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 get_user_page(vaddr) __get_free_page(GFP_KERNEL)
10#define free_user_page(page, addr) free_page(addr)
11
12#define clear_page(page) memset((page), 0, PAGE_SIZE)
13#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
14
15#define clear_user_page(page, vaddr, pg) clear_page(page)
16#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
17
18#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
19 alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
20#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
21
22#define __pa(vaddr) ((unsigned long)(vaddr))
23#define __va(paddr) ((void *)(paddr))
24
25#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
26#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
27
28#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
29#define page_to_virt(page) __va(((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET))
30
31#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
32#define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
33#define pfn_valid(pfn) ((pfn) < max_mapnr)
34
35#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
36 ((void *)(kaddr) < (void *)memory_end))
37
38#endif
39
40#endif
41
