linux/arch/arm64/include/asm/pgtable-types.h
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   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Page table types definitions.
   4 *
   5 * Copyright (C) 2014 ARM Ltd.
   6 * Author: Catalin Marinas <catalin.marinas@arm.com>
   7 */
   8
   9#ifndef __ASM_PGTABLE_TYPES_H
  10#define __ASM_PGTABLE_TYPES_H
  11
  12#include <asm/types.h>
  13
  14typedef u64 pteval_t;
  15typedef u64 pmdval_t;
  16typedef u64 pudval_t;
  17typedef u64 p4dval_t;
  18typedef u64 pgdval_t;
  19
  20/*
  21 * These are used to make use of C type-checking..
  22 */
  23typedef struct { pteval_t pte; } pte_t;
  24#define pte_val(x)      ((x).pte)
  25#define __pte(x)        ((pte_t) { (x) } )
  26
  27#if CONFIG_PGTABLE_LEVELS > 2
  28typedef struct { pmdval_t pmd; } pmd_t;
  29#define pmd_val(x)      ((x).pmd)
  30#define __pmd(x)        ((pmd_t) { (x) } )
  31#endif
  32
  33#if CONFIG_PGTABLE_LEVELS > 3
  34typedef struct { pudval_t pud; } pud_t;
  35#define pud_val(x)      ((x).pud)
  36#define __pud(x)        ((pud_t) { (x) } )
  37#endif
  38
  39typedef struct { pgdval_t pgd; } pgd_t;
  40#define pgd_val(x)      ((x).pgd)
  41#define __pgd(x)        ((pgd_t) { (x) } )
  42
  43typedef struct { pteval_t pgprot; } pgprot_t;
  44#define pgprot_val(x)   ((x).pgprot)
  45#define __pgprot(x)     ((pgprot_t) { (x) } )
  46
  47#if CONFIG_PGTABLE_LEVELS == 2
  48#include <asm-generic/pgtable-nopmd.h>
  49#elif CONFIG_PGTABLE_LEVELS == 3
  50#include <asm-generic/pgtable-nopud.h>
  51#elif CONFIG_PGTABLE_LEVELS == 4
  52#include <asm-generic/pgtable-nop4d.h>
  53#endif
  54
  55#endif  /* __ASM_PGTABLE_TYPES_H */
  56