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1 | /* |
2 | * arch/arm/include/asm/pgtable-3level-types.h | |
3 | * | |
4 | * Copyright (C) 2011 ARM Ltd. | |
5 | * Author: Catalin Marinas <catalin.marinas@arm.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | #ifndef _ASM_PGTABLE_3LEVEL_TYPES_H | |
21 | #define _ASM_PGTABLE_3LEVEL_TYPES_H | |
22 | ||
23 | #include <asm/types.h> | |
24 | ||
25 | typedef u64 pteval_t; | |
26 | typedef u64 pmdval_t; | |
27 | typedef u64 pgdval_t; | |
28 | ||
29 | #undef STRICT_MM_TYPECHECKS | |
30 | ||
31 | #ifdef STRICT_MM_TYPECHECKS | |
32 | ||
33 | /* | |
34 | * These are used to make use of C type-checking.. | |
35 | */ | |
36 | typedef struct { pteval_t pte; } pte_t; | |
37 | typedef struct { pmdval_t pmd; } pmd_t; | |
38 | typedef struct { pgdval_t pgd; } pgd_t; | |
39 | typedef struct { pteval_t pgprot; } pgprot_t; | |
40 | ||
41 | #define pte_val(x) ((x).pte) | |
42 | #define pmd_val(x) ((x).pmd) | |
43 | #define pgd_val(x) ((x).pgd) | |
44 | #define pgprot_val(x) ((x).pgprot) | |
45 | ||
46 | #define __pte(x) ((pte_t) { (x) } ) | |
47 | #define __pmd(x) ((pmd_t) { (x) } ) | |
48 | #define __pgd(x) ((pgd_t) { (x) } ) | |
49 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
50 | ||
51 | #else /* !STRICT_MM_TYPECHECKS */ | |
52 | ||
53 | typedef pteval_t pte_t; | |
54 | typedef pmdval_t pmd_t; | |
55 | typedef pgdval_t pgd_t; | |
56 | typedef pteval_t pgprot_t; | |
57 | ||
58 | #define pte_val(x) (x) | |
59 | #define pmd_val(x) (x) | |
60 | #define pgd_val(x) (x) | |
61 | #define pgprot_val(x) (x) | |
62 | ||
63 | #define __pte(x) (x) | |
64 | #define __pmd(x) (x) | |
65 | #define __pgd(x) (x) | |
66 | #define __pgprot(x) (x) | |
67 | ||
68 | #endif /* STRICT_MM_TYPECHECKS */ | |
69 | ||
70 | #endif /* _ASM_PGTABLE_3LEVEL_TYPES_H */ |