arch/m68k/include/asm/page.h

Source file repositories/reference/linux-study-clean/arch/m68k/include/asm/page.h

File Facts

System
Linux kernel
Corpus path
arch/m68k/include/asm/page.h
Extension
.h
Size
1422 bytes
Lines
63
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _M68K_PAGE_H
#define _M68K_PAGE_H

#include <linux/const.h>
#include <asm/setup.h>
#include <asm/page_offset.h>

#include <vdso/page.h>

#define PAGE_OFFSET	(PAGE_OFFSET_RAW)

#ifndef __ASSEMBLER__

/*
 * These are used to make use of C type-checking..
 */
#if !defined(CONFIG_MMU) || CONFIG_PGTABLE_LEVELS == 3
typedef struct { unsigned long pmd; } pmd_t;
#define pmd_val(x)	((&x)->pmd)
#define __pmd(x)	((pmd_t) { (x) } )
#endif

typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pgd; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;

#if defined(CONFIG_SUN3)
/*
 * Sun3 still uses the asm-generic/pgalloc.h code and thus needs this
 * definition. It would be possible to unify Sun3 and ColdFire pgalloc and have
 * all of m68k use the same type.
 */
typedef struct page *pgtable_t;
#else
typedef pte_t *pgtable_t;
#endif

#define pte_val(x)	((x).pte)
#define pgd_val(x)	((x).pgd)
#define pgprot_val(x)	((x).pgprot)

#define __pte(x)	((pte_t) { (x) } )
#define __pgd(x)	((pgd_t) { (x) } )
#define __pgprot(x)	((pgprot_t) { (x) } )

extern unsigned long _rambase;
extern unsigned long _ramstart;
extern unsigned long _ramend;

#endif /* !__ASSEMBLER__ */

#ifdef CONFIG_MMU
#include <asm/page_mm.h>
#else
#include <asm/page_no.h>
#endif

#include <asm-generic/getorder.h>
#include <asm-generic/memory_model.h>

#endif /* _M68K_PAGE_H */

Annotation

Implementation Notes