Subversion Repositories async_sdm_noc

/*

 Asynchronous SDM NoC

 (C)2011 Wei Song

 Advanced Processor Technologies Group

 Computer Science, the Univ. of Manchester, UK

 Authors:

 Wei Song     wsong83@gmail.com

 License: LGPL 3.0 or later

 Router configuration header file for SDM routers.

 Possible configuration combinations:

 * Wormhole (set VCN to 1)

   ENABLE_EOF [ENABLE_CHANNEL_SLICING] [ENABLE_LOOKAHEAD]

 * SDM (set VCN > 1 without define ENABLE_CLOS)

   ENABLE_EOF [ENABLE_CHANNEL_SLICING] [ENABLE_LOOKAHEAD] [ENABLE_MRMA]

 * SDM-Clos (set VCN > 1 and define ENABLE_CLOS)

   ENABLE_EOF ENABLE_CLOS [ENABLE_CHANNEL_SLICING] [ENABLE_LOOKAHEAD] [ENABLE_CRRD [ENABLE_MRMA]]

 The combinations not presented above are illegal, which may produce unexpected failures.

 History:

 20/09/2009  Initial version. <wsong83@gmail.com>

 23/05/2011  Clean up for opensource. <wsong83@gmail.com>

 26/05/2011  Add ENABLE_MRMA and configuration explanations. <wsong83@gmail.com>

*/

// if VCN > 1, set ENABLE_CLOS to use the 2-stage Clos switch for less switching area

// `define ENABLE_CLOS

// Using the asynchronous virsion of the Concurrent round-robine dispatching

// algorithm for the 2-stage Clos can save some area but introduce a 5%

// throughput loss

// `define ENABLE_CRRD

// for the SDM router using crossbars and the Clos router using CRRD

// algorithm, using the multi-resource match arbiter may save the area in

// switch allocators

// `define ENABLE_MRMA

// set to enable channel slicing for fast data paths

// `define ENABLE_CHANNEL_SLICING

// set to use the early acknowledge of lokkahead pipelines in the critical cycle

// `define ENABLE_LOOKAHEAD

// always set in wormhole and SDM routers to enable the eof bit in data pipeline stages

`define ENABLE_EOF