1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2005, Intec Automation Inc.
4 * Copyright (C) 2014, Freescale Semiconductor, Inc.
7 #ifndef __LINUX_MTD_SPI_NOR_INTERNAL_H
8 #define __LINUX_MTD_SPI_NOR_INTERNAL_H
12 #define SPI_NOR_MAX_ID_LEN 6
14 /* Standard SPI NOR flash operations. */
15 #define SPI_NOR_READID_OP(naddr, ndummy, buf, len) \
16 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDID, 0), \
17 SPI_MEM_OP_ADDR(naddr, 0, 0), \
18 SPI_MEM_OP_DUMMY(ndummy, 0), \
19 SPI_MEM_OP_DATA_IN(len, buf, 0))
21 #define SPI_NOR_WREN_OP \
22 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WREN, 0), \
24 SPI_MEM_OP_NO_DUMMY, \
27 #define SPI_NOR_WRDI_OP \
28 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRDI, 0), \
30 SPI_MEM_OP_NO_DUMMY, \
33 #define SPI_NOR_RDSR_OP(buf) \
34 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDSR, 0), \
36 SPI_MEM_OP_NO_DUMMY, \
37 SPI_MEM_OP_DATA_IN(1, buf, 0))
39 #define SPI_NOR_WRSR_OP(buf, len) \
40 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRSR, 0), \
42 SPI_MEM_OP_NO_DUMMY, \
43 SPI_MEM_OP_DATA_OUT(len, buf, 0))
45 #define SPI_NOR_RDSR2_OP(buf) \
46 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDSR2, 0), \
48 SPI_MEM_OP_NO_DUMMY, \
49 SPI_MEM_OP_DATA_OUT(1, buf, 0))
51 #define SPI_NOR_WRSR2_OP(buf) \
52 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRSR2, 0), \
54 SPI_MEM_OP_NO_DUMMY, \
55 SPI_MEM_OP_DATA_OUT(1, buf, 0))
57 #define SPI_NOR_RDCR_OP(buf) \
58 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDCR, 0), \
60 SPI_MEM_OP_NO_DUMMY, \
61 SPI_MEM_OP_DATA_IN(1, buf, 0))
63 #define SPI_NOR_EN4B_EX4B_OP(enable) \
64 SPI_MEM_OP(SPI_MEM_OP_CMD(enable ? SPINOR_OP_EN4B : SPINOR_OP_EX4B, 0), \
66 SPI_MEM_OP_NO_DUMMY, \
69 #define SPI_NOR_BRWR_OP(buf) \
70 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_BRWR, 0), \
72 SPI_MEM_OP_NO_DUMMY, \
73 SPI_MEM_OP_DATA_OUT(1, buf, 0))
75 #define SPI_NOR_GBULK_OP \
76 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_GBULK, 0), \
78 SPI_MEM_OP_NO_DUMMY, \
81 #define SPI_NOR_CHIP_ERASE_OP \
82 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CHIP_ERASE, 0), \
84 SPI_MEM_OP_NO_DUMMY, \
87 #define SPI_NOR_SECTOR_ERASE_OP(opcode, addr_nbytes, addr) \
88 SPI_MEM_OP(SPI_MEM_OP_CMD(opcode, 0), \
89 SPI_MEM_OP_ADDR(addr_nbytes, addr, 0), \
90 SPI_MEM_OP_NO_DUMMY, \
93 #define SPI_NOR_READ_OP(opcode) \
94 SPI_MEM_OP(SPI_MEM_OP_CMD(opcode, 0), \
95 SPI_MEM_OP_ADDR(3, 0, 0), \
96 SPI_MEM_OP_DUMMY(1, 0), \
97 SPI_MEM_OP_DATA_IN(2, NULL, 0))
99 #define SPI_NOR_PP_OP(opcode) \
100 SPI_MEM_OP(SPI_MEM_OP_CMD(opcode, 0), \
101 SPI_MEM_OP_ADDR(3, 0, 0), \
102 SPI_MEM_OP_NO_DUMMY, \
103 SPI_MEM_OP_DATA_OUT(2, NULL, 0))
105 #define SPINOR_SRSTEN_OP \
106 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_SRSTEN, 0), \
