/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright ( C ) 2005 , Intec Automation Inc .
* Copyright ( C ) 2014 , Freescale Semiconductor , Inc .
*/
#ifndef __LINUX_MTD_SPI_NOR_INTERNAL_H
#define __LINUX_MTD_SPI_NOR_INTERNAL_H
#include "sfdp.h"
#define SPI_NOR_MAX_ID_LEN 6
/*
* 256 bytes is a sane default for most older flashes . Newer flashes will
* have the page size defined within their SFDP tables .
*/
#define SPI_NOR_DEFAULT_PAGE_SIZE 256
#define SPI_NOR_DEFAULT_N_BANKS 1
#define SPI_NOR_DEFAULT_SECTOR_SIZE SZ_64K
/* Standard SPI NOR flash operations. */
#define SPI_NOR_READID_OP(naddr, ndummy, buf, len) \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDID, 0 ), \
SPI_MEM_OP_ADDR(naddr, 0 , 0 ), \
SPI_MEM_OP_DUMMY(ndummy, 0 ), \
SPI_MEM_OP_DATA_IN(len, buf, 0 ))
#define SPI_NOR_WREN_OP \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WREN, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_NO_DATA)
#define SPI_NOR_WRDI_OP \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRDI, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_NO_DATA)
#define SPI_NOR_RDSR_OP(buf) \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDSR, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_DATA_IN(1 , buf, 0 ))
#define SPI_NOR_WRSR_OP(buf, len) \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRSR, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_DATA_OUT(len, buf, 0 ))
#define SPI_NOR_RDSR2_OP(buf) \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDSR2, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_DATA_OUT(1 , buf, 0 ))
#define SPI_NOR_WRSR2_OP(buf) \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRSR2, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_DATA_OUT(1 , buf, 0 ))
#define SPI_NOR_RDCR_OP(buf) \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDCR, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_DATA_IN(1 , buf, 0 ))
#define SPI_NOR_EN4B_EX4B_OP(enable) \
SPI_MEM_OP(SPI_MEM_OP_CMD(enable ? SPINOR_OP_EN4B : SPINOR_OP_EX4B, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_NO_DATA)
#define SPI_NOR_BRWR_OP(buf) \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_BRWR, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_DATA_OUT(1 , buf, 0 ))
#define SPI_NOR_GBULK_OP \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_GBULK, 0 ), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_NO_DATA)
#define SPI_NOR_DIE_ERASE_OP(opcode, addr_nbytes, addr, dice) \
SPI_MEM_OP(SPI_MEM_OP_CMD(opcode, 0 ), \
SPI_MEM_OP_ADDR(dice ? addr_nbytes : 0 , addr, 0 ), \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_NO_DATA)
#define SPI_NOR_SECTOR_ERASE_OP(opcode, addr_nbytes, addr) \
SPI_MEM_OP(SPI_MEM_OP_CMD(opcode, 0 ), \
SPI_MEM_OP_ADDR(addr_nbytes, addr, 0 ), \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_NO_DATA)
#define SPI_NOR_READ_OP(opcode) \
SPI_MEM_OP(SPI_MEM_OP_CMD(opcode, 0 ), \
SPI_MEM_OP_ADDR(3 , 0 , 0 ), \
SPI_MEM_OP_DUMMY(1 , 0 ), \
SPI_MEM_OP_DATA_IN(2 , NULL, 0 ))
#define SPI_NOR_PP_OP(opcode) \
SPI_MEM_OP(SPI_MEM_OP_CMD(opcode, 0 ), \
SPI_MEM_OP_ADDR(3 , 0 , 0 ), \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_DATA_OUT(2 , NULL, 0 ))
