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ring0_mipt |
/*
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* Copyright (c) 2016 by Alex I. Kuznetsov.
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*
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* Part of the LXP32 CPU IP core.
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*
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* This module implements members of the Generator class.
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*/
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#ifdef _MSC_VER
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#include "generator.h"
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <stdexcept>
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#include <cctype>
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#include <ctime>
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Generator::Generator():
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_masters(1),
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_slaves(1),
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_addrWidth(32),
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_portSize(32),
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_portGranularity(32),
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_entityName("intercon"),
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_pipelinedArbiter(false),
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_registeredFeedback(false),
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_unsafeDecoder(false) {}
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void Generator::setMasters(int i) {
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if(i<1) throw std::runtime_error("Invalid number of masters");
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_masters=i;
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}
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void Generator::setSlaves(int i) {
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if(i<1) throw std::runtime_error("Invalid number of slaves");
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_slaves=i;
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}
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void Generator::setAddrWidth(int i) {
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if(i<1) throw std::runtime_error("Invalid address width");
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_addrWidth=i;
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}
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void Generator::setSlaveAddrWidth(int i) {
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if(i<1) throw std::runtime_error("Invalid slave address width");
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_slaveAddrWidth=i;
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}
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void Generator::setPortSize(int i) {
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if(i!=8&&i!=16&&i!=32&&i!=64)
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throw std::runtime_error("Invalid port size: 8, 16, 32 or 64 expected");
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_portSize=i;
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}
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void Generator::setPortGranularity(int i) {
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if(i!=8&&i!=16&&i!=32&&i!=64)
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throw std::runtime_error("Invalid port granularity: 8, 16, 32 or 64 expected");
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_portGranularity=i;
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}
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void Generator::setEntityName(const std::string &str) try {
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if(str.empty()) throw std::exception();
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// First character must be a letter
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if(!std::isalpha(str[0])) throw std::exception();
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// Subsequent characters can be letters, digits or underscores
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for(std::size_t i=1;i<str.size();i++)
