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 irq_desc; 45 struct cpumask; 46 struct seq_file; 47 struct irq_affinity_desc; 48 49 #define IRQ_DOMAIN_IRQ_SPEC_PARAMS 16 50 51 /** 52 * struct irq_fwspec - generic IRQ specifier structure 53 * 54 * @fwnode: Pointer to a firmware-specific descriptor 55 * @param_count: Number of device-specific parameters 56 * @param: Device-specific parameters 57 * 58 * This structure, directly modeled after of_phandle_args, is used to 59 * pass a device-specific description of an interrupt. 60 */ 61 struct irq_fwspec { 62 struct fwnode_handle *fwnode; 63 int param_count; 64 u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS]; 65 }; 66 67 /* Conversion function from of_phandle_args fields to fwspec */ 68 void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, 69 unsigned int count, struct irq_fwspec *fwspec); 70 71 /* 72 * Should several domains have the same device node, but serve 73 * different purposes (for example one domain is for PCI/MSI, and the 74 * other for wired IRQs), they can be distinguished using a 75 * bus-specific token. Most domains are expected to only carry 76 * DOMAIN_BUS_ANY. 77 */ 78 enum irq_domain_bus_token { 79 DOMAIN_BUS_ANY = 0, 80 DOMAIN_BUS_WIRED, 81 DOMAIN_BUS_GENERIC_MSI, 82 DOMAIN_BUS_PCI_MSI, 83 DOMAIN_BUS_PLATFORM_MSI, 84 DOMAIN_BUS_NEXUS, 85 DOMAIN_BUS_IPI, 86 DOMAIN_BUS_FSL_MC_MSI, 87 DOMAIN_BUS_TI_SCI_INTA_MSI, 88 DOMAIN_BUS_WAKEUP, 89 DOMAIN_BUS_VMD_MSI, 90 }; 91 92 /** 93 * struct irq_domain_ops - Methods for irq_domain objects 94 * @match: Match an interrupt controller device node to a host, returns 95 * 1 on a match 96 * @map: Create or update a mapping between a virtual irq number and a hw 97 * irq number. This is called only once for a given mapping. 98 * @unmap: Dispose of such a mapping 99 * @xlate: Given a device tree node and interrupt specifier, decode 100 * the hardware irq number and linux irq type value. 101 * 102 * Functions below are provided by the driver and called whenever a new mapping 103 * is created or an old mapping is disposed. The driver can then proceed to 104 * whatever internal data structures management is required. It also needs 105 * to setup the irq_desc when returning from map(). 106 */ 107 struct irq_domain_ops { 108 int (*match)(struct irq_domain *d, struct device_node *node, 109 enum irq_domain_bus_token bus_token); 110 int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec, 111 enum irq_domain_bus_token bus_token); 112 int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw); 113 void (*unmap)(struct irq_domain *d, unsigned int virq); 114 int (*xlate)(struct irq_domain *d, struct device_node *node, 115 const u32 *intspec, unsigned int intsize, 116 unsigned long *out_hwirq, unsigned int *out_type); 117 #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 118 /* extended V2 interfaces to support hierarchy irq_domains */ 119 int (*alloc)(struct irq_domain *d, unsigned int virq, 120 unsigned int nr_irqs, void *arg); 121 void (*free)(struct irq_domain *d, unsigned int virq, 122 unsigned int nr_irqs); 123 int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve); 124 void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data); 125 int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec, 126 unsigned long *out_hwirq, unsigned int *out_type); 127 #endif 128 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS 129 void (*debug_show)(struct seq_file *m, struct irq_domain *d, 130 struct irq_data *irqd, int ind); 131 #endif 132 }; 133 134 extern const struct irq_domain_ops irq_generic_chip_ops; 135 136 struct irq_domain_chip_generic; 137 138 /** 139 * struct irq_domain - Hardware interrupt number translation object 140 * @link: Element in global irq_domain list. 141 * @name: Name of interrupt domain 142 * @ops: pointer to irq_domain methods 143 * @host_data: private data pointer for use by owner. Not touched by irq_domain 144 * core code. 145 * @flags: host per irq_domain flags 146 * @mapcount: The number of mapped interrupts 147 * 148 * Optional elements 149 * @fwnode: Pointer to firmware node associated with the irq_domain. Pretty easy 150 * to swap it for the of_node via the irq_domain_get_of_node accessor 151 * @gc: Pointer to a list of generic chips. There is a helper function for 152 * setting up one or more generic chips for interrupt controllers 153 * drivers using the generic chip library which uses this pointer. 