1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | |
3 | #ifndef __PSTORE_BLK_H_ |
4 | #define __PSTORE_BLK_H_ |
5 | |
6 | #include <linux/types.h> |
7 | #include <linux/pstore.h> |
8 | #include <linux/pstore_zone.h> |
9 | |
10 | /** |
11 | * struct pstore_device_info - back-end pstore/blk driver structure. |
12 | * |
13 | * @flags: Refer to macro starting with PSTORE_FLAGS defined in |
14 | * linux/pstore.h. It means what front-ends this device support. |
15 | * Zero means all backends for compatible. |
16 | * @zone: The struct pstore_zone_info details. |
17 | * |
18 | */ |
19 | struct pstore_device_info { |
20 | unsigned int flags; |
21 | struct pstore_zone_info zone; |
22 | }; |
23 | |
24 | int register_pstore_device(struct pstore_device_info *dev); |
25 | void unregister_pstore_device(struct pstore_device_info *dev); |
26 | |
27 | /** |
28 | * struct pstore_blk_config - the pstore_blk backend configuration |
29 | * |
30 | * @device: Name of the desired block device |
31 | * @max_reason: Maximum kmsg dump reason to store to block device |
32 | * @kmsg_size: Total size of for kmsg dumps |
33 | * @pmsg_size: Total size of the pmsg storage area |
34 | * @console_size: Total size of the console storage area |
35 | * @ftrace_size: Total size for ftrace logging data (for all CPUs) |
36 | */ |
37 | struct pstore_blk_config { |
38 | char device[80]; |
39 | enum kmsg_dump_reason max_reason; |
40 | unsigned long kmsg_size; |
41 | unsigned long pmsg_size; |
42 | unsigned long console_size; |
43 | unsigned long ftrace_size; |
44 | }; |
45 | |
46 | /** |
47 | * pstore_blk_get_config - get a copy of the pstore_blk backend configuration |
48 | * |
49 | * @info: The sturct pstore_blk_config to be filled in |
50 | * |
51 | * Failure returns negative error code, and success returns 0. |
52 | */ |
53 | int pstore_blk_get_config(struct pstore_blk_config *info); |
54 | |
55 | #endif |
56 | |