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
irq_domain_get_of_node(struct irq_domain * d)219 static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
220 {
221 return to_of_node(d->fwnode);
222 }
223
irq_domain_set_pm_device(struct irq_domain * d,struct device * dev)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
irq_domain_alloc_named_fwnode(const char * name)242 struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name)
243 {
244 return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL);
245 }
246
247 static inline
irq_domain_alloc_named_id_fwnode(const char * name,int id)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
irq_domain_alloc_fwnode(phys_addr_t * pa)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
of_node_to_fwnode(struct device_node * node)289 static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
290 {
291 return node ? &node->fwnode : NULL;
292 }
293
294 extern const struct fwnode_operations irqchip_fwnode_ops;
295
is_fwnode_irqchip(struct fwnode_handle * fwnode)296 static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode)
297 {
298 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
irq_find_matching_fwnode(struct fwnode_handle * fwnode,enum irq_domain_bus_token bus_token)305 struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
306 enum irq_domain_bus_token bus_token)
307 {
308 struct irq_fwspec fwspec = {
309 .fwnode = fwnode,
310 };
311
312 return irq_find_matching_fwspec(&fwspec, bus_token);
313 }
314
irq_find_matching_host(struct device_node * node,enum irq_domain_bus_token bus_token)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
irq_find_host(struct device_node * node)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
irq_domain_add_simple(struct device_node * of_node,unsigned int size,unsigned int first_irq,const struct irq_domain_ops * ops,void * host_data)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 */
irq_domain_add_linear(struct device_node * of_node,unsigned int size,const struct irq_domain_ops * ops,void * host_data)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
irq_domain_add_nomap(struct device_node * of_node,unsigned int max_irq,const struct irq_domain_ops * ops,void * host_data)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
irq_domain_add_tree(struct device_node * of_node,const struct irq_domain_ops * ops,void * host_data)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
irq_domain_create_linear(struct fwnode_handle * fwnode,unsigned int size,const struct irq_domain_ops * ops,void * host_data)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 return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
381 }
382
irq_domain_create_tree(struct fwnode_handle * fwnode,const struct irq_domain_ops * ops,void * host_data)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
irq_create_mapping(struct irq_domain * host,irq_hw_number_t hwirq)404 static inline unsigned int irq_create_mapping(struct irq_domain *host,
405 irq_hw_number_t hwirq)
406 {
407 return irq_create_mapping_affinity(host, hwirq, NULL);
408 }
409
410 extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain,
411 irq_hw_number_t hwirq,
412 unsigned int *irq);
413
irq_resolve_mapping(struct irq_domain * domain,irq_hw_number_t hwirq)414 static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain,
415 irq_hw_number_t hwirq)
416 {
417 return __irq_resolve_mapping(domain, hwirq, NULL);
418 }
419
420 /**
421 * irq_find_mapping() - Find a linux irq from a hw irq number.
422 * @domain: domain owning this hardware interrupt
423 * @hwirq: hardware irq number in that domain space
424 */
irq_find_mapping(struct irq_domain * domain,irq_hw_number_t hwirq)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 if (__irq_resolve_mapping(domain, hwirq, &irq))
431 return irq;
432
433 return 0;
434 }
435
irq_linear_revmap(struct irq_domain * domain,irq_hw_number_t hwirq)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
irq_domain_add_hierarchy(struct irq_domain * parent,unsigned int flags,unsigned int size,struct device_node * node,const struct irq_domain_ops * ops,void * host_data)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
irq_domain_alloc_irqs(struct irq_domain * domain,unsigned int nr_irqs,int node,void * arg)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
irq_domain_is_hierarchy(struct irq_domain * domain)539 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
540 {
541 return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
542 }
543
irq_domain_is_ipi(struct irq_domain * domain)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
irq_domain_is_ipi_per_cpu(struct irq_domain * domain)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
irq_domain_is_ipi_single(struct irq_domain * domain)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
irq_domain_is_msi(struct irq_domain * domain)560 static inline bool irq_domain_is_msi(struct irq_domain *domain)
561 {
562 return domain->flags & IRQ_DOMAIN_FLAG_MSI;
563 }
564
irq_domain_is_msi_parent(struct irq_domain * domain)565 static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
566 {
567 return domain->flags & IRQ_DOMAIN_FLAG_MSI_PARENT;
568 }
569
irq_domain_is_msi_device(struct irq_domain * domain)570 static inline bool irq_domain_is_msi_device(struct irq_domain *domain)
571 {
572 return domain->flags & IRQ_DOMAIN_FLAG_MSI_DEVICE;
573 }
574
575 #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
irq_domain_alloc_irqs(struct irq_domain * domain,unsigned int nr_irqs,int node,void * arg)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
irq_domain_free_irqs(unsigned int virq,unsigned int nr_irqs)582 static inline void irq_domain_free_irqs(unsigned int virq,
583 unsigned int nr_irqs) { }
584
irq_domain_is_hierarchy(struct irq_domain * domain)585 static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
586 {
587 return false;
588 }
589
irq_domain_is_ipi(struct irq_domain * domain)590 static inline bool irq_domain_is_ipi(struct irq_domain *domain)
591 {
592 return false;
593 }
594
irq_domain_is_ipi_per_cpu(struct irq_domain * domain)595 static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
596 {
597 return false;
598 }
599
irq_domain_is_ipi_single(struct irq_domain * domain)600 static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
601 {
602 return false;
603 }
604
irq_domain_is_msi(struct irq_domain * domain)605 static inline bool irq_domain_is_msi(struct irq_domain *domain)
606 {
607 return false;
608 }
609
irq_domain_is_msi_parent(struct irq_domain * domain)610 static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
611 {
612 return false;
613 }
614
irq_domain_is_msi_device(struct irq_domain * domain)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 */
irq_dispose_mapping(unsigned int virq)623 static inline void irq_dispose_mapping(unsigned int virq) { }
irq_find_matching_fwnode(struct fwnode_handle * fwnode,enum irq_domain_bus_token bus_token)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 */
632