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  * Authors: Andrew Bardsley
  38  *          Curtis Dunham
  39  *          Christian Menard
  40  */
  41
  42 #include "mem/external_master.hh"
  43
  44 #include <cctype>
  45 #include <iomanip>
  46
  47 #include "base/trace.hh"
  48 #include "debug/ExternalPort.hh"
  49 #include "sim/system.hh"
  50
  51 std::map<std::string, ExternalMaster::Handler *>
  52     ExternalMaster::portHandlers;
  53
  54 ExternalMaster::ExternalMaster(ExternalMasterParams *params) :
  55     SimObject(params),
  56     externalPort(NULL),
  57     portName(params->name + ".port"),
  58     portType(params->port_type),
  59     portData(params->port_data),
  60     masterId(params->system->getMasterId(this))
  61 {}
  62
  63 Port &
  64 ExternalMaster::getPort(const std::string &if_name, PortID idx)
  65 {
  66     if (if_name == "port") {
  67         DPRINTF(ExternalPort, "Trying to bind external port: %s %s\n",
  68             portType, portName);
  69
  70         if (!externalPort) {
  71             auto handlerIter = portHandlers.find(portType);
  72
  73             if (handlerIter == portHandlers.end())
  74                 fatal("Can't find port handler type '%s'\n", portType);
  75
  76             externalPort = portHandlers[portType]->getExternalPort(portName,
  77                 *this, portData);
  78
  79             if (!externalPort) {
  80                 fatal("%s: Can't find external port type: %s"
  81                     " port_data: '%s'\n", portName, portType, portData);
  82             }
  83         }
  84         return *externalPort;
  85     } else {
  86         return SimObject::getPort(if_name, idx);
  87     }
  88 }
  89
  90 void
  91 ExternalMaster::init()
  92 {
  93     if (!externalPort) {
  94         fatal("ExternalMaster %s: externalPort not set!\n", name());
  95     } else if (!externalPort->isConnected()) {
  96         fatal("ExternalMaster %s is unconnected!\n", name());
  97     }
  98 }
  99
 100 ExternalMaster *
 101 ExternalMasterParams::create()
 102 {
 103     return new ExternalMaster(this);
 104 }
 105
 106 void
 107 ExternalMaster::registerHandler(const std::string &handler_name,
 108     Handler *handler)
 109 {
 110     portHandlers[handler_name] = handler;
 111 }