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CdlSync should be NULL and return an error. (#199)
[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 /* nocash documentation : "Uh, actually, returns error code 40h = Invalid Command...?" */
52#define CdlNop 1
53#define CdlSetloc 2
54#define CdlPlay 3
55#define CdlForward 4
56#define CdlBackward 5
57#define CdlReadN 6
58#define CdlStandby 7
59#define CdlStop 8
60#define CdlPause 9
61#define 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 CdlNop:
579 if (cdr.DriveState != DRIVESTATE_LID_OPEN)
580 cdr.StatP &= ~STATUS_SHELLOPEN;
581 no_busy_error = 1;
582 break;
583
584 case CdlSetloc:
585 break;
586
587 do_CdlPlay:
588 case CdlPlay:
589 StopCdda();
590 if (cdr.Seeked == SEEK_PENDING) {
591 // XXX: wrong, should seek instead..
592 cdr.Seeked = SEEK_DONE;
593 }
594 if (cdr.SetlocPending) {
595 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
596 cdr.SetlocPending = 0;
597 cdr.m_locationChanged = TRUE;
598 }
599
600 // BIOS CD Player
601 // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
602
603 if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
604 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
605 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
606 }
607 else
608 {
609 int track = btoi( cdr.Param[0] );
610
611 if (track <= cdr.ResultTN[1])
612 cdr.CurTrack = track;
613
614 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
615
616 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
617 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
618 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
619 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
620 }
621 }
622
623 /*
624 Rayman: detect track changes
625 - fixes logo freeze
626
627 Twisted Metal 2: skip PREGAP + starting accurate SubQ
628 - plays tracks without retry play
629
630 Wild 9: skip PREGAP + starting accurate SubQ
631 - plays tracks without retry play
632 */
633 Find_CurTrack(cdr.SetSectorPlay);
634 ReadTrack(cdr.SetSectorPlay);
635 cdr.TrackChanged = FALSE;
636
637 if (!Config.Cdda)
638 CDR_play(cdr.SetSectorPlay);
639
640 // Vib Ribbon: gameplay checks flag
641 cdr.StatP &= ~STATUS_SEEK;
642 cdr.Result[0] = cdr.StatP;
643
644 cdr.StatP |= STATUS_PLAY;
645
646 // BIOS player - set flag again
647 cdr.Play = TRUE;
648
649 CDRMISC_INT( cdReadTime );
650 start_rotating = 1;
651 break;
652
653 case CdlForward:
654 // TODO: error 80 if stopped
655 cdr.Stat = Complete;
656
657 // GameShark CD Player: Calls 2x + Play 2x
658 if( cdr.FastForward == 0 ) cdr.FastForward = 2;
659 else cdr.FastForward++;
660
661 cdr.FastBackward = 0;
662 break;
663
664 case CdlBackward:
665 cdr.Stat = Complete;
666
667 // GameShark CD Player: Calls 2x + Play 2x
668 if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
669 else cdr.FastBackward++;
670
671 cdr.FastForward = 0;
672 break;
673
674 case CdlStandby:
675 if (cdr.DriveState != DRIVESTATE_STOPPED) {
676 error = ERROR_INVALIDARG;
677 goto set_error;
678 }
679 AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
680 start_rotating = 1;
681 break;
682
683 case CdlStandby + 0x100:
684 cdr.Stat = Complete;
