src/mem/mport.cc

   1 /*
   2  * Copyright (c) 2008 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Gabe Black
  29  */
  30
  31 #include "mem/mport.hh"
  32
  33 Tick
  34 MessagePort::recvAtomic(PacketPtr pkt)
  35 {
  36     if (pkt->cmd == MemCmd::MessageReq) {
  37         // We received a message.
  38         return recvMessage(pkt);
  39     } else if (pkt->cmd == MemCmd::MessageResp) {
  40         return recvResponse(pkt);
  41     } else if (pkt->wasNacked()) {
  42         return recvNack(pkt);
  43     } else if (pkt->isError()) {
  44         panic("Packet is error.\n");
  45     } else {
  46         panic("Unexpected memory command %s.\n", pkt->cmd.toString());
  47     }
  48 }
  49
  50 void
  51 MessagePort::sendMessageTiming(PacketPtr pkt, Tick latency)
  52 {
  53     schedSendTiming(pkt, curTick + latency);
  54 }
  55
  56 Tick
  57 MessagePort::sendMessageAtomic(PacketPtr pkt)
  58 {
  59     return sendAtomic(pkt);
  60 }