107 SPI_MEM_OP_NO_DUMMY, \
108 SPI_MEM_OP_NO_ADDR, \
111 #define SPINOR_SRST_OP \
112 SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_SRST, 0), \
113 SPI_MEM_OP_NO_DUMMY, \
114 SPI_MEM_OP_NO_ADDR, \
117 /* Keep these in sync with the list in debugfs.c */
118 enum spi_nor_option_flags {
119 SNOR_F_HAS_SR_TB = BIT(0),
120 SNOR_F_NO_OP_CHIP_ERASE = BIT(1),
121 SNOR_F_BROKEN_RESET = BIT(2),
122 SNOR_F_4B_OPCODES = BIT(3),
123 SNOR_F_HAS_4BAIT = BIT(4),
124 SNOR_F_HAS_LOCK = BIT(5),
125 SNOR_F_HAS_16BIT_SR = BIT(6),
126 SNOR_F_NO_READ_CR = BIT(7),
127 SNOR_F_HAS_SR_TB_BIT6 = BIT(8),
128 SNOR_F_HAS_4BIT_BP = BIT(9),
129 SNOR_F_HAS_SR_BP3_BIT6 = BIT(10),
130 SNOR_F_IO_MODE_EN_VOLATILE = BIT(11),
131 SNOR_F_SOFT_RESET = BIT(12),
132 SNOR_F_SWP_IS_VOLATILE = BIT(13),
133 SNOR_F_RWW = BIT(14),
134 SNOR_F_ECC = BIT(15),
137 struct spi_nor_read_command {
141 enum spi_nor_protocol proto;
144 struct spi_nor_pp_command {
146 enum spi_nor_protocol proto;
149 enum spi_nor_read_command_index {
152 SNOR_CMD_READ_1_1_1_DTR,
158 SNOR_CMD_READ_1_2_2_DTR,
164 SNOR_CMD_READ_1_4_4_DTR,
170 SNOR_CMD_READ_1_8_8_DTR,
171 SNOR_CMD_READ_8_8_8_DTR,
176 enum spi_nor_pp_command_index {
188 SNOR_CMD_PP_8_8_8_DTR,
194 * struct spi_nor_erase_type - Structure to describe a SPI NOR erase type
195 * @size: the size of the sector/block erased by the erase type.
196 * JEDEC JESD216B imposes erase sizes to be a power of 2.
197 * @size_shift: @size is a power of 2, the shift is stored in
199 * @size_mask: the size mask based on @size_shift.
200 * @opcode: the SPI command op code to erase the sector/block.
201 * @idx: Erase Type index as sorted in the Basic Flash Parameter
202 * Table. It will be used to synchronize the supported
203 * Erase Types with the ones identified in the SFDP
206 struct spi_nor_erase_type {
215 * struct spi_nor_erase_command - Used for non-uniform erases
216 * The structure is used to describe a list of erase commands to be executed
217 * once we validate that the erase can be performed. The elements in the list
218 * are run-length encoded.
219 * @list: for inclusion into the list of erase commands.
220 * @count: how many times the same erase command should be
221 * consecutively used.
222 * @size: the size of the sector/block erased by the command.
223 * @opcode: the SPI command op code to erase the sector/block.
225 struct spi_nor_erase_command {
226 struct list_head list;
233 * struct spi_nor_erase_region - Structure to describe a SPI NOR erase region
234 * @offset: the offset in the data array of erase region start.
235 * LSB bits are used as a bitmask encoding flags to
236 * determine if this region is overlaid, if this region is
237 * the last in the SPI NOR flash memory and to indicate
238 * all the supported erase commands inside this region.
