Inheritance diagram for VirtioBlkDisk:

Collaboration diagram for VirtioBlkDisk:

Public Member Functions
	VirtioBlkDisk (VirtioBlkController *controller)

void	getName (String &name) override

size_t	getSize () const override
	Gets the size of the disk.

size_t	getBlockCount () const override

size_t	getBlockSize () const override
	Gets the preferred I/O extent of the disk.

size_t	getNativeBlockSize () const override

bool	writeFrom (uint64_t location, const void *buffer, size_t length) override

bool	writeFromBatch (WriteBuffer *buffers, size_t count) override

void	write (uint64_t location) override

bool	zero (uint64_t location, size_t length) override

uint64_t	doRead (uint64_t location) override

uint64_t	doWrite (uint64_t location) override

uint64_t	doWriteDirect (uint64_t location, uintptr_t page) override

uint64_t	doSync (uint64_t location) override

Public Member Functions inherited from ScsiDisk
	ScsiDisk (size_t cacheConstraints=PhysicalMemoryManager::below4GB)

void	shutdownCache ()

virtual void	shutdownDeviceCache ()

bool	hasNoCacheLoans ()

bool	initialise (class ScsiController *pController, size_t nUnit)

virtual BufferView	read (uint64_t location)

bool	readInto (uint64_t location, void *buffer, size_t length) override

bool	readIntoBatch (ReadBuffer *buffers, size_t count) override

bool	syncData () override

virtual void	flush (uint64_t location)
	Flush a cached page to disk.

virtual bool	sync (uint64_t location, bool async)

virtual MUST_USE_RESULT bool	syncAll ()

bool	syncPages (const uint64_t *locations, size_t count) override

virtual MUST_USE_RESULT bool	retireCachePage (uint64_t location)

virtual void	align (uint64_t location)
	Sets the page boundary alignment after a specific location on the disk.

virtual uint64_t	doWriteDirectPhysical (uint64_t location, uintptr_t page, physical_uintptr_t physical)

virtual PagingStatus	doPagingTransfer (PagingOperation operation, uint64_t offset, void *page)

virtual bool	pin (uint64_t location)
	Pins a cache page.

virtual void	unpin (uint64_t location)

Public Member Functions inherited from Disk
	Disk (Device *p)

virtual Disk *	physicalDisk ()

bool	acquireUse (DiskUse &use)

uint32_t	endpointId ()

virtual bool	getPartitionUuid (String &uuid) const

virtual bool	getPartitionLabel (String &label) const

virtual PagingStatus	preparePagingTransport (PagingTransport *&transport)

void	retireEndpoint ()

bool	tryCloseEndpoint ()

void	reopenEndpoint ()

virtual Type	getType ()

virtual SubType	getSubType ()

virtual void	dump (String &str)

virtual DiskReadView	readView (uint64_t location)

virtual DiskWriteView	writeView (uint64_t location)

MUST_USE_RESULT bool	readViews (uint64_t location, size_t length, BufferViewSequence &views)

void	unpinViews (uint64_t location, BufferViewSequence &views)

virtual bool	cacheIsCritical ()
	Whether or not the cache is critical and cannot be flushed or deleted.

Public Member Functions inherited from Device
	Device (Device *p)

Device *	getParent () const

void	setParent (Device *p)

virtual const String &	getSpecificType ()

virtual void	setSpecificType (String str)

void	setPciPosition (uint32_t bus, uint32_t device, uint32_t func)

void	setPciIdentifiers (uint8_t classCode, uint8_t subclassCode, uint16_t vendorId, uint16_t deviceId, uint8_t progIf)

void	setPciConfigHeader (const PciBus::ConfigSpace &space)

PciBus::ConfigSpace	getPciConfigHeader () const

uint8_t	getPciClassCode ()

uint8_t	getPciSubclassCode ()

uint16_t	getPciVendorId ()

uint16_t	getPciDeviceId ()

uint8_t	getPciProgInterface ()

uint32_t	getPciBusPosition ()

uint32_t	getPciDevicePosition ()

uint32_t	getPciFunctionNumber ()

Device *	getPhysicalFunction () const

size_t	getVirtualFunctionIndex () const

void	setVirtualFunction (Device *physicalFunction, size_t index)

virtual Vector< Address * > &	addresses ()

virtual uintptr_t	getInterruptNumber ()

virtual void	setInterruptNumber (uintptr_t n)

void	addChild (Device *pDevice)

Device *	getChild (size_t n)

size_t	getNumChildren ()

void	removeChild (size_t n)

void	removeChild (Device *d)

void	replaceChild (Device src, Device dest)

Protected Member Functions
BufferView	acquireView (uint64_t location, bool writable, uint64_t &token) override

bool	supportsBufferTransfers () const override

bool	transferBuffer (uint64_t location, void *buffer, size_t length, bool writing) override

Protected Member Functions inherited from ScsiDisk
void	releaseView (uint64_t token, bool writable) override

virtual bool	supportsDirectCacheWrite () const

virtual Device *	dmaDevice () const

virtual bool	transferReadBuffers (ReadBuffer *buffers, size_t count)

virtual bool	transferWriteBuffers (WriteBuffer *buffers, size_t count)

