sis_old_set_piomode(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sis_old_set_piomode(9) — like, the Kernel API Manual entry, bestie 🎀

okay so picture this: you're deep in the kernel, the vibes are immaculate, and somebody gotta set up some PATA PIO timings on a host controller. that somebody is this function. welcome to the group chat ✨

✨ NAME ✨

sis_old_set_piomode — Initialize host controller PATA PIO timings. that's it, that's the whole job, and it eats every time 💅

🌸 SYNOPSIS 🌸

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

literally just two args, no return value, no drama. she's a void girlie 🫶

🦋 ARGUMENTS 🦋

  • ap — the port whose timings we're configuring, i.e. the main character of this whole operation 👑
  • adev — the device we're configuring for. the one we're doing all this for, fr fr 🎀

💖 DESCRIPTION 💖

so what she does is: set the PIO mode for the device, in the host controller's PCI config space. yes, you heard me, PCI config space. that's her little home. 🏠✨

and bestie, she's not picky — this function handles PIO set up for all the chips that are pre ATA100, and the early ATA100 devices too. equal opportunity timing-setter, we love to see it 🌈

LOCKING: None (inherited from caller). no cap — she does not do her own locking, she inherits it from whoever called her. so whoever called her better have their life together, iykyk 💀

👀 SEE ALSO 👀

the whole friend group, in ./drivers/ata/pata_sis.c in the Kernel file 🍓:

fifteen of them. a whole squad. go say hi 💜

and that's the tea, bestie 🧚 this lil page came from the ./drivers/ata source, Kernel API Manual edition, dated October 2026 — mwah, love that for us 💋✨

📦 where this page comes from