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 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 /*
  68  * Should several domains have the same device node, but serve
  69  * different purposes (for example one domain is for PCI/MSI, and the
  70  * other for wired IRQs), they can be distinguished using a
  71  * bus-specific token. Most domains are expected to only carry
  72  * DOMAIN_BUS_ANY.
  73  */
  74 enum irq_domain_bus_token {
  75         DOMAIN_BUS_ANY          = 0,
  76         DOMAIN_BUS_WIRED,
  77         DOMAIN_BUS_GENERIC_MSI,
  78         DOMAIN_BUS_PCI_MSI,
  79         DOMAIN_BUS_PLATFORM_MSI,
  80         DOMAIN_BUS_NEXUS,
  81         DOMAIN_BUS_IPI,
  82         DOMAIN_BUS_FSL_MC_MSI,
  83         DOMAIN_BUS_TI_SCI_INTA_MSI,
  84         DOMAIN_BUS_WAKEUP,
  85         DOMAIN_BUS_VMD_MSI,
  86 };
  87
  88 /**
  89  * struct irq_domain_ops - Methods for irq_domain objects
  90  * @match: Match an interrupt controller device node to a host, returns
  91  *         1 on a match
  92  * @map: Create or update a mapping between a virtual irq number and a hw
  93  *       irq number. This is called only once for a given mapping.
  94  * @unmap: Dispose of such a mapping
  95  * @xlate: Given a device tree node and interrupt specifier, decode
  96  *         the hardware irq number and linux irq type value.
  97  *
  98  * Functions below are provided by the driver and called whenever a new mapping
  99  * is created or an old mapping is disposed. The driver can then proceed to
 100  * whatever internal data structures management is required. It also needs
 101  * to setup the irq_desc when returning from map().
 102  */
 103 struct irq_domain_ops {
 104         int (*match)(struct irq_domain *d, struct device_node *node,
 105                      enum irq_domain_bus_token bus_token);
 106         int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec,
 107                       enum irq_domain_bus_token bus_token);
 108         int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw);
 109         void (*unmap)(struct irq_domain *d, unsigned int virq);
 110         int (*xlate)(struct irq_domain *d, struct device_node *node,
 111                      const u32 *intspec, unsigned int intsize,
 112                      unsigned long *out_hwirq, unsigned int *out_type);
 113 #ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
 114         /* extended V2 interfaces to support hierarchy irq_domains */
 115         int (*alloc)(struct irq_domain *d, unsigned int virq,
 116                      unsigned int nr_irqs, void *arg);
 117         void (*free)(struct irq_domain *d, unsigned int virq,
 118                      unsigned int nr_irqs);
 119         int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve);
 120         void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data);
 121         int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec,
 122                          unsigned long *out_hwirq, unsigned int *out_type);
 123 #endif
 124 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS
 125         void (*debug_show)(struct seq_file *m, struct irq_domain *d,
 126                            struct irq_data *irqd, int ind);
 127 #endif
 128 };
 129
 130 extern struct irq_domain_ops irq_generic_chip_ops;
 131
 132 struct irq_domain_chip_generic;
 133
 134 /**
 135  * struct irq_domain - Hardware interrupt number translation object
 136  * @link: Element in global irq_domain list.
 137  * @name: Name of interrupt domain
 138  * @ops: pointer to irq_domain methods
 139  * @host_data: private data pointer for use by owner.  Not touched by irq_domain
 140  *             core code.
 141  * @flags: host per irq_domain flags
 142  * @mapcount: The number of mapped interrupts
 143  *
 144  * Optional elements
 145  * @fwnode: Pointer to firmware node associated with the irq_domain. Pretty easy
 146  *          to swap it for the of_node via the irq_domain_get_of_node accessor
 147  * @gc: Pointer to a list of generic chips. There is a helper function for
 148  *      setting up one or more generic chips for interrupt controllers
 149  *      drivers using the generic chip library which uses this pointer.
