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 extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
   8 extern int of_address_to_resource(struct device_node *dev, int index,
   9                                   struct resource *r);
  10 extern struct device_node *of_find_matching_node_by_address(
  11                                         struct device_node *from,
  12                                         const struct of_device_id *matches,
  13                                         u64 base_address);
  14 extern void __iomem *of_iomap(struct device_node *device, int index);
  15
  16 /* Extract an address from a device, returns the region size and
  17  * the address space flags too. The PCI version uses a BAR number
  18  * instead of an absolute index
  19  */
  20 extern const u32 *of_get_address(struct device_node *dev, int index,
  21                            u64 *size, unsigned int *flags);
  22
  23 #ifndef pci_address_to_pio
  24 static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
  25 #define pci_address_to_pio pci_address_to_pio
  26 #endif
  27
  28 #ifdef CONFIG_PCI
  29 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
  30                                u64 *size, unsigned int *flags);
  31 extern int of_pci_address_to_resource(struct device_node *dev, int bar,
  32                                       struct resource *r);
  33 #else /* CONFIG_PCI */
  34 static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
  35                                              struct resource *r)
  36 {
  37         return -ENOSYS;
  38 }
  39
  40 static inline const __be32 *of_get_pci_address(struct device_node *dev,
  41                 int bar_no, u64 *size, unsigned int *flags)
  42 {
  43         return NULL;
  44 }
  45 #endif /* CONFIG_PCI */
  46
  47
  48 #endif /* __OF_ADDRESS_H */
  49