arch/m68k/include/asm/mc146818rtc.h

File Facts

System

Linux kernel

Corpus path

arch/m68k/include/asm/mc146818rtc.h

Extension

.h

Size

598 bytes

Lines

28

Domain

Architecture Layer

Bucket

arch/m68k

Inferred role

Architecture Layer: implementation source

Status

source 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.

Dependency Surface

• asm/atarihw.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef _ASM_MC146818RTC_H
#define _ASM_MC146818RTC_H


#ifdef CONFIG_ATARI
/* RTC in Atari machines */

#include <asm/atarihw.h>

#define ATARI_RTC_PORT(x)	(TT_RTC_BAS + 2*(x))
#define RTC_ALWAYS_BCD	0

#define CMOS_READ(addr) ({ \
atari_outb_p((addr), ATARI_RTC_PORT(0)); \
atari_inb_p(ATARI_RTC_PORT(1)); \
})
#define CMOS_WRITE(val, addr) ({ \
atari_outb_p((addr), ATARI_RTC_PORT(0)); \
atari_outb_p((val), ATARI_RTC_PORT(1)); \
})
#endif /* CONFIG_ATARI */

#endif /* _ASM_MC146818RTC_H */

Annotation

• Immediate include surface: `asm/atarihw.h`.
• Atlas domain: Architecture Layer / arch/m68k.
• Implementation status: source 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.