 150  * @parent: Pointer to parent irq_domain to support hierarchy irq_domains
 151  *
 152  * Revmap data, used internally by irq_domain
 153  * @revmap_size: Size of the linear map table @revmap[]
 154  * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map
 155  * @revmap_mutex: Lock for the revmap
 156  * @revmap: Linear table of irq_data pointers
 157  */
 158 struct irq_domain {
 159         struct list_head link;
 160         const char *name;
 161         const struct irq_domain_ops *ops;
 162         void *host_data;
 163         unsigned int flags;
 164         unsigned int mapcount;
 165
 166         /* Optional data */
 167         struct fwnode_handle *fwnode;
 168         enum irq_domain_bus_token bus_token;
 169         struct irq_domain_chip_generic *gc;
 170 #ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
 171         struct irq_domain *parent;
 172 #endif
 173
 174         /* reverse map data. The linear map gets appended to the irq_domain */
 175         irq_hw_number_t hwirq_max;
 176         unsigned int revmap_size;
 177         struct radix_tree_root revmap_tree;
 178         struct mutex revmap_mutex;
 179         struct irq_data __rcu *revmap[];
 180 };
 181
 182 /* Irq domain flags */
 183 enum {
 184         /* Irq domain is hierarchical */
 185         IRQ_DOMAIN_FLAG_HIERARCHY       = (1 << 0),
 186
 187         /* Irq domain name was allocated in __irq_domain_add() */
 188         IRQ_DOMAIN_NAME_ALLOCATED       = (1 << 1),
 189
 190         /* Irq domain is an IPI domain with virq per cpu */
 191         IRQ_DOMAIN_FLAG_IPI_PER_CPU     = (1 << 2),
 192
 193         /* Irq domain is an IPI domain with single virq */
 194         IRQ_DOMAIN_FLAG_IPI_SINGLE      = (1 << 3),
 195
 196         /* Irq domain implements MSIs */
 197         IRQ_DOMAIN_FLAG_MSI             = (1 << 4),
 198
 199         /* Irq domain implements MSI remapping */
 200         IRQ_DOMAIN_FLAG_MSI_REMAP       = (1 << 5),
 201
 202         /*
 203          * Quirk to handle MSI implementations which do not provide
 204          * masking. Currently known to affect x86, but partially
 205          * handled in core code.
 206          */
 207         IRQ_DOMAIN_MSI_NOMASK_QUIRK     = (1 << 6),
 208
 209         /* Irq domain doesn't translate anything */
 210         IRQ_DOMAIN_FLAG_NO_MAP          = (1 << 7),
 211
 212         /*
 213          * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
 214          * for implementation specific purposes and ignored by the
 215          * core code.
 216          */
 217         IRQ_DOMAIN_FLAG_NONCORE         = (1 << 16),
 218 };
 219
 220 static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
 221 {
 222         return to_of_node(d->fwnode);
 223 }
 224
 225 #ifdef CONFIG_IRQ_DOMAIN
 226 struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
 227                                                 const char *name, phys_addr_t *pa);
 228
 229 enum {
 230         IRQCHIP_FWNODE_REAL,
 231         IRQCHIP_FWNODE_NAMED,
 232         IRQCHIP_FWNODE_NAMED_ID,
 233 };
 234
 235 static inline
 236 struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name)
 237 {
 238         return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL);
 239 }
 240
 241 static inline
 242 struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id)
 243 {
 244         return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name,
 245                                          NULL);
 246 }
 247
 248 static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa)
 249 {
 250         return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa);
 251 }
 252
 253 void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
 254 struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
 255                                     irq_hw_number_t hwirq_max, int direct_max,
 256                                     const struct irq_domain_ops *ops,
 257                                     void *host_data);
 258 struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode,
 259                                             unsigned int size,
 260                                             unsigned int first_irq,
 261                                             const struct irq_domain_ops *ops,
 262                                             void *host_data);
 263 struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
 264                                          unsigned int size,
 265                                          unsigned int first_irq,
 266                                          irq_hw_number_t first_hwirq,
 267                                          const struct irq_domain_ops *ops,
 268                                          void *host_data);
 269 struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode,
 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);
 275 extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
 276                                                    enum irq_domain_bus_token bus_token);
 277 extern bool irq_domain_check_msi_remap(void);
 278 extern void irq_set_default_host(struct irq_domain *host);
 279 extern struct irq_domain *irq_get_default_host(void);
 280 extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs,
 281                                   irq_hw_number_t hwirq, int node,
 282                                   const struct irq_affinity_desc *affinity);
 283
 284 static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
 285 {
 286         return node ? &node->fwnode : NULL;
 287 }
 288
 289 extern const struct fwnode_operations irqchip_fwnode_ops;
 290
 291 static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode)
 292 {
 293         return fwnode && fwnode->ops == &irqchip_fwnode_ops;
 294 }
 295
 296 extern void irq_domain_update_bus_token(struct irq_domain *domain,
 297                                         enum irq_domain_bus_token bus_token);
 298
 299 static inline
 300 struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
 301                                             enum irq_domain_bus_token bus_token)
 302 {
 303         struct irq_fwspec fwspec = {
 304                 .fwnode = fwnode,
 305         };
 306
 307         return irq_find_matching_fwspec(&fwspec, bus_token);
 308 }
 309
 310 static inline struct irq_domain *irq_find_matching_host(struct device_node *node,
 311                                                         enum irq_domain_bus_token bus_token)
 312 {
 313         return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token);
 314 }
 315
 316 static inline struct irq_domain *irq_find_host(struct device_node *node)
 317 {
 318         struct irq_domain *d;
 319
 320         d = irq_find_matching_host(node, DOMAIN_BUS_WIRED);
 321         if (!d)
 322                 d = irq_find_matching_host(node, DOMAIN_BUS_ANY);
 323
 324         return d;
 325 }
 326
 327 static inline struct irq_domain *irq_domain_add_simple(struct device_node *of_node,
 328                                                        unsigned int size,
 329                                                        unsigned int first_irq,
 330                                                        const struct irq_domain_ops *ops,
 331                                                        void *host_data)
 332 {
 333         return irq_domain_create_simple(of_node_to_fwnode(of_node), size, first_irq, ops, host_data);
 334 }
 335
 336 /**
 337  * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
 338  * @of_node: pointer to interrupt controller's device tree node.
