device_iommu_capable(9)

💖 NAME 💖

Okay bestie, welcome to device_iommu_capable(9) from the Kernel API Manual — this one is literally here to check for a general IOMMU capability. That's the whole assignment, and it slays at it. ✨

🦋 SYNOPSIS 🦋

bool device_iommu_capable (struct device *dev , enum iommu_cap cap );

🎀 ARGUMENTS 🎀

• dev — the device to which the capability would be relevant, if available. Like, if it's around, this is the device we're asking about. 🫶
• cap — the IOMMU capability. That's the thing being checked, periodt. 💅

🌈 RETURN 🌈

It returns true if an IOMMU is present and supports the given capability for the given device; otherwise it returns false. That's it, no extra lore. 👑

🌸 SEE ALSO 🌸

Kernel file: ./drivers/iommu/iommu.c

The whole reference squad, in order and with zero skips:

• iommu_device_register(9)
• iommu_insert_resv_region(9)
• iommu_group_alloc(9)
• iommu_group_get_iommudata(9)
• iommu_group_set_iommudata(9)
• iommu_group_set_name(9)
• iommu_group_add_device(9)
• iommu_group_remove_device(9)
• iommu_group_mutex_assert(9)
• iommu_group_for_each_dev(9)
• iommu_group_get(9)
• iommu_group_ref_get(9)
• iommu_group_put(9)
• iommu_group_id(9)
• iommu_group_has_isolated_msi(9)
• iommu_set_fault_handler(9)
• iommu_paging_domain_alloc_flags(9)
• iommu_attach_device(9)
• iommu_get_domain_for_dev(9)
• iommu_driver_get_domain_for_dev(9)
• iommu_attach_group(9)
• iommu_unmap(9)
• iommu_unmap_fast(9)
• report_iommu_fault(9)
• iommu_get_resv_regions(9)
• iommu_put_resv_regions(9)
• iommu_setup_default_domain(9)
• iommu_device_use_default_domain(9)
• iommu_device_unuse_default_domain(9)
• iommu_group_claim_dma_owner(9)
• iommu_device_claim_dma_owner(9)
• iommu_group_release_dma_owner(9)
• iommu_device_release_dma_owner(9)
• iommu_group_dma_owner_claimed(9)
• iommu_replace_device_pasid(9)
• iommu_attach_handle_get(9)
• iommu_attach_group_handle(9)
• iommu_detach_group_handle(9)
• iommu_replace_group_handle(9)
• pci_dev_reset_iommu_prepare(9)
• pci_dev_reset_iommu_done(9)
• iommu_dma_prepare_msi(9)

Source/version: ./drivers/iommu, dated October 2026, and the page title is still device_iommu_capable(9) — cute little footer moment, mwah! 💜🎀