Hardware/LPC/IT87XX.cs
author moel.mich
Tue, 09 Mar 2010 20:35:19 +0000
changeset 78 52c16b1d5536
parent 63 1a7c13ac7348
child 84 05bf128434c6
permissions -rw-r--r--
Added additional checks to the ITE super I/O reading code, to reduce cases where wrong values are read.
moel@16
     1
/*
moel@16
     2
  
moel@16
     3
  Version: MPL 1.1/GPL 2.0/LGPL 2.1
moel@16
     4
moel@16
     5
  The contents of this file are subject to the Mozilla Public License Version
moel@16
     6
  1.1 (the "License"); you may not use this file except in compliance with
moel@16
     7
  the License. You may obtain a copy of the License at
moel@16
     8
 
moel@16
     9
  http://www.mozilla.org/MPL/
moel@16
    10
moel@16
    11
  Software distributed under the License is distributed on an "AS IS" basis,
moel@16
    12
  WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
moel@16
    13
  for the specific language governing rights and limitations under the License.
moel@16
    14
moel@16
    15
  The Original Code is the Open Hardware Monitor code.
moel@16
    16
moel@16
    17
  The Initial Developer of the Original Code is 
moel@16
    18
  Michael Möller <m.moeller@gmx.ch>.
moel@16
    19
  Portions created by the Initial Developer are Copyright (C) 2009-2010
moel@16
    20
  the Initial Developer. All Rights Reserved.
moel@16
    21
moel@16
    22
  Contributor(s):
moel@16
    23
moel@16
    24
  Alternatively, the contents of this file may be used under the terms of
moel@16
    25
  either the GNU General Public License Version 2 or later (the "GPL"), or
moel@16
    26
  the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
moel@16
    27
  in which case the provisions of the GPL or the LGPL are applicable instead
moel@16
    28
  of those above. If you wish to allow use of your version of this file only
moel@16
    29
  under the terms of either the GPL or the LGPL, and not to allow others to
moel@16
    30
  use your version of this file under the terms of the MPL, indicate your
moel@16
    31
  decision by deleting the provisions above and replace them with the notice
moel@16
    32
  and other provisions required by the GPL or the LGPL. If you do not delete
moel@16
    33
  the provisions above, a recipient may use your version of this file under
moel@16
    34
  the terms of any one of the MPL, the GPL or the LGPL.
moel@16
    35
 
moel@16
    36
*/
moel@16
    37
moel@16
    38
using System;
moel@16
    39
using System.Collections.Generic;
moel@16
    40
using System.Drawing;
moel@16
    41
using System.Text;
moel@16
    42
moel@16
    43
namespace OpenHardwareMonitor.Hardware.LPC {
moel@31
    44
  public class IT87XX : LPCHardware, IHardware {
moel@16
    45
        
moel@16
    46
    private bool available = false;
moel@16
    47
    private ushort address;
moel@16
    48
moel@78
    49
    private readonly ushort addressReg;
moel@78
    50
    private readonly ushort dataReg;
moel@78
    51
moel@16
    52
    private Sensor[] temperatures;
moel@16
    53
    private Sensor[] fans;
moel@16
    54
    private Sensor[] voltages;
moel@16
    55
    private float[] voltageGains;
moel@16
    56
   
moel@16
    57
    // Consts
moel@16
    58
    private const byte ITE_VENDOR_ID = 0x90;
moel@16
    59
       