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if(!std::isalnum(str[i])&&str[i]!='_') throw std::exception();
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_entityName=str;
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}
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catch(std::exception &) {
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throw std::runtime_error("Invalid entity name");
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}
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void Generator::setPipelinedArbiter(bool b) {
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_pipelinedArbiter=b;
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}
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void Generator::setRegisteredFeedback(bool b) {
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_registeredFeedback=b;
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}
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void Generator::setUnsafeDecoder(bool b) {
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_unsafeDecoder=b;
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}
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int Generator::masters() const {
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return _masters;
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}
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int Generator::slaves() const {
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return _slaves;
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}
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int Generator::addrWidth() const {
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return _addrWidth;
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}
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int Generator::slaveAddrWidth() const {
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return _slaveAddrWidth;
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}
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int Generator::portSize() const {
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return _portSize;
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}
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int Generator::portGranularity() const {
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return _portGranularity;
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}
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std::string Generator::entityName() const {
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return _entityName;
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}
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bool Generator::pipelinedArbiter() const {
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return _pipelinedArbiter;
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}
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bool Generator::registeredFeedback() const {
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return _registeredFeedback;
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}
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bool Generator::unsafeDecoder() const {
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return _unsafeDecoder;
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}
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void Generator::generate(const std::string &filename) {
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prepare();
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std::ofstream out(filename,std::ios_base::out);
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if(!out) throw std::runtime_error("Cannot open \""+filename+"\"");
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writeBanner(out);
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writePreamble(out);
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writeEntity(out);
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writeArchitecture(out);
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}
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/*
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* Private members
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*/
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void Generator::prepare() {
