OpenHardwareMonitor: Hardware/CPU/IntelCPU.cs@2de3a3e5f0b5

     1 /*

     3   This Source Code Form is subject to the terms of the Mozilla Public

     4   License, v. 2.0. If a copy of the MPL was not distributed with this

     5   file, You can obtain one at http://mozilla.org/MPL/2.0/.

     7   Copyright (C) 2009-2012 Michael Möller <mmoeller@openhardwaremonitor.org>

     9 */

    11 using System;

    12 using System.Globalization;

    13 using System.Text;

    15 namespace OpenHardwareMonitor.Hardware.CPU {

    16   internal sealed class IntelCPU : GenericCPU {

    18     private enum Microarchitecture {

    19       Unknown,

    20       NetBurst,

    21       Core,

    22       Atom,

    23       Nehalem,

    24       SandyBridge,

    25       IvyBridge

    26     }

    28     private readonly Sensor[] coreTemperatures;

    29     private readonly Sensor packageTemperature;

    30     private readonly Sensor[] coreClocks;

    31     private readonly Sensor busClock;

    32     private readonly Sensor[] powerSensors;

    34     private readonly Microarchitecture microarchitecture;

    35     private readonly double timeStampCounterMultiplier;

    37     private const uint IA32_THERM_STATUS_MSR = 0x019C;

    38     private const uint IA32_TEMPERATURE_TARGET = 0x01A2;

    39     private const uint IA32_PERF_STATUS = 0x0198;

    40     private const uint MSR_PLATFORM_INFO = 0xCE;

    41     private const uint IA32_PACKAGE_THERM_STATUS = 0x1B1;

    42     private const uint MSR_RAPL_POWER_UNIT = 0x606;

    43     private const uint MSR_PKG_ENERY_STATUS = 0x611;

    44     private const uint MSR_DRAM_ENERGY_STATUS = 0x619;

    45     private const uint MSR_PP0_ENERY_STATUS = 0x639;

    46     private const uint MSR_PP1_ENERY_STATUS = 0x641;

    48     private readonly uint[] energyStatusMSRs = { MSR_PKG_ENERY_STATUS,

    49       MSR_PP0_ENERY_STATUS, MSR_PP1_ENERY_STATUS, MSR_DRAM_ENERGY_STATUS };

    50     private readonly string[] powerSensorLabels =

    51       { "CPU Package", "CPU Cores", "CPU Graphics", "CPU DRAM" };

    52     private float energyUnitMultiplier = 0;

    53     private DateTime[] lastEnergyTime;

    54     private uint[] lastEnergyConsumed;

    57     private float[] Floats(float f) {

    58       float[] result = new float[coreCount];

    59       for (int i = 0; i < coreCount; i++)

    60         result[i] = f;

    61       return result;

    62     }

    64     private float[] GetTjMaxFromMSR() {

    65       uint eax, edx;

    66       float[] result = new float[coreCount];

    67       for (int i = 0; i < coreCount; i++) {

    68         if (Ring0.RdmsrTx(IA32_TEMPERATURE_TARGET, out eax,

    69           out edx, 1UL << cpuid[i][0].Thread)) {

    70           result[i] = (eax >> 16) & 0xFF;

    71         } else {

    72           result[i] = 100;

    73         }

    74       }

    75       return result;

    76     }

    78     public IntelCPU(int processorIndex, CPUID[][] cpuid, ISettings settings)

    79       : base(processorIndex, cpuid, settings) {

    80       // set tjMax

    81       float[] tjMax;

    82       switch (family) {

    83         case 0x06: {

    84             switch (model) {

    85               case 0x0F: // Intel Core 2 (65nm)

    86                 microarchitecture = Microarchitecture.Core;

    87                 switch (stepping) {

    88                   case 0x06: // B2

    89                     switch (coreCount) {

    90                       case 2:

    91                         tjMax = Floats(80 + 10); break;

    92                       case 4:

    93                         tjMax = Floats(90 + 10); break;

    94                       default:

    95                         tjMax = Floats(85 + 10); break;

    96                     }

    97                     tjMax = Floats(80 + 10); break;

    98                   case 0x0B: // G0

    99                     tjMax = Floats(90 + 10); break;

   100                   case 0x0D: // M0

   101                     tjMax = Floats(85 + 10); break;

   102                   default:

   103                     tjMax = Floats(85 + 10); break;

   104                 } break;

