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_X86_LOCAL_APIC 50 struct irq_data; 51 struct pci_dev; 52 struct msi_desc; 53 54 enum irq_alloc_type { 55 X86_IRQ_ALLOC_TYPE_IOAPIC = 1, 56 X86_IRQ_ALLOC_TYPE_HPET, 57 X86_IRQ_ALLOC_TYPE_MSI, 58 X86_IRQ_ALLOC_TYPE_MSIX, 59 X86_IRQ_ALLOC_TYPE_DMAR, 60 X86_IRQ_ALLOC_TYPE_UV, 61 }; 62 63 struct irq_alloc_info { 64 enum irq_alloc_type type; 65 u32 flags; 66 const struct cpumask *mask; /* CPU mask for vector allocation */ 67 union { 68 int unused; 69 #ifdef CONFIG_HPET_TIMER 70 struct { 71 int hpet_id; 72 int hpet_index; 73 void *hpet_data; 74 }; 75 #endif 76 #ifdef CONFIG_PCI_MSI 77 struct { 78 struct pci_dev *msi_dev; 79 irq_hw_number_t msi_hwirq; 80 }; 81 #endif 82 #ifdef CONFIG_X86_IO_APIC 83 struct { 84 int ioapic_id; 85 int ioapic_pin; 86 int ioapic_node; 87 u32 ioapic_trigger : 1; 88 u32 ioapic_polarity : 1; 89 u32 ioapic_valid : 1; 90 struct IO_APIC_route_entry *ioapic_entry; 91 }; 92 #endif 93 #ifdef CONFIG_DMAR_TABLE 94 struct { 95 int dmar_id; 96 void *dmar_data; 97 }; 98 #endif 99 #ifdef CONFIG_HT_IRQ 100 struct { 101 int ht_pos; 102 int ht_idx; 103 struct pci_dev *ht_dev; 104 void *ht_update; 105 }; 106 #endif 107 #ifdef CONFIG_X86_UV 108 struct { 109 int uv_limit; 110 int uv_blade; 111 unsigned long uv_offset; 112 char *uv_name; 113 }; 114 #endif 115 #if IS_ENABLED(CONFIG_VMD) 116 struct { 117 struct msi_desc *desc; 118 }; 119 #endif 120 }; 121 }; 122 123 struct irq_cfg { 124 unsigned int dest_apicid; 125 u8 vector; 126 u8 old_vector; 127 }; 128 129 extern struct irq_cfg *irq_cfg(unsigned int irq); 130 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 131 extern void lock_vector_lock(void); 132 extern void unlock_vector_lock(void); 133 extern void setup_vector_irq(int cpu); 134 #ifdef CONFIG_SMP 135 extern void send_cleanup_vector(struct irq_cfg *); 136 extern void irq_complete_move(struct irq_cfg *cfg); 137 #else 138 static inline void send_cleanup_vector(struct irq_cfg *c) { } 139 static inline void irq_complete_move(struct irq_cfg *c) { } 140 #endif 141 142 extern void apic_ack_edge(struct irq_data *data); 143 #else /* CONFIG_X86_LOCAL_APIC */ 144 static inline void lock_vector_lock(void) {} 145 static inline void unlock_vector_lock(void) {} 146 #endif /* CONFIG_X86_LOCAL_APIC */ 147 148 /* Statistics */ 149 extern atomic_t irq_err_count; 150 extern atomic_t irq_mis_count; 151 152 extern void elcr_set_level_irq(unsigned int irq); 153 154 extern char irq_entries_start[]; 155 #ifdef CONFIG_TRACING 156 #define trace_irq_entries_start irq_entries_start 157 #endif 158 159 #define VECTOR_UNUSED NULL 160 #define VECTOR_RETRIGGERED ((void *)~0UL) 161 162 typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 163 DECLARE_PER_CPU(vector_irq_t, vector_irq); 164 165 #endif /* !ASSEMBLY_ */ 166 167 #endif /* _ASM_X86_HW_IRQ_H */ 168