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_fallbackSlave=false;
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if(slaves()<(1<<(addrWidth()-slaveAddrWidth()))&&!unsafeDecoder())
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_fallbackSlave=true;
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_mastersRange.assign(masters()-1,0);
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if(_fallbackSlave) _slavesRange.assign(slaves(),0);
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else _slavesRange.assign(slaves()-1,0);
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int q=portSize()/portGranularity();
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switch(q) {
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case 1:
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_addrRange.assign(addrWidth()-1,0);
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break;
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case 2:
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if(addrWidth()<=1) throw std::runtime_error("Invalid master address width");
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_addrRange.assign(addrWidth()-1,1);
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_selRange.assign(1,0);
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break;
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case 4:
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if(addrWidth()<=2) throw std::runtime_error("Invalid master address width");
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_addrRange.assign(addrWidth()-1,2);
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_selRange.assign(3,0);
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break;
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case 8:
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if(addrWidth()<=3) throw std::runtime_error("Invalid master address width");
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_addrRange.assign(addrWidth()-1,3);
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_selRange.assign(7,0);
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break;
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default:
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throw std::runtime_error("Invalid port size/granularity combination");
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}
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if(slaveAddrWidth()>addrWidth()) throw std::runtime_error("Invalid slave address width");
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if(slaves()>(1<<(addrWidth()-slaveAddrWidth()))) throw std::runtime_error("Invalid slave address width");
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if(slaveAddrWidth()<=_addrRange.low()) throw std::runtime_error("Invalid slave address width");
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_slaveAddrRange.assign(slaveAddrWidth()-1,_addrRange.low());
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if(slaves()>1) {
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_slaveDecoderRange.assign(_addrRange.high(),slaveAddrWidth());
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if(unsafeDecoder()) {
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int requiredSize=0;
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while((1<<requiredSize)<slaves()) requiredSize++;
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_slaveDecoderRange.assign(_slaveDecoderRange.low()+requiredSize-1,
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_slaveDecoderRange.low());
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}
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}
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_dataRange.assign(portSize()-1,0);
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}
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void Generator::writeBanner(std::ostream &os) {
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auto t=std::time(NULL);
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char szTime[256];
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auto r=std::strftime(szTime,256,"%c",std::localtime(&t));
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if(r==0) szTime[0]='\0';
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os<<"---------------------------------------------------------------------"<<std::endl;
