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[/] [ht_tunnel/] [trunk/] [rtl/] [systemc/] [flow_control_l2/] [multiplexer_l3.cpp] - Rev 13
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//multiplexer_l3.cpp /* ***** 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): * Jean-Francois Belanger * Ami Castonguay <acastong@grm.polymtl.ca> * * 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 "multiplexer_l3.h" multiplexer_l3::multiplexer_l3(sc_module_name name) : sc_module(name) { SC_METHOD(mux); sensitive_pos << clk; sensitive_neg << resetx; SC_METHOD(output); sensitive << registered_output #ifdef RETRY_MODE_ENABLED << crc_output << nop_crc_output << select_crc_output << select_nop_crc_output #endif ; } void multiplexer_l3::mux( void ) { if (resetx == false) { registered_output = 0; } else { //fin du non-reset #ifdef SYSTEMC_SIM //GCC comlains if it's not an int that is used for the switch //But for synthesis, I don't want to change it to an int because //by default an int has a 32 bit width, which is not what I //want for a MUX selector! switch ((int)fc_ctr_mux.read()) { //synopsys infer_mux #else switch (fc_ctr_mux.read()) { //synopsys infer_mux #endif case FC_MUX_FWD_LSB: //fowrard CMD is sent (LSB) { sc_bv<64> packet = fwd_packet.read().packet; registered_output = packet.range(31,0); } break; case FC_MUX_FWD_MSB : // Forward CMD is sent (MSB) { sc_bv<64> packet = fwd_packet.read().packet; registered_output = packet.range(63,32); } break; case FC_MUX_DB_DATA: // Forward data is sent registered_output = db_data_fwd; break; case FC_MUX_EH : //Error handler packet is sent (data or CMD) registered_output = eh_cmd_data_fc; break; case FC_MUX_CSR: //Csr packet is sent (data or CMD registered_output = csr_dword_fc; break; case FC_MUX_UI_LSB : //user CMD is sent (LSB) registered_output = user_packet.read().range(31,0); break; case FC_MUX_UI_MSB: //user CMD is sent (MSB) registered_output = user_packet.read().range(63,32); break; case FC_MUX_UI_DATA: //User data is sent registered_output = ui_data_fc; break; case FC_MUX_NOP : //nop_sent registered_output = ht_nop_pkt; break; #ifdef RETRY_MODE_ENABLED case FC_MUX_HISTORY: registered_output = history_packet; break; #endif default : //Data not read, keep the same data : FC_MUX_FEEDBACK registered_output = registered_output.read(); } }//fin du non-reset } // fin de fonction void multiplexer_l3::output(){ #ifdef RETRY_MODE_ENABLED sc_uint<2> selector; selector[1] = select_crc_output; selector[0] = select_nop_crc_output; switch(selector){ case 2: fc_dword_lk = crc_output.read(); break; case 1: fc_dword_lk = nop_crc_output.read(); break; default: fc_dword_lk = registered_output; } #else fc_dword_lk = registered_output; #endif }
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