32 lines
744 B
C
32 lines
744 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_IOREMAP_H
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#define _LINUX_IOREMAP_H
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#include <linux/kasan.h>
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#include <asm/pgtable.h>
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#include <asm/vmalloc.h>
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#if defined(CONFIG_HAS_IOMEM) || defined(CONFIG_GENERIC_IOREMAP)
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/*
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* Ioremap often, but not always uses the generic vmalloc area. E.g on
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* Power ARCH, it could have different ioremap space.
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*/
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#ifndef IOREMAP_START
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#define IOREMAP_START VMALLOC_START
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#define IOREMAP_END VMALLOC_END
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#endif
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static inline bool is_ioremap_addr(const void *x)
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{
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unsigned long addr = (unsigned long)kasan_reset_tag(x);
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return addr >= IOREMAP_START && addr < IOREMAP_END;
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}
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#else
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static inline bool is_ioremap_addr(const void *x)
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{
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return false;
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}
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#endif
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#endif /* _LINUX_IOREMAP_H */
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