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cddb8751 AV |
1 | /* |
2 | * Copyright (C) 2010 Marco Stornelli <marco.stornelli@gmail.com> | |
3 | * Copyright (C) 2011 Kees Cook <keescook@chromium.org> | |
4 | * Copyright (C) 2011 Google, Inc. | |
5 | * | |
6 | * This software is licensed under the terms of the GNU General Public | |
7 | * License version 2, as published by the Free Software Foundation, and | |
8 | * may be copied, distributed, and modified under those terms. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | */ | |
16 | ||
1894a253 AV |
17 | #ifndef __LINUX_PSTORE_RAM_H__ |
18 | #define __LINUX_PSTORE_RAM_H__ | |
c3b92ce9 | 19 | |
5bf6d1b9 | 20 | #include <linux/compiler.h> |
cddb8751 | 21 | #include <linux/device.h> |
5bf6d1b9 | 22 | #include <linux/init.h> |
cddb8751 AV |
23 | #include <linux/kernel.h> |
24 | #include <linux/list.h> | |
25 | #include <linux/types.h> | |
cddb8751 AV |
26 | |
27 | struct persistent_ram_buffer; | |
67a101f5 | 28 | struct rs_control; |
cddb8751 | 29 | |
c31ad081 AH |
30 | struct persistent_ram_ecc_info { |
31 | int block_size; | |
32 | int ecc_size; | |
33 | int symsize; | |
34 | int poly; | |
35 | }; | |
36 | ||
cddb8751 AV |
37 | struct persistent_ram_zone { |
38 | phys_addr_t paddr; | |
39 | size_t size; | |
40 | void *vaddr; | |
41 | struct persistent_ram_buffer *buffer; | |
42 | size_t buffer_size; | |
43 | ||
44 | /* ECC correction */ | |
cddb8751 AV |
45 | char *par_buffer; |
46 | char *par_header; | |
47 | struct rs_control *rs_decoder; | |
48 | int corrected_bytes; | |
49 | int bad_blocks; | |
c31ad081 | 50 | struct persistent_ram_ecc_info ecc_info; |
cddb8751 AV |
51 | |
52 | char *old_log; | |
53 | size_t old_log_size; | |
54 | }; | |
55 | ||
f568f6ca | 56 | struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size, |
027bc8b0 TL |
57 | u32 sig, struct persistent_ram_ecc_info *ecc_info, |
58 | unsigned int memtype); | |
cddb8751 | 59 | void persistent_ram_free(struct persistent_ram_zone *prz); |
fce39793 | 60 | void persistent_ram_zap(struct persistent_ram_zone *prz); |
cddb8751 AV |
61 | |
62 | int persistent_ram_write(struct persistent_ram_zone *prz, const void *s, | |
5bf6d1b9 MS |
63 | unsigned int count); |
64 | int persistent_ram_write_user(struct persistent_ram_zone *prz, | |
65 | const void __user *s, unsigned int count); | |
cddb8751 | 66 | |
201e4aca | 67 | void persistent_ram_save_old(struct persistent_ram_zone *prz); |
cddb8751 AV |
68 | size_t persistent_ram_old_size(struct persistent_ram_zone *prz); |
69 | void *persistent_ram_old(struct persistent_ram_zone *prz); | |
70 | void persistent_ram_free_old(struct persistent_ram_zone *prz); | |
71 | ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz, | |
72 | char *str, size_t len); | |
73 | ||
c3b92ce9 KP |
74 | /* |
75 | * Ramoops platform data | |
76 | * @mem_size memory size for ramoops | |
77 | * @mem_address physical memory address to contain ramoops | |
78 | */ | |
79 | ||
80 | struct ramoops_platform_data { | |
81 | unsigned long mem_size; | |
764fd639 | 82 | phys_addr_t mem_address; |
027bc8b0 | 83 | unsigned int mem_type; |
3e5c4fad | 84 | unsigned long record_size; |
b5d38e9b | 85 | unsigned long console_size; |
a694d1b5 | 86 | unsigned long ftrace_size; |
9d5438f4 | 87 | unsigned long pmsg_size; |
6b4d2a27 | 88 | int dump_oops; |
c31ad081 | 89 | struct persistent_ram_ecc_info ecc_info; |
c3b92ce9 KP |
90 | }; |
91 | ||
92 | #endif |