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 */
19struct pstore_device_info {
20	unsigned int flags;
21	struct pstore_zone_info zone;
22};
23
24int  register_pstore_device(struct pstore_device_info *dev);
25void 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 */
37struct 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 */
53int pstore_blk_get_config(struct pstore_blk_config *info);
54
55#endif
56