src/sim/power/thermal_domain.cc

   1 /*
   2  * Copyright (c) 2015 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions are
  16  * met: redistributions of source code must retain the above copyright
  17  * notice, this list of conditions and the following disclaimer;
  18  * redistributions in binary form must reproduce the above copyright
  19  * notice, this list of conditions and the following disclaimer in the
  20  * documentation and/or other materials provided with the distribution;
  21  * neither the name of the copyright holders nor the names of its
  22  * contributors may be used to endorse or promote products derived from
  23  * this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  * Authors: David Guillen Fandos
  38  */
  39
  40 #include "sim/power/thermal_domain.hh"
  41
  42 #include <algorithm>
  43
  44 #include "base/statistics.hh"
  45 #include "debug/ThermalDomain.hh"
  46 #include "params/ThermalDomain.hh"
  47 #include "sim/power/thermal_model.hh"
  48 #include "sim/sim_object.hh"
  49
  50 ThermalDomain::ThermalDomain(const Params *p)
  51     : SimObject(p), _initTemperature(p->initial_temperature),
  52     node(NULL), subsystem(NULL)
  53 {
  54 }
  55
  56 double
  57 ThermalDomain::currentTemperature() const
  58 {
  59     return node->temp;
  60 }
  61
  62 void
  63 ThermalDomain::setSubSystem(SubSystem * ss)
  64 {
  65     assert(!this->subsystem);
  66     this->subsystem = ss;
  67
  68     ppThermalUpdate = new ProbePointArg<double>(subsystem->getProbeManager(),
  69                                                 "thermalUpdate");
  70 }
  71
  72 void
  73 ThermalDomain::regStats()
  74 {
  75     currentTemp
  76         .method(this, &ThermalDomain::currentTemperature)
  77         .name(params()->name + ".temp")
  78         .desc("Temperature in centigrate degrees")
  79         ;
  80 }
  81
  82 void
  83 ThermalDomain::emitUpdate()
  84 {
  85     ppThermalUpdate->notify(node->temp);
  86 }
  87
  88 ThermalDomain *
  89 ThermalDomainParams::create()
  90 {
  91     return new ThermalDomain(this);
  92 }
  93
  94 void
  95 ThermalDomain::serialize(CheckpointOut &cp) const
  96 {
  97     SERIALIZE_SCALAR(_initTemperature);
  98 }
  99
 100 void
 101 ThermalDomain::unserialize(CheckpointIn &cp)
 102 {
 103     UNSERIALIZE_SCALAR(_initTemperature);
 104 }
 105
 106
 107 LinearEquation
 108 ThermalDomain::getEquation(ThermalNode * tn, unsigned n, double step) const
 109 {
 110     LinearEquation eq(n);
 111     if (tn == node)
 112         eq[eq.cnt()] = 1.75f; // Fake 1.75 Watts for now, to be changed to PM
 113     return eq;
 114 }