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_AMDVI, 43 X86_IRQ_ALLOC_TYPE_UV, 44 }; 45 46 struct ioapic_alloc_info { 47 int pin; 48 int node; 49 u32 is_level : 1; 50 u32 active_low : 1; 51 u32 valid : 1; 52 }; 53 54 struct uv_alloc_info { 55 int limit; 56 int blade; 57 unsigned long offset; 58 char *name; 59 60 }; 61 62 /** 63 * irq_alloc_info - X86 specific interrupt allocation info 64 * @type: X86 specific allocation type 65 * @flags: Flags for allocation tweaks 66 * @devid: Device ID for allocations 67 * @hwirq: Associated hw interrupt number in the domain 68 * @mask: CPU mask for vector allocation 69 * @desc: Pointer to msi descriptor 70 * @data: Allocation specific data 71 * 72 * @ioapic: IOAPIC specific allocation data 73 * @uv: UV specific allocation data 74 */ 75 struct irq_alloc_info { 76 enum irq_alloc_type type; 77 u32 flags; 78 u32 devid; 79 irq_hw_number_t hwirq; 80 const struct cpumask *mask; 81 struct msi_desc *desc; 82 void *data; 83 84 union { 85 struct ioapic_alloc_info ioapic; 86 struct uv_alloc_info uv; 87 }; 88 }; 89 90 struct irq_cfg { 91 unsigned int dest_apicid; 92 unsigned int vector; 93 }; 94 95 extern struct irq_cfg *irq_cfg(unsigned int irq); 96 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 97 extern void lock_vector_lock(void); 98 extern void unlock_vector_lock(void); 99 #ifdef CONFIG_SMP 100 extern void vector_schedule_cleanup(struct irq_cfg *); 101 extern void irq_complete_move(struct irq_cfg *cfg); 102 #else 103 static inline void vector_schedule_cleanup(struct irq_cfg *c) { } 104 static inline void irq_complete_move(struct irq_cfg *c) { } 105 #endif 106 107 extern void apic_ack_edge(struct irq_data *data); 108 #else /* CONFIG_X86_LOCAL_APIC */ 109 static inline void lock_vector_lock(void) {} 110 static inline void unlock_vector_lock(void) {} 111 #endif /* CONFIG_X86_LOCAL_APIC */ 112 113 /* Statistics */ 114 extern atomic_t irq_err_count; 115 extern atomic_t irq_mis_count; 116 117 extern void elcr_set_level_irq(unsigned int irq); 118 119 extern char irq_entries_start[]; 120 #ifdef CONFIG_TRACING 121 #define trace_irq_entries_start irq_entries_start 122 #endif 123 124 extern char spurious_entries_start[]; 125 126 #define VECTOR_UNUSED NULL 127 #define VECTOR_SHUTDOWN ((void *)-1L) 128 #define VECTOR_RETRIGGERED ((void *)-2L) 129 130 typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 131 DECLARE_PER_CPU(vector_irq_t, vector_irq); 132 133 #endif /* !ASSEMBLY_ */ 134 135 #endif /* _ASM_X86_HW_IRQ_H */ 136