drivers/net/can/sja1000/f81601.c

File Facts

System

Linux kernel

Corpus path

drivers/net/can/sja1000/f81601.c

Extension

.c

Size

5232 bytes

Lines

212

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/kernel.h
• linux/module.h
• linux/interrupt.h
• linux/netdevice.h
• linux/delay.h
• linux/slab.h
• linux/pci.h
• linux/can/dev.h
• linux/io.h
• sja1000.h

Detected Declarations

• struct f81601_pci_card
• function f81601_pci_read_reg
• function f81601_pci_write_reg
• function f81601_pci_remove
• function f81601_pci_probe

Annotated Snippet

static struct pci_driver f81601_pci_driver = {
	.name =	"f81601",
	.id_table = f81601_pci_tbl,
	.probe = f81601_pci_probe,
	.remove = f81601_pci_remove,
};

MODULE_DESCRIPTION("Fintek F81601 PCIE to 2 CANBUS adaptor driver");
MODULE_AUTHOR("Peter Hong <peter_hong@fintek.com.tw>");
MODULE_LICENSE("GPL v2");

module_pci_driver(f81601_pci_driver);

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/interrupt.h`, `linux/netdevice.h`, `linux/delay.h`, `linux/slab.h`, `linux/pci.h`, `linux/can/dev.h`.
• Detected declarations: `struct f81601_pci_card`, `function f81601_pci_read_reg`, `function f81601_pci_write_reg`, `function f81601_pci_remove`, `function f81601_pci_probe`.
• 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.