drivers/iommu/riscv/iommu-pci.c

File Facts

System

Linux kernel

Corpus path

drivers/iommu/riscv/iommu-pci.c

Extension

.c

Size

3377 bytes

Lines

129

Domain

Driver Families

Bucket

drivers/iommu

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/compiler.h
• linux/init.h
• linux/iommu.h
• linux/kernel.h
• linux/pci.h
• iommu-bits.h
• iommu.h

Detected Declarations

• function riscv_iommu_pci_probe
• function riscv_iommu_pci_remove
• function riscv_iommu_pci_shutdown

Annotated Snippet

static struct pci_driver riscv_iommu_pci_driver = {
	.name = KBUILD_MODNAME,
	.id_table = riscv_iommu_pci_tbl,
	.probe = riscv_iommu_pci_probe,
	.remove = riscv_iommu_pci_remove,
	.shutdown = riscv_iommu_pci_shutdown,
	.driver = {
		.suppress_bind_attrs = true,
	},
};

builtin_pci_driver(riscv_iommu_pci_driver);

Annotation

• Immediate include surface: `linux/compiler.h`, `linux/init.h`, `linux/iommu.h`, `linux/kernel.h`, `linux/pci.h`, `iommu-bits.h`, `iommu.h`.
• Detected declarations: `function riscv_iommu_pci_probe`, `function riscv_iommu_pci_remove`, `function riscv_iommu_pci_shutdown`.
• Atlas domain: Driver Families / drivers/iommu.
• Implementation status: pattern implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.