1#ifndef _ASMARM_PAGE_H 2#define _ASMARM_PAGE_H 3 4#include <asm/proc/page.h> 5 6#define PAGE_SIZE (1UL << PAGE_SHIFT) 7#define PAGE_MASK (~(PAGE_SIZE-1)) 8 9#ifdef __KERNEL__ 10#ifndef __ASSEMBLY__ 11 12#define STRICT_MM_TYPECHECKS 13 14#define clear_page(page) memzero((void *)(page), PAGE_SIZE) 15extern void copy_page(void *to, void *from); 16 17#define clear_user_page(page, vaddr) clear_page(page) 18#define copy_user_page(to, from, vaddr) copy_page(to, from) 19 20#ifdef STRICT_MM_TYPECHECKS 21/* 22 * These are used to make use of C type-checking.. 23 */ 24typedef struct { unsigned long pte; } pte_t; 25typedef struct { unsigned long pmd; } pmd_t; 26typedef struct { unsigned long pgd; } pgd_t; 27typedef struct { unsigned long pgprot; } pgprot_t; 28 29#define pte_val(x) ((x).pte) 30#define pmd_val(x) ((x).pmd) 31#define pgd_val(x) ((x).pgd) 32#define pgprot_val(x) ((x).pgprot) 33 34#define __pte(x) ((pte_t) { (x) } ) 35#define __pmd(x) ((pmd_t) { (x) } ) 36#define __pgd(x) ((pgd_t) { (x) } ) 37#define __pgprot(x) ((pgprot_t) { (x) } ) 38 39#else 40/* 41 * .. while these make it easier on the compiler 42 */ 43typedef unsigned long pte_t; 44typedef unsigned long pmd_t; 45typedef unsigned long pgd_t; 46typedef unsigned long pgprot_t; 47 48#define pte_val(x) (x) 49#define pmd_val(x) (x) 50#define pgd_val(x) (x) 51#define pgprot_val(x) (x) 52 53#define __pte(x) (x) 54#define __pmd(x) (x) 55#define __pgd(x) (x) 56#define __pgprot(x) (x) 57 58#endif 59#endif /* !__ASSEMBLY__ */ 60 61/* to align the pointer to the (next) page boundary */ 62#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) 63 64#ifndef __ASSEMBLY__ 65 66#ifdef CONFIG_DEBUG_BUGVERBOSE 67extern void __bug(const char *file, int line, void *data); 68 69/* give file/line information */ 70#define BUG() __bug(__FILE__, __LINE__, NULL) 71#define PAGE_BUG(page) __bug(__FILE__, __LINE__, page) 72 73#else 74 75/* these just cause an oops */ 76#define BUG() (*(int *)0 = 0) 77#define PAGE_BUG(page) (*(int *)0 = 0) 78 79#endif 80 81/* Pure 2^n version of get_order */ 82static inline int get_order(unsigned long size) 83{ 84 int order; 85 86 size = (size-1) >> (PAGE_SHIFT-1); 87 order = -1; 88 do { 89 size >>= 1; 90 order++; 91 } while (size); 92 return order; 93} 94 95#endif /* !__ASSEMBLY__ */ 96 97#include <linux/config.h> 98#include <asm/arch/memory.h> 99 100#define __pa(x) __virt_to_phys((unsigned long)(x)) 101#define __va(x) ((void *)__phys_to_virt((unsigned long)(x))) 102 103#ifndef CONFIG_DISCONTIGMEM 104#define virt_to_page(kaddr) (mem_map + (__pa(kaddr) >> PAGE_SHIFT) - \ 105 (PHYS_OFFSET >> PAGE_SHIFT)) 106#define VALID_PAGE(page) ((page - mem_map) < max_mapnr) 107#endif 108 109#endif 110 111#endif 112