SCSIDevice.hh

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#ifndef SCSIDEVICE_HH
#define SCSIDEVICE_HH
 
#include "SCSI.hh"
#include <span>
 
namespace openmsx {
 
class SCSIDevice
{
public:
        static constexpr unsigned BIT_SCSI2          = 0x0001;
        static constexpr unsigned BIT_SCSI2_ONLY     = 0x0002;
        static constexpr unsigned BIT_SCSI3          = 0x0004;
 
        static constexpr unsigned MODE_SCSI1         = 0x0000;
        static constexpr unsigned MODE_SCSI2         = 0x0003;
        static constexpr unsigned MODE_SCSI3         = 0x0005;
        static constexpr unsigned MODE_UNITATTENTION = 0x0008; // report unit attention
        static constexpr unsigned MODE_MEGASCSI      = 0x0010; // report disk change when call of
                                                      // 'test unit ready'
        static constexpr unsigned MODE_NOVAXIS       = 0x0100;
 
        static constexpr unsigned BUFFER_SIZE   = 0x10000; // 64KB
 
        virtual ~SCSIDevice() = default;
 
        virtual void reset() = 0;
        virtual bool isSelected() = 0;
        [[nodiscard]] virtual unsigned executeCmd(std::span<const uint8_t, 12> cdb, SCSI::Phase& phase,
                                                  unsigned& blocks) = 0;
        [[nodiscard]] virtual unsigned executingCmd(SCSI::Phase& phase, unsigned& blocks) = 0;
        [[nodiscard]] virtual uint8_t getStatusCode() = 0;
        virtual int msgOut(uint8_t value) = 0;
        virtual uint8_t msgIn() = 0;
        virtual void disconnect() = 0;
        virtual void busReset() = 0; // only used in MB89352 controller
 
        [[nodiscard]] virtual unsigned dataIn(unsigned& blocks) = 0;
        [[nodiscard]] virtual unsigned dataOut(unsigned& blocks) = 0;
};
 
} // namespace openmsx
 
#endif