69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
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// Copyright (C) 2003-2009 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include <gccore.h>
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#include <ogcsys.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 "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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// This code looks odd - shouldn't we initialize level?
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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, NULL);
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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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