/*
* Copyright (C) 2010 Marco Stornelli <[email protected]>
* Copyright (C) 2011 Kees Cook <[email protected]>
* 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);
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 long record_size;
unsigned long console_size;
unsigned long ftrace_size;
int dump_oops;
struct persistent_ram_ecc_info ecc_info;
};

#endif