drivers/char/hw_random/cn10k-rng.c

File Facts

System

Linux kernel

Corpus path

drivers/char/hw_random/cn10k-rng.c

Extension

.c

Size

5422 bytes

Lines

229

Domain

Driver Families

Bucket

drivers/char

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.
• 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/hw_random.h
• linux/io.h
• linux/module.h
• linux/pci.h
• linux/pci_ids.h
• linux/delay.h
• linux/arm-smccc.h

Detected Declarations

• struct cn10k_rng
• function cn10k_is_extended_trng_regs_supported
• function reset_rng_health_state
• function check_rng_health
• function cn10k_read_trng
• function cn10k_rng_read
• function cn10k_rng_probe

Annotated Snippet

static struct pci_driver cn10k_rng_driver = {
	.name		= "cn10k_rng",
	.id_table	= cn10k_rng_id_table,
	.probe		= cn10k_rng_probe,
};

module_pci_driver(cn10k_rng_driver);
MODULE_AUTHOR("Sunil Goutham <sgoutham@marvell.com>");
MODULE_DESCRIPTION("Marvell CN10K HW RNG Driver");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/hw_random.h`, `linux/io.h`, `linux/module.h`, `linux/pci.h`, `linux/pci_ids.h`, `linux/delay.h`, `linux/arm-smccc.h`.
• Detected declarations: `struct cn10k_rng`, `function cn10k_is_extended_trng_regs_supported`, `function reset_rng_health_state`, `function check_rng_health`, `function cn10k_read_trng`, `function cn10k_rng_read`, `function cn10k_rng_probe`.
• Atlas domain: Driver Families / drivers/char.
• Implementation status: pattern implementation candidate.

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.