 cdr.StatP &= ~STATUS_SEEK;
245 if (CDR_getStatus(&stat) == -1)
248 if (stat.Status & STATUS_SHELLOPEN)
251 cdr.DriveState = DRIVESTATE_LID_OPEN;
256 case DRIVESTATE_LID_OPEN:
257 if (CDR_getStatus(&stat) == -1)
258 stat.Status &= ~STATUS_SHELLOPEN;
261 if (!(cdr.StatP & STATUS_SHELLOPEN)) {
263 cdr.StatP |= STATUS_SHELLOPEN;
265 // could generate error irq here, but real hardware
266 // only sometimes does that
267 // (not done when lots of commands are sent?)
269 CDRLID_INT(cdReadTime * 30);
272 else if (cdr.StatP & STATUS_ROTATING) {
273 cdr.StatP &= ~STATUS_ROTATING;
275 else if (!(stat.Status & STATUS_SHELLOPEN)) {
279 // cdr.StatP STATUS_SHELLOPEN is "sticky"
280 // and is only cleared by CdlNop
282 cdr.DriveState = DRIVESTATE_RESCAN_CD;
283 CDRLID_INT(cdReadTime * 105);
288 CDRLID_INT(cdReadTime * 3);
291 case DRIVESTATE_RESCAN_CD:
292 cdr.StatP |= STATUS_ROTATING;
293 cdr.DriveState = DRIVESTATE_PREPARE_CD;
295 // this is very long on real hardware, over 6 seconds
296 // make it a bit faster here...
297 CDRLID_INT(cdReadTime * 150);
300 case DRIVESTATE_PREPARE_CD:
301 cdr.StatP |= STATUS_SEEK;
303 cdr.DriveState = DRIVESTATE_STANDBY;
304 CDRLID_INT(cdReadTime * 26);
309 static void Find_CurTrack(const u8 *time)
313 current = msf2sec(time);
315 for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
316 CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
317 sect = fsm2sec(cdr.ResultTD);
318 if (sect - current >= 150)
323 static void generate_subq(const u8 *time)
325 unsigned char start[3], next[3];
326 unsigned int this_s, start_s, next_s, pregap;
329 CDR_getTD(cdr.CurTrack, start);
330 if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
332 CDR_getTD(cdr.CurTrack + 1, next);
335 // last track - cd size
337 next[0] = cdr.SetSectorEnd[2];
338 next[1] = cdr.SetSectorEnd[1];
339 next[2] = cdr.SetSectorEnd[0];
342 this_s = msf2sec(time);
343 start_s = fsm2sec(start);
344 next_s = fsm2sec(next);
346 cdr.TrackChanged = FALSE;
348 if (next_s - this_s < pregap) {
349 cdr.TrackChanged = TRUE;
356 relative_s = this_s - start_s;
357 if (relative_s < 0) {
359 relative_s = -relative_s;
361 sec2msf(relative_s, cdr.subq.Relative);
363 cdr.subq.Track = itob(cdr.CurTrack);
364 cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
365 cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
366 cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
367 cdr.subq.Absolute[0] = itob(time[0]);
368 cdr.subq.Absolute[1] = itob(time[1]);
369 cdr.subq.Absolute[2] = itob(time[2]);
372 static void ReadTrack(const u8 *time) {
373 unsigned char tmp[3];
377 tmp[0] = itob(time[0]);
378 tmp[1] = itob(time[1]);
379 tmp[2] = itob(time[2]);
381 if (memcmp(cdr.Prev, tmp, 3) == 0)
384 CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
386 cdr.NoErr = CDR_readTrack(tmp);
387 memcpy(cdr.Prev, tmp, 3);
392 subq = (struct SubQ *)CDR_getBufferSub();
393 if (subq != NULL && cdr.CurTrack == 1) {
394 crc = calcCrc((u8 *)subq + 12, 10);
395 if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
396 cdr.subq.Track = subq->TrackNumber;
397 cdr.subq.Index = subq->IndexNumber;
398 memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
399 memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
402 CDR_LOG_I("subq bad crc @%02x:%02x:%02x\n",
403 tmp[0], tmp[1], tmp[2]);
410 CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
411 cdr.subq.Track, cdr.subq.Index,
412 cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
413 cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
416 static void AddIrqQueue(unsigned short irq, unsigned long ecycle) {
418 if (irq == cdr.Irq || irq + 0x100 == cdr.Irq) {
424 CDR_LOG_I("cdr: override cmd %02x -> %02x\n", cdr.Irq, irq);
