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Fix regression with CdlPause (#209)
[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 CdlReset 10
62#define CdlMute 11
63#define CdlDemute 12
64#define CdlSetfilter 13
65#define CdlSetmode 14
66#define CdlGetparam 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 CdlInit 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", "CdlReset", "CdlMute",
87 "CdlDemute", "CdlSetfilter", "CdlSetmode", "CdlGetparam",
88 "CdlGetlocL", "CdlGetlocP", "CdlReadT", "CdlGetTN",
89 "CdlGetTD", "CdlSeekL", "CdlSeekP", "CdlSetclock",
90 "CdlGetclock", "CdlTest", "CdlID", "CdlReadS",
91 "CdlInit", 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 /* Gameblabla - Tightening the timings (as taken from Duckstation).
726 * The timings from Duckstation are based upon hardware tests.
727 * Mednafen's timing don't work for Gundam Battle Assault 2 in PAL/50hz mode,
728 * seems to be timing sensitive as it can depend on the CPU's clock speed.
729 * */
730 if (cdr.DriveState != DRIVESTATE_STANDBY)
731 {
732 delay = 7000;
733 }
734 else
735 {
736 delay = (((cdr.Mode & MODE_SPEED) ? 2 : 1) * (1000000));
737 CDRMISC_INT((cdr.Mode & MODE_SPEED) ? cdReadTime / 2 : cdReadTime);
738 }
739 AddIrqQueue(CdlPause + 0x100, delay);
740 cdr.Ctrl |= 0x80;
741 break;
742
743 case CdlPause + 0x100:
744 cdr.StatP &= ~STATUS_READ;
745 cdr.Result[0] = cdr.StatP;
746 cdr.Stat = Complete;
747 break;
748
749 case CdlReset:
750 cdr.Muted = FALSE;
751 cdr.Mode = 0x20; /* This fixes This is Football 2, Pooh's Party lockups */
752 AddIrqQueue(CdlReset + 0x100, 4100000);
753 no_busy_error = 1;
754 start_rotating = 1;
755 break;
756
757 case CdlReset + 0x100:
758 cdr.Stat = Complete;
759 break;
760
761 case CdlMute:
762 cdr.Muted = TRUE;
763 break;
764
765 case CdlDemute:
766 cdr.Muted = FALSE;
767 break;
768
769 case CdlSetfilter:
770 cdr.File = cdr.Param[0];
771 cdr.Channel = cdr.Param[1];
772 break;
773
774 case CdlSetmode:
775 no_busy_error = 1;
776 break;
777
778 case CdlGetparam:
779 /* Gameblabla : According to mednafen, Result size should be 5 and done this way. */
780 SetResultSize(5);
781 cdr.Result[1] = cdr.Mode;
782 cdr.Result[2] = 0;
783 cdr.Result[3] = cdr.File;
784 cdr.Result[4] = cdr.Channel;
785 no_busy_error = 1;
786 break;
787
788 case CdlGetlocL:
789 SetResultSize(8);
790 memcpy(cdr.Result, cdr.Transfer, 8);
791 break;
792
793 case CdlGetlocP:
794 SetResultSize(8);
795 memcpy(&cdr.Result, &cdr.subq, 8);
796
797 if (!cdr.Play && !cdr.Reading)
798 cdr.Result[1] = 0; // HACK?
799 break;
800
801 case CdlReadT: // SetSession?
