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570 lines
22 KiB
C#
570 lines
22 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : CSD.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Component
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Description
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2017 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Text;
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namespace DiscImageChef.Decoders.SecureDigital
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{
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public class CSD
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{
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public byte Structure;
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public byte TAAC;
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public byte NSAC;
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public byte Speed;
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public ushort Classes;
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public byte ReadBlockLength;
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public bool ReadsPartialBlocks;
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public bool WriteMisalignment;
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public bool ReadMisalignment;
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public bool DSRImplemented;
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public uint Size;
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public byte ReadCurrentAtVddMin;
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public byte ReadCurrentAtVddMax;
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public byte WriteCurrentAtVddMin;
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public byte WriteCurrentAtVddMax;
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public byte SizeMultiplier;
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public bool EraseBlockEnable;
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public byte EraseSectorSize;
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public byte WriteProtectGroupSize;
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public bool WriteProtectGroupEnable;
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public byte WriteSpeedFactor;
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public byte WriteBlockLength;
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public bool WritesPartialBlocks;
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public bool FileFormatGroup;
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public bool Copy;
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public bool PermanentWriteProtect;
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public bool TemporaryWriteProtect;
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public byte FileFormat;
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public byte CRC;
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}
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public partial class Decoders
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{
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public static CSD DecodeCSD(uint[] response)
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{
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if(response == null)
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return null;
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if(response.Length != 4)
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return null;
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byte[] data = new byte[16];
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byte[] tmp = new byte[4];
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tmp = BitConverter.GetBytes(response[0]);
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Array.Copy(tmp, 0, data, 0, 4);
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tmp = BitConverter.GetBytes(response[1]);
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Array.Copy(tmp, 0, data, 4, 4);
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tmp = BitConverter.GetBytes(response[2]);
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Array.Copy(tmp, 0, data, 8, 4);
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tmp = BitConverter.GetBytes(response[3]);
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Array.Copy(tmp, 0, data, 12, 4);
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return DecodeCSD(data);
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}
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public static CSD DecodeCSD(byte[] response)
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{
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if(response == null)
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return null;
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if(response.Length != 16)
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return null;
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CSD csd = new CSD();
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csd.Structure = (byte)((response[0] & 0xC0) >> 6);
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csd.TAAC = response[1];
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csd.NSAC = response[2];
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csd.Speed = response[3];
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csd.Classes = (ushort)((response[4] << 4) + ((response[5] & 0xF0) >> 4));
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csd.ReadBlockLength = (byte)(response[5] & 0x0F);
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csd.ReadsPartialBlocks = (response[6] & 0x80) == 0x80;
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csd.WriteMisalignment = (response[6] & 0x40) == 0x40;
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csd.ReadMisalignment = (response[6] & 0x20) == 0x20;
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csd.DSRImplemented = (response[6] & 0x10) == 0x10;
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if(csd.Structure == 0)
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{
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csd.Size = (ushort)(((response[6] & 0x03) << 10) + (response[7] << 2) + ((response[8] & 0xC0) >> 6));
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csd.ReadCurrentAtVddMin = (byte)((response[8] & 0x38) >> 3);
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csd.ReadCurrentAtVddMax = (byte)(response[8] & 0x07);
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csd.WriteCurrentAtVddMin = (byte)((response[9] & 0xE0) >> 5);
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csd.WriteCurrentAtVddMax = (byte)((response[9] & 0x1C) >> 2);
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csd.SizeMultiplier = (byte)(((response[9] & 0x03) << 1) + ((response[10] & 0x80) >> 7));
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}
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else
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csd.Size = (uint)(((response[7] & 0x3F) << 16) + (response[8] << 8) + response[9]);
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csd.EraseBlockEnable = (response[10] & 0x40) == 0x40;
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csd.EraseSectorSize = (byte)(((response[10] & 0x3F) << 1) + ((response[11] & 0x80) >> 7));
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csd.WriteProtectGroupSize = ((byte)(response[11] & 0x7F));
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csd.WriteProtectGroupEnable = (response[12] & 0x80) == 0x80;
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csd.WriteSpeedFactor = (byte)((response[12] & 0x1C) >> 2);
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csd.WriteBlockLength = (byte)(((response[12] & 0x03) << 2) + ((response[13] & 0xC0) >> 6));
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csd.WritesPartialBlocks = (response[13] & 0x20) == 0x20;
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csd.FileFormatGroup = (response[14] & 0x80) == 0x80;
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csd.Copy = (response[14] & 0x40) == 0x40;
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csd.PermanentWriteProtect = (response[14] & 0x20) == 0x20;
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csd.TemporaryWriteProtect = (response[14] & 0x10) == 0x10;
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csd.FileFormat = (byte)((response[14] & 0x0C) >> 2);
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csd.CRC = (byte)((response[15] & 0xFE) >> 1);
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return csd;
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}
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public static string PrettifyCSD(CSD csd)
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{
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if(csd == null)
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return null;
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double unitFactor = 0;
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double multiplier = 0;
