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1.1 root 1: //
2: // nono
3: // Copyright (C) 2018 [email protected]
4: //
5:
6: #pragma once
7:
8: #include "device.h"
9:
1.1.1.2 ! root 10: // このクラスは SCSI プロトコル上の定数などだけを持つ。
1.1 root 11: class SCSI
12: {
13: public:
1.1.1.2 ! root 14: static const uint IO = 0x01;
! 15: static const uint CD = 0x02;
! 16: static const uint MSG = 0x04;
! 17: static const uint BSY = 0x08;
! 18: static const uint SEL = 0x10;
! 19:
! 20: // SCSI のフェーズを表す。
! 21: // フェーズは概ね BSY と SEL の状態遷移によって決まる。
! 22: // 情報転送フェーズの内訳は XferPhase 側で区別する。
! 23: enum Phase {
! 24: BusFree = 0,
! 25: Arbitration = 1,
! 26: Selection = 2,
! 27: Reselection = 3,
! 28: Transfer = 4,
1.1 root 29: };
30:
1.1.1.2 ! root 31: // 情報転送フェーズを表す。
! 32: // この値は MSG,CD,IO で表現できる値をそのまま流用して表現する。
! 33: enum XferPhase { // MSG CD IO
! 34: DataOut = 0, // 0 0 0
! 35: DataIn = 1, // 0 0 1
! 36: Command = 2, // 0 1 0
! 37: Status = 3, // 0 1 1
! 38: MsgOut = 6, // 1 1 0
! 39: MsgIn = 7, // 1 1 1
1.1 root 40:
1.1.1.2 ! root 41: End = -1, // SCSICmd 内でフェーズ遷移を表現するために使う
! 42: };
! 43:
! 44: // フェーズ文字列を返す
! 45: static const char * const GetPhaseName(int phase) {
! 46: return GetPhaseName((Phase)phase);
! 47: }
! 48: static const char * const GetPhaseName(Phase phase) {
! 49: switch (phase) {
! 50: case BusFree: return "BusFree";
! 51: case Arbitration: return "Arbitration";
! 52: case Selection: return "Selection";
! 53: case Reselection: return "Reselection";
! 54: case Transfer: return "Transfer";
! 55: }
! 56: return "Phase?";
! 57: }
! 58:
! 59: // 情報転送フェーズ文字列を返す
! 60: static const char * const GetXferPhaseName(int xfer) {
! 61: return GetXferPhaseName((XferPhase)xfer);
! 62: }
! 63: static const char * const GetXferPhaseName(XferPhase xfer) {
! 64: switch (xfer) {
! 65: case DataOut: return "DataOut";
! 66: case DataIn: return "DataIn";
! 67: case Command: return "Command";
! 68: case Status: return "Status";
! 69: case MsgOut: return "MsgOut";
! 70: case MsgIn: return "MsgIn";
! 71: case End: return "End";
! 72: }
! 73: return "XferPhase?";
! 74: }
! 75:
! 76: // デバイス種別
! 77: enum DevType {
! 78: None = 0,
! 79: HD,
1.1 root 80: };
81:
82: // コマンド。
83: // ダイレクトアクセスデバイスのコマンドを元にしている。
84: // シーケンシャルアクセスデバイスでは 0x01 が Rewind だったり
85: // 同じコードで違うコマンドのようだが、とりあえずそれは放置。
86: struct Command {
87: // Group0
88: static const uint TestUnitReady = 0x00; // 共通
89: static const uint RezeroUnit = 0x01;
90: static const uint RequestSense = 0x03; // 共通
91: static const uint FormatUnit = 0x04;
92: static const uint ReassignBlocks = 0x07;
93: static const uint Read6 = 0x08;
94: static const uint Write6 = 0x0a;
95: static const uint Seek6 = 0x0b;
96: static const uint Inquiry = 0x12; // 共通
97: static const uint ModeSelect6 = 0x15; // 共通
98: static const uint Reserve = 0x16;
99: static const uint Release = 0x17;
100: static const uint Copy = 0x18; // 共通
101: static const uint ModeSense6 = 0x1a;
102: static const uint StartStopUnit = 0x1b;
103: static const uint ReceiveDiagnosticResults = 0x1c; // 共通
104: static const uint SendDiagnostic = 0x1d; // 共通
105: static const uint PreventAllowMediumRemoval = 0x1e;
106: // Group1
107: static const uint ReadCapacity = 0x25;
108: static const uint Read10 = 0x28;
109: static const uint Write10 = 0x2a;
110: static const uint Seek10 = 0x2b;
111: // Group1
112: static const uint WriteAndVerify10 = 0x2e;
