851f91f245
Make PioPort use it
Make Physical memory use it as well
src/SConscript:
Add timing port to sconscript
src/dev/io_device.cc:
src/dev/io_device.hh:
Move simple timing pio port stuff into a simple timing port class so it can be used by the physical memory
src/mem/physical.cc:
src/mem/physical.hh:
use a simple timing port stuff instead of rolling our own here
--HG--
extra : convert_revision : e5befbd295a572568cfdca533efb5ed1984c59d1
117 lines
3.5 KiB
C++
117 lines
3.5 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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* Authors: Ron Dreslinski
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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/mem_object.hh"
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#include "mem/packet.hh"
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#include "mem/tport.hh"
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#include "sim/eventq.hh"
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#include <map>
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#include <string>
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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 MemObject
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{
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class MemoryPort : public SimpleTimingPort
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{
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PhysicalMemory *memory;
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public:
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MemoryPort(const std::string &_name, 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 &resp,
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AddrRangeList &snoop);
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virtual int deviceBlockSize();
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};
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int numPorts;
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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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MemoryPort *port;
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int page_ptr;
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Tick lat;
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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, Tick latency);
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virtual ~PhysicalMemory();
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public:
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int deviceBlockSize();
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void getAddressRanges(AddrRangeList &resp, AddrRangeList &snoop);
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virtual Port *getPort(const std::string &if_name, int idx = -1);
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void virtual init();
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unsigned int drain(Event *de);
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private:
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Tick 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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#endif //__PHYSICAL_MEMORY_HH__
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