Virtqueue for disk requests. More...

#include <block.hh>

Inheritance diagram for gem5::VirtIOBlock::RequestQueue:

Public Member Functions
	RequestQueue (PortProxy &proxy, ByteOrder bo, uint16_t size, VirtIOBlock &_parent)

virtual	~RequestQueue ()

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

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	onNotify ()
	Notify queue of pending events.

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
VirtIOBlock &	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 disk requests.

Definition at line 166 of file block.hh.

Constructor & Destructor Documentation

◆ RequestQueue()

gem5::VirtIOBlock::RequestQueue::RequestQueue	(	PortProxy &	proxy,
		ByteOrder	bo,
		uint16_t	size,
		VirtIOBlock &	_parent )

inline

Definition at line 170 of file block.hh.

◆ ~RequestQueue()

virtual gem5::VirtIOBlock::RequestQueue::~RequestQueue ( )

inlinevirtual

Definition at line 173 of file block.hh.

Member Function Documentation

◆ name()

std::string gem5::VirtIOBlock::RequestQueue::name ( ) const

inline

Definition at line 177 of file block.hh.

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

◆ onNotifyDescriptor()

void gem5::VirtIOBlock::RequestQueue::onNotifyDescriptor ( VirtDescriptor * desc )

virtual

Notify queue of pending incoming descriptor.

This method is called by the default implementation of onNotify() to notify the device model of pending data in a descriptor chain.

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

Reimplemented from gem5::VirtQueue.

Definition at line 127 of file block.cc.

Member Data Documentation

◆ parent

VirtIOBlock& gem5::VirtIOBlock::RequestQueue::parent

protected

Definition at line 180 of file block.hh.

Referenced by name(), and onNotifyDescriptor().

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

dev/virtio/block.hh
dev/virtio/block.cc

Public Member Functions

Protected Attributes

Additional Inherited Members