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 fwnode_handle; 41 struct irq_domain; 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 DOMAIN_BUS_VMD_MSI, 88 }; 89 90 /** 91 * struct irq_domain_ops - Methods for irq_domain objects 92 * @match: Match an interrupt controller device node to a host, returns 93 * 1 on a match 94 * @map: Create or update a mapping between a virtual irq number and a hw 95 * irq number. This is called only once for a given mapping. 96 * @unmap: Dispose of such a mapping 97 * @xlate: Given a device tree node and interrupt specifier, decode 98 * the hardware irq number and linux irq type value. 99 * 100 * Functions below are provided by the driver and called whenever a new mapping 101 * is created or an old mapping is disposed. The driver can then proceed to 102 * whatever internal data structures management is required. It also needs 103 * to setup the irq_desc when returning from map(). 104 */ 105 struct irq_domain_ops { 106 int (*match)(struct irq_domain *d, struct device_node *node, 107 enum irq_domain_bus_token bus_token); 108 int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec, 109 enum irq_domain_bus_token bus_token); 110 int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw); 111 void (*unmap)(struct irq_domain *d, unsigned int virq); 112 int (*xlate)(struct irq_domain *d, struct device_node *node, 113 const u32 *intspec, unsigned int intsize, 114 unsigned long *out_hwirq, unsigned int *out_type); 115 #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 116 /* extended V2 interfaces to support hierarchy irq_domains */ 117 int (*alloc)(struct irq_domain *d, unsigned int virq, 118 unsigned int nr_irqs, void *arg); 119 void (*free)(struct irq_domain *d, unsigned int virq, 120 unsigned int nr_irqs); 121 int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve); 122 void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data); 123 int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec, 124 unsigned long *out_hwirq, unsigned int *out_type); 125 #endif 126 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS 127 void (*debug_show)(struct seq_file *m, struct irq_domain *d, 128 struct irq_data *irqd, int ind); 129 #endif 130 }; 131 132 extern struct irq_domain_ops irq_generic_chip_ops; 133 134 struct irq_domain_chip_generic; 135 136 /** 137 * struct irq_domain - Hardware interrupt number translation object 138 * @link: Element in global irq_domain list. 139 * @name: Name of interrupt domain 140 * @ops: pointer to irq_domain methods 141 * @host_data: private data pointer for use by owner. Not touched by irq_domain 142 * core code. 143 * @flags: host per irq_domain flags 144 * @mapcount: The number of mapped interrupts 145 * 146 * Optional elements 147 * @fwnode: Pointer to firmware node associated with the irq_domain. Pretty easy 148 * to swap it for the of_node via the irq_domain_get_of_node accessor 149 * @gc: Pointer to a list of generic chips. There is a helper function for 150 * setting up one or more generic chips for interrupt controllers 151 * drivers using the generic chip library which uses this pointer. 152 * @parent: Pointer to parent irq_domain to support hierarchy irq_domains 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 176 177 /* reverse map data. The linear map gets appended to the irq_domain */ 178 irq_hw_number_t hwirq_max; 179 unsigned int revmap_direct_max_irq; 180 unsigned int revmap_size; 181 struct radix_tree_root revmap_tree; 182 struct mutex revmap_tree_mutex; 183 unsigned int linear_revmap[]; 184 }; 185 186 /* Irq domain flags */ 187 enum { 188 /* Irq domain is hierarchical */ 189 IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0), 190 191 /* Irq domain name was allocated in __irq_domain_add() */ 192 IRQ_DOMAIN_NAME_ALLOCATED = (1 << 1), 193 194 /* Irq domain is an IPI domain with virq per cpu */ 195 IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2), 196 197 /* Irq domain is an IPI domain with single virq */ 198 IRQ_DOMAIN_FLAG_IPI_SINGLE = (1 << 3), 199 200 /* Irq domain implements MSIs */ 201 IRQ_DOMAIN_FLAG_MSI = (1 << 4), 202 203 /* Irq domain implements MSI remapping */ 204 IRQ_DOMAIN_FLAG_MSI_REMAP = (1 << 5), 205 206 /* 207 * Quirk to handle MSI implementations which do not provide 208 * masking. Currently known to affect x86, but partially 209 * handled in core code. 210 */ 211 IRQ_DOMAIN_MSI_NOMASK_QUIRK = (1 << 6), 212 213 /* 214 * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved 215 * for implementation specific purposes and ignored by the 216 * core code. 217 */ 218 IRQ_DOMAIN_FLAG_NONCORE = (1 << 16), 219 }; 220 221 static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d) 222 { 223 return to_of_node(d->fwnode); 224 } 225 226 #ifdef CONFIG_IRQ_DOMAIN 227 struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id, 228 const char *name, phys_addr_t *pa); 229 230 enum { 231 IRQCHIP_FWNODE_REAL, 232 IRQCHIP_FWNODE_NAMED, 233 IRQCHIP_FWNODE_NAMED_ID, 234 }; 235 236 static inline 237 struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name) 238 { 239 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL); 240 } 241 242 static inline 243 struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id) 244 { 245 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name, 246 NULL); 247 } 248 249 static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa) 250 { 251 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa); 252 } 253 254 void irq_domain_free_fwnode(struct fwnode_handle *fwnode); 255 struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, 256 irq_hw_number_t hwirq_max, int direct_max, 257 const struct irq_domain_ops *ops, 258 void *host_data); 259 struct irq_domain *irq_domain_add_simple(struct device_node *of_node, 260 unsigned int size, 261 unsigned int first_irq, 262 const struct irq_domain_ops *ops, 263 void *host_data); 264 struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, 265 unsigned int size, 266 unsigned int first_irq, 267 irq_hw_number_t first_hwirq, 268 const struct irq_domain_ops *ops, 269 void *host_data); 270 struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode, 271 unsigned int size, 272 unsigned int first_irq, 273 irq_hw_number_t first_hwirq, 274 const struct irq_domain_ops *ops, 275 void *host_data); 276 extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec, 277 enum irq_domain_bus_token bus_token); 278 extern bool irq_domain_check_msi_remap(void); 279 extern void irq_set_default_host(struct irq_domain *host); 280 extern struct irq_domain *irq_get_default_host(void); 281 extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs, 282 irq_hw_number_t hwirq, int node, 283 const struct irq_affinity_desc *affinity); 284 285 static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node) 286 { 287 return node ? &node->fwnode : NULL; 288 } 289 290 extern const struct fwnode_operations irqchip_fwnode_ops; 291 292 static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode) 293 { 294 return fwnode && fwnode->ops == &irqchip_fwnode_ops; 295 } 296 297 extern void irq_domain_update_bus_token(struct irq_domain *domain, 298 enum irq_domain_bus_token bus_token); 299 300 static inline 301 struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, 302 enum irq_domain_bus_token bus_token) 303 { 304 struct irq_fwspec fwspec = { 305 .fwnode = fwnode, 306 }; 307 308 return irq_find_matching_fwspec(&fwspec, bus_token); 309 } 310 311 static inline struct irq_domain *irq_find_matching_host(struct device_node *node, 312 enum irq_domain_bus_token bus_token) 313 { 314 return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token); 315 } 316 317 static inline struct irq_domain *irq_find_host(struct device_node *node) 318 { 319 struct irq_domain *d; 320 321 d = irq_find_matching_host(node, DOMAIN_BUS_WIRED); 322 if (!d) 323 d = irq_find_matching_host(node, DOMAIN_BUS_ANY); 324 325 return d; 326 } 327 328 /** 329 * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain. 330 * @of_node: pointer to interrupt controller's device tree node. 331 * @size: Number of interrupts in the domain. 332 * @ops: map/unmap domain callbacks 333 * @host_data: Controller private data pointer 334 */ 335 static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node, 336 unsigned int size, 337 const struct irq_domain_ops *ops, 338 void *host_data) 339 { 340 return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data); 341 } 342 static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node, 343 unsigned int max_irq, 344 const struct irq_domain_ops *ops, 345 void *host_data) 346 { 347 return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data); 348 } 349 static inline struct irq_domain *irq_domain_add_legacy_isa( 350 struct device_node *of_node, 351 const struct irq_domain_ops *ops, 352 void *host_data) 353 { 354 return irq_domain_add_legacy(of_node, NUM_ISA_INTERRUPTS, 0, 0, ops, 355 host_data); 356 } 357 static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node, 358 const struct irq_domain_ops *ops, 359 void *host_data) 360 { 361 return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data); 362 } 363 364 static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode, 365 unsigned int size, 366 const struct irq_domain_ops *ops, 367 void *host_data) 368 { 369 return __irq_domain_add(fwnode, size, size, 0, ops, host_data); 370 } 371 372 static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode, 373 const struct irq_domain_ops *ops, 374 void *host_data) 375 { 376 return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data); 377 } 378 379 extern void irq_domain_remove(struct irq_domain *host); 380 381 extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq, 382 irq_hw_number_t hwirq); 383 extern void irq_domain_associate_many(struct irq_domain *domain, 384 unsigned int irq_base, 385 irq_hw_number_t hwirq_base, int count); 386 387 extern unsigned int irq_create_mapping_affinity(struct irq_domain *host, 388 irq_hw_number_t hwirq, 389 const struct irq_affinity_desc *affinity); 390 extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec); 391 extern void irq_dispose_mapping(unsigned int virq); 392 393 static inline unsigned int irq_create_mapping(struct irq_domain *host, 394 irq_hw_number_t hwirq) 395 { 396 return irq_create_mapping_affinity(host, hwirq, NULL); 397 } 398 399 400 /** 401 * irq_linear_revmap() - Find a linux irq from a hw irq number. 402 * @domain: domain owning this hardware interrupt 403 * @hwirq: hardware irq number in that domain space 404 * 405 * This is a fast path alternative to irq_find_mapping() that can be 406 * called directly by irq controller code to save a handful of 407 * instructions. It is always safe to call, but won't find irqs mapped 408 * using the radix tree. 409 */ 410 static inline unsigned int irq_linear_revmap(struct irq_domain *domain, 411 irq_hw_number_t hwirq) 412 { 413 return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0; 414 } 415 extern unsigned int irq_find_mapping(struct irq_domain *host, 416 irq_hw_number_t hwirq); 417 extern unsigned int irq_create_direct_mapping(struct irq_domain *host); 418 extern int irq_create_strict_mappings(struct irq_domain *domain, 419 unsigned int irq_base, 420 irq_hw_number_t hwirq_base, int count); 421 422 static inline int irq_create_identity_mapping(struct irq_domain *host, 423 irq_hw_number_t hwirq) 424 { 425 return irq_create_strict_mappings(host, hwirq, hwirq, 1); 426 } 427 428 extern const struct irq_domain_ops irq_domain_simple_ops; 429 430 /* stock xlate functions */ 431 int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr, 432 const u32 *intspec, unsigned int intsize, 433 irq_hw_number_t *out_hwirq, unsigned int *out_type); 434 int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr, 435 const u32 *intspec, unsigned int intsize, 436 irq_hw_number_t *out_hwirq, unsigned int *out_type); 437 int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr, 438 const u32 *intspec, unsigned int intsize, 439 irq_hw_number_t *out_hwirq, unsigned int *out_type); 440 441 int irq_domain_translate_twocell(struct irq_domain *d, 442 struct irq_fwspec *fwspec, 443 unsigned long *out_hwirq, 444 unsigned int *out_type); 445 446 int irq_domain_translate_onecell(struct irq_domain *d, 447 struct irq_fwspec *fwspec, 448 unsigned long *out_hwirq, 449 unsigned int *out_type); 450 451 /* IPI functions */ 452 int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest); 453 int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest); 454 455 /* V2 interfaces to support hierarchy IRQ domains. */ 456 extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain, 457 unsigned int virq); 458 extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq, 459 irq_hw_number_t hwirq, struct irq_chip *chip, 460 void *chip_data, irq_flow_handler_t handler, 461 void *handler_data, const char *handler_name); 462 extern void irq_domain_reset_irq_data(struct irq_data *irq_data); 463 #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 464 extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent, 465 unsigned int flags, unsigned int size, 466 struct fwnode_handle *fwnode, 467 const struct irq_domain_ops *ops, void *host_data); 468 469 static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent, 470 unsigned int flags, 471 unsigned int size, 472 struct device_node *node, 473 const struct irq_domain_ops *ops, 474 void *host_data) 475 { 476 return irq_domain_create_hierarchy(parent, flags, size, 477 of_node_to_fwnode(node), 478 ops, host_data); 479 } 480 481 extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base, 482 unsigned int nr_irqs, int node, void *arg, 483 bool realloc, 484 const struct irq_affinity_desc *affinity); 485 extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs); 486 extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early); 487 extern void irq_domain_deactivate_irq(struct irq_data *irq_data); 488 489 static inline int irq_domain_alloc_irqs(struct irq_domain *domain, 490 unsigned int nr_irqs, int node, void *arg) 491 { 492 return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false, 493 NULL); 494 } 495 496 extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain, 497 unsigned int irq_base, 498 unsigned int nr_irqs, void *arg); 499 extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, 500 unsigned int virq, 501 irq_hw_number_t hwirq, 502 struct irq_chip *chip, 503 void *chip_data); 504 extern void irq_domain_free_irqs_common(struct irq_domain *domain, 505 unsigned int virq, 506 unsigned int nr_irqs); 507 extern void irq_domain_free_irqs_top(struct irq_domain *domain, 508 unsigned int virq, unsigned int nr_irqs); 509 510 extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg); 511 extern int irq_domain_pop_irq(struct irq_domain *domain, int virq); 512 513 extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain, 514 unsigned int irq_base, 515 unsigned int nr_irqs, void *arg); 516 517 extern void irq_domain_free_irqs_parent(struct irq_domain *domain, 518 unsigned int irq_base, 519 unsigned int nr_irqs); 520 521 extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain, 522 unsigned int virq); 523 524 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) 525 { 526 return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY; 527 } 528 529 static inline bool irq_domain_is_ipi(struct irq_domain *domain) 530 { 531 return domain->flags & 532 (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE); 533 } 534 535 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) 536 { 537 return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU; 538 } 539 540 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) 541 { 542 return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE; 543 } 544 545 static inline bool irq_domain_is_msi(struct irq_domain *domain) 546 { 547 return domain->flags & IRQ_DOMAIN_FLAG_MSI; 548 } 549 550 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain) 551 { 552 return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP; 553 } 554 555 extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain); 556 557 #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 558 static inline int irq_domain_alloc_irqs(struct irq_domain *domain, 559 unsigned int nr_irqs, int node, void *arg) 560 { 561 return -1; 562 } 563 564 static inline void irq_domain_free_irqs(unsigned int virq, 565 unsigned int nr_irqs) { } 566 567 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) 568 { 569 return false; 570 } 571 572 static inline bool irq_domain_is_ipi(struct irq_domain *domain) 573 { 574 return false; 575 } 576 577 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) 578 { 579 return false; 580 } 581 582 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) 583 { 584 return false; 585 } 586 587 static inline bool irq_domain_is_msi(struct irq_domain *domain) 588 { 589 return false; 590 } 591 592 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain) 593 { 594 return false; 595 } 596 597 static inline bool 598 irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain) 599 { 600 return false; 601 } 602 #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 603 604 #else /* CONFIG_IRQ_DOMAIN */ 605 static inline void irq_dispose_mapping(unsigned int virq) { } 606 static inline struct irq_domain *irq_find_matching_fwnode( 607 struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) 608 { 609 return NULL; 610 } 611 static inline bool irq_domain_check_msi_remap(void) 612 { 613 return false; 614 } 615 #endif /* !CONFIG_IRQ_DOMAIN */ 616 617 #endif /* _LINUX_IRQDOMAIN_H */ 618