gem5/mem/physical.hh
Steve Reinhardt e2b329d574 Replace Memory with MemObject; no need for two different levels of hierarchy there.
Get rid of addPort().
Change getPort() behavior on PhysicalMemory.

SConscript:
cpu/simple/cpu.hh:
sim/system.cc:
sim/system.hh:
    Replace Memory with MemObject.
cpu/base.hh:
    No need to declare Port here anymore.
cpu/cpu_exec_context.hh:
    Need PageTable definition.
cpu/simple/cpu.cc:
mem/physical.cc:
mem/physical.hh:
    Replace Memory with MemObject.
    Get rid of addPort(); allow getting anonymous ports with getPort().
mem/translating_port.hh:
    Remove unneeded header.
sim/process.cc:
    Replace Memory with MemObject.
    Change how initialization port gets set up to deal with change in
    addPort()/getPort().  Current solution is not ideal but it works.
sim/process.hh:
    Remove unneeded headers and declarations.
    Make LiveProcess::getDesc() abstract instead of panicing if called.
sim/syscall_emul.hh:
    Fix includes.

--HG--
extra : convert_revision : 11d4ffb54230038afcf7219cc46e51f809329a2f
2006-03-12 17:21:59 -05:00

134 lines
3.8 KiB
C++

/*
* 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 &range_list,
bool &owner);
virtual int deviceBlockSize();
};
virtual Port * getPort(const char *if_name);
int numPorts;
int lat;
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;
int page_ptr;
public:
Addr new_page();
uint64_t size() { return pmem_size; }
public:
PhysicalMemory(const std::string &n);
virtual ~PhysicalMemory();
public:
int deviceBlockSize();
// 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);
};
/*uint64_t
PhysicalMemory::phys_read_qword(Addr addr) const
{
if (addr + sizeof(uint64_t) > pmem_size)
return 0;
return *(uint64_t *)(pmem_addr + addr);
}*/
#endif //__PHYSICAL_MEMORY_HH__