moel@1: /*
moel@1:  
moel@344:   This Source Code Form is subject to the terms of the Mozilla Public
moel@344:   License, v. 2.0. If a copy of the MPL was not distributed with this
moel@344:   file, You can obtain one at http://mozilla.org/MPL/2.0/.
moel@344:  
moel@344:   Copyright (C) 2009-2012 Michael Möller <mmoeller@openhardwaremonitor.org>
moel@344: 	Copyright (C) 2011 Christian Vallières
moel@1:  
moel@1: */
moel@1: 
moel@1: using System;
moel@166: using System.Globalization;
moel@140: using System.Text;
moel@1: 
moel@1: namespace OpenHardwareMonitor.Hardware.Nvidia {
moel@195:   internal class NvidiaGPU : Hardware {
moel@1: 
moel@195:     private readonly int adapterIndex;
moel@195:     private readonly NvPhysicalGpuHandle handle;
moel@195:     private readonly NvDisplayHandle? displayHandle;
moel@1: 
moel@195:     private readonly Sensor[] temperatures;
moel@195:     private readonly Sensor fan;
moel@195:     private readonly Sensor[] clocks;
moel@195:     private readonly Sensor[] loads;
moel@195:     private readonly Sensor control;
moel@195:     private readonly Sensor memoryLoad;
moel@309:     private readonly Control fanControl;
moel@38: 
moel@309:     private bool restoreDefaultFanSpeedRequired;
moel@309:     private NvLevel initialFanSpeedValue;
moel@309: 
moel@309:     public NvidiaGPU(int adapterIndex, NvPhysicalGpuHandle handle,
moel@309:       NvDisplayHandle? displayHandle, ISettings settings)
moel@309:       : base(GetName(handle), new Identifier("nvidiagpu",
moel@309:           adapterIndex.ToString(CultureInfo.InvariantCulture)), settings) {
moel@56:       this.adapterIndex = adapterIndex;
moel@56:       this.handle = handle;
moel@140:       this.displayHandle = displayHandle;
moel@1: 
moel@165:       NvGPUThermalSettings thermalSettings = GetThermalSettings();
moel@165:       temperatures = new Sensor[thermalSettings.Count];
moel@56:       for (int i = 0; i < temperatures.Length; i++) {
moel@165:         NvSensor sensor = thermalSettings.Sensor[i];
moel@56:         string name;
moel@56:         switch (sensor.Target) {
moel@56:           case NvThermalTarget.BOARD: name = "GPU Board"; break;
moel@56:           case NvThermalTarget.GPU: name = "GPU Core"; break;
moel@56:           case NvThermalTarget.MEMORY: name = "GPU Memory"; break;
moel@56:           case NvThermalTarget.POWER_SUPPLY: name = "GPU Power Supply"; break;
moel@56:           case NvThermalTarget.UNKNOWN: name = "GPU Unknown"; break;
moel@56:           default: name = "GPU"; break;
moel@38:         }
moel@165:         temperatures[i] = new Sensor(name, i, SensorType.Temperature, this,
moel@165:           new ParameterDescription[0], settings);
moel@56:         ActivateSensor(temperatures[i]);
moel@56:       }
moel@1: 
moel@56:       int value;
moel@56:       if (NVAPI.NvAPI_GPU_GetTachReading != null &&
moel@56:         NVAPI.NvAPI_GPU_GetTachReading(handle, out value) == NvStatus.OK) {
moel@56:         if (value > 0) {
moel@165:           fan = new Sensor("GPU", 0, SensorType.Fan, this, settings);
moel@56:           ActivateSensor(fan);
moel@1:         }
moel@1:       }
moel@140: 
moel@140:       clocks = new Sensor[3];
moel@165:       clocks[0] = new Sensor("GPU Core", 0, SensorType.Clock, this, settings);