239 * The erase types are sorted in ascending order with the
240 * smallest Erase Type size being at BIT(0).
241 * @size: the size of the region in bytes.
243 struct spi_nor_erase_region {
248 #define SNOR_ERASE_TYPE_MAX 4
249 #define SNOR_ERASE_TYPE_MASK GENMASK_ULL(SNOR_ERASE_TYPE_MAX - 1, 0)
251 #define SNOR_LAST_REGION BIT(4)
252 #define SNOR_OVERLAID_REGION BIT(5)
254 #define SNOR_ERASE_FLAGS_MAX 6
255 #define SNOR_ERASE_FLAGS_MASK GENMASK_ULL(SNOR_ERASE_FLAGS_MAX - 1, 0)
258 * struct spi_nor_erase_map - Structure to describe the SPI NOR erase map
259 * @regions: array of erase regions. The regions are consecutive in
260 * address space. Walking through the regions is done
262 * @uniform_region: a pre-allocated erase region for SPI NOR with a uniform
263 * sector size (legacy implementation).
264 * @erase_type: an array of erase types shared by all the regions.
265 * The erase types are sorted in ascending order, with the
266 * smallest Erase Type size being the first member in the
268 * @uniform_erase_type: bitmask encoding erase types that can erase the
269 * entire memory. This member is completed at init by
270 * uniform and non-uniform SPI NOR flash memories if they
271 * support at least one erase type that can erase the
274 struct spi_nor_erase_map {
275 struct spi_nor_erase_region *regions;
276 struct spi_nor_erase_region uniform_region;
277 struct spi_nor_erase_type erase_type[SNOR_ERASE_TYPE_MAX];
278 u8 uniform_erase_type;
282 * struct spi_nor_locking_ops - SPI NOR locking methods
283 * @lock: lock a region of the SPI NOR.
284 * @unlock: unlock a region of the SPI NOR.
285 * @is_locked: check if a region of the SPI NOR is completely locked
287 struct spi_nor_locking_ops {
288 int (*lock)(struct spi_nor *nor, loff_t ofs, uint64_t len);
289 int (*unlock)(struct spi_nor *nor, loff_t ofs, uint64_t len);
290 int (*is_locked)(struct spi_nor *nor, loff_t ofs, uint64_t len);
294 * struct spi_nor_otp_organization - Structure to describe the SPI NOR OTP regions
295 * @len: size of one OTP region in bytes.
296 * @base: start address of the OTP area.
297 * @offset: offset between consecutive OTP regions if there are more
299 * @n_regions: number of individual OTP regions.
301 struct spi_nor_otp_organization {
305 unsigned int n_regions;
309 * struct spi_nor_otp_ops - SPI NOR OTP methods
310 * @read: read from the SPI NOR OTP area.
311 * @write: write to the SPI NOR OTP area.
312 * @lock: lock an OTP region.
313 * @erase: erase an OTP region.
314 * @is_locked: check if an OTP region of the SPI NOR is locked.
316 struct spi_nor_otp_ops {
317 int (*read)(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf);
318 int (*write)(struct spi_nor *nor, loff_t addr, size_t len,
320 int (*lock)(struct spi_nor *nor, unsigned int region);
321 int (*erase)(struct spi_nor *nor, loff_t addr);
322 int (*is_locked)(struct spi_nor *nor, unsigned int region);
326 * struct spi_nor_otp - SPI NOR OTP grouping structure
327 * @org: OTP region organization
328 * @ops: OTP access ops
331 const struct spi_nor_otp_organization *org;
332 const struct spi_nor_otp_ops *ops;
336 * struct spi_nor_flash_parameter - SPI NOR flash parameters and settings.
337 * Includes legacy flash parameters and settings that can be overwritten
338 * by the spi_nor_fixups hooks, or dynamically when parsing the JESD216
339 * Serial Flash Discoverable Parameters (SFDP) tables.
