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435
Aaru.Core/Devices/ReaderATA.cs
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435
Aaru.Core/Devices/ReaderATA.cs
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@@ -0,0 +1,435 @@
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// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : ReaderATA.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 ATA 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 © 2011-2020 Natalia Portillo
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// ****************************************************************************/
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using System;
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using DiscImageChef.CommonTypes.Enums;
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using DiscImageChef.Console;
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using DiscImageChef.Decoders.ATA;
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using Identify = DiscImageChef.CommonTypes.Structs.Devices.ATA.Identify;
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namespace DiscImageChef.Core.Devices
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{
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internal partial class Reader
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{
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Identify.IdentifyDevice ataId;
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bool ataRead;
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bool ataReadDma;
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bool ataReadDmaLba;
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bool ataReadDmaLba48;
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bool ataReadDmaRetry;
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bool ataReadDmaRetryLba;
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bool ataReadLba;
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bool ataReadLba48;
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bool ataReadRetry;
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bool ataReadRetryLba;
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bool ataSeek;
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bool ataSeekLba;
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internal bool IsLba { get; private set; }
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internal ushort Cylinders { get; private set; }
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internal byte Heads { get; private set; }
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internal byte Sectors { get; private set; }
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(uint, byte, byte) GetDeviceChs()
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{
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if(dev.Type != DeviceType.ATA)
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return(0, 0, 0);
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if(ataId.CurrentCylinders > 0 &&
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ataId.CurrentHeads > 0 &&
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ataId.CurrentSectorsPerTrack > 0)
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{
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Cylinders = ataId.CurrentCylinders;
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Heads = (byte)ataId.CurrentHeads;
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Sectors = (byte)ataId.CurrentSectorsPerTrack;
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Blocks = (ulong)(Cylinders * Heads * Sectors);
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}
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if((ataId.CurrentCylinders != 0 && ataId.CurrentHeads != 0 && ataId.CurrentSectorsPerTrack != 0) ||
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ataId.Cylinders <= 0 ||
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ataId.Heads <= 0 ||
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ataId.SectorsPerTrack <= 0)
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return(Cylinders, Heads, Sectors);
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Cylinders = ataId.Cylinders;
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Heads = (byte)ataId.Heads;
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Sectors = (byte)ataId.SectorsPerTrack;
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Blocks = (ulong)(Cylinders * Heads * Sectors);
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return(Cylinders, Heads, Sectors);
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}
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ulong AtaGetBlocks()
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{
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GetDeviceChs();
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if(ataId.Capabilities.HasFlag(Identify.CapabilitiesBit.LBASupport))
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{
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Blocks = ataId.LBASectors;
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IsLba = true;
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}
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if(!ataId.CommandSet2.HasFlag(Identify.CommandSetBit2.LBA48))
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return Blocks;
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Blocks = ataId.LBA48Sectors;
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IsLba = true;
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return Blocks;
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}
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bool AtaFindReadCommand()
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{
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bool sense = dev.Read(out byte[] cmdBuf, out AtaErrorRegistersChs errorChs, false, 0, 0, 1, 1, timeout,
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out _);
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ataRead = !sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0 && cmdBuf.Length > 0;
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sense = dev.Read(out cmdBuf, out errorChs, true, 0, 0, 1, 1, timeout, out _);
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ataReadRetry = !sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0 && cmdBuf.Length > 0;
