kernel/irq/internals.h

   1 /*
   2  * IRQ subsystem internal functions and variables:
   3  */
   4 #include <linux/irqdesc.h>
   5
   6 extern int noirqdebug;
   7
   8 #define irq_data_to_desc(data)  container_of(data, struct irq_desc, irq_data)
   9
  10 /* Set default functions for irq_chip structures: */
  11 extern void irq_chip_set_defaults(struct irq_chip *chip);
  12
  13 /* Set default handler: */
  14 extern void compat_irq_chip_set_default_handler(struct irq_desc *desc);
  15
  16 extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
  17                 unsigned long flags);
  18 extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp);
  19 extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume);
  20
  21 extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
  22
  23 /* Resending of interrupts :*/
  24 void check_irq_resend(struct irq_desc *desc, unsigned int irq);
  25
  26 #ifdef CONFIG_PROC_FS
  27 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
  28 extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc);
  29 extern void register_handler_proc(unsigned int irq, struct irqaction *action);
  30 extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
  31 #else
  32 static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
  33 static inline void unregister_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 extern void irq_set_thread_affinity(struct irq_desc *desc);
  43
  44 #ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
  45 static inline void irq_end(unsigned int irq, struct irq_desc *desc)
  46 {
  47         if (desc->irq_data.chip && desc->irq_data.chip->end)
  48                 desc->irq_data.chip->end(irq);
  49 }
  50 #else
  51 static inline void irq_end(unsigned int irq, struct irq_desc *desc) { }
  52 #endif
  53
  54 /* Inline functions for support of irq chips on slow busses */
  55 static inline void chip_bus_lock(struct irq_desc *desc)
  56 {
  57         if (unlikely(desc->irq_data.chip->irq_bus_lock))
  58                 desc->irq_data.chip->irq_bus_lock(&desc->irq_data);
  59 }
  60
  61 static inline void chip_bus_sync_unlock(struct irq_desc *desc)
  62 {
  63         if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock))
  64                 desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data);
  65 }
  66
  67 /*
  68  * Debugging printout:
  69  */
  70
  71 #include <linux/kallsyms.h>
  72
  73 #define P(f) if (desc->status & f) printk("%14s set\n", #f)
  74
  75 static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
  76 {
  77         printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n",
  78                 irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled);
  79         printk("->handle_irq():  %p, ", desc->handle_irq);
  80         print_symbol("%s\n", (unsigned long)desc->handle_irq);
  81         printk("->irq_data.chip(): %p, ", desc->irq_data.chip);
  82         print_symbol("%s\n", (unsigned long)desc->irq_data.chip);
  83         printk("->action(): %p\n", desc->action);
  84         if (desc->action) {
  85                 printk("->action->handler(): %p, ", desc->action->handler);
  86                 print_symbol("%s\n", (unsigned long)desc->action->handler);
  87         }
  88
  89         P(IRQ_INPROGRESS);
  90         P(IRQ_DISABLED);
  91         P(IRQ_PENDING);
  92         P(IRQ_REPLAY);
  93         P(IRQ_AUTODETECT);
  94         P(IRQ_WAITING);
  95         P(IRQ_LEVEL);
  96         P(IRQ_MASKED);
  97 #ifdef CONFIG_IRQ_PER_CPU
  98         P(IRQ_PER_CPU);
  99 #endif
 100         P(IRQ_NOPROBE);
 101         P(IRQ_NOREQUEST);
 102         P(IRQ_NOAUTOEN);
 103 }
 104
 105 #undef P
 106