Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef __OF_ADDRESS_H
2#define __OF_ADDRESS_H
3#include <linux/ioport.h>
4#include <linux/errno.h>
5#include <linux/of.h>
6#include <linux/io.h>
7
8struct of_pci_range_parser {
9 struct device_node *node;
10 const __be32 *range;
11 const __be32 *end;
12 int np;
13 int pna;
14};
15
16struct of_pci_range {
17 u32 pci_space;
18 u64 pci_addr;
19 u64 cpu_addr;
20 u64 size;
21 u32 flags;
22};
23
24#define for_each_of_pci_range(parser, range) \
25 for (; of_pci_range_parser_one(parser, range);)
26
27/* Translate a DMA address from device space to CPU space */
28extern u64 of_translate_dma_address(struct device_node *dev,
29 const __be32 *in_addr);
30
31#ifdef CONFIG_OF_ADDRESS
32extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
33extern int of_address_to_resource(struct device_node *dev, int index,
34 struct resource *r);
35extern struct device_node *of_find_matching_node_by_address(
36 struct device_node *from,
37 const struct of_device_id *matches,
38 u64 base_address);
39extern void __iomem *of_iomap(struct device_node *device, int index);
40void __iomem *of_io_request_and_map(struct device_node *device,
41 int index, const char *name);
42
43/* Extract an address from a device, returns the region size and
44 * the address space flags too. The PCI version uses a BAR number
45 * instead of an absolute index
46 */
47extern const __be32 *of_get_address(struct device_node *dev, int index,
48 u64 *size, unsigned int *flags);
49
50extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
51 struct device_node *node);
52extern struct of_pci_range *of_pci_range_parser_one(
53 struct of_pci_range_parser *parser,
54 struct of_pci_range *range);
55extern int of_dma_get_range(struct device_node *np, u64 *dma_addr,
56 u64 *paddr, u64 *size);
57extern bool of_dma_is_coherent(struct device_node *np);
58#else /* CONFIG_OF_ADDRESS */
59static inline void __iomem *of_io_request_and_map(struct device_node *device,
60 int index, const char *name)
61{
62 return IOMEM_ERR_PTR(-EINVAL);
63}
64
65static inline u64 of_translate_address(struct device_node *np,
66 const __be32 *addr)
67{
68 return OF_BAD_ADDR;
69}
70
71static inline struct device_node *of_find_matching_node_by_address(
72 struct device_node *from,
73 const struct of_device_id *matches,
74 u64 base_address)
75{
76 return NULL;
77}
78
79static inline const __be32 *of_get_address(struct device_node *dev, int index,
80 u64 *size, unsigned int *flags)
81{
82 return NULL;
83}
84
85static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
86 struct device_node *node)
87{
88 return -1;
89}
90
91static inline struct of_pci_range *of_pci_range_parser_one(
92 struct of_pci_range_parser *parser,
93 struct of_pci_range *range)
94{
95 return NULL;
96}
97
98static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr,
99 u64 *paddr, u64 *size)
100{
101 return -ENODEV;
102}
103
104static inline bool of_dma_is_coherent(struct device_node *np)
105{
106 return false;
107}
108#endif /* CONFIG_OF_ADDRESS */
109
110#ifdef CONFIG_OF
111extern int of_address_to_resource(struct device_node *dev, int index,
112 struct resource *r);
113void __iomem *of_iomap(struct device_node *node, int index);
114#else
115static inline int of_address_to_resource(struct device_node *dev, int index,
116 struct resource *r)
117{
118 return -EINVAL;
119}
120
121static inline void __iomem *of_iomap(struct device_node *device, int index)
122{
123 return NULL;
124}
125#endif
126
127#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
128extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
129 u64 *size, unsigned int *flags);
130extern int of_pci_address_to_resource(struct device_node *dev, int bar,
131 struct resource *r);
132extern int of_pci_range_to_resource(struct of_pci_range *range,
133 struct device_node *np,
134 struct resource *res);
135#else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
136static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
137 struct resource *r)
138{
139 return -ENOSYS;
140}
141
142static inline const __be32 *of_get_pci_address(struct device_node *dev,
143 int bar_no, u64 *size, unsigned int *flags)
144{
145 return NULL;
146}
147static inline int of_pci_range_to_resource(struct of_pci_range *range,
148 struct device_node *np,
149 struct resource *res)
150{
151 return -ENOSYS;
152}
153#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
154
155#endif /* __OF_ADDRESS_H */
156