kernel/irq/internals.h

   1 /*
   2  * IRQ subsystem internal functions and variables:
   3  */
   4
   5 extern int noirqdebug;
   6
   7 /* Set default functions for irq_chip structures: */
   8 extern void irq_chip_set_defaults(struct irq_chip *chip);
   9
  10 /* Set default handler: */
  11 extern void compat_irq_chip_set_default_handler(struct irq_desc *desc);
  12
  13 extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
  14                 unsigned long flags);
  15
  16 extern struct lock_class_key irq_desc_lock_class;
  17 extern void init_kstat_irqs(struct irq_desc *desc, int cpu, int nr);
  18 extern void clear_kstat_irqs(struct irq_desc *desc);
  19 extern spinlock_t sparse_irq_lock;
  20
  21 #ifdef CONFIG_SPARSE_IRQ
  22 /* irq_desc_ptrs allocated at boot time */
  23 extern struct irq_desc **irq_desc_ptrs;
  24 #else
  25 /* irq_desc_ptrs is a fixed size array */
  26 extern struct irq_desc *irq_desc_ptrs[NR_IRQS];
  27 #endif
  28
  29 extern int redirect_hardirq(struct irq_desc *desc);
  30
  31 void recalculate_desc_flags(struct irq_desc *desc);
  32
  33 #ifdef CONFIG_PROC_FS
  34 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
  35 extern void register_handler_proc(unsigned int irq, struct irqaction *action);
  36 extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
  37 #else
  38 static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
  39 static inline void register_handler_proc(unsigned int irq,
  40                                          struct irqaction *action) { }
  41 static inline void unregister_handler_proc(unsigned int irq,
  42                                            struct irqaction *action) { }
  43 #endif
  44
  45 extern int irq_select_affinity_usr(unsigned int irq);
  46
  47 /*
  48  * Debugging printout:
  49  */
  50
  51 #include <linux/kallsyms.h>
  52
  53 #define P(f) if (desc->status & f) printk("%14s set\n", #f)
  54
  55 static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
  56 {
  57         printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n",
  58                 irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled);
  59         printk("->handle_irq():  %p, ", desc->handle_irq);
  60         print_symbol("%s\n", (unsigned long)desc->handle_irq);
  61         printk("->chip(): %p, ", desc->chip);
  62         print_symbol("%s\n", (unsigned long)desc->chip);
  63         printk("->action(): %p\n", desc->action);
  64         if (desc->action) {
  65                 printk("->action->handler(): %p, ", desc->action->handler);
  66                 print_symbol("%s\n", (unsigned long)desc->action->handler);
  67         }
  68
  69         P(IRQ_INPROGRESS);
  70         P(IRQ_DISABLED);
  71         P(IRQ_PENDING);
  72         P(IRQ_REPLAY);
  73         P(IRQ_AUTODETECT);
  74         P(IRQ_WAITING);
  75         P(IRQ_LEVEL);
  76         P(IRQ_MASKED);
  77 #ifdef CONFIG_IRQ_PER_CPU
  78         P(IRQ_PER_CPU);
  79 #endif
  80         P(IRQ_NOPROBE);
  81         P(IRQ_NOREQUEST);
  82         P(IRQ_NOAUTOEN);
  83 }
  84
  85 #undef P
  86