page.h File Reference

#include <linux/types.h>
#include <asm/asm-compat.h>
#include <asm/kdump.h>
#include <asm/page_32.h>
#include <asm-generic/memory_model.h>

Go to the source code of this file.

Data Structures
struct	hugepd_t

Macros
#define	PAGE_SHIFT   12
#define	PAGE_SIZE   (ASM_CONST(1) << PAGE_SHIFT)
#define	HPAGE_SHIFT   PAGE_SHIFT
#define	HPAGE_SIZE   ((1UL) << HPAGE_SHIFT)
#define	HPAGE_MASK   (~(HPAGE_SIZE - 1))
#define	HUGETLB_PAGE_ORDER   (HPAGE_SHIFT - PAGE_SHIFT)
#define	HUGE_MAX_HSTATE   (MMU_PAGE_COUNT-1)
#define	__HAVE_ARCH_GATE_AREA   1
#define	PAGE_MASK   (~((1 << PAGE_SHIFT) - 1))
#define	KERNELBASE   ASM_CONST(CONFIG_KERNEL_START)
#define	PAGE_OFFSET   ASM_CONST(CONFIG_PAGE_OFFSET)
#define	LOAD_OFFSET   ASM_CONST((CONFIG_KERNEL_START-CONFIG_PHYSICAL_START))
#define	PHYSICAL_START   ASM_CONST(CONFIG_PHYSICAL_START)
#define	VIRT_PHYS_OFFSET   (KERNELBASE - PHYSICAL_START)
#define	MEMORY_START   (PHYSICAL_START + PAGE_OFFSET - KERNELBASE)
#define	virt_to_page(kaddr)   pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define	pfn_to_kaddr(pfn)   __va((pfn) << PAGE_SHIFT)
#define	virt_addr_valid(kaddr)   pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define	__va(x)   ((void *)(unsigned long)((phys_addr_t)(x) + PAGE_OFFSET - MEMORY_START))
#define	__pa(x)   ((unsigned long)(x) - PAGE_OFFSET + MEMORY_START)
#define	VM_DATA_DEFAULT_FLAGS32
#define	VM_DATA_DEFAULT_FLAGS64
#define	_ALIGN_UP(addr, size)   (((addr)+((size)-1))&(~((size)-1)))
#define	_ALIGN_DOWN(addr, size)   ((addr)&(~((size)-1)))
#define	_ALIGN(addr, size)   _ALIGN_UP(addr,size)
#define	is_kernel_addr(x)   ((x) >= PAGE_OFFSET)
#define	PD_HUGE   0x80000000
#define	HUGEPD_SHIFT_MASK   0x3f
#define	pte_val(x)   (x)
#define	__pte(x)   (x)
#define	pgd_val(x)   (x)
#define	pgprot_val(x)   (x)
#define	__pgd(x)   (x)
#define	__pgprot(x)   (x)
#define	is_hugepd(pdep)   0

Typedefs
typedef pte_basic_t	pte_t
typedef pte_t	real_pte_t
typedef unsigned long	pgd_t
typedef unsigned long	pgprot_t
typedef struct page *	pgtable_t

Functions
void	clear_user_page (void *page, unsigned long vaddr, struct page *pg)
void	copy_user_page (void *to, void *from, unsigned long vaddr, struct page *p)
int	page_is_ram (unsigned long pfn)
int	devmem_is_allowed (unsigned long pfn)

Macro Definition Documentation

#define __HAVE_ARCH_GATE_AREA   1

Definition at line 52 of file page.h.

#define __pa

(

x

)

((unsigned long)(x) - PAGE_OFFSET + MEMORY_START)

Definition at line 215 of file page.h.

#define __pgd

(

x

)

(x)

Definition at line 349 of file page.h.

#define __pgprot

(

x

)

(x)

Definition at line 350 of file page.h.

#define __pte

(

x

)

(x)

Definition at line 323 of file page.h.

#define __va

(

x

)

((void *)(unsigned long)((phys_addr_t)(x) + PAGE_OFFSET - MEMORY_START))

Definition at line 214 of file page.h.

#define _ALIGN	(		addr,
			size
	)		_ALIGN_UP(addr,size)

Definition at line 240 of file page.h.

