From 03f740664bc8db8890359c9c5ad02df9db478bae Mon Sep 17 00:00:00 2001
From: Christian Menard <Christian.Menard@tu-dresden.de>
Date: Thu, 9 Feb 2017 19:15:41 -0500
Subject: misc: Clean up and complete the gem5<->SystemC-TLM bridge [5/10]

Changeset 11798:3a490c57058d
---------------------------
misc: Clean up and complete the gem5<->SystemC-TLM bridge [5/10]

The current TLM bridge only provides a Slave Port that allows the gem5
world to send request to the SystemC world. This patch series refractors
and cleans up the existing code, and adds a Master Port that allows the
SystemC world to send requests to the gem5 world.

This patch:
 * Introduce transactor modules that represent the gem5 ports in the
 * SystemC world.
 * Update the SimControl module and let it keep track of the gem5 ports.

Reviewed at http://reviews.gem5.org/r/3775/

Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
---
 util/tlm/sc_master_port.hh | 32 ++++++++++++++++++++++++--------
 1 file changed, 24 insertions(+), 8 deletions(-)

(limited to 'util/tlm/sc_master_port.hh')

diff --git a/util/tlm/sc_master_port.hh b/util/tlm/sc_master_port.hh
index f2ac1580e..5fae9b6b4 100644
--- a/util/tlm/sc_master_port.hh
+++ b/util/tlm/sc_master_port.hh
@@ -36,17 +36,20 @@
 #define __SC_MASTER_PORT_HH__
 
 #include <tlm_utils/peq_with_cb_and_phase.h>
-#include <tlm_utils/simple_target_socket.h>
 
+#include <systemc>
 #include <tlm>
 
 #include <mem/external_master.hh>
-#include <sc_module.hh>
 #include <sc_peq.hh>
+#include <sim_control.hh>
 
 namespace Gem5SystemC
 {
 
+// forward declaration
+class Gem5MasterTransactor;
+
 /**
  * This is a gem5 master port that translates TLM transactions to gem5 packets.
  *
@@ -84,11 +87,11 @@ class SCMasterPort : public ExternalMaster::Port
 
     bool responseInProgress;
 
-    // Keep a reference to the gem5 SystemC module
-    Module& module;
+    Gem5MasterTransactor* transactor;
 
-  public:
-    tlm_utils::simple_target_socket<SCMasterPort> tSocket;
+    System* system;
+
+    Gem5SimControl& simControl;
 
   protected:
     // payload event call back
@@ -112,9 +115,9 @@ class SCMasterPort : public ExternalMaster::Port
     SCMasterPort(const std::string& name_,
                  const std::string& systemc_name,
                  ExternalMaster& owner_,
-                 Module& module);
+                 Gem5SimControl& simControl);
 
-    static void registerPortHandler(Module& module);
+    void bindToTransactor(Gem5MasterTransactor* transactor);
 
     friend PayloadEvent<SCMasterPort>;
 
@@ -132,6 +135,19 @@ class SCMasterPort : public ExternalMaster::Port
     void checkTransaction(tlm::tlm_generic_payload& trans);
 };
 
+class SCMasterPortHandler : public ExternalMaster::Handler
+{
+  private:
+    Gem5SimControl& control;
+
+  public:
+    SCMasterPortHandler(Gem5SimControl& control) : control(control) {}
+
+    ExternalMaster::Port *getExternalPort(const std::string &name,
+                                          ExternalMaster &owner,
+                                          const std::string &port_data);
+};
+
 }
 
 #endif
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