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 error_interrupt(void);
  34 extern asmlinkage void irq_work_interrupt(void);
  35
  36 extern asmlinkage void spurious_interrupt(void);
  37 extern asmlinkage void thermal_interrupt(void);
  38 extern asmlinkage void reschedule_interrupt(void);
  39
  40 extern asmlinkage void irq_move_cleanup_interrupt(void);
  41 extern asmlinkage void reboot_interrupt(void);
  42 extern asmlinkage void threshold_interrupt(void);
  43 extern asmlinkage void deferred_error_interrupt(void);
  44
  45 extern asmlinkage void call_function_interrupt(void);
  46 extern asmlinkage void call_function_single_interrupt(void);
  47
  48 #ifdef CONFIG_TRACING
  49 /* Interrupt handlers registered during init_IRQ */
  50 extern void trace_apic_timer_interrupt(void);
  51 extern void trace_x86_platform_ipi(void);
  52 extern void trace_error_interrupt(void);
  53 extern void trace_irq_work_interrupt(void);
  54 extern void trace_spurious_interrupt(void);
  55 extern void trace_thermal_interrupt(void);
  56 extern void trace_reschedule_interrupt(void);
  57 extern void trace_threshold_interrupt(void);
  58 extern void trace_deferred_error_interrupt(void);
  59 extern void trace_call_function_interrupt(void);
  60 extern 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
  68 struct irq_data;
  69 struct pci_dev;
  70 struct msi_desc;
  71
  72 enum 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
  81 struct 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
 136 struct irq_cfg {
 137         unsigned int            dest_apicid;
 138         u8                      vector;
 139 };
 140
 141 extern struct irq_cfg *irq_cfg(unsigned int irq);
 142 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
 143 extern void lock_vector_lock(void);
 144 extern void unlock_vector_lock(void);
 145 extern void setup_vector_irq(int cpu);
 146 #ifdef CONFIG_SMP
 147 extern void send_cleanup_vector(struct irq_cfg *);
 148 extern void irq_complete_move(struct irq_cfg *cfg);
 149 #else
 150 static inline void send_cleanup_vector(struct irq_cfg *c) { }
 151 static inline void irq_complete_move(struct irq_cfg *c) { }
 152 #endif
 153
 154 extern void apic_ack_edge(struct irq_data *data);
 155 #else   /*  CONFIG_X86_LOCAL_APIC */
 156 static inline void lock_vector_lock(void) {}
 157 static inline void unlock_vector_lock(void) {}
 158 #endif  /* CONFIG_X86_LOCAL_APIC */
 159
 160 /* Statistics */
 161 extern atomic_t irq_err_count;
 162 extern atomic_t irq_mis_count;
 163
 164 extern void elcr_set_level_irq(unsigned int irq);
 165
 166 /* SMP */
 167 extern __visible void smp_apic_timer_interrupt(struct pt_regs *);
 168 extern __visible void smp_spurious_interrupt(struct pt_regs *);
 169 extern __visible void smp_x86_platform_ipi(struct pt_regs *);
 170 extern __visible void smp_error_interrupt(struct pt_regs *);
 171 #ifdef CONFIG_X86_IO_APIC
 172 extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
 173 #endif
 174 #ifdef CONFIG_SMP
 175 extern __visible void smp_reschedule_interrupt(struct pt_regs *);
 176 extern __visible void smp_call_function_interrupt(struct pt_regs *);
 177 extern __visible void smp_call_function_single_interrupt(struct pt_regs *);
 178 #endif
 179
 180 extern char irq_entries_start[];
 181 #ifdef CONFIG_TRACING
 182 #define trace_irq_entries_start irq_entries_start
 183 #endif
 184
 185 #define VECTOR_UNDEFINED        (-1)
 186 #define VECTOR_RETRIGGERED      (-2)
 187
 188 typedef int vector_irq_t[NR_VECTORS];
 189 DECLARE_PER_CPU(vector_irq_t, vector_irq);
 190
 191 #endif /* !ASSEMBLY_ */
 192
 193 #endif /* _ASM_X86_HW_IRQ_H */