[linux-2.6-block.git] / include / asm-generic / early_ioremap.h

#ifndef _ASM_EARLY_IOREMAP_H_
#define _ASM_EARLY_IOREMAP_H_

#include <linux/types.h>

/*
 * early_ioremap() and early_iounmap() are for temporary early boot-time
 * mappings, before the real ioremap() is functional.
 */
extern void __iomem *early_ioremap(resource_size_t phys_addr,
				   unsigned long size);
extern void *early_memremap(resource_size_t phys_addr,
			    unsigned long size);
extern void *early_memremap_ro(resource_size_t phys_addr,
			       unsigned long size);
extern void early_iounmap(void __iomem *addr, unsigned long size);
extern void early_memunmap(void *addr, unsigned long size);

/*
 * Weak function called by early_ioremap_reset(). It does nothing, but
 * architectures may provide their own version to do any needed cleanups.
 */
extern void early_ioremap_shutdown(void);

#if defined(CONFIG_GENERIC_EARLY_IOREMAP) && defined(CONFIG_MMU)
/* Arch-specific initialization */
extern void early_ioremap_init(void);

/* Generic initialization called by architecture code */
extern void early_ioremap_setup(void);

/*
 * Called as last step in paging_init() so library can act
 * accordingly for subsequent map/unmap requests.
 */
extern void early_ioremap_reset(void);

/*
 * Early copy from unmapped memory to kernel mapped memory.
 */
extern void copy_from_early_mem(void *dest, phys_addr_t src,
				unsigned long size);

#else
static inline void early_ioremap_init(void) { }
static inline void early_ioremap_setup(void) { }
static inline void early_ioremap_reset(void) { }
#endif

#endif /* _ASM_EARLY_IOREMAP_H_ */
Commit	Line	Data
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);
2592dbbb JG	14	extern void *early_memremap_ro(resource_size_t phys_addr,
2592dbbb JG	15	unsigned long size);
9e5c33d7 MS	16	extern void early_iounmap(void __iomem *addr, unsigned long size);
	17	extern void early_memunmap(void *addr, unsigned long size);
	18
	19	/*
	20	* Weak function called by early_ioremap_reset(). It does nothing, but
	21	* architectures may provide their own version to do any needed cleanups.
	22	*/
	23	extern void early_ioremap_shutdown(void);
	24
	25	#if defined(CONFIG_GENERIC_EARLY_IOREMAP) && defined(CONFIG_MMU)
	26	/* Arch-specific initialization */
	27	extern void early_ioremap_init(void);
	28
	29	/* Generic initialization called by architecture code */
	30	extern void early_ioremap_setup(void);
	31
	32	/*
	33	* Called as last step in paging_init() so library can act
	34	* accordingly for subsequent map/unmap requests.
	35	*/
	36	extern void early_ioremap_reset(void);
	37
6b0f68e3 MS	38	/*
	39	* Early copy from unmapped memory to kernel mapped memory.
	40	*/
	41	extern void copy_from_early_mem(void *dest, phys_addr_t src,
	42	unsigned long size);
	43
9e5c33d7 MS	44	#else
	45	static inline void early_ioremap_init(void) { }
	46	static inline void early_ioremap_setup(void) { }
	47	static inline void early_ioremap_reset(void) { }
	48	#endif
	49
	50	#endif /* _ASM_EARLY_IOREMAP_H_ */