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/*****************************************************************************
Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
more contributor license agreements. See the NOTICE file distributed
with this work for additional information regarding copyright ownership.
Accellera licenses this file to you 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.
*****************************************************************************/
//==============================================================================
/// @file memory.h
//
/// @brief Object for isolationg memory operations from TLM "shell"
//
//==============================================================================
//
// Original Authors:
// Jack Donovan, ESLX
//
//==============================================================================
#ifndef __MEMORY_H__
#define __MEMORY_H__
#include "tlm.h" // TLM headers
class memory
{
// Member Methods ====================================================
memory(const memory&) /* = delete*/;
memory& operator=(const memory&) /* = delete */;
public:
//=====================================================================
/// @fn memory.h
//
/// @brief memory Constructor
//
/// @details
// Initialize member variables, include allocating and initializing
// the actual memory
//
//=====================================================================
memory
(
const unsigned int ID ///< initiator ID for messaging
, sc_core::sc_time read_delay ///< delay for reads
, sc_core::sc_time write_delay ///< delay for writes
, sc_dt::uint64 memory_size ///< memory size (bytes)
, unsigned int memory_width ///< memory width (bytes)
);
//====================================================================
/// @fn operation
///
/// @brief Performs the Memory Operation specified in the GP
///
/// @details
/// Performs the operation specified by the GP
/// Returns after updating the status of the GP (if required)
/// and updating the time based upon initialization parameters
///
///===================================================================
void
operation(
tlm::tlm_generic_payload &gp ///< TLM2 GP reference
, sc_core::sc_time &delay_time ///< transaction delay
);
//====================================================================
/// @fn get_delay
///
/// @brief Looks at GP and returns delay without doing GP Operation
///
/// @details
/// Performs the operation specified by the GP
/// Returns after updating the status of the GP (if required)
/// and updating the time based upon initialization parameters
///
///===================================================================
void
get_delay(
tlm::tlm_generic_payload &gp ///< TLM2 GP reference
, sc_core::sc_time &delay_time ///< time to be updated
);
unsigned char* get_mem_ptr(void);
private:
/// Check the address vs. range passed at construction
tlm::tlm_response_status
check_address
(
tlm::tlm_generic_payload &gp
);
// Member Variables/Objects ===================================================
private:
const unsigned int m_ID; ///< initiator ID
const sc_core::sc_time m_read_delay; ///< read delay
const sc_core::sc_time m_write_delay; ///< write delay
const sc_dt::uint64 m_memory_size; ///< memory size (bytes)
const unsigned int m_memory_width; ///< memory width (bytes)
unsigned char *m_memory; ///< memory
bool m_previous_warning; ///< limits to one message
};
#endif /* __MEMORY_H__ */
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