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