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[] __counted_by(revmap_size); |
178 | }; |
179 | |
180 | /* Irq domain flags */ |
181 | enum { |
182 | /* Irq domain is hierarchical */ |
183 | IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0), |
184 | |
185 | /* Irq domain name was allocated in __irq_domain_add() */ |
186 | IRQ_DOMAIN_NAME_ALLOCATED = (1 << 1), |
187 | |
188 | /* Irq domain is an IPI domain with virq per cpu */ |
189 | IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2), |
190 | |
191 | /* Irq domain is an IPI domain with single virq */ |
192 | IRQ_DOMAIN_FLAG_IPI_SINGLE = (1 << 3), |
193 | |
194 | /* Irq domain implements MSIs */ |
195 | IRQ_DOMAIN_FLAG_MSI = (1 << 4), |
196 | |
197 | /* |
198 | * Irq domain implements isolated MSI, see msi_device_has_isolated_msi() |
199 | */ |
200 | IRQ_DOMAIN_FLAG_ISOLATED_MSI = (1 << 5), |
201 | |
202 | /* Irq domain doesn't translate anything */ |
203 | IRQ_DOMAIN_FLAG_NO_MAP = (1 << 6), |
204 | |
205 | /* Irq domain is a MSI parent domain */ |
206 | IRQ_DOMAIN_FLAG_MSI_PARENT = (1 << 8), |
207 | |
208 | /* Irq domain is a MSI device domain */ |
209 | IRQ_DOMAIN_FLAG_MSI_DEVICE = (1 << 9), |
210 | |
211 | /* |
212 | * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved |
213 | * for implementation specific purposes and ignored by the |
214 | * core code. |
215 | */ |
216 | IRQ_DOMAIN_FLAG_NONCORE = (1 << 16), |
217 | }; |
218 | |
219 | static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d) |
220 | { |
221 | return to_of_node(d->fwnode); |
222 | } |
223 | |
224 | static inline void irq_domain_set_pm_device(struct irq_domain *d, |
225 | struct device *dev) |
226 | { |
227 | if (d) |
228 | d->pm_dev = dev; |
229 | } |
230 | |
231 | #ifdef CONFIG_IRQ_DOMAIN |
232 | struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id, |
233 | const char *name, phys_addr_t *pa); |
234 | |
235 | enum { |
236 | IRQCHIP_FWNODE_REAL, |
237 | IRQCHIP_FWNODE_NAMED, |
238 | IRQCHIP_FWNODE_NAMED_ID, |
239 | }; |
240 | |
241 | static inline |
242 | struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name) |
243 | { |
244 | return __irq_domain_alloc_fwnode(type: IRQCHIP_FWNODE_NAMED, id: 0, name, NULL); |
245 | } |
246 | |
247 | static inline |
248 | struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id) |
249 | { |
250 | return __irq_domain_alloc_fwnode(type: IRQCHIP_FWNODE_NAMED_ID, id, name, |
251 | NULL); |
252 | } |
253 | |
254 | static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa) |
255 | { |
256 | return __irq_domain_alloc_fwnode(type: IRQCHIP_FWNODE_REAL, id: 0, NULL, pa); |
257 | } |
258 | |
259 | void irq_domain_free_fwnode(struct fwnode_handle *fwnode); |
260 | struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, unsigned int size, |
261 | irq_hw_number_t hwirq_max, int direct_max, |
262 | const struct irq_domain_ops *ops, |
263 | void *host_data); |
264 | struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode, |
265 | unsigned int size, |
266 | unsigned int first_irq, |
267 | const struct irq_domain_ops *ops, |
268 | void *host_data); |
269 | struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, |
270 | unsigned int size, |
271 | unsigned int first_irq, |
272 | irq_hw_number_t first_hwirq, |
273 | const struct irq_domain_ops *ops, |
274 | void *host_data); |
275 | struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode, |
276 | unsigned int size, |
277 | unsigned int first_irq, |
278 | irq_hw_number_t first_hwirq, |
279 | const struct irq_domain_ops *ops, |
280 | void *host_data); |
281 | extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec, |
282 | enum irq_domain_bus_token bus_token); |
283 | extern void irq_set_default_host(struct irq_domain *host); |
284 | extern struct irq_domain *irq_get_default_host(void); |
285 | extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs, |
286 | irq_hw_number_t hwirq, int node, |
287 | const struct irq_affinity_desc *affinity); |
288 | |
289 | static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node) |
290 | { |
291 | return node ? &node->fwnode : NULL; |
292 | } |
293 | |
294 | extern const struct fwnode_operations irqchip_fwnode_ops; |
295 | |
296 | static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode) |
297 | { |
298 | return fwnode && fwnode->ops == &irqchip_fwnode_ops; |
299 | } |
300 | |
301 | extern void irq_domain_update_bus_token(struct irq_domain *domain, |
302 | enum irq_domain_bus_token bus_token); |
303 | |
304 | static inline |
305 | struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, |
306 | enum irq_domain_bus_token bus_token) |
307 | { |
308 | struct irq_fwspec fwspec = { |
309 | .fwnode = fwnode, |
310 | }; |
311 | |
312 | return irq_find_matching_fwspec(fwspec: &fwspec, bus_token); |
313 | } |
314 | |
315 | static inline struct irq_domain *irq_find_matching_host(struct device_node *node, |
316 | enum irq_domain_bus_token bus_token) |
317 | { |
318 | return irq_find_matching_fwnode(fwnode: of_node_to_fwnode(node), bus_token); |
319 | } |
320 | |
321 | static inline struct irq_domain *irq_find_host(struct device_node *node) |
322 | { |
323 | struct irq_domain *d; |
324 | |
325 | d = irq_find_matching_host(node, bus_token: DOMAIN_BUS_WIRED); |
326 | if (!d) |
327 | d = irq_find_matching_host(node, bus_token: DOMAIN_BUS_ANY); |
328 | |
329 | return d; |
330 | } |
331 | |
332 | static inline struct irq_domain *irq_domain_add_simple(struct device_node *of_node, |
333 | unsigned int size, |
334 | unsigned int first_irq, |
335 | const struct irq_domain_ops *ops, |
336 | void *host_data) |
337 | { |
338 | return irq_domain_create_simple(fwnode: of_node_to_fwnode(node: of_node), size, first_irq, ops, host_data); |
339 | } |
340 | |
341 | /** |
342 | * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain. |
343 | * @of_node: pointer to interrupt controller's device tree node. |
344 | * @size: Number of interrupts in the domain. |
345 | * @ops: map/unmap domain callbacks |
346 | * @host_data: Controller private data pointer |
347 | */ |
348 | static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node, |
349 | unsigned int size, |
350 | const struct irq_domain_ops *ops, |
351 | void *host_data) |
352 | { |
353 | return __irq_domain_add(fwnode: of_node_to_fwnode(node: of_node), size, hwirq_max: size, direct_max: 0, ops, host_data); |
354 | } |
355 | |
356 | #ifdef CONFIG_IRQ_DOMAIN_NOMAP |
357 | static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node, |
358 | unsigned int max_irq, |
359 | const struct irq_domain_ops *ops, |
360 | void *host_data) |
361 | { |
362 | return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data); |
363 | } |
364 | |
365 | extern unsigned int irq_create_direct_mapping(struct irq_domain *host); |
366 | #endif |
367 | |
368 | static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node, |
369 | const struct irq_domain_ops *ops, |
370 | void *host_data) |
371 | { |
372 | return __irq_domain_add(fwnode: of_node_to_fwnode(node: of_node), size: 0, hwirq_max: ~0, direct_max: 0, ops, host_data); |
373 | } |
374 | |
375 | static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode, |
376 | unsigned int size, |
377 | const struct irq_domain_ops *ops, |
378 | void *host_data) |
379 | { |
380 | return __irq_domain_add(fwnode, size, hwirq_max: size, direct_max: 0, ops, host_data); |
381 | } |
382 | |
383 | static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode, |
384 | const struct irq_domain_ops *ops, |
385 | void *host_data) |
386 | { |
387 | return __irq_domain_add(fwnode, size: 0, hwirq_max: ~0, direct_max: 0, ops, host_data); |
388 | } |
389 | |
390 | extern void irq_domain_remove(struct irq_domain *host); |
391 | |
392 | extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq, |
393 | irq_hw_number_t hwirq); |
394 | extern void irq_domain_associate_many(struct irq_domain *domain, |
395 | unsigned int irq_base, |
396 | irq_hw_number_t hwirq_base, int count); |
397 | |
398 | extern unsigned int irq_create_mapping_affinity(struct irq_domain *host, |
399 | irq_hw_number_t hwirq, |
400 | const struct irq_affinity_desc *affinity); |
401 | extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec); |
402 | extern void irq_dispose_mapping(unsigned int virq); |
