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31 #ifndef __DEV_X86_I8259_HH__
32 #define __DEV_X86_I8259_HH__
34 #include "dev/x86/intdev.hh"
35 #include "dev/io_device.hh"
36 #include "enums/X86I8259CascadeMode.hh"
37 #include "params/I8259.hh"
42 class I8259 : public BasicPioDevice, public IntDevice
45 static const int NumLines = 8;
46 bool pinStates[NumLines];
50 Enums::X86I8259CascadeMode mode;
53 // Interrupt Request Register
55 // In Service Register
57 // Interrupt Mask Register
60 // The higher order bits of the vector to return
64 // A bit vector of lines with slaves attached, or the slave id, depending
65 // on if this is a master or slave PIC.
71 // State machine information for reading in initialization control words.
75 // Whether or not the PIC is in auto EOI mode.
78 void requestInterrupt(int line);
79 void handleEOI(int line);
82 typedef I8259Params Params;
87 return dynamic_cast<const Params *>(_params);
92 Tick read(PacketPtr pkt) override;
93 Tick write(PacketPtr pkt) override;
107 void signalInterrupt(int line) override;
108 void raiseInterruptPin(int number) override;
109 void lowerInterruptPin(int number) override;
112 void serialize(CheckpointOut &cp) const override;
113 void unserialize(CheckpointIn &cp) override;
116 } // namespace X86ISA
118 #endif //__DEV_X86_I8259_HH__