include/linux/irq.h

   1 #ifndef _LINUX_IRQ_H
   2 #define _LINUX_IRQ_H
   3
   4 /*
   5  * Please do not include this file in generic code.  There is currently
   6  * no requirement for any architecture to implement anything held
   7  * within this file.
   8  *
   9  * Thanks. --rmk
  10  */
  11
  12 #include <linux/smp.h>
  13
  14 #ifndef CONFIG_S390
  15
  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>
  26
  27 #include <asm/irq.h>
  28 #include <asm/ptrace.h>
  29 #include <asm/irq_regs.h>
  30
  31 struct irq_desc;
  32 struct irq_data;
  33 typedef void (*irq_flow_handler_t)(unsigned int irq,
  34                                             struct irq_desc *desc);
  35 typedef void (*irq_preflow_handler_t)(struct irq_data *data);
  36
  37 /*
  38  * IRQ line status.
  39  *
  40  * Bits 0-7 are the same as the IRQF_* bits in linux/interrupt.h
  41  *
  42  * IRQ_TYPE_NONE                - default, unspecified type
  43  * IRQ_TYPE_EDGE_RISING         - rising edge triggered
  44  * IRQ_TYPE_EDGE_FALLING        - falling edge triggered
  45  * IRQ_TYPE_EDGE_BOTH           - rising and falling edge triggered
  46  * IRQ_TYPE_LEVEL_HIGH          - high level triggered
  47  * IRQ_TYPE_LEVEL_LOW           - low level triggered
  48  * IRQ_TYPE_LEVEL_MASK          - Mask to filter out the level bits
  49  * IRQ_TYPE_SENSE_MASK          - Mask for all the above bits
  50  * IRQ_TYPE_PROBE               - Special flag for probing in progress
  51  *
  52  * Bits which can be modified via irq_set/clear/modify_status_flags()
  53  * IRQ_LEVEL                    - Interrupt is level type. Will be also
  54  *                                updated in the code when the above trigger
  55  *                                bits are modified via set_irq_type()
  56  * IRQ_PER_CPU                  - Mark an interrupt PER_CPU. Will protect
  57  *                                it from affinity setting
  58  * IRQ_NOPROBE                  - Interrupt cannot be probed by autoprobing
  59  * IRQ_NOREQUEST                - Interrupt cannot be requested via
  60  *                                request_irq()
  61  * IRQ_NOAUTOEN                 - Interrupt is not automatically enabled in
  62  *                                request/setup_irq()
  63  * IRQ_NO_BALANCING             - Interrupt cannot be balanced (affinity set)
  64  * IRQ_MOVE_PCNTXT              - Interrupt can be migrated from process context
  65  * IRQ_NESTED_TRHEAD            - Interrupt nests into another thread
  66  *
  67  * Deprecated bits. They are kept updated as long as
  68  * CONFIG_GENERIC_HARDIRQS_NO_COMPAT is not set. Will go away soon. These bits
  69  * are internal state of the core code and if you really need to acces
  70  * them then talk to the genirq maintainer instead of hacking
  71  * something weird.
