ata_cable_40wire(9)

💅 ata_cable_40wire(9) — kernel API manual, but make it make sense

okay so bestie, welcome to the Kernel API Manual page for ata_cable_40wire(9) ✨ this one is short but it's lowkey important, so let's get into it 🎀

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🌸 NAME 🌸

ata_cable_40wire — returns the 40 wire cable type, periodt 💅

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🦋 SYNOPSIS 🦋

int ata_cable_40wire (struct ata_port *ap );

that's it. that's the whole vibe check. one function, one argument, iconic behavior 😌

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🎀 ARGUMENTS 🎀

• ap — the port. that's it, that's the whole argument. it's the struct ata_port * you're handing over 🫶

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✨ DESCRIPTION ✨

so this is a helper method for drivers that want to hardwire 40 wire cable detection 🔥 like, instead of doing the whole "let me actually go detect this cable" situation, the driver just. claims it. says it's 40 wire. done. no cap 💀

it's giving "main character energy" for drivers who already know what's up and don't need the kernel to guess 🌈

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💜 SEE ALSO 💜

okay this part is a LOT, but every single one is here because we do not skip details in this house 👑

Kernel file ./drivers/ata/libata-core.c 🔗 and then, get comfy:

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_xfer_mode2shift(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_80wire(9), ata_cable_unknown(9), ata_cable_ignore(9), ata_cable_sata(9), sata_print_link_status(9),

and we're not even halfway, stay with me 🧚

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),

okay almost there, you're doing amazing 🍓

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)

that's all of them, every single one, we ate and left no crumbs 🔥👑

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ngl bestie, this page is short but it's exactly the kind of "small helper that sits in a big subsystem" situation — so if you wanna go deeper, the SEE ALSO list above is literally your group chat 😭🫶

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💖 that's the tea, babe — this one's from ./drivers/ata, dated October 2026, and it's the ata_cable_40wire(9) page of the Kernel API Manual. slay, go write some drivers 💅✨