STRUCT NAND_ECC_SW_BCH_CONF(9)

💖 struct nand_ecc_sw_bch_conf(9) 💖

okay so this is a page from the Kernel API Manual, and it's all about...

✨ NAME ✨

struct nand_ecc_sw_bch_conf — the private software BCH ECC engine structure, bestie. that's it, that's the whole vibe. it's giving "backstage pass to the ECC engine" 🎀

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🌸 SYNOPSIS 🌸

here's the struct in all its glory, typed out exactly so you can copy it into your notes:

struct nand_ecc_sw_bch_conf {
    struct nand_ecc_req_tweak_ctx req_ctx;
    unsigned int code_size;
    u8 *calc_buf;
    u8 *code_buf;
    struct bch_control *bch;
    unsigned int *errloc;
    unsigned char *eccmask;
 };

like, look at her. seven fields. main character energy fr fr 👑

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🦋 Members 🦋

okay now the part where we meet everyone in the group chat one by one 💅

• req_ctx — saves the request context, and also tweaks the original request so it fits what the engine actually needs. lowkey the handler of the group, keeps everyone on schedule.
• code_size — number of bytes needed to store a code (one code per step). yes, one code per step, don't forget that part 🙈
• calc_buf — buffer to use when calculating ECC bytes. the math-y one 🧮
• code_buf — buffer to use when reading (raw) ECC bytes from the chip. note the (raw), she's specific about it ✨
• bch — BCH control structure. the actual boss of the operation.
• errloc — error location array. literally the friend who points out where things went wrong, but make it helpful 🫶
• eccmask — XOR ecc mask, allows erased pages to be decoded as valid. iconic behavior honestly 🌈

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⭐ SEE ALSO ⭐

if you wanna dig deeper (and you should), go check out the kernel file:

• ./include/linux/mtd/nand-ecc-sw-bch.h

iykyk 🔥

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k that's the whole page bestie, no cap. this absolute gem lives in ./include/linux/mtd and the version/date stamp on it says October 2026 — so like, mark your calendar, she's stamped and official 📅💜 and yes, this was struct nand_ecc_sw_bch_conf(9), we stan a kernel API manual entry. slay. periodt. 🎀✨