Hardware/CPU/AMD0FCPU.cs
author moel.mich
Wed, 17 Feb 2010 20:22:21 +0000
changeset 49 b418098ceca3
parent 31 c4d1fb76a9e1
child 50 7d83a09511f0
permissions -rw-r--r--
Better core and thread number identification. Fixed clock reading on Intel Atom CPUs. New reporting of MSR values for Intel CPUs.
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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.Collections.Generic;
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using System.Drawing;
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using System.Diagnostics;
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using System.Text;
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namespace OpenHardwareMonitor.Hardware.CPU {
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  public class AMD0FCPU : Hardware, IHardware {
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    private string name;
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    private Image icon;
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    private uint pciAddress;
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    private Sensor[] coreTemperatures;
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    private float offset;
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    private Sensor totalLoad;
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    private Sensor[] coreLoads;
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    private CPULoad cpuLoad;
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    private const ushort PCI_AMD_VENDOR_ID = 0x1022;
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    private const ushort PCI_AMD_0FH_MISCELLANEOUS_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 = 0x2;
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    private const byte THERM_SENSE_CORE_SEL_CPU1 = 0x0;
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    public AMD0FCPU(string name, uint family, uint model, uint stepping, 
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      uint[,] cpuidData, uint[,] cpuidExtData) {
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      this.name = name;
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      this.icon = Utilities.EmbeddedResources.GetImage("cpu.png");     
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      uint coreCount = 1;
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      if (cpuidExtData.GetLength(0) > 8)
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        coreCount = (cpuidExtData[8, 2] & 0xFF) + 1;
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      // max two cores
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      coreCount = coreCount > 2 ? 2 : coreCount;
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      totalLoad = new Sensor("CPU Total", 0, SensorType.Load, this);
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      coreTemperatures = new Sensor[coreCount];
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      coreLoads = 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, this);
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        coreLoads[i] = new Sensor("Core #" + (i + 1), i + 1,
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          SensorType.Load, this);
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      }
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      cpuLoad = new CPULoad(coreCount, 1);
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      if (cpuLoad.IsAvailable) {
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        foreach (Sensor sensor in coreLoads)
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          ActivateSensor(sensor);
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        ActivateSensor(totalLoad);
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      }
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      pciAddress = WinRing0.FindPciDeviceById(PCI_AMD_VENDOR_ID,
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        PCI_AMD_0FH_MISCELLANEOUS_DEVICE_ID, 0);
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      offset = -49.0f;
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      // AM2+ 65nm +21 offset
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      if (model >= 0x69 && model != 0xc1 && model != 0x6c && model != 0x7c) 
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        offset += 21;
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      Update();                   
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    }
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    public string Name {
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      get { return name; }
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    }
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    public string Identifier {
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      get { return "/amdcpu/0"; }
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    }
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    public Image Icon {
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      get { return icon; }
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    }
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    public string GetReport() {
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      return null;
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    }
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    public void Update() {
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      if (pciAddress != 0xFFFFFFFF) {
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        for (uint i = 0; i < coreTemperatures.Length; i++) {
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          if (WinRing0.WritePciConfigDwordEx(
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            pciAddress, 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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              pciAddress, THERMTRIP_STATUS_REGISTER, out value)) {
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              coreTemperatures[i].Value = ((value >> 16) & 0xFF) + offset;
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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 (cpuLoad.IsAvailable) {
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        cpuLoad.Update();
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        for (int i = 0; i < coreLoads.Length; i++)
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          coreLoads[i].Value = cpuLoad.GetCoreLoad(i);
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        totalLoad.Value = cpuLoad.GetTotalLoad();
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      }
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    }   
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  }
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}