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Properly fix the extern to const void instead of just void.
[pcsx_rearmed.git] / libpcsxcore / cdrom.c
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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
47cdrStruct cdr;
48static unsigned char *pTransfer;
49
50/* CD-ROM magic numbers */
51#define CdlSync 0
52#define CdlNop 1
53#define CdlSetloc 2
54#define CdlPlay 3
55#define CdlForward 4
56#define CdlBackward 5
57#define CdlReadN 6
58#define CdlStandby 7
59#define CdlStop 8
60#define CdlPause 9
61#define CdlInit 10
62#define CdlMute 11
63#define CdlDemute 12
64#define CdlSetfilter 13
65#define CdlSetmode 14
66#define CdlGetmode 15
67#define CdlGetlocL 16
68#define CdlGetlocP 17
69#define CdlReadT 18
70#define CdlGetTN 19
71#define CdlGetTD 20
72#define CdlSeekL 21
73#define CdlSeekP 22
74#define CdlSetclock 23
75#define CdlGetclock 24
76#define CdlTest 25
77#define CdlID 26
78#define CdlReadS 27
79#define CdlReset 28
80#define CdlGetQ 29
81#define CdlReadToc 30
82
83char *CmdName[0x100]= {
84 "CdlSync", "CdlNop", "CdlSetloc", "CdlPlay",
85 "CdlForward", "CdlBackward", "CdlReadN", "CdlStandby",
86 "CdlStop", "CdlPause", "CdlInit", "CdlMute",
87 "CdlDemute", "CdlSetfilter", "CdlSetmode", "CdlGetmode",
88 "CdlGetlocL", "CdlGetlocP", "CdlReadT", "CdlGetTN",
89 "CdlGetTD", "CdlSeekL", "CdlSeekP", "CdlSetclock",
90 "CdlGetclock", "CdlTest", "CdlID", "CdlReadS",
91 "CdlReset", NULL, "CDlReadToc", NULL
92};
93
94unsigned char Test04[] = { 0 };
95unsigned char Test05[] = { 0 };
96unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
97unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
98unsigned 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
139enum 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
148enum seeked_state {
149 SEEK_PENDING = 0,
150 SEEK_DONE = 1,
151};
152
153static struct CdrStat stat;
154
155static unsigned int msf2sec(const u8 *msf) {
156 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
157}
158
159// for that weird psemu API..
160static unsigned int fsm2sec(const u8 *msf) {
161 return ((msf[2] * 60 + msf[1]) * 75) + msf[0];
162}
163
164static 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
229static 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)
237void 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
308static 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
322static 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
371static 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
415static 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
432static 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
478void 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
545void cdrInterrupt() {
546 u16 Irq = cdr.Irq;
547 int no_busy_error = 0;
548 int start_rotating = 0;
549 int error = 0;
550 int delay;
551 unsigned int seekTime = 0;
552
553 // Reschedule IRQ
554 if (cdr.Stat) {
555 CDR_LOG_I("cdrom: stat hack: %02x %x\n", cdr.Irq, cdr.Stat);
556 CDR_INT(0x1000);
557 return;
558 }
559
560 cdr.Ctrl &= ~0x80;
561
562 // default response
563 SetResultSize(1);
564 cdr.Result[0] = cdr.StatP;
565 cdr.Stat = Acknowledge;
566
567 if (cdr.IrqRepeated) {
568 cdr.IrqRepeated = 0;
569 if (cdr.eCycle > psxRegs.cycle) {
570 CDR_INT(cdr.eCycle);
571 goto finish;
572 }
573 }
574
575 cdr.Irq = 0;
576
577 switch (Irq) {
578 case CdlSync:
579 // TOOD: sometimes/always return error?
580 break;
581
582 case CdlNop:
583 if (cdr.DriveState != DRIVESTATE_LID_OPEN)
584 cdr.StatP &= ~STATUS_SHELLOPEN;
585 no_busy_error = 1;
586 break;
587
588 case CdlSetloc:
589 break;
590
591 do_CdlPlay:
592 case CdlPlay:
593 StopCdda();
594 if (cdr.Seeked == SEEK_PENDING) {
595 // XXX: wrong, should seek instead..
