tlb.cc revision 14066
16019Shines@cs.fsu.edu/* 213882Sgiacomo.travaglini@arm.com * Copyright (c) 2010-2013, 2016-2019 ARM Limited 37093Sgblack@eecs.umich.edu * All rights reserved 47093Sgblack@eecs.umich.edu * 57093Sgblack@eecs.umich.edu * The license below extends only to copyright in the software and shall 67093Sgblack@eecs.umich.edu * not be construed as granting a license to any other intellectual 77093Sgblack@eecs.umich.edu * property including but not limited to intellectual property relating 87093Sgblack@eecs.umich.edu * to a hardware implementation of the functionality of the software 97093Sgblack@eecs.umich.edu * licensed hereunder. You may use the software subject to the license 107093Sgblack@eecs.umich.edu * terms below provided that you ensure that this notice is replicated 117093Sgblack@eecs.umich.edu * unmodified and in its entirety in all distributions of the software, 127093Sgblack@eecs.umich.edu * modified or unmodified, in source code or in binary form. 137093Sgblack@eecs.umich.edu * 146019Shines@cs.fsu.edu * Copyright (c) 2001-2005 The Regents of The University of Michigan 156019Shines@cs.fsu.edu * All rights reserved. 166019Shines@cs.fsu.edu * 176019Shines@cs.fsu.edu * Redistribution and use in source and binary forms, with or without 186019Shines@cs.fsu.edu * modification, are permitted provided that the following conditions are 196019Shines@cs.fsu.edu * met: redistributions of source code must retain the above copyright 206019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer; 216019Shines@cs.fsu.edu * redistributions in binary form must reproduce the above copyright 226019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer in the 236019Shines@cs.fsu.edu * documentation and/or other materials provided with the distribution; 246019Shines@cs.fsu.edu * neither the name of the copyright holders nor the names of its 256019Shines@cs.fsu.edu * contributors may be used to endorse or promote products derived from 266019Shines@cs.fsu.edu * this software without specific prior written permission. 276019Shines@cs.fsu.edu * 286019Shines@cs.fsu.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 296019Shines@cs.fsu.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 306019Shines@cs.fsu.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 316019Shines@cs.fsu.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 326019Shines@cs.fsu.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 336019Shines@cs.fsu.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 346019Shines@cs.fsu.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 356019Shines@cs.fsu.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 366019Shines@cs.fsu.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 376019Shines@cs.fsu.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 386019Shines@cs.fsu.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 396019Shines@cs.fsu.edu * 407399SAli.Saidi@ARM.com * Authors: Ali Saidi 417399SAli.Saidi@ARM.com * Nathan Binkert 426019Shines@cs.fsu.edu * Steve Reinhardt 436019Shines@cs.fsu.edu */ 446019Shines@cs.fsu.edu 4510873Sandreas.sandberg@arm.com#include "arch/arm/tlb.hh" 4610873Sandreas.sandberg@arm.com 4710474Sandreas.hansson@arm.com#include <memory> 486019Shines@cs.fsu.edu#include <string> 496019Shines@cs.fsu.edu#include <vector> 506019Shines@cs.fsu.edu 516116Snate@binkert.org#include "arch/arm/faults.hh" 526019Shines@cs.fsu.edu#include "arch/arm/pagetable.hh" 5311793Sbrandon.potter@amd.com#include "arch/arm/stage2_lookup.hh" 5411793Sbrandon.potter@amd.com#include "arch/arm/stage2_mmu.hh" 558782Sgblack@eecs.umich.edu#include "arch/arm/system.hh" 568756Sgblack@eecs.umich.edu#include "arch/arm/table_walker.hh" 576019Shines@cs.fsu.edu#include "arch/arm/utility.hh" 5812005Sandreas.sandberg@arm.com#include "arch/generic/mmapped_ipr.hh" 596019Shines@cs.fsu.edu#include "base/inifile.hh" 606019Shines@cs.fsu.edu#include "base/str.hh" 616019Shines@cs.fsu.edu#include "base/trace.hh" 6210024Sdam.sunwoo@arm.com#include "cpu/base.hh" 636019Shines@cs.fsu.edu#include "cpu/thread_context.hh" 648232Snate@binkert.org#include "debug/Checkpoint.hh" 658232Snate@binkert.org#include "debug/TLB.hh" 668232Snate@binkert.org#include "debug/TLBVerbose.hh" 676116Snate@binkert.org#include "mem/page_table.hh" 6811608Snikos.nikoleris@arm.com#include "mem/request.hh" 696116Snate@binkert.org#include "params/ArmTLB.hh" 708756Sgblack@eecs.umich.edu#include "sim/full_system.hh" 716019Shines@cs.fsu.edu#include "sim/process.hh" 726019Shines@cs.fsu.edu 736019Shines@cs.fsu.eduusing namespace std; 746019Shines@cs.fsu.eduusing namespace ArmISA; 756019Shines@cs.fsu.edu 7610037SARM gem5 DevelopersTLB::TLB(const ArmTLBParams *p) 7710037SARM gem5 Developers : BaseTLB(p), table(new TlbEntry[p->size]), size(p->size), 7813374Sanouk.vanlaer@arm.com isStage2(p->is_stage2), stage2Req(false), stage2DescReq(false), _attr(0), 7910418Sandreas.hansson@arm.com directToStage2(false), tableWalker(p->walker), stage2Tlb(NULL), 8011395Sandreas.sandberg@arm.com stage2Mmu(NULL), test(nullptr), rangeMRU(1), 8110537Sandreas.hansson@arm.com aarch64(false), aarch64EL(EL0), isPriv(false), isSecure(false), 8213453Srekai.gonzalezalberquilla@arm.com isHyp(false), asid(0), vmid(0), hcr(0), dacr(0), 8311152Smitch.hayenga@arm.com miscRegValid(false), miscRegContext(0), curTranType(NormalTran) 846019Shines@cs.fsu.edu{ 8512005Sandreas.sandberg@arm.com const ArmSystem *sys = dynamic_cast<const ArmSystem *>(p->sys); 8612005Sandreas.sandberg@arm.com 8710037SARM gem5 Developers tableWalker->setTlb(this); 887399SAli.Saidi@ARM.com 8910037SARM gem5 Developers // Cache system-level properties 9010037SARM gem5 Developers haveLPAE = tableWalker->haveLPAE(); 9110037SARM gem5 Developers haveVirtualization = tableWalker->haveVirtualization(); 9210037SARM gem5 Developers haveLargeAsid64 = tableWalker->haveLargeAsid64(); 9312005Sandreas.sandberg@arm.com 9412005Sandreas.sandberg@arm.com if (sys) 9512005Sandreas.sandberg@arm.com m5opRange = sys->m5opRange(); 966019Shines@cs.fsu.edu} 976019Shines@cs.fsu.edu 986019Shines@cs.fsu.eduTLB::~TLB() 996019Shines@cs.fsu.edu{ 10010037SARM gem5 Developers delete[] table; 10110037SARM gem5 Developers} 10210037SARM gem5 Developers 10310037SARM gem5 Developersvoid 10410037SARM gem5 DevelopersTLB::init() 10510037SARM gem5 Developers{ 10610037SARM gem5 Developers if (stage2Mmu && !isStage2) 10710037SARM gem5 Developers stage2Tlb = stage2Mmu->stage2Tlb(); 10810037SARM gem5 Developers} 10910037SARM gem5 Developers 11010037SARM gem5 Developersvoid 11110717Sandreas.hansson@arm.comTLB::setMMU(Stage2MMU *m, MasterID master_id) 11210037SARM gem5 Developers{ 11310037SARM gem5 Developers stage2Mmu = m; 11410717Sandreas.hansson@arm.com tableWalker->setMMU(m, master_id); 1156019Shines@cs.fsu.edu} 1166019Shines@cs.fsu.edu 1177694SAli.Saidi@ARM.combool 1187694SAli.Saidi@ARM.comTLB::translateFunctional(ThreadContext *tc, Addr va, Addr &pa) 1197694SAli.Saidi@ARM.com{ 12010037SARM gem5 Developers updateMiscReg(tc); 12110037SARM gem5 Developers 12210037SARM gem5 Developers if (directToStage2) { 12310037SARM gem5 Developers assert(stage2Tlb); 12410037SARM gem5 Developers return stage2Tlb->translateFunctional(tc, va, pa); 12510037SARM gem5 Developers } 12610037SARM gem5 Developers 12710037SARM gem5 Developers TlbEntry *e = lookup(va, asid, vmid, isHyp, isSecure, true, false, 12810037SARM gem5 Developers aarch64 ? aarch64EL : EL1); 1297694SAli.Saidi@ARM.com if (!e) 1307694SAli.Saidi@ARM.com return false; 1317694SAli.Saidi@ARM.com pa = e->pAddr(va); 1327694SAli.Saidi@ARM.com return true; 1337694SAli.Saidi@ARM.com} 1347694SAli.Saidi@ARM.com 1359738Sandreas@sandberg.pp.seFault 13612749Sgiacomo.travaglini@arm.comTLB::finalizePhysical(const RequestPtr &req, 13712749Sgiacomo.travaglini@arm.com ThreadContext *tc, Mode mode) const 1389738Sandreas@sandberg.pp.se{ 13912005Sandreas.sandberg@arm.com const Addr paddr = req->getPaddr(); 14012005Sandreas.sandberg@arm.com 14112005Sandreas.sandberg@arm.com if (m5opRange.contains(paddr)) { 14212005Sandreas.sandberg@arm.com req->setFlags(Request::MMAPPED_IPR | Request::GENERIC_IPR); 14312005Sandreas.sandberg@arm.com req->setPaddr(GenericISA::iprAddressPseudoInst( 14412005Sandreas.sandberg@arm.com (paddr >> 8) & 0xFF, 14512005Sandreas.sandberg@arm.com paddr & 0xFF)); 14612005Sandreas.sandberg@arm.com } 14712005Sandreas.sandberg@arm.com 1489738Sandreas@sandberg.pp.se return NoFault; 1499738Sandreas@sandberg.pp.se} 1509738Sandreas@sandberg.pp.se 1517404SAli.Saidi@ARM.comTlbEntry* 15210037SARM gem5 DevelopersTLB::lookup(Addr va, uint16_t asn, uint8_t vmid, bool hyp, bool secure, 15310037SARM gem5 Developers bool functional, bool ignore_asn, uint8_t target_el) 1546019Shines@cs.fsu.edu{ 1557404SAli.Saidi@ARM.com 1567404SAli.Saidi@ARM.com TlbEntry *retval = NULL; 1577404SAli.Saidi@ARM.com 15810037SARM gem5 Developers // Maintaining LRU array 1597404SAli.Saidi@ARM.com int x = 0; 1607404SAli.Saidi@ARM.com while (retval == NULL && x < size) { 16110037SARM gem5 Developers if ((!ignore_asn && table[x].match(va, asn, vmid, hyp, secure, false, 16210037SARM gem5 Developers target_el)) || 16310037SARM gem5 Developers (ignore_asn && table[x].match(va, vmid, hyp, secure, target_el))) { 16410037SARM gem5 Developers // We only move the hit entry ahead when the position is higher 16510037SARM gem5 Developers // than rangeMRU 1669535Smrinmoy.ghosh@arm.com if (x > rangeMRU && !functional) { 1677697SAli.Saidi@ARM.com TlbEntry tmp_entry = table[x]; 16811321Ssteve.reinhardt@amd.com for (int i = x; i > 0; i--) 16910037SARM gem5 Developers table[i] = table[i - 1]; 1707697SAli.Saidi@ARM.com table[0] = tmp_entry; 1717697SAli.Saidi@ARM.com retval = &table[0]; 1727697SAli.Saidi@ARM.com } else { 1737697SAli.Saidi@ARM.com retval = &table[x]; 1747697SAli.Saidi@ARM.com } 1757404SAli.Saidi@ARM.com break; 1767404SAli.Saidi@ARM.com } 17710037SARM gem5 Developers ++x; 1787404SAli.Saidi@ARM.com } 1797404SAli.Saidi@ARM.com 18010037SARM gem5 Developers DPRINTF(TLBVerbose, "Lookup %#x, asn %#x -> %s vmn 0x%x hyp %d secure %d " 18110037SARM gem5 Developers "ppn %#x size: %#x pa: %#x ap:%d ns:%d nstid:%d g:%d asid: %d " 18210037SARM gem5 Developers "el: %d\n", 18310037SARM gem5 Developers va, asn, retval ? "hit" : "miss", vmid, hyp, secure, 18410037SARM gem5 Developers retval ? retval->pfn : 0, retval ? retval->size : 0, 18510037SARM gem5 Developers retval ? retval->pAddr(va) : 0, retval ? retval->ap : 0, 18610037SARM gem5 Developers retval ? retval->ns : 0, retval ? retval->nstid : 0, 18710037SARM gem5 Developers retval ? retval->global : 0, retval ? retval->asid : 0, 18810367SAndrew.Bardsley@arm.com retval ? retval->el : 0); 18910037SARM gem5 Developers 1907404SAli.Saidi@ARM.com return retval; 1916019Shines@cs.fsu.edu} 1926019Shines@cs.fsu.edu 1936019Shines@cs.fsu.edu// insert a new TLB entry 