abstract_mem.hh revision 2665
112855Sgabeblack@google.com/* 212855Sgabeblack@google.com * Copyright (c) 2001-2005 The Regents of The University of Michigan 312855Sgabeblack@google.com * All rights reserved. 412855Sgabeblack@google.com * 512855Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 612855Sgabeblack@google.com * modification, are permitted provided that the following conditions are 712855Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 812855Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 912855Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 1012855Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1112855Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1212855Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1312855Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1412855Sgabeblack@google.com * this software without specific prior written permission. 1512855Sgabeblack@google.com * 1612855Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1712855Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1812855Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1912855Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2012855Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2112855Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2212855Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2312855Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2412855Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2512855Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2612855Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2712855Sgabeblack@google.com * 2812855Sgabeblack@google.com * Authors: Ron Dreslinski 2912855Sgabeblack@google.com */ 3012855Sgabeblack@google.com 3112855Sgabeblack@google.com/* @file 3212855Sgabeblack@google.com */ 3312855Sgabeblack@google.com 3412855Sgabeblack@google.com#ifndef __PHYSICAL_MEMORY_HH__ 3512855Sgabeblack@google.com#define __PHYSICAL_MEMORY_HH__ 3612855Sgabeblack@google.com 3712855Sgabeblack@google.com#include "base/range.hh" 3812855Sgabeblack@google.com#include "mem/mem_object.hh" 3912855Sgabeblack@google.com#include "mem/packet.hh" 4012855Sgabeblack@google.com#include "mem/port.hh" 4112855Sgabeblack@google.com#include "sim/eventq.hh" 4212855Sgabeblack@google.com#include <map> 4312855Sgabeblack@google.com#include <string> 4412855Sgabeblack@google.com 4512855Sgabeblack@google.com// 4612855Sgabeblack@google.com// Functional model for a contiguous block of physical memory. (i.e. RAM) 4712855Sgabeblack@google.com// 4812855Sgabeblack@google.comclass PhysicalMemory : public MemObject 4912855Sgabeblack@google.com{ 5012855Sgabeblack@google.com class MemoryPort : public Port 5112855Sgabeblack@google.com { 5212855Sgabeblack@google.com PhysicalMemory *memory; 5312855Sgabeblack@google.com 5412855Sgabeblack@google.com public: 5512855Sgabeblack@google.com 5612855Sgabeblack@google.com MemoryPort(const std::string &_name, PhysicalMemory *_memory); 5712855Sgabeblack@google.com 5812855Sgabeblack@google.com protected: 5912855Sgabeblack@google.com 6012855Sgabeblack@google.com virtual bool recvTiming(Packet *pkt); 6112855Sgabeblack@google.com 6212855Sgabeblack@google.com virtual Tick recvAtomic(Packet *pkt); 6312855Sgabeblack@google.com 6412855Sgabeblack@google.com virtual void recvFunctional(Packet *pkt); 6512855Sgabeblack@google.com 6612855Sgabeblack@google.com virtual void recvStatusChange(Status status); 6712855Sgabeblack@google.com 6812855Sgabeblack@google.com virtual void getDeviceAddressRanges(AddrRangeList &resp, 6912855Sgabeblack@google.com AddrRangeList &snoop); 7012855Sgabeblack@google.com 7112855Sgabeblack@google.com virtual int deviceBlockSize(); 7212855Sgabeblack@google.com }; 7312855Sgabeblack@google.com 7412855Sgabeblack@google.com int numPorts; 7512855Sgabeblack@google.com 7612855Sgabeblack@google.com 7712855Sgabeblack@google.com struct MemResponseEvent : public Event 7812855Sgabeblack@google.com { 7912855Sgabeblack@google.com Packet *pkt; 8012855Sgabeblack@google.com MemoryPort *memoryPort; 8112855Sgabeblack@google.com 8212855Sgabeblack@google.com MemResponseEvent(Packet *pkt, MemoryPort *memoryPort); 8312855Sgabeblack@google.com void process(); 8412855Sgabeblack@google.com const char *description(); 8512855Sgabeblack@google.com }; 8612855Sgabeblack@google.com 8712855Sgabeblack@google.com private: 8812855Sgabeblack@google.com // prevent copying of a MainMemory object 8912855Sgabeblack@google.com PhysicalMemory(const PhysicalMemory &specmem); 9012855Sgabeblack@google.com const PhysicalMemory &operator=(const PhysicalMemory &specmem); 9112855Sgabeblack@google.com 9212855Sgabeblack@google.com protected: 9312855Sgabeblack@google.com Addr base_addr; 9412855Sgabeblack@google.com Addr pmem_size; 9512855Sgabeblack@google.com uint8_t *pmem_addr; 9612855Sgabeblack@google.com MemoryPort *port; 9712855Sgabeblack@google.com int page_ptr; 9812855Sgabeblack@google.com Tick lat; 9912855Sgabeblack@google.com 10012855Sgabeblack@google.com public: 10112855Sgabeblack@google.com Addr new_page(); 10212855Sgabeblack@google.com uint64_t size() { return pmem_size; } 10312855Sgabeblack@google.com 10412855Sgabeblack@google.com public: 10512855Sgabeblack@google.com PhysicalMemory(const std::string &n, Tick latency); 10612855Sgabeblack@google.com virtual ~PhysicalMemory(); 10712855Sgabeblack@google.com 10812855Sgabeblack@google.com public: 10912855Sgabeblack@google.com int deviceBlockSize(); 11012855Sgabeblack@google.com void getAddressRanges(AddrRangeList &resp, AddrRangeList &snoop); 11112855Sgabeblack@google.com virtual Port *getPort(const std::string &if_name); 11212855Sgabeblack@google.com void virtual init(); 11312855Sgabeblack@google.com 11412855Sgabeblack@google.com // fast back-door memory access for vtophys(), remote gdb, etc. 11512855Sgabeblack@google.com // uint64_t phys_read_qword(Addr addr) const; 11612855Sgabeblack@google.com private: 11712855Sgabeblack@google.com bool doTimingAccess(Packet *pkt, MemoryPort *memoryPort); 11812855Sgabeblack@google.com Tick doAtomicAccess(Packet *pkt); 11912855Sgabeblack@google.com void doFunctionalAccess(Packet *pkt); 12012855Sgabeblack@google.com 12112855Sgabeblack@google.com void recvStatusChange(Port::Status status); 12212855Sgabeblack@google.com 12312855Sgabeblack@google.com public: 12412855Sgabeblack@google.com virtual void serialize(std::ostream &os); 12512855Sgabeblack@google.com virtual void unserialize(Checkpoint *cp, const std::string §ion); 12612855Sgabeblack@google.com 12712855Sgabeblack@google.com}; 12812855Sgabeblack@google.com 12912855Sgabeblack@google.com#endif //__PHYSICAL_MEMORY_HH__ 13012855Sgabeblack@google.com