OpenHardwareMonitor: Hardware/LPC/IT87XX.cs@a608358af258

     1 /*

     3   Version: MPL 1.1/GPL 2.0/LGPL 2.1

     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

     9   http://www.mozilla.org/MPL/

    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.

    15   The Original Code is the Open Hardware Monitor code.

    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.

    22   Contributor(s):

    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.

    36 */

    38 using System.Globalization;

    39 using System.Text;

    41 namespace OpenHardwareMonitor.Hardware.LPC {

    42   internal class IT87XX : ISuperIO {

    44     private readonly ushort address;

    45     private readonly Chip chip;

    46     private readonly byte version;

    48     private readonly ushort gpioAddress;

    49     private readonly int gpioCount;

    51     private readonly ushort addressReg;

    52     private readonly ushort dataReg;

    54     private readonly float?[] voltages = new float?[0];

    55     private readonly float?[] temperatures = new float?[0];

    56     private readonly float?[] fans = new float?[0];

    58     private readonly float voltageGain;

    60     // Consts

    61     private const byte ITE_VENDOR_ID = 0x90;

    63     // Environment Controller

    64     private const byte ADDRESS_REGISTER_OFFSET = 0x05;

    65     private const byte DATA_REGISTER_OFFSET = 0x06;

    67     // Environment Controller Registers

    68     private const byte CONFIGURATION_REGISTER = 0x00;

    69     private const byte TEMPERATURE_BASE_REG = 0x29;

    70     private const byte VENDOR_ID_REGISTER = 0x58;

    71     private const byte FAN_TACHOMETER_16_BIT_ENABLE_REGISTER = 0x0c;

    72     private readonly byte[] FAN_TACHOMETER_REG =

    73       new byte[] { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };

    74     private readonly byte[] FAN_TACHOMETER_EXT_REG =

    75       new byte[] { 0x18, 0x19, 0x1a, 0x81, 0x83 };

    76     private const byte VOLTAGE_BASE_REG = 0x20;

    78     private byte ReadByte(byte register, out bool valid) {

    79       Ring0.WriteIoPort(addressReg, register);

    80       byte value = Ring0.ReadIoPort(dataReg);

    81       valid = register == Ring0.ReadIoPort(addressReg);

    82       return value;

    83     }

    85     private bool WriteByte(byte register, byte value) {

    86       Ring0.WriteIoPort(addressReg, register);

    87       Ring0.WriteIoPort(dataReg, value);

    88       return register == Ring0.ReadIoPort(addressReg);

    89     }

    91     public byte? ReadGPIO(int index) {

    92       if (index >= gpioCount)

    93         return null;

    95       return Ring0.ReadIoPort((ushort)(gpioAddress + index));

    96     }

    98     public void WriteGPIO(int index, byte value) {

    99       if (index >= gpioCount)

   100         return;

   102       Ring0.WriteIoPort((ushort)(gpioAddress + index), value);

   103     }

   105     public IT87XX(Chip chip, ushort address, ushort gpioAddress, byte version) {

   107       this.address = address;

   108       this.chip = chip;

   109       this.version = version;

   110       this.addressReg = (ushort)(address + ADDRESS_REGISTER_OFFSET);

   111       this.dataReg = (ushort)(address + DATA_REGISTER_OFFSET);

   112       this.gpioAddress = gpioAddress;

   114       // Check vendor id

   115       bool valid;

   116       byte vendorId = ReadByte(VENDOR_ID_REGISTER, out valid);

   117       if (!valid || vendorId != ITE_VENDOR_ID)

   118         return;

   120       // Bit 0x10 of the configuration register should always be 1

   121       if ((ReadByte(CONFIGURATION_REGISTER, out valid) & 0x10) == 0)

   122         return;

   123       if (!valid)

   124         return;

   126       voltages = new float?[9];

   127       temperatures = new float?[3];

   128       fans = new float?[5];

   130       // The IT8721F uses a 12mV resultion ADC, all others 16mV

   131       if (chip == Chip.IT8721F) {

   132         voltageGain = 0.012f;

   133       } else {

   134         voltageGain = 0.016f;

   135       }

   137       // Set the number of GPIO sets

   138       switch (chip) {

   139         case Chip.IT8712F:

   140         case Chip.IT8716F:

   141         case Chip.IT8718F:

