apic.cpp File Reference

#include "precompiled.h"
#include "lib/sysdep/arch/x86_x64/apic.h"
#include "lib/bits.h"
#include "lib/module_init.h"
#include "lib/sysdep/cpu.h"
#include "lib/sysdep/os_cpu.h"
#include "lib/sysdep/arch/x86_x64/x86_x64.h"
#include <algorithm>

Include dependency graph for apic.cpp:

Functions
ApicId	GetApicId ()
static Status	GetAndValidateApicIds ()
static Status	InitApicIds ()
bool	AreApicIdsReliable ()
bool	IsProcessorKnown (ApicId apicId)
static size_t	IndexFromApicId (const ApicId *apicIds, ApicId apicId)
size_t	ProcessorFromApicId (ApicId apicId)
size_t	ContiguousIdFromApicId (ApicId apicId)
static ApicId	ApicIdFromIndex (const ApicId *apicIds, size_t index)
ApicId	ApicIdFromProcessor (size_t processor)
ApicId	ApicIdFromContiguousId (size_t contiguousId)

Variables
static size_t	numIds
static ApicId	processorApicIds [os_cpu_MaxProcessors]
static ApicId	sortedApicIds [os_cpu_MaxProcessors]
static ModuleInitState	apicInitState { 0 }

Function Documentation

ApicIdFromContiguousId()

ApicId ApicIdFromContiguousId

(

size_t

contiguousId

)

ApicIdFromIndex()

static ApicId ApicIdFromIndex ( const ApicId *  apicIds, size_t  index  )

static

ApicIdFromProcessor()

ApicId ApicIdFromProcessor

(

size_t

processor

)

AreApicIdsReliable()

bool AreApicIdsReliable

(

)

ContiguousIdFromApicId()

size_t ContiguousIdFromApicId

(

ApicId

apicId

)

GetAndValidateApicIds()

static Status GetAndValidateApicIds ( )

static

GetApicId()

ApicId GetApicId

(

)

Returns

APIC ID of the currently executing processor or zero if the platform does not have an xAPIC (i.e. 7th generation x86 or below).

rationale: the alternative of accessing the APIC mmio registers is not feasible. We also don't want to interfere with the OS's constant use of the APIC registers.

IndexFromApicId()

static size_t IndexFromApicId ( const ApicId *  apicIds, ApicId  apicId  )

static

InitApicIds()

static Status InitApicIds ( )

static

IsProcessorKnown()

bool IsProcessorKnown

(

ApicId

apicId

)

ProcessorFromApicId()

size_t ProcessorFromApicId

(

ApicId

apicId

)

Variable Documentation

apicInitState

ModuleInitState apicInitState { 0 }

static

numIds

size_t numIds

static

processorApicIds

ApicId processorApicIds[os_cpu_MaxProcessors]

static

sortedApicIds

ApicId sortedApicIds[os_cpu_MaxProcessors]

static