1 /* 2 * IRQ subsystem internal functions and variables: 3 */ 4 #include <linux/irqdesc.h> 5 6 #ifdef CONFIG_SPARSE_IRQ 7 # define IRQ_BITMAP_BITS (NR_IRQS + 8196) 8 #else 9 # define IRQ_BITMAP_BITS NR_IRQS 10 #endif 11 12 extern int noirqdebug; 13 14 #define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data) 15 16 /* Set default functions for irq_chip structures: */ 17 extern void irq_chip_set_defaults(struct irq_chip *chip); 18 19 /* Set default handler: */ 20 extern void compat_irq_chip_set_default_handler(struct irq_desc *desc); 21 22 extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, 23 unsigned long flags); 24 extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp); 25 extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume); 26 27 extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr); 28 29 /* Resending of interrupts :*/ 30 void check_irq_resend(struct irq_desc *desc, unsigned int irq); 31 32 #ifdef CONFIG_PROC_FS 33 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc); 34 extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc); 35 extern void register_handler_proc(unsigned int irq, struct irqaction *action); 36 extern void unregister_handler_proc(unsigned int irq, struct irqaction *action); 37 #else 38 static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { } 39 static inline void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) { } 40 static inline void register_handler_proc(unsigned int irq, 41 struct irqaction *action) { } 42 static inline void unregister_handler_proc(unsigned int irq, 43 struct irqaction *action) { } 44 #endif 45 46 extern int irq_select_affinity_usr(unsigned int irq); 47 48 extern void irq_set_thread_affinity(struct irq_desc *desc); 49 50 #ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED 51 static inline void irq_end(unsigned int irq, struct irq_desc *desc) 52 { 53 if (desc->irq_data.chip && desc->irq_data.chip->end) 54 desc->irq_data.chip->end(irq); 55 } 56 #else 57 static inline void irq_end(unsigned int irq, struct irq_desc *desc) { } 58 #endif 59 60 /* Inline functions for support of irq chips on slow busses */ 61 static inline void chip_bus_lock(struct irq_desc *desc) 62 { 63 if (unlikely(desc->irq_data.chip->irq_bus_lock)) 64 desc->irq_data.chip->irq_bus_lock(&desc->irq_data); 65 } 66 67 static inline void chip_bus_sync_unlock(struct irq_desc *desc) 68 { 69 if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock)) 70 desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data); 71 } 72 73 /* 74 * Debugging printout: 75 */ 76 77 #include <linux/kallsyms.h> 78 79 #define P(f) if (desc->status & f) printk("%14s set\n", #f) 80 81 static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) 82 { 83 printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n", 84 irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled); 85 printk("->handle_irq(): %p, ", desc->handle_irq); 86 print_symbol("%s\n", (unsigned long)desc->handle_irq); 87 printk("->irq_data.chip(): %p, ", desc->irq_data.chip); 88 print_symbol("%s\n", (unsigned long)desc->irq_data.chip); 89 printk("->action(): %p\n", desc->action); 90 if (desc->action) { 91 printk("->action->handler(): %p, ", desc->action->handler); 92 print_symbol("%s\n", (unsigned long)desc->action->handler); 93 } 94 95 P(IRQ_INPROGRESS); 96 P(IRQ_DISABLED); 97 P(IRQ_PENDING); 98 P(IRQ_REPLAY); 99 P(IRQ_AUTODETECT); 100 P(IRQ_WAITING); 101 P(IRQ_LEVEL); 102 P(IRQ_MASKED); 103 #ifdef CONFIG_IRQ_PER_CPU 104 P(IRQ_PER_CPU); 105 #endif 106 P(IRQ_NOPROBE); 107 P(IRQ_NOREQUEST); 108 P(IRQ_NOAUTOEN); 109 } 110 111 #undef P 112 113