legacy_init(9)

🌸 legacy_init(9) 🌸

ok so bestie, welcome to the legacy_init(9) page from the Kernel API Manual — this one's a little kernel function with big "i still talk to the old hardware" energy, and we're gonna get into it 💅

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✨ NAME ✨

legacy_init — the function that attaches legacy interfaces 🎀 like, it goes out and hooks up the old-school stuff.

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🦋 SYNOPSIS 🦋

int legacy_init (void );

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🌈 ARGUMENTS 🌈

• void — literally no arguments. nothing. zero. a clean slate, bestie 🫶

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💖 DESCRIPTION 💖

ok so what it does: it attaches the legacy IDE interfaces by scanning the usual IRQ/port suspects 🔍 — yep, just vibing through the classic interrupt and port addresses looking for hardware to hook up.

but here's the tea ☕ and it's lowkey important: right now we do not scan the ide0 and ide1 address — and honestly? we should be doing that for non-PCI systems, or for systems with no PCI IDE legacy mode devices. so if that's your situation… yeah, it's giving gap in coverage 😭

ngl if you're the main character who fixes this, note that there are special cases to consider — like CS5510/20 👀 don't say i didn't warn you 💀

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👑 SEE ALSO 👑

• Kernel file ./drivers/ata/pata_legacy.c
• legacy_probe_add(9)
• legacy_set_mode(9)
• probe_chip_type(9)
• legacy_init_one(9)
• legacy_check_special_cases(9)

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and that's the whole vibe check ✨ this page lives over in ./drivers/ata, dated October 2026, and it's legacy_init(9) — slay, go read the source, periodt 💜🦋