arch/x86/kernel/i8237.c

File Facts

System

Linux kernel

Corpus path

arch/x86/kernel/i8237.c

Extension

.c

Size

2019 bytes

Lines

81

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/dmi.h
• linux/init.h
• linux/syscore_ops.h
• asm/dma.h
• asm/x86_init.h

Detected Declarations

• function controller
• function i8237A_init_ops
• module init i8237A_init_ops

Annotated Snippet

device_initcall(i8237A_init_ops);

Annotation

• Immediate include surface: `linux/dmi.h`, `linux/init.h`, `linux/syscore_ops.h`, `asm/dma.h`, `asm/x86_init.h`.
• Detected declarations: `function controller`, `function i8237A_init_ops`, `module init i8237A_init_ops`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: integration 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.