arch/mips/include/asm/mach-tx49xx/ioremap.h

File Facts

System

Linux kernel

Corpus path

arch/mips/include/asm/mach-tx49xx/ioremap.h

Extension

.h

Size

772 bytes

Lines

31

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/types.h

Detected Declarations

• function plat_iounmap

Annotated Snippet

#ifndef __ASM_MACH_TX49XX_IOREMAP_H
#define __ASM_MACH_TX49XX_IOREMAP_H

#include <linux/types.h>

static inline void __iomem *plat_ioremap(phys_addr_t offset, unsigned long size,
	unsigned long flags)
{
#ifdef CONFIG_64BIT
#define TXX9_DIRECTMAP_BASE	0xfff000000ul
#else
#define TXX9_DIRECTMAP_BASE	0xff000000ul
#endif
	if (offset >= TXX9_DIRECTMAP_BASE &&
	    offset < TXX9_DIRECTMAP_BASE + 0x400000)
		return (void __iomem *)(unsigned long)(int)offset;
	return NULL;
}

static inline int plat_iounmap(const volatile void __iomem *addr)
{
	return (unsigned long)addr >=
		(unsigned long)(int)(TXX9_DIRECTMAP_BASE & 0xffffffff);
}

#endif /* __ASM_MACH_TX49XX_IOREMAP_H */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `function plat_iounmap`.
• 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.