config: make internal links in network topology unidirectional.

This patch makes the internal links within the network topology
unidirectional, thus allowing any deadlock-free routing algorithms to
be specified from the topology itself using weights.
This patch also renames Mesh.py and MeshDirCorners.py to
Mesh_XY.py and MeshDirCorners_XY.py (Mesh with XY routing).
It also adds a Mesh_westfirst.py and CrossbarGarnet.py topologies.

2 files changed, 7 insertions, 13 deletions

diff --git a/src/mem/ruby/network/garnet/flexible-pipeline/GarnetNetwork.cc b/src/mem/ruby/network/garnet/flexible-pipeline/GarnetNetwork.cc
index bd96fc2ed..0b33ab009 100644
--- a/src/mem/ruby/network/garnet/flexible-pipeline/GarnetNetwork.cc
+++ b/src/mem/ruby/network/garnet/flexible-pipeline/GarnetNetwork.cc
@@ -94,14 +94,13 @@ GarnetNetwork::~GarnetNetwork()
 }
 
 void
-GarnetNetwork::makeInLink(NodeID src, SwitchID dest, BasicLink* link,
-                          LinkDirection direction,
+GarnetNetwork::makeExtInLink(NodeID src, SwitchID dest, BasicLink* link,
                           const NetDest& routing_table_entry)
 {
     assert(src < m_nodes);
 
     GarnetExtLink* garnet_link = safe_cast<GarnetExtLink*>(link);
-    NetworkLink *net_link = garnet_link->m_network_links[direction];
+    NetworkLink *net_link = garnet_link->m_network_links[0];
 
     net_link->init_net_ptr(this);
     m_links.push_back(net_link);
@@ -110,8 +109,7 @@ GarnetNetwork::makeInLink(NodeID src, SwitchID dest, BasicLink* link,
 }
 
 void
-GarnetNetwork::makeOutLink(SwitchID src, NodeID dest, BasicLink* link,
-                           LinkDirection direction,
+GarnetNetwork::makeExtOutLink(SwitchID src, NodeID dest, BasicLink* link,
                            const NetDest& routing_table_entry)
 {
     assert(dest < m_nodes);
@@ -119,7 +117,7 @@ GarnetNetwork::makeOutLink(SwitchID src, NodeID dest, BasicLink* link,
     assert(m_routers[src] != NULL);
 
     GarnetExtLink* garnet_link = safe_cast<GarnetExtLink*>(link);
-    NetworkLink *net_link = garnet_link->m_network_links[direction];
+    NetworkLink *net_link = garnet_link->m_network_links[1];
 
     net_link->init_net_ptr(this);
     m_links.push_back(net_link);
@@ -130,11 +128,10 @@ GarnetNetwork::makeOutLink(SwitchID src, NodeID dest, BasicLink* link,
 
 void
 GarnetNetwork::makeInternalLink(SwitchID src, SwitchID dest, BasicLink* link,
-                                LinkDirection direction,
                                 const NetDest& routing_table_entry)
 {
     GarnetIntLink* garnet_link = safe_cast<GarnetIntLink*>(link);
-    NetworkLink *net_link = garnet_link->m_network_links[direction];
+    NetworkLink *net_link = garnet_link->m_network_links[0];
 
     net_link->init_net_ptr(this);
     m_links.push_back(net_link);
diff --git a/src/mem/ruby/network/garnet/flexible-pipeline/GarnetNetwork.hh b/src/mem/ruby/network/garnet/flexible-pipeline/GarnetNetwork.hh
index e9b94809f..18360d475 100644
--- a/src/mem/ruby/network/garnet/flexible-pipeline/GarnetNetwork.hh
+++ b/src/mem/ruby/network/garnet/flexible-pipeline/GarnetNetwork.hh
@@ -60,14 +60,11 @@ class GarnetNetwork : public BaseGarnetNetwork
     void print(std::ostream& out) const;
 
     // Methods used by Topology to setup the network
-    void makeOutLink(SwitchID src, NodeID dest, BasicLink* link,
-                     LinkDirection direction,
+    void makeExtOutLink(SwitchID src, NodeID dest, BasicLink* link,
                      const NetDest& routing_table_entry);
-    void makeInLink(NodeID src, SwitchID dest, BasicLink* link,
-                    LinkDirection direction,
+    void makeExtInLink(NodeID src, SwitchID dest, BasicLink* link,
                     const NetDest& routing_table_entry);
     void makeInternalLink(SwitchID src, SwitchID dest, BasicLink* link,
-                          LinkDirection direction,
                           const NetDest& routing_table_entry);
 
     //! Function for performing a functional read. The return value