685 break;
686
687 case CdlStop:
688 if (cdr.Play) {
689 // grab time for current track
690 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
691
692 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
693 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
694 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
695 }
696
697 StopCdda();
698 StopReading();
699
700 delay = 0x800;
701 if (cdr.DriveState == DRIVESTATE_STANDBY)
702 delay = cdReadTime * 30 / 2;
703
704 cdr.DriveState = DRIVESTATE_STOPPED;
705 AddIrqQueue(CdlStop + 0x100, delay);
706 break;
707
708 case CdlStop + 0x100:
709 cdr.StatP &= ~STATUS_ROTATING;
710 cdr.Result[0] = cdr.StatP;
711 cdr.Stat = Complete;
712 break;
713
714 case CdlPause:
715 /*
716 Gundam Battle Assault 2: much slower (*)
717 - Fixes boot, gameplay
718
719 Hokuto no Ken 2: slower
720 - Fixes intro + subtitles
721
722 InuYasha - Feudal Fairy Tale: slower
723 - Fixes battles
724 */
725 AddIrqQueue(CdlPause + 0x100, cdReadTime * 3);
726 cdr.Ctrl |= 0x80;
727 break;
728
729 case CdlPause + 0x100:
730 cdr.StatP &= ~STATUS_READ;
731 cdr.Result[0] = cdr.StatP;
732 cdr.Stat = Complete;
733 break;
734
735 case CdlInit:
736 AddIrqQueue(CdlInit + 0x100, cdReadTime * 6);
737 no_busy_error = 1;
738 start_rotating = 1;
739 break;
740
741 case CdlInit + 0x100:
742 cdr.Stat = Complete;
743 break;
744
745 case CdlMute:
746 cdr.Muted = TRUE;
747 break;
748
749 case CdlDemute:
750 cdr.Muted = FALSE;
751 break;
752
753 case CdlSetfilter:
754 cdr.File = cdr.Param[0];
755 cdr.Channel = cdr.Param[1];
756 break;
757
758 case CdlSetmode:
759 no_busy_error = 1;
760 break;
761
762 case CdlGetmode:
763 SetResultSize(6);
764 cdr.Result[1] = cdr.Mode;
765 cdr.Result[2] = cdr.File;
766 cdr.Result[3] = cdr.Channel;
767 cdr.Result[4] = 0;
768 cdr.Result[5] = 0;
769 no_busy_error = 1;
770 break;
771
772 case CdlGetlocL:
773 SetResultSize(8);
774 memcpy(cdr.Result, cdr.Transfer, 8);
775 break;
776
777 case CdlGetlocP:
778 SetResultSize(8);
779 memcpy(&cdr.Result, &cdr.subq, 8);
780
781 if (!cdr.Play && !cdr.Reading)
782 cdr.Result[1] = 0; // HACK?
783 break;
784
785 case CdlReadT: // SetSession?
786 // really long
787 AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
788 start_rotating = 1;
789 break;
790
791 case CdlReadT + 0x100:
792 cdr.Stat = Complete;
793 break;
794
795 case CdlGetTN:
796 SetResultSize(3);
797 if (CDR_getTN(cdr.ResultTN) == -1) {
798 cdr.Stat = DiskError;
799 cdr.Result[0] |= STATUS_ERROR;
800 } else {
801 cdr.Stat = Acknowledge;
802 cdr.Result[1] = itob(cdr.ResultTN[0]);
803 cdr.Result[2] = itob(cdr.ResultTN[1]);
804 }
805 break;
806
807 case CdlGetTD:
808 cdr.Track = btoi(cdr.Param[0]);
809 SetResultSize(4);
810 if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
811 cdr.Stat = DiskError;
812 cdr.Result[0] |= STATUS_ERROR;
813 } else {
814 cdr.Stat = Acknowledge;
815 cdr.Result[0] = cdr.StatP;
816 cdr.Result[1] = itob(cdr.ResultTD[2]);
817 cdr.Result[2] = itob(cdr.ResultTD[1]);
818 cdr.Result[3] = itob(cdr.ResultTD[0]);
819 }
820 break;
821
822 case CdlSeekL:
823 case CdlSeekP:
824 StopCdda();
825 StopReading();
826 cdr.StatP |= STATUS_SEEK;