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double result = 0;
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string unit = "";
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StringBuilder sb = new StringBuilder();
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sb.AppendLine("SecureDigital Device Specific Data Register:");
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switch(csd.Structure)
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{
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case 0:
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sb.AppendLine("\tRegister version 1.0");
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break;
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case 1:
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sb.AppendLine("\tRegister version 2.0");
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break;
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}
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switch(csd.TAAC & 0x07)
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{
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case 0:
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unit = "ns";
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unitFactor = 1;
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break;
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case 1:
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unit = "ns";
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unitFactor = 10;
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break;
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case 2:
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unit = "ns";
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unitFactor = 100;
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break;
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case 3:
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unit = "μs";
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unitFactor = 1;
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break;
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case 4:
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unit = "μs";
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unitFactor = 10;
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break;
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case 5:
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unit = "μs";
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unitFactor = 100;
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break;
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case 6:
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unit = "ms";
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unitFactor = 1;
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break;
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case 7:
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unit = "ms";
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unitFactor = 10;
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break;
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}
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switch((csd.TAAC & 0x78) >> 3)
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{
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case 0:
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multiplier = 0;
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break;
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case 1:
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multiplier = 1;
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break;
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case 2:
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multiplier = 1.2;
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break;
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case 3:
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multiplier = 1.3;
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break;
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case 4:
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multiplier = 1.5;
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break;
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case 5:
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multiplier = 2;
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break;
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case 6:
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multiplier = 2.5;
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break;
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case 7:
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multiplier = 3;
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break;
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case 8:
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multiplier = 3.5;
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break;
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case 9:
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multiplier = 4;
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break;
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case 10:
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multiplier = 4.5;
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break;
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case 11:
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multiplier = 5;
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break;
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case 12:
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multiplier = 5.5;
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break;
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case 13:
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multiplier = 6;
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break;
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case 14:
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multiplier = 7;
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break;
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case 15:
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multiplier = 8;
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break;
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}
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result = unitFactor * multiplier;
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sb.AppendFormat("\tAsynchronous data access time is {0}{1}", result, unit).AppendLine();
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sb.AppendFormat("\tClock dependent part of data access is {0} clock cycles", csd.NSAC * 100).AppendLine();
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unit = "MBit/s";
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switch(csd.Speed & 0x07)
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{
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case 0:
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unitFactor = 0.1;
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break;
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case 1:
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unitFactor = 1;
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break;
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case 2:
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unitFactor = 10;
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break;
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case 3:
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unitFactor = 100;
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break;
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default:
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unit = "unknown";
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unitFactor = 0;
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break;
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}
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switch((csd.Speed & 0x78) >> 3)
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{
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case 0:
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multiplier = 0;
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break;
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case 1:
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multiplier = 1;
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break;
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case 2:
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multiplier = 1.2;
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break;
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case 3:
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multiplier = 1.3;
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break;
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case 4:
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multiplier = 1.5;
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break;
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case 5:
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multiplier = 2;