341 * @bank_size: the flash memory bank density in bytes.
342 * @size: the total flash memory density in bytes.
343 * @writesize Minimal writable flash unit size. Defaults to 1. Set to
344 * ECC unit size for ECC-ed flashes.
345 * @page_size: the page size of the SPI NOR flash memory.
346 * @addr_nbytes: number of address bytes to send.
347 * @addr_mode_nbytes: number of address bytes of current address mode. Useful
348 * when the flash operates with 4B opcodes but needs the
349 * internal address mode for opcodes that don't have a 4B
350 * opcode correspondent.
351 * @rdsr_dummy: dummy cycles needed for Read Status Register command
353 * @rdsr_addr_nbytes: dummy address bytes needed for Read Status Register
354 * command in octal DTR mode.
355 * @n_dice: number of dice in the flash memory.
356 * @vreg_offset: volatile register offset for each die.
357 * @hwcaps: describes the read and page program hardware
359 * @reads: read capabilities ordered by priority: the higher index
360 * in the array, the higher priority.
361 * @page_programs: page program capabilities ordered by priority: the
362 * higher index in the array, the higher priority.
363 * @erase_map: the erase map parsed from the SFDP Sector Map Parameter
365 * @otp: SPI NOR OTP info.
366 * @octal_dtr_enable: enables SPI NOR octal DTR mode.
367 * @quad_enable: enables SPI NOR quad mode.
368 * @set_4byte_addr_mode: puts the SPI NOR in 4 byte addressing mode.
369 * @convert_addr: converts an absolute address into something the flash
370 * will understand. Particularly useful when pagesize is
372 * @setup: (optional) configures the SPI NOR memory. Useful for
373 * SPI NOR flashes that have peculiarities to the SPI NOR
374 * standard e.g. different opcodes, specific address
375 * calculation, page size, etc.
376 * @ready: (optional) flashes might use a different mechanism
377 * than reading the status register to indicate they
378 * are ready for a new command
379 * @locking_ops: SPI NOR locking methods.
381 struct spi_nor_flash_parameter {
393 struct spi_nor_hwcaps hwcaps;
394 struct spi_nor_read_command reads[SNOR_CMD_READ_MAX];
395 struct spi_nor_pp_command page_programs[SNOR_CMD_PP_MAX];
397 struct spi_nor_erase_map erase_map;
398 struct spi_nor_otp otp;
400 int (*octal_dtr_enable)(struct spi_nor *nor, bool enable);
401 int (*quad_enable)(struct spi_nor *nor);
402 int (*set_4byte_addr_mode)(struct spi_nor *nor, bool enable);
403 u32 (*convert_addr)(struct spi_nor *nor, u32 addr);
404 int (*setup)(struct spi_nor *nor, const struct spi_nor_hwcaps *hwcaps);
405 int (*ready)(struct spi_nor *nor);
407 const struct spi_nor_locking_ops *locking_ops;
411 * struct spi_nor_fixups - SPI NOR fixup hooks
412 * @default_init: called after default flash parameters init. Used to tweak
413 * flash parameters when information provided by the flash_info
414 * table is incomplete or wrong.
415 * @post_bfpt: called after the BFPT table has been parsed
416 * @post_sfdp: called after SFDP has been parsed (is also called for SPI NORs
417 * that do not support RDSFDP). Typically used to tweak various
418 * parameters that could not be extracted by other means (i.e.
419 * when information provided by the SFDP/flash_info tables are
420 * incomplete or wrong).
421 * @late_init: used to initialize flash parameters that are not declared in the
422 * JESD216 SFDP standard, or where SFDP tables not defined at all.
423 * Will replace the default_init() hook.
425 * Those hooks can be used to tweak the SPI NOR configuration when the SFDP
426 * table is broken or not available.