802 // really long
803 AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
804 start_rotating = 1;
805 break;
806
807 case CdlReadT + 0x100:
808 cdr.Stat = Complete;
809 break;
810
811 case CdlGetTN:
812 SetResultSize(3);
813 if (CDR_getTN(cdr.ResultTN) == -1) {
814 cdr.Stat = DiskError;
815 cdr.Result[0] |= STATUS_ERROR;
816 } else {
817 cdr.Stat = Acknowledge;
818 cdr.Result[1] = itob(cdr.ResultTN[0]);
819 cdr.Result[2] = itob(cdr.ResultTN[1]);
820 }
821 break;
822
823 case CdlGetTD:
824 cdr.Track = btoi(cdr.Param[0]);
825 SetResultSize(4);
826 if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
827 cdr.Stat = DiskError;
828 cdr.Result[0] |= STATUS_ERROR;
829 } else {
830 cdr.Stat = Acknowledge;
831 cdr.Result[0] = cdr.StatP;
832 cdr.Result[1] = itob(cdr.ResultTD[2]);
833 cdr.Result[2] = itob(cdr.ResultTD[1]);
834 /* According to Nocash's documentation, the function doesn't care about ff.
835 * This can be seen also in Mednafen's implementation. */
836 //cdr.Result[3] = itob(cdr.ResultTD[0]);
837 }
838 break;
839
840 case CdlSeekL:
841 case CdlSeekP:
842 StopCdda();
843 StopReading();
844 cdr.StatP |= STATUS_SEEK;
845
846 /*
847 Crusaders of Might and Magic = 0.5x-4x
848 - fix cutscene speech start
849
850 Eggs of Steel = 2x-?
851 - fix new game
852
853 Medievil = ?-4x
854 - fix cutscene speech
855
856 Rockman X5 = 0.5-4x
857 - fix capcom logo
858 */
859 CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
860 cdr.Seeked = SEEK_PENDING;
861 start_rotating = 1;
862 break;
863
864 case CdlTest:
865 switch (cdr.Param[0]) {
866 case 0x20: // System Controller ROM Version
867 SetResultSize(4);
868 memcpy(cdr.Result, Test20, 4);
869 break;
870 case 0x22:
871 SetResultSize(8);
872 memcpy(cdr.Result, Test22, 4);
873 break;
874 case 0x23: case 0x24:
875 SetResultSize(8);
876 memcpy(cdr.Result, Test23, 4);
877 break;
878 }
879 no_busy_error = 1;
880 break;
881
882 case CdlID:
883 AddIrqQueue(CdlID + 0x100, 20480);
884 break;
885
886 case CdlID + 0x100:
887 SetResultSize(8);
888 cdr.Result[0] = cdr.StatP;
889 cdr.Result[1] = 0;
890 cdr.Result[2] = 0;
891 cdr.Result[3] = 0;
892
893 // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
894 if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
895 cdr.Result[1] = 0xc0;
896 }
897 else {
898 if (stat.Type == 2)
899 cdr.Result[1] |= 0x10;
900 if (CdromId[0] == '\0')
901 cdr.Result[1] |= 0x80;
902 }
903 cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
904
905 strncpy((char *)&cdr.Result[4], "PCSX", 4);
906 cdr.Stat = Complete;
907 break;
908
909 case CdlInit:
910 // yes, it really sets STATUS_SHELLOPEN
911 cdr.StatP |= STATUS_SHELLOPEN;
912 cdr.DriveState = DRIVESTATE_RESCAN_CD;
913 CDRLID_INT(20480);
914 no_busy_error = 1;
915 start_rotating = 1;
916 break;
917
918 case CdlGetQ:
919 no_busy_error = 1;
920 break;
921
922 case CdlReadToc:
923 AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
924 no_busy_error = 1;
925 start_rotating = 1;
926 break;
927
928 case CdlReadToc + 0x100:
929 cdr.Stat = Complete;
930 no_busy_error = 1;
931 break;
932
933 case CdlReadN:
934 case CdlReadS:
935 if (cdr.SetlocPending) {
