mirror of
https://github.com/openhardwaremonitor/openhardwaremonitor
synced 2025-08-22 09:57:20 +00:00
382 lines
14 KiB
C#
382 lines
14 KiB
C#
/*
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This Source Code Form is subject to the terms of the Mozilla Public
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License, v. 2.0. If a copy of the MPL was not distributed with this
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file, You can obtain one at http://mozilla.org/MPL/2.0/.
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Copyright (C) 2009-2011 Michael Möller <mmoeller@openhardwaremonitor.org>
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*/
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using System;
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using System.Globalization;
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using System.Text;
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namespace OpenHardwareMonitor.Hardware.CPU {
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internal sealed class IntelCPU : GenericCPU {
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private enum Microarchitecture {
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Unknown,
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NetBurst,
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Core,
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Atom,
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Nehalem,
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SandyBridge
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}
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private readonly Sensor[] coreTemperatures;
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private readonly Sensor packageTemperature;
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private readonly Sensor[] coreClocks;
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private readonly Sensor busClock;
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private readonly Sensor[] powerSensors;
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private readonly Microarchitecture microarchitecture;
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private readonly double timeStampCounterMultiplier;
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private const uint IA32_THERM_STATUS_MSR = 0x019C;
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private const uint IA32_TEMPERATURE_TARGET = 0x01A2;
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private const uint IA32_PERF_STATUS = 0x0198;
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private const uint MSR_PLATFORM_INFO = 0xCE;
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private const uint IA32_PACKAGE_THERM_STATUS = 0x1B1;
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private const uint MSR_RAPL_POWER_UNIT = 0x606;
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private const uint MSR_PKG_ENERY_STATUS = 0x611;
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private const uint MSR_DRAM_ENERGY_STATUS = 0x619;
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private const uint MSR_PP0_ENERY_STATUS = 0x639;
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private const uint MSR_PP1_ENERY_STATUS = 0x641;
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private readonly uint[] energyStatusMSRs = { MSR_PKG_ENERY_STATUS,
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MSR_PP0_ENERY_STATUS, MSR_PP1_ENERY_STATUS, MSR_DRAM_ENERGY_STATUS };
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private readonly string[] powerSensorLabels =
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{ "CPU Package", "CPU Cores", "CPU Graphics", "CPU DRAM" };
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private float energyUnitMultiplier = 0;
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private DateTime[] lastEnergyTime;
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private uint[] lastEnergyConsumed;
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private float[] Floats(float f) {
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float[] result = new float[coreCount];
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for (int i = 0; i < coreCount; i++)
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result[i] = f;
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return result;
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}
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private float[] GetTjMaxFromMSR() {
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uint eax, edx;
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float[] result = new float[coreCount];
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for (int i = 0; i < coreCount; i++) {
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if (Ring0.RdmsrTx(IA32_TEMPERATURE_TARGET, out eax,
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out edx, 1UL << cpuid[i][0].Thread)) {
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result[i] = (eax >> 16) & 0xFF;
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} else {
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result[i] = 100;
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}
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}
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return result;
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}
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public IntelCPU(int processorIndex, CPUID[][] cpuid, ISettings settings)
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: base(processorIndex, cpuid, settings) {
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// set tjMax
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float[] tjMax;
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switch (family) {
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case 0x06: {
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switch (model) {
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case 0x0F: // Intel Core 2 (65nm)
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microarchitecture = Microarchitecture.Core;
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switch (stepping) {
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case 0x06: // B2
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switch (coreCount) {
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case 2:
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tjMax = Floats(80 + 10); break;
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case 4:
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tjMax = Floats(90 + 10); break;
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default:
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tjMax = Floats(85 + 10); break;
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}
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tjMax = Floats(80 + 10); break;
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case 0x0B: // G0
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tjMax = Floats(90 + 10); break;
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case 0x0D: // M0
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tjMax = Floats(85 + 10); break;
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default:
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tjMax = Floats(85 + 10); break;
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} break;
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case 0x17: // Intel Core 2 (45nm)
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microarchitecture = Microarchitecture.Core;
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tjMax = Floats(100); break;
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case 0x1C: // Intel Atom (45nm)
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microarchitecture = Microarchitecture.Atom;
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switch (stepping) {
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case 0x02: // C0
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tjMax = Floats(90); break;
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case 0x0A: // A0, B0
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tjMax = Floats(100); break;
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default:
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tjMax = Floats(90); break;
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} break;
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case 0x1A: // Intel Core i7 LGA1366 (45nm)
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case 0x1E: // Intel Core i5, i7 LGA1156 (45nm)
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case 0x1F: // Intel Core i5, i7
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case 0x25: // Intel Core i3, i5, i7 LGA1156 (32nm)
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case 0x2C: // Intel Core i7 LGA1366 (32nm) 6 Core
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case 0x2E: // Intel Xeon Processor 7500 series
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microarchitecture = Microarchitecture.Nehalem;
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tjMax = GetTjMaxFromMSR();
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break;
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case 0x2A: // Intel Core i5, i7 2xxx LGA1155 (32nm)
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case 0x2D: // Next Generation Intel Xeon Processor
