gem5  v21.1.0.2
Classes | Public Types | Public Member Functions | Static Public Member Functions | Protected Attributes | Static Protected Attributes | Private Member Functions | Static Private Member Functions | Private Attributes | List of all members
gem5::ArmISA::TableWalker Class Reference

#include <table_walker.hh>

Inheritance diagram for gem5::ArmISA::TableWalker:
gem5::ClockedObject gem5::SimObject gem5::Clocked gem5::EventManager gem5::Serializable gem5::Drainable gem5::statistics::Group gem5::Named

Classes

class  DescriptorBase
 
class  L1Descriptor
 
class  L2Descriptor
 Level 2 page table descriptor. More...
 
class  LongDescriptor
 Long-descriptor format (LPAE) More...
 
class  Port
 
class  Stage2Walk
 This translation class is used to trigger the data fetch once a timing translation returns the translated physical address. More...
 
class  TableWalkerState
 
struct  TableWalkerStats
 Statistics. More...
 
class  WalkerState
 

Public Types

enum  GrainSize { Grain4KB = 12, Grain16KB = 14, Grain64KB = 16, ReservedGrain = 0 }
 
- Public Types inherited from gem5::ClockedObject
using Params = ClockedObjectParams
 Parameters of ClockedObject. More...
 
- Public Types inherited from gem5::SimObject
typedef SimObjectParams Params
 

Public Member Functions

Fault readDataUntimed (ThreadContext *tc, Addr vaddr, Addr desc_addr, uint8_t *data, int num_bytes, Request::Flags flags, bool functional)
 
void readDataTimed (ThreadContext *tc, Addr desc_addr, Stage2Walk *translation, int num_bytes, Request::Flags flags)
 
 PARAMS (ArmTableWalker)
 
 TableWalker (const Params &p)
 
virtual ~TableWalker ()
 
bool haveLPAE () const
 
bool haveVirtualization () const
 
bool haveLargeAsid64 () const
 
uint8_t physAddrRange () const
 
void completeDrain ()
 Checks if all state is cleared and if so, completes drain. More...
 
DrainState drain () override
 Draining is the process of clearing out the states of SimObjects.These are the SimObjects that are partially executed or are partially in flight. More...
 
void drainResume () override
 Resume execution after a successful drain. More...
 
gem5::PortgetPort (const std::string &if_name, PortID idx=InvalidPortID) override
 Get a port with a given name and index. More...
 
PortgetTableWalkerPort ()
 
Fault walk (const RequestPtr &req, ThreadContext *tc, uint16_t asid, vmid_t _vmid, bool _isHyp, BaseMMU::Mode mode, BaseMMU::Translation *_trans, bool timing, bool functional, bool secure, TLB::ArmTranslationType tranType, bool _stage2Req)
 
void setMmu (MMU *_mmu)
 
void setTlb (TLB *_tlb)
 
void setPort (Port *_port)
 
TLBgetTlb ()
 
void memAttrs (ThreadContext *tc, TlbEntry &te, SCTLR sctlr, uint8_t texcb, bool s)
 
void memAttrsLPAE (ThreadContext *tc, TlbEntry &te, LongDescriptor &lDescriptor)
 
void memAttrsAArch64 (ThreadContext *tc, TlbEntry &te, LongDescriptor &lDescriptor)
 
- Public Member Functions inherited from gem5::ClockedObject
 ClockedObject (const ClockedObjectParams &p)
 
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::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 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...
 
virtual void memInvalidate ()
 Invalidate the contents of memory buffers. 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
 
- Public Member Functions inherited from gem5::Clocked
void updateClockPeriod ()
 Update the tick to the current tick. More...
 
Tick clockEdge (Cycles cycles=Cycles(0)) const
 Determine the tick when a cycle begins, by default the current one, but the argument also enables the caller to determine a future cycle. More...
 
Cycles curCycle () const
 Determine the current cycle, corresponding to a tick aligned to a clock edge. More...
 
Tick nextCycle () const
 Based on the clock of the object, determine the start tick of the first cycle that is at least one cycle in the future. More...
 
uint64_t frequency () const
 
Tick clockPeriod () const
 
double voltage () const
 
Cycles ticksToCycles (Tick t) const
 
Tick cyclesToTicks (Cycles c) const
 

Static Public Member Functions

static LookupLevel toLookupLevel (uint8_t lookup_level_as_int)
 
- 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

std::list< WalkerState * > stateQueues [MAX_LOOKUP_LEVELS]
 Queues of requests for all the different lookup levels. More...
 
std::list< WalkerState * > pendingQueue
 Queue of requests that have passed are waiting because the walker is currently busy. More...
 
MMUmmu
 The MMU to forward second stage look upts to. More...
 
RequestorID requestorId
 Requestor id assigned by the MMU. More...
 
Portport
 Port shared by the two table walkers. More...
 
const bool isStage2
 Indicates whether this table walker is part of the stage 2 mmu. More...
 
TLBtlb
 TLB that is initiating these table walks. More...
 
SCTLR sctlr
 Cached copy of the sctlr as it existed when translation began. More...
 
WalkerStatecurrState
 
bool pending
 If a timing translation is currently in progress. More...
 
unsigned numSquashable
 The number of walks belonging to squashed instructions that can be removed from the pendingQueue per cycle. More...
 
bool haveSecurity
 Cached copies of system-level properties. More...
 
bool _haveLPAE
 
bool _haveVirtualization
 
uint8_t _physAddrRange
 
bool _haveLargeAsid64
 
gem5::ArmISA::TableWalker::TableWalkerStats stats
 
unsigned pendingReqs
 
Tick pendingChangeTick
 
- 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...
 

