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+# Copyright (c) 2015 ARM Limited
+# All rights reserved.
+#
+# The license below extends only to copyright in the software and shall
+# not be construed as granting a license to any other intellectual
+# property including but not limited to intellectual property relating
+# to a hardware implementation of the functionality of the software
+# licensed hereunder. You may use the software subject to the license
+# terms below provided that you ensure that this notice is replicated
+# unmodified and in its entirety in all distributions of the software,
+# modified or unmodified, in source code or in binary form.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: David Guillen Fandos
+
+from m5.SimObject import SimObject
+from ClockedObject import ClockedObject
+
+from m5.params import *
+from m5.objects import ThermalDomain
+
+
+# Represents a thermal node
+class ThermalNode(SimObject):
+ type = 'ThermalNode'
+ cxx_header = "sim/power/thermal_model.hh"
+
+# Represents a thermal resistor
+class ThermalResistor(SimObject):
+ type = 'ThermalResistor'
+ cxx_header = "sim/power/thermal_model.hh"
+
+ @classmethod
+ def export_methods(cls, code):
+ code('''
+ void setNodes(ThermalNode * node1, ThermalNode * node2);
+''')
+
+ resistance = Param.Float(1.0, "Thermal resistance, expressed in Kelvin per Watt")
+
+# Represents a thermal capacitor
+class ThermalCapacitor(SimObject):
+ type = 'ThermalCapacitor'
+ cxx_header = "sim/power/thermal_model.hh"
+
+ @classmethod
+ def export_methods(cls, code):
+ code('''
+ void setNodes(ThermalNode * node1, ThermalNode * node2);
+''')
+
+ capacitance = Param.Float(1.0, "Thermal capacitance, expressed in Joules per Kelvin")
+
+# Represents a fixed temperature node (ie. air)
+class ThermalReference(SimObject, object):
+ type = 'ThermalReference'
+ cxx_header = "sim/power/thermal_model.hh"
+
+ @classmethod
+ def export_methods(cls, code):
+ code('''
+ void setNode(ThermalNode * node);
+''')
+
+ # Static temperature which may change over time
+ temperature = Param.Float(25.0, "Operational temperature in Celsius")
+
+
+# Represents a thermal capacitor
+class ThermalModel(ClockedObject):
+ type = 'ThermalModel'
+ cxx_header = "sim/power/thermal_model.hh"
+
+ @classmethod
+ def export_methods(cls, code):
+ code('''
+ void addCapacitor(ThermalCapacitor *obj);
+ void addResistor(ThermalResistor *obj);
+ void addReference(ThermalReference *obj);
+ void addDomain(ThermalDomain *obj);
+ void addNode(ThermalNode *obj);
+ void doStep();
+''')
+
+ step = Param.Float(0.01, "Simulation step (in seconds) for thermal simulation")
+
+ def populate(self):
+ if not hasattr(self,"_capacitors"): self._capacitors = []
+ if not hasattr(self,"_resistors"): self._resistors = []
+ if not hasattr(self,"_domains"): self._domains = []
+ if not hasattr(self,"_references"): self._references = []
+ if not hasattr(self,"_nodes"): self._nodes = []
+
+ def init(self):
+ self.populate()
+
+ for ref, node in self._references:
+ ref.getCCObject().setNode(node.getCCObject())
+ self.getCCObject().addReference(ref.getCCObject())
+
+ for dom, node in self._domains:
+ dom.getCCObject().setNode(node.getCCObject())
+ self.getCCObject().addDomain(dom.getCCObject())
+
+ for cap, node1, node2 in self._capacitors:
+ cap.getCCObject().setNodes(node1.getCCObject(), node2.getCCObject())
+ self.getCCObject().addCapacitor(cap.getCCObject())
+
+ for res, node1, node2 in self._resistors:
+ res.getCCObject().setNodes(node1.getCCObject(), node2.getCCObject())
+ self.getCCObject().addResistor(res.getCCObject())
+
+ for node in self._nodes:
+ self.getCCObject().addNode(node.getCCObject())
+
+ def addCapacitor(self, cap, node1, node2):
+ self.populate()
+ self._capacitors.append( (cap, node1, node2) )
+ self._parent.thermal_components.append(cap)
+ self.addNodes(node1,node2)
+
+ def addResistor(self, res, node1, node2):
+ self.populate()
+ self._resistors.append( (res, node1, node2) )
+ self._parent.thermal_components.append(res)
+ self.addNodes(node1,node2)
+
+ def addReference(self, ref, node):
+ self.populate()
+ self._references.append( (ref, node) )
+ self._parent.thermal_components.append(ref)
+ self.addNodes(node)
+
+ def addDomain(self, dom, node):
+ self.populate()
+ self._domains.append( (dom, node) )
+ self.addNodes(node)
+
+ def addNodes(self, *nodes):
+ for node in nodes:
+ if node not in self._nodes:
+ self._nodes.append(node)
+ self._parent.thermal_components.append(node)
+
+ def doStep(self):
+ self.getCCObject().doStep()