tests: Add a memtest version using the ideal SnoopFilter

This patch adds a basic regression test for the snoop filter.

--HG--
rename : tests/configs/memtest.py => tests/configs/memtest-filter.py

1 files changed, 87 insertions, 0 deletions

diff --git a/tests/configs/memtest-filter.py b/tests/configs/memtest-filter.py
new file mode 100644
index 000000000..4de009d76
--- /dev/null
+++ b/tests/configs/memtest-filter.py
@@ -0,0 +1,87 @@
+# Copyright (c) 2006-2007 The Regents of The University of Michigan
+# 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: Ron Dreslinski
+
+import m5
+from m5.objects import *
+m5.util.addToPath('../configs/common')
+from Caches import *
+
+#MAX CORES IS 8 with the fals sharing method
+nb_cores = 8
+cpus = [ MemTest() for i in xrange(nb_cores) ]
+
+# system simulated
+system = System(cpu = cpus, funcmem = SimpleMemory(in_addr_map = False),
+                funcbus = NoncoherentBus(),
+                physmem = SimpleMemory(),
+                membus = CoherentBus(width=16, snoop_filter = SnoopFilter()))
+# Dummy voltage domain for all our clock domains
+system.voltage_domain = VoltageDomain()
+system.clk_domain = SrcClockDomain(clock = '1GHz',
+                                   voltage_domain = system.voltage_domain)
+
+# Create a seperate clock domain for components that should run at
+# CPUs frequency
+system.cpu_clk_domain = SrcClockDomain(clock = '2GHz',
+                                       voltage_domain = system.voltage_domain)
+
+system.toL2Bus = CoherentBus(clk_domain = system.cpu_clk_domain, width=16,
+                             snoop_filter = SnoopFilter())
+system.l2c = L2Cache(clk_domain = system.cpu_clk_domain, size='64kB', assoc=8)
+system.l2c.cpu_side = system.toL2Bus.master
+
+# connect l2c to membus
+system.l2c.mem_side = system.membus.slave
+
+# add L1 caches
+for cpu in cpus:
+    # All cpus are associated with cpu_clk_domain
+    cpu.clk_domain = system.cpu_clk_domain
+    cpu.l1c = L1Cache(size = '32kB', assoc = 4)
+    cpu.l1c.cpu_side = cpu.test
+    cpu.l1c.mem_side = system.toL2Bus.slave
+    system.funcbus.slave = cpu.functional
+
+system.system_port = system.membus.slave
+
+# connect reference memory to funcbus
+system.funcmem.port = system.funcbus.master
+
+# connect memory to membus
+system.physmem.port = system.membus.master
+
+
+# -----------------------
+# run simulation
+# -----------------------
+
+root = Root( full_system = False, system = system )
+root.system.mem_mode = 'timing'
+#root.trace.flags="Cache CachePort MemoryAccess"
+#root.trace.cycle=1
+