1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _LINUX_IOREMAP_H 3#define _LINUX_IOREMAP_H 4 5#include <linux/kasan.h> 6#include <asm/pgtable.h> 7 8#if defined(CONFIG_HAS_IOMEM) || defined(CONFIG_GENERIC_IOREMAP) 9/* 10 * Ioremap often, but not always uses the generic vmalloc area. E.g on 11 * Power ARCH, it could have different ioremap space. 12 */ 13#ifndef IOREMAP_START 14#define IOREMAP_START VMALLOC_START 15#define IOREMAP_END VMALLOC_END 16#endif 17static inline bool is_ioremap_addr(const void *x) 18{ 19 unsigned long addr = (unsigned long)kasan_reset_tag(x); 20 21 return addr >= IOREMAP_START && addr < IOREMAP_END; 22} 23#else 24static inline bool is_ioremap_addr(const void *x) 25{ 26 return false; 27} 28#endif 29 30#endif /* _LINUX_IOREMAP_H */ 31