optidma_mode_setup(9)

✨ optidma_mode_setup(9) ✨

Okay bestie, welcome to the optidma_mode_setup page — it lives in the Kernel API Manual and it's literally all about setting mode data. Buckle up 🎀

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🌸 NAME 🌸

optidma_mode_setup — set mode data. That's it. That's the whole vibe check. 💅

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🦋 SYNOPSIS 🦋

void optidma_mode_setup (struct ata_port *ap , struct ata_device *adev ,
u8 mode );

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💖 ARGUMENTS 💖

• ap — the ATA interface. Your port, your main character 🫶
• adev — the ATA device. The actual lil guy we're poking at 👑
• mode — the mode you wanna set. Yeah. That mode. ✨

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🔥 DESCRIPTION 🔥

So this function gets called to do the DMA or PIO mode setup. The timing numbers? All pre computed, bestie — every single one — specifically so the code stays clean. No cap, it's giving organized. 🧚

There are two tables in there, and which one you get depends on the hardware clock speed. Two tables, one function, zero chaos (mostly). 🌈

⚠️ WARNING: While we do this, the IDE registers vanish. Like, gone. Not me being dramatic, they literally disappear 😭. If we take an IRQ here, we depend on the host set locking to avoid catastrophe. So like... the locking better be there. This is not a drill, fr fr. 💀

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🍓 SEE ALSO 🍓

Kernel file ./drivers/ata/pata_optidma.c:

• optidma_pre_reset(9)
• optidma_unlock(9)
• optidma_lock(9)
• optiplus_mode_setup(9)
• optidma_set_pio_mode(9)
• optidma_set_dma_mode(9)
• optiplus_set_pio_mode(9)
• optiplus_set_dma_mode(9)
• optidma_make_bits43(9)
• optidma_set_mode(9)
• optiplus_with_udma(9)

All of these ate, go read them 💜

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That's the whole page, bestie! Sending you off with the source location ./drivers/ata and the date October 2026 — mwah, slay, periodt 💅🎀🦋