1946019Shines@cs.fsu.eduvoid 1957404SAli.Saidi@ARM.comTLB::insert(Addr addr, TlbEntry &entry) 1966019Shines@cs.fsu.edu{ 1977404SAli.Saidi@ARM.com DPRINTF(TLB, "Inserting entry into TLB with pfn:%#x size:%#x vpn: %#x" 19810037SARM gem5 Developers " asid:%d vmid:%d N:%d global:%d valid:%d nc:%d xn:%d" 19910037SARM gem5 Developers " ap:%#x domain:%#x ns:%d nstid:%d isHyp:%d\n", entry.pfn, 20010037SARM gem5 Developers entry.size, entry.vpn, entry.asid, entry.vmid, entry.N, 20110037SARM gem5 Developers entry.global, entry.valid, entry.nonCacheable, entry.xn, 20210037SARM gem5 Developers entry.ap, static_cast<uint8_t>(entry.domain), entry.ns, entry.nstid, 20310037SARM gem5 Developers entry.isHyp); 2047404SAli.Saidi@ARM.com 20510037SARM gem5 Developers if (table[size - 1].valid) 20610037SARM gem5 Developers DPRINTF(TLB, " - Replacing Valid entry %#x, asn %d vmn %d ppn %#x " 20710037SARM gem5 Developers "size: %#x ap:%d ns:%d nstid:%d g:%d isHyp:%d el: %d\n", 2087697SAli.Saidi@ARM.com table[size-1].vpn << table[size-1].N, table[size-1].asid, 20910037SARM gem5 Developers table[size-1].vmid, table[size-1].pfn << table[size-1].N, 21010037SARM gem5 Developers table[size-1].size, table[size-1].ap, table[size-1].ns, 21110037SARM gem5 Developers table[size-1].nstid, table[size-1].global, table[size-1].isHyp, 21210037SARM gem5 Developers table[size-1].el); 2137404SAli.Saidi@ARM.com 2147697SAli.Saidi@ARM.com //inserting to MRU position and evicting the LRU one 2157404SAli.Saidi@ARM.com 21610037SARM gem5 Developers for (int i = size - 1; i > 0; --i) 21710037SARM gem5 Developers table[i] = table[i-1]; 2187697SAli.Saidi@ARM.com table[0] = entry; 2197734SAli.Saidi@ARM.com 2207734SAli.Saidi@ARM.com inserts++; 22110463SAndreas.Sandberg@ARM.com ppRefills->notify(1); 2226019Shines@cs.fsu.edu} 2236019Shines@cs.fsu.edu 2246019Shines@cs.fsu.eduvoid 22510037SARM gem5 DevelopersTLB::printTlb() const 2267404SAli.Saidi@ARM.com{ 2277404SAli.Saidi@ARM.com int x = 0; 2287404SAli.Saidi@ARM.com TlbEntry *te; 2297404SAli.Saidi@ARM.com DPRINTF(TLB, "Current TLB contents:\n"); 2307404SAli.Saidi@ARM.com while (x < size) { 23110037SARM gem5 Developers te = &table[x]; 23210037SARM gem5 Developers if (te->valid) 23310037SARM gem5 Developers DPRINTF(TLB, " * %s\n", te->print()); 23410037SARM gem5 Developers ++x; 2357404SAli.Saidi@ARM.com } 2367404SAli.Saidi@ARM.com} 2377404SAli.Saidi@ARM.com 2387404SAli.Saidi@ARM.comvoid 23910037SARM gem5 DevelopersTLB::flushAllSecurity(bool secure_lookup, uint8_t target_el, bool ignore_el) 2406019Shines@cs.fsu.edu{ 24110037SARM gem5 Developers DPRINTF(TLB, "Flushing all TLB entries (%s lookup)\n", 24210037SARM gem5 Developers (secure_lookup ? "secure" : "non-secure")); 2437404SAli.Saidi@ARM.com int x = 0; 2447404SAli.Saidi@ARM.com TlbEntry *te; 2457404SAli.Saidi@ARM.com while (x < size) { 24610037SARM gem5 Developers te = &table[x]; 24710037SARM gem5 Developers if (te->valid && secure_lookup == !te->nstid && 24810037SARM gem5 Developers (te->vmid == vmid || secure_lookup) && 24910037SARM gem5 Developers checkELMatch(target_el, te->el, ignore_el)) { 25010037SARM gem5 Developers 25110037SARM gem5 Developers DPRINTF(TLB, " - %s\n", te->print()); 25210037SARM gem5 Developers te->valid = false; 25310037SARM gem5 Developers flushedEntries++; 25410037SARM gem5 Developers } 25510037SARM gem5 Developers ++x; 2567404SAli.Saidi@ARM.com } 2577404SAli.Saidi@ARM.com 25810037SARM gem5 Developers flushTlb++; 25910037SARM gem5 Developers 26010037SARM gem5 Developers // If there's a second stage TLB (and we're not it) then flush it as well 26110037SARM gem5 Developers // if we're currently in hyp mode 26210037SARM gem5 Developers if (!isStage2 && isHyp) { 26310037SARM gem5 Developers stage2Tlb->flushAllSecurity(secure_lookup, true); 26410037SARM gem5 Developers } 26510037SARM gem5 Developers} 26610037SARM gem5 Developers 26710037SARM gem5 Developersvoid 26813882Sgiacomo.travaglini@arm.comTLB::flushAllNs(uint8_t target_el, bool ignore_el) 26910037SARM gem5 Developers{ 27013882Sgiacomo.travaglini@arm.com bool hyp = target_el == EL2; 27113882Sgiacomo.travaglini@arm.com 27210037SARM gem5 Developers DPRINTF(TLB, "Flushing all NS TLB entries (%s lookup)\n", 27310037SARM gem5 Developers (hyp ? "hyp" : "non-hyp")); 27410037SARM gem5 Developers int x = 0; 27510037SARM gem5 Developers TlbEntry *te; 27610037SARM gem5 Developers while (x < size) { 27710037SARM gem5 Developers te = &table[x]; 27810037SARM gem5 Developers if (te->valid && te->nstid && te->isHyp == hyp && 27910037SARM gem5 Developers checkELMatch(target_el, te->el, ignore_el)) { 28010037SARM gem5 Developers 28110037SARM gem5 Developers DPRINTF(TLB, " - %s\n", te->print()); 28210037SARM gem5 Developers flushedEntries++; 28310037SARM gem5 Developers te->valid = false; 28410037SARM gem5 Developers } 28510037SARM gem5 Developers ++x; 28610037SARM gem5 Developers } 2877734SAli.Saidi@ARM.com 2887734SAli.Saidi@ARM.com flushTlb++; 28910037SARM gem5 Developers 29010037SARM gem5 Developers // If there's a second stage TLB (and we're not it) then flush it as well 29110037SARM gem5 Developers if (!isStage2 && !hyp) { 29210037SARM gem5 Developers stage2Tlb->flushAllNs(false, true); 29310037SARM gem5 Developers } 2946019Shines@cs.fsu.edu} 2956019Shines@cs.fsu.edu 2967404SAli.Saidi@ARM.comvoid 29710037SARM gem5 DevelopersTLB::flushMvaAsid(Addr mva, uint64_t asn, bool secure_lookup, uint8_t target_el) 2987404SAli.Saidi@ARM.com{ 29910037SARM gem5 Developers DPRINTF(TLB, "Flushing TLB entries with mva: %#x, asid: %#x " 30010037SARM gem5 Developers "(%s lookup)\n", mva, asn, (secure_lookup ? 30110037SARM gem5 Developers "secure" : "non-secure")); 30213882Sgiacomo.travaglini@arm.com _flushMva(mva, asn, secure_lookup, false, target_el); 3037734SAli.Saidi@ARM.com flushTlbMvaAsid++; 3047404SAli.Saidi@ARM.com} 3057404SAli.Saidi@ARM.com 3067404SAli.Saidi@ARM.comvoid 30710037SARM gem5 DevelopersTLB::flushAsid(uint64_t asn, bool secure_lookup, uint8_t target_el) 3087404SAli.Saidi@ARM.com{ 30910037SARM gem5 Developers DPRINTF(TLB, "Flushing TLB entries with asid: %#x (%s lookup)\n", asn, 31010037SARM gem5 Developers (secure_lookup ? "secure" : "non-secure")); 3117404SAli.Saidi@ARM.com 31210037SARM gem5 Developers int x = 0 ; 3137404SAli.Saidi@ARM.com TlbEntry *te; 3147404SAli.Saidi@ARM.com 3157404SAli.Saidi@ARM.com while (x < size) { 3167404SAli.Saidi@ARM.com te = &table[x]; 31710037SARM gem5 Developers if (te->valid && te->asid == asn && secure_lookup == !te->nstid && 31810037SARM gem5 Developers (te->vmid == vmid || secure_lookup) && 31910037SARM gem5 Developers checkELMatch(target_el, te->el, false)) { 32010037SARM gem5 Developers 3217404SAli.Saidi@ARM.com te->valid = false; 32210037SARM gem5 Developers DPRINTF(TLB, " - %s\n", te->print()); 3237734SAli.Saidi@ARM.com flushedEntries++; 3247404SAli.Saidi@ARM.com } 32510037SARM gem5 Developers ++x; 3267404SAli.Saidi@ARM.com } 3277734SAli.Saidi@ARM.com flushTlbAsid++; 3287404SAli.Saidi@ARM.com} 3297404SAli.Saidi@ARM.com 3307404SAli.Saidi@ARM.comvoid 33113882Sgiacomo.travaglini@arm.comTLB::flushMva(Addr mva, bool secure_lookup, uint8_t target_el) 3327404SAli.Saidi@ARM.com{ 33310037SARM gem5 Developers DPRINTF(TLB, "Flushing TLB entries with mva: %#x (%s lookup)\n", mva, 33410037SARM gem5 Developers (secure_lookup ? "secure" : "non-secure")); 33513882Sgiacomo.travaglini@arm.com _flushMva(mva, 0xbeef, secure_lookup, true, target_el); 33610037SARM gem5 Developers flushTlbMva++; 33710037SARM gem5 Developers} 3387404SAli.Saidi@ARM.com 33910037SARM gem5 Developersvoid 34013882Sgiacomo.travaglini@arm.comTLB::_flushMva(Addr mva, uint64_t asn, bool secure_lookup, 34110037SARM gem5 Developers bool ignore_asn, uint8_t target_el) 34210037SARM gem5 Developers{ 3437404SAli.Saidi@ARM.com TlbEntry *te; 34410037SARM gem5 Developers // D5.7.2: Sign-extend address to 64 bits 34510037SARM gem5 Developers mva = sext<56>(mva); 34613882Sgiacomo.travaglini@arm.com 34713882Sgiacomo.travaglini@arm.com bool hyp = target_el == EL2; 34813882Sgiacomo.travaglini@arm.com 34910037SARM gem5 Developers te = lookup(mva, asn, vmid, hyp, secure_lookup, false, ignore_asn, 35010037SARM gem5 Developers target_el); 35110037SARM gem5 Developers while (te != NULL) { 35210037SARM gem5 Developers if (secure_lookup == !te->nstid) { 35310037SARM gem5 Developers DPRINTF(TLB, " - %s\n", te->print()); 3547404SAli.Saidi@ARM.com te->valid = false; 3557734SAli.Saidi@ARM.com flushedEntries++; 3567404SAli.Saidi@ARM.com } 35710037SARM gem5 Developers te = lookup(mva, asn, vmid, hyp, secure_lookup, false, ignore_asn, 35810037SARM gem5 Developers target_el); 3597404SAli.Saidi@ARM.com } 36010037SARM gem5 Developers} 36110037SARM gem5 Developers 36211584SDylan.Johnson@ARM.comvoid 36313882Sgiacomo.travaglini@arm.comTLB::flushIpaVmid(Addr ipa, bool secure_lookup, uint8_t target_el) 36411584SDylan.Johnson@ARM.com{ 36511584SDylan.Johnson@ARM.com assert(!isStage2); 36613882Sgiacomo.travaglini@arm.com stage2Tlb->_flushMva(ipa, 0xbeef, secure_lookup, true, target_el); 36711584SDylan.Johnson@ARM.com} 36811584SDylan.Johnson@ARM.com 36910037SARM gem5 Developersbool 37010037SARM gem5 DevelopersTLB::checkELMatch(uint8_t target_el, uint8_t tentry_el, bool ignore_el) 37110037SARM gem5 Developers{ 37210037SARM gem5 Developers bool elMatch = true; 37310037SARM gem5 Developers if (!ignore_el) { 37410037SARM gem5 Developers if (target_el == 2 || target_el == 3) { 37510037SARM gem5 Developers elMatch = (tentry_el == target_el); 37610037SARM gem5 Developers } else { 37710037SARM gem5 Developers elMatch = (tentry_el == 0) || (tentry_el == 1); 37810037SARM gem5 Developers } 37910037SARM gem5 Developers } 38010037SARM gem5 Developers return elMatch; 3817404SAli.Saidi@ARM.com} 3827404SAli.Saidi@ARM.com 3836019Shines@cs.fsu.eduvoid 3849439SAndreas.Sandberg@ARM.comTLB::drainResume() 3859439SAndreas.Sandberg@ARM.com{ 3869439SAndreas.Sandberg@ARM.com // We might have unserialized something or switched CPUs, so make 3879439SAndreas.Sandberg@ARM.com // sure to re-read the misc regs. 3889439SAndreas.Sandberg@ARM.com miscRegValid = false; 3899439SAndreas.Sandberg@ARM.com} 3909439SAndreas.Sandberg@ARM.com 3919439SAndreas.Sandberg@ARM.comvoid 39210194SGeoffrey.Blake@arm.comTLB::takeOverFrom(BaseTLB *_otlb) 39310194SGeoffrey.Blake@arm.com{ 39410194SGeoffrey.Blake@arm.com TLB *otlb = dynamic_cast<TLB*>(_otlb); 39510194SGeoffrey.Blake@arm.com /* Make sure we actually have a valid type */ 39610194SGeoffrey.Blake@arm.com if (otlb) { 39710194SGeoffrey.Blake@arm.com _attr = otlb->_attr; 39810194SGeoffrey.Blake@arm.com haveLPAE = otlb->haveLPAE; 39910194SGeoffrey.Blake@arm.com directToStage2 = otlb->directToStage2; 40010194SGeoffrey.Blake@arm.com stage2Req = otlb->stage2Req; 40113374Sanouk.vanlaer@arm.com stage2DescReq = otlb->stage2DescReq; 40210194SGeoffrey.Blake@arm.com 40310194SGeoffrey.Blake@arm.com /* Sync the stage2 MMU if they exist in both 40410194SGeoffrey.Blake@arm.com * the old CPU and the new 40510194SGeoffrey.Blake@arm.com */ 40610194SGeoffrey.Blake@arm.com if (!isStage2 && 40710194SGeoffrey.Blake@arm.com stage2Tlb && otlb->stage2Tlb) { 40810194SGeoffrey.Blake@arm.com stage2Tlb->takeOverFrom(otlb->stage2Tlb); 40910194SGeoffrey.Blake@arm.com } 41010194SGeoffrey.Blake@arm.com } else { 41110194SGeoffrey.Blake@arm.com panic("Incompatible TLB type!"); 41210194SGeoffrey.Blake@arm.com } 41310194SGeoffrey.Blake@arm.com} 41410194SGeoffrey.Blake@arm.com 41510194SGeoffrey.Blake@arm.comvoid 41610905Sandreas.sandberg@arm.comTLB::serialize(CheckpointOut &cp) const 4176019Shines@cs.fsu.edu{ 4187733SAli.Saidi@ARM.com DPRINTF(Checkpoint, "Serializing Arm TLB\n"); 4197733SAli.Saidi@ARM.com 4207733SAli.Saidi@ARM.com SERIALIZE_SCALAR(_attr); 42110037SARM gem5 Developers SERIALIZE_SCALAR(haveLPAE); 42210037SARM gem5 Developers SERIALIZE_SCALAR(directToStage2); 42310037SARM gem5 Developers SERIALIZE_SCALAR(stage2Req); 42413374Sanouk.vanlaer@arm.com SERIALIZE_SCALAR(stage2DescReq); 4258353SAli.Saidi@ARM.com 4268353SAli.Saidi@ARM.com int num_entries = size; 4278353SAli.Saidi@ARM.com SERIALIZE_SCALAR(num_entries); 42811321Ssteve.reinhardt@amd.com for (int i = 0; i < size; i++) 42910905Sandreas.sandberg@arm.com table[i].serializeSection(cp, csprintf("TlbEntry%d", i)); 4306019Shines@cs.fsu.edu} 4316019Shines@cs.fsu.edu 4326019Shines@cs.fsu.eduvoid 43310905Sandreas.sandberg@arm.comTLB::unserialize(CheckpointIn &cp) 4346019Shines@cs.fsu.edu{ 4357733SAli.Saidi@ARM.com DPRINTF(Checkpoint, "Unserializing Arm TLB\n"); 4366019Shines@cs.fsu.edu 4377733SAli.Saidi@ARM.com UNSERIALIZE_SCALAR(_attr); 43810037SARM gem5 Developers UNSERIALIZE_SCALAR(haveLPAE); 43910037SARM gem5 Developers UNSERIALIZE_SCALAR(directToStage2); 44010037SARM gem5 Developers UNSERIALIZE_SCALAR(stage2Req); 44113374Sanouk.vanlaer@arm.com UNSERIALIZE_SCALAR(stage2DescReq); 44210037SARM gem5 Developers 4438353SAli.Saidi@ARM.com int num_entries; 4448353SAli.Saidi@ARM.com UNSERIALIZE_SCALAR(num_entries); 44511321Ssteve.reinhardt@amd.com for (int i = 0; i < min(size, num_entries); i++) 44610905Sandreas.sandberg@arm.com table[i].unserializeSection(cp, csprintf("TlbEntry%d", i)); 4476019Shines@cs.fsu.edu} 4486019Shines@cs.fsu.edu 4496019Shines@cs.fsu.eduvoid 4506019Shines@cs.fsu.eduTLB::regStats() 4516019Shines@cs.fsu.edu{ 45211522Sstephan.diestelhorst@arm.com BaseTLB::regStats(); 4537734SAli.Saidi@ARM.com instHits 4547734SAli.Saidi@ARM.com .name(name() + ".inst_hits") 4557734SAli.Saidi@ARM.com .desc("ITB inst hits") 4567734SAli.Saidi@ARM.com ; 4577734SAli.Saidi@ARM.com 4587734SAli.Saidi@ARM.com instMisses 4597734SAli.Saidi@ARM.com .name(name() + ".inst_misses") 4607734SAli.Saidi@ARM.com .desc("ITB inst misses") 4617734SAli.Saidi@ARM.com ; 4627734SAli.Saidi@ARM.com 4637734SAli.Saidi@ARM.com instAccesses 4647734SAli.Saidi@ARM.com .name(name() + ".inst_accesses") 4657734SAli.Saidi@ARM.com .desc("ITB inst accesses") 4667734SAli.Saidi@ARM.com ; 4677734SAli.Saidi@ARM.com 4687734SAli.Saidi@ARM.com readHits 4696019Shines@cs.fsu.edu .name(name() + ".read_hits") 4706019Shines@cs.fsu.edu .desc("DTB read hits") 4716019Shines@cs.fsu.edu ; 4726019Shines@cs.fsu.edu 4737734SAli.Saidi@ARM.com readMisses 4746019Shines@cs.fsu.edu .name(name() + ".read_misses") 4756019Shines@cs.fsu.edu .desc("DTB read misses") 4766019Shines@cs.fsu.edu ; 4776019Shines@cs.fsu.edu 4787734SAli.Saidi@ARM.com readAccesses 4796019Shines@cs.fsu.edu .name(name() + ".read_accesses") 4806019Shines@cs.fsu.edu .desc("DTB read accesses") 4816019Shines@cs.fsu.edu ; 4826019Shines@cs.fsu.edu 4837734SAli.Saidi@ARM.com writeHits 4846019Shines@cs.fsu.edu .name(name() + ".write_hits") 4856019Shines@cs.fsu.edu .desc("DTB write hits") 4866019Shines@cs.fsu.edu ; 4876019Shines@cs.fsu.edu 4887734SAli.Saidi@ARM.com writeMisses 4896019Shines@cs.fsu.edu .name(name() + ".write_misses") 4906019Shines@cs.fsu.edu .desc("DTB write misses") 4916019Shines@cs.fsu.edu ; 4926019Shines@cs.fsu.edu 4937734SAli.Saidi@ARM.com writeAccesses 4946019Shines@cs.fsu.edu .name(name() + ".write_accesses") 4956019Shines@cs.fsu.edu .desc("DTB write accesses") 4966019Shines@cs.fsu.edu ; 4976019Shines@cs.fsu.edu 4986019Shines@cs.fsu.edu hits 4996019Shines@cs.fsu.edu .name(name() + ".hits") 5006019Shines@cs.fsu.edu .desc("DTB hits") 5016019Shines@cs.fsu.edu ; 5026019Shines@cs.fsu.edu 5036019Shines@cs.fsu.edu misses 5046019Shines@cs.fsu.edu .name(name() + ".misses") 5056019Shines@cs.fsu.edu .desc("DTB misses") 5066019Shines@cs.fsu.edu ; 5076019Shines@cs.fsu.edu 5086019Shines@cs.fsu.edu accesses 5096019Shines@cs.fsu.edu .name(name() + ".accesses") 5106019Shines@cs.fsu.edu .desc("DTB accesses") 5116019Shines@cs.fsu.edu ; 5126019Shines@cs.fsu.edu 5137734SAli.Saidi@ARM.com flushTlb 5147734SAli.Saidi@ARM.com .name(name() + ".flush_tlb") 5157734SAli.Saidi@ARM.com .desc("Number of times complete TLB was flushed") 5167734SAli.Saidi@ARM.com ; 5177734SAli.Saidi@ARM.com 5187734SAli.Saidi@ARM.com flushTlbMva 5197734SAli.Saidi@ARM.com .name(name() + ".flush_tlb_mva") 5207734SAli.Saidi@ARM.com .desc("Number of times TLB was flushed by MVA") 5217734SAli.Saidi@ARM.com ; 5227734SAli.Saidi@ARM.com 5237734SAli.Saidi@ARM.com flushTlbMvaAsid 5247734SAli.Saidi@ARM.com .name(name() + ".flush_tlb_mva_asid") 5257734SAli.Saidi@ARM.com .desc("Number of times TLB was flushed by MVA & ASID") 5267734SAli.Saidi@ARM.com ; 5277734SAli.Saidi@ARM.com 5287734SAli.Saidi@ARM.com flushTlbAsid 5297734SAli.Saidi@ARM.com .name(name() + ".flush_tlb_asid") 5307734SAli.Saidi@ARM.com .desc("Number of times TLB was flushed by ASID") 5317734SAli.Saidi@ARM.com ; 5327734SAli.Saidi@ARM.com 5337734SAli.Saidi@ARM.com flushedEntries 5347734SAli.Saidi@ARM.com .name(name() + ".flush_entries") 5357734SAli.Saidi@ARM.com .desc("Number of entries that have been flushed from TLB") 5367734SAli.Saidi@ARM.com ; 5377734SAli.Saidi@ARM.com 5387734SAli.Saidi@ARM.com alignFaults 5397734SAli.Saidi@ARM.com .name(name() + ".align_faults") 5407734SAli.Saidi@ARM.com .desc("Number of TLB faults due to alignment restrictions") 5417734SAli.Saidi@ARM.com ; 5427734SAli.Saidi@ARM.com 5437734SAli.Saidi@ARM.com prefetchFaults 5447734SAli.Saidi@ARM.com .name(name() + ".prefetch_faults") 5457734SAli.Saidi@ARM.com .desc("Number of TLB faults due to prefetch") 5467734SAli.Saidi@ARM.com ; 5477734SAli.Saidi@ARM.com 5487734SAli.Saidi@ARM.com domainFaults 5497734SAli.Saidi@ARM.com .name(name() + ".domain_faults") 5507734SAli.Saidi@ARM.com .desc("Number of TLB faults due to domain restrictions") 5517734SAli.Saidi@ARM.com ; 5527734SAli.Saidi@ARM.com 5537734SAli.Saidi@ARM.com permsFaults 5547734SAli.Saidi@ARM.com .name(name() + ".perms_faults") 5557734SAli.Saidi@ARM.com .desc("Number of TLB faults due to permissions restrictions") 5567734SAli.Saidi@ARM.com ; 5577734SAli.Saidi@ARM.com 5587734SAli.Saidi@ARM.com instAccesses = instHits + instMisses; 5597734SAli.Saidi@ARM.com readAccesses = readHits + readMisses; 5607734SAli.Saidi@ARM.com writeAccesses = writeHits + writeMisses; 5617734SAli.Saidi@ARM.com hits = readHits + writeHits + instHits; 5627734SAli.Saidi@ARM.com misses = readMisses + writeMisses + instMisses; 5637734SAli.Saidi@ARM.com accesses = readAccesses + writeAccesses + instAccesses; 5646019Shines@cs.fsu.edu} 5656019Shines@cs.fsu.edu 56610463SAndreas.Sandberg@ARM.comvoid 56710463SAndreas.Sandberg@ARM.comTLB::regProbePoints() 56810463SAndreas.Sandberg@ARM.com{ 56910463SAndreas.Sandberg@ARM.com ppRefills.reset(new ProbePoints::PMU(getProbeManager(), "Refills")); 57010463SAndreas.Sandberg@ARM.com} 57110463SAndreas.Sandberg@ARM.com 5727404SAli.Saidi@ARM.comFault 57312749Sgiacomo.travaglini@arm.comTLB::translateSe(const RequestPtr &req, ThreadContext *tc, Mode mode, 57410037SARM gem5 Developers Translation *translation, bool &delay, bool timing) 5757404SAli.Saidi@ARM.com{ 57610037SARM gem5 Developers updateMiscReg(tc); 57710037SARM gem5 Developers Addr vaddr_tainted = req->getVaddr(); 57810037SARM gem5 Developers Addr vaddr = 0; 57910037SARM gem5 Developers if (aarch64) 58010854SNathanael.Premillieu@arm.com vaddr = purifyTaggedAddr(vaddr_tainted, tc, aarch64EL, ttbcr); 58110037SARM gem5 Developers else 58210037SARM gem5 Developers vaddr = vaddr_tainted; 58311608Snikos.nikoleris@arm.com Request::Flags flags = req->getFlags(); 5847294Sgblack@eecs.umich.edu 5857404SAli.Saidi@ARM.com bool is_fetch = (mode == Execute); 5867404SAli.Saidi@ARM.com bool is_write = (mode == Write); 5877404SAli.Saidi@ARM.com 5887404SAli.Saidi@ARM.com if (!is_fetch) { 58913968Sjavier.bueno@metempsy.com assert(flags & MustBeOne || req->isPrefetch()); 5907404SAli.Saidi@ARM.com if (sctlr.a || !(flags & AllowUnaligned)) { 59110037SARM gem5 Developers if (vaddr & mask(flags & AlignmentMask)) { 59210037SARM gem5 Developers // LPAE is always disabled in SE mode 59310474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 59410474Sandreas.hansson@arm.com vaddr_tainted, 59510474Sandreas.hansson@arm.com TlbEntry::DomainType::NoAccess, is_write, 59610474Sandreas.hansson@arm.com ArmFault::AlignmentFault, isStage2, 59710474Sandreas.hansson@arm.com ArmFault::VmsaTran); 5987294Sgblack@eecs.umich.edu } 5997294Sgblack@eecs.umich.edu } 6007294Sgblack@eecs.umich.edu } 6016019Shines@cs.fsu.edu 6027093Sgblack@eecs.umich.edu Addr paddr; 6037404SAli.Saidi@ARM.com Process *p = tc->getProcessPtr(); 6047404SAli.Saidi@ARM.com 6057093Sgblack@eecs.umich.edu if (!p->pTable->translate(vaddr, paddr)) 60610474Sandreas.hansson@arm.com return std::make_shared<GenericPageTableFault>(vaddr_tainted); 6077093Sgblack@eecs.umich.edu req->setPaddr(paddr); 6086019Shines@cs.fsu.edu 60912005Sandreas.sandberg@arm.com return finalizePhysical(req, tc, mode); 6107404SAli.Saidi@ARM.com} 6117404SAli.Saidi@ARM.com 6127404SAli.Saidi@ARM.comFault 61312749Sgiacomo.travaglini@arm.comTLB::checkPermissions(TlbEntry *te, const RequestPtr &req, Mode mode) 61410037SARM gem5 Developers{ 61512506Snikos.nikoleris@arm.com // a data cache maintenance instruction that operates by MVA does 61612506Snikos.nikoleris@arm.com // not generate a Data Abort exeception due to a Permission fault 61712506Snikos.nikoleris@arm.com if (req->isCacheMaintenance()) { 61812506Snikos.nikoleris@arm.com return NoFault; 61912506Snikos.nikoleris@arm.com } 62012506Snikos.nikoleris@arm.com 62110037SARM gem5 Developers Addr vaddr = req->getVaddr(); // 32-bit don't have to purify 62211608Snikos.nikoleris@arm.com Request::Flags flags = req->getFlags(); 62310037SARM gem5 Developers bool is_fetch = (mode == Execute); 62410037SARM gem5 Developers bool is_write = (mode == Write); 62510037SARM gem5 Developers bool is_priv = isPriv && !