configs/ruby/Ruby.py

   1 # Copyright (c) 2012 ARM Limited
   2 # All rights reserved.
   3 #
   4 # The license below extends only to copyright in the software and shall
   5 # not be construed as granting a license to any other intellectual
   6 # property including but not limited to intellectual property relating
   7 # to a hardware implementation of the functionality of the software
   8 # licensed hereunder.  You may use the software subject to the license
   9 # terms below provided that you ensure that this notice is replicated
  10 # unmodified and in its entirety in all distributions of the software,
  11 # modified or unmodified, in source code or in binary form.
  12 #
  13 # Copyright (c) 2006-2007 The Regents of The University of Michigan
  14 # Copyright (c) 2009 Advanced Micro Devices, Inc.
  15 # All rights reserved.
  16 #
  17 # Redistribution and use in source and binary forms, with or without
  18 # modification, are permitted provided that the following conditions are
  19 # met: redistributions of source code must retain the above copyright
  20 # notice, this list of conditions and the following disclaimer;
  21 # redistributions in binary form must reproduce the above copyright
  22 # notice, this list of conditions and the following disclaimer in the
  23 # documentation and/or other materials provided with the distribution;
  24 # neither the name of the copyright holders nor the names of its
  25 # contributors may be used to endorse or promote products derived from
  26 # this software without specific prior written permission.
  27 #
  28 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  31 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  33 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  34 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  35 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  36 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  37 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  38 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39 #
  40 # Authors: Brad Beckmann
  41
  42 import math
  43 import m5
  44 from m5.objects import *
  45 from m5.defines import buildEnv
  46 from m5.util import addToPath, fatal
  47
  48 addToPath('../topologies')
  49
  50 def define_options(parser):
  51     # By default, ruby uses the simple timing cpu
  52     parser.set_defaults(cpu_type="timing")
  53
  54     parser.add_option("--ruby-clock", action="store", type="string",
  55                       default='2GHz',
  56                       help="Clock for blocks running at Ruby system's speed")
  57
  58     # Options related to cache structure
  59     parser.add_option("--ports", action="store", type="int", default=4,
  60                       help="used of transitions per cycle which is a proxy \
  61                             for the number of ports.")
  62
  63     # ruby network options
  64     parser.add_option("--topology", type="string", default="Crossbar",
  65                  help="check src/mem/ruby/network/topologies for complete set")
  66     parser.add_option("--mesh-rows", type="int", default=1,
  67                       help="the number of rows in the mesh topology")
  68     parser.add_option("--garnet-network", type="choice",
  69                       choices=['fixed', 'flexible'], help="'fixed'|'flexible'")
  70     parser.add_option("--network-fault-model", action="store_true", default=False,
  71                       help="enable network fault model: see src/mem/ruby/network/fault_model/")
  72
  73     # ruby mapping options
  74     parser.add_option("--numa-high-bit", type="int", default=0,
  75                       help="high order address bit to use for numa mapping. " \
  76                            "0 = highest bit, not specified = lowest bit")
  77
  78     # ruby sparse memory options
  79     parser.add_option("--use-map", action="store_true", default=False)
  80     parser.add_option("--map-levels", type="int", default=4)
  81
  82     parser.add_option("--recycle-latency", type="int", default=10,
  83                       help="Recycle latency for ruby controller input buffers")
  84
  85     parser.add_option("--random_seed", type="int", default=1234,
  86                       help="Used for seeding the random number generator")
  87
  88     parser.add_option("--ruby_stats", type="string", default="ruby.stats")
  89
  90     protocol = buildEnv['PROTOCOL']
  91     exec "import %s" % protocol
  92     eval("%s.define_options(parser)" % protocol)
  93
  94 def create_topology(controllers, options):
