1 /* SPDX-License-Identifier: GPL-2.0 */
4 #include <linux/ioport.h>
5 #include <linux/errno.h>
9 struct of_pci_range_parser {
10 struct device_node *node;
25 #define for_each_of_pci_range(parser, range) \
26 for (; of_pci_range_parser_one(parser, range);)
28 /* Translate a DMA address from device space to CPU space */
29 extern u64 of_translate_dma_address(struct device_node *dev,
30 const __be32 *in_addr);
32 #ifdef CONFIG_OF_ADDRESS
33 extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
34 extern int of_address_to_resource(struct device_node *dev, int index,
36 extern struct device_node *of_find_matching_node_by_address(
37 struct device_node *from,
38 const struct of_device_id *matches,
40 extern void __iomem *of_iomap(struct device_node *device, int index);
41 void __iomem *of_io_request_and_map(struct device_node *device,
42 int index, const char *name);
44 /* Extract an address from a device, returns the region size and
45 * the address space flags too. The PCI version uses a BAR number
46 * instead of an absolute index
48 extern const __be32 *of_get_address(struct device_node *dev, int index,
49 u64 *size, unsigned int *flags);
51 extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
52 struct device_node *node);
53 extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,
54 struct device_node *node);
55 extern struct of_pci_range *of_pci_range_parser_one(
56 struct of_pci_range_parser *parser,
57 struct of_pci_range *range);
58 extern int of_dma_get_range(struct device_node *np, u64 *dma_addr,
59 u64 *paddr, u64 *size);
60 extern bool of_dma_is_coherent(struct device_node *np);
61 #else /* CONFIG_OF_ADDRESS */
62 static inline void __iomem *of_io_request_and_map(struct device_node *device,
63 int index, const char *name)
65 return IOMEM_ERR_PTR(-EINVAL);
68 static inline u64 of_translate_address(struct device_node *np,
74 static inline struct device_node *of_find_matching_node_by_address(
75 struct device_node *from,
76 const struct of_device_id *matches,
82 static inline const __be32 *of_get_address(struct device_node *dev, int index,
83 u64 *size, unsigned int *flags)
88 static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
89 struct device_node *node)
94 static inline int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,
95 struct device_node *node)
100 static inline struct of_pci_range *of_pci_range_parser_one(
101 struct of_pci_range_parser *parser,
102 struct of_pci_range *range)
107 static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr,
108 u64 *paddr, u64 *size)
113 static inline bool of_dma_is_coherent(struct device_node *np)
117 #endif /* CONFIG_OF_ADDRESS */
120 extern int of_address_to_resource(struct device_node *dev, int index,
122 void __iomem *of_iomap(struct device_node *node, int index);
124 static inline int of_address_to_resource(struct device_node *dev, int index,
130 static inline void __iomem *of_iomap(struct device_node *device, int index)
136 #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
137 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
138 u64 *size, unsigned int *flags);
139 extern int of_pci_address_to_resource(struct device_node *dev, int bar,
141 extern int of_pci_range_to_resource(struct of_pci_range *range,
142 struct device_node *np,
143 struct resource *res);
144 #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
145 static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
151 static inline const __be32 *of_get_pci_address(struct device_node *dev,
152 int bar_no, u64 *size, unsigned int *flags)
156 static inline int of_pci_range_to_resource(struct of_pci_range *range,
157 struct device_node *np,
158 struct resource *res)
162 #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
164 #endif /* __OF_ADDRESS_H */