| #ifndef _ASM_GENERIC_PAGE_H_ |
| #define _ASM_GENERIC_PAGE_H_ |
| /* |
| * asm-generic/page.h |
| * adapted from the Linux kernel's include/asm-generic/page.h |
| * |
| * Copyright (C) 2014, Red Hat Inc, Andrew Jones <drjones@redhat.com> |
| * |
| * This work is licensed under the terms of the GNU LGPL, version 2. |
| */ |
| |
| #include <linux/const.h> |
| |
| #define PAGE_SHIFT 12 |
| #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) |
| #define PAGE_MASK (~(PAGE_SIZE-1)) |
| |
| #ifndef __ASSEMBLY__ |
| |
| #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) |
| |
| #define __va(x) ((void *)((unsigned long) (x))) |
| #define __pa(x) ((unsigned long) (x)) |
| #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) |
| #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) |
| |
| #endif /* !__ASSEMBLY__ */ |
| |
| #endif /* _ASM_GENERIC_PAGE_H_ */ |