1 files changed, 112 insertions, 0 deletions
diff --git a/dev/Kernel/Modules/PS2/PS2MouseInterface.hxx b/dev/Kernel/Modules/PS2/PS2MouseInterface.hxx
new file mode 100644
index 00000000..0a0f4aa8
--- /dev/null
+++ b/dev/Kernel/Modules/PS2/PS2MouseInterface.hxx
@@ -0,0 +1,112 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+	File: PS2MouseInterface.hxx
+	Purpose: PS/2 mouse.
+
+	Revision History:
+
+	03/02/24: Added file (amlel)
+
+------------------------------------------- */
+
+#pragma once
+
+#include <ArchKit/ArchKit.hxx>
+#include <CompilerKit/CompilerKit.hxx>
+#include <NewKit/Defines.hxx>
+
+namespace Kernel
+{
+	/// @brief PS/2 Mouse driver interface
+	class PS2MouseInterface final
+	{
+	public:
+		explicit PS2MouseInterface() = default;
+		~PS2MouseInterface()		 = default;
+
+		NEWOS_COPY_DEFAULT(PS2MouseInterface);
+
+	public:
+		/// @brief Enables PS2 mouse for kernel.
+		/// @return
+		Void Init() noexcept
+		{
+			HAL::rt_cli();
+
+			HAL::Out8(0x64, 0xA8); // enabling the auxiliary device - mouse
+
+			this->Wait();
+			HAL::Out8(0x64, 0x20); // tells the keyboard controller that we want to send a command to the mouse
+			this->WaitInput();
+
+			UInt8 status = HAL::In8(0x60);
+			status |= 0b10;
+
+			this->Wait();
+			HAL::Out8(0x64, 0x60);
+			this->Wait();
+			HAL::Out8(0x60, status); // setting the correct bit is the "compaq" status byte
+
+			this->Write(0xF6);
+			this->Read();
+
+			this->Write(0xF4);
+			this->Read();
+
+			HAL::rt_sti();
+		}
+
+	public:
+		Bool WaitInput() noexcept
+		{
+			UInt64 timeout = 100000;
+
+			while (timeout)
+			{
+				if ((HAL::In8(0x64) & 0x1))
+				{
+					return true;
+				}
+
+				--timeout;
+			} // wait until we can read
+
+			// return the ack bit.
+			return false;
+		}
+
+		Bool Wait() noexcept
+		{
+			UInt64 timeout = 100000;
+
+			while (timeout)
+			{
+				if ((HAL::In8(0x64) & 0b10) == 0)
+				{
+					return true;
+				}
+
+				--timeout;
+			} // wait until we can read
+
+			// return the ack bit.
+			return false;
+		}
+
+		Void Write(UInt8 val)
+		{
+			HAL::Out8(0x64, 0xD4);
+			this->Wait();
+			HAL::Out8(0x60, val);
+			this->Wait();
+		}
+
+		UInt8 Read()
+		{
+			this->WaitInput();
+			return HAL::In8(0x60);
+		}
+	};
+} // namespace Kernel