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 spinlock_t sparse_irq_lock;
  19 extern struct irq_desc *irq_desc_ptrs[NR_IRQS];
  20
  21 #ifdef CONFIG_PROC_FS
  22 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
  23 extern void register_handler_proc(unsigned int irq, struct irqaction *action);
  24 extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
  25 #else
  26 static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
  27 static inline void register_handler_proc(unsigned int irq,
  28                                          struct irqaction *action) { }
  29 static inline void unregister_handler_proc(unsigned int irq,
  30                                            struct irqaction *action) { }
  31 #endif
  32
  33 extern int irq_select_affinity_usr(unsigned int irq);
  34
  35 /*
  36  * Debugging printout:
  37  */
  38
  39 #include <linux/kallsyms.h>
  40
  41 #define P(f) if (desc->status & f) printk("%14s set\n", #f)
  42
  43 static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
  44 {
  45         printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n",
  46                 irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled);
  47         printk("->handle_irq():  %p, ", desc->handle_irq);
  48         print_symbol("%s\n", (unsigned long)desc->handle_irq);
  49         printk("->chip(): %p, ", desc->chip);
  50         print_symbol("%s\n", (unsigned long)desc->chip);
  51         printk("->action(): %p\n", desc->action);
  52         if (desc->action) {
  53                 printk("->action->handler(): %p, ", desc->action->handler);
  54                 print_symbol("%s\n", (unsigned long)desc->action->handler);
  55         }
  56
  57         P(IRQ_INPROGRESS);
  58         P(IRQ_DISABLED);
  59         P(IRQ_PENDING);
  60         P(IRQ_REPLAY);
  61         P(IRQ_AUTODETECT);
  62         P(IRQ_WAITING);
  63         P(IRQ_LEVEL);
  64         P(IRQ_MASKED);
  65 #ifdef CONFIG_IRQ_PER_CPU
  66         P(IRQ_PER_CPU);
  67 #endif
  68         P(IRQ_NOPROBE);
  69         P(IRQ_NOREQUEST);
  70         P(IRQ_NOAUTOEN);
  71 }
  72
  73 #undef P
  74