mirror of https://github.com/PCSX2/pcsx2.git
398 lines
10 KiB
C++
398 lines
10 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
|
|
* Copyright (C) 2002-2010 PCSX2 Dev Team
|
|
*
|
|
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
|
|
* of the GNU Lesser General Public License as published by the Free Software Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* PCSX2 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 PCSX2.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
|
|
#include "PrecompiledHeader.h"
|
|
#include "Common.h"
|
|
#include "Hardware.h"
|
|
#include "IopCommon.h"
|
|
#include "ps2/HwInternal.h"
|
|
#include "ps2/eeHwTraceLog.inl"
|
|
|
|
using namespace R5900;
|
|
|
|
static __fi void IntCHackCheck()
|
|
{
|
|
// Sanity check: To protect from accidentally "rewinding" the cyclecount
|
|
// on the few times nextBranchCycle can be behind our current cycle.
|
|
s32 diff = g_nextEventCycle - cpuRegs.cycle;
|
|
if( diff > 0 ) cpuRegs.cycle = g_nextEventCycle;
|
|
}
|
|
|
|
int shift = 0;
|
|
static const uint HwF_VerboseConLog = 1<<0;
|
|
static const uint HwF_IntcStatHack = 1<<1; // used for Reads only.
|
|
|
|
template< uint page > void __fastcall _hwRead128(u32 mem, mem128_t* result );
|
|
|
|
template< uint page, bool intcstathack >
|
|
mem32_t __fastcall _hwRead32(u32 mem)
|
|
{
|
|
pxAssume( (mem & 0x03) == 0 );
|
|
|
|
switch( page )
|
|
{
|
|
case 0x00: return rcntRead32<0x00>( mem );
|
|
case 0x01: return rcntRead32<0x01>( mem );
|
|
|
|
case 0x02: return ipuRead32( mem );
|
|
|
|
case 0x03:
|
|
if (mem >= EEMemoryMap::VIF0_Start)
|
|
{
|
|
if(mem >= EEMemoryMap::VIF1_Start)
|
|
return vifRead32<1>(mem);
|
|
else
|
|
return vifRead32<0>(mem);
|
|
}
|
|
return dmacRead32<0x03>( mem );
|
|
|
|
case 0x04:
|
|
case 0x05:
|
|
case 0x06:
|
|
case 0x07:
|
|
{
|
|
// [Ps2Confirm] Reading from FIFOs using non-128 bit reads is a complete mystery.
|
|
// No game is known to attempt such a thing (yay!), so probably nothing for us to
|
|
// worry about. Chances are, though, doing so is "legal" and yields some sort
|
|
// of reproducible behavior. Candidate for real hardware testing.
|
|
|
|
// Current assumption: Reads 128 bits and discards the unused portion.
|
|
|
|
DevCon.WriteLn( Color_Cyan, "Reading 32-bit FIFO data" );
|
|
|
|
u128 out128;
|
|
_hwRead128<page>(mem & ~0x0f, &out128);
|
|
return out128._u32[(mem >> 2) & 0x3];
|
|
}
|
|
break;
|
|
|
|
case 0x0f:
|
|
{
|
|
// INTC_STAT shortcut for heavy spinning.
|
|
// Performance Note: Visual Studio handles this best if we just manually check for it here,
|
|
// outside the context of the switch statement below. This is likely fixed by PGO also,
|
|
// but it's an easy enough conditional to account for anyways.
