1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/Hardware/LPC/LPCGroup.cs Tue Jan 26 22:37:48 2010 +0000
1.3 @@ -0,0 +1,176 @@
1.4 +/*
1.5 +
1.6 + Version: MPL 1.1/GPL 2.0/LGPL 2.1
1.7 +
1.8 + The contents of this file are subject to the Mozilla Public License Version
1.9 + 1.1 (the "License"); you may not use this file except in compliance with
1.10 + the License. You may obtain a copy of the License at
1.11 +
1.12 + http://www.mozilla.org/MPL/
1.13 +
1.14 + Software distributed under the License is distributed on an "AS IS" basis,
1.15 + WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
1.16 + for the specific language governing rights and limitations under the License.
1.17 +
1.18 + The Original Code is the Open Hardware Monitor code.
1.19 +
1.20 + The Initial Developer of the Original Code is
1.21 + Michael Möller <m.moeller@gmx.ch>.
1.22 + Portions created by the Initial Developer are Copyright (C) 2009-2010
1.23 + the Initial Developer. All Rights Reserved.
1.24 +
1.25 + Contributor(s):
1.26 +
1.27 + Alternatively, the contents of this file may be used under the terms of
1.28 + either the GNU General Public License Version 2 or later (the "GPL"), or
1.29 + the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
1.30 + in which case the provisions of the GPL or the LGPL are applicable instead
1.31 + of those above. If you wish to allow use of your version of this file only
1.32 + under the terms of either the GPL or the LGPL, and not to allow others to
1.33 + use your version of this file under the terms of the MPL, indicate your
1.34 + decision by deleting the provisions above and replace them with the notice
1.35 + and other provisions required by the GPL or the LGPL. If you do not delete
1.36 + the provisions above, a recipient may use your version of this file under
1.37 + the terms of any one of the MPL, the GPL or the LGPL.
1.38 +
1.39 +*/
1.40 +
1.41 +using System;
1.42 +using System.Collections.Generic;
1.43 +using System.Text;
1.44 +using System.Threading;
1.45 +
1.46 +namespace OpenHardwareMonitor.Hardware.LPC {
1.47 + public class LPCGroup : IGroup {
1.48 + private List<IHardware> hardware = new List<IHardware>();
1.49 +
1.50 + private Chip chip = Chip.Unknown;
1.51 +
1.52 + // I/O Ports
1.53 + private const ushort REGISTER_PORT = 0x2e;
1.54 + private const ushort VALUE_PORT = 0x2f;
1.55 +
1.56 + // Registers
1.57 + private const byte CONFIGURATION_CONTROL_REGISTER = 0x02;
1.58 + private const byte DEVCIE_SELECT_REGISTER = 0x07;
1.59 + private const byte CHIP_ID_REGISTER = 0x20;
1.60 + private const byte CHIP_REVISION_REGISTER = 0x21;
1.61 +
1.62 + private static byte ReadByte(byte register) {
1.63 + WinRing0.WriteIoPortByte(REGISTER_PORT, register);
1.64 + return WinRing0.ReadIoPortByte(VALUE_PORT);
1.65 + }
1.66 +
1.67 + private static ushort ReadWord(byte register) {
1.68 + ushort value;
1.69 + WinRing0.WriteIoPortByte(REGISTER_PORT, register);
1.70 + value = (ushort)(((ushort)WinRing0.ReadIoPortByte(VALUE_PORT)) << 8);
1.71 + WinRing0.WriteIoPortByte(REGISTER_PORT, (byte)(register + 1));
1.72 + value |= (ushort)WinRing0.ReadIoPortByte(VALUE_PORT);
1.73 + return value;
1.74 + }
1.75 +