596 cdr.Seeked = SEEK_DONE;
597 }
598 if (cdr.SetlocPending) {
599 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
600 cdr.SetlocPending = 0;
601 cdr.m_locationChanged = TRUE;
602 }
603
604 // BIOS CD Player
605 // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
606
607 if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
608 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
609 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
610 }
611 else
612 {
613 int track = btoi( cdr.Param[0] );
614
615 if (track <= cdr.ResultTN[1])
616 cdr.CurTrack = track;
617
618 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
619
620 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
621 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
622 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
623 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
624 }
625 }
626
627 /*
628 Rayman: detect track changes
629 - fixes logo freeze
630
631 Twisted Metal 2: skip PREGAP + starting accurate SubQ
632 - plays tracks without retry play
633
634 Wild 9: skip PREGAP + starting accurate SubQ
635 - plays tracks without retry play
636 */
637 Find_CurTrack(cdr.SetSectorPlay);
638 ReadTrack(cdr.SetSectorPlay);
639 cdr.TrackChanged = FALSE;
640
641 if (!Config.Cdda)
642 CDR_play(cdr.SetSectorPlay);
643
644 // Vib Ribbon: gameplay checks flag
645 cdr.StatP &= ~STATUS_SEEK;
646 cdr.Result[0] = cdr.StatP;
647
648 cdr.StatP |= STATUS_PLAY;
649
650 // BIOS player - set flag again
651 cdr.Play = TRUE;
652
653 CDRMISC_INT( cdReadTime );
654 start_rotating = 1;
655 break;
656
657 case CdlForward:
658 // TODO: error 80 if stopped
659 cdr.Stat = Complete;
660
661 // GameShark CD Player: Calls 2x + Play 2x
662 if( cdr.FastForward == 0 ) cdr.FastForward = 2;
663 else cdr.FastForward++;
664
665 cdr.FastBackward = 0;
666 break;
667
668 case CdlBackward:
669 cdr.Stat = Complete;
670
671 // GameShark CD Player: Calls 2x + Play 2x
672 if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
673 else cdr.FastBackward++;
674
675 cdr.FastForward = 0;
676 break;
677
678 case CdlStandby:
679 if (cdr.DriveState != DRIVESTATE_STOPPED) {
680 error = ERROR_INVALIDARG;
681 goto set_error;
682 }
683 AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
684 start_rotating = 1;
685 break;
686
687 case CdlStandby + 0x100:
688 cdr.Stat = Complete;
689 break;
690
691 case CdlStop:
692 if (cdr.Play) {
693 // grab time for current track
694 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
695
696 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
697 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
698 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
699 }
700
701 StopCdda();
702 StopReading();
703
704 delay = 0x800;
705 if (cdr.DriveState == DRIVESTATE_STANDBY)
706 delay = cdReadTime * 30 / 2;
707
708 cdr.DriveState = DRIVESTATE_STOPPED;
709 AddIrqQueue(CdlStop + 0x100, delay);
710 break;
711
712 case CdlStop + 0x100:
713 cdr.StatP &= ~STATUS_ROTATING;
714 cdr.Result[0] = cdr.StatP;
715 cdr.Stat = Complete;
716 break;
717
718 case CdlPause:
719 /*
720 Gundam Battle Assault 2: much slower (*)
721 - Fixes boot, gameplay
722
723 Hokuto no Ken 2: slower
724 - Fixes intro + subtitles
725
726 InuYasha - Feudal Fairy Tale: slower
727 - Fixes battles
728 */
729 AddIrqQueue(CdlPause + 0x100, cdReadTime * 3);
730 cdr.Ctrl |= 0x80;
731 break;
732
733 case CdlPause + 0x100:
734 cdr.StatP &= ~STATUS_READ;
735 cdr.Result[0] = cdr.StatP;
736 cdr.Stat = Complete;
737 break;
738
739 case CdlInit:
740 AddIrqQueue(CdlInit + 0x100, cdReadTime * 6);
741 no_busy_error = 1;
