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cdrom.c
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cdrom.c
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/***************************************************************************
* Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
/*
* Handles all CD-ROM registers and functions.
*/
#include <assert.h>
#include "cdrom.h"
#include "misc.h"
#include "ppf.h"
#include "psxdma.h"
#include <ogc/lwp_watchdog.h>
#include "Gamecube/DEBUG.h"
/* logging */
#if 0
#define CDR_LOG SysPrintf
#else
#define CDR_LOG(...)
#endif
#if 0
#define CDR_LOG_I SysPrintf
#else
#define CDR_LOG_I(...)
#endif
#if 0
#define CDR_LOG_IO SysPrintf
#else
#define CDR_LOG_IO(...)
#endif
//#define CDR_LOG_CMD_IRQ
static struct {
// unused members maintain savesate compatibility
unsigned char unused0;
unsigned char unused1;
unsigned char IrqMask;
unsigned char unused2;
unsigned char Ctrl;
unsigned char IrqStat;
unsigned char StatP;
unsigned char Transfer[DATA_SIZE];
struct {
unsigned char Track;
unsigned char Index;
unsigned char Relative[3];
unsigned char Absolute[3];
} subq;
unsigned char TrackChanged;
unsigned char ReportDelay;
unsigned char unused3;
unsigned short sectorsRead;
unsigned int freeze_ver;
unsigned char Prev[4];
unsigned char Param[8];
unsigned char Result[16];
unsigned char ParamC;
unsigned char ParamP;
unsigned char ResultC;
unsigned char ResultP;
unsigned char ResultReady;
unsigned char Cmd;
unsigned char SubqForwardSectors;
unsigned char SetlocPending;
u32 Reading;
unsigned char ResultTN[6];
unsigned char ResultTD[4];
unsigned char SetSectorPlay[4];
unsigned char SetSectorEnd[4];
unsigned char SetSector[4];
unsigned char Track;
bool Play, Muted;
int CurTrack;
unsigned char Mode;
unsigned char FileChannelSelected;
unsigned char CurFile, CurChannel;
int FilterFile, FilterChannel;
unsigned char LocL[8];
int unused4;
xa_decode_t Xa;
u16 FifoOffset;
u16 FifoSize;
u16 CmdInProgress;
u8 Irq1Pending;
u8 AdpcmActive;
u32 LastReadSeekCycles;
u8 RetryDetected;
u8 DriveState;
u8 FastForward;
u8 FastBackward;
u8 errorRetryhack;
u8 AttenuatorLeftToLeft, AttenuatorLeftToRight;
u8 AttenuatorRightToRight, AttenuatorRightToLeft;
u8 AttenuatorLeftToLeftT, AttenuatorLeftToRightT;
u8 AttenuatorRightToRightT, AttenuatorRightToLeftT;
unsigned char SetSectorPlayBak[4];
} cdr;
//cdrStruct cdr;
//static unsigned char *pTransfer;
static s16 read_buf[CD_FRAMESIZE_RAW / 2];
static bool isShellopen;
extern char fastLoad; // variable for see if game has reduce load time
/* CD-ROM magic numbers */
#define CdlSync 0 /* nocash documentation : "Uh, actually, returns error code 40h = Invalid Command...?" */
#define CdlNop 1
#define CdlSetloc 2
#define CdlPlay 3
#define CdlForward 4
#define CdlBackward 5
#define CdlReadN 6
#define CdlStandby 7
#define CdlStop 8
#define CdlPause 9
#define CdlReset 10
#define CdlMute 11
#define CdlDemute 12
#define CdlSetfilter 13
#define CdlSetmode 14
#define CdlGetparam 15
#define CdlGetlocL 16
#define CdlGetlocP 17
#define CdlReadT 18
#define CdlGetTN 19
#define CdlGetTD 20
#define CdlSeekL 21
#define CdlSeekP 22
#define CdlSetclock 23
#define CdlGetclock 24
#define CdlTest 25
#define CdlID 26
#define CdlReadS 27
#define CdlInit 28
#define CdlGetQ 29
#define CdlReadToc 30
char *CmdName[0x100]= {
"CdlSync", "CdlNop", "CdlSetloc", "CdlPlay",
"CdlForward", "CdlBackward", "CdlReadN", "CdlStandby",
"CdlStop", "CdlPause", "CdlReset", "CdlMute",
"CdlDemute", "CdlSetfilter", "CdlSetmode", "CdlGetparam",
"CdlGetlocL", "CdlGetlocP", "CdlReadT", "CdlGetTN",
