calc_block_sector(9)

🎀 calc_block_sector(9) — Kernel API Manual 🎀

okay bestie, welcome to the Kernel API Manual page for calc_block_sector(9). This is the little helper that does the math for blocks, pages, and ofs, and yes we’re keeping every detail because that’s the whole point. 💅

🌸 NAME 🌸

calc_block_sector — Calculate blocks, pages and ofs. ✨

✨ SYNOPSIS ✨

void calc_block_sector (loff_t from , int *block0 , int *block1 , int *page , int *ofs , int reliable );

🎀 ARGUMENTS 🎀

• from — offset in flash 🌈
• block0 — first plane block index calculated 💖
• block1 — second plane block index calculated 💖
• page — page calculated 📄
• ofs — offset in page 🎯
• reliable — 0 if docg3 in normal mode, 1 if docg3 in fast mode, 2 if docg3 in reliable mode. 🫶

💅 DESCRIPTION 💅

okay so the calculation is based on the reliable/normal mode. In normal mode, the 64 pages of a block are available. In reliable mode, as pages 2*n and 2*n+1 are clones, only 32 pages per block are available. That’s the tea — nothing extra, no cap. 🍓

🦋 SEE ALSO 🦋

Kernel file ./drivers/mtd/devices/docg3.c and all these besties:

• doc_delay(9)
• doc_read_data_area(9)
• doc_write_data_area(9)
• doc_set_reliable_mode(9)
• doc_set_asic_mode(9)
• doc_set_device_id(9)
• doc_set_extra_page_mode(9)
• doc_setup_addr_sector(9)
• doc_setup_writeaddr_sector(9)
• doc_read_seek(9)
• doc_write_seek(9)
• doc_read_page_ecc_init(9)
• doc_write_page_ecc_init(9)
• doc_ecc_disable(9)
• doc_hamming_ecc_init(9)
• doc_ecc_bch_fix_data(9)
• doc_read_page_prepare(9)
• doc_read_page_getbytes(9)
• doc_write_page_putbytes(9)
• doc_get_bch_hw_ecc(9)
• doc_page_finish(9)
• doc_read_page_finish(9)
• doc_read_oob(9)
• doc_block_isbad(9)
• doc_get_erase_count(9)
• doc_get_op_status(9)
• doc_write_erase_wait_status(9)
• doc_erase_block(9)
• doc_erase(9)
• doc_write_page(9)
• doc_guess_autoecc(9)
• doc_fill_autooob(9)
• doc_backup_oob(9)
• doc_write_oob(9)
• doc_set_driver_info(9)
• doc_probe_device(9)
• doc_release_device(9)
• docg3_resume(9)
• docg3_suspend(9)
• docg3_probe(9)
• docg3_release(9)

🫶 Cute sign-off: source/version ./drivers/mtd/devices, date October 2026, manual page calc_block_sector(9). Byeee, slay. 💖