5 * Please do not include this file in generic code. There is currently
6 * no requirement for any architecture to implement anything held
12 #include <linux/smp.h>
16 #include <linux/linkage.h>
17 #include <linux/cache.h>
18 #include <linux/spinlock.h>
19 #include <linux/cpumask.h>
20 #include <linux/gfp.h>
21 #include <linux/irqreturn.h>
22 #include <linux/irqnr.h>
23 #include <linux/errno.h>
24 #include <linux/topology.h>
25 #include <linux/wait.h>
28 #include <asm/ptrace.h>
29 #include <asm/irq_regs.h>
34 typedef void (*irq_flow_handler_t
)(unsigned int irq
,
35 struct irq_desc
*desc
);
36 typedef void (*irq_preflow_handler_t
)(struct irq_data
*data
);
41 * Bits 0-7 are the same as the IRQF_* bits in linux/interrupt.h
43 * IRQ_TYPE_NONE - default, unspecified type
44 * IRQ_TYPE_EDGE_RISING - rising edge triggered
45 * IRQ_TYPE_EDGE_FALLING - falling edge triggered
46 * IRQ_TYPE_EDGE_BOTH - rising and falling edge triggered
47 * IRQ_TYPE_LEVEL_HIGH - high level triggered
48 * IRQ_TYPE_LEVEL_LOW - low level triggered
49 * IRQ_TYPE_LEVEL_MASK - Mask to filter out the level bits
50 * IRQ_TYPE_SENSE_MASK - Mask for all the above bits
51 * IRQ_TYPE_PROBE - Special flag for probing in progress
53 * Bits which can be modified via irq_set/clear/modify_status_flags()
54 * IRQ_LEVEL - Interrupt is level type. Will be also
55 * updated in the code when the above trigger
56 * bits are modified via set_irq_type()
57 * IRQ_PER_CPU - Mark an interrupt PER_CPU. Will protect
58 * it from affinity setting
59 * IRQ_NOPROBE - Interrupt cannot be probed by autoprobing
60 * IRQ_NOREQUEST - Interrupt cannot be requested via
62 * IRQ_NOAUTOEN - Interrupt is not automatically enabled in
64 * IRQ_NO_BALANCING - Interrupt cannot be balanced (affinity set)
65 * IRQ_MOVE_PCNTXT - Interrupt can be migrated from process context
66 * IRQ_NESTED_TRHEAD - Interrupt nests into another thread
68 * Deprecated bits. They are kept updated as long as
69 * CONFIG_GENERIC_HARDIRQS_NO_COMPAT is not set. Will go away soon. These bits
70 * are internal state of the core code and if you really need to acces
71 * them then talk to the genirq maintainer instead of hacking
76 IRQ_TYPE_NONE
= 0x00000000,
77 IRQ_TYPE_EDGE_RISING
= 0x00000001,
78 IRQ_TYPE_EDGE_FALLING
= 0x00000002,
79 IRQ_TYPE_EDGE_BOTH
= (IRQ_TYPE_EDGE_FALLING
| IRQ_TYPE_EDGE_RISING
),
80 IRQ_TYPE_LEVEL_HIGH
= 0x00000004,
81 IRQ_TYPE_LEVEL_LOW
= 0x00000008,
82 IRQ_TYPE_LEVEL_MASK
= (IRQ_TYPE_LEVEL_LOW
| IRQ_TYPE_LEVEL_HIGH
),
83 IRQ_TYPE_SENSE_MASK
= 0x0000000f,
85 IRQ_TYPE_PROBE
= 0x00000010,
88 IRQ_PER_CPU
= (1 << 9),
89 IRQ_NOPROBE
= (1 << 10),
90 IRQ_NOREQUEST
= (1 << 11),
91 IRQ_NOAUTOEN
= (1 << 12),
92 IRQ_NO_BALANCING
= (1 << 13),
93 IRQ_MOVE_PCNTXT
= (1 << 14),
94 IRQ_NESTED_THREAD
= (1 << 15),
96 #ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT
97 IRQ_INPROGRESS
= (1 << 16),
98 IRQ_REPLAY
= (1 << 17),
99 IRQ_WAITING
= (1 << 18),
100 IRQ_DISABLED
= (1 << 19),
101 IRQ_PENDING
= (1 << 20),
102 IRQ_MASKED
= (1 << 21),
103 IRQ_MOVE_PENDING
= (1 << 22),
104 IRQ_AFFINITY_SET
= (1 << 23),
105 IRQ_WAKEUP
= (1 << 24),
109 #define IRQF_MODIFY_MASK \
110 (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \
111 IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \
112 IRQ_PER_CPU | IRQ_NESTED_THREAD)
114 #define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING)
116 static inline __deprecated
bool CHECK_IRQ_PER_CPU(unsigned int status
)
118 return status
& IRQ_PER_CPU
;
122 * Return value for chip->irq_set_affinity()
124 * IRQ_SET_MASK_OK - OK, core updates irq_data.affinity
125 * IRQ_SET_MASK_NOCPY - OK, chip did update irq_data.affinity
129 IRQ_SET_MASK_OK_NOCOPY
,
135 * struct irq_data - per irq and irq chip data passed down to chip functions
136 * @irq: interrupt number
137 * @node: node index useful for balancing
138 * @state_use_accessor: status information for irq chip functions.
