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 static inline struct device_node *of_find_matching_node_by_address( 61 struct device_node *from, 62 const struct of_device_id *matches, 63 u64 base_address) 64 { 65 return NULL; 66 } 67 68 static inline const __be32 *of_get_address(struct device_node *dev, int index, 69 u64 *size, unsigned int *flags) 70 { 71 return NULL; 72 } 73 74 static inline phys_addr_t pci_pio_to_address(unsigned long pio) 75 { 76 return 0; 77 } 78 79 static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser, 80 struct device_node *node) 81 { 82 return -1; 83 } 84 85 static inline struct of_pci_range *of_pci_range_parser_one( 86 struct of_pci_range_parser *parser, 87 struct of_pci_range *range) 88 { 89 return NULL; 90 } 91 92 static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr, 93 u64 *paddr, u64 *size) 94 { 95 return -ENODEV; 96 } 97 98 static inline bool of_dma_is_coherent(struct device_node *np) 99 { 100 return false; 101 } 102 #endif /* CONFIG_OF_ADDRESS */ 103 104 #ifdef CONFIG_OF 105 extern int of_address_to_resource(struct device_node *dev, int index, 106 struct resource *r); 107 void __iomem *of_iomap(struct device_node *node, int index); 108 void __iomem *of_io_request_and_map(struct device_node *device, 109 int index, const char *name); 110 #else 111 112 #include <linux/io.h> 113 114 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 } 124 125 static inline void __iomem *of_io_request_and_map(struct device_node *device, 126 int index, const char *name) 127 { 128 return IOMEM_ERR_PTR(-EINVAL); 129 } 130 #endif 131 132 #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI) 133 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, 134 u64 *size, unsigned int *flags); 135 extern int of_pci_address_to_resource(struct device_node *dev, int bar, 136 struct resource *r); 137 extern int of_pci_range_to_resource(struct of_pci_range *range, 138 struct device_node *np, 139 struct resource *res); 140 #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */ 141 static inline int of_pci_address_to_resource(struct device_node *dev, int bar, 142 struct resource *r) 143 { 144 return -ENOSYS; 145 } 146 147 static inline const __be32 *of_get_pci_address(struct device_node *dev, 148 int bar_no, u64 *size, unsigned int *flags) 149 { 150 return NULL; 151 } 152 static inline int of_pci_range_to_resource(struct of_pci_range *range, 153 struct device_node *np, 154 struct resource *res) 155 { 156 return -ENOSYS; 157 } 158 #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */ 159 160 #endif /* __OF_ADDRESS_H */ 161 162