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@219: using System.Globalization;
moel@219: using System.Text;
moel@1: 
moel@1: namespace OpenHardwareMonitor.Hardware.CPU {
moel@191:   internal sealed class IntelCPU : GenericCPU {
moel@46: 
moel@219:     private enum Microarchitecture {
moel@219:       Unknown,
moel@219:       Core,
moel@219:       Atom,
moel@249:       Nehalem,
moel@249:       SandyBridge
moel@219:     }
moel@219: 
moel@195:     private readonly Sensor[] coreTemperatures;
moel@195:     private readonly Sensor[] coreClocks;
moel@195:     private readonly Sensor busClock;
moel@63: 
moel@219:     private readonly Microarchitecture microarchitecture;
moel@219:     private readonly double timeStampCounterMultiplier;
moel@79: 
moel@1:     private const uint IA32_THERM_STATUS_MSR = 0x019C;
moel@4:     private const uint IA32_TEMPERATURE_TARGET = 0x01A2;
moel@44:     private const uint IA32_PERF_STATUS = 0x0198;
moel@46:     private const uint MSR_PLATFORM_INFO = 0xCE;
moel@1: 
moel@69:     private float[] Floats(float f) {
moel@69:       float[] result = new float[coreCount];
moel@69:       for (int i = 0; i < coreCount; i++)
moel@69:         result[i] = f;
moel@69:       return result;
moel@69:     }
moel@69: 
moel@249:     private float[] GetTjMaxFromMSR() {
moel@249:       uint eax, edx;
moel@249:       float[] result = new float[coreCount];
moel@249:       for (int i = 0; i < coreCount; i++) {
moel@249:         if (Ring0.RdmsrTx(IA32_TEMPERATURE_TARGET, out eax,
moel@249:           out edx, 1UL << cpuid[i][0].Thread)) {
moel@249:           result[i] = (eax >> 16) & 0xFF;
moel@249:         } else {
moel@249:           result[i] = 100;
moel@249:         }
moel@249:       }
moel@249:       return result;
moel@249:     }
moel@249: 
moel@191:     public IntelCPU(int processorIndex, CPUID[][] cpuid, ISettings settings)
moel@191:       : base(processorIndex, cpuid, settings) 
moel@191:     {
moel@219:       // set tjMax
moel@69:       float[] tjMax;
moel@49:       switch (family) {
moel@49:         case 0x06: {
moel@49:             switch (model) {
moel@219:               case 0x0F: // Intel Core 2 (65nm)
moel@219:                 microarchitecture = Microarchitecture.Core;
moel@49:                 switch (stepping) {
moel@49:                   case 0x06: // B2
moel@49:                     switch (coreCount) {
moel@49:                       case 2:
moel@69:                         tjMax = Floats(80 + 10); break;
moel@49:                       case 4:
moel@69:                         tjMax = Floats(90 + 10); break;
moel@49:                       default:
moel@69:                         tjMax = Floats(85 + 10); break;
moel@49:                     }
moel@69:                     tjMax = Floats(80 + 10); break;
moel@49:                   case 0x0B: // G0
moel@69:                     tjMax = Floats(90 + 10); break;
moel@49:                   case 0x0D: // M0
moel@69:                     tjMax = Floats(85 + 10); break;
moel@49:                   default:
moel@69:                     tjMax = Floats(85 + 10); break;
moel@49:                 } break;
moel@219:               case 0x17: // Intel Core 2 (45nm)
moel@219:                 microarchitecture = Microarchitecture.Core;
moel@69:                 tjMax = Floats(100); break;
moel@114:               case 0x1C: // Intel Atom (45nm)
moel@219:                 microarchitecture = Microarchitecture.Atom;
moel@114:                 switch (stepping) {
moel@114:                   case 0x02: // C0
moel@114:                     tjMax = Floats(90); break;
moel@114:                   case 0x0A: // A0, B0
