root/include/linux/irqdomain.h

INCLUDED FROM

DEFINITIONS

1. irq_domain_get_of_node
2. irq_domain_alloc_named_fwnode
3. irq_domain_alloc_named_id_fwnode
4. irq_domain_alloc_fwnode
5. of_node_to_fwnode
6. is_fwnode_irqchip
7. irq_find_matching_fwnode
8. irq_find_matching_host
9. irq_find_host
10. irq_domain_add_linear
11. irq_domain_add_nomap
12. irq_domain_add_legacy_isa
13. irq_domain_add_tree
14. irq_domain_create_linear
15. irq_domain_create_tree
16. irq_linear_revmap
17. irq_create_identity_mapping
18. irq_domain_add_hierarchy
19. irq_domain_alloc_irqs
20. irq_domain_is_hierarchy
21. irq_domain_is_ipi
22. irq_domain_is_ipi_per_cpu
23. irq_domain_is_ipi_single
24. irq_domain_is_msi
25. irq_domain_is_msi_remap
26. irq_domain_alloc_irqs
27. irq_domain_free_irqs
28. irq_domain_is_hierarchy
29. irq_domain_is_ipi
30. irq_domain_is_ipi_per_cpu
31. irq_domain_is_ipi_single
32. irq_domain_is_msi
33. irq_domain_is_msi_remap
34. irq_domain_hierarchical_is_msi_remap
35. irq_dispose_mapping
36. irq_find_matching_fwnode
37. irq_domain_check_msi_remap

   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 irq_domain;
  41 struct of_device_id;
  42 struct irq_chip;
  43 struct irq_data;
  44 struct cpumask;
  45 struct seq_file;
  46 struct irq_affinity_desc;
  47 
  48 /* Number of irqs reserved for a legacy isa controller */
  49 #define NUM_ISA_INTERRUPTS      16
  50 
  51 #define IRQ_DOMAIN_IRQ_SPEC_PARAMS 16
  52 
  53 /**
  54  * struct irq_fwspec - generic IRQ specifier structure
  55  *
  56  * @fwnode:             Pointer to a firmware-specific descriptor
  57  * @param_count:        Number of device-specific parameters
  58  * @param:              Device-specific parameters
  59  *
  60  * This structure, directly modeled after of_phandle_args, is used to
  61  * pass a device-specific description of an interrupt.
  62  */
  63 struct irq_fwspec {
  64         struct fwnode_handle *fwnode;
  65         int param_count;
  66         u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS];
  67 };
  68 
  69 /*
  70  * Should several domains have the same device node, but serve
  71  * different purposes (for example one domain is for PCI/MSI, and the
  72  * other for wired IRQs), they can be distinguished using a
  73  * bus-specific token. Most domains are expected to only carry
  74  * DOMAIN_BUS_ANY.
  75  */
  76 enum irq_domain_bus_token {
  77         DOMAIN_BUS_ANY          = 0,
  78         DOMAIN_BUS_WIRED,
  79         DOMAIN_BUS_GENERIC_MSI,
  80         DOMAIN_BUS_PCI_MSI,
  81         DOMAIN_BUS_PLATFORM_MSI,
  82         DOMAIN_BUS_NEXUS,
  83         DOMAIN_BUS_IPI,
  84         DOMAIN_BUS_FSL_MC_MSI,
  85         DOMAIN_BUS_TI_SCI_INTA_MSI,
  86 };
  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  * @debugfs_file: dentry for the domain debugfs file
 152  *
 153  * Revmap data, used internally by irq_domain
 154  * @revmap_direct_max_irq: The largest hwirq that can be set for controllers that
 155  *                         support direct mapping
 156  * @revmap_size: Size of the linear map table @linear_revmap[]
 157  * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map
 158  * @linear_revmap: Linear table of hwirq->virq reverse mappings
 159  */
 160 struct irq_domain {
 161         struct list_head link;
 162         const char *name;
 163         const struct irq_domain_ops *ops;
 164         void *host_data;
 165         unsigned int flags;
 166         unsigned int mapcount;
 167 
 168         /* Optional data */
 169         struct fwnode_handle *fwnode;
 170         enum irq_domain_bus_token bus_token;
 171         struct irq_domain_chip_generic *gc;
 172 #ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
 173         struct irq_domain *parent;
 174 #endif
 175 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS
 176         struct dentry           *debugfs_file;
 177 #endif
 178 
 179         /* reverse map data. The linear map gets appended to the irq_domain */
 180         irq_hw_number_t hwirq_max;
 181         unsigned int revmap_direct_max_irq;
 182         unsigned int revmap_size;
 183         struct radix_tree_root revmap_tree;
 184         struct mutex revmap_tree_mutex;
 185         unsigned int linear_revmap[];
 186 };
 187 
 188 /* Irq domain flags */
 189 enum {
 190         /* Irq domain is hierarchical */
 191         IRQ_DOMAIN_FLAG_HIERARCHY       = (1 << 0),
 192 
 193         /* Irq domain name was allocated in __irq_domain_add() */
 194         IRQ_DOMAIN_NAME_ALLOCATED       = (1 << 1),
 195 
 196         /* Irq domain is an IPI domain with virq per cpu */
 197         IRQ_DOMAIN_FLAG_IPI_PER_CPU     = (1 << 2),
 198 
 199         /* Irq domain is an IPI domain with single virq */
 200         IRQ_DOMAIN_FLAG_IPI_SINGLE      = (1 << 3),
 201 
 202         /* Irq domain implements MSIs */
 203         IRQ_DOMAIN_FLAG_MSI             = (1 << 4),
 204 
 205         /* Irq domain implements MSI remapping */
