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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 Zyngier530cbe12016-01-26 13:52:25 +000073 DOMAIN_BUS_WIRED,
Marc Zyngier03808392015-07-28 14:46:09 +010074 DOMAIN_BUS_PCI_MSI,
Marc Zyngierc706c232015-07-28 14:46:15 +010075 DOMAIN_BUS_PLATFORM_MSI,
Marc Zyngiera5716072015-07-28 14:46:17 +010076 DOMAIN_BUS_NEXUS,
Marc Zyngierad3aedf2015-07-28 14:46:08 +010077};
78
Grant Likely08a543a2011-07-26 03:19:06 -060079/**
80 * struct irq_domain_ops - Methods for irq_domain objects
Grant Likely7bb69ba2012-02-14 14:06:48 -070081 * @match: Match an interrupt controller device node to a host, returns
82 * 1 on a match
83 * @map: Create or update a mapping between a virtual irq number and a hw
84 * irq number. This is called only once for a given mapping.
85 * @unmap: Dispose of such a mapping
Grant Likely7bb69ba2012-02-14 14:06:48 -070086 * @xlate: Given a device tree node and interrupt specifier, decode
87 * the hardware irq number and linux irq type value.
88 *
89 * Functions below are provided by the driver and called whenever a new mapping
90 * is created or an old mapping is disposed. The driver can then proceed to
91 * whatever internal data structures management is required. It also needs
92 * to setup the irq_desc when returning from map().
Grant Likely08a543a2011-07-26 03:19:06 -060093 */
94struct irq_domain_ops {
Marc Zyngierad3aedf2015-07-28 14:46:08 +010095 int (*match)(struct irq_domain *d, struct device_node *node,
96 enum irq_domain_bus_token bus_token);
Grant Likely7bb69ba2012-02-14 14:06:48 -070097 int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw);
98 void (*unmap)(struct irq_domain *d, unsigned int virq);
Grant Likely7bb69ba2012-02-14 14:06:48 -070099 int (*xlate)(struct irq_domain *d, struct device_node *node,
100 const u32 *intspec, unsigned int intsize,
101 unsigned long *out_hwirq, unsigned int *out_type);
Jiang Liuf8264e32014-11-06 22:20:14 +0800102
103#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
104 /* extended V2 interfaces to support hierarchy irq_domains */
105 int (*alloc)(struct irq_domain *d, unsigned int virq,
106 unsigned int nr_irqs, void *arg);
107 void (*free)(struct irq_domain *d, unsigned int virq,
108 unsigned int nr_irqs);
109 void (*activate)(struct irq_domain *d, struct irq_data *irq_data);
110 void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data);
Marc Zyngier11e4438e2015-10-13 12:51:32 +0100111 int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec,
112 unsigned long *out_hwirq, unsigned int *out_type);
Jiang Liuf8264e32014-11-06 22:20:14 +0800113#endif
Grant Likely08a543a2011-07-26 03:19:06 -0600114};
115
Thomas Gleixner088f40b2013-05-06 14:30:27 +0000116extern struct irq_domain_ops irq_generic_chip_ops;
117
118struct irq_domain_chip_generic;
119
Grant Likely08a543a2011-07-26 03:19:06 -0600120/**
121 * struct irq_domain - Hardware interrupt number translation object
Grant Likely7bb69ba2012-02-14 14:06:48 -0700122 * @link: Element in global irq_domain list.
Grant Likely1aa0dd92013-06-08 12:03:59 +0100123 * @name: Name of interrupt domain
Grant Likely7bb69ba2012-02-14 14:06:48 -0700124 * @ops: pointer to irq_domain methods
125 * @host_data: private data pointer for use by owner. Not touched by irq_domain
126 * core code.
Jiang Liuf8264e32014-11-06 22:20:14 +0800127 * @flags: host per irq_domain flags
Grant Likely1aa0dd92013-06-08 12:03:59 +0100128 *
129 * Optional elements
130 * @of_node: Pointer to device tree nodes associated with the irq_domain. Used
131 * when decoding device tree interrupt specifiers.
132 * @gc: Pointer to a list of generic chips. There is a helper function for
133 * setting up one or more generic chips for interrupt controllers
134 * drivers using the generic chip library which uses this pointer.