742 start_rotating = 1;
743 break;
744
745 case CdlInit + 0x100:
746 cdr.Stat = Complete;
747 break;
748
749 case CdlMute:
750 cdr.Muted = TRUE;
751 break;
752
753 case CdlDemute:
754 cdr.Muted = FALSE;
755 break;
756
757 case CdlSetfilter:
758 cdr.File = cdr.Param[0];
759 cdr.Channel = cdr.Param[1];
760 break;
761
762 case CdlSetmode:
763 no_busy_error = 1;
764 break;
765
766 case CdlGetmode:
767 SetResultSize(6);
768 cdr.Result[1] = cdr.Mode;
769 cdr.Result[2] = cdr.File;
770 cdr.Result[3] = cdr.Channel;
771 cdr.Result[4] = 0;
772 cdr.Result[5] = 0;
773 no_busy_error = 1;
774 break;
775
776 case CdlGetlocL:
777 SetResultSize(8);
778 memcpy(cdr.Result, cdr.Transfer, 8);
779 break;
780
781 case CdlGetlocP:
782 SetResultSize(8);
783 memcpy(&cdr.Result, &cdr.subq, 8);
784
785 if (!cdr.Play && !cdr.Reading)
786 cdr.Result[1] = 0; // HACK?
787 break;
788
789 case CdlReadT: // SetSession?
790 // really long
791 AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
792 start_rotating = 1;
793 break;
794
795 case CdlReadT + 0x100:
796 cdr.Stat = Complete;
797 break;
798
799 case CdlGetTN:
800 SetResultSize(3);
801 if (CDR_getTN(cdr.ResultTN) == -1) {
802 cdr.Stat = DiskError;
803 cdr.Result[0] |= STATUS_ERROR;
804 } else {
805 cdr.Stat = Acknowledge;
806 cdr.Result[1] = itob(cdr.ResultTN[0]);
807 cdr.Result[2] = itob(cdr.ResultTN[1]);
808 }
809 break;
810
811 case CdlGetTD:
812 cdr.Track = btoi(cdr.Param[0]);
813 SetResultSize(4);
814 if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
815 cdr.Stat = DiskError;
816 cdr.Result[0] |= STATUS_ERROR;
817 } else {
818 cdr.Stat = Acknowledge;
819 cdr.Result[0] = cdr.StatP;
820 cdr.Result[1] = itob(cdr.ResultTD[2]);
821 cdr.Result[2] = itob(cdr.ResultTD[1]);
822 cdr.Result[3] = itob(cdr.ResultTD[0]);
823 }
824 break;
825
826 case CdlSeekL:
827 case CdlSeekP:
828 StopCdda();
829 StopReading();
830 cdr.StatP |= STATUS_SEEK;
831
832 /*
833 Crusaders of Might and Magic = 0.5x-4x
834 - fix cutscene speech start
835
836 Eggs of Steel = 2x-?
837 - fix new game
838
839 Medievil = ?-4x
840 - fix cutscene speech
841
842 Rockman X5 = 0.5-4x
843 - fix capcom logo
844 */
845 CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
846 cdr.Seeked = SEEK_PENDING;
847 start_rotating = 1;
848 break;
849
850 case CdlTest:
851 switch (cdr.Param[0]) {
852 case 0x20: // System Controller ROM Version
853 SetResultSize(4);
854 memcpy(cdr.Result, Test20, 4);
855 break;
856 case 0x22:
857 SetResultSize(8);
858 memcpy(cdr.Result, Test22, 4);
859 break;
860 case 0x23: case 0x24:
861 SetResultSize(8);
862 memcpy(cdr.Result, Test23, 4);
863 break;
864 }
865 no_busy_error = 1;
866 break;
867
868 case CdlID:
869 AddIrqQueue(CdlID + 0x100, 20480);
870 break;
871
872 case CdlID + 0x100:
873 SetResultSize(8);
874 cdr.Result[0] = cdr.StatP;
875 cdr.Result[1] = 0;
876 cdr.Result[2] = 0;
877 cdr.Result[3] = 0;
878
879 // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
880 if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
881 cdr.Result[1] = 0xc0;
882 }
883 else {
884 if (stat.Type == 2)
885 cdr.Result[1] |= 0x10;
886 if (CdromId[0] == '\0')
887 cdr.Result[1] |= 0x80;
888 }
889 cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
890
891 /* This adds the string "PCSX" in Playstation bios boot screen */
892 memcpy((char *)&cdr.Result[4], "PCSX", 4);
893 cdr.Stat = Complete;
894 break;
895
896 case CdlReset:
897 // yes, it really sets STATUS_SHELLOPEN
898 cdr.StatP |= STATUS_SHELLOPEN;
899 cdr.DriveState = DRIVESTATE_RESCAN_CD;
900 CDRLID_INT(20480);
901 no_busy_error = 1;
902 start_rotating = 1;
903 break;
904
905 case CdlGetQ:
906 // TODO?
