gem5  v21.1.0.2
Public Types | Public Member Functions | Protected Member Functions | Protected Attributes | Static Protected Attributes | List of all members
gem5::X86ISA::I8259 Class Reference

#include <i8259.hh>

Inheritance diagram for gem5::X86ISA::I8259:
gem5::BasicPioDevice gem5::PioDevice gem5::ClockedObject gem5::SimObject gem5::Clocked gem5::EventManager gem5::Serializable gem5::Drainable gem5::statistics::Group gem5::Named

Public Types

using Params = I8259Params
 
- Public Types inherited from gem5::PioDevice
using Params = PioDeviceParams
 
- 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

 I8259 (const Params &p)
 
PortgetPort (const std::string &if_name, PortID idx=InvalidPortID) override
 Get a port with a given name and index. More...
 
Tick read (PacketPtr pkt) override
 Pure virtual function that the device must implement. More...
 
Tick write (PacketPtr pkt) override
 Pure virtual function that the device must implement. More...
 
void maskAll ()
 
void unmaskAll ()
 
void signalInterrupt (int line)
 
void raiseInterruptPin (int number)
 
void lowerInterruptPin (int number)
 
int getVector ()
 
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::BasicPioDevice
 PARAMS (BasicPioDevice)
 
 BasicPioDevice (const Params &p, Addr size)
 
AddrRangeList getAddrRanges () const override
 Determine the address ranges that this device responds to. More...
 
- Public Member Functions inherited from gem5::PioDevice
 PioDevice (const Params &p)
 
virtual ~PioDevice ()
 
- 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 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
 

Protected Member Functions

void init () override
 init() is called after all C++ SimObjects have been created and all ports are connected. More...
 
void requestInterrupt (int line)
 
void handleEOI (int line)
 
- 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...
 
- 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...
 

Protected Attributes

bool pinStates [NumLines]
 
Tick latency
 
std::vector< IntSourcePin< I8259 > * > output
 
std::vector< IntSinkPin< I8259 > * > inputs
 
enums::X86I8259CascadeMode mode
 
I8259slave
 
uint8_t IRR
 
uint8_t ISR
 
uint8_t IMR
 
uint8_t vectorOffset
 
bool cascadeMode
 
uint8_t cascadeBits
 
bool edgeTriggered
 
bool readIRR
 
bool expectICW4
 
int initControlWord
 
bool autoEOI
 
- Protected Attributes inherited from gem5::BasicPioDevice
Addr pioAddr
 Address that the device listens to. More...
 
Addr pioSize
 Size that the device's address range. More...
 
Tick pioDelay
 Delay that the device experinces on an access. More...
 
- Protected Attributes inherited from gem5::PioDevice
Systemsys
 
PioPort< PioDevicepioPort
 The pioPort that handles the requests for us and provides us requests that it sees. 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...
 

Static Protected Attributes

static const int NumLines = 8
 

Additional Inherited Members

- 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...
 
- Public Attributes inherited from gem5::ClockedObject
PowerStatepowerState
 

Detailed Description

Definition at line 43 of file i8259.hh.

Member Typedef Documentation

◆ Params

using gem5::X86ISA::I8259::Params = I8259Params

Definition at line 87 of file i8259.hh.

Constructor & Destructor Documentation

◆ I8259()

gem5::X86ISA::I8259::I8259 ( const Params p)

Member Function Documentation

◆ getPort()

Port& gem5::X86ISA::I8259::getPort ( const std::string &  if_name,
PortID  idx = InvalidPortID 
)
inlineoverridevirtual

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::PioDevice.

Definition at line 92 of file i8259.hh.

References gem5::PioDevice::getPort(), inputs, and output.

◆ getVector()

int gem5::X86ISA::I8259::getVector ( )

Definition at line 311 of file i8259.cc.

References gem5::bits(), DPRINTF, gem5::findMsbSet(), and gem5::ISR.

◆ handleEOI()

void gem5::X86ISA::I8259::handleEOI ( int  line)
protected

Definition at line 246 of file i8259.cc.

References gem5::findMsbSet(), and gem5::ISR.

◆ init()

void gem5::X86ISA::I8259::init ( )
overrideprotectedvirtual

init() is called after all C++ SimObjects have been created and all ports are connected.

Initializations that are independent of unserialization but rely on a fully instantiated and connected SimObject graph should be done here.

Reimplemented from gem5::PioDevice.

Definition at line 66 of file i8259.cc.

References gem5::PioDevice::init().

◆ lowerInterruptPin()

void gem5::X86ISA::I8259::lowerInterruptPin ( int  number)

Definition at line 301 of file i8259.cc.

References DPRINTF, and fatal.

◆ maskAll()

void gem5::X86ISA::I8259::maskAll ( )
inline

Definition at line 106 of file i8259.hh.

References IMR.

Referenced by gem5::Pc::init().

◆ raiseInterruptPin()

void gem5::X86ISA::I8259::raiseInterruptPin ( int  number)

Definition at line 289 of file i8259.cc.

References DPRINTF, and fatal.

◆ read()

Tick gem5::X86ISA::I8259::read ( PacketPtr  pkt)
overridevirtual

Pure virtual function that the device must implement.

Called when a read command is recieved by the port.

Parameters
pktPacket describing this request
Returns
number of ticks it took to complete

Implements gem5::PioDevice.

