page.h File Reference

#include <linux/const.h>
#include <asm/addrspace.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	PTE_MASK   PAGE_MASK
#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	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   (0x80000000UL)
#define	__pa(x)   PHYSADDR(x)
#define	__va(x)   ((void *)(P1SEGADDR(x)))
#define	MAP_NR(addr)   (((unsigned long)(addr) - PAGE_OFFSET) >> PAGE_SHIFT)
#define	phys_to_page(phys)   (pfn_to_page(phys >> PAGE_SHIFT))
#define	page_to_phys(page)   (page_to_pfn(page) << PAGE_SHIFT)
#define	PHYS_PFN_OFFSET   (CONFIG_PHYS_OFFSET >> PAGE_SHIFT)
#define	pfn_to_page(pfn)   (mem_map + ((pfn) - PHYS_PFN_OFFSET))
#define	page_to_pfn(page)   ((unsigned long)((page) - mem_map) + PHYS_PFN_OFFSET)
#define	pfn_valid(pfn)   ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + 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	HIGHMEM_START   0x20000000UL

Typedefs
typedef struct page *	pgtable_t

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

Variables
unsigned long	memory_start
unsigned long	memory_end

Macro Definition Documentation

#define __pa

(

x

)

PHYSADDR(x)

Definition at line 76 of file page.h.

#define __pgd

(

x

)

((pgd_t) { (x) })

Definition at line 42 of file page.h.

#define __pgprot

(

x

)

((pgprot_t) { (x) })

Definition at line 43 of file page.h.

#define __pte

(

x

)

((pte_t) { (x) })

Definition at line 41 of file page.h.

#define __va

(

x

)

((void *)(P1SEGADDR(x)))

Definition at line 77 of file page.h.

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

Definition at line 26 of file page.h.

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

Definition at line 27 of file page.h.

#define HIGHMEM_START   0x20000000UL

Definition at line 102 of file page.h.

#define MAP_NR

(

addr

)

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

Definition at line 79 of file page.h.

#define PAGE_MASK   (~(PAGE_SIZE-1))

Definition at line 16 of file page.h.

#define PAGE_OFFSET   (0x80000000UL)

Definition at line 66 of file page.h.

#define PAGE_SHIFT   12

Definition at line 14 of file page.h.

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

Definition at line 15 of file page.h.

#define page_to_pfn

(

page

)

((unsigned long)((page) - mem_map) + PHYS_PFN_OFFSET)

Definition at line 89 of file page.h.

#define page_to_phys

(

page

)

(page_to_pfn(page) << PAGE_SHIFT)

Definition at line 82 of file page.h.

#define pfn_to_page

(

pfn

)

(mem_map + ((pfn) - PHYS_PFN_OFFSET))

Definition at line 88 of file page.h.

#define pfn_valid

(

pfn

)

((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))

Definition at line 90 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 PHYS_PFN_OFFSET   (CONFIG_PHYS_OFFSET >> PAGE_SHIFT)

Definition at line 86 of file page.h.

#define phys_to_page

(

phys

)

(pfn_to_page(phys >> PAGE_SHIFT))

Definition at line 81 of file page.h.

#define PTE_MASK   PAGE_MASK

Definition at line 17 of file page.h.

#define pte_val

(

x

)

((x).pte)

Definition at line 37 of file page.h.

#define virt_addr_valid

(

kaddr

)

pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 94 of file page.h.

#define virt_to_page

(

kaddr

)

pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 93 of file page.h.

#define VM_DATA_DEFAULT_FLAGS

Value:

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

Definition at line 96 of file page.h.

Typedef Documentation

typedef struct page* pgtable_t

Definition at line 35 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.

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.