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os<<"-- Simple WISHBONE interconnect"<<std::endl;
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os<<"--"<<std::endl;
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os<<"-- Generated by wigen at "<<szTime<<std::endl;
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os<<"--"<<std::endl;
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os<<"-- Configuration:"<<std::endl;
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os<<"-- Number of masters: "<<masters()<<std::endl;
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os<<"-- Number of slaves: "<<slaves()<<std::endl;
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os<<"-- Master address width: "<<addrWidth()<<std::endl;
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os<<"-- Slave address width: "<<slaveAddrWidth()<<std::endl;
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os<<"-- Port size: "<<portSize()<<std::endl;
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os<<"-- Port granularity: "<<portGranularity()<<std::endl;
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os<<"-- Entity name: "<<entityName()<<std::endl;
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os<<"-- Pipelined arbiter: "<<(pipelinedArbiter()?"yes":"no")<<std::endl;
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os<<"-- Registered feedback: "<<(registeredFeedback()?"yes":"no")<<std::endl;
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os<<"-- Unsafe slave decoder: "<<(unsafeDecoder()?"yes":"no")<<std::endl;
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os<<"--"<<std::endl;
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os<<"-- Command line:"<<std::endl;
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os<<"-- wigen -e "<<entityName();
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if(pipelinedArbiter()) os<<" -p";
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if(registeredFeedback()) os<<" -r";
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if(unsafeDecoder()) os<<" -u";
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os<<" "<<masters()<<" "<<slaves()<<" "<<addrWidth()<<" "<<slaveAddrWidth();
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os<<" "<<portSize()<<" "<<portGranularity()<<std::endl;
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os<<"---------------------------------------------------------------------"<<std::endl;
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os<<std::endl;
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}
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void Generator::writePreamble(std::ostream &os) {
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os<<"library ieee;"<<std::endl;
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os<<"use ieee.std_logic_1164.all;"<<std::endl;
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os<<std::endl;
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}
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void Generator::writeEntity(std::ostream &os) {
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os<<"entity "<<entityName()<<" is"<<std::endl;
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os<<"\tport("<<std::endl;
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os<<"\t\tclk_i: in std_logic;"<<std::endl;
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os<<"\t\trst_i: in std_logic;"<<std::endl;
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os<<std::endl;
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for(int i=0;i<masters();i++) {
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os<<"\t\ts"<<i<<"_cyc_i: in std_logic;"<<std::endl;
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os<<"\t\ts"<<i<<"_stb_i: in std_logic;"<<std::endl;
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os<<"\t\ts"<<i<<"_we_i: in std_logic;"<<std::endl;
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if(_selRange.valid())
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os<<"\t\ts"<<i<<"_sel_i: in std_logic_vector("<<_selRange.toString()<<");"<<std::endl;
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if(registeredFeedback()) {
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os<<"\t\ts"<<i<<"_cti_i: in std_logic_vector(2 downto 0);"<<std::endl;