  72  *
  73  */
  74 enum {
  75         IRQ_TYPE_NONE           = 0x00000000,
  76         IRQ_TYPE_EDGE_RISING    = 0x00000001,
  77         IRQ_TYPE_EDGE_FALLING   = 0x00000002,
  78         IRQ_TYPE_EDGE_BOTH      = (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING),
  79         IRQ_TYPE_LEVEL_HIGH     = 0x00000004,
  80         IRQ_TYPE_LEVEL_LOW      = 0x00000008,
  81         IRQ_TYPE_LEVEL_MASK     = (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH),
  82         IRQ_TYPE_SENSE_MASK     = 0x0000000f,
  83
  84         IRQ_TYPE_PROBE          = 0x00000010,
  85
  86         IRQ_LEVEL               = (1 <<  8),
  87         IRQ_PER_CPU             = (1 <<  9),
  88         IRQ_NOPROBE             = (1 << 10),
  89         IRQ_NOREQUEST           = (1 << 11),
  90         IRQ_NOAUTOEN            = (1 << 12),
  91         IRQ_NO_BALANCING        = (1 << 13),
  92         IRQ_MOVE_PCNTXT         = (1 << 14),
  93         IRQ_NESTED_THREAD       = (1 << 15),
  94
  95 #ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT
  96         IRQ_INPROGRESS          = (1 << 16),
  97         IRQ_REPLAY              = (1 << 17),
  98         IRQ_WAITING             = (1 << 18),
  99         IRQ_DISABLED            = (1 << 19),
 100         IRQ_PENDING             = (1 << 20),
 101         IRQ_MASKED              = (1 << 21),
 102         IRQ_MOVE_PENDING        = (1 << 22),
 103         IRQ_AFFINITY_SET        = (1 << 23),
 104         IRQ_WAKEUP              = (1 << 24),
 105 #endif
 106 };
 107
 108 #define IRQF_MODIFY_MASK        \
 109         (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \
 110          IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \
 111          IRQ_PER_CPU | IRQ_NESTED_THREAD)
 112
 113 #define IRQ_NO_BALANCING_MASK   (IRQ_PER_CPU | IRQ_NO_BALANCING)
 114
 115 static inline __deprecated bool CHECK_IRQ_PER_CPU(unsigned int status)
 116 {
 117         return status & IRQ_PER_CPU;
 118 }
 119
 120 /*
 121  * Return value for chip->irq_set_affinity()
 122  *
 123  * IRQ_SET_MASK_OK      - OK, core updates irq_data.affinity
 124  * IRQ_SET_MASK_NOCPY   - OK, chip did update irq_data.affinity
 125  */
 126 enum {
 127         IRQ_SET_MASK_OK = 0,
 128         IRQ_SET_MASK_OK_NOCOPY,
 129 };
 130
 131 struct msi_desc;
 132
 133 /**
 134  * struct irq_data - per irq and irq chip data passed down to chip functions
 135  * @irq:                interrupt number
 136  * @node:               node index useful for balancing
 137  * @state_use_accessor: status information for irq chip functions.
 138  *                      Use accessor functions to deal with it
 139  * @chip:               low level interrupt hardware access
 140  * @handler_data:       per-IRQ data for the irq_chip methods
 141  * @chip_data:          platform-specific per-chip private data for the chip
 142  *                      methods, to allow shared chip implementations
 143  * @msi_desc:           MSI descriptor
 144  * @affinity:           IRQ affinity on SMP
 145  *
 146  * The fields here need to overlay the ones in irq_desc until we
 147  * cleaned up the direct references and switched everything over to
 148  * irq_data.
