arch/x86/include/asm/hw_irq.h

   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 */