Jiang Liuf8264e32014-11-06 22:20:14 +0800135 * @parent: Pointer to parent irq_domain to support hierarchy irq_domains
Grant Likely1aa0dd92013-06-08 12:03:59 +0100136 *
137 * Revmap data, used internally by irq_domain
138 * @revmap_direct_max_irq: The largest hwirq that can be set for controllers that
139 * support direct mapping
140 * @revmap_size: Size of the linear map table @linear_revmap[]
141 * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map
142 * @linear_revmap: Linear table of hwirq->virq reverse mappings
Grant Likely08a543a2011-07-26 03:19:06 -0600143 */
144struct irq_domain {
Grant Likely7bb69ba2012-02-14 14:06:48 -0700145 struct list_head link;
Grant Likely0bb4afb2013-06-06 14:23:30 +0100146 const char *name;
Grant Likelya18dc812012-01-26 12:12:14 -0700147 const struct irq_domain_ops *ops;
Grant Likely7bb69ba2012-02-14 14:06:48 -0700148 void *host_data;
Jiang Liuf8264e32014-11-06 22:20:14 +0800149 unsigned int flags;
Grant Likely7bb69ba2012-02-14 14:06:48 -0700150
Grant Likely1aa0dd92013-06-08 12:03:59 +0100151 /* Optional data */
Marc Zyngierf1107112015-10-13 12:51:30 +0100152 struct fwnode_handle *fwnode;
Marc Zyngierad3aedf2015-07-28 14:46:08 +0100153 enum irq_domain_bus_token bus_token;
Thomas Gleixner088f40b2013-05-06 14:30:27 +0000154 struct irq_domain_chip_generic *gc;
Jiang Liuf8264e32014-11-06 22:20:14 +0800155#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
156 struct irq_domain *parent;
157#endif
Grant Likelycef50752012-07-11 17:24:31 +0100158
Grant Likely1aa0dd92013-06-08 12:03:59 +0100159 /* reverse map data. The linear map gets appended to the irq_domain */
Grant Likelyddaf1442013-06-10 01:06:02 +0100160 irq_hw_number_t hwirq_max;
Grant Likely1aa0dd92013-06-08 12:03:59 +0100161 unsigned int revmap_direct_max_irq;
162 unsigned int revmap_size;
163 struct radix_tree_root revmap_tree;
Grant Likelycef50752012-07-11 17:24:31 +0100164 unsigned int linear_revmap[];
Grant Likely08a543a2011-07-26 03:19:06 -0600165};
166
Jiang Liuf8264e32014-11-06 22:20:14 +0800167/* Irq domain flags */
168enum {
169 /* Irq domain is hierarchical */
170 IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0),
171
Jiang Liu36d72732014-11-15 22:24:01 +0800172 /* Core calls alloc/free recursive through the domain hierarchy. */
173 IRQ_DOMAIN_FLAG_AUTO_RECURSIVE = (1 << 1),
174
Jiang Liuf8264e32014-11-06 22:20:14 +0800175 /*
176 * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
177 * for implementation specific purposes and ignored by the
178 * core code.
179 */
180 IRQ_DOMAIN_FLAG_NONCORE = (1 << 16),
181};
182
Marc Zyngier10abc7d2015-10-09 15:50:11 +0100183static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
184{
Marc Zyngierf1107112015-10-13 12:51:30 +0100185 return to_of_node(d->fwnode);
Marc Zyngier10abc7d2015-10-09 15:50:11 +0100186}
187
Grant Likely7bb69ba2012-02-14 14:06:48 -0700188#ifdef CONFIG_IRQ_DOMAIN
Marc Zyngierb145dcc2015-10-13 12:51:36 +0100189struct fwnode_handle *irq_domain_alloc_fwnode(void *data);
190void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100191struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
Grant Likelyddaf1442013-06-10 01:06:02 +0100192 irq_hw_number_t hwirq_max, int direct_max,
Grant Likelyfa40f372013-06-08 12:57:40 +0100193 const struct irq_domain_ops *ops,
194 void *host_data);
Mark Brown781d0f42012-07-05 12:19:19 +0100195struct irq_domain *irq_domain_add_simple(struct device_node *of_node,
196 unsigned int size,
197 unsigned int first_irq,
198 const struct irq_domain_ops *ops,
199 void *host_data);
Grant Likelya8db8cf2012-02-14 14:06:54 -0700200struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
Grant Likely1bc04f22012-02-14 14:06:55 -0700201 unsigned int size,
202 unsigned int first_irq,
203 irq_hw_number_t first_hwirq,
Grant Likelya18dc812012-01-26 12:12:14 -0700204 const struct irq_domain_ops *ops,
Grant Likelya8db8cf2012-02-14 14:06:54 -0700205 void *host_data);
Marc Zyngier130b8c62015-10-13 12:51:31 +0100206extern struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
207 enum irq_domain_bus_token bus_token);
Grant Likelycc79ca62012-02-16 01:37:49 -0700208extern void irq_set_default_host(struct irq_domain *host);
Grant Likelycc79ca62012-02-16 01:37:49 -0700209
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100210static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
211{
212 return node ? &node->fwnode : NULL;
213}
214
Suravee Suthikulpanit75aba7b2015-12-10 08:55:28 -0800215static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode)
216{
217 return fwnode && fwnode->type == FWNODE_IRQCHIP;
218}
219
Marc Zyngier130b8c62015-10-13 12:51:31 +0100220static inline struct irq_domain *irq_find_matching_host(struct device_node *node,
221 enum irq_domain_bus_token bus_token)
222{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100223 return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token);
Marc Zyngier130b8c62015-10-13 12:51:31 +0100224}
225
Marc Zyngierad3aedf2015-07-28 14:46:08 +0100226static inline struct irq_domain *irq_find_host(struct device_node *node)
227{
228 return irq_find_matching_host(node, DOMAIN_BUS_ANY);
229}
230
Grant Likelyfa40f372013-06-08 12:57:40 +0100231/**
232 * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
233 * @of_node: pointer to interrupt controller's device tree node.
