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 /* irq_desc_ptrs allocated at boot time */ 25 extern struct irq_desc **irq_desc_ptrs; 26 #else 27 /* irq_desc_ptrs is a fixed size array */ 28 extern struct irq_desc *irq_desc_ptrs[NR_IRQS]; 29 #endif 30 31 #ifdef CONFIG_PROC_FS 32 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc); 33 extern void register_handler_proc(unsigned int irq, struct irqaction *action); 34 extern void unregister_handler_proc(unsigned int irq, struct irqaction *action); 35 #else 36 static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { } 37 static inline void register_handler_proc(unsigned int irq, 38 struct irqaction *action) { } 39 static inline void unregister_handler_proc(unsigned int irq, 40 struct irqaction *action) { } 41 #endif 42 43 extern int irq_select_affinity_usr(unsigned int irq); 44 45 extern void irq_set_thread_affinity(struct irq_desc *desc); 46 47 /* Inline functions for support of irq chips on slow busses */ 48 static inline void chip_bus_lock(unsigned int irq, struct irq_desc *desc) 49 { 50 if (unlikely(desc->chip->bus_lock)) 51 desc->chip->bus_lock(irq); 52 } 53 54 static inline void chip_bus_sync_unlock(unsigned int irq, struct irq_desc *desc) 55 { 56 if (unlikely(desc->chip->bus_sync_unlock)) 57 desc->chip->bus_sync_unlock(irq); 58 } 59 60 /* 61 * Debugging printout: 62 */ 63 64 #include <linux/kallsyms.h> 65 66 #define P(f) if (desc->status & f) printk("%14s set\n", #f) 67 68 static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) 69 { 70 printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n", 71 irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled); 72 printk("->handle_irq(): %p, ", desc->handle_irq); 73 print_symbol("%s\n", (unsigned long)desc->handle_irq); 74 printk("->chip(): %p, ", desc->chip); 75 print_symbol("%s\n", (unsigned long)desc->chip); 76 printk("->action(): %p\n", desc->action); 77 if (desc->action) { 78 printk("->action->handler(): %p, ", desc->action->handler); 79 print_symbol("%s\n", (unsigned long)desc->action->handler); 80 } 81 82 P(IRQ_INPROGRESS); 83 P(IRQ_DISABLED); 84 P(IRQ_PENDING); 85 P(IRQ_REPLAY); 86 P(IRQ_AUTODETECT); 87 P(IRQ_WAITING); 88 P(IRQ_LEVEL); 89 P(IRQ_MASKED); 90 #ifdef CONFIG_IRQ_PER_CPU 91 P(IRQ_PER_CPU); 92 #endif 93 P(IRQ_NOPROBE); 94 P(IRQ_NOREQUEST); 95 P(IRQ_NOAUTOEN); 96 } 97 98 #undef P 99 100