1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * irq_domain - IRQ translation domains |
4 | * |
5 | * Translation infrastructure between hw and linux irq numbers. This is |
6 | * helpful for interrupt controllers to implement mapping between hardware |
7 | * irq numbers and the Linux irq number space. |
8 | * |
9 | * irq_domains also have hooks for translating device tree or other |
10 | * firmware interrupt representations into a hardware irq number that |
11 | * can be mapped back to a Linux irq number without any extra platform |
12 | * support code. |
13 | * |
14 | * Interrupt controller "domain" data structure. This could be defined as a |
15 | * irq domain controller. That is, it handles the mapping between hardware |
16 | * and virtual interrupt numbers for a given interrupt domain. The domain |
17 | * structure is generally created by the PIC code for a given PIC instance |
18 | * (though a domain can cover more than one PIC if they have a flat number |
19 | * model). It's the domain callbacks that are responsible for setting the |
20 | * irq_chip on a given irq_desc after it's been mapped. |
21 | * |
22 | * The host code and data structures use a fwnode_handle pointer to |
23 | * identify the domain. In some cases, and in order to preserve source |
24 | * code compatibility, this fwnode pointer is "upgraded" to a DT |
25 | * device_node. For those firmware infrastructures that do not provide |
26 | * a unique identifier for an interrupt controller, the irq_domain |
27 | * code offers a fwnode allocator. |
28 | */ |
29 | |
30 | #ifndef _LINUX_IRQDOMAIN_H |
31 | #define _LINUX_IRQDOMAIN_H |
32 | |
33 | #include <linux/types.h> |
34 | #include <linux/irqhandler.h> |
35 | #include <linux/of.h> |
36 | #include <linux/mutex.h> |
37 | #include <linux/radix-tree.h> |
38 | |
39 | struct device_node; |
40 | struct irq_domain; |
41 | struct of_device_id; |
42 | struct irq_chip; |
43 | struct irq_data; |
44 | struct cpumask; |
45 | struct seq_file; |
46 | struct irq_affinity_desc; |
47 | |
48 | /* Number of irqs reserved for a legacy isa controller */ |
49 | #define NUM_ISA_INTERRUPTS 16 |
50 | |
51 | #define IRQ_DOMAIN_IRQ_SPEC_PARAMS 16 |
52 | |
53 | /** |
54 | * struct irq_fwspec - generic IRQ specifier structure |
55 | * |
56 | * @fwnode: Pointer to a firmware-specific descriptor |
57 | * @param_count: Number of device-specific parameters |
58 | * @param: Device-specific parameters |
59 | * |
60 | * This structure, directly modeled after of_phandle_args, is used to |
61 | * pass a device-specific description of an interrupt. |
62 | */ |
63 | struct irq_fwspec { |
64 | struct fwnode_handle *fwnode; |
65 | int param_count; |
66 | u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS]; |
67 | }; |
68 | |
69 | /* |
70 | * Should several domains have the same device node, but serve |
71 | * different purposes (for example one domain is for PCI/MSI, and the |
72 | * other for wired IRQs), they can be distinguished using a |
73 | * bus-specific token. Most domains are expected to only carry |
74 | * DOMAIN_BUS_ANY. |
75 | */ |
76 | enum irq_domain_bus_token { |
77 | DOMAIN_BUS_ANY = 0, |
78 | DOMAIN_BUS_WIRED, |
79 | DOMAIN_BUS_GENERIC_MSI, |
80 | DOMAIN_BUS_PCI_MSI, |
81 | DOMAIN_BUS_PLATFORM_MSI, |
82 | DOMAIN_BUS_NEXUS, |
83 | DOMAIN_BUS_IPI, |
84 | DOMAIN_BUS_FSL_MC_MSI, |
85 | }; |
86 | |
87 | /** |
88 | * struct irq_domain_ops - Methods for irq_domain objects |
89 | * @match: Match an interrupt controller device node to a host, returns |
90 | * 1 on a match |
91 | * @map: Create or update a mapping between a virtual irq number and a hw |
92 | * irq number. This is called only once for a given mapping. |
93 | * @unmap: Dispose of such a mapping |
94 | * @xlate: Given a device tree node and interrupt specifier, decode |
95 | * the hardware irq number and linux irq type value. |
96 | * |
97 | * Functions below are provided by the driver and called whenever a new mapping |
98 | * is created or an old mapping is disposed. The driver can then proceed to |
99 | * whatever internal data structures management is required. It also needs |
100 | * to setup the irq_desc when returning from map(). |
101 | */ |
102 | struct irq_domain_ops { |
103 | int (*match)(struct irq_domain *d, struct device_node *node, |
104 | enum irq_domain_bus_token bus_token); |
105 | int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec, |
106 | enum irq_domain_bus_token bus_token); |
107 | int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw); |
108 | void (*unmap)(struct irq_domain *d, unsigned int virq); |
109 | int (*xlate)(struct irq_domain *d, struct device_node *node, |
110 | const u32 *intspec, unsigned int intsize, |
111 | unsigned long *out_hwirq, unsigned int *out_type); |
112 | #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY |
113 | /* extended V2 interfaces to support hierarchy irq_domains */ |
114 | int (*alloc)(struct irq_domain *d, unsigned int virq, |
115 | unsigned int nr_irqs, void *arg); |
116 | void (*free)(struct irq_domain *d, unsigned int virq, |
117 | unsigned int nr_irqs); |
118 | int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve); |
119 | void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data); |
120 | int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec, |
121 | unsigned long *out_hwirq, unsigned int *out_type); |
122 | #endif |
123 | #ifdef CONFIG_GENERIC_IRQ_DEBUGFS |
124 | void (*debug_show)(struct seq_file *m, struct irq_domain *d, |
125 | struct irq_data *irqd, int ind); |
126 | #endif |
127 | }; |
128 | |
129 | extern struct irq_domain_ops irq_generic_chip_ops; |
130 | |
131 | struct irq_domain_chip_generic; |
132 | |
133 | /** |
134 | * struct irq_domain - Hardware interrupt number translation object |
135 | * @link: Element in global irq_domain list. |
136 | * @name: Name of interrupt domain |
137 | * @ops: pointer to irq_domain methods |
138 | * @host_data: private data pointer for use by owner. Not touched by irq_domain |
139 | * core code. |
140 | * @flags: host per irq_domain flags |
141 | * @mapcount: The number of mapped interrupts |
142 | * |
143 | * Optional elements |
144 | * @fwnode: Pointer to firmware node associated with the irq_domain. Pretty easy |
145 | * to swap it for the of_node via the irq_domain_get_of_node accessor |
146 | * @gc: Pointer to a list of generic chips. There is a helper function for |
147 | * setting up one or more generic chips for interrupt controllers |
148 | * drivers using the generic chip library which uses this pointer. |
149 | * @parent: Pointer to parent irq_domain to support hierarchy irq_domains |
150 | * @debugfs_file: dentry for the domain debugfs file |
151 | * |
152 | * Revmap data, used internally by irq_domain |
153 | * @revmap_direct_max_irq: The largest hwirq that can be set for controllers that |
154 | * support direct mapping |
155 | * @revmap_size: Size of the linear map table @linear_revmap[] |
156 | * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map |
157 | * @linear_revmap: Linear table of hwirq->virq reverse mappings |
158 | */ |
159 | struct irq_domain { |
160 | struct list_head link; |
161 | const char *name; |
162 | const struct irq_domain_ops *ops; |
163 | void *host_data; |
164 | unsigned int flags; |
165 | unsigned int mapcount; |
166 | |
167 | /* Optional data */ |
168 | struct fwnode_handle *fwnode; |
169 | enum irq_domain_bus_token bus_token; |
170 | struct irq_domain_chip_generic *gc; |
171 | #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY |
172 | struct irq_domain *parent; |
173 | #endif |
174 | #ifdef CONFIG_GENERIC_IRQ_DEBUGFS |
175 | struct dentry *debugfs_file; |
176 | #endif |
177 | |
178 | /* reverse map data. The linear map gets appended to the irq_domain */ |
179 | irq_hw_number_t hwirq_max; |
180 | unsigned int revmap_direct_max_irq; |
181 | unsigned int revmap_size; |
182 | struct radix_tree_root revmap_tree; |
183 | struct mutex revmap_tree_mutex; |
184 | unsigned int linear_revmap[]; |
185 | }; |
186 | |
187 | /* Irq domain flags */ |
188 | enum { |
189 | /* Irq domain is hierarchical */ |
190 | IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0), |
191 | |
192 | /* Irq domain name was allocated in __irq_domain_add() */ |
193 | IRQ_DOMAIN_NAME_ALLOCATED = (1 << 6), |
194 | |
195 | /* Irq domain is an IPI domain with virq per cpu */ |
196 | IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2), |
197 | |
198 | /* Irq domain is an IPI domain with single virq */ |
199 | IRQ_DOMAIN_FLAG_IPI_SINGLE = (1 << 3), |
200 | |
201 | /* Irq domain implements MSIs */ |
202 | IRQ_DOMAIN_FLAG_MSI = (1 << 4), |
203 | |
204 | /* Irq domain implements MSI remapping */ |
205 | IRQ_DOMAIN_FLAG_MSI_REMAP = (1 << 5), |
206 | |
207 | /* |
208 | * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved |
209 | * for implementation specific purposes and ignored by the |
210 | * core code. |
211 | */ |
212 | IRQ_DOMAIN_FLAG_NONCORE = (1 << 16), |
213 | }; |
214 | |
215 | static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d) |
216 | { |
217 | return to_of_node(d->fwnode); |
218 | } |
219 | |
220 | #ifdef CONFIG_IRQ_DOMAIN |
221 | struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id, |
222 | const char *name, void *data); |
223 | |
224 | enum { |
225 | IRQCHIP_FWNODE_REAL, |
226 | IRQCHIP_FWNODE_NAMED, |
227 | IRQCHIP_FWNODE_NAMED_ID, |
228 | }; |
229 | |
230 | static inline |
231 | struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name) |
232 | { |
233 | return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL); |
234 | } |
235 | |
236 | static inline |
237 | struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id) |
238 | { |
239 | return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name, |
240 | NULL); |
241 | } |
242 | |
243 | static inline struct fwnode_handle *irq_domain_alloc_fwnode(void *data) |
244 | { |
245 | return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, data); |
246 | } |
247 | |
248 | void irq_domain_free_fwnode(struct fwnode_handle *fwnode); |
249 | struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, |
250 | irq_hw_number_t hwirq_max, int direct_max, |
251 | const struct irq_domain_ops *ops, |
252 | void *host_data); |
253 | struct irq_domain *irq_domain_add_simple(struct device_node *of_node, |
254 | unsigned int size, |
255 | unsigned int first_irq, |
256 | const struct irq_domain_ops *ops, |
257 | void *host_data); |
258 | struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, |
259 | unsigned int size, |
260 | unsigned int first_irq, |
261 | irq_hw_number_t first_hwirq, |
262 | const struct irq_domain_ops *ops, |
263 | void *host_data); |
264 | extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec, |
265 | enum irq_domain_bus_token bus_token); |
266 | extern bool irq_domain_check_msi_remap(void); |
267 | extern void irq_set_default_host(struct irq_domain *host); |
268 | extern struct irq_domain *irq_get_default_host(void); |
269 | extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs, |
270 | irq_hw_number_t hwirq, int node, |
271 | const struct irq_affinity_desc *affinity); |
272 | |
273 | static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node) |
274 | { |
275 | return node ? &node->fwnode : NULL; |
276 | } |
277 | |
278 | extern const struct fwnode_operations irqchip_fwnode_ops; |
279 | |
280 | static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode) |
281 | { |
282 | return fwnode && fwnode->ops == &irqchip_fwnode_ops; |
283 | } |
284 | |
285 | extern void irq_domain_update_bus_token(struct irq_domain *domain, |
286 | enum irq_domain_bus_token bus_token); |
287 | |
288 | static inline |
289 | struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, |
290 | enum irq_domain_bus_token bus_token) |
291 | { |
292 | struct irq_fwspec fwspec = { |
293 | .fwnode = fwnode, |
294 | }; |
295 | |
296 | return irq_find_matching_fwspec(&fwspec, bus_token); |
297 | } |
298 | |
299 | static inline struct irq_domain *irq_find_matching_host(struct device_node *node, |
300 | enum irq_domain_bus_token bus_token) |
301 | { |
302 | return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token); |
303 | } |
304 | |
305 | static inline struct irq_domain *irq_find_host(struct device_node *node) |
306 | { |
307 | struct irq_domain *d; |
308 | |
309 | d = irq_find_matching_host(node, DOMAIN_BUS_WIRED); |
310 | if (!d) |
311 | d = irq_find_matching_host(node, DOMAIN_BUS_ANY); |
312 | |
313 | return d; |
314 | } |
315 | |
316 | /** |
317 | * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain. |
318 | * @of_node: pointer to interrupt controller's device tree node. |
319 | * @size: Number of interrupts in the domain. |
320 | * @ops: map/unmap domain callbacks |
321 | * @host_data: Controller private data pointer |
322 | */ |
323 | static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node, |
324 | unsigned int size, |
325 | const struct irq_domain_ops *ops, |
326 | void *host_data) |
327 | { |
328 | return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data); |
329 | } |
330 | static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node, |
331 | unsigned int max_irq, |
332 | const struct irq_domain_ops *ops, |
333 | void *host_data) |
334 | { |
335 | return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data); |
336 | } |
337 | static inline struct irq_domain *irq_domain_add_legacy_isa( |
338 | struct device_node *of_node, |
339 | const struct irq_domain_ops *ops, |
340 | void *host_data) |
341 | { |
342 | return irq_domain_add_legacy(of_node, NUM_ISA_INTERRUPTS, 0, 0, ops, |
343 | host_data); |
344 | } |
345 | static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node, |
346 | const struct irq_domain_ops *ops, |
347 | void *host_data) |
348 | { |
349 | return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data); |
350 | } |
351 | |
352 | static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode, |
353 | unsigned int size, |
354 | const struct irq_domain_ops *ops, |
355 | void *host_data) |
356 | { |
357 | return __irq_domain_add(fwnode, size, size, 0, ops, host_data); |
358 | } |
359 | |
360 | static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode, |
361 | const struct irq_domain_ops *ops, |
362 | void *host_data) |
363 | { |
364 | return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data); |
365 | } |
366 | |
367 | extern void irq_domain_remove(struct irq_domain *host); |
368 | |
369 | extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq, |
370 | irq_hw_number_t hwirq); |
371 | extern void irq_domain_associate_many(struct irq_domain *domain, |
372 | unsigned int irq_base, |
373 | irq_hw_number_t hwirq_base, int count); |
374 | extern void irq_domain_disassociate(struct irq_domain *domain, |
375 | unsigned int irq); |
376 | |
377 | extern unsigned int irq_create_mapping(struct irq_domain *host, |
378 | irq_hw_number_t hwirq); |
379 | extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec); |
380 | extern void irq_dispose_mapping(unsigned int virq); |
381 | |
382 | /** |
383 | * irq_linear_revmap() - Find a linux irq from a hw irq number. |
384 | * @domain: domain owning this hardware interrupt |
385 | * @hwirq: hardware irq number in that domain space |
386 | * |
387 | * This is a fast path alternative to irq_find_mapping() that can be |
388 | * called directly by irq controller code to save a handful of |
389 | * instructions. It is always safe to call, but won't find irqs mapped |
390 | * using the radix tree. |
391 | */ |
392 | static inline unsigned int irq_linear_revmap(struct irq_domain *domain, |
393 | irq_hw_number_t hwirq) |
394 | { |
395 | return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0; |
396 | } |
397 | extern unsigned int irq_find_mapping(struct irq_domain *host, |
398 | irq_hw_number_t hwirq); |
399 | extern unsigned int irq_create_direct_mapping(struct irq_domain *host); |
400 | extern int irq_create_strict_mappings(struct irq_domain *domain, |
401 | unsigned int irq_base, |
402 | irq_hw_number_t hwirq_base, int count); |
403 | |
404 | static inline int irq_create_identity_mapping(struct irq_domain *host, |
405 | irq_hw_number_t hwirq) |
406 | { |
407 | return irq_create_strict_mappings(host, hwirq, hwirq, 1); |
408 | } |
409 | |
410 | extern const struct irq_domain_ops irq_domain_simple_ops; |
411 | |
412 | /* stock xlate functions */ |
413 | int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr, |
414 | const u32 *intspec, unsigned int intsize, |
415 | irq_hw_number_t *out_hwirq, unsigned int *out_type); |
416 | int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr, |
417 | const u32 *intspec, unsigned int intsize, |
418 | irq_hw_number_t *out_hwirq, unsigned int *out_type); |
419 | int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr, |
420 | const u32 *intspec, unsigned int intsize, |
421 | irq_hw_number_t *out_hwirq, unsigned int *out_type); |
422 | |
423 | int irq_domain_translate_twocell(struct irq_domain *d, |
424 | struct irq_fwspec *fwspec, |
425 | unsigned long *out_hwirq, |
426 | unsigned int *out_type); |
427 | |
428 | /* IPI functions */ |
429 | int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest); |
430 | int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest); |
431 | |
432 | /* V2 interfaces to support hierarchy IRQ domains. */ |
433 | extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain, |
434 | unsigned int virq); |
435 | extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq, |
436 | irq_hw_number_t hwirq, struct irq_chip *chip, |
437 | void *chip_data, irq_flow_handler_t handler, |
438 | void *handler_data, const char *handler_name); |
439 | #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY |
440 | extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent, |
441 | unsigned int flags, unsigned int size, |
442 | struct fwnode_handle *fwnode, |
443 | const struct irq_domain_ops *ops, void *host_data); |
444 | |
445 | static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent, |
446 | unsigned int flags, |
447 | unsigned int size, |
448 | struct device_node *node, |
449 | const struct irq_domain_ops *ops, |
450 | void *host_data) |
451 | { |
452 | return irq_domain_create_hierarchy(parent, flags, size, |
453 | of_node_to_fwnode(node), |
454 | ops, host_data); |
455 | } |
456 | |
457 | extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base, |
