STRUCT PCI_EPF_DRIVER(9)

💖 struct pci_epf_driver(9) 💖

okay bestie, welcome to the kernel API manual, this one's from struct pci_epf_driver(9) — we're literally about to meet the struct that represents the PCI EPF driver. like, the whole personality of an EPF driver lives in here. no cap. 🦋

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✨ SYNOPSIS ✨

here's the whole shape of it, copy-paste exact, do not touch:

struct pci_epf_driver {
    int (*probe)(struct pci_epf *epf, const struct pci_epf_device_id
*id);
    void (*remove)(struct pci_epf *epf);
    struct device_driver    driver;
    const struct pci_epf_ops *ops;
    struct module           *owner;
    struct list_head        epf_group;
    const struct pci_epf_device_id  *id_table;
 };

she's giving structured. she's giving organized. we stan a well-formed struct. 🎀

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💅 MEMBERS 💅

every field, one by one, because we do not skip. periodt.

• probe — the ops to perform when a new EPF device has been bound to the EPF driver. this is the "omg hi new device, let's go" moment 🫶
• remove — the ops to perform when the binding between the EPF device and EPF driver is broken 😭 it's giving breakup arc
• driver — the PCI EPF driver. yes that's the field, yes it's named driver, yes it lives inside the driver struct, don't think about it too hard 💀
• ops — the set of function pointers for performing EPF operations. a whole lil toolbox of function pointers, iconic ⭐
• owner — the owner of the module that registers the PCI EPF driver. someone has to hold the keys 👑
• epf_group — list of configfs group corresponding to the PCI EPF driver. list energy, struct list_head energy, we love to see it 🧚
• id_table — identifies EPF devices for probing. this is how we know who's who at the door 🔥

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🌈 SEE ALSO 🌈

go touch grass in these files and structs, iykyk:

Kernel file ./include/linux/pci-epf.h plus:

• struct pci_epf_header(9)
• struct pci_epf_ops(9)
• struct pci_epc_event_ops(9)
• struct pci_epf_bar_submap(9)
• struct pci_epf_bar(9)
• struct pci_epf_doorbell_msg(9)
• struct pci_epf(9)
• struct pci_epf_msix_tbl(9)

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lowkey a whole friend group of structs and you're about to meet all of them. bring snacks. 🍓

and that's the page, bestie — source is ./include/linux, dated October 2026, and we're officially done reading struct pci_epf_driver(9). slay, go write a driver, mwah 💜✨