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9e5c33d7 MS |
1 | #ifndef _ASM_EARLY_IOREMAP_H_ |
2 | #define _ASM_EARLY_IOREMAP_H_ | |
3 | ||
4 | #include <linux/types.h> | |
5 | ||
6 | /* | |
7 | * early_ioremap() and early_iounmap() are for temporary early boot-time | |
8 | * mappings, before the real ioremap() is functional. | |
9 | */ | |
10 | extern void __iomem *early_ioremap(resource_size_t phys_addr, | |
11 | unsigned long size); | |
12 | extern void *early_memremap(resource_size_t phys_addr, | |
13 | unsigned long size); | |
14 | extern void early_iounmap(void __iomem *addr, unsigned long size); | |
15 | extern void early_memunmap(void *addr, unsigned long size); | |
16 | ||
17 | /* | |
18 | * Weak function called by early_ioremap_reset(). It does nothing, but | |
19 | * architectures may provide their own version to do any needed cleanups. | |
20 | */ | |
21 | extern void early_ioremap_shutdown(void); | |
22 | ||
23 | #if defined(CONFIG_GENERIC_EARLY_IOREMAP) && defined(CONFIG_MMU) | |
24 | /* Arch-specific initialization */ | |
25 | extern void early_ioremap_init(void); | |
26 | ||
27 | /* Generic initialization called by architecture code */ | |
28 | extern void early_ioremap_setup(void); | |
29 | ||
30 | /* | |
31 | * Called as last step in paging_init() so library can act | |
32 | * accordingly for subsequent map/unmap requests. | |
33 | */ | |
34 | extern void early_ioremap_reset(void); | |
35 | ||
36 | #else | |
37 | static inline void early_ioremap_init(void) { } | |
38 | static inline void early_ioremap_setup(void) { } | |
39 | static inline void early_ioremap_reset(void) { } | |
40 | #endif | |
41 | ||
42 | #endif /* _ASM_EARLY_IOREMAP_H_ */ |