Hardware/CPU/AMD0FCPU.cs
author moel.mich
Thu, 30 Sep 2010 20:59:21 +0000
changeset 202 551243a66b32
parent 197 fb66f749b7ff
child 236 763675f19ff4
permissions -rw-r--r--
Fixed some problems when compiling in Mono and running on Linux.
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/*
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  Version: MPL 1.1/GPL 2.0/LGPL 2.1
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  The contents of this file are subject to the Mozilla Public License Version
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  1.1 (the "License"); you may not use this file except in compliance with
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  the License. You may obtain a copy of the License at
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  http://www.mozilla.org/MPL/
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  Software distributed under the License is distributed on an "AS IS" basis,
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  WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  for the specific language governing rights and limitations under the License.
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  The Original Code is the Open Hardware Monitor code.
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  The Initial Developer of the Original Code is 
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  Michael Möller <m.moeller@gmx.ch>.
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  Portions created by the Initial Developer are Copyright (C) 2009-2010
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  the Initial Developer. All Rights Reserved.
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  Contributor(s):
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  Alternatively, the contents of this file may be used under the terms of
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  either the GNU General Public License Version 2 or later (the "GPL"), or
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  the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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  in which case the provisions of the GPL or the LGPL are applicable instead
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  of those above. If you wish to allow use of your version of this file only
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  under the terms of either the GPL or the LGPL, and not to allow others to
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  use your version of this file under the terms of the MPL, indicate your
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  decision by deleting the provisions above and replace them with the notice
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  and other provisions required by the GPL or the LGPL. If you do not delete
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  the provisions above, a recipient may use your version of this file under
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  the terms of any one of the MPL, the GPL or the LGPL.
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*/
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using System;
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using System.Globalization;
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using System.Text;
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using System.Threading;
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namespace OpenHardwareMonitor.Hardware.CPU {
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  internal sealed class AMD0FCPU : AMDCPU {
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    private readonly Sensor[] coreTemperatures;
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    private readonly Sensor[] coreClocks;
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    private readonly Sensor busClock;
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    private const uint FIDVID_STATUS = 0xC0010042;
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    private const byte MISCELLANEOUS_CONTROL_FUNCTION = 3;
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    private const ushort MISCELLANEOUS_CONTROL_DEVICE_ID = 0x1103;
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    private const uint THERMTRIP_STATUS_REGISTER = 0xE4;
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    private const byte THERM_SENSE_CORE_SEL_CPU0 = 0x4;
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    private const byte THERM_SENSE_CORE_SEL_CPU1 = 0x0;
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    private readonly uint miscellaneousControlAddress;
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    public AMD0FCPU(int processorIndex, CPUID[][] cpuid, ISettings settings)
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      : base(processorIndex, cpuid, settings) 
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    {
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      float offset = -49.0f;
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      // AM2+ 65nm +21 offset
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      uint model = cpuid[0][0].Model;
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      if (model >= 0x69 && model != 0xc1 && model != 0x6c && model != 0x7c) 
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        offset += 21;
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      // check if processor supports a digital thermal sensor 
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      if (cpuid[0][0].ExtData.GetLength(0) > 7 && 
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        (cpuid[0][0].ExtData[7, 3] & 1) != 0) 
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      {
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        coreTemperatures = new Sensor[coreCount];
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        for (int i = 0; i < coreCount; i++) {
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          coreTemperatures[i] =
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            new Sensor("Core #" + (i + 1), i, SensorType.Temperature,
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              this, new [] { new ParameterDescription("Offset [°C]", 
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                  "Temperature offset of the thermal sensor.\n" + 
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                  "Temperature = Value + Offset.", offset)
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          }, settings);
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        }
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      } else {
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        coreTemperatures = new Sensor[0];
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      }
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      miscellaneousControlAddress = GetPciAddress(
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        MISCELLANEOUS_CONTROL_FUNCTION, MISCELLANEOUS_CONTROL_DEVICE_ID);
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      busClock = new Sensor("Bus Speed", 0, SensorType.Clock, this, settings);
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      coreClocks = new Sensor[coreCount];
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      for (int i = 0; i < coreClocks.Length; i++) {
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        coreClocks[i] = new Sensor(CoreString(i), i + 1, SensorType.Clock,
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          this, settings);
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        if (HasTimeStampCounter)
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          ActivateSensor(coreClocks[i]);
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      }
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      Update();                   
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    }
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    protected override uint[] GetMSRs() {
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      return new [] { FIDVID_STATUS };
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    }
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    public override string GetReport() {
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      StringBuilder r = new StringBuilder();
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      r.Append(base.GetReport());
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      r.Append("Miscellaneous Control Address: 0x");
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      r.AppendLine((miscellaneousControlAddress).ToString("X", 
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        CultureInfo.InvariantCulture));
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      r.AppendLine();
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      return r.ToString();
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    }
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    public override void Update() {
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      base.Update();
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      if (miscellaneousControlAddress != WinRing0.InvalidPciAddress) {
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        for (uint i = 0; i < coreTemperatures.Length; i++) {
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          if (WinRing0.WritePciConfigDwordEx(
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            miscellaneousControlAddress, THERMTRIP_STATUS_REGISTER,
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            i > 0 ? THERM_SENSE_CORE_SEL_CPU1 : THERM_SENSE_CORE_SEL_CPU0)) {
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            uint value;
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            if (WinRing0.ReadPciConfigDwordEx(
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              miscellaneousControlAddress, THERMTRIP_STATUS_REGISTER, 
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              out value)) 
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            {
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              coreTemperatures[i].Value = ((value >> 16) & 0xFF) + 
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                coreTemperatures[i].Parameters[0].Value;
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              ActivateSensor(coreTemperatures[i]);
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            } else {
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              DeactivateSensor(coreTemperatures[i]);
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            }
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          }
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        }
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      }
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      if (HasTimeStampCounter) {
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        double newBusClock = 0;
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        for (int i = 0; i < coreClocks.Length; i++) {
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          Thread.Sleep(1);
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          uint eax, edx;
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          if (WinRing0.RdmsrTx(FIDVID_STATUS, out eax, out edx,
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            (UIntPtr)(1L << cpuid[i][0].Thread))) {
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            // CurrFID can be found in eax bits 0-5, MaxFID in 16-21
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            // 8-13 hold StartFID, we don't use that here.
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            double curMP = 0.5 * ((eax & 0x3F) + 8);
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            double maxMP = 0.5 * ((eax >> 16 & 0x3F) + 8);
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            coreClocks[i].Value = 
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              (float)(curMP * TimeStampCounterFrequency / maxMP);
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            newBusClock = (float)(TimeStampCounterFrequency / maxMP);
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          } else {
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            // Fail-safe value - if the code above fails, we'll use this instead
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            coreClocks[i].Value = (float)TimeStampCounterFrequency;
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          }
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        }
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        if (newBusClock > 0) {
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          this.busClock.Value = (float)newBusClock;
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          ActivateSensor(this.busClock);
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        }
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      }
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    }  
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  }
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}