CrossbarSwitch.hh 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#ifndef __MEM_RUBY_NETWORK_GARNET_CROSSBAR_SWITCH_HH__
35#define __MEM_RUBY_NETWORK_GARNET_CROSSBAR_SWITCH_HH__
36
37#include <iostream>
38#include <vector>
39
40#include "mem/ruby/common/Consumer.hh"
41#include "mem/ruby/network/garnet2.0/CommonTypes.hh"
42#include "mem/ruby/network/garnet2.0/flitBuffer.hh"
43
44class Router;
45class OutputUnit;
46
47class CrossbarSwitch : public Consumer
48{
49  public:
50    CrossbarSwitch(Router *router);
51    ~CrossbarSwitch();
52    void wakeup();
53    void init();
54    void print(std::ostream& out) const {};
55
56    inline void update_sw_winner(int inport, flit *t_flit)
57    { m_switch_buffer[inport]->insert(t_flit); }
58
59    inline double get_crossbar_activity() { return m_crossbar_activity; }
60
61    uint32_t functionalWrite(Packet *pkt);
62
63  private:
64    int m_num_vcs;
65    int m_num_inports;
66    double m_crossbar_activity;
67    Router *m_router;
68    std::vector<flitBuffer *> m_switch_buffer;
69    std::vector<OutputUnit *> m_output_unit;
70};
71
72#endif // __MEM_RUBY_NETWORK_GARNET_CROSSBAR_SWITCH_HH__
73