Static Protected Attributes

static const unsigned REQUESTED = 0
 
static const unsigned COMPLETED = 1
 

Private Member Functions

void doL1Descriptor ()
 
void doL1DescriptorWrapper ()
 
void doL2Descriptor ()
 
void doL2DescriptorWrapper ()
 
void doLongDescriptor ()
 
void doL0LongDescriptorWrapper ()
 
void doL1LongDescriptorWrapper ()
 
void doL2LongDescriptorWrapper ()
 
void doL3LongDescriptorWrapper ()
 
void doLongDescriptorWrapper (LookupLevel curr_lookup_level)
 
bool fetchDescriptor (Addr descAddr, uint8_t *data, int numBytes, Request::Flags flags, int queueIndex, Event *event, void(TableWalker::*doDescriptor)())
 
Fault generateLongDescFault (ArmFault::FaultSource src)
 
void insertTableEntry (DescriptorBase &descriptor, bool longDescriptor)
 
Fault processWalk ()
 
Fault processWalkLPAE ()
 
bool checkVAddrSizeFaultAArch64 (Addr addr, int top_bit, GrainSize granule, int tsz, bool low_range)
 
bool checkAddrSizeFaultAArch64 (Addr addr, int pa_range)
 Returns true if the address exceeds the range permitted by the system-wide setting or by the TCR_ELx IPS/PS setting. More...
 
Fault processWalkAArch64 ()
 
void processWalkWrapper ()
 
void nextWalk (ThreadContext *tc)
 
void pendingChange ()
 
Fault testWalk (Addr pa, Addr size, TlbEntry::DomainType domain, LookupLevel lookup_level)
 

Static Private Member Functions

static uint8_t pageSizeNtoStatBin (uint8_t N)
 

Private Attributes

EventFunctionWrapper doL1DescEvent
 
EventFunctionWrapper doL2DescEvent
 
EventFunctionWrapper doL0LongDescEvent
 
EventFunctionWrapper doL1LongDescEvent
 
EventFunctionWrapper doL2LongDescEvent
 
EventFunctionWrapper doL3LongDescEvent
 
EventLongDescEventByLevel [4]
 
EventFunctionWrapper doProcessEvent
 

Additional Inherited Members

- Public Attributes inherited from gem5::ClockedObject
PowerStatepowerState
 
- Protected Member Functions inherited from gem5::Drainable
 Drainable ()
 
virtual ~Drainable ()
 
void signalDrainDone () const
 Signal that an object is drained. More...
 
- Protected Member Functions inherited from gem5::Clocked
 Clocked (ClockDomain &clk_domain)
 Create a clocked object and set the clock domain based on the parameters. More...
 
 Clocked (Clocked &)=delete
 
Clockedoperator= (Clocked &)=delete
 
virtual ~Clocked ()
 Virtual destructor due to inheritance. More...
 
void resetClock () const
 Reset the object's clock using the current global tick value. More...
 
virtual void clockPeriodUpdated ()
 A hook subclasses can implement so they can do any extra work that's needed when the clock rate is changed. More...
 

Detailed Description

Definition at line 66 of file table_walker.hh.

Member Enumeration Documentation

◆ GrainSize

Enumerator
Grain4KB 
Grain16KB 
Grain64KB 
ReservedGrain 

Definition at line 376 of file table_walker.hh.

Constructor & Destructor Documentation

◆ TableWalker()

gem5::TableWalker::TableWalker ( const Params p)

Definition at line 61 of file table_walker.cc.

References doL1DescriptorWrapper().

◆ ~TableWalker()

gem5::TableWalker::~TableWalker ( )
virtual

Definition at line 100 of file table_walker.cc.

Member Function Documentation

◆ checkAddrSizeFaultAArch64()

bool gem5::TableWalker::checkAddrSizeFaultAArch64 ( Addr  addr,
int  pa_range 
)
private

Returns true if the address exceeds the range permitted by the system-wide setting or by the TCR_ELx IPS/PS setting.

Definition at line 861 of file table_walker.cc.

References _physAddrRange, gem5::X86ISA::addr, and gem5::bits().

Referenced by doLongDescriptor().

◆ checkVAddrSizeFaultAArch64()

bool gem5::TableWalker::checkVAddrSizeFaultAArch64 ( Addr  addr,
int  top_bit,
GrainSize  granule,
int  tsz,
bool  low_range 
)
private

◆ completeDrain()

void gem5::TableWalker::completeDrain ( )

Checks if all state is cleared and if so, completes drain.

Definition at line 238 of file table_walker.cc.

References DPRINTF, gem5::Draining, gem5::Drainable::drainState(), gem5::ArmISA::L0, gem5::ArmISA::L1, gem5::ArmISA::L2, gem5::ArmISA::L3, pendingQueue, gem5::Drainable::signalDrainDone(), and stateQueues.

Referenced by nextWalk().

◆ doL0LongDescriptorWrapper()

void gem5::TableWalker::doL0LongDescriptorWrapper ( )
private

Definition at line 2117 of file table_walker.cc.

References doLongDescriptorWrapper(), and gem5::ArmISA::L0.

◆ doL1Descriptor()

void gem5::TableWalker::doL1Descriptor ( )
private
Todo:
: check sctlr.ha (bit[17]) if Hardware Access Flag is enabled if set, do l1.Desc.setAp0() instead of generating AccessFlag0

Definition at line 1676 of file table_walker.cc.