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os<<"\t\ts"<<i<<"_bte_i: in std_logic_vector(1 downto 0);"<<std::endl;
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}
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os<<"\t\ts"<<i<<"_ack_o: out std_logic;"<<std::endl;
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os<<"\t\ts"<<i<<"_adr_i: in std_logic_vector("<<_addrRange.toString()<<");"<<std::endl;
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os<<"\t\ts"<<i<<"_dat_i: in std_logic_vector("<<_dataRange.toString()<<");"<<std::endl;
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os<<"\t\ts"<<i<<"_dat_o: out std_logic_vector("<<_dataRange.toString()<<");"<<std::endl;
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os<<std::endl;
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}
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for(int i=0;i<slaves();i++) {
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os<<"\t\tm"<<i<<"_cyc_o: out std_logic;"<<std::endl;
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os<<"\t\tm"<<i<<"_stb_o: out std_logic;"<<std::endl;
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os<<"\t\tm"<<i<<"_we_o: out std_logic;"<<std::endl;
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if(_selRange.valid())
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os<<"\t\tm"<<i<<"_sel_o: out std_logic_vector("<<_selRange.toString()<<");"<<std::endl;
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if(registeredFeedback()) {
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os<<"\t\tm"<<i<<"_cti_o: out std_logic_vector(2 downto 0);"<<std::endl;
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os<<"\t\tm"<<i<<"_bte_o: out std_logic_vector(1 downto 0);"<<std::endl;
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}
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os<<"\t\tm"<<i<<"_ack_i: in std_logic;"<<std::endl;
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os<<"\t\tm"<<i<<"_adr_o: out std_logic_vector("<<_slaveAddrRange.toString()<<");"<<std::endl;
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os<<"\t\tm"<<i<<"_dat_o: out std_logic_vector("<<_dataRange.toString()<<");"<<std::endl;
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os<<"\t\tm"<<i<<"_dat_i: in std_logic_vector("<<_dataRange.toString()<<")";
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if(i!=slaves()-1) os<<";"<<std::endl<<std::endl;
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else os<<std::endl;
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}
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os<<"\t);"<<std::endl;
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os<<"end entity;"<<std::endl;
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os<<std::endl;
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}
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void Generator::writeArchitecture(std::ostream &os) {
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os<<"architecture rtl of "<<entityName()<<" is"<<std::endl;
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os<<std::endl;
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if(masters()>1) {
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os<<"signal request: std_logic_vector("<<
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_mastersRange.toString()<<");"<<std::endl;
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os<<"signal grant_next: std_logic_vector("<<
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_mastersRange.toString()<<");"<<std::endl;
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os<<"signal grant: std_logic_vector("<<
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_mastersRange.toString()<<");"<<std::endl;
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if(!pipelinedArbiter()) {
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os<<"signal grant_reg: std_logic_vector("<<
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_mastersRange.toString()<<"):=(others=>\'0\');"<<std::endl;
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}
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os<<std::endl;
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}
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if(slaves()>1) {