ScsiController *	acquirePagingController (OperationBarrier::Lease &use)

PagingStatus	preparePagingCache (PagingTransport &transport)

virtual size_t	getCacheFillSize () const

size_t	getCacheFillLength (uint64_t location) const

Cache &	getCache ()

Inquiry *	getInquiry () const

Protected Member Functions inherited from Disk
void	reserveEndpoint ()

void	publishEndpoint ()

Protected Member Functions inherited from Device
	NOT_COPYABLE_OR_ASSIGNABLE (Device)

Private Member Functions
size_t	validPageLength (uint64_t location) const

Private Attributes
VirtioBlkController *	m_Controller

Friends
class	VirtioBlkController

Additional Inherited Members
Public Types inherited from Disk
enum	SubType { ATA = 0 , ATAPI }

Public Types inherited from Device
enum	Type { Generic , Root , Disk , Bus , Display , Network , Sound , Console , Mouse , Controller , UsbController , UsbGeneric , UsbContainer }

typedef Device (	Callback) (Device *)

Static Public Member Functions inherited from Device
static bool	treeLockHeldByCurrentThread ()

static void	foreach (Callback callback, Device *root=0)

template<class F , class... Args>
static void	foreach (pedigree_std::Callable< F > &callback, Device *root, Args... args)

static void	addToRoot (Device *device)

static void	searchByVendorId (uint16_t vendorId, void(callback)(Device ), Device *root=0)

static void	searchByVendorIdAndDeviceId (uint16_t vendorId, uint16_t deviceId, void(callback)(Device ), Device *root=0)

static void	searchByClass (uint16_t classCode, void(callback)(Device ), Device *root=0)

static void	searchByClassAndSubclass (uint16_t classCode, uint16_t subclassCode, void(callback)(Device ), Device *root=0)

static void	searchByClassSubclassAndProgInterface (uint16_t classCode, uint16_t subclassCode, uint8_t progInterface, void(callback)(Device ), Device *root=0)

Public Attributes inherited from ScsiDisk
struct ScsiDisk::Sense	PACKED

struct ScsiDisk::Inquiry	PACKED

struct ScsiDisk::Capacity	PACKED

Static Public Attributes inherited from ScsiDisk
static constexpr uint64_t	SyncWholeDevice = ~uint64_t{0}

Static Public Attributes inherited from Disk
static constexpr size_t	MaxReadBuffers = 32

static constexpr size_t	MaxWriteBuffers = 32

static constexpr size_t	MaxSyncPages = 64

Static Protected Member Functions inherited from ScsiDisk
static bool	syncCacheBatch (const Cache::WritebackPage pages, size_t count, void context)

Static Protected Member Functions inherited from Device
static Device &	root ()

Protected Attributes inherited from Device
Vector< Address * >	m_Addresses

Vector< Device * >	m_Children

Device *	m_pParent

Device *	m_PhysicalFunction

size_t	m_VirtualFunctionIndex

uintptr_t	m_InterruptNumber

String	m_SpecificType

PciBus::ConfigSpace	m_ConfigHeader

uint8_t	m_ClassCode

uint8_t	m_SubclassCode

uint16_t	m_VendorId

uint16_t	m_DeviceId

uint8_t	m_ProgInterface

uint32_t	m_PciBusPos

uint32_t	m_PciDevicePos

uint32_t	m_PciFunctionNum

Static Protected Attributes inherited from Device
static Device	m_Root

static Mutex	m_TreeLock

Detailed Description

Definition at line 9 of file VirtioBlkDisk.h.

Constructor & Destructor Documentation

◆ VirtioBlkDisk()

VirtioBlkDisk::VirtioBlkDisk ( VirtioBlkController * controller )

explicit

Definition at line 9 of file VirtioBlkDisk.cc.

◆ ~VirtioBlkDisk()

VirtioBlkDisk::~VirtioBlkDisk ( )

override

Definition at line 14 of file VirtioBlkDisk.cc.

Member Function Documentation

◆ acquireView()

BufferView VirtioBlkDisk::acquireView	(	uint64_t	location,
		bool	writable,
		uint64_t &	token
	)

overrideprotectedvirtual

Reimplemented from ScsiDisk.

Definition at line 67 of file VirtioBlkDisk.cc.

◆ doRead()

uint64_t VirtioBlkDisk::doRead ( uint64_t location )

overridevirtual

Reimplemented from ScsiDisk.

Definition at line 84 of file VirtioBlkDisk.cc.

◆ doSync()

uint64_t VirtioBlkDisk::doSync ( uint64_t location )

overridevirtual

Reimplemented from ScsiDisk.

Definition at line 141 of file VirtioBlkDisk.cc.

◆ doWrite()

uint64_t VirtioBlkDisk::doWrite ( uint64_t location )

overridevirtual

Reimplemented from ScsiDisk.

Definition at line 113 of file VirtioBlkDisk.cc.

