FM / mtd

/usr/src/linux-headers-5.15.0-181/include/linux/mtd/

/usr/src/linux-headers-5.15.0-181/include/linux/mtd

Name	Size	Mode	Actions
bbm.h	4825	0644	edit dl rm
blktrans.h	2682	0644	edit dl rm
cfi.h	10144	0644	edit dl rm
cfi_endian.h	1514	0644	edit dl rm
concat.h	493	0644	edit dl rm
doc2000.h	5505	0644	edit dl rm
flashchip.h	2478	0644	edit dl rm
ftl.h	2551	0644	edit dl rm
gen_probe.h	615	0644	edit dl rm
hyperbus.h	2893	0644	edit dl rm
inftl.h	1599	0644	edit dl rm
jedec.h	1905	0644	edit dl rm
latch-addr-flash.h	716	0644	edit dl rm
lpc32xx_mlc.h	385	0644	edit dl rm
lpc32xx_slc.h	385	0644	edit dl rm
map.h	13016	0644	edit dl rm
mtd.h	22569	0644	edit dl rm
mtdram.h	257	0644	edit dl rm
nand-ecc-sw-bch.h	2117	0644	edit dl rm
nand-ecc-sw-hamming.h	2717	0644	edit dl rm
nand-gpio.h	330	0644	edit dl rm
nand.h	30284	0644	edit dl rm
ndfc.h	2070	0644	edit dl rm
nftl.h	1734	0644	edit dl rm
onenand.h	7974	0644	edit dl rm
onenand_regs.h	7217	0644	edit dl rm
onfi.h	4962	0644	edit dl rm
partitions.h	3946	0644	edit dl rm
pfow.h	4489	0644	edit dl rm
physmap.h	808	0644	edit dl rm
pismo.h	271	0644	edit dl rm
plat-ram.h	668	0644	edit dl rm
platnand.h	2545	0644	edit dl rm
qinfo.h	2530	0644	edit dl rm
rawnand.h	52400	0644	edit dl rm
sharpsl.h	485	0644	edit dl rm
sh_flctl.h	5927	0644	edit dl rm
spear_smi.h	1714	0644	edit dl rm
spi-nor.h	17247	0644	edit dl rm
spinand.h	16220	0644	edit dl rm
super.h	578	0644	edit dl rm
ubi.h	9914	0644	edit dl rm
xip.h	2556	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/include/linux/mtd/onenand.h (7974B)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  linux/include/linux/mtd/onenand.h
 *
 *  Copyright © 2005-2009 Samsung Electronics
 *  Kyungmin Park <kyungmin.park@samsung.com>
 */

#ifndef __LINUX_MTD_ONENAND_H
#define __LINUX_MTD_ONENAND_H

#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/mtd/flashchip.h>
#include <linux/mtd/onenand_regs.h>
#include <linux/mtd/bbm.h>

#define MAX_DIES		2
#define MAX_BUFFERRAM		2

/* Scan and identify a OneNAND device */
extern int onenand_scan(struct mtd_info *mtd, int max_chips);
/* Free resources held by the OneNAND device */
extern void onenand_release(struct mtd_info *mtd);

/**
 * struct onenand_bufferram - OneNAND BufferRAM Data
 * @blockpage:		block & page address in BufferRAM
 */
struct onenand_bufferram {
	int	blockpage;
};