428 struct spi_nor_fixups {
429 void (*default_init)(struct spi_nor *nor);
430 int (*post_bfpt)(struct spi_nor *nor,
431 const struct sfdp_parameter_header *bfpt_header,
432 const struct sfdp_bfpt *bfpt);
433 int (*post_sfdp)(struct spi_nor *nor);
434 void (*late_init)(struct spi_nor *nor);
438 * struct flash_info - SPI NOR flash_info entry.
439 * @name: the name of the flash.
440 * @id: the flash's ID bytes. The first three bytes are the
441 * JEDIC ID. JEDEC ID zero means "no ID" (mostly older chips).
442 * @id_len: the number of bytes of ID.
443 * @sector_size: the size listed here is what works with SPINOR_OP_SE, which
444 * isn't necessarily called a "sector" by the vendor.
445 * @n_sectors: the number of sectors.
446 * @n_banks: the number of banks.
447 * @page_size: the flash's page size.
448 * @addr_nbytes: number of address bytes to send.
450 * @parse_sfdp: true when flash supports SFDP tables. The false value has no
451 * meaning. If one wants to skip the SFDP tables, one should
452 * instead use the SPI_NOR_SKIP_SFDP sfdp_flag.
453 * @flags: flags that indicate support that is not defined by the
454 * JESD216 standard in its SFDP tables. Flag meanings:
455 * SPI_NOR_HAS_LOCK: flash supports lock/unlock via SR
456 * SPI_NOR_HAS_TB: flash SR has Top/Bottom (TB) protect bit. Must be
457 * used with SPI_NOR_HAS_LOCK.
458 * SPI_NOR_TB_SR_BIT6: Top/Bottom (TB) is bit 6 of status register.
459 * Must be used with SPI_NOR_HAS_TB.
460 * SPI_NOR_4BIT_BP: flash SR has 4 bit fields (BP0-3) for block
462 * SPI_NOR_BP3_SR_BIT6: BP3 is bit 6 of status register. Must be used with
464 * SPI_NOR_SWP_IS_VOLATILE: flash has volatile software write protection bits.
465 * Usually these will power-up in a write-protected
467 * SPI_NOR_NO_ERASE: no erase command needed.
468 * NO_CHIP_ERASE: chip does not support chip erase.
469 * SPI_NOR_NO_FR: can't do fastread.
470 * SPI_NOR_QUAD_PP: flash supports Quad Input Page Program.
471 * SPI_NOR_RWW: flash supports reads while write.
473 * @no_sfdp_flags: flags that indicate support that can be discovered via SFDP.
474 * Used when SFDP tables are not defined in the flash. These
475 * flags are used together with the SPI_NOR_SKIP_SFDP flag.
476 * SPI_NOR_SKIP_SFDP: skip parsing of SFDP tables.
477 * SECT_4K: SPINOR_OP_BE_4K works uniformly.
478 * SPI_NOR_DUAL_READ: flash supports Dual Read.
479 * SPI_NOR_QUAD_READ: flash supports Quad Read.
480 * SPI_NOR_OCTAL_READ: flash supports Octal Read.
481 * SPI_NOR_OCTAL_DTR_READ: flash supports octal DTR Read.
482 * SPI_NOR_OCTAL_DTR_PP: flash supports Octal DTR Page Program.
484 * @fixup_flags: flags that indicate support that can be discovered via SFDP
485 * ideally, but can not be discovered for this particular flash
486 * because the SFDP table that indicates this support is not
487 * defined by the flash. In case the table for this support is
488 * defined but has wrong values, one should instead use a
489 * post_sfdp() hook to set the SNOR_F equivalent flag.
491 * SPI_NOR_4B_OPCODES: use dedicated 4byte address op codes to support
492 * memory size above 128Mib.
493 * SPI_NOR_IO_MODE_EN_VOLATILE: flash enables the best available I/O mode
494 * via a volatile bit.
495 * @mfr_flags: manufacturer private flags. Used in the manufacturer fixup
496 * hooks to differentiate support between flashes of the same
498 * @otp_org: flash's OTP organization.
