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 vma_alloc_zeroed_movable_folio(vma, vaddr) \
17	vma_alloc_folio(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, 0, vma, vaddr, false)
 
18
19#define __pa(vaddr)		((unsigned long)(vaddr))
20#define __va(paddr)		((void *)((unsigned long)(paddr)))
21
22static inline unsigned long virt_to_pfn(const void *kaddr)
23{
24	return __pa(kaddr) >> PAGE_SHIFT;
25}
26
27static inline void *pfn_to_virt(unsigned long pfn)
28{
29	return __va(pfn << PAGE_SHIFT);
30}
31
32#define virt_to_page(addr)	(mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
33#define page_to_virt(page)	__va(((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET))
34
 
 
 
 
35#define	virt_addr_valid(kaddr)	(((unsigned long)(kaddr) >= PAGE_OFFSET) && \
36				((unsigned long)(kaddr) < memory_end))
37
38#define ARCH_PFN_OFFSET PHYS_PFN(PAGE_OFFSET_RAW)
39
40#endif /* __ASSEMBLY__ */
41
42#endif /* _M68K_PAGE_NO_H */

 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_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 /* __ASSEMBLY__ */
37
38#endif /* _M68K_PAGE_NO_H */