433 static void cdrPlayInterrupt_Autopause()
436 boolean abs_lev_chselect;
439 if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
440 CDR_LOG( "CDDA STOP\n" );
442 // Magic the Gathering
443 // - looping territory cdda
446 //cdr.ResultReady = 1;
447 //cdr.Stat = DataReady;
453 else if (((cdr.Mode & MODE_REPORT) || cdr.FastForward || cdr.FastBackward)) {
454 cdr.Result[0] = cdr.StatP;
455 cdr.Result[1] = cdr.subq.Track;
456 cdr.Result[2] = cdr.subq.Index;
458 abs_lev_chselect = cdr.subq.Absolute[1] & 0x01;
460 /* 8 is a hack. For accuracy, it should be 588. */
461 for (i = 0; i < 8; i++)
463 abs_lev_max = MAX_VALUE(abs_lev_max, abs(read_buf[i * 2 + abs_lev_chselect]));
465 abs_lev_max = MIN_VALUE(abs_lev_max, 32767);
466 abs_lev_max |= abs_lev_chselect << 15;
468 if (cdr.subq.Absolute[2] & 0x10) {
469 cdr.Result[3] = cdr.subq.Relative[0];
470 cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
471 cdr.Result[5] = cdr.subq.Relative[2];
474 cdr.Result[3] = cdr.subq.Absolute[0];
475 cdr.Result[4] = cdr.subq.Absolute[1];
476 cdr.Result[5] = cdr.subq.Absolute[2];
479 cdr.Result[6] = abs_lev_max >> 0;
480 cdr.Result[7] = abs_lev_max >> 8;
482 // Rayman: Logo freeze (resultready + dataready)
484 cdr.Stat = DataReady;
492 void cdrPlayInterrupt()
494 if (cdr.Seeked == SEEK_PENDING) {
496 CDR_LOG_I("cdrom: seek stat hack\n");
501 cdr.StatP |= STATUS_ROTATING;
502 cdr.StatP &= ~STATUS_SEEK;
503 cdr.Result[0] = cdr.StatP;
504 cdr.Seeked = SEEK_DONE;
510 if (cdr.SetlocPending) {
511 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
512 cdr.SetlocPending = 0;
513 cdr.m_locationChanged = TRUE;
515 Find_CurTrack(cdr.SetSectorPlay);
516 ReadTrack(cdr.SetSectorPlay);
517 cdr.TrackChanged = FALSE;
520 if (!cdr.Play) return;
522 CDR_LOG( "CDDA - %d:%d:%d\n",
523 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
525 if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
527 cdr.TrackChanged = TRUE;
530 CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], (u8 *)read_buf);
533 if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
534 cdrPlayInterrupt_Autopause();
536 if (CDR_readCDDA && !cdr.Muted && !Config.Cdda) {
537 cdrAttenuate(read_buf, CD_FRAMESIZE_RAW / 4, 1);
538 if (SPU_playCDDAchannel)
539 SPU_playCDDAchannel(read_buf, CD_FRAMESIZE_RAW);
542 cdr.SetSectorPlay[2]++;
543 if (cdr.SetSectorPlay[2] == 75) {
544 cdr.SetSectorPlay[2] = 0;
545 cdr.SetSectorPlay[1]++;
546 if (cdr.SetSectorPlay[1] == 60) {
547 cdr.SetSectorPlay[1] = 0;
548 cdr.SetSectorPlay[0]++;
552 if (cdr.m_locationChanged)
554 CDRMISC_INT(cdReadTime * 30);
555 cdr.m_locationChanged = FALSE;
559 CDRMISC_INT(cdReadTime);
562 // update for CdlGetlocP/autopause
563 generate_subq(cdr.SetSectorPlay);
566 void cdrInterrupt() {
568 int no_busy_error = 0;
569 int start_rotating = 0;
572 unsigned int seekTime = 0;
578 CDR_LOG_I("cdrom: stat hack: %02x %x\n", cdr.Irq, cdr.Stat);
587 cdr.Result[0] = cdr.StatP;
588 cdr.Stat = Acknowledge;
590 if (cdr.IrqRepeated) {
592 if (cdr.eCycle > psxRegs.cycle) {
602 if (cdr.DriveState != DRIVESTATE_LID_OPEN)
603 cdr.StatP &= ~STATUS_SHELLOPEN;
608 CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
610 // MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
611 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))
613 CDR_LOG("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
614 error = ERROR_INVALIDARG;
619 for (i = 0; i < 3; i++)
621 set_loc[i] = btoi(cdr.Param[i]);
624 i = msf2sec(cdr.SetSectorPlay);
625 i = abs(i - msf2sec(set_loc));
627 cdr.Seeked = SEEK_PENDING;
629 memcpy(cdr.SetSector, set_loc, 3);
630 cdr.SetSector[3] = 0;
631 cdr.SetlocPending = 1;
638 if (cdr.Seeked == SEEK_PENDING) {
639 // XXX: wrong, should seek instead..
