1#ifndef _M68K_PAGE_NO_H
2#define _M68K_PAGE_NO_H
3
4#ifndef __ASSEMBLY__
5
6extern unsigned long memory_start;
7extern unsigned long memory_end;
8
9#define clear_page(page) memset((page), 0, PAGE_SIZE)
10#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
11
12#define clear_user_page(page, vaddr, pg) clear_page(page)
13#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
14
15#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
16 alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
17#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
18
19#define __pa(vaddr) ((unsigned long)(vaddr))
20#define __va(paddr) ((void *)(paddr))
21
22#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
23#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
24
25#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
26#define page_to_virt(page) __va(((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET))
27
28#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
29#define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
30#define pfn_valid(pfn) ((pfn) < max_mapnr)
31
32#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
33 ((void *)(kaddr) < (void *)memory_end))
34
35#endif
36
37#endif
38