References gem5::ArmISA::ArmFault::AccessFlagLL, gem5::ArmISA::TableWalker::L1Descriptor::ap(), gem5::bits(), gem5::ArmISA::byteOrder(), currState, gem5::ArmISA::TableWalker::L1Descriptor::data, gem5::ArmISA::TableWalker::L2Descriptor::data, gem5::ArmISA::TableWalker::WalkerState::delayed, doL2DescEvent, doL2Descriptor(), gem5::ArmISA::TableWalker::L1Descriptor::domain(), DPRINTF, gem5::ArmISA::TableWalker::WalkerState::fault, fetchDescriptor(), gem5::htog(), gem5::ArmISA::TableWalker::L1Descriptor::Ignore, insertTableEntry(), gem5::ArmISA::TableWalker::WalkerState::isFetch, gem5::ArmISA::TableWalker::WalkerState::isSecure, isStage2, gem5::ArmISA::TableWalker::WalkerState::isUncacheable, gem5::ArmISA::TableWalker::WalkerState::isWrite, gem5::ArmISA::L1, gem5::ArmISA::TableWalker::WalkerState::l1Desc, gem5::ArmISA::L2, gem5::ArmISA::TableWalker::L1Descriptor::l2Addr(), gem5::ArmISA::TableWalker::WalkerState::l2Desc, gem5::ArmISA::TlbEntry::NoAccess, gem5::NoFault, gem5::ArmISA::TableWalker::L1Descriptor::PageTable, panic, gem5::Request::PT_WALK, gem5::ArmISA::TableWalker::WalkerState::req, gem5::ArmISA::TableWalker::L1Descriptor::Reserved, gem5::ArmISA::TableWalker::WalkerState::sctlr, gem5::ArmISA::TableWalker::L1Descriptor::Section, gem5::Request::SECURE, gem5::Flags< T >::set(), gem5::ArmISA::TableWalker::L1Descriptor::supersection(), gem5::ArmISA::TableWalker::WalkerState::tc, gem5::ArmISA::te, testWalk(), gem5::ArmISA::TableWalker::WalkerState::timing, gem5::ArmISA::ArmFault::TranslationLL, gem5::ArmISA::TableWalker::L1Descriptor::type(), gem5::Request::UNCACHEABLE, gem5::ArmISA::TableWalker::WalkerState::vaddr, gem5::ArmISA::TableWalker::WalkerState::vaddr_tainted, and gem5::ArmISA::ArmFault::VmsaTran.

Referenced by doL1DescriptorWrapper(), and processWalk().

◆ doL1DescriptorWrapper()

void gem5::TableWalker::doL1DescriptorWrapper ( )
private

◆ doL1LongDescriptorWrapper()

void gem5::TableWalker::doL1LongDescriptorWrapper ( )
private

Definition at line 2123 of file table_walker.cc.

References doLongDescriptorWrapper(), and gem5::ArmISA::L1.

◆ doL2Descriptor()

void gem5::TableWalker::doL2Descriptor ( )
private

◆ doL2DescriptorWrapper()

void gem5::TableWalker::doL2DescriptorWrapper ( )
private

◆ doL2LongDescriptorWrapper()

void gem5::TableWalker::doL2LongDescriptorWrapper ( )
private

Definition at line 2129 of file table_walker.cc.

References doLongDescriptorWrapper(), and gem5::ArmISA::L2.

◆ doL3LongDescriptorWrapper()

void gem5::TableWalker::doL3LongDescriptorWrapper ( )
private

Definition at line 2135 of file table_walker.cc.

References doLongDescriptorWrapper(), and gem5::ArmISA::L3.

◆ doLongDescriptor()

void gem5::TableWalker::doLongDescriptor ( )
private

Definition at line 1801 of file table_walker.cc.

References gem5::ArmISA::TableWalker::WalkerState::aarch64, gem5::ArmISA::ArmFault::AccessFlagLL, gem5::ArmISA::ArmFault::AddressSizeLL, gem5::ArmISA::TableWalker::LongDescriptor::af(), gem5::ArmISA::TableWalker::LongDescriptor::ap(), gem5::ArmISA::TableWalker::LongDescriptor::Block, gem5::ArmISA::byteOrder(), checkAddrSizeFaultAArch64(), gem5::ArmISA::TlbEntry::Client, currState, gem5::ArmISA::TableWalker::LongDescriptor::data, gem5::ArmISA::TableWalker::WalkerState::delayed, DPRINTF, gem5::MipsISA::event, gem5::ArmISA::TableWalker::WalkerState::fault, gem5::ArmISA::ArmFault::FaultSourceInvalid, fetchDescriptor(), generateLongDescFault(), gem5::ArmISA::TableWalker::WalkerState::hpd, gem5::htog(), insertTableEntry(), gem5::ArmISA::TableWalker::LongDescriptor::Invalid, gem5::ArmISA::TableWalker::WalkerState::isUncacheable, gem5::X86ISA::L, gem5::ArmISA::L1, gem5::ArmISA::L2, gem5::ArmISA::L3, gem5::ArmISA::TableWalker::WalkerState::longDesc, LongDescEventByLevel, gem5::ArmISA::TableWalker::DescriptorBase::lookupLevel, gem5::ArmISA::TableWalker::LongDescriptor::nextDescAddr(), gem5::NoFault, gem5::ArmISA::TableWalker::LongDescriptor::paddr(), gem5::ArmISA::TableWalker::LongDescriptor::Page, panic, gem5::ArmISA::TableWalker::WalkerState::physAddrRange, gem5::Request::PT_WALK, gem5::ArmISA::TableWalker::LongDescriptor::pxn(), gem5::ArmISA::TableWalker::LongDescriptor::pxnTable(), gem5::ArmISA::TableWalker::WalkerState::pxnTable, gem5::ArmISA::TableWalker::WalkerState::req, gem5::ArmISA::TableWalker::LongDescriptor::rwTable(), gem5::ArmISA::TableWalker::WalkerState::rwTable, gem5::ArmISA::TableWalker::WalkerState::sctlr, gem5::Request::SECURE, gem5::ArmISA::TableWalker::WalkerState::secureLookup, gem5::ArmISA::TableWalker::LongDescriptor::secureTable(), gem5::Flags< T >::set(), gem5::ArmISA::TableWalker::LongDescriptor::Table, gem5::ArmISA::TableWalker::WalkerState::tc, gem5::ArmISA::te, testWalk(), gem5::ArmISA::TableWalker::WalkerState::timing, toLookupLevel(), gem5::ArmISA::ArmFault::TranslationLL, gem5::ArmISA::TableWalker::LongDescriptor::type(), gem5::Request::UNCACHEABLE, gem5::ArmISA::TableWalker::LongDescriptor::userTable(), gem5::ArmISA::TableWalker::WalkerState::userTable, gem5::ArmISA::TableWalker::WalkerState::vaddr, gem5::ArmISA::TableWalker::WalkerState::vaddr_tainted, gem5::ArmISA::TableWalker::LongDescriptor::xn(), gem5::ArmISA::TableWalker::LongDescriptor::xnTable(), and gem5::ArmISA::TableWalker::WalkerState::xnTable.

