onenand_base.c File Reference

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/onenand.h>
#include <linux/mtd/partitions.h>
#include <asm/io.h>

Go to the source code of this file.

Macros
#define	MB_ERASE_MIN_BLK_COUNT   2
#define	MB_ERASE_MAX_BLK_COUNT   64
#define	onenand_verify(...)   (0)
#define	onenand_verify_oob(...)   (0)
#define	NOTALIGNED(x)   ((x & (this->subpagesize - 1)) != 0)

Functions
	module_param_array (flex_bdry, int, NULL, 0400)
	MODULE_PARM_DESC (flex_bdry,"SLC Boundary information for Flex-OneNAND""Syntax:flex_bdry=DIE_BDRY,LOCK,...""DIE_BDRY: SLC boundary of the die""LOCK: Locking information for SLC boundary"" : 0->Set boundary in unlocked status"" : 1->Set boundary in locked status")
	module_param (otp, int, 0400)
	MODULE_PARM_DESC (otp,"Corresponding behaviour of OneNAND in OTP""Syntax : otp=LOCK_TYPE""LOCK_TYPE : Keys issued, for specific OTP Lock type"" : 0 -> Default (No Blocks Locked)"" : 1 -> OTP Block lock"" : 2 -> 1st Block lock"" : 3 -> BOTH OTP Block and 1st Block lock")
unsigned	onenand_block (struct onenand_chip *this, loff_t addr)
loff_t	onenand_addr (struct onenand_chip *this, int block)
	EXPORT_SYMBOL (onenand_addr)
int	flexonenand_region (struct mtd_info *mtd, loff_t addr)
	EXPORT_SYMBOL (flexonenand_region)
int	onenand_bbt_read_oob (struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops)
int	onenand_scan (struct mtd_info *mtd, int maxchips)
void	onenand_release (struct mtd_info *mtd)
	EXPORT_SYMBOL_GPL (onenand_scan)
	EXPORT_SYMBOL_GPL (onenand_release)
	MODULE_LICENSE ("GPL")
	MODULE_AUTHOR ("Kyungmin Park <[email protected]>")
	MODULE_DESCRIPTION ("Generic OneNAND flash driver code")

Macro Definition Documentation

#define MB_ERASE_MAX_BLK_COUNT   64

Definition at line 43 of file onenand_base.c.

#define MB_ERASE_MIN_BLK_COUNT   2

Definition at line 42 of file onenand_base.c.

#define NOTALIGNED

(

x

)

((x & (this->subpagesize - 1)) != 0)

Definition at line 1715 of file onenand_base.c.

#define onenand_verify

(

...

)

(0)

Definition at line 1711 of file onenand_base.c.

#define onenand_verify_oob

(

...

)

(0)

Definition at line 1712 of file onenand_base.c.

Function Documentation

EXPORT_SYMBOL

(

onenand_addr

)

EXPORT_SYMBOL

(

flexonenand_region

)

EXPORT_SYMBOL_GPL

(

onenand_scan

)

EXPORT_SYMBOL_GPL

(

onenand_release

)

int flexonenand_region	(	struct mtd_info *	mtd,
		loff_t	addr
	)

flexonenand_region - [Flex-OneNAND] Return erase region of addr

Parameters

mtd	MTD device structure
addr	address whose erase region needs to be identified

Definition at line 350 of file onenand_base.c.

MODULE_AUTHOR

(

"Kyungmin Park <[email protected]>"

)

MODULE_DESCRIPTION

(

"Generic OneNAND flash driver code"

)

MODULE_LICENSE

(

"GPL"

)

module_param	(	otp	,
		int	,
		0400
	)

module_param_array	(	flex_bdry	,
		int	,
		NULL	,
		0400
	)

MODULE_PARM_DESC	(	flex_bdry	,
		"SLC Boundary information for Flex-OneNAND""Syntax:flex_bdry	= DIE_BDRY,
		LOCK	,
		...""DIE_BDRY:SLC boundary of the die""LOCK:Locking information for SLC boundary"":0->Set boundary in unlocked status"":1->Set boundary in locked status"
	)

MODULE_PARM_DESC	(	otp	,
		"Corresponding behaviour of OneNAND in OTP""Syntax :	otp = LOCK_TYPE""LOCK_TYPE : Keys issued,
		for specific OTP Lock type"":0-> Default(No Blocks Locked)"":1-> OTP Block lock"":2-> 1st Block lock"":3-> BOTH OTP Block and 1st Block lock"
	)

loff_t onenand_addr	(	struct onenand_chip *	this,
		int	block
	)

Definition at line 325 of file onenand_base.c.

int onenand_bbt_read_oob	(	struct mtd_info *	mtd,
		loff_t	from,
		struct mtd_oob_ops *	ops
	)

onenand_bbt_read_oob - [MTD Interface] OneNAND read out-of-band for bbt scan

Parameters

mtd	MTD device structure
from	offset to read from
ops	oob operation description structure

OneNAND read out-of-band data from the spare area for bbt scan

Definition at line 1572 of file onenand_base.c.

unsigned onenand_block ( struct onenand_chip *  this, loff_t  addr  )

inline

Definition at line 293 of file onenand_base.c.

void onenand_release

(

struct mtd_info *

mtd

)

onenand_release - [OneNAND Interface] Free resources held by the OneNAND device

Parameters

mtd	MTD device structure

Definition at line 4134 of file onenand_base.c.

int onenand_scan	(	struct mtd_info *	mtd,
		int	maxchips
	)

onenand_scan - [OneNAND Interface] Scan for the OneNAND device

Parameters

mtd	MTD device structure
maxchips	Number of chips to scan for

This fills out all the not initialized function pointers with the defaults. The flash ID is read and the mtd/chip structures are filled with the appropriate values.

Definition at line 3959 of file onenand_base.c.