Topology.hh revision 9560:322472967603 
1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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
29/*
30 * The topology here is configurable; it can be a hierachical (default
31 * one) or a 2D torus or a 2D torus with half switches killed. I think
32 * all input port has a one-input-one-output switch connected just to
33 * control and bandwidth, since we don't control bandwidth on input
34 * ports.  Basically, the class has a vector of nodes and edges. First
35 * 2*m_nodes elements in the node vector are input and output
36 * ports. Edges are represented in two vectors of src and dest
37 * nodes. All edges have latency.
38 */
39
40#ifndef __MEM_RUBY_NETWORK_SIMPLE_TOPOLOGY_HH__
41#define __MEM_RUBY_NETWORK_SIMPLE_TOPOLOGY_HH__
42
43#include <iostream>
44#include <string>
45#include <vector>
46
47#include "mem/protocol/LinkDirection.hh"
48#include "mem/ruby/common/TypeDefines.hh"
49#include "mem/ruby/network/BasicRouter.hh"
50#include "params/Topology.hh"
51#include "sim/sim_object.hh"
52
53class NetDest;
54class Network;
55
56typedef std::vector<std::vector<int> > Matrix;
57
58struct LinkEntry
59{
60    BasicLink *link;
61    LinkDirection direction;
62};
63
64typedef std::map<std::pair<int, int>, LinkEntry> LinkMap;
65
66class Topology : public SimObject
67{
68  public:
69    typedef TopologyParams Params;
70    Topology(const Params *p);
71    virtual ~Topology() {}
72    const Params *params() const { return (const Params *)_params; }
73
74    void init();
75    int numSwitches() const { return m_number_of_switches; }
76    void createLinks(Network *net, bool isReconfiguration);
77
78    void initNetworkPtr(Network* net_ptr);
79
80    const std::string getName() { return m_name; }
81    void print(std::ostream& out) const { out << "[Topology]"; }
82
83  protected:
84    void addLink(SwitchID src, SwitchID dest, BasicLink* link,
85                 LinkDirection dir);
86    void makeLink(Network *net, SwitchID src, SwitchID dest,
87                  const NetDest& routing_table_entry,
88                  bool isReconfiguration);
89
90    std::string getDesignStr();
91    // Private copy constructor and assignment operator
92    Topology(const Topology& obj);
93    Topology& operator=(const Topology& obj);
94
95    std::string m_name;
96    NodeID m_nodes;
97    int m_number_of_switches;
98
99    std::vector<BasicExtLink*> m_ext_link_vector;
100    std::vector<BasicIntLink*> m_int_link_vector;
101
102    Matrix m_component_latencies;
103    Matrix m_component_inter_switches;
104
105    LinkMap m_link_map;
106    std::vector<BasicRouter*> m_router_vector;
107};
108
109inline std::ostream&
110operator<<(std::ostream& out, const Topology& obj)
111{
112    obj.print(out);
113    out << std::flush;
114    return out;
115}
116
117#endif // __MEM_RUBY_NETWORK_SIMPLE_TOPOLOGY_HH__
118