   105               case 0x17: // Intel Core 2 (45nm)

   106                 microarchitecture = Microarchitecture.Core;

   107                 tjMax = Floats(100); break;

   108               case 0x1C: // Intel Atom (45nm)

   109                 microarchitecture = Microarchitecture.Atom;

   110                 switch (stepping) {

   111                   case 0x02: // C0

   112                     tjMax = Floats(90); break;

   113                   case 0x0A: // A0, B0

   114                     tjMax = Floats(100); break;

   115                   default:

   116                     tjMax = Floats(90); break;

   117                 } break;

   118               case 0x1A: // Intel Core i7 LGA1366 (45nm)

   119               case 0x1E: // Intel Core i5, i7 LGA1156 (45nm)

   120               case 0x1F: // Intel Core i5, i7

   121               case 0x25: // Intel Core i3, i5, i7 LGA1156 (32nm)

   122               case 0x2C: // Intel Core i7 LGA1366 (32nm) 6 Core

   123               case 0x2E: // Intel Xeon Processor 7500 series (45nm)

   124               case 0x2F: // Intel Xeon Processor (32nm)

   125                 microarchitecture = Microarchitecture.Nehalem;

   126                 tjMax = GetTjMaxFromMSR();

   127                 break;

   128               case 0x2A: // Intel Core i5, i7 2xxx LGA1155 (32nm)

   129               case 0x2D: // Next Generation Intel Xeon, i7 3xxx LGA2011 (32nm)

   130                 microarchitecture = Microarchitecture.SandyBridge;

   131                 tjMax = GetTjMaxFromMSR();

   132                 break;

   133               case 0x3A: // Intel Core i5, i7 3xxx LGA1155 (22nm)

   134                 microarchitecture = Microarchitecture.IvyBridge;

   135                 tjMax = GetTjMaxFromMSR();

   136                 break;

   137               default:

   138                 microarchitecture = Microarchitecture.Unknown;

   139                 tjMax = Floats(100);

   140                 break;

   141             }

   142           } break;

   143         case 0x0F: {

   144             switch (model) {

   145               case 0x00: // Pentium 4 (180nm)

   146               case 0x01: // Pentium 4 (130nm)

   147               case 0x02: // Pentium 4 (130nm)

   148               case 0x03: // Pentium 4, Celeron D (90nm)

   149               case 0x04: // Pentium 4, Pentium D, Celeron D (90nm)

   150               case 0x06: // Pentium 4, Pentium D, Celeron D (65nm)

   151                 microarchitecture = Microarchitecture.NetBurst;

   152                 tjMax = Floats(100);

   153                 break;

   154               default:

   155                 microarchitecture = Microarchitecture.Unknown;

   156                 tjMax = Floats(100);

   157                 break;

   158             }

   159           } break;

   160         default:

   161           microarchitecture = Microarchitecture.Unknown;

   162           tjMax = Floats(100);

   163           break;

   164       }

   166       // set timeStampCounterMultiplier

   167       switch (microarchitecture) {

   168         case Microarchitecture.NetBurst:

   169         case Microarchitecture.Atom:

   170         case Microarchitecture.Core: {

   171             uint eax, edx;

   172             if (Ring0.Rdmsr(IA32_PERF_STATUS, out eax, out edx)) {

   173               timeStampCounterMultiplier =

   174                 ((edx >> 8) & 0x1f) + 0.5 * ((edx >> 14) & 1);

   175             }

   176           } break;

   177         case Microarchitecture.Nehalem:

   178         case Microarchitecture.SandyBridge:

   179         case Microarchitecture.IvyBridge: {

   180             uint eax, edx;

   181             if (Ring0.Rdmsr(MSR_PLATFORM_INFO, out eax, out edx)) {

   182               timeStampCounterMultiplier = (eax >> 8) & 0xff;

   183             }

   184           } break;

   185         default:

   186           timeStampCounterMultiplier = 0;

   187           break;

   188       }

   190       // check if processor supports a digital thermal sensor at core level

   191       if (cpuid[0][0].Data.GetLength(0) > 6 &&

   192         (cpuid[0][0].Data[6, 0] & 1) != 0 &&

   193         microarchitecture != Microarchitecture.Unknown)

   194       {

   195         coreTemperatures = new Sensor[coreCount];

