1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __OF_IRQ_H
3#define __OF_IRQ_H
4
5#include <linux/types.h>
6#include <linux/errno.h>
7#include <linux/irq.h>
8#include <linux/irqdomain.h>
9#include <linux/ioport.h>
10#include <linux/of.h>
11
12typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
13
14/*
15 * Workarounds only applied to 32bit powermac machines
16 */
17#define OF_IMAP_OLDWORLD_MAC 0x00000001
18#define OF_IMAP_NO_PHANDLE 0x00000002
19
20#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
21extern unsigned int of_irq_workarounds;
22extern struct device_node *of_irq_dflt_pic;
23int of_irq_parse_oldworld(const struct device_node *device, int index,
24 struct of_phandle_args *out_irq);
25#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
26#define of_irq_workarounds (0)
27#define of_irq_dflt_pic (NULL)
28static inline int of_irq_parse_oldworld(const struct device_node *device, int index,
29 struct of_phandle_args *out_irq)
30{
31 return -EINVAL;
32}
33#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
34
35extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
36extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
37extern int of_irq_to_resource(struct device_node *dev, int index,
38 struct resource *r);
39
40#ifdef CONFIG_OF_IRQ
41extern void of_irq_init(const struct of_device_id *matches);
42extern int of_irq_parse_one(struct device_node *device, int index,
43 struct of_phandle_args *out_irq);
44extern int of_irq_count(struct device_node *dev);
45extern int of_irq_get(struct device_node *dev, int index);
46extern int of_irq_get_byname(struct device_node *dev, const char *name);
47extern int of_irq_to_resource_table(struct device_node *dev,
48 struct resource *res, int nr_irqs);
49extern struct device_node *of_irq_find_parent(struct device_node *child);
50extern struct irq_domain *of_msi_get_domain(struct device *dev,
51 const struct device_node *np,
52 enum irq_domain_bus_token token);
53extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
54 u32 id,
55 u32 bus_token);
56extern void of_msi_configure(struct device *dev, const struct device_node *np);
57extern u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in);
58#else
59static inline void of_irq_init(const struct of_device_id *matches)
60{
61}
62static inline int of_irq_parse_one(struct device_node *device, int index,
63 struct of_phandle_args *out_irq)
64{
65 return -EINVAL;
66}
67static inline int of_irq_count(struct device_node *dev)
68{
69 return 0;
70}
71static inline int of_irq_get(struct device_node *dev, int index)
72{
73 return 0;
74}
75static inline int of_irq_get_byname(struct device_node *dev, const char *name)
76{
77 return 0;
78}
79static inline int of_irq_to_resource_table(struct device_node *dev,
80 struct resource *res, int nr_irqs)
81{
82 return 0;
83}
84static inline void *of_irq_find_parent(struct device_node *child)
85{
86 return NULL;
87}
88
89static inline struct irq_domain *of_msi_get_domain(struct device *dev,
90 struct device_node *np,
91 enum irq_domain_bus_token token)
92{
93 return NULL;
94}
95static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
96 u32 id, u32 bus_token)
97{
98 return NULL;
99}
100static inline void of_msi_configure(struct device *dev, struct device_node *np)
101{
102}
103static inline u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in)
104{
105 return id_in;
106}
107#endif
108
109#if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC)
110/*
111 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
112 * implements it differently. However, the prototype is the same for all,
113 * so declare it here regardless of the CONFIG_OF_IRQ setting.
114 */
115extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
116
117#else /* !CONFIG_OF && !CONFIG_SPARC */
118static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
119 int index)
120{
121 return 0;
122}
123#endif /* !CONFIG_OF */
124
125#endif /* __OF_IRQ_H */
126