PciVirtualFunctions Class Reference

#include <PciVirtualFunctions.h>

Collaboration diagram for PciVirtualFunctions:

Public Member Functions
	PciVirtualFunctions (Device *pf)
bool	enable (size_t count)
Device *	function (size_t index) const
size_t	count () const
bool	disable ()

Static Public Member Functions
static bool	bar (Device *vf, uint8_t index, uint64_t &pciBase, uint64_t &bytes)

Private Member Functions
	PciVirtualFunctions (const PciVirtualFunctions &)=delete
PciVirtualFunctions &	operator= (const PciVirtualFunctions &)=delete
void	reclaim ()

Private Attributes
Device *	m_Pf
Device *	m_Functions [MaxFunctions] = {}
bool	m_Present [MaxFunctions] = {}
bool	m_Reserved [6] = {}
size_t	m_PlannedCount = 0
size_t	m_Count = 0
uint16_t	m_Offset = 0
uint16_t	m_NextCapability = 0
PciSriov::State	m_Original
PciSriov::Geometry	m_Bars
bool	m_Touched = false
bool	m_EnableAttempted = false

Static Private Attributes
static constexpr size_t	MaxFunctions = 8

Detailed Description

Owns an explicitly enabled, isolated group of VFs for one physical function. The PF and this group must outlive all VF users. The caller must quiesce the PF and clear its bus-master bit before enable(). VF controllers are children of the returned off-tree nodes and must be removed before disable(). The caller serializes all VF users with enable/disable.

VF Address entries named barN describe CPU-translated slices of PF VF BARs. The actual VF configuration BARs remain zero; drivers must use these assigned ranges without probing or rewriting VF BARs. Isolation covers requester DMA, not peer-to-peer routing or ACS.

Definition at line 21 of file PciVirtualFunctions.h.

Constructor & Destructor Documentation

PciVirtualFunctions()

PciVirtualFunctions::PciVirtualFunctions ( Device *  pf )

explicit

Definition at line 83 of file Sriov.cc.

~PciVirtualFunctions()

PciVirtualFunctions::~PciVirtualFunctions

(

)

Definition at line 85 of file Sriov.cc.

Member Function Documentation

bar()

bool PciVirtualFunctions::bar ( Device *  vf, uint8_t  index, uint64_t &  pciBase, uint64_t &  bytes  )

static

Definition at line 339 of file Sriov.cc.

count()

size_t PciVirtualFunctions::count

(

)

const

Definition at line 256 of file Sriov.cc.

disable()

bool PciVirtualFunctions::disable

(

)

Definition at line 261 of file Sriov.cc.

enable()

bool PciVirtualFunctions::enable

(

size_t

count

)

Definition at line 91 of file Sriov.cc.

function()

Device * PciVirtualFunctions::function

(

size_t

index

)

const

Definition at line 251 of file Sriov.cc.

reclaim()

void PciVirtualFunctions::reclaim ( )

private

Definition at line 277 of file Sriov.cc.

Member Data Documentation

m_Bars

PciSriov::Geometry PciVirtualFunctions::m_Bars

private

Definition at line 50 of file PciVirtualFunctions.h.

m_Count

size_t PciVirtualFunctions::m_Count = 0

private

Definition at line 46 of file PciVirtualFunctions.h.

m_EnableAttempted

bool PciVirtualFunctions::m_EnableAttempted = false

private

Definition at line 52 of file PciVirtualFunctions.h.

m_Functions

Device* PciVirtualFunctions::m_Functions[MaxFunctions] = {}

private

Definition at line 42 of file PciVirtualFunctions.h.

m_NextCapability

uint16_t PciVirtualFunctions::m_NextCapability = 0

private

Definition at line 48 of file PciVirtualFunctions.h.

m_Offset

uint16_t PciVirtualFunctions::m_Offset = 0

private

Definition at line 47 of file PciVirtualFunctions.h.

m_Original

PciSriov::State PciVirtualFunctions::m_Original

private

Definition at line 49 of file PciVirtualFunctions.h.

m_Pf

Device* PciVirtualFunctions::m_Pf

private

Definition at line 41 of file PciVirtualFunctions.h.

m_PlannedCount

size_t PciVirtualFunctions::m_PlannedCount = 0

private

Definition at line 45 of file PciVirtualFunctions.h.

m_Present

bool PciVirtualFunctions::m_Present[MaxFunctions] = {}

private

Definition at line 43 of file PciVirtualFunctions.h.

m_Reserved

bool PciVirtualFunctions::m_Reserved[6] = {}

private

Definition at line 44 of file PciVirtualFunctions.h.

m_Touched

bool PciVirtualFunctions::m_Touched = false

private

Definition at line 51 of file PciVirtualFunctions.h.

MaxFunctions

constexpr size_t PciVirtualFunctions::MaxFunctions = 8

staticconstexprprivate

Definition at line 40 of file PciVirtualFunctions.h.

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

• PciVirtualFunctions.h
• Sriov.cc