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 RdtscDelegate(out uint eax, out uint edx);
95 public delegate bool RdtscTxDelegate(out uint eax, out uint edx,
96 UIntPtr threadAffinityMask);
97 public delegate bool WrmsrDelegate(uint index, uint eax, uint edx);
98 public delegate bool WrmsrTxDelegate(uint index, uint eax, uint edx,
99 UIntPtr threadAffinityMask);
101 private static readonly InitializeOlsDelegate InitializeOls =
102 CreateDelegate<InitializeOlsDelegate>("InitializeOls");
103 private static readonly DeinitializeOlsDelegate DeinitializeOls =
104 CreateDelegate<DeinitializeOlsDelegate>("DeinitializeOls");
106 public static readonly IsCpuidDelegate IsCpuid =
107 CreateDelegate<IsCpuidDelegate>("IsCpuid");
108 public static readonly CpuidTxDelegate CpuidTx =
109 CreateDelegate<CpuidTxDelegate>("CpuidTx");
110 public static readonly RdmsrDelegate Rdmsr =
111 CreateDelegate<RdmsrDelegate>("Rdmsr");
112 public static readonly RdmsrTxDelegate RdmsrTx =
113 CreateDelegate<RdmsrTxDelegate>("RdmsrTx");
114 public static readonly ReadIoPortByteDelegate ReadIoPortByte =
115 CreateDelegate<ReadIoPortByteDelegate>("ReadIoPortByte");
116 public static readonly WriteIoPortByteDelegate WriteIoPortByte =
117 CreateDelegate<WriteIoPortByteDelegate>("WriteIoPortByte");
118 public static readonly ReadPciConfigDwordExDelegate ReadPciConfigDwordEx =
119 CreateDelegate<ReadPciConfigDwordExDelegate>("ReadPciConfigDwordEx");
120 public static readonly WritePciConfigDwordExDelegate WritePciConfigDwordEx =
121 CreateDelegate<WritePciConfigDwordExDelegate>("WritePciConfigDwordEx");
122 public static readonly RdtscDelegate Rdtsc =
123 CreateDelegate<RdtscDelegate>("Rdtsc");
124 public static readonly RdtscTxDelegate RdtscTx =
125 CreateDelegate<RdtscTxDelegate>("RdtscTx");
126 public static readonly WrmsrDelegate Wrmsr =
127 CreateDelegate<WrmsrDelegate>("Wrmsr");
128 public static readonly WrmsrTxDelegate WrmsrTx =
129 CreateDelegate<WrmsrTxDelegate>("WrmsrTx");
131 private static T CreateDelegate<T>(string entryPoint) where T : class {
132 DllImportAttribute attribute = new DllImportAttribute(GetDllName());
133 attribute.CallingConvention = CallingConvention.Winapi;
134 attribute.PreserveSig = true;
135 attribute.EntryPoint = entryPoint;
136 attribute.CharSet = CharSet.Auto;
138 PInvokeDelegateFactory.CreateDelegate(attribute, out result);
142 public static void Open() {
144 if (InitializeOls != null && InitializeOls())
146 } catch (DllNotFoundException) { }
148 isaBusMutex = new Mutex(false, "Access_ISABUS.HTP.Method");
151 public static bool IsAvailable {
152 get { return available; }
155 public static void Close() {
161 public static bool WaitIsaBusMutex(int millisecondsTimeout) {
163 return isaBusMutex.WaitOne(millisecondsTimeout, false);
164 } catch (AbandonedMutexException) { return false; }
165 catch (InvalidOperationException) { return false; }
168 public static void ReleaseIsaBusMutex() {
169 isaBusMutex.ReleaseMutex();
172 public const uint InvalidPciAddress = 0xFFFFFFFF;
174 public static uint GetPciAddress(byte bus, byte device, byte function) {
176 (uint)(((bus & 0xFF) << 8) | ((device & 0x1F) << 3) | (function & 7));