827
828 /*
829 Crusaders of Might and Magic = 0.5x-4x
830 - fix cutscene speech start
831
832 Eggs of Steel = 2x-?
833 - fix new game
834
835 Medievil = ?-4x
836 - fix cutscene speech
837
838 Rockman X5 = 0.5-4x
839 - fix capcom logo
840 */
841 CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
842 cdr.Seeked = SEEK_PENDING;
843 start_rotating = 1;
844 break;
845
846 case CdlTest:
847 switch (cdr.Param[0]) {
848 case 0x20: // System Controller ROM Version
849 SetResultSize(4);
850 memcpy(cdr.Result, Test20, 4);
851 break;
852 case 0x22:
853 SetResultSize(8);
854 memcpy(cdr.Result, Test22, 4);
855 break;
856 case 0x23: case 0x24:
857 SetResultSize(8);
858 memcpy(cdr.Result, Test23, 4);
859 break;
860 }
861 no_busy_error = 1;
862 break;
863
864 case CdlID:
865 AddIrqQueue(CdlID + 0x100, 20480);
866 break;
867
868 case CdlID + 0x100:
869 SetResultSize(8);
870 cdr.Result[0] = cdr.StatP;
871 cdr.Result[1] = 0;
872 cdr.Result[2] = 0;
873 cdr.Result[3] = 0;
874
875 // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
876 if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
877 cdr.Result[1] = 0xc0;
878 }
879 else {
880 if (stat.Type == 2)
881 cdr.Result[1] |= 0x10;
882 if (CdromId[0] == '\0')
883 cdr.Result[1] |= 0x80;
884 }
885 cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
886
887 strncpy((char *)&cdr.Result[4], "PCSX", 4);
888 cdr.Stat = Complete;
889 break;
890
891 case CdlReset:
892 // yes, it really sets STATUS_SHELLOPEN
893 cdr.StatP |= STATUS_SHELLOPEN;
894 cdr.DriveState = DRIVESTATE_RESCAN_CD;
895 CDRLID_INT(20480);
896 no_busy_error = 1;
897 start_rotating = 1;
898 break;
899
900 case CdlGetQ:
901 // TODO?
902 CDR_LOG_I("got CdlGetQ\n");
903 break;
904
905 case CdlReadToc:
906 AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
907 no_busy_error = 1;
908 start_rotating = 1;
909 break;
910
911 case CdlReadToc + 0x100:
912 cdr.Stat = Complete;
913 no_busy_error = 1;
914 break;
915
916 case CdlReadN:
917 case CdlReadS:
918 if (cdr.SetlocPending) {
919 seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
920 if(seekTime > 1000000) seekTime = 1000000;
921 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
922 cdr.SetlocPending = 0;
923 cdr.m_locationChanged = TRUE;
924 }
925 Find_CurTrack(cdr.SetSectorPlay);
926
927 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
928 // Read* acts as play for cdda tracks in cdda mode
929 goto do_CdlPlay;
930
931 cdr.Reading = 1;
932 cdr.FirstSector = 1;
933
934 // Fighting Force 2 - update subq time immediately
935 // - fixes new game
936 ReadTrack(cdr.SetSectorPlay);
937
938
939 // Crusaders of Might and Magic - update getlocl now
940 // - fixes cutscene speech
941 {
942 u8 *buf = CDR_getBuffer();
943 if (buf != NULL)
944 memcpy(cdr.Transfer, buf, 8);
945 }
946
947 /*
948 Duke Nukem: Land of the Babes - seek then delay read for one frame
949 - fixes cutscenes
950 C-12 - Final Resistance - doesn't like seek
951 */
952
953 if (cdr.Seeked != SEEK_DONE) {
954 cdr.StatP |= STATUS_SEEK;
955 cdr.StatP &= ~STATUS_READ;
956
957 // Crusaders of Might and Magic - use short time
958 // - fix cutscene speech (startup)
959
960 // ??? - use more accurate seek time later
961 CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1) + seekTime);
962 } else {
963 cdr.StatP |= STATUS_READ;
964 cdr.StatP &= ~STATUS_SEEK;
965
966 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
967 }
968
969 cdr.Result[0] = cdr.StatP;
970 start_rotating = 1;
971 break;
972 case CdlSync:
973 default:
974 CDR_LOG_I("Invalid command: %02x\n", Irq);
975 error = ERROR_INVALIDCMD;
