OpenHardwareMonitor: Hardware/CPU/AMD10CPU.cs@9b09e2ee0968

     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) 2009-2013 Michael Möller <mmoeller@openhardwaremonitor.org>

     9 */

    11 using System;

    12 using System.Collections.Generic;

    13 using System.Diagnostics;

    14 using System.Globalization;

    15 using System.IO;

    16 using System.Text;

    17 using System.Threading;

    19 namespace OpenHardwareMonitor.Hardware.CPU {

    21   internal sealed class AMD10CPU : AMDCPU {

    23     private readonly Sensor coreTemperature;

    24     private readonly Sensor[] coreClocks;

    25     private readonly Sensor busClock;

    27     private const uint PERF_CTL_0 = 0xC0010000;

    28     private const uint PERF_CTR_0 = 0xC0010004;

    29     private const uint HWCR = 0xC0010015;

    30     private const uint P_STATE_0 = 0xC0010064;

    31     private const uint COFVID_STATUS = 0xC0010071;

    33     private const byte MISCELLANEOUS_CONTROL_FUNCTION = 3;

    34     private const ushort FAMILY_10H_MISCELLANEOUS_CONTROL_DEVICE_ID = 0x1203;

    35     private const ushort FAMILY_11H_MISCELLANEOUS_CONTROL_DEVICE_ID = 0x1303;

    36     private const ushort FAMILY_12H_MISCELLANEOUS_CONTROL_DEVICE_ID = 0x1703;

    37     private const ushort FAMILY_14H_MISCELLANEOUS_CONTROL_DEVICE_ID = 0x1703;

    38     private const ushort FAMILY_15H_MODEL_00_MISC_CONTROL_DEVICE_ID = 0x1603;

    39     private const ushort FAMILY_15H_MODEL_10_MISC_CONTROL_DEVICE_ID = 0x1403;

    40     private const ushort FAMILY_16H_MODEL_00_MISC_CONTROL_DEVICE_ID = 0x1533;

    42     private const uint REPORTED_TEMPERATURE_CONTROL_REGISTER = 0xA4;

    43     private const uint CLOCK_POWER_TIMING_CONTROL_0_REGISTER = 0xD4;

    45     private readonly uint miscellaneousControlAddress;

    46     private readonly ushort miscellaneousControlDeviceId;

    48     private readonly FileStream temperatureStream;

    50     private readonly double timeStampCounterMultiplier;

    51     private readonly bool corePerformanceBoostSupport;

    53     public AMD10CPU(int processorIndex, CPUID[][] cpuid, ISettings settings)

    54       : base(processorIndex, cpuid, settings)

    55     {

    56       // AMD family 1Xh processors support only one temperature sensor

    57       coreTemperature = new Sensor(

    58         "Core" + (coreCount > 1 ? " #1 - #" + coreCount : ""), 0,

    59         SensorType.Temperature, this, new [] {

    60             new ParameterDescription("Offset [°C]", "Temperature offset.", 0)

    61           }, settings);

    63       switch (family) {

    64         case 0x10: miscellaneousControlDeviceId =

    65           FAMILY_10H_MISCELLANEOUS_CONTROL_DEVICE_ID; break;

    66         case 0x11: miscellaneousControlDeviceId =

    67           FAMILY_11H_MISCELLANEOUS_CONTROL_DEVICE_ID; break;

    68         case 0x12: miscellaneousControlDeviceId =

    69           FAMILY_12H_MISCELLANEOUS_CONTROL_DEVICE_ID; break;

    70         case 0x14: miscellaneousControlDeviceId =

    71           FAMILY_14H_MISCELLANEOUS_CONTROL_DEVICE_ID; break;

    72         case 0x15:

    73           switch (model & 0xF0) {

    74             case 0x00: miscellaneousControlDeviceId =

    75               FAMILY_15H_MODEL_00_MISC_CONTROL_DEVICE_ID; break;

    76             case 0x10: miscellaneousControlDeviceId =

    77               FAMILY_15H_MODEL_10_MISC_CONTROL_DEVICE_ID; break;

    78             default: miscellaneousControlDeviceId = 0; break;