234 * @size: Number of interrupts in the domain.
235 * @ops: map/unmap domain callbacks
236 * @host_data: Controller private data pointer
237 */
238static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
239 unsigned int size,
240 const struct irq_domain_ops *ops,
241 void *host_data)
242{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100243 return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data);
Grant Likelyfa40f372013-06-08 12:57:40 +0100244}
245static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
246 unsigned int max_irq,
247 const struct irq_domain_ops *ops,
248 void *host_data)
249{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100250 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 +0100251}
Grant Likely1bc04f22012-02-14 14:06:55 -0700252static inline struct irq_domain *irq_domain_add_legacy_isa(
253 struct device_node *of_node,
Grant Likelya18dc812012-01-26 12:12:14 -0700254 const struct irq_domain_ops *ops,
Grant Likely1bc04f22012-02-14 14:06:55 -0700255 void *host_data)
256{
257 return irq_domain_add_legacy(of_node, NUM_ISA_INTERRUPTS, 0, 0, ops,
258 host_data);
259}
Grant Likelycef50752012-07-11 17:24:31 +0100260static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
261 const struct irq_domain_ops *ops,
262 void *host_data)
263{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100264 return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data);
265}
266
267static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode,
268 unsigned int size,
269 const struct irq_domain_ops *ops,
270 void *host_data)
271{
272 return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
273}
274
275static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode,
276 const struct irq_domain_ops *ops,
277 void *host_data)
278{
279 return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data);
Grant Likelycef50752012-07-11 17:24:31 +0100280}
Paul Mundt58ee99a2012-05-19 15:11:41 +0900281
282extern void irq_domain_remove(struct irq_domain *host);
283
Grant Likelyddaf1442013-06-10 01:06:02 +0100284extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
285 irq_hw_number_t hwirq);
286extern void irq_domain_associate_many(struct irq_domain *domain,
287 unsigned int irq_base,
288 irq_hw_number_t hwirq_base, int count);
Jiang Liu43a77592014-06-09 16:20:05 +0800289extern void irq_domain_disassociate(struct irq_domain *domain,
290 unsigned int irq);
Grant Likely98aa4682012-06-17 16:17:04 -0600291
Grant Likelycc79ca62012-02-16 01:37:49 -0700292extern unsigned int irq_create_mapping(struct irq_domain *host,
293 irq_hw_number_t hwirq);
Marc Zyngierc0131f02015-10-13 12:51:34 +0100294extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
Grant Likelycc79ca62012-02-16 01:37:49 -0700295extern void irq_dispose_mapping(unsigned int virq);
Grant Likelyd3dcb432013-06-10 12:19:17 +0100296
297/**
298 * irq_linear_revmap() - Find a linux irq from a hw irq number.
299 * @domain: domain owning this hardware interrupt
300 * @hwirq: hardware irq number in that domain space
301 *
302 * This is a fast path alternative to irq_find_mapping() that can be
303 * called directly by irq controller code to save a handful of
304 * instructions. It is always safe to call, but won't find irqs mapped
305 * using the radix tree.
