#include <vio_mmio.hh>

Inheritance diagram for MmioVirtIO:

Public Member Functions
	MmioVirtIO (const MmioVirtIOParams *params)

virtual	~MmioVirtIO ()

Public Member Functions inherited from BasicPioDevice
	BasicPioDevice (const Params *p, Addr size)

const Params *	params () const

AddrRangeList	getAddrRanges () const override
	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

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

Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID) override
	Get a 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...

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	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
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)
	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 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 Stats::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 (Stats::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 Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group. More...

	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

Public Member Functions inherited from 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 Types
enum	{ INT_USED_RING = 1 << 0, INT_CONFIG = 1 << 1 }


enum	: Addr { OFF_MAGIC = 0x00, OFF_VERSION = 0x04, OFF_DEVICE_ID = 0x08, OFF_VENDOR_ID = 0x0C, OFF_HOST_FEATURES = 0x10, OFF_HOST_FEATURES_SELECT = 0x14, OFF_GUEST_FEATURES = 0x20, OFF_GUEST_FEATURES_SELECT = 0x24, OFF_GUEST_PAGE_SIZE = 0x28, OFF_QUEUE_SELECT = 0x30, OFF_QUEUE_NUM_MAX = 0x34, OFF_QUEUE_NUM = 0x38, OFF_QUEUE_ALIGN = 0x3C, OFF_QUEUE_PFN = 0x40, OFF_QUEUE_NOTIFY = 0x50, OFF_INTERRUPT_STATUS = 0x60, OFF_INTERRUPT_ACK = 0x64, OFF_STATUS = 0x70, OFF_CONFIG = 0x100 }
	Offsets into VirtIO MMIO space. More...

Protected Member Functions
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...

uint32_t	read (Addr offset)

void	write (Addr offset, uint32_t value)

void	kick ()

void	setInterrupts (uint32_t value)

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...

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
uint32_t	hostFeaturesSelect

uint32_t	guestFeaturesSelect

uint32_t	pageSize

uint32_t	interruptStatus

VirtIODeviceBase &	vio

ArmInterruptPin *const	interrupt

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< PioDevice >	pioPort
	The pioPort that handles the requests for us and provides us requests that it sees. More...

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...

Static Protected Attributes
static const uint32_t	MAGIC = 0x74726976

static const uint32_t	VERSION = 1

static const uint32_t	VENDOR_ID = 0x1AF4

Additional Inherited Members
Public Types inherited from BasicPioDevice
typedef BasicPioDeviceParams	Params

Public Types inherited from PioDevice
typedef PioDeviceParams	Params

Public Types inherited from ClockedObject
typedef ClockedObjectParams	Params
	Parameters of ClockedObject. More...

Public Types inherited from SimObject
typedef SimObjectParams	Params

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 ()
	Gets the fully-qualified name of the active section. More...

static void	serializeAll (const std::string &cpt_dir)
	Serializes all the SimObjects. More...

static void	unserializeGlobals (CheckpointIn &cp)

Public Attributes inherited from ClockedObject
PowerState *	powerState

Detailed Description

Definition at line 47 of file vio_mmio.hh.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum : Addr

protected

Offsets into VirtIO MMIO space.

Enumerator
OFF_MAGIC
OFF_VERSION
OFF_DEVICE_ID
OFF_VENDOR_ID
OFF_HOST_FEATURES
OFF_HOST_FEATURES_SELECT
OFF_GUEST_FEATURES
OFF_GUEST_FEATURES_SELECT
OFF_GUEST_PAGE_SIZE
OFF_QUEUE_SELECT
OFF_QUEUE_NUM_MAX
OFF_QUEUE_NUM
OFF_QUEUE_ALIGN
OFF_QUEUE_PFN
OFF_QUEUE_NOTIFY
OFF_INTERRUPT_STATUS
OFF_INTERRUPT_ACK
OFF_STATUS
OFF_CONFIG

Definition at line 61 of file vio_mmio.hh.

◆ anonymous enum

anonymous enum

protected

Enumerator
INT_USED_RING
INT_CONFIG

Definition at line 85 of file vio_mmio.hh.

Constructor & Destructor Documentation

◆ MmioVirtIO()

MmioVirtIO::MmioVirtIO ( const MmioVirtIOParams * params )

Definition at line 45 of file vio_mmio.cc.

References fatal_if, interrupt, kick(), VirtIODeviceBase::registerKickCallback(), and vio.

