1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * arch/arm/include/asm/pgtable-2level-types.h
4  *
5  * Copyright (C) 1995-2003 Russell King
6  */
7 #ifndef _ASM_PGTABLE_2LEVEL_TYPES_H
8 #define _ASM_PGTABLE_2LEVEL_TYPES_H
9 
10 #include <asm/types.h>
11 
12 typedef u32 pteval_t;
13 typedef u32 pmdval_t;
14 
15 #undef STRICT_MM_TYPECHECKS
16 
17 #ifdef STRICT_MM_TYPECHECKS
18 /*
19  * These are used to make use of C type-checking..
20  */
21 typedef struct { pteval_t pte; } pte_t;
22 typedef struct { pmdval_t pmd; } pmd_t;
23 typedef struct { pmdval_t pgd[2]; } pgd_t;
24 typedef struct { pteval_t pgprot; } pgprot_t;
25 
26 #define pte_val(x)      ((x).pte)
27 #define pmd_val(x)      ((x).pmd)
28 #define pgd_val(x)	((x).pgd[0])
29 #define pgprot_val(x)   ((x).pgprot)
30 
31 #define __pte(x)        ((pte_t) { (x) } )
32 #define __pmd(x)        ((pmd_t) { (x) } )
33 #define __pgprot(x)     ((pgprot_t) { (x) } )
34 
35 #else
36 /*
37  * .. while these make it easier on the compiler
38  */
39 typedef pteval_t pte_t;
40 typedef pmdval_t pmd_t;
41 typedef pmdval_t pgd_t[2];
42 typedef pteval_t pgprot_t;
43 
44 #define pte_val(x)      (x)
45 #define pmd_val(x)      (x)
46 #define pgd_val(x)	((x)[0])
47 #define pgprot_val(x)   (x)
48 
49 #define __pte(x)        (x)
50 #define __pmd(x)        (x)
51 #define __pgprot(x)     (x)
52 
53 #endif /* STRICT_MM_TYPECHECKS */
54 
55 #endif	/* _ASM_PGTABLE_2LEVEL_TYPES_H */
56