499 * @fixups: part specific fixup hooks.
503 u8 id[SPI_NOR_MAX_ID_LEN];
505 unsigned sector_size;
513 #define SPI_NOR_HAS_LOCK BIT(0)
514 #define SPI_NOR_HAS_TB BIT(1)
515 #define SPI_NOR_TB_SR_BIT6 BIT(2)
516 #define SPI_NOR_4BIT_BP BIT(3)
517 #define SPI_NOR_BP3_SR_BIT6 BIT(4)
518 #define SPI_NOR_SWP_IS_VOLATILE BIT(5)
519 #define SPI_NOR_NO_ERASE BIT(6)
520 #define NO_CHIP_ERASE BIT(7)
521 #define SPI_NOR_NO_FR BIT(8)
522 #define SPI_NOR_QUAD_PP BIT(9)
523 #define SPI_NOR_RWW BIT(10)
526 #define SPI_NOR_SKIP_SFDP BIT(0)
527 #define SECT_4K BIT(1)
528 #define SPI_NOR_DUAL_READ BIT(3)
529 #define SPI_NOR_QUAD_READ BIT(4)
530 #define SPI_NOR_OCTAL_READ BIT(5)
531 #define SPI_NOR_OCTAL_DTR_READ BIT(6)
532 #define SPI_NOR_OCTAL_DTR_PP BIT(7)
535 #define SPI_NOR_4B_OPCODES BIT(0)
536 #define SPI_NOR_IO_MODE_EN_VOLATILE BIT(1)
540 const struct spi_nor_otp_organization otp_org;
541 const struct spi_nor_fixups *fixups;
544 #define SPI_NOR_ID_2ITEMS(_id) ((_id) >> 8) & 0xff, (_id) & 0xff
545 #define SPI_NOR_ID_3ITEMS(_id) ((_id) >> 16) & 0xff, SPI_NOR_ID_2ITEMS(_id)
547 #define SPI_NOR_ID(_jedec_id, _ext_id) \
548 .id = { SPI_NOR_ID_3ITEMS(_jedec_id), SPI_NOR_ID_2ITEMS(_ext_id) }, \
549 .id_len = !(_jedec_id) ? 0 : (3 + ((_ext_id) ? 2 : 0))
551 #define SPI_NOR_ID6(_jedec_id, _ext_id) \
552 .id = { SPI_NOR_ID_3ITEMS(_jedec_id), SPI_NOR_ID_3ITEMS(_ext_id) }, \
555 #define SPI_NOR_GEOMETRY(_sector_size, _n_sectors, _n_banks) \
556 .sector_size = (_sector_size), \
557 .n_sectors = (_n_sectors), \
559 .n_banks = (_n_banks)
561 /* Used when the "_ext_id" is two bytes at most */
562 #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors) \
563 SPI_NOR_ID((_jedec_id), (_ext_id)), \
564 SPI_NOR_GEOMETRY((_sector_size), (_n_sectors), 1),
566 #define INFOB(_jedec_id, _ext_id, _sector_size, _n_sectors, _n_banks) \
567 SPI_NOR_ID((_jedec_id), (_ext_id)), \
568 SPI_NOR_GEOMETRY((_sector_size), (_n_sectors), (_n_banks)),
570 #define INFO6(_jedec_id, _ext_id, _sector_size, _n_sectors) \
571 SPI_NOR_ID6((_jedec_id), (_ext_id)), \
572 SPI_NOR_GEOMETRY((_sector_size), (_n_sectors), 1),
574 #define CAT25_INFO(_sector_size, _n_sectors, _page_size, _addr_nbytes) \
575 .sector_size = (_sector_size), \
576 .n_sectors = (_n_sectors), \
577 .page_size = (_page_size), \
579 .addr_nbytes = (_addr_nbytes), \
580 .flags = SPI_NOR_NO_ERASE | SPI_NOR_NO_FR, \
582 #define OTP_INFO(_len, _n_regions, _base, _offset) \
586 .offset = (_offset), \
587 .n_regions = (_n_regions), \
591 .parse_sfdp = true, \
593 #define FLAGS(_flags) \
596 #define NO_SFDP_FLAGS(_no_sfdp_flags) \
597 .no_sfdp_flags = (_no_sfdp_flags), \
599 #define FIXUP_FLAGS(_fixup_flags) \
600 .fixup_flags = (_fixup_flags), \
602 #define MFR_FLAGS(_mfr_flags) \
603 .mfr_flags = (_mfr_flags), \
606 * struct spi_nor_manufacturer - SPI NOR manufacturer object