976 // FALLTHROUGH
977
978 set_error:
979 SetResultSize(2);
980 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
981 cdr.Result[1] = error;
982 cdr.Stat = DiskError;
983 break;
984 }
985
986 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
987 cdr.DriveState = DRIVESTATE_STANDBY;
988 cdr.StatP |= STATUS_ROTATING;
989 }
990
991 if (!no_busy_error) {
992 switch (cdr.DriveState) {
993 case DRIVESTATE_LID_OPEN:
994 case DRIVESTATE_RESCAN_CD:
995 case DRIVESTATE_PREPARE_CD:
996 SetResultSize(2);
997 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
998 cdr.Result[1] = ERROR_NOTREADY;
999 cdr.Stat = DiskError;
1000 break;
1001 }
1002 }
1003
1004finish:
1005 setIrq();
1006 cdr.ParamC = 0;
1007
1008#ifdef CDR_LOG_CMD_IRQ
1009 {
1010 int i;
1011 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1012 !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1013 for (i = 0; i < cdr.ResultC; i++)
1014 SysPrintf("%02x ", cdr.Result[i]);
1015 SysPrintf("\n");
1016 }
1017#endif
1018}
1019
1020#ifdef HAVE_ARMV7
1021 #define ssat32_to_16(v) \
1022 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1023#else
1024 #define ssat32_to_16(v) do { \
1025 if (v < -32768) v = -32768; \
1026 else if (v > 32767) v = 32767; \
1027 } while (0)
1028#endif
1029
1030void cdrAttenuate(s16 *buf, int samples, int stereo)
1031{
1032 int i, l, r;
1033 int ll = cdr.AttenuatorLeftToLeft;
1034 int lr = cdr.AttenuatorLeftToRight;
1035 int rl = cdr.AttenuatorRightToLeft;
1036 int rr = cdr.AttenuatorRightToRight;
1037
1038 if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1039 return;
1040
1041 if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1042 return;
1043
1044 if (stereo) {
1045 for (i = 0; i < samples; i++) {
1046 l = buf[i * 2];
1047 r = buf[i * 2 + 1];
1048 l = (l * ll + r * rl) >> 7;
1049 r = (r * rr + l * lr) >> 7;
1050 ssat32_to_16(l);
1051 ssat32_to_16(r);
1052 buf[i * 2] = l;
1053 buf[i * 2 + 1] = r;
1054 }
1055 }
1056 else {
1057 for (i = 0; i < samples; i++) {
1058 l = buf[i];
1059 l = l * (ll + rl) >> 7;
1060 //r = r * (rr + lr) >> 7;
1061 ssat32_to_16(l);
1062 //ssat32_to_16(r);
1063 buf[i] = l;
1064 }
1065 }
1066}
1067
1068void cdrReadInterrupt() {
1069 u8 *buf;
1070
1071 if (!cdr.Reading)
1072 return;
1073
1074 if (cdr.Irq || cdr.Stat) {
1075 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1076 CDREAD_INT(0x1000);
1077 return;
1078 }
1079
1080 cdr.OCUP = 1;
1081 SetResultSize(1);
1082 cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1083 cdr.StatP &= ~STATUS_SEEK;
1084 cdr.Result[0] = cdr.StatP;
1085 cdr.Seeked = SEEK_DONE;
1086
1087 ReadTrack(cdr.SetSectorPlay);
1088
1089 buf = CDR_getBuffer();
1090 if (buf == NULL)
1091 cdr.RErr = -1;
1092
1093 if (cdr.RErr == -1) {
1094 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1095 memset(cdr.Transfer, 0, DATA_SIZE);
1096 cdr.Stat = DiskError;
1097 cdr.Result[0] |= STATUS_ERROR;
1098 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1099 return;
1100 }
1101
1102 memcpy(cdr.Transfer, buf, DATA_SIZE);
1103 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1104
1105
1106 CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1107
1108 if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1109 // Firemen 2: Multi-XA files - briefings, cutscenes
1110 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1111 cdr.File = cdr.Transfer[4 + 0];
1112 cdr.Channel = cdr.Transfer[4 + 1];
1113 }
1114
1115 /* Gameblabla
1116 * Skips playing on channel 255.
1117 * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
1118 * TODO : Check if this is the proper behaviour.
