1*49a189d2Skettenis /* $OpenBSD: highmem.h,v 1.4 2021/07/28 13:28:05 kettenis Exp $ */
27f4dd379Sjsg /*
37f4dd379Sjsg * Copyright (c) 2013, 2014, 2015 Mark Kettenis
47f4dd379Sjsg *
57f4dd379Sjsg * Permission to use, copy, modify, and distribute this software for any
67f4dd379Sjsg * purpose with or without fee is hereby granted, provided that the above
77f4dd379Sjsg * copyright notice and this permission notice appear in all copies.
87f4dd379Sjsg *
97f4dd379Sjsg * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
107f4dd379Sjsg * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
117f4dd379Sjsg * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
127f4dd379Sjsg * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
137f4dd379Sjsg * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
147f4dd379Sjsg * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
157f4dd379Sjsg * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
167f4dd379Sjsg */
177f4dd379Sjsg
187f4dd379Sjsg #ifndef _LINUX_HIGHMEM_H
197f4dd379Sjsg #define _LINUX_HIGHMEM_H
207f4dd379Sjsg
21c349dbc7Sjsg #include <sys/param.h>
227f4dd379Sjsg #include <uvm/uvm_extern.h>
237f4dd379Sjsg #include <linux/uaccess.h>
24*49a189d2Skettenis #include <asm/pgtable.h>
257f4dd379Sjsg
267f4dd379Sjsg void *kmap(struct vm_page *);
276942ea66Sjsg void kunmap_va(void *addr);
287f4dd379Sjsg
297f4dd379Sjsg #define kmap_to_page(ptr) (ptr)
307f4dd379Sjsg
31*49a189d2Skettenis void *kmap_atomic_prot(struct vm_page *, pgprot_t);
32*49a189d2Skettenis void kunmap_atomic(void *);
337f4dd379Sjsg
347f4dd379Sjsg static inline void *
kmap_atomic(struct vm_page * pg)357f4dd379Sjsg kmap_atomic(struct vm_page *pg)
367f4dd379Sjsg {
37*49a189d2Skettenis return kmap_atomic_prot(pg, PAGE_KERNEL);
387f4dd379Sjsg }
397f4dd379Sjsg
407f4dd379Sjsg #endif
41