640 cdr.Seeked = SEEK_DONE;
643 cdr.FastBackward = 0;
646 if (cdr.SetlocPending) {
647 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
648 cdr.SetlocPending = 0;
649 cdr.m_locationChanged = TRUE;
653 // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
655 if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
656 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
657 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
661 int track = btoi( cdr.Param[0] );
663 if (track <= cdr.ResultTN[1])
664 cdr.CurTrack = track;
666 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
668 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
669 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
670 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
671 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
676 Rayman: detect track changes
679 Twisted Metal 2: skip PREGAP + starting accurate SubQ
680 - plays tracks without retry play
682 Wild 9: skip PREGAP + starting accurate SubQ
683 - plays tracks without retry play
685 Find_CurTrack(cdr.SetSectorPlay);
686 ReadTrack(cdr.SetSectorPlay);
687 cdr.TrackChanged = FALSE;
690 CDR_play(cdr.SetSectorPlay);
692 // Vib Ribbon: gameplay checks flag
693 cdr.StatP &= ~STATUS_SEEK;
694 cdr.Result[0] = cdr.StatP;
696 cdr.StatP |= STATUS_PLAY;
698 // BIOS player - set flag again
701 CDRMISC_INT( cdReadTime );
706 // TODO: error 80 if stopped
709 // GameShark CD Player: Calls 2x + Play 2x
711 cdr.FastBackward = 0;
717 // GameShark CD Player: Calls 2x + Play 2x
718 cdr.FastBackward = 1;
723 if (cdr.DriveState != DRIVESTATE_STOPPED) {
724 error = ERROR_INVALIDARG;
727 AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
731 case CdlStandby + 0x100:
737 // grab time for current track
738 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
740 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
741 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
742 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
749 if (cdr.DriveState == DRIVESTATE_STANDBY)
750 delay = cdReadTime * 30 / 2;
752 cdr.DriveState = DRIVESTATE_STOPPED;
753 AddIrqQueue(CdlStop + 0x100, delay);
756 case CdlStop + 0x100:
757 cdr.StatP &= ~STATUS_ROTATING;
758 cdr.Result[0] = cdr.StatP;
764 Gundam Battle Assault 2: much slower (*)
765 - Fixes boot, gameplay
767 Hokuto no Ken 2: slower
768 - Fixes intro + subtitles
770 InuYasha - Feudal Fairy Tale: slower
773 /* Gameblabla - Tightening the timings (as taken from Duckstation).
774 * The timings from Duckstation are based upon hardware tests.
775 * Mednafen's timing don't work for Gundam Battle Assault 2 in PAL/50hz mode,
776 * seems to be timing sensitive as it can depend on the CPU's clock speed.
