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git.proxmox.com Git - mirror_ubuntu-focal-kernel.git/blob - arch/powerpc/include/asm/pgtable-be-types.h
1 #ifndef _ASM_POWERPC_PGTABLE_BE_TYPES_H
2 #define _ASM_POWERPC_PGTABLE_BE_TYPES_H
4 #include <asm/cmpxchg.h>
7 typedef struct { __be64 pte
; } pte_t
;
8 #define __pte(x) ((pte_t) { cpu_to_be64(x) })
9 #define __pte_raw(x) ((pte_t) { (x) })
10 static inline unsigned long pte_val(pte_t x
)
12 return be64_to_cpu(x
.pte
);
15 static inline __be64
pte_raw(pte_t x
)
22 typedef struct { __be64 pmd
; } pmd_t
;
23 #define __pmd(x) ((pmd_t) { cpu_to_be64(x) })
24 #define __pmd_raw(x) ((pmd_t) { (x) })
25 static inline unsigned long pmd_val(pmd_t x
)
27 return be64_to_cpu(x
.pmd
);
30 static inline __be64
pmd_raw(pmd_t x
)
36 * 64 bit hash always use 4 level table. Everybody else use 4 level
37 * only for 4K page size.
39 #if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES)
40 typedef struct { __be64 pud
; } pud_t
;
41 #define __pud(x) ((pud_t) { cpu_to_be64(x) })
42 #define __pud_raw(x) ((pud_t) { (x) })
43 static inline unsigned long pud_val(pud_t x
)
45 return be64_to_cpu(x
.pud
);
48 static inline __be64
pud_raw(pud_t x
)
53 #endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */
54 #endif /* CONFIG_PPC64 */
57 typedef struct { __be64 pgd
; } pgd_t
;
58 #define __pgd(x) ((pgd_t) { cpu_to_be64(x) })
59 #define __pgd_raw(x) ((pgd_t) { (x) })
60 static inline unsigned long pgd_val(pgd_t x
)
62 return be64_to_cpu(x
.pgd
);
65 static inline __be64
pgd_raw(pgd_t x
)
70 /* Page protection bits */
71 typedef struct { unsigned long pgprot
; } pgprot_t
;
72 #define pgprot_val(x) ((x).pgprot)
73 #define __pgprot(x) ((pgprot_t) { (x) })
76 * With hash config 64k pages additionally define a bigger "real PTE" type that
77 * gathers the "second half" part of the PTE for pseudo 64k pages
79 #if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC_STD_MMU_64)
80 typedef struct { pte_t pte
; unsigned long hidx
; } real_pte_t
;
82 typedef struct { pte_t pte
; } real_pte_t
;
85 static inline bool pte_xchg(pte_t
*ptep
, pte_t old
, pte_t
new)
87 unsigned long *p
= (unsigned long *)ptep
;
90 /* See comment in switch_mm_irqs_off() */
91 prev
= (__force __be64
)__cmpxchg_u64(p
, (__force
unsigned long)pte_raw(old
),
92 (__force
unsigned long)pte_raw(new));
94 return pte_raw(old
) == prev
;
97 static inline bool pmd_xchg(pmd_t
*pmdp
, pmd_t old
, pmd_t
new)
99 unsigned long *p
= (unsigned long *)pmdp
;
102 prev
= (__force __be64
)__cmpxchg_u64(p
, (__force
unsigned long)pmd_raw(old
),
103 (__force
unsigned long)pmd_raw(new));
105 return pmd_raw(old
) == prev
;
108 typedef struct { __be64 pdbe
; } hugepd_t
;
109 #define __hugepd(x) ((hugepd_t) { cpu_to_be64(x) })
111 static inline unsigned long hpd_val(hugepd_t x
)
113 return be64_to_cpu(x
.pdbe
);
116 #endif /* _ASM_POWERPC_PGTABLE_BE_TYPES_H */