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acastong |
//decoder_l2_tb.cpp
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is HyperTransport Tunnel IP Core.
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*
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* The Initial Developer of the Original Code is
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* Ecole Polytechnique de Montreal.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Ami Castonguay <acastong@grm.polymtl.ca>
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*
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* Alternatively, the contents of this file may be used under the terms
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* of the Polytechnique HyperTransport Tunnel IP Core Source Code License
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* (the "PHTICSCL License", see the file PHTICSCL.txt), in which case the
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* provisions of PHTICSCL License are applicable instead of those
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* above. If you wish to allow use of your version of this file only
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* under the terms of the PHTICSCL License and not to allow others to use
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* your version of this file under the MPL, indicate your decision by
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* deleting the provisions above and replace them with the notice and
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* other provisions required by the PHTICSCL License. If you do not delete
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* the provisions above, a recipient may use your version of this file
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* under either the MPL or the PHTICSCL License."
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*
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* ***** END LICENSE BLOCK ***** */
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#include "decoder_l2_tb.h"
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#include <iostream>
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#include <string>
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#include <sstream>
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using namespace std;
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decoder_l2_tb::decoder_l2_tb(sc_module_name name) : sc_module(name){
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SC_THREAD(stimulate_input);
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sensitive_pos(clk);
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SC_THREAD(nop_info_validation);
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sensitive_pos(clk);
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SC_THREAD(databuffer_validation);
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sensitive_pos(clk);
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SC_THREAD(disconnect_retry_validation);
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sensitive_pos(clk);
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SC_THREAD(reordering_validation);
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sensitive_pos(clk);
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//Seed random generator with any number
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srand(4052);
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error = false;
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crc1 = 0xFFFFFFFF;
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crc2 = 0xFFFFFFFF;
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}
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void decoder_l2_tb::stimulate_input(){
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resetx = false;
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for(int n = 0; n < 3; n++){
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wait();
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}
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resetx = true;
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//Non-retry tests, normal operation
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send_nop();
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if(error) return;
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send_tgtdone();
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if(error) return;
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send_read();
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if(error) return;
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send_write();
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if(error) return;
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send_ext();
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if(error) return;
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send_ext_fc();
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if(error) return;
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send_ext_fc64();
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if(error) return;
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send_tgtdone_in_data();
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if(error) return;