907 CDR_LOG_I("got CdlGetQ\n");
908 break;
909
910 case CdlReadToc:
911 AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
912 no_busy_error = 1;
913 start_rotating = 1;
914 break;
915
916 case CdlReadToc + 0x100:
917 cdr.Stat = Complete;
918 no_busy_error = 1;
919 break;
920
921 case CdlReadN:
922 case CdlReadS:
923 if (cdr.SetlocPending) {
924 seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
925 if(seekTime > 1000000) seekTime = 1000000;
926 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
927 cdr.SetlocPending = 0;
928 cdr.m_locationChanged = TRUE;
929 }
930 Find_CurTrack(cdr.SetSectorPlay);
931
932 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
933 // Read* acts as play for cdda tracks in cdda mode
934 goto do_CdlPlay;
935
936 cdr.Reading = 1;
937 cdr.FirstSector = 1;
938
939 // Fighting Force 2 - update subq time immediately
940 // - fixes new game
941 ReadTrack(cdr.SetSectorPlay);
942
943
944 // Crusaders of Might and Magic - update getlocl now
945 // - fixes cutscene speech
946 {
947 u8 *buf = CDR_getBuffer();
948 if (buf != NULL)
949 memcpy(cdr.Transfer, buf, 8);
950 }
951
952 /*
953 Duke Nukem: Land of the Babes - seek then delay read for one frame
954 - fixes cutscenes
955 C-12 - Final Resistance - doesn't like seek
956 */
957
958 if (cdr.Seeked != SEEK_DONE) {
959 cdr.StatP |= STATUS_SEEK;
960 cdr.StatP &= ~STATUS_READ;
961
962 // Crusaders of Might and Magic - use short time
963 // - fix cutscene speech (startup)
964
965 // ??? - use more accurate seek time later
966 CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1) + seekTime);
967 } else {
968 cdr.StatP |= STATUS_READ;
969 cdr.StatP &= ~STATUS_SEEK;
970
971 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
972 }
973
974 cdr.Result[0] = cdr.StatP;
975 start_rotating = 1;
976 break;
977
978 default:
979 CDR_LOG_I("Invalid command: %02x\n", Irq);
980 error = ERROR_INVALIDCMD;
981 // FALLTHROUGH
982
983 set_error:
984 SetResultSize(2);
985 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
986 cdr.Result[1] = error;
987 cdr.Stat = DiskError;
988 break;
989 }
990
991 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
992 cdr.DriveState = DRIVESTATE_STANDBY;
993 cdr.StatP |= STATUS_ROTATING;
994 }
995
996 if (!no_busy_error) {
997 switch (cdr.DriveState) {
998 case DRIVESTATE_LID_OPEN:
999 case DRIVESTATE_RESCAN_CD:
1000 case DRIVESTATE_PREPARE_CD:
1001 SetResultSize(2);
1002 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1003 cdr.Result[1] = ERROR_NOTREADY;
1004 cdr.Stat = DiskError;
1005 break;
1006 }
1007 }
1008
1009finish:
1010 setIrq();
1011 cdr.ParamC = 0;
1012
1013#ifdef CDR_LOG_CMD_IRQ
1014 {
1015 int i;
1016 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1017 !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1018 for (i = 0; i < cdr.ResultC; i++)