778 if (cdr.DriveState == DRIVESTATE_STANDBY)
784 delay = (((cdr.Mode & MODE_SPEED) ? 2 : 1) * (1000000));
785 CDRMISC_INT((cdr.Mode & MODE_SPEED) ? cdReadTime / 2 : cdReadTime);
787 AddIrqQueue(CdlPause + 0x100, delay);
791 case CdlPause + 0x100:
792 cdr.StatP &= ~STATUS_READ;
793 cdr.Result[0] = cdr.StatP;
799 cdr.Mode = 0x20; /* This fixes This is Football 2, Pooh's Party lockups */
800 AddIrqQueue(CdlReset + 0x100, 4100000);
805 case CdlReset + 0x100:
818 cdr.File = cdr.Param[0];
819 cdr.Channel = cdr.Param[1];
827 /* Gameblabla : According to mednafen, Result size should be 5 and done this way. */
829 cdr.Result[1] = cdr.Mode;
831 cdr.Result[3] = cdr.File;
832 cdr.Result[4] = cdr.Channel;
838 memcpy(cdr.Result, cdr.Transfer, 8);
843 memcpy(&cdr.Result, &cdr.subq, 8);
846 case CdlReadT: // SetSession?
848 AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
852 case CdlReadT + 0x100:
858 if (CDR_getTN(cdr.ResultTN) == -1) {
859 cdr.Stat = DiskError;
860 cdr.Result[0] |= STATUS_ERROR;
862 cdr.Stat = Acknowledge;
863 cdr.Result[1] = itob(cdr.ResultTN[0]);
864 cdr.Result[2] = itob(cdr.ResultTN[1]);
869 cdr.Track = btoi(cdr.Param[0]);
871 if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
872 cdr.Stat = DiskError;
873 cdr.Result[0] |= STATUS_ERROR;
875 cdr.Stat = Acknowledge;
876 cdr.Result[0] = cdr.StatP;
877 cdr.Result[1] = itob(cdr.ResultTD[2]);
878 cdr.Result[2] = itob(cdr.ResultTD[1]);
879 /* According to Nocash's documentation, the function doesn't care about ff.
880 * This can be seen also in Mednafen's implementation. */
881 //cdr.Result[3] = itob(cdr.ResultTD[0]);
889 cdr.StatP |= STATUS_SEEK;
892 Crusaders of Might and Magic = 0.5x-4x
893 - fix cutscene speech start
899 - fix cutscene speech
904 CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
905 cdr.Seeked = SEEK_PENDING;
910 switch (cdr.Param[0]) {
911 case 0x20: // System Controller ROM Version
913 memcpy(cdr.Result, Test20, 4);
917 memcpy(cdr.Result, Test22, 4);
919 case 0x23: case 0x24:
921 memcpy(cdr.Result, Test23, 4);
928 AddIrqQueue(CdlID + 0x100, 20480);
933 cdr.Result[0] = cdr.StatP;
938 // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
939 if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
940 cdr.Result[1] = 0xc0;
944 cdr.Result[1] |= 0x10;
945 if (CdromId[0] == '\0')
946 cdr.Result[1] |= 0x80;
948 cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
950 strncpy((char *)&cdr.Result[4], "PCSX", 4);
955 // yes, it really sets STATUS_SHELLOPEN
956 cdr.StatP |= STATUS_SHELLOPEN;
957 cdr.DriveState = DRIVESTATE_RESCAN_CD;
968 AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
973 case CdlReadToc + 0x100:
980 if (cdr.SetlocPending) {
981 seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
984 * It was originally set to 1000000 for Driver, however it is not high enough for Worms Pinball
985 * and was unreliable for that game.
986 * I also tested it against Mednafen and Driver's titlescreen music starts 25 frames later, not immediatly.
988 * Obviously, this isn't perfect but right now, it should be a bit better.
989 * Games to test this against if you change that setting :
990 * - Driver (titlescreen music delay and retry mission)
991 * - Worms Pinball (Will either not boot or crash in the memory card screen)
992 * - Viewpoint (short pauses if the delay in the ingame music is too long)
994 * It seems that 3386880 * 5 is too much for Driver's titlescreen and it starts skipping.
995 * However, 1000000 is not enough for Worms Pinball to reliably boot.
