Hardware/CPU/IntelCPU.cs
author moel.mich
Wed, 17 Feb 2010 20:45:31 +0000
changeset 50 7d83a09511f0
parent 46 f847947b7f8e
child 52 8495c0ee29ac
permissions -rw-r--r--
Fixed AMD family 0Fh temperature reading of first core.
     1 /*
     2   
     3   Version: MPL 1.1/GPL 2.0/LGPL 2.1
     4 
     5   The contents of this file are subject to the Mozilla Public License Version
     6   1.1 (the "License"); you may not use this file except in compliance with
     7   the License. You may obtain a copy of the License at
     8  
     9   http://www.mozilla.org/MPL/
    10 
    11   Software distributed under the License is distributed on an "AS IS" basis,
    12   WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
    13   for the specific language governing rights and limitations under the License.
    14 
    15   The Original Code is the Open Hardware Monitor code.
    16 
    17   The Initial Developer of the Original Code is 
    18   Michael Möller <m.moeller@gmx.ch>.
    19   Portions created by the Initial Developer are Copyright (C) 2009-2010
    20   the Initial Developer. All Rights Reserved.
    21 
    22   Contributor(s):
    23 
    24   Alternatively, the contents of this file may be used under the terms of
    25   either the GNU General Public License Version 2 or later (the "GPL"), or
    26   the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
    27   in which case the provisions of the GPL or the LGPL are applicable instead
    28   of those above. If you wish to allow use of your version of this file only
    29   under the terms of either the GPL or the LGPL, and not to allow others to
    30   use your version of this file under the terms of the MPL, indicate your
    31   decision by deleting the provisions above and replace them with the notice
    32   and other provisions required by the GPL or the LGPL. If you do not delete
    33   the provisions above, a recipient may use your version of this file under
    34   the terms of any one of the MPL, the GPL or the LGPL.
    35  
    36 */
    37 
    38 using System;
    39 using System.Collections.Generic;
    40 using System.Drawing;
    41 using System.Diagnostics;
    42 using System.Reflection;
    43 using System.Text;
    44 
    45 namespace OpenHardwareMonitor.Hardware.CPU {
    46   public class IntelCPU : Hardware, IHardware {
    47 
    48     private string name;
    49     private Image icon;
    50 
    51     private uint family;
    52     private uint model;
    53     private uint stepping;
    54 
    55     private Sensor[] coreTemperatures;
    56     private Sensor totalLoad;
    57     private Sensor[] coreLoads;
    58     private Sensor[] coreClocks;
    59     private Sensor busClock;
    60 
    61     private float tjMax = 0;
    62     private uint logicalProcessors;
    63     private uint logicalProcessorsPerCore;
    64     private uint coreCount;
    65 
    66     private CPULoad cpuLoad;
    67 
    68     private ulong lastCount;    
    69     private long lastTime;
    70     private uint maxNehalemMultiplier = 0;
    71     
    72     private const uint IA32_THERM_STATUS_MSR = 0x019C;
    73     private const uint IA32_TEMPERATURE_TARGET = 0x01A2;
    74     private const uint IA32_PERF_STATUS = 0x0198;
    75     private const uint MSR_PLATFORM_INFO = 0xCE;
    76 
    77     private string CoreString(int i) {
    78       if (coreCount == 1)
    79         return "CPU Core";
    80       else
    81         return "CPU Core #" + (i + 1);
    82     }
    83 
    84     public IntelCPU(string name, uint family, uint model, uint stepping, 
    85       uint[,] cpuidData, uint[,] cpuidExtData) {
    86       
    87       this.name = name;
    88       this.icon = Utilities.EmbeddedResources.GetImage("cpu.png");
    89 
    90       this.family = family;
    91       this.model = model;
    92       this.stepping = stepping;
    93 
    94       logicalProcessors = 0;
    95       if (cpuidData.GetLength(0) > 0x0B) {
    96         uint eax, ebx, ecx, edx;
    97         WinRing0.CpuidEx(0x0B, 0, out eax, out ebx, out ecx, out edx);
    98         logicalProcessorsPerCore = ebx & 0xFF;
    99         if (logicalProcessorsPerCore > 0) {
   100           WinRing0.CpuidEx(0x0B, 1, out eax, out ebx, out ecx, out edx);
   101           logicalProcessors = ebx & 0xFF;
   102         }   
   103       }
   104       if (logicalProcessors <= 0 && cpuidData.GetLength(0) > 0x04) {
   105         uint coresPerPackage = ((cpuidData[4, 0] >> 26) & 0x3F) + 1;
   106         uint logicalPerPackage = (cpuidData[1, 1] >> 16) & 0xFF;        
   107         logicalProcessorsPerCore = logicalPerPackage / coresPerPackage;
