SinglePortSSRAMBlock.cc

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/*
 * @file SinglePortSSRAMBlock.cc
 *
 * Implementation of SinglePortSSRAMBlock class.
 *
 * Created on: 8.9.2015
 * @author Henry Linjamäki 2015 (henry.linjamaki-no.spam-tut.fi)
 * @note rating: red
 */
 
#include "SinglePortSSRAMBlock.hh"
 
#include "NetlistPort.hh"
#include "NetlistPortGroup.hh"
#include "Parameter.hh"
#include "NetlistFactories.hh"
#include "HDLTemplateInstantiator.hh"
 
#include "FileSystem.hh"
 
namespace ProGe {
 
/**
 * Constructs Single port synchronous SRAM block.
 *
 * @param addressWidth The width of the address port.
 * @param dataWidth The width of the data port.
 * @param memInitFile Name of the memory initialization file loaded during
 *                    RTL-simulation.
 * @param isForSimulation Tells if the block is used in RTL simulation.
 * Affects placement of the HDL source.
 */
SinglePortSSRAMBlock::SinglePortSSRAMBlock(
    const std::string& addressWidth, const std::string& dataWidth,
    const std::string& memInitFile, bool isForSimulation)
    : BaseNetlistBlock("synch_sram", ""), isForSimulation_(isForSimulation) {
    addParameter(Parameter("DATAW", "integer", dataWidth));
    addParameter(Parameter("ADDRW", "integer", addressWidth));
    addParameter(Parameter("INITFILENAME", "string", memInitFile));
    addParameter(Parameter("access_trace", "boolean", "false"));
    addParameter(
        Parameter("ACCESSTRACEFILENAME", "string", "\"access_trace\""));
 
    addPort(PortFactory::clockPort());
 
    // todo add memory ports via PortFactory
    addPortGroup(
        memoryPortGroup_ = new NetlistPortGroup(
            SignalGroupType::BITMASKED_SRAM_PORT,
            new InPort("d", "DATAW", BIT_VECTOR, SignalType::WRITE_DATA),
            new InPort("addr", "ADDRW", BIT_VECTOR, SignalType::ADDRESS),
            new InBitPort(
                "en_x",
                Signal(SignalType::READ_WRITE_REQUEST, ActiveState::LOW)),
            new InBitPort(
                "wr_x", Signal(SignalType::WRITEMODE, ActiveState::LOW)),
            new InPort(
                "bit_wr_x", "DATAW", BIT_VECTOR, SignalType::WRITE_BITMASK),
            new OutPort("q", "DATAW", BIT_VECTOR, SignalType::READ_DATA)));
}
 
SinglePortSSRAMBlock::~SinglePortSSRAMBlock() {}
 
/**
 * Sets a file name where memory access trace is dumped for this memory.
 */
void
SinglePortSSRAMBlock::setAccessTraceFile(const std::string filename) {
    this->setParameter(Parameter("access_trace", "boolean", "true"));
    this->setParameter(Parameter("ACCESSTRACEFILENAME", "string", filename));
}
 
const NetlistPortGroup&
SinglePortSSRAMBlock::memoryPort() const {
    assert(memoryPortGroup_ != nullptr);
    return *memoryPortGroup_;
}
 
void
SinglePortSSRAMBlock::write(const Path& targetBaseDir, HDL targetLang) const {
    Path progeDataDir(Environment::dataDirPath("ProGe"));
 
    std::string tempFile = (targetLang == VHDL)
                               ? std::string("synch_sram.vhdl")
                               : std::string("synch_sram.v");
    std::string targetDir =
        (isForSimulation_) ? std::string("tb")
                           : ((targetLang == VHDL) ? std::string("vhdl")
                                                   : std::string("verilog"));
    HDLTemplateInstantiator().instantiateTemplateFile(
        (progeDataDir / std::string("tb") / tempFile).string(),
        (targetBaseDir / targetDir / tempFile).string());
}
 
} /* namespace ProGe */