139 * Use accessor functions to deal with it
140 * @chip: low level interrupt hardware access
141 * @handler_data: per-IRQ data for the irq_chip methods
142 * @chip_data: platform-specific per-chip private data for the chip
143 * methods, to allow shared chip implementations
144 * @msi_desc: MSI descriptor
145 * @affinity: IRQ affinity on SMP
147 * The fields here need to overlay the ones in irq_desc until we
148 * cleaned up the direct references and switched everything over to
154 unsigned int state_use_accessors
;
155 struct irq_chip
*chip
;
158 struct msi_desc
*msi_desc
;
160 cpumask_var_t affinity
;
165 * Bit masks for irq_data.state
167 * IRQD_TRIGGER_MASK - Mask for the trigger type bits
168 * IRQD_SETAFFINITY_PENDING - Affinity setting is pending
169 * IRQD_NO_BALANCING - Balancing disabled for this IRQ
170 * IRQD_PER_CPU - Interrupt is per cpu
171 * IRQD_AFFINITY_SET - Interrupt affinity was set
172 * IRQD_LEVEL - Interrupt is level triggered
173 * IRQD_WAKEUP_STATE - Interrupt is configured for wakeup
175 * IRDQ_MOVE_PCNTXT - Interrupt can be moved in process
177 * IRQD_IRQ_DISABLED - Disabled state of the interrupt
178 * IRQD_IRQ_MASKED - Masked state of the interrupt
179 * IRQD_IRQ_INPROGRESS - In progress state of the interrupt
182 IRQD_TRIGGER_MASK
= 0xf,
183 IRQD_SETAFFINITY_PENDING
= (1 << 8),
184 IRQD_NO_BALANCING
= (1 << 10),
185 IRQD_PER_CPU
= (1 << 11),
186 IRQD_AFFINITY_SET
= (1 << 12),
187 IRQD_LEVEL
= (1 << 13),
188 IRQD_WAKEUP_STATE
= (1 << 14),
189 IRQD_MOVE_PCNTXT
= (1 << 15),
190 IRQD_IRQ_DISABLED
= (1 << 16),
191 IRQD_IRQ_MASKED
= (1 << 17),
192 IRQD_IRQ_INPROGRESS
= (1 << 18),
195 static inline bool irqd_is_setaffinity_pending(struct irq_data
*d
)
197 return d
->state_use_accessors
& IRQD_SETAFFINITY_PENDING
;
200 static inline bool irqd_is_per_cpu(struct irq_data
*d
)
202 return d
->state_use_accessors
& IRQD_PER_CPU
;
205 static inline bool irqd_can_balance(struct irq_data
*d
)
207 return !(d
->state_use_accessors
& (IRQD_PER_CPU
| IRQD_NO_BALANCING
));
210 static inline bool irqd_affinity_was_set(struct irq_data
*d
)
212 return d
->state_use_accessors
& IRQD_AFFINITY_SET
;
215 static inline u32
irqd_get_trigger_type(struct irq_data
*d
)
217 return d
->state_use_accessors
& IRQD_TRIGGER_MASK
;
221 * Must only be called inside irq_chip.irq_set_type() functions.
223 static inline void irqd_set_trigger_type(struct irq_data
*d
, u32 type
)
225 d
->state_use_accessors
&= ~IRQD_TRIGGER_MASK
;
226 d
->state_use_accessors
|= type
& IRQD_TRIGGER_MASK
;
229 static inline bool irqd_is_level_type(struct irq_data
*d
)
231 return d
->state_use_accessors
& IRQD_LEVEL
;
234 static inline bool irqd_is_wakeup_set(struct irq_data
*d
)
236 return d
->state_use_accessors
& IRQD_WAKEUP_STATE
;
239 static inline bool irqd_can_move_in_process_context(struct irq_data
*d
)
241 return d
->state_use_accessors
& IRQD_MOVE_PCNTXT
;
244 static inline bool irqd_irq_disabled(struct irq_data
*d
)
246 return d
->state_use_accessors
& IRQD_IRQ_DISABLED
;
249 static inline bool irqd_irq_masked(struct irq_data
*d
)
251 return d
->state_use_accessors
& IRQD_IRQ_MASKED
;
254 static inline bool irqd_irq_inprogress(struct irq_data
*d
)
256 return d
->state_use_accessors
& IRQD_IRQ_INPROGRESS
;
260 * Functions for chained handlers which can be enabled/disabled by the
261 * standard disable_irq/enable_irq calls. Must be called with
262 * irq_desc->lock held.
264 static inline void irqd_set_chained_irq_inprogress(struct irq_data
*d
)
266 d
->state_use_accessors
|= IRQD_IRQ_INPROGRESS
;
269 static inline void irqd_clr_chained_irq_inprogress(struct irq_data
*d
)
271 d
->state_use_accessors
&= ~IRQD_IRQ_INPROGRESS
;
275 * struct irq_chip - hardware interrupt chip descriptor
277 * @name: name for /proc/interrupts
278 * @startup: deprecated, replaced by irq_startup
279 * @shutdown: deprecated, replaced by irq_shutdown
280 * @enable: deprecated, replaced by irq_enable
281 * @disable: deprecated, replaced by irq_disable
282 * @ack: deprecated, replaced by irq_ack
283 * @mask: deprecated, replaced by irq_mask
284 * @mask_ack: deprecated, replaced by irq_mask_ack
285 * @unmask: deprecated, replaced by irq_unmask
286 * @eoi: deprecated, replaced by irq_eoi
287 * @end: deprecated, will go away with __do_IRQ()
288 * @set_affinity: deprecated, replaced by irq_set_affinity
289 * @retrigger: deprecated, replaced by irq_retrigger
290 * @set_type: deprecated, replaced by irq_set_type
291 * @set_wake: deprecated, replaced by irq_wake
292 * @bus_lock: deprecated, replaced by irq_bus_lock
293 * @bus_sync_unlock: deprecated, replaced by irq_bus_sync_unlock
295 * @irq_startup: start up the interrupt (defaults to ->enable if NULL)
296 * @irq_shutdown: shut down the interrupt (defaults to ->disable if NULL)
297 * @irq_enable: enable the interrupt (defaults to chip->unmask if NULL)
298 * @irq_disable: disable the interrupt
299 * @irq_ack: start of a new interrupt
300 * @irq_mask: mask an interrupt source
301 * @irq_mask_ack: ack and mask an interrupt source
302 * @irq_unmask: unmask an interrupt source
303 * @irq_eoi: end of interrupt
304 * @irq_set_affinity: set the CPU affinity on SMP machines
305 * @irq_retrigger: resend an IRQ to the CPU
306 * @irq_set_type: set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ
307 * @irq_set_wake: enable/disable power-management wake-on of an IRQ
308 * @irq_bus_lock: function to lock access to slow bus (i2c) chips
309 * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips
310 * @irq_cpu_online: configure an interrupt source for a secondary CPU
311 * @irq_cpu_offline: un-configure an interrupt source for a secondary CPU
312 * @irq_print_chip: optional to print special chip info in show_interrupts