   196         for (int i = 0; i < coreTemperatures.Length; i++) {

   197           coreTemperatures[i] = new Sensor(CoreString(i), i,

   198             SensorType.Temperature, this, new[] {

   199               new ParameterDescription(

   200                 "TjMax [°C]", "TjMax temperature of the core sensor.\n" +

   201                 "Temperature = TjMax - TSlope * Value.", tjMax[i]),

   202               new ParameterDescription("TSlope [°C]",

   203                 "Temperature slope of the digital thermal sensor.\n" +

   204                 "Temperature = TjMax - TSlope * Value.", 1)}, settings);

   205           ActivateSensor(coreTemperatures[i]);

   206         }

   207       } else {

   208         coreTemperatures = new Sensor[0];

   209       }

   211       // check if processor supports a digital thermal sensor at package level

   212       if (cpuid[0][0].Data.GetLength(0) > 6 &&

   213         (cpuid[0][0].Data[6, 0] & 0x40) != 0 &&

   214         microarchitecture != Microarchitecture.Unknown)

   215       {

   216         packageTemperature = new Sensor("CPU Package",

   217           coreTemperatures.Length, SensorType.Temperature, this, new[] {

   218               new ParameterDescription(

   219                 "TjMax [°C]", "TjMax temperature of the package sensor.\n" +

   220                 "Temperature = TjMax - TSlope * Value.", tjMax[0]),

   221               new ParameterDescription("TSlope [°C]",

   222                 "Temperature slope of the digital thermal sensor.\n" +

   223                 "Temperature = TjMax - TSlope * Value.", 1)}, settings);

   224         ActivateSensor(packageTemperature);

   225       }

   227       busClock = new Sensor("Bus Speed", 0, SensorType.Clock, this, settings);

   228       coreClocks = new Sensor[coreCount];

   229       for (int i = 0; i < coreClocks.Length; i++) {

   230         coreClocks[i] =

   231           new Sensor(CoreString(i), i + 1, SensorType.Clock, this, settings);

   232         if (HasTimeStampCounter && microarchitecture != Microarchitecture.Unknown)

   233           ActivateSensor(coreClocks[i]);

   234       }

   236       if (microarchitecture == Microarchitecture.SandyBridge ||

   237           microarchitecture == Microarchitecture.IvyBridge)

   238       {

   239         powerSensors = new Sensor[energyStatusMSRs.Length];

   240         lastEnergyTime = new DateTime[energyStatusMSRs.Length];

   241         lastEnergyConsumed = new uint[energyStatusMSRs.Length];

   243         uint eax, edx;

   244         if (Ring0.Rdmsr(MSR_RAPL_POWER_UNIT, out eax, out edx))

   245           energyUnitMultiplier = 1.0f / (1 << (int)((eax >> 8) & 0x1FF));

   247         if (energyUnitMultiplier != 0) {

   248           for (int i = 0; i < energyStatusMSRs.Length; i++) {

   249             if (!Ring0.Rdmsr(energyStatusMSRs[i], out eax, out edx))

   250               continue;

   252             lastEnergyTime[i] = DateTime.UtcNow;

   253             lastEnergyConsumed[i] = eax;

   254             powerSensors[i] = new Sensor(powerSensorLabels[i], i,

   255               SensorType.Power, this, settings);

   256             ActivateSensor(powerSensors[i]);

   257           }

   258         }

   259       }

   261       Update();

   262     }

   264     protected override uint[] GetMSRs() {

   265       return new[] {

   266         MSR_PLATFORM_INFO,

   267         IA32_PERF_STATUS ,

   268         IA32_THERM_STATUS_MSR,

   269         IA32_TEMPERATURE_TARGET,

   270         IA32_PACKAGE_THERM_STATUS,

   271         MSR_RAPL_POWER_UNIT,

   272         MSR_PKG_ENERY_STATUS,

   273         MSR_DRAM_ENERGY_STATUS,

   274         MSR_PP0_ENERY_STATUS,

   275         MSR_PP1_ENERY_STATUS

   276       };

   277     }

   279     public override string GetReport() {

   280       StringBuilder r = new StringBuilder();

   281       r.Append(base.GetReport());

   283       r.Append("Microarchitecture: ");

   284       r.AppendLine(microarchitecture.ToString());

   285       r.Append("Time Stamp Counter Multiplier: ");

   286       r.AppendLine(timeStampCounterMultiplier.ToString(

   287         CultureInfo.InvariantCulture));

   288       r.AppendLine();

   290       return r.ToString();

