1 /* $OpenBSD: highmem.h,v 1.4 2021/07/28 13:28:05 kettenis Exp $ */ 2 /* 3 * Copyright (c) 2013, 2014, 2015 Mark Kettenis 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #ifndef _LINUX_HIGHMEM_H 19 #define _LINUX_HIGHMEM_H 20 21 #include <sys/param.h> 22 #include <uvm/uvm_extern.h> 23 #include <linux/uaccess.h> 24 #include <asm/pgtable.h> 25 26 void *kmap(struct vm_page *); 27 void kunmap_va(void *addr); 28 29 #define kmap_to_page(ptr) (ptr) 30 31 void *kmap_atomic_prot(struct vm_page *, pgprot_t); 32 void kunmap_atomic(void *); 33 34 static inline void * 35 kmap_atomic(struct vm_page *pg) 36 { 37 return kmap_atomic_prot(pg, PAGE_KERNEL); 38 } 39 40 #endif 41