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[net-next-2.6.git] / kernel / irq / internals.h
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1da177e4
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1/*
2 * IRQ subsystem internal functions and variables:
3 */
e144710b 4#include <linux/irqdesc.h>
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5
6extern int noirqdebug;
7
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8#define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data)
9
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10/* Set default functions for irq_chip structures: */
11extern void irq_chip_set_defaults(struct irq_chip *chip);
12
13/* Set default handler: */
14extern void compat_irq_chip_set_default_handler(struct irq_desc *desc);
15
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16extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
17 unsigned long flags);
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18extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp);
19extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume);
0c5d1eb7 20
85ac16d0 21extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
0fa0ebbf 22
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23/* Resending of interrupts :*/
24void check_irq_resend(struct irq_desc *desc, unsigned int irq);
25
1da177e4 26#ifdef CONFIG_PROC_FS
2c6927a3 27extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
13bfe99e 28extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc);
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29extern void register_handler_proc(unsigned int irq, struct irqaction *action);
30extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
31#else
2c6927a3 32static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
13bfe99e 33static inline void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) { }
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34static inline void register_handler_proc(unsigned int irq,
35 struct irqaction *action) { }
36static inline void unregister_handler_proc(unsigned int irq,
37 struct irqaction *action) { }
38#endif
39
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40extern int irq_select_affinity_usr(unsigned int irq);
41
591d2fb0 42extern void irq_set_thread_affinity(struct irq_desc *desc);
57b150cc 43
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44#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
45static inline void irq_end(unsigned int irq, struct irq_desc *desc)
46{
47 if (desc->irq_data.chip && desc->irq_data.chip->end)
48 desc->irq_data.chip->end(irq);
49}
50#else
51static inline void irq_end(unsigned int irq, struct irq_desc *desc) { }
52#endif
53
70aedd24 54/* Inline functions for support of irq chips on slow busses */
3876ec9e 55static inline void chip_bus_lock(struct irq_desc *desc)
70aedd24 56{
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57 if (unlikely(desc->irq_data.chip->irq_bus_lock))
58 desc->irq_data.chip->irq_bus_lock(&desc->irq_data);
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59}
60
3876ec9e 61static inline void chip_bus_sync_unlock(struct irq_desc *desc)
70aedd24 62{
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63 if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock))
64 desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data);
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65}
66
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67/*
68 * Debugging printout:
69 */
70
71#include <linux/kallsyms.h>
72
73#define P(f) if (desc->status & f) printk("%14s set\n", #f)
74
75static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
76{
77 printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n",
78 irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled);
79 printk("->handle_irq(): %p, ", desc->handle_irq);
80 print_symbol("%s\n", (unsigned long)desc->handle_irq);
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81 printk("->irq_data.chip(): %p, ", desc->irq_data.chip);
82 print_symbol("%s\n", (unsigned long)desc->irq_data.chip);
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83 printk("->action(): %p\n", desc->action);
84 if (desc->action) {
85 printk("->action->handler(): %p, ", desc->action->handler);
86 print_symbol("%s\n", (unsigned long)desc->action->handler);
87 }
88
89 P(IRQ_INPROGRESS);
90 P(IRQ_DISABLED);
91 P(IRQ_PENDING);
92 P(IRQ_REPLAY);
93 P(IRQ_AUTODETECT);
94 P(IRQ_WAITING);
95 P(IRQ_LEVEL);
96 P(IRQ_MASKED);
97#ifdef CONFIG_IRQ_PER_CPU
98 P(IRQ_PER_CPU);
99#endif
100 P(IRQ_NOPROBE);
101 P(IRQ_NOREQUEST);
102 P(IRQ_NOAUTOEN);
103}
104
105#undef P
106