1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Steve Reinhardt
29 */
30
31/**
32 * @file
33 * Port object definitions.
34 */
35#include <cstring>
36
37#include "base/chunk_generator.hh"
38#include "base/trace.hh"
39#include "mem/mem_object.hh"
40#include "mem/port.hh"
41
42class DefaultPeerPort : public Port
43{
44 protected:
45 void blowUp()
46 {
47 fatal("%s: Unconnected port!", peer->name());
48 }
49
50 public:
51 DefaultPeerPort()
52 : Port("default_port", NULL)
53 { }
54
55 bool recvTiming(PacketPtr)
56 {
57 blowUp();
58 return false;
59 }
60
61 Tick recvAtomic(PacketPtr)
62 {
63 blowUp();
64 return 0;
65 }
66
67 void recvFunctional(PacketPtr)
68 {
69 blowUp();
70 }
71
72 void recvStatusChange(Status)
73 {
74 blowUp();
75 }
76
77 int deviceBlockSize()
78 {
79 blowUp();
80 return 0;
81 }
82
83 void getDeviceAddressRanges(AddrRangeList &, bool &)
84 {
85 blowUp();
86 }
87
88 bool isDefaultPort() const { return true; }
89};
90
91DefaultPeerPort defaultPeerPort;
92
93Port::Port(const std::string &_name, MemObject *_owner)
94 : EventManager(_owner), portName(_name), peer(&defaultPeerPort),
95 owner(_owner)
96{
97}
98
99Port::~Port()
100{
101}
102
103void
104Port::setPeer(Port *port)
105{
106 DPRINTF(Config, "setting peer to %s\n", port->name());
107
108 peer = port;
109}
110
111void
112Port::setOwner(MemObject *_owner)
113{
114 eventq = _owner->queue();
115 owner = _owner;
116}
117
118void
119Port::removeConn()
120{
121 if (peer->getOwner())
122 peer->getOwner()->deletePortRefs(peer);
123 peer = NULL;
124}
125
126void
127Port::blobHelper(Addr addr, uint8_t *p, int size, MemCmd cmd)
128{
129 Request req;
130
131 for (ChunkGenerator gen(addr, size, peerBlockSize());
132 !gen.done(); gen.next()) {
133 req.setPhys(gen.addr(), gen.size(), 0);
134 Packet pkt(&req, cmd, Packet::Broadcast);
135 pkt.dataStatic(p);
136 sendFunctional(&pkt);
137 p += gen.size();
138 }
139}
140
141void
142Port::writeBlob(Addr addr, uint8_t *p, int size)
143{
144 blobHelper(addr, p, size, MemCmd::WriteReq);
145}
146
147void
148Port::readBlob(Addr addr, uint8_t *p, int size)
149{
150 blobHelper(addr, p, size, MemCmd::ReadReq);
151}
152
153void
154Port::memsetBlob(Addr addr, uint8_t val, int size)
155{
156 // quick and dirty...
157 uint8_t *buf = new uint8_t[size];
158
159 std::memset(buf, val, size);
160 blobHelper(addr, buf, size, MemCmd::WriteReq);
161
162 delete [] buf;
163}
164
165
166void
167Port::printAddr(Addr a)
168{
169 Request req(a, 1, 0);
170 Packet pkt(&req, MemCmd::PrintReq, Packet::Broadcast);
171 Packet::PrintReqState prs(std::cerr);
172 pkt.senderState = &prs;
173
174 sendFunctional(&pkt);
175}