fix: use of only one ni for both normal noc and circuit switching noc

src/networkInterface/NetworkInterfaceTlm.cpp

@@ -61,6 +61,11 @@ NetworkInterfaceTlm::NetworkInterfaceTlm(sc_module_name nm, Node& node,
                     &NetworkInterfaceTlm::nb_transport_bw_cb, 0);
     target.register_nb_transport_fw(this, 
                     &NetworkInterfaceTlm::nb_transport_fw_cb, 0);
+
+    initiator_cs.register_nb_transport_bw(this, 
+                    &NetworkInterfaceTlm::nb_transport_bw_cb, 0);
+    target_cs.register_nb_transport_fw(this, 
+                    &NetworkInterfaceTlm::nb_transport_fw_cb, 0);
 }
 
 NetworkInterfaceTlm::~NetworkInterfaceTlm() {
@@ -157,8 +162,44 @@ void NetworkInterfaceTlm::send_flit(Packet* p, Flit* f){
 
     sc_time delay = sc_time(REQ_INIT_DELAY, UNITS_DELAY);
     tlm::tlm_phase send_phase = tlm::BEGIN_REQ;
+
+    if(p->dataType == TYPE_STREAM){
+        initiator_cs->nb_transport_fw(*trans, send_phase, delay);
+    }
+    else{
         initiator->nb_transport_fw(*trans, send_phase, delay);
     }
+}
+
+
+bool NetworkInterfaceTlm::check_cs_needed(tlm_gp& trans){
+    int type = get_type_from_extension(trans);
+    return type == TYPE_INIT_STREAM || type == TYPE_END_STREAM;
+};
+
+void NetworkInterfaceTlm::send_cs_rout_conf_msg(tlm_gp& trans){
+    tlm::tlm_generic_payload* new_trans = m_mm.allocate();
+    new_trans->acquire();
+    new_trans->set_command(tlm::TLM_WRITE_COMMAND);
+    new_trans->set_address(trans.get_address());
+    new_trans->set_data_ptr(trans.get_data_ptr());
+    new_trans->set_data_length(trans.get_data_length());
+    new_trans->set_streaming_width(trans.get_streaming_width());
+    new_trans->set_byte_enable_ptr(trans.get_byte_enable_ptr());
+    new_trans->set_dmi_allowed(false);
+    new_trans->set_response_status(tlm::TLM_INCOMPLETE_RESPONSE);
+    
+    // add id to new_transaction
+    link_extension* ext = new link_extension();
+    ext->link = dest_link; // set direction of connected router
+    ext->data_type = get_type_from_extension(trans);
+    new_trans->set_extension(ext);
+
+    // send transaction in socket
+    tlm_phase phase = BEGIN_REQ;
+    sc_time delay = sc_time(REQ_INIT_DELAY, UNITS_DELAY);
+    initiator_cs->nb_transport_fw(*new_trans, phase, delay);
+}
 
 void NetworkInterfaceTlm::send_data_to_noc(){
     // if no flits to transmit, generate them
@@ -300,6 +341,7 @@ void NetworkInterfaceTlm::receive_and_process_flit(tlm_gp& trans){
         p->inTransmit.erase(position);
     p->transmitted.push_back(received_flit->id);
 
+    // log arrived flit
     if (received_flit->type==TAIL || received_flit->type==SINGLE){
         stringstream ss;
         string flit_type = received_flit->type==SINGLE ? "Single":"Tail";
@@ -317,6 +359,13 @@ void NetworkInterfaceTlm::receive_and_process_flit(tlm_gp& trans){
         packet_recv_queue.push(p);
     credit_counter++;
 
+    // send configuration message to cs_router
+    if(check_cs_needed(link, trans)){
+        send_cs_rout_conf_msg(trans);
+    }
+
+    // send response if not type stream
+    if(p->dataType != TYPE_STREAM){
         if(resp_in_progress) {
             if(nxt_resp_pend){
                 log_fatal("Attempt to have two pending responses in target");
@@ -325,6 +374,7 @@ void NetworkInterfaceTlm::receive_and_process_flit(tlm_gp& trans){
         }
         else{ send_response(trans); }
     }
+}
 
 
 void NetworkInterfaceTlm::target_peq_cb(tlm_gp& trans, const tlm::tlm_phase& phase){
@@ -375,7 +425,9 @@ tlm::tlm_sync_enum NetworkInterfaceTlm::send_end_req(tlm_gp& trans){
     }
 
     // Queue internal event to mark beginning of response
-    delay = delay + sc_time(INTERN_PROC_DELAY, UNITS_DELAY); // Latency
+    delay = p->dataType != TYPE_STREAM ? 
+                    delay + sc_time(INTERN_PROC_DELAY, UNITS_DELAY) : 
+                    SC_ZERO_TIME; // no processing on stream
     target_peq.notify(trans, INTERNAL_PROC_PHASE, delay);
 
     return status;

src/networkInterface/NetworkInterfaceTlm.h

@@ -70,6 +70,9 @@ public:
     Dir send_data_in_prog_dest;
     MemoryManager m_mm;
     uint8_t max_pos[3];
+    // To Circuit Switching NoC
+    ni_init_socket initiator_cs;
+    ni_targ_socket target_cs;
 
     sc_event_or_list ev_msg_arrv;
     
@@ -122,6 +125,22 @@ public:
      */
     tlm_gp* build_transaction(Packet* p, Flit* f);
 
+    /**
+     * If message is init streaming, a router_cs needs to be
+     * configured
+     *
+     * @param trans       TLM generic payload object
+     */
+    bool check_cs_needed(tlm_gp& trans);
+
+    /**
+     * Sends configuration message to router_cs
+     *
+     * @param trans       TLM generic payload object
+     */
+    bool send_cs_rout_conf_msg(tlm_gp& trans);
+
+
     /** 
      * Generates flits when a packet arrives
      */