mirror of
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561 lines
26 KiB
C#
561 lines
26 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : ReaderSCSI.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Core algorithms.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Contains common code for reading SCSI devices.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2018 Natalia Portillo
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// ****************************************************************************/
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using System;
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using DiscImageChef.Console;
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namespace DiscImageChef.Core.Devices
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{
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partial class Reader
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{
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// TODO: Raw reading
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bool read6;
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bool read10;
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bool read12;
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bool read16;
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bool readLong10;
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bool readLong16;
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bool hldtstReadRaw;
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bool readLongDvd;
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bool plextorReadRaw;
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bool syqReadLong6;
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bool syqReadLong10;
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bool seek6;
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bool seek10;
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ulong ScsiGetBlocks()
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{
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return ScsiGetBlockSize() ? 0 : blocks;
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}
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bool ScsiFindReadCommand()
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{
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byte[] readBuffer;
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byte[] senseBuf;
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double duration;
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read6 = !dev.Read6(out readBuffer, out senseBuf, 0, blockSize, timeout, out duration);
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read10 = !dev.Read10(out readBuffer, out senseBuf, 0, false, true, false, false, 0, blockSize, 0, 1,
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timeout, out duration);
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read12 = !dev.Read12(out readBuffer, out senseBuf, 0, false, true, false, false, 0, blockSize, 0, 1, false,
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timeout, out duration);
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read16 = !dev.Read16(out readBuffer, out senseBuf, 0, false, true, false, 0, blockSize, 0, 1, false,
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timeout, out duration);
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seek6 = !dev.Seek6(out senseBuf, 0, timeout, out duration);
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seek10 = !dev.Seek10(out senseBuf, 0, timeout, out duration);
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if(!read6 && !read10 && !read12 && !read16)
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{
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errorMessage = "Cannot read medium, aborting scan...";
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return true;
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}
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if(read6 && !read10 && !read12 && !read16 && blocks > (0x001FFFFF + 1))
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{
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errorMessage =
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string.Format("Device only supports SCSI READ (6) but has more than {0} blocks ({1} blocks total)",
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0x001FFFFF + 1, blocks);
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return true;
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}
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#pragma warning disable IDE0004 // Remove Unnecessary Cast
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if(!read16 && blocks > ((long)0xFFFFFFFF + (long)1))
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#pragma warning restore IDE0004 // Remove Unnecessary Cast
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{
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#pragma warning disable IDE0004 // Remove Unnecessary Cast
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errorMessage =
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string.Format("Device only supports SCSI READ (10) but has more than {0} blocks ({1} blocks total)",
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(long)0xFFFFFFFF + (long)1, blocks);
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#pragma warning restore IDE0004 // Remove Unnecessary Cast
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return true;
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}
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if(readRaw)
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{
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bool testSense;
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Decoders.SCSI.FixedSense? decSense;
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readRaw = false;
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if(dev.ScsiType != Decoders.SCSI.PeripheralDeviceTypes.MultiMediaDevice)
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{
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/*testSense = dev.ReadLong16(out readBuffer, out senseBuf, false, 0, 0xFFFF, timeout, out duration);
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if (testSense && !dev.Error)
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{
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decSense = Decoders.SCSI.Sense.DecodeFixed(senseBuf);
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if (decSense.HasValue)
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{
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if (decSense.Value.SenseKey == DiscImageChef.Decoders.SCSI.SenseKeys.IllegalRequest &&
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decSense.Value.ASC == 0x24 && decSense.Value.ASCQ == 0x00)
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{
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readRaw = true;
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if (decSense.Value.InformationValid && decSense.Value.ILI)
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{
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longBlockSize = 0xFFFF - (decSense.Value.Information & 0xFFFF);
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readLong16 = !dev.ReadLong16(out readBuffer, out senseBuf, false, 0, longBlockSize, timeout, out duration);
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}
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}
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}
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}*/
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testSense = dev.ReadLong10(out readBuffer, out senseBuf, false, false, 0, 0xFFFF, timeout,
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out duration);
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if(testSense && !dev.Error)
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{
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decSense = Decoders.SCSI.Sense.DecodeFixed(senseBuf);
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if(decSense.HasValue)
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{
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if(decSense.Value.SenseKey == Decoders.SCSI.SenseKeys.IllegalRequest &&
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decSense.Value.ASC == 0x24 && decSense.Value.ASCQ == 0x00)
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{
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readRaw = true;
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if(decSense.Value.InformationValid && decSense.Value.ILI)
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{
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longBlockSize = 0xFFFF - (decSense.Value.Information & 0xFFFF);