 206         IRQ_DOMAIN_FLAG_MSI_REMAP       = (1 << 5),
 207 
 208         /*
 209          * Quirk to handle MSI implementations which do not provide
 210          * masking. Currently known to affect x86, but partially
 211          * handled in core code.
 212          */
 213         IRQ_DOMAIN_MSI_NOMASK_QUIRK     = (1 << 6),
 214 
 215         /*
 216          * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
 217          * for implementation specific purposes and ignored by the
 218          * core code.
 219          */
 220         IRQ_DOMAIN_FLAG_NONCORE         = (1 << 16),
 221 };
 222 
 223 static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
 224 {
 225         return to_of_node(d->fwnode);
 226 }
 227 
 228 #ifdef CONFIG_IRQ_DOMAIN
 229 struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
 230                                                 const char *name, phys_addr_t *pa);
 231 
 232 enum {
 233         IRQCHIP_FWNODE_REAL,
 234         IRQCHIP_FWNODE_NAMED,
 235         IRQCHIP_FWNODE_NAMED_ID,
 236 };
 237 
 238 static inline
 239 struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name)
 240 {
 241         return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL);
 242 }
 243 
 244 static inline
 245 struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id)
 246 {
 247         return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name,
 248                                          NULL);
 249 }
 250 
 251 static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa)
 252 {
 253         return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa);
 254 }
 255 
 256 void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
 257 struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
 258                                     irq_hw_number_t hwirq_max, int direct_max,
 259                                     const struct irq_domain_ops *ops,
 260                                     void *host_data);
 261 struct irq_domain *irq_domain_add_simple(struct device_node *of_node,
 262                                          unsigned int size,
 263                                          unsigned int first_irq,
 264                                          const struct irq_domain_ops *ops,
 265                                          void *host_data);
 266 struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
 267                                          unsigned int size,
 268                                          unsigned int first_irq,
 269                                          irq_hw_number_t first_hwirq,
 270                                          const struct irq_domain_ops *ops,
 271                                          void *host_data);
 272 extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
 273                                                    enum irq_domain_bus_token bus_token);
 274 extern bool irq_domain_check_msi_remap(void);
 275 extern void irq_set_default_host(struct irq_domain *host);
 276 extern struct irq_domain *irq_get_default_host(void);
 277 extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs,
 278                                   irq_hw_number_t hwirq, int node,
 279                                   const struct irq_affinity_desc *affinity);
 280 
 281 static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
 282 {
 283         return node ? &node->fwnode : NULL;
 284 }
 285 
 286 extern const struct fwnode_operations irqchip_fwnode_ops;
 287 
 288 static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode)
 289 {
 290         return fwnode && fwnode->ops == &irqchip_fwnode_ops;
 291 }
 292 
 293 extern void irq_domain_update_bus_token(struct irq_domain *domain,
 294                                         enum irq_domain_bus_token bus_token);
 295 
 296 static inline
 297 struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
 298                                             enum irq_domain_bus_token bus_token)
 299 {
 300         struct irq_fwspec fwspec = {
 301                 .fwnode = fwnode,
 302         };
 303 
 304         return irq_find_matching_fwspec(&fwspec, bus_token);
 305 }
 306 
 307 static inline struct irq_domain *irq_find_matching_host(struct device_node *node,
 308                                                         enum irq_domain_bus_token bus_token)
 309 {
 310         return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token);
 311 }
 312 
 313 static inline struct irq_domain *irq_find_host(struct device_node *node)
 314 {
 315         struct irq_domain *d;
 316 
 317         d = irq_find_matching_host(node, DOMAIN_BUS_WIRED);
 318         if (!d)
 319                 d = irq_find_matching_host(node, DOMAIN_BUS_ANY);
 320 
 321         return d;
 322 }
 323 
 324 /**
 325  * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
 326  * @of_node: pointer to interrupt controller's device tree node.