936 seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
937 if(seekTime > 1000000) seekTime = 1000000;
938 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
939 cdr.SetlocPending = 0;
940 cdr.m_locationChanged = TRUE;
941 }
942 Find_CurTrack(cdr.SetSectorPlay);
943
944 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
945 // Read* acts as play for cdda tracks in cdda mode
946 goto do_CdlPlay;
947
948 cdr.Reading = 1;
949 cdr.FirstSector = 1;
950
951 // Fighting Force 2 - update subq time immediately
952 // - fixes new game
953 ReadTrack(cdr.SetSectorPlay);
954
955
956 // Crusaders of Might and Magic - update getlocl now
957 // - fixes cutscene speech
958 {
959 u8 *buf = CDR_getBuffer();
960 if (buf != NULL)
961 memcpy(cdr.Transfer, buf, 8);
962 }
963
964 /*
965 Duke Nukem: Land of the Babes - seek then delay read for one frame
966 - fixes cutscenes
967 C-12 - Final Resistance - doesn't like seek
968 */
969
970 if (cdr.Seeked != SEEK_DONE) {
971 cdr.StatP |= STATUS_SEEK;
972 cdr.StatP &= ~STATUS_READ;
973
974 // Crusaders of Might and Magic - use short time
975 // - fix cutscene speech (startup)
976
977 // ??? - use more accurate seek time later
978 CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1) + seekTime);
979 } else {
980 cdr.StatP |= STATUS_READ;
981 cdr.StatP &= ~STATUS_SEEK;
982
983 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
984 }
985
986 cdr.Result[0] = cdr.StatP;
987 start_rotating = 1;
988 break;
989 case CdlSync:
990 default:
991 CDR_LOG_I("Invalid command: %02x\n", Irq);
992 error = ERROR_INVALIDCMD;
993 // FALLTHROUGH
994
995 set_error:
996 SetResultSize(2);
997 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
998 cdr.Result[1] = error;
999 cdr.Stat = DiskError;
1000 break;
1001 }
1002
1003 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
1004 cdr.DriveState = DRIVESTATE_STANDBY;
1005 cdr.StatP |= STATUS_ROTATING;
1006 }
1007
1008 if (!no_busy_error) {
1009 switch (cdr.DriveState) {
1010 case DRIVESTATE_LID_OPEN:
1011 case DRIVESTATE_RESCAN_CD:
1012 case DRIVESTATE_PREPARE_CD:
1013 SetResultSize(2);
1014 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1015 cdr.Result[1] = ERROR_NOTREADY;
1016 cdr.Stat = DiskError;
1017 break;
1018 }
1019 }
1020
1021finish:
1022 setIrq();
1023 cdr.ParamC = 0;
1024
1025#ifdef CDR_LOG_CMD_IRQ
1026 {
1027 int i;
1028 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1029 !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1030 for (i = 0; i < cdr.ResultC; i++)
1031 SysPrintf("%02x ", cdr.Result[i]);
1032 SysPrintf("\n");
1033 }
1034#endif
1035}
1036
1037#ifdef HAVE_ARMV7
1038 #define ssat32_to_16(v) \
1039 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1040#else
1041 #define ssat32_to_16(v) do { \
1042 if (v < -32768) v = -32768; \
1043 else if (v > 32767) v = 32767; \
1044 } while (0)
1045#endif
1046
1047void cdrAttenuate(s16 *buf, int samples, int stereo)
1048{
1049 int i, l, r;
1050 int ll = cdr.AttenuatorLeftToLeft;
1051 int lr = cdr.AttenuatorLeftToRight;
1052 int rl = cdr.AttenuatorRightToLeft;
1053 int rr = cdr.AttenuatorRightToRight;
1054
1055 if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1056 return;