997 if(seekTime > 3386880 * 2) seekTime = 3386880 * 2;
998 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
999 cdr.SetlocPending = 0;
1000 cdr.m_locationChanged = TRUE;
1002 Find_CurTrack(cdr.SetSectorPlay);
1004 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
1005 // Read* acts as play for cdda tracks in cdda mode
1009 cdr.FirstSector = 1;
1011 // Fighting Force 2 - update subq time immediately
1013 ReadTrack(cdr.SetSectorPlay);
1016 // Crusaders of Might and Magic - update getlocl now
1017 // - fixes cutscene speech
1019 u8 *buf = CDR_getBuffer();
1021 memcpy(cdr.Transfer, buf, 8);
1025 Duke Nukem: Land of the Babes - seek then delay read for one frame
1027 C-12 - Final Resistance - doesn't like seek
1031 By nicolasnoble from PCSX Redux :
1032 "It LOOKS like this logic is wrong, therefore disabling it with `&& false` for now.
1033 For "PoPoLoCrois Monogatari II", the game logic will soft lock and will never issue GetLocP to detect
1034 the end of its XA streams, as it seems to assume ReadS will not return a status byte with the SEEK
1035 flag set. I think the reasonning is that since it's invalid to call GetLocP while seeking, the game
1036 tries to protect itself against errors by preventing from issuing a GetLocP while it knows the
1037 last status was "seek". But this makes the logic just softlock as it'll never get a notification
1038 about the fact the drive is done seeking and the read actually started.
1040 In other words, this state machine here is probably wrong in assuming the response to ReadS/ReadN is
1041 done right away. It's rather when it's done seeking, and the read has actually started. This probably
1042 requires a bit more work to make sure seek delays are processed properly.
1043 Checked with a few games, this seems to work fine."
1045 Gameblabla additional notes :
1046 This still needs the "+ seekTime" that PCSX Redux doesn't have for the Driver "retry" mission error.
1048 cdr.StatP |= STATUS_READ;
1049 cdr.StatP &= ~STATUS_SEEK;
1051 CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime);
1053 cdr.Result[0] = cdr.StatP;
1058 CDR_LOG_I("Invalid command: %02x\n", Irq);
1059 error = ERROR_INVALIDCMD;
1064 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1065 cdr.Result[1] = error;
1066 cdr.Stat = DiskError;
1070 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
1071 cdr.DriveState = DRIVESTATE_STANDBY;
1072 cdr.StatP |= STATUS_ROTATING;
1075 if (!no_busy_error) {
1076 switch (cdr.DriveState) {
1077 case DRIVESTATE_LID_OPEN:
1078 case DRIVESTATE_RESCAN_CD:
1079 case DRIVESTATE_PREPARE_CD:
1081 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1082 cdr.Result[1] = ERROR_NOTREADY;
1083 cdr.Stat = DiskError;
1092 #ifdef CDR_LOG_CMD_IRQ
1095 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1096 !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1097 for (i = 0; i < cdr.ResultC; i++)
1098 SysPrintf("%02x ", cdr.Result[i]);
1105 #define ssat32_to_16(v) \
1106 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1108 #define ssat32_to_16(v) do { \
1109 if (v < -32768) v = -32768; \
1110 else if (v > 32767) v = 32767; \
1114 void cdrAttenuate(s16 *buf, int samples, int stereo)
1117 int ll = cdr.AttenuatorLeftToLeft;
1118 int lr = cdr.AttenuatorLeftToRight;
1119 int rl = cdr.AttenuatorRightToLeft;
1120 int rr = cdr.AttenuatorRightToRight;
1122 if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1125 if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1129 for (i = 0; i < samples; i++) {
1132 l = (l * ll + r * rl) >> 7;
1133 r = (r * rr + l * lr) >> 7;
1141 for (i = 0; i < samples; i++) {
1143 l = l * (ll + rl) >> 7;
1144 //r = r * (rr + lr) >> 7;
1152 void cdrReadInterrupt() {
1158 if (cdr.Irq || cdr.Stat) {
1159 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1166 cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1167 cdr.StatP &= ~STATUS_SEEK;
1168 cdr.Result[0] = cdr.StatP;
1169 cdr.Seeked = SEEK_DONE;
1171 ReadTrack(cdr.SetSectorPlay);
1173 buf = CDR_getBuffer();
1178 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1179 memset(cdr.Transfer, 0, DATA_SIZE);
1180 cdr.Stat = DiskError;
1181 cdr.Result[0] |= STATUS_ERROR;
1182 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1186 memcpy(cdr.Transfer, buf, DATA_SIZE);
1187 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1190 CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1192 if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1193 // Firemen 2: Multi-XA files - briefings, cutscenes
1194 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1195 cdr.File = cdr.Transfer[4 + 0];
1196 cdr.Channel = cdr.Transfer[4 + 1];
1200 * Skips playing on channel 255.
