nand_write_page_swecc(9)

💅 nand_write_page_swecc(9) 💅

okay so this one lives in the Kernel API Manual (that's the manual name, bestie, we're in kernel-land now) and it's literally the function that writes a whole page of NAND using software ECC. Software. As in, your CPU is doing the ECC math with its bare hands. Respect the grind. ✨

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🌸 NAME 🌸

nand_write_page_swecc — the [REPLACEABLE] software ECC based page write function. yeah, the brackets are part of the name, don't come for me. it's a replaceable hook, meaning the NAND core can swap it out for whatever function actually fits your chip. very main character of it, honestly.

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🎀 SYNOPSIS 🎀

int nand_write_page_swecc (struct nand_chip *chip , const uint8_t *buf ,
       int oob_required , int page );

four args, returns an int, no cap that's the whole vibe check.

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🦋 ARGUMENTS 🦋

• chip — the nand chip info structure. like, the whole personality file for your chip. everything it knows about itself lives in here 🫶
• buf — data buffer. this is the actual payload, the data you wanna send off into flash. handle with care, bestie.
• oob_required — must write chip->oob_poi to OOB. so if this one's set, the out-of-band area is getting chip->oob_poi written into it, periodt. not optional, not vibes-based. 💅
• page — page number to write. which page, out of all the pages. that's it. that's the arg.

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👑 SEE ALSO 👑

before you go, the squad. all of these are literally in the kernel file ./drivers/mtd/nand/raw/nand_base.c, so go say hi:

nand_extract_bits(9), nand_select_target(9), nand_deselect_target(9), nand_release_device(9), nand_bbm_get_next_page(9), nand_block_bad(9), nand_region_is_secured(9), nand_get_device(9), nand_check_wp(9), nand_fill_oob(9), nand_do_write_oob(9), nand_default_block_markbad(9), nand_markbad_bbm(9), nand_block_markbad_lowlevel(9), nand_block_isreserved(9), nand_block_checkbad(9), nand_soft_waitrdy(9), nand_gpio_waitrdy(9), panic_nand_wait(9), nand_reset_interface(9), nand_setup_interface(9), nand_choose_best_sdr_timings(9), nand_choose_best_nvddr_timings(9), nand_choose_best_timings(9), nand_choose_interface_config(9), nand_fill_column_cycles(9), nand_read_page_op(9), nand_read_param_page_op(9), nand_change_read_column_op(9), nand_read_oob_op(9), nand_prog_page_begin_op(9), nand_prog_page_end_op(9), nand_prog_page_op(9), nand_change_write_column_op(9), nand_readid_op(9), nand_status_op(9), nand_exit_status_op(9), nand_erase_op(9), nand_set_features_op(9), nand_get_features_op(9), nand_reset_op(9), nand_read_data_op(9), nand_write_data_op(9), struct nand_op_parser_ctx(9), nand_op_parser_must_split_instr(9), nand_op_parser_match_pat(9), nand_op_parser_exec_op(9), nand_subop_get_addr_start_off(9), nand_subop_get_num_addr_cyc(9), nand_subop_get_data_start_off(9), nand_subop_get_data_len(9), nand_reset(9), nand_get_features(9), nand_set_features(9), nand_read_page_raw_notsupp(9), nand_read_page_raw(9), nand_monolithic_read_page_raw(9), nand_read_page_raw_syndrome(9), nand_read_page_swecc(9), nand_read_subpage(9), nand_read_page_hwecc(9), nand_read_page_hwecc_oob_first(9), nand_read_page_syndrome(9), nand_transfer_oob(9), nand_setup_read_retry(9), nand_do_read_ops(9), nand_read_oob_std(9), nand_read_oob_syndrome(9), nand_write_oob_std(9), nand_write_oob_syndrome(9), nand_do_read_oob(9), nand_read_oob(9), nand_write_page_raw_notsupp(9), nand_write_page_raw(9), nand_monolithic_write_page_raw(9), nand_write_page_raw_syndrome(9), nand_write_page_hwecc(9), nand_write_subpage_hwecc(9), nand_write_page_syndrome(9), nand_write_page(9), nand_do_write_ops(9), panic_nand_write(9), nand_write_oob(9), nand_erase(9), nand_erase_nand(9), nand_sync(9), nand_block_isbad(9), nand_block_markbad(9), nand_suspend(9), nand_resume(9), nand_shutdown(9), nand_lock(9), nand_unlock(9), rawnand_dt_parse_gpio_cs(9), nand_scan_ident(9), nand_check_ecc_caps(9), nand_match_ecc_req(9), nand_maximize_ecc(9), nand_ecc_choose_conf(9), nand_scan_tail(9), nand_scan_with_ids(9), nand_cleanup(9).

like, that's the whole group chat. go read them, iykyk 💀🔥

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ngl bestie, it's a [REPLACEABLE] function — so if you're writing a driver, this is the default software-ECC page writer you can swap out. it's giving "starter pack, but make it kernel". 🌈

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and that's the page!! 🎀 brought to you by the fine folks over at ./drivers/mtd/nand/raw, dated October 2026 — mwah, love that for us, see you in the next man page, bestie 💖🧚⭐