313 * @flags: chip specific flags
315 * @release: release function solely used by UML
319 #ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
320 unsigned int (*startup
)(unsigned int irq
);
321 void (*shutdown
)(unsigned int irq
);
322 void (*enable
)(unsigned int irq
);
323 void (*disable
)(unsigned int irq
);
325 void (*ack
)(unsigned int irq
);
326 void (*mask
)(unsigned int irq
);
327 void (*mask_ack
)(unsigned int irq
);
328 void (*unmask
)(unsigned int irq
);
329 void (*eoi
)(unsigned int irq
);
331 void (*end
)(unsigned int irq
);
332 int (*set_affinity
)(unsigned int irq
,
333 const struct cpumask
*dest
);
334 int (*retrigger
)(unsigned int irq
);
335 int (*set_type
)(unsigned int irq
, unsigned int flow_type
);
336 int (*set_wake
)(unsigned int irq
, unsigned int on
);
338 void (*bus_lock
)(unsigned int irq
);
339 void (*bus_sync_unlock
)(unsigned int irq
);
341 unsigned int (*irq_startup
)(struct irq_data
*data
);
342 void (*irq_shutdown
)(struct irq_data
*data
);
343 void (*irq_enable
)(struct irq_data
*data
);
344 void (*irq_disable
)(struct irq_data
*data
);
346 void (*irq_ack
)(struct irq_data
*data
);
347 void (*irq_mask
)(struct irq_data
*data
);
348 void (*irq_mask_ack
)(struct irq_data
*data
);
349 void (*irq_unmask
)(struct irq_data
*data
);
350 void (*irq_eoi
)(struct irq_data
*data
);
352 int (*irq_set_affinity
)(struct irq_data
*data
, const struct cpumask
*dest
, bool force
);
353 int (*irq_retrigger
)(struct irq_data
*data
);
354 int (*irq_set_type
)(struct irq_data
*data
, unsigned int flow_type
);
355 int (*irq_set_wake
)(struct irq_data
*data
, unsigned int on
);
357 void (*irq_bus_lock
)(struct irq_data
*data
);
358 void (*irq_bus_sync_unlock
)(struct irq_data
*data
);
360 void (*irq_cpu_online
)(struct irq_data
*data
);
361 void (*irq_cpu_offline
)(struct irq_data
*data
);
363 void (*irq_print_chip
)(struct irq_data
*data
, struct seq_file
*p
);
367 /* Currently used only by UML, might disappear one day.*/
368 #ifdef CONFIG_IRQ_RELEASE_METHOD
369 void (*release
)(unsigned int irq
, void *dev_id
);
374 * irq_chip specific flags
376 * IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type()
377 * IRQCHIP_EOI_IF_HANDLED: Only issue irq_eoi() when irq was handled
378 * IRQCHIP_MASK_ON_SUSPEND: Mask non wake irqs in the suspend path
379 * IRQCHIP_ONOFFLINE_ENABLED: Only call irq_on/off_line callbacks
383 IRQCHIP_SET_TYPE_MASKED
= (1 << 0),
384 IRQCHIP_EOI_IF_HANDLED
= (1 << 1),
385 IRQCHIP_MASK_ON_SUSPEND
= (1 << 2),
386 IRQCHIP_ONOFFLINE_ENABLED
= (1 << 3),
389 /* This include will go away once we isolated irq_desc usage to core code */
390 #include <linux/irqdesc.h>
393 * Pick up the arch-dependent methods:
395 #include <asm/hw_irq.h>
397 #ifndef NR_IRQS_LEGACY
398 # define NR_IRQS_LEGACY 0
401 #ifndef ARCH_IRQ_INIT_FLAGS
402 # define ARCH_IRQ_INIT_FLAGS 0
405 #define IRQ_DEFAULT_INIT_FLAGS ARCH_IRQ_INIT_FLAGS
408 extern int setup_irq(unsigned int irq
, struct irqaction
*new);
409 extern void remove_irq(unsigned int irq
, struct irqaction
*act
);
411 extern void irq_cpu_online(void);
412 extern void irq_cpu_offline(void);
413 extern int __irq_set_affinity_locked(struct irq_data
*data
, const struct cpumask
*cpumask
);
415 #ifdef CONFIG_GENERIC_HARDIRQS
417 #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ)
418 void move_native_irq(int irq
);
419 void move_masked_irq(int irq
);
420 void irq_move_irq(struct irq_data