(flags & UserMode); 62610037SARM gem5 Developers 62710037SARM gem5 Developers // Get the translation type from the actuall table entry 62810037SARM gem5 Developers ArmFault::TranMethod tranMethod = te->longDescFormat ? ArmFault::LpaeTran 62910037SARM gem5 Developers : ArmFault::VmsaTran; 63010037SARM gem5 Developers 63110037SARM gem5 Developers // If this is the second stage of translation and the request is for a 63210037SARM gem5 Developers // stage 1 page table walk then we need to check the HCR.PTW bit. This 63310037SARM gem5 Developers // allows us to generate a fault if the request targets an area marked 63410037SARM gem5 Developers // as a device or strongly ordered. 63510037SARM gem5 Developers if (isStage2 && req->isPTWalk() && hcr.ptw && 63610037SARM gem5 Developers (te->mtype != TlbEntry::MemoryType::Normal)) { 63710474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 63810474Sandreas.hansson@arm.com vaddr, te->domain, is_write, 63910474Sandreas.hansson@arm.com ArmFault::PermissionLL + te->lookupLevel, 64010474Sandreas.hansson@arm.com isStage2, tranMethod); 64110037SARM gem5 Developers } 64210037SARM gem5 Developers 64310037SARM gem5 Developers // Generate an alignment fault for unaligned data accesses to device or 64410037SARM gem5 Developers // strongly ordered memory 64510037SARM gem5 Developers if (!is_fetch) { 64610037SARM gem5 Developers if (te->mtype != TlbEntry::MemoryType::Normal) { 64710037SARM gem5 Developers if (vaddr & mask(flags & AlignmentMask)) { 64810037SARM gem5 Developers alignFaults++; 64910474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 65010474Sandreas.hansson@arm.com vaddr, TlbEntry::DomainType::NoAccess, is_write, 65110474Sandreas.hansson@arm.com ArmFault::AlignmentFault, isStage2, 65210474Sandreas.hansson@arm.com tranMethod); 65310037SARM gem5 Developers } 65410037SARM gem5 Developers } 65510037SARM gem5 Developers } 65610037SARM gem5 Developers 65710037SARM gem5 Developers if (te->nonCacheable) { 65810037SARM gem5 Developers // Prevent prefetching from I/O devices. 65910037SARM gem5 Developers if (req->isPrefetch()) { 66010037SARM gem5 Developers // Here we can safely use the fault status for the short 66110037SARM gem5 Developers // desc. format in all cases 66210474Sandreas.hansson@arm.com return std::make_shared<PrefetchAbort>( 66310474Sandreas.hansson@arm.com vaddr, ArmFault::PrefetchUncacheable, 66410474Sandreas.hansson@arm.com isStage2, tranMethod); 66510037SARM gem5 Developers } 66610037SARM gem5 Developers } 66710037SARM gem5 Developers 66810037SARM gem5 Developers if (!te->longDescFormat) { 66910037SARM gem5 Developers switch ((dacr >> (static_cast<uint8_t>(te->domain) * 2)) & 0x3) { 67010037SARM gem5 Developers case 0: 67110037SARM gem5 Developers domainFaults++; 67210037SARM gem5 Developers DPRINTF(TLB, "TLB Fault: Data abort on domain. DACR: %#x" 67310037SARM gem5 Developers " domain: %#x write:%d\n", dacr, 67410037SARM gem5 Developers static_cast<uint8_t>(te->domain), is_write); 67511861Snikos.nikoleris@arm.com if (is_fetch) { 67611861Snikos.nikoleris@arm.com // Use PC value instead of vaddr because vaddr might 67711861Snikos.nikoleris@arm.com // be aligned to cache line and should not be the 67811861Snikos.nikoleris@arm.com // address reported in FAR 67910474Sandreas.hansson@arm.com return std::make_shared<PrefetchAbort>( 68011861Snikos.nikoleris@arm.com req->getPC(), 68110474Sandreas.hansson@arm.com ArmFault::DomainLL + te->lookupLevel, 68210474Sandreas.hansson@arm.com isStage2, tranMethod); 68311861Snikos.nikoleris@arm.com } else 68410474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 68510474Sandreas.hansson@arm.com vaddr, te->domain, is_write, 68610474Sandreas.hansson@arm.com ArmFault::DomainLL + te->lookupLevel, 68710474Sandreas.hansson@arm.com isStage2, tranMethod); 68810037SARM gem5 Developers case 1: 68910037SARM gem5 Developers // Continue with permissions check 69010037SARM gem5 Developers break; 69110037SARM gem5 Developers case 2: 69210037SARM gem5 Developers panic("UNPRED domain\n"); 69310037SARM gem5 Developers case 3: 69410037SARM gem5 Developers return NoFault; 69510037SARM gem5 Developers } 69610037SARM gem5 Developers } 69710037SARM gem5 Developers 69810037SARM gem5 Developers // The 'ap' variable is AP[2:0] or {AP[2,1],1b'0}, i.e. always three bits 69910037SARM gem5 Developers uint8_t ap = te->longDescFormat ? te->ap << 1 : te->ap; 70010037SARM gem5 Developers uint8_t hap = te->hap; 70110037SARM gem5 Developers 70210037SARM gem5 Developers if (sctlr.afe == 1 || te->longDescFormat) 70310037SARM gem5 Developers ap |= 1; 70410037SARM gem5 Developers 70510037SARM gem5 Developers bool abt; 70610037SARM gem5 Developers bool isWritable = true; 70710037SARM gem5 Developers // If this is a stage 2 access (eg for reading stage 1 page table entries) 70810037SARM gem5 Developers // then don't perform the AP permissions check, we stil do the HAP check 70910037SARM gem5 Developers // below. 71010037SARM gem5 Developers if (isStage2) { 71110037SARM gem5 Developers abt = false; 71210037SARM gem5 Developers } else { 71310037SARM gem5 Developers switch (ap) { 71410037SARM gem5 Developers case 0: 71510037SARM gem5 Developers DPRINTF(TLB, "Access permissions 0, checking rs:%#x\n", 71610037SARM gem5 Developers (int)sctlr.rs); 71710037SARM gem5 Developers if (!sctlr.xp) { 71810037SARM gem5 Developers switch ((int)sctlr.rs) { 71910037SARM gem5 Developers case 2: 72010037SARM gem5 Developers abt = is_write; 72110037SARM gem5 Developers break; 72210037SARM gem5 Developers case 1: 72310037SARM gem5 Developers abt = is_write || !is_priv; 72410037SARM gem5 Developers break; 72510037SARM gem5 Developers case 0: 72610037SARM gem5 Developers case 3: 72710037SARM gem5 Developers default: 72810037SARM gem5 Developers abt = true; 72910037SARM gem5 Developers break; 73010037SARM gem5 Developers } 73110037SARM gem5 Developers } else { 73210037SARM gem5 Developers abt = true; 73310037SARM gem5 Developers } 73410037SARM gem5 Developers break; 73510037SARM gem5 Developers case 1: 73610037SARM gem5 Developers abt = !is_priv; 73710037SARM gem5 Developers break; 73810037SARM gem5 Developers case 2: 73910037SARM gem5 Developers abt = !is_priv && is_write; 74010037SARM gem5 Developers isWritable = is_priv; 74110037SARM gem5 Developers break; 74210037SARM gem5 Developers case 3: 74310037SARM gem5 Developers abt = false; 74410037SARM gem5 Developers break; 74510037SARM gem5 Developers case 4: 74610037SARM gem5 Developers panic("UNPRED premissions\n"); 74710037SARM gem5 Developers case 5: 74810037SARM gem5 Developers abt = !is_priv || is_write; 74910037SARM gem5 Developers isWritable = false; 75010037SARM gem5 Developers break; 75110037SARM gem5 Developers case 6: 75210037SARM gem5 Developers case 7: 75310037SARM gem5 Developers abt = is_write; 75410037SARM gem5 Developers isWritable = false; 75510037SARM gem5 Developers break; 75610037SARM gem5 Developers default: 75710037SARM gem5 Developers panic("Unknown permissions %#x\n", ap); 75810037SARM gem5 Developers } 75910037SARM gem5 Developers } 76010037SARM gem5 Developers 76110037SARM gem5 Developers bool hapAbt = is_write ? !(hap & 2) : !(hap & 1); 76210037SARM gem5 Developers bool xn = te->xn || (isWritable && sctlr.wxn) || 76310037SARM gem5 Developers (ap == 3 && sctlr.uwxn && is_priv); 76410037SARM gem5 Developers if (is_fetch && (abt || xn || 76511495Sandreas.sandberg@arm.com (te->longDescFormat && te->pxn && is_priv) || 76610037SARM gem5 Developers (isSecure && te->ns && scr.sif))) { 76710037SARM gem5 Developers permsFaults++; 76810037SARM gem5 Developers DPRINTF(TLB, "TLB Fault: Prefetch abort on permission check. AP:%d " 76910037SARM gem5 Developers "priv:%d write:%d ns:%d sif:%d sctlr.afe: %d \n", 77010037SARM gem5 Developers ap, is_priv, is_write, te->ns, scr.sif,sctlr.afe); 77111861Snikos.nikoleris@arm.com // Use PC value instead of vaddr because vaddr might be aligned to 77211861Snikos.nikoleris@arm.com // cache line and should not be the address reported in FAR 77310474Sandreas.hansson@arm.com return std::make_shared<PrefetchAbort>( 77411861Snikos.nikoleris@arm.com req->getPC(), 77510474Sandreas.hansson@arm.com ArmFault::PermissionLL + te->lookupLevel, 77610474Sandreas.hansson@arm.com isStage2, tranMethod); 77710037SARM gem5 Developers } else if (abt | hapAbt) { 77810037SARM gem5 Developers permsFaults++; 77910037SARM gem5 Developers DPRINTF(TLB, "TLB Fault: Data abort on permission check. AP:%d priv:%d" 78010037SARM gem5 Developers " write:%d\n", ap, is_priv, is_write); 78110474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 78210474Sandreas.hansson@arm.com vaddr, te->domain, is_write, 78310474Sandreas.hansson@arm.com ArmFault::PermissionLL + te->lookupLevel, 78410474Sandreas.hansson@arm.com isStage2 | !abt, tranMethod); 78510037SARM gem5 Developers } 78610037SARM gem5 Developers return NoFault; 78710037SARM gem5 Developers} 78810037SARM gem5 Developers 78910037SARM gem5 Developers 79010037SARM gem5 DevelopersFault 79112749Sgiacomo.travaglini@arm.comTLB::checkPermissions64(TlbEntry *te, const RequestPtr &req, Mode mode, 79210037SARM gem5 Developers ThreadContext *tc) 79310037SARM gem5 Developers{ 79410037SARM gem5 Developers assert(aarch64); 79510037SARM gem5 Developers 79612506Snikos.nikoleris@arm.com // A data cache maintenance instruction that operates by VA does 79712506Snikos.nikoleris@arm.com // not generate a Permission fault unless: 79812506Snikos.nikoleris@arm.com // * It is a data cache invalidate (dc ivac) which requires write 79912506Snikos.nikoleris@arm.com // permissions to the VA, or 80012506Snikos.nikoleris@arm.com // * It is executed from EL0 80112506Snikos.nikoleris@arm.com if (req->isCacheClean() && aarch64EL != EL0 && !isStage2) { 80212506Snikos.nikoleris@arm.com return NoFault; 80312506Snikos.nikoleris@arm.com } 80412506Snikos.nikoleris@arm.com 80510037SARM gem5 Developers Addr vaddr_tainted = req->getVaddr(); 80610854SNathanael.Premillieu@arm.com Addr vaddr = purifyTaggedAddr(vaddr_tainted, tc, aarch64EL, ttbcr); 80710037SARM gem5 Developers 80811608Snikos.nikoleris@arm.com Request::Flags flags = req->getFlags(); 80910037SARM gem5 Developers bool is_fetch = (mode == Execute); 81012506Snikos.nikoleris@arm.com // Cache clean operations require read permissions to the specified VA 81112506Snikos.nikoleris@arm.com bool is_write = !req->isCacheClean() && mode == Write; 81210037SARM gem5 Developers bool is_priv M5_VAR_USED = isPriv && !(flags & UserMode); 81310037SARM gem5 Developers 81410037SARM gem5 Developers updateMiscReg(tc, curTranType); 81510037SARM gem5 Developers 81610037SARM gem5 Developers // If this is the second stage of translation and the request is for a 81710037SARM gem5 Developers // stage 1 page table walk then we need to check the HCR.PTW bit. This 81810037SARM gem5 Developers // allows us to generate a fault if the request targets an area marked 81910037SARM gem5 Developers // as a device or strongly ordered. 