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 */ 43