1119 * */
1120 if((cdr.Transfer[4 + 2] & 0x4) &&
1121 (cdr.Transfer[4 + 1] == cdr.Channel) &&
1122 (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
1123 int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1124 if (!ret) {
1125 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1126 SPU_playADPCMchannel(&cdr.Xa);
1127 cdr.FirstSector = 0;
1128 }
1129 else cdr.FirstSector = -1;
1130 }
1131 }
1132
1133 cdr.SetSectorPlay[2]++;
1134 if (cdr.SetSectorPlay[2] == 75) {
1135 cdr.SetSectorPlay[2] = 0;
1136 cdr.SetSectorPlay[1]++;
1137 if (cdr.SetSectorPlay[1] == 60) {
1138 cdr.SetSectorPlay[1] = 0;
1139 cdr.SetSectorPlay[0]++;
1140 }
1141 }
1142
1143 cdr.Readed = 0;
1144
1145 uint32_t delay = (cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime;
1146 if (cdr.m_locationChanged) {
1147 CDREAD_INT(delay * 30);
1148 cdr.m_locationChanged = FALSE;
1149 } else {
1150 CDREAD_INT(delay);
1151 }
1152
1153 /*
1154 Croc 2: $40 - only FORM1 (*)
1155 Judge Dredd: $C8 - only FORM1 (*)
1156 Sim Theme Park - no adpcm at all (zero)
1157 */
1158
1159 if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1160 cdr.Stat = DataReady;
1161 setIrq();
1162 }
1163
1164 // update for CdlGetlocP
1165 ReadTrack(cdr.SetSectorPlay);
1166}
1167
1168/*
1169cdrRead0:
1170 bit 0,1 - mode
1171 bit 2 - unknown
1172 bit 3 - unknown
1173 bit 4 - unknown
1174 bit 5 - 1 result ready
1175 bit 6 - 1 dma ready
1176 bit 7 - 1 command being processed
1177*/
1178
1179unsigned char cdrRead0(void) {
1180 if (cdr.ResultReady)
1181 cdr.Ctrl |= 0x20;
1182 else
1183 cdr.Ctrl &= ~0x20;
1184
1185 if (cdr.OCUP)
1186 cdr.Ctrl |= 0x40;
1187// else
1188// cdr.Ctrl &= ~0x40;
1189
1190 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1191 cdr.Ctrl |= 0x18;
1192
1193 CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1194
1195 return psxHu8(0x1800) = cdr.Ctrl;
1196}
1197
1198void cdrWrite0(unsigned char rt) {
1199 CDR_LOG_IO("cdr w0: %02x\n", rt);
1200
1201 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1202}
1203
1204unsigned char cdrRead1(void) {
1205 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1206 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1207 else
1208 psxHu8(0x1801) = 0;
1209 cdr.ResultP++;
1210 if (cdr.ResultP == cdr.ResultC)
1211 cdr.ResultReady = 0;
1212
1213 CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1214
1215 return psxHu8(0x1801);
1216}
1217
1218void cdrWrite1(unsigned char rt) {
1219 u8 set_loc[3];
1220 int i;
1221
1222 CDR_LOG_IO("cdr w1: %02x\n", rt);
1223
1224 switch (cdr.Ctrl & 3) {
1225 case 0:
1226 break;
1227 case 3:
1228 cdr.AttenuatorRightToRightT = rt;
1229 return;
1230 default:
1231 return;
1232 }
1233
1234 cdr.Cmd = rt;
1235 cdr.OCUP = 0;
1236
1237#ifdef CDR_LOG_CMD_IRQ
1238 SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1239 if (cdr.ParamC) {
1240 SysPrintf(" Param[%d] = {", cdr.ParamC);
1241 for (i = 0; i < cdr.ParamC; i++)
1242 SysPrintf(" %x,", cdr.Param[i]);
1243 SysPrintf("}\n");
1244 } else {
1245 SysPrintf("\n");
1246 }
1247#endif
1248
1249 cdr.ResultReady = 0;
1250 cdr.Ctrl |= 0x80;
1251 // cdr.Stat = NoIntr;
1252 AddIrqQueue(cdr.Cmd, 0x800);
1253
1254 switch (cdr.Cmd) {
1255 case CdlSetloc:
1256 for (i = 0; i < 3; i++)
1257 set_loc[i] = btoi(cdr.Param[i]);
1258
1259 i = msf2sec(cdr.SetSectorPlay);
1260 i = abs(i - msf2sec(set_loc));
1261 if (i > 16)
1262 cdr.Seeked = SEEK_PENDING;
