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2025cf9e | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
e1455744 DW |
2 | /* |
3 | * Copyright (c) 2014-2015, Intel Corporation. | |
e1455744 DW |
4 | */ |
5 | ||
6 | #ifndef __NVDIMM_PFN_H | |
7 | #define __NVDIMM_PFN_H | |
8 | ||
9 | #include <linux/types.h> | |
d9cbe09d | 10 | #include <linux/mmzone.h> |
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11 | |
12 | #define PFN_SIG_LEN 16 | |
13 | #define PFN_SIG "NVDIMM_PFN_INFO\0" | |
c5ed9268 | 14 | #define DAX_SIG "NVDIMM_DAX_INFO\0" |
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15 | |
16 | struct nd_pfn_sb { | |
17 | u8 signature[PFN_SIG_LEN]; | |
18 | u8 uuid[16]; | |
19 | u8 parent_uuid[16]; | |
20 | __le32 flags; | |
21 | __le16 version_major; | |
22 | __le16 version_minor; | |
cfe30b87 | 23 | __le64 dataoff; /* relative to namespace_base + start_pad */ |
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24 | __le64 npfns; |
25 | __le32 mode; | |
cfe30b87 DW |
26 | /* minor-version-1 additions for section alignment */ |
27 | __le32 start_pad; | |
28 | __le32 end_trunc; | |
45a0dac0 DW |
29 | /* minor-version-2 record the base alignment of the mapping */ |
30 | __le32 align; | |
7e3e888d | 31 | /* minor-version-3 guarantee the padding and flags are zero */ |
edbb52c2 AK |
32 | /* minor-version-4 record the page size and struct page size */ |
33 | __le32 page_size; | |
34 | __le16 page_struct_size; | |
35 | u8 padding[3994]; | |
e1455744 DW |
36 | __le64 checksum; |
37 | }; | |
d9cbe09d | 38 | |
e1455744 | 39 | #endif /* __NVDIMM_PFN_H */ |