moel@16
    60
    // Environment Controller
moel@16
    61
    private const byte ADDRESS_REGISTER_OFFSET = 0x05;
moel@16
    62
    private const byte DATA_REGISTER_OFFSET = 0x06;
moel@16
    63
moel@16
    64
    // Environment Controller Registers    
moel@16
    65
    private const byte CONFIGURATION_REGISTER = 0x00;
moel@16
    66
    private const byte TEMPERATURE_BASE_REG = 0x29;
moel@16
    67
    private const byte VENDOR_ID_REGISTER = 0x58;
moel@16
    68
    private const byte FAN_TACHOMETER_16_BIT_ENABLE_REGISTER = 0x0c;
moel@16
    69
    private byte[] FAN_TACHOMETER_REG = 
moel@16
    70
      new byte[] { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
moel@16
    71
    private byte[] FAN_TACHOMETER_EXT_REG =
moel@16
    72
      new byte[] { 0x18, 0x19, 0x1a, 0x81, 0x83 };
moel@78
    73
    private const byte VOLTAGE_BASE_REG = 0x20;
moel@78
    74
moel@78
    75
    private byte ReadByte(byte register, out bool valid) {
moel@78
    76
      WinRing0.WriteIoPortByte(addressReg, register);
moel@78
    77
      byte value = WinRing0.ReadIoPortByte(dataReg);
moel@78
    78
      valid = register == WinRing0.ReadIoPortByte(addressReg);
moel@78
    79
      return value;
moel@78
    80
    }
moel@16
    81
moel@31
    82
    public IT87XX(Chip chip, ushort address) : base (chip) {
moel@16
    83
      
moel@16
    84
      this.address = address;
moel@78
    85
      this.addressReg = (ushort)(address + ADDRESS_REGISTER_OFFSET);
moel@78
    86
      this.dataReg = (ushort)(address + DATA_REGISTER_OFFSET);
moel@16
    87
      