#define SPINOR_SRSTEN_OP \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_SRSTEN, 0 ), \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DATA)
#define SPINOR_SRST_OP \
SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_SRST, 0 ), \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DATA)
/* Keep these in sync with the list in debugfs.c */
enum spi_nor_option_flags {
SNOR_F_HAS_SR_TB = BIT(0 ),
SNOR_F_NO_OP_CHIP_ERASE = BIT(1 ),
SNOR_F_BROKEN_RESET = BIT(2 ),
SNOR_F_4B_OPCODES = BIT(3 ),
SNOR_F_HAS_4BAIT = BIT(4 ),
SNOR_F_HAS_LOCK = BIT(5 ),
SNOR_F_HAS_16BIT_SR = BIT(6 ),
SNOR_F_NO_READ_CR = BIT(7 ),
SNOR_F_HAS_SR_TB_BIT6 = BIT(8 ),
SNOR_F_HAS_4BIT_BP = BIT(9 ),
SNOR_F_HAS_SR_BP3_BIT6 = BIT(10 ),
SNOR_F_IO_MODE_EN_VOLATILE = BIT(11 ),
SNOR_F_SOFT_RESET = BIT(12 ),
SNOR_F_SWP_IS_VOLATILE = BIT(13 ),
SNOR_F_RWW = BIT(14 ),
SNOR_F_ECC = BIT(15 ),
SNOR_F_NO_WP = BIT(16 ),
SNOR_F_SWAP16 = BIT(17 ),
};
struct spi_nor_read_command {
u8 num_mode_clocks;
u8 num_wait_states;
u8 opcode;
enum spi_nor_protocol proto;
};
struct spi_nor_pp_command {
u8 opcode;
enum spi_nor_protocol proto;
};
enum spi_nor_read_command_index {
SNOR_CMD_READ,
SNOR_CMD_READ_FAST,
SNOR_CMD_READ_1_1_1_DTR,
/* Dual SPI */
SNOR_CMD_READ_1_1_2,
SNOR_CMD_READ_1_2_2,
SNOR_CMD_READ_2_2_2,
SNOR_CMD_READ_1_2_2_DTR,
/* Quad SPI */
SNOR_CMD_READ_1_1_4,
SNOR_CMD_READ_1_4_4,
SNOR_CMD_READ_4_4_4,
SNOR_CMD_READ_1_4_4_DTR,
/* Octal SPI */
SNOR_CMD_READ_1_1_8,
SNOR_CMD_READ_1_8_8,
SNOR_CMD_READ_8_8_8,
SNOR_CMD_READ_1_8_8_DTR,
SNOR_CMD_READ_8_8_8_DTR,
SNOR_CMD_READ_MAX
};
enum spi_nor_pp_command_index {
SNOR_CMD_PP,
/* Quad SPI */
SNOR_CMD_PP_1_1_4,
SNOR_CMD_PP_1_4_4,
SNOR_CMD_PP_4_4_4,
/* Octal SPI */
SNOR_CMD_PP_1_1_8,
SNOR_CMD_PP_1_8_8,
SNOR_CMD_PP_8_8_8,
SNOR_CMD_PP_8_8_8_DTR,
SNOR_CMD_PP_MAX
};
/**
* struct spi_nor_erase_type - Structure to describe a SPI NOR erase type
* @ size : the size of the sector / block erased by the erase type .
* JEDEC JESD216B imposes erase sizes to be a power of 2 .
* @ size_shift : @ size is a power of 2 , the shift is stored in
* @ size_shift .
* @ size_mask : the size mask based on @ size_shift .
* @ opcode : the SPI command op code to erase the sector / block .
* @ idx : Erase Type index as sorted in the Basic Flash Parameter
* Table . It will be used to synchronize the supported
* Erase Types with the ones identified in the SFDP
* optional tables .
*/
struct spi_nor_erase_type {
u32 size;
u32 size_shift;
u32 size_mask;
u8 opcode;
u8 idx;
};
/**
* struct spi_nor_erase_command - Used for non - uniform erases
* The structure is used to describe a list of erase commands to be executed
* once we validate that the erase can be performed . The elements in the list
* are run - length encoded .
* @ list : for inclusion into the list of erase commands .
* @ count : how many times the same erase command should be
* consecutively used .
* @ size : the size of the sector / block erased by the command .
* @ opcode : the SPI command op code to erase the sector / block .
*/
struct spi_nor_erase_command {
struct list_head list;
u32 count;
u32 size;
u8 opcode;
};
/**
* struct spi_nor_erase_region - Structure to describe a SPI NOR erase region
* @ offset : the offset in the data array of erase region start .
* @ size : the size of the region in bytes .
