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#define IRQ_MATRIX_BITS NR_VECTORS 20 21#ifndef __ASSEMBLY__ 22 23#include <linux/percpu.h> 24#include <linux/profile.h> 25#include <linux/smp.h> 26 27#include <linux/atomic.h> 28#include <asm/irq.h> 29#include <asm/sections.h> 30 31#ifdef CONFIG_X86_LOCAL_APIC 32struct irq_data; 33struct pci_dev; 34struct msi_desc; 35 36enum irq_alloc_type { 37 X86_IRQ_ALLOC_TYPE_IOAPIC = 1, 38 X86_IRQ_ALLOC_TYPE_HPET, 39 X86_IRQ_ALLOC_TYPE_PCI_MSI, 40 X86_IRQ_ALLOC_TYPE_PCI_MSIX, 41 X86_IRQ_ALLOC_TYPE_DMAR, 42 X86_IRQ_ALLOC_TYPE_UV, 43 X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT, 44 X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT, 45}; 46 47struct ioapic_alloc_info { 48 int pin; 49 int node; 50 u32 trigger : 1; 51 u32 polarity : 1; 52 u32 valid : 1; 53 struct IO_APIC_route_entry *entry; 54}; 55 56struct uv_alloc_info { 57 int limit; 58 int blade; 59 unsigned long offset; 60 char *name; 61 62}; 63 64/** 65 * irq_alloc_info - X86 specific interrupt allocation info 66 * @type: X86 specific allocation type 67 * @flags: Flags for allocation tweaks 68 * @devid: Device ID for allocations 69 * @hwirq: Associated hw interrupt number in the domain 70 * @mask: CPU mask for vector allocation 71 * @desc: Pointer to msi descriptor 72 * @data: Allocation specific data 73 * 74 * @ioapic: IOAPIC specific allocation data 75 * @uv: UV specific allocation data 76*/ 77struct irq_alloc_info { 78 enum irq_alloc_type type; 79 u32 flags; 80 u32 devid; 81 irq_hw_number_t hwirq; 82 const struct cpumask *mask; 83 struct msi_desc *desc; 84 void *data; 85 86 union { 87 struct ioapic_alloc_info ioapic; 88 struct uv_alloc_info uv; 89 }; 90}; 91 92struct irq_cfg { 93 unsigned int dest_apicid; 94 unsigned int vector; 95}; 96 97extern struct irq_cfg *irq_cfg(unsigned int irq); 98extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 99extern void lock_vector_lock(void); 100extern void unlock_vector_lock(void); 101#ifdef CONFIG_SMP 102extern void send_cleanup_vector(struct irq_cfg *); 103extern void irq_complete_move(struct irq_cfg *cfg); 104#else 105static inline void send_cleanup_vector(struct irq_cfg *c) { } 106static inline void irq_complete_move(struct irq_cfg *c) { } 107#endif 108 109extern void apic_ack_edge(struct irq_data *data); 110#else /* CONFIG_X86_LOCAL_APIC */ 111static inline void lock_vector_lock(void) {} 112static inline void unlock_vector_lock(void) {} 113#endif /* CONFIG_X86_LOCAL_APIC */ 114 115/* Statistics */ 116extern atomic_t irq_err_count; 117extern atomic_t irq_mis_count; 118 119extern void elcr_set_level_irq(unsigned int irq); 120 121extern char irq_entries_start[]; 122#ifdef CONFIG_TRACING 123#define trace_irq_entries_start irq_entries_start 124#endif 125 126extern char spurious_entries_start[]; 127 128#define VECTOR_UNUSED NULL 129#define VECTOR_SHUTDOWN ((void *)-1L) 130#define VECTOR_RETRIGGERED ((void *)-2L) 131 132typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 133DECLARE_PER_CPU(vector_irq_t, vector_irq); 134 135#endif /* !ASSEMBLY_ */ 136 137#endif /* _ASM_X86_HW_IRQ_H */ 138