moel@165:       clocks[1] = new Sensor("GPU Memory", 1, SensorType.Clock, this, settings);
moel@165:       clocks[2] = new Sensor("GPU Shader", 2, SensorType.Clock, this, settings);
moel@140:       for (int i = 0; i < clocks.Length; i++)
moel@140:         ActivateSensor(clocks[i]);
moel@140: 
moel@140:       loads = new Sensor[3];
moel@165:       loads[0] = new Sensor("GPU Core", 0, SensorType.Load, this, settings);
moel@165:       loads[1] = new Sensor("GPU Memory Controller", 1, SensorType.Load, this, settings);
moel@165:       loads[2] = new Sensor("GPU Video Engine", 2, SensorType.Load, this, settings);
moel@165:       memoryLoad = new Sensor("GPU Memory", 3, SensorType.Load, this, settings);
moel@140: 
moel@165:       control = new Sensor("GPU Fan", 0, SensorType.Control, this, settings);
moel@309: 
moel@309:       NvGPUCoolerSettings coolerSettings = GetCoolerSettings();
moel@309:       if (coolerSettings.Count > 0) {
moel@309:         fanControl = new Control(control, settings,
moel@309:           coolerSettings.Cooler[0].DefaultMin, 
moel@309:           coolerSettings.Cooler[0].DefaultMax);
moel@309:         fanControl.ControlModeChanged += ControlModeChanged;
moel@309:         fanControl.SoftwareControlValueChanged += SoftwareControlValueChanged;
moel@309:         ControlModeChanged(fanControl);
moel@309:         control.Control = fanControl;
moel@309:       }
moel@309:       Update();
moel@1:     }
moel@1: 
moel@275:     private static string GetName(NvPhysicalGpuHandle handle) {
moel@275:       string gpuName;
moel@275:       if (NVAPI.NvAPI_GPU_GetFullName(handle, out gpuName) == NvStatus.OK) {
moel@275:         return "NVIDIA " + gpuName.Trim();
moel@275:       } else {
moel@275:         return "NVIDIA";
moel@166:       }
moel@1:     }
moel@1: 
moel@165:     public override HardwareType HardwareType {
moel@176:       get { return HardwareType.GpuNvidia; }
moel@1:     }
moel@1: 
moel@1:     private NvGPUThermalSettings GetThermalSettings() {
moel@1:       NvGPUThermalSettings settings = new NvGPUThermalSettings();
moel@1:       settings.Version = NVAPI.GPU_THERMAL_SETTINGS_VER;
moel@1:       settings.Count = NVAPI.MAX_THERMAL_SENSORS_PER_GPU;
moel@1:       settings.Sensor = new NvSensor[NVAPI.MAX_THERMAL_SENSORS_PER_GPU];
moel@309:       if (!(NVAPI.NvAPI_GPU_GetThermalSettings != null &&
moel@140:         NVAPI.NvAPI_GPU_GetThermalSettings(handle, (int)NvThermalTarget.ALL,
moel@309:           ref settings) == NvStatus.OK)) 
moel@309:       {
moel@309:         settings.Count = 0;
moel@309:       }       
moel@309:       return settings;    
moel@309:     }
moel@309: 
moel@309:     private NvGPUCoolerSettings GetCoolerSettings() {
moel@309:       NvGPUCoolerSettings settings = new NvGPUCoolerSettings();
moel@309:       settings.Version = NVAPI.GPU_COOLER_SETTINGS_VER;
moel@309:       settings.Cooler = new NvCooler[NVAPI.MAX_COOLER_PER_GPU];
moel@309:       if (!(NVAPI.NvAPI_GPU_GetCoolerSettings != null &&
moel@309:         NVAPI.NvAPI_GPU_GetCoolerSettings(handle, 0, 
moel@309:           ref settings) == NvStatus.OK)) 
moel@309:       {
moel@309:         settings.Count = 0;
moel@38:       }
moel@309:       return settings;  
moel@1:     }
moel@1: 
moel@140:     private uint[] GetClocks() {
moel@166:       NvClocks allClocks = new NvClocks();
