apic.h File Reference

x86 Local APIC register definitions and utility functions. More...

#include <xtf/types.h>
#include <xen/errno.h>
#include <arch/msr-index.h>

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Macros
#define	APIC_ID   0x020
#define	APIC_LVR   0x030
#define	APIC_SPIV   0x0f0
#define	APIC_SPIV_APIC_ENABLED   0x00100
#define	APIC_ICR   0x300
#define	APIC_DM_NMI   0x00400
#define	APIC_ICR_BUSY   0x01000
#define	APIC_DEST_SELF   0x40000
#define	APIC_ICR2   0x310
#define	APIC_DEFAULT_BASE   0xfee00000ul

Enumerations
enum	apic_mode {   APIC_MODE_UNKNOWN, APIC_MODE_NONE, APIC_MODE_DISABLED, APIC_MODE_XAPIC,   APIC_MODE_X2APIC }

Functions
int	apic_init (enum apic_mode mode)
	Discover and initialise the local APIC to the requested mode. More...
static uint32_t	apic_mmio_read (unsigned int reg)
static void	apic_mmio_write (unsigned int reg, uint32_t val)
static void	apic_mmio_icr_write (uint64_t val)
static uint32_t	apic_msr_read (unsigned int reg)
static void	apic_msr_write (unsigned int reg, uint32_t val)
static void	apic_msr_icr_write (uint64_t val)
static uint32_t	apic_read (unsigned int reg)
static void	apic_write (unsigned int reg, uint32_t val)
static void	apic_icr_write (uint64_t val)

Variables
enum apic_mode	cur_apic_mode

Detailed Description

x86 Local APIC register definitions and utility functions.

The xAPIC MMIO window is expected to be in its default location for the benefit of unpaged environments.

Definition in file apic.h.

Macro Definition Documentation

APIC_ID

#define APIC_ID   0x020

Definition at line 19 of file apic.h.

APIC_LVR

#define APIC_LVR   0x030

Definition at line 20 of file apic.h.

APIC_SPIV

#define APIC_SPIV   0x0f0

Definition at line 21 of file apic.h.

APIC_SPIV_APIC_ENABLED

#define APIC_SPIV_APIC_ENABLED   0x00100

Definition at line 22 of file apic.h.

APIC_ICR

#define APIC_ICR   0x300

Definition at line 24 of file apic.h.

APIC_DM_NMI

#define APIC_DM_NMI   0x00400

Definition at line 25 of file apic.h.

APIC_ICR_BUSY

#define APIC_ICR_BUSY   0x01000

Definition at line 26 of file apic.h.

APIC_DEST_SELF

#define APIC_DEST_SELF   0x40000

Definition at line 27 of file apic.h.

APIC_ICR2

#define APIC_ICR2   0x310

Definition at line 29 of file apic.h.

APIC_DEFAULT_BASE

#define APIC_DEFAULT_BASE   0xfee00000ul

Definition at line 31 of file apic.h.

Enumeration Type Documentation

apic_mode

enum apic_mode

Enumerator
APIC_MODE_UNKNOWN
APIC_MODE_NONE
APIC_MODE_DISABLED
APIC_MODE_XAPIC
APIC_MODE_X2APIC

Definition at line 35 of file apic.h.

Function Documentation

apic_init()

int apic_init

(

enum apic_mode

mode

)

Discover and initialise the local APIC to the requested mode.

May fail if there is no APIC, or the requested mode is not available.

Definition at line 33 of file apic.c.

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apic_mmio_read()

static uint32_t apic_mmio_read ( unsigned int  reg )

inlinestatic

Definition at line 49 of file apic.h.

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apic_mmio_write()

static void apic_mmio_write ( unsigned int  reg, uint32_t  val  )

inlinestatic

Definition at line 54 of file apic.h.

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apic_mmio_icr_write()

static void apic_mmio_icr_write ( uint64_t  val )

inlinestatic

Definition at line 59 of file apic.h.

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apic_msr_read()

static uint32_t apic_msr_read ( unsigned int  reg )

inlinestatic

Definition at line 65 of file apic.h.

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apic_msr_write()

static void apic_msr_write ( unsigned int  reg, uint32_t  val  )

inlinestatic

Definition at line 75 of file apic.h.

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apic_msr_icr_write()

static void apic_msr_icr_write ( uint64_t  val )

inlinestatic

Definition at line 82 of file apic.h.

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apic_read()

static uint32_t apic_read ( unsigned int  reg )

inlinestatic

Definition at line 91 of file apic.h.

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apic_write()

static void apic_write ( unsigned int  reg, uint32_t  val  )

inlinestatic

Definition at line 99 of file apic.h.

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apic_icr_write()

static void apic_icr_write ( uint64_t  val )

inlinestatic

Definition at line 107 of file apic.h.

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Variable Documentation

cur_apic_mode

enum apic_mode cur_apic_mode

Definition at line 13 of file apic.c.