include/linux/of_address.h

   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 #ifdef CONFIG_OF_ADDRESS
  38 extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
  39 extern bool of_can_translate_address(struct device_node *dev);
  40 extern int of_address_to_resource(struct device_node *dev, int index,
  41                                   struct resource *r);
  42 extern struct device_node *of_find_matching_node_by_address(
  43                                         struct device_node *from,
  44                                         const struct of_device_id *matches,
  45                                         u64 base_address);
  46 extern void __iomem *of_iomap(struct device_node *device, int index);
  47
  48 /* Extract an address from a device, returns the region size and
  49  * the address space flags too. The PCI version uses a BAR number
  50  * instead of an absolute index
  51  */
  52 extern const __be32 *of_get_address(struct device_node *dev, int index,
  53                            u64 *size, unsigned int *flags);
  54
  55 #ifndef pci_address_to_pio
  56 static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
  57 #define pci_address_to_pio pci_address_to_pio
  58 #endif
  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 #else /* CONFIG_OF_ADDRESS */
  66 #ifndef of_address_to_resource
  67 static inline int of_address_to_resource(struct device_node *dev, int index,
  68                                          struct resource *r)
  69 {
  70         return -EINVAL;
  71 }
  72 #endif
  73 static inline struct device_node *of_find_matching_node_by_address(
  74                                         struct device_node *from,
  75                                         const struct of_device_id *matches,
  76                                         u64 base_address)
  77 {
  78         return NULL;
  79 }
  80 #ifndef of_iomap
  81 static inline void __iomem *of_iomap(struct device_node *device, int index)
  82 {
  83         return NULL;
  84 }
  85 #endif
  86 static inline const __be32 *of_get_address(struct device_node *dev, int index,
  87                                         u64 *size, unsigned int *flags)
  88 {
  89         return NULL;
  90 }
  91
  92 static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
  93                         struct device_node *node)
  94 {
  95         return -1;
  96 }
  97
  98 static inline struct of_pci_range *of_pci_range_parser_one(
  99                                         struct of_pci_range_parser *parser,
 100                                         struct of_pci_range *range)
 101 {
 102         return NULL;
 103 }
 104 #endif /* CONFIG_OF_ADDRESS */
 105
 106
 107 #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
 108 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
 109                                u64 *size, unsigned int *flags);
 110 extern int of_pci_address_to_resource(struct device_node *dev, int bar,
 111                                       struct resource *r);
 112 #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
 113 static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
 114                                              struct resource *r)
 115 {
 116         return -ENOSYS;
 117 }
 118
 119 static inline const __be32 *of_get_pci_address(struct device_node *dev,
 120                 int bar_no, u64 *size, unsigned int *flags)
 121 {
 122         return NULL;
 123 }
 124 #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
 125
 126 #endif /* __OF_ADDRESS_H */
 127