Definition at line 75 of file i8259.cc.

References DPRINTF, gem5::Packet::getAddr(), gem5::Packet::getSize(), gem5::IMR, gem5::ISR, gem5::Packet::makeAtomicResponse(), and gem5::Packet::setLE().

◆ requestInterrupt()

void gem5::X86ISA::I8259::requestInterrupt ( int  line)
protected

Definition at line 256 of file i8259.cc.

References gem5::bits(), DPRINTF, gem5::ISR, gem5::output(), and warn.

◆ serialize()

void gem5::X86ISA::I8259::serialize ( CheckpointOut cp) const
overridevirtual

Serialize an object.

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

Parameters
cpCheckpoint state

Implements gem5::Serializable.

Definition at line 336 of file i8259.cc.

References gem5::IMR, gem5::ISR, gem5::ArmISA::mode, SERIALIZE_ARRAY, SERIALIZE_ENUM, and SERIALIZE_SCALAR.

◆ signalInterrupt()

void gem5::X86ISA::I8259::signalInterrupt ( int  line)

Definition at line 274 of file i8259.cc.

References gem5::bits(), DPRINTF, fatal, and gem5::IMR.

Referenced by gem5::Pc::postConsoleInt().

◆ unmaskAll()

void gem5::X86ISA::I8259::unmaskAll ( )
inline

Definition at line 112 of file i8259.hh.

References IMR.

◆ unserialize()

void gem5::X86ISA::I8259::unserialize ( CheckpointIn cp)
overridevirtual

Unserialize an object.

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

Parameters
cpCheckpoint state

Implements gem5::Serializable.

Definition at line 354 of file i8259.cc.

References gem5::IMR, gem5::ISR, gem5::ArmISA::mode, UNSERIALIZE_ARRAY, UNSERIALIZE_ENUM, and UNSERIALIZE_SCALAR.

◆ write()

Tick gem5::X86ISA::I8259::write ( PacketPtr  pkt)
overridevirtual

Pure virtual function that the device must implement.

Called when a write command is recieved by the port.

Parameters
pktPacket describing this request
Returns
number of ticks it took to complete

Implements gem5::PioDevice.

Definition at line 99 of file i8259.cc.

References gem5::bits(), DPRINTF, gem5::findMsbSet(), gem5::Packet::getAddr(), gem5::Packet::getLE(), gem5::Packet::getSize(), gem5::IMR, gem5::ISR, gem5::Packet::makeAtomicResponse(), gem5::X86ISA::mask, gem5::ArmISA::mode, and gem5::X86ISA::val.

Member Data Documentation

◆ autoEOI

bool gem5::X86ISA::I8259::autoEOI
protected

Definition at line 81 of file i8259.hh.

◆ cascadeBits

uint8_t gem5::X86ISA::I8259::cascadeBits
protected

Definition at line 71 of file i8259.hh.

◆ cascadeMode

bool gem5::X86ISA::I8259::cascadeMode
protected

Definition at line 67 of file i8259.hh.

◆ edgeTriggered

bool gem5::X86ISA::I8259::edgeTriggered
protected

Definition at line 73 of file i8259.hh.

◆ expectICW4

bool gem5::X86ISA::I8259::expectICW4
protected

Definition at line 77 of file i8259.hh.

◆ IMR

uint8_t gem5::X86ISA::I8259::IMR
protected

Definition at line 62 of file i8259.hh.

Referenced by maskAll(), and unmaskAll().

◆ initControlWord

int gem5::X86ISA::I8259::initControlWord
protected

Definition at line 78 of file i8259.hh.

◆ inputs

std::vector<IntSinkPin<I8259> *> gem5::X86ISA::I8259::inputs
protected

Definition at line 53 of file i8259.hh.

Referenced by getPort(), and I8259().

◆ IRR

uint8_t gem5::X86ISA::I8259::IRR
protected

Definition at line 58 of file i8259.hh.

◆ ISR

uint8_t gem5::X86ISA::I8259::ISR
protected

Definition at line 60 of file i8259.hh.

◆ latency

Tick gem5::X86ISA::I8259::latency
protected

Definition at line 51 of file i8259.hh.

◆ mode

enums::X86I8259CascadeMode gem5::X86ISA::I8259::mode
protected

Definition at line 54 of file i8259.hh.

◆ NumLines

const int gem5::X86ISA::I8259::NumLines = 8
staticprotected

Definition at line 46 of file i8259.hh.

Referenced by I8259().

◆ output

std::vector<IntSourcePin<I8259> *> gem5::X86ISA::I8259::output
protected

Definition at line 52 of file i8259.hh.

Referenced by getPort(), and I8259().

◆ pinStates

bool gem5::X86ISA::I8259::pinStates[NumLines]
protected

Definition at line 47 of file i8259.hh.

Referenced by I8259().

◆ readIRR

bool gem5::X86ISA::I8259::readIRR
protected

Definition at line 74 of file i8259.hh.

◆ slave

I8259* gem5::X86ISA::I8259::slave
protected

Definition at line 55 of file i8259.hh.

◆ vectorOffset

uint8_t gem5::X86ISA::I8259::vectorOffset
protected

Definition at line 65 of file i8259.hh.


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

Generated on Tue Sep 21 2021 12:34:57 for gem5 by doxygen 1.8.17