2 * Page table types definitions.
4 * Copyright (C) 2014 ARM Ltd.
5 * Author: Catalin Marinas <catalin.marinas@arm.com>
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.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #ifndef __ASM_PGTABLE_TYPES_H
21 #define __ASM_PGTABLE_TYPES_H
23 #include <asm/types.h>
30 #undef STRICT_MM_TYPECHECKS
32 #ifdef STRICT_MM_TYPECHECKS
35 * These are used to make use of C type-checking..
37 typedef struct { pteval_t pte; } pte_t;
38 #define pte_val(x) ((x).pte)
39 #define __pte(x) ((pte_t) { (x) } )
41 #if CONFIG_PGTABLE_LEVELS > 2
42 typedef struct { pmdval_t pmd; } pmd_t;
43 #define pmd_val(x) ((x).pmd)
44 #define __pmd(x) ((pmd_t) { (x) } )
47 #if CONFIG_PGTABLE_LEVELS > 3
48 typedef struct { pudval_t pud; } pud_t;
49 #define pud_val(x) ((x).pud)
50 #define __pud(x) ((pud_t) { (x) } )
53 typedef struct { pgdval_t pgd; } pgd_t;
54 #define pgd_val(x) ((x).pgd)
55 #define __pgd(x) ((pgd_t) { (x) } )
57 typedef struct { pteval_t pgprot; } pgprot_t;
58 #define pgprot_val(x) ((x).pgprot)
59 #define __pgprot(x) ((pgprot_t) { (x) } )
61 #else /* !STRICT_MM_TYPECHECKS */
63 typedef pteval_t pte_t;
64 #define pte_val(x) (x)
67 #if CONFIG_PGTABLE_LEVELS > 2
68 typedef pmdval_t pmd_t;
69 #define pmd_val(x) (x)
73 #if CONFIG_PGTABLE_LEVELS > 3
74 typedef pudval_t pud_t;
75 #define pud_val(x) (x)
79 typedef pgdval_t pgd_t;
80 #define pgd_val(x) (x)
83 typedef pteval_t pgprot_t;
84 #define pgprot_val(x) (x)
85 #define __pgprot(x) (x)
87 #endif /* STRICT_MM_TYPECHECKS */
89 #if CONFIG_PGTABLE_LEVELS == 2
90 #include <asm-generic/pgtable-nopmd.h>
91 #elif CONFIG_PGTABLE_LEVELS == 3
92 #include <asm-generic/pgtable-nopud.h>
95 #endif /* __ASM_PGTABLE_TYPES_H */