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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,
Qais Yousef29d5c8d2015-12-08 13:20:13 +000077 DOMAIN_BUS_IPI,
J. German Rivera9b1b2822016-01-06 16:03:19 -060078 DOMAIN_BUS_FSL_MC_MSI,
Marc Zyngierad3aedf2015-07-28 14:46:08 +010079};
80
Grant Likely08a543a2011-07-26 03:19:06 -060081/**
82 * struct irq_domain_ops - Methods for irq_domain objects
Grant Likely7bb69ba2012-02-14 14:06:48 -070083 * @match: Match an interrupt controller device node to a host, returns
84 * 1 on a match
85 * @map: Create or update a mapping between a virtual irq number and a hw
86 * irq number. This is called only once for a given mapping.
87 * @unmap: Dispose of such a mapping
Grant Likely7bb69ba2012-02-14 14:06:48 -070088 * @xlate: Given a device tree node and interrupt specifier, decode
89 * the hardware irq number and linux irq type value.
90 *
91 * Functions below are provided by the driver and called whenever a new mapping
92 * is created or an old mapping is disposed. The driver can then proceed to
93 * whatever internal data structures management is required. It also needs
94 * to setup the irq_desc when returning from map().
Grant Likely08a543a2011-07-26 03:19:06 -060095 */
96struct irq_domain_ops {
Marc Zyngierad3aedf2015-07-28 14:46:08 +010097 int (*match)(struct irq_domain *d, struct device_node *node,
98 enum irq_domain_bus_token bus_token);
Grant Likely7bb69ba2012-02-14 14:06:48 -070099 int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw);
100 void (*unmap)(struct irq_domain *d, unsigned int virq);
Grant Likely7bb69ba2012-02-14 14:06:48 -0700101 int (*xlate)(struct irq_domain *d, struct device_node *node,
102 const u32 *intspec, unsigned int intsize,
103 unsigned long *out_hwirq, unsigned int *out_type);
Jiang Liuf8264e32014-11-06 22:20:14 +0800104
105#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
106 /* extended V2 interfaces to support hierarchy irq_domains */
107 int (*alloc)(struct irq_domain *d, unsigned int virq,
108 unsigned int nr_irqs, void *arg);
109 void (*free)(struct irq_domain *d, unsigned int virq,
110 unsigned int nr_irqs);
111 void (*activate)(struct irq_domain *d, struct irq_data *irq_data);
112 void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data);
Marc Zyngier11e4438e2015-10-13 12:51:32 +0100113 int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec,
114 unsigned long *out_hwirq, unsigned int *out_type);
Jiang Liuf8264e32014-11-06 22:20:14 +0800115#endif
Grant Likely08a543a2011-07-26 03:19:06 -0600116};
117
Thomas Gleixner088f40b2013-05-06 14:30:27 +0000118extern struct irq_domain_ops irq_generic_chip_ops;
119
120struct irq_domain_chip_generic;
121
Grant Likely08a543a2011-07-26 03:19:06 -0600122/**
123 * struct irq_domain - Hardware interrupt number translation object
Grant Likely7bb69ba2012-02-14 14:06:48 -0700124 * @link: Element in global irq_domain list.
Grant Likely1aa0dd92013-06-08 12:03:59 +0100125 * @name: Name of interrupt domain
Grant Likely7bb69ba2012-02-14 14:06:48 -0700126 * @ops: pointer to irq_domain methods
127 * @host_data: private data pointer for use by owner. Not touched by irq_domain
128 * core code.
Jiang Liuf8264e32014-11-06 22:20:14 +0800129 * @flags: host per irq_domain flags
Grant Likely1aa0dd92013-06-08 12:03:59 +0100130 *
131 * Optional elements
132 * @of_node: Pointer to device tree nodes associated with the irq_domain. Used
133 * when decoding device tree interrupt specifiers.
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.
