sis_66_set_dmamode(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sis_66_set_dmamode(9) — the Kernel API Manual, bestie edition 🎀

okay so welcome to the sis_66_set_dmamode(9) page, like the actual kernel API manual vibes, and honestly? it's giving "small function, big job" ✨

🌸 NAME 🌸

sis_66_set_dmamode — literally here to initialize host controller PATA DMA timings 💖 no cap, that's the whole assignment.

✨ SYNOPSIS ✨

void sis_66_set_dmamode (struct ata_port *ap , struct ata_device *adev
);

she takes two arguments, she returns void, she does not miss 👑

🫶 ARGUMENTS 🫶

  • ap — the port whose timings we're configuring. like, this is the port we're doing a whole glow-up on 💅
  • adev — the device to program. this is the one getting the makeover, periodt.

🦋 DESCRIPTION 🦋

So what she does: she sets the UDMA/MWDMA mode for the device, and she does it in the host controller PCI config space. That's the venue, that's where the magic happens ✨

She handles UDMA66 and early UDMA100 devices — those are her girls. And the way she also supports MWDMA, unlike the old ide/pci driver? iconic. truly main character energy 🎀

LOCKING: None (inherited from caller). 👀 so like, she's not doing any locking herself — that's on whoever called her. she's trusting you, bestie. don't make it weird 🙈

🔥 SEE ALSO 🔥

Kernel file ./drivers/ata/pata_sis.c — go read her friends, they're all linked up iykyk 💜

the whole squad fr fr 🫶

🌈 okay that's the page!! this one came out of ./drivers/ata, dated October 2026, and the manual name is sis_66_set_dmamode(9) in case you forgot already 💀 slay, go set some DMA timings, ily, bye!! 💖✨🎀

📦 where this page comes from