moel@166:       allClocks.Version = NVAPI.GPU_CLOCKS_VER;
moel@166:       allClocks.Clock = new uint[NVAPI.MAX_CLOCKS_PER_GPU];
moel@140:       if (NVAPI.NvAPI_GPU_GetAllClocks != null &&
moel@166:         NVAPI.NvAPI_GPU_GetAllClocks(handle, ref allClocks) == NvStatus.OK) {
moel@166:         return allClocks.Clock;
moel@140:       }
moel@140:       return null;
moel@140:     }
moel@140: 
moel@110:     public override void Update() {
moel@1:       NvGPUThermalSettings settings = GetThermalSettings();
moel@309:       foreach (Sensor sensor in temperatures)
moel@38:         sensor.Value = settings.Sensor[sensor.Index].CurrentTemp;
moel@38: 
moel@38:       if (fan != null) {
moel@38:         int value = 0;
moel@38:         NVAPI.NvAPI_GPU_GetTachReading(handle, out value);
moel@38:         fan.Value = value;
moel@38:       }
moel@140: 
moel@140:       uint[] values = GetClocks();
moel@140:       if (values != null) {
moel@140:         clocks[0].Value = 0.001f * values[0];
moel@140:         clocks[1].Value = 0.001f * values[8];
moel@140:         clocks[2].Value = 0.001f * values[14];
moel@140:         if (values[30] != 0) {
moel@140:           clocks[0].Value = 0.0005f * values[30];
moel@140:           clocks[2].Value = 0.001f * values[30];
moel@140:         }
moel@140:       }
moel@140: 
moel@140:       NvPStates states = new NvPStates();
moel@140:       states.Version = NVAPI.GPU_PSTATES_VER;
moel@140:       states.PStates = new NvPState[NVAPI.MAX_PSTATES_PER_GPU];
moel@309:       if (NVAPI.NvAPI_GPU_GetPStates != null &&
moel@140:         NVAPI.NvAPI_GPU_GetPStates(handle, ref states) == NvStatus.OK) {
moel@140:         for (int i = 0; i < 3; i++)
moel@140:           if (states.PStates[i].Present) {
moel@140:             loads[i].Value = states.PStates[i].Percentage;
moel@140:             ActivateSensor(loads[i]);
moel@140:           }
moel@140:       } else {
moel@140:         NvUsages usages = new NvUsages();
moel@140:         usages.Version = NVAPI.GPU_USAGES_VER;
moel@140:         usages.Usage = new uint[NVAPI.MAX_USAGES_PER_GPU];
moel@140:         if (NVAPI.NvAPI_GPU_GetUsages != null &&
moel@140:           NVAPI.NvAPI_GPU_GetUsages(handle, ref usages) == NvStatus.OK) {
moel@140:           loads[0].Value = usages.Usage[2];
moel@140:           loads[1].Value = usages.Usage[6];
moel@140:           loads[2].Value = usages.Usage[10];
moel@140:           for (int i = 0; i < 3; i++)
moel@140:             ActivateSensor(loads[i]);
moel@140:         }
moel@140:       }
moel@140: 
moel@309: 
moel@309:       NvGPUCoolerSettings coolerSettings = GetCoolerSettings();
moel@309:       if (coolerSettings.Count > 0) {
moel@140:         control.Value = coolerSettings.Cooler[0].CurrentLevel;
moel@140:         ActivateSensor(control);
moel@140:       }
moel@140: 
moel@140:       NvMemoryInfo memoryInfo = new NvMemoryInfo();
moel@140:       memoryInfo.Version = NVAPI.GPU_MEMORY_INFO_VER;
moel@140:       memoryInfo.Values = new uint[NVAPI.MAX_MEMORY_VALUES_PER_GPU];
moel@140:       if (NVAPI.NvAPI_GPU_GetMemoryInfo != null && displayHandle.HasValue &&
moel@309:         NVAPI.NvAPI_GPU_GetMemoryInfo(displayHandle.Value, ref memoryInfo) ==
moel@309:         NvStatus.OK) {
moel@140:         uint totalMemory = memoryInfo.Values[0];
moel@140:         uint freeMemory = memoryInfo.Values[4];
