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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 | |
cddb8751 AV |
20 | #include <linux/device.h> |
21 | #include <linux/kernel.h> | |
22 | #include <linux/list.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/init.h> | |
25 | ||
26 | struct persistent_ram_buffer; | |
27 | ||
28 | struct persistent_ram_descriptor { | |
29 | const char *name; | |
30 | phys_addr_t size; | |
31 | }; | |
32 | ||
33 | struct persistent_ram { | |
34 | phys_addr_t start; | |
35 | phys_addr_t size; | |
36 | ||
37 | int num_descs; | |
38 | struct persistent_ram_descriptor *descs; | |
39 | ||
40 | struct list_head node; | |
41 | }; | |
42 | ||
43 | struct persistent_ram_zone { | |
44 | phys_addr_t paddr; | |
45 | size_t size; | |
46 | void *vaddr; | |
47 | struct persistent_ram_buffer *buffer; | |
48 | size_t buffer_size; | |
49 | ||
50 | /* ECC correction */ | |
51 | bool ecc; | |
52 | char *par_buffer; | |
53 | char *par_header; | |
54 | struct rs_control *rs_decoder; | |
55 | int corrected_bytes; | |
56 | int bad_blocks; | |
57 | int ecc_block_size; | |
58 | int ecc_size; | |
59 | int ecc_symsize; | |
60 | int ecc_poly; | |
61 | ||
62 | char *old_log; | |
63 | size_t old_log_size; | |
64 | }; | |
65 | ||
66 | int persistent_ram_early_init(struct persistent_ram *ram); | |
67 | ||
68 | struct persistent_ram_zone * __init persistent_ram_new(phys_addr_t start, | |
69 | size_t size, | |
70 | bool ecc); | |
71 | void persistent_ram_free(struct persistent_ram_zone *prz); | |
72 | struct persistent_ram_zone *persistent_ram_init_ringbuffer(struct device *dev, | |
73 | bool ecc); | |
74 | ||
75 | int persistent_ram_write(struct persistent_ram_zone *prz, const void *s, | |
76 | unsigned int count); | |
77 | ||
78 | size_t persistent_ram_old_size(struct persistent_ram_zone *prz); | |
79 | void *persistent_ram_old(struct persistent_ram_zone *prz); | |
80 | void persistent_ram_free_old(struct persistent_ram_zone *prz); | |
81 | ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz, | |
82 | char *str, size_t len); | |
83 | ||
c3b92ce9 KP |
84 | /* |
85 | * Ramoops platform data | |
86 | * @mem_size memory size for ramoops | |
87 | * @mem_address physical memory address to contain ramoops | |
88 | */ | |
89 | ||
90 | struct ramoops_platform_data { | |
91 | unsigned long mem_size; | |
92 | unsigned long mem_address; | |
3e5c4fad | 93 | unsigned long record_size; |
6b4d2a27 | 94 | int dump_oops; |
c3b92ce9 KP |
95 | }; |
96 | ||
97 | #endif |