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gem5
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IsaFake is a device that returns, BadAddr, 1 or 0 on all reads and rites. More...
#include <isa_fake.hh>
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 Params * | params () 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 Params * | params () 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 Params * | params () const |
| virtual void | init () |
| init() is called after all C++ SimObjects have been created and all ports are connected. More... | |
| virtual BaseSlavePort & | getSlavePort (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 Params * | params () const |
| MemObject (const Params *params) | |
| virtual BaseMasterPort & | getMasterPort (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 Params * | params () 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 Params * | params () 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... | |
| ProbeManager * | getProbeManager () |
| 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) | |
| EventQueue * | eventQueue () 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 | |
| System * | sys |
| 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 | |
| EventQueue * | eventq |
| 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 SimObject * | find (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 | |
| Clocked & | operator= (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... | |
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.
| typedef IsaFakeParams IsaFake::Params |
Definition at line 61 of file isa_fake.hh.
| IsaFake::IsaFake | ( | Params * | p | ) |
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inline |
Definition at line 63 of file isa_fake.hh.
References SimObject::_params.
This read always returns -1.
| pkt | The memory request. |
| data | Where to put the data. |
Implements PioDevice.
Definition at line 55 of file isa_fake.cc.
References DPRINTF, Packet::getAddr(), Packet::getPtr(), Packet::getSize(), Packet::makeAtomicResponse(), SimObject::name(), panic, params(), BasicPioDevice::pioAddr, BasicPioDevice::pioDelay, BasicPioDevice::pioSize, retData16, retData32, retData64, retData8, Packet::set(), Packet::setBadAddress(), and warn.
All writes are simply ignored.
| pkt | The memory request. |
| data | the 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.
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Definition at line 56 of file isa_fake.hh.
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Definition at line 57 of file isa_fake.hh.
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Definition at line 58 of file isa_fake.hh.
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Definition at line 55 of file isa_fake.hh.