154 * @parent: Pointer to parent irq_domain to support hierarchy irq_domains 155 * 156 * Revmap data, used internally by irq_domain 157 * @revmap_size: Size of the linear map table @revmap[] 158 * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map 159 * @revmap_mutex: Lock for the revmap 160 * @revmap: Linear table of irq_data pointers 161 */ 162 struct irq_domain { 163 struct list_head link; 164 const char *name; 165 const struct irq_domain_ops *ops; 166 void *host_data; 167 unsigned int flags; 168 unsigned int mapcount; 169 170 /* Optional data */ 171 struct fwnode_handle *fwnode; 172 enum irq_domain_bus_token bus_token; 173 struct irq_domain_chip_generic *gc; 174 #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 175 struct irq_domain *parent; 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_size; 181 struct radix_tree_root revmap_tree; 182 struct mutex revmap_mutex; 183 struct irq_data __rcu *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 /* Irq domain doesn't translate anything */ 214 IRQ_DOMAIN_FLAG_NO_MAP = (1 << 7), 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, unsigned 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_create_simple(struct fwnode_handle *fwnode, 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 struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode, 274 unsigned int size, 275 unsigned int first_irq, 276 irq_hw_number_t first_hwirq, 277 const struct irq_domain_ops *ops, 278 void *host_data); 279 extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec, 280 enum irq_domain_bus_token bus_token); 281 extern bool irq_domain_check_msi_remap(void); 282 extern void irq_set_default_host(struct irq_domain *host); 283 extern struct irq_domain *irq_get_default_host(void); 284 extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs, 285 irq_hw_number_t hwirq, int node, 286 const struct irq_affinity_desc *affinity); 287 288 static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node) 289 { 290 return node ? &node->fwnode : NULL; 291 } 292 293 extern const struct fwnode_operations irqchip_fwnode_ops; 294 295 static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode) 296 { 297 return fwnode && fwnode->ops == &irqchip_fwnode_ops; 298 } 299 300 extern void irq_domain_update_bus_token(struct irq_domain *domain, 301 enum irq_domain_bus_token bus_token); 302 303 static inline 304 struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, 305 enum irq_domain_bus_token bus_token) 306 { 307 struct irq_fwspec fwspec = { 308 .fwnode = fwnode, 309 }; 310 311 return irq_find_matching_fwspec(&fwspec, bus_token); 312 } 313 314 static inline struct irq_domain *irq_find_matching_host(struct device_node *node, 315 enum irq_domain_bus_token bus_token) 316 { 317 return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token); 318 } 319 320 static inline struct irq_domain *irq_find_host(struct device_node *node) 321 { 322 struct irq_domain *d; 323 324 d = irq_find_matching_host(node, DOMAIN_BUS_WIRED); 325 if (!d) 326 d = irq_find_matching_host(node, DOMAIN_BUS_ANY); 327 328 return d; 329 } 330 331 static inline struct irq_domain *irq_domain_add_simple(struct device_node *of_node, 332 unsigned int size, 333 unsigned int first_irq, 334 const struct irq_domain_ops *ops, 335 void *host_data) 336 { 337 return irq_domain_create_simple(of_node_to_fwnode(of_node), size, first_irq, ops, host_data); 338 } 339 340 /** 341 * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain. 342 * @of_node: pointer to interrupt controller's device tree node. 343 * @size: Number of interrupts in the domain. 