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X86ISA::TLB Class Reference

#include <tlb.hh>

Inheritance diagram for X86ISA::TLB:
BaseTLB SimObject EventManager Serializable Drainable Stats::Group

Classes

struct  TlbStats
 

Public Types

typedef X86TLBParams Params
 
- Public Types inherited from BaseTLB
enum  Mode { Read, Write, Execute }
 
- Public Types inherited from SimObject
typedef SimObjectParams Params
 

Public Member Functions

 TLB (const Params *p)
 
void takeOverFrom (BaseTLB *otlb) override
 Take over from an old tlb context. More...
 
TlbEntrylookup (Addr va, bool update_lru=true)
 
void setConfigAddress (uint32_t addr)
 
WalkergetWalker ()
 
void flushAll () override
 Remove all entries from the TLB. More...
 
void flushNonGlobal ()
 
void demapPage (Addr va, uint64_t asn) override
 
void evictLRU ()
 
uint64_t nextSeq ()
 
Fault translateAtomic (const RequestPtr &req, ThreadContext *tc, Mode mode) override
 
Fault translateFunctional (const RequestPtr &req, ThreadContext *tc, Mode mode) override
 
void translateTiming (const RequestPtr &req, ThreadContext *tc, Translation *translation, Mode mode) override
 
Fault finalizePhysical (const RequestPtr &req, ThreadContext *tc, Mode mode) const override
 Do post-translation physical address finalization. More...
 
TlbEntryinsert (Addr vpn, const TlbEntry &entry)
 
void serialize (CheckpointOut &cp) const override
 Serialize an object. More...
 
void unserialize (CheckpointIn &cp) override
 Unserialize an object. More...
 
PortgetTableWalkerPort () override
 Get the table walker port. More...
 
- Public Member Functions inherited from BaseTLB
void memInvalidate ()
 Invalidate the contents of memory buffers. More...
 
- Public Member Functions inherited from SimObject
const Paramsparams () const
 
 SimObject (const Params *_params)
 
virtual ~SimObject ()
 
virtual const std::string name () const
 
virtual void init ()
 init() is called after all C++ SimObjects have been created and all ports are connected. More...
 
virtual void loadState (CheckpointIn &cp)
 loadState() is called on each SimObject when restoring from a checkpoint. More...
 
virtual void initState ()
 initState() is called on each SimObject when not restoring from a checkpoint. More...
 
virtual void regProbePoints ()
 Register probe points for this object. More...
 
virtual void regProbeListeners ()
 Register probe listeners for this object. More...
 
ProbeManagergetProbeManager ()
 Get the probe manager for this object. More...
 
virtual PortgetPort (const std::string &if_name, PortID idx=InvalidPortID)
 Get a port with a given name and index. More...
 
virtual void startup ()
 startup() is the final initialization call before simulation. More...
 
DrainState drain () override
 Provide a default implementation of the drain interface for objects that don't need draining. More...
 
virtual void memWriteback ()
 Write back dirty buffers to memory using functional writes. More...
 
void serialize (CheckpointOut &cp) const override
 Serialize an object. More...
 
void unserialize (CheckpointIn &cp) override
 Unserialize an object. More...
 
- Public Member Functions inherited from EventManager
EventQueueeventQueue () const
 
void schedule (Event &event, Tick when)
 
void deschedule (Event &event)
 
void reschedule (Event &event, Tick when, bool always=false)
 
void schedule (Event *event, Tick when)
 
void deschedule (Event *event)
 
void reschedule (Event *event, Tick when, bool always=false)
 
void wakeupEventQueue (Tick when=(Tick) -1)
 This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers. More...
 
void setCurTick (Tick newVal)
 
 EventManager (EventManager &em)
 Event manger manages events in the event queue. More...
 
