STRUCT MEI_AUX_DEVICE(9)

💅 struct mei_aux_device(9) — mei auxiliary device

okay so bestie, you're in the Kernel API Manual and this is the struct mei_aux_device page — it's the lil struct that describes a mei auxiliary device ✨ lowkey adorable, highkey useful. Let's get into it 🫶

🌸 SYNOPSIS 🌸

struct mei_aux_device {
    struct auxiliary_device aux_dev;
    int irq;
    struct resource bar;
    struct resource ext_op_mem;
    bool slow_firmware;
 };

That's the whole vibe — five members, no cap. Copied exactly, character for character, so you can trust it 💖

👑 Members 👑

• aux_dev — the auxiliary device object itself. This is the main character of the struct, fr fr 🎀
• irq — the interrupt that drives the mei auxiliary device. It's an int, and it's the thing poking your device when stuff happens ⚡
• bar — the mmio resource bar reserved for the mei auxiliary device. A struct resource, reserved, and it's yours 🌈
• ext_op_mem — a struct resource for the extend operational memory used in graphics PXP mode. iykyk 🙈
• slow_firmware — a bool that's true when the device has slow underlying firmware. And babes, listen: such firmware will require you to use larger operation timeouts. Not a vibe, but it's the truth 😭

⚠️ real talk: don't skip that slow_firmware field. If the underlying firmware is slow, you genuinely need bigger operation timeouts — that's not me being dramatic, that's the page 💀

🔥 SEE ALSO 🔥

• Kernel file ./include/linux/mei_aux.h — go read it, it's giving source of truth 🦋

okay that's the whole thing bestie, you ate that 💅✨

this page lives in ./include/linux, part of the Kernel API Manual, dated October 2026 — mwah, signed off with love 🎀