 149  */
 150 struct irq_data {
 151         unsigned int            irq;
 152         unsigned int            node;
 153         unsigned int            state_use_accessors;
 154         struct irq_chip         *chip;
 155         void                    *handler_data;
 156         void                    *chip_data;
 157         struct msi_desc         *msi_desc;
 158 #ifdef CONFIG_SMP
 159         cpumask_var_t           affinity;
 160 #endif
 161 };
 162
 163 /*
 164  * Bit masks for irq_data.state
 165  *
 166  * IRQD_TRIGGER_MASK            - Mask for the trigger type bits
 167  * IRQD_SETAFFINITY_PENDING     - Affinity setting is pending
 168  * IRQD_NO_BALANCING            - Balancing disabled for this IRQ
 169  * IRQD_PER_CPU                 - Interrupt is per cpu
 170  * IRQD_AFFINITY_SET            - Interrupt affinity was set
 171  * IRQD_LEVEL                   - Interrupt is level triggered
 172  * IRQD_WAKEUP_STATE            - Interrupt is configured for wakeup
 173  *                                from suspend
 174  * IRDQ_MOVE_PCNTXT             - Interrupt can be moved in process
 175  *                                context
 176  */
 177 enum {
 178         IRQD_TRIGGER_MASK               = 0xf,
 179         IRQD_SETAFFINITY_PENDING        = (1 <<  8),
 180         IRQD_NO_BALANCING               = (1 << 10),
 181         IRQD_PER_CPU                    = (1 << 11),
 182         IRQD_AFFINITY_SET               = (1 << 12),
 183         IRQD_LEVEL                      = (1 << 13),
 184         IRQD_WAKEUP_STATE               = (1 << 14),
 185         IRQD_MOVE_PCNTXT                = (1 << 15),
 186 };
 187
 188 static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
 189 {
 190         return d->state_use_accessors & IRQD_SETAFFINITY_PENDING;
 191 }
 192
 193 static inline bool irqd_is_per_cpu(struct irq_data *d)
 194 {
 195         return d->state_use_accessors & IRQD_PER_CPU;
 196 }
 197
 198 static inline bool irqd_can_balance(struct irq_data *d)
 199 {
 200         return !(d->state_use_accessors & (IRQD_PER_CPU | IRQD_NO_BALANCING));
 201 }
 202
 203 static inline bool irqd_affinity_was_set(struct irq_data *d)
 204 {
 205         return d->state_use_accessors & IRQD_AFFINITY_SET;
 206 }
 207
 208 static inline u32 irqd_get_trigger_type(struct irq_data *d)
 209 {
 210         return d->state_use_accessors & IRQD_TRIGGER_MASK;
 211 }
 212
 213 /*
 214  * Must only be called inside irq_chip.irq_set_type() functions.
 215  */
 216 static inline void irqd_set_trigger_type(struct irq_data *d, u32 type)
 217 {
 218         d->state_use_accessors &= ~IRQD_TRIGGER_MASK;
 219         d->state_use_accessors |= type & IRQD_TRIGGER_MASK;
 220 }
 221
 222 static inline bool irqd_is_level_type(struct irq_data *d)
 223 {
 224         return d->state_use_accessors & IRQD_LEVEL;
 225 }
 226
 227 static inline bool irqd_is_wakeup_set(struct irq_data *d)
 228 {
 229         return d->state_use_accessors & IRQD_WAKEUP_STATE;
 230 }
 231
 232 static inline bool irqd_can_move_in_process_context(struct irq_data *d)
 233 {
 234         return d->state_use_accessors & IRQD_MOVE_PCNTXT;
 235 }
 236
 237 /**
 238  * struct irq_chip - hardware interrupt chip descriptor
 239  *
 240  * @name:               name for /proc/interrupts
 241  * @startup:            deprecated, replaced by irq_startup
 242  * @shutdown:           deprecated, replaced by irq_shutdown
 243  * @enable:             deprecated, replaced by irq_enable
 244  * @disable:            deprecated, replaced by irq_disable
 245  * @ack:                deprecated, replaced by irq_ack
 246  * @mask:               deprecated, replaced by irq_mask
 247  * @mask_ack:           deprecated, replaced by irq_mask_ack
 248  * @unmask:             deprecated, replaced by irq_unmask
 249  * @eoi:                deprecated, replaced by irq_eoi
 250  * @end:                deprecated, will go away with __do_IRQ()
