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/irqhandler.h>
35 : #include <linux/of.h>
36 : #include <linux/mutex.h>
37 : #include <linux/radix-tree.h>
38 :
39 : struct device_node;
40 : struct fwnode_handle;
41 : struct irq_domain;
42 : struct irq_chip;
43 : struct irq_data;
44 : struct irq_desc;
45 : struct cpumask;
46 : struct seq_file;
47 : struct irq_affinity_desc;
48 :
49 : #define IRQ_DOMAIN_IRQ_SPEC_PARAMS 16
50 :
51 : /**
52 : * struct irq_fwspec - generic IRQ specifier structure
53 : *
54 : * @fwnode: Pointer to a firmware-specific descriptor
55 : * @param_count: Number of device-specific parameters
56 : * @param: Device-specific parameters
57 : *
58 : * This structure, directly modeled after of_phandle_args, is used to
59 : * pass a device-specific description of an interrupt.
60 : */
61 : struct irq_fwspec {
62 : struct fwnode_handle *fwnode;
63 : int param_count;
64 : u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS];
65 : };
66 :
67 : /* Conversion function from of_phandle_args fields to fwspec */
68 : void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args,
69 : unsigned int count, struct irq_fwspec *fwspec);
70 :
71 : /*
72 : * Should several domains have the same device node, but serve
73 : * different purposes (for example one domain is for PCI/MSI, and the
74 : * other for wired IRQs), they can be distinguished using a
75 : * bus-specific token. Most domains are expected to only carry
76 : * DOMAIN_BUS_ANY.
77 : */
78 : enum irq_domain_bus_token {
79 : DOMAIN_BUS_ANY = 0,
80 : DOMAIN_BUS_WIRED,
81 : DOMAIN_BUS_GENERIC_MSI,
82 : DOMAIN_BUS_PCI_MSI,
83 : DOMAIN_BUS_PLATFORM_MSI,
84 : DOMAIN_BUS_NEXUS,
85 : DOMAIN_BUS_IPI,
86 : DOMAIN_BUS_FSL_MC_MSI,
87 : DOMAIN_BUS_TI_SCI_INTA_MSI,
88 : DOMAIN_BUS_WAKEUP,
89 : DOMAIN_BUS_VMD_MSI,
90 : };
91 :
92 : /**
93 : * struct irq_domain_ops - Methods for irq_domain objects
94 : * @match: Match an interrupt controller device node to a host, returns
95 : * 1 on a match
96 : * @map: Create or update a mapping between a virtual irq number and a hw
97 : * irq number. This is called only once for a given mapping.
98 : * @unmap: Dispose of such a mapping
99 : * @xlate: Given a device tree node and interrupt specifier, decode
100 : * the hardware irq number and linux irq type value.
101 : *
102 : * Functions below are provided by the driver and called whenever a new mapping
103 : * is created or an old mapping is disposed. The driver can then proceed to
104 : * whatever internal data structures management is required. It also needs
105 : * to setup the irq_desc when returning from map().
106 : */
107 : struct irq_domain_ops {
108 : int (*match)(struct irq_domain *d, struct device_node *node,
109 : enum irq_domain_bus_token bus_token);
110 : int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec,
111 : enum irq_domain_bus_token bus_token);
112 : int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw);
113 : void (*unmap)(struct irq_domain *d, unsigned int virq);
114 : int (*xlate)(struct irq_domain *d, struct device_node *node,
115 : const u32 *intspec, unsigned int intsize,
116 : unsigned long *out_hwirq, unsigned int *out_type);
117 : #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
118 : /* extended V2 interfaces to support hierarchy irq_domains */
119 : int (*alloc)(struct irq_domain *d, unsigned int virq,
120 : unsigned int nr_irqs, void *arg);
121 : void (*free)(struct irq_domain *d, unsigned int virq,
122 : unsigned int nr_irqs);
123 : int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve);
124 : void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data);
125 : int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec,
126 : unsigned long *out_hwirq, unsigned int *out_type);
127 : #endif
128 : #ifdef CONFIG_GENERIC_IRQ_DEBUGFS
129 : void (*debug_show)(struct seq_file *m, struct irq_domain *d,
130 : struct irq_data *irqd, int ind);
131 : #endif
132 : };
133 :
134 : extern const struct irq_domain_ops irq_generic_chip_ops;
135 :
136 : struct irq_domain_chip_generic;
137 :
138 : /**
139 : * struct irq_domain - Hardware interrupt number translation object
140 : * @link: Element in global irq_domain list.
