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"
 
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,
    };
 
    enum regId {
        CPUREG_CONFIG0 = 0x0,
 
        CPUREG_INT_PENDING = 0x8,
        CPUREG_INT_STATUS = 0xc,
        CPUREG_INT_MASK = 0x10,
    };
 
  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);
 
    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