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17639f67 WL |
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 | ||
7dcb7848 WL |
10 | /** |
11 | * struct pstore_device_info - back-end pstore/blk driver structure. | |
12 | * | |
7dcb7848 WL |
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. | |
1d1f6cc5 KC |
16 | * @zone: The struct pstore_zone_info details. |
17 | * | |
7dcb7848 WL |
18 | */ |
19 | struct pstore_device_info { | |
7dcb7848 | 20 | unsigned int flags; |
1d1f6cc5 | 21 | struct pstore_zone_info zone; |
7dcb7848 WL |
22 | }; |
23 | ||
24 | int register_pstore_device(struct pstore_device_info *dev); | |
25 | void unregister_pstore_device(struct pstore_device_info *dev); | |
26 | ||
1525fb3b WL |
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 | ||
17639f67 | 55 | #endif |