Cregit: Linux 6.1: virtconvert.h

Contributors: 6
Author	Tokens	Token Proportion	Commits	Commit Proportion
Linus Torvalds (pre-git)	57	58.16%	2	20.00%
Arnd Bergmann	14	14.29%	1	10.00%
Geert Uytterhoeven	13	13.27%	4	40.00%
Greg Ungerer	8	8.16%	1	10.00%
Roman Zippel	5	5.10%	1	10.00%
Greg Kroah-Hartman	1	1.02%	1	10.00%
Total	98		10

/* SPDX-License-Identifier: GPL-2.0 */
#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.
 */
#define virt_to_phys virt_to_phys
static inline unsigned long virt_to_phys(void *address)
{
	return __pa(address);
}

#define phys_to_virt phys_to_virt
static inline void *phys_to_virt(unsigned long address)
{
	return __va(address);
}

/* Permanent address of a page. */
#define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)

/*
 * IO bus memory addresses are 1:1 with the physical address,
 * deprecated globally but still used on two machines.
 */
#if defined(CONFIG_AMIGA) || defined(CONFIG_VME)
#define virt_to_bus virt_to_phys
#endif

#endif
#endif