moel@16: /*
moel@16:   
moel@16:   Version: MPL 1.1/GPL 2.0/LGPL 2.1
moel@16: 
moel@16:   The contents of this file are subject to the Mozilla Public License Version
moel@16:   1.1 (the "License"); you may not use this file except in compliance with
moel@16:   the License. You may obtain a copy of the License at
moel@16:  
moel@16:   http://www.mozilla.org/MPL/
moel@16: 
moel@16:   Software distributed under the License is distributed on an "AS IS" basis,
moel@16:   WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
moel@16:   for the specific language governing rights and limitations under the License.
moel@16: 
moel@16:   The Original Code is the Open Hardware Monitor code.
moel@16: 
moel@16:   The Initial Developer of the Original Code is 
moel@16:   Michael Möller <m.moeller@gmx.ch>.
moel@16:   Portions created by the Initial Developer are Copyright (C) 2009-2010
moel@16:   the Initial Developer. All Rights Reserved.
moel@16: 
moel@16:   Contributor(s):
moel@16: 
moel@16:   Alternatively, the contents of this file may be used under the terms of
moel@16:   either the GNU General Public License Version 2 or later (the "GPL"), or
moel@16:   the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
moel@16:   in which case the provisions of the GPL or the LGPL are applicable instead
moel@16:   of those above. If you wish to allow use of your version of this file only
moel@16:   under the terms of either the GPL or the LGPL, and not to allow others to
moel@16:   use your version of this file under the terms of the MPL, indicate your
moel@16:   decision by deleting the provisions above and replace them with the notice
moel@16:   and other provisions required by the GPL or the LGPL. If you do not delete
moel@16:   the provisions above, a recipient may use your version of this file under
moel@16:   the terms of any one of the MPL, the GPL or the LGPL.
moel@16:  
moel@16: */
moel@16: 
moel@166: using System.Globalization;
moel@16: using System.Text;
moel@16: 
moel@16: namespace OpenHardwareMonitor.Hardware.LPC {
moel@165:   internal class IT87XX : ISuperIO {
moel@130:        
moel@16:     private ushort address;
moel@130:     private Chip chip;
moel@145:     private byte version;
moel@16: 
moel@78:     private readonly ushort addressReg;
moel@78:     private readonly ushort dataReg;
moel@78: 
moel@130:     private float?[] voltages = new float?[0];
moel@130:     private float?[] temperatures = new float?[0];
moel@130:     private float?[] fans = new float?[0];
moel@170: 
moel@170:     private readonly float voltageGain;
moel@16:    
moel@16:     // Consts
moel@16:     private const byte ITE_VENDOR_ID = 0x90;
moel@16:        
moel@16:     // Environment Controller
moel@16:     private const byte ADDRESS_REGISTER_OFFSET = 0x05;
moel@16:     private const byte DATA_REGISTER_OFFSET = 0x06;
moel@16: 
moel@16:     // Environment Controller Registers    
moel@16:     private const byte CONFIGURATION_REGISTER = 0x00;
moel@16:     private const byte TEMPERATURE_BASE_REG = 0x29;
moel@16:     private const byte VENDOR_ID_REGISTER = 0x58;
moel@16:     private const byte FAN_TACHOMETER_16_BIT_ENABLE_REGISTER = 0x0c;
moel@16:     private byte[] FAN_TACHOMETER_REG = 
moel@16:       new byte[] { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
moel@16:     private byte[] FAN_TACHOMETER_EXT_REG =
moel@16:       new byte[] { 0x18, 0x19, 0x1a, 0x81, 0x83 };
moel@78:     private const byte VOLTAGE_BASE_REG = 0x20;
moel@78: 
moel@78:     private byte ReadByte(byte register, out bool valid) {
moel@78:       WinRing0.WriteIoPortByte(addressReg, register);
moel@78:       byte value = WinRing0.ReadIoPortByte(dataReg);
moel@78:       valid = register == WinRing0.ReadIoPortByte(addressReg);
moel@78:       return value;
moel@144:     } 
moel@16: 
moel@145:     public IT87XX(Chip chip, ushort address, byte version) {
moel@16:       
moel@16:       this.address = address;
moel@130:       this.chip = chip;
moel@145:       this.version = version;
moel@78:       this.addressReg = (ushort)(address + ADDRESS_REGISTER_OFFSET);
moel@78:       this.dataReg = (ushort)(address + DATA_REGISTER_OFFSET);
moel@16:       
moel@16:       // Check vendor id
moel@78:       bool valid;
moel@78:       byte vendorId = ReadByte(VENDOR_ID_REGISTER, out valid);       
moel@78:       if (!valid || vendorId != ITE_VENDOR_ID)
moel@16:         return;