* @ erase_mask : bitmask to indicate all the supported erase commands
* inside this region . The erase types are sorted in
* ascending order with the smallest Erase Type size being
* at BIT ( 0 ) .
* @ overlaid : determine if this region is overlaid .
*/
struct spi_nor_erase_region {
u64 offset;
u64 size;
u8 erase_mask;
bool overlaid;
};
#define SNOR_ERASE_TYPE_MAX 4
/**
* struct spi_nor_erase_map - Structure to describe the SPI NOR erase map
* @ regions : array of erase regions . The regions are consecutive in
* address space . Walking through the regions is done
* incrementally .
* @ uniform_region : a pre - allocated erase region for SPI NOR with a uniform
* sector size ( legacy implementation ) .
* @ erase_type : an array of erase types shared by all the regions .
* The erase types are sorted in ascending order , with the
* smallest Erase Type size being the first member in the
* erase_type array .
* @ n_regions : number of erase regions .
*/
struct spi_nor_erase_map {
struct spi_nor_erase_region *regions;
struct spi_nor_erase_region uniform_region;
struct spi_nor_erase_type erase_type[SNOR_ERASE_TYPE_MAX];
unsigned int n_regions;
};
/**
* struct spi_nor_locking_ops - SPI NOR locking methods
* @ lock : lock a region of the SPI NOR .
* @ unlock : unlock a region of the SPI NOR .
* @ is_locked : check if a region of the SPI NOR is completely locked
*/
struct spi_nor_locking_ops {
int (*lock)(struct spi_nor *nor, loff_t ofs, u64 len);
int (*unlock)(struct spi_nor *nor, loff_t ofs, u64 len);
int (*is_locked)(struct spi_nor *nor, loff_t ofs, u64 len);
};
/**
* struct spi_nor_otp_organization - Structure to describe the SPI NOR OTP regions
* @ len : size of one OTP region in bytes .
* @ base : start address of the OTP area .
* @ offset : offset between consecutive OTP regions if there are more
* than one .
* @ n_regions : number of individual OTP regions .
*/
struct spi_nor_otp_organization {
size_t len;
loff_t base;
loff_t offset;
unsigned int n_regions;
};
/**
* struct spi_nor_otp_ops - SPI NOR OTP methods
* @ read : read from the SPI NOR OTP area .
* @ write : write to the SPI NOR OTP area .
* @ lock : lock an OTP region .
* @ erase : erase an OTP region .
* @ is_locked : check if an OTP region of the SPI NOR is locked .
*/
struct spi_nor_otp_ops {
int (*read)(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf);
int (*write)(struct spi_nor *nor, loff_t addr, size_t len,
const u8 *buf);
int (*lock)(struct spi_nor *nor, unsigned int region);
int (*erase)(struct spi_nor *nor, loff_t addr);
int (*is_locked)(struct spi_nor *nor, unsigned int region);
};
/**
* struct spi_nor_otp - SPI NOR OTP grouping structure
* @ org : OTP region organization
* @ ops : OTP access ops
*/
struct spi_nor_otp {
const struct spi_nor_otp_organization *org;
const struct spi_nor_otp_ops *ops;
};
/**
* struct spi_nor_flash_parameter - SPI NOR flash parameters and settings .
* Includes legacy flash parameters and settings that can be overwritten
* by the spi_nor_fixups hooks , or dynamically when parsing the JESD216
* Serial Flash Discoverable Parameters ( SFDP ) tables .
*
* @ bank_size : the flash memory bank density in bytes .
* @ size : the total flash memory density in bytes .
* @ writesize Minimal writable flash unit size . Defaults to 1 . Set to
* ECC unit size for ECC - ed flashes .
* @ page_size : the page size of the SPI NOR flash memory .
* @ addr_nbytes : number of address bytes to send .
* @ addr_mode_nbytes : number of address bytes of current address mode . Useful
* when the flash operates with 4 B opcodes but needs the
* internal address mode for opcodes that don ' t have a 4 B
* opcode correspondent .
* @ rdsr_dummy : dummy cycles needed for Read Status Register command
* in octal DTR mode .
* @ rdsr_addr_nbytes : dummy address bytes needed for Read Status Register
* command in octal DTR mode .
