ruby: included ruby config parameter ports per core

Slightly improved the major hack need to correctly assign the number of ports
per core.  CPUs have two ports: icache + dcache.  MemTester has one port.

3 files changed, 8 insertions, 4 deletions

diff --git a/src/mem/RubyMemory.py b/src/mem/RubyMemory.py
index ddd97572c..2ad794a3f 100644
--- a/src/mem/RubyMemory.py
+++ b/src/mem/RubyMemory.py
@@ -45,3 +45,4 @@ class RubyMemory(PhysicalMemory):
     num_dmas = Param.Int(0, "Number of DMA ports connected to the Ruby memory")
     dma_port = VectorPort("Ruby_dma_ports")
     pio_port = Port("Ruby_pio_port")
+    ports_per_core = Param.Int(2, "Number of per core. Typical two: icache + dcache")
diff --git a/src/mem/rubymem.cc b/src/mem/rubymem.cc
index aecc0af32..9a1a7927d 100644
--- a/src/mem/rubymem.cc
+++ b/src/mem/rubymem.cc
@@ -58,6 +58,8 @@ RubyMemory::RubyMemory(const Params *p)
     ruby_clock = p->clock;
     ruby_phase = p->phase;
 
+    ports_per_cpu = p->ports_per_core;
+
     DPRINTF(Ruby, "creating Ruby Memory from file %s\n",
             p->config_file.c_str());
 
@@ -230,14 +232,14 @@ RubyMemory::getPort(const std::string &if_name, int idx)
 
     //
     // Currently this code assumes that each cpu has both a
-    // icache and dcache port and therefore divides by two.  This will be
-    // fixed once we unify the configuration systems and Ruby sequencers
+    // icache and dcache port and therefore divides by ports per cpu.  This will
+    // be fixed once we unify the configuration systems and Ruby sequencers
     // directly support M5 ports.
     //
-    assert(idx/2 < ruby_ports.size());
+    assert(idx/ports_per_cpu < ruby_ports.size());
     Port *port = new Port(csprintf("%s-port%d", name(), idx), 
                           this, 
-                          ruby_ports[idx/2]);
+                          ruby_ports[idx/ports_per_cpu]);
 
     ports[idx] = port;
     return port;
diff --git a/src/mem/rubymem.hh b/src/mem/rubymem.hh
index dd0a492f5..2672dcb77 100644
--- a/src/mem/rubymem.hh
+++ b/src/mem/rubymem.hh
@@ -130,6 +130,7 @@ class RubyMemory : public PhysicalMemory
     Tick ruby_clock;
     Tick ruby_phase;
     RubyExitCallback* rubyExitCB;
+    int ports_per_cpu;
 
   public:
     static std::map<int64_t, PacketPtr> pending_requests;