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sense = dev.ReadDma(out cmdBuf, out errorChs, false, 0, 0, 1, 1, timeout, out _);
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ataReadDma = !sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0 && cmdBuf.Length > 0;
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sense = dev.ReadDma(out cmdBuf, out errorChs, true, 0, 0, 1, 1, timeout, out _);
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ataReadDmaRetry = !sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0 && cmdBuf.Length > 0;
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sense = dev.Read(out cmdBuf, out AtaErrorRegistersLba28 errorLba, false, 0, 1, timeout, out _);
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ataReadLba = !sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && cmdBuf.Length > 0;
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sense = dev.Read(out cmdBuf, out errorLba, true, 0, 1, timeout, out _);
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ataReadRetryLba = !sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && cmdBuf.Length > 0;
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sense = dev.ReadDma(out cmdBuf, out errorLba, false, 0, 1, timeout, out _);
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ataReadDmaLba = !sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && cmdBuf.Length > 0;
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sense = dev.ReadDma(out cmdBuf, out errorLba, true, 0, 1, timeout, out _);
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ataReadDmaRetryLba = !sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && cmdBuf.Length > 0;
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sense = dev.Read(out cmdBuf, out AtaErrorRegistersLba48 errorLba48, 0, 1, timeout, out _);
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ataReadLba48 = !sense && (errorLba48.Status & 0x27) == 0 && errorLba48.Error == 0 && cmdBuf.Length > 0;
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sense = dev.ReadDma(out cmdBuf, out errorLba48, 0, 1, timeout, out _);
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ataReadDmaLba48 = !sense && (errorLba48.Status & 0x27) == 0 && errorLba48.Error == 0 && cmdBuf.Length > 0;
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sense = dev.Seek(out errorChs, 0, 0, 1, timeout, out _);
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ataSeek = !sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0;
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sense = dev.Seek(out errorLba, 0, timeout, out _);
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ataSeekLba = !sense && (errorLba.Status & 0x27) == 0 && errorChs.Error == 0;
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if(IsLba)
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{
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if(Blocks > 0xFFFFFFF &&
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!ataReadLba48 &&
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!ataReadDmaLba48)
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{
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ErrorMessage = "Device needs 48-bit LBA commands but I can't issue them... Aborting.";
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return true;
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}
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if(!ataReadLba &&
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!ataReadRetryLba &&
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!ataReadDmaLba &&
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!ataReadDmaRetryLba)
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{
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ErrorMessage = "Device needs 28-bit LBA commands but I can't issue them... Aborting.";
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return true;
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}
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}
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else
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{
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if(!ataRead &&
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!ataReadRetry &&
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!ataReadDma &&
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!ataReadDmaRetry)
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{
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ErrorMessage = "Device needs CHS commands but I can't issue them... Aborting.";
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return true;
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}
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}
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if(ataReadDmaLba48)
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DicConsole.WriteLine("Using ATA READ DMA EXT command.");
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else if(ataReadLba48)
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DicConsole.WriteLine("Using ATA READ EXT command.");
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else if(ataReadDmaRetryLba)
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DicConsole.WriteLine("Using ATA READ DMA command with retries (LBA).");
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else if(ataReadDmaLba)
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DicConsole.WriteLine("Using ATA READ DMA command (LBA).");
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else if(ataReadRetryLba)
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DicConsole.WriteLine("Using ATA READ command with retries (LBA).");
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else if(ataReadLba)
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DicConsole.WriteLine("Using ATA READ command (LBA).");
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else if(ataReadDmaRetry)
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DicConsole.WriteLine("Using ATA READ DMA command with retries (CHS).");
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else if(ataReadDma)
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DicConsole.WriteLine("Using ATA READ DMA command (CHS).");
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else if(ataReadRetry)
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DicConsole.WriteLine("Using ATA READ command with retries (CHS).");
