Hardware/LPC/LPCGroup.cs
author moel.mich
Fri, 29 Jan 2010 21:14:23 +0000
changeset 11 64b46a2cc8ae
parent 7 9523a3322777
child 13 d32fc5f2e822
permissions -rw-r--r--
Release version 0.1.3.1. Added a a bit more info to ADL reports.
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/*
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  Version: MPL 1.1/GPL 2.0/LGPL 2.1
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  The contents of this file are subject to the Mozilla Public License Version
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  1.1 (the "License"); you may not use this file except in compliance with
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  the License. You may obtain a copy of the License at
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  http://www.mozilla.org/MPL/
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  Software distributed under the License is distributed on an "AS IS" basis,
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  WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  for the specific language governing rights and limitations under the License.
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  The Original Code is the Open Hardware Monitor code.
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  The Initial Developer of the Original Code is 
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  Michael Möller <m.moeller@gmx.ch>.
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  Portions created by the Initial Developer are Copyright (C) 2009-2010
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  the Initial Developer. All Rights Reserved.
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  Contributor(s):
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  Alternatively, the contents of this file may be used under the terms of
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  either the GNU General Public License Version 2 or later (the "GPL"), or
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  the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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  in which case the provisions of the GPL or the LGPL are applicable instead
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  of those above. If you wish to allow use of your version of this file only
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  under the terms of either the GPL or the LGPL, and not to allow others to
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  use your version of this file under the terms of the MPL, indicate your
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  decision by deleting the provisions above and replace them with the notice
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  and other provisions required by the GPL or the LGPL. If you do not delete
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  the provisions above, a recipient may use your version of this file under
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  the terms of any one of the MPL, the GPL or the LGPL.
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*/
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Threading;
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namespace OpenHardwareMonitor.Hardware.LPC {
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  public class LPCGroup : IGroup {
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    private List<IHardware> hardware = new List<IHardware>();
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    private Chip chip = Chip.Unknown;
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    // I/O Ports
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    private ushort[] REGISTER_PORTS = new ushort[] { 0x2e, 0x4e };
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    private ushort[] VALUE_PORTS = new ushort[] { 0x2f, 0x4f };
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    private ushort registerPort;
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    private ushort valuePort;
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    // Registers
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    private const byte CONFIGURATION_CONTROL_REGISTER = 0x02;
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    private const byte DEVCIE_SELECT_REGISTER = 0x07;
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    private const byte CHIP_ID_REGISTER = 0x20;
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    private const byte CHIP_REVISION_REGISTER = 0x21;
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    private const byte BASE_ADDRESS_REGISTER = 0x60;
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    private byte ReadByte(byte register) {
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      WinRing0.WriteIoPortByte(registerPort, register);
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      return WinRing0.ReadIoPortByte(valuePort);
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    }
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    private ushort ReadWord(byte register) {
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      return (ushort)((ReadByte(register) << 8) | 
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        ReadByte((byte)(register + 1)));
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    }
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    private void Select(byte logicalDeviceNumber) {
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      WinRing0.WriteIoPortByte(registerPort, DEVCIE_SELECT_REGISTER);
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      WinRing0.WriteIoPortByte(valuePort, logicalDeviceNumber);
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    }
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    // IT87
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    private const ushort IT8716F_CHIP_ID = 0x8716;
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    private const ushort IT8718F_CHIP_ID = 0x8718;
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    private const ushort IT8720F_CHIP_ID = 0x8720;
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    private const ushort IT8726F_CHIP_ID = 0x8726;
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    private const byte IT87_ENVIRONMENT_CONTROLLER_LDN = 0x04;    
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    private void IT87Enter() {
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      WinRing0.WriteIoPortByte(registerPort, 0x87);
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      WinRing0.WriteIoPortByte(registerPort, 0x01);
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      WinRing0.WriteIoPortByte(registerPort, 0x55);
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      WinRing0.WriteIoPortByte(registerPort, 0x55);
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    }
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    internal void IT87Exit() {
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      WinRing0.WriteIoPortByte(registerPort, CONFIGURATION_CONTROL_REGISTER);
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      WinRing0.WriteIoPortByte(valuePort, 0x02);
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    }
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    // Winbond, Fintek
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    private const byte FINTEK_VENDOR_ID_REGISTER = 0x23;
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    private const ushort FINTEK_VENDOR_ID = 0x1934;
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    private const byte W83627DHG_HARDWARE_MONITOR_LDN = 0x0B;
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    private const byte F71882FG_HARDWARE_MONITOR_LDN = 0x04;
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    private void WinbondFintekEnter() {
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      WinRing0.WriteIoPortByte(registerPort, 0x87);
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      WinRing0.WriteIoPortByte(registerPort, 0x87);
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    }
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    private void WinbondFintekExit() {
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      WinRing0.WriteIoPortByte(registerPort, 0xAA);      