Jiang Liuf8264e32014-11-06 22:20:14 +0800137 * @parent: Pointer to parent irq_domain to support hierarchy irq_domains
Grant Likely1aa0dd92013-06-08 12:03:59 +0100138 *
139 * Revmap data, used internally by irq_domain
140 * @revmap_direct_max_irq: The largest hwirq that can be set for controllers that
141 * support direct mapping
142 * @revmap_size: Size of the linear map table @linear_revmap[]
143 * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map
144 * @linear_revmap: Linear table of hwirq->virq reverse mappings
Grant Likely08a543a2011-07-26 03:19:06 -0600145 */
146struct irq_domain {
Grant Likely7bb69ba2012-02-14 14:06:48 -0700147 struct list_head link;
Grant Likely0bb4afb2013-06-06 14:23:30 +0100148 const char *name;
Grant Likelya18dc812012-01-26 12:12:14 -0700149 const struct irq_domain_ops *ops;
Grant Likely7bb69ba2012-02-14 14:06:48 -0700150 void *host_data;
Jiang Liuf8264e32014-11-06 22:20:14 +0800151 unsigned int flags;
Grant Likely7bb69ba2012-02-14 14:06:48 -0700152
Grant Likely1aa0dd92013-06-08 12:03:59 +0100153 /* Optional data */
Marc Zyngierf1107112015-10-13 12:51:30 +0100154 struct fwnode_handle *fwnode;
Marc Zyngierad3aedf2015-07-28 14:46:08 +0100155 enum irq_domain_bus_token bus_token;
Thomas Gleixner088f40b2013-05-06 14:30:27 +0000156 struct irq_domain_chip_generic *gc;
Jiang Liuf8264e32014-11-06 22:20:14 +0800157#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
158 struct irq_domain *parent;
159#endif
Grant Likelycef50752012-07-11 17:24:31 +0100160
Grant Likely1aa0dd92013-06-08 12:03:59 +0100161 /* reverse map data. The linear map gets appended to the irq_domain */
Grant Likelyddaf1442013-06-10 01:06:02 +0100162 irq_hw_number_t hwirq_max;
Grant Likely1aa0dd92013-06-08 12:03:59 +0100163 unsigned int revmap_direct_max_irq;
164 unsigned int revmap_size;
165 struct radix_tree_root revmap_tree;
Grant Likelycef50752012-07-11 17:24:31 +0100166 unsigned int linear_revmap[];
Grant Likely08a543a2011-07-26 03:19:06 -0600167};
168
Jiang Liuf8264e32014-11-06 22:20:14 +0800169/* Irq domain flags */
170enum {
171 /* Irq domain is hierarchical */
172 IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0),
173
Jiang Liu36d72732014-11-15 22:24:01 +0800174 /* Core calls alloc/free recursive through the domain hierarchy. */
175 IRQ_DOMAIN_FLAG_AUTO_RECURSIVE = (1 << 1),
176
Qais Yousef0abefba2015-12-08 13:20:12 +0000177 /* Irq domain is an IPI domain with virq per cpu */
178 IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2),
179
180 /* Irq domain is an IPI domain with single virq */
181 IRQ_DOMAIN_FLAG_IPI_SINGLE = (1 << 3),
182
Jiang Liuf8264e32014-11-06 22:20:14 +0800183 /*
184 * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
185 * for implementation specific purposes and ignored by the
186 * core code.
