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17f57211 CM |
1 | /* |
2 | * arch/arm/include/asm/pgtable-2level-types.h | |
3 | * | |
4 | * Copyright (C) 1995-2003 Russell King | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | #ifndef _ASM_PGTABLE_2LEVEL_TYPES_H | |
20 | #define _ASM_PGTABLE_2LEVEL_TYPES_H | |
21 | ||
442e70c0 CM |
22 | #include <asm/types.h> |
23 | ||
24 | typedef u32 pteval_t; | |
25 | typedef u32 pmdval_t; | |
17f57211 CM |
26 | |
27 | #undef STRICT_MM_TYPECHECKS | |
28 | ||
29 | #ifdef STRICT_MM_TYPECHECKS | |
30 | /* | |
31 | * These are used to make use of C type-checking.. | |
32 | */ | |
33 | typedef struct { pteval_t pte; } pte_t; | |
442e70c0 CM |
34 | typedef struct { pmdval_t pmd; } pmd_t; |
35 | typedef struct { pmdval_t pgd[2]; } pgd_t; | |
36 | typedef struct { pteval_t pgprot; } pgprot_t; | |
17f57211 CM |
37 | |
38 | #define pte_val(x) ((x).pte) | |
39 | #define pmd_val(x) ((x).pmd) | |
40 | #define pgd_val(x) ((x).pgd[0]) | |
41 | #define pgprot_val(x) ((x).pgprot) | |
42 | ||
43 | #define __pte(x) ((pte_t) { (x) } ) | |
44 | #define __pmd(x) ((pmd_t) { (x) } ) | |
45 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
46 | ||
47 | #else | |
48 | /* | |
49 | * .. while these make it easier on the compiler | |
50 | */ | |
51 | typedef pteval_t pte_t; | |
442e70c0 CM |
52 | typedef pmdval_t pmd_t; |
53 | typedef pmdval_t pgd_t[2]; | |
54 | typedef pteval_t pgprot_t; | |
17f57211 CM |
55 | |
56 | #define pte_val(x) (x) | |
57 | #define pmd_val(x) (x) | |
58 | #define pgd_val(x) ((x)[0]) | |
59 | #define pgprot_val(x) (x) | |
60 | ||
61 | #define __pte(x) (x) | |
62 | #define __pmd(x) (x) | |
63 | #define __pgprot(x) (x) | |
64 | ||
65 | #endif /* STRICT_MM_TYPECHECKS */ | |
66 | ||
67 | #endif /* _ASM_PGTABLE_2LEVEL_TYPES_H */ |