diff options
Diffstat (limited to 'plugins/ao/eng_psf/peops2/dma2.c')
| -rw-r--r-- | plugins/ao/eng_psf/peops2/dma2.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/plugins/ao/eng_psf/peops2/dma2.c b/plugins/ao/eng_psf/peops2/dma2.c new file mode 100644 index 00000000..d137dfc2 --- /dev/null +++ b/plugins/ao/eng_psf/peops2/dma2.c @@ -0,0 +1,175 @@ +/*************************************************************************** + dma.c - description + ------------------- + begin : Wed May 15 2002 + copyright : (C) 2002 by Pete Bernert + email : BlackDove@addcom.de + ***************************************************************************/ + +/*************************************************************************** + * * + * 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. See also the license.txt file for * + * additional informations. * + * * + ***************************************************************************/ + +//*************************************************************************// +// History of changes: +// +// 2004/04/04 - Pete +// - changed plugin to emulate PS2 spu +// +// 2002/05/15 - Pete +// - generic cleanup for the Peops release +// +//*************************************************************************// + +#include "../peops2/stdafx.h" + +#define _IN_DMA + +#include "../peops2/externals.h" +#include "../peops2/registers.h" +//#include "debug.h" + +extern uint32 psx_ram[(2*1024*1024)/4]; + +//////////////////////////////////////////////////////////////////////// +// READ DMA (many values) +//////////////////////////////////////////////////////////////////////// + +EXPORT_GCC void CALLBACK SPU2readDMA4Mem(u32 usPSXMem,int iSize) +{ + int i; + u16 *ram16 = (u16 *)&psx_ram[0]; + + for(i=0;i<iSize;i++) + { + ram16[usPSXMem>>1]=spuMem[spuAddr2[0]]; // spu addr 0 got by writeregister + usPSXMem+=2; + spuAddr2[0]++; // inc spu addr + if(spuAddr2[0]>0xfffff) spuAddr2[0]=0; // wrap + } + + spuAddr2[0]+=0x20; //????? + + + iSpuAsyncWait=0; + + // got from J.F. and Kanodin... is it needed? + regArea[(PS2_C0_ADMAS)>>1]=0; // Auto DMA complete + spuStat2[0]=0x80; // DMA complete +} + +EXPORT_GCC void CALLBACK SPU2readDMA7Mem(u32 usPSXMem,int iSize) +{ + int i; + u16 *ram16 = (u16 *)&psx_ram[0]; + + for(i=0;i<iSize;i++) + { + ram16[usPSXMem>>1]=spuMem[spuAddr2[1]]; // spu addr 1 got by writeregister + usPSXMem+=2; + spuAddr2[1]++; // inc spu addr + if(spuAddr2[1]>0xfffff) spuAddr2[1]=0; // wrap + } + + spuAddr2[1]+=0x20; //????? + + iSpuAsyncWait=0; + + // got from J.F. and Kanodin... is it needed? + regArea[(PS2_C1_ADMAS)>>1]=0; // Auto DMA complete + spuStat2[1]=0x80; // DMA complete +} + +//////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////// + +// to investigate: do sound data updates by writedma affect spu +// irqs? Will an irq be triggered, if new data is written to +// the memory irq address? + +//////////////////////////////////////////////////////////////////////// +// WRITE DMA (many values) +//////////////////////////////////////////////////////////////////////// + +EXPORT_GCC void CALLBACK SPU2writeDMA4Mem(u32 usPSXMem,int iSize) +{ + int i; + u16 *ram16 = (u16 *)&psx_ram[0]; + + for(i=0;i<iSize;i++) + { + spuMem[spuAddr2[0]] = ram16[usPSXMem>>1]; // spu addr 0 got by writeregister + usPSXMem+=2; + spuAddr2[0]++; // inc spu addr + if(spuAddr2[0]>0xfffff) spuAddr2[0]=0; // wrap + } + + iSpuAsyncWait=0; + + // got from J.F. and Kanodin... is it needed? + spuStat2[0]=0x80; // DMA complete +} + +EXPORT_GCC void CALLBACK SPU2writeDMA7Mem(u32 usPSXMem,int iSize) +{ + int i; + u16 *ram16 = (u16 *)&psx_ram[0]; + + for(i=0;i<iSize;i++) + { + spuMem[spuAddr2[1]] = ram16[usPSXMem>>1]; // spu addr 1 got by writeregister + spuAddr2[1]++; // inc spu addr + if(spuAddr2[1]>0xfffff) spuAddr2[1]=0; // wrap + } + + iSpuAsyncWait=0; + + // got from J.F. and Kanodin... is it needed? + spuStat2[1]=0x80; // DMA complete +} + +//////////////////////////////////////////////////////////////////////// +// INTERRUPTS +//////////////////////////////////////////////////////////////////////// + +void InterruptDMA4(void) +{ +// taken from linuzappz NULL spu2 +// spu2Rs16(CORE0_ATTR)&= ~0x30; +// spu2Rs16(REG__1B0) = 0; +// spu2Rs16(SPU2_STATX_WRDY_M)|= 0x80; + + spuCtrl2[0]&=~0x30; + regArea[(PS2_C0_ADMAS)>>1]=0; + spuStat2[0]|=0x80; +} + +EXPORT_GCC void CALLBACK SPU2interruptDMA4(void) +{ + InterruptDMA4(); +} + +void InterruptDMA7(void) +{ +// taken from linuzappz NULL spu2 +// spu2Rs16(CORE1_ATTR)&= ~0x30; +// spu2Rs16(REG__5B0) = 0; +// spu2Rs16(SPU2_STATX_DREQ)|= 0x80; + + spuCtrl2[1]&=~0x30; + regArea[(PS2_C1_ADMAS)>>1]=0; + spuStat2[1]|=0x80; +} + +EXPORT_GCC void CALLBACK SPU2interruptDMA7(void) +{ + InterruptDMA7(); +} + |