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nand_do_read_oob(9) [centos man page]

NAND_DO_READ_OOB(9)					    Internal Functions Provided 				       NAND_DO_READ_OOB(9)

NAME
nand_do_read_oob - [INTERN] NAND read out-of-band SYNOPSIS
int nand_do_read_oob(struct mtd_info * mtd, loff_t from, struct mtd_oob_ops * ops); ARGUMENTS
mtd MTD device structure from offset to read from ops oob operations description structure DESCRIPTION
NAND read out-of-band data from the spare area. AUTHOR
Thomas Gleixner <tglx@linutronix.de> Author. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 NAND_DO_READ_OOB(9)

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STRUCT 
NAND_CHIP(9) Structures STRUCT NAND_CHIP(9) NAME
struct_nand_chip - NAND Private Flash Chip Data SYNOPSIS
struct nand_chip { void __iomem * IO_ADDR_R; void __iomem * IO_ADDR_W; uint8_t (* read_byte) (struct mtd_info *mtd); u16 (* read_word) (struct mtd_info *mtd); void (* write_buf) (struct mtd_info *mtd, const uint8_t *buf, int len); void (* read_buf) (struct mtd_info *mtd, uint8_t *buf, int len); int (* verify_buf) (struct mtd_info *mtd, const uint8_t *buf, int len); void (* select_chip) (struct mtd_info *mtd, int chip); int (* block_bad) (struct mtd_info *mtd, loff_t ofs, int getchip); int (* block_markbad) (struct mtd_info *mtd, loff_t ofs); void (* cmd_ctrl) (struct mtd_info *mtd, int dat,unsigned int ctrl); int (* dev_ready) (struct mtd_info *mtd); void (* cmdfunc) (struct mtd_info *mtd, unsigned command, int column, int page_addr); int (* waitfunc) (struct mtd_info *mtd, struct nand_chip *this); void (* erase_cmd) (struct mtd_info *mtd, int page); int (* scan_bbt) (struct mtd_info *mtd); int (* errstat) (struct mtd_info *mtd, struct nand_chip *this, int state, int status, int page); int (* write_page) (struct mtd_info *mtd, struct nand_chip *chip,const uint8_t *buf, int page, int cached, int raw); int chip_delay; unsigned int options; int page_shift; int phys_erase_shift; int bbt_erase_shift; int chip_shift; int numchips; uint64_t chipsize; int pagemask; int pagebuf; int subpagesize; uint8_t cellinfo; int badblockpos; flstate_t state; uint8_t * oob_poi; struct nand_hw_control * controller; struct nand_ecclayout * ecclayout; struct nand_ecc_ctrl ecc; struct nand_buffers * buffers; struct nand_hw_control hwcontrol; struct mtd_oob_ops ops; uint8_t * bbt; struct nand_bbt_descr * bbt_td; struct nand_bbt_descr * bbt_md; struct nand_bbt_descr * badblock_pattern; void * priv; }; MEMBERS
IO_ADDR_R [BOARDSPECIFIC] address to read the 8 I/O lines of the flash device IO_ADDR_W [BOARDSPECIFIC] address to write the 8 I/O lines of the flash device read_byte [REPLACEABLE] read one byte from the chip read_word [REPLACEABLE] read one word from the chip write_buf [REPLACEABLE] write data from the buffer to the chip read_buf [REPLACEABLE] read data from the chip into the buffer verify_buf [REPLACEABLE] verify buffer contents against the chip data select_chip [REPLACEABLE] select chip nr block_bad [REPLACEABLE] check, if the block is bad block_markbad [REPLACEABLE] mark the block bad cmd_ctrl [BOARDSPECIFIC] hardwarespecific funtion for controlling ALE/CLE/nCE. Also used to write command and address dev_ready [BOARDSPECIFIC] hardwarespecific function for accesing device ready/busy line If set to NULL no access to ready/busy is available and the ready/busy information is read from the chip status register cmdfunc [REPLACEABLE] hardwarespecific function for writing commands to the chip waitfunc [REPLACEABLE] hardwarespecific function for wait on ready erase_cmd [INTERN] erase command write function, selectable due to AND support scan_bbt [REPLACEABLE] function to scan bad block table errstat [OPTIONAL] hardware specific function to perform additional error status checks (determine if errors are correctable) write_page [REPLACEABLE] High-level page write function chip_delay [BOARDSPECIFIC] chip dependent delay for transfering data from array to read regs (tR) options [BOARDSPECIFIC] various chip options. They can partly be set to inform nand_scan about special functionality. See the defines for further explanation page_shift [INTERN] number of address bits in a page (column address bits) phys_erase_shift [INTERN] number of address bits in a physical eraseblock bbt_erase_shift [INTERN] number of address bits in a bbt entry chip_shift [INTERN] number of address bits in one chip numchips [INTERN] number of physical chips chipsize [INTERN] the size of one chip for multichip arrays pagemask [INTERN] page number mask = number of (pages / chip) - 1 pagebuf [INTERN] holds the pagenumber which is currently in data_buf subpagesize [INTERN] holds the subpagesize cellinfo [INTERN] MLC/multichip data from chip ident badblockpos [INTERN] position of the bad block marker in the oob area state [INTERN] the current state of the NAND device oob_poi poison value buffer controller [REPLACEABLE] a pointer to a hardware controller structure which is shared among multiple independend devices ecclayout [REPLACEABLE] the default ecc placement scheme ecc [BOARDSPECIFIC] ecc control ctructure buffers buffer structure for read/write hwcontrol platform-specific hardware control structure ops oob operation operands bbt [INTERN] bad block table pointer bbt_td [REPLACEABLE] bad block table descriptor for flash lookup bbt_md [REPLACEABLE] bad block table mirror descriptor badblock_pattern [REPLACEABLE] bad block scan pattern used for initial bad block scan priv [OPTIONAL] pointer to private chip date AUTHOR
Thomas Gleixner <tglx@linutronix.de> Author. COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 STRUCT NAND_CHIP(9)

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