1057
1058 if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1059 return;
1060
1061 if (stereo) {
1062 for (i = 0; i < samples; i++) {
1063 l = buf[i * 2];
1064 r = buf[i * 2 + 1];
1065 l = (l * ll + r * rl) >> 7;
1066 r = (r * rr + l * lr) >> 7;
1067 ssat32_to_16(l);
1068 ssat32_to_16(r);
1069 buf[i * 2] = l;
1070 buf[i * 2 + 1] = r;
1071 }
1072 }
1073 else {
1074 for (i = 0; i < samples; i++) {
1075 l = buf[i];
1076 l = l * (ll + rl) >> 7;
1077 //r = r * (rr + lr) >> 7;
1078 ssat32_to_16(l);
1079 //ssat32_to_16(r);
1080 buf[i] = l;
1081 }
1082 }
1083}
1084
1085void cdrReadInterrupt() {
1086 u8 *buf;
1087
1088 if (!cdr.Reading)
1089 return;
1090
1091 if (cdr.Irq || cdr.Stat) {
1092 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1093 CDREAD_INT(0x1000);
1094 return;
1095 }
1096
1097 cdr.OCUP = 1;
1098 SetResultSize(1);
1099 cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1100 cdr.StatP &= ~STATUS_SEEK;
1101 cdr.Result[0] = cdr.StatP;
1102 cdr.Seeked = SEEK_DONE;
1103
1104 ReadTrack(cdr.SetSectorPlay);
1105
1106 buf = CDR_getBuffer();
1107 if (buf == NULL)
1108 cdr.RErr = -1;
1109
1110 if (cdr.RErr == -1) {
1111 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1112 memset(cdr.Transfer, 0, DATA_SIZE);
1113 cdr.Stat = DiskError;
1114 cdr.Result[0] |= STATUS_ERROR;
1115 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1116 return;
1117 }
1118
1119 memcpy(cdr.Transfer, buf, DATA_SIZE);
1120 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1121
1122
1123 CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1124
1125 if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1126 // Firemen 2: Multi-XA files - briefings, cutscenes
1127 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1128 cdr.File = cdr.Transfer[4 + 0];
1129 cdr.Channel = cdr.Transfer[4 + 1];
1130 }
1131
1132 /* Gameblabla
1133 * Skips playing on channel 255.
1134 * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
1135 * TODO : Check if this is the proper behaviour.
1136 * */
1137 if((cdr.Transfer[4 + 2] & 0x4) &&
1138 (cdr.Transfer[4 + 1] == cdr.Channel) &&
1139 (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
1140 int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1141 if (!ret) {
1142 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1143 SPU_playADPCMchannel(&cdr.Xa);
1144 cdr.FirstSector = 0;
1145 }
1146 else cdr.FirstSector = -1;
1147 }
1148 }
1149
1150 cdr.SetSectorPlay[2]++;
1151 if (cdr.SetSectorPlay[2] == 75) {
1152 cdr.SetSectorPlay[2] = 0;
1153 cdr.SetSectorPlay[1]++;
1154 if (cdr.SetSectorPlay[1] == 60) {
1155 cdr.SetSectorPlay[1] = 0;
1156 cdr.SetSectorPlay[0]++;
1157 }
1158 }
1159
1160 cdr.Readed = 0;
1161
1162 uint32_t delay = (cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime;
1163 if (cdr.m_locationChanged) {
1164 CDREAD_INT(delay * 30);
1165 cdr.m_locationChanged = FALSE;
1166 } else {
1167 CDREAD_INT(delay);
1168 }
1169
1170 /*
1171 Croc 2: $40 - only FORM1 (*)
1172 Judge Dredd: $C8 - only FORM1 (*)
1173 Sim Theme Park - no adpcm at all (zero)
1174 */
1175
1176 if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1177 cdr.Stat = DataReady;
