ata_sg_setup(9)

💅 ata_sg_setup(9) — like, the kernel API manual page, bestie

okay so you found ata_sg_setup and you're probably like "what does this even do" — don't worry, I got you 🫶 it's a kernel API manual page (yes, section 9, the fancy dev one), and honestly it's a short one, so buckle up.

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✨ NAME ✨

ata_sg_setup — DMA-map the scatter-gather table associated with a command. that's it, that's the whole vibe 💫

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🌸 SYNOPSIS 🌸

int ata_sg_setup (struct ata_queued_cmd *qc );

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🎀 ARGUMENTS 🎀

• qc — the command whose scatter-gather table is gonna get mapped. like, hand it the command and it does the thing 💅

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🦋 DESCRIPTION 🦋

okay so basically: DMA-map the scatter-gather table associated with queued_cmd qc. that's the whole gig. iconic, minimal, does exactly what it says on the tin ✨

LOCKING: spin_lock_irqsave(host lock) — no cap, that's the locking story, memorize it 📌

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🔥 RETURN 🔥

• Zero on success 🌈 (slay)
• negative on error 😭 (not slay, but at least it tells you)

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👑 SEE ALSO 👑

Kernel file ./drivers/ata/libata-core.c, plus literally the entire extended ata family reunion — here they all are, no gatekeeping, every single one:

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_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), 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) 🧚💜

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and that's the page, bestie 💖 straight from the ./drivers/ata corner of the kernel, dated October 2026, filed under ata_sg_setup(9) — go forth and DMA-map responsibly, mwah 💅✨