src/mem/external_master.cc

   1 /*
   2  * Copyright (c) 2012-2014 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions are
  16  * met: redistributions of source code must retain the above copyright
  17  * notice, this list of conditions and the following disclaimer;
  18  * redistributions in binary form must reproduce the above copyright
  19  * notice, this list of conditions and the following disclaimer in the
  20  * documentation and/or other materials provided with the distribution;
  21  * neither the name of the copyright holders nor the names of its
  22  * contributors may be used to endorse or promote products derived from
  23  * this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #include "mem/external_master.hh"
  39
  40 #include <cctype>
  41 #include <iomanip>
  42
  43 #include "base/trace.hh"
  44 #include "debug/ExternalPort.hh"
  45 #include "sim/system.hh"
  46
  47 std::map<std::string, ExternalMaster::Handler *>
  48     ExternalMaster::portHandlers;
  49
  50 ExternalMaster::ExternalMaster(const ExternalMasterParams &params) :
  51     SimObject(params),
  52     externalPort(NULL),
  53     portName(params.name + ".port"),
  54     portType(params.port_type),
  55     portData(params.port_data),
  56     id(params.system->getRequestorId(this))
  57 {}
  58
  59 Port &
  60 ExternalMaster::getPort(const std::string &if_name, PortID idx)
  61 {
  62     if (if_name == "port") {
  63         DPRINTF(ExternalPort, "Trying to bind external port: %s %s\n",
  64             portType, portName);
  65
  66         if (!externalPort) {
  67             auto handlerIter = portHandlers.find(portType);
  68
  69             if (handlerIter == portHandlers.end())
  70                 fatal("Can't find port handler type '%s'\n", portType);
  71
  72             externalPort = portHandlers[portType]->getExternalPort(portName,
  73                 *this, portData);
  74
  75             if (!externalPort) {
  76                 fatal("%s: Can't find external port type: %s"
  77                     " port_data: '%s'\n", portName, portType, portData);
  78             }
  79         }
  80         return *externalPort;
  81     } else {
  82         return SimObject::getPort(if_name, idx);
  83     }
  84 }
  85
  86 void
  87 ExternalMaster::init()
  88 {
  89     if (!externalPort) {
  90         fatal("ExternalMaster %s: externalPort not set!\n", name());
  91     } else if (!externalPort->isConnected()) {
  92         fatal("ExternalMaster %s is unconnected!\n", name());
  93     }
  94 }
  95
  96 void
  97 ExternalMaster::registerHandler(const std::string &handler_name,
  98     Handler *handler)
  99 {
 100     portHandlers[handler_name] = handler;
 101 }