Hardware/CPU/AMD0FCPU.cs
author moel.mich
Wed, 03 Nov 2010 22:07:46 +0000
changeset 238 bddc6e01840a
parent 236 763675f19ff4
child 272 037a2d66082f
permissions -rw-r--r--
Added CPUID support for Linux.
     1 /*
     2   
     3   Version: MPL 1.1/GPL 2.0/LGPL 2.1
     4 
     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
     8  
     9   http://www.mozilla.org/MPL/
    10 
    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.
    14 
    15   The Original Code is the Open Hardware Monitor code.
    16 
    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.
    21 
    22   Contributor(s):
    23 
    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.
    35  
    36 */
    37 
    38 using System;
    39 using System.Globalization;
    40 using System.Text;
    41 using System.Threading;
    42 
    43 namespace OpenHardwareMonitor.Hardware.CPU {
    44   internal sealed class AMD0FCPU : AMDCPU {
    45     
    46     private readonly Sensor[] coreTemperatures;
    47     private readonly Sensor[] coreClocks;
    48     private readonly Sensor busClock;
    49 
    50     private const uint FIDVID_STATUS = 0xC0010042;
    51 
    52     private const byte MISCELLANEOUS_CONTROL_FUNCTION = 3;
    53     private const ushort MISCELLANEOUS_CONTROL_DEVICE_ID = 0x1103;
    54     private const uint THERMTRIP_STATUS_REGISTER = 0xE4;
    55     private const byte THERM_SENSE_CORE_SEL_CPU0 = 0x4;
    56     private const byte THERM_SENSE_CORE_SEL_CPU1 = 0x0;
    57 
    58     private readonly uint miscellaneousControlAddress;
    59 
    60     public AMD0FCPU(int processorIndex, CPUID[][] cpuid, ISettings settings)
    61       : base(processorIndex, cpuid, settings) 
    62     {
    63       float offset = -49.0f;
    64 
    65       // AM2+ 65nm +21 offset
    66       uint model = cpuid[0][0].Model;
    67       if (model >= 0x69 && model != 0xc1 && model != 0x6c && model != 0x7c) 
    68         offset += 21;
    69 
    70       // check if processor supports a digital thermal sensor 
    71       if (cpuid[0][0].ExtData.GetLength(0) > 7 && 
    72         (cpuid[0][0].ExtData[7, 3] & 1) != 0) 
    73       {
    74         coreTemperatures = new Sensor[coreCount];
    75         for (int i = 0; i < coreCount; i++) {
    76           coreTemperatures[i] =
    77             new Sensor("Core #" + (i + 1), i, SensorType.Temperature,
    78               this, new [] { new ParameterDescription("Offset [°C]", 
    79                   "Temperature offset of the thermal sensor.\n" + 
    80                   "Temperature = Value + Offset.", offset)
    81           }, settings);
    82         }
    83       } else {
    84         coreTemperatures = new Sensor[0];
    85       }
    86 
    87       miscellaneousControlAddress = GetPciAddress(
    88         MISCELLANEOUS_CONTROL_FUNCTION, MISCELLANEOUS_CONTROL_DEVICE_ID);
    89 
    90       busClock = new Sensor("Bus Speed", 0, SensorType.Clock, this, settings);
    91       coreClocks = new Sensor[coreCount];
    92       for (int i = 0; i < coreClocks.Length; i++) {
    93         coreClocks[i] = new Sensor(CoreString(i), i + 1, SensorType.Clock,
    94           this, settings);
    95         if (HasTimeStampCounter)
    96           ActivateSensor(coreClocks[i]);
    97       }
    98 
    99       Update();                   
   100     }
   101 
   102     protected override uint[] GetMSRs() {
   103       return new [] { FIDVID_STATUS };
   104     }
   105 
   106     public override string GetReport() {
   107       StringBuilder r = new StringBuilder();
   108       r.Append(base.GetReport());
   109 
   110       r.Append("Miscellaneous Control Address: 0x");
   111       r.AppendLine((miscellaneousControlAddress).ToString("X", 
   112         CultureInfo.InvariantCulture));
   113       r.AppendLine();
   114 
   115       return r.ToString();
   116     }
   117 
   118     public override void Update() {
   119       base.Update();
   120 
   121       if (miscellaneousControlAddress != Ring0.InvalidPciAddress) {
   122         for (uint i = 0; i < coreTemperatures.Length; i++) {
   123           if (Ring0.WritePciConfig(
   124             miscellaneousControlAddress, THERMTRIP_STATUS_REGISTER,
   125             i > 0 ? THERM_SENSE_CORE_SEL_CPU1 : THERM_SENSE_CORE_SEL_CPU0)) {
   126             uint value;
   127             if (Ring0.ReadPciConfig(
   128               miscellaneousControlAddress, THERMTRIP_STATUS_REGISTER, 
   129               out value)) 
   130             {
   131               coreTemperatures[i].Value = ((value >> 16) & 0xFF) + 
   132                 coreTemperatures[i].Parameters[0].Value;
   133               ActivateSensor(coreTemperatures[i]);
   134             } else {
   135               DeactivateSensor(coreTemperatures[i]);
   136             }
   137           }
   138         }
   139       }
   140 
   141       if (HasTimeStampCounter) {
   142         double newBusClock = 0;
   143 
   144         for (int i = 0; i < coreClocks.Length; i++) {
   145           Thread.Sleep(1);
   146 
   147           uint eax, edx;
   148           if (Ring0.RdmsrTx(FIDVID_STATUS, out eax, out edx,
   149             1UL << cpuid[i][0].Thread)) {
   150             // CurrFID can be found in eax bits 0-5, MaxFID in 16-21
   151             // 8-13 hold StartFID, we don't use that here.
   152             double curMP = 0.5 * ((eax & 0x3F) + 8);
   153             double maxMP = 0.5 * ((eax >> 16 & 0x3F) + 8);
   154             coreClocks[i].Value = 
   155               (float)(curMP * TimeStampCounterFrequency / maxMP);
   156             newBusClock = (float)(TimeStampCounterFrequency / maxMP);
   157           } else {
   158             // Fail-safe value - if the code above fails, we'll use this instead
   159             coreClocks[i].Value = (float)TimeStampCounterFrequency;
   160           }
   161         }
   162 
   163         if (newBusClock > 0) {
   164           this.busClock.Value = (float)newBusClock;
   165           ActivateSensor(this.busClock);
   166         }
   167       }
   168     }  
   169  
   170   }
   171 }