port.hh revision 13270:99e1cfb8c6e8
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 <vector> 35 36#include "base/cprintf.hh" 37#include "systemc/ext/core/sc_interface.hh" 38#include "systemc/ext/core/sc_port.hh" 39 40namespace sc_gem5 41{ 42 43class StaticSensitivityPort; 44class StaticSensitivityFinder; 45class ResetSensitivityPort; 46 47class Port; 48 49extern std::list<Port *> allPorts; 50 51class Port 52{ 53 private: 54 ::sc_core::sc_port_base *portBase; 55 56 bool finalized; 57 int _maxSize; 58 int _size; 59 60 void finalizePort(StaticSensitivityPort *port); 61 void finalizeFinder(StaticSensitivityFinder *finder); 62 void finalizeReset(ResetSensitivityPort *reset); 63 64 void 65 addInterface(::sc_core::sc_interface *iface) 66 { 67 for (int i = 0; i < _size; i++) { 68 if (getInterface(i) == iface) { 69 std::string msg = 70 csprintf("interface already bound to port: port '%s' (%s)", 71 portBase->name(), portBase->kind()); 72 SC_REPORT_ERROR("(E107) bind interface to port failed", 73 msg.c_str()); 74 } 75 } 76 _size++; 77 portBase->_gem5AddInterface(iface); 78 } 79 80 void 81 addInterfaces(::sc_core::sc_port_base *pb) 82 { 83 for (int i = 0; i < pb->size(); i++) 84 addInterface(pb->_gem5Interface(i)); 85 } 86 87 ::sc_core::sc_interface * 88 getInterface(int i) 89 { 90 return portBase->_gem5Interface(i); 91 } 92 93 struct Binding 94 { 95 explicit Binding(::sc_core::sc_interface *interface) : 96 interface(interface), port(nullptr) 97 {} 98 99 explicit Binding(::sc_core::sc_port_base *port) : 100 interface(nullptr), port(port) 101 {} 102 103 ::sc_core::sc_interface *interface; 104 ::sc_core::sc_port_base *port; 105 }; 106 107 struct Sensitivity 108 { 109 Sensitivity(StaticSensitivityPort *port) : 110 port(port), finder(nullptr), reset(nullptr) 111 {} 112 113 Sensitivity(StaticSensitivityFinder *finder) : 114 port(nullptr), finder(finder), reset(nullptr) 115 {} 116 117 Sensitivity(ResetSensitivityPort *reset) : 118 port(nullptr), finder(nullptr), reset(reset) 119 {} 120 121 StaticSensitivityPort *port; 122 StaticSensitivityFinder *finder; 123 ResetSensitivityPort *reset; 124 }; 125 126 std::vector<Binding *> bindings; 127 std::vector<Sensitivity *> sensitivities; 128 129 public: 130 static Port * 131 fromPort(const ::sc_core::sc_port_base *pb) 132 { 133 return pb->_gem5Port; 134 } 135 136 ::sc_core::sc_port_base *sc_port_base() { return portBase; } 137 138 Port(::sc_core::sc_port_base *port_base, int max) : 139 portBase(port_base), finalized(false), _maxSize(max), _size(0) 140 { 141 allPorts.push_front(this); 142 } 143 144 void 145 bind(::sc_core::sc_interface *interface) 146 { 147 if (bindings.empty()) 148 addInterface(interface); 149 else 150 bindings.push_back(new Binding(interface)); 151 } 152 153 void 154 bind(::sc_core::sc_port_base *port) 155 { 156 bindings.push_back(new Binding(port)); 157 } 158 159 void sensitive(StaticSensitivityPort *port); 160 void sensitive(StaticSensitivityFinder *finder); 161 void sensitive(ResetSensitivityPort *reset); 162 163 void finalize(); 164 165 int size() { return _size; } 166 int maxSize() { return _maxSize; } 167}; 168 169} // namespace sc_gem5 170 171#endif // __SYSTEMC_CORE_PORT_HH__ 172