projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| e1455744 DW |
1 | /* |
| 2 | * Copyright (c) 2014-2015, Intel Corporation. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify it | |
| 5 | * under the terms and conditions of the GNU General Public License, | |
| 6 | * version 2, as published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 11 | * more details. | |
| 12 | */ | |
| 13 | ||
| 14 | #ifndef __NVDIMM_PFN_H | |
| 15 | #define __NVDIMM_PFN_H | |
| 16 | ||
| 17 | #include <linux/types.h> | |
| d9cbe09d | 18 | #include <linux/mmzone.h> |
| e1455744 DW |
19 | |
| 20 | #define PFN_SIG_LEN 16 | |
| 21 | #define PFN_SIG "NVDIMM_PFN_INFO\0" | |
| c5ed9268 | 22 | #define DAX_SIG "NVDIMM_DAX_INFO\0" |
| e1455744 DW |
23 | |
| 24 | struct nd_pfn_sb { | |
| 25 | u8 signature[PFN_SIG_LEN]; | |
| 26 | u8 uuid[16]; | |
| 27 | u8 parent_uuid[16]; | |
| 28 | __le32 flags; | |
| 29 | __le16 version_major; | |
| 30 | __le16 version_minor; | |
| cfe30b87 | 31 | __le64 dataoff; /* relative to namespace_base + start_pad */ |
| e1455744 DW |
32 | __le64 npfns; |
| 33 | __le32 mode; | |
| cfe30b87 DW |
34 | /* minor-version-1 additions for section alignment */ |
| 35 | __le32 start_pad; | |
| 36 | __le32 end_trunc; | |
| 45a0dac0 DW |
37 | /* minor-version-2 record the base alignment of the mapping */ |
| 38 | __le32 align; | |
| 39 | u8 padding[4000]; | |
| e1455744 DW |
40 | __le64 checksum; |
| 41 | }; | |
| d9cbe09d DW |
42 | |
| 43 | #ifdef CONFIG_SPARSEMEM | |
| 44 | #define PFN_SECTION_ALIGN_DOWN(x) SECTION_ALIGN_DOWN(x) | |
| 45 | #define PFN_SECTION_ALIGN_UP(x) SECTION_ALIGN_UP(x) | |
| 46 | #else | |
| 47 | /* | |
| 48 | * In this case ZONE_DEVICE=n and we will disable 'pfn' device support, | |
| 49 | * but we still want pmem to compile. | |
| 50 | */ | |
| 51 | #define PFN_SECTION_ALIGN_DOWN(x) (x) | |
| 52 | #define PFN_SECTION_ALIGN_UP(x) (x) | |
| 53 | #endif | |
| cfe30b87 DW |
54 | |
| 55 | #define PHYS_SECTION_ALIGN_DOWN(x) PFN_PHYS(PFN_SECTION_ALIGN_DOWN(PHYS_PFN(x))) | |
| 56 | #define PHYS_SECTION_ALIGN_UP(x) PFN_PHYS(PFN_SECTION_ALIGN_UP(PHYS_PFN(x))) | |
| e1455744 | 57 | #endif /* __NVDIMM_PFN_H */ |