abstract_mem.hh revision 2413
12440SN/A/* 22440SN/A * Copyright (c) 2001-2005 The Regents of The University of Michigan 32440SN/A * All rights reserved. 42440SN/A * 52440SN/A * Redistribution and use in source and binary forms, with or without 62440SN/A * modification, are permitted provided that the following conditions are 72440SN/A * met: redistributions of source code must retain the above copyright 82440SN/A * notice, this list of conditions and the following disclaimer; 92440SN/A * redistributions in binary form must reproduce the above copyright 102440SN/A * notice, this list of conditions and the following disclaimer in the 112440SN/A * documentation and/or other materials provided with the distribution; 122440SN/A * neither the name of the copyright holders nor the names of its 132440SN/A * contributors may be used to endorse or promote products derived from 142440SN/A * this software without specific prior written permission. 152440SN/A * 162440SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172440SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182440SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192440SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202440SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212440SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222440SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232440SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242440SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252440SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262440SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu */ 282665Ssaidi@eecs.umich.edu 292665Ssaidi@eecs.umich.edu/* @file 302440SN/A */ 312440SN/A 322440SN/A#ifndef __PHYSICAL_MEMORY_HH__ 332440SN/A#define __PHYSICAL_MEMORY_HH__ 342440SN/A 352972Sgblack@eecs.umich.edu#include "base/range.hh" 366330Sgblack@eecs.umich.edu#include "mem/memory.hh" 378229Snate@binkert.org 3812334Sgabeblack@google.com// 397720Sgblack@eecs.umich.edu// Functional model for a contiguous block of physical memory. (i.e. RAM) 403120Sgblack@eecs.umich.edu// 418300Schander.sudanthi@arm.comclass PhysicalMemory : public Memory 422440SN/A{ 435569Snate@binkert.org class MemoryPort : public Port 445569Snate@binkert.org { 457720Sgblack@eecs.umich.edu PhysicalMemory *memory; 467720Sgblack@eecs.umich.edu 477720Sgblack@eecs.umich.edu public: 487720Sgblack@eecs.umich.edu 497720Sgblack@eecs.umich.edu MemoryPort(PhysicalMemory *_memory); 507720Sgblack@eecs.umich.edu 517720Sgblack@eecs.umich.edu protected: 527720Sgblack@eecs.umich.edu 537707Sgblack@eecs.umich.edu virtual bool recvTiming(Packet &pkt); 545569Snate@binkert.org 555569Snate@binkert.org virtual Tick recvAtomic(Packet &pkt); 565569Snate@binkert.org 572440SN/A virtual void recvFunctional(Packet &pkt); 585569Snate@binkert.org 595569Snate@binkert.org virtual void recvStatusChange(Status status); 604826Ssaidi@eecs.umich.edu 615569Snate@binkert.org virtual void getDeviceAddressRanges(AddrRangeList &range_list, 625569Snate@binkert.org bool &owner); 635569Snate@binkert.org 645569Snate@binkert.org virtual int deviceBlockSize(); 655569Snate@binkert.org 665569Snate@binkert.org }; 672440SN/A 685569Snate@binkert.org MemoryPort memoryPort; 695569Snate@binkert.org 709180Sandreas.hansson@arm.com Port * PhysicalMemory::getPort(const char *if_name); 7110407Smitch.hayenga@arm.com 722440SN/A int lat; 735569Snate@binkert.org 745569Snate@binkert.org //event to send response needs to be here 755569Snate@binkert.org 765569Snate@binkert.org private: 772440SN/A // prevent copying of a MainMemory object 785569Snate@binkert.org PhysicalMemory(const PhysicalMemory &specmem); 792440SN/A const PhysicalMemory &operator=(const PhysicalMemory &specmem); 805569Snate@binkert.org 8111294Sandreas.hansson@arm.com protected: 822440SN/A Addr base_addr; 835569Snate@binkert.org Addr pmem_size; 845569Snate@binkert.org uint8_t *pmem_addr; 855569Snate@binkert.org int page_ptr; 862440SN/A 875569Snate@binkert.org public: 885569Snate@binkert.org Addr new_page(); 892440SN/A uint64_t size() { return pmem_size; } 905569Snate@binkert.org 915569Snate@binkert.org public: 925569Snate@binkert.org PhysicalMemory(const std::string &n); 932440SN/A virtual ~PhysicalMemory(); 945569Snate@binkert.org 955569Snate@binkert.org protected: 965569Snate@binkert.org // error handling for prot_* functions 972440SN/A void prot_access_error(Addr addr, int size, const std::string &func); 985569Snate@binkert.org 995569Snate@binkert.org public: 1002440SN/A virtual int deviceBlockSize(); 1016329Sgblack@eecs.umich.edu 1026329Sgblack@eecs.umich.edu // Read/Write arbitrary amounts of data to simulated memory space 1036329Sgblack@eecs.umich.edu void prot_read(Addr addr, uint8_t *p, int size); 1046329Sgblack@eecs.umich.edu void prot_write(Addr addr, const uint8_t *p, int size); 1057693SAli.Saidi@ARM.com void prot_memset(Addr addr, uint8_t val, int size); 1067720Sgblack@eecs.umich.edu 1077720Sgblack@eecs.umich.edu // fast back-door memory access for vtophys(), remote gdb, etc. 10810417Sandreas.hansson@arm.com uint64_t phys_read_qword(Addr addr) const; 1097720Sgblack@eecs.umich.edu private: 1107720Sgblack@eecs.umich.edu bool doTimingAccess(Packet &pkt); 1117720Sgblack@eecs.umich.edu Tick doAtomicAccess(Packet &pkt); 1127720Sgblack@eecs.umich.edu void doFunctionalAccess(Packet &pkt); 1138300Schander.sudanthi@arm.com 1148300Schander.sudanthi@arm.com void recvStatusChange(Port::Status status); 1158300Schander.sudanthi@arm.com 1168300Schander.sudanthi@arm.com public: 1178300Schander.sudanthi@arm.com virtual void serialize(std::ostream &os); 1188300Schander.sudanthi@arm.com virtual void unserialize(Checkpoint *cp, const std::string §ion); 1192440SN/A}; 1202440SN/A 1215569Snate@binkert.org/*uint64_t 122PhysicalMemory::phys_read_qword(Addr addr) const 123{ 124 if (addr + sizeof(uint64_t) > pmem_size) 125 return 0; 126 127 return *(uint64_t *)(pmem_addr + addr); 128}*/ 129 130 131#endif //__PHYSICAL_MEMORY_HH__ 132