* @ n_banks : number of banks .
* @ n_dice : number of dice in the flash memory .
* @ die_erase_opcode : die erase opcode . Defaults to SPINOR_OP_CHIP_ERASE .
* @ vreg_offset : volatile register offset for each die .
* @ hwcaps : describes the read and page program hardware
* capabilities .
* @ reads : read capabilities ordered by priority : the higher index
* in the array , the higher priority .
* @ page_programs : page program capabilities ordered by priority : the
* higher index in the array , the higher priority .
* @ erase_map : the erase map parsed from the SFDP Sector Map Parameter
* Table .
* @ otp : SPI NOR OTP info .
* @ set_octal_dtr : enables or disables SPI NOR octal DTR mode .
* @ quad_enable : enables SPI NOR quad mode .
* @ set_4byte_addr_mode : puts the SPI NOR in 4 byte addressing mode .
* @ ready : ( optional ) flashes might use a different mechanism
* than reading the status register to indicate they
* are ready for a new command
* @ locking_ops : SPI NOR locking methods .
* @ priv : flash ' s private data .
*/
struct spi_nor_flash_parameter {
u64 bank_size;
u64 size;
u32 writesize;
u32 page_size;
u8 addr_nbytes;
u8 addr_mode_nbytes;
u8 rdsr_dummy;
u8 rdsr_addr_nbytes;
u8 n_banks;
u8 n_dice;
u8 die_erase_opcode;
u32 *vreg_offset;
struct spi_nor_hwcaps hwcaps;
struct spi_nor_read_command reads[SNOR_CMD_READ_MAX];
struct spi_nor_pp_command page_programs[SNOR_CMD_PP_MAX];
struct spi_nor_erase_map erase_map;
struct spi_nor_otp otp;
int (*set_octal_dtr)(struct spi_nor *nor, bool enable);
int (*quad_enable)(struct spi_nor *nor);
int (*set_4byte_addr_mode)(struct spi_nor *nor, bool enable);
int (*ready)(struct spi_nor *nor);
const struct spi_nor_locking_ops *locking_ops;
void *priv;
};
/**
* struct spi_nor_fixups - SPI NOR fixup hooks
* @ default_init : called after default flash parameters init . Used to tweak
* flash parameters when information provided by the flash_info
* table is incomplete or wrong .
* @ post_bfpt : called after the BFPT table has been parsed
* @ post_sfdp : called after SFDP has been parsed ( is also called for SPI NORs
* that do not support RDSFDP ) . Typically used to tweak various
* parameters that could not be extracted by other means ( i . e .
* when information provided by the SFDP / flash_info tables are
* incomplete or wrong ) .
* @ late_init : used to initialize flash parameters that are not declared in the
* JESD216 SFDP standard , or where SFDP tables not defined at all .
* Will replace the default_init ( ) hook .
*
* Those hooks can be used to tweak the SPI NOR configuration when the SFDP
* table is broken or not available .
*/
struct spi_nor_fixups {
void (*default_init)(struct spi_nor *nor);
int (*post_bfpt)(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt);
int (*post_sfdp)(struct spi_nor *nor);
int (*late_init)(struct spi_nor *nor);
};
/**
* struct spi_nor_id - SPI NOR flash ID .
*
* @ bytes : the bytes returned by the flash when issuing command 9 F . Typically ,
* the first byte is the manufacturer ID code ( see JEP106 ) and the next
* two bytes are a flash part specific ID .
* @ len : the number of bytes of ID .
*/
struct spi_nor_id {
const u8 *bytes;
u8 len;
};
/**
* struct flash_info - SPI NOR flash_info entry .
* @ id : pointer to struct spi_nor_id or NULL , which means " no ID " ( mostly
* older chips ) .
* @ name : ( obsolete ) the name of the flash . Do not set it for new additions .
* @ size : the size of the flash in bytes . The flash size is one
* property parsed by the SFDP . We use it as an indicator
* whether we need SFDP parsing for a particular flash .
* I . e . non - legacy flash entries in flash_info will have
* a size of zero iff SFDP should be used .