 251  * @set_affinity:       deprecated, replaced by irq_set_affinity
 252  * @retrigger:          deprecated, replaced by irq_retrigger
 253  * @set_type:           deprecated, replaced by irq_set_type
 254  * @set_wake:           deprecated, replaced by irq_wake
 255  * @bus_lock:           deprecated, replaced by irq_bus_lock
 256  * @bus_sync_unlock:    deprecated, replaced by irq_bus_sync_unlock
 257  *
 258  * @irq_startup:        start up the interrupt (defaults to ->enable if NULL)
 259  * @irq_shutdown:       shut down the interrupt (defaults to ->disable if NULL)
 260  * @irq_enable:         enable the interrupt (defaults to chip->unmask if NULL)
 261  * @irq_disable:        disable the interrupt
 262  * @irq_ack:            start of a new interrupt
 263  * @irq_mask:           mask an interrupt source
 264  * @irq_mask_ack:       ack and mask an interrupt source
 265  * @irq_unmask:         unmask an interrupt source
 266  * @irq_eoi:            end of interrupt
 267  * @irq_set_affinity:   set the CPU affinity on SMP machines
 268  * @irq_retrigger:      resend an IRQ to the CPU
 269  * @irq_set_type:       set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ
 270  * @irq_set_wake:       enable/disable power-management wake-on of an IRQ
 271  * @irq_bus_lock:       function to lock access to slow bus (i2c) chips
 272  * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips
 273  * @flags:              chip specific flags
 274  *
 275  * @release:            release function solely used by UML
 276  */
 277 struct irq_chip {
 278         const char      *name;
 279 #ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
 280         unsigned int    (*startup)(unsigned int irq);
 281         void            (*shutdown)(unsigned int irq);
 282         void            (*enable)(unsigned int irq);
 283         void            (*disable)(unsigned int irq);
 284
 285         void            (*ack)(unsigned int irq);
 286         void            (*mask)(unsigned int irq);
 287         void            (*mask_ack)(unsigned int irq);
 288         void            (*unmask)(unsigned int irq);
 289         void            (*eoi)(unsigned int irq);
 290
 291         void            (*end)(unsigned int irq);
 292         int             (*set_affinity)(unsigned int irq,
 293                                         const struct cpumask *dest);
 294         int             (*retrigger)(unsigned int irq);
 295         int             (*set_type)(unsigned int irq, unsigned int flow_type);
 296         int             (*set_wake)(unsigned int irq, unsigned int on);
 297
 298         void            (*bus_lock)(unsigned int irq);
 299         void            (*bus_sync_unlock)(unsigned int irq);
 300 #endif
 301         unsigned int    (*irq_startup)(struct irq_data *data);
 302         void            (*irq_shutdown)(struct irq_data *data);
 303         void            (*irq_enable)(struct irq_data *data);
 304         void            (*irq_disable)(struct irq_data *data);
 305
 306         void            (*irq_ack)(struct irq_data *data);
 307         void            (*irq_mask)(struct irq_data *data);
 308         void            (*irq_mask_ack)(struct irq_data *data);
 309         void            (*irq_unmask)(struct irq_data *data);
 310         void            (*irq_eoi)(struct irq_data *data);
 311
 312         int             (*irq_set_affinity)(struct irq_data *data, const struct cpumask *dest, bool force);
 313         int             (*irq_retrigger)(struct irq_data *data);
 314         int             (*irq_set_type)(struct irq_data *data, unsigned int flow_type);
 315         int             (*irq_set_wake)(struct irq_data *data, unsigned int on);
 316
 317         void            (*irq_bus_lock)(struct irq_data *data);
 318         void            (*irq_bus_sync_unlock)(struct irq_data *data);
 319
 320         unsigned long   flags;
 321
