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