/**
 * struct onenand_chip - OneNAND Private Flash Chip Data
 * @base:		[BOARDSPECIFIC] address to access OneNAND
 * @dies:		[INTERN][FLEX-ONENAND] number of dies on chip
 * @boundary:		[INTERN][FLEX-ONENAND] Boundary of the dies
 * @diesize:		[INTERN][FLEX-ONENAND] Size of the dies
 * @chipsize:		[INTERN] the size of one chip for multichip arrays
 *			FIXME For Flex-OneNAND, chipsize holds maximum possible
 *			device size ie when all blocks are considered MLC
 * @device_id:		[INTERN] device ID
 * @density_mask:	chip density, used for DDP devices
 * @verstion_id:	[INTERN] version ID
 * @options:		[BOARDSPECIFIC] various chip options. They can
 *			partly be set to inform onenand_scan about
 * @erase_shift:	[INTERN] number of address bits in a block
 * @page_shift:		[INTERN] number of address bits in a page
 * @page_mask:		[INTERN] a page per block mask
 * @writesize:		[INTERN] a real page size
 * @bufferram_index:	[INTERN] BufferRAM index
 * @bufferram:		[INTERN] BufferRAM info
 * @readw:		[REPLACEABLE] hardware specific function for read short
 * @writew:		[REPLACEABLE] hardware specific function for write short
 * @command:		[REPLACEABLE] hardware specific function for writing
 *			commands to the chip
 * @wait:		[REPLACEABLE] hardware specific function for wait on ready
 * @bbt_wait:		[REPLACEABLE] hardware specific function for bbt wait on ready
 * @unlock_all:		[REPLACEABLE] hardware specific function for unlock all
 * @read_bufferram:	[REPLACEABLE] hardware specific function for BufferRAM Area
 * @write_bufferram:	[REPLACEABLE] hardware specific function for BufferRAM Area
 * @read_word:		[REPLACEABLE] hardware specific function for read
 *			register of OneNAND
 * @write_word:		[REPLACEABLE] hardware specific function for write
 *			register of OneNAND
 * @mmcontrol:		sync burst read function
 * @chip_probe:		[REPLACEABLE] hardware specific function for chip probe
 * @block_markbad:	function to mark a block as bad
 * @scan_bbt:		[REPLACEALBE] hardware specific function for scanning
 *			Bad block Table
 * @chip_lock:		[INTERN] spinlock used to protect access to this
 *			structure and the chip
 * @wq:			[INTERN] wait queue to sleep on if a OneNAND
 *			operation is in progress
 * @state:		[INTERN] the current state of the OneNAND device
 * @page_buf:		[INTERN] page main data buffer
 * @oob_buf:		[INTERN] page oob data buffer
 * @subpagesize:	[INTERN] holds the subpagesize
 * @bbm:		[REPLACEABLE] pointer to Bad Block Management
 * @priv:		[OPTIONAL] pointer to private chip date
 */
struct onenand_chip {
	void __iomem		*base;
	unsigned		dies;
	unsigned		boundary[MAX_DIES];
	loff_t			diesize[MAX_DIES];
	unsigned int		chipsize;
	unsigned int		device_id;
	unsigned int		version_id;
	unsigned int		technology;
	unsigned int		density_mask;
	unsigned int		options;
	unsigned int		badblockpos;

unsigned int		erase_shift;
	unsigned int		page_shift;
	unsigned int		page_mask;
	unsigned int		writesize;

unsigned int		bufferram_index;
	struct onenand_bufferram	bufferram[MAX_BUFFERRAM];

int (*command)(struct mtd_info *mtd, int cmd, loff_t address, size_t len);
	int (*wait)(struct mtd_info *mtd, int state);
	int (*bbt_wait)(struct mtd_info *mtd, int state);
	void (*unlock_all)(struct mtd_info *mtd);
	int (*read_bufferram)(struct mtd_info *mtd, int area,
			unsigned char *buffer, int offset, size_t count);
	int (*write_bufferram)(struct mtd_info *mtd, int area,
			const unsigned char *buffer, int offset, size_t count);
	unsigned short (*read_word)(void __iomem *addr);
	void (*write_word)(unsigned short value, void __iomem *addr);
	void (*mmcontrol)(struct mtd_info *mtd, int sync_read);
	int (*chip_probe)(struct mtd_info *mtd);
	int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
	int (*scan_bbt)(struct mtd_info *mtd);
	int (*enable)(struct mtd_info *mtd);
	int (*disable)(struct mtd_info *mtd);

struct completion	complete;
	int			irq;

spinlock_t		chip_lock;
	wait_queue_head_t	wq;
	flstate_t		state;
	unsigned char		*page_buf;
	unsigned char		*oob_buf;
#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
	unsigned char		*verify_buf;
#endif

int			subpagesize;

void			*bbm;

void			*priv;

/*
	 * Shows that the current operation is composed
	 * of sequence of commands. For example, cache program.
	 * Such command status OnGo bit is checked at the end of
	 * sequence.
	 */
	unsigned int		ongoing;
};

