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 kvm_posted_intr_ipi(void); 33 extern asmlinkage void kvm_posted_intr_wakeup_ipi(void); 34 extern asmlinkage void kvm_posted_intr_nested_ipi(void); 35 extern asmlinkage void irq_work_interrupt(void); 36 extern asmlinkage void uv_bau_message_intr1(void); 37 38 extern asmlinkage void thermal_interrupt(void); 39 extern asmlinkage void reschedule_interrupt(void); 40 41 extern asmlinkage void threshold_interrupt(void); 42 extern asmlinkage void deferred_error_interrupt(void); 43 44 #ifdef CONFIG_X86_LOCAL_APIC 45 struct irq_data; 46 struct pci_dev; 47 struct msi_desc; 48 49 enum irq_alloc_type { 50 X86_IRQ_ALLOC_TYPE_IOAPIC = 1, 51 X86_IRQ_ALLOC_TYPE_HPET, 52 X86_IRQ_ALLOC_TYPE_MSI, 53 X86_IRQ_ALLOC_TYPE_MSIX, 54 X86_IRQ_ALLOC_TYPE_DMAR, 55 X86_IRQ_ALLOC_TYPE_UV, 56 }; 57 58 struct irq_alloc_info { 59 enum irq_alloc_type type; 60 u32 flags; 61 const struct cpumask *mask; /* CPU mask for vector allocation */ 62 union { 63 int unused; 64 #ifdef CONFIG_HPET_TIMER 65 struct { 66 int hpet_id; 67 int hpet_index; 68 void *hpet_data; 69 }; 70 #endif 71 #ifdef CONFIG_PCI_MSI 72 struct { 73 struct pci_dev *msi_dev; 74 irq_hw_number_t msi_hwirq; 75 }; 76 #endif 77 #ifdef CONFIG_X86_IO_APIC 78 struct { 79 int ioapic_id; 80 int ioapic_pin; 81 int ioapic_node; 82 u32 ioapic_trigger : 1; 83 u32 ioapic_polarity : 1; 84 u32 ioapic_valid : 1; 85 struct IO_APIC_route_entry *ioapic_entry; 86 }; 87 #endif 88 #ifdef CONFIG_DMAR_TABLE 89 struct { 90 int dmar_id; 91 void *dmar_data; 92 }; 93 #endif 94 #ifdef CONFIG_X86_UV 95 struct { 96 int uv_limit; 97 int uv_blade; 98 unsigned long uv_offset; 99 char *uv_name; 100 }; 101 #endif 102 #if IS_ENABLED(CONFIG_VMD) 103 struct { 104 struct msi_desc *desc; 105 }; 106 #endif 107 }; 108 }; 109 110 struct irq_cfg { 111 unsigned int dest_apicid; 112 unsigned int vector; 113 }; 114 115 extern struct irq_cfg *irq_cfg(unsigned int irq); 116 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 117 extern void lock_vector_lock(void); 118 extern void unlock_vector_lock(void); 119 #ifdef CONFIG_SMP 120 extern void send_cleanup_vector(struct irq_cfg *); 121 extern void irq_complete_move(struct irq_cfg *cfg); 122 #else 123 static inline void send_cleanup_vector(struct irq_cfg *c) { } 124 static inline void irq_complete_move(struct irq_cfg *c) { } 125 #endif 126 127 extern void apic_ack_edge(struct irq_data *data); 128 #else /* CONFIG_X86_LOCAL_APIC */ 129 static inline void lock_vector_lock(void) {} 130 static inline void unlock_vector_lock(void) {} 131 #endif /* CONFIG_X86_LOCAL_APIC */ 132 133 /* Statistics */ 134 extern atomic_t irq_err_count; 135 extern atomic_t irq_mis_count; 136 137 extern void elcr_set_level_irq(unsigned int irq); 138 139 extern char irq_entries_start[]; 140 #ifdef CONFIG_TRACING 141 #define trace_irq_entries_start irq_entries_start 142 #endif 143 144 extern char spurious_entries_start[]; 145 146 #define VECTOR_UNUSED NULL 147 #define VECTOR_SHUTDOWN ((void *)-1L) 148 #define VECTOR_RETRIGGERED ((void *)-2L) 149 150 typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 151 DECLARE_PER_CPU(vector_irq_t, vector_irq); 152 153 #endif /* !ASSEMBLY_ */ 154 155 #endif /* _ASM_X86_HW_IRQ_H */ 156