|
|
|
|
if (mem == INTC_STAT)
|
|
{
|
|
if (intcstathack) IntCHackCheck();
|
|
return psHu32(INTC_STAT);
|
|
}
|
|
|
|
|
|
|
|
if ((mem & 0x1000ff00) == 0x1000f300)
|
|
{
|
|
int ret = 0;
|
|
u32 sif2fifosize = std::min(sif2.fifo.size, 7);
|
|
|
|
switch (mem & 0xf0)
|
|
{
|
|
case 0x00:
|
|
ret = psxHu32(0x1f801814);
|
|
break;
|
|
case 0x80:
|
|
#if PSX_EXTRALOGS
|
|
DevCon.Warning("FIFO Size %x", sif2fifosize);
|
|
#endif
|
|
ret = psHu32(mem) | (sif2fifosize << 16);
|
|
if (sif2.fifo.size > 0) ret |= 0x80000000;
|
|
break;
|
|
case 0xc0:
|
|
ReadFifoSingleWord();
|
|
ret = psHu32(mem);
|
|
break;
|
|
case 0xe0:
|
|
//ret = 0xa000e1ec;
|
|
if (sif2.fifo.size > 0)
|
|
{
|
|
ReadFifoSingleWord();
|
|
ret = psHu32(mem);
|
|
}
|
|
else ret = 0;
|
|
break;
|
|
}
|
|
#if PSX_EXTRALOGS
|
|
DevCon.Warning("SBUS read %x value sending %x", mem, ret);
|
|
#endif
|
|
return ret;
|
|
|
|
|
|
}
|
|
/*if ((mem & 0x1000ff00) == 0x1000f200)
|
|
{
|
|
if((mem & 0xffff) != 0xf230)DevCon.Warning("SBUS read %x value sending %x", mem, psHu32(mem));
|
|
}*/
|
|
switch( mem )
|
|
{
|
|
case SIO_ISR:
|
|
case SBUS_F260:
|
|
case 0x1000f410:
|
|
case MCH_RICM:
|
|
return 0;
|
|
|
|
case SBUS_F240:
|
|
return psHu32(SBUS_F240) | 0xF0000102;
|
|
|
|
case MCH_DRD:
|
|
if( !((psHu32(MCH_RICM) >> 6) & 0xF) )
|
|
{
|
|
switch ((psHu32(MCH_RICM)>>16) & 0xFFF)
|
|
{
|
|
//MCH_RICM: x:4|SA:12|x:5|SDEV:1|SOP:4|SBC:1|SDEV:5
|
|
|
|
case 0x21://INIT
|
|
if(rdram_sdevid < rdram_devices)
|
|
{
|
|
rdram_sdevid++;
|
|
return 0x1F;
|
|
}
|
|
return 0;
|
|
|
|
case 0x23://CNFGA
|
|
return 0x0D0D; //PVER=3 | MVER=16 | DBL=1 | REFBIT=5
|
|
|
|
case 0x24://CNFGB
|
|
//0x0110 for PSX SVER=0 | CORG=8(5x9x7) | SPT=1 | DEVTYP=0 | BYTE=0
|
|
return 0x0090; //SVER=0 | CORG=4(5x9x6) | SPT=1 | DEVTYP=0 | BYTE=0
|
|
|
|
case 0x40://DEVID
|
|
return psHu32(MCH_RICM) & 0x1F; // =SDEV
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
}
|
|
break;
|
|
default: break;
|
|
}
|
|
//Hack for Transformers and Test Drive Unlimited to simulate filling the VIF FIFO
|
|
//It actually stalls VIF a few QW before the end of the transfer, so we need to pretend its all gone
|
|
//else itll take aaaaaaaaages to boot.
|
|
if(mem == (D1_CHCR + 0x10) && CHECK_VIFFIFOHACK)
|
|
return psHu32(mem) + (vif1ch.qwc * 16);
|
|
|
|
if((mem == GIF_CHCR) && !vif1ch.chcr.STR && gifRegs.stat.M3P && gifRegs.stat.APATH != 3)
|
|
{
|
|
//Hack for Wallace and Gromit Curse Project Zoo - Enabled the mask, then starts a new
|
|
//GIF DMA, the mask never comes off and it won't proceed until this is unset.
|
|
//Unsetting it works too but messes up other PATH3 games.
|
|
//If STR is already unset, it won't make the slightest difference.