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else if(ataRead)
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DicConsole.WriteLine("Using ATA READ command (CHS).");
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else
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{
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ErrorMessage = "Could not get a working read command!";
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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 AtaGetBlockSize()
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{
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if((ataId.PhysLogSectorSize & 0x8000) == 0x0000 &&
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(ataId.PhysLogSectorSize & 0x4000) == 0x4000)
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{
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if((ataId.PhysLogSectorSize & 0x1000) == 0x1000)
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if(ataId.LogicalSectorWords <= 255 ||
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ataId.LogicalAlignment == 0xFFFF)
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LogicalBlockSize = 512;
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else
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LogicalBlockSize = ataId.LogicalSectorWords * 2;
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else
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LogicalBlockSize = 512;
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if((ataId.PhysLogSectorSize & 0x2000) == 0x2000)
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PhysicalBlockSize = LogicalBlockSize * (uint)Math.Pow(2, ataId.PhysLogSectorSize & 0xF);
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else
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PhysicalBlockSize = LogicalBlockSize;
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}
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else
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{
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LogicalBlockSize = 512;
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PhysicalBlockSize = 512;
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}
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// TODO: ATA READ LONG
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LongBlockSize = 0;
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return false;
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}
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bool AtaGetBlocksToRead(uint startWithBlocks)
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{
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BlocksToRead = startWithBlocks;
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if(!IsLba)
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{
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BlocksToRead = 1;
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return false;
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}
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bool error = true;
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while(IsLba)
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{
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byte[] cmdBuf;
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bool sense;
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AtaErrorRegistersLba48 errorLba48;
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if(ataReadDmaLba48)
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{
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sense = dev.ReadDma(out cmdBuf, out errorLba48, 0, (byte)BlocksToRead, timeout, out _);
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error = !(!sense && (errorLba48.Status & 0x27) == 0 && errorLba48.Error == 0 && cmdBuf.Length > 0);
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}
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else if(ataReadLba48)
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{
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sense = dev.Read(out cmdBuf, out errorLba48, 0, (byte)BlocksToRead, timeout, out _);
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error = !(!sense && (errorLba48.Status & 0x27) == 0 && errorLba48.Error == 0 && cmdBuf.Length > 0);
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}
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else
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{
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AtaErrorRegistersLba28 errorLba;
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if(ataReadDmaRetryLba)
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{
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sense = dev.ReadDma(out cmdBuf, out errorLba, true, 0, (byte)BlocksToRead, timeout, out _);
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error = !(!sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && cmdBuf.Length > 0);
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}
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else if(ataReadDmaLba)
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{
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sense = dev.ReadDma(out cmdBuf, out errorLba, false, 0, (byte)BlocksToRead, timeout, out _);
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error = !(!sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && cmdBuf.Length > 0);
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}
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else if(ataReadRetryLba)
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{
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sense = dev.Read(out cmdBuf, out errorLba, true, 0, (byte)BlocksToRead, timeout, out _);
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error = !(!sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && cmdBuf.Length > 0);
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}
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else if(ataReadLba)
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{
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sense = dev.Read(out cmdBuf, out errorLba, false, 0, (byte)BlocksToRead, timeout, out _);
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error = !(!sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && cmdBuf.Length > 0);
