gem5/tests/configs/tgen-simple-mem.py
Andreas Hansson 36dc93a5fa mem: Move crossbar default latencies to subclasses
This patch introduces a few subclasses to the CoherentXBar and
NoncoherentXBar to distinguish the different uses in the system. We
use the crossbar in a wide range of places: interfacing cores to the
L2, as a system interconnect, connecting I/O and peripherals,
etc. Needless to say, these crossbars have very different performance,
and the clock frequency alone is not enough to distinguish these
scenarios.

Instead of trying to capture every possible case, this patch
introduces dedicated subclasses for the three primary use-cases:
L2XBar, SystemXBar and IOXbar. More can be added if needed, and the
defaults can be overridden.
2015-03-02 04:00:47 -05:00

78 lines
3.5 KiB
Python

# Copyright (c) 2012 ARM Limited
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# Authors: Andreas Hansson
import m5
from m5.objects import *
# both traffic generator and communication monitor are only available
# if we have protobuf support, so potentially skip this test
require_sim_object("TrafficGen")
require_sim_object("CommMonitor")
# even if this is only a traffic generator, call it cpu to make sure
# the scripts are happy
cpu = TrafficGen(config_file = "tests/quick/se/70.tgen/tgen-simple-mem.cfg")
# system simulated
system = System(cpu = cpu, physmem = SimpleMemory(),
membus = IOXBar(width = 16),
clk_domain = SrcClockDomain(clock = '1GHz',
voltage_domain =
VoltageDomain()))
# add a communication monitor, and also trace all the packets and
# calculate and verify stack distance
system.monitor = CommMonitor(trace_file = "monitor.ptrc.gz",
trace_enable = True,
stack_dist_calc = StackDistCalc(verify = True))
# connect the traffic generator to the bus via a communication monitor
system.cpu.port = system.monitor.slave
system.monitor.master = system.membus.slave
# connect the system port even if it is not used in this example
system.system_port = system.membus.slave
# connect memory to the membus
system.physmem.port = system.membus.master
# -----------------------
# run simulation
# -----------------------
root = Root(full_system = False, system = system)
root.system.mem_mode = 'timing'