141 : * @name: Name of interrupt domain
142 : * @ops: pointer to irq_domain methods
143 : * @host_data: private data pointer for use by owner. Not touched by irq_domain
144 : * core code.
145 : * @flags: host per irq_domain flags
146 : * @mapcount: The number of mapped interrupts
147 : *
148 : * Optional elements
149 : * @fwnode: Pointer to firmware node associated with the irq_domain. Pretty easy
150 : * to swap it for the of_node via the irq_domain_get_of_node accessor
151 : * @gc: Pointer to a list of generic chips. There is a helper function for
152 : * setting up one or more generic chips for interrupt controllers
153 : * drivers using the generic chip library which uses this pointer.
154 : * @dev: Pointer to a device that the domain represent, and that will be
155 : * used for power management purposes.
156 : * @parent: Pointer to parent irq_domain to support hierarchy irq_domains
157 : *
158 : * Revmap data, used internally by irq_domain
159 : * @revmap_size: Size of the linear map table @revmap[]
160 : * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map
161 : * @revmap_mutex: Lock for the revmap
162 : * @revmap: Linear table of irq_data pointers
163 : */
164 : struct irq_domain {
165 : struct list_head link;
166 : const char *name;
167 : const struct irq_domain_ops *ops;
168 : void *host_data;
169 : unsigned int flags;
170 : unsigned int mapcount;
171 :
172 : /* Optional data */
173 : struct fwnode_handle *fwnode;
174 : enum irq_domain_bus_token bus_token;
175 : struct irq_domain_chip_generic *gc;
176 : struct device *dev;
177 : #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
178 : struct irq_domain *parent;
179 : #endif
180 :
181 : /* reverse map data. The linear map gets appended to the irq_domain */
182 : irq_hw_number_t hwirq_max;
183 : unsigned int revmap_size;
184 : struct radix_tree_root revmap_tree;
185 : struct mutex revmap_mutex;
186 : struct irq_data __rcu *revmap[];
187 : };
188 :
189 : /* Irq domain flags */
190 : enum {
191 : /* Irq domain is hierarchical */
192 : IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0),
193 :
194 : /* Irq domain name was allocated in __irq_domain_add() */
195 : IRQ_DOMAIN_NAME_ALLOCATED = (1 << 1),
196 :
197 : /* Irq domain is an IPI domain with virq per cpu */
198 : IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2),
199 :
200 : /* Irq domain is an IPI domain with single virq */
201 : IRQ_DOMAIN_FLAG_IPI_SINGLE = (1 << 3),
202 :
203 : /* Irq domain implements MSIs */
204 : IRQ_DOMAIN_FLAG_MSI = (1 << 4),
205 :
206 : /* Irq domain implements MSI remapping */
207 : IRQ_DOMAIN_FLAG_MSI_REMAP = (1 << 5),
208 :
209 : /*
210 : * Quirk to handle MSI implementations which do not provide
211 : * masking. Currently known to affect x86, but partially
212 : * handled in core code.
213 : */
214 : IRQ_DOMAIN_MSI_NOMASK_QUIRK = (1 << 6),
215 :
216 : /* Irq domain doesn't translate anything */
217 : IRQ_DOMAIN_FLAG_NO_MAP = (1 << 7),
218 :
219 : /*
220 : * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
221 : * for implementation specific purposes and ignored by the
222 : * core code.
