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

INCLUDED FROM

   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 
  13 typedef u64 pteval_t;
  14 typedef u64 pmdval_t;
  15 typedef 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  */
  24 typedef struct { pteval_t pte; } pte_t;
  25 typedef struct { pmdval_t pmd; } pmd_t;
  26 typedef struct { pgdval_t pgd; } pgd_t;
  27 typedef 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 
  41 typedef pteval_t pte_t;
  42 typedef pmdval_t pmd_t;
  43 typedef pgdval_t pgd_t;
  44 typedef 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 */