physical.hh revision 2414
112808Srobert.scheffel1@tu-dresden.de/* 212808Srobert.scheffel1@tu-dresden.de * Copyright (c) 2001-2005 The Regents of The University of Michigan 312808Srobert.scheffel1@tu-dresden.de * All rights reserved. 412808Srobert.scheffel1@tu-dresden.de * 512808Srobert.scheffel1@tu-dresden.de * Redistribution and use in source and binary forms, with or without 612808Srobert.scheffel1@tu-dresden.de * modification, are permitted provided that the following conditions are 712808Srobert.scheffel1@tu-dresden.de * met: redistributions of source code must retain the above copyright 812808Srobert.scheffel1@tu-dresden.de * notice, this list of conditions and the following disclaimer; 912808Srobert.scheffel1@tu-dresden.de * redistributions in binary form must reproduce the above copyright 1012808Srobert.scheffel1@tu-dresden.de * notice, this list of conditions and the following disclaimer in the 1112808Srobert.scheffel1@tu-dresden.de * documentation and/or other materials provided with the distribution; 1212808Srobert.scheffel1@tu-dresden.de * neither the name of the copyright holders nor the names of its 1312808Srobert.scheffel1@tu-dresden.de * contributors may be used to endorse or promote products derived from 1412808Srobert.scheffel1@tu-dresden.de * this software without specific prior written permission. 1512808Srobert.scheffel1@tu-dresden.de * 1612808Srobert.scheffel1@tu-dresden.de * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1712808Srobert.scheffel1@tu-dresden.de * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1812808Srobert.scheffel1@tu-dresden.de * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1912808Srobert.scheffel1@tu-dresden.de * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2012808Srobert.scheffel1@tu-dresden.de * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2112808Srobert.scheffel1@tu-dresden.de * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2212808Srobert.scheffel1@tu-dresden.de * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2312808Srobert.scheffel1@tu-dresden.de * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2412808Srobert.scheffel1@tu-dresden.de * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2512808Srobert.scheffel1@tu-dresden.de * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2612808Srobert.scheffel1@tu-dresden.de * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2712808Srobert.scheffel1@tu-dresden.de */ 2812808Srobert.scheffel1@tu-dresden.de 2912808Srobert.scheffel1@tu-dresden.de/* @file 3012808Srobert.scheffel1@tu-dresden.de */ 3112808Srobert.scheffel1@tu-dresden.de 3212808Srobert.scheffel1@tu-dresden.de#ifndef __PHYSICAL_MEMORY_HH__ 3312808Srobert.scheffel1@tu-dresden.de#define __PHYSICAL_MEMORY_HH__ 3412808Srobert.scheffel1@tu-dresden.de 3512808Srobert.scheffel1@tu-dresden.de#include "base/range.hh" 3612808Srobert.scheffel1@tu-dresden.de#include "mem/memory.hh" 3712808Srobert.scheffel1@tu-dresden.de#include "mem/packet.hh" 3812808Srobert.scheffel1@tu-dresden.de 3912808Srobert.scheffel1@tu-dresden.de// 4012808Srobert.scheffel1@tu-dresden.de// Functional model for a contiguous block of physical memory. (i.e. RAM) 4112808Srobert.scheffel1@tu-dresden.de// 4212808Srobert.scheffel1@tu-dresden.declass PhysicalMemory : public Memory 4312808Srobert.scheffel1@tu-dresden.de{ 4412808Srobert.scheffel1@tu-dresden.de class MemoryPort : public Port 45 { 46 PhysicalMemory *memory; 47 48 public: 49 50 MemoryPort(PhysicalMemory *_memory); 51 52 protected: 53 54 virtual bool recvTiming(Packet &pkt); 55 56 virtual Tick recvAtomic(Packet &pkt); 57 58 virtual void recvFunctional(Packet &pkt); 59 60 virtual void recvStatusChange(Status status); 61 62 virtual void getDeviceAddressRanges(AddrRangeList &range_list, 63 bool &owner); 64 65 virtual int deviceBlockSize(); 66 67 }; 68 69 MemoryPort memoryPort; 70 71 Port * PhysicalMemory::getPort(const char *if_name); 72 73 int lat; 74 75 //event to send response needs to be here 76 77 private: 78 // prevent copying of a MainMemory object 79 PhysicalMemory(const PhysicalMemory &specmem); 80 const PhysicalMemory &operator=(const PhysicalMemory &specmem); 81 82 protected: 83 Addr base_addr; 84 Addr pmem_size; 85 uint8_t *pmem_addr; 86 int page_ptr; 87 88 public: 89 Addr new_page(); 90 uint64_t size() { return pmem_size; } 91 92 public: 93 PhysicalMemory(const std::string &n); 94 virtual ~PhysicalMemory(); 95 96 protected: 97 // error handling for prot_* functions 98 void prot_access_error(Addr addr, int size, Command func); 99 100 public: 101 virtual int deviceBlockSize(); 102 103 void prot_memset(Addr addr, uint8_t val, int size); 104 105 // fast back-door memory access for vtophys(), remote gdb, etc. 106 // uint64_t phys_read_qword(Addr addr) const; 107 private: 108 bool doTimingAccess(Packet &pkt); 109 Tick doAtomicAccess(Packet &pkt); 110 void doFunctionalAccess(Packet &pkt); 111 112 void recvStatusChange(Port::Status status); 113 114 public: 115 virtual void serialize(std::ostream &os); 116 virtual void unserialize(Checkpoint *cp, const std::string §ion); 117}; 118 119/*uint64_t 120PhysicalMemory::phys_read_qword(Addr addr) const 121{ 122 if (addr + sizeof(uint64_t) > pmem_size) 123 return 0; 124 125 return *(uint64_t *)(pmem_addr + addr); 126}*/ 127 128 129#endif //__PHYSICAL_MEMORY_HH__ 130