arch/mips/include/asm/dec/ioasic.h

File Facts

System

Linux kernel

Corpus path

arch/mips/include/asm/dec/ioasic.h

Extension

.h

Size

655 bytes

Lines

35

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

• linux/spinlock.h
• linux/types.h

Detected Declarations

• function ioasic_write
• function ioasic_read

Annotated Snippet

#ifndef __ASM_DEC_IOASIC_H
#define __ASM_DEC_IOASIC_H

#include <linux/spinlock.h>
#include <linux/types.h>

extern spinlock_t ioasic_ssr_lock;

extern volatile u32 *ioasic_base;

static inline void ioasic_write(unsigned int reg, u32 v)
{
	ioasic_base[reg / 4] = v;
}

static inline u32 ioasic_read(unsigned int reg)
{
	return ioasic_base[reg / 4];
}

extern void init_ioasic_irqs(int base);

extern int dec_ioasic_clocksource_init(void);

#endif /* __ASM_DEC_IOASIC_H */

Annotation

• Immediate include surface: `linux/spinlock.h`, `linux/types.h`.
• Detected declarations: `function ioasic_write`, `function ioasic_read`.
• 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.