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 __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) (((unsigned long)(kaddr) >= PAGE_OFFSET) && \ 34 ((unsigned long)(kaddr) < memory_end)) 35 36 #endif /* __ASSEMBLY__ */ 37 38 #endif /* _M68K_PAGE_NO_H */ 39