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os<<"signal select_slave: std_logic_vector("<<
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_slavesRange.toString()<<");"<<std::endl;
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os<<std::endl;
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}
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os<<"signal cyc_mux: std_logic;"<<std::endl;
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os<<"signal stb_mux: std_logic;"<<std::endl;
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os<<"signal we_mux: std_logic;"<<std::endl;
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if(_selRange.valid())
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os<<"signal sel_mux: std_logic_vector("<<_selRange.toString()<<");"<<std::endl;
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if(registeredFeedback()) {
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os<<"signal cti_mux: std_logic_vector(2 downto 0);"<<std::endl;
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os<<"signal bte_mux: std_logic_vector(1 downto 0);"<<std::endl;
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}
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os<<"signal adr_mux: std_logic_vector("<<_addrRange.toString()<<");"<<std::endl;
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os<<"signal wdata_mux: std_logic_vector("<<_dataRange.toString()<<");"<<std::endl;
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os<<std::endl;
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os<<"signal ack_mux: std_logic;"<<std::endl;
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os<<"signal rdata_mux: std_logic_vector("<<_dataRange.toString()<<");"<<std::endl;
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os<<std::endl;
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os<<"begin"<<std::endl;
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os<<std::endl;
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|
if(masters()>1) writeArbiter(os);
|
333 |
|
|
writeMasterMux(os);
|
334 |
|
|
writeMasterDemux(os);
|
335 |
|
|
writeSlaveMux(os);
|
336 |
|
|
writeSlaveDemux(os);
|
337 |
|
|
|
338 |
|
|
os<<"end architecture;"<<std::endl;
|
339 |
|
|
}
|
340 |
|
|
|
341 |
|
|
void Generator::writeArbiter(std::ostream &os) {
|
342 |
|
|
os<<"-- ARBITER"<<std::endl;
|
343 |
|
|
os<<"-- Selects the active master. Masters with lower port numbers"<<std::endl;
|
344 |
|
|
os<<"-- have higher priority. Ongoing cycles are not interrupted."<<std::endl;
|
345 |
|
|
os<<std::endl;
|
346 |
|
|
|
347 |
|
|
os<<"request<=";
|
348 |
|
|
for(int i=_mastersRange.high();i>=_mastersRange.low();i--) {
|
349 |
|
|
os<<"s"<<i<<"_cyc_i";
|
350 |
|
|
if(i>0) os<<'&';
|
351 |
|
|
}
|
352 |
|
|
os<<';'<<std::endl<<std::endl;
|
353 |
|
|
|
354 |
|
|
os<<"grant_next<=";
|
355 |
|
|
for(int i=0;i<masters();i++) {
|
356 |
|
|
if(i>0) os<<'\t';
|
357 |
|
|
os<<decodedLiteral(i,masters());
|
358 |
|
|
os<<" when request("<<i<<")=\'1\' else"<<std::endl;
|
359 |
|
|
}
|
360 |
|
|
os<<"\t(others=>\'0\');"<<std::endl;
|
361 |
|
|
os<<std::endl;
|
362 |
|
|
|
363 |
|
|
if(!pipelinedArbiter()) {
|
364 |
|
|
os<<"grant<=grant_reg when (request and grant_reg)/=";
|
365 |
|
|
os<<binaryLiteral(0,masters());
|
366 |
|
|
os<<" else grant_next;"<<std::endl;
|
367 |
|
|
os<<std::endl;
|
368 |
|
|
|
369 |
|
|
os<<"process (clk_i) is"<<std::endl;
|
370 |
|
|
os<<"begin"<<std::endl;
|
371 |
|
|
os<<"\tif rising_edge(clk_i) then"<<std::endl;
|
372 |
|
|
os<<"\t\tif rst_i=\'1\' then"<<std::endl;
|
373 |
|
|
os<<"\t\t\tgrant_reg<=(others=>\'0\');"<<std::endl;
|
374 |
|
|
os<<"\t\telse"<<std::endl;
|
375 |
|
|
os<<"\t\t\tgrant_reg<=grant;"<<std::endl;
|
376 |
|
|
os<<"\t\tend if;"<<std::endl;
|
377 |
|
|
os<<"\tend if;"<<std::endl;
|
378 |
|
|
os<<"end process;"<<std::endl;
|
379 |
|
|
os<<std::endl;
|
380 |
|
|
}
|
381 |
|
|
else {
|
382 |
|
|
os<<"process (clk_i) is"<<std::endl;
|
383 |
|
|
os<<"begin"<<std::endl;
|
384 |
|
|
os<<"\tif rising_edge(clk_i) then"<<std::endl;
|
385 |
|
|
os<<"\t\tif rst_i=\'1\' then"<<std::endl;
|
386 |
|
|
os<<"\t\t\tgrant<=(others=>\'0\');"<<std::endl;
|
387 |
|
|
os<<"\t\telsif (request and grant)="<<binaryLiteral(0,masters())<<" then"<<std::endl;
|
388 |
|
|
os<<"\t\t\tgrant<=grant_next;"<<std::endl;
|
389 |
|
|
os<<"\t\tend if;"<<std::endl;
|
