RASCSI/cpp/controllers/phase_handler.h

47 lines
1.3 KiB
C++

//---------------------------------------------------------------------------
//
// SCSI Target Emulator RaSCSI Reloaded
// for Raspberry Pi
//
// Copyright (C) 2022 Uwe Seimet
//
//---------------------------------------------------------------------------
#pragma once
#include "shared/scsi.h"
class PhaseHandler
{
BUS::phase_t phase = BUS::phase_t::busfree;
public:
PhaseHandler() = default;
virtual ~PhaseHandler() = default;
virtual void BusFree() = 0;
virtual void Selection() = 0;
virtual void Command() = 0;
virtual void Status() = 0;
virtual void DataIn() = 0;
virtual void DataOut() = 0;
virtual void MsgIn() = 0;
virtual void MsgOut() = 0;
virtual BUS::phase_t Process(int) = 0;
protected:
BUS::phase_t GetPhase() const { return phase; }
void SetPhase(BUS::phase_t p) { phase = p; }
bool IsSelection() const { return phase == BUS::phase_t::selection; }
bool IsBusFree() const { return phase == BUS::phase_t::busfree; }
bool IsCommand() const { return phase == BUS::phase_t::command; }
bool IsStatus() const { return phase == BUS::phase_t::status; }
bool IsDataIn() const { return phase == BUS::phase_t::datain; }
bool IsDataOut() const { return phase == BUS::phase_t::dataout; }
bool IsMsgIn() const { return phase == BUS::phase_t::msgin; }
bool IsMsgOut() const { return phase == BUS::phase_t::msgout; }
};