omap_calculate_ecc_bch_sw(9)

💅 omap_calculate_ecc_bch_sw(9) — kernel API manual, but make it make sense

okay so bestie, welcome to the omap_calculate_ecc_bch_sw(9) page 💖 this one lives in the Kernel API Manual, and honestly? she's giving "small but crucial supporting character" energy. no cap.

---

✨ NAME ✨

omap_calculate_ecc_bch_sw — the ECC generator for a sector when you're doing SW based correction 🎀

---

🌸 SYNOPSIS 🌸

int omap_calculate_ecc_bch_sw (struct nand_chip *chip , const u_char
*dat , u_char *ecc_calc );

like, that's the whole signature, copy it exactly, don't @ me 💅

---

🦋 ARGUMENTS 🦋

• chip — your NAND chip object, the main character of this whole situation 👑
• dat — the pointer to the data that we're computing ECC on, literally the data in question ✨
• ecc_calc — the buffer where the calculated ECC bytes get stored 🫶

---

💜 DESCRIPTION 💜

so what she does is support calculating BCH4/8/16 ECC vectors for one sector. that's the vibe check: one sector at a time, no multitasking.

this is the one you reach for when SW based correction is required, because ECC is needed for one sector at a time. periodt. 🔥

---

🌈 SEE ALSO 🌈

bestie go read the kernel file ./drivers/mtd/nand/raw/omap2.c first, then these icons:

• omap_prefetch_enable(9)
• omap_nand_data_in_pref(9)
• omap_nand_data_out_pref(9)
• omap_nand_data_in_dma_pref(9)
• omap_nand_data_out_dma_pref(9)
• gen_true_ecc(9)
• omap_compare_ecc(9)
• omap_correct_data(9)
• omap_calculate_ecc(9)
• omap_enable_hwecc(9)
• omap_enable_hwecc_bch(9)
• _omap_calculate_ecc_bch(9)
• omap_calculate_ecc_bch_multi(9)
• erased_sector_bitflips(9)
• omap_elm_correct_data(9)
• omap_write_page_bch(9)
• omap_write_subpage_bch(9)
• omap_read_page_bch(9)
• is_elm_present(9)

that's the whole squad fr fr 🧚 no skips, no cuts 💀

---

and that's the page!! 🍓 sourced from ./drivers/mtd/nand/raw, dated October 2026, and like always she signs off as omap_calculate_ecc_bch_sw(9). mwah 💋 bye bestie, go compute those ECC vectors ⭐