 EventManager (EventManager *em)
 
 EventManager (EventQueue *eq)
 
- Public Member Functions inherited from Serializable
 Serializable ()
 
virtual ~Serializable ()
 
void serializeSection (CheckpointOut &cp, const char *name) const
 Serialize an object into a new section. More...
 
void serializeSection (CheckpointOut &cp, const std::string &name) const
 
void unserializeSection (CheckpointIn &cp, const char *name)
 Unserialize an a child object. More...
 
void unserializeSection (CheckpointIn &cp, const std::string &name)
 
- Public Member Functions inherited from Drainable
DrainState drainState () const
 Return the current drain state of an object. More...
 
virtual void notifyFork ()
 Notify a child process of a fork. More...
 
- Public Member Functions inherited from Stats::Group
 Group (Group *parent, const char *name=nullptr)
 Construct a new statistics group. More...
 
virtual ~Group ()
 
virtual void regStats ()
 Callback to set stat parameters. More...
 
virtual void resetStats ()
 Callback to reset stats. More...
 
virtual void preDumpStats ()
 Callback before stats are dumped. More...
 
void addStat (Stats::Info *info)
 Register a stat with this group. More...
 
const std::map< std::string, Group * > & getStatGroups () const
 Get all child groups associated with this object. More...
 
const std::vector< Info * > & getStats () const
 Get all stats associated with this object. More...
 
void addStatGroup (const char *name, Group *block)
 Add a stat block as a child of this block. More...
 
const InforesolveStat (std::string name) const
 Resolve a stat by its name within this group. More...
 
 Group ()=delete
 
 Group (const Group &)=delete
 
Groupoperator= (const Group &)=delete
 

Protected Types

typedef std::list< TlbEntry * > EntryList
 

Protected Member Functions

EntryList::iterator lookupIt (Addr va, bool update_lru=true)
 
Fault translateInt (bool read, RequestPtr req, ThreadContext *tc)
 
Fault translate (const RequestPtr &req, ThreadContext *tc, Translation *translation, Mode mode, bool &delayedResponse, bool timing)
 
- Protected Member Functions inherited from BaseTLB
 BaseTLB (const Params *p)
 
- Protected Member Functions inherited from Drainable
 Drainable ()
 
virtual ~Drainable ()
 
virtual void drainResume ()
 Resume execution after a successful drain. More...
 
void signalDrainDone () const
 Signal that an object is drained. More...
 

Protected Attributes

uint32_t configAddress
 
Walkerwalker
 
uint32_t size
 
std::vector< TlbEntrytlb
 
EntryList freeList
 
TlbEntryTrie trie
 
uint64_t lruSeq
 
AddrRange m5opRange
 
X86ISA::TLB::TlbStats stats
 
- Protected Attributes inherited from SimObject
const SimObjectParams * _params
 Cached copy of the object parameters. More...
 
- Protected Attributes inherited from EventManager
EventQueueeventq
 A pointer to this object's event queue. More...
 

Friends

class Walker
 

Additional Inherited Members

- Static Public Member Functions inherited from SimObject
static void serializeAll (CheckpointOut &cp)
 Serialize all SimObjects in the system. More...
 
static SimObjectfind (const char *name)
 Find the SimObject with the given name and return a pointer to it. More...
 
- Static Public Member Functions inherited from Serializable
static const std::string & currentSection ()
 Gets the fully-qualified name of the active section. More...
 
static void serializeAll (const std::string &cpt_dir)
 Serializes all the SimObjects. More...
 
static void unserializeGlobals (CheckpointIn &cp)
 

Detailed Description

Definition at line 57 of file tlb.hh.

Member Typedef Documentation

◆ EntryList

Definition at line 62 of file tlb.hh.

◆ Params

typedef X86TLBParams X86ISA::TLB::Params

Definition at line 68 of file tlb.hh.

Constructor & Destructor Documentation

◆ TLB()

X86ISA::TLB::TLB ( const Params p)

Definition at line 62 of file tlb.cc.

References fatal, freeList, X86ISA::p, X86ISA::Walker::setTLB(), size, tlb, walker, and X86ISA::x.