344 * @ops: map/unmap domain callbacks 345 * @host_data: Controller private data pointer 346 */ 347 static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node, 348 unsigned int size, 349 const struct irq_domain_ops *ops, 350 void *host_data) 351 { 352 return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data); 353 } 354 355 #ifdef CONFIG_IRQ_DOMAIN_NOMAP 356 static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node, 357 unsigned int max_irq, 358 const struct irq_domain_ops *ops, 359 void *host_data) 360 { 361 return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data); 362 } 363 364 extern unsigned int irq_create_direct_mapping(struct irq_domain *host); 365 #endif 366 367 static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node, 368 const struct irq_domain_ops *ops, 369 void *host_data) 370 { 371 return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data); 372 } 373 374 static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode, 375 unsigned int size, 376 const struct irq_domain_ops *ops, 377 void *host_data) 378 { 379 return __irq_domain_add(fwnode, size, size, 0, ops, host_data); 380 } 381 382 static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode, 383 const struct irq_domain_ops *ops, 384 void *host_data) 385 { 386 return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data); 387 } 388 389 extern void irq_domain_remove(struct irq_domain *host); 390 391 extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq, 392 irq_hw_number_t hwirq); 393 extern void irq_domain_associate_many(struct irq_domain *domain, 394 unsigned int irq_base, 395 irq_hw_number_t hwirq_base, int count); 396 397 extern unsigned int irq_create_mapping_affinity(struct irq_domain *host, 398 irq_hw_number_t hwirq, 399 const struct irq_affinity_desc *affinity); 400 extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec); 401 extern void irq_dispose_mapping(unsigned int virq); 402 403 static inline unsigned int irq_create_mapping(struct irq_domain *host, 404 irq_hw_number_t hwirq) 405 { 406 return irq_create_mapping_affinity(host, hwirq, NULL); 407 } 408 409 extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain, 410 irq_hw_number_t hwirq, 411 unsigned int *irq); 412 413 static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain, 414 irq_hw_number_t hwirq) 415 { 416 return __irq_resolve_mapping(domain, hwirq, NULL); 417 } 418 419 /** 420 * irq_find_mapping() - Find a linux irq from a hw irq number. 421 * @domain: domain owning this hardware interrupt 422 * @hwirq: hardware irq number in that domain space 423 */ 424 static inline unsigned int irq_find_mapping(struct irq_domain *domain, 425 irq_hw_number_t hwirq) 426 { 427 unsigned int irq; 428 429 if (__irq_resolve_mapping(domain, hwirq, &irq)) 430 return irq; 431 432 return 0; 433 } 434 435 static inline unsigned int irq_linear_revmap(struct irq_domain *domain, 436 irq_hw_number_t hwirq) 437 { 438 return irq_find_mapping(domain, hwirq); 439 } 440 441 extern const struct irq_domain_ops irq_domain_simple_ops; 442 443 /* stock xlate functions */ 444 int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr, 445 const u32 *intspec, unsigned int intsize, 446 irq_hw_number_t *out_hwirq, unsigned int *out_type); 447 int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr, 448 const u32 *intspec, unsigned int intsize, 449 irq_hw_number_t *out_hwirq, unsigned int *out_type); 450 int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr, 451 const u32 *intspec, unsigned int intsize, 452 irq_hw_number_t *out_hwirq, unsigned int *out_type); 453 454 int irq_domain_translate_twocell(struct irq_domain *d, 455 struct irq_fwspec *fwspec, 456 unsigned long *out_hwirq, 457 unsigned int *out_type); 458 459 int irq_domain_translate_onecell(struct irq_domain *d, 460 struct irq_fwspec *fwspec, 461 unsigned long *out_hwirq, 462 unsigned int *out_type); 463 464 /* IPI functions */ 465 int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest); 466 int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest); 467 468 /* V2 interfaces to support hierarchy IRQ domains. */ 469 extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain, 470 unsigned int virq); 471 extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq, 472 irq_hw_number_t hwirq, struct irq_chip *chip, 473 void *chip_data, irq_flow_handler_t handler, 474 void *handler_data, const char *handler_name); 475 extern void irq_domain_reset_irq_data(struct irq_data *irq_data); 476 #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 477 extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent, 478 unsigned int flags, unsigned int size, 479 struct fwnode_handle *fwnode, 480 const struct irq_domain_ops *ops, void *host_data); 481 482 static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent, 483 unsigned int flags, 484 