1178 setIrq();
1179 }
1180
1181 // update for CdlGetlocP
1182 ReadTrack(cdr.SetSectorPlay);
1183}
1184
1185/*
1186cdrRead0:
1187 bit 0,1 - mode
1188 bit 2 - unknown
1189 bit 3 - unknown
1190 bit 4 - unknown
1191 bit 5 - 1 result ready
1192 bit 6 - 1 dma ready
1193 bit 7 - 1 command being processed
1194*/
1195
1196unsigned char cdrRead0(void) {
1197 if (cdr.ResultReady)
1198 cdr.Ctrl |= 0x20;
1199 else
1200 cdr.Ctrl &= ~0x20;
1201
1202 if (cdr.OCUP)
1203 cdr.Ctrl |= 0x40;
1204// else
1205// cdr.Ctrl &= ~0x40;
1206
1207 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1208 cdr.Ctrl |= 0x18;
1209
1210 CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1211
1212 return psxHu8(0x1800) = cdr.Ctrl;
1213}
1214
1215void cdrWrite0(unsigned char rt) {
1216 CDR_LOG_IO("cdr w0: %02x\n", rt);
1217
1218 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1219}
1220
1221unsigned char cdrRead1(void) {
1222 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1223 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1224 else
1225 psxHu8(0x1801) = 0;
1226 cdr.ResultP++;
1227 if (cdr.ResultP == cdr.ResultC)
1228 cdr.ResultReady = 0;
1229
1230 CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1231
1232 return psxHu8(0x1801);
1233}
1234
1235void cdrWrite1(unsigned char rt) {
1236 u8 set_loc[3];
1237 int i;
1238
1239 CDR_LOG_IO("cdr w1: %02x\n", rt);
1240
1241 switch (cdr.Ctrl & 3) {
1242 case 0:
1243 break;
1244 case 3:
1245 cdr.AttenuatorRightToRightT = rt;
1246 return;
1247 default:
1248 return;
1249 }
1250
1251 cdr.Cmd = rt;
1252 cdr.OCUP = 0;
1253
1254#ifdef CDR_LOG_CMD_IRQ
1255 SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1256 if (cdr.ParamC) {
1257 SysPrintf(" Param[%d] = {", cdr.ParamC);
1258 for (i = 0; i < cdr.ParamC; i++)
1259 SysPrintf(" %x,", cdr.Param[i]);
1260 SysPrintf("}\n");
1261 } else {
1262 SysPrintf("\n");
1263 }
1264#endif
1265
1266 cdr.ResultReady = 0;
1267 cdr.Ctrl |= 0x80;
1268 // cdr.Stat = NoIntr;
1269 AddIrqQueue(cdr.Cmd, 0x800);
1270
1271 switch (cdr.Cmd) {
1272 case CdlSetloc:
1273 CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
1274
1275 // MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
1276 if (((cdr.Param[0] & 0x0F) > 0x09) || (cdr.Param[0] > 0x99) || ((cdr.Param[1] & 0x0F) > 0x09) || (cdr.Param[1] >= 0x60) || ((cdr.Param[2] & 0x0F) > 0x09) || (cdr.Param[2] >= 0x75))
1277 {
1278 CDR_LOG("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
1279 }
1280 else
1281 {
1282 for (i = 0; i < 3; i++)
1283 {
1284 set_loc[i] = btoi(cdr.Param[i]);
1285 }
1286
1287 i = msf2sec(cdr.SetSectorPlay);
1288 i = abs(i - msf2sec(set_loc));
1289 if (i > 16)
1290 cdr.Seeked = SEEK_PENDING;
1291
1292 memcpy(cdr.SetSector, set_loc, 3);
1293 cdr.SetSector[3] = 0;
1294 cdr.SetlocPending = 1;
1295 }
1296 break;
1297
1298 case CdlReadN:
1299 case CdlReadS:
1300 case CdlPause:
1301 StopCdda();
1302 StopReading();
1303 break;
1304
1305 case CdlInit:
1306 case CdlReset:
1307 cdr.Seeked = SEEK_DONE;
1308 StopCdda();
1309 StopReading();
1310 break;
1311
1312 case CdlSetmode:
1313 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1314
1315 cdr.Mode = cdr.Param[0];