223 : */
224 : IRQ_DOMAIN_FLAG_NONCORE = (1 << 16),
225 : };
226 :
227 : static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
228 : {
229 0 : return to_of_node(d->fwnode);
230 : }
231 :
232 : static inline void irq_domain_set_pm_device(struct irq_domain *d,
233 : struct device *dev)
234 : {
235 : if (d)
236 : d->dev = dev;
237 : }
238 :
239 : #ifdef CONFIG_IRQ_DOMAIN
240 : struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
241 : const char *name, phys_addr_t *pa);
242 :
243 : enum {
244 : IRQCHIP_FWNODE_REAL,
245 : IRQCHIP_FWNODE_NAMED,
246 : IRQCHIP_FWNODE_NAMED_ID,
247 : };
248 :
249 : static inline
250 : struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name)
251 : {
252 : return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL);
253 : }
254 :
255 : static inline
256 : struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id)
257 : {
258 : return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name,
259 : NULL);
260 : }
261 :
262 : static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa)
263 : {
264 : return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa);
265 : }
266 :
267 : void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
268 : struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, unsigned int size,
269 : irq_hw_number_t hwirq_max, int direct_max,
270 : const struct irq_domain_ops *ops,
271 : void *host_data);
272 : struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode,
273 : unsigned int size,
274 : unsigned int first_irq,
275 : const struct irq_domain_ops *ops,
276 : void *host_data);
277 : struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
278 : unsigned int size,
279 : unsigned int first_irq,
280 : irq_hw_number_t first_hwirq,
281 : const struct irq_domain_ops *ops,
282 : void *host_data);
283 : struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode,
284 : unsigned int size,
285 : unsigned int first_irq,
286 : irq_hw_number_t first_hwirq,
287 : const struct irq_domain_ops *ops,
288 : void *host_data);
289 : extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
290 : enum irq_domain_bus_token bus_token);
291 : extern bool irq_domain_check_msi_remap(void);
292 : extern void irq_set_default_host(struct irq_domain *host);
293 : extern struct irq_domain *irq_get_default_host(void);
294 : extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs,
295 : irq_hw_number_t hwirq, int node,
296 : const struct irq_affinity_desc *affinity);
297 :
298 : static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
299 : {
300 0 : return node ? &node->fwnode : NULL;
301 : }
302 :
303 : extern const struct fwnode_operations irqchip_fwnode_ops;
304 :
305 : static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode)
306 : {
307 0 : return fwnode && fwnode->ops == &irqchip_fwnode_ops;
308 : }
309 :
310 : extern void irq_domain_update_bus_token(struct irq_domain *domain,
311 : enum irq_domain_bus_token bus_token);
312 :
313 : static inline
314 : struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
315 : enum irq_domain_bus_token bus_token)
316 : {
317 0 : struct irq_fwspec fwspec = {
318 : .fwnode = fwnode,
319 : };
320 :
321 0 : return irq_find_matching_fwspec(&fwspec, bus_token);
322 : }
323 :
324 : static inline struct irq_domain *irq_find_matching_host(struct device_node *node,
325 : enum irq_domain_bus_token bus_token)
326 : {
327 : return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token);
328 : }
329 :
330 : static inline struct irq_domain *irq_find_host(struct device_node *node)
331 : {
332 : struct irq_domain *d;
333 :
334 : d = irq_find_matching_host(node, DOMAIN_BUS_WIRED);
335 : if (!d)
336 : d = irq_find_matching_host(node, DOMAIN_BUS_ANY);
337 :
338 : return d;
339 : }
340 :
341 : static inline struct irq_domain *irq_domain_add_simple(struct device_node *of_node,
342 : unsigned int size,
343 : unsigned int first_irq,
344 : const struct irq_domain_ops *ops,
345 : void *host_data)
346 : {
347 : return irq_domain_create_simple(of_node_to_fwnode(of_node), size, first_irq, ops, host_data);
348 : }
349 :
350 : /**
351 : * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
352 : * @of_node: pointer to interrupt controller's device tree node.
353 : * @size: Number of interrupts in the domain.