|
|
return (psHu32(mem) & ~0x100);
|
|
}
|
|
return psHu32(mem);
|
|
}
|
|
|
|
template< uint page >
|
|
mem32_t __fastcall hwRead32(u32 mem)
|
|
{
|
|
mem32_t retval = _hwRead32<page,false>(mem);
|
|
eeHwTraceLog( mem, retval, true );
|
|
return retval;
|
|
}
|
|
|
|
mem32_t __fastcall hwRead32_page_0F_INTC_HACK(u32 mem)
|
|
{
|
|
mem32_t retval = _hwRead32<0x0f,true>(mem);
|
|
eeHwTraceLog( mem, retval, true );
|
|
return retval;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------------------
|
|
// hwRead8 / hwRead16 / hwRead64 / hwRead128
|
|
// --------------------------------------------------------------------------------------
|
|
|
|
template< uint page >
|
|
mem8_t __fastcall _hwRead8(u32 mem)
|
|
{
|
|
u32 ret32 = _hwRead32<page, false>(mem & ~0x03);
|
|
return ((u8*)&ret32)[mem & 0x03];
|
|
}
|
|
|
|
template< uint page >
|
|
mem8_t __fastcall hwRead8(u32 mem)
|
|
{
|
|
mem8_t ret8 = _hwRead8<0x0f>(mem);
|
|
eeHwTraceLog( mem, ret8, true );
|
|
return ret8;
|
|
}
|
|
|
|
template< uint page >
|
|
mem16_t __fastcall _hwRead16(u32 mem)
|
|
{
|
|
pxAssume( (mem & 0x01) == 0 );
|
|
|
|
u32 ret32 = _hwRead32<page, false>(mem & ~0x03);
|
|
return ((u16*)&ret32)[(mem>>1) & 0x01];
|
|
}
|
|
|
|
template< uint page >
|
|
mem16_t __fastcall hwRead16(u32 mem)
|
|
{
|
|
u16 ret16 = _hwRead16<page>(mem);
|
|
eeHwTraceLog( mem, ret16, true );
|
|
return ret16;
|
|
}
|
|
|
|
mem16_t __fastcall hwRead16_page_0F_INTC_HACK(u32 mem)
|
|
{
|
|
pxAssume( (mem & 0x01) == 0 );
|
|
|
|
u32 ret32 = _hwRead32<0x0f, true>(mem & ~0x03);
|
|
u16 ret16 = ((u16*)&ret32)[(mem>>1) & 0x01];
|
|
|
|
eeHwTraceLog( mem, ret16, true );
|
|
return ret16;
|
|
}
|
|
|
|
template< uint page >
|
|
static void _hwRead64(u32 mem, mem64_t* result )
|
|
{
|
|
pxAssume( (mem & 0x07) == 0 );
|
|
|
|
switch (page)
|
|
{
|
|
case 0x02:
|
|
*result = ipuRead64(mem);
|
|
return;
|
|
|
|
case 0x04:
|
|
case 0x05:
|
|
case 0x06:
|
|
case 0x07:
|
|
{
|
|
// [Ps2Confirm] Reading from FIFOs using non-128 bit reads is a complete mystery.
|
|
// No game is known to attempt such a thing (yay!), so probably nothing for us to
|
|
// worry about. Chances are, though, doing so is "legal" and yields some sort
|
|
// of reproducible behavior. Candidate for real hardware testing.
|
|
|
|
// Current assumption: Reads 128 bits and discards the unused portion.
|
|
|
|
uint wordpart = (mem >> 3) & 0x1;
|
|
DevCon.WriteLn( Color_Cyan, "Reading 64-bit FIFO data (%s 64 bits discarded)", wordpart ? "upper" : "lower" );
|
|
|
|
u128 out128;
|
|
_hwRead128<page>(mem & ~0x0f, &out128);
|
|
*result = out128._u64[wordpart];
|
|
}
|
|
return;
|
|
case 0x0F:
|
|
if ((mem & 0xffffff00) == 0x1000f300)
|
|
{
|
|
DevCon.Warning("64bit read from %x wibble", mem);
|
|
if (mem == 0x1000f3E0)
|
|
{
|
|
|
|
ReadFifoSingleWord();
|
|
*result = psHu32(0x1000f3E0);
|
|
ReadFifoSingleWord();
|
|
*result |= (u64)psHu32(0x1000f3E0) << 32;
|
|
}
|
|
}
|
|
return;
|
|
default: break;
|
|
}
|
|
|
|
*result = _hwRead32<page,false>( mem );
|
|
}
|
|
|
|
template< uint page >
|
|
void __fastcall hwRead64(u32 mem, mem64_t* result )
|
|
{
|
|
_hwRead64<page>( mem, result );
|
|
eeHwTraceLog( mem, *result, true );
|
|
}
|
|
|
|
template< uint page >
|
|
void __fastcall _hwRead128(u32 mem, mem128_t* result )
|
|
{
|
|
pxAssume( (mem & 0x0f) == 0 );
|
|
|
|
// FIFOs are the only "legal" 128 bit registers, so we Handle them first.
