1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_X86_HW_IRQ_H 3#define _ASM_X86_HW_IRQ_H 4 5/* 6 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar 7 * 8 * moved some of the old arch/i386/kernel/irq.h to here. VY 9 * 10 * IRQ/IPI changes taken from work by Thomas Radke 11 * <tomsoft@informatik.tu-chemnitz.de> 12 * 13 * hacked by Andi Kleen for x86-64. 14 * unified by tglx 15 */ 16 17#include <asm/irq_vectors.h> 18 19#ifndef __ASSEMBLY__ 20 21#include <linux/percpu.h> 22#include <linux/profile.h> 23#include <linux/smp.h> 24 25#include <linux/atomic.h> 26#include <asm/irq.h> 27#include <asm/sections.h> 28 29#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 30struct irq_data; 31struct pci_dev; 32struct msi_desc; 33 34enum irq_alloc_type { 35 X86_IRQ_ALLOC_TYPE_IOAPIC = 1, 36 X86_IRQ_ALLOC_TYPE_HPET, 37 X86_IRQ_ALLOC_TYPE_PCI_MSI, 38 X86_IRQ_ALLOC_TYPE_PCI_MSIX, 39 X86_IRQ_ALLOC_TYPE_DMAR, 40 X86_IRQ_ALLOC_TYPE_AMDVI, 41 X86_IRQ_ALLOC_TYPE_UV, 42}; 43 44struct ioapic_alloc_info { 45 int pin; 46 int node; 47 u32 is_level : 1; 48 u32 active_low : 1; 49 u32 valid : 1; 50}; 51 52struct uv_alloc_info { 53 int limit; 54 int blade; 55 unsigned long offset; 56 char *name; 57 58}; 59 60/** 61 * irq_alloc_info - X86 specific interrupt allocation info 62 * @type: X86 specific allocation type 63 * @flags: Flags for allocation tweaks 64 * @devid: Device ID for allocations 65 * @hwirq: Associated hw interrupt number in the domain 66 * @mask: CPU mask for vector allocation 67 * @desc: Pointer to msi descriptor 68 * @data: Allocation specific data 69 * 70 * @ioapic: IOAPIC specific allocation data 71 * @uv: UV specific allocation data 72*/ 73struct irq_alloc_info { 74 enum irq_alloc_type type; 75 u32 flags; 76 u32 devid; 77 irq_hw_number_t hwirq; 78 const struct cpumask *mask; 79 struct msi_desc *desc; 80 void *data; 81 82 union { 83 struct ioapic_alloc_info ioapic; 84 struct uv_alloc_info uv; 85 }; 86}; 87 88struct irq_cfg { 89 unsigned int dest_apicid; 90 unsigned int vector; 91}; 92 93extern struct irq_cfg *irq_cfg(unsigned int irq); 94extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 95extern void lock_vector_lock(void); 96extern void unlock_vector_lock(void); 97#ifdef CONFIG_SMP 98extern void vector_schedule_cleanup(struct irq_cfg *); 99extern void irq_complete_move(struct irq_cfg *cfg); 100#else 101static inline void vector_schedule_cleanup(struct irq_cfg *c) { } 102static inline void irq_complete_move(struct irq_cfg *c) { } 103#endif 104 105extern void apic_ack_edge(struct irq_data *data); 106#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 107static inline void lock_vector_lock(void) {} 108static inline void unlock_vector_lock(void) {} 109#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 110 111/* Statistics */ 112extern atomic_t irq_err_count; 113extern atomic_t irq_mis_count; 114 115extern void elcr_set_level_irq(unsigned int irq); 116 117extern char irq_entries_start[]; 118#ifdef CONFIG_TRACING 119#define trace_irq_entries_start irq_entries_start 120#endif 121 122extern char spurious_entries_start[]; 123 124#define VECTOR_UNUSED NULL 125#define VECTOR_SHUTDOWN ((void *)-1L) 126#define VECTOR_RETRIGGERED ((void *)-2L) 127 128typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 129DECLARE_PER_CPU(vector_irq_t, vector_irq); 130 131#endif /* !ASSEMBLY_ */ 132 133#endif /* _ASM_X86_HW_IRQ_H */ 134