iort_get_device_domain(9)

🎀 iort_get_device_domain(9) 🎀

okay bestie, welcome to the Kernel API Manual 💅 this page is literally about finding the MSI domain related to a device. no cap, that’s the whole assignment.

🌸 NAME 🌸

iort_get_device_domain — Find MSI domain related to a device

✨ SYNOPSIS ✨

struct irq_domain * iort_get_device_domain (struct device *dev , u32 id , enum irq_domain_bus_token bus_token );

🫶 ARGUMENTS 🫶

• dev — The device. yes ma’am, the actual device in question.
• id — Requester ID for the device.
• bus_token — irq domain bus token.

💖 RETURN 💖

Returns the MSI domain for this device, NULL otherwise. that’s it, that’s the return vibe 😭

🦋 SEE ALSO 🦋

Kernel file: ./drivers/acpi/arm64/iort.c — go read it, iykyk.

• iort_set_fwnode(9)
• iort_get_fwnode(9)
• iort_delete_fwnode(9)
• iort_get_iort_node(9)
• iort_register_domain_token(9)
• iort_deregister_domain_token(9)
• iort_find_domain_token(9)
• iort_msi_map_id(9)
• iort_msi_xlate(9)
• iort_pmsi_get_msi_info(9)
• iort_dev_find_its_id(9)
• iort_get_platform_device_domain(9)
• iort_iommu_get_resv_regions(9)
• iort_get_rmr_sids(9)
• iort_put_rmr_sids(9)
• iort_iommu_configure_id(9)
• iort_dma_get_ranges(9)
• iort_add_platform_device(9)

xoxo, your kernel bestie 💖 that’s the tea from the Kernel API Manual, source/version ./drivers/acpi/arm64, dated October 2026 🫶✨ periodt.