moel@1: /*
moel@1:   
moel@1:   Version: MPL 1.1/GPL 2.0/LGPL 2.1
moel@1: 
moel@1:   The contents of this file are subject to the Mozilla Public License Version
moel@1:   1.1 (the "License"); you may not use this file except in compliance with
moel@1:   the License. You may obtain a copy of the License at
moel@1:  
moel@1:   http://www.mozilla.org/MPL/
moel@1: 
moel@1:   Software distributed under the License is distributed on an "AS IS" basis,
moel@1:   WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
moel@1:   for the specific language governing rights and limitations under the License.
moel@1: 
moel@1:   The Original Code is the Open Hardware Monitor code.
moel@1: 
moel@1:   The Initial Developer of the Original Code is 
moel@1:   Michael Möller <m.moeller@gmx.ch>.
moel@1:   Portions created by the Initial Developer are Copyright (C) 2009-2010
moel@1:   the Initial Developer. All Rights Reserved.
moel@1: 
moel@1:   Contributor(s):
moel@1: 
moel@1:   Alternatively, the contents of this file may be used under the terms of
moel@1:   either the GNU General Public License Version 2 or later (the "GPL"), or
moel@1:   the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
moel@1:   in which case the provisions of the GPL or the LGPL are applicable instead
moel@1:   of those above. If you wish to allow use of your version of this file only
moel@1:   under the terms of either the GPL or the LGPL, and not to allow others to
moel@1:   use your version of this file under the terms of the MPL, indicate your
moel@1:   decision by deleting the provisions above and replace them with the notice
moel@1:   and other provisions required by the GPL or the LGPL. If you do not delete
moel@1:   the provisions above, a recipient may use your version of this file under
moel@1:   the terms of any one of the MPL, the GPL or the LGPL.
moel@1:  
moel@1: */
moel@1: 
moel@1: using System;
moel@1: using System.Collections.Generic;
moel@1: using System.Runtime.InteropServices;
moel@1: using System.Text;
moel@1: 
moel@1: namespace OpenHardwareMonitor.Hardware.Nvidia {
moel@1: 
moel@1:   public enum NvStatus {
moel@1:     OK = 0,
moel@1:     ERROR = -1,
moel@1:     LIBRARY_NOT_FOUND = -2,
moel@1:     NO_IMPLEMENTATION = -3,
moel@1:     API_NOT_INTIALIZED = -4,
moel@1:     INVALID_ARGUMENT = -5,
moel@1:     NVIDIA_DEVICE_NOT_FOUND = -6,
moel@1:     END_ENUMERATION = -7,
moel@1:     INVALID_HANDLE = -8,
moel@1:     INCOMPATIBLE_STRUCT_VERSION = -9,
moel@1:     HANDLE_INVALIDATED = -10,
moel@1:     OPENGL_CONTEXT_NOT_CURRENT = -11,
moel@1:     NO_GL_EXPERT = -12,
moel@1:     INSTRUMENTATION_DISABLED = -13,
moel@1:     EXPECTED_LOGICAL_GPU_HANDLE = -100,
moel@1:     EXPECTED_PHYSICAL_GPU_HANDLE = -101,
moel@1:     EXPECTED_DISPLAY_HANDLE = -102,
moel@1:     INVALID_COMBINATION = -103,
moel@1:     NOT_SUPPORTED = -104,
moel@1:     PORTID_NOT_FOUND = -105,
moel@1:     EXPECTED_UNATTACHED_DISPLAY_HANDLE = -106,
moel@1:     INVALID_PERF_LEVEL = -107,
moel@1:     DEVICE_BUSY = -108,
moel@1:     NV_PERSIST_FILE_NOT_FOUND = -109,
moel@1:     PERSIST_DATA_NOT_FOUND = -110,
moel@1:     EXPECTED_TV_DISPLAY = -111,
moel@1:     EXPECTED_TV_DISPLAY_ON_DCONNECTOR = -112,
moel@1:     NO_ACTIVE_SLI_TOPOLOGY = -113,
moel@1:     SLI_RENDERING_MODE_NOTALLOWED = -114,
moel@1:     EXPECTED_DIGITAL_FLAT_PANEL = -115,
