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 __be32 *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 #ifndef of_address_to_resource
  32 static inline int of_address_to_resource(struct device_node *dev, int index,
  33                                          struct resource *r)
  34 {
  35         return -EINVAL;
  36 }
  37 #endif
  38 static inline struct device_node *of_find_matching_node_by_address(
  39                                         struct device_node *from,
  40                                         const struct of_device_id *matches,
  41                                         u64 base_address)
  42 {
  43         return NULL;
  44 }
  45 #ifndef of_iomap
  46 static inline void __iomem *of_iomap(struct device_node *device, int index)
  47 {
  48         return NULL;
  49 }
  50 #endif
  51 static inline const __be32 *of_get_address(struct device_node *dev, int index,
  52                                         u64 *size, unsigned int *flags)
  53 {
  54         return NULL;
  55 }
  56 #endif /* CONFIG_OF_ADDRESS */
  57
  58
  59 #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
  60 extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
  61                                u64 *size, unsigned int *flags);
  62 extern int of_pci_address_to_resource(struct device_node *dev, int bar,
  63                                       struct resource *r);
  64 #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
  65 static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
  66                                              struct resource *r)
  67 {
  68         return -ENOSYS;
  69 }
  70
  71 static inline const __be32 *of_get_pci_address(struct device_node *dev,
  72                 int bar_no, u64 *size, unsigned int *flags)
  73 {
  74         return NULL;
  75 }
  76 #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
  77
  78 #endif /* __OF_ADDRESS_H */
  79