Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __OF_ADDRESS_H
3#define __OF_ADDRESS_H
4#include <linux/ioport.h>
5#include <linux/errno.h>
6#include <linux/of.h>
7#include <linux/io.h>
8
9struct of_bus;
10
11struct of_pci_range_parser {
12 struct device_node *node;
13 struct of_bus *bus;
14 const __be32 *range;
15 const __be32 *end;
16 int na;
17 int ns;
18 int pna;
19 bool dma;
20};
21#define of_range_parser of_pci_range_parser
22
23struct of_pci_range {
24 union {
25 u64 pci_addr;
26 u64 bus_addr;
27 };
28 u64 cpu_addr;
29 u64 size;
30 u32 flags;
31};
32#define of_range of_pci_range
33
34#define for_each_of_pci_range(parser, range) \
35 for (; of_pci_range_parser_one(parser, range);)
36#define for_each_of_range for_each_of_pci_range
37
38/* Translate a DMA address from device space to CPU space */
39extern u64 of_translate_dma_address(struct device_node *dev,
40 const __be32 *in_addr);
41
42#ifdef CONFIG_OF_ADDRESS
43extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
44extern int of_address_to_resource(struct device_node *dev, int index,
45 struct resource *r);
46extern void __iomem *of_iomap(struct device_node *device, int index);
47void __iomem *of_io_request_and_map(struct device_node *device,
48 int index, const char *name);
49
50/* Extract an address from a device, returns the region size and
51 * the address space flags too. The PCI version uses a BAR number
52 * instead of an absolute index
53 */
54extern const __be32 *of_get_address(struct device_node *dev, int index,
55 u64 *size, unsigned int *flags);
56
57extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
58 struct device_node *node);
59extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,
60 struct device_node *node);
61extern struct of_pci_range *of_pci_range_parser_one(
62 struct of_pci_range_parser *parser,
63 struct of_pci_range *range);
64extern bool of_dma_is_coherent(struct device_node *np);
65#else /* CONFIG_OF_ADDRESS */
66static inline void __iomem *of_io_request_and_map(struct device_node *device,
67 int index, const char *name)
68{
69 return IOMEM_ERR_PTR(-EINVAL);
70}
71
72static inline u64 of_translate_address(struct device_node *np,
73 const __be32 *addr)
74{
75 return OF_BAD_ADDR;
76}
77
78static inline const __be32 *of_get_address(struct device_node *dev, int index,
79 u64 *size, unsigned int *flags)
80{
81 return NULL;
82}
83
84static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
85 struct device_node *node)
86{
87 return -ENOSYS;
88}
89
90static inline int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,
91 struct device_node *node)
92{
93 return -ENOSYS;
94}
95
96static inline struct of_pci_range *of_pci_range_parser_one(
97 struct of_pci_range_parser *parser,
98 struct of_pci_range *range)
99{
100 return NULL;
101}
102
103static inline bool of_dma_is_coherent(struct device_node *np)
104{
105 return false;
106}
107#endif /* CONFIG_OF_ADDRESS */
108
109#ifdef CONFIG_OF
110extern int of_address_to_resource(struct device_node *dev, int index,
111 struct resource *r);
112void __iomem *of_iomap(struct device_node *node, int index);
113#else
114static inline int of_address_to_resource(struct device_node *dev, int index,
115 struct resource *r)
116{
117 return -EINVAL;
118}
119
120static inline void __iomem *of_iomap(struct device_node *device, int index)
121{
122 return NULL;
123}
124#endif
125#define of_range_parser_init of_pci_range_parser_init
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 */