1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
# -*- coding: utf-8 -*-
# Copyright (c) 2017 Jason Power
# All rights reserved.
#
# 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: Jason Power
""" This file creates a set of Ruby caches, the Ruby network, and a simple
point-to-point topology for the RubyRandomTester to use.
See Part 3 in the Learning gem5 book:
http://gem5.org/documentation/learning_gem5/part3/MSIintro
IMPORTANT: If you modify this file, it's likely that the Learning gem5 book
also needs to be updated. For now, email Jason <jason@lowepower.com>
"""
from __future__ import print_function
from __future__ import absolute_import
from m5.defines import buildEnv
from m5.util import fatal
from m5.objects import *
from msi_caches import L1Cache, DirController, MyNetwork
class TestCacheSystem(RubySystem):
def __init__(self):
if buildEnv['PROTOCOL'] != 'MSI':
fatal("This system assumes MSI from learning gem5!")
super(TestCacheSystem, self).__init__()
def setup(self, system, tester, mem_ctrls):
"""Set up the Ruby cache subsystem. Note: This can't be done in the
constructor because many of these items require a pointer to the
ruby system (self). This causes infinite recursion in initialize()
if we do this in the __init__.
Setting up for running the RubyRandomTester is a little different
than when we're using CPUs.
"""
num_testers = tester.num_cpus
# Ruby's global network.
self.network = MyNetwork(self)
# MSI uses 3 virtual networks
self.number_of_virtual_networks = 3
self.network.number_of_virtual_networks = 3
self.controllers = \
[L1Cache(system, self, self) for i in range(num_testers)] + \
[DirController(self, system.mem_ranges, mem_ctrls)]
self.sequencers = [RubySequencer(version = i,
# I/D cache is combined and grab from ctrl
icache = self.controllers[i].cacheMemory,
dcache = self.controllers[i].cacheMemory,
clk_domain = self.clk_domain,
) for i in range(num_testers)]
for i,c in enumerate(self.controllers[0:len(self.sequencers)]):
c.sequencer = self.sequencers[i]
self.num_of_sequencers = len(self.sequencers)
# Create the network and connect the controllers.
# NOTE: This is quite different if using Garnet!
self.network.connectControllers(self.controllers)
self.network.setup_buffers()
# Set up a proxy port for the system_port. Used for load binaries and
# other functional-only things.
self.sys_port_proxy = RubyPortProxy()
system.system_port = self.sys_port_proxy.slave
# Connect up the sequencers to the random tester
for seq in self.sequencers:
if seq.support_data_reqs and seq.support_inst_reqs:
tester.cpuInstDataPort = seq.slave
elif seq.support_data_reqs:
tester.cpuDataPort = seq.slave
elif seq.support_inst_reqs:
tester.cpuInstDataPort = seq.slave
# Do not automatically retry stalled Ruby requests
seq.no_retry_on_stall = True
# Tell each sequencer this is the ruby tester so that it
# copies the subblock back to the checker
seq.using_ruby_tester = True
|