moel@140:         float usedMemory = Math.Max(totalMemory - freeMemory, 0);
moel@140:         memoryLoad.Value = 100f * usedMemory / totalMemory;
moel@140:         ActivateSensor(memoryLoad);
moel@140:       }
moel@140:     }
moel@140: 
moel@140:     public override string GetReport() {
moel@140:       StringBuilder r = new StringBuilder();
moel@140: 
moel@140:       r.AppendLine("Nvidia GPU");
moel@140:       r.AppendLine();
moel@140: 
moel@140:       r.AppendFormat("Name: {0}{1}", name, Environment.NewLine);
moel@140:       r.AppendFormat("Index: {0}{1}", adapterIndex, Environment.NewLine);
moel@309: 
moel@309:       if (displayHandle.HasValue && NVAPI.NvAPI_GetDisplayDriverVersion != null) {
moel@140:         NvDisplayDriverVersion driverVersion = new NvDisplayDriverVersion();
moel@140:         driverVersion.Version = NVAPI.DISPLAY_DRIVER_VERSION_VER;
moel@140:         if (NVAPI.NvAPI_GetDisplayDriverVersion(displayHandle.Value,
moel@140:           ref driverVersion) == NvStatus.OK) {
moel@140:           r.Append("Driver Version: ");
moel@140:           r.Append(driverVersion.DriverVersion / 100);
moel@140:           r.Append(".");
moel@309:           r.Append((driverVersion.DriverVersion % 100).ToString("00",
moel@167:             CultureInfo.InvariantCulture));
moel@140:           r.AppendLine();
moel@140:           r.Append("Driver Branch: ");
moel@140:           r.AppendLine(driverVersion.BuildBranch);
moel@140:         }
moel@140:       }
moel@140:       r.AppendLine();
moel@140: 
moel@334:       if (NVAPI.NvAPI_GPU_GetPCIIdentifiers != null) {
moel@334:         uint deviceId, subSystemId, revisionId, extDeviceId;
moel@334: 
moel@334:         NvStatus status = NVAPI.NvAPI_GPU_GetPCIIdentifiers(handle, 
moel@334:           out deviceId, out subSystemId, out revisionId, out extDeviceId);
moel@334: 
moel@334:         if (status == NvStatus.OK) {
moel@334:           r.Append("DeviceID: 0x");
moel@334:           r.AppendLine(deviceId.ToString("X", CultureInfo.InvariantCulture));
moel@334:           r.Append("SubSystemID: 0x");
moel@334:           r.AppendLine(subSystemId.ToString("X", CultureInfo.InvariantCulture));
moel@334:           r.Append("RevisionID: 0x");
moel@334:           r.AppendLine(revisionId.ToString("X", CultureInfo.InvariantCulture));
moel@334:           r.Append("ExtDeviceID: 0x");
moel@334:           r.AppendLine(extDeviceId.ToString("X", CultureInfo.InvariantCulture));
moel@334:           r.AppendLine();
moel@334:         }
moel@334:       }
moel@334: 
moel@140:       if (NVAPI.NvAPI_GPU_GetThermalSettings != null) {
moel@140:         NvGPUThermalSettings settings = new NvGPUThermalSettings();
moel@140:         settings.Version = NVAPI.GPU_THERMAL_SETTINGS_VER;
moel@140:         settings.Count = NVAPI.MAX_THERMAL_SENSORS_PER_GPU;
moel@140:         settings.Sensor = new NvSensor[NVAPI.MAX_THERMAL_SENSORS_PER_GPU];
moel@140: 
moel@140:         NvStatus status = NVAPI.NvAPI_GPU_GetThermalSettings(handle,
moel@140:           (int)NvThermalTarget.ALL, ref settings);
moel@140: 
moel@140:         r.AppendLine("Thermal Settings");
moel@140:         r.AppendLine();
moel@140:         if (status == NvStatus.OK) {
moel@140:           for (int i = 0; i < settings.Count; i++) {
