Commit | Line | Data |
---|---|---|
ca01d6dd TL |
1 | /* |
2 | * Persistent Storage - pstore.h | |
3 | * | |
4 | * Copyright (C) 2010 Intel Corporation <tony.luck@intel.com> | |
5 | * | |
6 | * This code is the generic layer to export data records from platform | |
7 | * level persistent storage via a file system. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | #ifndef _LINUX_PSTORE_H | |
23 | #define _LINUX_PSTORE_H | |
24 | ||
3d6d8d20 KC |
25 | #include <linux/time.h> |
26 | #include <linux/kmsg_dump.h> | |
27 | ||
ca01d6dd TL |
28 | /* types */ |
29 | enum pstore_type_id { | |
30 | PSTORE_TYPE_DMESG = 0, | |
31 | PSTORE_TYPE_MCE = 1, | |
f29e5956 | 32 | PSTORE_TYPE_CONSOLE = 2, |
060287b8 | 33 | PSTORE_TYPE_FTRACE = 3, |
ca01d6dd TL |
34 | PSTORE_TYPE_UNKNOWN = 255 |
35 | }; | |
36 | ||
37 | struct pstore_info { | |
38 | struct module *owner; | |
39 | char *name; | |
abd4d558 | 40 | spinlock_t buf_lock; /* serialize access to 'buf' */ |
ca01d6dd TL |
41 | char *buf; |
42 | size_t bufsize; | |
f6f82851 | 43 | struct mutex read_mutex; /* serialize open/read/close */ |
06cf91b4 CG |
44 | int (*open)(struct pstore_info *psi); |
45 | int (*close)(struct pstore_info *psi); | |
8d38d74b | 46 | ssize_t (*read)(u64 *id, enum pstore_type_id *type, |
f6f82851 KC |
47 | struct timespec *time, char **buf, |
48 | struct pstore_info *psi); | |
3d6d8d20 KC |
49 | int (*write)(enum pstore_type_id type, |
50 | enum kmsg_dump_reason reason, u64 *id, | |
b238b8fa | 51 | unsigned int part, size_t size, struct pstore_info *psi); |
897dba02 AV |
52 | int (*write_buf)(enum pstore_type_id type, |
53 | enum kmsg_dump_reason reason, u64 *id, | |
54 | unsigned int part, const char *buf, size_t size, | |
55 | struct pstore_info *psi); | |
56280682 | 56 | int (*erase)(enum pstore_type_id type, u64 id, |
638c1fd3 | 57 | struct pstore_info *psi); |
638c1fd3 | 58 | void *data; |
ca01d6dd TL |
59 | }; |
60 | ||
060287b8 AV |
61 | |
62 | #ifdef CONFIG_PSTORE_FTRACE | |
63 | extern void pstore_ftrace_call(unsigned long ip, unsigned long parent_ip); | |
64 | #else | |
65 | static inline void pstore_ftrace_call(unsigned long ip, unsigned long parent_ip) | |
66 | { } | |
67 | #endif | |
68 | ||
ca01d6dd TL |
69 | #ifdef CONFIG_PSTORE |
70 | extern int pstore_register(struct pstore_info *); | |
ca01d6dd TL |
71 | #else |
72 | static inline int | |
73 | pstore_register(struct pstore_info *psi) | |
74 | { | |
75 | return -ENODEV; | |
76 | } | |
ca01d6dd TL |
77 | #endif |
78 | ||
79 | #endif /*_LINUX_PSTORE_H*/ |