sis_133_set_dmamode(9)

💅 sis_133_set_dmamode(9) — or, the Kernel API Manual entry where we set DMA timings and absolutely slay

okay so bestie, welcome to the sis_133_set_dmamode page from the Kernel API Manual ✨ grab a lil snack, this one's a short read but it's important, i promise 🫶

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🌸 NAME 🌸

sis_133_set_dmamode — literally the function that initializes host controller PATA DMA timings 💫 no cap, that's the whole job.

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✨ SYNOPSIS ✨

void sis_133_set_dmamode (struct ata_port *ap , struct ata_device *adev
);

look at her. iconic signature. returns void, so she gives you nothing back — she just does the thing 💅

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🎀 ARGUMENTS 🎀

• ap — the port whose timings we're configuring, like the main character of this whole operation 👑
• adev — the device we're programming. yes, that one. she's getting the timings fr fr 🌸

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🦋 DESCRIPTION 🦋

okay so what she does: she sets the UDMA/MWDMA mode for the device, and she does it in host controller PCI config space 💫 that's the vibe. that's the whole vibe check.

LOCKING: None. nada. zero. she inherits it from the caller — so whoever called her better have their locking situation figured out already, iykyk 🙈

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⭐ SEE ALSO ⭐

bestie you are gonna want the whole friend group here, they all hang out together 🫶

• the kernel file ./drivers/ata/pata_sis.c
• sis_old_port_base(9)
• sis_port_base(9)
• sis_133_cable_detect(9)
• sis_66_cable_detect(9)
• sis_pre_reset(9)
• sis_set_fifo(9)
• sis_old_set_piomode(9)
• sis_100_set_piomode(9)
• sis_133_set_piomode(9)
• sis_old_set_dmamode(9)
• sis_66_set_dmamode(9)
• sis_100_set_dmamode(9)
• sis_133_early_set_dmamode(9)
• sis_133_mode_filter(9)
• sis_init_one(9)

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and that's the whole page, bestie 🌈💖

cute lil sign-off time 🎀 this one lives under ./drivers/ata, dated October 2026, and it's sis_133_set_dmamode(9) all day every day. mwah 💋 go set some timings, you got this 🦋✨