/* 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 __ASSEMBLER__

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

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

#ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
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_PCI_MSI,
        X86_IRQ_ALLOC_TYPE_PCI_MSIX,
        X86_IRQ_ALLOC_TYPE_DMAR,
        X86_IRQ_ALLOC_TYPE_AMDVI,
        X86_IRQ_ALLOC_TYPE_UV,
};

struct ioapic_alloc_info {
        int             pin;
        int             node;
        u32             is_level        : 1;
        u32             active_low      : 1;
        u32             valid           : 1;
};

struct uv_alloc_info {
        int             limit;
        int             blade;
        unsigned long   offset;
        char            *name;

};

/**
 * irq_alloc_info - X86 specific interrupt allocation info
 * @type:       X86 specific allocation type
 * @flags:      Flags for allocation tweaks
 * @devid:      Device ID for allocations
 * @hwirq:      Associated hw interrupt number in the domain
 * @mask:       CPU mask for vector allocation
 * @desc:       Pointer to msi descriptor
 * @data:       Allocation specific data
 *
 * @ioapic:     IOAPIC specific allocation data
 * @uv:         UV specific allocation data
*/
struct irq_alloc_info {
        enum irq_alloc_type     type;
        u32                     flags;
        u32                     devid;
        irq_hw_number_t         hwirq;
        const struct cpumask    *mask;
        struct msi_desc         *desc;
        void                    *data;

        union {
                struct ioapic_alloc_info        ioapic;
                struct uv_alloc_info            uv;
        };
};

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

extern struct irq_cfg *irq_cfg(unsigned int irq);
extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
#ifdef CONFIG_SMP
extern void vector_schedule_cleanup(struct irq_cfg *);
extern void irq_complete_move(struct irq_cfg *cfg);
#else
static inline void vector_schedule_cleanup(struct irq_cfg *c) { }
static inline void irq_complete_move(struct irq_cfg *c) { }
#endif
extern void apic_ack_edge(struct irq_data *data);
#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */

#ifdef CONFIG_X86_LOCAL_APIC
extern void lock_vector_lock(void);
extern void unlock_vector_lock(void);
#else
static inline void lock_vector_lock(void) {}
static inline void unlock_vector_lock(void) {}
#endif

/* 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

extern char spurious_entries_start[];

#define VECTOR_UNUSED           NULL
#define VECTOR_SHUTDOWN         ((void *)-1L)
#define VECTOR_RETRIGGERED      ((void *)-2L)

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

#endif /* !__ASSEMBLER__ */

#endif /* _ASM_X86_HW_IRQ_H */