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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2bf59916 AK |
2 | #ifndef _ASM_POWERPC_PGTABLE_TYPES_H |
3 | #define _ASM_POWERPC_PGTABLE_TYPES_H | |
4 | ||
2bf59916 | 5 | /* PTE level */ |
55c8fc3f CL |
6 | #if defined(CONFIG_PPC_8xx) && defined(CONFIG_PPC_16K_PAGES) |
7 | typedef struct { pte_basic_t pte, pte1, pte2, pte3; } pte_t; | |
8 | #else | |
2bf59916 | 9 | typedef struct { pte_basic_t pte; } pte_t; |
55c8fc3f | 10 | #endif |
2bf59916 AK |
11 | #define __pte(x) ((pte_t) { (x) }) |
12 | static inline pte_basic_t pte_val(pte_t x) | |
13 | { | |
14 | return x.pte; | |
15 | } | |
16 | ||
2bf59916 AK |
17 | /* PMD level */ |
18 | #ifdef CONFIG_PPC64 | |
19 | typedef struct { unsigned long pmd; } pmd_t; | |
20 | #define __pmd(x) ((pmd_t) { (x) }) | |
21 | static inline unsigned long pmd_val(pmd_t x) | |
22 | { | |
23 | return x.pmd; | |
24 | } | |
25 | ||
5874cabe | 26 | /* 64 bit always use 4 level table. */ |
2bf59916 AK |
27 | typedef struct { unsigned long pud; } pud_t; |
28 | #define __pud(x) ((pud_t) { (x) }) | |
29 | static inline unsigned long pud_val(pud_t x) | |
30 | { | |
31 | return x.pud; | |
32 | } | |
2bf59916 AK |
33 | #endif /* CONFIG_PPC64 */ |
34 | ||
35 | /* PGD level */ | |
36 | typedef struct { unsigned long pgd; } pgd_t; | |
37 | #define __pgd(x) ((pgd_t) { (x) }) | |
38 | static inline unsigned long pgd_val(pgd_t x) | |
39 | { | |
40 | return x.pgd; | |
41 | } | |
42 | ||
43 | /* Page protection bits */ | |
44 | typedef struct { unsigned long pgprot; } pgprot_t; | |
45 | #define pgprot_val(x) ((x).pgprot) | |
46 | #define __pgprot(x) ((pgprot_t) { (x) }) | |
47 | ||
ae9a71af AK |
48 | /* |
49 | * With hash config 64k pages additionally define a bigger "real PTE" type that | |
50 | * gathers the "second half" part of the PTE for pseudo 64k pages | |
51 | */ | |
5874cabe | 52 | #ifdef CONFIG_PPC_64K_PAGES |
ae9a71af AK |
53 | typedef struct { pte_t pte; unsigned long hidx; } real_pte_t; |
54 | #else | |
55 | typedef struct { pte_t pte; } real_pte_t; | |
2bf59916 | 56 | #endif |
3910a7f4 | 57 | |
4e003747 | 58 | #ifdef CONFIG_PPC_BOOK3S_64 |
3910a7f4 ME |
59 | #include <asm/cmpxchg.h> |
60 | ||
61 | static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new) | |
62 | { | |
63 | unsigned long *p = (unsigned long *)ptep; | |
64 | ||
1a92a80a | 65 | /* See comment in switch_mm_irqs_off() */ |
3910a7f4 ME |
66 | return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new)); |
67 | } | |
68 | #endif | |
69 | ||
20717e1f AK |
70 | typedef struct { unsigned long pd; } hugepd_t; |
71 | #define __hugepd(x) ((hugepd_t) { (x) }) | |
72 | static inline unsigned long hpd_val(hugepd_t x) | |
73 | { | |
74 | return x.pd; | |
75 | } | |
76 | ||
2bf59916 | 77 | #endif /* _ASM_POWERPC_PGTABLE_TYPES_H */ |