1 files changed, 75 insertions, 0 deletions
diff --git a/src/kernel/KernelKit/PCI/DMA.h b/src/kernel/KernelKit/PCI/DMA.h
new file mode 100644
index 00000000..80103dab
--- /dev/null
+++ b/src/kernel/KernelKit/PCI/DMA.h
@@ -0,0 +1,75 @@
+/* ========================================
+
+  Copyright (C) 2024-2025, Amlal El Mahrouss, licensed under the Apache 2.0 license.
+
+======================================== */
+
+#pragma once
+
+#include <KernelKit/DeviceMgr.h>
+#include <KernelKit/PCI/Device.h>
+#include <NeKit/Array.h>
+#include <NeKit/OwnPtr.h>
+#include <NeKit/Ref.h>
+
+namespace Kernel {
+enum class DmaKind {
+  PCI = 10,  // 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.
+  Count   = 2,
+  Invalid = 0,
+};
+
+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>