306 */
307static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
308 irq_hw_number_t hwirq)
309{
310 return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0;
311}
Grant Likelycc79ca62012-02-16 01:37:49 -0700312extern unsigned int irq_find_mapping(struct irq_domain *host,
313 irq_hw_number_t hwirq);
314extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
Grant Likely98aa4682012-06-17 16:17:04 -0600315extern int irq_create_strict_mappings(struct irq_domain *domain,
316 unsigned int irq_base,
317 irq_hw_number_t hwirq_base, int count);
318
319static inline int irq_create_identity_mapping(struct irq_domain *host,
320 irq_hw_number_t hwirq)
321{
322 return irq_create_strict_mappings(host, hwirq, hwirq, 1);
323}
324
Grant Likelya18dc812012-01-26 12:12:14 -0700325extern const struct irq_domain_ops irq_domain_simple_ops;
Grant Likely16b2e6e2012-01-26 11:26:52 -0700326
327/* stock xlate functions */
328int irq_domain_xlate_onecell(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);
331int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr,
332 const u32 *intspec, unsigned int intsize,
333 irq_hw_number_t *out_hwirq, unsigned int *out_type);
334int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
335 const u32 *intspec, unsigned int intsize,
336 irq_hw_number_t *out_hwirq, unsigned int *out_type);
337
Jiang Liuf8264e32014-11-06 22:20:14 +0800338/* V2 interfaces to support hierarchy IRQ domains. */
339extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
340 unsigned int virq);
Stefan Agner5f22f5c2015-05-16 11:44:13 +0200341extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
342 irq_hw_number_t hwirq, struct irq_chip *chip,
343 void *chip_data, irq_flow_handler_t handler,
344 void *handler_data, const char *handler_name);
Jiang Liuf8264e32014-11-06 22:20:14 +0800345#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
Marc Zyngier2a5e9a02015-10-13 12:51:43 +0100346extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
Jiang Liuafb7da82014-11-15 22:24:02 +0800347 unsigned int flags, unsigned int size,
Marc Zyngier2a5e9a02015-10-13 12:51:43 +0100348 struct fwnode_handle *fwnode,
Jiang Liuafb7da82014-11-15 22:24:02 +0800349 const struct irq_domain_ops *ops, void *host_data);
Marc Zyngier2a5e9a02015-10-13 12:51:43 +0100350
351static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
352 unsigned int flags,
353 unsigned int size,
354 struct device_node *node,
355 const struct irq_domain_ops *ops,
356 void *host_data)
357{
358 return irq_domain_create_hierarchy(parent, flags, size,
359 of_node_to_fwnode(node),
360 ops, host_data);
361}
362
Jiang Liuf8264e32014-11-06 22:20:14 +0800363extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
364 unsigned int nr_irqs, int node, void *arg,
365 bool realloc);
366extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
367extern void irq_domain_activate_irq(struct irq_data *irq_data);
368extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
369
370static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
371 unsigned int nr_irqs, int node, void *arg)
372{
373 return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false);
374}
375
Marc Zyngierc4665952015-11-23 08:26:04 +0000376extern int irq_domain_alloc_irqs_recursive(struct irq_domain *domain,
377 unsigned int irq_base,
378 unsigned int nr_irqs, void *arg);
Jiang Liuf8264e32014-11-06 22:20:14 +0800379extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
380 unsigned int virq,
381 irq_hw_number_t hwirq,
382 struct irq_chip *chip,
383 void *chip_data);
384extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
385extern void irq_domain_free_irqs_common(struct irq_domain *domain,
386 unsigned int virq,
387 unsigned int nr_irqs);
388extern void irq_domain_free_irqs_top(struct irq_domain *domain,
389 unsigned int virq, unsigned int nr_irqs);
390
Jiang Liu36d72732014-11-15 22:24:01 +0800391extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
392 unsigned int irq_base,
393 unsigned int nr_irqs, void *arg);
Jiang Liuf8264e32014-11-06 22:20:14 +0800394
Jiang Liu36d72732014-11-15 22:24:01 +0800395extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
396 unsigned int irq_base,
397 unsigned int nr_irqs);
Jiang Liuf8264e32014-11-06 22:20:14 +0800398
399static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
400{
401 return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
402}
403#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
404static inline void irq_domain_activate_irq(struct irq_data *data) { }
405static inline void irq_domain_deactivate_irq(struct irq_data *data) { }
406static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
407 unsigned int nr_irqs, int node, void *arg)
408{
409 return -1;
410}
411
412static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
413{
414 return false;
415}
416#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
417
Grant Likelyd593f252012-02-24 08:24:17 -0700418#else /* CONFIG_IRQ_DOMAIN */
419static inline void irq_dispose_mapping(unsigned int virq) { }
Jiang Liuf8264e32014-11-06 22:20:14 +0800420static inline void irq_domain_activate_irq(struct irq_data *data) { }
421static inline void irq_domain_deactivate_irq(struct irq_data *data) { }
Suravee Suthikulpanit471036b2015-12-10 08:55:27 -0800422static inline struct irq_domain *irq_find_matching_fwnode(
423 struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token)
424{
425 return NULL;
426}
Grant Likelyd593f252012-02-24 08:24:17 -0700427#endif /* !CONFIG_IRQ_DOMAIN */
Grant Likely7e713302011-07-26 03:19:06 -0600428
Grant Likely08a543a2011-07-26 03:19:06 -0600429#endif /* _LINUX_IRQDOMAIN_H */