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 error_interrupt(void); 34 extern asmlinkage void irq_work_interrupt(void); 35 36 extern asmlinkage void spurious_interrupt(void); 37 extern asmlinkage void thermal_interrupt(void); 38 extern asmlinkage void reschedule_interrupt(void); 39 40 extern asmlinkage void irq_move_cleanup_interrupt(void); 41 extern asmlinkage void reboot_interrupt(void); 42 extern asmlinkage void threshold_interrupt(void); 43 extern asmlinkage void deferred_error_interrupt(void); 44 45 extern asmlinkage void call_function_interrupt(void); 46 extern asmlinkage void call_function_single_interrupt(void); 47 48 #ifdef CONFIG_TRACING 49 /* Interrupt handlers registered during init_IRQ */ 50 extern void trace_apic_timer_interrupt(void); 51 extern void trace_x86_platform_ipi(void); 52 extern void trace_error_interrupt(void); 53 extern void trace_irq_work_interrupt(void); 54 extern void trace_spurious_interrupt(void); 55 extern void trace_thermal_interrupt(void); 56 extern void trace_reschedule_interrupt(void); 57 extern void trace_threshold_interrupt(void); 58 extern void trace_deferred_error_interrupt(void); 59 extern void trace_call_function_interrupt(void); 60 extern void trace_call_function_single_interrupt(void); 61 #define trace_irq_move_cleanup_interrupt irq_move_cleanup_interrupt 62 #define trace_reboot_interrupt reboot_interrupt 63 #define trace_kvm_posted_intr_ipi kvm_posted_intr_ipi 64 #define trace_kvm_posted_intr_wakeup_ipi kvm_posted_intr_wakeup_ipi 65 #endif /* CONFIG_TRACING */ 66 67 #ifdef CONFIG_X86_LOCAL_APIC 68 struct irq_data; 69 struct pci_dev; 70 struct msi_desc; 71 72 enum irq_alloc_type { 73 X86_IRQ_ALLOC_TYPE_IOAPIC = 1, 74 X86_IRQ_ALLOC_TYPE_HPET, 75 X86_IRQ_ALLOC_TYPE_MSI, 76 X86_IRQ_ALLOC_TYPE_MSIX, 77 X86_IRQ_ALLOC_TYPE_DMAR, 78 X86_IRQ_ALLOC_TYPE_UV, 79 }; 80 81 struct irq_alloc_info { 82 enum irq_alloc_type type; 83 u32 flags; 84 const struct cpumask *mask; /* CPU mask for vector allocation */ 85 union { 86 int unused; 87 #ifdef CONFIG_HPET_TIMER 88 struct { 89 int hpet_id; 90 int hpet_index; 91 void *hpet_data; 92 }; 93 #endif 94 #ifdef CONFIG_PCI_MSI 95 struct { 96 struct pci_dev *msi_dev; 97 irq_hw_number_t msi_hwirq; 98 }; 99 #endif 100 #ifdef CONFIG_X86_IO_APIC 101 struct { 102 int ioapic_id; 103 int ioapic_pin; 104 int ioapic_node; 105 u32 ioapic_trigger : 1; 106 u32 ioapic_polarity : 1; 107 u32 ioapic_valid : 1; 108 struct IO_APIC_route_entry *ioapic_entry; 109 }; 110 #endif 111 #ifdef CONFIG_DMAR_TABLE 112 struct { 113 int dmar_id; 114 void *dmar_data; 115 }; 116 #endif 117 #ifdef CONFIG_HT_IRQ 118 struct { 119 int ht_pos; 120 int ht_idx; 121 struct pci_dev *ht_dev; 122 void *ht_update; 123 }; 124 #endif 125 #ifdef CONFIG_X86_UV 126 struct { 127 int uv_limit; 128 int uv_blade; 129 unsigned long uv_offset; 130 char *uv_name; 131 }; 132 #endif 133 #if IS_ENABLED(CONFIG_VMD) 134 struct { 135 struct msi_desc *desc; 136 }; 137 #endif 138 }; 139 }; 140 141 struct irq_cfg { 142 unsigned int dest_apicid; 143 u8 vector; 144 u8 old_vector; 145 }; 146 147 extern struct irq_cfg *irq_cfg(unsigned int irq); 148 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 149 extern void lock_vector_lock(void); 150 extern void unlock_vector_lock(void); 151 extern void setup_vector_irq(int cpu); 152 #ifdef CONFIG_SMP 153 extern void send_cleanup_vector(struct irq_cfg *); 154 extern void irq_complete_move(struct irq_cfg *cfg); 155 #else 156 static inline void send_cleanup_vector(struct irq_cfg *c) { } 157 static inline void irq_complete_move(struct irq_cfg *c) { } 158 #endif 159 160 extern void apic_ack_edge(struct irq_data *data); 161 #else /* CONFIG_X86_LOCAL_APIC */ 162 static inline void lock_vector_lock(void) {} 163 static inline void unlock_vector_lock(void) {} 164 #endif /* CONFIG_X86_LOCAL_APIC */ 165 166 /* Statistics */ 167 extern atomic_t irq_err_count; 168 extern atomic_t irq_mis_count; 169 170 extern void elcr_set_level_irq(unsigned int irq); 171 172 extern char irq_entries_start[]; 173 #ifdef CONFIG_TRACING 174 #define trace_irq_entries_start irq_entries_start 175 #endif 176 177 #define VECTOR_UNUSED NULL 178 #define VECTOR_RETRIGGERED ((void *)~0UL) 179 180 typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 181 DECLARE_PER_CPU(vector_irq_t, vector_irq); 182 183 #endif /* !ASSEMBLY_ */ 184 185 #endif /* _ASM_X86_HW_IRQ_H */ 186