drivers/watchdog/i6300esb.c

File Facts

System

Linux kernel

Corpus path

drivers/watchdog/i6300esb.c

Extension

.c

Size

10220 bytes

Lines

354

Domain

Driver Families

Bucket

drivers/watchdog

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/module.h
• linux/types.h
• linux/kernel.h
• linux/fs.h
• linux/mm.h
• linux/miscdevice.h
• linux/watchdog.h
• linux/pci.h
• linux/ioport.h
• linux/uaccess.h
• linux/io.h

Detected Declarations

• struct esb_dev
• function esb_unlock_registers
• function esb_timer_start
• function esb_timer_stop
• function esb_timer_keepalive
• function esb_timer_set_heartbeat
• function esb_getdevice
• function esb_initdevice
• function esb_probe
• function esb_remove

Annotated Snippet

static struct pci_driver esb_driver = {
	.name		= ESB_MODULE_NAME,
	.id_table	= esb_pci_tbl,
	.probe          = esb_probe,
	.remove         = esb_remove,
};

module_pci_driver(esb_driver);

MODULE_AUTHOR("Ross Biro and David Härdeman");
MODULE_DESCRIPTION("Watchdog driver for Intel 6300ESB chipsets");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/types.h`, `linux/kernel.h`, `linux/fs.h`, `linux/mm.h`, `linux/miscdevice.h`, `linux/watchdog.h`, `linux/pci.h`.
• Detected declarations: `struct esb_dev`, `function esb_unlock_registers`, `function esb_timer_start`, `function esb_timer_stop`, `function esb_timer_keepalive`, `function esb_timer_set_heartbeat`, `function esb_getdevice`, `function esb_initdevice`, `function esb_probe`, `function esb_remove`.
• Atlas domain: Driver Families / drivers/watchdog.
• 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.