1 files changed, 115 insertions, 0 deletions
diff --git a/arch/x86/ic/Pic.h b/arch/x86/ic/Pic.h
new file mode 100644
index 0000000..9739e05
--- /dev/null
+++ b/arch/x86/ic/Pic.h
@@ -0,0 +1,115 @@
+#ifndef PIC_H
+#define PIC_H
+
+#include "../idt/Idt.h"
+#include "../port/Operations"
+#include "IPic.h"
+#include <ISingleton.h>
+
+class ICW1 : public ICW
+{
+    private:
+        uint8 word;
+    public:
+        // Const part of ICW1 is high byte
+        const static uint8 byteHigh = 0x10;
+        // Inittialize bit and ICW4 recieve bit
+        const static uint8 wordDefault = byteHigh | 0x01;
+        ICW1();
+        ICW1(const uint8 icw);
+        bool isExpectIcw4();
+        virtual const uint8 toByteMasterPic() const override final;
+        virtual const uint8 toByteSlavePic() const override final;
+        virtual const uint8 getNumber() const override final;
+};
+
+class ICW2 : public ICW
+{
+    private:
+        uint8 lvtAddr;
+    public:
+        ICW2();
+        ICW2(const uint8 icw);
+        virtual const uint8 toByteMasterPic() const override final;
+        virtual const uint8 toByteSlavePic() const override final;
+        virtual const uint8 getNumber() const override final;
+};
+
+class ICW3 : public ICW
+{
+    private:
+        const static uint8 irqTwoLine = 0x4;
+        const static uint8 irqTwoLineBinary = 0x2;
+        uint8 irqConnPrimaryPic;
+        uint8 irqConnSecondaryPic;
+    public:
+        ICW3();
+        ICW3(const uint8 icwMaster);
+        virtual const uint8 toByteMasterPic() const override final;
+        virtual const uint8 toByteSlavePic() const override final;
+        virtual const uint8 getNumber() const override final;
+};
+
+class ICW4 : public ICW
+{
+    private:
+        static const uint8 defaultWord = 0x01;
+        uint8 word;
+    public:
+        ICW4();
+        ICW4(const uint8 icw);
+        virtual const uint8 toByteMasterPic() const override final;
+        virtual const uint8 toByteSlavePic() const override final;
+        virtual const uint8 getNumber() const override final;
+};
+
+class Pic
+{
+    protected:
+
+        static const uint8 numberWords = 4;
+        static const uint8 readIrr = 0xa;
+        static const uint8 readIsr = 0xb;
+        static const uint8 eoiCommand = 0x20;
+
+    private:
+        ICW1 icw1;
+        ICW2 icw2;
+        ICW3 icw3;
+        ICW4 icw4;
+        bool isIcwsCorrect(const ICW *icws[numberWords]);
+
+    protected:
+        Pic();
+        Pic(const ICW *icws[numberWords]);
+        Pic(const Pic &) = default;
+
+    public:
+        static const uint8 numberIrq = 16;
+        // Valid equals from 0 to 7 and from 8 to 15
+        // Return true if ISR not set, false is success
+        bool enableIrq(uint8 irqNumber);
+        void disableIrq(uint8 irqNumber);
+        static uint8 getIsrMaster();
+        static uint8 getIsrSlave();
+        static uint8 getIrrMaster();
+        static void sendEoi();
+        // Set IMR to -xff
+        static void disable();
+};
+
+// Be more careful with instance of Pic.
+// When SingletonPic instance been deleted, Pic instance not be more exist
+class SingletonPic : public Pic, public ISingleton<Pic>
+{
+    private:
+        static bool isEntityAfter;
+        bool isEntityFirst;
+
+    public:
+        SingletonPic();
+        SingletonPic(const ICW *icws[numberWords]);
+        virtual Pic *getInstance() override final;
+};
+
+#endif