/* 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. */ #if defined([31mCONFIG_MMU[0m) && defined([31mCONFIG_SINGLE_MEMORY_CHUNK[0m) #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 |