1 #ifndef __VIRT_CONVERT__
2 #define __VIRT_CONVERT__
5 * Macros used for converting between virtual and physical mappings.
10 #include <linux/compiler.h>
11 #include <linux/mmzone.h>
12 #include <asm/setup.h>
16 * Change virtual addresses to physical addresses and vv.
18 static inline unsigned long virt_to_phys(void *address)
23 static inline void *phys_to_virt(unsigned long address)
28 /* Permanent address of a page. */
29 #if defined(CONFIG_MMU) && defined(CONFIG_SINGLE_MEMORY_CHUNK)
30 #define page_to_phys(page) \
31 __pa(PAGE_OFFSET + (((page) - pg_data_map[0].node_mem_map) << PAGE_SHIFT))
33 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
37 * IO bus memory addresses are 1:1 with the physical address,
39 #define virt_to_bus virt_to_phys
40 #define bus_to_virt phys_to_virt