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/*
* Copyright (c) International Business Machines Corp., 2006
* Copyright (C) 2009 Nokia Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Author: Artem Bityutskiy
*
* MTD library.
*/
#ifndef __LIBMTD_INT_H__
#define __LIBMTD_INT_H__
#ifdef __cplusplus
extern "C" {
#endif
#define PROGRAM_NAME "libmtd"
#ifndef SYSFS_ROOT
#define SYSFS_ROOT "/sys"
#endif
#define SYSFS_MTD "class/mtd"
#define MTD_NAME_PATT "mtd%d"
#define MTD_DEV "dev"
#define MTD_NAME "name"
#define MTD_TYPE "type"
#define MTD_EB_SIZE "erasesize"
#define MTD_SIZE "size"
#define MTD_MIN_IO_SIZE "writesize"
#define MTD_SUBPAGE_SIZE "subpagesize"
#define MTD_OOB_SIZE "oobsize"
#define MTD_REGION_CNT "numeraseregions"
#define MTD_FLAGS "flags"
#define OFFS64_IOCTLS_UNKNOWN 0
#define OFFS64_IOCTLS_NOT_SUPPORTED 1
#define OFFS64_IOCTLS_SUPPORTED 2
/**
* libmtd - MTD library description data structure.
* @sysfs_mtd: MTD directory in sysfs
* @mtd: MTD device sysfs directory pattern
* @mtd_dev: MTD device major/minor numbers file pattern
* @mtd_name: MTD device name file pattern
* @mtd_type: MTD device type file pattern
* @mtd_eb_size: MTD device eraseblock size file pattern
* @mtd_size: MTD device size file pattern
* @mtd_min_io_size: minimum I/O unit size file pattern
* @mtd_subpage_size: sub-page size file pattern
* @mtd_oob_size: MTD device OOB size file pattern
* @mtd_region_cnt: count of additional erase regions file pattern
* @mtd_flags: MTD device flags file pattern
* @sysfs_supported: non-zero if sysfs is supported by MTD
* @offs64_ioctls: %OFFS64_IOCTLS_SUPPORTED if 64-bit %MEMERASE64,
* %MEMREADOOB64, %MEMWRITEOOB64 MTD device ioctls are
* supported, %OFFS64_IOCTLS_NOT_SUPPORTED if not, and
* %OFFS64_IOCTLS_UNKNOWN if it is not known yet;
*
* Note, we cannot find out whether 64-bit ioctls are supported by MTD when we
* are initializing the library, because this requires an MTD device node.
* Indeed, we have to actually call the ioctl and check for %ENOTTY to find
* out whether it is supported or not.
*
* Thus, we leave %offs64_ioctls uninitialized in 'libmtd_open()', and
* initialize it later, when corresponding libmtd function is used, and when
* we actually have a device node and can invoke an ioctl command on it.
*/
struct libmtd
{
char *sysfs_mtd;
char *mtd;
char *mtd_dev;
char *mtd_name;
char *mtd_type;
char *mtd_eb_size;
char *mtd_size;
char *mtd_min_io_size;
char *mtd_subpage_size;
char *mtd_oob_size;
char *mtd_region_cnt;
char *mtd_flags;
unsigned int sysfs_supported:1;
unsigned int offs64_ioctls:2;
};
int legacy_procfs_is_supported(void);
int legacy_dev_present(int mtd_num);
int legacy_mtd_get_info(struct mtd_info *info);
int legacy_get_dev_info(const char *node, struct mtd_dev_info *mtd);
int legacy_get_dev_info1(int dev_num, struct mtd_dev_info *mtd);
#ifdef __cplusplus
}
#endif
#endif /* !__LIBMTD_INT_H__ */
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