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/irqdomain_defs.h> 35#include <linux/irqhandler.h> 36#include <linux/of.h> 37#include <linux/mutex.h> 38#include <linux/radix-tree.h> 39 40struct device_node; 41struct fwnode_handle; 42struct irq_domain; 43struct irq_chip; 44struct irq_data; 45struct irq_desc; 46struct cpumask; 47struct seq_file; 48struct irq_affinity_desc; 49struct msi_parent_ops; 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 */ 63struct irq_fwspec { 64 struct fwnode_handle *fwnode; 65 int param_count; 66 u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS]; 67}; 68 69/* Conversion function from of_phandle_args fields to fwspec */ 70void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, 71 unsigned int count, struct irq_fwspec *fwspec); 72 73/** 74 * struct irq_domain_ops - Methods for irq_domain objects 75 * @match: Match an interrupt controller device node to a host, returns 76 * 1 on a match 77 * @map: Create or update a mapping between a virtual irq number and a hw 78 * irq number. This is called only once for a given mapping. 79 * @unmap: Dispose of such a mapping 80 * @xlate: Given a device tree node and interrupt specifier, decode 81 * the hardware irq number and linux irq type value. 82 * 83 * Functions below are provided by the driver and called whenever a new mapping 84 * is created or an old mapping is disposed. The driver can then proceed to 85 * whatever internal data structures management is required. It also needs 86 * to setup the irq_desc when returning from map(). 87 */ 88struct irq_domain_ops { 89 int (*match)(struct irq_domain *d, struct device_node *node, 90 enum irq_domain_bus_token bus_token); 91 int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec, 92 enum irq_domain_bus_token bus_token); 93 int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw); 94 void (*unmap)(struct irq_domain *d, unsigned int virq); 95 int (*xlate)(struct irq_domain *d, struct device_node *node, 96 const u32 *intspec, unsigned int intsize, 97 unsigned long *out_hwirq, unsigned int *out_type); 98#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 99 /* extended V2 interfaces to support hierarchy irq_domains */ 100 int (*alloc)(struct irq_domain *d, unsigned int virq, 101 unsigned int nr_irqs, void *arg); 102 void (*free)(struct irq_domain *d, unsigned int virq, 103 unsigned int nr_irqs); 104 int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve); 105 void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data); 106 int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec, 107 unsigned long *out_hwirq, unsigned int *out_type); 108#endif 109#ifdef CONFIG_GENERIC_IRQ_DEBUGFS 110 void (*debug_show)(struct seq_file *m, struct irq_domain *d, 111 struct irq_data *irqd, int ind); 112#endif 113}; 114 115extern const struct irq_domain_ops irq_generic_chip_ops; 116 117struct irq_domain_chip_generic; 118 119/** 120 * struct irq_domain - Hardware interrupt number translation object 121 * @link: Element in global irq_domain list. 122 * @name: Name of interrupt domain 123 * @ops: Pointer to irq_domain methods 124 * @host_data: Private data pointer for use by owner. Not touched by irq_domain 125 * core code. 126 * @flags: Per irq_domain flags 127 * @mapcount: The number of mapped interrupts 128 * @mutex: Domain lock, hierarchical domains use root domain's lock 129 * @root: Pointer to root domain, or containing structure if non-hierarchical 130 * 131 * Optional elements: 132 * @fwnode: Pointer to firmware node associated with the irq_domain. Pretty easy 133 * to swap it for the of_node via the irq_domain_get_of_node accessor 134 * @gc: Pointer to a list of generic chips. There is a helper function for 135 * setting up one or more generic chips for interrupt controllers 136 * drivers using the generic chip library which uses this pointer. 137 * @dev: Pointer to the device which instantiated the irqdomain 138 * With per device irq domains this is not necessarily the same 139 * as @pm_dev. 140 * @pm_dev: Pointer to a device that can be utilized for power management 141 * purposes related to the irq domain. 142 * @parent: Pointer to parent irq_domain to support hierarchy irq_domains 143 * @msi_parent_ops: Pointer to MSI parent domain methods for per device domain init 144 * 145 * Revmap data, used internally by the irq domain code: 146 * @revmap_size: Size of the linear map table @revmap[] 147 * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map 148 * @revmap: Linear table of irq_data pointers 149 */ 150struct irq_domain { 151 struct list_head link; 152 const char *name; 153 const struct irq_domain_ops *ops; 154 void *host_data; 155 unsigned int flags; 156 unsigned int mapcount; 157 struct mutex mutex; 158 struct irq_domain *root; 159 160 /* Optional data */ 161 struct fwnode_handle *fwnode; 162 enum irq_domain_bus_token bus_token; 163 struct irq_domain_chip_generic *gc; 164 struct device *dev; 165 struct device *pm_dev; 166#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 