   108         logicalProcessors = logicalPerPackage;
   109       }
   110       if (logicalProcessors <= 0 && cpuidData.GetLength(0) > 0x01) {
   111         uint logicalPerPackage = (cpuidData[1, 1] >> 16) & 0xFF;
   112         logicalProcessorsPerCore = logicalPerPackage;
   113         logicalProcessors = logicalPerPackage;
   114       }
   115       if (logicalProcessors <= 0) {
   116         logicalProcessors = 1;
   117         logicalProcessorsPerCore = 1;
   118       }
   119 
   120       coreCount = logicalProcessors / logicalProcessorsPerCore;
   121       
   122       switch (family) {
   123         case 0x06: {
   124             switch (model) {
   125               case 0x0F: // Intel Core (65nm)
   126                 switch (stepping) {
   127                   case 0x06: // B2
   128                     switch (coreCount) {
   129                       case 2:
   130                         tjMax = 80; break;
   131                       case 4:
   132                         tjMax = 90; break;
   133                       default:
   134                         tjMax = 85; break;
   135                     }
   136                     tjMax = 80; break;
   137                   case 0x0B: // G0
   138                     tjMax = 90; break;
   139                   case 0x0D: // M0
   140                     tjMax = 85; break;
   141                   default:
   142                     tjMax = 85; break;
   143                 } break;
   144               case 0x17: // Intel Core (45nm)
   145                 tjMax = 100; break;
   146               case 0x1C: // Intel Atom 
   147                 tjMax = 90; break;
   148               case 0x1A: // Intel Core i7 LGA1366 (45nm)
   149               case 0x1E: // Intel Core i5, i7 LGA1156 (45nm)
   150               case 0x25: // Intel Core i3, i5, i7 LGA1156 (32nm)
   151                 uint eax, edx;
   152                 if (WinRing0.Rdmsr(IA32_TEMPERATURE_TARGET, out eax, out edx)) {
   153                   tjMax = (eax >> 16) & 0xFF;
   154                 } else {
   155                   tjMax = 100;
   156                 }
   157                 if (WinRing0.Rdmsr(MSR_PLATFORM_INFO, out eax, out edx)) {
   158                   maxNehalemMultiplier = (eax >> 8) & 0xff;
   159                 }
   160                 break;
   161               default:
   162                 tjMax = 100; break;
   163             }
   164           } break;
   165         default: tjMax = 100; break;
   166       }
   167 
   168       // check if processor supports a digital thermal sensor
   169       if (cpuidData.GetLength(0) > 6 && (cpuidData[6, 0] & 1) != 0) {
   170         coreTemperatures = new Sensor[coreCount];
   171         for (int i = 0; i < coreTemperatures.Length; i++) {
   172           coreTemperatures[i] = new Sensor(CoreString(i), i, tjMax,
   173             SensorType.Temperature, this);
   174         }
   175       } else {
   176         coreTemperatures = new Sensor[0];
   177       }
   178 
   179       if (coreCount > 1)
   180         totalLoad = new Sensor("CPU Total", 0, SensorType.Load, this);
   181       else
   182         totalLoad = null;
   183       coreLoads = new Sensor[coreCount];
   184       for (int i = 0; i < coreLoads.Length; i++)
   185         coreLoads[i] = new Sensor(CoreString(i), i + 1,
   186           SensorType.Load, this);     
   187       cpuLoad = new CPULoad(coreCount, logicalProcessorsPerCore);
   188       if (cpuLoad.IsAvailable) {
   189         foreach (Sensor sensor in coreLoads)
   190           ActivateSensor(sensor);
   191         if (totalLoad != null)
   192           ActivateSensor(totalLoad);
   193       }
   194 
   195       lastCount = 0;
   196       lastTime = 0;
   197       busClock = new Sensor("Bus Speed", 0, SensorType.Clock, this);      
   198       coreClocks = new Sensor[coreCount];
   199       for (int i = 0; i < coreClocks.Length; i++) {
   200         coreClocks[i] =
   201           new Sensor(CoreString(i), i + 1, SensorType.Clock, this);
   202         ActivateSensor(coreClocks[i]);
   203       }
   204       
   205       Update();                   
   206     }
   207 
   208     public string Name {
   209       get { return name; }
   210     }
   211 
   212     public string Identifier {
   213       get { return "/intelcpu/0"; }
   214     }
   215 
   216     public Image Icon {
   217       get { return icon; }
   218     }
   219 
   220     private void AppendMSRData(StringBuilder r, uint msr, int core) {
   221       uint eax, edx;
   222       if (WinRing0.RdmsrTx(msr, out eax, out edx,
   223          (UIntPtr)(1 << (int)(logicalProcessorsPerCore * core)))) {
