From: notaz Date: Mon, 5 Sep 2022 20:47:10 +0000 (+0300) Subject: cdrom: clean up command handling X-Git-Tag: r24~322 X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7f2576b26c2372738c528741d7cf8c307736e623;p=pcsx_rearmed.git cdrom: clean up command handling --- diff --git a/libpcsxcore/cdrom.c b/libpcsxcore/cdrom.c index 184d07ab..772e76f0 100644 --- a/libpcsxcore/cdrom.c +++ b/libpcsxcore/cdrom.c @@ -45,10 +45,11 @@ //#define CDR_LOG_CMD_IRQ static struct { - unsigned char OCUP; - unsigned char Reg1Mode; + // unused members maintain savesate compatibility + unsigned char unused0; + unsigned char unused1; unsigned char Reg2; - unsigned char CmdProcess; + unsigned char unused2; unsigned char Ctrl; unsigned char Stat; @@ -62,7 +63,7 @@ static struct { unsigned char Absolute[3]; } subq; unsigned char TrackChanged; - unsigned char pad1[3]; + unsigned char unused3[3]; unsigned int freeze_ver; unsigned char Prev[4]; @@ -94,18 +95,18 @@ static struct { xa_decode_t Xa; - int Init; + u32 unused4; - u16 Irq; - u8 IrqRepeated; - u32 eCycle; + u16 CmdInProgress; + u16 unused5; + u32 unused6; - u8 pad2; + u8 unused7; u8 DriveState; u8 FastForward; u8 FastBackward; - u8 pad; + u8 unused8; u8 AttenuatorLeftToLeft, AttenuatorLeftToRight; u8 AttenuatorRightToRight, AttenuatorRightToLeft; @@ -290,6 +291,7 @@ static void setIrq(int log_cmd) psxHu32ref(0x1070) |= SWAP32((u32)0x4); #ifdef CDR_LOG_CMD_IRQ + if (cdr.Stat) { int i; SysPrintf("CDR IRQ=%d cmd %02x stat %02x: ", @@ -481,23 +483,6 @@ static void ReadTrack(const u8 *time) { cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]); } -static void AddIrqQueue(unsigned short irq, unsigned long ecycle) { - if (cdr.Irq != 0) { - if (irq == cdr.Irq || irq + 0x100 == cdr.Irq) { - cdr.IrqRepeated = 1; - CDR_INT(ecycle); - return; - } - - CDR_LOG_I("cdr: override cmd %02x -> %02x\n", cdr.Irq, irq); - } - - cdr.Irq = irq; - cdr.eCycle = ecycle; - - CDR_INT(ecycle); -} - static void cdrPlayInterrupt_Autopause() { u32 abs_lev_max = 0; @@ -599,7 +584,7 @@ void cdrPlaySeekReadInterrupt(void) cdr.StatP |= STATUS_ROTATING; SetPlaySeekRead(cdr.StatP, 0); cdr.Result[0] = cdr.StatP; - if (cdr.Irq == 0) { + if (cdr.Stat == 0) { cdr.Stat = Complete; setIrq(0x202); } @@ -625,7 +610,7 @@ void cdrPlaySeekReadInterrupt(void) CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], (u8 *)read_buf); } - if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT))) + if (!cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT))) cdrPlayInterrupt_Autopause(); if (!cdr.Muted && !Config.Cdda) { @@ -651,19 +636,20 @@ void cdrPlaySeekReadInterrupt(void) } void cdrInterrupt(void) { - u16 Irq = cdr.Irq; int no_busy_error = 0; int start_rotating = 0; int error = 0; - int delay; unsigned int seekTime = 0; + u32 second_resp_time = 0; + u8 ParamC; u8 set_loc[3]; + u16 Cmd; int i; // Reschedule IRQ if (cdr.Stat) { - CDR_LOG_I("cdrom: