Hardware/Nvidia/NVAPI.cs
author Stephane Lenclud
Sat, 30 Jan 2016 23:01:51 +0100
branchMiniDisplay
changeset 454 f84878f52cd9
parent 334 013e148e8f12
permissions -rw-r--r--
Disabling Nuvoton NCT6791D because of fan full speed bug on Asus Z97 WS.
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/*
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  This Source Code Form is subject to the terms of the Mozilla Public
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  License, v. 2.0. If a copy of the MPL was not distributed with this
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  file, You can obtain one at http://mozilla.org/MPL/2.0/.
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  Copyright (C) 2009-2012 Michael Möller <mmoeller@openhardwaremonitor.org>
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	Copyright (C) 2011 Christian Vallières
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*/
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using System;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace OpenHardwareMonitor.Hardware.Nvidia {
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  internal enum NvStatus {
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    OK = 0,
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    ERROR = -1,
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    LIBRARY_NOT_FOUND = -2,
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    NO_IMPLEMENTATION = -3,
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    API_NOT_INTIALIZED = -4,
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    INVALID_ARGUMENT = -5,
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    NVIDIA_DEVICE_NOT_FOUND = -6,
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    END_ENUMERATION = -7,
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    INVALID_HANDLE = -8,
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    INCOMPATIBLE_STRUCT_VERSION = -9,
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    HANDLE_INVALIDATED = -10,
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    OPENGL_CONTEXT_NOT_CURRENT = -11,
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    NO_GL_EXPERT = -12,
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    INSTRUMENTATION_DISABLED = -13,
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    EXPECTED_LOGICAL_GPU_HANDLE = -100,
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    EXPECTED_PHYSICAL_GPU_HANDLE = -101,
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    EXPECTED_DISPLAY_HANDLE = -102,
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    INVALID_COMBINATION = -103,
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    NOT_SUPPORTED = -104,
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    PORTID_NOT_FOUND = -105,
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    EXPECTED_UNATTACHED_DISPLAY_HANDLE = -106,
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    INVALID_PERF_LEVEL = -107,
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    DEVICE_BUSY = -108,
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    NV_PERSIST_FILE_NOT_FOUND = -109,
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    PERSIST_DATA_NOT_FOUND = -110,
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    EXPECTED_TV_DISPLAY = -111,
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    EXPECTED_TV_DISPLAY_ON_DCONNECTOR = -112,
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    NO_ACTIVE_SLI_TOPOLOGY = -113,
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    SLI_RENDERING_MODE_NOTALLOWED = -114,
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    EXPECTED_DIGITAL_FLAT_PANEL = -115,
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    ARGUMENT_EXCEED_MAX_SIZE = -116,
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    DEVICE_SWITCHING_NOT_ALLOWED = -117,
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    TESTING_CLOCKS_NOT_SUPPORTED = -118,
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    UNKNOWN_UNDERSCAN_CONFIG = -119,
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    TIMEOUT_RECONFIGURING_GPU_TOPO = -120,
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    DATA_NOT_FOUND = -121,
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    EXPECTED_ANALOG_DISPLAY = -122,
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    NO_VIDLINK = -123,
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    REQUIRES_REBOOT = -124,
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    INVALID_HYBRID_MODE = -125,
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    MIXED_TARGET_TYPES = -126,
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    SYSWOW64_NOT_SUPPORTED = -127,
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    IMPLICIT_SET_GPU_TOPOLOGY_CHANGE_NOT_ALLOWED = -128,
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    REQUEST_USER_TO_CLOSE_NON_MIGRATABLE_APPS = -129,
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    OUT_OF_MEMORY = -130,
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    WAS_STILL_DRAWING = -131,
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    FILE_NOT_FOUND = -132,
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    TOO_MANY_UNIQUE_STATE_OBJECTS = -133,
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    INVALID_CALL = -134,
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    D3D10_1_LIBRARY_NOT_FOUND = -135,
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    FUNCTION_NOT_FOUND = -136
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  }
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  internal enum NvThermalController {
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    NONE = 0,
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    GPU_INTERNAL,
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    ADM1032,
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    MAX6649,
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    MAX1617,
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    LM99,
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    LM89,
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    LM64,
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    ADT7473,
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    SBMAX6649,
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    VBIOSEVT,
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    OS,
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    UNKNOWN = -1,
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  }
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  internal enum NvThermalTarget {
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    NONE = 0,
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    GPU = 1,
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    MEMORY = 2,
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    POWER_SUPPLY = 4,
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    BOARD = 8,
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    ALL = 15,
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    UNKNOWN = -1
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  };
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvSensor {
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    public NvThermalController Controller;
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    public uint DefaultMinTemp;
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    public uint DefaultMaxTemp;