1019 SysPrintf("%02x ", cdr.Result[i]);
1020 SysPrintf("\n");
1021 }
1022#endif
1023}
1024
1025#ifdef HAVE_ARMV7
1026 #define ssat32_to_16(v) \
1027 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1028#else
1029 #define ssat32_to_16(v) do { \
1030 if (v < -32768) v = -32768; \
1031 else if (v > 32767) v = 32767; \
1032 } while (0)
1033#endif
1034
1035void cdrAttenuate(s16 *buf, int samples, int stereo)
1036{
1037 int i, l, r;
1038 int ll = cdr.AttenuatorLeftToLeft;
1039 int lr = cdr.AttenuatorLeftToRight;
1040 int rl = cdr.AttenuatorRightToLeft;
1041 int rr = cdr.AttenuatorRightToRight;
1042
1043 if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1044 return;
1045
1046 if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1047 return;
1048
1049 if (stereo) {
1050 for (i = 0; i < samples; i++) {
1051 l = buf[i * 2];
1052 r = buf[i * 2 + 1];
1053 l = (l * ll + r * rl) >> 7;
1054 r = (r * rr + l * lr) >> 7;
1055 ssat32_to_16(l);
1056 ssat32_to_16(r);
1057 buf[i * 2] = l;
1058 buf[i * 2 + 1] = r;
1059 }
1060 }
1061 else {
1062 for (i = 0; i < samples; i++) {
1063 l = buf[i];
1064 l = l * (ll + rl) >> 7;
1065 //r = r * (rr + lr) >> 7;
1066 ssat32_to_16(l);
1067 //ssat32_to_16(r);
1068 buf[i] = l;
1069 }
1070 }
1071}
1072
1073void cdrReadInterrupt() {
1074 u8 *buf;
1075
1076 if (!cdr.Reading)
1077 return;
1078
1079 if (cdr.Irq || cdr.Stat) {
1080 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1081 CDREAD_INT(0x1000);
1082 return;
1083 }
1084
1085 cdr.OCUP = 1;
1086 SetResultSize(1);
1087 cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1088 cdr.StatP &= ~STATUS_SEEK;
1089 cdr.Result[0] = cdr.StatP;
1090 cdr.Seeked = SEEK_DONE;
1091
1092 ReadTrack(cdr.SetSectorPlay);
1093
1094 buf = CDR_getBuffer();
1095 if (buf == NULL)
1096 cdr.RErr = -1;
1097
1098 if (cdr.RErr == -1) {
1099 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1100 memset(cdr.Transfer, 0, DATA_SIZE);
1101 cdr.Stat = DiskError;
1102 cdr.Result[0] |= STATUS_ERROR;
1103 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1104 return;
1105 }
1106
1107 memcpy(cdr.Transfer, buf, DATA_SIZE);
1108 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1109
1110
1111 CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1112
1113 if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1114 // Firemen 2: Multi-XA files - briefings, cutscenes
1115 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1116 cdr.File = cdr.Transfer[4 + 0];
1117 cdr.Channel = cdr.Transfer[4 + 1];
1118 }
1119
1120 /* Gameblabla
1121 * Skips playing on channel 255.
1122 * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
1123 * TODO : Check if this is the proper behaviour.