82010037SARM gem5 Developers if (isStage2 && req->isPTWalk() && hcr.ptw && 82110037SARM gem5 Developers (te->mtype != TlbEntry::MemoryType::Normal)) { 82210474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 82310474Sandreas.hansson@arm.com vaddr_tainted, te->domain, is_write, 82410474Sandreas.hansson@arm.com ArmFault::PermissionLL + te->lookupLevel, 82510474Sandreas.hansson@arm.com isStage2, ArmFault::LpaeTran); 82610037SARM gem5 Developers } 82710037SARM gem5 Developers 82810037SARM gem5 Developers // Generate an alignment fault for unaligned accesses to device or 82910037SARM gem5 Developers // strongly ordered memory 83010037SARM gem5 Developers if (!is_fetch) { 83110037SARM gem5 Developers if (te->mtype != TlbEntry::MemoryType::Normal) { 83210037SARM gem5 Developers if (vaddr & mask(flags & AlignmentMask)) { 83310037SARM gem5 Developers alignFaults++; 83410474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 83510474Sandreas.hansson@arm.com vaddr_tainted, 83610474Sandreas.hansson@arm.com TlbEntry::DomainType::NoAccess, is_write, 83710474Sandreas.hansson@arm.com ArmFault::AlignmentFault, isStage2, 83810474Sandreas.hansson@arm.com ArmFault::LpaeTran); 83910037SARM gem5 Developers } 84010037SARM gem5 Developers } 84110037SARM gem5 Developers } 84210037SARM gem5 Developers 84310037SARM gem5 Developers if (te->nonCacheable) { 84410037SARM gem5 Developers // Prevent prefetching from I/O devices. 84510037SARM gem5 Developers if (req->isPrefetch()) { 84610037SARM gem5 Developers // Here we can safely use the fault status for the short 84710037SARM gem5 Developers // desc. format in all cases 84810474Sandreas.hansson@arm.com return std::make_shared<PrefetchAbort>( 84910474Sandreas.hansson@arm.com vaddr_tainted, 85010474Sandreas.hansson@arm.com ArmFault::PrefetchUncacheable, 85110474Sandreas.hansson@arm.com isStage2, ArmFault::LpaeTran); 85210037SARM gem5 Developers } 85310037SARM gem5 Developers } 85410037SARM gem5 Developers 85510037SARM gem5 Developers uint8_t ap = 0x3 & (te->ap); // 2-bit access protection field 85610037SARM gem5 Developers bool grant = false; 85710037SARM gem5 Developers 85810037SARM gem5 Developers uint8_t xn = te->xn; 85910037SARM gem5 Developers uint8_t pxn = te->pxn; 86010037SARM gem5 Developers bool r = !is_write && !is_fetch; 86110037SARM gem5 Developers bool w = is_write; 86210037SARM gem5 Developers bool x = is_fetch; 86310037SARM gem5 Developers DPRINTF(TLBVerbose, "Checking permissions: ap:%d, xn:%d, pxn:%d, r:%d, " 86410037SARM gem5 Developers "w:%d, x:%d\n", ap, xn, pxn, r, w, x); 86510037SARM gem5 Developers 86610037SARM gem5 Developers if (isStage2) { 86711575SDylan.Johnson@ARM.com assert(ArmSystem::haveVirtualization(tc) && aarch64EL != EL2); 86811575SDylan.Johnson@ARM.com // In stage 2 we use the hypervisor access permission bits. 86911575SDylan.Johnson@ARM.com // The following permissions are described in ARM DDI 0487A.f 87011575SDylan.Johnson@ARM.com // D4-1802 87111575SDylan.Johnson@ARM.com uint8_t hap = 0x3 & te->hap; 87211575SDylan.Johnson@ARM.com if (is_fetch) { 87311575SDylan.Johnson@ARM.com // sctlr.wxn overrides the xn bit 87411575SDylan.Johnson@ARM.com grant = !sctlr.wxn && !xn; 87511575SDylan.Johnson@ARM.com } else if (is_write) { 87611575SDylan.Johnson@ARM.com grant = hap & 0x2; 87711575SDylan.Johnson@ARM.com } else { // is_read 87811575SDylan.Johnson@ARM.com grant = hap & 0x1; 87911575SDylan.Johnson@ARM.com } 88010037SARM gem5 Developers } else { 88110037SARM gem5 Developers switch (aarch64EL) { 88210037SARM gem5 Developers case EL0: 88310037SARM gem5 Developers { 88410037SARM gem5 Developers uint8_t perm = (ap << 2) | (xn << 1) | pxn; 88510037SARM gem5 Developers switch (perm) { 88610037SARM gem5 Developers case 0: 88710037SARM gem5 Developers case 1: 88810037SARM gem5 Developers case 8: 88910037SARM gem5 Developers case 9: 89010037SARM gem5 Developers grant = x; 89110037SARM gem5 Developers break; 89210037SARM gem5 Developers case 4: 89310037SARM gem5 Developers case 5: 89410037SARM gem5 Developers grant = r || w || (x && !sctlr.wxn); 89510037SARM gem5 Developers break; 89610037SARM gem5 Developers case 6: 89710037SARM gem5 Developers case 7: 89810037SARM gem5 Developers grant = r || w; 89910037SARM gem5 Developers break; 90010037SARM gem5 Developers case 12: 90110037SARM gem5 Developers case 13: 90210037SARM gem5 Developers grant = r || x; 90310037SARM gem5 Developers break; 90410037SARM gem5 Developers case 14: 90510037SARM gem5 Developers case 15: 90610037SARM gem5 Developers grant = r; 90710037SARM gem5 Developers break; 90810037SARM gem5 Developers default: 90910037SARM gem5 Developers grant = false; 91010037SARM gem5 Developers } 91110037SARM gem5 Developers } 91210037SARM gem5 Developers break; 91310037SARM gem5 Developers case EL1: 91410037SARM gem5 Developers { 91510037SARM gem5 Developers uint8_t perm = (ap << 2) | (xn << 1) | pxn; 91610037SARM gem5 Developers switch (perm) { 91710037SARM gem5 Developers case 0: 91810037SARM gem5 Developers case 2: 91910037SARM gem5 Developers grant = r || w || (x && !sctlr.wxn); 92010037SARM gem5 Developers break; 92110037SARM gem5 Developers case 1: 92210037SARM gem5 Developers case 3: 92310037SARM gem5 Developers case 4: 92410037SARM gem5 Developers case 5: 92510037SARM gem5 Developers case 6: 92610037SARM gem5 Developers case 7: 92710037SARM gem5 Developers // regions that are writeable at EL0 should not be 92810037SARM gem5 Developers // executable at EL1 92910037SARM gem5 Developers grant = r || w; 93010037SARM gem5 Developers break; 93110037SARM gem5 Developers case 8: 93210037SARM gem5 Developers case 10: 93310037SARM gem5 Developers case 12: 93410037SARM gem5 Developers case 14: 93510037SARM gem5 Developers grant = r || x; 93610037SARM gem5 Developers break; 93710037SARM gem5 Developers case 9: 93810037SARM gem5 Developers case 11: 93910037SARM gem5 Developers case 13: 94010037SARM gem5 Developers case 15: 94110037SARM gem5 Developers grant = r; 94210037SARM gem5 Developers break; 94310037SARM gem5 Developers default: 94410037SARM gem5 Developers grant = false; 94510037SARM gem5 Developers } 94610037SARM gem5 Developers } 94710037SARM gem5 Developers break; 94810037SARM gem5 Developers case EL2: 94910037SARM gem5 Developers case EL3: 95010037SARM gem5 Developers { 95110037SARM gem5 Developers uint8_t perm = (ap & 0x2) | xn; 95210037SARM gem5 Developers switch (perm) { 95310037SARM gem5 Developers case 0: 95410037SARM gem5 Developers grant = r || w || (x && !sctlr.wxn) ; 95510037SARM gem5 Developers break; 95610037SARM gem5 Developers case 1: 95710037SARM gem5 Developers grant = r || w; 95810037SARM gem5 Developers break; 95910037SARM gem5 Developers case 2: 96010037SARM gem5 Developers grant = r || x; 96110037SARM gem5 Developers break; 96210037SARM gem5 Developers case 3: 96310037SARM gem5 Developers grant = r; 96410037SARM gem5 Developers break; 96510037SARM gem5 Developers default: 96610037SARM gem5 Developers grant = false; 96710037SARM gem5 Developers } 96810037SARM gem5 Developers } 96910037SARM gem5 Developers break; 97010037SARM gem5 Developers } 97110037SARM gem5 Developers } 97210037SARM gem5 Developers 97310037SARM gem5 Developers if (!grant) { 97410037SARM gem5 Developers if (is_fetch) { 97510037SARM gem5 Developers permsFaults++; 97610037SARM gem5 Developers DPRINTF(TLB, "TLB Fault: Prefetch abort on permission check. " 97710037SARM gem5 Developers "AP:%d priv:%d write:%d ns:%d sif:%d " 97810037SARM gem5 Developers "sctlr.afe: %d\n", 97910037SARM gem5 Developers ap, is_priv, is_write, te->ns, scr.sif, sctlr.afe); 98010037SARM gem5 Developers // Use PC value instead of vaddr because vaddr might be aligned to 98110037SARM gem5 Developers // cache line and should not be the address reported in FAR 98210474Sandreas.hansson@arm.com return std::make_shared<PrefetchAbort>( 98310474Sandreas.hansson@arm.com req->getPC(), 98410474Sandreas.hansson@arm.com ArmFault::PermissionLL + te->lookupLevel, 98510474Sandreas.hansson@arm.com isStage2, ArmFault::LpaeTran); 98610037SARM gem5 Developers } else { 98710037SARM gem5 Developers permsFaults++; 98810037SARM gem5 Developers DPRINTF(TLB, "TLB Fault: Data abort on permission check. AP:%d " 98910037SARM gem5 Developers "priv:%d write:%d\n", ap, is_priv, is_write); 99010474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 99110474Sandreas.hansson@arm.com vaddr_tainted, te->domain, is_write, 99210474Sandreas.hansson@arm.com ArmFault::PermissionLL + te->lookupLevel, 99310474Sandreas.hansson@arm.com isStage2, ArmFault::LpaeTran); 99410037SARM gem5 Developers } 99510037SARM gem5 Developers } 99610037SARM gem5 Developers 99710037SARM gem5 Developers return NoFault; 99810037SARM gem5 Developers} 99910037SARM gem5 Developers 100010037SARM gem5 DevelopersFault 100112749Sgiacomo.travaglini@arm.comTLB::translateFs(const RequestPtr &req, ThreadContext *tc, Mode mode, 100210037SARM gem5 Developers Translation *translation, bool &delay, bool timing, 100310037SARM gem5 Developers TLB::ArmTranslationType tranType, bool functional) 10047404SAli.Saidi@ARM.com{ 10058733Sgeoffrey.blake@arm.com // No such thing as a functional timing access 10068733Sgeoffrey.blake@arm.com assert(!(timing && functional)); 10078733Sgeoffrey.blake@arm.com 100810037SARM gem5 Developers updateMiscReg(tc, tranType); 100910037SARM gem5 Developers 101010037SARM gem5 Developers Addr vaddr_tainted = req->getVaddr(); 101110037SARM gem5 Developers Addr vaddr = 0; 101210037SARM gem5 Developers if (aarch64) 101310854SNathanael.Premillieu@arm.com vaddr = purifyTaggedAddr(vaddr_tainted, tc, aarch64EL, ttbcr); 101410037SARM gem5 Developers else 101510037SARM gem5 Developers vaddr = vaddr_tainted; 101611608Snikos.nikoleris@arm.com Request::Flags flags = req->getFlags(); 101710037SARM gem5 Developers 101810037SARM gem5 Developers bool is_fetch = (mode == Execute); 101910037SARM gem5 Developers bool is_write = (mode == Write); 102011517SCurtis.Dunham@arm.com bool long_desc_format = aarch64 || longDescFormatInUse(tc); 102110037SARM gem5 Developers ArmFault::TranMethod tranMethod = long_desc_format ? ArmFault::LpaeTran 102210037SARM gem5 Developers : ArmFault::VmsaTran; 102310037SARM gem5 Developers 102410037SARM gem5 Developers req->setAsid(asid); 102510037SARM gem5 Developers 102610037SARM gem5 Developers DPRINTF(TLBVerbose, "CPSR is priv:%d UserMode:%d secure:%d S1S2NsTran:%d\n", 102710037SARM gem5 Developers isPriv, flags & UserMode, isSecure, tranType & S1S2NsTran); 102810037SARM gem5 Developers 102910037SARM gem5 Developers DPRINTF(TLB, "translateFs addr %#x, mode %d, st2 %d, scr %#x sctlr %#x " 103011608Snikos.nikoleris@arm.com "flags %#lx tranType 0x%x\n", vaddr_tainted, mode, isStage2, 103110037SARM gem5 Developers scr, sctlr, flags, tranType); 103210037SARM gem5 Developers 10337608SGene.Wu@arm.com if ((req->isInstFetch() && (!sctlr.i)) || 10347608SGene.Wu@arm.com ((!req->isInstFetch()) && (!sctlr.c))){ 103512356Snikos.nikoleris@arm.com if (!req->isCacheMaintenance()) { 103612356Snikos.nikoleris@arm.com req->setFlags(Request::UNCACHEABLE); 103712356Snikos.nikoleris@arm.com } 103812356Snikos.nikoleris@arm.com req->setFlags(Request::STRICT_ORDER); 10397608SGene.Wu@arm.com } 10407404SAli.Saidi@ARM.com if (!is_fetch) { 104113968Sjavier.bueno@metempsy.com assert(flags & MustBeOne || req->isPrefetch()); 10427404SAli.Saidi@ARM.com if (sctlr.a || !