drivers/uio/uio_pci_generic_sva.c

File Facts

System

Linux kernel

Corpus path

drivers/uio/uio_pci_generic_sva.c

Extension

.c

Size

4192 bytes

Lines

188

Domain

Driver Families

Bucket

drivers/uio

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/device.h
• linux/module.h
• linux/pci.h
• linux/uio_driver.h
• linux/iommu.h

Detected Declarations

• struct uio_pci_sva_dev
• function irq_handler
• function uio_pci_sva_open
• function uio_pci_sva_release
• function probe
• function remove
• function pasid_show

Annotated Snippet

static struct pci_driver uio_pci_generic_sva_driver = {
	.name = "uio_pci_sva",
	.dev_groups = uio_pci_sva_attr_groups,
	.id_table = NULL,
	.probe = probe,
	.remove = remove,
};

module_pci_driver(uio_pci_generic_sva_driver);
MODULE_VERSION("0.0.01");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Yaxing Guo <guoyaxing@bosc.ac.cn>");
MODULE_DESCRIPTION("Generic UIO sva driver for PCI");

Annotation

• Immediate include surface: `linux/device.h`, `linux/module.h`, `linux/pci.h`, `linux/uio_driver.h`, `linux/iommu.h`.
• Detected declarations: `struct uio_pci_sva_dev`, `function irq_handler`, `function uio_pci_sva_open`, `function uio_pci_sva_release`, `function probe`, `function remove`, `function pasid_show`.
• Atlas domain: Driver Families / drivers/uio.
• 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.