Referenced by doLongDescriptorWrapper(), and processWalkLPAE().

◆ doLongDescriptorWrapper()

void gem5::TableWalker::doLongDescriptorWrapper ( LookupLevel  curr_lookup_level)
private

◆ drain()

DrainState gem5::TableWalker::drain ( )
overridevirtual

Draining is the process of clearing out the states of SimObjects.These are the SimObjects that are partially executed or are partially in flight.

Draining is mostly used before forking and creating a check point.

This function notifies an object that it needs to drain its state.

If the object does not need further simulation to drain internal buffers, it returns DrainState::Drained and automatically switches to the Drained state. If the object needs more simulation, it returns DrainState::Draining and automatically enters the Draining state. Other return values are invalid.

Note
An object that has entered the Drained state can be disturbed by other objects in the system and consequently stop being drained. These perturbations are not visible in the drain state. The simulator therefore repeats the draining process until all objects return DrainState::Drained on the first call to drain().
Returns
DrainState::Drained if the object is drained at this point in time, DrainState::Draining if it needs further simulation.

Implements gem5::Drainable.

Definition at line 251 of file table_walker.cc.

References DPRINTF, gem5::Drained, gem5::Draining, gem5::ArmISA::i, gem5::ArmISA::MAX_LOOKUP_LEVELS, pendingQueue, and stateQueues.

◆ drainResume()

void gem5::TableWalker::drainResume ( )
overridevirtual

Resume execution after a successful drain.

Reimplemented from gem5::Drainable.

Definition at line 272 of file table_walker.cc.

References currState, gem5::SimObject::params(), and pendingChange().

◆ fetchDescriptor()

bool gem5::TableWalker::fetchDescriptor ( Addr  descAddr,
uint8_t *  data,
int  numBytes,
Request::Flags  flags,
int  queueIndex,
Event event,
void(TableWalker::*)()  doDescriptor 
)
private

◆ generateLongDescFault()

Fault gem5::TableWalker::generateLongDescFault ( ArmFault::FaultSource  src)
private

◆ getPort()

Port & gem5::TableWalker::getPort ( const std::string &  if_name,
PortID  idx = InvalidPortID 
)
overridevirtual

Get a port with a given name and index.

This is used at binding time and returns a reference to a protocol-agnostic port.

gem5 has a request and response port interface. All memory objects are connected together via ports. These ports provide a rigid interface between these memory objects. These ports implement three different memory system modes: timing, atomic, and functional. The most important mode is the timing mode and here timing mode is used for conducting cycle-level timing experiments. The other modes are only used in special circumstances and should not be used to conduct cycle-level timing experiments. The other modes are only used in special circumstances. These ports allow SimObjects to communicate with each other.

Parameters
if_namePort name
idxIndex in the case of a VectorPort
Returns
A reference to the given port

Reimplemented from gem5::SimObject.

Definition at line 112 of file table_walker.cc.

References gem5::SimObject::getPort(), and port.

Referenced by getTableWalkerPort().

◆ getTableWalkerPort()

TableWalker::Port & gem5::TableWalker::getTableWalkerPort ( )

Definition at line 106 of file table_walker.cc.

References getPort().

◆ getTlb()

TLB* gem5::ArmISA::TableWalker::getTlb ( )
inline

Definition at line 1041 of file table_walker.hh.

References tlb.

◆ haveLargeAsid64()

bool gem5::ArmISA::TableWalker::haveLargeAsid64 ( ) const
inline

Definition at line 1020 of file table_walker.hh.

References _haveLargeAsid64.

◆ haveLPAE()

bool gem5::ArmISA::TableWalker::haveLPAE ( ) const
inline

Definition at line 1018 of file table_walker.hh.

References _haveLPAE.

◆ haveVirtualization()

bool gem5::ArmISA::TableWalker::haveVirtualization ( ) const
inline

Definition at line 1019 of file table_walker.hh.

References _haveVirtualization.

◆ insertTableEntry()

void gem5::TableWalker::insertTableEntry ( DescriptorBase descriptor,
bool  longDescriptor 
)
private

Definition at line 2274 of file table_walker.cc.

References gem5::ArmISA::TableWalker::WalkerState::aarch64, gem5::ArmISA::TableWalker::DescriptorBase::ap(), gem5::ArmISA::TableWalker::LongDescriptor::ap(), gem5::ArmISA::TableWalker::WalkerState::asid, COMPLETED, currState, gem5::ArmISA::TableWalker::DescriptorBase::dbgHeader(), gem5::ArmISA::TableWalker::DescriptorBase::domain(), DPRINTF, gem5::ArmISA::TableWalker::WalkerState::el, gem5::ArmISA::EL1, gem5::ArmISA::TableWalker::DescriptorBase::getRawData(), gem5::ArmISA::TableWalker::DescriptorBase::global(), haveSecurity, gem5::ArmISA::TLB::insert(), gem5::ArmISA::TableWalker::WalkerState::isFetch, gem5::ArmISA::TableWalker::WalkerState::isHyp, gem5::ArmISA::TableWalker::WalkerState::isSecure, isStage2, gem5::ArmISA::TableWalker::DescriptorBase::lookupLevel, memAttrs(), memAttrsAArch64(), memAttrsLPAE(), gem5::ArmISA::TableWalker::DescriptorBase::offsetBits(), pageSizeNtoStatBin(), gem5::ArmISA::TableWalker::TableWalkerStats::pageSizes, gem5::ArmISA::TableWalker::DescriptorBase::pfn(), gem5::ArmISA::TableWalker::LongDescriptor::pxn(), gem5::ArmISA::TableWalker::WalkerState::pxnTable, gem5::ArmISA::TableWalker::WalkerState::req, gem5::ArmISA::TableWalker::TableWalkerStats::requestOrigin, gem5::ArmISA::TableWalker::WalkerState::rwTable, gem5::ArmISA::TableWalker::WalkerState::sctlr, gem5::ArmISA::TableWalker::DescriptorBase::secure(), gem5::ArmISA::TableWalker::DescriptorBase::shareable(), stats, gem5::ArmISA::TableWalker::WalkerState::tc, gem5::ArmISA::te, gem5::ArmISA::TableWalker::DescriptorBase::texcb(), gem5::ArmISA::TableWalker::WalkerState::timing, tlb, gem5::ArmISA::TableWalker::WalkerState::userTable, gem5::ArmISA::TableWalker::WalkerState::vaddr, gem5::ArmISA::TableWalker::WalkerState::vmid, gem5::ArmISA::TableWalker::DescriptorBase::xn(), and gem5::ArmISA::TableWalker::WalkerState::xnTable.