    79           } break;

    80         case 0x16:

    81           switch (model & 0xF0) {

    82             case 0x00: miscellaneousControlDeviceId =

    83               FAMILY_16H_MODEL_00_MISC_CONTROL_DEVICE_ID; break;

    84             default: miscellaneousControlDeviceId = 0; break;

    85           } break;

    86         default: miscellaneousControlDeviceId = 0; break;

    87       }

    89       // get the pci address for the Miscellaneous Control registers

    90       miscellaneousControlAddress = GetPciAddress(

    91         MISCELLANEOUS_CONTROL_FUNCTION, miscellaneousControlDeviceId);

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

    94       coreClocks = new Sensor[coreCount];

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

    96         coreClocks[i] = new Sensor(CoreString(i), i + 1, SensorType.Clock,

    97           this, settings);

    98         if (HasTimeStampCounter)

    99           ActivateSensor(coreClocks[i]);

   100       }

   102       corePerformanceBoostSupport = (cpuid[0][0].ExtData[7, 3] & (1 << 9)) > 0;

   104       // set affinity to the first thread for all frequency estimations

   105       ulong mask = ThreadAffinity.Set(1UL << cpuid[0][0].Thread);

   107       // disable core performance boost

   108       uint hwcrEax, hwcrEdx;

   109       Ring0.Rdmsr(HWCR, out hwcrEax, out hwcrEdx);

   110       if (corePerformanceBoostSupport)

   111         Ring0.Wrmsr(HWCR, hwcrEax | (1 << 25), hwcrEdx);

   113       uint ctlEax, ctlEdx;

   114       Ring0.Rdmsr(PERF_CTL_0, out ctlEax, out ctlEdx);

   115       uint ctrEax, ctrEdx;

   116       Ring0.Rdmsr(PERF_CTR_0, out ctrEax, out ctrEdx);

   118       timeStampCounterMultiplier = estimateTimeStampCounterMultiplier();

   120       // restore the performance counter registers

   121       Ring0.Wrmsr(PERF_CTL_0, ctlEax, ctlEdx);

   122       Ring0.Wrmsr(PERF_CTR_0, ctrEax, ctrEdx);

   124       // restore core performance boost

   125       if (corePerformanceBoostSupport)

   126         Ring0.Wrmsr(HWCR, hwcrEax, hwcrEdx);

   128       // restore the thread affinity.

   129       ThreadAffinity.Set(mask);

   131       // the file reader for lm-sensors support on Linux

   132       temperatureStream = null;

   133       int p = (int)Environment.OSVersion.Platform;

   134       if ((p == 4) || (p == 128)) {

   135         string[] devicePaths = Directory.GetDirectories("/sys/class/hwmon/");

   136         foreach (string path in devicePaths) {

   137           string name = null;

   138           try {

   139             using (StreamReader reader = new StreamReader(path + "/device/name"))

   140               name = reader.ReadLine();

   141           } catch (IOException) { }

   142           switch (name) {

   143             case "k10temp":

   144               temperatureStream = new FileStream(path + "/device/temp1_input",

   145                 FileMode.Open, FileAccess.Read, FileShare.ReadWrite);

   146               break;

   147           }

   148         }

   149       }

   151       Update();

   152     }

   154     private double estimateTimeStampCounterMultiplier() {

   155       // preload the function

   156       estimateTimeStampCounterMultiplier(0);

   157       estimateTimeStampCounterMultiplier(0);

   159       // estimate the multiplier

   160       List<double> estimate = new List<double>(3);

   161       for (int i = 0; i < 3; i++)

   162         estimate.Add(estimateTimeStampCounterMultiplier(0.025));

   163       estimate.Sort();

   164       return estimate[1];

   165     }

   167     private double estimateTimeStampCounterMultiplier(double timeWindow) {

   168       uint eax, edx;

   170       // select event "076h CPU Clocks not Halted" and enable the counter

   171       Ring0.Wrmsr(PERF_CTL_0,

   172         (1 << 22) | // enable performance counter

   173         (1 << 17) | // count events in user mode

   174         (1 << 16) | // count events in operating-system mode

   175         0x76, 0x00000000);

