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 static inline void of_pci_range_to_resource(struct of_pci_range *range, 27 struct device_node *np, 28 struct resource *res) 29 { 30 res->flags = range->flags; 31 res->start = range->cpu_addr; 32 res->end = range->cpu_addr + range->size - 1; 33 res->parent = res->child = res->sibling = NULL; 34 res->name = np->full_name; 35 } 36 37 /* Translate a DMA address from device space to CPU space */ 38 extern u64 of_translate_dma_address(struct device_node *dev, 39 const __be32 *in_addr); 40 41 #ifdef CONFIG_OF_ADDRESS 42 extern u64 of_translate_address(struct device_node *np, const __be32 *addr); 43 extern int of_address_to_resource(struct device_node *dev, int index, 44 struct resource *r); 45 extern struct device_node *of_find_matching_node_by_address( 46 struct device_node *from, 47 const struct of_device_id *matches, 48 u64 base_address); 49 extern void __iomem *of_iomap(struct device_node *device, int index); 50 51 /* Extract an address from a device, returns the region size and 52 * the address space flags too. The PCI version uses a BAR number 53 * instead of an absolute index 54 */ 55 extern const __be32 *of_get_address(struct device_node *dev, int index, 56 u64 *size, unsigned int *flags); 57 58 extern unsigned long pci_address_to_pio(phys_addr_t addr); 59 60 extern int of_pci_range_parser_init(struct of_pci_range_parser *parser, 61 struct device_node *node); 62 extern struct of_pci_range *of_pci_range_parser_one( 63 struct of_pci_range_parser *parser, 64 struct of_pci_range *range); 65 extern int of_dma_get_range(struct device_node *np, u64 *dma_addr, 66 u64 *paddr, u64 *size); 67 extern bool of_dma_is_coherent(struct device_node *np); 68 #else /* CONFIG_OF_ADDRESS */ 69 static inline struct device_node *of_find_matching_node_by_address( 70 struct device_node *from, 71 const struct of_device_id *matches, 72 u64 base_address) 73 { 74 return NULL; 75 } 76 77 static inline const __be32 *of_get_address(struct device_node *dev, int index, 78 u64 *size, unsigned int *flags) 79 { 80 return NULL; 81 } 82 83 static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser, 84 struct device_node *node) 85 { 86 return -1; 87 } 88 89 static inline struct of_pci_range *of_pci_range_parser_one( 90 struct of_pci_range_parser *parser, 91 struct of_pci_range *range) 92 { 93 return NULL; 94 } 95 96 static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr, 97 u64 *paddr, u64 *size) 98 { 99 return -ENODEV; 100 } 101 102 static inline bool of_dma_is_coherent(struct device_node *np) 103 { 104 return false; 105 } 106 #endif /* CONFIG_OF_ADDRESS */ 107 108 #ifdef CONFIG_OF 109 extern int of_address_to_resource(struct device_node *dev, int index, 110 struct resource *r); 111 void __iomem *of_iomap(struct device_node *node, int index); 112 #else 113 static inline int of_address_to_resource(struct device_node *dev, int index, 114 struct resource *r) 115 { 116 return -EINVAL; 117 } 118 119 static inline void __iomem *of_iomap(struct device_node *device, int index) 120 { 121 return NULL; 122 } 123 #endif 124 125 #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI) 126 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, 127 u64 *size, unsigned int *flags); 128 extern int of_pci_address_to_resource(struct device_node *dev, int bar, 129 struct resource *r); 130 #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */ 131 static inline int of_pci_address_to_resource(struct device_node *dev, int bar, 132 struct resource *r) 133 { 134 return -ENOSYS; 135 } 136 137 static inline const __be32 *of_get_pci_address(struct device_node *dev, 138 int bar_no, u64 *size, unsigned int *flags) 139 { 140 return NULL; 141 } 142 #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */ 143 144 #endif /* __OF_ADDRESS_H */ 145 146