 339  * @size: Number of interrupts in the domain.
 340  * @ops: map/unmap domain callbacks
 341  * @host_data: Controller private data pointer
 342  */
 343 static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
 344                                          unsigned int size,
 345                                          const struct irq_domain_ops *ops,
 346                                          void *host_data)
 347 {
 348         return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data);
 349 }
 350
 351 #ifdef CONFIG_IRQ_DOMAIN_NOMAP
 352 static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
 353                                          unsigned int max_irq,
 354                                          const struct irq_domain_ops *ops,
 355                                          void *host_data)
 356 {
 357         return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data);
 358 }
 359
 360 extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
 361 #endif
 362
 363 static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
 364                                          const struct irq_domain_ops *ops,
 365                                          void *host_data)
 366 {
 367         return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data);
 368 }
 369
 370 static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode,
 371                                          unsigned int size,
 372                                          const struct irq_domain_ops *ops,
 373                                          void *host_data)
 374 {
 375         return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
 376 }
 377
 378 static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode,
 379                                          const struct irq_domain_ops *ops,
 380                                          void *host_data)
 381 {
 382         return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data);
 383 }
 384
 385 extern void irq_domain_remove(struct irq_domain *host);
 386
 387 extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
 388                                         irq_hw_number_t hwirq);
 389 extern void irq_domain_associate_many(struct irq_domain *domain,
 390                                       unsigned int irq_base,
 391                                       irq_hw_number_t hwirq_base, int count);
 392
 393 extern unsigned int irq_create_mapping_affinity(struct irq_domain *host,
 394                                       irq_hw_number_t hwirq,
 395                                       const struct irq_affinity_desc *affinity);
 396 extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
 397 extern void irq_dispose_mapping(unsigned int virq);
 398
 399 static inline unsigned int irq_create_mapping(struct irq_domain *host,
 400                                               irq_hw_number_t hwirq)
 401 {
 402         return irq_create_mapping_affinity(host, hwirq, NULL);
 403 }
 404
 405 extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain,
 406                                               irq_hw_number_t hwirq,
 407                                               unsigned int *irq);
 408
 409 static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain,
 410                                                    irq_hw_number_t hwirq)
 411 {
 412         return __irq_resolve_mapping(domain, hwirq, NULL);
 413 }
 414
 415 /**
 416  * irq_find_mapping() - Find a linux irq from a hw irq number.
 417  * @domain: domain owning this hardware interrupt
 418  * @hwirq: hardware irq number in that domain space
 419  */
 420 static inline unsigned int irq_find_mapping(struct irq_domain *domain,
 421                                             irq_hw_number_t hwirq)
 422 {
 423         unsigned int irq;
 424
 425         if (__irq_resolve_mapping(domain, hwirq, &irq))
 426                 return irq;
 427
 428         return 0;
 429 }
 430
 431 static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
 432                                              irq_hw_number_t hwirq)
 433 {
 434         return irq_find_mapping(domain, hwirq);
 435 }
 436
 437 extern const struct irq_domain_ops irq_domain_simple_ops;
 438
 439 /* stock xlate functions */
 440 int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr,
 441                         const u32 *intspec, unsigned int intsize,
 442                         irq_hw_number_t *out_hwirq, unsigned int *out_type);
 443 int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr,
 444                         const u32 *intspec, unsigned int intsize,
 445                         irq_hw_number_t *out_hwirq, unsigned int *out_type);
 446 int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
 447                         const u32 *intspec, unsigned int intsize,
 448                         irq_hw_number_t *out_hwirq, unsigned int *out_type);
 449
 450 int irq_domain_translate_twocell(struct irq_domain *d,
 451                                  struct irq_fwspec *fwspec,
 452                                  unsigned long *out_hwirq,
 453                                  unsigned int *out_type);
 454
 455 int irq_domain_translate_onecell(struct irq_domain *d,
 456                                  struct irq_fwspec *fwspec,
 457                                  unsigned long *out_hwirq,
 458                                  unsigned int *out_type);
 459
 460 /* IPI functions */
 461 int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
 462 int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
 463
 464 /* V2 interfaces to support hierarchy IRQ domains. */
 465 extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
 466                                                 unsigned int virq);
 467 extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
 468                                 irq_hw_number_t hwirq, struct irq_chip *chip,
 469                                 void *chip_data, irq_flow_handler_t handler,
 470                                 void *handler_data, const char *handler_name);