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break;
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case 6:
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multiplier = 2.6;
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break;
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case 7:
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multiplier = 3;
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break;
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case 8:
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multiplier = 3.5;
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break;
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case 9:
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multiplier = 4;
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break;
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case 10:
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multiplier = 4.5;
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break;
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case 11:
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multiplier = 5.2;
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break;
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case 12:
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multiplier = 5.5;
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break;
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case 13:
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multiplier = 6;
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break;
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case 14:
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multiplier = 7;
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break;
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case 15:
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multiplier = 8;
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break;
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}
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result = unitFactor * multiplier;
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sb.AppendFormat("\tDevice's transfer speed: {0}{1}", result, unit).AppendLine();
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unit = "";
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for(int cl = 0, mask = 1; cl <= 11; cl++, mask <<= 1)
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{
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if((csd.Classes & mask) == mask)
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unit += string.Format(" {0}", cl);
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}
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sb.AppendFormat("\tDevice support command classes {0}", unit).AppendLine();
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sb.AppendFormat("\tRead block length is {0} bytes", Math.Pow(2, csd.ReadBlockLength)).AppendLine();
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if(csd.ReadsPartialBlocks)
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sb.AppendLine("\tDevice allows reading partial blocks");
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if(csd.WriteMisalignment)
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sb.AppendLine("\tWrite commands can cross physical block boundaries");
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if(csd.ReadMisalignment)
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sb.AppendLine("\tRead commands can cross physical block boundaries");
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if(csd.DSRImplemented)
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sb.AppendLine("\tDevice implements configurable driver stage");
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if(csd.Structure == 0)
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{
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result = (csd.Size + 1) * Math.Pow(2, csd.SizeMultiplier + 2);
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sb.AppendFormat("\tDevice has {0} blocks", (int)result).AppendLine();
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result = (csd.Size + 1) * Math.Pow(2, csd.SizeMultiplier + 2) * Math.Pow(2, csd.ReadBlockLength);
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if(result > 1073741824)
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sb.AppendFormat("\tDevice has {0} GiB", result / 1073741824.0);
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else if(result > 1048576)
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sb.AppendFormat("\tDevice has {0} MiB", result / 1048576.0);
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else if(result > 1024)
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sb.AppendFormat("\tDevice has {0} KiB", result / 1024.0);
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else
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sb.AppendFormat("\tDevice has {0} bytes", result);
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}
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else
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{
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sb.AppendFormat("\tDevice has {0} blocks", (csd.Size + 1) * 1024);
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result = (csd.Size + 1) * 1024 * 512;
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if(result > 1099511627776)
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sb.AppendFormat("\tDevice has {0} TiB", result / 1099511627776.0);
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else if(result > 1073741824)
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sb.AppendFormat("\tDevice has {0} GiB", result / 1073741824.0);
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else if(result > 1048576)
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sb.AppendFormat("\tDevice has {0} MiB", result / 1048576.0);
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else if(result > 1024)
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sb.AppendFormat("\tDevice has {0} KiB", result / 1024.0);
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else
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sb.AppendFormat("\tDevice has {0} bytes", result);
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}
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if(csd.Structure == 0)
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{
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switch(csd.ReadCurrentAtVddMin & 0x07)
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{
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case 0:
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sb.AppendLine("\tDevice uses a maximum of 0.5mA for reading at minimum voltage");
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break;
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case 1:
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sb.AppendLine("\tDevice uses a maximum of 1mA for reading at minimum voltage");
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break;
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case 2:
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sb.AppendLine("\tDevice uses a maximum of 5mA for reading at minimum voltage");
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break;
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case 3:
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sb.AppendLine("\tDevice uses a maximum of 10mA for reading at minimum voltage");
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break;
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case 4:
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sb.AppendLine("\tDevice uses a maximum of 25mA for reading at minimum voltage");
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break;
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case 5:
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sb.AppendLine("\tDevice uses a maximum of 35mA for reading at minimum voltage");
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break;
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case 6:
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sb.AppendLine("\tDevice uses a maximum of 60mA for reading at minimum voltage");
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break;
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case 7:
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sb.AppendLine("\tDevice uses a maximum of 100mA for reading at minimum voltage");
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break;
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}
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switch(csd.ReadCurrentAtVddMax & 0x07)
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{
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case 0:
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sb.AppendLine("\tDevice uses a maximum of 1mA for reading at maximum voltage");
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break;
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case 1:
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sb.AppendLine("\tDevice uses a maximum of 5mA for reading at maximum voltage");
