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Just committing an IPU speedhack I found a while back, in case anyone wants to play with it. It's disabled by default. Enable by uncommenting the #define in IPU.h -- might break some movies tho, I dunno. 

git-svn-id: http://pcsx2-playground.googlecode.com/svn/trunk@381 a6443dda-0b58-4228-96e9-037be469359c
This commit is contained in:
Jake.Stine 2008-12-03 18:24:06 +00:00 committed by Gregory Hainaut
parent 63398c252a
commit a555f60477
3 changed files with 46 additions and 25 deletions
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60
pcsx2/IPU/IPU.c
View File

@ -27,10 +27,16 @@
#include "iR5900.h"
#include "coroutine.h"
#ifdef _WIN32
#define FASTCALL __fastcall
// IPU Speedhack : Calls the IPU interrupt handlers directly instead of feeding
// them through the EE's branch test. Not tested extensively yet.
#ifdef USE_IPU_SPEEDHACK
# define IPU_TO_INT( val ) ipu1Interrupt()
# define IPU_FROM_INT( val ) ipu0Interrupt()
# define IPU_FASTCALL
#else
#define FASTCALL
# define IPU_TO_INT( val ) CPU_INT( DMAC_TO_IPU, val )
# define IPU_FROM_INT( val ) CPU_INT( DMAC_FROM_IPU, val )
# define IPU_FORCEINLINE __forceinline
#endif
#ifndef PCSX2_VIRTUAL_MEM
@ -940,7 +946,7 @@ static void ipuSETTH(u32 val) {
///////////////////////
// IPU Worker Thread //
///////////////////////
#define IPU_INTERRUPT(dma) { \
#define IPU_TO_INTERRUPT(dma) { \
hwIntcIrq(INTC_IPU); \
}
@ -960,7 +966,7 @@ void IPUCMD_WRITE(u32 val) {
switch (ipuRegs->cmd.CMD) {
case SCE_IPU_BCLR:
ipuBCLR(val);
IPU_INTERRUPT(DMAC_TO_IPU);
IPU_TO_INTERRUPT(DMAC_TO_IPU);
return;
case SCE_IPU_VDEC:
@ -1021,7 +1027,8 @@ void IPUCMD_WRITE(u32 val) {
g_nCmdIndex = 0;
if( ipuCSC(ipuRegs->cmd.DATA) ) {
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100)) CPU_INT(DMAC_FROM_IPU,0);
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100))
IPU_FROM_INT(0);
return;
}
@ -1040,7 +1047,8 @@ void IPUCMD_WRITE(u32 val) {
case SCE_IPU_IDEC:
if( ipuIDEC(val) ) {
// idec done, ipu0 done too
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100)) CPU_INT(DMAC_FROM_IPU,0);
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100))
IPU_FROM_INT(0);
return;
}
@ -1053,7 +1061,8 @@ void IPUCMD_WRITE(u32 val) {
case SCE_IPU_BDEC:
if( ipuBDEC(val)) {
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100)) CPU_INT(DMAC_FROM_IPU,0);
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100))
IPU_FROM_INT(0);
if (ipuRegs->ctrl.SCD || ipuRegs->ctrl.ECD)
hwIntcIrq(INTC_IPU);
@ -1125,7 +1134,8 @@ void IPUWorker()
return;
}
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100)) CPU_INT(DMAC_FROM_IPU,0);
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100))
IPU_FROM_INT(0);
break;
case SCE_IPU_PACK:
if( !ipuPACK(ipuRegs->cmd.DATA) )
@ -1150,7 +1160,7 @@ void IPUWorker()
ipuCurCmd = 0xffffffff;
// CHECK!: IPU0dma remains when IDEC is done, so we need to clear it
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100))
CPU_INT(DMAC_FROM_IPU,0);
IPU_FROM_INT(0);
s_routine = NULL;
break;
@ -1166,7 +1176,8 @@ void IPUWorker()
ipuRegs->topbusy = 0;
ipuRegs->cmd.BUSY = 0;
ipuCurCmd = 0xffffffff;
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100)) CPU_INT(DMAC_FROM_IPU,0);
if(ipu0dma->qwc > 0 && (ipu0dma->chcr & 0x100))
IPU_FROM_INT(0);
s_routine = NULL;
if (ipuRegs->ctrl.SCD || ipuRegs->ctrl.ECD)
hwIntcIrq(INTC_IPU);
@ -1631,7 +1642,7 @@ int IPU1dma()
if ((ipu1dma->chcr & 0x80) && (g_nDMATransfer&IPU_DMA_DOTIE1)) { //Check TIE bit of CHCR and IRQ bit of tag
SysPrintf("IPU1 TIE\n");
CPU_INT(DMAC_TO_IPU, totalqwc*BIAS);
IPU_TO_INT(totalqwc*BIAS);
g_nDMATransfer &= ~(IPU_DMA_ACTV1|IPU_DMA_DOTIE1);
g_nDMATransfer |= IPU_DMA_TIE1;
return totalqwc;
@ -1640,7 +1651,7 @@ int IPU1dma()
g_nDMATransfer &= ~(IPU_DMA_ACTV1|IPU_DMA_DOTIE1);
if( (ipu1dma->chcr&0xc) == 0 ) {
CPU_INT(DMAC_TO_IPU, totalqwc*BIAS);
IPU_TO_INT(totalqwc*BIAS);
return totalqwc;
}
else {
@ -1656,7 +1667,7 @@ int IPU1dma()
ipu1dma->chcr = (ipu1dma->chcr & 0xFFFF) | ( (*ptag) & 0xFFFF0000 );
IPU_LOG("IPU dmaIrq Set\n");
CPU_INT(DMAC_TO_IPU, totalqwc*BIAS);
IPU_TO_INT(totalqwc*BIAS);
g_nDMATransfer |= IPU_DMA_TIE1;
return totalqwc;
}
@ -1665,12 +1676,12 @@ int IPU1dma()
{
case 0x00000000:
ipu1dma->tadr += 16;
CPU_INT(DMAC_TO_IPU, (1+totalqwc)*BIAS);
IPU_TO_INT((1+totalqwc)*BIAS);
return totalqwc;
case 0x70000000:
ipu1dma->tadr = ipu1dma->madr;
CPU_INT(DMAC_TO_IPU, (1+totalqwc)*BIAS);
IPU_TO_INT((1+totalqwc)*BIAS);
return totalqwc;
}
}
@ -1687,7 +1698,7 @@ int IPU1dma()
IPU_LOG("dmaIPU1 Normal size=%d, addr=%lx, fifosize=%x\n",
ipu1dma->qwc, ipu1dma->madr, 8 - g_BP.IFC);
IPU1chain();
CPU_INT(DMAC_TO_IPU, (ipu1cycles+totalqwc)*BIAS);
IPU_TO_INT((ipu1cycles+totalqwc)*BIAS);
return totalqwc;
}
else
@ -1769,7 +1780,7 @@ int IPU1dma()
ipu1dma->chcr = (ipu1dma->chcr & 0xFFFF) | ( (*ptag) & 0xFFFF0000 );
}
CPU_INT(DMAC_TO_IPU, ipu1cycles+totalqwc*BIAS);
IPU_TO_INT(ipu1cycles+totalqwc*BIAS);
g_nDMATransfer |= IPU_DMA_TIE1;
return totalqwc;
}
@ -1780,18 +1791,18 @@ int IPU1dma()
{
case 0x00000000:
ipu1dma->tadr += 16;
CPU_INT(DMAC_TO_IPU, (ipu1cycles+totalqwc)*BIAS);
IPU_TO_INT((ipu1cycles+totalqwc)*BIAS);
return totalqwc;
case 0x70000000:
ipu1dma->tadr = ipu1dma->madr;
CPU_INT(DMAC_TO_IPU, (ipu1cycles+totalqwc)*BIAS);
IPU_TO_INT((ipu1cycles+totalqwc)*BIAS);
return totalqwc;
}
}
}
CPU_INT(DMAC_TO_IPU, (ipu1cycles+totalqwc)*BIAS);
IPU_TO_INT((ipu1cycles+totalqwc)*BIAS);
return totalqwc;
}
@ -1899,8 +1910,7 @@ int IPU0dma()
break;
}
}
CPU_INT(DMAC_FROM_IPU,readsize*BIAS);
IPU_FROM_INT(readsize*BIAS);
}
return readsize;
@ -1922,7 +1932,7 @@ void dmaIPU1() // toIPU
extern void GIFdma();
__forceinline void ipu0Interrupt() {
IPU_FORCEINLINE void ipu0Interrupt() {
IPU_LOG("ipu0Interrupt: %x\n", cpuRegs.cycle);
if( g_nDMATransfer & IPU_DMA_FIREINT0 ) {
@ -1953,7 +1963,7 @@ __forceinline void ipu0Interrupt() {
cpuRegs.interrupt &= ~(1 << 3);
}
__forceinline void ipu1Interrupt() {
IPU_FORCEINLINE void ipu1Interrupt() {
IPU_LOG("ipu1Interrupt %x:\n", cpuRegs.cycle);
if( g_nDMATransfer & IPU_DMA_FIREINT1 ) {

9
pcsx2/IPU/IPU.h
View File

@ -20,6 +20,15 @@
#define __IPU_H__
#include "Common.h"
// IPU Speed Hack!
// By uncommenting the define below, the IPU can get a pretty nice speed boost,
// of about 10%. Additionally, the ipuInterrupt handlers in the cpuBranchTest
// are also be removed, which helps reduce branch test overhead in *all* games.
//#define USE_IPU_SPEEDHACK
#ifdef _MSC_VER
#pragma pack(1)
#endif

2
pcsx2/R5900.c
View File

@ -390,8 +390,10 @@ static __forceinline void _cpuTestInterrupts()
if( cpuRegs.interrupt & ( 1 | (3 << 3) | (3<<8) | (3<<10)) )
{
TESTINT(0, vif0Interrupt);
#ifndef USE_IPU_SPEEDHACK
TESTINT(3, ipu0Interrupt);
TESTINT(4, ipu1Interrupt);
#endif
TESTINT(8, SPRFROMinterrupt);
TESTINT(9, SPRTOinterrupt);