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struct_nand_chip
Langue: en
Version: October 2010 (fedora - 01/12/10)
Section: 9 (Appels noyau Linux)
NAME
struct_nand_chip - NAND Private Flash Chip DataSYNOPSIS
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
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre