tlbi_op.cc

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/*
 * Copyright (c) 2018-2023 Arm Limited
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 *
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 * property including but not limited to intellectual property relating
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 * met: redistributions of source code must retain the above copyright
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 * redistributions in binary form must reproduce the above copyright
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 * this software without specific prior written permission.
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 */
 
#include "arch/arm/tlbi_op.hh"
 
#include "arch/arm/mmu.hh"
#include "cpu/checker/cpu.hh"
 
namespace gem5
{
 
namespace ArmISA {
 
void
TLBIALL::operator()(ThreadContext* tc)
{
    el2Enabled = EL2Enabled(tc);
    currentEL = currEL(tc);
 
    getMMUPtr(tc)->flush(*this);
 
    // If CheckerCPU is connected, need to notify it of a flush
    CheckerCPU *checker = tc->getCheckerCpuPtr();
    if (checker) {
        getMMUPtr(checker)->flush(*this);
    }
}
 
bool
TLBIALL::match(TlbEntry* te, vmid_t vmid) const
{
    return te->valid && secureLookup == !te->nstid &&
        (te->vmid == vmid || el2Enabled) &&
        te->checkRegime(targetRegime);
}
 
void
ITLBIALL::operator()(ThreadContext* tc)
{
    el2Enabled = EL2Enabled(tc);
    getMMUPtr(tc)->iflush(*this);
}
 
bool
ITLBIALL::match(TlbEntry* te, vmid_t vmid) const
{
    return TLBIALL::match(te, vmid) && (te->type & TypeTLB::instruction);
}
 
void
DTLBIALL::operator()(ThreadContext* tc)
{
    el2Enabled = EL2Enabled(tc);
    getMMUPtr(tc)->dflush(*this);
}
 
bool
DTLBIALL::match(TlbEntry* te, vmid_t vmid) const
{
    return TLBIALL::match(te, vmid) && (te->type & TypeTLB::data);
}
 
void
TLBIALLEL::operator()(ThreadContext* tc)
{
    getMMUPtr(tc)->flush(*this);
 
    // If CheckerCPU is connected, need to notify it of a flush
    CheckerCPU *checker = tc->getCheckerCpuPtr();
    if (checker) {
        getMMUPtr(checker)->flush(*this);
    }
}
 
bool
TLBIALLEL::match(TlbEntry* te, vmid_t vmid) const
{
    return te->valid && secureLookup == !te->nstid &&
        te->checkRegime(targetRegime);
}
 
void
TLBIVMALL::operator()(ThreadContext* tc)
{
    el2Enabled = EL2Enabled(tc);
 
    getMMUPtr(tc)->flush(*this);
 
    // If CheckerCPU is connected, need to notify it of a flush
    CheckerCPU *checker = tc->getCheckerCpuPtr();
    if (checker) {
        getMMUPtr(checker)->flush(*this);
    }
}
 
bool
TLBIVMALL::match(TlbEntry* te, vmid_t vmid) const
{
    return te->valid && secureLookup == !te->nstid &&
        te->checkRegime(targetRegime) &&
        (te->vmid == vmid || !el2Enabled || !useVMID(targetRegime));
}
 
void
TLBIASID::operator()(ThreadContext* tc)
{
    el2Enabled = EL2Enabled(tc);
 
    getMMUPtr(tc)->flushStage1(*this);
    CheckerCPU *checker = tc->getCheckerCpuPtr();
    if (checker) {
        getMMUPtr(checker)->flushStage1(*this);
    }
}
 
bool
TLBIASID::match(TlbEntry* te, vmid_t vmid) const
{
    return te->valid && te->asid == asid &&
        secureLookup == !te->nstid &&
        te->checkRegime(targetRegime) &&
        (te->vmid == vmid || !el2Enabled || !useVMID(targetRegime));
}
 
void
ITLBIASID::operator()(ThreadContext* tc)
{
    el2Enabled = EL2Enabled(tc);
    getMMUPtr(tc)->iflush(*this);
}
 
bool
ITLBIASID::match(TlbEntry* te, vmid_t vmid) const
{
    return TLBIASID::match(te, vmid) && (te->type & TypeTLB::instruction);
}
 
void
DTLBIASID::operator()(ThreadContext* tc)
{
    el2Enabled = EL2Enabled(tc);
    getMMUPtr(tc)->dflush(*this);
}
 
bool
DTLBIASID::match(TlbEntry* te, vmid_t vmid) const
{
    return TLBIASID::match(te, vmid) && (te->type & TypeTLB::data);
}
 
void
TLBIALLN::operator()(ThreadContext* tc)
{
    getMMUPtr(tc)->flush(*this);
 
