root/arch/arm64/include/asm/pgtable-types.h

INCLUDED FROM

   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 
  14 typedef u64 pteval_t;
  15 typedef u64 pmdval_t;
  16 typedef u64 pudval_t;
  17 typedef u64 pgdval_t;
  18 
  19 /*
  20  * These are used to make use of C type-checking..
  21  */
  22 typedef struct { pteval_t pte; } pte_t;
  23 #define pte_val(x)      ((x).pte)
  24 #define __pte(x)        ((pte_t) { (x) } )
  25 
  26 #if CONFIG_PGTABLE_LEVELS > 2
  27 typedef struct { pmdval_t pmd; } pmd_t;
  28 #define pmd_val(x)      ((x).pmd)
  29 #define __pmd(x)        ((pmd_t) { (x) } )
  30 #endif
  31 
  32 #if CONFIG_PGTABLE_LEVELS > 3
  33 typedef struct { pudval_t pud; } pud_t;
  34 #define pud_val(x)      ((x).pud)
  35 #define __pud(x)        ((pud_t) { (x) } )
  36 #endif
  37 
  38 typedef struct { pgdval_t pgd; } pgd_t;
  39 #define pgd_val(x)      ((x).pgd)
  40 #define __pgd(x)        ((pgd_t) { (x) } )
  41 
  42 typedef struct { pteval_t pgprot; } pgprot_t;
  43 #define pgprot_val(x)   ((x).pgprot)
  44 #define __pgprot(x)     ((pgprot_t) { (x) } )
  45 
  46 #if CONFIG_PGTABLE_LEVELS == 2
  47 #define __ARCH_USE_5LEVEL_HACK
  48 #include <asm-generic/pgtable-nopmd.h>
  49 #elif CONFIG_PGTABLE_LEVELS == 3
  50 #define __ARCH_USE_5LEVEL_HACK
  51 #include <asm-generic/pgtable-nopud.h>
  52 #elif CONFIG_PGTABLE_LEVELS == 4
  53 #include <asm-generic/5level-fixup.h>
  54 #endif
  55 
  56 #endif  /* __ASM_PGTABLE_TYPES_H */