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   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 #ifdef CONFIG_PROC_FS
  30 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
  31 extern void register_handler_proc(unsigned int irq, struct irqaction *action);
  32 extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
  33 #else
  34 static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
  35 static inline void register_handler_proc(unsigned int irq,
  36                                          struct irqaction *action) { }
  37 static inline void unregister_handler_proc(unsigned int irq,
  38                                            struct irqaction *action) { }
  39 #endif
  40
  41 extern int irq_select_affinity_usr(unsigned int irq);
  42
  43 /*
  44  * Debugging printout:
  45  */
  46
  47 #include <linux/kallsyms.h>
  48
  49 #define P(f) if (desc->status & f) printk("%14s set\n", #f)
  50
  51 static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
  52 {
  53         printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n",
  54                 irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled);
  55         printk("->handle_irq():  %p, ", desc->handle_irq);
  56         print_symbol("%s\n", (unsigned long)desc->handle_irq);
  57         printk("->chip(): %p, ", desc->chip);
  58         print_symbol("%s\n", (unsigned long)desc->chip);
  59         printk("->action(): %p\n", desc->action);
  60         if (desc->action) {
  61                 printk("->action->handler(): %p, ", desc->action->handler);
  62                 print_symbol("%s\n", (unsigned long)desc->action->handler);
  63         }
  64
  65         P(IRQ_INPROGRESS);
  66         P(IRQ_DISABLED);
  67         P(IRQ_PENDING);
  68         P(IRQ_REPLAY);
  69         P(IRQ_AUTODETECT);
  70         P(IRQ_WAITING);
  71         P(IRQ_LEVEL);
  72         P(IRQ_MASKED);
  73 #ifdef CONFIG_IRQ_PER_CPU
  74         P(IRQ_PER_CPU);
  75 #endif
  76         P(IRQ_NOPROBE);
  77         P(IRQ_NOREQUEST);
  78         P(IRQ_NOAUTOEN);
  79 }
  80
  81 #undef P
  82