include/asm/pgtable-types.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Page table types definitions.
0004  *
0005  * Copyright (C) 2014 ARM Ltd.
0006  * Author: Catalin Marinas <catalin.marinas@arm.com>
0007  */
0008
0009 #ifndef __ASM_PGTABLE_TYPES_H
0010 #define __ASM_PGTABLE_TYPES_H
0011
0012 #include <asm/types.h>
0013
0014 typedef u64 pteval_t;
0015 typedef u64 pmdval_t;
0016 typedef u64 pudval_t;
0017 typedef u64 p4dval_t;
0018 typedef u64 pgdval_t;
0019
0020 /*
0021  * These are used to make use of C type-checking..
0022  */
0023 typedef struct { pteval_t pte; } pte_t;
0024 #define pte_val(x)  ((x).pte)
0025 #define __pte(x)    ((pte_t) { (x) } )
0026
0027 #if CONFIG_PGTABLE_LEVELS > 2
0028 typedef struct { pmdval_t pmd; } pmd_t;
0029 #define pmd_val(x)  ((x).pmd)
0030 #define __pmd(x)    ((pmd_t) { (x) } )
0031 #endif
0032
0033 #if CONFIG_PGTABLE_LEVELS > 3
0034 typedef struct { pudval_t pud; } pud_t;
0035 #define pud_val(x)  ((x).pud)
0036 #define __pud(x)    ((pud_t) { (x) } )
0037 #endif
0038
0039 typedef struct { pgdval_t pgd; } pgd_t;
0040 #define pgd_val(x)  ((x).pgd)
0041 #define __pgd(x)    ((pgd_t) { (x) } )
0042
0043 typedef struct { pteval_t pgprot; } pgprot_t;
0044 #define pgprot_val(x)   ((x).pgprot)
0045 #define __pgprot(x) ((pgprot_t) { (x) } )
0046
0047 #if CONFIG_PGTABLE_LEVELS == 2
0048 #include <asm-generic/pgtable-nopmd.h>
0049 #elif CONFIG_PGTABLE_LEVELS == 3
0050 #include <asm-generic/pgtable-nopud.h>
0051 #elif CONFIG_PGTABLE_LEVELS == 4
0052 #include <asm-generic/pgtable-nop4d.h>
0053 #endif
0054
0055 #endif  /* __ASM_PGTABLE_TYPES_H */