187 */
188 IRQ_DOMAIN_FLAG_NONCORE = (1 << 16),
189};
190
Marc Zyngier10abc7d2015-10-09 15:50:11 +0100191static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
192{
Marc Zyngierf1107112015-10-13 12:51:30 +0100193 return to_of_node(d->fwnode);
Marc Zyngier10abc7d2015-10-09 15:50:11 +0100194}
195
Grant Likely7bb69ba2012-02-14 14:06:48 -0700196#ifdef CONFIG_IRQ_DOMAIN
Marc Zyngierb145dcc2015-10-13 12:51:36 +0100197struct fwnode_handle *irq_domain_alloc_fwnode(void *data);
198void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100199struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
Grant Likelyddaf1442013-06-10 01:06:02 +0100200 irq_hw_number_t hwirq_max, int direct_max,
Grant Likelyfa40f372013-06-08 12:57:40 +0100201 const struct irq_domain_ops *ops,
202 void *host_data);
Mark Brown781d0f42012-07-05 12:19:19 +0100203struct irq_domain *irq_domain_add_simple(struct device_node *of_node,
204 unsigned int size,
205 unsigned int first_irq,
206 const struct irq_domain_ops *ops,
207 void *host_data);
Grant Likelya8db8cf2012-02-14 14:06:54 -0700208struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
Grant Likely1bc04f22012-02-14 14:06:55 -0700209 unsigned int size,
210 unsigned int first_irq,
211 irq_hw_number_t first_hwirq,
Grant Likelya18dc812012-01-26 12:12:14 -0700212 const struct irq_domain_ops *ops,
Grant Likelya8db8cf2012-02-14 14:06:54 -0700213 void *host_data);
Marc Zyngier130b8c62015-10-13 12:51:31 +0100214extern struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
215 enum irq_domain_bus_token bus_token);
Grant Likelycc79ca62012-02-16 01:37:49 -0700216extern void irq_set_default_host(struct irq_domain *host);
Qais Yousefac0a0cd2015-12-08 13:20:18 +0000217extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs,
218 irq_hw_number_t hwirq, int node);
Grant Likelycc79ca62012-02-16 01:37:49 -0700219
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100220static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
221{
222 return node ? &node->fwnode : NULL;
223}
224
Suravee Suthikulpanit75aba7b2015-12-10 08:55:28 -0800225static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode)
226{
227 return fwnode && fwnode->type == FWNODE_IRQCHIP;
228}
229
Marc Zyngier130b8c62015-10-13 12:51:31 +0100230static inline struct irq_domain *irq_find_matching_host(struct device_node *node,
231 enum irq_domain_bus_token bus_token)
232{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100233 return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token);
Marc Zyngier130b8c62015-10-13 12:51:31 +0100234}
235
Marc Zyngierad3aedf2015-07-28 14:46:08 +0100236static inline struct irq_domain *irq_find_host(struct device_node *node)
237{
238 return irq_find_matching_host(node, DOMAIN_BUS_ANY);
239}
240
Grant Likelyfa40f372013-06-08 12:57:40 +0100241/**
242 * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
243 * @of_node: pointer to interrupt controller's device tree node.
244 * @size: Number of interrupts in the domain.
245 * @ops: map/unmap domain callbacks
246 * @host_data: Controller private data pointer
247 */
248static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
249 unsigned int size,
250 const struct irq_domain_ops *ops,
251 void *host_data)
252{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100253 return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data);
Grant Likelyfa40f372013-06-08 12:57:40 +0100254}
255static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
256 unsigned int max_irq,
257 const struct irq_domain_ops *ops,
258 void *host_data)
259{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100260 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 +0100261}
Grant Likely1bc04f22012-02-14 14:06:55 -0700262static inline struct irq_domain *irq_domain_add_legacy_isa(
263 struct device_node *of_node,
Grant Likelya18dc812012-01-26 12:12:14 -0700264 const struct irq_domain_ops *ops,
Grant Likely1bc04f22012-02-14 14:06:55 -0700265 void *host_data)
266{
267 return irq_domain_add_legacy(of_node, NUM_ISA_INTERRUPTS, 0, 0, ops,
268 host_data);
269}
Grant Likelycef50752012-07-11 17:24:31 +0100270static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
271 const struct irq_domain_ops *ops,
272 void *host_data)
273{
Marc Zyngier1bf4ddc2015-10-13 12:51:35 +0100274 return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data);
275}
276
277static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode,
278 unsigned int size,
279 const struct irq_domain_ops *ops,
280 void *host_data)
281{
282 return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
283}
284
285static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode,
286 const struct irq_domain_ops *ops,
287 void *host_data)
288{
289 return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data);
Grant Likelycef50752012-07-11 17:24:31 +0100290}
Paul Mundt58ee99a2012-05-19 15:11:41 +0900291
292extern void irq_domain_remove(struct irq_domain *host);
293
Grant Likelyddaf1442013-06-10 01:06:02 +0100294extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
295 irq_hw_number_t hwirq);
296extern void irq_domain_associate_many(struct irq_domain *domain,
297 unsigned int irq_base,
298 irq_hw_number_t hwirq_base, int count);
Jiang Liu43a77592014-06-09 16:20:05 +0800299extern void irq_domain_disassociate(struct irq_domain *domain,
300 unsigned int irq);
Grant Likely98aa4682012-06-17 16:17:04 -0600301
Grant Likelycc79ca62012-02-16 01:37:49 -0700302extern unsigned int irq_create_mapping(struct irq_domain *host,
303 irq_hw_number_t hwirq);
Marc Zyngierc0131f02015-10-13 12:51:34 +0100304extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
Grant Likelycc79ca62012-02-16 01:37:49 -0700305extern void irq_dispose_mapping(unsigned int virq);
Grant Likelyd3dcb432013-06-10 12:19:17 +0100306
307/**
308 * irq_linear_revmap() - Find a linux irq from a hw irq number.
