[net-next-2.6.git] / arch / x86 / include / asm / hw_irq.h

#ifndef _ASM_X86_HW_IRQ_H
#define _ASM_X86_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.
 * unified by tglx
 */

#include <asm/irq_vectors.h>

#ifndef __ASSEMBLY__

#include <linux/percpu.h>
#include <linux/profile.h>
#include <linux/smp.h>

#include <asm/atomic.h>
#include <asm/irq.h>
#include <asm/sections.h>

/* Interrupt handlers registered during init_IRQ */
extern void apic_timer_interrupt(void);
extern void generic_interrupt(void);
extern void error_interrupt(void);
extern void perf_pending_interrupt(void);

extern void spurious_interrupt(void);
extern void thermal_interrupt(void);
extern void reschedule_interrupt(void);
extern void mce_self_interrupt(void);

extern void invalidate_interrupt(void);
extern void invalidate_interrupt0(void);
extern void invalidate_interrupt1(void);
extern void invalidate_interrupt2(void);
extern void invalidate_interrupt3(void);
extern void invalidate_interrupt4(void);
extern void invalidate_interrupt5(void);
extern void invalidate_interrupt6(void);
extern void invalidate_interrupt7(void);

extern void irq_move_cleanup_interrupt(void);
extern void reboot_interrupt(void);
extern void threshold_interrupt(void);

extern void call_function_interrupt(void);
extern void call_function_single_interrupt(void);

/* PIC specific functions */
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);

/* IOAPIC */
#define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs))
extern unsigned long io_apic_irqs;

extern void init_VISWS_APIC_irqs(void);
extern void setup_IO_APIC(void);
extern void disable_IO_APIC(void);

struct io_apic_irq_attr {
	int ioapic;
	int ioapic_pin;
	int trigger;
	int polarity;
};

static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
					int ioapic, int ioapic_pin,
					int trigger, int polarity)
{
	irq_attr->ioapic	= ioapic;
	irq_attr->ioapic_pin	= ioapic_pin;
	irq_attr->trigger	= trigger;
	irq_attr->polarity	= polarity;
}

/*
 * This is performance-critical, we want to do it O(1)
 *
 * Most irqs are mapped 1:1 with pins.
 */
struct irq_cfg {
	struct irq_pin_list	*irq_2_pin;
	cpumask_var_t		domain;
	cpumask_var_t		old_domain;
	u8			vector;
	u8			move_in_progress : 1;
};

extern struct irq_cfg *irq_cfg(unsigned int);
extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
extern void send_cleanup_vector(struct irq_cfg *);

struct irq_desc;
extern unsigned int set_desc_affinity(struct irq_desc *, const struct cpumask *);
extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr);
extern void setup_ioapic_dest(void);

extern void enable_IO_APIC(void);

/* Statistics */
extern atomic_t irq_err_count;
extern atomic_t irq_mis_count;

/* EISA */
extern void eisa_set_level_irq(unsigned int irq);

/* SMP */
extern void smp_apic_timer_interrupt(struct pt_regs *);
extern void smp_spurious_interrupt(struct pt_regs *);
extern void smp_generic_interrupt(struct pt_regs *);
extern void smp_error_interrupt(struct pt_regs *);
#ifdef CONFIG_X86_IO_APIC
extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
#endif
#ifdef CONFIG_SMP
extern void smp_reschedule_interrupt(struct pt_regs *);
extern void smp_call_function_interrupt(struct pt_regs *);
extern void smp_call_function_single_interrupt(struct pt_regs *);
#ifdef CONFIG_X86_32
extern void smp_invalidate_interrupt(struct pt_regs *);
#else
extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
#endif
#endif

extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);

typedef int vector_irq_t[NR_VECTORS];
DECLARE_PER_CPU(vector_irq_t, vector_irq);

#ifdef CONFIG_X86_IO_APIC
extern void lock_vector_lock(void);
extern void unlock_vector_lock(void);
extern void __setup_vector_irq(int cpu);
#else
static inline void lock_vector_lock(void) {}
static inline void unlock_vector_lock(void) {}
static inline void __setup_vector_irq(int cpu) {}
#endif