Referenced by doL1Descriptor(), doL2Descriptor(), and doLongDescriptor().

◆ memAttrs()

void gem5::TableWalker::memAttrs ( ThreadContext tc,
TlbEntry te,
SCTLR  sctlr,
uint8_t  texcb,
bool  s 
)

◆ memAttrsAArch64()

void gem5::TableWalker::memAttrsAArch64 ( ThreadContext tc,
TlbEntry te,
LongDescriptor lDescriptor 
)

◆ memAttrsLPAE()

void gem5::TableWalker::memAttrsLPAE ( ThreadContext tc,
TlbEntry te,
LongDescriptor lDescriptor 
)

◆ nextWalk()

void gem5::TableWalker::nextWalk ( ThreadContext tc)
private

◆ pageSizeNtoStatBin()

uint8_t gem5::TableWalker::pageSizeNtoStatBin ( uint8_t  N)
staticprivate

Definition at line 2391 of file table_walker.cc.

References panic.

Referenced by insertTableEntry().

◆ PARAMS()

gem5::ArmISA::TableWalker::PARAMS ( ArmTableWalker  )

◆ pendingChange()

void gem5::TableWalker::pendingChange ( )
private

◆ physAddrRange()

uint8_t gem5::ArmISA::TableWalker::physAddrRange ( ) const
inline

Definition at line 1021 of file table_walker.hh.

References _physAddrRange.

◆ processWalk()

Fault gem5::TableWalker::processWalk ( )
private

Definition at line 563 of file table_walker.cc.

References gem5::bits(), currState, gem5::curTick(), gem5::ArmISA::TableWalker::L1Descriptor::data, doL1DescEvent, doL1Descriptor(), DPRINTF, gem5::ArmISA::f, gem5::ArmISA::TableWalker::WalkerState::fault, fetchDescriptor(), haveSecurity, gem5::ArmISA::TableWalker::WalkerState::isFetch, gem5::ArmISA::TableWalker::WalkerState::isSecure, isStage2, gem5::ArmISA::TableWalker::WalkerState::isUncacheable, gem5::ArmISA::TableWalker::WalkerState::isWrite, gem5::ArmISA::L1, gem5::ArmISA::TableWalker::WalkerState::l1Desc, gem5::mbits(), gem5::ArmISA::MISCREG_TTBR0, gem5::ArmISA::MISCREG_TTBR1, nextWalk(), gem5::ArmISA::TlbEntry::NoAccess, pending, gem5::Request::PT_WALK, gem5::ThreadContext::readMiscReg(), gem5::ArmISA::TableWalker::WalkerState::req, gem5::statistics::DistBase< Derived, Stor >::sample(), gem5::ArmISA::TableWalker::WalkerState::sctlr, gem5::Request::SECURE, gem5::Flags< T >::set(), gem5::ArmISA::snsBankedIndex(), gem5::ArmISA::TableWalker::WalkerState::startTime, stats, gem5::ArmISA::TableWalker::WalkerState::tc, testWalk(), gem5::ArmISA::TableWalker::WalkerState::timing, gem5::ArmISA::ArmFault::TranslationLL, gem5::ArmISA::TableWalker::WalkerState::ttbcr, gem5::Request::UNCACHEABLE, gem5::ArmISA::TableWalker::WalkerState::vaddr, gem5::ArmISA::TableWalker::WalkerState::vaddr_tainted, gem5::ArmISA::ArmFault::VmsaTran, and gem5::ArmISA::TableWalker::TableWalkerStats::walkWaitTime.

Referenced by processWalkWrapper(), and walk().

◆ processWalkAArch64()

Fault gem5::TableWalker::processWalkAArch64 ( )
private

Definition at line 868 of file table_walker.cc.

