Hardware/Nvidia/NvidiaGPU.cs
author moel.mich
Wed, 17 Feb 2010 20:22:21 +0000
changeset 49 b418098ceca3
parent 1 361e324a0ed4
child 56 5cb7eb5bf628
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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namespace OpenHardwareMonitor.Hardware.Nvidia {
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  public class NvidiaGPU : Hardware, IHardware {
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    private string name;
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    private Image icon;
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    private int adapterIndex;
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    private NvPhysicalGpuHandle handle;
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    private Sensor[] temperatures;
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    private Sensor fan = null;
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    private bool available;
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    public NvidiaGPU(int adapterIndex, NvPhysicalGpuHandle handle) {
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      try {
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        string gpuName;
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        if (NVAPI.NvAPI_GPU_GetFullName(handle, out gpuName) == NvStatus.OK) {
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          this.name = "NVIDIA " + gpuName.Trim();
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        } else {
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          this.name = "NVIDIA";
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        }
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        this.icon = Utilities.EmbeddedResources.GetImage("nvidia.png");
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        this.adapterIndex = adapterIndex;
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        this.handle = handle;
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        NvGPUThermalSettings settings = GetThermalSettings();
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        temperatures = new Sensor[settings.Count];
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        for (int i = 0; i < temperatures.Length; i++) {
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          NvSensor sensor = settings.Sensor[i];
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          string name;
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          switch (sensor.Target) {
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            case NvThermalTarget.BOARD: name = "GPU Board"; break;
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            case NvThermalTarget.GPU: name = "GPU Core"; break;
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            case NvThermalTarget.MEMORY: name = "GPU Memory"; break;
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            case NvThermalTarget.POWER_SUPPLY: name = "GPU Power Supply"; break;
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            case NvThermalTarget.UNKNOWN: name = "GPU Unknown"; break;
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            default: name = "GPU"; break;
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          }
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          temperatures[i] = new Sensor(name, i, sensor.DefaultMaxTemp, 
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            SensorType.Temperature, this);
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          ActivateSensor(temperatures[i]);
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        }
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        int value;
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        if (NVAPI.NvAPI_GPU_GetTachReading != null &&
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          NVAPI.NvAPI_GPU_GetTachReading(handle, out value) == NvStatus.OK) {
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          if (value > 0) {
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            fan = new Sensor("GPU", 0, SensorType.Fan, this);
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            ActivateSensor(fan);
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          }
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        }
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        available = temperatures.Length > 0 || fan != null;
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      } catch (Exception e) {
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        System.Windows.Forms.MessageBox.Show(e.Message + "\n" + e.StackTrace);
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      }
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    }
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    public bool IsAvailable {
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      get { return available; }
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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 "/nvidiagpu/" + adapterIndex; }
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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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    private NvGPUThermalSettings GetThermalSettings() {
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      NvGPUThermalSettings settings = new NvGPUThermalSettings();
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      settings.Version = NVAPI.GPU_THERMAL_SETTINGS_VER;
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      settings.Count = NVAPI.MAX_THERMAL_SENSORS_PER_GPU;
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      settings.Sensor = new NvSensor[NVAPI.MAX_THERMAL_SENSORS_PER_GPU];
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      if (NVAPI.NvAPI_GPU_GetThermalSettings(handle, (int)NvThermalTarget.ALL,
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        ref settings) != NvStatus.OK) {
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        settings.Count = 0;        
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      }
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      return settings;
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    }
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    public void Update() {
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      NvGPUThermalSettings settings = GetThermalSettings();
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      foreach (Sensor sensor in temperatures) 
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        sensor.Value = settings.Sensor[sensor.Index].CurrentTemp;
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      if (fan != null) {
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        int value = 0;
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        NVAPI.NvAPI_GPU_GetTachReading(handle, out value);
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        fan.Value = value;
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      }
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    }
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  }
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}