 322         /* Currently used only by UML, might disappear one day.*/
 323 #ifdef CONFIG_IRQ_RELEASE_METHOD
 324         void            (*release)(unsigned int irq, void *dev_id);
 325 #endif
 326 };
 327
 328 /*
 329  * irq_chip specific flags
 330  *
 331  * IRQCHIP_SET_TYPE_MASKED:     Mask before calling chip.irq_set_type()
 332  * IRQCHIP_EOI_IF_HANDLED:      Only issue irq_eoi() when irq was handled
 333  * IRQCHIP_MASK_ON_SUSPEND:     Mask non wake irqs in the suspend path
 334  */
 335 enum {
 336         IRQCHIP_SET_TYPE_MASKED         = (1 <<  0),
 337         IRQCHIP_EOI_IF_HANDLED          = (1 <<  1),
 338         IRQCHIP_MASK_ON_SUSPEND         = (1 <<  2),
 339 };
 340
 341 /* This include will go away once we isolated irq_desc usage to core code */
 342 #include <linux/irqdesc.h>
 343
 344 /*
 345  * Pick up the arch-dependent methods:
 346  */
 347 #include <asm/hw_irq.h>
 348
 349 #ifndef NR_IRQS_LEGACY
 350 # define NR_IRQS_LEGACY 0
 351 #endif
 352
 353 #ifndef ARCH_IRQ_INIT_FLAGS
 354 # define ARCH_IRQ_INIT_FLAGS    0
 355 #endif
 356
 357 #define IRQ_DEFAULT_INIT_FLAGS  ARCH_IRQ_INIT_FLAGS
 358
 359 struct irqaction;
 360 extern int setup_irq(unsigned int irq, struct irqaction *new);
 361 extern void remove_irq(unsigned int irq, struct irqaction *act);
 362
 363 #ifdef CONFIG_GENERIC_HARDIRQS
 364
 365 #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ)
 366 void move_native_irq(int irq);
 367 void move_masked_irq(int irq);
 368 void irq_move_irq(struct irq_data *data);
 369 void irq_move_masked_irq(struct irq_data *data);
 370 #else
 371 static inline void move_native_irq(int irq) { }
 372 static inline void move_masked_irq(int irq) { }
 373 static inline void irq_move_irq(struct irq_data *data) { }
 374 static inline void irq_move_masked_irq(struct irq_data *data) { }
 375 #endif
 376
 377 extern int no_irq_affinity;
 378
 379 /* Handle irq action chains: */
 380 extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action);
 381
 382 /*
 383  * Built-in IRQ handlers for various IRQ types,
 384  * callable via desc->handle_irq()
 385  */
 386 extern void handle_level_irq(unsigned int irq, struct irq_desc *desc);
 387 extern void handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc);
 388 extern void handle_edge_irq(unsigned int irq, struct irq_desc *desc);
 389 extern void handle_simple_irq(unsigned int irq, struct irq_desc *desc);
 390 extern void handle_percpu_irq(unsigned int irq, struct irq_desc *desc);
 391 extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc);
 392 extern void handle_nested_irq(unsigned int irq);
 393
 394 /* Handling of unhandled and spurious interrupts: */
 395 extern void note_interrupt(unsigned int irq, struct irq_desc *desc,
 396                            irqreturn_t action_ret);
 397
 398
 399 /* Enable/disable irq debugging output: */
 400 extern int noirqdebug_setup(char *str);
 401
 402 /* Checks whether the interrupt can be requested by request_irq(): */
 403 extern int can_request_irq(unsigned int irq, unsigned long irqflags);
 404
 405 /* Dummy irq-chip implementations: */
 406 extern struct irq_chip no_irq_chip;
 407 extern struct irq_chip dummy_irq_chip;
 408
 409 extern void
 410 irq_set_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
 411                               irq_flow_handler_t handle, const char *name);
 412
 413 static inline void irq_set_chip_and_handler(unsigned int irq, struct irq_chip *chip,
 414                                             irq_flow_handler_t handle)
 415 {
 416         irq_set_chip_and_handler_name(irq, chip, handle, NULL);
 417 }
 418
 419 extern void
 420 __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
 421                   const char *name);
 422
 423 static inline void
 424 irq_set_handler(unsigned int irq, irq_flow_handler_t handle)
 425 {
 426         __irq_set_handler(irq, handle, 0, NULL);
 427 }
 428
 429 /*
 430  * Set a highlevel chained flow handler for a given IRQ.