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break;
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case 2:
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sb.AppendLine("\tDevice uses a maximum of 10mA for reading at maximum voltage");
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break;
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case 3:
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sb.AppendLine("\tDevice uses a maximum of 25mA for reading at maximum voltage");
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break;
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case 4:
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sb.AppendLine("\tDevice uses a maximum of 35mA for reading at maximum voltage");
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break;
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case 5:
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sb.AppendLine("\tDevice uses a maximum of 45mA for reading at maximum voltage");
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break;
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case 6:
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sb.AppendLine("\tDevice uses a maximum of 80mA for reading at maximum voltage");
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break;
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case 7:
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sb.AppendLine("\tDevice uses a maximum of 200mA for reading at maximum voltage");
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break;
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}
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switch(csd.WriteCurrentAtVddMin & 0x07)
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{
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case 0:
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sb.AppendLine("\tDevice uses a maximum of 0.5mA for writing at minimum voltage");
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break;
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case 1:
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sb.AppendLine("\tDevice uses a maximum of 1mA for writing at minimum voltage");
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break;
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case 2:
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sb.AppendLine("\tDevice uses a maximum of 5mA for writing at minimum voltage");
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break;
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case 3:
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sb.AppendLine("\tDevice uses a maximum of 10mA for writing at minimum voltage");
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break;
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case 4:
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sb.AppendLine("\tDevice uses a maximum of 25mA for writing at minimum voltage");
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break;
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case 5:
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sb.AppendLine("\tDevice uses a maximum of 35mA for writing at minimum voltage");
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break;
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case 6:
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sb.AppendLine("\tDevice uses a maximum of 60mA for writing at minimum voltage");
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break;
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case 7:
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sb.AppendLine("\tDevice uses a maximum of 100mA for writing at minimum voltage");
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break;
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}
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switch(csd.WriteCurrentAtVddMax & 0x07)
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{
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case 0:
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sb.AppendLine("\tDevice uses a maximum of 1mA for writing at maximum voltage");
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break;
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case 1:
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sb.AppendLine("\tDevice uses a maximum of 5mA for writing at maximum voltage");
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break;
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case 2:
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sb.AppendLine("\tDevice uses a maximum of 10mA for writing at maximum voltage");
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break;
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case 3:
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sb.AppendLine("\tDevice uses a maximum of 25mA for writing at maximum voltage");
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break;
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case 4:
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sb.AppendLine("\tDevice uses a maximum of 35mA for writing at maximum voltage");
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break;
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case 5:
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sb.AppendLine("\tDevice uses a maximum of 45mA for writing at maximum voltage");
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break;
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case 6:
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sb.AppendLine("\tDevice uses a maximum of 80mA for writing at maximum voltage");
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break;
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case 7:
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sb.AppendLine("\tDevice uses a maximum of 200mA for writing at maximum voltage");
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break;
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}
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if(csd.EraseBlockEnable)
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sb.AppendLine("\tDevice can erase multiple blocks");
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// TODO: Check specification
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sb.AppendFormat("\tDevice must erase a minimum of {0} blocks at a time", Convert.ToUInt32(csd.EraseSectorSize) + 1).AppendLine();
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if(csd.WriteProtectGroupEnable)
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{
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sb.AppendLine("\tDevice can write protect regions");
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// TODO: Check specification
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unitFactor = Convert.ToDouble(csd.WriteProtectGroupSize);
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sb.AppendFormat("\tDevice can write protect a minimum of {0} blocks at a time", (int)(result + 1)).AppendLine();
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}
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else
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sb.AppendLine("\tDevice can't write protect regions");
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}
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sb.AppendFormat("\tWriting is {0} times slower than reading", Math.Pow(2, csd.WriteSpeedFactor)).AppendLine();
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sb.AppendFormat("\tWrite block length is {0} bytes", Math.Pow(2, csd.WriteBlockLength)).AppendLine();
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if(csd.WritesPartialBlocks)
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sb.AppendLine("\tDevice allows writing partial blocks");
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if(!csd.Copy)
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sb.AppendLine("\tDevice contents are original");
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if(csd.PermanentWriteProtect)
|
|
sb.AppendLine("\tDevice is permanently write protected");
|
|
|
|
if(csd.TemporaryWriteProtect)
|
|
sb.AppendLine("\tDevice is temporarily write protected");
|
|
|
|
if(!csd.FileFormatGroup)
|
|
{
|
|
switch(csd.FileFormat)
|
|
{
|
|
case 0:
|
|
sb.AppendLine("\tDevice is formatted like a hard disk");
|
|
break;
|
|
case 1:
|
|
sb.AppendLine("\tDevice is formatted like a floppy disk using Microsoft FAT");
|
|
break;
|
|
case 2:
|
|
sb.AppendLine("\tDevice uses Universal File Format");
|
|
break;
|
|
default:
|
|
sb.AppendFormat("\tDevice uses unknown file format code {0}", csd.FileFormat).AppendLine();
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
sb.AppendFormat("\tDevice uses unknown file format code {0} and file format group 1", csd.FileFormat).AppendLine();
|
|
|
|
sb.AppendFormat("\tCSD CRC: 0x{0:X2}", csd.CRC).AppendLine();
|
|
|
|
return sb.ToString();
|
|
}
|
|
|
|
public static string PrettifyCSD(uint[] response)
|
|
{
|
|
return PrettifyCSD(DecodeCSD(response));
|
|
}
|
|
|
|
public static string PrettifyCSD(byte[] response)
|
|
{
|
|
return PrettifyCSD(DecodeCSD(response));
|
|
}
|
|
}
|
|
}
|