1124 * */
1125 if((cdr.Transfer[4 + 2] & 0x4) &&
1126 (cdr.Transfer[4 + 1] == cdr.Channel) &&
1127 (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
1128 int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1129 if (!ret) {
1130 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1131 SPU_playADPCMchannel(&cdr.Xa);
1132 cdr.FirstSector = 0;
1133 }
1134 else cdr.FirstSector = -1;
1135 }
1136 }
1137
1138 cdr.SetSectorPlay[2]++;
1139 if (cdr.SetSectorPlay[2] == 75) {
1140 cdr.SetSectorPlay[2] = 0;
1141 cdr.SetSectorPlay[1]++;
1142 if (cdr.SetSectorPlay[1] == 60) {
1143 cdr.SetSectorPlay[1] = 0;
1144 cdr.SetSectorPlay[0]++;
1145 }
1146 }
1147
1148 cdr.Readed = 0;
1149
1150 uint32_t delay = (cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime;
1151 if (cdr.m_locationChanged) {
1152 CDREAD_INT(delay * 30);
1153 cdr.m_locationChanged = FALSE;
1154 } else {
1155 CDREAD_INT(delay);
1156 }
1157
1158 /*
1159 Croc 2: $40 - only FORM1 (*)
1160 Judge Dredd: $C8 - only FORM1 (*)
1161 Sim Theme Park - no adpcm at all (zero)
1162 */
1163
1164 if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1165 cdr.Stat = DataReady;
1166 setIrq();
1167 }
1168
1169 // update for CdlGetlocP
1170 ReadTrack(cdr.SetSectorPlay);
1171}
1172
1173/*
1174cdrRead0:
1175 bit 0,1 - mode
1176 bit 2 - unknown
1177 bit 3 - unknown
1178 bit 4 - unknown
1179 bit 5 - 1 result ready
1180 bit 6 - 1 dma ready
1181 bit 7 - 1 command being processed
1182*/
1183
1184unsigned char cdrRead0(void) {
1185 if (cdr.ResultReady)
1186 cdr.Ctrl |= 0x20;
1187 else
1188 cdr.Ctrl &= ~0x20;
1189
1190 if (cdr.OCUP)
1191 cdr.Ctrl |= 0x40;
1192// else
1193// cdr.Ctrl &= ~0x40;
1194
1195 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1196 cdr.Ctrl |= 0x18;
1197
1198 CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1199
1200 return psxHu8(0x1800) = cdr.Ctrl;
1201}
1202
1203void cdrWrite0(unsigned char rt) {
1204 CDR_LOG_IO("cdr w0: %02x\n", rt);
1205
1206 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1207}
1208
1209unsigned char cdrRead1(void) {
1210 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1211 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1212 else
1213 psxHu8(0x1801) = 0;
1214 cdr.ResultP++;
1215 if (cdr.ResultP == cdr.ResultC)
1216 cdr.ResultReady = 0;
1217
1218 CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1219
1220 return psxHu8(0x1801);
1221}
1222
1223void cdrWrite1(unsigned char rt) {
1224 u8 set_loc[3];
1225 int i;
1226
1227 CDR_LOG_IO("cdr w1: %02x\n", rt);
1228
1229 switch (cdr.Ctrl & 3) {
1230 case 0:
1231 break;
1232 case 3:
1233 cdr.AttenuatorRightToRightT = rt;
1234 return;
1235 default:
1236 return;
1237 }
1238
1239 cdr.Cmd = rt;
1240 cdr.OCUP = 0;
1241
1242#ifdef CDR_LOG_CMD_IRQ
1243 SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1244 if (cdr.ParamC) {
1245 SysPrintf(" Param[%d] = {", cdr.ParamC);
1246 for (i = 0; i < cdr.ParamC; i++)
1247 SysPrintf(" %x,", cdr.Param[i]);
1248 SysPrintf("}\n");
1249 } else {
1250 SysPrintf("\n");
1251 }
1252#endif
1253
1254 cdr.ResultReady = 0;
1255 cdr.Ctrl |= 0x80;
1256 // cdr.Stat = NoIntr;
1257 AddIrqQueue(cdr.Cmd, 0x800);
1258
1259 switch (cdr.Cmd) {
1260 case CdlSetloc:
1261 for (i = 0; i < 3; i++)
1262 set_loc[i] = btoi(cdr.Param[i]);
1263
1264 i = msf2sec(cdr.SetSectorPlay);
1265 i = abs(i - msf2sec(set_loc));
1266 if (i > 16)
1267 cdr.Seeked = SEEK_PENDING;
