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 static inline unsigned long virt_to_pfn(const void *kaddr) 23 { 24 return __pa(kaddr) >> PAGE_SHIFT; 25 } 26 27 static 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