libie_pci_init_dev(9)

💅 libie_pci_init_dev — a kernel API manual page (section 9, bestie)

okay so real talk, this is libie_pci_init_dev(9) from the Kernel API Manual, section 9, and it's genuinely such a glow-up moment for your PCI device. she does everything: wakes the device up, asks for her memory, sorts out her DMA masks, and hits the bus-mastering switch. main character energy only ✨

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🎀 NAME 🎀

libie_pci_init_dev — enable and configure the device, periodt.

🌸 SYNOPSIS 🌸

int libie_pci_init_dev (struct pci_dev *pdev );

🦋 ARGUMENTS 🦋

• pdev — the PCI device information. that's your girl right there, the struct that tells us which device we're setting up 💖

✨ DESCRIPTION ✨

okay so what she actually does, no cap:

• enables the device 👑
• requests memory regions 🧚
• sets the 64-bit DMA mask and the coherent DMA mask 🌈
• enables bus-mastering 🔥

like, that's the whole vibe check. everything's in there, nothing extra, and honestly? she ate.

lowkey important: DMA masks and bus-mastering are not optional little accessories here — they're part of the package, so don't skip the setup and expect the device to slay on its own 💀

💜 RETURN 💜

0 on success, -errno on failure. that's it, that's the whole mood 🫶

🍓 SEE ALSO 🍓

Kernel file ./drivers/net/ethernet/intel/libie/pci.c

• libie_find_mmio_region(9)
• __libie_pci_get_mmio_addr(9)
• __libie_pci_map_mmio_region(9)
• libie_pci_unmap_fltr_regs(9)
• libie_pci_unmap_all_mmio_regions(9)

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and that's the page, bestie 🎀 brought to you by the source ./drivers/net/ethernet/intel/l..., dated October 2026, filed under libie_pci_init_dev(9) — mwah, go read the whole intel libie family, iykyk 💅