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    public uint CurrentTemp;
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    public NvThermalTarget Target;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvGPUThermalSettings {
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    public uint Version;
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    public uint Count;
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    [MarshalAs(UnmanagedType.ByValArray,
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      SizeConst = NVAPI.MAX_THERMAL_SENSORS_PER_GPU)]
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    public NvSensor[] Sensor;
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  }
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  [StructLayout(LayoutKind.Sequential)]
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  internal struct NvDisplayHandle {
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    private readonly IntPtr ptr;
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  }
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  [StructLayout(LayoutKind.Sequential)]
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  internal struct NvPhysicalGpuHandle {
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    private readonly IntPtr ptr;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvClocks {
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    public uint Version;
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    [MarshalAs(UnmanagedType.ByValArray, SizeConst = NVAPI.MAX_CLOCKS_PER_GPU)]
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    public uint[] Clock;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvPState {
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    public bool Present;
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    public int Percentage;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvPStates {
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    public uint Version;
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    public uint Flags;
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    [MarshalAs(UnmanagedType.ByValArray, SizeConst = NVAPI.MAX_PSTATES_PER_GPU)]
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    public NvPState[] PStates;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvUsages {
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    public uint Version;
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    [MarshalAs(UnmanagedType.ByValArray, SizeConst = NVAPI.MAX_USAGES_PER_GPU)]
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    public uint[] Usage;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvCooler {
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    public int Type;
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    public int Controller;
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    public int DefaultMin;
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    public int DefaultMax;
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    public int CurrentMin;
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    public int CurrentMax;
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    public int CurrentLevel;
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    public int DefaultPolicy;
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    public int CurrentPolicy;
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    public int Target;
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    public int ControlType;
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    public int Active;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvGPUCoolerSettings {
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    public uint Version;
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    public uint Count;
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    [MarshalAs(UnmanagedType.ByValArray, SizeConst = NVAPI.MAX_COOLER_PER_GPU)]
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    public NvCooler[] Cooler;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvLevel {
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    public int Level;
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    public int Policy;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvGPUCoolerLevels {
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    public uint Version;
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    [MarshalAs(UnmanagedType.ByValArray, SizeConst = NVAPI.MAX_COOLER_PER_GPU)]
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    public NvLevel[] Levels;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvMemoryInfo {
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    public uint Version;
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    [MarshalAs(UnmanagedType.ByValArray, SizeConst =
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      NVAPI.MAX_MEMORY_VALUES_PER_GPU)]
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    public uint[] Values;
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  }
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  [StructLayout(LayoutKind.Sequential, Pack = 8)]
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  internal struct NvDisplayDriverVersion {
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    public uint Version;
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    public uint DriverVersion;
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    public uint BldChangeListNum;
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    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = NVAPI.SHORT_STRING_MAX)]
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    public string BuildBranch;
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    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = NVAPI.SHORT_STRING_MAX)]
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    public string Adapter;
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  }
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  internal class NVAPI {
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    public const int MAX_PHYSICAL_GPUS = 64;
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    public const int SHORT_STRING_MAX = 64;
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    public const int MAX_THERMAL_SENSORS_PER_GPU = 3;
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    public const int MAX_CLOCKS_PER_GPU = 0x120;
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    public const int MAX_PSTATES_PER_GPU = 8;
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    public const int MAX_USAGES_PER_GPU = 33;
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    public const int MAX_COOLER_PER_GPU = 20;
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    public const int MAX_MEMORY_VALUES_PER_GPU = 5;
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    public static readonly uint GPU_THERMAL_SETTINGS_VER = (uint)
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      Marshal.SizeOf(typeof(NvGPUThermalSettings)) | 0x10000;
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    public static readonly uint GPU_CLOCKS_VER = (uint)
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      Marshal.SizeOf(typeof(NvClocks)) | 0x20000;
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    public static readonly uint GPU_PSTATES_VER = (uint)
