drivers/char/hw_random/cavium-rng-vf.c

File Facts

System

Linux kernel

Corpus path

drivers/char/hw_random/cavium-rng-vf.c

Extension

.c

Size

6271 bytes

Lines

271

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
• asm/arch_timer.h

Detected Declarations

• struct cavium_rng
• function is_octeontx
• function rng_get_coprocessor_clkrate
• function check_rng_health
• function cavium_rng_read
• function cavium_map_pf_regs
• function cavium_rng_probe_vf
• function cavium_rng_remove_vf

Annotated Snippet

static struct pci_driver cavium_rng_vf_driver = {
	.name		= "cavium_rng_vf",
	.id_table	= cavium_rng_vf_id_table,
	.probe		= cavium_rng_probe_vf,
	.remove		= cavium_rng_remove_vf,
};
module_pci_driver(cavium_rng_vf_driver);

MODULE_AUTHOR("Omer Khaliq <okhaliq@caviumnetworks.com>");
MODULE_DESCRIPTION("Cavium ThunderX Random Number Generator VF support");
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`, `asm/arch_timer.h`.
• Detected declarations: `struct cavium_rng`, `function is_octeontx`, `function rng_get_coprocessor_clkrate`, `function check_rng_health`, `function cavium_rng_read`, `function cavium_map_pf_regs`, `function cavium_rng_probe_vf`, `function cavium_rng_remove_vf`.
• 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.