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/* 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>
#define IRQ_MATRIX_BITS NR_VECTORS
#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>
#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);
extern void lock_vector_lock(void);
extern void unlock_vector_lock(void);
#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);
#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
static inline void lock_vector_lock(void) {}
static inline void unlock_vector_lock(void) {}
#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
/* 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 /* !ASSEMBLY_ */
#endif /* _ASM_X86_HW_IRQ_H */