page.h File Reference

#include <asm/setup.h>
#include <asm/page_offset.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   (1UL << PAGE_SHIFT)
#define	PAGE_MASK   (~(PAGE_SIZE-1))
#define	get_user_page(vaddr)   __get_free_page(GFP_KERNEL)
#define	free_user_page(page, addr)   free_page(addr)
#define	clear_page(page)   memset((page), 0, PAGE_SIZE)
#define	copy_page(to, from)   memcpy((to), (from), PAGE_SIZE)
#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	pmd_val(x)   ((&x)->pmd[0])
#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	PAGE_OFFSET   (PAGE_OFFSET_RAW)
#define	__pa(vaddr)   virt_to_phys(vaddr)
#define	__va(paddr)   phys_to_virt((unsigned long)paddr)
#define	virt_to_pfn(kaddr)   (__pa(kaddr) >> PAGE_SHIFT)
#define	pfn_to_virt(pfn)   __va((pfn) << PAGE_SHIFT)
#define	MAP_NR(addr)   (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
#define	virt_to_page(addr)   (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
#define	page_to_virt(page)   ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
#define	pfn_valid(page)   (page < max_mapnr)
#define	ARCH_PFN_OFFSET   (PAGE_OFFSET >> PAGE_SHIFT)
#define	virt_addr_valid(kaddr)

Typedefs
typedef struct page *	pgtable_t

Variables
unsigned long	memory_start
unsigned long	memory_end

Macro Definition Documentation

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

Definition at line 23 of file page.h.

#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE

Definition at line 25 of file page.h.

#define __pa

(

vaddr

)

virt_to_phys(vaddr)

Definition at line 57 of file page.h.

#define __pgd

(

x

)

((pgd_t) { (x) } )

Definition at line 43 of file page.h.

#define __pgprot

(

x

)

((pgprot_t) { (x) } )

Definition at line 44 of file page.h.

#define __pmd

(

x

)

((pmd_t) { (x) } )

Definition at line 42 of file page.h.

#define __pte

(

x

)

((pte_t) { (x) } )

Definition at line 41 of file page.h.

#define __va

(

paddr

)

phys_to_virt((unsigned long)paddr)

Definition at line 58 of file page.h.

#define ARCH_PFN_OFFSET   (PAGE_OFFSET >> PAGE_SHIFT)

Definition at line 68 of file page.h.

#define clear_page

(

page

)

memset((page), 0, PAGE_SIZE)

Definition at line 17 of file page.h.

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

Definition at line 20 of file page.h.

#define copy_page	(		to,
			from
	)		memcpy((to), (from), PAGE_SIZE)

Definition at line 18 of file page.h.

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

Definition at line 21 of file page.h.

#define free_user_page	(		page,
			addr
	)		free_page(addr)

Definition at line 15 of file page.h.

#define get_user_page

(

vaddr

)

__get_free_page(GFP_KERNEL)

Definition at line 14 of file page.h.

#define MAP_NR

(

addr

)

(((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)

Definition at line 63 of file page.h.

#define PAGE_MASK   (~(PAGE_SIZE-1))

Definition at line 8 of file page.h.

#define PAGE_OFFSET   (PAGE_OFFSET_RAW)

Definition at line 53 of file page.h.

#define PAGE_SHIFT   (12)

Definition at line 6 of file page.h.

#define PAGE_SIZE   (1UL << PAGE_SHIFT)

Definition at line 7 of file page.h.

#define page_to_virt

(

page

)

((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)

Definition at line 65 of file page.h.

#define pfn_to_virt

(

pfn

)

__va((pfn) << PAGE_SHIFT)

Definition at line 61 of file page.h.

#define pfn_valid

(

page

)

(page < max_mapnr)

Definition at line 66 of file page.h.

#define pgd_val

(

x

)

((x).pgd)

Definition at line 38 of file page.h.

#define pgprot_val

(

x

)

((x).pgprot)

Definition at line 39 of file page.h.

#define pmd_val

(

x

)

((&x)->pmd[0])

Definition at line 37 of file page.h.

#define pte_val

(

x

)

((x).pte)

Definition at line 36 of file page.h.

#define virt_addr_valid

(

kaddr

)

Value:

(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
                ((void *)(kaddr) < (void *)memory_end))

Definition at line 70 of file page.h.

#define virt_to_page

(

addr

)

(mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))

Definition at line 64 of file page.h.

#define virt_to_pfn

(

kaddr

)

(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 60 of file page.h.

Typedef Documentation

typedef struct page* pgtable_t

Definition at line 34 of file page.h.

Variable Documentation

unsigned long memory_end

Definition at line 42 of file setup.c.

unsigned long memory_start

Definition at line 42 of file setup.c.