drivers/uio/uio_pci_generic.c

File Facts

System

Linux kernel

Corpus path

drivers/uio/uio_pci_generic.c

Extension

.c

Size

4168 bytes

Lines

150

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/slab.h
• linux/uio_driver.h

Detected Declarations

• struct uio_pci_generic_dev
• function to_uio_pci_generic_dev
• function release
• function irqhandler
• function probe

Annotated Snippet

static struct pci_driver uio_pci_driver = {
	.name = "uio_pci_generic",
	.id_table = NULL, /* only dynamic id's */
	.probe = probe,
};

module_pci_driver(uio_pci_driver);
MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);

Annotation

• Immediate include surface: `linux/device.h`, `linux/module.h`, `linux/pci.h`, `linux/slab.h`, `linux/uio_driver.h`.
• Detected declarations: `struct uio_pci_generic_dev`, `function to_uio_pci_generic_dev`, `function release`, `function irqhandler`, `function probe`.
• 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.