diff options
| author | David A. Marlin <dmarlin@redhat.com> | 2005-01-17 18:29:21 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-05-23 11:22:05 +0200 |
| commit | 28a48de72b876af794853593cc1412119ada9efc (patch) | |
| tree | fb1e6e5f98bf348d019d586d47be0e89466c98cf /include/linux/mtd | |
| parent | 8ea2e06fc8d2f03b49cef7732ae8e290e2f0b183 (diff) | |
[MTD] NAND extended commands, badb block table autorefresh
Added extended commands for AG-AND device and added
option for BBT_AUTO_REFRESH.
Signed-off-by: David A. Marlin <dmarlin@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/mtd')
| -rw-r--r-- | include/linux/mtd/nand.h | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 9a19c65abd74..0118128ae384 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -5,7 +5,7 @@ * Steven J. Hill <sjhill@realitydiluted.com> * Thomas Gleixner <tglx@linutronix.de> * - * $Id: nand.h,v 1.68 2004/11/12 10:40:37 gleixner Exp $ + * $Id: nand.h,v 1.69 2005/01/17 18:29:18 dmarlin Exp $ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -48,6 +48,8 @@ * 02-08-2004 tglx added option field to nand structure for chip anomalities * 05-25-2004 tglx added bad block table support, ST-MICRO manufacturer id * update of nand_chip structure description + * 01-17-2005 dmarlin added extended commands for AG-AND device and added option + * for BBT_AUTO_REFRESH. */ #ifndef __LINUX_MTD_NAND_H #define __LINUX_MTD_NAND_H @@ -115,6 +117,25 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_ #define NAND_CMD_READSTART 0x30 #define NAND_CMD_CACHEDPROG 0x15 +/* Extended commands for AG-AND device */ +/* + * Note: the command for NAND_CMD_DEPLETE1 is really 0x00 but + * there is no way to distinguish that from NAND_CMD_READ0 + * until the remaining sequence of commands has been completed + * so add a high order bit and mask it off in the command. + */ +#define NAND_CMD_DEPLETE1 0x100 +#define NAND_CMD_DEPLETE2 0x38 +#define NAND_CMD_STATUS_MULTI 0x71 +#define NAND_CMD_STATUS_ERROR 0x72 +/* multi-bank error status (banks 0-3) */ +#define NAND_CMD_STATUS_ERROR0 0x73 +#define NAND_CMD_STATUS_ERROR1 0x74 +#define NAND_CMD_STATUS_ERROR2 0x75 +#define NAND_CMD_STATUS_ERROR3 0x76 +#define NAND_CMD_STATUS_RESET 0x7f +#define NAND_CMD_STATUS_CLEAR 0xff + /* Status bits */ #define NAND_STATUS_FAIL 0x01 #define NAND_STATUS_FAIL_N1 0x02 @@ -170,6 +191,10 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_ /* Chip has a array of 4 pages which can be read without * additional ready /busy waits */ #define NAND_4PAGE_ARRAY 0x00000040 +/* Chip requires that BBT is periodically rewritten to prevent + * bits from adjacent blocks from 'leaking' in altering data. + * This happens with the Renesas AG-AND chips, possibly others. */ +#define BBT_AUTO_REFRESH 0x00000080 /* Options valid for Samsung large page devices */ #define NAND_SAMSUNG_LP_OPTIONS \ |