* @ sector_size : ( optional ) the size listed here is what works with
* SPINOR_OP_SE , which isn ' t necessarily called a " sector " by
* the vendor . Defaults to 64 k .
* @ n_banks : ( optional ) the number of banks . Defaults to 1 .
* @ page_size : ( optional ) the flash ' s page size . Defaults to 256 .
* @ addr_nbytes : number of address bytes to send .
*
* @ flags : flags that indicate support that is not defined by the
* JESD216 standard in its SFDP tables . Flag meanings :
* SPI_NOR_HAS_LOCK : flash supports lock / unlock via SR
* SPI_NOR_HAS_TB : flash SR has Top / Bottom ( TB ) protect bit . Must be
* used with SPI_NOR_HAS_LOCK .
* SPI_NOR_TB_SR_BIT6 : Top / Bottom ( TB ) is bit 6 of status register .
* Must be used with SPI_NOR_HAS_TB .
* SPI_NOR_4BIT_BP : flash SR has 4 bit fields ( BP0 - 3 ) for block
* protection .
* SPI_NOR_BP3_SR_BIT6 : BP3 is bit 6 of status register . Must be used with
* SPI_NOR_4BIT_BP .
* SPI_NOR_SWP_IS_VOLATILE : flash has volatile software write protection bits .
* Usually these will power - up in a write - protected
* state .
* SPI_NOR_NO_ERASE : no erase command needed .
* SPI_NOR_QUAD_PP : flash supports Quad Input Page Program .
* SPI_NOR_RWW : flash supports reads while write .
*
* @ no_sfdp_flags : flags that indicate support that can be discovered via SFDP .
* Used when SFDP tables are not defined in the flash . These
* flags are used together with the SPI_NOR_SKIP_SFDP flag .
* SPI_NOR_SKIP_SFDP : skip parsing of SFDP tables .
* SECT_4K : SPINOR_OP_BE_4K works uniformly .
* SPI_NOR_DUAL_READ : flash supports Dual Read .
* SPI_NOR_QUAD_READ : flash supports Quad Read .
* SPI_NOR_OCTAL_READ : flash supports Octal Read .
* SPI_NOR_OCTAL_DTR_READ : flash supports octal DTR Read .
* SPI_NOR_OCTAL_DTR_PP : flash supports Octal DTR Page Program .
*
* @ fixup_flags : flags that indicate support that can be discovered via SFDP
* ideally , but can not be discovered for this particular flash
* because the SFDP table that indicates this support is not
* defined by the flash . In case the table for this support is
* defined but has wrong values , one should instead use a
* post_sfdp ( ) hook to set the SNOR_F equivalent flag .
*
* SPI_NOR_4B_OPCODES : use dedicated 4 byte address op codes to support
* memory size above 128 Mib .
* SPI_NOR_IO_MODE_EN_VOLATILE : flash enables the best available I / O mode
* via a volatile bit .
* @ mfr_flags : manufacturer private flags . Used in the manufacturer fixup
* hooks to differentiate support between flashes of the same
* manufacturer .
* @ otp_org : flash ' s OTP organization .
* @ fixups : part specific fixup hooks .
