X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fsystemc%2Ftlm_bridge%2Ftlm_to_gem5.cc;h=3891f58afa9a0882010b37d13dacd9d1ae155c9e;hb=392c1ce;hp=e6cb48332046b6608d936cb60bd42a644220f2ab;hpb=0592272cffd6e8ea99b07f6c89c290264d20b3fb;p=gem5.git

diff --git a/src/systemc/tlm_bridge/tlm_to_gem5.cc b/src/systemc/tlm_bridge/tlm_to_gem5.cc
index e6cb48332..3891f58af 100644
--- a/src/systemc/tlm_bridge/tlm_to_gem5.cc
+++ b/src/systemc/tlm_bridge/tlm_to_gem5.cc
@@ -67,7 +67,7 @@ namespace sc_gem5
 {
 
 PacketPtr
-payload2packet(MasterID masterId, tlm::tlm_generic_payload &trans)
+payload2packet(RequestorID _id, tlm::tlm_generic_payload &trans)
 {
     MemCmd cmd;
 
@@ -87,7 +87,7 @@ payload2packet(MasterID masterId, tlm::tlm_generic_payload &trans)
 
     Request::Flags flags;
     auto req = std::make_shared<Request>(
-        trans.get_address(), trans.get_data_length(), flags, masterId);
+        trans.get_address(), trans.get_data_length(), flags, _id);
 
     /*
      * Allocate a new Packet. The packet will be deleted when it returns from
@@ -156,14 +156,21 @@ TlmToGem5Bridge<BITWIDTH>::handleBeginReq(tlm::tlm_generic_payload &trans)
         extension->setPipeThrough();
         pkt = extension->getPacket();
     } else {
-        pkt = payload2packet(masterId, trans);
+        pkt = payload2packet(_id, trans);
     }
 
     auto tlmSenderState = new TlmSenderState(trans);
     pkt->pushSenderState(tlmSenderState);
 
+    // If the packet doesn't need a response, we should send BEGIN_RESP by
+    // ourselves.
+    bool needsResponse = pkt->needsResponse();
     if (bmp.sendTimingReq(pkt)) { // port is free -> send END_REQ immediately
         sendEndReq(trans);
+        if (!needsResponse) {
+            auto delay = sc_core::SC_ZERO_TIME;
+            sendBeginResp(trans, delay);
+        }
         trans.release();
     } else { // port is blocked -> wait for retry before sending END_REQ
         waitForRetry = true;
@@ -274,7 +281,7 @@ TlmToGem5Bridge<BITWIDTH>::b_transport(tlm::tlm_generic_payload &trans,
         extension->setPipeThrough();
         pkt = extension->getPacket();
     } else {
-        pkt = payload2packet(masterId, trans);
+        pkt = payload2packet(_id, trans);
     }
 
     MemBackdoorPtr backdoor = nullptr;
@@ -311,7 +318,7 @@ TlmToGem5Bridge<BITWIDTH>::transport_dbg(tlm::tlm_generic_payload &trans)
         extension->setPipeThrough();
         bmp.sendFunctional(extension->getPacket());
     } else {
-        auto pkt = payload2packet(masterId, trans);
+        auto pkt = payload2packet(_id, trans);
         if (pkt) {
             bmp.sendFunctional(pkt);
             destroyPacket(pkt);
@@ -337,7 +344,7 @@ TlmToGem5Bridge<BITWIDTH>::get_direct_mem_ptr(tlm::tlm_generic_payload &trans,
         extension->setPipeThrough();
         pkt = extension->getPacket();
     } else {
-        pkt = payload2packet(masterId, trans);
+        pkt = payload2packet(_id, trans);
         pkt->req->setFlags(Request::NO_ACCESS);
     }
 
@@ -429,12 +436,19 @@ TlmToGem5Bridge<BITWIDTH>::recvReqRetry()
     sc_assert(pendingRequest != nullptr);
     sc_assert(pendingPacket != nullptr);
 
+    // If the packet doesn't need a response, we should send BEGIN_RESP by
+    // ourselves.
+    bool needsResponse = pendingPacket->needsResponse();
     if (bmp.sendTimingReq(pendingPacket)) {
         waitForRetry = false;
         pendingPacket = nullptr;
 
         auto &trans = *pendingRequest;
         sendEndReq(trans);
+        if (!needsResponse) {
+            auto delay = sc_core::SC_ZERO_TIME;
+            sendBeginResp(trans, delay);
+        }
         trans.release();
 
         pendingRequest = nullptr;
@@ -470,7 +484,7 @@ TlmToGem5Bridge<BITWIDTH>::TlmToGem5Bridge(
     bmp(std::string(name()) + "master", *this), socket("tlm_socket"),
     wrapper(socket, std::string(name()) + ".tlm", InvalidPortID),
     system(params->system),
-    masterId(params->system->getGlobalMasterId(
+    _id(params->system->getGlobalRequestorId(
                 std::string("[systemc].") + name()))
 {
 }