Release 4.14 arch/x86/include/asm/hw_irq.h

/* SPDX-License-Identifier: GPL-2.0 */
#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 <linux/atomic.h>
#include <asm/irq.h>
#include <asm/sections.h>

/* Interrupt handlers registered during init_IRQ */
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 kvm_posted_intr_wakeup_ipi(void);
extern asmlinkage void kvm_posted_intr_nested_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 irq_move_cleanup_interrupt(void);
extern asmlinkage void reboot_interrupt(void);
extern asmlinkage void threshold_interrupt(void);
extern asmlinkage void deferred_error_interrupt(void);

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

#ifdef	CONFIG_X86_LOCAL_APIC
struct irq_data;
struct pci_dev;
struct msi_desc;


enum irq_alloc_type {
	
X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
	
X86_IRQ_ALLOC_TYPE_HPET,
	
X86_IRQ_ALLOC_TYPE_MSI,
	
X86_IRQ_ALLOC_TYPE_MSIX,
	
X86_IRQ_ALLOC_TYPE_DMAR,
	
X86_IRQ_ALLOC_TYPE_UV,
};


struct irq_alloc_info {
	
enum irq_alloc_type	type;
	
u32			flags;
	
const struct cpumask	*mask;	/* CPU mask for vector allocation */
	union {
		
int		unused;
#ifdef	CONFIG_HPET_TIMER
		struct {
			
int		hpet_id;
			
int		hpet_index;
			
void		*hpet_data;
		};
#endif
#ifdef	CONFIG_PCI_MSI
		struct {
			
struct pci_dev	*msi_dev;
			
irq_hw_number_t	msi_hwirq;
		};
#endif
#ifdef	CONFIG_X86_IO_APIC
		struct {
			
int		ioapic_id;
			
int		ioapic_pin;
			
int		ioapic_node;
			
u32		ioapic_trigger : 1;
			
u32		ioapic_polarity : 1;
			
u32		ioapic_valid : 1;
			
struct IO_APIC_route_entry *ioapic_entry;
		};
#endif
#ifdef	CONFIG_DMAR_TABLE
		struct {
			
int		dmar_id;
			
void		*dmar_data;
		};
#endif
#ifdef	CONFIG_HT_IRQ
		struct {
			
int		ht_pos;
			
int		ht_idx;
			
struct pci_dev	*ht_dev;
			
void		*ht_update;
		};
#endif
#ifdef	CONFIG_X86_UV
		struct {
			
int		uv_limit;
			
int		uv_blade;
			
unsigned long	uv_offset;
			
char		*uv_name;
		};
#endif
#if IS_ENABLED(CONFIG_VMD)
		struct {
			
struct msi_desc *desc;
		};
#endif
	};
};


struct irq_cfg {
	
unsigned int		dest_apicid;
	
u8			vector;
	
u8			old_vector;
};

extern struct irq_cfg *irq_cfg(unsigned int irq);
extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
extern void lock_vector_lock(void);
extern void unlock_vector_lock(void);
extern void setup_vector_irq(int cpu);
#ifdef CONFIG_SMP
extern void send_cleanup_vector(struct irq_cfg *);
extern void irq_complete_move(struct irq_cfg *cfg);
#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

extern void apic_ack_edge(struct irq_data *data);
#else	/*  CONFIG_X86_LOCAL_APIC */


static inline void lock_vector_lock(void) {}
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static inline void unlock_vector_lock(void) {}
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#endif	/* CONFIG_X86_LOCAL_APIC */

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

extern void elcr_set_level_irq(unsigned int irq);

extern char irq_entries_start[];
#ifdef CONFIG_TRACING

#define trace_irq_entries_start irq_entries_start
#endif


#define VECTOR_UNUSED		NULL

#define VECTOR_RETRIGGERED	((void *)~0UL)


typedef struct irq_desc* vector_irq_t[NR_VECTORS];
DECLARE_PER_CPU(vector_irq_t, vector_irq);

#endif /* !ASSEMBLY_ */

#endif /* _ASM_X86_HW_IRQ_H */
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Directory: arch/x86/include/asm

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