References gem5::ArmISA::TableWalker::WalkerState::aarch64, gem5::bits(), checkVAddrSizeFaultAArch64(), gem5::ArmISA::computeAddrTop(), currState, gem5::curTick(), DPRINTF, gem5::ArmISA::TableWalker::WalkerState::el, gem5::ArmISA::EL0, gem5::ArmISA::EL1, gem5::ArmISA::EL2, gem5::ArmISA::EL3, gem5::BaseMMU::Execute, Grain16KB, Grain4KB, Grain64KB, gem5::ArmISA::HaveVirtHostExt(), gem5::ArmISA::TableWalker::WalkerState::hcr, gem5::ArmISA::TableWalker::WalkerState::hpd, isStage2, gem5::ArmISA::TableWalker::WalkerState::isUncacheable, gem5::ArmISA::L0, gem5::ArmISA::L1, gem5::ArmISA::L2, gem5::ArmISA::L3, gem5::ArmISA::MAX_LOOKUP_LEVELS, gem5::ArmISA::MISCREG_TTBR0_EL1, gem5::ArmISA::MISCREG_TTBR0_EL2, gem5::ArmISA::MISCREG_TTBR0_EL3, gem5::ArmISA::MISCREG_TTBR1_EL1, gem5::ArmISA::MISCREG_TTBR1_EL2, gem5::ArmISA::MISCREG_VSTTBR_EL2, gem5::ArmISA::MISCREG_VTTBR_EL2, gem5::ArmISA::TableWalker::WalkerState::mode, panic_if, gem5::ArmISA::ps, gem5::ThreadContext::readMiscReg(), ReservedGrain, gem5::statistics::DistBase< Derived, Stor >::sample(), gem5::ArmISA::TableWalker::WalkerState::secureLookup, gem5::ArmISA::TableWalker::WalkerState::startTime, stats, gem5::ArmISA::TableWalker::WalkerState::tc, gem5::ArmISA::TableWalker::WalkerState::tcr, gem5::ArmISA::TableWalker::WalkerState::vaddr, gem5::ArmISA::TableWalker::WalkerState::vaddr_tainted, gem5::ArmISA::TableWalker::WalkerState::vtcr, and gem5::ArmISA::TableWalker::TableWalkerStats::walkWaitTime.

Referenced by processWalkWrapper(), and walk().

◆ processWalkLPAE()

Fault gem5::TableWalker::processWalkLPAE ( )
private

Definition at line 672 of file table_walker.cc.

References gem5::ArmISA::TableWalker::LongDescriptor::aarch64, gem5::bits(), currState, gem5::curTick(), gem5::ArmISA::TableWalker::LongDescriptor::data, doLongDescriptor(), DPRINTF, gem5::ArmISA::f, gem5::ArmISA::TableWalker::WalkerState::fault, fetchDescriptor(), Grain4KB, gem5::ArmISA::TableWalker::LongDescriptor::grainSize, gem5::ArmISA::TableWalker::WalkerState::htcr, gem5::ArmISA::TableWalker::WalkerState::isFetch, gem5::ArmISA::TableWalker::WalkerState::isHyp, gem5::ArmISA::TableWalker::WalkerState::isSecure, isStage2, gem5::ArmISA::TableWalker::WalkerState::isUncacheable, gem5::ArmISA::TableWalker::WalkerState::isWrite, gem5::ArmISA::L1, gem5::ArmISA::L2, gem5::ArmISA::TableWalker::WalkerState::longDesc, LongDescEventByLevel, gem5::ArmISA::longDescFormatInUse(), gem5::ArmISA::TableWalker::DescriptorBase::lookupLevel, gem5::ArmISA::ArmFault::LpaeTran, gem5::mbits(), gem5::ArmISA::MISCREG_HTTBR, gem5::ArmISA::MISCREG_TTBR0, gem5::ArmISA::MISCREG_TTBR1, gem5::ArmISA::MISCREG_VTTBR, gem5::ArmISA::n, nextWalk(), gem5::ArmISA::TlbEntry::NoAccess, pending, gem5::Request::PT_WALK, gem5::ThreadContext::readMiscReg(), gem5::ArmISA::TableWalker::WalkerState::req, gem5::statistics::DistBase< Derived, Stor >::sample(), gem5::ArmISA::TableWalker::WalkerState::sctlr, gem5::Request::SECURE, gem5::Flags< T >::set(), gem5::ArmISA::snsBankedIndex(), gem5::ArmISA::TableWalker::WalkerState::startTime, stats, gem5::ArmISA::TableWalker::WalkerState::tc, testWalk(), gem5::ArmISA::TableWalker::WalkerState::timing, gem5::ArmISA::ArmFault::TranslationLL, gem5::ArmISA::TableWalker::WalkerState::ttbcr, gem5::Request::UNCACHEABLE, gem5::ArmISA::TableWalker::WalkerState::vaddr, gem5::ArmISA::TableWalker::WalkerState::vaddr_tainted, gem5::ArmISA::TableWalker::WalkerState::vtcr, and gem5::ArmISA::TableWalker::TableWalkerStats::walkWaitTime.

Referenced by processWalkWrapper(), and walk().

◆ processWalkWrapper()

void gem5::TableWalker::processWalkWrapper ( )
private

◆ readDataTimed()

void gem5::TableWalker::readDataTimed ( ThreadContext tc,
Addr  desc_addr,
Stage2Walk translation,
int  num_bytes,
Request::Flags  flags 
)

◆ readDataUntimed()

Fault gem5::TableWalker::readDataUntimed ( ThreadContext tc,
Addr  vaddr,
Addr  desc_addr,
uint8_t *  data,
int  num_bytes,
Request::Flags  flags,
bool  functional 
)

◆ setMmu()

void gem5::ArmISA::TableWalker::setMmu ( MMU _mmu)
inline

Definition at line 1038 of file table_walker.hh.

References mmu.

Referenced by gem5::ArmISA::MMU::init().

◆ setPort()

void gem5::ArmISA::TableWalker::setPort ( Port _port)
inline

Definition at line 1040 of file table_walker.hh.

References port.

Referenced by gem5::ArmISA::MMU::MMU().

◆ setTlb()

void gem5::ArmISA::TableWalker::setTlb ( TLB _tlb)
inline

Definition at line 1039 of file table_walker.hh.

References tlb.

Referenced by gem5::ArmISA::TLB::setTableWalker().

◆ testWalk()

Fault gem5::TableWalker::testWalk ( Addr  pa,
Addr  size,
TlbEntry::DomainType  domain,
LookupLevel  lookup_level 
)
private

◆ toLookupLevel()

LookupLevel gem5::TableWalker::toLookupLevel ( uint8_t  lookup_level_as_int)
static

Definition at line 2349 of file table_walker.cc.

