| Mark Salter | 9e5c33d | 2014-04-07 15:39:48 -0700 | [diff] [blame] | 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_ */ |