[deliverable/linux.git] / include / asm-x86 / hw_irq_64.h

#ifndef _ASM_HW_IRQ_H
#define _ASM_HW_IRQ_H

/*
 *	linux/include/asm/hw_irq.h
 *
 *	(C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
 *
 *	moved some of the old arch/i386/kernel/irq.h to here. VY
 *
 *	IRQ/IPI changes taken from work by Thomas Radke
 *	<tomsoft@informatik.tu-chemnitz.de>
 *
 *	hacked by Andi Kleen for x86-64.
 */

#ifndef __ASSEMBLY__
#include <asm/atomic.h>
#include <asm/irq.h>
#include <linux/profile.h>
#include <linux/smp.h>
#include <linux/percpu.h>
#endif

#define NMI_VECTOR		0x02
/*
 * IDT vectors usable for external interrupt sources start
 * at 0x20:
 */
#define FIRST_EXTERNAL_VECTOR	0x20

#define IA32_SYSCALL_VECTOR	0x80


/* Reserve the lowest usable priority level 0x20 - 0x2f for triggering
 * cleanup after irq migration.
 */
#define IRQ_MOVE_CLEANUP_VECTOR	FIRST_EXTERNAL_VECTOR
 
/*
 * Vectors 0x30-0x3f are used for ISA interrupts.
 */
#define IRQ0_VECTOR		(FIRST_EXTERNAL_VECTOR + 0x10)
#define IRQ1_VECTOR		(IRQ0_VECTOR + 1)
#define IRQ2_VECTOR		(IRQ0_VECTOR + 2)
#define IRQ3_VECTOR		(IRQ0_VECTOR + 3)
#define IRQ4_VECTOR		(IRQ0_VECTOR + 4)
#define IRQ5_VECTOR		(IRQ0_VECTOR + 5)
#define IRQ6_VECTOR		(IRQ0_VECTOR + 6)
#define IRQ7_VECTOR		(IRQ0_VECTOR + 7)
#define IRQ8_VECTOR		(IRQ0_VECTOR + 8)
#define IRQ9_VECTOR		(IRQ0_VECTOR + 9)
#define IRQ10_VECTOR		(IRQ0_VECTOR + 10)
#define IRQ11_VECTOR		(IRQ0_VECTOR + 11)
#define IRQ12_VECTOR		(IRQ0_VECTOR + 12)
#define IRQ13_VECTOR		(IRQ0_VECTOR + 13)
#define IRQ14_VECTOR		(IRQ0_VECTOR + 14)
#define IRQ15_VECTOR		(IRQ0_VECTOR + 15)

/*
 * Special IRQ vectors used by the SMP architecture, 0xf0-0xff
 *
 *  some of the following vectors are 'rare', they are merged
 *  into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
 *  TLB, reschedule and local APIC vectors are performance-critical.
 */
#define SPURIOUS_APIC_VECTOR	0xff
#define ERROR_APIC_VECTOR	0xfe
#define RESCHEDULE_VECTOR	0xfd
#define CALL_FUNCTION_VECTOR	0xfc
/* fb free - please don't readd KDB here because it's useless
   (hint - think what a NMI bit does to a vector) */
#define THERMAL_APIC_VECTOR	0xfa
#define THRESHOLD_APIC_VECTOR   0xf9
/* f8 free */
#define INVALIDATE_TLB_VECTOR_END	0xf7
#define INVALIDATE_TLB_VECTOR_START	0xf0	/* f0-f7 used for TLB flush */

#define NUM_INVALIDATE_TLB_VECTORS	8

/*
 * Local APIC timer IRQ vector is on a different priority level,
 * to work around the 'lost local interrupt if more than 2 IRQ
 * sources per level' errata.
 */
#define LOCAL_TIMER_VECTOR	0xef

/*
 * First APIC vector available to drivers: (vectors 0x30-0xee)
 * we start at 0x41 to spread out vectors evenly between priority
 * levels. (0x80 is the syscall vector)
 */
#define FIRST_DEVICE_VECTOR	(IRQ15_VECTOR + 2)
#define FIRST_SYSTEM_VECTOR	0xef   /* duplicated in irq.h */


#ifndef __ASSEMBLY__

/* Interrupt handlers registered during init_IRQ */
void apic_timer_interrupt(void);
void spurious_interrupt(void);
void error_interrupt(void);
void reschedule_interrupt(void);
void call_function_interrupt(void);
void irq_move_cleanup_interrupt(void);
void invalidate_interrupt0(void);
void invalidate_interrupt1(void);
void invalidate_interrupt2(void);
void invalidate_interrupt3(void);
void invalidate_interrupt4(void);
void invalidate_interrupt5(void);
void invalidate_interrupt6(void);
void invalidate_interrupt7(void);
void thermal_interrupt(void);
void threshold_interrupt(void);
void i8254_timer_resume(void);

typedef int vector_irq_t[NR_VECTORS];
DECLARE_PER_CPU(vector_irq_t, vector_irq);
extern void __setup_vector_irq(int cpu);
extern spinlock_t vector_lock;

