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| author | David A. Marlin <dmarlin@redhat.com> | 2005-01-24 03:07:46 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-05-23 12:08:59 +0200 |
| commit | 068e3c0a002c79a5e3cc7c42cb749c4bb126288c (patch) | |
| tree | fdf2db2edf03c4520a204476b0edc652ae2c9c47 /include/linux/mtd | |
| parent | 99f2a8aea18c9779c141050c6f95a8f1da63bbe4 (diff) | |
| download | kernel_samsung_smdk4412-068e3c0a002c79a5e3cc7c42cb749c4bb126288c.tar.gz kernel_samsung_smdk4412-068e3c0a002c79a5e3cc7c42cb749c4bb126288c.tar.bz2 kernel_samsung_smdk4412-068e3c0a002c79a5e3cc7c42cb749c4bb126288c.zip | |
[MTD] NAND Add optional ECC status check callback
Add optional hardware specific callback routine to perform extra error
status checks on erase and write failures for devices with hardware ECC.
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 | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 0118128ae38..cf52f20c6de 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 1.69 2005/01/17 18:29:18 dmarlin Exp $ + * $Id: nand.h,v 1.70 2005/01/24 03:07:42 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 @@ -50,6 +50,8 @@ * update of nand_chip structure description * 01-17-2005 dmarlin added extended commands for AG-AND device and added option * for BBT_AUTO_REFRESH. + * 01-20-2005 dmarlin added optional pointer to hardware specific callback for + * extra error status checks. */ #ifndef __LINUX_MTD_NAND_H #define __LINUX_MTD_NAND_H @@ -164,7 +166,7 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_ /* * Constants for Hardware ECC -*/ + */ /* Reset Hardware ECC for read */ #define NAND_ECC_READ 0 /* Reset Hardware ECC for write */ @@ -172,6 +174,10 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_ /* Enable Hardware ECC before syndrom is read back from flash */ #define NAND_ECC_READSYN 2 +/* Bit mask for flags passed to do_nand_read_ecc */ +#define NAND_GET_DEVICE 0x80 + + /* Option constants for bizarre disfunctionality and real * features */ @@ -308,6 +314,8 @@ struct nand_hw_control { * @badblock_pattern: [REPLACEABLE] bad block scan pattern used for initial bad block scan * @controller: [OPTIONAL] a pointer to a hardware controller structure which is shared among multiple independend devices * @priv: [OPTIONAL] pointer to private chip date + * @errstat: [OPTIONAL] hardware specific function to perform additional error status checks + * (determine if errors are correctable) */ struct nand_chip { @@ -363,6 +371,7 @@ struct nand_chip { struct nand_bbt_descr *badblock_pattern; struct nand_hw_control *controller; void *priv; + int (*errstat)(struct mtd_info *mtd, struct nand_chip *this, int state, int status, int page); }; /* @@ -484,6 +493,9 @@ extern int nand_update_bbt (struct mtd_info *mtd, loff_t offs); extern int nand_default_bbt (struct mtd_info *mtd); extern int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt); extern int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt); +extern int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, + size_t * retlen, u_char * buf, u_char * oob_buf, + struct nand_oobinfo *oobsel, int flags); /* * Constants for oob configuration |