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send_discon_nop();
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//initiated retry mode
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resetx = false;
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csr_retry = true;
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for(int n =0; n < 3; n++)
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wait();
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resetx = true;
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//Retry mode, normal operation
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send_nop();
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if(error) return;
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send_tgtdone();
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if(error) return;
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send_read();
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if(error) return;
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send_write();
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if(error) return;
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send_ext();
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if(error) return;
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send_ext_fc();
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if(error) return;
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send_ext_fc64();
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if(error) return;
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send_tgtdone_in_data();
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if(error) return;
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send_fc_in_data();
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if(error) return;
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send_fc64_in_data();
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if(error) return;
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send_nop_in_data();
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if(error) return;
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send_discon_nop();
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if(error) return;
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cout << endl << endl << "*** TEST SUCCESSFUL! ***" << endl << endl;
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expect_cd_initiate_retry_disconnect = 99999;
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//Retry mode, create errors & stomped packets
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//not done yet
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}
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void decoder_l2_tb::send_dword(sc_bv<32> dword,bool lctl, bool hctl){
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bool send;
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do{
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//Don't always make the dword available
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send = rand() %10 < 8;
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if(send){
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lk_available_cd = true;
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lk_dword_cd = dword;
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lk_hctl_cd = hctl;
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lk_lctl_cd = lctl;
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}
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wait();
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lk_available_cd = false;
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}while(!send);
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}
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void decoder_l2_tb::send_nop(){
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//Nop is mostly zeroes
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sc_bv<32> dword = 0;
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//Create a random nop entry
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NopEntry entry;
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entry.cd_nopinfo_fc = sc_uint<12>(rand());
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entry.cd_nop_ack_value_fc = rand();
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//Fill the nop bits with the values from entry
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dword.range(19,8) = entry.cd_nopinfo_fc;
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dword.range(31,24) = entry.cd_nop_ack_value_fc;
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//Send then generated nop
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nop_queue.push_back(entry);
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send_dword(dword,true,true);
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if(csr_retry.read()){
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calculate_crc1(dword,true,true);
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send_dword(~crc1,true,false);
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crc1 = 0xFFFFFFFF;
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}
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}
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void decoder_l2_tb::send_tgtdone(){
