Subversion Repositories fwrisc

/****************************************************************************

 * fwrisc_tracer_bfm.sv

 *

 * Copyright 2018 Matthew Ballance

 *

 * 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.

 *

 *

 ****************************************************************************/

/**

 * Module: fwrisc_tracer_bfm

 *

 * TODO: Add interface documentation

 */

module fwrisc_tracer_bfm(

                input                   clock,

                input                   reset,

                input [31:0]    addr,

                input [31:0]    instr,

                input                   ivalid,

                input [31:0]    raddr,

                input [31:0]    rdata,

                input                   rwrite,

                input [31:0]    maddr,

                input [31:0]    mdata,

                input [3:0]             mstrb,

                input                   mwrite,

                input                   mvalid

                );

        int unsigned                    m_id;

        import "DPI-C" context function int unsigned fwrisc_tracer_bfm_register(string path);

        initial begin

                $display("fwrisc_tracer_bfm: %m");

                m_id = fwrisc_tracer_bfm_register($sformatf("%m"));

        end

        import "DPI-C" function void fwrisc_tracer_bfm_regwrite(

                        int unsigned    id,

                        int unsigned    raddr,

                        int unsigned    rdata);

        always @(posedge clock) begin

                if (rwrite) begin

                        fwrisc_tracer_bfm_regwrite(m_id, raddr, rdata);

                end

        end

        import "DPI-C" function void fwrisc_tracer_bfm_exec(

                        int unsigned    id,

                        int unsigned    addr,

                        int unsigned    instr);

        always @(posedge clock) begin

                if (ivalid) begin

                        fwrisc_tracer_bfm_exec(m_id, addr, instr);

                end

        end

        import "DPI-C" function void fwrisc_tracer_bfm_memwrite(

                        int unsigned    id,

                        int unsigned    addr,

                        byte unsigned   mask,

                        int unsigned    data);

        always @(posedge clock) begin

                if (mvalid && mwrite) begin

                        fwrisc_tracer_bfm_memwrite(m_id, maddr, mstrb, mdata);

                end

        end

endmodule