1/* SPDX-License-Identifier: GPL-2.0 */
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(movableflags, vma, vaddr) \
17	alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
18#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
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)	(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
34				((void *)(kaddr) < (void *)memory_end))
35
36#endif /* __ASSEMBLY__ */
37
38#endif /* _M68K_PAGE_NO_H */
39