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 */
57