1.76 + private static void Select(byte logicalDeviceNumber) {
1.77 + WinRing0.WriteIoPortByte(REGISTER_PORT, DEVCIE_SELECT_REGISTER);
1.78 + WinRing0.WriteIoPortByte(VALUE_PORT, logicalDeviceNumber);
1.79 + }
1.80 +
1.81 + // IT87
1.82 + private const ushort IT8716F_CHIP_ID = 0x8716;
1.83 + private const ushort IT8718F_CHIP_ID = 0x8718;
1.84 + private const ushort IT8720F_CHIP_ID = 0x8720;
1.85 + private const ushort IT8726F_CHIP_ID = 0x8726;
1.86 +
1.87 + private const byte IT87_ENVIRONMENT_CONTROLLER_LDN = 0x04;
1.88 + private const byte IT87_ENVIRONMENT_CONTROLLER_BASE_ADDR_REG = 0x60;
1.89 +
1.90 + private static void IT87Enter() {
1.91 + WinRing0.WriteIoPortByte(REGISTER_PORT, 0x87);
1.92 + WinRing0.WriteIoPortByte(REGISTER_PORT, 0x01);
1.93 + WinRing0.WriteIoPortByte(REGISTER_PORT, 0x55);
1.94 + WinRing0.WriteIoPortByte(REGISTER_PORT, 0x55);
1.95 + }
1.96 +
1.97 + internal static void IT87Exit() {
1.98 + WinRing0.WriteIoPortByte(REGISTER_PORT, CONFIGURATION_CONTROL_REGISTER);
1.99 + WinRing0.WriteIoPortByte(VALUE_PORT, 0x02);
1.100 + }
1.101 +
1.102 + // Winbond
1.103 + private static void WinbondEnter() {
1.104 + WinRing0.WriteIoPortByte(REGISTER_PORT, 0x87);
1.105 + WinRing0.WriteIoPortByte(REGISTER_PORT, 0x87);
1.106 + }
1.107 +
1.108 + private static void WinbondExit() {
1.109 + WinRing0.WriteIoPortByte(REGISTER_PORT, 0xAA);
1.110 + }
1.111 +
1.112 + public LPCGroup() {
1.113 + if (!WinRing0.IsAvailable)
1.114 + return;
1.115 +
1.116 + WinbondEnter();
1.117 +
1.118 + byte id = ReadByte(CHIP_ID_REGISTER);
1.119 + byte revision = ReadByte(CHIP_REVISION_REGISTER);
1.120 + switch (id) {
1.121 + case 0xA0:
1.122 + switch (revision & 0xF0) {
1.123 + case 0x20: chip = Chip.W83627DHG; break;
1.124 + default: chip = Chip.Unknown; break;
1.125 + } break;
1.126 + default: chip = Chip.Unknown; break;
1.127 + }
1.128 + if (chip != Chip.Unknown) {
1.129 +
1.130 + WinbondExit();
1.131 +
1.132 + W83627DHG w83627dhg = new W83627DHG(revision);
1.133 + if (w83627dhg.IsAvailable)
1.134 + hardware.Add(w83627dhg);
1.135 + return;
1.136 + }
1.137 +
1.138 + IT87Enter();
1.139 +
1.140 + switch (ReadWord(CHIP_ID_REGISTER)) {
1.141 + case 0x8716: chip = Chip.IT8716F; break;
1.142 + case 0x8718: chip = Chip.IT8718F; break;
1.143 + case 0x8720: chip = Chip.IT8720F; break;
1.144 + case 0x8726: chip = Chip.IT8726F; break;
1.145 + default: chip = Chip.Unknown; break;
1.146 + }
1.147 +
1.148 + if (chip != Chip.Unknown) {
1.149 + Select(IT87_ENVIRONMENT_CONTROLLER_LDN);
1.150 + ushort address = ReadWord(IT87_ENVIRONMENT_CONTROLLER_BASE_ADDR_REG);
1.151 + Thread.Sleep(1);
1.152 + ushort verify = ReadWord(IT87_ENVIRONMENT_CONTROLLER_BASE_ADDR_REG);
1.153 +
1.154 + IT87Exit();
1.155 +
1.156 + if (address != verify || address == 0 || (address & 0xF007) != 0)
1.157 + return;
1.158 +
1.159 + IT87 it87 = new IT87(chip, address);
1.160 + if (it87.IsAvailable)
1.161 + hardware.Add(it87);
1.162 +
1.163 + return;
1.164 + }
1.165 + }
1.166 +
1.167 + public IHardware[] Hardware {
1.168 + get {
1.169 + return hardware.ToArray();
1.170 + }
1.171 + }
1.172 +
1.173 + public string GetReport() {
1.174 + return null;
1.175 + }
1.176 +
1.177 + public void Close() { }
1.178 + }
1.179 +}