1 #ifndef _M68KNOMMU_PAGE_H 2 #define _M68KNOMMU_PAGE_H 3 4 #include <linux/const.h> 5 6 /* PAGE_SHIFT determines the page size */ 7 8 #define PAGE_SHIFT (12) 9 #define PAGE_SIZE (_AC(1,UL) << 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(movableflags, vma, vaddr) \ 26 alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) 27 #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE 28 29 /* 30 * These are used to make use of C type-checking.. 31 */ 32 typedef struct { unsigned long pte; } pte_t; 33 typedef struct { unsigned long pmd[16]; } pmd_t; 34 typedef struct { unsigned long pgd; } pgd_t; 35 typedef struct { unsigned long pgprot; } pgprot_t; 36 typedef struct page *pgtable_t; 37 38 #define pte_val(x) ((x).pte) 39 #define pmd_val(x) ((&x)->pmd[0]) 40 #define pgd_val(x) ((x).pgd) 41 #define pgprot_val(x) ((x).pgprot) 42 43 #define __pte(x) ((pte_t) { (x) } ) 44 #define __pmd(x) ((pmd_t) { (x) } ) 45 #define __pgd(x) ((pgd_t) { (x) } ) 46 #define __pgprot(x) ((pgprot_t) { (x) } ) 47 48 extern unsigned long memory_start; 49 extern unsigned long memory_end; 50 51 #endif /* !__ASSEMBLY__ */ 52 53 #include <asm/page_offset.h> 54 55 #define PAGE_OFFSET (PAGE_OFFSET_RAW) 56 57 #ifndef __ASSEMBLY__ 58 59 #define __pa(vaddr) virt_to_phys((void *)(vaddr)) 60 #define __va(paddr) phys_to_virt((unsigned long)(paddr)) 61 62 #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) 63 #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) 64 65 #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) 66 #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) 67 68 #define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) 69 #define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) 70 #define pfn_valid(pfn) ((pfn) < max_mapnr) 71 72 #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ 73 ((void *)(kaddr) < (void *)memory_end)) 74 75 #endif /* __ASSEMBLY__ */ 76 77 #include <asm-generic/getorder.h> 78 79 #endif /* _M68KNOMMU_PAGE_H */ 80