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//Generate a target done packet
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sc_bv<32> dword;
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getRandomVector(dword);
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sc_bv<6> command = "110011";
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dword.range(5,0) = command;
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//Send the packet
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send_dword(dword,true,true);
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if(csr_retry.read()){
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calculate_crc1(dword,true,true);
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send_dword(~crc1,true,false);
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crc1 = 0xFFFFFFFF;
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}
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//Add to expected entry
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addReorderingEntry(dword,false);
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}
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void decoder_l2_tb::send_read(){
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//Generate first dword of read packet
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sc_bv<32> dword;
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sc_bv<32> dword2;
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getRandomVector(dword);
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sc_bv<2> command = "01";
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dword.range(5,4) = command;
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//Send it
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send_dword(dword,true,true);
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if(csr_retry.read()){
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calculate_crc1(dword,true,true);
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}
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//Repeat for second dword
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getRandomVector(dword2);
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send_dword(dword2,true,true);
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if(csr_retry.read()){
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calculate_crc1(dword2,true,true);
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send_dword(~crc1,true,false);
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crc1 = 0xFFFFFFFF;
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}
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//Add to expected entry
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sc_bv<64> qword;
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qword.range(31,0) = dword;
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qword.range(63,32) = dword2;
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addReorderingEntry(qword,false);
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}
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void decoder_l2_tb::send_write(){
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//Random amount of data following it
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int data_length = rand() % 16;
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///Create and store the data
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DataBufferEntry entry = generate_data_packet(data_length,VC_POSTED);
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databuffer_queue.push_back(entry);
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//Send the write command packet (randomly generated)
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send_write_header(data_length);
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//Then send the data that follows it
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send_data_packet(entry,0,data_length);
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//Then send CRC if in retry mode
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if(csr_retry.read()){
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send_dword(~crc2,false,true);
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crc2 = 0xFFFFFFFF;
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}
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}
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void decoder_l2_tb::send_write_header(int datalength_m1){
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sc_bv<32> dword;
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sc_bv<64> qword = 0;
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getRandomVector(dword);
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sc_bv<3> command = "101";
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dword.range(5,3) = command;
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dword.range(25,22) = sc_uint<4>(datalength_m1);
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qword.range(31,0) = dword;
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send_dword(dword,true,true);
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if(csr_retry.read()){
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calculate_crc2(dword,true,true);
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}