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microarchitecture = Microarchitecture.SandyBridge;
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tjMax = GetTjMaxFromMSR();
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break;
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default:
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microarchitecture = Microarchitecture.Unknown;
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tjMax = Floats(100);
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break;
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}
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} break;
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case 0x0F: {
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switch (model) {
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case 0x00: // Pentium 4 (180nm)
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case 0x01: // Pentium 4 (130nm)
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case 0x02: // Pentium 4 (130nm)
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case 0x03: // Pentium 4, Celeron D (90nm)
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case 0x04: // Pentium 4, Pentium D, Celeron D (90nm)
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case 0x06: // Pentium 4, Pentium D, Celeron D (65nm)
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microarchitecture = Microarchitecture.NetBurst;
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tjMax = Floats(100);
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break;
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default:
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microarchitecture = Microarchitecture.Unknown;
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tjMax = Floats(100);
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break;
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}
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} break;
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default:
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microarchitecture = Microarchitecture.Unknown;
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tjMax = Floats(100);
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break;
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}
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// set timeStampCounterMultiplier
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switch (microarchitecture) {
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case Microarchitecture.NetBurst:
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case Microarchitecture.Atom:
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case Microarchitecture.Core: {
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uint eax, edx;
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if (Ring0.Rdmsr(IA32_PERF_STATUS, out eax, out edx)) {
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timeStampCounterMultiplier =
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((edx >> 8) & 0x1f) + 0.5 * ((edx >> 14) & 1);
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}
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} break;
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case Microarchitecture.Nehalem:
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case Microarchitecture.SandyBridge: {
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uint eax, edx;
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if (Ring0.Rdmsr(MSR_PLATFORM_INFO, out eax, out edx)) {
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timeStampCounterMultiplier = (eax >> 8) & 0xff;
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}
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} break;
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default: {
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timeStampCounterMultiplier = 1;
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uint eax, edx;
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if (Ring0.Rdmsr(IA32_PERF_STATUS, out eax, out edx)) {
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timeStampCounterMultiplier =
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((edx >> 8) & 0x1f) + 0.5 * ((edx >> 14) & 1);
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}
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} break;
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}
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// check if processor supports a digital thermal sensor at core level
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if (cpuid[0][0].Data.GetLength(0) > 6 &&
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(cpuid[0][0].Data[6, 0] & 1) != 0) {
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coreTemperatures = new Sensor[coreCount];
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for (int i = 0; i < coreTemperatures.Length; i++) {
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coreTemperatures[i] = new Sensor(CoreString(i), i,
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SensorType.Temperature, this, new[] {
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new ParameterDescription(
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"TjMax [°C]", "TjMax temperature of the core sensor.\n" +
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"Temperature = TjMax - TSlope * Value.", tjMax[i]),
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new ParameterDescription("TSlope [°C]",
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"Temperature slope of the digital thermal sensor.\n" +
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"Temperature = TjMax - TSlope * Value.", 1)}, settings);
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ActivateSensor(coreTemperatures[i]);
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}
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} else {
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coreTemperatures = new Sensor[0];
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}
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// check if processor supports a digital thermal sensor at package level
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if (cpuid[0][0].Data.GetLength(0) > 6 &&
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(cpuid[0][0].Data[6, 0] & 0x40) != 0) {
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packageTemperature = new Sensor("CPU Package",
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coreTemperatures.Length, SensorType.Temperature, this, new[] {
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new ParameterDescription(
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"TjMax [°C]", "TjMax temperature of the package sensor.\n" +
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"Temperature = TjMax - TSlope * Value.", tjMax[0]),
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new ParameterDescription("TSlope [°C]",
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"Temperature slope of the digital thermal sensor.\n" +
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"Temperature = TjMax - TSlope * Value.", 1)}, settings);
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ActivateSensor(packageTemperature);
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}
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busClock = new Sensor("Bus Speed", 0, SensorType.Clock, this, settings);
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coreClocks = new Sensor[coreCount];
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for (int i = 0; i < coreClocks.Length; i++) {
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coreClocks[i] =
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new Sensor(CoreString(i), i + 1, SensorType.Clock, this, settings);
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if (HasTimeStampCounter)
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ActivateSensor(coreClocks[i]);
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}
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if (microarchitecture == Microarchitecture.SandyBridge) {
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powerSensors = new Sensor[energyStatusMSRs.Length];
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lastEnergyTime = new DateTime[energyStatusMSRs.Length];
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lastEnergyConsumed = new uint[energyStatusMSRs.Length];
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uint eax, edx;
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if (Ring0.Rdmsr(MSR_RAPL_POWER_UNIT, out eax, out edx))
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energyUnitMultiplier = 1.0f / (1 << (int)((eax >> 8) & 0x1FF));
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if (energyUnitMultiplier != 0) {
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for (int i = 0; i < energyStatusMSRs.Length; i++) {
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if (!Ring0.Rdmsr(energyStatusMSRs[i], out eax, out edx))
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continue;
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lastEnergyTime[i] = DateTime.UtcNow;
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lastEnergyConsumed[i] = eax;
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powerSensors[i] = new Sensor(powerSensorLabels[i], i,
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SensorType.Power, this, settings);
