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 * @dev: Pointer to a device that the domain represent, and that will be 155 * used for power management purposes. 156 * @parent: Pointer to parent irq_domain to support hierarchy irq_domains 157 * 158 * Revmap data, used internally by irq_domain 159 * @revmap_size: Size of the linear map table @revmap[] 160 * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map 161 * @revmap_mutex: Lock for the revmap 162 * @revmap: Linear table of irq_data pointers 163 */ 164 struct irq_domain { 165 struct list_head link; 166 const char *name; 167 const struct irq_domain_ops *ops; 168 void *host_data; 169 unsigned int flags; 170 unsigned int mapcount; 171 172 /* Optional data */ 173 struct fwnode_handle *fwnode; 174 enum irq_domain_bus_token bus_token; 175 struct irq_domain_chip_generic *gc; 176 struct device *dev; 177 #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 178 struct irq_domain *parent; 179 #endif 180 181 /* reverse map data. The linear map gets appended to the irq_domain */ 182 irq_hw_number_t hwirq_max; 183 unsigned int revmap_size; 184 struct radix_tree_root revmap_tree; 185 struct mutex revmap_mutex; 186 struct irq_data __rcu *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 /* Irq domain doesn't translate anything */ 217 IRQ_DOMAIN_FLAG_NO_MAP = (1 << 7), 218 219 /* 220 * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved 221 * for implementation specific purposes and ignored by the 222 * core code. 223 */ 224 IRQ_DOMAIN_FLAG_NONCORE = (1 << 16), 225 }; 226 227 static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d) 228 { 229 return to_of_node(d->fwnode); 230 } 231 232 static inline void irq_domain_set_pm_device(struct irq_domain *d, 233 struct device *dev) 234 { 235 if (d) 236 d->dev = dev; 237 } 238 239 #ifdef CONFIG_IRQ_DOMAIN 240 struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id, 241 const char *name, phys_addr_t *pa); 242 243 enum { 244 IRQCHIP_FWNODE_REAL, 245 IRQCHIP_FWNODE_NAMED, 246 IRQCHIP_FWNODE_NAMED_ID, 247 }; 248 249 static inline 250 struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name) 251 { 252 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL); 253 } 254 255 static inline 256 struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id) 257 { 258 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name, 259 NULL); 260 } 261 262 static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa) 263 { 264 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa); 265 } 266 267 void irq_domain_free_fwnode(struct fwnode_handle *fwnode); 268 struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, unsigned int size, 269 irq_hw_number_t hwirq_max, int direct_max, 270 const struct irq_domain_ops *ops, 271 void *host_data); 272 struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode, 273 unsigned int size, 274 unsigned int first_irq, 275 const struct irq_domain_ops *ops, 276 void *host_data); 277 struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, 278 unsigned int size, 279 unsigned int first_irq, 280 irq_hw_number_t first_hwirq, 281 const struct irq_domain_ops *ops, 282 void *host_data); 283 struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode, 284 unsigned int size, 285 unsigned int first_irq, 286 irq_hw_number_t first_hwirq, 287 const struct irq_domain_ops *ops, 288 void *host_data); 289 extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec, 290 enum irq_domain_bus_token bus_token); 291 extern bool irq_domain_check_msi_remap(void); 292 extern void irq_set_default_host(struct irq_domain *host); 293 extern struct irq_domain *irq_get_default_host(void); 294 extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs, 295 irq_hw_number_t hwirq, int node, 296 const struct irq_affinity_desc *affinity); 297 298 static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node) 299 { 300 return node ? &node->fwnode : NULL; 301 } 302 303 extern const struct fwnode_operations irqchip_fwnode_ops; 304 305 static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode) 306 { 307 return fwnode && fwnode->ops == &irqchip_fwnode_ops; 308 } 309 310 extern void irq_domain_update_bus_token(struct irq_domain *domain, 311 enum irq_domain_bus_token bus_token); 312 313 static inline 314 struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, 315 enum irq_domain_bus_token bus_token) 316 { 317 struct irq_fwspec fwspec = { 318 .fwnode = fwnode, 319 }; 320 321 return irq_find_matching_fwspec(&fwspec, bus_token); 322 } 323 324 static inline struct irq_domain *irq_find_matching_host(struct device_node *node, 325 enum irq_domain_bus_token bus_token) 326 { 327 return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token); 328 } 329 330 static inline struct irq_domain *irq_find_host(struct device_node *node) 331 { 332 struct irq_domain *d; 333 334 d = irq_find_matching_host(node, DOMAIN_BUS_WIRED); 335 if (!d) 336 d = irq_find_matching_host(node, DOMAIN_BUS_ANY); 337 338 return d; 339 } 340 341 static inline struct irq_domain *irq_domain_add_simple(struct device_node *of_node, 342 unsigned int size, 343 unsigned int first_irq, 344 const struct irq_domain_ops *ops, 345 void *host_data) 346 { 347 return irq_domain_create_simple(of_node_to_fwnode(of_node), size, first_irq, ops, host_data); 348 } 349 350 /** 351 * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain. 352 * @of_node: pointer to interrupt controller's device tree node. 353 * @size: Number of interrupts in the domain. 