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 irq_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_NOTHREAD - Interrupt cannot be threaded
63 * IRQ_NOAUTOEN - Interrupt is not automatically enabled in
65 * IRQ_NO_BALANCING - Interrupt cannot be balanced (affinity set)
66 * IRQ_MOVE_PCNTXT - Interrupt can be migrated from process context
67 * IRQ_NESTED_TRHEAD - Interrupt nests into another thread
70 IRQ_TYPE_NONE
= 0x00000000,
71 IRQ_TYPE_EDGE_RISING
= 0x00000001,
72 IRQ_TYPE_EDGE_FALLING
= 0x00000002,
73 IRQ_TYPE_EDGE_BOTH
= (IRQ_TYPE_EDGE_FALLING
| IRQ_TYPE_EDGE_RISING
),
74 IRQ_TYPE_LEVEL_HIGH
= 0x00000004,
75 IRQ_TYPE_LEVEL_LOW
= 0x00000008,
76 IRQ_TYPE_LEVEL_MASK
= (IRQ_TYPE_LEVEL_LOW
| IRQ_TYPE_LEVEL_HIGH
),
77 IRQ_TYPE_SENSE_MASK
= 0x0000000f,
79 IRQ_TYPE_PROBE
= 0x00000010,
82 IRQ_PER_CPU
= (1 << 9),
83 IRQ_NOPROBE
= (1 << 10),
84 IRQ_NOREQUEST
= (1 << 11),
85 IRQ_NOAUTOEN
= (1 << 12),
86 IRQ_NO_BALANCING
= (1 << 13),
87 IRQ_MOVE_PCNTXT
= (1 << 14),
88 IRQ_NESTED_THREAD
= (1 << 15),
89 IRQ_NOTHREAD
= (1 << 16),
92 #define IRQF_MODIFY_MASK \
93 (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \
94 IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \
95 IRQ_PER_CPU | IRQ_NESTED_THREAD)
97 #define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING)
100 * Return value for chip->irq_set_affinity()
102 * IRQ_SET_MASK_OK - OK, core updates irq_data.affinity
103 * IRQ_SET_MASK_NOCPY - OK, chip did update irq_data.affinity
107 IRQ_SET_MASK_OK_NOCOPY
,
113 * struct irq_data - per irq and irq chip data passed down to chip functions
114 * @irq: interrupt number
115 * @node: node index useful for balancing
116 * @state_use_accessors: status information for irq chip functions.
117 * Use accessor functions to deal with it
118 * @chip: low level interrupt hardware access
119 * @handler_data: per-IRQ data for the irq_chip methods
120 * @chip_data: platform-specific per-chip private data for the chip
121 * methods, to allow shared chip implementations
122 * @msi_desc: MSI descriptor
123 * @affinity: IRQ affinity on SMP
125 * The fields here need to overlay the ones in irq_desc until we
126 * cleaned up the direct references and switched everything over to
132 unsigned int state_use_accessors
;
133 struct irq_chip
*chip
;
136 struct msi_desc
*msi_desc
;
138 cpumask_var_t affinity
;
143 * Bit masks for irq_data.state
145 * IRQD_TRIGGER_MASK - Mask for the trigger type bits
146 * IRQD_SETAFFINITY_PENDING - Affinity setting is pending
147 * IRQD_NO_BALANCING - Balancing disabled for this IRQ
148 * IRQD_PER_CPU - Interrupt is per cpu
149 * IRQD_AFFINITY_SET - Interrupt affinity was set