"CdlGetTD", "CdlSeekL", "CdlSeekP", "CdlSetclock",
"CdlGetclock", "CdlTest", "CdlID", "CdlReadS",
"CdlInit", NULL, "CDlReadToc", NULL
};
unsigned char Test04[] = { 0 };
unsigned char Test05[] = { 0 };
unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
unsigned char Test23[] = { 0x43, 0x58, 0x44, 0x32, 0x39 ,0x34, 0x30, 0x51 };
unsigned char btoiBuf[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,
20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,40,41,42,43,
44,45,46,47,48,49,50,51,52,53,54,55,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,60,61,62,63,64,65,66,67,
68,69,70,71,72,73,74,75,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,80,81,82,83,84,85,86,87,88,89,90,91,
92,93,94,95,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,100,101,102,103,104,105,106,107,108,109,110,
111,112,113,114,115,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,120,121,122,123,124,125,126,
127,128,129,130,131,132,133,134,135,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,140,141,142,
143,144,145,146,147,148,149,150,151,152,153,154,155,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165
};
unsigned char itobBuf[] = {0,1,2,3,4,5,6,7,8,9,16,17,18,19,20,21,22,23,24,25,32,33,34,35,36,37,38,39,40,41,48,49,50,
51,52,53,54,55,56,57,64,65,66,67,68,69,70,71,72,73,80,81,82,83,84,85,86,87,88,89,96,97,98,99,100,101,102,103,104,
105,112,113,114,115,116,117,118,119,120,121,128,129,130,131,132,133,134,135,136,137,144,145,146,147,148,149,150,
151,152,153,160,161,162,163,164,165,166,167,168,169,176,177,178,179,180,181,182,183,184,185,192,193,194,195,196,
197,198,199,200,201,208,209,210,211,212,213,214,215,216,217,224,225,226,227,228,229,230,231,232,233,240,241,242,
243,244,245,246,247,248,249,0,1,2,3,4,5,6,7,8,9,16,17,18,19,20,21,22,23,24,25,32,33,34,35,36,37,38,39,40,41,48,49,
50,51,52,53,54,55,56,57,64,65,66,67,68,69,70,71,72,73,80,81,82,83,84,85,86,87,88,89,96,97,98,99,100,101,102,103,104,
105,112,113,114,115,116,117,118,119,120,121,128,129,130,131,132,133,134,135,136,137,144,145,146,147,148,149
};
int msf2SectM[] = {
0,4500,9000,13500,18000,22500,27000,31500,36000,40500,45000,49500,54000,58500,63000,67500,45000,49500,54000,58500,63000,67500,72000,76500,81000,85500,90000,
94500,99000,103500,108000,112500,90000,94500,99000,103500,108000,112500,117000,121500,126000,130500,135000,139500,144000,148500,153000,157500,135000,139500,
144000,148500,153000,157500,162000,166500,171000,175500,180000,184500,189000,193500,198000,202500,180000,184500,189000,193500,198000,202500,207000,211500,216000,
220500,225000,229500,234000,238500,243000,247500,225000,229500,234000,238500,243000,247500,252000,256500,261000,265500,270000,274500,279000,283500,288000,292500,
270000,274500,279000,283500,288000,292500,297000,301500,306000,310500,315000,319500,324000,328500,333000,337500,315000,319500,324000,328500,333000,337500,342000,
346500,351000,355500,360000,364500,369000,373500,378000,382500,360000,364500,369000,373500,378000,382500,387000,391500,396000,400500,405000,409500,414000,418500,
423000,427500,405000,409500,414000,418500,423000,427500,432000,436500,441000,445500,450000,454500,459000,463500,468000,472500,450000,454500,459000,463500,468000,
472500,477000,481500,486000,490500,495000,499500,504000,508500,513000,517500,495000,499500,504000,508500,513000,517500,522000,526500,531000,535500,540000,544500,
549000,553500,558000,562500,540000,544500,549000,553500,558000,562500,567000,571500,576000,580500,585000,589500,594000,598500,603000,607500,585000,589500,594000,