stat hack: %02x %x\n", cdr.Irq, cdr.Stat); - CDR_INT(0x1000); + CDR_LOG_I("cdrom: cmd %02x with irqstat %x\n", cdr.CmdInProgress, cdr.Stat); + CDR_INT(1000); return; } @@ -674,17 +660,16 @@ void cdrInterrupt(void) { cdr.Result[0] = cdr.StatP; cdr.Stat = Acknowledge; - if (cdr.IrqRepeated) { - cdr.IrqRepeated = 0; - if (cdr.eCycle > psxRegs.cycle) { - CDR_INT(cdr.eCycle); - goto finish; - } - } + Cmd = cdr.CmdInProgress; + cdr.CmdInProgress = 0; + ParamC = cdr.ParamC; - cdr.Irq = 0; + if (Cmd < 0x100) { + cdr.Cmd = 0; + cdr.ParamC = 0; + } - switch (Irq) { + switch (Cmd) { case CdlNop: if (cdr.DriveState != DRIVESTATE_LID_OPEN) cdr.StatP &= ~STATUS_SHELLOPEN; @@ -722,7 +707,7 @@ void cdrInterrupt(void) { // BIOS CD Player // - Pause player, hit Track 01/02/../xx (Setloc issued!!) - if (cdr.ParamC != 0 && cdr.Param[0] != 0) { + if (ParamC != 0 && cdr.Param[0] != 0) { int track = btoi( cdr.Param[0] ); if (track <= cdr.ResultTN[1]) @@ -796,7 +781,7 @@ void cdrInterrupt(void) { error = ERROR_INVALIDARG; goto set_error; } - AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2); + second_resp_time = cdReadTime * 125 / 2; start_rotating = 1; break; @@ -819,12 +804,11 @@ void cdrInterrupt(void) { SetPlaySeekRead(cdr.StatP, 0); cdr.StatP &= ~STATUS_ROTATING; - delay = 0x800; + second_resp_time = 0x800; if (cdr.DriveState == DRIVESTATE_STANDBY) - delay = cdReadTime * 30 / 2; + second_resp_time = cdReadTime * 30 / 2; cdr.DriveState = DRIVESTATE_STOPPED; - AddIrqQueue(CdlStop + 0x100, delay); break; case CdlStop + 0x100: @@ -851,13 +835,12 @@ void cdrInterrupt(void) { * */ if (!(cdr.StatP & (STATUS_PLAY | STATUS_READ))) { - delay = 7000; + second_resp_time = 7000; } else { - delay = (((cdr.Mode & MODE_SPEED) ? 2 : 1) * (1000000)); + second_resp_time = (((cdr.Mode & MODE_SPEED) ? 2 : 1) * 1000000); } - AddIrqQueue(CdlPause + 0x100, delay); SetPlaySeekRead(cdr.StatP, 0); cdr.Ctrl |= 0x80; break; @@ -872,7 +855,7 @@ void cdrInterrupt(void) { SetPlaySeekRead(cdr.StatP, 0); cdr.Muted = FALSE; cdr.Mode = 0x20; /* This fixes This is Football 2, Pooh's Party lockups */ - AddIrqQueue(CdlReset + 0x100, 4100000); + second_resp_time = 4100000; no_busy_error = 1; start_rotating = 1; break; @@ -895,6 +878,8 @@ void cdrInterrupt(void) { break; case CdlSetmode: + CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]); + cdr.Mode = cdr.Param[0]; no_busy_error = 1; break; @@ -920,7 +905,7 @@ void cdrInterrupt(void) { case CdlReadT: // SetSession? // really long - AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4); + second_resp_time = cdReadTime * 290 / 4; start_rotating = 1; break; @@ -1001,7 +986,7 @@ void cdrInterrupt(void) { break; case CdlID: - AddIrqQueue(CdlID + 0x100, 20480); + second_resp_time = 20480; break; case CdlID + 0x100: @@ -1045,7 +1030,7 @@ void cdrInterrupt(void) { break; case CdlReadToc: - AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4); + second_resp_time = cdReadTime * 180 / 4; no_busy_error = 1; start_rotating = 1; break; @@ -1083,7 +1068,7 @@ void cdrInterrupt(void) { break; case CdlSync: default: - CDR_LOG_I("Invalid command: %02x\n", Irq); + CDR_LOG_I("Invalid command: %02x\n", Cmd); error = ERROR_INVALIDCMD; // FALLTHROUGH @@ -1113,9 +1098,17 @@ void cdrInterrupt(void) { } } -finish: - setIrq(Irq); - cdr.ParamC = 0; + if (second_resp_time) { + cdr.CmdInProgress = Cmd | 0x100; + CDR_INT(second_resp_time); + } + else if (cdr.Cmd && cdr.Cmd != (Cmd & 0xff)) { + cdr.CmdInProgress = cdr.Cmd; + CDR_LOG_I("cdrom: cmd %02x came before %02x finished\n", cdr.Cmd, Cmd); + CDR_INT(256); + } + + setIrq(Cmd); } #ifdef HAVE_ARMV7 @@ -1170,13 +1163,12 @@ static void cdrReadInterrupt(void) { u8 *buf; - if (cdr.Irq || cdr.Stat) { - CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat); + if (cdr.Stat) { + CDR_LOG_I("cdrom: read stat hack %02x %02x\n", cdr.Cmd, cdr.Stat); CDRPLAYSEEKREAD_INT(2048, 1); return; } - cdr.OCUP = 1; SetResultSize(1); SetPlaySeekRead(cdr.StatP, STATUS_READ | STATUS_ROTATING); cdr.Result[0] = cdr.StatP; @@ -1273,10 +1265,7 @@ unsigned char cdrRead0(void) { else cdr.Ctrl &= ~0x20; - if (cdr.OCUP) - cdr.Ctrl |= 0x40; -// else -// cdr.Ctrl &= ~0x40; + cdr.Ctrl |= 0x40; // data fifo not empty // What means the 0x10 and the 0x08 bits? I only saw it used by the bios cdr.Ctrl |= 0x18; @@ -1320,9 +1309,6 @@ void cdrWrite1(unsigned char rt) { return; } - cdr.Cmd = rt; - cdr.OCUP = 0; - #ifdef CDR_LOG_CMD_IRQ SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]); if (cdr.ParamC) { @@ -1338,16 +1324,20 @@ void cdrWrite1(unsigned char rt) { cdr.ResultReady = 0; cdr.Ctrl |= 0x80; - // cdr.Stat = NoIntr; - AddIrqQueue(cdr.Cmd, 0x800); - - switch (cdr.Cmd) { - case CdlSetmode: - CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]); - cdr.Mode = cdr.Param[0]; - break; + if (!cdr.CmdInProgress) { + cdr.CmdInProgress = rt; + // should be something like 12k + controller delays + CDR_INT(5000); } + else { + CDR_LOG_I("cdr: cmd while busy: %02x, prev %02x, busy %02x\n", + rt, cdr.Cmd, cdr.CmdInProgress); + if (cdr.CmdInProgress < 0x100) // no pending 2nd response + cdr.CmdInProgress = rt; + } + + cdr.Cmd = rt; } unsigned char cdrRead2(void) { @@ -1403,6 +1393,10 @@ void cdrWrite3(unsigned char rt) { case 0: break; // transfer case 1: +#ifdef CDR_LOG_CMD_IRQ + if (cdr.Stat & rt) + SysPrintf("ack %02x\n", cdr.Stat & rt); +#endif cdr.Stat &= ~rt; if (rt & 0x40) @@ -1414,7 +1408,7 @@ void cdrWrite3(unsigned char rt) { case 3: if (rt & 0x20) { memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4); - CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n", + CDR_LOG("CD-XA Volume: %02x %02x | %02x %02x\n", cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight, cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight); }