167 struct irq_domain *parent; 168#endif 169#ifdef CONFIG_GENERIC_MSI_IRQ 170 const struct msi_parent_ops *msi_parent_ops; 171#endif 172 173 /* reverse map data. The linear map gets appended to the irq_domain */ 174 irq_hw_number_t hwirq_max; 175 unsigned int revmap_size; 176 struct radix_tree_root revmap_tree; 177 struct irq_data __rcu *revmap[] __counted_by(revmap_size); 178}; 179 180/* Irq domain flags */ 181enum { 182 /* Irq domain is hierarchical */ 183 IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0), 184 185 /* Irq domain name was allocated in __irq_domain_add() */ 186 IRQ_DOMAIN_NAME_ALLOCATED = (1 << 1), 187 188 /* Irq domain is an IPI domain with virq per cpu */ 189 IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2), 190 191 /* Irq domain is an IPI domain with single virq */ 192 IRQ_DOMAIN_FLAG_IPI_SINGLE = (1 << 3), 193 194 /* Irq domain implements MSIs */ 195 IRQ_DOMAIN_FLAG_MSI = (1 << 4), 196 197 /* 198 * Irq domain implements isolated MSI, see msi_device_has_isolated_msi() 199 */ 200 IRQ_DOMAIN_FLAG_ISOLATED_MSI = (1 << 5), 201 202 /* Irq domain doesn't translate anything */ 203 IRQ_DOMAIN_FLAG_NO_MAP = (1 << 6), 204 205 /* Irq domain is a MSI parent domain */ 206 IRQ_DOMAIN_FLAG_MSI_PARENT = (1 << 8), 207 208 /* Irq domain is a MSI device domain */ 209 IRQ_DOMAIN_FLAG_MSI_DEVICE = (1 << 9), 210 211 /* 212 * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved 213 * for implementation specific purposes and ignored by the 214 * core code. 215 */ 216 IRQ_DOMAIN_FLAG_NONCORE = (1 << 16), 217}; 218 219static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d) 220{ 221 return to_of_node(d->fwnode); 222} 223 224static inline void irq_domain_set_pm_device(struct irq_domain *d, 225 struct device *dev) 226{ 227 if (d) 228 d->pm_dev = dev; 229} 230 231#ifdef CONFIG_IRQ_DOMAIN 232struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id, 233 const char *name, phys_addr_t *pa); 234 235enum { 236 IRQCHIP_FWNODE_REAL, 237 IRQCHIP_FWNODE_NAMED, 238 IRQCHIP_FWNODE_NAMED_ID, 239}; 240 241static inline 242struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name) 243{ 244 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL); 245} 246 247static inline 248struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id) 249{ 250 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name, 251 NULL); 252} 253 254static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa) 255{ 256 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa); 257} 258 259void irq_domain_free_fwnode(struct fwnode_handle *fwnode); 260struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, unsigned int size, 261 irq_hw_number_t hwirq_max, int direct_max, 262 const struct irq_domain_ops *ops, 263 void *host_data); 264struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode, 265 unsigned int size, 266 unsigned int first_irq, 267 const struct irq_domain_ops *ops, 268 void *host_data); 269struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, 270 unsigned int size, 271 unsigned int first_irq, 272 irq_hw_number_t first_hwirq, 273 const struct irq_domain_ops *ops, 274 void *host_data); 275struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode, 276 unsigned int size, 277 unsigned int first_irq, 278 irq_hw_number_t first_hwirq, 279 const struct irq_domain_ops *ops, 280 void *host_data); 281extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec, 282 enum irq_domain_bus_token bus_token); 283extern void irq_set_default_host(struct irq_domain *host); 284extern struct irq_domain *irq_get_default_host(void); 285extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs, 286 irq_hw_number_t hwirq, int node, 287 const struct irq_affinity_desc *affinity); 288 289static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node) 290{ 291 return node ? &node->fwnode : NULL; 292} 293 294extern const struct fwnode_operations irqchip_fwnode_ops; 295 296static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode) 297{ 298 return fwnode && fwnode->ops == &irqchip_fwnode_ops; 299} 300 301extern void irq_domain_update_bus_token(struct irq_domain *domain, 302 enum irq_domain_bus_token bus_token); 303 304static inline 305struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, 306 enum irq_domain_bus_token bus_token) 307{ 308 struct irq_fwspec fwspec = { 309 .fwnode = fwnode, 310 }; 311 312 return irq_find_matching_fwspec(&fwspec, bus_token); 313} 314 315static inline struct irq_domain *irq_find_matching_host(struct device_node *node, 316 enum irq_domain_bus_token bus_token) 317{ 318 return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token); 319} 320 321static inline struct irq_domain *irq_find_host(struct device_node *node) 322{ 323 struct irq_domain *d; 324 325 d = irq_find_matching_host(node, DOMAIN_BUS_WIRED); 326 if (!d) 327 d = irq_find_matching_host(node, DOMAIN_BUS_ANY); 328 329 return d; 330} 331 332static inline struct irq_domain *irq_domain_add_simple(struct device_node *of_node, 333 unsigned int size, 334 unsigned int first_irq, 335 const struct irq_domain_ops *ops, 336 void *host_data) 337{ 338 return irq_domain_create_simple(of_node_to_fwnode(of_node), size, first_irq, ops, host_data); 339} 340 341/** 342 * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain. 343 * @of_node: pointer to interrupt controller's device tree node. 344 * @size: Number of interrupts in the domain. 