vtophys.cc revision 11435
16019Shines@cs.fsu.edu/* 210037SARM gem5 Developers * Copyright (c) 2010, 2012-2013 ARM Limited 37694SAli.Saidi@ARM.com * All rights reserved 47694SAli.Saidi@ARM.com * 57694SAli.Saidi@ARM.com * The license below extends only to copyright in the software and shall 67694SAli.Saidi@ARM.com * not be construed as granting a license to any other intellectual 77694SAli.Saidi@ARM.com * property including but not limited to intellectual property relating 87694SAli.Saidi@ARM.com * to a hardware implementation of the functionality of the software 97694SAli.Saidi@ARM.com * licensed hereunder. You may use the software subject to the license 107694SAli.Saidi@ARM.com * terms below provided that you ensure that this notice is replicated 117694SAli.Saidi@ARM.com * unmodified and in its entirety in all distributions of the software, 127694SAli.Saidi@ARM.com * modified or unmodified, in source code or in binary form. 137694SAli.Saidi@ARM.com * 146019Shines@cs.fsu.edu * Copyright (c) 2002-2005 The Regents of The University of Michigan 156019Shines@cs.fsu.edu * Copyright (c) 2007-2008 The Florida State University 166019Shines@cs.fsu.edu * All rights reserved. 176019Shines@cs.fsu.edu * 186019Shines@cs.fsu.edu * Redistribution and use in source and binary forms, with or without 196019Shines@cs.fsu.edu * modification, are permitted provided that the following conditions are 206019Shines@cs.fsu.edu * met: redistributions of source code must retain the above copyright 216019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer; 226019Shines@cs.fsu.edu * redistributions in binary form must reproduce the above copyright 236019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer in the 246019Shines@cs.fsu.edu * documentation and/or other materials provided with the distribution; 256019Shines@cs.fsu.edu * neither the name of the copyright holders nor the names of its 266019Shines@cs.fsu.edu * contributors may be used to endorse or promote products derived from 276019Shines@cs.fsu.edu * this software without specific prior written permission. 286019Shines@cs.fsu.edu * 296019Shines@cs.fsu.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 306019Shines@cs.fsu.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 316019Shines@cs.fsu.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 326019Shines@cs.fsu.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 336019Shines@cs.fsu.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 346019Shines@cs.fsu.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 356019Shines@cs.fsu.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 366019Shines@cs.fsu.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 376019Shines@cs.fsu.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 386019Shines@cs.fsu.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 396019Shines@cs.fsu.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 406019Shines@cs.fsu.edu * 416019Shines@cs.fsu.edu * Authors: Ali Saidi 426019Shines@cs.fsu.edu * Nathan Binkert 436019Shines@cs.fsu.edu * Stephen Hines 446019Shines@cs.fsu.edu */ 456019Shines@cs.fsu.edu 466019Shines@cs.fsu.edu#include <string> 476019Shines@cs.fsu.edu 4810037SARM gem5 Developers#include "arch/arm/faults.hh" 497694SAli.Saidi@ARM.com#include "arch/arm/table_walker.hh" 507694SAli.Saidi@ARM.com#include "arch/arm/tlb.hh" 516019Shines@cs.fsu.edu#include "arch/arm/vtophys.hh" 