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gerrit-public.fairphone.software / kernel / msm-4.9 / d9b4330adec006c2e8907bdcacd9dcc0e8874d18 / . / include / linux / pstore_ram.h
blob: cb6ab5feab67812e6c55c31b23a9c504f8e63b5c [file] [log] [blame]
Anton Vorontsovcddb8752012-05-17 00:15:08 -0700[diff] [blame]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
Anton Vorontsov1894a252012-05-16 05:43:08 -0700[diff] [blame]17#ifndef __LINUX_PSTORE_RAM_H__
18#define __LINUX_PSTORE_RAM_H__
Kyungmin Parkc3b92ce2010-10-27 15:34:52 -0700[diff] [blame]19
Anton Vorontsovcddb8752012-05-17 00:15:08 -0700[diff] [blame]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
26struct persistent_ram_buffer;
Anton Vorontsov67a101f2012-07-17 11:37:07 -0700[diff] [blame]27struct rs_control;
Anton Vorontsovcddb8752012-05-17 00:15:08 -0700[diff] [blame]28
Anton Vorontsovcddb8752012-05-17 00:15:08 -0700[diff] [blame]29struct persistent_ram_zone {
30 phys_addr_t paddr;
31 size_t size;
32 void *vaddr;
33 struct persistent_ram_buffer *buffer;
34 size_t buffer_size;
35
36 /* ECC correction */
Anton Vorontsovcddb8752012-05-17 00:15:08 -0700[diff] [blame]37 char *par_buffer;
38 char *par_header;
39 struct rs_control *rs_decoder;
40 int corrected_bytes;
41 int bad_blocks;
42 int ecc_block_size;
43 int ecc_size;
Anton Vorontsovcddb8752012-05-17 00:15:08 -0700[diff] [blame]44
45 char *old_log;
46 size_t old_log_size;
47};
48
Greg Kroah-Hartmanf568f6c2012-12-21 15:02:05 -0800[diff] [blame]49struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size,
50 u32 sig, int ecc_size);
Anton Vorontsovcddb8752012-05-17 00:15:08 -0700[diff] [blame]51void persistent_ram_free(struct persistent_ram_zone *prz);
Anton Vorontsovfce39792012-05-26 06:07:51 -0700[diff] [blame]52void persistent_ram_zap(struct persistent_ram_zone *prz);
Anton Vorontsovcddb8752012-05-17 00:15:08 -0700[diff] [blame]53
54int persistent_ram_write(struct persistent_ram_zone *prz, const void *s,
55 unsigned int count);
56
Anton Vorontsov201e4ac2012-05-26 06:07:49 -0700[diff] [blame]57void persistent_ram_save_old(struct persistent_ram_zone *prz);
Anton Vorontsovcddb8752012-05-17 00:15:08 -0700[diff] [blame]58size_t persistent_ram_old_size(struct persistent_ram_zone *prz);
59void *persistent_ram_old(struct persistent_ram_zone *prz);
60void persistent_ram_free_old(struct persistent_ram_zone *prz);
61ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz,
62 char *str, size_t len);
63
Kyungmin Parkc3b92ce2010-10-27 15:34:52 -0700[diff] [blame]64/*
65 * Ramoops platform data
66 * @mem_size memory size for ramoops
67 * @mem_address physical memory address to contain ramoops
68 */
69
70struct ramoops_platform_data {
71 unsigned long mem_size;
72 unsigned long mem_address;
Sergiu Iordache3e5c4fa2011-07-26 16:08:59 -0700[diff] [blame]73 unsigned long record_size;
Anton Vorontsovb5d38e92012-05-26 06:20:23 -0700[diff] [blame]74 unsigned long console_size;
Anton Vorontsova694d1b2012-07-09 17:10:44 -0700[diff] [blame]75 unsigned long ftrace_size;
Sergiu Iordache6b4d2a22011-07-26 16:08:58 -0700[diff] [blame]76 int dump_oops;
Anton Vorontsov5ca5d4e2012-07-09 17:03:19 -0700[diff] [blame]77 int ecc_size;
Kyungmin Parkc3b92ce2010-10-27 15:34:52 -0700[diff] [blame]78};
79
80#endif