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 #ifdef CONFIG_OF_ADDRESS
   8 extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
   9 extern int of_address_to_resource(struct device_node *dev, int index,
  10                                   struct resource *r);
  11 extern struct device_node *of_find_matching_node_by_address(
  12                                         struct device_node *from,
  13                                         const struct of_device_id *matches,
  14                                         u64 base_address);
  15 extern void __iomem *of_iomap(struct device_node *device, int index);
  16
  17 /* Extract an address from a device, returns the region size and
  18  * the address space flags too. The PCI version uses a BAR number
  19  * instead of an absolute index
  20  */
  21 extern const u32 *of_get_address(struct device_node *dev, int index,
  22                            u64 *size, unsigned int *flags);
  23
  24 #ifndef pci_address_to_pio
  25 static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
  26 #define pci_address_to_pio pci_address_to_pio
  27 #endif
  28
  29 #else /* CONFIG_OF_ADDRESS */
  30 static inline int of_address_to_resource(struct device_node *dev, int index,
  31                                          struct resource *r)
  32 {
  33         return -EINVAL;
  34 }
  35 static inline 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 {
  40         return NULL;
  41 }
  42 static inline void __iomem *of_iomap(struct device_node *device, int index)
  43 {
  44         return NULL;
  45 }
  46 static inline const u32 *of_get_address(struct device_node *dev, int index,
  47                                         u64 *size, unsigned int *flags)
  48 {
  49         return NULL;
  50 }
  51 #endif /* CONFIG_OF_ADDRESS */
  52
  53
  54 #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
  55 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
  56                                u64 *size, unsigned int *flags);
  57 extern int of_pci_address_to_resource(struct device_node *dev, int bar,
  58                                       struct resource *r);
  59 #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
  60 static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
  61                                              struct resource *r)
  62 {
  63         return -ENOSYS;
  64 }
  65
  66 static inline const __be32 *of_get_pci_address(struct device_node *dev,
  67                 int bar_no, u64 *size, unsigned int *flags)
  68 {
  69         return NULL;
  70 }
  71 #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
  72
  73 #endif /* __OF_ADDRESS_H */
  74