526019Shines@cs.fsu.edu#include "base/chunk_generator.hh" 536019Shines@cs.fsu.edu#include "base/trace.hh" 546019Shines@cs.fsu.edu#include "cpu/thread_context.hh" 558706Sandreas.hansson@arm.com#include "mem/fs_translating_port_proxy.hh" 566019Shines@cs.fsu.edu 576019Shines@cs.fsu.eduusing namespace std; 586019Shines@cs.fsu.eduusing namespace ArmISA; 596019Shines@cs.fsu.edu 606019Shines@cs.fsu.eduAddr 616019Shines@cs.fsu.eduArmISA::vtophys(Addr vaddr) 626019Shines@cs.fsu.edu{ 637694SAli.Saidi@ARM.com fatal("VTOPHYS: Can't convert vaddr to paddr on ARM without a thread context"); 646019Shines@cs.fsu.edu} 656019Shines@cs.fsu.edu 6610707SAndreas.Sandberg@ARM.comstatic std::pair<bool, Addr> 6710707SAndreas.Sandberg@ARM.comtry_translate(ThreadContext *tc, Addr addr) 686019Shines@cs.fsu.edu{ 6910037SARM gem5 Developers Fault fault; 7010037SARM gem5 Developers // Set up a functional memory Request to pass to the TLB 7110037SARM gem5 Developers // to get it to translate the vaddr to a paddr 7211435Smitch.hayenga@arm.com Request req(0, addr, 64, 0x40, -1, 0, 0); 737694SAli.Saidi@ARM.com ArmISA::TLB *tlb; 747694SAli.Saidi@ARM.com 7510037SARM gem5 Developers // Check the TLBs for a translation 7610037SARM gem5 Developers // It's possible that there is a valid translation in the tlb 777694SAli.Saidi@ARM.com // that is no loger valid in the page table in memory 787694SAli.Saidi@ARM.com // so we need to check here first 7910037SARM gem5 Developers // 8010037SARM gem5 Developers // Calling translateFunctional invokes a table-walk if required 8110037SARM gem5 Developers // so we should always succeed 827694SAli.Saidi@ARM.com tlb = static_cast<ArmISA::TLB*>(tc->getDTBPtr()); 8310037SARM gem5 Developers fault = tlb->translateFunctional(&req, tc, BaseTLB::Read, TLB::NormalTran); 8410037SARM gem5 Developers if (fault == NoFault) 8510707SAndreas.Sandberg@ARM.com return std::make_pair(true, req.getPaddr()); 867694SAli.Saidi@ARM.com 877694SAli.Saidi@ARM.com tlb = static_cast<ArmISA::TLB*>(tc->getITBPtr()); 8810037SARM gem5 Developers fault = tlb->translateFunctional(&req, tc, BaseTLB::Read, TLB::NormalTran); 8910037SARM gem5 Developers if (fault == NoFault) 9010707SAndreas.Sandberg@ARM.com return std::make_pair(true, req.getPaddr()); 917694SAli.Saidi@ARM.com 9210707SAndreas.Sandberg@ARM.com return std::make_pair(false, 0); 9310707SAndreas.Sandberg@ARM.com} 9410707SAndreas.Sandberg@ARM.com 9510707SAndreas.Sandberg@ARM.comAddr 9610707SAndreas.Sandberg@ARM.comArmISA::vtophys(ThreadContext *tc, Addr addr) 9710707SAndreas.Sandberg@ARM.com{ 9810707SAndreas.Sandberg@ARM.com const std::pair<bool, Addr> translation(try_translate(tc, addr)); 9910707SAndreas.Sandberg@ARM.com 10010707SAndreas.Sandberg@ARM.com if (translation.first) 10110707SAndreas.Sandberg@ARM.com return translation.second; 10210707SAndreas.Sandberg@ARM.com else 10310707SAndreas.Sandberg@ARM.com panic("Table walkers support functional accesses. We should never get here\n"); 1046019Shines@cs.fsu.edu} 1056019Shines@cs.fsu.edu 1067694SAli.Saidi@ARM.combool 1077694SAli.Saidi@ARM.comArmISA::virtvalid(ThreadContext *tc, Addr vaddr) 1087694SAli.Saidi@ARM.com{ 10910707SAndreas.Sandberg@ARM.com const std::pair<bool, Addr> translation(try_translate(tc, vaddr)); 11010707SAndreas.Sandberg@ARM.com 11110707SAndreas.Sandberg@ARM.com return translation.first; 1127694SAli.Saidi@ARM.com} 1137694SAli.Saidi@ARM.com 1147694SAli.Saidi@ARM.com 115