ruby: changes how Topologies are created

Instead of just passing a list of controllers to the makeTopology function
in src/mem/ruby/network/topologies/<Topo>.py we pass in a function pointer
which knows how to make the topology, possibly with some extra state set
in the configs/ruby/<protocol>.py file. Thus, we can move all of the files
from network/topologies to configs/topologies. A new class BaseTopology
is added which all topologies in configs/topologies must inheirit from and
follow its API.

--HG--
rename : src/mem/ruby/network/topologies/Crossbar.py => configs/topologies/Crossbar.py
rename : src/mem/ruby/network/topologies/Mesh.py => configs/topologies/Mesh.py
rename : src/mem/ruby/network/topologies/MeshDirCorners.py => configs/topologies/MeshDirCorners.py
rename : src/mem/ruby/network/topologies/Pt2Pt.py => configs/topologies/Pt2Pt.py
rename : src/mem/ruby/network/topologies/Torus.py => configs/topologies/Torus.py

configs/topologies/Cluster.py

@@ -0,0 +1,117 @@
+# Copyright (c) 2012 Advanced Micro Devices, Inc.
+# 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: Jason Power
+
+
+from BaseTopology import BaseTopology
+
+class Cluster(BaseTopology):
+    """ A cluster is a group of nodes which are all one hop from eachother
+        Clusters can also contain other clusters
+        When creating this kind of topology, return a single cluster (usually
+        the root cluster) from create_system in configs/ruby/<protocol>.py
+    """
+
+    _num_int_links = 0
+    _num_ext_links = 0
+    _num_routers = 0
+
+    # Below methods for auto counting
+    @classmethod
+    def num_int_links(cls):
+        cls._num_int_links += 1
+        return cls._num_int_links - 1
+    @classmethod
+    def num_ext_links(cls):
+        cls._num_ext_links += 1
+        return cls._num_ext_links - 1
+    @classmethod
+    def num_routers(cls):
+        cls._num_routers += 1
+        return cls._num_routers - 1
+
+    def __init__(self, intBW=0, extBW=0, intLatency=0, extLatency=0):
+        """ internalBandwidth is bandwidth of all links within the cluster
+            externalBandwidth is bandwidth from this cluster to any cluster
+                connecting to it.
+            internal/externalLatency are similar
+            **** When creating a cluster with sub-clusters, the sub-cluster
+                 external bandwidth overrides the internal bandwidth of the
+                 super cluster
+        """
+        self.nodes = []
+        self.router = None # created in makeTopology
+        self.intBW = intBW
+        self.extBW = extBW
+        self.intLatency = intLatency
+        self.extLatency = extLatency
+
+    def add(self, node):
+        self.nodes.append(node)
+
+    def makeTopology(self, options, IntLink, ExtLink, Router):
+        """ Recursively make all of the links and routers
+        """
+        routers = []
+        int_links = []
+        ext_links = []
+
+        # make a router to connect all of the nodes
+        self.router = Router(router_id=self.num_routers())
+        routers.append(self.router)
+        for node in self.nodes:
+            if type(node) == Cluster:
+                subRouters, subIntLinks, subExtLinks = node.makeTopology(options, IntLink, ExtLink, Router)
+                routers += subRouters
+                int_links += subIntLinks
+                ext_links += subExtLinks
+
+                # connect this cluster to the router
+                link = IntLink(link_id=self.num_int_links(), node_a=self.router, node_b=node.router)
+                if node.extBW:
+                    link.bandwidth_factor = node.extBW
+                elif self.intBW: # if there is an interanl b/w for this node and no ext b/w to override
+                    link.bandwidth_factor = self.intBW
+
+                if node.extLatency:
+                    link.latency = node.extLatency
+                elif self.intLatency:
+                    link.latency = self.intLatency
+
+                int_links.append(link)
+            else:
+                # node is just a controller connect it to the router via a ext_link
+                link = ExtLink(link_id=self.num_ext_links(), ext_node=node, int_node=self.router)
+                if self.intBW:
+                    link.bandwidth_factor = self.intBW
+                if self.intLatency:
+                    link.latency = self.intLatency
+
+                ext_links.append(link)
+
+        return routers, int_links, ext_links
+