|
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}
|
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}
|
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|
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if(error)
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BlocksToRead /= 2;
|
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|
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if(!error ||
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BlocksToRead == 1)
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break;
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}
|
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if(!error ||
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!IsLba)
|
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return false;
|
||||
|
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BlocksToRead = 1;
|
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ErrorMessage = $"Device error {dev.LastError} trying to guess ideal transfer length.";
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|
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return true;
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}
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|
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bool AtaReadBlocks(out byte[] buffer, ulong block, uint count, out double duration)
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{
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bool error = true;
|
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bool sense;
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AtaErrorRegistersLba28 errorLba;
|
||||
AtaErrorRegistersLba48 errorLba48;
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byte status = 0, errorByte = 0;
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buffer = null;
|
||||
duration = 0;
|
||||
|
||||
if(ataReadDmaLba48)
|
||||
{
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||||
sense = dev.ReadDma(out buffer, out errorLba48, block, (byte)count, timeout, out duration);
|
||||
error = !(!sense && (errorLba48.Status & 0x27) == 0 && errorLba48.Error == 0 && buffer.Length > 0);
|
||||
status = errorLba48.Status;
|
||||
errorByte = errorLba48.Error;
|
||||
}
|
||||
else if(ataReadLba48)
|
||||
{
|
||||
sense = dev.Read(out buffer, out errorLba48, block, (byte)count, timeout, out duration);
|
||||
error = !(!sense && (errorLba48.Status & 0x27) == 0 && errorLba48.Error == 0 && buffer.Length > 0);
|
||||
status = errorLba48.Status;
|
||||
errorByte = errorLba48.Error;
|
||||
}
|
||||
else if(ataReadDmaRetryLba)
|
||||
{
|
||||
sense = dev.ReadDma(out buffer, out errorLba, true, (uint)block, (byte)count, timeout,
|
||||
out duration);
|
||||
|
||||
error = !(!sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && buffer.Length > 0);
|
||||
status = errorLba.Status;
|
||||
errorByte = errorLba.Error;
|
||||
}
|
||||
else if(ataReadDmaLba)
|
||||
{
|
||||
sense = dev.ReadDma(out buffer, out errorLba, false, (uint)block, (byte)count, timeout,
|
||||
out duration);
|
||||
|
||||
error = !(!sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && buffer.Length > 0);
|
||||
status = errorLba.Status;
|
||||
errorByte = errorLba.Error;
|
||||
}
|
||||
else if(ataReadRetryLba)
|
||||
{
|
||||
sense = dev.Read(out buffer, out errorLba, true, (uint)block, (byte)count, timeout, out duration);
|
||||
error = !(!sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && buffer.Length > 0);
|
||||
status = errorLba.Status;
|
||||
errorByte = errorLba.Error;
|
||||
}
|
||||
else if(ataReadLba)
|
||||
{
|
||||
sense = dev.Read(out buffer, out errorLba, false, (uint)block, (byte)count, timeout, out duration);
|
||||
error = !(!sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0 && buffer.Length > 0);
|
||||
status = errorLba.Status;
|
||||
errorByte = errorLba.Error;
|
||||
}
|
||||
|
||||
if(error)
|
||||
DicConsole.DebugWriteLine("ATA Reader", "ATA ERROR: {0} STATUS: {1}", errorByte, status);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
bool AtaReadChs(out byte[] buffer, ushort cylinder, byte head, byte sectir, out double duration)
|
||||
{
|
||||
bool error = true;
|
||||
bool sense;
|
||||
AtaErrorRegistersChs errorChs;
|
||||
byte status = 0, errorByte = 0;
|
||||
buffer = null;
|
||||
duration = 0;
|
||||
|
||||
if(ataReadDmaRetry)
|
||||
{
|
||||
sense = dev.ReadDma(out buffer, out errorChs, true, cylinder, head, sectir, 1, timeout,
|
||||
out duration);
|
||||
|
||||
error = !(!sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0 && buffer.Length > 0);
|
||||
status = errorChs.Status;
|
||||
errorByte = errorChs.Error;
|
||||
}
|
||||
else if(ataReadDma)
|
||||
{
|
||||
sense = dev.ReadDma(out buffer, out errorChs, false, cylinder, head, sectir, 1, timeout,
|
||||
out duration);
|
||||
|
||||
error = !(!sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0 && buffer.Length > 0);
|
||||
status = errorChs.Status;
|
||||
errorByte = errorChs.Error;
|
||||
}
|
||||
else if(ataReadRetry)
|
||||
{
|
||||
sense = dev.Read(out buffer, out errorChs, true, cylinder, head, sectir, 1, timeout, out duration);
|
||||
error = !(!sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0 && buffer.Length > 0);
|
||||
status = errorChs.Status;
|
||||
errorByte = errorChs.Error;
|
||||
}
|
||||
else if(ataRead)
|
||||
{
|
||||
sense = dev.Read(out buffer, out errorChs, false, cylinder, head, sectir, 1, timeout, out duration);
|
||||
error = !(!sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0 && buffer.Length > 0);
|
||||
status = errorChs.Status;
|
||||
errorByte = errorChs.Error;
|
||||
}
|
||||
|
||||
if(error)
|
||||
DicConsole.DebugWriteLine("ATA Reader", "ATA ERROR: {0} STATUS: {1}", errorByte, status);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
bool AtaSeek(ulong block, out double duration)
|
||||
{
|
||||
bool sense = dev.Seek(out AtaErrorRegistersLba28 errorLba, (uint)block, timeout, out duration);
|
||||
|
||||
return!(!sense && (errorLba.Status & 0x27) == 0 && errorLba.Error == 0);
|
||||
}
|
||||
|
||||
bool AtaSeekChs(ushort cylinder, byte head, byte sector, out double duration)
|
||||
{
|
||||
bool sense = dev.Seek(out AtaErrorRegistersChs errorChs, cylinder, head, sector, timeout, out duration);
|
||||
|
||||
return!(!sense && (errorChs.Status & 0x27) == 0 && errorChs.Error == 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user