150 * IRQD_LEVEL - Interrupt is level triggered
151 * IRQD_WAKEUP_STATE - Interrupt is configured for wakeup
153 * IRDQ_MOVE_PCNTXT - Interrupt can be moved in process
155 * IRQD_IRQ_DISABLED - Disabled state of the interrupt
156 * IRQD_IRQ_MASKED - Masked state of the interrupt
157 * IRQD_IRQ_INPROGRESS - In progress state of the interrupt
160 IRQD_TRIGGER_MASK
= 0xf,
161 IRQD_SETAFFINITY_PENDING
= (1 << 8),
162 IRQD_NO_BALANCING
= (1 << 10),
163 IRQD_PER_CPU
= (1 << 11),
164 IRQD_AFFINITY_SET
= (1 << 12),
165 IRQD_LEVEL
= (1 << 13),
166 IRQD_WAKEUP_STATE
= (1 << 14),
167 IRQD_MOVE_PCNTXT
= (1 << 15),
168 IRQD_IRQ_DISABLED
= (1 << 16),
169 IRQD_IRQ_MASKED
= (1 << 17),
170 IRQD_IRQ_INPROGRESS
= (1 << 18),
173 static inline bool irqd_is_setaffinity_pending(struct irq_data
*d
)
175 return d
->state_use_accessors
& IRQD_SETAFFINITY_PENDING
;
178 static inline bool irqd_is_per_cpu(struct irq_data
*d
)
180 return d
->state_use_accessors
& IRQD_PER_CPU
;
183 static inline bool irqd_can_balance(struct irq_data
*d
)
185 return !(d
->state_use_accessors
& (IRQD_PER_CPU
| IRQD_NO_BALANCING
));
188 static inline bool irqd_affinity_was_set(struct irq_data
*d
)
190 return d
->state_use_accessors
& IRQD_AFFINITY_SET
;
193 static inline void irqd_mark_affinity_was_set(struct irq_data
*d
)
195 d
->state_use_accessors
|= IRQD_AFFINITY_SET
;
198 static inline u32
irqd_get_trigger_type(struct irq_data
*d
)
200 return d
->state_use_accessors
& IRQD_TRIGGER_MASK
;
204 * Must only be called inside irq_chip.irq_set_type() functions.
206 static inline void irqd_set_trigger_type(struct irq_data
*d
, u32 type
)
208 d
->state_use_accessors
&= ~IRQD_TRIGGER_MASK
;
209 d
->state_use_accessors
|= type
& IRQD_TRIGGER_MASK
;
212 static inline bool irqd_is_level_type(struct irq_data
*d
)
214 return d
->state_use_accessors
& IRQD_LEVEL
;
217 static inline bool irqd_is_wakeup_set(struct irq_data
*d
)
219 return d
->state_use_accessors
& IRQD_WAKEUP_STATE
;
222 static inline bool irqd_can_move_in_process_context(struct irq_data
*d
)
224 return d
->state_use_accessors
& IRQD_MOVE_PCNTXT
;
227 static inline bool irqd_irq_disabled(struct irq_data
*d
)
229 return d
->state_use_accessors
& IRQD_IRQ_DISABLED
;
232 static inline bool irqd_irq_masked(struct irq_data
*d
)
234 return d
->state_use_accessors
& IRQD_IRQ_MASKED
;
237 static inline bool irqd_irq_inprogress(struct irq_data
*d
)
239 return d
->state_use_accessors
& IRQD_IRQ_INPROGRESS
;
243 * Functions for chained handlers which can be enabled/disabled by the
244 * standard disable_irq/enable_irq calls. Must be called with
245 * irq_desc->lock held.
