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mdec.cpp: Dare to set MDEC_BIAS to 10 (#186)
[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 strncpy((char *)&cdr.Result[4], "PCSX", 4);
892 cdr.Stat = Complete;
893 break;
894
895 case CdlReset:
896 // yes, it really sets STATUS_SHELLOPEN
897 cdr.StatP |= STATUS_SHELLOPEN;
898 cdr.DriveState = DRIVESTATE_RESCAN_CD;
899 CDRLID_INT(20480);
900 no_busy_error = 1;
901 start_rotating = 1;
902 break;
903
904 case CdlGetQ:
905 // TODO?
906 CDR_LOG_I("got CdlGetQ\n");
907 break;
908
909 case CdlReadToc:
910 AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
911 no_busy_error = 1;
912 start_rotating = 1;
913 break;
914
915 case CdlReadToc + 0x100:
916 cdr.Stat = Complete;
917 no_busy_error = 1;
918 break;
919
920 case CdlReadN:
921 case CdlReadS:
922 if (cdr.SetlocPending) {
923 seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
924 if(seekTime > 1000000) seekTime = 1000000;
925 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
926 cdr.SetlocPending = 0;
927 cdr.m_locationChanged = TRUE;
928 }
929 Find_CurTrack(cdr.SetSectorPlay);
930
931 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
932 // Read* acts as play for cdda tracks in cdda mode
933 goto do_CdlPlay;
934
935 cdr.Reading = 1;
936 cdr.FirstSector = 1;
937
938 // Fighting Force 2 - update subq time immediately
939 // - fixes new game
940 ReadTrack(cdr.SetSectorPlay);
941
942
943 // Crusaders of Might and Magic - update getlocl now
944 // - fixes cutscene speech
945 {
946 u8 *buf = CDR_getBuffer();
947 if (buf != NULL)
948 memcpy(cdr.Transfer, buf, 8);
949 }
950
951 /*
952 Duke Nukem: Land of the Babes - seek then delay read for one frame
953 - fixes cutscenes
954 C-12 - Final Resistance - doesn't like seek
955 */
956
957 if (cdr.Seeked != SEEK_DONE) {
958 cdr.StatP |= STATUS_SEEK;
959 cdr.StatP &= ~STATUS_READ;
960
961 // Crusaders of Might and Magic - use short time
962 // - fix cutscene speech (startup)
963
964 // ??? - use more accurate seek time later
965 CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1) + seekTime);
966 } else {
967 cdr.StatP |= STATUS_READ;
968 cdr.StatP &= ~STATUS_SEEK;
969
970 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
971 }
972
973 cdr.Result[0] = cdr.StatP;
974 start_rotating = 1;
975 break;
976
977 default:
978 CDR_LOG_I("Invalid command: %02x\n", Irq);
979 error = ERROR_INVALIDCMD;
980 // FALLTHROUGH
981
982 set_error:
983 SetResultSize(2);
984 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
985 cdr.Result[1] = error;
986 cdr.Stat = DiskError;
987 break;
988 }
989
990 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
991 cdr.DriveState = DRIVESTATE_STANDBY;
992 cdr.StatP |= STATUS_ROTATING;
993 }
994
995 if (!no_busy_error) {
996 switch (cdr.DriveState) {
997 case DRIVESTATE_LID_OPEN:
998 case DRIVESTATE_RESCAN_CD:
999 case DRIVESTATE_PREPARE_CD:
1000 SetResultSize(2);
1001 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1002 cdr.Result[1] = ERROR_NOTREADY;
1003 cdr.Stat = DiskError;
1004 break;
1005 }
1006 }
1007
1008finish:
1009 setIrq();
1010 cdr.ParamC = 0;
1011
1012#ifdef CDR_LOG_CMD_IRQ
1013 {
1014 int i;
1015 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1016 !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1017 for (i = 0; i < cdr.ResultC; i++)
1018 SysPrintf("%02x ", cdr.Result[i]);
1019 SysPrintf("\n");
1020 }
1021#endif
1022}
1023
1024#ifdef HAVE_ARMV7
1025 #define ssat32_to_16(v) \
1026 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1027#else
1028 #define ssat32_to_16(v) do { \
1029 if (v < -32768) v = -32768; \
1030 else if (v > 32767) v = 32767; \
1031 } while (0)
1032#endif
1033
1034void cdrAttenuate(s16 *buf, int samples, int stereo)
1035{
1036 int i, l, r;
1037 int ll = cdr.AttenuatorLeftToLeft;
1038 int lr = cdr.AttenuatorLeftToRight;
1039 int rl = cdr.AttenuatorRightToLeft;
1040 int rr = cdr.AttenuatorRightToRight;
1041
1042 if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1043 return;
1044
1045 if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1046 return;
1047
1048 if (stereo) {
1049 for (i = 0; i < samples; i++) {
1050 l = buf[i * 2];
1051 r = buf[i * 2 + 1];
1052 l = (l * ll + r * rl) >> 7;
1053 r = (r * rr + l * lr) >> 7;
1054 ssat32_to_16(l);
1055 ssat32_to_16(r);
1056 buf[i * 2] = l;
1057 buf[i * 2 + 1] = r;
1058 }
1059 }
1060 else {
1061 for (i = 0; i < samples; i++) {
1062 l = buf[i];
1063 l = l * (ll + rl) >> 7;
1064 //r = r * (rr + lr) >> 7;
1065 ssat32_to_16(l);
1066 //ssat32_to_16(r);
1067 buf[i] = l;
1068 }
1069 }
1070}
1071
1072void cdrReadInterrupt() {
1073 u8 *buf;
1074
1075 if (!cdr.Reading)
1076 return;
1077
1078 if (cdr.Irq || cdr.Stat) {
1079 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1080 CDREAD_INT(0x1000);
1081 return;
1082 }
1083
1084 cdr.OCUP = 1;
1085 SetResultSize(1);
1086 cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1087 cdr.StatP &= ~STATUS_SEEK;
1088 cdr.Result[0] = cdr.StatP;
1089 cdr.Seeked = SEEK_DONE;
1090
1091 ReadTrack(cdr.SetSectorPlay);
1092
1093 buf = CDR_getBuffer();
1094 if (buf == NULL)
1095 cdr.RErr = -1;
1096
1097 if (cdr.RErr == -1) {
1098 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1099 memset(cdr.Transfer, 0, DATA_SIZE);
1100 cdr.Stat = DiskError;
1101 cdr.Result[0] |= STATUS_ERROR;
1102 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1103 return;
1104 }
1105
1106 memcpy(cdr.Transfer, buf, DATA_SIZE);
1107 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1108
1109
1110 CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1111
1112 if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1113 // Firemen 2: Multi-XA files - briefings, cutscenes
1114 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1115 cdr.File = cdr.Transfer[4 + 0];
1116 cdr.Channel = cdr.Transfer[4 + 1];
1117 }
1118
1119 if((cdr.Transfer[4 + 2] & 0x4) &&
1120 (cdr.Transfer[4 + 1] == cdr.Channel) &&
1121 (cdr.Transfer[4 + 0] == cdr.File)) {
1122 int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1123 if (!ret) {
1124 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1125 SPU_playADPCMchannel(&cdr.Xa);
1126 cdr.FirstSector = 0;
1127 }
1128 else cdr.FirstSector = -1;
1129 }
1130 }
1131
1132 cdr.SetSectorPlay[2]++;
1133 if (cdr.SetSectorPlay[2] == 75) {
1134 cdr.SetSectorPlay[2] = 0;
1135 cdr.SetSectorPlay[1]++;
1136 if (cdr.SetSectorPlay[1] == 60) {
