1/* 2 * IRQ subsystem internal functions and variables: 3 */ 4 5extern int noirqdebug; 6 7/* Set default functions for irq_chip structures: */ 8extern void irq_chip_set_defaults(struct irq_chip *chip); 9 10/* Set default handler: */ 11extern void compat_irq_chip_set_default_handler(struct irq_desc *desc); 12 13extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, 14 unsigned long flags); 15extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp); 16extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume); 17 18extern struct lock_class_key irq_desc_lock_class; 19extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr); 20extern void clear_kstat_irqs(struct irq_desc *desc); 21extern raw_spinlock_t sparse_irq_lock; 22 23#ifdef CONFIG_SPARSE_IRQ 24void replace_irq_desc(unsigned int irq, struct irq_desc *desc); 25#endif 26 27#ifdef CONFIG_PROC_FS 28extern void register_irq_proc(unsigned int irq, struct irq_desc *desc); 29extern void register_handler_proc(unsigned int irq, struct irqaction *action); 30extern void unregister_handler_proc(unsigned int irq, struct irqaction *action); 31#else 32static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { } 33static inline void register_handler_proc(unsigned int irq, 34 struct irqaction *action) { } 35static inline void unregister_handler_proc(unsigned int irq, 36 struct irqaction *action) { } 37#endif 38 39extern int irq_select_affinity_usr(unsigned int irq); 40 41extern void irq_set_thread_affinity(struct irq_desc *desc); 42 43/* Inline functions for support of irq chips on slow busses */ 44static 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 50static 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 64static 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