diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/mtd/bbm.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/mtd/bbm.h | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/ANDROID_3.4.5/include/linux/mtd/bbm.h b/ANDROID_3.4.5/include/linux/mtd/bbm.h deleted file mode 100644 index 5bc50e08..00000000 --- a/ANDROID_3.4.5/include/linux/mtd/bbm.h +++ /dev/null @@ -1,176 +0,0 @@ -/* - * linux/include/linux/mtd/bbm.h - * - * NAND family Bad Block Management (BBM) header file - * - Bad Block Table (BBT) implementation - * - * Copyright © 2005 Samsung Electronics - * Kyungmin Park <kyungmin.park@samsung.com> - * - * Copyright © 2000-2005 - * Thomas Gleixner <tglx@linuxtronix.de> - * - * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - */ -#ifndef __LINUX_MTD_BBM_H -#define __LINUX_MTD_BBM_H - -/* The maximum number of NAND chips in an array */ -#define NAND_MAX_CHIPS 8 - -/** - * struct nand_bbt_descr - bad block table descriptor - * @options: options for this descriptor - * @pages: the page(s) where we find the bbt, used with option BBT_ABSPAGE - * when bbt is searched, then we store the found bbts pages here. - * Its an array and supports up to 8 chips now - * @offs: offset of the pattern in the oob area of the page - * @veroffs: offset of the bbt version counter in the oob are of the page - * @version: version read from the bbt page during scan - * @len: length of the pattern, if 0 no pattern check is performed - * @maxblocks: maximum number of blocks to search for a bbt. This number of - * blocks is reserved at the end of the device where the tables are - * written. - * @reserved_block_code: if non-0, this pattern denotes a reserved (rather than - * bad) block in the stored bbt - * @pattern: pattern to identify bad block table or factory marked good / - * bad blocks, can be NULL, if len = 0 - * - * Descriptor for the bad block table marker and the descriptor for the - * pattern which identifies good and bad blocks. The assumption is made - * that the pattern and the version count are always located in the oob area - * of the first block. - */ -struct nand_bbt_descr { - int options; - int pages[NAND_MAX_CHIPS]; - int offs; - int veroffs; - uint8_t version[NAND_MAX_CHIPS]; - int len; - int maxblocks; - int reserved_block_code; - uint8_t *pattern; - int page_offset[2]; /* used to record bad block signature in which pages.*/ -}; - -/* Options for the bad block table descriptors */ - -/* The number of bits used per block in the bbt on the device */ -#define NAND_BBT_NRBITS_MSK 0x0000000F -#define NAND_BBT_1BIT 0x00000001 -#define NAND_BBT_2BIT 0x00000002 -#define NAND_BBT_4BIT 0x00000004 -#define NAND_BBT_8BIT 0x00000008 -/* The bad block table is in the last good block of the device */ -#define NAND_BBT_LASTBLOCK 0x00000010 -/* The bbt is at the given page, else we must scan for the bbt */ -#define NAND_BBT_ABSPAGE 0x00000020 -/* The bbt is at the given page, else we must scan for the bbt */ -#define NAND_BBT_SEARCH 0x00000040 -/* bbt is stored per chip on multichip devices */ -#define NAND_BBT_PERCHIP 0x00000080 -/* bbt has a version counter at offset veroffs */ -#define NAND_BBT_VERSION 0x00000100 -/* Create a bbt if none exists */ -#define NAND_BBT_CREATE 0x00000200 -/* - * Create an empty BBT with no vendor information. Vendor's information may be - * unavailable, for example, if the NAND controller has a different data and OOB - * layout or if this information is already purged. Must be used in conjunction - * with NAND_BBT_CREATE. - */ -#define NAND_BBT_CREATE_EMPTY 0x00000400 -/* Search good / bad pattern through all pages of a block */ -#define NAND_BBT_SCANALLPAGES 0x00000800 -/* Scan block empty during good / bad block scan */ -#define NAND_BBT_SCANEMPTY 0x00001000 -/* Write bbt if neccecary */ -#define NAND_BBT_WRITE 0x00002000 -/* Read and write back block contents when writing bbt */ -#define NAND_BBT_SAVECONTENT 0x00004000 -/* Search good / bad pattern on the first and the second page */ -#define NAND_BBT_SCAN2NDPAGE 0x00008000 -/* Search good / bad pattern on the last page of the eraseblock */ -#define NAND_BBT_SCANLASTPAGE 0x00010000 -/* - * Use a flash based bad block table. By default, OOB identifier is saved in - * OOB area. This option is passed to the default bad block table function. - */ -#define NAND_BBT_USE_FLASH 0x00020000 -/* Do not store flash based bad block table in OOB area; store it in-band */ -#define NAND_BBT_NO_OOB 0x00040000 -/* - * Do not write new bad block markers to OOB; useful, e.g., when ECC covers - * entire spare area. Must be used with NAND_BBT_USE_FLASH. - */ -#define NAND_BBT_NO_OOB_BBM 0x00080000 - -/* - * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr - * was allocated dynamicaly and must be freed in nand_release(). Has no meaning - * in nand_chip.bbt_options. - */ -#define NAND_BBT_DYNAMICSTRUCT 0x80000000 - -/* The maximum number of blocks to scan for a bbt */ -#define NAND_BBT_SCAN_MAXBLOCKS 4 - -/* - * Constants for oob configuration - */ -#define NAND_SMALL_BADBLOCK_POS 5 -#define NAND_LARGE_BADBLOCK_POS 0 -#define ONENAND_BADBLOCK_POS 0 - -/* - * Bad block scanning errors - */ -#define ONENAND_BBT_READ_ERROR 1 -#define ONENAND_BBT_READ_ECC_ERROR 2 -#define ONENAND_BBT_READ_FATAL_ERROR 4 - -/** - * struct bbm_info - [GENERIC] Bad Block Table data structure - * @bbt_erase_shift: [INTERN] number of address bits in a bbt entry - * @badblockpos: [INTERN] position of the bad block marker in the oob area - * @options: options for this descriptor - * @bbt: [INTERN] bad block table pointer - * @isbad_bbt: function to determine if a block is bad - * @badblock_pattern: [REPLACEABLE] bad block scan pattern used for - * initial bad block scan - * @priv: [OPTIONAL] pointer to private bbm date - */ -struct bbm_info { - int bbt_erase_shift; - int badblockpos; - int options; - - uint8_t *bbt; - - int (*isbad_bbt)(struct mtd_info *mtd, loff_t ofs, int allowbbt); - - /* TODO Add more NAND specific fileds */ - struct nand_bbt_descr *badblock_pattern; - - void *priv; -}; - -/* OneNAND BBT interface */ -extern int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd); -extern int onenand_default_bbt(struct mtd_info *mtd); - -#endif /* __LINUX_MTD_BBM_H */ |