Commit | Line | Data |
---|---|---|
3f0c8206 MS |
1 | #ifndef __OF_RESERVED_MEM_H |
2 | #define __OF_RESERVED_MEM_H | |
3 | ||
59ce4039 MS |
4 | #include <linux/device.h> |
5 | ||
f618c470 MS |
6 | struct of_phandle_args; |
7 | struct reserved_mem_ops; | |
8 | ||
3f0c8206 MS |
9 | struct reserved_mem { |
10 | const char *name; | |
11 | unsigned long fdt_node; | |
9dcfee01 | 12 | unsigned long phandle; |
f618c470 | 13 | const struct reserved_mem_ops *ops; |
3f0c8206 MS |
14 | phys_addr_t base; |
15 | phys_addr_t size; | |
f618c470 MS |
16 | void *priv; |
17 | }; | |
18 | ||
19 | struct reserved_mem_ops { | |
47f29df7 | 20 | int (*device_init)(struct reserved_mem *rmem, |
f618c470 MS |
21 | struct device *dev); |
22 | void (*device_release)(struct reserved_mem *rmem, | |
23 | struct device *dev); | |
3f0c8206 MS |
24 | }; |
25 | ||
9dd31075 RH |
26 | typedef int (*reservedmem_of_init_fn)(struct reserved_mem *rmem); |
27 | ||
54196ccb RH |
28 | #define RESERVEDMEM_OF_DECLARE(name, compat, init) \ |
29 | _OF_DECLARE(reservedmem, name, compat, init, reservedmem_of_init_fn) | |
f618c470 | 30 | |
3f0c8206 | 31 | #ifdef CONFIG_OF_RESERVED_MEM |
59ce4039 MS |
32 | |
33 | int of_reserved_mem_device_init_by_idx(struct device *dev, | |
34 | struct device_node *np, int idx); | |
9dcfee01 MS |
35 | void of_reserved_mem_device_release(struct device *dev); |
36 | ||
06dfeef8 BD |
37 | int early_init_dt_alloc_reserved_memory_arch(phys_addr_t size, |
38 | phys_addr_t align, | |
39 | phys_addr_t start, | |
40 | phys_addr_t end, | |
41 | bool nomap, | |
42 | phys_addr_t *res_base); | |
43 | ||
3f0c8206 MS |
44 | void fdt_init_reserved_mem(void); |
45 | void fdt_reserved_mem_save_node(unsigned long node, const char *uname, | |
46 | phys_addr_t base, phys_addr_t size); | |
47 | #else | |
59ce4039 MS |
48 | static inline int of_reserved_mem_device_init_by_idx(struct device *dev, |
49 | struct device_node *np, int idx) | |
47f29df7 MS |
50 | { |
51 | return -ENOSYS; | |
52 | } | |
9dcfee01 MS |
53 | static inline void of_reserved_mem_device_release(struct device *pdev) { } |
54 | ||
3f0c8206 MS |
55 | static inline void fdt_init_reserved_mem(void) { } |
56 | static inline void fdt_reserved_mem_save_node(unsigned long node, | |
57 | const char *uname, phys_addr_t base, phys_addr_t size) { } | |
58 | #endif | |
59 | ||
59ce4039 MS |
60 | /** |
61 | * of_reserved_mem_device_init() - assign reserved memory region to given device | |
62 | * @dev: Pointer to the device to configure | |
63 | * | |
64 | * This function assigns respective DMA-mapping operations based on the first | |
65 | * reserved memory region specified by 'memory-region' property in device tree | |
66 | * node of the given device. | |
67 | * | |
68 | * Returns error code or zero on success. | |
69 | */ | |
70 | static inline int of_reserved_mem_device_init(struct device *dev) | |
71 | { | |
72 | return of_reserved_mem_device_init_by_idx(dev, dev->of_node, 0); | |
73 | } | |
74 | ||
3f0c8206 | 75 | #endif /* __OF_RESERVED_MEM_H */ |