1 #ifndef _ASM_X86_HW_IRQ_H 2 #define _ASM_X86_HW_IRQ_H 3 4 /* 5 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar 6 * 7 * moved some of the old arch/i386/kernel/irq.h to here. VY 8 * 9 * IRQ/IPI changes taken from work by Thomas Radke 10 * <tomsoft@informatik.tu-chemnitz.de> 11 * 12 * hacked by Andi Kleen for x86-64. 13 * unified by tglx 14 */ 15 16 #include <asm/irq_vectors.h> 17 18 #ifndef __ASSEMBLY__ 19 20 #include <linux/percpu.h> 21 #include <linux/profile.h> 22 #include <linux/smp.h> 23 24 #include <linux/atomic.h> 25 #include <asm/irq.h> 26 #include <asm/sections.h> 27 28 /* Interrupt handlers registered during init_IRQ */ 29 extern asmlinkage void apic_timer_interrupt(void); 30 extern asmlinkage void x86_platform_ipi(void); 31 extern asmlinkage void kvm_posted_intr_ipi(void); 32 extern asmlinkage void kvm_posted_intr_wakeup_ipi(void); 33 extern asmlinkage void kvm_posted_intr_nested_ipi(void); 34 extern asmlinkage void error_interrupt(void); 35 extern asmlinkage void irq_work_interrupt(void); 36 37 extern asmlinkage void spurious_interrupt(void); 38 extern asmlinkage void thermal_interrupt(void); 39 extern asmlinkage void reschedule_interrupt(void); 40 41 extern asmlinkage void irq_move_cleanup_interrupt(void); 42 extern asmlinkage void reboot_interrupt(void); 43 extern asmlinkage void threshold_interrupt(void); 44 extern asmlinkage void deferred_error_interrupt(void); 45 46 extern asmlinkage void call_function_interrupt(void); 47 extern asmlinkage void call_function_single_interrupt(void); 48 49 #ifdef CONFIG_TRACING 50 /* Interrupt handlers registered during init_IRQ */ 51 extern void trace_apic_timer_interrupt(void); 52 extern void trace_x86_platform_ipi(void); 53 extern void trace_error_interrupt(void); 54 extern void trace_irq_work_interrupt(void); 55 extern void trace_spurious_interrupt(void); 56 extern void trace_thermal_interrupt(void); 57 extern void trace_reschedule_interrupt(void); 58 extern void trace_threshold_interrupt(void); 59 extern void trace_deferred_error_interrupt(void); 60 extern void trace_call_function_interrupt(void); 61 extern void trace_call_function_single_interrupt(void); 62 #define trace_irq_move_cleanup_interrupt irq_move_cleanup_interrupt 63 #define trace_reboot_interrupt reboot_interrupt 64 #define trace_kvm_posted_intr_ipi kvm_posted_intr_ipi 65 #define trace_kvm_posted_intr_wakeup_ipi kvm_posted_intr_wakeup_ipi 66 #define trace_kvm_posted_intr_nested_ipi kvm_posted_intr_nested_ipi 67 #endif /* CONFIG_TRACING */ 68 69 #ifdef CONFIG_X86_LOCAL_APIC 70 struct irq_data; 71 struct pci_dev; 72 struct msi_desc; 73 74 enum irq_alloc_type { 75 X86_IRQ_ALLOC_TYPE_IOAPIC = 1, 76 X86_IRQ_ALLOC_TYPE_HPET, 77 X86_IRQ_ALLOC_TYPE_MSI, 78 X86_IRQ_ALLOC_TYPE_MSIX, 79 X86_IRQ_ALLOC_TYPE_DMAR, 80 X86_IRQ_ALLOC_TYPE_UV, 81 }; 82 83 struct irq_alloc_info { 84 enum irq_alloc_type type; 85 u32 flags; 86 const struct cpumask *mask; /* CPU mask for vector allocation */ 87 union { 88 int unused; 89 #ifdef CONFIG_HPET_TIMER 90 struct { 91 int hpet_id; 92 int hpet_index; 93 void *hpet_data; 94 }; 95 #endif 96 #ifdef CONFIG_PCI_MSI 97 struct { 98 struct pci_dev *msi_dev; 99 irq_hw_number_t msi_hwirq; 100 }; 101 #endif 102 #ifdef CONFIG_X86_IO_APIC 103 struct { 104 int ioapic_id; 105 int ioapic_pin; 106 int ioapic_node; 107 u32 ioapic_trigger : 1; 108 u32 ioapic_polarity : 1; 109 u32 ioapic_valid : 1; 110 struct IO_APIC_route_entry *ioapic_entry; 111 }; 112 #endif 113 #ifdef CONFIG_DMAR_TABLE 114 struct { 115 int dmar_id; 116 void *dmar_data; 117 }; 118 #endif 119 #ifdef CONFIG_HT_IRQ 120 struct { 121 int ht_pos; 122 int ht_idx; 123 struct pci_dev *ht_dev; 124 void *ht_update; 125 }; 126 #endif 127 #ifdef CONFIG_X86_UV 128 struct { 129 int uv_limit; 130 int uv_blade; 131 unsigned long uv_offset; 132 char *uv_name; 133 }; 134 #endif 135 #if IS_ENABLED(CONFIG_VMD) 136 struct { 137 struct msi_desc *desc; 138 }; 139 #endif 140 }; 141 }; 142 143 struct irq_cfg { 144 unsigned int dest_apicid; 145 u8 vector; 146 u8 old_vector; 147 }; 148 149 extern struct irq_cfg *irq_cfg(unsigned int irq); 150 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 151 extern void lock_vector_lock(void); 152 extern void unlock_vector_lock(void); 153 extern void setup_vector_irq(int cpu); 154 #ifdef CONFIG_SMP 155 extern void send_cleanup_vector(struct irq_cfg *); 156 extern void irq_complete_move(struct irq_cfg *cfg); 157 #else 158 static inline void send_cleanup_vector(struct irq_cfg *c) { } 159 static inline void irq_complete_move(struct irq_cfg *c) { } 160 #endif 161 162 extern void apic_ack_edge(struct irq_data *data); 163 #else /* CONFIG_X86_LOCAL_APIC */ 164 static inline void lock_vector_lock(void) {} 165 static inline void unlock_vector_lock(void) {} 166 #endif /* CONFIG_X86_LOCAL_APIC */ 167 168 /* Statistics */ 169 extern atomic_t irq_err_count; 170 extern atomic_t irq_mis_count; 171 172 extern void elcr_set_level_irq(unsigned int irq); 173 174 extern char irq_entries_start[]; 175 #ifdef CONFIG_TRACING 176 #define trace_irq_entries_start irq_entries_start 177 #endif 178 179 #define VECTOR_UNUSED NULL 180 #define VECTOR_RETRIGGERED ((void *)~0UL) 181 182 typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 183 DECLARE_PER_CPU(vector_irq_t, vector_irq); 184 185 #endif /* !ASSEMBLY_ */ 186 187 #endif /* _ASM_X86_HW_IRQ_H */ 188