port.cc revision 13288:f1c04129f709 
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#include "systemc/core/port.hh"
31
32#include "systemc/core/process.hh"
33#include "systemc/core/sensitivity.hh"
34#include "systemc/ext/channel/sc_signal_in_if.hh"
35
36namespace sc_gem5
37{
38
39void
40Port::finalizePort(StaticSensitivityPort *port)
41{
42    for (int i = 0; i < size(); i++)
43        port->addEvent(&getInterface(i)->default_event());
44}
45
46void
47Port::finalizeFinder(StaticSensitivityFinder *finder)
48{
49    for (int i = 0; i < size(); i++)
50        finder->addEvent(&finder->find(getInterface(i)));
51}
52
53void
54Port::finalizeReset(Reset *reset)
55{
56    assert(size() <= 1);
57    if (size()) {
58        auto iface =
59            dynamic_cast<sc_core::sc_signal_in_if<bool> *>(getInterface(0));
60        assert(iface);
61        if (!reset->install(iface))
62            delete reset;
63    }
64}
65
66void
67Port::sensitive(StaticSensitivityPort *port)
68{
69    if (finalized)
70        finalizePort(port);
71    else
72        sensitivities.push_back(new Sensitivity(port));
73}
74
75void
76Port::sensitive(StaticSensitivityFinder *finder)
77{
78    if (finalized)
79        finalizeFinder(finder);
80    else
81        sensitivities.push_back(new Sensitivity(finder));
82}
83
84void
85Port::addReset(Reset *reset)
86{
87    if (finalized)
88        finalizeReset(reset);
89    else
90        resets.push_back(reset);
91}
92
93void
94Port::finalize()
95{
96    if (finalized)
97        return;
98    finalized = true;
99
100    for (auto &b: bindings) {
101        if (b->interface) {
102            addInterface(b->interface);
103        } else {
104            b->port->_gem5Port->finalize();
105            addInterfaces(b->port);
106        }
107        delete b;
108    }
109
110    bindings.clear();
111
112    for (auto &s: sensitivities) {
113        if (s->port)
114            finalizePort(s->port);
115        else
116            finalizeFinder(s->finder);
117        delete s;
118    }
119
120    sensitivities.clear();
121
122    for (auto &r: resets)
123        finalizeReset(r);
124
125    resets.clear();
126}
127
128void
129Port::regPort()
130{
131    if (!regPortNeeded)
132        return;
133
134    for (int i = 0; i < size(); i++)
135        getInterface(i)->register_port(*portBase, portBase->_ifTypeName());
136}
137
138std::list<Port *> allPorts;
139
140} // namespace sc_gem5
141