403 | |
404 | static inline unsigned int irq_create_mapping(struct irq_domain *host, |
405 | irq_hw_number_t hwirq) |
406 | { |
407 | return irq_create_mapping_affinity(host, hwirq, NULL); |
408 | } |
409 | |
410 | extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain, |
411 | irq_hw_number_t hwirq, |
412 | unsigned int *irq); |
413 | |
414 | static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain, |
415 | irq_hw_number_t hwirq) |
416 | { |
417 | return __irq_resolve_mapping(domain, hwirq, NULL); |
418 | } |
419 | |
420 | /** |
421 | * irq_find_mapping() - Find a linux irq from a hw irq number. |
422 | * @domain: domain owning this hardware interrupt |
423 | * @hwirq: hardware irq number in that domain space |
424 | */ |
425 | static inline unsigned int irq_find_mapping(struct irq_domain *domain, |
426 | irq_hw_number_t hwirq) |
427 | { |
428 | unsigned int irq; |
429 | |
430 | if (__irq_resolve_mapping(domain, hwirq, irq: &irq)) |
431 | return irq; |
432 | |
433 | return 0; |
434 | } |
435 | |
436 | static inline unsigned int irq_linear_revmap(struct irq_domain *domain, |
437 | irq_hw_number_t hwirq) |
438 | { |
439 | return irq_find_mapping(domain, hwirq); |
440 | } |
441 | |
442 | extern const struct irq_domain_ops irq_domain_simple_ops; |
443 | |
444 | /* stock xlate functions */ |
445 | int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr, |
446 | const u32 *intspec, unsigned int intsize, |
447 | irq_hw_number_t *out_hwirq, unsigned int *out_type); |
448 | int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr, |
449 | const u32 *intspec, unsigned int intsize, |
450 | irq_hw_number_t *out_hwirq, unsigned int *out_type); |
451 | int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr, |
452 | const u32 *intspec, unsigned int intsize, |
453 | irq_hw_number_t *out_hwirq, unsigned int *out_type); |
454 | |
455 | int irq_domain_translate_twocell(struct irq_domain *d, |
456 | struct irq_fwspec *fwspec, |
457 | unsigned long *out_hwirq, |
458 | unsigned int *out_type); |
459 | |
460 | int irq_domain_translate_onecell(struct irq_domain *d, |
461 | struct irq_fwspec *fwspec, |
462 | unsigned long *out_hwirq, |
463 | unsigned int *out_type); |
464 | |
465 | /* IPI functions */ |
466 | int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest); |
467 | int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest); |
468 | |
469 | /* V2 interfaces to support hierarchy IRQ domains. */ |
470 | extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain, |
471 | unsigned int virq); |
472 | extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq, |
473 | irq_hw_number_t hwirq, |
474 | const struct irq_chip *chip, |
475 | void *chip_data, irq_flow_handler_t handler, |
476 | void *handler_data, const char *handler_name); |
477 | extern void irq_domain_reset_irq_data(struct irq_data *irq_data); |
478 | #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY |
479 | extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent, |
480 | unsigned int flags, unsigned int size, |
481 | struct fwnode_handle *fwnode, |
482 | const struct irq_domain_ops *ops, void *host_data); |
483 | |
484 | static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent, |
485 | unsigned int flags, |
486 | unsigned int size, |
487 | struct device_node *node, |
488 | const struct irq_domain_ops *ops, |
489 | void *host_data) |
490 | { |
491 | return irq_domain_create_hierarchy(parent, flags, size, |
492 | fwnode: of_node_to_fwnode(node), |
493 | ops, host_data); |
494 | } |
495 | |
496 | extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base, |
497 | unsigned int nr_irqs, int node, void *arg, |
498 | bool realloc, |
499 | const struct irq_affinity_desc *affinity); |
500 | extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs); |
501 | extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early); |
502 | extern void irq_domain_deactivate_irq(struct irq_data *irq_data); |
503 | |
504 | static inline int irq_domain_alloc_irqs(struct irq_domain *domain, |
505 | unsigned int nr_irqs, int node, void *arg) |
506 | { |