354 * @ops: map/unmap domain callbacks 355 * @host_data: Controller private data pointer 356 */ 357 static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node, 358 unsigned int size, 359 const struct irq_domain_ops *ops, 360 void *host_data) 361 { 362 return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data); 363 } 364 365 #ifdef CONFIG_IRQ_DOMAIN_NOMAP 366 static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node, 367 unsigned int max_irq, 368 const struct irq_domain_ops *ops, 369 void *host_data) 370 { 371 return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data); 372 } 373 374 extern unsigned int irq_create_direct_mapping(struct irq_domain *host); 375 #endif 376 377 static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node, 378 const struct irq_domain_ops *ops, 379 void *host_data) 380 { 381 return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data); 382 } 383 384 static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode, 385 unsigned int size, 386 const struct irq_domain_ops *ops, 387 void *host_data) 388 { 389 return __irq_domain_add(fwnode, size, size, 0, ops, host_data); 390 } 391 392 static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode, 393 const struct irq_domain_ops *ops, 394 void *host_data) 395 { 396 return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data); 397 } 398 399 extern void irq_domain_remove(struct irq_domain *host); 400 401 extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq, 402 irq_hw_number_t hwirq); 403 extern void irq_domain_associate_many(struct irq_domain *domain, 404 unsigned int irq_base, 405 irq_hw_number_t hwirq_base, int count); 406 407 extern unsigned int irq_create_mapping_affinity(struct irq_domain *host, 408 irq_hw_number_t hwirq, 409 const struct irq_affinity_desc *affinity); 410 extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec); 411 extern void irq_dispose_mapping(unsigned int virq); 412 413 static inline unsigned int irq_create_mapping(struct irq_domain *host, 414 irq_hw_number_t hwirq) 415 { 416 return irq_create_mapping_affinity(host, hwirq, NULL); 417 } 418 419 extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain, 420 irq_hw_number_t hwirq, 421 unsigned int *irq); 422 423 static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain, 424 irq_hw_number_t hwirq) 425 { 426 return __irq_resolve_mapping(domain, hwirq, NULL); 427 } 428 429 /** 430 * irq_find_mapping() - Find a linux irq from a hw irq number. 431 * @domain: domain owning this hardware interrupt 432 * @hwirq: hardware irq number in that domain space 433 */ 434 static inline unsigned int irq_find_mapping(struct irq_domain *domain, 435 irq_hw_number_t hwirq) 436 { 437 unsigned int irq; 438 439 if (__irq_resolve_mapping(domain, hwirq, &irq)) 440 return irq; 441 442 return 0; 443 } 444 445 static inline unsigned int irq_linear_revmap(struct irq_domain *domain, 446 irq_hw_number_t hwirq) 447 { 448 return irq_find_mapping(domain, hwirq); 449 } 450 451 extern const struct irq_domain_ops irq_domain_simple_ops; 452 453 /* stock xlate functions */ 454 int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr, 455 const u32 *intspec, unsigned int intsize, 456 irq_hw_number_t *out_hwirq, unsigned int *out_type); 457 int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr, 458 const u32 *intspec, unsigned int intsize, 459 irq_hw_number_t *out_hwirq, unsigned int *out_type); 460 int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr, 461 const u32 *intspec, unsigned int intsize, 462 irq_hw_number_t *out_hwirq, unsigned int *out_type); 463 464 int irq_domain_translate_twocell(struct irq_domain *d, 465 struct irq_fwspec *fwspec, 466 unsigned long *out_hwirq, 467 unsigned int *out_type); 468 469 int irq_domain_translate_onecell(struct irq_domain *d, 470 struct irq_fwspec *fwspec, 471 unsigned long *out_hwirq, 472 unsigned int *out_type); 473 474 /* IPI functions */ 475 int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest); 476 int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest); 477 478 /* V2 interfaces to support hierarchy IRQ domains. */ 479 extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain, 480 unsigned int virq); 481 extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq, 482 