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.Drawing;
moel@24: using System.Diagnostics;
moel@79: using System.Globalization;
moel@1: using System.Reflection;
moel@63: using System.Runtime.InteropServices;
moel@63: using System.Threading;
moel@1: using System.Text;
moel@1:
moel@1: namespace OpenHardwareMonitor.Hardware.CPU {
moel@31: public class IntelCPU : Hardware, IHardware {
moel@1:
moel@100: private int processorIndex;
moel@90: private CPUID[][] cpuid;
moel@90: private int coreCount;
moel@90:
moel@1: private string name;
moel@1: private Image icon;
moel@1:
moel@46: private uint family;
moel@46: private uint model;
moel@46: private uint stepping;
moel@46:
moel@1: private Sensor[] coreTemperatures;
moel@63:
moel@24: private Sensor totalLoad;
moel@24: private Sensor[] coreLoads;
moel@44: private Sensor[] coreClocks;
moel@90: private Sensor busClock;
moel@79: private bool hasTSC;
moel@79: private bool invariantTSC;
moel@79: private double estimatedMaxClock;
moel@79:
moel@26: private CPULoad cpuLoad;
moel@44:
moel@79: private ulong lastTimeStampCount;
moel@44: private long lastTime;
moel@79: private uint maxNehalemMultiplier = 0;
moel@26:
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@49: private string CoreString(int i) {
moel@49: if (coreCount == 1)
moel@49: return "CPU Core";
moel@49: else
moel@49: return "CPU Core #" + (i + 1);
moel@49: }
moel@49:
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@100: public IntelCPU(int processorIndex, CPUID[][] cpuid) {
moel@90:
moel@100: this.processorIndex = processorIndex;
moel@90: this.cpuid = cpuid;
moel@90: this.coreCount = cpuid.Length;
moel@90: this.name = cpuid[0][0].Name;
moel@1: this.icon = Utilities.EmbeddedResources.GetImage("cpu.png");
moel@46:
moel@90: this.family = cpuid[0][0].Family;
moel@90: this.model = cpuid[0][0].Model;
moel@90: this.stepping = cpuid[0][0].Stepping;
moel@63:
moel@69: float[] tjMax;
moel@49: switch (family) {
moel@49: case 0x06: {
moel@49: switch (model) {
moel@49: case 0x0F: // Intel Core (65nm)
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@49: case 0x17: // Intel Core (45nm)
moel@69: tjMax = Floats(100); break;
moel@114: case 0x1C: // Intel Atom (45nm)
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@114: } break;
moel@49: case 0x1A: // Intel Core i7 LGA1366 (45nm)
moel@49: case 0x1E: // Intel Core i5, i7 LGA1156 (45nm)
moel@49: case 0x25: // Intel Core i3, i5, i7 LGA1156 (32nm)
moel@91: case 0x2C: // Intel Core i7 LGA1366 (32nm) 6 Core
moel@49: uint eax, edx;
moel@69: tjMax = new float[coreCount];
moel@69: for (int i = 0; i < coreCount; i++) {
moel@69: if (WinRing0.RdmsrTx(IA32_TEMPERATURE_TARGET, out eax,
moel@90: out edx, (UIntPtr)(1L << cpuid[i][0].Thread)))
moel@69: {
moel@69: tjMax[i] = (eax >> 16) & 0xFF;
moel@69: } else {
moel@69: tjMax[i] = 100;
moel@69: }
moel@49: }
moel@49: if (WinRing0.Rdmsr(MSR_PLATFORM_INFO, out eax, out edx)) {
moel@49: maxNehalemMultiplier = (eax >> 8) & 0xff;
moel@49: }
moel@49: break;
moel@49: default:
moel@69: tjMax = Floats(100); break;
moel@49: }
moel@49: } break;
moel@69: default: tjMax = Floats(100); break;
moel@49: }
moel@1:
moel@44: // check if processor supports a digital thermal sensor
moel@90: if (cpuid[0][0].Data.GetLength(0) > 6 &&
moel@90: (cpuid[0][0].Data[6, 0] & 1) != 0)
moel@90: {
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@63: SensorType.Temperature, this, new ParameterDescription[] {
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@63: "Temperature = TjMax - TSlope * Value.", 1)});
moel@155: ActivateSensor(coreTemperatures[i]);
moel@44: }
moel@44: } else {
moel@44: coreTemperatures = new Sensor[0];
moel@1: }
moel@49:
moel@49: if (coreCount > 1)
