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 #include <linux/io.h> 7 8 struct of_pci_range_parser { 9 struct device_node *node; 10 const __be32 *range; 11 const __be32 *end; 12 int np; 13 int pna; 14 }; 15 16 struct of_pci_range { 17 u32 pci_space; 18 u64 pci_addr; 19 u64 cpu_addr; 20 u64 size; 21 u32 flags; 22 }; 23 24 #define for_each_of_pci_range(parser, range) \ 25 for (; of_pci_range_parser_one(parser, range);) 26 27 /* Translate a DMA address from device space to CPU space */ 28 extern u64 of_translate_dma_address(struct device_node *dev, 29 const __be32 *in_addr); 30 31 #ifdef CONFIG_OF_ADDRESS 32 extern u64 of_translate_address(struct device_node *np, const __be32 *addr); 33 extern int of_address_to_resource(struct device_node *dev, int index, 34 struct resource *r); 35 extern struct device_node *of_find_matching_node_by_address( 36 struct device_node *from, 37 const struct of_device_id *matches, 38 u64 base_address); 39 extern void __iomem *of_iomap(struct device_node *device, int index); 40 void __iomem *of_io_request_and_map(struct device_node *device, 41 int index, const char *name); 42 43 /* Extract an address from a device, returns the region size and 44 * the address space flags too. The PCI version uses a BAR number 45 * instead of an absolute index 46 */ 47 extern const __be32 *of_get_address(struct device_node *dev, int index, 48 u64 *size, unsigned int *flags); 49 50 extern int of_pci_range_parser_init(struct of_pci_range_parser *parser, 51 struct device_node *node); 52 extern struct of_pci_range *of_pci_range_parser_one( 53 struct of_pci_range_parser *parser, 54 struct of_pci_range *range); 55 extern int of_dma_get_range(struct device_node *np, u64 *dma_addr, 56 u64 *paddr, u64 *size); 57 extern bool of_dma_is_coherent(struct device_node *np); 58 #else /* CONFIG_OF_ADDRESS */ 59 static inline void __iomem *of_io_request_and_map(struct device_node *device, 60 int index, const char *name) 61 { 62 return IOMEM_ERR_PTR(-EINVAL); 63 } 64 65 static inline u64 of_translate_address(struct device_node *np, 66 const __be32 *addr) 67 { 68 return OF_BAD_ADDR; 69 } 70 71 static inline struct device_node *of_find_matching_node_by_address( 72 struct device_node *from, 73 const struct of_device_id *matches, 74 u64 base_address) 75 { 76 return NULL; 77 } 78 79 static inline const __be32 *of_get_address(struct device_node *dev, int index, 80 u64 *size, unsigned int *flags) 81 { 82 return NULL; 83 } 84 85 static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser, 86 struct device_node *node) 87 { 88 return -1; 89 } 90 91 static inline struct of_pci_range *of_pci_range_parser_one( 92 struct of_pci_range_parser *parser, 93 struct of_pci_range *range) 94 { 95 return NULL; 96 } 97 98 static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr, 99 u64 *paddr, u64 *size) 100 { 101 return -ENODEV; 102 } 103 104 static inline bool of_dma_is_coherent(struct device_node *np) 105 { 106 return false; 107 } 108 #endif /* CONFIG_OF_ADDRESS */ 109 110 #ifdef CONFIG_OF 111 extern int of_address_to_resource(struct device_node *dev, int index, 112 struct resource *r); 113 void __iomem *of_iomap(struct device_node *node, int index); 114 #else 115 static inline int of_address_to_resource(struct device_node *dev, int index, 116 struct resource *r) 117 { 118 return -EINVAL; 119 } 120 121 static inline void __iomem *of_iomap(struct device_node *device, int index) 122 { 123 return NULL; 124 } 125 #endif 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 */ 156 157