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@196: using System;
moel@201: using System.Collections.Generic;
moel@201: using System.Diagnostics;
moel@196: using System.Globalization;
moel@201: using System.Runtime.InteropServices;
moel@196: using System.Text;
moel@197: using System.Threading;
moel@196: 
moel@1: namespace OpenHardwareMonitor.Hardware.CPU {
moel@165: 
moel@196:   internal sealed class AMD10CPU : AMDCPU {
moel@1: 
moel@195:     private readonly Sensor coreTemperature;
moel@197:     private readonly Sensor[] coreClocks;
moel@197:     private readonly Sensor busClock;
moel@201:       
moel@201:     private const uint PERF_CTL_0 = 0xC0010000;
moel@201:     private const uint PERF_CTR_0 = 0xC0010004;
moel@201:     private const uint P_STATE_0 = 0xC0010064;
moel@197:     private const uint COFVID_STATUS = 0xC0010071;
moel@1: 
moel@196:     private const byte MISCELLANEOUS_CONTROL_FUNCTION = 3;
moel@196:     private const ushort MISCELLANEOUS_CONTROL_DEVICE_ID = 0x1203;
moel@197:     private const uint REPORTED_TEMPERATURE_CONTROL_REGISTER = 0xA4;
moel@201: 
moel@196:     private readonly uint miscellaneousControlAddress;
moel@1: 
moel@201:     private double timeStampCounterMultiplier;
moel@201: 
moel@191:     public AMD10CPU(int processorIndex, CPUID[][] cpuid, ISettings settings)
moel@191:       : base(processorIndex, cpuid, settings) 
moel@196:     {            
moel@1:       // AMD family 10h processors support only one temperature sensor
moel@22:       coreTemperature = new Sensor(
moel@134:         "Core" + (coreCount > 1 ? " #1 - #" + coreCount : ""), 0,
moel@195:         SensorType.Temperature, this, new [] {
moel@122:             new ParameterDescription("Offset [°C]", "Temperature offset.", 0)
moel@165:           }, settings);
moel@1: 
moel@196:       // get the pci address for the Miscellaneous Control registers 
moel@196:       miscellaneousControlAddress = GetPciAddress(
moel@196:         MISCELLANEOUS_CONTROL_FUNCTION, MISCELLANEOUS_CONTROL_DEVICE_ID);
moel@42: 
moel@197:       busClock = new Sensor("Bus Speed", 0, SensorType.Clock, this, settings);
moel@197:       coreClocks = new Sensor[coreCount];
moel@197:       for (int i = 0; i < coreClocks.Length; i++) {
moel@197:         coreClocks[i] = new Sensor(CoreString(i), i + 1, SensorType.Clock,
moel@197:           this, settings);
moel@201:         if (HasTimeStampCounter)
moel@197:           ActivateSensor(coreClocks[i]);
moel@197:       }
moel@197: 
moel@201:       // set affinity to the first thread for all frequency estimations
moel@201:       IntPtr thread = NativeMethods.GetCurrentThread();
moel@201:       UIntPtr mask = NativeMethods.SetThreadAffinityMask(thread,
moel@201:         (UIntPtr)(1L << cpuid[0][0].Thread));
moel@201: 
moel@201:       uint ctlEax, ctlEdx;
moel@201:       WinRing0.Rdmsr(PERF_CTL_0, out ctlEax, out ctlEdx);
moel@201:       uint ctrEax, ctrEdx;
moel@201:       WinRing0.Rdmsr(PERF_CTR_0, out ctrEax, out ctrEdx);
moel@201: 
moel@201:       timeStampCounterMultiplier = estimateTimeStampCounterMultiplier();
moel@201: 
moel@201:       // restore the performance counter registers
moel@201:       WinRing0.Wrmsr(PERF_CTL_0, ctlEax, ctlEdx);
moel@201:       WinRing0.Wrmsr(PERF_CTR_0, ctrEax, ctrEdx);
moel@201: 
moel@201:       // restore the thread affinity.
