feat: Local/IO APIC, PS/2 keyboard & mouse

kernel/src/Drivers/PS2/PS2Controller.hpp

@@ -0,0 +1,57 @@
+/*
+    * PS2Controller.hpp
+    * PS/2 Controller (8042) initialization and utility functions
+    * Copyright (c) 2025 Daniel Hammer
+*/
+
+#pragma once
+#include <cstdint>
+
+namespace Drivers::PS2 {
+
+    // PS/2 controller I/O ports
+    constexpr uint16_t DataPort    = 0x60;
+    constexpr uint16_t StatusPort  = 0x64;
+    constexpr uint16_t CommandPort = 0x64;
+
+    // PS/2 controller commands
+    constexpr uint8_t CmdReadConfig      = 0x20;
+    constexpr uint8_t CmdWriteConfig     = 0x60;
+    constexpr uint8_t CmdDisablePort2    = 0xA7;
+    constexpr uint8_t CmdEnablePort2     = 0xA8;
+    constexpr uint8_t CmdTestPort2       = 0xA9;
+    constexpr uint8_t CmdSelfTest        = 0xAA;
+    constexpr uint8_t CmdTestPort1       = 0xAB;
+    constexpr uint8_t CmdDisablePort1    = 0xAD;
+    constexpr uint8_t CmdEnablePort1     = 0xAE;
+    constexpr uint8_t CmdWritePort2Input = 0xD4;
+
+    // PS/2 controller status register bits
+    constexpr uint8_t StatusOutputFull = 0x01;
+    constexpr uint8_t StatusInputFull  = 0x02;
+
+    // PS/2 controller self-test result
+    constexpr uint8_t SelfTestPass = 0x55;
+    constexpr uint8_t PortTestPass = 0x00;
+
+    // Configuration byte bits
+    constexpr uint8_t ConfigPort1Interrupt  = (1 << 0);
+    constexpr uint8_t ConfigPort2Interrupt  = (1 << 1);
+    constexpr uint8_t ConfigPort1Clock      = (1 << 4);
+    constexpr uint8_t ConfigPort2Clock      = (1 << 5);
+    constexpr uint8_t ConfigPort1Translation = (1 << 6);
+
+    void Initialize();
+
+    void SendCommand(uint8_t command);
+    void SendData(uint8_t data);
+    uint8_t ReadData();
+    void WaitForInput();
+    void WaitForOutput();
+    void FlushOutputBuffer();
+
+    void SendToPort2(uint8_t data);
+
+    bool IsDualChannel();
+
+};