page.h File Reference

#include <linux/const.h>
#include <linux/types.h>
#include <asm/vm-flags.h>
#include <mem.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	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_page(page)   memset((void *)(page), 0, PAGE_SIZE)
#define	copy_page(to, from)   memcpy((void *)(to), (void *)(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	pte_val(x)   ((x).pte)
#define	pte_get_bits(p, bits)   ((p).pte & (bits))
#define	pte_set_bits(p, bits)   ((p).pte |= (bits))
#define	pte_clear_bits(p, bits)   ((p).pte &= ~(bits))
#define	pte_copy(to, from)   ((to).pte = (from).pte)
#define	pte_is_zero(p)   (!((p).pte & ~_PAGE_NEWPAGE))
#define	pte_set_val(p, phys, prot)   (p).pte = (phys | pgprot_val(prot))
#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) } )
#define	PAGE_OFFSET   (uml_physmem)
#define	KERNELBASE   PAGE_OFFSET
#define	__va_space   (8*1024*1024)
#define	__pa(virt)   to_phys((void *) (unsigned long) (virt))
#define	__va(phys)   to_virt((unsigned long) (phys))
#define	phys_to_pfn(p)   ((pfn_t) ((p) >> PAGE_SHIFT))
#define	pfn_to_phys(pfn)   ((phys_t) ((pfn) << PAGE_SHIFT))
#define	pfn_valid(pfn)   ((pfn) < max_mapnr)
#define	virt_addr_valid(v)   pfn_valid(phys_to_pfn(__pa(v)))

Typedefs
typedef unsigned long	pfn_t
typedef unsigned long	phys_t
typedef struct page *	pgtable_t

Variables
unsigned long	uml_physmem

Macro Definition Documentation

#define __pa

(

virt

)

to_phys((void *) (unsigned long) (virt))

Definition at line 109 of file page.h.

#define __pgd

(

x

)

((pgd_t) { (x) } )

Definition at line 92 of file page.h.

#define __pgprot

(

x

)

((pgprot_t) { (x) } )

Definition at line 93 of file page.h.

#define __pte

(

x

)

((pte_t) { (x) } )

Definition at line 91 of file page.h.

#define __va

(

phys

)

to_virt((unsigned long) (phys))

Definition at line 110 of file page.h.

#define __va_space   (8*1024*1024)

Definition at line 100 of file page.h.

#define clear_page

(

page

)

memset((void *)(page), 0, PAGE_SIZE)

Definition at line 28 of file page.h.

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

Definition at line 31 of file page.h.

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

Definition at line 29 of file page.h.

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

Definition at line 32 of file page.h.

#define KERNELBASE   PAGE_OFFSET

Definition at line 98 of file page.h.

#define PAGE_MASK   (~(PAGE_SIZE-1))

Definition at line 15 of file page.h.

#define PAGE_OFFSET   (uml_physmem)

Definition at line 97 of file page.h.

#define PAGE_SHIFT   12

Definition at line 13 of file page.h.

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

Definition at line 14 of file page.h.

#define pfn_to_phys

(

pfn

)

((phys_t) ((pfn) << PAGE_SHIFT))

Definition at line 113 of file page.h.

#define pfn_valid

(

pfn

)

((pfn) < max_mapnr)

Definition at line 115 of file page.h.

#define pgd_val

(

x

)

((x).pgd)

Definition at line 88 of file page.h.

#define pgprot_val

(

x

)

((x).pgprot)

Definition at line 89 of file page.h.

#define phys_to_pfn

(

p

)

((pfn_t) ((p) >> PAGE_SHIFT))

Definition at line 112 of file page.h.

#define pte_clear_bits	(		p,
			bits
	)		((p).pte &= ~(bits))

Definition at line 74 of file page.h.

#define pte_copy	(		to,
			from
	)		((to).pte = (from).pte)

Definition at line 75 of file page.h.

#define pte_get_bits	(		p,
			bits
	)		((p).pte & (bits))

Definition at line 72 of file page.h.

#define pte_is_zero

(

p

)

(!((p).pte & ~_PAGE_NEWPAGE))

Definition at line 76 of file page.h.

#define pte_set_bits	(		p,
			bits
	)		((p).pte |= (bits))

Definition at line 73 of file page.h.

#define pte_set_val	(		p,
			phys,
			prot
	)		(p).pte = (phys | pgprot_val(prot))

Definition at line 77 of file page.h.

#define pte_val

(

x

)

((x).pte)

Definition at line 69 of file page.h.

#define virt_addr_valid

(

v

)

pfn_valid(phys_to_pfn(__pa(v)))

Definition at line 116 of file page.h.

Typedef Documentation

typedef unsigned long pfn_t

Definition at line 79 of file page.h.

typedef struct page* pgtable_t

Definition at line 86 of file page.h.

typedef unsigned long phys_t

Definition at line 80 of file page.h.

Variable Documentation

unsigned long uml_physmem

Definition at line 109 of file um_arch.c.