 327  * @size: Number of interrupts in the domain.
 328  * @ops: map/unmap domain callbacks
 329  * @host_data: Controller private data pointer
 330  */
 331 static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
 332                                          unsigned int size,
 333                                          const struct irq_domain_ops *ops,
 334                                          void *host_data)
 335 {
 336         return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data);
 337 }
 338 static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
 339                                          unsigned int max_irq,
 340                                          const struct irq_domain_ops *ops,
 341                                          void *host_data)
 342 {
 343         return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data);
 344 }
 345 static inline struct irq_domain *irq_domain_add_legacy_isa(
 346                                 struct device_node *of_node,
 347                                 const struct irq_domain_ops *ops,
 348                                 void *host_data)
 349 {
 350         return irq_domain_add_legacy(of_node, NUM_ISA_INTERRUPTS, 0, 0, ops,
 351                                      host_data);
 352 }
 353 static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
 354                                          const struct irq_domain_ops *ops,
 355                                          void *host_data)
 356 {
 357         return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data);
 358 }
 359 
 360 static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode,
 361                                          unsigned int size,
 362                                          const struct irq_domain_ops *ops,
 363                                          void *host_data)
 364 {
 365         return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
 366 }
 367 
 368 static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode,
 369                                          const struct irq_domain_ops *ops,
 370                                          void *host_data)
 371 {
 372         return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data);
 373 }
 374 
 375 extern void irq_domain_remove(struct irq_domain *host);
 376 
 377 extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
 378                                         irq_hw_number_t hwirq);
 379 extern void irq_domain_associate_many(struct irq_domain *domain,
 380                                       unsigned int irq_base,
 381                                       irq_hw_number_t hwirq_base, int count);
 382 extern void irq_domain_disassociate(struct irq_domain *domain,
 383                                     unsigned int irq);
 384 
 385 extern unsigned int irq_create_mapping(struct irq_domain *host,
 386                                        irq_hw_number_t hwirq);
 387 extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
 388 extern void irq_dispose_mapping(unsigned int virq);
 389 
 390 /**
 391  * irq_linear_revmap() - Find a linux irq from a hw irq number.
 392  * @domain: domain owning this hardware interrupt
 393  * @hwirq: hardware irq number in that domain space
 394  *
 395  * This is a fast path alternative to irq_find_mapping() that can be
 396  * called directly by irq controller code to save a handful of
 397  * instructions. It is always safe to call, but won't find irqs mapped
 398  * using the radix tree.
 399  */
 400 static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
 401                                              irq_hw_number_t hwirq)
 402 {
 403         return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0;
 404 }
 405 extern unsigned int irq_find_mapping(struct irq_domain *host,
 406                                      irq_hw_number_t hwirq);
 407 extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
 408 extern int irq_create_strict_mappings(struct irq_domain *domain,
 409                                       unsigned int irq_base,
 410                                       irq_hw_number_t hwirq_base, int count);
 411 
 412 static inline int irq_create_identity_mapping(struct irq_domain *host,
 413                                               irq_hw_number_t hwirq)
 414 {
 415         return irq_create_strict_mappings(host, hwirq, hwirq, 1);
 416 }
 417 
 418 extern const struct irq_domain_ops irq_domain_simple_ops;
 419 
 420 /* stock xlate functions */
 421 int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr,
 422                         const u32 *intspec, unsigned int intsize,
 423                         irq_hw_number_t *out_hwirq, unsigned int *out_type);
 424 int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr,
 425                         const u32 *intspec, unsigned int intsize,
 426                         irq_hw_number_t *out_hwirq, unsigned int *out_type);
 427 int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
 428                         const u32 *intspec, unsigned int intsize,
 429                         irq_hw_number_t *out_hwirq, unsigned int *out_type);
 430 
 431 int irq_domain_translate_twocell(struct irq_domain *d,
 432                                  struct irq_fwspec *fwspec,
 433                                  unsigned long *out_hwirq,
 434                                  unsigned int *out_type);
 435 
 436 /* IPI functions */
 437 int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
 438 int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
 439 
 440 /* V2 interfaces to support hierarchy IRQ domains. */
 441 extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
 442                                                 unsigned int virq);
 443 extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
 444                                 irq_hw_number_t hwirq, struct irq_chip *chip,
 445                                 void *chip_data, irq_flow_handler_t handler,
