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