Aaru/Aaru.Devices/Device/AtaCommands/Cfa.cs

// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename       : Cfa.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : ATA commands.
//
// --[ Description ] ----------------------------------------------------------
//
//     Contains Compact Flash Association commands.
//
// --[ License ] --------------------------------------------------------------
//
//     This library is free software; you can redistribute it and/or modify
//     it under the terms of the GNU Lesser General Public License as
//     published by the Free Software Foundation; either version 2.1 of the
//     License, or (at your option) any later version.
//
//     This library is distributed in the hope that it will be useful, but
//     WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//     Lesser General Public License for more details.
//
//     You should have received a copy of the GNU Lesser General Public
//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2021 Natalia Portillo
// ****************************************************************************/

using System;
using Aaru.Console;
using Aaru.Decoders.ATA;

namespace Aaru.Devices
{
    public sealed partial class Device
    {
        /// <summary>Requests to translate an LBA to a card physical address</summary>
        /// <param name="buffer">Data buffer</param>
        /// <param name="statusRegisters">Returned status registers</param>
        /// <param name="lba">LBA to start reading from</param>
        /// <param name="timeout">Timeout to wait for command execution</param>
        /// <param name="duration">Time the device took to execute the command in milliseconds</param>
        /// <returns><c>true</c> if the device set an error condition, <c>false</c> otherwise</returns>
        public bool TranslateSector(out byte[] buffer, out AtaErrorRegistersLba28 statusRegisters, uint lba,
                                    uint timeout, out double duration)
        {
            buffer = new byte[512];

            var registers = new AtaRegistersLba28
            {
                Command    = (byte)AtaCommands.TranslateSector,
                DeviceHead = (byte)((lba & 0xF000000) / 0x1000000),
                LbaHigh    = (byte)((lba & 0xFF0000)  / 0x10000),
                LbaMid     = (byte)((lba & 0xFF00)    / 0x100),
                LbaLow     = (byte)((lba & 0xFF)      / 0x1)
            };

            registers.DeviceHead += 0x40;

            LastError = SendAtaCommand(registers, out statusRegisters, AtaProtocol.PioIn,
                                       AtaTransferRegister.NoTransfer, ref buffer, timeout, false, out duration,
                                       out bool sense);

            Error = LastError != 0;

            AaruConsole.DebugWriteLine("ATA Device", "CFA TRANSLATE SECTOR took {0} ms.", duration);

            return sense;
        }

        /// <summary>Requests to translate a CHS to a card physical address</summary>
        /// <param name="buffer">Data buffer</param>
        /// <param name="statusRegisters">Returned status registers</param>
        /// <param name="cylinder">Cylinder</param>
        /// <param name="head">Head</param>
        /// <param name="sector">Sector</param>
        /// <param name="timeout">Timeout to wait for command execution</param>
        /// <param name="duration">Time the device took to execute the command in milliseconds</param>
        /// <returns><c>true</c> if the device set an error condition, <c>false</c> otherwise</returns>
        public bool TranslateSector(out byte[] buffer, out AtaErrorRegistersChs statusRegisters, ushort cylinder,
                                    byte head, byte sector, uint timeout, out double duration)
        {
            buffer = new byte[512];

            var registers = new AtaRegistersChs
            {
                Command      = (byte)AtaCommands.TranslateSector,
                CylinderHigh = (byte)((cylinder & 0xFF00) / 0x100),
                CylinderLow  = (byte)((cylinder & 0xFF)   / 0x1),
                Sector       = sector,
                DeviceHead   = (byte)(head & 0x0F)
            };

            LastError = SendAtaCommand(registers, out statusRegisters, AtaProtocol.PioIn,
                                       AtaTransferRegister.NoTransfer, ref buffer, timeout, false, out duration,
                                       out bool sense);

            Error = LastError != 0;

            AaruConsole.DebugWriteLine("ATA Device", "CFA TRANSLATE SECTOR took {0} ms.", duration);

            return sense;
        }

        /// <summary>Requests an extended error code</summary>
        /// <param name="errorCode">Error code</param>
        /// <param name="statusRegisters">Returned status registers</param>
        /// <param name="timeout">Timeout to wait for command execution</param>
        /// <param name="duration">Time the device took to execute the command in milliseconds</param>
        /// <returns><c>true</c> if the device set an error condition, <c>false</c> otherwise</returns>
        public bool RequestExtendedErrorCode(out byte errorCode, out AtaErrorRegistersLba28 statusRegisters,
                                             uint timeout, out double duration)
        {
            byte[] buffer = Array.Empty<byte>();

            var registers = new AtaRegistersLba28
            {
                Command = (byte)AtaCommands.RequestSense
            };

            LastError = SendAtaCommand(registers, out statusRegisters, AtaProtocol.PioIn,
                                       AtaTransferRegister.NoTransfer, ref buffer, timeout, false, out duration,
                                       out bool sense);

            Error = LastError != 0;

            errorCode = statusRegisters.Error;

            AaruConsole.DebugWriteLine("ATA Device", "CFA REQUEST EXTENDED ERROR CODE took {0} ms.", duration);

            return sense;
        }
    }
}