|
|
// All other registers fall back on the 64-bit handler (and from there
|
|
// all non-IPU reads fall back to the 32-bit handler).
|
|
|
|
switch (page)
|
|
{
|
|
case 0x05:
|
|
ReadFIFO_VIF1( result );
|
|
break;
|
|
|
|
case 0x07:
|
|
if (mem & 0x10)
|
|
ZeroQWC( result ); // IPUin is write-only
|
|
else
|
|
ReadFIFO_IPUout( result );
|
|
break;
|
|
|
|
case 0x04:
|
|
case 0x06:
|
|
// VIF0 and GIF are write-only.
|
|
// [Ps2Confirm] Reads from these FIFOs (and IPUin) do one of the following:
|
|
// return zero, leave contents of the dest register unchanged, or in some
|
|
// indeterminate state. The actual behavior probably isn't important.
|
|
ZeroQWC( result );
|
|
break;
|
|
case 0x0F:
|
|
if ((mem & 0xffffff00) == 0x1000f300)
|
|
{
|
|
DevCon.Warning("128bit read from %x wibble", mem);
|
|
if (mem == 0x1000f3E0)
|
|
{
|
|
|
|
ReadFifoSingleWord();
|
|
result->lo = psHu32(0x1000f3E0);
|
|
ReadFifoSingleWord();
|
|
result->lo |= (u64)psHu32(0x1000f3E0) << 32;
|
|
ReadFifoSingleWord();
|
|
result->hi = psHu32(0x1000f3E0);
|
|
ReadFifoSingleWord();
|
|
result->hi |= (u64)psHu32(0x1000f3E0) << 32;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
_hwRead64<page>( mem, &result->lo );
|
|
result->hi = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
template< uint page >
|
|
void __fastcall hwRead128(u32 mem, mem128_t* result )
|
|
{
|
|
_hwRead128<page>( mem, result );
|
|
eeHwTraceLog( mem, *result, true );
|
|
}
|
|
|
|
#define InstantizeHwRead(pageidx) \
|
|
template mem8_t __fastcall hwRead8<pageidx>(u32 mem); \
|
|
template mem16_t __fastcall hwRead16<pageidx>(u32 mem); \
|
|
template mem32_t __fastcall hwRead32<pageidx>(u32 mem); \
|
|
template void __fastcall hwRead64<pageidx>(u32 mem, mem64_t* result ); \
|
|
template void __fastcall hwRead128<pageidx>(u32 mem, mem128_t* result ); \
|
|
template mem32_t __fastcall _hwRead32<pageidx, false>(u32 mem);
|
|
|
|
InstantizeHwRead(0x00); InstantizeHwRead(0x08);
|
|
InstantizeHwRead(0x01); InstantizeHwRead(0x09);
|
|
InstantizeHwRead(0x02); InstantizeHwRead(0x0a);
|
|
InstantizeHwRead(0x03); InstantizeHwRead(0x0b);
|
|
InstantizeHwRead(0x04); InstantizeHwRead(0x0c);
|
|
InstantizeHwRead(0x05); InstantizeHwRead(0x0d);
|
|
InstantizeHwRead(0x06); InstantizeHwRead(0x0e);
|
|
InstantizeHwRead(0x07); InstantizeHwRead(0x0f);
|