pci_dma_configure(9)

💖 pci_dma_configure(9) 💖

okay so welcome to the Kernel API Manual bestie, today we're looking at pci_dma_configure — and yes it's a whole function, and yes it's lowkey iconic. let's get into it 🎀

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✨ NAME ✨

pci_dma_configure — Setup DMA configuration 💅

like, literally just setting up the DMA config. that's the whole vibe.

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🌸 SYNOPSIS 🌸

int pci_dma_configure (struct device *dev );

look at her. one argument. returning an int. main character energy fr fr 🦋

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🧚 ARGUMENTS 🧚

• dev — ptr to dev structure ✨ that's it, that's the whole argument. a pointer to the device struct, no cap.

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👑 DESCRIPTION 👑

so what does she actually do? 💀

this function updates a PCI device's DMA configuration, and the way she does it is by pulling the same info from the OF node or the ACPI node of the host bridge's parent (if any). that's the tea. 🍓

basically: same info, from the OF node or the ACPI node of the host bridge's parent — if any — and then she updates the PCI device's DMA configuration with it. periodt. 💜

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🌈 SEE ALSO 🌈

okay this list is LONG and we're not skipping a single one, so buckle up bestie, iykyk 😭

Kernel file ./drivers/pci/pci-driver.c — and then the whole squad:

• do_pci_add_dynid(9)
• pci_add_dynid(9)
• do_pci_match_id(9)
• pci_match_id(9)
• pci_match_device(9)
• new_id_store(9)
• remove_id_store(9)
• __pci_device_probe(9)
• pci_restore_standard_config(9)
• __pci_register_driver(9)
• pci_unregister_driver(9)
• pci_dev_driver(9)
• pci_bus_match(9)
• pci_dev_get(9)
• pci_dev_put(9)
• pci_uevent_ers(9)

go read them all, i believe in you 🫶🔥

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ngl this one's short but she ate. no notes. 💅

and that's a wrap on the Kernel API Manual page for pci_dma_configure(9) — brought to you by ./drivers/pci, dated October 2026. mwah, stan this manpage, bye bestie 💖✨🎀🦋🌸💅🫶