1/*
2 * Copyright 2019 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 "dev/intpin.hh"
31
32#include "base/logging.hh"
33
34void
35IntSinkPinBase::bind(Port &peer)
36{
37    source = dynamic_cast<IntSourcePinBase *>(&peer);
38    fatal_if(!source, "Attempt to bind interrupt sink pin %s to "
39            "incompatible port %s.", name(), peer.name());
40    Port::bind(peer);
41}
42
43void
44IntSinkPinBase::unbind()
45{
46    source = nullptr;
47    Port::unbind();
48}
49
50void
51IntSourcePinBase::bind(Port &peer)
52{
53    sink = dynamic_cast<IntSinkPinBase *>(&peer);
54    fatal_if(!sink, "Attempt to bind interrupt source pin %s to "
55            "incompatible port %s.", name(), peer.name());
56    Port::bind(peer);
57
58    if (_state)
59        raise();
60    else
61        lower();
62}
63
64void
65IntSourcePinBase::unbind()
66{
67    sink = nullptr;
68    Port::unbind();
69}
70