   142         case Chip.IT8726F:

   143           gpioCount = 5;

   144           break;

   145         case Chip.IT8720F:

   146         case Chip.IT8721F:

   147           gpioCount = 8;

   148           break;

   149       }

   150     }

   152     public Chip Chip { get { return chip; } }

   153     public float?[] Voltages { get { return voltages; } }

   154     public float?[] Temperatures { get { return temperatures; } }

   155     public float?[] Fans { get { return fans; } }

   157     public string GetReport() {

   158       StringBuilder r = new StringBuilder();

   160       r.AppendLine("LPC " + this.GetType().Name);

   161       r.AppendLine();

   162       r.Append("Chip ID: 0x"); r.AppendLine(chip.ToString("X"));

   163       r.Append("Chip Version: 0x"); r.AppendLine(

   164         version.ToString("X", CultureInfo.InvariantCulture));

   165       r.Append("Base Address: 0x"); r.AppendLine(

   166         address.ToString("X4", CultureInfo.InvariantCulture));

   167       r.Append("GPIO Address: 0x"); r.AppendLine(

   168         gpioAddress.ToString("X4", CultureInfo.InvariantCulture));

   169       r.AppendLine();

   171       if (!Ring0.WaitIsaBusMutex(100))

   172         return r.ToString();

   174       r.AppendLine("Environment Controller Registers");

   175       r.AppendLine();

   176       r.AppendLine("      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F");

   177       r.AppendLine();

   178       for (int i = 0; i <= 0xA; i++) {

   179         r.Append(" ");

   180         r.Append((i << 4).ToString("X2", CultureInfo.InvariantCulture));

   181         r.Append("  ");

   182         for (int j = 0; j <= 0xF; j++) {

   183           r.Append(" ");

   184           bool valid;

   185           byte value = ReadByte((byte)((i << 4) | j), out valid);

   186           r.Append(

   187             valid ? value.ToString("X2", CultureInfo.InvariantCulture) : "??");

   188         }

   189         r.AppendLine();

   190       }

   191       r.AppendLine();

   193       r.AppendLine("GPIO Registers");

   194       r.AppendLine();

   195       for (int i = 0; i < gpioCount; i++) {

   196         r.Append(" ");

   197         r.Append(ReadGPIO(i).Value.ToString("X2",

   198           CultureInfo.InvariantCulture));

   199       }

   200       r.AppendLine();

   201       r.AppendLine();

   203       Ring0.ReleaseIsaBusMutex();

   205       return r.ToString();

   206     }

   208     public void Update() {

   209       if (!Ring0.WaitIsaBusMutex(10))

   210         return;

   212       for (int i = 0; i < voltages.Length; i++) {

   213         bool valid;

   215         float value =

   216           voltageGain * ReadByte((byte)(VOLTAGE_BASE_REG + i), out valid);

   218         if (!valid)

   219           continue;

   220         if (value > 0)

   221           voltages[i] = value;

   222         else

   223           voltages[i] = null;

   224       }

   226       for (int i = 0; i < temperatures.Length; i++) {

   227         bool valid;

   228         sbyte value = (sbyte)ReadByte(

   229           (byte)(TEMPERATURE_BASE_REG + i), out valid);

   230         if (!valid)

   231           continue;

   233         if (value < sbyte.MaxValue && value > 0)

   234           temperatures[i] = value;

   235         else

   236           temperatures[i] = null;

   237       }

   239       for (int i = 0; i < fans.Length; i++) {

   240         bool valid;

   241         int value = ReadByte(FAN_TACHOMETER_REG[i], out valid);

   242         if (!valid)

   243           continue;

   244         value |= ReadByte(FAN_TACHOMETER_EXT_REG[i], out valid) << 8;

   245         if (!valid)

   246           continue;

   248         if (value > 0x3f) {

   249           fans[i] = (value < 0xffff) ? 1.35e6f / ((value) * 2) : 0;

   250         } else {

   251           fans[i] = null;

   252         }

   253       }

   255       Ring0.ReleaseIsaBusMutex();

   256     }

   257   }

   258 }

author	moel.mich
	Fri, 11 Feb 2011 22:29:26 +0000
changeset 255	a608358af258
parent 236	763675f19ff4
child 272	037a2d66082f
permissions	-rw-r--r--