/*
 * Helper macros
 */
#define ONENAND_PAGES_PER_BLOCK        (1<<6)

#define ONENAND_CURRENT_BUFFERRAM(this)		(this->bufferram_index)
#define ONENAND_NEXT_BUFFERRAM(this)		(this->bufferram_index ^ 1)
#define ONENAND_SET_NEXT_BUFFERRAM(this)	(this->bufferram_index ^= 1)
#define ONENAND_SET_PREV_BUFFERRAM(this)	(this->bufferram_index ^= 1)
#define ONENAND_SET_BUFFERRAM0(this)		(this->bufferram_index = 0)
#define ONENAND_SET_BUFFERRAM1(this)		(this->bufferram_index = 1)

#define FLEXONENAND(this)						\
	(this->device_id & DEVICE_IS_FLEXONENAND)
#define ONENAND_GET_SYS_CFG1(this)					\
	(this->read_word(this->base + ONENAND_REG_SYS_CFG1))
#define ONENAND_SET_SYS_CFG1(v, this)					\
	(this->write_word(v, this->base + ONENAND_REG_SYS_CFG1))

#define ONENAND_IS_DDP(this)						\
	(this->device_id & ONENAND_DEVICE_IS_DDP)

#define ONENAND_IS_MLC(this)						\
	(this->technology & ONENAND_TECHNOLOGY_IS_MLC)

#ifdef CONFIG_MTD_ONENAND_2X_PROGRAM
#define ONENAND_IS_2PLANE(this)						\
	(this->options & ONENAND_HAS_2PLANE)
#else
#define ONENAND_IS_2PLANE(this)			(0)
#endif

#define ONENAND_IS_CACHE_PROGRAM(this)					\
	(this->options & ONENAND_HAS_CACHE_PROGRAM)

#define ONENAND_IS_NOP_1(this)						\
	(this->options & ONENAND_HAS_NOP_1)

/* Check byte access in OneNAND */
#define ONENAND_CHECK_BYTE_ACCESS(addr)		(addr & 0x1)

#define ONENAND_BADBLOCK_POS		0

/*
 * Options bits
 */
#define ONENAND_HAS_CONT_LOCK		(0x0001)
#define ONENAND_HAS_UNLOCK_ALL		(0x0002)
#define ONENAND_HAS_2PLANE		(0x0004)
#define ONENAND_HAS_4KB_PAGE		(0x0008)
#define ONENAND_HAS_CACHE_PROGRAM	(0x0010)
#define ONENAND_HAS_NOP_1		(0x0020)
#define ONENAND_SKIP_UNLOCK_CHECK	(0x0100)
#define ONENAND_PAGEBUF_ALLOC		(0x1000)
#define ONENAND_OOBBUF_ALLOC		(0x2000)
#define ONENAND_SKIP_INITIAL_UNLOCKING	(0x4000)

#define ONENAND_IS_4KB_PAGE(this)					\
	(this->options & ONENAND_HAS_4KB_PAGE)

/*
 * OneNAND Flash Manufacturer ID Codes
 */
#define ONENAND_MFR_SAMSUNG	0xec
#define ONENAND_MFR_NUMONYX	0x20

/**
 * struct onenand_manufacturers - NAND Flash Manufacturer ID Structure
 * @name:	Manufacturer name
 * @id:		manufacturer ID code of device.
*/
struct onenand_manufacturers {
        int id;
        char *name;
};

int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
			 struct mtd_oob_ops *ops);
unsigned onenand_block(struct onenand_chip *this, loff_t addr);
loff_t onenand_addr(struct onenand_chip *this, int block);
int flexonenand_region(struct mtd_info *mtd, loff_t addr);

struct mtd_partition;

struct onenand_platform_data {
	void		(*mmcontrol)(struct mtd_info *mtd, int sync_read);
	int		(*read_bufferram)(struct mtd_info *mtd, int area,
			unsigned char *buffer, int offset, size_t count);
	struct mtd_partition *parts;
	unsigned int	nr_parts;
};

#endif	/* __LINUX_MTD_ONENAND_H */

cmd: