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TOMOYO Linux Cross Reference
Linux/include/linux/irqdomain.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 /*
  3  * irq_domain - IRQ translation domains
  4  *
  5  * Translation infrastructure between hw and linux irq numbers.  This is
  6  * helpful for interrupt controllers to implement mapping between hardware
  7  * irq numbers and the Linux irq number space.
  8  *
  9  * irq_domains also have hooks for translating device tree or other
 10  * firmware interrupt representations into a hardware irq number that
 11  * can be mapped back to a Linux irq number without any extra platform
 12  * support code.
 13  *
 14  * Interrupt controller "domain" data structure. This could be defined as a
 15  * irq domain controller. That is, it handles the mapping between hardware
 16  * and virtual interrupt numbers for a given interrupt domain. The domain
 17  * structure is generally created by the PIC code for a given PIC instance
 18  * (though a domain can cover more than one PIC if they have a flat number
 19  * model). It's the domain callbacks that are responsible for setting the
 20  * irq_chip on a given irq_desc after it's been mapped.
 21  *
 22  * The host code and data structures use a fwnode_handle pointer to
 23  * identify the domain. In some cases, and in order to preserve source
 24  * code compatibility, this fwnode pointer is "upgraded" to a DT
 25  * device_node. For those firmware infrastructures that do not provide
 26  * a unique identifier for an interrupt controller, the irq_domain
 27  * code offers a fwnode allocator.
 28  */
 29 
 30 #ifndef _LINUX_IRQDOMAIN_H
 31 #define _LINUX_IRQDOMAIN_H
 32 
 33 #include <linux/types.h>
 34 #include <linux/irqhandler.h>
 35 #include <linux/of.h>
 36 #include <linux/mutex.h>
 37 #include <linux/radix-tree.h>
 38 
 39 struct device_node;
 40 struct irq_domain;
 41 struct of_device_id;
 42 struct irq_chip;
 43 struct irq_data;
 44 struct cpumask;
 45 struct seq_file;
 46 struct irq_affinity_desc;
 47 
 48 /* Number of irqs reserved for a legacy isa controller */
 49 #define NUM_ISA_INTERRUPTS      16
 50 
 51 #define IRQ_DOMAIN_IRQ_SPEC_PARAMS 16
 52 
 53 /**
 54  * struct irq_fwspec - generic IRQ specifier structure
 55  *
 56  * @fwnode:             Pointer to a firmware-specific descriptor
 57  * @param_count:        Number of device-specific parameters
 58  * @param:              Device-specific parameters
 59  *
 60  * This structure, directly modeled after of_phandle_args, is used to
 61  * pass a device-specific description of an interrupt.
 62  */
 63 struct irq_fwspec {
 64         struct fwnode_handle *fwnode;
 65         int param_count;
 66         u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS];
 67 };
 68 
 69 /*
 70  * Should several domains have the same device node, but serve
 71  * different purposes (for example one domain is for PCI/MSI, and the
 72  * other for wired IRQs), they can be distinguished using a
 73  * bus-specific token. Most domains are expected to only carry
 74  * DOMAIN_BUS_ANY.
 75  */
 76 enum irq_domain_bus_token {
 77         DOMAIN_BUS_ANY          = 0,
 78         DOMAIN_BUS_WIRED,
 79         DOMAIN_BUS_GENERIC_MSI,
 80         DOMAIN_BUS_PCI_MSI,
 81         DOMAIN_BUS_PLATFORM_MSI,
 82         DOMAIN_BUS_NEXUS,
 83         DOMAIN_BUS_IPI,
 84         DOMAIN_BUS_FSL_MC_MSI,
 85         DOMAIN_BUS_TI_SCI_INTA_MSI,
 86         DOMAIN_BUS_WAKEUP,
 87 };
 88 
 89 /**
 90  * struct irq_domain_ops - Methods for irq_domain objects
 91  * @match: Match an interrupt controller device node to a host, returns
 92  *         1 on a match
 93  * @map: Create or update a mapping between a virtual irq number and a hw
 94  *       irq number. This is called only once for a given mapping.
 95  * @unmap: Dispose of such a mapping
 96  * @xlate: Given a device tree node and interrupt specifier, decode
 97  *         the hardware irq number and linux irq type value.
 98  *
 99  * Functions below are provided by the driver and called whenever a new mapping
100  * is created or an old mapping is disposed. The driver can then proceed to
101  * whatever internal data structures management is required. It also needs
102  * to setup the irq_desc when returning from map().
103  */
104 struct irq_domain_ops {
105         int (*match)(struct irq_domain *d, struct device_node *node,
106                      enum irq_domain_bus_token bus_token);
107         int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec,
108                       enum irq_domain_bus_token bus_token);
109         int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw);
110         void (*unmap)(struct irq_domain *d, unsigned int virq);
111         int (*xlate)(struct irq_domain *d, struct device_node *node,
112                      const u32 *intspec, unsigned int intsize,
113                      unsigned long *out_hwirq, unsigned int *out_type);
114 #ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
115         /* extended V2 interfaces to support hierarchy irq_domains */
116         int (*alloc)(struct irq_domain *d, unsigned int virq,
117                      unsigned int nr_irqs, void *arg);
118         void (*free)(struct irq_domain *d, unsigned int virq,
119                      unsigned int nr_irqs);
120         int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve);
121         void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data);
122         int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec,
123                          unsigned long *out_hwirq, unsigned int *out_type);
124 #endif
125 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS
126         void (*debug_show)(struct seq_file *m, struct irq_domain *d,
127                            struct irq_data *irqd, int ind);
128 #endif
129 };
130 
131 extern struct irq_domain_ops irq_generic_chip_ops;
132 
133 struct irq_domain_chip_generic;
134 
135 /**
136  * struct irq_domain - Hardware interrupt number translation object
137  * @link: Element in global irq_domain list.
138  * @name: Name of interrupt domain
139  * @ops: pointer to irq_domain methods
140  * @host_data: private data pointer for use by owner.  Not touched by irq_domain
141  *             core code.
142  * @flags: host per irq_domain flags
143  * @mapcount: The number of mapped interrupts
144  *
145  * Optional elements
146  * @fwnode: Pointer to firmware node associated with the irq_domain. Pretty easy
147  *          to swap it for the of_node via the irq_domain_get_of_node accessor
148  * @gc: Pointer to a list of generic chips. There is a helper function for
149  *      setting up one or more generic chips for interrupt controllers
150  *      drivers using the generic chip library which uses this pointer.
151  * @parent: Pointer to parent irq_domain to support hierarchy irq_domains
152  * @debugfs_file: dentry for the domain debugfs file
153  *
154  * Revmap data, used internally by irq_domain
155  * @revmap_direct_max_irq: The largest hwirq that can be set for controllers that
156  *                         support direct mapping
157  * @revmap_size: Size of the linear map table @linear_revmap[]
158  * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map
159  * @linear_revmap: Linear table of hwirq->virq reverse mappings
160  */
161 struct irq_domain {
162         struct list_head link;
163         const char *name;
164         const struct irq_domain_ops *ops;
165         void *host_data;
166         unsigned int flags;
167         unsigned int mapcount;
168 
169         /* Optional data */
170         struct fwnode_handle *fwnode;
171         enum irq_domain_bus_token bus_token;
172         struct irq_domain_chip_generic *gc;
173 #ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
174         struct irq_domain *parent;
175 #endif
176 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS
177         struct dentry           *debugfs_file;
178 #endif
179 
180         /* reverse map data. The linear map gets appended to the irq_domain */
181         irq_hw_number_t hwirq_max;
182         unsigned int revmap_direct_max_irq;
183         unsigned int revmap_size;
184         struct radix_tree_root revmap_tree;
185         struct mutex revmap_tree_mutex;
186         unsigned int linear_revmap[];
187 };
188 
189 /* Irq domain flags */
190 enum {
191         /* Irq domain is hierarchical */
192         IRQ_DOMAIN_FLAG_HIERARCHY       = (1 << 0),
193 
194         /* Irq domain name was allocated in __irq_domain_add() */
195         IRQ_DOMAIN_NAME_ALLOCATED       = (1 << 1),
196 
197         /* Irq domain is an IPI domain with virq per cpu */
198         IRQ_DOMAIN_FLAG_IPI_PER_CPU     = (1 << 2),
199 
200         /* Irq domain is an IPI domain with single virq */
201         IRQ_DOMAIN_FLAG_IPI_SINGLE      = (1 << 3),
202 
203         /* Irq domain implements MSIs */
204         IRQ_DOMAIN_FLAG_MSI             = (1 << 4),
205 
206         /* Irq domain implements MSI remapping */
207         IRQ_DOMAIN_FLAG_MSI_REMAP       = (1 << 5),
208 
209         /*
210          * Quirk to handle MSI implementations which do not provide
211          * masking. Currently known to affect x86, but partially
212          * handled in core code.
213          */
214         IRQ_DOMAIN_MSI_NOMASK_QUIRK     = (1 << 6),
215 
216         /*
217          * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
218          * for implementation specific purposes and ignored by the
219          * core code.
220          */
221         IRQ_DOMAIN_FLAG_NONCORE         = (1 << 16),
222 };
223 
224 static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
225 {
226         return to_of_node(d->fwnode);
227 }
228 
229 #ifdef CONFIG_IRQ_DOMAIN
230 struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
231                                                 const char *name, phys_addr_t *pa);
232 
233 enum {
234         IRQCHIP_FWNODE_REAL,
235         IRQCHIP_FWNODE_NAMED,
236         IRQCHIP_FWNODE_NAMED_ID,
237 };
238 
239 static inline
240 struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name)
241 {
242         return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL);
243 }
244 
245 static inline
246 struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id)
247 {
248         return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name,
249                                          NULL);
250 }
251 
252 static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa)
253 {
254         return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa);
255 }
256 
257 void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
258 struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
259                                     irq_hw_number_t hwirq_max, int direct_max,
260                                     const struct irq_domain_ops *ops,
261                                     void *host_data);
262 struct irq_domain *irq_domain_add_simple(struct device_node *of_node,
263                                          unsigned int size,
264                                          unsigned int first_irq,
265                                          const struct irq_domain_ops *ops,
266                                          void *host_data);
267 struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
268                                          unsigned int size,
269                                          unsigned int first_irq,
270                                          irq_hw_number_t first_hwirq,
271                                          const struct irq_domain_ops *ops,
272                                          void *host_data);
273 extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
274                                                    enum irq_domain_bus_token bus_token);
275 extern bool irq_domain_check_msi_remap(void);
276 extern void irq_set_default_host(struct irq_domain *host);
277 extern struct irq_domain *irq_get_default_host(void);
278 extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs,
279                                   irq_hw_number_t hwirq, int node,
280                                   const struct irq_affinity_desc *affinity);
281 
282 static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
283 {
284         return node ? &node->fwnode : NULL;
285 }
286 
287 extern const struct fwnode_operations irqchip_fwnode_ops;
288 
289 static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode)
290 {
291         return fwnode && fwnode->ops == &irqchip_fwnode_ops;
292 }
293 
294 extern void irq_domain_update_bus_token(struct irq_domain *domain,
295                                         enum irq_domain_bus_token bus_token);
296 
297 static inline
298 struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
299                                             enum irq_domain_bus_token bus_token)
300 {
301         struct irq_fwspec fwspec = {
302                 .fwnode = fwnode,
303         };
304 
305         return irq_find_matching_fwspec(&fwspec, bus_token);
306 }
307 
308 static inline struct irq_domain *irq_find_matching_host(struct device_node *node,
309                                                         enum irq_domain_bus_token bus_token)
310 {
311         return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token);
312 }
313 
314 static inline struct irq_domain *irq_find_host(struct device_node *node)
315 {
316         struct irq_domain *d;
317 
318         d = irq_find_matching_host(node, DOMAIN_BUS_WIRED);
319         if (!d)
320                 d = irq_find_matching_host(node, DOMAIN_BUS_ANY);
321 
322         return d;
323 }
324 
325 /**
326  * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
327  * @of_node: pointer to interrupt controller's device tree node.
