page.h File Reference

#include <asm/processor.h>
#include <asm/types.h>
#include <asm/cache.h>
#include <platform/hardware.h>
#include <asm-generic/getorder.h>
#include <asm-generic/memory_model.h>

Go to the source code of this file.

Data Structures
struct	pte_t
struct	pgd_t
struct	pgprot_t

Macros
#define	XCHAL_KSEG_CACHED_VADDR   0xd0000000
#define	XCHAL_KSEG_BYPASS_VADDR   0xd8000000
#define	XCHAL_KSEG_PADDR   0x00000000
#define	XCHAL_KSEG_SIZE   0x08000000
#define	PAGE_SHIFT   12
#define	PAGE_SIZE   (__XTENSA_UL_CONST(1) << PAGE_SHIFT)
#define	PAGE_MASK   (~(PAGE_SIZE-1))
#define	PAGE_OFFSET   0
#define	MAX_MEM_PFN   (PLATFORM_DEFAULT_MEM_START + PLATFORM_DEFAULT_MEM_SIZE)
#define	PGTABLE_START   0x80000000
#define	DCACHE_ALIAS_ORDER   0
#define	ICACHE_ALIAS_ORDER   0
#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	clear_user_page(page, vaddr, pg)   clear_page(page)
#define	copy_user_page(to, from, vaddr, pg)   copy_page(to, from)
#define	ARCH_PFN_OFFSET   (PLATFORM_DEFAULT_MEM_START >> PAGE_SHIFT)
#define	__pa(x)   ((unsigned long) (x) - PAGE_OFFSET)
#define	__va(x)   ((void *)((unsigned long) (x) + PAGE_OFFSET))
#define	pfn_valid(pfn)   ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
#define	virt_to_page(kaddr)   pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define	page_to_virt(page)   __va(page_to_pfn(page) << PAGE_SHIFT)
#define	virt_addr_valid(kaddr)   pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define	page_to_phys(page)   (page_to_pfn(page) << PAGE_SHIFT)
#define	VM_DATA_DEFAULT_FLAGS

Typedefs
typedef struct page *	pgtable_t

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

Macro Definition Documentation

#define __pa

(

x

)

((unsigned long) (x) - PAGE_OFFSET)

Definition at line 162 of file page.h.

#define __pgd

(

x

)

((pgd_t) { (x) } )

Definition at line 113 of file page.h.

#define __pgprot

(

x

)

((pgprot_t) { (x) } )

Definition at line 114 of file page.h.

#define __pte

(

x

)

((pte_t) { (x) } )

Definition at line 112 of file page.h.

#define __va

(

x

)

((void *)((unsigned long) (x) + PAGE_OFFSET))

Definition at line 163 of file page.h.

#define ARCH_PFN_OFFSET   (PLATFORM_DEFAULT_MEM_START >> PAGE_SHIFT)

Definition at line 160 of file page.h.

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

Definition at line 149 of file page.h.

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

Definition at line 150 of file page.h.

#define DCACHE_ALIAS_ORDER   0

Definition at line 80 of file page.h.

#define ICACHE_ALIAS_ORDER   0

Definition at line 89 of file page.h.

#define MAX_MEM_PFN   (PLATFORM_DEFAULT_MEM_START + PLATFORM_DEFAULT_MEM_SIZE)

Definition at line 41 of file page.h.

#define PAGE_MASK   (~(PAGE_SIZE-1))

Definition at line 34 of file page.h.

#define PAGE_OFFSET   0

Definition at line 40 of file page.h.

#define PAGE_SHIFT   12

Definition at line 32 of file page.h.

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

Definition at line 33 of file page.h.

#define page_to_phys

(

page

)

(page_to_pfn(page) << PAGE_SHIFT)

Definition at line 172 of file page.h.

#define page_to_virt

(

page

)

__va(page_to_pfn(page) << PAGE_SHIFT)

Definition at line 170 of file page.h.

#define pfn_valid

(

pfn

)

((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)

Definition at line 164 of file page.h.

#define pgd_val

(

x

)

((x).pgd)

Definition at line 109 of file page.h.

#define pgprot_val

(

x

)

((x).pgprot)

Definition at line 110 of file page.h.

#define PGTABLE_START   0x80000000

Definition at line 44 of file page.h.

#define pte_val

(

x

)

((x).pte)

Definition at line 108 of file page.h.

#define virt_addr_valid

(

kaddr

)

pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 171 of file page.h.

#define virt_to_page

(

kaddr

)

pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 169 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 176 of file page.h.

#define XCHAL_KSEG_BYPASS_VADDR   0xd8000000

Definition at line 24 of file page.h.

#define XCHAL_KSEG_CACHED_VADDR   0xd0000000

Definition at line 23 of file page.h.

#define XCHAL_KSEG_PADDR   0x00000000

Definition at line 25 of file page.h.

#define XCHAL_KSEG_SIZE   0x08000000

Definition at line 26 of file page.h.

Typedef Documentation

typedef struct page* pgtable_t

Definition at line 106 of file page.h.

Function Documentation

void clear_page

(

void *

page

)

void copy_page	(	void *	to,
		void *	from
	)

Definition at line 22 of file nommu.c.