genirq: Convert irq_desc.lock to raw_spinlock
[linux-3.10.git] / kernel / irq / internals.h
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