 471 extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
 472 #ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
 473 extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
 474                         unsigned int flags, unsigned int size,
 475                         struct fwnode_handle *fwnode,
 476                         const struct irq_domain_ops *ops, void *host_data);
 477
 478 static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
 479                                             unsigned int flags,
 480                                             unsigned int size,
 481                                             struct device_node *node,
 482                                             const struct irq_domain_ops *ops,
 483                                             void *host_data)
 484 {
 485         return irq_domain_create_hierarchy(parent, flags, size,
 486                                            of_node_to_fwnode(node),
 487                                            ops, host_data);
 488 }
 489
 490 extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
 491                                    unsigned int nr_irqs, int node, void *arg,
 492                                    bool realloc,
 493                                    const struct irq_affinity_desc *affinity);
 494 extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
 495 extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early);
 496 extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
 497
 498 static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
 499                         unsigned int nr_irqs, int node, void *arg)
 500 {
 501         return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false,
 502                                        NULL);
 503 }
 504
 505 extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
 506                                            unsigned int irq_base,
 507                                            unsigned int nr_irqs, void *arg);
 508 extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
 509                                          unsigned int virq,
 510                                          irq_hw_number_t hwirq,
 511                                          struct irq_chip *chip,
 512                                          void *chip_data);
 513 extern void irq_domain_free_irqs_common(struct irq_domain *domain,
 514                                         unsigned int virq,
 515                                         unsigned int nr_irqs);
 516 extern void irq_domain_free_irqs_top(struct irq_domain *domain,
 517                                      unsigned int virq, unsigned int nr_irqs);
 518
 519 extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg);
 520 extern int irq_domain_pop_irq(struct irq_domain *domain, int virq);
 521
 522 extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
 523                                         unsigned int irq_base,
 524                                         unsigned int nr_irqs, void *arg);
 525
 526 extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
 527                                         unsigned int irq_base,
 528                                         unsigned int nr_irqs);
 529
 530 extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain,
 531                                            unsigned int virq);
 532
 533 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
 534 {
 535         return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
 536 }
 537
 538 static inline bool irq_domain_is_ipi(struct irq_domain *domain)
 539 {
 540         return domain->flags &
 541                 (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE);
 542 }
 543
 544 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
 545 {
 546         return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU;
 547 }
 548
 549 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
 550 {
 551         return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE;
 552 }
 553
 554 static inline bool irq_domain_is_msi(struct irq_domain *domain)
 555 {
 556         return domain->flags & IRQ_DOMAIN_FLAG_MSI;
 557 }
 558
 559 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
 560 {
 561         return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP;
 562 }
 563
 564 extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain);
 565
 566 #else   /* CONFIG_IRQ_DOMAIN_HIERARCHY */
 567 static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
 568                         unsigned int nr_irqs, int node, void *arg)
 569 {
 570         return -1;
 571 }
 572
 573 static inline void irq_domain_free_irqs(unsigned int virq,
 574                                         unsigned int nr_irqs) { }
 575
 576 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
 577 {
 578         return false;
 579 }
 580
 581 static inline bool irq_domain_is_ipi(struct irq_domain *domain)
 582 {
 583         return false;
 584 }
 585
 586 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
 587 {
 588         return false;
 589 }
 590
 591 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
 592 {
 593         return false;
 594 }
 595
 596 static inline bool irq_domain_is_msi(struct irq_domain *domain)
 597 {
 598         return false;
 599 }
 600
 601 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
 602 {
 603         return false;
 604 }
 605
 606 static inline bool
 607 irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain)
 608 {
 609         return false;
 610 }
 611 #endif  /* CONFIG_IRQ_DOMAIN_HIERARCHY */
 612
 613 #else /* CONFIG_IRQ_DOMAIN */
 614 static inline void irq_dispose_mapping(unsigned int virq) { }
 615 static inline struct irq_domain *irq_find_matching_fwnode(
 616         struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token)
 617 {
 618         return NULL;
 619 }
 620 static inline bool irq_domain_check_msi_remap(void)
 621 {
 622         return false;
 623 }
 624 #endif /* !CONFIG_IRQ_DOMAIN */
 625
 626 #endif /* _LINUX_IRQDOMAIN_H */