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 32 struct irq_data; 33 struct pci_dev; 34 struct msi_desc; 35 36 enum 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 47 struct ioapic_alloc_info { 48 int pin; 49 int node; 50 u32 is_level : 1; 51 u32 active_low : 1; 52 u32 valid : 1; 53 struct IO_APIC_route_entry *entry; 54 }; 55 56 struct 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 */ 77 struct 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 92 struct irq_cfg { 93 unsigned int dest_apicid; 94 unsigned int vector; 95 }; 96 97 extern struct irq_cfg *irq_cfg(unsigned int irq); 98 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 99 extern void lock_vector_lock(void); 100 extern void unlock_vector_lock(void); 101 #ifdef CONFIG_SMP 102 extern void send_cleanup_vector(struct irq_cfg *); 103 extern void irq_complete_move(struct irq_cfg *cfg); 104 #else 105 static inline void send_cleanup_vector(struct irq_cfg *c) { } 106 static inline void irq_complete_move(struct irq_cfg *c) { } 107 #endif 108 109 extern void apic_ack_edge(struct irq_data *data); 110 #else /* CONFIG_X86_LOCAL_APIC */ 111 static inline void lock_vector_lock(void) {} 112 static inline void unlock_vector_lock(void) {} 113 #endif /* CONFIG_X86_LOCAL_APIC */ 114 115 /* Statistics */ 116 extern atomic_t irq_err_count; 117 extern atomic_t irq_mis_count; 118 119 extern void elcr_set_level_irq(unsigned int irq); 120 121 extern char irq_entries_start[]; 122 #ifdef CONFIG_TRACING 123 #define trace_irq_entries_start irq_entries_start 124 #endif 125 126 extern char spurious_entries_start[]; 127 128 #define VECTOR_UNUSED NULL 129 #define VECTOR_SHUTDOWN ((void *)-1L) 130 #define VECTOR_RETRIGGERED ((void *)-2L) 131 132 typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 133 DECLARE_PER_CPU(vector_irq_t, vector_irq); 134 135 #endif /* !ASSEMBLY_ */ 136 137 #endif /* _ASM_X86_HW_IRQ_H */ 138