390 |
|
|
os<<"\tend if;"<<std::endl;
|
391 |
|
|
os<<"end process;"<<std::endl;
|
392 |
|
|
os<<std::endl;
|
393 |
|
|
}
|
394 |
|
|
}
|
395 |
|
|
|
396 |
|
|
void Generator::writeMasterMux(std::ostream &os) {
|
397 |
|
|
os<<"-- MASTER->SLAVE MUX"<<std::endl;
|
398 |
|
|
os<<std::endl;
|
399 |
|
|
|
400 |
|
|
if(masters()>1) {
|
401 |
|
|
os<<"cyc_mux<=";
|
402 |
|
|
for(int i=0;i<masters();i++) {
|
403 |
|
|
if(i>0) os<<'\t';
|
404 |
|
|
os<<"(s"<<i<<"_cyc_i and grant("<<i<<"))";
|
405 |
|
|
if(i<masters()-1) os<<" or"<<std::endl;
|
406 |
|
|
else os<<";"<<std::endl;
|
407 |
|
|
}
|
408 |
|
|
os<<std::endl;
|
409 |
|
|
|
410 |
|
|
os<<"stb_mux<=";
|
411 |
|
|
for(int i=0;i<masters();i++) {
|
412 |
|
|
if(i>0) os<<'\t';
|
413 |
|
|
os<<"(s"<<i<<"_stb_i and grant("<<i<<"))";
|
414 |
|
|
if(i<masters()-1) os<<" or"<<std::endl;
|
415 |
|
|
else os<<";"<<std::endl;
|
416 |
|
|
}
|
417 |
|
|
os<<std::endl;
|
418 |
|
|
|
419 |
|
|
os<<"we_mux<=";
|
420 |
|
|
for(int i=0;i<masters();i++) {
|
421 |
|
|
if(i>0) os<<'\t';
|
422 |
|
|
os<<"(s"<<i<<"_we_i and grant("<<i<<"))";
|
423 |
|
|
if(i<masters()-1) os<<" or"<<std::endl;
|
424 |
|
|
else os<<";"<<std::endl;
|
425 |
|
|
}
|
426 |
|
|
os<<std::endl;
|
427 |
|
|
|
428 |
|
|
if(_selRange.valid()) {
|
429 |
|
|
os<<"sel_mux_gen: for i in sel_mux'range generate"<<std::endl;
|
430 |
|
|
os<<"\tsel_mux(i)<=";
|
431 |
|
|
for(int i=0;i<masters();i++) {
|
432 |
|
|
if(i>0) os<<"\t\t";
|
433 |
|
|
os<<"(s"<<i<<"_sel_i(i) and grant("<<i<<"))";
|
434 |
|
|
if(i<masters()-1) os<<" or"<<std::endl;
|
435 |
|
|
else os<<";"<<std::endl;
|
436 |
|
|
}
|
437 |
|
|
os<<"end generate;"<<std::endl;
|
438 |
|
|
os<<std::endl;
|
439 |
|
|
}
|
440 |
|
|
|
441 |
|
|
if(registeredFeedback()) {
|
442 |
|
|
os<<"cti_mux_gen: for i in cti_mux'range generate"<<std::endl;
|
443 |
|
|
os<<"\tcti_mux(i)<=";
|
444 |
|
|
for(int i=0;i<masters();i++) {
|
445 |
|
|
if(i>0) os<<"\t\t";
|
446 |
|
|
os<<"(s"<<i<<"_cti_i(i) and grant("<<i<<"))";
|
447 |
|
|
if(i<masters()-1) os<<" or"<<std::endl;
|
448 |
|
|
else os<<";"<<std::endl;
|
449 |
|
|
}
|
450 |
|
|
os<<"end generate;"<<std::endl;
|
451 |
|
|
os<<std::endl;
|
452 |
|
|
|
453 |
|
|
os<<"bte_mux_gen: for i in bte_mux'range generate"<<std::endl;
|
454 |
|
|
os<<"\tbte_mux(i)<=";
|
455 |
|
|
for(int i=0;i<masters();i++) {
|
456 |
|
|
if(i>0) os<<"\t\t";
|
457 |
|
|
os<<"(s"<<i<<"_bte_i(i) and grant("<<i<<"))";
|
458 |
|
|
if(i<masters()-1) os<<" or"<<std::endl;
|
459 |
|
|
else os<<";"<<std::endl;
|
460 |
|
|
}
|
461 |
|
|
os<<"end generate;"<<std::endl;
|
462 |
|
|
os<<std::endl;
|
463 |
|
|
}
|
464 |
|
|
|
465 |
|
|
os<<"adr_mux_gen: for i in adr_mux'range generate"<<std::endl;
|
466 |
|
|
os<<"\tadr_mux(i)<=";
|
467 |
|
|
for(int i=0;i<masters();i++) {
|
468 |
|
|
if(i>0) os<<"\t\t";
|
469 |
|
|
os<<"(s"<<i<<"_adr_i(i) and grant("<<i<<"))";
|
470 |
|
|
if(i<masters()-1) os<<" or"<<std::endl;
|
471 |
|
|
else os<<";"<<std::endl;
|
472 |
|
|
}
|
473 |
|
|
os<<"end generate;"<<std::endl;
|
474 |
|
|
os<<std::endl;
|
475 |
|
|
|
476 |
|
|
os<<"wdata_mux_gen: for i in wdata_mux'range generate"<<std::endl;
|
477 |
|
|
os<<"\twdata_mux(i)<=";
|
478 |
|
|
for(int i=0;i<masters();i++) {
|
479 |
|
|
if(i>0) os<<"\t\t";
|
480 |
|
|
os<<"(s"<<i<<"_dat_i(i) and grant("<<i<<"))";
|
481 |
|
|
if(i<masters()-1) os<<" or"<<std::endl;
|
482 |
|
|
else os<<";"<<std::endl;
|
483 |
|
|
}
|
484 |
|
|
os<<"end generate;"<<std::endl;
|
485 |
|
|
os<<std::endl;
|
486 |
|
|
}
|
487 |
|
|
else { // just one master
|
488 |
|
|
os<<"cyc_mux<=s0_cyc_i;"<<std::endl;
|
489 |
|
|
os<<"stb_mux<=s0_stb_i;"<<std::endl;
|
490 |
|
|
os<<"we_mux<=s0_we_i;"<<std::endl;
|
491 |
|
|
if(_selRange.valid()) os<<"sel_mux<=s0_sel_i;"<<std::endl;
|
492 |
|
|
if(registeredFeedback()) {
|
493 |
|
|
os<<"cti_mux<=s0_cti_i;"<<std::endl;
|
494 |
|
|
os<<"bte_mux<=s0_bte_i;"<<std::endl;
|
495 |
|
|
}
|
496 |
|
|
os<<"adr_mux<=s0_adr_i;"<<std::endl;
|
497 |
|
|
os<<"wdata_mux<=s0_dat_i;"<<std::endl;
|
498 |
|
|
os<<std::endl;
|
499 |
|
|
}
|
500 |
|
|
}
|
501 |
|
|
|
502 |
|
|
void Generator::writeMasterDemux(std::ostream &os) {
|
503 |
|
|
os<<"-- MASTER->SLAVE DEMUX"<<std::endl;
|
504 |
|
|
os<<std::endl;
|
505 |
|
|
|
506 |
|
|
if(slaves()>1) {
|
507 |
|
|
os<<"select_slave<=";
|
508 |
|
|
for(int i=0;i<slaves();i++) {
|
509 |
|
|
if(i>0) os<<'\t';
|
510 |
|
|
os<<decodedLiteral(i,_slavesRange.length());
