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