1#ifndef _M68KNOMMU_PAGE_H 2#define _M68KNOMMU_PAGE_H 3 4#ifdef __KERNEL__ 5 6/* PAGE_SHIFT determines the page size */ 7 8#define PAGE_SHIFT (12) 9#define PAGE_SIZE (1UL << PAGE_SHIFT) 10#define PAGE_MASK (~(PAGE_SIZE-1)) 11 12#include <asm/setup.h> 13 14#ifndef __ASSEMBLY__ 15 16#define get_user_page(vaddr) __get_free_page(GFP_KERNEL) 17#define free_user_page(page, addr) free_page(addr) 18 19#define clear_page(page) memset((page), 0, PAGE_SIZE) 20#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) 21 22#define clear_user_page(page, vaddr, pg) clear_page(page) 23#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) 24 25#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr) 26#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE 27 28/* 29 * These are used to make use of C type-checking.. 30 */ 31typedef struct { unsigned long pte; } pte_t; 32typedef struct { unsigned long pmd[16]; } pmd_t; 33typedef struct { unsigned long pgd; } pgd_t; 34typedef struct { unsigned long pgprot; } pgprot_t; 35 36#define pte_val(x) ((x).pte) 37#define pmd_val(x) ((&x)->pmd[0]) 38#define pgd_val(x) ((x).pgd) 39#define pgprot_val(x) ((x).pgprot) 40 41#define __pte(x) ((pte_t) { (x) } ) 42#define __pmd(x) ((pmd_t) { (x) } ) 43#define __pgd(x) ((pgd_t) { (x) } ) 44#define __pgprot(x) ((pgprot_t) { (x) } ) 45 46/* to align the pointer to the (next) page boundary */ 47#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) 48 49extern unsigned long memory_start; 50extern unsigned long memory_end; 51 52#endif /* !__ASSEMBLY__ */ 53 54#include <asm/page_offset.h> 55 56#define PAGE_OFFSET (PAGE_OFFSET_RAW) 57 58#ifndef __ASSEMBLY__ 59 60#define __pa(vaddr) virt_to_phys((void *)(vaddr)) 61#define __va(paddr) phys_to_virt((unsigned long)(paddr)) 62 63#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) 64#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) 65 66#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) 67#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) 68 69#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) 70#define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) 71#define pfn_valid(pfn) ((pfn) < max_mapnr) 72 73#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ 74 ((void *)(kaddr) < (void *)memory_end)) 75 76#endif /* __ASSEMBLY__ */ 77 78#include <asm-generic/page.h> 79 80#endif /* __KERNEL__ */ 81 82#endif /* _M68KNOMMU_PAGE_H */ 83