b403abfbdb
The Memory is now a pure virtual base class for all memory type objects (DRAM, physical).
We should consider renaming MemObject to something more meaningful to represent it is for all memory heirarchy objects, perhaps MemHeirObject?
mem/physical.cc:
mem/physical.hh:
Move the port from the base class into the actual object.
--HG--
extra : convert_revision : b7754ee7b90fd8f816f9876dce374c1d43c7e34b
132 lines
3.9 KiB
C++
132 lines
3.9 KiB
C++
/*
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* Copyright (c) 2001-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* @file
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*/
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#ifndef __PHYSICAL_MEMORY_HH__
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#define __PHYSICAL_MEMORY_HH__
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#include "base/range.hh"
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#include "mem/memory.hh"
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//
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// Functional model for a contiguous block of physical memory. (i.e. RAM)
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//
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class PhysicalMemory : public Memory
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{
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class MemoryPort : public Port
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{
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PhysicalMemory *memory;
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public:
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MemoryPort(PhysicalMemory *_memory);
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protected:
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virtual bool recvTiming(Packet &pkt);
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virtual Tick recvAtomic(Packet &pkt);
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virtual void recvFunctional(Packet &pkt);
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virtual void recvStatusChange(Status status);
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virtual void getDeviceAddressRanges(AddrRangeList &range_list,
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bool &owner);
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virtual int deviceBlockSize();
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};
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MemoryPort memoryPort;
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Port * PhysicalMemory::getPort(const char *if_name);
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int lat;
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//event to send response needs to be here
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private:
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// prevent copying of a MainMemory object
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PhysicalMemory(const PhysicalMemory &specmem);
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const PhysicalMemory &operator=(const PhysicalMemory &specmem);
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protected:
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Addr base_addr;
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Addr pmem_size;
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uint8_t *pmem_addr;
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int page_ptr;
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public:
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Addr new_page();
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uint64_t size() { return pmem_size; }
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public:
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PhysicalMemory(const std::string &n);
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virtual ~PhysicalMemory();
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protected:
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// error handling for prot_* functions
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void prot_access_error(Addr addr, int size, const std::string &func);
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public:
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virtual int deviceBlockSize();
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// Read/Write arbitrary amounts of data to simulated memory space
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void prot_read(Addr addr, uint8_t *p, int size);
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void prot_write(Addr addr, const uint8_t *p, int size);
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void prot_memset(Addr addr, uint8_t val, int size);
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// fast back-door memory access for vtophys(), remote gdb, etc.
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uint64_t phys_read_qword(Addr addr) const;
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private:
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bool doTimingAccess(Packet &pkt);
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Tick doAtomicAccess(Packet &pkt);
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void doFunctionalAccess(Packet &pkt);
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void recvStatusChange(Port::Status status);
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public:
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virtual void serialize(std::ostream &os);
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virtual void unserialize(Checkpoint *cp, const std::string §ion);
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};
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/*uint64_t
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PhysicalMemory::phys_read_qword(Addr addr) const
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{
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if (addr + sizeof(uint64_t) > pmem_size)
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return 0;
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return *(uint64_t *)(pmem_addr + addr);
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}*/
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#endif //__PHYSICAL_MEMORY_HH__
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