diff options
Diffstat (limited to 'include/linux/mtd/nand.h')
| -rw-r--r-- | include/linux/mtd/nand.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 4cc4a7d1bb..79d670d349 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -109,6 +109,26 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_ /* Extended commands for large page devices */ #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 @@ -135,6 +155,18 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_ #define NAND_ECC_HW8_512 6 /* Hardware ECC 12 byte ECC per 2048 Byte data */ #define NAND_ECC_HW12_2048 7 +/* Hardware ECC 10 byte ECC per 512 Byte data */ +#define NAND_ECC_HW10_512 8 + +struct page_layout_item { + int length; + enum { + ITEM_TYPE_DATA, + ITEM_TYPE_OOB, + ITEM_TYPE_ECC, + } type; +}; + /* * Constants for Hardware ECC @@ -145,6 +177,14 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_ #define NAND_ECC_WRITE 1 /* Enable Hardware ECC before syndrom is read back from flash */ #define NAND_ECC_READSYN 2 +#define NAND_ECC_WRITESYN 3 +#define NAND_ECC_READOOB 4 +#define NAND_ECC_WRITEOOB 5 + +/* Bit mask for flags passed to do_nand_read_ecc */ +#define NAND_GET_DEVICE 0x80 + + /* Option constants for bizarre disfunctionality and real * features @@ -165,6 +205,10 @@ 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 \ @@ -187,6 +231,12 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_ * This can only work if we have the ecc bytes directly behind the * data bytes. Applies for DOC and AG-AND Renesas HW Reed Solomon generators */ #define NAND_HWECC_SYNDROME 0x00020000 +/* This option skips the bbt scan during initialization. */ +#define NAND_SKIP_BBTSCAN 0x00040000 +/* This option specifies that a whole NAND page is to be written in + * nand_write_oob. This is needed for some HW ECC generators that need a + * whole page to be written to generate ECC properly */ +#define NAND_COMPLEX_OOB_WRITE 0x00080000 /* Options set by nand scan */ @@ -207,6 +257,7 @@ typedef enum { FL_ERASING, FL_SYNCING, FL_CACHEDPRG, + FL_PM_SUSPENDED, } nand_state_t; /* Keep gcc happy */ @@ -331,12 +382,16 @@ struct nand_chip { int pagemask; int pagebuf; struct nand_oobinfo *autooob; + struct page_layout_item *layout; + int layout_allocated; uint8_t *bbt; struct nand_bbt_descr *bbt_td; struct nand_bbt_descr *bbt_md; 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); + }; /* @@ -348,6 +403,7 @@ struct nand_chip { #define NAND_MFR_NATIONAL 0x8f #define NAND_MFR_RENESAS 0x07 #define NAND_MFR_STMICRO 0x20 +#define NAND_MFR_HYNIX 0xad #define NAND_MFR_MICRON 0x2c /** @@ -459,6 +515,10 @@ 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 |