STRUCT CDX_CONTROLLER(9)

💅 struct cdx_controller(9) 💅

okay bestie, welcome to the Kernel API Manual — we're doing struct cdx_controller(9) today and honestly? she's kind of a big deal. this is the CDX controller object, the main character of the whole controller situation. let's get into it 🎀

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✨ NAME ✨

struct cdx_controller — the CDX controller object. that's her. that's the whole vibe. 👑

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🌸 SYNOPSIS 🌸

like, here's what she actually looks like. type her out exactly, no cap:

struct cdx_controller {
    struct device *dev;
    void *priv;
    struct irq_domain *msi_domain;
    u32 id;
    bool controller_registered;
    struct cdx_ops *ops;
 };

yes the closing brace has an extra space before it in the original and I'm keeping it because I respect her. 🫶

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🦋 Members 🦋

okay so every single field, one by one, no skipping, we're being thorough because that's the whole point:

• dev — the Linux device that's associated with this CDX controller. her little Linux-device bestie. 💖
• priv — private data. that's it. that's the description. it's private, mind your business 🙈
• msi_domain — the MSI domain. ✨
• id — the controller ID. it's a u32, it's an ID, it does what it says 🎀
• controller_registered — a bool that tells you if the controller is registered with the bus. true = she's on the bus, living her life. false = she is not. 🚌
• ops — the CDX controller ops. a pointer to struct cdx_ops, the operations situation. 💅

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💀 SEE ALSO 💀

okay the receipts, the whole friend group, go check them out:

Kernel file ./include/linux/cdx/cdx_bus.h, plus CDX_DEVICE(9), CDX_DEVICE_DRIVER_OVERRIDE(9), struct cdx_ops(9), struct cdx_device(9), struct cdx_driver(9), __cdx_driver_register(9), cdx_driver_unregister(9), cdx_dev_reset(9), cdx_set_master(9), cdx_clear_master(9), cdx_enable_msi(9), and cdx_disable_msi(9). that's the whole crew, go say hi 🌈

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ngl there are no options, no exit statuses, no warnings and no bugs listed on this page — she's a struct, not a command, so this is genuinely the whole thing. don't go looking for more, bestie, there isn't more ✨

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and that's the page!! slay 🧚 source/version is ./include/linux/cdx and it's dated October 2026 — wrote it down so you can cite me later, mwah 💜🍓