From b9e23a6d741cdcdf0ffb7364c6aae36a487335ef Mon Sep 17 00:00:00 2001
From: Tushar Krishna <tushar@ece.gatech.edu>
Date: Thu, 6 Oct 2016 14:35:17 -0400
Subject: config: add a separate config file for the network. This patch adds a
 new file configs/network/Network.py to setup the network, instead of doing
 that within Ruby.py.

---
 configs/network/Network.py | 93 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 configs/network/Network.py

(limited to 'configs/network')

diff --git a/configs/network/Network.py b/configs/network/Network.py
new file mode 100644
index 000000000..871682ff1
--- /dev/null
+++ b/configs/network/Network.py
@@ -0,0 +1,93 @@
+# Copyright (c) 2016 Georgia Institute of Technology
+# 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: Tushar Krishna
+
+import math
+import m5
+from m5.objects import *
+from m5.defines import buildEnv
+from m5.util import addToPath, fatal
+
+def define_options(parser):
+    # By default, ruby uses the simple timing cpu
+    parser.set_defaults(cpu_type="timing")
+
+    parser.add_option("--topology", type="string", default="Crossbar",
+                      help="check configs/topologies for complete set")
+    parser.add_option("--mesh-rows", type="int", default=1,
+                      help="the number of rows in the mesh topology")
+    parser.add_option("--garnet-network", type="choice",
+                      choices=['fixed', 'flexible'], help="'fixed'|'flexible'")
+    parser.add_option("--network-fault-model", action="store_true", default=False,
+                      help="enable network fault model: see src/mem/ruby/network/fault_model/")
+
+
+def create_network(options, ruby):
+
+    # Set the network classes based on the command line options
+    if options.garnet_network == "fixed":
+        NetworkClass = GarnetNetwork_d
+        IntLinkClass = GarnetIntLink_d
+        ExtLinkClass = GarnetExtLink_d
+        RouterClass = GarnetRouter_d
+        InterfaceClass = GarnetNetworkInterface_d
+
+    elif options.garnet_network == "flexible":
+        NetworkClass = GarnetNetwork
+        IntLinkClass = GarnetIntLink
+        ExtLinkClass = GarnetExtLink
+        RouterClass = GarnetRouter
+        InterfaceClass = GarnetNetworkInterface
+
+    else:
+        NetworkClass = SimpleNetwork
+        IntLinkClass = SimpleIntLink
+        ExtLinkClass = SimpleExtLink
+        RouterClass = Switch
+        InterfaceClass = None
+
+    # Instantiate the network object
+    # so that the controllers can connect to it.
+    network = NetworkClass(ruby_system = ruby, topology = options.topology,
+            routers = [], ext_links = [], int_links = [], netifs = [])
+
+    return (network, IntLinkClass, ExtLinkClass, RouterClass, InterfaceClass)
+
+def init_network(options, network, InterfaceClass):
+
+    if options.garnet_network is None:
+        network.setup_buffers()
+
+    if InterfaceClass != None:
+        netifs = [InterfaceClass(id=i) \
+                  for (i,n) in enumerate(network.ext_links)]
+        network.netifs = netifs
+
+    if options.network_fault_model:
+        assert(options.garnet_network == "fixed")
+        network.enable_fault_model = True
+        network.fault_model = FaultModel()
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