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 7 struct 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 15 struct 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 */ 27 extern u64 of_translate_dma_address(struct device_node *dev, 28 const __be32 *in_addr); 29 30 #ifdef CONFIG_OF_ADDRESS 31 extern u64 of_translate_address(struct device_node *np, const __be32 *addr); 32 extern int of_address_to_resource(struct device_node *dev, int index, 33 struct resource *r); 34 extern 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); 38 extern 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 */ 44 extern const __be32 *of_get_address(struct device_node *dev, int index, 45 u64 *size, unsigned int *flags); 46 47 extern int pci_register_io_range(phys_addr_t addr, resource_size_t size); 48 extern unsigned long pci_address_to_pio(phys_addr_t addr); 49 extern phys_addr_t pci_pio_to_address(unsigned long pio); 50 51 extern int of_pci_range_parser_init(struct of_pci_range_parser *parser, 52 struct device_node *node); 53 extern struct of_pci_range *of_pci_range_parser_one( 54 struct of_pci_range_parser *parser, 55 struct of_pci_range *range); 56 extern int of_dma_get_range(struct device_node *np, u64 *dma_addr, 57 u64 *paddr, u64 *size); 58 extern bool of_dma_is_coherent(struct device_node *np); 59 #else /* CONFIG_OF_ADDRESS */ 60 61 static inline u64 of_translate_address(struct device_node *np, 62 const __be32 *addr) 63 { 64 return OF_BAD_ADDR; 65 } 66 67 static inline struct device_node *of_find_matching_node_by_address( 68 struct device_node *from, 69 const struct of_device_id *matches, 70 u64 base_address) 71 { 72 return NULL; 73 } 74 75 static inline const __be32 *of_get_address(struct device_node *dev, int index, 76 u64 *size, unsigned int *flags) 77 { 78 return NULL; 79 } 80 81 static inline phys_addr_t pci_pio_to_address(unsigned long pio) 82 { 83 return 0; 84 } 85 86 static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser, 87 struct device_node *node) 88 { 89 return -1; 90 } 91 92 static inline struct of_pci_range *of_pci_range_parser_one( 93 struct of_pci_range_parser *parser, 94 struct of_pci_range *range) 95 { 96 return NULL; 97 } 98 99 static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr, 100 u64 *paddr, u64 *size) 101 { 102 return -ENODEV; 103 } 104 105 static inline bool of_dma_is_coherent(struct device_node *np) 106 { 107 return false; 108 } 109 #endif /* CONFIG_OF_ADDRESS */ 110 111 #ifdef CONFIG_OF 112 extern int of_address_to_resource(struct device_node *dev, int index, 113 struct resource *r); 114 void __iomem *of_iomap(struct device_node *node, int index); 115 void __iomem *of_io_request_and_map(struct device_node *device, 116 int index, const char *name); 117 #else 118 119 #include <linux/io.h> 120 121 static inline int of_address_to_resource(struct device_node *dev, int index, 122 struct resource *r) 123 { 124 return -EINVAL; 125 } 126 127 static inline void __iomem *of_iomap(struct device_node *device, int index) 128 { 129 return NULL; 130 } 131 132 static inline void __iomem *of_io_request_and_map(struct device_node *device, 133 int index, const char *name) 134 { 135 return IOMEM_ERR_PTR(-EINVAL); 136 } 137 #endif 138 139 #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI) 140 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, 141 u64 *size, unsigned int *flags); 142 extern int of_pci_address_to_resource(struct device_node *dev, int bar, 143 struct resource *r); 144 extern int of_pci_range_to_resource(struct of_pci_range *range, 145 struct device_node *np, 146 struct resource *res); 147 #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */ 148 static inline int of_pci_address_to_resource(struct device_node *dev, int bar, 149 struct resource *r) 150 { 151 return -ENOSYS; 152 } 153 154 static inline const __be32 *of_get_pci_address(struct device_node *dev, 155 int bar_no, u64 *size, unsigned int *flags) 156 { 157 return NULL; 158 } 159 static inline int of_pci_range_to_resource(struct of_pci_range *range, 160 struct device_node *np, 161 struct resource *res) 162 { 163 return -ENOSYS; 164 } 165 #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */ 166 167 #endif /* __OF_ADDRESS_H */ 168 169