Member Function Documentation

◆ demapPage()

void X86ISA::TLB::demapPage ( Addr  va,
uint64_t  asn 
)
overridevirtual

◆ evictLRU()

void X86ISA::TLB::evictLRU ( )

Definition at line 79 of file tlb.cc.

References freeList, ArmISA::i, lruSeq, Trie< Key, Value >::remove(), size, tlb, and trie.

Referenced by insert().

◆ finalizePhysical()

Fault X86ISA::TLB::finalizePhysical ( const RequestPtr req,
ThreadContext tc,
Mode  mode 
) const
overridevirtual

Do post-translation physical address finalization.

Some addresses, for example requests going to the APIC, need post-translation updates. Such physical addresses are remapped into a "magic" part of the physical address space by this method.

Parameters
reqRequest to updated in-place.
tcThread context that created the request.
modeRequest type (read/write/execute).
Returns
A fault on failure, NoFault otherwise.

Implements BaseTLB.

Definition at line 258 of file tlb.cc.

References AddrRange::contains(), ThreadContext::contextId(), PseudoInst::decodeAddrOffset(), FullSystem, m5opRange, X86ISA::MISCREG_APIC_BASE, ArmISA::mode, NoFault, X86ISA::PageBytes, BaseTLB::Read, ThreadContext::readMiscRegNoEffect(), Packet::setLE(), AddrRange::start(), Request::STRICT_ORDER, Request::UNCACHEABLE, and X86ISA::x86LocalAPICAddress().

Referenced by translate().

◆ flushAll()

void X86ISA::TLB::flushAll ( )
overridevirtual

Remove all entries from the TLB.

Implements BaseTLB.

Definition at line 130 of file tlb.cc.

References DPRINTF, freeList, ArmISA::i, Trie< Key, Value >::remove(), size, tlb, and trie.

◆ flushNonGlobal()

void X86ISA::TLB::flushNonGlobal ( )

Definition at line 149 of file tlb.cc.

References DPRINTF, freeList, ArmISA::i, Trie< Key, Value >::remove(), size, tlb, and trie.

◆ getTableWalkerPort()

Port * X86ISA::TLB::getTableWalkerPort ( )
overridevirtual

Get the table walker port.

This is used for migrating port connections during a CPU takeOverFrom() call. For architectures that do not have a table walker, NULL is returned, hence the use of a pointer rather than a reference. For X86 this method will always return a valid port pointer.

Returns
A pointer to the walker port

Reimplemented from BaseTLB.

Definition at line 568 of file tlb.cc.

References X86ISA::Walker::getPort(), and walker.

◆ getWalker()

Walker * X86ISA::TLB::getWalker ( )

Definition at line 516 of file tlb.cc.

References walker.

◆ insert()

TlbEntry * X86ISA::TLB::insert ( Addr  vpn,
const TlbEntry entry 
)

◆ lookup()

TlbEntry * X86ISA::TLB::lookup ( Addr  va,
bool  update_lru = true 
)

Definition at line 121 of file tlb.cc.

References Trie< Key, Value >::lookup(), X86ISA::TlbEntry::lruSeq, nextSeq(), trie, and ArmISA::va.

Referenced by translate().

◆ lookupIt()

EntryList::iterator X86ISA::TLB::lookupIt ( Addr  va,
bool  update_lru = true 
)
protected

◆ nextSeq()

uint64_t X86ISA::TLB::nextSeq ( )
inline

Definition at line 124 of file tlb.hh.

References lruSeq.

Referenced by insert(), and lookup().

◆ serialize()

void X86ISA::TLB::serialize ( CheckpointOut cp) const
overridevirtual

Serialize an object.

Output an object's state into the current checkpoint section.

Parameters
cpCheckpoint state

Implements Serializable.

Definition at line 531 of file tlb.cc.

References csprintf(), freeList, lruSeq, SERIALIZE_SCALAR, size, tlb, and X86ISA::x.

◆ setConfigAddress()

void X86ISA::TLB::setConfigAddress ( uint32_t  addr)

Definition at line 143 of file tlb.cc.

