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 int of_address_to_resource(struct device_node *dev, int index,
44 struct resource *r);
45extern struct device_node *of_find_matching_node_by_address(
46 struct device_node *from,
47 const struct of_device_id *matches,
48 u64 base_address);
49extern void __iomem *of_iomap(struct device_node *device, int index);
50
51/* Extract an address from a device, returns the region size and
52 * the address space flags too. The PCI version uses a BAR number
53 * instead of an absolute index
54 */
55extern const __be32 *of_get_address(struct device_node *dev, int index,
56 u64 *size, unsigned int *flags);
57
58extern unsigned long pci_address_to_pio(phys_addr_t addr);
59
60extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
61 struct device_node *node);
62extern struct of_pci_range *of_pci_range_parser_one(
63 struct of_pci_range_parser *parser,
64 struct of_pci_range *range);
65extern int of_dma_get_range(struct device_node *np, u64 *dma_addr,
66 u64 *paddr, u64 *size);
67extern bool of_dma_is_coherent(struct device_node *np);
68#else /* CONFIG_OF_ADDRESS */
69static inline struct device_node *of_find_matching_node_by_address(
70 struct device_node *from,
71 const struct of_device_id *matches,
72 u64 base_address)
73{
74 return NULL;
75}
76
77static inline const __be32 *of_get_address(struct device_node *dev, int index,
78 u64 *size, unsigned int *flags)
79{
80 return NULL;
81}
82
83static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
84 struct device_node *node)
85{
86 return -1;
87}
88
89static inline struct of_pci_range *of_pci_range_parser_one(
90 struct of_pci_range_parser *parser,
91 struct of_pci_range *range)
92{
93 return NULL;
94}
95
96static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr,
97 u64 *paddr, u64 *size)
98{
99 return -ENODEV;
100}
101
102static inline bool of_dma_is_coherent(struct device_node *np)
103{
104 return false;
105}
106#endif /* CONFIG_OF_ADDRESS */
107
108#ifdef CONFIG_OF
109extern int of_address_to_resource(struct device_node *dev, int index,
110 struct resource *r);
111void __iomem *of_iomap(struct device_node *node, int index);
112#else
113static inline int of_address_to_resource(struct device_node *dev, int index,
114 struct resource *r)
115{
116 return -EINVAL;
117}
118
119static inline void __iomem *of_iomap(struct device_node *device, int index)
120{
121 return NULL;
122}
123#endif
124
125#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
126extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
127 u64 *size, unsigned int *flags);
128extern int of_pci_address_to_resource(struct device_node *dev, int bar,
129 struct resource *r);
130#else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
131static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
132 struct resource *r)
133{
134 return -ENOSYS;
135}
136
137static inline const __be32 *of_get_pci_address(struct device_node *dev,
138 int bar_no, u64 *size, unsigned int *flags)
139{
140 return NULL;
141}
142#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
143
144#endif /* __OF_ADDRESS_H */
145