moel@16: 
moel@16:       // Bit 0x10 of the configuration register should always be 1
moel@78:       if ((ReadByte(CONFIGURATION_REGISTER, out valid) & 0x10) == 0)
moel@78:         return;
moel@78:       if (!valid)
moel@16:         return;
moel@16: 
moel@130:       voltages = new float?[9];
moel@130:       temperatures = new float?[3];
moel@130:       fans = new float?[5];
moel@170: 
moel@170:       // The IT8721F uses a 12mV resultion ADC, all others 16mV
moel@170:       if (chip == Chip.IT8721F) {
moel@170:         voltageGain = 0.012f;
moel@170:       } else {
moel@170:         voltageGain = 0.016f;
moel@170:       }
moel@16:     }
moel@16: 
moel@130:     public Chip Chip { get { return chip; } }
moel@130:     public float?[] Voltages { get { return voltages; } }
moel@130:     public float?[] Temperatures { get { return temperatures; } }
moel@130:     public float?[] Fans { get { return fans; } }
moel@16: 
moel@130:     public string GetReport() {
moel@16:       StringBuilder r = new StringBuilder();
moel@16: 
moel@31:       r.AppendLine("LPC " + this.GetType().Name);
moel@16:       r.AppendLine();
moel@16:       r.Append("Chip ID: 0x"); r.AppendLine(chip.ToString("X"));
moel@166:       r.Append("Chip Version: 0x"); r.AppendLine(
moel@166:         version.ToString("X", CultureInfo.InvariantCulture));
moel@166:       r.Append("Base Address: 0x"); r.AppendLine(
moel@166:         address.ToString("X4", CultureInfo.InvariantCulture));
moel@16:       r.AppendLine();
moel@162: 
moel@163:       if (!WinRing0.WaitIsaBusMutex(100))
moel@162:         return r.ToString();
moel@162: 
moel@16:       r.AppendLine("Environment Controller Registers");
moel@16:       r.AppendLine();
moel@16:       r.AppendLine("      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F");
moel@16:       r.AppendLine();
moel@16:       for (int i = 0; i <= 0xA; i++) {
moel@166:         r.Append(" "); 
moel@166:         r.Append((i << 4).ToString("X2", CultureInfo.InvariantCulture)); 
moel@166:         r.Append("  ");
moel@16:         for (int j = 0; j <= 0xF; j++) {
moel@16:           r.Append(" ");
moel@78:           bool valid;
moel@78:           byte value = ReadByte((byte)((i << 4) | j), out valid);
moel@78:           if (valid)
moel@166:             r.Append(value.ToString("X2", CultureInfo.InvariantCulture));
moel@78:           else
moel@78:             r.Append("??");
moel@16:         }
moel@16:         r.AppendLine();
moel@16:       }
moel@16:       r.AppendLine();
moel@16: 
moel@162:       WinRing0.ReleaseIsaBusMutex();
moel@162: 
moel@16:       return r.ToString();
moel@16:     }
moel@16: 
moel@130:     public void Update() {
moel@163:       if (!WinRing0.WaitIsaBusMutex(10))
moel@162:         return;
moel@16: 
moel@130:       for (int i = 0; i < voltages.Length; i++) {
moel@78:         bool valid;
moel@170:         
moel@170:         float value = 
moel@170:           voltageGain * ReadByte((byte)(VOLTAGE_BASE_REG + i), out valid);   
moel@170: 
moel@130:         if (!valid)
moel@130:           continue;
moel@130:         if (value > 0)
moel@130:           voltages[i] = value;  
moel@130:         else
moel@130:           voltages[i] = null;
moel@130:       }
moel@130: 
moel@130:       for (int i = 0; i < temperatures.Length; i++) {
moel@130:         bool valid;
moel@130:         sbyte value = (sbyte)ReadByte(
moel@130:           (byte)(TEMPERATURE_BASE_REG + i), out valid);
moel@78:         if (!valid)
moel@78:           continue;
moel@78: 
moel@130:         if (value < sbyte.MaxValue && value > 0)
moel@130:           temperatures[i] = value;
moel@130:         else
moel@130:           temperatures[i] = null;       
moel@16:       }
moel@16: 
moel@130:       for (int i = 0; i < fans.Length; i++) {
moel@78:         bool valid;
moel@130:         int value = ReadByte(FAN_TACHOMETER_REG[i], out valid);
moel@78:         if (!valid) 
moel@78:           continue;
moel@130:         value |= ReadByte(FAN_TACHOMETER_EXT_REG[i], out valid) << 8;
moel@78:         if (!valid)
moel@78:           continue;
moel@16: 
moel@36:         if (value > 0x3f) {
moel@130:           fans[i] = (value < 0xffff) ? 1.35e6f / ((value) * 2) : 0;
moel@16:         } else {
moel@130:           fans[i] = null;
moel@16:         }
moel@162:       }
moel@162: 
moel@162:       WinRing0.ReleaseIsaBusMutex();
moel@126:     }
moel@130:   } 
moel@16: }