Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * IRQ subsystem internal functions and variables: | |
dbec07ba TG |
3 | * |
4 | * Do not ever include this file from anything else than | |
5 | * kernel/irq/. Do not even think about using any information outside | |
6 | * of this file for your non core code. | |
1da177e4 | 7 | */ |
e144710b | 8 | #include <linux/irqdesc.h> |
1da177e4 | 9 | |
c1ee6264 TG |
10 | #ifdef CONFIG_SPARSE_IRQ |
11 | # define IRQ_BITMAP_BITS (NR_IRQS + 8196) | |
12 | #else | |
13 | # define IRQ_BITMAP_BITS NR_IRQS | |
14 | #endif | |
15 | ||
e6bea9c4 TG |
16 | #include "settings.h" |
17 | ||
dbec07ba TG |
18 | #define istate core_internal_state__do_not_mess_with_it |
19 | ||
1da177e4 LT |
20 | extern int noirqdebug; |
21 | ||
1535dfac TG |
22 | /* |
23 | * Bits used by threaded handlers: | |
24 | * IRQTF_RUNTHREAD - signals that the interrupt handler thread should run | |
25 | * IRQTF_DIED - handler thread died | |
26 | * IRQTF_WARNED - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed | |
27 | * IRQTF_AFFINITY - irq thread is requested to adjust affinity | |
28 | */ | |
29 | enum { | |
30 | IRQTF_RUNTHREAD, | |
31 | IRQTF_DIED, | |
32 | IRQTF_WARNED, | |
33 | IRQTF_AFFINITY, | |
34 | }; | |
35 | ||
a77c4635 TG |
36 | #define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data) |
37 | ||
6a6de9ef TG |
38 | /* Set default functions for irq_chip structures: */ |
39 | extern void irq_chip_set_defaults(struct irq_chip *chip); | |
40 | ||
41 | /* Set default handler: */ | |
42 | extern void compat_irq_chip_set_default_handler(struct irq_desc *desc); | |
43 | ||
0c5d1eb7 DB |
44 | extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, |
45 | unsigned long flags); | |
0a0c5168 RW |
46 | extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp); |
47 | extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume); | |
0c5d1eb7 | 48 | |
46999238 TG |
49 | extern int irq_startup(struct irq_desc *desc); |
50 | extern void irq_shutdown(struct irq_desc *desc); | |
87923470 TG |
51 | extern void irq_enable(struct irq_desc *desc); |
52 | extern void irq_disable(struct irq_desc *desc); | |
46999238 | 53 | |
85ac16d0 | 54 | extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr); |
0fa0ebbf | 55 | |
4912609f TG |
56 | irqreturn_t handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action); |
57 | irqreturn_t handle_irq_event(struct irq_desc *desc); | |
58 | ||
e144710b TG |
59 | /* Resending of interrupts :*/ |
60 | void check_irq_resend(struct irq_desc *desc, unsigned int irq); | |
fe200ae4 | 61 | bool irq_wait_for_poll(struct irq_desc *desc); |
e144710b | 62 | |
1da177e4 | 63 | #ifdef CONFIG_PROC_FS |
2c6927a3 | 64 | extern void register_irq_proc(unsigned int irq, struct irq_desc *desc); |
13bfe99e | 65 | extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc); |
1da177e4 LT |
66 | extern void register_handler_proc(unsigned int irq, struct irqaction *action); |
67 | extern void unregister_handler_proc(unsigned int irq, struct irqaction *action); | |
68 | #else | |
2c6927a3 | 69 | static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { } |
13bfe99e | 70 | static inline void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) { } |
1da177e4 LT |
71 | static inline void register_handler_proc(unsigned int irq, |
72 | struct irqaction *action) { } | |
73 | static inline void unregister_handler_proc(unsigned int irq, | |
74 | struct irqaction *action) { } | |
75 | #endif | |
76 | ||
3b8249e7 | 77 | extern int irq_select_affinity_usr(unsigned int irq, struct cpumask *mask); |
f6d87f4b | 78 | |
591d2fb0 | 79 | extern void irq_set_thread_affinity(struct irq_desc *desc); |
57b150cc | 80 | |
70aedd24 | 81 | /* Inline functions for support of irq chips on slow busses */ |
3876ec9e | 82 | static inline void chip_bus_lock(struct irq_desc *desc) |
70aedd24 | 83 | { |
3876ec9e TG |
84 | if (unlikely(desc->irq_data.chip->irq_bus_lock)) |
85 | desc->irq_data.chip->irq_bus_lock(&desc->irq_data); | |
70aedd24 TG |
86 | } |
87 | ||
3876ec9e | 88 | static inline void chip_bus_sync_unlock(struct irq_desc *desc) |
70aedd24 | 89 | { |
3876ec9e TG |
90 | if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock)) |
91 | desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data); | |
70aedd24 TG |
92 | } |
93 | ||
43f77759 IM |
94 | /* |
95 | * Debugging printout: | |
96 | */ | |
97 | ||
98 | #include <linux/kallsyms.h> | |
99 | ||
100 | #define P(f) if (desc->status & f) printk("%14s set\n", #f) | |
101 | ||
102 | static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) | |
103 | { | |
104 | printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n", | |
105 | irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled); | |
106 | printk("->handle_irq(): %p, ", desc->handle_irq); | |
107 | print_symbol("%s\n", (unsigned long)desc->handle_irq); | |
6b8ff312 TG |
108 | printk("->irq_data.chip(): %p, ", desc->irq_data.chip); |
109 | print_symbol("%s\n", (unsigned long)desc->irq_data.chip); | |
43f77759 IM |
110 | printk("->action(): %p\n", desc->action); |
111 | if (desc->action) { | |
112 | printk("->action->handler(): %p, ", desc->action->handler); | |
113 | print_symbol("%s\n", (unsigned long)desc->action->handler); | |
114 | } | |
115 | ||
116 | P(IRQ_INPROGRESS); | |
117 | P(IRQ_DISABLED); | |
118 | P(IRQ_PENDING); | |
119 | P(IRQ_REPLAY); | |
120 | P(IRQ_AUTODETECT); | |
121 | P(IRQ_WAITING); | |
122 | P(IRQ_LEVEL); | |
123 | P(IRQ_MASKED); | |
124 | #ifdef CONFIG_IRQ_PER_CPU | |
125 | P(IRQ_PER_CPU); | |
126 | #endif | |
127 | P(IRQ_NOPROBE); | |
128 | P(IRQ_NOREQUEST); | |
129 | P(IRQ_NOAUTOEN); | |
130 | } | |
131 | ||
132 | #undef P | |
133 |