*/
struct flash_info {
char *name;
const struct spi_nor_id *id;
size_t size;
unsigned sector_size;
u16 page_size;
u8 n_banks;
u8 addr_nbytes;
u16 flags;
#define SPI_NOR_HAS_LOCK BIT(0 )
#define SPI_NOR_HAS_TB BIT(1 )
#define SPI_NOR_TB_SR_BIT6 BIT(2 )
#define SPI_NOR_4BIT_BP BIT(3 )
#define SPI_NOR_BP3_SR_BIT6 BIT(4 )
#define SPI_NOR_SWP_IS_VOLATILE BIT(5 )
#define SPI_NOR_NO_ERASE BIT(6 )
#define SPI_NOR_QUAD_PP BIT(8 )
#define SPI_NOR_RWW BIT(9 )
u8 no_sfdp_flags;
#define SPI_NOR_SKIP_SFDP BIT(0 )
#define SECT_4K BIT(1 )
#define SPI_NOR_DUAL_READ BIT(3 )
#define SPI_NOR_QUAD_READ BIT(4 )
#define SPI_NOR_OCTAL_READ BIT(5 )
#define SPI_NOR_OCTAL_DTR_READ BIT(6 )
#define SPI_NOR_OCTAL_DTR_PP BIT(7 )
u8 fixup_flags;
#define SPI_NOR_4B_OPCODES BIT(0 )
#define SPI_NOR_IO_MODE_EN_VOLATILE BIT(1 )
u8 mfr_flags;
const struct spi_nor_otp_organization *otp;
const struct spi_nor_fixups *fixups;
};
#define SNOR_ID(...) \
(&(const struct spi_nor_id){ \
.bytes = (const u8[]){ __VA_ARGS__ }, \
.len = sizeof ((u8[]){ __VA_ARGS__ }), \
})
#define SNOR_OTP(_len, _n_regions, _base, _offset) \
(&(const struct spi_nor_otp_organization){ \
.len = (_len), \
.base = (_base), \
.offset = (_offset), \
.n_regions = (_n_regions), \
})
/**
* struct spi_nor_manufacturer - SPI NOR manufacturer object
* @ name : manufacturer name
* @ parts : array of parts supported by this manufacturer
* @ nparts : number of entries in the parts array
* @ fixups : hooks called at various points in time during spi_nor_scan ( )
*/
struct spi_nor_manufacturer {
const char *name;
const struct flash_info *parts;
unsigned int nparts;
const struct spi_nor_fixups *fixups;
};
/**
* struct sfdp - SFDP data
* @ num_dwords : number of entries in the dwords array
* @ dwords : array of double words of the SFDP data
*/
struct sfdp {
size_t num_dwords;
u32 *dwords;
};
/* Manufacturer drivers. */
extern const struct spi_nor_manufacturer spi_nor_atmel;
extern const struct spi_nor_manufacturer spi_nor_eon;
extern const struct spi_nor_manufacturer spi_nor_esmt;
extern const struct spi_nor_manufacturer spi_nor_everspin;
extern const struct spi_nor_manufacturer spi_nor_gigadevice;
extern const struct spi_nor_manufacturer spi_nor_intel;
extern const struct spi_nor_manufacturer spi_nor_issi;
extern const struct spi_nor_manufacturer spi_nor_macronix;
extern const struct spi_nor_manufacturer spi_nor_micron;
extern const struct spi_nor_manufacturer spi_nor_st;
extern const struct spi_nor_manufacturer spi_nor_spansion;
extern const struct spi_nor_manufacturer spi_nor_sst;
extern const struct spi_nor_manufacturer spi_nor_winbond;
extern const struct spi_nor_manufacturer spi_nor_xmc;
extern const struct attribute_group *spi_nor_sysfs_groups[];
void spi_nor_spimem_setup_op(const struct spi_nor *nor,
struct spi_mem_op *op,
const enum spi_nor_protocol proto);
int spi_nor_write_enable(struct spi_nor *nor);
int spi_nor_write_disable(struct spi_nor *nor);
int spi_nor_set_4byte_addr_mode_en4b_ex4b(struct spi_nor *nor, bool enable);
int spi_nor_set_4byte_addr_mode_wren_en4b_ex4b(struct spi_nor *nor,
bool enable);
int spi_nor_set_4byte_addr_mode_brwr(struct spi_nor *nor, bool enable);
int spi_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable);
int spi_nor_wait_till_ready(struct spi_nor *nor);
int spi_nor_global_block_unlock(struct spi_nor *nor);
int spi_nor_prep_and_lock(struct spi_nor *nor);
void spi_nor_unlock_and_unprep(struct spi_nor *nor);
int spi_nor_sr1_bit6_quad_enable(struct spi_nor *nor);
int spi_nor_sr2_bit1_quad_enable(struct spi_nor *nor);