 431  * (a chained handler is automatically enabled and set to
 432  *  IRQ_NOREQUEST and IRQ_NOPROBE)
 433  */
 434 static inline void
 435 irq_set_chained_handler(unsigned int irq, irq_flow_handler_t handle)
 436 {
 437         __irq_set_handler(irq, handle, 1, NULL);
 438 }
 439
 440 void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set);
 441
 442 static inline void irq_set_status_flags(unsigned int irq, unsigned long set)
 443 {
 444         irq_modify_status(irq, 0, set);
 445 }
 446
 447 static inline void irq_clear_status_flags(unsigned int irq, unsigned long clr)
 448 {
 449         irq_modify_status(irq, clr, 0);
 450 }
 451
 452 static inline void irq_set_noprobe(unsigned int irq)
 453 {
 454         irq_modify_status(irq, 0, IRQ_NOPROBE);
 455 }
 456
 457 static inline void irq_set_probe(unsigned int irq)
 458 {
 459         irq_modify_status(irq, IRQ_NOPROBE, 0);
 460 }
 461
 462 static inline void irq_set_nested_thread(unsigned int irq, bool nest)
 463 {
 464         if (nest)
 465                 irq_set_status_flags(irq, IRQ_NESTED_THREAD);
 466         else
 467                 irq_clear_status_flags(irq, IRQ_NESTED_THREAD);
 468 }
 469
 470 /* Handle dynamic irq creation and destruction */
 471 extern unsigned int create_irq_nr(unsigned int irq_want, int node);
 472 extern int create_irq(void);
 473 extern void destroy_irq(unsigned int irq);
 474
 475 /*
 476  * Dynamic irq helper functions. Obsolete. Use irq_alloc_desc* and
 477  * irq_free_desc instead.
 478  */
 479 extern void dynamic_irq_cleanup(unsigned int irq);
 480 static inline void dynamic_irq_init(unsigned int irq)
 481 {
 482         dynamic_irq_cleanup(irq);
 483 }
 484
 485 /* Set/get chip/data for an IRQ: */
 486 extern int irq_set_chip(unsigned int irq, struct irq_chip *chip);
 487 extern int irq_set_handler_data(unsigned int irq, void *data);
 488 extern int irq_set_chip_data(unsigned int irq, void *data);
 489 extern int irq_set_irq_type(unsigned int irq, unsigned int type);
 490 extern int irq_set_msi_desc(unsigned int irq, struct msi_desc *entry);
 491 extern struct irq_data *irq_get_irq_data(unsigned int irq);
 492
 493 static inline struct irq_chip *irq_get_chip(unsigned int irq)
 494 {
 495         struct irq_data *d = irq_get_irq_data(irq);
 496         return d ? d->chip : NULL;
 497 }
 498
 499 static inline struct irq_chip *irq_data_get_irq_chip(struct irq_data *d)
 500 {
 501         return d->chip;
 502 }
 503
 504 static inline void *irq_get_chip_data(unsigned int irq)
 505 {
 506         struct irq_data *d = irq_get_irq_data(irq);
 507         return d ? d->chip_data : NULL;
 508 }
 509
 510 static inline void *irq_data_get_irq_chip_data(struct irq_data *d)
 511 {
 512         return d->chip_data;
 513 }
 514
 515 static inline void *irq_get_handler_data(unsigned int irq)
 516 {
 517         struct irq_data *d = irq_get_irq_data(irq);
 518         return d ? d->handler_data : NULL;
 519 }
 520
 521 static inline void *irq_data_get_irq_handler_data(struct irq_data *d)
 522 {
 523         return d->handler_data;
 524 }
 525
 526 static inline struct msi_desc *irq_get_msi_desc(unsigned int irq)
 527 {
 528         struct irq_data *d = irq_get_irq_data(irq);
 529         return d ? d->msi_desc : NULL;
 530 }
 531
 532 static inline struct msi_desc *irq_data_get_msi(struct irq_data *d)
 533 {
 534         return d->msi_desc;
 535 }
 536
 537 #ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT
 538 /* Please do not use: Use the replacement functions instead */
 539 static inline int set_irq_chip(unsigned int irq, struct irq_chip *chip)
 540 {
 541         return irq_set_chip(irq, chip);
 542 }
 543 static inline int set_irq_data(unsigned int irq, void *data)
 544 {
 545         return irq_set_handler_data(irq, data);
 546 }
 547 static inline int set_irq_chip_data(unsigned int irq, void *data)
 548 {
 549         return irq_set_chip_data(irq, data);
 550 }
 551 static inline int set_irq_type(unsigned int irq, unsigned int type)
 552 {
 553         return irq_set_irq_type(irq, type);
 554 }
 555 static inline int set_irq_msi(unsigned int irq, struct msi_desc *entry)
 556 {
 557         return irq_set_msi_desc(irq, entry);
 558 }
 559 static inline struct irq_chip *get_irq_chip(unsigned int irq)
 560 {
 561         return irq_get_chip(irq);
 562 }
 563 static inline void *get_irq_chip_data(unsigned int irq)
 564 {
 565         return irq_get_chip_data(irq);
 566 }
 567 static inline void *get_irq_data(unsigned int irq)
 568 {
 569         return irq_get_handler_data(irq);
 570 }
 571 static inline void *irq_data_get_irq_data(struct irq_data *d)
 572 {
 573         return irq_data_get_irq_handler_data(d);
 574 }
 575 static inline struct msi_desc *get_irq_msi(unsigned int irq)
 576 {
 577         return irq_get_msi_desc(irq);
 578 }
 579 static inline void set_irq_noprobe(unsigned int irq)
 580 {
 581         irq_set_noprobe(irq);
 582 }
 583 static inline void set_irq_probe(unsigned int irq)
 584 {
 585         irq_set_probe(irq);
 586 }
 587 static inline void set_irq_nested_thread(unsigned int irq, int nest)
 588 {
 589         irq_set_nested_thread(irq, nest);
 590 }
 591 static inline void
 592 set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
 593                               irq_flow_handler_t handle, const char *name)
 594 {
 595         irq_set_chip_and_handler_name(irq, chip, handle, name);
 596 }
 597 static inline void
 598 set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip,
 599                          irq_flow_handler_t handle)
 600 {
 601         irq_set_chip_and_handler(irq, chip, handle);
 602 }
 603 static inline void
 604 __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
 605                   const char *name)
 606 {
 607         __irq_set_handler(irq, handle, is_chained, name);
 608 }
 609 static inline void set_irq_handler(unsigned int irq, irq_flow_handler_t handle)
 610 {
 611         irq_set_handler(irq, handle);
 612 }
 613 static inline void
 614 set_irq_chained_handler(unsigned int irq, irq_flow_handler_t handle)
 615 {
 616         irq_set_chained_handler(irq, handle);
 617 }
 618 #endif
 619
 620 int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node);
 621 void irq_free_descs(unsigned int irq, unsigned int cnt);
 622 int irq_reserve_irqs(unsigned int from, unsigned int cnt);
 623
 624 static inline int irq_alloc_desc(int node)
 625 {
 626         return irq_alloc_descs(-1, 0, 1, node);
 627 }
 628
 629 static inline int irq_alloc_desc_at(unsigned int at, int node)
 630 {
 631         return irq_alloc_descs(at, at, 1, node);
 632 }
 633
 634 static inline int irq_alloc_desc_from(unsigned int from, int node)
 635 {
 636         return irq_alloc_descs(-1, from, 1, node);
 637 }
 638
 639 static inline void irq_free_desc(unsigned int irq)
 640 {
 641         irq_free_descs(irq, 1);
 642 }
 643
 644 static inline int irq_reserve_irq(unsigned int irq)
 645 {
 646         return irq_reserve_irqs(irq, 1);
 647 }
 648
 649 #endif /* CONFIG_GENERIC_HARDIRQS */
 650
 651 #endif /* !CONFIG_S390 */
 652
 653 #endif /* _LINUX_IRQ_H */