RubyPrefetcher.py revision 10466:73b7549d979e
1# Copyright (c) 2012 Mark D. Hill and David A. Wood 2# All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are 6# met: redistributions of source code must retain the above copyright 7# notice, this list of conditions and the following disclaimer; 8# redistributions in binary form must reproduce the above copyright 9# notice, this list of conditions and the following disclaimer in the 10# documentation and/or other materials provided with the distribution; 11# neither the name of the copyright holders nor the names of its 12# contributors may be used to endorse or promote products derived from 13# this software without specific prior written permission. 14# 15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26# 27# Authors: Nilay Vaish 28 29from m5.SimObject import SimObject 30from System import System 31from m5.params import * 32from m5.proxy import * 33 34class Prefetcher(SimObject): 35 type = 'Prefetcher' 36 cxx_class = 'Prefetcher' 37 cxx_header = "mem/ruby/structures/Prefetcher.hh" 38 39 num_streams = Param.UInt32(4, 40 "Number of prefetch streams to be allocated") 41 pf_per_stream = Param.UInt32(1, "Number of prefetches per stream") 42 unit_filter = Param.UInt32(8, 43 "Number of entries in the unit filter array") 44 nonunit_filter = Param.UInt32(8, 45 "Number of entries in the non-unit filter array") 46 train_misses = Param.UInt32(4, "") 47 num_startup_pfs = Param.UInt32(1, "") 48 cross_page = Param.Bool(False, """True if prefetched address can be on a 49 page different from the observed address""") 50 sys = Param.System(Parent.any, "System this prefetcher belongs to") 51