#endif /* !ASSEMBLY_ */

#endif /* _ASM_X86_HW_IRQ_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_HW_IRQ_H
1965aae3 PA	2	#define _ASM_X86_HW_IRQ_H
2e088436 TG	3
	4	/*
	5	* (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
	6	*
	7	* moved some of the old arch/i386/kernel/irq.h to here. VY
	8	*
	9	* IRQ/IPI changes taken from work by Thomas Radke
	10	* <tomsoft@informatik.tu-chemnitz.de>
	11	*
	12	* hacked by Andi Kleen for x86-64.
	13	* unified by tglx
	14	*/
	15
9b7dc567	16	#include <asm/irq_vectors.h>
2e088436 TG	17
	18	#ifndef __ASSEMBLY__
	19
	20	#include <linux/percpu.h>
	21	#include <linux/profile.h>
	22	#include <linux/smp.h>
	23
	24	#include <asm/atomic.h>
	25	#include <asm/irq.h>
	26	#include <asm/sections.h>
	27
2e088436 TG	28	/* Interrupt handlers registered during init_IRQ */
2e088436 TG	29	extern void apic_timer_interrupt(void);
acaabe79	30	extern void generic_interrupt(void);
2e088436	31	extern void error_interrupt(void);
b6276f35	32	extern void perf_pending_interrupt(void);
241771ef	33
2e088436 TG	34	extern void spurious_interrupt(void);
	35	extern void thermal_interrupt(void);
	36	extern void reschedule_interrupt(void);
ccc3c319	37	extern void mce_self_interrupt(void);
2e088436 TG	38
	39	extern void invalidate_interrupt(void);
	40	extern void invalidate_interrupt0(void);
	41	extern void invalidate_interrupt1(void);
	42	extern void invalidate_interrupt2(void);
	43	extern void invalidate_interrupt3(void);
	44	extern void invalidate_interrupt4(void);
	45	extern void invalidate_interrupt5(void);
	46	extern void invalidate_interrupt6(void);
	47	extern void invalidate_interrupt7(void);
	48
	49	extern void irq_move_cleanup_interrupt(void);
4ef702c1	50	extern void reboot_interrupt(void);
2e088436 TG	51	extern void threshold_interrupt(void);
	52
	53	extern void call_function_interrupt(void);
1a781a77	54	extern void call_function_single_interrupt(void);
2e088436 TG	55
	56	/* PIC specific functions */
	57	extern void disable_8259A_irq(unsigned int irq);
	58	extern void enable_8259A_irq(unsigned int irq);
	59	extern int i8259A_irq_pending(unsigned int irq);
	60	extern void make_8259A_irq(unsigned int irq);
	61	extern void init_8259A(int aeoi);
	62
	63	/* IOAPIC */
abcaa2b8	64	#define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) \|\| ((1<<(x)) & io_apic_irqs))
2e088436 TG	65	extern unsigned long io_apic_irqs;
	66
	67	extern void init_VISWS_APIC_irqs(void);
	68	extern void setup_IO_APIC(void);
	69	extern void disable_IO_APIC(void);
e5198075 YL	70
	71	struct io_apic_irq_attr {
	72	int ioapic;
	73	int ioapic_pin;
	74	int trigger;
	75	int polarity;
	76	};
	77
	78	static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
	79	int ioapic, int ioapic_pin,
	80	int trigger, int polarity)
	81	{
9338ad6f DS	82	irq_attr->ioapic = ioapic;
	83	irq_attr->ioapic_pin = ioapic_pin;
	84	irq_attr->trigger = trigger;
	85	irq_attr->polarity = polarity;
e5198075 YL	86	}
e5198075 YL	87
9338ad6f DS	88	/*
	89	* This is performance-critical, we want to do it O(1)
	90	*
	91	* Most irqs are mapped 1:1 with pins.
	92	*/
	93	struct irq_cfg {
	94	struct irq_pin_list *irq_2_pin;
	95	cpumask_var_t domain;
	96	cpumask_var_t old_domain;
9338ad6f DS	97	u8 vector;
	98	u8 move_in_progress : 1;
	99	};
	100
	101	extern struct irq_cfg *irq_cfg(unsigned int);
	102	extern int assign_irq_vector(int, struct irq_cfg , const struct cpumask );
	103	extern void send_cleanup_vector(struct irq_cfg *);
7ec13187 IM	104
7ec13187 IM	105	struct irq_desc;
9338ad6f DS	106	extern unsigned int set_desc_affinity(struct irq_desc , const struct cpumask );
9338ad6f DS	107	extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr);
2e088436 TG	108	extern void setup_ioapic_dest(void);
2e088436 TG	109
97e7b6f5	110	extern void enable_IO_APIC(void);
97e7b6f5	111
2e088436 TG	112	/* Statistics */
	113	extern atomic_t irq_err_count;
	114	extern atomic_t irq_mis_count;
	115
1a331957 TG	116	/* EISA */
	117	extern void eisa_set_level_irq(unsigned int irq);
	118
2b97df06 JS	119	/* SMP */
2b97df06 JS	120	extern void smp_apic_timer_interrupt(struct pt_regs *);
2b97df06	121	extern void smp_spurious_interrupt(struct pt_regs *);
2c1b284e	122	extern void smp_generic_interrupt(struct pt_regs *);
2b97df06	123	extern void smp_error_interrupt(struct pt_regs *);
2c1b284e JSR	124	#ifdef CONFIG_X86_IO_APIC
	125	extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
	126	#endif
3e5095d1	127	#ifdef CONFIG_SMP
e7f08dfd JS	128	extern void smp_reschedule_interrupt(struct pt_regs *);
	129	extern void smp_call_function_interrupt(struct pt_regs *);
	130	extern void smp_call_function_single_interrupt(struct pt_regs *);
b2139aa0 JS	131	#ifdef CONFIG_X86_32
	132	extern void smp_invalidate_interrupt(struct pt_regs *);
	133	#else
	134	extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
	135	#endif
e7f08dfd	136	#endif
2b97df06	137
4687518c	138	extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
497c9a19	139
22dc12d1 TG	140	typedef int vector_irq_t[NR_VECTORS];
22dc12d1 TG	141	DECLARE_PER_CPU(vector_irq_t, vector_irq);
d388e5fd	142
497c9a19	143	#ifdef CONFIG_X86_IO_APIC
d388e5fd EB	144	extern void lock_vector_lock(void);
	145	extern void unlock_vector_lock(void);
	146	extern void __setup_vector_irq(int cpu);
	147	#else
	148	static inline void lock_vector_lock(void) {}
	149	static inline void unlock_vector_lock(void) {}
	150	static inline void __setup_vector_irq(int cpu) {}
	151	#endif
2e088436	152
22dc12d1 TG	153	#endif /* !ASSEMBLY_ */
22dc12d1 TG	154
1965aae3	155	#endif /* _ASM_X86_HW_IRQ_H */