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// Copyright 2024-2025, Amlal El Mahrouss (amlal@nekernel.org)
// Licensed under the Apache License, Version 2.0 (see LICENSE file)
// Official repository: https://github.com/nekernel-org/nekernel
#include <ArchKit/ArchKit.h>
#include <KernelKit/PCI/DMA.h>
namespace Kernel {
DMAWrapper::operator bool() {
return this->fAddress;
}
bool DMAWrapper::operator!() {
return !this->fAddress;
}
Boolean DMAWrapper::Check(UIntPtr offset) const {
if (!this->fAddress) return false;
if (offset == 0) return false;
kout << "[DMAWrapper::IsIn] Checking offset...\r";
return reinterpret_cast<UIntPtr>(this->fAddress) >= offset;
}
bool DMAWrapper::Write(UIntPtr& bit, const UInt32& offset) {
kout << "[DMAWrapper::Read] Checking this->fAddress...\r";
if (!this->fAddress) return false;
(Void)(kout << "[DMAWrapper::Write] Writing at address: "
<< hex_number(reinterpret_cast<UIntPtr>(this->fAddress) + offset) << kendl);
ke_dma_write<UInt32>(reinterpret_cast<UIntPtr>(this->fAddress), offset, bit);
return true;
}
UIntPtr DMAWrapper::Read(const UInt32& offset) {
kout << "[DMAWrapper::Read] Checking this->fAddress...\r";
if (!this->fAddress) return ~0;
(Void)(kout << "[DMAWrapper::Write] Writing at address: "
<< hex_number(reinterpret_cast<UIntPtr>(this->fAddress) + offset) << kendl);
return (UIntPtr) ke_dma_read<UInt32>(reinterpret_cast<UIntPtr>(this->fAddress), offset);
}
UIntPtr DMAWrapper::operator[](UIntPtr& offset) {
return this->Read(offset);
}
OwnPtr<IOBuf<Char*>> DMAFactory::Construct(OwnPtr<DMAWrapper>& dma) {
if (!dma) return {};
OwnPtr<IOBuf<Char*>> dmaOwnPtr =
make_ptr<IOBuf<Char*>, char*>(reinterpret_cast<char*>(dma->fAddress));
if (!dmaOwnPtr) return {};
kout << "Returning the new OwnPtr<IOBuf<Char*>>!\r";
return dmaOwnPtr;
}
DMAWrapper& DMAWrapper::operator=(voidPtr Ptr) {
this->fAddress = Ptr;
return *this;
}
} // namespace Kernel
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