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