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 extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp); 16 extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume); 17 18 extern struct lock_class_key irq_desc_lock_class; 19 extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr); 20 extern void clear_kstat_irqs(struct irq_desc *desc); 21 extern raw_spinlock_t sparse_irq_lock; 22 23 #ifdef CONFIG_SPARSE_IRQ 24 void replace_irq_desc(unsigned int irq, struct irq_desc *desc); 25 #endif 26 27 #ifdef CONFIG_PROC_FS 28 extern void register_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 register_handler_proc(unsigned int irq, 34 struct irqaction *action) { } 35 static inline void unregister_handler_proc(unsigned int irq, 36 struct irqaction *action) { } 37 #endif 38 39 extern int irq_select_affinity_usr(unsigned int irq); 40 41 extern void irq_set_thread_affinity(struct irq_desc *desc); 42 43 /* Inline functions for support of irq chips on slow busses */ 44 static inline void chip_bus_lock(unsigned int irq, struct irq_desc *desc) 45 { 46 if (unlikely(desc->chip->bus_lock)) 47 desc->chip->bus_lock(irq); 48 } 49 50 static inline void chip_bus_sync_unlock(unsigned int irq, struct irq_desc *desc) 51 { 52 if (unlikely(desc->chip->bus_sync_unlock)) 53 desc->chip->bus_sync_unlock(irq); 54 } 55 56 /* 57 * Debugging printout: 58 */ 59 60 #include <linux/kallsyms.h> 61 62 #define P(f) if (desc->status & f) printk("%14s set\n", #f) 63 64 static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) 65 { 66 printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n", 67 irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled); 68 printk("->handle_irq(): %p, ", desc->handle_irq); 69 print_symbol("%s\n", (unsigned long)desc->handle_irq); 70 printk("->chip(): %p, ", desc->chip); 71 print_symbol("%s\n", (unsigned long)desc->chip); 72 printk("->action(): %p\n", desc->action); 73 if (desc->action) { 74 printk("->action->handler(): %p, ", desc->action->handler); 75 print_symbol("%s\n", (unsigned long)desc->action->handler); 76 } 77 78 P(IRQ_INPROGRESS); 79 P(IRQ_DISABLED); 80 P(IRQ_PENDING); 81 P(IRQ_REPLAY); 82 P(IRQ_AUTODETECT); 83 P(IRQ_WAITING); 84 P(IRQ_LEVEL); 85 P(IRQ_MASKED); 86 #ifdef CONFIG_IRQ_PER_CPU 87 P(IRQ_PER_CPU); 88 #endif 89 P(IRQ_NOPROBE); 90 P(IRQ_NOREQUEST); 91 P(IRQ_NOAUTOEN); 92 } 93 94 #undef P 95 96