1
2#ifndef _M68K_PAGE_NO_H
3#define _M68K_PAGE_NO_H
4
5#ifndef __ASSEMBLY__
6
7extern unsigned long memory_start;
8extern unsigned long memory_end;
9
10#define clear_page(page) memset((page), 0, PAGE_SIZE)
11#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
12
13#define clear_user_page(page, vaddr, pg) clear_page(page)
14#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
15
16#define alloc_zeroed_user_highpage_movable(vma, vaddr) \
17 alloc_page_vma(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, vma, vaddr)
18#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE_MOVABLE
19
20#define __pa(vaddr) ((unsigned long)(vaddr))
21#define __va(paddr) ((void *)((unsigned long)(paddr)))
22
23#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
24#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
25
26#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
27#define page_to_virt(page) __va(((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET))
28
29#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
30#define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
31#define pfn_valid(pfn) ((pfn) < max_mapnr)
32
33#define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET) && \
34 ((unsigned long)(kaddr) < memory_end))
35
36#endif
37
38#endif
39