page.h File Reference

#include <linux/const.h>
#include <asm/uncached.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	pgprot_t
struct	pgd_t

Macros
#define	PAGE_SIZE   (_AC(1, UL) << PAGE_SHIFT)
#define	PAGE_MASK   (~(PAGE_SIZE-1))
#define	PTE_MASK   PAGE_MASK
#define	clear_page(page)   memset((void *)(page), 0, PAGE_SIZE)
#define	__HAVE_ARCH_COPY_USER_HIGHPAGE
#define	clear_user_highpage   clear_user_highpage
#define	pte_val(x)   ((x).pte_low)
#define	__pte(x)   ((pte_t) { (x) } )
#define	pgd_val(x)   ((x).pgd)
#define	pgprot_val(x)   ((x).pgprot)
#define	__pgd(x)   ((pgd_t) { (x) } )
#define	__pgprot(x)   ((pgprot_t) { (x) } )
#define	pte_pgprot(x)   __pgprot(pte_val(x) & PTE_FLAGS_MASK)
#define	__MEMORY_START   CONFIG_MEMORY_START
#define	__MEMORY_SIZE   CONFIG_MEMORY_SIZE
#define	PHYSICAL_OFFSET   0
#define	PAGE_OFFSET   CONFIG_PAGE_OFFSET
#define	___pa(x)   ((x)-PAGE_OFFSET)
#define	___va(x)   ((x)+PAGE_OFFSET)
#define	__pa(x)   ___pa((unsigned long)x)
#define	__va(x)   (void *)___va((unsigned long)x)
#define	UNCAC_ADDR(addr)   ((addr))
#define	CAC_ADDR(addr)   ((addr))
#define	pfn_to_kaddr(pfn)   __va((pfn) << PAGE_SHIFT)
#define	page_to_phys(page)   (page_to_pfn(page) << PAGE_SHIFT)
#define	PFN_START   (__MEMORY_START >> PAGE_SHIFT)
#define	ARCH_PFN_OFFSET   (PFN_START)
#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	ARCH_DMA_MINALIGN   L1_CACHE_BYTES

Typedefs
typedef struct page *	pgtable_t

Functions
void	copy_page (void *to, void *from)
void	copy_user_highpage (struct page *to, struct page *from, unsigned long vaddr, struct vm_area_struct *vma)
void	clear_user_highpage (struct page *page, unsigned long vaddr)

Variables
unsigned long	shm_align_mask
unsigned long	max_low_pfn
unsigned long	min_low_pfn
unsigned long	memory_start
unsigned long	memory_end
unsigned long	memory_limit

Macro Definition Documentation

#define ___pa

(

x

)

((x)-PAGE_OFFSET)

Definition at line 144 of file page.h.

#define ___va

(

x

)

((x)+PAGE_OFFSET)

Definition at line 145 of file page.h.

#define __HAVE_ARCH_COPY_USER_HIGHPAGE

Definition at line 68 of file page.h.

#define __MEMORY_SIZE   CONFIG_MEMORY_SIZE

Definition at line 113 of file page.h.

#define __MEMORY_START   CONFIG_MEMORY_START

Definition at line 112 of file page.h.

#define __pa

(

x

)

___pa((unsigned long)x)

Definition at line 149 of file page.h.

#define __pgd

(

x

)

((pgd_t) { (x) } )

Definition at line 100 of file page.h.

#define __pgprot

(

x

)

((pgprot_t) { (x) } )

Definition at line 101 of file page.h.

#define __pte

(

x

)

((pte_t) { (x) } )

Definition at line 94 of file page.h.

#define __va

(

x

)

(void *)___va((unsigned long)x)

Definition at line 150 of file page.h.

#define ARCH_DMA_MINALIGN   L1_CACHE_BYTES

Definition at line 198 of file page.h.

#define ARCH_PFN_OFFSET   (PFN_START)

Definition at line 176 of file page.h.

#define CAC_ADDR

(

addr

)

((addr))

Definition at line 163 of file page.h.

#define clear_page

(

page

)

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

Definition at line 60 of file page.h.

#define clear_user_highpage   clear_user_highpage

Definition at line 70 of file page.h.

#define PAGE_MASK   (~(PAGE_SIZE-1))

Definition at line 24 of file page.h.

#define PAGE_OFFSET   CONFIG_PAGE_OFFSET

Definition at line 129 of file page.h.

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

Definition at line 23 of file page.h.

#define page_to_phys

(

page

)

(page_to_pfn(page) << PAGE_SHIFT)

Definition at line 167 of file page.h.

#define PFN_START   (__MEMORY_START >> PAGE_SHIFT)

Definition at line 175 of file page.h.

#define pfn_to_kaddr

(

pfn

)

__va((pfn) << PAGE_SHIFT)

Definition at line 166 of file page.h.

#define pgd_val

(

x

)

((x).pgd)

Definition at line 97 of file page.h.

#define pgprot_val

(

x

)

((x).pgprot)

Definition at line 98 of file page.h.

#define PHYSICAL_OFFSET   0

Definition at line 122 of file page.h.

#define PTE_MASK   PAGE_MASK

Definition at line 25 of file page.h.

#define pte_pgprot

(

x

)

__pgprot(pte_val(x) & PTE_FLAGS_MASK)

Definition at line 105 of file page.h.

#define pte_val

(

x

)

((x).pte_low)

Definition at line 93 of file page.h.

#define UNCAC_ADDR

(

addr

)

((addr))

Definition at line 162 of file page.h.

#define virt_addr_valid

(

kaddr

)

pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 181 of file page.h.

#define virt_to_page

(

kaddr

)

pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 177 of file page.h.

#define VM_DATA_DEFAULT_FLAGS

Value:

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

Definition at line 183 of file page.h.

Typedef Documentation

typedef struct page* pgtable_t

Definition at line 103 of file page.h.

Function Documentation

void clear_user_highpage	(	struct page *	page,
		unsigned long	vaddr
	)

Definition at line 121 of file cache.c.

void copy_page	(	void *	to,
		void *	from
	)

Definition at line 22 of file nommu.c.

void copy_user_highpage	(	struct page *	to,
		struct page *	from,
		unsigned long	vaddr,
		struct vm_area_struct *	vma
	)

Definition at line 205 of file init.c.

Variable Documentation

unsigned long max_low_pfn

Definition at line 33 of file bootmem.c.

unsigned long memory_end

Definition at line 42 of file setup.c.

unsigned long memory_limit

Definition at line 65 of file mem.c.

unsigned long memory_start

Definition at line 42 of file setup.c.

unsigned long min_low_pfn

Definition at line 34 of file bootmem.c.

unsigned long shm_align_mask

Definition at line 18 of file mmap.c.