162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef __VIRT_CONVERT__ 362306a36Sopenharmony_ci#define __VIRT_CONVERT__ 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci/* 662306a36Sopenharmony_ci * Macros used for converting between virtual and physical mappings. 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#ifdef __KERNEL__ 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#include <linux/compiler.h> 1262306a36Sopenharmony_ci#include <linux/mmzone.h> 1362306a36Sopenharmony_ci#include <asm/setup.h> 1462306a36Sopenharmony_ci#include <asm/page.h> 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci/* 1762306a36Sopenharmony_ci * Change virtual addresses to physical addresses and vv. 1862306a36Sopenharmony_ci */ 1962306a36Sopenharmony_ci#define virt_to_phys virt_to_phys 2062306a36Sopenharmony_cistatic inline unsigned long virt_to_phys(void *address) 2162306a36Sopenharmony_ci{ 2262306a36Sopenharmony_ci return __pa(address); 2362306a36Sopenharmony_ci} 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci#define phys_to_virt phys_to_virt 2662306a36Sopenharmony_cistatic inline void *phys_to_virt(unsigned long address) 2762306a36Sopenharmony_ci{ 2862306a36Sopenharmony_ci return __va(address); 2962306a36Sopenharmony_ci} 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci/* Permanent address of a page. */ 3262306a36Sopenharmony_ci#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_ci/* 3562306a36Sopenharmony_ci * IO bus memory addresses are 1:1 with the physical address, 3662306a36Sopenharmony_ci * deprecated globally but still used on two machines. 3762306a36Sopenharmony_ci */ 3862306a36Sopenharmony_ci#if defined(CONFIG_AMIGA) || defined(CONFIG_VME) 3962306a36Sopenharmony_ci#define virt_to_bus virt_to_phys 4062306a36Sopenharmony_ci#endif 4162306a36Sopenharmony_ci 4262306a36Sopenharmony_ci#endif 4362306a36Sopenharmony_ci#endif 44