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

   1 /*
   2  * Page table types definitions.
   3  *
   4  * Copyright (C) 2014 ARM Ltd.
   5  * Author: Catalin Marinas <catalin.marinas@arm.com>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef __ASM_PGTABLE_TYPES_H
  21 #define __ASM_PGTABLE_TYPES_H
  22
  23 #include <asm/types.h>
  24
  25 typedef u64 pteval_t;
  26 typedef u64 pmdval_t;
  27 typedef u64 pudval_t;
  28 typedef u64 pgdval_t;
  29
  30 /*
  31  * These are used to make use of C type-checking..
  32  */
  33 typedef struct { pteval_t pte; } pte_t;
  34 #define pte_val(x)      ((x).pte)
  35 #define __pte(x)        ((pte_t) { (x) } )
  36
  37 #if CONFIG_PGTABLE_LEVELS > 2
  38 typedef struct { pmdval_t pmd; } pmd_t;
  39 #define pmd_val(x)      ((x).pmd)
  40 #define __pmd(x)        ((pmd_t) { (x) } )
  41 #endif
  42
  43 #if CONFIG_PGTABLE_LEVELS > 3
  44 typedef struct { pudval_t pud; } pud_t;
  45 #define pud_val(x)      ((x).pud)
  46 #define __pud(x)        ((pud_t) { (x) } )
  47 #endif
  48
  49 typedef struct { pgdval_t pgd; } pgd_t;
  50 #define pgd_val(x)      ((x).pgd)
  51 #define __pgd(x)        ((pgd_t) { (x) } )
  52
  53 typedef struct { pteval_t pgprot; } pgprot_t;
  54 #define pgprot_val(x)   ((x).pgprot)
  55 #define __pgprot(x)     ((pgprot_t) { (x) } )
  56
  57 #if CONFIG_PGTABLE_LEVELS == 2
  58 #define __ARCH_USE_5LEVEL_HACK
  59 #include <asm-generic/pgtable-nopmd.h>
  60 #elif CONFIG_PGTABLE_LEVELS == 3
  61 #define __ARCH_USE_5LEVEL_HACK
  62 #include <asm-generic/pgtable-nopud.h>
  63 #elif CONFIG_PGTABLE_LEVELS == 4
  64 #include <asm-generic/5level-fixup.h>
  65 #endif
  66
  67 #endif  /* __ASM_PGTABLE_TYPES_H */