pfn.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _LINUX_PFN_H_
 3#define _LINUX_PFN_H_
 4
 5#ifndef __ASSEMBLY__
 6#include <linux/types.h>
 7#endif
 8
 9#define PFN_ALIGN(x)	(((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
10#define PFN_UP(x)	(((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
11#define PFN_DOWN(x)	((x) >> PAGE_SHIFT)
12#define PFN_PHYS(x)	((phys_addr_t)(x) << PAGE_SHIFT)
13#define PHYS_PFN(x)	((unsigned long)((x) >> PAGE_SHIFT))
14
15#endif