*data
);
421 void irq_move_masked_irq(struct irq_data
*data
);
423 static inline void move_native_irq(int irq
) { }
424 static inline void move_masked_irq(int irq
) { }
425 static inline void irq_move_irq(struct irq_data
*data
) { }
426 static inline void irq_move_masked_irq(struct irq_data
*data
) { }
429 extern int no_irq_affinity
;
432 * Built-in IRQ handlers for various IRQ types,
433 * callable via desc->handle_irq()
435 extern void handle_level_irq(unsigned int irq
, struct irq_desc
*desc
);
436 extern void handle_fasteoi_irq(unsigned int irq
, struct irq_desc
*desc
);
437 extern void handle_edge_irq(unsigned int irq
, struct irq_desc
*desc
);
438 extern void handle_edge_eoi_irq(unsigned int irq
, struct irq_desc
*desc
);
439 extern void handle_simple_irq(unsigned int irq
, struct irq_desc
*desc
);
440 extern void handle_percpu_irq(unsigned int irq
, struct irq_desc
*desc
);
441 extern void handle_bad_irq(unsigned int irq
, struct irq_desc
*desc
);
442 extern void handle_nested_irq(unsigned int irq
);
444 /* Handling of unhandled and spurious interrupts: */
445 extern void note_interrupt(unsigned int irq
, struct irq_desc
*desc
,
446 irqreturn_t action_ret
);
449 /* Enable/disable irq debugging output: */
450 extern int noirqdebug_setup(char *str
);
452 /* Checks whether the interrupt can be requested by request_irq(): */
453 extern int can_request_irq(unsigned int irq
, unsigned long irqflags
);
455 /* Dummy irq-chip implementations: */
456 extern struct irq_chip no_irq_chip
;
457 extern struct irq_chip dummy_irq_chip
;
460 irq_set_chip_and_handler_name(unsigned int irq
, struct irq_chip
*chip
,
461 irq_flow_handler_t handle
, const char *name
);
463 static inline void irq_set_chip_and_handler(unsigned int irq
, struct irq_chip
*chip
,
464 irq_flow_handler_t handle
)
466 irq_set_chip_and_handler_name(irq
, chip
, handle
, NULL
);
470 __irq_set_handler(unsigned int irq
, irq_flow_handler_t handle
, int is_chained
,
474 irq_set_handler(unsigned int irq
, irq_flow_handler_t handle
)
476 __irq_set_handler(irq
, handle
, 0, NULL
);
480 * Set a highlevel chained flow handler for a given IRQ.
481 * (a chained handler is automatically enabled and set to
482 * IRQ_NOREQUEST and IRQ_NOPROBE)
485 irq_set_chained_handler(unsigned int irq
, irq_flow_handler_t handle
)
487 __irq_set_handler(irq
, handle
, 1, NULL
);
490 void irq_modify_status(unsigned int irq
, unsigned long clr
, unsigned long set
);
492 static inline void irq_set_status_flags(unsigned int irq
, unsigned long set
)
494 irq_modify_status(irq
, 0, set
);
497 static inline void irq_clear_status_flags(unsigned int irq
, unsigned long clr
)
499 irq_modify_status(irq
, clr
, 0);
502 static inline void irq_set_noprobe(unsigned int irq
)
504 irq_modify_status(irq
, 0, IRQ_NOPROBE
);
507 static inline void irq_set_probe(unsigned int irq
)
509 irq_modify_status(irq
, IRQ_NOPROBE
, 0);
512 static inline void irq_set_nested_thread(unsigned int irq
, bool nest
)
515 irq_set_status_flags(irq
, IRQ_NESTED_THREAD
);
517 irq_clear_status_flags(irq
, IRQ_NESTED_THREAD
);
520 /* Handle dynamic irq creation and destruction */
521 extern unsigned int create_irq_nr(unsigned int irq_want
, int node
);
522 extern int create_irq(void);
523 extern void destroy_irq(unsigned int irq
);
526 * Dynamic irq helper functions. Obsolete. Use irq_alloc_desc* and
527 * irq_free_desc instead.
