arch/x86/include/asm/hw_irq.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_HW_IRQ_H
   3 #define _ASM_X86_HW_IRQ_H
   4
   5 /*
   6  * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
   7  *
   8  * moved some of the old arch/i386/kernel/irq.h to here. VY
   9  *
  10  * IRQ/IPI changes taken from work by Thomas Radke
  11  * <tomsoft@informatik.tu-chemnitz.de>
  12  *
  13  * hacked by Andi Kleen for x86-64.
  14  * unified by tglx
  15  */
  16
  17 #include <asm/irq_vectors.h>
  18
  19 #ifndef __ASSEMBLY__
  20
  21 #include <linux/percpu.h>
  22 #include <linux/profile.h>
  23 #include <linux/smp.h>
  24
  25 #include <linux/atomic.h>
  26 #include <asm/irq.h>
  27 #include <asm/sections.h>
  28
  29 /* Interrupt handlers registered during init_IRQ */
  30 extern asmlinkage void apic_timer_interrupt(void);
  31 extern asmlinkage void x86_platform_ipi(void);
  32 extern asmlinkage void kvm_posted_intr_ipi(void);
  33 extern asmlinkage void kvm_posted_intr_wakeup_ipi(void);
  34 extern asmlinkage void kvm_posted_intr_nested_ipi(void);
  35 extern asmlinkage void error_interrupt(void);
  36 extern asmlinkage void irq_work_interrupt(void);
  37 extern asmlinkage void uv_bau_message_intr1(void);
  38
  39 extern asmlinkage void spurious_interrupt(void);
  40 extern asmlinkage void thermal_interrupt(void);
  41 extern asmlinkage void reschedule_interrupt(void);
  42
  43 extern asmlinkage void irq_move_cleanup_interrupt(void);
  44 extern asmlinkage void reboot_interrupt(void);
  45 extern asmlinkage void threshold_interrupt(void);
  46 extern asmlinkage void deferred_error_interrupt(void);
  47
  48 extern asmlinkage void call_function_interrupt(void);
  49 extern asmlinkage void call_function_single_interrupt(void);
  50
  51 #ifdef  CONFIG_X86_LOCAL_APIC
  52 struct irq_data;
  53 struct pci_dev;
  54 struct msi_desc;
  55
  56 enum irq_alloc_type {
  57         X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
  58         X86_IRQ_ALLOC_TYPE_HPET,
  59         X86_IRQ_ALLOC_TYPE_MSI,
  60         X86_IRQ_ALLOC_TYPE_MSIX,
  61         X86_IRQ_ALLOC_TYPE_DMAR,
  62         X86_IRQ_ALLOC_TYPE_UV,
  63 };
  64
  65 struct irq_alloc_info {
  66         enum irq_alloc_type     type;
  67         u32                     flags;
  68         const struct cpumask    *mask;  /* CPU mask for vector allocation */
  69         union {
  70                 int             unused;
  71 #ifdef  CONFIG_HPET_TIMER
  72                 struct {
  73                         int             hpet_id;
  74                         int             hpet_index;
  75                         void            *hpet_data;
  76                 };
  77 #endif
  78 #ifdef  CONFIG_PCI_MSI
  79                 struct {
  80                         struct pci_dev  *msi_dev;
  81                         irq_hw_number_t msi_hwirq;
  82                 };
  83 #endif
  84 #ifdef  CONFIG_X86_IO_APIC
  85                 struct {
  86                         int             ioapic_id;
  87                         int             ioapic_pin;
  88                         int             ioapic_node;
  89                         u32             ioapic_trigger : 1;
  90                         u32             ioapic_polarity : 1;
  91                         u32             ioapic_valid : 1;
  92                         struct IO_APIC_route_entry *ioapic_entry;
  93                 };
  94 #endif
  95 #ifdef  CONFIG_DMAR_TABLE
  96                 struct {
  97                         int             dmar_id;
  98                         void            *dmar_data;
  99                 };
 100 #endif
 101 #ifdef  CONFIG_HT_IRQ
 102                 struct {
 103                         int             ht_pos;
 104                         int             ht_idx;
 105                         struct pci_dev  *ht_dev;
 106                         void            *ht_update;
 107                 };
 108 #endif
 109 #ifdef  CONFIG_X86_UV
 110                 struct {
 111                         int             uv_limit;
 112                         int             uv_blade;
 113                         unsigned long   uv_offset;
 114                         char            *uv_name;
 115                 };
 116 #endif
 117 #if IS_ENABLED(CONFIG_VMD)
 118                 struct {
 119                         struct msi_desc *desc;
 120                 };
 121 #endif
 122         };
 123 };
 124
 125 struct irq_cfg {
 126         unsigned int            dest_apicid;
 127         u8                      vector;
 128         u8                      old_vector;
 129 };
 130
 131 extern struct irq_cfg *irq_cfg(unsigned int irq);
 132 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
 133 extern void lock_vector_lock(void);
 134 extern void unlock_vector_lock(void);
 135 extern void setup_vector_irq(int cpu);
 136 #ifdef CONFIG_SMP
 137 extern void send_cleanup_vector(struct irq_cfg *);
 138 extern void irq_complete_move(struct irq_cfg *cfg);
 139 #else
 140 static inline void send_cleanup_vector(struct irq_cfg *c) { }
 141 static inline void irq_complete_move(struct irq_cfg *c) { }
 142 #endif
 143
 144 extern void apic_ack_edge(struct irq_data *data);
 145 #else   /*  CONFIG_X86_LOCAL_APIC */
 146 static inline void lock_vector_lock(void) {}
 147 static inline void unlock_vector_lock(void) {}
 148 #endif  /* CONFIG_X86_LOCAL_APIC */
 149
 150 /* Statistics */
 151 extern atomic_t irq_err_count;
 152 extern atomic_t irq_mis_count;
 153
 154 extern void elcr_set_level_irq(unsigned int irq);
 155
 156 extern char irq_entries_start[];
 157 #ifdef CONFIG_TRACING
 158 #define trace_irq_entries_start irq_entries_start
 159 #endif
 160
 161 #define VECTOR_UNUSED           NULL
 162 #define VECTOR_RETRIGGERED      ((void *)~0UL)
 163
 164 typedef struct irq_desc* vector_irq_t[NR_VECTORS];
 165 DECLARE_PER_CPU(vector_irq_t, vector_irq);
 166
 167 #endif /* !ASSEMBLY_ */
 168
 169 #endif /* _ASM_X86_HW_IRQ_H */