1263
1264 memcpy(cdr.SetSector, set_loc, 3);
1265 cdr.SetSector[3] = 0;
1266 cdr.SetlocPending = 1;
1267 break;
1268
1269 case CdlReadN:
1270 case CdlReadS:
1271 case CdlPause:
1272 StopCdda();
1273 StopReading();
1274 break;
1275
1276 case CdlReset:
1277 case CdlInit:
1278 cdr.Seeked = SEEK_DONE;
1279 StopCdda();
1280 StopReading();
1281 break;
1282
1283 case CdlSetmode:
1284 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1285
1286 cdr.Mode = cdr.Param[0];
1287
1288 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1289 // - fixes choppy movie sound
1290 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1291 StopCdda();
1292 break;
1293 }
1294}
1295
1296unsigned char cdrRead2(void) {
1297 unsigned char ret;
1298
1299 if (cdr.Readed == 0) {
1300 ret = 0;
1301 } else {
1302 ret = *pTransfer++;
1303 }
1304
1305 CDR_LOG_IO("cdr r2: %02x\n", ret);
1306 return ret;
1307}
1308
1309void cdrWrite2(unsigned char rt) {
1310 CDR_LOG_IO("cdr w2: %02x\n", rt);
1311
1312 switch (cdr.Ctrl & 3) {
1313 case 0:
1314 if (cdr.ParamC < 8) // FIXME: size and wrapping
1315 cdr.Param[cdr.ParamC++] = rt;
1316 return;
1317 case 1:
1318 cdr.Reg2 = rt;
1319 setIrq();
1320 return;
1321 case 2:
1322 cdr.AttenuatorLeftToLeftT = rt;
1323 return;
1324 case 3:
1325 cdr.AttenuatorRightToLeftT = rt;
1326 return;
1327 }
1328}
1329
1330unsigned char cdrRead3(void) {
1331 if (cdr.Ctrl & 0x1)
1332 psxHu8(0x1803) = cdr.Stat | 0xE0;
1333 else
1334 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1335
1336 CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1337 return psxHu8(0x1803);
1338}
1339
1340void cdrWrite3(unsigned char rt) {
1341 CDR_LOG_IO("cdr w3: %02x\n", rt);
1342
1343 switch (cdr.Ctrl & 3) {
1344 case 0:
1345 break; // transfer
1346 case 1:
1347 cdr.Stat &= ~rt;
1348
1349 if (rt & 0x40)
1350 cdr.ParamC = 0;
1351 return;
1352 case 2:
1353 cdr.AttenuatorLeftToRightT = rt;
1354 return;
1355 case 3:
1356 if (rt & 0x20) {
1357 memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1358 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1359 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1360 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1361 }
1362 return;
1363 }
1364
1365 if ((rt & 0x80) && cdr.Readed == 0) {
1366 cdr.Readed = 1;
1367 pTransfer = cdr.Transfer;
1368
1369 switch (cdr.Mode & 0x30) {
1370 case MODE_SIZE_2328:
1371 case 0x00:
1372 pTransfer += 12;
1373 break;
1374
1375 case MODE_SIZE_2340:
1376 pTransfer += 0;
1377 break;
1378
1379 default:
1380 break;
1381 }
1382 }
1383}
1384
1385void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1386 u32 cdsize;
1387 int size;
1388 u8 *ptr;
1389
1390 CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1391
1392 switch (chcr) {
1393 case 0x11000000:
1394 case 0x11400100:
1395 if (cdr.Readed == 0) {
1396 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1397 break;
1398 }
1399
1400 cdsize = (bcr & 0xffff) * 4;
1401
1402 // Ape Escape: bcr = 0001 / 0000
1403 // - fix boot
1404 if( cdsize == 0 )
1405 {
1406 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1407 case MODE_SIZE_2340: cdsize = 2340; break;
1408 case MODE_SIZE_2328: cdsize = 2328; break;
1409 default:
1410 case MODE_SIZE_2048: cdsize = 2048; break;
1411 }
1412 }
1413
1414
1415 ptr = (u8 *)PSXM(madr);
1416 if (ptr == NULL) {
1417 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1418 break;