247 static inline void irqd_set_chained_irq_inprogress(struct irq_data
*d
)
249 d
->state_use_accessors
|= IRQD_IRQ_INPROGRESS
;
252 static inline void irqd_clr_chained_irq_inprogress(struct irq_data
*d
)
254 d
->state_use_accessors
&= ~IRQD_IRQ_INPROGRESS
;
258 * struct irq_chip - hardware interrupt chip descriptor
260 * @name: name for /proc/interrupts
261 * @irq_startup: start up the interrupt (defaults to ->enable if NULL)
262 * @irq_shutdown: shut down the interrupt (defaults to ->disable if NULL)
263 * @irq_enable: enable the interrupt (defaults to chip->unmask if NULL)
264 * @irq_disable: disable the interrupt
265 * @irq_ack: start of a new interrupt
266 * @irq_mask: mask an interrupt source
267 * @irq_mask_ack: ack and mask an interrupt source
268 * @irq_unmask: unmask an interrupt source
269 * @irq_eoi: end of interrupt
270 * @irq_set_affinity: set the CPU affinity on SMP machines
271 * @irq_retrigger: resend an IRQ to the CPU
272 * @irq_set_type: set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ
273 * @irq_set_wake: enable/disable power-management wake-on of an IRQ
274 * @irq_bus_lock: function to lock access to slow bus (i2c) chips
275 * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips
276 * @irq_cpu_online: configure an interrupt source for a secondary CPU
277 * @irq_cpu_offline: un-configure an interrupt source for a secondary CPU
278 * @irq_suspend: function called from core code on suspend once per chip
279 * @irq_resume: function called from core code on resume once per chip
280 * @irq_pm_shutdown: function called from core code on shutdown once per chip
281 * @irq_print_chip: optional to print special chip info in show_interrupts
282 * @flags: chip specific flags
284 * @release: release function solely used by UML
288 unsigned int (*irq_startup
)(struct irq_data
*data
);
289 void (*irq_shutdown
)(struct irq_data
*data
);
290 void (*irq_enable
)(struct irq_data
*data
);
291 void (*irq_disable
)(struct irq_data
*data
);
293 void (*irq_ack
)(struct irq_data
*data
);
294 void (*irq_mask
)(struct irq_data
*data
);
295 void (*irq_mask_ack
)(struct irq_data
*data
);
296 void (*irq_unmask
)(struct irq_data
*data
);
297 void (*irq_eoi
)(struct irq_data
*data
);
299 int (*irq_set_affinity
)(struct irq_data
*data
, const struct cpumask
*dest
, bool force
);
300 int (*irq_retrigger
)(struct irq_data
*data
);
301 int (*irq_set_type
)(struct irq_data
*data
, unsigned int flow_type
);
302 int (*irq_set_wake
)(struct irq_data
*data
, unsigned int on
);
304 void (*irq_bus_lock
)(struct irq_data
*data
);
305 void (*irq_bus_sync_unlock
)(struct irq_data
*data
);
307 void (*irq_cpu_online
)(struct irq_data
*data
);
308 void (*irq_cpu_offline
)(struct irq_data
*data
);
310 void (*irq_suspend
)(struct irq_data
*data
);
311 void (*irq_resume
)(struct irq_data
*data
);
312 void (*irq_pm_shutdown
)(struct irq_data
*data
);
314 void (*irq_print_chip
)(struct irq_data
*data
, struct seq_file
*p
);
318 /* Currently used only by UML, might disappear one day.*/
319 #ifdef CONFIG_IRQ_RELEASE_METHOD
320 void (*release
)(unsigned int irq
, void *dev_id
);
325 * irq_chip specific flags
327 * IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type()
328 * IRQCHIP_EOI_IF_HANDLED: Only issue irq_eoi() when irq was handled
329 * IRQCHIP_MASK_ON_SUSPEND: Mask non wake irqs in the suspend path
330 * IRQCHIP_ONOFFLINE_ENABLED: Only call irq_on/off_line callbacks
334 IRQCHIP_SET_TYPE_MASKED
= (1 << 0),
335 IRQCHIP_EOI_IF_HANDLED
= (1 << 1),
336 IRQCHIP_MASK_ON_SUSPEND
= (1 << 2),
337 IRQCHIP_ONOFFLINE_ENABLED
= (1 << 3),
340 /* This include will go away once we isolated irq_desc usage to core code */
341 #include <linux/irqdesc.h>
344 * Pick up the arch-dependent methods:
346 #include <asm/hw_irq.h>
348 #ifndef NR_IRQS_LEGACY
349 # define NR_IRQS_LEGACY 0
352 #ifndef ARCH_IRQ_INIT_FLAGS
353 # define ARCH_IRQ_INIT_FLAGS 0
356 #define IRQ_DEFAULT_INIT_FLAGS ARCH_IRQ_INIT_FLAGS