598500,603000,607500,612000,616500,621000,625500,630000,634500,639000,643500,648000,652500,630000,634500,639000,643500,648000,652500,657000,661500,666000,670500,
675000,679500,684000,688500,693000,697500,675000,679500,684000,688500,693000,697500,702000,706500,711000,715500,720000,724500,729000,733500,738000,742500
};
int msf2SectS[] = {
0,75,150,225,300,375,450,525,600,675,750,825,900,975,1050,1125,750,825,900,975,1050,1125,1200,1275,1350,1425,1500,1575,1650,1725,1800,1875,1500,1575,1650,1725,
1800,1875,1950,2025,2100,2175,2250,2325,2400,2475,2550,2625,2250,2325,2400,2475,2550,2625,2700,2775,2850,2925,3000,3075,3150,3225,3300,3375,3000,3075,3150,3225,
3300,3375,3450,3525,3600,3675,3750,3825,3900,3975,4050,4125,3750,3825,3900,3975,4050,4125,4200,4275,4350,4425,4500,4575,4650,4725,4800,4875,4500,4575,4650,4725,
4800,4875,4950,5025,5100,5175,5250,5325,5400,5475,5550,5625,5250,5325,5400,5475,5550,5625,5700,5775,5850,5925,6000,6075,6150,6225,6300,6375,6000,6075,6150,6225,
6300,6375,6450,6525,6600,6675,6750,6825,6900,6975,7050,7125,6750,6825,6900,6975,7050,7125,7200,7275,7350,7425,7500,7575,7650,7725,7800,7875,7500,7575,7650,7725,
7800,7875,7950,8025,8100,8175,8250,8325,8400,8475,8550,8625,8250,8325,8400,8475,8550,8625,8700,8775,8850,8925,9000,9075,9150,9225,9300,9375,9000,9075,9150,9225,
9300,9375,9450,9525,9600,9675,9750,9825,9900,9975,10050,10125,9750,9825,9900,9975,10050,10125,10200,10275,10350,10425,10500,10575,10650,10725,10800,10875,10500,
10575,10650,10725,10800,10875,10950,11025,11100,11175,11250,11325,11400,11475,11550,11625,11250,11325,11400,11475,11550,11625,11700,11775,11850,11925,12000,12075,
12150,12225,12300,12375
};
// cdr.IrqStat:
#define NoIntr 0
#define DataReady 1
#define Complete 2
#define Acknowledge 3
#define DataEnd 4
#define DiskError 5
/* Modes flags */
#define MODE_SPEED (1<<7) // 0x80
#define MODE_STRSND (1<<6) // 0x40 ADPCM on/off
#define MODE_SIZE_2340 (1<<5) // 0x20
#define MODE_SIZE_2328 (1<<4) // 0x10
#define MODE_SIZE_2048 (0<<4) // 0x00
#define MODE_SF (1<<3) // 0x08 channel on/off
#define MODE_REPORT (1<<2) // 0x04
#define MODE_AUTOPAUSE (1<<1) // 0x02
#define MODE_CDDA (1<<0) // 0x01
/* Status flags */
#define STATUS_PLAY (1<<7) // 0x80
#define STATUS_SEEK (1<<6) // 0x40
#define STATUS_READ (1<<5) // 0x20
#define STATUS_SHELLOPEN (1<<4) // 0x10
#define STATUS_UNKNOWN3 (1<<3) // 0x08
#define STATUS_SEEKERROR (1<<2) // 0x04
#define STATUS_ROTATING (1<<1) // 0x02
#define STATUS_ERROR (1<<0) // 0x01
/* Errors */
#define ERROR_NOTREADY (1<<7) // 0x80
#define ERROR_INVALIDCMD (1<<6) // 0x40
#define ERROR_BAD_ARGNUM (1<<5) // 0x20
#define ERROR_BAD_ARGVAL (1<<4) // 0x10
#define ERROR_SHELLOPEN (1<<3) // 0x08
// 1x = 75 sectors per second
// PSXCLK = 1 sec in the ps
// so (PSXCLK / 75) = cdr read time (linuzappz)
#define cdReadTime (PSXCLK / 75) // OK
#define WaitTime1st (0x800)
#define MinSeekTime 50000
#define LOCL_INVALID 0xff
#define SUBQ_FORWARD_SECTORS 2u
enum drive_state {
DRIVESTATE_STANDBY = 0, // different from paused
DRIVESTATE_LID_OPEN,
DRIVESTATE_RESCAN_CD,
DRIVESTATE_PREPARE_CD,
DRIVESTATE_STOPPED,
DRIVESTATE_PAUSED,
DRIVESTATE_PLAY_READ,
DRIVESTATE_SEEK,
};
static struct CdrStat cdr_stat;
int msf2SectMNoItob[] = {
0,4500,9000,13500,18000,22500,27000,31500,36000,40500,45000,49500,54000,58500,63000,67500,72000,76500,81000,85500,90000,94500,99000,103500,108000,112500,117000,
121500,126000,130500,135000,139500,144000,148500,153000,157500,162000,166500,171000,175500,180000,184500,189000,193500,198000,202500,207000,211500,216000,220500,
225000,229500,234000,238500,243000,247500,252000,256500,261000,265500,270000,274500,279000,283500,288000,292500,297000,301500,306000,310500,315000,319500,324000,
