ata_xfer_mode2shift(9)

✨ NAME ✨

okay so bestie, meet ata_xfer_mode2shift(9) — yes, that’s the Kernel API Manual page we’re doing today — and its whole thing is finding the matching xfer_shift for an XFER_*. iconic, honestly. 🫶

---

🎀 SYNOPSIS 🎀

int ata_xfer_mode2shift (u8 xfer_mode );

🌸 ARGUMENTS 🌸

• xfer_mode — the XFER_* of interest. that’s it, that’s the arg. 💅

🦋 DESCRIPTION 🦋

so like, it returns the matching xfer_shift for xfer_mode. that’s the vibe. no extra quests, no side plots. ✨

LOCKING: None. literally no locking, not even a tiny bit. 🔓

👑 RETURN 👑

Matching xfer_shift — or -1 if no match found. so if it can’t find your girl, you get -1, periodt. 💀

---

🌈 SEE ALSO 🌈

Kernel file: ./drivers/ata/libata-core.c — the source file to peek at. 👀

the whole ATA friend group:

• ata_link_next(9), ata_dev_next(9), ata_dev_phys_link(9), ata_force_cbl(9), ata_force_pflags(9), ata_force_link_limits(9)
• ata_force_xfermask(9), ata_force_quirks(9), atapi_cmd_type(9), ata_set_rwcmd_protocol(9), ata_tf_read_block(9), ata_build_rw_tf(9)
• ata_pack_xfermask(9), ata_unpack_xfermask(9), ata_xfer_mask2mode(9), ata_xfer_mode2mask(9), ata_mode_string(9), ata_dev_classify(9)
• ata_id_string(9), ata_id_c_string(9), ata_read_native_max_address(9), ata_set_max_sectors(9), ata_hpa_resize(9), ata_dump_id(9)
• ata_id_xfermask(9), ata_exec_internal(9), ata_pio_need_iordy(9), ata_pio_mask_no_iordy(9), ata_do_dev_read_id(9), ata_dev_read_id(9)
• ata_dev_power_set_standby(9), ata_dev_power_set_active(9), ata_read_log_page(9), ata_dev_configure(9), ata_cable_40wire(9), ata_cable_80wire(9)
• ata_cable_unknown(9), ata_cable_ignore(9), ata_cable_sata(9), sata_print_link_status(9), ata_dev_pair(9), ata_timing_cycle2mode(9)
• ata_down_xfermask_limit(9), ata_set_mode(9), ata_wait_ready(9), ata_wait_after_reset(9), ata_std_prereset(9), ata_std_postreset(9)
• ata_dev_same_device(9), ata_dev_reread_id(9), ata_dev_revalidate(9), ata_is_40wire(9), cable_is_40wire(9), ata_dev_xfermask(9)
• ata_dev_set_xfermode(9), ata_dev_set_feature(9), ata_dev_init_params(9), atapi_check_dma(9), ata_std_qc_defer(9), ata_sg_init(9)
• ata_sg_clean(9), ata_sg_setup(9), swap_buf_le16(9), ata_qc_free(9), ata_qc_complete(9), ata_qc_get_active(9)
• ata_qc_issue(9), ata_phys_link_online(9), ata_phys_link_offline(9), ata_link_online(9), ata_link_offline(9), ata_host_suspend(9)
• ata_host_resume(9), ata_dev_init(9), ata_link_init(9), sata_link_init_spd(9), ata_port_alloc(9), ata_host_alloc(9)
• ata_host_alloc_pinfo(9), ata_finalize_port_ops(9), ata_host_start(9), ata_host_init(9), ata_host_register(9), ata_host_activate(9)
• ata_dev_free_resources(9), ata_port_detach(9), ata_host_detach(9), ata_pci_remove_one(9), ata_platform_remove_one(9), ata_msleep(9)
• ata_wait_register(9)

---

and that’s the page, bestie 🫶 this beauty comes from ./drivers/ata, dated October 2026, and it’s filed under ata_xfer_mode2shift(9). slay. 💖