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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * IRQ subsystem internal functions and variables: | |
3 | */ | |
e144710b | 4 | #include <linux/irqdesc.h> |
1da177e4 | 5 | |
c1ee6264 TG |
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 | ||
1da177e4 LT |
12 | extern int noirqdebug; |
13 | ||
1535dfac TG |
14 | /* |
15 | * Bits used by threaded handlers: | |
16 | * IRQTF_RUNTHREAD - signals that the interrupt handler thread should run | |
17 | * IRQTF_DIED - handler thread died | |
18 | * IRQTF_WARNED - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed | |
19 | * IRQTF_AFFINITY - irq thread is requested to adjust affinity | |
20 | */ | |
21 | enum { | |
22 | IRQTF_RUNTHREAD, | |
23 | IRQTF_DIED, | |
24 | IRQTF_WARNED, | |
25 | IRQTF_AFFINITY, | |
26 | }; | |
27 | ||
a77c4635 TG |
28 | #define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data) |
29 | ||
6a6de9ef TG |
30 | /* Set default functions for irq_chip structures: */ |
31 | extern void irq_chip_set_defaults(struct irq_chip *chip); | |
32 | ||
33 | /* Set default handler: */ | |
34 | extern void compat_irq_chip_set_default_handler(struct irq_desc *desc); | |
35 | ||
0c5d1eb7 DB |
36 | extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, |
37 | unsigned long flags); | |
0a0c5168 RW |
38 | extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp); |
39 | extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume); | |
0c5d1eb7 | 40 | |
85ac16d0 | 41 | extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr); |
0fa0ebbf | 42 | |
e144710b TG |
43 | /* Resending of interrupts :*/ |
44 | void check_irq_resend(struct irq_desc *desc, unsigned int irq); | |
fe200ae4 | 45 | bool irq_wait_for_poll(struct irq_desc *desc); |
e144710b | 46 | |
1da177e4 | 47 | #ifdef CONFIG_PROC_FS |
2c6927a3 | 48 | extern void register_irq_proc(unsigned int irq, struct irq_desc *desc); |
13bfe99e | 49 | extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc); |
1da177e4 LT |
50 | extern void register_handler_proc(unsigned int irq, struct irqaction *action); |
51 | extern void unregister_handler_proc(unsigned int irq, struct irqaction *action); | |
52 | #else | |
2c6927a3 | 53 | static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { } |
13bfe99e | 54 | static inline void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) { } |
1da177e4 LT |
55 | static inline void register_handler_proc(unsigned int irq, |
56 | struct irqaction *action) { } | |
57 | static inline void unregister_handler_proc(unsigned int irq, | |
58 | struct irqaction *action) { } | |
59 | #endif | |
60 | ||
3b8249e7 | 61 | extern int irq_select_affinity_usr(unsigned int irq, struct cpumask *mask); |
f6d87f4b | 62 | |
591d2fb0 | 63 | extern void irq_set_thread_affinity(struct irq_desc *desc); |
57b150cc | 64 | |
70aedd24 | 65 | /* Inline functions for support of irq chips on slow busses */ |
3876ec9e | 66 | static inline void chip_bus_lock(struct irq_desc *desc) |
70aedd24 | 67 | { |
3876ec9e TG |
68 | if (unlikely(desc->irq_data.chip->irq_bus_lock)) |
69 | desc->irq_data.chip->irq_bus_lock(&desc->irq_data); | |
70aedd24 TG |
70 | } |
71 | ||
3876ec9e | 72 | static inline void chip_bus_sync_unlock(struct irq_desc *desc) |
70aedd24 | 73 | { |
3876ec9e TG |
74 | if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock)) |
75 | desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data); | |
70aedd24 TG |
76 | } |
77 | ||
43f77759 IM |
78 | /* |
79 | * Debugging printout: | |
80 | */ | |
81 | ||
82 | #include <linux/kallsyms.h> | |
83 | ||
84 | #define P(f) if (desc->status & f) printk("%14s set\n", #f) | |
85 | ||
86 | static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) | |
87 | { | |
88 | printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n", | |
89 | irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled); | |
90 | printk("->handle_irq(): %p, ", desc->handle_irq); | |
91 | print_symbol("%s\n", (unsigned long)desc->handle_irq); | |
6b8ff312 TG |
92 | printk("->irq_data.chip(): %p, ", desc->irq_data.chip); |
93 | print_symbol("%s\n", (unsigned long)desc->irq_data.chip); | |
43f77759 IM |
94 | printk("->action(): %p\n", desc->action); |
95 | if (desc->action) { | |
96 | printk("->action->handler(): %p, ", desc->action->handler); | |
97 | print_symbol("%s\n", (unsigned long)desc->action->handler); | |
98 | } | |
99 | ||
100 | P(IRQ_INPROGRESS); | |
101 | P(IRQ_DISABLED); | |
102 | P(IRQ_PENDING); | |
103 | P(IRQ_REPLAY); | |
104 | P(IRQ_AUTODETECT); | |
105 | P(IRQ_WAITING); | |
106 | P(IRQ_LEVEL); | |
107 | P(IRQ_MASKED); | |
108 | #ifdef CONFIG_IRQ_PER_CPU | |
109 | P(IRQ_PER_CPU); | |
110 | #endif | |
111 | P(IRQ_NOPROBE); | |
112 | P(IRQ_NOREQUEST); | |
113 | P(IRQ_NOAUTOEN); | |
114 | } | |
115 | ||
116 | #undef P | |
117 |