309 * @domain: domain owning this hardware interrupt
310 * @hwirq: hardware irq number in that domain space
311 *
312 * This is a fast path alternative to irq_find_mapping() that can be
313 * called directly by irq controller code to save a handful of
314 * instructions. It is always safe to call, but won't find irqs mapped
315 * using the radix tree.
316 */
317static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
318 irq_hw_number_t hwirq)
319{
320 return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0;
321}
Grant Likelycc79ca62012-02-16 01:37:49 -0700322extern unsigned int irq_find_mapping(struct irq_domain *host,
323 irq_hw_number_t hwirq);
324extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
Grant Likely98aa4682012-06-17 16:17:04 -0600325extern int irq_create_strict_mappings(struct irq_domain *domain,
326 unsigned int irq_base,
327 irq_hw_number_t hwirq_base, int count);
328
329static inline int irq_create_identity_mapping(struct irq_domain *host,
330 irq_hw_number_t hwirq)
331{
332 return irq_create_strict_mappings(host, hwirq, hwirq, 1);
333}
334
Grant Likelya18dc812012-01-26 12:12:14 -0700335extern const struct irq_domain_ops irq_domain_simple_ops;
Grant Likely16b2e6e2012-01-26 11:26:52 -0700336
337/* stock xlate functions */
338int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr,
339 const u32 *intspec, unsigned int intsize,
340 irq_hw_number_t *out_hwirq, unsigned int *out_type);
341int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr,
342 const u32 *intspec, unsigned int intsize,
343 irq_hw_number_t *out_hwirq, unsigned int *out_type);
344int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
345 const u32 *intspec, unsigned int intsize,
346 irq_hw_number_t *out_hwirq, unsigned int *out_type);
347
Qais Yousefd17bf242015-12-08 13:20:19 +0000348/* IPI functions */
349unsigned int irq_reserve_ipi(struct irq_domain *domain,
350 const struct cpumask *dest);
351void irq_destroy_ipi(unsigned int irq);
352
Jiang Liuf8264e32014-11-06 22:20:14 +0800353/* V2 interfaces to support hierarchy IRQ domains. */
354extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
355 unsigned int virq);
Stefan Agner5f22f5c2015-05-16 11:44:13 +0200356extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
357 irq_hw_number_t hwirq, struct irq_chip *chip,
358 void *chip_data, irq_flow_handler_t handler,
359 void *handler_data, const char *handler_name);
Jiang Liuf8264e32014-11-06 22:20:14 +0800360#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
Marc Zyngier2a5e9a02015-10-13 12:51:43 +0100361extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
Jiang Liuafb7da82014-11-15 22:24:02 +0800362 unsigned int flags, unsigned int size,
Marc Zyngier2a5e9a02015-10-13 12:51:43 +0100363 struct fwnode_handle *fwnode,
Jiang Liuafb7da82014-11-15 22:24:02 +0800364 const struct irq_domain_ops *ops, void *host_data);
Marc Zyngier2a5e9a02015-10-13 12:51:43 +0100365
366static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
367 unsigned int flags,
368 unsigned int size,
369 struct device_node *node,
370 const struct irq_domain_ops *ops,
371 void *host_data)
372{
373 return irq_domain_create_hierarchy(parent, flags, size,
374 of_node_to_fwnode(node),
375 ops, host_data);
376}
377
Jiang Liuf8264e32014-11-06 22:20:14 +0800378extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
379 unsigned int nr_irqs, int node, void *arg,
380 bool realloc);
381extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
382extern void irq_domain_activate_irq(struct irq_data *irq_data);
383extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
