gem5
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#include <uart8250.hh>
Classes | |
class | IntrEvent |
Public Types | |
typedef Uart8250Params | Params |
Public Types inherited from Uart | |
typedef UartParams | 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 |
Uart8250 (const Params *p) | |
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... | |
AddrRangeList | getAddrRanges () const override |
Determine the address ranges that this device responds to. More... | |
void | dataAvailable () override |
Inform the uart that there is data available. More... | |
virtual bool | intStatus () |
Return if we have an interrupt pending. 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 Uart | |
Uart (const Params *p, Addr pio_size) | |
const Params * | params () const |
bool | intStatus () |
Return if we have an interrupt pending. More... | |
Public Member Functions inherited from BasicPioDevice | |
BasicPioDevice (const Params *p, Addr size) | |
const Params * | params () const |
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 | IER |
uint8_t | DLAB |
uint8_t | LCR |
uint8_t | MCR |
Tick | lastTxInt |
IntrEvent | txIntrEvent |
IntrEvent | rxIntrEvent |
Protected Attributes inherited from Uart | |
int | status |
Platform * | platform |
Terminal * | term |
MakeCallback< Uart,&Uart::dataAvailable > | callbackDataAvail |
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... | |
Definition at line 70 of file uart8250.hh.
typedef Uart8250Params Uart8250::Params |
Definition at line 92 of file uart8250.hh.
Uart8250::Uart8250 | ( | const Params * | p | ) |
Definition at line 104 of file uart8250.cc.
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overridevirtual |
Inform the uart that there is data available.
Implements Uart.
Definition at line 276 of file uart8250.cc.
References IER, Uart::platform, Platform::postConsoleInt(), RX_INT, Uart::status, and UART_IER_RDI.
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overridevirtual |
Determine the address ranges that this device responds to.
Reimplemented from BasicPioDevice.
Definition at line 288 of file uart8250.cc.
References BasicPioDevice::pioAddr, BasicPioDevice::pioSize, and RangeSize().
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inlinevirtual |
Return if we have an interrupt pending.
Definition at line 114 of file uart8250.hh.
References Uart::status.
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inline |
Definition at line 94 of file uart8250.hh.
References SimObject::_params.
Pure virtual function that the device must implement.
Called when a read command is recieved by the port.
pkt | Packet describing this request |
Implements PioDevice.
Definition at line 111 of file uart8250.cc.
References Platform::clearConsoleInt(), Terminal::dataAvailable(), DPRINTF, Packet::getAddr(), Packet::getSize(), IER, IIR_NOPEND, IIR_RXID, IIR_TXID, Terminal::in(), LCR, Packet::makeAtomicResponse(), MCR, panic, BasicPioDevice::pioAddr, BasicPioDevice::pioDelay, BasicPioDevice::pioSize, Uart::platform, RX_INT, rxIntrEvent, Uart8250::IntrEvent::scheduleIntr(), Packet::set(), Uart::status, Uart::term, TX_INT, UART_IER_RDI, UART_LSR_DR, UART_LSR_TEMT, and UART_LSR_THRE.
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overridevirtual |
Serialize an object.
Output an object's state into the current checkpoint section.
cp | Checkpoint state |
Implements Serializable.
Definition at line 296 of file uart8250.cc.
References DLAB, IER, LCR, MCR, rxIntrEvent, Event::scheduled(), SERIALIZE_SCALAR, Uart::status, txIntrEvent, and Event::when().
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overridevirtual |
Unserialize an object.
Read an object's state from the current checkpoint section.
cp | Checkpoint state |
Implements Serializable.
Definition at line 318 of file uart8250.cc.
References DLAB, IER, LCR, MCR, rxIntrEvent, EventManager::schedule(), Uart::status, txIntrEvent, and UNSERIALIZE_SCALAR.
Pure virtual function that the device must implement.
Called when a write command is recieved by the port.
pkt | Packet describing this request |
Implements PioDevice.
Definition at line 192 of file uart8250.cc.
References Platform::clearConsoleInt(), curTick(), Terminal::dataAvailable(), EventManager::deschedule(), DPRINTF, Packet::get(), Packet::getAddr(), Packet::getSize(), IER, lastTxInt, LCR, Packet::makeAtomicResponse(), MCR, SimClock::Int::ns, Terminal::out(), panic, BasicPioDevice::pioAddr, BasicPioDevice::pioDelay, BasicPioDevice::pioSize, Uart::platform, Uart8250::IntrEvent::process(), RX_INT, rxIntrEvent, Event::scheduled(), Uart8250::IntrEvent::scheduleIntr(), Uart::status, Uart::term, TX_INT, txIntrEvent, UART_IER_RDI, UART_IER_THRI, and UART_MCR_LOOP.
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protected |
Definition at line 73 of file uart8250.hh.
Referenced by serialize(), and unserialize().
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protected |
Definition at line 73 of file uart8250.hh.
Referenced by dataAvailable(), read(), serialize(), unserialize(), and write().
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Definition at line 74 of file uart8250.hh.
Referenced by write().
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protected |
Definition at line 73 of file uart8250.hh.
Referenced by read(), serialize(), unserialize(), and write().
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protected |
Definition at line 73 of file uart8250.hh.
Referenced by read(), serialize(), unserialize(), and write().
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protected |
Definition at line 89 of file uart8250.hh.
Referenced by read(), serialize(), unserialize(), and write().
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protected |
Definition at line 88 of file uart8250.hh.
Referenced by serialize(), unserialize(), and write().