2 * Copyright (c) 2015-2018 François Tigeot <ftigeot@wolfpond.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #ifndef _ASM_PGTABLE_TYPES_H_
28 #define _ASM_PGTABLE_TYPES_H_
32 #define _PAGE_PRESENT X86_PG_V
33 #define _PAGE_RW X86_PG_RW
34 #define _PAGE_PWT X86_PG_NC_PWT
35 #define _PAGE_PCD X86_PG_NC_PCD
36 #define _PAGE_ACCESSED X86_PG_A
37 #define _PAGE_DIRTY X86_PG_M
38 #define _PAGE_PAT X86_PG_PTE_PAT
39 #define _PAGE_GLOBAL X86_PG_G
40 #define _PAGE_NX X86_PG_NX
42 #define _PAGE_CACHE_WC _PAGE_PWT
43 #define _PAGE_CACHE_UC_MINUS _PAGE_PCD
45 #define __PAGE_KERNEL_EXEC \
46 (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
47 #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX)
49 #define PAGE_KERNEL __PAGE_KERNEL
51 static inline pgprot_t
52 pgprot_writecombine(pgprot_t prot)
54 return (prot | _PAGE_CACHE_WC);
57 #endif /* _ASM_PGTABLE_TYPES_H_ */