fs_translating_port_proxy.hh revision 14008
12207SN/A/* 22207SN/A * Copyright (c) 2011 ARM Limited 32207SN/A * All rights reserved 42207SN/A * 52207SN/A * The license below extends only to copyright in the software and shall 62207SN/A * not be construed as granting a license to any other intellectual 72207SN/A * property including but not limited to intellectual property relating 82207SN/A * to a hardware implementation of the functionality of the software 92207SN/A * licensed hereunder. You may use the software subject to the license 102207SN/A * terms below provided that you ensure that this notice is replicated 112207SN/A * unmodified and in its entirety in all distributions of the software, 122207SN/A * modified or unmodified, in source code or in binary form. 132207SN/A * 142207SN/A * Copyright (c) 2006 The Regents of The University of Michigan 152207SN/A * All rights reserved. 162207SN/A * 172207SN/A * Redistribution and use in source and binary forms, with or without 182207SN/A * modification, are permitted provided that the following conditions are 192207SN/A * met: redistributions of source code must retain the above copyright 202207SN/A * notice, this list of conditions and the following disclaimer; 212207SN/A * redistributions in binary form must reproduce the above copyright 222207SN/A * notice, this list of conditions and the following disclaimer in the 232207SN/A * documentation and/or other materials provided with the distribution; 242207SN/A * neither the name of the copyright holders nor the names of its 252207SN/A * contributors may be used to endorse or promote products derived from 262207SN/A * this software without specific prior written permission. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 292665Ssaidi@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 302207SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 312207SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 325569Snate@binkert.org * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 335569Snate@binkert.org * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 342207SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 352474SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 362207SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 372454SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 382454SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 392207SN/A * 402474SN/A * Authors: Ali Saidi 412207SN/A * Andreas Hansson 422474SN/A */ 435569Snate@binkert.org 442207SN/A/** 452474SN/A * @file 462474SN/A * TranslatingPortProxy Object Declaration for FS. 472474SN/A * 485569Snate@binkert.org * 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_TRANSLATING_PORT_PROXY_HH__ 60#define __MEM_FS_TRANSLATING_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 ~FSTranslatingPortProxy() {} 85 86 /** Version of tryReadblob that translates virt->phys and deals 87 * with page boundries. */ 88 bool tryReadBlob(Addr addr, uint8_t *p, int size) const override; 89 90 /** Version of tryWriteBlob that translates virt->phys and deals 91 * with page boundries. */ 92 bool tryWriteBlob(Addr addr, const uint8_t *p, int size) const override; 93 94 /** 95 * Fill size bytes starting at addr with byte value val. 96 */ 97 bool tryMemsetBlob(Addr address, uint8_t v, int size) const override; 98}; 99 100void CopyOut(ThreadContext *tc, void *dest, Addr src, size_t cplen); 101void CopyIn(ThreadContext *tc, Addr dest, const void *source, size_t cplen); 102void CopyStringOut(ThreadContext *tc, char *dst, Addr vaddr, size_t maxlen); 103void CopyStringIn(ThreadContext *tc, const char *src, Addr vaddr); 104 105#endif //__MEM_FS_TRANSLATING_PORT_PROXY_HH__ 106