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-/*
- * Copyright (c) 2001-2005 The Regents of The University of Michigan
- * All rights reserved.
- *
- * 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.
- */
-
-/* @file
- */
-
-#ifndef __PHYSICAL_MEMORY_HH__
-#define __PHYSICAL_MEMORY_HH__
-
-#include "base/range.hh"
-#include "mem/mem_object.hh"
-#include "mem/packet.hh"
-#include "mem/port.hh"
-#include "sim/eventq.hh"
-#include <map>
-#include <string>
-
-//
-// Functional model for a contiguous block of physical memory. (i.e. RAM)
-//
-class PhysicalMemory : public MemObject
-{
- class MemoryPort : public Port
- {
- PhysicalMemory *memory;
-
- public:
-
- MemoryPort(PhysicalMemory *_memory);
-
- protected:
-
- virtual bool recvTiming(Packet *pkt);
-
- virtual Tick recvAtomic(Packet *pkt);
-
- virtual void recvFunctional(Packet *pkt);
-
- virtual void recvStatusChange(Status status);
-
- virtual void getDeviceAddressRanges(AddrRangeList &resp,
- AddrRangeList &snoop);
-
- virtual int deviceBlockSize();
- };
-
- int numPorts;
-
-
- struct MemResponseEvent : public Event
- {
- Packet *pkt;
- MemoryPort *memoryPort;
-
- MemResponseEvent(Packet *pkt, MemoryPort *memoryPort);
- void process();
- const char *description();
- };
-
- private:
- // prevent copying of a MainMemory object
- PhysicalMemory(const PhysicalMemory &specmem);
- const PhysicalMemory &operator=(const PhysicalMemory &specmem);
-
- protected:
- Addr base_addr;
- Addr pmem_size;
- uint8_t *pmem_addr;
- MemoryPort *port;
- int page_ptr;
- Tick lat;
-
- public:
- Addr new_page();
- uint64_t size() { return pmem_size; }
-
- public:
- PhysicalMemory(const std::string &n, Tick latency);
- virtual ~PhysicalMemory();
-
- public:
- int deviceBlockSize();
- void getAddressRanges(AddrRangeList &resp, AddrRangeList &snoop);
- virtual Port *getPort(const std::string &if_name);
- void virtual init();
-
- // fast back-door memory access for vtophys(), remote gdb, etc.
- // uint64_t phys_read_qword(Addr addr) const;
- private:
- bool doTimingAccess(Packet *pkt, MemoryPort *memoryPort);
- Tick doAtomicAccess(Packet *pkt);
- void doFunctionalAccess(Packet *pkt);
-
- void recvStatusChange(Port::Status status);
-
- public:
- virtual void serialize(std::ostream &os);
- virtual void unserialize(Checkpoint *cp, const std::string &section);
-
-};
-
-#endif //__PHYSICAL_MEMORY_HH__