   177       // set the counter to 0

   178       Ring0.Wrmsr(PERF_CTR_0, 0, 0);

   180       long ticks = (long)(timeWindow * Stopwatch.Frequency);

   181       uint lsbBegin, msbBegin, lsbEnd, msbEnd;

   183       long timeBegin = Stopwatch.GetTimestamp() +

   184         (long)Math.Ceiling(0.001 * ticks);

   185       long timeEnd = timeBegin + ticks;

   186       while (Stopwatch.GetTimestamp() < timeBegin) { }

   187       Ring0.Rdmsr(PERF_CTR_0, out lsbBegin, out msbBegin);

   189       while (Stopwatch.GetTimestamp() < timeEnd) { }

   190       Ring0.Rdmsr(PERF_CTR_0, out lsbEnd, out msbEnd);

   191       Ring0.Rdmsr(COFVID_STATUS, out eax, out edx);

   192       double coreMultiplier = GetCoreMultiplier(eax);

   194       ulong countBegin = ((ulong)msbBegin << 32) | lsbBegin;

   195       ulong countEnd = ((ulong)msbEnd << 32) | lsbEnd;

   197       double coreFrequency = 1e-6 *

   198         (((double)(countEnd - countBegin)) * Stopwatch.Frequency) /

   199         (timeEnd - timeBegin);

   201       double busFrequency = coreFrequency / coreMultiplier;

   203       return 0.25 * Math.Round(4 * TimeStampCounterFrequency / busFrequency);

   204     }

   206     protected override uint[] GetMSRs() {

   207       return new uint[] { PERF_CTL_0, PERF_CTR_0, HWCR, P_STATE_0,

   208         COFVID_STATUS };

   209     }

   211     public override string GetReport() {

   212       StringBuilder r = new StringBuilder();

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

   215       r.Append("Miscellaneous Control Address: 0x");

   216       r.AppendLine((miscellaneousControlAddress).ToString("X",

   217         CultureInfo.InvariantCulture));

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

   219       r.AppendLine(timeStampCounterMultiplier.ToString(

   220         CultureInfo.InvariantCulture));

   221       if (family == 0x14) {

   222         uint value = 0;

   223         Ring0.ReadPciConfig(miscellaneousControlAddress,

   224           CLOCK_POWER_TIMING_CONTROL_0_REGISTER, out value);

   225         r.Append("PCI Register D18F3xD4: ");

   226         r.AppendLine(value.ToString("X8", CultureInfo.InvariantCulture));

   227       }

   228       r.AppendLine();

   230       return r.ToString();

   231     }

   233     private double GetCoreMultiplier(uint cofvidEax) {

   234       switch (family) {

   235         case 0x10:

   236         case 0x11:

   237         case 0x15:

   238         case 0x16: {

   239             // 8:6 CpuDid: current core divisor ID

   240             // 5:0 CpuFid: current core frequency ID

   241             uint cpuDid = (cofvidEax >> 6) & 7;

   242             uint cpuFid = cofvidEax & 0x1F;

   243             return 0.5 * (cpuFid + 0x10) / (1 << (int)cpuDid);

   244           }

   245         case 0x12: {

   246             // 8:4 CpuFid: current CPU core frequency ID

   247             // 3:0 CpuDid: current CPU core divisor ID

   248             uint cpuFid = (cofvidEax >> 4) & 0x1F;

   249             uint cpuDid = cofvidEax & 0xF;

   250             double divisor;

   251             switch (cpuDid) {

   252               case 0: divisor = 1; break;

   253               case 1: divisor = 1.5; break;

   254               case 2: divisor = 2; break;

   255               case 3: divisor = 3; break;

   256               case 4: divisor = 4; break;

   257               case 5: divisor = 6; break;

   258               case 6: divisor = 8; break;

   259               case 7: divisor = 12; break;

   260               case 8: divisor = 16; break;

   261               default: divisor = 1; break;

   262             }

   263             return (cpuFid + 0x10) / divisor;

   264           }

   265         case 0x14: {

   266             // 8:4: current CPU core divisor ID most significant digit

   267             // 3:0: current CPU core divisor ID least significant digit

   268             uint divisorIdMSD = (cofvidEax >> 4) & 0x1F;