328500,333000,337500,342000,346500,351000,355500,360000,364500,369000,373500,378000,382500,387000,391500,396000,400500,405000,409500,414000,418500,423000,427500,
432000,436500,441000,445500,450000,454500,459000,463500,468000,472500,477000,481500,486000,490500,495000,499500,504000,508500,513000,517500,522000,526500,531000,
535500,540000,544500,549000,553500,558000,562500,567000,571500,576000,580500,585000,589500,594000,598500,603000,607500,612000,616500,621000,625500,630000,634500,
639000,643500,648000,652500,657000,661500,666000,670500,675000,679500,684000,688500,693000,697500,702000,706500,711000,715500,720000,724500,729000,733500,738000,
742500,747000,751500,756000,760500,765000,769500,774000,778500,783000,787500,792000,796500,801000,805500,810000,814500,819000,823500,828000,832500,837000,841500,
846000,850500,855000,859500,864000,868500,873000,877500,882000,886500,891000,895500,900000,904500,909000,913500,918000,922500,927000,931500,936000,940500,945000,
949500,954000,958500,963000,967500,972000,976500,981000,985500,990000,994500,999000,1003500,1008000,1012500,1017000,1021500,1026000,1030500,1035000,1039500,1044000,
1048500,1053000,1057500,1062000,1066500,1071000,1075500,1080000,1084500,1089000,1093500,1098000,1102500,1107000,1111500,1116000,1120500,1125000,1129500,1134000,1138500,1143000,1147500
};
int msf2SectSNoItob[] = {
0,75,150,225,300,375,450,525,600,675,750,825,900,975,1050,1125,1200,1275,1350,1425,1500,1575,1650,1725,1800,1875,1950,2025,2100,2175,2250,2325,2400,2475,2550,2625,
2700,2775,2850,2925,3000,3075,3150,3225,3300,3375,3450,3525,3600,3675,3750,3825,3900,3975,4050,4125,4200,4275,4350,4425,4500,4575,4650,4725,4800,4875,4950,5025,5100,
5175,5250,5325,5400,5475,5550,5625,5700,5775,5850,5925,6000,6075,6150,6225,6300,6375,6450,6525,6600,6675,6750,6825,6900,6975,7050,7125,7200,7275,7350,7425,7500,7575,
7650,7725,7800,7875,7950,8025,8100,8175,8250,8325,8400,8475,8550,8625,8700,8775,8850,8925,9000,9075,9150,9225,9300,9375,9450,9525,9600,9675,9750,9825,9900,9975,10050,
10125,10200,10275,10350,10425,10500,10575,10650,10725,10800,10875,10950,11025,11100,11175,11250,11325,11400,11475,11550,11625,11700,11775,11850,11925,12000,12075,12150,
12225,12300,12375,12450,12525,12600,12675,12750,12825,12900,12975,13050,13125,13200,13275,13350,13425,13500,13575,13650,13725,13800,13875,13950,14025,14100,14175,14250,
14325,14400,14475,14550,14625,14700,14775,14850,14925,15000,15075,15150,15225,15300,15375,15450,15525,15600,15675,15750,15825,15900,15975,16050,16125,16200,16275,16350,
16425,16500,16575,16650,16725,16800,16875,16950,17025,17100,17175,17250,17325,17400,17475,17550,17625,17700,17775,17850,17925,18000,18075,18150,18225,18300,18375,18450,
18525,18600,18675,18750,18825,18900,18975,19050,19125
};
static unsigned int msf2sec(const u8 *msf) {
//return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
return msf2SectMNoItob[msf[0]] + msf2SectSNoItob[msf[1]] + msf[2];
}
// for that weird psemu API..
static unsigned int fsm2sec(const u8 *msf) {
//return ((msf[2] * 60 + msf[1]) * 75) + msf[0];
return msf2SectMNoItob[msf[2]] + msf2SectSNoItob[msf[1]] + msf[0];
}
static void sec2msf(unsigned int s, u8 *msf) {
msf[0] = s / 75 / 60;
//s = s - msf[0] * 75 * 60;
s = s - msf2SectMNoItob[msf[0]];
msf[1] = s / 75;
//s = s - msf[1] * 75;
s = s - msf2SectSNoItob[msf[1]];
msf[2] = s;
}
// cdrPlayReadInterrupt
#define CDRPLAYREAD_INT(eCycle, isFirst) { \
u32 e_ = eCycle; \
psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
if (isFirst) \
psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
else \
psxRegs.intCycle[PSXINT_CDREAD].sCycle += psxRegs.intCycle[PSXINT_CDREAD].cycle; \
psxRegs.intCycle[PSXINT_CDREAD].cycle = e_; \
set_event_raw_abs(PSXINT_CDREAD, psxRegs.intCycle[PSXINT_CDREAD].sCycle + e_); \
}
#define StopReading() { \
cdr.Reading = 0; \
psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
}
#define StopCdda() { \
if (cdr.Play && !Config.Cdda) CDR_stop(); \
cdr.Play = FALSE; \
cdr.FastForward = 0; \
cdr.FastBackward = 0; \
}
#define SetPlaySeekRead(x, f) { \
x &= ~(STATUS_PLAY | STATUS_SEEK | STATUS_READ); \
x |= f; \
}
#define SetResultSize_(size) { \
cdr.ResultP = 0; \
cdr.ResultC = size; \
cdr.ResultReady = 1; \
}
#define SetResultSize(size) { \
if (cdr.ResultP < cdr.ResultC) \
CDR_LOG_I("overwriting result, len=%u\n", cdr.ResultC); \
SetResultSize_(size); \
}
static void setIrq(u8 irq, int log_cmd)
{
u8 old = cdr.IrqStat & cdr.IrqMask ? 1 : 0;
u8 new_ = irq & cdr.IrqMask ? 1 : 0;
cdr.IrqStat = irq;
if ((old ^ new_) & new_)
psxHu32ref(0x1070) |= SWAP32((u32)0x4);
}
// timing used in this function was taken from tests on real hardware
// (yes it's slow, but you probably don't want to modify it)
void cdrLidSeekInterrupt(void)
{
switch (cdr.DriveState) {
default:
#ifdef DISP_DEBUG
sprintf(txtbuffer, "cdrLidSeekInterrupt=default ");
DEBUG_print(txtbuffer, DBG_CDR4);
#endif // DISP_DEBUG
case DRIVESTATE_STANDBY:
#ifdef DISP_DEBUG
sprintf(txtbuffer, "cdrLidSeekInterrupt=DRIVESTATE_STANDBY: %x ", cdr_stat.Status);
DEBUG_print(txtbuffer, DBG_CDR4);
#endif // DISP_DEBUG
StopCdda();
//StopReading();
SetPlaySeekRead(cdr.StatP, 0);
if (CDR_getStatus(&cdr_stat) == -1)
return;
#ifdef DISP_DEBUG
sprintf(txtbuffer, "cdrLidSeekInterrupt=DRIVESTATE_STANDBY2: %x %d ", cdr_stat.Status, isShellopen);
DEBUG_print(txtbuffer, DBG_CDR4);
#endif // DISP_DEBUG
if (cdr_stat.Status & STATUS_SHELLOPEN)
{
//isShellopen = false;
memset(cdr.Prev, 0xff, sizeof(cdr.Prev));
cdr.DriveState = DRIVESTATE_LID_OPEN;
set_event(PSXINT_CDRLID, WaitTime1st);
}
break;
case DRIVESTATE_LID_OPEN:
#ifdef DISP_DEBUG
sprintf(txtbuffer, "cdrLidSeekInterrupt=DRIVESTATE_LID_OPEN: %x ", cdr.StatP);
DEBUG_print(txtbuffer, DBG_CDR4);
#endif // DISP_DEBUG
if (CDR_getStatus(&cdr_stat) == -1)
cdr_stat.Status &= ~STATUS_SHELLOPEN;
// 02, 12, 10
if (!(cdr.StatP & STATUS_SHELLOPEN)) {
StopReading();
SetPlaySeekRead(cdr.StatP, 0);
cdr.StatP |= STATUS_SHELLOPEN;
// IIRC this sometimes doesn't happen on real hw
// (when lots of commands are sent?)
SetResultSize(2);
cdr.Result[0] = cdr.StatP | STATUS_SEEKERROR;
cdr.Result[1] = ERROR_SHELLOPEN;
if (cdr.CmdInProgress) {
psxRegs.interrupt &= ~(1 << PSXINT_CDR);
cdr.CmdInProgress = 0;
cdr.Result[0] = cdr.StatP | STATUS_ERROR;
cdr.Result[1] = ERROR_NOTREADY;
}
setIrq(DiskError, 0x1006);
set_event(PSXINT_CDRLID, cdReadTime * 30);
break;
}
else if (cdr.StatP & STATUS_ROTATING) {
cdr.StatP &= ~STATUS_ROTATING;
}
else if (!(cdr_stat.Status & STATUS_SHELLOPEN)) {
// closed now
CheckCdrom();
// cdr.StatP STATUS_SHELLOPEN is "sticky"
// and is only cleared by CdlNop
cdr.DriveState = DRIVESTATE_RESCAN_CD;
set_event(PSXINT_CDRLID, cdReadTime * 105);
break;
}
// recheck for close
set_event(PSXINT_CDRLID, cdReadTime * 3);
break;
case DRIVESTATE_RESCAN_CD:
#ifdef DISP_DEBUG
sprintf(txtbuffer, "cdrLidSeekInterrupt=DRIVESTATE_RESCAN_CD: %x ", cdr.StatP);
DEBUG_print(txtbuffer, DBG_CDR4);
#endif // DISP_DEBUG
cdr.StatP |= STATUS_ROTATING;
cdr.DriveState = DRIVESTATE_PREPARE_CD;
// this is very long on real hardware, over 6 seconds
// make it a bit faster here...
