page.h File Reference

#include <asm/virtconvert.h>
#include <asm/mem-layout.h>
#include <asm/sections.h>
#include <asm/setup.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	pud_t
struct	pgd_t
struct	pgprot_t

Macros
#define	get_user_page(vaddr)   __get_free_page(GFP_KERNEL)
#define	free_user_page(page, addr)   free_page(addr)
#define	clear_page(pgaddr)   memset((pgaddr), 0, PAGE_SIZE)
#define	copy_page(to, from)   memcpy((to), (from), PAGE_SIZE)
#define	clear_user_page(pgaddr, vaddr, page)   memset((pgaddr), 0, PAGE_SIZE)
#define	copy_user_page(vto, vfrom, vaddr, topg)   memcpy((vto), (vfrom), PAGE_SIZE)
#define	pte_val(x)   ((x).pte)
#define	pmd_val(x)   ((x).ste[0])
#define	pud_val(x)   ((x).pue[0])
#define	pgd_val(x)   ((x).pge[0])
#define	pgprot_val(x)   ((x).pgprot)
#define	__pte(x)   ((pte_t) { (x) } )
#define	__pmd(x)   ((pmd_t) { (x) } )
#define	__pud(x)   ((pud_t) { (x) } )
#define	__pgd(x)   ((pgd_t) { (x) } )
#define	__pgprot(x)   ((pgprot_t) { (x) } )
#define	PTE_MASK   PAGE_MASK
#define	devmem_is_allowed(pfn)   1
#define	__pa(vaddr)   virt_to_phys((void *) (unsigned long) (vaddr))
#define	__va(paddr)   phys_to_virt((unsigned long) (paddr))
#define	pfn_to_kaddr(pfn)   __va((pfn) << PAGE_SHIFT)
#define	ARCH_PFN_OFFSET   (PAGE_OFFSET >> PAGE_SHIFT)
#define	pfn_valid(pfn)   ((pfn) >= min_low_pfn && (pfn) < max_low_pfn)
#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

Typedefs
typedef struct page *	pgtable_t

Variables
unsigned long	max_low_pfn
unsigned long	min_low_pfn
unsigned long	max_pfn

Macro Definition Documentation

#define __pa

(

vaddr

)

virt_to_phys((void *) (unsigned long) (vaddr))

Definition at line 45 of file page.h.

#define __pgd

(

x

)

((pgd_t) { (x) } )

Definition at line 39 of file page.h.

#define __pgprot

(

x

)

((pgprot_t) { (x) } )

Definition at line 40 of file page.h.

#define __pmd

(

x

)

((pmd_t) { (x) } )

Definition at line 37 of file page.h.

#define __pte

(

x

)

((pte_t) { (x) } )

Definition at line 36 of file page.h.

#define __pud

(

x

)

((pud_t) { (x) } )

Definition at line 38 of file page.h.

#define __va

(

paddr

)

phys_to_virt((unsigned long) (paddr))

Definition at line 46 of file page.h.

#define ARCH_PFN_OFFSET   (PAGE_OFFSET >> PAGE_SHIFT)

Definition at line 57 of file page.h.

#define clear_page

(

pgaddr

)

memset((pgaddr), 0, PAGE_SIZE)

Definition at line 14 of file page.h.

#define clear_user_page	(		pgaddr,
			vaddr,
			page
	)		memset((pgaddr), 0, PAGE_SIZE)

Definition at line 17 of file page.h.

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

Definition at line 15 of file page.h.

#define copy_user_page	(		vto,
			vfrom,
			vaddr,
			topg
	)		memcpy((vto), (vfrom), PAGE_SIZE)

Definition at line 18 of file page.h.

#define devmem_is_allowed

(

pfn

)

1

Definition at line 43 of file page.h.

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

Definition at line 12 of file page.h.

#define get_user_page

(

vaddr

)

__get_free_page(GFP_KERNEL)

Definition at line 11 of file page.h.

#define pfn_to_kaddr

(

pfn

)

__va((pfn) << PAGE_SHIFT)

Definition at line 48 of file page.h.

#define pfn_valid

(

pfn

)

((pfn) >= min_low_pfn && (pfn) < max_low_pfn)

Definition at line 58 of file page.h.

#define pgd_val

(

x

)

((x).pge[0])

Definition at line 33 of file page.h.

#define pgprot_val

(

x

)

((x).pgprot)

Definition at line 34 of file page.h.

#define pmd_val

(

x

)

((x).ste[0])

Definition at line 31 of file page.h.

#define PTE_MASK   PAGE_MASK

Definition at line 41 of file page.h.

#define pte_val

(

x

)

((x).pte)

Definition at line 30 of file page.h.

#define pud_val

(

x

)

((x).pue[0])

Definition at line 32 of file page.h.

#define virt_addr_valid

(

kaddr

)

pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 63 of file page.h.

#define virt_to_page

(

kaddr

)

pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 62 of file page.h.

#define VM_DATA_DEFAULT_FLAGS

Value:

(VM_READ | VM_WRITE | \
    ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
         VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)

Definition at line 66 of file page.h.

Typedef Documentation

typedef struct page* pgtable_t

Definition at line 28 of file page.h.

Variable Documentation

unsigned long max_low_pfn

Definition at line 33 of file bootmem.c.

unsigned long max_pfn

Definition at line 35 of file bootmem.c.

unsigned long min_low_pfn

Definition at line 34 of file bootmem.c.