(flags & AllowUnaligned)) { 104310037SARM gem5 Developers if (vaddr & mask(flags & AlignmentMask)) { 10447734SAli.Saidi@ARM.com alignFaults++; 104510474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 104610474Sandreas.hansson@arm.com vaddr_tainted, 104710474Sandreas.hansson@arm.com TlbEntry::DomainType::NoAccess, is_write, 104810474Sandreas.hansson@arm.com ArmFault::AlignmentFault, isStage2, 104910474Sandreas.hansson@arm.com tranMethod); 10507404SAli.Saidi@ARM.com } 10517404SAli.Saidi@ARM.com } 10527404SAli.Saidi@ARM.com } 10537404SAli.Saidi@ARM.com 105410037SARM gem5 Developers // If guest MMU is off or hcr.vm=0 go straight to stage2 105510037SARM gem5 Developers if ((isStage2 && !hcr.vm) || (!isStage2 && !sctlr.m)) { 10567404SAli.Saidi@ARM.com 10577093Sgblack@eecs.umich.edu req->setPaddr(vaddr); 105810037SARM gem5 Developers // When the MMU is off the security attribute corresponds to the 105910037SARM gem5 Developers // security state of the processor 106010037SARM gem5 Developers if (isSecure) 106110037SARM gem5 Developers req->setFlags(Request::SECURE); 106210037SARM gem5 Developers 106310037SARM gem5 Developers // @todo: double check this (ARM ARM issue C B3.2.1) 106412356Snikos.nikoleris@arm.com if (long_desc_format || sctlr.tre == 0 || nmrr.ir0 == 0 || 106512356Snikos.nikoleris@arm.com nmrr.or0 == 0 || prrr.tr0 != 0x2) { 106612356Snikos.nikoleris@arm.com if (!req->isCacheMaintenance()) { 106712356Snikos.nikoleris@arm.com req->setFlags(Request::UNCACHEABLE); 106812356Snikos.nikoleris@arm.com } 106912356Snikos.nikoleris@arm.com req->setFlags(Request::STRICT_ORDER); 10707404SAli.Saidi@ARM.com } 10717436Sdam.sunwoo@arm.com 10727436Sdam.sunwoo@arm.com // Set memory attributes 10737436Sdam.sunwoo@arm.com TlbEntry temp_te; 107410037SARM gem5 Developers temp_te.ns = !isSecure; 107510037SARM gem5 Developers if (isStage2 || hcr.dc == 0 || isSecure || 107610037SARM gem5 Developers (isHyp && !(tranType & S1CTran))) { 107710037SARM gem5 Developers 107810037SARM gem5 Developers temp_te.mtype = is_fetch ? TlbEntry::MemoryType::Normal 107910037SARM gem5 Developers : TlbEntry::MemoryType::StronglyOrdered; 108010037SARM gem5 Developers temp_te.innerAttrs = 0x0; 108110037SARM gem5 Developers temp_te.outerAttrs = 0x0; 108210037SARM gem5 Developers temp_te.shareable = true; 108310037SARM gem5 Developers temp_te.outerShareable = true; 108410037SARM gem5 Developers } else { 108510037SARM gem5 Developers temp_te.mtype = TlbEntry::MemoryType::Normal; 108610037SARM gem5 Developers temp_te.innerAttrs = 0x3; 108710037SARM gem5 Developers temp_te.outerAttrs = 0x3; 108810037SARM gem5 Developers temp_te.shareable = false; 108910037SARM gem5 Developers temp_te.outerShareable = false; 109010037SARM gem5 Developers } 109110037SARM gem5 Developers temp_te.setAttributes(long_desc_format); 109210367SAndrew.Bardsley@arm.com DPRINTF(TLBVerbose, "(No MMU) setting memory attributes: shareable: " 109310367SAndrew.Bardsley@arm.com "%d, innerAttrs: %d, outerAttrs: %d, isStage2: %d\n", 109410037SARM gem5 Developers temp_te.shareable, temp_te.innerAttrs, temp_te.outerAttrs, 109510037SARM gem5 Developers isStage2); 10967436Sdam.sunwoo@arm.com setAttr(temp_te.attributes); 10977436Sdam.sunwoo@arm.com 109811395Sandreas.sandberg@arm.com return testTranslation(req, mode, TlbEntry::DomainType::NoAccess); 10997404SAli.Saidi@ARM.com } 11007404SAli.Saidi@ARM.com 110110037SARM gem5 Developers DPRINTF(TLBVerbose, "Translating %s=%#x context=%d\n", 110210037SARM gem5 Developers isStage2 ? "IPA" : "VA", vaddr_tainted, asid); 11037404SAli.Saidi@ARM.com // Translation enabled 11047404SAli.Saidi@ARM.com 110510037SARM gem5 Developers TlbEntry *te = NULL; 110610037SARM gem5 Developers TlbEntry mergeTe; 110710037SARM gem5 Developers Fault fault = getResultTe(&te, req, tc, mode, translation, timing, 110810037SARM gem5 Developers functional, &mergeTe); 110910037SARM gem5 Developers // only proceed if we have a valid table entry 111010037SARM gem5 Developers if ((te == NULL) && (fault == NoFault)) delay = true; 111110037SARM gem5 Developers 111210037SARM gem5 Developers // If we have the table entry transfer some of the attributes to the 111310037SARM gem5 Developers // request that triggered the translation 111410037SARM gem5 Developers if (te != NULL) { 111510037SARM gem5 Developers // Set memory attributes 111610037SARM gem5 Developers DPRINTF(TLBVerbose, 111710367SAndrew.Bardsley@arm.com "Setting memory attributes: shareable: %d, innerAttrs: %d, " 111810367SAndrew.Bardsley@arm.com "outerAttrs: %d, mtype: %d, isStage2: %d\n", 111910037SARM gem5 Developers te->shareable, te->innerAttrs, te->outerAttrs, 112010037SARM gem5 Developers static_cast<uint8_t>(te->mtype), isStage2); 112110037SARM gem5 Developers setAttr(te->attributes); 112210824SAndreas.Sandberg@ARM.com 112312356Snikos.nikoleris@arm.com if (te->nonCacheable && !req->isCacheMaintenance()) 112410825SAndreas.Sandberg@ARM.com req->setFlags(Request::UNCACHEABLE); 112510825SAndreas.Sandberg@ARM.com 112610825SAndreas.Sandberg@ARM.com // Require requests to be ordered if the request goes to 112710825SAndreas.Sandberg@ARM.com // strongly ordered or device memory (i.e., anything other 112810825SAndreas.Sandberg@ARM.com // than normal memory requires strict order). 112910825SAndreas.Sandberg@ARM.com if (te->mtype != TlbEntry::MemoryType::Normal) 113010825SAndreas.Sandberg@ARM.com req->setFlags(Request::STRICT_ORDER); 113110037SARM gem5 Developers 113210508SAli.Saidi@ARM.com Addr pa = te->pAddr(vaddr); 113310508SAli.Saidi@ARM.com req->setPaddr(pa); 113410508SAli.Saidi@ARM.com 113510037SARM gem5 Developers if (isSecure && !te->ns) { 113610037SARM gem5 Developers req->setFlags(Request::SECURE); 113710037SARM gem5 Developers } 113810037SARM gem5 Developers if ((!is_fetch) && (vaddr & mask(flags & AlignmentMask)) && 113910037SARM gem5 Developers (te->mtype != TlbEntry::MemoryType::Normal)) { 114010037SARM gem5 Developers // Unaligned accesses to Device memory should always cause an 114110037SARM gem5 Developers // abort regardless of sctlr.a 114210037SARM gem5 Developers alignFaults++; 114310474Sandreas.hansson@arm.com return std::make_shared<DataAbort>( 114410474Sandreas.hansson@arm.com vaddr_tainted, 114510474Sandreas.hansson@arm.com TlbEntry::DomainType::NoAccess, is_write, 114610474Sandreas.hansson@arm.com ArmFault::AlignmentFault, isStage2, 114710474Sandreas.hansson@arm.com tranMethod); 114810037SARM gem5 Developers } 114910037SARM gem5 Developers 115010037SARM gem5 Developers // Check for a trickbox generated address fault 115111395Sandreas.sandberg@arm.com if (fault == NoFault) 115211395Sandreas.sandberg@arm.com fault = testTranslation(req, mode, te->domain); 115310037SARM gem5 Developers } 115410037SARM gem5 Developers 115510037SARM gem5 Developers if (fault == NoFault) { 115612005Sandreas.sandberg@arm.com // Don't try to finalize a physical address unless the 115712005Sandreas.sandberg@arm.com // translation has completed (i.e., there is a table entry). 115812005Sandreas.sandberg@arm.com return te ? finalizePhysical(req, tc, mode) : NoFault; 115912005Sandreas.sandberg@arm.com } else { 116012005Sandreas.sandberg@arm.com return fault; 116110037SARM gem5 Developers } 116210037SARM gem5 Developers} 116310037SARM gem5 Developers 116410037SARM gem5 DevelopersFault 116512749Sgiacomo.travaglini@arm.comTLB::translateAtomic(const RequestPtr &req, ThreadContext *tc, Mode mode, 116610037SARM gem5 Developers TLB::ArmTranslationType tranType) 116710037SARM gem5 Developers{ 116810037SARM gem5 Developers updateMiscReg(tc, tranType); 116910037SARM gem5 Developers 117010037SARM gem5 Developers if (directToStage2) { 117110037SARM gem5 Developers assert(stage2Tlb); 117210037SARM gem5 Developers return stage2Tlb->translateAtomic(req, tc, mode, tranType); 117310037SARM gem5 Developers } 117410037SARM gem5 Developers 117510037SARM gem5 Developers bool delay = false; 117610037SARM gem5 Developers Fault fault; 117710037SARM gem5 Developers if (FullSystem) 117810037SARM gem5 Developers fault = translateFs(req, tc, mode, NULL, delay, false, tranType); 117910037SARM gem5 Developers else 118010037SARM gem5 Developers fault = translateSe(req, tc, mode, NULL, delay, false); 118110037SARM gem5 Developers assert(!delay); 118210037SARM gem5 Developers return fault; 118310037SARM gem5 Developers} 118410037SARM gem5 Developers 118510037SARM gem5 DevelopersFault 118612749Sgiacomo.travaglini@arm.comTLB::translateFunctional(const RequestPtr &req, ThreadContext *tc, Mode mode, 118710037SARM gem5 Developers TLB::ArmTranslationType tranType) 118810037SARM gem5 Developers{ 118910037SARM gem5 Developers updateMiscReg(tc, tranType); 119010037SARM gem5 Developers 119110037SARM gem5 Developers if (directToStage2) { 119210037SARM gem5 Developers assert(stage2Tlb); 119310037SARM gem5 Developers return stage2Tlb->translateFunctional(req, tc, mode, tranType); 119410037SARM gem5 Developers } 119510037SARM gem5 Developers 119610037SARM gem5 Developers bool delay = false; 119710037SARM gem5 Developers Fault fault; 119810037SARM gem5 Developers if (FullSystem) 119910037SARM gem5 Developers fault = translateFs(req, tc, mode, NULL, delay, false, tranType, true); 120010037SARM gem5 Developers else 120110037SARM gem5 Developers fault = translateSe(req, tc, mode, NULL, delay, false); 120210037SARM gem5 Developers assert(!delay); 120310037SARM gem5 Developers return fault; 120410037SARM gem5 Developers} 120510037SARM gem5 Developers 120612406Sgabeblack@google.comvoid 120712749Sgiacomo.travaglini@arm.comTLB::translateTiming(const RequestPtr &req, ThreadContext *tc, 120810037SARM gem5 Developers Translation *translation, Mode mode, TLB::ArmTranslationType tranType) 120910037SARM gem5 Developers{ 121010037SARM gem5 Developers updateMiscReg(tc, tranType); 121110037SARM gem5 Developers 121210037SARM gem5 Developers if (directToStage2) { 121310037SARM gem5 Developers assert(stage2Tlb); 121412406Sgabeblack@google.com stage2Tlb->translateTiming(req, tc, translation, mode, tranType); 121512406Sgabeblack@google.com return; 121610037SARM gem5 Developers } 121710037SARM gem5 Developers 121810037SARM gem5 Developers assert(translation); 121910037SARM gem5 Developers 122012406Sgabeblack@google.com translateComplete(req, tc, translation, mode, tranType, isStage2); 122110037SARM gem5 Developers} 122210037SARM gem5 Developers 122310037SARM gem5 DevelopersFault 122412749Sgiacomo.travaglini@arm.comTLB::translateComplete(const RequestPtr &req, ThreadContext *tc, 122510037SARM gem5 Developers Translation *translation, Mode mode, TLB::ArmTranslationType tranType, 122610037SARM gem5 Developers bool callFromS2) 122710037SARM gem5 Developers{ 122810037SARM gem5 Developers bool delay = false; 122910037SARM gem5 Developers Fault fault; 123010037SARM gem5 Developers if (FullSystem) 123110037SARM gem5 Developers fault = translateFs(req, tc, mode, translation, delay, true, tranType); 123210037SARM gem5 Developers else 123310037SARM gem5 Developers fault = translateSe(req, tc, mode, translation, delay, true); 123410037SARM gem5 Developers DPRINTF(TLBVerbose, "Translation returning delay=%d fault=%d\n", delay, fault != 123510037SARM gem5 Developers NoFault); 123610037SARM gem5 Developers // If we have a translation, and we're not in the middle of doing a stage 123710037SARM gem5 Developers // 2 translation tell the translation that we've either finished or its 123810037SARM gem5 Developers // going to take a while. By not doing this when we're in the middle of a 123910037SARM gem5 Developers // stage 2 translation we prevent marking the translation as delayed twice, 124010037SARM gem5 Developers // one when the translation starts and again when the stage 1 translation 124110037SARM gem5 Developers // completes. 