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 30 struct irq_data; 31 struct pci_dev; 32 struct msi_desc; 33 34 enum 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 44 struct 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 52 struct 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 */ 73 struct 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 88 struct irq_cfg { 89 unsigned int dest_apicid; 90 unsigned int vector; 91 }; 92 93 extern struct irq_cfg *irq_cfg(unsigned int irq); 94 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 95 extern void lock_vector_lock(void); 96 extern void unlock_vector_lock(void); 97 #ifdef CONFIG_SMP 98 extern void vector_schedule_cleanup(struct irq_cfg *); 99 extern void irq_complete_move(struct irq_cfg *cfg); 100 #else 101 static inline void vector_schedule_cleanup(struct irq_cfg *c) { } 102 static inline void irq_complete_move(struct irq_cfg *c) { } 103 #endif 104 105 extern void apic_ack_edge(struct irq_data *data); 106 #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 107 static inline void lock_vector_lock(void) {} 108 static inline void unlock_vector_lock(void) {} 109 #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 110 111 /* Statistics */ 112 extern atomic_t irq_err_count; 113 extern atomic_t irq_mis_count; 114 115 extern void elcr_set_level_irq(unsigned int irq); 116 117 extern char irq_entries_start[]; 118 #ifdef CONFIG_TRACING 119 #define trace_irq_entries_start irq_entries_start 120 #endif 121 122 extern char spurious_entries_start[]; 123 124 #define VECTOR_UNUSED NULL 125 #define VECTOR_SHUTDOWN ((void *)-1L) 126 #define VECTOR_RETRIGGERED ((void *)-2L) 127 128 typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 129 DECLARE_PER_CPU(vector_irq_t, vector_irq); 130 131 #endif /* !ASSEMBLY_ */ 132 133 #endif /* _ASM_X86_HW_IRQ_H */ 134