359 extern int setup_irq(unsigned int irq
, struct irqaction
*new);
360 extern void remove_irq(unsigned int irq
, struct irqaction
*act
);
362 extern void irq_cpu_online(void);
363 extern void irq_cpu_offline(void);
364 extern int __irq_set_affinity_locked(struct irq_data
*data
, const struct cpumask
*cpumask
);
366 #ifdef CONFIG_GENERIC_HARDIRQS
368 #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ)
369 void irq_move_irq(struct irq_data
*data
);
370 void irq_move_masked_irq(struct irq_data
*data
);
372 static inline void irq_move_irq(struct irq_data
*data
) { }
373 static inline void irq_move_masked_irq(struct irq_data
*data
) { }
376 extern int no_irq_affinity
;
379 * Built-in IRQ handlers for various IRQ types,
380 * callable via desc->handle_irq()
382 extern void handle_level_irq(unsigned int irq
, struct irq_desc
*desc
);
383 extern void handle_fasteoi_irq(unsigned int irq
, struct irq_desc
*desc
);
384 extern void handle_edge_irq(unsigned int irq
, struct irq_desc
*desc
);
385 extern void handle_edge_eoi_irq(unsigned int irq
, struct irq_desc
*desc
);
386 extern void handle_simple_irq(unsigned int irq
, struct irq_desc
*desc
);
387 extern void handle_percpu_irq(unsigned int irq
, struct irq_desc
*desc
);
388 extern void handle_bad_irq(unsigned int irq
, struct irq_desc
*desc
);
389 extern void handle_nested_irq(unsigned int irq
);
391 /* Handling of unhandled and spurious interrupts: */
392 extern void note_interrupt(unsigned int irq
, struct irq_desc
*desc
,
393 irqreturn_t action_ret
);
396 /* Enable/disable irq debugging output: */
397 extern int noirqdebug_setup(char *str
);
399 /* Checks whether the interrupt can be requested by request_irq(): */
400 extern int can_request_irq(unsigned int irq
, unsigned long irqflags
);
402 /* Dummy irq-chip implementations: */
403 extern struct irq_chip no_irq_chip
;
404 extern struct irq_chip dummy_irq_chip
;
407 irq_set_chip_and_handler_name(unsigned int irq
, struct irq_chip
*chip
,
408 irq_flow_handler_t handle
, const char *name
);
410 static inline void irq_set_chip_and_handler(unsigned int irq
, struct irq_chip
*chip
,
411 irq_flow_handler_t handle
)
413 irq_set_chip_and_handler_name(irq
, chip
, handle
, NULL
);
417 __irq_set_handler(unsigned int irq
, irq_flow_handler_t handle
, int is_chained
,
421 irq_set_handler(unsigned int irq
, irq_flow_handler_t handle
)
423 __irq_set_handler(irq
, handle
, 0, NULL
);
427 * Set a highlevel chained flow handler for a given IRQ.
428 * (a chained handler is automatically enabled and set to
429 * IRQ_NOREQUEST, IRQ_NOPROBE, and IRQ_NOTHREAD)
432 irq_set_chained_handler(unsigned int irq
, irq_flow_handler_t handle
)
434 __irq_set_handler(irq
, handle
, 1, NULL
);
437 void irq_modify_status(unsigned int irq
, unsigned long clr
, unsigned long set
);
439 static inline void irq_set_status_flags(unsigned int irq
, unsigned long set
)
441 irq_modify_status(irq
, 0, set
);
444 static inline void irq_clear_status_flags(unsigned int irq
, unsigned long clr
)
446 irq_modify_status(irq
, clr
, 0);
449 static inline void irq_set_noprobe(unsigned int irq
)
451 irq_modify_status(irq
, 0, IRQ_NOPROBE
);
454 static inline void irq_set_probe(unsigned int irq
)
456 irq_modify_status(irq
, IRQ_NOPROBE
, 0);
459 static inline void irq_set_nothread(unsigned int irq
)
461 irq_modify_status(irq
, 0, IRQ_NOTHREAD
);
464 static inline void irq_set_thread(unsigned int irq
)
466 irq_modify_status(irq
, IRQ_NOTHREAD
, 0);
469 static inline void irq_set_nested_thread(unsigned int irq
, bool nest
)
472 irq_set_status_flags(irq
, IRQ_NESTED_THREAD
);
474 irq_clear_status_flags(irq
, IRQ_NESTED_THREAD
);
477 /* Handle dynamic irq creation and destruction */
478 extern unsigned int create_irq_nr(unsigned int irq_want
, int node
);
479 extern int create_irq(void);
480 extern void destroy_irq(unsigned int irq
);
483 * Dynamic irq helper functions. Obsolete. Use irq_alloc_desc* and
484 * irq_free_desc instead.
