Subversion Repositories openrisc_2011-10-31

// ----------------------------------------------------------------------------

// Access functions for the ORPSoC Verilator model: definition

// Copyright (C) 2008  Embecosm Limited <info@embecosm.com>

// Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>

// This file is part of the cycle accurate model of the OpenRISC 1000 based

// system-on-chip, ORPSoC, built using Verilator.

// This program 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 3 of the License, or (at your

// option) any later version.

// This program 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 program.  If not, see <http://www.gnu.org/licenses/>.

// ----------------------------------------------------------------------------

// $Id: OrpsocAccess.h 303 2009-02-16 11:20:17Z jeremy $

#ifndef ORPSOC_ACCESS__H

#define ORPSOC_ACCESS__H

#include <stdint.h>

class Vorpsoc_top;

class Vorpsoc_top_orpsoc_top;

class Vorpsoc_top_or1200_ctrl;

class Vorpsoc_top_or1200_except;

class Vorpsoc_top_or1200_sprs;

class Vorpsoc_top_or1200_dpram;

// Main memory access class - will change if main memory size or other 

// parameters change

//Old ram_wbclass: class Vorpsoc_top_ram_wb_sc_sw__D20_A19_M800000;

class Vorpsoc_top_wb_ram_b3__D20_A17_M800000;

// SoC Arbiter class - will also change if any modifications to bus architecture

//class Vorpsoc_top_wb_conbus_top__pi1;

//! Access functions to the Verilator model

//! This class encapsulates access to the Verilator model, allowing other

//! Classes to access model state, without needing to be built within the

//! Verilator environment.

class OrpsocAccess

{

public:

  // Constructor

  OrpsocAccess (Vorpsoc_top *orpsoc_top);

  // Accessor functions

  bool      getExFreeze ();

  bool      getWbFreeze ();

  uint32_t  getWbInsn ();

  uint32_t  getIdInsn ();

  uint32_t  getExInsn ();

  uint32_t  getWbPC ();

  uint32_t  getIdPC ();

  uint32_t  getExPC ();

  bool  getExceptFlushpipe ();

  bool  getExDslot ();

  uint32_t getExceptType();

  // Get a specific GPR from the register file

  uint32_t  getGpr (uint32_t regNum);

  //SPR accessessors

  uint32_t  getSprSr ();

  uint32_t  getSprEpcr ();

  uint32_t  getSprEear ();

  uint32_t  getSprEsr ();

  // Wishbone SRAM accessor functions

  uint32_t  get_mem32 (uint32_t addr);

  uint8_t   get_mem8 (uint32_t addr);

  void  set_mem32 (uint32_t addr, uint32_t data);

  // Trigger a $readmemh for the RAM array

  void  do_ram_readmemh (void);

  /*

  // Arbiter access functions

  uint8_t getWbArbGrant ();

  // Master Signal Access functions

  uint32_t  getWbArbMastDatI (uint32_t mast_num);

  uint32_t  getWbArbMastDatO (uint32_t mast_num);

  uint32_t  getWbArbMastAdrI (uint32_t mast_num);

  uint8_t  getWbArbMastSelI (uint32_t mast_num);

  uint8_t getWbArbMastSlaveSelDecoded (uint32_t mast_num);

  bool  getWbArbMastWeI (uint32_t mast_num);

  bool  getWbArbMastCycI (uint32_t mast_num);

  bool  getWbArbMastStbI (uint32_t mast_num);

  bool  getWbArbMastAckO (uint32_t mast_num);

  bool  getWbArbMastErrO (uint32_t mast_num);

  */

private:

  // Pointers to modules with accessor functions

  Vorpsoc_top_or1200_ctrl       *or1200_ctrl;

  Vorpsoc_top_or1200_except     *or1200_except;

  Vorpsoc_top_or1200_sprs       *or1200_sprs;

  Vorpsoc_top_or1200_dpram      *rf_a;

  /*Vorpsoc_top_ram_wb_sc_sw*//*Vorpsoc_top_ram_wb_sc_sw__D20_A19_M800000*/ Vorpsoc_top_wb_ram_b3__D20_A17_M800000 *ram_wb_sc_sw;

  // Arbiter

  //Vorpsoc_top_wb_conbus_top__pi1 *wb_arbiter;

};      // OrpsocAccess ()

#endif  // ORPSOC_ACCESS__H