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_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 */