set_event(PSXINT_CDRLID, cdReadTime * 150);
break;
case DRIVESTATE_PREPARE_CD:
#ifdef DISP_DEBUG
sprintf(txtbuffer, "cdrLidSeekInterrupt=DRIVESTATE_PREPARE_CD: %x ", cdr.StatP);
DEBUG_print(txtbuffer, DBG_CDR4);
#endif // DISP_DEBUG
if (cdr.StatP & STATUS_SEEK) {
SetPlaySeekRead(cdr.StatP, 0);
cdr.DriveState = DRIVESTATE_STANDBY;
}
else {
SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
set_event(PSXINT_CDRLID, cdReadTime * 26);
}
break;
}
}
static void Find_CurTrack(const u8 *time)
{
int current, sect;
current = msf2sec(time);
for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
sect = fsm2sec(cdr.ResultTD);
if (sect - current >= 150)
break;
}
}
static void generate_subq(const u8 *time)
{
unsigned char start[3], next[3];
unsigned int this_s, start_s, next_s, pregap;
int relative_s;
CDR_getTD(cdr.CurTrack, start);
if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
pregap = 150;
CDR_getTD(cdr.CurTrack + 1, next);
}
else {
// last track - cd size
pregap = 0;
next[0] = cdr.SetSectorEnd[2];
next[1] = cdr.SetSectorEnd[1];
next[2] = cdr.SetSectorEnd[0];
}
this_s = msf2sec(time);
start_s = fsm2sec(start);
next_s = fsm2sec(next);
cdr.TrackChanged = FALSE;
if (next_s - this_s < pregap) {
cdr.TrackChanged = TRUE;
cdr.CurTrack++;
start_s = next_s;
}
cdr.subq.Index = 1;
relative_s = this_s - start_s;
if (relative_s < 0) {
cdr.subq.Index = 0;
relative_s = -relative_s;
}
sec2msf(relative_s, cdr.subq.Relative);
cdr.subq.Track = itob(cdr.CurTrack);
cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
cdr.subq.Absolute[0] = itob(time[0]);
cdr.subq.Absolute[1] = itob(time[1]);
cdr.subq.Absolute[2] = itob(time[2]);
}
static int ReadTrack(const u8 *time)
{
unsigned char tmp[4];
int read_ok;
tmp[0] = itob(time[0]);
tmp[1] = itob(time[1]);
tmp[2] = itob(time[2]);
tmp[3] = 0;
CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
if (*((u32*)cdr.Prev) == *((u32*)tmp)) {
return 1;
}
read_ok = CDR_readTrack(tmp);
if (read_ok)
*((u32*)cdr.Prev) = *((u32*)tmp);
return read_ok;
}
static void UpdateSubq(const u8 *time)
{
const struct SubQ *subq;
int s = MSF2SECT_OLD(time[0], time[1], time[2]);
u16 crc;
if (CheckSBI(s))
return;
if (cdr.CurTrack == 1) {
subq = (struct SubQ *)CDR_getBufferSub(s);
if (subq != NULL )
{
crc = calcCrc((u8 *)subq + 12, 10);
if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
cdr.subq.Track = subq->TrackNumber;
cdr.subq.Index = subq->IndexNumber;
memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
}
else {
CDR_LOG_I("subq bad crc @%02x:%02x:%02x\n",
tmp[0], tmp[1], tmp[2]);
}
}
else
{
generate_subq(time);
}
}
else {
generate_subq(time);
}
CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
cdr.subq.Track, cdr.subq.Index,
cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
}
static void cdrPlayInterrupt_Autopause(s16* cddaBuf)
{
u32 abs_lev_max = 0;
bool abs_lev_chselect;
u32 i;
if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
CDR_LOG_I("autopause\n");
SetResultSize(1);
cdr.Result[0] = cdr.StatP;
setIrq(DataEnd, 0x1000); // 0x1000 just for logging purposes
StopCdda();
SetPlaySeekRead(cdr.StatP, 0);
cdr.DriveState = DRIVESTATE_PAUSED;
}
else if ((cdr.Mode & MODE_REPORT) && !cdr.ReportDelay &&
((cdr.subq.Absolute[2] & 0x0f) == 0 || cdr.FastForward || cdr.FastBackward))
{
SetResultSize(8);
cdr.Result[0] = cdr.StatP;
cdr.Result[1] = cdr.subq.Track;
cdr.Result[2] = cdr.subq.Index;
abs_lev_chselect = cdr.subq.Absolute[1] & 0x01;
/* 8 is a hack. For accuracy, it should be 588. */
for (i = 0; i < 8; i++)
{
abs_lev_max = MAX_VALUE(abs_lev_max, abs(cddaBuf[i * 2 + abs_lev_chselect]));
}
abs_lev_max = MIN_VALUE(abs_lev_max, 32767);
abs_lev_max |= abs_lev_chselect << 15;
if (cdr.subq.Absolute[2] & 0x10) {
cdr.Result[3] = cdr.subq.Relative[0];
cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
cdr.Result[5] = cdr.subq.Relative[2];
}
else {
cdr.Result[3] = cdr.subq.Absolute[0];
cdr.Result[4] = cdr.subq.Absolute[1];
cdr.Result[5] = cdr.subq.Absolute[2];
}
cdr.Result[6] = abs_lev_max >> 0;
cdr.Result[7] = abs_lev_max >> 8;
setIrq(DataReady, 0x1001);
}
if (cdr.ReportDelay)
cdr.ReportDelay--;
}
static bool canDoTurbo(void)
{
u32 c = psxRegs.cycle;
return fastLoad && !cdr.RetryDetected && !cdr.AdpcmActive
//&& c - psxRegs.intCycle[PSXINT_SPUDMA].sCycle > (u32)cdReadTime * 2
&& c - psxRegs.intCycle[PSXINT_MDECOUTDMA].sCycle > (u32)cdReadTime * 16;
}
static int cdrSeekTime(unsigned char *target)
{
int diff = msf2sec(cdr.SetSectorPlay) - msf2sec(target);
int seekTime = abs(diff) * (cdReadTime / 2000);
int cyclesSinceRS = psxRegs.cycle - cdr.LastReadSeekCycles;
seekTime = MAX_VALUE(seekTime, 20000);
// Transformers Beast Wars Transmetals does Setloc(x),SeekL,Setloc(x),ReadN
// and then wants some slack time
if (cdr.DriveState == DRIVESTATE_PAUSED || cyclesSinceRS < cdReadTime *3/2)
seekTime += cdReadTime;
seekTime = MIN_VALUE(seekTime, PSXCLK * 2 / 3);
CDR_LOG("seek: %.2f %.2f (%.2f) st %d di %d\n", (float)seekTime / PSXCLK,
(float)seekTime / cdReadTime, (float)cyclesSinceRS / cdReadTime,
cdr.DriveState, diff);
return seekTime;
}
static u32 cdrAlignTimingHack(u32 cycles)
{
/*
* timing hack for T'ai Fu - Wrath of the Tiger:
* The game has a bug where it issues some cdc commands from a low priority
* vint handler, however there is a higher priority default bios handler
* that acks the vint irq and returns, so game's handler is not reached
* (see bios irq handler chains at e004 and the game's irq handling func
* at 80036810). For the game to work, vint has to arrive after the bios
* vint handler rejects some other irq (of which only cd and rcnt2 are
* active), but before the game's handler loop reads I_STAT. The time
* window for this is quite small (~1k cycles of so). Apparently this
* somehow happens naturally on the real hardware.