124210037SARM gem5 Developers if (translation && (callFromS2 || !stage2Req || req->hasPaddr() || fault != NoFault)) { 124310037SARM gem5 Developers if (!delay) 124410037SARM gem5 Developers translation->finish(fault, req, tc, mode); 124510037SARM gem5 Developers else 124610037SARM gem5 Developers translation->markDelayed(); 124710037SARM gem5 Developers } 124810037SARM gem5 Developers return fault; 124910037SARM gem5 Developers} 125010037SARM gem5 Developers 125113784Sgabeblack@google.comPort * 125213784Sgabeblack@google.comTLB::getTableWalkerPort() 125310037SARM gem5 Developers{ 125413795SAndrea.Mondelli@ucf.edu return &stage2Mmu->getDMAPort(); 125510037SARM gem5 Developers} 125610037SARM gem5 Developers 125710037SARM gem5 Developersvoid 125810037SARM gem5 DevelopersTLB::updateMiscReg(ThreadContext *tc, ArmTranslationType tranType) 125910037SARM gem5 Developers{ 126010037SARM gem5 Developers // check if the regs have changed, or the translation mode is different. 126110037SARM gem5 Developers // NOTE: the tran type doesn't affect stage 2 TLB's as they only handle 126210037SARM gem5 Developers // one type of translation anyway 126311152Smitch.hayenga@arm.com if (miscRegValid && miscRegContext == tc->contextId() && 126411152Smitch.hayenga@arm.com ((tranType == curTranType) || isStage2)) { 126510037SARM gem5 Developers return; 126610037SARM gem5 Developers } 126710037SARM gem5 Developers 126810037SARM gem5 Developers DPRINTF(TLBVerbose, "TLB variables changed!\n"); 126910854SNathanael.Premillieu@arm.com cpsr = tc->readMiscReg(MISCREG_CPSR); 127011505Sandreas.sandberg@arm.com 127110037SARM gem5 Developers // Dependencies: SCR/SCR_EL3, CPSR 127211505Sandreas.sandberg@arm.com isSecure = inSecureState(tc) && 127311505Sandreas.sandberg@arm.com !(tranType & HypMode) && !(tranType & S1S2NsTran); 127411505Sandreas.sandberg@arm.com 127512735Sandreas.sandberg@arm.com aarch64EL = tranTypeEL(cpsr, tranType); 127612735Sandreas.sandberg@arm.com aarch64 = isStage2 ? 127712735Sandreas.sandberg@arm.com ELIs64(tc, EL2) : 127812735Sandreas.sandberg@arm.com ELIs64(tc, aarch64EL == EL0 ? EL1 : aarch64EL); 127911505Sandreas.sandberg@arm.com 128010037SARM gem5 Developers if (aarch64) { // AArch64 128111577SDylan.Johnson@ARM.com // determine EL we need to translate in 128210037SARM gem5 Developers switch (aarch64EL) { 128310037SARM gem5 Developers case EL0: 128410037SARM gem5 Developers case EL1: 128510037SARM gem5 Developers { 128610037SARM gem5 Developers sctlr = tc->readMiscReg(MISCREG_SCTLR_EL1); 128710037SARM gem5 Developers ttbcr = tc->readMiscReg(MISCREG_TCR_EL1); 128810037SARM gem5 Developers uint64_t ttbr_asid = ttbcr.a1 ? 128910037SARM gem5 Developers tc->readMiscReg(MISCREG_TTBR1_EL1) : 129010037SARM gem5 Developers tc->readMiscReg(MISCREG_TTBR0_EL1); 129110037SARM gem5 Developers asid = bits(ttbr_asid, 129210037SARM gem5 Developers (haveLargeAsid64 && ttbcr.as) ? 63 : 55, 48); 129310037SARM gem5 Developers } 129410037SARM gem5 Developers break; 129510037SARM gem5 Developers case EL2: 129610037SARM gem5 Developers sctlr = tc->readMiscReg(MISCREG_SCTLR_EL2); 129710037SARM gem5 Developers ttbcr = tc->readMiscReg(MISCREG_TCR_EL2); 129810037SARM gem5 Developers asid = -1; 129910037SARM gem5 Developers break; 130010037SARM gem5 Developers case EL3: 130110037SARM gem5 Developers sctlr = tc->readMiscReg(MISCREG_SCTLR_EL3); 130210037SARM gem5 Developers ttbcr = tc->readMiscReg(MISCREG_TCR_EL3); 130310037SARM gem5 Developers asid = -1; 130410037SARM gem5 Developers break; 130510037SARM gem5 Developers } 130611575SDylan.Johnson@ARM.com hcr = tc->readMiscReg(MISCREG_HCR_EL2); 130710037SARM gem5 Developers scr = tc->readMiscReg(MISCREG_SCR_EL3); 130810037SARM gem5 Developers isPriv = aarch64EL != EL0; 130911575SDylan.Johnson@ARM.com if (haveVirtualization) { 131011575SDylan.Johnson@ARM.com vmid = bits(tc->readMiscReg(MISCREG_VTTBR_EL2), 55, 48); 131113889Sgiacomo.travaglini@arm.com isHyp = aarch64EL == EL2; 131213889Sgiacomo.travaglini@arm.com isHyp |= tranType & HypMode; 131311575SDylan.Johnson@ARM.com isHyp &= (tranType & S1S2NsTran) == 0; 131411575SDylan.Johnson@ARM.com isHyp &= (tranType & S1CTran) == 0; 131511575SDylan.Johnson@ARM.com // Work out if we should skip the first stage of translation and go 131611575SDylan.Johnson@ARM.com // directly to stage 2. This value is cached so we don't have to 131711575SDylan.Johnson@ARM.com // compute it for every translation. 131811575SDylan.Johnson@ARM.com stage2Req = isStage2 || 131911575SDylan.Johnson@ARM.com (hcr.vm && !isHyp && !isSecure && 132011577SDylan.Johnson@ARM.com !(tranType & S1CTran) && (aarch64EL < EL2) && 132111577SDylan.Johnson@ARM.com !(tranType & S1E1Tran)); // <--- FIX THIS HACK 132213374Sanouk.vanlaer@arm.com stage2DescReq = isStage2 || (hcr.vm && !isHyp && !isSecure && 132313374Sanouk.vanlaer@arm.com (aarch64EL < EL2)); 132411575SDylan.Johnson@ARM.com directToStage2 = !isStage2 && stage2Req && !sctlr.m; 132511575SDylan.Johnson@ARM.com } else { 132611575SDylan.Johnson@ARM.com vmid = 0; 132711575SDylan.Johnson@ARM.com isHyp = false; 132811575SDylan.Johnson@ARM.com directToStage2 = false; 132911575SDylan.Johnson@ARM.com stage2Req = false; 133013374Sanouk.vanlaer@arm.com stage2DescReq = false; 133111575SDylan.Johnson@ARM.com } 133210037SARM gem5 Developers } else { // AArch32 133312499Sgiacomo.travaglini@arm.com sctlr = tc->readMiscReg(snsBankedIndex(MISCREG_SCTLR, tc, 133410037SARM gem5 Developers !isSecure)); 133512499Sgiacomo.travaglini@arm.com ttbcr = tc->readMiscReg(snsBankedIndex(MISCREG_TTBCR, tc, 133610037SARM gem5 Developers !isSecure)); 133710037SARM gem5 Developers scr = tc->readMiscReg(MISCREG_SCR); 133810037SARM gem5 Developers isPriv = cpsr.mode != MODE_USER; 133911517SCurtis.Dunham@arm.com if (longDescFormatInUse(tc)) { 134010037SARM gem5 Developers uint64_t ttbr_asid = tc->readMiscReg( 134112499Sgiacomo.travaglini@arm.com snsBankedIndex(ttbcr.a1 ? MISCREG_TTBR1 : 134212499Sgiacomo.travaglini@arm.com MISCREG_TTBR0, 134310037SARM gem5 Developers tc, !isSecure)); 134410037SARM gem5 Developers asid = bits(ttbr_asid, 55, 48); 134511517SCurtis.Dunham@arm.com } else { // Short-descriptor translation table format in use 134612499Sgiacomo.travaglini@arm.com CONTEXTIDR context_id = tc->readMiscReg(snsBankedIndex( 134710037SARM gem5 Developers MISCREG_CONTEXTIDR, tc,!isSecure)); 134810037SARM gem5 Developers asid = context_id.asid; 134910037SARM gem5 Developers } 135012499Sgiacomo.travaglini@arm.com prrr = tc->readMiscReg(snsBankedIndex(MISCREG_PRRR, tc, 135110037SARM gem5 Developers !isSecure)); 135212499Sgiacomo.travaglini@arm.com nmrr = tc->readMiscReg(snsBankedIndex(MISCREG_NMRR, tc, 135310037SARM gem5 Developers !isSecure)); 135412499Sgiacomo.travaglini@arm.com dacr = tc->readMiscReg(snsBankedIndex(MISCREG_DACR, tc, 135510037SARM gem5 Developers !isSecure)); 135610037SARM gem5 Developers hcr = tc->readMiscReg(MISCREG_HCR); 135710037SARM gem5 Developers 135810037SARM gem5 Developers if (haveVirtualization) { 135910037SARM gem5 Developers vmid = bits(tc->readMiscReg(MISCREG_VTTBR), 55, 48); 136010037SARM gem5 Developers isHyp = cpsr.mode == MODE_HYP; 136110037SARM gem5 Developers isHyp |= tranType & HypMode; 136210037SARM gem5 Developers isHyp &= (tranType & S1S2NsTran) == 0; 136310037SARM gem5 Developers isHyp &= (tranType & S1CTran) == 0; 136410037SARM gem5 Developers if (isHyp) { 136510037SARM gem5 Developers sctlr = tc->readMiscReg(MISCREG_HSCTLR); 136610037SARM gem5 Developers } 136710037SARM gem5 Developers // Work out if we should skip the first stage of translation and go 136810037SARM gem5 Developers // directly to stage 2. This value is cached so we don't have to 136910037SARM gem5 Developers // compute it for every translation. 137010037SARM gem5 Developers stage2Req = hcr.vm && !isStage2 && !isHyp && !isSecure && 137110037SARM gem5 Developers !(tranType & S1CTran); 137213374Sanouk.vanlaer@arm.com stage2DescReq = hcr.vm && !isStage2 && !isHyp && !isSecure; 137310037SARM gem5 Developers directToStage2 = stage2Req && !sctlr.m; 137410037SARM gem5 Developers } else { 137510037SARM gem5 Developers vmid = 0; 137610037SARM gem5 Developers stage2Req = false; 137710037SARM gem5 Developers isHyp = false; 137810037SARM gem5 Developers directToStage2 = false; 137913374Sanouk.vanlaer@arm.com stage2DescReq = false; 138010037SARM gem5 Developers } 138110037SARM gem5 Developers } 138210037SARM gem5 Developers miscRegValid = true; 138311152Smitch.hayenga@arm.com miscRegContext = tc->contextId(); 138410037SARM gem5 Developers curTranType = tranType; 138510037SARM gem5 Developers} 138610037SARM gem5 Developers 138712735Sandreas.sandberg@arm.comExceptionLevel 138812735Sandreas.sandberg@arm.comTLB::tranTypeEL(CPSR cpsr, ArmTranslationType type) 138912735Sandreas.sandberg@arm.com{ 139012735Sandreas.sandberg@arm.com switch (type) { 139112735Sandreas.sandberg@arm.com case S1E0Tran: 139212735Sandreas.sandberg@arm.com case S12E0Tran: 139312735Sandreas.sandberg@arm.com return EL0; 139412735Sandreas.sandberg@arm.com 139512735Sandreas.sandberg@arm.com case S1E1Tran: 139612735Sandreas.sandberg@arm.com case S12E1Tran: 139712735Sandreas.sandberg@arm.com return EL1; 139812735Sandreas.sandberg@arm.com 139912735Sandreas.sandberg@arm.com case S1E2Tran: 140012735Sandreas.sandberg@arm.com return EL2; 140112735Sandreas.sandberg@arm.com 140212735Sandreas.sandberg@arm.com case S1E3Tran: 140312735Sandreas.sandberg@arm.com return EL3; 140412735Sandreas.sandberg@arm.com 140512735Sandreas.sandberg@arm.com case NormalTran: 140612735Sandreas.sandberg@arm.com case S1CTran: 140712735Sandreas.sandberg@arm.com case S1S2NsTran: 140812735Sandreas.sandberg@arm.com case HypMode: 140912735Sandreas.sandberg@arm.com return opModeToEL((OperatingMode)(uint8_t)cpsr.mode); 141012735Sandreas.sandberg@arm.com 141112735Sandreas.sandberg@arm.com default: 141212735Sandreas.sandberg@arm.com panic("Unknown translation mode!