eeh_addr_cache_get_dev(9)

💖 NAME 💖

okay so bestie, welcome to the Kernel API Manual entry for eeh_addr_cache_get_dev — it's literally “get device, given only address.” like, you show up with just an address and it's like say less, here's your device 🫶

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✨ SYNOPSIS ✨

struct eeh_dev * eeh_addr_cache_get_dev (unsigned long addr );

that's the whole vibe: you pass an unsigned long addr, and you get back a struct eeh_dev *. iconic.

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🎀 ARGUMENTS 🎀

• addr — the mmio (PIO) phys address or i/o port number. that's the address-ish thing you're trying to look up, bestie 💅

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🌸 DESCRIPTION 🌸

so here's the tea: you give this function an mmio phys address, or a port number, and it finds the pci device that implements that address. matching address to device — that's the whole quest 🔥

I/O port numbers are assumed to be offset from zero — that is, they do not have pci_io_addr added in. important detail, don't skip it 🙈

and yes, it is safe to call this function within an interrupt. fr fr, interrupt-safe ✅

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🦋 SEE ALSO 🦋

• Kernel file ./arch/powerpc/kernel/eeh_cache.c Overview(9)
• eeh_addr_cache_insert_dev(9)
• eeh_addr_cache_rmv_dev(9)
• eeh_addr_cache_init(9)

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mwah 💋 this lil page comes from the ./arch/powerpc/kernel source/version, dated October 2026 — slay and goodbye, bestie 🎀✨