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

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * arch/arm/include/asm/pgtable-3level-types.h
   4 *
   5 * Copyright (C) 2011 ARM Ltd.
   6 * Author: Catalin Marinas <catalin.marinas@arm.com>
   7 */
   8#ifndef _ASM_PGTABLE_3LEVEL_TYPES_H
   9#define _ASM_PGTABLE_3LEVEL_TYPES_H
  10
  11#include <asm/types.h>
  12
  13typedef u64 pteval_t;
  14typedef u64 pmdval_t;
  15typedef u64 pgdval_t;
  16
  17#undef STRICT_MM_TYPECHECKS
  18
  19#ifdef STRICT_MM_TYPECHECKS
  20
  21/*
  22 * These are used to make use of C type-checking..
  23 */
  24typedef struct { pteval_t pte; } pte_t;
  25typedef struct { pmdval_t pmd; } pmd_t;
  26typedef struct { pgdval_t pgd; } pgd_t;
  27typedef struct { pteval_t pgprot; } pgprot_t;
  28
  29#define pte_val(x)      ((x).pte)
  30#define pmd_val(x)      ((x).pmd)
  31#define pgd_val(x)      ((x).pgd)
  32#define pgprot_val(x)   ((x).pgprot)
  33
  34#define __pte(x)        ((pte_t) { (x) } )
  35#define __pmd(x)        ((pmd_t) { (x) } )
  36#define __pgd(x)        ((pgd_t) { (x) } )
  37#define __pgprot(x)     ((pgprot_t) { (x) } )
  38
  39#else   /* !STRICT_MM_TYPECHECKS */
  40
  41typedef pteval_t pte_t;
  42typedef pmdval_t pmd_t;
  43typedef pgdval_t pgd_t;
  44typedef pteval_t pgprot_t;
  45
  46#define pte_val(x)      (x)
  47#define pmd_val(x)      (x)
  48#define pgd_val(x)      (x)
  49#define pgprot_val(x)   (x)
  50
  51#define __pte(x)        (x)
  52#define __pmd(x)        (x)
  53#define __pgd(x)        (x)
  54#define __pgprot(x)     (x)
  55
  56#endif  /* STRICT_MM_TYPECHECKS */
  57
  58#endif  /* _ASM_PGTABLE_3LEVEL_TYPES_H */
  59