1 /* SPDX-License-Identifier: GPL-2.0 */
4 #include <linux/ioport.h>
5 #include <linux/errno.h>
11 struct of_pci_range_parser {
12 struct device_node *node;
21 #define of_range_parser of_pci_range_parser
32 #define of_range of_pci_range
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
38 /* Translate a DMA address from device space to CPU space */
39 extern u64 of_translate_dma_address(struct device_node *dev,
40 const __be32 *in_addr);
41 extern const __be32 *of_translate_dma_region(struct device_node *dev, const __be32 *addr,
42 phys_addr_t *start, size_t *length);
44 #ifdef CONFIG_OF_ADDRESS
45 extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
46 extern int of_address_to_resource(struct device_node *dev, int index,
48 extern void __iomem *of_iomap(struct device_node *device, int index);
49 void __iomem *of_io_request_and_map(struct device_node *device,
50 int index, const char *name);
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
56 extern const __be32 *__of_get_address(struct device_node *dev, int index, int bar_no,
57 u64 *size, unsigned int *flags);
59 extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
60 struct device_node *node);
61 extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,
62 struct device_node *node);
63 extern struct of_pci_range *of_pci_range_parser_one(
64 struct of_pci_range_parser *parser,
65 struct of_pci_range *range);
66 extern int of_pci_address_to_resource(struct device_node *dev, int bar,
68 extern int of_pci_range_to_resource(struct of_pci_range *range,
69 struct device_node *np,
70 struct resource *res);
71 extern bool of_dma_is_coherent(struct device_node *np);
72 #else /* CONFIG_OF_ADDRESS */
73 static inline void __iomem *of_io_request_and_map(struct device_node *device,
74 int index, const char *name)
76 return IOMEM_ERR_PTR(-EINVAL);
79 static inline u64 of_translate_address(struct device_node *np,
85 static inline const __be32 *__of_get_address(struct device_node *dev, int index, int bar_no,
86 u64 *size, unsigned int *flags)
91 static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
92 struct device_node *node)
97 static inline int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,
98 struct device_node *node)
103 static inline struct of_pci_range *of_pci_range_parser_one(
104 struct of_pci_range_parser *parser,
105 struct of_pci_range *range)
110 static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
116 static inline int of_pci_range_to_resource(struct of_pci_range *range,
117 struct device_node *np,
118 struct resource *res)
123 static inline bool of_dma_is_coherent(struct device_node *np)
127 #endif /* CONFIG_OF_ADDRESS */
130 extern int of_address_to_resource(struct device_node *dev, int index,
132 void __iomem *of_iomap(struct device_node *node, int index);
134 static inline int of_address_to_resource(struct device_node *dev, int index,
140 static inline void __iomem *of_iomap(struct device_node *device, int index)
145 #define of_range_parser_init of_pci_range_parser_init
147 static inline const __be32 *of_get_address(struct device_node *dev, int index,
148 u64 *size, unsigned int *flags)
150 return __of_get_address(dev, index, -1, size, flags);
153 static inline const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
154 u64 *size, unsigned int *flags)
156 return __of_get_address(dev, -1, bar_no, size, flags);
159 static inline int of_address_count(struct device_node *np)
164 while (of_address_to_resource(np, count, &res) == 0)
170 #endif /* __OF_ADDRESS_H */