*
* Note: always enforcing this breaks other games like Crash PAL version
* (inputs get dropped because bios handler doesn't see interrupts).
*/
u32 vint_rel;
if (psxRegs.cycle - rcnts[3].cycleStart > 250000)
return cycles;
vint_rel = rcnts[3].cycleStart + 63000 - psxRegs.cycle;
vint_rel += PSXCLK / 60;
while ((s32)(vint_rel - cycles) < 0)
vint_rel += PSXCLK / 60;
return vint_rel;
}
static void cdrUpdateTransferBuf(const u8 *buf);
static void cdrReadInterrupt(void);
static void cdrPrepCdda(s16 *buf, int samples);
static void msfiAdd(u8 *msfi, u32 count)
{
assert(count < 75);
msfi[2] += count;
if (msfi[2] >= 75) {
msfi[2] -= 75;
msfi[1]++;
if (msfi[1] == 60) {
msfi[1] = 0;
msfi[0]++;
}
}
}
static void msfiSub(u8 *msfi, u32 count)
{
assert(count < 75);
msfi[2] -= count;
if ((s8)msfi[2] < 0) {
msfi[2] += 75;
msfi[1]--;
if ((s8)msfi[1] < 0) {
msfi[1] = 60;
msfi[0]--;
}
}
}
static int msfiEq(const u8 *a, const u8 *b)
{
return a[0] == b[0] && a[1] == b[1] && a[2] == b[2];
}
void cdrPlayReadInterrupt(void)
{
cdr.LastReadSeekCycles = psxRegs.cycle;
if (cdr.Reading) {
cdrReadInterrupt();
return;
}
if (!cdr.Play) return;
CDR_LOG("CDDA - %02d:%02d:%02d m %02x\n",
cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], cdr.Mode);
cdr.DriveState = DRIVESTATE_PLAY_READ;
SetPlaySeekRead(cdr.StatP, STATUS_PLAY);
//if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
if (*(u32 *)cdr.SetSectorPlay >= *(u32 *)cdr.SetSectorEnd) {
CDR_LOG_I("end stop\n");
StopCdda();
SetPlaySeekRead(cdr.StatP, 0);
cdr.TrackChanged = TRUE;
cdr.DriveState = DRIVESTATE_PAUSED;
}
else {
CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], (u8 *)read_buf);
}
if (!cdr.IrqStat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
{
// update for CdlGetlocP/autopause
generate_subq(cdr.SetSectorPlay);
cdrPlayInterrupt_Autopause(read_buf);
}
//if (!cdr.Play) return;
if (cdr.Play && !Config.Cdda) {
cdrPrepCdda(read_buf, CD_FRAMESIZE_RAW / 4);
SPU_playCDDAchannel(read_buf, CD_FRAMESIZE_RAW, psxRegs.cycle, 0);
}
msfiAdd(cdr.SetSectorPlay, 1);
// Backup location information for CdlGetlocP
*((u32*)cdr.SetSectorPlayBak) = *((u32*)cdr.SetSectorPlay);
CDRPLAYREAD_INT(cdReadTime, 0);
}
static void softReset(void)
{
CDR_getStatus(&cdr_stat);
if (cdr_stat.Status & STATUS_SHELLOPEN) {
cdr.DriveState = DRIVESTATE_LID_OPEN;
cdr.StatP = STATUS_SHELLOPEN;
}
else if (CdromId[0] == '\0') {
cdr.DriveState = DRIVESTATE_STOPPED;
cdr.StatP = 0;
}
else {
cdr.DriveState = DRIVESTATE_STANDBY;
cdr.StatP = STATUS_ROTATING;
}
cdr.FifoOffset = DATA_SIZE; // fifo empty
cdr.LocL[0] = LOCL_INVALID;
cdr.Mode = MODE_SIZE_2340;
cdr.Muted = FALSE;
SPU_setCDvol(cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight, psxRegs.cycle);
}
#define CMD_PART2 0x100
#define CMD_WHILE_NOT_READY 0x200
void cdrInterrupt(void) {
int start_rotating = 0;
int error = 0;
u32 cycles, seekTime = 0;
u32 second_resp_time = 0;
const void *buf;
u8 ParamC;
u8 set_loc[4];
int read_ok;
u16 not_ready = 0;
u8 IrqStat = Acknowledge;
u8 DriveStateOld;
u16 Cmd;
int i;
if (cdr.IrqStat) {
CDR_LOG_I("cmd %02x with irqstat %x\n",
cdr.CmdInProgress, cdr.IrqStat);
return;
}
if (cdr.Irq1Pending) {
