Implementation of the PhysicalMemoryManager for common x86. More...

#include <PhysicalMemoryManager.h>

Inheritance diagram for HostedPhysicalMemoryManager:

Collaboration diagram for HostedPhysicalMemoryManager:

Classes
struct	page

class	PageHashable

class	PageStack
	The Stack of pages (below4GB, below64GB, no constraint). More...

Public Member Functions
virtual physical_uintptr_t	allocatePage ()

virtual void	freePage (physical_uintptr_t page)

virtual bool	allocateRegion (MemoryRegion &Region, size_t cPages, size_t pageConstraints, size_t Flags, physical_uintptr_t start=-1)

virtual void	pin (physical_uintptr_t page)

void	initialise (const BootstrapStruct_t &Info) INITIALISATION_ONLY

void	initialisationDone ()

Public Member Functions inherited from PhysicalMemoryManager
virtual physical_uintptr_t	allocatePage (size_t pageConstraints=0)=0

void	allocateMemoryRegionList (Vector< MemoryRegionInfo * > &MemoryRegions)

void	freeMemoryRegionList (Vector< MemoryRegionInfo * > &MemoryRegions)

virtual size_t	freePageCount () const

Static Public Member Functions
static HostedPhysicalMemoryManager &	instance ()

Static Public Member Functions inherited from PhysicalMemoryManager
static PhysicalMemoryManager &	instance ()

static size_t	getPageSize () PURE

Protected Member Functions
	HostedPhysicalMemoryManager () INITIALISATION_ONLY

virtual	~HostedPhysicalMemoryManager ()

Protected Member Functions inherited from PhysicalMemoryManager
	PhysicalMemoryManager ()

virtual	~PhysicalMemoryManager ()

Private Member Functions
	HostedPhysicalMemoryManager (const HostedPhysicalMemoryManager &)

HostedPhysicalMemoryManager &	operator= (const HostedPhysicalMemoryManager &)

int	getBackingFile () const

void	unmapRegion (MemoryRegion *pRegion)

virtual void	freePageUnlocked (physical_uintptr_t page)

Private Attributes
PageStack	m_PageStack

RangeList< uint64_t >	m_PhysicalRanges

RangeList< uintptr_t >	m_MemoryRegions

Spinlock	m_Lock

Spinlock	m_RegionLock

struct page *	m_PageMetadata

int	m_BackingFile

Static Private Attributes
static HostedPhysicalMemoryManager	m_Instance

Friends
class	CacheManager

class	Cache

class	HostedVirtualAddressSpace

Additional Inherited Members
Static Public Attributes inherited from PhysicalMemoryManager
static const size_t	continuous = 1 << 0

static const size_t	nonRamMemory = 1 << 1

static const size_t	force = 1 << 2

static const size_t	virtualOnly = 1 << 3

static const size_t	below1MB = 1 << 4

static const size_t	below16MB = 1 << 5

static const size_t	below4GB = 1 << 6

static const size_t	below64GB = 1 << 7

static const size_t	addressConstraints

static const size_t	anonymous = 1 << 8

Protected Attributes inherited from PhysicalMemoryManager
Vector< MemoryRegion * >	m_MemoryRegions

Detailed Description

Implementation of the PhysicalMemoryManager for common x86.

The common x86 implementation of the PhysicalMemoryManager

Definition at line 37 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

Constructor & Destructor Documentation

HostedPhysicalMemoryManager::HostedPhysicalMemoryManager ( )

protected

The constructor

Definition at line 353 of file hosted/PhysicalMemoryManager.cc.

References m_BackingFile.

Referenced by instance().

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HostedPhysicalMemoryManager::~HostedPhysicalMemoryManager ( )

protectedvirtual

The destructor

Definition at line 363 of file hosted/PhysicalMemoryManager.cc.

References Vector< T >::clear(), m_BackingFile, PhysicalMemoryManager::m_MemoryRegions, and m_PageMetadata.

Referenced by instance().

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HostedPhysicalMemoryManager::HostedPhysicalMemoryManager ( const HostedPhysicalMemoryManager & )

private

The copy-constructor

Note: Not implemented (singleton)

Member Function Documentation

bool HostedPhysicalMemoryManager::allocateRegion	(	MemoryRegion &	Region,
		size_t	cPages,
		size_t	pageConstraints,
		size_t	Flags,
		physical_uintptr_t	start = `-1`
	)

virtual

Allocate a memory-region with specific constraints the pages need to fullfill.

Parameters

[in]	Region	reference to the MemoryRegion object
[in]	cPages	the number of pages to allocate for the MemoryRegion object
[in]	pageConstraints	the constraints the pages have to fullfill
[in]	Flags	flags from the VirtualAddressSpace class namespace
[in]	start	the physical address of the beginning of the region (optional)

Returns: true, if a valid MemoryRegion object is created, false otherwise

Implements PhysicalMemoryManager.

Definition at line 198 of file hosted/PhysicalMemoryManager.cc.

References PhysicalMemoryManager::getPageSize(), Processor::information(), PhysicalMemoryManager::m_MemoryRegions, MemoryRegion::m_PhysicalAddress, MemoryRegion::m_Size, MemoryRegion::m_VirtualAddress, VirtualAddressSpace::map(), panic(), Vector< T >::pushBack(), and WARNING.

