1/*
2 * Page table types definitions.
3 *
4 * Copyright (C) 2014 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, see <http://www.gnu.org/licenses/>.
18 */
19
20#ifndef __ASM_PGTABLE_TYPES_H
21#define __ASM_PGTABLE_TYPES_H
22
23#include <asm/types.h>
24
25typedef u64 pteval_t;
26typedef u64 pmdval_t;
27typedef u64 pudval_t;
28typedef u64 pgdval_t;
29
30#undef STRICT_MM_TYPECHECKS
31
32#ifdef STRICT_MM_TYPECHECKS
33
34/*
35 * These are used to make use of C type-checking..
36 */
37typedef struct { pteval_t pte; } pte_t;
38#define pte_val(x)	((x).pte)
39#define __pte(x)	((pte_t) { (x) } )
40
41#if CONFIG_PGTABLE_LEVELS > 2
42typedef struct { pmdval_t pmd; } pmd_t;
43#define pmd_val(x)	((x).pmd)
44#define __pmd(x)	((pmd_t) { (x) } )
45#endif
46
47#if CONFIG_PGTABLE_LEVELS > 3
48typedef struct { pudval_t pud; } pud_t;
49#define pud_val(x)	((x).pud)
50#define __pud(x)	((pud_t) { (x) } )
51#endif
52
53typedef struct { pgdval_t pgd; } pgd_t;
54#define pgd_val(x)	((x).pgd)
55#define __pgd(x)	((pgd_t) { (x) } )
56
57typedef struct { pteval_t pgprot; } pgprot_t;
58#define pgprot_val(x)	((x).pgprot)
59#define __pgprot(x)	((pgprot_t) { (x) } )
60
61#else	/* !STRICT_MM_TYPECHECKS */
62
63typedef pteval_t pte_t;
64#define pte_val(x)	(x)
65#define __pte(x)	(x)
66
67#if CONFIG_PGTABLE_LEVELS > 2
68typedef pmdval_t pmd_t;
69#define pmd_val(x)	(x)
70#define __pmd(x)	(x)
71#endif
72
73#if CONFIG_PGTABLE_LEVELS > 3
74typedef pudval_t pud_t;
75#define pud_val(x)	(x)
76#define __pud(x)	(x)
77#endif
78
79typedef pgdval_t pgd_t;
80#define pgd_val(x)	(x)
81#define __pgd(x)	(x)
82
83typedef pteval_t pgprot_t;
84#define pgprot_val(x)	(x)
85#define __pgprot(x)	(x)
86
87#endif /* STRICT_MM_TYPECHECKS */
88
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>
93#endif
94
95#endif	/* __ASM_PGTABLE_TYPES_H */
96