gem5  v21.1.0.2
Public Member Functions | Protected Member Functions | List of all members
gem5::BaseTLB Class Referenceabstract

#include <tlb.hh>

Inheritance diagram for gem5::BaseTLB:
gem5::SimObject gem5::EventManager gem5::Serializable gem5::Drainable gem5::statistics::Group gem5::Named gem5::ArmISA::TLB gem5::Iris::TLB gem5::MipsISA::TLB gem5::PowerISA::TLB gem5::RiscvISA::TLB gem5::SparcISA::TLB gem5::X86ISA::TLB

Public Member Functions

virtual void demapPage (Addr vaddr, uint64_t asn)=0
 
virtual Fault translateAtomic (const RequestPtr &req, ThreadContext *tc, BaseMMU::Mode mode)=0
 
virtual void translateTiming (const RequestPtr &req, ThreadContext *tc, BaseMMU::Translation *translation, BaseMMU::Mode mode)=0
 
virtual Fault translateFunctional (const RequestPtr &req, ThreadContext *tc, BaseMMU::Mode mode)
 
virtual Fault finalizePhysical (const RequestPtr &req, ThreadContext *tc, BaseMMU::Mode mode) const =0
 Do post-translation physical address finalization. More...
 
virtual void flushAll ()=0
 Remove all entries from the TLB. More...
 
virtual void takeOverFrom (BaseTLB *otlb)=0
 Take over from an old tlb context. More...
 
virtual PortgetTableWalkerPort ()
 Get the table walker port if present. More...
 
void memInvalidate ()
 Invalidate the contents of memory buffers. More...
 
- Public Member Functions inherited from gem5::SimObject
const Paramsparams () const
 
 SimObject (const Params &p)
 
virtual ~SimObject ()
 
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 gem5::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 gem5::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 gem5::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 gem5::statistics::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 (statistics::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...
 
void mergeStatGroup (Group *block)
 Merge the contents (stats & children) of a block to this block. More...
 
 Group ()=delete
 
 Group (const Group &)=delete
 
Groupoperator= (const Group &)=delete
 
- Public Member Functions inherited from gem5::Named
 Named (const std::string &name_)
 
virtual ~Named ()=default
 
virtual std::string name () const
 

Protected Member Functions

 BaseTLB (const Params &p)
 
- Protected Member Functions inherited from gem5::Drainable
 Drainable ()
 
virtual ~Drainable ()
 
virtual void drainResume ()
 Resume execution after a successful drain. More...
 
void signalDrainDone () const
 Signal that an object is drained. More...
 

Additional Inherited Members

- Public Types inherited from gem5::SimObject
typedef SimObjectParams Params
 
- Static Public Member Functions inherited from gem5::SimObject
static void serializeAll (const std::string &cpt_dir)
 Create a checkpoint by serializing 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 void setSimObjectResolver (SimObjectResolver *resolver)
 There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...
 
static SimObjectResolvergetSimObjectResolver ()
 There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...
 
- Static Public Member Functions inherited from gem5::Serializable
static const std::string & currentSection ()
 Gets the fully-qualified name of the active section. More...
 
static void generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
 Generate a checkpoint file so that the serialization can be routed to it. More...
 
- Protected Attributes inherited from gem5::SimObject
const SimObjectParams & _params
 Cached copy of the object parameters. More...
 
- Protected Attributes inherited from gem5::EventManager
EventQueueeventq
 A pointer to this object's event queue. More...
 

Detailed Description

Definition at line 54 of file tlb.hh.

Constructor & Destructor Documentation

◆ BaseTLB()

gem5::BaseTLB::BaseTLB ( const Params p)
inlineprotected

Definition at line 57 of file tlb.hh.

Member Function Documentation

◆ demapPage()

virtual void gem5::BaseTLB::demapPage ( Addr  vaddr,
uint64_t  asn 
)
pure virtual

◆ finalizePhysical()

virtual Fault gem5::BaseTLB::finalizePhysical ( const RequestPtr req,
ThreadContext tc,
BaseMMU::Mode  mode 
) const
pure virtual

Do post-translation physical address finalization.

This method is used by some architectures that need post-translation massaging of physical addresses. For example, X86 uses this to remap physical addresses in the APIC range to a range of physical memory not normally available to real x86 implementations.

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

Implemented in gem5::ArmISA::TLB, gem5::SparcISA::TLB, gem5::X86ISA::TLB, gem5::PowerISA::TLB, gem5::RiscvISA::TLB, gem5::MipsISA::TLB, and gem5::Iris::TLB.

Referenced by gem5::BaseMMU::finalizePhysical().

◆ flushAll()

virtual void gem5::BaseTLB::flushAll ( )
pure virtual

◆ getTableWalkerPort()

virtual Port* gem5::BaseTLB::getTableWalkerPort ( )
inlinevirtual

Get the table walker port if present.

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.

Returns
A pointer to the walker port or NULL if not present

Reimplemented in gem5::ArmISA::TLB, gem5::X86ISA::TLB, and gem5::RiscvISA::TLB.

Definition at line 111 of file tlb.hh.

Referenced by gem5::BaseMMU::takeOverFrom().

◆ memInvalidate()

void gem5::BaseTLB::memInvalidate ( )
inlinevirtual

Invalidate the contents of memory buffers.

When the switching to hardware virtualized CPU models, we need to make sure that we don't have any cached state in the system that might become stale when we return. This method is used to flush all such state back to main memory.

@warn This does not cause any dirty state to be written back to memory.

Reimplemented from gem5::SimObject.

Definition at line 113 of file tlb.hh.

References flushAll().

◆ takeOverFrom()

virtual void gem5::BaseTLB::takeOverFrom ( BaseTLB otlb)
pure virtual

◆ translateAtomic()

virtual Fault gem5::BaseTLB::translateAtomic ( const RequestPtr req,
ThreadContext tc,
BaseMMU::Mode  mode 
)
pure virtual

◆ translateFunctional()

virtual Fault gem5::BaseTLB::translateFunctional ( const RequestPtr req,
ThreadContext tc,
BaseMMU::Mode  mode 
)
inlinevirtual

◆ translateTiming()

virtual void gem5::BaseTLB::translateTiming ( const RequestPtr req,
ThreadContext tc,
BaseMMU::Translation translation,
BaseMMU::Mode  mode 
)
pure virtual

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

Generated on Tue Sep 21 2021 12:27:20 for gem5 by doxygen 1.8.17