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getRandomVector(dword);
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qword.range(63,32) = dword;
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addReorderingEntry(qword,false);
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send_dword(dword,true,true);
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if(csr_retry.read()){
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calculate_crc2(dword,true,true);
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}
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}
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decoder_l2_tb::DataBufferEntry decoder_l2_tb::generate_data_packet(int datalength_m1,
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VirtualChannel vc){
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DataBufferEntry entry;
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entry.size = datalength_m1;
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entry.vc = vc;
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entry.address_requested = false;
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entry.badcrc = false;
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for(int n = 0; n <= datalength_m1; n++){
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entry.data[n] = rand() & 0xFFF |
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rand() & 0xFFF << 12 |
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rand() & 0xFF << 24;
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}
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return entry;
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}
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void decoder_l2_tb::send_data_packet(DataBufferEntry &entry,
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int offset,
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int last){
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for(int n = offset; n <= last; n++){
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send_dword(sc_uint<32>(entry.data[n]),false,false);
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if(csr_retry.read()){
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calculate_crc2(sc_uint<32>(entry.data[n]),false,false);
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}
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}
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}
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void decoder_l2_tb::send_ext(){
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//Send the 64 bit extension
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sc_bv<32> dword;
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getRandomVector(dword);
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sc_bv<6> command = "111110";
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dword.range(5,0) = command;
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send_dword(dword,true,true);
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if(csr_retry.read()){
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calculate_crc1(dword,true,true);
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}
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//Send a standard read packet
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send_read();
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/** The send_read() function pushed an expected request
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in the queue. Modify it so that a 64b error is
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expected */
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reordering_queue.back().pkt.error64BitExtension = true;
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}
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| 311 |
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| 312 |
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void decoder_l2_tb::send_ext_fc(){
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| 313 |
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sc_bv<32> dword;
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getRandomVector(dword);
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| 315 |
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sc_bv<7> command = "0110111";
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| 316 |
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dword.range(6,0) = command;
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send_dword(dword,true,true);
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| 318 |
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if(csr_retry.read()){
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calculate_crc1(dword,true,true);
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| 320 |
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send_dword(~crc1,true,false);
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crc1 = 0xFFFFFFFF;
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}
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}
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| 324 |
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void decoder_l2_tb::send_ext_fc64(){
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| 326 |
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sc_bv<32> dword;
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| 327 |
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getRandomVector(dword);
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| 328 |
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sc_bv<7> command = "1110111";
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dword.range(6,0) = command;
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send_dword(dword,true,true);
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| 331 |
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if(csr_retry.read()){
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calculate_crc1(dword,true,true);
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| 333 |
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}
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| 334 |
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getRandomVector(dword);
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send_dword(dword,true,true);
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| 336 |
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if(csr_retry.read()){
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| 337 |
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calculate_crc1(dword,true,true);
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| 338 |
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send_dword(~crc1,true,false);
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| 339 |
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crc1 = 0xFFFFFFFF;
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| 340 |
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}
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| 341 |
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}
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| 342 |
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| 343 |
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void decoder_l2_tb::send_tgtdone_in_data(){
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| 344 |
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int data_length = rand() % 12 + 4;
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| 345 |
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DataBufferEntry entry = generate_data_packet(data_length,VC_POSTED);
|
| 346 |
|
|
databuffer_queue.push_back(entry);
|
| 347 |
|
|
send_write_header(data_length);
|
| 348 |
|
|
|
| 349 |
|
|
send_data_packet(entry,0,1);
|
| 350 |
|
|
send_tgtdone();
|
| 351 |
|
|
|
| 352 |
|
|
//Swap packets in retry mode
|
| 353 |
|
|
if(csr_retry.read()){
|
| 354 |
|
|
ReorderingEntry tmp = reordering_queue.back();
|
| 355 |
|
|
reordering_queue.back() = *(reordering_queue.end()-2);
|
| 356 |
|
|
*(reordering_queue.end()-2) = tmp;
|
| 357 |
|
|
}
|
| 358 |
|
|
|
| 359 |
|
|
send_data_packet(entry,2,data_length);
|
| 360 |
|
|
|
| 361 |
|
|
if(csr_retry.read()){
|
| 362 |
|
|
send_dword(~crc2,false,true);
|
| 363 |
|
|
crc2 = 0xFFFFFFFF;
|
| 364 |
|
|
}
|
| 365 |
|
|
}
|
| 366 |
|
|
|
| 367 |
|
|
void decoder_l2_tb::send_fc_in_data(){
|
| 368 |
|
|
int data_length = rand() % 12 + 4;
|
| 369 |
|
|
DataBufferEntry entry = generate_data_packet(data_length,VC_POSTED);
|
| 370 |
|
|
databuffer_queue.push_back(entry);
|
| 371 |
|
|
send_write_header(data_length);
|
| 372 |
|
|
|
| 373 |
|
|
send_data_packet(entry,0,1);
|
| 374 |
|
|
send_ext_fc();
|
| 375 |
|
|
send_data_packet(entry,2,data_length);
|
| 376 |
|
|
|
| 377 |
|
|
if(csr_retry.read()){
|
| 378 |
|
|
send_dword(~crc2,false,true);
|
| 379 |
|
|
crc2 = 0xFFFFFFFF;
|
| 380 |
|
|
}
|
| 381 |
|
|
}
|
| 382 |
|
|
|
| 383 |
|
|
void decoder_l2_tb::send_fc64_in_data(){
|
| 384 |
|
|
int data_length = rand() % 12 + 4;
|
| 385 |
|
|
DataBufferEntry entry = generate_data_packet(data_length,VC_POSTED);
|
| 386 |
|
|
databuffer_queue.push_back(entry);
|
| 387 |
|
|
send_write_header(data_length);
|
| 388 |
|
|
|
| 389 |
|
|
send_data_packet(entry,0,1);
|
| 390 |
|
|
send_ext_fc64();
|
| 391 |
|
|
send_data_packet(entry,2,data_length);
|
| 392 |
|
|
|
| 393 |
|
|
if(csr_retry.read()){
|
| 394 |
|
|
send_dword(~crc2,false,true);
|
| 395 |
|
|
crc2 = 0xFFFFFFFF;
|
| 396 |
|
|
}
|
| 397 |
|
|
}
|
| 398 |
|
|
|
| 399 |
|
|
void decoder_l2_tb::send_nop_in_data(){
|
| 400 |
|
|
int data_length = rand() % 12 + 4;
|
| 401 |
|
|
DataBufferEntry entry = generate_data_packet(data_length,VC_POSTED);
|
| 402 |
|
|
databuffer_queue.push_back(entry);
|
| 403 |
|
|
send_write_header(data_length);
|
| 404 |
|
|
|
| 405 |
|
|
send_data_packet(entry,0,1);
|
| 406 |
|
|
send_nop();
|
| 407 |
|
|
send_data_packet(entry,2,data_length);
|
| 408 |
|
|
|
| 409 |
|
|
if(csr_retry.read()){
|
| 410 |
|
|
send_dword(~crc2,false,true);
|
| 411 |
|
|
crc2 = 0xFFFFFFFF;
|
| 412 |
|
|
}
|
| 413 |
|
|
}
|
| 414 |
|
|
|
| 415 |
|
|
void decoder_l2_tb::send_discon_nop(){
|
| 416 |
|
|
sc_bv<32> dword = 0;
|
| 417 |
|
|
dword[6] = true;
|
| 418 |
|
|
|
| 419 |
|
|
NopEntry entry;
|
| 420 |
|
|
entry.cd_nopinfo_fc = sc_uint<12>(rand());
|
| 421 |
|
|
entry.cd_nop_ack_value_fc = rand();
|
| 422 |
|
|
dword.range(19,8) = entry.cd_nopinfo_fc;
|
| 423 |
|
|
dword.range(31,24) = entry.cd_nop_ack_value_fc;
|
| 424 |
|
|
|
| 425 |
|
|
/** After a disconnect nop, the decoder is expected to initiate\
|
| 426 |
|
|
a disconnect sequence
|
| 427 |
|
