vtophys.cc revision 12749
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 4611793Sbrandon.potter@amd.com#include "arch/arm/vtophys.hh" 4711793Sbrandon.potter@amd.com 486019Shines@cs.fsu.edu#include <string> 496019Shines@cs.fsu.edu 5010037SARM gem5 Developers#include "arch/arm/faults.hh" 517694SAli.Saidi@ARM.com#include "arch/arm/table_walker.hh" 527694SAli.Saidi@ARM.com#include "arch/arm/tlb.hh" 536019Shines@cs.fsu.edu#include "base/chunk_generator.hh" 546019Shines@cs.fsu.edu#include "base/trace.hh" 556019Shines@cs.fsu.edu#include "cpu/thread_context.hh" 568706Sandreas.hansson@arm.com#include "mem/fs_translating_port_proxy.hh" 576019Shines@cs.fsu.edu 586019Shines@cs.fsu.eduusing namespace std; 596019Shines@cs.fsu.eduusing namespace ArmISA; 606019Shines@cs.fsu.edu 616019Shines@cs.fsu.eduAddr 626019Shines@cs.fsu.eduArmISA::vtophys(Addr vaddr) 636019Shines@cs.fsu.edu{ 647694SAli.Saidi@ARM.com fatal("VTOPHYS: Can't convert vaddr to paddr on ARM without a thread context"); 656019Shines@cs.fsu.edu} 666019Shines@cs.fsu.edu 6710707SAndreas.Sandberg@ARM.comstatic std::pair<bool, Addr> 6810707SAndreas.Sandberg@ARM.comtry_translate(ThreadContext *tc, Addr addr) 696019Shines@cs.fsu.edu{ 7010037SARM gem5 Developers Fault fault; 7110037SARM gem5 Developers // Set up a functional memory Request to pass to the TLB 7210037SARM gem5 Developers // to get it to translate the vaddr to a paddr 7312749Sgiacomo.travaglini@arm.com auto req = std::make_shared<Request>(0, addr, 64, 0x40, -1, 0, 0); 747694SAli.Saidi@ARM.com ArmISA::TLB *tlb; 757694SAli.Saidi@ARM.com 7610037SARM gem5 Developers // Check the TLBs for a translation 7710037SARM gem5 Developers // It's possible that there is a valid translation in the tlb 787694SAli.Saidi@ARM.com // that is no loger valid in the page table in memory 797694SAli.Saidi@ARM.com // so we need to check here first 8010037SARM gem5 Developers // 8110037SARM gem5 Developers // Calling translateFunctional invokes a table-walk if required 8210037SARM gem5 Developers // so we should always succeed 837694SAli.Saidi@ARM.com tlb = static_cast<ArmISA::TLB*>(tc->getDTBPtr()); 8412749Sgiacomo.travaglini@arm.com fault = tlb->translateFunctional(req, tc, BaseTLB::Read, TLB::NormalTran); 8510037SARM gem5 Developers if (fault == NoFault) 8612749Sgiacomo.travaglini@arm.com return std::make_pair(true, req->getPaddr()); 877694SAli.Saidi@ARM.com 887694SAli.Saidi@ARM.com tlb = static_cast<ArmISA::TLB*>(tc->getITBPtr()); 8912749Sgiacomo.travaglini@arm.com fault = tlb->translateFunctional(req, tc, BaseTLB::Read, TLB::NormalTran); 9010037SARM gem5 Developers if (fault == NoFault) 9112749Sgiacomo.travaglini@arm.com return std::make_pair(true, req->getPaddr()); 927694SAli.Saidi@ARM.com 9310707SAndreas.Sandberg@ARM.com return std::make_pair(false, 0); 9410707SAndreas.Sandberg@ARM.com} 9510707SAndreas.Sandberg@ARM.com 9610707SAndreas.Sandberg@ARM.comAddr 9710707SAndreas.Sandberg@ARM.comArmISA::vtophys(ThreadContext *tc, Addr addr) 9810707SAndreas.Sandberg@ARM.com{ 9910707SAndreas.Sandberg@ARM.com const std::pair<bool, Addr> translation(try_translate(tc, addr)); 10010707SAndreas.Sandberg@ARM.com 10110707SAndreas.Sandberg@ARM.com if (translation.first) 10210707SAndreas.Sandberg@ARM.com return translation.second; 10310707SAndreas.Sandberg@ARM.com else 10410707SAndreas.Sandberg@ARM.com panic("Table walkers support functional accesses. We should never get here\n"); 1056019Shines@cs.fsu.edu} 1066019Shines@cs.fsu.edu 1077694SAli.Saidi@ARM.combool 1087694SAli.Saidi@ARM.comArmISA::virtvalid(ThreadContext *tc, Addr vaddr) 1097694SAli.Saidi@ARM.com{ 11010707SAndreas.Sandberg@ARM.com const std::pair<bool, Addr> translation(try_translate(tc, vaddr)); 11110707SAndreas.Sandberg@ARM.com 11210707SAndreas.Sandberg@ARM.com return translation.first; 1137694SAli.Saidi@ARM.com} 1147694SAli.Saidi@ARM.com 1157694SAli.Saidi@ARM.com 116