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 */ 29extern asmlinkage void apic_timer_interrupt(void); 30extern asmlinkage void x86_platform_ipi(void); 31extern asmlinkage void kvm_posted_intr_ipi(void); 32extern asmlinkage void kvm_posted_intr_wakeup_ipi(void); 33extern asmlinkage void error_interrupt(void); 34extern asmlinkage void irq_work_interrupt(void); 35 36extern asmlinkage void spurious_interrupt(void); 37extern asmlinkage void thermal_interrupt(void); 38extern asmlinkage void reschedule_interrupt(void); 39 40extern asmlinkage void irq_move_cleanup_interrupt(void); 41extern asmlinkage void reboot_interrupt(void); 42extern asmlinkage void threshold_interrupt(void); 43extern asmlinkage void deferred_error_interrupt(void); 44 45extern asmlinkage void call_function_interrupt(void); 46extern asmlinkage void call_function_single_interrupt(void); 47 48#ifdef CONFIG_TRACING 49/* Interrupt handlers registered during init_IRQ */ 50extern void trace_apic_timer_interrupt(void); 51extern void trace_x86_platform_ipi(void); 52extern void trace_error_interrupt(void); 53extern void trace_irq_work_interrupt(void); 54extern void trace_spurious_interrupt(void); 55extern void trace_thermal_interrupt(void); 56extern void trace_reschedule_interrupt(void); 57extern void trace_threshold_interrupt(void); 58extern void trace_deferred_error_interrupt(void); 59extern void trace_call_function_interrupt(void); 60extern 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 68struct irq_data; 69struct pci_dev; 70struct msi_desc; 71 72enum 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 81struct 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 }; 134}; 135 136struct irq_cfg { 137 unsigned int dest_apicid; 138 u8 vector; 139}; 140 141extern struct irq_cfg *irq_cfg(unsigned int irq); 142extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 143extern void lock_vector_lock(void); 144extern void unlock_vector_lock(void); 145extern void setup_vector_irq(int cpu); 146#ifdef CONFIG_SMP 147extern void send_cleanup_vector(struct irq_cfg *); 148extern void irq_complete_move(struct irq_cfg *cfg); 149#else 150static inline void send_cleanup_vector(struct irq_cfg *c) { } 151static inline void irq_complete_move(struct irq_cfg *c) { } 152#endif 153 154extern void apic_ack_edge(struct irq_data *data); 155#else /* CONFIG_X86_LOCAL_APIC */ 156static inline void lock_vector_lock(void) {} 157static inline void unlock_vector_lock(void) {} 158#endif /* CONFIG_X86_LOCAL_APIC */ 159 160/* Statistics */ 161extern atomic_t irq_err_count; 162extern atomic_t irq_mis_count; 163 164extern void elcr_set_level_irq(unsigned int irq); 165 166/* SMP */ 167extern __visible void smp_apic_timer_interrupt(struct pt_regs *); 168extern __visible void smp_spurious_interrupt(struct pt_regs *); 169extern __visible void smp_x86_platform_ipi(struct pt_regs *); 170extern __visible void smp_error_interrupt(struct pt_regs *); 171#ifdef CONFIG_X86_IO_APIC 172extern asmlinkage void smp_irq_move_cleanup_interrupt(void); 173#endif 174#ifdef CONFIG_SMP 175extern __visible void smp_reschedule_interrupt(struct pt_regs *); 176extern __visible void smp_call_function_interrupt(struct pt_regs *); 177extern __visible void smp_call_function_single_interrupt(struct pt_regs *); 178#endif 179 180extern char irq_entries_start[]; 181#ifdef CONFIG_TRACING 182#define trace_irq_entries_start irq_entries_start 183#endif 184 185#define VECTOR_UNUSED NULL 186#define VECTOR_RETRIGGERED ((void *)~0UL) 187 188typedef struct irq_desc* vector_irq_t[NR_VECTORS]; 189DECLARE_PER_CPU(vector_irq_t, vector_irq); 190 191#endif /* !ASSEMBLY_ */ 192 193#endif /* _ASM_X86_HW_IRQ_H */ 194