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readLong10 = !dev.ReadLong10(out readBuffer, out senseBuf, false, false, 0,
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(ushort)longBlockSize, timeout, out duration);
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}
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}
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}
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}
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if(readRaw && longBlockSize == blockSize)
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{
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if(blockSize == 512)
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{
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foreach(ushort testSize in new[]
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{
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// Long sector sizes for floppies
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514,
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// Long sector sizes for SuperDisk
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536, 558,
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// Long sector sizes for 512-byte magneto-opticals
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600, 610, 630
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})
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{
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testSense = dev.ReadLong16(out readBuffer, out senseBuf, false, 0, testSize, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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readLong16 = true;
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longBlockSize = testSize;
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readRaw = true;
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break;
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}
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testSense = dev.ReadLong10(out readBuffer, out senseBuf, false, false, 0, testSize,
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timeout, out duration);
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if(!testSense && !dev.Error)
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{
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readLong10 = true;
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longBlockSize = testSize;
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readRaw = true;
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break;
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}
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}
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}
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else if(blockSize == 1024)
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{
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foreach(ushort testSize in new[]
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{
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// Long sector sizes for floppies
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1026,
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// Long sector sizes for 1024-byte magneto-opticals
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1200
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})
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{
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testSense = dev.ReadLong16(out readBuffer, out senseBuf, false, 0, testSize, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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readLong16 = true;
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longBlockSize = testSize;
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readRaw = true;
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break;
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}
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testSense = dev.ReadLong10(out readBuffer, out senseBuf, false, false, 0, testSize,
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timeout, out duration);
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if(!testSense && !dev.Error)
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{
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readLong10 = true;
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longBlockSize = testSize;
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readRaw = true;
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break;
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}
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}
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}
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else if(blockSize == 2048)
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{
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testSense = dev.ReadLong16(out readBuffer, out senseBuf, false, 0, 2380, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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readLong16 = true;
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longBlockSize = 2380;
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readRaw = true;
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}
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else
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{
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testSense = dev.ReadLong10(out readBuffer, out senseBuf, false, false, 0, 2380, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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readLong10 = true;
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longBlockSize = 2380;
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readRaw = true;
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}
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}
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}
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else if(blockSize == 4096)
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{
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testSense = dev.ReadLong16(out readBuffer, out senseBuf, false, 0, 4760, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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readLong16 = true;
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longBlockSize = 4760;
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readRaw = true;
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}
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else
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{
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testSense = dev.ReadLong10(out readBuffer, out senseBuf, false, false, 0, 4760, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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readLong10 = true;
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longBlockSize = 4760;
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readRaw = true;
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}
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}
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}
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else if(blockSize == 8192)
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{
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testSense = dev.ReadLong16(out readBuffer, out senseBuf, false, 0, 9424, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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readLong16 = true;
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longBlockSize = 9424;
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readRaw = true;
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}
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else
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{
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testSense = dev.ReadLong10(out readBuffer, out senseBuf, false, false, 0, 9424, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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readLong10 = true;
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longBlockSize = 9424;
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readRaw = true;
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}
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}
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}
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}
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if(!readRaw && dev.Manufacturer == "SYQUEST")
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{
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testSense = dev.SyQuestReadLong10(out readBuffer, out senseBuf, 0, 0xFFFF, timeout,