moel@140:             r.AppendFormat(" Sensor[{0}].Controller: {1}{2}", i,
moel@140:               settings.Sensor[i].Controller, Environment.NewLine);
moel@140:             r.AppendFormat(" Sensor[{0}].DefaultMinTemp: {1}{2}", i,
moel@140:               settings.Sensor[i].DefaultMinTemp, Environment.NewLine);
moel@140:             r.AppendFormat(" Sensor[{0}].DefaultMaxTemp: {1}{2}", i,
moel@140:               settings.Sensor[i].DefaultMaxTemp, Environment.NewLine);
moel@140:             r.AppendFormat(" Sensor[{0}].CurrentTemp: {1}{2}", i,
moel@140:               settings.Sensor[i].CurrentTemp, Environment.NewLine);
moel@140:             r.AppendFormat(" Sensor[{0}].Target: {1}{2}", i,
moel@140:               settings.Sensor[i].Target, Environment.NewLine);
moel@140:           }
moel@140:         } else {
moel@140:           r.Append(" Status: ");
moel@140:           r.AppendLine(status.ToString());
moel@140:         }
moel@140:         r.AppendLine();
moel@309:       }
moel@140: 
moel@140:       if (NVAPI.NvAPI_GPU_GetAllClocks != null) {
moel@166:         NvClocks allClocks = new NvClocks();
moel@166:         allClocks.Version = NVAPI.GPU_CLOCKS_VER;
moel@166:         allClocks.Clock = new uint[NVAPI.MAX_CLOCKS_PER_GPU];
moel@166:         NvStatus status = NVAPI.NvAPI_GPU_GetAllClocks(handle, ref allClocks);
moel@140: 
moel@140:         r.AppendLine("Clocks");
moel@140:         r.AppendLine();
moel@140:         if (status == NvStatus.OK) {
moel@166:           for (int i = 0; i < allClocks.Clock.Length; i++)
moel@166:             if (allClocks.Clock[i] > 0) {
moel@166:               r.AppendFormat(" Clock[{0}]: {1}{2}", i, allClocks.Clock[i],
moel@140:                 Environment.NewLine);
moel@140:             }
moel@140:         } else {
moel@140:           r.Append(" Status: ");
moel@140:           r.AppendLine(status.ToString());
moel@140:         }
moel@140:         r.AppendLine();
moel@309:       }
moel@309: 
moel@140:       if (NVAPI.NvAPI_GPU_GetTachReading != null) {
moel@309:         int tachValue;
moel@140:         NvStatus status = NVAPI.NvAPI_GPU_GetTachReading(handle, out tachValue);
moel@140: 
moel@140:         r.AppendLine("Tachometer");
moel@140:         r.AppendLine();
moel@140:         if (status == NvStatus.OK) {
moel@140:           r.AppendFormat(" Value: {0}{1}", tachValue, Environment.NewLine);
moel@140:         } else {
moel@140:           r.Append(" Status: ");
moel@140:           r.AppendLine(status.ToString());
moel@140:         }
moel@140:         r.AppendLine();
moel@140:       }
moel@140: 
moel@140:       if (NVAPI.NvAPI_GPU_GetPStates != null) {
moel@140:         NvPStates states = new NvPStates();
moel@140:         states.Version = NVAPI.GPU_PSTATES_VER;
moel@140:         states.PStates = new NvPState[NVAPI.MAX_PSTATES_PER_GPU];
moel@140:         NvStatus status = NVAPI.NvAPI_GPU_GetPStates(handle, ref states);
moel@140: 
moel@140:         r.AppendLine("P-States");
moel@140:         r.AppendLine();
moel@140:         if (status == NvStatus.OK) {
moel@140:           for (int i = 0; i < states.PStates.Length; i++)
moel@140:             if (states.PStates[i].Present)
moel@140:               r.AppendFormat(" Percentage[{0}]: {1}{2}", i,
moel@140:                 states.PStates[i].Percentage, Environment.NewLine);
