drivers/net/ethernet/cavium/common/cavium_ptp.c

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/cavium/common/cavium_ptp.c

Extension

.c

Size

8919 bytes

Lines

348

Domain

Driver Families

Bucket

drivers/net

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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/timecounter.h
• linux/pci.h
• cavium_ptp.h

Detected Declarations

• function Copyright
• function cavium_ptp_put
• function cavium_ptp_adjfine
• function cavium_ptp_adjtime
• function cavium_ptp_gettime
• function cavium_ptp_settime
• function cavium_ptp_enable
• function cavium_ptp_cc_read
• function cavium_ptp_probe
• function cavium_ptp_remove
• export cavium_ptp_get
• export cavium_ptp_put

Annotated Snippet

static struct pci_driver cavium_ptp_driver = {
	.name = DRV_NAME,
	.id_table = cavium_ptp_id_table,
	.probe = cavium_ptp_probe,
	.remove = cavium_ptp_remove,
};

module_pci_driver(cavium_ptp_driver);

MODULE_DESCRIPTION(DRV_NAME);
MODULE_AUTHOR("Cavium Networks <support@cavium.com>");
MODULE_LICENSE("GPL v2");
MODULE_DEVICE_TABLE(pci, cavium_ptp_id_table);

Annotation

• Immediate include surface: `linux/device.h`, `linux/module.h`, `linux/timecounter.h`, `linux/pci.h`, `cavium_ptp.h`.
• Detected declarations: `function Copyright`, `function cavium_ptp_put`, `function cavium_ptp_adjfine`, `function cavium_ptp_adjtime`, `function cavium_ptp_gettime`, `function cavium_ptp_settime`, `function cavium_ptp_enable`, `function cavium_ptp_cc_read`, `function cavium_ptp_probe`, `function cavium_ptp_remove`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: pattern implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.