1 # Copyright (c) 2006-2007 The Regents of The University of Michigan
2 # Copyright (c) 2009 Advanced Micro Devices, Inc.
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions are
7 # met: redistributions of source code must retain the above copyright
8 # notice, this list of conditions and the following disclaimer;
9 # redistributions in binary form must reproduce the above copyright
10 # notice, this list of conditions and the following disclaimer in the
11 # documentation and/or other materials provided with the distribution;
12 # neither the name of the copyright holders nor the names of its
13 # contributors may be used to endorse or promote products derived from
14 # this software without specific prior written permission.
16 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 # Authors: Ron Dreslinski
32 from m5
.objects
import *
33 from m5
.defines
import buildEnv
34 from m5
.util
import addToPath
35 import os
, optparse
, sys
36 addToPath('../common')
38 addToPath('../topologies')
43 # Get paths we might need. It's expected this file is in m5/configs/example.
44 config_path
= os
.path
.dirname(os
.path
.abspath(__file__
))
45 config_root
= os
.path
.dirname(config_path
)
47 parser
= optparse
.OptionParser()
48 Options
.addCommonOptions(parser
)
50 parser
.add_option("--maxloads", metavar
="N", default
=0,
51 help="Stop after N loads")
52 parser
.add_option("--progress", type="int", default
=1000,
54 help="Progress message interval "
55 "[default: %default]")
56 parser
.add_option("--num-dmas", type="int", default
=0, help="# of dma testers")
57 parser
.add_option("--functional", type="int", default
=0,
58 help="percentage of accesses that should be functional")
59 parser
.add_option("--suppress-func-warnings", action
="store_true",
60 help="suppress warnings when functional accesses fail")
63 # Add the ruby specific and protocol specific options
65 Ruby
.define_options(parser
)
67 execfile(os
.path
.join(config_root
, "common", "Options.py"))
69 (options
, args
) = parser
.parse_args()
72 # Set the default cache size and associativity to be very small to encourage
73 # races between requests and writebacks.
75 options
.l1d_size
="256B"
76 options
.l1i_size
="256B"
77 options
.l2_size
="512B"
85 print "Error: script doesn't take any positional arguments"
90 if options
.num_cpus
> block_size
:
91 print "Error: Number of testers %d limited to %d because of false sharing" \
92 % (options
.num_cpus
, block_size
)
96 # Currently ruby does not support atomic or uncacheable accesses
98 cpus
= [ MemTest(atomic
= False,
99 max_loads
= options
.maxloads
,
101 percent_functional
= options
.functional
,
102 percent_uncacheable
= 0,
103 progress_interval
= options
.progress
,
104 suppress_func_warnings
= options
.suppress_func_warnings
) \
105 for i
in xrange(options
.num_cpus
) ]
107 system
= System(cpu
= cpus
,
108 funcmem
= SimpleMemory(in_addr_map
= False),
109 funcbus
= NoncoherentBus(),
110 physmem
= SimpleMemory(),
111 clk_domain
= SrcClockDomain(clock
= options
.sys_clock
),
112 mem_ranges
= [AddrRange(options
.mem_size
)])
114 if options
.num_dmas
> 0:
115 dmas
= [ MemTest(atomic
= False,
116 max_loads
= options
.maxloads
,
118 percent_functional
= 0,
119 percent_uncacheable
= 0,
120 progress_interval
= options
.progress
,
121 suppress_func_warnings
=
122 not options
.suppress_func_warnings
) \
123 for i
in xrange(options
.num_dmas
) ]
124 system
.dma_devices
= dmas
129 for (i
, dma
) in enumerate(dmas
):
130 dma_ports
.append(dma
.test
)
131 Ruby
.create_system(options
, system
, dma_ports
= dma_ports
)
133 # Create a top-level voltage domain and clock domain
134 system
.voltage_domain
= VoltageDomain(voltage
= options
.sys_voltage
)
135 system
.clk_domain
= SrcClockDomain(clock
= options
.sys_clock
,
136 voltage_domain
= system
.voltage_domain
)
137 # Create a seperate clock domain for Ruby
138 system
.ruby
.clk_domain
= SrcClockDomain(clock
= options
.ruby_clock
,
139 voltage_domain
= system
.voltage_domain
)
142 # The tester is most effective when randomization is turned on and
143 # artifical delay is randomly inserted on messages
145 system
.ruby
.randomization
= True
147 assert(len(cpus
) == len(system
.ruby
._cpu
_ports
))
149 for (i
, cpu
) in enumerate(cpus
):
151 # Tie the cpu memtester ports to the correct system ports
153 cpu
.test
= system
.ruby
._cpu
_ports
[i
].slave
154 cpu
.functional
= system
.funcbus
.slave
157 # Since the memtester is incredibly bursty, increase the deadlock
158 # threshold to 5 million cycles
160 system
.ruby
._cpu
_ports
[i
].deadlock_threshold
= 5000000
163 # Ruby doesn't need the backing image of memory when running with
166 system
.ruby
._cpu
_ports
[i
].access_phys_mem
= False
168 for (i
, dma
) in enumerate(dmas
):
170 # Tie the dma memtester ports to the correct functional port
171 # Note that the test port has already been connected to the dma_sequencer
173 dma
.functional
= system
.funcbus
.slave
175 # connect reference memory to funcbus
176 system
.funcbus
.master
= system
.funcmem
.port
178 # -----------------------
180 # -----------------------
182 root
= Root( full_system
= False, system
= system
)
183 root
.system
.mem_mode
= 'timing'
185 # Not much point in this being higher than the L1 latency
186 m5
.ticks
.setGlobalFrequency('1ns')
188 # instantiate configuration
191 # simulate until program terminates
192 exit_event
= m5
.simulate(options
.abs_max_tick
)
194 print 'Exiting @ tick', m5
.curTick(), 'because', exit_event
.getCause()