irq_hw_number_t hwirq, 483 const struct irq_chip *chip, 484 void *chip_data, irq_flow_handler_t handler, 485 void *handler_data, const char *handler_name); 486 extern void irq_domain_reset_irq_data(struct irq_data *irq_data); 487 #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 488 extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent, 489 unsigned int flags, unsigned int size, 490 struct fwnode_handle *fwnode, 491 const struct irq_domain_ops *ops, void *host_data); 492 493 static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent, 494 unsigned int flags, 495 unsigned int size, 496 struct device_node *node, 497 const struct irq_domain_ops *ops, 498 void *host_data) 499 { 500 return irq_domain_create_hierarchy(parent, flags, size, 501 of_node_to_fwnode(node), 502 ops, host_data); 503 } 504 505 extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base, 506 unsigned int nr_irqs, int node, void *arg, 507 bool realloc, 508 const struct irq_affinity_desc *affinity); 509 extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs); 510 extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early); 511 extern void irq_domain_deactivate_irq(struct irq_data *irq_data); 512 513 static inline int irq_domain_alloc_irqs(struct irq_domain *domain, 514 unsigned int nr_irqs, int node, void *arg) 515 { 516 return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false, 517 NULL); 518 } 519 520 extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain, 521 unsigned int irq_base, 522 unsigned int nr_irqs, void *arg); 523 extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, 524 unsigned int virq, 525 irq_hw_number_t hwirq, 526 const struct irq_chip *chip, 527 void *chip_data); 528 extern void irq_domain_free_irqs_common(struct irq_domain *domain, 529 unsigned int virq, 530 unsigned int nr_irqs); 531 extern void irq_domain_free_irqs_top(struct irq_domain *domain, 532 unsigned int virq, unsigned int nr_irqs); 533 534 extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg); 535 extern int irq_domain_pop_irq(struct irq_domain *domain, int virq); 536 537 extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain, 538 unsigned int irq_base, 539 unsigned int nr_irqs, void *arg); 540 541 extern void irq_domain_free_irqs_parent(struct irq_domain *domain, 542 unsigned int irq_base, 543 unsigned int nr_irqs); 544 545 extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain, 546 unsigned int virq); 547 548 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) 549 { 550 return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY; 551 } 552 553 static inline bool irq_domain_is_ipi(struct irq_domain *domain) 554 { 555 return domain->flags & 556 (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE); 557 } 558 559 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) 560 { 561 return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU; 562 } 563 564 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) 565 { 566 return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE; 567 } 568 569 static inline bool irq_domain_is_msi(struct irq_domain *domain) 570 { 571 return domain->flags & IRQ_DOMAIN_FLAG_MSI; 572 } 573 574 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain) 575 { 576 return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP; 577 } 578 579 extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain); 580 581 #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 582 static inline int irq_domain_alloc_irqs(struct irq_domain *domain, 583 unsigned int nr_irqs, int node, void *arg) 584 { 585 return -1; 586 } 587 588 static inline void irq_domain_free_irqs(unsigned int virq, 589 unsigned int nr_irqs) { } 590 591 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) 592 { 593 return false; 594 } 595 596 static inline bool irq_domain_is_ipi(struct irq_domain *domain) 597 { 598 return false; 599 } 600 601 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) 602 { 603 return false; 604 } 605 606 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) 607 { 608 return false; 609 } 610 611 static inline bool irq_domain_is_msi(struct irq_domain *domain) 612 { 613 return false; 614 } 615 616 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain) 617 { 618 return false; 619 } 620 621 static inline bool 622 irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain) 623 { 624 return false; 625 } 626 #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 627 628 #else /* CONFIG_IRQ_DOMAIN */ 629 static inline void irq_dispose_mapping(unsigned int virq) { } 630 static inline struct irq_domain *irq_find_matching_fwnode( 631 struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) 632 { 633 return NULL; 634 } 635 static inline bool irq_domain_check_msi_remap(void) 636 { 637 return false; 638 } 639 #endif /* !CONFIG_IRQ_DOMAIN */ 640 641 #endif /* _LINUX_IRQDOMAIN_H */ 642