arch/mips/include/asm/mach-generic/mc146818rtc.h

File Facts

System

Linux kernel

Corpus path

arch/mips/include/asm/mach-generic/mc146818rtc.h

Extension

.h

Size

764 bytes

Lines

33

Domain

Architecture Layer

Bucket

arch/mips

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/io.h

Detected Declarations

• function Copyright
• function CMOS_WRITE

Annotated Snippet

#ifndef __ASM_MACH_GENERIC_MC146818RTC_H
#define __ASM_MACH_GENERIC_MC146818RTC_H

#include <asm/io.h>

#define RTC_PORT(x)	(0x70 + (x))
#define RTC_IRQ		8

static inline unsigned char CMOS_READ(unsigned long addr)
{
	outb_p(addr, RTC_PORT(0));
	return inb_p(RTC_PORT(1));
}

static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
{
	outb_p(addr, RTC_PORT(0));
	outb_p(data, RTC_PORT(1));
}

#define RTC_ALWAYS_BCD	0

#endif /* __ASM_MACH_GENERIC_MC146818RTC_H */

Annotation

• Immediate include surface: `asm/io.h`.
• Detected declarations: `function Copyright`, `function CMOS_WRITE`.
• Atlas domain: Architecture Layer / arch/mips.
• 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.