it8213_set_dmamode(9)

💅 it8213_set_dmamode — a Kernel API Manual moment

okay so bestie, welcome to another ✨ kernel API manual ✨ page, and this one is giving "tiny function, very specific job." no cap.

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🎀 NAME 🎀

it8213_set_dmamode — literally here to initialize host controller PATA DMA timings. that's it, that's the whole vibe. 💖

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✨ SYNOPSIS ✨

void it8213_set_dmamode (struct ata_port *ap , struct ata_device *adev );

yes she takes two pointers and returns void. no notes, she's an icon. 👑

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🦋 ARGUMENTS 🦋

• ap — the port whose timings we're out here configuring. like, this is the port we're doing a whole glow-up on. 🫶
• adev — the device we're programming. this is the one getting the makeover. 🧚

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🌸 DESCRIPTION 🌸

so what she actually does: set UDMA/MWDMA mode for the device, and she does it in host controller PCI config space. that's the venue, that's where the magic happens. 💫

and here's the fun lil detail — this device is basically an ICH alike. iykyk. 😌

LOCKING: None (inherited from caller). so lock it yourself bestie, she is NOT doing it for you. inherited from the caller, periodt. 🔥

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⭐ SEE ALSO ⭐

• the kernel file ./drivers/ata/pata_it8213.c — go read it, she's the main character 💜
• it8213_pre_reset(9)
• it8213_cable_detect(9)
• it8213_set_piomode(9)
• it8213_init_one(9)

the whole friend group, fr fr. 🌈

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okay that's the page!! 🎀 this one came from ./drivers/ata, dated October 2026, and yeah — it8213_set_dmamode(9), no cap. mwah 💅💖🌸