unsigned int size, 485 struct device_node *node, 486 const struct irq_domain_ops *ops, 487 void *host_data) 488 { 489 return irq_domain_create_hierarchy(parent, flags, size, 490 of_node_to_fwnode(node), 491 ops, host_data); 492 } 493 494 extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base, 495 unsigned int nr_irqs, int node, void *arg, 496 bool realloc, 497 const struct irq_affinity_desc *affinity); 498 extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs); 499 extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early); 500 extern void irq_domain_deactivate_irq(struct irq_data *irq_data); 501 502 static inline int irq_domain_alloc_irqs(struct irq_domain *domain, 503 unsigned int nr_irqs, int node, void *arg) 504 { 505 return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false, 506 NULL); 507 } 508 509 extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain, 510 unsigned int irq_base, 511 unsigned int nr_irqs, void *arg); 512 extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, 513 unsigned int virq, 514 irq_hw_number_t hwirq, 515 struct irq_chip *chip, 516 void *chip_data); 517 extern void irq_domain_free_irqs_common(struct irq_domain *domain, 518 unsigned int virq, 519 unsigned int nr_irqs); 520 extern void irq_domain_free_irqs_top(struct irq_domain *domain, 521 unsigned int virq, unsigned int nr_irqs); 522 523 extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg); 524 extern int irq_domain_pop_irq(struct irq_domain *domain, int virq); 525 526 extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain, 527 unsigned int irq_base, 528 unsigned int nr_irqs, void *arg); 529 530 extern void irq_domain_free_irqs_parent(struct irq_domain *domain, 531 unsigned int irq_base, 532 unsigned int nr_irqs); 533 534 extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain, 535 unsigned int virq); 536 537 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) 538 { 539 return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY; 540 } 541 542 static inline bool irq_domain_is_ipi(struct irq_domain *domain) 543 { 544 return domain->flags & 545 (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE); 546 } 547 548 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) 549 { 550 return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU; 551 } 552 553 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) 554 { 555 return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE; 556 } 557 558 static inline bool irq_domain_is_msi(struct irq_domain *domain) 559 { 560 return domain->flags & IRQ_DOMAIN_FLAG_MSI; 561 } 562 563 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain) 564 { 565 return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP; 566 } 567 568 extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain); 569 570 #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 571 static inline int irq_domain_alloc_irqs(struct irq_domain *domain, 572 unsigned int nr_irqs, int node, void *arg) 573 { 574 return -1; 575 } 576 577 static inline void irq_domain_free_irqs(unsigned int virq, 578 unsigned int nr_irqs) { } 579 580 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) 581 { 582 return false; 583 } 584 585 static inline bool irq_domain_is_ipi(struct irq_domain *domain) 586 { 587 return false; 588 } 589 590 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) 591 { 592 return false; 593 } 594 595 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) 596 { 597 return false; 598 } 599 600 static inline bool irq_domain_is_msi(struct irq_domain *domain) 601 { 602 return false; 603 } 604 605 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain) 606 { 607 return false; 608 } 609 610 static inline bool 611 irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain) 612 { 613 return false; 614 } 615 #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 616 617 #else /* CONFIG_IRQ_DOMAIN */ 618 static inline void irq_dispose_mapping(unsigned int virq) { } 619 static inline struct irq_domain *irq_find_matching_fwnode( 620 struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) 621 { 622 return NULL; 623 } 624 static inline bool irq_domain_check_msi_remap(void) 625 { 626 return false; 627 } 628 #endif /* !CONFIG_IRQ_DOMAIN */ 629 630 #endif /* _LINUX_IRQDOMAIN_H */ 631