io-apic.h File Reference

x86 IO-APIC register definitions and utility functions. More...

#include <xtf/numbers.h>
#include <xtf/types.h>

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Macros
#define	IOAPIC_REGSEL   0x00
#define	IOAPIC_IOWIN   0x10
#define	IOAPIC_ID   0x0
#define	IOAPIC_VERSION   0x1
#define	IOAPIC_MAXREDIR_MASK   0xff0000
#define	IOAPIC_REDIR_ENTRY(e)   (0x10 + (e) * 2)
#define	IOAPIC_REDIR_MASK_SHIFT   16
#define	IOAPIC_DEFAULT_BASE   0xfec00000

Functions
int	ioapic_init (void)
	Discover and initialise the IO-APIC. More...
static uint32_t	ioapic_read32 (unsigned int reg)
static uint64_t	ioapic_read64 (unsigned int reg)
static void	ioapic_write32 (unsigned int reg, uint32_t val)
static void	ioapic_write64 (unsigned int reg, uint64_t val)
int	ioapic_set_mask (unsigned int entry, bool mask)
	Set the mask bit on a redirection entry. More...

Detailed Description

x86 IO-APIC register definitions and utility functions.

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

Definition in file io-apic.h.

Macro Definition Documentation

IOAPIC_REGSEL

#define IOAPIC_REGSEL   0x00

Definition at line 17 of file io-apic.h.

IOAPIC_IOWIN

#define IOAPIC_IOWIN   0x10

Definition at line 18 of file io-apic.h.

IOAPIC_ID

#define IOAPIC_ID   0x0

Definition at line 21 of file io-apic.h.

IOAPIC_VERSION

#define IOAPIC_VERSION   0x1

Definition at line 23 of file io-apic.h.

IOAPIC_MAXREDIR_MASK

#define IOAPIC_MAXREDIR_MASK   0xff0000

Definition at line 24 of file io-apic.h.

IOAPIC_REDIR_ENTRY

#define IOAPIC_REDIR_ENTRY

(

e

)

(0x10 + (e) * 2)

Definition at line 26 of file io-apic.h.

IOAPIC_REDIR_MASK_SHIFT

#define IOAPIC_REDIR_MASK_SHIFT   16

Definition at line 27 of file io-apic.h.

IOAPIC_DEFAULT_BASE

#define IOAPIC_DEFAULT_BASE   0xfec00000

Definition at line 29 of file io-apic.h.

Function Documentation

ioapic_init()

int ioapic_init

(

void

)

Discover and initialise the IO-APIC.

May fail if there is no IO-APIC.

Definition at line 15 of file io-apic.c.

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ioapic_read32()

static uint32_t ioapic_read32 ( unsigned int  reg )

inlinestatic

Definition at line 36 of file io-apic.h.

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ioapic_read64()

static uint64_t ioapic_read64 ( unsigned int  reg )

inlinestatic

Definition at line 43 of file io-apic.h.

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ioapic_write32()

static void ioapic_write32 ( unsigned int  reg, uint32_t  val  )

inlinestatic

Definition at line 48 of file io-apic.h.

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ioapic_write64()

static void ioapic_write64 ( unsigned int  reg, uint64_t  val  )

inlinestatic

Definition at line 54 of file io-apic.h.

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ioapic_set_mask()

int ioapic_set_mask	(	unsigned int	entry,
		bool	mask
	)

Set the mask bit on a redirection entry.

Definition at line 29 of file io-apic.c.

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