RubyPrefetcher.py revision 13665 
11689SN/A# Copyright (c) 2012 Mark D. Hill and David A. Wood
21689SN/A# All rights reserved.
31689SN/A#
41689SN/A# Redistribution and use in source and binary forms, with or without
51689SN/A# modification, are permitted provided that the following conditions are
61689SN/A# met: redistributions of source code must retain the above copyright
71689SN/A# notice, this list of conditions and the following disclaimer;
81689SN/A# redistributions in binary form must reproduce the above copyright
91689SN/A# notice, this list of conditions and the following disclaimer in the
101689SN/A# documentation and/or other materials provided with the distribution;
111689SN/A# neither the name of the copyright holders nor the names of its
121689SN/A# contributors may be used to endorse or promote products derived from
131689SN/A# this software without specific prior written permission.
141689SN/A#
151689SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
161689SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
171689SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
181689SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
191689SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
201689SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
211689SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
221689SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
231689SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
241689SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
251689SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
261689SN/A#
272665Ssaidi@eecs.umich.edu# Authors: Nilay Vaish
282665Ssaidi@eecs.umich.edu
291689SN/Afrom m5.SimObject import SimObject
301060SN/Afrom m5.params import *
312817Sksewell@umich.edufrom m5.proxy import *
321717SN/A
331060SN/Afrom m5.objects.System import System
342818Sksewell@umich.edu
35class Prefetcher(SimObject):
36    type = 'Prefetcher'
37    cxx_class = 'Prefetcher'
38    cxx_header = "mem/ruby/structures/Prefetcher.hh"
39
40    num_streams = Param.UInt32(4,
41        "Number of prefetch streams to be allocated")
42    pf_per_stream = Param.UInt32(1, "Number of prefetches per stream")
43    unit_filter  = Param.UInt32(8,
44        "Number of entries in the unit filter array")
45    nonunit_filter = Param.UInt32(8,
46        "Number of entries in the non-unit filter array")
47    train_misses = Param.UInt32(4, "")
48    num_startup_pfs = Param.UInt32(1, "")
49    cross_page = Param.Bool(False, """True if prefetched address can be on a
50            page different from the observed address""")
51    sys = Param.System(Parent.any, "System this prefetcher belongs to")
52