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#ifndef __VIRT_CONVERT__
#define __VIRT_CONVERT__
/*
* Macros used for converting between virtual and physical mappings.
*/
#ifdef __KERNEL__
#include <linux/compiler.h>
#include <linux/mmzone.h>
#include <asm/setup.h>
#include <asm/page.h>
/*
* Change virtual addresses to physical addresses and vv.
*/
static inline unsigned long virt_to_phys(void *address)
{
return __pa(address);
}
static inline void *phys_to_virt(unsigned long address)
{
return __va(address);
}
/* Permanent address of a page. */
#if defined(CONFIG_MMU) && defined(CONFIG_SINGLE_MEMORY_CHUNK)
#define page_to_phys(page) \
__pa(PAGE_OFFSET + (((page) - pg_data_map[0].node_mem_map) << PAGE_SHIFT))
#else
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
#endif
/*
* IO bus memory addresses are 1:1 with the physical address,
*/
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt
#endif
#endif