Hardware/LPC/IT87XX.cs
author moel.mich
Mon, 08 Feb 2010 20:18:25 +0000
changeset 34 dc276daadb2c
parent 31 c4d1fb76a9e1
child 36 32adc68f54f8
permissions -rw-r--r--
Added support for Winbond W83627EHF, W83667HG, W83667HG-B mainboard chips.
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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.Drawing;
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using System.Text;
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namespace OpenHardwareMonitor.Hardware.LPC {
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  public class IT87XX : LPCHardware, IHardware {
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    private bool available = false;
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    private ushort address;
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    private Sensor[] temperatures;
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    private Sensor[] fans;
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    private Sensor[] voltages;
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    private float[] voltageGains;
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    // Consts
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    private const byte ITE_VENDOR_ID = 0x90;
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    // Environment Controller
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    private const byte ADDRESS_REGISTER_OFFSET = 0x05;
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    private const byte DATA_REGISTER_OFFSET = 0x06;
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    // Environment Controller Registers    
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    private const byte CONFIGURATION_REGISTER = 0x00;
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    private const byte TEMPERATURE_BASE_REG = 0x29;
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    private const byte VENDOR_ID_REGISTER = 0x58;
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    private const byte FAN_TACHOMETER_16_BIT_ENABLE_REGISTER = 0x0c;
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    private byte[] FAN_TACHOMETER_REG = 
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      new byte[] { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
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    private byte[] FAN_TACHOMETER_EXT_REG =
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      new byte[] { 0x18, 0x19, 0x1a, 0x81, 0x83 };
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    private const byte VOLTAGE_BASE_REG = 0x20;  
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    private byte ReadByte(byte register) {
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      WinRing0.WriteIoPortByte(
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        (ushort)(address + ADDRESS_REGISTER_OFFSET), register);
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      return WinRing0.ReadIoPortByte((ushort)(address + DATA_REGISTER_OFFSET));
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    }
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    public IT87XX(Chip chip, ushort address) : base (chip) {
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      this.address = address;
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      // Check vendor id
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      byte vendorId = ReadByte(VENDOR_ID_REGISTER);      
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      if (vendorId != ITE_VENDOR_ID)
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        return;
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      // Bit 0x10 of the configuration register should always be 1
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      if ((ReadByte(CONFIGURATION_REGISTER) & 0x10) == 0)
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        return;
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      temperatures = new Sensor[3];
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      for (int i = 0; i < temperatures.Length; i++) 
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        temperatures[i] = new Sensor("Temperature #" + (i + 1), i,
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          SensorType.Temperature, this);
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      fans = new Sensor[5];
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      for (int i = 0; i < fans.Length; i++)
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        fans[i] = new Sensor("Fan #" + (i + 1), i, SensorType.Fan, this);
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      voltageGains = new float[] { 
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        1, 1, 1, (6.8f / 10 + 1), 1, 1, 1, 1, 1 };
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      voltages = new Sensor[2];
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      voltages[0] = new Sensor("CPU VCore", 0, SensorType.Voltage, this);
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      voltages[1] = new Sensor("Battery", 8, SensorType.Voltage, this);           
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      available = true;
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    }
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    public bool IsAvailable {
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      get { return available; } 
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    }
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    public string GetReport() {
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      StringBuilder r = new StringBuilder();
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      r.AppendLine("LPC " + this.GetType().Name);
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      r.AppendLine();
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      r.Append("Chip ID: 0x"); r.AppendLine(chip.ToString("X"));
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      r.Append("Chip Name: "); r.AppendLine(name);
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      r.Append("Base Address: 0x"); r.AppendLine(address.ToString("X4"));
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      r.AppendLine();
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      r.AppendLine("Environment Controller Registers");
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      r.AppendLine();
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      r.AppendLine("      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F");
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      r.AppendLine();
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      for (int i = 0; i <= 0xA; i++) {
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        r.Append(" "); r.Append((i << 4).ToString("X2")); r.Append("  ");
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        for (int j = 0; j <= 0xF; j++) {
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          r.Append(" ");
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          r.Append(ReadByte((byte)((i << 4) | j)).ToString("X2"));
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        }
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        r.AppendLine();
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      }
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      r.AppendLine();
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      return r.ToString();
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    }
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    public void Update() {
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      foreach (Sensor sensor in voltages) {
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        int value = ReadByte((byte)(VOLTAGE_BASE_REG + sensor.Index));
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        sensor.Value = voltageGains[sensor.Index] * 0.001f * (value << 4);
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        if (sensor.Value > 0)
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          ActivateSensor(sensor);
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        else
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          DeactivateSensor(sensor);
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      }
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      foreach (Sensor sensor in temperatures) {
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        sbyte value = (sbyte)ReadByte((byte)(TEMPERATURE_BASE_REG + sensor.Index));
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        sensor.Value = value;
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        if (value < sbyte.MaxValue && value > 0)
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          ActivateSensor(sensor);
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        else
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          DeactivateSensor(sensor);
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      }
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      foreach (Sensor sensor in fans) {
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        int value = ReadByte(FAN_TACHOMETER_REG[sensor.Index]);
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        value |= ReadByte(FAN_TACHOMETER_EXT_REG[sensor.Index]) << 8;
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        if (value > 0) {
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          sensor.Value = (value < 0xffff) ? 1.35e6f / ((value) * 2) : 0;
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          if (sensor.Value > 0)
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            ActivateSensor(sensor);
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        } else {
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          DeactivateSensor(sensor);
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        }
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      }      
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    }   
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  }
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}