   291     }

   293     public override void Update() {

   294       base.Update();

   296       for (int i = 0; i < coreTemperatures.Length; i++) {

   297         uint eax, edx;

   298         if (Ring0.RdmsrTx(

   299           IA32_THERM_STATUS_MSR, out eax, out edx,

   300             1UL << cpuid[i][0].Thread)) {

   301           // if reading is valid

   302           if ((eax & 0x80000000) != 0) {

   303             // get the dist from tjMax from bits 22:16

   304             float deltaT = ((eax & 0x007F0000) >> 16);

   305             float tjMax = coreTemperatures[i].Parameters[0].Value;

   306             float tSlope = coreTemperatures[i].Parameters[1].Value;

   307             coreTemperatures[i].Value = tjMax - tSlope * deltaT;

   308           } else {

   309             coreTemperatures[i].Value = null;

   310           }

   311         }

   312       }

   314       if (packageTemperature != null) {

   315         uint eax, edx;

   316         if (Ring0.RdmsrTx(

   317           IA32_PACKAGE_THERM_STATUS, out eax, out edx,

   318             1UL << cpuid[0][0].Thread)) {

   319           // get the dist from tjMax from bits 22:16

   320           float deltaT = ((eax & 0x007F0000) >> 16);

   321           float tjMax = packageTemperature.Parameters[0].Value;

   322           float tSlope = packageTemperature.Parameters[1].Value;

   323           packageTemperature.Value = tjMax - tSlope * deltaT;

   324         } else {

   325           packageTemperature.Value = null;

   326         }

   327       }

   329       if (HasTimeStampCounter && timeStampCounterMultiplier > 0) {

   330         double newBusClock = 0;

   331         uint eax, edx;

   332         for (int i = 0; i < coreClocks.Length; i++) {

   333           System.Threading.Thread.Sleep(1);

   334           if (Ring0.RdmsrTx(IA32_PERF_STATUS, out eax, out edx,

   335             1UL << cpuid[i][0].Thread)) {

   336             newBusClock =

   337               TimeStampCounterFrequency / timeStampCounterMultiplier;

   338             switch (microarchitecture) {

   339               case Microarchitecture.Nehalem: {

   340                   uint multiplier = eax & 0xff;

   341                   coreClocks[i].Value = (float)(multiplier * newBusClock);

   342                 } break;

   343               case Microarchitecture.SandyBridge:

   344               case Microarchitecture.IvyBridge: {

   345                   uint multiplier = (eax >> 8) & 0xff;

   346                   coreClocks[i].Value = (float)(multiplier * newBusClock);

   347                 } break;

   348               default: {

   349                   double multiplier =

   350                     ((eax >> 8) & 0x1f) + 0.5 * ((eax >> 14) & 1);

   351                   coreClocks[i].Value = (float)(multiplier * newBusClock);

   352                 } break;

   353             }

   354           } else {

   355             // if IA32_PERF_STATUS is not available, assume TSC frequency

   356             coreClocks[i].Value = (float)TimeStampCounterFrequency;

   357           }

   358         }

   359         if (newBusClock > 0) {

   360           this.busClock.Value = (float)newBusClock;

   361           ActivateSensor(this.busClock);

   362         }

   363       }

   365       if (powerSensors != null) {

   366         foreach (Sensor sensor in powerSensors) {

   367           if (sensor == null)

   368             continue;

   370           uint eax, edx;

   371           if (!Ring0.Rdmsr(energyStatusMSRs[sensor.Index], out eax, out edx))

   372             continue;

   374           DateTime time = DateTime.UtcNow;

   375           uint energyConsumed = eax;

   376           float deltaTime =

   377             (float)(time - lastEnergyTime[sensor.Index]).TotalSeconds;

   378           if (deltaTime < 0.01)

   379             continue;

   381           sensor.Value = energyUnitMultiplier * unchecked(

   382             energyConsumed - lastEnergyConsumed[sensor.Index]) / deltaTime;

   383           lastEnergyTime[sensor.Index] = time;

   384           lastEnergyConsumed[sensor.Index] = energyConsumed;

   385         }

   386       }

   387     }

   388   }

   389 }

author	moel.mich
	Tue, 24 Jul 2012 16:45:48 +0000
changeset 372	2de3a3e5f0b5
parent 344	3145aadca3d2
child 396	c7e2a6aa4f96
permissions	-rw-r--r--