References gem5::ArmISA::L1, gem5::ArmISA::L2, gem5::ArmISA::L3, and panic.

Referenced by doLongDescriptor().

◆ walk()

Fault gem5::TableWalker::walk ( const RequestPtr req,
ThreadContext tc,
uint16_t  asid,
vmid_t  _vmid,
bool  _isHyp,
BaseMMU::Mode  mode,
BaseMMU::Translation _trans,
bool  timing,
bool  functional,
bool  secure,
TLB::ArmTranslationType  tranType,
bool  _stage2Req 
)
Todo:
These should be cached or grabbed from cached copies in the TLB, all these miscreg reads are expensive

Definition at line 282 of file table_walker.cc.

References _haveVirtualization, _physAddrRange, gem5::ArmISA::TableWalker::WalkerState::aarch64, gem5::ArmISA::TableWalker::WalkerState::asid, currState, gem5::curTick(), DPRINTF, gem5::ArmISA::TableWalker::WalkerState::el, gem5::ArmISA::EL0, gem5::ArmISA::EL1, gem5::ArmISA::EL2, gem5::ArmISA::EL3, gem5::ArmISA::ELIs64(), gem5::BaseMMU::Execute, gem5::ArmISA::TableWalker::WalkerState::fault, gem5::ArmISA::TableWalker::WalkerState::functional, haveSecurity, gem5::ArmISA::HaveVirtHostExt(), gem5::ArmISA::TableWalker::WalkerState::hcr, gem5::ArmISA::TableWalker::WalkerState::htcr, gem5::ArmISA::TableWalker::WalkerState::isFetch, gem5::ArmISA::TableWalker::WalkerState::isHyp, gem5::ArmISA::TableWalker::WalkerState::isSecure, isStage2, gem5::ArmISA::TableWalker::WalkerState::isWrite, gem5::ArmISA::longDescFormatInUse(), gem5::ArmISA::MISCREG_CPSR, gem5::ArmISA::MISCREG_HCR, gem5::ArmISA::MISCREG_HCR_EL2, gem5::ArmISA::MISCREG_HTCR, gem5::ArmISA::MISCREG_SCTLR, gem5::ArmISA::MISCREG_SCTLR_EL1, gem5::ArmISA::MISCREG_SCTLR_EL2, gem5::ArmISA::MISCREG_SCTLR_EL3, gem5::ArmISA::MISCREG_TCR_EL1, gem5::ArmISA::MISCREG_TCR_EL2, gem5::ArmISA::MISCREG_TCR_EL3, gem5::ArmISA::MISCREG_TTBCR, gem5::ArmISA::MISCREG_VSTCR_EL2, gem5::ArmISA::MISCREG_VTCR, gem5::ArmISA::MISCREG_VTCR_EL2, gem5::ArmISA::TableWalker::WalkerState::mode, gem5::NoFault, panic, pending, pendingChange(), pendingQueue, gem5::ArmISA::TableWalker::WalkerState::physAddrRange, processWalk(), processWalkAArch64(), processWalkLPAE(), gem5::ArmISA::purifyTaggedAddr(), gem5::ArmISA::TableWalker::WalkerState::pxnTable, gem5::ThreadContext::readMiscReg(), gem5::ArmISA::TableWalker::WalkerState::req, REQUESTED, gem5::ArmISA::TableWalker::TableWalkerStats::requestOrigin, gem5::ArmISA::TableWalker::WalkerState::rwTable, gem5::ArmISA::TableWalker::WalkerState::sctlr, sctlr, gem5::ArmISA::TableWalker::WalkerState::secureLookup, gem5::ArmISA::snsBankedIndex(), gem5::ArmISA::TableWalker::TableWalkerStats::squashedBefore, gem5::ArmISA::TableWalker::WalkerState::stage2Req, gem5::ArmISA::TableWalker::WalkerState::startTime, stats, gem5::ArmISA::TableWalker::WalkerState::tableWalker, gem5::ArmISA::TableWalker::WalkerState::tc, gem5::ArmISA::TableWalker::WalkerState::tcr, gem5::ArmISA::TableWalker::WalkerState::timing, gem5::ArmISA::TableWalker::WalkerState::transState, gem5::ArmISA::TableWalker::WalkerState::tranType, gem5::ArmISA::TLB::tranTypeEL(), gem5::ArmISA::TableWalker::WalkerState::ttbcr, gem5::ArmISA::TableWalker::WalkerState::userTable, gem5::ArmISA::TableWalker::WalkerState::vaddr, gem5::ArmISA::TableWalker::WalkerState::vaddr_tainted, gem5::ArmISA::TableWalker::WalkerState::vmid, gem5::ArmISA::TableWalker::WalkerState::vtcr, gem5::ArmISA::TableWalker::TableWalkerStats::walks, gem5::ArmISA::TableWalker::TableWalkerStats::walksLongDescriptor, gem5::ArmISA::TableWalker::TableWalkerStats::walksShortDescriptor, gem5::BaseMMU::Write, and gem5::ArmISA::TableWalker::WalkerState::xnTable.

Member Data Documentation

◆ _haveLargeAsid64

bool gem5::ArmISA::TableWalker::_haveLargeAsid64
protected

Definition at line 986 of file table_walker.hh.

Referenced by haveLargeAsid64().

◆ _haveLPAE

bool gem5::ArmISA::TableWalker::_haveLPAE
protected

Definition at line 983 of file table_walker.hh.

Referenced by haveLPAE(), and memAttrsLPAE().

◆ _haveVirtualization

bool gem5::ArmISA::TableWalker::_haveVirtualization
protected

Definition at line 984 of file table_walker.hh.

Referenced by haveVirtualization(), and walk().

◆ _physAddrRange

uint8_t gem5::ArmISA::TableWalker::_physAddrRange
protected

Definition at line 985 of file table_walker.hh.

Referenced by checkAddrSizeFaultAArch64(), physAddrRange(), and walk().

