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 /* Interrupt handlers registered during init_IRQ */ 32 extern asmlinkage void apic_timer_interrupt(void); 33 extern asmlinkage void x86_platform_ipi(void); 34 extern asmlinkage void kvm_posted_intr_ipi(void); 35 extern asmlinkage void kvm_posted_intr_wakeup_ipi(void); 36 extern asmlinkage void kvm_posted_intr_nested_ipi(void); 37 extern asmlinkage void error_interrupt(void); 38 extern asmlinkage void irq_work_interrupt(void); 39 40 extern asmlinkage void spurious_interrupt(void); 41 extern asmlinkage void thermal_interrupt(void); 42 extern asmlinkage void reschedule_interrupt(void); 43 44 extern asmlinkage void irq_move_cleanup_interrupt(void); 45 extern asmlinkage void reboot_interrupt(void); 46 extern asmlinkage void threshold_interrupt(void); 47 extern asmlinkage void deferred_error_interrupt(void); 48 49 extern asmlinkage void call_function_interrupt(void); 50 extern asmlinkage void call_function_single_interrupt(void); 51 52 #ifdef CONFIG_X86_LOCAL_APIC 53 struct irq_data; 54 struct pci_dev; 55 struct msi_desc; 56 57 enum irq_alloc_type { 58 X86_IRQ_ALLOC_TYPE_IOAPIC = 1, 59 X86_IRQ_ALLOC_TYPE_HPET, 60 X86_IRQ_ALLOC_TYPE_MSI, 61 X86_IRQ_ALLOC_TYPE_MSIX, 62 X86_IRQ_ALLOC_TYPE_DMAR, 63 X86_IRQ_ALLOC_TYPE_UV, 64 }; 65 66 struct irq_alloc_info { 67 enum irq_alloc_type type; 68 u32 flags; 69 const struct cpumask *mask; /* CPU mask for vector allocation */ 70 union { 71 int unused; 72 #ifdef CONFIG_HPET_TIMER 73 struct { 74 int hpet_id; 75 int hpet_index; 76 void *hpet_data; 77 }; 78 #endif 79 #ifdef CONFIG_PCI_MSI 80 struct { 81 struct pci_dev *msi_dev; 82 irq_hw_number_t msi_hwirq; 83 }; 84 #endif 85 #ifdef CONFIG_X86_IO_APIC 86 struct { 87 int ioapic_id; 88 int ioapic_pin; 89 int ioapic_node; 90 u32 ioapic_trigger : 1; 91 u32 ioapic_polarity : 1; 92 u32 ioapic_valid : 1; 93 struct IO_APIC_route_entry *ioapic_entry; 94 }; 95 #endif 96 #ifdef CONFIG_DMAR_TABLE 97 struct { 98 int dmar_id; 99 void *dmar_data; 100 }; 101 #endif 102 #ifdef CONFIG_X86_UV 103 struct { 104 int uv_limit; 105 int uv_blade; 106 unsigned long uv_offset; 107 char *uv_name; 108 }; 109 #endif 110 #if IS_ENABLED(CONFIG_VMD) 111 struct { 112 struct msi_desc *desc; 113 }; 114 #endif 115 }; 116 }; 117 118 struct irq_cfg { 119 unsigned int dest_apicid; 120 unsigned int vector; 121 }; 122 123 extern struct irq_cfg *irq_cfg(unsigned int irq); 124 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 125 extern void lock_vector_lock(void); 126 extern void unlock_vector_lock(void); 127 #ifdef CONFIG_SMP 128 extern void send_cleanup_vector(struct irq_cfg *); 129 extern void irq_complete_move(struct irq_cfg *cfg); 130 #else 131 static inline void send_cleanup_vector(struct irq_cfg *c) { } 132 static inline void irq_complete_move(struct irq_cfg *c) { } 133 #endif 134 135 extern void apic_ack_edge(struct irq_data *data); 136 #else /* CONFIG_X86_LOCAL_APIC */ 137 static inline void lock_vector_lock(void) {} 138 static inline void unlock_vector_lock(void) {} 139 #endif /* CONFIG_X86_LOCAL_APIC */ 140 141 /* Statistics */ 142 extern atomic_t irq_err_count; 143 extern atomic_t irq_mis_count; 144 145 extern void elcr_set_level_irq(unsigned int irq); 146 147 extern char irq_entries_start[]; 148 #ifdef CONFIG_TRACING 149 #define trace_irq_entries_start irq_entries_start 150 #endif 151 152 #define VECTOR_UNUSED NULL 153 #define VECTOR_RETRIGGERED ((void *)~0UL) 154 155 typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 156 DECLARE_PER_CPU(vector_irq_t, vector_irq); 157 158 #endif /* !ASSEMBLY_ */ 159 160 #endif /* _ASM_X86_HW_IRQ_H */ 161