pgtable-3level-types.h

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/*
 * Copyright (C) 2012 ARM Ltd.
 *
 * 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_3LEVEL_TYPES_H
#define __ASM_PGTABLE_3LEVEL_TYPES_H

typedef u64 pteval_t;
typedef u64 pmdval_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;
typedef struct { pmdval_t pmd; } pmd_t;
typedef struct { pgdval_t pgd; } pgd_t;
typedef struct { pteval_t pgprot; } pgprot_t;

#define pte_val(x)      ((x).pte)
#define pmd_val(x)      ((x).pmd)
#define pgd_val(x)  ((x).pgd)
#define pgprot_val(x)   ((x).pgprot)

#define __pte(x)        ((pte_t) { (x) } )
#define __pmd(x)        ((pmd_t) { (x) } )
#define __pgd(x)    ((pgd_t) { (x) } )
#define __pgprot(x)     ((pgprot_t) { (x) } )

#else   /* !STRICT_MM_TYPECHECKS */

typedef pteval_t pte_t;
typedef pmdval_t pmd_t;
typedef pgdval_t pgd_t;
typedef pteval_t pgprot_t;

#define pte_val(x)  (x)
#define pmd_val(x)  (x)
#define pgd_val(x)  (x)
#define pgprot_val(x)   (x)

#define __pte(x)    (x)
#define __pmd(x)    (x)
#define __pgd(x)    (x)
#define __pgprot(x) (x)

#endif  /* STRICT_MM_TYPECHECKS */

#include <asm-generic/pgtable-nopud.h>

#endif  /* __ASM_PGTABLE_3LEVEL_TYPES_H */