port.hh revision 13321
1/* 2 * Copyright 2018 Google, Inc. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: redistributions of source code must retain the above copyright 7 * notice, this list of conditions and the following disclaimer; 8 * redistributions in binary form must reproduce the above copyright 9 * notice, this list of conditions and the following disclaimer in the 10 * documentation and/or other materials provided with the distribution; 11 * neither the name of the copyright holders nor the names of its 12 * contributors may be used to endorse or promote products derived from 13 * this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * Authors: Gabe Black 28 */ 29 30#ifndef __SYSTEMC_CORE_PORT_HH__ 31#define __SYSTEMC_CORE_PORT_HH__ 32 33#include <list> 34#include <typeinfo> 35#include <vector> 36 37#include "base/cprintf.hh" 38#include "systemc/ext/core/sc_interface.hh" 39#include "systemc/ext/core/sc_port.hh" 40 41namespace sc_gem5 42{ 43 44class StaticSensitivityPort; 45class StaticSensitivityFinder; 46class Reset; 47 48class Port; 49 50extern std::list<Port *> allPorts; 51 52class Port 53{ 54 private: 55 ::sc_core::sc_port_base *portBase; 56 57 bool finalized; 58 int _maxSize; 59 int _size; 60 61 bool regPortNeeded; 62 63 void finalizePort(StaticSensitivityPort *port); 64 void finalizeFinder(StaticSensitivityFinder *finder); 65 void finalizeReset(Reset *reset); 66 67 void 68 addInterface(::sc_core::sc_interface *iface) 69 { 70 portBase->_gem5AddInterface(iface); 71 _size++; 72 } 73 74 void 75 addInterfaces(::sc_core::sc_port_base *pb) 76 { 77 // Only the ports farthest from the interfaces call register_port. 78 pb->_gem5Port->regPortNeeded = false; 79 for (int i = 0; i < pb->size(); i++) 80 addInterface(pb->_gem5Interface(i)); 81 } 82 83 ::sc_core::sc_interface * 84 getInterface(int i) 85 { 86 return portBase->_gem5Interface(i); 87 } 88 89 struct Binding 90 { 91 explicit Binding(::sc_core::sc_interface *interface) : 92 interface(interface), port(nullptr) 93 {} 94 95 explicit Binding(::sc_core::sc_port_base *port) : 96 interface(nullptr), port(port) 97 {} 98 99 ::sc_core::sc_interface *interface; 100 ::sc_core::sc_port_base *port; 101 }; 102 103 struct Sensitivity 104 { 105 Sensitivity(StaticSensitivityPort *port) : 106 port(port), finder(nullptr) 107 {} 108 109 Sensitivity(StaticSensitivityFinder *finder) : 110 port(nullptr), finder(finder) 111 {} 112 113 StaticSensitivityPort *port; 114 StaticSensitivityFinder *finder; 115 }; 116 117 std::vector<Binding *> bindings; 118 std::vector<Sensitivity *> sensitivities; 119 std::vector<Reset *> resets; 120 121 public: 122 static Port * 123 fromPort(const ::sc_core::sc_port_base *pb) 124 { 125 return pb->_gem5Port; 126 } 127 128 ::sc_core::sc_port_base *sc_port_base() { return portBase; } 129 130 Port(::sc_core::sc_port_base *port_base, int max) : 131 portBase(port_base), finalized(false), _maxSize(max), _size(0), 132 regPortNeeded(true) 133 { 134 allPorts.push_front(this); 135 } 136 137 ~Port() { allPorts.remove(this); } 138 139 void 140 bind(::sc_core::sc_interface *interface) 141 { 142 if (bindings.empty()) 143 addInterface(interface); 144 else 145 bindings.push_back(new Binding(interface)); 146 } 147 148 void 149 bind(::sc_core::sc_port_base *port) 150 { 151 bindings.push_back(new Binding(port)); 152 } 153 154 void sensitive(StaticSensitivityPort *port); 155 void sensitive(StaticSensitivityFinder *finder); 156 void addReset(Reset *reset); 157 158 void finalize(); 159 void regPort(); 160 161 int size() { return _size; } 162 int maxSize() { return _maxSize ? _maxSize : _size; } 163}; 164 165} // namespace sc_gem5 166 167#endif // __SYSTEMC_CORE_PORT_HH__ 168