2 * IRQ subsystem internal functions and variables:
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.
8 #include <linux/irqdesc.h>
10 #ifdef CONFIG_SPARSE_IRQ
11 # define IRQ_BITMAP_BITS (NR_IRQS + 8196)
13 # define IRQ_BITMAP_BITS NR_IRQS
16 #define istate core_internal_state__do_not_mess_with_it
18 extern bool noirqdebug
;
21 * Bits used by threaded handlers:
22 * IRQTF_RUNTHREAD - signals that the interrupt handler thread should run
23 * IRQTF_WARNED - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed
24 * IRQTF_AFFINITY - irq thread is requested to adjust affinity
25 * IRQTF_FORCED_THREAD - irq action is force threaded
35 * Bit masks for desc->state
37 * IRQS_AUTODETECT - autodetection in progress
38 * IRQS_SPURIOUS_DISABLED - was disabled due to spurious interrupt
40 * IRQS_POLL_INPROGRESS - polling in progress
41 * IRQS_ONESHOT - irq is not unmasked in primary handler
42 * IRQS_REPLAY - irq is replayed
43 * IRQS_WAITING - irq is waiting
44 * IRQS_PENDING - irq is pending and replayed later
45 * IRQS_SUSPENDED - irq is suspended
48 IRQS_AUTODETECT
= 0x00000001,
49 IRQS_SPURIOUS_DISABLED
= 0x00000002,
50 IRQS_POLL_INPROGRESS
= 0x00000008,
51 IRQS_ONESHOT
= 0x00000020,
52 IRQS_REPLAY
= 0x00000040,
53 IRQS_WAITING
= 0x00000080,
54 IRQS_PENDING
= 0x00000200,
55 IRQS_SUSPENDED
= 0x00000800,
61 #define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data)
63 extern int __irq_set_trigger(struct irq_desc
*desc
, unsigned int irq
,
65 extern void __disable_irq(struct irq_desc
*desc
, unsigned int irq
, bool susp
);
66 extern void __enable_irq(struct irq_desc
*desc
, unsigned int irq
, bool resume
);
68 extern int irq_startup(struct irq_desc
*desc
, bool resend
);
69 extern void irq_shutdown(struct irq_desc
*desc
);
70 extern void irq_enable(struct irq_desc
*desc
);
71 extern void irq_disable(struct irq_desc
*desc
);
72 extern void irq_percpu_enable(struct irq_desc
*desc
, unsigned int cpu
);
73 extern void irq_percpu_disable(struct irq_desc
*desc
, unsigned int cpu
);
74 extern void mask_irq(struct irq_desc
*desc
);
75 extern void unmask_irq(struct irq_desc
*desc
);
77 extern void init_kstat_irqs(struct irq_desc
*desc
, int node
, int nr
);
79 irqreturn_t
handle_irq_event_percpu(struct irq_desc
*desc
, struct irqaction
*action
);
80 irqreturn_t
handle_irq_event(struct irq_desc
*desc
);
82 /* Resending of interrupts :*/
83 void check_irq_resend(struct irq_desc
*desc
, unsigned int irq
);
84 bool irq_wait_for_poll(struct irq_desc
*desc
);
87 extern void register_irq_proc(unsigned int irq
, struct irq_desc
*desc
);
88 extern void unregister_irq_proc(unsigned int irq
, struct irq_desc
*desc
);
89 extern void register_handler_proc(unsigned int irq
, struct irqaction
*action
);
90 extern void unregister_handler_proc(unsigned int irq
, struct irqaction
*action
);
92 static inline void register_irq_proc(unsigned int irq
, struct irq_desc
*desc
) { }
93 static inline void unregister_irq_proc(unsigned int irq
, struct irq_desc
*desc
) { }
94 static inline void register_handler_proc(unsigned int irq
,
95 struct irqaction
*action
) { }
96 static inline void unregister_handler_proc(unsigned int irq
,
97 struct irqaction
*action
) { }
100 extern int irq_select_affinity_usr(unsigned int irq
, struct cpumask
*mask
);
102 extern void irq_set_thread_affinity(struct irq_desc
*desc
);
104 extern int irq_do_set_affinity(struct irq_data
*data
,
105 const struct cpumask
*dest
, bool force
);
107 /* Inline functions for support of irq chips on slow busses */
108 static inline void chip_bus_lock(struct irq_desc
*desc
)
110 if (unlikely(desc
->irq_data
.chip
->irq_bus_lock
))
111 desc
->irq_data
.chip
->irq_bus_lock(&desc
->irq_data
);
114 static inline void chip_bus_sync_unlock(struct irq_desc
*desc
)
116 if (unlikely(desc
->irq_data
.chip
->irq_bus_sync_unlock
))
117 desc
->irq_data
.chip
->irq_bus_sync_unlock(&desc
->irq_data
);
120 #define _IRQ_DESC_CHECK (1 << 0)
121 #define _IRQ_DESC_PERCPU (1 << 1)
123 #define IRQ_GET_DESC_CHECK_GLOBAL (_IRQ_DESC_CHECK)
124 #define IRQ_GET_DESC_CHECK_PERCPU (_IRQ_DESC_CHECK | _IRQ_DESC_PERCPU)
127 __irq_get_desc_lock(unsigned int irq
, unsigned long *flags
, bool bus
,
129 void __irq_put_desc_unlock(struct irq_desc
*desc
, unsigned long flags
, bool bus
);
131 static inline struct irq_desc
*
132 irq_get_desc_buslock(unsigned int irq
, unsigned long *flags
, unsigned int check
)
134 return __irq_get_desc_lock(irq
, flags
, true, check
);
138 irq_put_desc_busunlock(struct irq_desc
*desc
, unsigned long flags
)
140 __irq_put_desc_unlock(desc
, flags
, true);
143 static inline struct irq_desc
*
144 irq_get_desc_lock(unsigned int irq
, unsigned long *flags
, unsigned int check
)
146 return __irq_get_desc_lock(irq
, flags
, false, check
);
150 irq_put_desc_unlock(struct irq_desc
*desc
, unsigned long flags
)
152 __irq_put_desc_unlock(desc
, flags
, false);
156 * Manipulation functions for irq_data.state
158 static inline void irqd_set_move_pending(struct irq_data
*d
)
160 d
->state_use_accessors
|= IRQD_SETAFFINITY_PENDING
;
163 static inline void irqd_clr_move_pending(struct irq_data
*d
)
165 d
->state_use_accessors
&= ~IRQD_SETAFFINITY_PENDING
;
168 static inline void irqd_clear(struct irq_data
*d
, unsigned int mask
)
170 d
->state_use_accessors
&= ~mask
;
173 static inline void irqd_set(struct irq_data
*d
, unsigned int mask
)
175 d
->state_use_accessors
|= mask
;
178 static inline bool irqd_has_set(struct irq_data
*d
, unsigned int mask
)
180 return d
->state_use_accessors
& mask
;
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