LXR linux/include/linux/of

   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#include <linux/io.h>
   7
   8struct of_pci_range_parser {
   9        struct device_node *node;
  10        const __be32 *range;
  11        const __be32 *end;
  12        int np;
  13        int pna;
  14};
  15
  16struct of_pci_range {
  17        u32 pci_space;
  18        u64 pci_addr;
  19        u64 cpu_addr;
  20        u64 size;
  21        u32 flags;
  22};
  23
  24#define for_each_of_pci_range(parser, range) \
  25        for (; of_pci_range_parser_one(parser, range);)
  26
  27/* Translate a DMA address from device space to CPU space */
  28extern u64 of_translate_dma_address(struct device_node *dev,
  29                                    const __be32 *in_addr);
  30
  31#ifdef CONFIG_OF_ADDRESS
  32extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
  33extern int of_address_to_resource(struct device_node *dev, int index,
  34                                  struct resource *r);
  35extern 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);
  39extern void __iomem *of_iomap(struct device_node *device, int index);
  40void __iomem *of_io_request_and_map(struct device_node *device,
  41                                    int index, const char *name);
  42
  43/* Extract an address from a device, returns the region size and
  44 * the address space flags too. The PCI version uses a BAR number
  45 * instead of an absolute index
  46 */
  47extern const __be32 *of_get_address(struct device_node *dev, int index,
  48                           u64 *size, unsigned int *flags);
  49
  50extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
  51                        struct device_node *node);
  52extern struct of_pci_range *of_pci_range_parser_one(
  53                                        struct of_pci_range_parser *parser,
  54                                        struct of_pci_range *range);
  55extern int of_dma_get_range(struct device_node *np, u64 *dma_addr,
  56                                u64 *paddr, u64 *size);
  57extern bool of_dma_is_coherent(struct device_node *np);
  58#else /* CONFIG_OF_ADDRESS */
  59static inline void __iomem *of_io_request_and_map(struct device_node *device,
  60                                                  int index, const char *name)
  61{
  62        return IOMEM_ERR_PTR(-EINVAL);
  63}
  64
  65static inline u64 of_translate_address(struct device_node *np,
  66                                       const __be32 *addr)
  67{
  68        return OF_BAD_ADDR;
  69}
  70
  71static inline struct device_node *of_find_matching_node_by_address(
  72                                        struct device_node *from,
  73                                        const struct of_device_id *matches,
  74                                        u64 base_address)
  75{
  76        return NULL;
  77}
  78
  79static inline const __be32 *of_get_address(struct device_node *dev, int index,
  80                                        u64 *size, unsigned int *flags)
  81{
  82        return NULL;
  83}
  84
  85static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
  86                        struct device_node *node)
  87{
  88        return -1;
  89}
  90
  91static inline struct of_pci_range *of_pci_range_parser_one(
  92                                        struct of_pci_range_parser *parser,
  93                                        struct of_pci_range *range)
  94{
  95        return NULL;
  96}
  97
  98static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr,
  99                                u64 *paddr, u64 *size)
 100{
 101        return -ENODEV;
 102}
 103
 104static inline bool of_dma_is_coherent(struct device_node *np)
 105{
 106        return false;
 107}
 108#endif /* CONFIG_OF_ADDRESS */
 109
 110#ifdef CONFIG_OF
 111extern int of_address_to_resource(struct device_node *dev, int index,
 112                                  struct resource *r);
 113void __iomem *of_iomap(struct device_node *node, int index);
 114#else
 115static inline int of_address_to_resource(struct device_node *dev, int index,
 116                                         struct resource *r)
 117{
 118        return -EINVAL;
 119}
 120
 121static inline void __iomem *of_iomap(struct device_node *device, int index)
 122{
 123        return NULL;
 124}
 125#endif
 126
 127#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
 128extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
 129                               u64 *size, unsigned int *flags);
 130extern int of_pci_address_to_resource(struct device_node *dev, int bar,
 131                                      struct resource *r);
 132extern int of_pci_range_to_resource(struct of_pci_range *range,
 133                                    struct device_node *np,
 134                                    struct resource *res);
 135#else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
 136static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
 137                                             struct resource *r)
 138{
 139        return -ENOSYS;
 140}
 141
 142static inline const __be32 *of_get_pci_address(struct device_node *dev,
 143                int bar_no, u64 *size, unsigned int *flags)
 144{
 145        return NULL;
 146}
 147static inline int of_pci_range_to_resource(struct of_pci_range *range,
 148                                           struct device_node *np,
 149                                           struct resource *res)
 150{
 151        return -ENOSYS;
 152}
 153#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
 154
 155#endif /* __OF_ADDRESS_H */
 156
 157