1137 cdr.SetSectorPlay[1] = 0;
1138 cdr.SetSectorPlay[0]++;
1139 }
1140 }
1141
1142 cdr.Readed = 0;
1143
1144 uint32_t delay = (cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime;
1145 if (cdr.m_locationChanged) {
1146 CDREAD_INT(delay * 30);
1147 cdr.m_locationChanged = FALSE;
1148 } else {
1149 CDREAD_INT(delay);
1150 }
1151
1152 /*
1153 Croc 2: $40 - only FORM1 (*)
1154 Judge Dredd: $C8 - only FORM1 (*)
1155 Sim Theme Park - no adpcm at all (zero)
1156 */
1157
1158 if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1159 cdr.Stat = DataReady;
1160 setIrq();
1161 }
1162
1163 // update for CdlGetlocP
1164 ReadTrack(cdr.SetSectorPlay);
1165}
1166
1167/*
1168cdrRead0:
1169 bit 0,1 - mode
1170 bit 2 - unknown
1171 bit 3 - unknown
1172 bit 4 - unknown
1173 bit 5 - 1 result ready
1174 bit 6 - 1 dma ready
1175 bit 7 - 1 command being processed
1176*/
1177
1178unsigned char cdrRead0(void) {
1179 if (cdr.ResultReady)
1180 cdr.Ctrl |= 0x20;
1181 else
1182 cdr.Ctrl &= ~0x20;
1183
1184 if (cdr.OCUP)
1185 cdr.Ctrl |= 0x40;
1186// else
1187// cdr.Ctrl &= ~0x40;
1188
1189 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1190 cdr.Ctrl |= 0x18;
1191
1192 CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1193
1194 return psxHu8(0x1800) = cdr.Ctrl;
1195}
1196
1197void cdrWrite0(unsigned char rt) {
1198 CDR_LOG_IO("cdr w0: %02x\n", rt);
1199
1200 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1201}
1202
1203unsigned char cdrRead1(void) {
1204 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1205 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1206 else
1207 psxHu8(0x1801) = 0;
1208 cdr.ResultP++;
1209 if (cdr.ResultP == cdr.ResultC)
1210 cdr.ResultReady = 0;
1211
1212 CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1213
1214 return psxHu8(0x1801);
1215}
1216
1217void cdrWrite1(unsigned char rt) {
1218 u8 set_loc[3];
1219 int i;
1220
1221 CDR_LOG_IO("cdr w1: %02x\n", rt);
1222
1223 switch (cdr.Ctrl & 3) {
1224 case 0:
1225 break;
1226 case 3:
1227 cdr.AttenuatorRightToRightT = rt;
1228 return;
1229 default:
1230 return;
1231 }
1232
1233 cdr.Cmd = rt;
1234 cdr.OCUP = 0;
1235
1236#ifdef CDR_LOG_CMD_IRQ
1237 SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1238 if (cdr.ParamC) {
1239 SysPrintf(" Param[%d] = {", cdr.ParamC);
1240 for (i = 0; i < cdr.ParamC; i++)
1241 SysPrintf(" %x,", cdr.Param[i]);
1242 SysPrintf("}\n");
1243 } else {
1244 SysPrintf("\n");
1245 }
1246#endif
1247
1248 cdr.ResultReady = 0;
1249 cdr.Ctrl |= 0x80;
1250 // cdr.Stat = NoIntr;
1251 AddIrqQueue(cdr.Cmd, 0x800);
1252
1253 switch (cdr.Cmd) {
1254 case CdlSetloc:
1255 for (i = 0; i < 3; i++)
1256 set_loc[i] = btoi(cdr.Param[i]);
1257
1258 i = msf2sec(cdr.SetSectorPlay);
1259 i = abs(i - msf2sec(set_loc));
1260 if (i > 16)
1261 cdr.Seeked = SEEK_PENDING;
1262
1263 memcpy(cdr.SetSector, set_loc, 3);
1264 cdr.SetSector[3] = 0;
1265 cdr.SetlocPending = 1;
1266 break;
1267
1268 case CdlReadN:
1269 case CdlReadS:
1270 case CdlPause:
1271 StopCdda();
1272 StopReading();
1273 break;
1274
1275 case CdlReset:
1276 case CdlInit:
1277 cdr.Seeked = SEEK_DONE;
1278 StopCdda();
1279 StopReading();
1280 break;
1281
1282 case CdlSetmode:
1283 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1284
1285 cdr.Mode = cdr.Param[0];
1286
1287 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1288 // - fixes choppy movie sound
1289 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1290 StopCdda();
1291 break;
1292 }
1293}
1294
1295unsigned char cdrRead2(void) {
1296 unsigned char ret;
1297
1298 if (cdr.Readed == 0) {
1299 ret = 0;
1300 } else {
1301 ret = *pTransfer++;
1302 }
1303
1304 CDR_LOG_IO("cdr r2: %02x\n", ret);
1305 return ret;
1306}
1307
1308void cdrWrite2(unsigned char rt) {
1309 CDR_LOG_IO("cdr w2: %02x\n", rt);
1310
1311 switch (cdr.Ctrl & 3) {
1312 case 0:
1313 if (cdr.ParamC < 8) // FIXME: size and wrapping
1314 cdr.Param[cdr.ParamC++] = rt;
1315 return;
1316 case 1:
1317 cdr.Reg2 = rt;
1318 setIrq();
1319 return;
1320 case 2:
1321 cdr.AttenuatorLeftToLeftT = rt;
1322 return;
1323 case 3:
1324 cdr.AttenuatorRightToLeftT = rt;
1325 return;
1326 }
1327}
1328
1329unsigned char cdrRead3(void) {
1330 if (cdr.Ctrl & 0x1)
1331 psxHu8(0x1803) = cdr.Stat | 0xE0;
1332 else
1333 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1334
1335 CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1336 return psxHu8(0x1803);
1337}
1338
1339void cdrWrite3(unsigned char rt) {
1340 CDR_LOG_IO("cdr w3: %02x\n", rt);
1341
1342 switch (cdr.Ctrl & 3) {
1343 case 0:
1344 break; // transfer
1345 case 1:
1346 cdr.Stat &= ~rt;
1347
1348 if (rt & 0x40)
1349 cdr.ParamC = 0;
1350 return;
1351 case 2:
1352 cdr.AttenuatorLeftToRightT = rt;
1353 return;
1354 case 3:
1355 if (rt & 0x20) {
1356 memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1357 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1358 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1359 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1360 }
1361 return;
1362 }
1363
1364 if ((rt & 0x80) && cdr.Readed == 0) {
1365 cdr.Readed = 1;
1366 pTransfer = cdr.Transfer;
1367
1368 switch (cdr.Mode & 0x30) {
1369 case MODE_SIZE_2328:
1370 case 0x00:
1371 pTransfer += 12;
1372 break;
1373
1374 case MODE_SIZE_2340:
1375 pTransfer += 0;
1376 break;
1377
1378 default:
1379 break;
1380 }
1381 }
1382}
1383
1384void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1385 u32 cdsize;
1386 int size;
1387 u8 *ptr;
1388
1389 CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1390
1391 switch (chcr) {
1392 case 0x11000000:
1393 case 0x11400100:
1394 if (cdr.Readed == 0) {
1395 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1396 break;
1397 }
1398
1399 cdsize = (bcr & 0xffff) * 4;
1400
1401 // Ape Escape: bcr = 0001 / 0000
1402 // - fix boot
1403 if( cdsize == 0 )
1404 {
1405 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1406 case MODE_SIZE_2340: cdsize = 2340; break;
1407 case MODE_SIZE_2328: cdsize = 2328; break;
1408 default:
1409 case MODE_SIZE_2048: cdsize = 2048; break;
1410 }
1411 }
1412
1413
1414 ptr = (u8 *)PSXM(madr);
1415 if (ptr == NULL) {
1416 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1417 break;
1418 }
1419
1420 /*
1421 GS CDX: Enhancement CD crash
1422 - Setloc 0:0:0
1423 - CdlPlay
1424 - Spams DMA3 and gets buffer overrun
1425 */