328  * @size: Number of interrupts in the domain.
329  * @ops: map/unmap domain callbacks
330  * @host_data: Controller private data pointer
331  */
332 static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
333                                          unsigned int size,
334                                          const struct irq_domain_ops *ops,
335                                          void *host_data)
336 {
337         return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data);
338 }
339 static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
340                                          unsigned int max_irq,
341                                          const struct irq_domain_ops *ops,
342                                          void *host_data)
343 {
344         return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data);
345 }
346 static inline struct irq_domain *irq_domain_add_legacy_isa(
347                                 struct device_node *of_node,
348                                 const struct irq_domain_ops *ops,
349                                 void *host_data)
350 {
351         return irq_domain_add_legacy(of_node, NUM_ISA_INTERRUPTS, 0, 0, ops,
352                                      host_data);
353 }
354 static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
355                                          const struct irq_domain_ops *ops,
356                                          void *host_data)
357 {
358         return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data);
359 }
360 
361 static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode,
362                                          unsigned int size,
363                                          const struct irq_domain_ops *ops,
364                                          void *host_data)
365 {
366         return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
367 }
368 
369 static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode,
370                                          const struct irq_domain_ops *ops,
371                                          void *host_data)
372 {
373         return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data);
374 }
375 
376 extern void irq_domain_remove(struct irq_domain *host);
377 
378 extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
379                                         irq_hw_number_t hwirq);
380 extern void irq_domain_associate_many(struct irq_domain *domain,
381                                       unsigned int irq_base,
382                                       irq_hw_number_t hwirq_base, int count);
383 extern void irq_domain_disassociate(struct irq_domain *domain,
384                                     unsigned int irq);
385 
386 extern unsigned int irq_create_mapping(struct irq_domain *host,
387                                        irq_hw_number_t hwirq);
388 extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
389 extern void irq_dispose_mapping(unsigned int virq);
390 
391 /**
392  * irq_linear_revmap() - Find a linux irq from a hw irq number.
393  * @domain: domain owning this hardware interrupt
394  * @hwirq: hardware irq number in that domain space
395  *
396  * This is a fast path alternative to irq_find_mapping() that can be
397  * called directly by irq controller code to save a handful of
398  * instructions. It is always safe to call, but won't find irqs mapped
399  * using the radix tree.
400  */
401 static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
402                                              irq_hw_number_t hwirq)
403 {
404         return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0;
405 }
406 extern unsigned int irq_find_mapping(struct irq_domain *host,
407                                      irq_hw_number_t hwirq);
408 extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
409 extern int irq_create_strict_mappings(struct irq_domain *domain,
410                                       unsigned int irq_base,
411                                       irq_hw_number_t hwirq_base, int count);
412 
413 static inline int irq_create_identity_mapping(struct irq_domain *host,
414                                               irq_hw_number_t hwirq)
415 {
416         return irq_create_strict_mappings(host, hwirq, hwirq, 1);
417 }
418 
419 extern const struct irq_domain_ops irq_domain_simple_ops;
420 
421 /* stock xlate functions */
422 int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr,
423                         const u32 *intspec, unsigned int intsize,
424                         irq_hw_number_t *out_hwirq, unsigned int *out_type);
425 int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr,
426                         const u32 *intspec, unsigned int intsize,
427                         irq_hw_number_t *out_hwirq, unsigned int *out_type);
428 int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
429                         const u32 *intspec, unsigned int intsize,
430                         irq_hw_number_t *out_hwirq, unsigned int *out_type);
431 
432 int irq_domain_translate_twocell(struct irq_domain *d,
433                                  struct irq_fwspec *fwspec,
434                                  unsigned long *out_hwirq,
435                                  unsigned int *out_type);
436 
437 int irq_domain_translate_onecell(struct irq_domain *d,
438                                  struct irq_fwspec *fwspec,
439                                  unsigned long *out_hwirq,
440                                  unsigned int *out_type);
441 
442 /* IPI functions */
443 int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
444 int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
445 
446 /* V2 interfaces to support hierarchy IRQ domains. */
447 extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
448                                                 unsigned int virq);
449 extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
450                                 irq_hw_number_t hwirq, struct irq_chip *chip,
451                                 void *chip_data, irq_flow_handler_t handler,
452                                 void *handler_data, const char *handler_name);
453 #ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
454 extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
455                         unsigned int flags, unsigned int size,
456                         struct fwnode_handle *fwnode,
457                         const struct irq_domain_ops *ops, void *host_data);
458 
459 static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
460                                             unsigned int flags,
461                                             unsigned int size,
462                                             struct device_node *node,
463                                             const struct irq_domain_ops *ops,
464                                             void *host_data)
465 {
466         return irq_domain_create_hierarchy(parent, flags, size,
467                                            of_node_to_fwnode(node),
468                                            ops, host_data);
469 }
470 
471 extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
472                                    unsigned int nr_irqs, int node, void *arg,
473                                    bool realloc,
474                                    const struct irq_affinity_desc *affinity);
475 extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
476 extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early);
477 extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
478 
479 static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
480                         unsigned int nr_irqs, int node, void *arg)
481 {
482         return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false,
483                                        NULL);
484 }
485 
486 extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
487                                            unsigned int irq_base,
488                                            unsigned int nr_irqs, void *arg);
489 extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
490                                          unsigned int virq,
491                                          irq_hw_number_t hwirq,
492                                          struct irq_chip *chip,
493                                          void *chip_data);
494 extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
495 extern void irq_domain_free_irqs_common(struct irq_domain *domain,
496                                         unsigned int virq,
497                                         unsigned int nr_irqs);
498 extern void irq_domain_free_irqs_top(struct irq_domain *domain,
499                                      unsigned int virq, unsigned int nr_irqs);
500 
501 extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg);
502 extern int irq_domain_pop_irq(struct irq_domain *domain, int virq);
503 
504 extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
505                                         unsigned int irq_base,
506                                         unsigned int nr_irqs, void *arg);
507 
508 extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
509                                         unsigned int irq_base,
510                                         unsigned int nr_irqs);
511 
512 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
513 {
514         return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
515 }
516 
517 static inline bool irq_domain_is_ipi(struct irq_domain *domain)
518 {
519         return domain->flags &
520                 (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE);
521 }
522 
523 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
524 {
525         return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU;
526 }
527 
528 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
529 {
530         return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE;
531 }
532 
533 static inline bool irq_domain_is_msi(struct irq_domain *domain)
534 {
535         return domain->flags & IRQ_DOMAIN_FLAG_MSI;
536 }
537 
538 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
539 {
540         return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP;
541 }
542 
543 extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain);
544 
545 #else   /* CONFIG_IRQ_DOMAIN_HIERARCHY */
546 static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
547                         unsigned int nr_irqs, int node, void *arg)
548 {
549         return -1;
550 }
551 
552 static inline void irq_domain_free_irqs(unsigned int virq,
553                                         unsigned int nr_irqs) { }
554 
555 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
556 {
557         return false;
558 }
559 
560 static inline bool irq_domain_is_ipi(struct irq_domain *domain)
561 {
562         return false;
563 }
564 
565 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
566 {
567         return false;
568 }
569 
570 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
571 {
572         return false;
573 }
574 
575 static inline bool irq_domain_is_msi(struct irq_domain *domain)
576 {
577         return false;
578 }
579 
580 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
581 {
582         return false;
583 }
584 
585 static inline bool
586 irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain)
587 {
588         return false;
589 }
590 #endif  /* CONFIG_IRQ_DOMAIN_HIERARCHY */
591 
592 #else /* CONFIG_IRQ_DOMAIN */
593 static inline void irq_dispose_mapping(unsigned int virq) { }
594 static inline struct irq_domain *irq_find_matching_fwnode(
595         struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token)
596 {
597         return NULL;
598 }
599 static inline bool irq_domain_check_msi_remap(void)
600 {
601         return false;
602 }
603 #endif /* !CONFIG_IRQ_DOMAIN */
604 
605 #endif /* _LINUX_IRQDOMAIN_H */
606 

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