include/linux/of_reserved_mem.h

   1 #ifndef __OF_RESERVED_MEM_H
   2 #define __OF_RESERVED_MEM_H
   3
   4 struct device;
   5 struct of_phandle_args;
   6 struct reserved_mem_ops;
   7
   8 struct reserved_mem {
   9         const char                      *name;
  10         unsigned long                   fdt_node;
  11         unsigned long                   phandle;
  12         const struct reserved_mem_ops   *ops;
  13         phys_addr_t                     base;
  14         phys_addr_t                     size;
  15         void                            *priv;
  16 };
  17
  18 struct reserved_mem_ops {
  19         int     (*device_init)(struct reserved_mem *rmem,
  20                                struct device *dev);
  21         void    (*device_release)(struct reserved_mem *rmem,
  22                                   struct device *dev);
  23 };
  24
  25 typedef int (*reservedmem_of_init_fn)(struct reserved_mem *rmem);
  26
  27 #define RESERVEDMEM_OF_DECLARE(name, compat, init)                      \
  28         _OF_DECLARE(reservedmem, name, compat, init, reservedmem_of_init_fn)
  29
  30 #ifdef CONFIG_OF_RESERVED_MEM
  31 int of_reserved_mem_device_init(struct device *dev);
  32 void of_reserved_mem_device_release(struct device *dev);
  33
  34 int early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
  35                                              phys_addr_t align,
  36                                              phys_addr_t start,
  37                                              phys_addr_t end,
  38                                              bool nomap,
  39                                              phys_addr_t *res_base);
  40
  41 void fdt_init_reserved_mem(void);
  42 void fdt_reserved_mem_save_node(unsigned long node, const char *uname,
  43                                phys_addr_t base, phys_addr_t size);
  44 #else
  45 static inline int of_reserved_mem_device_init(struct device *dev)
  46 {
  47         return -ENOSYS;
  48 }
  49 static inline void of_reserved_mem_device_release(struct device *pdev) { }
  50
  51 static inline void fdt_init_reserved_mem(void) { }
  52 static inline void fdt_reserved_mem_save_node(unsigned long node,
  53                 const char *uname, phys_addr_t base, phys_addr_t size) { }
  54 #endif
  55
  56 #endif /* __OF_RESERVED_MEM_H */