// hand out the "newest" sector, according to nocash
cdrUpdateTransferBuf(CDR_getBuffer());
CDR_LOG_I("%x:%02x:%02x loaded on ack, cmd=%02x res=%02x\n",
cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2],
cdr.CmdInProgress, cdr.Irq1Pending);
SetResultSize(1);
cdr.Result[0] = cdr.Irq1Pending;
cdr.Irq1Pending = 0;
setIrq((cdr.Irq1Pending & STATUS_ERROR) ? DiskError : DataReady, 0x1003);
return;
}
// default response
SetResultSize(1);
cdr.Result[0] = cdr.StatP;
Cmd = cdr.CmdInProgress;
cdr.CmdInProgress = 0;
ParamC = cdr.ParamC;
if (Cmd < 0x100) {
cdr.Ctrl &= ~0x80;
cdr.ParamC = 0;
cdr.Cmd = 0;
#ifdef DISP_DEBUG
//sprintf(txtbuffer, "cdrInterrupt1 %s ", CmdName[Cmd]);
//DEBUG_print(txtbuffer, DBG_CDR1);
#endif // DISP_DEBUG
}
else
{
#ifdef DISP_DEBUG
//sprintf(txtbuffer, "cdrInterrupt2 %s ", CmdName[Cmd - CMD_PART2]);
//DEBUG_print(txtbuffer, DBG_CDR2);
#endif // DISP_DEBUG
}
switch (cdr.DriveState) {
case DRIVESTATE_PREPARE_CD:
if (Cmd > 2) {
// Syphon filter 2 expects commands to work shortly after it sees
// STATUS_ROTATING, so give up trying to emulate the startup seq
cdr.DriveState = DRIVESTATE_STANDBY;
cdr.StatP &= ~STATUS_SEEK;
psxRegs.interrupt &= ~(1 << PSXINT_CDRLID);
break;
}
// fallthrough
case DRIVESTATE_LID_OPEN:
case DRIVESTATE_RESCAN_CD:
// no disk or busy with the initial scan, allowed cmds are limited
not_ready = CMD_WHILE_NOT_READY;
break;
}
switch (Cmd | not_ready) {
case CdlNop:
case CdlNop + CMD_WHILE_NOT_READY:
if (cdr.DriveState != DRIVESTATE_LID_OPEN)
cdr.StatP &= ~STATUS_SHELLOPEN;
break;
case CdlSetloc:
// case CdlSetloc + CMD_WHILE_NOT_READY: // or is it?
CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
// MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
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))
{
CDR_LOG_I("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
if (++cdr.errorRetryhack > 100)
break;
error = ERROR_BAD_ARGNUM;
goto set_error;
}
else
{
set_loc[0] = btoi(cdr.Param[0]);
set_loc[1] = btoi(cdr.Param[1]);
set_loc[2] = btoi(cdr.Param[2]);
set_loc[3] = 0;
if ((msfiEq(cdr.SetSector, set_loc)) //|| msfiEq(cdr.Param, cdr.Transfer))
&& !cdr.SetlocPending)
cdr.RetryDetected++;
else
cdr.RetryDetected = 0;
*((u32*)cdr.SetSector) = *((u32*)set_loc);
cdr.SetlocPending = 1;
cdr.errorRetryhack = 0;
}
break;
do_CdlPlay:
case CdlPlay:
StopCdda();
StopReading();
cdr.FastBackward = 0;
cdr.FastForward = 0;
// BIOS CD Player
// - Pause player, hit Track 01/02/../xx (Setloc issued!!)
if (ParamC != 0 && cdr.Param[0] != 0) {
int track = btoi( cdr.Param[0] );
if (track <= cdr.ResultTN[1])
cdr.CurTrack = track;
CDR_LOG("PLAY track %d\n", cdr.CurTrack);
if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
set_loc[0] = cdr.ResultTD[2];
set_loc[1] = cdr.ResultTD[1];
set_loc[2] = cdr.ResultTD[0];
set_loc[3] = 0;
seekTime = cdrSeekTime(set_loc);
*((u32*)cdr.SetSectorPlay) = *((u32*)set_loc);
}
}
else if (cdr.SetlocPending) {
seekTime = cdrSeekTime(cdr.SetSector);
//memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
*((u32*)cdr.SetSectorPlay) = *((u32*)cdr.SetSector);
}
else {
CDR_LOG("PLAY Resume @ %d:%d:%d\n",
cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);