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