page.h File Reference

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

Go to the source code of this file.

Data Structures
struct	pte_t
struct	pmd_t
struct	pgd_t
struct	pgprot_t

Macros
#define	PAGE_SHIFT   12
#define	PAGE_SIZE   (_AC(1, UL) << PAGE_SHIFT)
#define	PAGE_MASK   (~(PAGE_SIZE-1))
#define	clear_user_page(page, vaddr, pg)   clear_page(page)
#define	copy_user_page(to, from, vaddr, pg)   copy_page(to, from)
#define	__alloc_zeroed_user_highpage(movableflags, vma, vaddr)   alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
#define	__HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
#define	pte_val(x)   ((x).pte)
#define	PTE_MASK   PAGE_MASK
#define	pmd_val(x)   ((x).pmd)
#define	pgd_val(x)   ((x).pgd)
#define	pgprot_val(x)   ((x).pgprot)
#define	__pte(x)   ((pte_t) { (x) } )
#define	__pmd(x)   ((pmd_t) { (x) } )
#define	__pgd(x)   ((pgd_t) { (x) } )
#define	__pgprot(x)   ((pgprot_t) { (x) } )
#define	__MEMORY_START   CONFIG_MEMORY_START
#define	__MEMORY_SIZE   CONFIG_MEMORY_SIZE
#define	__PAGE_OFFSET   (0x00000000)
#define	PAGE_OFFSET   ((unsigned long)__PAGE_OFFSET)
#define	__pa(x)   ((unsigned long)(x) - PAGE_OFFSET)
#define	__va(x)   ((void *)((unsigned long)(x) + PAGE_OFFSET))
#define	PFN_BASE   (CONFIG_MEMORY_START >> PAGE_SHIFT)
#define	ARCH_PFN_OFFSET   PFN_BASE
#define	pfn_valid(pfn)   (((pfn) - PFN_BASE) < max_mapnr)
#define	virt_to_page(kaddr)   pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define	virt_addr_valid(kaddr)   pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define	VM_DATA_DEFAULT_FLAGS
#define	devmem_is_allowed(x)   1

Typedefs
typedef struct page *	pgtable_t

Functions
void	clear_page (void *to)
void	copy_page (void *to, void *from)

Macro Definition Documentation

#define __alloc_zeroed_user_highpage	(		movableflags,
			vma,
			vaddr
	)		alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)

Definition at line 19 of file page.h.

#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE

Definition at line 21 of file page.h.

#define __MEMORY_SIZE   CONFIG_MEMORY_SIZE

Definition at line 60 of file page.h.

#define __MEMORY_START   CONFIG_MEMORY_START

Definition at line 59 of file page.h.

#define __pa

(

x

)

((unsigned long)(x) - PAGE_OFFSET)

Definition at line 69 of file page.h.

#define __PAGE_OFFSET   (0x00000000)

Definition at line 65 of file page.h.

#define __pgd

(

x

)

((pgd_t) { (x) } )

Definition at line 41 of file page.h.

#define __pgprot

(

x

)

((pgprot_t) { (x) } )

Definition at line 42 of file page.h.

#define __pmd

(

x

)

((pmd_t) { (x) } )

Definition at line 40 of file page.h.

#define __pte

(

x

)

((pte_t) { (x) } )

Definition at line 39 of file page.h.

#define __va

(

x

)

((void *)((unsigned long)(x) + PAGE_OFFSET))

Definition at line 70 of file page.h.

#define ARCH_PFN_OFFSET   PFN_BASE

Definition at line 74 of file page.h.

#define clear_user_page	(		page,
			vaddr,
			pg
	)		clear_page(page)

Definition at line 16 of file page.h.

#define copy_user_page	(		to,
			from,
			vaddr,
			pg
	)		copy_page(to, from)

Definition at line 17 of file page.h.

#define devmem_is_allowed

(

x

)

1

Definition at line 84 of file page.h.

#define PAGE_MASK   (~(PAGE_SIZE-1))

Definition at line 9 of file page.h.

#define PAGE_OFFSET   ((unsigned long)__PAGE_OFFSET)

Definition at line 68 of file page.h.

#define PAGE_SHIFT   12

Definition at line 7 of file page.h.

#define PAGE_SIZE   (_AC(1, UL) << PAGE_SHIFT)

Definition at line 8 of file page.h.

#define PFN_BASE   (CONFIG_MEMORY_START >> PAGE_SHIFT)

Definition at line 73 of file page.h.

#define pfn_valid

(

pfn

)

(((pfn) - PFN_BASE) < max_mapnr)

Definition at line 75 of file page.h.

#define pgd_val

(

x

)

((x).pgd)

Definition at line 36 of file page.h.

#define pgprot_val

(

x

)

((x).pgprot)

Definition at line 37 of file page.h.

#define pmd_val

(

x

)

((x).pmd)

Definition at line 35 of file page.h.

#define PTE_MASK   PAGE_MASK

Definition at line 30 of file page.h.

#define pte_val

(

x

)

((x).pte)

Definition at line 29 of file page.h.

#define virt_addr_valid

(

kaddr

)

pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 79 of file page.h.

#define virt_to_page

(

kaddr

)

pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 78 of file page.h.

#define VM_DATA_DEFAULT_FLAGS

Value:

(VM_READ | VM_WRITE | VM_EXEC | \
                 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC )

Definition at line 81 of file page.h.

Typedef Documentation

typedef struct page* pgtable_t

Definition at line 33 of file page.h.

Function Documentation

void clear_page

(

void *

to

)

void copy_page	(	void *	to,
		void *	from
	)

Definition at line 22 of file nommu.c.