 446                                 void *handler_data, const char *handler_name);
 447 #ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
 448 extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
 449                         unsigned int flags, unsigned int size,
 450                         struct fwnode_handle *fwnode,
 451                         const struct irq_domain_ops *ops, void *host_data);
 452 
 453 static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
 454                                             unsigned int flags,
 455                                             unsigned int size,
 456                                             struct device_node *node,
 457                                             const struct irq_domain_ops *ops,
 458                                             void *host_data)
 459 {
 460         return irq_domain_create_hierarchy(parent, flags, size,
 461                                            of_node_to_fwnode(node),
 462                                            ops, host_data);
 463 }
 464 
 465 extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
 466                                    unsigned int nr_irqs, int node, void *arg,
 467                                    bool realloc,
 468                                    const struct irq_affinity_desc *affinity);
 469 extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
 470 extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early);
 471 extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
 472 
 473 static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
 474                         unsigned int nr_irqs, int node, void *arg)
 475 {
 476         return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false,
 477                                        NULL);
 478 }
 479 
 480 extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
 481                                            unsigned int irq_base,
 482                                            unsigned int nr_irqs, void *arg);
 483 extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
 484                                          unsigned int virq,
 485                                          irq_hw_number_t hwirq,
 486                                          struct irq_chip *chip,
 487                                          void *chip_data);
 488 extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
 489 extern void irq_domain_free_irqs_common(struct irq_domain *domain,
 490                                         unsigned int virq,
 491                                         unsigned int nr_irqs);
 492 extern void irq_domain_free_irqs_top(struct irq_domain *domain,
 493                                      unsigned int virq, unsigned int nr_irqs);
 494 
 495 extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg);
 496 extern int irq_domain_pop_irq(struct irq_domain *domain, int virq);
 497 
 498 extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
 499                                         unsigned int irq_base,
 500                                         unsigned int nr_irqs, void *arg);
 501 
 502 extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
 503                                         unsigned int irq_base,
 504                                         unsigned int nr_irqs);
 505 
 506 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
 507 {
 508         return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
 509 }
 510 
 511 static inline bool irq_domain_is_ipi(struct irq_domain *domain)
 512 {
 513         return domain->flags &
 514                 (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE);
 515 }
 516 
 517 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
 518 {
 519         return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU;
 520 }
 521 
 522 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
 523 {
 524         return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE;
 525 }
 526 
 527 static inline bool irq_domain_is_msi(struct irq_domain *domain)
 528 {
 529         return domain->flags & IRQ_DOMAIN_FLAG_MSI;
 530 }
 531 
 532 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
 533 {
 534         return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP;
 535 }
 536 
 537 extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain);
 538 
 539 #else   /* CONFIG_IRQ_DOMAIN_HIERARCHY */
 540 static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
 541                         unsigned int nr_irqs, int node, void *arg)
 542 {
 543         return -1;
 544 }
 545 
 546 static inline void irq_domain_free_irqs(unsigned int virq,
 547                                         unsigned int nr_irqs) { }
 548 
 549 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
 550 {
 551         return false;
 552 }
 553 
 554 static inline bool irq_domain_is_ipi(struct irq_domain *domain)
 555 {
 556         return false;
 557 }
 558 
 559 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
 560 {
 561         return false;
 562 }
 563 
 564 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
 565 {
 566         return false;
 567 }
 568 
 569 static inline bool irq_domain_is_msi(struct irq_domain *domain)
 570 {
 571         return false;
 572 }
 573 
 574 static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
 575 {
 576         return false;
 577 }
 578 
 579 static inline bool
 580 irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain)
 581 {
 582         return false;
 583 }
 584 #endif  /* CONFIG_IRQ_DOMAIN_HIERARCHY */
 585 
 586 #else /* CONFIG_IRQ_DOMAIN */
 587 static inline void irq_dispose_mapping(unsigned int virq) { }
 588 static inline struct irq_domain *irq_find_matching_fwnode(
 589         struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token)
 590 {
 591         return NULL;
 592 }
 593 static inline bool irq_domain_check_msi_remap(void)
 594 {
 595         return false;
 596 }
 597 #endif /* !CONFIG_IRQ_DOMAIN */
 598 
 599 #endif /* _LINUX_IRQDOMAIN_H */