113: static const uint Verify10 = 0x2f;
114: static const uint SearchDataHigh10 = 0x30;
115: static const uint SearchDataEqual10 = 0x31;
116: static const uint SearchDataLow10 = 0x32;
117: static const uint SetLimits = 0x33;
118: static const uint PreFetch = 0x34;
119: static const uint SynchronizeCache = 0x35;
120: static const uint LockUnlockCache = 0x36;
121: static const uint ReadDefectData10 = 0x37;
122: static const uint Compare = 0x39; // 共通
123: static const uint CopyAndVerify = 0x3a; // 共通
124: static const uint WriteBuffer = 0x3b; // 共通
125: static const uint ReadBuffer = 0x3c; // 共通
126: static const uint ReadLong = 0x3e;
127: static const uint WriteLong = 0x3f;
128: // Group2
129: static const uint ChangeDefinition = 0x40;
130: static const uint WriteSame = 0x41;
131: static const uint LogSelect = 0x4c; // 共通
132: static const uint LogSense = 0x4d; // 共通
133: static const uint ModeSelect10 = 0x55; // 共通
134: static const uint ModeSense10 = 0x5a; // 共通
135: static const uint MAX = 0x5b; // 最大値+1にすること
136: };
137:
138: // ステータスバイト
139: struct StatusByte {
140: static const uint8 Good = (0x00 << 1);
141: static const uint8 CheckCondition = (0x01 << 1);
142: static const uint8 ConditionMet = (0x02 << 1);
143: static const uint8 Busy = (0x04 << 1);
144: static const uint8 Intermediate = (0x08 << 1);
145: static const uint8 IntermediateCondMet = (0x0a << 1);
146: static const uint8 ReservationConflict = (0x0c << 1);
147: static const uint8 CommandTerminated = (0x11 << 1);
148: static const uint8 QueueFull = (0x14 << 1);
149: };
150:
151: // メッセージバイト
152: struct MsgByte {
153: static const uint8 CommandComplete = 0x00;
154: static const uint8 ExtendMessage = 0x01;
155: static const uint8 SaveDataPointer = 0x02;
156: static const uint8 RestorePointers = 0x03;
157: static const uint8 Disconnect = 0x04;
158: static const uint8 InitiatorDetectedError = 0x05;
159: static const uint8 Abort = 0x06;
160: static const uint8 MessageReject = 0x07;
161: static const uint8 NoOperation = 0x08;
162: static const uint8 MessageParityError = 0x09;
163: static const uint8 LinkedCommandComplete = 0x0a;
164: static const uint8 LinkedCommandCompleteWithFlag = 0x0b;
165: static const uint8 BusDeviceReset = 0x0c;
166: static const uint8 AbortTag = 0x0d;
167: static const uint8 ClearQueue = 0x0e;
168: static const uint8 InitiateRecovery = 0x0f;
169: static const uint8 ReleaseRecovery = 0x10;
170: static const uint8 TerminateIOProcess = 0x11;
171: static const uint8 SimpleQueueTag = 0x20;
172: static const uint8 HeadOfQueueTag = 0x21;
173: static const uint8 OrderedQueueTag = 0x22;
174: static const uint8 IgnoreWideResidue = 0x23;
175: static const uint8 Identify = 0x80; // 0x80..0xff
176: };
177:
178: // Mode Select(6) ヘッダ
179: struct ModeParamHdr {
180: uint8 mode_param_len; // ヘッダ以降のバイト数
181: uint8 media_type;
182: uint8 device_specific_param;
183: uint8 block_desc_len; // 0 か 8の倍数
184: } __packed;
185:
186: // Mode Select(6) ブロックディスクリプタ
187: struct BlockDesc {
188: uint8 density_code;
189: uint8 block_cnt[3]; // ブロック数
190: uint8 reserved;
191: uint8 block_size[3]; // 論理ブロック長 (バイト)
192: } __packed;
193:
1.1.1.2 ! root 194: // SCSI コマンド名を返す
! 195: static const char *GetCommandName(uint8 cmd);
1.1 root 196:
197: private:
198: static const char * const commandname[Command::MAX];
199: };
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