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[/] [ht_tunnel/] [tags/] [START/] [rtl/] [systemc/] [flow_control_l2/] [fc_packet_crc_l3.h] - Rev 19
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//fc_packet_crc.h /* ***** 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> * Martin Corriveau * * 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 ***** */ #ifndef FC_PACKET_CRC_L3_H #define FC_PACKET_CRC_L3_H //The Poly used for the CRC32 encoding #define CRC_ENCODER_POLY 0x04C11DB7 #include "../core_synth/synth_datatypes.h" #include "../core_synth/constants.h" ///Caculates per packet CRC for packets being sent out /** @author Ami Castonguay */ class fc_packet_crc_l3 : public sc_module { public: //******************************* // Inputs //******************************* ///Clock to synchronize module sc_in < bool > clk; ///Reset to initialize module sc_in < bool > resetx; ///Bit vector being sent out to link - used to calculate CRC sc_in< sc_bv<32> > data_in; ///Control bit sent to link - used to calculate CRC sc_in< bool > fc_hctl_lk; ///Control bit sent to link - used to calculate CRC sc_in< bool > fc_lctl_lk; ///When set, the CRC is calculated based on what is being sent to the link sc_in< bool > calculate_crc; ///When set, the nop CRC is calculated based on what is being sent to the link sc_in< bool > calculate_nop_crc; ///Clears the curent CRC value (to start a new packet) sc_in< bool > clear_crc; ///Clears the curent nop CRC value (to start a new packet) sc_in< bool > clear_nop_crc; ///Sent from CSR to force a stomp CRC (inverse of good CRC), it is a test mode sc_in<bool> csr_force_single_stomp_fc; ///Sent from CSR to force a bad CRC, it is a test mode sc_in<bool> csr_force_single_error_fc; //******************************* // CRC output signals //******************************* ///Register that holds the CRC value sc_signal< sc_uint<32> > crc_value; ///Register that holds the nop CRC value sc_signal< sc_uint<32> > nop_crc_value; ///Output of the calculated CRC (usually inverse of crc_value) sc_out< sc_uint<32> > crc_output; ///Output of the calculated nop CRC (usually inverse of nop_crc_value) sc_out< sc_uint<32> > nop_crc_output; ///Generates the CRC outputs void clocked_process(); ///SystemC Macro SC_HAS_PROCESS(fc_packet_crc_l3); ///Module constructor fc_packet_crc_l3(sc_module_name name); }; #endif