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      Marshal.SizeOf(typeof(NvPStates)) | 0x10000;
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    public static readonly uint GPU_USAGES_VER = (uint)
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      Marshal.SizeOf(typeof(NvUsages)) | 0x10000;
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    public static readonly uint GPU_COOLER_SETTINGS_VER = (uint)
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      Marshal.SizeOf(typeof(NvGPUCoolerSettings)) | 0x20000;
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    public static readonly uint GPU_MEMORY_INFO_VER = (uint)
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      Marshal.SizeOf(typeof(NvMemoryInfo)) | 0x20000;
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    public static readonly uint DISPLAY_DRIVER_VERSION_VER = (uint)
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      Marshal.SizeOf(typeof(NvDisplayDriverVersion)) | 0x10000;
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    public static readonly uint GPU_COOLER_LEVELS_VER = (uint)
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      Marshal.SizeOf(typeof(NvGPUCoolerLevels)) | 0x10000;
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    private delegate IntPtr nvapi_QueryInterfaceDelegate(uint id);
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    private delegate NvStatus NvAPI_InitializeDelegate();
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    private delegate NvStatus NvAPI_GPU_GetFullNameDelegate(
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      NvPhysicalGpuHandle gpuHandle, StringBuilder name);
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    public delegate NvStatus NvAPI_GPU_GetThermalSettingsDelegate(
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      NvPhysicalGpuHandle gpuHandle, int sensorIndex,
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      ref NvGPUThermalSettings nvGPUThermalSettings);
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    public delegate NvStatus NvAPI_EnumNvidiaDisplayHandleDelegate(int thisEnum,
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      ref NvDisplayHandle displayHandle);
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    public delegate NvStatus NvAPI_GetPhysicalGPUsFromDisplayDelegate(
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      NvDisplayHandle displayHandle, [Out] NvPhysicalGpuHandle[] gpuHandles,
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      out uint gpuCount);
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    public delegate NvStatus NvAPI_EnumPhysicalGPUsDelegate(
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      [Out] NvPhysicalGpuHandle[] gpuHandles, out int gpuCount);
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    public delegate NvStatus NvAPI_GPU_GetTachReadingDelegate(
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      NvPhysicalGpuHandle gpuHandle, out int value);
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    public delegate NvStatus NvAPI_GPU_GetAllClocksDelegate(
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      NvPhysicalGpuHandle gpuHandle, ref NvClocks nvClocks);
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    public delegate NvStatus NvAPI_GPU_GetPStatesDelegate(
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      NvPhysicalGpuHandle gpuHandle, ref NvPStates nvPStates);
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    public delegate NvStatus NvAPI_GPU_GetUsagesDelegate(
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      NvPhysicalGpuHandle gpuHandle, ref NvUsages nvUsages);
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    public delegate NvStatus NvAPI_GPU_GetCoolerSettingsDelegate(
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      NvPhysicalGpuHandle gpuHandle, int coolerIndex,
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      ref NvGPUCoolerSettings nvGPUCoolerSettings);
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    public delegate NvStatus NvAPI_GPU_SetCoolerLevelsDelegate(
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      NvPhysicalGpuHandle gpuHandle, int coolerIndex,
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      ref NvGPUCoolerLevels NvGPUCoolerLevels);
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    public delegate NvStatus NvAPI_GPU_GetMemoryInfoDelegate(
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      NvDisplayHandle displayHandle, ref NvMemoryInfo nvMemoryInfo);
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    public delegate NvStatus NvAPI_GetDisplayDriverVersionDelegate(
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      NvDisplayHandle displayHandle, [In, Out] ref NvDisplayDriverVersion
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      nvDisplayDriverVersion);
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    public delegate NvStatus NvAPI_GetInterfaceVersionStringDelegate(
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      StringBuilder version);
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    public delegate NvStatus NvAPI_GPU_GetPCIIdentifiersDelegate(
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      NvPhysicalGpuHandle gpuHandle, out uint deviceId, out uint subSystemId, 
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      out uint revisionId, out uint extDeviceId);
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    private static readonly bool available;
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    private static readonly nvapi_QueryInterfaceDelegate nvapi_QueryInterface;
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    private static readonly NvAPI_InitializeDelegate NvAPI_Initialize;
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    private static readonly NvAPI_GPU_GetFullNameDelegate
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      _NvAPI_GPU_GetFullName;
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    private static readonly NvAPI_GetInterfaceVersionStringDelegate
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      _NvAPI_GetInterfaceVersionString;
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    public static readonly NvAPI_GPU_GetThermalSettingsDelegate
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      NvAPI_GPU_GetThermalSettings;
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    public static readonly NvAPI_EnumNvidiaDisplayHandleDelegate
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      NvAPI_EnumNvidiaDisplayHandle;
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    public static readonly NvAPI_GetPhysicalGPUsFromDisplayDelegate
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      NvAPI_GetPhysicalGPUsFromDisplay;
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    public static readonly NvAPI_EnumPhysicalGPUsDelegate
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      NvAPI_EnumPhysicalGPUs;
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    public static readonly NvAPI_GPU_GetTachReadingDelegate
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      NvAPI_GPU_GetTachReading;
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    public static readonly NvAPI_GPU_GetAllClocksDelegate
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      NvAPI_GPU_GetAllClocks;
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    public static readonly NvAPI_GPU_GetPStatesDelegate
