hw_irq.h 6.5 KB
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H. Peter Anvin 已提交
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#ifndef _ASM_X86_HW_IRQ_H
#define _ASM_X86_HW_IRQ_H
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/*
 * (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
 */

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#include <asm/irq_vectors.h>
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#ifndef __ASSEMBLY__

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

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

/* Interrupt handlers registered during init_IRQ */
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extern asmlinkage void apic_timer_interrupt(void);
extern asmlinkage void x86_platform_ipi(void);
extern asmlinkage void kvm_posted_intr_ipi(void);
extern asmlinkage void error_interrupt(void);
extern asmlinkage void irq_work_interrupt(void);

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

extern asmlinkage void invalidate_interrupt(void);
extern asmlinkage void invalidate_interrupt0(void);
extern asmlinkage void invalidate_interrupt1(void);
extern asmlinkage void invalidate_interrupt2(void);
extern asmlinkage void invalidate_interrupt3(void);
extern asmlinkage void invalidate_interrupt4(void);
extern asmlinkage void invalidate_interrupt5(void);
extern asmlinkage void invalidate_interrupt6(void);
extern asmlinkage void invalidate_interrupt7(void);
extern asmlinkage void invalidate_interrupt8(void);
extern asmlinkage void invalidate_interrupt9(void);
extern asmlinkage void invalidate_interrupt10(void);
extern asmlinkage void invalidate_interrupt11(void);
extern asmlinkage void invalidate_interrupt12(void);
extern asmlinkage void invalidate_interrupt13(void);
extern asmlinkage void invalidate_interrupt14(void);
extern asmlinkage void invalidate_interrupt15(void);
extern asmlinkage void invalidate_interrupt16(void);
extern asmlinkage void invalidate_interrupt17(void);
extern asmlinkage void invalidate_interrupt18(void);
extern asmlinkage void invalidate_interrupt19(void);
extern asmlinkage void invalidate_interrupt20(void);
extern asmlinkage void invalidate_interrupt21(void);
extern asmlinkage void invalidate_interrupt22(void);
extern asmlinkage void invalidate_interrupt23(void);
extern asmlinkage void invalidate_interrupt24(void);
extern asmlinkage void invalidate_interrupt25(void);
extern asmlinkage void invalidate_interrupt26(void);
extern asmlinkage void invalidate_interrupt27(void);
extern asmlinkage void invalidate_interrupt28(void);
extern asmlinkage void invalidate_interrupt29(void);
extern asmlinkage void invalidate_interrupt30(void);
extern asmlinkage void invalidate_interrupt31(void);

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

extern asmlinkage void call_function_interrupt(void);
extern asmlinkage void call_function_single_interrupt(void);
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#ifdef CONFIG_TRACING
/* Interrupt handlers registered during init_IRQ */
extern void trace_apic_timer_interrupt(void);
extern void trace_x86_platform_ipi(void);
extern void trace_error_interrupt(void);
extern void trace_irq_work_interrupt(void);
extern void trace_spurious_interrupt(void);
extern void trace_thermal_interrupt(void);
extern void trace_reschedule_interrupt(void);
extern void trace_threshold_interrupt(void);
extern void trace_call_function_interrupt(void);
extern void trace_call_function_single_interrupt(void);
#define trace_irq_move_cleanup_interrupt  irq_move_cleanup_interrupt
#define trace_reboot_interrupt  reboot_interrupt
#define trace_kvm_posted_intr_ipi kvm_posted_intr_ipi
#endif /* CONFIG_TRACING */

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#ifdef CONFIG_IRQ_REMAP
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/* Intel specific interrupt remapping information */
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struct irq_2_iommu {
	struct intel_iommu *iommu;
	u16 irte_index;
	u16 sub_handle;
	u8  irte_mask;
};

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/* AMD specific interrupt remapping information */
struct irq_2_irte {
	u16 devid; /* Device ID for IRTE table */
	u16 index; /* Index into IRTE table*/
};
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#endif	/* CONFIG_IRQ_REMAP */
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#ifdef	CONFIG_X86_LOCAL_APIC
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struct irq_data;

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struct irq_cfg {
	cpumask_var_t		domain;
	cpumask_var_t		old_domain;
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	unsigned int		dest_apicid;
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	u8			vector;
	u8			move_in_progress : 1;
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#ifdef CONFIG_IRQ_REMAP
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	u8			remapped : 1;
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	union {
		struct irq_2_iommu irq_2_iommu;
		struct irq_2_irte  irq_2_irte;
	};
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#endif
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	union {
#ifdef CONFIG_X86_IO_APIC
		struct {
			struct list_head	irq_2_pin;
		};
#endif
	};
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};

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extern struct irq_cfg *irq_cfg(unsigned int irq);
extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
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extern struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node);
extern void lock_vector_lock(void);
extern void unlock_vector_lock(void);
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extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
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extern void clear_irq_vector(int irq, struct irq_cfg *cfg);
extern void setup_vector_irq(int cpu);
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#ifdef CONFIG_SMP
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extern void send_cleanup_vector(struct irq_cfg *);
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extern void irq_complete_move(struct irq_cfg *cfg);
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#else
static inline void send_cleanup_vector(struct irq_cfg *c) { }
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static inline void irq_complete_move(struct irq_cfg *c) { }
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#endif
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extern int apic_retrigger_irq(struct irq_data *data);
extern void apic_ack_edge(struct irq_data *data);
extern int apic_set_affinity(struct irq_data *data, const struct cpumask *mask,
			     unsigned int *dest_id);
#else	/*  CONFIG_X86_LOCAL_APIC */
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static inline void lock_vector_lock(void) {}
static inline void unlock_vector_lock(void) {}
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#endif	/* CONFIG_X86_LOCAL_APIC */
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/* Statistics */
extern atomic_t irq_err_count;
extern atomic_t irq_mis_count;

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

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/* SMP */
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extern __visible void smp_apic_timer_interrupt(struct pt_regs *);
extern __visible void smp_spurious_interrupt(struct pt_regs *);
extern __visible void smp_x86_platform_ipi(struct pt_regs *);
extern __visible void smp_error_interrupt(struct pt_regs *);
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#ifdef CONFIG_X86_IO_APIC
extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
#endif
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#ifdef CONFIG_SMP
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extern __visible void smp_reschedule_interrupt(struct pt_regs *);
extern __visible void smp_call_function_interrupt(struct pt_regs *);
extern __visible void smp_call_function_single_interrupt(struct pt_regs *);
extern __visible void smp_invalidate_interrupt(struct pt_regs *);
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#endif
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extern char irq_entries_start[];
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#ifdef CONFIG_TRACING
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#define trace_irq_entries_start irq_entries_start
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#endif
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#define VECTOR_UNDEFINED	(-1)
#define VECTOR_RETRIGGERED	(-2)
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typedef int vector_irq_t[NR_VECTORS];
DECLARE_PER_CPU(vector_irq_t, vector_irq);
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#endif /* !ASSEMBLY_ */

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#endif /* _ASM_X86_HW_IRQ_H */