forked from dolphin-emu/dolphin
55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <gccore.h>
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#include <ogc/dsp.h>
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#include <ogc/irq.h>
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#include <ogc/machine/asm.h>
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#include <ogc/machine/processor.h>
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#include <ogcsys.h>
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#include "dsp_interface.h"
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#include "real_dsp.h"
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static vu16* const _dspReg = (u16*)0xCC005000;
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// Handler for DSP interrupt.
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static void dsp_irq_handler(u32 nIrq, void* pCtx)
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{
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// Acknowledge interrupt?
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_dspReg[5] = (_dspReg[5] & ~(DSPCR_AIINT | DSPCR_ARINT)) | DSPCR_DSPINT;
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}
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void RealDSP::Init()
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{
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_dspReg[5] = (_dspReg[5] & ~(DSPCR_AIINT | DSPCR_ARINT | DSPCR_DSPINT)) | DSPCR_DSPRESET;
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_dspReg[5] = (_dspReg[5] & ~(DSPCR_HALT | DSPCR_AIINT | DSPCR_ARINT | DSPCR_DSPINT));
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u32 level;
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_CPU_ISR_Disable(level);
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IRQ_Request(IRQ_DSP_DSP, dsp_irq_handler, nullptr);
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_CPU_ISR_Restore(level);
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}
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void RealDSP::Reset()
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{
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// Reset the DSP.
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_dspReg[5] = (_dspReg[5] & ~(DSPCR_AIINT | DSPCR_ARINT | DSPCR_DSPINT)) | DSPCR_DSPRESET;
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_dspReg[5] = (_dspReg[5] & ~(DSPCR_HALT | DSPCR_AIINT | DSPCR_ARINT | DSPCR_DSPINT));
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_dspReg[5] |= DSPCR_RES;
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while (_dspReg[5] & DSPCR_RES)
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;
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_dspReg[9] = 0x63;
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}
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u32 RealDSP::CheckMailTo()
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{
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return DSP_CheckMailTo();
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}
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void RealDSP::SendMailTo(u32 mail)
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{
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DSP_SendMailTo(mail);
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}
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