41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
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/* $OpenBSD: highmem.h,v 1.4 2021/07/28 13:28:05 kettenis Exp $ */
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/*
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* Copyright (c) 2013, 2014, 2015 Mark Kettenis
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _LINUX_HIGHMEM_H
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#define _LINUX_HIGHMEM_H
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#include <sys/param.h>
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#include <uvm/uvm_extern.h>
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#include <linux/uaccess.h>
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#include <asm/pgtable.h>
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void *kmap(struct vm_page *);
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void kunmap_va(void *addr);
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#define kmap_to_page(ptr) (ptr)
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void *kmap_atomic_prot(struct vm_page *, pgprot_t);
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void kunmap_atomic(void *);
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static inline void *
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kmap_atomic(struct vm_page *pg)
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{
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return kmap_atomic_prot(pg, PAGE_KERNEL);
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}
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#endif
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