1316
1317 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1318 // - fixes choppy movie sound
1319 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1320 StopCdda();
1321 break;
1322 }
1323}
1324
1325unsigned char cdrRead2(void) {
1326 unsigned char ret;
1327
1328 if (cdr.Readed == 0) {
1329 ret = 0;
1330 } else {
1331 ret = *pTransfer++;
1332 }
1333
1334 CDR_LOG_IO("cdr r2: %02x\n", ret);
1335 return ret;
1336}
1337
1338void cdrWrite2(unsigned char rt) {
1339 CDR_LOG_IO("cdr w2: %02x\n", rt);
1340
1341 switch (cdr.Ctrl & 3) {
1342 case 0:
1343 if (cdr.ParamC < 8) // FIXME: size and wrapping
1344 cdr.Param[cdr.ParamC++] = rt;
1345 return;
1346 case 1:
1347 cdr.Reg2 = rt;
1348 setIrq();
1349 return;
1350 case 2:
1351 cdr.AttenuatorLeftToLeftT = rt;
1352 return;
1353 case 3:
1354 cdr.AttenuatorRightToLeftT = rt;
1355 return;
1356 }
1357}
1358
1359unsigned char cdrRead3(void) {
1360 if (cdr.Ctrl & 0x1)
1361 psxHu8(0x1803) = cdr.Stat | 0xE0;
1362 else
1363 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1364
1365 CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1366 return psxHu8(0x1803);
1367}
1368
1369void cdrWrite3(unsigned char rt) {
1370 CDR_LOG_IO("cdr w3: %02x\n", rt);
1371
1372 switch (cdr.Ctrl & 3) {
1373 case 0:
1374 break; // transfer
1375 case 1:
1376 cdr.Stat &= ~rt;
1377
1378 if (rt & 0x40)
1379 cdr.ParamC = 0;
1380 return;
1381 case 2:
1382 cdr.AttenuatorLeftToRightT = rt;
1383 return;
1384 case 3:
1385 if (rt & 0x20) {
1386 memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1387 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1388 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1389 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1390 }
1391 return;
1392 }
1393
1394 if ((rt & 0x80) && cdr.Readed == 0) {
1395 cdr.Readed = 1;
1396 pTransfer = cdr.Transfer;
1397
1398 switch (cdr.Mode & 0x30) {
1399 case MODE_SIZE_2328:
1400 case 0x00:
1401 pTransfer += 12;
1402 break;
1403
1404 case MODE_SIZE_2340:
1405 pTransfer += 0;
1406 break;
1407
1408 default:
1409 break;
1410 }
1411 }
1412}
1413
1414void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1415 u32 cdsize;
1416 int size;
1417 u8 *ptr;
1418
1419 CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1420
1421 switch (chcr) {
1422 case 0x11000000:
1423 case 0x11400100:
1424 if (cdr.Readed == 0) {
1425 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1426 break;
1427 }
1428
1429 cdsize = (bcr & 0xffff) * 4;
1430
1431 // Ape Escape: bcr = 0001 / 0000
1432 // - fix boot
1433 if( cdsize == 0 )
1434 {
1435 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1436 case MODE_SIZE_2340: cdsize = 2340; break;
1437 case MODE_SIZE_2328: cdsize = 2328; break;
1438 default:
1439 case MODE_SIZE_2048: cdsize = 2048; break;
1440 }
1441 }
1442
1443
1444 ptr = (u8 *)PSXM(madr);
1445 if (ptr == NULL) {
1446 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1447 break;
1448 }
1449
1450 /*
1451 GS CDX: Enhancement CD crash
1452 - Setloc 0:0:0
1453 - CdlPlay
1454 - Spams DMA3 and gets buffer overrun
1455 */
1456 size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1457 if (size > cdsize)
1458 size = cdsize;
1459 if (size > 0)
1460 {
1461 memcpy(ptr, pTransfer, size);
1462 }
1463
1464 psxCpu->Clear(madr, cdsize / 4);
1465 pTransfer += cdsize;
1466
1467 if( chcr == 0x11400100 ) {
1468 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1469 CDRDMA_INT( (cdsize/4) / 4 );
1470 }
1471 else if( chcr == 0x11000000 ) {
1472 // CDRDMA_INT( (cdsize/4) * 1 );
1473 // halted
1474 psxRegs.cycle += (cdsize/4) * 24/2;
1475 CDRDMA_INT(16);
1476 }
1477 return;
1478
1479 default:
1480 CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1481 break;
1482 }
1483
1484 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1485 DMA_INTERRUPT(3);
1486}
1487
1488void cdrDmaInterrupt()
1489{
1490 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1491 {
1492 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1493 DMA_INTERRUPT(3);
1494 }
1495}
1496
1497static void getCdInfo(void)
1498{
1499 u8 tmp;
1500
1501 CDR_getTN(cdr.ResultTN);
1502 CDR_getTD(0, cdr.SetSectorEnd);
1503 tmp = cdr.SetSectorEnd[0];
1504 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1505 cdr.SetSectorEnd[2] = tmp;
1506}
1507
1508void cdrReset() {
1509 memset(&cdr, 0, sizeof(cdr));
1510 cdr.CurTrack = 1;
1511 cdr.File = 1;
1512 cdr.Channel = 1;
1513 cdr.Reg2 = 0x1f;
1514 cdr.Stat = NoIntr;
1515 cdr.DriveState = DRIVESTATE_STANDBY;
1516 cdr.StatP = STATUS_ROTATING;
1517 pTransfer = cdr.Transfer;
1518 cdr.SetlocPending = 0;
1519 cdr.m_locationChanged = FALSE;
1520
1521 // BIOS player - default values
1522 cdr.AttenuatorLeftToLeft = 0x80;
1523 cdr.AttenuatorLeftToRight = 0x00;
1524 cdr.AttenuatorRightToLeft = 0x00;
1525 cdr.AttenuatorRightToRight = 0x80;
1526
1527 getCdInfo();
1528}
1529
1530int cdrFreeze(void *f, int Mode) {
1531 u32 tmp;
1532 u8 tmpp[3];
1533
1534 if (Mode == 0 && !Config.Cdda)
1535 CDR_stop();
1536
1537 cdr.freeze_ver = 0x63647202;
1538 gzfreeze(&cdr, sizeof(cdr));
1539
1540 if (Mode == 1) {
1541 cdr.ParamP = cdr.ParamC;
1542 tmp = pTransfer - cdr.Transfer;
1543 }
1544
1545 gzfreeze(&tmp, sizeof(tmp));
1546
1547 if (Mode == 0) {
1548 getCdInfo();
1549
1550 pTransfer = cdr.Transfer + tmp;
1551
1552 // read right sub data
1553 tmpp[0] = btoi(cdr.Prev[0]);
1554 tmpp[1] = btoi(cdr.Prev[1]);
1555 tmpp[2] = btoi(cdr.Prev[2]);
1556 cdr.Prev[0]++;
1557 ReadTrack(tmpp);
1558
1559 if (cdr.Play) {
1560 if (cdr.freeze_ver < 0x63647202)
1561 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1562
1563 Find_CurTrack(cdr.SetSectorPlay);
1564 if (!Config.Cdda)
1565 CDR_play(cdr.SetSectorPlay);
1566 }
1567
1568 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1569 // old versions did not latch Reg2, have to fixup..
1570 if (cdr.Reg2 == 0) {
1571 SysPrintf("cdrom: fixing up old savestate\n");
1572 cdr.Reg2 = 7;
1573 }
1574 // also did not save Attenuator..
1575 if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1576 | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1577 {
1578 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1579 }
1580 }
1581 }
1582
1583 return 0;
1584}
1585
1586void LidInterrupt() {
1587 getCdInfo();
1588 StopCdda();
1589 cdrLidSeekInterrupt();
1590}
ARM optimized PCSX fork