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1 62 wsong0210
/*
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 Asynchronous SDM NoC
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 (C)2011 Wei Song
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 Advanced Processor Technologies Group
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 Computer Science, the Univ. of Manchester, UK
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 Authors:
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 Wei Song     wsong83@gmail.com
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 License: LGPL 3.0 or later
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 Router configuration header file for SDM routers.
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 Possible configuration combinations:
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 * Wormhole (set VCN to 1)
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   ENABLE_EOF [ENABLE_CHANNEL_SLICING] [ENABLE_LOOKAHEAD]
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 * SDM (set VCN > 1 without define ENABLE_CLOS)
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   ENABLE_EOF [ENABLE_CHANNEL_SLICING] [ENABLE_LOOKAHEAD] [ENABLE_MRMA]
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 * SDM-Clos (set VCN > 1 and define ENABLE_CLOS)
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   ENABLE_EOF ENABLE_CLOS [ENABLE_CHANNEL_SLICING] [ENABLE_LOOKAHEAD] [ENABLE_CRRD [ENABLE_MRMA]] [ENABLE_BUFFERED_CLOS]
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 The combinations not presented above are illegal, which may produce unexpected failures.
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 History:
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 20/09/2009  Initial version. <wsong83@gmail.com>
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 23/05/2011  Clean up for opensource. <wsong83@gmail.com>
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 26/05/2011  Add ENABLE_MRMA and configuration explanations. <wsong83@gmail.com>
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 21/06/2011  Prepare to support buffered Clos. <wsong83@gmail.com>
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*/
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// if VCN > 1, set ENABLE_CLOS to use the 2-stage Clos switch for less switching area
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// `define ENABLE_CLOS
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// Using the asynchronous virsion of the Concurrent round-robine dispatching
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// algorithm for the 2-stage Clos can save some area but introduce a 5%
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// throughput loss
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// `define ENABLE_CRRD
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// for the SDM router using crossbars and the Clos router using CRRD
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// algorithm, using the multi-resource match arbiter may save the area in
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// switch allocators
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// `define ENABLE_MRMA
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// set to enable channel slicing for fast data paths
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// `define ENABLE_CHANNEL_SLICING
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// set to use the early acknowledge of lokkahead pipelines in the critical cycle
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// `define ENABLE_LOOKAHEAD
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// always set in wormhole and SDM routers to enable the eof bit in data pipeline stages
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`define ENABLE_EOF
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// set to insert buffers inside the Clos switch
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`define ENABLE_BUFFERED_CLOS

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