◆ ~MmioVirtIO()

MmioVirtIO::~MmioVirtIO ( )

virtual

Definition at line 56 of file vio_mmio.cc.

Member Function Documentation

◆ kick()

void MmioVirtIO::kick ( )

protected

Definition at line 258 of file vio_mmio.cc.

References DPRINTF, INT_USED_RING, interruptStatus, and setInterrupts().

Referenced by MmioVirtIO().

◆ read() [1/2]

uint32_t MmioVirtIO::read ( Addr offset )

protected

◆ read() [2/2]

Tick MmioVirtIO::read ( PacketPtr pkt )

overrideprotectedvirtual

Pure virtual function that the device must implement.

Called when a read command is recieved by the port.

Parameters

pkt	Packet describing this request

Returns: number of ticks it took to complete

Implements PioDevice.

Definition at line 61 of file vio_mmio.cc.

References DPRINTF, Packet::getAddr(), Packet::getSize(), Packet::makeResponse(), OFF_CONFIG, ArmISA::offset, panic_if, BasicPioDevice::pioAddr, VirtIODeviceBase::readConfig(), Packet::setLE(), and vio.

◆ setInterrupts()

void MmioVirtIO::setInterrupts ( uint32_t value )

protected

Definition at line 265 of file vio_mmio.cc.

References ArmInterruptPin::clear(), interrupt, interruptStatus, and ArmInterruptPin::raise().

Referenced by kick(), and write().

◆ write() [1/2]

void MmioVirtIO::write	(	Addr	offset,
		uint32_t	value
	)

protected

◆ write() [2/2]

Tick MmioVirtIO::write ( PacketPtr pkt )

overrideprotectedvirtual

Pure virtual function that the device must implement.

Called when a write command is recieved by the port.

Parameters

pkt	Packet describing this request

Returns: number of ticks it took to complete

Implements PioDevice.

Definition at line 159 of file vio_mmio.cc.

References DPRINTF, Packet::getAddr(), Packet::getLE(), Packet::getSize(), Packet::makeResponse(), OFF_CONFIG, ArmISA::offset, panic_if, BasicPioDevice::pioAddr, vio, and VirtIODeviceBase::writeConfig().

Member Data Documentation

◆ guestFeaturesSelect

uint32_t MmioVirtIO::guestFeaturesSelect

protected

Definition at line 102 of file vio_mmio.hh.

Referenced by read(), and write().

◆ hostFeaturesSelect

uint32_t MmioVirtIO::hostFeaturesSelect

protected

Definition at line 101 of file vio_mmio.hh.

Referenced by read(), and write().

◆ interrupt

ArmInterruptPin* const MmioVirtIO::interrupt

protected

Definition at line 108 of file vio_mmio.hh.

Referenced by MmioVirtIO(), and setInterrupts().

◆ interruptStatus

uint32_t MmioVirtIO::interruptStatus

protected

Definition at line 104 of file vio_mmio.hh.

Referenced by kick(), read(), setInterrupts(), and write().

◆ MAGIC

const uint32_t MmioVirtIO::MAGIC = 0x74726976

staticprotected

Definition at line 90 of file vio_mmio.hh.

Referenced by read().

◆ pageSize

uint32_t MmioVirtIO::pageSize

protected

Definition at line 103 of file vio_mmio.hh.

Referenced by read(), and write().

◆ VENDOR_ID

const uint32_t MmioVirtIO::VENDOR_ID = 0x1AF4

staticprotected

Definition at line 92 of file vio_mmio.hh.

Referenced by read().

◆ VERSION

const uint32_t MmioVirtIO::VERSION = 1

staticprotected

Definition at line 91 of file vio_mmio.hh.

Referenced by read().

◆ vio

VirtIODeviceBase& MmioVirtIO::vio

protected

Definition at line 107 of file vio_mmio.hh.

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

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

dev/arm/vio_mmio.hh
dev/arm/vio_mmio.cc

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Static Protected Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ anonymous enum

◆ anonymous enum

Constructor & Destructor Documentation

◆ MmioVirtIO()

◆ ~MmioVirtIO()

Member Function Documentation

◆ kick()

◆ read() [1/2]

◆ read() [2/2]

◆ setInterrupts()

◆ write() [1/2]

◆ write() [2/2]

Member Data Documentation

◆ guestFeaturesSelect

◆ hostFeaturesSelect

◆ interrupt

◆ interruptStatus

◆ MAGIC

◆ pageSize

◆ VENDOR_ID

◆ VERSION

◆ vio