◆ COMPLETED

const unsigned gem5::ArmISA::TableWalker::COMPLETED = 1
staticprotected

Definition at line 1011 of file table_walker.hh.

Referenced by insertTableEntry().

◆ currState

WalkerState* gem5::ArmISA::TableWalker::currState
protected

◆ doL0LongDescEvent

EventFunctionWrapper gem5::ArmISA::TableWalker::doL0LongDescEvent
private

Definition at line 1064 of file table_walker.hh.

◆ doL1DescEvent

EventFunctionWrapper gem5::ArmISA::TableWalker::doL1DescEvent
private

Definition at line 1055 of file table_walker.hh.

Referenced by processWalk().

◆ doL1LongDescEvent

EventFunctionWrapper gem5::ArmISA::TableWalker::doL1LongDescEvent
private

Definition at line 1066 of file table_walker.hh.

◆ doL2DescEvent

EventFunctionWrapper gem5::ArmISA::TableWalker::doL2DescEvent
private

Definition at line 1059 of file table_walker.hh.

Referenced by doL1Descriptor().

◆ doL2LongDescEvent

EventFunctionWrapper gem5::ArmISA::TableWalker::doL2LongDescEvent
private

Definition at line 1068 of file table_walker.hh.

◆ doL3LongDescEvent

EventFunctionWrapper gem5::ArmISA::TableWalker::doL3LongDescEvent
private

Definition at line 1070 of file table_walker.hh.

◆ doProcessEvent

EventFunctionWrapper gem5::ArmISA::TableWalker::doProcessEvent
private

Definition at line 1095 of file table_walker.hh.

Referenced by nextWalk().

◆ haveSecurity

bool gem5::ArmISA::TableWalker::haveSecurity
protected

Cached copies of system-level properties.

Definition at line 982 of file table_walker.hh.

Referenced by insertTableEntry(), processWalk(), and walk().

◆ isStage2

const bool gem5::ArmISA::TableWalker::isStage2
protected

Indicates whether this table walker is part of the stage 2 mmu.

Definition at line 964 of file table_walker.hh.

Referenced by doL1Descriptor(), doL2Descriptor(), generateLongDescFault(), insertTableEntry(), memAttrsAArch64(), memAttrsLPAE(), processWalk(), processWalkAArch64(), processWalkLPAE(), processWalkWrapper(), and walk().

◆ LongDescEventByLevel

Event* gem5::ArmISA::TableWalker::LongDescEventByLevel[4]
private

Definition at line 1073 of file table_walker.hh.

Referenced by doLongDescriptor(), and processWalkLPAE().

◆ mmu

MMU* gem5::ArmISA::TableWalker::mmu
protected

The MMU to forward second stage look upts to.

Definition at line 955 of file table_walker.hh.

Referenced by readDataUntimed(), and setMmu().

◆ numSquashable

unsigned gem5::ArmISA::TableWalker::numSquashable
protected

The number of walks belonging to squashed instructions that can be removed from the pendingQueue per cycle.

Definition at line 979 of file table_walker.hh.

Referenced by processWalkWrapper().

◆ pending

bool gem5::ArmISA::TableWalker::pending
protected

If a timing translation is currently in progress.

Definition at line 975 of file table_walker.hh.

Referenced by doL1DescriptorWrapper(), doL2DescriptorWrapper(), doLongDescriptorWrapper(), processWalk(), processWalkLPAE(), processWalkWrapper(), and walk().

◆ pendingChangeTick

Tick gem5::ArmISA::TableWalker::pendingChangeTick
mutableprotected

Definition at line 1008 of file table_walker.hh.

Referenced by pendingChange().

◆ pendingQueue

std::list<WalkerState *> gem5::ArmISA::TableWalker::pendingQueue
protected

Queue of requests that have passed are waiting because the walker is currently busy.

Definition at line 952 of file table_walker.hh.

Referenced by completeDrain(), drain(), nextWalk(), pendingChange(), processWalkWrapper(), and walk().

◆ pendingReqs

unsigned gem5::ArmISA::TableWalker::pendingReqs
mutableprotected

Definition at line 1007 of file table_walker.hh.

Referenced by pendingChange().

◆ port

Port* gem5::ArmISA::TableWalker::port
protected

Port shared by the two table walkers.

Definition at line 961 of file table_walker.hh.

Referenced by fetchDescriptor(), getPort(), readDataUntimed(), and setPort().

◆ REQUESTED

const unsigned gem5::ArmISA::TableWalker::REQUESTED = 0
staticprotected

Definition at line 1010 of file table_walker.hh.

Referenced by walk().

◆ requestorId

RequestorID gem5::ArmISA::TableWalker::requestorId
protected

◆ sctlr

SCTLR gem5::ArmISA::TableWalker::sctlr
protected

Cached copy of the sctlr as it existed when translation began.

Definition at line 970 of file table_walker.hh.

Referenced by memAttrs(), and walk().

◆ stateQueues

std::list<WalkerState *> gem5::ArmISA::TableWalker::stateQueues[MAX_LOOKUP_LEVELS]
protected

Queues of requests for all the different lookup levels.

Definition at line 948 of file table_walker.hh.

Referenced by completeDrain(), doL1DescriptorWrapper(), doL2DescriptorWrapper(), doLongDescriptorWrapper(), drain(), and fetchDescriptor().

◆ stats

gem5::ArmISA::TableWalker::TableWalkerStats gem5::ArmISA::TableWalker::stats
protected

◆ tlb

TLB* gem5::ArmISA::TableWalker::tlb
protected

TLB that is initiating these table walks.

Definition at line 967 of file table_walker.hh.

Referenced by doL1DescriptorWrapper(), doL2DescriptorWrapper(), doLongDescriptorWrapper(), getTlb(), insertTableEntry(), processWalkWrapper(), setTlb(), and testWalk().


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

Generated on Tue Sep 21 2021 12:28:42 for gem5 by doxygen 1.8.17