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#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 x86_platform_ipi(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_x86_platform_ipi(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 */
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