1426 size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1427 if (size > cdsize)
1428 size = cdsize;
1429 if (size > 0)
1430 {
1431 memcpy(ptr, pTransfer, size);
1432 }
1433
1434 psxCpu->Clear(madr, cdsize / 4);
1435 pTransfer += cdsize;
1436
1437 if( chcr == 0x11400100 ) {
1438 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1439 CDRDMA_INT( (cdsize/4) / 4 );
1440 }
1441 else if( chcr == 0x11000000 ) {
1442 // CDRDMA_INT( (cdsize/4) * 1 );
1443 // halted
1444 psxRegs.cycle += (cdsize/4) * 24/2;
1445 CDRDMA_INT(16);
1446 }
1447 return;
1448
1449 default:
1450 CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1451 break;
1452 }
1453
1454 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1455 DMA_INTERRUPT(3);
1456}
1457
1458void cdrDmaInterrupt()
1459{
1460 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1461 {
1462 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1463 DMA_INTERRUPT(3);
1464 }
1465}
1466
1467static void getCdInfo(void)
1468{
1469 u8 tmp;
1470
1471 CDR_getTN(cdr.ResultTN);
1472 CDR_getTD(0, cdr.SetSectorEnd);
1473 tmp = cdr.SetSectorEnd[0];
1474 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1475 cdr.SetSectorEnd[2] = tmp;
1476}
1477
1478void cdrReset() {
1479 memset(&cdr, 0, sizeof(cdr));
1480 cdr.CurTrack = 1;
1481 cdr.File = 1;
1482 cdr.Channel = 1;
1483 cdr.Reg2 = 0x1f;
1484 cdr.Stat = NoIntr;
1485 cdr.DriveState = DRIVESTATE_STANDBY;
1486 cdr.StatP = STATUS_ROTATING;
1487 pTransfer = cdr.Transfer;
1488 cdr.SetlocPending = 0;
1489 cdr.m_locationChanged = FALSE;
1490
1491 // BIOS player - default values
1492 cdr.AttenuatorLeftToLeft = 0x80;
1493 cdr.AttenuatorLeftToRight = 0x00;
1494 cdr.AttenuatorRightToLeft = 0x00;
1495 cdr.AttenuatorRightToRight = 0x80;
1496
1497 getCdInfo();
1498}
1499
1500int cdrFreeze(void *f, int Mode) {
1501 u32 tmp;
1502 u8 tmpp[3];
1503
1504 if (Mode == 0 && !Config.Cdda)
1505 CDR_stop();
1506
1507 cdr.freeze_ver = 0x63647202;
1508 gzfreeze(&cdr, sizeof(cdr));
1509
1510 if (Mode == 1) {
1511 cdr.ParamP = cdr.ParamC;
1512 tmp = pTransfer - cdr.Transfer;
1513 }
1514
1515 gzfreeze(&tmp, sizeof(tmp));
1516
1517 if (Mode == 0) {
1518 getCdInfo();
1519
1520 pTransfer = cdr.Transfer + tmp;
1521
1522 // read right sub data
1523 tmpp[0] = btoi(cdr.Prev[0]);
1524 tmpp[1] = btoi(cdr.Prev[1]);
1525 tmpp[2] = btoi(cdr.Prev[2]);
1526 cdr.Prev[0]++;
1527 ReadTrack(tmpp);
1528
1529 if (cdr.Play) {
1530 if (cdr.freeze_ver < 0x63647202)
1531 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1532
1533 Find_CurTrack(cdr.SetSectorPlay);
1534 if (!Config.Cdda)
1535 CDR_play(cdr.SetSectorPlay);
1536 }
1537
1538 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1539 // old versions did not latch Reg2, have to fixup..
1540 if (cdr.Reg2 == 0) {
1541 SysPrintf("cdrom: fixing up old savestate\n");
1542 cdr.Reg2 = 7;
1543 }
1544 // also did not save Attenuator..
1545 if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1546 | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1547 {
1548 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1549 }
1550 }
1551 }
1552
1553 return 0;
1554}
1555
1556void LidInterrupt() {
1557 getCdInfo();
1558 StopCdda();
1559 cdrLidSeekInterrupt();
1560}
ARM optimized PCSX fork