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out duration);
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if(testSense)
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{
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decSense = Decoders.SCSI.Sense.DecodeFixed(senseBuf);
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if(decSense.HasValue)
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{
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if(decSense.Value.SenseKey == Decoders.SCSI.SenseKeys.IllegalRequest &&
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decSense.Value.ASC == 0x24 && decSense.Value.ASCQ == 0x00)
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{
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readRaw = true;
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if(decSense.Value.InformationValid && decSense.Value.ILI)
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{
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longBlockSize = 0xFFFF - (decSense.Value.Information & 0xFFFF);
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syqReadLong10 =
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!dev.SyQuestReadLong10(out readBuffer, out senseBuf, 0, longBlockSize,
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timeout, out duration);
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}
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}
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else
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{
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testSense = dev.SyQuestReadLong6(out readBuffer, out senseBuf, 0, 0xFFFF, timeout,
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out duration);
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if(testSense)
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{
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decSense = Decoders.SCSI.Sense.DecodeFixed(senseBuf);
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if(decSense.HasValue)
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{
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if(decSense.Value.SenseKey == Decoders.SCSI.SenseKeys.IllegalRequest &&
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decSense.Value.ASC == 0x24 && decSense.Value.ASCQ == 0x00)
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{
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readRaw = true;
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if(decSense.Value.InformationValid && decSense.Value.ILI)
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{
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longBlockSize = 0xFFFF - (decSense.Value.Information & 0xFFFF);
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syqReadLong6 =
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!dev.SyQuestReadLong6(out readBuffer, out senseBuf, 0,
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longBlockSize, timeout, out duration);
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}
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}
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}
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}
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}
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}
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}
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if(!readRaw && blockSize == 256)
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{
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testSense = dev.SyQuestReadLong6(out readBuffer, out senseBuf, 0, 262, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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syqReadLong6 = true;
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longBlockSize = 262;
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readRaw = true;
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}
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}
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}
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}
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else
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{
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if(dev.Manufacturer == "HL-DT-ST")
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hldtstReadRaw =
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!dev.HlDtStReadRawDvd(out readBuffer, out senseBuf, 0, 1, timeout, out duration);
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if(dev.Manufacturer == "PLEXTOR")
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plextorReadRaw =
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!dev.PlextorReadRawDvd(out readBuffer, out senseBuf, 0, 1, timeout, out duration);
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if(hldtstReadRaw || plextorReadRaw)
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{
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readRaw = true;
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longBlockSize = 2064;
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}
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// READ LONG (10) for some DVD drives
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if(!readRaw && dev.Manufacturer == "MATSHITA")
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{
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testSense = dev.ReadLong10(out readBuffer, out senseBuf, false, false, 0, 37856, timeout,
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out duration);
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if(!testSense && !dev.Error)
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{
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readLongDvd = true;
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longBlockSize = 37856;
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readRaw = true;
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}
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}
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}
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}
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if(readRaw)
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{
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if(readLong16) DicConsole.WriteLine("Using SCSI READ LONG (16) command.");
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else if(readLong10 || readLongDvd) DicConsole.WriteLine("Using SCSI READ LONG (10) command.");
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else if(syqReadLong10) DicConsole.WriteLine("Using SyQuest READ LONG (10) command.");
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else if(syqReadLong6) DicConsole.WriteLine("Using SyQuest READ LONG (6) command.");
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else if(hldtstReadRaw) DicConsole.WriteLine("Using HL-DT-ST raw DVD reading.");
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else if(plextorReadRaw) DicConsole.WriteLine("Using Plextor raw DVD reading.");
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}
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else if(read16) DicConsole.WriteLine("Using SCSI READ (16) command.");
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else if(read12) DicConsole.WriteLine("Using SCSI READ (12) command.");
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else if(read10) DicConsole.WriteLine("Using SCSI READ (10) command.");
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else if(read6) DicConsole.WriteLine("Using SCSI READ (6) command.");
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return false;
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}
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bool ScsiGetBlockSize()
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{
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bool sense;
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byte[] cmdBuf;
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byte[] senseBuf;
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double duration;
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blocks = 0;
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sense = dev.ReadCapacity(out cmdBuf, out senseBuf, timeout, out duration);
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if(!sense)
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{
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blocks = (ulong)((cmdBuf[0] << 24) + (cmdBuf[1] << 16) + (cmdBuf[2] << 8) + (cmdBuf[3]));
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blockSize = (uint)((cmdBuf[5] << 24) + (cmdBuf[5] << 16) + (cmdBuf[6] << 8) + (cmdBuf[7]));
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}
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if(sense || blocks == 0xFFFFFFFF)