int spi_nor_sr2_bit7_quad_enable(struct spi_nor *nor);
int spi_nor_read_id(struct spi_nor *nor, u8 naddr, u8 ndummy, u8 *id,
enum spi_nor_protocol reg_proto);
int spi_nor_read_sr(struct spi_nor *nor, u8 *sr);
int spi_nor_sr_ready(struct spi_nor *nor);
int spi_nor_read_cr(struct spi_nor *nor, u8 *cr);
int spi_nor_write_sr(struct spi_nor *nor, const u8 *sr, size_t len);
int spi_nor_write_sr_and_check(struct spi_nor *nor, u8 sr1);
int spi_nor_write_16bit_cr_and_check(struct spi_nor *nor, u8 cr);
ssize_t spi_nor_read_data(struct spi_nor *nor, loff_t from, size_t len,
u8 *buf);
ssize_t spi_nor_write_data(struct spi_nor *nor, loff_t to, size_t len,
const u8 *buf);
int spi_nor_read_any_reg(struct spi_nor *nor, struct spi_mem_op *op,
enum spi_nor_protocol proto);
int spi_nor_write_any_volatile_reg(struct spi_nor *nor, struct spi_mem_op *op,
enum spi_nor_protocol proto);
int spi_nor_erase_sector(struct spi_nor *nor, u32 addr);
int spi_nor_otp_read_secr(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf);
int spi_nor_otp_write_secr(struct spi_nor *nor, loff_t addr, size_t len,
const u8 *buf);
int spi_nor_otp_erase_secr(struct spi_nor *nor, loff_t addr);
int spi_nor_otp_lock_sr2(struct spi_nor *nor, unsigned int region);
int spi_nor_otp_is_locked_sr2(struct spi_nor *nor, unsigned int region);
int spi_nor_hwcaps_read2cmd(u32 hwcaps);
int spi_nor_hwcaps_pp2cmd(u32 hwcaps);
u8 spi_nor_convert_3to4_read(u8 opcode);
void spi_nor_set_read_settings(struct spi_nor_read_command *read,
u8 num_mode_clocks,
u8 num_wait_states,
u8 opcode,
enum spi_nor_protocol proto);
void spi_nor_set_pp_settings(struct spi_nor_pp_command *pp, u8 opcode,
enum spi_nor_protocol proto);
void spi_nor_set_erase_type(struct spi_nor_erase_type *erase, u32 size,
u8 opcode);
void spi_nor_mask_erase_type(struct spi_nor_erase_type *erase);
void spi_nor_init_uniform_erase_map(struct spi_nor_erase_map *map,
u8 erase_mask, u64 flash_size);
int spi_nor_post_bfpt_fixups(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt);
void spi_nor_init_default_locking_ops(struct spi_nor *nor);
void spi_nor_try_unlock_all(struct spi_nor *nor);
void spi_nor_set_mtd_locking_ops(struct spi_nor *nor);
void spi_nor_set_mtd_otp_ops(struct spi_nor *nor);
int spi_nor_controller_ops_read_reg(struct spi_nor *nor, u8 opcode,
u8 *buf, size_t len);
int spi_nor_controller_ops_write_reg(struct spi_nor *nor, u8 opcode,
const u8 *buf, size_t len);
int spi_nor_check_sfdp_signature(struct spi_nor *nor);
int spi_nor_parse_sfdp(struct spi_nor *nor);
static inline struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd)
{
return container_of(mtd, struct spi_nor, mtd);
}
/**
* spi_nor_needs_sfdp ( ) - returns true if SFDP parsing is used for this flash .
*
* Return : true if SFDP parsing is needed
*/
static inline bool spi_nor_needs_sfdp(const struct spi_nor *nor)
{
/*
* The flash size is one property parsed by the SFDP . We use it as an
* indicator whether we need SFDP parsing for a particular flash . I . e .
* non - legacy flash entries in flash_info will have a size of zero iff
* SFDP should be used .
*/
return !nor->info->size;
}
#ifdef CONFIG_DEBUG_FS
void spi_nor_debugfs_register(struct spi_nor *nor);
void spi_nor_debugfs_shutdown(void );
#else
static inline void spi_nor_debugfs_register(struct spi_nor *nor) {}
static inline void spi_nor_debugfs_shutdown(void ) {}
#endif
#endif /* __LINUX_MTD_SPI_NOR_INTERNAL_H */
Messung V0.5 in Prozent C=95 H=95 G=94
¤ Dauer der Verarbeitung: 0.18 Sekunden
(vorverarbeitet am 2026-09-29)
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