moel@49: totalLoad = new Sensor("CPU Total", 0, SensorType.Load, this);
moel@49: else
moel@49: totalLoad = null;
moel@24: coreLoads = new Sensor[coreCount];
moel@49: for (int i = 0; i < coreLoads.Length; i++)
moel@49: coreLoads[i] = new Sensor(CoreString(i), i + 1,
moel@44: SensorType.Load, this);
moel@90: cpuLoad = new CPULoad(cpuid);
moel@26: if (cpuLoad.IsAvailable) {
moel@26: foreach (Sensor sensor in coreLoads)
moel@26: ActivateSensor(sensor);
moel@49: if (totalLoad != null)
moel@49: ActivateSensor(totalLoad);
moel@26: }
moel@26:
moel@79: // check if processor has TSC
moel@90: if (cpuid[0][0].Data.GetLength(0) > 1
moel@90: && (cpuid[0][0].Data[1, 3] & 0x10) != 0)
moel@79: hasTSC = true;
moel@79: else
moel@79: hasTSC = false;
moel@79:
moel@79: // check if processor supports invariant TSC
moel@90: if (cpuid[0][0].ExtData.GetLength(0) > 7
moel@90: && (cpuid[0][0].ExtData[7, 3] & 0x100) != 0)
moel@79: invariantTSC = true;
moel@79: else
moel@79: invariantTSC = false;
moel@79:
moel@79: // preload the function
moel@79: EstimateMaxClock(0);
moel@79: EstimateMaxClock(0);
moel@79:
moel@79: // estimate the max clock in MHz
moel@97: List<double> estimatedMaxClocks = new List<double>(3);
moel@97: for (int i = 0; i < 3; i++)
moel@97: estimatedMaxClocks.Add(1e-6 * EstimateMaxClock(0.025));
moel@97: estimatedMaxClocks.Sort();
moel@97: estimatedMaxClock = estimatedMaxClocks[1];
moel@79:
moel@79: lastTimeStampCount = 0;
moel@44: lastTime = 0;
moel@44: busClock = new Sensor("Bus Speed", 0, SensorType.Clock, this);
moel@44: coreClocks = new Sensor[coreCount];
moel@44: for (int i = 0; i < coreClocks.Length; i++) {
moel@49: coreClocks[i] =
moel@49: new Sensor(CoreString(i), i + 1, SensorType.Clock, this);
moel@79: if (hasTSC)
moel@79: ActivateSensor(coreClocks[i]);
moel@44: }
moel@44:
moel@1: Update();
moel@1: }
moel@1:
moel@110: public override string Name {
moel@1: get { return name; }
moel@1: }
moel@1:
moel@110: public override Identifier Identifier {
moel@109: get { return new Identifier("intelcpu", processorIndex.ToString()); }
moel@1: }
moel@1:
moel@110: public override Image Icon {
moel@1: get { return icon; }
moel@1: }
moel@1:
moel@90: private void AppendMSRData(StringBuilder r, uint msr, int thread) {
moel@49: uint eax, edx;
moel@90: if (WinRing0.RdmsrTx(msr, out eax, out edx, (UIntPtr)(1L << thread))) {
moel@49: r.Append(" ");
moel@49: r.Append((msr).ToString("X8"));
moel@49: r.Append(" ");
moel@49: r.Append((edx).ToString("X8"));
moel@49: r.Append(" ");
moel@49: r.Append((eax).ToString("X8"));
moel@49: r.AppendLine();
moel@49: }
moel@49: }
moel@49:
moel@110: public override string GetReport() {
moel@5: StringBuilder r = new StringBuilder();
moel@5:
moel@5: r.AppendLine("Intel CPU");
moel@5: r.AppendLine();
moel@5: r.AppendFormat("Name: {0}{1}", name, Environment.NewLine);
moel@63: r.AppendFormat("Number of Cores: {0}{1}", coreCount,
moel@22: Environment.NewLine);
moel@90: r.AppendFormat("Threads per Core: {0}{1}", cpuid[0].Length,
moel@90: Environment.NewLine);
moel@79: r.AppendLine("TSC: " +
moel@79: (hasTSC ? (invariantTSC ? "Invariant" : "Not Invariant") : "None"));
moel@79: r.AppendLine(string.Format(CultureInfo.InvariantCulture,
moel@79: "Timer Frequency: {0} MHz", Stopwatch.Frequency * 1e-6));
moel@79: r.AppendLine(string.Format(CultureInfo.InvariantCulture,
moel@79: "Max Clock: {0} MHz", Math.Round(estimatedMaxClock * 100) * 0.01));
moel@5: r.AppendLine();
moel@5:
moel@90: for (int i = 0; i < cpuid.Length; i++) {
moel@49: r.AppendLine("MSR Core #" + (i + 1));
moel@49: r.AppendLine();
moel@49: r.AppendLine(" MSR EDX EAX");
moel@90: AppendMSRData(r, MSR_PLATFORM_INFO, cpuid[i][0].Thread);
moel@90: AppendMSRData(r, IA32_PERF_STATUS, cpuid[i][0].Thread);
moel@90: AppendMSRData(r, IA32_THERM_STATUS_MSR, cpuid[i][0].Thread);
moel@90: AppendMSRData(r, IA32_TEMPERATURE_TARGET, cpuid[i][0].Thread);
moel@49: r.AppendLine();
moel@49: }
moel@49:
moel@5: return r.ToString();
moel@1: }
moel@1:
moel@79: private double EstimateMaxClock(double timeWindow) {
moel@79: long ticks = (long)(timeWindow * Stopwatch.Frequency);
moel@79: uint lsbBegin, msbBegin, lsbEnd, msbEnd;
moel@79:
moel@79: Thread.BeginThreadAffinity();
moel@97: long timeBegin = Stopwatch.GetTimestamp() +
moel@97: (long)Math.Ceiling(0.001 * ticks);
moel@79: long timeEnd = timeBegin + ticks;
moel@79: while (Stopwatch.GetTimestamp() < timeBegin) { }
moel@79: WinRing0.Rdtsc(out lsbBegin, out msbBegin);
moel@79: while (Stopwatch.GetTimestamp() < timeEnd) { }
moel@79: WinRing0.Rdtsc(out lsbEnd, out msbEnd);
moel@79: Thread.EndThreadAffinity();
moel@79:
moel@79: ulong countBegin = ((ulong)msbBegin << 32) | lsbBegin;
moel@79: ulong countEnd = ((ulong)msbEnd << 32) | lsbEnd;
moel@79:
moel@79: return (((double)(countEnd - countBegin)) * Stopwatch.Frequency) /
moel@79: (timeEnd - timeBegin);
moel@79: }
moel@79:
moel@110: public override void Update() {
moel@1: for (int i = 0; i < coreTemperatures.Length; i++) {
moel@46: uint eax, edx;
moel@46: if (WinRing0.RdmsrTx(
moel@90: IA32_THERM_STATUS_MSR, out eax, out edx,
moel@90: (UIntPtr)(1L << 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@26: if (cpuLoad.IsAvailable) {
moel@26: cpuLoad.Update();
moel@26: for (int i = 0; i < coreLoads.Length; i++)
moel@26: coreLoads[i].Value = cpuLoad.GetCoreLoad(i);
moel@49: if (totalLoad != null)
moel@49: totalLoad.Value = cpuLoad.GetTotalLoad();
moel@24: }
moel@79:
moel@79: if (hasTSC) {
moel@79: uint lsb, msb;
moel@79: WinRing0.RdtscTx(out lsb, out msb, (UIntPtr)1);
moel@79: long time = Stopwatch.GetTimestamp();
moel@79: ulong timeStampCount = ((ulong)msb << 32) | lsb;
moel@79: double delta = ((double)(time - lastTime)) / Stopwatch.Frequency;
moel@79: if (delta > 0.5) {
moel@79: double maxClock;
moel@79: if (invariantTSC)
moel@79: maxClock = (timeStampCount - lastTimeStampCount) / (1e6 * delta);
moel@79: else
moel@79: maxClock = estimatedMaxClock;
moel@79:
moel@79: double busClock = 0;
moel@79: uint eax, edx;
moel@79: for (int i = 0; i < coreClocks.Length; i++) {
moel@79: System.Threading.Thread.Sleep(1);
moel@79: if (WinRing0.RdmsrTx(IA32_PERF_STATUS, out eax, out edx,
moel@90: (UIntPtr)(1L << cpuid[i][0].Thread))) {
moel@79: if (maxNehalemMultiplier > 0) { // Core i3, i5, i7
moel@79: uint nehalemMultiplier = eax & 0xff;
moel@79: coreClocks[i].Value =
moel@79: (float)(nehalemMultiplier * maxClock / maxNehalemMultiplier);
moel@79: busClock = (float)(maxClock / maxNehalemMultiplier);
moel@79: } else { // Core 2
moel@79: uint multiplier = (eax >> 8) & 0x1f;
moel@79: uint maxMultiplier = (edx >> 8) & 0x1f;
moel@79: // factor = multiplier * 2 to handle non integer multipliers
moel@79: uint factor = (multiplier << 1) | ((eax >> 14) & 1);
moel@79: uint maxFactor = (maxMultiplier << 1) | ((edx >> 14) & 1);
moel@79: if (maxFactor > 0) {
moel@79: coreClocks[i].Value = (float)(factor * maxClock / maxFactor);
moel@79: busClock = (float)(2 * maxClock / maxFactor);
moel@79: }
moel@46: }
moel@79: } else { // Intel Pentium 4
moel@79: // if IA32_PERF_STATUS is not available, assume maxClock
moel@79: coreClocks[i].Value = (float)maxClock;
moel@79: }
moel@79: }
moel@79: if (busClock > 0) {
moel@79: this.busClock.Value = (float)busClock;
moel@79: ActivateSensor(this.busClock);
moel@46: }
moel@44: }
moel@79: lastTimeStampCount = timeStampCount;
moel@79: lastTime = time;
moel@44: }
moel@46: }
moel@46: }
moel@1: }