1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 249148020SSam Ravnborg #ifndef __VIRT_CONVERT__ 349148020SSam Ravnborg #define __VIRT_CONVERT__ 449148020SSam Ravnborg 549148020SSam Ravnborg /* 649148020SSam Ravnborg * Macros used for converting between virtual and physical mappings. 749148020SSam Ravnborg */ 849148020SSam Ravnborg 949148020SSam Ravnborg #ifdef __KERNEL__ 1049148020SSam Ravnborg 1149148020SSam Ravnborg #include <linux/compiler.h> 1249148020SSam Ravnborg #include <linux/mmzone.h> 1349148020SSam Ravnborg #include <asm/setup.h> 1449148020SSam Ravnborg #include <asm/page.h> 1549148020SSam Ravnborg 1649148020SSam Ravnborg /* 1749148020SSam Ravnborg * Change virtual addresses to physical addresses and vv. 1849148020SSam Ravnborg */ 19f8f33048SGreg Ungerer #define virt_to_phys virt_to_phys virt_to_phys(void * address)2049148020SSam Ravnborgstatic inline unsigned long virt_to_phys(void *address) 2149148020SSam Ravnborg { 2249148020SSam Ravnborg return __pa(address); 2349148020SSam Ravnborg } 2449148020SSam Ravnborg 25f8f33048SGreg Ungerer #define phys_to_virt phys_to_virt phys_to_virt(unsigned long address)2649148020SSam Ravnborgstatic inline void *phys_to_virt(unsigned long address) 2749148020SSam Ravnborg { 2849148020SSam Ravnborg return __va(address); 2949148020SSam Ravnborg } 3049148020SSam Ravnborg 3149148020SSam Ravnborg /* Permanent address of a page. */ 32f54bcdc2SGeert Uytterhoeven #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) 3349148020SSam Ravnborg 3449148020SSam Ravnborg /* 3549148020SSam Ravnborg * IO bus memory addresses are 1:1 with the physical address, 36*4313a249SArnd Bergmann * deprecated globally but still used on two machines. 3749148020SSam Ravnborg */ 38*4313a249SArnd Bergmann #if defined(CONFIG_AMIGA) || defined(CONFIG_VME) 3949148020SSam Ravnborg #define virt_to_bus virt_to_phys 40*4313a249SArnd Bergmann #endif 4149148020SSam Ravnborg 4249148020SSam Ravnborg #endif 4349148020SSam Ravnborg #endif 44