drivers/dma/amd/ae4dma/ae4dma-pci.c

File Facts

System

Linux kernel

Corpus path

drivers/dma/amd/ae4dma/ae4dma-pci.c

Extension

.c

Size

3187 bytes

Lines

157

Domain

Driver Families

Bucket

drivers/dma

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

• ae4dma.h

Detected Declarations

• function Copyright
• function ae4_free_irqs
• function ae4_deinit
• function ae4_pci_probe
• function ae4_pci_remove

Annotated Snippet

static struct pci_driver ae4_pci_driver = {
	.name = "ae4dma",
	.id_table = ae4_pci_table,
	.probe = ae4_pci_probe,
	.remove = ae4_pci_remove,
};

module_pci_driver(ae4_pci_driver);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("AMD AE4DMA driver");

Annotation

• Immediate include surface: `ae4dma.h`.
• Detected declarations: `function Copyright`, `function ae4_free_irqs`, `function ae4_deinit`, `function ae4_pci_probe`, `function ae4_pci_remove`.
• Atlas domain: Driver Families / drivers/dma.
• 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.