LXR linux/include/linux/pstore

   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
  17#ifndef __LINUX_PSTORE_RAM_H__
  18#define __LINUX_PSTORE_RAM_H__
  19
  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;
  27struct rs_control;
  28
  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 */
  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;
  44
  45        char *old_log;
  46        size_t old_log_size;
  47};
  48
  49struct persistent_ram_zone * __devinit persistent_ram_new(phys_addr_t start,
  50                                                          size_t size, u32 sig,
  51                                                          int ecc_size);
  52void persistent_ram_free(struct persistent_ram_zone *prz);
  53void persistent_ram_zap(struct persistent_ram_zone *prz);
  54
  55int persistent_ram_write(struct persistent_ram_zone *prz, const void *s,
  56        unsigned int count);
  57
  58void persistent_ram_save_old(struct persistent_ram_zone *prz);
  59size_t persistent_ram_old_size(struct persistent_ram_zone *prz);
  60void *persistent_ram_old(struct persistent_ram_zone *prz);
  61void persistent_ram_free_old(struct persistent_ram_zone *prz);
  62ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz,
  63        char *str, size_t len);
  64
  65/*
  66 * Ramoops platform data
  67 * @mem_size    memory size for ramoops
  68 * @mem_address physical memory address to contain ramoops
  69 */
  70
  71struct ramoops_platform_data {
  72        unsigned long   mem_size;
  73        unsigned long   mem_address;
  74        unsigned long   record_size;
  75        unsigned long   console_size;
  76        unsigned long   ftrace_size;
  77        int             dump_oops;
  78        int             ecc_size;
  79};
  80
  81#endif
  82