1201 * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
1202 * TODO : Check if this is the proper behaviour.
1204 if((cdr.Transfer[4 + 2] & 0x4) &&
1205 (cdr.Transfer[4 + 1] == cdr.Channel) &&
1206 (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
1207 int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1209 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1212 * This is a hack for Megaman X4, Castlevania etc...
1213 * that regressed from the new m_locationChanged and CDROM timings changes.
1214 * It is mostly noticeable in Castevania however and the stuttering can be very jarring.
1216 * According to PCSX redux authors, we shouldn't cause a location change if
1217 * the sector difference is too small.
1218 * I attempted to go with that approach but came empty handed.
1219 * So for now, let's just set cdr.m_locationChanged to false when playing back any ADPCM samples.
1220 * This does not regress Crash Team Racing's intro at least.
1222 cdr.m_locationChanged = FALSE;
1223 SPU_playADPCMchannel(&cdr.Xa);
1224 cdr.FirstSector = 0;
1226 else cdr.FirstSector = -1;
1230 cdr.SetSectorPlay[2]++;
1231 if (cdr.SetSectorPlay[2] == 75) {
1232 cdr.SetSectorPlay[2] = 0;
1233 cdr.SetSectorPlay[1]++;
1234 if (cdr.SetSectorPlay[1] == 60) {
1235 cdr.SetSectorPlay[1] = 0;
1236 cdr.SetSectorPlay[0]++;
1242 uint32_t delay = (cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime;
1243 if (cdr.m_locationChanged) {
1244 CDREAD_INT(delay * 30);
1245 cdr.m_locationChanged = FALSE;
1251 Croc 2: $40 - only FORM1 (*)
1252 Judge Dredd: $C8 - only FORM1 (*)
1253 Sim Theme Park - no adpcm at all (zero)
1256 if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1257 cdr.Stat = DataReady;
1261 // update for CdlGetlocP
1262 ReadTrack(cdr.SetSectorPlay);
1271 bit 5 - 1 result ready
1273 bit 7 - 1 command being processed
1276 unsigned char cdrRead0(void) {
1277 if (cdr.ResultReady)
1287 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1290 CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1292 return psxHu8(0x1800) = cdr.Ctrl;
1295 void cdrWrite0(unsigned char rt) {
1296 CDR_LOG_IO("cdr w0: %02x\n", rt);
1298 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1301 unsigned char cdrRead1(void) {
1302 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1303 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1307 if (cdr.ResultP == cdr.ResultC)
1308 cdr.ResultReady = 0;
1310 CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1312 return psxHu8(0x1801);
1315 void cdrWrite1(unsigned char rt) {
1316 CDR_LOG_IO("cdr w1: %02x\n", rt);
1318 switch (cdr.Ctrl & 3) {
1322 cdr.AttenuatorRightToRightT = rt;
1331 #ifdef CDR_LOG_CMD_IRQ
1332 SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1334 SysPrintf(" Param[%d] = {", cdr.ParamC);
1335 for (i = 0; i < cdr.ParamC; i++)
1336 SysPrintf(" %x,", cdr.Param[i]);
1343 cdr.ResultReady = 0;
1345 // cdr.Stat = NoIntr;
1346 AddIrqQueue(cdr.Cmd, 0x800);
1359 cdr.Seeked = SEEK_DONE;
1365 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1367 cdr.Mode = cdr.Param[0];
1369 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1370 // - fixes choppy movie sound
1371 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1377 unsigned char cdrRead2(void) {
1380 if (cdr.Readed == 0) {
1387 CDR_LOG_IO("cdr r2: %02x\n", ret);
1391 void cdrWrite2(unsigned char rt) {
1392 CDR_LOG_IO("cdr w2: %02x\n", rt);
1394 switch (cdr.Ctrl & 3) {
1396 if (cdr.ParamC < 8) // FIXME: size and wrapping
1397 cdr.Param[cdr.ParamC++] = rt;
1404 cdr.AttenuatorLeftToLeftT = rt;
1407 cdr.AttenuatorRightToLeftT = rt;
1412 unsigned char cdrRead3(void) {
