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 #ifdef CONFIG_GENERIC_HARDIRQS_NO_COMPAT
19 # define status status_use_accessors
22 extern int noirqdebug;
25 * Bits used by threaded handlers:
26 * IRQTF_RUNTHREAD - signals that the interrupt handler thread should run
27 * IRQTF_DIED - handler thread died
28 * IRQTF_WARNED - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed
29 * IRQTF_AFFINITY - irq thread is requested to adjust affinity
39 * Bit masks for desc->state
41 * IRQS_AUTODETECT - autodetection in progress
42 * IRQS_SPURIOUS_DISABLED - was disabled due to spurious interrupt
44 * IRQS_POLL_INPROGRESS - polling in progress
45 * IRQS_INPROGRESS - Interrupt in progress
46 * IRQS_ONESHOT - irq is not unmasked in primary handler
47 * IRQS_REPLAY - irq is replayed
48 * IRQS_WAITING - irq is waiting
49 * IRQS_DISABLED - irq is disabled
50 * IRQS_PENDING - irq is pending and replayed later
51 * IRQS_MASKED - irq is masked
52 * IRQS_SUSPENDED - irq is suspended
55 IRQS_AUTODETECT = 0x00000001,
56 IRQS_SPURIOUS_DISABLED = 0x00000002,
57 IRQS_POLL_INPROGRESS = 0x00000008,
58 IRQS_INPROGRESS = 0x00000010,
59 IRQS_ONESHOT = 0x00000020,
60 IRQS_REPLAY = 0x00000040,
61 IRQS_WAITING = 0x00000080,
62 IRQS_DISABLED = 0x00000100,
63 IRQS_PENDING = 0x00000200,
64 IRQS_MASKED = 0x00000400,
65 IRQS_SUSPENDED = 0x00000800,
72 #define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data)
74 /* Set default functions for irq_chip structures: */
75 extern void irq_chip_set_defaults(struct irq_chip *chip);
77 extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
79 extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp);
80 extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume);
82 extern int irq_startup(struct irq_desc *desc);
83 extern void irq_shutdown(struct irq_desc *desc);
84 extern void irq_enable(struct irq_desc *desc);
85 extern void irq_disable(struct irq_desc *desc);
86 extern void mask_irq(struct irq_desc *desc);
87 extern void unmask_irq(struct irq_desc *desc);
89 extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
91 irqreturn_t handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action);
92 irqreturn_t handle_irq_event(struct irq_desc *desc);
94 /* Resending of interrupts :*/
95 void check_irq_resend(struct irq_desc *desc, unsigned int irq);
96 bool irq_wait_for_poll(struct irq_desc *desc);
99 extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
100 extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc);
101 extern void register_handler_proc(unsigned int irq, struct irqaction *action);
102 extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
104 static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
105 static inline void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) { }
106 static inline void register_handler_proc(unsigned int irq,
107 struct irqaction *action) { }
108 static inline void unregister_handler_proc(unsigned int irq,
109 struct irqaction *action) { }
112 extern int irq_select_affinity_usr(unsigned int irq, struct cpumask *mask);
114 extern void irq_set_thread_affinity(struct irq_desc *desc);
116 /* Inline functions for support of irq chips on slow busses */
117 static inline void chip_bus_lock(struct irq_desc *desc)
119 if (unlikely(desc->irq_data.chip->irq_bus_lock))
120 desc->irq_data.chip->irq_bus_lock(&desc->irq_data);
123 static inline void chip_bus_sync_unlock(struct irq_desc *desc)
125 if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock))
126 desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data);
130 * Manipulation functions for irq_data.state
132 static inline void irqd_set_move_pending(struct irq_data *d)
134 d->state_use_accessors |= IRQD_SETAFFINITY_PENDING;
135 irq_compat_set_move_pending(irq_data_to_desc(d));
138 static inline void irqd_clr_move_pending(struct irq_data *d)
140 d->state_use_accessors &= ~IRQD_SETAFFINITY_PENDING;
141 irq_compat_clr_move_pending(irq_data_to_desc(d));
144 static inline void irqd_clear(struct irq_data *d, unsigned int mask)
146 d->state_use_accessors &= ~mask;
149 static inline void irqd_set(struct irq_data *d, unsigned int mask)
151 d->state_use_accessors |= mask;
154 static inline bool irqd_has_set(struct irq_data *d, unsigned int mask)
156 return d->state_use_accessors & mask;