References X86ISA::addr, and configAddress.

◆ takeOverFrom()

void X86ISA::TLB::takeOverFrom ( BaseTLB otlb)
inlineoverridevirtual

Take over from an old tlb context.

Implements BaseTLB.

Definition at line 71 of file tlb.hh.

◆ translate()

Fault X86ISA::TLB::translate ( const RequestPtr req,
ThreadContext tc,
Translation translation,
Mode  mode,
bool &  delayedResponse,
bool  timing 
)
protected

◆ translateAtomic()

Fault X86ISA::TLB::translateAtomic ( const RequestPtr req,
ThreadContext tc,
Mode  mode 
)
overridevirtual

Implements BaseTLB.

Definition at line 461 of file tlb.cc.

References ArmISA::mode, and translate().

◆ translateFunctional()

Fault X86ISA::TLB::translateFunctional ( const RequestPtr req,
ThreadContext tc,
Mode  mode 
)
overridevirtual

◆ translateInt()

Fault X86ISA::TLB::translateInt ( bool  read,
RequestPtr  req,
ThreadContext tc 
)
protected

◆ translateTiming()

void X86ISA::TLB::translateTiming ( const RequestPtr req,
ThreadContext tc,
Translation translation,
Mode  mode 
)
overridevirtual

◆ unserialize()

void X86ISA::TLB::unserialize ( CheckpointIn cp)
overridevirtual

Unserialize an object.

Read an object's state from the current checkpoint section.

Parameters
cpCheckpoint state

Implements Serializable.

Definition at line 546 of file tlb.cc.

References csprintf(), fatal, freeList, Trie< Key, Value >::insert(), X86ISA::TlbEntry::logBytes, lruSeq, Trie< Addr, X86ISA::TlbEntry >::MaxBits, size, trie, X86ISA::TlbEntry::trieHandle, UNSERIALIZE_SCALAR, Serializable::unserializeSection(), X86ISA::TlbEntry::vaddr, and X86ISA::x.

Friends And Related Function Documentation

◆ Walker

friend class Walker
friend

Definition at line 60 of file tlb.hh.

Member Data Documentation

◆ configAddress

uint32_t X86ISA::TLB::configAddress
protected

Definition at line 64 of file tlb.hh.

Referenced by setConfigAddress(), and translateInt().

◆ freeList

EntryList X86ISA::TLB::freeList
protected

Definition at line 97 of file tlb.hh.

Referenced by demapPage(), evictLRU(), flushAll(), flushNonGlobal(), insert(), serialize(), TLB(), and unserialize().

◆ lruSeq

uint64_t X86ISA::TLB::lruSeq
protected

Definition at line 100 of file tlb.hh.

Referenced by evictLRU(), nextSeq(), serialize(), and unserialize().

◆ m5opRange

AddrRange X86ISA::TLB::m5opRange
protected

Definition at line 102 of file tlb.hh.

Referenced by finalizePhysical().

◆ size

uint32_t X86ISA::TLB::size
protected

Definition at line 93 of file tlb.hh.

Referenced by evictLRU(), flushAll(), flushNonGlobal(), serialize(), TLB(), translate(), and unserialize().

◆ stats

X86ISA::TLB::TlbStats X86ISA::TLB::stats
protected

Referenced by translate().

◆ tlb

std::vector<TlbEntry> X86ISA::TLB::tlb
protected

Definition at line 95 of file tlb.hh.

Referenced by evictLRU(), flushAll(), flushNonGlobal(), serialize(), and TLB().

◆ trie

TlbEntryTrie X86ISA::TLB::trie
protected

Definition at line 99 of file tlb.hh.

Referenced by demapPage(), evictLRU(), flushAll(), flushNonGlobal(), insert(), lookup(), and unserialize().

◆ walker

Walker* X86ISA::TLB::walker
protected

Definition at line 81 of file tlb.hh.

Referenced by getTableWalkerPort(), getWalker(), TLB(), translate(), and translateFunctional().


The documentation for this class was generated from the following files:

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