arch/x86/include/asm/apicdef.h

Source file repositories/reference/linux-study-clean/arch/x86/include/asm/apicdef.h

File Facts

System
Linux kernel
Corpus path
arch/x86/include/asm/apicdef.h
Extension
.h
Size
5423 bytes
Lines
177
Domain
Architecture Layer
Bucket
arch/x86
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _ASM_X86_APICDEF_H
#define _ASM_X86_APICDEF_H

#include <linux/bits.h>

/*
 * Constants for various Intel APICs. (local APIC, IOAPIC, etc.)
 *
 * Alan Cox <Alan.Cox@linux.org>, 1995.
 * Ingo Molnar <mingo@redhat.com>, 1999, 2000
 */

#define IO_APIC_DEFAULT_PHYS_BASE	0xfec00000
#define	APIC_DEFAULT_PHYS_BASE		0xfee00000

/*
 * This is the IO-APIC register space as specified
 * by Intel docs:
 */
#define IO_APIC_SLOT_SIZE		1024

#define APIC_DELIVERY_MODE_FIXED	0
#define APIC_DELIVERY_MODE_LOWESTPRIO	1
#define APIC_DELIVERY_MODE_SMI		2
#define APIC_DELIVERY_MODE_NMI		4
#define APIC_DELIVERY_MODE_INIT		5
#define APIC_DELIVERY_MODE_EXTINT	7

#define	APIC_ID		0x20

#define	APIC_LVR	0x30
#define		APIC_LVR_MASK		0xFF00FF
#define		APIC_LVR_DIRECTED_EOI	(1 << 24)
#define		GET_APIC_VERSION(x)	((x) & 0xFFu)
#define		GET_APIC_MAXLVT(x)	(((x) >> 16) & 0xFFu)
#ifdef CONFIG_X86_32
#  define	APIC_INTEGRATED(x)	((x) & 0xF0u)
#else
#  define	APIC_INTEGRATED(x)	(1)
#endif
#define		APIC_XAPIC(x)		((x) >= 0x14)
#define		APIC_EXT_SPACE(x)	((x) & 0x80000000)
#define	APIC_TASKPRI	0x80
#define		APIC_TPRI_MASK		0xFFu
#define	APIC_ARBPRI	0x90
#define		APIC_ARBPRI_MASK	0xFFu
#define	APIC_PROCPRI	0xA0
#define	APIC_EOI	0xB0
#define		APIC_EOI_ACK		0x0 /* Docs say 0 for future compat. */
#define	APIC_RRR	0xC0
#define	APIC_LDR	0xD0
#define		APIC_LDR_MASK		(0xFFu << 24)
#define		GET_APIC_LOGICAL_ID(x)	(((x) >> 24) & 0xFFu)
#define		SET_APIC_LOGICAL_ID(x)	(((x) << 24))
#define		APIC_ALL_CPUS		0xFFu
#define	APIC_DFR	0xE0
#define		APIC_DFR_CLUSTER		0x0FFFFFFFul
#define		APIC_DFR_FLAT			0xFFFFFFFFul
#define	APIC_SPIV	0xF0
#define		APIC_SPIV_DIRECTED_EOI		(1 << 12)
#define		APIC_SPIV_FOCUS_DISABLED	(1 << 9)
#define		APIC_SPIV_APIC_ENABLED		(1 << 8)
#define	APIC_ISR	0x100
#define	APIC_ISR_NR     0x8     /* Number of 32 bit ISR registers. */
#define	APIC_TMR	0x180
#define	APIC_IRR	0x200
#define	APIC_ESR	0x280
#define		APIC_ESR_SEND_CS	0x00001
#define		APIC_ESR_RECV_CS	0x00002
#define		APIC_ESR_SEND_ACC	0x00004
#define		APIC_ESR_RECV_ACC	0x00008
#define		APIC_ESR_SENDILL	0x00020
#define		APIC_ESR_RECVILL	0x00040
#define		APIC_ESR_ILLREGA	0x00080
#define 	APIC_LVTCMCI	0x2f0
#define	APIC_ICR	0x300
#define		APIC_DEST_SELF		0x40000
#define		APIC_DEST_ALLINC	0x80000
#define		APIC_DEST_ALLBUT	0xC0000
#define		APIC_ICR_RR_MASK	0x30000
#define		APIC_ICR_RR_INVALID	0x00000
#define		APIC_ICR_RR_INPROG	0x10000
#define		APIC_ICR_RR_VALID	0x20000
#define		APIC_INT_LEVELTRIG	0x08000
#define		APIC_INT_ASSERT		0x04000
#define		APIC_ICR_BUSY		0x01000
#define		APIC_DEST_LOGICAL	0x00800
#define		APIC_DEST_PHYSICAL	0x00000
#define		APIC_DM_FIXED		0x00000
#define		APIC_DM_FIXED_MASK	0x00700

Annotation

Implementation Notes