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ActivateSensor(powerSensors[i]);
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}
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}
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}
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Update();
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}
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protected override uint[] GetMSRs() {
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return new[] {
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MSR_PLATFORM_INFO,
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IA32_PERF_STATUS ,
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IA32_THERM_STATUS_MSR,
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IA32_TEMPERATURE_TARGET,
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IA32_PACKAGE_THERM_STATUS,
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MSR_RAPL_POWER_UNIT,
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MSR_PKG_ENERY_STATUS,
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MSR_DRAM_ENERGY_STATUS,
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MSR_PP0_ENERY_STATUS,
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MSR_PP1_ENERY_STATUS
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};
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}
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public override string GetReport() {
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StringBuilder r = new StringBuilder();
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r.Append(base.GetReport());
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r.Append("Microarchitecture: ");
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r.AppendLine(microarchitecture.ToString());
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r.Append("Time Stamp Counter Multiplier: ");
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r.AppendLine(timeStampCounterMultiplier.ToString(
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CultureInfo.InvariantCulture));
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r.AppendLine();
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return r.ToString();
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}
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public override void Update() {
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base.Update();
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for (int i = 0; i < coreTemperatures.Length; i++) {
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uint eax, edx;
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if (Ring0.RdmsrTx(
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IA32_THERM_STATUS_MSR, out eax, out edx,
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1UL << cpuid[i][0].Thread)) {
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// if reading is valid
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if ((eax & 0x80000000) != 0) {
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// get the dist from tjMax from bits 22:16
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float deltaT = ((eax & 0x007F0000) >> 16);
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float tjMax = coreTemperatures[i].Parameters[0].Value;
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float tSlope = coreTemperatures[i].Parameters[1].Value;
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coreTemperatures[i].Value = tjMax - tSlope * deltaT;
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} else {
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coreTemperatures[i].Value = null;
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}
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}
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}
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if (packageTemperature != null) {
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uint eax, edx;
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if (Ring0.RdmsrTx(
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IA32_PACKAGE_THERM_STATUS, out eax, out edx,
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1UL << cpuid[0][0].Thread)) {
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// get the dist from tjMax from bits 22:16
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float deltaT = ((eax & 0x007F0000) >> 16);
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float tjMax = packageTemperature.Parameters[0].Value;
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float tSlope = packageTemperature.Parameters[1].Value;
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packageTemperature.Value = tjMax - tSlope * deltaT;
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} else {
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packageTemperature.Value = null;
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}
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}
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if (HasTimeStampCounter) {
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double newBusClock = 0;
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uint eax, edx;
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for (int i = 0; i < coreClocks.Length; i++) {
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System.Threading.Thread.Sleep(1);
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if (Ring0.RdmsrTx(IA32_PERF_STATUS, out eax, out edx,
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1UL << cpuid[i][0].Thread)) {
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newBusClock =
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TimeStampCounterFrequency / timeStampCounterMultiplier;
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switch (microarchitecture) {
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case Microarchitecture.Nehalem: {
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uint multiplier = eax & 0xff;
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coreClocks[i].Value = (float)(multiplier * newBusClock);
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} break;
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case Microarchitecture.SandyBridge: {
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uint multiplier = (eax >> 8) & 0xff;
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coreClocks[i].Value = (float)(multiplier * newBusClock);
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} break;
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default: {
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double multiplier =
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((eax >> 8) & 0x1f) + 0.5 * ((eax >> 14) & 1);
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coreClocks[i].Value = (float)(multiplier * newBusClock);
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} break;
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}
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} else {
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// if IA32_PERF_STATUS is not available, assume TSC frequency
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coreClocks[i].Value = (float)TimeStampCounterFrequency;
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}
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}
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if (newBusClock > 0) {
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this.busClock.Value = (float)newBusClock;
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ActivateSensor(this.busClock);
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}
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}
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if (powerSensors != null) {
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foreach (Sensor sensor in powerSensors) {
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if (sensor == null)
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continue;
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uint eax, edx;
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if (!Ring0.Rdmsr(energyStatusMSRs[sensor.Index], out eax, out edx))
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continue;
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DateTime time = DateTime.UtcNow;
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uint energyConsumed = eax;
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float deltaTime =
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(float)(time - lastEnergyTime[sensor.Index]).TotalSeconds;
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if (deltaTime < 0.01)
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continue;
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sensor.Value = energyUnitMultiplier * unchecked(
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energyConsumed - lastEnergyConsumed[sensor.Index]) / deltaTime;
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lastEnergyTime[sensor.Index] = time;
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lastEnergyConsumed[sensor.Index] = energyConsumed;
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}
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}
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}
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}
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}
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