diff options
Diffstat (limited to 'arch/m68k/include/asm/page_no.h')
-rw-r--r-- | arch/m68k/include/asm/page_no.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/page_no.h b/arch/m68k/include/asm/page_no.h new file mode 100644 index 0000000000..af3a109732 --- /dev/null +++ b/arch/m68k/include/asm/page_no.h @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _M68K_PAGE_NO_H +#define _M68K_PAGE_NO_H + +#ifndef __ASSEMBLY__ + +extern unsigned long memory_start; +extern unsigned long memory_end; + +#define clear_page(page) memset((page), 0, PAGE_SIZE) +#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) + +#define clear_user_page(page, vaddr, pg) clear_page(page) +#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) + +#define vma_alloc_zeroed_movable_folio(vma, vaddr) \ + vma_alloc_folio(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, 0, vma, vaddr, false) + +#define __pa(vaddr) ((unsigned long)(vaddr)) +#define __va(paddr) ((void *)((unsigned long)(paddr))) + +static inline unsigned long virt_to_pfn(const void *kaddr) +{ + return __pa(kaddr) >> PAGE_SHIFT; +} + +static inline void *pfn_to_virt(unsigned long pfn) +{ + return __va(pfn << PAGE_SHIFT); +} + +#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) +#define page_to_virt(page) __va(((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)) + +#define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET) && \ + ((unsigned long)(kaddr) < memory_end)) + +#define ARCH_PFN_OFFSET PHYS_PFN(PAGE_OFFSET_RAW) + +#endif /* __ASSEMBLY__ */ + +#endif /* _M68K_PAGE_NO_H */ |