moel@140:         } else {
moel@140:           r.Append(" Status: ");
moel@140:           r.AppendLine(status.ToString());
moel@140:         }
moel@140:         r.AppendLine();
moel@140:       }
moel@140: 
moel@140:       if (NVAPI.NvAPI_GPU_GetUsages != null) {
moel@140:         NvUsages usages = new NvUsages();
moel@140:         usages.Version = NVAPI.GPU_USAGES_VER;
moel@140:         usages.Usage = new uint[NVAPI.MAX_USAGES_PER_GPU];
moel@140:         NvStatus status = NVAPI.NvAPI_GPU_GetUsages(handle, ref usages);
moel@309: 
moel@140:         r.AppendLine("Usages");
moel@140:         r.AppendLine();
moel@140:         if (status == NvStatus.OK) {
moel@140:           for (int i = 0; i < usages.Usage.Length; i++)
moel@140:             if (usages.Usage[i] > 0)
moel@140:               r.AppendFormat(" Usage[{0}]: {1}{2}", i,
moel@140:                 usages.Usage[i], Environment.NewLine);
moel@140:         } else {
moel@140:           r.Append(" Status: ");
moel@140:           r.AppendLine(status.ToString());
moel@140:         }
moel@140:         r.AppendLine();
moel@140:       }
moel@140: 
moel@140:       if (NVAPI.NvAPI_GPU_GetCoolerSettings != null) {
moel@140:         NvGPUCoolerSettings settings = new NvGPUCoolerSettings();
moel@140:         settings.Version = NVAPI.GPU_COOLER_SETTINGS_VER;
moel@140:         settings.Cooler = new NvCooler[NVAPI.MAX_COOLER_PER_GPU];
moel@140:         NvStatus status =
moel@140:           NVAPI.NvAPI_GPU_GetCoolerSettings(handle, 0, ref settings);
moel@140: 
moel@140:         r.AppendLine("Cooler Settings");
moel@140:         r.AppendLine();
moel@140:         if (status == NvStatus.OK) {
moel@140:           for (int i = 0; i < settings.Count; i++) {
moel@140:             r.AppendFormat(" Cooler[{0}].Type: {1}{2}", i,
moel@140:               settings.Cooler[i].Type, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].Controller: {1}{2}", i,
moel@140:               settings.Cooler[i].Controller, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].DefaultMin: {1}{2}", i,
moel@140:               settings.Cooler[i].DefaultMin, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].DefaultMax: {1}{2}", i,
moel@140:               settings.Cooler[i].DefaultMax, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].CurrentMin: {1}{2}", i,
moel@140:               settings.Cooler[i].CurrentMin, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].CurrentMax: {1}{2}", i,
moel@140:               settings.Cooler[i].CurrentMax, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].CurrentLevel: {1}{2}", i,
moel@140:               settings.Cooler[i].CurrentLevel, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].DefaultPolicy: {1}{2}", i,
moel@140:               settings.Cooler[i].DefaultPolicy, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].CurrentPolicy: {1}{2}", i,
moel@140:               settings.Cooler[i].CurrentPolicy, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].Target: {1}{2}", i,
moel@140:               settings.Cooler[i].Target, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].ControlType: {1}{2}", i,
moel@140:               settings.Cooler[i].ControlType, Environment.NewLine);
moel@140:             r.AppendFormat(" Cooler[{0}].Active: {1}{2}", i,