Referenced by instance().

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void HostedPhysicalMemoryManager::freePage ( physical_uintptr_t page )

virtual

Free a page allocated with the allocatePage() function

Parameters

[in] page physical address of the page

Implements PhysicalMemoryManager.

Definition at line 132 of file hosted/PhysicalMemoryManager.cc.

Referenced by instance().

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void HostedPhysicalMemoryManager::freePageUnlocked ( physical_uintptr_t page )

privatevirtual

Same as freePage, but without the lock. Will panic if the lock is unlocked.

Note: Use in the wrong place and you die.

Implements PhysicalMemoryManager.

Definition at line 138 of file hosted/PhysicalMemoryManager.cc.

References FATAL.

Referenced by instance().

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void HostedPhysicalMemoryManager::initialisationDone ( )

Unmap & free the .init section

Definition at line 348 of file hosted/PhysicalMemoryManager.cc.

References NOTICE.

Referenced by Processor::initialisationDone(), and instance().

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void HostedPhysicalMemoryManager::initialise ( const BootstrapStruct_t & Info )

Initialise the page stack

Parameters

[in] Info reference to the multiboot information structure

Definition at line 314 of file hosted/PhysicalMemoryManager.cc.

References Hex, and NOTICE.

Referenced by Processor::initialisationDone(), and instance().

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static HostedPhysicalMemoryManager& HostedPhysicalMemoryManager::instance ( )

inlinestatic

Get the HostedPhysicalMemoryManager instance

Returns: instance of the HostedPhysicalMemoryManager

Definition at line 47 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

References allocateRegion(), freePage(), freePageUnlocked(), HostedPhysicalMemoryManager(), INITIALISATION_ONLY, initialisationDone(), initialise(), m_BackingFile, m_Instance, operator=(), pin(), unmapRegion(), and ~HostedPhysicalMemoryManager().

Referenced by Processor::initialisationDone(), HostedVirtualAddressSpace::map(), and HostedVirtualAddressSpace::switchAddressSpace().

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HostedPhysicalMemoryManager& HostedPhysicalMemoryManager::operator= ( const HostedPhysicalMemoryManager & )

private

The copy-constructor

Note: Not implemented (singleton)

Referenced by instance().

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void HostedPhysicalMemoryManager::pin ( physical_uintptr_t page )

virtual

"Pin" a page, increasing its refcount.

Every time a pinned page is passed to freePage, its refcount is decreased, and the page is only freed once the refcount hits zero.

Note that an unpin function is not provided, as freePage offers the right semantics.

Implements PhysicalMemoryManager.

Definition at line 176 of file hosted/PhysicalMemoryManager.cc.

Referenced by instance().

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void HostedPhysicalMemoryManager::unmapRegion ( MemoryRegion * pRegion )

privatevirtual

Unmaps a memory region - called ONLY from MemoryRegion's destructor.

Implements PhysicalMemoryManager.

Definition at line 373 of file hosted/PhysicalMemoryManager.cc.

References Vector< T >::end(), Vector< T >::erase(), FATAL, RangeList< T, Reversed >::free(), HostedPhysicalMemoryManager::PageStack::free(), VirtualAddressSpace::getKernelAddressSpace(), VirtualAddressSpace::getMapping(), PhysicalMemoryManager::getPageSize(), VirtualAddressSpace::isMapped(), PhysicalMemoryManager::m_MemoryRegions, m_MemoryRegions, m_PageStack, m_PhysicalRanges, MemoryRegion::physicalAddress(), MemoryRegion::size(), VirtualAddressSpace::unmap(), and MemoryRegion::virtualAddress().

Referenced by instance().

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Friends And Related Function Documentation

friend class HostedVirtualAddressSpace

friend

For getBackingFile()

Definition at line 42 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

Member Data Documentation

int HostedPhysicalMemoryManager::m_BackingFile

private

Hosted: backing file for physical memory.

Definition at line 209 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

Referenced by HostedPhysicalMemoryManager(), instance(), and ~HostedPhysicalMemoryManager().

HostedPhysicalMemoryManager HostedPhysicalMemoryManager::m_Instance

staticprivate

Static instance.

Definition at line 212 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

Referenced by instance().

Spinlock HostedPhysicalMemoryManager::m_Lock

private

To guard against multiprocessor reentrancy.

Definition at line 162 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

RangeList<uintptr_t> HostedPhysicalMemoryManager::m_MemoryRegions

private

Virtual-memory available for MemoryRegions

Todo:: rename this member (conflicts with PhysicalMemoryManager::m_MemoryRegions)

Definition at line 159 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

Referenced by unmapRegion().

struct page* HostedPhysicalMemoryManager::m_PageMetadata

private

Page metadata table

Definition at line 206 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

Referenced by ~HostedPhysicalMemoryManager().

PageStack HostedPhysicalMemoryManager::m_PageStack

private

The page stack

Definition at line 151 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

Referenced by unmapRegion().

RangeList<uint64_t> HostedPhysicalMemoryManager::m_PhysicalRanges

private

RangeList of free physical memory

Definition at line 154 of file kernel/core/processor/hosted/PhysicalMemoryManager.h.

Referenced by unmapRegion().

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

Classes

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation