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Grant Likely08a543a2011-07-26 03:19:06 -06001/*
2 * irq_domain - IRQ translation domains
3 *
4 * Translation infrastructure between hw and linux irq numbers. This is
5 * helpful for interrupt controllers to implement mapping between hardware
6 * irq numbers and the Linux irq number space.
7 *
Marc Zyngiere7a46c82015-10-13 12:51:45 +01008 * irq_domains also have hooks for translating device tree or other
9 * firmware interrupt representations into a hardware irq number that
10 * can be mapped back to a Linux irq number without any extra platform
11 * support code.
Grant Likely08a543a2011-07-26 03:19:06 -060012 *
Grant Likely7bb69ba2012-02-14 14:06:48 -070013 * Interrupt controller "domain" data structure. This could be defined as a
14 * irq domain controller. That is, it handles the mapping between hardware
15 * and virtual interrupt numbers for a given interrupt domain. The domain
16 * structure is generally created by the PIC code for a given PIC instance
17 * (though a domain can cover more than one PIC if they have a flat number
18 * model). It's the domain callbacks that are responsible for setting the
19 * irq_chip on a given irq_desc after it's been mapped.
Grant Likelycc79ca62012-02-16 01:37:49 -070020 *
Marc Zyngiere7a46c82015-10-13 12:51:45 +010021 * The host code and data structures use a fwnode_handle pointer to
22 * identify the domain. In some cases, and in order to preserve source
23 * code compatibility, this fwnode pointer is "upgraded" to a DT
24 * device_node. For those firmware infrastructures that do not provide
25 * a unique identifier for an interrupt controller, the irq_domain
26 * code offers a fwnode allocator.
Grant Likely08a543a2011-07-26 03:19:06 -060027 */
Grant Likely7bb69ba2012-02-14 14:06:48 -070028
Grant Likely08a543a2011-07-26 03:19:06 -060029#ifndef _LINUX_IRQDOMAIN_H
30#define _LINUX_IRQDOMAIN_H
31
Grant Likely7bb69ba2012-02-14 14:06:48 -070032#include <linux/types.h>
Jiang Liu1b537702014-11-09 23:10:24 +080033#include <linux/irqhandler.h>
Marc Zyngierf1107112015-10-13 12:51:30 +010034#include <linux/of.h>
Grant Likely7bb69ba2012-02-14 14:06:48 -070035#include <linux/radix-tree.h>
Grant Likely08a543a2011-07-26 03:19:06 -060036
Grant Likely08a543a2011-07-26 03:19:06 -060037struct device_node;
38struct irq_domain;
Grant Likely7bb69ba2012-02-14 14:06:48 -070039struct of_device_id;
Jiang Liuf8264e32014-11-06 22:20:14 +080040struct irq_chip;
41struct irq_data;
Grant Likely7bb69ba2012-02-14 14:06:48 -070042
Grant Likely1bc04f22012-02-14 14:06:55 -070043/* Number of irqs reserved for a legacy isa controller */
44#define NUM_ISA_INTERRUPTS 16
45
Marc Zyngier11e4438e2015-10-13 12:51:32 +010046#define IRQ_DOMAIN_IRQ_SPEC_PARAMS 16
47
48/**
49 * struct irq_fwspec - generic IRQ specifier structure
50 *
51 * @fwnode: Pointer to a firmware-specific descriptor
52 * @param_count: Number of device-specific parameters
53 * @param: Device-specific parameters
54 *
55 * This structure, directly modeled after of_phandle_args, is used to
56 * pass a device-specific description of an interrupt.
57 */
58struct irq_fwspec {
59 struct fwnode_handle *fwnode;
60 int param_count;
61 u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS];
62};
63
Marc Zyngierad3aedf2015-07-28 14:46:08 +010064/*
65 * Should several domains have the same device node, but serve
66 * different purposes (for example one domain is for PCI/MSI, and the
67 * other for wired IRQs), they can be distinguished using a
68 * bus-specific token. Most domains are expected to only carry
69 * DOMAIN_BUS_ANY.
70 */
71enum irq_domain_bus_token {
72 DOMAIN_BUS_ANY = 0,
Marc Zyngier03808392015-07-28 14:46:09 +010073 DOMAIN_BUS_PCI_MSI,
Marc Zyngierc706c232015-07-28 14:46:15 +010074 DOMAIN_BUS_PLATFORM_MSI,
Marc Zyngiera5716072015-07-28 14:46:17 +010075 DOMAIN_BUS_NEXUS,
Marc Zyngierad3aedf2015-07-28 14:46:08 +010076};
77
Grant Likely08a543a2011-07-26 03:19:06 -060078/**
79 * struct irq_domain_ops - Methods for irq_domain objects
Grant Likely7bb69ba2012-02-14 14:06:48 -070080 * @match: Match an interrupt controller device node to a host, returns
81 * 1 on a match
82 * @map: Create or update a mapping between a virtual irq number and a hw
83 * irq number. This is called only once for a given mapping.
84 * @unmap: Dispose of such a mapping
Grant Likely7bb69ba2012-02-14 14:06:48 -070085 * @xlate: Given a device tree node and interrupt specifier, decode
86 * the hardware irq number and linux irq type value.
87 *
88 * Functions below are provided by the driver and called whenever a new mapping
89 * is created or an old mapping is disposed. The driver can then proceed to
90 * whatever internal data structures management is required. It also needs
91 * to setup the irq_desc when returning from map().
Grant Likely08a543a2011-07-26 03:19:06 -060092 */
93struct irq_domain_ops {
Marc Zyngierad3aedf2015-07-28 14:46:08 +010094 int (*match)(struct irq_domain *d, struct device_node *node,
95 enum irq_domain_bus_token bus_token);
Grant Likely7bb69ba2012-02-14 14:06:48 -070096 int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw);
97 void (*unmap)(struct irq_domain *d, unsigned int virq);
Grant Likely7bb69ba2012-02-14 14:06:48 -070098 int (*xlate)(struct irq_domain *d, struct device_node *node,
99 const u32 *intspec, unsigned int intsize,
100 unsigned long *out_hwirq, unsigned int *out_type);
Jiang Liuf8264e32014-11-06 22:20:14 +0800101
102#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
103 /* extended V2 interfaces to support hierarchy irq_domains */
104 int (*alloc)(struct irq_domain *d, unsigned int virq,
105 unsigned int nr_irqs, void *arg);
106 void (*free)(struct irq_domain *d, unsigned int virq,
107 unsigned int nr_irqs);
108 void (*activate)(struct irq_domain *d, struct irq_data *irq_data);
109 void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data);
Marc Zyngier11e4438e2015-10-13 12:51:32 +0100110 int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec,
111 unsigned long *out_hwirq, unsigned int *out_type);
Jiang Liuf8264e32014-11-06 22:20:14 +0800112#endif
Grant Likely08a543a2011-07-26 03:19:06 -0600113};
114
Thomas Gleixner088f40b2013-05-06 14:30:27 +0000115extern struct irq_domain_ops irq_generic_chip_ops;
116
117struct irq_domain_chip_generic;
118
Grant Likely08a543a2011-07-26 03:19:06 -0600119/**
120 * struct irq_domain - Hardware interrupt number translation object
Grant Likely7bb69ba2012-02-14 14:06:48 -0700121 * @link: Element in global irq_domain list.
Grant Likely1aa0dd92013-06-08 12:03:59 +0100122 * @name: Name of interrupt domain
Grant Likely7bb69ba2012-02-14 14:06:48 -0700123 * @ops: pointer to irq_domain methods
124 * @host_data: private data pointer for use by owner. Not touched by irq_domain
125 * core code.
Jiang Liuf8264e32014-11-06 22:20:14 +0800126 * @flags: host per irq_domain flags
Grant Likely1aa0dd92013-06-08 12:03:59 +0100127 *
128 * Optional elements
129 * @of_node: Pointer to device tree nodes associated with the irq_domain. Used
130 * when decoding device tree interrupt specifiers.
131 * @gc: Pointer to a list of generic chips. There is a helper function for
132 * setting up one or more generic chips for interrupt controllers
133 * drivers using the generic chip library which uses this pointer.