507 | return __irq_domain_alloc_irqs(domain, irq_base: -1, nr_irqs, node, arg, realloc: false, |
508 | NULL); |
509 | } |
510 | |
511 | extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain, |
512 | unsigned int irq_base, |
513 | unsigned int nr_irqs, void *arg); |
514 | extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, |
515 | unsigned int virq, |
516 | irq_hw_number_t hwirq, |
517 | const struct irq_chip *chip, |
518 | void *chip_data); |
519 | extern void irq_domain_free_irqs_common(struct irq_domain *domain, |
520 | unsigned int virq, |
521 | unsigned int nr_irqs); |
522 | extern void irq_domain_free_irqs_top(struct irq_domain *domain, |
523 | unsigned int virq, unsigned int nr_irqs); |
524 | |
525 | extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg); |
526 | extern int irq_domain_pop_irq(struct irq_domain *domain, int virq); |
527 | |
528 | extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain, |
529 | unsigned int irq_base, |
530 | unsigned int nr_irqs, void *arg); |
531 | |
532 | extern void irq_domain_free_irqs_parent(struct irq_domain *domain, |
533 | unsigned int irq_base, |
534 | unsigned int nr_irqs); |
535 | |
536 | extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain, |
537 | unsigned int virq); |
538 | |
539 | static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) |
540 | { |
541 | return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY; |
542 | } |
543 | |
544 | static inline bool irq_domain_is_ipi(struct irq_domain *domain) |
545 | { |
546 | return domain->flags & |
547 | (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE); |
548 | } |
549 | |
550 | static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) |
551 | { |
552 | return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU; |
553 | } |
554 | |
555 | static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) |
556 | { |
557 | return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE; |
558 | } |
559 | |
560 | static inline bool irq_domain_is_msi(struct irq_domain *domain) |
561 | { |
562 | return domain->flags & IRQ_DOMAIN_FLAG_MSI; |
563 | } |
564 | |
565 | static inline bool irq_domain_is_msi_parent(struct irq_domain *domain) |
566 | { |
567 | return domain->flags & IRQ_DOMAIN_FLAG_MSI_PARENT; |
568 | } |
569 | |
570 | static inline bool irq_domain_is_msi_device(struct irq_domain *domain) |
571 | { |
572 | return domain->flags & IRQ_DOMAIN_FLAG_MSI_DEVICE; |
573 | } |
574 | |
575 | #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ |
576 | static inline int irq_domain_alloc_irqs(struct irq_domain *domain, |
577 | unsigned int nr_irqs, int node, void *arg) |
578 | { |
579 | return -1; |
580 | } |
581 | |
582 | static inline void irq_domain_free_irqs(unsigned int virq, |
583 | unsigned int nr_irqs) { } |
584 | |
585 | static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) |
586 | { |
587 | return false; |
588 | } |
589 | |
590 | static inline bool irq_domain_is_ipi(struct irq_domain *domain) |
591 | { |
592 | return false; |
593 | } |
594 | |
595 | static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) |
596 | { |
597 | return false; |
598 | } |
599 | |
600 | static inline bool irq_domain_is_ipi_single(struct irq_domain *domain) |
601 | { |
602 | return false; |
603 | } |
604 | |
605 | static inline bool irq_domain_is_msi(struct irq_domain *domain) |
606 | { |
607 | return false; |
608 | } |
609 | |
610 | static inline bool irq_domain_is_msi_parent(struct irq_domain *domain) |
611 | { |
612 | return false; |
613 | } |
614 | |
615 | static inline bool irq_domain_is_msi_device(struct irq_domain *domain) |
616 | { |
617 | return false; |
618 | } |
619 | |
620 | #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ |
621 | |
622 | #else /* CONFIG_IRQ_DOMAIN */ |
623 | static inline void irq_dispose_mapping(unsigned int virq) { } |
624 | static inline struct irq_domain *irq_find_matching_fwnode( |
625 | struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) |
626 | { |
627 | return NULL; |
628 | } |
629 | #endif /* !CONFIG_IRQ_DOMAIN */ |
630 | |
631 | #endif /* _LINUX_IRQDOMAIN_H */ |
632 | |