ruby: enable multiple clock domains

This patch allows ruby to have multiple clock domains. As I understand
with this patch, controllers can have different frequencies. The entire
network needs to run at a single frequency.

The idea is that with in an object, time is treated in terms of cycles.
But the messages that are passed from one entity to another should contain
the time in Ticks. As of now, this is only true for the message buffers,
but not for the links in the network. As I understand the code, all the
entities in different networks (simple, garnet-fixed, garnet-flexible) should
be clocked at the same frequency.

Another problem is that the directory controller has to operate at the same
frequency as the ruby system. This is because the memory controller does
not make use of the Message Buffer, and instead implements a buffer of its
own. So, it has no idea of the frequency at which the directory controller
is operating and uses ruby system's frequency for scheduling events.

2 files changed, 21 insertions, 8 deletions

diff --git a/src/mem/slicc/symbols/StateMachine.py b/src/mem/slicc/symbols/StateMachine.py
index e66743255..ddaa3e440 100644
--- a/src/mem/slicc/symbols/StateMachine.py
+++ b/src/mem/slicc/symbols/StateMachine.py
@@ -518,7 +518,10 @@ m_dma_sequencer_ptr->setController(this);
         code('m_num_controllers++;')
         for var in self.objects:
             if var.ident.find("mandatoryQueue") >= 0:
-                code('m_${{var.c_ident}}_ptr = new ${{var.type.c_ident}}();')
+                code('''
+m_${{var.c_ident}}_ptr = new ${{var.type.c_ident}}();
+m_${{var.c_ident}}_ptr->setReceiver(this);
+''')
 
         code.dedent()
         code('''
@@ -573,7 +576,7 @@ $c_ident::init()
                         code('*$vid = ${{vtype["default"]}}; // $comment')
 
                     # Set ordering
-                    if "ordered" in var and "trigger_queue" not in var:
+                    if "ordered" in var:
                         # A buffer
                         code('$vid->setOrdering(${{var["ordered"]}});')
 
@@ -583,10 +586,16 @@ $c_ident::init()
                         code('$vid->setRandomization(${{var["random"]}});')
 
                     # Set Priority
-                    if vtype.isBuffer and \
-                           "rank" in var and "trigger_queue" not in var:
+                    if vtype.isBuffer and "rank" in var:
                         code('$vid->setPriority(${{var["rank"]}});')
 
+                    # Set sender and receiver for trigger queue
+                    if var.ident.find("triggerQueue") >= 0:
+                        code('$vid->setSender(this);')
+                        code('$vid->setReceiver(this);')
+                    elif vtype.c_ident == "TimerTable":
+                        code('$vid->setClockObj(this);')
+
             else:
                 # Network port object
                 network = var["network"]
@@ -601,6 +610,12 @@ $vid = m_net_ptr->get${network}NetQueue(m_version + base, $ordered, $vnet, "$vne
 
                 code('assert($vid != NULL);')
 
+                # Set the end
+                if network == "To":
+                    code('$vid->setSender(this);')
+                else:
+                    code('$vid->setReceiver(this);')
+
                 # Set ordering
                 if "ordered" in var:
                     # A buffer
@@ -647,8 +662,6 @@ $vid->setDescription("[Version " + to_string(m_version) + ", ${ident}, name=${{v
             code('${{port.code}}.setConsumer(this);')
             # Set the queue descriptions
             code('${{port.code}}.setDescription("[Version " + to_string(m_version) + ", $ident, $port]");')
-            # Set the clock object
-            code('${{port.code}}.setClockObj(this);')
 
         # Initialize the transition profiling
         code()
diff --git a/src/mem/slicc/symbols/Type.py b/src/mem/slicc/symbols/Type.py
index f40036e8e..6ee48ba8b 100644
--- a/src/mem/slicc/symbols/Type.py
+++ b/src/mem/slicc/symbols/Type.py
@@ -246,7 +246,7 @@ $klass ${{self.c_ident}}$parent
 ''', klass="class")
 
         if self.isMessage:
-            code('(Cycles curTime) : %s(curTime) {' % self["interface"])
+            code('(Tick curTime) : %s(curTime) {' % self["interface"])
         else:
             code('()\n\t\t{')
 
@@ -291,7 +291,7 @@ $klass ${{self.c_ident}}$parent
             params = ', '.join(params)
 
             if self.isMessage:
-                params = "const Cycles curTime, " + params
+                params = "const Tick curTime, " + params
 
             code('${{self.c_ident}}($params)')