/*
 * Various low-level irq details needed by irq.c, process.c,
 * time.c, io_apic.c and smp.c
 *
 * Interrupt entry/exit code at both C and assembly level
 */

extern void disable_8259A_irq(unsigned int irq);
extern void enable_8259A_irq(unsigned int irq);
extern int i8259A_irq_pending(unsigned int irq);
extern void make_8259A_irq(unsigned int irq);
extern void init_8259A(int aeoi);
extern void send_IPI_self(int vector);
extern void init_VISWS_APIC_irqs(void);
extern void setup_IO_APIC(void);
extern void enable_IO_APIC(void);
extern void disable_IO_APIC(void);
extern void print_IO_APIC(void);
extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
extern void send_IPI(int dest, int vector);
extern void setup_ioapic_dest(void);
extern void native_init_IRQ(void);

extern unsigned long io_apic_irqs;

extern atomic_t irq_err_count;
extern atomic_t irq_mis_count;

#define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))

#include <asm/ptrace.h>

#define IRQ_NAME2(nr) nr##_interrupt(void)
#define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr)

/*
 *	SMP has a few special interrupts for IPI messages
 */

#define BUILD_IRQ(nr) \
asmlinkage void IRQ_NAME(nr); \
__asm__( \
"\n.p2align\n" \
"IRQ" #nr "_interrupt:\n\t" \
	"push $~(" #nr ") ; " \
	"jmp common_interrupt");

#define platform_legacy_irq(irq)	((irq) < 16)

