CpuConfig.py revision 13731
112941Sandreas.sandberg@arm.com# Copyright (c) 2012, 2017-2018 ARM Limited 29520SAndreas.Sandberg@ARM.com# All rights reserved. 39520SAndreas.Sandberg@ARM.com# 49520SAndreas.Sandberg@ARM.com# The license below extends only to copyright in the software and shall 59520SAndreas.Sandberg@ARM.com# not be construed as granting a license to any other intellectual 69520SAndreas.Sandberg@ARM.com# property including but not limited to intellectual property relating 79520SAndreas.Sandberg@ARM.com# to a hardware implementation of the functionality of the software 89520SAndreas.Sandberg@ARM.com# licensed hereunder. You may use the software subject to the license 99520SAndreas.Sandberg@ARM.com# terms below provided that you ensure that this notice is replicated 109520SAndreas.Sandberg@ARM.com# unmodified and in its entirety in all distributions of the software, 119520SAndreas.Sandberg@ARM.com# modified or unmodified, in source code or in binary form. 129520SAndreas.Sandberg@ARM.com# 139520SAndreas.Sandberg@ARM.com# Redistribution and use in source and binary forms, with or without 149520SAndreas.Sandberg@ARM.com# modification, are permitted provided that the following conditions are 159520SAndreas.Sandberg@ARM.com# met: redistributions of source code must retain the above copyright 169520SAndreas.Sandberg@ARM.com# notice, this list of conditions and the following disclaimer; 179520SAndreas.Sandberg@ARM.com# redistributions in binary form must reproduce the above copyright 189520SAndreas.Sandberg@ARM.com# notice, this list of conditions and the following disclaimer in the 199520SAndreas.Sandberg@ARM.com# documentation and/or other materials provided with the distribution; 209520SAndreas.Sandberg@ARM.com# neither the name of the copyright holders nor the names of its 219520SAndreas.Sandberg@ARM.com# contributors may be used to endorse or promote products derived from 229520SAndreas.Sandberg@ARM.com# this software without specific prior written permission. 239520SAndreas.Sandberg@ARM.com# 249520SAndreas.Sandberg@ARM.com# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 259520SAndreas.Sandberg@ARM.com# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 269520SAndreas.Sandberg@ARM.com# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 279520SAndreas.Sandberg@ARM.com# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 289520SAndreas.Sandberg@ARM.com# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 299520SAndreas.Sandberg@ARM.com# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 309520SAndreas.Sandberg@ARM.com# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 319520SAndreas.Sandberg@ARM.com# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 329520SAndreas.Sandberg@ARM.com# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 339520SAndreas.Sandberg@ARM.com# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 349520SAndreas.Sandberg@ARM.com# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 359520SAndreas.Sandberg@ARM.com# 369520SAndreas.Sandberg@ARM.com# Authors: Andreas Sandberg 379520SAndreas.Sandberg@ARM.com 3812564Sgabeblack@google.comfrom __future__ import print_function 3912564Sgabeblack@google.com 4012095Sandreas.sandberg@arm.comfrom m5 import fatal 419520SAndreas.Sandberg@ARM.comimport m5.objects 429520SAndreas.Sandberg@ARM.comimport inspect 439520SAndreas.Sandberg@ARM.comimport sys 4411995Sgabeblack@google.comfrom textwrap import TextWrapper 459520SAndreas.Sandberg@ARM.com 469520SAndreas.Sandberg@ARM.com# Dictionary of mapping names of real CPU models to classes. 479520SAndreas.Sandberg@ARM.com_cpu_classes = {} 489520SAndreas.Sandberg@ARM.com 499520SAndreas.Sandberg@ARM.com 509520SAndreas.Sandberg@ARM.comdef is_cpu_class(cls): 519520SAndreas.Sandberg@ARM.com """Determine if a class is a CPU that can be instantiated""" 529520SAndreas.Sandberg@ARM.com 539520SAndreas.Sandberg@ARM.com # We can't use the normal inspect.isclass because the ParamFactory 549520SAndreas.Sandberg@ARM.com # and ProxyFactory classes have a tendency to confuse it. 559520SAndreas.Sandberg@ARM.com try: 569520SAndreas.Sandberg@ARM.com return issubclass(cls, m5.objects.BaseCPU) and \ 579520SAndreas.Sandberg@ARM.com not cls.abstract and \ 589520SAndreas.Sandberg@ARM.com not issubclass(cls, m5.objects.CheckerCPU) 5911688Sandreas.hansson@arm.com except (TypeError, AttributeError): 609520SAndreas.Sandberg@ARM.com return False 619520SAndreas.Sandberg@ARM.com 6212941Sandreas.sandberg@arm.comdef _cpu_subclass_tester(name): 6312941Sandreas.sandberg@arm.com cpu_class = getattr(m5.objects, name, None) 6412941Sandreas.sandberg@arm.com 6512941Sandreas.sandberg@arm.com def tester(cls): 6612941Sandreas.sandberg@arm.com return cpu_class is not None and cls is not None and \ 6712941Sandreas.sandberg@arm.com issubclass(cls, cpu_class) 6812941Sandreas.sandberg@arm.com 6912941Sandreas.sandberg@arm.com return tester 7012941Sandreas.sandberg@arm.com 7112941Sandreas.sandberg@arm.comis_kvm_cpu = _cpu_subclass_tester("BaseKvmCPU") 7213012Sandreas.sandberg@arm.comis_atomic_cpu = _cpu_subclass_tester("AtomicSimpleCPU") 7313684Sgiacomo.travaglini@arm.comis_noncaching_cpu = _cpu_subclass_tester("NonCachingSimpleCPU") 7412941Sandreas.sandberg@arm.com 759520SAndreas.Sandberg@ARM.comdef get(name): 769520SAndreas.Sandberg@ARM.com """Get a CPU class from a user provided class name or alias.""" 779520SAndreas.Sandberg@ARM.com 789520SAndreas.Sandberg@ARM.com try: 7911995Sgabeblack@google.com cpu_class = _cpu_classes[name] 809520SAndreas.Sandberg@ARM.com return cpu_class 819520SAndreas.Sandberg@ARM.com except KeyError: 8212564Sgabeblack@google.com print("%s is not a valid CPU model." % (name,)) 839520SAndreas.Sandberg@ARM.com sys.exit(1) 849520SAndreas.Sandberg@ARM.com 859520SAndreas.Sandberg@ARM.comdef print_cpu_list(): 869520SAndreas.Sandberg@ARM.com """Print a list of available CPU classes including their aliases.""" 879520SAndreas.Sandberg@ARM.com 8812564Sgabeblack@google.com print("Available CPU classes:") 899520SAndreas.Sandberg@ARM.com doc_wrapper = TextWrapper(initial_indent="\t\t", subsequent_indent="\t\t") 909520SAndreas.Sandberg@ARM.com for name, cls in _cpu_classes.items(): 9112564Sgabeblack@google.com print("\t%s" % name) 929520SAndreas.Sandberg@ARM.com 939520SAndreas.Sandberg@ARM.com # Try to extract the class documentation from the class help 949520SAndreas.Sandberg@ARM.com # string. 959520SAndreas.Sandberg@ARM.com doc = inspect.getdoc(cls) 969520SAndreas.Sandberg@ARM.com if doc: 979520SAndreas.Sandberg@ARM.com for line in doc_wrapper.wrap(doc): 9812564Sgabeblack@google.com print(line) 999520SAndreas.Sandberg@ARM.com 1009520SAndreas.Sandberg@ARM.comdef cpu_names(): 1019520SAndreas.Sandberg@ARM.com """Return a list of valid CPU names.""" 10213731Sandreas.sandberg@arm.com return list(_cpu_classes.keys()) 1039520SAndreas.Sandberg@ARM.com 10411251Sradhika.jagtap@ARM.comdef config_etrace(cpu_cls, cpu_list, options): 10511251Sradhika.jagtap@ARM.com if issubclass(cpu_cls, m5.objects.DerivO3CPU): 10611251Sradhika.jagtap@ARM.com # Assign the same file name to all cpus for now. This must be 10711251Sradhika.jagtap@ARM.com # revisited when creating elastic traces for multi processor systems. 10811251Sradhika.jagtap@ARM.com for cpu in cpu_list: 10911251Sradhika.jagtap@ARM.com # Attach the elastic trace probe listener. Set the protobuf trace 11011251Sradhika.jagtap@ARM.com # file names. Set the dependency window size equal to the cpu it 11111251Sradhika.jagtap@ARM.com # is attached to. 11211251Sradhika.jagtap@ARM.com cpu.traceListener = m5.objects.ElasticTrace( 11311251Sradhika.jagtap@ARM.com instFetchTraceFile = options.inst_trace_file, 11411251Sradhika.jagtap@ARM.com dataDepTraceFile = options.data_trace_file, 11511251Sradhika.jagtap@ARM.com depWindowSize = 3 * cpu.numROBEntries) 11611251Sradhika.jagtap@ARM.com # Make the number of entries in the ROB, LQ and SQ very 11711251Sradhika.jagtap@ARM.com # large so that there are no stalls due to resource 11811251Sradhika.jagtap@ARM.com # limitation as such stalls will get captured in the trace 11911251Sradhika.jagtap@ARM.com # as compute delay. For replay, ROB, LQ and SQ sizes are 12011251Sradhika.jagtap@ARM.com # modelled in the Trace CPU. 12111251Sradhika.jagtap@ARM.com cpu.numROBEntries = 512; 12211251Sradhika.jagtap@ARM.com cpu.LQEntries = 128; 12311251Sradhika.jagtap@ARM.com cpu.SQEntries = 128; 12411251Sradhika.jagtap@ARM.com else: 12511251Sradhika.jagtap@ARM.com fatal("%s does not support data dependency tracing. Use a CPU model of" 12611251Sradhika.jagtap@ARM.com " type or inherited from DerivO3CPU.", cpu_cls) 12711251Sradhika.jagtap@ARM.com 1289520SAndreas.Sandberg@ARM.com# Add all CPUs in the object hierarchy. 1299520SAndreas.Sandberg@ARM.comfor name, cls in inspect.getmembers(m5.objects, is_cpu_class): 1309520SAndreas.Sandberg@ARM.com _cpu_classes[name] = cls 13112098Sandreas.sandberg@arm.com 13212152Sandreas.sandberg@arm.com 13312152Sandreas.sandberg@arm.comfrom m5.defines import buildEnv 13412152Sandreas.sandberg@arm.comfrom importlib import import_module 13512152Sandreas.sandberg@arm.comfor package in [ "generic", buildEnv['TARGET_ISA']]: 13612152Sandreas.sandberg@arm.com try: 13712152Sandreas.sandberg@arm.com package = import_module(".cores." + package, package=__package__) 13812152Sandreas.sandberg@arm.com except ImportError: 13912152Sandreas.sandberg@arm.com # No timing models for this ISA 14012152Sandreas.sandberg@arm.com continue 14112152Sandreas.sandberg@arm.com 14212152Sandreas.sandberg@arm.com for mod_name, module in inspect.getmembers(package, inspect.ismodule): 14312152Sandreas.sandberg@arm.com for name, cls in inspect.getmembers(module, is_cpu_class): 14412152Sandreas.sandberg@arm.com _cpu_classes[name] = cls 145