458 | unsigned int nr_irqs, int node, void *arg, |
459 | bool realloc, |
460 | const struct irq_affinity_desc *affinity); |
461 | extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs); |
462 | extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early); |
463 | extern void irq_domain_deactivate_irq(struct irq_data *irq_data); |
464 | |
465 | static inline int irq_domain_alloc_irqs(struct irq_domain *domain, |
466 | unsigned int nr_irqs, int node, void *arg) |
467 | { |
468 | return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false, |
469 | NULL); |
470 | } |
471 | |
472 | extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain, |
473 | unsigned int irq_base, |
474 | unsigned int nr_irqs, void *arg); |
475 | extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, |
476 | unsigned int virq, |
477 | irq_hw_number_t hwirq, |
478 | struct irq_chip *chip, |
479 | void *chip_data); |
480 | extern void irq_domain_reset_irq_data(struct irq_data *irq_data); |
481 | extern void irq_domain_free_irqs_common(struct irq_domain *domain, |
482 | unsigned int virq, |
483 | unsigned int nr_irqs); |
484 | extern void irq_domain_free_irqs_top(struct irq_domain *domain, |
485 | unsigned int virq, unsigned int nr_irqs); |
486 | |
487 | extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg); |
488 | extern int irq_domain_pop_irq(struct irq_domain *domain, int virq); |
489 | |
490 | extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain, |
491 | unsigned int irq_base, |
492 | unsigned int nr_irqs, void *arg); |
493 | |
494 | extern void irq_domain_free_irqs_parent(struct irq_domain *domain, |
495 | unsigned int irq_base, |
496 | unsigned int nr_irqs); |
497 | |
498 | static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) |
499 | { |
500 | return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY; |
501 | } |
502 | |
503 | static inline bool irq_domain_is_ipi(struct irq_domain *domain) |
504 | { |
505 | return domain->flags & |
506 | (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE); |
507 | } |
508 | |
509 | static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) |
510 | { |
511 | return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU; |
512 | } |
513 | |
514 | static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) |
515 | { |
516 | return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE; |
517 | } |
518 | |
519 | static inline bool irq_domain_is_msi(struct irq_domain *domain) |
520 | { |
521 | return domain->flags & IRQ_DOMAIN_FLAG_MSI; |
522 | } |
523 | |
524 | static inline bool irq_domain_is_msi_remap(struct irq_domain *domain) |
525 | { |
526 | return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP; |
527 | } |
528 | |
529 | extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain); |
530 | |
531 | #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ |
532 | static inline int irq_domain_alloc_irqs(struct irq_domain *domain, |
533 | unsigned int nr_irqs, int node, void *arg) |
534 | { |
535 | return -1; |
536 | } |
537 | |
538 | static inline void irq_domain_free_irqs(unsigned int virq, |
539 | unsigned int nr_irqs) { } |
540 | |
541 | static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) |
542 | { |
543 | return false; |
544 | } |
545 | |
546 | static inline bool irq_domain_is_ipi(struct irq_domain *domain) |
547 | { |
548 | return false; |
549 | } |
550 | |
551 | static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) |
552 | { |
553 | return false; |
554 | } |
555 | |
556 | static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) |
557 | { |
558 | return false; |
559 | } |
560 | |
561 | static inline bool irq_domain_is_msi(struct irq_domain *domain) |
562 | { |
563 | return false; |
564 | } |
565 | |
566 | static inline bool irq_domain_is_msi_remap(struct irq_domain *domain) |
567 | { |
568 | return false; |
569 | } |
570 | |
571 | static inline bool |
572 | irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain) |
573 | { |
574 | return false; |
575 | } |
576 | #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ |
577 | |
578 | #else /* CONFIG_IRQ_DOMAIN */ |
579 | static inline void irq_dispose_mapping(unsigned int virq) { } |
580 | static inline struct irq_domain *irq_find_matching_fwnode( |
581 | struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) |
582 | { |
583 | return NULL; |
584 | } |
585 | static inline bool irq_domain_check_msi_remap(void) |
586 | { |
587 | return false; |
588 | } |
589 | #endif /* !CONFIG_IRQ_DOMAIN */ |
590 | |
591 | #endif /* _LINUX_IRQDOMAIN_H */ |
592 | |