14167Sbinkertn@umich.edu# Copyright (c) 2007 The Regents of The University of Michigan 24167Sbinkertn@umich.edu# All rights reserved. 34167Sbinkertn@umich.edu# 44167Sbinkertn@umich.edu# Redistribution and use in source and binary forms, with or without 54167Sbinkertn@umich.edu# modification, are permitted provided that the following conditions are 64167Sbinkertn@umich.edu# met: redistributions of source code must retain the above copyright 74167Sbinkertn@umich.edu# notice, this list of conditions and the following disclaimer; 84167Sbinkertn@umich.edu# redistributions in binary form must reproduce the above copyright 94167Sbinkertn@umich.edu# notice, this list of conditions and the following disclaimer in the 104167Sbinkertn@umich.edu# documentation and/or other materials provided with the distribution; 114167Sbinkertn@umich.edu# neither the name of the copyright holders nor the names of its 124167Sbinkertn@umich.edu# contributors may be used to endorse or promote products derived from 134167Sbinkertn@umich.edu# this software without specific prior written permission. 144167Sbinkertn@umich.edu# 154167Sbinkertn@umich.edu# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 164167Sbinkertn@umich.edu# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 174167Sbinkertn@umich.edu# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 184167Sbinkertn@umich.edu# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 194167Sbinkertn@umich.edu# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 204167Sbinkertn@umich.edu# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 214167Sbinkertn@umich.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 224167Sbinkertn@umich.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 234167Sbinkertn@umich.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 244167Sbinkertn@umich.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 254167Sbinkertn@umich.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 264167Sbinkertn@umich.edu# 274167Sbinkertn@umich.edu# Authors: Nathan Binkert 284167Sbinkertn@umich.edu 2912563Sgabeblack@google.comfrom __future__ import print_function 3013719Sandreas.sandberg@arm.comimport six 3113719Sandreas.sandberg@arm.comif six.PY3: 3213719Sandreas.sandberg@arm.com long = int 3312563Sgabeblack@google.com 344167Sbinkertn@umich.eduimport sys 359528Ssascha.bischoff@arm.comfrom m5.util import warn 364167Sbinkertn@umich.edu 3713409Sgabeblack@google.com# fix the global frequency 384167Sbinkertn@umich.edudef fixGlobalFrequency(): 3911802Sandreas.sandberg@arm.com import _m5.core 4013409Sgabeblack@google.com _m5.core.fixClockFrequency() 414167Sbinkertn@umich.edu 424167Sbinkertn@umich.edudef setGlobalFrequency(ticksPerSecond): 436654Snate@binkert.org from m5.util import convert 4413409Sgabeblack@google.com import _m5.core 454167Sbinkertn@umich.edu 464167Sbinkertn@umich.edu if isinstance(ticksPerSecond, (int, long)): 474167Sbinkertn@umich.edu tps = ticksPerSecond 484167Sbinkertn@umich.edu elif isinstance(ticksPerSecond, float): 494167Sbinkertn@umich.edu tps = ticksPerSecond 504167Sbinkertn@umich.edu elif isinstance(ticksPerSecond, str): 514167Sbinkertn@umich.edu tps = round(convert.anyToFrequency(ticksPerSecond)) 524167Sbinkertn@umich.edu else: 5313663Sandreas.sandberg@arm.com raise TypeError( 5413663Sandreas.sandberg@arm.com "wrong type '%s' for ticksPerSecond" % type(ticksPerSecond)) 5513431Ssrikant.bharadwaj@amd.com _m5.core.setClockFrequency(int(tps)) 564167Sbinkertn@umich.edu 574167Sbinkertn@umich.edu# how big does a rounding error need to be before we warn about it? 584167Sbinkertn@umich.edufrequency_tolerance = 0.001 # 0.1% 594167Sbinkertn@umich.edu 604167Sbinkertn@umich.edudef fromSeconds(value): 6113409Sgabeblack@google.com import _m5.core 6213409Sgabeblack@google.com 634167Sbinkertn@umich.edu if not isinstance(value, float): 6413663Sandreas.sandberg@arm.com raise TypeError("can't convert '%s' to type tick" % type(value)) 654167Sbinkertn@umich.edu 664167Sbinkertn@umich.edu # once someone needs to convert to seconds, the global frequency 674167Sbinkertn@umich.edu # had better be fixed 6813409Sgabeblack@google.com if not _m5.core.clockFrequencyFixed(): 6913663Sandreas.sandberg@arm.com raise AttributeError( 7013663Sandreas.sandberg@arm.com "In order to do conversions, the global frequency must be fixed") 714167Sbinkertn@umich.edu 724167Sbinkertn@umich.edu if value == 0: 734167Sbinkertn@umich.edu return 0 744167Sbinkertn@umich.edu 754167Sbinkertn@umich.edu # convert the value from time to ticks 7613409Sgabeblack@google.com value *= _m5.core.getClockFrequency() 774167Sbinkertn@umich.edu 784167Sbinkertn@umich.edu int_value = int(round(value)) 794167Sbinkertn@umich.edu err = (value - int_value) / value 804167Sbinkertn@umich.edu if err > frequency_tolerance: 819528Ssascha.bischoff@arm.com warn("rounding error > tolerance\n %f rounded to %d", value, 829528Ssascha.bischoff@arm.com int_value) 834167Sbinkertn@umich.edu return int_value 844167Sbinkertn@umich.edu 854167Sbinkertn@umich.edu__all__ = [ 'setGlobalFrequency', 'fixGlobalFrequency', 'fromSeconds', 864167Sbinkertn@umich.edu 'frequency_tolerance' ] 87