#endif

#endif /* _ASM_HW_IRQ_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _ASM_HW_IRQ_H
	2	#define _ASM_HW_IRQ_H
	3
	4	/*
	5	* linux/include/asm/hw_irq.h
	6	*
	7	* (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
	8	*
	9	* moved some of the old arch/i386/kernel/irq.h to here. VY
	10	*
	11	* IRQ/IPI changes taken from work by Thomas Radke
	12	* <tomsoft@informatik.tu-chemnitz.de>
	13	*
	14	* hacked by Andi Kleen for x86-64.
1da177e4 LT	15	*/
	16
	17	#ifndef __ASSEMBLY__
1da177e4 LT	18	#include <asm/atomic.h>
	19	#include <asm/irq.h>
	20	#include <linux/profile.h>
	21	#include <linux/smp.h>
550f2299	22	#include <linux/percpu.h>
1da177e4 LT	23	#endif
1da177e4 LT	24
1a426cb7	25	#define NMI_VECTOR 0x02
1da177e4 LT	26	/*
	27	* IDT vectors usable for external interrupt sources start
	28	* at 0x20:
	29	*/
	30	#define FIRST_EXTERNAL_VECTOR 0x20
	31
	32	#define IA32_SYSCALL_VECTOR 0x80
	33
	34
61014292 EB	35	/* Reserve the lowest usable priority level 0x20 - 0x2f for triggering
	36	* cleanup after irq migration.
	37	*/
	38	#define IRQ_MOVE_CLEANUP_VECTOR FIRST_EXTERNAL_VECTOR
	39
1da177e4	40	/*
c97beb47	41	* Vectors 0x30-0x3f are used for ISA interrupts.
1da177e4	42	*/
3f4ed151 SR	43	#define IRQ0_VECTOR (FIRST_EXTERNAL_VECTOR + 0x10)
	44	#define IRQ1_VECTOR (IRQ0_VECTOR + 1)
	45	#define IRQ2_VECTOR (IRQ0_VECTOR + 2)
	46	#define IRQ3_VECTOR (IRQ0_VECTOR + 3)
	47	#define IRQ4_VECTOR (IRQ0_VECTOR + 4)
	48	#define IRQ5_VECTOR (IRQ0_VECTOR + 5)
	49	#define IRQ6_VECTOR (IRQ0_VECTOR + 6)
	50	#define IRQ7_VECTOR (IRQ0_VECTOR + 7)
	51	#define IRQ8_VECTOR (IRQ0_VECTOR + 8)
	52	#define IRQ9_VECTOR (IRQ0_VECTOR + 9)
	53	#define IRQ10_VECTOR (IRQ0_VECTOR + 10)
	54	#define IRQ11_VECTOR (IRQ0_VECTOR + 11)
	55	#define IRQ12_VECTOR (IRQ0_VECTOR + 12)
	56	#define IRQ13_VECTOR (IRQ0_VECTOR + 13)
	57	#define IRQ14_VECTOR (IRQ0_VECTOR + 14)
	58	#define IRQ15_VECTOR (IRQ0_VECTOR + 15)
1da177e4 LT	59
	60	/*
	61	* Special IRQ vectors used by the SMP architecture, 0xf0-0xff
	62	*
	63	* some of the following vectors are 'rare', they are merged
	64	* into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
	65	* TLB, reschedule and local APIC vectors are performance-critical.
1da177e4 LT	66	*/
	67	#define SPURIOUS_APIC_VECTOR 0xff
	68	#define ERROR_APIC_VECTOR 0xfe
e5bc8b6b AK	69	#define RESCHEDULE_VECTOR 0xfd
e5bc8b6b AK	70	#define CALL_FUNCTION_VECTOR 0xfc
915f34e2 AK	71	/* fb free - please don't readd KDB here because it's useless
915f34e2 AK	72	(hint - think what a NMI bit does to a vector) */
e5bc8b6b	73	#define THERMAL_APIC_VECTOR 0xfa
89b831ef	74	#define THRESHOLD_APIC_VECTOR 0xf9
e080e9d6 JU	75	/* f8 free */
	76	#define INVALIDATE_TLB_VECTOR_END 0xf7
	77	#define INVALIDATE_TLB_VECTOR_START 0xf0 /* f0-f7 used for TLB flush */
1da177e4	78
e5bc8b6b	79	#define NUM_INVALIDATE_TLB_VECTORS 8
1da177e4 LT	80
	81	/*
	82	* Local APIC timer IRQ vector is on a different priority level,
	83	* to work around the 'lost local interrupt if more than 2 IRQ
	84	* sources per level' errata.
	85	*/
	86	#define LOCAL_TIMER_VECTOR 0xef
	87
	88	/*
	89	* First APIC vector available to drivers: (vectors 0x30-0xee)
61014292	90	* we start at 0x41 to spread out vectors evenly between priority
1da177e4 LT	91	* levels. (0x80 is the syscall vector)
1da177e4 LT	92	*/
bc5e81a1	93	#define FIRST_DEVICE_VECTOR (IRQ15_VECTOR + 2)
1da177e4 LT	94	#define FIRST_SYSTEM_VECTOR 0xef /* duplicated in irq.h */
	95
	96
	97	#ifndef __ASSEMBLY__
99253b8e GOC	98
	99	/* Interrupt handlers registered during init_IRQ */
	100	void apic_timer_interrupt(void);
	101	void spurious_interrupt(void);
	102	void error_interrupt(void);
	103	void reschedule_interrupt(void);
	104	void call_function_interrupt(void);
	105	void irq_move_cleanup_interrupt(void);
	106	void invalidate_interrupt0(void);
	107	void invalidate_interrupt1(void);
	108	void invalidate_interrupt2(void);
	109	void invalidate_interrupt3(void);
	110	void invalidate_interrupt4(void);
	111	void invalidate_interrupt5(void);
	112	void invalidate_interrupt6(void);
	113	void invalidate_interrupt7(void);
	114	void thermal_interrupt(void);
	115	void threshold_interrupt(void);
	116	void i8254_timer_resume(void);
	117
550f2299 EB	118	typedef int vector_irq_t[NR_VECTORS];
550f2299 EB	119	DECLARE_PER_CPU(vector_irq_t, vector_irq);
70a0a535 EB	120	extern void __setup_vector_irq(int cpu);
70a0a535 EB	121	extern spinlock_t vector_lock;
1da177e4 LT	122
	123	/*
	124	* Various low-level irq details needed by irq.c, process.c,
	125	* time.c, io_apic.c and smp.c
	126	*
	127	* Interrupt entry/exit code at both C and assembly level
	128	*/
	129
	130	extern void disable_8259A_irq(unsigned int irq);
	131	extern void enable_8259A_irq(unsigned int irq);
	132	extern int i8259A_irq_pending(unsigned int irq);
	133	extern void make_8259A_irq(unsigned int irq);
	134	extern void init_8259A(int aeoi);
c49c5330	135	extern void send_IPI_self(int vector);
1da177e4 LT	136	extern void init_VISWS_APIC_irqs(void);
1da177e4 LT	137	extern void setup_IO_APIC(void);
1c69524c	138	extern void enable_IO_APIC(void);
1da177e4 LT	139	extern void disable_IO_APIC(void);
	140	extern void print_IO_APIC(void);
	141	extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
	142	extern void send_IPI(int dest, int vector);
	143	extern void setup_ioapic_dest(void);
b0387830	144	extern void native_init_IRQ(void);
1da177e4 LT	145
	146	extern unsigned long io_apic_irqs;
	147
	148	extern atomic_t irq_err_count;
	149	extern atomic_t irq_mis_count;
	150
	151	#define IO_APIC_IRQ(x) (((x) >= 16) \|\| ((1<<(x)) & io_apic_irqs))
	152
1da177e4 LT	153	#include <asm/ptrace.h>
	154
	155	#define IRQ_NAME2(nr) nr##_interrupt(void)
	156	#define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr)
	157
	158	/*
	159	* SMP has a few special interrupts for IPI messages
	160	*/
	161
	162	#define BUILD_IRQ(nr) \
	163	asmlinkage void IRQ_NAME(nr); \
	164	__asm__( \
	165	"\n.p2align\n" \
	166	"IRQ" #nr "_interrupt:\n\t" \
19eadf98	167	"push $~(" #nr ") ; " \
1da177e4 LT	168	"jmp common_interrupt");
1da177e4 LT	169
1da177e4 LT	170	#define platform_legacy_irq(irq) ((irq) < 16)
	171
	172	#endif
	173
	174	#endif /* _ASM_HW_IRQ_H */