port.hh revision 13207:034ca389a810 
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 "systemc/ext/core/sc_interface.hh"
37#include "systemc/ext/core/sc_port.hh"
38
39namespace sc_gem5
40{
41
42class StaticSensitivityPort;
43class StaticSensitivityFinder;
44
45class Port;
46
47extern std::list<Port *> allPorts;
48
49class Port
50{
51  private:
52    ::sc_core::sc_port_base *portBase;
53
54    bool finalized;
55    int _maxSize;
56    int _size;
57
58    void finalizePort(StaticSensitivityPort *port);
59    void finalizeFinder(StaticSensitivityFinder *finder);
60
61    void
62    addInterface(::sc_core::sc_interface *i)
63    {
64        _size++;
65        portBase->_gem5AddInterface(i);
66    }
67
68    void
69    addInterfaces(::sc_core::sc_port_base *pb)
70    {
71        for (int i = 0; i < pb->size(); i++)
72            addInterface(pb->_gem5Interface(i));
73    }
74
75    ::sc_core::sc_interface *
76    getInterface(int i)
77    {
78        return portBase->_gem5Interface(i);
79    }
80
81    struct Binding
82    {
83        explicit Binding(::sc_core::sc_interface *interface) :
84            interface(interface), port(nullptr)
85        {}
86
87        explicit Binding(::sc_core::sc_port_base *port) :
88            interface(nullptr), port(port)
89        {}
90
91        ::sc_core::sc_interface *interface;
92        ::sc_core::sc_port_base *port;
93    };
94
95    struct Sensitivity
96    {
97        Sensitivity(StaticSensitivityPort *port) :
98            port(port), finder(nullptr)
99        {}
100
101        Sensitivity(StaticSensitivityFinder *finder) :
102            port(nullptr), finder(finder)
103        {}
104
105        StaticSensitivityPort *port;
106        StaticSensitivityFinder *finder;
107    };
108
109    std::vector<Binding *> bindings;
110    std::vector<Sensitivity *> sensitivities;
111
112  public:
113    static Port *
114    fromPort(const ::sc_core::sc_port_base *pb)
115    {
116        return pb->_gem5Port;
117    }
118
119    ::sc_core::sc_port_base *sc_port_base() { return portBase; }
120
121    Port(::sc_core::sc_port_base *port_base, int max) :
122        portBase(port_base), finalized(false), _maxSize(max), _size(0)
123    {
124        allPorts.push_front(this);
125    }
126
127    void
128    bind(::sc_core::sc_interface *interface)
129    {
130        bindings.push_back(new Binding(interface));
131    }
132
133    void
134    bind(::sc_core::sc_port_base *port)
135    {
136        bindings.push_back(new Binding(port));
137    }
138
139    void sensitive(StaticSensitivityPort *port);
140    void sensitive(StaticSensitivityFinder *finder);
141
142    void finalize();
143
144    int size() { return _size; }
145    int maxSize() { return _maxSize; }
146};
147
148} // namespace sc_gem5
149
150#endif // __SYSTEMC_CORE_PORT_HH__
151