Jiang Liuf8264e32014-11-06 22:20:14 +0800134 * @parent: Pointer to parent irq_domain to support hierarchy irq_domains
Grant Likely1aa0dd92013-06-08 12:03:59 +0100135 *
136 * Revmap data, used internally by irq_domain
137 * @revmap_direct_max_irq: The largest hwirq that can be set for controllers that
138 * support direct mapping
139 * @revmap_size: Size of the linear map table @linear_revmap[]
140 * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map
141 * @linear_revmap: Linear table of hwirq->virq reverse mappings
Grant Likely08a543a2011-07-26 03:19:06 -0600142 */
143struct irq_domain {
Grant Likely7bb69ba2012-02-14 14:06:48 -0700144 struct list_head link;
Grant Likely0bb4afb2013-06-06 14:23:30 +0100145 const char *name;
Grant Likelya18dc812012-01-26 12:12:14 -0700146 const struct irq_domain_ops *ops;
Grant Likely7bb69ba2012-02-14 14:06:48 -0700147 void *host_data;
Jiang Liuf8264e32014-11-06 22:20:14 +0800148 unsigned int flags;
Grant Likely7bb69ba2012-02-14 14:06:48 -0700149
Grant Likely1aa0dd92013-06-08 12:03:59 +0100150 /* Optional data */
Marc Zyngierf1107112015-10-13 12:51:30 +0100151 struct fwnode_handle *fwnode;
Marc Zyngierad3aedf2015-07-28 14:46:08 +0100152 enum irq_domain_bus_token bus_token;
Thomas Gleixner088f40b2013-05-06 14:30:27 +0000153 struct irq_domain_chip_generic *gc;
Jiang Liuf8264e32014-11-06 22:20:14 +0800154#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
155 struct irq_domain *parent;
156#endif
Grant Likelycef50752012-07-11 17:24:31 +0100157
Grant Likely1aa0dd92013-06-08 12:03:59 +0100158 /* reverse map data. The linear map gets appended to the irq_domain */
Grant Likelyddaf1442013-06-10 01:06:02 +0100159 irq_hw_number_t hwirq_max;
Grant Likely1aa0dd92013-06-08 12:03:59 +0100160 unsigned int revmap_direct_max_irq;
161 unsigned int revmap_size;
162 struct radix_tree_root revmap_tree;
Grant Likelycef50752012-07-11 17:24:31 +0100163 unsigned int linear_revmap[];
Grant Likely08a543a2011-07-26 03:19:06 -0600164};
165
Jiang Liuf8264e32014-11-06 22:20:14 +0800166/* Irq domain flags */
167enum {
168 /* Irq domain is hierarchical */
169 IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0),
170
Jiang Liu36d72732014-11-15 22:24:01 +0800171 /* Core calls alloc/free recursive through the domain hierarchy. */
172 IRQ_DOMAIN_FLAG_AUTO_RECURSIVE = (1 << 1),
173
Jiang Liuf8264e32014-11-06 22:20:14 +0800174 /*
175 * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
176 * for implementation specific purposes and ignored by the
177 * core code.
178 */
179 IRQ_DOMAIN_FLAG_NONCORE = (1 << 16),
180};
181
Marc Zyngier10abc7d2015-10-09 15:50:11 +0100182static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
183{
Marc Zyngierf1107112015-10-13 12:51:30 +0100184 return to_of_node(d->fwnode);
Marc Zyngier10abc7d2015-10-09 15:50:11 +0100185}
186
Grant Likely7bb69ba2012-02-14 14:06:48 -0700187#ifdef CONFIG_IRQ_DOMAIN
Marc Zyngierb145dcc2015-10-13 12:51:36 +0100188struct fwnode_handle *irq_domain_alloc_fwnode(void *data);
189void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100190struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
Grant Likelyddaf1442013-06-10 01:06:02 +0100191 irq_hw_number_t hwirq_max, int direct_max,
Grant Likelyfa40f372013-06-08 12:57:40 +0100192 const struct irq_domain_ops *ops,
193 void *host_data);
Mark Brown781d0f42012-07-05 12:19:19 +0100194struct irq_domain *irq_domain_add_simple(struct device_node *of_node,
195 unsigned int size,
196 unsigned int first_irq,
197 const struct irq_domain_ops *ops,
198 void *host_data);
Grant Likelya8db8cf2012-02-14 14:06:54 -0700199struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
Grant Likely1bc04f22012-02-14 14:06:55 -0700200 unsigned int size,
201 unsigned int first_irq,
202 irq_hw_number_t first_hwirq,
Grant Likelya18dc812012-01-26 12:12:14 -0700203 const struct irq_domain_ops *ops,
Grant Likelya8db8cf2012-02-14 14:06:54 -0700204 void *host_data);
Marc Zyngier130b8c62015-10-13 12:51:31 +0100205extern struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
206 enum irq_domain_bus_token bus_token);
Grant Likelycc79ca62012-02-16 01:37:49 -0700207extern void irq_set_default_host(struct irq_domain *host);
Grant Likelycc79ca62012-02-16 01:37:49 -0700208
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100209static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
210{
211 return node ? &node->fwnode : NULL;
212}
213
Marc Zyngier130b8c62015-10-13 12:51:31 +0100214static inline struct irq_domain *irq_find_matching_host(struct device_node *node,
215 enum irq_domain_bus_token bus_token)
216{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100217 return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token);
Marc Zyngier130b8c62015-10-13 12:51:31 +0100218}
219
Marc Zyngierad3aedf2015-07-28 14:46:08 +0100220static inline struct irq_domain *irq_find_host(struct device_node *node)
221{
222 return irq_find_matching_host(node, DOMAIN_BUS_ANY);
223}
224
Grant Likelyfa40f372013-06-08 12:57:40 +0100225/**
226 * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
227 * @of_node: pointer to interrupt controller's device tree node.
