From 610f91d87152cbe48d3054fcf437d8239da6ef35 Mon Sep 17 00:00:00 2001
From: Amlal <amlalelmahrouss@icloud.com>
Date: Sat, 21 Dec 2024 21:59:13 +0100
Subject: IMP: :boom: Breaking changes some checks are needed to be done.

Signed-off-by: Amlal <amlalelmahrouss@icloud.com>
---
 dev/Kernel/KernelKit/PCI/DMA.h | 81 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 dev/Kernel/KernelKit/PCI/DMA.h

(limited to 'dev/Kernel/KernelKit/PCI/DMA.h')

diff --git a/dev/Kernel/KernelKit/PCI/DMA.h b/dev/Kernel/KernelKit/PCI/DMA.h
new file mode 100644
index 00000000..ab2adaa8
--- /dev/null
+++ b/dev/Kernel/KernelKit/PCI/DMA.h
@@ -0,0 +1,81 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024, TQ B.V, all rights reserved.
+
+------------------------------------------- */
+
+#pragma once
+
+#include <KernelKit/DeviceMgr.h>
+#include <KernelKit/PCI/Device.h>
+#include <NewKit/Array.h>
+#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(const UIntPtr off = 0);
+
+	public:
+			 operator bool();
+		bool operator!();
+
+	public:
+		bool	Write(const UIntPtr& bit, const UIntPtr& offset);
+		UIntPtr Read(const UIntPtr& offset);
+		Boolean Check(UIntPtr offset) const;
+
+	public:
+		UIntPtr operator[](const 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>
-- 
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