moel@114:                     tjMax = Floats(100); break;
moel@114:                   default:
moel@114:                     tjMax = Floats(90); break;
moel@191:                 } break;
moel@49:               case 0x1A: // Intel Core i7 LGA1366 (45nm)
moel@49:               case 0x1E: // Intel Core i5, i7 LGA1156 (45nm)
moel@249:               case 0x1F: // Intel Core i5, i7 
moel@49:               case 0x25: // Intel Core i3, i5, i7 LGA1156 (32nm)
moel@91:               case 0x2C: // Intel Core i7 LGA1366 (32nm) 6 Core
moel@249:               case 0x2E: // Intel Xeon Processor 7500 series
moel@219:                 microarchitecture = Microarchitecture.Nehalem;
moel@249:                 tjMax = GetTjMaxFromMSR();
moel@249:                 break;
moel@249:               case 0x2A: // Intel Core i5, i7 2xxx LGA1155 (32nm)
moel@249:               case 0x2D: // Next Generation Intel Xeon Processor
moel@249:                 microarchitecture = Microarchitecture.SandyBridge;
moel@249:                 tjMax = GetTjMaxFromMSR();
moel@49:                 break;
moel@49:               default:
moel@219:                 microarchitecture = Microarchitecture.Unknown;
moel@219:                 tjMax = Floats(100); 
moel@219:                 break;
moel@49:             }
moel@49:           } break;
moel@219:         default:
moel@219:           microarchitecture = Microarchitecture.Unknown;
moel@219:           tjMax = Floats(100); 
moel@219:           break;
moel@219:       }
moel@219: 
moel@219:       // set timeStampCounterMultiplier
moel@219:       switch (microarchitecture) {
moel@219:         case Microarchitecture.Atom:
moel@219:         case Microarchitecture.Core: {
moel@219:             uint eax, edx;
moel@236:             if (Ring0.Rdmsr(IA32_PERF_STATUS, out eax, out edx)) {
moel@219:               timeStampCounterMultiplier = 
moel@219:                 ((edx >> 8) & 0x1f) + 0.5 * ((edx >> 14) & 1);
moel@219:             }
moel@219:           } break;
moel@249:         case Microarchitecture.Nehalem: 
moel@249:         case Microarchitecture.SandyBridge: {
moel@219:             uint eax, edx;
moel@236:             if (Ring0.Rdmsr(MSR_PLATFORM_INFO, out eax, out edx)) {
moel@219:               timeStampCounterMultiplier = (eax >> 8) & 0xff;
moel@219:             }
moel@219:           } break;
moel@219:         default:
moel@219:           timeStampCounterMultiplier = 1;
moel@219:           break;
moel@49:       }
moel@1: 
moel@44:       // check if processor supports a digital thermal sensor
moel@191:       if (cpuid[0][0].Data.GetLength(0) > 6 &&
moel@191:         (cpuid[0][0].Data[6, 0] & 1) != 0) {
moel@44:         coreTemperatures = new Sensor[coreCount];
moel@44:         for (int i = 0; i < coreTemperatures.Length; i++) {
moel@134:           coreTemperatures[i] = new Sensor(CoreString(i), i,
moel@195:             SensorType.Temperature, this, new [] { 
moel@63:               new ParameterDescription(
moel@122:                 "TjMax [°C]", "TjMax temperature of the core.\n" + 
moel@69:                 "Temperature = TjMax - TSlope * Value.", tjMax[i]), 
moel@122:               new ParameterDescription("TSlope [°C]", 
moel@122:                 "Temperature slope of the digital thermal sensor.\n" + 
moel@165:                 "Temperature = TjMax - TSlope * Value.", 1)}, settings);
moel@155:           ActivateSensor(coreTemperatures[i]);
moel@44:         }
moel@44:       } else {
moel@44:         coreTemperatures = new Sensor[0];
moel@1:       }
moel@49: 
moel@191:       busClock = new Sensor("Bus Speed", 0, SensorType.Clock, this, settings);