    CheckerCPU *checker = tc->getCheckerCpuPtr();
    if (checker) {
        getMMUPtr(checker)->flush(*this);
    }
}
 
bool
TLBIALLN::match(TlbEntry* te, vmid_t vmid) const
{
    return te->valid && te->nstid &&
        te->checkRegime(targetRegime);
}
 
TlbEntry::Lookup
TLBIMVAA::lookupGen(vmid_t vmid) const
{
    TlbEntry::Lookup lookup_data;
    lookup_data.va = sext<56>(addr);
    lookup_data.ignoreAsn = true;
    lookup_data.vmid = vmid;
    lookup_data.secure = secureLookup;
    lookup_data.functional = true;
    lookup_data.targetRegime = targetRegime;
    lookup_data.mode = BaseMMU::Read;
    return lookup_data;
}
 
void
TLBIMVAA::operator()(ThreadContext* tc)
{
    getMMUPtr(tc)->flushStage1(*this);
 
    CheckerCPU *checker = tc->getCheckerCpuPtr();
    if (checker) {
        getMMUPtr(checker)->flushStage1(*this);
    }
}
 
bool
TLBIMVAA::match(TlbEntry* te, vmid_t vmid) const
{
    TlbEntry::Lookup lookup_data = lookupGen(vmid);
 
    return te->match(lookup_data) && (!lastLevel || !te->partial);
}
 
TlbEntry::Lookup
TLBIMVA::lookupGen(vmid_t vmid) const
{
    TlbEntry::Lookup lookup_data;
    lookup_data.va = sext<56>(addr);
    lookup_data.asn = asid;
    lookup_data.ignoreAsn = false;
    lookup_data.vmid = vmid;
    lookup_data.secure = secureLookup;
    lookup_data.functional = true;
    lookup_data.targetRegime = targetRegime;
    lookup_data.mode = BaseMMU::Read;
 
    return lookup_data;
}
 
void
TLBIMVA::operator()(ThreadContext* tc)
{
    getMMUPtr(tc)->flushStage1(*this);
 
    CheckerCPU *checker = tc->getCheckerCpuPtr();
    if (checker) {
        getMMUPtr(checker)->flushStage1(*this);
    }
}
 
bool
TLBIMVA::match(TlbEntry* te, vmid_t vmid) const
{
    TlbEntry::Lookup lookup_data = lookupGen(vmid);
 
    return te->match(lookup_data) && (!lastLevel || !te->partial);
}
 
void
ITLBIMVA::operator()(ThreadContext* tc)
{
    getMMUPtr(tc)->iflush(*this);
}
 
bool
ITLBIMVA::match(TlbEntry* te, vmid_t vmid) const
{
    return TLBIMVA::match(te, vmid) && (te->type & TypeTLB::instruction);
}
 
void
DTLBIMVA::operator()(ThreadContext* tc)
{
    getMMUPtr(tc)->dflush(*this);
}
 
bool
DTLBIMVA::match(TlbEntry* te, vmid_t vmid) const
{
    return TLBIMVA::match(te, vmid) && (te->type & TypeTLB::data);
}
 
void
TLBIIPA::operator()(ThreadContext* tc)
{
    getMMUPtr(tc)->flushStage2(makeStage2());
 
    CheckerCPU *checker = tc->getCheckerCpuPtr();
    if (checker) {
        getMMUPtr(checker)->flushStage2(makeStage2());
    }
}
 
bool
TLBIRMVA::match(TlbEntry* te, vmid_t vmid) const
{
    TlbEntry::Lookup lookup_data = lookupGen(vmid);
    lookup_data.size = rangeSize();
 
    auto addr_match = te->match(lookup_data) && (!lastLevel || !te->partial);
    if (addr_match) {
        return tgMap[rangeData.tg] == te->tg &&
        (resTLBIttl(rangeData.tg, rangeData.ttl) ||
            rangeData.ttl == te->lookupLevel);
    } else {
        return false;
    }
}
 
bool
TLBIRMVAA::match(TlbEntry* te, vmid_t vmid) const
{
    TlbEntry::Lookup lookup_data = lookupGen(vmid);
    lookup_data.size = rangeSize();
 
    auto addr_match = te->match(lookup_data) && (!lastLevel || !te->partial);
    if (addr_match) {
        return tgMap[rangeData.tg] == te->tg &&
        (resTLBIttl(rangeData.tg, rangeData.ttl) ||
            rangeData.ttl == te->lookupLevel);
    } else {
        return false;
    }
}
 
} // namespace ArmISA
} // namespace gem5