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/*
* Copyright (c) 2012 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Andreas Hansson
*/
#ifndef __PHYSICAL_MEMORY_HH__
#define __PHYSICAL_MEMORY_HH__
#include "base/addr_range_map.hh"
#include "mem/abstract_mem.hh"
#include "mem/packet.hh"
/**
* The physical memory encapsulates all memories in the system and
* provides basic functionality for accessing those memories without
* going through the memory system and interconnect.
*/
class PhysicalMemory
{
private:
// Global address map
AddrRangeMap<AbstractMemory*> addrMap;
// a mutable cache for the last range that matched an address
mutable AddrRange rangeCache;
// All address-mapped memories
std::vector<AbstractMemory*> memories;
// The total memory size
uint64_t size;
// Prevent copying
PhysicalMemory(const PhysicalMemory&);
// Prevent assignment
PhysicalMemory& operator=(const PhysicalMemory&);
public:
/**
* Create a physical memory object, wrapping a number of memories.
*/
PhysicalMemory(const std::vector<AbstractMemory*>& _memories);
/**
* Nothing to destruct.
*/
~PhysicalMemory() { }
/**
* Check if a physical address is within a range of a memory that
* is part of the global address map.
*
* @param addr A physical address
* @return Whether the address corresponds to a memory
*/
bool isMemAddr(Addr addr) const;
/**
* Get the memory ranges for all memories that are to be reported
* to the configuration table.
*
* @return All configuration table memory ranges
*/
AddrRangeList getConfAddrRanges() const;
/**
* Get the total physical memory size.
*
* @return The sum of all memory sizes
*/
uint64_t totalSize() const { return size; }
/**
*
*/
void access(PacketPtr pkt);
void functionalAccess(PacketPtr pkt);
};
#endif //__PHYSICAL_MEMORY_HH__
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