/*-
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 *
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 *       notice, this list of conditions and the following disclaimer.
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 *       notice, this list of conditions and the following disclaimer in
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 *       distribution.
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 */

#ifndef SPDK_MEMORY_H
#define SPDK_MEMORY_H

#include "spdk/stdinc.h"

#ifdef __cplusplus
extern "C" {
#endif

#define SHIFT_2MB		21 /* (1 << 21) == 2MB */
#define VALUE_2MB		(1ULL << SHIFT_2MB)
#define MASK_2MB		(VALUE_2MB - 1)

#define SHIFT_4KB		12 /* (1 << 12) == 4KB */
#define VALUE_4KB		(1ULL << SHIFT_4KB)
#define MASK_4KB		(VALUE_4KB - 1)

#define _2MB_OFFSET(ptr)	(((uintptr_t)(ptr)) & MASK_2MB)
#define _2MB_PAGE(ptr)		FLOOR_2MB((uintptr_t)(ptr))
#define FLOOR_2MB(x)		(((uintptr_t)(x)) & ~MASK_2MB)
#define CEIL_2MB(x)		FLOOR_2MB(((uintptr_t)(x)) + VALUE_2MB - 1)

#ifdef __cplusplus
}
#endif

#endif /* SPDK_MEMORY_H */