486 extern void dynamic_irq_cleanup(unsigned int irq
);
487 static inline void dynamic_irq_init(unsigned int irq
)
489 dynamic_irq_cleanup(irq
);
492 /* Set/get chip/data for an IRQ: */
493 extern int irq_set_chip(unsigned int irq
, struct irq_chip
*chip
);
494 extern int irq_set_handler_data(unsigned int irq
, void *data
);
495 extern int irq_set_chip_data(unsigned int irq
, void *data
);
496 extern int irq_set_irq_type(unsigned int irq
, unsigned int type
);
497 extern int irq_set_msi_desc(unsigned int irq
, struct msi_desc
*entry
);
498 extern struct irq_data
*irq_get_irq_data(unsigned int irq
);
500 static inline struct irq_chip
*irq_get_chip(unsigned int irq
)
502 struct irq_data
*d
= irq_get_irq_data(irq
);
503 return d
? d
->chip
: NULL
;
506 static inline struct irq_chip
*irq_data_get_irq_chip(struct irq_data
*d
)
511 static inline void *irq_get_chip_data(unsigned int irq
)
513 struct irq_data
*d
= irq_get_irq_data(irq
);
514 return d
? d
->chip_data
: NULL
;
517 static inline void *irq_data_get_irq_chip_data(struct irq_data
*d
)
522 static inline void *irq_get_handler_data(unsigned int irq
)
524 struct irq_data
*d
= irq_get_irq_data(irq
);
525 return d
? d
->handler_data
: NULL
;
528 static inline void *irq_data_get_irq_handler_data(struct irq_data
*d
)
530 return d
->handler_data
;
533 static inline struct msi_desc
*irq_get_msi_desc(unsigned int irq
)
535 struct irq_data
*d
= irq_get_irq_data(irq
);
536 return d
? d
->msi_desc
: NULL
;
539 static inline struct msi_desc
*irq_data_get_msi(struct irq_data
*d
)
544 int irq_alloc_descs(int irq
, unsigned int from
, unsigned int cnt
, int node
);
545 void irq_free_descs(unsigned int irq
, unsigned int cnt
);
546 int irq_reserve_irqs(unsigned int from
, unsigned int cnt
);
548 static inline int irq_alloc_desc(int node
)
550 return irq_alloc_descs(-1, 0, 1, node
);
553 static inline int irq_alloc_desc_at(unsigned int at
, int node
)
555 return irq_alloc_descs(at
, at
, 1, node
);
558 static inline int irq_alloc_desc_from(unsigned int from
, int node
)
560 return irq_alloc_descs(-1, from
, 1, node
);
563 static inline void irq_free_desc(unsigned int irq
)
565 irq_free_descs(irq
, 1);
568 static inline int irq_reserve_irq(unsigned int irq
)
570 return irq_reserve_irqs(irq
, 1);
573 #ifndef irq_reg_writel
574 # define irq_reg_writel(val, addr) writel(val, addr)
576 #ifndef irq_reg_readl
577 # define irq_reg_readl(addr) readl(addr)
581 * struct irq_chip_regs - register offsets for struct irq_gci
582 * @enable: Enable register offset to reg_base
583 * @disable: Disable register offset to reg_base
584 * @mask: Mask register offset to reg_base
585 * @ack: Ack register offset to reg_base
586 * @eoi: Eoi register offset to reg_base
587 * @type: Type configuration register offset to reg_base
588 * @polarity: Polarity configuration register offset to reg_base
590 struct irq_chip_regs
{
591 unsigned long enable
;
592 unsigned long disable
;
597 unsigned long polarity
;
601 * struct irq_chip_type - Generic interrupt chip instance for a flow type
602 * @chip: The real interrupt chip which provides the callbacks
603 * @regs: Register offsets for this chip
604 * @handler: Flow handler associated with this chip
605 * @type: Chip can handle these flow types
607 * A irq_generic_chip can have several instances of irq_chip_type when
608 * it requires different functions and register offsets for different
611 struct irq_chip_type
{
612 struct irq_chip chip
;
613 struct irq_chip_regs regs
;
614 irq_flow_handler_t handler
;
619 * struct irq_chip_generic - Generic irq chip data structure
620 * @lock: Lock to protect register and cache data access
621 * @reg_base: Register base address (virtual)
622 * @irq_base: Interrupt base nr for this chip
623 * @irq_cnt: Number of interrupts handled by this chip
624 * @mask_cache: Cached mask register
625 * @type_cache: Cached type register
626 * @polarity_cache: Cached polarity register
627 * @wake_enabled: Interrupt can wakeup from suspend
628 * @wake_active: Interrupt is marked as an wakeup from suspend source
629 * @num_ct: Number of available irq_chip_type instances (usually 1)
630 * @private: Private data for non generic chip callbacks
631 * @list: List head for keeping track of instances
632 * @chip_types: Array of interrupt irq_chip_types
634 * Note, that irq_chip_generic can have multiple irq_chip_type
635 * implementations which can be associated to a particular irq line of
636 * an irq_chip_generic instance. That allows to share and protect
637 * state in an irq_chip_generic instance when we need to implement
638 * different flow mechanisms (level/edge) for it.
