Line data Source code
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 :
40 : struct device_node;
41 : struct fwnode_handle;
42 : struct irq_domain;
43 : struct irq_chip;
44 : struct irq_data;
45 : struct irq_desc;
46 : struct cpumask;
47 : struct seq_file;
48 : struct irq_affinity_desc;
49 : struct 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 : */
63 : struct 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 */
70 : void 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 : */
88 : struct 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 :
115 : extern const struct irq_domain_ops irq_generic_chip_ops;
116 :
117 : struct 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 : */
150 : struct 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[];
178 : };
179 :
180 : /* Irq domain flags */
181 : enum {
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 :
219 : static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
220 : {
221 0 : return to_of_node(d->fwnode);
222 : }
223 :
224 : static 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
232 : struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
233 : const char *name, phys_addr_t *pa);
234 :
235 : enum {
236 : IRQCHIP_FWNODE_REAL,
237 : IRQCHIP_FWNODE_NAMED,
238 : IRQCHIP_FWNODE_NAMED_ID,
239 : };
240 :
241 : static inline
242 : struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name)
243 : {
244 0 : return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL);
245 : }
246 :
247 : static inline
248 : struct 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 :
254 : static 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 :
259 : void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
260 : struct 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);
264 : struct 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);
269 : struct 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);
275 : struct 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);
281 : extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
282 : enum irq_domain_bus_token bus_token);
283 : extern void irq_set_default_host(struct irq_domain *host);
284 : extern struct irq_domain *irq_get_default_host(void);
285 : extern 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 :
289 : static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
290 : {
291 0 : return node ? &node->fwnode : NULL;
292 : }
293 :
294 : extern const struct fwnode_operations irqchip_fwnode_ops;
295 :
296 : static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode)
297 : {
298 0 : return fwnode && fwnode->ops == &irqchip_fwnode_ops;
299 : }
300 :
301 : extern void irq_domain_update_bus_token(struct irq_domain *domain,
302 : enum irq_domain_bus_token bus_token);
303 :
304 : static inline
305 : struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
306 : enum irq_domain_bus_token bus_token)
307 : {
308 0 : struct irq_fwspec fwspec = {
309 : .fwnode = fwnode,
310 : };
311 :
312 0 : return irq_find_matching_fwspec(&fwspec, bus_token);
313 : }
314 :
315 : static 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 :
321 : static 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 :
332 : static 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 : */
348 : static 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
357 : static 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 :
365 : extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
366 : #endif
367 :
368 : static 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 :
375 : static 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 0 : return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
381 : }
382 :
383 : static 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 :
390 : extern void irq_domain_remove(struct irq_domain *host);
391 :
392 : extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
393 : irq_hw_number_t hwirq);
394 : extern void irq_domain_associate_many(struct irq_domain *domain,
395 : unsigned int irq_base,
396 : irq_hw_number_t hwirq_base, int count);
397 :
398 : extern unsigned int irq_create_mapping_affinity(struct irq_domain *host,
399 : irq_hw_number_t hwirq,
400 : const struct irq_affinity_desc *affinity);
401 : extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
402 : extern void irq_dispose_mapping(unsigned int virq);
403 :
404 : static inline unsigned int irq_create_mapping(struct irq_domain *host,
405 : irq_hw_number_t hwirq)
406 : {
407 0 : return irq_create_mapping_affinity(host, hwirq, NULL);
408 : }
409 :
410 : extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain,
411 : irq_hw_number_t hwirq,
412 : unsigned int *irq);
413 :
414 : static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain,
415 : irq_hw_number_t hwirq)
416 : {
417 0 : 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 : */
425 : static inline unsigned int irq_find_mapping(struct irq_domain *domain,
426 : irq_hw_number_t hwirq)
427 : {
428 : unsigned int irq;
429 :
430 0 : if (__irq_resolve_mapping(domain, hwirq, &irq))
431 0 : return irq;
432 :
433 : return 0;
434 : }
435 :
436 : static 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 :
442 : extern const struct irq_domain_ops irq_domain_simple_ops;
443 :
444 : /* stock xlate functions */
445 : int 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);
448 : int 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);
451 : int 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 :
455 : int irq_domain_translate_twocell(struct irq_domain *d,
456 : struct irq_fwspec *fwspec,
457 : unsigned long *out_hwirq,
458 : unsigned int *out_type);
459 :
460 : int 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 */
466 : int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
467 : int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
468 :
469 : /* V2 interfaces to support hierarchy IRQ domains. */
470 : extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
471 : unsigned int virq);
472 : extern 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);
477 : extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
478 : #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
479 : extern 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 :
484 : static 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 :
496 : extern 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);
500 : extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
501 : extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early);
502 : extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
503 :
504 : static 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 :
511 : extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
512 : unsigned int irq_base,
513 : unsigned int nr_irqs, void *arg);
514 : extern 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);
519 : extern void irq_domain_free_irqs_common(struct irq_domain *domain,
520 : unsigned int virq,
521 : unsigned int nr_irqs);
522 : extern void irq_domain_free_irqs_top(struct irq_domain *domain,
523 : unsigned int virq, unsigned int nr_irqs);
524 :
525 : extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg);
526 : extern int irq_domain_pop_irq(struct irq_domain *domain, int virq);
527 :
528 : extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
529 : unsigned int irq_base,
530 : unsigned int nr_irqs, void *arg);
531 :
532 : extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
533 : unsigned int irq_base,
534 : unsigned int nr_irqs);
535 :
536 : extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain,
537 : unsigned int virq);
538 :
539 : static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
540 : {
541 0 : return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
542 : }
543 :
544 : static 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 :
550 : static 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 :
555 : static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
556 : {
557 : return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE;
558 : }
559 :
560 : static inline bool irq_domain_is_msi(struct irq_domain *domain)
561 : {
562 : return domain->flags & IRQ_DOMAIN_FLAG_MSI;
563 : }
564 :
565 : static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
566 : {
567 0 : return domain->flags & IRQ_DOMAIN_FLAG_MSI_PARENT;
568 : }
569 :
570 : static inline bool irq_domain_is_msi_device(struct irq_domain *domain)
571 : {
572 0 : return domain->flags & IRQ_DOMAIN_FLAG_MSI_DEVICE;
573 : }
574 :
575 : #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
576 : static 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 :
582 : static inline void irq_domain_free_irqs(unsigned int virq,
583 : unsigned int nr_irqs) { }
584 :
585 : static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
586 : {
587 : return false;
588 : }
589 :
590 : static inline bool irq_domain_is_ipi(struct irq_domain *domain)
591 : {
592 : return false;
593 : }
594 :
595 : static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
596 : {
597 : return false;
598 : }
599 :
600 : static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
601 : {
602 : return false;
603 : }
604 :
605 : static inline bool irq_domain_is_msi(struct irq_domain *domain)
606 : {
607 : return false;
608 : }
609 :
610 : static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
611 : {
612 : return false;
613 : }
614 :
615 : static 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 : #else /* CONFIG_IRQ_DOMAIN */
623 : static inline void irq_dispose_mapping(unsigned int virq) { }
624 : static inline struct irq_domain *irq_find_matching_fwnode(
625 : struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token)
626 : {
627 : return NULL;
628 : }
629 : #endif /* !CONFIG_IRQ_DOMAIN */
630 :
631 : #endif /* _LINUX_IRQDOMAIN_H */
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