SCSILS120.hh

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/* Ported from:
** Source: /cvsroot/bluemsx/blueMSX/Src/IoDevice/ScsiDevice.h,v
** Revision: 1.6
** Date: 2007-05-22 20:05:38 +0200 (Tue, 22 May 2007)
**
** More info: http://www.bluemsx.com
**
** Copyright (C) 2003-2007 Daniel Vik, white cat
*/
#ifndef SCSILS120_HH
#define SCSILS120_HH
 
#include "SCSIDevice.hh"
 
#include "DiskContainer.hh"
#include "File.hh"
#include "MSXMotherBoard.hh"
#include "RecordedCommand.hh"
#include "SectorAccessibleDisk.hh"
 
#include <array>
#include <bitset>
#include <optional>
 
namespace openmsx {
 
class DeviceConfig;
class SCSILS120;
 
class LSXCommand final : public RecordedCommand
{
public:
        LSXCommand(CommandController& commandController,
                   StateChangeDistributor& stateChangeDistributor,
                   Scheduler& scheduler, SCSILS120& ls);
        void execute(std::span<const TclObject> tokens,
                     TclObject& result, EmuTime::param time) override;
        [[nodiscard]] std::string help(std::span<const TclObject> tokens) const override;
        void tabCompletion(std::vector<std::string>& tokens) const override;
private:
        SCSILS120& ls;
};
 
class SCSILS120 final : public SCSIDevice, public SectorAccessibleDisk
                      , public DiskContainer, public MediaInfoProvider
{
public:
        SCSILS120(const DeviceConfig& targetConfig,
                  AlignedBuffer& buf, unsigned mode);
        SCSILS120(const SCSILS120&) = delete;
        SCSILS120(SCSILS120&&) = delete;
        SCSILS120 operator=(const SCSILS120&) = delete;
        SCSILS120 operator=(SCSILS120&&) = delete;
        ~SCSILS120() override;
 
        // MediaInfoProvider
        void getMediaInfo(TclObject& result) override;
 
        template<typename Archive>
        void serialize(Archive& ar, unsigned version);
 
private:
        // SectorAccessibleDisk:
        void readSectorsImpl(
                std::span<SectorBuffer> buffers, size_t startSector) override;
        void writeSectorImpl(size_t sector, const SectorBuffer& buf) override;
        [[nodiscard]] size_t getNbSectorsImpl() const override;
        [[nodiscard]] bool isWriteProtectedImpl() const override;
        [[nodiscard]] Sha1Sum getSha1SumImpl(FilePool& filePool) override;
 
        // DiskContainer:
        [[nodiscard]] SectorAccessibleDisk* getSectorAccessibleDisk() override;
        [[nodiscard]] std::string_view getContainerName() const override;
        [[nodiscard]] bool diskChanged() override;
        int insertDisk(const std::string& filename) override;
 
        // SCSI Device
        void reset() override;
        [[nodiscard]] bool isSelected() override;
        [[nodiscard]] unsigned executeCmd(std::span<const uint8_t, 12> cdb, SCSI::Phase& phase, unsigned& blocks) override;
        [[nodiscard]] unsigned executingCmd(SCSI::Phase& phase, unsigned& blocks) override;
        [[nodiscard]] uint8_t getStatusCode() override;
        int msgOut(uint8_t value) override;
        uint8_t msgIn() override;
        void disconnect() override;
        void busReset() override;
        [[nodiscard]] unsigned dataIn(unsigned& blocks) override;
        [[nodiscard]] unsigned dataOut(unsigned& blocks) override;
 
        void eject();
        void insert(const std::string& filename);
 
        [[nodiscard]] bool getReady();
        void testUnitReady();
        void startStopUnit();
        [[nodiscard]] unsigned inquiry();
        [[nodiscard]] unsigned modeSense();
        [[nodiscard]] unsigned requestSense();
        [[nodiscard]] bool checkReadOnly();
        [[nodiscard]] unsigned readCapacity();
        [[nodiscard]] bool checkAddress();
        [[nodiscard]] unsigned readSector(unsigned& blocks);
        [[nodiscard]] unsigned writeSector(unsigned& blocks);
        void formatUnit();
 
private:
        MSXMotherBoard& motherBoard;
        AlignedBuffer& buffer;
        File file;
        std::optional<LSXCommand> lsxCommand; // delayed init
        std::string name;
        const unsigned mode;
        unsigned keycode;      // Sense key, ASC, ASCQ
        unsigned currentSector;
        unsigned currentLength;
        const uint8_t scsiId;  // SCSI ID 0..7
        bool unitAttention;    // Unit Attention (was: reset)
        bool mediaChanged;     // Enhanced change flag for MEGA-SCSI driver
        uint8_t message;
        uint8_t lun;
        std::array<uint8_t, 12> cdb; // Command Descriptor Block
 
        static constexpr unsigned MAX_LS = 26;
        using LSInUse = std::bitset<MAX_LS>;
        std::shared_ptr<LSInUse> lsInUse;
 
        friend class LSXCommand;
};
 
} // namespace openmsx
 
#endif