1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// $Id: chaos_router.hpp 5188 2012-08-30 00:31:31Z dub $
/*
Copyright (c) 2007-2012, Trustees of The Leland Stanford Junior University
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _CHAOS_ROUTER_HPP_
#define _CHAOS_ROUTER_HPP_
#include <string>
#include <queue>
#include <vector>
#include "module.hpp"
#include "router.hpp"
#include "allocator.hpp"
#include "routefunc.hpp"
#include "outputset.hpp"
#include "buffer_state.hpp"
#include "pipefifo.hpp"
#include "vc.hpp"
class ChaosRouter : public Router {
tRoutingFunction _rf;
vector<OutputSet*> _input_route;
vector<OutputSet*> _mq_route;
enum eQState {
empty, // input avail
filling, // >**H ready to send
full, // T****H ready to send
leaving, // T***> input avail
cut_through, // >***>
shared // >**HT**>
};
PipelineFIFO<Flit> *_crossbar_pipe;
int _multi_queue_size;
int _buffer_size;
vector<queue<Flit *> > _input_frame;
vector<queue<Flit *> > _output_frame;
vector<queue<Flit *> > _multi_queue;
vector<int> _next_queue_cnt;
vector<queue<Credit *> > _credit_queue;
vector<eQState> _input_state;
vector<eQState> _multi_state;
vector<int> _input_output_match;
vector<int> _input_mq_match;
vector<int> _multi_match;
vector<int> _mq_age;
vector<bool> _output_matched;
vector<bool> _mq_matched;
int _cur_channel;
int _read_stall;
bool _IsInjectionChan( int chan ) const;
bool _IsEjectionChan( int chan ) const;
bool _InputReady( int input ) const;
bool _OutputFull( int out ) const;
bool _OutputAvail( int out ) const;
bool _MultiQueueFull( int mq ) const;
int _InputForOutput( int output ) const;
int _MultiQueueForOutput( int output ) const;
int _FindAvailMultiQueue( ) const;
void _NextInterestingChannel( );
void _OutputAdvance( );
void _SendFlits( );
void _SendCredits( );
virtual void _InternalStep( );
public:
ChaosRouter( const Configuration& config,
Module *parent, const string & name, int id,
int inputs, int outputs );
virtual ~ChaosRouter( );
virtual void ReadInputs( );
virtual void WriteOutputs( );
virtual int GetUsedCredit(int out) const {return 0;}
virtual int GetBufferOccupancy(int i) const {return 0;}
#ifdef TRACK_BUFFERS
virtual int GetUsedCreditForClass(int output, int cl) const {return 0;}
virtual int GetBufferOccupancyForClass(int input, int cl) const {return 0;}
#endif
virtual vector<int> UsedCredits() const { return vector<int>(); }
virtual vector<int> FreeCredits() const { return vector<int>(); }
virtual vector<int> MaxCredits() const { return vector<int>(); }
void Display( ostream & os = cout ) const;
};
#endif
|
