linux/include/linux/of_address.h
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   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
   8extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
   9extern bool of_can_translate_address(struct device_node *dev);
  10extern int of_address_to_resource(struct device_node *dev, int index,
  11                                  struct resource *r);
  12extern 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);
  16extern 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 */
  22extern const __be32 *of_get_address(struct device_node *dev, int index,
  23                           u64 *size, unsigned int *flags);
  24
  25#ifndef pci_address_to_pio
  26static 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
  32static inline int of_address_to_resource(struct device_node *dev, int index,
  33                                         struct resource *r)
  34{
  35        return -EINVAL;
  36}
  37#endif
  38static 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
  46static inline void __iomem *of_iomap(struct device_node *device, int index)
  47{
  48        return NULL;
  49}
  50#endif
  51static 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)
  60extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
  61                               u64 *size, unsigned int *flags);
  62extern int of_pci_address_to_resource(struct device_node *dev, int bar,
  63                                      struct resource *r);
  64#else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
  65static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
  66                                             struct resource *r)
  67{
  68        return -ENOSYS;
  69}
  70
  71static 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
  80
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