   224         r.Append(" ");
   225         r.Append((msr).ToString("X8"));
   226         r.Append("  ");
   227         r.Append((edx).ToString("X8"));
   228         r.Append("  ");
   229         r.Append((eax).ToString("X8"));
   230         r.AppendLine();
   231       }
   232     }
   233 
   234     public string GetReport() {
   235       StringBuilder r = new StringBuilder();
   236 
   237       r.AppendLine("Intel CPU");
   238       r.AppendLine();
   239       r.AppendFormat("Name: {0}{1}", name, Environment.NewLine);
   240       r.AppendFormat("Number of cores: {0}{1}", coreCount, 
   241         Environment.NewLine);
   242       r.AppendFormat("Threads per core: {0}{1}", logicalProcessorsPerCore,
   243         Environment.NewLine);
   244       r.AppendFormat("TjMax: {0}{1}", tjMax, Environment.NewLine);
   245       r.AppendLine();
   246 
   247       for (int i = 0; i < coreCount; i++) {
   248         r.AppendLine("MSR Core #" + (i + 1));
   249         r.AppendLine();
   250         r.AppendLine(" MSR       EDX       EAX");
   251         AppendMSRData(r, MSR_PLATFORM_INFO, i);
   252         AppendMSRData(r, IA32_PERF_STATUS, i);
   253         AppendMSRData(r, IA32_THERM_STATUS_MSR, i);
   254         AppendMSRData(r, IA32_TEMPERATURE_TARGET, i);
   255         r.AppendLine();
   256       }
   257 
   258       return r.ToString();
   259     }
   260 
   261     public void Update() {
   262             
   263       for (int i = 0; i < coreTemperatures.Length; i++) {
   264         uint eax, edx;
   265         if (WinRing0.RdmsrTx(
   266           IA32_THERM_STATUS_MSR, out eax, out edx, 
   267             (UIntPtr)(1 << (int)(logicalProcessorsPerCore * i)))) 
   268         {
   269           // if reading is valid
   270           if ((eax & 0x80000000) != 0) {
   271             // get the dist from tjMax from bits 22:16
   272             coreTemperatures[i].Value = tjMax - ((eax & 0x007F0000) >> 16);
   273             ActivateSensor(coreTemperatures[i]);
   274           } else {
   275             DeactivateSensor(coreTemperatures[i]);
   276           }
   277         }        
   278       }
   279 
   280       if (cpuLoad.IsAvailable) {
   281         cpuLoad.Update();
   282         for (int i = 0; i < coreLoads.Length; i++)
   283           coreLoads[i].Value = cpuLoad.GetCoreLoad(i);
   284         if (totalLoad != null)
   285           totalLoad.Value = cpuLoad.GetTotalLoad();
   286       }
   287      
   288       uint lsb, msb;
   289       bool valid = WinRing0.RdtscTx(out lsb, out msb, (UIntPtr)1);
   290       long time = Stopwatch.GetTimestamp();
   291       ulong count = ((ulong)msb << 32) | lsb;
   292       double delta = ((double)(time - lastTime)) / Stopwatch.Frequency;
   293       if (valid && delta > 0.5) {
   294         double maxClock = (count - lastCount) / (1e6 * delta);
   295         double busClock = 0;
   296         uint eax, edx;
   297         for (int i = 0; i < coreClocks.Length; i++) {
   298           System.Threading.Thread.Sleep(1);
   299           if (WinRing0.RdmsrTx(IA32_PERF_STATUS, out eax, out edx,
   300             (UIntPtr)(1 << (int)(logicalProcessorsPerCore * i)))) {
   301             if (maxNehalemMultiplier > 0) { // Core i3, i5, i7
   302               uint nehalemMultiplier = eax & 0xff;
   303               coreClocks[i].Value =
   304                 (float)(nehalemMultiplier * maxClock / maxNehalemMultiplier);
   305               busClock = (float)(maxClock / maxNehalemMultiplier);
   306             } else { // Core 2
   307               uint multiplier = (eax >> 8) & 0x1f;
   308               uint maxMultiplier = (edx >> 8) & 0x1f;
   309               // factor = multiplier * 2 to handle non integer multipliers 
   310               uint factor = (multiplier << 1) | ((eax >> 14) & 1);
   311               uint maxFactor = (maxMultiplier << 1) | ((edx >> 14) & 1);
   312               if (maxFactor > 0) {
   313                 coreClocks[i].Value = (float)(factor * maxClock / maxFactor);
   314                 busClock = (float)(2 * maxClock / maxFactor);
   315               }
   316             }  
   317           } else { // Intel Pentium 4
   318             // if IA32_PERF_STATUS is not available, assume maxClock
   319             coreClocks[i].Value = (float)maxClock;
   320           }
   321         }
   322         if (busClock > 0) {
   323           this.busClock.Value = (float)busClock;
   324           ActivateSensor(this.busClock);
   325         }
   326       }
   327       lastCount = count;
   328       lastTime = time;
   329     }
   330   }  
   331 }