1419 }
1420
1421 /*
1422 GS CDX: Enhancement CD crash
1423 - Setloc 0:0:0
1424 - CdlPlay
1425 - Spams DMA3 and gets buffer overrun
1426 */
1427 size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1428 if (size > cdsize)
1429 size = cdsize;
1430 if (size > 0)
1431 {
1432 memcpy(ptr, pTransfer, size);
1433 }
1434
1435 psxCpu->Clear(madr, cdsize / 4);
1436 pTransfer += cdsize;
1437
1438 if( chcr == 0x11400100 ) {
1439 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1440 CDRDMA_INT( (cdsize/4) / 4 );
1441 }
1442 else if( chcr == 0x11000000 ) {
1443 // CDRDMA_INT( (cdsize/4) * 1 );
1444 // halted
1445 psxRegs.cycle += (cdsize/4) * 24/2;
1446 CDRDMA_INT(16);
1447 }
1448 return;
1449
1450 default:
1451 CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1452 break;
1453 }
1454
1455 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1456 DMA_INTERRUPT(3);
1457}
1458
1459void cdrDmaInterrupt()
1460{
1461 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1462 {
1463 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1464 DMA_INTERRUPT(3);
1465 }
1466}
1467
1468static void getCdInfo(void)
1469{
1470 u8 tmp;
1471
1472 CDR_getTN(cdr.ResultTN);
1473 CDR_getTD(0, cdr.SetSectorEnd);
1474 tmp = cdr.SetSectorEnd[0];
1475 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1476 cdr.SetSectorEnd[2] = tmp;
1477}
1478
1479void cdrReset() {
1480 memset(&cdr, 0, sizeof(cdr));
1481 cdr.CurTrack = 1;
1482 cdr.File = 1;
1483 cdr.Channel = 1;
1484 cdr.Reg2 = 0x1f;
1485 cdr.Stat = NoIntr;
1486 cdr.DriveState = DRIVESTATE_STANDBY;
1487 cdr.StatP = STATUS_ROTATING;
1488 pTransfer = cdr.Transfer;
1489 cdr.SetlocPending = 0;
1490 cdr.m_locationChanged = FALSE;
1491
1492 // BIOS player - default values
1493 cdr.AttenuatorLeftToLeft = 0x80;
1494 cdr.AttenuatorLeftToRight = 0x00;
1495 cdr.AttenuatorRightToLeft = 0x00;
1496 cdr.AttenuatorRightToRight = 0x80;
1497
1498 getCdInfo();
1499}
1500
1501int cdrFreeze(void *f, int Mode) {
1502 u32 tmp;
1503 u8 tmpp[3];
1504
1505 if (Mode == 0 && !Config.Cdda)
1506 CDR_stop();
1507
1508 cdr.freeze_ver = 0x63647202;
1509 gzfreeze(&cdr, sizeof(cdr));
1510
1511 if (Mode == 1) {
1512 cdr.ParamP = cdr.ParamC;
1513 tmp = pTransfer - cdr.Transfer;
1514 }
1515
1516 gzfreeze(&tmp, sizeof(tmp));
1517
1518 if (Mode == 0) {
1519 getCdInfo();
1520
1521 pTransfer = cdr.Transfer + tmp;
1522
1523 // read right sub data
1524 tmpp[0] = btoi(cdr.Prev[0]);
1525 tmpp[1] = btoi(cdr.Prev[1]);
1526 tmpp[2] = btoi(cdr.Prev[2]);
1527 cdr.Prev[0]++;
1528 ReadTrack(tmpp);
1529
1530 if (cdr.Play) {
1531 if (cdr.freeze_ver < 0x63647202)
1532 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1533
1534 Find_CurTrack(cdr.SetSectorPlay);
1535 if (!Config.Cdda)
1536 CDR_play(cdr.SetSectorPlay);
1537 }
1538
1539 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1540 // old versions did not latch Reg2, have to fixup..
1541 if (cdr.Reg2 == 0) {
1542 SysPrintf("cdrom: fixing up old savestate\n");
1543 cdr.Reg2 = 7;
1544 }
1545 // also did not save Attenuator..
1546 if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1547 | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1548 {
1549 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1550 }
1551 }
1552 }
1553
1554 return 0;
1555}
1556
1557void LidInterrupt() {
1558 getCdInfo();
1559 StopCdda();
1560 cdrLidSeekInterrupt();
1561}
ARM optimized PCSX fork