fs_translating_port_proxy.hh revision 9850:87d6b41749e9
1/* 2 * Copyright (c) 2011 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Copyright (c) 2006 The Regents of The University of Michigan 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution; 24 * neither the name of the copyright holders nor the names of its 25 * contributors may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Ali Saidi 41 * Andreas Hansson 42 */ 43 44/** 45 * @file 46 * TranslatingPortProxy Object Declaration for FS. 47 * 48 * Port proxies are used when non structural entities need access to 49 * the memory system. Proxy objects replace the previous 50 * FunctionalPort, TranslatingPort and VirtualPort objects, which 51 * provided the same functionality as the proxies, but were instances 52 * of ports not corresponding to real structural ports of the 53 * simulated system. Via the port proxies all the accesses go through 54 * an actual port and thus are transparent to a potentially 55 * distributed memory and automatically adhere to the memory map of 56 * the system. 57 */ 58 59#ifndef __MEM_FS_PORT_PROXY_HH__ 60#define __MEM_FS_PORT_PROXY_HH__ 61 62#include "mem/port_proxy.hh" 63 64class ThreadContext; 65 66/** 67 * A TranslatingPortProxy in FS mode translates a virtual address to a 68 * physical address and then calls the read/write functions of the 69 * port. If a thread context is provided the address can alway be 70 * translated, If not it can only be translated if it is a simple 71 * address masking operation (such as alpha super page accesses). 72 */ 73class FSTranslatingPortProxy : public PortProxy 74{ 75 private: 76 ThreadContext* _tc; 77 78 public: 79 80 FSTranslatingPortProxy(ThreadContext* tc); 81 82 FSTranslatingPortProxy(MasterPort &port, unsigned int cacheLineSize); 83 84 virtual ~FSTranslatingPortProxy(); 85 86 /** Version of readblob that translates virt->phys and deals 87 * with page boundries. */ 88 virtual void readBlob(Addr addr, uint8_t *p, int size) const; 89 90 /** Version of writeBlob that translates virt->phys and deals 91 * with page boundries. */ 92 virtual void writeBlob(Addr addr, uint8_t *p, int size) const; 93 94 /** 95 * Fill size bytes starting at addr with byte value val. 96 */ 97 virtual void memsetBlob(Addr address, uint8_t v, int size) const; 98}; 99 100void CopyOut(ThreadContext *tc, void *dest, Addr src, size_t cplen); 101void CopyIn(ThreadContext *tc, Addr dest, void *source, size_t cplen); 102void CopyStringOut(ThreadContext *tc, char *dst, Addr vaddr, size_t maxlen); 103void CopyStringIn(ThreadContext *tc, char *src, Addr vaddr); 104 105#endif //__MEM_FS_PORT_PROXY_HH__ 106