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{
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sense = dev.ReadCapacity16(out cmdBuf, out senseBuf, timeout, out duration);
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if(sense && blocks == 0)
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{
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// Not all MMC devices support READ CAPACITY, as they have READ TOC
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if(dev.ScsiType != Decoders.SCSI.PeripheralDeviceTypes.MultiMediaDevice)
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{
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errorMessage = string.Format("Unable to get media capacity\n" + "{0}",
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Decoders.SCSI.Sense.PrettifySense(senseBuf));
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return true;
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}
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}
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if(!sense)
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{
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byte[] temp = new byte[8];
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Array.Copy(cmdBuf, 0, temp, 0, 8);
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Array.Reverse(temp);
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blocks = BitConverter.ToUInt64(temp, 0);
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blockSize = (uint)((cmdBuf[5] << 24) + (cmdBuf[5] << 16) + (cmdBuf[6] << 8) + (cmdBuf[7]));
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}
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}
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physicalsectorsize = blockSize;
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longBlockSize = blockSize;
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return false;
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}
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bool ScsiGetBlocksToRead(uint startWithBlocks)
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{
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bool sense;
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byte[] readBuffer;
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byte[] senseBuf;
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double duration;
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blocksToRead = startWithBlocks;
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while(true)
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{
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if(read16)
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{
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sense = dev.Read16(out readBuffer, out senseBuf, 0, false, true, false, 0, blockSize, 0,
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blocksToRead, false, timeout, out duration);
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if(dev.Error) blocksToRead /= 2;
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}
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else if(read12)
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{
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sense = dev.Read12(out readBuffer, out senseBuf, 0, false, false, false, false, 0, blockSize, 0,
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blocksToRead, false, timeout, out duration);
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if(dev.Error) blocksToRead /= 2;
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}
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else if(read10)
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{
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sense = dev.Read10(out readBuffer, out senseBuf, 0, false, true, false, false, 0, blockSize, 0,
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(ushort)blocksToRead, timeout, out duration);
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if(dev.Error) blocksToRead /= 2;
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}
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else if(read6)
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{
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sense = dev.Read6(out readBuffer, out senseBuf, 0, blockSize, (byte)blocksToRead, timeout,
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out duration);
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if(dev.Error) blocksToRead /= 2;
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}
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if(!dev.Error || blocksToRead == 1) break;
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}
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if(dev.Error)
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{
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blocksToRead = 1;
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errorMessage = string.Format("Device error {0} trying to guess ideal transfer length.", dev.LastError);
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return true;
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}
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return false;
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}
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bool ScsiReadBlocks(out byte[] buffer, ulong block, uint count, out double duration)
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{
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bool sense = false;
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byte[] senseBuf = null;
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buffer = null;
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duration = 0;
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if(readRaw)
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{
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if(readLong16)
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sense = dev.ReadLong16(out buffer, out senseBuf, false, block, longBlockSize, timeout,
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out duration);
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else if(readLong10)
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sense = dev.ReadLong10(out buffer, out senseBuf, false, false, (uint)block, (ushort)longBlockSize,
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timeout, out duration);
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else if(syqReadLong10)
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sense = dev.SyQuestReadLong10(out buffer, out senseBuf, (uint)block, longBlockSize, timeout,
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out duration);
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else if(syqReadLong6)
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sense = dev.SyQuestReadLong6(out buffer, out senseBuf, (uint)block, longBlockSize, timeout,
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out duration);
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else if(hldtstReadRaw)
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sense = dev.HlDtStReadRawDvd(out buffer, out senseBuf, (uint)block, longBlockSize, timeout,
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out duration);
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else if(plextorReadRaw)
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sense = dev.PlextorReadRawDvd(out buffer, out senseBuf, (uint)block, longBlockSize, timeout,
|
|
out duration);
|
|
else return true;
|
|
}
|
|
else
|
|
{
|
|
if(read16)
|
|
sense = dev.Read16(out buffer, out senseBuf, 0, false, true, false, block, blockSize, 0, count,
|
|
false, timeout, out duration);
|
|
else if(read12)
|
|
sense = dev.Read12(out buffer, out senseBuf, 0, false, false, false, false, (uint)block, blockSize,
|
|
0, count, false, timeout, out duration);
|
|
else if(read10)
|
|
sense = dev.Read10(out buffer, out senseBuf, 0, false, true, false, false, (uint)block, blockSize,
|
|
0, (ushort)count, timeout, out duration);
|
|
else if(read6)
|
|
sense = dev.Read6(out buffer, out senseBuf, (uint)block, blockSize, (byte)count, timeout,
|
|
out duration);
|
|
else return true;
|
|
}
|
|
|
|
if(sense || dev.Error)
|
|
{
|
|
DicConsole.DebugWriteLine("SCSI Reader", "READ error:\n{0}",
|
|
Decoders.SCSI.Sense.PrettifySense(senseBuf));
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ScsiSeek(ulong block, out double duration)
|
|
{
|
|
byte[] senseBuf;
|
|
bool sense = true;
|
|
duration = 0;
|
|
|
|
if(seek6) sense = dev.Seek6(out senseBuf, (uint)block, timeout, out duration);
|
|
else if(seek10) sense = dev.Seek10(out senseBuf, (uint)block, timeout, out duration);
|
|
|
|
return sense;
|
|
}
|
|
}
|
|
} |