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.
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.
39 using System.Runtime.InteropServices;
40 using System.Threading;
42 namespace OpenHardwareMonitor.Hardware {
44 internal class WinRing0 {
46 private WinRing0() { }
48 public enum OlsDllStatus{
50 OLS_DLL_UNSUPPORTED_PLATFORM = 1,
51 OLS_DLL_DRIVER_NOT_LOADED = 2,
52 OLS_DLL_DRIVER_NOT_FOUND = 3,
53 OLS_DLL_DRIVER_UNLOADED = 4,
54 OLS_DLL_DRIVER_NOT_LOADED_ON_NETWORK = 5,
55 OLS_DLL_UNKNOWN_ERROR = 9
58 private static bool available;
59 private static Mutex isaBusMutex;
61 private static string GetDllName() {
62 int p = (int)Environment.OSVersion.Platform;
63 if ((p == 4) || (p == 128)) {
64 if (IntPtr.Size == 4) {
67 return "libring0x64.so";
70 if (IntPtr.Size == 4) {
71 return "WinRing0.dll";
73 return "WinRing0x64.dll";
78 private delegate bool InitializeOlsDelegate();
79 private delegate void DeinitializeOlsDelegate();
81 public delegate bool IsCpuidDelegate();
82 public delegate bool CpuidTxDelegate(uint index, uint ecxValue,
83 out uint eax, out uint ebx, out uint ecx, out uint edx,
84 UIntPtr threadAffinityMask);
85 public delegate bool RdmsrDelegate(uint index, out uint eax, out uint edx);
86 public delegate bool RdmsrTxDelegate(uint index, out uint eax, out uint edx,
87 UIntPtr threadAffinityMask);
88 public delegate byte ReadIoPortByteDelegate(ushort port);
89 public delegate void WriteIoPortByteDelegate(ushort port, byte value);
90 public delegate bool ReadPciConfigDwordExDelegate(uint pciAddress,
91 uint regAddress, out uint value);
92 public delegate bool WritePciConfigDwordExDelegate(uint pciAddress,
93 uint regAddress, uint value);
94 public delegate bool RdtscTxDelegate(out uint eax, out uint edx,
95 UIntPtr threadAffinityMask);
96 public delegate bool RdtscDelegate(out uint eax, out uint edx);
98 private static readonly InitializeOlsDelegate InitializeOls =
99 CreateDelegate<InitializeOlsDelegate>("InitializeOls");
100 private static readonly DeinitializeOlsDelegate DeinitializeOls =
101 CreateDelegate<DeinitializeOlsDelegate>("DeinitializeOls");
103 public static readonly IsCpuidDelegate IsCpuid =
104 CreateDelegate<IsCpuidDelegate>("IsCpuid");
105 public static readonly CpuidTxDelegate CpuidTx =
106 CreateDelegate<CpuidTxDelegate>("CpuidTx");
107 public static readonly RdmsrDelegate Rdmsr =
108 CreateDelegate<RdmsrDelegate>("Rdmsr");
109 public static readonly RdmsrTxDelegate RdmsrTx =
110 CreateDelegate<RdmsrTxDelegate>("RdmsrTx");
111 public static readonly ReadIoPortByteDelegate ReadIoPortByte =
112 CreateDelegate<ReadIoPortByteDelegate>("ReadIoPortByte");
113 public static readonly WriteIoPortByteDelegate WriteIoPortByte =
114 CreateDelegate<WriteIoPortByteDelegate>("WriteIoPortByte");
115 public static readonly ReadPciConfigDwordExDelegate ReadPciConfigDwordEx =
116 CreateDelegate<ReadPciConfigDwordExDelegate>("ReadPciConfigDwordEx");
117 public static readonly WritePciConfigDwordExDelegate WritePciConfigDwordEx =
118 CreateDelegate<WritePciConfigDwordExDelegate>("WritePciConfigDwordEx");
119 public static readonly RdtscTxDelegate RdtscTx =
120 CreateDelegate<RdtscTxDelegate>("RdtscTx");
121 public static readonly RdtscDelegate Rdtsc =
122 CreateDelegate<RdtscDelegate>("Rdtsc");
124 private static T CreateDelegate<T>(string entryPoint) where T : class {
125 DllImportAttribute attribute = new DllImportAttribute(GetDllName());
126 attribute.CallingConvention = CallingConvention.Winapi;
127 attribute.PreserveSig = true;
128 attribute.EntryPoint = entryPoint;
129 attribute.CharSet = CharSet.Auto;
131 PInvokeDelegateFactory.CreateDelegate(attribute, out result);
135 public static void Open() {
137 if (InitializeOls != null && InitializeOls())
139 } catch (DllNotFoundException) { }
141 isaBusMutex = new Mutex(false, "Access_ISABUS.HTP.Method");
144 public static bool IsAvailable {
145 get { return available; }
148 public static void Close() {
154 public static bool WaitIsaBusMutex(int millisecondsTimeout) {
156 return isaBusMutex.WaitOne(millisecondsTimeout, false);
157 } catch (AbandonedMutexException) { return false; }
158 catch (InvalidOperationException) { return false; }
161 public static void ReleaseIsaBusMutex() {
162 isaBusMutex.ReleaseMutex();
165 public const uint InvalidPciAddress = 0xFFFFFFFF;
167 public static uint GetPciAddress(byte bus, byte device, byte function) {
169 (uint)(((bus & 0xFF) << 8) | ((device & 0x1F) << 3) | (function & 7));