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 bool of_can_translate_address(struct device_node *dev);
  10 extern int of_address_to_resource(struct device_node *dev, int index,
  11                                   struct resource *r);
  12 extern struct device_node *of_find_matching_node_by_address(
  13                                         struct device_node *from,
  14                                         const struct of_device_id *matches,
  15                                         u64 base_address);
  16 extern void __iomem *of_iomap(struct device_node *device, int index);
  17
  18 /* Extract an address from a device, returns the region size and
  19  * the address space flags too. The PCI version uses a BAR number
  20  * instead of an absolute index
  21  */
  22 extern const u32 *of_get_address(struct device_node *dev, int index,
  23                            u64 *size, unsigned int *flags);
  24
  25 #ifndef pci_address_to_pio
  26 static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
  27 #define pci_address_to_pio pci_address_to_pio
  28 #endif
  29
  30 #else /* CONFIG_OF_ADDRESS */
  31 static inline int of_address_to_resource(struct device_node *dev, int index,
  32                                          struct resource *r)
  33 {
  34         return -EINVAL;
  35 }
  36 static inline struct device_node *of_find_matching_node_by_address(
  37                                         struct device_node *from,
  38                                         const struct of_device_id *matches,
  39                                         u64 base_address)
  40 {
  41         return NULL;
  42 }
  43 static inline void __iomem *of_iomap(struct device_node *device, int index)
  44 {
  45         return NULL;
  46 }
  47 static inline const u32 *of_get_address(struct device_node *dev, int index,
  48                                         u64 *size, unsigned int *flags)
  49 {
  50         return NULL;
  51 }
  52 #endif /* CONFIG_OF_ADDRESS */
  53
  54
  55 #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
  56 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
  57                                u64 *size, unsigned int *flags);
  58 extern int of_pci_address_to_resource(struct device_node *dev, int bar,
  59                                       struct resource *r);
  60 #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
  61 static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
  62                                              struct resource *r)
  63 {
  64         return -ENOSYS;
  65 }
  66
  67 static inline const __be32 *of_get_pci_address(struct device_node *dev,
  68                 int bar_no, u64 *size, unsigned int *flags)
  69 {
  70         return NULL;
  71 }
  72 #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
  73
  74 #endif /* __OF_ADDRESS_H */
  75