|
511 |
|
|
os<<" when adr_mux("<<_slaveDecoderRange.toString()<<")=";
|
512 |
|
|
os<<binaryLiteral(i,_slaveDecoderRange.length())<<" else"<<std::endl;
|
513 |
|
|
}
|
514 |
|
|
if(_fallbackSlave) {
|
515 |
|
|
os<<'\t'<<decodedLiteral(slaves(),_slavesRange.length())<<
|
516 |
|
|
"; -- fallback slave"<<std::endl;
|
517 |
|
|
}
|
518 |
|
|
else os<<"\t(others=>'-');"<<std::endl;
|
519 |
|
|
os<<std::endl;
|
520 |
|
|
|
521 |
|
|
for(int i=0;i<slaves();i++) {
|
522 |
|
|
os<<'m'<<i<<"_cyc_o<=cyc_mux and select_slave("<<i<<");"<<std::endl;
|
523 |
|
|
os<<'m'<<i<<"_stb_o<=stb_mux and select_slave("<<i<<");"<<std::endl;
|
524 |
|
|
os<<'m'<<i<<"_we_o<=we_mux;"<<std::endl;
|
525 |
|
|
if(_selRange.valid()) os<<'m'<<i<<"_sel_o<=sel_mux;"<<std::endl;
|
526 |
|
|
if(registeredFeedback()) {
|
527 |
|
|
os<<'m'<<i<<"_cti_o<=cti_mux;"<<std::endl;
|
528 |
|
|
os<<'m'<<i<<"_bte_o<=bte_mux;"<<std::endl;
|
529 |
|
|
}
|
530 |
|
|
os<<'m'<<i<<"_adr_o<=adr_mux(m"<<i<<"_adr_o'range);"<<std::endl;
|
531 |
|
|
os<<'m'<<i<<"_dat_o<=wdata_mux;"<<std::endl;
|
532 |
|
|
os<<std::endl;
|
533 |
|
|
}
|
534 |
|
|
}
|
535 |
|
|
else { // just one slave
|
536 |
|
|
os<<"m0_cyc_o<=cyc_mux;"<<std::endl;
|
537 |
|
|
os<<"m0_stb_o<=stb_mux;"<<std::endl;
|
538 |
|
|
os<<"m0_we_o<=we_mux;"<<std::endl;
|
539 |
|
|
if(_selRange.valid()) os<<"m0_sel_o<=sel_mux;"<<std::endl;
|
540 |
|
|
if(registeredFeedback()) {
|
541 |
|
|
os<<"m0_cti_o<=cti_mux;"<<std::endl;
|
542 |
|
|
os<<"m0_bte_o<=bte_mux;"<<std::endl;
|
543 |
|
|
}
|
544 |
|
|
os<<"m0_adr_o<=adr_mux(m0_adr_o'range);"<<std::endl;
|
545 |
|
|
os<<"m0_dat_o<=wdata_mux;"<<std::endl;
|
546 |
|
|
os<<std::endl;
|
547 |
|
|
}
|
548 |
|
|
}
|
549 |
|
|
|
550 |
|
|
void Generator::writeSlaveMux(std::ostream &os) {
|
551 |
|
|
os<<"-- SLAVE->MASTER MUX"<<std::endl;
|
552 |
|
|
os<<std::endl;
|
553 |
|
|
|
554 |
|
|
if(slaves()>1) {
|
555 |
|
|
os<<"ack_mux<=";
|
556 |
|
|
for(int i=0;i<slaves();i++) {
|
557 |
|
|
if(i>0) os<<'\t';
|
558 |
|
|
os<<"(m"<<i<<"_ack_i and select_slave("<<i<<"))";
|
559 |
|
|
if(i<slaves()-1||_fallbackSlave) os<<" or"<<std::endl;
|
560 |
|
|
else os<<';'<<std::endl;
|
561 |
|
|
}
|
562 |
|
|
if(_fallbackSlave) {
|
563 |
|
|
os<<"\t(cyc_mux and stb_mux and select_slave("<<slaves()<<
|
564 |
|
|
")); -- fallback slave"<<std::endl;
|
565 |
|
|
}
|
566 |
|
|
os<<std::endl;
|
567 |
|
|
|
568 |
|
|
os<<"rdata_mux_gen: for i in rdata_mux'range generate"<<std::endl;
|
569 |
|
|
os<<"\trdata_mux(i)<=";
|
570 |
|
|
for(int i=0;i<slaves();i++) {
|
571 |
|
|
if(i>0) os<<"\t\t";
|
572 |
|
|
os<<"(m"<<i<<"_dat_i(i) and select_slave("<<i<<"))";
|
573 |
|
|
if(i<slaves()-1) os<<" or"<<std::endl;
|
574 |
|
|
else os<<";"<<std::endl;
|
575 |
|
|
}
|
576 |
|
|
os<<"end generate;"<<std::endl;
|
577 |
|
|
os<<std::endl;
|
578 |
|
|
}
|
579 |
|
|
else { // just one slave
|
580 |
|
|
os<<"ack_mux<=m0_ack_i;"<<std::endl;
|
581 |
|
|
os<<"rdata_mux<=m0_dat_i;"<<std::endl;
|
582 |
|
|
os<<std::endl;
|
583 |
|
|
}
|
584 |
|
|
}
|
585 |
|
|
|
586 |
|
|
void Generator::writeSlaveDemux(std::ostream &os) {
|
587 |
|
|
os<<"-- SLAVE->MASTER DEMUX"<<std::endl;
|
588 |
|
|
os<<std::endl;
|
589 |
|
|
|
590 |
|
|
if(masters()>1) {
|
591 |
|
|
for(int i=0;i<masters();i++) {
|
592 |
|
|
os<<'s'<<i<<"_ack_o<=ack_mux and grant("<<i<<");"<<std::endl;
|
593 |
|
|
os<<'s'<<i<<"_dat_o<=rdata_mux;"<<std::endl;
|
594 |
|
|
os<<std::endl;
|
595 |
|
|
}
|
596 |
|
|
}
|
597 |
|
|
else { // just one master
|
598 |
|
|
os<<"s0_ack_o<=ack_mux;"<<std::endl;
|
599 |
|
|
os<<"s0_dat_o<=rdata_mux;"<<std::endl;
|
600 |
|
|
os<<std::endl;
|
601 |
|
|
}
|
602 |
|
|
}
|
603 |
|
|
|
604 |
|
|
std::string Generator::binaryLiteral(int value,int n) {
|
605 |
|
|
std::ostringstream oss;
|
606 |
|
|
oss.put('\"');
|
607 |
|
|
for(int i=n-1;i>=0;i--) {
|
608 |
|
|
if(value>=static_cast<int>(sizeof(int)*8)) oss.put('0');
|
609 |
|
|
else if((value>>i)&1) oss.put('1');
|
610 |
|
|
else oss.put('0');
|
611 |
|
|
}
|
612 |
|
|
oss.put('\"');
|
613 |
|
|
return oss.str();
|
614 |
|
|
}
|
615 |
|
|
|
616 |
|
|
std::string Generator::decodedLiteral(int value,int n) {
|
617 |
|
|
std::ostringstream oss;
|
618 |
|
|
oss.put('\"');
|
619 |
|
|
for(int i=n-1;i>=0;i--) {
|
620 |
|
|
if(value==i) oss.put('1');
|
621 |
|
|
else oss.put('0');
|
622 |
|
|
}
|
623 |
|
|
oss.put('\"');
|
624 |
|
|
return oss.str();
|
625 |
|
|
}
|