1268
1269 memcpy(cdr.SetSector, set_loc, 3);
1270 cdr.SetSector[3] = 0;
1271 cdr.SetlocPending = 1;
1272 break;
1273
1274 case CdlReadN:
1275 case CdlReadS:
1276 case CdlPause:
1277 StopCdda();
1278 StopReading();
1279 break;
1280
1281 case CdlReset:
1282 case CdlInit:
1283 cdr.Seeked = SEEK_DONE;
1284 StopCdda();
1285 StopReading();
1286 break;
1287
1288 case CdlSetmode:
1289 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1290
1291 cdr.Mode = cdr.Param[0];
1292
1293 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1294 // - fixes choppy movie sound
1295 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1296 StopCdda();
1297 break;
1298 }
1299}
1300
1301unsigned char cdrRead2(void) {
1302 unsigned char ret;
1303
1304 if (cdr.Readed == 0) {
1305 ret = 0;
1306 } else {
1307 ret = *pTransfer++;
1308 }
1309
1310 CDR_LOG_IO("cdr r2: %02x\n", ret);
1311 return ret;
1312}
1313
1314void cdrWrite2(unsigned char rt) {
1315 CDR_LOG_IO("cdr w2: %02x\n", rt);
1316
1317 switch (cdr.Ctrl & 3) {
1318 case 0:
1319 if (cdr.ParamC < 8) // FIXME: size and wrapping
1320 cdr.Param[cdr.ParamC++] = rt;
1321 return;
1322 case 1:
1323 cdr.Reg2 = rt;
1324 setIrq();
1325 return;
1326 case 2:
1327 cdr.AttenuatorLeftToLeftT = rt;
1328 return;
1329 case 3:
1330 cdr.AttenuatorRightToLeftT = rt;
1331 return;
1332 }
1333}
1334
1335unsigned char cdrRead3(void) {
1336 if (cdr.Ctrl & 0x1)
1337 psxHu8(0x1803) = cdr.Stat | 0xE0;
1338 else
1339 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1340
1341 CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1342 return psxHu8(0x1803);
1343}
1344
1345void cdrWrite3(unsigned char rt) {
1346 CDR_LOG_IO("cdr w3: %02x\n", rt);
1347
1348 switch (cdr.Ctrl & 3) {
1349 case 0:
1350 break; // transfer
1351 case 1:
1352 cdr.Stat &= ~rt;
1353
1354 if (rt & 0x40)
1355 cdr.ParamC = 0;
1356 return;
1357 case 2:
1358 cdr.AttenuatorLeftToRightT = rt;
1359 return;
1360 case 3:
1361 if (rt & 0x20) {
1362 memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1363 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1364 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1365 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1366 }
1367 return;
1368 }
1369
1370 if ((rt & 0x80) && cdr.Readed == 0) {
1371 cdr.Readed = 1;
1372 pTransfer = cdr.Transfer;
1373
1374 switch (cdr.Mode & 0x30) {
1375 case MODE_SIZE_2328:
1376 case 0x00:
1377 pTransfer += 12;
1378 break;
1379
1380 case MODE_SIZE_2340:
1381 pTransfer += 0;
1382 break;
1383
1384 default:
1385 break;
1386 }
1387 }
1388}
1389
1390void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1391 u32 cdsize;
1392 int size;
1393 u8 *ptr;
1394
1395 CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1396
1397 switch (chcr) {
1398 case 0x11000000:
1399 case 0x11400100:
1400 if (cdr.Readed == 0) {
1401 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1402 break;
1403 }
1404
1405 cdsize = (bcr & 0xffff) * 4;
1406
1407 // Ape Escape: bcr = 0001 / 0000
1408 // - fix boot
1409 if( cdsize == 0 )
1410 {
1411 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1412 case MODE_SIZE_2340: cdsize = 2340; break;
1413 case MODE_SIZE_2328: cdsize = 2328; break;
1414 default:
1415 case MODE_SIZE_2048: cdsize = 2048; break;
1416 }
1417 }
1418
1419
1420 ptr = (u8 *)PSXM(madr);
1421 if (ptr == NULL) {
1422 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1423 break;
