xref: /openbmc/linux/arch/m68k/include/asm/page_no.h (revision 13525645)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _M68K_PAGE_NO_H
3 #define _M68K_PAGE_NO_H
4 
5 #ifndef __ASSEMBLY__
6 
7 extern unsigned long memory_start;
8 extern 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 
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	virt_addr_valid(kaddr)	(((unsigned long)(kaddr) >= PAGE_OFFSET) && \
29 				((unsigned long)(kaddr) < memory_end))
30 
31 #define ARCH_PFN_OFFSET PHYS_PFN(PAGE_OFFSET_RAW)
32 
33 #endif /* __ASSEMBLY__ */
34 
35 #endif /* _M68K_PAGE_NO_H */
36