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      NvAPI_GPU_GetPStates;
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    public static readonly NvAPI_GPU_GetUsagesDelegate
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      NvAPI_GPU_GetUsages;
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    public static readonly NvAPI_GPU_GetCoolerSettingsDelegate
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      NvAPI_GPU_GetCoolerSettings;
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    public static readonly NvAPI_GPU_SetCoolerLevelsDelegate
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      NvAPI_GPU_SetCoolerLevels;
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    public static readonly NvAPI_GPU_GetMemoryInfoDelegate
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      NvAPI_GPU_GetMemoryInfo;
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    public static readonly NvAPI_GetDisplayDriverVersionDelegate
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      NvAPI_GetDisplayDriverVersion;
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    public static readonly NvAPI_GPU_GetPCIIdentifiersDelegate
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      NvAPI_GPU_GetPCIIdentifiers;
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    private NVAPI() { }
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    public static NvStatus NvAPI_GPU_GetFullName(NvPhysicalGpuHandle gpuHandle,
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      out string name) {
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      StringBuilder builder = new StringBuilder(SHORT_STRING_MAX);
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      NvStatus status;
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      if (_NvAPI_GPU_GetFullName != null)
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        status = _NvAPI_GPU_GetFullName(gpuHandle, builder);
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      else
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        status = NvStatus.FUNCTION_NOT_FOUND;
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      name = builder.ToString();
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      return status;
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    }
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    public static NvStatus NvAPI_GetInterfaceVersionString(out string version) {
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      StringBuilder builder = new StringBuilder(SHORT_STRING_MAX);
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      NvStatus status;
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      if (_NvAPI_GetInterfaceVersionString != null)
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        status = _NvAPI_GetInterfaceVersionString(builder);
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      else
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        status = NvStatus.FUNCTION_NOT_FOUND;
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      version = builder.ToString();
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      return status;
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    }
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    private static string GetDllName() {
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      if (IntPtr.Size == 4) {
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        return "nvapi.dll";
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      } else {
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        return "nvapi64.dll";
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      }
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    }
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    private static void GetDelegate<T>(uint id, out T newDelegate)
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      where T : class {
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      IntPtr ptr = nvapi_QueryInterface(id);
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      if (ptr != IntPtr.Zero) {
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        newDelegate =
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          Marshal.GetDelegateForFunctionPointer(ptr, typeof(T)) as T;
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      } else {
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        newDelegate = null;
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      }
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    }
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    static NVAPI() {
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      DllImportAttribute attribute = new DllImportAttribute(GetDllName());
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      attribute.CallingConvention = CallingConvention.Cdecl;
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      attribute.PreserveSig = true;
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      attribute.EntryPoint = "nvapi_QueryInterface";
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      PInvokeDelegateFactory.CreateDelegate(attribute,
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        out nvapi_QueryInterface);
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      try {
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        GetDelegate(0x0150E828, out NvAPI_Initialize);
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      } catch (DllNotFoundException) { return; } 
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   369
        catch (EntryPointNotFoundException) { return; } 
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        catch (ArgumentNullException) { return; }
moel@1
   371
moel@1
   372
      if (NvAPI_Initialize() == NvStatus.OK) {
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   373
        GetDelegate(0xE3640A56, out NvAPI_GPU_GetThermalSettings);
moel@1
   374
        GetDelegate(0xCEEE8E9F, out _NvAPI_GPU_GetFullName);
moel@1
   375
        GetDelegate(0x9ABDD40D, out NvAPI_EnumNvidiaDisplayHandle);
moel@1
   376
        GetDelegate(0x34EF9506, out NvAPI_GetPhysicalGPUsFromDisplay);
moel@1
   377
        GetDelegate(0xE5AC921F, out NvAPI_EnumPhysicalGPUs);
moel@140
   378
        GetDelegate(0x5F608315, out NvAPI_GPU_GetTachReading);
moel@140
   379
        GetDelegate(0x1BD69F49, out NvAPI_GPU_GetAllClocks);
moel@140
   380
        GetDelegate(0x60DED2ED, out NvAPI_GPU_GetPStates);
moel@140
   381
        GetDelegate(0x189A1FDF, out NvAPI_GPU_GetUsages);
moel@140
   382
        GetDelegate(0xDA141340, out NvAPI_GPU_GetCoolerSettings);
moel@309
   383
        GetDelegate(0x891FA0AE, out NvAPI_GPU_SetCoolerLevels);
moel@140
   384
        GetDelegate(0x774AA982, out NvAPI_GPU_GetMemoryInfo);
moel@140
   385
        GetDelegate(0xF951A4D1, out NvAPI_GetDisplayDriverVersion);
moel@140
   386
        GetDelegate(0x01053FA5, out _NvAPI_GetInterfaceVersionString);
moel@334
   387
        GetDelegate(0x2DDFB66E, out NvAPI_GPU_GetPCIIdentifiers);
moel@140
   388
moel@1
   389
        available = true;
moel@1
   390
      }
moel@1
   391
    }
moel@1
   392
moel@1
   393
    public static bool IsAvailable {
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   394
      get { return available; }
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   395
    }
moel@1
   396
moel@1
   397
  }
moel@1
   398
}