3 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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.
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,
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25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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33 * Description: Perfect switch, of course it is perfect and no latency or what
34 * so ever. Every cycle it is woke up and perform all the
35 * necessary routings that must be done. Note, this switch also
36 * has number of input ports/output ports and has a routing table
41 #ifndef PerfectSwitch_H
42 #define PerfectSwitch_H
44 #include "mem/ruby/common/Global.hh"
45 #include "mem/gems_common/Vector.hh"
46 #include "mem/ruby/common/Consumer.hh"
47 #include "mem/ruby/system/NodeID.hh"
59 class PerfectSwitch : public Consumer {
63 // constructor specifying the number of ports
64 PerfectSwitch(SwitchID sid, SimpleNetwork* network_ptr);
65 void addInPort(const Vector<MessageBuffer*>& in);
66 void addOutPort(const Vector<MessageBuffer*>& out, const NetDest& routing_table_entry);
67 void clearRoutingTables();
69 void reconfigureOutPort(const NetDest& routing_table_entry);
70 int getInLinks() const { return m_in.size(); }
71 int getOutLinks() const { return m_out.size(); }
79 void printStats(ostream& out) const;
81 void printConfig(ostream& out) const;
83 void print(ostream& out) const;
86 // Private copy constructor and assignment operator
87 PerfectSwitch(const PerfectSwitch& obj);
88 PerfectSwitch& operator=(const PerfectSwitch& obj);
90 // Data Members (m_ prefix)
93 // vector of queues from the components
94 Vector<Vector<MessageBuffer*> > m_in;
95 Vector<Vector<MessageBuffer*> > m_out;
96 Vector<NetDest> m_routing_table;
97 Vector<LinkOrder> m_link_order;
98 int m_virtual_networks;
99 int m_round_robin_start;
100 int m_wakeups_wo_switch;
101 SimpleNetwork* m_network_ptr;
104 // Output operator declaration
105 ostream& operator<<(ostream& out, const PerfectSwitch& obj);
107 // ******************* Definitions *******************
109 // Output operator definition
111 ostream& operator<<(ostream& out, const PerfectSwitch& obj)
118 #endif //PerfectSwitch_H