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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2014-2015, Intel Corporation.
*/
#ifndef __NVDIMM_PFN_H
#define __NVDIMM_PFN_H
#include <linux/types.h>
#include <linux/mmzone.h>
#define PFN_SIG_LEN 16
#define PFN_SIG "NVDIMM_PFN_INFO\0"
#define DAX_SIG "NVDIMM_DAX_INFO\0"
struct nd_pfn_sb {
u8 signature[PFN_SIG_LEN];
u8 uuid[16];
u8 parent_uuid[16];
__le32 flags;
__le16 version_major;
__le16 version_minor;
__le64 dataoff; /* relative to namespace_base + start_pad */
__le64 npfns;
__le32 mode;
/* minor-version-1 additions for section alignment */
__le32 start_pad;
__le32 end_trunc;
/* minor-version-2 record the base alignment of the mapping */
__le32 align;
/* minor-version-3 guarantee the padding and flags are zero */
/* minor-version-4 record the page size and struct page size */
__le32 page_size;
__le16 page_struct_size;
u8 padding[3994];
__le64 checksum;
};
#endif /* __NVDIMM_PFN_H */
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