345 * @ops: map/unmap domain callbacks 346 * @host_data: Controller private data pointer 347 */ 348static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node, 349 unsigned int size, 350 const struct irq_domain_ops *ops, 351 void *host_data) 352{ 353 return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data); 354} 355 356#ifdef CONFIG_IRQ_DOMAIN_NOMAP 357static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node, 358 unsigned int max_irq, 359 const struct irq_domain_ops *ops, 360 void *host_data) 361{ 362 return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data); 363} 364 365extern unsigned int irq_create_direct_mapping(struct irq_domain *host); 366#endif 367 368static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node, 369 const struct irq_domain_ops *ops, 370 void *host_data) 371{ 372 return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data); 373} 374 375static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode, 376 unsigned int size, 377 const struct irq_domain_ops *ops, 378 void *host_data) 379{ 380 return __irq_domain_add(fwnode, size, size, 0, ops, host_data); 381} 382 383static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode, 384 const struct irq_domain_ops *ops, 385 void *host_data) 386{ 387 return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data); 388} 389 390extern void irq_domain_remove(struct irq_domain *host); 391 392extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq, 393 irq_hw_number_t hwirq); 394extern void irq_domain_associate_many(struct irq_domain *domain, 395 unsigned int irq_base, 396 irq_hw_number_t hwirq_base, int count); 397 398extern unsigned int irq_create_mapping_affinity(struct irq_domain *host, 399 irq_hw_number_t hwirq, 400 const struct irq_affinity_desc *affinity); 401extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec); 402extern void irq_dispose_mapping(unsigned int virq); 403 404static inline unsigned int irq_create_mapping(struct irq_domain *host, 405 irq_hw_number_t hwirq) 406{ 407 return irq_create_mapping_affinity(host, hwirq, NULL); 408} 409 410extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain, 411 irq_hw_number_t hwirq, 412 unsigned int *irq); 413 414static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain, 415 irq_hw_number_t hwirq) 416{ 417 return __irq_resolve_mapping(domain, hwirq, NULL); 418} 419 420/** 421 * irq_find_mapping() - Find a linux irq from a hw irq number. 422 * @domain: domain owning this hardware interrupt 423 * @hwirq: hardware irq number in that domain space 424 */ 425static inline unsigned int irq_find_mapping(struct irq_domain *domain, 426 irq_hw_number_t hwirq) 427{ 428 unsigned int irq; 429 430 if (__irq_resolve_mapping(domain, hwirq, &irq)) 431 return irq; 432 433 return 0; 434} 435 436static inline unsigned int irq_linear_revmap(struct irq_domain *domain, 437 irq_hw_number_t hwirq) 438{ 439 return irq_find_mapping(domain, hwirq); 440} 441 442extern const struct irq_domain_ops irq_domain_simple_ops; 443 444/* stock xlate functions */ 445int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr, 446 const u32 *intspec, unsigned int intsize, 447 irq_hw_number_t *out_hwirq, unsigned int *out_type); 448int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr, 449 const u32 *intspec, unsigned int intsize, 450 irq_hw_number_t *out_hwirq, unsigned int *out_type); 451int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr, 452 const u32 *intspec, unsigned int intsize, 453 irq_hw_number_t *out_hwirq, unsigned int *out_type); 454 455int irq_domain_translate_twocell(struct irq_domain *d, 456 struct irq_fwspec *fwspec, 457 unsigned long *out_hwirq, 458 unsigned int *out_type); 459 460int irq_domain_translate_onecell(struct irq_domain *d, 461 struct irq_fwspec *fwspec, 462 unsigned long *out_hwirq, 463 unsigned int *out_type); 464 465/* IPI functions */ 466int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest); 467int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest); 468 469/* V2 interfaces to support hierarchy IRQ domains. */ 470extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain, 471 unsigned int virq); 472extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq, 473 irq_hw_number_t hwirq, 474 const struct irq_chip *chip, 475 void *chip_data, irq_flow_handler_t handler, 476 void *handler_data, const char *handler_name); 477extern void irq_domain_reset_irq_data(struct irq_data *irq_data); 478#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY 479extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent, 480 unsigned int flags, unsigned int