mirror of
https://github.com/akuker/RASCSI.git
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146 lines
3.9 KiB
C++
146 lines
3.9 KiB
C++
//---------------------------------------------------------------------------
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//
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// X68000 EMULATOR "XM6"
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//
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// Copyright (C) 2001-2006 ＰＩ．(ytanaka@ipc-tokai.or.jp)
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// Copyright (C) 2014-2020 GIMONS
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//
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// XM6i
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// Copyright (C) 2010-2015 isaki@NetBSD.org
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//
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// Imported sava's Anex86/T98Next image and MO format support patch.
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// Comments translated to english by akuker.
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//
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// [ Disk ]
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//
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//---------------------------------------------------------------------------
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#pragma once
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#include "log.h"
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#include "scsi.h"
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#include "device.h"
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#include "device_factory.h"
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#include "disk_track_cache.h"
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#include "file_support.h"
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#include "filepath.h"
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#include "interfaces/scsi_block_commands.h"
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#include "mode_page_device.h"
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#include <string>
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#include <unordered_set>
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#include <unordered_map>
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using namespace std;
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class Disk : public ModePageDevice, public ScsiBlockCommands
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{
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private:
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enum access_mode { RW6, RW10, RW16, SEEK6, SEEK10 };
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// The supported configurable block sizes, empty if not configurable
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unordered_set<uint32_t> sector_sizes;
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uint32_t configured_sector_size = 0;
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using disk_t = struct {
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uint32_t size; // Sector Size (9=512, 10=1024, 11=2048, 12=4096)
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uint64_t blocks; // Total number of sectors
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DiskCache *dcache; // Disk cache
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off_t image_offset; // Offset to actual data
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bool is_medium_changed;
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};
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Dispatcher<Disk> dispatcher;
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public:
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explicit Disk(const string&);
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~Disk() override;
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Disk(Disk&) = delete;
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Disk& operator=(const Disk&) = delete;
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bool Dispatch() override;
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void MediumChanged();
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bool Eject(bool) override;
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// Command helpers
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virtual int WriteCheck(uint64_t);
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virtual void Write(const DWORD *, BYTE *, uint64_t);
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virtual int Read(const DWORD *, BYTE *, uint64_t);
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uint32_t GetSectorSizeInBytes() const;
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bool IsSectorSizeConfigurable() const;
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bool SetConfiguredSectorSize(uint32_t);
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uint64_t GetBlockCount() const;
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void FlushCache() override;
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private:
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using super = ModePageDevice;
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// Commands covered by the SCSI specifications (see https://www.t10.org/drafts.htm)
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void StartStopUnit();
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void SendDiagnostic();
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void PreventAllowMediumRemoval();
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void SynchronizeCache10();
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void SynchronizeCache16();
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void ReadDefectData10();
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virtual void Read6();
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void Read10() override;
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void Read16() override;
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virtual void Write6();
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void Write10() override;
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void Write16() override;
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void Verify10();
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void Verify16();
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void Seek();
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void Seek10();
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void ReadCapacity10() override;
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void ReadCapacity16() override;
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void Reserve();
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void Release();
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void Rezero();
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void FormatUnit() override;
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void ReassignBlocks();
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void Seek6();
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void Read(access_mode);
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void Write(access_mode);
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void Verify(access_mode);
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void ReadWriteLong10();
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void ReadWriteLong16();
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void ReadCapacity16_ReadLong16();
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void Format(const DWORD *);
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bool SendDiag(const DWORD *) const;
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bool StartStop(const DWORD *);
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void ValidateBlockAddress(access_mode) const;
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bool CheckAndGetStartAndCount(uint64_t&, uint32_t&, access_mode);
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int ModeSense6(const DWORD *, BYTE *, int) override;
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int ModeSense10(const DWORD *, BYTE *, int) override;
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protected:
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virtual void Open(const Filepath&);
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virtual void SetDeviceParameters(BYTE *) const;
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void AddModePages(map<int, vector<BYTE>>&, int, bool) const override;
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virtual void AddErrorPage(map<int, vector<BYTE>>&, bool) const;
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virtual void AddFormatPage(map<int, vector<BYTE>>&, bool) const;
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virtual void AddDrivePage(map<int, vector<BYTE>>&, bool) const;
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void AddCachePage(map<int, vector<BYTE>>&, bool) const;
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virtual void AddVendorPage(map<int, vector<BYTE>>&, int, bool) const;
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unordered_set<uint32_t> GetSectorSizes() const;
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void SetSectorSizes(const unordered_set<uint32_t>&);
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void SetSectorSizeInBytes(uint32_t);
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uint32_t GetSectorSizeShiftCount() const;
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void SetSectorSizeShiftCount(uint32_t);
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uint32_t GetConfiguredSectorSize() const;
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void SetBlockCount(uint64_t);
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// Internal disk data
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disk_t disk = {};
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};
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