Subversion Repositories xge_mac

//////////////////////////////////////////////////////////////////////

////                                                              ////

////  File name "sc_cpu_if.h"                                     ////

////                                                              ////

////  This file is part of the "10GE MAC" project                 ////

////  http://www.opencores.org/cores/xge_mac/                     ////

////                                                              ////

////  Author(s):                                                  ////

////      - A. Tanguay (antanguay@opencores.org)                  ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

////                                                              ////

//// Copyright (C) 2008 AUTHORS. All rights reserved.             ////

////                                                              ////

//// This source file may be used and distributed without         ////

//// restriction provided that this copyright statement is not    ////

//// removed from the file and that any derivative work contains  ////

//// the original copyright notice and the associated disclaimer. ////

////                                                              ////

//// This source file is free software; you can redistribute it   ////

//// and/or modify it under the terms of the GNU Lesser General   ////

//// Public License as published by the Free Software Foundation; ////

//// either version 2.1 of the License, or (at your option) any   ////

//// later version.                                               ////

////                                                              ////

//// This source is distributed in the hope that it will be       ////

//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////

//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////

//// PURPOSE.  See the GNU Lesser General Public License for more ////

//// details.                                                     ////

////                                                              ////

//// You should have received a copy of the GNU Lesser General    ////

//// Public License along with this source; if not, download it   ////

//// from http://www.opencores.org/lgpl.shtml                     ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

#ifndef CPU_IF_H

#define CPU_IF_H

#include "systemc.h"

#include "sc_scoreboard.h"

#include "sc_cpu_if.h"

struct rmonStats_t {

    int tx_pkt_cnt;

    int rx_pkt_cnt;

    int tx_octets_cnt;

    int rx_octets_cnt;

};

SC_MODULE(cpu_if) {

  public:

    //---

    // Ports

    sc_in<bool> wb_clk_i;

    sc_in<bool> wb_rst_i;

    sc_in<bool> wb_ack_o;

    sc_in<unsigned int> wb_dat_o;

    sc_in<bool> wb_int_o;

    sc_out<unsigned int> wb_adr_i;

    sc_out<bool> wb_cyc_i;

    sc_out<unsigned int> wb_dat_i;

    sc_out<bool> wb_stb_i;

    sc_out<bool> wb_we_i;

    //---

    // Types

    enum paramId {

        TX_ENABLE,

    };

    enum intId {

        INT_TXD_FIFO_OVFLOW = 0,

        INT_TXD_FIFO_UDFLOW = 1,

        INT_RXD_FIFO_OVFLOW = 2,

        INT_RXD_FIFO_UDFLOW = 3,

        INT_LOCAL_FAULT = 4,

        INT_REMOTE_FAULT = 5,

        INT_PAUSE_FRAME = 6,

        INT_CRC_ERROR = 7,

        INT_FRAGMENT_ERROR = 8,

        INT_LENGHT_ERROR = 9,

    };

    enum regId {

        CPUREG_CONFIG0 = 0x0,

        CPUREG_INT_PENDING = 0x8,

        CPUREG_INT_STATUS = 0xc,

        CPUREG_INT_MASK = 0x10,

        CPUREG_STATSTXOCTETS = 0x80,

        CPUREG_STATSTXPKTS = 0x84,

        CPUREG_STATSRXOCTETS = 0x90,

        CPUREG_STATSRXPKTS = 0x94,

    };

  private:

    //---

    // Variables

    scoreboard *sb;

    scoreboard::sbSourceId sb_id;

    sc_mutex bus_lock;

    sc_semaphore bus_start;

    sc_semaphore bus_done;

    uint bus_addr;

    uint bus_data;

    bool bus_write;

  public:

    //---

    // Variables

    //---

    // Functions

    void init();

    void connect_scoreboard(scoreboard *sbptr, scoreboard::sbSourceId sid);

    void set_param(cpu_if::paramId param, int value);

    void set_interrupt(cpu_if::intId intr);

    void set_interrupt_mask(cpu_if::intId intr, bool value);

    void enable_all_interrupts(void);

    void get_rmon_stats(rmonStats_t *rmon_stats);

    uint read(uint addr);

    void write(uint addr, uint data);

    void writebits(uint addr, uint hbit, uint lbit, uint value);

    //---

    // Threads

    void transactor();

    void monitor();

    SC_CTOR(cpu_if): bus_start(0), bus_done(0) {

        SC_CTHREAD (monitor, wb_clk_i.pos());

        SC_CTHREAD (transactor, wb_clk_i.pos());

    }

};

#endif