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
  20 #ifdef CONFIG_SPARSE_IRQ
  21 /* irq_desc_ptrs allocated at boot time */
  22 extern struct irq_desc **irq_desc_ptrs;
  23 #else
  24 /* irq_desc_ptrs is a fixed size array */
  25 extern struct irq_desc *irq_desc_ptrs[NR_IRQS];
  26 #endif
  27
  28 #ifdef CONFIG_PROC_FS
  29 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
  30 extern void register_handler_proc(unsigned int irq, struct irqaction *action);
  31 extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
  32 #else
  33 static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
  34 static inline void register_handler_proc(unsigned int irq,
  35                                          struct irqaction *action) { }
  36 static inline void unregister_handler_proc(unsigned int irq,
  37                                            struct irqaction *action) { }
  38 #endif
  39
  40 extern int irq_select_affinity_usr(unsigned int irq);
  41
  42 /*
  43  * Debugging printout:
  44  */
  45
  46 #include <linux/kallsyms.h>
  47
  48 #define P(f) if (desc->status & f) printk("%14s set\n", #f)
  49
  50 static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
  51 {
  52         printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n",
  53                 irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled);
  54         printk("->handle_irq():  %p, ", desc->handle_irq);
  55         print_symbol("%s\n", (unsigned long)desc->handle_irq);
  56         printk("->chip(): %p, ", desc->chip);
  57         print_symbol("%s\n", (unsigned long)desc->chip);
  58         printk("->action(): %p\n", desc->action);
  59         if (desc->action) {
  60                 printk("->action->handler(): %p, ", desc->action->handler);
  61                 print_symbol("%s\n", (unsigned long)desc->action->handler);
  62         }
  63
  64         P(IRQ_INPROGRESS);
  65         P(IRQ_DISABLED);
  66         P(IRQ_PENDING);
  67         P(IRQ_REPLAY);
  68         P(IRQ_AUTODETECT);
  69         P(IRQ_WAITING);
  70         P(IRQ_LEVEL);
  71         P(IRQ_MASKED);
  72 #ifdef CONFIG_IRQ_PER_CPU
  73         P(IRQ_PER_CPU);
  74 #endif
  75         P(IRQ_NOPROBE);
  76         P(IRQ_NOREQUEST);
  77         P(IRQ_NOAUTOEN);
  78 }
  79
  80 #undef P
  81