#define _ALIGN_DOWN	(		addr,
			size
	)		((addr)&(~((size)-1)))

Definition at line 237 of file page.h.

#define _ALIGN_UP	(		addr,
			size
	)		(((addr)+((size)-1))&(~((size)-1)))

Definition at line 236 of file page.h.

#define HPAGE_MASK   (~(HPAGE_SIZE - 1))

Definition at line 46 of file page.h.

#define HPAGE_SHIFT   PAGE_SHIFT

Definition at line 43 of file page.h.

#define HPAGE_SIZE   ((1UL) << HPAGE_SHIFT)

Definition at line 45 of file page.h.

#define HUGE_MAX_HSTATE   (MMU_PAGE_COUNT-1)

Definition at line 48 of file page.h.

#define HUGEPD_SHIFT_MASK   0x3f

Definition at line 268 of file page.h.

#define HUGETLB_PAGE_ORDER   (HPAGE_SHIFT - PAGE_SHIFT)

Definition at line 47 of file page.h.

#define is_hugepd

(

pdep

)

0

Definition at line 364 of file page.h.

#define is_kernel_addr

(

x

)

((x) >= PAGE_OFFSET)

Definition at line 249 of file page.h.

#define KERNELBASE   ASM_CONST(CONFIG_KERNEL_START)

Definition at line 91 of file page.h.

#define LOAD_OFFSET   ASM_CONST((CONFIG_KERNEL_START-CONFIG_PHYSICAL_START))

Definition at line 93 of file page.h.

#define MEMORY_START   (PHYSICAL_START + PAGE_OFFSET - KERNELBASE)

Definition at line 125 of file page.h.

#define PAGE_MASK   (~((1 << PAGE_SHIFT) - 1))

Definition at line 59 of file page.h.

#define PAGE_OFFSET   ASM_CONST(CONFIG_PAGE_OFFSET)

Definition at line 92 of file page.h.

#define PAGE_SHIFT   12

Definition at line 34 of file page.h.

#define PAGE_SIZE   (ASM_CONST(1) << PAGE_SHIFT)

Definition at line 37 of file page.h.

#define PD_HUGE   0x80000000

Definition at line 261 of file page.h.

#define pfn_to_kaddr

(

pfn

)

__va((pfn) << PAGE_SHIFT)

Definition at line 134 of file page.h.

#define pgd_val

(

x

)

(x)

Definition at line 345 of file page.h.

#define pgprot_val

(

x

)

(x)

Definition at line 346 of file page.h.

#define PHYSICAL_START   ASM_CONST(CONFIG_PHYSICAL_START)

Definition at line 109 of file page.h.

#define pte_val

(

x

)

(x)

Definition at line 322 of file page.h.

#define virt_addr_valid

(

kaddr

)

pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 135 of file page.h.

#define VIRT_PHYS_OFFSET   (KERNELBASE - PHYSICAL_START)

Definition at line 116 of file page.h.

#define virt_to_page

(

kaddr

)

pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 133 of file page.h.

#define VM_DATA_DEFAULT_FLAGS32

Value:

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

Definition at line 223 of file page.h.

#define VM_DATA_DEFAULT_FLAGS64

Value:

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

Definition at line 226 of file page.h.

Typedef Documentation

typedef unsigned long pgd_t

Definition at line 344 of file page.h.

typedef unsigned long pgprot_t

Definition at line 348 of file page.h.

typedef struct page* pgtable_t

Definition at line 381 of file page.h.

typedef pte_basic_t pte_t

Definition at line 321 of file page.h.

typedef pte_t real_pte_t

Definition at line 328 of file page.h.

Function Documentation

void clear_user_page	(	void *	page,
		unsigned long	vaddr,
		struct page *	pg
	)

Definition at line 379 of file cache.c.

void copy_user_page	(	void *	to,
		void *	from,
		unsigned long	vaddr,
		struct page *	p
	)

Definition at line 402 of file cache.c.

int devmem_is_allowed

(

unsigned long

pfn

)

Definition at line 663 of file init.c.

int page_is_ram

(

unsigned long

pfn

)

Definition at line 464 of file setup.c.