moel@201:       NativeMethods.SetThreadAffinityMask(thread, mask);
moel@201: 
moel@1:       Update();                   
moel@1:     }
moel@1: 
moel@201:     private double estimateTimeStampCounterMultiplier() {
moel@201:       // preload the function
moel@201:       estimateTimeStampCounterMultiplier(0);
moel@201:       estimateTimeStampCounterMultiplier(0);
moel@201: 
moel@201:       // estimate the multiplier
moel@201:       List<double> estimate = new List<double>(3);
moel@201:       for (int i = 0; i < 3; i++)
moel@201:         estimate.Add(estimateTimeStampCounterMultiplier(0.025));
moel@201:       estimate.Sort();
moel@201:       return estimate[1];
moel@201:     }
moel@201: 
moel@201:     private double estimateTimeStampCounterMultiplier(double timeWindow) {
moel@201:       uint eax, edx;
moel@201:      
moel@201:       // select event "076h CPU Clocks not Halted" and enable the counter
moel@201:       WinRing0.Wrmsr(PERF_CTL_0,
moel@201:         (1 << 22) | // enable performance counter
moel@201:         (1 << 17) | // count events in user mode
moel@201:         (1 << 16) | // count events in operating-system mode
moel@201:         0x76, 0x00000000);
moel@201: 
moel@201:       // set the counter to 0
moel@201:       WinRing0.Wrmsr(PERF_CTR_0, 0, 0);
moel@201: 
moel@201:       long ticks = (long)(timeWindow * Stopwatch.Frequency);
moel@201:       uint lsbBegin, msbBegin, lsbEnd, msbEnd;
moel@201: 
moel@201:       long timeBegin = Stopwatch.GetTimestamp() +
moel@201:         (long)Math.Ceiling(0.001 * ticks);
moel@201:       long timeEnd = timeBegin + ticks;
moel@201:       while (Stopwatch.GetTimestamp() < timeBegin) { }
moel@201:       WinRing0.Rdmsr(PERF_CTR_0, out lsbBegin, out msbBegin);
moel@201:       while (Stopwatch.GetTimestamp() < timeEnd) { }
moel@201:       WinRing0.Rdmsr(PERF_CTR_0, out lsbEnd, out msbEnd);
moel@201: 
moel@201:       WinRing0.Rdmsr(COFVID_STATUS, out eax, out edx);
moel@201:       uint cpuDid = (eax >> 6) & 7;
moel@201:       uint cpuFid = eax & 0x1F;
moel@201:       double coreMultiplier = MultiplierFromIDs(cpuDid, cpuFid);
moel@201: 
moel@201:       ulong countBegin = ((ulong)msbBegin << 32) | lsbBegin;
moel@201:       ulong countEnd = ((ulong)msbEnd << 32) | lsbEnd;
moel@201: 
moel@201:       double coreFrequency = 1e-6 * 
moel@201:         (((double)(countEnd - countBegin)) * Stopwatch.Frequency) /
moel@201:         (timeEnd - timeBegin);
moel@201: 
moel@201:       double busFrequency = coreFrequency / coreMultiplier;
moel@201:       return 0.5 * Math.Round(2 * TimeStampCounterFrequency / busFrequency);
moel@201:     }
moel@201: 
moel@191:     protected override uint[] GetMSRs() {
moel@201:       return new uint[] { PERF_CTL_0, PERF_CTR_0, P_STATE_0, COFVID_STATUS };
moel@1:     }
moel@1: 
moel@196:     public override string GetReport() {
moel@196:       StringBuilder r = new StringBuilder();
moel@196:       r.Append(base.GetReport());
moel@196: 
moel@197:       r.Append("Miscellaneous Control Address: 0x");
moel@196:       r.AppendLine((miscellaneousControlAddress).ToString("X",
moel@196:         CultureInfo.InvariantCulture));
moel@201:       r.Append("Time Stamp Counter Multiplier: ");
moel@201:       r.AppendLine(timeStampCounterMultiplier.ToString(
moel@201:         CultureInfo.InvariantCulture));
moel@201:       r.AppendLine();
moel@201: 
moel@196:       return r.ToString();
moel@196:     }
moel@196: 
moel@201:     private static double MultiplierFromIDs(uint divisorID, uint frequencyID) {
moel@197:       return 0.5 * (frequencyID + 0x10) / (1 << (int)divisorID);
moel@197:     }
moel@197: 
moel@110:     public override void Update() {
moel@191:       base.Update();
moel@191: 
moel@196:       if (miscellaneousControlAddress != WinRing0.InvalidPciAddress) {
moel@42:         uint value;
moel@196:         if (WinRing0.ReadPciConfigDwordEx(miscellaneousControlAddress,
moel@42:           REPORTED_TEMPERATURE_CONTROL_REGISTER, out value)) {
moel@63:           coreTemperature.Value = ((value >> 21) & 0x7FF) / 8.0f +
moel@63:             coreTemperature.Parameters[0].Value;
moel@42:           ActivateSensor(coreTemperature);
moel@42:         } else {
moel@42:           DeactivateSensor(coreTemperature);
moel@42:         }
moel@24:       }
moel@197: 
moel@201:       if (HasTimeStampCounter) {
moel@197:         double newBusClock = 0;
moel@197: 
moel@197:         for (int i = 0; i < coreClocks.Length; i++) {
moel@197:           Thread.Sleep(1);
moel@197: 
moel@197:           uint curEax, curEdx;
moel@197:           if (WinRing0.RdmsrTx(COFVID_STATUS, out curEax, out curEdx,
moel@197:             (UIntPtr)(1L << cpuid[i][0].Thread))) 
moel@197:           {
moel@197:             // 8:6 CpuDid: current core divisor ID
moel@197:             // 5:0 CpuFid: current core frequency ID
moel@201:             uint cpuDid = (curEax >> 6) & 7;
moel@201:             uint cpuFid = curEax & 0x1F;
moel@201:             double multiplier = MultiplierFromIDs(cpuDid, cpuFid);
moel@197: 
moel@201:             coreClocks[i].Value = 
moel@201:               (float)(multiplier * TimeStampCounterFrequency / 
moel@201:               timeStampCounterMultiplier);
moel@201:             newBusClock = 
moel@201:               (float)(TimeStampCounterFrequency / timeStampCounterMultiplier);
moel@197:           } else {
moel@201:             coreClocks[i].Value = (float)TimeStampCounterFrequency;
moel@197:           }
moel@197:         }
moel@197: 
moel@197:         if (newBusClock > 0) {
moel@197:           this.busClock.Value = (float)newBusClock;
moel@197:           ActivateSensor(this.busClock);
moel@197:         }
moel@197:       }
moel@201:     }
moel@201: 
moel@201:     private static class NativeMethods {
moel@201:       private const string KERNEL = "kernel32.dll";
moel@201: 
moel@201:       [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi)]
moel@201:       public static extern UIntPtr
moel@201:         SetThreadAffinityMask(IntPtr handle, UIntPtr mask);
moel@201: 
moel@201:       [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi)]
moel@201:       public static extern IntPtr GetCurrentThread();
moel@201:     }
moel@1:   }
moel@1: }