228 * @size: Number of interrupts in the domain.
229 * @ops: map/unmap domain callbacks
230 * @host_data: Controller private data pointer
231 */
232static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
233 unsigned int size,
234 const struct irq_domain_ops *ops,
235 void *host_data)
236{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100237 return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data);
Grant Likelyfa40f372013-06-08 12:57:40 +0100238}
239static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
240 unsigned int max_irq,
241 const struct irq_domain_ops *ops,
242 void *host_data)
243{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100244 return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data);
Grant Likelyfa40f372013-06-08 12:57:40 +0100245}
Grant Likely1bc04f22012-02-14 14:06:55 -0700246static inline struct irq_domain *irq_domain_add_legacy_isa(
247 struct device_node *of_node,
Grant Likelya18dc812012-01-26 12:12:14 -0700248 const struct irq_domain_ops *ops,
Grant Likely1bc04f22012-02-14 14:06:55 -0700249 void *host_data)
250{
251 return irq_domain_add_legacy(of_node, NUM_ISA_INTERRUPTS, 0, 0, ops,
252 host_data);
253}
Grant Likelycef50752012-07-11 17:24:31 +0100254static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
255 const struct irq_domain_ops *ops,
256 void *host_data)
257{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100258 return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data);
259}
260
261static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode,
262 unsigned int size,
263 const struct irq_domain_ops *ops,
264 void *host_data)
265{
266 return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
267}
268
269static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode,
270 const struct irq_domain_ops *ops,
271 void *host_data)
272{
273 return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data);
Grant Likelycef50752012-07-11 17:24:31 +0100274}
Paul Mundt58ee99a2012-05-19 15:11:41 +0900275
276extern void irq_domain_remove(struct irq_domain *host);
277
Grant Likelyddaf1442013-06-10 01:06:02 +0100278extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
279 irq_hw_number_t hwirq);
280extern void irq_domain_associate_many(struct irq_domain *domain,
281 unsigned int irq_base,
282 irq_hw_number_t hwirq_base, int count);
Jiang Liu43a77592014-06-09 16:20:05 +0800283extern void irq_domain_disassociate(struct irq_domain *domain,
284 unsigned int irq);
Grant Likely98aa4682012-06-17 16:17:04 -0600285
Grant Likelycc79ca62012-02-16 01:37:49 -0700286extern unsigned int irq_create_mapping(struct irq_domain *host,
287 irq_hw_number_t hwirq);
Marc Zyngierc0131f02015-10-13 12:51:34 +0100288extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
Grant Likelycc79ca62012-02-16 01:37:49 -0700289extern void irq_dispose_mapping(unsigned int virq);
Grant Likelyd3dcb432013-06-10 12:19:17 +0100290
291/**
292 * irq_linear_revmap() - Find a linux irq from a hw irq number.
293 * @domain: domain owning this hardware interrupt
294 * @hwirq: hardware irq number in that domain space
295 *
296 * This is a fast path alternative to irq_find_mapping() that can be
297 * called directly by irq controller code to save a handful of
298 * instructions. It is always safe to call, but won't find irqs mapped
299 * using the radix tree.
