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