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      1 /*	$NetBSD: highmem.h,v 1.6 2021/12/19 10:51:24 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2013 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Taylor R. Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _LINUX_HIGHMEM_H_
     33 #define _LINUX_HIGHMEM_H_
     34 
     35 #include <sys/types.h>
     36 #include <sys/queue.h>
     37 
     38 #include <uvm/uvm_extern.h>
     39 
     40 #include <linux/kernel.h>
     41 #include <linux/mm.h>
     42 #include <linux/mm_types.h>
     43 
     44 /* XXX Make the nm output a little more greppable...  */
     45 #define	kmap(p)			linux_kmap(p)
     46 #define	kmap_atomic(p)		linux_kmap_atomic(p)
     47 #define	kunmap(p)		linux_kunmap(p)
     48 #define	kunmap_atomic(p)	linux_kunmap_atomic(p)
     49 
     50 /* XXX Kludge!  */
     51 #define	kmap_atomic_prot(page, prot)	kmap_atomic(page)
     52 
     53 int	linux_kmap_init(void);
     54 void	linux_kmap_fini(void);
     55 
     56 void *	kmap_atomic(struct page *);
     57 void	kunmap_atomic(void *);
     58 
     59 void *	kmap(struct page *);
     60 void	kunmap(struct page *);
     61 
     62 #endif  /* _LINUX_HIGHMEM_H_ */
     63