Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.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 void replace_irq_desc(unsigned int irq, struct irq_desc *desc);
25 #endif
26
27 #ifdef CONFIG_PROC_FS
28 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
29 extern void register_handler_proc(unsigned int irq, struct irqaction *action);
30 extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
31 #else
32 static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
33 static inline void register_handler_proc(unsigned int irq,
34                                          struct irqaction *action) { }
35 static inline void unregister_handler_proc(unsigned int irq,
36                                            struct irqaction *action) { }
37 #endif
38
39 extern int irq_select_affinity_usr(unsigned int irq);
40
41 extern void irq_set_thread_affinity(struct irq_desc *desc);
42
43 /* Inline functions for support of irq chips on slow busses */
44 static 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
50 static 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
64 static 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