Virtqueue for data going from the host to the guest. More...

#include <rng.hh>

Inheritance diagram for gem5::VirtIORng::RngQueue:

Public Member Functions
	RngQueue (PortProxy &proxy, ByteOrder bo, uint16_t size, VirtIORng &_parent)

virtual	~RngQueue ()

void	onNotify ()
	Notify queue of pending events.

void	trySend ()
	Try to send data pending data from the terminal.

std::string	name () const

Public Member Functions inherited from gem5::VirtQueue
virtual	~VirtQueue ()

void	serialize (CheckpointOut &cp) const override
	Serialize an object.

void	unserialize (CheckpointIn &cp) override
	Unserialize an object.

void	reset ()
	Reset cached state in this queue and in the associated ring buffers.

void	setAddress (Addr address)
	Set the base address of this queue.

Addr	getAddress () const
	Get the guest physical address of this queue.

uint16_t	getSize () const
	Get the number of descriptors available in this queue.

VirtDescriptor *	getDescriptor (VirtDescriptor::Index index)
	Get a pointer to a specific descriptor in the queue.

VirtDescriptor *	consumeDescriptor ()
	Get an incoming descriptor chain from the queue.

void	produceDescriptor (VirtDescriptor *desc, uint32_t len)
	Send a descriptor chain to the guest.

virtual void	onNotifyDescriptor (VirtDescriptor *desc)
	Notify queue of pending incoming descriptor.

void	dump () const
	Dump the contents of a queue.

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.

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object.

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Protected Attributes
VirtIORng &	parent

Protected Attributes inherited from gem5::VirtQueue
ByteOrder	byteOrder
	Byte order in this queue.

Additional Inherited Members
Static Public Member Functions inherited from gem5::Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section.

static void	generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
	Generate a checkpoint file so that the serialization can be routed to it.

Static Public Attributes inherited from gem5::VirtQueue
static const Addr	ALIGN_BITS = 12
	Page size used by VirtIO. It's hard-coded to 4096 bytes in the spec for historical reasons.

static const Addr	ALIGN_SIZE = 1 << ALIGN_BITS

Protected Member Functions inherited from gem5::VirtQueue
	VirtQueue (PortProxy &proxy, ByteOrder bo, uint16_t size)
	Instantiate a new virtqueue.

Detailed Description

Virtqueue for data going from the host to the guest.

Definition at line 73 of file rng.hh.

Constructor & Destructor Documentation

◆ RngQueue()

gem5::VirtIORng::RngQueue::RngQueue	(	PortProxy &	proxy,
		ByteOrder	bo,
		uint16_t	size,
		VirtIORng &	_parent )

Definition at line 60 of file rng.cc.

◆ ~RngQueue()

virtual gem5::VirtIORng::RngQueue::~RngQueue ( )

inlinevirtual

Definition at line 79 of file rng.hh.

Member Function Documentation

◆ name()

std::string gem5::VirtIORng::RngQueue::name ( ) const

inline

Definition at line 86 of file rng.hh.

References gem5::Named::name(), and parent.

◆ onNotify()

void gem5::VirtIORng::RngQueue::onNotify ( )

inlinevirtual

Notify queue of pending events.

This method is called by VirtIODeviceBase::onNotify() to notify the device model of pending data in a virtqueue. The default implementation of this method iterates over the available descriptor chains and calls onNotifyDescriptor() for every new incoming chain.

Device models should normally overload one of onNotify() and onNotifyDescriptor().

Reimplemented from gem5::VirtQueue.

Definition at line 81 of file rng.hh.

References trySend().

◆ trySend()

void gem5::VirtIORng::RngQueue::trySend ( )

Try to send data pending data from the terminal.

Definition at line 74 of file rng.cc.

References gem5::ArmISA::d, DPRINTF, gem5::ArmISA::len, gem5::Random::random(), and gem5::random_mt.

Referenced by onNotify().

Member Data Documentation

◆ parent

VirtIORng& gem5::VirtIORng::RngQueue::parent

protected

Definition at line 89 of file rng.hh.

Referenced by name().

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

dev/virtio/rng.hh
dev/virtio/rng.cc

Public Member Functions

Protected Attributes

Additional Inherited Members