1 files changed, 140 insertions, 0 deletions
diff --git a/dev/kernel/KernelKit/DeviceMgr.h b/dev/kernel/KernelKit/DeviceMgr.h
new file mode 100644
index 00000000..fa68d2e7
--- /dev/null
+++ b/dev/kernel/KernelKit/DeviceMgr.h
@@ -0,0 +1,140 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+/* -------------------------------------------
+
+ Revision History:
+
+	 31/01/24: Add kDeviceCnt (amlel)
+		15/11/24: Add NE_DEVICE macro, to inherit from device object.
+
+ ------------------------------------------- */
+
+#pragma once
+
+/* @note Device Mgr. */
+/* @file KernelKit/DeviceMgr.h */
+/* @brief Device abstraction and I/O buffer. */
+
+#include <NewKit/ErrorOr.h>
+#include <NewKit/Ref.h>
+
+#define kDeviceMgrRootDirPath "/Devices/"
+
+#define NE_DEVICE : public ::NeOS::IDeviceObject
+
+// Last Rev: Wed, Apr  3, 2024  9:09:41 AM
+
+namespace NeOS
+{
+	template <typename T>
+	class IDeviceObject;
+
+	/***********************************************************************************/
+	/// @brief Device contract interface, represents an HW device.
+	/***********************************************************************************/
+	template <typename T>
+	class IDeviceObject
+	{
+	public:
+		explicit IDeviceObject(void (*Out)(IDeviceObject<T>*, T), void (*In)(IDeviceObject<T>*, T))
+			: fOut(Out), fIn(In)
+		{
+		}
+
+		virtual ~IDeviceObject() = default;
+
+	public:
+		IDeviceObject& operator=(const IDeviceObject<T>&) = default;
+		IDeviceObject(const IDeviceObject<T>&)			  = default;
+
+	public:
+		virtual IDeviceObject<T>& operator<<(T Data)
+		{
+			fOut(this, Data);
+			return *this;
+		}
+
+		virtual IDeviceObject<T>& operator>>(T Data)
+		{
+			fIn(this, Data);
+			return *this;
+		}
+
+		virtual const char* Name() const
+		{
+			return "/dev/null";
+		}
+
+		operator bool()
+		{
+			return fOut && fIn;
+		}
+
+		Bool operator!()
+		{
+			return !fOut || !fIn;
+		}
+
+	protected:
+		Void (*fOut)(IDeviceObject<T>*, T Data) = {nullptr};
+		Void (*fIn)(IDeviceObject<T>*, T Data)	= {nullptr};
+	};
+
+	///
+	/// @brief Input Output abstract class.
+	/// Used mainly to communicate between OS to hardware.
+	///
+	template <typename T>
+	class IOBuf final
+	{
+	public:
+		explicit IOBuf(T dma_addr)
+			: fData(dma_addr)
+		{
+			// At least pass something valid when instancating this struct.
+			MUST_PASS(fData);
+		}
+
+		IOBuf& operator=(const IOBuf<T>&) = default;
+		IOBuf(const IOBuf<T>&)			  = default;
+
+		~IOBuf() = default;
+
+	public:
+		template <typename R>
+		R operator->() const
+		{
+			return fData;
+		}
+
+		template <typename R>
+		R& operator[](Size index) const
+		{
+			return fData[index];
+		}
+
+	private:
+		T fData;
+	};
+
+	///! @brief Device enum types.
+	enum
+	{
+		kDeviceTypeIDE,
+		kDeviceTypeEthernet,
+		kDeviceTypeWiFi,
+		kDeviceTypeFW,
+		kDeviceTypeBT,
+		kDeviceTypeRS232,
+		kDeviceTypeSCSI,
+		kDeviceTypeAHCI,
+		kDeviceTypeMBCI,
+		kDeviceTypeUSB,
+		kDeviceTypeMediaCtrl, // MM controller
+		kDeviceTypeCount,
+	};
+} // namespace NeOS