607 * @name: manufacturer name
608 * @parts: array of parts supported by this manufacturer
609 * @nparts: number of entries in the parts array
610 * @fixups: hooks called at various points in time during spi_nor_scan()
612 struct spi_nor_manufacturer {
614 const struct flash_info *parts;
616 const struct spi_nor_fixups *fixups;
620 * struct sfdp - SFDP data
621 * @num_dwords: number of entries in the dwords array
622 * @dwords: array of double words of the SFDP data
629 /* Manufacturer drivers. */
630 extern const struct spi_nor_manufacturer spi_nor_atmel;
631 extern const struct spi_nor_manufacturer spi_nor_catalyst;
632 extern const struct spi_nor_manufacturer spi_nor_eon;
633 extern const struct spi_nor_manufacturer spi_nor_esmt;
634 extern const struct spi_nor_manufacturer spi_nor_everspin;
635 extern const struct spi_nor_manufacturer spi_nor_fujitsu;
636 extern const struct spi_nor_manufacturer spi_nor_gigadevice;
637 extern const struct spi_nor_manufacturer spi_nor_intel;
638 extern const struct spi_nor_manufacturer spi_nor_issi;
639 extern const struct spi_nor_manufacturer spi_nor_macronix;
640 extern const struct spi_nor_manufacturer spi_nor_micron;
641 extern const struct spi_nor_manufacturer spi_nor_st;
642 extern const struct spi_nor_manufacturer spi_nor_spansion;
643 extern const struct spi_nor_manufacturer spi_nor_sst;
644 extern const struct spi_nor_manufacturer spi_nor_winbond;
645 extern const struct spi_nor_manufacturer spi_nor_xilinx;
646 extern const struct spi_nor_manufacturer spi_nor_xmc;
648 extern const struct attribute_group *spi_nor_sysfs_groups[];
650 void spi_nor_spimem_setup_op(const struct spi_nor *nor,
651 struct spi_mem_op *op,
652 const enum spi_nor_protocol proto);
653 int spi_nor_write_enable(struct spi_nor *nor);
654 int spi_nor_write_disable(struct spi_nor *nor);
655 int spi_nor_set_4byte_addr_mode_en4b_ex4b(struct spi_nor *nor, bool enable);
656 int spi_nor_set_4byte_addr_mode_wren_en4b_ex4b(struct spi_nor *nor,
658 int spi_nor_set_4byte_addr_mode_brwr(struct spi_nor *nor, bool enable);
659 int spi_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable);
660 int spi_nor_wait_till_ready(struct spi_nor *nor);
661 int spi_nor_global_block_unlock(struct spi_nor *nor);
662 int spi_nor_prep_and_lock(struct spi_nor *nor);
663 void spi_nor_unlock_and_unprep(struct spi_nor *nor);
664 int spi_nor_sr1_bit6_quad_enable(struct spi_nor *nor);
665 int spi_nor_sr2_bit1_quad_enable(struct spi_nor *nor);
666 int spi_nor_sr2_bit7_quad_enable(struct spi_nor *nor);
667 int spi_nor_read_id(struct spi_nor *nor, u8 naddr, u8 ndummy, u8 *id,
668 enum spi_nor_protocol reg_proto);
669 int spi_nor_read_sr(struct spi_nor *nor, u8 *sr);
670 int spi_nor_sr_ready(struct spi_nor *nor);
671 int spi_nor_read_cr(struct spi_nor *nor, u8 *cr);
