| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) International Business Machines Corp., 2006 |
| 3 | * Copyright (C) 2009 Nokia Corporation |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 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 |
| 13 | * the GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 18 | * |
| 19 | * Author: Artem Bityutskiy |
| 20 | * |
| 21 | * MTD library. |
| 22 | */ |
| 23 | |
| 24 | #ifndef __LIBMTD_INT_H__ |
| 25 | #define __LIBMTD_INT_H__ |
| 26 | |
| 27 | #ifdef __cplusplus |
| 28 | extern "C" { |
| 29 | #endif |
| 30 | |
| 31 | #define PROGRAM_NAME "libmtd" |
| 32 | |
| 33 | #define SYSFS_MTD "class/mtd" |
| 34 | #define MTD_NAME_PATT "mtd%d" |
| 35 | #define MTD_DEV "dev" |
| 36 | #define MTD_NAME "name" |
| 37 | #define MTD_TYPE "type" |
| 38 | #define MTD_EB_SIZE "erasesize" |
| 39 | #define MTD_SIZE "size" |
| 40 | #define MTD_MIN_IO_SIZE "writesize" |
| 41 | #define MTD_SUBPAGE_SIZE "subpagesize" |
| 42 | #define MTD_OOB_SIZE "oobsize" |
| 43 | #define MTD_REGION_CNT "numeraseregions" |
| 44 | #define MTD_FLAGS "flags" |
| 45 | |
| 46 | #define OFFS64_IOCTLS_UNKNOWN 0 |
| 47 | #define OFFS64_IOCTLS_NOT_SUPPORTED 1 |
| 48 | #define OFFS64_IOCTLS_SUPPORTED 2 |
| 49 | |
| 50 | /** |
| 51 | * libmtd - MTD library description data structure. |
| 52 | * @sysfs_mtd: MTD directory in sysfs |
| 53 | * @mtd: MTD device sysfs directory pattern |
| 54 | * @mtd_dev: MTD device major/minor numbers file pattern |
| 55 | * @mtd_name: MTD device name file pattern |
| 56 | * @mtd_type: MTD device type file pattern |
| 57 | * @mtd_eb_size: MTD device eraseblock size file pattern |
| 58 | * @mtd_size: MTD device size file pattern |
| 59 | * @mtd_min_io_size: minimum I/O unit size file pattern |
| 60 | * @mtd_subpage_size: sub-page size file pattern |
| 61 | * @mtd_oob_size: MTD device OOB size file pattern |
| 62 | * @mtd_region_cnt: count of additional erase regions file pattern |
| 63 | * @mtd_flags: MTD device flags file pattern |
| 64 | * @sysfs_supported: non-zero if sysfs is supported by MTD |
| 65 | * @offs64_ioctls: %OFFS64_IOCTLS_SUPPORTED if 64-bit %MEMERASE64, |
| 66 | * %MEMREADOOB64, %MEMWRITEOOB64 MTD device ioctls are |
| 67 | * supported, %OFFS64_IOCTLS_NOT_SUPPORTED if not, and |
| 68 | * %OFFS64_IOCTLS_UNKNOWN if it is not known yet; |
| 69 | * |
| 70 | * Note, we cannot find out whether 64-bit ioctls are supported by MTD when we |
| 71 | * are initializing the library, because this requires an MTD device node. |
| 72 | * Indeed, we have to actually call the ioctl and check for %ENOTTY to find |
| 73 | * out whether it is supported or not. |
| 74 | * |
| 75 | * Thus, we leave %offs64_ioctls uninitialized in 'libmtd_open()', and |
| 76 | * initialize it later, when corresponding libmtd function is used, and when |
| 77 | * we actually have a device node and can invoke an ioctl command on it. |
| 78 | */ |
| 79 | struct libmtd |
| 80 | { |
| 81 | char *sysfs_mtd; |
| 82 | char *mtd; |
| 83 | char *mtd_dev; |
| 84 | char *mtd_name; |
| 85 | char *mtd_type; |
| 86 | char *mtd_eb_size; |
| 87 | char *mtd_size; |
| 88 | char *mtd_min_io_size; |
| 89 | char *mtd_subpage_size; |
| 90 | char *mtd_oob_size; |
| 91 | char *mtd_region_cnt; |
| 92 | char *mtd_flags; |
| 93 | unsigned int sysfs_supported:1; |
| 94 | unsigned int offs64_ioctls:2; |
| 95 | }; |
| 96 | |
| 97 | int legacy_libmtd_open(void); |
| 98 | int legacy_dev_present(int mtd_num); |
| 99 | int legacy_mtd_get_info(struct mtd_info *info); |
| 100 | int legacy_get_dev_info(const char *node, struct mtd_dev_info *mtd); |
| 101 | int legacy_get_dev_info1(int dev_num, struct mtd_dev_info *mtd); |
| 102 | |
| 103 | #ifdef __cplusplus |
| 104 | } |
| 105 | #endif |
| 106 | |
| 107 | #endif /* !__LIBMTD_INT_H__ */ |