Subversion Repositories riscv_vhdl

/*

 *  Copyright 2018 Sergey Khabarov, sergeykhbr@gmail.com

 *

 *  Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0

 *

 *  Unless required by applicable law or agreed to in writing, software

 *  distributed under the License is distributed on an "AS IS" BASIS,

 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 *  See the License for the specific language governing permissions and

 *  limitations under the License.

 */

#include "api_core.h"

#include "cpu_riscv_rtl.h"

namespace debugger {

CpuRiscV_RTL::CpuRiscV_RTL(const char *name)

    : IService(name), IHap(HAP_ConfigDone) {

    registerInterface(static_cast<IThread *>(this));

    registerInterface(static_cast<IClock *>(this));

    registerInterface(static_cast<IHap *>(this));

    registerAttribute("Bus", &bus_);

    registerAttribute("FreqHz", &freqHz_);

    registerAttribute("InVcdFile", &InVcdFile_);

    registerAttribute("OutVcdFile", &OutVcdFile_);

    registerAttribute("GenerateRef", &GenerateRef_);

    bus_.make_string("");

    freqHz_.make_uint64(1);

    InVcdFile_.make_string("");

    OutVcdFile_.make_string("");

    GenerateRef_.make_boolean(false);

    RISCV_event_create(&config_done_, "riscv_sysc_config_done");

    RISCV_register_hap(static_cast<IHap *>(this));

    createSystemC();

}

CpuRiscV_RTL::~CpuRiscV_RTL() {

    deleteSystemC();

    RISCV_event_close(&config_done_);

}

void CpuRiscV_RTL::postinitService() {

    ibus_ = static_cast<IMemoryOperation *>(

       RISCV_get_service_iface(bus_.to_string(), IFACE_MEMORY_OPERATION));

    if (!ibus_) {

        RISCV_error("Bus interface '%s' not found",

                    bus_.to_string());

        return;

    }

    if (InVcdFile_.size()) {

        i_vcd_ = sc_create_vcd_trace_file(InVcdFile_.to_string());

        i_vcd_->set_time_unit(1, SC_PS);

    } else {

        i_vcd_ = 0;

    }

    if (OutVcdFile_.size()) {

        o_vcd_ = sc_create_vcd_trace_file(OutVcdFile_.to_string());

        o_vcd_->set_time_unit(1, SC_PS);

    } else {

        o_vcd_ = 0;

    }

    wrapper_->setBus(ibus_);

    wrapper_->setClockHz(freqHz_.to_int());

    wrapper_->generateRef(GenerateRef_.to_bool());

    wrapper_->generateVCD(i_vcd_, o_vcd_);

    top_->generateRef(GenerateRef_.to_bool());

    top_->generateVCD(i_vcd_, o_vcd_);

    if (!run()) {

        RISCV_error("Can't create thread.", NULL);

        return;

    }

}

void CpuRiscV_RTL::createSystemC() {

    sc_set_default_time_unit(1, SC_NS);

    /** Create all objects, then initilize SystemC context: */

    wrapper_ = new RtlWrapper(static_cast<IService *>(this), "wrapper");

    registerInterface(static_cast<ICpuGeneric *>(wrapper_));

    registerInterface(static_cast<ICpuRiscV *>(wrapper_));

    registerInterface(static_cast<IResetListener *>(wrapper_));

    w_clk = wrapper_->o_clk;

    wrapper_->o_nrst(w_nrst);

    wrapper_->i_time(wb_time);

    wrapper_->o_req_mem_ready(w_req_mem_ready);

    wrapper_->i_req_mem_valid(w_req_mem_valid);

    wrapper_->i_req_mem_write(w_req_mem_write);

    wrapper_->i_req_mem_addr(wb_req_mem_addr);

    wrapper_->i_req_mem_strob(wb_req_mem_strob);

    wrapper_->i_req_mem_data(wb_req_mem_data);

    wrapper_->o_resp_mem_data_valid(w_resp_mem_data_valid);

    wrapper_->o_resp_mem_data(wb_resp_mem_data);

    wrapper_->o_interrupt(w_interrupt);

    wrapper_->o_dport_valid(w_dport_valid);

    wrapper_->o_dport_write(w_dport_write);

    wrapper_->o_dport_region(wb_dport_region);

    wrapper_->o_dport_addr(wb_dport_addr);

    wrapper_->o_dport_wdata(wb_dport_wdata);

    wrapper_->i_dport_ready(w_dport_ready);

    wrapper_->i_dport_rdata(wb_dport_rdata);

    top_ = new RiverTop("top");

    top_->i_clk(wrapper_->o_clk);

    top_->i_nrst(w_nrst);

    top_->i_req_mem_ready(w_req_mem_ready);

    top_->o_req_mem_valid(w_req_mem_valid);

    top_->o_req_mem_write(w_req_mem_write);

    top_->o_req_mem_addr(wb_req_mem_addr);

    top_->o_req_mem_strob(wb_req_mem_strob);

    top_->o_req_mem_data(wb_req_mem_data);

    top_->i_resp_mem_data_valid(w_resp_mem_data_valid);

    top_->i_resp_mem_data(wb_resp_mem_data);

    top_->i_ext_irq(w_interrupt);

    top_->o_time(wb_time);

    top_->i_dport_valid(w_dport_valid);

    top_->i_dport_write(w_dport_write);

    top_->i_dport_region(wb_dport_region);

    top_->i_dport_addr(wb_dport_addr);

    top_->i_dport_wdata(wb_dport_wdata);

    top_->o_dport_ready(w_dport_ready);

    top_->o_dport_rdata(wb_dport_rdata);

    sc_start(0, SC_NS);

}

void CpuRiscV_RTL::deleteSystemC() {

    delete wrapper_;

    delete top_;

}

void CpuRiscV_RTL::hapTriggered(IFace *isrc, EHapType type,

                                const char *descr) {

    RISCV_event_set(&config_done_);

}

void CpuRiscV_RTL::stop() {

    sc_stop();

    IThread::stop();

}

void CpuRiscV_RTL::busyLoop() {

    RISCV_event_wait(&config_done_);

    sc_start();

    if (i_vcd_) {

        sc_close_vcd_trace_file(i_vcd_);

    }

    if (o_vcd_) {

        sc_close_vcd_trace_file(o_vcd_);

    }

}

}  // namespace debugger