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 22#include <asm/types.h> 23 24typedef u32 pteval_t; 25typedef u32 pmdval_t; 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 */ 33typedef struct { pteval_t pte; } pte_t; 34typedef struct { pmdval_t pmd; } pmd_t; 35typedef struct { pmdval_t pgd[2]; } pgd_t; 36typedef struct { pteval_t pgprot; } pgprot_t; 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 */ 51typedef pteval_t pte_t; 52typedef pmdval_t pmd_t; 53typedef pmdval_t pgd_t[2]; 54typedef pteval_t pgprot_t; 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 */ 68