354 : * @ops: map/unmap domain callbacks
355 : * @host_data: Controller private data pointer
356 : */
357 : static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
358 : unsigned int size,
359 : const struct irq_domain_ops *ops,
360 : void *host_data)
361 : {
362 0 : return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data);
363 : }
364 :
365 : #ifdef CONFIG_IRQ_DOMAIN_NOMAP
366 : static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
367 : unsigned int max_irq,
368 : const struct irq_domain_ops *ops,
369 : void *host_data)
370 : {
371 : return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data);
372 : }
373 :
374 : extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
375 : #endif
376 :
377 : static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
378 : const struct irq_domain_ops *ops,
379 : void *host_data)
380 : {
381 : return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data);
382 : }
383 :
384 : static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode,
385 : unsigned int size,
386 : const struct irq_domain_ops *ops,
387 : void *host_data)
388 : {
389 0 : return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
390 : }
391 :
392 : static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode,
393 : const struct irq_domain_ops *ops,
394 : void *host_data)
395 : {
396 0 : return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data);
397 : }
398 :
399 : extern void irq_domain_remove(struct irq_domain *host);
400 :
401 : extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
402 : irq_hw_number_t hwirq);
403 : extern void irq_domain_associate_many(struct irq_domain *domain,
404 : unsigned int irq_base,
405 : irq_hw_number_t hwirq_base, int count);
406 :
407 : extern unsigned int irq_create_mapping_affinity(struct irq_domain *host,
408 : irq_hw_number_t hwirq,
409 : const struct irq_affinity_desc *affinity);
410 : extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
411 : extern void irq_dispose_mapping(unsigned int virq);
412 :
413 : static inline unsigned int irq_create_mapping(struct irq_domain *host,
414 : irq_hw_number_t hwirq)
415 : {
416 0 : return irq_create_mapping_affinity(host, hwirq, NULL);
417 : }
418 :
419 : extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain,
420 : irq_hw_number_t hwirq,
421 : unsigned int *irq);
422 :
423 : static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain,
424 : irq_hw_number_t hwirq)
425 : {
426 0 : return __irq_resolve_mapping(domain, hwirq, NULL);
427 : }
428 :
429 : /**
430 : * irq_find_mapping() - Find a linux irq from a hw irq number.
431 : * @domain: domain owning this hardware interrupt
432 : * @hwirq: hardware irq number in that domain space
433 : */
434 : static inline unsigned int irq_find_mapping(struct irq_domain *domain,
435 : irq_hw_number_t hwirq)
436 : {
437 : unsigned int irq;
438 :
439 0 : if (__irq_resolve_mapping(domain, hwirq, &irq))
440 0 : return irq;
441 :
442 : return 0;
443 : }
444 :
445 : static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
446 : irq_hw_number_t hwirq)
447 : {
448 : return irq_find_mapping(domain, hwirq);
449 : }
450 :
451 : extern const struct irq_domain_ops irq_domain_simple_ops;
452 :
453 : /* stock xlate functions */
454 : int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr,
455 : const u32 *intspec, unsigned int intsize,
456 : irq_hw_number_t *out_hwirq, unsigned int *out_type);
457 : int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr,
458 : const u32 *intspec, unsigned int intsize,
459 : irq_hw_number_t *out_hwirq, unsigned int *out_type);
460 : int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
461 : const u32 *intspec, unsigned int intsize,
462 : irq_hw_number_t *out_hwirq, unsigned int *out_type);
463 :
464 : int irq_domain_translate_twocell(struct irq_domain *d,
465 : struct irq_fwspec *fwspec,
466 : unsigned long *out_hwirq,
467 : unsigned int *out_type);
468 :
469 : int irq_domain_translate_onecell(struct irq_domain *d,
470 : struct irq_fwspec *fwspec,
471 : unsigned long *out_hwirq,
472 : unsigned int *out_type);
473 :
474 : /* IPI functions */
475 : int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
476 : int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
477 :
478 : /* V2 interfaces to support hierarchy IRQ domains. */
479 : extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
480 : unsigned int virq);
481 : extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
482 : irq_hw_number_t hwirq,
483 : const struct irq_chip *chip,
484 : void *chip_data, irq_flow_handler_t handler,
485 : void *handler_data, const char *handler_name);
486 : extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
487 : #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
488 : extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
489 : unsigned int flags, unsigned int size,
