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https://github.com/akuker/RASCSI.git
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117 lines
3.0 KiB
C++
117 lines
3.0 KiB
C++
//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator PiSCSI
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// for Raspberry Pi
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//
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// Copyright (C) 2022-2023 Uwe Seimet
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//
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// A device implementing mandatory SCSI primary commands, to be used for subclassing
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//
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//---------------------------------------------------------------------------
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#pragma once
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#include "shared/scsi.h"
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#include "interfaces/scsi_primary_commands.h"
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#include "controllers/abstract_controller.h"
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#include "device.h"
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#include "device_logger.h"
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#include <string>
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#include <unordered_map>
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#include <span>
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#include <functional>
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using namespace std;
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using namespace scsi_defs;
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class PrimaryDevice: private ScsiPrimaryCommands, public Device
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{
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friend class AbstractController;
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using operation = function<void()>;
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public:
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PrimaryDevice(PbDeviceType type, int lun) : Device(type, lun) {}
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~PrimaryDevice() override = default;
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virtual bool Init(const param_map&);
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virtual void CleanUp() {
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// Override if cleanup work is required for a derived device
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};
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virtual void Dispatch(scsi_command);
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int GetId() const override;
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virtual bool WriteByteSequence(span<const uint8_t>);
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int GetSendDelay() const { return send_delay; }
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bool CheckReservation(int, scsi_command, bool) const;
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void DiscardReservation();
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void Reset() override;
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virtual void FlushCache() {
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// Devices with a cache have to override this method
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}
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virtual vector<PbStatistics> GetStatistics() const {
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// Devices which provide statistics have to override this method
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return vector<PbStatistics>();
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}
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protected:
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void AddCommand(scsi_command, const operation&);
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vector<uint8_t> HandleInquiry(scsi_defs::device_type, scsi_level, bool) const;
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virtual vector<uint8_t> InquiryInternal() const = 0;
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void CheckReady();
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void SetSendDelay(int s) { send_delay = s; }
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void SendDiagnostic() override;
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void ReserveUnit() override;
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void ReleaseUnit() override;
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void EnterStatusPhase() const { controller->Status(); }
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void EnterDataInPhase() const { controller->DataIn(); }
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void EnterDataOutPhase() const { controller->DataOut(); }
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auto GetController() const { return controller; }
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void LogTrace(const string& s) const { device_logger.Trace(s); }
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void LogDebug(const string& s) const { device_logger.Debug(s); }
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void LogInfo(const string& s) const { device_logger.Info(s); }
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void LogWarn(const string& s) const { device_logger.Warn(s); }
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void LogError(const string& s) const { device_logger.Error(s); }
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private:
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static const int NOT_RESERVED = -2;
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void SetController(AbstractController *);
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void TestUnitReady() override;
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void RequestSense() override;
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void ReportLuns() override;
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void Inquiry() override;
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vector<byte> HandleRequestSense() const;
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// TODO Try to remove this field and use controller->Log*() methods instead
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DeviceLogger device_logger;
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// Owned by the controller manager
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AbstractController *controller = nullptr;
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unordered_map<scsi_command, operation> commands;
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int send_delay = BUS::SEND_NO_DELAY;
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int reserving_initiator = NOT_RESERVED;
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};
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