projects / mirror_ubuntu-zesty-kernel.git / blame
| 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, | |
| 32 | PSTORE_TYPE_UNKNOWN = 255 | |
| 33 | }; | |
| 34 | ||
| 35 | struct pstore_info { | |
| 36 | struct module *owner; | |
| 37 | char *name; | |
| abd4d558 | 38 | spinlock_t buf_lock; /* serialize access to 'buf' */ |
| ca01d6dd TL |
39 | char *buf; |
| 40 | size_t bufsize; | |
| f6f82851 | 41 | struct mutex read_mutex; /* serialize open/read/close */ |
| 06cf91b4 CG |
42 | int (*open)(struct pstore_info *psi); |
| 43 | int (*close)(struct pstore_info *psi); | |
| 8d38d74b | 44 | ssize_t (*read)(u64 *id, enum pstore_type_id *type, |
| f6f82851 KC |
45 | struct timespec *time, char **buf, |
| 46 | struct pstore_info *psi); | |
| 3d6d8d20 KC |
47 | int (*write)(enum pstore_type_id type, |
| 48 | enum kmsg_dump_reason reason, u64 *id, | |
| b238b8fa | 49 | unsigned int part, size_t size, struct pstore_info *psi); |
| 56280682 | 50 | int (*erase)(enum pstore_type_id type, u64 id, |
| 638c1fd3 | 51 | struct pstore_info *psi); |
| 638c1fd3 | 52 | void *data; |
| ca01d6dd TL |
53 | }; |
| 54 | ||
| 55 | #ifdef CONFIG_PSTORE | |
| 56 | extern int pstore_register(struct pstore_info *); | |
| ca01d6dd TL |
57 | #else |
| 58 | static inline int | |
| 59 | pstore_register(struct pstore_info *psi) | |
| 60 | { | |
| 61 | return -ENODEV; | |
| 62 | } | |
| ca01d6dd TL |
63 | #endif |
| 64 | ||
| 65 | #endif /*_LINUX_PSTORE_H*/ |