490 : struct fwnode_handle *fwnode,
491 : const struct irq_domain_ops *ops, void *host_data);
492 :
493 : static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
494 : unsigned int flags,
495 : unsigned int size,
496 : struct device_node *node,
497 : const struct irq_domain_ops *ops,
498 : void *host_data)
499 : {
500 : return irq_domain_create_hierarchy(parent, flags, size,
501 : of_node_to_fwnode(node),
502 : ops, host_data);
503 : }
504 :
505 : extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
506 : unsigned int nr_irqs, int node, void *arg,
507 : bool realloc,
508 : const struct irq_affinity_desc *affinity);
509 : extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
510 : extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early);
511 : extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
512 :
513 : static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
514 : unsigned int nr_irqs, int node, void *arg)
515 : {
516 0 : return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false,
517 : NULL);
518 : }
519 :
520 : extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
521 : unsigned int irq_base,
522 : unsigned int nr_irqs, void *arg);
523 : extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
524 : unsigned int virq,
525 : irq_hw_number_t hwirq,
526 : const struct irq_chip *chip,
527 : void *chip_data);
528 : extern void irq_domain_free_irqs_common(struct irq_domain *domain,
529 : unsigned int virq,
530 : unsigned int nr_irqs);
531 : extern void irq_domain_free_irqs_top(struct irq_domain *domain,
532 : unsigned int virq, unsigned int nr_irqs);
533 :
534 : extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg);
535 : extern int irq_domain_pop_irq(struct irq_domain *domain, int virq);
536 :
537 : extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
538 : unsigned int irq_base,
539 : unsigned int nr_irqs, void *arg);
540 :
541 : extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
542 : unsigned int irq_base,
543 : unsigned int nr_irqs);
544 :
545 : extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain,
546 : unsigned int virq);
547 :
548 : static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
549 : {
550 0 : return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
551 : }
552 :
553 : static inline bool irq_domain_is_ipi(struct irq_domain *domain)
554 : {
555 : return domain->flags &
556 : (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE);
557 : }
558 :
559 : static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
560 : {
561 : return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU;
562 : }
563 :
564 : static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
565 : {
566 : return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE;
567 : }
568 :
569 : static inline bool irq_domain_is_msi(struct irq_domain *domain)
570 : {
571 0 : return domain->flags & IRQ_DOMAIN_FLAG_MSI;
572 : }
573 :
574 : static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
575 : {
576 0 : return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP;
577 : }
578 :
579 : extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain);
580 :
581 : #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
582 : static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
583 : unsigned int nr_irqs, int node, void *arg)
584 : {
585 : return -1;
586 : }
587 :
588 : static inline void irq_domain_free_irqs(unsigned int virq,
589 : unsigned int nr_irqs) { }
590 :
591 : static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
592 : {
593 : return false;
594 : }
595 :
596 : static inline bool irq_domain_is_ipi(struct irq_domain *domain)
597 : {
598 : return false;
599 : }
600 :
601 : static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
602 : {
603 : return false;
604 : }
605 :
606 : static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
607 : {
608 : return false;
609 : }
610 :
611 : static inline bool irq_domain_is_msi(struct irq_domain *domain)
612 : {
613 : return false;
614 : }
615 :
616 : static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
617 : {
618 : return false;
619 : }
620 :
621 : static inline bool
622 : irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain)
623 : {
624 : return false;
625 : }
626 : #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
627 :
628 : #else /* CONFIG_IRQ_DOMAIN */
629 : static inline void irq_dispose_mapping(unsigned int virq) { }
630 : static inline struct irq_domain *irq_find_matching_fwnode(
631 : struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token)
632 : {
633 : return NULL;
634 : }
635 : static inline bool irq_domain_check_msi_remap(void)
636 : {
637 : return false;
638 : }
639 : #endif /* !CONFIG_IRQ_DOMAIN */
640 :
641 : #endif /* _LINUX_IRQDOMAIN_H */
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