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    }
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    public LPCGroup() {
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      if (!WinRing0.IsAvailable)
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        return;
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      for (int i = 0; i < REGISTER_PORTS.Length; i++) {
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        registerPort = REGISTER_PORTS[i];
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        valuePort = VALUE_PORTS[i];
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        WinbondFintekEnter();
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        byte hardwareMonitorLDN;
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        byte id = ReadByte(CHIP_ID_REGISTER);
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        byte revision = ReadByte(CHIP_REVISION_REGISTER);
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        switch (id) {
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          case 0xA0:
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            switch (revision & 0xF0) {
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              case 0x20: 
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                chip = Chip.W83627DHG;
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                hardwareMonitorLDN = W83627DHG_HARDWARE_MONITOR_LDN;  
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                break;
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              default: 
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                chip = Chip.Unknown;
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                hardwareMonitorLDN = 0;
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                break;
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            } break;
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          case 0x05:
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            switch (revision) {
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              case 0x41: 
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                chip = Chip.F71882FG;
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                hardwareMonitorLDN = F71882FG_HARDWARE_MONITOR_LDN; 
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                break;
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              default: 
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                chip = Chip.Unknown; 
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                hardwareMonitorLDN = 0;
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                break;
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            } break;
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          default:
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            chip = Chip.Unknown; 
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            hardwareMonitorLDN = 0;
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            break;
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        }
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        if (chip != Chip.Unknown) {
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          Select(hardwareMonitorLDN);
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          ushort address = ReadWord(BASE_ADDRESS_REGISTER);
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          Thread.Sleep(1);
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          ushort verify = ReadWord(BASE_ADDRESS_REGISTER);
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          ushort vendorID = 0;
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          if (chip == Chip.F71882FG)
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            vendorID = ReadWord(FINTEK_VENDOR_ID_REGISTER);
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          WinbondFintekExit();
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          if (address != verify || address == 0 || (address & 0xF007) != 0)
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            return;
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          switch (chip) {
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            case Chip.W83627DHG:
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              W83627DHG w83627dhg = new W83627DHG(revision, address);
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              if (w83627dhg.IsAvailable)
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                hardware.Add(w83627dhg);
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              break;
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            case Chip.F71882FG:  
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              if (vendorID == FINTEK_VENDOR_ID)
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                hardware.Add(new F71882(address));
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              break;
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            default: break;
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          }
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          return;
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        }
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        IT87Enter();
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        switch (ReadWord(CHIP_ID_REGISTER)) {
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          case 0x8716: chip = Chip.IT8716F; break;
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          case 0x8718: chip = Chip.IT8718F; break;
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          case 0x8720: chip = Chip.IT8720F; break;
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          case 0x8726: chip = Chip.IT8726F; break;
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          default: chip = Chip.Unknown; break;
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        }
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        if (chip != Chip.Unknown) {
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          Select(IT87_ENVIRONMENT_CONTROLLER_LDN);
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          ushort address = ReadWord(BASE_ADDRESS_REGISTER);
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          Thread.Sleep(1);
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          ushort verify = ReadWord(BASE_ADDRESS_REGISTER);
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          IT87Exit();
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          if (address != verify || address == 0 || (address & 0xF007) != 0)
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            return;
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          IT87 it87 = new IT87(chip, address);
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          if (it87.IsAvailable)
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            hardware.Add(it87);
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          return;
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        }
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      }   
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    }
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    public IHardware[] Hardware {
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      get {
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        return hardware.ToArray();
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      }
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    }
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    public string GetReport() {
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      return null;
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    }
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    public void Close() { }
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  }
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}