640 struct irq_chip_generic
{
642 void __iomem
*reg_base
;
643 unsigned int irq_base
;
644 unsigned int irq_cnt
;
652 struct list_head list
;
653 struct irq_chip_type chip_types
[0];
657 * enum irq_gc_flags - Initialization flags for generic irq chips
658 * @IRQ_GC_INIT_MASK_CACHE: Initialize the mask_cache by reading mask reg
659 * @IRQ_GC_INIT_NESTED_LOCK: Set the lock class of the irqs to nested for
660 * irq chips which need to call irq_set_wake() on
661 * the parent irq. Usually GPIO implementations
664 IRQ_GC_INIT_MASK_CACHE
= 1 << 0,
665 IRQ_GC_INIT_NESTED_LOCK
= 1 << 1,
668 /* Generic chip callback functions */
669 void irq_gc_noop(struct irq_data
*d
);
670 void irq_gc_mask_disable_reg(struct irq_data
*d
);
671 void irq_gc_mask_set_bit(struct irq_data
*d
);
672 void irq_gc_mask_clr_bit(struct irq_data
*d
);
673 void irq_gc_unmask_enable_reg(struct irq_data
*d
);
674 void irq_gc_ack_set_bit(struct irq_data
*d
);
675 void irq_gc_ack_clr_bit(struct irq_data
*d
);
676 void irq_gc_mask_disable_reg_and_ack(struct irq_data
*d
);
677 void irq_gc_eoi(struct irq_data
*d
);
678 int irq_gc_set_wake(struct irq_data
*d
, unsigned int on
);
680 /* Setup functions for irq_chip_generic */
681 struct irq_chip_generic
*
682 irq_alloc_generic_chip(const char *name
, int nr_ct
, unsigned int irq_base
,
683 void __iomem
*reg_base
, irq_flow_handler_t handler
);
684 void irq_setup_generic_chip(struct irq_chip_generic
*gc
, u32 msk
,
685 enum irq_gc_flags flags
, unsigned int clr
,
687 int irq_setup_alt_chip(struct irq_data
*d
, unsigned int type
);
688 void irq_remove_generic_chip(struct irq_chip_generic
*gc
, u32 msk
,
689 unsigned int clr
, unsigned int set
);
691 static inline struct irq_chip_type
*irq_data_get_chip_type(struct irq_data
*d
)
693 return container_of(d
->chip
, struct irq_chip_type
, chip
);
696 #define IRQ_MSK(n) (u32)((n) < 32 ? ((1 << (n)) - 1) : UINT_MAX)
699 static inline void irq_gc_lock(struct irq_chip_generic
*gc
)
701 raw_spin_lock(&gc
->lock
);
704 static inline void irq_gc_unlock(struct irq_chip_generic
*gc
)
706 raw_spin_unlock(&gc
->lock
);
709 static inline void irq_gc_lock(struct irq_chip_generic
*gc
) { }
710 static inline void irq_gc_unlock(struct irq_chip_generic
*gc
) { }
713 #endif /* CONFIG_GENERIC_HARDIRQS */
715 #endif /* !CONFIG_S390 */
717 #endif /* _LINUX_IRQ_H */