/*
   * Copyright (C) 2010 Marco Stornelli <marco.stornelli@gmail.com>
   * Copyright (C) 2011 Kees Cook <keescook@chromium.org>
   * Copyright (C) 2011 Google, Inc.
   *
   * This software is licensed under the terms of the GNU General Public
   * License version 2, as published by the Free Software Foundation, and
   * may be copied, distributed, and modified under those terms.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   */

  #ifndef __LINUX_PSTORE_RAM_H__
  #define __LINUX_PSTORE_RAM_H__

  #include <linux/device.h>
  #include <linux/kernel.h>
  #include <linux/list.h>
  #include <linux/types.h>
  #include <linux/init.h>
  
  struct persistent_ram_buffer;

  struct rs_control;

  struct persistent_ram_ecc_info {
  	int block_size;
  	int ecc_size;
  	int symsize;
  	int poly;
  };

  struct persistent_ram_zone {
  	phys_addr_t paddr;
  	size_t size;
  	void *vaddr;
  	struct persistent_ram_buffer *buffer;
  	size_t buffer_size;
  
  	/* ECC correction */

  	char *par_buffer;
  	char *par_header;
  	struct rs_control *rs_decoder;
  	int corrected_bytes;
  	int bad_blocks;

  	struct persistent_ram_ecc_info ecc_info;

  
  	char *old_log;
  	size_t old_log_size;
  };

  struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size,

  			u32 sig, struct persistent_ram_ecc_info *ecc_info,
  			unsigned int memtype);

  void persistent_ram_free(struct persistent_ram_zone *prz);

  void persistent_ram_zap(struct persistent_ram_zone *prz);

  
  int persistent_ram_write(struct persistent_ram_zone *prz, const void *s,
  	unsigned int count);

  void persistent_ram_save_old(struct persistent_ram_zone *prz);

  size_t persistent_ram_old_size(struct persistent_ram_zone *prz);
  void *persistent_ram_old(struct persistent_ram_zone *prz);
  void persistent_ram_free_old(struct persistent_ram_zone *prz);
  ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz,
  	char *str, size_t len);

  /*
   * Ramoops platform data
   * @mem_size	memory size for ramoops
   * @mem_address	physical memory address to contain ramoops
   */
  
  struct ramoops_platform_data {
  	unsigned long	mem_size;
  	unsigned long	mem_address;

  	unsigned int	mem_type;

  	unsigned long	record_size;

  	unsigned long	console_size;

  	unsigned long	ftrace_size;

  	unsigned long	pmsg_size;

  	int		dump_oops;

  	struct persistent_ram_ecc_info ecc_info;

  };
  
  #endif