diff options
Diffstat (limited to 'dev/kernel/KernelKit/PCI/DMA.h')
| -rw-r--r-- | dev/kernel/KernelKit/PCI/DMA.h | 125 |
1 files changed, 59 insertions, 66 deletions
diff --git a/dev/kernel/KernelKit/PCI/DMA.h b/dev/kernel/KernelKit/PCI/DMA.h index b2d3cfa8..28256389 100644 --- a/dev/kernel/KernelKit/PCI/DMA.h +++ b/dev/kernel/KernelKit/PCI/DMA.h @@ -1,6 +1,6 @@ /* ------------------------------------------- - Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved. + Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved. ------------------------------------------- */ @@ -12,70 +12,63 @@ #include <NewKit/OwnPtr.h> #include <NewKit/Ref.h> -namespace Kernel -{ - enum class DmaKind - { - PCI, // Bus mastering is required to be turned on. Basiaclly a request - // control system. 64-Bit access depends on the PAE bit and the device - // (if Double Address Cycle is available) - ISA, // Four DMA channels 0-3; 8 bit transfers and only a megabyte of RAM. - Invalid, - }; - - class DMAWrapper final - { - public: - explicit DMAWrapper() = delete; - - public: - explicit DMAWrapper(nullPtr) = delete; - explicit DMAWrapper(voidPtr Ptr, DmaKind Kind = DmaKind::PCI) - : fAddress(Ptr), fKind(Kind) - { - } - - public: - DMAWrapper& operator=(voidPtr Ptr); - - public: - DMAWrapper& operator=(const DMAWrapper&) = default; - DMAWrapper(const DMAWrapper&) = default; - - public: - ~DMAWrapper() = default; - - template <class T> - T* operator->(); - - template <class T> - T* Get(UIntPtr off = 0); - - public: - operator bool(); - bool operator!(); - - public: - bool Write(UIntPtr& bit, const UInt32& offset); - UIntPtr Read(const UInt32& offset); - Boolean Check(UIntPtr offset) const; - - public: - UIntPtr operator[](UIntPtr& offset); - - private: - voidPtr fAddress{nullptr}; - DmaKind fKind{DmaKind::Invalid}; - - private: - friend class DMAFactory; - }; - - class DMAFactory final - { - public: - static OwnPtr<IOBuf<Char*>> Construct(OwnPtr<DMAWrapper>& dma); - }; -} // namespace Kernel +namespace Kernel { +enum class DmaKind { + PCI, // Bus mastering is required to be turned on. Basiaclly a request + // control system. 64-Bit access depends on the PAE bit and the device + // (if Double Address Cycle is available) + ISA, // Four DMA channels 0-3; 8 bit transfers and only a megabyte of RAM. + Invalid, +}; + +class DMAWrapper final { + public: + explicit DMAWrapper() = delete; + + public: + explicit DMAWrapper(nullPtr) = delete; + explicit DMAWrapper(voidPtr Ptr, DmaKind Kind = DmaKind::PCI) : fAddress(Ptr), fKind(Kind) {} + + public: + DMAWrapper& operator=(voidPtr Ptr); + + public: + DMAWrapper& operator=(const DMAWrapper&) = default; + DMAWrapper(const DMAWrapper&) = default; + + public: + ~DMAWrapper() = default; + + template <class T> + T* operator->(); + + template <class T> + T* Get(UIntPtr off = 0); + + public: + operator bool(); + bool operator!(); + + public: + bool Write(UIntPtr& bit, const UInt32& offset); + UIntPtr Read(const UInt32& offset); + Boolean Check(UIntPtr offset) const; + + public: + UIntPtr operator[](UIntPtr& offset); + + private: + voidPtr fAddress{nullptr}; + DmaKind fKind{DmaKind::Invalid}; + + private: + friend class DMAFactory; +}; + +class DMAFactory final { + public: + static OwnPtr<IOBuf<Char*>> Construct(OwnPtr<DMAWrapper>& dma); +}; +} // namespace Kernel #include <KernelKit/PCI/DMA.inl> |
