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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
f295e53b DW |
2 | #ifndef __NVDIMM_PMEM_H__ |
3 | #define __NVDIMM_PMEM_H__ | |
4 | #include <linux/badblocks.h> | |
5 | #include <linux/types.h> | |
6 | #include <linux/pfn_t.h> | |
7 | #include <linux/fs.h> | |
8 | ||
f295e53b DW |
9 | /* this definition is in it's own header for tools/testing/nvdimm to consume */ |
10 | struct pmem_device { | |
11 | /* One contiguous memory region per device */ | |
12 | phys_addr_t phys_addr; | |
13 | /* when non-zero this device is hosting a 'pfn' instance */ | |
14 | phys_addr_t data_offset; | |
15 | u64 pfn_flags; | |
7a9eb206 | 16 | void *virt_addr; |
f295e53b DW |
17 | /* immutable base size of the namespace */ |
18 | size_t size; | |
19 | /* trim size when namespace capacity has been section aligned */ | |
20 | u32 pfn_pad; | |
975750a9 | 21 | struct kernfs_node *bb_state; |
f295e53b | 22 | struct badblocks bb; |
c1d6e828 DW |
23 | struct dax_device *dax_dev; |
24 | struct gendisk *disk; | |
e8d51348 | 25 | struct dev_pagemap pgmap; |
f295e53b | 26 | }; |
c1d6e828 DW |
27 | |
28 | long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff, | |
29 | long nr_pages, void **kaddr, pfn_t *pfn); | |
f295e53b | 30 | #endif /* __NVDIMM_PMEM_H__ */ |