300 */
301static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
302 irq_hw_number_t hwirq)
303{
304 return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0;
305}
Grant Likelycc79ca62012-02-16 01:37:49 -0700306extern unsigned int irq_find_mapping(struct irq_domain *host,
307 irq_hw_number_t hwirq);
308extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
Grant Likely98aa4682012-06-17 16:17:04 -0600309extern int irq_create_strict_mappings(struct irq_domain *domain,
310 unsigned int irq_base,
311 irq_hw_number_t hwirq_base, int count);
312
313static inline int irq_create_identity_mapping(struct irq_domain *host,
314 irq_hw_number_t hwirq)
315{
316 return irq_create_strict_mappings(host, hwirq, hwirq, 1);
317}
318
Grant Likelya18dc812012-01-26 12:12:14 -0700319extern const struct irq_domain_ops irq_domain_simple_ops;
Grant Likely16b2e6e2012-01-26 11:26:52 -0700320
321/* stock xlate functions */
322int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr,
323 const u32 *intspec, unsigned int intsize,
324 irq_hw_number_t *out_hwirq, unsigned int *out_type);
325int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr,
326 const u32 *intspec, unsigned int intsize,
327 irq_hw_number_t *out_hwirq, unsigned int *out_type);
328int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
329 const u32 *intspec, unsigned int intsize,
330 irq_hw_number_t *out_hwirq, unsigned int *out_type);
331
Jiang Liuf8264e32014-11-06 22:20:14 +0800332/* V2 interfaces to support hierarchy IRQ domains. */
333extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
334 unsigned int virq);
Stefan Agner5f22f5c2015-05-16 11:44:13 +0200335extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
336 irq_hw_number_t hwirq, struct irq_chip *chip,
337 void *chip_data, irq_flow_handler_t handler,
338 void *handler_data, const char *handler_name);
Jiang Liuf8264e32014-11-06 22:20:14 +0800339#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
Marc Zyngier2a5e9a02015-10-13 12:51:43 +0100340extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
Jiang Liuafb7da82014-11-15 22:24:02 +0800341 unsigned int flags, unsigned int size,
Marc Zyngier2a5e9a02015-10-13 12:51:43 +0100342 struct fwnode_handle *fwnode,
Jiang Liuafb7da82014-11-15 22:24:02 +0800343 const struct irq_domain_ops *ops, void *host_data);
Marc Zyngier2a5e9a02015-10-13 12:51:43 +0100344
345static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
346 unsigned int flags,
347 unsigned int size,
348 struct device_node *node,
349 const struct irq_domain_ops *ops,
350 void *host_data)
351{
352 return irq_domain_create_hierarchy(parent, flags, size,
353 of_node_to_fwnode(node),
354 ops, host_data);
355}
356
Jiang Liuf8264e32014-11-06 22:20:14 +0800357extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
358 unsigned int nr_irqs, int node, void *arg,
359 bool realloc);
360extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
361extern void irq_domain_activate_irq(struct irq_data *irq_data);
362extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
363
364static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
365 unsigned int nr_irqs, int node, void *arg)
366{
367 return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false);
368}
369
370extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
371 unsigned int virq,
372 irq_hw_number_t hwirq,
373 struct irq_chip *chip,
374 void *chip_data);
375extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
376extern void irq_domain_free_irqs_common(struct irq_domain *domain,
377 unsigned int virq,
378 unsigned int nr_irqs);
379extern void irq_domain_free_irqs_top(struct irq_domain *domain,
380 unsigned int virq, unsigned int nr_irqs);
381
Jiang Liu36d72732014-11-15 22:24:01 +0800382extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
383 unsigned int irq_base,
384 unsigned int nr_irqs, void *arg);
Jiang Liuf8264e32014-11-06 22:20:14 +0800385
Jiang Liu36d72732014-11-15 22:24:01 +0800386extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
387 unsigned int irq_base,
388 unsigned int nr_irqs);
Jiang Liuf8264e32014-11-06 22:20:14 +0800389
390static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
391{
392 return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
393}
394#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
395static inline void irq_domain_activate_irq(struct irq_data *data) { }
396static inline void irq_domain_deactivate_irq(struct irq_data *data) { }
397static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
398 unsigned int nr_irqs, int node, void *arg)
399{
400 return -1;
401}
402
403static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
404{
405 return false;
406}
407#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
408
Grant Likelyd593f252012-02-24 08:24:17 -0700409#else /* CONFIG_IRQ_DOMAIN */
410static inline void irq_dispose_mapping(unsigned int virq) { }
Jiang Liuf8264e32014-11-06 22:20:14 +0800411static inline void irq_domain_activate_irq(struct irq_data *data) { }
412static inline void irq_domain_deactivate_irq(struct irq_data *data) { }
Grant Likelyd593f252012-02-24 08:24:17 -0700413#endif /* !CONFIG_IRQ_DOMAIN */
Grant Likely7e713302011-07-26 03:19:06 -0600414
Grant Likely08a543a2011-07-26 03:19:06 -0600415#endif /* _LINUX_IRQDOMAIN_H */