size, 481 struct fwnode_handle *fwnode, 482 const struct irq_domain_ops *ops, void *host_data); 483 484static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent, 485 unsigned int flags, 486 unsigned int size, 487 struct device_node *node, 488 const struct irq_domain_ops *ops, 489 void *host_data) 490{ 491 return irq_domain_create_hierarchy(parent, flags, size, 492 of_node_to_fwnode(node), 493 ops, host_data); 494} 495 496extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base, 497 unsigned int nr_irqs, int node, void *arg, 498 bool realloc, 499 const struct irq_affinity_desc *affinity); 500extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs); 501extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early); 502extern void irq_domain_deactivate_irq(struct irq_data *irq_data); 503 504static inline int irq_domain_alloc_irqs(struct irq_domain *domain, 505 unsigned int nr_irqs, int node, void *arg) 506{ 507 return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false, 508 NULL); 509} 510 511extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain, 512 unsigned int irq_base, 513 unsigned int nr_irqs, void *arg); 514extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, 515 unsigned int virq, 516 irq_hw_number_t hwirq, 517 const struct irq_chip *chip, 518 void *chip_data); 519extern void irq_domain_free_irqs_common(struct irq_domain *domain, 520 unsigned int virq, 521 unsigned int nr_irqs); 522extern void irq_domain_free_irqs_top(struct irq_domain *domain, 523 unsigned int virq, unsigned int nr_irqs); 524 525extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg); 526extern int irq_domain_pop_irq(struct irq_domain *domain, int virq); 527 528extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain, 529 unsigned int irq_base, 530 unsigned int nr_irqs, void *arg); 531 532extern void irq_domain_free_irqs_parent(struct irq_domain *domain, 533 unsigned int irq_base, 534 unsigned int nr_irqs); 535 536extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain, 537 unsigned int virq); 538 539static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) 540{ 541 return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY; 542} 543 544static inline bool irq_domain_is_ipi(struct irq_domain *domain) 545{ 546 return domain->flags & 547 (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE); 548} 549 550static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) 551{ 552 return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU; 553} 554 555static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) 556{ 557 return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE; 558} 559 560static inline bool irq_domain_is_msi(struct irq_domain *domain) 561{ 562 return domain->flags & IRQ_DOMAIN_FLAG_MSI; 563} 564 565static inline bool irq_domain_is_msi_parent(struct irq_domain *domain) 566{ 567 return domain->flags & IRQ_DOMAIN_FLAG_MSI_PARENT; 568} 569 570static inline bool irq_domain_is_msi_device(struct irq_domain *domain) 571{ 572 return domain->flags & IRQ_DOMAIN_FLAG_MSI_DEVICE; 573} 574 575#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 576static inline int irq_domain_alloc_irqs(struct irq_domain *domain, 577 unsigned int nr_irqs, int node, void *arg) 578{ 579 return -1; 580} 581 582static inline void irq_domain_free_irqs(unsigned int virq, 583 unsigned int nr_irqs) { } 584 585static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) 586{ 587 return false; 588} 589 590static inline bool irq_domain_is_ipi(struct irq_domain *domain) 591{ 592 return false; 593} 594 595static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) 596{ 597 return false; 598} 599 600static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) 601{ 602 return false; 603} 604 605static inline bool irq_domain_is_msi(struct irq_domain *domain) 606{ 607 return false; 608} 609 610static inline bool irq_domain_is_msi_parent(struct irq_domain *domain) 611{ 612 return false; 613} 614 615static inline bool irq_domain_is_msi_device(struct irq_domain *domain) 616{ 617 return false; 618} 619 620#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ 621 622#ifdef CONFIG_GENERIC_MSI_IRQ 623int msi_device_domain_alloc_wired(struct irq_domain *domain, unsigned int hwirq, 624 unsigned int type); 625void msi_device_domain_free_wired(struct irq_domain *domain, unsigned int virq); 626#else 627static inline int msi_device_domain_alloc_wired(struct irq_domain *domain, unsigned int hwirq, 628 unsigned int type) 629{ 630 WARN_ON_ONCE(1); 631 return -EINVAL; 632} 633static inline void msi_device_domain_free_wired(struct irq_domain *domain, unsigned int virq) 634{ 635 WARN_ON_ONCE(1); 636} 637#endif 638 639#else /* CONFIG_IRQ_DOMAIN */ 640static inline void irq_dispose_mapping(unsigned int virq) { } 641static inline struct irq_domain *irq_find_matching_fwnode( 642 struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) 643{ 644 return NULL; 645} 646#endif /* !CONFIG_IRQ_DOMAIN */ 647 648#endif /* _LINUX_IRQDOMAIN_H */ 649