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[/] [ht_tunnel/] [trunk/] [rtl/] [systemc/] [reordering_l2/] [chain_marker_l4.cpp] - Rev 19
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/* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is HyperTransport Tunnel IP Core. * * The Initial Developer of the Original Code is * Ecole Polytechnique de Montreal. * Portions created by the Initial Developer are Copyright (C) 2005 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Ami Castonguay <acastong@grm.polymtl.ca> * Laurent Aubray * * Alternatively, the contents of this file may be used under the terms * of the Polytechnique HyperTransport Tunnel IP Core Source Code License * (the "PHTICSCL License", see the file PHTICSCL.txt), in which case the * provisions of PHTICSCL License are applicable instead of those * above. If you wish to allow use of your version of this file only * under the terms of the PHTICSCL License and not to allow others to use * your version of this file under the MPL, indicate your decision by * deleting the provisions above and replace them with the notice and * other provisions required by the PHTICSCL License. If you do not delete * the provisions above, a recipient may use your version of this file * under either the MPL or the PHTICSCL License." * * ***** END LICENSE BLOCK ***** */ #include "chain_marker_l4.h" chain_marker_l4::chain_marker_l4(sc_module_name name) : sc_module(name) { SC_METHOD(chainMarking); sensitive << in_packet_chain << isReceivingChain << in_packet_destination[0] << in_packet_destination[1]; SC_METHOD(stateMachine); sensitive_neg << resetx; sensitive_pos << clk; } void chain_marker_l4::chainMarking(void) { // If the packet has chain bit =1, we tag the packet as belonging to a chain. // If not but we are in "Chain mode" then we tag it anyway: the packet is the // last of the chain if (in_packet_chain.read() || isReceivingChain.read()) { input_packet_partofchain = true; } else input_packet_partofchain = false; } // Clocked Process. Determines if we are receiving a chain. void chain_marker_l4::stateMachine(void) { if (!resetx.read()) isReceivingChain = false; else { //If there is valid input packet if (in_packet_destination[0].read() || in_packet_destination[1].read()) { //If it is a chain, get in the ReceivingChain state so that //we tag the last packet of the chain correctly if (in_packet_chain.read()) isReceivingChain = true; else // The only way to stop being in "chain send mode" is to receive the last packet // of the chain (and reset) isReceivingChain = false; } /* else{ isReceivingChain = isReceivingChain; }*/ } } #ifndef SYSTEMC_SIM #include "../core_synth/synth_control_packet.cpp" #endif