moel@140:               settings.Cooler[i].Active, Environment.NewLine);
moel@140:           }
moel@140:         } else {
moel@140:           r.Append(" Status: ");
moel@140:           r.AppendLine(status.ToString());
moel@140:         }
moel@140:         r.AppendLine();
moel@140:       }
moel@140: 
moel@140:       if (NVAPI.NvAPI_GPU_GetMemoryInfo != null && displayHandle.HasValue) {
moel@140:         NvMemoryInfo memoryInfo = new NvMemoryInfo();
moel@140:         memoryInfo.Version = NVAPI.GPU_MEMORY_INFO_VER;
moel@140:         memoryInfo.Values = new uint[NVAPI.MAX_MEMORY_VALUES_PER_GPU];
moel@309:         NvStatus status = NVAPI.NvAPI_GPU_GetMemoryInfo(displayHandle.Value,
moel@140:           ref memoryInfo);
moel@140: 
moel@140:         r.AppendLine("Memory Info");
moel@140:         r.AppendLine();
moel@140:         if (status == NvStatus.OK) {
moel@140:           for (int i = 0; i < memoryInfo.Values.Length; i++)
moel@140:             r.AppendFormat(" Value[{0}]: {1}{2}", i,
moel@140:                 memoryInfo.Values[i], Environment.NewLine);
moel@140:         } else {
moel@140:           r.Append(" Status: ");
moel@140:           r.AppendLine(status.ToString());
moel@140:         }
moel@140:         r.AppendLine();
moel@140:       }
moel@140: 
moel@140:       return r.ToString();
moel@1:     }
moel@309: 
moel@309:     private void SoftwareControlValueChanged(IControl control) {
moel@309:       SaveDefaultFanSpeed();
moel@309:       NvGPUCoolerLevels coolerLevels = new NvGPUCoolerLevels();
moel@309:       coolerLevels.Version = NVAPI.GPU_COOLER_LEVELS_VER;
moel@309:       coolerLevels.Levels = new NvLevel[NVAPI.MAX_COOLER_PER_GPU];
moel@309:       coolerLevels.Levels[0].Level = (int)control.SoftwareValue;
moel@309:       coolerLevels.Levels[0].Policy = 1;
moel@309:       NVAPI.NvAPI_GPU_SetCoolerLevels(handle, 0, ref coolerLevels);
moel@309:     }
moel@309: 
moel@309:     private void SaveDefaultFanSpeed() {
moel@309:       if (!restoreDefaultFanSpeedRequired) {
moel@309:         NvGPUCoolerSettings coolerSettings = GetCoolerSettings();
moel@309:         if (coolerSettings.Count > 0) {
moel@309:           restoreDefaultFanSpeedRequired = true;
moel@309:           initialFanSpeedValue.Level = coolerSettings.Cooler[0].CurrentLevel;
moel@309:           initialFanSpeedValue.Policy = coolerSettings.Cooler[0].CurrentPolicy;
moel@309:         }
moel@309:       }
moel@309:     }
moel@309: 
moel@309:     private void ControlModeChanged(IControl control) {
moel@309:       if (control.ControlMode == ControlMode.Default) {
moel@309:         RestoreDefaultFanSpeed();
moel@309:       } else {
moel@309:         SoftwareControlValueChanged(control);
moel@309:       }
moel@309:     }
moel@309: 
moel@309:     private void RestoreDefaultFanSpeed() {
moel@309:       if (restoreDefaultFanSpeedRequired) {
moel@309:         NvGPUCoolerLevels coolerLevels = new NvGPUCoolerLevels();
moel@309:         coolerLevels.Version = NVAPI.GPU_COOLER_LEVELS_VER;
moel@309:         coolerLevels.Levels = new NvLevel[NVAPI.MAX_COOLER_PER_GPU];
moel@309:         coolerLevels.Levels[0] = initialFanSpeedValue;
moel@309:         NVAPI.NvAPI_GPU_SetCoolerLevels(handle, 0, ref coolerLevels);
moel@309:         restoreDefaultFanSpeedRequired = false;
moel@309:       }
moel@309:     }
moel@1:   }
moel@1: }