moel@1:     ARGUMENT_EXCEED_MAX_SIZE = -116,
moel@1:     DEVICE_SWITCHING_NOT_ALLOWED = -117,
moel@1:     TESTING_CLOCKS_NOT_SUPPORTED = -118,
moel@1:     UNKNOWN_UNDERSCAN_CONFIG = -119,
moel@1:     TIMEOUT_RECONFIGURING_GPU_TOPO = -120,
moel@1:     DATA_NOT_FOUND = -121,
moel@1:     EXPECTED_ANALOG_DISPLAY = -122,
moel@1:     NO_VIDLINK = -123,
moel@1:     REQUIRES_REBOOT = -124,
moel@1:     INVALID_HYBRID_MODE = -125,
moel@1:     MIXED_TARGET_TYPES = -126,
moel@1:     SYSWOW64_NOT_SUPPORTED = -127,
moel@1:     IMPLICIT_SET_GPU_TOPOLOGY_CHANGE_NOT_ALLOWED = -128,
moel@1:     REQUEST_USER_TO_CLOSE_NON_MIGRATABLE_APPS = -129,
moel@1:     OUT_OF_MEMORY = -130,
moel@1:     WAS_STILL_DRAWING = -131,
moel@1:     FILE_NOT_FOUND = -132,
moel@1:     TOO_MANY_UNIQUE_STATE_OBJECTS = -133,
moel@1:     INVALID_CALL = -134,
moel@1:     D3D10_1_LIBRARY_NOT_FOUND = -135,
moel@1:     FUNCTION_NOT_FOUND = -136
moel@1:   }  
moel@1: 
moel@1:   public enum NvThermalController {
moel@1:     NONE = 0,
moel@1:     GPU_INTERNAL,  
moel@1:     ADM1032,
moel@1:     MAX6649,       
moel@1:     MAX1617,      
moel@1:     LM99,      
moel@1:     LM89,         
moel@1:     LM64,         
moel@1:     ADT7473,
moel@1:     SBMAX6649,
moel@1:     VBIOSEVT,  
moel@1:     OS,    
moel@1:     UNKNOWN = -1,
moel@1:   } 
moel@1: 
moel@1:   public enum NvThermalTarget {
moel@1:     NONE = 0,
moel@1:     GPU = 1,
moel@1:     MEMORY = 2,
moel@1:     POWER_SUPPLY = 4,
moel@1:     BOARD = 8,
moel@1:     ALL = 15,
moel@1:     UNKNOWN = -1
moel@1:   };
moel@1: 
moel@1:   [StructLayout(LayoutKind.Sequential)]
moel@1:   public struct NvSensor {
moel@1:     public NvThermalController Controller;
moel@1:     public int DefaultMinTemp;
moel@1:     public int DefaultMaxTemp;
moel@1:     public int CurrentTemp;
moel@1:     public NvThermalTarget Target;     
moel@1:   }
moel@1: 
moel@1:   [StructLayout(LayoutKind.Sequential)]
moel@1:   public struct NvGPUThermalSettings {
moel@1:     public int Version;
moel@1:     public int Count;
moel@1:     [MarshalAs(UnmanagedType.ByValArray, 
moel@1:       SizeConst = NVAPI.MAX_THERMAL_SENSORS_PER_GPU)]
moel@1:     public NvSensor[] Sensor;
moel@1:   }
moel@1: 
moel@1:   [StructLayout(LayoutKind.Sequential)]
moel@1:   public struct NvDisplayHandle {
moel@1:     private int handle;
moel@1:   }
moel@1: 
moel@1:   [StructLayout(LayoutKind.Sequential)]
moel@1:   public struct NvPhysicalGpuHandle {
moel@1:     private int handle;
moel@1:   }
moel@1: 
moel@1:   public class NVAPI {
moel@1:           
moel@1:     private const int SHORT_STRING_MAX = 64;
moel@1: 
moel@1:     public const int MAX_THERMAL_SENSORS_PER_GPU = 3;
moel@1:     public const int MAX_PHYSICAL_GPUS = 64;
moel@1:     public static readonly int GPU_THERMAL_SETTINGS_VER =
moel@1:       Marshal.SizeOf(typeof(NvGPUThermalSettings)) | 0x10000;
moel@1:             
moel@1:     private delegate IntPtr nvapi_QueryInterfaceDelegate(uint id);
moel@1:     private delegate NvStatus NvAPI_InitializeDelegate();
moel@1:     private delegate NvStatus NvAPI_GPU_GetFullNameDelegate(
moel@1:       NvPhysicalGpuHandle gpuHandle, StringBuilder name);
moel@1: 
moel@1:     public delegate NvStatus NvAPI_GPU_GetThermalSettingsDelegate(
moel@1:       NvPhysicalGpuHandle gpuHandle, int sensorIndex, 
moel@1:       ref NvGPUThermalSettings nvGPUThermalSettings);
