1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __OF_ADDRESS_H 3 #define __OF_ADDRESS_H 4 #include <linux/ioport.h> 5 #include <linux/errno.h> 6 #include <linux/of.h> 7 #include <linux/io.h> 8 9 struct of_bus; 10 11 struct of_pci_range_parser { 12 struct device_node *node; 13 struct of_bus *bus; 14 const __be32 *range; 15 const __be32 *end; 16 int na; 17 int ns; 18 int pna; 19 bool dma; 20 }; 21 #define of_range_parser of_pci_range_parser 22 23 struct of_pci_range { 24 union { 25 u64 pci_addr; 26 u64 bus_addr; 27 }; 28 u64 cpu_addr; 29 u64 size; 30 u32 flags; 31 }; 32 #define of_range of_pci_range 33 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 37 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 42 #ifdef CONFIG_OF_ADDRESS 43 extern u64 of_translate_address(struct device_node *np, const __be32 *addr); 44 extern int of_address_to_resource(struct device_node *dev, int index, 45 struct resource *r); 46 extern void __iomem *of_iomap(struct device_node *device, int index); 47 void __iomem *of_io_request_and_map(struct device_node *device, 48 int index, const char *name); 49 50 /* Extract an address from a device, returns the region size and 51 * the address space flags too. The PCI version uses a BAR number 52 * instead of an absolute index 53 */ 54 extern const __be32 *of_get_address(struct device_node *dev, int index, 55 u64 *size, unsigned int *flags); 56 57 extern int of_pci_range_parser_init(struct of_pci_range_parser *parser, 58 struct device_node *node); 59 extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser, 60 struct device_node *node); 61 extern struct of_pci_range *of_pci_range_parser_one( 62 struct of_pci_range_parser *parser, 63 struct of_pci_range *range); 64 extern bool of_dma_is_coherent(struct device_node *np); 65 #else /* CONFIG_OF_ADDRESS */ 66 static inline void __iomem *of_io_request_and_map(struct device_node *device, 67 int index, const char *name) 68 { 69 return IOMEM_ERR_PTR(-EINVAL); 70 } 71 72 static inline u64 of_translate_address(struct device_node *np, 73 const __be32 *addr) 74 { 75 return OF_BAD_ADDR; 76 } 77 78 static inline const __be32 *of_get_address(struct device_node *dev, int index, 79 u64 *size, unsigned int *flags) 80 { 81 return NULL; 82 } 83 84 static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser, 85 struct device_node *node) 86 { 87 return -ENOSYS; 88 } 89 90 static inline int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser, 91 struct device_node *node) 92 { 93 return -ENOSYS; 94 } 95 96 static inline struct of_pci_range *of_pci_range_parser_one( 97 struct of_pci_range_parser *parser, 98 struct of_pci_range *range) 99 { 100 return NULL; 101 } 102 103 static inline bool of_dma_is_coherent(struct device_node *np) 104 { 105 return false; 106 } 107 #endif /* CONFIG_OF_ADDRESS */ 108 109 #ifdef CONFIG_OF 110 extern int of_address_to_resource(struct device_node *dev, int index, 111 struct resource *r); 112 void __iomem *of_iomap(struct device_node *node, int index); 113 #else 114 static inline int of_address_to_resource(struct device_node *dev, int index, 115 struct resource *r) 116 { 117 return -EINVAL; 118 } 119 120 static inline void __iomem *of_iomap(struct device_node *device, int index) 121 { 122 return NULL; 123 } 124 #endif 125 #define of_range_parser_init of_pci_range_parser_init 126 127 #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI) 128 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, 129 u64 *size, unsigned int *flags); 130 extern int of_pci_address_to_resource(struct device_node *dev, int bar, 131 struct resource *r); 132 extern int of_pci_range_to_resource(struct of_pci_range *range, 133 struct device_node *np, 134 struct resource *res); 135 #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */ 136 static inline int of_pci_address_to_resource(struct device_node *dev, int bar, 137 struct resource *r) 138 { 139 return -ENOSYS; 140 } 141 142 static inline const __be32 *of_get_pci_address(struct device_node *dev, 143 int bar_no, u64 *size, unsigned int *flags) 144 { 145 return NULL; 146 } 147 static inline int of_pci_range_to_resource(struct of_pci_range *range, 148 struct device_node *np, 149 struct resource *res) 150 { 151 return -ENOSYS; 152 } 153 #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */ 154 155 #endif /* __OF_ADDRESS_H */ 156