|
*/
|
| 428 |
|
|
if(csr_retry.read())
|
| 429 |
|
|
expect_cd_initiate_retry_disconnect = 4;
|
| 430 |
|
|
else
|
| 431 |
|
|
expect_cd_initiate_nonretry_disconnect_lk = 4;
|
| 432 |
|
|
send_dword(dword,true,true);
|
| 433 |
|
|
if(csr_retry.read()){
|
| 434 |
|
|
calculate_crc1(dword,true,true);
|
| 435 |
|
|
send_dword(~crc1,true,false);
|
| 436 |
|
|
crc1 = 0xFFFFFFFF;
|
| 437 |
|
|
}
|
| 438 |
|
|
}
|
| 439 |
|
|
|
| 440 |
|
|
void decoder_l2_tb::nop_info_validation(){
|
| 441 |
|
|
while(!error){
|
| 442 |
|
|
//Start by checking the standard nop information
|
| 443 |
|
|
|
| 444 |
|
|
//Check that entries in the queue are not simply being accumulated without
|
| 445 |
|
|
//ever being used
|
| 446 |
|
|
if(nop_queue.size() > 4){
|
| 447 |
|
|
displayError("ERROR: Nop data not sent"); continue;
|
| 448 |
|
|
}
|
| 449 |
|
|
|
| 450 |
|
|
//When the command decoder says that nop is received, check the validity of the information
|
| 451 |
|
|
if(cd_nop_received_fc.read()){
|
| 452 |
|
|
if(nop_queue.empty()){
|
| 453 |
|
|
displayError("ERROR: Nop data was not sent"); continue;
|
| 454 |
|
|
}
|
| 455 |
|
|
if(cd_nopinfo_fc.read() != nop_queue.front().cd_nopinfo_fc ||
|
| 456 |
|
|
cd_nop_ack_value_fc.read() != nop_queue.front().cd_nop_ack_value_fc)
|
| 457 |
|
|
{
|
| 458 |
|
|
displayError("ERROR: Invalid nop data content"); continue;
|
| 459 |
|
|
}
|
| 460 |
|
|
nop_queue.pop_front();
|
| 461 |
|
|
}
|
| 462 |
|
|
|
| 463 |
|
|
//Check the next packet to ack value
|
| 464 |
|
|
if(cd_rx_next_pkt_to_ack_fc.size() > 4){
|
| 465 |
|
|
displayError("ERROR: next_pkt_to_ack value not udpated correctly"); continue;
|
| 466 |
|
|
}
|
| 467 |
|
|
if(!ack_value.empty()){
|
| 468 |
|
|
if(ack_value.front() == cd_nop_ack_value_fc.read()){
|
| 469 |
|
|
ack_value.pop_front();
|
| 470 |
|
|
}
|
| 471 |
|
|
else if(ack_value.front() != (cd_nop_ack_value_fc.read() + 1)){
|
| 472 |
|
|
displayError("ERROR: Invalid next_pkt_to_ack value"); continue;
|
| 473 |
|
|
}
|
| 474 |
|
|
}
|
| 475 |
|
|
|
| 476 |
|
|
wait();
|
| 477 |
|
|
}
|
| 478 |
|
|
}
|
| 479 |
|
|
|
| 480 |
|
|
void decoder_l2_tb::databuffer_validation(){
|
| 481 |
|
|
//Some default values
|
| 482 |
|
|
last_databuffer_address = 0;
|
| 483 |
|
|
db_address_cd = rand();
|
| 484 |
|
|
int pos_in_entry = 0;
|
| 485 |
|
|
delayed_start_writing_data = false;
|
| 486 |
|
|
delayed_start_writing_data2 = false;
|
| 487 |
|
|
delayed_start_writing_data3 = false;
|
| 488 |
|
|
writing_data = false;
|
| 489 |
|
|
|
| 490 |
|
|
while(!error){
|
| 491 |
|
|
//Store cd_getaddr_db with different degrees of delay. It will be used to verify
|
| 492 |
|
|
//the data pending signal later on
|
| 493 |
|
|
delayed_start_writing_data = cd_getaddr_db.read();
|
| 494 |
|
|
delayed_start_writing_data2 = delayed_start_writing_data;
|
| 495 |
|
|
delayed_start_writing_data3 = delayed_start_writing_data2;
|
| 496 |
|
|
|
| 497 |
|
|
//Check that entries in the queue are not simply being accumulated without
|
| 498 |
|
|
//ever being used
|
| 499 |
|
|
if(databuffer_queue.size() > 2){
|
| 500 |
|
|
displayError("ERROR: Data not sent to databuffer"); continue;
|
| 501 |
|
|
}
|
| 502 |
|
|
|
| 503 |
|
|
//When the command decoder starts writing a data packet to the databuffer
|
| 504 |
|
|
if(cd_getaddr_db.read()){
|
| 505 |
|
|
/** Check that this is a correct behavior
|
| 506 |
|
|
*/
|
| 507 |
|
|
if(writing_data.read()){
|
| 508 |
|
|
displayError("ERROR: Last data entry not finished"); continue;
|
| 509 |
|
|
}
|
| 510 |
|
|
if(databuffer_queue.empty()){
|
| 511 |
|
|
displayError("ERROR: Data entry requested"); continue;
|
| 512 |
|
|
}
|
| 513 |
|
|
if(databuffer_queue.front().address_requested){
|
| 514 |
|
|
displayError("ERROR: Data address already requested"); continue;
|
| 515 |
|
|
}
|
| 516 |
|
|
if(databuffer_queue.front().vc != cd_vctype_db.read()){
|
| 517 |
|
|
displayError("ERROR: Wrong VC requested in databuffer"); continue;
|
| 518 |
|
|
}
|
| 519 |
|
|
if(databuffer_queue.front().size != cd_datalen_db.read()){
|
| 520 |
|
|
displayError("ERROR: Wrong data length requested"); continue;
|
| 521 |
|
|
}
|
| 522 |
|
|
//modify the entry in the queue so that we know that an address has been requested
|
| 523 |
|
|
databuffer_queue.front().address_requested = true;
|
| 524 |
|
|
last_databuffer_address = db_address_cd.read();
|
| 525 |
|
|
db_address_cd = rand();
|
| 526 |
|
|
writing_data = true;
|
| 527 |
|
|
pos_in_entry = 0;
|
| 528 |
|
|
}
|
| 529 |
|
|
|
| 530 |
|
|
//When command decoder writing to databuffer, check that correct data is written
|
| 531 |
|
|
if(cd_write_db.read()){
|
| 532 |
|
|
if(!writing_data.read()){
|
| 533 |
|
|
displayError("ERROR: Unexpected data write"); continue;
|
| 534 |
|
|
}
|
| 535 |
|
|
if(sc_uint<32>(databuffer_queue.front().data[pos_in_entry++]) !=
|
| 536 |
|
|
cd_data_db.read())
|
| 537 |
|
|
{
|
| 538 |
|
|
displayError("ERROR: Wrong data received"); continue;
|
| 539 |
|
|
}
|
| 540 |
|
|
if(pos_in_entry > databuffer_queue.front().size){
|
| 541 |
|
|
databuffer_queue.pop_front();
|
| 542 |
|
|
writing_data = false;
|
| 543 |
|
|
}
|
| 544 |
|
|
}
|
| 545 |
|
|
|
| 546 |
|
|
wait();
|
| 547 |
|
|
}
|
| 548 |
|
|
}
|
| 549 |
|
|
|
| 550 |
|
|
void decoder_l2_tb::disconnect_retry_validation(){
|
| 551 |
|
|
expect_cd_initiate_retry_disconnect = 0;
|
| 552 |
|
|
expect_cd_received_stomped_csr = 0;
|
| 553 |
|
|
