piix_set_piomode(9)

💅 piix_set_piomode(9) — Kernel API Manual 💅

💖 NAME 💖

piix_set_piomode — initialize host controller PATA PIO timings. That’s the whole slay: it’s the function that gets those host controller PATA PIO timings initialized. 🎀

✨ SYNOPSIS ✨

void piix_set_piomode (struct ata_port *ap , struct ata_device *adev );

🫶 ARGUMENTS 🫶

• ap — Port whose timings we are configuring. The port we’re configuring the timings for, bestie — that’s the one.
• adev — Drive in question. The drive in question, literally the drive we’re talking about. 🙈

🌸 DESCRIPTION 🌸

Set PIO mode for device, in host controller PCI config space. So yes: the device gets its PIO mode set, and the setting happens in the host controller PCI config space. That’s the vibe, that’s the function. 💅

LOCKING: None (inherited from caller). No locks live in here — it inherits the locking from whoever called it. Not me adding lore, that’s just the note. 😌

🦋 SEE ALSO 🦋

Kernel file ./drivers/ata/ata_piix.c is the home base, and these are the related besties, in order:

• ich_pata_cable_detect(9)
• piix_pata_prereset(9)
• do_pata_set_dmamode(9)
• piix_set_dmamode(9)
• ich_set_dmamode(9)
• piix_check_450nx_errata(9)
• piix_init_one(9)

okay bye bestie, that’s piix_set_piomode(9) from source ./drivers/ata, dated October 2026 — mwah 💋