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
26/* Translate a DMA address from device space to CPU space */
27extern u64 of_translate_dma_address(struct device_node *dev,
28				    const __be32 *in_addr);
29
30#ifdef CONFIG_OF_ADDRESS
31extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
32extern int of_address_to_resource(struct device_node *dev, int index,
33				  struct resource *r);
34extern struct device_node *of_find_matching_node_by_address(
35					struct device_node *from,
36					const struct of_device_id *matches,
37					u64 base_address);
38extern void __iomem *of_iomap(struct device_node *device, int index);
39
40/* Extract an address from a device, returns the region size and
41 * the address space flags too. The PCI version uses a BAR number
42 * instead of an absolute index
43 */
44extern const __be32 *of_get_address(struct device_node *dev, int index,
45			   u64 *size, unsigned int *flags);
46
47extern int pci_register_io_range(phys_addr_t addr, resource_size_t size);
48extern unsigned long pci_address_to_pio(phys_addr_t addr);
49extern phys_addr_t pci_pio_to_address(unsigned long pio);
50
51extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
52			struct device_node *node);
53extern struct of_pci_range *of_pci_range_parser_one(
54					struct of_pci_range_parser *parser,
55					struct of_pci_range *range);
56extern int of_dma_get_range(struct device_node *np, u64 *dma_addr,
57				u64 *paddr, u64 *size);
58extern bool of_dma_is_coherent(struct device_node *np);
59#else /* CONFIG_OF_ADDRESS */
60static inline struct device_node *of_find_matching_node_by_address(
61					struct device_node *from,
62					const struct of_device_id *matches,
63					u64 base_address)
64{
65	return NULL;
66}
67
68static inline const __be32 *of_get_address(struct device_node *dev, int index,
69					u64 *size, unsigned int *flags)
70{
71	return NULL;
72}
73
74static inline phys_addr_t pci_pio_to_address(unsigned long pio)
75{
76	return 0;
77}
78
79static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
80			struct device_node *node)
81{
82	return -1;
83}
84
85static inline struct of_pci_range *of_pci_range_parser_one(
86					struct of_pci_range_parser *parser,
87					struct of_pci_range *range)
88{
89	return NULL;
90}
91
92static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr,
93				u64 *paddr, u64 *size)
94{
95	return -ENODEV;
96}
97
98static inline bool of_dma_is_coherent(struct device_node *np)
99{
100	return false;
101}
102#endif /* CONFIG_OF_ADDRESS */
103
104#ifdef CONFIG_OF
105extern int of_address_to_resource(struct device_node *dev, int index,
106				  struct resource *r);
107void __iomem *of_iomap(struct device_node *node, int index);
108void __iomem *of_io_request_and_map(struct device_node *device,
109					int index, const char *name);
110#else
111
112#include <linux/io.h>
113
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
125static inline void __iomem *of_io_request_and_map(struct device_node *device,
126					int index, const char *name)
127{
128	return IOMEM_ERR_PTR(-EINVAL);
129}
130#endif
131
132#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
133extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
134			       u64 *size, unsigned int *flags);
135extern int of_pci_address_to_resource(struct device_node *dev, int bar,
136				      struct resource *r);
137extern int of_pci_range_to_resource(struct of_pci_range *range,
138				    struct device_node *np,
139				    struct resource *res);
140#else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
141static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
142				             struct resource *r)
143{
144	return -ENOSYS;
145}
146
147static inline const __be32 *of_get_pci_address(struct device_node *dev,
148		int bar_no, u64 *size, unsigned int *flags)
149{
150	return NULL;
151}
152static inline int of_pci_range_to_resource(struct of_pci_range *range,
153					   struct device_node *np,
154					   struct resource *res)
155{
156	return -ENOSYS;
157}
158#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
159
160#endif /* __OF_ADDRESS_H */
161
162