529 extern void dynamic_irq_cleanup(unsigned int irq
);
530 static inline void dynamic_irq_init(unsigned int irq
)
532 dynamic_irq_cleanup(irq
);
535 /* Set/get chip/data for an IRQ: */
536 extern int irq_set_chip(unsigned int irq
, struct irq_chip
*chip
);
537 extern int irq_set_handler_data(unsigned int irq
, void *data
);
538 extern int irq_set_chip_data(unsigned int irq
, void *data
);
539 extern int irq_set_irq_type(unsigned int irq
, unsigned int type
);
540 extern int irq_set_msi_desc(unsigned int irq
, struct msi_desc
*entry
);
541 extern struct irq_data
*irq_get_irq_data(unsigned int irq
);
543 static inline struct irq_chip
*irq_get_chip(unsigned int irq
)
545 struct irq_data
*d
= irq_get_irq_data(irq
);
546 return d
? d
->chip
: NULL
;
549 static inline struct irq_chip
*irq_data_get_irq_chip(struct irq_data
*d
)
554 static inline void *irq_get_chip_data(unsigned int irq
)
556 struct irq_data
*d
= irq_get_irq_data(irq
);
557 return d
? d
->chip_data
: NULL
;
560 static inline void *irq_data_get_irq_chip_data(struct irq_data
*d
)
565 static inline void *irq_get_handler_data(unsigned int irq
)
567 struct irq_data
*d
= irq_get_irq_data(irq
);
568 return d
? d
->handler_data
: NULL
;
571 static inline void *irq_data_get_irq_handler_data(struct irq_data
*d
)
573 return d
->handler_data
;
576 static inline struct msi_desc
*irq_get_msi_desc(unsigned int irq
)
578 struct irq_data
*d
= irq_get_irq_data(irq
);
579 return d
? d
->msi_desc
: NULL
;
582 static inline struct msi_desc
*irq_data_get_msi(struct irq_data
*d
)
587 #ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT
588 /* Please do not use: Use the replacement functions instead */
589 static inline int set_irq_chip(unsigned int irq
, struct irq_chip
*chip
)
591 return irq_set_chip(irq
, chip
);
593 static inline int set_irq_data(unsigned int irq
, void *data
)
595 return irq_set_handler_data(irq
, data
);
597 static inline int set_irq_chip_data(unsigned int irq
, void *data
)
599 return irq_set_chip_data(irq
, data
);
601 static inline int set_irq_type(unsigned int irq
, unsigned int type
)
603 return irq_set_irq_type(irq
, type
);
605 static inline int set_irq_msi(unsigned int irq
, struct msi_desc
*entry
)
607 return irq_set_msi_desc(irq
, entry
);
609 static inline struct irq_chip
*get_irq_chip(unsigned int irq
)
611 return irq_get_chip(irq
);
613 static inline void *get_irq_chip_data(unsigned int irq
)
615 return irq_get_chip_data(irq
);
617 static inline void *get_irq_data(unsigned int irq
)
619 return irq_get_handler_data(irq
);
621 static inline void *irq_data_get_irq_data(struct irq_data
*d
)
623 return irq_data_get_irq_handler_data(d
);
625 static inline struct msi_desc
*get_irq_msi(unsigned int irq
)
627 return irq_get_msi_desc(irq
);
629 static inline void set_irq_noprobe(unsigned int irq
)
631 irq_set_noprobe(irq
);
633 static inline void set_irq_probe(unsigned int irq
)
637 static inline void set_irq_nested_thread(unsigned int irq
, int nest
)
639 irq_set_nested_thread(irq
, nest
);
642 set_irq_chip_and_handler_name(unsigned int irq
, struct irq_chip
*chip
,
643 irq_flow_handler_t handle
, const char *name
)
645 irq_set_chip_and_handler_name(irq
, chip
, handle
, name
);
648 set_irq_chip_and_handler(unsigned int irq
, struct irq_chip
*chip
,
649 irq_flow_handler_t handle
)
651 irq_set_chip_and_handler(irq
, chip
, handle
);
654 __set_irq_handler(unsigned int irq
, irq_flow_handler_t handle
, int is_chained
,
657 __irq_set_handler(irq
, handle
, is_chained
, name
);
659 static inline void set_irq_handler(unsigned int irq
, irq_flow_handler_t handle
)
661 irq_set_handler(irq
, handle
);
664 set_irq_chained_handler(unsigned int irq
, irq_flow_handler_t handle
)
666 irq_set_chained_handler(irq
, handle
);
670 int irq_alloc_descs(int irq
, unsigned int from
, unsigned int cnt
, int node
);
671 void irq_free_descs(unsigned int irq
, unsigned int cnt
);
672 int irq_reserve_irqs(unsigned int from
, unsigned int cnt
);
674 static inline int irq_alloc_desc(int node
)
676 return irq_alloc_descs(-1, 0, 1, node
);
679 static inline int irq_alloc_desc_at(unsigned int at
, int node
)
681 return irq_alloc_descs(at
, at
, 1, node
);
684 static inline int irq_alloc_desc_from(unsigned int from
, int node
)
686 return irq_alloc_descs(-1, from
, 1, node
);
689 static inline void irq_free_desc(unsigned int irq
)
691 irq_free_descs(irq
, 1);
694 static inline int irq_reserve_irq(unsigned int irq
)
696 return irq_reserve_irqs(irq
, 1);
699 #endif /* CONFIG_GENERIC_HARDIRQS */
701 #endif /* !CONFIG_S390 */
703 #endif /* _LINUX_IRQ_H */