LXR linux/arch/arm64/include/asm/pgtable-2level-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_2LEVEL_TYPES_H
  17#define __ASM_PGTABLE_2LEVEL_TYPES_H
  18
  19typedef u64 pteval_t;
  20typedef u64 pgdval_t;
  21typedef pgdval_t pmdval_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 { pgdval_t pgd; } pgd_t;
  32typedef struct { pteval_t pgprot; } pgprot_t;
  33
  34#define pte_val(x)      ((x).pte)
  35#define pgd_val(x)      ((x).pgd)
  36#define pgprot_val(x)   ((x).pgprot)
  37
  38#define __pte(x)        ((pte_t) { (x) } )
  39#define __pgd(x)        ((pgd_t) { (x) } )
  40#define __pgprot(x)     ((pgprot_t) { (x) } )
  41
  42#else   /* !STRICT_MM_TYPECHECKS */
  43
  44typedef pteval_t pte_t;
  45typedef pgdval_t pgd_t;
  46typedef pteval_t pgprot_t;
  47
  48#define pte_val(x)      (x)
  49#define pgd_val(x)      (x)
  50#define pgprot_val(x)   (x)
  51
  52#define __pte(x)        (x)
  53#define __pgd(x)        (x)
  54#define __pgprot(x)     (x)
  55
  56#endif  /* STRICT_MM_TYPECHECKS */
  57
  58#include <asm-generic/pgtable-nopmd.h>
  59
  60#endif  /* __ASM_PGTABLE_2LEVEL_TYPES_H */
  61