expect_cd_initiate_nonretry_disconnect_lk = 0;
|
| 554 |
|
|
|
| 555 |
|
|
while(!error){
|
| 556 |
|
|
//Check if cd_initiate_retry_disconnect is expected to be asserted
|
| 557 |
|
|
if(expect_cd_initiate_retry_disconnect > 0){
|
| 558 |
|
|
//Reduce the count of cycles left before it must be asserted
|
| 559 |
|
|
expect_cd_initiate_retry_disconnect--;
|
| 560 |
|
|
|
| 561 |
|
|
//Remove the expected flag if it becomes asserted
|
| 562 |
|
|
if(cd_initiate_retry_disconnect.read()){
|
| 563 |
|
|
expect_cd_initiate_retry_disconnect = 0;
|
| 564 |
|
|
}
|
| 565 |
|
|
//If the count goes down to 0, give an error (timeout)
|
| 566 |
|
|
else if(!expect_cd_initiate_retry_disconnect){
|
| 567 |
|
|
displayError("ERROR: cd_initiate_retry_disconnect not asserted"); continue;
|
| 568 |
|
|
}
|
| 569 |
|
|
}
|
| 570 |
|
|
//If it is unexpectedly asserted, display error
|
| 571 |
|
|
else if(cd_initiate_retry_disconnect.read()){
|
| 572 |
|
|
displayError("ERROR: cd_initiate_retry_disconnect asserted"); continue;
|
| 573 |
|
|
}
|
| 574 |
|
|
|
| 575 |
|
|
//Check if cd_received_stomped_csr is expected to be asserted
|
| 576 |
|
|
if(expect_cd_received_stomped_csr > 0){
|
| 577 |
|
|
//Reduce the count of cycles left before it must be asserted
|
| 578 |
|
|
expect_cd_received_stomped_csr--;
|
| 579 |
|
|
|
| 580 |
|
|
//Remove the expected flag if it becomes asserted
|
| 581 |
|
|
if(cd_received_stomped_csr.read()){
|
| 582 |
|
|
expect_cd_received_stomped_csr = 0;
|
| 583 |
|
|
}
|
| 584 |
|
|
//If the count goes down to 0, give an error (timeout)
|
| 585 |
|
|
else if(!expect_cd_received_stomped_csr){
|
| 586 |
|
|
displayError("ERROR: cd_received_stomped_csr not asserted"); continue;
|
| 587 |
|
|
}
|
| 588 |
|
|
}
|
| 589 |
|
|
//If it is unexpectedly asserted, display error
|
| 590 |
|
|
else if(cd_received_stomped_csr.read()){
|
| 591 |
|
|
displayError("ERROR: cd_received_stomped_csr asserted"); continue;
|
| 592 |
|
|
}
|
| 593 |
|
|
|
| 594 |
|
|
//Check if cd_initiate_nonretry_disconnect_lk is expected to be asserted
|
| 595 |
|
|
if(expect_cd_initiate_nonretry_disconnect_lk > 0){
|
| 596 |
|
|
//Reduce the count of cycles left before it must be asserted
|
| 597 |
|
|
expect_cd_initiate_nonretry_disconnect_lk--;
|
| 598 |
|
|
|
| 599 |
|
|
//Remove the expected flag if it becomes asserted
|
| 600 |
|
|
if(cd_initiate_nonretry_disconnect_lk.read()){
|
| 601 |
|
|
expect_cd_initiate_nonretry_disconnect_lk = 0;
|
| 602 |
|
|
}
|
| 603 |
|
|
//If the count goes down to 0, give an error (timeout)
|
| 604 |
|
|
else if(!expect_cd_initiate_nonretry_disconnect_lk){
|
| 605 |
|
|
displayError("ERROR: cd_initiate_nonretry_disconnect_lk not asserted"); continue;
|
| 606 |
|
|
}
|
| 607 |
|
|
}
|
| 608 |
|
|
//If it is unexpectedly asserted, display error
|
| 609 |
|
|
else if(cd_initiate_nonretry_disconnect_lk.read()){
|
| 610 |
|
|
displayError("ERROR: cd_initiate_nonretry_disconnect_lk asserted"); continue;
|
| 611 |
|
|
}
|
| 612 |
|
|
|
| 613 |
|
|
wait();
|
| 614 |
|
|
}
|
| 615 |
|
|
|
| 616 |
|
|
}
|
| 617 |
|
|
|
| 618 |
|
|
void decoder_l2_tb::reordering_validation(){
|
| 619 |
|
|
//There is no data pending at the beggining
|
| 620 |
|
|
sc_uint<BUFFERS_ADDRESS_WIDTH> pending_data_address;
|
| 621 |
|
|
bool data_pending = false;
|
| 622 |
|
|
|
| 623 |
|
|
while(!error){
|
| 624 |
|
|
//Check that entries in the queue are not simply being accumulated without
|
| 625 |
|
|
//ever being used
|
| 626 |
|
|
if(reordering_queue.size() > 4){
|
| 627 |
|
|
displayError("ERROR: Packets not sent to reordering"); continue;
|
| 628 |
|
|
}
|
| 629 |
|
|
|
| 630 |
|
|
//If packet is sent to reordering
|
| 631 |
|
|
if(cd_available_ro.read()){
|
| 632 |
|
|
//Check that there is a packet in the queue to avoid reading from an empty
|
| 633 |
|
|
//queue if the decoder is not working correctly
|
| 634 |
|
|
if(reordering_queue.empty()){
|
| 635 |
|
|
ostringstream o;
|
| 636 |
|
|
o << "ERROR: Unexpected command packet received: " <<
|
| 637 |
|
|
cd_packet_ro.read().packet.to_string(SC_HEX);
|
| 638 |
|
|
displayError(o.str().c_str()); continue;
|
| 639 |
|
|
}
|
| 640 |
|
|
|
| 641 |
|
|
//Check that the packet matches the entry in the front of the queue
|
| 642 |
|
|
if(reordering_queue.front().pkt.packet != cd_packet_ro.read().packet ||
|
| 643 |
|
|
reordering_queue.front().pkt.error64BitExtension != cd_packet_ro.read().error64BitExtension)
|
| 644 |
|
|
{
|
| 645 |
|
|
displayError("ERROR: Invalid command packet received"); continue;
|
| 646 |
|
|
}
|
| 647 |
|
|
|
| 648 |
|
|
//Check that the address of the data is correct (if apliccable)
|
| 649 |
|
|
if(reordering_queue.front().has_data &&
|
| 650 |
|
|
cd_packet_ro.read().data_address != last_databuffer_address)
|
| 651 |
|
|
{
|
| 652 |
|
|
displayError("ERROR: Invalid data address in packet sent to command buffers"); continue;
|
| 653 |
|
|
}
|
| 654 |
|
|
|
| 655 |
|
|
//Store what should be the pending data address for this packet
|
| 656 |
|
|
pending_data_address = last_databuffer_address;
|
| 657 |
|
|
//Remove it from the queue
|
| 658 |
|
|
reordering_queue.pop_front();
|
| 659 |
|
|
}
|
| 660 |
|
|
|
| 661 |
|
|
if(cd_data_pending_ro.read() != data_pending)
|
| 662 |
|
|
{
|
| 663 |
|
|
displayError("ERROR: cd_data_pending_ro has wrong value"); continue;
|
| 664 |
|
|
}
|
| 665 |
|
|
|
| 666 |
|
|
/**
|
| 667 |
|
|
Calculate if the decoder should advertise data pending.