384
385static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
386 unsigned int nr_irqs, int node, void *arg)
387{
388 return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false);
389}
390
Marc Zyngierc4665952015-11-23 08:26:04 +0000391extern int irq_domain_alloc_irqs_recursive(struct irq_domain *domain,
392 unsigned int irq_base,
393 unsigned int nr_irqs, void *arg);
Jiang Liuf8264e32014-11-06 22:20:14 +0800394extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
395 unsigned int virq,
396 irq_hw_number_t hwirq,
397 struct irq_chip *chip,
398 void *chip_data);
399extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
400extern void irq_domain_free_irqs_common(struct irq_domain *domain,
401 unsigned int virq,
402 unsigned int nr_irqs);
403extern void irq_domain_free_irqs_top(struct irq_domain *domain,
404 unsigned int virq, unsigned int nr_irqs);
405
Jiang Liu36d72732014-11-15 22:24:01 +0800406extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
407 unsigned int irq_base,
408 unsigned int nr_irqs, void *arg);
Jiang Liuf8264e32014-11-06 22:20:14 +0800409
Jiang Liu36d72732014-11-15 22:24:01 +0800410extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
411 unsigned int irq_base,
412 unsigned int nr_irqs);
Jiang Liuf8264e32014-11-06 22:20:14 +0800413
414static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
415{
416 return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
417}
Qais Yousef0abefba2015-12-08 13:20:12 +0000418
419static inline bool irq_domain_is_ipi(struct irq_domain *domain)
420{
421 return domain->flags &
422 (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE);
423}
424
425static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
426{
427 return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU;
428}
429
430static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
431{
432 return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE;
433}
Jiang Liuf8264e32014-11-06 22:20:14 +0800434#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
435static inline void irq_domain_activate_irq(struct irq_data *data) { }
436static inline void irq_domain_deactivate_irq(struct irq_data *data) { }
437static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
438 unsigned int nr_irqs, int node, void *arg)
439{
440 return -1;
441}
442
443static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
444{
445 return false;
446}
Qais Yousef0abefba2015-12-08 13:20:12 +0000447
448static inline bool irq_domain_is_ipi(struct irq_domain *domain)
449{
450 return false;
451}
452
453static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
454{
455 return false;
456}
457
458static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
459{
460 return false;
461}
Jiang Liuf8264e32014-11-06 22:20:14 +0800462#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
463
Grant Likelyd593f252012-02-24 08:24:17 -0700464#else /* CONFIG_IRQ_DOMAIN */
465static inline void irq_dispose_mapping(unsigned int virq) { }
Jiang Liuf8264e32014-11-06 22:20:14 +0800466static inline void irq_domain_activate_irq(struct irq_data *data) { }
467static inline void irq_domain_deactivate_irq(struct irq_data *data) { }
Suravee Suthikulpanit471036b2015-12-10 08:55:27 -0800468static inline struct irq_domain *irq_find_matching_fwnode(
469 struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token)
470{
471 return NULL;
472}
Grant Likelyd593f252012-02-24 08:24:17 -0700473#endif /* !CONFIG_IRQ_DOMAIN */
Grant Likely7e713302011-07-26 03:19:06 -0600474
Grant Likely08a543a2011-07-26 03:19:06 -0600475#endif /* _LINUX_IRQDOMAIN_H */