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platform: add DMA support for M3DS (#167)

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lifehackerhansol
2026-05-03 02:18:31 -07:00
committed by GitHub
parent 63ded4b33b
commit 5d908d6fb0
4 changed files with 224 additions and 1 deletions
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63
arm9/source/patches/platform/m3ds/M3DSReadSdSectorsDmaPatchCode.h Normal file
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#pragma once
#include "sections.h"
#include "patches/PatchCode.h"
#include "../IReadSectorsDmaPatchCode.h"
DEFINE_SECTION_SYMBOLS(m3ds_readsdsectorsdma);
DEFINE_SECTION_SYMBOLS(m3ds_readsdsectorsdma_helper);
extern "C" void m3ds_readSdSectorsDma(u32 srcSector, u32 previousSrcSector, u32 dmaChannel, void* dst);
extern "C" void m3ds_finishReadSdSectorsDma(void);
extern "C" void m3ds_readSdSectorsDma_applyCommand(void);
extern "C" void m3ds_sdStopTransmission(void);
extern u32 m3ds_readSdSectorsDma_miiCardDmaCopy32Ptr;
extern u32 m3ds_readSdSectorsDma_applyCommand_address;
extern u32 m3ds_readSdSectorsDma_sdStopTransmission_address;
class M3DSReadSdSectorsDmaHelperPatchCode : public PatchCode
{
public:
explicit M3DSReadSdSectorsDmaHelperPatchCode(PatchHeap& patchHeap)
: PatchCode(SECTION_START(m3ds_readsdsectorsdma_helper),
SECTION_SIZE(m3ds_readsdsectorsdma_helper), patchHeap) { }
const void* GetReadSdSectorsDmaApplyCommandFunction() const
{
return (const void*)GetAddressAtTarget((void*)m3ds_readSdSectorsDma_applyCommand);
}
const void* GetSdStopTransmissionFunction() const
{
return (const void*)GetAddressAtTarget((void*)m3ds_sdStopTransmission);
}
};
class M3DSReadSdSectorsDmaPatchCode : public PatchCode, public IReadSectorsDmaPatchCode
{
public:
M3DSReadSdSectorsDmaPatchCode(PatchHeap& patchHeap, const void* miiCardDmaCopy32Ptr,
const M3DSReadSdSectorsDmaHelperPatchCode* m3dsReadSdSectorsDmaHelperPatchCode)
: PatchCode(SECTION_START(m3ds_readsdsectorsdma), SECTION_SIZE(m3ds_readsdsectorsdma), patchHeap)
{
m3ds_readSdSectorsDma_miiCardDmaCopy32Ptr = (u32)miiCardDmaCopy32Ptr;
m3ds_readSdSectorsDma_applyCommand_address
= (u32)m3dsReadSdSectorsDmaHelperPatchCode->GetReadSdSectorsDmaApplyCommandFunction();
m3ds_readSdSectorsDma_sdStopTransmission_address
= (u32)m3dsReadSdSectorsDmaHelperPatchCode->GetSdStopTransmissionFunction();
_sdReadDmaFinishFunc = (ReadSectorsDmaFinishFunc)m3dsReadSdSectorsDmaHelperPatchCode->GetSdStopTransmissionFunction();
}
const ReadSectorsDmaFunc GetReadSectorsDmaFunction() const override
{
return (const ReadSectorsDmaFunc)GetAddressAtTarget((void*)m3ds_readSdSectorsDma);
}
const ReadSectorsDmaFinishFunc GetReadSectorsDmaFinishFunction() const override
{
return _sdReadDmaFinishFunc;
}
private:
ReadSectorsDmaFinishFunc _sdReadDmaFinishFunc = 0;
};