  95     """ Called from create_system in configs/ruby/<protocol>.py
  96         Must return an object which is a subclass of BaseTopology
  97         found in configs/topologies/BaseTopology.py
  98         This is a wrapper for the legacy topologies.
  99     """
 100     exec "import %s as Topo" % options.topology
 101     topology = eval("Topo.%s(controllers)" % options.topology)
 102     return topology
 103
 104 def create_system(options, full_system, system, piobus = None, dma_ports = []):
 105
 106     system.ruby = RubySystem(no_mem_vec = options.use_map)
 107     ruby = system.ruby
 108
 109     # Set the network classes based on the command line options
 110     if options.garnet_network == "fixed":
 111         NetworkClass = GarnetNetwork_d
 112         IntLinkClass = GarnetIntLink_d
 113         ExtLinkClass = GarnetExtLink_d
 114         RouterClass = GarnetRouter_d
 115         InterfaceClass = GarnetNetworkInterface_d
 116
 117     elif options.garnet_network == "flexible":
 118         NetworkClass = GarnetNetwork
 119         IntLinkClass = GarnetIntLink
 120         ExtLinkClass = GarnetExtLink
 121         RouterClass = GarnetRouter
 122         InterfaceClass = GarnetNetworkInterface
 123
 124     else:
 125         NetworkClass = SimpleNetwork
 126         IntLinkClass = SimpleIntLink
 127         ExtLinkClass = SimpleExtLink
 128         RouterClass = Switch
 129         InterfaceClass = None
 130
 131     # Instantiate the network object so that the controllers can connect to it.
 132     network = NetworkClass(ruby_system = ruby, topology = options.topology,
 133             routers = [], ext_links = [], int_links = [], netifs = [])
 134     ruby.network = network
 135
 136     protocol = buildEnv['PROTOCOL']
 137     exec "import %s" % protocol
 138     try:
 139         (cpu_sequencers, dir_cntrls, topology) = \
 140              eval("%s.create_system(options, full_system, system, dma_ports,\
 141                                     ruby)"
 142                   % protocol)
 143     except:
 144         print "Error: could not create sytem for ruby protocol %s" % protocol
 145         raise
 146
 147     # Create a port proxy for connecting the system port. This is
 148     # independent of the protocol and kept in the protocol-agnostic
 149     # part (i.e. here).
 150     sys_port_proxy = RubyPortProxy(ruby_system = ruby)
 151
 152     # Give the system port proxy a SimObject parent without creating a
 153     # full-fledged controller
 154     system.sys_port_proxy = sys_port_proxy
 155
 156     # Connect the system port for loading of binaries etc
 157     system.system_port = system.sys_port_proxy.slave
 158
 159     # Create the network topology
 160     topology.makeTopology(options, network, IntLinkClass, ExtLinkClass,
 161             RouterClass)
 162
 163     if InterfaceClass != None:
 164         netifs = [InterfaceClass(id=i) for (i,n) in enumerate(network.ext_links)]
 165         network.netifs = netifs
 166
 167     if options.network_fault_model:
 168         assert(options.garnet_network == "fixed")
 169         network.enable_fault_model = True
 170         network.fault_model = FaultModel()
 171
 172     # Loop through the directory controlers.
 173     # Determine the total memory size of the ruby system and verify it is equal
 174     # to physmem.  However, if Ruby memory is using sparse memory in SE
 175     # mode, then the system should not back-up the memory state with
 176     # the Memory Vector and thus the memory size bytes should stay at 0.
 177     # Also set the numa bits to the appropriate values.
 178     total_mem_size = MemorySize('0B')
 179
 180     ruby.block_size_bytes = options.cacheline_size
 181     block_size_bits = int(math.log(options.cacheline_size, 2))
 182
 183     if options.numa_high_bit:
 184         numa_bit = options.numa_high_bit
 185     else:
 186         # if the numa_bit is not specified, set the directory bits as the
 187         # lowest bits above the block offset bits, and the numa_bit as the
 188         # highest of those directory bits
 189         dir_bits = int(math.log(options.num_dirs, 2))
 190         numa_bit = block_size_bits + dir_bits - 1
 191
 192     for dir_cntrl in dir_cntrls:
 193         total_mem_size.value += dir_cntrl.directory.size.value
 194         dir_cntrl.directory.numa_high_bit = numa_bit
 195
 196     phys_mem_size = sum(map(lambda r: r.size(), system.mem_ranges))
 197     assert(total_mem_size.value == phys_mem_size)
 198     ruby.mem_size = total_mem_size
 199
 200     # Connect the cpu sequencers and the piobus
 201     if piobus != None:
 202         for cpu_seq in cpu_sequencers:
 203             cpu_seq.pio_master_port = piobus.slave
 204             cpu_seq.mem_master_port = piobus.slave
 205
 206             if buildEnv['TARGET_ISA'] == "x86":
 207                 cpu_seq.pio_slave_port = piobus.master
 208
 209     ruby._cpu_ports = cpu_sequencers
 210     ruby.num_of_sequencers = len(cpu_sequencers)
 211     ruby.random_seed    = options.random_seed