◆ doWriteDirect()

uint64_t VirtioBlkDisk::doWriteDirect	(	uint64_t	location,
		uintptr_t	page
	)

overridevirtual

Writes one caller-borrowed page without acquiring cache ownership.

Reimplemented from ScsiDisk.

Definition at line 129 of file VirtioBlkDisk.cc.

◆ getBlockCount()

size_t VirtioBlkDisk::getBlockCount ( ) const

overridevirtual

Reimplemented from ScsiDisk.

Definition at line 27 of file VirtioBlkDisk.cc.

◆ getBlockSize()

size_t VirtioBlkDisk::getBlockSize ( ) const

overridevirtual

Gets the preferred I/O extent of the disk.

This may describe a native device block or a larger cache-fill/readahead extent, depending on the implementation. It is independent of the cache page boundary reported by BufferView::size().

Reimplemented from ScsiDisk.

Definition at line 31 of file VirtioBlkDisk.cc.

References TargetInfo::getPageSize().

◆ getName()

void VirtioBlkDisk::getName ( String & str )

overridevirtual

Stores the device's name in str.

Reimplemented from ScsiDisk.

Definition at line 19 of file VirtioBlkDisk.cc.

◆ getNativeBlockSize()

size_t VirtioBlkDisk::getNativeBlockSize ( ) const

overridevirtual

Retrieves the native block size - that is, the logical block size. This differs from the preferred I/O/cache-fill extent.

Reimplemented from ScsiDisk.

Definition at line 35 of file VirtioBlkDisk.cc.

◆ getSize()

size_t VirtioBlkDisk::getSize ( ) const

overridevirtual

Gets the size of the disk.

This is the size in bytes of the disk. Reads or writes beyond this size will fail.

Reimplemented from ScsiDisk.

Definition at line 23 of file VirtioBlkDisk.cc.

Referenced by zero().

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◆ supportsBufferTransfers()

bool VirtioBlkDisk::supportsBufferTransfers ( ) const

inlineoverrideprotectedvirtual

Reimplemented from ScsiDisk.

Definition at line 31 of file VirtioBlkDisk.h.

◆ transferBuffer()

bool VirtioBlkDisk::transferBuffer	(	uint64_t	location,
		void *	buffer,
		size_t	length,
		bool	writing
	)

overrideprotectedvirtual

Reimplemented from ScsiDisk.

Definition at line 150 of file VirtioBlkDisk.cc.

◆ validPageLength()

size_t VirtioBlkDisk::validPageLength ( uint64_t location ) const

private

Definition at line 74 of file VirtioBlkDisk.cc.

◆ write()

void VirtioBlkDisk::write ( uint64_t location )

overridevirtual

This function schedules a cache writeback of the given location. The data to be written back is fetched from the cache (pointer returned by read() ).

Parameters

location The offset from the start of the device, in bytes, to start the write. Must be 512byte aligned.

Reimplemented from ScsiDisk.

Definition at line 56 of file VirtioBlkDisk.cc.

References ScsiDisk::write().

◆ writeFrom()

bool VirtioBlkDisk::writeFrom	(	uint64_t	location,
		const void *	buffer,
		size_t	length
	)

overridevirtual

Reimplemented from ScsiDisk.

Definition at line 39 of file VirtioBlkDisk.cc.

◆ writeFromBatch()

bool VirtioBlkDisk::writeFromBatch	(	WriteBuffer *	buffers,
		size_t	count
	)

overridevirtual

Writes caller-owned buffers, draining all issued I/O before return. complete reports each fully transferred range, including on partial failure. Storage must remain valid until return; syncData() supplies durability.

Reimplemented from ScsiDisk.

Definition at line 46 of file VirtioBlkDisk.cc.

References ScsiDisk::writeFromBatch().

◆ zero()

bool VirtioBlkDisk::zero	(	uint64_t	location,
		size_t	length
	)

overridevirtual

Zeroes a range in the cache; syncAll supplies durability. A failed call may have zeroed a prefix. Full cache pages need no old contents read.

Reimplemented from ScsiDisk.

Definition at line 62 of file VirtioBlkDisk.cc.

References getSize(), and ScsiDisk::zero().

Friends And Related Symbol Documentation

◆ VirtioBlkController

friend class VirtioBlkController

friend

Definition at line 37 of file VirtioBlkDisk.h.

Member Data Documentation

◆ m_Controller

VirtioBlkController* VirtioBlkDisk::m_Controller

private

Definition at line 40 of file VirtioBlkDisk.h.

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

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ VirtioBlkDisk()

◆ ~VirtioBlkDisk()

Member Function Documentation

◆ acquireView()

◆ doRead()

◆ doSync()

◆ doWrite()

◆ doWriteDirect()

◆ getBlockCount()

◆ getBlockSize()

◆ getName()

◆ getNativeBlockSize()

◆ getSize()

◆ supportsBufferTransfers()

◆ transferBuffer()

◆ validPageLength()

◆ write()

◆ writeFrom()

◆ writeFromBatch()

◆ zero()

Friends And Related Symbol Documentation

◆ VirtioBlkController

Member Data Documentation

◆ m_Controller