From 8573a69d8f7bf7b3f074e3e0ac64994801c551be Mon Sep 17 00:00:00 2001
From: Nilay Vaish <nilay@cs.wisc.edu>
Date: Fri, 22 Mar 2013 15:53:24 -0500
Subject: ruby: move stall and wakeup functions to AbstractController These
 functions are currently implemented in one of the files related to Slicc.
 Since these are purely C++ functions, they are better suited to be in the
 base class.

---
 src/mem/ruby/slicc_interface/AbstractController.cc | 84 ++++++++++++++++++++++
 src/mem/ruby/slicc_interface/AbstractController.hh |  7 +-
 2 files changed, 90 insertions(+), 1 deletion(-)

(limited to 'src/mem/ruby/slicc_interface')

diff --git a/src/mem/ruby/slicc_interface/AbstractController.cc b/src/mem/ruby/slicc_interface/AbstractController.cc
index 1615f8c1d..13107038c 100644
--- a/src/mem/ruby/slicc_interface/AbstractController.cc
+++ b/src/mem/ruby/slicc_interface/AbstractController.cc
@@ -86,3 +86,87 @@ AbstractController::connectWithPeer(AbstractController *c)
     getQueuesFromPeer(c);
     c->getQueuesFromPeer(this);
 }
+
+void
+AbstractController::stallBuffer(MessageBuffer* buf, Address addr)
+{
+    if (m_waiting_buffers.count(addr) == 0) {
+        MsgVecType* msgVec = new MsgVecType;
+        msgVec->resize(m_max_in_port_rank, NULL);
+        m_waiting_buffers[addr] = msgVec;
+    }
+    (*(m_waiting_buffers[addr]))[m_cur_in_port_rank] = buf;
+}
+
+void
+AbstractController::wakeUpBuffers(Address addr)
+{
+    if (m_waiting_buffers.count(addr) > 0) {
+        //
+        // Wake up all possible lower rank (i.e. lower priority) buffers that could
+        // be waiting on this message.
+        //
+        for (int in_port_rank = m_cur_in_port_rank - 1;
+             in_port_rank >= 0;
+             in_port_rank--) {
+            if ((*(m_waiting_buffers[addr]))[in_port_rank] != NULL) {
+                (*(m_waiting_buffers[addr]))[in_port_rank]->reanalyzeMessages(addr);
+            }
+        }
+        delete m_waiting_buffers[addr];
+        m_waiting_buffers.erase(addr);
+    }
+}
+
+void
+AbstractController::wakeUpAllBuffers(Address addr)
+{
+    if (m_waiting_buffers.count(addr) > 0) {
+        //
+        // Wake up all possible lower rank (i.e. lower priority) buffers that could
+        // be waiting on this message.
+        //
+        for (int in_port_rank = m_max_in_port_rank - 1;
+             in_port_rank >= 0;
+             in_port_rank--) {
+            if ((*(m_waiting_buffers[addr]))[in_port_rank] != NULL) {
+                (*(m_waiting_buffers[addr]))[in_port_rank]->reanalyzeMessages(addr);
+            }
+        }
+        delete m_waiting_buffers[addr];
+        m_waiting_buffers.erase(addr);
+    }
+}
+
+void
+AbstractController::wakeUpAllBuffers()
+{
+    //
+    // Wake up all possible buffers that could be waiting on any message.
+    //
+
+    std::vector<MsgVecType*> wokeUpMsgVecs;
+
+    if(m_waiting_buffers.size() > 0) {
+        for (WaitingBufType::iterator buf_iter = m_waiting_buffers.begin();
+             buf_iter != m_waiting_buffers.end();
+             ++buf_iter) {
+             for (MsgVecType::iterator vec_iter = buf_iter->second->begin();
+                  vec_iter != buf_iter->second->end();
+                  ++vec_iter) {
+                  if (*vec_iter != NULL) {
+                      (*vec_iter)->reanalyzeAllMessages();
+                  }
+             }
+             wokeUpMsgVecs.push_back(buf_iter->second);
+        }
+
+        for (std::vector<MsgVecType*>::iterator wb_iter = wokeUpMsgVecs.begin();
+             wb_iter != wokeUpMsgVecs.end();
+             ++wb_iter) {
+             delete (*wb_iter);
+        }
+
+        m_waiting_buffers.clear();
+    }
+}
diff --git a/src/mem/ruby/slicc_interface/AbstractController.hh b/src/mem/ruby/slicc_interface/AbstractController.hh
index 81ef3c52b..e2471777b 100644
--- a/src/mem/ruby/slicc_interface/AbstractController.hh
+++ b/src/mem/ruby/slicc_interface/AbstractController.hh
@@ -33,6 +33,7 @@
 #include <string>
 
 #include "mem/protocol/AccessPermission.hh"
+#include "mem/ruby/buffers/MessageBuffer.hh"
 #include "mem/ruby/common/Address.hh"
 #include "mem/ruby/common/Consumer.hh"
 #include "mem/ruby/common/DataBlock.hh"
@@ -44,7 +45,6 @@
 #include "params/RubyController.hh"
 #include "sim/clocked_object.hh"
 
-class MessageBuffer;
 class Network;
 
 class AbstractController : public ClockedObject, public Consumer
@@ -116,6 +116,11 @@ class AbstractController : public ClockedObject, public Consumer
     virtual void getQueuesFromPeer(AbstractController *)
     { fatal("getQueuesFromPeer() should be called only if implemented!"); }
 
+    void stallBuffer(MessageBuffer* buf, Address addr);
+    void wakeUpBuffers(Address addr);
+    void wakeUpAllBuffers(Address addr);
+    void wakeUpAllBuffers();
+
   protected:
     int m_transitions_per_cycle;
     int m_buffer_size;
-- 
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