LXR linux/arch/arm64/include/asm/pgtable-3level-types.h

   1/*
   2 * Copyright (C) 2012 ARM Ltd.
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License version 2 as
   6 * published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope that it will be useful,
   9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 * GNU General Public License for more details.
  12 *
  13 * You should have received a copy of the GNU General Public License
  14 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15 */
  16#ifndef __ASM_PGTABLE_3LEVEL_TYPES_H
  17#define __ASM_PGTABLE_3LEVEL_TYPES_H
  18
  19typedef u64 pteval_t;
  20typedef u64 pmdval_t;
  21typedef u64 pgdval_t;
  22
  23#undef STRICT_MM_TYPECHECKS
  24
  25#ifdef STRICT_MM_TYPECHECKS
  26
  27/*
  28 * These are used to make use of C type-checking..
  29 */
  30typedef struct { pteval_t pte; } pte_t;
  31typedef struct { pmdval_t pmd; } pmd_t;
  32typedef struct { pgdval_t pgd; } pgd_t;
  33typedef struct { pteval_t pgprot; } pgprot_t;
  34
  35#define pte_val(x)      ((x).pte)
  36#define pmd_val(x)      ((x).pmd)
  37#define pgd_val(x)      ((x).pgd)
  38#define pgprot_val(x)   ((x).pgprot)
  39
  40#define __pte(x)        ((pte_t) { (x) } )
  41#define __pmd(x)        ((pmd_t) { (x) } )
  42#define __pgd(x)        ((pgd_t) { (x) } )
  43#define __pgprot(x)     ((pgprot_t) { (x) } )
  44
  45#else   /* !STRICT_MM_TYPECHECKS */
  46
  47typedef pteval_t pte_t;
  48typedef pmdval_t pmd_t;
  49typedef pgdval_t pgd_t;
  50typedef pteval_t pgprot_t;
  51
  52#define pte_val(x)      (x)
  53#define pmd_val(x)      (x)
  54#define pgd_val(x)      (x)
  55#define pgprot_val(x)   (x)
  56
  57#define __pte(x)        (x)
  58#define __pmd(x)        (x)
  59#define __pgd(x)        (x)
  60#define __pgprot(x)     (x)
  61
  62#endif  /* STRICT_MM_TYPECHECKS */
  63
  64#include <asm-generic/pgtable-nopud.h>
  65
  66#endif  /* __ASM_PGTABLE_3LEVEL_TYPES_H */
  67