|
| 668 |
|
|
Rules :
|
| 669 |
|
|
-No data pending when retry mode is active (csr_retry)
|
| 670 |
|
|
-It starts after a delay of getting address from
|
| 671 |
|
|
databuffer (delayed_start_writing_data2)
|
| 672 |
|
|
-It stays pending (data_pending) until a next command
|
| 673 |
|
|
packet is received (CTL available from link)
|
| 674 |
|
|
*/
|
| 675 |
|
|
data_pending = (data_pending &&
|
| 676 |
|
|
!(lk_lctl_cd.read() && lk_available_cd.read() && !writing_data.read())
|
| 677 |
|
|
|| (delayed_start_writing_data2.read())) && !csr_retry.read();
|
| 678 |
|
|
|
| 679 |
|
|
if(cd_data_pending_ro.read() &&
|
| 680 |
|
|
pending_data_address != cd_data_pending_addr_ro.read())
|
| 681 |
|
|
{
|
| 682 |
|
|
displayError("ERROR: invalid pending data address value"); continue;
|
| 683 |
|
|
}
|
| 684 |
|
|
wait();
|
| 685 |
|
|
}
|
| 686 |
|
|
}
|
| 687 |
|
|
|
| 688 |
|
|
void decoder_l2_tb::displayError(const char * error_message){
|
| 689 |
|
|
cout << error_message << endl;
|
| 690 |
|
|
error = true;
|
| 691 |
|
|
resetx = false;
|
| 692 |
|
|
}
|
| 693 |
|
|
|
| 694 |
|
|
void decoder_l2_tb::getRandomVector(sc_bv<32> &vector){
|
| 695 |
|
|
vector.range(14,0) = sc_uint<15>(rand());
|
| 696 |
|
|
vector.range(29,15) = sc_uint<15>(rand());
|
| 697 |
|
|
vector.range(31,30) = sc_uint<2>(rand());
|
| 698 |
|
|
}
|
| 699 |
|
|
|
| 700 |
|
|
void decoder_l2_tb::getRandomVector(sc_bv<64> &vector){
|
| 701 |
|
|
for(int n = 0; n < 4; n++)
|
| 702 |
|
|
vector.range(15*(n+1) - 1,15*n) = sc_uint<15>(rand());
|
| 703 |
|
|
vector.range(63,60) = sc_uint<4>(rand());
|
| 704 |
|
|
}
|
| 705 |
|
|
|
| 706 |
|
|
void decoder_l2_tb::addReorderingEntry(sc_bv<32> &vector,bool hasData){
|
| 707 |
|
|
sc_bv<64> qword = 0;
|
| 708 |
|
|
qword.range(31,0) = vector;
|
| 709 |
|
|
addReorderingEntry(qword,hasData);
|
| 710 |
|
|
}
|
| 711 |
|
|
|
| 712 |
|
|
void decoder_l2_tb::addReorderingEntry(sc_bv<64> &vector,bool hasData){
|
| 713 |
|
|
ReorderingEntry entry;
|
| 714 |
|
|
entry.pkt.error64BitExtension = false;
|
| 715 |
|
|
entry.pkt.packet = vector;
|
| 716 |
|
|
entry.has_data = hasData;
|
| 717 |
|
|
reordering_queue.push_back(entry);
|
| 718 |
|
|
}
|
| 719 |
|
|
|
| 720 |
|
|
void decoder_l2_tb::calculate_crc1(sc_bv<32> dword,bool lctl, bool hctl){
|
| 721 |
|
|
sc_bv<34> data;
|
| 722 |
|
|
data[33] = hctl;
|
| 723 |
|
|
data.range(32,17) = dword.range(31,16);
|
| 724 |
|
|
data[16] = lctl;
|
| 725 |
|
|
data.range(15,0) = dword.range(15,0);
|
| 726 |
|
|
calculate_crc(crc1,data);
|
| 727 |
|
|
}
|
| 728 |
|
|
|
| 729 |
|
|
void decoder_l2_tb::calculate_crc2(sc_bv<32> dword,bool lctl, bool hctl){
|
| 730 |
|
|
sc_bv<34> data;
|
| 731 |
|
|
data[33] = hctl;
|
| 732 |
|
|
data.range(32,17) = dword.range(31,16);
|
| 733 |
|
|
data[16] = lctl;
|
| 734 |
|
|
data.range(15,0) = dword.range(15,0);
|
| 735 |
|
|
calculate_crc(crc2,data);
|
| 736 |
|
|
}
|
| 737 |
|
|
|
| 738 |
|
|
void decoder_l2_tb::calculate_crc(unsigned &crc,sc_bv<34> &data){
|
| 739 |
|
|
static unsigned poly = 0x04C11DB7;
|
| 740 |
|
|
|
| 741 |
|
|
for(int i = 0; i < 34; i++){
|
| 742 |
|
|
/* xor highest bit w/ message: */
|
| 743 |
|
|
unsigned tmp = ((crc >> 31) & 1) ^ ( ((sc_bit)data[i]) ? 1 : 0);
|
| 744 |
|
|
|
| 745 |
|
|
/* substract poly if greater: */
|
| 746 |
|
|
crc = (tmp) ? (crc << 1) ^ poly : ((crc << 1) | tmp);
|
| 747 |
|
|
}
|
| 748 |
|
|
}
|
