diff options
Diffstat (limited to 'kernel/arch/arm64/include/asm/pgtable-types.h')
-rw-r--r-- | kernel/arch/arm64/include/asm/pgtable-types.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/kernel/arch/arm64/include/asm/pgtable-types.h b/kernel/arch/arm64/include/asm/pgtable-types.h new file mode 100644 index 000000000..2b1bd7e52 --- /dev/null +++ b/kernel/arch/arm64/include/asm/pgtable-types.h @@ -0,0 +1,95 @@ +/* + * Page table types definitions. + * + * Copyright (C) 2014 ARM Ltd. + * Author: Catalin Marinas <catalin.marinas@arm.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __ASM_PGTABLE_TYPES_H +#define __ASM_PGTABLE_TYPES_H + +#include <asm/types.h> + +typedef u64 pteval_t; +typedef u64 pmdval_t; +typedef u64 pudval_t; +typedef u64 pgdval_t; + +#undef STRICT_MM_TYPECHECKS + +#ifdef STRICT_MM_TYPECHECKS + +/* + * These are used to make use of C type-checking.. + */ +typedef struct { pteval_t pte; } pte_t; +#define pte_val(x) ((x).pte) +#define __pte(x) ((pte_t) { (x) } ) + +#if CONFIG_PGTABLE_LEVELS > 2 +typedef struct { pmdval_t pmd; } pmd_t; +#define pmd_val(x) ((x).pmd) +#define __pmd(x) ((pmd_t) { (x) } ) +#endif + +#if CONFIG_PGTABLE_LEVELS > 3 +typedef struct { pudval_t pud; } pud_t; +#define pud_val(x) ((x).pud) +#define __pud(x) ((pud_t) { (x) } ) +#endif + +typedef struct { pgdval_t pgd; } pgd_t; +#define pgd_val(x) ((x).pgd) +#define __pgd(x) ((pgd_t) { (x) } ) + +typedef struct { pteval_t pgprot; } pgprot_t; +#define pgprot_val(x) ((x).pgprot) +#define __pgprot(x) ((pgprot_t) { (x) } ) + +#else /* !STRICT_MM_TYPECHECKS */ + +typedef pteval_t pte_t; +#define pte_val(x) (x) +#define __pte(x) (x) + +#if CONFIG_PGTABLE_LEVELS > 2 +typedef pmdval_t pmd_t; +#define pmd_val(x) (x) +#define __pmd(x) (x) +#endif + +#if CONFIG_PGTABLE_LEVELS > 3 +typedef pudval_t pud_t; +#define pud_val(x) (x) +#define __pud(x) (x) +#endif + +typedef pgdval_t pgd_t; +#define pgd_val(x) (x) +#define __pgd(x) (x) + +typedef pteval_t pgprot_t; +#define pgprot_val(x) (x) +#define __pgprot(x) (x) + +#endif /* STRICT_MM_TYPECHECKS */ + +#if CONFIG_PGTABLE_LEVELS == 2 +#include <asm-generic/pgtable-nopmd.h> +#elif CONFIG_PGTABLE_LEVELS == 3 +#include <asm-generic/pgtable-nopud.h> +#endif + +#endif /* __ASM_PGTABLE_TYPES_H */ |