Hardware/LPC/IT87XX.cs
author moel.mich
Tue, 09 Feb 2010 18:55:45 +0000
changeset 37 124f735b73aa
parent 36 32adc68f54f8
child 63 1a7c13ac7348
permissions -rw-r--r--
Removed debug code.
     1 /*
     2   
     3   Version: MPL 1.1/GPL 2.0/LGPL 2.1
     4 
     5   The contents of this file are subject to the Mozilla Public License Version
     6   1.1 (the "License"); you may not use this file except in compliance with
     7   the License. You may obtain a copy of the License at
     8  
     9   http://www.mozilla.org/MPL/
    10 
    11   Software distributed under the License is distributed on an "AS IS" basis,
    12   WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
    13   for the specific language governing rights and limitations under the License.
    14 
    15   The Original Code is the Open Hardware Monitor code.
    16 
    17   The Initial Developer of the Original Code is 
    18   Michael Möller <m.moeller@gmx.ch>.
    19   Portions created by the Initial Developer are Copyright (C) 2009-2010
    20   the Initial Developer. All Rights Reserved.
    21 
    22   Contributor(s):
    23 
    24   Alternatively, the contents of this file may be used under the terms of
    25   either the GNU General Public License Version 2 or later (the "GPL"), or
    26   the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
    27   in which case the provisions of the GPL or the LGPL are applicable instead
    28   of those above. If you wish to allow use of your version of this file only
    29   under the terms of either the GPL or the LGPL, and not to allow others to
    30   use your version of this file under the terms of the MPL, indicate your
    31   decision by deleting the provisions above and replace them with the notice
    32   and other provisions required by the GPL or the LGPL. If you do not delete
    33   the provisions above, a recipient may use your version of this file under
    34   the terms of any one of the MPL, the GPL or the LGPL.
    35  
    36 */
    37 
    38 using System;
    39 using System.Collections.Generic;
    40 using System.Drawing;
    41 using System.Text;
    42 
    43 namespace OpenHardwareMonitor.Hardware.LPC {
    44   public class IT87XX : LPCHardware, IHardware {
    45         
    46     private bool available = false;
    47     private ushort address;
    48 
    49     private Sensor[] temperatures;
    50     private Sensor[] fans;
    51     private Sensor[] voltages;
    52     private float[] voltageGains;
    53    
    54     // Consts
    55     private const byte ITE_VENDOR_ID = 0x90;
    56        
    57     // Environment Controller
    58     private const byte ADDRESS_REGISTER_OFFSET = 0x05;
    59     private const byte DATA_REGISTER_OFFSET = 0x06;
    60 
    61     // Environment Controller Registers    
    62     private const byte CONFIGURATION_REGISTER = 0x00;
    63     private const byte TEMPERATURE_BASE_REG = 0x29;
    64     private const byte VENDOR_ID_REGISTER = 0x58;
    65     private const byte FAN_TACHOMETER_16_BIT_ENABLE_REGISTER = 0x0c;
    66     private byte[] FAN_TACHOMETER_REG = 
    67       new byte[] { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
    68     private byte[] FAN_TACHOMETER_EXT_REG =
    69       new byte[] { 0x18, 0x19, 0x1a, 0x81, 0x83 };
    70     private const byte VOLTAGE_BASE_REG = 0x20;  
    71     
    72     private byte ReadByte(byte register) {
    73       WinRing0.WriteIoPortByte(
    74         (ushort)(address + ADDRESS_REGISTER_OFFSET), register);
    75       return WinRing0.ReadIoPortByte((ushort)(address + DATA_REGISTER_OFFSET));
    76     } 
    77 
    78     public IT87XX(Chip chip, ushort address) : base (chip) {
    79       
    80       this.address = address;
    81       
    82       // Check vendor id
    83       byte vendorId = ReadByte(VENDOR_ID_REGISTER);      
    84       if (vendorId != ITE_VENDOR_ID)
    85         return;
    86 
    87       // Bit 0x10 of the configuration register should always be 1
    88       if ((ReadByte(CONFIGURATION_REGISTER) & 0x10) == 0)
    89         return;
    90 
    91       temperatures = new Sensor[3];
    92       for (int i = 0; i < temperatures.Length; i++) 
    93         temperatures[i] = new Sensor("Temperature #" + (i + 1), i,
    94           SensorType.Temperature, this);
    95 
    96       fans = new Sensor[5];
    97       for (int i = 0; i < fans.Length; i++)
    98         fans[i] = new Sensor("Fan #" + (i + 1), i, SensorType.Fan, this);
    99 
   100       voltageGains = new float[] { 
   101         1, 1, 1, (6.8f / 10 + 1), 1, 1, 1, 1, 1 };
   102 
   103       voltages = new Sensor[2];
   104       voltages[0] = new Sensor("CPU VCore", 0, SensorType.Voltage, this);
   105       voltages[1] = new Sensor("Battery", 8, SensorType.Voltage, this);           
   106 
   107       available = true;
   108     }
   109 
   110     public bool IsAvailable {
   111       get { return available; } 
   112     }
   113 
   114     public string GetReport() {
   115       StringBuilder r = new StringBuilder();
   116 
   117       r.AppendLine("LPC " + this.GetType().Name);
   118       r.AppendLine();
   119       r.Append("Chip ID: 0x"); r.AppendLine(chip.ToString("X"));
   120       r.Append("Chip Name: "); r.AppendLine(name);
   121       r.Append("Base Address: 0x"); r.AppendLine(address.ToString("X4"));
   122       r.AppendLine();
   123       r.AppendLine("Environment Controller Registers");
   124       r.AppendLine();
   125 
   126       r.AppendLine("      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F");
   127       r.AppendLine();
   128       for (int i = 0; i <= 0xA; i++) {
   129         r.Append(" "); r.Append((i << 4).ToString("X2")); r.Append("  ");
   130         for (int j = 0; j <= 0xF; j++) {
   131           r.Append(" ");
   132           r.Append(ReadByte((byte)((i << 4) | j)).ToString("X2"));
   133         }
   134         r.AppendLine();
   135       }
   136       r.AppendLine();
   137 
   138       return r.ToString();
   139     }
   140 
   141     public void Update() {
   142 
   143       foreach (Sensor sensor in voltages) {
   144         int value = ReadByte((byte)(VOLTAGE_BASE_REG + sensor.Index));
   145         sensor.Value = voltageGains[sensor.Index] * 0.001f * (value << 4);
   146         if (sensor.Value > 0)
   147           ActivateSensor(sensor);
   148         else
   149           DeactivateSensor(sensor);
   150       }
   151 
   152       foreach (Sensor sensor in temperatures) {
   153         sbyte value = (sbyte)ReadByte((byte)(TEMPERATURE_BASE_REG + sensor.Index));
   154         sensor.Value = value;
   155         if (value < sbyte.MaxValue && value > 0)
   156           ActivateSensor(sensor);
   157         else
   158           DeactivateSensor(sensor);
   159       }
   160 
   161       foreach (Sensor sensor in fans) {
   162         int value = ReadByte(FAN_TACHOMETER_REG[sensor.Index]);
   163         value |= ReadByte(FAN_TACHOMETER_EXT_REG[sensor.Index]) << 8;
   164 
   165         if (value > 0x3f) {
   166           sensor.Value = (value < 0xffff) ? 1.35e6f / ((value) * 2) : 0;
   167           if (sensor.Value > 0)
   168             ActivateSensor(sensor);
   169         } else {
   170           DeactivateSensor(sensor);
   171         }
   172       }      
   173     }   
   174   }
   175 }