\n"); 141312735Sandreas.sandberg@arm.com } 141412735Sandreas.sandberg@arm.com} 141512735Sandreas.sandberg@arm.com 141610037SARM gem5 DevelopersFault 141712749Sgiacomo.travaglini@arm.comTLB::getTE(TlbEntry **te, const RequestPtr &req, ThreadContext *tc, Mode mode, 141810037SARM gem5 Developers Translation *translation, bool timing, bool functional, 141910037SARM gem5 Developers bool is_secure, TLB::ArmTranslationType tranType) 142010037SARM gem5 Developers{ 142114066Sanouk.vanlaer@arm.com // In a 2-stage system, the IPA->PA translation can be started via this 142214066Sanouk.vanlaer@arm.com // call so make sure the miscRegs are correct. 142314066Sanouk.vanlaer@arm.com if (isStage2) { 142414066Sanouk.vanlaer@arm.com updateMiscReg(tc, tranType); 142514066Sanouk.vanlaer@arm.com } 142610037SARM gem5 Developers bool is_fetch = (mode == Execute); 142710037SARM gem5 Developers bool is_write = (mode == Write); 142810037SARM gem5 Developers 142910037SARM gem5 Developers Addr vaddr_tainted = req->getVaddr(); 143010037SARM gem5 Developers Addr vaddr = 0; 143110037SARM gem5 Developers ExceptionLevel target_el = aarch64 ? aarch64EL : EL1; 143210037SARM gem5 Developers if (aarch64) { 143310854SNathanael.Premillieu@arm.com vaddr = purifyTaggedAddr(vaddr_tainted, tc, target_el, ttbcr); 143410037SARM gem5 Developers } else { 143510037SARM gem5 Developers vaddr = vaddr_tainted; 143610037SARM gem5 Developers } 143710037SARM gem5 Developers *te = lookup(vaddr, asid, vmid, isHyp, is_secure, false, false, target_el); 143810037SARM gem5 Developers if (*te == NULL) { 143910037SARM gem5 Developers if (req->isPrefetch()) { 144010037SARM gem5 Developers // if the request is a prefetch don't attempt to fill the TLB or go 144110037SARM gem5 Developers // any further with the memory access (here we can safely use the 144210037SARM gem5 Developers // fault status for the short desc. format in all cases) 14437734SAli.Saidi@ARM.com prefetchFaults++; 144410474Sandreas.hansson@arm.com return std::make_shared<PrefetchAbort>( 144510474Sandreas.hansson@arm.com vaddr_tainted, ArmFault::PrefetchTLBMiss, isStage2); 14467611SGene.Wu@arm.com } 14477734SAli.Saidi@ARM.com 14487734SAli.Saidi@ARM.com if (is_fetch) 14497734SAli.Saidi@ARM.com instMisses++; 14507734SAli.Saidi@ARM.com else if (is_write) 14517734SAli.Saidi@ARM.com writeMisses++; 14527734SAli.Saidi@ARM.com else 14537734SAli.Saidi@ARM.com readMisses++; 14547734SAli.Saidi@ARM.com 14557404SAli.Saidi@ARM.com // start translation table walk, pass variables rather than 14567404SAli.Saidi@ARM.com // re-retreaving in table walker for speed 145710037SARM gem5 Developers DPRINTF(TLB, "TLB Miss: Starting hardware table walker for %#x(%d:%d)\n", 145810037SARM gem5 Developers vaddr_tainted, asid, vmid); 145910037SARM gem5 Developers Fault fault; 146010037SARM gem5 Developers fault = tableWalker->walk(req, tc, asid, vmid, isHyp, mode, 146110037SARM gem5 Developers translation, timing, functional, is_secure, 146213374Sanouk.vanlaer@arm.com tranType, stage2DescReq); 146310037SARM gem5 Developers // for timing mode, return and wait for table walk, 146410037SARM gem5 Developers if (timing || fault != NoFault) { 14657437Sdam.sunwoo@arm.com return fault; 14667437Sdam.sunwoo@arm.com } 14677404SAli.Saidi@ARM.com 146810037SARM gem5 Developers *te = lookup(vaddr, asid, vmid, isHyp, is_secure, false, false, target_el); 146910037SARM gem5 Developers if (!*te) 14707404SAli.Saidi@ARM.com printTlb(); 147110037SARM gem5 Developers assert(*te); 14727734SAli.Saidi@ARM.com } else { 14737734SAli.Saidi@ARM.com if (is_fetch) 14747734SAli.Saidi@ARM.com instHits++; 14757734SAli.Saidi@ARM.com else if (is_write) 14767734SAli.Saidi@ARM.com writeHits++; 14777734SAli.Saidi@ARM.com else 14787734SAli.Saidi@ARM.com readHits++; 14797404SAli.Saidi@ARM.com } 14806757SAli.Saidi@ARM.com return NoFault; 14817404SAli.Saidi@ARM.com} 14826757SAli.Saidi@ARM.com 14837404SAli.Saidi@ARM.comFault 148412749Sgiacomo.travaglini@arm.comTLB::getResultTe(TlbEntry **te, const RequestPtr &req, 148512749Sgiacomo.travaglini@arm.com ThreadContext *tc, Mode mode, 148610037SARM gem5 Developers Translation *translation, bool timing, bool functional, 148710037SARM gem5 Developers TlbEntry *mergeTe) 14887404SAli.Saidi@ARM.com{ 14897404SAli.Saidi@ARM.com Fault fault; 149011575SDylan.Johnson@ARM.com 149111575SDylan.Johnson@ARM.com if (isStage2) { 149211575SDylan.Johnson@ARM.com // We are already in the stage 2 TLB. Grab the table entry for stage 149311575SDylan.Johnson@ARM.com // 2 only. We are here because stage 1 translation is disabled. 149411575SDylan.Johnson@ARM.com TlbEntry *s2Te = NULL; 149511575SDylan.Johnson@ARM.com // Get the stage 2 table entry 149611575SDylan.Johnson@ARM.com fault = getTE(&s2Te, req, tc, mode, translation, timing, functional, 149711575SDylan.Johnson@ARM.com isSecure, curTranType); 149811575SDylan.Johnson@ARM.com // Check permissions of stage 2 149912528Schuan.zhu@arm.com if ((s2Te != NULL) && (fault == NoFault)) { 150012528Schuan.zhu@arm.com if (aarch64) 150111575SDylan.Johnson@ARM.com fault = checkPermissions64(s2Te, req, mode, tc); 150211575SDylan.Johnson@ARM.com else 150311575SDylan.Johnson@ARM.com fault = checkPermissions(s2Te, req, mode); 150411575SDylan.Johnson@ARM.com } 150511575SDylan.Johnson@ARM.com *te = s2Te; 150611575SDylan.Johnson@ARM.com return fault; 150711575SDylan.Johnson@ARM.com } 150811575SDylan.Johnson@ARM.com 150910037SARM gem5 Developers TlbEntry *s1Te = NULL; 151010037SARM gem5 Developers 151110037SARM gem5 Developers Addr vaddr_tainted = req->getVaddr(); 151210037SARM gem5 Developers 151310037SARM gem5 Developers // Get the stage 1 table entry 151410037SARM gem5 Developers fault = getTE(&s1Te, req, tc, mode, translation, timing, functional, 151510037SARM gem5 Developers isSecure, curTranType); 151610037SARM gem5 Developers // only proceed if we have a valid table entry 151710037SARM gem5 Developers if ((s1Te != NULL) && (fault == NoFault)) { 151810037SARM gem5 Developers // Check stage 1 permissions before checking stage 2 151910037SARM gem5 Developers if (aarch64) 152010037SARM gem5 Developers fault = checkPermissions64(s1Te, req, mode, tc); 152110037SARM gem5 Developers else 152210037SARM gem5 Developers fault = checkPermissions(s1Te, req, mode); 152310037SARM gem5 Developers if (stage2Req & (fault == NoFault)) { 152410037SARM gem5 Developers Stage2LookUp *s2Lookup = new Stage2LookUp(this, stage2Tlb, *s1Te, 152510037SARM gem5 Developers req, translation, mode, timing, functional, curTranType); 152610037SARM gem5 Developers fault = s2Lookup->getTe(tc, mergeTe); 152710037SARM gem5 Developers if (s2Lookup->isComplete()) { 152810037SARM gem5 Developers *te = mergeTe; 152910037SARM gem5 Developers // We've finished with the lookup so delete it 153010037SARM gem5 Developers delete s2Lookup; 153110037SARM gem5 Developers } else { 153210037SARM gem5 Developers // The lookup hasn't completed, so we can't delete it now. We 153310037SARM gem5 Developers // get round this by asking the object to self delete when the 153410037SARM gem5 Developers // translation is complete. 153510037SARM gem5 Developers s2Lookup->setSelfDelete(); 153610037SARM gem5 Developers } 153710037SARM gem5 Developers } else { 153810037SARM gem5 Developers // This case deals with an S1 hit (or bypass), followed by 153910037SARM gem5 Developers // an S2 hit-but-perms issue 154010037SARM gem5 Developers if (isStage2) { 154110037SARM gem5 Developers DPRINTF(TLBVerbose, "s2TLB: reqVa %#x, reqPa %#x, fault %p\n", 154210037SARM gem5 Developers vaddr_tainted, req->hasPaddr() ? req->getPaddr() : ~0, fault); 154310037SARM gem5 Developers if (fault != NoFault) { 154410037SARM gem5 Developers ArmFault *armFault = reinterpret_cast<ArmFault *>(fault.get()); 154510037SARM gem5 Developers armFault->annotate(ArmFault::S1PTW, false); 154610037SARM gem5 Developers armFault->annotate(ArmFault::OVA, vaddr_tainted); 154710037SARM gem5 Developers } 154810037SARM gem5 Developers } 154910037SARM gem5 Developers *te = s1Te; 155010037SARM gem5 Developers } 155110037SARM gem5 Developers } 15527404SAli.Saidi@ARM.com return fault; 15536019Shines@cs.fsu.edu} 15546019Shines@cs.fsu.edu 155511395Sandreas.sandberg@arm.comvoid 155611395Sandreas.sandberg@arm.comTLB::setTestInterface(SimObject *_ti) 155711395Sandreas.sandberg@arm.com{ 155811395Sandreas.sandberg@arm.com if (!_ti) { 155911395Sandreas.sandberg@arm.com test = nullptr; 156011395Sandreas.sandberg@arm.com } else { 156111395Sandreas.sandberg@arm.com TlbTestInterface *ti(dynamic_cast<TlbTestInterface *>(_ti)); 156211395Sandreas.sandberg@arm.com fatal_if(!ti, "%s is not a valid ARM TLB tester\n", _ti->name()); 156311395Sandreas.sandberg@arm.com test = ti; 156411395Sandreas.sandberg@arm.com } 156511395Sandreas.sandberg@arm.com} 156611395Sandreas.sandberg@arm.com 156711395Sandreas.sandberg@arm.comFault 156812749Sgiacomo.travaglini@arm.comTLB::testTranslation(const RequestPtr &req, Mode mode, 156912749Sgiacomo.travaglini@arm.com TlbEntry::DomainType domain) 157011395Sandreas.sandberg@arm.com{ 157112506Snikos.nikoleris@arm.com if (!test || !req->hasSize() || req->getSize() == 0 || 157212506Snikos.nikoleris@arm.com req->isCacheMaintenance()) { 157311395Sandreas.sandberg@arm.com return NoFault; 157411395Sandreas.sandberg@arm.com } else { 157511395Sandreas.sandberg@arm.com return test->translationCheck(req, isPriv, mode, domain); 157611395Sandreas.sandberg@arm.com } 157711395Sandreas.sandberg@arm.com} 157811395Sandreas.sandberg@arm.com 157911395Sandreas.sandberg@arm.comFault 158011395Sandreas.sandberg@arm.comTLB::testWalk(Addr pa, Addr size, Addr va, bool is_secure, Mode mode, 158111395Sandreas.sandberg@arm.com TlbEntry::DomainType domain, LookupLevel lookup_level) 158211395Sandreas.sandberg@arm.com{ 158311395Sandreas.sandberg@arm.com if (!test) { 158411395Sandreas.sandberg@arm.com return NoFault; 158511395Sandreas.sandberg@arm.com } else { 158611395Sandreas.sandberg@arm.com return test->walkCheck(pa, size, va, is_secure, isPriv, mode, 158711395Sandreas.sandberg@arm.com domain, lookup_level); 158811395Sandreas.sandberg@arm.com } 158911395Sandreas.sandberg@arm.com} 159011395Sandreas.sandberg@arm.com 159111395Sandreas.sandberg@arm.com 15926116Snate@binkert.orgArmISA::TLB * 15936116Snate@binkert.orgArmTLBParams::create() 15946019Shines@cs.fsu.edu{ 15956116Snate@binkert.org return new ArmISA::TLB(this); 15966019Shines@cs.fsu.edu} 1597