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 extern asmlinkage void uv_bau_message_intr1(void); 40 41 extern asmlinkage void spurious_interrupt(void); 42 extern asmlinkage void spurious_apic_interrupt(void); 43 extern asmlinkage void thermal_interrupt(void); 44 extern asmlinkage void reschedule_interrupt(void); 45 46 extern asmlinkage void irq_move_cleanup_interrupt(void); 47 extern asmlinkage void reboot_interrupt(void); 48 extern asmlinkage void threshold_interrupt(void); 49 extern asmlinkage void deferred_error_interrupt(void); 50 51 extern asmlinkage void call_function_interrupt(void); 52 extern asmlinkage void call_function_single_interrupt(void); 53 54 #ifdef CONFIG_X86_LOCAL_APIC 55 struct irq_data; 56 struct pci_dev; 57 struct msi_desc; 58 59 enum irq_alloc_type { 60 X86_IRQ_ALLOC_TYPE_IOAPIC = 1, 61 X86_IRQ_ALLOC_TYPE_HPET, 62 X86_IRQ_ALLOC_TYPE_MSI, 63 X86_IRQ_ALLOC_TYPE_MSIX, 64 X86_IRQ_ALLOC_TYPE_DMAR, 65 X86_IRQ_ALLOC_TYPE_UV, 66 }; 67 68 struct irq_alloc_info { 69 enum irq_alloc_type type; 70 u32 flags; 71 const struct cpumask *mask; /* CPU mask for vector allocation */ 72 union { 73 int unused; 74 #ifdef CONFIG_HPET_TIMER 75 struct { 76 int hpet_id; 77 int hpet_index; 78 void *hpet_data; 79 }; 80 #endif 81 #ifdef CONFIG_PCI_MSI 82 struct { 83 struct pci_dev *msi_dev; 84 irq_hw_number_t msi_hwirq; 85 }; 86 #endif 87 #ifdef CONFIG_X86_IO_APIC 88 struct { 89 int ioapic_id; 90 int ioapic_pin; 91 int ioapic_node; 92 u32 ioapic_trigger : 1; 93 u32 ioapic_polarity : 1; 94 u32 ioapic_valid : 1; 95 struct IO_APIC_route_entry *ioapic_entry; 96 }; 97 #endif 98 #ifdef CONFIG_DMAR_TABLE 99 struct { 100 int dmar_id; 101 void *dmar_data; 102 }; 103 #endif 104 #ifdef CONFIG_X86_UV 105 struct { 106 int uv_limit; 107 int uv_blade; 108 unsigned long uv_offset; 109 char *uv_name; 110 }; 111 #endif 112 #if IS_ENABLED(CONFIG_VMD) 113 struct { 114 struct msi_desc *desc; 115 }; 116 #endif 117 }; 118 }; 119 120 struct irq_cfg { 121 unsigned int dest_apicid; 122 unsigned int vector; 123 }; 124 125 extern struct irq_cfg *irq_cfg(unsigned int irq); 126 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 127 extern void lock_vector_lock(void); 128 extern void unlock_vector_lock(void); 129 #ifdef CONFIG_SMP 130 extern void send_cleanup_vector(struct irq_cfg *); 131 extern void irq_complete_move(struct irq_cfg *cfg); 132 #else 133 static inline void send_cleanup_vector(struct irq_cfg *c) { } 134 static inline void irq_complete_move(struct irq_cfg *c) { } 135 #endif 136 137 extern void apic_ack_edge(struct irq_data *data); 138 #else /* CONFIG_X86_LOCAL_APIC */ 139 static inline void lock_vector_lock(void) {} 140 static inline void unlock_vector_lock(void) {} 141 #endif /* CONFIG_X86_LOCAL_APIC */ 142 143 /* Statistics */ 144 extern atomic_t irq_err_count; 145 extern atomic_t irq_mis_count; 146 147 extern void elcr_set_level_irq(unsigned int irq); 148 149 extern char irq_entries_start[]; 150 #ifdef CONFIG_TRACING 151 #define trace_irq_entries_start irq_entries_start 152 #endif 153 154 extern char spurious_entries_start[]; 155 156 #define VECTOR_UNUSED NULL 157 #define VECTOR_SHUTDOWN ((void *)-1L) 158 #define VECTOR_RETRIGGERED ((void *)-2L) 159 160 typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 161 DECLARE_PER_CPU(vector_irq_t, vector_irq); 162 163 #endif /* !ASSEMBLY_ */ 164 165 #endif /* _ASM_X86_HW_IRQ_H */ 166