1424 }
1425
1426 /*
1427 GS CDX: Enhancement CD crash
1428 - Setloc 0:0:0
1429 - CdlPlay
1430 - Spams DMA3 and gets buffer overrun
1431 */
1432 size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1433 if (size > cdsize)
1434 size = cdsize;
1435 if (size > 0)
1436 {
1437 memcpy(ptr, pTransfer, size);
1438 }
1439
1440 psxCpu->Clear(madr, cdsize / 4);
1441 pTransfer += cdsize;
1442
1443 if( chcr == 0x11400100 ) {
1444 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1445 CDRDMA_INT( (cdsize/4) / 4 );
1446 }
1447 else if( chcr == 0x11000000 ) {
1448 // CDRDMA_INT( (cdsize/4) * 1 );
1449 // halted
1450 psxRegs.cycle += (cdsize/4) * 24/2;
1451 CDRDMA_INT(16);
1452 }
1453 return;
1454
1455 default:
1456 CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1457 break;
1458 }
1459
1460 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1461 DMA_INTERRUPT(3);
1462}
1463
1464void cdrDmaInterrupt()
1465{
1466 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1467 {
1468 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1469 DMA_INTERRUPT(3);
1470 }
1471}
1472
1473static void getCdInfo(void)
1474{
1475 u8 tmp;
1476
1477 CDR_getTN(cdr.ResultTN);
1478 CDR_getTD(0, cdr.SetSectorEnd);
1479 tmp = cdr.SetSectorEnd[0];
1480 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1481 cdr.SetSectorEnd[2] = tmp;
1482}
1483
1484void cdrReset() {
1485 memset(&cdr, 0, sizeof(cdr));
1486 cdr.CurTrack = 1;
1487 cdr.File = 1;
1488 cdr.Channel = 1;
1489 cdr.Reg2 = 0x1f;
1490 cdr.Stat = NoIntr;
1491 cdr.DriveState = DRIVESTATE_STANDBY;
1492 cdr.StatP = STATUS_ROTATING;
1493 pTransfer = cdr.Transfer;
1494 cdr.SetlocPending = 0;
1495 cdr.m_locationChanged = FALSE;
1496
1497 // BIOS player - default values
1498 cdr.AttenuatorLeftToLeft = 0x80;
1499 cdr.AttenuatorLeftToRight = 0x00;
1500 cdr.AttenuatorRightToLeft = 0x00;
1501 cdr.AttenuatorRightToRight = 0x80;
1502
1503 getCdInfo();
1504}
1505
1506int cdrFreeze(void *f, int Mode) {
1507 u32 tmp;
1508 u8 tmpp[3];
1509
1510 if (Mode == 0 && !Config.Cdda)
1511 CDR_stop();
1512
1513 cdr.freeze_ver = 0x63647202;
1514 gzfreeze(&cdr, sizeof(cdr));
1515
1516 if (Mode == 1) {
1517 cdr.ParamP = cdr.ParamC;
1518 tmp = pTransfer - cdr.Transfer;
1519 }
1520
1521 gzfreeze(&tmp, sizeof(tmp));
1522
1523 if (Mode == 0) {
1524 getCdInfo();
1525
1526 pTransfer = cdr.Transfer + tmp;
1527
1528 // read right sub data
1529 tmpp[0] = btoi(cdr.Prev[0]);
1530 tmpp[1] = btoi(cdr.Prev[1]);
1531 tmpp[2] = btoi(cdr.Prev[2]);
1532 cdr.Prev[0]++;
1533 ReadTrack(tmpp);
1534
1535 if (cdr.Play) {
1536 if (cdr.freeze_ver < 0x63647202)
1537 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1538
1539 Find_CurTrack(cdr.SetSectorPlay);
1540 if (!Config.Cdda)
1541 CDR_play(cdr.SetSectorPlay);
1542 }
1543
1544 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1545 // old versions did not latch Reg2, have to fixup..
1546 if (cdr.Reg2 == 0) {
1547 SysPrintf("cdrom: fixing up old savestate\n");
1548 cdr.Reg2 = 7;
1549 }
1550 // also did not save Attenuator..
1551 if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1552 | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1553 {
1554 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1555 }
1556 }
1557 }
1558
1559 return 0;
1560}
1561
1562void LidInterrupt() {
1563 getCdInfo();
1564 StopCdda();
1565 cdrLidSeekInterrupt();
1566}
ARM optimized PCSX fork