672 int spi_nor_write_sr(struct spi_nor *nor, const u8 *sr, size_t len);
673 int spi_nor_write_sr_and_check(struct spi_nor *nor, u8 sr1);
674 int spi_nor_write_16bit_cr_and_check(struct spi_nor *nor, u8 cr);
676 ssize_t spi_nor_read_data(struct spi_nor *nor, loff_t from, size_t len,
678 ssize_t spi_nor_write_data(struct spi_nor *nor, loff_t to, size_t len,
680 int spi_nor_read_any_reg(struct spi_nor *nor, struct spi_mem_op *op,
681 enum spi_nor_protocol proto);
682 int spi_nor_write_any_volatile_reg(struct spi_nor *nor, struct spi_mem_op *op,
683 enum spi_nor_protocol proto);
684 int spi_nor_erase_sector(struct spi_nor *nor, u32 addr);
686 int spi_nor_otp_read_secr(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf);
687 int spi_nor_otp_write_secr(struct spi_nor *nor, loff_t addr, size_t len,
689 int spi_nor_otp_erase_secr(struct spi_nor *nor, loff_t addr);
690 int spi_nor_otp_lock_sr2(struct spi_nor *nor, unsigned int region);
691 int spi_nor_otp_is_locked_sr2(struct spi_nor *nor, unsigned int region);
693 int spi_nor_hwcaps_read2cmd(u32 hwcaps);
694 int spi_nor_hwcaps_pp2cmd(u32 hwcaps);
695 u8 spi_nor_convert_3to4_read(u8 opcode);
696 void spi_nor_set_read_settings(struct spi_nor_read_command *read,
700 enum spi_nor_protocol proto);
701 void spi_nor_set_pp_settings(struct spi_nor_pp_command *pp, u8 opcode,
702 enum spi_nor_protocol proto);
704 void spi_nor_set_erase_type(struct spi_nor_erase_type *erase, u32 size,
706 void spi_nor_mask_erase_type(struct spi_nor_erase_type *erase);
707 struct spi_nor_erase_region *
708 spi_nor_region_next(struct spi_nor_erase_region *region);
709 void spi_nor_init_uniform_erase_map(struct spi_nor_erase_map *map,
710 u8 erase_mask, u64 flash_size);
712 int spi_nor_post_bfpt_fixups(struct spi_nor *nor,
713 const struct sfdp_parameter_header *bfpt_header,
714 const struct sfdp_bfpt *bfpt);
716 void spi_nor_init_default_locking_ops(struct spi_nor *nor);
717 void spi_nor_try_unlock_all(struct spi_nor *nor);
718 void spi_nor_set_mtd_locking_ops(struct spi_nor *nor);
719 void spi_nor_set_mtd_otp_ops(struct spi_nor *nor);
721 int spi_nor_controller_ops_read_reg(struct spi_nor *nor, u8 opcode,
722 u8 *buf, size_t len);
723 int spi_nor_controller_ops_write_reg(struct spi_nor *nor, u8 opcode,
724 const u8 *buf, size_t len);
726 int spi_nor_check_sfdp_signature(struct spi_nor *nor);
727 int spi_nor_parse_sfdp(struct spi_nor *nor);
729 static inline struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd)
731 return container_of(mtd, struct spi_nor, mtd);
734 #ifdef CONFIG_DEBUG_FS
735 void spi_nor_debugfs_register(struct spi_nor *nor);
736 void spi_nor_debugfs_shutdown(void);
738 static inline void spi_nor_debugfs_register(struct spi_nor *nor) {}
739 static inline void spi_nor_debugfs_shutdown(void) {}
742 #endif /* __LINUX_MTD_SPI_NOR_INTERNAL_H */