include/linux/irqdomain.h

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