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IsaFake Class Reference

IsaFake is a device that returns, BadAddr, 1 or 0 on all reads and rites. More...

#include <isa_fake.hh>

Inheritance diagram for IsaFake:
BasicPioDevice PioDevice MemObject ClockedObject SimObject Clocked EventManager Serializable Drainable

Public Types

typedef IsaFakeParams Params
 
- Public Types inherited from BasicPioDevice
typedef BasicPioDeviceParams Params
 
- Public Types inherited from PioDevice
typedef PioDeviceParams Params
 
- Public Types inherited from MemObject
typedef MemObjectParams Params
 
- Public Types inherited from ClockedObject
typedef ClockedObjectParams Params
 Parameters of ClockedObject. More...
 
- Public Types inherited from SimObject
typedef SimObjectParams Params
 

Public Member Functions

const Paramsparams () const
 
 IsaFake (Params *p)
 The constructor for Isa Fake just registers itself with the MMU. More...
 
virtual Tick read (PacketPtr pkt)
 This read always returns -1. More...
 
virtual Tick write (PacketPtr pkt)
 All writes are simply ignored. More...
 
- Public Member Functions inherited from BasicPioDevice
 BasicPioDevice (const Params *p, Addr size)
 
const Paramsparams () const
 
virtual AddrRangeList getAddrRanges () const
 Determine the address ranges that this device responds to. More...
 
- Public Member Functions inherited from PioDevice
 PioDevice (const Params *p)
 
virtual ~PioDevice ()
 
const Paramsparams () const
 
virtual void init ()
 init() is called after all C++ SimObjects have been created and all ports are connected. More...
 
virtual BaseSlavePortgetSlavePort (const std::string &if_name, PortID idx=InvalidPortID)
 Get a slave port with a given name and index. More...
 
- Public Member Functions inherited from MemObject
const Paramsparams () const
 
 MemObject (const Params *params)
 
virtual BaseMasterPortgetMasterPort (const std::string &if_name, PortID idx=InvalidPortID)
 Get a master port with a given name and index. More...
 
- Public Member Functions inherited from ClockedObject
 ClockedObject (const ClockedObjectParams *p)
 
const Paramsparams () const
 
void serialize (CheckpointOut &cp) const override
 Serialize an object. More...
 
void unserialize (CheckpointIn &cp) override
 Unserialize an object. More...
 
Enums::PwrState pwrState () const
 
std::string pwrStateName () const
 
std::vector< double > pwrStateWeights () const
 Returns the percentage residency for each power state. More...
 
void computeStats ()
 Record stats values like state residency by computing the time difference from previous update. More...
 
void pwrState (Enums::PwrState)
 
void regStats () override
 Register statistics for this object. More...
 
- Public Member Functions inherited from SimObject
const Paramsparams () const
 
 SimObject (const Params *_params)
 
virtual ~SimObject ()
 
virtual const std::string name () const
 
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 resetStats ()
 Reset statistics associated with this object. 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 EventManager
 EventManager (EventManager &em)
 
 EventManager (EventManager *em)
 
 EventManager (EventQueue *eq)
 
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)
 
void setCurTick (Tick newVal)
 
- 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 Clocked
void updateClockPeriod () const
 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 Attributes

uint8_t retData8
 
uint16_t retData16
 
uint32_t retData32
 
uint64_t retData64
 
- Protected Attributes inherited from 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 PioDevice
Systemsys
 
PioPort pioPort
 The pioPort that handles the requests for us and provides us requests that it sees. More...
 
- Protected Attributes inherited from ClockedObject
Enums::PwrState _currPwrState
 To keep track of the current power state. More...
 
Tick prvEvalTick
 
Stats::Scalar numPwrStateTransitions
 
Stats::Distribution pwrStateClkGateDist
 
Stats::Vector pwrStateResidencyTicks
 
- 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...
 

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 ()
 Get the fully-qualified name of the active section. More...
 
static void serializeAll (const std::string &cpt_dir)
 
static void unserializeGlobals (CheckpointIn &cp)
 
- Static Public Attributes inherited from Serializable
static int ckptCount = 0
 
static int ckptMaxCount = 0
 
static int ckptPrevCount = -1
 
- 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 Member Functions inherited from 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...
 

Detailed Description

IsaFake is a device that returns, BadAddr, 1 or 0 on all reads and rites.

It is meant to be placed at an address range so that an mcheck doesn't occur when an os probes a piece of hw that doesn't exist (e.g. UARTs1-3), or catch requests in the memory system that have no responders..

Definition at line 52 of file isa_fake.hh.

Member Typedef Documentation

typedef IsaFakeParams IsaFake::Params

Definition at line 61 of file isa_fake.hh.

Constructor & Destructor Documentation

IsaFake::IsaFake ( Params p)

The constructor for Isa Fake just registers itself with the MMU.

Parameters
pparams structure

Definition at line 45 of file isa_fake.cc.

References retData16, retData32, retData64, and retData8.

Member Function Documentation

const Params* IsaFake::params ( ) const
inline

Definition at line 63 of file isa_fake.hh.

References SimObject::_params.

Referenced by read(), and write().

Tick IsaFake::read ( PacketPtr  pkt)
virtual
Tick IsaFake::write ( PacketPtr  pkt)
virtual

All writes are simply ignored.

Parameters
pktThe memory request.
datathe data to not write.

Implements PioDevice.

Definition at line 94 of file isa_fake.cc.

References data, DPRINTF, Packet::get(), Packet::getAddr(), Packet::getSize(), Packet::makeAtomicResponse(), SimObject::name(), panic, params(), BasicPioDevice::pioDelay, retData16, retData32, retData64, retData8, Packet::setBadAddress(), and warn.

Member Data Documentation

uint16_t IsaFake::retData16
protected

Definition at line 56 of file isa_fake.hh.

Referenced by IsaFake(), read(), and write().

uint32_t IsaFake::retData32
protected

Definition at line 57 of file isa_fake.hh.

Referenced by IsaFake(), read(), and write().

uint64_t IsaFake::retData64
protected

Definition at line 58 of file isa_fake.hh.

Referenced by IsaFake(), read(), and write().

uint8_t IsaFake::retData8
protected

Definition at line 55 of file isa_fake.hh.

Referenced by IsaFake(), read(), and write().


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

Generated on Fri Jun 9 2017 13:04:13 for gem5 by doxygen 1.8.6