1414 psxHu8(0x1803) = cdr.Stat | 0xE0;
1416 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1418 CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1419 return psxHu8(0x1803);
1422 void cdrWrite3(unsigned char rt) {
1423 CDR_LOG_IO("cdr w3: %02x\n", rt);
1425 switch (cdr.Ctrl & 3) {
1435 cdr.AttenuatorLeftToRightT = rt;
1439 memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1440 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1441 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1442 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1447 if ((rt & 0x80) && cdr.Readed == 0) {
1449 pTransfer = cdr.Transfer;
1451 switch (cdr.Mode & 0x30) {
1452 case MODE_SIZE_2328:
1457 case MODE_SIZE_2340:
1467 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1472 CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1477 if (cdr.Readed == 0) {
1478 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1482 cdsize = (bcr & 0xffff) * 4;
1484 // Ape Escape: bcr = 0001 / 0000
1488 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1489 case MODE_SIZE_2340: cdsize = 2340; break;
1490 case MODE_SIZE_2328: cdsize = 2328; break;
1492 case MODE_SIZE_2048: cdsize = 2048; break;
1497 ptr = (u8 *)PSXM(madr);
1499 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1504 GS CDX: Enhancement CD crash
1507 - Spams DMA3 and gets buffer overrun
1509 size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1514 memcpy(ptr, pTransfer, size);
1517 psxCpu->Clear(madr, cdsize / 4);
1518 pTransfer += cdsize;
1520 if( chcr == 0x11400100 ) {
1521 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1522 CDRDMA_INT( (cdsize/4) / 4 );
1524 else if( chcr == 0x11000000 ) {
1525 // CDRDMA_INT( (cdsize/4) * 1 );
1527 psxRegs.cycle += (cdsize/4) * 24/2;
1533 CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1537 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1541 void cdrDmaInterrupt()
1543 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1545 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1550 static void getCdInfo(void)
1554 CDR_getTN(cdr.ResultTN);
1555 CDR_getTD(0, cdr.SetSectorEnd);
1556 tmp = cdr.SetSectorEnd[0];
1557 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1558 cdr.SetSectorEnd[2] = tmp;
1562 memset(&cdr, 0, sizeof(cdr));
1568 cdr.DriveState = DRIVESTATE_STANDBY;
1569 cdr.StatP = STATUS_ROTATING;
1570 pTransfer = cdr.Transfer;
1572 // BIOS player - default values
1573 cdr.AttenuatorLeftToLeft = 0x80;
1574 cdr.AttenuatorLeftToRight = 0x00;
1575 cdr.AttenuatorRightToLeft = 0x00;
1576 cdr.AttenuatorRightToRight = 0x80;
1581 int cdrFreeze(void *f, int Mode) {
1585 if (Mode == 0 && !Config.Cdda)
1588 cdr.freeze_ver = 0x63647202;
1589 gzfreeze(&cdr, sizeof(cdr));
1592 cdr.ParamP = cdr.ParamC;
1593 tmp = pTransfer - cdr.Transfer;
1596 gzfreeze(&tmp, sizeof(tmp));
1601 pTransfer = cdr.Transfer + tmp;
1603 // read right sub data
1604 tmpp[0] = btoi(cdr.Prev[0]);
1605 tmpp[1] = btoi(cdr.Prev[1]);
1606 tmpp[2] = btoi(cdr.Prev[2]);
1611 if (cdr.freeze_ver < 0x63647202)
1612 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1614 Find_CurTrack(cdr.SetSectorPlay);
1616 CDR_play(cdr.SetSectorPlay);
1619 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1620 // old versions did not latch Reg2, have to fixup..
1621 if (cdr.Reg2 == 0) {
1622 SysPrintf("cdrom: fixing up old savestate\n");
1625 // also did not save Attenuator..
1626 if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1627 | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1629 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1637 void LidInterrupt() {
1640 cdrLidSeekInterrupt();