moel@16
    88
      // Check vendor id
moel@78
    89
      bool valid;
moel@78
    90
      byte vendorId = ReadByte(VENDOR_ID_REGISTER, out valid);       
moel@78
    91
      if (!valid || vendorId != ITE_VENDOR_ID)
moel@16
    92
        return;
moel@16
    93
moel@16
    94
      // Bit 0x10 of the configuration register should always be 1
moel@78
    95
      if ((ReadByte(CONFIGURATION_REGISTER, out valid) & 0x10) == 0)
moel@78
    96
        return;
moel@78
    97
      if (!valid)
moel@16
    98
        return;
moel@16
    99
moel@16
   100
      temperatures = new Sensor[3];
moel@16
   101
      for (int i = 0; i < temperatures.Length; i++) 
moel@63
   102
        temperatures[i] = new Sensor("Temperature #" + (i + 1), i, null,
moel@63
   103
          SensorType.Temperature, this, new ParameterDescription[] {
moel@63
   104
            new ParameterDescription("Offset", "Temperature offset.", 0)
moel@63
   105
          });
moel@16
   106
moel@16
   107
      fans = new Sensor[5];
moel@16
   108
      for (int i = 0; i < fans.Length; i++)
moel@16
   109
        fans[i] = new Sensor("Fan #" + (i + 1), i, SensorType.Fan, this);
moel@16
   110
moel@16
   111
      voltageGains = new float[] { 
moel@16
   112
        1, 1, 1, (6.8f / 10 + 1), 1, 1, 1, 1, 1 };
moel@16
   113
moel@16
   114
      voltages = new Sensor[2];
moel@16
   115
      voltages[0] = new Sensor("CPU VCore", 0, SensorType.Voltage, this);
moel@16
   116
      voltages[1] = new Sensor("Battery", 8, SensorType.Voltage, this);           
moel@16
   117
moel@16
   118
      available = true;
moel@16
   119
    }
moel@16
   120
moel@16
   121
    public bool IsAvailable {
moel@16
   122
      get { return available; } 
moel@16
   123
    }
moel@16
   124
moel@16
   125
    public string GetReport() {
moel@16
   126
      StringBuilder r = new StringBuilder();
moel@16
   127
moel@31
   128
      r.AppendLine("LPC " + this.GetType().Name);
moel@16
   129
      r.AppendLine();
moel@16
   130
      r.Append("Chip ID: 0x"); r.AppendLine(chip.ToString("X"));
moel@16
   131
      r.Append("Chip Name: "); r.AppendLine(name);
moel@16
   132
      r.Append("Base Address: 0x"); r.AppendLine(address.ToString("X4"));
moel@16
   133
      r.AppendLine();
moel@16
   134
      r.AppendLine("Environment Controller Registers");
moel@16
   135
      r.AppendLine();
moel@16
   136
moel@16
   137
      r.AppendLine("      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F");
moel@16
   138
      r.AppendLine();
moel@16
   139
      for (int i = 0; i <= 0xA; i++) {
moel@16
   140
        r.Append(" "); r.Append((i << 4).ToString("X2")); r.Append("  ");
moel@16
   141
        for (int j = 0; j <= 0xF; j++) {
moel@16
   142
          r.Append(" ");
moel@78
   143
          bool valid;
moel@78
   144
          byte value = ReadByte((byte)((i << 4) | j), out valid);
moel@78
   145
          if (valid)
moel@78
   146
            r.Append(value.ToString("X2"));
moel@78
   147
          else
moel@78
   148
            r.Append("??");
moel@16
   149
        }
moel@16
   150
        r.AppendLine();
moel@16
   151
      }
moel@16
   152
      r.AppendLine();
moel@16
   153
moel@16
   154
      return r.ToString();
moel@16
   155
    }
moel@16
   156
moel@16
   157
    public void Update() {
moel@16
   158
moel@16
   159
      foreach (Sensor sensor in voltages) {
moel@78
   160
        bool valid;
moel@78
   161
        int value = ReadByte(
moel@78
   162
          (byte)(VOLTAGE_BASE_REG + sensor.Index), out valid);
moel@78
   163
        if (!valid)
moel@78
   164
          continue;
moel@78
   165
moel@16
   166
        sensor.Value = voltageGains[sensor.Index] * 0.001f * (value << 4);
moel@16
   167
        if (sensor.Value > 0)
moel@16
   168
          ActivateSensor(sensor);
moel@16
   169
        else
moel@16
   170
          DeactivateSensor(sensor);
moel@16
   171
      }
moel@16
   172
moel@16
   173
      foreach (Sensor sensor in temperatures) {
moel@78
   174
        bool valid;
moel@78
   175
        sbyte value = (sbyte)ReadByte(
moel@78
   176
          (byte)(TEMPERATURE_BASE_REG + sensor.Index), out valid);
moel@78
   177
        if (!valid)
moel@78
   178
          continue;
moel@78
   179
moel@63
   180
        sensor.Value = value + sensor.Parameters[0].Value;
moel@16
   181
        if (value < sbyte.MaxValue && value > 0)
moel@16
   182
          ActivateSensor(sensor);
moel@16
   183
        else
moel@16
   184
          DeactivateSensor(sensor);
moel@16
   185
      }
moel@16
   186
moel@16
   187
      foreach (Sensor sensor in fans) {
moel@78
   188
        bool valid;
moel@78
   189
        int value = ReadByte(FAN_TACHOMETER_REG[sensor.Index], out valid);
moel@78
   190
        if (!valid) 
moel@78
   191
          continue;
moel@78
   192
        value |= ReadByte(FAN_TACHOMETER_EXT_REG[sensor.Index], out valid) << 8;
moel@78
   193
        if (!valid)
moel@78
   194
          continue;
moel@16
   195
moel@36
   196
        if (value > 0x3f) {
moel@16
   197
          sensor.Value = (value < 0xffff) ? 1.35e6f / ((value) * 2) : 0;
moel@34
   198
          if (sensor.Value > 0)
moel@34
   199
            ActivateSensor(sensor);
moel@16
   200
        } else {
moel@16
   201
          DeactivateSensor(sensor);
moel@16
   202
        }
moel@16
   203
      }      
moel@31
   204
    }   
moel@16
   205
  }
moel@16
   206
}