moel@44:       coreClocks = new Sensor[coreCount];
moel@44:       for (int i = 0; i < coreClocks.Length; i++) {
moel@49:         coreClocks[i] =
moel@165:           new Sensor(CoreString(i), i + 1, SensorType.Clock, this, settings);
moel@201:         if (HasTimeStampCounter)
moel@79:           ActivateSensor(coreClocks[i]);
moel@44:       }
moel@191: 
moel@191:       Update();
moel@1:     }
moel@1: 
moel@191:     protected override uint[] GetMSRs() {
moel@195:       return new [] {
moel@191:         MSR_PLATFORM_INFO,
moel@191:         IA32_PERF_STATUS ,
moel@191:         IA32_THERM_STATUS_MSR,
moel@191:         IA32_TEMPERATURE_TARGET
moel@191:       };
moel@1:     }
moel@1: 
moel@219:     public override string GetReport() {
moel@219:       StringBuilder r = new StringBuilder();
moel@219:       r.Append(base.GetReport());
moel@219: 
moel@219:       r.Append("Time Stamp Counter Multiplier: ");
moel@219:       r.AppendLine(timeStampCounterMultiplier.ToString(
moel@219:         CultureInfo.InvariantCulture));
moel@219:       r.AppendLine();
moel@219: 
moel@219:       return r.ToString();
moel@219:     }
moel@219: 
moel@191:     public override void Update() {
moel@191:       base.Update();
moel@1: 
moel@1:       for (int i = 0; i < coreTemperatures.Length; i++) {
moel@46:         uint eax, edx;
moel@236:         if (Ring0.RdmsrTx(
moel@191:           IA32_THERM_STATUS_MSR, out eax, out edx,
moel@238:             1UL << cpuid[i][0].Thread)) {
moel@1:           // if reading is valid
moel@1:           if ((eax & 0x80000000) != 0) {
moel@1:             // get the dist from tjMax from bits 22:16
moel@63:             float deltaT = ((eax & 0x007F0000) >> 16);
moel@63:             float tjMax = coreTemperatures[i].Parameters[0].Value;
moel@63:             float tSlope = coreTemperatures[i].Parameters[1].Value;
moel@63:             coreTemperatures[i].Value = tjMax - tSlope * deltaT;
moel@24:           } else {
moel@155:             coreTemperatures[i].Value = null;
moel@1:           }
moel@79:         }
moel@24:       }
moel@24: 
moel@201:       if (HasTimeStampCounter) {
moel@191:         double newBusClock = 0;
moel@191:         uint eax, edx;
moel@191:         for (int i = 0; i < coreClocks.Length; i++) {
moel@191:           System.Threading.Thread.Sleep(1);
moel@236:           if (Ring0.RdmsrTx(IA32_PERF_STATUS, out eax, out edx,
moel@238:             1UL << cpuid[i][0].Thread)) 
moel@219:           {
moel@219:             newBusClock = 
moel@219:               TimeStampCounterFrequency / timeStampCounterMultiplier;
moel@249:             if (microarchitecture == Microarchitecture.Nehalem ||
moel@249:                 microarchitecture == Microarchitecture.SandyBridge) 
moel@249:             {
moel@219:               uint multiplier = eax & 0xff;
moel@219:               coreClocks[i].Value = (float)(multiplier * newBusClock);
moel@219:             } else {
moel@219:               double multiplier = ((eax >> 8) & 0x1f) + 0.5 * ((eax >> 14) & 1);
moel@219:               coreClocks[i].Value = (float)(multiplier * newBusClock);
moel@219:             }            
moel@219:           } else { 
moel@201:             // if IA32_PERF_STATUS is not available, assume TSC frequency
moel@201:             coreClocks[i].Value = (float)TimeStampCounterFrequency;
moel@46:           }
moel@44:         }
moel@191:         if (newBusClock > 0) {
moel@191:           this.busClock.Value = (float)newBusClock;
moel@191:           ActivateSensor(this.busClock);
moel@191:         }
moel@44:       }
moel@46:     }
moel@191:   }
moel@1: }