   269             uint divisorIdLSD = cofvidEax & 0xF;

   270             uint value = 0;

   271             Ring0.ReadPciConfig(miscellaneousControlAddress,

   272               CLOCK_POWER_TIMING_CONTROL_0_REGISTER, out value);

   273             uint frequencyId = value & 0x1F;

   274             return (frequencyId + 0x10) /

   275               (divisorIdMSD + (divisorIdLSD * 0.25) + 1);

   276           }

   277         default:

   278           return 1;

   279       }

   280     }

   282     private string ReadFirstLine(Stream stream) {

   283       StringBuilder sb = new StringBuilder();

   284       try {

   285         stream.Seek(0, SeekOrigin.Begin);

   286         int b = stream.ReadByte();

   287         while (b != -1 && b != 10) {

   288           sb.Append((char)b);

   289           b = stream.ReadByte();

   290         }

   291       } catch { }

   292       return sb.ToString();

   293     }

   295     public override void Update() {

   296       base.Update();

   298       if (temperatureStream == null) {

   299         if (miscellaneousControlAddress != Ring0.InvalidPciAddress) {

   300           uint value;

   301           if (Ring0.ReadPciConfig(miscellaneousControlAddress,

   302             REPORTED_TEMPERATURE_CONTROL_REGISTER, out value)) {

   303             if (family == 0x15 && (value & 0x30000) == 0x30000) {

   304               if ((model & 0xF0) == 0x00) {

   305                 coreTemperature.Value = ((value >> 21) & 0x7FC) / 8.0f +

   306                   coreTemperature.Parameters[0].Value - 49;

   307               } else {

   308                 coreTemperature.Value = ((value >> 21) & 0x7FF) / 8.0f +

   309                   coreTemperature.Parameters[0].Value - 49;

   310               }

   311             } else if (family == 0x16 &&

   312               ((value & 0x30000) == 0x30000 || (value & 0x80000) == 0x80000)) {

   313                 coreTemperature.Value = ((value >> 21) & 0x7FF) / 8.0f +

   314                   coreTemperature.Parameters[0].Value - 49;

   315             } else {

   316               coreTemperature.Value = ((value >> 21) & 0x7FF) / 8.0f +

   317                 coreTemperature.Parameters[0].Value;

   318             }

   319             ActivateSensor(coreTemperature);

   320           } else {

   321             DeactivateSensor(coreTemperature);

   322           }

   323         }

   324       } else {

   325         string s = ReadFirstLine(temperatureStream);

   326         try {

   327           coreTemperature.Value = 0.001f *

   328             long.Parse(s, CultureInfo.InvariantCulture);

   329           ActivateSensor(coreTemperature);

   330         } catch {

   331           DeactivateSensor(coreTemperature);

   332         }

   333       }

   335       if (HasTimeStampCounter) {

   336         double newBusClock = 0;

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

   339           Thread.Sleep(1);

   341           uint curEax, curEdx;

   342           if (Ring0.RdmsrTx(COFVID_STATUS, out curEax, out curEdx,

   343             1UL << cpuid[i][0].Thread))

   344           {

   345             double multiplier;

   346             multiplier = GetCoreMultiplier(curEax);

   348             coreClocks[i].Value =

   349               (float)(multiplier * TimeStampCounterFrequency /

   350               timeStampCounterMultiplier);

   351             newBusClock =

   352               (float)(TimeStampCounterFrequency / timeStampCounterMultiplier);

   353           } else {

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

   355           }

   356         }

   358         if (newBusClock > 0) {

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

   360           ActivateSensor(this.busClock);

   361         }

   362       }

   363     }

   365     public override void Close() {

   366       if (temperatureStream != null) {

   367         temperatureStream.Close();

   368       }

   369       base.Close();

   370     }

   371   }

   372 }

author	StephaneLenclud
	Thu, 18 Apr 2013 23:25:10 +0200
branch	MiniDisplay
changeset 444	9b09e2ee0968
parent 344	3145aadca3d2
permissions	-rw-r--r--