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
class Vorpsoc_top_ram_wb_sc_sw__D20_A19_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 *ram_wb_sc_sw;
  // Arbiter
  Vorpsoc_top_wb_conbus_top__pi1 *wb_arbiter;
 
};	// OrpsocAccess ()
 
#endif	// ORPSOC_ACCESS__H