moel@1:     public delegate NvStatus NvAPI_EnumNvidiaDisplayHandleDelegate(int thisEnum,
moel@1:       ref NvDisplayHandle displayHandle);
moel@1:     public delegate NvStatus NvAPI_GetPhysicalGPUsFromDisplayDelegate(
moel@1:       NvDisplayHandle displayHandle, [Out] NvPhysicalGpuHandle[] gpuHandles, 
moel@1:       out int gpuCount);
moel@1:     public delegate NvStatus NvAPI_EnumPhysicalGPUsDelegate(
moel@1:       [Out] NvPhysicalGpuHandle[] gpuHandles, out int gpuCount);
moel@1: 
moel@1:     private static bool available = false;
moel@1:     private static nvapi_QueryInterfaceDelegate nvapi_QueryInterface;
moel@1:     private static NvAPI_InitializeDelegate NvAPI_Initialize;
moel@1:     private static NvAPI_GPU_GetFullNameDelegate _NvAPI_GPU_GetFullName;
moel@1: 
moel@1:     public static NvAPI_GPU_GetThermalSettingsDelegate 
moel@1:       NvAPI_GPU_GetThermalSettings;
moel@1:     public static NvAPI_EnumNvidiaDisplayHandleDelegate
moel@1:       NvAPI_EnumNvidiaDisplayHandle;
moel@1:     public static NvAPI_GetPhysicalGPUsFromDisplayDelegate
moel@1:       NvAPI_GetPhysicalGPUsFromDisplay;
moel@1:     public static NvAPI_EnumPhysicalGPUsDelegate
moel@1:       NvAPI_EnumPhysicalGPUs;
moel@1: 
moel@1:     public static NvStatus NvAPI_GPU_GetFullName(NvPhysicalGpuHandle gpuHandle,
moel@1:       out string name) {
moel@1:       StringBuilder builder = new StringBuilder(SHORT_STRING_MAX);
moel@1:       NvStatus status = _NvAPI_GPU_GetFullName(gpuHandle, builder);
moel@1:       name = builder.ToString();
moel@1:       return status;
moel@1:     }
moel@1: 
moel@1:     private static string GetDllName() {
moel@1:       if (IntPtr.Size == 4) {
moel@1:         return "nvapi.dll";
moel@1:       } else {
moel@1:         return "nvapi64.dll";
moel@1:       }
moel@1:     }
moel@1: 
moel@1:     private static void GetDelegate<T>(uint id, out T newDelegate) 
moel@1:       where T : class 
moel@1:     {
moel@1:       IntPtr ptr = nvapi_QueryInterface(id);
moel@1:       newDelegate = Marshal.GetDelegateForFunctionPointer(ptr, typeof(T)) as T;      
moel@1:     }
moel@1: 
moel@1:     static NVAPI() { 
moel@1:       DllImportAttribute attribute = new DllImportAttribute(GetDllName());
moel@1:       attribute.CallingConvention = CallingConvention.Cdecl;
moel@1:       attribute.PreserveSig = true;
moel@1:       attribute.EntryPoint = "nvapi_QueryInterface";
moel@1:       PInvokeDelegateFactory.CreateDelegate(attribute,
moel@1:         out nvapi_QueryInterface);
moel@1: 
moel@1:       try {
moel@1:         GetDelegate(0x0150E828, out NvAPI_Initialize);
moel@1:       } catch (DllNotFoundException) { return; } 
moel@1:         catch (ArgumentNullException) { return; }
moel@1: 
moel@1:       if (NvAPI_Initialize() == NvStatus.OK) {
moel@1:         GetDelegate(0xE3640A56, out NvAPI_GPU_GetThermalSettings);
moel@1:         GetDelegate(0xCEEE8E9F, out _NvAPI_GPU_GetFullName);
moel@1:         GetDelegate(0x9ABDD40D, out NvAPI_EnumNvidiaDisplayHandle);
moel@1:         GetDelegate(0x34EF9506, out NvAPI_GetPhysicalGPUsFromDisplay);
moel@1:         GetDelegate(0xE5AC921F, out NvAPI_EnumPhysicalGPUs);
moel@1:         available = true;
moel@1:       }
moel@1:     }
moel@1: 
moel@1:     public static bool IsAvailable {
moel@1:       get { return available; }
moel@1:     }
moel@1: 
moel@1:   }
moel@1: }