flit.cc revision 11666 
1/*
2 * Copyright (c) 2008 Princeton University
3 * Copyright (c) 2016 Georgia Institute of Technology
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * Authors: Niket Agarwal
30 *          Tushar Krishna
31 */
32
33
34#include "mem/ruby/network/garnet2.0/flit.hh"
35
36// Constructor for the flit
37flit::flit(int id, int  vc, int vnet, RouteInfo route, int size,
38    MsgPtr msg_ptr, Cycles curTime)
39{
40    m_size = size;
41    m_msg_ptr = msg_ptr;
42    m_enqueue_time = curTime;
43    m_time = curTime;
44    m_id = id;
45    m_vnet = vnet;
46    m_vc = vc;
47    m_route = route;
48    m_stage.first = I_;
49    m_stage.second = m_time;
50
51    if (size == 1) {
52        m_type = HEAD_TAIL_;
53        return;
54    }
55    if (id == 0)
56        m_type = HEAD_;
57    else if (id == (size - 1))
58        m_type = TAIL_;
59    else
60        m_type = BODY_;
61}
62
63// Flit can be printed out for debugging purposes
64void
65flit::print(std::ostream& out) const
66{
67    out << "[flit:: ";
68    out << "Id=" << m_id << " ";
69    out << "Type=" << m_type << " ";
70    out << "Vnet=" << m_vnet << " ";
71    out << "VC=" << m_vc << " ";
72    out << "Src NI=" << m_route.src_ni << " ";
73    out << "Src Router=" << m_route.src_router << " ";
74    out << "Dest NI=" << m_route.dest_ni << " ";
75    out << "Dest Router=" << m_route.dest_router << " ";
76    out << "Enqueue Time=" << m_enqueue_time << " ";
77    out << "]";
78}
79
80bool
81flit::functionalWrite(Packet *pkt)
82{
83    Message *msg = m_msg_ptr.get();
84    return msg->functionalWrite(pkt);
85}
86